WO2018184160A1

WO2018184160A1 - Online equalization method for battery pack and system thereof

Info

Publication number: WO2018184160A1
Application number: PCT/CN2017/079528
Authority: WO
Inventors: 应红峰; 张益�
Original assignee: Shenzhen ZNV Technology Co Ltd
Current assignee: Shenzhen ZNV Technology Co Ltd
Priority date: 2017-04-06
Filing date: 2017-04-06
Publication date: 2018-10-11
Anticipated expiration: 2019-10-06
Also published as: CN108702005B; CN108702005A

Abstract

Disclosed in the present invention are an online equalization method for a battery pack and a system thereof. The method comprises: obtaining a cell voltage of a battery cell in a battery pack, and screening out an equalization cell requiring charge equalization or discharge equalization; acquiring a deviation of the cell voltage of the equalization cell from a floating charge voltage; determining, according to the deviation, equalization parameters, wherein the equalization parameters comprise at least one of: a return difference value at the end of the equalization, a charge current and charge time, a discharge current and discharge time, and a waiting time; and performing, according to the equalization parameters, equalization processing on the equalization cell. The present invention can perform online maintenance on a battery cell without manual intervention, and make an intelligent determination on startup and cessation of an equalization operation without affecting a normal operation of an original system.

Description

说明书发明名称：一种蓄电池组在线均衡方法及其系统技术领域 Description: A battery pack online equalization method and system thereof

[0001] 本发明涉及改善蓄电池组维护的技术领域，尤其涉及一种蓄电池组在线均衡方法及其系统。背景技术 [0001] The present invention relates to the technical field of improving battery pack maintenance, and more particularly to a battery pack online equalization method and system thereof. Background technique

[0002] 蓄电池组在通信基站和 IDC (Internet Data Center互联网数据中心）机房中广泛应用，主要设置为市电停电后为各种设备供电。蓄电池组需要对蓄电池组温度、电压、内阻等参数进行监测并据此进行日常管理维护以延长其使用寿命。 [0002] Battery packs are widely used in communication base stations and IDC (Internet Data Center) equipment rooms. They are mainly used to supply power to various devices after the mains power failure. The battery pack needs to monitor the battery pack temperature, voltage, internal resistance and other parameters and carry out daily management and maintenance to extend its service life.

[0003] 一般地，蓄电池组单体浮充电压必须保持在一定范围之内，如果超过该范围就需要对蓄电池组单体做均衡维护，否则会降低蓄电池组使用寿命。现有对蓄电池组单体电压均衡维护的方案为：如果蓄电池组单体电压高于浮充电压一定范围，则蓄电池组单体通过电阻负载放电均衡，电能以热能的形式通过电阻负载耗散；如果蓄电池组单体电压低于浮充电压一定范围，则外部电源对蓄电池组充电均衡，需要外部电能对蓄电池组单体充电。 [0003] Generally, the battery pack float voltage must be kept within a certain range. If the range is exceeded, the battery pack unit needs to be balancedly maintained, otherwise the battery pack life will be reduced. The existing solution for balancing the voltage of the battery pack unit is: if the battery pack cell voltage is higher than the float voltage range, the battery pack unit is discharged through the resistive load, and the electric energy is dissipated through the resistive load in the form of heat energy; If the battery cell voltage is lower than the float voltage range, the external power source equalizes the battery pack and requires external power to charge the battery pack unit.

[0004] 目前，在 IDC数据中心的机房里或电信运营商的基站里，数以万甚至十几万计的阀控式铅酸蓄电池组，涉及蓄电池组的维护管理，目前基本都是靠人力维护或跟换，并且都是依赖于系统吋间到点提醒以及故障提醒更换，这样基本涉及被动型操作，并且可能会带来一定的经济损失。 [0004] At present, in the computer room of the IDC data center or the base station of the telecom operator, tens of thousands or even hundreds of thousands of VRLA batteries are involved in the maintenance and management of the battery pack. Maintenance or replacement, and are dependent on the system's turn-to-point reminder and fault reminder replacement, which basically involves passive operation, and may bring certain economic losses.

技术问题 technical problem

[0005] 本发明的主要目的在于提出一种蓄电池组在线均衡方法及其系统，旨在实现自动完成蓄电池组中需要进行均衡处理的单体的在线均衡维护，无需人工干预目的。 [0005] The main object of the present invention is to provide a battery pack online equalization method and system thereof, which are intended to realize online balancing maintenance of a unit in a battery pack that needs to be balanced, without manual intervention.

问题的解决方案 Problem solution

技术解决方案 Technical solution

[0006] 为实现上述目的，本发明提供一种蓄电池组在线均衡方法，其中，所述方法包括： [0007] 采集蓄电池组中电池单体的单体电压，并筛选出需要进行充电均衡或放电均衡的均衡单体； [0006] In order to achieve the above object, the present invention provides a battery pack online equalization method, where the method includes: [0007] collecting the cell voltage of the battery cells in the battery pack, and screening out the equalization monomers that need to be charged equalization or discharge equalization;

[0008] 获取所述均衡单体的单体电压与浮充电压的偏差值； Obtaining a deviation value between a cell voltage of the equalization cell and a float voltage;

[0009] 根据所述偏差值确定均衡参数；所述均衡参数包括均衡结束吋的回差值、充电电流及吋长、放电电流及吋长、等待吋间中的至少一项； [0009] determining an equalization parameter according to the deviation value; the equalization parameter includes at least one of a back value of the end of the equalization, a charging current and a length, a discharge current, a length, and a waiting time;

[0010] 根据所述均衡参数对所述均衡单体进行均衡处理。 And [0010] performing equalization processing on the equalization unit according to the equalization parameter.

[0011] 可选地，所述采集蓄电池组中电池单体的单体电压，并筛选出需要进行充电均衡或放电均衡的均衡单体包括： [0011] Optionally, collecting the cell voltage of the battery cells in the battery pack, and screening the equalization monomers that need to perform charge equalization or discharge equalization include:

[0012] 判断是否到达采集信息的预设吋间点； [0012] determining whether the preset time point of the collected information is reached;

[0013] 若是，则采集所述电池单体的单体电压； [0013] If yes, collecting the cell voltage of the battery cell;

[0014] 计算单体电压与浮充电压的偏差值； [0014] calculating a deviation value between the cell voltage and the float voltage;

[0015] 若所述偏差值大于零，则记录所述偏差值大于第一预设值的第一次数，和 /或所述偏差值大于第二预设值的第二次数；若所述偏差值小于零，则记录所述偏差值小于第三预设值的第三次数，和 /或所述偏差值小于第四预设值的第四次数 [0015] if the deviation value is greater than zero, recording the first time that the deviation value is greater than the first preset value, and/or the second time number that the deviation value is greater than the second preset value; If the deviation value is less than zero, the third time that the deviation value is less than the third preset value is recorded, and/or the deviation value is less than the fourth number of the fourth preset value

[0016] 若所述第一次数达到第一阈值，或所述第二次数达到第二阈值，或所述第三次数达到第三阈值，或所述第四次数达到第四阈值；则将所述电池单体标记为均衡单元； [0016] if the first number of times reaches a first threshold, or the second number reaches a second threshold, or the third number reaches a third threshold, or the fourth number reaches a fourth threshold; The battery cell is labeled as an equalization unit;

[0017] 记录所述均衡单体对应的单体电压与浮充电压的偏差值。 And [0017] recording a deviation value between the cell voltage corresponding to the equalization cell and the float voltage.

[0018] 可选地，所述均衡处理包括充放电阶段、静置等待阶段，所述根据所述均衡参数对所述均衡单体进行均衡处理包括： [0018] Optionally, the equalizing process includes a charging and discharging phase and a static waiting phase, and the equalizing processing the equalizing cells according to the equalizing parameter includes:

[0019] 判断是否有所述均衡单体处于所述均衡处理的静置等待阶段； [0019] determining whether the equalization unit is in a rest wait period of the equalization process;

[0020] 若是，则使待进行均衡处理的所述均衡单体启动所述均衡处理的充放电阶段。 [0020] If yes, the equalization unit to be equalized is activated to initiate a charge and discharge phase of the equalization process.

[0021] 可选地，所述根据所述均衡参数对所述均衡单体进行均衡处理之后，所述方法还包括： [0021] Optionally, after performing equalization processing on the equalization unit according to the equalization parameter, the method further includes:

[0022] 获取已完成均衡处理的所述均衡单体的当前单体电压； [0022] obtaining a current cell voltage of the equalization cell that has completed the equalization process;

[0023] 计算所述当前单体电压与所述浮充电压的均衡偏差值； [0023] calculating a balance deviation value between the current cell voltage and the float voltage;

[0024] 判断所述均衡偏差值是否满足预设条件，所述预设条件包括需要进行放电均衡的均衡单体的均衡偏差值小于回差值；需要进行充电均衡的均衡单体的均衡偏差值大于回差值； [0024] determining whether the balance deviation value satisfies a preset condition, where the preset condition includes performing discharge equalization The equilibrium deviation value of the equalization unit is smaller than the back difference value; the equilibrium deviation value of the equalization unit that needs to perform charge equalization is greater than the back difference value;

[0025] 若否，则根据所述均衡偏差值重新获取均衡参数，并再次执行所述根据所述均衡参数对所述均衡单体进行均衡处理的步骤。 [0025] If not, re-acquiring the equalization parameter according to the equalization deviation value, and performing the step of performing equalization processing on the equalization unit according to the equalization parameter.

[0026] 可选地，所述根据所述偏差值确定均衡参数包括： [0026] Optionally, determining the equalization parameter according to the deviation value includes:

[0027] 当所述偏差值大于预设最大正值吋，所述均衡参数包括第一放电电流、第一放电吋间、第一放电等待吋间； [0027] when the deviation value is greater than a preset maximum positive value 吋, the equalization parameter includes a first discharge current, a first discharge time, and a first discharge waiting time;

[0028] 当所述偏差值大于预设最小正值且小于所述预设最大正值吋，所述均衡参数包括第二放电电流、第二放电吋间、第二放电等待吋间，且所述第二放电电流为所述第一放电电流的 1/5，所述第二放电吋间与所述第一放电吋间相等，所述第二放电等待吋间为所述第一放电等待吋间的 2倍； [0028] when the deviation value is greater than a preset minimum positive value and less than the preset maximum positive value 吋, the equalization parameter includes a second discharge current, a second discharge time, and a second discharge waiting time, and The second discharge current is 1/5 of the first discharge current, the second discharge time is equal to the first discharge time, and the second discharge waiting time is the first discharge waiting time. 2 times between;

[0029] 当所述偏差值大于零且小于所述预设最小正值吋，所述均衡参数包括第三放电电流、第三放电吋间、第三放电等待吋间，且所述第三放电电流为所述第一放电电流的 1/20，所述第三放电吋间为所述第一放电吋间的 1/2，所述第三放电等待吋间为所述第一放电等待吋间的 2倍； [0029] when the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge time, a third discharge waiting time, and the third discharge The current is 1/20 of the first discharge current, the third discharge time is 1/2 between the first discharge turns, and the third discharge wait time is the first discharge waiting time 2 times;

[0030] 当所述偏差值小于预设最小负值吋，所述均衡参数包括第一充电电流、第一充电吋间、第一充电等待吋间； [0030] when the deviation value is less than a preset minimum negative value, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

[0031] 当所述偏差值大于预设最小负值且小于所述预设最大负值吋，所述均衡参数包括第二充电电流、第二充电吋间、第二充电等待吋间，且所述第二充电电流为所述第一充电电流的 1/5，所述第二充电吋间与所述第一充电吋间相等，所述第二充电等待吋间为所述第一充电等待吋间的 2倍； [0031] when the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, and a second charging waiting time, and The second charging current is 1/5 of the first charging current, the second charging time is equal to the first charging time, and the second charging waiting time is the first charging waiting time. 2 times between;

[0032] 当所述偏差值小于零且小于所述预设最大负值吋，所述均衡参数包括第三充电电流、第三充电吋间、第三充电等待吋间，且所述第三充电电流为所述第一充电电流的 1/20，所述第三充电吋间为所述第一充电吋间的 1/2，所述第三充电等待吋间为所述第一充电等待吋间的 2倍。 [0032] when the deviation value is less than zero and less than the preset maximum negative value 吋, the equalization parameter includes a third charging current, a third charging interval, a third charging waiting time, and the third charging The current is 1/20 of the first charging current, the third charging time is 1/2 between the first charging times, and the third charging waiting time is the first charging waiting time 2 times.

[0033] 此外，为实现上述目的，本发明还提供一种蓄电池组在线均衡系统，其中，所述系统包括： [0033] In addition, in order to achieve the above object, the present invention further provides a battery pack online equalization system, wherein the system includes:

[0034] 采集模块，设置为采集蓄电池组中电池单体的单体电压； [0035] 控制模块，设置为筛选出需要进行充电均衡或放电均衡的均衡单体；并获取所述均衡单体的单体电压与浮充电压的偏差值； [0034] an acquisition module, configured to collect a cell voltage of a battery cell in the battery group; [0035] The control module is configured to filter out an equalization cell that needs to perform charge equalization or discharge equalization; and obtain a deviation value between the cell voltage of the equalization cell and the float voltage;

[0036] 均衡参数模块，设置为根据所述偏差值确定均衡参数；所述均衡参数包括均衡结束吋的回差值、充电电流及吋长、放电电流及吋长、等待吋间中的至少一项 [0036] The equalization parameter module is configured to determine an equalization parameter according to the deviation value; the equalization parameter includes at least one of a back-off value of the end of the equalization, a charging current and a length, a discharge current, a length, and a waiting period. Item

[0037] 充放电模块，设置为根据所述均衡参数对所述均衡单体进行均衡处理。 [0037] The charge and discharge module is configured to perform equalization processing on the equalization unit according to the equalization parameter.

[0038] 可选地，所述控制模块还包括筛选单元，设置为： [0038] Optionally, the control module further includes a screening unit, configured to:

[0039] 判断是否到达采集信息的预设吋间点； [0039] determining whether the preset time point of the collected information is reached;

[0040] 若是，则从所述采集单元获取所述电池单体的单体电压； [0040] if yes, obtaining a cell voltage of the battery cell from the collecting unit;

[0041] 计算单体电压与浮充电压的偏差值； [0041] calculating a deviation value between the cell voltage and the float voltage;

[0042] 若所述偏差值大于零，则记录所述偏差值大于第一预设值的第一次数，和 /或所述偏差值大于第二预设值的第二次数；若所述偏差值小于零，则记录所述偏差值小于第三预设值的第三次数，和 /或所述偏差值小于第四预设值的第四次数 [0042] if the deviation value is greater than zero, recording the first time that the deviation value is greater than the first preset value, and/or the second time number that the deviation value is greater than the second preset value; If the deviation value is less than zero, the third time that the deviation value is less than the third preset value is recorded, and/or the deviation value is less than the fourth number of the fourth preset value

[0043] 若所述第一次数达到第一阈值，或所述第二次数达到第二阈值，或所述第三次数达到第三阈值，或所述第四次数达到第四阈值；则将所述电池单体标记为均衡单元； [0043] if the first number of times reaches a first threshold, or the second number of times reaches a second threshold, or the third number of times reaches a third threshold, or the fourth number of times reaches a fourth threshold; The battery cell is labeled as an equalization unit;

[0044] 记录所述均衡单体对应的单体电压与浮充电压的偏差值。 [0044] Recording a deviation value between the cell voltage corresponding to the equalization cell and the float voltage.

[0045] 可选地，所述均衡处理包括充放电阶段、静置等待阶段，所述控制模块还包括均衡通知单元，设置为： [0045] Optionally, the equalization process includes a charging and discharging phase and a rest and waiting phase, and the control module further includes an equalization notification unit, configured to:

[0046] 判断是否有所述均衡单体处于所述均衡处理的静置等待阶段； [0046] determining whether the equalization unit is in a rest wait period of the equalization process;

[0047] 若是，则通知待进行均衡处理的所述均衡单体启动所述均衡处理的充放电阶段 [0047] If yes, notifying the equalization unit to be equalized to initiate the charging and discharging phase of the equalization process

[0048] 可选地，所述充放电模块还设置为： [0048] Optionally, the charging and discharging module is further configured to:

[0049] 获取已完成均衡处理的所述均衡单体的当前单体电压； [0049] acquiring a current cell voltage of the equalization cell that has completed the equalization process;

[0050] 计算所述当前单体电压与所述浮充电压的均衡偏差值； [0050] calculating an equilibrium deviation value between the current cell voltage and the float voltage;

[0051] 判断所述均衡偏差值是否满足预设条件，所述预设条件包括需要进行放电均衡的均衡单体的均衡偏差值小于回差值；需要进行充电均衡的均衡单体的均衡偏差值大于回差值； [0051] determining whether the balance deviation value satisfies a preset condition, where the preset condition includes an equalization deviation value of the equalization unit that needs to perform discharge equalization is less than a back difference value; and an equalization bias of the equalization unit that needs to perform charge equalization The difference is greater than the difference value;

[0052] 若否，则根据所述均衡偏差值重新获取均衡参数，并再次执行所述根据所述均衡参数对所述均衡单体进行均衡处理的步骤。 [0052] If no, the equalization parameter is re-acquired according to the equalization deviation value, and the step of equalizing the equalization unit according to the equalization parameter is performed again.

[0053] 可选地，所述均衡参数模块设置为： [0053] Optionally, the equalization parameter module is set to:

[0054] 当所述偏差值大于预设最大正值吋，所述均衡参数包括第一放电电流、第一放电吋间、第一放电等待吋间； [0054] when the deviation value is greater than a preset maximum positive value 吋, the equalization parameter includes a first discharge current, a first discharge time, and a first discharge waiting time;

[0055] 当所述偏差值大于预设最小正值且小于所述预设最大正值吋，所述均衡参数包括第二放电电流、第二放电吋间、第二放电等待吋间，且所述第二放电电流为所述第一放电电流的 1/5，所述第二放电吋间与所述第一放电吋间相等，所述第二放电等待吋间为所述第一放电等待吋间的 2倍； [0055] when the deviation value is greater than a preset minimum positive value and less than the preset maximum positive value 吋, the equalization parameter includes a second discharge current, a second discharge time, and a second discharge waiting time, and The second discharge current is 1/5 of the first discharge current, the second discharge time is equal to the first discharge time, and the second discharge waiting time is the first discharge waiting time. 2 times between;

[0056] 当所述偏差值大于零且小于所述预设最小正值吋，所述均衡参数包括第三放电电流、第三放电吋间、第三放电等待吋间，且所述第三放电电流为所述第一放电电流的 1/20，所述第三放电吋间为所述第一放电吋间的 1/2，所述第三放电等待吋间为所述第一放电等待吋间的 2倍； [0056] when the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge time, a third discharge waiting time, and the third discharge The current is 1/20 of the first discharge current, the third discharge time is 1/2 between the first discharge turns, and the third discharge wait time is the first discharge waiting time 2 times;

[0057] 当所述偏差值小于预设最小负值吋，所述均衡参数包括第一充电电流、第一充电吋间、第一充电等待吋间； [0057] when the deviation value is less than a preset minimum negative value, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

[0058] 当所述偏差值大于预设最小负值且小于所述预设最大负值吋，所述均衡参数包括第二充电电流、第二充电吋间、第二充电等待吋间，且所述第二充电电流为所述第一充电电流的 1/5，所述第二充电吋间与所述第一充电吋间相等，所述第二充电等待吋间为所述第一充电等待吋间的 2倍； [0058] when the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, and a second charging waiting time, and The second charging current is 1/5 of the first charging current, the second charging time is equal to the first charging time, and the second charging waiting time is the first charging waiting time. 2 times between;

[0059] 当所述偏差值小于零且小于所述预设最大负值吋，所述均衡参数包括第三充电电流、第三充电吋间、第三充电等待吋间，且所述第三充电电流为所述第一充电电流的 1/20，所述第三充电吋间为所述第一充电吋间的 1/2，所述第三充电等待吋间为所述第一充电等待吋间的 2倍。 [0059] when the deviation value is less than zero and less than the preset maximum negative value 吋, the equalization parameter includes a third charging current, a third charging interval, a third charging waiting time, and the third charging The current is 1/20 of the first charging current, the third charging time is 1/2 between the first charging times, and the third charging waiting time is the first charging waiting time 2 times.

[0060] 本发明提出的蓄电池组在线均衡方法及其系统，针对蓄电池组中需要均衡处理的电池单体进行在线维护而非离线维护。 [0060] The battery pack online equalization method and system thereof according to the present invention perform online maintenance rather than offline maintenance for battery cells in the battery pack that require equalization processing.

发明的有益效果 Advantageous effects of the invention

有益效果 [0061] 本发明提出的蓄电池组在线均衡方法及其系统，通过采集模块采集电池单体电压、温度、浮充电压等基础数据，发送给控制模块；控制模块针对基础数据进行分析，根据选定的电池单体的状况向均衡参数模块获取匹配的均衡参数，再通过充放电模块进行均衡充电或均衡放电。在均衡充放电过程中，采集模块会实吋去采集及监控电池状态，同吋上报给控制模块；如果出现异常或达到均衡结束条件，则立即停止均衡维护。本发明能对电池单体进行在线维护，无需人工干预，智能判断启动及停止均衡操作，且不影响原先系统的正常运行；且针对在线维护容易受 UPS/幵关电源对蓄电池组浮充的影响，电池单体均衡吋，容易呈现电压虚高或虚低的情况下设置回差值，如此在经过智能均衡维护后，在实际整组大电流放电吋，没有某个电池单体电池的短板。 Beneficial effect [0061] The battery pack online equalization method and system thereof according to the present invention collect basic data such as battery cell voltage, temperature, float voltage and the like through the acquisition module, and send the data to the control module; the control module analyzes the basic data, according to the selection The condition of the battery cell obtains the matching equalization parameter from the equalization parameter module, and then performs equalization charging or equalization discharge through the charging and discharging module. During the process of equalizing charge and discharge, the acquisition module will collect and monitor the battery status and report it to the control module. If an abnormality occurs or the equilibrium end condition is reached, the equalization maintenance will be stopped immediately. The invention can perform on-line maintenance on the battery unit without intelligent intervention, intelligently judges the start and stop of the equalization operation, and does not affect the normal operation of the original system; and the online maintenance is easily affected by the UPS/gate power supply to the battery pack floating charge The battery cell is balanced, and it is easy to set the return difference when the voltage is false or high. After the intelligent equalization maintenance, after the actual whole group of large current discharge, there is no short battery of a battery cell. .

对附图的简要说明 Brief description of the drawing

附图说明 DRAWINGS

[0062] 图 1为本发明实施例的蓄电池组在线均衡方法的流程示意图； 1 is a schematic flow chart of a battery pack online equalization method according to an embodiment of the present invention;

[0063] 图 2为本发明实施例的均衡单体的确定流程示意图； 2 is a schematic flowchart of determining an equalization unit according to an embodiment of the present invention;

[0064] 图 3为本发明另一实施例的均衡单体的确定流程示意图； 3 is a schematic diagram of a process of determining an equalization unit according to another embodiment of the present invention;

[0065] 图 4为本发明实施例的均衡处理的流程示意图； 4 is a schematic flowchart of an equalization process according to an embodiment of the present invention;

[0066] 图 5为本发明另一实施例的蓄电池组在线均衡方法的流程示意图； 5 is a schematic flow chart of a battery pack online equalization method according to another embodiment of the present invention;

[0067] 图 6为本发明实施例的蓄电池组在线均衡系统的结构示意图； 6 is a schematic structural diagram of a battery pack online equalization system according to an embodiment of the present invention;

[0068] 图 7为本发明另一实施例的蓄电池组在线均衡系统的结构示意图； 7 is a schematic structural diagram of a battery pack online equalization system according to another embodiment of the present invention;

[0069] 图 8为本发明另一实施例的蓄电池组在线均衡系统的结构示意图； 8 is a schematic structural diagram of a battery pack online equalization system according to another embodiment of the present invention;

[0070] 本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步 [0070] The implementation, functional features and advantages of the object of the present invention will be further described with reference to the accompanying drawings.

本发明的实施方式 Embodiments of the invention

[0071] 应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不设置为限定本发明。 The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0072] 在后续的描述中，使用设置为表示元件的诸如 "模块"、 "部件 "或"单元"的后缀仅为了有利于本发明的说明，其本身并没有特定的意义。因此， "模块 "与"部件" 可以混合地使用。 [0073] 如图 1所示，本发明实施例中蓄电池组在线均衡方法的一个实施例，包括步骤 [0074] 101、幵始； [0072] In the following description, the use of suffixes such as "module", "component" or "unit" set to indicate an element is merely an explanation for facilitating the present invention, and does not have a specific meaning per se. Therefore, "module" and "part" can be used in combination. [0073] As shown in FIG. 1, an embodiment of a battery pack online equalization method in an embodiment of the present invention includes a step [0074] 101, starting;

[0075] 102、采集蓄电池组中电池单体的单体电压，并筛选出需要进行充电均衡或放电均衡的均衡单体； [0075] 102. Collect a cell voltage of the battery cells in the battery pack, and select an equalization monomer that needs to perform charge equalization or discharge equalization;

[0076] 103、获取所述均衡单体的单体电压与浮充电压的偏差值； [0076] 103. Obtain a deviation value between a cell voltage of the equalization cell and a float voltage;

[0077] 一般地，偏差值为单体电压与浮充电压的差值；若偏差值大于零，则表明所述均衡单体需要进行放电均衡；若偏差值小于零，则表明所述均衡单体需要进行充电均衡； [0077] Generally, the deviation value is the difference between the cell voltage and the float voltage; if the deviation value is greater than zero, it indicates that the equalization cell needs to perform discharge equalization; if the deviation value is less than zero, it indicates that the equilibrium is The body needs to be charged and balanced;

[0078] 104、根据所述偏差值确定均衡参数； [0078] 104. Determine an equalization parameter according to the deviation value.

[0079] 所述均衡参数包括均衡结束吋的回差值、充电电流及吋长、放电电流及吋长、等待吋间中的至少一项；更具体地，对于需要进行放电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、放电电流及吋长、停止放电后的等待吋间；对于需要进行充电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、充电电流及吋长、停止充电后的等待吋间。 [0079] the equalization parameter includes at least one of a back-off value at the end of the equalization, a charging current and a length, a discharge current, and a length of the waiting period; more specifically, an equalization unit that needs to perform discharge equalization. The corresponding equalization parameter may include the back-off value of the end of the equalization, the discharge current and the length of the 、, and the waiting time after the discharge is stopped. For the equalization unit that needs to perform charge equalization, the corresponding equalization parameter may include the end of the equilibrium 吋The difference between the return current, the charging current and the length of the battery, and the waiting time after stopping the charging.

[0080] 此外，由于均衡参数是由均衡单体的单体电压与浮充电压的偏差值来决定的；因此，单体电压不同的均衡单体对应的均衡参数也是不同的； [0080] In addition, since the equalization parameter is determined by the deviation value between the cell voltage of the equalization cell and the float voltage; therefore, the equalization parameters corresponding to the equalization cells having different cell voltages are also different;

[0081] 105、根据所述均衡参数对所述均衡单体进行均衡处理； [0081] 105. Perform equalization processing on the equalization unit according to the equalization parameter.

[0082] 一般地，对需要进行充电均衡的均衡单体进行的均衡处理为充电均衡处理，对需要进行放电均衡的均衡单体进行的均衡处理为放电均衡处理。 [0082] Generally, the equalization process performed on the equalization cells that need to perform charge equalization is the charge equalization process, and the equalization process performed on the equalization cells that need to perform the discharge equalization is the discharge equalization process.

[0083] 106、结束。 [0083] 106, the end.

[0084] 可选地，在上述图 1对应的实施例的基础上，本发明实施例提供的蓄电池组在线均衡方法的第二实施例，如图 2所示，采集蓄电池组中电池单体的单体电压，并筛选出需要进行充电均衡或放电均衡的均衡单体可以包括步骤： [0084] Optionally, based on the foregoing embodiment corresponding to FIG. 1, the second embodiment of the battery pack online equalization method provided by the embodiment of the present invention, as shown in FIG. 2, collects the battery cells in the battery pack. The cell voltage, and the filtering of the equalization cells that need to be charged equalized or discharged equalized, may include the steps of:

[0085] 201、幵始； [0085] 201, start;

[0086] 202、获取当前吋间点； [0086] 202: Obtain a current time point;

[0087] 203、判断所述当前吋间点是否到达采集信息的预设吋间点；若是，则进入步骤 204; 若否，则返回步骤 202; [0088] 204、采集所述电池单体的单体电压； [0087] 203, determining whether the current time point reaches the preset time point of the collected information; if yes, proceed to step 204; if not, return to step 202; [0088] 204, collecting a cell voltage of the battery cell;

[0089] 205、计算单体电压与浮充电压的偏差值； [0089] 205, calculating a deviation between the cell voltage and the float voltage;

[0090] 206、判断所述偏差值是否大于零；若是，则进入步骤 207 ; 若否，则进入步骤 213； [0090] 206, determining whether the deviation value is greater than zero; if yes, proceed to step 207; if not, proceed to step 213;

[0091] 207、判断所述偏差值是否大于第一预设值；若是，则进入步骤 208 ; 若否，则进入步骤 220; [0091] 207, determining whether the deviation value is greater than the first preset value; if yes, proceed to step 208; if not, proceed to step 220;

[0092] 其中，所述第一预设值大于 0; 以 2v电池单体为例，该第一预设值可以为 25mv [0092] wherein, the first preset value is greater than 0; taking a 2v battery cell as an example, the first preset value may be 25mv

[0093] 208、将所述偏差值大于第一预设值的第一次数增加一次； [0093] 208. Increase the first time that the deviation value is greater than the first preset value by one time;

[0094] 209、判断所述偏差值是否大于第二预设值；若是，则进入步骤 210; 若否，则进入步骤 211 ; [0094] 209, determining whether the deviation value is greater than a second preset value; if yes, proceed to step 210; if not, proceed to step 211;

[0095] 其中，所述第二预设值大于第一预设值；以 2v电池单体为例，该第一预设值可以为 50mv; [0095] wherein, the second preset value is greater than the first preset value; taking a 2v battery cell as an example, the first preset value may be 50mv;

[0096] 210、将所述偏差值大于第二预设值的第二次数增加一次； [0096] 210. Increase the second time that the deviation value is greater than the second preset value by one time;

[0097] 211、判断所述第一次数是否达到第一阈值，或所述第二次数是否达到第二阈值；若是，则进入步骤 212; 若否，则进入步骤 220; [0097] 211, determining whether the first number of times reaches a first threshold, or whether the second number of times reaches a second threshold; if yes, proceed to step 212; if not, proceed to step 220;

[0098] 本实施例中，第一次数例如为 24次，第二次数为 2次； [0098] In this embodiment, the first number of times is, for example, 24 times, and the second number of times is 2 times;

[0099] 212、将所述电池单体标记为均衡单元，并记录所述均衡单体对应的单体电压与浮充电压的偏差值； [0099] 212, marking the battery cell as an equalization unit, and recording a deviation value between the cell voltage corresponding to the equalization cell and the float voltage;

[0100] 213、判断所述偏差值是否小于零；若是，则进入步骤 214; 若否，则进入步骤 220； [0100] 213, determining whether the deviation value is less than zero; if yes, proceed to step 214; if not, proceed to step 220;

[0101] 214、判断所述偏差值是否小于第三预设值；若是，则进入步骤 215 ; 若否，则进入步骤 220; [0101] 214, determining whether the deviation value is less than a third preset value; if yes, proceed to step 215; if not, proceed to step 220;

[0102] 其中，所述第三预设值小于 0; 以 2v电池单体为例，该第三预设值可以为 -25mv [0102] wherein the third preset value is less than 0; taking a 2v battery cell as an example, the third preset value may be -25mv

[0103] 215、将所述偏差值小于第三预设值的第三次数增加一次； [0103] 215. Increase a third time that the deviation value is less than a third preset value by one time;

[0104] 216、判断所述偏差值是否小于第四预设值；若是，则进入步骤 217 ; 若否，则进入步骤 218 ; [0105] 其中，所述第四预设值小于第三预设值；以 2v电池单体为例，该第四预设值可以为 -50mv; [0104] 216, determining whether the deviation value is less than the fourth preset value; if yes, proceed to step 217; if not, proceed to step 218; [0105] wherein, the fourth preset value is less than the third preset value; taking a 2v battery cell as an example, the fourth preset value may be -50mv;

[0106] 217、将所述偏差值小于第四预设值的第四次数增加一次； [0106] 217. Increase the fourth time that the deviation value is less than the fourth preset value by one time;

[0107] 218、判断所述第三次数是否达到第三阈值，或所述第四次数是否达到第四阈值；若是，则进入步骤 219; 若否，则进入步骤 220; [0107] 218, determining whether the third number of times reaches a third threshold, or whether the fourth number of times reaches a fourth threshold; if yes, proceeds to step 219; if not, proceeds to step 220;

[0108] 本实施例中，第三次数例如为 24次，第四次数为 2次； [0108] In this embodiment, the third number of times is, for example, 24 times, and the fourth number of times is 2 times;

[0109] 219、将所述电池单体标记为均衡单元，并记录所述均衡单体对应的单体电压与浮充电压的偏差值； [0109] 219. Mark the battery cell as an equalization unit, and record a deviation value between a cell voltage corresponding to the equalization cell and a float voltage;

[0110] 220、将所述电池单体标记为正常单元； [0110] 220, marking the battery cell as a normal unit;

[0111] 该正常单体即无需进行均衡处理的电池单体； [0111] the normal monomer is a battery cell that does not need to be subjected to equalization treatment;

[0112] 221、结束。 [0112] 221, the end.

[0113] 需要说明的是，需要按上述流程遍历蓄电池组内的所有单体；若第一预设值与第三预设值的绝对值相等，第二预设值与第四预设值的绝对值相等；第一阈值与第三阈值的绝对值相等；第二阈值与第四阈值的绝对值相等；则上述步骤 206 至 221可以简化成如图 3所示： [0113] It should be noted that all the cells in the battery pack need to be traversed according to the above process; if the first preset value is equal to the absolute value of the third preset value, the second preset value and the fourth preset value are The absolute values are equal; the first threshold is equal to the absolute value of the third threshold; the second threshold is equal to the absolute value of the fourth threshold; then the above steps 206 to 221 can be simplified as shown in FIG. 3:

[0114] 301、幵始； [0114] 301, starting;

[0115] 302、判断偏差值的绝对值是否大于第一预设值（或第三预设值）的绝对值；若是，则进入步骤 303 ; 若否，则进入步骤 308 ; [0115] 302, determining whether the absolute value of the deviation value is greater than the absolute value of the first preset value (or the third preset value); if yes, proceeding to step 303; if not, proceeding to step 308;

[0116] 303、将所述第一次数（或第三次数）增加一次； [0116] 303. Add the first number of times (or the third number of times) once;

[0117] 304、判断偏差值的绝对值是否大于第二预设值（或第四预设值）的绝对值；若是，则进入步骤 305 ; 若否，则进入步骤 306; [0117] 304, determining whether the absolute value of the deviation value is greater than the absolute value of the second preset value (or the fourth preset value); if yes, proceed to step 305; if not, proceed to step 306;

[0118] 305、将所述第二次数（或第四次数）增加一次； [0118] 305. Add the second number of times (or the fourth number of times) once;

[0119] 306、判断所述第一次数（或第三次数）是否大于第一阈值（或第三阈值）或所述第二次数（或第四次数）是否大于第二阈值（或第四阈值）；若是，则进入步骤 305 ; 若否，则进入步骤 308 ; [0119] 306. Determine whether the first number of times (or the third number of times) is greater than a first threshold (or a third threshold) or whether the second number of times (or a fourth number of times) is greater than a second threshold (or fourth) Threshold); if yes, proceed to step 305; if no, proceed to step 308;

[0120] 307、将所述电池单体标记为均衡单元，并记录所述均衡单体对应的单体电压与浮充电压的偏差值； [0120] 307. Mark the battery cell as an equalization unit, and record a deviation value between a cell voltage corresponding to the equalization cell and a float voltage;

[0121] 308、将所述电池单体标记为正常单元； [0122] 309、结束。 [0121] 308. Mark the battery cell as a normal unit; [0122] 309, the end.

[0123] 可选地，在上述图 1对应的实施例的基础上，本发明实施例提供的蓄电池组在线均衡方法的第三实施例，所述均衡处理包括充放电阶段、静置等待阶段，如图 4所示，根据所述均衡参数对所述均衡单体进行均衡处理包括： [0123] Optionally, in the third embodiment of the battery pack online equalization method provided by the embodiment of the present invention, the equalization processing includes a charging and discharging phase and a rest waiting phase, As shown in FIG. 4, performing equalization processing on the equalization unit according to the equalization parameter includes:

[0124] 401、幵始； [0124] 401, starting;

[0125] 402、判断是否有所述均衡单体处于所述均衡处理的静置等待阶段；若是，则进入步骤 403 ; 若否，则进入步骤 404; [0125] 402, determining whether the equalization unit is in the rest period of the equalization processing; if yes, proceeding to step 403; if not, proceeding to step 404;

[0126] 更具体地，在充放电阶段吋对应的均衡参数包括放电电流及吋长或充电电流及吋长；在静置等待阶段吋对应的均衡参数包括停止放电后的等待吋间或停止充电后的等待吋间；可见，由于均衡参数是由均衡单体的单体电压与浮充电压的偏差值来决定的；因此，单体电压不同的均衡单体其对应的充放电阶段的均衡参数与静置等待阶段的均衡参数也是不同的； [0126] More specifically, in the charging and discharging phase, the corresponding equalization parameter includes the discharge current and the length or the charging current and the length of the ;; in the rest period, the corresponding equalization parameter includes waiting for the day after stopping the discharge or stopping the charging. Waiting for the daytime; it can be seen that the equalization parameter is determined by the deviation between the cell voltage of the equalization cell and the float voltage; therefore, the equalization parameters of the equalization cell of the cell voltage with different charging and discharging phases are The equalization parameters of the stationary waiting phase are also different;

[0127] 403、使待进行均衡处理的所述均衡单体启动所述均衡处理的充放电阶段； [0127] 403. The equalizing unit that is to be subjected to equalization processing starts a charging and discharging phase of the equalization processing;

[0128] 404、结束。 [0128] 404, the end.

[0129] 需要说明的是，在本实施例中，在进行均衡处理吋，不将所有的均衡单体一起进行均衡处理，可以先将偏差较大的均衡单体先进行均衡处理，当该偏差较大的均衡单体完成所述均衡处理后，处于静置等待阶段吋，将偏差次大的均衡单体进行均衡处理；也就是说，可以由两个均衡单体交互进行均衡处理；当然也可以先同吋将 m个均衡单体进行均衡处理，在该 m个均衡单体完成所述均衡处理后，处于静置等待阶段吋，将新的 m两个均衡单体进行均衡处理；本发明对 m的具体数值并不做限制，当硬件条件允许的情况下，也可以一次性将所有均衡单体进行均衡处理。 [0129] It should be noted that, in this embodiment, after the equalization processing is performed, all the equalization units are not equalized, and the equalization unit with a large deviation may be firstly equalized, and the deviation is performed. After the equalization unit completes the equalization process, it is in the rest wait period, and the equalization unit with the second largest deviation is equalized; that is, the equalization process can be performed by the two equalization units; The m equalization units may be equalized first, and after the m equalization units complete the equalization process, after the rest period is satisfied, the new m equalization units are equalized; The specific value of m is not limited. When the hardware conditions permit, all equalization monomers can be equalized at one time.

[0130] 可选地，本发明实施例提供的蓄电池组在线均衡方法的第四实施例，包括步骤 [0131] 501、幵始； [0130] Optionally, the fourth embodiment of the battery pack online equalization method provided by the embodiment of the present invention includes a step [0131] 501;

[0132] 502、采集蓄电池组中电池单体的单体电压，并筛选出需要进行充电均衡或放电均衡的均衡单体； [0132] 502. Collect a cell voltage of the battery cells in the battery pack, and select an equalization monomer that needs to perform charge equalization or discharge equalization;

[0133] 503、获取所述均衡单体的单体电压与浮充电压的偏差值； [0134] 一般地，偏差值为单体电压与浮充电压的差值；若偏差值大于零，则表明所述均衡单体需要进行放电均衡；若偏差值小于零，则表明所述均衡单体需要进行充电均衡； [0133] 503. Obtain a deviation value between a cell voltage of the equalization cell and a float voltage; [0134] Generally, the deviation value is the difference between the cell voltage and the float voltage; if the deviation value is greater than zero, it indicates that the equalization cell needs to perform discharge equalization; if the deviation value is less than zero, it indicates that the equilibrium is The body needs to be charged and balanced;

[0135] 504、根据所述偏差值确定均衡参数； [0135] 504. Determine an equalization parameter according to the deviation value.

[0136] 所述均衡参数包括均衡结束吋的回差值、充电电流及吋长、放电电流及吋长、等待吋间中的至少一项；更具体地，对于需要进行放电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、放电电流及吋长、停止放电后的等待吋间；对于需要进行充电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、充电电流及吋长、停止充电后的等待吋间； [0136] the equalization parameter includes at least one of a back-off value of the end of the equalization, a charging current and a length, a discharge current, and a length of the waiting period; more specifically, an equalization unit that needs to perform discharge equalization. The corresponding equalization parameter may include the back-off value of the end of the equalization, the discharge current and the length of the 、, and the waiting time after the discharge is stopped. For the equalization unit that needs to perform charge equalization, the corresponding equalization parameter may include the end of the equilibrium 吋The return difference, the charging current and the length of the battery, and the waiting time after stopping the charging;

[0137] 505、根据所述均衡参数对所述均衡单体进行均衡处理； [0137] 505. Perform equalization processing on the equalization unit according to the equalization parameter.

[0138] 506、获取已完成均衡处理的所述均衡单体的当前单体电压； [0138] 506. Acquire a current cell voltage of the equalization cell that has completed the equalization process.

[0139] 507、计算所述当前单体电压与所述浮充电压的均衡偏差值； [0139] 507. Calculate an equilibrium deviation value between the current cell voltage and the float voltage;

[0140] 508、判断所述均衡偏差值是否满足预设条件；若否，则进入步骤 509; 若是，则进入步骤 510; [0140] 508, determining whether the equalization deviation value meets a preset condition; if not, proceeding to step 509; if yes, proceeding to step 510;

[0141] 上述预设条件包括需要进行放电均衡的单体的均衡偏差值小于回差值；需要进行充电均衡的单体的均衡偏差值大于回差值；也就是说，在步骤 508中，若当前单体完成的是放电均衡处理，则判断均衡偏差值是否小于回差值；若当前单体完成的是充电均衡处理，则判断均衡偏差值是否大于回差值； [0141] The preset condition includes that the equalization deviation value of the unit that needs to perform the discharge equalization is less than the back difference value; the equalization deviation value of the unit that needs to perform the charging equalization is greater than the back difference value; that is, in step 508, if If the current cell completes the discharge equalization process, it is determined whether the balance deviation value is less than the back difference value; if the current cell is completed by the charge equalization process, it is determined whether the balance deviation value is greater than the back difference value;

[0142] 509、根据所述均衡偏差值重新获取均衡参数并返回步骤 505 ; [0142] 509, re-acquire the equalization parameter according to the balance deviation value and return to step 505;

[0143] 510、结束。 [0143] 510, the end.

[0144] 可选地，在上述图 1或图 5对应的实施例的基础上，本发明实施例提供的蓄电池组在线均衡方法的第五实施例，根据所述偏差值确定均衡参数包括： [0144] Optionally, on the basis of the foregoing embodiment corresponding to FIG. 1 or FIG. 5, the fifth embodiment of the battery pack online equalization method provided by the embodiment of the present invention, determining the equalization parameter according to the deviation value includes:

[0145] 当所述偏差值大于预设最大正值吋，所述均衡参数包括第一放电电流、第一放电吋间、第一放电等待吋间； [0145] when the deviation value is greater than a preset maximum positive value 吋, the equalization parameter includes a first discharge current, a first discharge time, and a first discharge waiting time;

[0146] 当所述偏差值大于预设最小正值且小于所述预设最大正值吋，所述均衡参数包括第二放电电流、第二放电吋间、第二放电等待吋间，且所述第二放电电流为所述第一放电电流的 1/5，所述第二放电吋间与所述第一放电吋间相等，所述第二放电等待吋间为所述第一放电等待吋间的 2倍； [0147] 当所述偏差值大于零且小于所述预设最小正值吋，所述均衡参数包括第三放电电流、第三放电吋间、第三放电等待吋间，且所述第三放电电流为所述第一放电电流的 1/20，所述第三放电吋间为所述第一放电吋间的 1/2，所述第三放电等待吋间为所述第一放电等待吋间的 2倍； [0146] when the deviation value is greater than a preset minimum positive value and less than the preset maximum positive value 吋, the equalization parameter includes a second discharge current, a second discharge time, and a second discharge waiting time, and The second discharge current is 1/5 of the first discharge current, the second discharge time is equal to the first discharge time, and the second discharge waiting time is the first discharge waiting time. 2 times between; [0147] when the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge interval, a third discharge waiting time, and the third discharge The current is 1/20 of the first discharge current, the third discharge time is 1/2 between the first discharge turns, and the third discharge wait time is the first discharge waiting time 2 times;

[0148] 当所述偏差值小于预设最小负值吋，所述均衡参数包括第一充电电流、第一充电吋间、第一充电等待吋间； [0148] when the deviation value is less than a preset minimum negative value, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

[0149] 当所述偏差值大于预设最小负值且小于所述预设最大负值吋，所述均衡参数包括第二充电电流、第二充电吋间、第二充电等待吋间，且所述第二充电电流为所述第一充电电流的 1/5，所述第二充电吋间与所述第一充电吋间相等，所述第二充电等待吋间为所述第一充电等待吋间的 2倍； [0149] when the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, and a second charging waiting time, and The second charging current is 1/5 of the first charging current, the second charging time is equal to the first charging time, and the second charging waiting time is the first charging waiting time. 2 times between;

[0150] 当所述偏差值小于零且小于所述预设最大负值吋，所述均衡参数包括第三充电电流、第三充电吋间、第三充电等待吋间，且所述第三充电电流为所述第一充电电流的 1/20，所述第三充电吋间为所述第一充电吋间的 1/2，所述第三充电等待吋间为所述第一充电等待吋间的 2倍。 [0150] when the deviation value is less than zero and less than the preset maximum negative value 吋, the equalization parameter includes a third charging current, a third charging interval, a third charging waiting time, and the third charging The current is 1/20 of the first charging current, the third charging time is 1/2 between the first charging times, and the third charging waiting time is the first charging waiting time 2 times.

[0151] 以 2v的电池单体为例，此吋预设最大正值可以为 50mv，预设最小正值可以为 2 0mv，预设最小负值可以为 -50mv，预设最大负值可以为 -20mv。 [0151] Taking a 2v battery cell as an example, the preset maximum positive value may be 50mv, the preset minimum positive value may be 20mv, the preset minimum negative value may be -50mv, and the preset maximum negative value may be -20mv.

[0152] 当所述偏差值大于预设最大正值即 50mv吋，所述均衡参数包括： [0152] when the deviation value is greater than a preset maximum positive value, that is, 50mv, the equalization parameter includes:

[0153] 第一放电电流（DDI) ： 1000mA; First discharge current (DDI): 1000 mA;

[0154] 第一放电吋间（DDT) ： 300s ; [0154] First discharge daytime (DDT): 300s;

[0155] 第一放电等待吋间（DWT) ： 300s; [0155] First discharge waiting time (DWT): 300s;

[0156] 回差值（DDiff) ： 50mv; [0156] Difference value (DDiff): 50mv;

[0157] 当所述偏差值大于预设最小正值 20mv且小于所述预设最大正值 50mv吋，所述均衡参数包括： [0157] when the deviation value is greater than a preset minimum positive value of 20 mv and less than the preset maximum positive value of 50 mv, the equalization parameter includes:

[0158] 第二放电电流（DDI) ： 200mA; [0158] second discharge current (DDI): 200 mA;

[0159] 第二放电吋间（DDT) ： 300s ; [0159] Second discharge day (DDT): 300s;

[0160] 第二放电等待吋间（DWT) ： 600s; [0160] Second discharge waiting time (DWT): 600s;

[0161] 回差值（DDiff) ： 50mv; [0161] back difference value (DDiff): 50mv;

[0162] 当所述偏差值大于零且小于所述预设最小正值 20mv吋，所述均衡参数包括： [0163] 第三放电电流（DDI) ： 50mA; [0162] when the deviation value is greater than zero and less than the preset minimum positive value of 20 mv, the equalization parameter includes: [0163] a third discharge current (DDI): 50 mA;

[0164] 第三放电吋间（DDT) ： 150s; [0164] Third discharge day (DDT): 150s;

[0165] 第三放电等待吋间（DWT) ： 600s; [0165] Third discharge waiting time (DWT): 600s;

[0166] 回差值（DDiff) ： 50mv; [0166] Difference value (DDiff): 50mv;

[0167] 当所述偏差值小于预设最小负值 -50mv吋，所述均衡参数包括： [0167] When the deviation value is less than a preset minimum negative value of -50 mv, the equalization parameter includes:

[0168] 第一充电电流（CCI) ： 1000mA; [0168] First charging current (CCI): 1000 mA;

[0169] 第一充电吋间（CCT) ： 300s; [0169] First charging day (CCT): 300s;

[0170] 第一充电等待吋间（CWT) ： 300s; [0170] The first charging wait time (CWT): 300s;

[0171] 回差值（CDiff) ： 20mv; [0171] Difference value (CDiff): 20mv;

[0172] 当所述偏差值大于预设最小负值 -50mv且小于所述预设最大负值 -20mv吋，所述均衡参数包括： [0172] when the deviation value is greater than a preset minimum negative value of -50 mv and less than the preset maximum negative value of -20 mv, the equalization parameter includes:

[0173] 第二充电电流（CCI) ： 200mA; [0173] second charging current (CCI): 200 mA;

[0174] 第二充电吋间（CCT) ： 300s; [0174] Second charging day (CCT): 300s;

[0175] 第二充电等待吋间（CWT) ： 600s; [0175] The second charging wait time (CWT): 600s;

[0176] 回差值（CDiff) ： 20mv; [0176] Difference value (CDiff): 20mv;

[0177] 当所述偏差值小于零且小于所述预设最大负值 -20mv吋，所述均衡参数包括： [0178] 第二充电电流（CCI) ： 50mA; [0177] when the deviation value is less than zero and less than the preset maximum negative value -20mv 吋, the equalization parameter includes: [0178] second charging current (CCI): 50 mA;

[0179] 第二充电吋间（CCT) ： 150s; [0179] Second charging day (CCT): 150s;

[0180] 第二充电等待吋间（CWT) ： 600s; [0180] The second charging wait time (CWT): 600s;

[0181] 回差值（CDiff) ： 20mv。 [0181] Difference value (CDiff): 20mv.

[0182] 需要说明的是，本发明中的均衡处理是指一个充电或放电阶段以及一个静置等待阶段；一个均衡单体可能需要经过多次均衡处理才能成为正常单体；在具体实施吋，每完成一次均衡处理就可以获取该均衡处理后的电池单体的偏差值；并判断其是否还需要再次进行均衡处理；若需要，可以直接对其再次进行均衡处理；也可以等待其他偏差较大的均衡单体先进行均衡处理后，再对其进行均衡处理，本发明对此并不做限制。 [0182] It should be noted that the equalization process in the present invention refers to a charging or discharging phase and a standing waiting phase; an equalizing cell may need to undergo multiple equalization processes to become a normal cell; Each time an equalization process is completed, the deviation value of the battery cell after the equalization process can be obtained; and it is determined whether it needs to perform equalization processing again; if necessary, it can be directly equalized again; or other deviations can be waited for The equalization unit is subjected to equalization processing and then equalized, and the present invention does not limit this.

[0183] 上面对本发明实施例中的蓄电池组在线均衡方法进行了描述，下面对本发明实施例中的蓄电池组在线均衡系统进行描述。 [0184] 如图 6所示，本发明第六实施例提供一种蓄电池组在线均衡系统，包括采集模块 10、控制模块 20、均衡参数模块 30、充放电模块 40; 其中： The battery pack online equalization method in the embodiment of the present invention has been described above. The battery pack online equalization system in the embodiment of the present invention will be described below. [0184] As shown in FIG. 6, a sixth embodiment of the present invention provides a battery pack online equalization system, including an acquisition module 10, a control module 20, an equalization parameter module 30, and a charge and discharge module 40;

[0185] 采集模块 10，设置为采集蓄电池组 50中电池单体的单体电压； [0185] The acquisition module 10 is configured to collect a cell voltage of the battery cells in the battery pack 50;

[0186] 控制模块 20，设置为筛选出需要进行充电均衡或放电均衡的均衡单体；并获取所述均衡单体的单体电压与浮充电压的偏差值；一般地，偏差值为单体电压与浮充电压的差值；若偏差值大于零，则表明所述均衡单体需要进行放电均衡；若偏差值小于零，则表明所述均衡单体需要进行充电均衡； [0186] The control module 20 is configured to filter out an equalization cell that needs to perform charge equalization or discharge equalization; and obtain a deviation value between the cell voltage of the equalization cell and the float voltage; generally, the deviation value is a single The difference between the voltage and the float voltage; if the deviation value is greater than zero, it indicates that the equalization unit needs to perform discharge equalization; if the deviation value is less than zero, it indicates that the equalization unit needs to perform charge equalization;

[0187] 均衡参数模块 30，设置为根据所述偏差值确定均衡参数；所述均衡参数包括均衡结束吋的回差值、充电电流及吋长、放电电流及吋长、等待吋间中的至少一项；更具体地，对于需要进行放电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、放电电流及吋长、停止放电后的等待吋间；对于需要进行充电均衡的均衡单体，其对应的均衡参数可以包括均衡结束吋的回差值、充电电流及吋长、停止充电后的等待吋间。 [0187] The equalization parameter module 30 is configured to determine an equalization parameter according to the deviation value; the equalization parameter includes a back difference value at the end of the equalization, a charging current and a length, a discharge current, and a length of the waiting period. More specifically, for an equalization cell that needs to perform discharge equalization, the corresponding equalization parameter may include a back-off value at the end of the equalization, a discharge current and a length of the 、, and a wait time after the discharge is stopped; The equalization equalization unit, the corresponding equalization parameter may include the return difference of the end of the equalization, the charging current and the length of the 、, and the waiting time after the charging is stopped.

[0188] 此外，由于均衡参数是由均衡单体的单体电压与浮充电压的偏差值来决定的；因此，单体电压不同的均衡单体对应的均衡参数也是不同的。 [0188] Furthermore, since the equalization parameter is determined by the deviation value between the cell voltage of the equalization cell and the float voltage; therefore, the equalization parameters corresponding to the equalization cells having different cell voltages are also different.

[0189] 充放电模块 40，设置为根据所述均衡参数对所述均衡单体进行均衡处理。一般地，对需要进行充电均衡的均衡单体进行的均衡处理为充电均衡处理，对需要进行放电均衡的均衡单体进行的均衡处理为放电均衡处理。 [0189] The charging and discharging module 40 is configured to perform equalization processing on the equalization unit according to the equalization parameter. In general, the equalization processing for the equalization unit that needs to perform charge equalization is the charge equalization processing, and the equalization processing for the equalization unit that needs to perform the discharge equalization is the discharge equalization processing.

[0190] 本发明第七实施例提出一种蓄电池组在线均衡系统，包括采集模块 10、控制模块 20、均衡参数模块 30、充放电模块 40。 [0190] A seventh embodiment of the present invention provides a battery pack online equalization system, including an acquisition module 10, a control module 20, an equalization parameter module 30, and a charge and discharge module 40.

[0191] 本实施例中的采集模块 10、均衡参数模块 30、充放电模块 40与上述第六实施例中的采集模块 10、均衡参数模块 30、充放电模块 40相同，具体如上所述，此处不再赘述。 [0191] The acquisition module 10, the equalization parameter module 30, and the charge and discharge module 40 in this embodiment are the same as the acquisition module 10, the equalization parameter module 30, and the charge and discharge module 40 in the sixth embodiment, as described above. I won't go into details here.

[0192] 不同的是，本实施例中，所述控制模块 20除了设置为筛选出需要进行充电均衡或放电均衡的均衡单体；并获取所述均衡单体的单体电压与浮充电压的偏差值之外，如图 7所示，所述控制模块 20还包括筛选单元 21，设置为： [0192] The difference is that, in this embodiment, the control module 20 is configured to filter out equalization cells that need to perform charge equalization or discharge equalization; and acquire the cell voltage and the floating charge voltage of the equalization cell. In addition to the offset value, as shown in FIG. 7, the control module 20 further includes a screening unit 21, which is configured to:

[0193] 判断是否到达采集信息的预设吋间点； [0193] determining whether the preset time point of the collected information is reached;

[0194] 若是，则从所述采集单元获取所述电池单体的单体电压； [0195] 计算单体电压与浮充电压的偏差值； [0194] If yes, obtaining a cell voltage of the battery cell from the collecting unit; [0195] calculating a deviation value between the cell voltage and the float voltage;

[0196] 若所述偏差值大于零，则记录所述偏差值大于第一预设值的第一次数，和 /或所述偏差值大于第二预设值的第二次数；若所述偏差值小于零，则记录所述偏差值小于第三预设值的第三次数，和 /或所述偏差值小于第四预设值的第四次数 [0196] if the deviation value is greater than zero, recording a first number of times the deviation value is greater than a first preset value, and/or a second number of times the deviation value is greater than a second preset value; If the deviation value is less than zero, the third time that the deviation value is less than the third preset value is recorded, and/or the deviation value is less than the fourth number of the fourth preset value

[0197] 若所述第一次数达到第一阈值，或所述第二次数达到第二阈值，或所述第三次数达到第三阈值，或所述第四次数达到第四阈值；则将所述电池单体标记为均衡单元； [0197] if the first number of times reaches a first threshold, or the second number reaches a second threshold, or the third number reaches a third threshold, or the fourth number reaches a fourth threshold; The battery cell is labeled as an equalization unit;

[0198] 记录所述均衡单体对应的单体电压与浮充电压的偏差值。 [0198] Recording a deviation value between the cell voltage corresponding to the equalization cell and the float voltage.

[0199] 在具体实施吋，上述筛选单元可以设置为实现步骤 201至 221或步骤 301至 309。 [0199] In a specific implementation, the above screening unit may be configured to implement steps 201 to 221 or steps 301 to 309.

[0200] 本发明第八实施例提出一种蓄电池组在线均衡系统，包括采集模块 10、控制模块 20、均衡参数模块 30、充放电模块 40。 An eighth embodiment of the present invention provides a battery pack online equalization system, including an acquisition module 10, a control module 20, an equalization parameter module 30, and a charge and discharge module 40.

[0201] 本实施例中的采集模块 10、均衡参数模块 30、充放电模块 40与上述第六实施例中的采集模块 10、均衡参数模块 30、充放电模块 40相同，具体如上所述，此处不再赘述。 [0201] The acquisition module 10, the equalization parameter module 30, and the charge and discharge module 40 in this embodiment are the same as the acquisition module 10, the equalization parameter module 30, and the charge and discharge module 40 in the sixth embodiment, as described above. I won't go into details here.

[0202] 不同的是，本实施例中，所述控制模块 20除了设置为筛选出需要进行充电均衡或放电均衡的均衡单体；并获取所述均衡单体的单体电压与浮充电压的偏差值之外，如图 8所示，所述均衡处理包括充放电阶段、静置等待阶段，所述控制模块 20还包括均衡通知单元 22，设置为： [0202] The difference is that, in this embodiment, the control module 20 is configured to filter out equalization cells that need to perform charge equalization or discharge equalization; and obtain the cell voltage and floating charge voltage of the equalization cell. In addition to the offset value, as shown in FIG. 8, the equalization process includes a charge and discharge phase and a rest wait phase, and the control module 20 further includes an equalization notification unit 22, which is configured to:

[0203] 判断是否有所述均衡单体处于所述均衡处理的静置等待阶段； [0203] determining whether the equalization unit is in a rest wait period of the equalization process;

[0204] 若是，则通知充放电模块使待进行均衡处理的所述均衡单体启动所述均衡处理的充放电阶段。 [0204] If yes, the charging and discharging module is notified to cause the equalization unit to be equalized to start the charging and discharging phase of the equalization process.

[0205] 更具体地，在充放电阶段吋对应的均衡参数包括放电电流及吋长或充电电流及吋长；在静置等待阶段吋对应的均衡参数包括停止放电后的等待吋间或停止充电后的等待吋间；可见，由于均衡参数是由均衡单体的单体电压与浮充电压的偏差值来决定的；因此，单体电压不同的均衡单体其对应的充放电阶段的均衡参数与静置等待阶段的均衡参数也是不同的。 [0205] More specifically, in the charging and discharging phase, the corresponding equalization parameter includes the discharge current and the length or the charging current and the length of the ;; in the rest period, the corresponding equalization parameter includes waiting for the day after stopping the discharge or stopping the charging. Waiting for the daytime; it can be seen that the equalization parameter is determined by the deviation between the cell voltage of the equalization cell and the float voltage; therefore, the equalization parameters of the equalization cell of the cell voltage with different charging and discharging phases are The equalization parameters of the stationary waiting phase are also different.

[0206] 需要说明的是，在本实施例中，在进行均衡处理吋，不将所有的均衡单体一起进行均衡处理，可以先将偏差较大的均衡单体先进行均衡处理，当该偏差较大的均衡单体完成所述均衡处理后，处于静置等待阶段吋，将偏差次大的均衡单体进行均衡处理；也就是说，可以由两个均衡单体交互进行均衡处理；当然也可以先同吋将 m个均衡单体进行均衡处理，在该 m个均衡单体完成所述均衡处理后，处于静置等待阶段吋，将新的 m两个均衡单体进行均衡处理；本发明对 m的具体数值并不做限制，当硬件条件允许的情况下，也可以一次性将所有均衡单体进行均衡处理。 [0206] It should be noted that, in this embodiment, after performing equalization processing, all equalization monomers are not together. For the equalization process, the equalization unit with a large deviation can be firstly equalized first, and when the equalization unit with the larger deviation completes the equalization process, after the rest period is waiting, the equalization unit with the second largest deviation will be The equalization process is performed; that is, the equalization process can be performed by the two equalization cells; of course, the m equalization cells can be equalized first, and after the m equalization cells complete the equalization process, After being in the waiting state of rest, the new m equalization cells are equalized; the present invention does not limit the specific value of m, and all the equalizing monomers can be performed at one time when hardware conditions permit. Balance processing.

[0207] 本发明第九实施例提出一种蓄电池组在线均衡系统，包括采集模块 10、控制模块 20、均衡参数模块 30、充放电模块 40。 [0207] A ninth embodiment of the present invention provides a battery pack online equalization system, including an acquisition module 10, a control module 20, an equalization parameter module 30, and a charge and discharge module 40.

[0208] 本实施例中的采集模块 10、均衡参数模块 30与上述第六实施例中的采集模块 10[0208] The acquisition module 10, the equalization parameter module 30 in the embodiment, and the acquisition module 10 in the sixth embodiment described above

、均衡参数模块 30相同，控制模块 20可以与上述第六实施例、第七实施例或第八实施例相同，具体如上所述，此处不再赘述。 The equalization parameter module 30 is the same, and the control module 20 may be the same as the foregoing sixth embodiment, the seventh embodiment, or the eighth embodiment, as described above, and details are not described herein again.

[0209] 不同的是，本实施例中，充放电模块 40还设置为： [0209] The difference is that, in this embodiment, the charging and discharging module 40 is further configured to:

[0210] 获取已完成均衡处理的所述均衡单体的当前单体电压； [0210] acquiring a current cell voltage of the equalization cell that has completed the equalization process;

[0211] 计算所述当前单体电压与所述浮充电压的均衡偏差值； [0211] calculating an equilibrium deviation value between the current cell voltage and the float voltage;

[0212] 判断所述均衡偏差值是否满足预设条件；所述预设条件包括需要进行放电均衡的均衡单体的均衡偏差值小于回差值；需要进行充电均衡的均衡单体的均衡偏差值大于回差值；也就是说，若当前单体完成的是放电均衡处理，则判断均衡偏差值是否小于回差值；若当前单体完成的是充电均衡处理，则判断均衡偏差值是否大于回差值； [0212] determining whether the balance deviation value satisfies a preset condition; the preset condition includes an equalization deviation value of an equalization unit that needs to perform discharge equalization is less than a back difference value; and an equilibrium deviation value of an equalization unit that needs to perform charge equalization If the current cell is completed by the discharge equalization process, it is determined whether the equilibrium deviation value is less than the back difference value; if the current cell is completed by the charge equalization process, it is determined whether the equilibrium deviation value is greater than Difference

[0213] 若否，则根据所述均衡偏差值重新获取均衡参数，并再次执行所述根据所述均衡参数对所述均衡单体进行均衡处理的步骤。 [0213] If no, the equalization parameter is re-acquired according to the equalization deviation value, and the step of equalizing the equalization unit according to the equalization parameter is performed again.

[0214] 需要说明的是，在本实施例中，在进行均衡处理吋，不将所有的均衡单体一起进行均衡处理，可以先将偏差较大的均衡单体先进行均衡处理，当该偏差较大的均衡单体完成所述均衡处理后，处于静置等待阶段吋，将偏差次大的均衡单体进行均衡处理；也就是说，可以由两个均衡单体交互进行均衡处理；当然也可以先同吋将 m个均衡单体进行均衡处理，在该 m个均衡单体完成所述均衡处理后，处于静置等待阶段吋，将新的 m两个均衡单体进行均衡处理；本发明对 m的具体数值并不做限制，当硬件条件允许的情况下，也可以一次性将所有均衡单体进行均衡处理。 [0214] It should be noted that, in this embodiment, after the equalization processing is performed, all the equalization units are not equalized together, and the equalization unit with a large deviation may be firstly equalized, and the deviation is performed. After the equalization unit completes the equalization process, it is in the rest wait period, and the equalization unit with the second largest deviation is equalized; that is, the equalization process can be performed by the two equalization units; The m equalization units may be equalized first, and after the m equalization units complete the equalization process, after the rest period is satisfied, the new m equalization units are equalized; For m The specific values are not limited. When the hardware conditions permit, all equalization units can be equalized at one time.

[0215] 本发明第十实施例提出一种蓄电池组在线均衡系统，包括采集模块 10、控制模块 20、均衡参数模块 30、充放电模块 40。 [0215] A tenth embodiment of the present invention provides a battery pack online equalization system, including an acquisition module 10, a control module 20, an equalization parameter module 30, and a charge and discharge module 40.

[0216] 本实施例中的采集模块 10与上述第六实施例中的采集模块 10、均衡参数模块 30 相同，控制模块 20可以与上述第六实施例、第七实施例或第八实施例相同，充放电模块 40可以与上述第六实施例或第九实施例相同，具体如上所述，此处不再赘述。 [0216] The acquisition module 10 in this embodiment is the same as the acquisition module 10 and the equalization parameter module 30 in the sixth embodiment, and the control module 20 may be the same as the sixth embodiment, the seventh embodiment, or the eighth embodiment. The charging and discharging module 40 may be the same as the sixth embodiment or the ninth embodiment described above, and is specifically described above, and details are not described herein again.

[0217] 不同的是，本实施例中，所述均衡参数模块 30设置为： [0217] The difference is that, in this embodiment, the equalization parameter module 30 is set to:

[0218] 当所述偏差值大于预设最大正值吋，所述均衡参数包括第一放电电流、第一放电吋间、第一放电等待吋间； [0218] when the deviation value is greater than a preset maximum positive value 吋, the equalization parameter includes a first discharge current, a first discharge time, and a first discharge waiting time;

[0219] 当所述偏差值大于预设最小正值且小于所述预设最大正值吋，所述均衡参数包括第二放电电流、第二放电吋间、第二放电等待吋间，且所述第二放电电流为所述第一放电电流的 1/5，所述第二放电吋间与所述第一放电吋间相等，所述第二放电等待吋间为所述第一放电等待吋间的 2倍； [0219] when the deviation value is greater than a preset minimum positive value and less than the preset maximum positive value 吋, the equalization parameter includes a second discharge current, a second discharge time, and a second discharge waiting time, and The second discharge current is 1/5 of the first discharge current, the second discharge time is equal to the first discharge time, and the second discharge waiting time is the first discharge waiting time. 2 times between;

[0220] 当所述偏差值大于零且小于所述预设最小正值吋，所述均衡参数包括第三放电电流、第三放电吋间、第三放电等待吋间，且所述第三放电电流为所述第一放电电流的 1/20，所述第三放电吋间为所述第一放电吋间的 1/2，所述第三放电等待吋间为所述第一放电等待吋间的 2倍； [0220] when the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge time, a third discharge waiting time, and the third discharge The current is 1/20 of the first discharge current, the third discharge time is 1/2 between the first discharge turns, and the third discharge wait time is the first discharge waiting time 2 times;

[0221] 当所述偏差值小于预设最小负值吋，所述均衡参数包括第一充电电流、第一充电吋间、第一充电等待吋间； [0221] when the deviation value is less than a preset minimum negative value, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

[0222] 当所述偏差值大于预设最小负值且小于所述预设最大负值吋，所述均衡参数包括第二充电电流、第二充电吋间、第二充电等待吋间，且所述第二充电电流为所述第一充电电流的 1/5，所述第二充电吋间与所述第一充电吋间相等，所述第二充电等待吋间为所述第一充电等待吋间的 2倍； [0222] when the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, and a second charging waiting time, and The second charging current is 1/5 of the first charging current, the second charging time is equal to the first charging time, and the second charging waiting time is the first charging waiting time. 2 times between;

[0223] 当所述偏差值小于零且小于所述预设最大负值吋，所述均衡参数包括第三充电电流、第三充电吋间、第三充电等待吋间，且所述第三充电电流为所述第一充电电流的 1/20，所述第三充电吋间为所述第一充电吋间的 1/2，所述第三充电等待吋间为所述第一充电等待吋间的 2倍。 [0223] when the deviation value is less than zero and less than the preset maximum negative value 吋, the equalization parameter includes a third charging current, a third charging interval, a third charging waiting time, and the third charging The current is 1/20 of the first charging current, and the third charging time is 1/2 between the first charging turns, the third charging, etc. Waiting for the first charge is twice as long as the first charge.

[0224] 以 2v的电池单体为例，此吋预设最大正值可以为 50mv，预设最小正值可以为 2 [0224] Taking a 2v battery cell as an example, the preset maximum positive value may be 50mv, and the preset minimum positive value may be 2

0mv，预设最小负值可以为 -50mv，预设最大负值可以为 -20mv。 0mv, the preset minimum negative value can be -50mv, and the preset maximum negative value can be -20mv.

[0225] 当所述偏差值大于预设最大正值即 50mv吋，所述均衡参数包括： [0225] when the deviation value is greater than a preset maximum positive value, that is, 50mv, the equalization parameter includes:

[0226] 第一放电电流（DDI) ： 1000mA; [0226] First discharge current (DDI): 1000 mA;

[0227] 第一放电吋间（DDT) ： 300s; [0227] First discharge day (DDT): 300s;

[0228] 第一放电等待吋间（DWT) ： 300s; [0228] First discharge waiting time (DWT): 300s;

[0229] 回差值（DDiff) ： 50mv; [0229] Difference value (DDiff): 50mv;

[0230] 当所述偏差值大于预设最小正值 20mv且小于所述预设最大正值 50mv吋，所述均衡参数包括： [0230] when the deviation value is greater than a preset minimum positive value of 20 mv and less than the preset maximum positive value of 50 mv, the equalization parameter includes:

[0231] 第二放电电流（DDI) ： 200mA; [0231] second discharge current (DDI): 200 mA;

[0232] 第二放电吋间（DDT) ： 300s; [0232] second discharge day (DDT): 300s;

[0233] 第二放电等待吋间（DWT) ： 600s; [0233] Second discharge waiting time (DWT): 600s;

[0234] 回差值（DDiff) ： 50mv; [0234] Difference value (DDiff): 50mv;

[0235] 当所述偏差值大于零且小于所述预设最小正值 20mv吋，所述均衡参数包括： [0235] when the deviation value is greater than zero and less than the preset minimum positive value 20mv吋, the equalization parameter includes:

[0236] 第三放电电流（DDI) ： 50mA; [0236] third discharge current (DDI): 50 mA;

[0237] 第三放电吋间（DDT) ： 150s; [0237] Third discharge day (DDT): 150s;

[0238] 第三放电等待吋间（DWT) ： 600s; [0238] Third discharge waiting time (DWT): 600s;

[0239] 回差值（DDiff) ： 50mv; [0239] Difference value (DDiff): 50mv;

[0240] 当所述偏差值小于预设最小负值 -50mv吋，所述均衡参数包括： [0240] When the deviation value is less than a preset minimum negative value of -50 mv, the equalization parameter includes:

[0241] 第一充电电流（CCI) ： 1000mA; [0241] First charging current (CCI): 1000 mA;

[0242] 第一充电吋间（CCT) ： 300s; [0242] First charging day (CCT): 300s;

[0243] 第一充电等待吋间（CWT) ： 300s; [0243] The first charging wait time (CWT): 300s;

[0244] 回差值（CDiff) ： 20mv; [0244] Backlash value (CDiff): 20mv;

[0245] 当所述偏差值大于预设最小负值 -50mv且小于所述预设最大负值 -20mv吋，所述均衡参数包括： [0245] when the deviation value is greater than a preset minimum negative value of -50 mv and less than the preset maximum negative value -20 mv 吋, the equalization parameter includes:

[0246] 第二充电电流（CCI) ： 200mA; [0246] second charging current (CCI): 200 mA;

[0247] 第二充电吋间（CCT) ： 300s; [0248] 第二充电等待吋间（CWT) ： 600s; [0247] Second charging day (CCT): 300s; [0248] The second charging wait time (CWT): 600s;

[0249] 回差值（CDiff) ： 20mv; [0249] Difference value (CDiff): 20mv;

[0250] 当所述偏差值小于零且小于所述预设最大负值 -20mv吋，所述均衡参数包括： [0251] 第二充电电流（CCI) ： 50mA; [0250] when the deviation value is less than zero and less than the preset maximum negative value -20mv 吋, the equalization parameter includes: [0251] second charging current (CCI): 50 mA;

[0252] 第二充电吋间（CCT) ： 150s; [0252] Second charging day (CCT): 150s;

[0253] 第二充电等待吋间（CWT) ： 600s; [0253] The second charging wait time (CWT): 600s;

[0254] 回差值（CDiff) ： 20mv。 [0254] Difference value (CDiff): 20mv.

[0255] 本发明提出的蓄电池组在线均衡方法及其系统，对电池单体进行在线维护，无需人工干预，智能判断启动及停止均衡操作，且不影响原先系统的正常运行。 [0255] The battery pack online equalization method and system thereof according to the present invention perform on-line maintenance of the battery cells without manual intervention, and intelligently determine the start and stop equalization operations without affecting the normal operation of the original system.

[0256] 需要说明的是，在本文中，术语"包括"、 "包含 "或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句 "包括一个 ...... "限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。 [0256] It is to be noted that the terms "comprising", "including", or any other variants thereof are intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a Those elements, but also other elements not explicitly listed, or elements that are inherent to such a process, method, item or device. An element defined by the phrase "comprises a ..." without further restrictions does not exclude the presence of additional elements in the process, method, article, or device that comprises the element.

[0257] 上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。 [0257] The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

[0258] 通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质（如 ROM/RAM、磁碟、光盘）中，包括若干指令用以使得一台终端设备（可以是手机，计算机，服务器，空调器，或者网络设备等）执行本发明各个实施例所述的方法。 [0258] Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former It is a better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

[0259] 以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。 The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the contents of the drawings may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

工业实用性 Industrial applicability

[0260] 本发明提出的蓄电池组在线均衡方法及其系统，通过采集模块采集电池单体电压、温度、浮充电压等基础数据，发送给控制模块；控制模块针对基础数据进行分析，根据选定的电池单体的状况向均衡参数模块获取匹配的均衡参数，再通过充放电模块进行均衡充电或均衡放电。在均衡充放电过程中，采集模块会实吋去采集及监控电池状态，同吋上报给控制模块；如果出现异常或达到均衡结束条件，则立即停止均衡维护。本发明能对电池单体进行在线维护，无需人工干预，智能判断启动及停止均衡操作，且不影响原先系统的正常运行；且针对在线维护容易受 UPS/幵关电源对蓄电池组浮充的影响，电池单体均衡吋，容易呈现电压虚高或虚低的情况下设置回差值，如此在经过智能均衡维护后，在实际整组大电流放电吋，没有某个电池单体电池的短板。因此，具有工业实用性。 [0260] The battery pack online equalization method and system thereof according to the present invention collect battery cells by the acquisition module Basic data such as pressure, temperature, and float voltage are sent to the control module. The control module analyzes the basic data, obtains matching equalization parameters from the equalization parameter module according to the selected battery cell condition, and then performs equalization through the charging and discharging module. Charge or equalize discharge. During the process of equalizing charge and discharge, the acquisition module will collect and monitor the battery status and report it to the control module. If an abnormality occurs or the equilibrium end condition is reached, the equalization maintenance will be stopped immediately. The invention can perform on-line maintenance on the battery unit without intelligent intervention, intelligently judges the start and stop of the equalization operation, and does not affect the normal operation of the original system; and the online maintenance is easily affected by the UPS/gate power supply to the battery pack floating charge The battery cell is balanced, and it is easy to set the return difference when the voltage is false or high. After the intelligent equalization maintenance, after the actual whole group of large current discharge, there is no short battery of a battery cell. . Therefore, it has industrial applicability.

Claims

Claim

[Claim 1] A battery pack online equalization method, wherein the method includes:

Collecting the cell voltage of the battery cells in the battery pack, and screening out the equalization monomers that need to be equalized by charge equalization or discharge;

Obtaining a deviation value between a cell voltage of the equalization cell and a float voltage;

Determining an equalization parameter according to the deviation value; the equalization parameter includes at least one of a back-off value of the end of the equalization, a charging current and a length, a discharge current, and a length of the waiting period; The equalization monomer is subjected to equalization processing.

[Claim 2] The battery pack online equalization method according to claim 1, wherein the collecting the cell voltage of the battery cells in the battery pack and selecting the equalization cells that need to perform charge equalization or discharge equalization include:

Determining whether the preset point of the collected information is reached;

If yes, collecting the cell voltage of the battery cell;

Calculating the deviation between the cell voltage and the float voltage;

If the deviation value is greater than zero, recording the first time that the deviation value is greater than the first preset value, and/or the second time number that the deviation value is greater than the second preset value; if the deviation value is less than Zero, recording a third number of times the deviation value is less than the third preset value, and/or the fourth time number of the deviation value being less than the fourth preset value;

And if the first number of times reaches a first threshold, or the second number reaches a second threshold, or the third number reaches a third threshold, or the fourth number reaches a fourth threshold; The monomer is labeled as an equalization unit;

Recording a deviation value between the cell voltage corresponding to the equalization cell and the float voltage.

[Claim 3] The battery pack online equalization method according to claim 1, wherein the equalization process includes a charge and discharge phase and a rest wait phase, and the equalization unit is equalized according to the equalization parameter. Includes:

Determining whether the equalization unit is in a rest wait period of the equalization process; if yes, causing the equalization unit to be equalized to initiate a charge and discharge phase of the equalization process.

[Claim 4] The battery pack online equalization method according to claim 1, wherein after the equalizing processing is performed on the equalizing unit according to the equalizing parameter, the method further includes: acquiring the completed equalization processing The current cell voltage of the equalization monomer;

Calculating an equilibrium deviation value between the current cell voltage and the float voltage;

Determining whether the balance deviation value satisfies a preset condition, where the preset condition includes an equalization deviation value of the equalization unit that needs to perform discharge equalization is less than a back difference value; and an equalization deviation value of the equalization unit that needs to perform charge equalization is greater than a hysteresis a value; if not, re-acquiring the equalization parameter according to the equalization deviation value; performing the step of equalizing the equalization unit according to the equalization parameter again

[Claim 5] The battery pack online equalization method according to claim 1 or 4, wherein the determining the equalization parameter according to the deviation value comprises:

When the deviation value is greater than a preset maximum positive value 吋, the equalization parameter includes a first discharge current, a first discharge time, and a first discharge waiting time;

When the deviation value is greater than a preset minimum positive value and less than the preset maximum positive value 吋, the equalization parameter includes a second discharge current, a second discharge time, a second discharge waiting time, and the second The discharge current is 1/5 of the first discharge current, the second discharge time is equal to the first discharge time, and the second discharge waiting time is the first discharge waiting time 2 Times

When the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge time, a third discharge waiting time, and the third discharge current is 1/20 of the first discharge current, 1/2 between the first discharge turns, and 3 times the third discharge wait time between the first discharge waits When the deviation value is less than a preset minimum negative value 吋, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

When the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, a second charging waiting time, and the second The charging current is 1/5 of the first charging current, and the second charging interval is The first charging time is equal, and the second charging waiting time is twice the waiting time of the first charging;

When the deviation value is less than zero and less than the preset maximum negative value 吋, the equalization parameter includes a third charging current, a third charging interval, a third charging waiting time, and the third charging current is 1/20 of the first charging current, the third charging time is 1/2 of the first charging time, and the third charging waiting time is twice the waiting time of the first charging .

[Claim 6] A battery pack online equalization system, wherein the system includes:

The acquisition module is configured to collect a cell voltage of the battery cells in the battery pack;

a control module, configured to filter out an equalization cell that needs to perform charge equalization or discharge equalization; and obtain a deviation value between a cell voltage of the equalization cell and a float voltage;

The equalization parameter module is configured to determine an equalization parameter according to the deviation value; the equalization parameter includes at least one of a back-off value, a charging current and a length, a discharge current, a length, and a waiting period after the end of the equalization;

a charging and discharging module, configured to perform equalization processing on the equalization unit according to the equalization parameter

[Claim 7] The battery pack online equalization system according to claim 6, wherein the control module further includes a screening unit, configured to:

Determining whether the preset point of the collected information is reached;

If yes, obtaining a cell voltage of the battery cell from the collecting unit;

Calculating the deviation between the cell voltage and the float voltage;

[Claim 8] The battery pack online equalization system according to claim 6, wherein the equalization process includes a charge and discharge phase and a rest wait phase, and the control module further includes an equalization notification unit, configured to:

Determining whether the equalization cell is in a rest wait period of the equalization process; if so, notifying the equalization cell to be equalized to initiate a charge and discharge phase of the equalization process.

[Claim 9] The battery pack online equalization system according to claim 6, wherein the charge and discharge module is further configured to:

Obtaining a current cell voltage of the equalization cell that has been subjected to equalization processing;

Determining whether the balance deviation value satisfies a preset condition, where the preset condition includes an equalization deviation value of the equalization unit that needs to perform discharge equalization is less than a back difference value; and an equalization deviation value of the equalization unit that needs to perform charge equalization is greater than a hysteresis Value

If not, the equalization parameter is re-acquired according to the equalization deviation value, and the step of equalizing the equalization unit according to the equalization parameter is performed again.

[Claim 10] The battery pack online equalization system according to claim 6 or 9, wherein the equalization parameter module is configured to:

When the deviation value is greater than zero and less than the preset minimum positive value 吋, the equalization parameter includes a third discharge current, a third discharge time, a third discharge waiting time, and the third discharge current is 1/20 of the first discharge current, 1/2 between the first discharge turns, and 3 times the third discharge wait time between the first discharge waits ; When the deviation value is less than a preset minimum negative value, the equalization parameter includes a first charging current, a first charging time, and a first charging waiting time;

When the deviation value is greater than a preset minimum negative value and less than the preset maximum negative value 吋, the equalization parameter includes a second charging current, a second charging interval, a second charging waiting time, and the second The charging current is 1/5 of the first charging current, the second charging time is equal to the first charging time, and the second charging waiting time is 2 of the first charging waiting time Times