CN118953034A - Battery pack power supply system and battery pack power supply processing method - Google Patents
Battery pack power supply system and battery pack power supply processing method Download PDFInfo
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- CN118953034A CN118953034A CN202411154863.4A CN202411154863A CN118953034A CN 118953034 A CN118953034 A CN 118953034A CN 202411154863 A CN202411154863 A CN 202411154863A CN 118953034 A CN118953034 A CN 118953034A
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- battery pack
- battery
- controllable switch
- power supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本申请提供一种电池包供电系统以及电池包供电处理方法，属于电动汽车技术领域。该系统包括：母线、多个电池包、数据总线、检测控制终端以及车载蓄电池，各电池包包括：电池组、电池信息采集单元、电池管理单元以及开关单元，各电池包的电池组经由开关单元与母线连接，各电池包的电池组经由开关单元与相邻电池包的电池组连接，电池管理单元的输出端与开关单元中各可控开关的控制端连接，电池管理单元通过控制开关单元中各可控开关的通断，以调节电池包与相邻电池包之间的连接方式以及电池包与母线之间的连接方式。本申请可以达到灵活调节电池包之间的连接方式以适应车辆的多种预设供电需求，及时剔除故障电池包以提升车辆的安全性与可靠性的效果。
The present application provides a battery pack power supply system and a battery pack power supply processing method, which belong to the field of electric vehicle technology. The system includes: a busbar, multiple battery packs, a data bus, a detection control terminal and an on-board battery. Each battery pack includes: a battery pack, a battery information acquisition unit, a battery management unit and a switch unit. The battery pack of each battery pack is connected to the busbar via the switch unit, and the battery pack of each battery pack is connected to the battery pack of the adjacent battery pack via the switch unit. The output end of the battery management unit is connected to the control end of each controllable switch in the switch unit. The battery management unit adjusts the connection mode between the battery pack and the adjacent battery pack and the connection mode between the battery pack and the busbar by controlling the on and off of each controllable switch in the switch unit. The present application can achieve the effect of flexibly adjusting the connection mode between battery packs to adapt to the various preset power supply requirements of the vehicle, and timely eliminating faulty battery packs to improve the safety and reliability of the vehicle.
Description
Technical Field
The application relates to the technical field of electric automobiles, in particular to a battery pack power supply system and a battery pack power supply processing method.
Background
With the vigorous development of new energy automobile markets, a vehicle-mounted battery system of the new energy automobile is also attracting attention, and the performance of the vehicle-mounted battery system serving as a core electric energy source of the new energy automobile seriously influences the endurance of the new energy automobile. When the vehicle-mounted battery system is composed of a plurality of battery packs, each battery pack can be connected in parallel, in series or in series-parallel to meet the preset power supply requirement or charging capacity of the new energy automobile. However, due to the difference of the manufacturing process of the battery pack and the difference of the application environments of the battery pack, the performance of the battery pack is commensurable, and in some extreme environments, the battery pack is easy to damage. Therefore, there is a need for a vehicle battery system that eliminates damaged battery packs in a timely manner.
In the related art, the connection relationship of the battery packs in the vehicle-mounted battery system is a fixed structure, for example, the connection structure of each battery pack in the vehicle-mounted battery system is a series combination, or the connection structure of the battery packs in the vehicle-mounted battery system is a parallel combination, or the connection structure of the battery packs in the vehicle-mounted battery system is a combination of series connection and parallel connection, and the preset power supply requirement of the automobile is met through the fixed structure of the battery packs in the vehicle-mounted battery system.
However, when the fixing structure of the battery pack in the related art is applied to the vehicle-mounted battery system, there is a problem that the vehicle-mounted battery system cannot flexibly adjust the capacity and configuration of each battery pack, thereby limiting the endurance mileage of the vehicle. Meanwhile, the vehicle-mounted battery system cannot find out a faulty battery pack in time, so that the vehicle-mounted battery system has the problems of safety and reliability.
Disclosure of Invention
The application aims to provide a battery pack power supply system and a battery pack power supply processing method, which can achieve the effects of flexibly adjusting the connection mode between battery packs to adapt to various preset power supply requirements of a vehicle and timely eliminating a fault battery pack to improve the safety and reliability of the vehicle.
Embodiments of the present application are implemented as follows:
In a first aspect of an embodiment of the present application, there is provided a battery pack power supply system including: the system comprises a bus, a plurality of battery packs, a data bus, a detection control terminal and a vehicle-mounted storage battery;
each battery pack includes: the battery pack comprises battery packs, battery information acquisition units, battery management units and switch units, wherein each battery pack is connected with the battery packs of adjacent battery packs through the switch units, the battery information acquisition units are respectively connected with the battery packs and the battery management units in a communication manner, and the battery management units are connected with the switch units;
The group battery is connected with the generating line via switch unit, and battery management unit passes through data bus and detects control terminal to be connected, and the battery management unit of each battery package still is connected with the battery management unit of adjacent battery package, and the battery management unit control switch unit's break-make is in order to adjust the connected mode between battery package and the adjacent battery package and the connected mode between battery package and the generating line for the output voltage of battery package power supply system reaches the power supply demand of predetermineeing, and wherein, the electric connected mode between battery package and the adjacent battery package includes: series connection, parallel connection, and hybrid connection, the hybrid connection including: the battery pack is connected with the bus in series and in parallel, and the connection mode between the battery pack and the bus is used for indicating whether the battery pack is connected with a power supply branch of a battery pack power supply system or not;
The vehicle-mounted storage battery is connected with battery management units in a plurality of battery packs.
As a possible implementation manner, the switching unit includes: first controllable switch, second controllable switch, third controllable switch and fourth controllable switch, the generating line includes: positive and negative bus bars;
the control end of the first controllable switch, the control end of the second controllable switch, the control end of the third controllable switch and the control end of the fourth controllable switch are all connected with the output end of the battery management unit;
the input end of the first controllable switch and the input end of the second controllable switch are connected with the negative electrode of the battery pack, the input end of the third controllable switch and the input end of the fourth controllable switch are connected with the negative electrode of the battery pack, the output end of the first controllable switch is connected with the negative bus, and the output end of the third controllable switch is connected with the positive bus;
the output end of the second controllable switch and the output end of the fourth controllable switch are connected with the cathodes of the battery packs in the adjacent battery packs.
In a second aspect of the embodiment of the present application, a battery pack power supply processing method is provided, where the battery pack power supply processing method is applied to the battery pack power supply system described in the first aspect, and the battery pack power supply processing method includes:
The detection control terminal detects the preset power supply requirement of the vehicle and the working state of each battery pack in real time, and determines at least one normal battery pack according to the working state of each battery pack;
The detection control terminal determines target operation parameter information of each normal battery pack in real time according to the working state of each normal battery pack and the preset power supply requirement, wherein the target operation parameter information is used for indicating the current working voltage of the normal battery pack;
the battery management unit controls the on-off of each controllable switch in the switch unit according to the target operation parameter information so as to adjust the connection mode between the battery pack and the adjacent battery pack and the connection mode between the battery pack and the bus, and the output voltage of the battery pack power supply system reaches the preset power supply requirement of the vehicle.
As a possible implementation manner, the detection control terminal detects a preset power supply requirement of the vehicle and a working state of each battery pack in real time, and determines at least one normal battery pack according to the working state of each battery pack, including:
The battery information acquisition unit acquires the working parameter information of the battery pack in real time and sends the working parameter information to the battery management unit, wherein the working parameter information comprises: operating voltage and operating temperature;
The battery management unit determines the working state of the battery pack according to the working parameter information and sends the working state of the battery pack to the detection control terminal through the data bus;
and the detection control terminal determines at least one normal battery pack according to the working state of each battery pack.
As one possible implementation manner, the battery management unit controls on-off of each controllable switch in the switch unit according to the target operation parameter information to adjust a connection manner between the battery pack and an adjacent battery pack and a connection manner between the battery pack and the bus, and includes:
If the battery management unit determines that the connection mode between the battery pack where the battery management unit is positioned and the adjacent battery packs of the battery packs is serial connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the fourth controllable switch of the initial battery pack to be on, the second controllable switch and the third controllable switch to be off, and controls the tail battery pack and the fourth controllable switch of the middle battery pack to be on, and the first controllable switch, the second controllable switch and the third controllable switch to be off, so that the middle battery pack is disconnected from the positive bus and the negative bus, the initial battery pack is connected with the negative bus, and the tail battery pack is connected with the positive bus;
If the battery management unit determines that the connection mode between the battery pack where the battery management unit is positioned and the adjacent battery packs of the battery packs is parallel connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the third controllable switch of the battery packs to be conducted, and controls the second controllable switch and the fourth controllable switch of the battery packs to be disconnected, so that each battery pack is connected with the positive bus and the negative bus;
If the battery management unit determines that the connection mode between the battery pack where the battery management unit is located and the adjacent battery packs of the battery packs is hybrid connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the fourth controllable switch of the initial battery pack and the second controllable switch and the third controllable switch of the battery packs connected in series to be switched on, controls the fourth controllable switch of the tail battery pack and the middle battery pack in the battery packs connected in series to be switched on, controls the first controllable switch, the second controllable switch and the third controllable switch of each battery pack in the battery packs connected in parallel to be switched off, and controls the first controllable switch and the third controllable switch of each battery pack connected in parallel to be switched on and controls the second controllable switch and the fourth controllable switch of each battery pack to be switched off.
As a possible implementation manner, the battery pack power supply processing method further includes:
The battery management unit acquires target operation parameter information of a battery pack where the battery management unit is located through a data bus and the working state of an adjacent battery pack;
The battery management unit determines whether the adjacent battery pack is a normal battery pack according to the running state of the adjacent battery pack, and controls the on-off of each controllable switch in the switch unit according to the target running parameter information so as to adjust the connection mode between the normal battery pack and the adjacent battery pack.
As one possible implementation manner, the battery management unit controls on-off of each controllable switch in the switch unit according to the target operation parameter information to adjust a connection manner between a normal battery pack and an adjacent battery pack, and includes:
if not, the battery management unit acquires the running state of the next adjacent battery pack until the next adjacent battery pack is determined to be a normal battery pack, and controls the on-off of each controllable switch in the switch unit according to the target running parameter information so as to adjust the connection mode between the normal battery pack and the next adjacent battery pack, and the battery management unit of the adjacent battery pack controls the on-off of each controllable switch in the switch unit of the adjacent battery pack according to the connection mode between the normal battery pack and the next adjacent battery pack so as to eliminate the adjacent battery pack.
As one possible implementation manner, the battery management unit of the adjacent battery pack controls on/off of each controllable switch in the switch unit of the adjacent battery pack according to a connection manner between the normal battery pack and the next adjacent battery pack to reject the adjacent battery pack, including:
If the connection mode between the normal battery pack and the next adjacent battery pack is serial connection, the battery management unit of the adjacent battery pack controls the second controllable switch in the switch unit of the adjacent battery pack to be on, and controls the first controllable switch, the third controllable switch and the fourth controllable switch to be off;
if the connection mode between the normal battery pack and the next adjacent battery pack is parallel connection, the battery management unit of the adjacent battery pack controls the first controllable switch, the second controllable switch, the third controllable switch and the fourth controllable switch in the switch units of the adjacent battery packs to be disconnected.
As a possible implementation manner, the battery pack power supply processing method further includes:
Before the battery pack power supply system is started, the vehicle-mounted storage battery supplies power for the battery management units of the battery packs, and starts with the battery management unit of the first battery pack in the battery packs, and the battery management units of the battery packs supply power to the battery management units of the adjacent battery packs in sequence.
As a possible implementation manner, after the battery management unit of each battery pack supplies power to the battery management unit of an adjacent battery pack, the method includes:
The battery management unit of each battery pack transmits power supply information to the detection control terminal via the data bus, the power supply information including: power supply time and power supply state;
the detection control terminal determines the power supply sequence of each battery pack according to the power supply time in the power supply information of each battery pack;
The detection control terminal determines the fault battery pack according to the power supply sequence of each battery pack and the power supply state in the power supply information of each battery pack.
In a third aspect of the embodiment of the present application, a vehicle is provided, where the battery pack power supply system described in the first aspect is disposed.
The beneficial effects of the embodiment of the application include:
The battery pack power supply system provided by the embodiment of the application is formed by a bus, a plurality of battery packs, a data bus, a detection control terminal and a vehicle-mounted storage battery, wherein each battery pack comprises: the battery pack, the battery information acquisition unit, the battery management unit and the switch unit; the battery information acquisition units of the battery packs are in communication connection with the battery packs of the battery packs, the battery information acquisition units of the battery packs are also connected with the battery management units, the battery management units of the battery packs are connected with the detection control terminal through the data bus, the battery information acquisition units are used for acquiring actual parameter information of the battery packs, the detection control terminal is used for acquiring preset power supply requirements, and the battery management units are used for transmitting the actual parameter information of the battery packs to the detection control terminal; the battery pack of each battery pack is connected with the bus through a controllable switch in the switch unit, the battery pack of each battery pack is connected with the battery pack of the adjacent battery pack through a controllable switch in the switch unit, the output end of the battery management unit is connected with the control end of each controllable switch in the switch unit, and the battery management unit controls the on-off of each controllable switch in the switch unit based on an instruction issued by the detection control terminal so as to adjust the connection mode between each battery pack and the adjacent battery pack and the connection mode between each battery pack and the bus; the vehicle-mounted storage battery is connected with battery management units in a plurality of battery packs. The connection mode between the battery pack and the adjacent battery pack comprises the following steps: the battery pack power supply system comprises a battery pack power supply system, a bus, a series connection, a parallel connection and a hybrid connection, wherein the hybrid connection means that the series connection and the parallel connection coexist, and the connection mode between the battery pack and the bus is used for indicating whether the battery pack is connected into a power supply branch of the battery pack power supply system. Therefore, the effect of flexibly adjusting the connection mode between the battery packs to adapt to various preset power supply requirements of the vehicle and eliminating the fault battery packs in time so as to improve the safety and reliability of the vehicle can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a battery pack power supply system according to an embodiment of the present application;
Fig. 2 is a flowchart of a first battery pack power supply processing method according to an embodiment of the present application;
fig. 3 is a flowchart of a second battery pack power supply processing method according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of a series connection of battery packs according to an embodiment of the present application;
Fig. 5 is a schematic structural diagram of a parallel connection of battery packs according to an embodiment of the present application;
Fig. 6 is a schematic structural diagram of a hybrid connection of a battery pack according to an embodiment of the present application;
Fig. 7 is a flowchart of a third battery pack power supply processing method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of removing adjacent battery packs according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of another embodiment of the present application for rejecting adjacent battery packs;
fig. 10 is a flowchart of a fourth battery pack power supply processing method according to an embodiment of the present application;
Fig. 11 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Description of the drawings: 10: a battery pack power supply system; 101: a bus; 102: a battery pack; 1021: a battery pack; 1022: a battery management unit; 1023: a switching unit; 10231: a first controllable switch; 10232: a second controllable switch; 10233: a third controllable switch; 10234: a fourth controllable switch; 1024: a battery information acquisition unit; 103: a data bus; 104: detecting a control terminal; 105: a vehicle-mounted storage battery; 20: a vehicle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
At present, the connection relation between each battery pack in the vehicle-mounted battery system is a fixed structure, namely, the connection structure of each battery pack in the vehicle-mounted battery system is a series combination, or the connection structure of the battery packs in the vehicle-mounted battery system is a parallel combination, or the connection structure of the battery packs in the vehicle-mounted battery system is a combination of series connection and parallel connection, and the preset power supply requirement of an automobile is met through the fixed structure of the battery packs in the vehicle-mounted battery system. However, the scheme realizes the preset power supply requirement of the vehicle through the fixed structure, and the capacity and configuration of each battery pack cannot be flexibly adjusted by the vehicle-mounted battery system, so that the endurance mileage of the vehicle is limited. In addition, the vehicle-mounted battery system cannot find out the faulty battery pack in time, so that the vehicle-mounted battery system has the problems of safety and reliability.
To this end, an embodiment of the present application provides a battery pack power supply system including: generating line, a plurality of battery package, data bus, detection control terminal and on-vehicle battery, wherein, each battery package includes: the battery pack, the battery management unit, the battery information acquisition unit and the switch unit, wherein the switch unit comprises a plurality of controllable switches. The battery packs of each battery pack are connected with the bus through the switch unit, the battery packs of each battery pack are connected with the battery packs of the adjacent battery packs through the switch unit, the output end of the battery management unit is connected with the control end of each controllable switch in the switch unit, and the battery management unit is used for adjusting the connection mode between the battery pack and the adjacent battery pack and the connection mode between the battery pack and the bus through controlling the on-off of each controllable switch in the switch unit, so that the output voltage of the battery pack power supply system reaches the preset power supply requirement of the vehicle. Therefore, the effect of flexibly adjusting the connection mode between the battery packs to adapt to various preset power supply requirements of the vehicle and eliminating the fault battery packs in time so as to improve the safety and reliability of the vehicle can be achieved.
The battery pack power supply system and the vehicle provided by the embodiment of the application are explained in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a battery pack power supply system according to the present application, referring to fig. 1, the battery pack power supply system 10 includes: bus 101, a plurality of battery packs 102, data bus 103, and detection control terminal 104. Wherein each battery pack 102 includes: a battery pack 1021, a battery management unit 1022, a switching unit 1023, and a battery information acquisition unit 1024.
Each battery 1021 is connected to the battery 1021 of an adjacent battery pack 102 via a switch unit 1023, a battery information acquisition unit 1024 is communicatively connected to each battery 1021 and a battery management unit 1022, and the battery management unit 1022 is connected to the switch unit 1023.
Alternatively, the bus bar 101 is connected to a power supply port of the vehicle, which supplies power to the vehicle. If a power supply circuit or a closed loop is formed between the battery pack 102 and the bus bar 101, the battery pack 102 is added to a power supply branch of the vehicle; otherwise, the battery pack 102 exits the power supply branch of the vehicle.
Optionally, the detection control terminal 104 is in communication connection with a power supply port of the vehicle or a vehicle controller of the vehicle, and the detection control terminal 104 receives a preset power supply requirement of the vehicle in real time. The detection control terminal 104 is connected with the battery management units 1022 of the battery packs 102 through the data bus 103, the detection control terminal 104 acquires the working states of the battery packs 102 where the battery management units 1022 are located in real time through the data bus 103, and sends target operation parameter information to the battery management units 1022 of the battery packs 102 according to the real-time preset power supply requirements of the vehicle and the working states of the battery packs 102, and the battery management units 1022 of the battery packs 102 control the on-off of the controllable switches in the switch units 1023 according to the target operation parameter information issued by the detection control terminal 104 so as to adjust the connection mode between each battery pack 102 and the battery packs 102 adjacent to the battery packs 102 at a distance of the battery packs 102, and also adjust the connection or disconnection between each battery pack 102 and the bus 101, so that the output voltage of the battery pack power supply system 10 meets the current power supply requirements of the vehicle.
The battery pack 1021 is connected with the bus 101 via the switch unit 1023, the battery management unit 1022 is connected with the detection control terminal 104 through the data bus 103, the battery management unit 1022 of each battery pack 102 is further connected with the battery management unit 1022 of the adjacent battery pack 102, the battery management unit 1022 controls the on-off of the switch unit 1023 to adjust the connection mode between the battery pack 102 and the adjacent battery pack 102 and the connection mode between the battery pack 102 and the bus 101, so that the output voltage of the battery pack power supply system 10 reaches the preset power supply requirement, wherein the electrical connection mode between the battery pack 102 and the adjacent battery pack 102 comprises: series connection, parallel connection, and hybrid connection, the hybrid connection including: the connection between the battery pack 102 and the bus bar 101 is used to indicate whether the battery pack is connected to the power supply branch of the battery pack power supply system 10.
Optionally, the battery pack 102 is configured to supply power to a power supply branch of the vehicle, and the battery pack 102 includes: a battery pack 1021, a battery management unit 1022, and a switching unit 1023, the switching unit 1023 being implemented by a plurality of controllable switches. The battery 1021 in the battery pack 102 is connected to the bus bar and the battery 1021 of the adjacent battery pack 102 via each controllable switch in the switch unit 1023, and the output terminal of the battery management unit 1022 in each battery pack 102 is connected to the control terminal of each controllable switch in the switch unit 1023. The battery management unit 1022 and the detection control terminal 104 perform data transmission via the data bus 103, and the battery management unit 1022 obtains the target operation parameter information sent by the detection control terminal 104 via the data bus, controls on/off of each controllable switch in the switch unit 1023 according to the indication of the target operation parameter information, and adjusts the connection mode of the battery 1021 in the battery pack 102 and the bus 101 and the connection mode of the battery 1021 in the battery pack 102 and the battery 1021 in the adjacent battery pack 102.
Optionally, the connection manner of the battery pack in the battery pack and the battery pack in the adjacent battery pack includes: series connection, parallel connection, and hybrid connection. The series connection is used for indicating that the battery packs in each battery pack added into the power supply branch of the vehicle are in a series connection structure, a closed loop is formed between the whole series connection structure of the battery packs in each battery pack and the bus, only the initial battery pack and the tail battery pack in the series connection structure are directly connected with the bus, and the middle battery pack in the series connection structure is not directly connected with the bus, but is connected into the power supply branch of the vehicle through the handle series connection structure of the battery packs in the adjacent battery packs; the parallel connection is used for indicating that the battery packs in the battery packs added into the power supply branch of the vehicle are in a parallel connection structure, a closed loop is formed between the battery packs in the battery packs and the bus, and the battery packs in all the battery packs in the parallel connection structure are directly connected with the bus; the hybrid connection is used for indicating that a series connection structure exists between battery packs in battery packs added into a power supply branch of a vehicle, and a parallel connection structure exists between the battery packs, wherein the battery packs in the battery packs contained in the series connection structure integrally form a closed loop with a bus in the mode of series connection, and the battery packs in the battery packs contained in the parallel connection structure individually form a closed loop with the bus in the mode of parallel connection.
Optionally, a connection manner between the battery pack and the bus bar in the battery pack is used for indicating whether the battery pack is added to the power supply branch of the vehicle. The battery pack in the battery pack forms a closed loop with the bus through the whole series connection structure, or the battery pack in the battery pack forms a closed loop with the bus through the parallel connection structure alone, which indicates that the battery pack is added into a power supply branch of a vehicle. On the contrary, when the battery pack in a certain battery pack in the battery pack power supply system is not connected with the battery pack in an adjacent battery pack or the bus, namely the battery pack in the battery pack and the battery pack in the adjacent battery pack form a closed loop together with the bus, and the battery pack in the battery pack and the bus form a closed loop independently, the battery pack is not added into a power supply branch of the vehicle.
It is worth to say that whether the battery pack is added into the power supply branch of the vehicle is not based on whether the battery pack of the battery pack is directly connected with the bus bar, but rather whether the battery pack of the battery pack and the bus bar form a closed loop in an integral or individual mode.
As an alternative implementation, referring to fig. 1, the battery pack 102 provided in the embodiment of the present application further includes a battery information collecting unit 1024, where the battery information collecting unit 1024 is communicatively connected to the battery pack 1021, and the battery information collecting unit 1024 is also communicatively connected to the battery management unit 1022.
As an alternative implementation, referring to fig. 1, a switching unit 1023 provided in an embodiment of the present application includes: the bus 101 in the battery pack power supply system 10 includes a positive bus and a negative bus, a first controllable switch 10231, a second controllable switch 10232, a third controllable switch 10233, and a fourth controllable switch 10234.
The control terminal of the first controllable switch 10231, the control terminal of the second controllable switch 10232, the control terminal of the third controllable switch 10233, and the control terminal of the fourth controllable switch 10234 are all connected to the output terminal of the battery management unit 1022.
Optionally, the battery management unit 1022 modulates the control signals applied by the control terminal of the first controllable switch 10231, the control terminal of the second controllable switch 10232, the control terminal of the third controllable switch 10233, and the control terminal of the fourth controllable switch 10234 according to the target operation parameter information, so as to control the on-off of the first controllable switch 10231, the second controllable switch 10232, the third controllable switch 10233, and the fourth controllable switch 10234.
The input end of the first controllable switch 10231 and the input end of the second controllable switch 10232 are connected with the negative electrode of the battery 1021, the input end of the third controllable switch 10233 and the input end of the fourth controllable switch 10234 are connected with the negative electrode of the battery 1021, the output end of the first controllable switch 10231 is connected with the negative bus, and the output end of the third controllable switch 10233 is connected with the positive bus.
Optionally, the conduction of the first controllable switch 10231 is used to connect the battery pack 102 where the first controllable switch 10231 is located with the negative bus, and the conduction of the third controllable switch 10233 is used to connect the battery pack 102 where the first controllable switch 10231 is located with the positive bus. If the first controllable switch 10231 is turned on and the third controllable switch 10233 is also turned on, a closed loop is formed between the battery pack and the bus separately, and the battery pack is connected in parallel in a charging branch of the vehicle; if the first controllable switch 10231 is turned off and the third controllable switch 10233 is also turned off, but only the fourth controllable switch 10234 is turned off, the battery pack may be an end battery pack or a middle battery pack in the series connection structure, and when the output end of the fourth controllable switch 10234 is connected with the positive bus, the battery pack is an end battery pack in the series connection structure; if the first controllable switch 10231 is turned on and the fourth controllable switch 10234 is also turned on, but the third controllable switch 10233 is turned off, the battery pack is connected to the negative bus, and the battery pack is the initial battery pack in the series connection structure.
The output of the second controllable switch 10232 and the output of the fourth controllable switch 10234 are both connected to the negative electrode of the battery 1021 in the adjacent battery pack.
Optionally, the second controllable switch 10232 is turned on to implement rejection of the battery pack 102 where the second controllable switch 10232 is located out of the charging branch of the vehicle, i.e. the battery pack 102 where the second controllable switch 10232 is located does not participate in the charging process of the vehicle, and the second controllable switch 10232 is also referred to as a rejection switch.
Optionally, the conduction of the fourth controllable switch 10234 is used to connect the battery pack 102 where the fourth controllable switch 10234 is located in series with the battery pack adjacent to the battery pack, that is, the battery pack 102 where the fourth controllable switch 10234 is located is connected in series to the charging branch of the vehicle, and the fourth controllable switch 10234 is also called a series switch.
As an alternative implementation, referring to fig. 1, the battery pack power supply system provided in the embodiment of the present application further includes a vehicle-mounted storage battery 105, where the vehicle-mounted storage battery 105 is connected to the battery management units 1022 in the plurality of battery packs 102.
In the embodiment of the application, a battery pack power supply system is formed by a bus, a plurality of battery packs, a data bus, a detection control terminal and a vehicle-mounted storage battery, wherein each battery pack comprises: the battery pack, the battery information acquisition unit, the battery management unit and the switch unit; the battery information acquisition units of the battery packs are in communication connection with the battery packs of the battery packs, the battery information acquisition units of the battery packs are also connected with the battery management units, the battery management units of the battery packs are connected with the detection control terminal through the data bus, the battery information acquisition units are used for acquiring actual parameter information of the battery packs, the detection control terminal is used for acquiring preset power supply requirements, and the battery management units are used for transmitting the actual parameter information of the battery packs to the detection control terminal; the battery pack of each battery pack is connected with the bus through a controllable switch in the switch unit, the battery pack of each battery pack is connected with the battery pack of the adjacent battery pack through a controllable switch in the switch unit, the output end of the battery management unit is connected with the control end of each controllable switch in the switch unit, and the battery management unit controls the on-off of each controllable switch in the switch unit based on an instruction issued by the detection control terminal so as to adjust the connection mode between each battery pack and the adjacent battery pack and the connection mode between each battery pack and the bus; the vehicle-mounted storage battery is connected with battery management units in a plurality of battery packs. The connection mode between the battery pack and the adjacent battery pack comprises the following steps: the battery pack power supply system comprises a battery pack power supply system, a bus, a series connection, a parallel connection and a hybrid connection, wherein the hybrid connection means that the series connection and the parallel connection coexist, and the connection mode between the battery pack and the bus is used for indicating whether the battery pack is connected into a power supply branch of the battery pack power supply system. Therefore, the effect of flexibly adjusting the connection mode between the battery packs to adapt to various preset power supply requirements of the vehicle and eliminating the fault battery packs in time so as to improve the safety and reliability of the vehicle can be achieved.
Fig. 2 is a flowchart of a battery pack power supply processing method according to the present application, which is applied to the battery pack power supply system 10 shown in fig. 1. Referring to fig. 2, an embodiment of the present application provides a battery pack power supply processing method, including:
Step 1: the battery management unit of each battery pack is connected with the detection control terminal through the data bus, the detection control terminal detects the preset power supply requirement of the vehicle and the working state of each battery pack in real time, and at least one normal battery pack is determined according to the working state of each battery pack.
Optionally, the detection control terminal detects a preset power supply requirement of the vehicle in real time from a power supply port of the vehicle or the whole vehicle controller, and the preset power supply requirement of the vehicle is used for indicating the charging power or the charging voltage currently required by the vehicle.
Optionally, the detecting control terminal obtains the working state of each battery pack in real time from the battery management module of the battery pack via the data bus, where the working state of the battery pack includes: normal operation and abnormal operation; the operating state of the battery pack is determined based on operating parameter information of the battery pack, which includes an operating voltage of the battery pack, an operating power of the battery pack, an operating temperature of the battery pack, and the like. And the detection control terminal determines whether the battery pack is a normal battery pack according to the working state of the battery pack, wherein the normal battery pack refers to the battery pack with the working parameter information indicated by the working state in a normal operation range, and if the working parameter information indicated by the working state of the battery pack exceeds the normal operation range, the battery pack is a fault battery pack.
Optionally, the detection control terminal rejects the fault battery packs according to the working state of each battery pack, and only controls the connection mode between the battery packs of each normal battery pack and the bus, so that the bus output of the battery pack power supply system meets the real-time preset power supply requirement of the vehicle.
Step 2: and the detection control terminal determines the target operation parameter information of each normal battery pack in real time according to the working state of each normal battery pack and the preset power supply requirement, wherein the target operation parameter information is used for indicating the current working voltage of the normal battery pack.
Optionally, the detection control terminal determines the target operation parameter information of each normal battery pack in real time only according to the working state of the normal battery pack and the real-time preset power supply requirement of the vehicle, wherein the target operation parameter information of each normal battery pack is used for indicating the current working voltage of the battery pack in each normal battery pack. The current operating voltage is used to indicate the voltage that the battery pack in the battery pack currently needs to output.
Step 3: the battery management unit controls the on-off of each controllable switch in the switch unit according to the target operation parameter information so as to adjust the connection mode between the battery pack and the adjacent battery pack and the connection mode between the battery pack and the bus, and the output voltage of the battery pack power supply system reaches the preset power supply requirement of the vehicle.
Optionally, the battery packs in each battery pack are connected to the bus bar and the battery packs in adjacent battery packs via controllable switches in the switch unit, respectively, and the adjacent battery packs are used for indicating the battery packs adjacent to the arrangement position space position of each battery pack.
Optionally, the battery management unit in the battery pack may determine a connection mode of the battery pack in the battery pack and the battery pack in the adjacent battery pack according to the current operating voltage of the battery pack in the battery pack indicated by the received target operating parameter information, and may also determine the connection or disconnection of the battery pack in the battery pack and the bus.
Optionally, the battery management unit in the battery pack generates a plurality of control signals according to the received target operation parameter information, and controls on-off of each controllable switch in the switch unit in the battery pack based on the control signals, so as to adjust the connection mode of the battery pack in the battery pack and the battery pack in the adjacent battery pack, and also is used for adjusting the connection mode between the battery pack in the battery pack and the bus.
In the embodiment of the application, the preset power supply requirement of the vehicle is detected in real time through the detection control terminal, the working state of each battery pack in the battery pack power supply system is detected in real time through the data bus, and at least one normal battery pack contained in the battery pack power supply system is determined; the method comprises the steps that a detection control terminal determines connection modes of a battery pack in each battery pack, a battery pack in an adjacent battery pack and a bus in a battery pack power supply system according to working operation parameter information indicated by a working state of a normal battery pack and real-time preset power supply requirements of a vehicle, and outputs target operation parameter information corresponding to each battery pack to a battery management unit of each battery pack, wherein the target operation parameter information is used for indicating current operation voltage of the battery pack in each battery pack; the battery management unit of each battery pack controls the on-off of each controllable switch in the switch unit based on the received target operation parameter information so as to adjust the connection mode between the battery pack in each battery pack and the battery pack in the adjacent battery pack and the connection mode between the battery pack in each battery pack and the bus, and the voltage output by the battery pack power supply system meets the real-time preset power supply requirement of the vehicle. The detection control terminal acquires the working state of each normal battery pack and the preset power supply requirement of the vehicle in real time, calculates the target operation parameter information of the battery packs in each normal battery pack in the battery pack power supply system in real time, and the battery management unit in each normal battery pack adjusts the on-off state of each controllable switch in the switch unit in real time according to the target operation parameter information received in real time, so as to flexibly adjust the connection modes between the battery packs of each battery pack and the battery packs and buses of the adjacent battery packs. Therefore, the effect of flexibly adjusting the connection mode between the battery packs to adapt to various preset power supply requirements of the vehicle and eliminating the fault battery packs in time so as to improve the safety and reliability of the vehicle can be achieved.
As an alternative embodiment, referring to fig. 3, the step 1 may specifically be:
Step 1.1: the battery information acquisition unit acquires the working parameter information of the battery pack in real time and sends the working parameter information to the battery management unit, wherein the working parameter information comprises: operating voltage and operating temperature.
Optionally, the battery information acquisition unit acquires the working parameter information of the battery pack in real time based on internet communication, where the working parameter information includes: operating voltage and operating temperature. The working voltage is used for indicating the voltage of the current operation of the battery pack in the battery pack, and the working temperature is used for indicating the temperature generated by the current operation of the battery pack in the battery pack.
Step 1.2: the battery management unit determines the working state of the battery pack according to the working parameter information, and sends the working state of the battery pack to the detection control terminal through the data bus.
Optionally, the battery management unit judges the working state of the battery pack in real time according to the working parameter information of the battery pack in the battery pack. If the working voltage of the battery pack in the battery pack exceeds the normal working voltage range, the working state of the battery pack is still in an abnormal state even if the working temperature of the battery pack in the battery pack is operated in the normal working temperature range; if the working voltage of the battery pack in the battery pack is within the normal working voltage range, but the working temperature of the battery pack in the battery pack exceeds the normal working temperature range, the working state of the battery pack is also an abnormal state; if the working voltage of the battery pack in the battery pack exceeds the normal working voltage range and the working temperature of the battery pack in the battery pack exceeds the normal working temperature range, the working state of the battery pack is also an abnormal state; if the working voltage of the battery pack in the battery pack is in the normal working voltage range and the working temperature of the battery pack in the battery pack is also in the normal working temperature range, the working state of the battery pack is a normal running state.
It should be noted that, the working state of the battery pack is not limited to the working state of the battery pack, and the working state of the battery management unit in the battery pack, the working state of each controllable switch in the switch unit, and the working state of the battery information acquisition unit are all affected, which is not limited in the application.
Step 1.3: and the detection control terminal determines at least one normal battery pack according to the working state of each battery pack.
Optionally, the detection control terminal determines at least one normal battery pack according to the working state of each battery pack, where the normal battery pack is used to indicate the battery pack to normally operate, the battery management unit to normally operate, each controllable switch in the switch unit to normally operate, and the battery information acquisition unit to normally operate.
As an alternative embodiment, fig. 4 is a schematic structural diagram of a series connection of battery packs provided by the present application, and referring to fig. 4, a series connection structure of battery packs provided by an embodiment of the present application is as follows:
Step 3.1: if the battery management unit determines that the connection mode between the battery pack where the battery management unit is located and the adjacent battery packs of the battery packs is serial connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the fourth controllable switch of the initial battery pack to be on, the second controllable switch and the third controllable switch to be off, and controls the tail battery pack and the fourth controllable switch of the middle battery pack to be on, and the first controllable switch, the second controllable switch and the third controllable switch to be off, so that the middle battery pack is disconnected from the positive bus and the negative bus, the initial battery pack is connected with the negative bus, and the tail battery pack is connected with the positive bus.
Optionally, when the initial battery pack is used for indicating that the connection mode between the normal battery packs in the battery pack power supply system is serial connection, the first controllable switch is directly connected with the battery pack with the negative bus; the terminal battery pack is used for indicating that the battery packs are directly connected with the positive bus when the connection mode between the normal battery packs in the battery pack power supply system is serial connection; and the middle battery pack is used for indicating that the battery packs in the battery pack power supply system are connected in series, and the fourth controllable switch is connected with the negative electrode of the battery pack in the adjacent battery pack.
Optionally, when the connection mode between the normal battery packs in the battery pack power supply system is serial connection, the first controllable switch and the fourth controllable switch of the initial battery pack are turned on, and the second controllable switch and the fourth controllable switch are turned off; the middle battery pack and the tail battery pack are only conducted by the fourth controllable switch, but the fourth controllable switch of the middle battery pack is connected with the battery pack in the adjacent battery pack, and the fourth controllable switch of the tail battery pack is directly connected with the negative bus.
As an alternative embodiment, fig. 5 is a schematic structural diagram of a parallel connection of battery packs provided by the present application, and referring to fig. 5, a parallel connection structure of battery packs provided by an embodiment of the present application is as follows:
Step 3.2: if the battery management unit determines that the connection mode between the battery pack where the battery management unit is located and the adjacent battery packs of the battery packs is parallel connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the third controllable switch of the battery packs to be on, and controls the second controllable switch and the fourth controllable switch of the battery packs to be off, so that each battery pack is connected with the positive bus and the negative bus.
As an alternative embodiment, fig. 6 is a schematic structural diagram of a hybrid battery pack connection provided by the present application, and referring to fig. 6, the structure of a hybrid battery pack connection provided by the embodiment of the present application is as follows:
Step 3.3: if the battery management unit determines that the connection mode between the battery pack where the battery management unit is located and the adjacent battery packs of the battery packs is hybrid connection according to the target operation parameter information, the battery management unit controls the first controllable switch and the fourth controllable switch of the initial battery pack and the second controllable switch and the third controllable switch of the battery packs connected in series to be switched on, controls the fourth controllable switch of the tail battery pack and the middle battery pack in the battery packs connected in series to be switched on, controls the first controllable switch, the second controllable switch and the third controllable switch of each battery pack in the battery packs connected in parallel to be switched off, and controls the first controllable switch and the third controllable switch of each battery pack connected in parallel to be switched on and controls the second controllable switch and the fourth controllable switch of each battery pack to be switched off.
As an alternative embodiment, referring to fig. 7, the battery pack power supply processing method provided by the present application further includes:
Step 4: the battery management unit acquires target operation parameter information of a battery pack where the battery management unit is located and working states of adjacent battery packs through a data bus.
Optionally, the battery management units of the battery packs are connected with the battery management units of the adjacent battery packs, and the battery management units acquire the working states of the adjacent battery packs and the target operation parameter information of the adjacent battery packs through the battery management units of the adjacent battery packs, wherein the target operation parameter information of the adjacent battery packs is used for indicating the current operation voltage of the battery packs in the adjacent battery packs.
Step 5: the battery management unit determines whether the adjacent battery pack is a normal battery pack according to the running state of the adjacent battery pack, and controls the on-off of each controllable switch in the switch unit according to the target running parameter information so as to adjust the connection mode between the normal battery pack and the adjacent battery pack.
Optionally, the battery management unit determines whether the adjacent battery pack is a normal battery pack according to an operation state of the adjacent battery pack. If the adjacent battery pack is a normal battery pack, the battery management unit controls the on-off of each controllable switch in the switch unit of the battery pack according to the target operation parameter information of the battery management unit so as to adjust the connection mode between the normal battery pack and the adjacent battery pack.
As an alternative embodiment, the step 5 may specifically be:
Step 5.1: if not, the battery management unit acquires the running state of the next adjacent battery pack until the next adjacent battery pack is determined to be a normal battery pack, and controls the on-off of each controllable switch in the switch unit according to the target running parameter information so as to adjust the connection mode between the normal battery pack and the next adjacent battery pack, and the battery management unit of the adjacent battery pack controls the on-off of each controllable switch in the switch unit of the adjacent battery pack according to the connection mode between the normal battery pack and the next adjacent battery pack so as to eliminate the adjacent battery pack.
Optionally, if the battery pack management unit determines that the adjacent battery pack is a faulty battery pack according to the working state of the adjacent battery pack, the battery pack management unit continues to obtain the working state of the next adjacent battery pack until a normal battery pack is determined. Wherein the next adjacent battery pack is used for indicating the battery pack adjacent to the position of the failed battery pack, namely skipping the failed adjacent battery pack.
Optionally, if the next adjacent battery pack is a normal battery pack, the battery management unit controls on-off of each controllable switch in the switch unit of the battery pack according to the target operation parameter information, so as to adjust a connection mode between the battery pack where the battery management unit is located and the next adjacent battery pack, and the connection mode eliminates the adjacent battery pack with the fault.
As an alternative embodiment, fig. 8 is a schematic structural diagram of a structure for rejecting an adjacent battery pack provided by the present application, referring to fig. 8, a structure for rejecting an adjacent battery pack provided by an embodiment of the present application is as follows:
Step 5.1.1: if the connection mode between the normal battery pack and the next adjacent battery pack is serial connection, the battery management unit of the adjacent battery pack controls the second controllable switch in the switch unit of the adjacent battery pack to be on, and controls the first controllable switch, the third controllable switch and the fourth controllable switch to be off.
As an alternative embodiment, fig. 9 is a schematic structural diagram of another structure for rejecting an adjacent battery pack provided by the present application, referring to fig. 9, the structure for rejecting an adjacent battery pack provided by the embodiment of the present application is as follows:
Step 5.1.2: if the connection mode between the normal battery pack and the next adjacent battery pack is parallel connection, the battery management unit of the adjacent battery pack controls the first controllable switch, the second controllable switch, the third controllable switch and the fourth controllable switch in the switch units of the adjacent battery packs to be disconnected.
As an optional embodiment, the above battery pack power supply processing method further includes:
step 6: before the battery pack power supply system is started, the vehicle-mounted storage battery supplies power for the battery management units of the battery packs, and starts with the battery management unit of the first battery pack in the battery packs, and the battery management units of the battery packs supply power to the battery management units of the adjacent battery packs in sequence.
Optionally, the vehicle-mounted storage battery is used for supplying power to the battery management units of the battery packs before the battery pack power supply system is started, traversing the battery management units of the battery packs, and eliminating the battery packs with the battery management units failing according to the power-on condition of the battery management units of the battery packs.
Alternatively, the first battery pack is used for indicating the battery pack directly connected to the output end of the vehicle-mounted storage battery, and the first battery pack can be any battery pack in a battery pack power supply system, which is not particularly limited in the application.
As an alternative embodiment, referring to fig. 10, after the battery management unit of each battery pack supplies power to the battery management unit of an adjacent battery pack, it includes:
Step 7: the battery management unit of each battery pack transmits power supply information to the detection control terminal via the data bus, the power supply information including: power supply time and power supply state.
Optionally, the battery management unit of each battery pack sends power supply information of each battery management unit to the detection control terminal via the data bus, the power supply information is used for indicating power-on conditions of the battery management units of each battery pack, the power supply time is used for indicating power-on time of the battery management units of each battery pack, and the power supply state is used for indicating an operation state of the battery management units of each battery pack after receiving electric quantity transmitted by the battery management units of adjacent battery packs.
Step 8: and the detection control terminal determines the power supply sequence of each battery pack according to the power supply time in the power supply information of each battery pack.
Optionally, the detection control terminal determines the power supply sequence of each battery pack according to the arrangement sequence of the power supply time in the power supply information of each battery pack, where the power supply sequence of each battery pack is used to indicate the connection relationship between the battery management modules of each battery pack.
Step 9: the detection control terminal determines the fault battery pack according to the power supply sequence of each battery pack and the power supply state in the power supply information of each battery pack.
Optionally, the detection control terminal determines whether the power supply of each battery pack is abnormal according to the power supply sequence of each battery pack and the power supply state of each battery pack, and the battery pack with abnormal power supply of the battery management unit of the battery pack is the fault battery pack.
As an alternative implementation manner, fig. 11 is a schematic structural diagram of a vehicle provided by the present application, referring to fig. 11, in which the battery pack power supply system 10 is disposed in the vehicle 20 provided by the embodiment of the present application, the battery pack power supply system 10 flexibly changes the connection relationship between a plurality of battery packs and the connection relationship between each battery pack and a bus to meet the real-time preset power supply requirement of the vehicle 20, and specific implementation processes and technical effects thereof are referred to above, which are not described herein.
The foregoing is merely illustrative of embodiments of the present application, and the present application is not limited thereto, and any changes or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and the present application is intended to be covered by the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
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Effective date of registration: 20250811 Address after: 518100, Building 2, Innovation Smart Port, No. 155 Hongtian Road, Huangpu Community, Xinqiao Street, Bao'an District, Shenzhen City, Guangdong Province, China Applicant after: Xinjie An Automotive Electronics Co.,Ltd. Country or region after: China Address before: 518107 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Xinwangda Power Technology Co.,Ltd. Country or region before: China |