CN104767243B - A kind of charging method and device and charging circuit and the charging system with the circuit - Google Patents
A kind of charging method and device and charging circuit and the charging system with the circuit Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
本发明公开了一种充电方法及装置和充电电路及具有该电路的充电系统，其中充电电路，包括：至少一组大容量充电电池组为大负载提供电能；至少一组小容量充电电池组为小负载提供电能；检测电路检测USB插入信号及大小容量充电电池组的电压值信号，并根据检测结果生成控制信号；开关电路根据检测电路生成的控制信号控制至少一组小容量充电电池组通过USB充电，或者通过大容量充电电池组升到预设电压值后，为其充电；过压过流保护电路对容量充电电池组和小容量充电电池组充电回路进行过压过流保护；充电管理电路对大小容量充电电池组进行充电管理；升压电路根据检测电路生成的控制信号，将大容量充电电池组的电压升到预设电压值后给小容量充电电池组充电。
The invention discloses a charging method and device, a charging circuit and a charging system with the circuit, wherein the charging circuit includes: at least one set of large-capacity rechargeable battery packs to provide electric energy for a large load; at least one set of small-capacity rechargeable battery packs for The small load provides electric energy; the detection circuit detects the USB insertion signal and the voltage value signal of the large and small capacity rechargeable battery pack, and generates a control signal according to the detection result; the switch circuit controls at least one group of small capacity rechargeable battery packs through the USB according to the control signal generated by the detection circuit. Charging, or after the large-capacity rechargeable battery pack is raised to a preset voltage value, it is charged; the overvoltage and overcurrent protection circuit performs overvoltage and overcurrent protection for the charging circuit of the capacity rechargeable battery pack and the small-capacity rechargeable battery pack; the charging management circuit Carry out charge management for rechargeable battery packs with large and small capacities; the booster circuit raises the voltage of the rechargeable battery pack with large capacity to a preset voltage value according to the control signal generated by the detection circuit, and then charges the rechargeable battery pack with small capacity.
Description
技术领域technical field
本发明涉及电池充电技术领域，特别涉及一种充电方法及装置和充电电路及具有该电路的充电系统。The invention relates to the technical field of battery charging, in particular to a charging method and device, a charging circuit and a charging system with the circuit.
背景技术Background technique
随着科学技术的不断发展，智能便携电子产品不断推陈出新。例如：平板电脑，智能手机，移动电源等等。现有智能便携电子产品的供电电池通产采用锂电池供电，可以通过USB接口和交流适配器接口给锂电池充电。With the continuous development of science and technology, smart portable electronic products are constantly being introduced. For example: tablets, smartphones, power banks, etc. The power supply batteries of existing smart portable electronic products are generally powered by lithium batteries, and the lithium batteries can be charged through the USB interface and the AC adapter interface.
在实际应用中，各种不同输入电源的供电接口的驱动能力各不相同，差异很大。例如：同为5V交流适配器，为了满足不同成本要求，驱动能力可以从200mA到3A以上；而USB接口连接器的驱动能力也有300mA和500mA等多种规格。为了满足不同复杂的应用要求，电池的充电系统必须能够智能匹配各种输入接口和不同驱动能力的接口。同时，随着智能便携电子产品的性能的不断增加，功耗不断的增加。为了保证智能便携电子产品的续航能力，电池容量不断增加，与此相对应的充电时间也就增加。为了提高智能便携电子产品的用户体验，充电系统配置了快速充电功能。然而，在充放电系统设计的过程中，发明人发现现有技术中充电系统，通常采用单电池组充电供电方式，这样在单电池组同时为一个较大负载和一个较小负载供电时，较大的负载的波动大容易影响到较小的负载的正常工作，且整个系统的续航时间有限。In practical applications, the driving capabilities of the power supply interfaces of various input power sources are different and vary greatly. For example: the same 5V AC adapter, in order to meet different cost requirements, the driving capacity can range from 200mA to more than 3A; and the driving capacity of the USB interface connector also has various specifications such as 300mA and 500mA. In order to meet different complex application requirements, the battery charging system must be able to intelligently match various input interfaces and interfaces with different driving capabilities. At the same time, as the performance of intelligent portable electronic products continues to increase, the power consumption continues to increase. In order to ensure the battery life of smart portable electronic products, the battery capacity is constantly increasing, and the corresponding charging time is also increasing. In order to improve the user experience of smart portable electronic products, the charging system is equipped with a fast charging function. However, in the process of designing the charging and discharging system, the inventors found that the charging system in the prior art usually adopts the charging and power supply mode of a single battery pack, so that when the single battery pack supplies power to a large load and a small load at the same time, it is relatively Large load fluctuations are likely to affect the normal work of smaller loads, and the battery life of the entire system is limited.
发明内容Contents of the invention
鉴于上述问题，提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的，本发明的技术方案是这样实现的：In view of the above-mentioned problems, the present invention is proposed in order to provide a solution to overcome the above-mentioned problems or at least partly solve the above-mentioned problems. The technical solution of the present invention is achieved in this way:
一方面，本发明提供了一种充电电路，包括：In one aspect, the present invention provides a charging circuit, comprising:
检测电路，至少一组大容量充电电池组和至少一组小容量充电电池组，开关电路，过压过流保护电路，充电管理电路，升压电路；Detection circuit, at least one set of large-capacity rechargeable battery packs and at least one set of small-capacity rechargeable battery packs, switch circuit, overvoltage and overcurrent protection circuit, charge management circuit, boost circuit;
所述至少一组大容量充电电池组，用于为大负载提供电能；The at least one group of large-capacity rechargeable battery packs is used to provide electric energy for large loads;
所述至少一组小容量充电电池组，用于为小负载提供电能；所述检测电路，用来检测USB插入信号及所述大小容量充电电池组的电压值信号，并根据检测结果生成控制信号；The at least one group of small-capacity rechargeable battery packs is used to provide electric energy for small loads; the detection circuit is used to detect the USB insertion signal and the voltage value signal of the large-capacity rechargeable battery pack, and generate a control signal according to the detection results ;
所述开关电路，用来根据所述检测电路生成的控制信号控制所述至少一组小容量充电电池组通过USB充电，或者通过所述大容量充电电池组升到预设电压值后，为其充电；The switch circuit is used to control the at least one set of small-capacity rechargeable battery packs to be charged via USB according to the control signal generated by the detection circuit, or to charge the battery pack after the large-capacity rechargeable battery pack rises to a preset voltage value. Charge;
所述过压过流保护电路，用于对所述大容量充电电池组和所述小容量充电电池组充电回路进行过压过流保护；The overvoltage and overcurrent protection circuit is used to perform overvoltage and overcurrent protection on the charging circuits of the large-capacity rechargeable battery pack and the small-capacity rechargeable battery pack;
所述充电管理电路，用于对所述大小容量充电电池组进行充电管理；The charge management circuit is used for charge management of the rechargeable battery pack with large and small capacities;
所述升压电路，用于根据所述检测电路生成的控制信号，将所述大容量充电电池组的电压升到预设电压值后给所述小容量充电电池组充电。The voltage boosting circuit is used to boost the voltage of the large-capacity rechargeable battery pack to a preset voltage value according to the control signal generated by the detection circuit to charge the small-capacity rechargeable battery pack.
优选地，所述过压过流保护电路包括：大容量充电电池组过压过流保护电路和小容量充电电池组过压过流保护电路；Preferably, the overvoltage and overcurrent protection circuit includes: an overvoltage and overcurrent protection circuit for a large-capacity rechargeable battery pack and an overvoltage and overcurrent protection circuit for a small-capacity rechargeable battery pack;
所述大容量充电电池组过压过流保护电路，用于对所述大容量充电电池组充电回路进行过压过流保护；The overvoltage and overcurrent protection circuit of the large-capacity rechargeable battery pack is used to perform overvoltage and overcurrent protection on the charging circuit of the large-capacity rechargeable battery pack;
所述小容量充电电池组过压过流保护电路，用于对所述小容量充电电池组充电回路进行过压过流保护。The overvoltage and overcurrent protection circuit of the small-capacity rechargeable battery pack is used for overvoltage and overcurrent protection of the charging circuit of the small-capacity rechargeable battery pack.
优选地，所述充电管理电路包括：大容量充电电池组充电管理电路和小容量充电电池组充电管理电路；Preferably, the charging management circuit includes: a charging management circuit for a large-capacity rechargeable battery pack and a charging management circuit for a small-capacity rechargeable battery pack;
所述大容量充电电池组充电管理电路，用于管理所述大容量充电电池组；The charging management circuit of the large-capacity rechargeable battery pack is used to manage the large-capacity rechargeable battery pack;
所述小容量充电电池组充电管理电路，用于管理所述小容量充电电池组。The charging management circuit of the small-capacity rechargeable battery pack is used to manage the small-capacity rechargeable battery pack.
另一方面，本发明提供了一种充电系统，包括：如上所述任一项的充电电路。In another aspect, the present invention provides a charging system, comprising: the charging circuit according to any one of the above items.
再一方面，本发明提供了一种充电方法，该方法包括：In another aspect, the present invention provides a charging method, the method comprising:
获取USB插入信号；Get the USB plug-in signal;
根据所述USB插入信号，向至少一组小容量充电电池组和至少一组大容量充电电池组发送充电指示信号，以便所述至少一组小容量充电电池组和至少一组大容量充电电池组的充电回路导通，开始充电。According to the USB plug-in signal, a charging indication signal is sent to at least one group of small-capacity rechargeable battery packs and at least one group of large-capacity rechargeable battery packs, so that the at least one group of small-capacity rechargeable battery packs and at least one group of large-capacity rechargeable battery packs The charging circuit of the battery is turned on and starts charging.
优选地，该方法还包括：Preferably, the method also includes:
当所述充电电池的充电回路处于非充电状态下，获取所述至少一组大容量充电电池组的电压值，以及所述至少一组小容量充电电池组的对应电压值；When the charging circuit of the rechargeable battery is in a non-charging state, obtain the voltage value of the at least one group of high-capacity rechargeable battery packs, and the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs;
判断所述至少一组大容量充电电池组的电压值是否高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值是否低于第二预设电压值；Judging whether the voltage value of the at least one group of large-capacity rechargeable battery packs is higher than a first preset voltage value, and whether the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs is lower than a second preset voltage value;
当所述至少一组大容量充电电池组的电压值高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值低于第二预设电压值，向所述至少一组大容量充电电池组发送充电控制信号，向升压电路发送升压使能信号，向开关电路发送开关控制信号，以便将所述至少一组大容量充电电池组电压进行升压处理，向所述至少一组小容量充电电池组进行充电。When the voltage value of the at least one set of high-capacity rechargeable battery packs is higher than the first preset voltage value, the corresponding voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value, and the voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value, and the voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value. A group of large-capacity rechargeable battery packs sends a charging control signal, sends a boost enable signal to the boost circuit, and sends a switch control signal to the switch circuit, so as to boost the voltage of the at least one group of large-capacity rechargeable battery packs, and send The at least one set of small-capacity rechargeable battery packs is charged.
另一方面，本发明提供了一种充电装置，该充电装置包括：In another aspect, the present invention provides a charging device, which includes:
信号获取单元，用于获取USB插入信号；a signal acquisition unit, configured to acquire a USB insertion signal;
信号发送单元，用于根据所述USB插入信号，向至少一组小容量充电电池组和至少一组大容量充电电池组发送充电指示信号，以便所述充电电池的充电回路导通，开始充电。The signal sending unit is configured to send a charging instruction signal to at least one set of small-capacity rechargeable battery packs and at least one set of large-capacity rechargeable battery packs according to the USB insertion signal, so that the charging circuit of the rechargeable battery is turned on and charging starts.
优选地，该装置还包括：电压值获取单元，用于当所述充电电池的充电回路处于非充电状态下，获取所述至少一组大容量充电电池组的电压值，以及所述至少一组小容量充电电池组的对应电压值；Preferably, the device further includes: a voltage value acquisition unit, configured to acquire the voltage values of the at least one set of high-capacity rechargeable battery packs when the charging circuit of the rechargeable battery is in a non-charging state, and the at least one set of The corresponding voltage value of the small-capacity rechargeable battery pack;
判断单元，用于判断所述至少一组大容量充电电池组的电压值是否高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值是否低于第二预设电压值；A judging unit, configured to judge whether the voltage value of the at least one group of high-capacity rechargeable battery packs is higher than a first preset voltage value, and whether the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs is lower than a second preset voltage value Voltage value;
所述信号发送单元，还用于当所述至少一组大容量充电电池组的电压值高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值低于第二预设电压值，向所述至少一组大容量充电电池组发送充电控制信号，向升压电路发送升压使能信号，向开关电路发送开关控制信号，以便将所述至少一组大容量充电电池组电压进行升压处理，向所述至少一组小容量充电电池组进行充电。The signal sending unit is further configured to: when the voltage value of the at least one set of high-capacity rechargeable battery packs is higher than a first preset voltage value, the corresponding voltage value of the at least one set of small-capacity rechargeable battery packs is lower than a second preset voltage value. Preset the voltage value, send a charging control signal to the at least one group of large-capacity rechargeable battery packs, send a boost enable signal to the boost circuit, and send a switch control signal to the switch circuit, so as to charge the at least one group of large-capacity batteries The voltage of the battery pack is boosted to charge the at least one set of small-capacity rechargeable battery packs.
本发明的技术方案通过将充电电池组分为小容量充电电池组和大容量充电电池组分别进行充电以及分别由小容量充电电池组为较小负载供电，由大容量充电电池组为较大负载供电的方式将较大负载与较小负载分离供电，从而使得采用本发明技术方案的系统不但可以延长续航时间，提高用户体验，还可以降低较大负载和较小负载之间的互扰。The technical solution of the present invention divides the rechargeable battery group into a small-capacity rechargeable battery group and a large-capacity rechargeable battery group to charge respectively, and the small-capacity rechargeable battery group supplies power for a relatively small load, and the large-capacity rechargeable battery group provides power for a relatively large load. The power supply method separates the larger load from the smaller load, so that the system adopting the technical solution of the present invention can not only extend the battery life, improve user experience, but also reduce the mutual interference between the larger load and the smaller load.
附图说明Description of drawings
图1为本发明实施例提供的一种充电电路结构示意图；Fig. 1 is a schematic structural diagram of a charging circuit provided by an embodiment of the present invention;
图2为本发明实施例提供的另一种充电电路结构示意图；FIG. 2 is a schematic structural diagram of another charging circuit provided by an embodiment of the present invention;
图3为本发明实施例提供的一种充电电路图；Fig. 3 is a kind of charging circuit diagram provided by the embodiment of the present invention;
图4为本发明实施例提供的一种充电方法流程图；Fig. 4 is a flow chart of a charging method provided by an embodiment of the present invention;
图5为本发明实施例提供的一种充电装置结构示意图；Fig. 5 is a schematic structural diagram of a charging device provided by an embodiment of the present invention;
图6为本发明实施例提供的一种充电系统结构示意图。Fig. 6 is a schematic structural diagram of a charging system provided by an embodiment of the present invention.
具体实施方式detailed description
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
如图1为所示为本发明实施例提供的一种充电电路；该电路包括：As shown in Figure 1, a charging circuit provided by an embodiment of the present invention; the circuit includes:
检测电路，至少一组大容量充电电池组和至少一组小容量充电电池组，开关电路，过压过流保护电路，充电管理电路，升压电路；Detection circuit, at least one set of large-capacity rechargeable battery packs and at least one set of small-capacity rechargeable battery packs, switch circuit, overvoltage and overcurrent protection circuit, charge management circuit, boost circuit;
所述至少一组大容量充电电池组，用于为大负载提供电能；The at least one group of large-capacity rechargeable battery packs is used to provide electric energy for large loads;
所述至少一组小容量充电电池组，用于为小负载提供电能；所述检测电路，用来检测USB插入信号及所述大小容量充电电池组的电压值信号，并根据检测结果生成控制信号；The at least one group of small-capacity rechargeable battery packs is used to provide electric energy for small loads; the detection circuit is used to detect the USB insertion signal and the voltage value signal of the large-capacity rechargeable battery pack, and generate a control signal according to the detection results ;
所述开关电路，用来根据所述检测电路生成的控制信号控制所述至少一组小容量充电电池组通过USB充电，或者通过所述大容量充电电池组升到预设电压值后，为其充电；The switch circuit is used to control the at least one set of small-capacity rechargeable battery packs to be charged via USB according to the control signal generated by the detection circuit, or to charge the battery pack after the large-capacity rechargeable battery pack rises to a preset voltage value. Charge;
所述过压过流保护电路，用于对所述大容量充电电池组和所述小容量充电电池组充电回路进行过压过流保护；The overvoltage and overcurrent protection circuit is used to perform overvoltage and overcurrent protection on the charging circuits of the large-capacity rechargeable battery pack and the small-capacity rechargeable battery pack;
所述充电管理电路，用于对所述大小容量充电电池组进行充电管理；The charge management circuit is used for charge management of the rechargeable battery pack with large and small capacities;
所述升压电路，用于根据所述检测电路生成的控制信号，将所述大容量充电电池组的电压升到预设电压值后给所述小容量充电电池组充电。The voltage boosting circuit is used to boost the voltage of the large-capacity rechargeable battery pack to a preset voltage value according to the control signal generated by the detection circuit to charge the small-capacity rechargeable battery pack.
需要说明的是，如图2所示所述过压过流保护电路包括：大容量充电电池组过压过流保护电路和小容量充电电池组过压过流保护电路；所述大容量充电电池组过压过流保护电路和小容量充电电池组过压过流保护电路分别采用OVP/OCP保护芯片U2，OVP/OCP保护芯片U5It should be noted that, as shown in Figure 2, the overvoltage and overcurrent protection circuit includes: a large-capacity rechargeable battery pack overvoltage and overcurrent protection circuit and a small-capacity rechargeable battery pack overvoltage and overcurrent protection circuit; The group overvoltage and overcurrent protection circuit and the small-capacity rechargeable battery pack overvoltage and overcurrent protection circuit respectively use OVP/OCP protection chip U2 and OVP/OCP protection chip U5
所述大容量充电电池组过压过流保护电路，用于对所述大容量充电电池组充电回路进行过压过流保护；The overvoltage and overcurrent protection circuit of the large-capacity rechargeable battery pack is used to perform overvoltage and overcurrent protection on the charging circuit of the large-capacity rechargeable battery pack;
所述小容量充电电池组过压过流保护电路，用于对所述小容量充电电池组充电回路进行过压过流保护。The overvoltage and overcurrent protection circuit of the small-capacity rechargeable battery pack is used for overvoltage and overcurrent protection of the charging circuit of the small-capacity rechargeable battery pack.
所述充电管理电路包括：大容量充电电池组充电管理电路和小容量充电电池组充电管理电路；所述大容量充电电池组充电管理电路和小容量充电电池组充电管理电路分别采用充电管理芯片U3,充电管理芯片U4The charging management circuit includes: a charging management circuit for a large-capacity rechargeable battery pack and a charging management circuit for a small-capacity rechargeable battery pack; the charging management circuit for a large-capacity rechargeable battery pack and the charging management circuit for a small-capacity rechargeable battery pack respectively use a charging management chip U3 , charging management chip U4
所述大容量充电电池组充电管理电路，用于管理所述大容量充电电池组；The charging management circuit of the large-capacity rechargeable battery pack is used to manage the large-capacity rechargeable battery pack;
所述小容量充电电池组充电管理电路，用于管理所述小容量充电电池组。The charging management circuit of the small-capacity rechargeable battery pack is used to manage the small-capacity rechargeable battery pack.
BAT-1：是小容量的电池组，供比较小的负载LOAD1使用；BAT-1: It is a small-capacity battery pack, used for relatively small load LOAD1;
BAT-2:是大容量的电池组，供比较大的负载LOAD2使用；BAT-2: It is a large-capacity battery pack, which is used for relatively large load LOAD2;
OVP/OCP-1:是电池组BAT-1的充电回路中的过压过流保护芯片；OVP/OCP-1: It is the overvoltage and overcurrent protection chip in the charging circuit of the battery pack BAT-1;
OVP/OCP-2:是电池组BAT-2的充电回路中的过压过流保护芯片；OVP/OCP-2: It is the overvoltage and overcurrent protection chip in the charging circuit of the battery pack BAT-2;
U4:是小容量的电池BAT-1的充电管理芯片；U4: It is the charging management chip of the small-capacity battery BAT-1;
U3:是大容量的电池BAT-2的充电管理芯片；U3: It is the charging management chip of the large-capacity battery BAT-2;
检测电路:是USB插入充电检测，确认是否正在使用USB充电；Detection circuit: USB plug-in charging detection, confirm whether USB charging is being used;
升压电路采用DCDC(Boost)，将电池组BAT-2的电压升到5V然后给BAT-1充电；The boost circuit adopts DCDC (Boost), which raises the voltage of battery pack BAT-2 to 5V and then charges BAT-1;
开关电路：用来控制是使用USB充电，还是使用电池组BAT-2升压后的电压充电；Switching circuit: used to control whether to use USB charging or to use the voltage boosted by the battery pack BAT-2 to charge;
USB检测信号:发送到系统的MCU，告知系统，是否USB已经插入充电；USB detection signal: sent to the MCU of the system to inform the system whether the USB has been plugged in for charging;
开关控制信号Switch_control_signal:是由系统的MCU发过来的控制信号，用来控制用USB充电还是用升压后的电压进行充电；Switch control signal Switch_control_signal: It is a control signal sent by the MCU of the system, which is used to control charging with USB or charging with boosted voltage;
检测信号ADC-1/检测信号ADC-2：分别是BAT-1，BAT-2的电池组电压检测，将检测信号给到系统MCU的ADC管脚；Detection signal ADC-1/detection signal ADC-2: the battery pack voltage detection of BAT-1 and BAT-2 respectively, and the detection signal is sent to the ADC pin of the system MCU;
充电管理信号Setting_Detect_signal_1/和Setting_Detect_signal_2：分别与MCU连接，然后由MCU来分别配置对两个电池的充电，以及对两个电池的充电进行时时检测；Charging management signals Setting_Detect_signal_1/ and Setting_Detect_signal_2: respectively connected to the MCU, and then the MCU configures the charging of the two batteries respectively, and constantly detects the charging of the two batteries;
正常充电的时候，当USB插入后，USB检测信号发送到MCU，然后通过USB给两个电池充电；During normal charging, when the USB is plugged in, the USB detection signal is sent to the MCU, and then the two batteries are charged through the USB;
在使用的时候，一旦检测到BAT-1的电池电量很低至预设阈值，而电池组BAT-2的电池不低于预设阈值，就通过MCU控制BAT-2的电压经过升压电路DCDC-BOOST升压后，经过开关电路Swtich circuit，为BAT-1进行充电。When in use, once it is detected that the battery power of BAT-1 is very low to the preset threshold, and the battery of the battery pack BAT-2 is not lower than the preset threshold, the MCU controls the voltage of BAT-2 to pass through the booster circuit DCDC - After the BOOST is boosted, the BAT-1 is charged through the switching circuit Swtich circuit.
基于以上实施例，设所述大容量充电电池组为一组，所述小容量充电电池组为一组，如图3所示，为本发明实施例提供的一种充电电路；该电路包括：检测电路，大容量充电电池组BAT-2,小容量充电电池组BAT-1，开关电路，过压过流保护电路，充电管理电路，升压电路；Based on the above embodiments, it is assumed that the large-capacity rechargeable battery pack is a group, and the small-capacity rechargeable battery pack is a group, as shown in FIG. 3 , which is a charging circuit provided by an embodiment of the present invention; the circuit includes: Detection circuit, large-capacity rechargeable battery pack BAT-2, small-capacity rechargeable battery pack BAT-1, switch circuit, overvoltage and overcurrent protection circuit, charging management circuit, boost circuit;
其中，所述过压过流保护电路包括：大容量充电电池组过压过流保护电路和小容量充电电池组过压过流保护电路；所述大容量充电电池组过压过流保护电路和小容量充电电池组过压过流保护电路分别采用OVP/OCP保护芯片U2，OVP/OCP保护芯片U5；Wherein, the overvoltage and overcurrent protection circuit includes: a large-capacity rechargeable battery pack overvoltage and overcurrent protection circuit and a small-capacity rechargeable battery pack overvoltage and overcurrent protection circuit; the large-capacity rechargeable battery pack overvoltage and overcurrent protection circuit and The overvoltage and overcurrent protection circuit of the small-capacity rechargeable battery pack adopts OVP/OCP protection chip U2 and OVP/OCP protection chip U5 respectively;
所述充电管理电路包括：大容量充电电池组充电管理电路和小容量充电电池组充电管理电路；所述大容量充电电池组充电管理电路和小容量充电电池组充电管理电路分别采用充电管理芯片U3,充电管理芯片U4；The charging management circuit includes: a charging management circuit for a large-capacity rechargeable battery pack and a charging management circuit for a small-capacity rechargeable battery pack; the charging management circuit for a large-capacity rechargeable battery pack and the charging management circuit for a small-capacity rechargeable battery pack respectively use a charging management chip U3 , charging management chip U4;
所述升压电路采用升压DCDC(BOOST)芯片U1；The step-up circuit adopts step-up DCDC (BOOST) chip U1;
所述开关电路由开关管Q1，Q2，Q5，Q6以及电阻R4和电阻R5组成；The switch circuit is composed of switch tubes Q1, Q2, Q5, Q6, resistors R4 and R5;
针对以上所述OVP/OCP保护芯片U5的周围的电阻的配置，可以实现对电池组BAT-1的充电的过压和过流的保护阈值的设置，以及对电池的监控；电路中的电容C20，电阻R19，电阻R18，根据芯片的具体选型，以及需要来进行选择相应的容值和阻值，所述OVP/OCP保护芯片U2周围的器件选型与OVP/OCP保护芯片U5的方法相同，也是根据对电池组BAT-2的充电的过压和过流保护的阈值的设置；For the configuration of the resistors around the OVP/OCP protection chip U5 described above, the setting of the overvoltage and overcurrent protection thresholds for charging the battery pack BAT-1 can be realized, as well as the monitoring of the battery; the capacitor C20 in the circuit , resistor R19, resistor R18, select the corresponding capacitance and resistance according to the specific type selection of the chip and the needs, the device selection around the OVP/OCP protection chip U2 is the same as the method for the OVP/OCP protection chip U5 , is also based on the setting of the overvoltage and overcurrent protection thresholds for charging the battery pack BAT-2;
充电管理芯片U4与充电管理芯片U3，通过对周围器件的配置，来分别管控电池组BAT-1和BAT-2充电。The charging management chip U4 and the charging management chip U3 respectively control the charging of the battery packs BAT-1 and BAT-2 through the configuration of surrounding devices.
其中，附图中I2C_SCL_CHARGER_1，I2C_SDA_CHARGER_1与I2C_SCL_CHARGER_2，I2C_SDA_CHARGER_2为MCU与充电IC之间进行通信的信号，STAT_1与STAT_2为充电IC的状态反馈给MCU的信号，CE_1与CE_2为充电IC的使能控制信号，/PG_1与/PG_2为电源地的控制信号，开漏输出；通过以上信号传递，实现MCU对两个电池组的充电配置，以及电池组充电状态的实时控制；Among them, in the figure, I2C_SCL_CHARGER_1, I2C_SDA_CHARGER_1 and I2C_SCL_CHARGER_2, I2C_SDA_CHARGER_2 are the signals for communication between the MCU and the charging IC, STAT_1 and STAT_2 are the signals for the state feedback of the charging IC to the MCU, CE_1 and CE_2 are the enabling control signals of the charging IC, /PG_1 and /PG_2 are the control signals of the power ground, open-drain output; through the transmission of the above signals, the MCU can realize the charging configuration of the two battery packs and the real-time control of the charging status of the battery packs;
TH1，TH2，分别是放在两个电池组附近热敏电阻，对两个电池的温度进行实时采集，并将所述采集到的温度信息发送给MCU。TH1 and TH2 are the thermistors placed near the two battery packs respectively, which collect the temperature of the two batteries in real time, and send the collected temperature information to the MCU.
升压DCDC(BOOST)芯片U1周围的器件也是根据芯片的选型以及需要来具体的选择。R2，R1是用来设置DCDC的输出电压Vout，Vout＝Vref*[R2/(R1+R2)]；The components around the step-up DCDC (BOOST) chip U1 are also specifically selected according to the type selection and needs of the chip. R2 and R1 are used to set the output voltage Vout of DCDC, Vout=Vref*[R2/(R1+R2)];
R19，R3用来设置限流预置值；R19 and R3 are used to set the current limit preset value;
R15，R16；R11，R12，分别用来配置充电IC的充电的电流的值以及快充电流的值；R15, R16; R11, R12 are used to configure the value of the charging current of the charging IC and the value of the fast charging current;
正常充电的时候，一旦USB插入，USB_INPUT_DETECT采样到USB插入信号，然后将所述插入信号发送到MCU，然后，MCU发出控制信号给到USB_CHARGE_CONTROL,控制三极管Q6导通，然后Q5导通，于是电池组BAT-1的充电回路导通，可以对电池组BAT-1进行充电；During normal charging, once the USB is plugged in, USB_INPUT_DETECT samples the USB plug-in signal, and then sends the plug-in signal to the MCU, and then the MCU sends a control signal to USB_CHARGE_CONTROL, which controls the transistor Q6 to turn on, and then Q5 to turn on, so the battery pack The charging circuit of BAT-1 is turned on, and the battery pack BAT-1 can be charged;
电池组BAT-2的充电回路，只要MCU检测到USB插入，就指示电池组BAT-2的充电管理芯片U3开始对电池BAT-2进行充电。The charging circuit of the battery pack BAT-2, as long as the MCU detects that the USB is plugged in, will instruct the charging management chip U3 of the battery pack BAT-2 to start charging the battery BAT-2.
在非充电状态，并且不能用USB充电的时候，如果检测到电池组BAT-1的电压低于预设阈值，而电池组BAT-2的电压不低于预设阈值，则由MCU发出控制命令给到BAT_2_CHARGE_CONTROL和DCDC_EN(都是高电平)，于是U1被使能，三极管Q2导通，Q1也被导通，于是通过BAT-2经过升压后给到BAT-1的充电回路，对BAT-1进行充电。In the non-charging state, and can not be charged by USB, if it is detected that the voltage of the battery pack BAT-1 is lower than the preset threshold, and the voltage of the battery pack BAT-2 is not lower than the preset threshold, the MCU will issue a control command It is given to BAT_2_CHARGE_CONTROL and DCDC_EN (both high), so U1 is enabled, transistor Q2 is turned on, and Q1 is also turned on, so BAT-2 is boosted and then given to the charging circuit of BAT-1. -1 for recharging.
如图4所示，为本发明实施例提供的一种充电方法；该方法包括：As shown in Figure 4, it is a charging method provided by an embodiment of the present invention; the method includes:
401：获取USB插入信号；401: Obtain a USB insertion signal;
402：根据所述USB插入信号，向至少一组小容量充电电池组和至少一组大容量充电电池组发送充电指示信号，以便所述至少一组小容量充电电池组和至少一组大容量充电电池组的充电回路导通，开始充电。402: According to the USB insertion signal, send a charging indication signal to at least one group of small-capacity rechargeable battery packs and at least one group of large-capacity rechargeable battery packs, so that the at least one group of small-capacity rechargeable battery packs and at least one group of large-capacity rechargeable battery packs are charged. The charging circuit of the battery pack is turned on and starts charging.
需要说明的是，该方法还包括：It should be noted that the method also includes:
当所述充电电池的充电回路处于非充电状态下，获取所述至少一组大容量充电电池组的电压值，以及所述至少一组小容量充电电池组的对应电压值；When the charging circuit of the rechargeable battery is in a non-charging state, obtain the voltage value of the at least one group of high-capacity rechargeable battery packs, and the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs;
判断所述至少一组大容量充电电池组的电压值是否高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值是否低于第二预设电压值；Judging whether the voltage value of the at least one group of large-capacity rechargeable battery packs is higher than a first preset voltage value, and whether the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs is lower than a second preset voltage value;
当所述至少一组大容量充电电池组的电压值高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值低于第二预设电压值，向所述至少一组大容量充电电池组发送充电控制信号，向升压电路发送升压使能信号，向开关电路发送开关控制信号，以便将所述至少一组大容量充电电池组电压进行升压处理，向所述至少一组小容量充电电池组进行充电。When the voltage value of the at least one set of high-capacity rechargeable battery packs is higher than the first preset voltage value, the corresponding voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value, and the voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value, and the voltage value of the at least one set of small-capacity rechargeable battery packs is lower than the second preset voltage value. A group of large-capacity rechargeable battery packs sends a charging control signal, sends a boost enable signal to the boost circuit, and sends a switch control signal to the switch circuit, so as to boost the voltage of the at least one group of large-capacity rechargeable battery packs, and send The at least one set of small-capacity rechargeable battery packs is charged.
如图5所示，为本发明实施例提供的一种充电装置；该装置包括：As shown in Figure 5, it is a charging device provided by an embodiment of the present invention; the device includes:
信号获取单元501，用于获取USB插入信号；A signal acquisition unit 501, configured to acquire a USB insertion signal;
信号发送单元502，用于根据所述USB插入信号，向至少一组小容量充电电池组和至少一组大容量充电电池组发送充电指示信号，以便所述充电电池的充电回路导通，开始充电。The signal sending unit 502 is configured to send a charging indication signal to at least one group of small-capacity rechargeable battery packs and at least one group of large-capacity rechargeable battery packs according to the USB insertion signal, so that the charging circuit of the rechargeable battery is turned on and charging starts .
需要说明的是，该装置还包括：It should be noted that the device also includes:
电压值获取单元，用于当所述充电电池的充电回路处于非充电状态下，获取所述至少一组大容量充电电池组的电压值，以及所述至少一组小容量充电电池组的对应电压值；A voltage value acquisition unit, configured to acquire the voltage value of the at least one group of high-capacity rechargeable battery packs and the corresponding voltage of the at least one group of small-capacity rechargeable battery packs when the charging circuit of the rechargeable battery is in a non-charging state value;
判断单元，用于判断所述至少一组大容量充电电池组的电压值是否高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值是否低于第二预设电压值；A judging unit, configured to judge whether the voltage value of the at least one group of high-capacity rechargeable battery packs is higher than a first preset voltage value, and whether the corresponding voltage value of the at least one group of small-capacity rechargeable battery packs is lower than a second preset voltage value Voltage value;
所述信号发送单元，还用于当所述至少一组大容量充电电池组的电压值高于第一预设电压值，所述至少一组小容量充电电池组的对应电压值低于第二预设电压值，向所述至少一组大容量充电电池组发送充电控制信号，向升压电路发送升压使能信号，向开关电路发送开关控制信号，以便将所述至少一组大容量充电电池组电压进行升压处理，向所述至少一组小容量充电电池组进行充电。The signal sending unit is further configured to: when the voltage value of the at least one set of high-capacity rechargeable battery packs is higher than a first preset voltage value, the corresponding voltage value of the at least one set of small-capacity rechargeable battery packs is lower than a second preset voltage value. Preset the voltage value, send a charging control signal to the at least one group of large-capacity rechargeable battery packs, send a boost enable signal to the boost circuit, and send a switch control signal to the switch circuit, so as to charge the at least one group of large-capacity batteries The voltage of the battery pack is boosted to charge the at least one set of small-capacity rechargeable battery packs.
如图6所示，为本发明实施例提供的一种充电系统，该充电系统包括：如上所述任意一种充电电路。As shown in FIG. 6 , it is a charging system provided by an embodiment of the present invention, and the charging system includes: any charging circuit as described above.
本发明的技术方案通过将充电电池组分为小容量充电电池组和大容量充电电池组分别进行充电以及分别由小容量充电电池组为较小负载供电，由大容量充电电池组为较大负载供电的方式将较大负载与较小负载分离供电，从而使得采用本发明技术方案的系统不但可以延长续航时间，提高用户体验，还可以降低较大负载和较小负载之间的互扰。The technical solution of the present invention divides the rechargeable battery group into a small-capacity rechargeable battery group and a large-capacity rechargeable battery group to charge respectively, and the small-capacity rechargeable battery group supplies power for a relatively small load, and the large-capacity rechargeable battery group provides power for a relatively large load. The power supply method separates the larger load from the smaller load, so that the system adopting the technical solution of the present invention can not only extend the battery life, improve user experience, but also reduce the mutual interference between the larger load and the smaller load.
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本发明的保护范围内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158551.5A CN104767243B (en) | 2015-04-03 | 2015-04-03 | A kind of charging method and device and charging circuit and the charging system with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510158551.5A CN104767243B (en) | 2015-04-03 | 2015-04-03 | A kind of charging method and device and charging circuit and the charging system with the circuit |
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| Publication Number | Publication Date |
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| CN104767243A CN104767243A (en) | 2015-07-08 |
| CN104767243B true CN104767243B (en) | 2017-05-31 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205193796U (en) * | 2015-08-21 | 2016-04-27 | 无锡中感微电子股份有限公司 | Communication interface circuit, portable electronic equipment and electronic system |
| CN105548773A (en) * | 2016-01-26 | 2016-05-04 | 江苏才易电子科技有限公司 | Intelligent detector compatible with quick charger and testing method thereof |
| CN107579566B (en) * | 2017-09-15 | 2020-03-27 | 青岛海信移动通信技术股份有限公司 | Battery charging circuit and charging method |
| CN109217425A (en) * | 2018-10-16 | 2019-01-15 | 深圳市联讯发科技有限公司 | A kind of charger circuit and its intelligent charge control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399450A (en) * | 2007-09-30 | 2009-04-01 | 联想(北京)有限公司 | Apparatus and method for controlling electricity supply to portable device by multiple batteries |
| CN101179199A (en) * | 2007-11-08 | 2008-05-14 | 宇龙计算机通信科技(深圳)有限公司 | Terminal and charging method thereof |
| CN102437594A (en) * | 2010-09-29 | 2012-05-02 | 联想(北京)有限公司 | Terminal, terminal system as well as charge-discharge method and discharge method thereof |
| CN204615437U (en) * | 2015-04-03 | 2015-09-02 | 青岛歌尔声学科技有限公司 | A charging device, a charging circuit, and a charging system having the same |
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