WO2019127010A1 - Booster pump-based battery management system and battery - Google Patents

Booster pump-based battery management system and battery Download PDF

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WO2019127010A1
WO2019127010A1 PCT/CN2017/118601 CN2017118601W WO2019127010A1 WO 2019127010 A1 WO2019127010 A1 WO 2019127010A1 CN 2017118601 W CN2017118601 W CN 2017118601W WO 2019127010 A1 WO2019127010 A1 WO 2019127010A1
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circuit
resistor
battery
signal
charging
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PCT/CN2017/118601
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French (fr)
Chinese (zh)
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秦威
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深圳市道通智能航空技术有限公司
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Priority to PCT/CN2017/118601 priority Critical patent/WO2019127010A1/en
Publication of WO2019127010A1 publication Critical patent/WO2019127010A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A booster pump-based battery management system and a battery, the system comprising: a branch circuit corresponding to a target circuit (1), and a booster pump (2) connected to the branch circuit (1), the branch circuit (1) being connected between the target circuit and the booster pump (2), and an output end of the booster pump (2) being connected to a switch (3) of the target circuit; a branch circuit corresponding to the target circuit (1), which is used for monitoring an electrical signal in the target circuit, and sending a trigger signal to the booster pump (2) when an electrical signal in the target circuit satisfies a preset trigger condition; the booster pump (2), which is used for outputting a high voltage control signal according to the trigger signal, the high voltage control signal being used to control the switch (3) of the target circuit to turn off. The booster pump-based battery management system and the battery may achieve battery management in a high voltage scenario, and may be implemented by means of conventional components, thereby effectively saving the costs of battery management.

Description

基于升压泵的电池管理系统及电池Battery management system and battery based on boost pump 技术领域Technical field
本申请涉及电子领域,尤其涉及一种基于升压泵的电池管理系统及电池。The present application relates to the field of electronics, and in particular to a battery management system and battery based on a booster pump.
背景技术Background technique
随着各类用电设备,例如终端、无人机、汽车等不断发展,其内置集成或者配置的电子模块不断增加,相应的,用电设备对电池的要求也越来越严格。例如,为了满足用电设备的供电以保证正常工作,电池需要提供越来越高的电压,通常的,会通过配置多个串联的电池以保证供电。With the continuous development of various types of electrical equipment, such as terminals, drones, automobiles, etc., the electronic modules with built-in integration or configuration are increasing, and correspondingly, the requirements for batteries for electric equipment are becoming more and more strict. For example, in order to meet the power supply of the powered device to ensure normal operation, the battery needs to provide an increasingly higher voltage. Generally, multiple batteries connected in series are configured to ensure power supply.
基于上述情况,目前的高压电池对电池管理也提出了更高的要求。具体的,电池管理(BATTERY MANAGEMENT SYSTEM,简称BMS)用于实现对电池的各个工作回路进行管理和维护,举例来说,电池管理可负责维护电池的充放电回路的短路保护、过温欠温保护等。然而在高压电池的场景下,对电池管理系统提出了挑战,受电池管理系统的高电压制程等方面的限制,目前还没有能够可靠地适用于高压电池的电池管理方案。Based on the above situation, the current high-voltage battery also puts higher requirements on battery management. Specifically, BATTERY MANAGEMENT SYSTEM (BMS) is used to manage and maintain various working circuits of the battery. For example, battery management can be responsible for maintaining short-circuit protection and over-temperature protection of the battery charging and discharging circuit. Wait. However, in the case of high-voltage batteries, the battery management system is challenged, and is limited by the high-voltage process of the battery management system. At present, there is no battery management solution that can be reliably applied to high-voltage batteries.
发明内容Summary of the invention
本申请提供了一种基于升压泵的电池管理系统及电池,能够可靠实现适用于高压场景下的电池管理。The application provides a battery management system and a battery based on a booster pump, which can reliably implement battery management suitable for a high voltage scene.
本申请的第一方面是为了提供一种基于升压泵的电池管理系统,包括:目标回路对应的支路、以及与所述支路连接的升压泵;其中,所述支路连接在所述目标回路与所述升压泵之间连接,所述升压泵的输出端与所述目标回路的开关连接;所述目标回路对应的支路,用于监测所述目标回路中的电信号,当所述目标回路中的电信号满足预设的触发条件时,向所述升压泵发送触发信号;所述升压泵,用于根据所述触发信号输出高压控制信号,所述高压控制信号用于控制所述目标回路的开关关断。A first aspect of the present application is to provide a booster pump-based battery management system including: a branch corresponding to a target loop, and a booster pump connected to the branch; wherein the branch is connected Connecting a target circuit to the booster pump, an output of the booster pump is coupled to a switch of the target circuit; a branch corresponding to the target loop for monitoring an electrical signal in the target loop Sending a trigger signal to the booster pump when an electrical signal in the target loop satisfies a preset trigger condition; the boosting pump is configured to output a high voltage control signal according to the trigger signal, the high voltage control The signal is used to control the switching of the target loop to be turned off.
本申请的第二方面是为了提供一种电池,包括:如前所述的电池管理系统;所述电池管理系统连接在所述电池的正负极和所述电池的正负接口之间。A second aspect of the present application is to provide a battery comprising: a battery management system as described above; the battery management system being coupled between a positive and negative terminals of the battery and a positive and negative interface of the battery.
本申请提供的基于升压泵的电池管理系统及电池,包括针对不同目标回路的支路,以及与不同目标回路的支路连接的升压泵,具体的,该支路执行在监测到目标回路中的电信号满足预设的触发条件时,向升压泵发送触发信号,升压信号基于目标回路对应的支路发送的触发信号输出高压控制信号,该高压控制信号用于控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的保护和维护。可以理解,通过升压泵根据接收到的触发信号能够输出电压较高的控制信号,从而实现高压场景下的电池管理,并且本方案能够通过常规元器件实现,因此能够有效节省电池管理的成本。The boost pump-based battery management system and battery provided by the present application include a branch for different target circuits, and a boost pump connected to a branch of a different target circuit. Specifically, the branch performs monitoring on the target loop. When the electrical signal in the middle meets the preset trigger condition, the trigger signal is sent to the booster pump, and the boost signal outputs a high voltage control signal based on the trigger signal sent by the branch corresponding to the target loop, and the high voltage control signal is used to control the target loop. The switch is turned off, thereby cutting off the target loop and achieving protection and maintenance of the target loop. It can be understood that the boosting pump can output a high voltage control signal according to the received trigger signal, thereby realizing battery management in a high voltage scenario, and the solution can be realized by conventional components, thereby effectively saving the cost of battery management.
附图说明DRAWINGS
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. Other figures may also be obtained from those of ordinary skill in the art in view of these figures.
图1A~图1C为本申请实施例提供的电池管理系统的结构示意图;1A-1C are schematic structural diagrams of a battery management system according to an embodiment of the present application;
图2A~图2E为本申请实施例提供的电池管理系统中开关的结构示意图;2A-2E are schematic structural diagrams of a switch in a battery management system according to an embodiment of the present application;
图3A~图3C为本申请实施例提供的电池管理系统的电路示例图。3A-3C are diagrams showing examples of circuits of a battery management system according to an embodiment of the present application.
具体实施方式Detailed ways
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application are within the scope of the present disclosure.
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。下面结合附图,对本申请的一些实施方式作详细说明。在不冲突的情况下,下述的实施例及实施例中的特征可以相互组合。All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention applies, unless otherwise defined. The terminology used herein is for the purpose of describing particular embodiments, and is not intended to be limiting. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items. Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below can be combined with each other without conflict.
图1A为本申请实施例一提供的一种电池管理系统的结构示意图;参考附图1A可知,本实施例提供了一种电池管理系统,该电池管理系统用于实现高压场景下的电池管理,具体的,该电池管理系统包括:1A is a schematic structural diagram of a battery management system according to Embodiment 1 of the present application. Referring to FIG. 1A, the present embodiment provides a battery management system for implementing battery management in a high voltage scenario. Specifically, the battery management system includes:
目标回路对应的支路1、以及与支路1连接的升压泵2;其中,a branch circuit 1 corresponding to the target circuit and a booster pump 2 connected to the branch circuit 1; wherein
支路1连接在目标回路与升压泵2之间连接,升压泵2的输出端与目标回路的开关3连接;The branch 1 is connected between the target circuit and the booster pump 2, and the output of the booster pump 2 is connected to the switch 3 of the target circuit;
目标回路对应的支路1,用于监测目标回路中的电信号,当目标回路中的电信号满足预设的触发条件时,向升压泵2发送触发信号;The branch circuit corresponding to the target loop is used for monitoring the electrical signal in the target loop, and when the electrical signal in the target loop satisfies the preset trigger condition, the trigger signal is sent to the booster pump 2;
升压泵2,用于根据触发信号输出高压控制信号,高压控制信号用于控制目标回路的开关3关断。The booster pump 2 is configured to output a high voltage control signal according to the trigger signal, and the high voltage control signal is used to control the switch 3 of the target circuit to be turned off.
其中,目标回路连接在电池的正负极(B+/B-)和电池的正负接口(PACK+/PACK-)之间,电池管理系统通过采样目标回路中的电信号,能够对电池的正负极与正负极接口之间的电信号状态进行监测,以保证电池的安全使用。具体的,图中仅以开关的控制方式为正极关断进行举例,可以理解,在其它实施方式中还可以采用负极关断的方式实现控制,相应的,开关可以设置在电池负极B-与负极接口PACK-之间。另外,图中的支路采集的为电池负极B-与负极接口PACK-的电信号,其它实施方式中,支路也可以采集电池正极B+与正极接口PACK+之间的电信号,即连接至电池正极B+与正极接口PACK+之间。The target loop is connected between the positive and negative terminals (B+/B-) of the battery and the positive and negative interfaces of the battery (PACK+/PACK-). The battery management system can positively and negatively charge the battery by sampling the electrical signal in the target loop. The state of the electrical signal between the pole and the positive and negative interfaces is monitored to ensure safe use of the battery. Specifically, in the figure, only the control mode of the switch is used for the positive turn-off. It can be understood that in other embodiments, the negative turn-off mode can also be used to achieve the control. Accordingly, the switch can be disposed on the battery negative B- and the negative pole. Between interface PACK-. In addition, the branch in the figure collects the electrical signals of the battery negative B- and the negative interface PACK-. In other embodiments, the branch can also collect the electrical signal between the battery positive B+ and the positive interface PACK+, that is, connected to the battery. Between the positive B+ and the positive interface PACK+.
实际应用中,高压电池通常由多个电池串联组成,这些电池被称为电芯。电芯的正负极即为电池的正负极(B+/B-)。具体的,在电池使用时,需要与其它设备连接。举例来说,当需要对电池充电时,需要将电池与充电设备连接;当需要使用电池来供电时,需要将电池与用电设备连接。这就需要为电池引出与其它设备实现连接的接口,这些接口与电池的正负极连接。例如,电池的基础使用所需的正负极接口(PACK+/PACK-),具体的,当需要使用电池来供电时,即可以将用电设备的电源正极接口与电池的正极接口PACK+连接,将用电设备的电源负极接口与电池的负极接口PACK+连接,形成放电回路,实现电池对用电设备的供电。In practical applications, a high voltage battery is usually composed of a plurality of batteries connected in series, and these batteries are called batteries. The positive and negative poles of the battery are the positive and negative terminals (B+/B-) of the battery. Specifically, when the battery is used, it needs to be connected to other devices. For example, when the battery needs to be charged, the battery needs to be connected to the charging device; when it is necessary to use the battery to supply power, the battery needs to be connected to the powered device. This requires an interface for the battery to be connected to other devices that are connected to the positive and negative terminals of the battery. For example, the basic and negative interface (PACK+/PACK-) required for the basic use of the battery, specifically, when the battery needs to be used for power supply, the positive terminal of the power supply of the electrical device can be connected with the positive interface PACK+ of the battery, The negative pole of the power supply of the electrical equipment is connected to the negative interface PACK+ of the battery to form a discharge circuit, which realizes the power supply of the battery to the electrical equipment.
可选的,为了防止正极接口和负极接口之间直接导通造成的短路,如图 3A~图3C所示,可以在电池的正极接口PACK+和负极接口PACK-之间连接有第三二极管D2;第三二极管D2的正极与负极接口PACK-连接,第三二极管D2的负极与正极接口PACK+连接。Optionally, in order to prevent a short circuit caused by direct conduction between the positive terminal and the negative interface, as shown in FIG. 3A to FIG. 3C, a third diode may be connected between the positive terminal PACK+ and the negative interface PACK- of the battery. D2; the anode of the third diode D2 is connected to the cathode interface PACK-, and the cathode of the third diode D2 is connected to the anode interface PACK+.
其中,本方案的目标回路即为在电源的正负极与电源的正负极接口之间形成的回路,例如,充放电回路、预充电回路等。不同的回路设置有相应的开关,用于控制对相应回路的导通和切断。但由于实际应用中可能出现的各种情况,例如充放电短路、充电过压、放电欠压、过温欠温等,上述简单的电池结构无法保证电池的使用安全,因此需要在电池的正负极和正负极接口之间设置保护电路,即本方案提供的电池管理系统。The target loop of the solution is a loop formed between the positive and negative poles of the power source and the positive and negative terminals of the power source, for example, a charge and discharge loop, a precharge loop, and the like. Different circuits are provided with corresponding switches for controlling the conduction and disconnection of the respective circuits. However, due to various situations that may occur in practical applications, such as charge and discharge short circuit, charging overvoltage, discharge undervoltage, overtemperature and under temperature, etc., the above simple battery structure cannot guarantee the safety of the battery, and therefore the positive and negative of the battery is required. A protection circuit is provided between the pole and the positive and negative interfaces, that is, the battery management system provided by the solution.
具体的,本方案中为不同的目标回路配置有对应的支路,该支路用于对自身对应目标回路中的电信号进行监测,当检测到电信号满足预设的触发条件时,输出触发信号。由于本方案适用的场景为高压场景,因此需要较高电压的控制信号实现对目标回路的导通切断控制,对此,本方案中设置与不同目标回路对应的支路连接的升压泵。具体的,假设某目标回路对应的支路检测到该目标回路中的电信号满足预设的触发条件,则向升压泵发送触发信号,升压泵根据该支路发送的触发信号,向该支路对应的目标回路的开关输出高压控制信号,以控制该目标回路的开关关断,从而实现对该目标回路的保护。其中,升压泵用于对输入端接收的信号的电压进行提升后输出,其形式可以有多种,例如,升压芯片或者升压电路等。Specifically, in this solution, different target loops are configured with corresponding branches, which are used to monitor electrical signals in their corresponding target loops, and output triggers when the detected electrical signals satisfy the preset trigger conditions. signal. Since the scenario applicable to the solution is a high-voltage scenario, a higher voltage control signal is required to implement the on/off control of the target loop. In this solution, a booster pump connected to a branch corresponding to a different target loop is provided in the solution. Specifically, if a branch corresponding to a target loop detects that the electrical signal in the target loop satisfies a preset trigger condition, sending a trigger signal to the booster pump, and the boosting pump sends the trigger signal according to the branch to the The switch of the target circuit corresponding to the branch circuit outputs a high voltage control signal to control the switch of the target circuit to be turned off, thereby realizing protection of the target circuit. The booster pump is used for boosting the voltage of the signal received at the input end, and may be outputted in various forms, for example, a booster chip or a booster circuit.
需要说明的是,所述高压控制信号指的是,该控制信号的电压足够高以实现对高压场景下的开关控制,而控制信号的电平可以根据实际电路结构和开关的类型确定,举例来说,控制信号可以为高电平也可以为低电平。另外,开关控制的方式也可以有多种,例如,正极控制和负极控制等,具体方式可以根据实际电路中开关所在的位置和连接关系来确定。It should be noted that the high voltage control signal refers to that the voltage of the control signal is high enough to implement switching control in a high voltage scenario, and the level of the control signal can be determined according to the actual circuit structure and the type of the switch, for example. Said that the control signal can be high or low. In addition, there are various ways of switching control, for example, positive control and negative control, etc., and the specific manner can be determined according to the position and connection relationship of the switch in the actual circuit.
具体的,本方案中的目标回路包括但不限于充电回路、放电回路、预充电回路等。另外,本方案中的不同支路用于实现不同类型的电路保护,例如,短路保护、过压保护、欠压保护、过温保护和欠温保护等。本方案中,目标回路的开关可以由多种结构实现,以下通过举例进行示例:Specifically, the target circuits in the solution include, but are not limited to, a charging circuit, a discharging circuit, a pre-charging circuit, and the like. In addition, the different branches in this solution are used to implement different types of circuit protection, such as short circuit protection, over voltage protection, under voltage protection, over temperature protection and under temperature protection. In this solution, the switch of the target loop can be implemented by various structures. The following examples are exemplified by examples:
针对目标回路的开关结构,以对电池放电回路的开关进行正极控制为例,目标回路包括电池放电回路。具体的,电池放电回路的电信号流向为电池正 极(B+)→正极接口(PACK+)→负极接口(PACK-)→电池负极(B-)。相应的,本实施方式中设置有与电池放电回路对应的支路,即图中的电池放电回路控制支路,支路的类型可以根据需要确定,例如,可以为短路保护支路、过流保护支路等。可选的,如图2A所示,在任一实施方式的基础上,电池放电回路的开关31包括:For the switch structure of the target loop, taking the positive control of the switch of the battery discharge circuit as an example, the target circuit includes a battery discharge circuit. Specifically, the electrical signal flow direction of the battery discharge circuit is battery positive (B+)→positive interface (PACK+)→negative interface (PACK-)→battery negative (B-). Correspondingly, in the embodiment, a branch corresponding to the battery discharge circuit, that is, the battery discharge circuit control branch in the figure is provided, and the type of the branch can be determined according to requirements, for example, the short circuit protection branch and the overcurrent protection Branch road and so on. Optionally, as shown in FIG. 2A, on the basis of any of the embodiments, the switch 31 of the battery discharge circuit includes:
第一NMOS管Q3、第一放电电阻R10、第二放电电阻R5、第三放电电阻R6和第一稳压二极管ZD1;a first NMOS transistor Q3, a first discharge resistor R10, a second discharge resistor R5, a third discharge resistor R6 and a first Zener diode ZD1;
第一放电电阻R10的一端与升压泵2连接,第一放电电阻R10的另一端与第二放电电阻R5的一端、第三放电电阻R6的一端以及第一稳压二极管ZD1的负极连接;One end of the first discharge resistor R10 is connected to the booster pump 2, and the other end of the first discharge resistor R10 is connected to one end of the second discharge resistor R5, one end of the third discharge resistor R6, and a cathode of the first Zener diode ZD1;
第一NMOS管的栅极与第二放电电阻R5的另一端连接,第一NMOS管的源极与第三放电电阻R6的另一端、第一稳压二极管ZD1的正极以及电池的正极接口PACK+连接,第一NMOS管的漏极与电池正极B+连接。The gate of the first NMOS transistor is connected to the other end of the second discharge resistor R5, and the source of the first NMOS transistor is connected to the other end of the third discharge resistor R6, the anode of the first Zener diode ZD1, and the positive interface PACK+ of the battery. The drain of the first NMOS transistor is connected to the battery positive B+.
仍针对目标回路的开关结构,以对电池充电回路的开关进行正极控制为例,目标回路包括电池充电回路。相应的,需要在电池充电回路中串联有电池充电回路的开关。For the switch structure of the target loop, for example, the positive control of the switch of the battery charging circuit is taken as an example, and the target circuit includes a battery charging circuit. Accordingly, a switch having a battery charging circuit connected in series in the battery charging circuit is required.
作为一种实施方式,电池充电回路的开关可以与电池放电回路的开关集成,共用同一正极接口PACK+。具体的,电池充电回路的电信号流向为正极接口(PACK+)→电池正极(B+)→电池负极(B-)→负极接口(PACK-)。相应的,本实施方式中设置有与电池充电回路对应的支路,即图中的电池充电回路控制支路,支路的类型同样可以根据需要确定,例如,可以为短路保护支路、过流保护支路等,如图2B所示,在图2A所示实施方式的基础上,电池放电回路31的开关与电池正极B+之间连接有电池充电回路的开关32;电池充电回路的开关32包括:As an embodiment, the switch of the battery charging circuit can be integrated with the switch of the battery discharge circuit, sharing the same positive interface PACK+. Specifically, the electrical signal flow direction of the battery charging circuit is a positive interface (PACK+) → a battery positive (B+) → a battery negative (B-) → a negative interface (PACK-). Correspondingly, in this embodiment, a branch corresponding to the battery charging circuit, that is, the battery charging circuit control branch in the figure is provided, and the type of the branch can also be determined according to requirements, for example, the short circuit protection branch and the overcurrent Protection branch or the like, as shown in FIG. 2B, on the basis of the embodiment shown in FIG. 2A, a switch 32 of the battery charging circuit is connected between the switch of the battery discharge circuit 31 and the battery positive B+; the switch 32 of the battery charging circuit includes :
第二NMOS管Q2、第一充电电阻R8、第二充电电阻R4和第三充电电阻R3;a second NMOS transistor Q2, a first charging resistor R8, a second charging resistor R4 and a third charging resistor R3;
第一充电电阻R8的一端与升压泵2连接,第一充电电阻R8的另一端与第二充电电阻R4和第三充电电阻R3的一端连接;One end of the first charging resistor R8 is connected to the booster pump 2, and the other end of the first charging resistor R8 is connected to one end of the second charging resistor R4 and the third charging resistor R3;
第二NMOS管Q2的栅极与第二充电电阻R4的另一端连接,第二NMOS管的源极与第三充电电阻R3的另一端和电池正极B+连接,第二NMOS管 Q2的漏极与第一NMOS管Q3的漏极连接。The gate of the second NMOS transistor Q2 is connected to the other end of the second charging resistor R4, the source of the second NMOS transistor is connected to the other end of the third charging resistor R3 and the battery positive terminal B+, and the drain of the second NMOS transistor Q2 is The drain of the first NMOS transistor Q3 is connected.
作为另一种实施方式,电池充电回路的开关可以与电池放电回路的开关分开单独设置,为电池充电回路的开关配置专用的充电接口CHG。具体的,电池充电回路的电信号流向为充电接口(CHG)→电池正极(B+)→电池负极(B-)→负极接口(PACK-)。相应的,如图2C所示,在图2A所示实施方式的基础上,电池充电回路的开关32包括:As another embodiment, the switch of the battery charging circuit can be separately provided from the switch of the battery discharging circuit, and the dedicated charging interface CHG is configured for the switch of the battery charging circuit. Specifically, the electrical signal flow direction of the battery charging circuit is a charging interface (CHG)→battery positive (B+)→battery negative (B-)→negative interface (PACK-). Correspondingly, as shown in FIG. 2C, on the basis of the embodiment shown in FIG. 2A, the switch 32 of the battery charging circuit includes:
第三NMOS管Q4、第四充电电阻R54、第五充电电阻R59和第六充电电阻R53;a third NMOS transistor Q4, a fourth charging resistor R54, a fifth charging resistor R59 and a sixth charging resistor R53;
第四充电电阻R54的一端与升压泵2连接,第四充电电阻R54的另一端与第五充电电阻R59和第六充电电阻R53的一端连接;One end of the fourth charging resistor R54 is connected to the booster pump 2, and the other end of the fourth charging resistor R54 is connected to one end of the fifth charging resistor R59 and the sixth charging resistor R53;
第三NMOS管Q4的栅极与第五充电电阻R59的另一端连接,第三NMOS管Q4的源极与第六充电电阻R53的另一端和电池正极B+连接,第三NMOS管Q4的漏极与充电接口CHG连接。The gate of the third NMOS transistor Q4 is connected to the other end of the fifth charging resistor R59, the source of the third NMOS transistor Q4 is connected to the other end of the sixth charging resistor R53 and the battery positive terminal B+, and the drain of the third NMOS transistor Q4. Connected to the charging interface CHG.
另外,针对负极控制的情形,以对电池放电回路的开关进行负极控制为例,目标回路包括电池放电回路。可选的,如图2D所示,在任一实施方式的基础上,电池放电回路的开关31包括:第四NMOS管Q11和第四放电电阻R91;In addition, for the case of the negative control, taking the negative control of the switch of the battery discharge circuit as an example, the target circuit includes a battery discharge circuit. Optionally, as shown in FIG. 2D, on the basis of any embodiment, the switch 31 of the battery discharge circuit includes: a fourth NMOS transistor Q11 and a fourth discharge resistor R91;
第四NMOS管Q11的栅极与升压泵2和第四放电电阻R91的一端连接,第四NMOS管Q11的源极与电池负极B-和第四放电电阻R91的另一端连接,第四NMOS管Q11的漏极与电池的负极接口PACK-连接。The gate of the fourth NMOS transistor Q11 is connected to one end of the boost pump 2 and the fourth discharge resistor R91, and the source of the fourth NMOS transistor Q11 is connected to the other end of the battery negative B- and the fourth discharge resistor R91, and the fourth NMOS The drain of the transistor Q11 is connected to the negative interface PACK- of the battery.
仍作为负极控制下的一种实施方式,电池充电回路的开关可以与电池放电回路的开关集成,共用同一负极接口PACK-。可选的,如图2E所示,在图2D所示实施方式的基础上,电池放电回路31的开关与负极接口PACK-之间连接有电池充电回路的开关32;电池充电回路的开关32包括:Still as an embodiment under the control of the negative pole, the switch of the battery charging circuit can be integrated with the switch of the battery discharge circuit, sharing the same negative interface PACK-. Optionally, as shown in FIG. 2E, on the basis of the embodiment shown in FIG. 2D, a switch 32 of the battery charging circuit is connected between the switch of the battery discharge circuit 31 and the negative interface PACK-; the switch 32 of the battery charging circuit includes :
第五NMOS管Q10、第六NMOS管Q12、第七充电电阻R95、第八充电电阻R94、第九充电电阻R92、第二二极管D10和第二稳压管ZD3;a fifth NMOS transistor Q10, a sixth NMOS transistor Q12, a seventh charging resistor R95, an eighth charging resistor R94, a ninth charging resistor R92, a second diode D10 and a second Zener diode ZD3;
第六NMOS管Q12的栅极接地,第六NMOS管Q12的源极与第七充电电阻R95的一端连接;第六NMOS管Q12的漏极与升压泵连接;第七充电电阻R95的另一端与第八充电电阻R94的一端和第二二极管D10的正极连接;The gate of the sixth NMOS transistor Q12 is grounded, the source of the sixth NMOS transistor Q12 is connected to one end of the seventh charging resistor R95; the drain of the sixth NMOS transistor Q12 is connected to the boost pump; and the other end of the seventh charging resistor R95 Connecting with one end of the eighth charging resistor R94 and the anode of the second diode D10;
第八充电电阻R94的另一端与第九充电电阻R92的一端、第二二极管 D10的负极以及第二稳压管ZD3的负极连接;The other end of the eighth charging resistor R94 is connected to one end of the ninth charging resistor R92, the cathode of the second diode D10, and the cathode of the second Zener diode ZD3;
第五NMOS管的栅极与第八充电电阻R94的另一端连接,第五NMOS管的源极与第九充电电阻R92的另一端、第二稳压管ZD3的正极以及电池的负极接口PACK-连接,第五NMOS管的漏极与第四NMOS管Q11的漏极连接。The gate of the fifth NMOS transistor is connected to the other end of the eighth charging resistor R94, the source of the fifth NMOS transistor and the other end of the ninth charging resistor R92, the anode of the second Zener diode ZD3, and the negative interface of the battery PACK- Connected, the drain of the fifth NMOS transistor is connected to the drain of the fourth NMOS transistor Q11.
具体的,本方案中MOS管的类型可以根据实际电路确定,可选的,可以为增强型MOS管。此外,除了充放电回路,实际应用中,为了提高电池的使用寿命,通常还会涉及到电池的预充电过程,因此本方案针对预充电回路同样提供电池管理。相应的,目标回路还包括预充电回路,具体的,由于预充电回路与电池充电回路共用回路,电信号的流向也相同,区别仅在于本方案中预充电回路有自己对应的开关,相应的,针对预充电回路的不同类型的电池管理,可以通过不同类型的支路控制预充电回路的开关实现。本方案中,针对同一类型的支路,预充电回路与电池充电回路对应同一支路,以短路保护支路为例,预充电回路对应的短路保护支路与电池充电回路对应的短路保护支路为同一支路。Specifically, the type of the MOS tube in the solution may be determined according to an actual circuit, and may be an enhanced MOS tube. In addition, in addition to the charging and discharging circuit, in practical applications, in order to improve the service life of the battery, the pre-charging process of the battery is usually involved, so the solution also provides battery management for the pre-charging circuit. Correspondingly, the target circuit further includes a pre-charging circuit. Specifically, since the pre-charging circuit and the battery charging circuit share a loop, the flow direction of the electric signal is also the same, and the difference is only that the pre-charging circuit has its own corresponding switch in the present scheme, correspondingly, Different types of battery management for the pre-charging circuit can be implemented by different types of branches controlling the switches of the pre-charging circuit. In this solution, for the same type of branch, the pre-charging circuit and the battery charging circuit correspond to the same branch, taking the short-circuit protection branch as an example, the short-circuit protection branch corresponding to the pre-charging circuit and the short-circuit protection branch corresponding to the battery charging circuit For the same branch.
可选的,针对预充电回路的开关,在一种实施方式中,在与电池充电回路相关的任一实施方式的基础上,如图2B所示,预充电回路的开关33包括:Optionally, for the switch of the pre-charging circuit, in one embodiment, based on any of the embodiments related to the battery charging circuit, as shown in FIG. 2B, the switch 33 of the pre-charging circuit includes:
第一PMOS管Q1、第一预充电电阻R9、第二预充电电阻R2和第三预充电电阻R1;a first PMOS transistor Q1, a first pre-charge resistor R9, a second pre-charge resistor R2 and a third pre-charge resistor R1;
第一预充电电阻R9的一端与升压泵2连接;One end of the first pre-charging resistor R9 is connected to the booster pump 2;
第一PMOS管Q1的栅极与第一预充电电阻R9的另一端和第二预充电电阻R2的一端连接,第一PMOS管Q1的源极与第一NMOS管Q3的漏极和第二预充电电阻R2的另一端连接,第一PMOS管Q1的漏极与第三预充电电阻R1的一端连接;The gate of the first PMOS transistor Q1 is connected to the other end of the first pre-charge resistor R9 and one end of the second pre-charge resistor R2, the source of the first PMOS transistor Q1 and the drain of the first NMOS transistor Q3 and the second pre- The other end of the charging resistor R2 is connected, and the drain of the first PMOS transistor Q1 is connected to one end of the third pre-charging resistor R1;
第三预充电电阻R1的另一端与电池充电回路的开关32中NMOS管的源极连接。The other end of the third pre-charging resistor R1 is connected to the source of the NMOS transistor in the switch 32 of the battery charging circuit.
具体的,本实施方式提供的预充电回路的开关与电池充电回路的开关之间的连接关系,既可以适用于共用负极接口PACK-的情形(参见图2B或图3A),也可以适用于分别对应单独接口的情形(参见图2C或图3C)。Specifically, the connection relationship between the switch of the pre-charging circuit and the switch of the battery charging circuit provided by the embodiment can be applied to the case of sharing the negative interface PACK- (see FIG. 2B or FIG. 3A), and can also be applied to respectively. Corresponding to the case of a separate interface (see Figure 2C or Figure 3C).
需要说明的是,上述实施方式仅是为目标回路的开关结构进行的举例说 明,其它能够实现对目标回路导通和切断控制的开关结构也可应用于本方案。实际应用中,单个目标回路的开关数量可以为多个,这多个开关可以采用并联的连接方式。It should be noted that the above embodiment is merely an example of the switching structure of the target circuit, and other switch structures capable of achieving conduction and disconnection control of the target circuit are also applicable to the present embodiment. In practical applications, the number of switches of a single target loop can be multiple, and the multiple switches can be connected in parallel.
此外,为了实现电路中的信号优化,还可以设置不同的优化电路。上述各模块电路也可以通过多种具体电路实现。例如,所述电池管理系统还可以包括:第六电阻R15和第二电容C5;其中,In addition, different optimization circuits can be set up to achieve signal optimization in the circuit. Each of the above module circuits can also be implemented by a plurality of specific circuits. For example, the battery management system may further include: a sixth resistor R15 and a second capacitor C5; wherein
第六电阻R15的一端与第二电容C5的一端和升压泵2连接,第六电阻R15的另一端与电池的正极接口PACK+连接;One end of the sixth resistor R15 is connected to one end of the second capacitor C5 and the booster pump 2, and the other end of the sixth resistor R15 is connected to the positive interface PACK+ of the battery;
第二电容C5的另一端接地。The other end of the second capacitor C5 is grounded.
具体的,以升压泵型号为BQ76200为例,第六电阻R15的一端可以与升压泵的第11管脚,即PACK管脚连接。通过设置本实施方式的电路,能够有效过滤干扰信号,提高电池管理的可靠性。Specifically, taking the booster pump model as BQ76200 as an example, one end of the sixth resistor R15 can be connected to the 11th pin of the booster pump, that is, the PACK pin. By providing the circuit of the present embodiment, it is possible to effectively filter the interference signal and improve the reliability of battery management.
实际应用中,用于实现目标回路电信号监测的支路可以通过多种电路结构实现。可选的,如图1B所示,在实施例一的基础上,支路1可以包括:信号采样电路11、信号放大电路12、以及信号处理电路13;其中,In practical applications, the branch used to achieve the target loop electrical signal monitoring can be realized by various circuit structures. Optionally, as shown in FIG. 1B, on the basis of the first embodiment, the branch 1 may include: a signal sampling circuit 11, a signal amplifying circuit 12, and a signal processing circuit 13;
信号采样电路11连接在目标回路与信号放大电路12的输入端之间,信号放大电路12的输出端与信号处理电路13的输入端连接,信号处理电路13的输出端与升压泵2连接;The signal sampling circuit 11 is connected between the target circuit and the input end of the signal amplifying circuit 12, the output end of the signal amplifying circuit 12 is connected to the input end of the signal processing circuit 13, and the output end of the signal processing circuit 13 is connected to the booster pump 2;
信号采样电路11,用于对目标回路中的电信号进行采样;a signal sampling circuit 11 for sampling an electrical signal in the target loop;
信号放大电路12,用于对信号采样电路11采样的电信号进行放大,并将放大后的电信号输出给信号处理电路13;The signal amplifying circuit 12 is configured to amplify the electrical signal sampled by the signal sampling circuit 11 and output the amplified electrical signal to the signal processing circuit 13;
信号处理电路13,用于当检测到接收到的电信号满足预设的触发条件时,向升压泵2发送触发信号。The signal processing circuit 13 is configured to send a trigger signal to the booster pump 2 when detecting that the received electrical signal satisfies a preset trigger condition.
具体的,某目标回路对应的支路的信号采样电路11对目标回路中的电信号进行采样,信号放大电路12对信号采样电路11采样获得的电信号进行放大,并将放大后的电信号传输给信号处理电路13,信号处理电路13接收到来自信号放大电路12传输来的电信号后,检测该电信号是否满足预设的触发条件,这里的触发条件可以根据不同的保护功能确定,例如,对于短路保护可以将对应的触发条件设定为电信号大小大于预设的阈值;对于过压保护可 以将对应的触发条件设定为电芯电压超过预设的上限阈值等。信号处理电路13检测到电信号满足触发条件时,则说明需要对当前目标回路进行保护,相应的,信号处理电路13会向升压泵发送触发信号,升压泵根据接收到的触发信号,向该目标回路的开关发送高压控制信号,以切断该目标回路,实现保护。Specifically, the signal sampling circuit 11 of the branch corresponding to a target loop samples the electrical signal in the target loop, and the signal amplifying circuit 12 amplifies the electrical signal sampled by the signal sampling circuit 11 and transmits the amplified electrical signal. After the signal processing circuit 13 receives the electrical signal transmitted from the signal amplifying circuit 12, the signal processing circuit 13 detects whether the electrical signal satisfies a preset trigger condition, and the trigger condition here can be determined according to different protection functions, for example, For the short circuit protection, the corresponding trigger condition can be set to the electrical signal size greater than the preset threshold; for the overvoltage protection, the corresponding trigger condition can be set to the cell voltage exceeding the preset upper threshold. When the signal processing circuit 13 detects that the electrical signal meets the trigger condition, it indicates that the current target circuit needs to be protected. Correspondingly, the signal processing circuit 13 sends a trigger signal to the boosting pump, and the boosting pump according to the received trigger signal The switch of the target loop sends a high voltage control signal to cut off the target loop for protection.
其中,所述信号放大电路的结构可以有多种,例如,所述信号放大电路包括但不限于放大器、放大集成电路(Integrated Circuit,简称IC)等。不同类型的支路中采用的信号放大电路也可以不同。所述升压泵的信号也可以根据需要选择,例如,型号为BQ76200的升压泵。The signal amplifying circuit can be configured in various forms. For example, the signal amplifying circuit includes, but is not limited to, an amplifier, an integrated circuit (IC), and the like. The signal amplifying circuits used in different types of branches can also be different. The boost pump signal can also be selected as desired, for example, a booster pump of the type BQ76200.
通过本实施方式,能够实现支路对目标回路中电信号的监测,当满足触发条件时,触发升压泵向目标回路的开关发送高压控制信号,以及时切断目标回路,实现电池管理。According to the embodiment, the branch can monitor the electrical signal in the target loop. When the trigger condition is met, the booster pump is triggered to send a high-voltage control signal to the switch of the target loop, and the target loop is cut off to realize battery management.
优选的,针对不同类型的电路保护,还可以考虑相应的延时保护方案,以提高电池管理的稳定性和可靠性。Preferably, for different types of circuit protection, a corresponding delay protection scheme may also be considered to improve the stability and reliability of battery management.
具体的,针对短路保护,由于短路对电池造成的损伤较为严重,因此可以设定低延时保护。对于其它保护,例如,过压、欠压、过温、欠温保护等,由于其造成的影响较小,并且有时也可能存在误保护的情形,因此,可以设定高延时保护。相应的,如图1C所示,在图1B所示实施方式的基础上,支路1还包括:Specifically, for short-circuit protection, the damage caused by the short circuit to the battery is serious, so low-latency protection can be set. For other protections, such as overvoltage, undervoltage, overtemperature, undertemperature protection, etc., because of the small impact, and sometimes there may be cases of false protection, high-latency protection can be set. Correspondingly, as shown in FIG. 1C, on the basis of the embodiment shown in FIG. 1B, the branch 1 further includes:
连接在信号采样电路11与信号处理电路13之间的延时电路14;a delay circuit 14 connected between the signal sampling circuit 11 and the signal processing circuit 13;
延时电路14,用于将接收到的电信号经延时后传输给信号处理电路13。The delay circuit 14 is configured to transmit the received electrical signal to the signal processing circuit 13 after being delayed.
其中,延时电路的电路结构可以有多种,例如,RC延时电路等。具体的,某目标回路对应的支路中,在电信号自信号采样电路11开始传输后,且在信号处理电路13接收到电信号之前,连接在信号采样电路11与信号处理电路13之间的延时电路14会对自身接收到的电信号进行延时传输,即将自身接收到的电信号经过一定的延时时间后传输至下一电路。Among them, the circuit structure of the delay circuit can be various, for example, an RC delay circuit. Specifically, a branch corresponding to a target loop is connected between the signal sampling circuit 11 and the signal processing circuit 13 after the electrical signal is transmitted from the signal sampling circuit 11 and before the signal processing circuit 13 receives the electrical signal. The delay circuit 14 delays the transmission of the electrical signal received by itself, that is, the electrical signal received by itself is transmitted to the next circuit after a certain delay time.
通过设定延时保护,既可避免因电信号在短时内大幅变化带来的不良影响,另外对于一些可以在短时内消除的触发条件,通过设定延时保护还可以避免误保护,保证电池使用的稳定性。By setting the delay protection, it can avoid the adverse effects caused by the large changes of the electrical signal in a short period of time. In addition, for some trigger conditions that can be eliminated in a short time, the delay protection can also be avoided to avoid false protection. Ensure the stability of battery use.
本实施例提供的基于升压泵的电池管理系统,包括针对不同目标回路的 支路,以及与不同目标回路的支路连接的升压泵,具体的,该支路执行在监测到目标回路中的电信号满足预设的触发条件时,向升压泵发送触发信号,升压信号基于触发信号输出高压控制信号,以控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的保护和维护。可以理解,通过升压泵根据接收到的触发信号能够输出电压较高的控制信号,从而实现高压场景下的电池管理,并且本方案能够通过常规元器件实现,因此能够有效节省电池管理的成本。The boost pump-based battery management system provided by this embodiment includes a branch for different target circuits and a boost pump connected to a branch of a different target circuit. Specifically, the branch is executed in the target loop. When the electrical signal meets the preset trigger condition, the trigger signal is sent to the booster pump, and the boost signal outputs a high voltage control signal based on the trigger signal to control the switch of the target circuit to be turned off, thereby cutting off the target loop and realizing the target loop. Protection and maintenance. It can be understood that the boosting pump can output a high voltage control signal according to the received trigger signal, thereby realizing battery management in a high voltage scenario, and the solution can be realized by conventional components, thereby effectively saving the cost of battery management.
具体的,如上述实施例所说的,不同的支路能够实现不同类型的电池管理。下面结合说明书附图对本方案提供的电池管理系统中不同目标回路对应的不同支路进行示例说明,可以理解,不同类型支路对应的实施方式可以单独实施也可以结合实施:Specifically, as described in the above embodiments, different branches can implement different types of battery management. The different branches corresponding to different target circuits in the battery management system provided by the present solution are exemplified in the following with reference to the accompanying drawings. It can be understood that the corresponding implementation manners of different types of branches can be implemented separately or in combination:
实际应用中,可以对电池进行短路保护。针对短路保护,在一种实施方式中,支路1可以包括短路保护支路,具体的,目标回路的短路保护支路用于监测该目标回路是否发生短路,并且,针对短路保护可以设定短时延保护。优选的,在图1C所示实施方式的基础上:In practical applications, the battery can be short-circuit protected. For short-circuit protection, in one embodiment, the branch 1 may comprise a short-circuit protection branch. Specifically, the short-circuit protection branch of the target loop is used to monitor whether the target loop is short-circuited, and the short-circuit protection can be set short. Delay protection. Preferably, based on the embodiment shown in Figure 1C:
短路保护支路的信号处理电路为比较器,短路保护支路的信号放大电路的输出端与比较器的同相输入端连接;短路保护支路的延时电路为RC延时电路;The signal processing circuit of the short circuit protection branch is a comparator, and the output end of the signal amplifying circuit of the short circuit protection branch is connected with the non-inverting input end of the comparator; the delay circuit of the short circuit protection branch is an RC delay circuit;
比较器,具体用于当检测到同相输入端接收的电信号高于反向输入端接收的基准信号时,向升压泵发送触发信号。The comparator is specifically configured to send a trigger signal to the booster pump when detecting that the electrical signal received by the non-inverting input is higher than the reference signal received by the inverting input.
具体的,信号采样电路采集目标回路的电流信号,然后通过信号放大电路(例如,放大器U3A和U3C)把信号放大,再通过比较器将放大后的信号与预设的基准信号进行比较,如果信号超过基准信号就对外输出触发信号给升压泵,该触发信号可以为高电平信号,最后升压泵基于该触发信号完成将目标回路的开关关断。通过以上一系列流程达到短路保护的目的。本实施方式中,采用由硬件电路搭建的延时电路,能够适用于短路保护这种微秒(μs)级别的保护处理,在实现短路保护的基础上,进一步实现延时保护。Specifically, the signal sampling circuit collects the current signal of the target loop, and then amplifies the signal through a signal amplifying circuit (for example, amplifiers U3A and U3C), and then compares the amplified signal with a preset reference signal through a comparator, if the signal When the reference signal is exceeded, the trigger signal is externally outputted to the boosting pump, and the triggering signal can be a high level signal. Finally, the boosting pump completes the switching of the target loop based on the triggering signal. Through the above series of processes, the purpose of short circuit protection is achieved. In the present embodiment, the delay circuit constructed by the hardware circuit is adopted, which can be applied to the microsecond (μs) level protection processing of the short circuit protection, and further realizes the delay protection on the basis of the short circuit protection.
其中,延时保护的时间可以根据实际电路结构和保护需要设定。延时保护的时间也可以通过调整延时电路的数量来进行调整。优选的,在一种实施 方式中,延时电路可以包括:Among them, the time of delay protection can be set according to the actual circuit structure and protection needs. The delay protection time can also be adjusted by adjusting the number of delay circuits. Preferably, in an implementation manner, the delay circuit may include:
连接在信号放大电路和比较器之间的第一延时电路、以及连接在比较器和升压泵之间的第二延时电路;其中,a first delay circuit connected between the signal amplifying circuit and the comparator, and a second delay circuit connected between the comparator and the boosting pump; wherein
第一延时电路包括第一延时电阻和第一延时电容,第一延时电阻的一端与信号放大电路的输出端连接,第一延时电阻的另一端与第一延时电容的一端和比较器的同相输入端连接,第一延时电容的另一端接地;The first delay circuit includes a first delay resistor and a first delay capacitor. One end of the first delay resistor is connected to the output end of the signal amplifying circuit, and the other end of the first delay resistor and one end of the first delay capacitor Connected to the non-inverting input of the comparator, and the other end of the first delay capacitor is grounded;
第二延时电路包括第二延时电阻和第二延时电容,第二延时电阻的一端与比较器的输出端连接,第二延时电阻的另一端与第二延时电容的一端和升压泵连接,第二延时电容的另一端接地。The second delay circuit includes a second delay resistor and a second delay capacitor. One end of the second delay resistor is connected to the output end of the comparator, and the other end of the second delay resistor is connected to one end of the second delay capacitor. The booster pump is connected, and the other end of the second delay capacitor is grounded.
具体的,信号采样电路11采集目标回路的电流信号,然后通过信号放大电路12把信号放大,经第一延时电路延时传输给比较器与预设的基准信号进行比较,如果信号超过基准信号,比较器13对外输出触发信号,该触发信号经第二延时电路再次延时传输给升压泵2,最后升压泵2基于接收到的触发信号完成将目标回路的开关关断。本实施方式中通过设置多级延时,能够实现对延时时间的精确控制。Specifically, the signal sampling circuit 11 collects the current signal of the target loop, and then amplifies the signal through the signal amplifying circuit 12, and transmits the delay to the comparator through the first delay circuit to compare with the preset reference signal, if the signal exceeds the reference signal. The comparator 13 outputs a trigger signal to the booster pump 2, and the booster pump 2 turns off the switch of the target loop based on the received trigger signal. In the embodiment, by setting a multi-level delay, accurate control of the delay time can be achieved.
可以理解,支路中延时电路的数量可以为一个也可以为多个,具体的,在支路中设置多个延时电路可以实现多级延时。本实施方式,通过在短路保护支路上设置多级延时电路,便于调整延时时间,实现延时时间的精确控制,提高短路保护的可靠性。It can be understood that the number of delay circuits in the branch can be one or more. Specifically, multiple delay circuits can be implemented in the branch to implement multi-level delay. In this embodiment, by setting a multi-stage delay circuit on the short-circuit protection branch, it is convenient to adjust the delay time, realize precise control of the delay time, and improve the reliability of the short-circuit protection.
进一步优选的,为了防止信号逆流产生的不利影响,还可以在比较器和第二延时电路之间连接第一二极管;其中,第一二极管的正极与比较器的输出端连接,第一二极管的负极与第二延时电阻的一端连接。Further preferably, in order to prevent the adverse effect of the signal reverse current, a first diode may be connected between the comparator and the second delay circuit; wherein the anode of the first diode is connected to the output end of the comparator, The cathode of the first diode is connected to one end of the second time delay resistor.
此外,针对短路保护,信号采样的方式也可以有多种。优选的,在前述与短路保护支路相关的任一实施方式的基础上,短路保护支路的信号采样电路11包括第一电阻和第二电阻;其中,In addition, for short-circuit protection, there are many ways to sample the signal. Preferably, based on any of the foregoing embodiments related to the short circuit protection branch, the signal sampling circuit 11 of the short circuit protection branch includes a first resistor and a second resistor;
第一电阻串联在目标回路中;The first resistor is connected in series in the target loop;
第二电阻的一端与第一电阻先接收到目标回路中电信号的一端连接,第二电阻的另一端与信号放大电路的输入端连接。One end of the second resistor is connected to one end of the first resistor that receives the electrical signal in the target loop, and the other end of the second resistor is connected to the input end of the signal amplifying circuit.
具体的,不同目标回路中的电信号流向可能不同。以充电回路和放电回路为例,这两者的电信号流向相反。因此,本实施方式中,基于目标回路中 电信号的流向确定第二电阻的连接位置,实现对目标回路中电信号的采样。Specifically, the flow of electrical signals in different target loops may be different. Taking the charging circuit and the discharging circuit as an example, the electrical signals of the two flow in opposite directions. Therefore, in the present embodiment, the connection position of the second resistor is determined based on the flow direction of the electric signal in the target circuit, and sampling of the electric signal in the target loop is realized.
本实施方式中的信号采样电路,能够实现短路保护下的电信号采样,并且电路结构简单,集成度高。The signal sampling circuit in the embodiment can realize electrical signal sampling under short-circuit protection, and has a simple circuit structure and high integration.
需要说明的是,本实施例中的短路保护支路可以针对不同的目标回路进行设置。例如,可以设置电池充电回路对应的短路保护支路,在目标回路包括预充电回路时,预充电回路与电池充电回路对应的短路保护支路为同一短路保护支路。另外,还可以设置电池放电回路对应的短路保护支路,在不冲突的前提下,不同目标回路的不同类型的支路对应的实施方式可以单独实施也可以结合实施。It should be noted that the short circuit protection branch in this embodiment can be set for different target circuits. For example, a short circuit protection branch corresponding to the battery charging circuit may be set. When the target circuit includes a pre-charging circuit, the short-circuit protection branch corresponding to the pre-charging circuit and the battery charging circuit is the same short-circuit protection branch. In addition, the short-circuit protection branch corresponding to the battery discharge circuit can also be set, and the implementation manners corresponding to different types of branches of different target circuits can be implemented separately or in combination without conflict.
本实施例提供的电池管理系统,包括目标回路对应的短路保护支路,以及与短路保护支路连接的升压泵,具体的,某目标回路的短路保护支路执行在监测到目标回路中的电信号超过预设的基准信号时,向升压泵发送触发信号,升压信号基于触发信号输出高压控制信号,控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的短路保护,进而实现高压场景下的电池管理。The battery management system provided in this embodiment includes a short circuit protection branch corresponding to the target circuit and a boost pump connected to the short circuit protection branch. Specifically, the short circuit protection branch of a target circuit is executed in the target circuit. When the electrical signal exceeds the preset reference signal, the trigger signal is sent to the boosting pump, and the boosting signal outputs a high-voltage control signal based on the trigger signal to control the switch of the target circuit to be turned off, thereby cutting off the target circuit and short-circuiting the target circuit. Protection, which in turn enables battery management in high voltage scenarios.
实际应用中,还可以对电池进行过流保护。针对过流欠流保护,在一种实施方式中,支路1可以包括过流保护支路,具体的,目标回路的过流保护支路用于监测该目标回路中的电流大小是否过大,并且,针对过流保护支路可以设定高延时保护,这里的高延时是相对短路保护的低延时来说的。优选的,在任一实施方式的基础上:In practical applications, the battery can also be over-current protected. For an overcurrent undercurrent protection, in one embodiment, the branch 1 may include an overcurrent protection branch. Specifically, the overcurrent protection branch of the target loop is used to monitor whether the current in the target loop is too large. Moreover, high-latency protection can be set for the overcurrent protection branch, where the high delay is relative to the low delay of the short-circuit protection. Preferably, based on any of the embodiments:
过流保护支路的信号处理电路为微处理器;The signal processing circuit of the overcurrent protection branch is a microprocessor;
过流保护支路的信号采样电路包括:第三电阻、第四电阻、第五电阻以及第一电容;第三电阻串联在目标回路中;第四电阻的一端连接第三电阻的一端;第五电阻的一端连接第三电阻的另一端;The signal sampling circuit of the overcurrent protection branch includes: a third resistor, a fourth resistor, a fifth resistor, and a first capacitor; the third resistor is connected in series in the target loop; one end of the fourth resistor is connected to one end of the third resistor; One end of the resistor is connected to the other end of the third resistor;
过流保护支路的信号放大电路包括:第一信号放大电路和第二信号放大电路;第四电阻的另一端与第一信号放大电路的输入端和第一电容的一端连接;第五电阻的另一端与第二信号放大电路的输入端和第一电容的另一端连接;第一信号放大电路和第二信号放大电路的输出端与微处理器连接;The signal amplifying circuit of the overcurrent protection branch includes: a first signal amplifying circuit and a second signal amplifying circuit; the other end of the fourth resistor is connected to the input end of the first signal amplifying circuit and one end of the first capacitor; the fifth resistor The other end is connected to the input end of the second signal amplifying circuit and the other end of the first capacitor; the output ends of the first signal amplifying circuit and the second signal amplifying circuit are connected to the microprocessor;
微处理器,具体用于根据第一信号放大电路和第二信号放大电路输出的 电信号,当检测到目标回路中的电流大小超过预设的阈值时,向升压泵发送触发信号。The microprocessor is specifically configured to send a trigger signal to the booster pump when detecting that the magnitude of the current in the target loop exceeds a preset threshold according to the electrical signals output by the first signal amplifying circuit and the second signal amplifying circuit.
具体的,信号采样电路11采集第三电阻两端的电压,然后分别通过第一信号放大电路和第二信号放大电路将信号以一定的放大倍数放大后(为了匹配微处理器,放大后的信号不能超过微处理器的供电电压,例如,3.3V),传输给微处理器;微处理器把两个放大后的信号的差值再除以第三电阻的电阻值就可得到目标回路的电流大小,具体的,差值的正负还可以标示电流的流向,以确定当前的目标回路,进而确定需要控制的开关。举例来说,如果微处理器计算出目标回路中的电流大小超过预设的阈值,则经过延时之后微处理器输出触发信号给升压泵,进而关断目标回路的开关,达到过流保护的目的。Specifically, the signal sampling circuit 11 collects the voltage across the third resistor, and then amplifies the signal by a certain amplification factor through the first signal amplifying circuit and the second signal amplifying circuit respectively (in order to match the microprocessor, the amplified signal cannot be The power supply voltage exceeding the microprocessor, for example, 3.3V, is transmitted to the microprocessor; the microprocessor divides the difference between the two amplified signals by the resistance value of the third resistor to obtain the current of the target loop. Specifically, the positive and negative of the difference can also indicate the flow direction of the current to determine the current target loop, thereby determining the switch that needs to be controlled. For example, if the microprocessor calculates that the current in the target loop exceeds a preset threshold, the microprocessor outputs a trigger signal to the boost pump after the delay, thereby turning off the switch of the target loop to achieve overcurrent protection. the goal of.
其中,微处理器可以为单片机。基于上述原理,微处理器还可以控制预充电电路的导通和切断,以型号为BQ76200的升压泵举例来说:当需要进行预充电时,微处理器向升压泵的第8管脚(PCHG_EN管脚)发送导通触发信号,该导通触发信号可以为低电平信号,相应的,升压泵的第14管脚(PCHG管脚)会输出低电平信号,该低电平信号为高压信号,具体的,PCHG管脚与预充电回路的开关连接,从而控制预充电回路的开关打开,进行预充电。当需要关闭预充电时,微处理器则向升压泵的PCHG_EN管脚发出相反的切断触发信号,例如,一个高电平信号,从而控制预充电回路的开关关断,从而关闭预充电。本实施方式中,由于微处理器本身的信号处理即存在一定的延迟,因此,微处理器本身即可作为信号处理电路与延时电路的集成,采用微处理器,能够适用于充放电过流、充电过压、放电欠压、过温欠温等这种秒(s)级别的保护处理,能够采用较少的元件即可实现电路保护和延时保护,减小电池管理系统的体积。Among them, the microprocessor can be a single chip microcomputer. Based on the above principle, the microprocessor can also control the on and off of the precharge circuit. For example, the booster pump of the type BQ76200: when the precharge is required, the microprocessor goes to the 8th pin of the booster pump. (PCHG_EN pin) sends a conduction trigger signal, the conduction trigger signal can be a low level signal, and correspondingly, the 14th pin (PCHG pin) of the boost pump outputs a low level signal, the low level The signal is a high voltage signal. Specifically, the PCHG pin is connected to the switch of the pre-charging circuit, thereby controlling the opening of the pre-charging circuit to perform pre-charging. When the pre-charge needs to be turned off, the microprocessor sends an opposite turn-off trigger signal to the PCHG_EN pin of the boost pump, for example, a high level signal, thereby controlling the switch-off of the pre-charge loop to turn off the pre-charge. In the present embodiment, since the signal processing of the microprocessor itself has a certain delay, the microprocessor itself can be integrated as a signal processing circuit and a delay circuit, and the microprocessor can be applied to charge and discharge overcurrent. The second (s) level of protection processing such as charging overvoltage, discharge undervoltage, overtemperature and under temperature can realize circuit protection and delay protection with fewer components, and reduce the size of the battery management system.
需要说明的是,本实施例中的过流保护支路同样可以针对不同的目标回路进行设置。例如,可以设置电池充电回路对应的过流保护支路,还可以设置电池放电回路对应的过流保护支路,在一种实施方式中,电池充电回路和电池放电回路可以共用同一过流保护支路,以提高电路集成度,减小电池管理系统的体积。在不冲突的前提下,不同目标回路的不同类型的支路对应的实施方式可以单独实施也可以结合实施。It should be noted that the overcurrent protection branch in this embodiment can also be set for different target circuits. For example, an overcurrent protection branch corresponding to the battery charging circuit may be set, and an overcurrent protection branch corresponding to the battery discharge circuit may be provided. In an embodiment, the battery charging circuit and the battery discharging circuit may share the same overcurrent protection branch. Road to improve circuit integration and reduce the size of the battery management system. The implementations of different types of branches of different target circuits may be implemented separately or in combination without conflict.
此外,基于微处理器,还能够实现对目标回路的充电过压、放电欠压、以及过温欠温保护。In addition, based on the microprocessor, it is also possible to achieve charging overvoltage, discharge undervoltage, and overtemperature undertemperature protection for the target loop.
针对过温欠温保护,前述的微处理器,还可以用于当检测到目标回路中的电芯温度超过预设的范围时,向所述升压泵发送触发信号。具体的,微处理器中可以集成有温度传感器,该温度传感器可以采集电池的电芯温度,微处理器根据采集获得的电芯温度,当该电芯温度超过一定的范围,例如,低于预设的温度下限值,或者高于预设的温度上限值时,向升压泵发送触发信号,以关断当前目标回路的开关。For the over-temperature and under-temperature protection, the aforementioned microprocessor can also be used to send a trigger signal to the booster pump when it is detected that the cell temperature in the target loop exceeds a preset range. Specifically, the temperature sensor may be integrated in the microprocessor, and the temperature sensor may collect the battery core temperature, and the microprocessor according to the temperature of the battery core obtained by the acquisition, when the temperature of the battery exceeds a certain range, for example, lower than the pre- When the lower temperature limit is set, or higher than the preset upper temperature limit, a trigger signal is sent to the booster pump to turn off the switch of the current target loop.
实际应用中,各目标回路都可能存在过温欠温的问题,因此,当微处理器检测到电芯温度超出预设的范围时,可通过信号采样电路检测出当前的目标回路,例如,当前目标回路可以为电池充电回路、电池放电回路等,进而确定需要关断的开关。In practical applications, there may be problems of over temperature and under temperature in each target loop. Therefore, when the microprocessor detects that the cell temperature is outside the preset range, the current target loop can be detected by the signal sampling circuit, for example, current The target loop can be a battery charging circuit, a battery discharge circuit, etc., to determine the switch that needs to be turned off.
通过本实施方式,能够实现高压场景下的过温欠温保护等电池管理,并且电路结构简单,成本较小。According to the present embodiment, battery management such as over-temperature and under-temperature protection in a high-voltage scene can be realized, and the circuit configuration is simple and the cost is small.
另外,针对充电过压保护,由于过压问题仅存在于充电的情形,因此,相应的,目标回路包括电池充电回路。前述的微处理器U2,还可以用于当检测到充电回路中的电芯电压超过预设的上限阈值时,向所述升压泵发送触发信号。针对放电欠压保护,同样的,欠压问题仅存在于放电的情形,因此,相应的,目标回路包括电池放电回路。前述的微处理器,还可以用于当检测到放电回路中的电芯电压低于预设的下限阈值时,向所述升压泵发送触发信号。In addition, for the charging overvoltage protection, since the overvoltage problem only exists in the case of charging, accordingly, the target circuit includes a battery charging circuit. The aforementioned microprocessor U2 can also be configured to send a trigger signal to the booster pump when it is detected that the cell voltage in the charging circuit exceeds a preset upper threshold. For the discharge undervoltage protection, similarly, the undervoltage problem exists only in the case of discharge, and accordingly, the target loop includes a battery discharge loop. The aforementioned microprocessor may also be configured to send a trigger signal to the booster pump when it is detected that the cell voltage in the discharge circuit is below a preset lower threshold.
通过本实施方式,能够实现高压场景下的充电过压保护、放电欠压保护等电池管理,并且电路结构简单,成本较小。According to the present embodiment, battery management such as charging overvoltage protection and discharge undervoltage protection in a high voltage scene can be realized, and the circuit configuration is simple and the cost is small.
本实施例提供的电池管理系统,包括目标回路对应的过流保护支路,以及与过流保护支路连接的升压泵,具体的,某目标回路的过流保护支路执行在监测到目标回路中的电流大小超过一定阈值时,向升压泵发送触发信号,升压信号基于触发信号输出高压控制信号,控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的过流保护,进而实现高压场景下的电池管理。此外,基于本实施例的结构,还能够实现高压场景下的过温欠温、过压欠压等电池管理和维护。The battery management system provided in this embodiment includes an overcurrent protection branch corresponding to the target loop and a booster pump connected to the overcurrent protection branch. Specifically, the overcurrent protection branch of a target loop is executed to monitor the target. When the current in the loop exceeds a certain threshold, a trigger signal is sent to the booster pump, and the boost signal outputs a high voltage control signal based on the trigger signal to control the switch of the target loop to be turned off, thereby cutting off the target loop and realizing the target loop. Stream protection, which in turn enables battery management in high voltage scenarios. Further, based on the configuration of the present embodiment, battery management and maintenance such as over-temperature under-temperature, over-voltage under-voltage, and the like in a high-voltage scene can be realized.
总之,本申请基于升压泵,利用一些常规元件组成电池管理系统中针对不同目标回路的支路,该支路用于基于不同的电池管理保护进行相应监测,具体的,可以利用微处理器监视充放电过流、充电过压、放电欠压、过温欠温等高延时的保护功能。由于使用的是常规元件,整个方案的成本可以降低很多。并且本申请采用微处理器加硬件保护电路的架构,使用起来比较灵活,方便。此外,本申请中使用升压泵控制目标回路的开关,可以理解,基于本方案实现的电池管理所支持的最大电压通过借助升压泵的驱动能力,能够得到很大程度的提升,从而实现高压场景下的电池管理。In summary, the present application is based on a booster pump, which utilizes some conventional components to form a branch for a different target loop in a battery management system, the branch being used for corresponding monitoring based on different battery management protections, specifically, microprocessor monitoring High-latency protection functions such as charge and discharge over-current, charge over-voltage, discharge under-voltage, over-temperature and under-temperature. Due to the use of conventional components, the cost of the entire solution can be much reduced. And the application adopts the architecture of the microprocessor plus the hardware protection circuit, which is more flexible and convenient to use. In addition, in the present application, the booster pump is used to control the switch of the target circuit. It can be understood that the maximum voltage supported by the battery management based on the present scheme can be greatly improved by the driving capability of the booster pump, thereby achieving high voltage. Battery management in the scene.
需要说明的是,本申请中用于实现不同类型电池管理的支路的具体结构可以有多种实施方式,本申请在此不对其进行限制,为了更详细直观的说明系统的运作流程,分别以BQ76200升压泵为基础搭建如图3A、图3B和图3C的实例说明:It should be noted that the specific structure of the branch used to implement different types of battery management in the present application may be implemented in various embodiments. The present application does not limit the present application. In order to explain the operation process of the system in more detail, The BQ76200 booster pump is based on the example shown in Figure 3A, Figure 3B and Figure 3C:
具体的,如图3A所示,图3A为本申请提供的一种电池管理系统的电路结构图,该电池管理系统采用正极关断的方式。该电池管理系统包括比较器U3B所在的电池充电回路的短路保护支路和比较器U3D所在电池放电回路的短路保护支路、以及微处理器MCU所在的过流保护支路;所述短路保护支路和过流保护支路均与升压泵U1的输入端连接;Specifically, as shown in FIG. 3A, FIG. 3A is a circuit structural diagram of a battery management system provided by the present application, and the battery management system adopts a method in which the positive electrode is turned off. The battery management system includes a short circuit protection branch of the battery charging circuit where the comparator U3B is located, a short circuit protection branch of the battery discharge circuit where the comparator U3D is located, and an overcurrent protection branch where the microprocessor MCU is located; the short circuit protection branch Both the road and the overcurrent protection branch are connected to the input of the booster pump U1;
其中,R22为串联在主回路的检测电阻,U3A为充电短路信号的放大器,U3B为充电短路信号的比较器,U3C为放电短路信号的放大器,U3D为放电短路信号的比较器,U1为升压泵。当充电的时候电流由PACK+流经B+、B-最后到PACK-,由此可见在R22的左侧R20电阻上会产生一个电压信号,又由于R22的阻值一般较小,所以在R20上产生的电压也比较小,这是就需要利用U3A把信号放大(这个放大的倍数可以通过调整R11和R12的阻值来实现),放大后的信号经过R14和C4组成的RC延时电路然后传递给比较器U3B,如果这个信号大于基准电压(图中为3.3V),在U3B的第7脚就会产生一个高电平,再经过二极管D1和R13和C3组成的RC延时电路到达升压泵U1的第4管脚(CHG_EN管脚),然后升压泵U1的第16脚(CHG)产生一个高压低电平进而把电池充电回路的开关Q2关掉。Among them, R22 is the detection resistor connected in series in the main circuit, U3A is the amplifier for charging short circuit signal, U3B is the comparator for charging short circuit signal, U3C is the amplifier for discharging short circuit signal, U3D is the comparator for discharging short circuit signal, U1 is boost Pump. When charging, the current flows from PACK+ through B+, B- and finally to PACK-. It can be seen that a voltage signal is generated on the R20 resistor on the left side of R22, and the resistance value of R22 is generally small, so it is generated on R20. The voltage is also relatively small, which requires the use of U3A to amplify the signal (this multiple of amplification can be achieved by adjusting the resistance of R11 and R12), the amplified signal is passed through the RC delay circuit composed of R14 and C4 and then passed to Comparator U3B, if this signal is greater than the reference voltage (3.3V in the figure), a high level is generated at the 7th pin of U3B, and then the RC delay circuit composed of diodes D1 and R13 and C3 reaches the booster pump. The 4th pin of U1 (CHG_EN pin), then the 16th pin (CHG) of booster pump U1 generates a high voltage low level and turns off the switch Q2 of the battery charging circuit.
上述电池充电回路的短路保护支路中,延时时间=U3A动作的时间+R14 和C4组成的RC延时+U3B动作的延时+R13和C3组成的RC延时+U1动作的延时。由于U3A动作的时间,U3B动作的延时,U1动作的延时这三个芯片的延时时间都很短基本可以忽略,所以电池充电回路的短路保护支路的延时基本上可以认为是两个RC电路产生的延时,这个延时时间可以通过调整RC的值来改变。同理放电的时候,电流由PACK+流经PACK-、B-最后到B+,这时电池放电回路对应的短路保护支路,即R21所在的支路执行类似上述步骤的流程,即当放电信号达到超过基准信号时控制电池放电回路的开关D3关断。In the short circuit protection branch of the above battery charging circuit, the delay time = U3A action time + R14 and C4 RC delay + U3B action delay + R13 and C3 RC delay + U1 action delay. Due to the time of U3A action, the delay of U3B action, and the delay time of U1 action, the delay time of these three chips is very short, so the delay of the short circuit protection branch of the battery charging circuit can basically be considered as two. The delay generated by the RC circuit, this delay time can be changed by adjusting the value of RC. In the same discharge, the current flows from PACK+ through PACK-, B- and finally to B+. At this time, the short-circuit protection branch corresponding to the battery discharge circuit, that is, the branch where R21 is located, performs a process similar to the above steps, that is, when the discharge signal reaches The switch D3 that controls the battery discharge circuit is turned off when the reference signal is exceeded.
另外,针对微处理器MCU所在的过流保护支路进行示例说明:可以看出过流保护支路和短路保护支路的差别在于,短路保护支路的信号处理电路为比较器,而过流保护支路的信号处理电路为微处理器。下面,仍结合图3A阐述过流保护支路的信号处理流程:In addition, an example is given for the overcurrent protection branch where the microprocessor MCU is located: it can be seen that the difference between the overcurrent protection branch and the short circuit protection branch is that the signal processing circuit of the short circuit protection branch is a comparator, and the overcurrent The signal processing circuit of the protection branch is a microprocessor. In the following, the signal processing flow of the overcurrent protection branch is still described in conjunction with FIG. 3A:
如图3A,R22的两端的电压信号分别被信号放大电路U4A和U4B以一定的放大倍数放大(实际应用中,放大后的信号电压不能超过微处理器的供电电压3.3V),然后由微处理器MCU采集这两个信号。微处理器MCU把采集到两个电压信号的差值除以R22的电阻值就可得到目标回路(例如,电池充电回路或电池放电回路)的电流,差值的正负标示电流的流向,即标示当前目标回路为电池充电回路还是电池放电回路。如果电流大小超过设定的阈值,则经过延时之后微处理器MCU输出一个低电平给升压泵,进而关断目标回路的开关,达到过流保护的目的。另外,在过压欠压保护和过温欠温保护中,电压,温度的监测也可由微处理器执行。As shown in FIG. 3A, the voltage signals at both ends of R22 are amplified by signal amplification circuits U4A and U4B at a certain amplification factor (in practical applications, the amplified signal voltage cannot exceed the supply voltage of the microprocessor by 3.3V), and then processed by micro processing. The MCU captures these two signals. The microprocessor MCU divides the difference between the two voltage signals collected by the resistance value of R22 to obtain the current of the target circuit (for example, the battery charging circuit or the battery discharging circuit), and the positive and negative of the difference indicate the current flow direction, that is, Indicates whether the current target loop is a battery charging circuit or a battery discharging circuit. If the current exceeds the set threshold, the microprocessor MCU outputs a low level to the boost pump after the delay, thereby turning off the switch of the target loop to achieve the purpose of overcurrent protection. In addition, in overvoltage undervoltage protection and overtemperature and undertemperature protection, voltage and temperature monitoring can also be performed by the microprocessor.
具体的,图3B为图3A提供的电池管理系统采用负极关断方式下的电路结构图,其中,图3B中各目标回路对应的支路与图3A一致,区别在于,图3B中电池充电回路的开关Q10和电池放电回路的开关Q11采用负极控制的方式,而图3A中电池充电回路的开关Q2、预充电回路的开关Q1和电池放电回路的开关Q3采用正极控制。图3C为图3A提供的电池管理系统采用充电接口和正极接口单独控制时的电路结构图,同样的,图3C中各目标回路对应的支路与图3A一致,区别在于,图3C中电池充电回路的开关Q4和预充电回路开关Q1对应的接口为专门的充电接口CHG,与电池放电回路的开关Q5对应的负极接口PACK-分别单独设置,而图3A中上述目标回路的开关共 用同一负极接口PACK-。Specifically, FIG. 3B is a circuit structure diagram of the battery management system provided in FIG. 3A in a negative-off mode, wherein the branch corresponding to each target circuit in FIG. 3B is consistent with FIG. 3A, and the difference is that the battery charging circuit in FIG. 3B The switch Q10 and the switch Q11 of the battery discharge circuit are controlled by the negative pole, and the switch Q2 of the battery charging circuit in FIG. 3A, the switch Q1 of the pre-charging circuit, and the switch Q3 of the battery discharging circuit are controlled by the positive pole. FIG. 3C is a circuit diagram of the battery management system provided by FIG. 3A when the charging interface and the positive interface are separately controlled. Similarly, the branch corresponding to each target circuit in FIG. 3C is consistent with FIG. 3A, except that the battery is charged in FIG. 3C. The interface corresponding to the switch Q4 of the loop and the pre-charge loop switch Q1 is a special charging interface CHG, and the negative interface PACK- corresponding to the switch Q5 of the battery discharge circuit is separately set, and the switches of the above target loops in FIG. 3A share the same negative interface. PACK-.
本申请提供的基于升压泵的电池管理系统,包括针对不同目标回路的支路,以及与不同目标回路的支路连接的升压泵,具体的,该支路执行在监测到目标回路中的电信号满足预设的触发条件时,向升压泵发送触发信号,升压信号基于目标回路对应的支路发送的触发信号输出高压控制信号,该高压控制信号用于控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的保护和维护。可以理解,通过升压泵根据接收到的触发信号能够输出电压较高的控制信号,从而实现高压场景下的电池管理,并且本方案能够通过常规元器件实现,因此能够有效节省电池管理的成本。The boost pump-based battery management system provided by the present application includes a branch for different target circuits and a boost pump connected to a branch of a different target circuit. Specifically, the branch is executed in the target loop. When the electrical signal meets the preset trigger condition, the trigger signal is sent to the booster pump, and the boost signal outputs a high voltage control signal based on the trigger signal sent by the branch corresponding to the target loop, and the high voltage control signal is used to control the switching of the target loop. Broken, thereby cutting off the target loop to achieve protection and maintenance of the target loop. It can be understood that the boosting pump can output a high voltage control signal according to the received trigger signal, thereby realizing battery management in a high voltage scenario, and the solution can be realized by conventional components, thereby effectively saving the cost of battery management.
本申请实施例还提供一种电池,该电池包括:如前述任一实施方式所述的电池管理系统;所述电池管理系统连接在所述电池的正负极和所述电池的正负接口之间。The embodiment of the present application further provides a battery, comprising: the battery management system according to any one of the preceding embodiments; the battery management system is connected to the positive and negative terminals of the battery and the positive and negative interfaces of the battery. between.
本实施例提供的电池中,电池管理系统包括针对不同目标回路的支路,以及与不同目标回路的支路连接的升压泵,具体的,该支路执行在监测到目标回路中的电信号满足预设的触发条件时,向升压泵发送触发信号,升压信号基于目标回路对应的支路发送的触发信号输出高压控制信号,该高压控制信号用于控制该目标回路的开关关断,从而切断该目标回路,实现对目标回路的保护和维护。可以理解,通过升压泵根据接收到的触发信号能够输出电压较高的控制信号,从而实现高压场景下的电池管理,并且本方案能够通过常规元器件实现,因此能够有效节省电池管理的成本。In the battery provided in this embodiment, the battery management system includes a branch for different target circuits, and a boost pump connected to a branch of a different target circuit. Specifically, the branch performs an electrical signal in monitoring the target loop. When the preset trigger condition is met, a trigger signal is sent to the booster pump, and the boost signal outputs a high voltage control signal based on the trigger signal sent by the branch corresponding to the target loop, and the high voltage control signal is used to control the switch of the target loop to be turned off. Thereby, the target loop is cut off to achieve protection and maintenance of the target loop. It can be understood that the boosting pump can output a high voltage control signal according to the received trigger signal, thereby realizing battery management in a high voltage scenario, and the solution can be realized by conventional components, thereby effectively saving the cost of battery management.

Claims (22)

  1. 一种基于升压泵的电池管理系统,其特征在于,包括:目标回路对应的支路、以及与所述支路连接的升压泵;其中,A battery management system based on a booster pump, comprising: a branch corresponding to a target circuit, and a booster pump connected to the branch; wherein
    所述支路连接在所述目标回路与所述升压泵之间连接,所述升压泵的输出端与所述目标回路的开关连接;The branch connection is connected between the target circuit and the booster pump, and an output end of the booster pump is connected to a switch of the target circuit;
    所述目标回路对应的支路,用于监测所述目标回路中的电信号,当所述目标回路中的电信号满足预设的触发条件时,向所述升压泵发送触发信号;a branch corresponding to the target loop, configured to monitor an electrical signal in the target loop, and send a trigger signal to the booster pump when an electrical signal in the target loop satisfies a preset trigger condition;
    所述升压泵,用于根据所述触发信号输出高压控制信号,所述高压控制信号用于控制所述目标回路的开关关断。The boosting pump is configured to output a high voltage control signal according to the trigger signal, and the high voltage control signal is used to control a switch off of the target loop.
  2. 根据权利要求1所述的电池管理系统,其特征在于,所述支路包括:信号采样电路、信号放大电路、以及信号处理电路;其中,The battery management system according to claim 1, wherein the branch comprises: a signal sampling circuit, a signal amplifying circuit, and a signal processing circuit; wherein
    所述信号采样电路连接在所述目标回路与所述信号放大电路的输入端之间,所述信号放大电路的输出端与所述信号处理电路的输入端连接,所述信号处理电路的输出端与所述升压泵连接;The signal sampling circuit is connected between the target circuit and an input end of the signal amplifying circuit, and an output end of the signal amplifying circuit is connected to an input end of the signal processing circuit, and an output end of the signal processing circuit Connected to the booster pump;
    所述信号采样电路,用于对目标回路中的电信号进行采样;The signal sampling circuit is configured to sample an electrical signal in a target loop;
    所述信号放大电路,用于对信号采样电路采样的电信号进行放大,并将放大后的电信号输出给所述信号处理电路;The signal amplifying circuit is configured to amplify the electrical signal sampled by the signal sampling circuit, and output the amplified electrical signal to the signal processing circuit;
    所述信号处理电路,用于当检测到接收到的电信号满足预设的触发条件时,向所述升压泵发送所述触发信号。The signal processing circuit is configured to send the trigger signal to the booster pump when detecting that the received electrical signal meets a preset trigger condition.
  3. 根据权利要求2所述的电池管理系统,其特征在于,所述支路还包括:连接在所述信号采样电路与所述信号处理电路之间的延时电路;The battery management system according to claim 2, wherein the branch further comprises: a delay circuit connected between the signal sampling circuit and the signal processing circuit;
    所述延时电路,用于将接收到的电信号经延时后传输给所述信号处理电路。The delay circuit is configured to transmit the received electrical signal to the signal processing circuit after delay.
  4. 根据权利要求3所述的电池管理系统,其特征在于,所述支路包括短路保护支路。The battery management system of claim 3 wherein said branch comprises a short circuit protection branch.
  5. 根据权利要求4所述的电池管理系统,其特征在于,所述短路保护支路的信号处理电路为比较器,所述短路保护支路的信号放大电路的输出端与所述比较器的同相输入端连接;所述短路保护支路的延时电路为RC延时电路;The battery management system according to claim 4, wherein the signal processing circuit of the short circuit protection branch is a comparator, the output of the signal amplifying circuit of the short circuit protection branch and the non-inverting input of the comparator End connection; the delay circuit of the short circuit protection branch is an RC delay circuit;
    所述比较器,具体用于当检测到同相输入端接收的电信号高于反向输入 端接收的基准信号时,向所述升压泵发送触发信号。The comparator is specifically configured to send a trigger signal to the booster pump when detecting that the electrical signal received by the non-inverting input is higher than the reference signal received by the inverting input.
  6. 根据权利要求5所述的电池管理系统,其特征在于,所述延时电路包括:连接在所述信号放大电路和所述比较器之间的第一延时电路、以及连接在所述比较器和所述升压泵之间的第二延时电路;其中,The battery management system according to claim 5, wherein said delay circuit comprises: a first delay circuit connected between said signal amplifying circuit and said comparator, and said comparator And a second delay circuit between the booster pump; wherein
    所述第一延时电路包括第一延时电阻和第一延时电容,所述第一延时电阻的一端与所述信号放大电路的输出端连接,所述第一延时电阻的另一端与所述第一延时电容的一端和所述比较器的同相输入端连接,所述第一延时电容的另一端接地;The first delay circuit includes a first delay resistor and a first delay capacitor, one end of the first delay resistor is connected to an output end of the signal amplifying circuit, and the other end of the first delay resistor Connected to one end of the first delay capacitor and the non-inverting input of the comparator, and the other end of the first delay capacitor is grounded;
    所述第二延时电路包括第二延时电阻和第二延时电容,所述第二延时电阻的一端与所述比较器的输出端连接,所述第二延时电阻的另一端与所述第二延时电容的一端和所述升压泵连接,所述第二延时电容的另一端接地。The second delay circuit includes a second delay resistor and a second delay capacitor, one end of the second delay resistor is connected to an output end of the comparator, and the other end of the second delay resistor is One end of the second delay capacitor is connected to the booster pump, and the other end of the second delay capacitor is grounded.
  7. 根据权利要求6所述的电池管理系统,其特征在于,所述比较器与所述第二延时电路之间还连接有第一二极管;其中,The battery management system according to claim 6, wherein a first diode is further connected between the comparator and the second delay circuit;
    所述第一二极管的正极与所述比较器的输出端连接,所述第一二极管的负极与所述第二延时电阻的一端连接。The anode of the first diode is connected to the output of the comparator, and the cathode of the first diode is connected to one end of the second delay resistor.
  8. 根据权利要求4-7中任一项所述的电池管理系统,其特征在于,所述短路保护支路的信号采样电路包括第一电阻和第二电阻;其中,The battery management system according to any one of claims 4-7, wherein the signal sampling circuit of the short circuit protection branch comprises a first resistor and a second resistor; wherein
    所述第一电阻串联在所述目标回路中;The first resistor is connected in series in the target loop;
    所述第二电阻的一端与所述第一电阻先接收到目标回路中电信号的一端连接,所述第二电阻的另一端与所述信号放大电路的输入端连接。One end of the second resistor is connected to one end of the first resistor that receives the electrical signal in the target loop, and the other end of the second resistor is connected to the input end of the signal amplifying circuit.
  9. 根据权利要求2所述的电池管理系统,其特征在于,所述支路包括过流保护支路。The battery management system of claim 2 wherein said branch comprises an overcurrent protection branch.
  10. 根据权利要求9所述的电池管理系统,其特征在于,所述过流保护支路的信号处理电路为微处理器;The battery management system according to claim 9, wherein the signal processing circuit of the overcurrent protection branch is a microprocessor;
    所述过流保护支路的信号采样电路包括:第三电阻、第四电阻、第五电阻以及第一电容;所述第三电阻串联在所述目标回路中;所述第四电阻的一端连接所述第三电阻的一端;所述第五电阻的一端连接所述第三电阻的另一端;The signal sampling circuit of the overcurrent protection branch includes: a third resistor, a fourth resistor, a fifth resistor, and a first capacitor; the third resistor is connected in series in the target loop; and one end of the fourth resistor is connected One end of the third resistor; one end of the fifth resistor is connected to the other end of the third resistor;
    所述过流保护支路的信号放大电路包括第一信号放大电路和第二信号放大电路;所述第四电阻R23的另一端与所述第一信号放大电路的输入端和所 述第一电容C8的一端连接;所述第五电阻R24的另一端与所述第二信号放大电路的输入端和所述第一电容C8的另一端连接;所述第一信号放大电路和所述第二信号放大电路的输出端与所述微处理器连接;The signal amplifying circuit of the overcurrent protection branch includes a first signal amplifying circuit and a second signal amplifying circuit; the other end of the fourth resistor R23 and the input end of the first signal amplifying circuit and the first capacitor One end of C8 is connected; the other end of the fifth resistor R24 is connected to an input end of the second signal amplifying circuit and the other end of the first capacitor C8; the first signal amplifying circuit and the second signal An output of the amplification circuit is coupled to the microprocessor;
    所述微处理器,具体用于根据所述第一信号放大电路和所述第二信号放大电路输出的电信号,当检测到所述目标回路中的电流大小超过预设的阈值时,向所述升压泵发送触发信号。The microprocessor is specifically configured to: according to the electrical signals output by the first signal amplifying circuit and the second signal amplifying circuit, when detecting that the current in the target loop exceeds a preset threshold, The booster pump sends a trigger signal.
  11. 根据权利要求10所述的电池管理系统,其特征在于,A battery management system according to claim 10, wherein
    所述微处理器,还用于当检测到目标回路中的电芯温度超过预设的范围时,向所述升压泵发送触发信号。The microprocessor is further configured to send a trigger signal to the booster pump when detecting that the cell temperature in the target loop exceeds a preset range.
  12. 根据权利要求10所述的电池管理系统,其特征在于,A battery management system according to claim 10, wherein
    所述目标回路包括电池充电回路;所述微处理器,还用于当检测到充电回路中的电芯电压超过预设的上限阈值时,向所述升压泵发送触发信号;和/或,The target circuit includes a battery charging circuit; the microprocessor is further configured to: when detecting that the cell voltage in the charging circuit exceeds a preset upper threshold, send a trigger signal to the boosting pump; and/or,
    所述目标回路包括电池放电回路;所述微处理器,还用于当检测到放电回路中的电芯电压低于预设的下限阈值时,向所述升压泵发送触发信号。The target circuit includes a battery discharge circuit; the microprocessor is further configured to send a trigger signal to the boost pump when detecting that the cell voltage in the discharge circuit is below a predetermined lower threshold.
  13. 根据权利要求1-12中任一项所述的电池管理系统,其特征在于,所述目标回路包括电池放电回路;所述电池放电回路的开关包括:第一NMOS管、第一放电电阻R10、第二放电电阻R5、第三放电电阻R6和第一稳压二极管ZD1;The battery management system according to any one of claims 1 to 12, wherein the target circuit comprises a battery discharge circuit; the switch of the battery discharge circuit comprises: a first NMOS transistor, a first discharge resistor R10, a second discharge resistor R5, a third discharge resistor R6 and a first Zener diode ZD1;
    所述第一放电电阻R10的一端与所述升压泵连接,所述第一放电电阻R10的另一端与所述第二放电电阻R5的一端、所述第三放电电阻R6的一端以及所述第一稳压二极管ZD1的负极连接;One end of the first discharge resistor R10 is connected to the booster pump, the other end of the first discharge resistor R10 and one end of the second discharge resistor R5, one end of the third discharge resistor R6, and the a negative connection of the first Zener diode ZD1;
    所述第一NMOS管的栅极与所述第二放电电阻R5的另一端连接,所述第一NMOS管的源极与所述第三放电电阻R6的另一端、所述第一稳压二极管ZD1的正极以及电池的正极接口PACK+连接,所述第一NMOS管的漏极与电池正极B+连接。The gate of the first NMOS transistor is connected to the other end of the second discharge resistor R5, the source of the first NMOS transistor and the other end of the third discharge resistor R6, the first Zener diode The positive electrode of ZD1 and the positive terminal PACK+ of the battery are connected, and the drain of the first NMOS transistor is connected to the positive electrode B+ of the battery.
  14. 根据权利要求13所述的电池管理系统,其特征在于,所述目标回路还包括电池充电回路,所述电池放电回路的开关与电池正极B+之间连接有所述电池充电回路的开关;所述电池充电回路的开关包括:第二NMOS管、第一充电电阻、第二充电电阻和第三充电电阻;The battery management system according to claim 13, wherein the target circuit further comprises a battery charging circuit, and a switch of the battery charging circuit is connected between the switch of the battery discharging circuit and the battery positive electrode B+; The switch of the battery charging circuit includes: a second NMOS transistor, a first charging resistor, a second charging resistor, and a third charging resistor;
    所述第一充电电阻R8的一端与所述升压泵连接,所述第一充电电阻R8的另一端与所述第二充电电阻R4和所述第三充电电阻R3的一端连接;One end of the first charging resistor R8 is connected to the booster pump, and the other end of the first charging resistor R8 is connected to one end of the second charging resistor R4 and the third charging resistor R3;
    所述第二NMOS管的栅极与所述第二充电电阻R4的另一端连接,所述第二NMOS管的源极与所述第三充电电阻R3的另一端和电池正极B+连接,所述第二NMOS管的漏极与所述第一NMOS管的漏极连接。a gate of the second NMOS transistor is connected to the other end of the second charging resistor R4, and a source of the second NMOS transistor is connected to the other end of the third charging resistor R3 and the battery positive terminal B+. A drain of the second NMOS transistor is connected to a drain of the first NMOS transistor.
  15. 根据权利要求1-13中任一项所述的电池管理系统,其特征在于,所述目标回路还包括电池充电回路;所述电池充电回路的开关包括:第三NMOS管、第四充电电阻、第五充电电阻和第六充电电阻;The battery management system according to any one of claims 1 to 13, wherein the target circuit further comprises a battery charging circuit; the switch of the battery charging circuit comprises: a third NMOS transistor, a fourth charging resistor, a fifth charging resistor and a sixth charging resistor;
    所述第四充电电阻R54的一端与所述升压泵连接,所述第四充电电阻R54的另一端与所述第五充电电阻R59和所述第六充电电阻R53的一端连接;One end of the fourth charging resistor R54 is connected to the boosting pump, and the other end of the fourth charging resistor R54 is connected to one end of the fifth charging resistor R59 and the sixth charging resistor R53;
    所述第三NMOS管的栅极与所述第五充电电阻R59的另一端连接,所述第三NMOS管的源极与所述第六充电电阻R53的另一端和电池正极B+连接,所述第三NMOS管的漏极与充电接口CHG连接。a gate of the third NMOS transistor is connected to the other end of the fifth charging resistor R59, and a source of the third NMOS transistor is connected to the other end of the sixth charging resistor R53 and a battery positive terminal B+. The drain of the third NMOS transistor is connected to the charging interface CHG.
  16. 根据权利要求14或15所述的电池管理系统,其特征在于,所述目标回路还包括预充电回路,所述预充电回路与所述电池充电回路对应同一支路;所述预充电回路的开关包括:第一PMOS管、第一预充电电阻、第二预充电电阻和第三预充电电阻;The battery management system according to claim 14 or 15, wherein the target circuit further comprises a pre-charging circuit, the pre-charging circuit and the battery charging circuit corresponding to the same branch; the pre-charging circuit switch The method includes: a first PMOS transistor, a first pre-charge resistor, a second pre-charge resistor, and a third pre-charge resistor;
    所述第一预充电电阻R9的一端与所述升压泵连接;One end of the first pre-charging resistor R9 is connected to the booster pump;
    所述第一PMOS管的栅极与所述第一预充电电阻R9的另一端和所述第二预充电电阻R2的一端连接,所述第一PMOS管的源极与所述第一NMOS管的漏极和所述第二预充电电阻R2的另一端连接,所述第一PMOS管的漏极与所述第三预充电电阻R1的一端连接;The gate of the first PMOS transistor is connected to the other end of the first pre-charge resistor R9 and one end of the second pre-charge resistor R2, the source of the first PMOS transistor and the first NMOS transistor The drain is connected to the other end of the second pre-charge resistor R2, and the drain of the first PMOS transistor is connected to one end of the third pre-charge resistor R1;
    所述第三预充电电阻R1的另一端与所述电池充电回路的开关中NMOS管的源极连接。The other end of the third pre-charging resistor R1 is connected to the source of the NMOS transistor in the switch of the battery charging circuit.
  17. 根据权利要求1-12中任一项所述的电池管理系统,其特征在于,所述目标回路包括电池放电回路;所述电池放电回路的开关包括:第四NMOS管Q11和第四放电电阻R10;The battery management system according to any one of claims 1 to 12, wherein the target circuit comprises a battery discharge circuit; and the switch of the battery discharge circuit comprises: a fourth NMOS transistor Q11 and a fourth discharge resistor R10 ;
    所述第四NMOS管Q11的栅极与所述升压泵和所述第四放电电阻R10的一端连接,所述第四NMOS管Q11的源极与电池负极B-和所述第四放电电阻R10的另一端连接,所述第四NMOS管Q11的漏极与电池的负极接口 PACK-连接。a gate of the fourth NMOS transistor Q11 is connected to one end of the boosting pump and the fourth discharging resistor R10, a source of the fourth NMOS transistor Q11 and a battery negative pole B- and the fourth discharging resistor The other end of R10 is connected, and the drain of the fourth NMOS transistor Q11 is connected to the negative interface PACK- of the battery.
  18. 根据权利要求17所述的电池管理系统,其特征在于,所述目标回路还包括电池充电回路;所述电池放电回路的开关与所述负极接口之间连接有电池充电回路的开关;所述电池充电回路的开关包括:第五NMOS管Q10、第六NMOS管Q12、第七充电电阻R95、第八充电电阻R94、第九充电电阻R92、第二二极管D10和第二稳压管ZD3;The battery management system according to claim 17, wherein said target circuit further comprises a battery charging circuit; a switch of a battery charging circuit is connected between said switch of said battery discharging circuit and said negative electrode interface; said battery The switch of the charging circuit includes: a fifth NMOS transistor Q10, a sixth NMOS transistor Q12, a seventh charging resistor R95, an eighth charging resistor R94, a ninth charging resistor R92, a second diode D10 and a second Zener diode ZD3;
    所述第六NMOS管Q12的栅极接地,所述第六NMOS管Q12的源极与所述第七充电电阻R95的一端连接;所述第六NMOS管Q12的漏极与所述升压泵连接;所述第七充电电阻R95的另一端与所述第八充电电阻R94的一端和所述第二二极管D10的正极连接;The gate of the sixth NMOS transistor Q12 is grounded, the source of the sixth NMOS transistor Q12 is connected to one end of the seventh charging resistor R95; the drain of the sixth NMOS transistor Q12 is connected to the boosting pump Connecting, the other end of the seventh charging resistor R95 is connected to one end of the eighth charging resistor R94 and the anode of the second diode D10;
    所述第八充电电阻R94的另一端与所述第九充电电阻R92的一端、所述第二二极管D10的负极以及所述第二稳压管ZD3的负极连接;The other end of the eighth charging resistor R94 is connected to one end of the ninth charging resistor R92, the cathode of the second diode D10, and the cathode of the second Zener diode ZD3;
    所述第五NMOS管的栅极与所述第八充电电阻R94的另一端连接,所述第五NMOS管的源极与所述第九充电电阻R92的另一端、所述第二稳压管ZD3的正极以及电池的负极接口PACK-连接,所述第五NMOS管的漏极与第四NMOS管Q11的漏极连接。The gate of the fifth NMOS transistor is connected to the other end of the eighth charging resistor R94, the source of the fifth NMOS transistor and the other end of the ninth charging resistor R92, the second Zener diode The positive electrode of ZD3 and the negative electrode interface of the battery are PACK-connected, and the drain of the fifth NMOS transistor is connected to the drain of the fourth NMOS transistor Q11.
  19. 根据权利要求1-18中任一项所述的电池管理系统,其特征在于,电池的正极接口PACK+和负极接口PACK-之间连接有第三二极管D2;The battery management system according to any one of claims 1 to 18, wherein a third diode D2 is connected between the positive terminal PACK+ and the negative interface PACK- of the battery;
    所述第三二极管D2的正极与负极接口PACK-连接,所述第三二极管D2的负极与正极接口PACK+连接。The anode of the third diode D2 is connected to the cathode interface PACK-, and the cathode of the third diode D2 is connected to the anode interface PACK+.
  20. 根据权利要求1-19中任一项所述的电池管理系统,其特征在于,所述系统还包括:第六电阻R15和第二电容C5;The battery management system according to any one of claims 1 to 19, wherein the system further comprises: a sixth resistor R15 and a second capacitor C5;
    所述第六电阻R15的一端与所述第二电容C5的一端和所述升压泵连接,所述第六电阻R15的另一端与电池的正极接口PACK+连接;One end of the sixth resistor R15 is connected to one end of the second capacitor C5 and the booster pump, and the other end of the sixth resistor R15 is connected to the positive interface PACK+ of the battery;
    所述第二电容C5的另一端接地。The other end of the second capacitor C5 is grounded.
  21. 根据权利要求1-20中任一项所述的电池管理系统,其特征在于,所述目标回路的开关有多个,且所述目标回路的多个开关并联。The battery management system according to any one of claims 1 to 20, wherein the target circuit has a plurality of switches, and the plurality of switches of the target circuit are connected in parallel.
  22. 一种电池,其特征在于,包括:如权利要求1-21中任一项所述的电池管理系统;A battery, comprising: the battery management system according to any one of claims 1 to 21;
    所述电池管理系统连接在所述电池的正负极和所述电池的正负接口之间。The battery management system is coupled between the positive and negative terminals of the battery and the positive and negative interfaces of the battery.
PCT/CN2017/118601 2017-12-26 2017-12-26 Booster pump-based battery management system and battery WO2019127010A1 (en)

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JPH02168822A (en) * 1988-09-12 1990-06-28 Nippondenso Co Ltd Power source equipment for vehicle
CN201181855Y (en) * 2008-04-18 2009-01-14 杨约葵 Lithium ion battery boosting device
CN101394094A (en) * 2007-09-20 2009-03-25 李仕清 Full automatic high efficient voltage step-up step-down circuit
CN206820464U (en) * 2017-05-05 2017-12-29 东莞市嘉佰达电子科技有限公司 A kind of lithium battery protection board ON-OFF control circuit
CN207117205U (en) * 2017-04-24 2018-03-16 深圳市道通智能航空技术有限公司 Multi-string battery group management system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02168822A (en) * 1988-09-12 1990-06-28 Nippondenso Co Ltd Power source equipment for vehicle
CN101394094A (en) * 2007-09-20 2009-03-25 李仕清 Full automatic high efficient voltage step-up step-down circuit
CN201181855Y (en) * 2008-04-18 2009-01-14 杨约葵 Lithium ion battery boosting device
CN207117205U (en) * 2017-04-24 2018-03-16 深圳市道通智能航空技术有限公司 Multi-string battery group management system
CN206820464U (en) * 2017-05-05 2017-12-29 东莞市嘉佰达电子科技有限公司 A kind of lithium battery protection board ON-OFF control circuit

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