CN100486032C - Collective and distributive type power batteries dynamic equilibria management system - Google Patents

Collective and distributive type power batteries dynamic equilibria management system Download PDF

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CN100486032C
CN100486032C CNB2007100264315A CN200710026431A CN100486032C CN 100486032 C CN100486032 C CN 100486032C CN B2007100264315 A CNB2007100264315 A CN B2007100264315A CN 200710026431 A CN200710026431 A CN 200710026431A CN 100486032 C CN100486032 C CN 100486032C
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battery
cell
circuit
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connected
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CN101141012A (en
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罗玉涛
赵克刚
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华南理工大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

本发明公开了一种集散式动力电池组动态均衡管理系统。 The present invention discloses a distributed type power battery management system dynamic equilibrium. 该系统包括电池监测子系统(7)、电池均衡子系统(1)、电池管理子系统(12)和上位机(10)。 The monitoring system includes a battery subsystem (7), the battery equalization subsystem (1), the battery management subsystem (12) and PC (10). 电池监测子系统(7)主要由多个单体电池采样模块组成,电池管理子系统(12)包括以微控制器为核心的电池管理ECU、多通道通讯电路(23)和总线通讯模块以及通道选通控制模块,电池均衡子系统(1)由多个单体电池均衡模块(2)与通道选择电路(3)连接组成。 Battery monitoring subsystem (7) mainly composed of a plurality of cell samples modules, battery management subsystem (12) comprises a microcontroller core of the ECU battery management, multi-channel communication circuit (23), and a bus communication module and a channel gating control module, a battery equalization subsystem (1) consists of a plurality of cell balancing module (2) and the channel selection circuit (3) connected to the composition. 本发明所形成的新的动力电池组动态均衡管理系统具有紧凑的拓扑布局、结构简单、性能可靠,便于移植、维护和扩展,实现了集中监控,动态分散均衡的管理方式,它具备优良的调节控制性能和较高的可靠性。 The new power batteries dynamic balancing management system formed according to the present invention has a compact topology, simple structure, reliable, easy to transplant, maintenance and expansion, to achieve a centralized monitoring, dynamic dispersion equalization management, it has excellent adjustment control performance and high reliability.

Description

一种集散式动力电池组动态均衡管理系统 One kind of distributed power battery management system dynamic equalization

技术领域 FIELD

本发明涉及一种集散式动力电池组均衡管理系统。 The present invention relates to a battery-type power distribution management system equalization. 该系统可用于纯电动汽车、混合动力电动汽车、燃料电池电动汽车、电动船舶或其它装备动力电池组的领域。 The system can be used in the field of electric cars, hybrid electric vehicles, fuel cell electric vehicles, electric power ship or other equipment the battery pack.

背景技术 Background technique

目前,国内外所研制的动力电池组能量管理系统一般都是从安全的角度来设计的。 At present, domestic battery pack developed by energy management systems are generally from a security perspective to design. 严格的来讲, 一般的电池管理系统仅具备电池监测的功能。 Strictly speaking, the general battery management system has only the function of the battery monitoring. 这种系统能对电池的状态参数进行监测,并将各类故障通过总线通讯技术报告给上位机。 This system can monitor the state of the parameters of the battery, and various types of fault reporting via bus communication technology to the host computer. 在安全角度上来讲,普通的电池管理系统大都通过模拟电路来控制电池的充电截止电压、放电截止电压和电池温度这几个参数,以确保电池不被损坏。 On the security point of view, most of conventional battery management system controlled by an analog circuit charge cutoff voltage of the battery, the discharge cutoff voltage and the battery temperature these parameters, in order to ensure that the battery is not damaged. 这样,它实际上最多只是简单的实现了均衡充电,没有均衡放电的功能。 In this way, it is actually up to simply achieve a balanced charge, there is no functional equilibrium discharge. 当一组电池中某一个电池出现放电截至电压时,整组电池就不能工作了,造成很大的资源浪费,降低了电动汽车的续使里程。 When one battery has a battery discharge voltage ended, the entire set of batteries will not work, resulting in a great waste of resources, reducing the mileage of electric vehicles continued. 而且,它对电池剩余电量(State of Charge,简称SOC)的估计一般是静态的,精度比较低,实时性不强。 Further, it is estimated remaining battery capacity (State of Charge, referred to as SOC) of a generally static, relatively low accuracy, real-time performance is not strong. 总而言之,这种动力电池管理系统只是基于安全来设计的,并不是真正意义上的能量管理系统,而且它只根据电池的充电、放电截至电压来判断充放电与否(可称之为两点控制),只能满足纯电动汽车的基本要求。 In summary, this power battery management system designed only for safety, not the real sense of the energy management system, and only the charging of the battery, the discharge voltage is determined as of whether or not the charge-discharge (may be referred to two o'clock Control ), can only meet the basic requirements of pure electric vehicles. 对于混合动力电动汽车,在控制策略中, 一般都要求电池工作在既不充饱也不放光的高效率工作段,这样这种两点控制的电池能量管理系统没有任何意义可言,它不能满足混合动力电动汽车的要求。 For hybrid electric vehicles, in the control strategy, generally require neither fully charged battery at high efficiency work not give her light segment, such that two of the battery energy management control system does not make any sense at all, it can not hybrid electric vehicles meet the requirements.

要实现真正意义上的电池能量管理系统,最主要的问题是电池状态的监测、电池SOC预测和电池均衡的实现,这也是技术难点所在。 To achieve the battery energy management system in the true sense, the main problem is to monitor the state of the battery, the battery SOC estimation and realization of cell balancing, which is the technical difficulty lies. 日益发展成熟的单片机系统能采集电池的电压、 电流和温度信号,釆用CAN总线技术使得管理电池的电子控制单元(Electric Control Unit, 简称ECU)与上位机可方便、实时地进行通讯,这使电池状态的监控易于实现。 Growing mature SCM system can collect the battery voltage, current and temperature signals, preclude the use of CAN bus that the electronic control unit management cell (Electric Control Unit, referred to as ECU) and PC can be easily and in real time communication, which makes monitor battery status is easy to achieve. 电池SOC是衡量蓄电池剩余电量的重要参数。 Battery SOC is an important parameter to measure the remaining battery capacity. 在车辆运行条件下实时而可靠地获得电池组SOC值,是电池管理系统最基本和最首要的任务。 Real-time and reliable access to battery pack SOC values ​​under operating conditions of the vehicle, the battery management system is the most basic and primary task. 根据电池组的SOC,可以预测电动汽车的续驶里程、控制电池的最大放电电流或调整电动车多能源动力总成的功率分配策略等。 SOC based on the battery pack, can predict the maximum discharge current driving range, electric vehicle battery control or adjust the power allocation strategy the electric vehicle power train and so on. 当然也可根据单电池SOC的大小分辨出电池间的性能差异,作为均衡充放电的依据来实现充放电均衡,保持电池之间的一致性,维持电池组正常工作及延长电池寿命。 Of course, according to the size of the cell can distinguish the performance difference between the SOC of the battery, charge and discharge as the basis for equilibrium to achieve balanced charging and discharging, to maintain consistency between the cells, maintaining normal operation of the battery pack and the battery life. 电池SOC预测技术在国内外都不太完善,特别是很难实现在线实时估计,且一般误差在10%左右。 Battery SOC prediction technology at home and abroad are not perfect, especially difficult to achieve online real-time estimates, and generally error of about 10%. 对于均衡充放电的实现,一般在国内外的研究工作中只考虑均衡充电,对均衡放电研究甚少。 For balanced charging and discharging of the previous work is generally considered the only charge equalization, the equalization discharge little studied. 在给每节电池都配备一个充电机之后,通过对充电使能信号的控制就可以简单实现电池的独立充电,从而实现均衡充电,而均衡放电的实现在技术上有很大的难度。 Giving each cell is equipped with a charger after charging by the signal of the control can be simply implemented independently of the rechargeable battery, in order to achieve a balanced charge, discharge and balanced realization is technically very difficult.

3发明内容 3 SUMMARY OF THE INVENTION

本发明的目的在于克服现有技术的缺点,提供一种集散式动力电池组动态均衡管理系统。 Object of the present invention to overcome the disadvantages of the prior art, there is provided a distributed type power battery management system dynamic equilibrium.

本发明的目的通过如下技术方案实现: Object of the present invention is achieved by the following technical solutions:

一种集散式动力电池组动态均衡管理系统,该系统包括电池监测子系统(7)、电池均衡子系统、电池管理子系统和上位机;所述电池监测子系统主要由多个单体电池采样模块组成, 每个单体电池采样模块分别通过电缆与电池组的一单体电池连接,各个单体电池采样模块之间采用单总线连接,并通过单总线与电池管理子系统连接;所述电池管理子系统包括以微控制器为核心的电池管理ECU、多通道通讯电路和总线通讯模块以及通道选通控制信号模块, 该ECU是以具有I/O模块和SCI、 SPI和CAN通信模块的集成IC芯片CPU为核心,辅以外围电路组成的;上位机通过通讯总线与电池管理子系统的总线通讯模块连接;所述电池均衡子系统由多个单体电池均衡模块与通道选择电路连接组成,单体电池均衡模块分别与电池管理子系统)连接,通道选择电路分别与电池组的单 One kind of distributed power dynamic balancing battery management system includes a battery monitoring subsystem (7), the battery equalization subsystem, the host computer and battery management subsystem; the battery monitoring subsystem is mainly composed of a plurality of cell samples modules, respectively, each cell module sample cell via a cable connected to the battery pack, a single bus connection between the respective unit cells sampling module, and connected by a single bus with a battery management subsystem; said battery management subsystem includes a microcontroller core battery management ECU, the multi-channel communication circuit and the bus communication module and a control channel signal gating module is integrated with the ECU I / O modules and SCI, SPI, and CAN communication module the IC chip CPU core, supported by the peripheral circuit; a host computer connected via a communication bus and battery management subsystem bus communication module; a plurality of cell balancing subsystem selected by cell balancing circuit module connected to form the channel, cell balancing module is connected to the battery management subsystem), the single channel selection circuit of the battery pack, respectively, 体电池和电池管理子系统连接。 Body cells and battery management subsystem is connected.

所述单体电池釆样模块包括分压电路、分流器、滤波电路、电池监测芯片DS2348、驱动电路和高速光藕隔离电路;所述分压电路和分流器一端分别与充电单体电池连接,另一端分别与滤波电路连接,滤波电路与单体电池釆样模块连接,电池监测芯片DS2348通过单总线与驱动电路连接,驱动电路通过单总线与高速光藕隔离电路连接,高速光藕隔离电路通过单总线与电池管理子系统的多通道通讯电路连接;其它电池检测模块通过单总线与多通道通讯电路连接;电池监测芯片DS2348还与DC/DC隔离电源连接。 The module comprises a sample cell preclude dividing circuit, shunt, a filter circuit, the battery monitor chip DS2348, a drive circuit and a high speed optical coupling isolation circuit; said voltage dividing circuit and the shunt are connected to one end of the charging cell, the other terminal connected to the filter circuit, the filter circuit with the sample cell module is connected Bian, battery monitoring DS2348 chip is connected to a driving circuit via a single bus, the bus driving circuit via a single high-speed optical coupling isolation circuit is connected, via a high-speed optical coupling isolation circuit single cell management subsystem bus and a multi-channel communication circuit; detecting the other battery modules are connected via a single bus with a multi-channel communication circuit; DS2348 battery monitor chip further connected to an isolated power supply DC / DC. 单体电池采样模块对单体电池的状态监测是采用单总线工作方式,进出芯片的数据通过一根数据、地址、电源复用线完成。 Cell module samples the state of the monitoring cell bus is a single mode of operation, the data out of the chip via a data, address, multiplexing the power line is completed. 电池监测子系统7与电池管理子系统之间的通讯是依靠单总线来完成的,电池管理子系统与上位机是通过通讯总线(如单总线、CAN总线、FlexRay总线等)来完成。 7 between the battery monitoring subsystem and the battery management subsystem is to rely on a single communication bus to complete a battery management subsystem with the host computer is accomplished via a communication bus (such as a single bus, CAN bus, FlexRay bus, etc.).

所述单体电池均衡模块包括直流/直流(DC/DC)斩波电路、隔离驱动和脉宽调制(PWM) 控制器,所述DC/DC斩波电路一端与高压总线连接,另一端与通道选择电路连接;所述DC/DC 斩波电路还通过隔离驱动与PWM控制器连接,PWM控制器分别与电池管理子系统连接,接收来自电池管理子系统的充电使能、过温保护、过流保护、过压保护和充电强度的控制指令。 The cell balancing module comprises a DC / DC (DC / DC) chopper circuit, isolated drive and pulse width modulation (PWM) controller, the DC / DC chopper circuit connected to one end of the high voltage bus, the other end of the channel selection circuit; the DC / DC chopper circuit is also connected through an isolation driven PWM controller, the PWM controller is connected to the battery management subsystem, receiving the charge from the battery management subsystem is enabled, overtemperature protection, overcurrent control command protection, overvoltage protection and charge strength. 电池均衡子系统根据电池管理子系统的指令,对需要均衡充电的电池进行均衡充电。 The battery cell balancing subsystem management subsystem commands necessary to equalize charge of a battery charge equalization. 充电使能信号给每个充电模块提供一个是否充电的开关量信号,充电电流控制信号是控制应以多大的电流对蓄电池进行充电。 Charge enable signal whether a switch signal to each charging module for charging, a charging current control signal to control how much current should charge the battery. 在电池均衡子系统中,电池管理子系统发来的控制指令,包括使能信号和充电强度信号通过隔离之后,可以直接作为脉宽调制输出模块的控制参数,来控制充电机的开关以及充电强度,这样可以实现该电池均衡子系统的开关与充电强度的调节。 In the battery equalization subsystem, the battery management subsystem sent by the control command comprises a charging enable signal and intensity signal after passing through the separator can be directly used as a control parameter of the pulse width modulation output module to control the switch and the charging intensity Charger , so that the intensity adjustment switch and the battery charging subsystem equalization can be achieved. 电池均衡模块在功能上相当于一个可程序控制的智能充电机。 Balancing the battery module corresponds to a smart charger program controlled in function.

所述通道选择电路优选为矩阵开关,所述矩阵开关是由nxm个开关组成矩阵,每一幵关有两种可选择的连接方式,其中n为单体电池均衡模块的个数,m为单体电池5的个数,l《n 《m, n和m为正整数,每一个单体电池均衡模块2可以为m个单体电池中的任何一个进行按需均衡充电,n个单体电池均衡模块可以同时为m个单体电池中的n个电池进行均衡充电。 The channel selection matrix switch circuit preferably, the matrix switch is composed of nxm switch matrix, each Jian off two alternative connections, where n is the number of cell balancing module, m single the number of the battery body 5, l "n" m, n, and m is a positive integer, each of the cell balancing module 2 may be a demand charge equalization any cell in the m, n is a cell equalization module can simultaneously equalizing charge into m of the n cell batteries. 均衡充电模块的配备不是采用以前的将整个动力电池组(由m个单体电池组成,m>l, m为正整数) 每个单体电池对应一个车载充电模块的做法,而是配备n (1《n《m的整数)个车载充电模块, 这n个充电模块通过通道选择电路与电池组连接,通过电池管理ECU控制,动态地为电池组m 个电池中的n个剩余电量(即SOC)最低的单体电池按需充电,从而实现动态巡检均衡充电功能。 With equalizing charging module instead of using the entire previous power battery (unit cell composed of m, m> l, m is a positive integer) each cell corresponds to an on-board charging module approach, but with n ( "n" m is an integer of 1) a vehicle charging modules, the n rectifiers via the channel selection circuit and the battery pack is connected, by a battery management ECU controls dynamically battery pack of m cells in the n remaining battery (i.e., SOC ) minimum cell charge demand, in order to achieve dynamic equilibrium charging inspection.

所述电池管理子系统和电池监测子系统通过单总线通讯,以获取各单体电池的状态信息,在对数据进行处理之后,发出对电池均衡子系统的控制信号。 The battery management subsystem and a single battery monitoring subsystem bus communication, each cell to obtain status information, after processing the data, issues a control signal to the cell balancing subsystem. 电池管理子系统可以通过通讯总线与上位机进行通讯。 The battery management subsystem can communicate with the host computer via the communication bus. 电池管理子系统ECU主程序调用电流信号采集、电压信号采集、 温度信号采集子程序,然后通过运算处理、进行充电使能控制、充电电流控制和总线通讯控制。 Battery ECU main routine call management subsystem collecting current signal, voltage signal acquisition, the signal acquisition subroutine temperature, and then arithmetic processing, enabling control charged, the charging current control and communication control bus.

本发明相对于现有技术具有如下优点和有益效果: With the present invention has the following advantages and benefits over the prior art:

(1) 电池监控系统采用单总线局域网,现场信号与电池管理ECU有很好的隔离,这种 (1) a battery monitoring system uses a single local area network bus, and the battery management ECU field signals have a good isolation, such

基于数字信号的隔离对参数测量的精度有很好的保证。 Based on the isolated digital signal to ensure good accuracy of measurement parameters.

(2) 电池的充放电均衡采用一组电池配备不少于或等于单体电池个数个充电机的方式, 这样电池的均衡控制更为灵活,避免了一对一的配备方式,降低了成本,提高了系统的可靠性。 Charging and discharging (2) by way of a battery cell balancing with less than or equal to the number of cell charging machine, such a cell balance control is more flexible, with one-way avoided, reducing the cost improve the reliability of the system. ' '

(3) 所形成的新系统具有紧凑的拓扑布局、实现了集中监控,分散动态均衡的管理方式, 它具备优良的调节控制性能和较高的可靠性。 The new system (3) is formed with a compact topology, to achieve a centralized control, decentralized dynamic equilibrium manner, it has excellent control performance and adjusting high reliability.

附图说明 BRIEF DESCRIPTION

图1是本发明实施例1组成结构示意图; FIG 1 is a schematic structural diagram of an embodiment of the composition of the present invention;

图2是图1中单体电池采样模块的原理框图; 图3为图1中电池均衡模块的原理框图; 图4为图1中矩阵开关型的通道选择电路的原理图; 图5为实施例2的分组通道选择开关原理图。 FIG 2 is a block diagram of a sampling module of FIG cell; FIG. 3 is a schematic block diagram of a cell balancing module 1; FIG. 4 is a switching circuit selecting a channel matrix of FIG. 1 is a schematic diagram; FIG. 5 is an embodiment 2 packet channel selection switch schematic. 具体实施方式 Detailed ways

为进一步理解本发明,下面结合附图和实施例对本发明作进一步的说明,但本发明要求保护的范围并不局限于实施例表述的范围。 For a further understanding of the present invention, the following embodiments in conjunction with the drawings and embodiments of the present invention will be further described, the scope of the present invention, the scope of the claims is not limited to the embodiment of the expression.

该发明的系统组成及工作原理,现以多通道选择电路为矩阵开关的方案为例,结合图2〜 图5进行阐述。 System components and working principle of the invention is to select the multi-channel matrix switch circuit as an example embodiment, in conjunction with FIG. 2 ~ 5 are set forth in FIG. 实施例1 Example 1

如图1所示, 一种集散式动力电池组动态均衡管理系统包括电池监测子系统7、电池均衡子系统l、电池管理子系统12和上位机10;电池监测子系统7主要由多个单体电池采样模块组成,每个单体电池采样模块分别通过电缆15与电池组4的一单体电池5连接,各个单体电池采样模块之间采用单总线9连接,并通过单总线9与电池管理子系统12连接;电池管理子系统12包括以微控制器为核心的电池管理ECU、多通道通讯电路23和总线通讯模块以及通道选通控制信号模块,该ECU是以具有I/0模块和SCI、 SPI和CAN通信模块的集成IC 芯片CPU为核心,辅以外围电路组成的。 1 A Distributed Dynamic balancing battery power management system includes a battery monitoring subsystem 7, L sub-cell balancing, battery management subsystem 12 and the host computer 10; a battery monitoring subsystem 7 is mainly composed of a plurality of single body cell sampling modules, each of the cell modules are connected to sampling a battery cell 54 via the cable 15, a single bus 9 is connected between the respective sampling cell module, and the battery via a single bus 9 connection management subsystem 12; a battery management subsystem 12 comprises microcontroller core battery management ECU, the multi-channel communication circuit 23 and the bus communication module and a control channel signal gating module, the ECU is having a I / 0 module and integrated IC chip CPU SCI, SPI, and CAN communication module as the core, supplemented by a peripheral circuit thereof. 上位机10通过通讯总线11与电池管理子系统12 的总线通讯模块连接;所述电池均衡子系统l由多个单体电池均衡模块2与通道选择电路3 连接组成,各单体电池均衡模块2通过信号线13分别与电池管理子系统12连接,通道选择电路3分别与电池组4的单体电池5连接,并通过信号线14和电池管理子系统12连接连接。 PC 10 is connected via the communication bus 11 and battery management subsystem bus communication module 12; l of the cell balancing of a plurality of sub-module 2 and the cell balancing circuit 3 composed of channel selection, each of the cell balancing module 2 It is connected by a signal line 13 and battery management subsystem 12, the channel selection circuit 3 are connected to the battery cell 54 and is connected via a signal line 14 and battery management subsystem 12. 电池组4与高压总线6连接。 The battery pack 4 is connected to the high voltage bus 6. 该系统中,电池管理子系统的ECU处理过后的信号可以经过通讯模块将需要的信号发送给上位机10,同时电池管理子系统12还通过充电使能、充电强度控制和通道选择信号经信号线13和14来控制电池均衡子系统1。 In this system, the battery management subsystem ECU may be subjected to signal processing after the communication module transmits a signal to the host computer needs to 10, while the battery management subsystem 12 through the signal line via the charge enable signal, the charging intensity control and channel selection 13 and 14 to control a cell balancing subsystem. 电池均衡子系统1的电源由电池组高压总线6提供(图中未画出),电池均衡子系统的输出通过电缆16连接到电池组4上,中间经过了通道选择电路3的选择。 Battery equalization subsystem is powered by a battery pack 1 is provided high voltage bus 6 (not shown), the battery equalization subsystem output is connected to the battery pack 4 via cable 16, through the intermediate channel selection circuit selects 3.

单体电池采样模块的原理如图2所示,单体电池采样模块包括分压电路19、分流器25、 滤波电路20、电池监测芯片DS2348、驱动电路21和高速光藕隔离电路22;所述分压电路19和分流器25—端分别与充电单体电池5连接,另一端分别与滤波电路20连接,滤波电路20与电池监测芯片DS2348连接,电池监测芯片DS2348通过单总线9与驱动电路21连接, 驱动电路21通过单总线9与高速光藕隔离电路22连接,高速光藕隔离电路22通过单总线9 与电池管理子系统12的多通道通讯电路23连接;其它电池检测模块通过单总线与多通道通讯电路23连接;电池监测芯片DS2348还与DC/DC隔离电源24连接。 Principle cell sampling module shown in Figure 2, cell sampling module comprises a voltage dividing circuit 19, shunt 25, filter circuit 20, the battery monitor chip DS2348, a driving circuit 21 and the high-speed optical coupling isolation circuit 22; the end of the voltage dividing circuit 25 and the splitter 19 are connected to the rechargeable cell 5, the other end connected to a filter circuit 20, filter circuit 20 is connected to the battery monitor chip DS2348, DS2348 chip by a single battery monitoring bus 21 to the drive circuit 9 connection, the drive circuit 219 is connected to the high-speed optical coupling isolation circuit 22 through a single bus, a high speed optical coupling isolation circuit 229 is connected to the battery management subsystem 12 is multi-channel communication circuit 23 via a single bus; other battery modules is detected by a single bus multi-channel communication circuit 23 is connected; battery monitoring DS2348 chip also isolated power supply 24 is connected to the DC / DC. 其工作原理:首先单体电池5的电压通过分压电路19分压后,经由滤波电路20.的处理,连接到电池监测芯片DS2348,而单体电池5的充电电流信号是经过分流器25转换为电压信号,再经过滤波电路20连接到电池监测芯片38。 Its working principle: First, the cell voltage after dividing circuit 5 by dividing 19, via a filter 20. The processing circuit points, connected to a battery monitor chip DS2348, the cell charging current signal 5 is converted via splitter 25 voltage signal, and then through the filter 20 is connected to the battery monitoring circuit chip 38. 电池监测芯片DS2348自带由温度检测模块,其电源由DC/DC DS2348 battery monitor chip built by the temperature detection module, which is powered by the DC / DC

6隔离电源24提供。 Isolated power supply 24 provides 6. 电池监测芯片DS2348采集到的数据通过单总线来传输。 DS2348 chip battery monitoring data collected is transmitted via a single bus. 数字信号经过单总线通讯电缆9后连接到一个放大驱动电路21上,然后经过高速光藕隔离电路22后发送到单总线上。 After a single digital signal bus communication cable 9 is connected to a drive amplifying circuit 21 and then sent to the bus after a single high-speed optical coupling isolation circuit 22. 单总线上还存在很多其它电池的检测模块,通讯电路23中带有一些多芯插座,以连接这些电池检测模块。 There are many other battery module is detected on a single bus, the communication circuit 23 with a number of multi-pin socket, to connect the battery detection module.

图3为电池均衡子系统1的电池均衡模块2的原理图。 FIG 3 is a battery equalization subsystem battery equalization module 1 is schematic diagram 2. 如图3所示,单体电池均衡模块2包括DC/DC斩波电路26、隔离驱动29和PWM控制器28,所述DC/DC斩波电路26—端与高压总线6连接,另一端与通道选择电路3连接;所述DC/DC斩波电路26还通过隔离驱动29与PWM控制器28连接,PWM控制器28分别与电池管理子系统12连接,接收来自电池管理子系统12的充电使能、过温保护、过流保护、过压保护和充电强度的控制指令。 3, the cell balancing module 2 comprises a DC / DC chopper circuit 26, the spacer 29 and the PWM driving controller 28, the DC / DC chopper circuit 26- bus 6 is connected to the high voltage end and the other end channel selection circuit 3 is connected; the DC / DC chopper circuit 26 through a drive spacer 29 and the PWM controller 28 is connected, the PWM controller 28 is connected to the battery management subsystem 12, respectively, so that the reception charge from the battery management subsystem 12 can control command overtemperature protection, overcurrent protection, overvoltage and charge strength. 电池均衡模块2在功能上相当于一个可程序控制的智能充电机。 Balancing the battery module 2 corresponds to a program-controlled functions on the smart charger. 工作时,充电使能控信号块给充电模块2提供一个是否充电的开关量信号,充电电流控制信号是控制应以多大的电流对蓄电池进行充电。 In operation, the charge enable signal block control signal to the charging switch module 2 provides a charging whether the charging current control signal to control how much current should charge the battery. 在电池均衡子系统l中,来自电池管理子系统12的控制指令,包括使能信号和充电强度信号通过隔离之后,可以直接作为脉宽调制输出模块的控制参数,来控制充电模块2的开关以及充电强度,这样可以实现电池均衡子系统的开关与充电强度的调节。 L battery equalization subsystem, a control command from the battery management subsystem 12, including a charging enable signal and intensity signal after passing through the separator can be directly used as a control parameter of the pulse width modulation output module to control the charging switch module 2 and charging intensity, the charging intensity adjustment switch so that the battery equalization subsystem may be implemented. 主电路是电池组高压总线6通过DC/DC斩波电路26后变成单个电池均衡电压。 The main circuit is a battery pack voltage bus 6 / DC chopper circuit into a single cell by a DC voltage equalizer 26 after. 经过通道选择电路3 后最终连接到需要均衡充电的单体电池5上。 After the required passage ultimately connected to a balanced charge cell selecting circuit 5 after 3. DC/DC斩波电路26是由PWM控制器28来控制的,PWM控制器28产生的PWM波经过隔离驱动电路29后可以直接驱动斩波电路中开关管。 DC / DC chopper circuit 26 is controlled by the PWM controller 28, the controller 28 generates PWM wave PWM 29 through the drive circuit can be driven directly isolated chopper circuit switch. PWM控制器28的控制信号由电池管理子系统12提供,在该模块中也自带有一些温度、 电流和电压采集模块,它们为PWM控制器28提供强制停止工作的信号,以保证安全。 PWM controller 28 a control signal is provided by a battery management subsystem 12, the module also comes with a number of temperature, current and voltage acquisition module, which provides a signal for forcibly stopped PWM controller 28, to ensure safety. 电池管理子系统12在采集到各电池的状态后,会发出通道选择信号来控制通道选择电路3,对各需要均衡充电的电池进行充电。 The battery management subsystem 12 after collection to the state of each cell, channel selection signal will be issued to the control channel selection circuit 3, the respective necessary to equalize charge batteries. 同时,它还会输出充电使能信号、充电强度信号以及过温过流过压保护信号。 At the same time, it also outputs a charge enable signal, and over-temperature strength of the signal charge over-current protection signal. 充电使能信号控制PWM波的输出与否,电池管理子系统经过D/A转换电路27后的充电强度信号调节PWM波的占空比以达到控制充电电流大小的目的。 Charge enable signal output PWM wave control or not, the battery management subsystem 27 after charging the signal strength after D / A conversion circuit to adjust the duty cycle of the PWM wave to control the charge current object.

图4为矩阵开关型的通道选择电路3的原理图。 FIG 4 is a matrix-type channel selection switch circuit schematic of FIG. 3. 如图4所示,通道选择电路3为矩阵开关,所述矩阵开关是由nxm个开关组成矩阵,每一开关有两种可选择的连接方式,其中n为单体电池均衡模块2的个数,m为单体电池5的个数,1《n《m, n和m为正整数,每一个单体电池均衡模块2可以为m个单体电池中的任何一个进行按需均衡充电,n个单体电池均衡模块可以同时为m个单体电池中的n个电池进行均衡充电。 4, the channel selection switch matrix circuit 3, the switch matrix is ​​a matrix composed of nxm switches, each switch there are two alternative connections, where n is the number of cell balancing module 2 , m is the number of the cells 5, 1 "n" m, n, and m is a positive integer, each of the cell balancing module 2 may be a demand charge equalization any cell in the m, n is a cell balancing module may simultaneously into m of the n cell battery charge equalization. 这n个充电模块通过矩阵开关式通道选择电路与电池组连接,通过电池管理ECU控制,动态地为电池组m个电池中的n 个剩余电量(即SOC)最低的单体电池按需充电,从而实现动态巡检均衡充电功能。 The n type charging switch modules through the matrix channel selection circuit connected to the battery pack, the battery management ECU by controlling dynamically the battery group of m n remaining battery charge (i.e., SOC) of the lowest cell charge demand, in order to achieve dynamic equilibrium charging inspection. 其工作原理是:当电池管理子系统12判断出电池组4中m个单体电池5的SOC后,经过对比分析,判断出其中n个SOC最低的单体电池5,并计算出这n个单体电池5各自所需的均衡充电电流大小,发出控制信号给通道选择开关3及电池均衡子系统1,电池均衡子系统l依据发来的指令对n个SOC最低的单体电池进行均衡充电。 Its working principle is: after the battery management subsystem 12 determines that the battery cell 4 the m SOC 5, through comparative analysis, it is determined where the n lowest SOC cell 5, and calculate the n 5 required for each cell equalizing charge current, a control signal is sent to a channel selection switch 3 and a cell balancing subsystem, subsystem sent l cell balancing based on an instruction of the n lowest SOC cell equalizing charge . 矩阵开关优点是,n个电池均衡模块2没有与m个单体电池5—一绑定,而是根据需要,动态分配为哪一些单体电池进行均衡。 Matrix switch advantage Yes, n battery modules 2 is not balanced with a 5- m-th cell binding, but equalization is needed which of the cells, dynamic allocation. 一旦某个电池均衡模块2出现故障,电池管理子系统12可以停止其工作,则剩下得(nl)个电池均衡模块2可以正常工作,每次可以同时为m个单体电池5中的(nl)个进行均衡。 Once a cell balancing module 2 fails, the battery management subsystem 12 may stops its operation, the remaining available (nl) battery equalization module 2 can work normally, each of m may be simultaneously in the cell 5 ( nl) th equalize. 如此循环,m个单体电池均能得到均衡管理。 This cycle, m can give a cell balancing management.

本发明的采用了系统的设计方法,在电池管理子系统12中,主程序调用电流信号采集、 电压信号采集、温度信号采集子程序,由电池监测子系统7采集相关信息,然后通过运算处理、 进行充电使能控制、充电电流控制和CAN总线通讯。 The present invention is a method for design of the system, the battery management subsystem 12, the main program calls the current signal acquisition, signal acquisition voltage, temperature signal acquisition subroutine, the battery 7 by the monitoring information collection subsystem, then the arithmetic processing, enable control charging, the charging current control and cAN bus communication. 电池监测是电池管理的工作任务之一, 它对电池的状态进行采集。 Battery monitoring is one of the tasks of battery management, battery status of its acquisition. 对采集到的数据进行处理的过程当中,程序会以某种特定的算法来鉴别电池的状态,例如电池荷电状态等,进而判断不均衡的电池和各类故障信号,包括温度保护信号、电压保护信号和电流保护信号等。 The process of the collected data is processed, the program state algorithm to identify a particular cell, such as a battery state of charge and the like, so as to determine the battery and various unbalanced fault signal, including a temperature protection signal, the voltage and a current protection signal protection signals. 在需要对某个电池进行均衡充电时,由电池管理子系统发出电池选通信号、充电使能信号和充电强度信号来控制对需均衡电池的选择、 充电机的开关和充电强度的调节。 When a battery needs to be balanced charging, the battery emits the strobe signal from the battery management subsystem, the charge enable signal and intensity signal to control the charging of the selected cell for an equalizer, the charging intensity adjustment switch and charging machine. 电池监测子系统7和各单体电池采样模块及电池管理子系统12是通过单总线来通讯的,通讯严格遵守单总线协议。 7 and the battery monitoring sub-module of each cell sample and battery management subsystem 12 through a single bus communication, strict adherence to a single communication bus protocol. 在电池管理子系统在开机之后,首先进行单总线的自检,判别单总线的工作是否正常,正常的话,则开始与各个单总线节点的通讯,实现各单体电池5的巡检。 In the battery management subsystem in the boot, the first self-test a single bus, whether the bus is working properly determine a single, normal, then began to communicate with each single bus nodes, each single cell to achieve inspection 5. 每个电池监采样块都有一片电池监测芯片DS2438,负责采集电池的状态。 Each sample block has a battery monitor battery monitor chip DS2438, the state of charge of the battery is acquired. 在电池管理子系统12巡检的过程中,首先对芯片进行复位动作,在收到应答信号之后,发出电压、电流和温度转换指令,然后是等待,在转换成功之后,电池管理子系统便开始读取转换的值。 In the inspection process of the battery management subsystem 12, first chip reset operation, after receiving the response signal issued voltage, current and temperature conversion command, and then waits, after a successful conversion, the battery management subsystem starts reading the converted values. 在一轮电池巡检结束之后,电池管理子系统便开始新一轮的巡检。 After the end of a battery inspection, battery management subsystem will begin a new round of inspection. 在这个过程中,电池管理子系统12还同时与上位机10通过CAN总线(或HexRay等其他总线)进行通讯,在分析采样数据之后,将各类信息报告给上位机IO。 In this process, the battery management subsystem 12 also simultaneously with the host computer 10 via the (bus or the like, or other HexRay) CAN bus communication, after analyzing the sample data, the types of information reported to the host computer IO.

对电池状态的采集一般需要采集的参数有:总线电压、总线电流、单电池电压、单电池均衡电流和电池温度。 Collection of the battery state parameters generally need to be collected: bus voltage, bus current, the cell voltage, the cell current and the battery temperature equalization. 总线电压的获取必须具备高精确度,可以通过高精度的隔离电压采集模块来实现。 Obtaining bus voltage must have high accuracy, high accuracy can be achieved by isolation voltage acquisition module. 电流采样可以用具备高精度的隔离电流采集模块。 Current sampling can be isolated with high-precision current acquisition module. 对单体电池参数的采集,由于由单体电池串连构成的电池组中,每节电池的地电位是不一致的,并且电势相差特别大。 The collected parameters of the cell, since the series battery group consisting of a cell, each cell is inconsistent ground potential, and the potential difference is particularly large.

简单的用多路A/D采样是不能够达到目的的。 Simple multi channel A / D sample is not able to achieve the objective. 本发明对单体电池电压信号的隔离,最终将信号能共地。 Isolation of cell voltage signals according to the present invention, the signal can be eventually common ground. 在对信号进行隔离的时候,本发明采取光耦隔离芯片对数字量进行隔离。 When the signal isolation, the present invention takes the opto isolator chip digital isolation.

实现电池状态的采集一般有如下方案:本实施例采用独立采样方案避免了巡检采样的缺点,通过给每个电池配备独立的电池状态监测模块,各采集系统中通过数据来通讯。 Battery status acquisition achieve the following general scheme: the present embodiment employs an independent sampling scheme avoids the drawbacks of sampling inspection, by providing each cell with a separate battery state monitoring module, each of the acquisition system to communicate via the data. 在本发明中,电池监测子系统7采用以DS2438芯片为核心的电池采样模块。 In the present invention, battery monitoring subsystem employed to 7 DS2438 chip as the core sampling module battery. DS2438是DALLAS公司 DS2438 is DALLAS company

生产的专用电池检测芯片,它是单总线工作方式,进出芯片的数据通过一根数据线、地址、 Production of special battery test chip, which is a single bus mode of operation, and out of the chip data through a data line, an address,

电源复用线完成。 Multiplexing done with power lines. 电池管理子系统采用以Motorola的高性能16位HCS12系列微控制器的 Battery management subsystem employed to Motorola's family of high performance 16-bit microcontrollers HCS12

MC9S12DB128单片机为核心的ECU,该芯片集成了丰富的I/0模块和SCI、 SPI、 CAN等一系 MC9S12DB128 microcontroller core of ECU, the integrated chip rich I / 0 module and SCI, SPI, CAN, etc. a series of

列通信模块,与上位机通过CAN总线来进行通讯。 Column communications module to communicate with the host computer via the CAN bus. 本发明电池监测子系统7采用单总线局域网, Battery monitoring subsystem 7 of the present invention, a single local area network bus,

现场信号与电池管理子系统12有很好的隔离,这种基于数字信号的隔离对参数测量的精度有 Field signals and battery management subsystem 12 has a good isolation, which are based on the isolated digital signal parameter measurement accuracy

很好的保证。 Good guarantee. 电池的充放电均衡采用一组电池配备不多于电池个数个充电模块的方式,避免 Balancing battery charge and discharge using a set of batteries with no more than the number of battery charging module according avoid

了一对一的配备方式,降低了成本,提高了系统的可靠性。 With a one-way, reduce costs and improve system reliability. 本系统在各种模式下的工作情况如下- In operation of the system in each mode is as follows -

(1) 停车均衡模式。 (1) Parking balanced mode. 如果在车辆行驶的过程中的电池均衡过程没有结束,车辆停止行驶 If the cell balancing process in the process of vehicles is not over, stop driving the vehicle

后,只要不要切断整车高压和24V低压,系统仍然继续进行电池均衡。 After just do not cut off the vehicle 24V low voltage and high voltage, cell balancing system still continues.

(2) 停车外接充电模式。 (2) Stop the external charging mode. 该模式可以实现电池的定期均衡充电维护。 This mode may be implemented to maintain charge equalization of the battery periodically. 电池管理系统有一个模式选择开关,即均衡模式和充电模式。 The battery management system has a mode selection switch, i.e. a balanced mode and a charge mode. 电池在停止使用后,如果剩余电量不足,可以外接充电机对电池均衡。 Stop using the battery if the remaining power is insufficient, the battery charger may be external equilibrium. 外接充电有3种模式,即直充模式、均充模式和混合快充模式。 A plug has three modes, i.e., direct charge mode, both the charge mode and mixed fast charge mode. 在直充模式下,外接充电机直接连接电池组,给电池组串连充电。 In the direct charge mode, directly connected to an external battery charger, charging the battery pack in series. 此时充电电流比较灵活,可以大电流充电也可以小电流充电,而电池电池均衡子系统工作于均衡模式。 At this time, the charging current is relatively flexible, it may be smaller large current charging current charging, and the battery cell balancing subsystem operates in a balanced mode. 在均充模式下,外接充电机不直接连接电池组,而是只连接电池电池均衡子系统,此时电池均衡子系统工作于充电模式。 In both charge mode, an external battery charger set is not directly connected, but only the connection of the battery cell balancing subsystem and the battery equalization subsystem operates in a charging mode. 这种模式需要同时切断电池电池均衡子系统与电池组的连接。 This mode need to disconnect the battery cells of the battery pack balancing subsystem. 在这种均充模式下, 电池电池均衡子系统对电池独立充电,以达到电池均衡目的。 In this mode, both the charge, the battery cell balancing the separate charging the battery subsystem, in order to achieve battery equalization purposes. 另外一种是混合快充模式,即现直充,再均充,这样可以提高充电和均衡的效率,达到快充的目的。 Another mixed fast charge mode, i.e., direct charge current, and then are filled, so that the charging efficiency can be improved and balanced to achieve the purpose of fast charge.

(3) 行车均衡模式。 (3) Driving balancing mode. 车辆在行驶过程中,如果发现某个电池存在不均衡的现象,电池电池均衡子系统将在电池组高压总线上取电来对不均衡的电池均衡。 During running of the vehicle, if the imbalance found a battery, the battery cell balancing will take power subsystem on the battery pack to a high voltage bus to the unbalanced cell balancing. 在行车过程中,判定哪个电池或者哪几个电池不均衡是由控制策略决定的。 In driving the process, determine which battery or batteries which of imbalance is determined by the control strategy.

(4) 行车电能反馈模式。 (4) drive power feedback mode. 这种模式是在电动汽车采用了电池均衡系统之后的一个很大的特别之处。 This model is an electric vehicle uses a lot of special after cell balancing system. 普通的电动汽车在进行电能反馈的时候,如果发电电压低于电池组电压,则只能通过DC/DC泵压之后再给电池组充电。 Give after a normal battery charging an electric vehicle is performed when the power feedback, if the generated voltage is lower than the battery voltage, only through the DC / DC pump pressure. 而电池电池均衡子系统的供给电压范围比较广泛,比如可以工作于150v—500v之间,这样即使发电电压低于电池组总电压,也可以通过电池电池均衡子系统来吸收反馈的电能。 Subsystem and the battery cell balancing supply voltage range is relatively wide, such as can be operated between 150v-500v, so that even when the generated voltage is lower than the total voltage of the battery, the electric energy can be absorbed by the battery cell balancing feedback subsystem. 这种模式需要电池管理ECU根据整车的当前状态来启动,它需要同时切断电池电池均衡子系统与电池组的连接。 This mode requires the battery to start the management ECU according to the current state of the vehicle, which need to disconnect the battery cells of the battery pack balancing subsystem.

(5) 行车充电模式。 (5) driving the charging mode. 这种模式会给混合动力电动汽车提供全新的行车充电方法。 This model will provide a new hybrid electric car charging driving method. 它不需 It does not require

要发电机提供高于电池组总线电压的高压,发电机工作于低转速时所产生的低压也可以通过 To provide a generator set higher than the battery bus voltage high and low pressure generator at low rotational speeds may be generated by

9电池电池均衡子系统来给电池均衡充电。 9 Battery equalization subsystem to charge the battery equalization. 这种模式也需要电池管理ECU根据整车的当前状态来启动,它需要切断电池电池均衡子系统与电池组的连接。 This model also requires the battery to start the management ECU according to the current state of the vehicle, it is necessary to cut the connection of the battery cells of the battery pack balancing subsystem. 实施例2 Example 2

图5为分组式通道选择开关的原理图。 FIG 5 is a packetized channel selector switch schematic. 如图所示,电池均衡模块2与小组电池之间通过1 对多的通道开关31连接。 As shown in FIG, 31 is connected through a 1-to-many channel switch between the battery cell group 2 and the equalization module. 为简化系统结构及降低成本,通道选择开关可以选用分组式管理。 To simplify the structure and reduce the cost of the system, the channel selection switch group management can be selected. 即将动力电池组的m个单体电池5在布置上分为n个小组,配备n个电池均衡模块3,每个电池均衡模块3与n小组电池一一对应连接。 a cell is about 5 m traction battery is divided into n in the group are arranged with n battery equalization modules 3, each of the cell balancing module 3 is connected to the battery group n correspondence. 电池监测子系统7和电池管理子系统12与实施例1相同。 Battery monitoring subsystem 7 and battery management subsystem 12 embodiment an example is the same. 这种方案的优点是每个电池均衡子系统固定管理l小组电池,通道开关结构简单,便于査错。 The advantage of this embodiment is that each battery equalization subsystem fixed cell group management l, channel switch structure is simple, easy troubleshooting. 其余部分的工作原理与实施例l相同。 It works with the rest of the same in Example l.

Claims (1)

1、一种集散式动力电池组动态均衡管理系统,其特征在于该系统包括电池监测子系统(7)、电池均衡子系统(1)、电池管理子系统(12)和上位机(10);所述电池监测子系统(7)主要由多个单体电池采样模块组成,每个单体电池采样模块分别通过电缆(15)与电池组(4)的一单体电池(5)连接,各个单体电池采样模块之间采用单总线(9)连接,并通过单总线(9)与电池管理子系统(12)连接;所述电池管理子系统(12)包括以微控制器为核心的电池管理ECU、多通道通讯电路(23)和总线通讯模块以及通道选通控制信号模块,该ECU是以具有I/O模块和SCI、SPI和CAN通信模块的集成CPU芯片为核心,辅以外围电路组成的;上位机通过通讯总线(11)与电池管理子系统(12)的总线通讯模块连接;所述电池均衡子系统(1)由多个单体电池均衡模块(2)与通道选择电路(3)连接组成,单体电池均衡模块(2)分别与 A Distributed Dynamic balancing battery power management system, characterized in that the monitoring system includes a battery subsystem (7), the battery equalization subsystem (1), the battery management subsystem (12) and PC (10); the battery monitoring subsystem (7) mainly composed of a plurality of unit cells sampling modules, each cell sampling modules are connected by a cable (15) and the battery pack (4) of a cell (5), each a single bus (9) connected between the sample cell module, and connected to a battery management subsystem (12) via a single bus (9); the battery management subsystem (12) comprises a microcontroller core cell ECU management, multi-channel communication circuit (23), and a bus communication module and a control channel signal gating module, the ECU is having I / O modules and SCI, SPI, and CAN communication module CPU integrated chip as the core, supplemented by a peripheral circuit thereof; host computer (12) in bus communication module connected to the battery management subsystem via the communication bus (11); said battery equalization subsystem (1) consists of a plurality of cell balancing module (2) and the channel selection circuit ( 3) connected to form, the cell balancing module (2), respectively 池管理子系统(12)连接,通道选择电路(3)分别与电池组(4)的单体电池(5)和电池管理子系统(12)连接;所述通道选择电路(3)为矩阵开关,所述矩阵开关是由n×m个开关组成矩阵,每一开关有两种可选择的连接方式,其中n为单体电池均衡模块(2)的个数,m为单体电池(5)的个数,1≤n≤m,n和m为正整数,每一个单体电池均衡模块(2)可以为m个单体电池中的任何一个进行按需均衡充电,n个单体电池均衡模块可以同时为m个单体电池中的n个电池进行均衡充电;所述单体电池采样模块包括分压电路(19)、分流器(25)、滤波电路(20)、电池监测芯片DS2348、驱动电路(21)和高速光藕隔离电路(22);所述分压电路(19)和分流器(25)一端分别与充电单体电池(5)连接,另一端分别与滤波电路(20)连接,滤波电路(20)与电池监测芯片DS2348连接,电池监测芯片DS2348通过单总线(9)与驱动电路(21)连 Pool management subsystem (12), the channel selection circuit (3), respectively, and the battery pack (4) of the cell (5) and a battery management subsystem (12); said channel selection circuit (3) for the matrix switch the switch matrix is ​​composed of n × m matrix switches, each switch there are two alternative connections, where n is the number of cell balancing module (2), m is a cell (5) number, 1≤n≤m, n and m are positive integers, each of the cell balancing module (2) can be equalized charge demand any one cell in a m, n is a cell balancing module can be balanced simultaneously charged into m of the n cell battery; the sampling module comprises a cell voltage dividing circuit (19), the splitter (25), a filter circuit (20), the battery monitor chip DS2348, a drive circuit (21) and the high-speed optical coupling isolation circuit (22); one end of said dividing circuit (19) and the splitter (25) are connected to the rechargeable cell (5), the other end of the filter circuit (20) connecting the filter circuit (20) connected to the battery monitor chip DS2348, DS2348 chip by a single battery monitoring bus (9) and the drive circuit (21) connected ,驱动电路(21)通过单总线(9)与高速光藕隔离电路(22)连接,高速光藕隔离电路(22)通过单总线(9)与电池管理子系统(12)的多通道通讯电路(23)连接;其它电池检测模块通过单总线与多通道通讯电路(23)连接;电池监测芯片DS2348还与DC/DC隔离电源(24)连接;所述单体电池均衡模块(2)包括DC/DC斩波电路(26)、隔离驱动(29)和PWM控制器(28),所述DC/DC斩波电路(26)一端与高压总线(6)连接,另一端与通道选择电路(3)连接;所述DC/DC斩波电路(26)还通过隔离驱动(29)与PWM控制器(28)连接,PWM控制器(28)分别与电池管理子系统(12)连接,接收来自电池管理子系统(12)的充电使能、过温保护、过流保护、过压保护和充电强度的控制指令。 The drive circuit (21) connected via a single bus (9) and the high-speed optical coupling isolation circuit (22), high-speed optical coupling isolation circuit (22) by a single bus (9) and battery management subsystem (12) is a multi-channel communication circuit (23); detecting the other battery modules are connected via a single bus with a multi-channel communication circuit (23); DS2348 chip also battery monitoring the DC / DC isolated power supply (24); said cell balancing module (2) includes a DC / DC chopper circuit (26), isolating the drive (29) and a PWM controller (28), the DC / DC chopper circuit (26) is connected with high voltage bus (6), and the other end of the channel selection circuit (3 ); said DC / DC chopper circuit (26) is also connected to the PWM controller (28) driven by a spacer (29), the PWM controller (28) are connected to the battery management subsystem (12), receiving from the battery charging management subsystem (12) is enabled, overtemperature protection, overcurrent protection, overvoltage protection and charging intensity control command.
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