CN2890947Y - Power battery management system for hybrid electric vehicle - Google Patents

Power battery management system for hybrid electric vehicle Download PDF

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Publication number
CN2890947Y
CN2890947Y CN 200620110480 CN200620110480U CN2890947Y CN 2890947 Y CN2890947 Y CN 2890947Y CN 200620110480 CN200620110480 CN 200620110480 CN 200620110480 U CN200620110480 U CN 200620110480U CN 2890947 Y CN2890947 Y CN 2890947Y
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module
circuit board
battery
voltage
cpu
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CN 200620110480
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杨亚联
秦大同
彭志远
任勇
周安健
赵川林
何培祥
胡明辉
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重庆长安汽车股份有限公司
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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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies related to electric vehicle charging
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

Abstract

The utility model provides a management system of a dynamic battery set for mix vehicle, which comprises two branch systems of a collection circuit board and a host control circuit board, wherein a single-group battery voltage collection module, a battery total voltage/ total current collection module of the collection circuit board connects with an I/O opening of the host control chip through a multi-circuit switching switch and an A/D transformation chip. The collection circuit board communicates with the host control circuit board through a CAN bus communication module, and an address interface of a non-easy losing data storage module of the control circuit board connects with the I/O opening of the host control chip CPU. A reading interface and a writing interface respectively connect with the reading interface and the writing interface of the host control chip CPU, and the I/O opening of the host control chip CPU respectively connects with a heavy current protection module, a temperature control module and an output terminal (CA) of a fault alarming module optical coupler. The utility model can promote the precision and speed of voltage collection of the system, the stability of data transmission in complex real operation mode of the whole vehicle, and the precision of single-group battery voltage collection and the anti-interference performance of the voltage collection process.

Description

一种混合动力汽车用动力电池组的管理系统 A hybrid vehicle battery power management system of the group

技术领域 FIELD

本实用新型属于汽车电子应用技术领域,具体涉及汽车的电池管理技术。 The present invention belongs to the technical field of automotive electronics applications, particularly relates to an automobile battery management technology.

背景技术 Background technique

用于混合动力电动汽车上的多个二次电池组是混合动力汽车体系中的关键控制部件,在它们经历高压串联及多次充、放周期后,这些电池组都可能出现组间的不平衡,这将大大影响电动汽车的动力供给,以及影响这些二次电池组的工作效率和使用寿命,会使整个系统的电量减少,因此,在工作状态下要实时检测电池组中各电池运行状态及性能好坏,包括单组电池电压、电池组总电压、电池温度、电池充放电电流、电池容量等,向主控制电路板动态报告所检测内容,同时接受主控制电路板发回的对策指令,是否要对电池组进行平衡、保护等一系列的电池管理工作。 A plurality of secondary battery on the hybrid electric vehicle is a hybrid vehicle critical control member in the system, they are subjected to high pressure in the series and repeated charge and discharge cycle after, these battery packs are possible imbalance among the groups this will greatly affect the power supply of electric vehicles, as well as affect the efficiency and service life of the secondary battery pack, will reduce the overall system power, therefore, each battery operation in working condition for a real-time detection and battery pack good or bad performance, include a single cell voltage, total voltage of the battery, battery temperature, battery charge and discharge current, battery capacity, circuit board dynamic reports the detected content to the main control, while receiving a control instruction from the main circuit board countermeasure sent back, Do you want to balance protect the battery and a series of management of the battery pack. 在已有技术中,见中国专利91107576.3、200310111783.2、02136609.8、95191121.X、200310111599.8、02127613.7、200410013807.5、02129322.8电池的平衡方面多是以串联形式为主,这种平衡方法时间长、工作电流小,还要解决同步问题和相对电池电压过高等问题;单组电池的电压采集方面多是以CPLD可编程逻辑分时对每组电池的电极电位进行采集,然后通过程序取正、负两极的电位差作为该组电池的端电压,但是在对每组电池正、负两极的电位采集过程中要间隔几毫秒,这有较大可能对计算电池的端电压存在一定的误差;在电流采集方面对电流采集的精度不高,这导致对电池的荷电状态(SOC)的估算不精确;在系统内部之间(采集板与主控制板)的信息通讯方面多采用单总线技术、串口通讯技术等,这导致整个系统在整车实际工况中的抗干扰能力不强。 In the prior art, see China patent 91107576.3,200310111783.2,02136609.8,95191121.X, balance 200310111599.8,02127613.7,200410013807.5,02129322.8 battery of multi-series is mainly in the form of this balancing method for a long time, operating current is small, also to solve the synchronization problem, and problems such as the relative battery voltage is too high; the single cell voltage acquisition aspect of the CPLD is a programmable logic division multiple electrode potential of each cell is collected, then by a program takes a positive and negative poles of a potential difference the terminal voltage of the battery pack, but in each of the battery positive and negative poles of the potential of the collection process interval of a few milliseconds, which is more likely there are some errors on the terminal voltage of the battery is calculated; in terms of current collecting current pickup the accuracy is not high, which results in an estimate of the state of charge (SOC) of imprecision; multiple single bus, serial communications technology (capture board and the main control board) information between the internal communications system, which cause the entire system anti-jamming capability in actual working conditions in the vehicle is not strong.

发明内容 SUMMARY

本实用新型的目的是为克服已有技术的不足之处,设计出一种混合动力汽车用动力电池组的管理系统,提高系统的电压采集精度和速度,在整车复杂的实际工况中数据发送的稳定性,以及单组电池电压采集精度以及电压采集过程中的抗干扰性。 The object of the present invention to overcome the deficiencies of the prior art, to design a hybrid vehicle with a battery power management system, to improve the accuracy and speed voltage acquisition system, data in complex real vehicle operating condition stability transmitted, and single-cell interference voltage pickup voltage accuracy and collection process.

本实用新型提出的混合动力车用动力电池组的管理系统由采集电路板和主控制电路板两大子系统构成。 Management system of the hybrid battery power pack of the present invention proposed consists acquisition circuit board and the main control circuit board two subsystems.

采集电路板:主要包括主控芯片CPU、单组电池电压采集模块、电池总电压/总电流采集模块、电池温度采集模块、电池均衡模块以及CAN总线通讯模块。 Acquisition circuit board: the master chip including the CPU, the single cell voltage acquisition module, total cell voltage / current total acquisition module, the battery temperature acquisition module, and the cell balancing module CAN bus communication module. 其中单组电池电压采集模块、电池总电压/总电流采集模块将采集到的单组电池电压、电池组总电压和总电流分别通过多路转换开关、A/D转换芯片后,与主控芯片CPU的I/O口连接;采集电路板上的主控芯片CPU通过CAN总线通讯模块与主控制电路板上的CAN总线通讯模块进行连接,另外通过RS232串口通讯模块PC机连接。 Wherein the single cell voltage acquisition module, total cell voltage / current total acquisition module will be collected single set of battery voltage, battery total voltage and total current respectively by the multiplex switch, the A / D conversion chip and the master chip CPU's I / O port is connected; capture control chip CPU circuit board are connected through the CAN bus communication module CAN bus communication module and the main control circuit board, the other is connected through RS232 serial communication module PC.

控制电路板:主要包括与采集电路板和整车控制器连接的CAN总线通讯模块、与PC机连接的RS232串口通讯模块、非易失性数据存储模块、强电保护模块、温度控制模块、故障报警模块和主控芯片CPU。 The control circuit board: including the CAN communication circuit board and vehicle acquisition module connected to the controller, RS232 serial communication module connected to the PC, the non-volatile data storage module ferroelectric protection module, temperature control module, fault alarm module and a master chip CPU. 其中非易失性数据存储模块的地址端口与数据端口分别与主控芯片CPU的I/O口连接,读、写端口分别与主控芯片CPU的读、写端口连接,主控芯片CPU的I/O端口分别连接强电保护模块、温度控制模块、故障报警模块光耦的输入端(CA)。 Wherein an address port and a data port nonvolatile data storage module are / O port connected to the I control chip CPU, read, write and read ports are the main CPU chip, a write port, the CPU control chip I / O ports are electrically connected to the strong protection module, temperature control module, fault alarm module optocoupler input terminal (CA).

在采集电路板系统中:为了对单组电池进行电压采样,本实用新型先对单组电池经过精密电阻分压,再经过线性光耦LOC110隔离的前后均配置一个运算放大器,其目的是提高电压采集的线性度和抗干扰性。 In acquisition board system: For single cell voltage sampling, prior to the present invention a single cell through precision resistor divider, and then through the front and rear linear optocoupler LOC110 isolation are disposed an operational amplifier whose purpose is to increase the voltage collected linearity and noise immunity. 为了对电池组总电压进行采样,本实用新型采用型号为CHV-25P的霍尔电压传感器,该传感器采集精度高、稳定性好,满足本系统总电压的测量范围。 In order for the total battery voltage is sampled, the present invention uses a model CHV-25P Hall voltage sensor, the sensor to collect high accuracy, good stability, meet the measurement range of the total voltage of the present system. 为了对电池组电流进行采样,本实用新型专利采用型号为CHB-200SF的霍尔电流传感器,考虑到电流采集的精度直接影响到电池荷电状态SOC的计算精度,所以在经过模/数转换时,本实用新型专利采用了CPU片外16位A/D转换芯片ADS8320,从而进一步提高了电流的采样精度;为了对电池的温度进行采样,本实用新型专利采用型号为DS18B20的数字式温度传感器,该传感器测量范围、精度等符合本系统测量要求,此外采用了片内A/D的单数据线,发出的温度数据可直接送入采集电路板的主控芯片CPU的I/O口;在与主控制电路板CPU的发送、接受过程中,本实用新型专利采用CAN总线技术并且通过6N137光耦隔离,其目的是CAN总线具有数据传送速度快、抗干扰能力强等特点。 In order for the battery pack current is sampled, the present utility model patent model using CHB-200SF the current sensor, taking into account the accuracy of the current collection directly affects the calculation accuracy of the battery state of charge SOC, so after analog / digital conversion the present utility model patent uses external CPU chip 16-bit a / D conversion chip ADS8320, thereby further improving the sampling precision current; to the temperature of the battery is sampled, the present utility model patent uses model DS18B20 digital temperature sensor, the sensor measuring range, measurement accuracy meet the requirements of the system, in addition to the data lines using a single chip a / D, the temperature data may be sent directly into the CPU chip collection main circuit board I / O port; with the main control circuit board transmits the CPU, the process of acceptance, the present utility model patent CAN bus technique and by isolation optocoupler 6N137, CAN bus with the purpose of fast data transmission rate, and strong anti-interference ability.

在主控制电路板系统中:除了与采集电路板通讯的CAN总线功能以外,在对电池一些重要历史数据(如:系统掉电后的SOC记录)储存等方面,本实用新型采用了非易失性存储器。 In the main control circuit board system: In addition to the CAN bus functions and the acquisition of communication other than the circuit board, the battery in some important historical data (such as: system power failure after recording the SOC) storage, etc. aspect, the present invention uses a non-volatile memory. 如果掉电时间不长,系统直接调用掉电前的SOC值,如果掉电时间长,系统通过DS1644记录的掉电时间长度与电池的自放电率对掉电前的SOC值进行一定的补偿;在保护功能方面,涉及了强电保护单元、温度控制单元以及报警单元等,强电保护单元的主要任务是当电池在充、放电过程中处于过压、过流、欠压、欠流时,主控芯片的I/O口发出相应的电平信号切断主回路上的继电器;温度控制单元的主要任务是当被测电池的温度高于或低于某个设定值时,主控芯片的I/O口发出相应的电平信号开启或关闭电池板里的风扇;报警单元的主要任务是当电池处于非正常状态时,发出报警信号;在与PC机通讯方面是通过RS232串口通讯,把电池电压、电流、温度以及SOC等方面数据传送到PC机上显示;与整车控制器HCU是通过与采集电路板通讯的CAN总线通讯模块并接一个接点。 If the power failure lasts long, the system calls the SOC value directly before the power failure, if the down time is long, the SOC value before the system is powered down by a certain degree of self-discharge rate DS1644 compensated power down time length of the recording cells; the protection function, high-power directed to the protection unit, the temperature control unit and an alarm unit, the main task of the high-power protection unit when the battery is in the charge and discharge process in an over-voltage, over current, under voltage, under-current, master chip I / O port emits a signal corresponding to the level of the cut-off relay main circuit; main task of temperature control unit when the measured temperature of the battery is above or below a set value, the master chip I / O port emits a corresponding level signal to turn on or off the panel in a fan; main task of the alarm unit when the battery is in an abnormal state, an alarm signal; with the PC, communications through the RS232 serial communication, the battery voltage, current, temperature, and other aspects of SOC data to the PC display; HCU by the vehicle controller with the CAN bus communication module collection circuit board connected to one contact and communication.

该系统的主要功能是实现对动力电池组在混合动力汽车实际工况中的单组电池电压监测、电池组总电压监测、电池充放电电流监测;电池荷电状态(SOC)的实时估算;对电池过压、过流、欠压、欠流等一系列强电保护以及报警;对电池的温度控制功能;对电池的均衡功能;与显示装置以及整车控制器的通讯功能等。 The main function of this system is to achieve the traction battery single cell voltage monitoring hybrid vehicle real-world conditions, the total voltage monitoring battery, battery charge and discharge current monitoring; battery state of charge (SOC) of the real-time estimate; of cell overvoltage, a series of high-power protection overcurrent, undervoltage, undercurrent and other alarm; battery temperature control function; battery equalization function; the display communication means and vehicle controller and the like.

本实用新型结构简单、操作方便,和已有的相关技术相比,本实用新型具有以下优点:首先在采集电压、电流模块中使用了多路转换开关,有效地扩大了主控芯片CPU的I/O口,这样对主控芯片CPU的I/O口数量要求降低,CPU的可选择范围的扩大。 Has simple structure, convenient operation, and compared to existing technologies, the present invention has the following advantages: I first use of the multiplex switches in the acquisition of the voltage, current module, effectively expanding the CPU of the master chip / O port, so that the master chip for the CPU I / O port to lower the number, the CPU of the expanded range of options. 并且通过CPU的I/O发出片选信号在同一时刻分时直接采集单组电池电压,提高了电压采集的精度和速度;其次在采集电路板与主控制电路板之间的通讯采用了CAN总线方式,这样提高了在整车复杂的实际工况中数据发送的稳定性;最后在单组电池电压采集模块中使用了精密电阻和线性光耦,这样有效提高了单组电池电压采集精度以及电压采集过程中的抗干扰性。 And issues a chip select signal at the same time collected directly sharing a single set of battery voltage, improve accuracy and speed of voltage acquired by the CPU I / O; secondly acquisition communication between the circuit board and the main control circuit board using the CAN bus way, the increase in the vehicle so that the actual operating condition of the complex data transmitted stability; end use of precision resistors and linear optocoupler single cell voltage acquisition module, which effectively increases the voltage of the single cell voltage acquisition accuracy and immunity collection process.

附图说明 BRIEF DESCRIPTION

图1为本实用新型提出的混合动力汽车用动力电池组管理系统总体结构框图。 FIG hybrid vehicle 1 of the present invention proposes a block diagram of battery pack management system architecture.

图2为本实用新型提出的混合动力汽车用动力电池组管理系统单组电池(6只/组)电压的采集原理图。 FIG 2 is the new proposed hybrid vehicle power battery management system with a single set of batteries (6 / group) collected voltage Schematic practical.

图3为本实用新型提出的混合动力汽车用动力电池组管理系统电池组(120只)总电压的采集原理图。 FIG 3 new proposed hybrid vehicle power battery management system with a battery pack (120) collecting the total voltage Schematic present invention.

图4为本实用新型提出的混合动力汽车用动力电池组管理系统电池组总电流的采集原理图。 Hybrid vehicle 4 of the present invention proposed acquisition principle view of FIG total current power battery management system battery.

图5为本实用新型提出的混合动力汽车用动力电池组管理系统电池温度采集的采集原理图。 FIG. 5 is a schematic diagram collection invention proposed hybrid vehicle with the power battery management system battery temperature acquisition.

图6为本实用新型提出的混合动力汽车用动力电池组管理系统采集板上多路转换开关ADG608与16位片外AD转换芯片的电路连接原理图。 Hybrid vehicle of the present invention in FIG. 6 proposed acquisition board connected to multiplexing circuit diagram switch ADG608 outer AD conversion with 16-bit slice chip battery management system with power.

图7为本实用新型提出的混合动力汽车用动力电池组管理系统采集板上串口通讯和CAN通讯接口原理图。 Board serial communication and CAN communication interface schematic diagram of FIG. 7 is utility model with the acquisition of hybrid vehicles power battery management systems.

图8为本实用新型提出的混合动力汽车用动力电池组管理系统采集板上CPU的外围连接图。 Figure 8 is a hybrid vehicle of the invention made with the power acquisition board battery management system connected to a peripheral CPU of FIG.

图9为本实用新型提出的混合动力汽车用动力电池组管理系统采集板上供电模块原理图。 Schematic board power supply module of FIG. 9 the hybrid vehicle of the present invention with the power acquisition proposed battery management system.

图10为本实用新型提出的混合动力汽车用主控制板上串口通讯和CAN通讯接口原理图。 Board serial communication and CAN communication interface with the main control schematics new proposed hybrid vehicles 10 present invention.

图11a和图11b为本实用新型提出的混合动力汽车用动力电池组管理系统主控制电路板CPU外围电路原理图。 CPU peripheral circuit board circuit diagram hybrid vehicle 11a and 11b proposed by the present invention for controlling the main power battery management system.

图12为本实用新型提出的混合动力汽车用动力电池组管理系统主控制板上供电模块原理图。 Schematic board power supply module hybrid vehicle 12 of the present invention made by controlling the main power battery management system.

图13为本实用新型提出的混合动力汽车用动力电池组管理系统采集电路板的软件流程图。 Software flow chart of the circuit board with the power battery management system acquisition new proposed hybrid vehicle 13 of the present practical FIG.

图14为本实用新型提出的混合动力汽车用动力电池组管理系统主控制电路板的软件流程图。 FIG hybrid vehicle 14 of the present invention proposed a software flow chart of the circuit board main power battery management system control.

具体实施方式 Detailed ways

以下以单组电池为6只/组、电池组为120节电池的混合动力汽车用动力电池组的管理为例来详细说明本实用新型。 The following 6 single-cell / group, battery section 120 is a hybrid vehicle with a battery power management of a battery pack as an example of the present invention is described in detail.

图1给出来管理系统的总体结构,它主要由采集电路板和主控制电路板两大部分构成。 1 to FIG out the overall structure of the management system, it is mainly by the acquisition circuit board and the main control circuit board composed of two parts. 采集电路板主要负责单组电池(6只/组)电压的监测、电池组(120节电池)总电压的监测、电池充放电电流的检测、电池温度的检测以及与主控制电路板之间的通讯等。 A single circuit board is responsible for collecting cell (6 / group) of the monitored voltage, monitoring the total voltage of the battery group (battery section 120), detecting a battery charge and discharge current, and battery temperature detection and control between the main circuit board communications. 主要包括主控芯片CPU、单组电池电压采集模块、电池总电压/总电流采集模块、电池温度采集模块、电池均衡模块以及CAN总线通讯模块。 The main control chip including the CPU, the single cell voltage acquisition module, total cell voltage / current total acquisition module, the battery temperature acquisition module, and the cell balancing module CAN bus communication module. 其中单组电池电压采集模块、电池总电压/总电流采集模块将采集到的单组电池电压、电池组总电压和总电流分别通过多路转换开关、A/D转换芯片后,与主控芯片CPU的I/O口连接;采集电路板上的主控芯片CPU通过CAN总线通讯模块与主控制电路板上的CAN总线通讯模块进行连接,另外通过RS232串口通讯模块PC机连接。 Wherein the single cell voltage acquisition module, total cell voltage / current total acquisition module will be collected single set of battery voltage, battery total voltage and total current respectively by the multiplex switch, the A / D conversion chip and the master chip CPU's I / O port is connected; capture control chip CPU circuit board are connected through the CAN bus communication module CAN bus communication module and the main control circuit board, the other is connected through RS232 serial communication module PC.

主控制电路板主要负责接受来自采集电路板采集的电池相关参数(电压、电流、温度)数字量、SOC的估算、与整车控制器以及PC机的通讯、非易遗失性地存储电池历史数据、电池充放电过程中的强电保护、电池温度控制以及电池故障预警等。 The main control circuit board is mainly responsible for receiving (voltage, current, temperature) Digital, the SOC estimation, communication with the vehicle controller, and the PC, the non-volatile memory cell loss of historical data collected from the cell-related parameter acquisition circuit board strong electric protection, temperature control, and a battery cell failure early warning of battery charge and discharge process. 主要包括与采集电路板和整车控制器连接的CAN总线通讯模块、与PC机连接的RS232串口通讯模块、非易失性数据存储模块、强电保护模块、温度控制模块、故障报警模块和主控芯片CPU。 Including the CAN communication circuit board and vehicle acquisition module connected to the controller, RS232 serial communication module connected to the PC, the non-volatile data storage module ferroelectric protection module, temperature control module, the main module and the fault alarm control chip CPU. 其中非易失性数据存储模块的地址端口与数据端口分别与主控芯片CPU的I/O口连接,读、写端口分别与主控芯片CPU的读、写端口连接,主控芯片CPU的I/O端口分别连接强电保护模块、温度控制模块、故障报警模块光耦的输入端(CA)。 Wherein an address port and a data port nonvolatile data storage module are / O port connected to the I control chip CPU, read, write and read ports are the main CPU chip, a write port, the CPU control chip I / O ports are electrically connected to the strong protection module, temperature control module, fault alarm module optocoupler input terminal (CA).

一、以下结合附图对采集电路板的各个模块分别进行详细说明:1、单组电池(6只/组)电压采集模块,其原理图如图2所示:在整车实际工况中,分别定义电池组总电压的上限和下限:规定电池组总电压的下限为96V;规定电池组总电压的上限为200V。 First, each module conjunction with the drawings collection circuit boards are described in detail: 1, the single cell (6 / group) voltage acquisition module, the schematic diagram shown in Figure 2: the actual vehicle operating condition, total voltage of the battery pack are defined upper and lower limits: total voltage of a predetermined lower limit of the 96V battery; battery total voltage of a predetermined upper limit of 200V. 那么可以计算出单组电池(6只/组)的电压变化范围:下限: You can calculate the single cell (6 / group) voltage range: Low: 上限: Limit: 由式(2-1)、(2-2)可以计算出单组电池(6只/组)的工作电压变化范围在[6.5V~10V]之间变化。 By the formula (2-1), (2-2) a single cell can be calculated (6 / group) operating voltage range varies between [6.5V ~ 10V]. 本BCM系统中,对单组电池(6只/组)电压的采集方案采用了先通过精密电阻[6]分压,再经过型号为LOC110的光耦线性[4]隔离放大,这样做的好处是抗干扰能力强、采样精度高,因考虑到电池在没有使用期间会有一定的自放电,如果单组电池的电压采集电路还形成一个回路,此时会对电池的容量造成不必要的损失。 BCM present system, single cell (6 / group) collected using the first embodiment of the voltage dividing resistor by precision [6], then through a linear optocoupler LOC110 model [4] isolation amplifier, the benefits of doing so anti-interference ability, high sampling accuracy, in consideration of the battery is not used during the self-discharge will be some, if a single cell voltage acquisition circuit also forms a loop, the battery capacity at this time will cause unnecessary losses . 因此在每路单组电池的电压采集回路中串联一个型号为HHC66G(4078)的开关继电器[1],各路开关继电器[1]的工作电源由输入总电源[26](12V)提供。 Thus a series type voltage per single-cell acquisition circuit for HHC66G (4078) of the switching relay [1], various relay switch [1] is the input power supply from the main power [26] (12V). 当整个电池管理系统处于非工作状态时,通过切断总电源[26]促使开关继电器[1]断开,使电压采集电路形成断路;当整个电池管理系统处于工作状态时,通过导通总电源[26]促使开关继电器[1]接通,使电压采集电路形成回路,从而有效地避免了电池在非工作状态中的自放电。 When the entire battery management system in the inoperative state, by cutting off the main power [26] causes the switching relay [1] OFF, the open circuit voltage acquisition circuit is formed; when the entire battery management system in operation, by turning on the main power [ 26] causes the relay switch [1] is turned on, the voltage acquisition circuit loop is formed, thus effectively avoiding self discharge of the battery in a non-operating state. 单组电池电压由精密电阻分压后经过运算放大器LM258[3](增加光耦线性度)后到达线性光耦LOC110[4],从光耦出来后再经过另一个运算放大器LM258[5]。 By a single set of the cell voltage after dividing precision resistor of the operational amplifier LM258 [3] (incremented optocoupler linearity) reaches the linear optocoupler LOC110 [4], and then through another optical coupler from the operational amplifier LM258 [5]. 图中前一个运算放大器LM258[3]用电池本身输出电压(辅加一个LM7805三端稳压[2])供电,线性光耦LOC110[4]与后一个运算放大器LM258[5]靠一个独立的+5V电源[28]供电。 An operational amplifier in FIG front LM258 [3] with the output voltage of the battery itself (LM7805 a three-terminal regulator Adjuvant [2]) power, linear optocoupler LOC110 [4] and the rear of an operational amplifier LM258 [5] by a separate + 5V power supply [28] power. 用于分压的精密电阻[6]和光耦前后的输入、输出电阻[7][8]计算如下:由于与线性光耦LOC110[4]连接的第一个运算放大器LM258[3]输入电压的范围在[0V~2V]之间,再联系到电池的工作电压范围在[6.5V~10V]之间。 For precision resistor divider [6] and the input, output resistance before and after the optical coupler [7] [8] is calculated as follows: LM258 [3] a first input voltage of the operational amplifier due to the linear optocoupler LOC110 [4] connection range between [0V ~ 2V], then linked to the cell operating voltage range [6.5V ~ 10V]. 因此采用的精密电阻[6]比值为(4∶1),采用8K(2.4K与5.6K)和2K。 Thus precision resistors employed in [6] ratio (4:1) using 8K (2.4K and 5.6K) and 2K. 本系统采用的线性光耦LOC110[4]对输入、输出电阻[7][8]有以下要求:VIN=I1gR1(2-3)I1=K1gIF(2-4)R1=VINK1gIF---(2-5)]]>式中:VIN——输入电压; I1——祠服光电流(输入);R1——输入电阻; IF——LED驱动电流;K1——I1与IF的比值;由式(2-5)可求出输入电阻R1=VINK1gIF=20.004g0.015Ω=33.3KΩ]]>(这里查阅有关资料VIN=2V,K1=0.004,IF=15mA)VOUT=I2gR2(2-6)I2=IFgK2(2-7)R2=VINK2gIF---(2-8)]]>VOUT——输出电压; I2——祠服光电流(输出);R2——输出电阻; IF——LED驱动电流;K2——I2与IF的比值;由式(2-8)可求出输出电阻R2=VINK2gIF=40.004g0.015Ω=66.6KΩ]]>(这里查阅有关资料VOUT=4V,K2=0.004,IF=15mA)由式(2-3)、(2-4)、(2-5)、(2-6)、(2-7)、(2-8)可以求出输入电压VIN与输出电压VOUT之间的关系: The system uses a linear optocoupler LOC110 [4] input, output resistance [7] [8] has the following requirements: VIN = I1gR1 (2-3) I1 = K1gIF (2-4) R1 = VINK1gIF --- (2 -5)]]> where: VIN-- input voltage; I1-- Temple service photocurrent (input); R1 - input resistance; IF - LED driving current; K1 - the ratio of I1 and IF; by the formula (2-5) can be obtained input resistor R1 = VINK1gIF = 20.004g0.015 & Omega; = 33.3K & Omega;]]> (where access to such information VIN = 2V, K1 = 0.004, IF = 15mA) VOUT = I2gR2 (2-6 ) I2 = IFgK2 (2-7) R2 = VINK2gIF --- (2-8)]]> VOUT-- output voltage; I2-- Temple service photocurrent (output); R2 - output resistance; IF - LED driving current; K2 - I2 ratio of the IF; by the formula (2-8) can be obtained output resistance R2 = VINK2gIF = 40.004g0.015 & Omega; = 66.6K & Omega;]]> (where access to such information VOUT = 4V, K2 = 0.004, IF = 15mA) by the formula (2-3), (2-4), (2-5), (2-6), (2-7), (2-8) the input voltage VIN can be calculated the relationship between the output voltage VOUT with:

VOUT=VINgK3gR2R1---(2-9)]]>(这里查阅有关资料K1=K2=0.004,K3=K2K1=1)]]>[注:前一个运放的地为相对地;后一个运放的地为公共地]2、电池组(120只)总电压采集模块,其电路原理图如图3所示:整个试验过程中,分别定义了电池组总电压的上限和下限:规定电池组总电压的下限为130V(即SOC为0,电池不能带动电机转动的最低电压);规定电池组总电压的上限为200V(电池的性能所决定),因此选用型号为CHV-25P的霍尔电压传感器[10]采集总电压。 VOUT = VINgK3gR2R1 --- (2-9)]]> (where access to such information K1 = K2 = 0.004, K3 = K2K1 = 1)]]> [Note: The first operational amplifier for relatively; after a run for commonly put] 2, the battery pack (120) the total voltage acquisition module, the circuit diagram shown in Figure 3: throughout the test, define the upper and lower limits of the total voltage of the battery pack: a predetermined battery the lower limit of the total voltage of 130V (i.e., the SOC is 0, the minimum battery voltage can not drive the motor rotation); the upper limit of the total voltage of 200V predetermined battery (battery performance of the decision), and therefore the choice model of Hall voltage CHV-25P the sensor [10] collecting the total voltage. 其工作原理是:输入、输出都为电流的形式,因此要通过精密电阻[9][11]把电流转化为电压形式。 Its working principle is: the input and output are in the form of a current, and therefore through the precision resistor [9] [11] form the current into a voltage. ,CHV-25P霍尔电压传感器[10]的主要技术参数如下表: , CHV-25P Hall voltage sensor [10] The main technical parameters as follows:

CHV-25P霍尔电压传感器[10]各引脚的说明:+HT:输入电流正 -HT:输入电流负 +:正电源M:输出端 -:负电源输入、输出电阻的确定:按照电池工作的最高电压Umax200V作为CHV-25P霍尔电压传感器[10]的输入电压来计算,规定送A/D转换的电压UAD为5V,那么:输入电阻:R1=UmaxIN=2000.01Ω=20KΩ---(2-10)]]>输出电阻:R2=UADIM=50.025Ω=200Ω---(2-11)]]>3、电池组总电流的采集模块,其电路原理图如图4所示:电池在整车实际工况中,电流的变化范围在[0A~200A]之间。 CHV-25P Hall voltage sensor described each pin [10]: the HT +: Positive input currents -HT: Input current negative +: positive power source M: output terminal -: Negative determining power input, output resistance: Following battery the highest voltage Umax200V as CHV-25P Hall voltage sensor [10] is the input voltage is calculated, a predetermined transmitting a / D converted voltage UAD is 5V, then the: input resistance: R1 = UmaxIN = 2000.01 & Omega; = 20K & Omega; - - (2-10)]]> output resistance: R2 = UADIM = 50.025 & Omega; = 200 & Omega; --- (2-11)]]> 3, the overall battery pack current collecting module, the circuit diagram shown in Figure 4 shown: actual battery in the vehicle operating condition, the current range of between [0A ~ 200A]. 考虑到BCM系统中电流采集的精度对电池荷电状态(SOC)影响很大,所以本系统中采用精度较高,型号为CHB-200SF的霍尔电流传感器[12]。 Considering the BCM system influence on the accuracy of current detection of the battery state of charge (SOC) is large, so that high precision used in the present system, model CHB-200SF Hall current sensor [12]. CHB-200SF霍尔电流传感器[12]的主要技术参数如下表: CHB-200SF Hall current sensor [12] The main technical parameters as follows:

CHB-200SF霍尔电流传感器[12]各引脚的说明如下:-15V——电源负 Data——数据输出引脚 +15V——电源正输出电阻[13]的确定:从图4可以看出,该电流传感器电源[26]是采用双12V,数据输出采用电流形式,因此需要用精密电阻[13]将电流形式转化为电压形式。 CHB-200SF Hall current sensor described [12] of each pin is as follows: -15V-- negative power Data-- data output pin + 15V-- positive output resistance [13] to determine: 4 can be seen from FIG. the power supply current sensor [26] is a dual 12V, the output data using the current form, which thus requires precision resistor [13] the current is converted to voltage form form. 并且串联一个阻值为150欧姆的可调电位器[14]。 And a series resistance of 150 ohms trimpot [14]. 此外在进行A/D转换之前接入一个运算放大器LM258[15]可以增强采集的线性度。 Further access an operational amplifier LM258 [15] prior to A / D conversion may be acquired to enhance the linearity. 按照电池工作的最高电流Imax=200A作为电流传感器的输入电流来计算,规定送A/D转换的电压UAD为5V,那么:输出电阻:R=UADIM=50.1Ω=50Ω---(2-12)]]>4、电池温度采集模块,其原理图如图5所示:本电池管理系统采用的是美国DALLAS公司生产的DS18B20数字式温度传感器[16],在测试电池温度时(需要使用多个温度传感器)要对数字线进行电阻[17]上拉,可把每个DS18B20数字式温度传感器[16]的地线(引脚1)、数据线(引脚2)、电源线(引脚3)分别合并(即6个DS18B20数字式温度传感器[16]采用3个总线——地线、数据线、电源线)的方式,。 According to the maximum current Imax cell operation = 200A is calculated as the input current of the current sensor, a predetermined transmitting A / D converted voltage UAD is 5V, then: output resistance: R = UADIM = 50.1 & Omega; = 50 & Omega; --- (2 -12)]]> 4, the battery temperature acquisition module, the schematic diagram shown in Figure 5: the battery management system uses a digital temperature sensor DS18B20 [16] U.S. produced DALLAS, when the test cell temperature (required a plurality of temperature sensors) to the digital line resistance [17] on the pull, each may be the DS18B20 digital temperature sensor [16] ground (pin 1), the data line (pin 2), the power supply line ( pin 3) are combined (i.e. 6 DS18B20 digital temperature sensor [16] the bus 3 - ground, data lines, power lines) manner. 该温度传感器[16]具有以下特点:●温度测量范围:-55℃~+125℃;●测量精度:0.5℃;●9位温度数字输出量;●温度到数字量的转换时间为200ms;●具有片内A/D转换。 The temperature sensor [16] has the following characteristics: ● Temperature Range: -55 ℃ ~ + 125 ℃; ● Accuracy: 0.5 ℃; ● 9-bit temperature digital output; ● temperature to digital conversion time is 200ms; ● having a chip A / D conversion.

5、串口通讯和CAN通讯接口原理图,如图7所示:本采集板采用CAN总线与主控板进行数据发/送,这样可以提高数据交换的速度和稳定性;采用RS232串口与上位机通讯,实时对电池的状态进行显示。 5, serial communications interfaces, and CAN communication diagram, shown in Figure 7: The collection plate and the main control board CAN bus data send / transmission, this can increase the speed and reliability of data exchange; PC using the RS232 serial port and communications, real-time display of the state of the battery. CAN总线与RS232串口要用6N137光耦[24]隔离。 CAN bus and RS232 serial use 6N137 optocoupler [24] isolated.

RS232串口接线头采用通用9针插座[21]与主控芯片CPU[25](PIC18F458单片机)之间有一个MAX232电平转换芯片[20],由于主控芯片CPU[25]输入、输出电平为TTL电平,而PC机配置的是RS-232标准串行接口,二者电气规范不一致,要完成PC机与主控芯片CPU[25]的串行数据通信,必须进行电平转换。 RS232 serial port using a common lug 9-pin socket [21] and the master chip CPU [25] Between (PIC18F458 microcontroller) a MAX232 level converter chip [20], since the main chip CPU [25] input, output level TTL level, while the PC is configured standard RS-232 serial interface, both inconsistent electrical specifications, to complete the main chip and the PC CPU [25] of the serial data communication, the need for level conversion.

本系统中CAN总线接线头采用的是通用9针插座[23],缓冲器采用的是PHILIPS公司出产的型号为PCA82C250芯片[22]。 This system uses a CAN bus is the Universal lugs 9-pin socket [23], the buffer used is produced by PHILIPS PCA82C250 chip model [22]. 它将主控芯片CPU[25]的CAN控制器输出引脚的TTL电平变换为CAN总线上的差分信号。 TTL level converter will control chip CPU [25] CAN controller output pin of the differential signal on the CAN bus.

6、采集板主控芯片CPU的外围接口电路图,如图8所示:采集板主控芯片采用微芯公司(Microchip)出产的PIC18F458单片机,该单片机片内带8路10位A/D转换。 6, a circuit diagram of peripheral interface chip collection main CPU board as shown in Figure 8: acquisition board main chip Microchip (Microchip) produced PIC18F458 microcontroller, the microcontroller chip with the 8 10-bit A / D conversion. 由于本实施例中单组电压采集(20路)、总电压采集(1路)、总电流采集(1路),所以造成A/D转换通道数和精度不够,因此本系统中采用型号为ADG608的多路开关[18]和型号为ADS8320的16位高精度A/D转换芯片[19]。 Since the present embodiment, a single set of voltage pickup (20 channel), the total voltage acquisition (1 channel), a total current detection (1 channel), so the resulting A / D conversion channels and insufficient precision, so the present system uses model ADG608 multi-way switch [18] and the model ADS8320 16-bit precision a / D conversion chip [19]. 此外16位高精度A/D转换芯片[19]还可以提高电流采集后的转换精度,从而提高SOC的估算精度。 Further precision 16-bit A / D conversion chip [19] may further improve the conversion accuracy of the current pickup, thereby improving the estimation accuracy of the SOC. 多路开关与A/D转换芯片的外围电路如图6所示。 Multiplexer and A / D conversion chip peripheral circuit as shown in FIG.

PIC18F458单片机主要特点如下:●高达2MB的程序存储器,4KB的数据存储器,10MIPS的执行速度;●16位宽指令,8位宽数据通道,DC~40MHz时钟,4~10MHz带PLL锁相环有源晶振/时钟输入;●3个外部中断引脚,4个定时器,2种振荡器时钟选择;●捕捉/比较/脉宽调制(PWM)(CCP)模块,增强型CCP模块具有标准CCP模块的所有特性;●有2种工作方式的主同步串行通信(MSSP),可寻址的USART模块;●10位、8通道的模/数转换模块(A/D),模拟比较模块;●带CAN总线模块;●上电复位电路(POR)、上电延时定时器(PWRT)和振荡器起振定时器,带片内RC振荡器的监视定时器(WDT),可编程代码保护,通过2个引脚可进行在线串行编程(ICSP),休眠(SLEEP)省电方式;●低功耗、高速增强型FLASH技术。 PIC18F458 microcontroller main features as follows: ● up to 2MB program memory, data memory 4KB, the execution speed of 10MIPS; ● 16-bit wide instructions, 8-bit wide data path, DC ~ 40MHz clock, 4 ~ 10MHz band, PLL active crystal / clock input; ● 3 external interrupt pins, four timers, two kinds of the oscillator clock selection; ● capture / Compare / pulse width modulation (the PWM) (CCP) modules, CCP module enhanced with standard CCP module All characteristics; ● there are two main ways of working synchronous serial communication (the MSSP), addressable USART module; ● 10 bit 8 channel analog / digital conversion module (a / D), analog comparator module; ● belt CAN bus module; ● on reset circuit (the POR), the power-up timer (PWRT) and the oscillator start-up timer, the RC oscillator with on-chip watchdog timer (the WDT), programmable code protection, by two pins serial programming (the ICSP), sleep (the sLEEP) the power saving mode; ● low power, enhanced FLASH technology.

7、采集板供电模块,其电路图原理图如图9所示:本电池管理系统(BCM)采集板中所使用到的供电电源有(±12V,+5V,UAD[参考电压])。 7, acquisition board power supply module, the schematic circuit diagram thereof shown in Figure 9: The battery management system (BCM) used to capture board power supply with a (± 12V, + 5V, UAD [reference voltage]). 因此考虑在本系统中使用两个三端稳压LM7805[28][29](输出为+5V)、一个精密基准电源[27](输出为UAD[参考电压]),输出用精密电阻[30]转化成电压形式。 Thus consider using two three-terminal regulator in the present system LM7805 [28] [29] (output of + 5V), a precision reference power supply [27] (output of the UAD [reference voltage]), the output precision resistor [30 ] is converted into a voltage form. 其中,系统总电源[26]向双12电压传感器[10]供电,系统(GND)地作为数字地和模拟地的输出端,两个三端稳压LM7805[28][29]分别作为数字电源和模拟电源。 Wherein the total system power [26] to a voltage sensor 12 bis [10] the power supply system (GND) as output of the digital and analog, the two three-terminal regulator LM7805 [28] [29] were used as the digital power and analog power.

二、以下对主控制电路板的各个功能模块集合附图进行详细说明:主控制板上所选用的CPU仍然为PIC18F458单片机。 Second, the following detailed description of the drawings the various functional modules of the main set of the control circuit board: a main control board of the selected still PIC18F458 microcontroller CPU.

1、主控制电路板的串口通讯和CAN通讯接口电路参见图10。 1, the main control circuit board and the serial communication CAN communication interface circuit 10 Referring to FIG.

与整车控制器通讯模块:通过CAN总线将与电池状态有关的参数发送到整车控制器,同时整车控制器也将相关的指令信号通过CAN总线发送到主控制电路板的主控芯片CPU[37],并且通过6N137光耦隔离[35]。 Vehicle communication module and the controller: the battery state-related parameters sent to the vehicle via a CAN bus controller, while also the relevant vehicle control command signal to the master CPU chip main control circuit board via the CAN bus [37], and the spacer [35] through optocoupler 6N137. 本实用新型的CAN缓冲器采用型号为PCA82C250T芯片[33]和9针通用接口[34]。 The present invention uses the buffer model PCA82C250T CAN chip [33] and the 9-pin universal interface [34].

与PC机通讯模块:通过串口通讯的方式将与电池状态有关的参数发送到具有相关采集软件的PC机上。 And PC communication module: a battery state-related parameters to the PC with associated software acquired through serial communication. 本实用新型采用的RS232串口与CPU之间的电平转换芯片[31]为MAX232,与PC机连接的接口采用9针通用接口[32]。 Level conversion chip [31] between the present invention and the CPU uses the RS232 serial port as MAX232, to interface with a PC using a 9-pin universal interface [32].

电池历史数据储存模块:本系统采用的非易失性存储器NVRAM[36]是美国DALLAS公司出产的DS1644,该存储器内部集成32kx8RAM、实时时钟、锂离子电池。 History data storage battery modules: a nonvolatile memory employed in the system NVRAM [36] is produced by DALLAS DS1644 U.S., the internal memory integrated 32kx8RAM, real-time clock, a lithium ion battery. DS1644数据保存时间可达10年,采用数据线和地址线分开的并行数据格式,存取速度快,与外部扩展的RAM的读写速度相当,可用于保存一段时间的电池状态数据,也可以保存重要的电池数据,为分析电池充放电状态提供依据。 DS1644 data retention time up to 10 years, the use of separate data and address lines of a parallel data format, access speed, and the external expansion RAM read and write speeds rather, can be stored for a period of time the battery status data may be stored important battery data, provide the basis for analysis of the state of battery charge and discharge. 其具体的扩展方法为:15个地址线引脚和8个数据线引脚分别连接到主控芯片CPUCPU[37]的各个I/O口,读/写信号引脚和片选信号引脚分别连接到主控芯片CPU[37]的读/写信号引脚和片选信号引脚。 Specific extension method: 15 address lines and eight data line pins pins are connected to the master chip CPUCPU [37] for each I / O port, a read / write signal and a chip select signal pin pin respectively read control chip connected to the CPU [37] / write signal pins and chip select signal pin.

电池温度控制单元、报警单元均采用主控芯片CPU[37]的I/O口发送高/低电平信号形式经过型号为TLP121光耦[38]隔离后,通过型号为HHC66G(4078)的开关继电器[39]控制风扇[41]与报警器[40]。 Battery temperature control means, an alarm units using the master chip CPU [37] of the I / O port transmits high / low level signal to form after the model TLP121 optocoupler [38] isolated by model HHC66G (4078) switch relay [39] controls the fan [41] and the alarm [40].

强电保护单元采用主控制电路板的主控芯片CPU[37]的I/O口发送高/低电平信号形式经过型号为TLP121光耦[35]隔离后,直接控制电池组充、放电回路总继电器,参见图11a和图11b。 High-power protection unit using the master chip CPU [37] The main control circuit board I / O port transmits high / low signal form through the optocoupler TLP121 model [35] After the isolation, the direct control of the battery charging and discharging circuit total relay, see Figures 11a and 11b.

主控制电路板的供电模块所选用的方案为:选用两片LM7805三端稳压[43][44]分别作为主控制电路板的数字电源和模拟电源,整个系统的地分为数字地与模拟地,整个系统的主电源为外接双12V直流电源[42],它可以为风扇和继电器供电,参见图12。 Program control circuit board main power supply module is chosen: selection of two three-terminal regulator LM7805 [43] [44] were used as digital and analog power main control circuit board, the entire system is divided into digital and analog , the main power to the entire system is external dual 12V DC power [42], which may be the relay power supply and fan, see Figure 12.

本实用新型的采集电路板的软件流程图如图13所示,首先对各个子程序进行相应的初始化,再对采集电池电流、电压以及温度的I/O口分别进行定义,然后依次判断采集到的电压U、电流I、温度T的范围是否满足所规定要求。 Acquisition software of the present invention the circuit board 13 of the flowchart, first, the respective corresponding initialization subroutine, then the collected battery current, voltage, and temperature were defined I O port /, followed by determination collected voltage U, current I, the temperature range T satisfies the requirements. 如果电池的电压、电流不满足要求,则采集板上的CPU将采集到的相关信号通过CAN总线上传到主控制板上的CPU并且通过6N137光耦隔离,然后通过相应的I/O口发出相应的电平信号切断主回路上的继电器,并发出报警信号;如果电池的温度过高或过低,则CPU相应的I/O口发出相应的电平信号开启或关闭风扇。 If the battery voltage, current does not meet the requirements, the CPU of the collection plate will be collected correlation signal upload the main control board via the CAN bus and the CPU through the isolation optocoupler 6N137, and then through the corresponding I / O port to issue the corresponding level off the relay signal in the main circuit, and an alarm signal; if the battery temperature is too high or low, corresponding to the CPU I / O port emits a signal corresponding to the level of the fan on or off. 在电池电压、电流、温度符合规定要求时,读取各数据并上传到采集电路板的CAN总线,为数据向主控制电路板的发送作好准备。 When the battery voltage, current, temperature meet the requirements, and read each data acquisition board uploaded to the CAN bus, the transmission control circuit board ready for the data to the master.

本实用新型的主控制电路板的软件流程图如图14所示,首先系统开机上电初始化后,接受来自与采集电路板连接的CAN总线上的电池相关数据;然后依次判断电池相关数据是否达到极限位置和报警位置,如果达到极限位置和报警位置则采取相应的措施;接下来显示电池的运行状态(如:电池的充放电电流、电压、温度等),再根据相关的算法估算出SOC并显示;最后将数据作打包处理,把电池的相关数据分别送到与整车控制器(HCU)相连接的CAN总线以及与PC机相连接的RS232串口。 The software of the present invention, the main control circuit board 14 is a flow chart, the system is first powered on and initialized after power on, the battery receiving data from the collection on the circuit board CAN bus; followed by determining whether the battery reaches the relevant data alarm limit position and a position, if it reaches the corresponding limit position and location of the action is taken; next display state of the battery (such as: the battery charge and discharge current, voltage, temperature, etc.), and then estimate the SOC and according to the relevant algorithm display; Finally, as the data packing process, the cell data are sent to the RS232 serial CAN bus, and the controller PC and the vehicle (the HCU) connected to the phase connections.

Claims (5)

1.一种混合动力汽车用动力电池组的管理系统,由采集电路板和主控制电路板两大子系统构成,其特征在于:采集电路板包括有主控芯片CPU、单组电池电压采集模块、电池总电压/总电流采集模块、电池温度采集模块以及通讯模块,其中单组电池电压采集模块、电池总电压/总电流采集模块将采集到的单组电池电压、电池组总电压和总电流分别通过多路转换开关、A/D转换芯片后,与主控芯片CPU的I/O口连接;采集电路板上的主控芯片CPU与主控制电路板的主控芯片CPU进行通讯,另外采集电路板通过RS232串口通讯模块与PC机连接;主控制电路板包括有与整车控制器连接的CAN总线通讯模块、与PC机连接的RS232串口通讯模块、非易失性数据存储模块、强电保护模块、温度控制模块、故障报警模块和主控芯片CPU;其中非易失性数据存储模块的地址端口与数据端口分别 A hybrid vehicle with the power of the battery management system, the acquisition control board and the main circuit board of two subsystems, wherein: the circuit board comprises a main collecting the CPU chip, the single cell voltage acquisition module the total cell voltage / total current acquisition module, the acquisition module and communications module, wherein the single cell voltage acquisition module, total cell voltage / total current acquisition module collected into a single set of battery voltage, battery total voltage and total current of the battery temperature are connected by a multiplex switch, the a / D converter chip, the master chip with the CPU I / O port; main CPU chip collection main circuit board of the main control board CPU chip communication, additionally collecting a circuit board connected through RS232 serial communication with the PC module; main control circuit board comprises a CAN bus communication module connected to the vehicle controller, the PC connected to the RS232 serial communication module, a non-volatile data storage module ferroelectric protection module, temperature control module, and a fault alarm module control chip the CPU; wherein an address port and a data port nonvolatile data storage module, respectively, 主控芯片CPU的I/O口连接,读、写端口分别与主控芯片CPU的读、写端口连接,主控芯片CPU的I/O端口分别连接强电保护模块、温度控制模块、故障报警模块光耦的输入端CA。 The master chip CPU I / O port is connected, read, write and read ports are the main CPU chip, a write port, the CPU control chip I / O ports are electrically connected to the strong protection module, temperature control module, fault alarm module optocoupler input terminal CA.
2.根据权利要求1所述的混合动力汽车用动力电池组的管理系统,其特征在于:采集电路板上的通讯模块采用CAN总线通讯模块,与主控制电路板的CAN总线通讯模块进行连接。 The hybrid vehicle according to claim 1 of the traction battery management system, comprising: acquisition board communication module CAN bus communication module, a communication module connected to the CAN bus of the main control circuit board.
3.根据权利要求2所述的混合动力汽车用动力电池组的管理系统,其特征在于:采集电路板中,在CAN总线通讯模块数据读、写端与RS232串口通讯模块数据输入、输出端设置了光耦进行隔离。 The hybrid vehicle according to claim 2 of the traction battery management system, comprising: acquisition circuit board, the data communication module in the CAN bus read, write and RS232 serial communication terminal module data inputs and outputs, provided optocoupler isolation.
4.根据权利要求1所述的混合动力汽车用动力电池组的管理系统,其特征在于:在采集电路板中的单组电池电压采集模块中,单组电池的正、负两端设置了精密电阻进行分压,并连接有一线性光耦,对信号进行隔离放大。 The hybrid vehicle according to claim 1 with a battery power management system, wherein: the single cell voltage acquisition module in the circuit board, the positive and negative ends of the single cell is provided precision dividing resistor, and is connected to a linear optocoupler, the signal isolation amplifier.
5.根据权利要求4所述的混合动力汽车用动力电池组的管理系统,其特征在于:在线性光耦的前后还连接使用了运算放大器。 The hybrid vehicle as claimed in claim 4, wherein the battery pack with the power management system, wherein: longitudinal linear optocoupler is also connected to an operational amplifier used.
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