WO2016086891A1 - 电池均衡模块成组自动检测系统 - Google Patents

电池均衡模块成组自动检测系统 Download PDF

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Publication number
WO2016086891A1
WO2016086891A1 PCT/CN2015/096368 CN2015096368W WO2016086891A1 WO 2016086891 A1 WO2016086891 A1 WO 2016086891A1 CN 2015096368 W CN2015096368 W CN 2015096368W WO 2016086891 A1 WO2016086891 A1 WO 2016086891A1
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module
battery
power supply
equalization
programmable power
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PCT/CN2015/096368
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English (en)
French (fr)
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周逊伟
王定全
黎夏
奚淡基
任远程
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杭州协能科技股份有限公司
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Publication of WO2016086891A1 publication Critical patent/WO2016086891A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

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  • the invention relates to the field of battery detection, and in particular to a battery equalization module group automatic detection system.
  • the battery equalization module is the basic unit of this technology.
  • the whole battery pack requires a certain number of battery equalization modules to form a complete vehicle power system for balanced charging and discharging.
  • the equalization module mainly has the function of increasing the overall charging of the battery pack. Capacity, improve the charge and discharge balance of the single battery, and improve the life of the battery pack.
  • the power battery active equalization technology As the power battery active equalization technology has just started, the corresponding detection equipment is scarce, especially the equalization module group related detection technology and specific test content, test specifications, etc.
  • the traditional module test method is mainly through manual manual test, and each Each module will involve some calculations, it will inevitably lead to flaws, the test is not standardized, the test items are not complete, it is very likely that the tested products are mixed with unqualified products. If such products are applied to the battery, it is likely to cause some Unknown consequences, severely cause the battery cells to be deflected, thus affecting the life of the entire box of batteries.
  • the problem to be solved by the present invention is to provide a battery equalization module group automatic detection system, which improves the measurement accuracy and efficiency of data such as voltage and current by several times compared with the conventional manual test, and is beneficial to improving the product quality of the product.
  • an embodiment of the present invention provides a battery equalization module group automatic detection system, including: a PC, an automatic test main control board, at least one DC programmable power supply, and a test bench for placing an equalization module into a group board.
  • the test bench is connected with a plurality of equalization modules, and the automatic test main control board is electrically connected to the PC, the at least one DC programmable power supply, and the test bench in which the equalization module is placed, and the automatic test main
  • the control board controls the turn-on and turn-off of each control connection connected to the test bench, and determines whether each equalization module passes the test by testing the change of voltage and current on the control line, thereby detecting the group board. Whether the performance of each equalization module is different under different conditions.
  • the automatic test main control board includes an MCU, a current detection module, a voltage detection module, and a parameter test switching module, wherein the MCU is respectively connected to the current detection module, the voltage detection module, and the parameter test switching module, and The MCU is connected to a PC and a DC programmable power supply, and is tested by a PC control current detecting module, a voltage detecting module, and a parameter test switching module.
  • a first DC programmable power supply and a second DC programmable power supply are included.
  • the first DC programmable power supply and the second DC programmable power supply are connected in series, and one end of the second DC programmable power supply is grounded, and a current detecting module is connected to both ends of the first DC programmable power supply.
  • a current sampling resistor wherein the current detecting module and the current sampling resistor are connected in parallel, and the other end of the current detecting module and the current sampling resistor are respectively connected to different battery ports in the equalizing module grouping board through a plurality of isolating switches
  • the MCU controls the state of the isolation switch corresponding to the current detection module through the parameter test switching module, and utilizes the first DC programmable power supply and the second DC programmable power supply.
  • the analog battery is formed in the balance module grouping board, and the corresponding current information of the equalization module is obtained by using the analog battery.
  • one end of the voltage detecting module is connected to the BIAS voltage end of the equalization module grouping board, and the other two ends of the voltage detecting module are respectively connected to different battery ports in the equalizing module grouping board by using multiple isolating switches.
  • the MCU controls the state of the corresponding isolating switch, and uses the first DC programmable power supply and the second DC programmable power supply to form an analog battery power supply in the equalization module grouping board, and uses the analog battery to obtain the corresponding voltage of the equalization module. information.
  • the ground end of the second DC programmable power supply connection is respectively connected to different battery ports in the equalization module group board through a plurality of isolation switches.
  • the working power source is further configured to supply power to the MCU, the current detecting module, and the voltage detecting module of the automatic test main control board.
  • the equalization module grouping board comprises a plurality of equalization modules and a plurality of battery ports connected in series, and an analog battery power supply is formed between different battery ports by using a DC programmable power supply and an isolation switch in the automatic test main control board. The various parameters of the equalization module are tested using the analog battery.
  • test end of the equalization module is connected to each battery port, and the enable end of the equalization module is connected to the battery port through an isolating switch, and the BIAS end of the equalization module is connected to the voltage detecting module through an isolation voltage.
  • the automatic test main control board is connected to the serial port end of each DC programmable power supply through a RS485 bus.
  • the automatic test system uses the PC and the automatic test main control board for automatic test, and the operation is simple, and the measurement precision of data such as voltage and current is improved several times and more accurately than the traditional manual test.
  • the measurement of the relevant data of the module improve the quality of the product, meet the needs of customers, and ultimately play a role in extending the life of the battery pack and improving the charge and discharge balance between the cells.
  • the battery equalization module group automatic detection system uses the DC programmable power supply to form an analog battery, which can simulate various states of the battery, and can simulate multiple batteries for power supply high-precision voltage and current detection, and realize various parameter test of the equalization module. The detection time for completing the entire test is greatly shortened.
  • FIG. 1 is a block diagram showing the structure of a battery equalization module group automatic detection system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing the circuit structure of an automatic test main control board according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing the circuit structure of an equalization module grouping board according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a module structure of a battery equalization module group automatic detection system according to an embodiment of the present invention, including: a PC 10 , an automatic test main control board 20 , and two DC programmable power sources (including the first straight The stream programmable power source 41 and the second DC programmable power source 42) and the test bench in which the equalization module grouping board 30 is placed.
  • the PC 10 is a computer equipped with an automatic test upper computer software.
  • the PC 10 is connected to the MCU 21 of the automatic test main control board 20, and the PC 10 can control the entire battery equalization module group automatic detection system. The detection process and display the detection process and test results.
  • control of the battery equalization module group automatic detection system can also be accomplished by automatically testing the hardware control switches on the main control board 20.
  • the battery equalization module group automatic detection system includes a first DC programmable power source 41 and a second DC programmable power source 42.
  • the battery equalization module group automatic detection system Including at least one DC programmable power supply, the automatic test main control board is transferred to the DB9 serial port of each DC programmable power supply through the RS485 bus, and the communication protocol is distinguished according to different addresses set in advance, thereby forming a pair Independent control of each device.
  • the automatic test main control board 20 is electrically connected to the PC 10, the first DC programmable power supply 41, the second DC programmable power supply 42, and the equalization module grouping board 30, respectively.
  • the programming power supply can simulate the power supply of a plurality of battery nodes by using at least one DC programmable power supply and selectively controlling the isolating switch, and can simulate various charging states, such as charging, discharging, high voltage, undervoltage, etc., to realize various high-balanced modules. Accuracy voltage and current detection make the detection time for completing the whole set of inspections greatly shortened.
  • FIG. 2 is a schematic diagram of a circuit structure of an automatic test main control board according to an embodiment of the present invention.
  • the automatic test main control board 20 specifically includes: an MCU 21 , a current detecting module 22 , a voltage detecting module 23 , and a parameter testing switching module 24 .
  • the MCU 21 is connected to the current detecting module 22, the voltage detecting module 23, and the parameter test switching module 24, and the MCU 21 is connected to the PC 10 and the DC programmable power supply, and the current detecting module 22 is controlled by the PC 10.
  • the voltage detecting module 23 and the parameter test switching module 24 perform testing.
  • the first DC programmable power supply 41 ie, E2 in FIG. 2 and the second DC programmable power supply 42 (ie, E3 in FIG. 2) are connected in series, and the second DC programmable power supply 42 is connected.
  • One end of the first DC programmable power supply 41 is connected to a current detecting module and a current sampling resistor, and the current detecting module and the corresponding current sampling resistor are connected in parallel, and the current detecting module
  • the other end of the current sampling resistor is respectively grouped with the equalization module through a plurality of isolation switches (K1 to K10)
  • the different battery ports in the board are connected, and the grounding terminal PGND connected to the second DC programmable power supply 42 is respectively connected to different battery ports in the equalization module group board through a plurality of isolation switches (K11-K14), by selecting A suitable isolating switch, and the MCU 21 controls the state of the isolating switches K15-K16 corresponding to the current detecting module, and forms a simulation in the equal
  • one end of the voltage detecting module 23 is connected to the BIAS voltage end of the equalization module grouping board, and the other two ends of the voltage detecting module 23 are respectively connected to different battery ports in the equalizing module grouping board through a plurality of isolating switches.
  • the MCU controls the state of the corresponding isolating switch, and after using the first DC programmable power supply and the second DC programmable power supply to form an analog battery in the equalization module grouping board, the analog battery is used to obtain an equalization module correspondingly
  • the voltage information includes Vp1, Vm1, Vb, Vp2, Vm2, and the like.
  • the automatic test main control board 20 further includes a working power supply E1, and the working power supply is connected to a voltage conversion module for automatically testing the MCU, the current detecting module and the voltage detecting module of the main control board.
  • the test station is used to place the equalization module grouping board 30, and the equalization module grouping board 30 can place a plurality of equalization modules, and the equalization module grouping board 30 includes a plurality of equalization modules.
  • the equalization module grouping board 30 includes a plurality of equalization modules.
  • the test terminals including the VP-I terminal, the VM-I terminal, and the GND terminal
  • the enable terminal of the equalization module (the EN terminal) ) is connected to the battery port through the isolating switch, and the BIAS end of the equalization module is isolated
  • the voltage is connected to the voltage detection module.
  • the isolation voltage is a parameter test switching module 24 controlled by the MCU 21 for controlling analog batteries forming different states, and testing different equal
  • the power source is a DC programmable power supply, which can simulate the equalization condition of the battery under different states by programming, and can simulate multiple times by using at least one DC programmable power supply by controlling the automatic test main control board.
  • the power supply of the battery node can simulate the different use states of the battery, and realize various high-precision voltage and current detection of the equalization module, so that the detection time for completing the whole set of detection is greatly shortened.
  • the equalization modules of the equalization module grouping board 30 are respectively UA1, UA2, UA3, UB1, UB2, and UC1.
  • the MCU control chart in the main control board 20 is automatically tested.
  • the on and off states of all the isolating switches in 2 are tested one by one.
  • the MCU first controls the DC programmable power supply, turns on and sets a voltage of the DC programmable power supply, and adjusts the isolation switches K15, K16, K4, K10, K11 and K27 to K34 in Figure 2 to be turned on, and the rest. All are off state.
  • When testing the energy transfer capability of the equalization module turn off K15.
  • the measured value is recorded as Vp2 and Vm2, and the measured values of Vp1, Vm1, Vb, Ivp, Ivm, Vp2, and Vm2 are measured, and it is judged whether the energy uploading operation of the module is normal after the processing, and the K15 is turned off.
  • K16 according to the above steps to measure the module's ability to pass the work is normal, and finally will test The amount of data is sent to the host computer for display and processing. By analogy, each module is tested one by one until the test is complete.
  • the automatic test main control board is connected with a PC equipped with an automatic detecting system upper computer to obtain a command for starting detection and reporting detection data, and the upper computer can process the data. , display, save, etc.
  • the automatic test system main control board can control the on/off state of the isolation switch and the input/output voltage or current of at least one DC programmable power supply, and simulate the power supply of the plurality of battery nodes by using at least one DC programmable power supply, and It can simulate the different use states of the battery, and the main control board obtains the working condition of the equalization module in different states through the data collected by the voltage detecting module and the current detecting module.
  • the invention also provides a detection method using the above-mentioned battery equalization module group automatic detection system, and automatically tests the main control board system after power-on, firstly performs system initialization, including watchdog initialization, clock initialization, SCI1 initialization, SCI2 Initialization, SPI initialization, IIC initialization, etc.
  • system initialization including watchdog initialization, clock initialization, SCI1 initialization, SCI2 Initialization, SPI initialization, IIC initialization, etc.
  • the initialization of each communication module is initialized according to the agreed baud rate.
  • the voltage sampling module needs to be initialized separately before use.
  • the system interrupt is opened and the program main loop is entered.
  • the power supply and load need to be set to the remote control mode every time.
  • the lower computer After setting the power and load, the lower computer waits for the start command, and there are two kinds of start commands, one is the command from the upper computer, and the other is the hardware button. When one of them occurs, it means that the tester needs to test the module.
  • the lower computer first adjusts its on or off state to the state of the test module 1 through the isolating switch and the relay. After the parameter test of the BIAS of the test module 1 is completed, the test data is sent to the upper computer, and then Set the on/off state of the isolating switch and relay to test the module 2, and then cycle until the equalization module completes the group test and reports the data. Finally, the data is sent to inform the upper computer that the test has ended, and the program enters. Waiting for the status of the next test. This module tests the module's bias voltage, short circuit, load regulation, efficiency, and static power consumption.
  • the basic operation of the current equalization module can be obtained. It is determined that the bias voltage is tested after normal operation, so as to judge whether the voltage deviation of the module starts to work in equilibrium, and whether the short-circuit test can obtain the short-circuit protection capability of the equalization module. Normal, load regulation and efficiency tests can understand the ability of the module to equalize.
  • the static power test allows the tester to know whether the static power of the equalization module meets the specified value. A module can only be defined as a qualifying product if all test values have reached the set range.

Abstract

一种电池均衡模块成组自动检测系统，包括：PC机（10）、自动测试主控板（20）、至少一台直流可编程电源（41、42）和放置均衡模块成组板（30）的测试台，所述测试台中连接有多个均衡模块，所述自动测试主控板（20）分别与PC机（10）、至少一台直流可编程电源（41、42）、放置均衡模块成组板（30）的测试台电学连接，且所述自动测试主控板（20）控制用于连接测试台的各条控制连线的导通和关断，通过测试控制连线上的电压和电流的变化情况分别判断每一个均衡模块是否通过测试，从而检测成组板上的各个均衡模块在不同状态下的性能是否合格。利用本系统对于电压和电流等数据的测量精度和效率方面相比传统人工测试提高了数倍，有利于提高产品的出厂质量。

Description

电池均衡模块成组自动检测系统 技术领域
本发明涉及电池检测领域，特别涉及一种电池均衡模块成组自动检测系统。
背景技术
随着国家对治理环境污染的重视，发展清洁能源电动汽车成为社会潮流，当前制约电动汽车发展的最大因素就是整车电源的锂电池组的寿命，而单体锂电池之间存在着很大的差异，一般使用串联的方式进行包装，充放电的过程都是整包进行的，这就导致如果不对单体之间的这种差异进行处理，整包电池的寿命将大大缩短。电池均衡技术正是为了改善这一问题而产生。电池均衡模块是这一技术的基本单元，整包电池组需要一定数量的电池均衡模块组成一个完整的整车电源系统进行均衡充放电，现阶段的均衡模块主要具备的功能是增加电池组整体充电容量，改善单体电池充放电平衡，提高电池组寿命。
由于动力电池主动均衡技术刚起步，相应的检测设备比较匮乏，特别是均衡模块成组相关检测技术和具体测试内容，测试规范等没有一个标准，传统的模块测试方法主要通过人工手动测试，并且每个模块都会涉及一些运算，难免会出现纰漏，测试不规范，测试项目也不完备，很有可能测试的产品中混有不合格产品，若这样的产品应用在电池上，很有可能会造成一些未知的后果，严重的会导致单体电池被拉偏，从而影响整箱电池的寿命。同时，传统人工测试不仅需要花费大量的时间和人力成本，而且难以统计模块最终的测试结果，对于产品的升级和发展亦有所不利。因此，必须完善均衡模块成组后的自动检测系统，从而让均衡模块成组在电池箱内发挥更好的作用。
发明内容
本发明解决的问题是提供一种电池均衡模块成组自动检测系统，对于电压和电流等数据的测量精度和效率方面相比传统人工测试提高了数倍，有利于提高产品的出厂质量。
为解决上述问题，本发明实施例提供了一种电池均衡模块成组自动检测系统，包括：PC机、自动测试主控板、至少一台直流可编程电源和放置均衡模块成组板的测试台，所述测试台中连接有多个均衡模块，所述自动测试主控板分别与PC机、至少一台直流可编程电源、放置均衡模块成组板的测试台电学连接，且所述自动测试主控板控制用于连接测试台的各条控制连线的导通和关断，通过测试控制连线上的电压和电流的变化情况分别判断每一个均衡模块是否通过测试，从而检测成组板上的各个均衡模块在不同状态下的性能是否合格。
可选的，所述自动测试主控板包括MCU、电流检测模块、电压检测模块和参数测试切换模块，所述MCU分别与所述电流检测模块、电压检测模块、参数测试切换模块相连接，且所述MCU与PC机和直流可编程电源相连，通过PC机控制电流检测模块、电压检测模块、参数测试切换模块进行测试。
可选的，包括第一直流可编程电源和第二直流可编程电源。
可选的，第一直流可编程电源和第二直流可编程电源串联，且第二直流可编程电源的一端接地，所述第一直流可编程电源的两端都连接有一个电流检测模块和一个电流采样电阻，且所述电流检测模块和电流采样电阻并联连接，所述电流检测模块、电流采样电阻的另一端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接，MCU通过参数测试切换模块控制电流检测模块对应的隔离开关的状态，利用第一直流可编程电源和第二直流可编程电源在均 衡模块成组板中形成模拟电池供电，利用所述模拟电池获取均衡模块相应的电流信息。
可选的，所述电压检测模块的一端与均衡模块成组板的BIAS电压端相连，所述电压检测模块的另外两端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接，MCU通过控制对应的隔离开关的状态，利用第一直流可编程电源和第二直流可编程电源在均衡模块成组板中形成模拟电池供电，利用所述模拟电池获取均衡模块相应的电压信息。
可选的，所述第二直流可编程电源连接的接地端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接。
可选的，还包括工作电源，所述工作电源为自动测试主控板的MCU、电流检测模块和电压检测模块供电。
可选的，所述均衡模块成组板包括若干个均衡模块和若干个串联的电池端口，利用直流可编程电源和自动测试主控板中的隔离开关在不同的电池端口之间形成模拟电池供电，利用所述模拟电池实现均衡模块的各种参数测试。
可选的，所述均衡模块上的测试端与各个电池端口相连，所述均衡模块的使能端通过隔离开关与电池端口相连，所述均衡模块的BIAS端通过隔离电压与电压检测模块相连。
可选的，所述自动测试主控板通过RS485总线转接为TTL接到每个直流可编程电源的串口端。
与现有技术相比，本技术方案具有以下优点：
本自动测试系统利用PC机、自动测试主控板进行自动测试，操作简便，对于电压和电流等数据的测量精度方面相比传统人工测试提高了数倍，更加准确 的测量了模块的相关数据，提高产品的出厂质量，满足客户的需要，从而最终在延长电池组寿命和改善单体之间充放电均衡发挥作用。且本电池均衡模块成组自动检测系统利用直流可编程电源形成模拟电池，可以模拟电池的各种不同状态，且可模拟多个电池进行供电高精度电压、电流检测，实现均衡模块各种参数测试，完成整套检测的检测时间大大缩短。
附图说明
图1是本发明实施例的电池均衡模块成组自动检测系统的模块结构示意图；
图2是本发明实施例的自动测试主控板的电路结构示意图；
图3是本发明实施例的均衡模块成组板的电路结构示意图。
具体实施方式
下面结合附图，通过具体实施例，对本发明的技术方案进行清楚、完整的描述。
请参考图1，为本发明实施例的一种电池均衡模块成组自动检测系统的模块结构示意图，包括：PC机10、自动测试主控板20、两台直流可编程电源(包括第一直流可编程电源41和第二直流可编程电源42)和放置均衡模块成组板30的测试台。
所述PC机10为安装有自动测试上位机软件的计算机，所述PC机10与自动测试主控板20的MCU21相连接，利用所述PC机10可以控制整个电池均衡模块成组自动检测系统的检测过程，并显示检测过程和检测结果。
在其他实施例中，对电池均衡模块成组自动检测系统的控制还可以利用自动测试主控板20上的硬件控制开关完成。
在本实施例中，所述电池均衡模块成组自动检测系统包括第一直流可编程电源41、第二直流可编程电源42，在其他实施例中，所述电池均衡模块成组自动检测系统包括至少一个直流可编程电源，自动测试主控板通过RS485总线转接为TTL接到每个直流可编程电源的DB9串口端，通信协议按照各个事先设置的不同的地址进行区别，由此形成对各个设备的独立控制。
在本实施例中，所述自动测试主控板20分别与PC机10、第一直流可编程电源41、第二直流可编程电源42和均衡模块成组板30电学连接，通过控制直流可编程电源，利用至少一个直流可编程电源和选择性地控制隔离开关可以模拟多个电池节点的供电，且可以模拟电池的充电、放电、高压、欠压等不同使用状态，实现均衡模块各种高精度电压、电流检测，使得完成整套检测的检测时间大大缩短。
请参考图2，为本发明实施例的自动测试主控板的电路结构示意图，所述自动测试主控板20具体包括：MCU21、电流检测模块22、电压检测模块23和参数测试切换模块24，所述MCU21分别与所述电流检测模块22、电压检测模块23、参数测试切换模块24相连接，且所述MCU21与PC机10和直流可编程电源相连，通过PC机10控制电流检测模块22、电压检测模块23、参数测试切换模块24进行测试。
在本实施例中，所述第一直流可编程电源41(即图2中的E2)和第二直流可编程电源42(即图2中的E3)串联，且第二直流可编程电源42的一端接地，所述第一直流可编程电源41的两端都连接有一个电流检测模块和一个电流采样电阻，且所述电流检测模块和对应的电流采样电阻并联连接，所述电流检测模块、电流采样电阻的另一端通过多个隔离开关(K1～K10)分别与均衡模块成组 板中不同的电池端口相连接，所述第二直流可编程电源42连接的接地端PGND通过多个隔离开关(K11～K14)分别与均衡模块成组板中不同的电池端口相连接，通过选择合适的隔离开关，且MCU21通过控制电流检测模块对应的隔离开关K15～K16的状态，利用所述第一直流可编程电源41和第二直流可编程电源42在均衡模块成组板中形成模拟电池供电，利用所述模拟电池获取均衡模块相应的电流信息，所述电流信息包括Ivp、Ivm等。
同时，所述电压检测模块23的一端与均衡模块成组板的BIAS电压端相连，所述电压检测模块23的另外两端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接，MCU通过控制对应的隔离开关的状态，在利用第一直流可编程电源和第二直流可编程电源在均衡模块成组板中形成模拟电池供电后，利用所述模拟电池获取均衡模块相应的电压信息，所述电压信息包括Vp1、Vm1、Vb、Vp2、Vm2等。
在本实施例中，自动测试主控板20还包括工作电源E1，所述工作电源连接一个电压转换模块，为自动测试主控板的MCU、电流检测模块和电压检测模块供电。
请参考图2和3，所述测试台用于放置均衡模块成组板30，且所述均衡模块成组板30可以放置多个均衡模块，所述均衡模块成组板30包括若干个均衡模块(见图中的UA1、UA2、UA3、UB1、UB2、UC1)和若干个串联的电池端口(BAT0、BAT1、BAT2、BAT3、BAT4、BAT5、BAT6、BAT7、BAT8)，所述电池端口位于图3中串联的模拟电池的两端，所述均衡模块上的测试端(包括VP-I端、VM-I端和GND端)与各个电池端口相连，所述均衡模块的使能端(EN端)通过隔离开关与电池端口相连，所述均衡模块的BIAS端通过隔离电 压与电压检测模块相连。所述隔离电压即为MCU21控制的参数测试切换模块24，用于控制形成不同状态的模拟电池，并利用所述模拟电池对不同的均衡模块进行测试。
由于在现有的电池均衡测试上，使用常规电池进行检测，不能在短时间内模拟电池的不同状态，只能通过长时间的使用才能得到相应的测试状态，这就导致均衡模块测试需要花费的时间太长，不利于均衡模块较快的测试和长期的发展。而在本实施例中，所述电源为直流可编程电源，可以通过编程模拟电池不同状态下的均衡情况，且通过对自动测试主控板的控制，利用至少一个直流可编程电源可以模拟多个电池节点的供电，且可以模拟电池的不同使用状态，实现均衡模块各种高精度电压、电流检测，使得完成整套检测的检测时间大大缩短。
在本实施例中，均衡模块成组板30上有6个均衡模块分别为UA1、UA2、UA3、UB1、UB2、UC1，成组板测试时，通过自动测试主控板20中的MCU控制图2中所有的隔离开关的导通和关断的状态来对模块逐一进行测试。例如测试UA1模块时，首先MCU控制直流可编程电源，打开且设置直流可编程电源的一个电压，调节图2中的隔离开关K15、K16、K4、K10、K11及K27～K34为导通，其余均为关断状态，测试均衡模块能量上传能力时关断K15，导通K18开关测量Bias的电压记为Vb，导通K24测量VP-I的电压记为Vp1，再关断K24导通K25测量VM-I的电压记为Vm1，关断K25，导通导通K17，测量R1和R2两端电流大小分别记为Ivp和Ivm，然后导通K26测量模块使能，再测量VP-I和VM-I的电压变化情况，测量值记为Vp2和Vm2，通过测量得到的Vp1、Vm1、Vb、Ivp、Ivm、Vp2、Vm2值，进行处理后判断模块能量上传工作是否正常，导通K15关断K16按照上面的步骤测量模块能力下传工作是否正常，最后将测 量的数据发送到上位机上进行显示和处理。以此类推，逐一对每个模块进行测试，直到测试完成。
在本发明的电池均衡模块成组自动检测系统中，自动测试主控板通过与安装有自动检测系统上位机的PC机连接，获取开始检测的命令和上报检测数据，上位机可对数据进行处理、显示、保存等工作。自动测试系统主控板可以控制隔离开关的导通、关断的状态和至少一个直流可编程电源的输入输出电压或电流的大小，利用至少一个直流可编程电源模拟多个电池节点的供电，且可以模拟电池的不同使用状态，主控板通过电压检测模块和电流检测模块采集的数据获得不同状态下均衡模块的工作情况是否正常。
本发明还提供了一种采用上述电池均衡模块成组自动检测系统的检测方法，自动测试主控板系统上电后首先进行了系统初始化，其中包含看门狗初始化、时钟初始化、SCI1初始化、SCI2初始化、SPI初始化、IIC初始化等。每个通信模块的初始化都要按照协定的波特率进行初始化，电压采样模块在使用前需要单独进行初始化。初始化完成后打开系统中断，进入程序主循环。为了避免电源或负载断电后上电，而测试板在仍然正常使用的情况下、也需要重新上电才可以控制电源或负载工作，所以每测试一次都需要设置电源和负载为远程控制模式，并且处于关闭的状态。设置完电源和负载之后，下位机等待开始命令，其中开始命令有两种，一种是来自上位机的命令，一种是硬件按钮。当发生其中之一，都表示测试人员需要进行模块的测试。当已收到开始命令，下位机首先通过隔离开关和继电器调整其导通或者关断的状态为测试模块1的状态，测试模块1的BIAS等参数测试完成后发送测试数据到上位机，再重新设置隔离开关和继电器的导通或者关断状态进行模块2的测试，依次循环直到均衡模块成组测试完成并且上报数据，最后发送数据通知上位机测试已结束，程序进入 等待下一次测试的状态。以此规则分别对模块的偏置电压、短路、负载调整率、效率和静态功耗等进行测试等。
通过测试BIAS电压可得到当前均衡模块基本工作是否正常，确定正常工作后进行偏置电压的测试，以此来判断模块开始均衡工作的电压偏差是否合格，短路测试可以得到均衡模块的短路保护能力是否正常，负载调整率和效率的测试可以了解模块均衡的能力，静态功耗测试让测试人员知道均衡模块的静态功耗是否符合规定值。只有当所有的测试值均达到设定的范围，模块才能被定义为合格的产品。
本发明虽然已以较佳实施例公开如上，但其并不是用来限定本发明，任何本领域技术人员在不脱离本发明的精神和范围内，都可以利用上述揭示的方法和技术内容对本发明技术方案做出可能的变动和修改，因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化及修饰，均属于本发明技术方案的保护范围。

Claims (10)

  1. 一种电池均衡模块成组自动检测系统，其特征在于，包括：PC机、自动测试主控板、至少一台直流可编程电源和放置均衡模块成组板的测试台，所述测试台中连接有多个均衡模块，所述自动测试主控板分别与PC机、至少一台直流可编程电源、放置均衡模块成组板的测试台电学连接，且所述自动测试主控板控制用于连接测试台的各条控制连线的导通和关断，通过测试控制连线上的电压和电流的变化情况分别判断每一个均衡模块是否通过测试，从而检测成组板上的各个均衡模块在不同状态下的性能是否合格。
  2. 如权利要求1所述的电池均衡模块成组自动检测系统，其特征在于，所述自动测试主控板包括MCU、电流检测模块、电压检测模块和参数测试切换模块，所述MCU分别与所述电流检测模块、电压检测模块、参数测试切换模块相连接，且所述MCU与PC机和直流可编程电源相连，通过PC机控制电流检测模块、电压检测模块、参数测试切换模块进行测试。
  3. 如权利要求2所述的电池均衡模块成组自动检测系统，其特征在于，包括第一直流可编程电源和第二直流可编程电源。
  4. 如权利要求3所述的电池均衡模块成组自动检测系统，其特征在于，第一直流可编程电源和第二直流可编程电源串联，且第二直流可编程电源的一端接地，所述第一直流可编程电源的两端都连接有一个电流检测模块和一个电流采样电阻，且所述电流检测模块和电流采样电阻并联连接，所述电流检测模块、电流采样电阻的另一端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接，MCU通过参数测试切换模块控制电流检测模块对应的隔离开关的状态，利用第一直流可编程电源和第二直流可编程电源在均衡模块成组板中形成模拟 电池供电，利用所述模拟电池获取均衡模块相应的电流信息。
  5. 如权利要求4所述的电池均衡模块成组自动检测系统，其特征在于，所述电压检测模块的一端与均衡模块成组板的BIAS电压端相连，所述电压检测模块的另外两端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接，MCU通过控制对应的隔离开关的状态，利用第一直流可编程电源和第二直流可编程电源在均衡模块成组板中形成模拟电池供电，利用所述模拟电池获取均衡模块相应的电压信息。
  6. 如权利要求4所述的电池均衡模块成组自动检测系统，其特征在于，所述第二直流可编程电源连接的接地端通过多个隔离开关分别与均衡模块成组板中不同的电池端口相连接。
  7. 如权利要求2所述的电池均衡模块成组自动检测系统，其特征在于，还包括工作电源，所述工作电源为自动测试主控板的MCU、电流检测模块和电压检测模块供电。
  8. 如权利要求1所述的电池均衡模块成组自动检测系统，其特征在于，所述均衡模块成组板包括若干个均衡模块和若干个串联的电池端口，利用直流可编程电源和自动测试主控板中的隔离开关在不同的电池端口之间形成模拟电池供电，利用所述模拟电池实现均衡模块的各种参数测试。
  9. 如权利要求8所述的电池均衡模块成组自动检测系统，其特征在于，所述均衡模块上的测试端与各个电池端口相连，所述均衡模块的使能端通过隔离开关与电池端口相连，所述均衡模块的BIAS端通过隔离电压与电压检测模块相连。
  10. 如权利要求1所述的电池均衡模块成组自动检测系统，其特征在于，所述自动测试主控板通过RS485总线转接为TTL接到每个直流可编程电源的串口端。
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