CN112255556B - Battery pack off-line detection method and system - Google Patents

Battery pack off-line detection method and system Download PDF

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CN112255556B
CN112255556B CN202010366482.8A CN202010366482A CN112255556B CN 112255556 B CN112255556 B CN 112255556B CN 202010366482 A CN202010366482 A CN 202010366482A CN 112255556 B CN112255556 B CN 112255556B
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battery pack
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bms
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CN112255556A (en
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魏海潮
贾智军
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Svolt Energy Technology Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • G01R31/3865Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to the technical field of batteries, and provides a battery pack offline detection method, which comprises the following steps: acquiring a DBC message of the battery pack in response to a test signal; analyzing the content of the DBC message, and determining whether to trigger an alarm tag; and obtaining a detection result of the battery pack according to the state of the alarm tag. Meanwhile, a battery pack off-line detection system and a corresponding storage medium are also provided. The embodiment provided by the invention has the beneficial effects of no need of increasing hardware cost, good compatibility to battery specifications and shortening detection time.

Description

电池包下线检测方法及系统Battery pack off-line detection method and system

技术领域technical field

本发明涉及电池技术领域,特别涉及一种电池包下线检测方法、一种电池包下线检测系统以及对应的存储介质。The present invention relates to the technical field of batteries, in particular to a battery pack off-line detection method, a battery pack off-line detection system and a corresponding storage medium.

背景技术Background technique

电池包在组装完成后需要进行下线检测,具体包括:安规测试、高低压电气隔离性能测试、充放电性能测试,还包括测试电池包DCR,电芯DCR,动态压差,温升测试等,EOL测试,包括BMS上报的电芯电压,温度,绝缘阻值,这些测试项是客户提出的必测项,项目繁多,节拍较长。After the battery pack is assembled, it needs to be tested offline, including: safety test, high and low voltage electrical isolation performance test, charge and discharge performance test, as well as battery pack DCR, cell DCR, dynamic pressure difference, temperature rise test, etc. , EOL test, including cell voltage, temperature, and insulation resistance reported by BMS. These test items are required by customers. There are many items and a long cycle time.

以上测试项经过逐一测试,逐一判定测试规格是否合理,整套电池包测试项通过BMS DBC上报,设备采集后对比测试规格对比当前测试项是否合格,若测试规格设置错误,则测试项误判导致电池包误拦截或误流出到客户,造成严重的安全事故或质量风险。故提出需要新的测试方法,提高测试节拍,但同时测试能覆盖所有测试项。The above test items are tested one by one to determine whether the test specifications are reasonable one by one. The whole set of battery pack test items is reported through the BMS DBC. After the equipment is collected, the test specifications are compared and the current test items are qualified. Packages are mistakenly intercepted or flowed out to customers, causing serious security incidents or quality risks. Therefore, it is proposed that a new test method is needed to improve the test tempo, but at the same time, the test can cover all test items.

DBC,(Data Base CAN),数据库CAN文件。DBC, (Data Base CAN), database CAN file.

BMS,(BATTERY MANAGEMENT SYSTEM),电池管理系统。BMS, (BATTERY MANAGEMENT SYSTEM), battery management system.

CAN,(Controller Area Network),控制器局域网络。CAN, (Controller Area Network), controller area network.

发明内容Contents of the invention

有鉴于此,本发明旨在提出电池包下线检测方法及系统,以至少解决目前电池包的下线自动测试中失效项目的检测效率问题。In view of this, the present invention aims to propose a battery pack off-line detection method and system to at least solve the problem of detection efficiency of failure items in the current automatic off-line test of battery packs.

在本发明的第一方面,提供了一种电池包下线检测方法,所述检测方法包括:In the first aspect of the present invention, a battery pack off-line detection method is provided, the detection method comprising:

获取所述电池包响应于测试信号的DBC报文;Obtaining the DBC message of the battery pack responding to the test signal;

解析所述DBC报文的内容,确定是否触发告警标签;Analyzing the content of the DBC message to determine whether to trigger an alarm label;

根据所述告警标签的状态,得到所述电池包的检测结果。According to the state of the warning label, the detection result of the battery pack is obtained.

优选的,所述告警标签为DBC中的预设报文的标签。Preferably, the alarm label is a label of a preset message in the DBC.

优选的,所述解析所述DBC报文的内容,确定是否触发告警标签,包括:Preferably, said parsing the content of said DBC message to determine whether to trigger an alarm label includes:

将解析出的DBC报文的内容,在预设的告警策略表中进行匹配;Match the content of the parsed DBC message in the preset alarm policy table;

根据匹配结果,确定是否触发告警标签;According to the matching result, determine whether to trigger the warning label;

所述告警策略表包括与测试项目相对应的告警条目,每条告警条目包括:所述测试项不合格时对应的故障阈值、诊断故障码和故障确认条件,以及是否触发所述告警标签。The alarm policy table includes alarm entries corresponding to test items, and each alarm entry includes: the corresponding fault threshold, diagnostic trouble code and fault confirmation condition when the test item fails, and whether to trigger the alarm label.

优选的,所述解析所述DBC报文的内容的步骤是由BMS执行的,且所述告警策略表预设于所述BMS的应用层中。Preferably, the step of parsing the content of the DBC message is performed by the BMS, and the alarm strategy table is preset in the application layer of the BMS.

优选的,所述方法还包括:确定所述告警标签被触发,缓存触发所述告警标签的DBC报文。Preferably, the method further includes: determining that the warning tag is triggered, and caching the DBC message that triggers the warning tag.

优选的,所述测试信号根据所述测试项目,由预设程序依次发出。Preferably, the test signals are sequentially sent out by a preset program according to the test items.

在本发明的第二方面,还提供了一种电池包下线检测系统,所述检测系统包括:In the second aspect of the present invention, a battery pack off-line detection system is also provided, and the detection system includes:

上位机,用于根据内置的电池包下线测试的测试程序,向所述电池包发送测试信号;The upper computer is used to send a test signal to the battery pack according to the built-in test program of the offline test of the battery pack;

低压连接器,用于提供所述检测系统与所述电池包的低压连接接口;a low-voltage connector for providing a low-voltage connection interface between the detection system and the battery pack;

供电电源,用于向所述检测系统提供低压供电;A power supply, used to provide low-voltage power supply to the detection system;

CAN通信模块,用于检测装置与充放电机的CAN通讯;以及CAN communication module, used for CAN communication between the detection device and the charging and discharging motor; and

所述检测装置,采用前述的电池包下线检测方法,得到所述电池包的检测结果。The detection device adopts the above-mentioned offline detection method of the battery pack to obtain the detection result of the battery pack.

优选的,所述检测装置为BMS;所述BMS包括:Preferably, the detection device is a BMS; the BMS includes:

获取模块,用于获取所述电池包响应于测试信号的DBC报文;An acquisition module, configured to acquire the DBC message that the battery pack responds to the test signal;

解析判定模块,用于解析所述DBC报文的内容,确定是否触发告警标签;An analysis and determination module is used to analyze the content of the DBC message to determine whether to trigger an alarm label;

结果输出模块,用于根据所述告警标签的状态,得到所述电池包的检测结果。The result output module is configured to obtain the detection result of the battery pack according to the status of the warning label.

优选的,所述BMS还包括:EOL模式开关;所述EOL模式开关被用于在所述BMS上电后初始化完成后,且所述EOL模式开关处于激活状态时,执行前述的电池包下线检测方法。Preferably, the BMS further includes: an EOL mode switch; the EOL mode switch is used to execute the aforementioned battery pack off-line operation after the initialization of the BMS is completed after power-on and the EOL mode switch is activated. Detection method.

本发明第三方面还提供一种计算机可读存储介质,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行前述的电池包下线检测方法。The third aspect of the present invention also provides a computer-readable storage medium, where instructions are stored in the storage medium, and when the storage medium is run on a computer, the computer is made to execute the aforementioned battery pack offline detection method.

通过本发明提供的上述技术方案,具有以下有益效果:The technical solution provided by the present invention has the following beneficial effects:

(1)通过现有的BMS即可实现EOL测试所有项和规格判定,不需要增加硬件成本。(1) All items and specifications of EOL test can be determined through the existing BMS, without increasing hardware costs.

(2)规格判定不需要在EOL测试设备上设定,通过BMS DBC标签上报方式完成,避免了因规格被改动导致失效电池包误流出风险。(2) The specification judgment does not need to be set on the EOL test equipment, and it is completed through the BMS DBC label reporting method, which avoids the risk of incorrect outflow of failed battery packs due to specification changes.

(3)显著缩短检测时间,测试节拍可以从5min缩短至1min。(3) Significantly shorten the detection time, and the test cycle can be shortened from 5min to 1min.

本发明的其它特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present invention will be described in detail in the detailed description that follows.

附图说明Description of drawings

构成本发明的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施方式及其说明用于解释本发明,并不构成对本发明的不当限定。The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic implementations and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

在附图中:In the attached picture:

图1是本发明一种实施方式提供的电池包下线检测方法的流程示意图;Fig. 1 is a schematic flowchart of a battery pack off-line detection method provided by an embodiment of the present invention;

图2是本发明一种实施方式提供的电池包下线检测方法中的告警策略表;Fig. 2 is an alarm strategy table in a battery pack offline detection method provided by an embodiment of the present invention;

图3是本发明一种实施方式提供的电池包下线检测装置的模块结构图;3 is a block diagram of a battery pack off-line detection device provided in an embodiment of the present invention;

图4是本发明一种实施方式提供的电池包下线检测方法的具体流程图。Fig. 4 is a specific flowchart of a battery pack offline detection method provided by an embodiment of the present invention.

具体实施方式Detailed ways

需要说明的是,在不冲突的情况下,本发明中的实施方式及实施方式中的特征可以相互组合。It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

图1是本发明一种实施方式提供的电池包下线检测方法的流程示意图,如图1所示,一种电池包下线检测方法,所述检测方法包括:Fig. 1 is a schematic flowchart of a battery pack off-line detection method provided by an embodiment of the present invention. As shown in Fig. 1 , a battery pack off-line detection method includes:

获取所述电池包响应于测试信号的DBC报文;解析所述DBC报文的内容,确定是否触发告警标签;根据所述告警标签的状态,得到所述电池包的检测结果。Obtain the DBC message of the battery pack in response to the test signal; analyze the content of the DBC message to determine whether to trigger an alarm label; obtain the detection result of the battery pack according to the state of the alarm label.

如此,通过DBC报文得到测试结果,并根据该测试结果以及预先设定的规则进行判断:是否触发告警标签。从而只需获取一个告警标签的状态,就能得到电池包的下线检测的最终结果。由此避免了对每一个测试项目的测试结果进行判定,不仅提升了故障判定的自动化,还将检测时间显著缩短。In this way, the test result is obtained through the DBC message, and it is judged according to the test result and the preset rules: whether to trigger the alarm label. Therefore, the final result of the offline detection of the battery pack can be obtained only by obtaining the state of one warning label. This avoids the need to judge the test results of each test item, which not only improves the automation of fault judgment, but also significantly shortens the detection time.

具体的,本实施方式是通过输入测试信号,并得到电池包对该测试信号的反馈,该测试信号例如碰撞信号、充电信号、放电信号等,其测试项对应于安规测试程序、BMS静态测试启动程序等。正常的电池包对于测试信号的反馈是可以预期的,当其反馈不符合需要的测试结果或者出现告警信号时,即认为该电池包的测试不合格。电池包的告警反馈通过CAN网络,以DBC报文的形式进行传输,因此通过解析测试信号对应的DBC报文,获取告警信息,更接近实际的工作场景,避免对消息通信进行改造。由于测试项目很多,对应的反馈的CAN消息需要一一判别,严重影响测试进度,因此本实施方式采用内部判定的方法,设置一个统一的告警标签,通过测试反馈的CAN消息对告警标签的触发,以告警标签的最终状态得到该电池包的下线检测结果。Specifically, in this embodiment, the test signal is input and the feedback of the test signal from the battery pack is obtained. The test signal is such as a collision signal, a charging signal, a discharging signal, etc., and its test items correspond to safety test procedures and BMS static tests. Start the program, etc. The feedback of the test signal from the normal battery pack can be expected. When the feedback does not meet the required test results or an alarm signal appears, the test of the battery pack is considered to be unqualified. The alarm feedback of the battery pack is transmitted in the form of DBC messages through the CAN network. Therefore, by analyzing the DBC messages corresponding to the test signals, the alarm information is obtained, which is closer to the actual working scene and avoids the transformation of message communication. Since there are many test items, the corresponding feedback CAN messages need to be judged one by one, which seriously affects the test progress. Therefore, this embodiment adopts the method of internal judgment, sets a unified alarm label, and triggers the alarm label through the test feedback CAN message. Get the offline detection result of the battery pack based on the final state of the warning label.

在本发明提供的一种实施方式中,所述告警标签为DBC中的预设报文的标签。DBC,即数据库CAN文件,用于解析CAN网络中所传输的信号。该告警标签需要对其进行实现的定义,本实施方式是通过在现有的CAN通讯矩阵加入一帧报文来实现的,并可以将其命名为BMS_EOL_syserr。BMS_EOL_syserr上报的值为1或0,当其上报1故障包失效分析,上报0时正常电池包下线出货。通过将该标签设置为CAN报文的格式,利用了实际电池包的通信网络,避免了对电池包管理的通信机制上的改进。In an implementation manner provided by the present invention, the alarm label is a label of a preset message in the DBC. DBC, the database CAN file, is used to analyze the signals transmitted in the CAN network. The alarm label needs to be defined for its implementation. In this embodiment, a frame message is added to the existing CAN communication matrix, and it can be named BMS_EOL_syserr. The value reported by BMS_EOL_syserr is 1 or 0. When it reports 1 failure package failure analysis, when it reports 0, the normal battery pack is offline and shipped. By setting the label as the format of the CAN message, the communication network of the actual battery pack is used, and the improvement of the communication mechanism of the battery pack management is avoided.

在本发明提供的一种实施方式中,所述解析所述DBC报文的内容,确定是否触发告警标签,包括:将解析出的DBC报文的内容,在预设的告警策略表中进行匹配;根据匹配结果,确定是否触发告警标签;所述告警策略表包括与测试项目相对应的告警条目,每条告警条目包括:所述测试项不合格时对应的故障阈值、诊断故障码和故障确认条件,以及是否触发所述告警标签。图2是本发明一种实施方式提供的电池包下线检测方法中的告警策略表,该告警策略表是根据汇总客户要求EOL所有测试项和测试规格,制作而成的表格。测试人员可以根据实际的测试要求,对该告警策略表进行适应性的调整,增加或减少表格中的内容。表格中的故障名称和代码项目是利用现有的告警列表,其是否触发告警标签是本实施方式中需要增加的列。In an embodiment provided by the present invention, the parsing the content of the DBC message to determine whether to trigger an alarm label includes: matching the content of the parsed DBC message in a preset alarm strategy table ;According to the matching result, determine whether to trigger the alarm label; the alarm policy table includes alarm entries corresponding to the test items, and each alarm entry includes: the corresponding failure threshold, diagnostic trouble code and failure confirmation when the test item is unqualified condition, and whether to trigger the alert tag. Fig. 2 is an alarm policy table in the battery pack off-line detection method provided by an embodiment of the present invention. The alarm policy table is a table made according to summarizing all test items and test specifications of EOL required by customers. Testers can make adaptive adjustments to the alarm strategy table according to actual test requirements, and increase or decrease the content in the table. The fault name and code items in the table use the existing alarm list, and whether it triggers the alarm label is a column that needs to be added in this embodiment.

在本发明提供的一种实施方式中,所述解析所述DBC报文的内容的步骤是由BMS执行的,且所述告警策略表预设于所述BMS的应用层中。BMS,电池管理系统,是电动汽车中对电池的管理装置,其实现的功能包括:充放电控制、动态监测和电池均衡,也包括了对电池的故障管理。现有技术中,电池的告警均通过CAN网络传输至BMS并进行呈现的,因此本实施方式采用BMS执行DBC报文的解析只是利用了BMS的原有功能,不会增加BMS的负担。同时将告警策略表预设于所述BMS的应用层中,通过应用层的功能开发,将告警标签的判断程序写入,将告警与预先写入的告警策略表继续匹配,以得到告警标签的触发逻辑。In an implementation manner provided by the present invention, the step of parsing the content of the DBC message is performed by a BMS, and the alarm policy table is preset in an application layer of the BMS. BMS, battery management system, is a management device for batteries in electric vehicles. Its functions include: charge and discharge control, dynamic monitoring and battery balancing, and also includes fault management of batteries. In the prior art, battery alarms are transmitted to the BMS through the CAN network and presented. Therefore, in this embodiment, the use of the BMS to analyze the DBC message only utilizes the original functions of the BMS and does not increase the burden on the BMS. At the same time, the alarm policy table is preset in the application layer of the BMS, through the function development of the application layer, the judgment program of the alarm label is written, and the alarm is continuously matched with the pre-written alarm policy table to obtain the alarm label. trigger logic.

在本发明提供的一种实施方式中,所述方法还包括:确定所述告警标签被触发,缓存触发所述告警标签的DBC报文。当告警标签被触发后,可以得出该电池包下线测试“未通过”的结论。为了进一步的排查故障,需要定位到具体的故障代码,以获取故障产生的现象和原因。因此在告警标签被触发后,进一步将触发所述告警标签的DBC报文缓存在测试系统或BMS中,供检测方进行读取,以此便于排查出电池的具体故障原因。In an implementation manner provided by the present invention, the method further includes: determining that the warning tag is triggered, and caching the DBC message that triggers the warning tag. When the alarm label is triggered, it can be concluded that the offline test of the battery pack "failed". In order to further troubleshoot the fault, it is necessary to locate the specific fault code to obtain the phenomenon and cause of the fault. Therefore, after the alarm tag is triggered, the DBC message triggering the alarm tag is further cached in the test system or BMS for the detection party to read, so as to facilitate the troubleshooting of the specific cause of the battery failure.

优选的,所述测试信号根据所述测试项目,由预设程序依次发出。现有的电池测试均采用自动测试的方式,据前文所述,可以采用配置有预设程序的上位机进行测试步骤的依次执行以及测试信号的依次发出。通过预设程序的自动测试,不仅提升了测试效率,还能够模拟车辆的实际运行状况。Preferably, the test signals are sequentially sent out by a preset program according to the test items. Existing battery tests all adopt the automatic test method. According to the foregoing, a host computer equipped with a preset program can be used to execute the test steps sequentially and send the test signals sequentially. Through the automatic test of the preset program, not only the test efficiency is improved, but also the actual operating condition of the vehicle can be simulated.

在本发明提供的一种实施方式中,还提供了一种电池包下线检测系统,所述检测系统包括:上位机,用于根据内置的电池包下线测试的测试程序,向所述电池包发送测试信号;以安规测试为例,在本实施方式中,安规测试程序装载在所述上位机上,其可控制动力电池包以及与动力电池包适配进行安规测试的电路、器件等来完成要求的各个安规测试项目。In one embodiment provided by the present invention, a battery pack off-line detection system is also provided. The detection system includes: a host computer, which is used to send the battery package to send test signals; taking the safety test as an example, in this embodiment, the safety test program is loaded on the host computer, which can control the power battery pack and the circuits and devices that are adapted to the power battery pack for safety test Wait to complete the required safety test items.

低压连接器,用于提供所述检测系统与所述电池包的低压连接接口;本实施方式中的型号优选为HE-024-M连接器,具有绝缘性能好,安全系数高和安装方便的特点。The low-voltage connector is used to provide the low-voltage connection interface between the detection system and the battery pack; the model in this embodiment is preferably the HE-024-M connector, which has the characteristics of good insulation performance, high safety factor and convenient installation .

供电电源,用于向所述检测系统提供低压供电;常用的低压电源为12V,Power supply, used to provide low-voltage power supply to the detection system; commonly used low-voltage power supply is 12V,

CAN通信模块,用于检测装置、充放电机的CAN通讯连接;以及所述检测装置,采用前述的电池包下线检测方法,得到所述电池包的检测结果。The CAN communication module is used for the CAN communication connection of the detection device and the charging and discharging machine; and the detection device adopts the aforementioned battery pack off-line detection method to obtain the detection result of the battery pack.

在本发明提供的一种实施方式中,所述检测装置为BMS;所述BMS包括:获取模块,用于获取所述电池包响应于测试信号的DBC报文;解析判定模块,用于解析所述DBC报文的内容,确定是否触发告警标签;结果输出模块,用于根据所述告警标签的状态,得到所述电池包的检测结果。图3是本发明一种实施方式提供的电池包下线检测装置的模块结构图,如图3所示,所述多个模块/单元可以是能够完成特定功能的一系列计算机程序指令段,该指令段用于描述所述计算机程序在终端设备中的执行过程。例如,所述计算机程序可以被分割成获取模块、解析判定模块和结果输出模块(虚拟装置中的模块),各模块具体功能如前文所述。In one embodiment provided by the present invention, the detection device is a BMS; the BMS includes: an acquisition module, configured to acquire the DBC message of the battery pack in response to the test signal; an analysis and determination module, configured to analyze the The content of the DBC message is used to determine whether to trigger the warning label; the result output module is used to obtain the detection result of the battery pack according to the state of the warning label. Fig. 3 is a module structure diagram of a battery pack off-line detection device provided by an embodiment of the present invention. As shown in Fig. 3, the multiple modules/units may be a series of computer program instruction segments capable of completing specific functions. The instruction segment is used to describe the execution process of the computer program in the terminal device. For example, the computer program can be divided into an acquisition module, an analysis and determination module, and a result output module (modules in the virtual device), and the specific functions of each module are as described above.

在本发明提供的一种实施方式中,所述BMS还包括:EOL模式开关;所述EOL模式开关被用于在所述BMS上电后初始化完成后,且所述EOL模式开关处于激活状态时,执行前述的电池包下线检测方法。通过设置EOL模式开关,具有如下优点:BMS_EOL_Syserr标签只有在切换到EOL模式才上报故障,而在前述的标签没有激活时,BMS执行正常的操作。整车下线后,关闭该“EOL模式开关”,此时BMS切回“整车模式”,整车端不会因下线测试规格和整车不同而产生误报警问题,因此具有良好的兼容性。In an implementation manner provided by the present invention, the BMS further includes: an EOL mode switch; the EOL mode switch is used when the initialization of the BMS is completed after the BMS is powered on, and the EOL mode switch is in an active state , executing the aforementioned battery pack offline detection method. By setting the EOL mode switch, it has the following advantages: the BMS_EOL_Syserr label only reports a fault when it is switched to the EOL mode, and when the aforementioned label is not activated, the BMS performs normal operations. After the vehicle is offline, turn off the "EOL mode switch", at this time the BMS switches back to the "vehicle mode", and the vehicle end will not cause false alarms due to the different specifications of the offline test and the vehicle, so it has good compatibility sex.

图4是本发明一种实施方式提供的电池包下线检测方法的具体流程图,如图4所示,包括以下步骤:Fig. 4 is a specific flow chart of a battery pack off-line detection method provided in an embodiment of the present invention, as shown in Fig. 4 , including the following steps:

1)电池包通过低压连接器与电源进行连接,获得工作电压12V;1) The battery pack is connected to the power supply through a low-voltage connector to obtain a working voltage of 12V;

2)BMS初始化完成后,判断EOL模式开关的状态;2) After the BMS initialization is completed, judge the state of the EOL mode switch;

3)确认EOL模式开启后,开始读取测试信号触发的DBC报文;3) After confirming that the EOL mode is enabled, start reading the DBC message triggered by the test signal;

4)在测试过程中,监测BMS_EOL_syserr的状态是否为0;4) During the test, monitor whether the state of BMS_EOL_syserr is 0;

5)若不为0,则通过查策略表分析DBC报文数据;5) If it is not 0, then analyze the DBC message data by checking the strategy table;

6)定位触发BMS_EOL_syserr的不合格项目,对其进行对应的修复;6) Locate the unqualified item that triggers BMS_EOL_syserr, and repair it accordingly;

7)修复完成后,继续进行测试。若无法完成修复,则该电池作为失效部件报废。7) After the repair is complete, continue with the test. If the repair cannot be completed, the battery is discarded as a failed component.

在本发明提供的一种实施方式中,还提供了一种存储介质,所述存储介质中存储有指令,当其在计算机上运行时,使得计算机执行前述的电池包下线检测方法。In one embodiment provided by the present invention, a storage medium is also provided, and instructions are stored in the storage medium, and when the instructions are run on a computer, the computer is made to execute the aforementioned method for detecting that the battery pack is offline.

通过本发明提供的实施方法,通过现有的BMS即可实现EOL测试所有项和规格判定,无需增加硬件成本;并且规格判定不需要在EOL测试设备上设定,通过BMS DBC标签上报方式就能完成,避免了因规格变动导致失效电池包误流出风险。具体的,通过检测BMS DBC上报的系统故障,BMS_EOL_Syserr识别整包的系统故障,通过一项测试即可发现整车所有故障,测试规格不需要设置,测试节拍可以从5min缩短至1min,且不增加测试成本,是下线测试低成本高效率无差错的较好的测试解决方案。Through the implementation method provided by the present invention, all items of the EOL test and specification judgment can be realized through the existing BMS, without increasing hardware costs; and the specification judgment does not need to be set on the EOL test equipment, and can be reported through the BMS DBC label Completed, avoiding the risk of false outflow of failed battery packs due to specification changes. Specifically, by detecting system faults reported by BMS DBC, BMS_EOL_Syserr identifies system faults of the entire package, and all faults of the entire vehicle can be found through one test. The test specification does not need to be set, and the test cycle can be shortened from 5min to 1min without increasing Test cost is a better test solution for offline testing with low cost, high efficiency and error-free.

本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is described with reference to flowcharts and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

在一个典型的配置中,计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

存储器可能包括计算机可读介质中的非永久性存储器,随机存取存储器(RAM)和/或非易失性内存等形式,如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and/or nonvolatile memory such as read only memory (ROM) or flash RAM. The memory is an example of a computer readable medium.

计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括,但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质,可用于存储可以被计算设备访问的信息。按照本文中的界定,计算机可读介质不包括暂存电脑可读媒体(transitory media),如调制的数据信号和载波。Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

以上仅为本申请的实施例而已,并不用于限制本申请。对于本领域技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本申请的权利要求范围之内。The above are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (8)

1. A battery pack offline detection method, characterized in that the detection method comprises:
acquiring a DBC message of the battery pack in response to a test signal;
analyzing the content of the DBC message, and determining whether to trigger an alarm tag;
obtaining a detection result of the battery pack according to the state of the alarm tag;
the alarm tag is a tag of a preset message in the DBC; the analyzing the content of the DBC message and determining whether to trigger an alarm tag comprises the following steps:
matching the content of the analyzed DBC message in a preset alarm strategy table;
determining whether to trigger an alarm tag according to the matching result;
the alarm policy table includes alarm entries corresponding to test items, each alarm entry including: and the fault threshold value, the diagnosis fault code and the fault confirmation condition corresponding to the unqualified test item and whether the alarm tag is triggered or not.
2. The method according to claim 1, wherein the parsing the contents of the DBC message is performed by a BMS, and the alarm policy table is preset in an application layer of the BMS.
3. The method of detection according to claim 1, wherein the method of detection further comprises:
and determining that the alarm tag is triggered, and caching DBC messages for triggering the alarm tag.
4. The method according to claim 1, wherein the test signals are sequentially emitted by a preset program according to the test items.
5. A battery pack offline detection system, the detection system comprising:
the upper computer is used for sending a test signal to the battery pack according to a built-in detection program for detecting the battery pack in an off-line manner;
a low voltage connector for providing a low voltage connection interface of the detection system and the battery pack;
the power supply is used for providing low-voltage power supply for the detection system;
the CAN communication module is used for CAN communication between the detection device and the charging and discharging machine; and
the detection device obtains a detection result of the battery pack by adopting the battery pack offline detection method according to any one of claims 1 to 4.
6. The detection system of claim 5, wherein the detection device is a BMS; the BMS includes:
the acquisition module is used for acquiring the DBC message of the battery pack responding to the test signal;
the analysis judging module is used for analyzing the content of the DBC message and determining whether an alarm tag is triggered or not;
and the result output module is used for obtaining the detection result of the battery pack according to the state of the alarm tag.
7. The detection system of claim 6, wherein the BMS further comprises: an EOL mode switch;
the EOL mode switch is used to perform the battery pack offline detection method of any one of claims 1 to 4 when the EOL mode switch is in an active state after initialization is completed after the BMS is powered up.
8. A computer readable storage medium having instructions stored therein, which when run on a computer causes the computer to perform the battery pack offline detection method according to any one of claims 1 to 4.
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