The invention relates to the technical field of automobile battery systems, in particular to a vehicle-mounted BMS function safety signal control method, which comprises the following steps: on the basis of an E-GAS three-layer architecture, encrypting an output interface signal of a function monitoring layer through an AES algorithm, and uploading the output interface signal of a function layer to a microcontroller chip for processing; the microcontroller chip decodes the encrypted signal through an AES algorithm, the decoded signal is compared with the functional layer without the functional security level requirement, and if deviation occurs during comparison, namely deviation or function failure occurs during operation of the functional layer without the functional security level requirement, the BMS immediately makes a security action, so that the system is kept in a security state; according to the invention, the fault condition of the vehicle can be accurately judged, and a coping strategy can be timely made, so that the safety performance of the whole vehicle is improved.

    本发明涉及汽车电池系统技术领域,具体是一种车载BMS功能安全信号控制方法,在E‑GAS三层架构的基础上,对功能监控层的输出接口信号通过AES算法进行加密,将功能层的输出接口信号上传至微控制器芯片中进行处理;微控制器芯片通过AES算法对加密信号进行解码,解码后与无功能安全等级要求的功能层进行对比,若对比时出现偏差,即无功能安全等级要求的功能层运算时出现偏差或功能失效,BMS立即做出安全动作,使系统保持在安全状态;本发明能够准确的判断车辆的故障状况,进而及时的作出应对策略,以提高整车的安全性能。


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    Title :

    Vehicle-mounted BMS function safety signal control method


    Additional title:

    一种车载BMS功能安全信号控制方法


    Contributors:
    XU JUNFENG (author) / LUO HUAN (author) / WANG YUN (author) / JIANG MINGJUN (author) / SUN YAN (author) / LIU HUAN (author) / JIANG ZIXIAN (author)

    Publication date :

    2023-12-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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