The invention discloses a communication control method for an electric vehicle, a power battery and a battery management system, the method can be applied to a main control unit in the battery management system, the battery management system comprises the main control unit and N battery cell management units, the battery cell management units are cascaded, and N is a positive integer; the method comprises the following steps: after determining a first communication direction and a second communication direction of communication between the battery cell management unit and each battery cell management unit, judging whether an accumulated time length of communication according to a current communication direction reaches a preset time length or not; if the judgment result is yes, switching to another communication direction for communication, that is, the bidirectional circulating communication between the main control unit and the cell management units can be utilized to ensure the consistency of the power consumption of each cell management unit to the cell; the problem of inconsistent power consumption of each battery cell management unit in the battery management system in the signal acquisition process of each battery cell management module in each round of the battery management system in the prior art is solved.

    本申请公开了一种电动汽车、动力电池、电池管理系统的通讯控制方法,该方法可应用于电池管理系统中的主控单元,电池管理系统包括一个主控单元和N个电芯管理单元,各个电芯管理单元之间级联,N为正整数;该方法在确定出自身与各个电芯管理单元进行通讯的第一通讯方向和第二通讯方向之后,判断按照当前通讯方向进行通讯的累计时长是否达到预设时长;若判断结果为是,则切换至另一通讯方向进行通讯,也即,本申请可以利用主控单元与电芯管理单元的双向循环通信,保证各个电芯管理单元对电芯耗电的一致性,解决了现有方案在电池管理系统每轮对各个电芯管理模块的信号采集过程中,会导致电池管理系统中各个电芯管理单元出现功耗不一致的问题。


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    Title :

    Communication control method for electric vehicle, power battery and battery management system


    Additional title:

    电动汽车、动力电池、电池管理系统的通讯控制方法


    Contributors:
    LU KEWEI (author) / LI JI (author) / LI YANG (author) / CHEN WENDI (author)

    Publication date :

    2024-04-02


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY




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