A battery system includes: two battery modules each including three battery cell strings configured to: be connected in series and connected to a first positive terminal via a first switch of switches at different times; via a second one of the switches, connected in parallel and to a second positive terminal; and disconnecting from both the first positive terminal and the second positive terminal; and a switching control module configured to: determine a state of charge (SOC) of the string, respectively; determining periods of the stages, respectively, based on the SOC; determining a first period of time for connecting a plurality of strings in the string in series; dividing one of the stages into N time periods of equal length; selectively reducing N; when a number of first periods closest to an end of one of the N period end points is at least a predetermined value, the first periods are adjusted to respective closest period end points of the N period end points.

    一种电池系统,包括:两个电池模块,每个包括三个电池单元串,电池单元串配置成在不同时间:经由开关中的第一开关串联连接并连接到第一正端子;经由开关中的第二开关并联连接并连接到第二正端子;以及从第一正端子和第二正端子两者断开连接;以及开关控制模块,所述开关控制模块配置成:分别确定串的荷电状态(SOC);基于SOC来分别确定阶段的时段;确定将所述串中的多个串并联连接的第一时段;将所述阶段中的一个分成N个长度相等的时段;选择性地减少N;当最接近N个时段结束点中的一个结束的第一时段的数量至少是预定值时,将第一时段调整为所述N个时段结束点的相应最接近时段结束点。


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    Title :

    Switching duration setting for battery string state of charge balancing


    Additional title:

    用于电池串荷电状态平衡的切换持续时间设定


    Contributors:

    Publication date :

    2023-06-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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