A battery system includes: a first positive terminal; a second positive terminal; a negative terminal; a switch; two battery modules, each battery module comprising three strings of battery cells configured to, at different times: connect in series and to the first positive terminal via a first of the switches; a second positive terminal connected in parallel and connected to the second positive terminal through a second one of the switches; and disconnected from both the first and second positive terminals; and a switching control module configured to: determine a state of charge (SOC) of the battery cell strings, respectively; respectively determining periods of phases using model predictive control to balance the SOC of the battery module; determining periods for the battery cell strings using model predictive control, respectively, including setting one of the periods of one of the battery cell strings to be included in at least two of the phases; and selectively actuate the switch based on the period of the phase and the period for the string of battery cells.
一种电池系统,包括:第一正极端子;第二正极端子;负极端子;开关;两个电池模块,每个电池模块包括三串电池单元,这些电池单元被配置成在不同的时间:串联连接,并且经由开关中的第一开关连接到第一正极端子;并联连接并通过开关中的第二开关连接到第二正极端子;以及与第一和第二正极端子两者都断开;以及开关控制模块,其被配置成:分别确定电池单元串的电量状态(SOC);使用模型预测控制分别确定阶段的周期,以平衡电池模块的SOC;使用模型预测控制分别确定用于所述电池单元串的周期,包括将所述电池单元串中的一个的周期中的一个设置为包括在所述阶段中的至少两个中;并且基于阶段的周期和用于电池单元串的周期选择性地致动开关。
Battery string state of charge balancing with stage sharing
具有阶段共享的电池串电量状态平衡
2023-06-06
Patent
Electronic Resource
Chinese
IPC: | 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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