The invention relates to a method and a system for equalizing the battery SOC of a battery system of an electric vehicle, and a vehicle with the equalizing system. The method comprises the steps of determining single SOC data of a plurality of single batteries based on acquired voltages of the plurality of single batteries, determining intra-module equalization target SOC data of each battery module based on the single SOC data, and determining inter-module equalization target SOC data of the battery system based on the intra-module equalization target SOC data and the single SOC data, and determining an SOC equalization strategy for the battery system based on the inter-module equalization target SOC data, the intra-module equalization target SOC data and the single body SOC data. According to the scheme, the equalization system elements of the battery system do not need to be changed complexly, the SOC equalization strategy of the battery module is introduced, and high-speed and high-efficiency battery equalization control with the cost advantage is realized.
本申请涉及用于对电动车辆的电池系统的电池SOC进行均衡的方法、系统以及具有该均衡系统的车辆。该方法包括基于获取的多个单体电池的电压确定多个单体电池的单体SOC数据,基于单体SOC数据确定每个电池模组的模组内均衡目标SOC数据,基于模组内均衡目标SOC数据和单体SOC数据确定电池系统的模组间均衡目标SOC数据,以及基于模组间均衡目标SOC数据,模组内均衡目标SOC数据和单体SOC数据确定用于电池系统的SOC均衡策略。上述方案无需对电池系统的均衡系统元件进行复杂改动,引入电池模组的SOC均衡策略,实现高速高效并且具有成本优势的电池均衡控制。
METHOD AND SYSTEM FOR EQUALIZING STATE OF CHARGE OF BATTERY
用于对电池的电荷状态进行均衡的方法和系统
2022-12-06
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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