The invention discloses a branch current calculation method and system of a battery system, a vehicle and equipment. The branch current calculation method of the battery system comprises the steps that a first-order equivalent circuit model of each branch, an equivalent circuit current model of the battery system and a voltage model are established, and the equivalent circuit current model comprises the relation between current of each branch and current source parameters; obtaining a state equation of current of each branch according to the first-order equivalent circuit model, the equivalent circuit current model and the voltage model of each branch; obtaining a model parameter of the first-order equivalent circuit model of each branch and a current source parameter; and according to the model parameters of the first-order equivalent circuit model of each branch and the current source parameters, solving the state equation to obtain the current of each branch. According to the invention, the problems of non-uniform charging current of the battery and branch loop current during standing can be effectively controlled, the safety of the battery is improved, and the service life of the battery is prolonged.
本申请公开了一种电池系统的支路电流计算方法、系统、车辆及设备。电池系统的支路电流计算方法,包括:建立每个支路的一阶等效电路模型、所述电池系统的等效电路电流模型以及电压模型,所述等效电路电流模型包括各支路电流与电流源参数之间的关系;根据每个支路的一阶等效电路模型、等效电路电流模型以及电压模型,得到各支路的电流的状态方程;获得所述每个支路的一阶等效电路模型的模型参数以及所述电流源参数;根据所述每个支路的一阶等效电路模型的模型参数以及所述电流源参数,求解所述状态方程,得到各支路的电流。采用本申请,能够对电池充电不均流和静置时支路环流问题进行有效地控制,提升了电池的安全性和使用寿命。
Branch current calculation method and system of battery system, vehicle and equipment
电池系统的支路电流计算方法、系统、车辆及设备
2024-06-28
Patent
Electronic Resource
Chinese
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