Battery charging and discharging control method and device, distributed battery system and equipment

Abstract

This invention discloses a battery charging and discharging control method, apparatus, distributed battery system, and device. The method is applied to any battery node in a distributed battery system and includes: determining the charging and discharging mode of the distributed battery system; acquiring charging and discharging data of itself and other battery nodes in the charging and discharging mode; the charging and discharging data includes at least the state of charge and health state of each battery node; determining a load allocation coefficient, a first parameter, and a second parameter based on the charging and discharging data; the load allocation coefficient characterizes its relative charging and discharging capacity, the first parameter characterizes the charge balance among battery nodes, and the second parameter characterizes the current balance among battery nodes; determining a target control strategy based on the load allocation coefficient, the first parameter, and the second parameter; and adjusting the switching duration of the charging and discharging switching devices based on the target control strategy. This achieves precise adaptive and coordinated control of batteries in different health states, improving the system's charging and discharging efficiency.

Images