Patent ID: 9184476
Filing Date: 2015-11-10
Classification: H01M,H02J,Y02E,Y02T,Y02W

Abstract:
1. A battery module control system, comprising: a plurality of battery modules that are connected to each other in parallel; switch circuits that are provided on each charge and discharge routes of the plurality of battery modules; an average impedance value calculation section that calculates each average impedance values of the plurality of battery modules; a maximum allowable charge-and-discharge rate input section that inputs maximum allowable charge-and-discharge rates of the plurality of battery modules; an allowable voltage difference calculation section that calculates each allowable voltage differences of the plurality of battery modules on the basis of the average impedance values calculated by the average impedance value calculation section and the maximum allowable charge-and-discharge rates input by the maximum allowable charge-and-discharge rate input section; a common voltage detection section that detects a voltage of a common charge and discharge route of the plurality of battery modules; and a plurality of voltage detection sections that detect respective voltages of the plurality of battery modules, wherein when a difference between the voltage detected by the common voltage detection section and the voltage detected by the voltage detection section corresponding to a predetermined battery module is greater than an allowable voltage difference of the predetermined battery module, a switch circuit provided on a charge and discharge route of the predetermined battery module is so controlled as to be turned OFF, and wherein the maximum allowable charge-and-discharge rate is used to define a maximum current with which a certain battery module from among the plurality of battery modules can be charged and discharged.