A battery management system and a battery management system control method

Abstract

The application provides a battery management system and a battery management system control method, which comprise a master control module and a slave control module, the master control module comprises a sending circuit, an isolation circuit, a rectifier circuit and a comparison circuit, and the slave control module comprises a sending circuit, an isolation circuit, a rectifier circuit and a comparison circuit; the sending circuit is electrically connected with the isolation circuit and is used for transmitting a voltage input signal of the module where the sending circuit is located to the isolation circuit of the module; the isolation circuit is used for being communicatively connected with the isolation circuit in other modules and transmitting data in a superposition form; the rectifier circuit in the master control module or the slave control module is electrically connected with the isolation circuit and is used for rectifying an electric signal when the electric signal is received by the isolation circuit; and the comparison circuit in the master control module or the slave control module is electrically connected with the rectifier circuit and is used for receiving a signal input by the rectifier circuit, so that bidirectional communication of the master control and the slave control is realized.

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