Mechanical series-parallel switching mechanism with modular expandability, battery module, and multi-module battery system

Abstract

This invention provides a series-parallel switching mechanism, a battery module, and a multi-module battery system. The series-parallel switching mechanism is applicable to battery modules, which include a first battery and a second battery. The first battery has a first BMS board, and the second battery has a second BMS board. Each BMS board has a pair of power terminals and an output terminal. The power terminals of the first BMS board are electrically connected to the first battery, and the output terminal is connected to a rotatable first blade. The power terminals of the second BMS board are electrically connected to the second battery, and the output terminal is connected to a rotatable second blade. The series-parallel switching mechanism includes a transmission mechanism that synchronously drives the first and second blades to swing, selectively activating the corresponding battery's connection structure according to different positions, thus achieving rapid series-parallel switching within and between battery modules.

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