Abstract: The present disclosure relates to a battery current monitoring method, a controller and a circuit. The method is applied to a current monitoring circuit, the current monitoring circuit includes a hall sensor, a controller and a constant voltage source.

Abstract: The present disclosure relates to a battery current monitoring method, a controller and a circuit. The method is applied to a current monitoring circuit, the current monitoring circuit includes a hall sensor, a controller and a constant voltage source.

Abstract: The present application relates to a battery system and a parallelization method and apparatus thereof. The parallelization method of the battery system includes: acquiring voltages of the battery packs respectively; setting a charging priority of each of the battery packs according to a preset rule and the voltages of the battery packs; and controlling the switching circuit corresponding to the battery pack in the highest charging priority to be turned on to connect a charging loop of the battery pack for charging, and if the voltage of the battery pack currently charged is increased to a value close to the voltage of the battery pack in a next charging priority, controlling the switching circuit corresponding to the battery pack in the next charging priority to be turned on.