Battery management method, battery management device and equipment powered by battery

The invention provides a battery management method, a battery management device and equipment powered by a battery, and relates to the technical field of communication. Harmful effects caused by bias current and ring current can be controlled effectively, and the bias current and the ring current are generated when batteries or battery packs of different capacities and materials are directly utilized in parallel. The method is capable of managing two or more than two parallel batteries or battery packs in a circuit, and a parallel branch is formed by the branch where each parallel battery or battery pack is located. The method comprises: whether a current value of a target parallel branch is larger than a preset current value or not is detected; when the detected current value of the target parallel branch is larger than the preset current value, the current value of the target parallel branch is adjusted to be smaller than or equal to the preset current value. The battery management method is used for management of parallel batteries.