Distributed Battery, Battery Control Method, and Electric Vehicle

A distributed battery pack power supply system, a charging control method, and a discharging control method, where a plurality of battery packs or battery groups is directly coupled in parallel or indirectly coupled in parallel as required using a charging/discharging circuit of the distributed battery pack power supply system and a corresponding control policy. A distributed battery includes a plurality of battery packs, and further includes a controller, a bidirectional voltage transformation circuit, a bypass circuit, a charging circuit, and a charging input end. Each battery pack corresponds to one bypass circuit and one bidirectional voltage transformation circuit.