Battery unit, power supply and distribution system, power supply and distribution control method, and vehicle

The invention relates to the field of power supply and distribution, and provides a battery unit, a power supply and distribution system, a power supply and distribution control method and a vehicle. The battery unit comprises a battery pack and a power distribution assembly, the power distribution assembly comprises a first battery controller and a first switch piece, and the first switch piece is arranged on a line between the battery pack and a load; the first battery controller is connected with the first switch piece; the first battery controller is used for controlling the first switch part to work according to a control signal of the load so as to control the battery pack to connect or disconnect with the load. Through reasonable arrangement of the battery pack and the power distribution assembly, the battery unit has a power distribution function and can independently supply power to a load, and the whole power supply and distribution system is more convenient to control and maintain the battery unit;