Electric vehicle energy management method, energy storage management controller and energy management unit

The invention provides an electric vehicle energy management method, an energy storage management controller and an energy management unit. The energy storage management controller firstly controls abattery to carry out the high-voltage power distribution on a high-voltage device, provides high-voltage power for a battery thermal management system, supplies power to a low-voltage power supply ofa whole vehicle through a DCDC power supply, then detects the working states of the battery, the high-voltage device and the battery thermal management system, and sends a control instruction according to the working states so as to carry out power-on and power-off control on the high-voltage device and carry out charging and discharging management on the battery. Therefore, the energy storage management controller can independently realize high-voltage management of the electric vehicle, and does not need a VCU and a BMS to realize decentralized management of high-voltage devices in the priorart, so that the problems