Power management system of agricultural electric working vehicle and relay control method

A power management system for an agricultural electric work vehicle, the power management system comprising:

• a battery pack configured to supply power;
• a power distributor configured to distribute and supply the power, output from the battery pack, to individual electrical components;
• and
• a master controller configured to be able to control the battery pack and the power distributor;
• wherein the battery pack comprises:
• a battery module configured to supply the power;
• and
• a first relay module configured to relay the power, output from the battery module, to the power distributor and regulate the power output from the battery module;
• wherein the power distributor comprises:
• a second relay module connected to the first relay module, and configured to regulate the power output from the battery pack;
• and
• a distribution circuit configured to distribute the power, output through the second relay module, to the electrical components;
• and
• wherein the master controller, when power supply is switched to an OFF state, turns off the second relay module and then performs control so that the first relay module is turned off.