DCDC protection control system and method for hydrogen fuel cell vehicle

The invention provides a DCDC protection control system and method for a hydrogen fuel cell vehicle and belongs to the technical field of high-power vehicle-mounted power supplies of hydrogen fuel cell vehicles. The system comprises a hydrogen fuel cell, a BSM software unit, a control module and a charging module; the hydrogen fuel cell is used for inputting a direct-current high voltage into thecharging module and the BSM software unit; the BSM software unit is used for receiving states of the hydrogen fuel cell and a lithium battery and issuing converted instructions to the control module;the control module is used for calculating input and output power and temperature values, making corresponding adjustment, issuing the adjusted power and temperature values to the charging module; andthe charging module is used for receiving the instructions of the control module, making corresponding adjustment after receiving the instructions, converting the direct-current high voltage and outputting a converted voltage