Hydrogen fuel cell system architecture based on bidirectional DCDC

The utility model discloses a hydrogen fuel cell system architecture based on bidirectional DCDC, which comprises a hydrogen fuel cell, a fuel cell DCDC and a load which are connected in sequence, the fuel cell DCDC is connected with the load through a high-voltage bus, and the hydrogen fuel cell is connected with a low-voltage hydrogen fuel cell auxiliary part and a high-voltage hydrogen fuel cell auxiliary part. The high-voltage bus is connected with the high-voltage end of the bidirectional DCDC, the low-voltage lithium battery is connected with the low-voltage end of the bidirectional DCDC, the high-voltage bus is connected with the auxiliary part of the low-voltage hydrogen fuel cell through the step-down DC, and the auxiliary part of the high-voltage hydrogen fuel cell is connected with the high-voltage bus. According to the utility model, the low-voltage small-capacity lithium battery is combined with the bidirectional DCDC to replace the traditional high-capacity lithium battery scheme, and the low-vo