Circuit board assembly, control system and vehicle

The utility model discloses a circuit board assembly, a control system and a vehicle, the circuit board assembly comprises a circuit board body and a high-voltage direct current wire harness, the circuit board body is provided with a through hole penetrating through the circuit board body, the high-voltage direct current wire harness comprises a connecting part located at one end part, the connecting part is at least partially inserted in the through hole, and the through hole is communicated with the circuit board body. And the connecting part is connected with the inner wall of the through hole for conduction. The high-voltage direct-current wire harness is directly connected with the circuit board body, so that the assembly process is simplified, and the processing time is reduced; and elements such as a copper terminal, a fixing nut, a screw, an anti-deflection tool and the like are omitted, so that the manufacturing cost is saved. According to the circuit board assembly, the through hole is formed in the