Hydrogen energy automobile high-voltage power distribution PDU system and power distribution method thereof

Abstract

The invention discloses a hydrogen energy automobile high-voltage power distribution PDU system and a power distribution method thereof. The system comprises a first high-voltage power distribution unit and a second high-voltage power distribution unit, wherein the first high-voltage power distribution unit is electrically connected with a fuel cell and a first high-voltage electric device in a cabin, and the first high-voltage power distribution unit is further provided with a pre-charging interface; the second high-voltage power distribution unit is electrically connected with the fuel cell,the auxiliary energy source and the second high-voltage electric device, a pre-charging output port is formed in the second high-voltage power distribution unit, and the pre-charging output port is electrically connected with the pre-charging interface through a high-voltage wiring harness. The high-voltage power distribution PDU system is divided into the first high-voltage power distribution unit and the second high-voltage power distribution unit, the first high-voltage power distribution unit meets the power distribution requirement of the first high-voltage electric device in the cabin,and the second high-voltage power distribution unit meets the power distribution requirement of the second high-voltage electric device; only one high-voltage wire harness is needed as a pre-chargingwire harness for connection between the first high-voltage power distribution unit and the second high-voltage power distribution unit, and the number of the high-voltage wire harnesses is reduced.

Description

technical field [0001] The invention relates to the technical field of hydrogen energy vehicles, in particular to a hydrogen energy vehicle high-voltage power distribution PDU system and a power distribution method thereof. Background technique [0002] The full name of the PDU is the high-voltage power distribution box unit. The hydrogen fuel cell vehicle needs the PDU to distribute the high-voltage power provided by the hydrogen reactor and auxiliary energy to the fuel cell air compressor, drive motor controller, steering motor controller, and fuel cell PTC. electrical device. [0003] The hydrogen fuel cell model code-named NVE1 adopts a rear-mounted rear-drive method. The drive motor, motor controller, and auxiliary energy such as power batteries and super capacitors are all arranged near the rear axle of the car. The hydrogen reactor and its accessories, steering motor control High-voltage electrical devices such as generators and fuel cell PTCs are arranged in the eng...

AI Technical Summary

Problems solved by technology

[0004] The changing high-voltage current in the high-voltage wiring harness will generate an electromagnetic field, which will lead to the risk of electromagnetic compatibility of the whole vehicle. In severe cases, it may affect the vehicle control signal, interfere with the control system of the on-board computer, and even cause safety accidents such as car accidents;

[0005] Since the high-voltage platform of the whole vehicle is 576V high voltage, the high-voltage wiring harness is too long and there is a risk of leakage. High-voltage leakage is directly harmful to personal safety. If there is a high-voltage leakage and flooding, it will cause immeasurable losses;

[0006] The cost is too high, the wire diameter of the high-voltage wire harness is relatively thick, and the safety level of the wire harness is high. Too many high-voltage wire harnesses will cause excessive cost pressure, and the high cost will reduce the market competitiveness of the vehicle

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