Hydrogen energy automobile multi-pre-charging PDU system and pre-charging method thereof

A hydrogen energy and pre-charging technology, which is applied to electric vehicles, vehicle parts, hydrogen transportation technology, etc., can solve the problems of prolonged pre-charging time and high-voltage load, so as to reduce energy loss, reduce failure rate, and shorten pre-charging time. The effect of the time required
CN112356676APending Publication Date: 2021-02-12WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
Publication Date
2021-02-12

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Abstract

The invention discloses a hydrogen energy automobile multi-pre-charging PDU system comprising a power supply module which comprises a power supply contactor and a power battery, the power supply contactor is connected with a power supply, and the power battery is connected with the power supply contactor; a pre-charging module which comprises an auxiliary high-voltage system pre-charging module, ahydrogen fuel cell high-voltage system pre-charging module and a chassis driving high-voltage system pre-charging module; and a pre-charging system which comprises an auxiliary high-voltage system, ahydrogen fuel cell high-voltage system and a chassis driving high-voltage system. The invention discloses a pre-charging method of the hydrogen energy automobile multi-pre-charging PDU system. The pre-charging method comprises the steps that pre-charging of a high-voltage system is assisted; a hydrogen fuel cell high-voltage system is pre-charged; and the chassis driving high-voltage system is pre-charged. According to the invention, the pre-charging time can be shortened, the pre-charging waiting time is reduced, the structure of the high-voltage power distribution system can be optimized, and the failure rate is reduced.
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Description

technical field

[0001] The invention relates to the technical field of new energy vehicles. More specifically, the present invention relates to a hydrogen energy vehicle multi-precharge PDU system and a precharge method thereof. Background technique

[0002] With the promotion and popularization of hydrogen fueled new energy vehicles, more and more automobile companies have begun to pay attention to the research and development of hydrogen fuel cell new energy vehicles. Since hydrogen fuel cell vehicles have many more high-voltage devices than traditional new energy vehicles, resulting in more high-voltage loads in the circuit, the traditional pre-charging circuit design will greatly lengthen the pre-charging time. Contents of the invention

[0003] It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will be described later.

[0004] Another purpose of the present invention is to provide a m...

Claims

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