Multiple-protection high-voltage distribution box applied to new energy automobile

Abstract

The invention relates to a multiple-protection high-voltage distribution box applied to a new energy automobile. The high-voltage distribution box comprises a high-voltage distribution box body, a high-voltage power supply part and a low-voltage control part; the high-voltage distribution box body is composed of a high-voltage distribution shell and insulation terminals; the high-voltage power supply part is composed of a high-voltage connector socket, a copper bar, contactors, a precharge resistor, fuses, a service switch and high-voltage connectors; the low-voltage control part is composed of relays, low-voltage wiring harnesses, low-voltage wiring harness transfer boards and a low-voltage connector. The multiple-protection high-voltage distribution box applied to the new energy automobile has the advantages that the high voltage is controlled through the low voltage, the contactor is controlled through the corresponding relay for each circuit, and direct control over the contactors is avoided; by means of multi-layer isolation of the relays and the contactors, a human body can not make contact with the high voltage directly, and use is safer.

Description

technical field [0001] The invention relates to a high-voltage power distribution device for providing high-voltage power for vehicle equipment on a new energy vehicle, in particular to a high-voltage power distribution box applied to a new energy vehicle and having multiple protections. Background technique [0002] With the promotion and development of electric vehicle technology, its safety issues are becoming more and more important. The biggest difference between electric vehicles and fuel vehicles is that they use direct current with a very high voltage, which will cause great safety hazards to the human body. Therefore, we must control the on-off of high voltage reasonably and scientifically, and disconnect the high voltage immediately when a failure occurs. Avoid direct contact between the human body and high-voltage electricity, and reduce the damage of high voltage to the human body. [0003] Among the existing equipment, cars without a high-voltage power distribu...

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Problems solved by technology

[0004] In addition, the equipment on new energy vehicles has a certain withstand current. If the safe upper limit of the current is exceeded, it will cause certain damage to the equipment and have a very serious impact on the safety of passengers and vehicles.

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