Direct-current charging gun of new energy electric automobile

Abstract

The invention relates to the technical field of electric vehicle charging guns, and particularly relates to a direct-current charging gun of a new energy electric automobile; the direct-current charging gun comprises a gun body, a charging plug and a locking plate, wherein a charging contact pin is arranged in the charging plug; the gun body is of an integrated forming structure, and an inner cavity is formed in the gun body; an assembling cavity which is independent from the inner cavity and is not communicated with the inner cavity is formed in the upper part of the gun body; the locking plate is movably arranged at the opening of the assembling cavity; a detection assembly is arranged at the bottom of the locking plate in the assembling cavity; a sealing shell is arranged outside the detection assembly; a contact pin fixing base for fixing the contact pin is arranged in the charging plug, and a contact pin fixing hole is formed in the contact pin fixing base; a temperature monitoring hole is formed in the edge side of the contact pin fixing hole; a temperature monitoring device for monitoring the temperature in the position of the charging contact pin is arranged in the temperature monitoring hole; the temperature monitoring hole is poured and sealed with glue; the structure strength, the protection level and the safety performance of the charging gun are high, so that electrified operation of a user can be avoided; and the structure of the gun body conforms to the human engineering design, the grabbing is convenient and labor-saving, and the charging operation is facilitated.

Description

technical field [0001] The invention relates to the technical field of charging guns for new energy vehicles, in particular to DC charging guns for new energy electric vehicles. Background technique [0002] New energy electric vehicles refer to vehicles that use electricity as energy and are driven by electric motors. The exhaust emissions of new energy electric vehicles are zero. With the policy support and car purchase subsidies for new energy vehicles at home and abroad, the promotion and popularization of new energy vehicles have already It has become an inevitable trend, and supporting equipment such as charging guns related to new energy vehicles are also receiving more and more attention from manufacturers. [0003] At present, the charging methods of new energy electric vehicles are divided into DC charging and AC charging. The charging of new energy electric vehicles requires the use of charging guns. In DC charging, the charging current of the DC charging gun is ...

AI Technical Summary

Problems solved by technology

In DC charging, the charging current of the DC charging gun is relatively large (generally greater than 100A), which is prone to safety accidents. Therefore, the user’s live plugging operation during the charging process must be absolutely prohibited. The release sequence of the inner long and short pins prevents the user from live plugging and unplugging. However, in actual use, due to the different plugging speeds of users, this method cannot completely eliminate the phenomenon of live plugging and unplugging.

[0004] In addition, the shells of the existing DC charging guns are all composed of splicing. The overall strength of the charging gun is low, and the waterproof performance is also poor. Cause damage, and, due to the intrusion of rainwater, the charging gun has a greater safety hazard in use

There is generally no temperature monitoring device inside the existing charging gun, and the charging current is large, and a large amount of heat will be generated during charging. The heat in the gun charging is monitored, and the existing charging gun cannot do this.

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