Cause the problem of bad pin jack on the charging gun terminal

　　The pin jack on the terminal of the charging gun often has problems during use, so why do these things happen? Let's take a look together.

　　1. The unreasonable crimping of the pin jack on the charging gun terminal causes the contact resistance to be too high and the temperature rise is too high

　　The crimping of the cable inner core and the terminal, the crimping contact surface develops towards point contact, and there is not enough contact surface.

　　If the crimping force is too large, the wire will be broken and the current-carrying capacity will decrease.

　　If the crimping force is too small, the crimping will not be firm enough, which will cause a virtual connection.

　　2. The unreasonable selection of the material of the pin socket on the terminal of the charging gun and the unreasonable selection of the plating layer cause the temperature rise after use to burn it.

　　The choice of the copper core material is different from the choice of the plating layer, which has an impact on the conductivity between the charging gun body and the socket, and the difference in the material will also affect the hardness of the terminal.

　　If the difference is too large, and the number of times exceeds a certain number, the coating on the surface will be damaged to varying degrees, and the contact resistance generated during matching will be too high, which will affect the temperature rise.

　　The treatment of the anti-static plug also affects the coordination of the terminals.

　　3. The anti-electric plug of the pin jack on the charging gun terminal is easy to fall off

　　The connection between the plug and the terminal is unreliable and easy to loosen. When the charging gun product is designed for actual work, the temperature rises, the plug is easy to fall off, and there are certain problems in the structural design.

　　4. The accuracy of the pin socket on the charging gun terminal is insufficient, and the matching of the charging gun and the pin socket is relatively poor, resulting in a virtual connection

　　The processing precision of the copper core is unreasonable, and the tolerance is too large, resulting in too tight or too loose fit with the pin socket.

　　The unreasonable deformation of the matching elastic body behind the charging socket causes a certain deviation in the matching with the copper core.

　　The different plug forms of the charging sockets on the vehicle end result in different contact resistances.

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