The pin jacks on the EV charging connector often have problems in use, so why do these situations occur? Let's take a look.
The unreasonable crimping of the pin jack on the ev charging connector causes the contact resistance to be too high and the temperature rise to be too high
With the crimping of the cable core and the terminal, the crimp contact surface develops to point contact, and there is no sufficient contact surface.
If the crimping force is too large, the wire will be broken and the current-carrying capacity will be reduced.
The crimping force is too small, causing the crimping to be weak and causing a virtual connection.
The selection of the pin jack material on the ev charging connector and the unreasonable selection of the coating will cause the temperature rise after use to be too high to burn it.
The selection of the copper core material is different from the selection of the coating, which has an impact on the conductivity between the charging gun body and the socket, and the different materials 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 is too high, which will affect the temperature rise.
The treatment of the anti-static plug also affects the coordination of the terminals.
The connection between the plug and the terminal is unreliable, and it is easy to loosen. When the EV charging connector product is designed to work, the temperature rises and the plug is easy to falls off, and there are certain problems with the structural design.
The accuracy of the pin jack on the EV charging connector is insufficient, and the coordination between the EV charging connector and the pin jack is relatively poor, resulting in the virtual connection
The machining accuracy of the copper core is unreasonable, and the tolerance is too large, resulting in a too tight or too loose a fit with the pin jack.
The unreasonable deformation of the elastic body fitted at the rear of the charging socket causes a certain deviation in the fitting with the copper core.
The contact resistance of the charging socket on the vehicle end is different due to the different plug forms.