Protection device of new energy charging socket

Abstract

The invention relates to a protection device of a new energy charging socket, which comprises a micro electronic lock provided with a forward and reverse rotation motor and a BMS. The micro electroniclock and the BMS are connected through an electronic lock forward rotation power line, an electronic lock reverse rotation power line and an electronic lock feedback signal line; the micro electroniclock is installed on the side wall of a charging socket; the micro electronic lock is provided with a locking piece used for locking a charging gun, the locking piece is connected with the forward and reverse rotation motor, the charging gun is provided with a matching piece matched with the locking piece, the charging gun is provided with a low-voltage signal wire harness and a high-voltage signal wire harness, the low-voltage signal wire harness is connected with the BMS, and the high-voltage signal wire harness is connected with a high-voltage cabinet. The device comprises three charging gun modes, namely a charging gun inserting charging mode, a charging gun pulling-out completing charging mode and a charging gun pulling-out uncompleted charging mode. Compared with the prior art, thedevice has the advantages that high-voltage electric shock danger to an operator caused by pulling out a charging gun under the condition that the charging gun carries high voltage is avoided, and theservice life of a charging socket is prolonged.

Description

technical field [0001] The invention relates to the technical field of new energy passenger car equipment, in particular to a protection device for a new energy charging socket. Background technique [0002] At present, the power systems on new energy buses mainly include: fuel power, pure electric battery power, and fuel cell power. With the development of the domestic automobile industry, pure electric powertrain passenger cars have occupied a major position in recent years. However, no matter the power bus of pure electric bus or the hydrogen fuel-powered bus in the rapid development stage, it is necessary to have a power battery that stores energy to convert electrical energy into mechanical energy to drive the vehicle. However, there are still some safety hazards in the medium and high voltage charging of the power battery of the new energy bus. For example, during the charging process, the operator may not disconnect the charging gun or pull out the high voltage charg...

AI Technical Summary

Problems solved by technology

However, there are still some safety hazards in the medium and high voltage charging of the power battery of the new energy bus. For example, during the charging process, the operator may not disconnect the charging gun or pull out the high voltage charging gun by mistake.

This kind of operation has the following disadvantages: 1. It is easy to cause electric shock to the operator when plugging and unplugging; 2. The current generated by plugging and unplugging will damage the life of the charging socket terminal

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