Automatic take-up and pay-off device and take-up and pay-off method for off-board direct-current charger

Abstract

The invention discloses an automatic take-up and pay-off device for an off-board direct-current charger. The automatic take-up and pay-off device comprises a transmission mechanism, a wire spool and a charging cable. The wire spool and the charging cable are connected onto the transmission mechanism, the transmission mechanism is mounted inside the charger, the wire spool is mounted at an end of the transmission mechanism and is positioned on the outer side of the charger, the transmission mechanism comprises a transmission shaft, a first bearing, a first gear, a second bearing, a second gear and a transmission motor, an end of the charging cable is connected with a charging gun, the charging cable is connected to an internal output port of the charger after being wound on the wire spool and the transmission shaft by a plurality of circles, and the portions, which are wound on the wire spool, of the charging cable and the portions, which are wound on the transmission shaft, the charging cable are coaxially wound in different directions. The automatic take-up and pay-off device has the advantages that the charging cable can be automatically taken up and paid off and further can be guaranteed against being excessively tightened when the charging cable is taken up and paid off, accordingly, the running flexibility of equipment can be guaranteed, and the service life of the charging cable can be prolonged.

Description

technical field [0001] The invention relates to a take-up and pay-off wire, in particular to an automatic take-up and pay-off device for a non-vehicle DC charger. Background technique [0002] With the advancement of new energy vehicles in our country, the number of electric vehicles is growing rapidly, which also drives the rapid development of charging equipment. Non-vehicle DC chargers have been rapidly promoted because of their fast charging speed, high safety, and ease of use. When charging an electric vehicle, the charging gun is aligned with the charging port of the electric vehicle to achieve charging, and the charging gun is connected to the charging pile by a charging cable. The charging gun of the general charging machine is placed on the gun stock of the charging machine, and the charging cable is often scattered on the ground (just like the gas station refueling gun), when charging is required, the charging gun is removed from the gun stock, and then Drag the c...

AI Technical Summary

Problems solved by technology

[0003] The defect of the current existing technology is: because the charging cable is scattered on the ground, it is very easy to be stepped on by people passing by, and even crushed by an electric vehicle, so that the outer insulation of the charging cable will be damaged very quickly, and the replacement cost is very high. High, and if it is not found in time, it will cause accidents such as electric shock; in order to solve the situation that the charging cable is scattered on the ground randomly, install a wire hanger on the side of the charger, and wind the charging cable on the wire hanger. Take it off in a circle, and then wind it up in a circle after it is used up. However, the charging voltage of electric vehicles is very high, and the charging current is very large, so the cable of the charging cable is thicker. To the charging socket, its length is often longer, which leads to the weight of the charging cable will be very heavy, and it is very inconvenient to drag, not to mention winding around the hanging rack, especially for women with little strength. , if it cannot be hung up, it is directly stacked on the ground, which is equivalent to not setting up a hanging rack

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