Spark-proof charging unit

Abstract

The invention discloses a charging device preventing a spark from arising. The charging device comprises a telescopic device, a driving device, a plug, a detector and a controller. The telescopic device comprises a fixing part and a moving part; the driving device is used for driving the moving part of the telescopic device; the plug comprises a plug insulating base, a long charging contact, a short charging contact and a signal contact, the plug insulating base is connected with the moving part, the long charging contact, the short charging contact and the signal contact are installed in the plug insulating base and extend out of the plug insulating base, and the extending length of the short charging contact is larger than that of the signal contact and smaller than that of the long charging contact; the detector is used for detecting the advancing position of the plug; the controller is used for receiving information detected through the detector and controlling the operating state of the driving device. The charging device will be powered on only when the three contacts make contact stably, so that the contacts make stable contact with electrodes after the plug is powered on, no gap exists, the spark can be prevented from arising in the process that the plug is inserted into a socket, and usage is safer.

Description

technical field [0001] The invention relates to a spark-proof charging device. Background technique [0002] When the traditional plug is inserted into the socket, because the current is directly loaded on the electrical components of the electrical equipment, and because the electrical components have a short time from no-load to full voltage and a large voltage, there is a very small gap between the plug and the socket. When there is a gap, the air will be ionized, and sparks will be generated instantly. When the power of the electrical equipment is relatively large, a large spark will be generated and a large amount of heat will be generated at the moment of plugging, which will gradually ablate the plug or socket, and It will cause harm to the electrical equipment, and may burn the human body, etc., especially if the force is uneven when inserting, it is easy to produce a state of intermittent on and off, and the electrical equipment cannot withstand multiple impacts of ...

AI Technical Summary

Problems solved by technology

[0002] When the traditional plug is inserted into the socket, because the current is directly loaded on the electrical components of the electrical equipment, and because the electrical components have a short time from no-load to full voltage and a large voltage, there is a very small gap between the plug and the socket. When there is a gap, the air will be ionized, and sparks will be generated instantly. When the power of the electrical equipment is relatively large, a large spark will be generated at the moment of plugging in and a large amount of heat will be generated, which will gradually ablate the plug or socket, and It is harmful to electrical equipment, and may burn the human body, etc., especially if the force is not uniform when inserting, it is easy to produce a state of intermittent on and off, and the electrical equipment cannot withstand multiple impacts of such a large current, causing the electrical equipment to burn

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