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DC socket

A socket and current limiter technology, applied in the direction of contact parts, electrical components, coupling devices, etc., can solve the problems of prolonging the time for switching electrical appliances to break the faulty circuit, fire and explosion, and no periodicity of direct current, so as to eliminate arcs, reduce The effect of the arc

Active Publication Date: 2019-08-06
BEIJING ETECHWIN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a periodicity in alternating current, and both voltage and current have zero-crossing points. Although the plug also generates an arc when it is inserted and pulled out of the socket, because of the characteristic of zero-crossing point, the arc will extinguish itself after a short period of time; but the direct current is different. , DC has no periodicity, it will not extinguish itself after the arc is generated, and it needs external conditions to extinguish the arc
The existence of the arc prolongs the time for the switching device to break the fault circuit, which makes the power system have the hidden danger of short circuit fault
Moreover, high temperatures will be generated on the surface of the arc, which will cause electric corrosion on the reeds and plugs of the electrical socket, greatly shortening the service life of the socket and the plug; the arc in the oil-filled electrical equipment may also cause the danger of fire and explosion

Method used

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Embodiment Construction

[0044] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.

[0045] The orientation w...

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Abstract

The embodiment of the invention provides a DC socket comprising: a housing having a receiving slot and an opening communicating with the receiving slot, wherein the movable contact of the DC socket can be inserted into the receiving slot; a fixed contact distributed in the receiving slot; and an electrode distributed in receiving slot, electrically connected to the fixed contact and located on a side of the fixed contact away from the opening, so that the movable contact can be successively connected to the fixed contact and the electrode when entering the receiving slot from the opening; a current limiter electrically connected between the fixed contact and the electrode. The DC socket is capable of eliminating the arc generated when a plug is inserted into or removed from the DC socket.

Description

technical field [0001] The invention relates to the technical field of DC circuit power devices, in particular to a DC socket. Background technique [0002] With the extensive application of photovoltaic power generation and new energy vehicles, there are more and more applications of DC sockets and plugs. There is a big difference between DC characteristics and AC characteristics. There is a periodicity in alternating current, and both voltage and current have zero-crossing points. Although the plug also generates an arc when it is inserted and pulled out of the socket, because of the characteristic of zero-crossing point, the arc will extinguish itself after a short period of time; but the direct current is different. , DC has no periodicity, and it will not extinguish itself after the arc is generated. It needs external conditions to extinguish the arc. The existence of arc prolongs the time for the switching device to break the fault circuit, which makes the power syst...

Claims

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Application Information

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IPC IPC(8): H01R13/10H01R13/66
CPCH01R13/10H01R13/66
Inventor 张广洁
Owner BEIJING ETECHWIN ELECTRIC