Air forced cooling type direct current, low voltage and high-current switch

A high-current switching, DC low-voltage technology, applied in the field of switching, can solve problems such as deviation and total resistance exceeding 100mΩ, and achieve the effects of reducing heat generation, reducing heat generation, and precise time control

Active Publication Date: 2014-03-05
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause the total resistance in the loop to exceed 100mΩ (UN38.3 test requirements), which deviates from the test standard

Method used

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  • Air forced cooling type direct current, low voltage and high-current switch

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0023] Such as figure 1 As shown, an air-cooled DC low-voltage high-current switch includes a base 1, a cylinder assembly, a piston assembly, an air supply assembly, a contact end assembly, a terminal assembly and a fixing nut 17; the cylinder assembly passes through the fixing nut 17 Fixed on the base 1, the piston assembly is inside the cylinder assembly and protrudes to the left, the contact end assembly is arranged on the top of the piston assembly, the air supply assembly is connected with the cylinder assembly, and the terminal assembly is connected with the contact end assembly;

[0024] During operation, at the moment when the switch is closed, the air supply component sprays compressed air to the contact end assembly through the cylinder assembly and the piston assembly in turn to cool the contact end assembly

[0025] The cylinder assembly includes a cy...

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Abstract

The invention relates to an air forced cooling type direct current, low voltage and high-current switch. The air forced cooling type direct current, low voltage and high-current switch is characterized by comprising a base, a cylinder module, a piston module, an air supply module, a contact end module, a wiring end module and a fixing nut, wherein the cylinder module is fixed on the base through the fixing nut; the piston module is arranged in the cylinder module and extends outward the contact end module; the contact end module is arranged at the top end of the piston module; the air supply module is connected with the cylinder module; and the wiring end module is connected with the contact end module. During working, the air supply module sprays compressed air to the contact end module via the cylinder module and the piston module in sequence so as to cool the contact end module at the moment of turning off the switch. Compared with the prior art, the air forced cooling type direct current, low voltage and high-current switch provided by the invention has the advantages of simplicity and convenience for mounting, accuracy in time control and capability of reducing heating value in the short-circuited experiment of a power battery so as to guarantee the stability of the testing condition, etc.

Description

Technical field [0001] The invention relates to a switch, in particular to an air forced cooling type direct current low voltage high current switch. Background technique [0002] The short-circuit test of power batteries is often accompanied by high-current discharge. Some batteries have a short-circuit current of up to 1000A or even higher. Due to the large current, a large amount of heat is generated in the loop. For a general metal conductor, as the temperature increases, the resistance value becomes larger. This may cause the total resistance in the loop to exceed 100mΩ (UN38.3 test requirements), which deviates from the test standard. Summary of the invention [0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a forced-air-cooled DC low-voltage large-scale air-cooled system that is easy to install, accurate in time control, and can reduce the heat generated during the short-circuit test of power-type bat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/62H01H1/06
Inventor 顾杨幸刘刚张小沁
Owner SHANGHAI RES INST OF CHEM IND
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