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A kind of direct current short-circuit proof electrical connecting piece

An electrical connection piece, short-circuit proof technology, applied in circuits, electrical components, emergency protection devices, etc., can solve the problems of temperature rise, isolation, and large volume in small areas, and achieve the effect of reducing contact resistance and reducing connection heat.

Inactive Publication Date: 2019-01-08
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it cannot take into account the over-current capability and anti-short circuit protection function
[0003] At present, the fuse connection device mainly reduces the conductive cross-sectional area of ​​the fuse section, so that the temperature of the small-area section rises and fuses when the short circuit occurs. Explosion-proof measures are required, and the volume is large

Method used

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  • A kind of direct current short-circuit proof electrical connecting piece
  • A kind of direct current short-circuit proof electrical connecting piece

Examples

Experimental program
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Effect test

Embodiment 1

[0028] This embodiment includes two metal sheets A with the same thickness, such as Figure 1-Figure 2 The shape shown forms an arch at the junction, and through thickening or multi-layering, the thickness gradually increases from the arch section to the junction until it is the same thickness as the metal sheet B, and there is a piece of metal sheet B in the middle, whose thickness is the same as that of the metal sheet B The joints of sheet A are the same, and its equivalent rated overcurrent capacity is the same as that of the straight part of metal sheet A. The melting temperature is much lower than that of metal sheet A. The three metal sheets are connected together by electroplating or welding, and then the surface is electroplated with nickel. Or use it as an integrated electrical connection piece after tin treatment.

[0029] Cross-sectional area ratio calculation formula: ImA×SA=ImB×SB

[0030] Among them, ImA is the rated ampacity of metal A, ImB is the rated ampacit...

Embodiment 2

[0035] This embodiment provides a DC short-circuit proof electrical connector, in which multiple overcurrent units in the circuit are connected in series, and the connectors are used to connect each unit.

[0036] The two ends of the connection piece are copper nickel-plated metal pieces, which can effectively reduce the contact resistance of the contact surface and reduce the connection heat.

[0037] The rated overcurrent capability of the two metals is the same, ensuring the overall rated overcurrent capability.

[0038] When a circuit short circuit occurs, the intermediate metal (such as nickel, tin, aluminum, etc.) has a lower melting temperature than the connecting metal (such as copper or copper alloy) and the metal sheet will automatically fuse to protect the circuit.

[0039] Explosion-proof treatment is not required when the connecting piece is fused.

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Abstract

The invention belongs to the technical field of direct-current series circuits, and particularly relates to a direct-current short-circuit prevention electric connection sheet. Compared with the prior art, the direct-current short-circuit prevention electric connection sheet has the advantages that 1, two heads of the connection sheet are metal sheets with high conductivity, the contact resistance of a contact surface is effectively reduced, and the connection heating can be reduced; 2, two metals have the same rated overcurrent capability, the overall rated overcurrent capability is ensured, and an electric-conduction calorific value is reduced; 3, when a short circuit occurs, the fusing temperature of the metal sheet B is smaller than that of the metal sheet A so that the metal sheet B can automatically fuse, and the circuit protection function is achieved; 4, anti-explosion treatment is not needed during fusing; 5, a secondary short circuit is avoided.

Description

technical field [0001] The invention belongs to the technical field of DC series circuits, and in particular relates to a DC short-circuit proof electrical connection piece. Background technique [0002] At present, the connecting pieces between the current units of the DC series circuit are single metal or alloy (such as copper, nickel, aluminum and their alloys) as the substrate, and are used as electrical connection directly or after surface treatment. Its disadvantage is that it cannot take into account both the over-current capability and the anti-short circuit protection function. [0003] At present, the fuse connection device mainly reduces the conductive cross-sectional area of ​​the fuse section, so that the temperature of the small-area section rises and fuses when the short circuit occurs. Explosion-proof measures are required, and the volume is large. Contents of the invention [0004] (1) Technical problems to be solved [0005] The technical problem to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H85/06H01H85/143
CPCH01H85/06H01H85/143
Inventor 徐少禹陈芬徐春常陈潇张秋淼靳聪
Owner CHINA NORTH VEHICLE RES INST
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