Battery anode/cathode cover board production method and battery anode/cathode cover board

A production method and negative electrode cover technology, which is applied in the production field of rotary friction welding products, can solve the problems such as the overall structure of the positive/negative electrode cover plate of the battery is not firm, and achieve the effect of increasing the service life and improving the connection strength

Active Publication Date: 2015-07-22
SICHUAN ANQINGFU ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the technical problem that the overall structure of the battery positive / negative electrode cover plate is not firm in the prior art, thereby proposing a production method that can make the battery positive / negative electrode cover plate structure firm

Method used

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  • Battery anode/cathode cover board production method and battery anode/cathode cover board
  • Battery anode/cathode cover board production method and battery anode/cathode cover board
  • Battery anode/cathode cover board production method and battery anode/cathode cover board

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Embodiment 1

[0033] In this embodiment, a production method of a battery positive / negative cover plate comprises the following steps:

[0034] S1: Use plate-shaped aluminum parts, and process through holes in the aluminum parts, the aluminum parts are 1060 aluminum;

[0035] S2: An insulating ring is clamped in the through hole, the insulating ring has a mounting hole, the upper surface of the insulating ring is attached to the upper surface of the aluminum part, and the lower surface of the insulating ring is attached to the lower surface of the aluminum part; insulation The ring is made of PTFE;

[0036] S3: Two copper parts are used, the copper part has a cylindrical boss 0.5mm larger than the inner diameter of the mounting hole and a cylindrical base 342 with a diameter larger than the diameter of the cylindrical boss 341, the cylindrical boss 341 and the cylindrical base 342 is set coaxially, the surface roughness of the top surface of the cylindrical boss 341 is Ra1.6, and the coppe...

Embodiment 2

[0041] In this embodiment, a production method of a battery positive / negative cover plate comprises the following steps:

[0042] S1: Use plate-shaped aluminum parts, and process through holes in the aluminum parts, the aluminum parts are 3003 aluminum;

[0043]S2: An insulating ring is clamped in the through hole, the insulating ring has a mounting hole, the upper surface of the insulating ring is attached to the upper surface of the aluminum part, and the lower surface of the insulating ring is attached to the lower surface of the aluminum part; insulation The ring is made of PTFE;

[0044] S3: Two copper parts are used. The copper part has a cylindrical boss 341 with a diameter larger than the diameter of the mounting hole 341 and a cylindrical base 342 with a diameter larger than the diameter of the cylindrical boss 341. The cylindrical boss 341 and the cylindrical The base 342 is coaxially arranged, the surface roughness of the top surface of the cylindrical boss 341 is ...

Embodiment 3

[0049] In this embodiment, a production method of a battery positive / negative cover plate comprises the following steps:

[0050] S1: Use plate-shaped aluminum parts, and process through holes in the aluminum parts, the aluminum parts are 3003 aluminum;

[0051] S2: An insulating ring is clamped in the through hole, the insulating ring has a mounting hole, the upper surface of the insulating ring is attached to the upper surface of the aluminum part, and the lower surface of the insulating ring is attached to the lower surface of the aluminum part; insulation The ring is made of PTFE;

[0052] S3: two copper parts are used, the copper part has a cylindrical boss 341 with a diameter larger than the inner diameter of the mounting hole 341 and a cylindrical base 342 with a diameter larger than the diameter of the cylindrical boss 341, the cylindrical boss 341 and the cylindrical base 342 is set coaxially, the surface roughness of the top surface of the cylindrical boss 341 is Ra...

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Abstract

The invention relates to a battery anode / cathode cover board production method. A copper work piece is fixed in a mounting hole of an insulating ring through copper-copper friction welding; enough temperature is generated during welding by reasonably selecting and arranging technological parameters; the metal on the welding surfaces of the two copper work pieces is subjected to plastic deformation, and such defects as bubbles and cracks are not generated at the welding seam part; meanwhile, the welding surfaces of the two copper work pieces are subjected to rotating friction under the action of pressure, so that the two copper work pieces are subjected to deformation in the axial direction, the radial size of the welding surfaces and the area near the welding surfaces is expanded and enlarged, the outer walls of the two copper work pieces are clung to the insulating ring, the insulating ring and an aluminum work piece are fit together tightly, the bonding strength among the components of the battery anode / cathode cover board is improved, and the service life is prolonged; besides, the cross section of the copper work piece is I-shaped, and the two ends of the copper work piece are both larger than the diameter of the mounting hole, so that the copper work piece can be prevented form being squeezed out from one side in the axial direction of the mounting hole.

Description

technical field [0001] The invention relates to a production method of a positive / negative electrode cover plate of a battery and the positive / negative electrode cover plate of a battery, belonging to the production field of rotary friction welding products. Background technique [0002] Large-capacity lithium batteries usually have a cylindrical metal case, and a positive electrode cover plate and a negative electrode cover plate are respectively provided on the two bottom surfaces of the cylindrical shape. At present, the structure of the existing positive / negative cover plate is as follows figure 1 As shown, it includes a round aluminum part 1 with a through hole in the middle, an insulating ring 2 is clamped in the through hole, the upper surface of the insulating ring 2 is attached to the upper surface of the round aluminum part 1, and the lower surface of the insulating ring 2 Fit the lower surface of the round aluminum part 1, the copper part 3 with the big end 31 an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M50/152
CPCH01M10/052H01M50/152Y02E60/10
Inventor 尹英雄蔡荣凯
Owner SICHUAN ANQINGFU ELECTRONICS TECH CO LTD
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