Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body

A composite metal and manufacturing method technology, applied to structural parts, electrical components, circuits, etc., can solve the problems of affecting product appearance, low bonding strength, and high process cost, and achieve low process cost, smooth surface, and good reliability.

Inactive Publication Date: 2014-07-16
徐卓辉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a composite metal structure tab and its manufacturing method to solve the above-mentioned problems of the existing tab such as large contact resistance, high process cost, low bonding strength, poor reliability, and affecting the appearance of the product.

Method used

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  • Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body
  • Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body
  • Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Figure 5 It schematically shows a row-type tab with a transfer-free aluminum-based inlaid nickel composite metal structure, which can be used for lithium-ion batteries. Image 6 Its A-A section structure is shown. like Figure 5 and 6 As shown, this row-type tab consists of a plurality of tab monomers 1 arranged side by side in the width direction and at intervals, and is thermally bonded on the aluminum substrate 11 of the plurality of tab monomers 1 near the easy-to-weld layer 12. The tab glue 2 is made by connecting the plurality of tab monomers 1 into a whole. Wherein, the lug monomer 1 is in the shape of a strip, with a size of 0.1 mm (thickness) × 4 mm (width) × 70 mm (length). The tab monomer 1 includes a strip-shaped aluminum substrate 11 and is arranged The easily weldable portion at one end of the aluminum substrate 11 has recesses 13 on both sides of one end of the aluminum substrate 11. The easily weldable portion is an easily weldable la...

Embodiment 2

[0052] Example 2: A row-type tab with an aluminum-based inlaid copper composite metal structure without transfer welding, which can be used for lithium-ion batteries, and its structure is as follows Figure 5 and 6 As shown, a plurality of lug monomers 1 are arranged side by side in the width direction and at intervals, and the tab glue 2 is thermally bonded to the aluminum substrate 11 of the plurality of tab monomers 1 near the easy-to-weld layer 12. The plurality of lug monomers 1 are connected as a whole. Wherein, the lug monomer 1 is in the shape of a strip, with a size of 0.2 mm (thickness) × 5 mm (width) × 60 mm (length). The lug monomer 1 includes a strip-shaped aluminum substrate 11 and is arranged on The easily weldable portion at one end of the aluminum substrate 11 has recesses 13 on both sides of one end of the aluminum substrate 11. The easily weldable portion is an easily weldable layer (copper layer) 12 that is rolled and bonded to the recess 13. The easil...

Embodiment 3

[0058] Example 3: A row-type tab with an aluminum-based inlaid copper composite metal structure without transfer welding, which can be used for lithium-ion batteries, and its structure is as follows Figure 7 and Figure 8 As shown, a plurality of lug monomers 4 are arranged side by side in the width direction and at intervals, and the tab glue 2 is thermally bonded to the aluminum substrate 41 of the plurality of tab monomers 4 near the easy-to-weld layer 42. The plurality of lug monomers 4 are connected as a whole. Wherein, the lug monomer 4 is in the shape of a strip, with a size of 0.2 mm (thickness) × 5 mm (width) × 120 mm (length). The lug monomer 4 includes a strip-shaped aluminum substrate 41 and is arranged on The easy-to-weld portion in the middle of the aluminum substrate 41 has recesses 43 on both sides of the middle of the aluminum substrate 41, and the easy-to-weld portion is an easy-to-weld layer (copper layer) 42 that is rolled and bonded to the recess 43, a...

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Abstract

The invention relates to a pole lug single body with an embedded composite metal structure, a row type pole lug, and a manufacturing method of the pole lug single body. The pole lug single body is in a strip sheet shape, the whole thickness is 0.05-0.3mm, and the pole lug single body comprises a strip-shaped aluminium substrate and an easily-welded part at one end or the middle position of the aluminium substrate, wherein the easily-welded part is an easily-welded layer rolled and combined with a concave part of the aluminium substrate, the side part and the whole bottom part of the easily-welded layer and the concave part of the aluminum substrate form a physical metallurgy layer, and the thickness of the easily-welded layer is 1-95% of the total thickness of the pole lug single body. The row type pole lug is formed by combining a plurality of the pole lug single bodies through pole lug glue. The manufacturing method comprises: inlaying an easily-welded metal belt in a groove on an aluminium belt surface, and rolling; performing continuous bright annealing and rolling on the rolled composite metal belt; shearing to obtain the pole lug single body; and performing surface de-oiling, passivation and drying processing on the pole lug single body. The pole lug is high in combination strength and small in contact resistance. The method is low in cost and easy to realize.

Description

technical field [0001] The invention relates to battery tabs, more specifically, to polymers, liquid soft packaging, and tabs for hard-shell lithium-ion battery cells, and to a manufacturing method thereof. Background technique [0002] At present, most of the positive tabs for polymer, liquid flexible packaging, and hard-shell lithium-ion battery cells use aluminum tabs. As we all know, the tabs need to be welded with the battery management circuit protection board or wires, but aluminum and tin on the protection board or wires A good weld cannot be achieved. In order to solve this problem, most of the existing process schemes use laser welding or ultrasonic welding to transfer a section of nickel sheet to the exposed end of the aluminum tab in an overlapping manner, and then connect the welded nickel sheet to the circuit protection plate or wire Tin on the connection. This transfer welding lap method brings the following four problems: 1. The concave and convex t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M50/533H01M50/534
CPCH01M50/531Y02E60/10
Inventor 徐卓辉沈翠珊
Owner 徐卓辉
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