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Lead component

A technology of lead parts and copper plates, applied in battery pack parts, structural parts, electrical components, etc., can solve the problem of undisclosed surface hardness of steel plates, and achieve the effect of improving welding strength

Active Publication Date: 2014-12-24
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is preferable that the harder the surface of the copper plate is, the higher the welding strength will be. However, Patent Document 1 does not disclose anything about the surface hardness of the above-mentioned steel plate.

Method used

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Embodiment Construction

[0022] Next, preferred embodiments of the lead member of the present invention will be described with reference to the drawings.

[0023] figure 1 is a diagram showing an example of a lead member according to the present invention. In the drawing, reference numeral 1 denotes a lead member, reference numeral 2 denotes a conductor, reference numeral 3 denotes an insulating resin film, reference numeral 4 denotes a package case, and reference numeral 5 denotes a multilayer film. This lead member 1 is exemplified as a tab lead used on the negative electrode side of a non-aqueous electrolyte battery. This lead member 1 has a flat conductor 2 on which a nickel coating layer (nickel plating) is formed on a copper plate (copper foil). ,Such as figure 1 As shown in (A) and (B), the insulating resin film 3 is bonded to both surfaces of the conductor 2 and formed.

[0024] The conductors of the non-aqueous electrolyte battery are connecting conductors connected to the positive elect...

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Abstract

The invention provides a lead component which has excellent welding performance (welding strength), etc. without thickening a nickel coating layer. The lead component (1) is provided with a conductor (2) which is provided with a nickel coating layer on a copper plate, and furthermore is formed through adhibiting insulated resin films (3) on two surfaces of the conductor (2). In the lead component (1), the surface roughness Ra of the copper plate is smaller than or equal with 0.03 mu m in a rolling length direction (MD direction), and furthermore is smaller than or equal with 0.05 mu m in a rolling width direction (TD direction). Vickers hardness on the surface of the copper plate is larger than or equal with 60HV, and the thickness of a nickel coating layer is smaller than or equal with 3.0 mu m.

Description

technical field [0001] The invention relates to a lead part used in a non-aqueous electrolyte storage device. Background technique [0002] Along with miniaturization of electronic equipment, miniaturization and weight reduction of batteries required as power sources are sought. In addition, there is also a demand for higher energy density and higher energy efficiency, and expectations for non-aqueous electrolyte batteries such as lithium-ion batteries are increasing as batteries satisfying the above-mentioned requirements. [0003] image 3 It is a perspective view showing a configuration example of a conventional non-aqueous electrolyte battery. image 3 (A) is a view showing a state where the laminated electrode group is detached from the package case, image 3 (B) is a diagram showing a state in which the laminated electrode group is mounted on the package case. The nonaqueous electrolyte battery 101 has a laminated electrode group 102 , a positive electrode lead 103 , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M2/26H01M2/30
CPCH01M10/0525H01M50/172H01M50/543H01M50/557Y02E60/10
Inventor 千叶昭伸上谷博志
Owner SUMITOMO ELECTRIC IND LTD