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Lead member and boding method thereof and nonaqueous electrolyte electricity storing device

A technology of lead components and components, applied in hybrid capacitor electrolytes, electrolytic capacitors, hybrid capacitor electrodes, etc., can solve the problems of large-scale equipment, complicated operation, poor manufacturing performance, etc.

Inactive Publication Date: 2008-04-30
SUMITOMO ELECTRIC IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when using laser welding that locally melts metal by irradiating laser light, a brittle alloy layer is formed at the joint edge
Therefore, there is a concern that the mechanical strength against tension or vibration at the joined portion is low, and the electrical properties are degraded
Also, according to ultrasonic welding etc., energy consumption is large, its equipment scale is large, and its operation is complicated, so the manufacturing performance is poor

Method used

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  • Lead member and boding method thereof and nonaqueous electrolyte electricity storing device
  • Lead member and boding method thereof and nonaqueous electrolyte electricity storing device
  • Lead member and boding method thereof and nonaqueous electrolyte electricity storing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0164] As an example of pressure bonding, an aluminum plate of 0.2 mm x 50 mm x 60 mm and a nickel-plated copper plate having the same dimensions were prepared. The aluminum plate and the nickel-plated copper plate are partially overlapped, and the overlapped portion is subjected to cold pressure welding. A mold consisting of a mold with a protruding part and a flat mold is used for pressure welding. In molds, there are three types of patterns for molds with protrusions. The first type of pattern is a straight die. This die is a die for pressing the overlapping portion into a linear shape in the width direction. The second die is a lengthwise tooth die. The die is constituted by a shape in which a plurality of elliptical protruding portions are arranged, and the respective protruding portions are arranged such that the longitudinal direction thereof coincides with the longitudinal direction of the lead member. The third mold is a helical tooth mold. The die is constituted...

Embodiment 2

[0193] Next, the shape of the helical tooth mold used in Example 1 was changed, and cold welding and planarization similar to Example 1 were performed by this mold. The mold used in this example is a boat mold in which both ends of the protrusion are formed into a convergent shape. This die is similar to the helical tooth die in other descriptions except that both end portions of the protrusion are formed into a convergent shape.

[0194] When cold welding is performed by using this boat-shaped die, the cold press welding mark is in a mode of transcribing the shape of the protruding part of the die, similar to the helical tooth die. However, after the planarization, it can be seen that the opening width of the cold-welding trace decreases not only at the middle portion in the longitudinal direction of the cold-welding trace, but also substantially over its entire length. Therefore, it seems that in the case of using a boat-shaped mold instead of a helical tooth mold, the area...

Embodiment 3

[0196] Next, lead members of the present invention by cold welding and lead members for comparison by ultrasonic welding were manufactured, and their tensile properties and electrical properties were observed.

[0197] Also in this case, a nickel-plated copper plate and an aluminum plate similar to Example 1 were prepared, and their overlapping portions were subjected to cold welding or ultrasonic welding. The die used in the cold welding was the same die as the helical die in Example 1. On the other hand, ultrasonic welding was performed by constituting a joint area of ​​12 mm x 3 mm x 2 parts. Also cold welded samples were flattened by a pair of planar dies. Also, the planarization conditions are similar to the working conditions of Example 1.

[0198] The tensile properties were measured by holding both ends of the provided lead member with a tensile tester, and the joint strength was constituted from the tension at the time point when the nickel-plated copper plate and t...

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Abstract

A first member 11 and a second member 12 connected to each other are provided. The first member 11 is electrically connected to an electrode. The second member 12 is bonded to a position of the first member 11 remote from the electrode and is constituted by a material of a kind different from that of the first member 11 . An overlapped portion 13 is formed at the first member 11 and the second member 12 and the overlapped portion 13 is bonded by cold welding. By the cold welding, the overlapped portion 13 is formed with a plurality of pressure marks 14 in a recess shape. Each cold pressure welded mark 14 is formed with a deformation mark reducing a depth of the cold pressure welded mark of the recess shape before plastic working by plastically working the overlapped portion 13 in a thickness direction thereof.

Description

technical field [0001] The present invention relates to a lead member, a bonding method thereof, and a nonaqueous electrolyte electric storage device. In particular, the present invention relates to a lead member excellent in mechanical strength and electrical properties, a bonding method thereof, and a nonaqueous electrolyte electric storage device. Background technique [0002] In recent years, the use of nonaqueous electrolyte batteries (for example, lithium ion batteries, etc.) has gradually increased. It is characterized by a high energy output per unit volume or unit weight compared to other batteries. The development of non-aqueous electrolyte batteries has been promoted as a power source for automotive communication equipment, notebook personal computers, and electric vehicles or hybrid vehicles. In particular, a small-sized form, a light-weight form of a battery as a power source has been demanded, and attention has been directed to a nonaqueous electrolyte batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M2/22H01M2/30H01M10/40H01M10/38H01G9/008H01G9/155H01G11/08H01G11/22H01G11/34H01G11/40H01G11/42H01G11/58H01G11/66H01G11/68H01G11/74H01G11/82H01G11/84H01M50/516H01M50/528H01M50/548H01M50/557H01M50/562H01M50/571
CPCH01M2/0212H01M10/0585H01M2/26Y02E60/12H01M2/202H01M2/22Y02E60/10H01M50/557H01M50/528Y02P70/50H01M50/562H01M50/516H01M50/548
Inventor 新居弘章田中浩介花房幸司
Owner SUMITOMO ELECTRIC IND LTD
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