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Welding method of sealed battery, sealed battery and cover

A welding method and battery technology, which can be applied to small-sized cells/battery packs, battery covers/end covers, welding equipment, etc., and can solve problems such as easy cracking

Active Publication Date: 2015-11-18
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, when intermittent welding is performed, laser radiation and non-radiation are repeated, at the end of welding, the part where the laser is applied is cooled rapidly, and thus there is a problem that cracks may easily occur

Method used

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  • Welding method of sealed battery, sealed battery and cover
  • Welding method of sealed battery, sealed battery and cover
  • Welding method of sealed battery, sealed battery and cover

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 is a perspective view showing the integration of the cover body 50 into the sealed secondary battery according to one embodiment. image 3 It is an explanatory diagram showing a terminal welding method for forming the cover body 50 . Figure 4 is an explanatory diagram showing the incident angle of the welding locus to the boundary line P and the crack length derived from the welding amplitude obtained from the experimental results.

[0018] The sealed type secondary battery is provided with a case having an opening portion on its upper portion and configured to enclose an electrolytic solution and a pair of electrodes therein; a cover body 50 configured to cover the case and a pair of terminals 60 and 61 connected to the pair of electrodes.

[0019] Such as figure 2 As shown, the cover body 50 is provided with a cover body 51 and terminals 60 , 61 made of an aluminum alloy material different from the material of the cover body 51 in terms of thermal diffus...

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Abstract

A welding method of a sealed storage battery provided with a case configured to encapsulate electrodes and electrolyte therein; a cover configured to cover the case; and two terminals inserted into into a hole provided in the cover body, connected to a pair of electrodes, and formed of a material of a composition different from the lead material, the soldering method comprising: squeezing and extending each of the two terminals along the cover body the distal end side of the terminal, and along the boundary line between the peripheral edge of the distal end side of the terminal and the cover body and alternately and repeatedly pass through the position on the terminal side of the boundary line regarded as the reference line and the cover body side of the boundary line continuous welding at the position on the

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from previous Japanese Patent Application No. 2012-179292 filed on Aug. 13, 2012, the entire contents of which are hereby incorporated by reference. technical field [0003] Embodiments of the present invention relate to a welding method of a sealed secondary battery having parts welded together of different kinds of metallic materials, and a sealed secondary battery and a cover formed using the welding method. Background technique [0004] A sealed type secondary battery is provided with a case configured to enclose electrodes and an electrolytic solution therein; a cover configured to cover the case; terminals and lead wires provided on the cover. [0005] After the terminals are inserted into holes provided in the cover, the terminals are pressed from the back side of the cover by means of a press. At this time, there is an insulator between the terminal and the cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04H01M2/04H01M2/30H01M50/15H01M50/159H01M50/176H01M50/55H01M50/553H01M50/562H01M50/566
CPCB23K2103/08B23K26/28B23K26/32H01M10/04H01M50/553H01M50/15H01M50/55H01M50/176H01M50/566H01M50/562H01M50/159Y10T29/49108Y02E60/10Y02P70/50
Inventor 坂井哲男
Owner KK TOSHIBA
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