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Battery and method for producing same

A manufacturing method and battery technology, which can be applied to batteries, manufacturing tools, secondary batteries, etc., can solve problems such as easy deviation of cover position

Active Publication Date: 2015-09-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the electrode terminal is riveted to such a shaped cover, when the cover is deformed by the riveting process, the position of the cover inside the case tends to deviate.

Method used

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  • Battery and method for producing same
  • Battery and method for producing same
  • Battery and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0060] figure 1 It is an exploded perspective view of a sealed prismatic non-aqueous electrolyte secondary battery. This battery has a container 1; an electrode group 2 accommodated in the container 1; a non-aqueous electrolytic solution (not shown) accommodated in the container 1; a cover 5 for closing the opening of the container 1; and a positive terminal 6 attached to the cover 5 And the negative terminal 7; the safety valve 21 assembled on the cover 5.

[0061] The container 1 is an outer shell having a bottomed square cylinder shape. The container 1 may be formed of metal such as aluminum, aluminum alloy, iron, or stainless steel, for example.

[0062] The electrode group 2 has a flat shape and includes a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode. The electrode group 2 is manufactured, for example, by winding a laminated body with a separator interposed between the positive electrode a...

Embodiment approach 2

[0099] Next, refer to image 3 A nonaqueous electrolyte secondary battery according to Embodiment 2 will be described. image 3 components shown, for the above figure 1 and 2 The same members that have been described are given the same symbols, and descriptions thereof are omitted. image 3 The perspective view of the positive and negative leads 3 and 4 used in the battery is shown in Figure 4 .

[0100] The positive and negative electrode leads 3 ( 4 ) have a cap joint portion 3 a ( 4 a ), a collector tab joint portion 3 b ( 4 b ), and a vibration absorbing portion 3 c ( 4 c ). The vibration absorbing portion 3c ( 4c ) has a substantially quadrangular shape and is disposed along the side surface in the short side direction of the container 1 . The cover joint portion 3a ( 4a ) has a rectangular shape and extends vertically from the vibration absorbing portion 3c ( 4c ). The cover engaging portion 3a (4a) passes along the first side 23( Figure 4 In the upper side) to...

Embodiment approach 3

[0115] Next, refer to image 3 and 9 A nonaqueous electrolyte secondary battery according to Embodiment 3 will be described. Figure 9 components shown, for the above Figure 4 The same members that have been described are given the same symbols, and descriptions thereof are omitted.

[0116] like Figure 9 As shown, the positive and negative electrode leads 3 (4) used in the non-aqueous electrolyte battery of Embodiment 3 have the same shape as the positive and negative electrode leads 3 (4) of Embodiment 2, and also have a second edge 24 connected to the second side. 2 Vibration absorbing part 3d (4d). The second vibration absorbing portion 3d ( 4d ) is provided between the junction of the collector tab joint portion 3b ( 4b ) and the positive and negative electrode collector tabs 8 , 9 or intermediate leads and the vibration absorbing portion 3c ( 4c ). In other words, the second vibration absorbing portion 3d ( 4d ) is not provided at the joint between the tab junctio...

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Abstract

According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid (5) and a lead (3, 4). The lead (3, 4) has a current collector tab junctional part (3b, 4b) connected with the current collector tabs, a lid junctional part (3a, 4a) fixed to the lid (5), and a vibration absorber part (3c, 4c) linking the current collector tab junctional part (3b, 4b) to the lid junctional part (3a, 4a).

Description

[0001] The patent application for this invention is an application for an invention patent with the international application number PCT / JP2011 / 053244, the international application date is February 16, 2011, the application number entering the Chinese national phase is 201180009874.8, and the name is "battery and its manufacturing method". Divisional application. technical field [0002] The present invention relates to batteries and methods for their manufacture. Background technique [0003] In recent years, with the development of electronic equipment, lithium secondary batteries have become increasingly mature as non-aqueous electrolyte secondary batteries that are small in size, light in weight, high in energy density, and can be repeatedly charged and discharged. In addition, recently, the development of a non-aqueous electrolyte secondary battery capable of rapid charging and high-power discharge suitable as an on-vehicle secondary battery mounted on a hybrid vehicle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/12H01M2/26H01M50/103H01M50/147H01M50/528H01M50/534H01M50/536H01M50/538
CPCH01M2/26B23K26/20Y10T29/4911H01M2/024H01M2/12B23K26/00H01M2/0426H01M2/22H01M2220/20H01M10/0525H01M50/147H01M50/30H01M50/103H01M50/536H01M50/538H01M50/534Y02E60/10H01M50/169Y02P70/50H01M50/533H01M50/543H01M50/528
Inventor 志水俊文仓田健刚丰田夏树柏崎永记
Owner KK TOSHIBA