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Rechargeable battery

A recharging and battery technology, applied in the field of small rechargeable batteries, can solve the problems of poor workability, low height, and reduced battery capacity, and achieve the effect of reducing thickness, increasing capacity, and promoting connection

Pending Publication Date: 2022-01-21
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of coin batteries or button batteries, since the overall height is low, if the thickness of the part where the electrode terminals are installed increases, the battery capacity may decrease
In addition, since the ends of the bent lead tabs are adjacent to both ends of the wound electrode assembly, and the height of the wound electrode assembly is smaller than the diameter, the workability for welding the ends of the lead tabs and the electrode terminals is reduced. become worse

Method used

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Examples

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Embodiment Construction

[0035] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the scope of the present invention. The drawings and descriptions are to be regarded as illustrative in nature and not restrictive. Throughout the specification, the same reference numerals refer to the same elements.

[0036] A rechargeable battery according to an embodiment of the present invention is an ultra-compact battery, which may be a coin cell or a button cell. Here, the coin battery or button battery is a thin coin or button battery, and means a battery in which the ratio (H / D) of height (H) to diameter (D) is 1 or less.

[0037] Since a coin battery or a button battery is mainly cylindrical, the horizontal cross section is circular, but the present invention is not ...

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Abstract

One aspect of the present invention provides a rechargeable battery which increases capacity by reducing a thickness by which an electrode terminal is installed, and facilitates the connection of a lead tab to the electrode terminal. A rechargeable battery, according to one embodiment of the present invention, comprises: an electrode assembly formed by disposing and winding a separator between a first electrode and a second electrode; a case which faces one end from among two wound ends of the electrode assembly so as to accommodate the electrode assembly; a cap plate which faces the other end of the two wound ends so as to seal an opening of the case; an electrode terminal which is installed in a terminal hole formed in the cap plate while having an insulation sealing material interposed therebetween; a first lead tab for connecting the first electrode to the electrode terminal; and a second lead tab for connecting the second electrode to the case.

Description

technical field [0001] The present invention relates to a rechargeable battery. More specifically, the present invention relates to a small rechargeable battery. Background technique [0002] Unlike primary batteries, which cannot be recharged, rechargeable batteries can be charged and discharged repeatedly. Low-capacity rechargeable batteries have been used for small electronic devices such as mobile phones, laptop computers, and camcorders, while large-capacity batteries have been widely used as power sources for driving motors of hybrid vehicles. [0003] Representative rechargeable batteries include nickel-cadmium (Ni-Cd) batteries, nickel-metal hydride (Ni-MH) batteries, lithium (Li) batteries, and lithium-ion (Li-ion) rechargeable batteries. In particular, lithium-ion secondary batteries have an operating voltage about three times higher than that of nickel-cadmium batteries or nickel-hydrogen batteries that are mainly used as power sources for portable electric equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/109H01M50/153H01M50/181H01M50/188H01M50/545H01M50/559
CPCH01M50/109H01M50/153H01M50/181H01M50/188H01M50/545H01M50/559H01M50/191H01M50/202H01M50/528H01M50/566H01M50/562H01M50/159H01M10/0431H01M10/0427H01M2220/30Y02E60/10H01M50/172H01M50/183H01M50/538Y02P70/50H01M50/46H01M10/049
Inventor 李钟夏金由美田炳玟
Owner SAMSUNG SDI CO LTD
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