Pouch-type lithium secondary battery and fabrication method thereof

a lithium secondary battery, puff-type technology, applied in the direction of cell components, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of several conventional lithium secondary batteries, and achieve the effect of improving connection structure and minimizing sealing surface of cases

Inactive Publication Date: 2006-03-09
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018] The present invention provides a pouch-type lithium secondary battery having a minimized sealing surface of a case by providing an improved connection structure in wh

Problems solved by technology

However, the conventional lithium secondary battery 10 has several problems.
This has introduced a critical problem of d

Method used

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  • Pouch-type lithium secondary battery and fabrication method thereof
  • Pouch-type lithium secondary battery and fabrication method thereof
  • Pouch-type lithium secondary battery and fabrication method thereof

Examples

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Embodiment Construction

[0033] Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below to explain the present invention by referring to the figures.

[0034] As noted above, the lithium secondary batteries may be classified into liquid electrolyte batteries and solid electrolyte batteries, according to the electrolyte used. In general, batteries using a liquid electrolyte are referred to as lithium-ion batteries, and batteries using a polymeric electrolyte are referred to as lithium polymer batteries.

[0035]FIG. 3 shows a pouch-type lithium secondary battery 30 according to an embodiment of the present invention.

[0036] Referring to FIG. 3, the lithium secondary battery 30 includes a battery unit 31 and a case 32 accommodating the battery unit 31.

[0037] The battery unit 31 includes a positive electrode plate 33, a...

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Abstract

A pouch-type lithium secondary battery including a battery unit having a positive electrode plate, a negative electrode plate, and a separator between the positive and negative electrode plates; electrode tabs extending from each of the positive and negative electrode plates of the battery unit, respectively; a case having a space to accommodate the battery unit; a sealing surface along the periphery of the space; and a protection circuit board electrically connected to the electrode tabs, wherein portions of each of the electrode tabs extend outside the case, and are bent in an upright position with respect to a plane of the sealing surface.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. application Ser. No. 10 / 791,269 filed Mar. 3, 2004, now pending, and claims the benefit of Korean Patent Application No. 2003-32554, filed on May 22, 2003 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a lithium secondary battery, and, more particularly, to an improved structure of connection between an electrode tab and a protection circuit board electrically connected thereto, and a pouch-type lithium secondary battery having the improved connection structure and a fabrication method thereof. [0004] 2. Description of the Related Art [0005] With the development of portable electronic devices such as cellular phones, notebook-type computers, camcorders, and the like, increased research into secondary batteries generally capable of chargi...

Claims

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Application Information

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IPC IPC(8): H01M2/08H01M2/26H01M2/06H01M10/04H01M10/05H01M10/0525H01M10/058H01M50/119H01M50/121H01M50/129H01M50/178H01M50/55H01M50/553
CPCH01M2/021H01M2/0275H01M2/30H01M2/342Y10T29/49108H01M10/0525H01M10/058Y02E60/122Y10T29/4911H01M10/0436Y02E60/10H01M50/597Y02P70/50H01M50/129H01M50/119H01M50/55H01M50/178H01M50/553H01M50/121H01M10/0585
Inventor CHUNG, HYUN-JEILEE, HYUNG-BOK
Owner SAMSUNG SDI CO LTD
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