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Electrode package and secondary battery using the same

A technology for secondary batteries and electrodes, which is applied in the field of assembly structures of current collectors and electrodes, and can solve problems such as low production efficiency and increased number of preparation steps

Inactive Publication Date: 2005-10-19
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the secondary battery with such a structure also needs to fix many wires to the positive electrode and the negative electrode, there is a problem that the number of manufacturing steps increases, and thus the manufacturing efficiency is low.

Method used

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  • Electrode package and secondary battery using the same
  • Electrode package and secondary battery using the same
  • Electrode package and secondary battery using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0051] The positive electrode current collecting plate 10 and the negative electrode current collecting plate 12 of the present invention have covering portions 10b and 12b that completely cover the corresponding uncoated regions 2a and 6a, and lead wires that extend from the covering portions 10b and 12b and are connected to the terminals 18 and 20. Parts 10a and 12a. Of course, the above structure is only used as an embodiment of the present invention, and the present invention is not limited to the above structure.

[0052] Such as Figure 4 As shown, lead portions 10a and 12a may be integrally formed with cover portions 10b and 12b. or, as in Figure 8 As shown, the lead portions 10a and 12a may also be formed separately from the covering portions 10b and 12b, and then the leads may be fixed thereto.

[0053] The current collecting plates 10 and 12 of the present embodiment may be fixed on the corresponding uncoated regions 12 a and 6 a by laser welding, and thus, a las...

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Abstract

The invention provides an electrode assembly for a secondary battery which improves an output performance by increasing current collection efficiency and can substantially uniformly derive a current generated at each part of a group of electrodes. The electrode assembly comprises a group of electrodes including a positive electrode and a negative electrode each in which a plain portion to which active material is not applied is formed along a fringe, and a separator arranged between the positive electrode and the negative electrode; a current collection plate for a positive electrode which has a part arranged in a region out of the group of electrodes and is electrically connected to the plain portion of the positive electrode while covering a tip of the plain portion of the positive electrode; and a current collection plate for a negative electrode which has a part arranged in a region out of the group of electrodes while covering a tip of the plain portion of the negative electrode.

Description

technical field [0001] The present invention relates to a secondary battery, and more specifically, to an assembly structure of a collector plate and an electrode for an electrode package of a secondary battery. Background technique [0002] Unlike primary batteries, secondary batteries are rechargeable. Common types of secondary batteries can be made into battery packs and used as power sources for various portable electronic devices such as cellular phones, laptop computers, and camcorders. [0003] Recently, a high-energy battery using a secondary battery has been developed as a power source for a hybrid electric vehicle (HEV) motor. [0004] Secondary batteries are classified into different types according to their shapes, for example, square and cylindrical batteries. The structure of the prismatic secondary battery has a strip-shaped positive electrode and a negative electrode with a separator interposed therebetween stacked and wound into a square electrode assembly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/02H01M4/64H01M10/00H01M10/04H01M50/533H01M50/534H01M50/536H01M50/538
CPCH01M10/0587H01M2/263H01M10/0431Y02E60/122H01M4/13Y02E60/10H01M50/538Y02P70/50H01M50/534H01M50/536H01M50/533H01M50/20
Inventor 金容三
Owner SAMSUNG SDI CO LTD