End surface welding current collector of lithium battery

A technology of end face welding and current collector, which is applied to the component structure of lithium batteries and the field of lithium battery end face welding current collectors. It can solve the problems that alkaline battery end face welding current collectors cannot be used, and achieve simple manufacturing process, reduce ohmic resistance and current collection effect. Good results

Inactive Publication Date: 2014-04-16
周培荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The very thin copper foil and aluminum foil used in the positive and negative frame of the lithium battery, respectively, cannot be used to weld the current collector on the end face of the alkaline battery.

Method used

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  • End surface welding current collector of lithium battery
  • End surface welding current collector of lithium battery

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Embodiment Construction

[0014] In the following, the current collector for lithium battery end face welding according to the present invention will be further described in detail in combination with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, the present invention is a lithium battery end face welding collector, including a guide plate 5, a central hole 3 is opened on the guide plate 5, and four welding grooves 2 are radially provided on the surface of the guide plate 5, so that The welding groove 2 divides the surface of the guide plate 5 into four quadrants, one of which is provided with a conductive ear 1, and the conductive ear 1 is integrally connected with the guide plate 5, and the remaining three quadrants are provided with Liquid guide hole 4.

[0016] The liquid guide hole 4 is in the shape of an isosceles right triangle, and the fixed point of the right angle of the triangle points to the center of the guide plate 5 .

[0017] The conductive ea...

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PUM

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Abstract

The invention belongs to the technical field of electric power storage equipment, and discloses a component structure of a lithium battery, in particular to an end surface welding current collector of a lithium battery. The current collector comprises a current conduction disc, wherein a center hole is formed in the current conduction disc; more than three welding grooves distributed at equal intervals are radially formed in the surface of the current conduction disc and equally divide the surface of the current conduction disc into more than three quadrants; a conductive pole tab is arranged in one quadrant and integrally connected with the current conduction disc; and liquid guide holes are formed in the rest quadrants. The end surface welding current collector has the advantages that the brand-new end surface welding current collector of the lithium battery is simple in manufacturing technology, has a good current collecting effect during use, greatly reduces ohmic resistance of the battery, greatly improves performances of the lithium battery, and contributes to automatic production of assembly of the high-power and ultrahigh-volume cylindrical lithium power battery at the same time.

Description

[0001] technical field [0002] The invention relates to a component structure of a lithium battery, in particular to a lithium battery end face welding current collector, which belongs to the technical field of storage equipment. Background technique [0003] With the development of economy and society, batteries, especially lithium batteries, are developing at a high speed. Due to its high specific energy, long life, and environmental protection, lithium batteries have attracted more and more attention. Lithium batteries will have broad application prospects in electric vehicle power supplies and energy storage power supplies. People in the industry generally believe that low-capacity batteries are produced by cylindrical technology, and high-capacity batteries are produced by square lamination technology. In fact, the key issue is still the problem of flow collection. Because the positive and negative pole frames of the lithium battery are made of very thin copper foil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M50/536
CPCH01M50/531Y02E60/10
Inventor 周培荣
Owner 周培荣
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