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Battery cover plate

A battery cover and cover technology, applied in the direction of battery cover/end cover, battery pack components, battery box/jacket, etc., can solve the problems of high maintenance cost and short circuit of welding ring, and achieve low maintenance cost and easy maintenance. Short circuit, good insulation effect

Pending Publication Date: 2020-02-21
浙江锦泰电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problems of high maintenance cost and easy short circuit of the welding ring in the prior art, and provides a battery cover with low maintenance cost and less short circuit of the welding ring

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: The manufacturing process of the positive electrode assembly 3 and the negative electrode assembly 4 is: the positive pole 8 is stamped or machined, the negative pole 11 is stamped or machined—welding ring one 7 and welding ring two 10 are stamped and made— The positive pole 8 is integrated with the injection part 1 9 by injection molding, and the negative pole pole 11 is integrated with the injection part 2 12 through injection molding. 12 on. The outer edge of the welding ring one 7 is fixedly connected with the side wall of the corresponding U-shaped groove 16 on the cover body 1 by laser welding; The side walls of the U-shaped groove 16 are fixedly connected. In this process, only the positive pole 8 and the negative pole 11 are assembled after injection molding alone, the manufacturing process is simple, and there is no short circuit caused by deformation of the welding ring due to excessive pressure during injection.

Embodiment 2

[0041] Embodiment 2: The manufacturing process of the positive electrode assembly 3 and the negative electrode assembly 4 is: the positive pole 8 is punched or machined, the negative pole 11 is punched or machined—welding ring one 7 and welding ring two 10 are stamped and manufactured— Manufacture injection part one 9 and injection part two 12 - assembly of positive pole 8 and assembly of negative pole 11. When the positive electrode assembly 3 is assembled, the positive electrode pole 8 is installed in the injection-molded part-9, the injection-molded part-9 is installed in the welding ring-7, and the outer edge of the welding ring-7 is laser welded with the corresponding U on the cover plate body 1. The side walls of the groove 16 are fixedly connected; when the negative electrode assembly 4 is assembled, the negative electrode pole 11 is installed in the second injection part 12, the second injection part 12 is installed in the second welding ring 10, and the outer edge of t...

Embodiment 3

[0042] Embodiment 3: The manufacturing process of the positive electrode assembly 3 and the negative electrode assembly 4 is: the positive pole 8 is punched or machined, the negative pole 11 is punched or machined—welding ring one 7 and welding ring two 10—welding ring One 7 is nested in injection part one 9 by injection molding, welding ring two 10 is nested in injection part two 12 by injection molding—positive pole 8 is installed in injection part one 9, and negative pole 11 is installed in injection part two within 12. The outer edge of the welding ring one 7 is fixedly connected with the side wall of the corresponding U-shaped groove 16 on the cover body 1 by laser welding; The side walls of the U-shaped groove 16 are fixedly connected. This process adopts the welding ring one 7 and the welding ring two 10 to be assembled after plastic embedding, the manufacturing process is simple, and it is easy to realize fully automatic manufacturing.

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Abstract

The invention discloses a battery cover plate, and aims to provide a battery cover plate which is low in maintenance cost and not prone to short circuit in a welding ring. The battery cover plate comprises a cover plate body, a lower plastic part, a positive electrode assembly and a negative electrode assembly, wherein the cover plate body is provided with a positive electrode hole and a negativeelectrode hole, the positive electrode assembly comprises a welding ring I, a positive electrode pole and an injection molding part I, the injection molding part I coats the outer side surface of thepositive electrode pole, the injection molding part I is fixedly installed on the positive electrode hole through the welding ring I, the negative electrode assembly comprises a welding ring II, a negative electrode pole and a injection molding part II, the injection molding part II coats the outer side surface of the negative electrode pole, the injection molding part II is fixedly installed on the negative electrode hole through the welding ring II, and the lower plastic part is arranged on the lower end surface of the cover plate body. The battery cover plate has the beneficial effects thatthe maintenance cost is low, and the welding ring is not liable to be short-circuited; the insulating property between the pole and the welding ring is good; the manufacturing process is simple, andit is easy to realize full-automatic operation.

Description

technical field [0001] The present invention relates to the technical field of batteries, in particular to a battery cover plate. Background technique [0002] At present, lithium-ion batteries have the advantages of safety, high efficiency, no pollution, high specific energy, abundant raw materials, many cycles of use, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras and laptop computers. , and are also widely used in large and medium-sized electric equipment such as electric vehicles, electric bicycles and power tools, so the safety requirements for lithium-ion batteries are getting higher and higher. [0003] However, the existing lithium-ion power battery has the following problems: the raw material cost of the battery is high, and the price of the attached structural parts is also high, especially the production process of the battery cover plate is mostly made by stamping or machining of the pole...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/30
CPCH01M50/147H01M50/543Y02E60/10
Inventor 王洪军徐立舰
Owner 浙江锦泰电子有限公司
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