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Combined battery cap

A combined battery technology, which is applied in the direction of battery cover/end cover, battery box/outer, battery pack parts, etc., can solve the problems of large contact internal resistance, unstable contact, inability to charge and discharge, etc., and prolong the service life , Improve production efficiency, and stabilize internal resistance

Inactive Publication Date: 2010-11-17
SHENZHEN MOTTCELL NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the top cover 111 of the cap 11 of the above-mentioned lithium ion battery 1 is in overlapping contact with the bottom cover 112, and is pressed together by the rubber ring 12, which makes the contact between the top cover 111 and the bottom cover 112 extremely unstable. , during long-term storage or use, the contact internal resistance between the top cover 111 and the bottom cover 112 will increase, which will cause the overall internal resistance of the existing lithium-ion battery to increase and cannot perform conventional charging and discharging.
Thus shortening the life of existing Li-ion batteries

Method used

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Embodiment Construction

[0018] In order to describe the technical content and structural features of the present invention in detail, the following will be further described in conjunction with the embodiments and accompanying drawings, wherein the same reference numerals in different drawings represent the same components.

[0019] see figure 2 , image 3 and Figure 5 , the combined battery cap 2 of the present invention is adapted to be installed in a lithium-ion battery 3 . The combined battery cap 2 includes a plastic pad 21, a metal top cover 22 and a bottom cover 23, and the bottom cover 23 is tightly wrapped and buckled on the top cover 22 to form an integrated hollow structure. A housing cavity for tightly housing the plastic pad 21 is formed, and the plastic pad 21 is tightly accommodated in the housing cavity. Specifically, the top cover 22 includes a contact portion 221 for electrical contact with the outside world and an abutment portion 222 extending outward along the periphery of t...

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Abstract

The invention provides a combined battery cap, which comprises a plastic gasket, a metal top cap and a bottom cap. The bottom cap is closely fastened to the top cap to form an integrated hollow structure which forms an accommodating cavity for closely accommodating the plastic gasket; and the plastic gasket is closely accommodated in the accommodating cavity. The bottom cap is closely fastened to the top cap to form the integrated hollow structure, and the plastic gasket is closely accommodated in the hollow structure, so the top cap and the bottom cap of the combined battery cap are contacted and cannot cause the increase of contact internal resistance together with the environmental change; therefore, the internal resistance of the combined battery cap is stable, and the service life of a battery with the combined battery cap is prolonged; moreover, the production efficiency of the combined battery cap is improved, so the cost is reduced.

Description

technical field [0001] The invention relates to a battery cap, in particular to a combined battery cap adapted to be installed in a lithium ion battery. Background technique [0002] With the continuous development of the economy and the continuous improvement of people's living standards, mobile devices such as video cameras, notebook computers and digital cameras have been more and more widely used, thus forming a large demand for batteries and creating good conditions for the development of the battery industry. development platform. Lithium-ion battery, as a kind of battery, is more and more favored by people because of its high energy density and various excellent properties. [0003] Lithium-ion batteries are composed of many parts, and among the many parts, the cap of lithium-ion batteries is one of the key components of lithium-ion batteries, because the quality of the cap design is related to the internal resistance of lithium-ion batteries , life and manufacturin...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M50/147
CPCY02E60/10
Inventor 陈明军
Owner SHENZHEN MOTTCELL NEW ENERGY TECH CO LTD
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