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Button lithium ion battery and shell

A technology of lithium-ion batteries and ion batteries, which is applied in the direction of batteries, secondary batteries, battery pack components, etc., can solve the problems of affecting the sealing performance of batteries and increasing the risk of battery leakage, so as to ensure rigidity and strength, and ensure sealing Strength, the effect of avoiding shell deformation

Pending Publication Date: 2020-06-26
SHENZHEN GREPOW BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found in the research of the present invention that if a thinner steel shell is used, the space inside the shell can be increased, but the sealing performance of the battery will be affected, and the risk of battery leakage will increase

Method used

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  • Button lithium ion battery and shell
  • Button lithium ion battery and shell
  • Button lithium ion battery and shell

Examples

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Embodiment 1

[0050] see Figure 1-4 as shown,

[0051] This embodiment provides a button-type lithium-ion battery housing, which mainly includes a negative electrode case, a positive electrode case, and a sealing ring 3, wherein the negative electrode case is connected to the negative electrode of the battery cell located in the case, as a button-type lithium-ion battery. The negative pole of the battery and the positive pole are connected to the positive pole of the cell as the positive pole of the button lithium ion battery.

[0052] see figure 1 As shown, the positive electrode case includes an integrally stamped positive electrode top cover 11 and a positive electrode case wall 12, the positive electrode case wall 12 surrounds the edge of the lower bottom case, the positive electrode case wall 12 is perpendicular to the positive electrode top cover 11, and the positive electrode case wall 12 is located On one side of the top cover 11 , the positive electrode casing wall 12 forms a ca...

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Abstract

The invention relates to the field of lithium ion batteries, and discloses a button type lithium ion battery and a shell. The shell comprises: a negative electrode shell comprising a negative electrode top cover and a negative electrode shell wall, and the negative electrode shell wall surrounds the edge of the negative electrode top cover, is perpendicular to the negative electrode top cover andis located on one surface of the negative electrode top cover; the sealing ring is sleeved on the negative electrode shell; the positive electrode shell comprises a positive electrode top cover and apositive electrode shell wall, and the positive electrode shell wall surrounds the edge of the lower bottom shell, is perpendicular to the positive electrode top cover and is located on one surface ofthe positive electrode top cover; wherein the anode shell wall is sleeved outside the cathode shell wall, the sealing ring is arranged between the anode shell and the cathode shell at intervals, thetail end of the anode shell wall is an anode shell thick-wall annular section, the anode shell thick-wall annular section is bent and pressed outside the anode shell to form an annular seal, and the wall thickness of the anode shell thick-wall annular section is greater than that of other positions of the anode shell. By adopting the technical scheme, the air tightness of the shell is ensured on the basis of improving the capacity of the button lithium ion battery.

Description

technical field [0001] The invention relates to the field of lithium-ion battery manufacturing, in particular to a button-type lithium-ion battery case. . Background technique [0002] With the increasing application of smart wearable products, people's demand for small-sized lithium-ion button-type rechargeable batteries (referred to as button-type lithium-ion batteries) is also increasing. Button-type lithium-ion batteries are increasingly used in smart wearable products, such as earphones. Improving the capacity of the button battery is a major issue that needs to be solved at present. [0003] The negative shell and the positive shell of the current button-type lithium-ion battery are respectively made of stainless steel shells. Each steel shell is stamped and formed at one time. The wall thickness of the steel shell is uniform. The thinnest steel shell currently used is about 0.2mm. [0004] The inventor found in the research of the present invention that if a thinne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/0525H01M2/08
CPCH01M10/0525H01M2220/30H01M50/109H01M50/183Y02E60/10
Inventor 何安轩胡彦庆刘淼曾青
Owner SHENZHEN GREPOW BATTERY CO LTD
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