Encapsulation type rechargeable lithium ion button battery

A button battery and rechargeable lithium technology, which is applied in the field of lithium-ion batteries, can solve problems such as corrosion, complex structure, damage, etc., and achieve the effects of long service life, compact structure, and good sealing performance

Pending Publication Date: 2017-02-22
ZHUHAI ZHI LI BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the charging is stopped, the electrons provided by the deposited lithium will cause the oxide layer on the surface of the steel shell to be reduced and destroyed
Especially at the welding part of the tab and the steel shell, although there is no direct contact with the electrode roll, there is bimetal due to welding, and the potential of the tab is higher, which is more likely to attract electrons provided by lithium and cause the original oxide layer to be destroyed. reduction
After lo

Method used

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  • Encapsulation type rechargeable lithium ion button battery
  • Encapsulation type rechargeable lithium ion button battery

Examples

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Example Embodiment

[0017] like figure 1 and figure 2 As shown, the present invention includes a sealed case, an electrolyte disposed in the sealed case, and an electrode disposed in the electrolyte, the electrode is a spirally wound electrode and the outermost circle of the spirally wound electrode is provided with an insulating And the film 12 that the ions cannot conduct; the film 12 is made of polyester film and the thickness of the film is 0.03 mm; the outer circle of the spirally wound electrode has a layer of insulation and the film 12 that the ions cannot conduct, so as to ensure Batteries have higher reliability and longer cycle life.

[0018] In this embodiment, the sealing shell includes an inner cover and an outer shell that cooperate with each other, and the inner cover includes a top cover 1 , an inner vertical edge 2 perpendicular to the top cover 1 , and the inner vertical edge 2 located on the top cover 1 and the inner vertical edge. The shoulder 3 between 2 and the inner open...

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Abstract

The invention discloses an encapsulation type rechargeable lithium ion button battery, and is applied to the technical field of lithium ion batteries. The encapsulation type rechargeable lithium ion button battery comprises a sealing shell, electrolyte and an electrode. The electrolyte is arranged in the sealing shell, the electrode is arranged in the electrolyte and is a spirally wound electrode, and an insulating and ion-impermeable film (12) is arranged on the outermost ring of the spirally wound electrode. The encapsulation type rechargeable lithium ion button battery has the advantages of compact structure, stability in use and long service life.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a rubber-encapsulated rechargeable lithium ion button battery. Background technique [0002] Rechargeable lithium-ion batteries and lithium pouch batteries are widely used in sustainable electronic devices such as mobile phones and earphones. In particularly small devices such as hearing aids, volumetric energy density is a key consideration. Due to the requirement for the volume of rechargeable lithium-ion batteries, in order to reduce the volume of the battery while ensuring the application efficiency of the battery, spirally wound electrodes are often used, but in the process of increasing the energy density of the battery volume, there are new For example, in the Chinese patent application. and the US patent (US,, B), the wound electrode is directly used, and the outermost ring is wrapped by a pole piece or a diaphragm after winding and partially pasted with tape fixed. Since the b...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M2/10H01M10/04H01M10/058H01M50/216
CPCH01M10/0427H01M10/058H01M10/0587H01M50/216Y02E60/10Y02P70/50
Inventor 杨友清王昉孙法炯黄欣
Owner ZHUHAI ZHI LI BATTERY
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