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Lithium ion button battery

A button battery and lithium-ion technology, applied in the direction of non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing, electrode manufacturing, etc., can solve the problems of cell changes, etc., and achieve high-rate discharge, high cycle life characteristics, and high capacity effects

Inactive Publication Date: 2016-10-12
SHENZHEN JERAMIC MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The design involved in the present invention effectively copes with and solves the problems caused by the change of the battery core in the charging and discharging of this lithium-ion button battery

Method used

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  • Lithium ion button battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A lithium-ion button cell with a diameter of 12 mm and a height of 5.4 mm such as figure 1 Shown, its electric core positive pole sheet (6) obtains at the double-sided coating of aluminum foil containing the coating of lithium cobaltate, and its manufacturing process is the well-known knowledge of those skilled in the art, does not explain more here; Negative pole The pole piece (7) is obtained by coating the coating containing graphite on both sides of the copper foil, and its manufacturing process is well known to those skilled in the art; the first separator (8) selects a single-layer porous polypropylene film, and Two diaphragms (9) adopt porous polytetrafluoroethylene film.

[0039] The layer sequence of the electrode sheet group is: positive electrode sheet / first separator / negative electrode sheet / second separator.

[0040] The dimensions of positive and negative electrodes and separators can be determined by those experienced in the technical field after calcula...

Embodiment 2

[0048] A kind of 16 millimeters in diameter and height are the electric cell positive plate (6) of the lithium-ion button cell of 5.4 millimeters is to be coated with the coating that contains nickel-manganese-cobalt oxide lithium on the both sides of aluminum foil, and its manufacturing process is the technical field The knowledge known to the personnel is not explained here; the negative electrode sheet (7) is the same as the specific embodiment one. Both the first diaphragm (8) and the second diaphragm (9) are made of cellulose film.

[0049] The layer sequence of the electrode sheet group is: negative electrode sheet / first separator / positive electrode sheet / second separator.

[0050] The dimensions of positive and negative electrodes and separators can be determined by those experienced in the technical field after calculations and experiments based on battery capacity, electrode capacity, cell size and winding requirements, and no further explanation is given here.

[00...

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Abstract

The invention discloses a lithium ion button battery with the height and diameter being 1 or smaller. Anode and cathode shells and insulation sealing rings are sealed through hemming and tight-pressing, a battery core with the winding axis perpendicular to circular flat planes of the anode and cathode shells of the battery is a multi-polygon regular prism, at least one material is adopted in a diaphragm in battery core pole piece set, a columnar sleeve piece is embedded between the cylindrical side wall of the battery core and the cylindrical side wall of an inner cavity of the anode shell and made of elastomer plastics or metal, and the sleeve contains the battery core so as to effectively adapt to changes of the size of the battery core during charging and discharging.

Description

technical field [0001] The invention belongs to the field of miniature lithium ion storage batteries, and relates to a miniature lithium ion button battery. Background technique [0002] Generally, button batteries visibly include positive and negative stainless steel shells and materials that play an insulating and sealing role between them. The combination and sealing of the three materials are usually achieved by crimping and sealing processes well known in the button battery industry. Such as figure 1 The realization of the combined structure of the negative electrode shell 2, the positive electrode shell 3 and the insulating sealing ring 4; inside the battery, the positive and negative electrodes of the battery cell with a specific configuration are connected to the positive and negative stainless steel in a specific electrical and mechanical contact. case. The cell is made by winding the positive and negative electrodes and the separator, or the positive and negative...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M4/04
CPCH01M4/0473H01M10/058Y02E60/10Y02P70/50
Inventor 不公告发明人
Owner SHENZHEN JERAMIC MATERIALS TECH CO LTD
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