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Low-cost disposable lithium ion battery

A lithium-ion battery, disposable technology, applied in the direction of secondary batteries, battery electrodes, battery components, etc., can solve the problem of high cost, achieve multiple markets and profits, improve volumetric energy density and weight energy density, and save labor cost effect

Inactive Publication Date: 2022-05-27
惠州虎电科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a low-cost disposable lithium-ion battery to solve the technical problem of high cost in the prior art

Method used

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  • Low-cost disposable lithium ion battery
  • Low-cost disposable lithium ion battery
  • Low-cost disposable lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A low-cost disposable lithium-ion battery, comprising a casing, a battery core and an electrolyte placed inside the casing, a battery core and an electrolyte placed inside the casing, and the battery core is composed of a positive electrode sheet and a separator. and the negative electrode sheet are made by winding or lamination process, the positive electrode sheet includes a positive electrode ear, an aluminum foil spot welded on one end of the positive electrode ear, and a positive electrode active material uniformly coated on the aluminum foil; the positive electrode active material It is a positive active material containing lithium cobalt oxide;

[0028] The electrolyte includes 20wt% of ethylene carbonate, 50wt% of dimethyl carbonate, 10wt% of ethyl methyl carbonate, 10wt% of lithium hexafluorophosphate and 10wt% of additives;

[0029] The negative electrode sheet includes a negative electrode tab 1 , a metal foil 2 spot welded on one end of the negative electrod...

Embodiment 2

[0037] A low-cost disposable lithium-ion battery, comprising a casing, a battery core and an electrolyte placed inside the casing, a battery core and an electrolyte placed inside the casing, and the battery core is composed of a positive electrode sheet and a separator. and the negative electrode sheet are made by winding or lamination process, the positive electrode sheet includes a positive electrode ear, an aluminum foil spot welded on one end of the positive electrode ear, and a positive electrode active material uniformly coated on the aluminum foil; the positive electrode active material It is a positive active material containing lithium manganate;

[0038] The electrolyte includes 23% ethylene carbonate, 45% dimethyl carbonate, 8% ethyl methyl carbonate, 12% lithium hexafluorophosphate and 12% additives;

[0039] The negative electrode sheet includes a negative electrode tab 1 , a metal foil 2 spot welded on one end of the negative electrode tab 1 , and a protective ta...

Embodiment 3

[0047] A low-cost disposable lithium-ion battery, comprising a casing, a battery core and an electrolyte placed inside the casing, a battery core and an electrolyte placed inside the casing, and the battery core is composed of a positive electrode sheet, a separator and the negative electrode sheet are made by winding or lamination process, the positive electrode sheet includes a positive electrode ear, an aluminum foil spot welded on one end of the positive electrode ear, and a positive electrode active material uniformly coated on the aluminum foil; the positive electrode active material It is a positive active material containing nickel cobalt lithium manganate;

[0048] The electrolyte includes 25wt% ethylene carbonate, 51wt% dimethyl carbonate, 8wt% methyl ethyl carbonate, 8wt% lithium hexafluorophosphate and 8wt% additives;

[0049] The negative electrode sheet includes a negative electrode tab 1 , a metal foil 2 spot welded on one end of the negative electrode tab 1 , a...

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Abstract

The invention discloses a low-cost disposable lithium ion battery, and belongs to the technical field of lithium batteries, the low-cost disposable lithium ion battery comprises a shell, a battery core and an electrolyte which are arranged in the shell, and a battery core and an electrolyte which are arranged in the shell, the battery core is prepared by a positive plate, an isolating membrane and a negative plate through a winding or laminating process, the positive plate comprises a positive tab, an aluminum foil spot-welded at one end of the positive tab, and a positive active material uniformly coated on the aluminum foil; the negative plate comprises a negative tab, a metal foil material spot-welded at one end of the negative tab and a protective adhesive tape attached to one end of the negative tab, the negative plate does not need to coat an active substance on the metal foil material, active substance stirring and coating procedures in a traditional process are removed, and the lithium ion battery is suitable for being used as a disposable lithium ion battery. The labor cost, the material cost, the machine equipment cost and other costs are saved, the volume energy density and the weight energy density are also improved, and more markets and profits are gained for enterprises.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a low-cost disposable lithium ion battery. Background technique [0002] At present, disposable lithium-ion batteries are more and more widely used, such as testing instruments, electronic cigarettes, etc. The traditional structure of the negative electrode sheet of a disposable lithium ion battery is as follows: the graphite, the conductive agent and the binder are mixed and stirred evenly, then coated on the copper foil, and then rolled and spot welded on the tabs, and then the tape is made to be complete. the negative electrode. The pole piece manufacturing method has the following characteristics: the pole piece manufacturing process is simple and mature, and is suitable for mass production, but the cost is relatively high when applied to a disposable lithium ion battery. SUMMARY OF THE INVENTION [0003] Embodiments of the present invention provide a low-cost d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/66H01M50/536H01M4/505H01M4/525H01M10/0567H01M10/0525H01M10/058
CPCH01M4/13H01M4/661H01M50/536H01M4/505H01M4/525H01M10/0567H01M10/0525H01M10/058H01M2004/027Y02P70/50
Inventor 孙恒阳吴倩明刘金科赖国柱
Owner 惠州虎电科技发展有限公司