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Flexible lithium ion battery

A lithium-ion battery, flexible technology, applied in the direction of batteries, secondary batteries, battery electrodes, etc., can solve the problems of low energy density, decline in consumer experience, etc., to reduce the breakage of pole pieces, easy bending, and prevent falling Effect

Active Publication Date: 2016-12-21
APOWER ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most wearable electronic products have a certain shape or curvature, the shape of traditional lithium-ion batteries is fixed, and only the limited space of these electronic products can be used. Not only the energy density is low, but also in the process of repeated wearing, because the battery The shape cannot be bent, which will lead to a decline in consumer experience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a flexible lithium-ion battery includes a battery cell and an outer packaging film 4 wrapped outside the battery cell, and a flexible film is arranged between the outer packaging film 4 and the upper surface and the lower surface of the battery cell.

[0027] Such as figure 1 As shown, the battery cell is formed by stacking a positive pole piece 1, a separator 2, and a negative pole piece 3, and the number of positive and negative pole pieces is determined according to the battery capacity and thickness. The positive electrode sheet 1 includes a positive electrode carrier fluid and a positive electrode material coated on the surface of the positive electrode carrier fluid. The positive electrode material is made of lithium cobaltate as the main material, mixed with a flexible PVDF binder and a conductive agent; the positive electrode electrode is made of For sheet 1, the materials are first mixed into a slurry, then evenly coated on the surfa...

Embodiment 2

[0037] Such as figure 1 As shown, a flexible lithium-ion battery includes a battery cell and an outer packaging film 4 wrapped outside the battery cell, and a flexible film 5 is provided between the outer packaging film 4 and the upper surface and the lower surface of the battery cell.

[0038] Such as figure 1 As shown, the cell is formed by stacking positive pole pieces 1, separators, and negative pole pieces 3, and the number of positive and negative pole pieces is determined according to the battery capacity and thickness. The positive electrode sheet 1 includes a positive electrode carrier and a positive electrode material coated on the surface of the positive electrode carrier. The positive electrode material is made of lithium nickel manganese cobaltate as the main material, mixed with a flexible PVDF binder and a conductive agent; For the positive electrode sheet 1, the materials are first mixed into a slurry, then uniformly coated on the surface of the aluminum foil,...

Embodiment 3

[0048] Such as figure 1 As shown, a flexible lithium-ion battery includes a battery cell and an outer packaging film 4 wrapped outside the battery cell, and a flexible film 5 is provided between the outer packaging film 4 and the upper surface and the lower surface of the battery cell.

[0049] Such as figure 1 As shown, the cell is formed by stacking positive pole pieces 1, separators, and negative pole pieces 3, and the number of positive and negative pole pieces is determined according to the battery capacity and thickness. The positive electrode sheet 1 includes a positive electrode carrier and a positive electrode material coated on the surface of the positive electrode carrier. The positive electrode material is made of lithium manganate as the main material, mixed with a flexible PVDF binder and a conductive agent; the positive electrode is made For sheet 1, the materials are first mixed into a slurry, then evenly coated on the surface of the aluminum foil, and punched...

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Abstract

The invention discloses a flexible lithium ion battery. The flexible lithium ion battery comprises an electrical core and an outer packaging film which is wrapped outside the electrical core; flexible membranes are arranged between the outer packaging film and the upper surface of the electrical core and between the outer packaging film and the lower surface of the electrical core, and cover the upper surface and the lower surface of the electrical core, a plurality of buffer bulges are arranged between at least one piece of the flexible film and the outer packaging film, and concave pits are formed in the buffer bulges and correspond to the inner surface of the outer packaging film. The buffer bulges are added on the surface of the electrical core, and have certain elasticity, and the whole battery takes precedence over a pole piece to be extruded by a bending stress while bending, thereby protecting power falling and fracture of the pole piece for bearing an excessively high stress to increase the bending times of the battery.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a flexible lithium ion battery. Background technique [0002] In recent years, the market of wearable electronic products is very hot, and the sales of products such as smart watches, smart bracelets, smart glasses, smart necklaces, and smart rings are increasing year by year. Since most wearable electronic products have a certain shape or curvature, the shape of traditional lithium-ion batteries is fixed, and only the limited space of these electronic products can be used. Not only the energy density is low, but also in the process of repeated wearing, because the battery The shape of the product cannot be bent, which will lead to a decline in the consumer experience. Therefore, the development of a flexible battery that can be bent repeatedly with the shape of wearable electronic products can not only increase the energy density of the battery and increase the use time, but also improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M4/62H01M10/0525
CPCH01M4/621H01M10/0525H01M10/058H01M2220/30Y02E60/10Y02P70/50
Inventor 余志陈俊涛王玉虎
Owner APOWER ELECTRONICS CO LTD
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