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Laminated flexible battery and preparation method thereof

A flexible battery and laminated technology, applied in the field of lithium-ion batteries, can solve the problems of low space utilization and limited bending capacity of flexible structures, and achieve the effects of saving connection distance, good safety, and high energy density

Active Publication Date: 2016-12-07
APOWER ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there are many independent monomers inside this type of structure and external connections, the actual space utilization rate is low and the bending capacity of the flexible structure is limited.

Method used

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  • Laminated flexible battery and preparation method thereof
  • Laminated flexible battery and preparation method thereof
  • Laminated flexible battery and preparation method thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0031] A laminated flexible battery includes a battery core formed by laminating positive pole pieces, negative pole pieces and separators, and an aluminum-plastic film wrapping the battery core. The separator is located between the positive pole piece and the negative pole piece, the head of the positive pole piece is welded with the positive pole lug, and the head of the negative pole piece is welded with the negative pole lug. The present invention is different from the traditional lithium-ion single battery except that the structure and production method of the positive electrode carrier fluid, the negative electrode carrier fluid, and the aluminum-plastic film are different, and the other battery manufacturing processes can be basically the same as the prior art.

[0032] Such as figure 1 As shown, the positive electrode sheet includes a positi...

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Abstract

The invention provides a laminated flexible battery and a preparation method thereof. The preparation method comprises the following steps: (1) punching out cathode current carriers, wherein the cathode current carriers comprise more than or equal to two cathode current-carrying sheets, cathode connecting sheets and cathode tab welding sheets; the adjacent cathode current-carrying sheets are connected by the cathode connecting sheets in series; (2) punching out anode current carriers, wherein the anode current carriers comprise more than or equal to two anode current-carrying sheets, anode connecting sheets and anode tab welding sheets; the adjacent anode current-carrying sheets are connected by the anode connecting sheets in series; (3) coating the surfaces of the cathode current-carrying sheets with cathode materials and coating the surfaces of the anode current-carrying sheets with anode materials; (4) laminating the cathode current carriers, the anode current carriers and diaphragms by utilizing the lamination technology to form cells, wherein the lamination positions of the cathode current-carrying sheets and the anode current-carrying sheets coincide; the mutually overlapped cathode current-carrying sheets and anode current-carrying sheets form cell monomers; (5) putting the cells in aluminum-plastic films to be packaged. The laminated flexible battery and the preparation method have the effects of improving the bending capacity of the flexible battery, increasing the space use rate of the flexible battery and improving the safety of the flexible battery.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a laminated flexible battery and a manufacturing method thereof. Background technique [0002] Electronic devices are ubiquitous in society and can be found everywhere from portable cell phones to watches. Many of these electronic devices require some sort of portable power source. Many of these electronic devices have unique form factors, so a portable power source for any one electronic device may not fit into any other electronic device. Additionally, these unique form factors often require flexible battery arrangements, and conventional battery packs are often too rigid, and repeated bending of them can lead to cell damage and battery failure. As a result of trying to accommodate non-flexible battery packs, the package size for portable electronics may not be ideal. With the rapid development of wearable smart devices, it is necessary to develop flexible batteries that can meet the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/70H01M10/0525H01M10/058
CPCH01M4/70H01M10/0525H01M10/058H01M2220/30Y02E60/10Y02P70/50
Inventor 张帷远韩永海陈刚何元涛
Owner APOWER ELECTRONICS CO LTD
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