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Arc-shaped flexible package lithium battery and manufacturing method thereof

A technology for flexible packaging and lithium batteries, which is applied in the field of arc-shaped flexible packaging lithium batteries and its production. It can solve problems such as electrode piece breakage and battery failure, and achieve the effects of preventing short circuit or open circuit of pole pieces, facilitating bending and shaping, and improving flexibility.

Pending Publication Date: 2019-04-05
GUANG DONG VDL NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And in the process of long-term cycle charge and discharge, due to the repeated expansion and contraction of the electrode material, the electrode sheet is subjected to stress changes and causes fracture, which causes battery failure

Method used

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  • Arc-shaped flexible package lithium battery and manufacturing method thereof
  • Arc-shaped flexible package lithium battery and manufacturing method thereof
  • Arc-shaped flexible package lithium battery and manufacturing method thereof

Examples

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Embodiment Construction

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0053] Embodiments of the present invention provide a curved flexible package lithium battery and a manufacturing method thereof.

[0054] Please refer to Figure 1 to Figure 9 On the one hand, the embodiment of the present invention provides an arc-shaped flexible packaging lithium battery, including an arc-shaped winding core 2, an arc-shaped alu...

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Abstract

The invention discloses an arc-shaped flexible package lithium battery and a manufacturing method thereof. The arc-shaped flexible package lithium battery comprises an arc-shaped roll core, an electrode, and a diaphragm bag; the arc-shaped roll core covers an arc-shaped aluminum plastic film on the outer surface of the arc-shaped roll core; the electrode is led out from one end of the roll core; the arc-shaped roll core comprises an electrode piece; the diaphragm bag covers the outer side of the electrode piece; the electrode is led out from the horizontal direction of the electrode piece; andthe electrode piece is wound in the direction parallel to the electrode piece. The structural cell has the characteristic of high flexibility in the length direction, thereby facilitating arc shaping, 0-180 DEG arc shape bending of the battery can be realized; and the volume energy density of the battery is improved through the manufacturing method.

Description

technical field [0001] The invention relates to the field of batteries, and more specifically relates to an arc-shaped soft-packaged lithium battery and a manufacturing method thereof. Background technique [0002] With the rapid development of mobile electronic products, in order to meet the ever-changing power consumption needs of products, electronic products have put forward various requirements for lithium batteries assembled in electronic products. Please refer to Figure 10 , the traditional tab 310 welding method is vertical electrode sheet 30 welding, please refer to Figure 11 , the traditional electrode sheet 30 is wound into a winding core 20 along a direction perpendicular to the direction in which the tab 310 protrudes, please refer to Figure 12 and Figure 13 , the traditional diaphragm and aluminum-plastic film are packaged on both sides and on the top. The diaphragm is folded up and down to form the first edge seal 210 on the left, the second edge seal 22...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M10/0587H01M4/80
CPCH01M4/80H01M10/052H01M10/0587Y02E60/10Y02P70/50
Inventor 吴方余曹刚
Owner GUANG DONG VDL NEW ENERGY CO LTD
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