Battery core manufacturing method and system

A manufacturing method and cell technology, which are applied in the field of lithium-ion battery cell manufacturing methods and systems, can solve the problems of easy dislocation of pole pieces, easily deformed cell performance, low battery cell production efficiency, etc., and reduce manufacturing costs. , the same efficiency effect

Pending Publication Date: 2020-07-24
湖南领湃科技股份有限公司 +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in this application is that the existing battery cells produced by the winding method are easily deformed and have poor performance, and the battery cells produced by the laminated method have low production efficiency and the pole pieces are easily dislocated

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  • Battery core manufacturing method and system
  • Battery core manufacturing method and system
  • Battery core manufacturing method and system

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the application and simplify the description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and op...

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Abstract

The invention provides a battery core manufacturing method and system. The battery core manufacturing method comprises the steps: enabling n pairs of first electrode sheets and second electrode sheetsto be respectively pasted on the upper and lower surfaces of diaphragms of n lamination regions to form n lamination units; and winding the diaphragms from the first lamination unit to the nth lamination unit, so that each lamination unit is adhered to the surfaces of the diaphragms to form a wound and stacked battery core, wherein the length of the diaphragm between the odd-numbered lamination region and the subsequent lamination region is equal to the sum of the lengths of the two lamination regions and the length of the diaphragm for winding, the length of the diaphragm between the even-numbered lamination region and the subsequent lamination region is equal to the length of the diaphragm for winding, and the length of the diaphragm for winding adapts to the thickness and the number ofelectrode sheets needing to be coated during winding and the thickness and the number of layers of the diaphragm. The wound and stacked battery core has the structural/safety advantages that the wound and stacked battery core is wrapped in multiple layers, the whole wound and stacked battery core is fastened, all the layers are restrained by diaphragms and cannot move, dislocation is not likely to happen, and safety is high.

Description

technical field [0001] The present application relates to the field of manufacturing lithium-ion batteries, in particular to a method and system for manufacturing lithium-ion battery cells. Background technique [0002] The existing lithium battery core manufacturing methods mainly include winding and lamination. Both methods have their own advantages, but at present, there are also some problems in each of the two methods. [0003] For example, the advantages of winding batteries are high efficiency, low manufacturing cost, good alignment of the overall pole pieces, and mature process equipment. But the disadvantages are also obvious, such as the risk of deformation of the winding core in the later stage of charging and discharging. Compared with laminated sheets, the product performance is poor: large internal resistance, small magnification, low discharge platform, low life, low energy density, narrow adaptable thickness, and single shape. The field of adaptation is narr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/0583
CPCH01M10/0404H01M10/0459H01M10/0583Y02E60/10Y02P70/50
Inventor 韩园园
Owner 湖南领湃科技股份有限公司
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