Flexible-package cell negative pressure formation method

A flexible packaging and cell technology, used in non-aqueous electrolyte batteries, electrolyte battery manufacturing, sustainable manufacturing/processing, etc., can solve problems such as affecting the contact of pole pieces, reducing the effect of formation, hindering formation, etc., to improve quality and efficiency, avoid adverse effects

Inactive Publication Date: 2019-06-14
贵州嘉盈科技有限公司
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the soft-packed lithium-ion cells produce gas when the formation is activated, but the gas can only be stored in the aluminum-plastic packaging film shell. When the gas reaches a certain amount, it will affect the contact of the pole pieces, thereby hindering the formation and reducing the formation. Effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexible-package cell negative pressure formation method
  • Flexible-package cell negative pressure formation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like Figure 1-2 As shown, a method for the negative pressure formation of flexible packaging cells, including a constant temperature box 1, a fixture module 2, a formation module 3 and a vacuum pump 4, and the fixture module 2 and the formation module 3 are all placed in the constant temperature box 1. The method includes the following steps :

[0033] S1. Place the battery cell 5 in the fixture module 2;

[0034] S2. Adjust the moving parts of the fixture module 2 to pressurize the battery cell 5;

[0035] S3. Connect one end of the pinhole vacuum pipeline to the output end of the vacuum pump 4, and insert the other end of the pinhole vacuum pipeline into the battery cell 5, so that the pinhole vacuum pipeline communicates with the battery cell 5;

[0036] S4. Encapsulate the hole where the pinhole vacuum pipe is inserted into the cell 5;

[0037] S5, open the valve of the vacuum pump 4 to exhaust, so that the inside of the cell 5 is in a negative pressure state; ...

Embodiment 2

[0048] like Figure 1-2 As shown, the difference from Embodiment 1 is that in this embodiment, in step S5, the valve of the vacuum pump 4 is regularly opened for exhaust. This can be used as an operation mode to maintain the negative pressure in the battery cell 5 .

[0049]Other structures and methods are the same as those in Embodiment 1, and will not be repeated here.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of battery technologies and particularly relates to a flexible-package cell negative pressure formation method. A constant-temperature box, a fixture module, a formation module and a vacuum pump are included, wherein the fixture module and the formation module are both contained in the constant-temperature box. The method comprises the steps that S1, cells are placed in the fixture module; S2, a movable component of the fixture module is adjusted to pressurize the cells; S3, one end of a pinhole vacuum pipeline is communicated with the output end of the vacuum pump, and the other end of the pinhole vacuum pipeline is inserted into the cells, so that the pinhole vacuum pipeline is communicated with the interior of each cell; and S4, hole positions, inserted into the cells, of the pinhole vacuum pipeline are packaged. Through the method, the battery cells can be subject to formation under negative pressure, the adverse influence of a gas generated in the formation process on cell formation is effectively avoided, and therefore formation quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a method for negative-pressure formation of soft-packaged batteries. Background technique [0002] In the manufacturing process of polymer lithium-ion batteries, the battery cells need to be formed, and the formation process directly affects the performance and quality of the battery. Therefore, in the battery manufacturing process, the formation process plays a vital role. [0003] In the prior art, the soft-packed lithium-ion cells produce gas when the formation is activated, but the gas can only be stored in the aluminum-plastic packaging film shell. When the gas reaches a certain amount, it will affect the contact of the pole pieces, thereby hindering the formation and reducing the formation. Effect. [0004] In summary, there are defects in related technologies, which need to be improved urgently. Contents of the invention [0005] The purpose of the presen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058
CPCY02E60/10Y02P70/50
Inventor 曾龙邱爱华陶芝勇胡清平黄泽伟曾坚义
Owner 贵州嘉盈科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap