Method for improving surface quality of upper cover of battery and composite battery upper cover

A composite battery, surface quality technology, applied in the direction of battery cover/end cover, battery pack components, battery box/jacket, etc., can solve problems such as product defects and air leakage, reduce repair costs, improve blisters, and seal. good effect

Pending Publication Date: 2021-10-19
广东百汇达新材料有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing prepreg new energy vehicle battery cover is made of heavy prepreg, and the local surface quality is prone to blisters, pits, and air leakage during the production process, resulting in defective products. The repair rate is 90%, and there is a risk of assembly air leakage at this local location during installation

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
  • Method for improving surface quality of upper cover of battery and composite battery upper cover
  • Method for improving surface quality of upper cover of battery and composite battery upper cover
  • Method for improving surface quality of upper cover of battery and composite battery upper cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] figure 1 A schematic diagram of the mold structure is shown for the method for improving the surface quality of the battery upper cover by using the electronic cloth composite prepreg forming method of the present invention.

[0027] The method for improving the surface quality of the battery upper cover of the present invention comprises the following steps:

[0028] (1) Lay the prepreg in the entire inner lining of the mold;

[0029] (2) placing an electronic cloth at a local position of the prepreg;

[0030] (3) Start the press to close the mold and carry out the molding operation. The molding operation includes continuous first-stage compression molding and second-stage compression molding. The first-stage compression molding parameters are: molding pressure is 20-50T , the holding time is 15-60 seconds; the molding parameters of the second stage are: the molding pressure is 160-240T, the holding time is 240-480 seconds; the clamping speed is 5-10mm / s; the mold te...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for improving the surface quality of an upper cover of a battery. The method comprises the following steps that prepreg is laied in the whole lining of a mold; electronic cloth is placed at the local position of the prepreg; a press is started to close the mold and perform compression molding operation, the compression molding operation comprises continuous first-stage compression molding and second-stage compression molding, and the first-stage compression molding parameters are as follows, the compression molding pressure is 20-50T, and the pressure holding time is 15-60 seconds; the second-stage compression molding parameters are as follows, the compression molding pressure is 160-240 T, and the pressure maintaining time is 240-480 seconds; the mold closing speed is 5-10 mm/s; the temperature of the upper mold is 153-163 DEG C, and the temperature of the lower mold is 155-165 DEG C; and the mold is opened and the product is taken out.

Description

technical field [0001] The invention belongs to the field of composite material molding technology, and in particular relates to a method for improving the surface quality of a battery top cover by using electronic cloth composite prepreg molding, and a composite battery top cover prepared by the method. Background technique [0002] Prepreg (Preimpregnated Materials) is a prepreg sheet product made by impregnating the matrix (Matrix) in the reinforced fiber (Reinforced Fiber). It is an intermediate material for composite materials and an important type of semi-finished composite materials. It has developed very rapidly in recent years. The composite material prepared by prepreg is light in weight and high in strength, which simplifies the manufacturing process of parts, reduces the processing and assembly process of parts, reduces production costs, improves product reliability, reduces maintenance costs, and reduces life cycle costs. Lightweight can be achieved under the p...

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): B29C70/34B29C70/54H01M50/147H01M50/164
CPCB29C70/345B29C70/54H01M50/147H01M50/164Y02E60/10
Inventor 卫福海余桐柏曾宇清何玉莲
Owner 广东百汇达新材料有限公司
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