Double-station air tightness detecting device and method applied to top cover of lithium power battery

A technology of air tightness detection and lithium battery, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc., which can solve the problems of incapable of mass production, long measurement time, and affecting safety. , to achieve highly automated air tightness testing, reduce manual workload, and achieve accurate results

Pending Publication Date: 2020-02-21
DONGGUAN UNIV OF TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the power lithium battery, the airtightness of the top cover of the power lithium battery is very important, which directly affects the quality of the entire power battery and the safety of the electric vehicle. The existing method is that workers place the top cover of the power lithium battery in the upper and lower chambers In the body, workers seal the upper and lower cavities and continuously pressurize the cavity inside the top cover of the power lithium battery. According to the pressure gauge installed in the cavity, it is judged whether the airtightness of the top cover of the power lithium battery is up to standard, but such The measurement method takes a long time to measure, is inefficient, cannot be mass-produced, and requires a lot of manual operations, which is easy to make operational errors or confuse the test results. At the same time, it is difficult to find out where the top cover of the power lithium battery leaks.

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
  • Double-station air tightness detecting device and method applied to top cover of lithium power battery
  • Double-station air tightness detecting device and method applied to top cover of lithium power battery
  • Double-station air tightness detecting device and method applied to top cover of lithium power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, such as Figure 1 to Figure 7 As shown, a double-station air tightness detection device applied to the top cover of a power lithium battery is provided with a driving part 100, a connecting assembly 101, a transmission part 102, a control part 103 and a sealing part 104; the driving part 100 is provided with a cylinder 6 ;

[0036] The connection assembly 101 is provided with a device bottom plate 1, a support column 2, a lower pressure mounting plate 3, a lower cavity base 5, a floating joint 9, a fixed block 10, an upper cavity base 11, and a limit block 18;

[0037] The transmission part 102 is provided with a linear bearing 7, a guide post 8, a positioning pin 17, a spring 19, and a positioning post 20;

[0038] The control part 103 is provided with a safety grating 4, a proportional valve group 12, a two-position five-way solenoid valve group 13, and a direct-acting two-way solenoid valve group 14; the sealing part 104 is provided with a lower cavity 15...

Embodiment 2

[0054] Example 2, see Figure 8-9 , this embodiment is basically the same as Embodiment 1, the difference is that the upper end of the positioning pin 17 of the lower cavity 15,

[0055] The upper cavity 16 is provided with an embedding groove 161 matched with the positioning pin 17, and an electromagnet 162 is arranged in the embedding groove 161. When the positioning pin 17 is embedded in the upper cavity 16, the electromagnet 162 is opened, and the positioning pin and the positioning pin are connected to each other. The fixedly connected lower cavity 15 is attracted upwards, so that the gap between the upper cavity 16 and the lower cavity 15 is closed, the sealing performance is enhanced, and the air tightness detection of the lithium battery top cover is ensured to be accurate.

Embodiment 3

[0056] Example 3, see Figure 10-11 , the present embodiment is basically the same as Embodiment 1, the difference is that the upper chamber 16 and the lower chamber 15 are located on the outside of the lithium battery top cover detection placement groove, and are provided with an elastic pressure expansion sealing rubber ring 153, and a sealing Rubber ring groove 154, the elastic pressure expansion sealing rubber ring 153 is placed in the sealing rubber ring groove 154, the elastic pressure expansion sealing rubber ring 153 is provided with a hollow air passage 155, and the elastic pressure expansion sealing rubber ring is connected with an air compressor;

[0057] When the upper cavity and the lower cavity are pressed together, the air compressor presses air into the elastic pressure expansion sealing rubber ring, so that the elastic pressure expansion sealing rubber ring expands, and the elastic pressure expansion sealing rubber ring connects with the upper cavity and the lo...

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 discloses a double-station air tightness detecting device and method applied to a top cover of a lithium power battery. The double-station air tightness detecting device applied to the top cover of the lithium power battery is provided with a driving piece, a connecting piece, a transmission piece, a control piece and a sealing piece; the control piece is provided with a safety optical grating, a proportional valve group and a two-position five-way solenoid valve group; the sealing piece is provided with a lower cavity and an upper cavity; a first pressure sensing device, a second pressure sensing device, a third pressure sensing device and a fourth pressure sensing device are arranged in front of the lower cavity; according to the double-station air tightness detecting device, the pressure values of various sealing areas are automatically monitored through the pressure sensing devices so as to detect the air tightness of the top cover of the lithium power battery; a leakage area of the top cover of the lithium power battery with poor air tightness can be found automatically; the production process of the top cover of the lithium power battery is further improved; theleakage position of the top cover of the lithium power battery can be found automatically; the determination result is accurate; and the traceability is good.

Description

technical field [0001] The invention relates to the technical field of preparation of industrial automation equipment, in particular to a double-station air tightness detection device and a detection method applied to the top cover of a power lithium battery. Background technique [0002] In the power lithium battery, the airtightness of the top cover of the power lithium battery is very important, which directly affects the quality of the entire power battery and the safety of the electric vehicle. The existing method is that workers place the top cover of the power lithium battery in the upper and lower chambers In the body, workers seal the upper and lower cavities and continuously pressurize the cavity inside the top cover of the power lithium battery. According to the pressure gauge installed in the cavity, it is judged whether the airtightness of the top cover of the power lithium battery is up to standard, but such The measurement method takes a long time to measure, ...

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): G01M3/26
CPCG01M3/26
Inventor 叶国良郭建文孙振忠郑泽鑫肖赵康黎宇恒
Owner DONGGUAN UNIV OF TECH
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