Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for testing humidity and heat resistance reliability of solar cell

A technology of solar cells and solar cells, which is applied in the fields of climate sustainability, semiconductor/solid-state device testing/measurement, circuits, etc. It can solve the problems of long DH test time, unfavorable rapid optimization of battery performance, slow feedback of reliability and quality, etc. problems, achieve fast and effective reliability and stability, save test time and component manufacturing costs, and improve efficiency and timeliness

Pending Publication Date: 2021-01-26
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing method has the shortcomings of long DH test time, slow feedback on the reliability and quality of battery products in the production line, and is not conducive to the rapid optimization of battery performance.

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 testing humidity and heat resistance reliability of solar cell
  • Method for testing humidity and heat resistance reliability of solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Taking silicon heterojunction (SHJ) solar cells as an example, the SHJ solar cells are prepared first, and the process flow is: raw silicon wafer → cleaning and texturing → CVD preparation of amorphous silicon films (including intrinsic amorphous silicon, N-type amorphous silicon, etc.) Silicon, P-type amorphous silicon), forming PN junction and NN + High and low junction → production of transparent conductive oxide film (TCO for short) → metallization technology to form electrodes → electrical performance testing and sorting → packaging and storage. Silicon heterojunction (SHJ) solar cell structure such as figure 1 shown.

[0023] From the above SHJ solar cell process flow, it can be found that the parts that affect the reliability of solar cells and components include: silicon wafer quality, amorphous silicon film structure and defect characteristics, TCO material composition and structure, metal electrodes, etc.

[0024] In this embodiment, the impact of different...

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 relates to a method for testing the humidity and heat resistance reliability of a solar cell. The method comprises the following steps of: spraying a sodium salt solution on the surfaceof the solar cell, performing a humidity and heat resistance environment reliability test, and determining the humidity and heat resistance reliability of the cell according to electrical parameter variation before and after the reliability test. According to the invention, the reliability and stability of environmental climate resistance of the solar cell can be rapidly and effectively detected,the assembly damp-heat reliability test time and the assembly manufacturing cost are saved, and the efficiency and timeliness of humidity and heat resistance reliability are improved.

Description

technical field [0001] The invention belongs to the field of solar cell performance testing, and in particular relates to a testing method for the reliability of the solar cell against heat and humidity. Background technique [0002] The nominal service life of solar photovoltaic modules is more than 25 years. In order to ensure the service life of the modules, the modules must undergo relevant environmental reliability tests. Environmental test 3000 hours) Reliability is the most important test. [0003] At present, the method of testing the reliability of the battery sheet resistance to humidity and heat is to package the battery sheet into a module, and after standing in the environmental test chamber for 1000 hours or 3000 hours, the output parameters of the module (open circuit voltage, short circuit current, fill factor, conversion efficiency, etc.) to evaluate its attenuation and reliability. According to the IEC standard, the DH1000 test takes 2 months to produce t...

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): H01L21/66H01L31/20
CPCH01L22/14H01L31/208H01L31/202Y02E10/50Y02P70/50
Inventor 孟凡英刘正新赵文婕韩安军
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com