Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process

A solar cell, high-efficiency technology, applied in the field of solar cells, can solve the problems of complex conductive backplane manufacturing process, affecting the overall performance of battery components, low production efficiency, etc., reducing electron collection distance, eliminating shading loss, and manufacturing costs. reduced effect

Active Publication Date: 2014-12-31
山西中来光能电池科技有限公司
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has the following defects: 1. The composite conductive backplane used is a composite conductive metal foil in the backplane, usually copper foil, and the copper foil needs to be laser etched or chemically etched
Since laser etching is still operable for simple patterns, the etching speed is slow and the production efficiency is low for complex patterns, while chemical etching requires pre-prepared complex-shaped and corrosion-resistant masks, environmental pollution and corrosive liquids on polymers. Substrate corrosion problems
Therefore, the manufacturing process of the conductive backplane manufactured in this way is complicated and the cost is extremely high.
2. It is necessary to punch the packaging material of the back layer of the solar cell so that the conductive adhesi

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
  • Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process
  • Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process
  • Main-grid-free high-efficiency back contact solar battery module, assembly and preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] see figure 1 , image 3 , Figure 4 , Figure 5 , a busbar-free, high-efficiency back-contact solar cell module provided in this embodiment, the solar cell module includes a battery sheet and an electrical connection layer 12, the backlight surface of the battery sheet has a P-type doped layer connected The P electrode and the N electrode connected to the N-type doped layer. The insulating layer between the P electrode and the N electrode is provided with a thermoplastic resin or a thermosetting resin, and the resin is ethylene-vinyl acetate copolymer, polyolefin resin, epoxy resin, polyurethane resin, acrylic resin, organic silicon Any of the resins, preferably ethylene-vinyl acetate copolymer in this embodiment, can prevent short circuits between electrodes.

[0078] see figure 1 , the battery sheet is N-type monocrystalline silicon substrate silicon, the P electrode is a dotted P electrode 52, the N electrode is a dotted N electrode 42, and the dotted P electrod...

Embodiment 2

[0095] see figure 2 , image 3 , Figure 4 , Figure 5 , a busbar-free, high-efficiency back-contact solar cell module provided in this embodiment, the solar cell module includes a battery sheet and an electrical connection layer 12, the backlight surface of the battery sheet has a P-type doped layer connected The P electrode and the N electrode connected to the N-type doped layer. The insulating layer between the P electrode and the N electrode is provided with a thermoplastic resin or a thermosetting resin, and the resin is ethylene-vinyl acetate copolymer, polyolefin resin, epoxy resin, polyurethane resin, acrylic resin, organic silicon Any of the resins, preferably ethylene-vinyl acetate copolymer in this embodiment, can prevent short circuits between electrodes.

[0096] see figure 1, the cell is an N-type monocrystalline silicon substrate silicon, the P electrode is a linear P electrode 51, the N electrode is a linear N electrode 41, and the linear P electrode 51 a...

Embodiment 3

[0113] see figure 1 , image 3 , Figure 4 , Figure 5 , a busbar-free, high-efficiency back-contact solar cell module provided in this embodiment, the solar cell module includes a battery sheet and an electrical connection layer 12, the backlight surface of the battery sheet has a P-type doped layer connected The P electrode and the N electrode connected to the N-type doped layer. The insulating layer between the P electrode and the N electrode is provided with a thermoplastic resin or a thermosetting resin, and the resin is ethylene-vinyl acetate copolymer, polyolefin resin, epoxy resin, polyurethane resin, acrylic resin, organic silicon Any of the resins, preferably acrylic resin in this embodiment, can prevent short circuits between electrodes.

[0114] see figure 1 , the battery sheet is N-type monocrystalline silicon substrate silicon, the P electrode is a dotted P electrode 52, the N electrode is a dotted N electrode 42, and the dotted P electrode 52 and the dotted...

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
Heightaaaaaaaaaa
Diameteraaaaaaaaaa
Widthaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of solar batteries, in particular to a main-grid-free high-efficiency back contact solar battery module, an assembly and a preparing process. The solar battery module comprises a battery piece and an electric connecting layer, wherein the back light side of the battery piece is provided with an electrode P connected with a P type doping layer and an electrode N connected with an N type doping layer. The solar battery module is characterized in that the electric connecting layer comprises a penetrating hole and a conducting wire, the conducting wire is respectively arranged at the front side and the back side of the electric connecting layer, the front side conducting wire is electrically connected with any one electrode, the back side conducting wire is electrically connected with the other electrode through conducting media in the through hole, and the electric connecting layer is made of insulation materials. The solar battery module, the assembly and the preparing process have the beneficial effect that the low-cost hidden-crack-resistant high-efficiency and high-stability solar battery assembly capable of preventing emitting electrode P and emitting electrode N short circuit is provided.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a busbar-free, high-efficiency back-contact solar cell module, assembly and a preparation process thereof. Background technique [0002] Energy is the material basis of human activities. With the continuous development and progress of human society, the demand for energy is increasing day by day. Traditional fossil energy is non-renewable energy and it is difficult to continue to meet the needs of social development. Therefore, research and utilization of new energy and renewable sources have become increasingly popular in countries around the world in recent years. Among them, solar power generation technology has the advantages of directly converting sunlight into electricity, simple use, environmental protection and pollution-free, high energy utilization rate, etc., and has received widespread attention. Solar power generation uses large-area P-N junction diodes to generate photo-...

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
IPC IPC(8): H01L31/046H01L31/0465H01L31/18
CPCH01L31/02008H01L31/02013Y02E10/50Y02P70/50
Inventor 林建伟夏文进孙玉海张育政
Owner 山西中来光能电池科技有限公司
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