Analysis and Application Prospects of Conductive Adhesive Technology for Main Grid Battery Components

Brief introduction

With the rapid development of the photovoltaic industry, improving the conversion efficiency of photovoltaic modules, reducing production costs, and enhancing environmental adaptability have become the focus of industry attention. As the core component of the photovoltaic system, the electrical connection performance of the main grid cell module directly affects the power generation efficiency and reliability of the entire system.Conductive adhesiveAs an innovative connection technology, it has shown broad application prospects in main gate battery components with its unique advantages.

2、 Composition and working principle of conductive adhesive

Conductive adhesive is mainly composed of conductive fillers andInsulating polymer adhesiveform. Conductive fillers are mostly metal particles, such as silver (Ag), copper (Cu), nickel (Ni), etc. Among them, silver is the most commonly used material due to its high conductivity. The insulating polymer adhesive serves as the matrix, playing a role in bonding and supporting conductive particles. Under the action of temperature and pressure, the polymer matrix solidifies, and the conductive particles deform and come into contact with the conductor, forming a stable conductive path.

3、 Technical advantages of conductive adhesive

1. Low temperature curing: Compared to traditional welding processes, the curing temperature of conductive adhesive is usually lower than 180 ℃, effectively avoiding thermal damage to battery cells caused by high temperatures, reducing the risk of cracking, and reducing production energy consumption.

2. High conductivity: through optimizationconducting particlesThe content, shape, and distribution of conductive adhesive can achieve conductivity comparable to welding, and even surpass welding under certain conditions.

3. Environmentally friendly: Conductive adhesive does not contain toxic substances such as lead, which meets environmental requirements and reduces harm to the environment and operators.

4. Easy process: Conductive adhesive can be produced automatically through screen printing and other methods, improving production efficiency and flexibility.

5. Enhance component reliability: Battery components connected by conductive adhesive exhibit better stability in terms of thermal stress, mechanical impact, etc., extending the service life of the components.

4、 Application of Conductive Adhesive in Main Grid Battery Components

1. Alternative welding process: In the production of main grid battery components, conductive adhesive can completely replace traditional methodsWelding strip welding processTo achieve electrical connection of battery cells. This change not only simplifies the production process, but also improves the overall performance of the components.

2. Non main gate electrode design: With the advancement of technology, conductive adhesives have also been applied in the design of battery components without main gate electrodes, further reducing metal shielding and improving the photoelectric conversion efficiency of the components.

3. Improving component efficiency: The excellent conductivity and low resistance characteristics of conductive adhesive help reduce energy loss inside the component, thereby improving the power generation efficiency of the component.
   

5、 Challenges and Solutions Faced by Conductive Adhesive Technology

Although conductive adhesives have shown many advantages in main grid battery components, their high material costs and performance stability in certain extreme environments still need to be further addressed. Here are some possible solutions:

1. Reduce material costs: By optimizing the formula and preparation process of conductive fillers, the usage of precious metals such as silver can be reduced, while exploring new low-cost optionsconducting material.

2. Improving environmental adaptability: Strengthen research on the performance of conductive adhesives under extreme environmental conditions, such as high temperature, high humidity, radiation, etc. By improving material formulations and process parameters, enhance their stability and reliability in these environments.

3. Improve production process: Optimize the printing, curing and other production processes of conductive adhesive, improve production efficiency and product consistency, and reduce production costs.

6、 Conclusion and Prospect

Conductive adhesive, as an important connection technology in main grid battery modules, provides new ideas and methods for the manufacturing of photovoltaic modules with its unique advantages. With the continuous advancement of technology and the expansion of application fields, conductive adhesives will play a more important role in the future development of the photovoltaic industry. We have reason to believe that in the near future, conductive adhesive technology will drive the development of photovoltaic modules towards higher efficiency, environmental friendliness, and reliability.