Case study of photovoltaic energy storage cell bonding: High performance application of PUR 1655 multifunctional polyurethane adhesive

With the large-scale application of photovoltaic and energy storage systems, the bonding and fixing process of battery cells as the core of energy storage battery systems is increasingly valued by the industry. Especially in the integration process of large battery modules, it is not only required that the adhesive has high-strength adhesion, but also multiple performance indicators such as waterproof, dustproof, anti-aging, and environmental protection should be taken into account. In practical applications, many conventional sealants face problems such as poor coating adaptability, narrow bonding range, strong odor, and inconvenient construction, which seriously affect the reliability and manufacturing efficiency of energy storage systems. Adhesive bonding of photovoltaic energy storage cells To address the above challenges, this article will share the application case of ELAPLUS multifunctional polyurethane sheet metal sealant PUR 1655 in the “photovoltaic energy storage cell bonding and fixation” project, analyze its outstanding performance in complex environments, and provide reliable material solutions for new energy enterprises.1、 Project background: Challenges faced by battery cell bondingIn an energy storage system, the arrangement of battery cells is usually a regular parallel or stacked layout, which is then packaged into battery modules. The entire module needs to go through the following operational challenges:High requirements for structural bonding strength: During transportation and use, battery cells need to withstand vibration and thermal shock. Colloids must have high modulus and bonding strength to avoid loosening and detachment.High long-term aging resistance requirements: Photovoltaic energy storage systems typically have a service life of over 10 years, and outdoor installations require colloids to not age or crack in environments such as ultraviolet radiation, humidity, rain, and snow.High requirements for process friendliness: When producing in large quantities, it is required that the colloid is easy to operate, easy to apply, free of primer, fast to apply, and compatible with coating…