At present, the usage volume of automobiles is increasing more and more. New energy electric vehicles represent a mainstream trend in solving issues such as energy, the environment, and urban transportation, and they are also a major direction for the future development of the automotive industry.

The power battery is the "heart" of a new energy vehicle, while the adhesive is the "muscle membrane tissue" that enables the "heart" to have sustained power. Currently, the wave of electrification is sweeping across the globe. The demand for power batteries is experiencing a "blowout" explosive growth, and the market scale of adhesives is also expanding simultaneously.

It is understood that for the CTP-structured battery packs used in new energy vehicles, the design eliminates or significantly reduces the intermediate module components, and instead uses a large amount of adhesive to connect and fix the battery cells. The application of these adhesives mainly has two major requirements: The first type is structural adhesive, which mainly focuses on structural bonding and also takes into account a certain heat conduction function; the second type is thermal conductive adhesive, which mainly focuses on thermal conductive bonding. The purpose of using the adhesive is to conduct the heat generated during the operation of the battery cells to the external heat dissipation components, achieving part of the functions of thermal management and also taking into account the requirements of structural bonding.

Structural adhesive refers to an adhesive that is applied to the bonding of stressed structural components, can withstand large dynamic and static loads, and can be used for a long time. It is used to join structural components such as metals, plastics, glass, and wood instead of forms like bolts, rivets, or welding, and it belongs to an adhesive that can withstand large loads for a long time and still has reliable performance.

Thermal conductive adhesive is mainly used to complete the heat conduction between battery cells and between battery cells and liquid cooling pipes. The specific usage forms of the adhesive include gaskets, potting, filling, etc.
The Use of Thermal Conductive Adhesive in the Battery Pack - Between Battery Cells