Charged EVs | ENNOVI patents adhesive-free lamination for battery cell contacting systems

ENNOVI has secured a German patent for its adhesive-free lamination technology for battery cell contacting systems (CCS). The laser-based process eliminates the adhesives used in conventional hot and cold lamination, and the company says the technology is already validated—meaning OEMs can adopt it without having to prove out the manufacturing process themselves.

CCS components connect and integrate individual cells within a battery module, typically combining busbars, voltage sense lines and the physical laminate layers that hold them together. Conventional CCS lamination bonds those layers using adhesives in hot or cold press processes. ENNOVI’s laser lamination achieves the same bond without adhesive material. The technology supports cylindrical, prismatic and soft pouch cell architectures. With this patent, ENNOVI now offers three lamination options (hot, cold and adhesive-free) for its CCS designs, giving battery engineers a process choice matched to their cell format.

The patent’s main commercial argument is risk reduction. Developing a new lamination process in-house takes time and carries qualification uncertainty; using a pre-validated, patented technology lets engineering teams skip that work. ENNOVI supports co-development and tailored engineering engagement, which it says allows OEM partners to maintain control over their product roadmaps.

The technology was developed at ENNOVI’s Advanced Solutions Engineering Center in Neckarsulm, which includes prototyping, testing and R&D capabilities. The facility holds ISO 9001:2015 and TISAX certifications—the latter covering automotive supply chain data security requirements.

“Automotive OEMs and battery manufacturers can design in the unique features of adhesive-free lamination, reduce engineering risk by using a technology that is already validated, rather than reinventing it,” said Randy Tan, Product Portfolio Director for Energy Systems at ENNOVI.

Source: ENNOVI