Ennovi optimises EV battery module cell contacting system design
Ennovi a mobility electrification solutions partner, introduces an innovative cell contacting system (CCS) lamination approach. Ennovi has qualified polyethylene terephthalate (PET) insulation foils and adhesives from multiple suppliers by testing them for their bond strength, durability, and environmental impact. As a result of this research, Ennovi has a database of recommendations for the most effective material combinations, bypassing the trial-and-error approach that has long been a staple of the industry.
Historically, the assembly of the CCS on battery cells has relied on cumbersome methods, including moulded plastic trays and foams for positioning. While effective for positioning the cells and collectors, these methods introduce unnecessary weight and complexity, especially as module sizes increase. Recognising the limitations of traditional practices, Ennovi has pioneered the use of both hot and cold lamination processes, eliminating the need for these trays or foams. By recommending lamination material combinations, the company offers OEMs and Tier 1 suppliers a streamlined, more adaptable solution.
“Our move towards lamination signifies a major leap in our ability to position collectors with precision, without the mechanical constraints imposed by conventional methods,” Till Wagner, Product Manager for Energy Systems at Ennovi, explains. “By curating a database of pre-tested PET foils and adhesives, we not only accelerate CCS design but also simplify the assembly process, opening up new possibilities for material and energy savings.”
The implications of Ennovi’s lamination advancements are far-reaching. The company’s ability to offer hot or cold lamination processes positions it uniquely in the market, providing enhanced flexibility and efficiency to global OEMs and Tier 1 suppliers. By optimising the selection of PET foils and adhesives, Ennovi is improving the structural integrity and lifespan of EV battery modules and reducing manufacturing cycle times and environmental footprint.
