Boosting Battery Cycle Life

Cell caps ensure long battery life

To boost the safety and performance of electric vehicles, Freudenberg Sealing Technologies offers custom-designed cell caps, developed in collaboration with cell manufacturers. All necessary functions are integrated, including rupture disks that dissipate escaping gases in case of a thermal runaway of the cell. These are manufactured on site for the local market with the lowest possible carbon footprint and in accordance with automotive standards such as IATF 16949.

“In these customer projects, we combine state-of-the-art materials with intelligent design and merge our expertise in sealing technology and engineering plastics with our knowledge of stamping technology. This allows us to set new standards to ensure perfect sealing and a long cycle life for the cell caps,” says Giulia Richard, Global Marketing Director at Freudenberg Sealing Technologies.

Cell caps that are welded to the inner electrodes effectively seal and insulate the battery cells. Freudenberg Sealing Technologies’ cell caps are tested to be absolutely gas-tight and maintain this capacity throughout the cycle life of the battery. This ensures optimum performance under a wide range of operating conditions, minimizes the risk of gas leakage and increases safety. In addition, the cell caps have exceptional mechanical resistance to peak loads and fatigue. Their compatibility with various electrolytes, any coolants from outside and gases enables seamless integration into different electric vehicle systems. All materials used have been electrochemically tested.

“Mobility is changing, and Freudenberg Sealing Technologies is staying ahead of the curve. As the market leader in the technology, quality and service segments for the automotive sector, we have all the expertise necessary to develop and manufacture innovative and leading-edge products for the mobility of the future,” emphasizes Ulrich Huth, President Automotive Sales at Freudenberg Sealing Technologies.