ENNOVI has introduced ENNOVISealTech, a patent-pending busbar sealing technology designed to prevent coolant leaks in electric and hybrid vehicle drivetrains. This innovation aims to improve manufacturing efficiency and design flexibility compared to traditional methods. ENNOVISealTech can be applied to busbars or other interconnects, accommodating various applications such as motors, inverters, and oil pump interfaces.
The technology addresses the challenges of managing busbar interfaces in electric vehicles (EVs), where coolant is present on one side and a dry, electrically robust connection is required on the other. Dominik Pawlik, Product Portfolio Director for Power Interconnects at ENNOVI, explained that conventional methods like potting or rubber O-rings incur high costs and time for secondary processes, as well as potential leakage issues over time. ENNOVISealTech overcomes these limitations by offering two sealing methods: double-walled shrink tubes and adhesive tape, both of which eliminate post-processing.
ENNOVISealTech undergoes rigorous testing to ensure it meets design requirements, including thermal ageing at 150°C for 1,000 hours and thermal shock cycling from -40°C to 150°C for 600 cycles. A leak test is also conducted to verify sealing integrity. The technology is compatible with various metals and plastics, including copper, aluminium, and polycarbonate, allowing it to adapt to different busbar shapes and specifications.
ENNOVI continues to leverage its expertise in electromechanical engineering and high-precision manufacturing to support EV original equipment manufacturers (OEMs) and suppliers in bringing innovative solutions to market.
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