ENNOVI, a mobility electrification solutions partner, has introduced a new technology for sealing busbars to prevent coolant leakage in hybrid and electric vehicle (xEV) drivetrain applications.
ENNOVI-SealTech can be used with either busbars or other interconnects to accommodate applications such as motors, inverters, or oil pump interfaces.
ENNOVI-SealTech offers two sealing methods:
- Double-walled shrink tubes
- Adhesive tape for challenging applications.
Both eliminate post-processing, enhancing manufacturing efficiency and design flexibility without sacrificing sealing performance.
“Managing busbar interfaces in EVs where coolant is present on one side and a dry, electrically robust connection is required on the other side presents several challenges,” explained Dominik Pawlik, product portfolio director with Power Interconnects at ENNOVI. “Conventional sealing methods, such as potting or using rubber O-rings or gaskets, incur the high cost and time for secondary processes and/or issues with leakage over the lifetime of the assembly – ENNOVI-SealTech overcomes all these limitations.”
ENNOVI-SealTech technology is subjected to rigorous testing to ensure it meets the specific requirements of each design. Every configuration is validated through a comprehensive testing process, including thermal aging at 150° C for 1,000 hours, and thermal shock cycling from -40° to +150° C for 600 cycles (15 minutes per cycle), in accordance with the EN 60068-2 standard.
A leak test is also performed to verify sealing integrity.
The use of shrink tubing or tape allows ENNOVI-SealTech to adapt to virtually any busbar shape and design specification. Moreover, the technology is compatible with a wide range of metals and plastics, including copper (Cu), aluminum (Al), PA66, PBT, PC, and others.
Filed Under: Technology News