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Bal Seal Engineering
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Race-Tested Spring Improves Performance of Electric and Hybrid Vehicles
Component is said to allow for more efficient design of advanced EV and HV systems
FOOTHILL RANCH, Calif. — Designers of consumer electric and hybrid vehicles are taking a page from the racing playbook, and using Bal Spring™ canted coil springs to improve vehicle efficiency, performance, and reliability.
The Bal Spring, offered by Bal Seal Engineering, Inc., mechanically fastens, conducts electricity, and shields sensitive electronics from the harmful effects of electromagnetic and radiofrequency interference (EMI/RFI). Although it enjoyed early adoption in high-end F1/FE platforms, the spring is now used in advanced production electric vehicle (EV) and hybrid vehicle (HV) applications, including power management, regenerative braking, steering, infotainment, and driver information systems.
“With their unique mechanical and electrical properties, our canted coil springs allow for more efficient design of regenerative braking and energy recovery systems that can capture the vehicle’s momentum and turn it into electricity that recharges the onboard battery as the vehicle is slowing down or stopping,” said Roland Reichert, global market manager for automotive for Bal Seal Engineering, in a company release. “Together with industry design engineers, we’re using these innovative springs to accelerate advances in racing and EV technology.”
As an electrical contact element, the Bal Spring effectively manages high, medium, and low current with minimal heat rise. The spring’s highly conductive properties and unique design also enable it to provide superior shielding against EMI/RFI, particularly in high-frequency, small-package applications. Its independent coils compensate for misalignment and surface irregularities, ensuring optimal charging efficiency and current transmission — even under shock and vibration, the company says.
In mechanical fastening applications, the Bal Spring latches, locks, or holds with forces that can be precisely controlled to meet most connection requirements. The spring resists compression set and can withstand thousands of insertion and removal cycles. Bal Seal Engineering is a major global provider of custom-engineered sealing, connecting, conducting, and EMI/RFI shielding and grounding products and services.
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