Dual bipolar magnetic field for rotary high-voltage contactor in automotive lithium-ion battery systems
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 19, 2012
app pub date -
May 23, 2011
filing date -
May 23, 2011
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
A device and method for operating automotive battery system relays and related switches. By aligning a magnetic field with a direction of current flow in a contact plate disposed between magnets that are producing the field, a generated Lorentz force can be used to promote arc extinguishing during a relay opening sequence, while simultaneously reducing the tendency of the Lorentz forces to interfere with the operation of a solenoid or other switch-activating mechanisms. By using a rotary-based mechanism to establish contact between a contact plate and current-carrying terminals, the likelihood of inadvertent opening of the relay is reduced. Such devices and methods may be used in conjunction with hybrid-powered and electric-powered vehicles.
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