Automatic battery disconnect system
First Claim
1. A cutoff circuit for disconnecting a battery powering a vehicle electrical system from said electrical system, the vehicle electrical system comprising an electrical input and an electrical ground, the battery comprising a first terminal electrically connected to said input and a second terminal electrically connected to said ground, the battery cutoff circuit comprising:
- (a) a shock detector mounted on said vehicle adapted to provide a command upon detection of a predetermined impact force having a magnitude in excess of 50 lbs on said vehicle,(b) a latching cutoff switch interposed between said battery first terminal and said vehicle electrical system wherein said cutoff switch comprises a control device for switching said latching cutoff switch from a first latched state wherein said latching cutoff switch connects said battery first terminal to said electrical input to a second latched state wherein said latching cutoff switch disconnects said battery first terminal from said electrical input upon receipt of said command from said shock detector;
wherein;
(a) selected portions of said vehicle electrical system are directly connected to said battery first terminal bypassing said cut off switch; and
(b) the shock detector and said latching cutoff switch are both mounted adjacent said battery.
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Abstract
A safety battery disconnect system for disconnecting a vehicle battery from the electrical system of the vehicle when an impact exceeding a predetermined magnitude is detected while maintaining electrical power input from the battery to selected portions of the vehicle electrical system. The system includes a shock sensor connected to a latching switch interposed between the battery and the vehicle fused electrical input system and is preferably a unitary unit mounted on or in close proximity to the battery.
28 Citations
6 Claims
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1. A cutoff circuit for disconnecting a battery powering a vehicle electrical system from said electrical system, the vehicle electrical system comprising an electrical input and an electrical ground, the battery comprising a first terminal electrically connected to said input and a second terminal electrically connected to said ground, the battery cutoff circuit comprising:
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(a) a shock detector mounted on said vehicle adapted to provide a command upon detection of a predetermined impact force having a magnitude in excess of 50 lbs on said vehicle, (b) a latching cutoff switch interposed between said battery first terminal and said vehicle electrical system wherein said cutoff switch comprises a control device for switching said latching cutoff switch from a first latched state wherein said latching cutoff switch connects said battery first terminal to said electrical input to a second latched state wherein said latching cutoff switch disconnects said battery first terminal from said electrical input upon receipt of said command from said shock detector; wherein; (a) selected portions of said vehicle electrical system are directly connected to said battery first terminal bypassing said cut off switch; and (b) the shock detector and said latching cutoff switch are both mounted adjacent said battery. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification