REMOTE HIGH VOLTAGE SWITCH FOR CONTROLLING A HIGH VOLTAGE HEATER LOCATED INSIDE A VEHICLE CABIN
First Claim
1. A cabin heater system for use in a motor vehicle of the type having a passenger cabin and an under hood compartment separated by a bulkhead, the cabin heater system comprising:
- a high voltage heater disposed in said passenger cabin;
a vehicle battery configured to supply power to said high voltage heater through a high voltage bus; and
a switch disposed in said under hood compartment;
wherein said switch is configured to selectively isolate said high voltage heater from said battery and said high voltage bus.
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Accused Products
Abstract
An electronic circuit is provided for electrically isolating a heater in a motor vehicle upon detection of a crash event. The circuit includes a high voltage convection heater mounted in a passenger compartment of the vehicle, a controller mounted in an under hood compartment of the vehicle, a battery, and a collision sensor configured to apply a crash signal to the controller upon detection of a crash event. The controller is configured to selectively electrically isolate the heater from the battery in response to the crash signal. The vehicle also includes a fresh air plenum on which the controller is mounted.
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Citations
23 Claims
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1. A cabin heater system for use in a motor vehicle of the type having a passenger cabin and an under hood compartment separated by a bulkhead, the cabin heater system comprising:
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a high voltage heater disposed in said passenger cabin; a vehicle battery configured to supply power to said high voltage heater through a high voltage bus; and a switch disposed in said under hood compartment; wherein said switch is configured to selectively isolate said high voltage heater from said battery and said high voltage bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electronic circuit for electrically isolating a heater in an electric vehicle, comprising:
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a high voltage convection heater mounted in a passenger compartment of said electric vehicle; a controller mounted in an under hood compartment of said electric vehicle; a battery; and a collision sensor configured to apply a crash signal to said controller upon detection of a crash event; wherein said controller is configured to selectively electrically isolate said heater from said battery in response to said crash signal. - View Dependent Claims (17, 18)
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19. A method for immediately terminating high voltage power to a convection heater disposed inside a cabin of a motor vehicle upon detection of a crash event, comprising:
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connecting, via a connecting cable, said convection heater to a high voltage bus disposed in an under hood compartment of said motor vehicle, wherein said cabin and said under hood compartment are separated by a dash bulkhead having an opening through which said connecting cable extends; interposing a control switch in series between said convection heater and said high voltage bus; sending a signal to said control switch from a crash detector upon detection of said crash event; and electrically isolating said convection heater from said high voltage bus upon receipt of said signal by said controller. - View Dependent Claims (20, 21, 22, 23)
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Specification