High voltage shut down system and method for electric vehicle
First Claim
1. A system for shutting down a high voltage for an electric vehicle, comprising:
- a memory configured to store program instructions;
a first power supply controller electrically connected to a first power supply relay;
a second power supply controller electrically connected to a second power supply relay activated in connection with an operation of the first power supply relay to supply power to the second power supply controller;
a battery charger electrically connected to the second power supply controller via the second power supply relay such that the second power supply controller is activated using the battery charger;
a collision detection unit electrically connected to the third power supply controller;
a high voltage controller electrically connected to the collision detection unit; and
a controller configured to execute the program instructions, the program instructions when executed configured to;
operate the collision detection unit configured to detect a collision occurring while charging a vehicle; and
operate the high voltage controller configured to shut down a first voltage when a collision is detected by the collision detection unit, andwherein the program instructions when executed are further configured to;
operate the first power supply controller which becomes operable for transmitting power when the vehicle starts;
operate an airbag configured to receive power via the first power supply controller; and
operate an event data recorder (EDR) configured to receive power via the first power supply controller, andwherein the airbag is connected to the first power supply controller when the vehicle starts, and is selectively connected to the second power supply controller while the vehicle is being charged.
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Accused Products
Abstract
A high voltage shut down system and method for an electric vehicle are provided, which perform a high voltage shut down function in connection with a collision detection signal (airbag expansion signal) generated from an airbag controller even when a vehicle is being charged. The high voltage shut down system a third power supply controller which is in an operable state for transmitting power when the vehicle starts and is charged. An airbag control unit is operated by receiving power through the third power supply controller, and is configured to generate an airbag expansion signal when detecting an occurrence of a collision of the vehicle. A high voltage controller is configured to perform a high voltage shut down function in response to receiving the airbag expansion signal.
10 Citations
13 Claims
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1. A system for shutting down a high voltage for an electric vehicle, comprising:
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a memory configured to store program instructions; a first power supply controller electrically connected to a first power supply relay; a second power supply controller electrically connected to a second power supply relay activated in connection with an operation of the first power supply relay to supply power to the second power supply controller; a battery charger electrically connected to the second power supply controller via the second power supply relay such that the second power supply controller is activated using the battery charger; a collision detection unit electrically connected to the third power supply controller; a high voltage controller electrically connected to the collision detection unit; and a controller configured to execute the program instructions, the program instructions when executed configured to; operate the collision detection unit configured to detect a collision occurring while charging a vehicle; and operate the high voltage controller configured to shut down a first voltage when a collision is detected by the collision detection unit, and wherein the program instructions when executed are further configured to; operate the first power supply controller which becomes operable for transmitting power when the vehicle starts; operate an airbag configured to receive power via the first power supply controller; and operate an event data recorder (EDR) configured to receive power via the first power supply controller, and wherein the airbag is connected to the first power supply controller when the vehicle starts, and is selectively connected to the second power supply controller while the vehicle is being charged. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of shutting down a high voltage for an electric vehicle, comprising:
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operating, by a controller, a second power supply controller through a battery charger when a vehicle is charged; operating, by the controller, the second power supply controller to supplying power to an airbag controller; and operating, by the controller, a high voltage controller, to shut down a first voltage in connection with an airbag expansion signal generated when the airbag controller detects a collision of the vehicle, wherein the second power supply controller is electrically connected to a second power supply relay; and
the second power supply relay is electrically connected to the battery charger such that the second power supply controller is electrically connected to the battery charger and activated using the battery charger, andwherein a first power supply controller is operable together with the second power supply controller when the vehicle starts, the method further comprising; shutting down, by the first power supply controller, a first voltage; and operating, by the first power supply controller, an airbag and an EDR using power received through the first power supply controller when the airbag expansion signal is generated. - View Dependent Claims (12, 13)
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Specification