Backup relay cut control system
First Claim
1. In a vehicle having an ignition system for selectively starting and stopping an engine of the vehicle and an electrical system including an electrical load and a battery, a battery protection system connected to the vehicle ignition system comprising:
- a first device connected between the battery and the load to protect the load from receiving excessive current;
a second device connected in series with the first device, the second device having a closed state and an open state to selectively connect and disconnect respectively the load to and from the battery; and
a counter connected to the ignition system to count a number of ignition cycles; and
a controller connected to said second device to thereby control the operation of the second device in response to the number of ignition cycles from the controller, the controller having a first threshold number store therein,wherein the controller obtains the number of ignition cycles from the counter and compares the number of ignition cycles to the first threshold number, andwherein the controller controls the second device to operate in the closed state to connect the battery to the load until the number of ignition cycles is greater than the first threshold number.
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Accused Products
Abstract
A battery protection system is provided in a vehicle having an ignition system for selectively starting and stopping an engine of the vehicle and an electrical system including an electrical load and a battery that selectively delivers electric current to said load via a first device that protects said load from receiving excessive current. The battery protection system includes: a second device that selectively connects and disconnects the load from the battery; and a controller that controls said second device in response to a detected number of ignition cycles.
74 Citations
15 Claims
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1. In a vehicle having an ignition system for selectively starting and stopping an engine of the vehicle and an electrical system including an electrical load and a battery, a battery protection system connected to the vehicle ignition system comprising:
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a first device connected between the battery and the load to protect the load from receiving excessive current; a second device connected in series with the first device, the second device having a closed state and an open state to selectively connect and disconnect respectively the load to and from the battery; and a counter connected to the ignition system to count a number of ignition cycles; and a controller connected to said second device to thereby control the operation of the second device in response to the number of ignition cycles from the controller, the controller having a first threshold number store therein, wherein the controller obtains the number of ignition cycles from the counter and compares the number of ignition cycles to the first threshold number, and wherein the controller controls the second device to operate in the closed state to connect the battery to the load until the number of ignition cycles is greater than the first threshold number. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery protection system connected to a vehicle ignition system comprising:
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a first device connected between a battery and a load to protect the load from receiving excessive current; a second device connected in series with the first device and having a closed state and an open state to selectively connect and disconnect respectively the battery to and from the load; a counter connected to the ignition system to count a number of ignition cycles; and a controller connected to the second device to thereby control the operation of the second device in response to the number of ignition cycles from the counter, the controller having a first threshold number stored therein, wherein the controller obtains the number of ignition cycles from the counter and compares the number of ignition cycles to the first threshold number, wherein if the number of ignition cycles is less than the first threshold number the controller controls the second device to operate in the closed state, wherein if the number of ignition cycles is greater than the first threshold number the controller controls the second device to operate in the open state thereby disconnecting the battery from the load, and wherein after the controller detects that the number of ignition cycles is greater than the first threshold number the controller is disabled to thereby prevent inadvertent disconnection of the load from the battery when the second device is reset to a closed state. - View Dependent Claims (8, 9, 10)
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11. A method of protecting a battery connected to a vehicle ignition system comprising:
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providing a first device connected between a battery and a load, a second device connected in series with the first device and having a closed state and an open state, and a controller connected to the second device to thereby control the operation of the second device, the controller having a first threshold number stored therein; counting a number of ignition cycles; comparing the number of ignition cycles to the first threshold number; closing the second device if the number of ignition cycles is less than the first threshold number; and connecting the battery to the load until the number of ignition cycles is greater than the first threshold number. - View Dependent Claims (12, 13, 14, 15)
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Specification