RECHARGEABLE BATTERY CONTROLLER AND METHOD FOR CONTROLLING OUTPUT OF RECHARGEABLE BATTERY
First Claim
1. A rechargeable battery controller for controlling output of a rechargeable battery mounted on a vehicle having a power source including an internal combustion engine, a starter motor for starting the internal combustion engine, and a vehicle controller, the rechargeable battery controller comprising:
- a control circuit connectable in communication with the vehicle controller, in which the control circuit sets an upper limit for discharge power output by the rechargeable battery in a set period of time and communicates the upper limit to the vehicle controller;
wherein the control circuit resets the upper limit to a value greater than or equal to a power value required to drive the starter motor when a first requirement in which power supply from the rechargeable battery to the starter motor is scheduled and a second requirement in which the upper limit is less than the power value required to drive the starter motor are both satisfied.
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Accused Products
Abstract
A rechargeable battery controller for controlling output of a rechargeable battery mounted on a vehicle having a power source including an internal combustion engine, a starter motor for starting the internal combustion engine, and a vehicle controller. The rechargeable battery controller includes a control circuit for setting an upper limit for discharge power output by the rechargeable battery in a set period of time and providing the upper limit to the vehicle controller. The control circuit is programmed to reset the upper limit to a value greater than or equal to a power value required to drive the starter motor when a first requirement in which power supply from the rechargeable battery to the starter motor is scheduled and a second requirement in which the upper limit is less than the power value required to drive the starter motor are both satisfied.
30 Citations
15 Claims
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1. A rechargeable battery controller for controlling output of a rechargeable battery mounted on a vehicle having a power source including an internal combustion engine, a starter motor for starting the internal combustion engine, and a vehicle controller, the rechargeable battery controller comprising:
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a control circuit connectable in communication with the vehicle controller, in which the control circuit sets an upper limit for discharge power output by the rechargeable battery in a set period of time and communicates the upper limit to the vehicle controller;
wherein the control circuit resets the upper limit to a value greater than or equal to a power value required to drive the starter motor when a first requirement in which power supply from the rechargeable battery to the starter motor is scheduled and a second requirement in which the upper limit is less than the power value required to drive the starter motor are both satisfied. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling output of a rechargeable battery mounted on a vehicle having a power source including an internal combustion engine, a starter motor for starting the internal combustion engine, and a vehicle controller, the method comprising the steps of:
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(a) setting an upper limit for discharge power output by the rechargeable battery in a set period of time and providing the upper limit to the vehicle controller;
(b) determining whether or not power supply from the rechargeable battery to the starter motor is scheduled;
(c) determining whether or not the set upper limit is less than a power value required to drive the starter motor;
(d) resetting the upper limit set in the step of setting to a value greater than or equal to the power value required to drive the starter motor when it is determined that power supply to the starter motor is scheduled and determined that the set upper limit is less that the power value required to drive the starter motor; and
(e) providing the vehicle controller with the upper limit set in the step of setting or the upper limit reset in the step of resetting. - View Dependent Claims (9, 10, 11)
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12. A computer program product comprising computer readable media encoded with program code for controlling output of a rechargeable battery mounted on a vehicle having a driving power source including an internal combustion engine, a starter motor for starting the internal combustion engine, and a vehicle controller, the program code when executed by a computer performing steps including:
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(a) setting an upper limit for discharge power output by the rechargeable battery in a set period of time and providing the upper limit to the vehicle controller;
(b) determining whether or not power supply from the rechargeable battery to the starter motor is scheduled;
(c) determining whether or not the set upper limit is less than a power value required to drive the starter motor;
(d) resetting the upper limit set in the step of setting to a value greater than or equal to the power value required to drive the starter motor when it is determined that power supply to the starter motor is scheduled and determined that the set upper limit is less that the power value required to drive the starter motor; and
(e) providing the vehicle controller with the upper limit set in the step of setting or the upper limit reset in the step of resetting. - View Dependent Claims (13, 14, 15)
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Specification