Battery control apparatus
First Claim
1. A battery control apparatus comprising:
- battery temperature detecting device that detects a temperature of a battery;
a stage-of-charge determining device that determines a state of charge of the battery; and
a battery charge-discharge control device that controls charge-discharge of the battery;
wherein said battery charge-discharge control device is operable when the temperature of the battery detected by said battery temperature detecting device is equal to or less than a predetermined temperature and the state of charge of the battery determined by said state-of-charge determining device is equal to or greater than a threshold set in advance, for repeating charge and discharge of the battery such that the state of charge lies in a first predetermined range equal to or greater than the threshold.
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Accused Products
Abstract
There is provided a battery control apparatus that, when the battery temperature is low, repeats the charge and discharge of a battery on a short cycle such that the state of charge (SOC) of the battery lies in the range of 30 to 40% if the present SOC is less than 50%, and repeats the charge and discharge of the battery on a short cycle such that the SOC lies in the range of 50 to 60% if the present SOC is equal to or greater than 50%, thus increasing the temperature of the battery. Therefore, it is possible to increase the battery temperature in an efficient manner, and to prevent the available input-output power of the battery from being reduced due to a decrease in the battery temperature.
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Citations
14 Claims
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1. A battery control apparatus comprising:
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battery temperature detecting device that detects a temperature of a battery;
a stage-of-charge determining device that determines a state of charge of the battery; and
a battery charge-discharge control device that controls charge-discharge of the battery;
wherein said battery charge-discharge control device is operable when the temperature of the battery detected by said battery temperature detecting device is equal to or less than a predetermined temperature and the state of charge of the battery determined by said state-of-charge determining device is equal to or greater than a threshold set in advance, for repeating charge and discharge of the battery such that the state of charge lies in a first predetermined range equal to or greater than the threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle, comprising:
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a generator driven by an engine;
a motor for driving the vehicle;
a battery temperature detecting device that detects a temperature of a battery;
a stage-of-charge determining device that determines a state of charge of the battery; and
a battery charge-discharge control device that controls charge-discharge of the battery;
wherein said battery charge-discharge control device is operable when the temperature of the battery detected by said battery temperature detecting device is equal to or less than a predetermined temperature and the state of charge of the battery determined by said state-of-charge determining device is equal to or greater than a threshold set in advance, for repeating charge and discharge of the battery such that the state of charge lies in a first predetermined range equal to or greater than the threshold. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A battery charge-discharge control method for a vehicle comprising a battery temperature detecting device that detects a temperature of a battery, a state-of-charge determining device that determines a state of charge of the battery, a battery charge-discharge control device that controls the charge-discharge of the batter, a generator driven by an engine, and a motor that drives the vehicle, the method comprising the steps of:
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repeating charge and discharge of the battery such that the state of charge of the battery lies in a first predetermined range equal to or greater than a threshold set in advance when the temperature of the battery detected by said battery temperature detecting device is equal to or less than a predetermined temperature and the state of charge of the battery determined by said state-of-charge determining device is equal to or greater than the threshold; and
repeating charge and discharge of the battery such that the state of charge lies in a second predetermined range less than the threshold when the state of charge of the battery is less than the threshold.
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Specification