System for controlling charge/discharge of secondary battery, battery controller, and computer-readable medium
First Claim
1. A system for controlling charging/discharging of a secondary battery comprising:
- a power level calculating section for calculating an actual loading power level of a secondary battery;
a differential calculating section for calculating a differential power level between the calculated actual loading power level and an allowable power level achieved during charging/discharging of the secondary battery; and
an allowable power level control section for measuring a number of times the calculated differential power level has become equal to or lower than a predetermined threshold value and downwardly revising the allowable power level when a count has become equal to or greater than a predetermined upper-limit value.
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Accused Products
Abstract
In a charging/discharging control system for controlling an allowable power level of a secondary battery at the time of charging/discharging operations, excessive discharging or recharging of the secondary battery is prevented, and excessive suppression of the charging/discharging of the secondary battery is prevented. A vehicle ECU controls charging/discharging of the secondary battery in accordance with a predetermined allowable power level. A battery ECU detects an actual loading power level of a secondary battery; calculates a differential power level between the detected actual loading power level and an allowable power level; measures the number of times the calculated differential power level has become equal to or lower than a predetermined threshold value; and downwardly revises the allowable power level when the count has become equal to or greater than a predetermined upper-limit level.
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Citations
17 Claims
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1. A system for controlling charging/discharging of a secondary battery comprising:
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a power level calculating section for calculating an actual loading power level of a secondary battery; a differential calculating section for calculating a differential power level between the calculated actual loading power level and an allowable power level achieved during charging/discharging of the secondary battery; and an allowable power level control section for measuring a number of times the calculated differential power level has become equal to or lower than a predetermined threshold value and downwardly revising the allowable power level when a count has become equal to or greater than a predetermined upper-limit value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery controller for adaptively setting an allowable power level of a secondary battery subjected to charging/discharging control within a range of charging/discharging capability in accordance with the allowable power level set according to at least a temperature, the controller comprising:
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a power level calculating section for calculating an actual loading power level of the secondary battery; a differential calculating section for calculating a differential power level between a calculated actual loading power level and the allowable power level; and an allowable power level control section for measuring the number of times the calculated differential power level has become equal to or lower than a predetermined threshold level and downwardly revising the allowable power level when a count has become equal to or greater than a predetermined upper-limit level.
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11. A system for controlling charging/discharging of a secondary battery comprising:
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a power level calculating section for calculating an actual loading power level of a secondary battery; a differential calculating section for calculating a differential power level between the calculated actual loading power level and an allowable power level achieved during charging/discharging of the secondary battery; and an allowable power level control section for, when the calculated differential power level has become equal to or lower than a predetermined threshold level and also the actual loading power level surpasses the allowable power level, downwardly revising the allowable power level by a greater amount of downward revision as the differential power level is greater.
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12. A battery controller for adaptively setting an allowable power level of a secondary battery subjected to charging/discharging control within a range of charging/discharging capability in accordance with the allowable power level set according to at least a temperature, the controller comprising:
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a power level calculating section for calculating an actual loading power level of the secondary battery; a differential calculating section for calculating a differential power level between a calculated actual loading power level and the allowable power level; and
,an allowable power level control section for, when the calculated differential power level has become equal to or lower than a predetermined threshold value level and also the actual loading power level surpasses the allowable power level, downwardly revising the allowable power level by a greater amount of downward revision as the differential power level is greater.
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13. A system for controlling charging/discharging of a secondary battery comprising:
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an allowable level setting section for setting an allowable power level of the secondary battery according to at least one of a battery temperature, a state of charge, and a battery voltage of the secondary battery; and a charging/discharging control section for controlling charging/discharging of the secondary battery according to the allowable power level, the section allowing charging/discharging operations exceeding the allowable power level before the number of times an actual loading power level of the secondary battery has exceeded the allowable power level reaches a predetermined number of times, and controlling charging/discharging of the secondary battery in accordance with a second allowable power level which is lower than the allowable power level when the number of times has reached the predetermined number of times. - View Dependent Claims (14, 15)
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16. A computer-readable medium into which is stored a program for causing a computer to perform processing for adaptively setting an allowable power level of a secondary battery subjected to charging/discharging control within a range of charging/discharging capability, the processing comprising:
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calculating an actual loading power level of the secondary battery; calculating a differential power level between a calculated actual loading power level and the allowable power level; and measuring the number of times the calculated differential power level has become equal to or lower than a predetermined threshold level and downwardly revising the allowable power level when a count has become equal to or greater than a predetermined upper-limit level.
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17. A computer-readable medium into which is stored a program for causing a computer to perform processing for controlling charging/discharging of a secondary battery within a range of charging/discharging capability in accordance with an allowable power level, the processing comprising:
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setting an allowable power level of the secondary battery according to at least one of a battery temperature, a state of charge, and a battery voltage of the secondary battery; and allowing charging/discharging operations exceeding the allowable power level before the number of times an actual loading power level of the secondary battery has exceeded the allowable power level reaches a predetermined number of times, and controlling charging/discharging of the secondary battery in accordance with a second allowable power level which is lower than the allowable power level when the number of times has reached the predetermined number of times.
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Specification