Battery management system and battery replacement method
First Claim
Patent Images
1. A battery management system comprising:
- a surface pressure sensor configured to measure a surface pressure of a vehicle-mounted secondary battery for driving a vehicle with a lapse of time; and
a computing unit configured to;
(i) calculate a high-rate driving frequency coefficient at intervals of a predetermined period based on the surface pressure measured by the surface pressure sensor, the high-rate driving frequency coefficient being an index of a frequency of high-rate driving;
(ii) derive a high-rate driving frequency based on a number of times that the calculated high-rate driving frequency coefficient has exceeded a predetermined threshold; and
(iii) select a replacement battery from among batteries including a high-power battery based on the derived high-rate driving frequency.
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Abstract
A battery management system includes: measuring a surface pressure of a vehicle-mounted secondary battery (battery cell) for driving the vehicle with a lapse of time; calculating a high-rate driving frequency coefficient on the basis of the measured surface pressure at intervals of a predetermined period (24 hours); deriving a high-rate driving frequency on the basis of the number of times that the calculated high-rate driving frequency coefficient has exceeded a predetermined threshold; and selecting a replacement battery from among batteries including a high-power battery on the basis of the derived high-rate driving frequency.
6 Citations
12 Claims
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1. A battery management system comprising:
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a surface pressure sensor configured to measure a surface pressure of a vehicle-mounted secondary battery for driving a vehicle with a lapse of time; and a computing unit configured to; (i) calculate a high-rate driving frequency coefficient at intervals of a predetermined period based on the surface pressure measured by the surface pressure sensor, the high-rate driving frequency coefficient being an index of a frequency of high-rate driving; (ii) derive a high-rate driving frequency based on a number of times that the calculated high-rate driving frequency coefficient has exceeded a predetermined threshold; and (iii) select a replacement battery from among batteries including a high-power battery based on the derived high-rate driving frequency. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery replacement method comprising:
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measuring, with a surface pressure sensor, a surface pressure of a vehicle-mounted secondary battery for driving a vehicle with a lapse of time; calculating, with a computing unit, a high-rate driving frequency coefficient at intervals of a predetermined period based on the measured surface pressure, the high-rate driving frequency coefficient being an index of a frequency of high-rate driving; deriving, with the computing unit, a high-rate driving frequency based on a number of times that the calculated high-rate driving frequency coefficient has exceeded a predetermined threshold; and selecting, with the computing unit, a replacement battery from among batteries including a high-power battery based on the derived high-rate driving frequency. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification