Managing service life of a battery
First Claim
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1. Method for limiting battery power comprising:
- providing an amp-hour threshold;
monitoring amp-hour throughput;
determining a moving average amp-hour throughput from said monitored amp-hour throughput;
when the moving average amp-hour throughput exceeds said amp-hour threshold, establishing a battery power limit as a function of the moving average amp-hour throughput; and
limiting battery power in accordance with said established battery power limit.
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Abstract
A hybrid electric vehicle has an energy storage system including one or more batteries. Battery service life is managed by establishing an amp-hour throughput budget and limiting battery current substantially to the budget.
40 Citations
13 Claims
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1. Method for limiting battery power comprising:
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providing an amp-hour threshold; monitoring amp-hour throughput; determining a moving average amp-hour throughput from said monitored amp-hour throughput; when the moving average amp-hour throughput exceeds said amp-hour threshold, establishing a battery power limit as a function of the moving average amp-hour throughput; and limiting battery power in accordance with said established battery power limit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Method for establishing limits on battery power, comprising:
- determining battery throughput as a moving average of amp-hour throughput;
comparing said battery throughput to a predetermined amp-hour threshold related to a battery life target; and
when the battery throughput exceeds said amp-hour threshold, providing a battery power limit as a function of amp-hour throughput effective to reduce the battery throughput. - View Dependent Claims (8, 9, 10, 11, 12, 13)
- determining battery throughput as a moving average of amp-hour throughput;
Specification