BATTERY MANAGEMENT SYSTEM AND OPERATING METHOD THEREOF
First Claim
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1. A battery management system (BMS), comprising:
- a measuring unit configured to measure a voltage of a battery;
a pulse applying unit configured to apply a current pulse to the battery, wherein the current pulse has a predetermined amplitude and period; and
a main controller unit (MCU) configured to i) calculate a polarization voltage based at least in part on the measured voltage and ii) estimate a state of health (SOH) of the battery based at least in part on the polarization voltage.
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Abstract
A battery management system (BMS) is disclosed. In one aspect, the BMS includes a measuring unit, a pulse applying unit and a main controller unit (MCU). The measuring unit measures the voltage of a battery. The pulse applying unit applies a current pulse to the battery, the current pulse having a predetermined amplitude and period. The MCU calculates a polarization voltage based on the measured voltage and estimates a state of health (SOH) of the battery using a polarization voltage.
25 Citations
20 Claims
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1. A battery management system (BMS), comprising:
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a measuring unit configured to measure a voltage of a battery; a pulse applying unit configured to apply a current pulse to the battery, wherein the current pulse has a predetermined amplitude and period; and a main controller unit (MCU) configured to i) calculate a polarization voltage based at least in part on the measured voltage and ii) estimate a state of health (SOH) of the battery based at least in part on the polarization voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a battery management system (BMS), comprising:
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measuring a first voltage of a battery; applying a current pulse, having a predetermined amplitude and period, to the battery; measuring a second voltage of the battery; calculating a polarization voltage based at least in part on the first and second voltages; and estimating a state of health (SOH) of the battery based at least in part on the polarization voltage. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A battery system, comprising:
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a battery; and a battery management system (BMS), wherein the BMS comprises; a voltage sensor configured to measure a voltage of the battery; a pulse applying unit configured to apply a current pulse to the battery; and a controller configured to i) calculate a polarization voltage based at least in part on the measured voltage and ii) estimate a state of health (SOH) of the battery based at least in part on the polarization voltage. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification