Battery assembly system and electric-motor vehicle system using the same
First Claim
1. A battery assembly system comprising:
- a battery assembly comprising a plurality of storage batteries connected in series,a voltage detector for detecting respective voltages generated in the storage batteries constituting the battery assembly,a current detector for detecting a current flowing in the plurality of storage batteries,a state-of-charge (SOC) calculator for calculating the state of charge (SOC) of the storage batteries, based on the voltages detected by the voltage detectors, respectively and the current detected by the current detector,a charging/discharging unit for charging or discharging one of the plurality of storage batteries so as to equalize the SOC of the storage batteries calculated by the SOC calculator, respectively, anda deviation judging unit for judging whether a maximum value of the deviation of the SOC of each storage battery calculated by the SOC calculator exceeds a predetermined value,wherein the charging/discharging unit is capable of being connected selectively to each of the plurality of storage batteries, andwhen the deviation judging unit judges that the maximum value of the deviation of the SOC of each storage battery exceeds the predetermined value, the charging/discharging unit charges or discharges at least one of the plurality of storage batteries.
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Abstract
The battery assembly system 100 includes a battery assembly including a plurality of storage batteries C1 to Cn connected in series, a voltage detector 3 for detecting respectively voltages generated in the storage batteries, a current detector 4 for detecting a current flowing in the plurality of storage batteries, a state-of-charge (SOC) calculator 2 for calculating the state of charge (SOC) of the storage batteries, respectively, based on the voltages detected respectively by the voltage detectors 3 and the current detected by the current detector 4, and a charging/discharging unit 1 for charging or discharging at least one of the plurality of storage batteries so as to equalize the SOC of the storage batteries calculated respectively by the SOC calculator 2.
45 Citations
9 Claims
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1. A battery assembly system comprising:
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a battery assembly comprising a plurality of storage batteries connected in series, a voltage detector for detecting respective voltages generated in the storage batteries constituting the battery assembly, a current detector for detecting a current flowing in the plurality of storage batteries, a state-of-charge (SOC) calculator for calculating the state of charge (SOC) of the storage batteries, based on the voltages detected by the voltage detectors, respectively and the current detected by the current detector, a charging/discharging unit for charging or discharging one of the plurality of storage batteries so as to equalize the SOC of the storage batteries calculated by the SOC calculator, respectively, and a deviation judging unit for judging whether a maximum value of the deviation of the SOC of each storage battery calculated by the SOC calculator exceeds a predetermined value, wherein the charging/discharging unit is capable of being connected selectively to each of the plurality of storage batteries, and when the deviation judging unit judges that the maximum value of the deviation of the SOC of each storage battery exceeds the predetermined value, the charging/discharging unit charges or discharges at least one of the plurality of storage batteries. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery assembly system comprising:
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a battery assembly comprising a plurality of storage batteries connected in series, a voltage detector for detecting respective voltages generated in the storage batteries constituting the battery assembly, a current detector for detecting a current flowing in the plurality of storage batteries, a state-of-charge (SOC) calculator for calculating the state of charge (SOC) of the storage batteries, based on the voltages detected by the voltage detectors, respectively and the current detected by the current detector, a charging/discharging unit for charging or discharging one of the plurality of storage batteries so as to equalize the SOC of the storage batteries calculated by the SOC calculator, respectively, and a deterioration detector for detecting a storage battery with deteriorated performance among the plurality of storage batteries, wherein the charging/discharging unit is capable of being connected selectively to each of the plurality of storage batteries. - View Dependent Claims (8, 9)
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Specification