POWER SUPPLY SYSTEM, VEHICLE PROVIDED WITH THE SAME AND CONTROL METHOD OF POWER SUPPLY SYSTEM
First Claim
1. A power supply system comprising:
- a plurality of power storage mechanisms allowing charging and discharging;
a charger for receiving a power from an external power supply and externally charging said plurality of power storage mechanisms;
a state-estimating unit for estimating a remaining capacity of each of said plurality of power storage mechanisms; and
a control unit for controlling the charging of said plurality of power storage mechanisms, whereinsaid control unit includes;
a charging unit for charging said plurality of power storage mechanisms with a charge current supplied from said charger when said plurality of power storage mechanisms attain a state allowing the charging by the external power supply,a charge-allowed power deriving unit for deriving a charge-allowed power of each of said plurality of power storage mechanisms based on the estimated remaining capacity while said plurality of power storage mechanisms are being externally charged,a first determining unit for determining a relationship in magnitude between a charge-allowed power total value being a total value of the derived charge-allowed powers of the respective power storage mechanisms and a predetermined preset value, anda charge ending unit for ending the external charging of said plurality of power storage mechanisms when said first determining unit determines that said charge-allowed power total value is equal to or smaller than said predetermined value.
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Accused Products
Abstract
A power supply system includes power storage units formed of battery assemblies, respectively, converters corresponding to the power storage units, respectively, and a charger receiving an electric power from an external power supply for externally charging the power storage units. An ECU estimates an SOC of each power storage unit based on the SOC of a battery block of the smallest SOC in the power storage unit. When the power storage unit attains a state allowing charging by the external power supply, the ECU controls the corresponding converter to charge the power storage unit with the charge current supplied from the charger, and derives, for each power storage unit, a charge-allowed power based on the SOC of the battery block of the largest SOC. When a total value of the derived charge-allowed powers of the respective power storage units is equal to or smaller than an actual value of the supply power supplied from the external power supply, the ECU ends the external charging of the power storage units.
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Citations
19 Claims
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1. A power supply system comprising:
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a plurality of power storage mechanisms allowing charging and discharging; a charger for receiving a power from an external power supply and externally charging said plurality of power storage mechanisms; a state-estimating unit for estimating a remaining capacity of each of said plurality of power storage mechanisms; and a control unit for controlling the charging of said plurality of power storage mechanisms, wherein said control unit includes; a charging unit for charging said plurality of power storage mechanisms with a charge current supplied from said charger when said plurality of power storage mechanisms attain a state allowing the charging by the external power supply, a charge-allowed power deriving unit for deriving a charge-allowed power of each of said plurality of power storage mechanisms based on the estimated remaining capacity while said plurality of power storage mechanisms are being externally charged, a first determining unit for determining a relationship in magnitude between a charge-allowed power total value being a total value of the derived charge-allowed powers of the respective power storage mechanisms and a predetermined preset value, and a charge ending unit for ending the external charging of said plurality of power storage mechanisms when said first determining unit determines that said charge-allowed power total value is equal to or smaller than said predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A control method of a power supply system, wherein
said power supply system includes: -
a plurality of power storage mechanisms allowing charging and discharging, a charger for receiving a power from an external power supply and externally charging said plurality of power storage mechanisms, and a state-estimating unit for estimating a remaining capacity of each of said plurality of power storage mechanisms; and said control method comprises the steps of; charging said plurality of power storage mechanisms with a charge current supplied from said charger when said plurality of power storage mechanisms attain a state allowing the charging by the external power supply; deriving a charge-allowed power of each of said plurality of power storage mechanisms based on the estimated remaining capacity while said plurality of power storage mechanisms are being externally charged; determining a relationship in magnitude between a charge-allowed power total value being a total value of the derived charge-allowed powers of the respective power storage mechanisms and a predetermined preset value; and ending the external charging of said plurality of power storage mechanisms when said determining step determines that said charge-allowed power total value is equal to or smaller than said predetermined value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 19)
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Specification