POWER SUPPLY SYSTEM AND VEHICLE WITH THE SYSTEM
First Claim
1. A power supply system supplying electric power to a load device mounted on a vehicle, comprising:
- a rechargeable power storage device;
a temperature detecting unit for detecting temperature of said power storage device;
a state estimating unit for estimating state of charge of said power storage device;
a charging unit for externally charging said power storage device by receiving electric power from an external power source; and
a control unit for controlling charging/discharging of said power storage device;
whereinsaid control unit includesa target value setting unit for setting, when said power storage device attains to a state ready for charging by the external power source, a target state of charge of said power storage device in accordance with the temperature of said power storage device, anda charge control unit for controlling charging power to said power storage device such that state of charge of said power storage device attains to said target state of charge.
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Accused Products
Abstract
A vehicle includes a charging unit receiving electric power from an external power source and externally charging a power storage unit. When a connector unit is coupled to the vehicle and a state ready for charging by the external power source is attained, a controller predicts degradation ratio of the power storage unit at the time point of completion of external charging based on degradation characteristic of the power storage unit in connection with SOC and battery temperature obtained in advance, and sets target state of charge of each power storage unit based on the battery temperatures so that the predicted degradation ratio does not exceed tolerable degradation ratio at the time point of completion of external charging. Then, the controller controls corresponding converters such that SOCs of power storage units attain the target states of charge.
118 Citations
14 Claims
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1. A power supply system supplying electric power to a load device mounted on a vehicle, comprising:
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a rechargeable power storage device; a temperature detecting unit for detecting temperature of said power storage device; a state estimating unit for estimating state of charge of said power storage device; a charging unit for externally charging said power storage device by receiving electric power from an external power source; and a control unit for controlling charging/discharging of said power storage device;
whereinsaid control unit includes a target value setting unit for setting, when said power storage device attains to a state ready for charging by the external power source, a target state of charge of said power storage device in accordance with the temperature of said power storage device, and a charge control unit for controlling charging power to said power storage device such that state of charge of said power storage device attains to said target state of charge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicle, comprising:
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a power supply system; and a driving force generating unit receiving electric power supplied from said power supply system and generating driving force;
whereinsaid power supply system includes a rechargeable power storage device; a temperature detecting unit for detecting temperature of said power storage device; a state estimating unit for estimating state of charge of said power storage device; a charging unit for externally charging said power storage device by receiving electric power from an external power source; and a control unit for controlling charging/discharging of said power storage device;
whereinsaid control unit includes a target value setting unit for setting, when said power storage device attains to a state ready for charging by the external power source, a target state of charge of said power storage device in accordance with the temperature of said power storage device, and a charge control unit for controlling charging power to said power storage device such that state of charge of said power storage device attains to said target state of charge.
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Specification