Vehicle driven by motor and control method of charging and discharging of secondary battery provided in vehicle
First Claim
1. A vehicle driven by a motor, the vehicle comprising:
- a secondary battery configured to supply an electric power to the motor;
a power regeneration portion configured to supply, to the secondary battery, a regenerative electric power that is recovered at a time of braking the vehicle;
a power storage amount detecting portion configured to detect an actual power storage amount of the secondary battery; and
a controlling portion programmed to control charging and discharging of the secondary battery,wherein the controlling portion is programmed to estimate the regenerative electric power that the vehicle obtains, and estimate an expected power-storage increasing amount corresponding to an increasing amount of the power storage amount at a time when the regenerative electric power thus estimated is supplied to the secondary battery, so as to calculate a virtual power storage amount from a sum total of the expected power storage increasing amount thus estimated and the actual power storage amount detected by the power storage amount detecting portion, and the controlling portion is programmed to perform charging and discharging on the secondary battery based on the virtual power storage amount, andwherein the controlling portion is programmed to vary an upper limit and a lower limit of the virtual power storage amount such that a width between the upper limit and the lower limit of the virtual power storage amount is not changed.
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Accused Products
Abstract
A vehicle driven by a motor includes: a secondary battery configured to supply an electric power to the motor; a power regeneration portion configured to supply, to the secondary battery, a regenerative electric power that is recovered at a time of braking the vehicle; a power storage amount detecting portion configured to detect a power storage amount of the secondary battery; and a controlling portion configured to control charging and discharging of the secondary battery. The controlling portion estimates a regenerative electric power, and estimates an expected power-storage increasing amount, so as to calculate a virtual power storage amount from a sum total of the expected power-storage increasing amount and an actual power storage amount. The controlling portion performs charging and discharging on the secondary battery based on the virtual power storage amount.
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Citations
10 Claims
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1. A vehicle driven by a motor, the vehicle comprising:
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a secondary battery configured to supply an electric power to the motor; a power regeneration portion configured to supply, to the secondary battery, a regenerative electric power that is recovered at a time of braking the vehicle; a power storage amount detecting portion configured to detect an actual power storage amount of the secondary battery; and a controlling portion programmed to control charging and discharging of the secondary battery, wherein the controlling portion is programmed to estimate the regenerative electric power that the vehicle obtains, and estimate an expected power-storage increasing amount corresponding to an increasing amount of the power storage amount at a time when the regenerative electric power thus estimated is supplied to the secondary battery, so as to calculate a virtual power storage amount from a sum total of the expected power storage increasing amount thus estimated and the actual power storage amount detected by the power storage amount detecting portion, and the controlling portion is programmed to perform charging and discharging on the secondary battery based on the virtual power storage amount, and wherein the controlling portion is programmed to vary an upper limit and a lower limit of the virtual power storage amount such that a width between the upper limit and the lower limit of the virtual power storage amount is not changed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A control method of charging and discharging of a secondary battery provided in a vehicle, the control method comprising:
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detecting an actual power storage amount of the secondary battery; estimating a regenerative electric power that the vehicle obtains; estimating an expected power-storage increasing amount corresponding to an increasing amount of the power storage amount at a time when the estimated regenerative electric power is supplied to the secondary battery; calculating a virtual power storage amount from a sum total of the actual power storage amount thus detected and the expected power-storage increasing amount thus estimated; performing charging and discharging on the secondary battery based on the virtual power storage amount; and varying an upper limit and a lower limit of the virtual power storage amount such that a width between the upper limit and the lower limit of the virtual power storage amount is not changed. - View Dependent Claims (8, 9, 10)
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Specification