CHARGE METHOD AND DEVICE OF BATTERY FOR ELECTRIC MOTOR VEHICLE
First Claim
1. A charge method of a battery for an electric motor vehicle, in which a battery is charged by an outside electric source, comprising:
- a residual charge quantity detecting step for detecting a residual charge quantity of the battery before charging;
a maximum-quantity charge time calculating step for calculating a maximum-quantity charge time which is required for the residual charge quantity of the battery becoming the maximum quantity based on detection result of said residual charge quantity detecting step;
a driving-start time estimating step for estimating a driving-start time of the electric motor vehicle;
a first charge step for executing a first charge in which the charge of the battery is started from a driving stop of the electric motor vehicle, continued for a specified period of charge time which is shorter than the maximum-quantity charge time calculated by said maximum-quantity charge time calculating step, and completed before the driving-start time of the electric motor vehicle estimated by said driving-start time estimating step; and
a second charge step for executing a second charge in which the charge of the battery is started after said first charge step is completed and completed at the driving-start time of the electric motor vehicle estimated by said driving-start time estimating step.
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Abstract
The present invention is a charge method of a battery for an electric motor vehicle, in which a battery is charged by an outside electric source. A residual charge quantity of the battery is detected before charging. A maximum-quantity charge time Ttotal which is required for the residual charge quantity of the battery becoming the maximum quantity is calculated based on detection result. A driving-start time tds of the electric motor vehicle is estimated. A first charge is executed so as to be started from a driving stop of the electric motor vehicle, continued for a period of time which is shorter than the maximum-quantity charge time Ttotal, and completed before the driving-start time tds. A second charge is executed so as to be started after the first charge is completed and completed at the driving-start time tds.
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Citations
16 Claims
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1. A charge method of a battery for an electric motor vehicle, in which a battery is charged by an outside electric source, comprising:
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a residual charge quantity detecting step for detecting a residual charge quantity of the battery before charging; a maximum-quantity charge time calculating step for calculating a maximum-quantity charge time which is required for the residual charge quantity of the battery becoming the maximum quantity based on detection result of said residual charge quantity detecting step; a driving-start time estimating step for estimating a driving-start time of the electric motor vehicle; a first charge step for executing a first charge in which the charge of the battery is started from a driving stop of the electric motor vehicle, continued for a specified period of charge time which is shorter than the maximum-quantity charge time calculated by said maximum-quantity charge time calculating step, and completed before the driving-start time of the electric motor vehicle estimated by said driving-start time estimating step; and a second charge step for executing a second charge in which the charge of the battery is started after said first charge step is completed and completed at the driving-start time of the electric motor vehicle estimated by said driving-start time estimating step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A charge device of a battery for an electric motor vehicle, comprising:
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a battery to be charged by an outside electric source and supply an electric power to a motor for driving the vehicle; a residual charge quantity detecting means for detecting a residual charge quantity of the battery before charging; and a charge control means for controlling charging of said battery, wherein said charge control means calculates a maximum-quantity charge time which is required for the residual charge quantity of the battery becoming the maximum quantity based on detection result of said residual charge quantity detecting means, estimates a driving-start time of the electric motor vehicle, executes a first charge in which the charge of the battery is started from a driving stop of the electric motor vehicle, continued for a specified period of charge time which is shorter than the maximum-quantity charge time, and completed before the driving-start time of the electric motor vehicle, and executes a second charge in which the charge of the battery is started after the first charge is completed and completed at the driving-start time of the electric motor vehicle. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification