BATTERY CHARGING CONTROL DEVICE AND BATTERY CHARGING CONTROL METHOD FOR ELECTRIC VEHICLE
First Claim
1. A battery charging control device for an electric vehicle, which controls charging of a battery by controlling a power generation device installed in the electric vehicle, comprising:
- a current position detection unit that detects a current position of a host vehicle;
a management area setting unit that sets a battery energy management area using the current position as a reference;
a road information detection unit that detects at least one travelable route within the battery energy management area;
a required travel energy estimation unit that estimates energy values required to travel to respective points on the travelable route from the current position on the basis of information relating to the current position and information relating to the respective points;
a maximum/minimum extraction unit that extracts a maximum value and a minimum value from the required travel energy values;
a management target calculation unit that calculates a battery energy management upper limit value and a battery energy management lower limit value on the basis of the maximum value and the minimum value of the required travel energy;
a battery energy management width calculation unit that calculates a battery energy management width by subtracting the battery energy management lower limit value from the battery energy management upper limit value;
a management area modification unit that modifies the battery energy management area when the battery energy management width is not within a predetermined range such that the battery energy management width enters the predetermined range; and
a charging control unit that controls the vehicle-installed power generation device such that a remaining battery energy is within the battery management width between the battery energy management upper limit value and the battery energy management lower limit value.
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Accused Products
Abstract
A battery charging control device for controlling a power generation device installed in an electric vehicle sets a battery energy management area using a current position of a host vehicle as a reference, detects at least one travelable route within the battery energy management area, calculates a battery energy management upper limit value and a battery energy management lower limit value on the basis of a maximum value and a minimum value of energy values required to travel to respective points on the travelable route from the current position, and calculates a battery energy management width by subtracting the management lower limit value from the management upper limit value. When the battery energy management width is not within a predetermined range, the battery energy management area is modified so as to enter the predetermined range. As a result, battery charging is controlled such that a magnitude relationship between the battery energy management upper limit value and the battery energy management lower limit value does not reverse.
67 Citations
6 Claims
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1. A battery charging control device for an electric vehicle, which controls charging of a battery by controlling a power generation device installed in the electric vehicle, comprising:
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a current position detection unit that detects a current position of a host vehicle; a management area setting unit that sets a battery energy management area using the current position as a reference; a road information detection unit that detects at least one travelable route within the battery energy management area; a required travel energy estimation unit that estimates energy values required to travel to respective points on the travelable route from the current position on the basis of information relating to the current position and information relating to the respective points; a maximum/minimum extraction unit that extracts a maximum value and a minimum value from the required travel energy values; a management target calculation unit that calculates a battery energy management upper limit value and a battery energy management lower limit value on the basis of the maximum value and the minimum value of the required travel energy; a battery energy management width calculation unit that calculates a battery energy management width by subtracting the battery energy management lower limit value from the battery energy management upper limit value; a management area modification unit that modifies the battery energy management area when the battery energy management width is not within a predetermined range such that the battery energy management width enters the predetermined range; and a charging control unit that controls the vehicle-installed power generation device such that a remaining battery energy is within the battery management width between the battery energy management upper limit value and the battery energy management lower limit value. - View Dependent Claims (2, 3, 4, 5)
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6. A battery charging control method for an electric vehicle, in which charging of a battery is controlled by controlling a power generation device installed in the electric vehicle, comprising:
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a current position detection operation for detecting a current position of a host vehicle; a management area setting operation for setting a battery energy management area using the current position as a reference; a road information detection operation for detecting at least one travelable route within the battery energy management area; a required travel energy estimation operation for estimating energy values required to travel to respective points on the travelable route from the current position on the basis of information relating to the current position and information relating to the respective points; a maximum/minimum extraction operation for extracting a maximum value and a minimum value from the required travel energy values; a management target calculation operation for calculating a battery energy management upper limit value and a battery energy management lower limit value on the basis of the maximum value and the minimum value of the required travel energy; a battery energy management width calculation operation for calculating a battery energy management width by subtracting the battery energy management lower limit value from the battery energy management upper limit value; a management area modification operation for modifying the battery energy management area when the battery energy management width is not within a predetermined range such that the battery energy management width enters the predetermined range; and a charging control operation for controlling the vehicle-installed power generation device such that a remaining battery energy is within the battery management width between the battery energy management upper limit value and the battery energy management lower limit value.
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Specification