Display device for electric vehicle
First Claim
1. A display device for an electric vehicle with a vehicle-driving battery, comprising a display screen;
- an information storage medium having road map information including roads and topographical features of said roads at least for said current location;
means for displaying a road map from said storage medium on said display screen;
means for determining a current location of said vehicle;
means for displaying said determined current location of said vehicle on said road map displayed on said display screen;
means for detecting a residual charge in said vehicle-driving battery;
means for determining a possible remaining running distance of said vehicle on the basis of predicted consumption of vehicle-driving battery electric energy by said vehicle running on said detected residual charge of said vehicle-driving battery on a selected road extending from said current location, said determination of the possible remaining running distance being variable with topographic features of said selected road retrieved from said storage medium;
means for displaying on said road map a possible remaining running range of said vehicle on said selected road from said current location based on said determined possible remaining running distance of said vehicle.
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Accused Products
Abstract
A display device for an electric vehicle, which display device is capable of displaying a possible running range from a current location of a vehicle with a detected residual battery charge on a road map indicated on the display device screen, considering the climbing power of the vehicle with that detected residual battery charge. The display device operates to indicate a current location of the vehicle on the road map shown on the display screen according to map information read from a storage medium according to a detected current location of the vehicle, to determine a possible running distance of the vehicle with a detected residual battery charge on the basis of electric energy consumption rate for each road on the road map in consideration of topographic features of each road, and then to display a possible running range of the vehicle starting from the current location of the vehicle on the road map.
132 Citations
11 Claims
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1. A display device for an electric vehicle with a vehicle-driving battery, comprising a display screen;
- an information storage medium having road map information including roads and topographical features of said roads at least for said current location;
means for displaying a road map from said storage medium on said display screen;
means for determining a current location of said vehicle;
means for displaying said determined current location of said vehicle on said road map displayed on said display screen;
means for detecting a residual charge in said vehicle-driving battery;
means for determining a possible remaining running distance of said vehicle on the basis of predicted consumption of vehicle-driving battery electric energy by said vehicle running on said detected residual charge of said vehicle-driving battery on a selected road extending from said current location, said determination of the possible remaining running distance being variable with topographic features of said selected road retrieved from said storage medium;
means for displaying on said road map a possible remaining running range of said vehicle on said selected road from said current location based on said determined possible remaining running distance of said vehicle. - View Dependent Claims (2, 3, 4, 5, 6)
- an information storage medium having road map information including roads and topographical features of said roads at least for said current location;
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7. A display device for an electric vehicle, comprising means for detecting a current location of the vehicle;
- means for displaying said detected current location of the vehicle on a road map which is indicated on a display screen according to map information read from a storage medium;
means for detecting a residual charge in a battery for driving the vehicle;
means for determining a possible remaining running distance of the vehicle on the basis of predicted consumption of vehicle battery electric energy when the vehicle runs with the detected residual charge in said battery on roads extending from said current location, said determination of the possible remaining running distance being variable with topographic features of said roads specified according to topographic information of each road on the road map, which road map is read from the storage medium;
means for displaying on the road map a possible remaining running range of the vehicle from said current location, which possible remaining running range is determined on the basis of the determined possible remaining running distance of the vehicle. - View Dependent Claims (8, 9, 10, 11)
- means for displaying said detected current location of the vehicle on a road map which is indicated on a display screen according to map information read from a storage medium;
Specification