Method of transmitting and receiving signal indicative of remaining capacity of storage battery for propelling electric vehicle
First Claim
1. A method of transmitting and receiving a signal indicative of the remaining capacity of a storage battery for propelling an electric vehicle, comprising the steps of:
- transmitting a display request signal for displaying the remaining capacity of the storage battery from a portable control unit which has a plurality of indicator lamps corresponding to respective ranges of a rated capacity of the storage battery, to a communication unit on the electric vehicle;
receiving the display request signal with the communication unit;
determining one of said ranges to which the remaining capacity of the storage battery belongs, with the communication unit;
transmitting a remaining capacity display signal representing the determined range from the communication unit to the portable control unit;
receiving the remaining capacity display signal with the portable control unit;
determining whether the signal received by said portable control unit is normal or not; and
turning on one of the indicator lamps which corresponds to the range to which the remaining capacity of the storage battery belongs, based on the received remaining capacity display signal if the received signal is normal, and blinking a predetermined indicator map if the received signal is not normal.
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Accused Products
Abstract
A signal indicative of the remaining capacity of a storage battery for propelling an electric vehicle is transmitted and received between a portable control unit and a communication unit on the electric vehicle. A display request signal for displaying the remaining capacity of the storage battery is transmitted from the portable control unit which has a plurality of indicator lamps corresponding to respective ranges of a rated capacity of the storage battery, to the communication unit. When the display request signal is received by the communication unit, one of the ranges to which the remaining capacity of the storage battery belongs is determined by the communication unit, and a remaining capacity display signal representing the determined range is transmitted from the communication unit to the portable control unit. The remaining capacity display signal is received by the portable control unit, and one of the indicator lamps which corresponds to the range to which the remaining capacity of the storage battery belongs is turned on based on the received remaining capacity display signal for a predetermined period of time.
40 Citations
17 Claims
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1. A method of transmitting and receiving a signal indicative of the remaining capacity of a storage battery for propelling an electric vehicle, comprising the steps of:
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transmitting a display request signal for displaying the remaining capacity of the storage battery from a portable control unit which has a plurality of indicator lamps corresponding to respective ranges of a rated capacity of the storage battery, to a communication unit on the electric vehicle; receiving the display request signal with the communication unit; determining one of said ranges to which the remaining capacity of the storage battery belongs, with the communication unit; transmitting a remaining capacity display signal representing the determined range from the communication unit to the portable control unit; receiving the remaining capacity display signal with the portable control unit; determining whether the signal received by said portable control unit is normal or not; and turning on one of the indicator lamps which corresponds to the range to which the remaining capacity of the storage battery belongs, based on the received remaining capacity display signal if the received signal is normal, and blinking a predetermined indicator map if the received signal is not normal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of transmitting and receiving a signal indicative of the remaining capacity of a storage battery for propelling an electric vehicle, comprising the steps of:
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transmitting a display request signal for displaying the remaining capacity of the storage battery from a portable control unit which has a plurality of indicator lamps corresponding to respective ranges of a rated capacity of the storage battery, to a communication unit on the electric vehicle; switching the portable control unit to a reception mode when the display request signal is transmitted from the portable control unit; receiving the display request signal with the communication unit; determining one of said ranges to which the remaining capacity of the storage battery belongs, with the communication unit; transmitting a remaining capacity display signal representing the determined range from the communication unit to the portable control unit; receiving the remaining capacity display signal with the portable control unit; and turning on one of the indicator lamps which corresponds to the range to which the remaining capacity of the storage battery belongs, based on the received remaining capacity display signal, for a predetermined period of time. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification