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| This object is accomplished by a circuit arrangement for indicating the charge status of a battery ... |
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| Method of determining and displaying battery charge status |
| OF EMBODIMENTS Referring first to FIG. 1 of the drawings, a load 2 is concerned to a battery (... |
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| Status indicator for battery charger |
| What is claimed is: 1. Apparatus for indicating multiple operating states of a battery charger ... |
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| Method of and apparatus for setting battery alarm voltage in battery management server |
| It is an object of the present invention to solve at least the problems in the conventional ... |
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| Disabling circuit for an iontophoretic system |
| The present invention advantageously prevents any delivery of drugs to the patient when the power ... |
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| Two lead universal defibrillation, pacing and sensing system |
| The invention provides an implantable cardiac stimulation system capable of sensing electrical ... |
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| Power supply system for portable electronic devices |
| Accordingly, it is an object of the present invention to provide a novel power supply system for a ... |
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| Intelligent power management for rechargeable batteries |
| An electronic device battery pack for a battery requiring cycling to prolong lifetime is divided ... |
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| Power supply control system |
| Accordingly, it is an object of the present invention to provide an electric-power supply control ... |
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Time controlled battery charger
| Details |
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Inventors: Bourke, Robert F.; Johansen, David K.;
Assignee: Gould Inc. (Rolling Meadows, IL)
Primary Examiner: Hickey; Robert J.
Assistant Examiner:
Attorney, Agent or Firm: Oslakovic; Charles S., Snee, III; Charles E., Baumann; Russell E.
In a charger for the battery of an electric vehicle, a stable time of day clock is provided to initiate charging at a preselected time of day, and to control at least a portion of the charge cycle. The clock can be set in accordance with the schedule established for the vehicle so that charging will be accomplished automatically during the scheduled time of day when the vehicle is not in use. In the case of a fleet of such vehicles, at the termination of use, each driver simply parks the vehicle and connects an AC power line; charging for each vehicle will be initiated as determined by the clock associated therewith. An indicating system is provided to advise the driver that power has been properly connected and charging will commence at the appropriate time. |
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DETAILED DESCRIPTION We claim as our invention: 1.
In an on-board charger for an electric vehicle, the vehicle having a propulsion battery, a propulsion motor, a power converter for controlling power from the battery to the motor and a charger for charging the battery, the improvement comprising, a stable oscillator for producing a clock signal, counter means responsive to said clock signal for producing a time of day output signal, means operative on said counter means for selecting the time of day at which said time of day output signal is produced, means responsive to the time of day signal for initiating a charging cycle at the preselected time of day, and means controlling at least a portion of said charging cycle in response to time signals produced by said clock.
2.
In an on-board charger for an electric vehicle, the vehicle having a propulsion motor, a propulsion battery, a power converter for controlling power from the battery to the motor, and a charger for charging said battery, the improvement comprising, a stable oscillator for producing precise timing pulses, a counter responsive to said oscillator and having a period related to day length, adjusting means for said counter for causing said counter to produce a time of day output signal at a preselected time of day, and means responsive to said time of day signal for initiating a charging cycle.
3.
The improvement as set forth in claim 2 wherein the oscillator comprises a crystal controlled oscillator.
4.
The improvement as set forth in claim 2 wherein the electric vehicle has an input connector for receiving AC power for charging, sensing means for producing a signal indicating AC power is applied to said connector, means responsive to the sensing means for producing an enabling signal allowing charging to commence when intiated by said time of day signal, and indicator means responsive to said enabing means for providing an indication that the vehicle is ready to charge.
5.
The improvement as set forth in claim 4 wherein there is provided contactor means interposed between the connector and the charger, gating means responsive to the enabling signal and the time of day signal for energizing said contactor means to apply AC power to the charger
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