SYSTEM AND METHOD FOR MANAGING VEHICLE CHARGING STATIONS
First Claim
1. A system for fairly managing a bank of EVSEs comprising:
- a controller, the controller having control over a plurality of EVSEs, the controller having a queue of requests for charging corresponding to at least some of the EVSEs in the bank, the controller selecting from among the requests in the queue and enabling corresponding EVSEs such that aggregate power draw of enabled EVSEs does not exceed a first predetermined limit, the controller subsequently disabling the corresponding EVSEs and returning requests relating to the corresponding EVSEs to the queue.
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Accused Products
Abstract
A system and method for managing vehicle charging stations such that when at least two of a plurality of electric vehicle charging stations (also known as electric vehicle service equipment, or EVSE) occupied with vehicles awaiting a charge, the present system manages the charging of individual vehicles in cases where the aggregated demand for charging exceeds the capacity of the circuits supplying the plurality of EVSE. By cycling so that only a few of the vehicles are charging at a time, the demand on the circuits is kept below a predetermined limit. In cases where a load shedding event is in progress, the limit can be further reduced. In cases where the cost of electricity is varying dynamically, the system considers a driver'"'"'s explicit charging requirements (if any) and preferences for opportunistic charging when the price of electricity is not too high.
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Citations
12 Claims
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1. A system for fairly managing a bank of EVSEs comprising:
a controller, the controller having control over a plurality of EVSEs, the controller having a queue of requests for charging corresponding to at least some of the EVSEs in the bank, the controller selecting from among the requests in the queue and enabling corresponding EVSEs such that aggregate power draw of enabled EVSEs does not exceed a first predetermined limit, the controller subsequently disabling the corresponding EVSEs and returning requests relating to the corresponding EVSEs to the queue. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for fairly managing a bank of EVSEs comprising:
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a controller, the controller having control over a plurality of EVSEs, the controller having a queue of requests for charging corresponding to at least some of the EVSEs in the bank, the controller selecting from among the requests in the queue and enabling corresponding EVSEs such that aggregate power draw of enabled EVSEs does not exceed a first predetermined limit, the controller subsequently disabling the corresponding EVSEs and returning requests relating to the corresponding EVSEs to the queue; wherein the controller further has a detector for load shedding events, and in the case of a load shed event being detected, further ensures that the aggregate power draw of enabled EVSEs does not exceed a second predetermined limit, the second predetermined limit being less than the first predetermined limit; wherein the controller further has access to user preferences indicating a minimum energy requirement and the controller removes a corresponding request from the queue once the minimum energy requirement has been met. - View Dependent Claims (8, 9, 10, 11)
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12. A system for fairly managing a bank of EVSEs comprising:
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a controller cooperating with the bank of EVSEs so that a maximum number of EVSEs are simultaneously enabled such that aggregate power draw of enabled EVSEs does not exceed a first predetermined limit, the controller configured to enable and disable EVSEs in the bank in a manner that each electric vehicle attached to an EVSE is eventually charged.
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Specification