# US 2022/0144126 A1 · System and Method for Managing Vehicle Charging Stations

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- Number: US 2022/0144126 A1
- Document ID: US20220144126A1
- Status: Published application
- Kind: A1
- Application number: 17/480,162
- Filed: 2021-09-21
- Published: 2022-05-12
- Earliest claimed: 2012-10-19
- Assignees: Liberty PlugIns, Inc.
- Inventors: Christopher Outwater; William Gibbens Redmann
- Web page: https://patentgrep.com/patent/US20220144126A1

## CPC

- B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
- B60L 53/14: Conductive energy transfer
- B60L 53/305: {Communication interfaces}
- B60L 53/31: Charging columns specially adapted for electric vehicles
- B60L 53/63: in response to network capacity
- B60L 53/65: involving identification of vehicles or their battery types
- B60L 53/665: {Methods related to measuring, billing or payment}
- B60L 53/68: Off-site monitoring or control, e.g. remote control
- H02J 3/17: Demand-responsive operation of AC power transmission or distribution networks
- H02J 3/322: {the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging}
- B60L 2240/34: Cabin temperature
- B60L 2240/545: Temperature
- B60L 2240/70: Interactions with external data bases, e.g. traffic centres
- B60L 2240/72: Charging station selection relying on external data
- Y02B 70/30: Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 10/72: Electric energy management in electromobility
- Y02T 10/92: Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
- Y02T 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- Y02T 90/167: Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
- Y04S 10/126: the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
- Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving
- Y04S 20/242: Home appliances
- Y04S 30/12: Remote or cooperative charging
- Y04S 30/14: Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## 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.

## Claims

### 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.

### Claim 2 (depends on 1)

The system of claim 1, 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.

### Claim 3 (depends on 1)

The system of claim 1, 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.

### Claim 4 (depends on 3)

The system of claim 3, 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.

### Claim 5 (depends on 1)

The system of claim 1, wherein the controller further has access to a price feed and user preferences indicating a minimum energy requirement and acceptable price for additional energy, the controller skipping a corresponding request in the queue once the minimum energy requirement has been met and while the price feed indicated a current price for electricity that exceeds the acceptable price.

### Claim 6 (depends on 5)

The system of claim 5, 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.