System and method for recommending charging station for electric vehicle

• US 9,851,213 B2
• Filed: 12/19/2016
• Issued: 12/26/2017
• Est. Priority Date: 03/23/2016
• Status: Active Grant

• Current Assignee: Eipgrid Incorporated
• Original Assignee: I-ON Communications Co., Ltd.
• Inventors: Oh, Jae Cheol, Paik, Kyoung Seok
• Primary Examiner(s): Beaulieu, Yonel
• Assistant Examiner(s): WEEKS, MARTIN A
• Application Number:
  US15/383,918
• Publication Number:
  US 20170276503A1
• Time in Patent Office: 372 Days
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/62 Vehicle position
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• CPC Class Codes: G01C 21/3679 Retrieval, searching and output of POI information, e.g. hotels, restaurants, shops, filling stations, parking facilities G01C21/3611 takes precedence
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: 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]

Abstract

The present disclosure relates to a big data-based method or system for recommending electric vehicle (EV) charging stations with the shortest charge waiting time, which comprises a driving information receiving unit for receiving a charging station search request, and information about estimated discharge time and a current location from an electric vehicle; a charging station information receiving unit for receiving power consumption data from charging stations in real time; a charge waiting time calculation unit for receiving the power consumption data from the charging station information receiving unit, and, in response to a charging station search request, calculating charge waiting time of the charging stations on the basis of their power consumption; and an optimal charging station providing unit for receiving the information about the estimated discharge time and current location from the driving information receiving unit, and receiving the charge waiting time from the charge waiting time calculation unit, and providing information about at least one optimal charging station that can reached within the estimated discharge time based on the current location and can recharge the vehicle in the shortest time.

Claims

1. An electric vehicle (EV) charging station recommendation system comprising:

a driving information receiving unit for receiving a charging station search request, and information about estimated discharge time and a current location from an electric vehicle;

a charging station information receiving unit for receiving power consumption data from charging stations in real time;

a charge waiting time calculation unit for receiving the power consumption data from the charging station information receiving unit, and, in response to a charging station search request, calculating charge waiting time of the charging stations on the basis of their power consumption data; and

an optimal charging station providing unit for receiving the information about the estimated discharge time and current location from the driving information receiving unit, and receiving the charge waiting time from the charge waiting time calculation unit, and providing information about at least one optimal charging station that can be reached within the estimated discharge time based on the current location and can recharge the vehicle in the shortest time,

wherein the charge waiting time calculation unit stores in advance a set basic estimated charging time corresponding to each level of power consumption of a respective charging stall,

wherein the power consumption data received from a charging station is the power consumption of the charging station (“

charging station power consumption”

),

wherein the basic estimated charge time corresponding to the value of the charging station power consumption divided by the number of charging stalls in the charging station is used as the charge waiting time at the charging station,

wherein the driving information receiving unit receives actual charge time from the electric vehicle recharged at the charging station, and wherein the charge waiting time calculation unit receives and stores the charging station power consumption during the actual charge time from the charging station information receiving unit, and reflects the actual power consumption and actual charge time t1 so as to improve accuracy of the charge waiting time calculation, and

wherein the charge waiting time calculation unit calculates an average of the charging station power consumption during the actual charge time, and wherein the charge waiting time calculation unit adds the basic estimated charge time to the actual charge time and calculates the average thereof to generate a new estimated charge time (“

updated estimated charge time”

), thereby replacing the basic estimated charge time with the updated estimate charge time.

2. The EV charging station recommendation system according to claim 1, wherein the optimal charging station providing unit determines nearby charging stations that can be reached within the estimated discharge time, and provides information on at least one optimal charging station having the shortest charge waiting time, selected among the nearby charging stations.

3. The EV charging station recommendation system according to claim 1, wherein the optimal charging station providing unit determines nearby charging stations that can be reached within the estimated discharge time, calculates minimum charge time, which is the sum of travel time to a respective charging station and charge waiting time at said charging station, and provides information about optimal charging stations in the order from shortest to longest in the minimum charge time.

4. The EV charging station recommendation system according to claim 1, wherein the charge waiting time calculation unit calculates maximum charging stall power consumption, which is the value of the maximum power consumption of the charging station divided by the number of charging stalls held in the charging station,

wherein the quotient of the power consumption of the charging station divided by the maximum charging stall power consumption is subtracted from the total number of the charging stalls of the charging station, and the result of said operation is determined as the number of unused charging stalls, and

wherein if the number of the unused charging stalls is greater than 1, the charge waiting time is determined as zero.