KR101252209B1 - Auto searching system and method of electric station within dte of electric vehicle - Google Patents

Abstract

The electric charging station automatic search system within the electric vehicle traveling range according to the present invention transmits the driving distance information to the car ubiquitous center and makes a reservation for charging to the car ubiquitous center receiving the location information from the electric charging station located within the driving distance. A telematics unit for requesting; A battery management system for providing battery SOC information of an electric vehicle to the telematics unit; And an input / output unit which displays the current position information of the electric vehicle and the current state of the electric charging station and provides the driver's input data to the telematics unit.

Description

AUTO SEARCHING SYSTEM AND METHOD OF ELECTRIC STATION WITHIN DTE OF ELECTRIC VEHICLE}

The present invention collects the driving range of the electric vehicle and the location of the electric charging station in real time to warn the presence of the electric charging station located within the driving range so that the electric vehicle is not completely discharged, as well as the optimal electric charging station located within the driving range An automatic charging station automatic search system and method within an electric vehicle traveling range that can be selectively reserved.

Due to the limitation of the construction of charging infrastructure for the developed electric vehicle (EV) and plug in hybrid EV (PHEV), the electric charging station is not widely distributed, and it will take a long time for the infrastructure to be built due to cost problems. It is expected. When an electric vehicle needs to be charged, a full discharge may occur during driving if the charging station is not within a distance to empty (DTE) range.

Therefore, in order to prevent such a discharge, a charge warning is issued with a battery state of charge (SOC) indication in the cluster. Furthermore, when the electric vehicle grasps the voltage state of the battery and falls below a certain value, it uses the geographic information system to provide the driver with information about an electric charging station that is located on the shortest path from the current car position and provides optimal service, effectively recharging it. A system capable of doing this has been proposed.

As an example of the conventional electric vehicle charging station guide system described above, Korean Laid-Open Patent Publication No. 10-1998-0059260 (Charging Station Guidance System and Method of an Electric Vehicle) is mentioned.
Looking at the prior art in detail, a satellite signal receiver for receiving information on the direction and speed of the vehicle currently driving from the geographic information system, and the optimal electric charging station at the current position of the vehicle by using the information of the satellite signal receiver The system control unit for detecting the; and the display unit for displaying the geographic information and the optimum electric charging station processed by the system control unit to the driver, and the battery SOC display unit for detecting the voltage state of the battery of the current electric vehicle. The system control unit detects the charging stations adjacent to the current vehicle location from the above-described map information, calculates the shortest path to each charging station, and calculates the time consumed to charge at each adjacent charging station, that is, the service time and the adjacent electricity. The optimal charging station should be selected according to the traffic information of the route to the charging station.

However, the conventional electric vehicle charging station guide system as described above is difficult to prevent the possibility of discharge in advance because the driver must determine the charging time manually. In other words, although it is possible to search for the optimal electric charging station at the current position, there is a fatal problem that the charging is not possible if the optimal electric charging station is not located within the driving range.

Therefore, there is an urgent need for a system that automatically displays battery charge warnings by synthesizing the driving distance of the vehicle and the information of the electric charging station within the range in real time.

KR 10-1998-0059260 A

The present invention has been proposed to solve the above problems, and in advance collects the information of the electric charging station within the driving range of the electric vehicle, if there is only one electric charging station within the driving range to warn the driver in advance It is an object of the present invention to provide an automatic charging station search system and method within an electric vehicle driving range capable of preventing a vehicle from being completely discharged. In other words, it is not a passive method of inducing a recharging of an electric vehicle by alarming when the battery SOC falls below a predetermined level as in the related art, but calculating the distance from the current position of the electric vehicle to the electric charging station and using the same. Compared to the above, it is possible to determine whether to recharge, thereby actively and actively preventing the electric discharge of electric vehicles.

In addition, the present invention not only warns of the presence of the electric charging station located within the driving range, it is possible to selectively book the optimal charging station located within the driving range of the electric vehicle driving range that can provide convenience to the user It is an object of the present invention to provide an automatic charging system and method for recharging an electric charging station.

The electric charging station automatic search system within the electric vehicle traveling range according to the present invention for achieving the above object, the transmission of the driving distance information to the car ubiquitous center and the position information received from the electric charging station located within the driving distance A telematics unit for requesting a charging reservation to a car ubiquitous center; A battery management system for providing battery SOC information of an electric vehicle to the telematics unit; And an input / output unit which displays the current position information of the electric vehicle and the current state of the electric charging station and provides the driver's input data to the telematics unit.

In this case, it is preferable that the telematics unit outputs a charging alarm when one electric charging station is located within a driving distance regardless of the battery SOC level.

In addition, the telematics unit, when two or more charging stations are located within the driving distance, it is preferable to calculate and output the current position of the electric vehicle, the distance between the charging station and the charging standby time.

An automatic charging station search method within an electric vehicle traveling range according to the present invention includes: a vehicle information transmission step of calculating a driving distance through an electric vehicle current location and a battery management system 14 and transmitting the distance to a vehicle ubiquitous center; An electric charging station display step of displaying information of an electric charging station located within a driving range, regardless of the battery SOC level of the electric vehicle, from the vehicle ubiquitous center receiving information on the charging status and location of a plurality of electric charging stations; If the number of the electric charging station within the driving range is one, characterized in that it comprises a charging alarm step of displaying and alerting the electric charging station.

At this time, it is preferable that the guide further comprises a guide step for guiding the electric charging station.

In addition, after the electric charging station display step, if the number of the electric charging station within the driving range is two or more, and indicates whether to recharge the driver through the input and output unit receives the charge acceptance, first calculates the distance and standby time with the electric charging station A list display step of displaying a ranking and an electric charging station list; A reservation step of transmitting the information and the reservation contents of the electric vehicle to the car ubiquitous center when the reservation is requested through the input / output unit in the list; The vehicle number information of the electric vehicle applying for the reservation is transmitted to the electric charging station to apply for the reservation, and receives the reservation confirmation content information from the vehicle ubiquitous center 20 which receives the confirmation signal of the applied reservation. It is preferably configured to further include a reservation confirmation step to display.

On the other hand, it is preferably configured to further include a guide step for guiding the reserved electric charging station.

According to the automatic charging station search system and method within the electric vehicle driving range as described above, when the TMU has only one electric charging station remaining within the driving range through real-time communication with the CUbiS center, the AVN or By displaying a warning light and guiding the electric charging station, the battery SOC information displayed in the cluster is supplemented with the limitations of the prior art in which the driver must manually determine the charging time of the battery. It can prevent.

In addition, by displaying the charging station information (number, location) in the driving distance in real time through the AVN can help the driver determine the battery charging time. In other words, it is possible to provide high-quality service to the driver by displaying the optimal electric charging station in consideration of the waiting time and distance according to the priority.

On the other hand, the present invention has a great advantage in environmentally friendly vehicles, such as EV, PHEV that does not have sufficient charging infrastructure, but can be used in a general vehicle equipped with a TMU. That is, the TMU can be used not only in smartphones but also in AVNs and tablet PCs that can be mounted in vehicles, thereby expanding the market scope.

1 is a schematic configuration diagram of an automatic charging station search system within an electric vehicle driving range according to an embodiment of the present invention,
2 is a flowchart of a method for automatically searching for an electric charging station within an electric vehicle traveling range according to an embodiment of the present invention;
3A to 3C are exemplary views for explaining a method for automatically searching an electric charging station within an electric vehicle traveling range according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the electric charging station automatic search system and method within the electric vehicle traveling range according to the present invention.

1 is a schematic configuration diagram of an electric charging station automatic search system within an electric vehicle traveling range according to an embodiment of the present invention, Figure 2 is an electric charging station automatic search within an electric vehicle driving range according to an embodiment of the present invention 3A to 3C are exemplary views for explaining an automatic charging station search method within an electric vehicle traveling range according to an embodiment of the present invention.

In adding the reference numerals to the components of the drawings, the same components are to have the same reference numerals as possible even if displayed on different drawings, and known functions that are determined to unnecessarily obscure the subject matter of the present invention Detailed description of the configuration will be omitted. Also, directional terms such as 'top', 'bottom', 'front', 'back', 'tip', 'front', 'back' and the like are used in connection with the orientation of the disclosed figure (s). Since the elements of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for illustrative purposes, not limitation.

In one preferred embodiment of the present invention, an electric charging station automatic search system within a range capable of driving an electric vehicle includes an electric vehicle 10 for wirelessly communicating charging information and vehicle information of a battery, as shown in FIG. The car ubiquitous center (hereinafter referred to as “CUBiS”) 20 which receives the driving distance of the car 10, the current position and the charging reservation information, and provides the information of the electric charging station, and the electric power to the CUbiS center 20 It is configured to include an electric charging station 30 to transmit the charging station status and accept the charge reservation.

The electric vehicle 10 includes a telematics unit 12 for wireless communication with the CUbiS center 20 and a battery management system for providing battery state of charge (SOC) information of the electric vehicle. 14, a cluster 16 for displaying vehicle information to a driver, and a GPS receiver 18 for receiving position information from a global position system to know current position information of an electric vehicle. And an input / output unit for displaying the map information through the GPS receiver 18 and providing the driver's input data to the telematics unit 12 (hereinafter, referred to as 'TMU'). The input / output unit is preferably AVN (Audio Video Navigation) 19.

The CUbiS center 20, the vehicle ubiquitous system to communicate with the TMU 12 of the electric vehicle to be provided with a variety of vehicle-related services.

The BMS 14 receives the charge level of the battery for the electric vehicle as CAN and displays it in the cluster. The timing of the lighting of the battery warning lamp is determined after the vehicle performance evaluation reflecting the characteristics of the battery SOC gauge.

The AVN 19 may also be used as a tablet PC, and may display a battery charge warning from the TMU 12 or an electric charging station received from the CUbiS center 20. In addition, the driver receives information about an electric charging station from the driver and transmits the information to the TMU 12 or makes a reservation for charging the TMU 12.

The TMU 12 receives information such as a driving distance or a charge reservation of the electric vehicle 10 and transmits the information to the CUbiS center 20, and receives information about an electric charging station from the CUbiS center 20. Therefore, information about the electric charging station located within the driving range received from the CUbiS center 20 is displayed through the AVN 19, and a charge is reserved from the driver at a specific electric charging station by the driver. Will be sent.

The electric charging station 30 transmits the charging status to the CUbiS center 20 in real time, and receives information about the charge reservation from the CUbiS center 20.

An automatic charging station search method within an electric vehicle traveling range according to the present invention configured as described above will be described with reference to FIGS. 2 to 3C.

First, the CUbiS center 20 receives in real time information on the charging status and location of the electric charging station 30.

After that, the TMU 12 of the electric vehicle 10 calculates the current position of the electric vehicle 10 and the traveling distance through the BMS 14 through the GPS receiver 18 and transmits the calculated distance to the CUbiS center 20. (S10).

When the CUbiS center 20 transmits the location information of the electric vehicle 10 and the information of the electric charging station 30 located within the driving range to the TMU 12, the TMU 12 is electrically connected to the AVN 19. The location of the charging station is displayed (S20).

At this time, it is determined whether the number of electric charging stations within the driving range is one or more (S30).

Herein, in the present invention, as shown in FIG. 3A, if the number of electric charging stations is one within the driving distance r at the current vehicle position P (A), the electric vehicle is charged with a charging alarm regardless of the level of the battery SOC. Is prevented from being completely discharged. In other words, the battery SOC is calculated at the current position of the electric vehicle when the battery SOC is below a certain level, and the battery alarm is charged according to the presence or absence of the charging station within the driving range. .

Therefore, if there is only one electric charging station within the driving distance, as described above, the charging alarm is issued as shown in FIG. 3B regardless of the battery SOC, and the position A of the electric charging station is determined through the AVN 19. FIG. It is displayed (S40).

On the other hand, as shown in FIG. 3C, if the electric charging station is two or more places within the driving distance r at the current vehicle position P (A1, B1, C1), the driver is connected to the driver through the AVN 19 in the TMU 12. Indicates to recharge (S90), and if the charge is not accepted through the AVN (S92), the location of the electric charging station within the driving range is displayed again through the AVN (19).

When the driver accepts the charge acceptance request (S92) and accepts the charge through the AVN 19, the TMU 12 displays the optimal location of the electric charging station.

The best charging station finds the best charging station considering the distance and waiting time from the vehicle. E.g,

C = K × distance from charging station + L × waiting time,

K: Coefficient indicating the center of gravity at the distance from the current vehicle position to the charging station, L: Coefficient indicating the center of gravity at the station waiting time.

That is, the charging station having the minimum C value among the searched electric charging stations has priority, and outputs the following table through the AVN 19 (S94).

Priority Electric charging station waiting time Distance from current location Reservation One B1 0 min 7km CLICK 2 A1 15 minutes 5km CLICK 3 C1 1 hours 1.5Km CLICK

The optimal electric charging station is displayed as described above, and the reservation is requested through the AVN 19 (S50). In this case, the reservation request may be similarly received even when there is one electric charging station within a driving distance.

Receiving a reservation request from the driver for the reservation request, and transmits the information and reservation details of the electric vehicle to the CUbiS center (S60). The CUbiS center 20 transmits information such as the vehicle number of the electric vehicle applying for the reservation to the electric charging station to apply for the reservation and receives a confirmation signal of the applied reservation. Thereafter, the CUbiS center 20 transmits this reservation confirmation to the TMU 12 of the electric vehicle, and the TMU 12 displays the reservation on the AVN 19 (S70). If there is no error in the displayed reservation, the guidance to the corresponding charging station via the AVN 19 starts (S80).

As described above, the present invention can help the driver determine the charging station search time by displaying the charging station information (the number and location of the charging stations) within the driving distance in real time on the AVN. In other words, when you arrive at the charging station last time, but all the chargers are already in use (15 minutes fast charging time), you may inevitably have to wait a considerable amount of time. The cost cannot be minimized. Therefore, the present invention can provide the user with refined information of the search for the optimal charging station in consideration of the waiting time and distance.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention if they are apparent to those skilled in the art.

10: electric vehicle 12: telematics unit (TMU)
14: Battery Management System (BMS) 16: Cluster
19: AVN (Audio Video Navigation) 18: GPS Receiver
20: CUbiS (Car Ubiquitous System) Center 30: Electric Charging Station

Claims (7)

Telematics unit 12 for transmitting a driving distance information to the car ubiquitous center 20 and requesting a charge reservation to the car ubiquitous center 20 that receives the location information from the electric charging station 30 located within the driving distance ;
A battery management system 14 for providing battery SOC information of an electric vehicle to the telematics unit 12; And
It includes an input and output unit for displaying the current location information of the electric vehicle and the current state of the electric charging station and providing the driver's input data to the telematics unit 12,
The telematics unit 12 outputs a charging alarm when one electric charging station is located within a driving range regardless of the battery SOC level. delete The method according to claim 1,
The telematics unit 12, when two or more charging stations are located within the driving range, calculates and outputs the current position of the electric vehicle, the distance between the charging station and the charging standby time, and outputs the driving range. Electric charging station automatic search system. A vehicle information transmission step of calculating a driving distance through the current position of the electric vehicle 10 and the battery management system 14 and transmitting the calculated distance to the vehicle ubiquitous center 20;
Regardless of the battery SOC level of the electric vehicle 10 from the vehicle ubiquitous center 20, which receives information on the charging status and location of the plurality of electric charging stations 30, An electric charging station display step of displaying information;
And a charging alarm step of displaying and alerting the electric charging station if the number of electric charging stations is one within the driving range. The method of claim 4,
The electric charging station automatic search method within an electric vehicle traveling range, characterized in that it further comprises a guide step for guiding the electric charging station. The method of claim 4,
After the charging station display step, if the number of charging stations within the driving range is two or more, and the driver receives the charge by indicating whether to recharge the driver through the input and output unit, the priority and the standby time by calculating the distance and standby time with the charging station A list display step of displaying a list of electric charging stations;
A reservation step of transmitting the information and the reservation contents of the electric vehicle to the car ubiquitous center when the reservation is requested through the input / output unit in the list;
The vehicle number information of the electric vehicle applying for the reservation is transmitted to the electric charging station to apply for the reservation, and receives the reservation confirmation content information from the vehicle ubiquitous center 20 which receives the confirmation signal of the applied reservation. The electric charging station automatic search method within the electric vehicle driving range, characterized in that it further comprises a reservation confirmation step of displaying. The method of claim 6,
The electric charging station automatic search method within the electric vehicle driving range, characterized in that it further comprises a guide step for guiding the reserved electric charging station.

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