Electric vehicle charging control system and control method

Abstract

The technical solution adopted by the present invention is an electric vehicle charging control system, the main points of which are: it is composed of a charging station, a network platform, a smart card and a mobile terminal; the charging station has multiple charging piles, a relay station, and a controller, the relay station communicates with multiple charging piles at the same time through a wireless communication module, the relay station and the controller are wired communication, the controller and the network platform are connected through a 4G network, the network platform and the mobile terminal are connected through a 4G network, the controller has a 4G module that can communicate with the network platform, the charging pile has a QR code that can be scanned by a mobile terminal, and the charging pile and the smart card use contactless communication. A relay station is set between the charging pile and the controller, so that the charging station installed in a weak signal area such as a basement can charge normally; on the other hand, a 4G module is set on the controller to communicate with the network platform, which can also ensure the normal use of the charging station in an open area with good signal.

Description

Technical Field

[0001] The invention belongs to the field of electric vehicles, and in particular relates to an electric vehicle charging station. Background Art

[0002] In public places, electric vehicle charging stations usually use a certain number of charging piles in an area, and charge by smart card, mobile terminal or coin. A socket is set on each shell, and each charging pile shell is also equipped with a main controller electrically connected to the socket, a billing device and a socket power supply device. This charging station has the following disadvantages: First, each charging pile of this charging station needs to be equipped with a controller. Since the main controller is expensive, the cost of building a charging station is high; second, many charging stations need to be built in basements and other places with poor signals. This charging station can only use smart cards or coins for charging and billing, which is inconvenient; third, whether the traditional charging pile socket is powered on is determined by human operation. If the charging plug is unplugged in advance, the socket will continue to be charged, wasting charging fees. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of existing charging stations that they cannot be built in places with poor signals and are expensive, and to provide an electric vehicle charging station that can work normally in places with poor signals and is low in cost.

[0004] The technical solution adopted by the present invention is an electric vehicle charging control system, the main points of which are: it is composed of a charging station, a network platform, a smart card and a mobile terminal; the charging station has multiple charging piles, a relay station, and a controller, the relay station communicates with multiple charging piles at the same time through a wireless communication module, the relay station and the controller are wired communication, the controller and the network platform are connected through a 4G network, the network platform and the mobile terminal are connected through a 4G network, the controller has a 4G module that can communicate with the network platform, the charging pile has a QR code that can be scanned by a mobile terminal, and the charging pile and the smart card use contactless communication.

[0005] A relay station is set up between the charging pile and the controller, and a smart card is used to approach the sensing area of ​​the charging pile for charging operations, so that charging stations installed in areas with weak signals such as basements can charge normally. On the other hand, a 4G module is set on the controller to communicate with the network platform, and a mobile terminal is used to scan the QR code on the charging pile for charging operations, which can also ensure the normal use of the charging station in open areas with good signals.

[0006] Each charging pile has a unique code. When the controller controls multiple charging piles at the same time, the signal transmitted between the controller and the charging piles contains the code to prevent control errors.

[0007] The charging pile is arranged within a range with the relay station as the center and the communication distance of the wireless communication module as the radius.

[0008] Such an arrangement enables multiple charging piles to be within the communication range of the relay station.

[0009] The charging pile has a charging control module and a charging state detection module. When the electric vehicle charging plug leaves the socket of the charging pile, the charging pile stops charging in time to prevent users from wasting charging fees.

[0010] The controller and the relay station are respectively provided with an RS485 interface I and an RS485 interface II, and the two are connected by a communication line of a certain length. The controller also has a control module.

[0011] Wired transmission is not limited by signals, and charging information can be transmitted to the relay station even in areas with weak signals such as basements.

[0012] The length of the communication line is 100 meters to 500 meters. On the basis of ensuring the quality of signal transmission, the length of the communication line is arranged as much as possible along the straight line of the building, or even arranged vertically along the wall of the building, so as to shorten the length of the communication line and reduce the construction cost of the charging system.

[0013] The controller also has a wireless communication module, and the controller controls multiple charging piles simultaneously through the wireless communication module. The distance between the controller and the charging piles is shorter than the communication distance of the wireless communication module.

[0014] The wireless communication module enables the controller to communicate directly with the charging pile. In an open area with good signals, the relay station can be eliminated, saving the construction cost of the charging station.

[0015] The control steps of the electric vehicle charging control system are:

[0016] S11: When the smart card is close to the charging pile, the charging pile receives a charging request and sends a power-on request signal to the relay station;

[0017] S12: After receiving the charging request signal from the charging pile via the relay station, the controller sends the user information and charging information to the network platform via the relay station, and simultaneously sends a power-on start signal to the corresponding charging pile via the relay station;

[0018] S13: The network platform sends the charging information to the mobile terminal of the corresponding user according to the received user information;

[0019] S14: The user can stop charging by operating the mobile terminal, or use a smart card to stop charging, or directly unplug the electric vehicle to stop charging, and execute the corresponding deduction process.

[0020] Smart cards are used to draw electricity, and the relay station serves as a communication intermediary between the charging pile and the controller. Even the charging pile built in the basement can be charged normally, and mobile terminals can be used for charging operations and payment of charging fees.

[0021] Another control step of the electric vehicle charging control system is:

[0022] S21: The relay station transmits the received user information and charging information to the controller via RS485 interface II and the communication line;

[0023] S22: The control module I of the controller processes the information received by the RS485 interface I, controls the corresponding charging pile to be powered on, and sends the user information and charging information to the 4G module;

[0024] S23: The 4G module sends the user information and charging information to the network platform.

[0025] Wired communication is used between the relay station and the controller, with a long transmission distance, not limited by signals and obstacles, and can effectively transmit information to the relay station in various environments; the 4G module and RS485 interface I work together to send user information and charging information to the network platform in a timely and complete manner.

[0026] The third control step of the electric vehicle charging control system is:

[0027] S11: The user uses a mobile terminal to scan the QR code and operates the mobile terminal to send a charging request signal and a charging pile code to the network platform;

[0028] S12: The network platform sends the charging pile code and charging request signal to the controller via the 4G network;

[0029] S13: The controller controls the corresponding charging pile to be powered on according to the information received by the 4G module;

[0030] S14: The user can stop charging by operating the mobile terminal, or use a smart card to stop charging, or directly unplug the electric vehicle to stop charging, and execute the corresponding deduction process.

[0031] A wireless communication module is set on the controller. When the charging station is set up outdoors or in an open area with good signals, the relay station can be eliminated, allowing the controller to communicate directly with the charging pile, reducing the construction cost of the charging station.

[0032] The advantages of the present invention are: 1. Only one controller is needed for a charging station to operate multiple charging piles, and the construction cost of the charging station is low; 2. By using smart cards, wireless communication modules and relay stations, the charging piles can receive charging request signals and communicate with the network platform, so the charging stations can be built in places with no signals or weak signals; 3. Each charging pile has a charging status detection module and a charging control module. When the electric vehicle charging plug is unplugged in advance, the charging pile stops charging in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of embodiment 1 of the present invention

[0034] Figure 2 This is a schematic diagram of a charging station according to an embodiment of the present invention.

[0035] Figure 3 A schematic diagram of the communication principle of a relay station in accordance with an embodiment of the present invention

[0036] Figure 4 This is a schematic diagram of the second embodiment of the present invention.

[0037] Figure 5 This is a schematic diagram of a charging station according to the second embodiment of the present invention.

[0038] Among them: 1-charging station, 11-controller, 111-control module I, 112-wireless communication module I, 113-RS485 interface I, 114-4G module, 12-charging pile, 121-control module II, 122-wireless communication module II, 123-charging timing module, 124-charging status detection module, 125-socket, 126-charging control module, 127-power module, 128-NFC card reader, 129-QR code, 2-relay station, 21-control module III, 22-wireless communication module III, 23-RS485 interface II, 3-network platform, 4-smart card, 5-mobile terminal. DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with the drawings. The enumerated embodiments can enable those skilled in the art to better understand the present invention, but do not limit the present invention in any form.

[0040] Embodiment 1

[0041] like Figure 1As shown, the present invention provides an electric vehicle charging control system and a control method thereof, including a charging station 1, a network platform 3, a smart card 4 and a mobile terminal 5, wherein the charging station 1 includes a controller 11, a relay station 2 and a plurality of charging piles 12 controlled by the controller 11. Contactless induction is used between the smart card 4 and the charging pile 12. When the smart card 4 is close to the card swiping area of ​​the charging pile 12, the charging pile 12 reads the user information on the smart card and responds to charging or canceling charging according to the actual situation. Data is transmitted between the controller 11 and the charging pile 12 through the relay station, and the specific data transmitted is user information and charging information. The mobile terminal 5 can read the corresponding charging information according to the user information, and can control the start, interruption, continuation and end of charging, and deduct the corresponding charging fee from the mobile terminal 5.

[0042] like Figure 2 As shown, the charging pile 12 is composed of a shell and a socket 125 arranged on the shell. The shell also has a charging control module 126, a charging state detection module 124, a charging timing module 122 and a wireless communication module II 122. The charging control module 126 controls the on and off of the socket circuit. The charging timing module 122 calculates the charging time of the electric vehicle according to the power-on time of the socket 124, and sends the charging time to the control module II 121. The charging state detection module 124 detects whether the electric vehicle plug is plugged in when the socket is powered. When the plug and the socket are not in contact, the timing is stopped in time to prevent the user's electricity bill from being wasted.

[0043] There is only one controller 11 in the charging station 1, and the controller 11 can control multiple charging piles 12 at the same time. The controller 11 and the charging pile 12 communicate through the relay station 2. Wireless communication is used between the relay station 2 and the charging pile 12. In this example, the wireless communication module can be WiFi, specifically, the wireless communication module III22 is installed on the relay station, and each charging pile is respectively equipped with a wireless communication module II122. In order to maximize the use of the area of ​​the charging station 1, the charging pile 12 is arranged in a circle with the relay station 2 as the center and the communication distance as the radius, and the charging pile 12 is arranged in a ring. Or other arrangements that can ensure normal communication between the charging pile 12 and the relay station 2. In order to distinguish each charging pile 12, each charging pile has a specific number. When the wireless communication module is used to send a signal between the charging pile 12 and the relay station 2, the charging pile number is attached, so that the relay station can communicate with a specific charging pile to prevent errors in the control of the charging pile.

[0044] The charging pile 12 also has an NFC card reader 128 for users to draw electricity. When the user uses a smart card 4 with an NFC module to approach the card swiping area of ​​the charging pile, the control module II 121 of the charging pile reads the user information and responds to charging or canceling charging according to the actual situation. The internal performance of the charging pile is that the control module II 121 controls the charging control module 126 to supply power to the socket or not. The timing module 122 performs charging timing.

[0045] like Figure 3 As shown, the relay station 2 is connected to the controller 11 by wire through the RS485 interface Ⅰ113, and the controller 11 includes an RS485 interface Ⅰ113, a 4G module 114 and a control module Ⅰ111. The RS485 interface Ⅰ113 is used to receive and send wired signals so that the wired signals are transmitted between the controller 11 and the charging pile 12. The control module Ⅰ111 is used to convert the wired signals and wireless signals received from the RS485 interface Ⅰ113 and the 4G module 114 to each other, and send the converted wireless signals to the 4G module 114, and the converted wired signals to the RS485 interface Ⅰ111. The 4G module 114 is used to send and receive information with the network platform 3 through the 4G network. The controller 11 also includes a wireless module Ⅰ112, which can communicate with the wireless communication module Ⅱ122. When the RS485 interface communication mode fails, the wireless communication module can be used for communication. It should be noted that if a wireless communication module is used for communication, it is necessary to ensure that the distance between the relay station 2 and the controller 11 is within the communicable range. The charging station 1 of the present invention can be built in areas with poor 4G signals such as basements. The controller 11 cannot communicate directly with the network platform 3 through 4G signals. By building a signal relay station 2, the controller is moved from the basement to the signal ground. The relay station 2 serves as a communication intermediary between the charging pile 12 and the controller 11, and the controller 11 can communicate with the charging pile 12 and the network platform 3 at the same time by converting wired signals to wireless signals. The RS485 interface I113 and the RS485 interface II23 are connected by a communication line. Limited by the attenuation of signal transmission, the length of the communication line can be up to one kilometer. In actual use, the length of the communication line can be appropriately reduced according to the pattern of the building. For example, the communication line is arranged vertically upward along the wall of the building, and only one hundred to two hundred meters of length is needed to transmit the signal to the area with good mobile signals. Wired transmission is not limited by mobile signals. As long as the length of the communication line is sufficient and the signal attenuation is within an acceptable range, the charging station can be arranged in any area. In this example, the length of the communication line is set to one hundred to five hundred meters according to actual conditions.

[0046] The specific operation is as follows: the user can only hold the smart card 4 close to the charging pile sensing area, and the charging pile receives the user information and charging request information and sends it to the controller 11. There are two specific sending paths: one is transmitted to the relay station 2 through the wireless communication module, and the RS485 interface II23 of the relay station 2 is wired to the controller 11. The control module I111 of the controller 11 sends the signal received by the RS485 interface I113 to the 4G module 114, and the 4G module 114 sends information to the network platform; the other is to send information to the wireless communication module I112 of the controller through the wireless communication module II122, and the control module I111 sends the information received by the wireless communication module I112 to the 4G module 113, and the 4G module 114 sends information to the network platform 3. At the same time, the controller 11 controls the socket 125 to be powered on. The user can view the charging information on the mobile terminal and perform operations such as ending charging and deducting fees. The smart card 4 can also be used to approach the charging pile sensing area to end charging.

[0047] Embodiment 2

[0048] like Figure 4 As shown, the difference from the first embodiment is that there is no relay station 2. In addition to the smart card in the first embodiment, the mobile terminal 5 can also directly communicate with the charging pile and perform related operations such as charging.

[0049] like Figure 5 As shown, the difference from the first embodiment is that a QR code 129 is provided on the outside of the charging pile 12, and the mobile terminal 5 performs charging and other related operations by scanning the QR code 129 with the number of the charging pile 12.

[0050] The specific operation is as follows: when using a QR code, the mobile terminal 5 scans the QR code 129 on the charging pile 12, and sends the charging pile 12 information and charging request information to the network platform 3. The network platform 3 sends the charging pile information and charging request information to the controller 11 through the 4G module 114. The controller 11 sends it to the scanned charging pile 12 through the wireless communication module I 112. The socket of the charging pile 12 is powered on and the timing starts, and the electric vehicle starts charging. During the charging process, the user can check the charging progress on the mobile terminal and perform operations such as ending charging or billing, or use the smart card 4 to approach the charging pile sensing area to end charging.

[0051] When the smart card 4 is used to approach the sensing area of ​​the charging pile, the charging pile receives the user information and the charging request information and sends it to the controller 11. The controller 11 controls the socket 125 to be powered on and sends the user information and the charging information to the network platform 3. The user can view the charging information on the mobile terminal and perform operations such as ending charging and deducting fees. The smart card 4 can also be used to end charging by approaching the sensing area of ​​the charging pile.

[0052] The remaining parts not described are the same as the prior art.

Claims

1. An electric vehicle charging control system, characterized in that: It is composed of a charging station (1), a network platform (3), a smart card (4) and a mobile terminal (5); the charging station (1) has a plurality of charging piles (12), a relay station (2) and a controller (11); the charging piles (12) and the relay station (2) are used to be built in an area with poor 4G signals; the relay station (2) communicates with the plurality of charging piles (12) simultaneously through a wireless communication module; the relay station (2) and the controller (11) are wired communications; the controller (11) and the network platform (3) are connected through a 4G network; the network platform (3) and the mobile terminal (5) are connected through a 4G network; the controller (11) 1) has a 4G module (114) capable of communicating with a network platform, the charging pile (12) and the smart card (4) adopt contactless communication; data is transmitted between the charging pile and the controller through a relay station, and the transmitted data is user information and charging information. The charging pile (12) is arranged within a range with the relay station (2) as the center and the communication distance of the wireless communication module as the radius. The controller (11) and the relay station (2) respectively have an RS485 interface I (113) and an RS485 interface II (23), and the two are connected by a communication line of a certain length. The controller (11) also has a control module I (111).

2. An electric vehicle charging control system according to claim 1, characterized in that: Each charging post (12) has a corresponding unique code on its surface.

3. The electric vehicle charging control system according to claim 1, characterized in that: The charging pile (12) has a charging state detection module (124) and a charging control module (126).

4. The electric vehicle charging control system according to claim 1, characterized in that: The length of the communication line is one hundred meters to five hundred meters.

5. A control method for an electric vehicle charging control system according to claim 2, characterized in that: The control steps are: S11: The user uses the smart card (4) to approach the charging pile (12), and the charging pile (12) receives the charging request and sends the charging request information and user information to the relay station (2) through the wireless communication module; S12: the relay station (2) transmits the received charging request information and user information to the controller (11) via the RS485 interface II (23) and the communication line; S13: The control module I (111) of the controller (11) sends the signal received by the RS485 interface I (113) to the 4G module (114), and the 4G module (114) sends the user information and charging information to the network platform (3), and at the same time sends a power-on start signal to the corresponding charging pile (12) via the relay station (2); S14: the network platform (3) sends the charging information to the mobile terminal (5) of the corresponding user according to the received user information; S15: The user can stop charging by operating the mobile terminal (5), or use the smart card (4) to stop charging, or directly unplug the electric vehicle to stop charging, and execute the corresponding deduction process.

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