Ground and basement combined distributed electric vehicle charging system

Abstract

The utility model belongs to the technical field of electric vehicle charging, and particularly relates to a ground and basement combined distributed electric vehicle charging system, which comprises a direct current charging pile, a running track, a jack box and a charging gun, the direct current charging piles are arranged on the ground and connected with a ground transformer substation, and the running tracks are laid above each row of parking spaces in the underground parking lot; the upper end of the running track is provided with a bus cable, jack boxes and a jack, one end of the bus cable is connected with the direct current charging pile, and the other end is connected with the plurality of jack boxes; the charging gun is provided with a plug pin used for being connected with the plug port, the charging gun is arranged on the operation track in a sliding mode through the rail hanging robot, and the operation track is provided with a sliding contact line for supplying power to the rail hanging robot. According to the utility model, the high-power direct-current charging equipment is placed on the ground, and the charging gun is placed in the basement, so that high-power rapid direct-current charging can be realized in the underground parking lot.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle charging, and in particular relates to a distributed electric vehicle charging system combining the ground and the basement. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] A charging pile is a device that provides power for electric vehicles. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles. With the development of new energy vehicles, people have an increasing demand for public charging piles. Public charging piles are divided into AC charging piles and DC charging piles by type.

[0004] DC charging piles have a fast charging speed and have successfully solved the problem of long charging time for electric vehicles. DC charging piles bypass the charger on the electric vehicle and charge the battery directly, which greatly shortens the charging time. In addition, DC charging piles have the advantages of high charging efficiency and little impact on battery life. However, as the charging time decreases, the power of DC charging piles is also increasing. According to the "Design Standards for Electric Vehicle Charging and Swapping Facilities System", electric vehicle charging equipment with a rated power greater than 7kW should not be located in buildings.

[0005] Therefore, in underground parking lots where vehicles are concentrated, only slow charging piles with low power (i.e. AC charging piles) can be installed at fixed locations. This leads to problems such as long charging time for electric vehicles and the need for fixed charging parking spaces. Moreover, there are many parking spaces in underground parking lots. If charging piles are installed near each parking space, the cost will be high and the charging piles cannot be fully utilized. Utility Model Content

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a distributed electric vehicle charging system that combines the ground and the basement. A DC charging pile is placed on the ground and connected to a charging gun located in an underground parking lot through a bus cable. High-power DC charging can be achieved for electric vehicles in non-fixed parking spaces in the underground parking lot, solving the problem of long charging time when AC charging piles are installed in existing underground parking lots.

[0007] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0008] The first aspect of the utility model provides a distributed electric vehicle charging system combining ground and basement, comprising: a DC charging pile, a running track, a plug-in box and a charging gun;

[0009] The DC charging pile is arranged on the ground and connected to the ground substation, and the running track is laid above each row of parking spaces in the underground parking lot;

[0010] A busbar cable and a plug-in box are provided at the upper end of the running track, and a plug-in interface is provided on the lower end surface of the running track. The connecting line of the plug-in box passes through the internal through hole of the running track and is connected to the plug-in interface; one end of the busbar cable is connected to the DC charging pile, and the other end is connected to multiple plug-in boxes;

[0011] The charging gun is provided with a pin for connecting to a socket, and the charging gun is slidably arranged on a running track through a rail-hanging robot, and the running track is provided with a busbar for supplying power to the rail-hanging robot.

[0012] Furthermore, the running track is an I-shaped structure, and busbars are provided on both sides of the lower lower track of the I-shaped structure; power supply is achieved after the slider on the rail-hanging robot contacts the busbars.

[0013] Furthermore, first position switches are provided at both ends of the running track, and a plurality of second position switches arranged in sequence are provided on the running track, and the second position switches, the plug-in boxes, the plug-in interfaces and the parking spaces are arranged in a one-to-one correspondence.

[0014] Furthermore, the first position switch and the second position switch are both infrared switches, and are both electrically connected to the busbar.

[0015] Furthermore, the number of the rail-hanging robots is two, and the initial positions of the two rail-hanging robots are respectively located at the first position switches at both ends of the running track.

[0016] Furthermore, the rail-hanging robot is provided with a lifting device, and the lifting device is used to drive the pins of the charging gun to move to achieve the connection between the pins and the socket.

[0017] Furthermore, the lifting device includes a first DC motor and a screw transmission assembly, the screw transmission assembly is threadedly connected to the pin, and the first DC motor is used to drive the screw transmission assembly to rotate.

[0018] Furthermore, the rail-hanging robot is driven by a second DC motor, which is provided with a controller, and the controller is respectively connected to the first DC motor, the second DC motor and the infrared switch.

[0019] Furthermore, the rail-hanging robot includes a hanging arm and a robot body, the hanging arm is provided with rollers, and the rollers are arranged in contact with the running track; the lifting device and the controller are arranged on the robot body.

[0020] Furthermore, it also includes a charging cloud platform, a mobile terminal and an underground main controller. The underground main controller is communicatively connected to the rail-hanging robot controller, the charging cloud platform and the internal controller of the DC charging pile respectively, and the mobile terminal is communicatively connected to the charging cloud platform.

[0021] One or more of the above technical solutions have the following beneficial effects:

[0022] (1) The utility model places a high-power DC charging device on the ground, places a charging gun in a basement, and connects a DC charging pile to a charging gun in an underground parking lot via a bus cable, thereby achieving high-power DC charging in the underground parking lot.

[0023] (2) The utility model installs a charging gun on a rail-hanging robot, installs a position switch on a running track, uses the position switch to obtain a position signal of the rail-hanging robot, and allows the rail-hanging robot to slide on the track, thereby achieving coverage of multiple parking spaces by installing only a small number of rail-hanging robots on the running track.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0026] Figure 1 This is a schematic diagram of a distributed electric vehicle charging system combining the ground and the basement according to Example 1.

[0027] Figure 2 This is an overall schematic diagram of a distributed electric vehicle charging system combining the ground and the basement according to Example 1.

[0028] Figure 3 This is a schematic diagram of the structure of the running track of Example 1.

[0029] Figure 4 This is a side view of the running track of Example 1.

[0030] Figure 5 This is a schematic diagram of the plug interface of Example 1.

[0031] Figure 6 This is a diagram of the internal structure of the rail-hanging robot of Example 1.

[0032] Figure 7 for Figure 6 A magnified view of the structure in the middle.

[0033] Figure 8 This is a structural diagram of the lifting device of Example 1.

[0034] Fig. 9 This is a schematic diagram of the distribution of the plug-in boxes in Example 1.

[0035] Fig.10 for Fig. 9 Enlarged view of the structure at point B in the middle.

[0036] Fig.11 This is a simulation diagram of charging parking space No. 2 in Example 1.

[0037] In the figure, 1. running track, 101 sliding wire, 102 position switch, 103 bus cable, 104, plug-in box, 105 plug interface, 2. DC charging pile, 3. rail-hanging robot, 301 lifting device, 3011 first DC motor, 3012 screw transmission assembly, 302 controller, 303 roller, 304 second DC motor, 3041 second DC motor connecting wire, 305 slide, 3051 slide connecting wire, 306 pin. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0039] Embodiment 1

[0040] like Figure 1 , Figure 2 As shown, the utility model proposes a distributed electric vehicle charging system combining the ground and the basement, comprising: a running track 1, a DC charging pile 2, a rail-hanging robot 3 and a charging gun; the DC charging pile 2 is arranged on the ground and connected to the ground substation, and the running track 1 is laid above each row of parking spaces in the underground parking lot;

[0041] A busbar cable 103 is arranged in the groove at the upper end of the running track 1, and a plug-in box 104 is arranged above the groove. One end of the busbar cable 103 is connected to the DC charging pile 2, and the other end is connected to multiple plug-in boxes 104; a plug-in interface 105 is arranged on the lower end surface of the running track 1, and the plug-in interface 105 is connected to the plug-in box 104;

[0042] A busbar 101 for supplying power to the rail-hanging robot 3 is provided on the running track 1 . A charging gun is slidably arranged on the running track 1 through the rail-hanging robot 3 . A plug pin for connecting to a plug interface 105 is provided on the charging gun.

[0043] In order to avoid installing high-power DC charging equipment in the underground parking lot, the utility model installs a high-power DC charging pile next to the ground substation. It only needs to extend the charging gun connecting line until it is connected to the bus cable laid underground, so that high-power DC charging can be achieved in the underground parking lot.

[0044] As a further technical solution, Figure 3 As shown, the running track is an I-shaped structure, including an upper track and a lower track arranged in parallel and a middle track arranged between the upper track and the lower track. The bus cable 103 for supplying power to the charging gun is laid on the upper surface of the upper track of the I-shaped structure. A plug-in box 104 is installed above the running track at the corresponding position of each parking space, and the bus cable passes through each plug-in box 104 to realize direct power supply from the plug-in box.

[0045] The running track is provided with a through hole connecting the upper and lower ends of the running track. The through hole, the plug-in box and the parking space are arranged one by one. The connection port of the plug-in box is introduced under the track through the through hole in the track corresponding to each parking space, which is convenient for the robot to obtain power. Figure 5 As shown, the socket is a terminal row socket, and the long pins connected to the charging gun line directly draw power from the socket through a lifting device.

[0046] Grooves are provided on both sides of the lower track of the I-shaped structure. Busbars 101 for supplying power to the rail-hanging robot are provided in the grooves. The busbars 101 are in contact with the sliding pieces of the rail-hanging robot to realize power supply.

[0047] like Figure 6 , Figure 7 As shown, the rail-hanging robot includes a hanging arm and a main body. The hanging arm of the robot has two rollers 303, which are arranged in contact with the running track 1, and the two rollers are respectively arranged on both sides of the busbar on the running track. The rail-hanging robot slides on the running track by means of the rollers 303, which are driven by a DC motor 304, and a slide 305 is arranged between the two rollers 303, which is in contact with the busbar 101 to supply power to the rail-hanging robot.

[0048] The main body of the rail-hanging robot is provided with a lifting device 301 and a controller 302. The controller 302 is connected to the mobile lifting device 301 and the DC motor in the rail-hanging robot. The other end of the slide 305 is connected to the controller 302 and the DC motor 304 through a slide connecting line 3051. The DC motor 304 is connected to the controller 302 through a DC motor connecting line 304.

[0049] In order to improve the stability of the rail-mounted robot, the rail-mounted robot uses a busbar to obtain electricity. The busbar is installed in the groove of the track to ensure that the robot has a stable power supply. The rail-mounted robot is driven by a DC motor, and the movement of the DC motor is controlled by the rail-mounted robot controller, thereby controlling the movement of the rail-mounted robot, thereby achieving the goal of using fewer charging devices to cover more parking spaces.

[0050] As a further technical solution, Figure 8As shown, the rail-hanging robot is provided with a lifting device 301 , on which a pin 306 connected to the charging gun is provided. The lifting device 301 is used to drive the pin 306 to move so as to achieve connection between the pin 306 and the socket 105 .

[0051] The lifting device 301 includes a DC motor and a screw transmission assembly. The output shaft of the DC motor is connected to the screw transmission assembly, and the screw transmission assembly is threadedly connected to the pin 306. The DC motor drives the screw transmission assembly to rotate to achieve the rise or fall of the pin 306.

[0052] The pin 306 is a long pin, which is convenient for connecting to the socket 105 under the running track. The charging gun connection line is connected to the pin of the lifting device. After the robot reaches the position, the internal lifting device can connect the charging gun to the socket for power supply.

[0053] As a further technical solution, Fig. 9 , Fig.10 As shown, a plurality of position switches 102 arranged in sequence are provided on the running track 1, and the position switch 102 includes a first position switch and a second position switch.

[0054] There are two first position switches, which are respectively arranged at both ends of the running track 1; there are multiple second position switches, which are arranged in sequence on the running track; both the first position switch and the second position switch are infrared sensors, which are used to detect whether a track-hanging robot passes by the current position; and the second position switch, the plug-in box, the plug-in interface and the parking space are arranged in a one-to-one correspondence.

[0055] There are two rail-hanging robots, and their initial positions are located at the first position switches at both ends of the running track. Position switches are distributed at the starting position and the corresponding position of each parking space. Infrared sensors are used as position switches. The infrared sensors are powered by the sliding wire of the track and use wireless transmission of switch signals.

[0056] As a further technical solution, it also includes an underground main controller, a charging cloud platform and a mobile terminal; the underground main controller is communicated with the rail-hanging robot controller, the charging cloud platform and the internal controller of the DC charging pile respectively, and the mobile terminal is communicated with the charging cloud platform.

[0057] The underground main controller and several rail-hanging robot controllers use a master-slave communication mode. The connection network between the underground main controller and several charging piles is a LORAWAN network or a ZIGBEE network; at the same time, in order to save wiring harnesses, CAN bus signals are transmitted wirelessly, the underground main controller communicates with the charging cloud platform, and the charging cloud platform communicates with the user terminal.

[0058] The user uses a mobile terminal to scan the QR code next to the parking space to log in to the charging cloud platform, selects the parking space number and charging time (or automatically stops when fully charged) on the charging cloud platform to place an order, and the charging cloud platform will send the parking space number and charging time to the underground control host, which will send them to the charging pile and rail-hanging robot on the ground respectively, controlling the rail-hanging robot to move to the corresponding position to charge the vehicle at the corresponding position.

[0059] like Fig.11 As shown, the working principle of the utility model is: the user uses a mobile terminal to scan the QR code next to the parking space to select the charging parking space, charging time and other charging information. The charging cloud platform receives the charging information, parses it and sends it to the underground main controller. The underground main controller sends the control information to the rail-hanging robot controller of the corresponding parking space. The rail-hanging robot controller controls the rail-hanging robot to move to the corresponding parking space.

[0060] When the rail-hanging robot reaches the designated parking space, it will touch the position switch. When the rail-hanging robot controller receives the position switch signal, it determines whether it has moved to the corresponding parking space. If so, the rail-hanging robot stops moving, and the lifting device on it drives the pin to start rising until the long pin is connected to the socket under the running track to power the charging gun; after that, the owner manually inserts the charging gun into the charging port of the vehicle for charging.

[0061] After charging is completed, a charging completion notification is sent to the car owner, and the connection between the charging gun and the bus cable plug-in box is disconnected. After the charging gun is unplugged, the rail-hanging robot returns to the starting point and waits for the next charging task.

[0062] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A distributed electric vehicle charging system combining ground and basement, characterized in that: include: DC charging piles, running tracks, plug-in boxes and charging guns; The DC charging pile is arranged on the ground and connected to the ground substation, and the running track is laid above each row of parking spaces in the underground parking lot; A busbar cable and a plug-in box are provided at the upper end of the running track, and a plug-in interface is provided on the lower end surface of the running track. The connecting line of the plug-in box passes through the internal through hole of the running track and is connected to the plug-in interface; one end of the busbar cable is connected to the DC charging pile, and the other end is connected to multiple plug-in boxes; The charging gun is provided with a pin for connecting to a socket, and the charging gun is slidably arranged on a running track through a rail-hanging robot, and the running track is provided with a busbar for supplying power to the rail-hanging robot.

2. A distributed electric vehicle charging system combining ground and basement according to claim 1, characterized in that: The running track is an I-shaped structure, and busbars are respectively arranged on both sides of the lower lower track of the I-shaped structure; power supply is achieved after the sliding piece on the rail-hanging robot contacts the busbars.

3. The distributed electric vehicle charging system combining ground and basement according to claim 1 is characterized in that: First position switches are provided at both ends of the running track, and a plurality of second position switches arranged in sequence are provided on the running track. The second position switches, the plug-in boxes, the plug-in interfaces and the parking spaces are arranged in a one-to-one correspondence.

4. The distributed electric vehicle charging system combining ground and basement according to claim 3 is characterized in that: The first position switch and the second position switch are both infrared switches, and are both electrically connected to the busbar.

5. The distributed electric vehicle charging system combining ground and basement according to claim 3 is characterized in that: There are two rail-hanging robots, and the initial positions of the two rail-hanging robots are respectively located at the first position switches at both ends of the running track.

6. The distributed electric vehicle charging system combining ground and basement according to claim 1 is characterized in that: The rail-hanging robot is provided with a lifting device, and the lifting device is used to drive the pins of the charging gun to move so as to achieve the connection between the pins and the socket.

7. A distributed electric vehicle charging system combining ground and basement according to claim 6, characterized in that: The lifting device comprises a first DC motor and a screw transmission assembly, wherein the screw transmission assembly is threadedly connected to the pin, and the first DC motor is used to drive the screw transmission assembly to rotate.

8. The distributed electric vehicle charging system combining ground and basement according to claim 7 is characterized in that: The rail-hanging robot is driven by a second DC motor, which is provided with a controller, and the controller is respectively connected to the first DC motor, the second DC motor and the infrared switch.

9. The distributed electric vehicle charging system combining ground and basement according to claim 6 is characterized in that: The rail-hanging robot comprises a hanging arm and a robot body, wherein the hanging arm is provided with rollers, and the rollers are arranged in contact with the running track; and the lifting device and the controller are arranged on the robot body.

10. The distributed electric vehicle charging system combining ground and basement according to claim 1 is characterized in that: It also includes a charging cloud platform, a mobile terminal and an underground main controller. The underground main controller is respectively communicated with the rail-hanging robot controller, the charging cloud platform and the internal controller of the DC charging pile, and the mobile terminal is communicated with the charging cloud platform.

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