A time-division multiplexing one-to-many electric vehicle sharing charging pile and its control method

Abstract

The present invention discloses a time-division multiplexing one-to-many electric vehicle shared charging pile, which includes a charging pile body. A groove is dug in the ground, and a wireless charging transmitting board is installed in each groove. Each wireless charging transmitting board is electrically connected to the charging pile body through a connecting wire, and a circuit switch connected to the control end of each connecting wire is arranged in the charging pile body; a PLC integrated circuit board is arranged in the charging pile body, and a wireless charging main control module, a time-division multiplexing coding module, a timing recording module, a counting module and a circuit on-off execution module are integrated on the PLC integrated circuit board; the present invention facilitates the simultaneous charging of a large number of vehicles and improves the utilization efficiency of the charging pile; the charging states of the wireless transmitting charging boards are controlled in time periods, which ensures the simultaneous charging of multiple vehicles, increases the number of wireless transmitting charging boards connected to a single charging pile, and improves the utilization efficiency of the charging pile.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and particularly to a time-division multiplexing one-to-many electric vehicle shared charging pile and its control method. Background Technique

[0002] An electric vehicle (BEV) refers to a vehicle that uses an on-vehicle power source and drives the wheels with an electric motor, meeting the requirements of road traffic and safety regulations. A charging pile is similar in function to a fuel dispenser in a gas station. It can be fixed on the ground or on a wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential community parking lots or charging stations. It can charge various models of electric vehicles according to different voltage levels. 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.

[0003] Existing charging piles generally charge one by one, with one charging pile equipped for each charging space, which affects the use efficiency of the charging pile and occupies a large amount of ground space. At the same time, during the charging process of the charging pile, charging is generally carried out through a plug, and the process is cumbersome. Therefore, it is necessary to design a one-to-many charging pile and realize wireless charging of vehicles at the same time. Summary of the Invention

[0004] The purpose of the present invention is to provide a time-division multiplexing one-to-many electric vehicle shared charging pile and its control method to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A time-division multiplexing one-to-many electric vehicle shared charging pile, including a charging pile body fixed on the ground. A number of grooves are dug in the ground, and a wireless charging transmitting board is installed in each groove. Each wireless charging transmitting board is electrically connected to the charging pile body through a connecting wire. A circuit switch connected to the control end of each connecting wire is arranged in the charging pile body; A PLC integrated circuit board is arranged in the charging pile body. A wireless charging main control module, a time-division multiplexing coding module, a timing recording module, a counting module, and a circuit on-off execution module respectively connected to the control end of the wireless charging main control module are integrated on the PLC integrated circuit board. The circuit on-off execution module is connected to the control end of each circuit switch.

[0006] The present invention also provides a control method for a time-division multiplexing one-to-many electric vehicle shared charging pile. The multiple wireless charging transmitting boards are divided into two groups, A and B. When charging a vehicle, the time-division multiplexing coding module controls the opening and closing states of the multiple wireless charging transmitting boards, including the following two control forms:

[0007] S1: The wireless charging transmitter boards in rows A and B are controlled in time segments, that is, the wireless charging transmitter boards in group A first maintain the charging state for a set time length and then turn off, and then the wireless charging transmitter boards in group B are started to maintain the charging state for a set time length; reasonably allocate the charging time segments to ensure that the vehicles in both rows A and B can obtain sufficient power supply.

[0008] S2: Set the number of vehicles that can be charged simultaneously by the charging pile. According to the parking order of the vehicles, control the charging state of the wireless charging transmitter boards in batches, set the charging time for each batch of vehicles, divide a day into multiple charging time periods, and realize the batch power supply for multiple vehicles.

[0009] The present invention also provides another control method for a time-division multiplexing one-to-many electric vehicle sharing charging pile. The allocation of the charging pile body and the wireless charging transmitter boards includes the following two methods:

[0010] S1: The output voltage of the charging pile body is equal to the voltage of a single wireless charging transmitter board, and multiple wireless charging transmitter boards take turns to charge at different time periods;

[0011] S2: The output voltage of the charging pile body is equal to the total voltage of the multiple connected wireless charging transmitter boards, and multiple wireless charging transmitter boards can charge at the same time.

[0012] As a preferred solution of the present invention, a layer of protection board is laid on the inner wall of the groove. A support platform board is installed at the bottom of the groove through support columns. An elevating board is arranged above the support platform board. An electric telescopic rod is installed on both sides of the support platform board at the bottom of the groove respectively. The output end of the electric telescopic rod is fixedly connected to the bottom of the elevating board upward, and the control end of the electric telescopic rod is connected to the PLC integrated circuit board.

[0013] As a preferred solution of the present invention, guiding sliding grooves with opposite openings are respectively arranged on the inner walls of both sides of the groove. Both ends of the elevating board extend outward and are inserted into the corresponding guiding sliding grooves to slide, and the bottom of the guiding sliding groove is flush with the upper surface of the support platform board.

[0014] As a preferred solution of the present invention, a distance sensor and an infrared sensor are respectively installed inside the tops of both sides of the protection board. The output end of the distance sensor is connected to the circuit on-off execution module, and the output ends of the infrared sensor are respectively connected to the timing recording module and the counting module.

[0015] As a preferred solution of the present invention, the bottom of the wireless charging transmitter board is fixed on the mounting board. The mounting board and the elevating board are connected through a connecting rod. A layer of sealed waterproof layer is covered on the side surface of the wireless charging transmitter board.

[0016] As a preferred embodiment of the present invention, positioning intercepting strips are respectively arranged on the ground corresponding to each parking space where the grooves are located. A positioning plug inserted into the ground is installed at the bottom of the positioning intercepting strip, and pull rings are installed at both ends of the positioning intercepting strip.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, a plurality of connecting lines installed on the charging pile body are connected to the wireless charging transmitting board, which facilitates simultaneous charging of multiple vehicles, improves the utilization efficiency of the charging pile, and greatly reduces the ground occupation space.

[0019] 2. In the present invention, the infrared induction switch is used to sense the arrival of the vehicle, and the positioning intercepting strip arranged on the parking space is used to limit the parking position of the vehicle, which facilitates the rapid positioning and alignment of the vehicle. At the same time, the position of the positioning intercepting strip is adjustable to facilitate positioning and use for different vehicle models; the distance sensor and the electric telescopic rod are used in cooperation to control the height of the wireless charging transmitting board, which facilitates signal connection with the on-vehicle electromagnetic receiving board of different models of vehicles, and has a wide adaptation range.

[0020] 3. In the present invention, the wireless charging transmitting board is arranged in the groove below the ground, which does not occupy the ground space during idle time and does not affect the beauty; at the same time, by inserting both ends of the lifting plate into the guiding sliding grooves on the inner wall of the groove, the stable lifting of the wireless charging transmitting board is facilitated.

[0021] 4. In the present invention, a wireless charging main control module and a time-division multiplexing coding module, a timing recording module, a counting module, and a circuit on-off execution module respectively connected to the control end of the wireless charging main control module are integrated on the PLC integrated circuit board, and the charging states of each wireless transmitting charging board are controlled in time periods, which ensures simultaneous charging of multiple vehicles and increases the number of wireless transmitting charging boards connected to a single charging pile, improving the utilization efficiency of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the specific connection structure between the wireless charging transmitting board and the groove of the present invention;

[0024] Figure 3 is a schematic diagram of the module connection structure of the PLC integrated circuit board of the present invention.

[0025] In the figure: 1, the main body of the charging pile; 2, the ground; 3, the wireless charging transmitting board; 4, the connecting wire; 5, the circuit switch; 6, the PLC integrated circuit board; 7, the groove; 8, the protection board; 9, the support column; 10, the support platform board; 11, the lifting board; 12, the electric telescopic rod; 13, the guiding sliding groove; 14, the distance sensor; 15, the infrared sensor; 16, the sealing waterproof layer; 17, the mounting plate; 18, the connecting rod; 19, the positioning interception strip; 20, the positioning pin; 21, the pull ring. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0028] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Example 1: Please refer to Figures 1-3, the present invention provides a technical solution: a time-division multiplexing one-to-many electric vehicle shared charging pile, including a charging pile body 1, the charging pile body 1 is fixed on the ground 2, and several grooves 7 are dug in the ground 2. A wireless charging transmitting board 3 is installed in each groove 7, and each wireless charging transmitting board 3 is electrically connected to the charging pile body 1 through a connecting wire 4. A circuit switch 5 connected to the control end of each connecting wire 4 is arranged in the charging pile body 1; a PLC integrated circuit board 6 is arranged in the charging pile body 1, and a wireless charging main control module, a time-division multiplexing coding module, a timing recording module, a counting module, and a circuit on-off execution module respectively connected to the control end of the wireless charging main control module are integrated on the PLC integrated circuit board 6. The circuit on-off execution module is connected to the control end of each circuit switch 5.

[0030] Further, a protective board 8 is laid on the inner wall of the groove 7. A support platform plate 10 is installed at the bottom of the groove 7 through a support column 9. A lifting plate 11 is arranged above the support platform plate 10. An electric telescopic rod 12 is installed on both sides of the support platform plate 10 at the bottom of the groove 7. The output end of the electric telescopic rod 12 is fixedly connected to the bottom of the lifting plate 11 upward, and the control end of the electric telescopic rod 12 is connected to the PLC integrated circuit board 6.

[0031] Further, guide sliding grooves 13 with opposite openings are respectively arranged on both inner walls of the groove 7. Both ends of the lifting plate 11 extend outwards and are inserted into the corresponding guide sliding grooves 13 to slide, and the bottom of the guide sliding grooves 13 is flush with the upper surface of the support platform plate 10.

[0032] Further, a distance sensor 14 and an infrared sensor 15 are respectively installed inside the top of both sides of the protective board 8. The output end of the distance sensor 14 is connected to the circuit on-off execution module, and the output ends of the infrared sensor 15 are respectively connected to the timing recording module and the counting module.

[0033] Further, the bottom of the wireless charging transmitting board 3 is fixed on the mounting plate 17. A connecting rod 18 is connected between the mounting plate 17 and the lifting plate 11. A sealing waterproof layer 16 is covered on the side surface of the wireless charging transmitting board 3.

[0034] Further, positioning interception strips 19 are respectively arranged on the ground 2 corresponding to the parking spaces where each groove 7 is located. A positioning plug 20 embedded in the ground 2 is installed at the bottom of the positioning interception strip 19, and pull rings 21 are installed at both ends of the positioning interception strip 19.

[0035] Working principle: When in use, a positioning and intercepting strip 19 is installed at the parking space corresponding to each wireless charging transmitter board 3. The positioning and intercepting strip 19 is used to limit the front wheels of the car. The position of the positioning and intercepting strip 19 can be set according to the vehicle type, so that when the front wheels of the car reach the positioning and intercepting strip 19, the on-vehicle electromagnetic plate at the bottom of the car is directly above the wireless charging transmitter board 3. When charging while parked, after the car stops in place, the infrared sensor 15 senses the vehicle docking signal and sends it to the timing recording module and counting module of the PLC integrated circuit board 6 to sort and count the wireless charging transmitter boards 3 in the parking space. The distance sensor 14 senses the distance signal between the wireless charging transmitter board 3 and the on-vehicle electromagnetic plate at the bottom of the car and sends it to the wireless charging main control module of the PLC integrated circuit board 6. The wireless charging main control module controls the electric telescopic rod 12 to start, raises the wireless charging transmitter board 3 to the set height, and maintains the optimal charging distance. Then the circuit on-off execution module controls the corresponding circuit switch 5 to turn on for charging.

[0036] Embodiment 2: The multiple wireless charging transmitter boards 3 are divided into two groups, namely Group A and Group B. When charging while parked, the time-division multiplexing coding module controls the on-off states of the multiple wireless charging transmitter boards 3, which can be divided into two control forms:

[0037] One: The wireless charging transmitter boards 3 in rows A and B are controlled in time slots, that is, the wireless charging transmitter boards 3 in Group A first maintain the charging state for a set time length and then turn off, and then the wireless charging transmitter boards 3 in Group B are started to maintain the charging state for a set time length; the charging time slots are reasonably allocated to ensure that the vehicles in both rows A and B can obtain sufficient power supply.

[0038] Two: Set the number of vehicles that can be charged simultaneously by the charging pile. According to the parking order of the vehicles, control the charging states of the wireless charging transmitter boards 3 in batches, set the charging time for each batch of vehicles, divide a day into multiple charging time periods, and realize the batch power supply for multiple vehicles, greatly improving the use efficiency of the charging pile.

[0039] Embodiment 3: In actual application, such as in the fields of shared cars, charging stations, parking lots, etc., assuming that the voltage of each wireless charger is 7 kv, and there are 5 households sharing a power station, and the electric vehicle is charged once every 5 days, there are two solutions:

[0040] Solution 1: The charging pile body 1 outputs a voltage of 7 kv, and the five households take turns charging at different times; each household only needs to park in its own garage. When charging is required, give a signal to the total controller, and the total controller will let the charging pile body 1 supply power to the wireless charging transmitter board 3 of this household; the connection line between the charging pile body 1 and the wireless charging transmitter board 3 is set underground.

[0041] This method has low requirements for the charging pile body 1 and saves costs, but it requires the households to coordinate their electricity usage times.

[0042] Solution 2: The output voltage of the charging pile body 1 is 35 kv, and five households can charge at the same time. Each household only needs to park in its own garage. When charging is required, a signal is sent to the main controller, and the main controller will make the charging pile body 1 supply power to the wireless charging transmitter board 3 of this household. The connection line between the charging pile body 1 and the wireless charging transmitter board 3 is set underground.

[0043] This method has high requirements for the power station, but it saves costs compared with the scheme of equipping each wireless charging transmitter board 3 with a power station, and can be adjusted according to actual needs.

[0044] It should be noted that the entire device is controlled through the main control button. Since the devices matched with the control button are common devices and belong to the existing Changshu technology, the electrical connection relationship and the specific circuit structure are not described herein again.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A time-division multiplexing one-to-many electric vehicle sharing charging pile, characterized in that, It includes a charging pile body (1), the charging pile body (1) is fixed on the ground (2), several grooves (7) are dug in the ground (2), and a wireless charging transmitter board (3) is installed in each groove (7). Each wireless charging transmitter board (3) is electrically connected to the charging pile body (1) through a connecting wire (4). A circuit switch (5) connected to the control end of each connecting wire (4) is arranged in the charging pile body (1); a PLC integrated circuit board (6) is arranged in the charging pile body (1). A wireless charging main control module, a time-division multiplexing coding module, a timing recording module, a counting module, and a circuit on / off execution module respectively connected to the control end of the wireless charging main control module are integrated on the PLC integrated circuit board (6). The circuit on / off execution module is connected to the control end of each circuit switch (5).

2. A control method for a time-division multiplexing one-to-many electric vehicle sharing charging pile, applicable to the charging pile described in claim 1, characterized in that, The multiple wireless charging transmitter boards (3) are divided into two groups, A and B. When charging while parking, the time-division multiplexing coding module controls the on / off states of the multiple wireless charging transmitter boards (3), including the following two control forms: S1: The wireless charging transmitter boards (3) in rows A and B are controlled in different time periods, that is, the wireless charging transmitter boards (3) in group A first maintain a charging state for a set time length and then turn off, and then the wireless charging transmitter boards (3) in group B are started to maintain a charging state for a set time length; reasonably allocate the charging time periods to ensure that the vehicles in both rows A and B can obtain sufficient power supply; S2: Set the number of vehicles that can be charged simultaneously by the charging pile. According to the parking order of the vehicles, control the charging states of the wireless charging transmitter boards (3) in batches, set the charging time for each batch of vehicles, and divide a day into multiple charging time periods to achieve batch power supply for multiple vehicles.

3. A control method for a time-division multiplexing one-to-many electric vehicle sharing charging pile, applicable to the charging pile described in claim 1, characterized in that, The allocation between the charging pile body (1) and the wireless charging transmitter boards (3) includes the following two methods: S1: The output voltage of the charging pile body (1) is equal to the voltage of a single wireless charging transmitter board (3), and the multiple wireless charging transmitter boards (3) take turns to charge at different time periods; S2: The output voltage of the charging pile body (1) is equal to the total voltage of the multiple connected wireless charging transmitter boards (3), and the multiple wireless charging transmitter boards (3) can charge at the same time.

4. According to the time-division multiplexing one-to-many electric vehicle sharing charging pile described in claim 1, characterized in that: A layer of protective board (8) is laid on the inner wall of the groove (7). A support platform board (10) is installed at the bottom of the groove (7) through a support column (9). A lifting board (11) is arranged above the support platform board (10). An electric telescopic rod (12) is installed on both sides of the support platform board (10) at the bottom of the groove (7). The output end of the electric telescopic rod (12) is fixedly connected to the bottom of the lifting board (11) upward, and the control end of the electric telescopic rod (12) is connected to the PLC integrated circuit board (6).

5. According to the time-division multiplexing one-to-many electric vehicle sharing charging pile described in claim 4, characterized in that: Guide chutes (13) with opposite openings are respectively arranged on both inner walls of the groove (7). Both ends of the lifting board (11) extend outward and are inserted into the corresponding guide chutes (13) to slide, and the bottom of the guide chutes (13) is flush with the upper surface of the support platform board (10).

6. According to the time-division multiplexing one-to-many electric vehicle sharing charging pile described in claim 4, characterized in that: Distance sensors (14) and infrared sensors (15) are respectively installed inside the tops on both sides of the protection plate (8). The output end of the distance sensor (14) is connected to the circuit on / off execution module, and the output ends of the infrared sensors (15) are respectively connected to the timing recording module and the counting module.

7. According to the time-division multiplexing one-to-many electric vehicle sharing charging pile described in claim 4, characterized in that: The bottom of the wireless charging transmitting plate (3) is fixed on the mounting plate (17). The mounting plate (17) is connected to the lifting plate (11) through a connecting rod (18). A layer of sealed waterproof layer (16) is wrapped on the side surface of the wireless charging transmitting plate (3).

8. According to the time-division multiplexing one-to-many electric vehicle sharing charging pile described in claim 1, characterized in that: Positioning interception strips (19) are respectively arranged on the ground (2) corresponding to the parking spaces where each groove (7) is located. A positioning plug (20) embedded in the ground (2) is installed at the bottom of the positioning interception strip (19), and pull rings (21) are installed at both ends of the positioning interception strip (19).

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