A smart ring-cut split charging pile

Abstract

This invention relates to the field of charging pile technology, specifically to an intelligent ring-cut split-type charging pile, including a charging terminal. The charging terminal includes a shell accommodating a circuit module, a charging gun, and a charging cable connecting the charging gun and the circuit module. The shell has a mounting frame, with N fixed pulleys rotatably mounted above the mounting frame and N+1 vertically sliding pulleys below the mounting frame. The fixed and moving pulleys are arranged intermittently. The mounting frame has a ring-cut inlet and outlet. The charging cable passes through the inlet and outlet and is sequentially connected to the moving and fixed pulleys. By holding the charging gun, the charging cable is pulled out from the outlet, causing the charging cable to pull up the moving pulley and reduce the distance between it and the fixed pulley. This allows the charging cable between the fixed and moving pulleys to compensate for the initial distance between the charging gun and the charging terminal of the electric vehicle, and ensures that the charging cable is not dragged on the ground.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, and specifically to an intelligent ring-cut split-type charging pile. Background Technology

[0002] Split-type charging piles are a type of charging pile compared to integrated charging piles. Integrated charging piles have their charging modules and charging guns installed in a single charging cabinet, where power conversion and distribution are completed within that cabinet—meaning one device has all the charging functions. Split-type charging piles, on the other hand, consist of a power cabinet and charging terminals. One power cabinet can power multiple charging terminals. All charging modules are centralized in the power cabinet, and dynamic power distribution is achieved through a power distribution unit. The charging terminals do not have power conversion functions; they are only responsible for charging connection and charging circuit opening / closing control. The power cabinet and charging terminals are directly connected via cables to transmit electrical energy. Existing charging piles have the function of detecting whether the charging gun is connected to the trolley charging port, and also have the function of checking whether the charging gun has been returned to its placement port.

[0003] Ring cutting refers to the process of creating a ring-shaped cut on the outer shell or key components of a charging pile through a ring-shaped cutting process.

[0004] Charging stations are often placed outdoors. Before and after charging, due to the distance between the electric vehicle charging port and the charging station, the charging cable often needs to be dragged manually. During the process of dragging, the outer wall of the charging cable is easily worn. In addition, the charging cable is prone to abnormal twisting and tangling due to untimely and inaccurate storage after use. This will have an adverse effect on the service life of the charging cable and its reuse.

[0005] To address this, patents with publication numbers CN117944491B and CN118596892B employ a method of winding the charging cable around a drum to prevent it from contacting the ground. While the length of the charging cable connected to the charging gun is indeed adjusted when the drum rotates, the cable connected to the circuit module gradually winds around the drum. At this point, a very long charging cable must be left between the drum and the circuit module, i.e., the longest length the charging gun can extend when pulling the cable; otherwise, the charging cable will be pulled off the circuit module.

[0006] The information disclosed in the background section is only intended to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to design a charging station that does not use rollers to retract or extend the charging cable, does not require a pre-set electric gun to pull the charging cable to its maximum extension length, ensures that the charging cable does not come into contact with the ground and is not worn, and can adjust the length of the charging cable according to the distance to the vehicle, thereby solving the above-mentioned shortcomings in the technology.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an intelligent ring-cut split charging pile, comprising a charging terminal, the charging terminal comprising a housing accommodating a circuit module, a charging gun, and a charging cable connecting the charging gun and the circuit module, the housing having a mounting frame, N fixed pulleys rotatably mounted above the mounting frame, and N+1 vertically slidingly mounted movable pulleys below the mounting frame, the movable pulleys and fixed pulleys being arranged intermittently, the mounting frame having a ring-cut inlet and outlet, the charging cable passing through the inlet and outlet, and sequentially rollingly connected to the movable pulleys and fixed pulleys;

[0009] By holding the charging gun, the charging cable is pulled out from the outlet and suspended in the air. The charging cable pulls up the movable pulley, reducing the distance between it and the fixed pulley. This allows the charging cable between the fixed and movable pulleys to compensate for the initial distance between the charging gun and the charging end of the electric vehicle.

[0010] Preferably, the mounting bracket includes a connector rotatably connected to the fixed pulley, 2N+2 vertically arranged guide rods fixedly installed on the connector, and an outer cover fixedly installed on the connector. The cable outlet is opened on the outer cover, the cable inlet is opened on the connector, the guide rod has a guide groove, and a guide shaft fixedly connected to the fixed pulley is slidably connected in the guide groove.

[0011] Preferably, the connector consists of a top plate, a bottom plate, and a connecting column that is fixedly connected between the top plate and the bottom plate. The fixed pulleys are arranged in a circular array and rotatably installed between the connecting column and the outer cover. The movable pulleys are arranged in a circular array and intermittently arranged with the fixed pulleys.

[0012] Preferably, a one-way groove is opened on one side of the guide rod, a ratchet is slidably installed in the one-way groove, a connecting plate is fixedly installed between two adjacent ratchets, a spring is fixedly installed on one side of the connecting plate, a positioning plate fixedly connected to the chassis is fixedly installed at the end of the spring, and a limiting rod penetrating the positioning plate is fixedly installed on the connecting plate, and the limiting rod is slidably connected to the positioning plate.

[0013] Preferably, an electromagnetic switch is fixedly installed on the positioning plate, the electromagnetic switch is electrically connected to the circuit module, and the output end of the electromagnetic switch is fixedly connected to the connecting plate.

[0014] Preferably, the connector has a through hole in the middle, and a support shaft that is rotatably connected to the through hole is fixedly installed at the bottom of the housing. A mounting plate is fixedly connected to the bottom of the support shaft, and a bearing is provided between the mounting plate and the connector.

[0015] Preferably, a baffle plate is fixedly installed on the top of the top plate, and a block is fixedly installed on the bottom of the outer shell on the same circumference as the baffle plate, with the block and the baffle plate partially overlapping in the vertical direction.

[0016] Preferably, the aforementioned.

[0017] Preferably, the inlet is fixedly connected to the charging cable, and the charging cable between the inlet and the outer casing has a certain length. When the baffle moves from one side of the block to the other side of the block, this part of the charging cable is not taut.

[0018] Preferably, an output wheel is installed on the inner wall of the outer cover, the output wheel is rotatably connected to the charging cable, and a guide tube that coincides with the cable outlet is fixedly installed on the outer wall of the outer cover, the guide tube being slidably connected to the charging cable.

[0019] Preferably, a placement port for placing the charging gun is fixedly installed on the outer wall of the outer cover.

[0020] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0021] 1. This invention allows the charging cable to be pulled out from the outlet by holding the charging gun. The charging cable pulls up the movable pulley and reduces the distance between it and the fixed pulley. This makes the charging cable between the fixed pulley and the movable pulley compensate for the initial distance between the charging gun and the charging end of the electric vehicle. This allows the vehicle owner to pull the charging cable to the required length according to the parking distance of the vehicle.

[0022] 2. This invention uses the pulley and the weight of the charging cable itself to keep the charging cable taut when it is pulled out and retracted from the outlet, so that the charging cable does not drag and wear on the ground.

[0023] 3. In addition, the movable pulley and the fixed pulley in this invention are arranged in a ring array intermittently, so that the charging cable will not be tangled or abnormally twisted during the winding and unwinding process, thereby improving the service life of the charging cable.

[0024] 4. Compared with the prior art that uses rollers to retract and extend the charging cable, the present invention has two advantages: first, it does not require reserving space between the rollers and the circuit module for the charging cable to be stretched to its maximum length, thus reducing the length of the charging cable used; second, it uses gravity as the tensioning force, reducing the number of parts and thus reducing production costs.

[0025] 5. This invention uses a ratchet to support and limit the movable pulley, so that the charging cable is not in a taut state when the charging gun is charging the tram. With the help of the electromagnetic switch, it can be ensured that the charging cable is taut again when the charging gun is removed from the tram after charging, and that the charging cable does not rub against the ground when it is retracted. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the connector of the present invention without the guide rod installed;

[0029] Figure 3 This is a schematic diagram of the guide rod installation for the connector of the present invention;

[0030] Figure 4 This is a schematic diagram showing the connection and support shaft of the present invention disassembled;

[0031] Figure 5 This is a schematic diagram showing the disassembled ratchet and guide rod of the present invention;

[0032] Figure 6 This is a schematic diagram showing the general distribution of the power cabinet and charging terminal of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Outer shell; 2. Charging gun; 3. Charging cable; 4. Mounting bracket; 4a. Connector; 4a1. Top plate; 4a2. Base plate; 4a3. Connecting column; 4a4. Through hole; 4b. Guide rod; 4c. Outer cover; 4d. Guide groove; 4e. Guide shaft; 5. Fixed pulley; 6. Movable pulley; 7. Cable inlet; 8. Cable outlet; 9. One-way groove; 10. Ratchet; 11. Connecting plate; 12. Spring; 13. Positioning plate; 14. Limiting rod; 15. Electromagnetic switch; 16. Support shaft; 17. Mounting piece; 18. Bearing; 19. Baffle; 20. Stop block; 21. Guide wheel; 22. Guide tube; 23. Placement port. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0037] This invention provides, for example Figure 1-6 The illustrated intelligent ring-cut split charging pile includes a power cabinet and a charging terminal, which are connected by a cable. The charging terminal includes a housing 1 that houses a circuit module, a charging gun 2, and a charging cable 3 that connects the charging gun 2 and the circuit module. The charging cable 3 passes through the housing 1 and is fixedly connected to the housing 1, while also being electrically connected to the circuit module. A support shaft 16 is fixedly connected to the bottom of the housing 1, and a mounting plate 17 is fixedly connected to the bottom of the support shaft 16. A connecting post 4a3 passes through and is rotatably mounted on the support shaft 16. The connecting column 4a3 has a top plate 4a1 at the top and a bottom plate 4a2 at the bottom. The connecting column 4a3, top plate 4a1, and bottom plate 4a2 constitute an integrated cylindrical connector 4a. A transparent outer cover 4c is fixedly installed on the top plate 4a1 and bottom plate 4a2. N fixed pulleys 5 are rotatably installed above the outer cover 4c and the connecting column 4a3. N+1 movable pulleys 6 are arranged below the outer cover 4c and the connecting column 4a3. Both the movable pulleys 6 and the fixed pulleys 5 are arranged in a circular array outside the connecting column 4a3. Furthermore, the movable pulley 6 and the fixed pulley 5 are arranged intermittently. We have a cable inlet 7 cut around the top plate 4a1 and a cable outlet 8 cut around the outer casing 4c. The charging cable 3, emerging from the outer casing 1, enters through the cable inlet 7 between the outer casing 4c and the connecting post 4a3, then rolls sequentially around the movable pulley 6 and the fixed pulley 5, before extending out from the cable outlet 8. Under normal circumstances, the movable pulley 6 has weight, plus the weight of the charging cable 3 itself, so the movable pulley 6 is in contact with the top surface of the chassis 4a2. The distance between the movable pulley 6 and the fixed pulley 5... At its maximum, the charging cable 3 is stored between the connecting post 4a3 and the outer cover 4c. When the charging gun 2 pulls the charging cable 3 out of the outlet 8, it will pull the charging cable 3, which will pull the movable pulley 6 up, so that the charging cable 3 between the fixed pulley 5 and the movable pulley 6 can be pulled out, thereby increasing the length of the charging cable 3 between the outlet 8 and the charging gun 2, making it convenient for the car owner to pull the charging gun 2 to the car for charging. In addition, due to the weight of the movable pulley 6, the charging cable 3 is kept taut and will not hang down to the ground and drag, causing wear on the outer wall.

[0038] To ensure the vertical sliding of the movable pulley 6, we fix a guide shaft 4e on the movable pulley 6 and set a guide rod 4b at both ends of the guide shaft 4e. The guide rod 4b has a guide groove 4d. The guide shaft 4e slides vertically in the guide groove 4d. One end of the guide rod 4b is fixedly connected to the top plate 4a1 and the other end is fixedly connected to the bottom plate 4a2. At this time, the movable pulley 6 will rise and fall along the guide groove 4d to prevent it from falling off the charging cable 3.

[0039] To prevent the charging gun 2 from exerting force on the charging cable 3 while charging the trolley, causing the charging gun 2 to detach from the trolley, a through-hole one-way groove 9 is made on one side of the guide rod 4b. A ratchet 10 is placed in the one-way groove 9, with its hypotenuse facing down and its flat surface facing up. A connecting plate 11 is fixedly installed between the two ratchet 10s to simultaneously drive the ratchet 10s on both sides of the one-way pulley 6. A spring 12 is installed on the connecting plate 11 to apply elastic force to the ratchet 10, ensuring that the ratchet 10 is located within the guide rod 4b and supports the guide shaft 4e on the trolley 6 when there is no external force. A positioning plate 13 is fixedly installed at the end of the spring 12, and a limiting rod 14 penetrating the positioning plate 13 is fixedly installed on the connecting plate 11 to allow the ratchet 10 to move along a predetermined trajectory. At this time, charging... When cable 3 is pulled out from outlet 8 and pulls pulley 6 upward, guide shafts 4e on both sides of pulley 6 will rise within guide groove 4d. When guide shaft 4e contacts the inclined side of ratchet 10, it will push ratchet 10 to move laterally. Racket 10 will compress spring 12. When guide shaft 4e no longer pushes ratchet 10, ratchet 10 will return to its original position under the action of spring 12. At this time, the plane of ratchet 10 is below guide shaft 4e. Once the car owner releases charging gun 2, pulley 6 will drive guide shaft 4e to descend and contact ratchet 10 under the action of gravity. Racket 10 will restrict pulley 6 from continuing to descend, so that charging cable 3 will only retract a short distance at most. The car owner only needs to pull charging cable 3 a little further before charging so that charging cable 3 is not taut after releasing it.

[0040] To ensure that the charging cable 3 does not come into contact with the ground during the process of the user returning the charging gun 2 after the electric vehicle is fully charged, and to achieve an automatic retraction function for the charging cable 3, an electromagnetic switch 15 is installed on the positioning plate 13. The output end of the electromagnetic switch is fixedly connected to the connecting plate 11, and the electromagnetic switch 15 is electrically connected to the circuit module. When three conditions are met in sequence: first, the charging gun 2 has finished charging the electric vehicle; second, the charging gun 2 is no longer charging the electric vehicle; and third, the charging gun 2 is no longer connected to the electric vehicle, the electromagnetic switch 15 is activated, and the cable 3 is automatically retracted. The connecting plate 11 is pulled towards the positioning plate 13, thereby moving the ratchet 10 to no longer support and limit the guide shaft 4e. At this time, the car owner holds the charging gun 2 and moves it towards the charging terminal. The movable pulley 6 will descend under the action of gravity, increasing the distance between the movable pulley 6 and the fixed pulley 5, thereby increasing the length of the charging cable 3 between the movable pulley 6 and the fixed pulley 5, so that the charging cable 3 is retracted without contacting the ground. At the same time, we have installed a placement port 23 for placing the charging gun 2 on the outer cover 4c. When the charging gun 2 is detected to be placed in the placement port 23, the electromagnetic switch 15 is closed, and the spring 12 resets the ratchet 10 through elastic force.

[0041] To address the issue of some car owners parking crookedly, we designed the support shaft 16 as a column and installed a bearing 18 between the chassis 4a2 and the mounting plate 17, allowing the connector 4a to rotate on the support shaft 16. To prevent the connector 4a from rotating more than one revolution on the support shaft 16, we fixed a baffle 19 on the top plate 4a1 and a stop block 20 on the bottom of the outer casing 1. After the stop block 20 contacts the baffle 19, it restricts the connector 4a from continuing to rotate. To prevent the charging cable 3 from being pulled off the charging terminal when the connector 4a rotates, we installed a baffle 18 at the cable inlet 7 and the mounting plate 17. The outer casing 1 provides a certain length allowance for the charging cable 3. When the owner pulls the charging cable 3, the connector 4a will also rotate around the support shaft 16, ensuring that the charging cable 3 and the electric vehicle are in a straight line. This prevents the charging cable 3 from needing to bend at a certain angle when it extends from the outlet 8 to charge the electric vehicle, thus preventing damage to the charging cable 3 due to bending fatigue at the outlet 8. At the same time, we have installed a guide wheel 21 on the outer casing 4c to ensure that the charging cable 3 is not bent too much when it moves from the guide wheel 21 to the outlet 8, and to ensure that the charging cable 3 is inserted horizontally into the outlet 8 from the guide wheel 21.

[0042] Overall operating steps: The owner parks the electric vehicle next to the charging terminal, then removes the charging gun 2 from the placement port 23. Holding the charging gun 2, the owner pulls the charging cable 3 out of the outlet 8. At this time, the charging cable 3 will pull the movable pulley 6 upward, allowing the charging cable 3 between the movable pulley 6 and the fixed pulley 5 to extend out of the outlet 8. Then, the owner charges the electric vehicle with the charging gun 2 and pulls the charging cable 3 a certain length so that after the charging gun 2 is connected to the electric vehicle, the charging cable 3 is in a non-tensioned state. At this time, the movable pulley 6 will be affected by the ratchet. The ratchet 10 is unable to descend due to the support of the ratchet 10, and the charging cable 3 cannot be retracted. When the charging is completed, the owner removes the charging gun 2 from the electric vehicle. At this time, the electromagnetic switch 15 is turned on, and the ratchet 10 no longer supports the moving pulley 6. At this time, the owner holds the charging gun 2 and approaches the charging terminal. The moving pulley 6 descends under the action of gravity, so that the charging cable 3 is gradually suspended and retracted into the outer cover 4c. Then the owner puts the charging gun 2 into the placement port 23. After the circuit module detects that the charging gun 2 is in place, the electromagnetic switch 15 is turned off, and the ratchet 10 is reset.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.

Claims

1. A smart ring-cut split-type charging pile, comprising a charging terminal, the charging terminal including a housing (1) for accommodating a circuit module, a charging gun (2), and a charging cable (3) connecting the charging gun (2) and the circuit module, characterized in that: The outer casing (1) has a mounting frame (4) on the outside. N fixed pulleys (5) are rotatably mounted on the top of the mounting frame (4). N+1 vertically sliding movable pulleys (6) are mounted below the mounting frame (4). The movable pulleys (6) and fixed pulleys (5) are arranged intermittently. The mounting frame (4) has a circumferentially cut inlet (7) and outlet (8). The charging cable (3) passes through the inlet (7) and outlet (8) and is sequentially connected to the movable pulleys (6) and fixed pulleys (5) in a rolling manner. The mounting bracket (4) includes a connector (4a) rotatably connected to the fixed pulley (5), 2N+2 vertically arranged guide rods (4b) fixedly installed on the connector (4a), and an outer cover (4c) fixedly installed on the connector (4a). The outlet (8) is opened on the outer cover (4c), and the inlet (7) is opened on the connector (4a). The guide rod (4b) has a guide groove (4d), and a guide shaft (4e) fixedly connected to the fixed pulley (5) is slidably connected in the guide groove (4d). The connector (4a) consists of a top plate (4a1), a bottom plate (4a2), and a connecting column (4a3) that is fixedly connected between the top plate (4a1) and the bottom plate (4a2). The fixed pulleys (5) are arranged in a ring array and rotated between the connecting column (4a3) and the outer cover (4c). The movable pulleys (6) are arranged in a ring array and are intermittently arranged with the fixed pulleys (5). The guide rod (4b) has a one-way groove (9) on one side, and a ratchet (10) is slidably installed in the one-way groove (9). A connecting plate (11) is fixedly installed between two adjacent ratchets (10). A spring (12) is fixedly installed on one side of the connecting plate (11). A positioning plate (13) fixedly connected to the chassis (4a2) is fixedly installed at the end of the spring (12). A limiting rod (14) penetrating the positioning plate (13) is fixedly installed on the connecting plate (11). The limiting rod (14) is slidably connected to the positioning plate (13). By holding the charging gun (2), the charging cable (3) is pulled out from the outlet (8) and suspended in the air. The charging cable (3) pulls up the movable pulley (6) and reduces the distance between it and the fixed pulley (5), so that the charging cable (3) between the fixed pulley (5) and the movable pulley (6) makes up for the distance between the charging gun (2) and the charging end of the electric vehicle in the initial state.

2. The intelligent ring-cut split-type charging pile according to claim 1, characterized in that: An electromagnetic switch (15) is fixedly installed on the positioning plate (13). The electromagnetic switch (15) is electrically connected to the circuit module, and the output end of the electromagnetic switch (15) is fixedly connected to the connecting plate (11).

3. The intelligent ring-cut split-type charging pile according to claim 1, characterized in that: The connector (4a) has a through hole (4a4) in the middle. The bottom of the outer shell (1) is fixedly installed with a support shaft (16) that is rotatably connected to the through hole (4a4). The bottom of the support shaft (16) is fixedly connected with a mounting plate (17). A bearing (18) is provided between the mounting plate (17) and the connector (4a).

4. The intelligent ring-cut split-type charging pile according to claim 1, characterized in that: A baffle plate (19) is fixedly installed on the top of the top plate (4a1), and a block (20) on the same circumference as the baffle plate (19) is fixedly installed on the bottom of the outer shell (1). The block (20) and the baffle plate (19) partially overlap in the vertical direction.

5. The intelligent ring-cut split-type charging pile according to claim 4, characterized in that: The inlet (7) is fixedly connected to the charging cable (3). The charging cable (3) between the inlet (7) and the outer shell (1) has a certain length. When the baffle (19) moves from one side of the baffle (20) to the other side of the baffle (20) and contacts it, this part of the charging cable (3) is not tensioned.

6. The intelligent ring-cut split-type charging pile according to claim 1, characterized in that: The inner wall of the outer cover (4c) is equipped with an outlet wheel (21), which is tumbled to the charging cable (3). A guide tube (22) that coincides with the outlet (8) is fixedly installed on the outer wall of the outer cover (4c), and the guide tube (22) is slidably connected to the charging cable (3).

7. The intelligent ring-cut split-type charging pile according to claim 1, characterized in that: The outer wall of the outer cover (4c) is fixedly installed with a placement port (23) for placing the charging gun (2).

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