A charging pile connecting device capable of rapid operation and maintenance

Abstract

This invention belongs to the field of charging piles, specifically a charging pile connection device for rapid operation and maintenance. It includes an input connection module, an output connection module, a safety protection module, and a circuit monitoring module. The charging pile connection device also includes a first drawer, a second drawer, and a panel. The input connection module and the safety protection module are installed in the first drawer, and the circuit monitoring module and the output connection module are installed in the second drawer. Guide rails are fixedly connected to both sides of the first and second drawers. In use, each module is installed in the first and second drawers respectively. The slide rails are mounted on the frame of the charging cabinet, and the panel is mounted on the front of the charging cabinet and fixedly connected to the frame. The drawers can be smoothly pushed and pulled by the sliding cooperation between the guide rails and the slide rails. Due to the modular drawer structure, each module can be easily replaced, upgraded, or isolated for faults, facilitating rapid inspection and on-site maintenance by operation and maintenance personnel.

Description

Technical Field

[0001] This invention relates to the field of charging piles, specifically a charging pile connection device that enables rapid operation and maintenance. Background Technology

[0002] With the rapid growth of new energy vehicle ownership, charging piles, as core energy replenishment facilities, directly affect user experience and large-scale operation costs due to their operational safety, reliability, and maintenance efficiency. Charging connection devices, as key nodes for energy transfer between charging piles and vehicles, are high-risk components, and current technologies have many shortcomings, making it difficult to meet the requirements for efficient operation and maintenance.

[0003] Existing charging pile connection devices mostly adopt an integrated structural design with low modularity. Each function is integrated into a single unit. When a certain part fails, the entire device needs to be disassembled for repair or replacement, which is not only time-consuming but also causes the charging pile to be shut down for a long time, affecting operational efficiency. Therefore, a charging pile connection device that can be quickly operated and maintained is proposed to address the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a charging pile connection device that can be quickly operated and maintained.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A charging pile connection device for rapid operation and maintenance, comprising an input connection module, an output connection module, a safety protection module, and a circuit monitoring module; the charging pile connection device further includes a first drawer, a second drawer, and a panel; the input connection module and the safety protection module are installed in the first drawer, and the circuit monitoring module and the output connection module are installed in the second drawer; guide rails are fixedly connected to both sides of the first and second drawers, and slide rails are slidably connected within the guide rails; the first and second drawers penetrate the panel and can be horizontally pulled out along the slide rails; wiring connection modules are installed on both the safety protection module and the circuit monitoring module; locks are installed on both the first and second drawers, and the locks are used to lock the position of the drawers after they are fully pushed into place.

[0006] Preferably, the input connection module, output connection module, and line connection module have the same structure. The input connection module includes a support plate, multiple sleeves, and connection terminals. The multiple sleeves are fixed to the support plate, and the connection terminals are fixed to the bottom of the sleeves. The sleeves have multiple annularly distributed conductive metal parts inside. The tops of the multiple conductive metal parts are combined to form a first slot, and the bottoms of the multiple conductive metal parts are combined to form a second slot. The end of the connection terminal is inserted into the second slot. A wire terminal is slidably connected to the middle of the first slot. The sleeves have an elastic clamping mechanism inside, which is used to make the conductive metal parts close towards the center.

[0007] Preferably, the elastic clamping mechanism includes an elastic element and a collar, a central guide slope of the conductive metal element, the collar being sleeved on the outside of multiple conductive metal elements, the collar and the guide slope being slidably engaged, and an elastic element being provided at the bottom of the collar.

[0008] Preferably, the top of the second slot is provided with a through hole, and the top of the connecting terminal is integrally formed with a connecting part, the connecting part passing through the through hole, and the connecting part and the end of the wire terminal abutting against each other.

[0009] Preferably, the wire terminal has a slot in the middle, the slot has a trapezoidal cross-section, and a trapezoidal protrusion is integrally formed on the conductive metal part at the position corresponding to the slot, the trapezoidal protrusion and the slot forming a surface contact fit.

[0010] Preferably, a pressing ring is slidably connected to the top end of the sleeve, and the bottom of the pressing ring is in contact with the top end of the sleeve.

[0011] Preferably, a charging circuit is formed between the input connection module and the output connection module, and the safety protection module includes a circuit switch, a leakage current protection circuit breaker and a fuse, which are electrically connected in series in the charging circuit.

[0012] Preferably, the circuit monitoring module includes a current and voltage sampling unit, a temperature sensor, and a first signal port. The current and voltage sampling unit is electrically connected to the charging circuit, and the first signal port is signal-connected to the current and voltage sampling unit, the circuit switch, and the temperature sensor. The first signal port is signal-connected to the main control board of the charging pile and is used to upload current, voltage, and temperature sampling data.

[0013] Preferably, the charging pile connection device further includes a remote operation and maintenance module, which is installed in the third drawer. The third drawer is also fixed with a guide rail and a lock. The remote operation and maintenance module includes a wireless communication unit, a computing chip unit, and a second signal port. The second signal port and the wireless communication unit are signal-connected to the computing chip unit, and the first signal port and the second signal port are signal-connected. The computing chip unit receives current, voltage, and temperature sampling data, generates fault codes based on a preset program, and then uploads them to the cloud operation and maintenance platform in real time through the wireless communication unit.

[0014] The advantages of this invention are: 1. This invention, by setting up a first drawer, a second drawer, a lock, a guide rail, and a slide rail, allows each module to be installed in the first and second drawers respectively during use. The slide rail is installed on the frame of the charging cabinet, and the panel is installed on the front side of the charging cabinet and fixedly connected to the frame. The drawers can be smoothly pushed and pulled by the sliding cooperation between the guide rail and the slide rail. The modular drawer structure allows for easy independent replacement, upgrading, or fault isolation of each module, facilitating quick inspection and on-site maintenance by operation and maintenance personnel. 2. This invention, by setting up a support plate, sleeve, connecting terminal, guide terminal, conductive metal parts, collar, and elastic element, allows the wire terminal to be crimped onto the end of the wire used for connection during installation. After the wire terminal is inserted into the first slot, the collar slides upward along the guide slope under the action of the elastic element, causing each conductive metal part to elastically contract radially inward and clamp the outer periphery of the wire terminal and the connecting terminal. This achieves a quick connection between the wire terminal and the connecting terminal, which facilitates the quick disassembly of the wire by maintenance personnel and makes maintenance easier. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the first drawer structure of the present invention; Figure 4 This is a schematic cross-sectional view of the sleeve structure of the present invention; Figure 5 This is a schematic diagram of the structure of the conductive metal component of the present invention; Figure 6 This is a schematic diagram showing the connections of the various modules of the present invention.

[0017] In the diagram: 11. Panel; 12. First drawer; 13. Second drawer; 14. Guide rail; 15. Slide rail; 16. Lock; 21. Support plate; 22. Sleeve; 23. Connecting terminal; 24. Wire terminal; 25. Conductive metal part; 26. First slot; 27. Second slot; 31. Elastic element; 32. Collar; 33. Guide slope; 4. Connecting part; 51. Slot; 52. Trapezoidal protrusion; 6. Press ring; 7. Third drawer; 71. First signal port; 72. Second signal port. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Specific implementation examples are given below.

[0020] Please see Figure 1-5 As shown, a charging pile connection device for rapid operation and maintenance includes an input connection module, an output connection module, a safety protection module, and a circuit monitoring module. The charging pile connection device also includes a first drawer 12, a second drawer 13, and a panel 11. The input connection module and the safety protection module are installed in the first drawer 12, and the circuit monitoring module and the output connection module are installed in the second drawer 13. Guide rails 14 are fixedly connected to both sides of the first drawer 12 and the second drawer 13, and slide rails 15 are slidably connected within the guide rails 14. The first drawer 12 and the second drawer 13 penetrate the panel 11 and can be horizontally pulled out along the slide rails 15. Line connection modules are installed on both the safety protection module and the circuit monitoring module. Locks 16 are installed on both the first drawer 12 and the second drawer 13, and the locks 16 are used to lock the position of the drawer after it is fully pushed into place. In use, the input connection module is connected to an external power source, and the output connection module is connected to the charging gun. A charging circuit is formed between the input and output connection modules. Two line connection modules are used for electrical connection between the safety protection module and the circuit monitoring module. The current in the charging circuit flows sequentially through the input connection module, the safety protection module, the two line connection modules, the circuit monitoring module, and the output connection module. The safety protection module monitors the leakage current and overload status of the charging circuit in real time. The circuit monitoring module synchronously collects current, voltage, and temperature data of key nodes. The above modules are respectively installed in the first drawer 12 and the second drawer 13. The slide rail 15 is installed on the frame of the charging pile, and the panel 11 is installed on the front side of the charging pile and is fixed to the frame. The drawers are smoothly pushed and pulled by the sliding cooperation between the guide rail 14 and the slide rail 15. The modular drawer structure allows for easy independent replacement, upgrading, or fault isolation of each module, facilitating quick inspection and on-site maintenance by operation and maintenance personnel.

[0021] Furthermore, such as Figure 1-5 As shown, the input connection module, output connection module, and line connection module have the same structure. The input connection module includes a support plate 21, multiple sleeves 22, and connection terminals 23. The multiple sleeves 22 are fixed to the support plate 21, and the connection terminals 23 are fixed to the bottom of the sleeves 22. The inside of each sleeve 22 is provided with multiple annularly distributed conductive metal parts 25. The tops of the multiple conductive metal parts 25 are combined to form a first slot 26, and the bottoms of the multiple conductive metal parts 25 are combined to form a second slot 27. Terminal 23 is inserted into the second slot 27. A wire terminal 24 is slidably connected to the middle of the first slot 26. The sleeve 22 is provided with an elastic clamping mechanism, which is used to bring each conductive metal part 25 together towards the center. The elastic clamping mechanism includes an elastic element 31 and a collar 32. The conductive metal part 25 has a guide slope 33 in the middle. The collar 32 is sleeved on the outside of the multiple conductive metal parts 25. The collar 32 and the guide slope 33 are slidably engaged. The bottom of the collar 32 is provided with an elastic element 31. During installation, the wire terminal 24 is crimped onto the end of the wire used for connection. After the wire terminal 24 is inserted into the first slot 26, the collar 32 slides upward along the guide slope 33 under the action of the elastic member 31, causing each conductive metal part 25 to elastically contract radially inward and clamp the outer periphery of the wire terminal 24 and the connecting terminal 23, thereby realizing the connection between the wire terminal 24 and the connecting terminal 23. In addition, this connection method simultaneously completes radial elastic locking during the insertion and removal process, so that the inner wall of the conductive metal part 25 is tightly attached to the guide terminal, forming a surface contact conductive interface, thereby avoiding the problem of increased contact resistance, local overheating, or even arcing due to gaps at the contact point. Furthermore, multiple conductive metal parts 25 close together to form an annular conductive channel, increasing the overall contact area, effectively reducing contact resistance, and improving current carrying capacity and thermal stability. Moreover, the above connection method allows maintenance personnel to quickly disassemble the wires, facilitating maintenance.

[0022] Furthermore, such as Figure 1-5 As shown, the second slot 27 has a through hole at its top, and the top of the connecting terminal 23 is integrally formed with a connecting part 4, which passes through the through hole. The connecting part 4 and the end of the wire terminal 24 are abutted together. The middle of the wire terminal 24 is provided with a slot 51, which has a trapezoidal cross-section. The conductive metal part 25 has an integrally formed trapezoidal protrusion 52 that matches the slot 51 at the corresponding position. The trapezoidal protrusion 52 and the slot 51 form a surface contact fit. The top of the sleeve 22 is slidably connected with a pressing ring 6, and the bottom of the pressing ring 6 is in contact with the top of the sleeve 32. During use, the top of the connecting terminal 23 is provided with a connecting part 4. The connecting part 4 of the connecting terminal 23 and the end of the wire terminal 24 are pressed together to enhance the conductivity. The slot 51 and the trapezoidal protrusion 52 are in contact with the surface of the slot 51 and generate axial limit during the insertion and removal process to ensure the stability of the connection. When the pressing ring 6 is pressed down by external force, it pushes the collar 32 to slide down along the guide slope 33 to release the clamping constraint on the wire terminal 24.

[0023] Furthermore, such as Figure 6As shown, a charging circuit is formed between the input connection module and the output connection module. The safety protection module includes a circuit switch, a leakage current circuit breaker, and a fuse, which are electrically connected in series in the charging circuit. The circuit monitoring module includes a current and voltage sampling unit, a temperature sensor, and a first signal port 71. The current and voltage sampling unit is electrically connected to the charging circuit, and the first signal port 71 is signal-connected to the current and voltage sampling unit, the circuit switch, and the temperature sensor. The first signal port 71 is signal-connected to the main control board of the charging pile for uploading current, voltage, and temperature samples. The charging pile connection device also includes a remote operation and maintenance module, which is installed in the third drawer 7. The third drawer 7 is also fixed with a guide rail 14 and a lock 16. The remote operation and maintenance module includes a wireless communication unit, a computing chip unit, and a second signal port 72. The second signal port 72 and the wireless communication unit are signal-connected to the computing chip unit. The first signal port 71 and the second signal port 72 are signal-connected. The computing chip unit receives current, voltage, and temperature sampling data, generates fault codes based on a preset program, and then uploads them to the cloud operation and maintenance platform in real time through the wireless communication unit. During use, the current is controlled step by step through circuit switches, leakage protection circuit breakers and fuses to ensure that electrical energy is safely and stably delivered to electric vehicles. The circuit monitoring module captures current and voltage fluctuations and temperature rise trends in real time. When abnormal parameters exceed preset thresholds, a fault code is generated and then uploaded to the cloud operation and maintenance platform in real time through the wireless communication unit. This allows operation and maintenance personnel to remotely locate the fault type, assess the risk level and trigger preset handling strategies.

[0024] Working principle: During use, each module is installed in the first drawer 12 and the second drawer 13 respectively. The slide rail 15 is installed on the frame of the charging pile, and the panel 11 is installed on the front side of the charging pile and fixed to the frame. The drawers are smoothly pushed and pulled by the sliding cooperation between the guide rail 14 and the slide rail 15. The modular drawer structure makes it easy to replace, upgrade or isolate each module independently, which facilitates the operation and maintenance personnel to carry out quick inspection and on-site maintenance. During installation, the wire terminal 24 is crimped onto the end of the wire used for connection. After the wire terminal 24 is inserted into the first slot 26, the collar 32 slides upward along the guide slope 33 under the action of the elastic member 31, causing each conductive metal part 25 to elastically contract radially inward and clamp the outer periphery of the wire terminal 24 and the connecting terminal 23. This achieves the connection between the wire terminal 24 and the connecting terminal 23. Furthermore, this connection method simultaneously completes radial elastic locking during insertion and removal, ensuring that the inner wall of the conductive metal part 25 is tightly fitted with the guide terminal, forming a surface contact conductive interface. This avoids gaps at the contact point, which could increase contact resistance or cause local overheating. To address the issue of electric arcs, multiple conductive metal parts 25 are joined together to form an annular conductive channel, increasing the overall contact area, effectively reducing contact resistance, and improving current carrying capacity and thermal stability. During use, the top of the connecting terminal 23 is provided with a connecting part 4, and the connecting part 4 of the connecting terminal 23 and the end of the wire terminal 24 are pressed together to enhance the conductivity. The slot 51 and the trapezoidal protrusion 52 are in contact with the surface of the slot 51, and axial limiting is generated simultaneously during the insertion and removal process to ensure the stability of the connection. When the pressing ring 6 is pressed down by external force, it pushes the collar 32 to slide down along the guide slope 33 to release the clamping constraint on the wire terminal 24. During use, the current is controlled step by step through circuit switches, leakage protection circuit breakers and fuses to ensure that electrical energy is safely and stably delivered to electric vehicles. The circuit monitoring module captures current and voltage fluctuations and temperature rise trends in real time. When abnormal parameters exceed preset thresholds, a fault code is generated and then uploaded to the cloud operation and maintenance platform in real time through the wireless communication unit. This allows operation and maintenance personnel to remotely locate the fault type, assess the risk level and trigger preset handling strategies.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A charging pile connection device for rapid operation and maintenance, comprising an input connection module, an output connection module, a safety protection module, and a circuit monitoring module; characterized in that: The charging pile connection device also includes a first drawer (12), a second drawer (13), and a panel (11). The input connection module and the safety protection module are installed in the first drawer (12), and the circuit monitoring module and the output connection module are installed in the second drawer (13). Guide rails (14) are fixedly connected to both sides of the first drawer (12) and the second drawer (13). A slide rail (15) is slidably connected in the guide rail (14). The first drawer (12) and the second drawer (13) pass through the panel (11) and can be pulled out horizontally along the slide rail (15). A line connection module is installed on both the safety protection module and the circuit monitoring module. Locks (16) are installed on both the first drawer (12) and the second drawer (13). The locks (16) are used to lock the position of the drawer after it is fully pushed into place.

2. The charging pile connection device with rapid operation and maintenance according to claim 1, characterized in that: The input connection module, output connection module and line connection module have the same structure. The input connection module includes a support plate (21), multiple sleeves (22) and a connection terminal (23). The multiple sleeves (22) are fixed on the support plate (21). The connection terminal (23) is fixed on the bottom of the sleeve (22). The sleeve (22) has multiple annularly distributed conductive metal parts (25) inside. The top of the multiple conductive metal parts (25) is combined to form a first slot (26). The bottom of the multiple conductive metal parts (25) is combined to form a second slot (27). The end of the connection terminal (23) is inserted into the second slot (27). The middle of the first slot (26) is slidably connected to a wire terminal (24). The sleeve (22) has an elastic pressing mechanism inside. The elastic pressing mechanism is used to make each conductive metal part (25) close towards the center.

3. The charging pile connection device with rapid operation and maintenance according to claim 2, characterized in that: The elastic clamping mechanism includes an elastic element (31) and a collar (32), a guide slope (33) in the middle of the conductive metal element (25), the collar (32) being sleeved on the outside of multiple conductive metal elements (25), the collar (32) and the guide slope (33) being slidably engaged, and an elastic element (31) being provided at the bottom of the collar (32).

4. The charging pile connection device with rapid operation and maintenance according to claim 3, characterized in that: The second slot (27) has a through hole at the top, and the top of the connecting terminal (23) has an integrally formed connecting part (4). The connecting part (4) passes through the through hole, and the end of the connecting part (4) and the wire terminal (24) abut against each other.

5. The charging pile connection device with rapid operation and maintenance according to claim 4, characterized in that: The wire terminal (24) has a slot (51) in the middle. The slot (51) has a trapezoidal cross-section. The conductive metal part (25) has an integrally formed trapezoidal protrusion (52) that matches the slot (51) at the position corresponding to the slot (51). The trapezoidal protrusion (52) and the slot (51) form a surface contact fit.

6. The charging pile connection device with rapid operation and maintenance according to claim 3, characterized in that: The top end of the sleeve (22) is slidably connected to a pressing ring (6), and the bottom of the pressing ring (6) is in contact with the top of the sleeve (32).

7. The charging pile connection device with rapid operation and maintenance according to claim 1, characterized in that: The input connection module and the output connection module form a charging circuit. The safety protection module includes a circuit switch, a leakage current protection circuit breaker, and a fuse. The circuit switch, leakage current protection circuit breaker, and fuse are electrically connected in series in the charging circuit.

8. A charging pile connection device with rapid operation and maintenance according to claim 7, characterized in that: The circuit monitoring module includes a current and voltage sampling unit, a temperature sensor, and a first signal port (71). The current and voltage sampling unit is electrically connected to the charging circuit. The first signal port (71) is signal-connected to the current and voltage sampling unit, the circuit switch, and the temperature sensor. The first signal port (71) is signal-connected to the main control board of the charging pile and is used to upload current, voltage, and temperature sampling data.

9. A charging pile connection device with rapid operation and maintenance according to claim 8, characterized in that: The charging pile connection device also includes a remote operation and maintenance module. The remote operation and maintenance module is installed in the third drawer (7). The third drawer (7) is also fixed with a guide rail (14) and a lock (16). The remote operation and maintenance module includes a wireless communication unit, a computing chip unit and a second signal port (72). The second signal port (72) and the wireless communication unit are signal connected to the computing chip unit. The first signal port (71) and the second signal port (72) are signal connected. The computing chip unit receives current, voltage and temperature sampling data, generates fault codes based on a preset program, and then uploads them to the cloud operation and maintenance platform in real time through the wireless communication unit.

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