A mistaken plug prevention structure for a micro-grid cable connector

Abstract

The utility model relates to a kind of anti-misplug structure for microgrid cable connector, including first socket shell and second socket shell, the opposite side of first socket shell and second socket shell is connected by plug-in component, the distal end of first socket shell is fixedly installed with cable line, the distal end of second socket shell is fixedly installed with identical cable line, and the side of first socket shell and second socket shell is connected and locked by connecting component, connecting component is used for the connection fixed of first socket shell and second socket shell;The utility model is matched by setting asymmetric distribution's anti-miscontact boss and fitting groove, and is guided in combination with identification sheet, double anti-misplug mechanism is realized, only when connector type, direction is completely matched can be successfully docked, fundamentally eliminate the problem, such as polarity reverse connection, ac-dc mixed use or different voltage grade wrong connection, caused by human operation error, improve the electrical safety and operation reliability of microgrid system.

Description

Technical Field

[0001] This utility model relates to the field of cable connector technology, specifically to an anti-misinsertion structure for microgrid cable connectors. Background Technology

[0002] With the rapid development of distributed energy systems, microgrids, as an important carrier for the efficient utilization of renewable energy, have been widely used in industrial parks, power supply in remote areas, smart buildings, and new energy storage systems. During the operation of microgrids, energy exchanges frequently occur between electrical equipment. As a key interface component for the transmission of electrical energy between power sources, loads, and control units, the safety, reliability, and stability of cable connectors directly affect the operating efficiency of the entire system and personal safety. Commonly used cable connectors mostly adopt a pluggable structure, which makes installation and disassembly very convenient and quick, and also provides good waterproof isolation. However, existing microgrid cable connectors have a high risk of mis-mating. Microgrid systems often have multiple voltage levels. If operational errors cause incorrect connection, it can easily lead to problems such as reverse polarity, mixed AC / DC use, or incorrect phase sequence connection. At the same time, cable connectors often operate under high current and long-term energization, which can easily cause heat accumulation. The external protective structure is thick, which makes it difficult for internal heat to dissipate quickly. Based on this, we propose an anti-mis-mating structure for microgrid cable connectors to solve the above problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-misinsertion structure for microgrid cable connectors, which increases the anti-misinsertion effect during insertion and prevents incorrect connection caused by operational errors. It solves the problem that existing microgrid cable connectors have a high risk of misinsertion. Microgrid systems often have multiple voltage levels. If operational errors cause incorrect connection, it is easy to cause problems such as reverse polarity connection, AC / DC mixing, or incorrect phase sequence connection. At the same time, cable connectors often operate under high current and long-term energization, which can easily lead to heat accumulation. The external protective structure is thick, which makes it difficult for internal heat to dissipate quickly.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mis-insertion prevention structure for a microgrid cable connector, comprising a first socket housing and a second socket housing, the opposite sides of the first socket housing and the second socket housing being connected by a plugging assembly, a cable being fixedly installed at the far end of the first socket housing, the same cable being fixedly installed at the far end of the second socket housing, and the sides of the first socket housing and the second socket housing being connected and locked by a connecting assembly, the connecting assembly being used for connecting and fixing the first socket housing and the second socket housing, a ring-shaped array of heat dissipation fins being fixedly installed on the outer wall of the first socket housing, and a heat conduction assembly being provided inside the first socket housing, the heat conduction assembly being used to conduct heat from the heat-generating area to the heat dissipation fins to achieve rapid heat dissipation; The plug assembly includes a plug on the outer shell of a first socket and a mating groove on the surface of a second socket. The surface of the plug has a female groove, and a male pin corresponding to the female groove is fixedly installed in the mating groove. The male pin can be inserted into the female groove to form an electrical connection. The outer wall of the plug has an anti-accidental contact protrusion, and the inner wall of the mating groove has a corresponding fitting groove for the anti-accidental contact protrusion to be inserted. A cleaning component is installed inside the female groove. The cleaning component is used to automatically clean the surface of the male pin during the plugging process.

[0005] Furthermore, the connecting assembly includes connecting holes respectively opened at the ends of the first socket housing and the second socket housing. The connecting screw passes through the two aligned connecting holes and is tightened and fixed by nuts, thereby firmly connecting the first socket housing and the second socket housing, ensuring that the connection structure is firm and reliable, and has good vibration resistance and pull-out resistance.

[0006] Furthermore, the first socket housing and the second socket housing are provided with a label at opposite ends. The label is used to indicate the correct mating direction, helping operators to quickly identify and avoid misalignment during assembly.

[0007] Furthermore, the heat-conducting component includes a heat storage cavity opened inside the first socket housing, a phase change heat storage material filled in the heat storage cavity, and a loop heat pipe disposed in the heat storage cavity. One end of the loop heat pipe extends to the inside of the plug near the heat-generating area, and the other end penetrates into the heat storage cavity and is thermally coupled to the heat dissipation fins. The heat dissipation fins penetrate the outer wall of the first socket housing and extend into the heat storage cavity, forming an efficient heat conduction path that can quickly conduct local high-temperature heat out and dissipate it into the environment.

[0008] It should be noted that phase change thermal storage materials absorb and temporarily store a large amount of heat through changes in state during operation. The preferred phase change thermal storage materials are paraffin-based organic phase change materials (such as n-octadecane and n-eicosane) or inorganic hydrated salts (such as sodium acetate trihydrate and calcium chloride hexahydrate). Their phase change temperature range is set between 65°C and 75°C. The loop heat pipe is used for heat conduction, guiding the heat from the plug part to the thermal storage cavity to achieve heat transfer. After the plug is connected and forms a sleeve, the outer wall is relatively thick, resulting in poor direct heat dissipation, thus making the heat conduction method better.

[0009] Furthermore, the number of female slots and male pins are equal and correspond one-to-one. When the male pin is inserted into the female slot, the outer surface of the male pin is in contact with the conductive area provided on the inner wall of the female slot.

[0010] Furthermore, two anti-misoperation bumps are located on the upper and lower sides of the connector, respectively. The two anti-misoperation bumps are a rectangular block and a cylindrical block. The number and position of the mating grooves correspond one-to-one with the anti-misoperation bumps. Only when the two are fully matched can the connector be fully inserted into the mating groove, forming a dual mechanical identification mechanism to effectively prevent misoperation of connectors of different specifications or types.

[0011] It should be noted that the shape design of the anti-accidental touch bump is not limited to a combination of rectangular and cylindrical blocks. Instead, it can be modularly coded according to the application scenario, electrical parameters and functional type of the connector to form a standardized mechanical identification system. For example, distinguished by voltage level: Low-voltage DC systems (such as 48VDC communication power supplies) use a combination of rectangular blocks and cylindrical blocks; Medium and high voltage DC systems (such as 400VDC energy storage interfaces) adopt a combination of "trapezoidal blocks + cylindrical blocks" or "T-shaped blocks + semi-circular blocks"; High-voltage AC systems (such as 380VAC distribution circuits) use a "double trapezoidal symmetrical structure" or an "eccentric elliptical boss" to distinguish them from DC interfaces; And distinguished by signal type: The power connector and the control signal connector are isolated using completely different bump topologies. For example: The power interface uses a large-sized metal reinforced protrusion; The control cable connector features a miniature plastic bump array, eliminating the possibility of interlocking due to its structural dimensions.

[0012] Furthermore, the cleaning component includes movable grooves symmetrically opened on the inner wall of the mother tank and an arc-shaped cleaning plate slidably installed in the movable groove. The arc-shaped cleaning plate has a semi-circular structure. One end of the arc-shaped cleaning plate is elastically connected to the inner wall of the movable groove by a spring, and the other end of the arc-shaped cleaning plate extends toward the center of the mother tank and is provided with a wiping pad on its surface.

[0013] Furthermore, the wiping pad is made of silicone. When the male pin is inserted into or removed from the female groove, the arc-shaped cleaning plate is always in contact with the surface of the male pin under the action of the spring. During the relative movement, it scrapes and cleans the dust, oxides or moisture residues attached to the surface, keeping the contact interface clean.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The anti-misfit structure for microgrid cable connectors achieves a dual anti-misfit mechanism by setting asymmetrically distributed anti-misfit protrusions and mating grooves, combined with the guidance of the identification plate. It can only be successfully connected when the connector type and orientation are completely matched, fundamentally eliminating problems such as reverse polarity connection, AC / DC mixing, or incorrect connection of different voltage levels caused by human operation errors, thereby improving the electrical safety and operation and maintenance reliability of the microgrid system. 2. The anti-misinsertion structure for microgrid cable connectors adopts a heat-conducting component that combines a loop heat pipe with a phase change heat storage material, and forms an efficient heat dissipation system with annular heat sink fins. This system can quickly conduct Joule heat from the connector area to the external environment, effectively suppressing temperature rise, increasing heat dissipation efficiency, and extending the connector's service life. 3. The anti-misinsertion structure for microgrid cable connectors integrates an elastically driven arc-shaped cleaning plate and a silicone wiping pad inside the female slot, forming an adaptive self-cleaning system. Each insertion and removal action can automatically remove contaminants from the surface of the male pins, reduce the increase in contact resistance, ensure the stability of electrical contact under long-term operation, and reduce the maintenance frequency. It is especially suitable for use in harsh working environments such as outdoor, humid or dusty conditions. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 2 The diagram shown is a schematic representation of the novel structure of the first socket housing of this utility model. Figure 3 The diagram shown is a schematic representation of the novel structure of the second socket housing of this utility model. Figure 4 The diagram shown is a schematic representation of the internal structure of this utility model. Figure 5 This utility model is shown. Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 The diagram shown is a side view of the connector structure of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. First socket housing; 101. Connecting hole; 102. Connecting screw; 2. Second socket housing; 201. Identifier plate; 3. Cable; 4. Connector; 5. Connecting groove; 6. Female groove; 601. Movable groove; 602. Arc-shaped cleaning plate; 7. Male pin; 8. Anti-accidental contact protrusion; 9. Fitting groove; 10. Heat dissipation fins; 11. Heat storage cavity; 12. Loop heat pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-6 This embodiment provides an anti-misinsertion structure for a microgrid cable connector, comprising a first socket housing 1 and a second socket housing 2. The opposite sides of the first socket housing 1 and the second socket housing 2 are connected by a plug-in assembly. A cable 3 is fixedly installed at the distal end of the first socket housing 1, and the same cable 3 is fixedly installed at the distal end of the second socket housing 2. The sides of the first socket housing 1 and the second socket housing 2 are connected and locked by a connecting assembly, which is used to connect and fix the first socket housing 1 and the second socket housing 2. A ring-shaped array of heat dissipation fins 10 is fixedly installed on the outer wall of the first socket housing 1. A heat-conducting component is disposed inside the first socket housing 1 to conduct heat from the heat-generating area to the heat dissipation fins 10, thereby efficiently dissipating the heat. External environment; the plug assembly includes a plug 4 disposed on the first socket housing 1 and a mating groove 5 formed on the surface of the second socket housing 2 and matched therewith. The surface of the plug 4 is provided with a female groove 6. A male pin 7 corresponding to the female groove 6 is fixedly installed in the mating groove 5. The male pin 7 can be inserted into the female groove 6 to form an electrical connection. The outer wall of the plug 4 is provided with an anti-accidental contact protrusion 8. The inner wall of the mating groove 5 is provided with a corresponding fitting groove 9 for the anti-accidental contact protrusion 8 to be inserted. A cleaning component is provided inside the female groove 6. The cleaning component is used to automatically clean the surface of the male pin 7 during the plugging process. An identification piece 201 is provided at one end of the first socket housing 1 and the second socket housing 2 opposite to each other. The identification piece 201 is used to indicate the correct docking direction and assist the operator in quickly identifying the assembly position.

[0019] It should be noted that the number of female slots 6 and male pins 7 are equal and correspond one-to-one, ensuring that each pair of conductive units works independently and avoiding crosstalk or poor contact. When the male pin 7 is inserted into the female slot 6, its outer surface is tightly fitted to the pre-set conductive area (usually silver-plated copper alloy material) on the inner wall of the female slot 6, forming a low-resistance, high-reliability electrical contact interface. The surface of the conductive area is specially treated (such as nickel underlayer + silver coating) to improve oxidation resistance and extend service life. This design is suitable for typical operating conditions of DC 400V / 200A and below microgrids and meets the requirements of relevant standards such as IEC62893 for contact resistance (≤0.5mΩ).

[0020] In this embodiment, the number of female slots 6 and male pins 7 are equal and correspond one-to-one. When the male pin 7 is inserted into the female slot 6, the outer surface of the male pin 7 is in contact with the conductive area provided on the inner wall of the female slot 6. Two anti-accidental contact protrusions 8 are provided on the upper and lower sides of the connector 4, respectively. The two anti-accidental contact protrusions 8 are a rectangular block and a cylindrical block, respectively. The number and position of the mating slots 9 correspond one-to-one with the anti-accidental contact protrusions 8. Only when the two are fully matched can the connector 4 be fully inserted into the mating slot 5.

[0021] It should be noted that the anti-mis-interaction protrusion 8 and the mating groove 9 constitute a physical-level anti-mis-mating mechanism. Only when both protrusions are successfully inserted into their corresponding grooves simultaneously can the connector 4 be fully pushed in. This structure can effectively prevent incorrect mating between connectors of different voltage levels, current capacities, or functional types. For example, low-voltage systems use a "rectangular + cylindrical" combination, while high-voltage systems use a "trapezoidal + offset cylindrical" or other unique coding forms, forming a standardized mechanical identification system and improving on-site operation and maintenance safety.

[0022] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, the connecting assembly includes connecting holes 101 respectively opened at the ends of the first socket housing 1 and the second socket housing 2. The connecting screw 102 passes through the two aligned connecting holes 101 and is tightened by a nut to securely connect the first socket housing 1 and the second socket housing 2.

[0023] It should be noted that the bolt connection method ensures connection stability while facilitating disassembly and assembly. The connecting screw 102 is made of stainless steel and is used in conjunction with a spring washer, providing good corrosion resistance and anti-loosening performance. The edges of the connecting hole 101 are chamfered to facilitate screw alignment and installation.

[0024] Please see Figure 4 and Figure 5 In this embodiment, the heat-conducting component includes a heat storage cavity 11 opened inside the first socket housing 1, a phase change heat storage material filled in the heat storage cavity 11, and a loop heat pipe 12 disposed in the heat storage cavity 11. One end of the loop heat pipe 12 extends to the inside of the plug 4 near the heat-generating area, and the other end passes through the heat storage cavity 11 and is thermally coupled to the heat dissipation fins 10. The heat dissipation fins 10 partially penetrate the outer wall of the first socket housing 1 and extend into the heat storage cavity 11.

[0025] It should be noted that the heat pipe utilizes the evaporation-condensation cycle of the internal working fluid (such as acetone) to rapidly conduct local high-temperature heat to the outside of the shell. The heat dissipation fins 10 extend into the heat storage cavity 11, serving as both a natural convection heat dissipation structure on the outer surface and a secondary heat exchange surface for internal heat release, significantly improving the overall heat dissipation efficiency. This can reduce the maximum operating temperature of the connector by 15–25°C, effectively preventing insulation aging and contact oxidation.

[0026] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6 In this embodiment, the cleaning component includes a movable groove 601 symmetrically opened on the inner wall of the female groove 6 and an arc-shaped cleaning plate 602 slidably installed in the movable groove 601. The arc-shaped cleaning plate 602 has a semi-circular structure. One end of the arc-shaped cleaning plate 602 is elastically connected to the inner wall of the movable groove 601 by a spring. The other end of the arc-shaped cleaning plate 602 extends toward the center of the female groove 6 and a wiping pad is provided on its surface. The wiping pad is made of silicone. When the male pin 7 is inserted into or pulled out of the female groove 6, the arc-shaped cleaning plate 602 always adheres to the surface of the male pin 7 under the action of the spring, and scrapes and cleans the dust, oxides or moisture residue attached to its surface during the relative movement.

[0027] It should be noted that cleaning can be achieved during plugging and unplugging operations. The passive self-cleaning mechanism significantly reduces the tendency of contact resistance to increase over long-term operation, ensuring the stability and reliability of electrical connections.

[0028] Another implementation of the arc-shaped cleaning plate 602 in this embodiment: The arc-shaped cleaning plate 602 adopts a multi-segment composite structure design, including a front scraping section, a middle wiping section, and a tail drainage groove. The front scraping section is located on the side of the arc-shaped cleaning plate 602 closest to the center of the female groove 6, and is provided with a micro-serrated hard scraper made of polyetheretherketone (PEEK) or ceramic-coated metal sheet. It is used to lightly scrape off stubborn oxide layers, carbon deposits, or salt crystals on the surface of the male pin 7 during insertion. The middle wiping section covers the scraping section and is provided with a flexible wiping pad made of silicone material. It has good elasticity and skin-friendly fit and can be used under spring preload. Under the action of force, the silicone wiper tightly covers the surface of the pin, achieving circumferential wiping and removing fine particles and residual debris. A tail-end drainage channel: micro-channels are created on the back of the wiping section to guide the cleaned dust and debris radially to the dust collection chamber (not shown) at the bottom of the movable slot 601, preventing secondary contamination or blockage. When the male pin 7 begins to insert into the female slot 6, its front end first contacts the scraping part of the arc-shaped cleaning plate 602. The hard micro-serrations initially peel off the surface oxide film. As the insertion depth increases, the silicone wiping part fully adheres to the outer wall of the pin, completing circumferential wiping during axial movement. Simultaneously, the detached contaminants are guided by the drainage channel to the dust collection chamber for storage. During the extraction process, the cleaning component acts in the opposite direction again, achieving bidirectional cleaning. Throughout the entire insertion and extraction cycle, the spring or intelligent drive arm maintains appropriate contact pressure to ensure stable and reliable cleaning results.

[0029] The working principle of the above embodiments is as follows: The operator first confirms the correct mating direction of the first socket housing 1 and the second socket housing 2 according to the identification piece 201 to avoid misalignment. Then, the connector 4 is slowly pushed into the mating groove 5. During this process, the anti-mis-contact protrusion 8 must be fully matched with the mating groove 9; otherwise, insertion cannot continue. This physically eliminates the risk of mis-connection between connectors of different types or specifications. Once the insertion begins, the male pin 7 first enters the female groove 6, triggering the elastic deformation of the arc-shaped cleaning plate 602, causing the silicone wiping pad on its surface to adhere tightly to the outer wall of the pin. This completes a dynamic cleaning process throughout the insertion, removing any potential contaminants and ensuring the quality of subsequent electrical contact. As the connector is fully inserted, the conductive areas within the male pin 7 and the female groove 6... The components are now tightly fitted together, forming a low-impedance conductive path, allowing for stable current transmission. At this point, the connecting screws 102 in the connecting assembly pass through the connecting holes 101 at both ends and are locked with nuts, further reinforcing the overall structure and preventing loosening due to vibration or external force. During power-on operation, the temperature of the plug-in area gradually increases due to contact resistance and current-carrying heating. The heat is first rapidly conducted to the heat storage chamber 11 by the loop heat pipe 12, while simultaneously activating the phase change heat storage material to undergo a solid-liquid phase change, absorbing a large amount of heat and suppressing the rate of temperature rise. The stored heat is continuously dissipated to the surrounding air through the heat dissipation fins 10 connected to the heat storage chamber 11, achieving long-term cooling through natural convection. The entire heat conduction system does not require external energy drive and has the characteristics of self-adaptation and high reliability.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing mis-mating of cable connectors in microgrids, characterized in that: It includes a first socket housing (1) and a second socket housing (2). The opposite sides of the first socket housing (1) and the second socket housing (2) are connected by a plug-in assembly. A cable (3) is fixedly installed at the far end of the first socket housing (1). The same cable (3) is fixedly installed at the far end of the second socket housing (2). The sides of the first socket housing (1) and the second socket housing (2) are connected and locked by a connecting assembly. The connecting assembly is used to connect and fix the first socket housing (1) and the second socket housing (2). A ring array of heat dissipation fins (10) is fixedly installed on the outer wall of the first socket housing (1). A heat conduction assembly is provided inside the first socket housing (1). The heat conduction assembly is used to conduct heat from the heat-generating area to the heat dissipation fins (10). The plug assembly includes a plug (4) disposed on the first socket housing (1) and a mating groove (5) formed on the surface of the second socket housing (2) and matched therewith. A female groove (6) is formed on the surface of the plug (4). A male pin (7) corresponding to the female groove (6) is fixedly installed in the mating groove (5). The male pin (7) can be inserted into the female groove (6) to form an electrical connection. An anti-accidental contact protrusion (8) is provided on the outer wall of the plug (4). A matching groove (9) for the anti-accidental contact protrusion (8) to be embedded is formed on the inner wall of the mating groove (5). A cleaning component is provided inside the female groove (6). The cleaning component is used to automatically clean the surface of the male pin (7) during the plugging process.

2. The anti-misplug structure for a microgrid cable connector according to claim 1, characterized in that: The connecting assembly includes connecting holes (101) respectively opened at the ends of the first socket housing (1) and the second socket housing (2). A connecting screw (102) passes through the two aligned connecting holes (101) and is tightened by a nut, thereby firmly connecting the first socket housing (1) and the second socket housing (2).

3. The anti-mis-mating structure for a microgrid cable connector according to claim 2, characterized in that: The first socket housing (1) and the second socket housing (2) are provided with an identification plate (201) at opposite ends. The identification plate (201) is used to indicate the correct mating direction of the two.

4. The anti-misplug structure for a microgrid cable connector of claim 1, wherein: The heat-conducting component includes a heat storage cavity (11) opened inside the first socket housing (1), a phase change heat storage material filled in the heat storage cavity (11), and a loop heat pipe (12) disposed in the heat storage cavity (11). One end of the loop heat pipe (12) extends to the inside of the plug (4) near the heat-generating area, and the other end passes through the heat storage cavity (11) and is thermally coupled with the heat dissipation fins (10). The heat dissipation fins (10) partially pass through the outer wall of the first socket housing (1) and extend into the heat storage cavity (11).

5. The anti-misplug structure for a microgrid cable connector of claim 1, wherein: The number of female slots (6) and male pins (7) are equal and correspond one-to-one. When the male pin (7) is inserted into the female slot (6), the outer surface of the male pin (7) is attached to the conductive area set on the inner wall of the female slot (6).

6. The anti-misplug structure for a microgrid cable connector of claim 1, wherein: Two anti-accidental contact protrusions (8) are located on the upper and lower sides of the connector (4). The two anti-accidental contact protrusions (8) are rectangular blocks and cylindrical blocks respectively. The number and position of the mating grooves (9) correspond one-to-one with the anti-accidental contact protrusions (8). Only when the two are fully matched can the connector (4) be fully inserted into the mating groove (5).

7. The anti-mismating structure for a microgrid cable connector according to claim 1, characterized in that: The cleaning component includes a movable groove (601) symmetrically opened on the inner wall of the mother groove (6) and an arc-shaped cleaning plate (602) slidably installed in the movable groove (601). The arc-shaped cleaning plate (602) has a semi-circular structure. One end of the arc-shaped cleaning plate (602) is elastically connected to the inner wall of the movable groove (601) by a spring. The other end of the arc-shaped cleaning plate (602) extends toward the center of the mother groove (6) and a wiping pad is provided on its surface.

8. A misplug prevention structure for a microgrid cable connector according to claim 7, characterized in that: The wiping pad is made of silicone. When the male pin (7) is inserted into or pulled out of the female groove (6), the arc-shaped cleaning plate (602) is always attached to the surface of the male pin (7) under the action of the spring, and scrapes and cleans the dust, oxides or moisture residues attached to its surface during the relative movement.

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