A power-on detection structure for a large-current plug pin of a charging gun

Abstract

The utility model discloses a kind of power-on detection structure for charging gun large-current pin, belong to charging gun large-current pin technical field, its technical scheme main points include bottom plate, the top of the bottom plate is provided with pin body, the top of the bottom plate is fixedly connected with arc insulating plate, the front side of the arc insulating plate is provided with insulating baffle, the top of the bottom plate is separately provided with negative electrode power line and positive electrode power line, the inside of the positive electrode power line is equipped with ammeter, solve the existing part small-scale charging gun large-current pin manufacturer, limited to the high cost of automatic detection equipment, still adopt traditional mode of manual charging gun large-current pin insertion equipment detection, force plug-in and pass in large current in operation need artificial alignment jack, and charging gun large-current pin is mostly smooth hard metal material, handheld slippery, lead to inconvenient plug-in, and there are burn, electric shock risk and other safety hidden trouble problems.

Description

Technical Field

[0001] This utility model relates to the field of high-current connector technology for charging guns, and in particular to a power-on detection structure for high-current connectors of charging guns. Background Technology

[0002] The high-current connector of the charging gun is a core conductive component used to transmit high-power current in the charging gun of new energy vehicles. It is the bridge for realizing the efficient transmission of electrical energy from the charging pile to the vehicle battery. Its design and performance directly affect the charging speed, safety and reliability.

[0003] Some small-scale manufacturers of high-current charging gun pins are still using the traditional method of manually inserting the high-current charging gun pins into the equipment for testing due to the high cost of automated testing equipment. During operation, it is necessary to manually align the pin with the socket, apply force to insert and pull it, and apply a large current. However, the high-current charging gun pins are mostly made of smooth, hard metal, which is easy to slip when held, making insertion and removal inconvenient and posing safety hazards such as burns and electric shock.

[0004] To address this, a current-pass detection structure for high-current pins in charging guns is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a current-pass detection structure for high-current charging gun pins. This can solve the problem that some small-scale manufacturers of high-current charging gun pins are limited by the high cost of automated testing equipment and still use the traditional method of manually inserting the high-current charging gun pins into the equipment for testing. During operation, it is necessary to manually align the pin with the socket, apply force to insert and pull it, and pass in a large current. However, the high-current charging gun pins are mostly made of smooth and hard metal, which is easy to slip when held, making insertion and removal inconvenient and posing safety hazards such as burns and electric shock risks.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power-on detection structure for a high-current plug of a charging gun, comprising a base plate, a plug body disposed on the top of the base plate, an arc-shaped insulating plate fixedly connected to the top of the base plate, an insulating baffle disposed on the front side of the arc-shaped insulating plate, a negative power line and a positive power line disposed on the top of the base plate respectively, an ammeter installed inside the positive power line, a plugging mechanism disposed on the top of the base plate, and a conductive mechanism disposed on the top of the base plate;

[0007] The insertion mechanism includes a fixed sleeve, a pull plate, a support plate, and two slides. The front side of the fixed sleeve is fixedly connected to the rear side of the pull plate, the bottom of the pull plate is fixedly connected to the top of the support plate, and the side of the slides near the support plate is fixedly connected to the support plate. The pin body is movably disposed inside the fixed sleeve, and the bottom of the pin body contacts the top of the support plate.

[0008] Preferably, the conductive mechanism includes a first retaining ring, a fixing frame, a second retaining ring, and two supports. The two supports are fixedly connected to the surfaces of the first retaining ring and the second retaining ring, respectively. The bottom of the bottom support is fixedly connected to the top of the base plate. The bottom of the fixing frame is fixedly connected to the top of the base plate. The surface of the top support is fixedly connected to the surface of the fixing frame. The pin body is engaged between the interior of the first retaining ring and the second retaining ring.

[0009] Preferably, the front side of the negative power line is electrically connected to the rear side of the first retaining ring, and the front side of the positive power line is electrically connected to the rear side of the second retaining ring.

[0010] Preferably, a support frame is fixedly connected to the top of the fixing frame, and a temperature sensor is fixedly connected to the surface of the support frame, with the bottom of the temperature sensor contacting the top of the pin body.

[0011] Preferably, the base plate has grooves on both sides, the slide is slidably connected inside the grooves, and the front side of the pull plate is fixedly connected to a pull ring.

[0012] Preferably, limiting plates are fixedly connected to both sides of the top of the base plate, and the insulating baffle is inserted between the limiting plate and the opposite side of the arc-shaped insulating plate. The first retaining ring and the second retaining ring are both located between the opposite side of the arc-shaped insulating plate and the insulating baffle. The arc-shaped insulating plate and the insulating baffle are both made of glass fiber reinforced plastic.

[0013] Preferably, the insulating baffle has a notch inside, the fixing sleeve and the support plate are both located inside the notch, a pull block is fixedly connected to the front side of the insulating baffle, and positioning blocks are fixedly connected to both the front and rear sides of the base plate.

[0014] Preferably, the fixing sleeve, pull plate, support plate, slide, pull ring, fixing frame, bracket and base plate are all made of polytetrafluoroethylene, and the first retaining ring and the second retaining ring are both made of beryllium copper.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application sets up a plug-in mechanism with a fixed sleeve, support plate, pull plate and slide as the core of the PTFE material. After the pin body is put into the fixed sleeve, the bottom is supported by the support plate. By holding the PTFE pull ring, the pull plate is driven, so that the slide slides smoothly along the bottom plate slide groove, pushing the pin body backward into the first and second retaining rings in the conductive mechanism to form a docking. When disassembling the pin body, it is only necessary to pull the pull ring forward, so that the fixed sleeve pulls the pin body forward, which can disengage the first and second retaining rings. The overall structure is labor-saving and stable to push, which is suitable for manual operation scenarios, solves the problems of hand-held pin slippage and inconvenient insertion and removal, and reduces the difficulty of operation.

[0017] 2. This application employs a conductive mechanism, using a first and second retaining ring made of beryllium copper, which are fixed to a PTFE mounting bracket via a support. This ensures stable conductivity after the pin body is engaged. The positive and negative power lines are connected to the retaining rings to form a detection circuit. An ammeter monitors the current in real time to reflect the conductivity of the pin body. A temperature sensor on the mounting bracket directly contacts the pin body to monitor abnormal heating. The retaining rings are encased in a protective space by a glass fiber reinforced plastic insulating baffle and an arc-shaped insulating plate. Combined with the insulation of the PTFE components, this effectively isolates live parts and avoids the risk of burns and electric shocks. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the power-on detection structure for the high-current pin of a charging gun according to this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the front side of the arc-shaped insulating plate in this utility model;

[0020] Figure 3 This is a three-dimensional connection diagram of the plug-in mechanism in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the rear side of the first retaining ring and the second retaining ring in this utility model;

[0022] Figure 5 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 6 This diagram illustrates the three-dimensional connection between the insulating baffle and the pull block in this utility model.

[0024] In the diagram, 1. Base plate; 2. Positioning block; 3. Insulating baffle; 4. Arc-shaped insulating plate; 5. Pin body; 6. Negative power line; 7. Positive power line; 8. Plug-in mechanism; 801. Fixing sleeve; 802. Pull plate; 803. Support plate; 804. Slide; 9. Conductive mechanism; 901. First retaining ring; 902. Fixing frame; 903. Second retaining ring; 904. Bracket; 10. Ammeter; 11. Pull ring; 12. Support frame; 13. Temperature sensor; 14. Slide groove; 15. Limiting plate; 16. Pull block; 17. Notch. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-6 The present invention provides the following technical solution:

[0027] A current detection structure for a high-current plug for a charging gun includes a base plate 1, a plug body 5 on the top of the base plate 1, an arc-shaped insulating plate 4 fixedly connected to the top of the base plate 1, an insulating baffle 3 on the front side of the arc-shaped insulating plate 4, a negative power line 6 and a positive power line 7 respectively on the top of the base plate 1, an ammeter 10 installed inside the positive power line 7, a plugging mechanism 8 on the top of the base plate 1, and a conductive mechanism 9 on the top of the base plate 1.

[0028] The insertion mechanism 8 includes a fixed sleeve 801, a pull plate 802, a support plate 803, and two slides 804. The front side of the fixed sleeve 801 is fixedly connected to the rear side of the pull plate 802, the bottom of the pull plate 802 is fixedly connected to the top of the support plate 803, and the side of the slide 804 near the support plate 803 is fixedly connected to the support plate 803. The pin body 5 is movably disposed inside the fixed sleeve 801, and the bottom of the pin body 5 contacts the top of the support plate 803.

[0029] In this embodiment: Based on the PTFE base plate 1, the positioning blocks 2 on both sides of the base plate 1 can be fixed to the external testing platform by external bolts. During testing, the pin body 5 is placed into the PTFE fixing sleeve 801, with the bottom contacting the PTFE support plate 803. The PTFE pull ring 11 is held to drive the pull plate 802, causing the slide 804 to slide backward along the slide groove 14 of the base plate 1, pushing the pin to engage between the first and second beryllium copper retaining rings 901 and 903. The retaining rings are fixed by the bracket 904. The bottom bracket 904 is connected to the base plate 1, and the top bracket 904 is connected to the PTFE fixing frame 902 to ensure stability. After engagement, the glass fiber reinforced plastic insulating baffle 3 is inserted between the limiting plate 15 and the arc-shaped insulating plate 4 of the same material by holding the pull block 16 to form a protective space. The fixing sleeve 801 and the support plate 803 are located within the baffle notch 17 to avoid... Without interference, the positive power line 7 and negative power line 6 are connected to the detection power supply. The ammeter 10 inside the positive power line 7 measures the current, and the temperature sensor 13 on the mounting bracket 902 touches the pin to measure the temperature. The current reflects the conductivity of the pin body 5, and the temperature monitors for potential overheating. Utilizing the good insulation properties of polytetrafluoroethylene and glass fiber reinforced plastic, safe and stable detection is achieved. This method is suitable for small manufacturers with limited costs. It solves the problem that some small-scale charging gun high-current pin manufacturers are limited by the high cost of automated testing equipment and still use the traditional method of manually inserting the high-current pin of the charging gun into the equipment for testing. During operation, it is necessary to manually align the pin with the socket, apply force to insert and pull it, and pass in a large current. However, the high-current pin of the charging gun is mostly made of smooth and hard metal, which is easy to slip when held, making insertion and removal inconvenient and posing safety hazards such as burns and electric shock.

[0030] Specifically, such as Figure 4 As shown, the conductive mechanism 9 includes a first retaining ring 901, a fixing frame 902, a second retaining ring 903, and two supports 904. The two supports 904 are fixedly connected to the surfaces of the first retaining ring 901 and the second retaining ring 903, respectively. The bottom of the bottom support 904 is fixedly connected to the top of the base plate 1, the bottom of the fixing frame 902 is fixedly connected to the top of the base plate 1, and the surface of the top support 904 is fixedly connected to the surface of the fixing frame 902. The pin body 5 is engaged between the interior of the first retaining ring 901 and the second retaining ring 903.

[0031] Specifically, such as Figure 2 and Figure 4 As shown, the front side of the negative power line 6 is electrically connected to the rear side of the first retaining ring 901, and the front side of the positive power line 7 is electrically connected to the rear side of the second retaining ring 903.

[0032] Specifically, such as Figure 2 and Figure 4 As shown, a support frame 12 is fixedly connected to the top of the fixing frame 902, and a temperature sensor 13 is fixedly connected to the surface of the support frame 12. The bottom of the temperature sensor 13 is in contact with the top of the pin body 5.

[0033] In this embodiment: the conductive mechanism 9 fixes the first retaining ring 901 and the second retaining ring 903 to the bracket 904 and the fixing frame 902. The beryllium copper retaining rings ensure stable conductive contact of the pin body 5. It is electrically connected with the positive power line 7 and the negative power line 6 to form a detection circuit. The ammeter 10 monitors the current in real time to reflect the conductivity of the pin body 5. The temperature sensor 13 on the fixing frame 902 directly contacts the pin and can accurately detect abnormal heating, so as to realize the simultaneous detection of conductivity and safety hazards.

[0034] Specifically, such as Figure 5 As shown, both sides of the base plate 1 are provided with sliding grooves 14, the slide 804 is slidably connected inside the sliding grooves 14, and the front side of the pull plate 802 is fixedly connected with a pull ring 11.

[0035] Specifically, such as Figure 5 and Figure 6 As shown, limit plates 15 are fixedly connected to both sides of the top of the base plate 1. The insulating baffle 3 is inserted between the limit plate 15 and the opposite side of the arc-shaped insulating plate 4. The first retaining ring 901 and the second retaining ring 903 are both located between the opposite side of the arc-shaped insulating plate 4 and the insulating baffle 3. The arc-shaped insulating plate 4 and the insulating baffle 3 are both made of glass fiber reinforced plastic.

[0036] In this embodiment: the slide 804 slides along the slide groove 14 to make the push of the pin body 5 more stable, the pull ring 11 is easy to operate, the limiting plate 15 cooperates with the arc-shaped insulating plate 4 to limit the insulating baffle 3 made of glass fiber reinforced plastic, and wraps the conductive first retaining ring 901 and second retaining ring 903 to form a protective space. The arc-shaped insulating plate 4 and the insulating baffle 3 made of glass fiber reinforced plastic effectively isolate the live parts, improve the safety of operation, and avoid the risk of electric arc exposure.

[0037] Specifically, such as Figure 1 and Figure 6 As shown, the insulating baffle 3 has a notch 17 inside, and the fixing sleeve 801 and the support plate 803 are both located inside the notch 17. A pull block 16 is fixedly connected to the front side of the insulating baffle 3, and positioning blocks 2 are fixedly connected to both the front and rear sides of the base plate 1.

[0038] Specifically, such as Figure 3 and Figure 4 As shown, the fixed sleeve 801, pull plate 802, support plate 803, slide 804, pull ring 11, fixed frame 902, bracket 904 and base plate 1 are all made of polytetrafluoroethylene, and the first retaining ring 901 and the second retaining ring 903 are both made of beryllium copper.

[0039] In this embodiment: the notch 17 of the insulating baffle 3 avoids conflict with the fixing sleeve 801 and the support plate 803; the pull block 16 facilitates the insertion and removal of the insulating baffle 3; the positioning block 2 ensures the stable installation of the base plate 1; the fixing sleeve 801, pull plate 802, support plate 803, slide 804, pull ring 11, fixing frame 902, bracket 904 and base plate 1 made of polytetrafluoroethylene have excellent insulation; the first retaining ring 901 and the second retaining ring 903 made of beryllium copper combine conductivity and elasticity, making it convenient to snap the pin body 5; the overall structure has low cost and reliable insulation, which is suitable for the low-cost testing needs of small manufacturers, and the operation is safe and convenient.

[0040] Working principle: The base plate 1, made of polytetrafluoroethylene (PTFE), serves as the primary support component. Positioning blocks 2 are fixedly connected to the front and rear sides of the base plate 1, facilitating the use of external bolts for fixation to the external testing platform. During testing, the pin body 5 is placed inside the PTFE-made fixing sleeve 801. The bottom of the pin body 5 contacts the top of the PTFE-made support plate 803. By holding the PTFE-made pull ring 11, the pull plate 802 is moved, causing the slide 804, whose bottom is fixedly connected to the support plate 803, to slide backward along the grooves 14 on both sides of the base plate 1. This pushes the pin body 5 between the first retaining ring 901 and the second retaining ring 903, made of beryllium copper, and achieves engagement. The first retaining ring 901 and the second retaining ring 903... The retaining ring 903 is fixed by the bracket 904. The bottom bracket 904 is connected to the base plate 1, and the top bracket 904 is fixed to the surface of the polytetrafluoroethylene fixing frame 902. The bottom of the fixing frame 902 is fixed to the top of the base plate 1 to ensure the stability of the conductive mechanism 9. After the pin body 5 is engaged, the glass fiber reinforced plastic insulating baffle 3 is inserted between the limiting plate 15 and the glass fiber reinforced plastic arc-shaped insulating plate 4 on the opposite side using the hand pull block 16. At this time, the first retaining ring 901 and the second retaining ring 903 are located between the arc-shaped insulating plate 4 and the insulating baffle 3 to form a protective space. The fixing sleeve 801 and the support plate 803 are located within the notch 17 opened inside the insulating baffle 3 to avoid interference. By connecting the positive power line 7 and the negative power line 803, the conductive mechanism 9 can be connected to the base plate 1. The power supply line 6 is connected to the power source. The ammeter 10 installed inside the positive power line 7 is used to detect the circuit current. A temperature sensor 13 is installed on the support frame 12 fixed to the top of the mounting bracket 902. Its bottom contacts the top of the pin body 5 to monitor the temperature. The ammeter 10 can directly reflect the conductivity of the pin body 5 by observing the change in current. Temperature detection is necessary because if the pin has defects such as excessive contact resistance when a large current passes through, it will cause abnormal heating. Abnormal temperature can detect safety hazards in time. Through the good insulation of polytetrafluoroethylene material and glass fiber reinforced plastic, safe and stable detection of the high current pin body 5 of the charging gun is achieved. It is suitable for manufacturers of small charging guns with limited production costs to monitor the high current pin body 5. The high-current charging gun pin body 5 is tested for power-on. After the test is completed, the test power is turned off, the insulating baffle 3 is pulled up to remove it, and the pull ring 11 can be pulled forward to move the fixing sleeve 801 forward, which in turn moves the pin body 5 forward, disengaging the first retaining ring 901 and the second retaining ring 903, making it easy to disassemble the pin body 5. This solves the problem that some small-scale charging gun high-current pin manufacturers are limited by the high cost of automated testing equipment and still use the traditional method of manually inserting the high-current charging gun pin into the equipment for testing. During operation, it is necessary to manually align the pin with the socket, apply force to insert and pull it, and apply a high current. However, the high-current charging gun pins are mostly made of smooth and hard metal, which is easy to slip when held, making insertion and removal inconvenient and posing safety hazards such as burns and electric shock.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A current-contact detection structure for a high-current connector of a charging gun, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a pin body (5), the top of the base plate (1) is fixedly connected with an arc-shaped insulating plate (4), the front side of the arc-shaped insulating plate (4) is provided with an insulating baffle (3), the top of the base plate (1) is provided with a negative power line (6) and a positive power line (7), the positive power line (7) is installed with an ammeter (10), the top of the base plate (1) is provided with a plug-in mechanism (8), and the top of the base plate (1) is provided with a conductive mechanism (9). The insertion mechanism (8) includes a fixed sleeve (801), a pull plate (802), a support plate (803), and two slides (804). The front side of the fixed sleeve (801) is fixedly connected to the rear side of the pull plate (802). The bottom of the pull plate (802) is fixedly connected to the top of the support plate (803). The side of the slide (804) near the support plate (803) is fixedly connected to the support plate (803). The pin body (5) is movably disposed inside the fixed sleeve (801). The bottom of the pin body (5) contacts the top of the support plate (803).

2. The energization detection structure for a high-current connector of a charging gun according to claim 1, characterized in that: The conductive mechanism (9) includes a first retaining ring (901), a fixing frame (902), a second retaining ring (903), and two supports (904). The two supports (904) are fixedly connected to the surfaces of the first retaining ring (901) and the second retaining ring (903), respectively. The bottom of the bottom support (904) is fixedly connected to the top of the base plate (1). The bottom of the fixing frame (902) is fixedly connected to the top of the base plate (1). The surface of the top support (904) is fixedly connected to the surface of the fixing frame (902). The pin body (5) is engaged between the interior of the first retaining ring (901) and the second retaining ring (903).

3. The energization detection structure for a high-current connector of a charging gun according to claim 2, characterized in that: The front side of the negative power line (6) is electrically connected to the rear side of the first retaining ring (901), and the front side of the positive power line (7) is electrically connected to the rear side of the second retaining ring (903).

4. The energization detection structure for a high-current connector of a charging gun according to claim 2, characterized in that: A support frame (12) is fixedly connected to the top of the fixing frame (902), and a temperature sensor (13) is fixedly connected to the surface of the support frame (12). The bottom of the temperature sensor (13) is in contact with the top of the pin body (5).

5. The energization detection structure for a high-current connector of a charging gun according to claim 2, characterized in that: The base plate (1) has sliding grooves (14) on both sides, the slide (804) is slidably connected inside the sliding groove (14), and the front side of the pull plate (802) is fixedly connected with a pull ring (11).

6. The energization detection structure for a high-current connector of a charging gun according to claim 2, characterized in that: Limiting plates (15) are fixedly connected to both sides of the top of the base plate (1). The insulating baffle (3) is inserted between the limiting plate (15) and the opposite side of the arc-shaped insulating plate (4). The first retaining ring (901) and the second retaining ring (903) are both located between the opposite side of the arc-shaped insulating plate (4) and the insulating baffle (3). The arc-shaped insulating plate (4) and the insulating baffle (3) are both made of glass fiber reinforced plastic.

7. The energization detection structure for a high-current connector of a charging gun according to claim 1, characterized in that: The insulating baffle (3) has a notch (17) inside. The fixing sleeve (801) and the support plate (803) are both located inside the notch (17). A pull block (16) is fixedly connected to the front side of the insulating baffle (3). Positioning blocks (2) are fixedly connected to both the front and rear sides of the bottom plate (1).

8. The energization detection structure for a high-current connector of a charging gun according to claim 5, characterized in that: The fixed sleeve (801), pull plate (802), support plate (803), slide (804), pull ring (11), fixed frame (902), bracket (904) and base plate (1) are all made of polytetrafluoroethylene, and the first retaining ring (901) and the second retaining ring (903) are both made of beryllium copper.

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