New energy charging gun capable of performing efficient cooling

Abstract

The invention relates to a new energy charging gun capable of performing efficient cooling, and belongs to the technical field of charging equipment. The charging gun aims at solving the problems that an existing charging gun is low in heat dissipation efficiency during large-current transmission, and long-time and high-power charging stable operation cannot be guaranteed. According to the technical scheme, a plug-in mechanism, a liquid cooling mechanism, an air cooling mechanism and a cable are arranged in a charging gun shell; the plug-in mechanism penetrates through the liquid cooling mechanism, the liquid cooling mechanism cools the plug-in mechanism, and the air cooling mechanism performs air cooling on heat output by the liquid cooling mechanism; the cable comprises a low-resistance lead, so that current loss is reduced. According to the charging gun, the plug-in guide rod is continuously cooled in a mode that liquid cooling is matched with air cooling, it is ensured that the charging gun stably operates during long-time and high-power charging, and the rapid charging requirement of a new energy automobile is met.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a new energy charging gun capable of efficient cooling. Background Art

[0002] With the rapid development of the new energy vehicle industry, new energy vehicles are becoming increasingly popular. As a key device for recharging new energy vehicles, the demand for new energy charging guns is also increasing. During the charging process, the charging gun needs to deliver a high current to the vehicle battery to meet the demand for fast charging.

[0003] However, during high-current transmission, the internal components of the charging gun, such as the plug-in rod, generate significant heat due to the thermal effects of the current. If this heat cannot be dissipated promptly and effectively, it can cause the temperature of the components to rise sharply. High temperatures not only accelerate the aging of the components and reduce their service life, but can also pose safety hazards. For example, overheating can damage the insulation material, leading to serious accidents such as short circuits and even fires.

[0004] Furthermore, existing charging gun cooling methods are relatively limited, mostly relying solely on natural heat dissipation or simple air cooling. Natural heat dissipation is extremely inefficient and cannot meet the heat dissipation requirements of high-current charging. Simple air cooling, on the other hand, is limited in its effectiveness in heat transfer due to the low thermal conductivity of air. Especially as charging power continues to increase, traditional cooling methods can no longer guarantee stable operation of charging guns during long-term, high-power charging, severely restricting the development and popularization of new energy vehicle charging technology. Therefore, developing a new energy charging gun with efficient cooling capabilities is of great practical significance. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the existing charging gun has low heat dissipation efficiency when transmitting large currents and cannot ensure long-term, high-power charging and stable operation, and to propose a new energy charging gun that can perform efficient cooling.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A new energy charging gun capable of efficient cooling, comprising:

[0008] Charging gun shell;

[0009] A plug-in mechanism installed in the charging gun housing, one side of which extends to the outside of the charging gun housing, and the plug-in mechanism is used to cooperate with the charging port on the new energy vehicle to charge the battery in the new energy vehicle;

[0010] A liquid cooling mechanism installed in the charging gun housing, wherein the plug-in mechanism passes through the liquid cooling mechanism, and the liquid cooling mechanism is used to cool the plug-in mechanism;

[0011] An air cooling mechanism installed on the liquid cooling mechanism, used to cool the heat output by the liquid cooling mechanism by air, so that the liquid cooling mechanism can continuously cool the plug-in mechanism;

[0012] A cable electrically connected to the plug-in mechanism, the cable being used to electrically connect to the charging pile and supply power to the plug-in mechanism;

[0013] In which, the plug-in mechanism includes a plurality of plug-in conductive rods, the liquid cooling mechanism includes a first cooling box and a second cooling box, the plug-in conductive rods pass through the first cooling box and the second cooling box and are fixedly connected to the liquid cooling mechanism, the air cooling mechanism includes a drive motor and blades, the drive motor is used to drive the blades to rotate to dissipate heat, and the cable includes a plurality of low-resistance wires, and the low-resistance wires are used to reduce losses when transmitting current.

[0014] In a possible design, the plug-in mechanism also includes a support plate fixedly installed in the charging gun housing, and a plurality of plug-in guide rods are fixedly installed at equal intervals on the support plate, one end of the plug-in guide rod extends to the outside of the charging gun housing, and the other ends of the plurality of plug-in guide rods are connected to the same power connection component, and the power connection component is electrically connected to the cable.

[0015] In one possible design, the power connection assembly includes a power connection pole fixedly installed at the other end of the plug-in conductive rod, the power connection pole is electrically connected to the plug-in conductive rod, and the same fixing ring is fixedly sleeved on multiple power connection poles. A plug-in ring is fixedly installed at one end of the power connection pole, and the power connection pole is electrically connected to the plug-in ring. A positioning screw is threadedly connected to the inner wall of one side of the plug-in ring, and one end of the positioning screw is located in the plug-in ring and is rotatably connected to a pressure rod, and the cable is clamped with multiple pressure rods respectively to achieve electrical connection.

[0016] In one possible design, the liquid cooling mechanism includes a first cooling box fixedly mounted on one side of the support plate, a plurality of heat exchange elbows fixedly mounted at equal intervals in the first cooling box, a second cooling box fixedly mounted on the other side of the support plate, a plurality of heat exchange straight tubes fixedly mounted at equal intervals in the second cooling box, the plug-in conductive rods respectively penetrate the corresponding heat exchange elbows and heat exchange straight tubes and are fixedly connected through a thermal expansion compensation structure, the first cooling box and the second cooling box are both filled with coolant, and the first cooling box and the second cooling box are connected through a fluid pipeline to form a coolant circulation path.

[0017] In a possible design, multiple heat conducting plates are fixedly installed at equal intervals in the first cooling box, a first heat conducting frame located in the first cooling box is fixedly installed on the heat conducting plates, a same heat absorbing network pipe is fixedly installed on one side of the multiple first heat conducting frames, a same heat dissipation frame located in the charging gun housing is fixedly installed on one side of the multiple heat conducting plates, and the air cooling mechanism is respectively connected to the multiple heat conducting plates.

[0018] In a possible design, the other side of the heat conducting plate extends into the second cooling box, a second heat conducting frame located in the second cooling box is fixedly mounted on the heat conducting plate, and a heat absorbing mesh plate is fixedly mounted on one side of the second heat conducting frame.

[0019] In one possible design, it is characterized in that the air cooling mechanism includes a fixed frame fixedly connected to a plurality of heat conducting plates, a driving motor is fixedly mounted on the fixed frame via a vibration damping pad, blades are fixedly mounted on the output shaft of the driving motor, and the driving motor is used to drive the blades to rotate to blow air to the heat dissipation frame to dissipate heat.

[0020] In a possible design, a plurality of low-resistance wires are provided in the cable, and one end of the low-resistance wire extends into a corresponding insert ring and is clamped with the pressure rod.

[0021] In a possible design, a waterproof ring is further included, which is fixedly mounted on one side of the second cooling box and extends to the outside of the charging gun housing, and is used to prevent water when the plug-in guide rod is matched with the charging interface.

[0022] In the present application, when the technical solution is in use, the cable is pre-connected to the charging pile, and then the low-resistance wire is inserted into the plug-in ring. The positioning screw is then rotated to drive the pressure rod to move, and the pressure rod is used to clamp and position the low-resistance wire, so that the low-resistance wire is tightly electrically connected to the plug-in ring. The low-resistance wire can reduce current loss when transmitting current, thereby improving the charging efficiency when charging new energy vehicles. When current is transmitted through the plug-in conductive rod, the temperature of the plug-in conductive rod itself will increase. Since the plug-in conductive rod is stably fitted with the heat exchange elbow and the heat exchange straight pipe respectively, the heat generated by the plug-in conductive rod when transmitting current can be transmitted through the heat exchange elbow and the heat exchange straight pipe to the corresponding coolant, thereby enabling the plug-in to be charged under the principle of heat exchange. The guide rod is cooled down. After the coolant in the first cooling box absorbs a certain amount of heat, the heat-absorbing mesh pipe can absorb the heat in the coolant, and then the heat can be transported outward to the heat sink through the first heat-conducting frame and the heat-conducting plate. At the same time, after the coolant in the second cooling box absorbs a certain amount of heat, the heat-absorbing mesh plate can absorb the heat in the coolant, and then the heat can be transported outward to the heat sink through the second heat-conducting frame and the heat-conducting plate. The driving motor can be started to drive the blades to rotate, so that air can be blown onto the heat sink, so that the heat concentrated on the heat sink can be dissipated, thereby reducing the temperature of the heat sink and making the heat sink have a continuous heat absorption effect, thereby ensuring the stable current transmission of the plug-in guide rod to charge the new energy vehicle.

[0023] In the present invention, the new energy charging gun capable of efficient cooling can be provided with multiple plug-in guide rods through a plug-in mechanism, which can be plugged into and matched with the charging interface on the new energy vehicle, thereby enabling charging of the new energy vehicle. At the same time, the plug-in guide rods are connected to the liquid cooling mechanism, so that the plug-in guide rods can be cooled during the power transmission process to ensure stable current transmission of the plug-in guide rods and avoid overheating problems.

[0024] In the present invention, the new energy charging gun capable of efficient cooling can stably fit the plug-in conductive rod with the heat exchange elbow and the heat exchange straight pipe respectively through the liquid cooling mechanism, so that when the plug-in conductive rod transmits current, the heat generated can be transferred to the corresponding coolant through the heat exchange elbow and the heat exchange straight pipe, thereby achieving cooling of the plug-in conductive rod under the action of the heat exchange principle;

[0025] In the present invention, the new energy charging gun capable of efficient cooling uses an air cooling mechanism. By starting a drive motor to drive the blades to rotate, air can be blown onto the heat dissipation frame, thereby dissipating the heat concentrated on the heat dissipation frame, thereby reducing the temperature of the heat dissipation frame and enabling the heat dissipation frame to have a continuous heat absorption effect.

[0026] The present invention can continuously cool the plug-in guide rod for charging new energy vehicles, and the cooling method adopted is a heat exchange liquid cooling combined with air cooling, which can achieve stable and continuous cooling of the plug-in guide rod, so as to achieve stable charging of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional schematic diagram of the first-person perspective structure of a new energy charging gun with efficient cooling proposed by the present invention;

[0028] Figure 2 This is a three-dimensional schematic diagram of the second-view structure of a new energy charging gun capable of efficient cooling proposed by the present invention;

[0029] Figure 3 This is a schematic diagram of the main cross-sectional structure of a new energy charging gun capable of efficient cooling proposed by the present invention;

[0030] Figure 4 This is a three-dimensional schematic diagram of the cross-sectional structure of the first cooling box and the second cooling box of a new energy charging gun capable of efficient cooling proposed by the present invention;

[0031] Figure 5 This is a three-dimensional schematic diagram of the multiple heat conducting plates, heat absorbing network pipe, drive motor and blade connection structure of a new energy charging gun with efficient cooling proposed by the present invention;

[0032] Figure 6 This is a three-dimensional schematic diagram of the separation structure of the charging gun shell and protective mesh cover of a new energy charging gun with efficient cooling proposed by the present invention;

[0033] Figure 7 This is a three-dimensional schematic diagram of the multiple plug-in guide rods and cable connection structure of a new energy charging gun that can perform efficient cooling proposed by the present invention.

[0034] In the figure: 1. Charging gun housing; 2. Ring network; 3. Handle; 4. Cable; 41. Low-resistance wire; 5. Support plate; 6. Plug-in rod; 7. First cooling box; 8. Heat exchange elbow; 9. Second cooling box; 10. Heat exchange straight pipe; 11. Heat conduction plate; 12. First heat conduction frame; 13. Heat absorption network pipe; 14. Second heat conduction frame; 15. Heat absorption network plate; 16. Waterproof ring; 17. Heat dissipation frame; 18. Fixed frame; 19. Drive motor; 20. Blade; 21. External thread ring; 22. Internal thread ring; 23. Protective mesh cover; 24. Connection pole; 25. Fixed ring; 26. Plug-in ring; 27. Positioning screw; 28. Pressure rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In one embodiment: refer to Figure 1-7 A charging gun includes a charging gun housing 1 made of high-strength insulating plastic and shaped like a long spear. An externally threaded ring 21 is integrally formed at one opening of the charging gun housing 1 through an injection molding process. An internally threaded ring 22 is also provided. The internally threaded ring 22 is screwed onto the externally threaded ring 21. A protective mesh 23 is welded to one side of the internally threaded ring 22. This mesh 23 protects the heat sink 17, which will be installed later, from foreign matter and damage to the internal components of the charging gun.

[0037] A ring mesh 2 is fixed to the charging gun housing 1 using a mold. It surrounds a specific location on the housing, providing ventilation and preliminary protection. A handle 3 is bolted to the bottom of the housing. The handle 3 features an ergonomic design and a non-slip textured surface for easy grip.

[0038] Install the plug-in mechanism inside the charging gun housing 1. First, bolt a support plate 5 (a rectangular metal plate) into the housing 1. Drill holes at equal intervals in the support plate 5. Then, insert multiple plug-in guide rods 6 through these holes and secure them by welding. One end of the guide rods 6 extends outside the housing 1, allowing them to plug into the charging port on the new energy vehicle.

[0039] Install the power connection assembly at the other end of the multiple plug-in conductive rods 6. Fix the power connection rod 24 to the other end of the plug-in conductive rod 6 by welding to ensure that the power connection rod 24 is electrically connected to the plug-in conductive rod 6. Put multiple power connection rods 24 into the same fixing ring 25, and fix the multiple power connection rods 24 together through the fixing ring 25. Weld the plug ring 26 at one end of the power connection rod 24 to ensure that the power connection rod 24 is electrically connected to the plug ring 26. Drill and tap the inner wall of one side of the plug ring 26, and then thread the positioning screw 27 through it. At the end of the positioning screw 27 located in the plug ring 26, rotate the connecting pressure rod 28 through the bearing.

[0040] Prepare the cable 4, which has multiple low-resistance wires 41 inside. The low-resistance wire 41 is a copper core wire. Insert one end of the low-resistance wire 41 into the corresponding plug ring 26, contacting the pressure rod 28, and then rotate the positioning screw 27. The positioning screw 27 drives the pressure rod 28 to move, and the pressure rod 28 is used to clamp and position the low-resistance wire 41, so that the low-resistance wire 41 is tightly electrically connected to the plug ring 26, thereby achieving electrical connection between the cable 4 and the plug-in mechanism. The other end of the cable 4 passes through the handle 3 and extends to the outside of the handle 3, for electrical connection to the charging pile and powering the plug-in mechanism. When transmitting current, the low-resistance wire 41 can reduce current loss and improve charging efficiency.

[0041] Install the liquid cooling mechanism. On one side of the support plate 5, a first cooling box 7 is fixedly installed by bolts. The first cooling box 7 is a sealed metal box. In the first cooling box 7, multiple heat exchange bends 8 are drilled and installed at equal intervals. The openings at both ends of the heat exchange bends 8 are located on both sides of the first cooling box 7. On the other side of the support plate 5, a second cooling box 9 is fixedly installed by bolts. The second cooling box 9 is also a sealed metal box. In the second cooling box 9, multiple heat exchange straight pipes 10 are drilled and installed at equal intervals. The plug-in conductive rods 6 are respectively passed through the corresponding heat exchange bends 8 and heat exchange straight pipes 10, and the plug-in conductive rods 6 are respectively fixedly connected to the inner walls of the heat exchange bends 8 and heat exchange straight pipes 10 by welding. Cooling liquid is injected into the first cooling box 7 and the second cooling box 9. When the plug-in conductive rods 6 transmit current to generate heat, the heat is transported to the corresponding coolant through the heat exchange bends 8 and the heat exchange straight pipes 10, thereby cooling the plug-in conductive rods 6.

[0042] This application can be used in the field of charging equipment technology, and can also be used in other fields applicable to this application.

[0043] In another embodiment: Figure 3-5Based on the above embodiment, an improvement is provided: a new energy charging gun capable of efficient cooling, which is applied to the field of charging equipment technology. In the first cooling box 7, multiple heat-conducting plates 11 are drilled and fixedly installed at equal intervals through the holes. The heat-conducting plates 11 are metal plates with high thermal conductivity. A first heat-conducting frame 12 located in the first cooling box 7 is fixedly installed on the heat-conducting plates 11 by welding. A common heat-absorbing mesh tube 13 is fixedly installed on one side of the multiple first heat-conducting frames 12 by welding. A common heat dissipation frame 17 located in the charging gun housing 1 is fixedly installed on one side of the multiple heat-conducting plates 11 by welding. The other side of the heat-conducting plates 11 extends into the second cooling box 9. A second heat-conducting frame 14 is fixedly installed on the portion of the heat-conducting plate 11 located in the second cooling box 9 by welding. A heat-absorbing mesh plate 15 is fixedly installed on one side of the second heat-conducting frame 14 by welding. After the coolant in the first cooling box 7 and the second cooling box 9 absorbs heat, the heat-absorbing mesh pipe 13 and the heat-absorbing mesh plate 15 respectively absorb the heat in the coolant, and then transfer the heat to the heat dissipation frame 17 through the first heat-conducting frame 12, the second heat-conducting frame 14 and the heat-conducting plate 11. On one side of the second cooling box 9, a waterproof ring 16 is fixedly installed by welding. One side of the waterproof ring 16 extends to the outside of the charging gun housing 1. When the large plug-in guide rod 6 is plugged into the charging port of the new energy vehicle, it plays a waterproof role and prevents water droplets from falling on the plug-in guide rod 6.

[0044] Install the air cooling mechanism. Prepare a fixing frame 18 and securely connect the fixing frame 18 to the multiple heat conducting plates 11 by welding. On one side of the fixing frame 18, securely install the drive motor 19 with bolts. Securely install the blades 20 on the output shaft of the drive motor 19 by key connection. Start the drive motor 19, which drives the blades 20 to rotate and blow air onto the heat sink 17, dissipating the heat concentrated on the heat sink 17 and lowering the temperature of the heat sink 17. This allows the liquid cooling mechanism to continuously cool the plug-in guide rod 6.

[0045] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 19 are conventional means or common knowledge and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0046] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A new energy charging gun capable of efficient cooling, characterized in that: include: Charging gun housing (1); A plug-in mechanism installed in the charging gun housing (1), one side of the plug-in mechanism extending to the outside of the charging gun housing (1), the plug-in mechanism being used to cooperate with a charging interface on a new energy vehicle to charge a battery in the new energy vehicle; A liquid cooling mechanism is installed in the charging gun housing (1), the plug-in mechanism passes through the liquid cooling mechanism, and the liquid cooling mechanism is used to cool the plug-in mechanism; An air cooling mechanism installed on the liquid cooling mechanism, used to cool the heat output by the liquid cooling mechanism by air, so that the liquid cooling mechanism can continuously cool the plug-in mechanism; a cable (4) electrically connected to the plug-in mechanism, the cable (4) being used to electrically connect to the charging pile and supply power to the plug-in mechanism; The plug-in mechanism comprises a plurality of plug-in conductive rods (6), the liquid cooling mechanism comprises a first cooling box (7) and a second cooling box (9), the plug-in conductive rods (6) pass through the first cooling box (7) and the second cooling box (9) and are fixedly connected to the liquid cooling mechanism, the air cooling mechanism comprises a drive motor (19) and blades (20), the drive motor (19) is used to drive the blades (20) to rotate to dissipate heat, and the cable (4) comprises a plurality of low-resistance wires (41), and the low-resistance wires (41) are used to reduce losses when transmitting current.

2. The new energy charging gun according to claim 1, characterized in that: The plug-in mechanism further comprises a support plate (5) fixedly mounted in the charging gun housing (1), a plurality of plug-in guide rods (6) being fixedly mounted at equal intervals through the support plate (5), one end of the plug-in guide rod (6) extending to the outside of the charging gun housing (1), and the other ends of the plurality of plug-in guide rods (6) being connected to the same power connection assembly, which is electrically connected to the cable (4).

3. The new energy charging gun according to claim 2, characterized in that: The power connection assembly includes a power connection rod (24) fixedly mounted on the other end of the plug-in conductive rod (6), the power connection rod (24) is electrically connected to the plug-in conductive rod (6), a plurality of power connection rods (24) are fixedly sleeved with a same fixing ring (25), one end of the power connection rod (24) is fixedly mounted with a plug-in ring (26), the power connection rod (24) is electrically connected to the plug-in ring (26), a positioning screw (27) is threadedly connected through the inner wall of one side of the plug-in ring (26), one end of the positioning screw (27) located in the plug-in ring (26) is rotatably connected to a pressure rod (28), and the cable (4) is respectively clamped with the plurality of pressure rods (28) to achieve electrical connection.

4. The new energy charging gun according to any one of claims 1 to 3, characterized in that: The liquid cooling mechanism includes a first cooling box (7) fixedly mounted on one side of the support plate (5), a plurality of heat exchange bends (8) being fixedly mounted at equal intervals in the first cooling box (7), a second cooling box (9) being fixedly mounted on the other side of the support plate (5), a plurality of heat exchange straight pipes (10) being fixedly mounted at equal intervals in the second cooling box (9), the plug-in conductive rod (6) respectively passes through the corresponding heat exchange bends (8) and the heat exchange straight pipes (10) and is fixedly connected via a thermal expansion compensation structure, the first cooling box (7) and the second cooling box (9) are both filled with cooling liquid, and the first cooling box (7) and the second cooling box (9) are connected via a fluid pipeline to form a cooling liquid circulation path.

5. The new energy charging gun according to claim 4, characterized in that: A plurality of heat conducting plates (11) are fixedly installed at equal intervals in the first cooling box (7), a first heat conducting frame (12) located in the first cooling box (7) is fixedly installed on the heat conducting plates (11), a same heat absorbing network tube (13) is fixedly installed on one side of the plurality of first heat conducting frames (12), a same heat dissipation frame (17) located in the charging gun housing (1) is fixedly installed on one side of the plurality of heat conducting plates (11), and the air cooling mechanism is respectively connected to the plurality of heat conducting plates (11).

6. The new energy charging gun according to claim 5, characterized in that: The other side of the heat conducting plate (11) extends into the second cooling box (9), and a second heat conducting frame (14) located in the second cooling box (9) is fixedly mounted on the heat conducting plate (11), and a heat absorbing mesh plate (15) is fixedly mounted on one side of the second heat conducting frame (14).

7. The new energy charging gun according to any one of claims 1 to 6, characterized in that: The air cooling mechanism comprises a fixing frame (18) fixedly connected to a plurality of heat conducting plates (11); a driving motor (19) is fixedly mounted on the fixing frame (18) via a vibration damping pad; a blade (20) is fixedly mounted on an output shaft of the driving motor (19); the driving motor (19) is used to drive the blade (20) to rotate so as to blow air toward the heat dissipation frame (17) for heat dissipation.

8. The new energy charging gun according to claim 3, characterized in that: A plurality of low-resistance wires (41) are arranged in the cable (4), and one end of the low-resistance wire (41) extends into the corresponding inserting ring (26) and is clamped with the pressure rod (28).

9. The new energy charging gun according to claim 1, characterized in that: It also includes a waterproof ring (16), which is fixedly mounted on one side of the second cooling box (9) and extends to the outside of the charging gun housing (1), and is used for waterproofing when the plug-in guide rod (6) is matched with the charging interface.

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