Charging gun with rapid heat dissipation PCB

Abstract

The utility model relates to the technical field of charging equipment, in particular to a charging gun with a rapid heat dissipation PCB, which comprises a charging gun and a control box connected with the charging gun through a cable, the control box is internally provided with a PCB, the bottom of the PCB is connected with a heat conducting plate, a plurality of openings are arranged in the control box and positioned below the heat conducting plate, and the heat conducting plate is connected with the PCB. A second sealing ring is arranged in the opening, and a heat dissipation layer is arranged at the bottom of the control box. Heat of the PCB is transmitted to the refrigeration wafer through the heat conduction plate and the heat transfer sheet, the refrigeration wafer transmits the heat to the heat dissipation fins to dissipate the heat into the air, the fan can drive the air to flow to cool the heat dissipation fins, and the large area of the heat conduction plate increases the heat conduction efficiency, so that the cooling speed is higher; meanwhile, the heat dissipation assembly and the PCB are separated, the PCB is sealed through the first sealing ring and the second sealing ring, and the waterproof and dustproof effects can be achieved while heat dissipation is conducted on the PCB.

Description

Technical Field

[0001] The utility model relates to the technical field of charging equipment, in particular to a charging gun with a fast heat dissipation PCB. Background Art

[0002] Electric vehicles (BEV) are vehicles that use battery packs as power sources and use motors to drive wheels. Due to their low impact on the environment, the prospects of electric vehicles are generally optimistic. In recent years, the popularity of electric vehicles has gradually increased, and with it comes the issue of how to provide timely and efficient charging services for electric vehicles. Charging piles, as a device that specifically provides charging services for electric vehicles and other products, have received widespread attention and recognition since their launch. With the continuous expansion of the market for electric vehicles such as pure electric vehicles and hybrid electric vehicles, the demand for charging guns is also growing.

[0003] In the prior art, when the charging gun is connected to an electric vehicle for charging, it is necessary to insert the gun head of the charging gun into the charging port of the electric vehicle so that the plug-in terminal in the gun head is connected to the docking terminal of the electric vehicle to achieve charging. However, during the charging process, the PCB board connected to the gun head of the charging gun will generate heat, posing certain charging safety risks. The PCB boards connected to the charging guns on the market currently mainly use natural heat dissipation, but with the continuous development of new energy vehicle technology, this natural heat dissipation method can no longer meet actual needs. Therefore, it is urgent to solve the heat dissipation problem of the charging gun. Utility Model Content

[0004] The purpose of the utility model is to provide a charging gun with a fast heat dissipation PCB, so as to solve the problem that during the charging process of the charging gun proposed in the above background technology, the PCB board connected to the gun head of the charging gun will generate heat, there are certain charging safety risks, and the natural heat dissipation method cannot meet the actual needs.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a charging gun with a fast heat dissipation PCB, including a charging gun, and a control box connected to the charging gun through a cable, a PCB board is arranged inside the control box, a heat conducting plate is connected to the bottom of the PCB board, a plurality of openings are opened inside the control box below the heat conducting plate, a sealing ring 2 is arranged inside the opening, a heat dissipation layer is arranged at the bottom of the control box, a plurality of heat transfer plates are arranged at the bottom of the heat conducting plate, the heat transfer plates penetrate the sealing ring 2 and extend to the heat dissipation layer, a fixing seat 1 is connected to one side of the heat transfer plate inside the heat dissipation layer, a fixing seat 1 is connected to one side of the fixing seat 1 by bolts, a cooling chip is arranged between the fixing seat 1 and the fixing seat 2, a plurality of heat dissipation fins are arranged on one side of the fixing seat 2, and a fan is arranged on the side wall of the fixing seat 2 between the heat dissipation fins.

[0006] The utility model is further configured that the top of the control box is fixedly connected with a top cover by bolts, a plurality of fixing rods are arranged at the bottom of the top cover, and a plurality of fixing holes are opened through the surface of the PCB board.

[0007] The utility model is further configured that the lower end of the fixing rod penetrates the fixing hole and is slidably connected to the fixing hole, and a sealing groove is opened at the bottom of the top cover.

[0008] The utility model is further configured that a sealing groove 2 is provided on the top of the control box just below the sealing groove 1, and only a sealing ring 1 is provided between the sealing groove 1 and the sealing groove 2.

[0009] The utility model is further configured that a fixing block 1 is arranged at the inner bottom of the control box near both ends, and a fixing block 2 is connected to the top of the fixing block 1 by bolts.

[0010] The utility model is further configured that the bottom of the heat dissipation layer is fixedly connected to a bottom plate by bolts, and a plurality of rubber pads are arranged at the bottom of the bottom plate.

[0011] The utility model is further configured that the side wall of the bottom plate is provided with an opening, and a ventilation grille 1 is provided inside the opening, and openings are symmetrically provided on any two sides of the heat dissipation layer, and a ventilation grille 2 is provided inside the opening.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model has the following beneficial effects on a charging gun with a fast heat dissipation PCB:

[0014] Heat is transferred by setting a heat conducting plate under the PCB board. The heat conducting plate transfers the heat of the PCB board to the cooling chip between the fixing seat 1 and the fixing seat 2 through the heat transfer plate. The cooling chip transfers the heat to the heat dissipation fins through the heat release surface and dissipates the heat into the air. The fan drives the air flow to cool the heat dissipation fins, and the large area of ​​the heat conducting plate increases the heat conduction efficiency and makes the cooling faster.

[0015] At the same time, the heat dissipation component is separated from the PCB board, and then the PCB board is sealed by the sealing ring 1 and the sealing ring 2, which can not only dissipate the heat for the PCB board but also achieve the effect of waterproof and dustproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 This is a three-dimensional structural diagram of a charging gun with a fast heat dissipation PCB according to an embodiment of the utility model;

[0018] Figure 2 This is a charging gun with a fast heat dissipation PCB according to the embodiment of the utility model. Figure 1 Sectional view at point A;

[0019] Figure 3 This is a charging gun with a fast heat dissipation PCB according to the embodiment of the utility model. Figure 1 Top view of the explosion at A in the middle;

[0020] Figure 4 This is a charging gun with a fast heat dissipation PCB according to the embodiment of the utility model. Figure 1 Exploded bottom view at point A in the middle.

[0021] The markings in the figure are: 1. Charging gun; 2. Control box; 3. Top cover; 4. Sealing groove 1; 5. Sealing ring 1; 6. Fixing rod; 7. Fixing block 1; 8. Fixing block 2; 9. Heat dissipation layer; 10. PCB board; 11. Fixing hole; 12. Sealing ring 2; 13. Heat conducting plate; 14. Heat transfer plate; 15. Fixing seat 1; 16. Refrigeration chip; 17. Fixing seat 2; 18. Heat dissipation fins; 19. Fan; 20. Bottom plate; 21. Rubber pad; 22. Ventilation grille 1; 23. Ventilation grille 2. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the following will be combined with the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0023] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements.

[0024] See also Figure 1 , 2 and Figure 3 , 4 A charging gun with a fast heat dissipation PCB comprises a charging gun 1 and a control box 2 connected to the charging gun 1 through a cable, a PCB board 10 is arranged inside the control box 2, a heat conducting plate 13 is connected to the bottom of the PCB board 10, a plurality of openings are opened inside the control box 2 below the heat conducting plate 13, a sealing ring 2 is arranged inside the opening, a heat dissipation layer 9 is arranged at the bottom of the control box 2, a plurality of heat transfer sheets 14 are arranged at the bottom of the heat conducting plate 13, the heat transfer sheets 14 penetrate the sealing ring 2 12 and extend to the heat dissipation layer 9, a fixing seat 15 is connected to one side of the heat transfer sheet 14 located inside the heat dissipation layer 9, a fixing seat 17 is connected to one side of the fixing seat 15 by bolts, a cooling chip 16 is arranged between the fixing seat 15 and the fixing seat 2 17, a plurality of heat dissipation fins 18 are arranged on one side of the fixing seat 2 17, and a fan 19 is arranged on the side wall of the fixing seat 2 17 between the heat dissipation fins 18.

[0025] By adopting the above technical solution, a heat conducting plate 13 is arranged under the PCB board 10 to transfer heat. The heat conducting plate 13 will transfer the heat of the PCB board 10 to the fixing seat 15 through the heat transfer plate 14. The heat absorption surface of the cooling chip 16 between the fixing seat 15 and the fixing seat 2 17 will absorb the transferred heat, and then transfer the heat to the heat dissipation fins 18 on one side of the fixing seat 2 17 through the heat release surface. The heat dissipation fins 18 will dissipate the heat into the air, and the fan 19 will drive the air flow to cool the heat dissipation fins 18.

[0026] The top of the control box 2 is fixedly connected to the top cover 3 by bolts, and a plurality of fixing rods 6 are arranged at the bottom of the top cover 3. A plurality of fixing holes 11 are penetrated through the surface of the PCB board 10, and the lower ends of the fixing rods 6 penetrate the fixing holes 11 and are slidably connected. A sealing groove 14 is arranged at the bottom of the top cover 3, and a sealing groove 2 is arranged at the top of the control box 2 just below the sealing groove 14, and only a sealing ring 15 is arranged between the sealing groove 14 and the sealing groove 2. A fixing block 17 is arranged at the inner bottom of the control box 2 near both ends, and the top of the fixing block 7 is connected to a fixing block 2 8 by bolts.

[0027] By adopting the above technical solution, a sealing ring 5 is provided between the top cover 3 and the control box 2 to ensure the sealing of the control box 2, so as to prevent water from entering the inside and causing damage to the PCB board 10. The lower end of the fixing rod 6 under the top cover 3 is used to be inserted into the fixing hole 11 of the PCB board 10 to fix the PCB board 10 to prevent shaking.

[0028] The bottom of the heat dissipation layer 9 is fixedly connected to a bottom plate 20 by bolts, a plurality of rubber pads 21 are arranged at the bottom of the bottom plate 20, an opening is opened on the side wall of the bottom plate 20, and a ventilation grille 1 22 is arranged inside the opening, and openings are symmetrically opened on any two sides of the heat dissipation layer 9, and a ventilation grille 2 23 is arranged inside the opening.

[0029] By adopting the above technical solution, the ventilation grille 1 22 of the bottom plate 20 and the ventilation grille 2 23 of the heat dissipation layer 9 are used to ensure air circulation inside the heat dissipation layer 9, and the rubber pad 21 is used to lift the control box 2 to ensure air circulation at the bottom.

[0030] The working principle of the utility model is that during the charging process of the charging gun 1, the PCB board 10 connected to the gun head of the charging gun 1 will generate heat, which poses certain charging safety risks. The natural heat dissipation method cannot meet the actual needs. A heat conducting plate 13 is arranged under the PCB board 10 to transfer heat. The heat conducting plate 13 will transfer the heat of the PCB board 10 to the fixing seat 1 15 through the heat transfer plate 14. The heat absorption surface of the cooling chip 16 between the fixing seat 15 and the fixing seat 2 17 will absorb the transferred heat, and then transfer the heat to the heat dissipation fins 18 on one side of the fixing seat 2 17 through the heat release surface. The heat dissipation fins 18 will dissipate the heat into the air, and the fan 19 will drive the air flow to cool the heat dissipation fins 18. The large area of ​​the heat conducting plate 13 increases the heat conduction efficiency and makes the cooling faster.

[0031] A sealing ring 15 is provided between the top cover 3 and the control box 2 to ensure the sealing of the control box 2 so as to prevent water from entering the inside and causing damage to the PCB board 10. A sealing ring 212 is provided at the position where the heat transfer sheet 14 is installed between the control box 2 and the heat dissipation layer 9, which is also used to ensure the sealing of the control box 2, and can achieve the function of waterproof and dustproof. The fixing block 17 and the fixing block 28 are used to fix the cables. The lower end of the fixing rod 6 under the top cover 3 is used to be inserted into the fixing hole 11 of the PCB board 10 to fix the PCB board 10 to prevent shaking. The ventilation grille 122 of the bottom plate 20 and the ventilation grille 23 of the heat dissipation layer 9 are used to ensure air circulation inside the heat dissipation layer 9.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0033] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A charging gun with a fast heat dissipation PCB, comprising a charging gun (1), and a control box (2) connected to the charging gun (1) via a cable, characterized in that: A PCB board (10) is arranged inside the control box (2), and a heat conducting plate (13) is connected to the bottom of the PCB board (10); The control box (2) has a plurality of openings located below the heat conducting plate (13), a second sealing ring (12) is provided inside the opening, a heat dissipation layer (9) is provided at the bottom of the control box (2), a plurality of heat transfer sheets (14) are provided at the bottom of the heat conducting plate (13), and the heat transfer sheets (14) penetrate the second sealing ring (12) and extend to the heat dissipation layer (9); The heat transfer plate (14) is connected to a fixing seat 1 (15) on one side located inside the heat dissipation layer (9); a fixing seat 2 (17) is connected to a fixing seat 1 (15) on one side via bolts; a cooling chip (16) is arranged between the fixing seat 1 (15) and the fixing seat 2 (17); a plurality of heat dissipation fins (18) are arranged on one side of the fixing seat 2 (17); and a fan (19) is arranged on the side wall of the fixing seat 2 (17) between the heat dissipation fins (18).

2. A charging gun with a fast heat dissipation PCB according to claim 1, characterized in that: The top of the control box (2) is fixedly connected to a top cover (3) by means of bolts, a plurality of fixing rods (6) are arranged at the bottom of the top cover (3), and a plurality of fixing holes (11) are formed through the surface of the PCB board (10).

3. A charging gun with a fast heat dissipation PCB according to claim 2, characterized in that: The lower end of the fixing rod (6) penetrates the fixing hole (11) and is slidably connected to the fixing hole (11), and a sealing groove (4) is provided at the bottom of the top cover (3).

4. The charging gun with a fast heat dissipation PCB according to claim 3, characterized in that: The control box (2) has a second sealing groove at the top located directly below the first sealing groove (4), and only a first sealing ring (5) is provided between the first sealing groove (4) and the second sealing groove.

5. The charging gun with a fast heat dissipation PCB according to claim 1, characterized in that: A fixing block 1 (7) is arranged at the inner bottom of the control box (2) near both ends, and a fixing block 2 (8) is connected to the top of the fixing block 1 (7) via bolts.

6. The charging gun with a fast heat dissipation PCB according to claim 1, characterized in that: The bottom of the heat dissipation layer (9) is fixedly connected to a bottom plate (20) via bolts, and a plurality of rubber pads (21) are arranged at the bottom of the bottom plate (20).

7. The charging gun with a fast heat dissipation PCB according to claim 6, characterized in that: The side wall of the bottom plate (20) is provided with an opening, and a ventilation grille (22) is arranged inside the opening; openings are symmetrically provided on any two sides of the heat dissipation layer (9), and a ventilation grille (23) is arranged inside the opening.

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