Charging gun

Abstract

The utility model relates to a charging device, in particular to a charging gun, which comprises a shell, and a fixing bolt, a fixing bracket, a liquid cooling box and a charging terminal which are arranged in the shell, the charging terminal is provided with a heat dissipation surface, a first through hole is formed in the charging terminal, and the charging terminal is fixedly connected with the shell; the liquid cooling box is provided with a heat conduction surface and a second through hole directly facing the first through hole, and the heat conduction surface and the heat dissipation surface are attached to each other or connected through a heat conduction layer; the fixing support is provided with a threaded hole directly facing the first through hole. The fixing support and the charging terminal are arranged on the two opposite sides of the liquid cooling box. And a fixing bolt sequentially penetrates through the first through hole and the second through hole and is in threaded connection in the threaded hole. According to the utility model, the fixing support, the charging terminal and the liquid cooling box are connected into a whole through the fixing bolts, and the charging terminal is fixed in the shell, so that the liquid cooling box is fixed along with the charging terminal, and the problem of fragmentation of the fragile liquid cooling box is reduced.

Description

Technical Field

[0001] The utility model relates to the field of charging devices, in particular to a charging gun. Background Art

[0002] Electric vehicles are vehicles that use an onboard power source as a driving force, use an electric motor to drive the wheels, and comply with various requirements of road traffic and safety regulations. As their impact on the environment is relatively small compared to traditional vehicles, their prospects are widely optimistic.

[0003] Currently, many manufacturers are adding liquid cooling boxes to the gun head of the charging gun, and use the refrigerant flowing in the liquid cooling box to dissipate the heat of the terminals in the gun head. However, most of the current liquid cooling boxes are made of plastic, metal and other materials, and can be directly fixed in the gun head by bolts, etc. However, there is a lack of research on liquid cooling boxes made of some fragile materials, resulting in a lack of solutions in this field to stably fix liquid cooling boxes made of fragile materials in the gun head. Utility Model Content

[0004] The embodiment of the utility model provides a charging gun to solve the problem in the prior art that a liquid cooling box made of fragile material is not stably fixed in the gun head.

[0005] The utility model provides a charging gun, comprising a housing, and a fixing bolt, a fixing bracket, a liquid cooling box and a charging terminal arranged in the housing;

[0006] The charging terminal has a heat dissipation surface, the charging terminal is provided with a first through hole, and the charging terminal is fixedly connected to the housing;

[0007] The liquid cooling box has a heat-conducting surface, the liquid cooling box is provided with a second through hole facing the first through hole, and the heat-conducting surface and the heat-dissipating surface are attached to each other or connected through a heat-conducting layer;

[0008] The fixing bracket is provided with a threaded hole facing the second through hole, and the fixing bracket and the charging terminal are arranged on opposite sides of the liquid cooling box;

[0009] The fixing bolt passes through the first through hole and the second through hole in sequence and is threadedly connected in the threaded hole.

[0010] Optionally, the first through hole and the second through hole are circular holes, and the first through hole, the second through hole and the threaded hole are coaxial.

[0011] Optionally, the heat-conducting surface and the heat-dissipating surface are spaced apart, and the heat-conducting surface and the heat-dissipating surface are connected via a heat-conducting layer, and the heat-conducting layer is formed by filling a gap between the heat-dissipating surface and the heat-conducting surface with heat-conducting silicone.

[0012] Optionally, the liquid cooling box comprises a liquid inlet, a liquid outlet, a box body and two fixing seats, the box body and the fixing seats are both made of ceramic material, the fixing seats and the box body are both hollow structures, and the inner cavity of the fixing seat is connected to the inner cavity of the box body;

[0013] The two fixing seats are arranged at intervals on the same side surface of the box body, and each of the fixing seats is provided with the second through hole;

[0014] The liquid inlet and the liquid outlet are arranged on the box body.

[0015] Optionally, it also includes a liquid inlet pipe, a liquid outlet pipe, a wire and a cable sheath;

[0016] One end of the wire is electrically connected to the charging terminal, and the other end of the wire is suitable for connecting to a power source, and a plurality of wires are provided;

[0017] One end of the liquid inlet pipe is connected to the liquid inlet end, the other end of the liquid inlet pipe is suitable for connecting to the outlet of the liquid source, one end of the liquid outlet pipe is connected to the liquid outlet end, and one end of the liquid outlet pipe is suitable for connecting to the inlet of the liquid source;

[0018] The liquid inlet pipe, the liquid outlet pipe and the plurality of wires are all arranged in the cable sheath.

[0019] Optionally, the cable sheath includes, from inside to outside, an insulating sheath, a braided sheath, a non-woven fabric sheath and a rubber sheath;

[0020] The liquid inlet pipe, the liquid outlet pipe and the plurality of wires are arranged in the insulating sleeve.

[0021] Optionally, two heat-conducting surfaces are provided, and the two heat-conducting surfaces are provided on opposite sides of the liquid cooling box;

[0022] There are two charging terminals, each of which has a heat dissipation surface. The heat dissipation surface on one charging terminal is attached to one of the heat dissipation surfaces or connected through a heat conductive layer, and the heat dissipation surface on the other charging terminal is attached to the other heat dissipation surface or connected through a heat conductive layer.

[0023] Optionally, the box body includes a first box body, a second box body and a third box body, all of which are hollow, and the inner cavity of the first box body, the inner cavity of the second box body and the inner cavity of the third box body are connected;

[0024] The second box and the third box are arranged at intervals on the same side surface of the first box, one of the fixing seats is arranged on the surface of the second box away from the first box, and the other fixing seat is arranged on the surface of the third box away from the first box;

[0025] The liquid inlet end is arranged on the second box body, and the liquid outlet end is arranged on the third box body.

[0026] Optionally, the fixing bracket includes a first plate, a second plate and a third plate, the first plate is disposed between the second box and the third box, the first plate is attached to the first box, the second plate is attached to a side of the second box close to the third box, and the third plate is attached to a side of the third box close to the second box;

[0027] The opposite two sides of the first plate are connected to the second plate and the third plate respectively.

[0028] Optionally, the shell includes a gun head shell and a gun body shell, the gun head shell and the gun body shell are detachably connected, the gun head shell and the gun body shell form a accommodating cavity, and the fixing bolt, the fixing bracket, the liquid cooling box and the charging terminal are arranged in the accommodating cavity.

[0029] The charging gun provided by the embodiment of the utility model is equipped with a liquid cooling box through a fixed bracket and a charging terminal, and the three are connected by fixing bolts, so that the fixed bracket, the charging terminal and the liquid cooling box are connected as a whole. Since the charging terminal is fixed in the outer shell, the liquid cooling box can also be stably fixed in the outer shell, thereby reducing the probability of cracking, breaking and other problems of the liquid cooling box made of fragile materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is an overall schematic diagram of the charging gun in the first embodiment of the utility model;

[0032] Figure 2 It is a schematic internal perspective view of a gun head shell of a charging gun in the first embodiment of the utility model;

[0033] Figure 3 It is a first cross-sectional schematic diagram of the charging gun in the first embodiment of the utility model after the gun body shell is removed;

[0034] Figure 4 This is a schematic diagram of the internal structure of the charging gun in the first embodiment of the utility model without the gun body;

[0035] Figure 5It is a schematic structural diagram of a liquid cooling box of a charging gun in the first embodiment of the utility model;

[0036] Figure 6 It is a second cross-sectional schematic diagram of the charging gun in the first embodiment of the utility model.

[0037] Description of the drawings: 1. Liquid cooling box; 11. First box body; 12. Second box body; 13. Third box body; 14. Liquid inlet end; 15. Liquid outlet end; 16. Fixed seat; 161. Threaded hole; 17. Second through hole; 18. Heat-conducting surface; 2. Charging terminal; 21. First through hole; 3. Fixed bracket; 31. First plate; 32. Second plate; 33. Third plate; 4. Outer shell; 41. Gun head shell; 42. Gun body shell; 5. Cable sheath; 6. Wire; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 9. Fixing bolt. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "liquid level", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] First embodiment

[0042] The first embodiment of the utility model discloses a charging gun, comprising a housing 4 and fixing bolts 9, a fixing bracket 3, a liquid cooling box 1 and a charging terminal 2 respectively arranged in the housing 4. Specifically, the housing 4 comprises a gun head shell 41 and a gun body shell 42, the gun head shell 41 and the gun body shell 42 are detachably connected, the gun head shell 41 and the gun body shell 42 form a receiving cavity, and the fixing bolts 9, the fixing bracket 3, the liquid cooling box 1 and the charging terminal 2 are arranged in the receiving cavity.

[0043] The charging terminal 2 has a heat dissipation surface, and is provided with a first through hole 21, and the charging terminal 2 is fixedly connected to the housing 4. The liquid cooling box 1 has a heat conduction surface 18, and the first through hole 21 is a circular hole. The liquid cooling box 1 is preset with a second through hole 17 coaxial with the first through hole 21, and the second through hole 17 is also a circular hole. The heat conduction surface 18 and the heat dissipation surface are arranged at intervals and conduct heat through the heat conduction layer. The fixing bracket 3 is provided with a threaded hole 161 coaxial with the first through hole 21, and the fixing bracket 3 and the charging terminal 2 are arranged on opposite sides of the liquid cooling box 1; the fixing bolt 9 passes through the first through hole 21 and the second through hole 17 in sequence and is threadedly connected to the threaded hole 161.

[0044] The liquid cooling box 1 in this embodiment is a ceramic liquid cooling box 1, which is easy to break, and welding, bolting and other operations cannot be performed directly on the surface of the liquid cooling box 1. Therefore, when the liquid cooling box 1 is formed, the second through hole 17 is pre-formed. In this embodiment, the liquid cooling box 1 is clamped by the fixing bracket 3 and the charging terminal 2, and then the fixing bolt 9 is penetrated into the charging terminal 2 and the liquid cooling box 1 and connected to the fixing bracket 3, so that the liquid cooling box 1 is stably fixed on the charging terminal 2. Because the charging terminal 2 will be stably fixed in the shell 4, the liquid cooling box 1 will also be stably in the shell 4.

[0045] In this embodiment, the heat conductive layer is formed by filling the gap between the heat dissipation surface and the heat conductive surface 18 with thermal conductive silicone grease. Thermal conductive silicone grease can be applied to the heat dissipation surface or the heat conductive surface 18 in advance, and then the liquid cooling box 1 and the charging terminal 2 are slightly squeezed to fit the charging terminal 2 and the liquid cooling box 1 as closely as possible. Due to the limitation of machining accuracy, the gap between the charging terminal 2 and the liquid cooling box 1 due to machining tolerance occurs. The function of the heat conductive layer in this embodiment is mainly to fill the gap between the charging terminal 2 and the liquid cooling box 1 to improve the heat dissipation efficiency.

[0046] In this embodiment, the liquid cooling box 1 includes a liquid inlet 14, a liquid outlet 15, a box body and two fixing seats 16. The fixing seats 16 and the box body are both hollow structures, wherein the inner cavity of the fixing seat 16 is connected to the inner cavity of the box body, and the fixing seat and the box body are both made of ceramic. The two fixing seats 16 are arranged at intervals on the same side surface of the box body, and each fixing seat 16 is provided with a second through hole 17. The liquid inlet 14 and the liquid outlet 15 are arranged on the box body.

[0047] The charging gun also includes a liquid inlet pipe 7, a liquid outlet pipe 8, a wire 6 and a cable sheath 5. One end of the wire 6 is electrically connected to the charging terminal 2, and the other end of the wire 6 is used to connect to the power supply. There are multiple wires 6. One end of the liquid inlet pipe 7 is connected to the liquid inlet end 14, and the other end of the liquid inlet pipe 7 is connected to the liquid source. One end of the liquid outlet pipe 8 is connected to the liquid outlet end 15, and one end of the liquid outlet pipe 8 is connected to the liquid source. The liquid inlet pipe 7, the liquid outlet pipe 8 and the multiple wires 6 are all arranged in the cable sheath 5.

[0048] In this embodiment, the liquid inlet end 14 and the liquid outlet end 15 adopt pagoda connectors, so that the liquid inlet pipe 7 and the liquid outlet pipe 8 can be quickly connected to the box. The cable sheath 5 can protect the cable.

[0049] Specifically, the cable sheath 5 includes a coaxially arranged insulating sleeve, a braided sleeve, a non-woven fabric sleeve and a rubber sleeve from the inside to the outside; the liquid inlet pipe 7, the liquid outlet pipe 8 and a plurality of wires 6 are arranged in the insulating sleeve.

[0050] In this embodiment, there are two charging terminals 2, so there are two heat-conducting surfaces 18 on the liquid cooling box 1, and the two heat-conducting surfaces 18 are arranged on opposite sides of the liquid cooling box 1; each charging terminal 2 has a heat dissipation surface, the heat dissipation surface on one charging terminal 2 is opposite to one of the heat-conducting surfaces, and the heat dissipation surface on the other charging terminal 2 is opposite to the other heat-conducting surface.

[0051] The box in this embodiment includes a first box 11, a second box 12 and a third box 13, all of which are hollow. The inner cavity of the first box 11, the inner cavity of the second box 12 and the inner cavity of the third box 13 are connected. The second box 12 and the third box 13 are arranged at intervals on the same side surface of the first box 11, one of the fixing seats 16 is arranged on the surface of the second box 12 away from the first box 11, and the other fixing seat 16 is arranged on the surface of the third box 13 away from the first box 11. The volume of the fixing seat 16 in this embodiment is smaller than that of the first box 11 and the second box 12, so as to reduce the inner cavity occupied by the fixing seat 16 of the housing 4. The liquid inlet 14 is arranged on the second box 12, and the liquid outlet 15 is arranged on the third box 13.

[0052] Corresponding to the box body, the fixed bracket 3 in this embodiment includes a first plate 31 arranged between the second box body 12 and the third box body 13, a second plate 32 arranged between the second box body 12 and the third box body 13, and a third plate 33 arranged between the second box body 12 and the third box body 13. The first plate 31 is attached to the first box body 11, the second plate 32 is attached to a side of the second box body 12 close to the third box body 13, and the third plate 33 is attached to a side of the third box body 13 close to the second box body 12; the opposite side edges of the first plate 31 are respectively connected to the second plate 32 and the third plate 33.

[0053] In other words, the fixing bracket 3 in this embodiment is C-shaped, and is formed by bending the second plate 32 and the third plate 33 on both sides of the first plate 31 toward the same direction.

[0054] In this embodiment, the shell 4 includes a gun head shell 41 and a gun body shell 42, which are detachably connected, and the gun head shell 41 and the gun body shell 42 form a receiving cavity, and the fixing bolt 9, the fixing bracket 3, the liquid cooling box 1 and the charging terminal 2 are arranged in the receiving cavity.

[0055] The wire 6 , the liquid inlet pipe 7 , the liquid outlet pipe 8 and the cable sheath 5 covering the three pass through the gun body shell 42 .

[0056] Second embodiment

[0057] The difference between this embodiment and the first embodiment is that the liquid cooling box in this embodiment is in the shape of a rectangular parallelepiped, the two charging terminals are respectively attached to the two opposite side surfaces of the liquid cooling box, and the fixing seat is installed on the other surface.

[0058] Third embodiment

[0059] The difference between this embodiment and the first embodiment is that this embodiment does not include a heat-conducting layer, and the heat dissipation surface and the heat-conducting surface in this embodiment are directly bonded.

[0060] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A charging gun, characterized in that: It includes a housing, and fixing bolts, a fixing bracket, a liquid cooling box and a charging terminal arranged in the housing; The charging terminal has a heat dissipation surface, the charging terminal is provided with a first through hole, and the charging terminal is fixedly connected to the housing; The liquid cooling box has a heat-conducting surface, the liquid cooling box is provided with a second through hole facing the first through hole, and the heat-conducting surface and the heat-dissipating surface are attached to each other or connected through a heat-conducting layer; The fixing bracket is provided with a threaded hole facing the second through hole, and the fixing bracket and the charging terminal are arranged on opposite sides of the liquid cooling box; The fixing bolt passes through the first through hole and the second through hole in sequence and is threadedly connected in the threaded hole.

2. The charging gun according to claim 1, characterized in that: The first through hole and the second through hole are circular holes, and the first through hole, the second through hole and the threaded hole are coaxial.

3. The charging gun according to claim 1, characterized in that: The heat-conducting surface and the heat-dissipating surface are arranged at intervals, and the heat-conducting surface and the heat-dissipating surface are connected through a heat-conducting layer, and the heat-conducting layer is formed by filling the gap between the heat-dissipating surface and the heat-conducting surface with heat-conducting silica gel.

4. The charging gun according to claim 1, characterized in that: The liquid cooling box comprises a liquid inlet, a liquid outlet, a box body and two fixing seats, the box body and the fixing seats are both made of ceramic material, the fixing seats and the box body are both hollow structures, and the inner cavity of the fixing seat is connected to the inner cavity of the box body; The two fixing seats are arranged at intervals on the same side surface of the box body, and each of the fixing seats is provided with the second through hole; The liquid inlet and the liquid outlet are arranged on the box body.

5. The charging gun according to claim 4, characterized in that: It also includes a liquid inlet pipe, a liquid outlet pipe, a wire and a cable sheath; One end of the wire is electrically connected to the charging terminal, and the other end of the wire is suitable for connecting to a power source, and a plurality of wires are provided; One end of the liquid inlet pipe is connected to the liquid inlet end, the other end of the liquid inlet pipe is suitable for connecting to the outlet of the liquid source, one end of the liquid outlet pipe is connected to the liquid outlet end, and one end of the liquid outlet pipe is suitable for connecting to the inlet of the liquid source; The liquid inlet pipe, the liquid outlet pipe and the plurality of wires are all arranged in the cable sheath.

6. The charging gun according to claim 5, characterized in that: The cable sheath includes, from inside to outside, an insulating sheath, a braided sheath, a non-woven fabric sheath and a rubber sheath; The liquid inlet pipe, the liquid outlet pipe and the plurality of wires are arranged in the insulating sleeve.

7. The charging gun according to claim 1, characterized in that: There are two heat-conducting surfaces, and the two heat-conducting surfaces are arranged on two opposite sides of the liquid cooling box; There are two charging terminals, each of which has a heat dissipation surface. The heat dissipation surface on one charging terminal is attached to one of the heat dissipation surfaces or connected through a heat conductive layer, and the heat dissipation surface on the other charging terminal is attached to the other heat dissipation surface or connected through a heat conductive layer.

8. The charging gun according to claim 4, characterized in that: The box body comprises a first box body, a second box body and a third box body, all of which are hollow, and the inner cavity of the first box body, the inner cavity of the second box body and the inner cavity of the third box body are connected; The second box and the third box are arranged at intervals on the same side surface of the first box, one of the fixing seats is arranged on the surface of the second box away from the first box, and the other fixing seat is arranged on the surface of the third box away from the first box; The liquid inlet end is arranged on the second box body, and the liquid outlet end is arranged on the third box body.

9. The charging gun according to claim 8, characterized in that: The fixing bracket includes a first plate, a second plate and a third plate, wherein the first plate is disposed between the second box and the third box, the first plate is attached to the first box, the second plate is attached to a side of the second box close to the third box, and the third plate is attached to a side of the third box close to the second box; The opposite two sides of the first plate are connected to the second plate and the third plate respectively.

10. The charging gun according to claim 1, characterized in that: The shell includes a gun head shell and a gun body shell, the gun head shell and the gun body shell are detachably connected, the gun head shell and the gun body shell form a receiving cavity, and the fixing bolt, the fixing bracket, the liquid cooling box and the charging terminal are arranged in the receiving cavity.

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