Center liquid-passing oil-cooling type charging gun plug

Abstract

The utility model discloses a central liquid oil cooling type charging gun plug, which comprises at least one plug body and a central liquid oil cooling structure, the plug body comprises a plugging end part, a plugging middle part and a plugging installation part which are connected in sequence, the size of the plugging installation part is larger than that of the plugging middle part, the size of the plugging middle part is larger than that of the plugging end part, and the plugging end part is connected with the central liquid oil cooling structure. An oil passing groove is formed in the plugging middle part and extends into the plugging end part, a cable welding head is arranged on one side, far away from the plugging end part, of the plugging mounting part and is used for welding a cable, and the central liquid passing oil cooling structure is arranged in the plugging mounting part and is connected with the oil passing groove; the central liquid-passing oil-cooling structure is used for forming a liquid-cooling oil loop with the oil-passing groove so as to cool the plug body. The utility model has the advantages that liquid oil can be cooled in the center of the plug, the plug can be used for cooling, the safety is high, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of charging guns, and in particular relates to a central liquid-cooled oil-type charging gun plug. Background Art

[0002] Battery electric vehicles (BEV) refer to vehicles that use onboard power as power, use motors to drive wheels, and meet the requirements of road traffic and safety regulations. Because of its relatively small impact on the environment compared to traditional vehicles, its prospects are widely optimistic. Electric vehicles need to charge the onboard power supply through charging equipment to meet the power input requirements, so charging equipment such as charging guns for charging electric vehicles is crucial. The charging gun will generate a lot of heat during operation, and overheating will affect the operation of the charging equipment. The existing high-power DC charging gun, because the liquid cooling is through the surface of the tail of the plug, the heat taken away is limited, and the temperature at the plug is high. During the long-term plug-in and unplug process, the heat generation will also increase due to the increase in contact resistance. The temperature rises, which has a certain impact on the safety of the product. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a central liquid-cooled oil type charging gun plug which passes liquid-cooled oil through the center of the plug and can be used for cooling.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] Center-through liquid-cooled oil-type charging gun plug, including:

[0006] At least one plug body, the plug body comprising a plug end, a plug middle part and a plug mounting part connected in sequence, the plug mounting part having a size larger than that of the plug middle part, the plug middle part having a size larger than that of the plug end, the plug middle part having an oil groove extending into the plug end, the plug mounting part having a cable welding head on a side away from the plug end, the cable welding head being used for welding cables; and

[0007] The central liquid-cooled oil cooling structure is arranged in the plug-in mounting portion and connected to the oil-cooling groove. The central liquid-cooled oil cooling structure is used to form a liquid-cooled oil circuit with the oil-cooling groove to cool the plug body.

[0008] Preferably, the central liquid-cooled oil cooling structure includes a liquid-cooled oil inlet pipe, a liquid-cooled oil return pipe, a heat sink and an isolation plate. A mounting groove is provided in the plug-in mounting portion, the mounting groove is communicated with the oil flow groove, the isolation plate includes a first end of the isolation plate and a second end of the isolation plate, the size of the first end of the isolation plate is smaller than the size of the second end of the isolation plate, the heat sink is installed in the mounting groove and the middle upper side and the middle lower side of the heat sink are correspondingly provided with a first card slot and a second card slot, the isolation plate is inserted into the heat sink and the upper side and the lower side of the second end of the isolation plate are respectively clamped in the first card slot and the second card slot, the second end of the isolation plate extends into the oil flow groove in the middle of the plug-in, the isolation plate divides the heat sink into a left chamber and a right chamber on the left and right, the liquid-cooled oil inlet pipe and the liquid-cooled oil return pipe are respectively connected to the left chamber or the right chamber, and the liquid-cooled oil inlet pipe and the liquid-cooled oil return pipe are not connected to the left chamber or the right chamber at the same time.

[0009] Preferably, a thermostat mounting hole is provided at a lower portion of a side of the plug-in mounting portion away from the plug-in end, and a thermostat is installed in the thermostat mounting hole.

[0010] Preferably, a plug fixing plastic part is sleeved on the plug-in mounting portion.

[0011] Preferably, sealing rings are provided at the connections between the liquid cooling oil inlet pipe and the liquid cooling oil return pipe and the left chamber or the right chamber.

[0012] Preferably, a plurality of heat dissipation baffles are respectively provided on the left and right sides of the heat dissipation fin.

[0013] By adopting the above technical solution, the utility model has the following beneficial effects:

[0014] The utility model is provided with a plug body, a liquid cooling oil inlet pipe, a liquid cooling oil return pipe, a heat sink, a spacer and other parts, which can form a liquid cooling oil circuit when used. The liquid cooling oil can directly flow through the plug-in end and the plug-in middle of the plug body, so that the heat can be quickly flowed away to ensure that the plug body is used at a lower temperature, thereby ensuring the long-term safe use of the plug, high safety and long service life;

[0015] In summary, the utility model has the advantages of being able to pass liquid cooling oil through the center of the plug, being able to be used at a lower temperature, being highly safe, and having a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 yes Figure 1 Exploded diagram of

[0018] Figure 3 It is a structural schematic diagram of the plug body of the utility model;

[0019] Figure 4 yes Figure 3 Schematic diagram of the structure in another direction;

[0020] Figure 5 It is a structural schematic diagram of the heat sink of the utility model. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0023] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] 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.

[0026] Example 1

[0027] In this embodiment, the utility model proposes a central liquid-cooled oil charging gun plug in which liquid-cooling oil can flow directly inside the plug, thereby achieving cooling, thereby ensuring the operating temperature of the plug, making it safer to use and having a longer service life.

[0028] like Figure 1-5 As shown, in one embodiment of the utility model, the central liquid-cooled oil-type charging gun plug of the utility model includes at least one plug body and a central liquid-cooled oil cooling structure, wherein the plug body includes a plug-in end 1, a plug-in middle part 2 and a plug-in mounting part 3 connected in sequence, the size of the plug-in mounting part 3 is larger than the size of the plug-in middle part 2, the size of the plug-in middle part 2 is larger than the size of the plug-in end 1, the plug-in middle part 2 is provided with an oil groove 4, the oil groove 4 extends into the plug-in end 1, and a cable welding head 5 is provided on the side of the plug-in mounting part 3 away from the plug-in end 1, and the cable welding head 5 is used to weld the cable. It can be understood that the utility model includes at least one plug body, and the plug body can be set according to needs. Generally, the number of plug bodies is two, and the corresponding central liquid-cooled oil cooling structure is equal to the number of plug bodies and is set one by one. Specifically, Figure 1 In the embodiment, the plug body includes a plug end portion 1, a plug middle portion 2 and a plug installation portion 3 from back to front, and the sizes are successively larger. Figure 1 In the figure, the plug-in end 1 and the plug-in middle part 2 are similar to cylindrical structures, while the plug-in mounting part 3 is a rectangular parallelepiped structure as a whole. The oil groove 4 is a groove structure for passing liquid cooling oil as the name implies. The oil groove 4 is arranged in the plug-in middle part 2 and extends forward to the middle and rear position of the plug-in end 1, and the front side of the oil groove 4 is a conical structure. The cable welding head 5 of the utility model is a copper cable welding head mainly used for welding copper cables and charging, etc. The central liquid cooling oil cooling structure of the utility model is specifically arranged in the plug-in mounting part 3 and connected to the oil groove 4. The central liquid cooling oil cooling structure is used to form a liquid cooling oil circuit with the oil groove 4 to cool the plug body, and a thermostat mounting hole 6 is provided at the lower part of the side of the plug-in mounting part 3 away from the plug-in end 1. A thermostat 7 is installed in the thermostat mounting hole 6. The thermostat 7 is used to detect the temperature of the liquid cooling oil and assist in adjusting the temperature.

[0029] Please continue to refer to Figure 1-5The central liquid-cooled oil cooling structure of the utility model comprises a liquid-cooled oil inlet pipe 8, a liquid-cooled oil return pipe 9, a heat sink 10 and a spacer 11. A mounting groove 12 is provided in the plug-in mounting portion 3, and the mounting groove 12 is communicated with the oil-passing groove 4. The spacer 11 comprises a first end of the spacer 11 and a second end of the spacer 11. The size of the first end of the spacer 11 is smaller than the size of the second end of the spacer 11. The heat sink 10 is installed in the mounting groove 12 and the middle upper side and the middle lower side of the heat sink 10 are correspondingly provided with a first card groove 13 and a second card groove 14. A plurality of heat dissipation partitions are respectively provided on the left and right sides of the heat sink 10. The spacer 11 is inserted into the heat sink 10 and the upper and lower sides of the second end of the spacer 11 are respectively snapped into the first card groove 13 and the second card groove 14. The second end of the spacer 11 extends into the oil-passing groove 4 of the plug-in middle portion 2. The spacer 11 divides the heat sink 10 into left and right parts. The left chamber 15 and the right chamber 16, the liquid cooling oil inlet pipe 8 and the liquid cooling oil return pipe 9 are respectively connected to the left chamber 15 or the right chamber 16, and the liquid cooling oil inlet pipe 8 and the liquid cooling oil return pipe 9 are not connected to the left chamber 15 or the right chamber 16 at the same time, that is, when the liquid cooling oil inlet pipe 8 is connected to the left chamber 15, the liquid cooling oil return pipe 9 is connected to the right chamber 16, and when the liquid cooling oil inlet pipe 8 is connected to the right chamber 16, the liquid cooling oil return pipe 9 is connected to the left chamber 15. The liquid cooling oil inlet pipe 8 and the liquid cooling oil return pipe 9 are specifically connected to the left chamber 15 or the right chamber 16 through a connector. They can be selected according to needs during specific use. Users of the utility model can set them according to their own needs. Sealing rings are provided at the connections between the liquid cooling oil inlet pipe 8 and the liquid cooling oil return pipe 9 and the left chamber 15 or the right chamber 16. The sealing rings can ensure sealing and prevent oil leakage from the intake.

[0030] The overall structure of the plug-in mounting portion 3 of the utility model is similar to a rectangular parallelepiped structure, and the vertical cross-section of the mounting groove 12 is similar to an ellipse. Correspondingly, the vertical cross-section of the heat sink 10 is also similar to an ellipse, and the middle upper side and the middle lower side of the heat sink 10 are correspondingly provided with a first card slot 13 and a second card slot 14. A plurality of heat dissipation baffles 17 are respectively provided on the left and right sides of the heat sink 10. After the isolation sheet 11 is connected to the first card slot 13 and the second card slot 14 to divide the interior of the heat sink 10 into a left chamber 15 and a right chamber 16, the provision of a plurality of heat dissipation baffles 17 is also conducive to the subsequent increase in the fluidity of the liquid cooling oil. The heat sink 10 can be made of a material with good heat dissipation properties. After the interior of the heat sink 10 is divided into a left chamber 15 and a right chamber 16, it is also convenient to further form two inlet and outlet routes. It can be understood that the rear side of the isolation plate 11 is the first end of the isolation plate 11, and the front side of the isolation plate 11 is the second end of the isolation plate 11. The second end of the isolation plate 11 extends forward from the first slot 13 and the second slot 14. The first end of the isolation plate 11 extends backward into the oil groove 4 and also divides the oil groove 4 into two left and right parts. However, a distance is set between the rearmost side of the first end of the isolation plate 11 and the rear wall of the oil groove 4 to facilitate the flow of liquid cooling oil.

[0031] During specific use, the liquid cooling oil enters the left chamber 15 (or the right chamber 16) from the liquid cooling oil inlet pipe 8, then passes through the oil groove 4 and then passes through the right chamber 16 (or the left chamber 15), so that it can exchange heat with the plug body in time, thereby ensuring the service life of the plug. Specifically in the utility model, two plug bodies can be provided, so that the plug-in mounting part 3 is provided with a plug fixing plastic part 18 for fixing. The utility model as a whole can also be coordinated with other plastic parts, plug connectors and other structures to finally form a charging gun for charging. When the utility model is provided with two plug bodies, it is correspondingly equipped with two liquid cooling oil inlet pipes 8, and three-way valves and other structures can be further provided on the two liquid cooling oil inlet pipes 8 for coordinated control and use.

[0032] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. The center liquid-cooled oil-type charging gun plug is characterized by ,include: At least one plug body, the plug body comprising a plug end, a plug middle part and a plug mounting part connected in sequence, the plug mounting part having a size larger than that of the plug middle part, the plug middle part having a size larger than that of the plug end, the plug middle part having an oil groove extending into the plug end, the plug mounting part having a cable welding head on a side away from the plug end, the cable welding head being used for welding cables; and The central liquid-cooled oil cooling structure is arranged in the plug-in mounting portion and connected to the oil-cooling groove. The central liquid-cooled oil cooling structure is used to form a liquid-cooled oil circuit with the oil-cooling groove to cool the plug body.

2. The central liquid-cooled oil-type charging gun plug according to claim 1 is characterized in that: The central liquid-cooled oil cooling structure includes a liquid-cooled oil inlet pipe, a liquid-cooled oil return pipe, a heat sink and an isolation plate. A mounting groove is provided in the plug-in mounting part, and the mounting groove is communicated with the oil flow groove. The isolation plate includes a first end of the isolation plate and a second end of the isolation plate. The size of the first end of the isolation plate is smaller than the size of the second end of the isolation plate. The heat sink is installed in the mounting groove and the middle upper side and the middle lower side of the heat sink are correspondingly provided with a first card slot and a second card slot. The isolation plate is inserted into the heat sink and the upper side and the lower side of the second end of the isolation plate are respectively clamped in the first card slot and the second card slot, and the second end of the isolation plate extends into the oil flow groove in the middle of the plug-in. The isolation plate divides the heat sink into a left chamber and a right chamber on the left and right sides. The liquid-cooled oil inlet pipe and the liquid-cooled oil return pipe are respectively connected to the left chamber or the right chamber, and the liquid-cooled oil inlet pipe and the liquid-cooled oil return pipe are not connected to the left chamber or the right chamber at the same time.

3. The central liquid-cooled oil-type charging gun plug according to claim 1 is characterized in that: A thermostat installation hole is provided at the lower part of one side of the plug-in installation portion away from the plug-in end, and a thermostat is installed in the thermostat installation hole.

4. The central liquid-cooled oil-type charging gun plug according to claim 2 is characterized in that: The plug-in installation portion is sleeved with a plug fixing plastic part.

5. The central liquid-cooled oil-type charging gun plug according to claim 2 is characterized in that: Sealing rings are provided at the connection points between the liquid cooling oil inlet pipe, the liquid cooling oil return pipe and the left chamber or the right chamber.

6. The central liquid-cooled oil-type charging gun plug according to claim 2, characterized in that: A plurality of heat dissipation baffles are respectively arranged on the left and right sides of the heat dissipation fin.

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