Liquid cooling charging gun suitable for high-pressure low-temperature environment

Abstract

The utility model discloses a liquid cooling charging gun suitable for a high pressure low temperature environment, belonging to the charging technology field, the liquid cooling charging gun suitable for the high pressure low temperature environment comprises a gun head, the bottom end of the gun head is provided with a protective cover close to the outer side in a clamping manner, and the middle part of the protective cover is provided with a charging wire in a penetrating manner. According to the technical scheme, the cooling liquid pipeline and the charging gun can be rapidly connected and detached, a cooling cavity in the charging gun can be conveniently cleaned, the cooling liquid pipeline can be rapidly connected with the charging gun, and the charging gun is convenient to use. The problem of unsmooth cooling liquid circulation caused by impurity accumulation is reduced, the liquid cooling effect is guaranteed, the sealing assembly is arranged, the sealing performance of the conveying pipe in the idle state is guaranteed, dust and impurities are prevented from entering the conveying pipe, and the problem of cooling liquid pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the field of charging technology, and more specifically, to a liquid-cooled charging gun suitable for high-voltage and low-temperature environments. Background Art

[0002] As the share of new energy vehicles in the market continues to rise, high-power fast charging technology has gradually become a key means to solve the bottleneck of battery life. However, high-power charging can easily cause the charging cable and charging gun to heat up. Therefore, liquid-cooled charging guns have appeared on the market. Liquid cooling can cool the charging gun, solving the heat dissipation problem during high-current and high-voltage charging, and effectively alleviating the charging concerns of new energy vehicle users.

[0003] Based on the above, the inventors found that the existing liquid-cooled charging gun mainly transports the coolant to the cooling chamber of the charging gun, and then circulates it back to complete liquid cooling. However, after the coolant has been used for a long time, impurities are likely to remain in the cooling chamber, and most coolant delivery pipelines are fixedly connected to the cooling chamber, which makes it inconvenient to clean the cooling chamber. Therefore, in view of this, the existing structure is studied and improved to provide a liquid-cooled charging gun suitable for high-pressure and low-temperature environments, in order to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a liquid-cooled charging gun suitable for high-voltage and low-temperature environments. This solution can quickly connect and remove the coolant pipeline and the charging gun, facilitate the cleaning of the cooling chamber inside the charging gun, reduce the problem of poor coolant circulation caused by impurity accumulation, ensure the liquid cooling effect, and provide a sealing component to ensure the sealing of the delivery pipe when idle, prevent dust and impurities from entering the delivery pipe, and reduce the problem of coolant pollution.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions.

[0008] A liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments, comprising a gun head, a protective cover being clamped and provided on the outside of the bottom end of the gun head, a charging cable being provided through the middle of the protective cover, and a delivery tube being provided through both sides of the protective cover, two connectors being fixedly connected to the end surface of the bottom end of the gun head, one end of each connector being fixedly connected to an extrusion sleeve, one end of each delivery tube being provided with a threaded sleeve on the front side, and one end of each delivery tube being fixedly connected to a fixing ring on the outside, and a sealing mechanism being fixedly connected to the interior of the fixing ring;

[0009] The sealing mechanism includes four sliding blocks arranged in an annular array, the inner side of the sliding block is provided with a pressure groove, and the outer side of the sliding block is slidably connected to a pair of guide rods, and the outer side of the guide rod is sleeved with a reset spring.

[0010] Furthermore, a bolt is threadedly connected to the connection between the protective cover and the gun head, and the top end of the charging cable is fixedly connected to the gun head.

[0011] Furthermore, the two connectors are connected through each other, and the outer surface of the connector fits the inner surface of the delivery pipe.

[0012] Furthermore, one end of the threaded sleeve is movably connected to the outer side of the delivery pipe, and the other end of the threaded sleeve is threadedly connected to the connector.

[0013] Furthermore, the sides of two adjacent sliding blocks are in contact with each other, and the sliding block is slidably connected to the fixing ring.

[0014] Furthermore, the outer side of the extrusion sleeve is arranged in an inclined shape, and the extrusion sleeve is adapted to the pressure groove.

[0015] Furthermore, one end of the guide rod and one end of the return spring are both fixedly connected to the inner surface of the fixing ring, and the other end of the return spring is fixedly connected to the sliding block.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This solution is to connect the delivery pipe to the connector by setting a connector and then move the threaded sleeve toward the connector and rotate the threaded sleeve to connect it with the connector thread to complete the connection and fixation of the delivery pipe and the connector. Conversely, the threaded sleeve can be rotated in the opposite direction to separate the connector from the delivery pipe. The cleaning liquid is injected into any connector, and the cleaning liquid passes through the cooling cavity and flows out from the other connector to complete the cleaning work. Compared with the existing technology, the coolant pipeline and the charging gun can be quickly connected and removed, which is convenient for cleaning the cooling cavity inside the charging gun, reducing the problem of poor coolant circulation caused by impurity accumulation, and ensuring the liquid cooling effect.

[0019] (2) By setting a sealing mechanism, when the extrusion sleeve enters the interior of the delivery pipe, it squeezes the pressure groove, causing the sliding block to slide outward, the four sliding blocks to separate, and the delivery pipe to be in a smooth state. When the extrusion sleeve moves from the interior of the delivery pipe, the sliding block is reset under the action of the reset spring, and the four sliding blocks fit together, so that the delivery pipe is in a sealed state. Compared with the existing technology, a sealing component is set to ensure the sealing of the delivery pipe in an idle state, prevent dust and impurities from entering the interior of the delivery pipe, and reduce the problem of coolant pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a disassembled diagram of the gun head and protective cover of the utility model;

[0022] Figure 3 This is a schematic diagram of the positional relationship between the delivery pipe and the connector of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the sealing mechanism of the present utility model.

[0024] Explanation of the numbers in the figure: 1. Gun head; 2. Protective cover; 3. Charging cable; 4. Delivery tube; 5. Connector; 6. Extrusion sleeve; 7. Threaded sleeve; 8. Fixed ring; 9. Sealing mechanism; 10. Sliding block; 11. Pressure groove; 12. Guide rod; 13. Return spring. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figure 1-4 A liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments includes a gun head 1. A protective cover 2 is clamped and provided on the outside of the bottom end of the gun head 1. A charging cable 3 is provided through the middle of the protective cover 2, and a delivery pipe 4 is provided on both sides of the protective cover 2. Two connectors 5 are fixedly connected to the end surface of the bottom end of the gun head 1. One end of the connector 5 is fixedly connected to an extrusion sleeve 6. A threaded sleeve 7 is provided on the front side of one end of the delivery pipe 4. A fixing ring 8 is fixedly connected to the outside of one end of the delivery pipe 4. A sealing mechanism 9 is fixedly connected to the interior of the fixing ring 8.

[0028] The sealing mechanism 9 includes four sliding blocks 10 arranged in a circular array. A pressure groove 11 is provided on the inner side of the sliding block 10, and a pair of guide rods 12 are slidably connected to the outer side of the sliding block 10. A return spring 13 is provided on the outer side of the guide rod 12. In order to ensure the sealing of the conveying pipe 4 when it is idle, a sealing mechanism 9 is provided.

[0029] See Figure 2 The connection between the protective cover 2 and the gun head 1 is threaded with a bolt, the top of the charging line 3 is fixedly connected to the gun head 1, and the connection between the gun head 1 and the charging line 3 and the connection between the connector 5 and the delivery pipe 4 are protected by the protective cover 2.

[0030] See Figure 3 The two connectors 5 are connected through, and the outer surface of the connector 5 fits with the inner surface of the delivery tube 4. The two delivery tubes 4 are respectively connected to the two connectors 5, so that the extrusion sleeve 6 enters the interior of the delivery tube 4. The coolant is transported and refluxed through the two delivery tubes 4 in cooperation with the two connectors 5 to complete the liquid cooling work.

[0031] See Figure 3 One end of the threaded sleeve 7 is movably connected to the outside of the delivery pipe 4, and the other end of the threaded sleeve 7 is threadedly connected to the connecting head 5. Move the threaded sleeve 7 toward the connecting head 5, and rotate the threaded sleeve 7 to threadably connect with the connecting head 5 to complete the connection and fixation between the delivery pipe 4 and the connecting head 5.

[0032] See Figure 4 The sides of two adjacent sliding blocks 10 are fitted together, and the sliding block 10 is slidably connected to the fixing ring 8. The sliding block 10 slides outward, and the sliding stability of the sliding block 10 is ensured by the guide rod 12. At the same time, the return spring 13 is compressed, so that the four sliding blocks 10 are separated and the pipeline is in a smooth state.

[0033] See Figure 4 The outer side of the extrusion sleeve 6 is arranged in an inclined shape, and the extrusion sleeve 6 is adapted to the pressure groove 11. During the movement of the extrusion sleeve 6, the pressure groove 11 is squeezed.

[0034] See Figure 4 One end of the guide rod 12 and one end of the return spring 13 are fixedly connected to the inner surface of the fixed ring 8, and the other end of the return spring 13 is fixedly connected to the sliding block 10. When the extrusion sleeve 6 is reset, the sliding block 10 is reset under the action of the return spring 13, and the four sliding blocks 10 are fitted together to put the conveying pipe 4 in a sealed state.

[0035] During use: first, respectively connect the two delivery pipes 4 with the two connectors 5, so that the extrusion sleeve 6 enters the interior of the delivery pipe 4. During the movement of the extrusion sleeve 6, the pressure groove 11 is squeezed to make the sliding block 10 slide outward. The sliding stability of the sliding block 10 is ensured by the guide rod 12. At the same time, the reset spring 13 is compressed, and the four sliding blocks 10 are separated. The delivery pipe 4 is in a smooth state. Then, the threaded sleeve 7 is moved toward the connector 5, and the threaded sleeve 7 is rotated to be threadedly connected to the connector 5 to complete the connection and fixation of the delivery pipe 4 and the connector 5. After that, the protective cover 2 is connected to the bottom end of the gun head 1 and fixed by bolts to protect the connection between the gun head 1 and the charging line 3, as well as the connection between the connector 5 and the delivery pipe 4. During use, the gun The delivery end of the head 1 is connected to the charging port, and the charging line 3 provides power to complete the charging work. During the charging process, the coolant is delivered and refluxed through the two delivery pipes 4 in cooperation with the two connectors 5 to complete the liquid cooling work and reduce safety hazards. On the contrary, the protective cover 2 is removed and the threaded sleeve 7 is rotated in the opposite direction at the same time to separate the connector 5 from the delivery pipe 4. Cleaning liquid is injected into any one of the connectors 5. The cleaning liquid passes through the cooling cavity and flows out from the other connector 5 to complete the cleaning work. In this process, under the action of the reset spring 13, the sliding block 10 is reset, and the four sliding blocks 10 are fitted together to make the delivery pipe 4 in a sealed state to prevent dust and impurities from entering the delivery pipe 4 and reduce the problem of coolant pollution.

[0036] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0037] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A liquid-cooled charging gun suitable for use in a high-voltage, low-temperature environment, comprising a gun head (1), a protective cover (2) being provided at the bottom end of the gun head (1) and being clamped to the outside, a charging line (3) being provided through the middle of the protective cover (2), and a delivery pipe (4) being provided through both sides of the protective cover (2), characterized in that: The bottom end surface of the gun head (1) is fixedly connected to two connectors (5), one end of the connector (5) is fixedly connected to an extrusion sleeve (6), one end of the delivery pipe (4) is sleeved with a threaded sleeve (7) on the front side, and one end of the delivery pipe (4) is fixedly connected to a fixing ring (8) on the outside, and the interior of the fixing ring (8) is fixedly connected to a sealing mechanism (9); The sealing mechanism (9) comprises four sliding blocks (10) arranged in an annular array, wherein a pressure groove (11) is provided on the inner side of the sliding block (10), and a pair of guide rods (12) are slidably connected to the outer side of the sliding block (10), and a return spring (13) is sleeved on the outer side of the guide rod (12).

2. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: The connection between the protective cover (2) and the gun head (1) is threadedly connected with a bolt, and the top end of the charging line (3) is fixedly connected to the gun head (1).

3. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: The two connectors (5) are connected through each other, and the outer surface of the connector (5) is in contact with the inner surface of the delivery pipe (4).

4. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: One end of the threaded sleeve (7) is movably connected to the outer side of the delivery pipe (4), and the other end of the threaded sleeve (7) is threadedly connected to the connector (5).

5. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: The sides of two adjacent sliding blocks (10) are fitted together, and the sliding block (10) is slidably connected to the fixing ring (8).

6. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: The outer side of the extrusion sleeve (6) is arranged in an inclined shape, and the extrusion sleeve (6) is adapted to the pressure groove (11).

7. The liquid-cooled charging gun suitable for use in high-voltage and low-temperature environments according to claim 1, characterized in that: One end of the guide rod (12) and one end of the return spring (13) are both fixedly connected to the inner surface of the fixed ring (8), and the other end of the return spring (13) is fixedly connected to the sliding block (10).

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