Terminal connecting assembly and charging gun

Abstract

The utility model discloses a terminal connecting assembly and a charging gun. The terminal connecting assembly comprises a plurality of connecting terminals and a conducting piece, and the plurality of connecting terminals are conductively connected through the conducting piece. The connecting terminal is provided with a first connecting part, a first cooling channel is arranged in the first connecting part, and the first cooling channel is connected with the liquid cooling pipe. According to the terminal connecting assembly, the plurality of connecting terminals and the plurality of liquid cooling pipes connected with the connecting terminals are arranged, so that the liquid flow in a cooling system is improved, the heat conduction effect is further enhanced, and the heat dissipation efficiency is improved. The terminal connecting assembly provided by the utility model is simple in structure and small in occupied volume, and can be used for effectively cooling during high-power charging, so that the service life of a charging system is prolonged, and the safety and stability of the charging process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and in particular to a terminal connection component and a charging gun. Background Art

[0002] In traditional charging systems, higher power charging requirements often increase the cable diameter. As the demand for high-power charging increases, the overall mass and space occupied by the charging system also increase. In addition, during high-power charging, the conductors and terminals have high temperatures, and it is difficult to achieve effective cooling of the heating area by relying on natural heat dissipation. The existing liquid cooling structure has low cooling efficiency for high-power charging systems and a relatively complex structure, which is not conducive to promotion and use. Utility Model Content

[0003] The purpose of the utility model is to provide a terminal connection assembly and a charging gun, which are designed to enhance the thermal conductivity and improve the heat dissipation efficiency, while reducing the overall occupied space of the charging system, optimizing the structural distribution, and making the charging system more efficient and convenient.

[0004] The utility model provides a terminal connection assembly, comprising:

[0005] A plurality of connection terminals and a conducting member, wherein the plurality of connection terminals are conductively connected through the conducting member; the connection terminal has a first connection portion, a first cooling channel is arranged in the first connection portion, and the first cooling channel is connected to a liquid cooling pipe.

[0006] In one embodiment, the first connecting portion is provided with an interface portion, and one end of the liquid cooling tube is sleeved on the outer wall of the interface portion; the connecting terminal is also provided with a fixing member, and the fixing member is sleeved on the outer wall of the connection between the liquid cooling tube and the interface portion.

[0007] In one embodiment, the interface portion is provided with a first flow opening along the axial direction, and a second flow opening is provided on the side of the first connection portion. The first flow opening is connected to the second flow opening and are arranged at an angle axially to form a first cooling channel; the second flow openings of the plurality of connection terminals are all provided on the same side.

[0008] In one embodiment, a power line is provided in the liquid cooling tube, a second cooling channel is formed between the power line and the liquid cooling tube, and the second cooling channel is connected to the first cooling channel.

[0009] In one embodiment, the connection terminal is further provided with a terminal tail portion, which is connected to the first connection portion, and a crimping hole is opened in the terminal tail portion, and one end of the power line passes through the first flow port to be conductively connected to the crimping hole.

[0010] In one embodiment, the terminal tail has a second connecting portion and a joint portion, the first connecting portion is connected to the joint portion through the second connecting portion; the joint portion has a first plane and a second plane perpendicular to the vertical, and a first through hole extending from the first plane to the second plane is opened on the joint portion, and the first through hole is arranged at an angle to the axial direction of the second flow port.

[0011] In one embodiment, the plurality of connection terminals are arranged vertically, the conductive member is located between joint portions of two adjacent connection terminals, the conductive member has a conductive surface perpendicular to the vertical direction, and the plurality of connection terminals are conductively connected to the conductive surface through the joint portions.

[0012] In one embodiment, the end of the liquid cooling tube away from the connecting terminal is connected to a terminal connector; a first cavity is provided in the terminal connector, and the terminal connector also has a plurality of liquid cooling plug-in ends arranged side by side in a vertical direction, each liquid cooling plug-in end is provided with a second cavity along the axial direction, and the liquid cooling plug-in end is connected to the liquid cooling tube, and the first cavity, the second cavity, the first cooling channel, and the second cooling channel are connected to form a cooling circuit.

[0013] In one embodiment, the terminal connection assembly has two connection terminals and a conductive piece, and the two connection terminals are conductively connected through the conductive piece; one of the two connection terminals is connected to a liquid inlet pipe, and the other is connected to a liquid outlet pipe; the terminal connector has two vertically arranged liquid-cooled plug-in ends, and the two liquid-cooled plug-in ends are respectively connected to the other end of the liquid inlet pipe and the liquid outlet pipe.

[0014] The utility model also provides a charging gun, which comprises: a shell and a plurality of the terminal connection assemblies described above.

[0015] The terminal connection assembly of the technical solution of the utility model includes a plurality of connection terminals and a conductive member, and the plurality of connection terminals are conductively connected through the conductive member. The connection terminal has a first connection portion, and a first cooling channel is provided in the first connection portion. The first cooling channel is connected to a liquid cooling pipe. By providing a plurality of connection terminals and a plurality of liquid cooling pipes, the liquid flow rate in the cooling channel is increased, thereby enhancing the heat conduction effect and improving the heat dissipation efficiency. The terminal connection assembly provided by the utility model has a simple structure and occupies a small volume. It can effectively cool down during high-power charging to extend the service life of the charging system and improve the safety and stability of the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a three-dimensional exploded view of an embodiment of a terminal connection assembly of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of a terminal connection assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting terminal of an embodiment of the terminal connecting assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of a conducting member of an embodiment of a terminal connection assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of a liquid cooling pipe joint of an embodiment of a terminal connection assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of a power terminal of an embodiment of a terminal connection assembly of the utility model;

[0023] Figure 7 It is a front view of an embodiment of a terminal connection assembly of the utility model;

[0024] Figure 8 yes Figure 7 Sectional view along line AA;

[0025] Fig. 9 This is a three-dimensional exploded view of a charging gun of an embodiment of a terminal connection assembly of the utility model;

[0026] Fig.10 This is a front view of a charging gun of an embodiment of a terminal connection assembly of the utility model;

[0027] Fig.11 yes Fig.10 Sectional view along line BB;

[0028] Description of Figure Numbers:

[0029] Label name Label name Label name 10 Connection Terminals 201 Conductive surface 701a Grooves 10a The first cooling channel 20a Second through hole 701b Second cavity 101 First connection part 30 Liquid cooling tube 702 Second fixing member 101a Second circulation port 30a Second cooling channel 703 Power Terminals 101b Liquid Cooling Cavity 301 Liquid inlet pipe 7031 Pin 102 Interface 302 Liquid outlet pipe 7032 Connecting plate 102a First circulation port 40 Power Line 7033 Extension 103 Terminal tail 401 First power line 704 Sealing ring 1031 Second connection part 402 Second power line 705 Screws 1032 Joint 50 Adapter 80 Gun Tip 1032a First plane 60 Nuts 801 Gun head housing 1032b Second plane 70 Terminal Connectors 802 Threading board 1032c First through hole 70a First cavity 803 Gun head seal 103a Crimp hole 701 Liquid cooling pipe joint 804 The third fixing 104 Fixings 7011 Liquid-cooled connector 805 Signal terminal 20 Conductive parts 7012 Base 806 O-Ring

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] The utility model provides a terminal connection assembly.

[0036] With the increase in demand for high-power charging, in traditional charging systems, the higher-power charging demand will increase the cable diameter, increasing the overall mass of the charging system. In addition, the conductors and terminals will have excessive temperatures during the charging process, and it is difficult to achieve effective cooling of the heating area by relying on natural heat dissipation.

[0037] In order to solve the above technical problems, the technical solution of the utility model is designed to meet the structural requirements of power line splitting and multiple liquid cooling tubes, and a terminal connection component with a special structure is designed to simplify the structure of the charging system and effectively cool the heating area, so as to extend the service life of the charging system and ensure a safer charging process.

[0038] Please refer to Figures 1 to 8 , the X-axis is defined as the arrangement direction of the multiple power terminals 80, the Y-axis is parallel to the flow direction of the liquid cooling tube 30, the direction perpendicular to the X-axis and the Y-axis is the Z-axis direction, the intersection of the X-axis, the Y-axis and the Z-axis is the origin O, and the three axes and the origin O together form a spatial rectangular coordinate system O-XYZ, the direction parallel to the Z-axis is defined as the vertical direction, and the direction parallel to the X-axis is defined as the horizontal direction. The following is explained based on this coordinate system as the orientation standard.

[0039] Please refer to Figures 1 to 8 In an embodiment of the utility model, the terminal connection assembly includes:

[0040] Multiple connection terminals 10 and conductive members 20 are conductively connected through the conductive members 20; the connection terminal 10 has a first connection portion 101, and a first cooling channel 10a is provided in the first connection portion 101, and the first cooling channel 10a is connected to the liquid cooling pipe 30. In this embodiment, the first cooling channel 10a is provided in the connection terminal 10, and when working, the cooling medium flows in the first cooling channel 10a, and while inputting and outputting the cooling medium, the heat in the connection terminal 10 and the heat at the connection between the connection terminal 10 and the conductive member 20 can also be taken away, so as to cool down the terminal connection assembly and improve the safety of the terminal liquid cooling assembly during charging. Multiple connection terminals 10 are conductively connected through the conductive member 20. It can be understood that the conductive member 20 is made of a metal conductive material. The conductive member 20 can be designed in a variety of shapes for easy installation. Preferably, the external shape of the conductive member 20 can be designed to be compatible with the external plug-in terminal. For example, a copper bar made of copper alloy or pure copper can be used. The copper bar has a simple structure, which reduces the production cost and process complexity of the overall structure. The copper bar is arranged between multiple connection terminals 10 to achieve current conduction between multiple connection terminals 10. A conductive member 20 is connected to multiple connection terminals 10. The first cooling channel 10a in each connection terminal 10 is connected to the liquid cooling pipe 30. The liquid cooling pipe 30 is mainly used for the input or output of the cooling medium. The liquid cooling pipe 30 can be made of a flexible material with good insulation, such as a flexible rubber pipe or a flexible plastic pipe. Different from the traditional single liquid cooling pipe structure, the terminal connection assembly of this embodiment optimizes the overall structure of the terminal connection assembly by setting a multi-liquid cooling pipe connection structure, improves the flow of the cooling medium in the terminal connection assembly, and thus enhances the heat conduction effect, effectively improving the cooling efficiency.

[0041] The utility model proposes an embodiment, an interface portion 102 is provided on the first connecting portion 101, and one end of the liquid cooling tube 30 is sleeved on the outer wall of the interface portion 102; the connecting terminal 10 is also provided with a fixing member 104, and the fixing member 104 is sleeved on the outer wall of the connection between the liquid cooling tube 30 and the interface portion 102.

[0042] For details, please refer to Figure 1-3 8. One end of the liquid cooling tube 30 is sleeved on the outer wall of the interface part 102, so that the cooling medium flows in the liquid cooling tube 30 and the first cooling channel 10a; it is understandable that in order to sleeve the liquid cooling tube 30 on the outer peripheral surface of the interface part 102, the inner diameter of the liquid cooling tube 30 should be greater than or equal to the outer diameter of the interface part 102. By sleeve-joining the liquid cooling tube 30 with the interface part 102, the connection between the liquid cooling tube 30 and the connecting terminal 10 and the delivery of the cooling medium can be simply realized. In order to improve the tightness of the connection between the liquid cooling tube 30 and the interface part 102, a fixing part 104 is provided on the outside of the connection between the liquid cooling tube 30 and the interface part 102. It is understandable that the fixing part 104 can be tied with wire or cable tie, or can be locked and fixed by nuts, so that the liquid cooling tube 30 is tightly connected to the connecting terminal 10. Preferably, the fixing part 104 can be a steel hoop. The steel hoop can be sleeved on the outer circumference of the liquid cooling tube 30, so that the connecting end of the liquid cooling tube 30 can be tightly fixed on the outer circumference of the interface part 102, so as to prevent the liquid cooling tube 30 and the connecting terminal 10 from being separated after long-term use, and ensure that the cooling medium will not leak. In addition, the steel hoop has a simple structure and is easy to install, which can further simplify the installation process. In the actual assembly process, the steel hoop is first sleeved on the outer circumference of the connection of the liquid cooling tube 30, and then the connection of the liquid cooling tube 30 is sleeved on the outer circumference of the interface part 102, and finally the steel hoop is pressed. A tight connection between the liquid cooling tube 30 and the connecting terminal 10 is achieved.

[0043] The utility model proposes an embodiment, the interface part 102 is provided with a first flow opening 102a along the axial direction, and the second flow opening 101a is provided on the side of the first connecting part 101, the first flow opening 102a is connected with the second flow opening 101a, and is arranged at an angle in the axial direction to form a first cooling channel 10a, and the second flow openings 101a of the plurality of connecting terminals 10 are all provided on the same side.

[0044] For details, please refer to Figure 1 , 38. A liquid cooling cavity 101b is provided in the first connection portion 101. The liquid cooling cavity 101b is connected with the first flow port 102a and the second flow port 101a to form a first cooling channel 10a. When working, the cooling medium flows into the liquid cooling cavity 101b through the second flow port 101a, and then flows into the liquid cooling tube 30 through the first flow port 102a. After flowing through another liquid cooling tube 30 through the joint device, it flows into the first flow port 102a of another connecting terminal 10, and after passing through the liquid cooling cavity 101b of another connecting terminal 10, it flows out through the second flow port 101a, thereby forming a flow cycle of the cooling medium. When the second flow ports 101a of multiple connecting terminals 10 are arranged on the same side, the position arrangement of multiple connecting terminals 10 in space can be optimized, and the space occupied by the overall structure can be reduced. It can be understood that the flow direction of the coolant is not limited in this embodiment, and the flow direction of the coolant can be set according to actual product needs. Furthermore, the connection terminal 10 further includes an adapter 50, which is detachably connected to the second flow port 101a. The adapter 50 and the second flow port 101a are separately provided, so that the structure and processing technology of the connection terminal 10 are simpler, the production efficiency is improved, and the processing cost is reduced, and the installation and disassembly are simplified. Preferably, the inner wall surface of the second flow port 101a is formed with an internal thread, and one end of the adapter 50 is provided with an external thread adapted to the second flow port 101a, and the second flow port 101a is connected to the adapter 50 through threaded matching. The other end of the adapter 50 is connected to a second liquid cooling pipe (not shown), which is used to input the cooling medium from the second liquid cooling pipe into the liquid cooling cavity 101b, or output the cooling medium from the liquid cooling cavity 101b to the liquid cooling cavity 101b. The adapter 50 is connected with a nut 60. The adapter 50 includes a first section and a second section adjacent to each other. The first section is provided with an external thread. The second liquid cooling tube is sleeved on the outside of the second section. The nut 60 has a first inner circumferential surface and a second inner circumferential surface adjacent to each other. The first inner circumferential surface is provided with an internal thread. The nut 60 is threadedly connected with the first section of the adapter 50 at the first inner circumferential surface. The nut 60 is sleeved on the outer circumferential surface of the second liquid cooling tube at the second inner circumferential surface to lock the second liquid cooling tube on the outer circumferential surface of the second section of the adapter 50. The nut 60 can be provided to achieve a tight connection between the second liquid cooling tube and the adapter 50 to prevent leakage of the cooling medium. During assembly, the second liquid cooling tube is sleeved on the outer circumferential surface of the second section of the adapter 50 first, and then the nut 60 is sleeved on the outer circumferential surface of the second liquid cooling tube. The nut 60 is rotated so that the first inner circumferential surface of the nut 60 is threadedly locked with the first section of the adapter 50, and the second inner circumferential surface of the nut 60 squeezes the second liquid cooling tube. The second liquid cooling tube is closely attached to the outer circumferential surface of the second section of the adapter 50, thereby achieving a reliable sealing effect. A sealing ring is also provided between the adapter 50 and the first connecting portion 101 to ensure a tight connection and prevent leakage of the cooling medium.

[0045] The utility model proposes an embodiment, a power line 40 is provided in the liquid cooling tube 30, a second cooling channel 30a is formed between the power line 40 and the liquid cooling tube 30, and the second cooling channel 30a is connected to the first cooling channel 10a.

[0046] For details, please refer to Figure 1 and Figure 8 The power line 40 is located in the liquid cooling tube 30. There is a second cooling channel 30a between the power line 40 and the liquid cooling tube 30 for the cooling medium to pass through. The first cooling channel 10a is connected to the second cooling channel 30a to ensure the flow of the cooling medium. When working, the cooling medium flows in the first cooling channel 10a and the second cooling channel 30a, which can take away the heat on the surface of the power line 40, and can also cool the connection between the power line 40 and the connection terminal 10, so as to achieve effective heat dissipation in the heating area, ensure the safety of the connection terminal 10 when in use, and extend the service life. In this embodiment, the cooling medium can flow from the first cooling channel 10a into the second cooling channel 30a, or from the second cooling channel 30a into the first cooling channel 10a. It can be understood that the flow direction of the cooling medium is not limited in this embodiment, and the flow direction of the cooling medium can be set according to actual product needs.

[0047] The utility model proposes an embodiment, the connecting terminal 10 is further provided with a terminal tail 103, the terminal tail 103 is connected to the first connecting part 101, a crimping hole 103a is opened in the terminal tail 103, one end of the power line 40 passes through the first flow port 102a and the liquid cooling cavity 101b to be conductively connected with the crimping hole 103a.

[0048] For details, please refer to Figure 3 and Figure 8The terminal tail 103 can be formed integrally with the first connection part 101 to improve the structural stability of the connection terminal 10. A crimping hole 103a is provided at one end of the terminal tail 103 facing the first connection part 101. The crimping hole 103a is connected to the liquid cooling cavity 101b, so that the crimping hole 103a is connected to the first cooling channel 10a. The crimping hole 103a is used to install the power line 40 to achieve electrical connection between the power line 40 and the terminal tail 103. The crimping hole 103a can be set as a circular hole or a square hole, which is not limited here. In actual application, it only needs to match the shape of the power line 40. It is understandable that when connecting the power line 40 to the connection terminal 10, one end of the power line 40 is first inserted into the first flow port 102a and the liquid cooling cavity 101b in sequence. As the power line 40 continues to penetrate into the connection terminal 10, one end of the power line 40 is inserted into the crimping hole 103a, and the power line 40 can be fixed in the crimping hole 103a by crimping, thereby achieving a conductive connection between the power line 40 and the connection terminal 10. It is understandable that the crimping hole 103a is connected to the first cooling channel 10a, so that the cooling medium flows through the crimping hole 103a, and the temperature at the connection between the power line 40 and the crimping hole 103a is cooled.

[0049] The utility model proposes an embodiment, the terminal tail 103 has a second connection part 1031 and a joint part 1032, the first connection part 101 is connected to the joint part 1032 through the second connection part 1031; the joint part 1032 has a first plane 1032a and a second plane 1032b perpendicular to the vertical direction, and a first through hole 1032c extending from the first plane 1032a to the second plane 1032b is opened on the joint part 1032, and the first through hole 1032c is arranged at an angle to the axial direction of the second flow port 101a.

[0050] For details, please refer to Figure 3 The connector 1032 is arranged at one end of the terminal tail 103 away from the first connection part 101. The connector 1032 and the second connection part 1031 can be integrally formed with the first connection part 101 to improve the structural stability of the connection terminal 10. The connector 1032 can be made of copper alloy or pure copper, and generally needs to be surface-treated with nickel plating, silver plating, etc. to improve the conductivity. The connector 1032 has a first plane 1032a and a second plane 1032b perpendicular to the vertical direction, and is provided with a first through hole 1032c extending from the first plane 1032a to 1032b. A fastener can be arranged in the first through hole 1032c. The fastener passes through the first through hole 1032c to connect and fix the connection terminal 10 to the external conductor or the installation body.

[0051] Furthermore, the plurality of connection terminals 10 are arranged vertically, the conductive member 20 is located between the joint portions 1032 of two adjacent connection terminals 10 , the conductive member 20 has a conductive surface 201 perpendicular to the vertical direction, and the plurality of connection terminals 10 are in contact with the conductive surface 201 through the joint portions 1032 for conductive connection.

[0052] For details, please refer to Figure 2 and Figure 4 , the conductive member 20 is also provided with a second through hole 20a, the second through hole 20a is set through the two conductive surfaces 201, and a fastener can be set in the second through hole 20a, and the fastener passes through the first through hole 1032c and the second through hole 20a to connect and fix the connecting terminal 10 with the conductive member 20. Preferably, the inner diameter of the first through hole 1032c is the same as that of the second through hole 20a, which is convenient for the fixed connection of the fastener. In this embodiment, a plurality of connecting terminals 10 are arranged vertically, and the first through hole 1032c and the axial direction of the second flow port 101a are arranged at an angle, so that the arrangement direction of the plurality of connecting terminals 10 is staggered with the direction of the second flow port 101a, and the position distribution of the second liquid cooling pipe (not shown) at the adapter 50 will not affect the position distribution of the docking head 1032 and the conductive member 20, which optimizes the structural distribution, makes the overall structure of the terminal connection assembly more compact, and reduces the overall occupied space of the liquid cooling system. It can be understood that when the conductive member 20 is arranged between the joint portions 1032 of two adjacent connecting terminals 10, the conductive surface 201 on one side of the conductive member 20 contacts the first plane 1032a of one of the connecting terminals 10, and the conductive surface 201 on the other side of the conductive member 20 contacts the second plane 1032b of the other connecting terminal 10, thereby realizing a conductive connection between the conductive member 20 and the connecting terminal 10.

[0053] The utility model proposes an embodiment, in which one end of the liquid cooling tube 30 away from the connecting terminal 10 is connected to a terminal connector 70, and a first cavity 70a is provided in the terminal connector 70. The terminal connector 70 also has a plurality of liquid cooling plug-in ends 7011 arranged side by side in a vertical direction, and each liquid cooling plug-in end 7011 is axially provided with a second cavity 701b. The liquid cooling plug-in end 7011 is connected to the liquid cooling tube 30, and the first cavity 70a, the second cavity 701b, the first cooling channel 10a, and the second cooling channel 30a are connected to form a cooling circuit.

[0054] For details, please refer to Figure 2 , Figure 5 , Figure 6 and Figure 8The liquid-cooling plug-in end 7011 is connected to the liquid-cooling tube 30, and one end of the liquid-cooling tube 30 is sleeved on the outer wall of the liquid-cooling plug-in end 7011, so that the cooling medium can flow in the second cooling channel 30a and the first cavity 70a and the second cavity 701b; it can be understood that in order to sleeve the liquid-cooling tube 30 on the outer peripheral surface of the liquid-cooling plug-in end 7011, the inner diameter of the liquid-cooling tube 30 should be greater than or equal to the outer diameter of the liquid-cooling plug-in end 7011. By sleeve-connecting the liquid-cooling tube 30 and the liquid-cooling plug-in end 7011, the connection between the liquid-cooling tube 30 and the terminal connector 70 and the transportation of the cooling medium can be simply realized. In order to improve the tightness of the connection between the liquid cooling tube 30 and the liquid cooling plug end 7011, a second fixing member 702 is provided outside the connection between the liquid cooling tube 30 and the liquid cooling plug end 7011. It can be understood that the second fixing member 702 can be tied by binding wire, cable tie, etc., or can be locked and fixed by nuts, so that the liquid cooling tube 30 is tightly connected to the terminal connector 70. Preferably, the second fixing member 702 is set as a steel hoop, which can be sleeved on the outer peripheral surface of the liquid cooling tube 30, so that the connecting end of the liquid cooling tube 30 can be tightly fixed on the outer peripheral surface of the liquid cooling plug end 7011 to prevent the liquid cooling tube 30 and the terminal connector 70 from being separated after long-term use, ensuring that the cooling medium will not leak, and the steel hoop has a simple structure and is easy to install, which can further simplify the installation process. In this embodiment, the terminal connector 70 includes a liquid cooling tube connector 701 and a power terminal 703, and the power terminal 703 has a pin 7031 and a connecting plate 7032 connected to the pin. Optionally, a protective screw is provided at one end of the pin 7031 away from the connecting plate 7032, which effectively prevents injuries caused by mistaken insertion of fingers, and has high safety. A groove 701a is provided at one end of the liquid-cooling pipe joint 701 facing the power terminal 703, and the connecting plate 7032 covers the notch of the groove 701a to form a first cavity 70a. The power terminal 703 is also provided with an extension 7033, which is provided at one end of the connecting plate 7032 away from the pin 7031, and the extension 7033 extends into the groove 701a, and the end of the power line 40 away from the connecting terminal 10 passes through the second cavity 701b and the first cavity 70a in the liquid-cooling plug end 7011 and is connected to the extension 7033. Preferably, the power line 40 and the extension 7033 are ultrasonically welded. This connection method is fast, efficient, has stable resistance performance and good conductivity, so that the electrical performance transmission efficiency of the overall structure is more stable and less heat is generated. In the actual assembly process, the extension 7033 of the power terminal 703 extends into the groove 701a, and the connecting plate 7032 covers the notch of the groove 701a. Optionally, the notch 701a of the liquid cooling pipe joint 701 is also provided with a base 7012, and a sealing ring 704 is further provided between the connecting plate 7032 and the base 7012. Optionally, the base 7012 is also provided with a connecting hole, and the screw 705 passes through the connecting hole to connect with the connecting plate.It can be understood that by providing a sealing ring between the connecting plate 7032 and the base 7012, the sealing between the power terminal 703 and the liquid cooling pipe joint 701 can be improved to prevent the cooling medium in the first cavity 70a from leaking from the gap between the power terminal 703 and the liquid cooling pipe joint 701. The tight connection between the power terminal 703 and the liquid cooling pipe joint 701 is achieved by passing the screw 705 through the connecting hole, and it is also convenient for the installation, disassembly and maintenance of the power terminal 703 and the liquid cooling pipe joint 701. One end of the power line 40 passes through the second cavity 701b, extends into the first cavity 70a, and is connected to the power terminal 703 to achieve the conductive connection between the power line 40 and the power terminal 703. The steel hoop is sleeved on the outer peripheral surface of the connection of the liquid cooling pipe 30, and then the connection of the liquid cooling pipe 30 is sleeved on the outer peripheral surface of the liquid cooling plug end 7011, and finally the steel hoop is pressed. The liquid cooling pipe 30 is firmly connected to the terminal joint 70. It can be understood that the first cavity 70a and the second cavity 701b are connected to the second cooling channel 30a, so that the cooling medium flows into the terminal connector 70 through the liquid-cooled plug-in end 701, thereby achieving cooling of the power terminal 703 and cooling of the connection between the power line 40 and the power terminal 703.

[0055] The utility model proposes an embodiment, the terminal connection assembly has two connection terminals 10 and a conductive piece 20, the two connection terminals 10 are conductively connected through the conductive piece 20; one of the two connection terminals 10 is connected to a liquid inlet pipe 301, and the other is connected to a liquid outlet pipe 302, the liquid inlet pipe 301 and the liquid outlet pipe 302 are connected to a terminal joint 70 at one end away from the two connection terminals 10; the terminal joint 70 has two liquid cooling plug ends 7011, and the two liquid cooling plug ends 7011 are respectively connected to the liquid inlet pipe 301 and the liquid outlet pipe 302; the cooling medium enters the liquid inlet pipe 301 from one connection terminal 10, flows into the terminal joint 70 through the liquid inlet pipe 301, and then flows out from the other connection terminal 10 through the liquid outlet pipe 302.

[0056] For details, please refer to Figure 2 and Figure 8The terminal connection assembly has two connection terminals 10, which are arranged vertically. A conductive member 20 is provided between the joint parts 1032 of the two connection terminals 10. The upper conductive surface 201 of the conductive member 20 contacts the first plane 1032a of the lower connection terminal 10, and the other side conductive surface 201 of the conductive member 20 contacts the second plane 1032b of the upper connection terminal 10, thereby realizing a conductive connection between the conductive member 20 and the two connection terminals 10. The upper connection terminal 10 is connected to a liquid inlet pipe 301 at the interface portion 102, and is connected to a second liquid inlet pipe (not shown) at the adapter 50, and the lower connection terminal 10 is connected to a liquid outlet pipe 302 at the interface portion 102, and is connected to a second liquid outlet pipe (not shown) at the adapter 50; the terminal connector 70 has two vertically distributed liquid cooling plug ends 7011, the upper liquid cooling plug end 7011 is connected to the liquid inlet pipe 301, and the lower liquid cooling plug end 7011 is connected to the liquid outlet pipe 302; one end of the liquid inlet pipe 301 and the liquid outlet pipe 302 is sleeved on the outer circumference of the interface portion 102, and is fastened to the two connection terminals 10 through the fixing member 104. The other end of the liquid inlet pipe 301 and the liquid outlet pipe 302 is sleeved on the outer circumference of the liquid cooling plug end 7011, and is fastened to the terminal connector 70 through the second fixing member 702. A first power line 401 is provided in the liquid inlet pipe 301, and a liquid inlet channel for cooling medium to pass through is provided between the liquid inlet pipe 301 and the first power line 401. One end of the first power line 401 is connected to the power terminal 703, and the other end is conductively connected to the upper connecting terminal 10. A second power line 402 is provided in the liquid outlet pipe 302, and a liquid outlet channel for cooling medium to pass through is provided between the liquid outlet pipe 302 and the second power line 402. One end of the second power line 402 is connected to the power terminal 703, and the other end is conductively connected to the lower connecting terminal 10. In this embodiment, the cooling medium flows in from the adapter 50 of the upper connection terminal 10, flows through the first cooling channel 10a of the upper connection terminal 10, flows into the liquid inlet pipe 301 through the interface portion 102, flows into the terminal joint 70 through the upper liquid cooling plug end 7011, and then flows into the liquid outlet pipe 302 through the lower liquid cooling plug end 7011, and flows into the lower second cooling channel 10a from the liquid outlet pipe 302 through the interface portion 102 of the lower connection terminal 10, and then flows out through the adapter 50 of the lower connection terminal 10, forming a set of cooling circuits to cool the power terminal 703, the power line 40, and the connection terminal 10. It can be understood that the flow direction of the cooling medium in this embodiment can be reversely designed according to the needs of the actual product.

[0057] The embodiment of the utility model further provides a charging gun, which includes a housing and a plurality of terminal connection assemblies as described above.

[0058] For details, please refer to Fig. 9 and Fig.11The charging gun has a shell, the shell includes a gun head 80 and a gun body (not shown), and the gun head 80 is arranged at the front end of the gun body. A gun head sealing ring 803 is arranged between the gun body and the gun head 80 to improve the sealing between the gun body and the gun head 80 and prevent liquid or other impurities from entering the charging gun. The charging gun is also provided with a third fixing member 804, and the gun body and the gun head 80 are provided with fixing holes corresponding to the third fixing member 804, and the third fixing member 804 passes through the fixing hole to fix the gun head 80 to the gun body. The gun head 80 includes a gun head shell 801, and a third cavity is provided in the gun head shell 801, and a threading plate 802 is provided in the third cavity. The threading plate 802 is provided with a plurality of first mounting grooves, and the power terminal 703 is clamped on the first mounting groove. A support seat is provided at one end of the threading plate 802 close to the first mounting groove, and the power terminal 703 abuts on the support seat to support the power terminal 703 to prevent the power terminal 703 and the gun head shell 801 from being displaced during the use of the charging gun. The threading plate 802 is also provided with a plurality of second mounting grooves, and the signal terminal 805 is inserted into the second mounting grooves. The gun head 80 is also provided with an O-ring 806, which is sleeved on the outer wall of the signal terminal 805 or the power terminal 703 to prevent rain and dust from entering the interior of the charging gun. Preferably, the charging gun has two sets of terminal connection assemblies, and the threading plate 802 has two first mounting grooves, and the power terminal 703 is clamped on the first mounting groove, so that the gun head 80 is connected to the two sets of terminal connection assemblies. Specifically, the two first mounting grooves are arranged horizontally, so that the two sets of terminal connection assemblies are arranged horizontally, and the adapters 50 of the two sets of terminal connection assemblies are parallel to the horizontal direction, and the adapters 50 of the two sets of terminal connection assemblies are arranged in opposite directions, so that the overall structure is more compact. The specific structure of the terminal connection assembly refers to the above embodiment. Since the charging gun adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A terminal connection assembly, characterized in that: include: A plurality of connection terminals and a conductive member, wherein the plurality of connection terminals are conductively connected through the conductive member; The connecting terminal has a first connecting portion, a first cooling channel is provided in the first connecting portion, and the first cooling channel is connected to the liquid cooling pipe.

2. The terminal connection assembly according to claim 1, characterized in that: The first connecting part is provided with an interface part, and one end of the liquid cooling tube is sleeved on the outer wall of the interface part; the connecting terminal is also provided with a fixing piece, and the fixing piece is sleeved on the outer wall of the connection between the liquid cooling tube and the interface part.

3. The terminal connection assembly according to claim 2, characterized in that: The interface portion is provided with a first flow opening along the axial direction, and the first connection portion is provided with a second flow opening on the side surface. The first flow opening is connected to the second flow opening and are arranged at an angle in the axial direction to form a first cooling channel; the second flow openings of the plurality of connection terminals are all provided on the same side surface.

4. The terminal connection assembly according to any one of claims 1 to 3, characterized in that: A power line is provided in the liquid cooling tube, a second cooling channel is formed between the power line and the liquid cooling tube, and the second cooling channel is communicated with the first cooling channel.

5. The terminal connection assembly according to claim 4, characterized in that: The connecting terminal is also provided with a terminal tail portion, which is connected to the first connecting portion. A crimping hole is provided in the terminal tail portion, and one end of the power line passes through the first flow port and is conductively connected to the crimping hole.

6. The terminal connection assembly according to claim 5, characterized in that: The terminal tail has a second connecting portion and a joint portion, the first connecting portion is connected to the joint portion through the second connecting portion; the joint portion has a first plane and a second plane perpendicular to the vertical direction, and a first through hole extending from the first plane to the second plane is opened on the joint portion, and the first through hole is arranged at an angle to the axial direction of the second flow port.

7. The terminal connection assembly according to claim 6, characterized in that: The plurality of connection terminals are arranged vertically, the conductive member is located between the joint portions of two adjacent connection terminals, the conductive member has a conductive surface perpendicular to the vertical direction, and the plurality of connection terminals are conductively connected to the conductive surface through the joint portions.

8. The terminal connection assembly according to claim 4, characterized in that: One end of the liquid cooling tube away from the connecting terminal is connected to a terminal connector; a first cavity is provided in the terminal connector, and the terminal connector also has a plurality of liquid cooling plug-in ends arranged side by side in a vertical direction, and a second cavity is opened in the liquid cooling plug-in end along the axial direction, and the liquid cooling plug-in end is connected to the liquid cooling tube, and the first cavity, the second cavity, the first cooling channel, and the second cooling channel are connected to form a cooling circuit.

9. The terminal connection assembly according to claim 8, characterized in that: The terminal connection assembly comprises two connection terminals and a conductive member, and the two connection terminals are conductively connected via the conductive member; One of the two connecting terminals is connected to a liquid inlet pipe, and the other is connected to a liquid outlet pipe; The terminal connector has two vertically arranged liquid-cooling plug-in ends, and the two liquid-cooling plug-in ends are respectively connected to the other end of the liquid inlet pipe and the other end of the liquid outlet pipe.

10. A charging gun, characterized in that: The charging gun includes a housing and a plurality of terminal connection assemblies according to any one of claims 1 to 9.

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