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 male terminal body and a male terminal seat connected with the male terminal body, the male terminal body is provided with an inner contact pin and an outer contact pin which is coaxial with the inner contact pin, the inner contact pin is provided with a plurality of bent sheets which are uniformly distributed in the circumferential direction, bent grooves are formed among the bent sheets, the outer contact pin is provided with a plurality of insertion sheets which are uniformly distributed in the circumferential direction, and the bent grooves are formed among the insertion sheets. Cleaving grooves are arranged among the plurality of inserting sheets, the outer surface of the inner inserting needle and the inner surface of the outer inserting needle form an inserting space which is in inserting connection with the female terminal body, and the inner inserting needle and the outer inserting needle are connected with the male terminal seat. According to the terminal connection assembly provided by the utility model, through the composite structure of the inner contact pin and the outer contact pin, the inner contact pin is provided with the plurality of bent sheets which are uniformly distributed in the circumferential direction, the bent grooves are arranged among the bent sheets, the outer contact pin is provided with the plurality of insertion sheets which are uniformly distributed in the circumferential direction, and the split grooves are arranged among the insertion sheets. The contact area of the male terminal and the female terminal is obviously increased, the electric energy transmission efficiency is improved, and heat generation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a terminal connection assembly and a charging gun. Background Technology

[0002] Automotive connector terminals are core components for achieving electrical connections and signal transmission, and their shape and performance design play a decisive role in the overall performance of the connector. Round pins offer the advantages of easy mating and relatively simple manufacturing processes, but their smaller contact area leads to lower power transmission efficiency and makes them prone to heat generation during high-current transmission. Square pins have a larger contact area and can carry higher currents, but require extremely high processing precision and tolerances; otherwise, poor contact may occur. Prong pins are suitable for high-current transmission and are typically used in high-power applications; their structural design requires additional support to ensure stability. Existing round pins suffer from low power transmission efficiency and increased heat generation due to their small contact area. Utility Model Content

[0003] The purpose of this invention is to provide a terminal connection assembly that increases the contact area, improves power transmission efficiency, and reduces heat.

[0004] This utility model proposes a terminal connection assembly, comprising:

[0005] The male terminal body and the male terminal socket connected to the male terminal body are provided. The male terminal body has an inner pin and an outer pin coaxially arranged with the inner pin. The inner pin has a plurality of circumferentially evenly distributed bent pieces, and a bent groove is provided between the plurality of bent pieces. The outer pin has a plurality of circumferentially evenly distributed rigid pieces, and a split groove is provided between the plurality of pieces. The outer surface of the inner pin and the inner surface of the outer pin form an insertion space for insertion into the female terminal. The inner pin and the outer pin are connected to the male terminal socket.

[0006] In one embodiment, the bent tab is located at the end of the inner pin away from the male terminal block, and the protrusion of the bent tab faces the outer pin.

[0007] In one embodiment, the insertion space is sequentially connected with an insertion guide, an insertion contact, and an insertion mating part along its opening toward the male terminal block. The cross-sectional area of ​​the insertion guide decreases from large to small, the cross-sectional area of ​​the insertion contact decreases from large to small and then increases again, and the cross-sectional area of ​​the insertion mating part remains unchanged.

[0008] In one embodiment, the male terminal block has a base, the inner pin and the outer pin are connected to the base, and a positioning hole is provided on one side of the base to insert and fix a temperature sensor.

[0009] In one embodiment, the male terminal block has a base body and a male terminal connector connected to the base body. The end of the base body away from the male terminal body is provided with a liquid cooling pipe connector. The end of the liquid cooling pipe connector facing the male terminal body has a groove. The base body is detachably connected to the groove opening to form a first cavity. The male terminal connector extends into the groove and is connected to the power line.

[0010] In one embodiment, a liquid cooling pipe is provided at one end of the liquid cooling pipe connector away from the male terminal body. The liquid cooling pipe has a power line inside, and a first cooling channel is formed between the power line and the liquid cooling pipe. The first cooling channel is in communication with the first cavity.

[0011] In one embodiment, the liquid cooling pipe connector further has a plurality of liquid cooling plug ends arranged side by side in a vertical direction, the liquid cooling plug ends having a second cavity opened in the axial direction, the liquid cooling plug ends being connected to the liquid cooling pipe, and the first cavity, the second cavity, and the first cooling channel being interconnected.

[0012] In one embodiment, the end of the liquid cooling pipe away from the male terminal body is provided with a connecting terminal. The connecting terminal has a connecting adapter and a tail connector. The connecting adapter has a second cooling channel that communicates with the liquid cooling pipe. The tail connector has a crimping hole. The power line passes through the connecting adapter and is electrically connected to an external conductive component within the crimping hole.

[0013] In one embodiment, the terminal connection assembly has two connection terminals, one of which is connected to one end of the liquid inlet pipe and the other is connected to one end of the liquid outlet pipe; the liquid cooling pipe connector has two vertically arranged liquid cooling plug ends, which are respectively connected to the other end of the liquid inlet pipe and the liquid outlet pipe.

[0014] This utility model also provides a charging gun, including a housing and a plurality of terminal connection assemblies as described above.

[0015] This utility model's terminal connection assembly includes a male terminal body and a male terminal holder connected to the male terminal body. The male terminal body has an inner pin and an outer pin coaxially arranged with the inner pin. The inner pin has multiple circumferentially evenly distributed bent pieces, with grooves between the bent pieces. The outer pin has multiple circumferentially evenly distributed inserts, with slots between the inserts. The outer surface of the inner pin and the inner surface of the outer pin form an insertion space for insertion into the female terminal body. The inner pin, outer pin, and male terminal holder are connected. The terminal connection assembly provided by this utility model, through the composite structure of the inner and outer pins—the inner pin having multiple circumferentially evenly distributed bent pieces with grooves between them, and the outer pin having multiple circumferentially evenly distributed inserts with slots between them—significantly increases the contact area between the male and female terminals through the synergistic effect of the bent pieces and inserts, thereby improving power transmission efficiency and reducing heat generation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

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

[0018] Figure 2 This is another perspective view of an embodiment of the terminal connection assembly of this utility model;

[0019] Figure 3 This is a partial enlarged view of the inner pin portion of an embodiment of the terminal connection assembly of this utility model;

[0020] Figure 4 This is a cross-sectional view of the male terminal body and male terminal holder of an embodiment of the terminal connection assembly of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of a liquid cooling pipe connector according to an embodiment of the terminal connection assembly of this utility model;

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

[0023] Figure 7 This is a three-dimensional structural schematic diagram of an embodiment of the terminal connection assembly of this utility model;

[0024] Figure 8This is a cross-sectional view of an embodiment of the terminal connection assembly of this utility model;

[0025] Figure 9 This is an exploded perspective view of a charging gun according to an embodiment of the terminal connection assembly of this utility model.

[0026] Figure 10 This is a three-dimensional structural diagram of a charging gun according to an embodiment of the terminal connection assembly of this utility model.

[0027] Explanation of icon numbers:

[0028]

[0029]

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

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] This utility model proposes a terminal connection assembly.

[0036] Automotive connector terminals are core components for achieving electrical connections and signal transmission, and their shape and performance design play a decisive role in the overall performance of the connector. Round pins offer the advantages of easy mating and relatively simple manufacturing processes, but their smaller contact area leads to lower power transmission efficiency and makes them prone to heat generation during high-current transmission. Square pins have a larger contact area and can carry higher currents, but require extremely high processing precision and tolerances; otherwise, poor contact may occur. Prong pins are suitable for high-current transmission and are typically used in high-power applications; their structural design requires additional support to ensure stability. Existing round pins suffer from low power transmission efficiency and increased heat generation due to their small contact area.

[0037] To address the aforementioned technical problems, this utility model provides a terminal connection assembly. By setting an inner pin and an outer pin, with the inner pin adopting a flexible sheet structure and the outer pin adopting a slotted structure, the contact area when the male terminal body and the female terminal body are inserted is further increased, thereby improving the power transmission efficiency and reducing heat generation, thus extending the service life of the charging system and ensuring a safer charging process.

[0038] Please refer to Figures 1 to 8 The terminal connection assembly 100 of this utility model includes a male terminal body 10 and a male terminal base 20 connected to the male terminal body 10. The male terminal body 10 has an inner pin 11 and an outer pin 12 coaxially arranged with the inner pin 11. The inner pin 11 has a plurality of circumferentially evenly distributed bent pieces 111, and a bent groove 11A is provided between the plurality of bent pieces 111. The outer pin 12 has a plurality of circumferentially evenly distributed inserts 121, and a split groove 12A is provided between the plurality of inserts 121. The outer surface of the inner pin 11 and the inner surface of the outer pin 12 form an insertion space 10A for insertion into the female terminal. The inner pin 11 and the outer pin 12 are connected to the male terminal base 20.

[0039] In this embodiment, the terminal connection assembly 100 has a male terminal, which has a male terminal body 10 and a male terminal seat 20 connected to the male terminal body 10. The male terminal body 10 is a composite structure of an inner pin 11 and an outer pin 12. The inner pin 11 has a plurality of circumferentially evenly distributed bent pieces 111, and a bent groove 11A is provided between the bent pieces 111. The bent pieces 111 of the inner pin 11 can undergo slight deformation during the insertion process, thereby better adapting to the shape of the female terminal, ensuring tightness and reliability of the contact, and providing better contact pressure during the insertion process. The bent groove 11A reduces The reduced mutual interference between the bent tabs 111 allows the inner pin 11 to better absorb tolerance errors during insertion, improving the fault tolerance of the insertion. The outer pin 12 has multiple circumferentially evenly distributed tabs 121, with slots 12A between the tabs 121. The tabs 121 of the outer pin 12 provide additional contact surface, significantly increasing the contact area with the female terminal and effectively reducing contact resistance. The slots 12A between the tabs 121 reduce friction during insertion, making it easier for the outer pin 12 to be inserted into the female terminal, while also reducing wear and heat that may be generated during insertion. The bent tabs 111 of the inner pin 11 provide elastic contact, while the tabs 121 of the outer pin 12 provide rigid support, allowing the terminal connection assembly 100 to better adapt to different tolerances and insertion conditions during insertion, while maintaining a stable electrical connection. The design of the bent tabs 11A and the slots 12A reduces friction during insertion, making the insertion process smoother and reducing mechanical wear and heat that may be generated during insertion. The male terminal body 10 also has an anti-accidental contact component. The anti-accidental contact component is located at the opening of the insertion space near the inner pin 11. The anti-accidental contact component can be a screw. The inner pin has a corresponding threaded hole. The anti-accidental contact component screw is tightened into the threaded hole of the inner pin 11. The screw is easy to install and remove, and is convenient for maintenance and inspection.

[0040] In one embodiment of this utility model, a bent piece 111 is disposed at the end of the inner pin 11 away from the male terminal block 20, and the protrusion 1111 of the bent piece 111 faces the outer pin 12.

[0041] This is understandable, please refer to... Figures 1-3The bent tab 111 is located at the end of the inner pin 11 furthest from the male terminal block 20. In other words, the bent tab 111 is at the very front end that contacts the female terminal, allowing it to contact the female terminal immediately during insertion, providing initial contact pressure and elastic support to ensure smooth insertion. The protrusion 1111 of the bent tab 111 faces the outer pin 12, increasing the contact area between the bent tab 111 and the female terminal, further reducing contact resistance and improving power transmission efficiency. The protrusion 1111 facing the outer pin 12 creates a stable contact space between the inner pin 11 and the outer pin 12. When inserted into the female terminal, the protrusion 1111 of the bent tab 111 works in conjunction with the inner surface of the outer pin 12 to provide more uniform contact pressure, ensuring reliable electrical connection.

[0042] In one embodiment of this utility model, the insertion space 10A is sequentially connected to the insertion guide 101A, the insertion contact 102A, and the insertion mating part 103A along the direction from its opening toward the male terminal block 20. The cross-sectional area of ​​the insertion guide 101A decreases from large to small, the cross-sectional area of ​​the insertion contact 102A decreases from large to small and then increases again, and the cross-sectional area of ​​the insertion mating part 103A remains unchanged.

[0043] It should be noted that the cross-sectional area in this utility model is the projected area along the radial direction of the male terminal body 10.

[0044] This is understandable, please refer to... Figure 1 , Figure 2 , Figure 4 The insertion space 10A is divided into three parts: the insertion guide 101A, the insertion contact 102A, and the insertion mating part 103A. The insertion guide 101A is located at the opening of the insertion space 10A. Its main function is to smoothly guide the female terminal into the insertion space 10A. Its cross-sectional area decreases from large to small, a design that acts like a "flare," facilitating alignment and smooth entry of the female terminal into the insertion space 10A. The insertion contact 102A initially decreases in cross-sectional area, ensuring a more concentrated contact point between the female and male terminals, providing initial contact pressure and guaranteeing a good electrical connection. Subsequently, the cross-sectional area increases, providing some movement space for the female terminal and reducing poor contact caused by insertion errors or vibration. The insertion mating part 103A maintains a constant cross-sectional area, ensuring a stable mechanical and electrical connection between the female terminal and the male terminal after insertion.

[0045] This utility model proposes an embodiment in which the male terminal block 20 has a base 21, an inner pin 11 and an outer pin 12 connected to the base 21, and a positioning hole 21A is provided on one side of the base 21 to insert and fix a temperature sensor 23.

[0046] This is understandable, please refer to... Figure 2 , Figure 10 The male terminal block 20 has a square base 21 with a positioning hole 21A for inserting and fixing the temperature sensor 23. This greatly facilitates the installation and positioning of the temperature sensor 23, ensures that the temperature sensor 23 is not easily damaged, and because the temperature sensor 23 is closer to the male terminal block 10, it can better monitor the temperature at the male terminal when the charging gun is working, thus greatly improving the reliability of the temperature sensor 23. The base 21 can also be a circular base or other types of bases, which are not limited here. The temperature sensor 23 can be a thermistor.

[0047] This utility model proposes an embodiment in which a male terminal block 20 has a base body 21 and a male terminal connector 22 connected to the base body 21. The end of the base body 21 away from the male terminal body 10 is provided with a liquid cooling pipe connector 30. The end of the liquid cooling pipe connector 30 facing the male terminal body 10 is provided with a groove 30A. The base body 21 is detachably connected to the groove opening of the groove 30A to form a first cavity 30B. The male terminal connector 22 extends into the groove 30A and is connected to the power line 50.

[0048] Specifically, please refer to Figure 5 , Figure 7 , Figure 8 The male terminal block 20 has a base 21 and a male terminal connector 22 connected to the base 21. A liquid cooling pipe connector 30 is provided at the end of the base 21 away from the male terminal body 10. A base 32 protrudes from the groove 30A of the liquid cooling pipe connector 30. A connector sealing ring 33 is provided between the base 21 of the male terminal block 20 and the base 32 of the liquid cooling pipe connector 30. Optionally, a positioning pin is provided on the base 32, and a positioning hole is provided on the base 21. The base 21 and the base 32 are connected by the positioning pin and the positioning hole. Furthermore, by providing a connector sealing ring 33 between the base 21 of the male terminal block 20 and the base 32 of the liquid cooling pipe connector 30, the sealing performance between the male terminal block 20 and the liquid cooling pipe connector 30 can be improved, preventing the cooling medium in the first cavity 30B from leaking from the gap between the male terminal block 20 and the liquid cooling pipe connector 30. The locating pin and locating hole are used to achieve a tight connection between the male terminal and the liquid cooling pipe connector 30, which also facilitates the installation, disassembly and maintenance of both the male terminal and the liquid cooling pipe connector 30.

[0049] In one embodiment of this utility model, a liquid cooling pipe 40 is provided at the end of the liquid cooling pipe connector 30 away from the male terminal body 10. The liquid cooling pipe 40 has a power line 50 inside, and a first cooling channel 40A is formed between the power line 50 and the liquid cooling pipe 40. The first cooling channel 40A is connected to the first cavity 30B.

[0050] Specifically, please refer to Figure 7 , Figure 8 , Figure 9 , Figure 10The liquid cooling pipe connector 30 is connected to the liquid cooling pipe 40. The male terminal connector 22 extends into the groove 30A, and one end of the power line 50 passes through the first cavity 30B of the liquid cooling pipe connector 30 and connects to the male terminal connector 22. Preferably, the power line 50 and the male terminal connector 22 are ultrasonically welded. This connection method is fast, efficient, has stable resistance performance and good conductivity, making the overall structure's electrical performance transmission efficiency more stable and generating less heat. The power line 50 is located inside the liquid cooling pipe 10, and there is a first cooling channel 40A between the power line 50 and the liquid cooling pipe 30 for the cooling medium to pass through. The first cooling channel 40A is connected to the first cavity 30B to ensure the flow of the cooling medium. During operation, the cooling medium flows in the first cooling channel 40A and the first cavity 30B, which not only removes heat from the surface of the power line 50, but also cools the connection between the power line 50 and the male terminal connector 22, thereby achieving effective heat dissipation of the heat-generating area, ensuring the safety of the male terminal during use, and extending its service life.

[0051] In one embodiment of this utility model, the liquid cooling pipe connector 30 further has a plurality of liquid cooling plug ends 31 arranged side by side in the vertical direction. The liquid cooling plug ends 31 have a second cavity 31A opened in the axial direction. The liquid cooling plug ends 31 are connected to the liquid cooling pipe 40, and the first cavity 30B, the second cavity 31A and the first cooling channel 40A are connected.

[0052] Specifically, please refer to Figure 5 , Figure 8 , Figure 9 The liquid-cooled pipe connector 30 has multiple liquid-cooled plug ends 31 arranged side by side in a vertical direction. Each liquid-cooled plug end 31 has a second cavity 31A opened axially. One end of the liquid-cooled pipe 40 is fitted onto the outer wall of the liquid-cooled plug end 31. Understandably, in order to fit the liquid-cooled pipe 40 onto the outer circumference of the liquid-cooled plug end 31, the inner diameter of the liquid-cooled pipe 40 should be greater than or equal to the outer diameter of the liquid-cooled plug end 31. By fitting the liquid-cooled pipe 40 onto the liquid-cooled plug end 31, the connection between the liquid-cooled pipe 40 and the liquid-cooled pipe connector 30 and the transport of the cooling medium can be easily achieved. To improve the tightness of the connection between the liquid-cooled pipe 40 and the liquid-cooled plug end 31, a second fixing member is provided externally at the connection point. The second fixing member can be a steel hoop or a locking method such as a nut; no limitation is made here. Steel hoops have a simple structure, are easy to install, and can further simplify the installation process. During installation, one end of the power line 50 passes through the second cavity 31A in the liquid-cooled plug-in terminal 31, extends into the first cavity 30B, and connects to the male terminal connector 22 to achieve a conductive connection between the power line 50 and the male terminal. The steel hoop is fitted onto the outer circumference of the connection of the liquid-cooled pipe 40, and then the connection of the liquid-cooled pipe 30 is fitted onto the outer circumference of the liquid-cooled plug-in terminal 7011. Finally, the steel hoop is pressed tightly.

[0053] In one embodiment of this utility model, a connecting terminal 60 is provided at the end of the liquid cooling pipe 40 away from the male terminal body 10. The connecting terminal 60 has a connecting adapter 61 and a tail connector 62. The adapter 61 is provided with a second cooling channel 61A, which communicates with the liquid cooling pipe 40. A crimping hole 62A is provided in the tail connector 62. The power line 50 passes through the adapter 61 and is electrically connected to an external conductive component in the crimping hole 62A.

[0054] Specifically, please refer to Figure 6 , Figure 9The adapter 61 has an interface 611 with a first flow port along its axial direction and a second flow port on its side. The first and second flow ports communicate with each other and are angled axially to form a second cooling channel 61A. The second flow ports of multiple connecting terminals 60 are all located on the same side. The adapter 61 has an adapter 612 located at the second flow port to facilitate the inflow and outflow of cooling medium. One end of the liquid cooling pipe 40, away from the male terminal body 10, is fitted onto the outer wall of the interface portion 611. The liquid cooling pipe 40 is fitted onto the outer wall of the interface portion 611 by a first fixing member. It can be understood that the fitting of one end of the liquid cooling pipe 40 onto the outer wall of the interface portion 611 allows the cooling medium to flow within the liquid cooling pipe 40 and the second cooling channel 61A. It can also be understood that in order to fit the liquid cooling pipe 40 onto the outer circumferential surface of the interface portion 611, the inner diameter of the liquid cooling pipe 40 should be greater than or equal to the outer diameter of the interface portion 611. Through the fitting method between the liquid cooling pipe 40 and the interface portion 611, the connection between the liquid cooling pipe and the connecting terminal 60 and the delivery of the cooling medium can be easily achieved. Furthermore, in order to improve the tightness between the liquid cooling pipe 40 and the interface portion 611, a first fixing member is provided on the outside of the connection between the liquid cooling pipe 40 and the interface portion 611. The first fixing member can be a steel hoop or a locking method such as a nut, which is not limited here. A steel hoop can be fitted onto the outer circumference of the liquid cooling pipe 40, ensuring a tight fit between the connection end of the liquid cooling pipe 40 and the outer circumference of the interface portion 611. This prevents the liquid cooling pipe 40 from detaching from the connection terminal 60 after prolonged use, ensuring no leakage of the cooling medium. Furthermore, the steel hoop has a simple structure and is easy to install, further simplifying the installation process. In actual assembly, the steel hoop is first fitted onto the outer circumference of the connection point of the liquid cooling pipe 40, then the connection point of the liquid cooling pipe 40 is fitted onto the outer circumference of the interface portion 611, and finally the steel hoop is tightened to achieve a secure connection between the liquid cooling pipe 40 and the connection terminal 60. The tail section 62 can be integrally formed with the adapter section 61, thereby improving the structural stability of the connection terminal 60. The tail connector 62 has a crimping hole 62A at one end facing the adapter 61. The crimping hole 62A communicates with the second cooling channel 61A and is used to install the power wire 50 to achieve an electrical connection between the power wire 50 and the tail connector 62. The crimping hole 62A can be a circular hole or a square hole, and is not limited here. In practical applications, it only needs to match the shape of the power wire 50. It can be understood that when connecting the power wire 50 and the connecting terminal 60, one end of the power wire 50 is first inserted into the second cooling channel 61A through the interface part 611. As the power wire 50 continues to penetrate deeper into the connecting terminal 60, one end of the power wire 40 extends into the crimping hole 62A. The power wire 50 is fixed in the crimping hole 62A by crimping, thereby achieving a conductive connection between the power wire 50 and the connecting terminal 60.It is understandable that the crimp hole 62A is connected to the second cooling channel 61A, so that the cooling medium flows through the crimp hole 62A to achieve cooling at the connection between the power line 50 and the crimp hole 62A.

[0055] This utility model proposes an embodiment in which the terminal connection assembly 100 has two connection terminals 60, one of which is connected to one end of the liquid inlet pipe 41 and the other is connected to one end of the liquid outlet pipe 42; the liquid cooling pipe connector 30 has two vertically arranged liquid cooling plug ends 31, which are respectively connected to the other end of the liquid inlet pipe 41 and the liquid outlet pipe 42.

[0056] Specifically, please refer to Figure 7 , Figure 8 , Figure 9 The terminal connection assembly 100 has two connection terminals 60 arranged vertically. The upper connection terminal 60 is connected to an inlet pipe 41 at an interface 611, and the lower connection terminal 60 is connected to an outlet pipe 42 at an interface 611. The liquid cooling pipe connector 30 has two vertically arranged liquid cooling plug ends 31. The upper liquid cooling plug end 31 is connected to the inlet pipe 41, and the lower liquid cooling plug end 31 is connected to the outlet pipe 42. One end of the inlet pipe 41 and the outlet pipe 42 is fitted onto the outer peripheral surface of the interface 102 and is securely connected to the two connection terminals 60 by a first fixing member. The other end of the inlet pipe 41 and the outlet pipe 42 is fitted onto the outer peripheral surface of the liquid cooling plug end 31 and is securely connected to the liquid cooling pipe connector 30 by a second fixing member. The liquid inlet pipe 41 is provided with a first power line 51, and there is a liquid inlet channel between the liquid inlet pipe 41 and the first power line 51 for the cooling medium to pass through. One end of the first power line 51 is connected to the male terminal connector 22 of the male terminal block 20 of the male terminal, and the other end is electrically connected to the upper connection terminal 60. The liquid outlet pipe 42 is provided with a second power line 52, and there is a liquid outlet channel between the liquid outlet pipe 42 and the second power line 52 for the cooling medium to pass through. One end of the second power line 52 is connected to the male terminal connector 22 of the male terminal block 20 of the male terminal, and the other end is electrically connected to the lower connection terminal 60. In this embodiment, the cooling medium flows in from the second flow port of the upper connecting terminal 60, passes through the second cooling channel 61A of the upper connecting terminal 60, flows into the liquid inlet pipe 41 through the interface 611, flows sequentially into the upper second cavity 31A and the first cavity 30B through the upper liquid-cooled plug-in terminal 31, then flows into the lower second cavity 31A and the liquid outlet pipe 42 through the lower liquid-cooled plug-in terminal 31, and flows from the liquid outlet pipe 42 into the lower second cooling channel 61A through the interface 611 of the lower connecting terminal 60, and then flows out through the second flow port of the lower connecting terminal 60, forming a cooling circuit to cool the male terminal, power line 50, and connecting terminal 60. It can be understood that the flow direction of the cooling medium in this embodiment can be designed in reverse according to the actual product requirements.

[0057] This utility model embodiment also proposes a charging gun, which includes a housing and multiple sets of terminal connection assemblies 100 as described above.

[0058] Specifically, please refer to Figure 9 , Figure 10 The charging gun has a housing, which includes a gun head 70 and a gun body (not shown). The gun head 70 is located at the front end of the gun body. The gun head 70 includes a gun head housing 701, on the side of which a drain hole 703 is provided. A third cavity is provided in the gun head housing 701, and a cable guide plate 702 is provided in the third cavity. The cable guide plate 702 has multiple first mounting slots, and male terminals are snapped into the first mounting slots. The cable guide plate 702 also has multiple second mounting slots, and signal terminals 80 are passed through the second mounting slots. The charging gun has two sets of terminal connection assemblies 100. The cable guide plate 702 has two first mounting slots, and male terminals are snapped into the first mounting slots, so that the gun head 70 is connected to the two sets of terminal connection assemblies 100. Specifically, the two first mounting slots are arranged horizontally, so that the two sets of terminal connection components 100 are arranged horizontally. The specific structure of the terminal connection components 100 is as described in 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 described in detail here.

[0059] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A terminal connection assembly, characterized by, The male terminal body has an inner pin and an outer pin coaxially arranged with the inner pin, the inner pin has a plurality of circumferentially uniformly distributed bending pieces, and a bending groove is arranged between the plurality of bending pieces, the outer pin has a plurality of circumferentially uniformly distributed insertion pieces, and a splitting groove is arranged between the plurality of insertion pieces, an outer surface of the inner pin and an inner surface of the outer pin form an insertion space for plugging with a female terminal, and the inner pin, the outer pin and the male terminal seat are connected.

2. The terminal connection assembly of claim 1, wherein, The bending pieces are arranged at one end of the inner pin away from the male terminal seat, and a convex part of the bending piece faces the outer pin.

3. The terminal connection assembly of claim 2, wherein, The insertion space is sequentially connected with an insertion guiding part, an insertion contact part and an insertion docking part in a direction in which the insertion space is open and faces the male terminal seat, a cross-sectional area of the insertion guiding part decreases from large to small, a cross-sectional area of the insertion contact part decreases from large to small and then increases, and a cross-sectional area of the insertion docking part is constant.

4. The terminal connection assembly of claim 1, wherein, The male terminal seat has a seat body, the inner pin, the outer pin and the seat body are connected, and a positioning hole is arranged on one side of the seat body to insert and fix a temperature sensor.

5. The terminal connection assembly of claim 1, wherein, The male terminal seat has a seat body and a male terminal connector connected with the seat body, one end of the seat body away from the male terminal body is provided with a liquid cooling pipe connector, a recess is arranged at one end of the liquid cooling pipe connector facing the male terminal body, the seat body is detachably connected at a slot opening of the recess to form a first cavity, and the male terminal connector extends into the recess and is connected with a power line.

6. The terminal connection assembly of claim 5, wherein, One end of the liquid cooling pipe connector away from the male terminal body is provided with a liquid cooling pipe, the liquid cooling pipe has a power line therein, a first cooling channel is formed between the power line and the liquid cooling pipe, and the first cooling channel is in communication with the first cavity.

7. The terminal connection assembly of claim 6, wherein, The liquid cooling pipe connector further has a plurality of liquid cooling plug-in ends arranged side by side in a vertical direction, the liquid cooling plug-in ends are provided with a second cavity in an axial direction, the liquid cooling plug-in ends are connected with the liquid cooling pipe, and the first cavity, the second cavity and the first cooling channel are in communication.

8. The terminal connection assembly of claim 7, wherein, One end of the liquid cooling pipe away from the male terminal body is provided with a connecting terminal, the connecting terminal has a switching part and a tail part connected with each other, the switching part is provided with a second cooling channel, the second cooling channel is in communication with the liquid cooling pipe, a pressure contact hole is arranged in the tail part, and the power line is conductively connected with an external conductive part in the pressure contact hole through the switching part.

9. The terminal connection assembly of claim 8, wherein, The terminal connecting assembly has two connecting terminals, one of the two connecting terminals is connected with one end of an inlet pipe, and the other is connected with one end of an outlet pipe; the liquid cooling pipe connector has two vertically arranged liquid cooling plug-in ends, and the two liquid cooling plug-in ends are respectively connected with the other end of the inlet pipe and the outlet pipe.

10. A charging gun comprising a shell and a plurality of terminal connecting assemblies according to any one of claims 1 to 9.

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