A high-power liquid-cooled terminal and connector

Abstract

The present invention discloses a high-power liquid-cooled terminal and connector, which relates to the technical field of charging guns, and solves the problem of unclear heat dissipation during high-power charging in existing charging gun connectors. The high-power liquid-cooled terminal includes: a plug-in terminal, a liquid-cooling unit and at least one conductor terminal; the liquid-cooling unit includes a liquid-cooling kit and at least two liquid-cooling tubes; the liquid-cooling kit is provided with a placement cavity, the plug-in terminal is inserted into the placement cavity from the bottom end of the liquid-cooling kit, one end of the conductor terminal passes through a liquid-cooling tube and is inserted into the placement cavity to be electrically connected with the plug-in terminal; the liquid-cooling tube is connected to the placement cavity at the top of the liquid-cooling kit, and a liquid-cooling tube is used to inject liquid into the placement cavity. The present invention sets the number of conductor terminals according to the power to achieve high-power charging, and injects the liquid used for cooling into the placement cavity and guides the liquid in the placement cavity through the liquid-cooling tube, which can effectively take away the heat generated by the conductor terminal and the plug-in terminal in the placement cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of charging guns, and in particular to a high-power liquid-cooled terminal and connector. Background Art

[0002] With the development of society, the demand for high-power charging guns is increasing. Since charging guns are handheld plug-in products, there are greater requirements for the weight of charging guns. For example, the weight of the charging gun cannot be too high, so that users can easily lift the charging gun for charging and plugging, and users can use it flexibly. However, in the charging gun, the larger the current carrying capacity, the larger the conductor, and the larger the conductor, the heavier the overall mass. At the same time, because the current carrying capacity increases, the heat generated by the conductor increases. If the charging gun cannot be effectively cooled in time, it means that there are always safety hazards in the use of the charging gun. Summary of the invention

[0003] The purpose of the present invention is to provide a high-power liquid-cooled terminal and connector to solve the problem of unclear high-power charging heat dissipation in existing charging gun connectors.

[0004] In a first aspect, the present invention provides a high-power liquid-cooled terminal, the high-power liquid-cooled terminal comprising: a plug-in terminal, a liquid-cooling unit and at least one conductor terminal;

[0005] The liquid cooling unit comprises a liquid cooling kit and at least two liquid cooling tubes; the liquid cooling kit is provided with a placement cavity, the plug-in terminal is inserted into the placement cavity from the bottom end of the liquid cooling kit, and one end of the conductor terminal passes through one of the liquid cooling tubes and is inserted into the placement cavity to be electrically connected with the plug-in terminal;

[0006] The liquid cooling tube is connected with the placement cavity at the top end of the liquid cooling kit and is used to inject liquid into the placement cavity.

[0007] Preferably, the high-power liquid-cooling terminal further comprises: a clamping ring assembly, the clamping ring assembly is clamped on the outer wall of the liquid-cooling kit and fixedly connects the liquid-cooling kit with other structures;

[0008] The clamping ring assembly includes a clamping ring and a first fastener, the clamping ring is clamped with the liquid cooling kit, both ends of the clamping ring are respectively provided with a protruding first fastening portion, and a penetrating first fixing hole is provided in the first fastening portion, and one end of the first fastener passes through the first fixing hole and is fixedly connected to other structures.

[0009] Preferably, a second fastening portion is provided on the clamping ring, the second fastening portion comprises a cylindrical protrusion and a baffle, a second penetrating fixing hole is provided on the cylindrical protrusion, the baffle is provided on a side of the clamping ring away from the cylindrical protrusion; a slideway is provided on a side of the baffle facing the center;

[0010] The outer wall of the liquid cooling kit is provided with a avoidance groove, the slide is connected to the second fixing hole, one end of a second fastener is inserted from the second fixing hole and placed between the slide and the liquid cooling kit, and the other end of the second fastener is embedded in the avoidance groove.

[0011] Preferably, the top end is provided with at least one plug port and a liquid inlet port, the plug port is used for inserting the conductor terminal and the liquid cooling tube, the plug port is provided with a first fastening thread on the outside and is threadedly tightened with a fastening sleeve having a second fastening thread on the inner wall;

[0012] A third fastening thread is provided in the liquid inlet port, one end of the liquid cooling pipe is connected to a liquid pipe joint and inserted into the liquid inlet port, and the liquid pipe joint is tightened and connected to the liquid inlet port through the third fastening thread.

[0013] Preferably, an abutment hole is provided in the plug port, and two ends of the abutment hole are respectively connected to the plug port and the placement cavity;

[0014] One end of the conductor terminal sequentially passes through the plug port and the abutment hole into the placement cavity to be electrically connected with the plug terminal, and the liquid cooling tube sleeve is arranged outside the conductor terminal and one end is placed in the plug port;

[0015] Wherein, the diameter of the liquid cooling tube is smaller than the diameter of the abutment hole and smaller than the diameter of the plug port.

[0016] Preferably, the liquid cooling unit also includes a sealing assembly, which includes a first seal and a first sealing ring. The first seal is a hollow cylindrical structure. The outer wall of one end of the first seal that abuts the abutment hole is provided with a first sealing groove. The first sealing ring is installed in the first sealing groove. The other end of the first seal is embedded between the liquid cooling tube and the conductor terminal.

[0017] Preferably, the plug-in terminal comprises a welding plate and a plug-in body, and the welding plate is arranged on the end surface of the plug-in body;

[0018] The plug-in body is used to be inserted into the placement cavity. The plug-in body is provided with a second sealing groove, and a second sealing ring is embedded in the sealing groove.

[0019] Preferably, the side wall of the plug-in body is recessed inward to form an anti-rotation surface;

[0020] An inwardly protruding boss is disposed on the inner wall of the liquid cooling kit, and the boss is used to engage with the anti-rotation surface to locate the installation positions of the liquid cooling kit and the plug-in terminal.

[0021] Preferably, a third fixing hole is provided in the plug-in body;

[0022] A fourth fixing hole is arranged at the bottom end of the liquid cooling kit, and a fixing member passes through the fourth fixing hole and enters the third fixing hole to fix the clamping ring assembly to the liquid cooling kit.

[0023] In a second aspect, the present invention provides a connector, comprising at least one high-power liquid-cooled terminal provided in the first aspect.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the high-power liquid-cooled terminal and connector provided by the present invention realize the transmission of current and effectively cool the conductor by setting the high-power liquid-cooled terminal, each of the high-power liquid-cooled terminals includes a plug-in terminal, a liquid-cooling unit and at least one conductor terminal, the liquid-cooling unit includes a liquid-cooling kit and at least two liquid-cooling tubes, the plug-in terminal and the conductor terminal are electrically connected in the placement cavity of the liquid-cooling kit, a liquid for cooling is injected into the placement cavity through one of the liquid-cooling tubes, and the liquid in the placement cavity is then led out from another liquid-cooling tube, so as to realize the effective cooling of the conductor terminal in the liquid-cooling tube and the electrical position of the conductor terminal and the plug-in terminal;

[0025] At the same time, the number of conductor terminals is selected according to the charging power requirements, and high-power charging can be achieved according to user needs. The liquid cooling kit and the liquid cooling tube can be used to inject cooling liquid into the placement cavity and at the same time drain the liquid in the placement cavity, which can effectively take away the heat generated by the electrical connection of the conductor terminals and the plug-in terminals in the placement cavity and protect the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0028] Figure 1 A schematic diagram of the structure of a high-power liquid-cooled terminal provided in Example 1;

[0029] Figure 2 A cross-sectional view of a high-power liquid-cooled terminal provided in Example 1;

[0030] Figure 3 A schematic diagram of the structure of the clamping ring assembly in the high-power liquid-cooled terminal provided in Example 1

[0031] Figure 4 A schematic diagram of the structure of a clamping ring in a high-power liquid-cooled terminal provided in Example 1;

[0032] Figure 5 A schematic diagram of the structure of a liquid cooling kit in a high-power liquid cooling terminal provided in Example 1;

[0033] Figure 6 A schematic diagram of the exploded structure of the high-power liquid-cooled terminal provided in Example 1;

[0034] Figure 7 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0035] Figure 8 A schematic diagram of the structure of the plug-in terminal in the high-power liquid-cooled terminal provided in Example 1;

[0036] Fig. 9 This is a schematic diagram of the clamping connection between the anti-rotation surface on the plug-in body and the boss of the liquid cooling kit in the high-power liquid-cooled terminal provided in Example 1.

[0037] Illustration Description:

[0038] 1. Plug terminal; 11. Welding plate; 12. Plug body; 121. Second sealing groove; 122. Anti-rotation surface; 123. Third fixing hole; 13. Second sealing ring; 2. Liquid cooling unit; 21. Liquid cooling pipe; 22. Liquid cooling kit; 221. Placement cavity; 222. Top end; 223. Bottom end; 224. Avoidance groove; 225. Plug port; 2251. First fastening thread; 226. Liquid inlet port; 2261. Third fastening thread; 227. Abutment hole; 228. Boss; 229. Fourth fixing hole; 220. Abutment portion; 2201. Fitting groove; 2 3. Fastening sleeve; 231. Second fastening thread; 24. Liquid pipe joint; 25. Sealing assembly; 251. First sealing member; 2511. First sealing groove; 2512. Partition; 252. First sealing ring; 253. Second sealing member; 2531. Snap-fit ​​portion; 3. Conductor terminal; 4. Snap ring assembly; 41. Snap ring; 411. First fastening portion; 412. First fixing hole; 413. Second fastening portion; 4131. Columnar protrusion; 4132. Baffle; 4133. Slideway; 414. Second fixing hole; 42. First fastener; 43. Second fastener. DETAILED DESCRIPTION

[0039] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0041] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0042] Example 1

[0043] Please refer to Figure 1-Figure 2 , an embodiment of the present invention provides a high-power liquid-cooled terminal, the high-power liquid-cooled terminal comprising: a plug-in terminal 1, a liquid-cooling unit 2 and at least one conductor terminal 3;

[0044] The liquid cooling unit 2 includes a liquid cooling kit 22 and at least two liquid cooling tubes 21; the liquid cooling kit 22 is provided with a placement cavity 221, the plug-in terminal 1 is inserted into the placement cavity 221 from the bottom end 223 of the liquid cooling kit 22, and one end of the conductor terminal 3 passes through one of the liquid cooling tubes 21 and is inserted into the placement cavity 221 to be electrically connected with the plug-in terminal 1;

[0045] The liquid cooling tube 21 is connected to the placement cavity 221 at the top end 222 of the liquid cooling kit 22 , and the liquid cooling tube 21 is used to inject liquid into the placement cavity 221 .

[0046] Specifically, a portion of the plug terminal 1 is inserted into the liquid cooling unit 2 from the bottom of the liquid cooling unit 2, and a portion of the conductor terminal 3 is inserted into the liquid cooling unit 2 from the top of the liquid cooling unit 2. The plug terminal 1 is a structure in the charging gun connector for connecting an external power source. The plug terminal 1 is generally configured to be inserted from the tail end of the charging gun connector. The conductor terminal 3 is generally provided at the gun head of the charging gun connector. The conductor terminal 3 is used to be electrically connected to the plug terminal 1 and when the gun head is inserted into the device to be charged, the current on the plug terminal 1 is transmitted to the device to be charged through the conductor terminal 3.

[0047] The bottom end 223 of the liquid cooling kit 22 is provided with a circular plug-in port for inserting the plug-in terminal 1. First, the plug-in terminal 1 and the conductor terminal 3 are welded and connected, and the liquid cooling tube 21 and the liquid cooling kit 22 are connected and installed. Then, the welded plug-in terminal 1 and the conductor terminal 3 are inserted from the plug-in port of the bottom end 223, and the end of the conductor terminal 3 away from the welding is allowed to pass through the liquid cooling tube 21.

[0048] The liquid cooling tube 21 is connected to the placement cavity 221 at the top end 222 of the liquid cooling kit 22; at least one of the liquid cooling tubes 21 is used to inject liquid into the placement cavity 221, and at least another of the liquid cooling tubes 21 is used to drain the liquid in the placement cavity 221.

[0049] Preferably, a liquid cooling terminal comprises a conductor terminal 3 and two liquid cooling tubes 21: a first liquid cooling tube and a second liquid cooling tube, wherein the first liquid cooling tube is inserted from the top end 222 of the liquid cooling kit 22 and connected to the placement cavity 221; the conductor terminal 3 is built into the pipe of the second liquid cooling tube, and one end is built into the placement cavity 221 and electrically connected to the plug-in terminal 1, and the second liquid cooling tube is connected to the placement cavity 221. Liquid for cooling is injected into the first liquid cooling tube, and the liquid enters the placement cavity 221 through the first liquid cooling tube and contacts the plug-in terminal 1 and the conductor terminal 3, and the liquid flows out of the second liquid cooling tube and absorbs the heat generated by the conductor terminal 3 in the second liquid cooling tube, thereby completing the effective cooling of the conductor terminal 3 and the electrical connection position between the conductor terminal 3 and the welding.

[0050] Preferably, the liquid cooling terminal comprises at least two conductor terminals 3 and three liquid cooling tubes 21: a third liquid cooling tube, a fourth liquid cooling tube and a fifth liquid cooling tube. The third liquid cooling tube is inserted from the top 222 of the liquid cooling kit 22 into the connecting placement cavity 221. The two conductor terminals 3 are respectively built into the pipes of the fourth liquid cooling tube and the fifth liquid cooling tube, and one end is built into the placement cavity 221 and electrically connected with the plug-in terminal 1. The conductor terminal 3 and the plug-in terminal 1 are electrically connected and fixed by welding, and the pipes of the fourth liquid cooling tube and the fifth liquid cooling tube are connected with the placement cavity 221. Liquid for cooling is injected into the third liquid cooling tube, and the liquid enters the placement cavity 221 through the third liquid cooling tube and contacts the plug-in terminal 1 and the conductor terminal 3. The liquid flows out from the fourth liquid cooling tube and the fifth liquid cooling tube, and absorbs the heat generated by the conductor terminal 3 in the fourth liquid cooling tube and the fifth liquid cooling tube, thereby completing the effective cooling of the conductor terminal 3 and the electrical connection position between the conductor terminal 3 and the welding.

[0051] In the high-power liquid-cooled terminal provided in this embodiment, the transmission of high-power current can be achieved by setting the number of conductor terminals 3. At the same time, in the charging gun connector using the high-power liquid-cooled terminal provided by the present invention, the number of high-power liquid-cooled terminals is set according to demand to achieve the desired high-power current transmission.

[0052] The high-power liquid-cooled terminal provided in this embodiment realizes the transmission of current and effectively cools the conductor by setting the high-power liquid-cooled terminal. Each high-power liquid-cooled terminal includes a plug-in terminal 1, a liquid-cooling unit 2 and at least one conductor terminal 3. The liquid-cooling unit 2 includes a liquid-cooling kit 22 and at least two liquid-cooling tubes 21. The plug-in terminal 1 and the conductor terminal 3 are electrically connected in the placement cavity 221 of the liquid-cooling kit 22. Liquid for cooling is injected into the placement cavity 221 through the liquid-cooling tube 21, and the liquid in the placement cavity 221 is then led out from another liquid-cooling tube 21, so as to realize effective cooling of the conductor terminal 3 in the liquid-cooling tube 21 and the electrical position of the plug-in terminal 1 and the plug-in terminal 1.

[0053] At the same time, the number of conductor terminals 3 is selected according to the demand for charging power, so that high-power charging can be achieved according to the needs of users. The liquid cooling kit 22 and the liquid cooling tube 21 can inject the liquid used for cooling into the placement cavity 221 and at the same time drain the liquid in the placement cavity 221, which can effectively take away the heat generated by the electrical connection between the conductor terminal 3 and the plug-in terminal 1 in the placement cavity 221 and protect the charging gun.

[0054] In one embodiment, if Figure 1-Figure 5 As shown, the high-power liquid-cooling terminal further includes: a clamping ring assembly 4, the clamping ring assembly 4 is clamped on the outer wall of the liquid-cooling kit 22 and fixedly connects the liquid-cooling kit 22 with other structures;

[0055] The clamping ring assembly 4 includes a clamping ring 41 and a first fastener 42. The clamping ring 41 is clamped with the liquid cooling kit 22. Both ends of the clamping ring 41 are respectively provided with a protruding first fastening portion 411, and a penetrating first fixing hole 412 is provided in the first fastening portion 411. One end of the first fastener 42 passes through the first fixing hole 412 and is fixedly connected to other structures.

[0056] Specifically, the clamping ring assembly 4 is fixedly connected to the liquid cooling kit 22, and is also fixedly connected to other structures in the charging gun connector, thereby fixing the position of the liquid cooling kit 22 in the charging gun connector and preventing the liquid cooling kit 22 from shaking in the charging gun connector and affecting the charging effect.

[0057] The clamping ring 41 is an annular structure with an opening, and the inner side profile of the clamping ring 41 matches the outer wall profile of the liquid kit, so that the inner side of the clamping ring 41 can fit the outer wall of the liquid cooling kit 22. Enlarged and protruding first fastening parts 411 are respectively provided at both ends of the opening of the clamping ring 41. In a direction perpendicular to the surface of the clamping ring 41, a first fixing hole 412 is provided through the first fastener 42, and the first fastener 42 passes through the first fixing hole 412 and is fixed to other structures in the charging gun connector to fix the clamping ring 41 at a preset position in the connector. By providing the first fixing hole 412 in the enlarged and protruding first fastening part 411, it is possible to ensure that the first fastening part 411 has sufficient strength when the high-power liquid cooling terminal shakes, so as to prevent the cracking of the clamping ring 41 from affecting the connection of the liquid cooling kit 22 in the connector.

[0058] During installation, first install the plug-in terminal 1 and the conductor terminal 3 in the liquid cooling kit 22, then insert the liquid cooling kit 22 into the clamping ring 41, so that the inner side of the clamping ring 41 fits with the outer wall of the liquid cooling kit 22, and then fix the clamping ring 41 to the preset position of the connector through the first fastener 42 through the first fixing hole 412, so as to realize the installation of the high-power liquid cooling terminal in the connector.

[0059] In one embodiment, if Figure 1-Figure 5 As shown, the clamping ring 41 is provided with a second fastening portion 413, the second fastening portion 413 includes a cylindrical protrusion 4131 and a baffle 4132, a second fixing hole 414 is provided on the cylindrical protrusion 4131, the baffle 4132 is provided on a side of the clamping ring 41 away from the cylindrical protrusion 4131; a slideway 4133 is provided on a side of the baffle 4132 facing the center;

[0060] The outer wall of the liquid cooling kit 22 is provided with a avoidance groove 224, the slide 4133 is connected to the second fixing hole 414, one end of a second fastener 43 is inserted from the second fixing hole 414 and placed between the slide 4133 and the liquid cooling kit 22, and the other end of the second fastener 43 is embedded in the avoidance groove 224.

[0061] Specifically, the second fastening portion 413 is arranged at the middle position of the clamping ring 41, and the distance between the second fastening portion 413 and the first fasteners 42 at both ends of the opening is the same. The second fastening portion 413 includes a cylindrical protrusion 4131 that is vertically protruded from the surface of the clamping ring 41, and a second fixing hole 414 is penetrated through the cylindrical protrusion 4131. The second fastening portion 413 also includes a baffle 4132 arranged on the other surface, and a slide 4133 is arranged on the inner side of the baffle 4132 that is vertically disposed on the surface of the clamping ring 41. The slide 4133 is connected to the second fixing hole 414, so that one end of the second fastener 43 passes through the second fixing hole 414 and reaches the slide 4133.

[0062] By providing the avoidance groove 224 on the outer wall of the liquid cooling kit 22, the second fastener 43 will not interfere with the liquid cooling kit 22 when installed in the second fixing hole 414. At the same time, by confirming the positions of the avoidance groove 224 and the second fastening portion 413, the liquid cooling kit 22 can be quickly and accurately matched with the clamping ring 41 for installation.

[0063] The first fastener 42 and the second fastener 43 are preferably bolts.

[0064] Preferably, an outwardly extending abutment portion 220 is provided on the outer wall of the bottom end 223 of the liquid cooling kit 22, and the abutment portion 220 and the clamping ring 41 are fitted and abutted in a direction perpendicular to the surface of the clamping ring 41. When the first fastener 42 and the second fastener 43 respectively pass through the first fixing hole 412 and the second fixing hole 414 to fix the clamping ring 41 in the connector, the abutment portion 220 and the clamping ring 41 can be abutted to prevent the clamping ring 41 from sliding up and down the outer wall of the liquid cooling kit 22.

[0065] The abutment portion 220 is provided with an engagement groove 2201 for engaging with the first fastening portion 411 and the second fastening portion 413, so as to prevent the existence of the first fastening portion 411 and the second fastening portion 413 from affecting the close fit between the abutment portion 220 and the surface of the clamping ring when the abutment portion 220 abuts against the surface of the clamping ring. At the same time, when the liquid cooling kit 22 is installed on the clamping ring 41, the avoidance groove 224 and the engagement groove 2201 can quickly match the installation positions of the clamping ring 41 and the liquid cooling kit 22.

[0066] In one embodiment, if Figure 1 , Figure 2 , Figure 5and Figure 6 As shown, the top end 222 is provided with at least one plug port 225 and a liquid inlet port 226, the plug port 225 is used for inserting the conductor terminal 3 and the liquid cooling tube 21, the plug port 225 is provided with a first fastening thread 2251 on the outside and is threadedly tightened with a fastening sleeve 23 with a second fastening thread 231 on the inner wall;

[0067] A third fastening thread 2261 is provided in the liquid inlet port 226 , one end of the liquid cooling tube 21 is connected to a liquid pipe joint 24 and inserted into the liquid inlet port 226 , and the liquid pipe joint 24 and the liquid inlet port 226 are tightened and connected via the third fastening thread 2261 .

[0068] Specifically, the outer wall of the plug port 225 is provided with a first fastening thread 2251, and the inner wall of the fastening sleeve 23 is provided with a second fastening thread 231, and the conductor terminal 3 and the liquid cooling tube 21 in the plug port 225 are fixed by screwing; the liquid inlet port 226 is provided with a third fastening thread 2261, and one end of the liquid cooling tube 21 is connected through the liquid pipe joint 24 and inserted into the liquid inlet port 226, and the liquid pipe joint 24 and the liquid inlet port 226 are tightened and connected by the third fastening thread 2261 to ensure sealing and stability. The liquid pipe joint 24 is an existing structure, and the connection between the liquid pipe joint 24 and the third fastening thread 2261 is an existing structure, which will not be elaborated in detail here.

[0069] The liquid inlet port 226 is only used for installing the liquid cooling tube 21, and the liquid for cooling is injected into the liquid cooling kit 22 through the liquid cooling tube 21. The liquid cooling tube 21 and the conductor terminal 3 placed in the liquid cooling tube 21 are inserted into the plug port 225. There is a flow channel for liquid cooling to flow out between the liquid cooling tube 21 and the conductor terminal 3, so that the liquid in the placement cavity 221 can flow outward between the liquid cooling tube 21 and the conductor terminal 3.

[0070] In one embodiment, if Figure 2 , Figure 5 , Figure 6 As shown, abutment hole 227 is provided in the plug port 225, and two ends of the abutment hole 227 are connected to the plug port 225 and the placement cavity 221 respectively;

[0071] One end of the conductor terminal 3 passes through the plug port 225 and the abutment hole 227 in sequence and enters the placement cavity 221 to be electrically connected to the plug terminal 1. The liquid cooling tube 21 is sleeved outside the conductor terminal 3 and one end is placed in the plug port 225.

[0072] The diameter of the liquid cooling tube 21 is smaller than the diameter of the abutment hole 227 and smaller than the diameter of the plug port 225 .

[0073] Specifically, the liquid cooling tube 21 is sleeved on the outside of the conductor terminal 3 to ensure that the cooling liquid can directly contact the conductor terminal 3, effectively take away the heat, and improve the cooling efficiency.

[0074] The diameter of the liquid cooling tube 21 is smaller than the diameter of the abutment hole 227 and smaller than the diameter of the plug-in port 225, which can ensure that the liquid cooling tube 21 can be inserted into the plug-in port 225 but will not enter the placement cavity 221 through the abutment hole 227, making it convenient for the liquid in the placement cavity 221 to flow into the liquid cooling tube 21 through the abutment hole 227, thereby effectively taking away the heat generated by the conductor terminal 3 in the liquid cooling tube 21.

[0075] In one embodiment, if Figure 2 and Figure 7 As shown, the liquid cooling unit 2 also includes a sealing assembly 25, and the sealing assembly 25 includes a first sealing member 251 and a first sealing ring 252. The first sealing member 251 is a hollow columnar structure, and the outer wall of one end of the first sealing member 251 abutting against the abutting hole 227 is provided with a first sealing groove 2511, and the first sealing ring 252 is installed in the first sealing groove 2511. The other end of the first sealing member 251 is embedded between the liquid cooling tube 21 and the conductor terminal 3.

[0076] Specifically, one end of the first sealing member 251 abuts against the end surface of the abutting hole 227, and a partition 2512 is provided on the side wall of the end, a first sealing groove 2511 is provided between two adjacent partitions 2512, and a first sealing ring 252 is installed in the first sealing groove 2511 to prevent the liquid used for cooling from flowing out from between the first sealing member 251 and the inner wall of the plug port 225. The other end of the first sealing member 251 is embedded between the liquid cooling tube 21 and the conductor terminal 3, so that the liquid flowing out of the abutting hole 227 flows into the liquid cooling tube 21 through the first sealing member 251.

[0077] The gap between the first seal 251 and the inner wall of the plug terminal 1 is reduced by the partition 2512, so that the partition 2512 can fit closely with the inner wall of the plug terminal 1. At the same time, the first sealing ring 252 is installed in the first sealing groove 2511, which further strengthens the sealing strength between the first seal 251 and the plug port 225, and prevents liquid from flowing out from between the first seal 251 and the inner wall of the plug port 225; the other end of the first seal 251 is embedded between the liquid cooling tube 21 and the conductor terminal 3 to ensure that there is no gap between the seal and the liquid cooling tube 21 and the conductor terminal 3. Use the fastening sleeve 23 to tighten the plug port 225 from the outside to ensure that the conductor terminal 3, the liquid cooling tube 21 and the sealing assembly 25 are firmly fixed.

[0078] In another embodiment, if Figure 2 and Figure 7As shown, the sealing assembly 25 further includes a second sealing member 253, which is a hollow structure. One end of the second sealing member 253 away from the first sealing member 251 extends outward to form a clamping portion 2531, and the clamping portion 2531 abuts against the end surface of the plug port 225. The diameter of the other end of the second sealing member 253 is smaller than the diameter of the clamping portion 2531 and larger than the diameter of the liquid cooling tube 21. The second sealing member 253 is inserted into the plug-in port 225, and one end of the liquid cooling tube 21 passes through the second sealing member 253, that is, the second sealing member 253 is arranged between the liquid cooling tube 21 and the inner wall of the plug-in port 225. The second sealing member 253 secures the stable connection between the liquid cooling tube 21 and the plug-in port 225 to prevent the liquid cooling tube 21 from slipping out of the plug-in port 225. At the same time, the second sealing member 253 can generate an inward squeezing force on the liquid cooling tube 21, so that the liquid cooling tube 21 and the first sealing member 251 are more closely fitted to prevent liquid from flowing out from between the liquid cooling tube 21 and the first sealing member 251.

[0079] In one embodiment, if Figure 2 As shown, the plug terminal 1 includes a welding plate 11 and a plug body 12, and the welding plate 11 is arranged on the end surface of the plug body 12;

[0080] The plug-in body 12 is used to be inserted into the placement cavity 221 . The plug-in body 12 is provided with a second sealing groove 121 . A second sealing ring 13 is embedded in the second sealing groove 121 .

[0081] Specifically, the welding plate 11 is a block structure, and the welding plate 11 and the plug body 12 are integrally arranged. The conductor terminal 3 is welded to the surface of the welding plate 11. The plug body 12 is a cylindrical structure, and a second sealing groove 121 is arranged on its side wall. A second sealing ring 13 is installed in the second sealing groove 121 to prevent the liquid in the placement cavity 221 from flowing out from between the liquid cooling kit 22 and the plug body 12.

[0082] In one embodiment, if Figure 5 , Figure 8 and Fig. 9 As shown, the side wall of the plug body 12 is recessed inward to form an anti-rotation surface 122;

[0083] The inner wall of the liquid cooling kit 22 is provided with an inwardly protruding boss 228 , and the boss 228 is used to engage with the anti-rotation surface 122 to locate the installation position of the liquid cooling kit 22 and the plug-in terminal 1 .

[0084] Specifically, the plane formed by the inward depression of the side wall of the plug body 12 is engaged with the boss 228 protruding from the inner wall of the liquid cooling kit 22, ensuring that the installation position of the liquid cooling kit 22 and the plug terminal 1 is accurate, while preventing the plug terminal 1 and the liquid cooling kit 22 from rotating after correct installation. The engagement of the anti-rotation surface 122 and the boss 228 ensures that the installation position of the liquid cooling kit 22 and the plug terminal 1 is accurate, avoiding poor connection or leakage caused by position deviation. At the same time, the installation efficiency is improved and the possibility of installation errors is reduced.

[0085] In one embodiment, if Figure 5 and Figure 8 As shown, a third fixing hole 123 is provided in the plug-in body 12;

[0086] A fourth fixing hole 229 is disposed at the bottom end 223 of the liquid cooling kit 22 , and a fixing member passes through the fourth fixing hole 229 and enters the third fixing hole 123 to fix the clamping ring assembly 4 to the liquid cooling kit 22 .

[0087] Specifically, in the length direction of the plug terminal 1 , a third fixing hole 123 is provided on the side wall of the plug body 12 , and the third fixing hole 123 is preferably provided below the anti-rotation surface 122 .

[0088] An engaging groove 2201 for engaging the second fastening portion 413 is provided at the abutting portion 220 below the avoidance groove 224 of the liquid cooling kit 22, and the fourth fixing hole 229 is provided at the bottom of the engaging groove 2201 and penetrates the liquid cooling kit 22. A fixing member passes through the fourth fixing hole 229 and penetrates into the third fixing hole 123 to fix the plug-in terminal 1 of the liquid cooling kit 22 to prevent the plug-in terminal 1 from shaking in the liquid cooling kit 22 and affecting the charging effect of the connector.

[0089] A second sealing ring 13 is disposed between the third fixing hole 123 and the anti-rotation surface 122 to prevent the liquid in the placement cavity 221 from flowing out from the fourth fixing hole 229 .

[0090] Example 2

[0091] Based on the high-power liquid-cooled terminal described in the above embodiment 1, embodiment 2 of the present invention provides a connector, which includes at least one high-power liquid-cooled terminal described in the above embodiment 1. The connector is used to connect a power source to transmit the power source to a device to be charged, and the device to be charged includes an electric vehicle, etc. In the connector, the number of the high-power liquid-cooled terminals is set according to the power demand. When the power demand is small, one high-power liquid-cooled terminal is selected to be installed in the connector. When the power demand is large, two or more high-power liquid-cooled terminals are set in the connector according to the demand.

[0092] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-power liquid-cooled terminal, characterized in that: The high-power liquid cooling terminal comprises: a plug terminal (1), a liquid cooling unit (2) and at least one conductor terminal (3); a portion of the plug terminal (1) is inserted into the liquid cooling unit (2) from below, and a portion of the conductor terminal (3) is inserted into the liquid cooling unit (2) from above; the plug terminal (1) is inserted from the rear end of the charging gun connector, and the conductor terminal (3) is arranged on the gun head of the charging gun connector, and the conductor terminal (3) is used to be electrically connected to the plug terminal (1) and when the gun head is inserted into the device to be charged, the current on the plug terminal (1) is transmitted to the device to be charged through the conductor terminal (3); The liquid cooling unit (2) comprises a liquid cooling kit (22) and at least two liquid cooling tubes (21); the liquid cooling kit (22) is provided with a placement cavity (221), and the plug-in terminal (1) is inserted from the bottom end (223) of the liquid cooling kit (22) and placed in the placement cavity (221); wherein at least one of the liquid cooling tubes (21) is a first liquid cooling tube, and at least another of the liquid cooling tubes (21) is a second liquid cooling tube; the first liquid cooling tube is inserted from the top end (222) of the liquid cooling kit (22) and communicates with the placement cavity (221) for injecting liquid into the placement cavity (221); the second liquid cooling tube is communicated with the placement cavity (221) for discharging liquid; One end of the conductor terminal (3) passes through a liquid cooling tube (21) and is inserted into the placement cavity (221) to be electrically connected to the plug-in terminal (1); wherein the number of the conductor terminals (3) is selected according to the demand for charging power.

2. The high-power liquid-cooled terminal according to claim 1, characterized in that: The high-power liquid-cooling terminal further comprises: a clamping ring assembly (4), the clamping ring assembly (4) being clamped onto the outer wall of the liquid-cooling kit (22) and fixedly connecting the liquid-cooling kit (22) to other structures; The clamping ring assembly (4) comprises a clamping ring (41) and a first fastener (42), the clamping ring (41) being clamped to the liquid cooling kit (22), the two ends of the clamping ring (41) being respectively provided with a protruding first fastening portion (411), and the first fastening portion (411) being provided with a penetrating first fixing hole (412), one end of the first fastener (42) passing through the first fixing hole (412) and being fixedly connected to other structures.

3. The high-power liquid-cooled terminal according to claim 2, characterized in that: A second fastening portion (413) is provided on the clamping ring (41), the second fastening portion (413) comprising a cylindrical protrusion (4131) and a baffle (4132), a second fixing hole (414) penetrating the cylindrical protrusion (4131) is provided, the baffle (4132) is provided on a side of the clamping ring (41) away from the cylindrical protrusion (4131); a slideway (4133) is provided on a side of the baffle (4132) facing the center; The outer wall of the liquid cooling kit (22) is provided with a avoiding groove (224), the slideway (4133) is connected to the second fixing hole (414), one end of a second fastener (43) passes through the second fixing hole (414) and is placed between the slideway (4133) and the liquid cooling kit (22), and the other end of the second fastener (43) is embedded in the avoiding groove (224).

4. The high-power liquid-cooled terminal according to claim 3, characterized in that: The top end (222) is provided with at least one plug port (225) and a liquid inlet port (226); the plug port (225) is used for inserting the conductor terminal (3) and the liquid cooling tube (21); the plug port (225) is provided with a first fastening thread (2251) on the outside and is threadedly screwed to a fastening sleeve (23) whose inner wall is provided with a second fastening thread (231); A third fastening thread (2261) is provided in the liquid inlet port (226); one end of the liquid cooling tube (21) is connected to a liquid pipe joint (24) and inserted into the liquid inlet port (226); the liquid pipe joint (24) and the liquid inlet port (226) are screwed together via the third fastening thread (2261).

5. The high-power liquid-cooled terminal according to claim 4, characterized in that: An abutment hole (227) is provided in the plug port (225), and two ends of the abutment hole (227) are respectively connected to the plug port (225) and the placement cavity (221); One end of the conductor terminal (3) passes through the plug port (225) and the abutment hole (227) in sequence and enters the placement cavity (221) to be electrically connected to the plug terminal (1); the liquid cooling tube (21) is sleeved outside the conductor terminal (3) and one end is placed inside the plug port (225); Wherein, the diameter of the liquid cooling tube (21) is smaller than the diameter of the abutment hole (227), which is smaller than the diameter of the plug port (225).

6. The high-power liquid-cooled terminal according to claim 5, characterized in that: The liquid cooling unit (2) further comprises a sealing assembly (25), wherein the sealing assembly (25) comprises a first sealing member (251) and a first sealing ring (252), wherein the first sealing member (251) is a hollow columnar structure, wherein an outer wall of one end of the first sealing member (251) abutting against the abutting hole (227) is provided with a first sealing groove (2511), wherein the first sealing ring (252) is installed in the first sealing groove (2511), and the other end of the first sealing member (251) is embedded between the liquid cooling tube (21) and the conductor terminal (3).

7. The high-power liquid-cooled terminal according to claim 6, characterized in that: The plug-in terminal (1) comprises a welding plate (11) and a plug-in body (12); the welding plate (11) is arranged on the end surface of the plug-in body (12); The plug-in body (12) is used to be inserted into the placement cavity (221); the plug-in body (12) is provided with a second sealing groove (121); and a second sealing ring (13) is embedded in the second sealing groove (121).

8. The high-power liquid-cooled terminal according to claim 7, characterized in that: The side wall of the plug-in body (12) is recessed inwardly to form an anti-rotation surface (122); An inwardly protruding boss (228) is provided on the inner wall of the liquid cooling kit (22), and the boss (228) is used to engage with the anti-rotation surface (122) to locate the installation position of the liquid cooling kit (22) and the plug-in terminal (1).

9. The high-power liquid-cooled terminal according to claim 8, characterized in that: A third fixing hole (123) is provided on the plug-in body (12); The bottom end (223) is provided with a fourth fixing hole (229), and a fixing member passes through the fourth fixing hole (229) and enters the third fixing hole (123) to fix the clamping ring assembly (4) and the liquid cooling kit (22).

10. A connector, characterized in that: The connector comprises at least one high-power liquid-cooled terminal as described in any one of claims 1 to 9.

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