Liquid cooling connecting component and charging gun

Abstract

The utility model discloses a liquid cooling connecting member and a charging gun. The liquid cooling connecting component comprises a plug terminal, a connecting terminal and a plurality of liquid cooling wires. The plug terminal is provided with a cavity and a plurality of connecting pipes communicated with the cavity, and each connecting pipe is communicated with one end of one liquid cooling wire. The connecting terminal is provided with a plurality of inner cavities, through pipes and through holes, the through pipes and the through holes are communicated with the inner cavities, and each through pipe is communicated with the other end of the corresponding liquid cooling wire, so that a cooling flow path is formed. According to the technical scheme, the cooling efficiency and the conductive efficiency of the connecting terminal are improved, and the connecting terminal is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle charging, in particular to a liquid cooling connection component and a charging gun. Background Art

[0002] With the rapid development of new energy vehicles, how to efficiently and quickly transmit large currents has become an urgent problem to be solved. However, in the process of transmitting large currents, a large amount of heat will be generated at the terminal connection, resulting in reduced cooling efficiency and conductive efficiency of the connection terminals. At the same time, due to the complexity of the connection terminal structure, it is not convenient to disassemble, assemble and repair. Utility Model Content

[0003] The main purpose of the utility model is to provide a liquid-cooled connecting component and a charging gun, which aims to improve the cooling efficiency and conductive efficiency of the connecting terminal while reducing the structural complexity of the connecting terminal to facilitate disassembly, assembly and maintenance.

[0004] To achieve the above-mentioned purpose, the utility model proposes a liquid-cooling connection component, which includes a plug-in terminal, a connection terminal and a plurality of liquid-cooling wires:

[0005] The plug terminal has a cavity and a plurality of connecting tubes connected to the cavity, and each of the connecting tubes is connected to one end of a liquid-cooling wire;

[0006] The connection terminal has a plurality of inner cavities and through tubes and through holes communicating with the inner cavities. Each of the through tubes is communicated with the other end of a liquid cooling wire, thereby forming a cooling flow path.

[0007] In one embodiment, the liquid cooling wire includes a power line and a liquid cooling tube, the power line is inserted into the liquid cooling tube, and a cooling channel is formed between the power line and the liquid cooling tube.

[0008] In one embodiment, the plug-in terminal comprises a plug-in portion and a connector portion, wherein the plug-in portion comprises a plug pin and a connection base connected to the plug pin;

[0009] The joint part comprises a cooling shell, a groove is arranged on the cooling shell, and the connecting base covers the notch of the groove to form the cavity.

[0010] In one embodiment, a connecting portion is further provided on a side of the connecting base away from the plug pin, the connecting portion extends toward a side away from the plug pin and extends into the groove, and the power line passes through the connecting tube to be connected to the connecting portion.

[0011] In one embodiment, the liquid cooling pipe is sleeved on the outer wall of the connecting pipe to communicate with the liquid cooling pipe.

[0012] In one embodiment, the notch is provided with a protruding base;

[0013] A sealing gasket is also provided between the connecting base and the base;

[0014] And / or the base is provided with a connecting hole, and the fastener passes through the connecting hole to be connected to the connecting base.

[0015] In one embodiment, the connecting terminal includes a conductive piece and a plurality of connecting pieces, the connecting piece is provided with an inner cavity, and a through pipe is provided at one end of the connecting piece facing the liquid cooling tube; a conductive piece is provided between the plurality of connecting pieces, and the plurality of connecting pieces are conductively connected to each other through the conductive piece.

[0016] In one embodiment, the connector is further provided with a crimping hole, the crimping hole is communicated with the inner cavity, the power line passes through the through tube and the inner cavity to be crimped with the crimping hole, and the diameter of the crimping hole is smaller than the diameter of the inner cavity;

[0017] And / or one end of the liquid cooling pipe is sleeved on the outer wall of the through pipe to communicate with the through pipe.

[0018] In one embodiment, a plurality of the connecting pipes are arranged vertically, and a plurality of the connecting members are arranged vertically.

[0019] The utility model also provides a charging gun, comprising a shell and the multiple liquid-cooling connecting components, wherein the multiple liquid-cooling connecting components are arranged horizontally.

[0020] The liquid-cooling connection component of a technical solution of the utility model includes a plug-in terminal, a connecting terminal and a plurality of liquid-cooling wires; the plug-in terminal has a cavity and a plurality of connecting tubes connected to the cavity, and each of the connecting tubes is connected to one end of a liquid-cooling wire; the connecting terminal has a plurality of inner cavities and through tubes and through holes connected to the inner cavities, and each of the through tubes is connected to the other end of a liquid-cooling wire, thereby forming a cooling flow path. In this arrangement, each plug-in terminal and each connecting terminal are connected through a plurality of liquid-cooling wires, and a liquid-cooling wire is split into a plurality of liquid-cooling wires, thereby improving the cooling efficiency and the conduction efficiency between the entire liquid-cooling connection component. At the same time, the connection method of the plurality of liquid-cooling wires at the plug-in terminal and the connecting terminal is improved, which further improves the cooling efficiency and the conduction efficiency while also improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 Schematic diagram of the structure of the liquid cooling connection component of this embodiment.

[0023] Figure 2 It is a schematic diagram of the structure of the connection between the plug-in terminal and the liquid-cooling wire in this embodiment.

[0024] Figure 3 It is an exploded view of the plug terminal of this embodiment.

[0025] Figure 4 FIG. 4 is an exploded view of the connection terminal of this embodiment.

[0026] Figure 5 It is a schematic structural diagram of multiple liquid-cooling connection components in this embodiment.

[0027] Figure 6 for Figure 5 main view.

[0028] Figure 7 for Figure 6 Schematic diagram of the cross section at AA in the middle.

[0029] Figure 8 It is an exploded view of multiple liquid-cooling connection components in this embodiment.

[0030] Description of Figure Numbers:

[0031] 100, liquid cooling connection member; 1, plug terminal; 11, plug part; 111, pin; 1111, finger protection; 1112, mounting hole; 112, connection base; 1121, connection part; 1122, connection bottom surface; 12, joint part; 121, cooling shell; 1211, base; 1212, assembly surface; 1213, connection hole; 122, connection pipe; 123, cavity; 124, groove; 125, fastener; 126, locking part; 127. Sealing gasket; 2. Connecting terminal; 21. Connecting piece; 211. Connecting head; 2111. Through pipe; 2112. Through hole; 212. Conductive part; 2121. First plane; 2122. Second plane; 2123. First hole; 213. Adapter; 214. Fastening part; 215. Inner cavity; 216. Locking piece; 22. Conducting piece; 221. Second hole; 3. Liquid-cooling wire; 31. Power line; 32. Liquid-cooling pipe; 33. Cooling channel.

[0032] 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

[0033] 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.

[0034] 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.

[0035] In addition, the descriptions of "first", "second", etc. in the present utility model 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, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies 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.

[0036] With the rapid development of new energy vehicles, how to efficiently and quickly transmit large currents has become an urgent problem to be solved. However, in the process of transmitting large currents, a large amount of heat will be generated at the terminal connection, resulting in reduced cooling efficiency and conductive efficiency of the connection terminals. At the same time, due to the complexity of the connection terminal structure, it is not convenient to disassemble, assemble and repair.

[0037] In view of this, the present invention proposes a liquid cooling connection component 100 .

[0038] In the embodiment of the present utility model, refer to Figures 1 to 8 The liquid-cooling connection component 100 includes a plug-in terminal 1, a connection terminal 2 and a plurality of liquid-cooling wires 3; the plug-in terminal 1 has a cavity 123 and a plurality of connection tubes 122 connected to the cavity 123, each of the connection tubes 122 is connected to one end of the liquid-cooling wire 3; the connection terminal 2 has a plurality of inner cavities 215 and a through tube 2111 and a through hole 2112 connected to the inner cavity 215, each of the through tubes 2111 is connected to the other end of the liquid-cooling wire 3, thereby forming a cooling flow path.

[0039] It can be understood that the liquid-cooled connecting component 100 includes a plug-in terminal 1, one end of which is used to be plugged into an electrical device such as a charging socket to transmit power. In the process of power transmission between the plug-in terminal 1 and the charging socket, a large amount of heat will be generated, which will reduce the conductive efficiency of the conductor and bring potential safety hazards. Therefore, by connecting the other end of the plug-in terminal 1 to the liquid-cooled wire 3, the plug-in terminal 1 is cooled by the cooling medium in the liquid-cooled wire 3, so that the temperature of the plug-in terminal 1 is kept within a normal range, which not only improves the conductive efficiency but also improves safety. The power line 31 in the liquid-cooled wire 3 will also be connected to the plug-in terminal 1 to ensure power transmission. The plug terminal 1 has a cavity 123 and a plurality of connecting tubes 122 connected to the cavity 123, and each of the connecting tubes 122 is connected to one end of a liquid-cooling wire 3; in this way, the cooling medium in the liquid-cooling wire 3 can be transported to the cavity 123, and the cooling medium can absorb the heat transferred from the plug terminal 1, thereby cooling the plug terminal 1, and the cooling medium that has absorbed the heat flows out from other liquid-cooling wires 3. A connecting terminal 2 is also provided at one end of the liquid-cooling wire 3 away from the plug terminal 1, and the connecting terminal 2 has a plurality of inner cavities 215 and through tubes 2111 and through holes 2112 connected to the inner cavities 215, and each of the through tubes 2111 is connected to the other end of a liquid-cooling wire 3, thereby forming a cooling flow path. With such a configuration, the cooling medium can flow from a certain through hole 2112 into a certain inner cavity 215, and then flow into the liquid-cooling wire 3 connected to the through pipe 2111 connected to the inner cavity 215, and then flow into the cavity 123 of the plug-in terminal 1 through the connecting pipe 122 to cool it, and then the cooling medium flows out of the cavity 123 from other connecting pipes 122, and flows into the liquid-cooling wire 3 connected to other connecting pipes 122, and then flows into other inner cavities 215 from the through pipe 2111, and then flows out from the through hole 2112 connected to the inner cavity 215, thereby forming a cooling flow path, so that the cooling medium can circulate back and forth between the plug-in terminal 1 and the connecting terminal 2. Each plug-in terminal 1 and each connecting terminal 2 are connected by multiple liquid-cooling wires 3, and one liquid-cooling wire 3 is split into multiple liquid-cooling wires 3, thereby improving the cooling efficiency and conductive efficiency between the entire liquid-cooling connecting component 100. At the same time, the connection method of the plurality of liquid-cooled wires 3 at the plug-in terminal 1 and the connection terminal 2 is improved, so as to further improve the cooling efficiency and the conductive efficiency, and also improve the production efficiency.

[0040] In one embodiment, the liquid cooling wire 3 includes a power line 31 and a liquid cooling tube 32 . The power line 31 is inserted into the liquid cooling tube 32 . A cooling channel 33 is formed between the power line 31 and the liquid cooling tube 32 .

[0041] Optionally, the liquid cooling wire 3 includes a liquid cooling tube 32 and a power line 31 passing through the liquid cooling tube 32, and a cooling channel 33 is provided between the liquid cooling tube 32 and the power line 31, and a cooling medium flows through the cooling channel 33. Optionally, the number of the liquid cooling wires 3 is the same as the number of the connecting tubes 122 and the through tubes 2111.

[0042] In one embodiment, the plug-in terminal 1 includes a plug-in portion 11 and a connector portion 12, the plug-in portion 11 includes a pin 111 and a connecting base 112 connected to the pin 111; the connector portion 12 includes a cooling shell 121, the cooling shell 121 is provided with a groove 124, and the connecting base 112 covers the notch of the groove 124 to form the cavity 123.

[0043] The plug terminal 1 includes a plug part 11 and a connector part 12. The plug part 11 includes a pin 111 and a connection base 112 connected to the pin 111, wherein the pin 111 is used to be plugged with a conductive terminal in a charging socket to transmit power. The connector part 12 includes a cooling shell 121, and a groove 124 is provided on the cooling shell 121. The connection base 112 covers the notch of the groove 124 to form a cavity 123. In this way, the cooling medium can enter the cavity 123 from some connecting tubes 122 and then flow out from other connecting tubes 122. The connection base 112 and the connector part 12 are enclosed together to form the cavity 123. After the cooling medium flows into the cavity 123, it can directly cool down the connection base 112 of the plug part 11. Since the connection base 112 and the pin 111 are connected, the temperature on the pin 111 will also be absorbed by the cooling medium in the cavity 123 through the connection base 112, thereby improving the cooling efficiency and the conductive efficiency. By configuring the plug-in terminal 1 to be a split type of the plug-in portion 11 and the connector portion 12, it is convenient to connect, install and maintain each component, thereby improving production efficiency. Optionally, the number of the connecting pipes 122 may be two, in which case the cooling medium flows from one connecting pipe 122 into the cavity 123, contacts and cools the plug-in portion 11, and then flows out from another connecting pipe 122. The number of the connecting pipes 122 may also be greater than two.

[0044] Optionally, a mounting hole 1112 is further provided at one end of the pin 111 away from the connection base 112, and the plug-in portion 11 further includes a finger-proofing device 1111, which is installed in the mounting hole 1112. Optionally, an internal thread is provided on the mounting hole 1112, and an external thread corresponding to the internal thread is provided on the finger-proofing device 1111, and the finger-proofing device 1111 is connected to the mounting hole 1112 by threading.

[0045] In one embodiment, a connecting portion 1121 is further provided on a side of the connecting base 112 away from the plug pin 111 , and the connecting portion 1121 extends toward a side away from the plug pin 111 and extends into the groove 124 , and the power line 31 passes through the connecting tube 122 to be connected to the connecting portion 1121 .

[0046] It can be understood that the power line 31 can be directly connected to the connection base 112. In order to improve the stability of the connection and better cool the connection, a connection portion 1121 can be provided on the connection base 112, and the connection portion 1121 extends in a direction away from the pin 111 and extends into the cavity 123. Multiple power lines 31 pass through the corresponding connecting tubes 122 and the cavity 123 respectively to be conductively connected to the connecting portion 1121. In this way, the liquid cooling wire 3 is split into multiple wires, and the power line 31 of each liquid cooling wire 3 passes through a connecting tube 122 and the cavity 123 to be connected to the connecting portion 1121. The liquid cooling tube 32 of each liquid cooling wire 3 is connected to a connecting tube 122, so that the connection between the power line 31 and the connecting portion 1121 can fully extend into the cavity 123 and be immersed in the cooling medium, thereby improving the cooling efficiency. At the same time, the liquid cooling wire 3 is split into multiple wires, so that the spatial arrangement of the liquid cooling cable is more compact, thereby achieving the purpose of reducing the cable quality and wire diameter.

[0047] In one embodiment, the connecting portion 1121 is a metal plate, and the power line 31 and the metal plate are ultrasonically welded.

[0048] It is understandable that in order to improve the conductive efficiency, the connecting portion 1121 is a metal plate. The metal plate extends into the cavity 123, and the two sides of the metal plate with the largest area are immersed in the cooling medium, thereby increasing the contact area between the metal plate and the cooling medium and improving the cooling efficiency. The power line 31 and the metal plate can be ultrasonically welded to improve the stability of the connection between the two.

[0049] In one embodiment, the liquid cooling pipe 32 is sleeved on the outer wall of the connecting pipe 122 to communicate with the liquid cooling pipe 32 .

[0050] It can be understood that the liquid cooling tube 32 can be sleeved on the outer wall of the connecting tube 122, and the liquid cooling tube 32 and the connecting tube 122 are connected to form a liquid flow channel. In this way, the liquid cooling tube 32 in the liquid cooling wire 3 can be directly connected to the joint part 12, and the power line 31 of the liquid cooling wire 3 can pass through the connecting tube 122 and the cavity 123, and be conductively connected to the plug-in part 11. At the same time, the cooling medium in the liquid cooling cable can flow into the cavity 123 formed by the plug-in part 11 and the joint part 12, directly cooling the plug-in part 11 in the cavity 123, thereby improving the conductivity efficiency and cooling efficiency.

[0051] It is understandable that the plug terminal 1 is also provided with a locking portion 126, which is sleeved on the outer wall of the connection between the liquid cooling tube 32 and the connecting tube 122 to prevent liquid from leaking from the connection between the liquid cooling tube 32 and the connecting tube 122. Preferably, the locking portion 126 can be a cable tie, a clamp, etc., which is not limited here.

[0052] In one embodiment, a base 1211 is protruding from the groove; a sealing gasket 127 is also provided between the connecting base 112 and the base 1211; and / or a connecting hole 1213 is provided on the base 1211, and the fastener 125 passes through the connecting hole 1213 to connect with the connecting base 112.

[0053] It can be understood that the base 1211 is protruding from the notch, and by providing a sealing gasket 127 between the connecting base 112 and the base 1211 , it is possible to prevent the cooling medium from flowing out from the gap between the plug-in portion 11 and the joint portion 12 .

[0054] Optionally, an end of the base 1211 away from the connecting pipe 122 is provided with an assembly surface 1212 , and the connecting base 112 has a connecting bottom surface 1122 , and the connecting bottom surface 1122 covers the assembly surface 1212 to close the notch of the groove 124 .

[0055] It can be understood that by cooperating with the connecting bottom surface 1122 and the assembly surface 1212 , the notch of the groove 124 is closed to form a cavity 123 , thereby ensuring that the cooling medium can smoothly flow into the cavity 123 from the connecting pipe 122 and flow out of the cavity 123 from other connecting pipes 122 .

[0056] Optionally, a connection hole 1213 is provided on the base 1211 , and the fastener 125 passes through the connection hole 1213 to be connected to the connection base 112 .

[0057] It can be understood that in order to achieve the detachable connection between the plug-in portion 11 and the connector portion 12, a connection hole 1213 is provided on the base 1211, and the fastener 125 passes through the connection hole 1213 to connect with the connection base 112. Optionally, a thread groove or a threaded hole can be provided at the connection base 112 corresponding to the connection hole 1213, and the screw passes through the connection hole 1213 and is screwed into the thread groove or the threaded hole, thereby achieving the detachable connection between the plug-in portion 11 and the connector portion 12. The fastener 125 and the connection base 112 can also be fastened and connected in other ways, which are not limited here.

[0058] In one embodiment, there are two connecting pipes 122 , one of which is a liquid inlet pipe and the other is a liquid outlet pipe. The cooling medium enters the cavity 123 from the liquid inlet pipe and then flows out from the liquid outlet pipe.

[0059] It can be understood that the number of connecting tubes 122 can be two, and correspondingly, the number of liquid cooling wires 3 is also two. One of the two connecting tubes 122 is a liquid inlet tube, and the other connecting tube 122 is a liquid outlet tube. The liquid inlet tube is connected to the liquid cooling tube 32 of a liquid cooling wire 3 to transport the cooling medium in the liquid cooling tube 32 to the cavity 123. The power line 31 of the liquid cooling wire 3 passes through the liquid inlet tube and the cavity 123, and is conductively connected to the plug-in part 11. The liquid outlet tube is connected to the liquid cooling tube 32 of another liquid cooling wire 3 to output the cooling medium in the cavity 123. The power line 31 of the liquid cooling wire 3 passes through the liquid outlet tube and the cavity 123, and is conductively connected to the plug-in part 11. By setting the number of connecting tubes 122 to two, and one in and one out, the number of liquid cooling wires 3 used with the connecting tubes 122 is also two, and the liquid cooling tube 32 of each liquid cooling wire 3 is connected to the corresponding connecting tube 122, and the power line 31 of each liquid cooling wire 3 passes through the corresponding connecting tube 122 and is conductively connected to the plug-in portion 11. In this way, one liquid cooling wire 3 is split into two, making the overall cable core arrangement more compact, the space utilization rate is significantly improved, and the purpose of reducing the wire diameter and weight is achieved.

[0060] In one embodiment, the connecting terminal 2 includes a conductive member 22 and a plurality of connecting members 21, the connecting member 21 is provided with an inner cavity 215, and a through pipe 2111 is provided at one end of the connecting member 21 facing the liquid cooling tube 32; a conductive member 22 is provided between the plurality of connecting members 21, and the plurality of connecting members 21 are conductively connected to each other through the conductive member 22.

[0061] It can be understood that the connector 21 includes a connector 211 and a conductive portion 212 connected to the connector 211. An inner cavity 215 is provided inside the connector 211. A through pipe 2111 is provided at one end of the connector 211 facing the connecting tube 122, and the through pipe 2111 is connected to the inner cavity 215. A through pipe 2111 is also provided on the side of the connector 211, and the through pipe 2111 is connected to the inner cavity 215, so that the cooling medium can flow into the inner cavity 215 through the through hole 2112, and then flow into the liquid-cooling wire 3 through the through pipe 2111, or the cooling medium can flow from the liquid-cooling wire 3 into the inner cavity 215 through the through pipe 2111, and then flow out of the inner cavity 215 from the through hole 2112. The connector 21 is also provided with a conductive part 212, and the power line 31 of the liquid-cooled wire 3 is conductively connected to the conductive part 212, and a conductive part 22 is provided between the conductive parts 212 of two adjacent connectors 21, so that the power on the plug-in terminal 1 can be transmitted to a connecting terminal 2 through multiple liquid-cooled wires 3, and then further power transmission is performed through the conductive part 22. At the same time, by splitting a liquid-cooled wire 3 into multiple liquid-cooled wires 3, and transmitting power between the plug-in terminal 1 and the connecting terminal 2 through multiple liquid-cooled wires 3, not only the throughput is increased, but also the overall cable core arrangement is made more compact, the space utilization rate is significantly improved, and the purpose of reducing the wire diameter and weight is achieved.

[0062] It can be understood that the conductive member 22 is made of a metal conductive material, and the external shape of the conductive member 22 can be designed according to the need for plugging in with an external power supply component, as long as it is compatible with the corresponding external plug-in terminal. For example, a copper busbar made of copper alloy or pure copper can be used. The copper busbar can be used to connect to the plug-in element or socket of the power supply component to achieve charging, and the copper busbar has a simple structure, which reduces the production cost and process complexity of the overall structure. The copper busbar is arranged between multiple connectors 21 to achieve current conduction between the connectors 21.

[0063] In one embodiment, the other end of the liquid cooling tube 32 is sleeved on the outer wall of the through tube 2111 ; the connecting terminal 2 is further provided with a locking member 216 , which is sleeved on the outer wall of the connection between the liquid cooling tube 32 and the through tube 2111 .

[0064] It can be understood that the other end of the liquid cooling tube 32 is sleeved on the outer wall of the through tube 2111, so that the cooling medium is connected with the through tube 2111 inside the liquid cooling tube 32; it can be understood that in order to arrange the liquid cooling tube 32 on the outer peripheral surface of the through tube 2111, the inner diameter of the liquid cooling tube 32 should be greater than or equal to the outer diameter of the through tube 2111. By sleeve-connecting the liquid cooling tube 32 and the through tube 2111, the connection between the liquid cooling tube 32 and the connecting terminal 2 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 32 and the through tube 2111, a locking member 216 is provided on the outside of the connection between the liquid cooling tube 32 and the through tube 2111. It is understandable that the locking member 216 can be tied with wire or a locking and fixing method such as a nut, so that the liquid cooling tube 32 is tightly connected to the through tube 2111. Preferably, the locking member 216 is set as a steel hoop, which can be sleeved on the outer peripheral surface of the liquid cooling tube 32, so that the liquid cooling tube 32 can be tightly fixed on the outer peripheral surface of the through tube 2111 to prevent the liquid cooling tube 32 from being separated from the connecting terminal 2 after long-term use, and ensure that the cooling medium will not leak. 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 peripheral surface of the connection of the liquid cooling tube 32, and then the connection of the liquid cooling tube 32 is sleeved on the outer peripheral surface of the through tube 2111, and finally the steel hoop is compressed.

[0065] In one embodiment, the connection terminal 2 further includes an adapter 213, which is detachably connected to the through hole 2112. The adapter 213 and the through hole 2112 are separated, so that the structure and processing technology of the connection terminal 2 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 through hole 2112 is formed with an internal thread, and one end of the adapter 213 is provided with an external thread adapted to the through hole 2112, and the through hole 2112 and the adapter 213 are connected by threaded matching. The adapter 213 is connected with a pipeline (not shown) for inputting or outputting the cooling medium into or out of the inner cavity 215 of the connector 211. The adapter 213 is provided with a fastening portion 214 on the outside, and the fastening portion 214 can realize the close connection between the pipeline and the adapter 213 to prevent the cooling medium from leaking. Optionally, a sealing ring is also provided between the adapter 213 and the connector 211 to ensure the tight connection and prevent the cooling medium from leaking.

[0066] In one embodiment, the connector 21 is further provided with a crimping hole, which is connected to the inner cavity 215, and the power line 31 passes through the through tube 2111 and the inner cavity 215 to be crimped with the crimping hole, and the aperture of the crimping hole is smaller than the diameter of the inner cavity 215; and / or one end of the liquid cooling tube 32 is sleeved on the outer wall of the through tube 2111 to be connected to the through tube 2111.

[0067] It is understandable that the connector 21 is also provided with a crimping hole, which is connected to the inner cavity 215, and the power line 31 passes through the through pipe 2111 and the inner cavity 215 to be crimped with the crimping hole, and the aperture of the crimping hole is smaller than the diameter of the inner cavity 215. The crimping hole can be set as a circular hole or a square hole, which is not limited here. In practical application, it only needs to match the shape of the power line 31. It is understandable that the crimping hole is connected to the inner cavity 215, and the aperture of the crimping hole is smaller than the diameter of the inner cavity 215. Such a setting allows the cooling medium to flow into the vicinity of the crimping hole, thereby achieving cooling at the connection between the power line 31 and the crimping hole. In order to improve the connection stability between the liquid cooling tube 32 and the connector 21, one end of the liquid cooling tube 32 is sleeved on the outer wall of the through pipe 2111 to be connected to the through pipe 2111. Optionally, a locking member 216 may be provided to be sleeved on the outer wall of the connection between the liquid cooling pipe 32 and the through pipe 2111 to prevent the two from falling off. Optionally, the locking member 216 may be a cable tie, a steel hoop, etc., which is not limited here.

[0068] In one embodiment, the conductive part 212 has a first plane 2121 and a second plane 2122 perpendicular to the vertical direction, and a first hole 2123 extending from the first plane 2121 to the second plane 2122 is provided on the conductive part 212; and a second hole 221 is provided on the conductive member 22. During installation, a conductive member 22 is provided between the conductive parts 212 of two adjacent connecting members 21, and the first holes 2123 of the multiple connecting members 21 and the second holes 221 of the conductive member 22 are coaxially arranged, and the fastening device passes through the first hole 2123 and the second hole 221, so as to achieve stable and reliable electrical transmission.

[0069] In one embodiment, the plurality of connecting pipes 122 are arranged vertically, and the plurality of connecting members 21 are arranged vertically.

[0070] It can be understood that some electrical devices such as charging guns often have two pins 111, and the two pins 111 are arranged horizontally. At this time, the horizontal space in the charging gun is small. In order to reduce the volume of the charging gun, the connecting pipe 122 of each liquid-cooling connecting component 100 is arranged in a vertical direction perpendicular to the horizontal plane. At the same time, the through pipe 2111 of each liquid-cooling connecting component 100 is also arranged vertically, thereby reducing the volume of the charging gun.

[0071] In one embodiment, the liquid-cooled connecting component 100 has two liquid-cooled wires 3, and correspondingly, the number of the connector 211, the through hole 2112, the through pipe 2111, and the inner cavity 215 on the connecting terminal 2 is two, and the number of the connecting pipe 122 on the plug-in terminal 1 is also two. The cooling medium flows from a pipeline through an adapter 213 into the inner cavity 215 of a connecting member 21, and then flows from the inner cavity 215 through the through pipe 2111 into a liquid-cooled wire 3, and then flows into the cavity 123. After the cooling liquid flowing into the cavity 123 cools the plug-in part 11, it flows from another connecting pipe 122 to another liquid-cooled wire 3, and then flows into the inner cavity 215 of another connecting member 21, and then flows out from the through hole 2112 of the connecting member 21, thereby achieving cooling of the entire power line 31, the plug-in terminal 1, the power line 31 and the crimping point of the connecting member 21, and improving the cooling efficiency and the conductive efficiency.

[0072] The present utility model also proposes a charging gun, which includes a shell and a plurality of liquid-cooling connecting components 100. The specific structure of the liquid-cooling connecting components 100 refers to the above-mentioned embodiment, and the plurality of liquid-cooling connecting components 100 are arranged horizontally. Since the present charging gun adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. The above description is only an optional embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent structural changes made by using the contents of the specification and drawings of the present utility model under the conception of the present utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A liquid-cooled connecting component (100), characterized in that: The liquid-cooling connection component (100) comprises a plug-in terminal (1), a connection terminal (2) and a plurality of liquid-cooling wires (3); The plug terminal (1) has a cavity (123) and a plurality of connecting tubes (122) connected to the cavity (123), and each of the connecting tubes (122) is connected to one end of a liquid-cooling wire (3); The connecting terminal (2) has a plurality of inner cavities (215) and through tubes (2111) and through holes (2112) connected to the inner cavities (215); each of the through tubes (2111) is connected to the other end of a liquid cooling wire (3), thereby forming a cooling flow path.

2. The liquid-cooled connecting component (100) according to claim 1, characterized in that: The liquid cooling wire (3) comprises a power line (31) and a liquid cooling tube (32); the power line (31) is inserted into the liquid cooling tube (32); a cooling channel (33) is formed between the power line (31) and the liquid cooling tube (32).

3. The liquid-cooled connecting component (100) according to claim 2, characterized in that: The plug-in terminal (1) comprises a plug-in portion (11) and a connector portion (12); the plug-in portion (11) comprises a plug pin (111) and a connection base (112) connected to the plug pin (111); The joint part (12) comprises a cooling shell (121), the cooling shell (121) is provided with a groove (124), and the connecting base (112) covers the notch of the groove (124) to form the cavity (123).

4. The liquid-cooled connecting component (100) according to claim 3, characterized in that: A connecting portion (1121) is further provided on a side of the connecting base (112) away from the plug pin (111); the connecting portion (1121) extends toward the side away from the plug pin (111) and extends into the groove (124); and the power line (31) passes through the connecting tube (122) to be connected to the connecting portion (1121).

5. The liquid-cooled connecting component (100) according to claim 4, characterized in that: The liquid cooling pipe (32) is sleeved on the outer wall of the connecting pipe (122) to communicate with the liquid cooling pipe (32).

6. The liquid-cooled connecting component (100) according to claim 5, characterized in that: The notch is convexly provided with a base (1211); A sealing gasket (127) is also provided between the connecting base (112) and the base (1211); And / or the base (1211) is provided with a connection hole, and the fastener (125) passes through the connection hole to be connected to the connection base (112).

7. The liquid-cooled connecting component (100) according to claim 2, characterized in that: The connecting terminal (2) comprises a conducting member (22) and a plurality of connecting members (21); an inner cavity (215) is provided on the connecting member (21); a through pipe (2111) is provided at one end of the connecting member (21) facing the liquid cooling tube (32); a conducting member (22) is provided between the plurality of connecting members (21); and the plurality of connecting members (21) are electrically connected to each other via the conducting member (22).

8. The liquid-cooled connecting component (100) according to claim 7, characterized in that: The connecting piece (21) is further provided with a crimping hole, the crimping hole being in communication with the inner cavity (215), the power line (31) passing through the through tube (2111) and the inner cavity (215) to be crimped with the crimping hole, and the diameter of the crimping hole is smaller than the diameter of the inner cavity (215); And / or one end of the liquid cooling pipe (32) is sleeved on the outer wall of the through pipe (2111) to communicate with the through pipe (2111).

9. The liquid-cooled connecting component (100) according to claim 8, characterized in that: The plurality of connecting pipes (122) are arranged vertically, and the plurality of connecting members (21) are arranged vertically.

10. A charging gun, characterized in that: It comprises a shell and a plurality of liquid-cooling connection components (100) according to any one of claims 1 to 9, wherein the plurality of liquid-cooling connection components (100) are arranged transversely.

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