Liquid cooling connector and liquid cooling terminal assembly thereof

Abstract

The invention relates to a conductive connecting device, in particular to a liquid cooling connector and a liquid cooling terminal assembly thereof. According to the liquid-cooled terminal assembly, the cooling liquid of one liquid-cooled cable flows in from the liquid flow hole in the rear end of the corresponding terminal, flows into the liquid flow hole of the other terminal through the terminal flow passage and the flow passage piece, and flows back to the other liquid-cooled cable, so that the circulating flow of the cooling liquid is realized; therefore, the lead and the positive and negative terminals of the liquid-cooled cable are cooled. Meanwhile, the liquid flow holes are located in the positive and negative terminals and do not occupy the space outside the positive and negative terminals, the overflowing part utilizes the space between the positive and negative terminals, the occupied space is small on the whole, and the size of the liquid cooling terminal assembly is small; and in the whole circulating flow path, only the butt joint positions of the two ends of the overflowing piece and the butt joint sleeve and the assembling section are sealed, sealing is short, and sealing reliability can be guaranteed.

Description

Technical Field

[0001] The invention relates to a conductive connecting device, in particular to a liquid-cooling connector and a liquid-cooling terminal assembly thereof. Background Art

[0002] As the charging current of new energy vehicles increases, in order to reduce heat generation, liquid-cooled connectors that use liquid-cooled wires to reduce temperature rise have emerged. For example, a liquid cooling device for a charging gun cable disclosed in the Chinese utility model patent with authorization announcement number CN218274082U includes an end cap, on which positive and negative terminals are sealed and installed, and the end cap has an inner cavity with an opening facing backwards, into which the positive and negative terminals extend, and a pressure plate connection cover is sealed and installed at the opening of the end cap, and the positive and negative liquid-cooled cables are sealed through the pressure plate connection cover and extend into the inner cavity of the end cap, and the internal wires of the liquid-cooled cable are connected to the corresponding terminals, and the liquid-cooled channels of the liquid-cooled cable located outside the wires are connected to the inner cavity of the end cap. In this way, the two liquid-cooled cables are interconnected through the end caps to realize the liquid cooling channels, thereby realizing a one-in-one-out cooling circulation loop, and realizing the cooling of the cables and the charging gun terminals. However, in this type of liquid-cooled connector, the inner cavity of the end cap for connecting the two liquid-cooled cables wraps the two terminals as a whole, the end cap is relatively large, and the length of the edge of the seal between it and the pressure plate connection cover is relatively long, and the sealing requirements are relatively high. In addition, the end cap and the pressure plate connection cover are fixedly connected by multiple connecting screws arranged around the edge, and the tightening degree of these connecting screws is inconsistent, which easily causes the seal at the edge to fail. Therefore, the existing liquid-cooled connector has a large overall size and poor sealing reliability. Summary of the invention

[0003] The purpose of the present invention is to provide a liquid-cooled terminal assembly to solve the problem of large overall size and poor sealing reliability of the cable liquid cooling device in the prior art. At the same time, the present invention also provides a liquid-cooled connector to solve the problem of large overall size and poor sealing reliability of the existing liquid-cooled connector.

[0004] The liquid-cooling terminal assembly of the present invention includes positive and negative terminals arranged in parallel, and the positive and negative terminals have a plug-in section, an assembly section and a wiring section from front to back in sequence. The positive and negative terminals have a liquid flow hole extending forward from the rear end and communicating with the liquid cooling channel of the liquid cooling cable when in use, and the liquid flow hole extends to the assembly section through the wiring section. A radially penetrating terminal flow channel is provided on the wall of the liquid flow hole at the assembly section. A docking sleeve is also sealed on the assembly section. The docking sleeves mounted on the positive and negative terminals are respectively provided with docking ports on the facing sides, and the terminal flow channel is connected to the docking port. The two docking ports are sealed and docked with a flow piece to realize the mutual communication of the two terminal flow channels of the positive and negative terminals. The liquid-cooling terminal assembly also includes upper and lower clamps, which are buckled and connected to each other and simultaneously clamp the positive and negative terminals to limit the positive and negative terminals in the parallel direction.

[0005] Furthermore, the upper and lower clamps are clamped at the assembly section and the docking sleeve is clamped inside, the docking sleeve is inserted into the assembly section from back to front, the positive and negative terminals are provided with front stop surfaces that stop the docking sleeve forward, at least one of the upper and lower clamps is provided with a bite structure that matches the positive and negative terminals in a radial direction to achieve stopping of the two in the front and rear directions, the bite structure is located on the front side of the docking sleeve, and at least one of the upper and lower clamps is also provided with a rear stop surface that matches the docking sleeve in the rearward direction.

[0006] Furthermore, the upper and lower clamps each include two arcuate clamp body parts arranged in parallel and a middle connecting section connecting the two arcuate clamp body parts. At least one of the middle connecting sections of the upper and lower clamps is provided with an axial limiting structure for limiting the flow component in the axial direction of the flow component.

[0007] Furthermore, at least one of the middle connecting sections of the upper and lower clamps is also provided with a circumferential limiting structure for limiting the flow component in the circumferential direction of the flow component.

[0008] Furthermore, the flow component includes a flow tube, both ends of which are docking ends respectively used for sealing and plugging with the docking port, and a limiting outer convex ring is provided on the outer wall of the flow tube at a position between the two docking ends, and the axial limiting structure is a limiting groove for the limiting outer convex ring to be inserted into and for axially stopping and limiting the limiting outer convex ring.

[0009] Furthermore, the limiting outer convex ring is a polygonal outer convex ring, the limiting groove is a rotation-stop groove adapted to the outer contour of the limiting outer convex ring, and the rotation-stop groove constitutes the circumferential limiting structure.

[0010] Furthermore, the middle connecting sections of the upper and lower clamps are fastened and connected by connecting screws located at the front and rear sides of the flow-through piece so as to be clamped up and down.

[0011] Furthermore, the upper and lower clamps each include two arcuate clamp body parts arranged in parallel, and the two arcuate clamp body parts respectively clamp the positive and negative terminals. In the parallel direction of the two arcuate clamp body parts, the edges of the upper and lower clamps that are far away from each other are clamped and connected by a snap buckle and a snap groove.

[0012] Furthermore, a flow ring groove is provided on the outer peripheral surface of the assembly section at a position corresponding to the docking port, and the terminal flow channel is a flow hole provided corresponding to the bottom of the flow ring groove.

[0013] Furthermore, there are multiple groups of flow holes, and the multiple groups of flow holes are arranged at intervals in the axial direction, and the multiple flow holes included in each group are evenly distributed in the circumferential direction.

[0014] Furthermore, at least one of the upper and lower clamps is provided with a retaining structure for engaging with the connector housing.

[0015] Furthermore, the anti-retraction structure is an anti-retraction elastic arm used to cooperate with the anti-retraction groove on the connector housing, and the anti-retraction elastic arm cantilevers radially outward from front to rear.

[0016] The present invention pioneers a liquid-cooling terminal assembly, in which the positive and negative terminals arranged in parallel have liquid flow holes extending forward from the rear end and communicating with the liquid cooling channel of the liquid-cooling cable when in use, the liquid flow holes extend to the assembly section through the wiring section, and the hole wall of the liquid flow holes at the assembly section is provided with a radially penetrating terminal flow channel, and the assembly section is also sealed with a docking sleeve, and the docking sleeves mounted on the positive and negative terminals are respectively provided with docking ports on the opposite sides, the terminal flow channel is connected to the docking port, and a flow piece is sealed and docked between the two docking ports to realize the mutual communication of the two terminal flow channels of the positive and negative terminals. In the liquid-cooled terminal assembly of this scheme, the coolant of one liquid-cooled cable flows into the liquid flow hole at the rear end of the corresponding terminal, flows into the liquid flow hole of the other terminal through the terminal flow channel and the flow piece, and flows back to the other liquid-cooled cable, realizing the circulation of the coolant, thereby cooling the wires and the positive and negative terminals of the liquid-cooled cable; at the same time, the liquid flow hole is located in the positive and negative terminals and does not occupy the space outside the positive and negative terminals. The flow piece utilizes the space between the positive and negative terminals, and the overall space occupied is small, and the volume of the liquid-cooled terminal assembly is small; and in the entire circulation flow path, it is only necessary to seal at the docking positions at both ends of the flow piece and between the docking sleeve and the assembly section. The seal is short and can ensure the reliability of the seal.

[0017] The liquid-cooling connector of the present invention comprises a connector housing and a liquid-cooling terminal assembly for connecting to a liquid-cooling cable, the liquid-cooling terminal assembly comprising positive and negative terminals arranged in parallel, the positive and negative terminals having a plug-in section, an assembly section and a wiring section in sequence from front to back, the positive and negative terminals having a liquid flow hole extending forward from the rear end and communicating with the liquid cooling channel of the liquid-cooling cable when in use, the liquid flow hole extending to the assembly section through the wiring section, a radially penetrating terminal flow channel is provided on the wall of the liquid flow hole at the assembly section, a butt sleeve is also sealed on the assembly section, the butt sleeves mounted on the positive and negative terminals are respectively provided with butt ports on the facing sides, the terminal flow channel is connected to the butt port, the two butt ports are sealed and butt-jointed with a flow piece to realize the mutual communication of the two terminal flow channels of the positive and negative terminals, the liquid-cooling terminal assembly also comprises upper and lower clamps, the upper and lower clamps are buckled and connected and simultaneously clamp the positive and negative terminals to limit the positive and negative terminals in the parallel direction.

[0018] Furthermore, the upper and lower clamps are clamped at the assembly section and the docking sleeve is clamped inside, the docking sleeve is inserted into the assembly section from back to front, the positive and negative terminals are provided with front stop surfaces that stop the docking sleeve forward, at least one of the upper and lower clamps is provided with a bite structure that matches the positive and negative terminals in a radial direction to achieve stopping of the two in the front and rear directions, the bite structure is located on the front side of the docking sleeve, and at least one of the upper and lower clamps is also provided with a rear stop surface that matches the docking sleeve in the rearward direction.

[0019] Furthermore, the upper and lower clamps each include two arcuate clamp body parts arranged in parallel and a middle connecting section connecting the two arcuate clamp body parts. At least one of the middle connecting sections of the upper and lower clamps is provided with an axial limiting structure for limiting the flow component in the axial direction of the flow component.

[0020] Furthermore, at least one of the middle connecting sections of the upper and lower clamps is also provided with a circumferential limiting structure for limiting the flow component in the circumferential direction of the flow component.

[0021] Furthermore, the flow component includes a flow tube, both ends of which are docking ends respectively used for sealing and plugging with the docking port, and a limiting outer convex ring is provided on the outer wall of the flow tube at a position between the two docking ends, and the axial limiting structure is a limiting groove for the limiting outer convex ring to be inserted into and for axially stopping and limiting the limiting outer convex ring.

[0022] Furthermore, the limiting outer convex ring is a polygonal outer convex ring, the limiting groove is a rotation-stop groove adapted to the outer contour of the limiting outer convex ring, and the rotation-stop groove constitutes the circumferential limiting structure.

[0023] Furthermore, the middle connecting sections of the upper and lower clamps are fastened and connected by connecting screws located at the front and rear sides of the flow-through piece so as to be clamped up and down.

[0024] Furthermore, the upper and lower clamps each include two arcuate clamp body parts arranged in parallel, and the two arcuate clamp body parts respectively clamp the positive and negative terminals. In the parallel direction of the two arcuate clamp body parts, the edges of the upper and lower clamps that are far away from each other are clamped and connected by a snap buckle and a snap groove.

[0025] Furthermore, a flow ring groove is provided on the outer peripheral surface of the assembly section at a position corresponding to the docking port, and the terminal flow channel is a flow hole provided corresponding to the bottom of the flow ring groove.

[0026] Furthermore, there are multiple groups of flow holes, and the multiple groups of flow holes are arranged at intervals in the axial direction, and the multiple flow holes included in each group are evenly distributed in the circumferential direction.

[0027] Furthermore, the connector housing includes a front housing and a rear housing, the front housing is provided with a plug-in port for plugging in an adapter connector, the rear housing is provided with a mounting port for inserting a liquid-cooling terminal assembly from the back to the front, a rear cover is buckled at the edge of the mounting port to stop the liquid-cooling terminal assembly in the backward direction, and the rear cover is provided with a threading hole for passing the liquid-cooling cables connected to the positive and negative terminals.

[0028] Furthermore, at least one of the upper and lower clamps is provided with a retaining structure for engaging with the connector housing.

[0029] Furthermore, a stop-retraction slot is provided on the connector housing, and the stop-retraction structure is a stop-retraction elastic arm used to cooperate with the stop-retraction slot, and the stop-retraction elastic arm radially extends outward from front to rear.

[0030] The present invention provides a pioneering liquid-cooled connector, in which the positive and negative terminals arranged in parallel in the liquid-cooled terminal assembly both have liquid flow holes extending forward from the rear end and communicating with the liquid cooling channel of the liquid-cooled cable when in use, the liquid flow holes extending to the assembly section through the wiring section, the hole wall of the liquid flow holes at the assembly section is provided with a radially penetrating terminal flow channel, the assembly section is also sealed with a docking sleeve, the docking sleeves mounted on the positive and negative terminals are respectively provided with docking ports on the opposite sides, the terminal flow channel is connected to the docking port, and a flow piece is sealed and docked between the two docking ports to realize the mutual communication of the two terminal flow channels of the positive and negative terminals. In the liquid-cooled terminal assembly of this scheme, the coolant of one liquid-cooled cable flows into the liquid flow hole at the rear end of the corresponding terminal, flows into the liquid flow hole of the other terminal through the terminal flow channel and the flow piece, and flows back to the other liquid-cooled cable, realizing the circulation of the coolant, thereby cooling the wires and the positive and negative terminals of the liquid-cooled cable; at the same time, the liquid flow hole is located in the positive and negative terminals and does not occupy the space outside the positive and negative terminals. The flow piece utilizes the space between the positive and negative terminals, and the overall space occupied is small, and the volume of the liquid-cooled terminal assembly is small; and in the entire circulation flow path, it is only necessary to seal at the docking positions at both ends of the flow piece and between the docking sleeve and the assembly section. The seal is short and can ensure the reliability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the liquid cooling connector of the present invention; Figure 2 for Figure 1 A three-dimensional schematic diagram of the liquid cooling connector from another perspective; Figure 3 for Figure 1 An exploded view of the liquid cooling connector shown; Figure 4 It is a schematic diagram of the structure of the liquid cooling terminal assembly when connected to the liquid cooling cable; Figure 5 for Figure 4 A schematic diagram of the structure shown is a bottom-up perspective; Figure 6 for Figure 5 The cross-section at A in the middle; Figure 7 for Figure 6 The cross-section at point B in the middle; Figure 8 for Figure 4 A schematic diagram of the structure in which the upper clamp is hidden; Fig. 9 for Figure 4 A perspective exploded view of the structure shown; Fig.10 It is a structural schematic diagram of the lower hoop; Fig.11 Schematic diagram of the structure of the upper hoop; Fig.12 It is the structural schematic diagram of the flow-through parts; Fig.13 It is a structural schematic diagram of the docking sleeve; Fig.14 It is a schematic diagram of the structure of the rear shell.

[0032] In the figure: 10, front housing; 11, rear housing; 100, plug-in port; 110, installation port; 118, wire sealing body; 119, rear cover; 129, anti-retraction slot; 2, liquid cooling terminal assembly; 20, positive and negative terminals; 200, bite ring groove; 201, plug-in section; 202, assembly section; 203, wiring section; 204, terminal flow channel; 205, liquid flow hole; 206, front stop convex ring; 207, flow ring groove; 210, upper clamp; 211, lower clamp; 212, bite convex rib; 213, stop convex rib; 219, stop Retracting arm; 22, docking sleeve; 221, docking boss; 228, rear step surface; 229, matching plane; 23, flow-through piece; 230, flow-through pipe; 231, limiting outer convex ring; 232, assembly outer convex ring; 233, docking end; 2100, arc-shaped hoop body portion; 2111, middle connecting section; 2101, snap-fit ​​buckle; 2102, snap-fit ​​groove; 2113, clamping vertical plate; 2114, limiting slot; 2115, buckle sleeve; 2116, screw hole column; 2119, anti-rotation matching surface; 2210, docking port; 9, liquid cooling cable. DETAILED DESCRIPTION

[0033] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0034] The present invention provides a pioneering liquid-cooled connector, which mainly redesigns the structural form of a liquid-cooled terminal assembly installed in the liquid-cooled connector for connecting to a liquid-cooled cable. By designing a cooling medium circulation channel between two liquid-cooled cables, the space occupied by the liquid-cooled terminal assembly is reduced, and ultimately the volume of the liquid-cooled connector is reduced; at the same time, the sealing path that needs to be sealed on the cooling medium circulation channel at the liquid-cooled terminal assembly is reduced, thereby improving the reliability of the seal.

[0035] Based on the above concept, various different embodiments are provided below for illustration.

[0036] In a basic embodiment, Figure 1-9 It is understood that the liquid-cooled connector of this embodiment includes a connector housing and a liquid-cooled terminal assembly 2 installed in the connector housing, the liquid-cooled terminal assembly 2 includes positive and negative terminals 20 arranged in parallel, the front side of the positive and negative terminals 20 is a plug-in side for plugging with the adapter connector after being installed in the connector housing, the middle section of the positive and negative terminals 20 is used to achieve fixed assembly in the connector housing, and the rear side of the positive and negative terminals 20 is used to connect with the liquid-cooled cable 9, that is, the positive and negative terminals 20 have a plug-in section 201, an assembly section 202 and a wiring section 203 from front to back.

[0037] Among them, the positive and negative terminals 20 have liquid flow holes 205 extending from the rear end to the front and communicating with the liquid cooling channel of the liquid cooling cable 9 when in use. The liquid flow holes 205 extend to the assembly section 202 through the wiring section 203. In this way, the coolant flowing from the liquid cooling cable 9 into the positive and negative terminals 20 can have a longer flow path therein, and the heat exchange area between the positive and negative terminals 20 is larger, which can have a better cooling effect on the positive and negative terminals 20. A radially penetrating terminal flow channel 204 is provided on the wall of the liquid flow hole 205 at the assembly section 202, and a docking sleeve 22 is also sealed on the assembly section 202. The docking sleeves 22 mounted on the positive and negative terminals 20 are respectively provided with docking ports 2210 on the opposite sides, and the terminal flow channel 204 is connected with the docking port 2210. There is a flow piece 23 sealed and docked between the two docking ports 2210, so that the two terminal flow channels 204 of the positive and negative terminals 20 can be connected to each other, so that after the coolant in one of the liquid-cooling cables 9 flows into the liquid flow hole 205 of one of the positive and negative terminals 20, it can flow into the liquid flow hole 205 of the other positive and negative terminal 20 through the terminal flow channel 204 and the flow piece 23, and reflux through the other liquid-cooling cable 9, thereby realizing the circulation of the coolant.

[0038] In order to ensure the docking reliability between the current-passing member 23 and the two docking sleeves 22 while facilitating manufacturing and assembly, the liquid-cooling terminal assembly 2 also includes upper and lower clamps, which are buckled and connected and simultaneously clamp the positive and negative terminals 20 to limit the positive and negative terminals 20 in the parallel direction to prevent the positive and negative terminals 20 from shifting in the direction away from each other in the parallel direction.

[0039] The coolant of this liquid-cooled terminal assembly 2 flows into the positive and negative terminals 20, and circulates through the flow-through piece 23 between the positive and negative terminals 20, without occupying the space outside the positive and negative terminals 20, and can achieve a smaller volume; at the same time, in the entire circulation flow path, it is only necessary to seal at the docking positions at both ends of the flow-through piece 23 and between the docking sleeve 22 and the assembly section 202, and the seal is short, which can ensure the reliability of the seal.

[0040] On the basis of the above-mentioned embodiment, in a more specific embodiment, the upper and lower clamps are clamped at the assembly section 202 and the docking sleeve 22 is clamped inside, so that the docking position of the docking sleeve 22 and the current-passing member 23 can be clamped and limited directly. Since the more important function of the plug-in section 201 is to adapt and plug with the adapter connector, in order to avoid the possible influence of the docking sleeve 22 on the plug-in section 201 when it is inserted from front to back on the positive and negative terminals 20, in this embodiment, the docking sleeve 22 is inserted from back to front on the assembly section 202, and a front stop convex ring 206 is provided at the front side position of the assembly section 202 of the positive and negative terminals 20, and the rear side surface of the front stop convex ring 206 constitutes the front stop surface of the front stop docking sleeve 22; at the same time, in order to prevent the docking sleeve 22 from being restricted The butt joint 2210 is moved backward due to the bundle, resulting in the misalignment of the butt joint port 2210 and the terminal liquid flow channel, causing the seal to fail. In this embodiment, at least one of the upper and lower clamps is provided with a bite structure that matches the positive and negative terminals 20 in the radial direction, so as to achieve the stop of the two in the front and rear directions. The bite structure is located on the front side of the butt joint sleeve 22. At least one of the upper and lower clamps is also provided with a rear stop surface that matches the butt joint sleeve 22 in the backward direction. The butt joint sleeve 22 is constrained and limited in the backward direction through the rear stop surface. In this way, after the upper and lower clamps are tightly clamped at the assembly section 202, on the one hand, the positive and negative terminals 20 are limited in the parallel direction, and at the same time, the axial limit of the butt joint sleeve 22 is also achieved.

[0041] Based on the above embodiment, in one embodiment, the upper and lower clamps can be a tile-shaped structure including a middle straight section and arc sections at both ends of the middle straight section. The upper and lower clamps are buckled to hold the positive and negative terminals 20 at the same time. The arc sections on both sides constrain the positive and negative terminals 20 to prevent them from moving away from each other. The upper and lower clamps are fastened and connected by connecting screws that pass through the middle straight section. Figure 3-11In the illustrated embodiment, the upper and lower clamps each include two arcuate clamp body portions 2100 arranged in parallel and a middle connecting section 2111 connecting the two arcuate clamp body portions 2100. The middle connecting sections 2111 of the upper and lower clamps are fastened together by connecting screws located at the front and rear sides of the current-passing member 23, and the inner arc surfaces of the two arcuate clamp body portions 2100 are clamped at the assembly section 202 of the positive and negative terminals 20, which not only avoids the two positive and negative terminals 20 from moving away from each other, but also avoids the two positive and negative terminals 20 from moving close to each other.

[0042] At this time Figure 6-11 As shown, the front end position of the assembly section 202 of the positive and negative terminals 20 is provided with a bite ring groove 200, and the arc-shaped hoop body part 2100 of the upper and lower clamps is provided with a bite convex rib 212 at a position corresponding to the bite ring groove 200. When the upper and lower clamps are buckled and clamped to the positive and negative terminals 20, the bite convex rib 212 and the bite ring groove 200 are matched in a concave-convex manner, thereby realizing the stop between the upper and lower clamps and the positive and negative terminals 20 in the front and rear directions. Of course, in different embodiments, the setting position of the bite convex rib 212 can be different, for example, it is only set on one of the upper and lower clamps, and no longer set on the other. Alternatively, in other embodiments, the front end of the assembly section 202 of the positive and negative terminals 20 is provided with an outwardly convex bite convex ring, and correspondingly, a bite groove is set on the arc-shaped hoop body part 2100 of at least one of the upper and lower clamps.

[0043] In addition, from Figure 6-11 It can also be seen from Figures 13 that a stop rib 213 is provided on the arc-shaped hoop body portion 2100 of the upper and lower clamps near the rear end, and a rear step surface 228 is provided near the rear end of the docking sleeve 22. After the upper and lower clamps are buckled and clamped, the stop rib 213 blocks the rear side of the rear step surface 228, thereby stopping the docking sleeve 22 in the rear direction, that is, in this case, the front side surface of the stop rib 213 constitutes the above-mentioned rear stop surface.

[0044] On the basis of the above embodiments, in one embodiment, the inner circumference of the docking sleeve 22 and the outer circumference of the assembly section 202 are respectively provided with matching planes, that is, after the docking sleeve 22 is sleeved on the assembly section 202, the docking sleeve 22 is matched with the assembly section 202 to ensure that there is no relative rotation between the assembly section 202, and at the same time, the docking ports 2210 of the two docking sleeves 22 on the positive and negative terminals 20 are arranged opposite to each other, and the two ends of the flow-through piece 23 are plugged and docked with the two docking ports 2210. After the upper and lower clamps are tightly clamped on the outside of the docking sleeve 22, since the spacing between the two positive and negative terminals 20 remains unchanged, a reliable plug-in connection can be ensured between the docking sleeve 22 and the flow-through piece 23.

[0045] In another embodiment, at least one of the middle connecting sections 2111 of the upper and lower clamps is provided with an axial limiting structure for limiting the flow member 23 in the axial direction of the flow member 23. The flow member 23 can be limited in its own axial direction through the axial limiting structure. In this way, the upper and lower clamps not only constrain the two positive and negative terminals 20 to ensure that the distance between the two remains unchanged, but also constrain the axial position of the flow member 23, better ensuring that the two ends of the flow member 23 are consistent with the docking sleeve 22, and also avoiding the displacement of the flow member 23 relative to the positive and negative terminals 20 due to the force on the positive and negative terminals 20 during use, thereby ensuring the reliability of the sealed docking. On this basis, in a more preferred embodiment, at least one of the middle connecting sections 2111 of the upper and lower clamps is also provided with a circumferential limiting structure for limiting the flow member 23 in the circumferential direction of the flow member 23, so as to prevent the flow member 23 from rotating around its own axis relative to the docking port 2210, and avoid accidental rotation affecting the sealed docking at both ends.

[0046] Specifically, Figure 7-11 As shown, in this embodiment, the flow member 23 includes a flow tube 230 with a circular cross section. The two ends of the flow tube 230 are docking ends 233, which are respectively inserted into the docking port 2210 of the docking day. The outer circumferential surfaces of the two ends are respectively provided with sealing ring grooves, and sealing rings are installed in the sealing ring grooves. The sealing between the inner wall surface of the docking port 2210 and the outer circumferential surface of the docking end 233 is achieved through the sealing ring. A limiting outer convex ring 231 is provided on the outer wall of the flow tube 230 at a position between the two docking ends 233, and the axial limiting structure is a limiting card groove 2114 for the limiting outer convex ring 231 to be inserted into and axially stop and limit the limiting outer convex ring 231. As shown in FIG. Fig.10 , 11 As shown, both the upper and lower clamps are provided with a limiting slot 2114. The limiting slot 2114 provided on the upper clamp 210 includes four side walls in the front, back, left and right directions. The limiting slot 2114 provided on the lower clamp 211 is formed by two clamping uprights 2113 provided opposite to each other on the left and right sides, so as to limit the flow-through member 23 in two axial directions. Of course, the limiting slot 2114 provided on the upper clamp 210 and the two clamping uprights 2113 provided on the lower clamp 211 are provided with an arc-shaped notch adapted to the outer peripheral surface of the flow tube 230. After the upper and lower clamps are buckled, the limiting slots 2114 on both clamp the flow-through member 23 in a yoke-like manner. Moreover, as Figure 11-12As shown, the limiting outer convex ring 231 is a square outer convex ring with a square outer contour, and the limiting slot 2114 on the upper clamp 210 is a rotation-stopping slot adapted to the outer contour of the limiting outer convex ring 231. The rotation-stopping slot, as a circumferential limiting structure, can limit the rotation of the flow-through member 23 around its own axis. Of course, the figure shows that the limiting outer convex ring 231 is a positive direction outer convex ring, which is only an example. In other embodiments, the outer contour of the limiting outer convex ring 231 can also be a regular pentagon, a regular hexagon, etc., and the inner contour of the limiting slot 2114 can be adapted thereto.

[0047] In addition, if Figure 7-8 As shown in Figure 12, in one embodiment, an outer convex ring 232 is provided on both sides of the limiting outer convex ring 231 on the outer peripheral surface of the flow tube 230, and the outer contour of the assembly outer convex ring 232 is circular, that is, an annular convex ring. An assembly ring groove is formed between the assembly outer convex ring 232 and the limiting outer convex ring 231, and the groove width of the assembly ring groove is adapted to the left and right groove walls of the limiting groove 2114 of the upper clamp 210, and is also adapted to the clamping vertical plate 2113 of the lower clamp 211, so that the left and right groove walls of the limiting groove 2114 and the two clamping vertical plates 2113 can be inserted into the assembly ring groove.

[0048] like Figure 8-10 As shown in Figures 13, in one embodiment, the outer circumference of the assembly section 202 of the positive and negative terminals 20 is a cylindrical surface, and the inner circumference of the docking sleeve 22 is a cylindrical surface. The outer circumference of the assembly section 202 is provided with two front and rear sealing ring grooves, and a sealing ring is installed in the sealing ring groove. After the docking sleeve 22 is sleeved on the assembly section 202, the sealing between the outer circumference of the assembly section 202 and the inner circumference of the docking sleeve 22 is achieved through the sealing line. The terminal flow passage 204 and the docking port 2210 are both located between the front and rear sealing ring grooves. At this time, in order to prevent the docking sleeve 22 from rotating relative to the positive and negative terminals 20, the outer wall of the docking sleeve 22 has an outwardly protruding docking boss 221, and the docking boss 221 extends along the axial direction of the docking sleeve 22, and has a rectangular cross section. The docking boss 221 is provided with a channel that radially penetrates to the inner cavity of the docking sleeve 22, so that the above-mentioned docking port 2210 is formed on the table of the docking boss 221, and the flow member 23 is inserted into the channel to dock with the docking sleeve 22. The setting of the docking boss 221 increases the insertion length between the current-passing member 23 and ensures the sealing performance of the docking position. At the same time, the two side planes of the docking boss 221 that are opposite to each other in the circumferential direction form a matching plane 229. The two adjacent edges of the arc-shaped hoop body portion 2100 of the upper and lower clamps, that is, the edge position where the arc-shaped hoop body portion 2100 is connected to the middle connecting section 2111, have a stop-rotation matching surface 2119. After the upper and lower clamps are buckled, the stop-rotation matching surface 2119 cooperates with the matching plane 229, thereby limiting the rotation of the docking sleeve 22 relative to the positive and negative terminals 20.

[0049] like Figure 10-11As shown, in a more preferred embodiment, in order to ensure the reliability of the screw connection between the upper and lower clamps, a screw hole column 2116 extending toward the upper clamp 210 is provided on the lower clamp 211, and a threaded hole for tightening the connection screw is provided in the screw hole column 2116. By providing the screw hole column 2116, the length of the threaded hole is increased, and the tightening is ensured to be more reliable. In addition, in order to ensure the stability and tightness of the buckling of the upper and lower clamps, a buckling sleeve 2115 is provided on the upper clamp 210 at a position corresponding to the screw hole column 2116. After the upper and lower clamps are buckled, the screw hole column 2116 is inserted into the buckling sleeve 2115. Through the plug-in cooperation of the screw hole column 2116 and the buckling sleeve 2115, the structural strength of the upper and lower clamps at the middle connecting section 2111 can also be improved.

[0050] Based on the above embodiment, in a more preferred embodiment, as Figure 9-11 As shown, in the parallel direction of the two arc-shaped hoop body parts 2100, that is, the left and right directions, the edges of the upper and lower clamps that are away from each other are clamped and connected by the snap buckle 2101 and the snap groove 2102. In this way, the upper and lower clamps are connected up and down at both ends and the middle in the left and right directions, which has a better fixing effect on the positive and negative terminals 20, the docking sleeve 22 and the current-passing member 23.

[0051] On the basis of the above embodiments, in a more preferred embodiment, a flow ring groove 207 is provided on the outer circumferential surface of the assembly section 202 at a position corresponding to the docking port 2210, and the terminal flow channel 204 is a flow hole provided corresponding to the bottom of the flow ring groove 207. In this way, the coolant can be connected with the liquid flow hole 205 through the terminal flow channel 204 on the entire circumference of the assembly section 202 by means of the flow ring groove 207, and there is no need to deliberately ensure the alignment of the terminal flow channel 204 and the docking port 2210 when the docking sleeve 22 is installed on the assembly section 202, thereby reducing the difficulty of assembly. On this basis, in a more preferred embodiment, there are multiple groups of flow holes, and the multiple groups of flow holes are arranged at intervals in the axial direction, and the multiple flow holes contained in each group are evenly distributed in the circumferential direction, so that the flow resistance can be reduced, the flow rate can be increased, and the cooling effect can be improved.

[0052] Regarding the connector housing, there are many different structural forms in the prior art. The following provides an embodiment of a liquid-cooled connector to illustrate a preferred example. Figure 1-3As shown in Figures 1 and 14, the connector housing includes a front housing 10 and a rear housing 11. The front housing 10 has a cylindrical body. The front end of the cylindrical body is a plug-in port 100 for plugging in the adapter connector. A front insulating component is provided in the cylindrical body. The front insulating component is provided with a terminal installation cavity for the positive and negative terminals 20 to extend into. The front end of the terminal installation cavity is provided with a plug-in interface. The plug-in port 100 is for the terminals of the adapter connector to pass through. The rear end of the cylindrical body is a docking interface of the rear housing 11, and the rear housing 11 is connected to the front housing 10 through a snap-fit ​​structure. The rear housing 11 is provided with an installation port 110 for the liquid-cooling terminal assembly 2 to be installed from the back to the front. The edge of the installation port 110 is buckled with a rear cover 119. The front side of the rear cover 119 is provided with a sealing body 118. The rear cover 119 and the sealing body 118 are used to stop the liquid-cooling terminal assembly 2 in the backward direction. The rear cover 119 is provided with a threading hole for the liquid-cooling cable 9 connected to the positive and negative terminals 20 to pass through. In this way, after the liquid-cooling terminal assembly 2 is assembled, it can be installed from the back to the front into the inner cavity surrounded by the front and rear housings 11, stopped by the front insulating component at the front side, and restricted by the rear cover 119 at the rear side, thereby achieving installation in the connector housing.

[0053] In addition, in a preferred embodiment, at least one of the upper and lower clamps is provided with a stop structure for cooperating with the connector housing. The stop structure can, in addition to the stopping effect of the rear cover 119, provide a stop assembly structure between the liquid-cooled terminal assembly 2 and the connector housing, which can also prevent the liquid-cooled cable 9 from shifting when subjected to pulling force.

[0054] On the basis of the above-mentioned embodiments, in one embodiment, a backstop slot 129 is provided on the rear shell 11, and a backstop spring arm 219 for cooperating with the backstop slot 129 is provided on the upper and lower clamps, and the backstop spring arm 219 is radially cantilevered outward from front to back, and the backstop spring arm 219 constitutes the above-mentioned backstop structure. In this way, after the liquid-cooling terminal assembly 2 is assembled in place from back to front, the backstop spring arm 219 naturally rebounds outward and cooperates with the backstop slot 129, which makes assembly more convenient. Of course, in other embodiments, a backstop spring arm 219 extending inward from back to front can also be provided on the inner wall of the rear shell 11, and corresponding backstop slots 129 can be provided on the upper and lower clamps. Alternatively, in one embodiment, the upper and lower clamps are provided with outwardly protruding barb structures, and the rear shell 11 has an inner wall surface adapted to the outer contour of the upper and lower clamps of the liquid-cooled terminal assembly 2. After the liquid-cooled terminal assembly 2 is installed in the rear shell 11, the barb structure serves as a stop structure and is strongly fitted with the inner wall surface of the rear shell 11 to achieve stop.

[0055] The specific structure of the embodiment of the liquid-cooled terminal assembly of the present invention is the same as that of the liquid-cooled terminal assembly in the above-mentioned liquid-cooled connector, and will not be further described.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A liquid-cooled terminal assembly, characterized in that: The invention comprises positive and negative terminals (20) arranged in parallel, wherein the positive and negative terminals (20) have a plug-in section (201), an assembly section (202) and a wiring section (203) in order from front to back, and the positive and negative terminals (20) have a liquid flow hole (205) extending from the rear end to the front and communicating with a liquid cooling channel of a liquid cooling cable (9) when in use, the liquid flow hole (205) extending to the assembly section (202) through the wiring section (203), a terminal flow channel (204) penetrating radially is provided on the hole wall of the liquid flow hole (205) at the assembly section (202), and a sealing sleeve is also provided on the assembly section (202). A docking sleeve (22) is provided, the docking sleeve (22) mounted on the positive and negative terminals (20) are provided with docking ports (2210) on opposite sides respectively, the terminal flow passage (204) is connected to the docking port (2210), a flow piece (23) is sealed and docked between the two docking ports (2210) to achieve mutual communication between the two terminal flow passages (204) of the positive and negative terminals (20), and the liquid cooling terminal assembly (2) also includes upper and lower clamps, the upper and lower clamps are buckled and connected and simultaneously clamp the positive and negative terminals (20) to limit the positive and negative terminals (20) in the parallel direction.

2. The liquid-cooled terminal assembly according to claim 1, characterized in that: The upper and lower clamps are clamped at the assembly section (202) and clamp the docking sleeve (22) therein; the docking sleeve (22) is sleeved on the assembly section (202) from the back to the front; the positive and negative terminals (20) are provided with front stop surfaces for stopping the docking sleeve (22) forward; at least one of the upper and lower clamps is provided with a snap-fit ​​structure that matches the positive and negative terminals (20) in a radial direction so as to stop the two in the front-to-back direction; the snap-fit ​​structure is located at the front side of the docking sleeve (22); at least one of the upper and lower clamps is also provided with a rear stop surface that matches the docking sleeve (22) in a rearward direction.

3. The liquid-cooled terminal assembly according to claim 2, characterized in that: The upper and lower clamps each comprise two arc-shaped clamp body portions (2100) arranged in parallel and a middle connecting section (2111) connecting the two arc-shaped clamp body portions (2100), and at least one of the middle connecting sections (2111) of the upper and lower clamps is provided with an axial limiting structure for limiting the flow passing member (23) in the axial direction of the flow passing member (23).

4. The liquid-cooled terminal assembly according to claim 3, characterized in that: At least one of the middle connecting sections (2111) of the upper and lower clamps is also provided with a circumferential limiting structure for limiting the flow passing member (23) in the circumferential direction of the flow passing member (23).

5. The liquid-cooled terminal assembly according to claim 4, characterized in that: The flow member (23) comprises a flow tube (230), the two ends of the flow tube (230) being docking ends (233) respectively used for sealing and plugging with docking ports (2210), a limiting outer convex ring (231) being provided on the outer wall of the flow tube (230) at a position between the two docking ends (233), and the axial limiting structure being a limiting groove (2114) into which the limiting outer convex ring (231) is inserted and which is axially stopped and limited by the limiting outer convex ring (231).

6. The liquid-cooled terminal assembly according to claim 5, characterized in that: The limiting outer convex ring (231) is a polygonal outer convex ring, the limiting groove (2114) is a rotation-stop groove adapted to the outer contour of the limiting outer convex ring (231), and the rotation-stop groove constitutes the circumferential limiting structure.

7. The liquid-cooled terminal assembly according to claim 3, characterized in that: The middle connecting sections (2111) of the upper and lower clamps are fastened and connected by connecting screws located at the front and rear sides of the flow-through piece (23) so as to be clamped up and down.

8. The liquid-cooled terminal assembly according to claim 7, characterized in that: The upper and lower clamps each comprise two arc-shaped clamp body parts (2100) arranged in parallel, the two arc-shaped clamp body parts (2100) respectively clamp the positive and negative terminals (20), and in the parallel direction of the two arc-shaped clamp body parts (2100), the edges of the upper and lower clamps that are away from each other are clamped and connected via a clamp buckle (2101) and a clamp groove (2102).

9. The liquid-cooled terminal assembly according to any one of claims 1 to 8, characterized in that: A flow ring groove (207) is provided on the outer peripheral surface of the assembly section (202) at a position corresponding to the docking port (2210), and the terminal flow channel (204) is a flow hole provided corresponding to the bottom of the flow ring groove (207).

10. The liquid-cooled terminal assembly according to claim 9, characterized in that: There are multiple groups of flow holes, which are spaced apart in the axial direction, and the multiple flow holes contained in each group are evenly distributed in the circumferential direction.

11. The liquid-cooled terminal assembly according to any one of claims 1 to 8, characterized in that: At least one of the upper and lower clamps is provided with a stop structure for stop cooperation with the connector housing.

12. The liquid-cooled terminal assembly according to claim 11, characterized in that: The anti-retraction structure is an anti-retraction elastic arm (219) used to cooperate with the anti-retraction slot (129) on the connector housing, and the anti-retraction elastic arm (219) cantilevers radially outward from front to rear.

13. A liquid cooling connector, characterized in that: It comprises a connector housing and a liquid-cooled terminal assembly (2) for connecting to a liquid-cooled cable (9), wherein the liquid-cooled terminal assembly (2) is the liquid-cooled terminal assembly (2) according to any one of claims 1 to 10.

14. The liquid-cooled connector according to claim 13, characterized in that: The connector housing comprises a front housing (10) and a rear housing (11); the front housing (10) is provided with a plugging port (100) for plugging in an adapter connector; the rear housing (11) is provided with a mounting port (110) for inserting a liquid cooling terminal assembly (2) from the back to the front; a rear cover (119) is buckled at the edge of the mounting port (110) to stop the liquid cooling terminal assembly (2) in the backward direction; and the rear cover (119) is provided with a threading hole for passing a liquid cooling cable (9) connected to the positive and negative terminals (20).

15. The liquid-cooled connector according to claim 13, characterized in that: At least one of the upper and lower clamps is provided with a stop structure for stop cooperation with the connector housing.

16. The liquid-cooled connector according to claim 15, characterized in that: The connector housing is provided with a stop-retraction slot (129), and the stop-retraction structure is a stop-retraction elastic arm (219) used to cooperate with the stop-retraction slot (129), and the stop-retraction elastic arm (219) cantilevers radially outward from front to rear.

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