Leak-proof terminal internal liquid cooling connector

Abstract

The invention discloses an anti-leakage liquid cooling connector in a terminal. The connector comprises a plurality of inner-cooling female terminals arranged in a socket body, a plurality of inner-cooling male terminals arranged in a plug body, and an anti-leakage part, a valve body of the leakproof part is fixedly sleeved with a mounting groove of an inner-cooling female terminal, the front end of a valve element is slidably and hermetically connected with a front shaft hole of the valve body, a middle shoulder of the valve element is tightly attached to the rear end face of the front shaft hole, the shoulder and a rear shaft hole of the valve body form a radial gap, the front end of a steering cavity of the inner-cooling female terminal is communicated with the rear shaft hole, and the two ends of a reset spring are attached to the shoulder and the wall of the steering cavity. The opening and closing rod pushes the valve element, and the end, provided with a circumferential liquid opening, of the valve element enters the rear shaft hole, so that cooling channels of the two terminals communicate with liquid to cool the connector. When the opening and closing rod is pulled out, the reset spring drives the valve element to return to close the single end of the second cooling channel. The self-resetting leakage-proof connector has the effects of self-resetting leakage prevention, convenience for customers to use, reduction of maintenance, good heat dissipation capability and effective improvement of the performance of the connector.

Description

Technical Field

[0001] The present invention relates to the field of connectors, and particularly to a liquid-cooled connector inside a terminal with leakage prevention. Background Art

[0002] With the rapid development of the new energy industry, connectors are widely used in the efficient transmission of electric energy and charging and discharging. Currently, the host is increasingly upgrading the high-voltage platform, and its requirement for the rated current of connector components is getting higher and higher. Therefore, more and more connectors are provided with cooling modules. The problems are as follows: First, during use, when the head and socket are separated and the coolant is cut off, it is inevitable that some liquid will leak, bringing inconvenience to the cleaning and maintenance of the client. Second, at present, the heat dissipation of connectors is mainly air-cooling or local liquid-cooling at the tail of the terminal, with slow heat dissipation, the heat cannot be quickly discharged, the battery temperature is too high, resulting in a reduction in battery performance, and at the same time affecting the service life of the product. Therefore, the current cooling structure is difficult to meet the demand for a large amount of electricity, and at the same time, it is easy to get hot, overheat or even ablate, posing a safety hazard. Summary of the Invention

[0003] In order to solve one or more of the above problems, the present invention provides a liquid-cooled connector inside a terminal with leakage prevention.

[0004] According to one aspect of the present invention, the liquid-cooled connector inside a terminal with leakage prevention includes:

[0005] A socket body fixedly connected with a plurality of internal cooling female terminals;

[0006] A plug body fixedly connected with a plurality of internal cooling male terminals;

[0007] An internal cooling female terminal, where the inner wall of the installation groove at one end of the internal cooling female terminal is partially concave to form a turning cavity, and the first cooling channel at the other end communicates with the turning cavity;

[0008] An internal cooling male terminal, where an axial opening and closing rod is provided in the insertion hole of the internal cooling male terminal, and the axial second cooling channel of the internal cooling male terminal penetrates through the opening and closing rod. The first cooling channel and the second cooling channel communicate with the inlet and outlet of the cooling circuit;

[0009] A leakage prevention part, where the valve body of the leakage prevention part is fixedly sleeved on the installation groove, the front end of the valve core is slidably sealed to the front shaft hole of the valve body, and the middle shoulder presses and fits against the rear end face of the front shaft hole to single-end close the second cooling channel. A radial gap is formed between the shoulder and the rear shaft hole of the valve body. The front end of the turning cavity communicates with the rear shaft hole. A return spring sleeves the rear end of the valve core and both ends fit against the shoulder and the rear wall of the turning cavity;

[0010] When the plug body is inserted into the socket body, the opening and closing rod pushes the valve core and the end with a circumferential liquid port enters the rear shaft hole, and the first cooling channel, the circumferential liquid port, the radial gap, the rear shaft hole, the steering cavity, and the second cooling channel are connected to conduct liquid to cool the connector; when the plug body drives the opening and closing rod to be pulled out, the return spring drives the valve core to return to its position to seal one end of the second cooling channel.

[0011] This liquid-cooled connector inside the terminal with anti-leakage has a liquid-cooled path inside the terminal, and an anti-leakage part with a self-resetting structure is set for self-sealing. Its beneficial effects are as follows: First, the anti-leakage part with a self-resetting structure is set in the liquid-cooled path inside the terminal, which can effectively avoid a large amount of leakage of the coolant in the liquid-cooled module, facilitating customers to use and reducing maintenance; Second, the liquid-cooled module inside the terminal has good heat dissipation ability, reduces the temperature rise of the connector, effectively improves the current-carrying capacity of the connector, effectively meets the demand for excessive electricity, quickly discharges heat, effectively controls the battery temperature, stabilizes the battery performance at the best performance, and at the same time has high safety performance and long product service life; Third, this structure is simple, the overall size is small, it is convenient for processing, effectively controls costs, and is convenient for maintenance; Fourth, the closing and opening of the valve core and the valve body are realized through the compression and stretching of the spring, and the automatic reset effect can be achieved.

[0012] In some embodiments, a first sealing groove with a circular ring groove structure is provided at the front end of the valve core, a first sealing ring is sleeved on the first sealing groove with interference fit, a second sealing groove with a circular ring groove structure is provided in the middle section of the opening and closing rod, and a second sealing ring is sleeved on the second sealing groove with interference fit;

[0013] The outer end of the first sealing ring is elastically and interference-sealedly connected to the front shaft hole. When the two are plugged, the first sealing ring slides out of the front shaft hole along with the valve core, and the second sealing ring slides into and is interference-sealed to the front shaft hole along with the opening and closing rod.

[0014] In some embodiments, a third sealing groove with a circular ring groove is provided on the outer wall of the valve body, a third sealing ring is sleeved in the third sealing groove, and the third sealing ring is interference-sleeved on the installation groove.

[0015] In some embodiments, a cylindrical front positioning groove is provided on the front end face of the valve core, a sealing plug is provided on the outer end face of the opening and closing rod, and at least two circumferential liquid ports are circumferentially arranged near the outer end face;

[0016] A cylindrical rear positioning groove is provided at the rear end of the valve core, and a front positioning post is provided on the rear wall of the steering cavity. When the opening and closing rod pushes the valve core, the sealing plug is positioned and sleeved on the front positioning groove, and the front positioning post slides and is sleeved on the rear positioning groove.

[0017] In some embodiments, a circular ring groove is provided near the outer end of the installation groove, the cylindrical cap head of the insulating cap fits the front end of the inner cold bus terminal, its cylindrical diameter end is sleeved on the front end of the installation groove, and the circumferentially arranged claws of it are clamped to the circular ring groove.

[0018] In some embodiments, the valve body is of a cylindrical structure and is provided with a front shaft hole and a rear shaft hole that are connected front and back at the center; the front end of the cylindrical core of the valve core is connected to the front shaft hole by an equal-diameter shaft sleeve, and a shoulder platform of a concentric cylinder is formed in the middle of the cylindrical core.

[0019] The installation groove of the central blind hole structure at one end of the internal cooling female terminal and the equal-diameter shaft sleeve of the valve body, and a steering cavity of a cylindrical groove structure is formed at the center of the inner groove wall of the installation groove.

[0020] In some embodiments, the first cooling channel is of a blind hole structure, the end is flush with the front end of the steering cavity, and the open end is provided with an axial threaded hole with a large diameter; the end of the second cooling channel is integrally connected to a radial threaded hole, and the inner ends of the two metal sleeves are threadedly connected to the axial threaded hole and the radial threaded hole, and the outer ends are connected to the inlet and outlet pipe orifices of the cooling circuit.

[0021] In some embodiments, the intermediate positioning platform of the metal sleeve fits the axial threaded hole and the radial threaded hole, the metal sleeve is provided with at least two fourth sealing grooves, and the fourth sealing ring is sleeved in the fourth sealing groove and elastically interference-fits with the axial threaded hole and the radial threaded hole.

[0022] In some embodiments, the expansion groove of the insertion hole is interference-connected to the internal cooling female terminal through a rotating spring.

[0023] In some embodiments, the connector is a high-voltage connector or a battery swapping connector;

[0024] or the valve body is made of nylon material and the valve core is made of PP polypropylene material. Brief Description of the Drawings

[0025] Figure 1 It is a schematic cross-sectional view of the top open liquid passing state of a leak-proof terminal internal liquid cooling connector according to an embodiment of the present invention;

[0026] Figure 2 is Figure 1 A schematic cross-sectional view of the internal cooling female terminal, the internal cooling male terminal and the leak-proof part shown;

[0027] Figure 3 is Figure 2 A partially enlarged schematic view of the internal cooling female terminal, the internal cooling male terminal and the leak-proof part shown;

[0028] Figure 4 is Figure 1 A three-dimensional schematic view of the pull-out reset seal of a leak-proof terminal internal liquid cooling connector shown;

[0029] Figure 5 is Figure 4 A schematic cross-sectional view of the internal cooling female terminal and the leak-proof part shown;

[0030] Figure 6 is Figure 5Three-dimensional schematic diagram of the shown internal cooling female terminal;

[0031] Figure 7 is Figure 5 Three-dimensional exploded schematic diagram of the shown leak-proof part;

[0032] Figure 8 is Figure 4 Three-dimensional schematic diagram of the shown internal cooling male terminal;

[0033] Figure 9 is Figure 8 Cross-sectional schematic diagram of the shown internal cooling male terminal;

[0034] Socket body 1; Plug body 2;

[0035] Internal cooling female terminal 3, mounting groove 30, annular groove 301, first cooling channel 31, turning cavity 32, front positioning post 33, axial threaded hole 34;

[0036] Internal cooling male terminal 4, second cooling channel 40, insertion hole 41, opening and closing rod 42, second sealing groove 421, circumferential liquid port 43, radial threaded hole 44, second sealing ring 45, expansion groove 46, threaded end hole 47;

[0037] Leak-proof part 5, radial clearance 50, valve body 51, front shaft hole 511, rear shaft hole 512, third sealing groove 513, valve core 52, cylindrical core body 520, shoulder 521, first sealing groove 522, front positioning groove 523, rear positioning groove 524, return spring 53, first sealing ring 54, third sealing ring 55;

[0038] Insulating cap 6, cylindrical cap head 61, cylindrical diameter end 62, clamping claw 63;

[0039] Metal sleeve 7, positioning table 71, fourth sealing groove 72, fourth sealing ring 73, pagoda mouth structure 74;

[0040] Rotary spring 8. Specific implementation mode

[0041] The present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0042] Figures 1 to 9 A leak-proof terminal internal liquid cooling connector according to an embodiment of the present invention is schematically shown. As shown in the figure, the leak-proof terminal internal liquid cooling connector includes:

[0043] Socket body 1, and the socket body 1 is fixedly connected with a plurality of internal cooling female terminals 3;

[0044] A plug body 2, to which a plurality of internally cooled male terminals 4 are fixedly connected;

[0045] An inner cooling female terminal 3, wherein the inner groove wall of the mounting groove 30 at one end of the inner cooling female terminal 3 is partially concave to form a turning cavity 32, and a first cooling channel 31 at the other end thereof is connected to the turning cavity 32;

[0046] An inner cooling male terminal 4, an axial opening and closing rod 42 is arranged in the plug hole 41 of the inner cooling male terminal 4, an axial second cooling channel 40 of the inner cooling male terminal 42 passes through the opening and closing rod 42, and the first cooling channel 31 and the second cooling channel 40 are connected to the inlet and outlet of the cooling circuit;

[0047] The anti-leakage part 5, the valve body 51 of the anti-leakage part 5 is fixedly sleeved in the mounting groove 30, the front end of the valve core 52 is slidingly sealed to connect the front shaft hole 511 of the valve body 51, and the middle shoulder 521 thereof is pressed tightly against the rear end surface of the front shaft hole 511 to close the second cooling channel 40 at one end, the shoulder 521 and the rear shaft hole 512 of the valve body 51 form a radial gap 50, the front end of the steering cavity 32 is connected to the rear shaft hole 512, and the return spring 53 sleeves the rear end of the valve core 52, and the two ends are in contact with the shoulder 521 and the rear wall of the steering cavity 32;

[0048] When the plug body 2 is inserted into the socket body 1 and the internally cooled male terminal 4 is inserted into the internally cooled female terminal 3, the opening and closing rod 42 pushes the valve core 52 and its end with the circumferential liquid port 43 enters the rear shaft hole 512, and the first cooling channel 31, the circumferential liquid port 43, the radial gap 50, the rear shaft hole 512, the steering cavity 32, and the second cooling channel 40 are connected to cool the connector; when the plug body 2 drives the opening and closing rod 42 to be pulled out, the reset spring 53 drives the valve core 52 to return to its position so that the second cooling channel 40 is closed at one end.

[0049] The cooling circuit continuously inputs cooling medium to flow through the first cooling channel 31 and the second cooling channel 40. Heat enters the cooling channel from the outside to the inside, and the cooling medium takes away the heat, thereby cooling the connector.

[0050] The leak-proof in-terminal liquid-cooled connector has an in-terminal liquid-cooling passage, and a leak-proof part 5 with a self-resetting structure is provided for self-sealing. Its beneficial effects are as follows: First, the leak-proof part 5 with a self-resetting structure is arranged in the in-terminal liquid-cooling passage, which can effectively avoid a large amount of leakage of the coolant in the liquid-cooling module, facilitating customer use and reducing maintenance; Second, the in-terminal liquid-cooling module has good heat dissipation ability, reducing the temperature rise of the connector, effectively improving the current-carrying capacity of the connector, effectively meeting the demand for excessive power, quickly discharging heat, effectively controlling the battery temperature, making the battery performance stable at the best performance, and at the same time having high safety performance and long product service life; Third, the structure is simple, the overall size is small, it is easy to process, the cost can be effectively controlled, and it is convenient for maintenance; Fourth, the closing and opening of the valve core and the valve body are realized through the compression and stretching of the spring, and the automatic reset effect can be achieved.

[0051] Furthermore, a first sealing groove 522 with a circular groove structure is provided at the front end of the valve core 52, and a first sealing ring 54 is sleeved on the first sealing groove 522 by interference fit. A second sealing groove 421 with a circular groove structure is provided in the middle section of the opening and closing rod 42, and a second sealing ring 45 is sleeved on the second sealing groove 421 by interference fit; when the plug body 2 and the socket body 1 are separated, the outer end of the first sealing ring 54 is elastically and interference-sealed to connect with the front shaft hole 511. When the two are plugged, the first sealing ring 54 slides out of the front shaft hole 511 along with the valve core 52, and the second sealing ring 45 slides into and is interference-sealed to the front shaft hole 511 along with the opening and closing rod 42. Its beneficial effects are as follows: This setting ensures the continuity of sealing through the movable sealing ring and prevents liquid leakage during use.

[0052] Preferably, a third sealing groove 513 with a circular groove is provided on the outer wall of the valve body 51, and a third sealing ring 55 is sleeved in the third sealing groove 513, and the third sealing ring 55 is sleeved on the installation groove 30 by interference fit. Its beneficial effects are as follows: This setting further improves the sealing performance.

[0053] Furthermore, a cylindrical front positioning groove 523 is provided on the front end face of the valve core 52, and a sealing plug is provided on the outer end face of the opening and closing rod 42, and at least two circumferential liquid ports 43 are arranged in a circumferential array near the outer end face.

[0054] A cylindrical rear positioning groove 524 is provided at the rear end of the valve core 52, and a front positioning post 33 is provided on the rear wall of the steering cavity 32. When the opening and closing rod 42 pushes the valve core 52, the sealing plug is positioned and sleeved in the front positioning groove 523, and the front positioning post 33 slides and is sleeved in the rear positioning groove 524. Its beneficial effects are as follows: This setting ensures the straightness of the movement of the valve core 52 and prevents leakage caused by inclination.

[0055] Furthermore, a circular groove 301 is provided near the outer end of the installation groove 30. The cylindrical cap head 61 of the insulating cap 6 fits against the front end of the inner-cooling female terminal 3, its cylindrical diameter end 62 is sleeved on the front end of the installation groove 30, and the circumferentially arrayed claws 63 are clamped to the circular groove 301. The beneficial effect is that the insulating cap 6 has a limiting and anti-retreat effect.

[0056] Furthermore, the valve body 51 is of a cylindrical structure and is provided with a front shaft hole 511 and a rear shaft hole 512 that are connected front and back at the center. The diameter of the front shaft hole 511 is larger than the diameter of the rear shaft hole 512;

[0057] The front end of the cylindrical core body 520 of the valve core 52 is connected to the front shaft hole 511 by an equal-diameter sleeve, and a shoulder 521 of a concentric cylindrical structure is formed in the middle of the cylindrical core body 520.

[0058] One end of the inner-cooling female terminal 3 is provided with an installation groove 30 of a central blind hole structure. The installation groove 30 and the valve body 51 are of equal-diameter sleeves, and a turning cavity 32 of a cylindrical groove structure is formed at the center of the inner groove wall of the installation groove 30. The beneficial effect is that this structure is simple and convenient for processing, manufacturing and assembly.

[0059] Preferably, the other end of the inner-cooling female terminal 3 is a first cooling channel 31 of an eccentric blind hole structure. The end of the first cooling channel 31 is flush with the front end of the turning cavity 32 and a large-diameter axial threaded hole 34 is provided at the open end;

[0060] The second cooling channel 40 of the inner-cooling male terminal 4 is a central axial blind hole. The opening and closing rod 42 is a central shaft tube integrally formed on the rear end wall of the insertion hole 41. The end of the central axial blind hole is integrally connected to a radial threaded hole 44.

[0061] The inner ends of the two metal sleeves 7 are threadedly connected to the axial threaded hole 34 and the radial threaded hole 44, and the outer ends are connected to the inlet and outlet pipes of the cooling circuit. The beneficial effect is that the metal sleeves 7 arranged in this way are convenient for insertion.

[0062] Furthermore, the middle positioning platform 71 of the metal sleeve 7 fits against the ends of the axial threaded hole 34 and the radial threaded hole 44. The metal sleeve 7 is provided with at least two fourth sealing grooves 72. The fourth sealing ring 73 is sleeved in the fourth sealing groove 72 and is elastically and interference-fitted with the axial threaded hole 34 and the radial threaded hole 44; the beneficial effect is that the double-sealing-ring structure prevents liquid leakage at the connection.

[0063] The outer end of the metal sleeve 7 is provided with a bell mouth structure 74, and the bell mouth structure 74 can improve the fastening of the connection;

[0064] The metal sleeve 7 is made of SUS304 stainless steel, which has the characteristics of high mechanical strength, high temperature resistance, good thermal stability, rust prevention, etc.

[0065] Furthermore, a rotating spring 8 is installed in the expansion groove 46 on the circumferential wall of the insertion hole 41. The rotating spring 8 is in interference connection with the internal cooling female terminal 3. The rotating spring 8 is made of beryllium copper alloy. The beneficial effect is that this structure has reliable connection and the plugging and unplugging life is up to more than 10,000 times.

[0066] Preferably, the connector is a high-voltage connector or a battery swapping connector. The beneficial effect is that this setting has a wide range of applications.

[0067] Preferably, the first sealing ring 54, the second sealing ring 45, the third sealing ring 55, and the fourth sealing ring 73 are O-rings.

[0068] Preferably, the valve body 51 is made of nylon material, and the valve core 52 is made of PP polypropylene material. The beneficial effects are that nylon material has high strength, high stiffness, and acid resistance; PP polypropylene material has wear resistance, good chemical stability, heat resistance, and mechanical stability.

[0069] Preferably, the circulating cooling medium is cooling oil or coolant.

[0070] Preferably, the internal cooling female terminal 3 and the internal cooling male terminal 4 are made of copper.

[0071] Preferably, a threaded end hole 47 is provided at the tail of the internal cooling male terminal 4 to realize the connection with the copper handle.

[0072] Furthermore, the connector also has a protection, floating, and guiding structure.

[0073] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. A leak-proof terminal liquid-cooled connector, characterized in that: include: A socket body (1), the socket body (1) being fixedly connected to a plurality of internally cooled female terminals (3); A plug body (2), the plug body (2) being fixedly connected to a plurality of internally cooled male terminals (4); An internally cooled female terminal (3), wherein an inner groove wall of a mounting groove (30) at one end of the internally cooled female terminal (3) is partially concave to form a turning cavity (32), and a first cooling channel (31) at the other end thereof is connected to the turning cavity (32); An internal cooling male terminal (4), wherein an axial opening and closing rod (42) is arranged in a plug-in hole (41) of the internal cooling male terminal (4), an axial second cooling channel (40) of the internal cooling male terminal (42) penetrates the opening and closing rod (42), and the first cooling channel (31) and the second cooling channel (40) are connected to the inlet and outlet of the cooling circuit; The anti-leakage part (5) includes a valve body (51) fixedly sleeved in the mounting groove (30), a front end of the valve core (52) slidingly sealingly connected to the front shaft hole (511) of the valve body (51), and an intermediate shoulder (521) thereof pressingly fits the rear end surface of the front shaft hole (511) so that the second cooling channel (40) is closed at one end, a radial gap (50) is formed between the shoulder (521) and the rear shaft hole (512) of the valve body (51), a front end of the steering cavity (32) is connected to the rear shaft hole (512), and a return spring (53) sleeves the rear end of the valve core (52) and the two ends fit the shoulder (521) and the rear wall of the steering cavity (32); When the plug body (2) is inserted into the socket body (1), the opening and closing rod (42) pushes the valve core (52) and the end thereof with the circumferential liquid port (43) enters the rear shaft hole (512), and the first cooling channel (31), the circumferential liquid port (43), the radial gap (50), the rear shaft hole (512), the steering cavity (32), and the second cooling channel (40) are connected to allow liquid to flow through the connector to cool the connector; when the plug body (2) drives the opening and closing rod (42) to be pulled out, the return spring (53) drives the valve core (52) to return to its original position so that the second cooling channel (40) is closed at one end.

2. The leak-proof terminal-internal liquid-cooled connector according to claim 1, characterized in that: The front end of the valve core (52) is provided with a first sealing groove (522) with a circular groove structure, the first sealing groove (522) is sleeved with a first sealing ring (54) in an interference fit, and the middle section of the opening and closing rod (42) is provided with a second sealing groove (421) with a circular groove structure, the second sealing groove (421) is sleeved with a second sealing ring (45) in an interference fit; The outer end of the first sealing ring (54) is elastically interference-sealed to connect the front shaft hole (511). When the two are plugged in, the first sealing ring (54) slides out of the front shaft hole (511) along with the valve core (52), and the second sealing ring (45) slides into the front shaft hole (511) along with the opening and closing rod (42) and interference-seales the front shaft hole (511).

3. The leak-proof terminal-internal liquid-cooled connector according to claim 2, characterized in that: The outer wall of the valve body (51) is provided with a third sealing groove (513) in the form of an annular groove, a third sealing ring (55) is sleeved in the third sealing groove (513), and the third sealing ring (55) is interference-fitted with the mounting groove (30).

4. The leak-proof terminal-internal liquid-cooled connector according to claim 2, characterized in that: The front end surface of the valve core (52) is provided with a cylindrical front positioning groove (523), the outer end surface of the opening and closing rod (42) is provided with a sealing plug and at least two circumferential liquid ports (43) are arranged in a circumferential array near the outer end surface; The rear end of the valve core (52) is provided with a cylindrical rear positioning groove (524), and the rear wall of the steering cavity (32) is provided with a front positioning column (33). When the opening and closing rod (42) pushes the valve core (52), the sealing plug positions the front positioning groove (523) of the shaft sleeve and the front positioning column (33) slides into the rear positioning groove (524) of the shaft sleeve.

5. The leak-proof terminal-internal liquid-cooled connector according to claim 1, characterized in that: The mounting groove (30) is provided with an annular groove (301) near the outer end, the cylindrical cap head (61) of the insulating cap (6) fits the front end of the inner cooling female terminal (3), the cylindrical diameter end (62) of the insulating cap (6) fits the front end of the sleeve mounting groove (30), and the claws (63) of the insulating cap (6) are clamped in the annular groove (301).

6. A leak-proof terminal-internal liquid-cooled connector according to any one of claims 1 to 5, characterized in that: The valve body (51) is a cylindrical structure and is provided with a front axial hole (511) and a rear axial hole (512) connected to each other in the center; the front end of the cylindrical core (520) of the valve core (52) is connected to the front axial hole (511) by an equal-diameter shaft sleeve, and a concentric cylindrical shoulder (521) is formed in the middle of the cylindrical core (520). The mounting groove (30) with a central blind hole structure at one end of the internally cooled female terminal (3) and the valve body (51) have equal diameter shaft sleeves, and the center of the inner groove wall of the mounting groove (30) forms a steering cavity (32) with a cylindrical groove structure.

7. The leak-proof terminal-internal liquid-cooled connector according to claim 6, characterized in that: The first cooling channel (31) is a blind hole structure with its end flush with the front end of the turning cavity (32) and an open end provided with a large-diameter axial threaded hole (34); the end of the second cooling channel (40) is integrally connected to a radial threaded hole (44); the inner ends of the two metal sleeves (7) are threadedly connected to the axial threaded hole (34) and the radial threaded hole (44) and the outer ends are connected to the inlet and outlet pipes of the cooling circuit.

8. The leak-proof terminal-internal liquid-cooled connector according to claim 7, characterized in that: The middle positioning platform (71) of the metal sleeve (7) fits the axial threaded hole (34) and the radial threaded hole (44), the metal sleeve (7) is provided with at least two fourth sealing grooves (72), and the fourth sealing ring (73) is sleeved in the fourth sealing groove (72) and elastically interference connected to the axial threaded hole (34) and the radial threaded hole (44).

9. The leak-proof terminal-internal liquid-cooled connector according to claim 8, characterized in that: The expansion groove (46) of the plug hole (41) is interference-connected to the internally cooled female terminal (3) via a rotating spring (8).

10. The leak-proof terminal-internal liquid-cooled connector according to any one of claims 1 to 9, characterized in that: The connector is a high voltage connector or a battery replacement connector; Or the valve body (51) is made of nylon material, and the valve core (52) is made of PP polypropylene material.

Images