An electrical connection device

Abstract

The present invention belongs to the technical field of electrical connectors, and provides an electrical connection device. A fixed baffle is fixedly connected to the front end of the socket housing. The front end of the fixed baffle is fixedly connected to a front outer sleeve and a shielding sleeve. The front outer sleeve is sleeved on the shielding sleeve, and a first annular chamber is formed between the front outer sleeve and the shielding sleeve. A socket terminal is fixedly connected to the fixed baffle, and the socket terminal is located inside the shielding sleeve. A second annular chamber is formed between the shielding sleeve and the socket terminal; an insulating and sealing ring sleeve, a heat dissipation cylinder and a plug core are fixedly connected to the front end of the plug substrate; when the socket end and the plug end are inserted into each other, the plug core is inserted onto the socket terminal, the insulating and sealing ring sleeve is inserted into the first annular chamber, the heat dissipation cylinder is inserted into the second annular chamber and sleeved on the socket terminal, and a heat dissipation medium is arranged inside the heat dissipation cylinder; the present invention integrates the functions of effective heat dissipation and comprehensive shielding. Compared with the prior art, the present invention can perform efficient heat dissipation while effectively shielding.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical connectors, and particularly relates to an electrical connection device. Background Art

[0002] Electrical connectors are indispensable components in electronic devices and are widely used in various electrical devices and systems to achieve the connection and disconnection of circuits. For scenarios in high electromagnetic interference environments, precision electronic devices, or signal-sensitive systems, shielding technology is required to protect the signal transmission inside the connector from external electromagnetic radiation interference and prevent internal signals from leaking out, ensuring signal integrity and system reliability. Current shielding solutions usually adopt the scheme of a metal shielding layer and a metal shielding housing, which construct a shielding layer outside the electrical connector through the shielding metal. However, when the electrical connection device is used in scenarios such as high temperature, long-term use, and large current, it needs to dissipate heat. However, the constructed metal shielding layer also forms a thermal resistance barrier, resulting in the inability to dissipate heat in a timely manner. Therefore, holes are often drilled in the metal shielding layer, and the diameter of the holes needs to be designed without affecting the shielding effect. However, when the hole size approaches the signal wavelength, the electromagnetic wave will have a diffraction effect, resulting in high-frequency signal leakage. Therefore, the diameter of the hole needs to be strictly calculated, which undoubtedly increases the complexity and precision requirements. Moreover, the heat dissipation performance of the structure of the heat dissipation holes is relatively limited. Therefore, in practical applications, it is usually difficult to balance the heat dissipation performance and shielding performance of the electrical connection device. To address this problem, the present invention provides a new technical solution, aiming to provide an electrical connection device with excellent shielding effect and better heat dissipation performance. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides an electrical connection device to solve the problems in the prior art. The technical solution adopted by the present invention is as follows:

[0004] An electrical connection device includes a socket end and a plug end;

[0005] The socket end includes a socket housing, a fixed baffle, a front-end outer sleeve, a shielding sleeve, and socket terminals; the front end of the socket housing is fixedly connected to the fixed baffle, the front end of the fixed baffle is fixedly connected to the front-end outer sleeve and the shielding sleeve, the front-end outer sleeve is sleeved on the shielding sleeve, a first annular chamber is formed between the front-end outer sleeve and the shielding sleeve, the socket terminals are fixedly connected to the fixed baffle, the socket terminals are located inside the shielding sleeve, and a second annular chamber is formed between the shielding sleeve and the socket terminals;

[0006] The plug end includes a plug substrate, and an insulating and sealing ring sleeve, a heat dissipation cylinder, and a core inserted in sequence from outside to inside; the front end of the plug substrate is fixedly connected to the insulating and sealing ring sleeve, the heat dissipation cylinder, and the core;

[0007] When the socket end is inserted into the plug end, the insert core is inserted onto the socket terminal, the insulation and sealing ring sleeve is inserted into the first annular chamber, the heat dissipation cylinder is inserted into the second annular chamber and sleeved on the socket terminal, and a heat dissipation medium is provided inside the heat dissipation cylinder.

[0008] Furthermore, an annular accommodation cavity is provided inside the cylinder body of the heat dissipation cylinder. The accommodation cavity is coaxial with the insert core, and the heat dissipation medium is provided inside the accommodation cavity;

[0009] A plurality of heat conduction tubes are fixedly connected to the heat dissipation cylinder. The heat conduction tubes are distributed in a plurality of annular arrays along the axial direction of the heat dissipation cylinder. Each annular array is evenly provided with a plurality of the heat conduction tubes along the circumferential direction of the heat dissipation cylinder. The heat conduction medium is provided inside the heat conduction tubes and communicates with the accommodation cavity.

[0010] Furthermore, a plurality of axial grooves are provided on the inner wall surface of the shielding sleeve. A plurality of circumferential grooves are provided on the side surfaces of the axial grooves. The plurality of axial grooves correspond to the plurality of heat conduction tubes in position one by one, and the plurality of circumferential grooves correspond to the heat conduction tubes on the plurality of annular arrays one by one;

[0011] When the socket end is inserted into the plug end, the end of the heat conduction tube is located inside the axial groove. By rotating the plug substrate, the heat conduction tube is moved into the circumferential groove, so as to axially constrain the socket end and the plug end.

[0012] Furthermore, a fluid heat conduction medium is provided outside the heat dissipation cylinder inside the second annular chamber. The second annular chamber is communicated with a circulation mechanism, and the circulation mechanism is used for circulating the fluid heat conduction medium for heat dissipation.

[0013] Furthermore, the circulation mechanism includes a storage tube, a piston, an inner shell and a connecting tube;

[0014] An opening groove is provided on the socket housing. A fixed baffle is fixedly connected to the end face of the opening groove. An installation cavity is formed between the fixed baffle and the opening groove. The inner shell is fixedly arranged inside the installation cavity. A circulation cavity is provided inside the inner shell. The storage tube is fixedly connected to the outer wall surface of the socket housing. The storage tube is communicated with a branch tube. The branch tube passes through the socket housing and the inner shell and is communicated with the circulation cavity. The piston is slidably arranged inside the storage tube. The piston is connected to a driving device for driving its movement. A through hole is provided on the fixed baffle. The connecting tube is fixedly connected inside the through hole. The two ends of the connecting tube are respectively communicated with the second annular chamber and the circulation cavity;

[0015] The fluid heat-conducting medium is provided between the piston and the branch pipe, inside the branch pipe, and inside the circulation cavity;

[0016] There are two circulation mechanisms. When the pistons of the two circulation mechanisms move in opposite directions, the fluid heat-conducting medium in one of the second annular chambers flows into one of the circulation cavities, and the fluid heat-conducting medium in the other circulation cavity flows into the other second annular chamber.

[0017] Furthermore, heat dissipation fins are provided on the storage pipe.

[0018] Furthermore, the driving device includes a linear pushing device and a push rod. The linear pushing device is fixedly connected to the outer side surface of the front outer sleeve. The output end of the linear pushing device is fixedly connected to the push rod. The push rod passes through the storage pipe and is fixedly connected to the piston.

[0019] Furthermore, air pressure balance holes are provided on the plug substrate. The air pressure balance holes communicate the second annular chamber with the external environment. The outer ends of the air pressure balance holes are threadedly connected with plugs;

[0020] When the socket end and the plug end are inserted into each other, the pistons of the two circulation mechanisms move towards the branch pipe at the same time, and the air pressure balance holes are opened, so that the fluid heat-conducting medium in the two inner housings enters the second annular chamber and is in the external space of the heat dissipation cylinder.

[0021] Furthermore, the socket terminal is connected to the first cable through a first wire, and the plug core is connected to the second cable through a second wire.

[0022] Furthermore, a plurality of elastic buckles are fixedly provided at the end of the front outer sleeve. The rear end of the plug substrate is fixedly connected with an elastic plate. The elastic buckles are clamped on the elastic plate.

[0023] The present invention has the following beneficial effects:

[0024] (1) The present invention conducts the heat of the socket terminal and the plug core to the heat dissipation medium in the heat dissipation cylinder for heat dissipation, thereby effectively dispersing the heat of the socket terminal and the plug core into the heat dissipation medium, forming a preliminary heat dissipation and cooling function, ensuring the temperature environment of the socket terminal and the plug core, enabling the plugging contact part to operate normally, and ensuring the stable transmission of electrical signals;

[0025] (2) The shielding sleeve forms an annular shielding layer, which can effectively shield external electromagnetic interference, improve the stability and safety of the electrical connection device during operation. Moreover, the shielding sleeve of the present invention is a uniform annular component, its surface has no openings and no gaps. Compared with the prior art, the present invention can better ensure the integrity and effectiveness of electromagnetic shielding and improve the shielding effect;

[0026] (3) The present invention integrates the functions of effective heat dissipation and comprehensive shielding, improving the comprehensive performance of the electrical connection device. Compared with the prior art, the present invention can achieve efficient heat dissipation while effectively shielding. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram when the socket end and the plug end are separated;

[0029] Figure 3 is a schematic diagram of the axial groove and the circumferential groove;

[0030] Figure 4 is a schematic diagram of the distribution relationship of the heat conduction tubes;

[0031] In the figure: the first cable 1, the socket housing 2, the inner housing 3, the storage tube 4, the piston 5, the push rod 6, the fixed baffle 7, the connecting tube 8, the front end outer sleeve 9, the insulation and sealing ring sleeve 10, the shielding sleeve 11, the linear pushing device 12, the elastic buckle 13, the plug 14, the elastic plate 15, the second cable 16, the first wire 17, the socket terminal 18, the insert core 19, the fluid heat conduction medium 20, the heat dissipation medium 21, the heat conduction tube 22, the axial groove 23, the second wire 24, the plug substrate 25, the heat dissipation cylinder 26, the circumferential groove 27, the connecting ring 28. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the Figures 1 - 4 in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. If not specifically specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0033] It should be noted that in the present invention, "front end" and "front" refer to the end opposite to both the socket end and the plug end. For example, Figure 1 , Figure 2 the right side of the socket end and the left side of the plug end in; "rear end" and "rear" refer to the end opposite to both the socket end and the plug end. For example, Figure 1 , Figure 2 the left side of the socket end and the right side of the plug end in;

[0034] Such as Figure 1 , an electrical connection device includes a socket end and a plug end;

[0035] The socket end includes a socket housing 2, a fixed baffle 7, a front-end outer sleeve 9, a shielding sleeve 11, and socket terminals 18; the front end of the socket housing 2 is fixedly connected to the fixed baffle 7, the front end of the fixed baffle 7 is fixedly connected to the front-end outer sleeve 9 and the shielding sleeve 11, the front-end outer sleeve 9 is sleeved on the shielding sleeve 11, a first annular chamber is formed between the front-end outer sleeve 9 and the shielding sleeve 11, the socket terminals 18 are fixedly connected to the fixed baffle 7, the socket terminals 18 are located inside the shielding sleeve 11, and a second annular chamber is formed between the shielding sleeve 11 and the socket terminals 18;

[0036] The plug end includes a plug substrate 25, and an insulating and sealing ring sleeve 10, a heat dissipation cylinder 26, and a core 19 sleeved in sequence from outside to inside; the front end of the plug substrate 25 is fixedly connected to the insulating and sealing ring sleeve 10, the heat dissipation cylinder 26, and the core 19;

[0037] When the socket end and the plug end are inserted into each other, the core 19 is inserted onto the socket terminals 18, the insulating and sealing ring sleeve 10 is inserted into the first annular chamber, the heat dissipation cylinder 26 is inserted into the second annular chamber and is sleeved on the socket terminals 18, and a heat dissipation medium 21 is provided inside the heat dissipation cylinder 26.

[0038] Specifically, both the socket terminals 18 and the core 19 are prior arts, and they are inserted into each other to achieve functions such as electrical transmission of electricity and signals. The rear end of the socket terminals 18 is fixedly connected to the fixed baffle 7, the rear end of the socket terminals 18 is connected to the first cable 1 through a first wire 17, the first wire 17 passes through the fixed baffle 7, and the first wire 17 and the first cable 1 can be connected through a connector of the prior art; the rear end of the core 19 is fixedly connected to the plug substrate 25, and the rear end of the core 19 is connected to the second cable 16 through a second wire 24, and the second wire 24 passes through the plug substrate 25. In the present invention, when the socket end and the plug end are inserted into each other, the socket terminals 18 and the core 19 are inserted into each other, thereby achieving functions such as electrical transmission of electricity and signals between the first cable 1 and the second cable 16.

[0039] In the present invention, the front-end outer sleeve 9, the shielding sleeve 11, the socket terminals 18, the insulating and sealing ring sleeve 10, the heat dissipation cylinder 26, and the core 19 are coaxially arranged. The first annular chamber is adapted to the insulating and sealing ring sleeve 10. When the socket end and the plug end are inserted into each other, the insulating and sealing ring sleeve 10 is inserted into the first annular chamber, and the end of the insulating and sealing ring sleeve 10 abuts against the fixed baffle 7, the heat dissipation cylinder 26 abuts against the fixed baffle 7, and the shielding sleeve 11 and the front-end outer sleeve 9 abut against the plug substrate 25.

[0040] Such as Figure 1, when looking at the present invention from the inside out, it includes the ferrule 19, socket terminal 18, heat dissipation cylinder 26, shielding sleeve 11, insulation and sealing ring sleeve 10, and front outer sleeve 9 respectively. Among them, the inner wall surface of the heat dissipation cylinder 26 contacts the outer wall surface of the socket terminal 18, thereby forming contact heat conduction, conducting the heat of the socket terminal 18 and the ferrule 19 to the heat dissipation medium 21 in the heat dissipation cylinder 26 for heat dissipation, thus effectively dispersing the heat of the socket terminal 18 and the ferrule 19 into the heat dissipation medium 21, forming a preliminary heat dissipation and cooling function, ensuring the temperature environment of the socket terminal 18 and the ferrule 19, enabling the plugging and contacting part to operate normally, and ensuring the stable transmission of electrical signals. On the basis of the above heat dissipation function, the shielding sleeve 11 forms an annular shielding layer, which can effectively shield external electromagnetic interference, improve the stability and safety of the electrical connection device during operation, and the shielding sleeve 11 of the present invention is a uniform annular component, with no holes or gaps on its surface. Compared with the prior art, the present invention can better ensure the integrity and effectiveness of electromagnetic shielding and improve the shielding effect. For the insulation and sealing ring sleeve 10, it functions as insulation, waterproofing, dustproofing, sealing, etc., and can effectively prevent external impurities such as moisture and dust from entering the second annular chamber. The insulation ensures the use safety. At the same time, the setting of the insulation and sealing ring sleeve 10 can also enhance the structural strength between the socket end and the plug end and avoid bending.

[0041] For the shielding sleeve 11, it can be made of metal materials or alloy materials, while the insulation and sealing ring sleeve 10 can be made of materials such as ceramics, quartz glass, and silicon carbide. A waterproof layer can be additionally laid on the outer wall surface of the insulation and sealing ring sleeve 10 to improve the waterproof performance, and the waterproof layer can be rubber, waterproof coating, etc. The heat dissipation medium 21 can be thermal grease, thermal oil, etc.

[0042] In addition, the front end of the plug substrate 25 can be fixedly connected with a connecting ring 28, and the rear end of the heat dissipation cylinder 26 can be provided with an annular opening adapted to the connecting ring 28. The annular opening of the heat dissipation cylinder 26 is connected to the connecting ring 28 by thread, realizing the functions of convenient installation and filling of the heat dissipation medium 21.

[0043] Further, an annular accommodation cavity is arranged in the cylinder body of the heat dissipation cylinder 26. The accommodation cavity is coaxial with the ferrule 19, and the heat dissipation medium 21 is arranged in the accommodation cavity;

[0044] A plurality of heat conduction tubes 22 are fixedly connected to the heat dissipation cylinder 26. The heat conduction tubes 22 are distributed in a plurality of ring columns along the axial direction of the heat dissipation cylinder 26. Each ring column is evenly provided with a plurality of the heat conduction tubes 22 along the circumferential direction of the heat dissipation cylinder 26. The heat conduction tubes 22 are internally provided with the heat dissipation medium 21 and communicate with the accommodation cavity.

[0045] The accommodation cavity is arranged circumferentially around the ferrule 19 and wraps the socket terminal 18 and the ferrule 19. A plurality of heat pipes 22 function to increase the heat dissipation area. One end of the heat pipe 22 is closed, and the other end is open and fixedly connected to the heat dissipation cylinder 26. For the arrangement of the heat pipes 22, for example, there are 15 heat pipes 22. In the axial direction of the heat dissipation cylinder 26, there are 3 rows of heat pipes 22 distributed, and each row is provided with 5 heat pipes 22, and these 5 heat pipes 22 are evenly distributed circumferentially around the heat dissipation cylinder 26.

[0046] Furthermore, a plurality of axial grooves 23 are provided on the inner wall surface of the shielding sleeve 11, and a plurality of circumferential grooves 27 are provided on the side surfaces of the axial grooves 23. The plurality of axial grooves 23 correspond to the positions of the plurality of heat pipes 22 one by one, and the plurality of circumferential grooves 27 correspond to the heat pipes 22 on the plurality of rows one by one;

[0047] When the socket end is inserted into the plug end, the end of the heat pipe 22 is located in the axial groove 23. By rotating the plug substrate 25, the heat pipe 22 is moved into the circumferential groove 27, so that an axial constraint is formed between the socket end and the plug end.

[0048] Such as Figure 3 、 Figure 4 , the axial grooves 23 are arranged on the inner wall surface of the shielding sleeve 11 and are distributed along the axial direction of the shielding sleeve 11. The circumferential grooves 27 are formed by opening the side surfaces of the axial grooves 23. When the socket end is inserted into the plug end, the heat pipe 22 moves along the corresponding axial groove 23. The heat pipe 22 and the axial groove 23 form a structure similar to a spline. When the socket end and the plug end are inserted in place, the heat pipe 22 is exactly in the position of the circumferential groove 27. At this time, by rotating the plug end, that is, rotating the plug substrate 25, the heat pipe 22 is snapped into the circumferential groove 27, thereby forming an axial constraint structure. The constraint structure of the circumferential groove 27 and the heat pipe 22 can enable the socket end and the plug end to form a tensile structure, further improving the stability of the present invention during use, preventing the socket end and the plug end from accidentally falling off, and thus ensuring the stability of electrical transmissions such as power and signals.

[0049] In addition, a plurality of elastic buckles 13 are fixedly provided at the end of the front outer sleeve 9, and an elastic plate 15 is fixedly connected to the rear end of the plug substrate 25. The elastic buckles 13 are snapped onto the elastic plate 15. The elastic buckles 13 are a prior art, such as metal elastic sheets, and a clamping portion is provided at the end. The elastic plate 15 can be a rubber plate.

[0050] During the specific installation of the present invention, first insert the socket end and the plug end into each other, and then snap them onto the elastic plate 15 through the elastic buckle 13 to form a snap connection structure. The elastic force of the elastic plate 15 can tightly connect the socket end and the plug end. Then rotate the plug end to snap the heat conduction tube 22 into the circumferential groove 27 to form an axial tensile structure.

[0051] Due to the use scenarios in some high-temperature environments, relying solely on the heat dissipation function of the heat dissipation medium 21 cannot maintain the stable operation of the connector. Therefore, the present invention also designs a heat circulation export function, which is specifically as follows:

[0052] Furthermore, a fluid heat conduction medium 20 is provided outside the heat dissipation cylinder 26 in the second annular chamber. The second annular chamber is connected to a circulation mechanism, and the circulation mechanism is used to circulate the fluid heat conduction medium 20 for heat dissipation.

[0053] The fluid heat conduction medium 20 is a prior art, such as liquid silicone, heat conduction oil, heat conduction gel, etc., which has good heat conduction performance, fluidity and insulation. By circulating the fluid heat conduction medium 20 through the circulation mechanism, the fluid heat conduction medium 20 dissipates heat outside and absorbs heat in the second chamber, thereby taking out the heat of the insert 19 and the socket terminal 18, ensuring the temperature environment of the insert 19 and the socket terminal 18, and further improving the working stability and reliability of the electrical connection device.

[0054] The circulation mechanism of the present invention specifically includes the following structure: The circulation mechanism includes a storage tube 4, a piston 5, an inner housing 3 and a connecting tube 8;

[0055] The socket housing 2 is provided with an opening groove, and the end face of the opening groove is fixedly connected to the fixed baffle 7. An installation cavity is formed between the fixed baffle 7 and the opening groove. The inner housing 3 is fixedly arranged in the installation cavity. A circulation cavity is arranged inside the inner housing 3. The outer wall surface of the socket housing 2 is fixedly connected to the storage tube 4. The storage tube 4 is connected to a branch pipe, and the branch pipe passes through the socket housing 2 and the inner housing 3 and communicates with the circulation cavity. The piston 5 is slidably arranged in the storage tube 4, and the piston 5 is connected to a driving device for driving its movement. A through hole is opened on the fixed baffle 7, and the connecting tube 8 is fixedly connected in the through hole. Both ends of the connecting tube 8 communicate with the second annular chamber and the circulation cavity respectively;

[0056] The fluid heat conduction medium 20 is arranged between the piston 5 and the branch pipe, inside the branch pipe and inside the circulation cavity;

[0057] There are two such circulation mechanisms. When the pistons 5 of the two circulation mechanisms move in opposite directions, the fluid heat-conducting medium 20 in one of the second annular chambers flows into one of the circulation chambers, and the fluid heat-conducting medium 20 in the other circulation chamber flows into the other second annular chamber.

[0058] The two circulation mechanisms are symmetrically arranged. By the sliding of the pistons 5, the fluid heat-conducting medium 20 is sucked or extruded, so that the fluid heat-conducting medium 20 enters or exits the second chamber.

[0059] The specific implementation process is as follows: In a high-temperature environment, through the reciprocating and opposite movement of the pistons 5 of the two circulation mechanisms, the fluid heat-conducting medium 20 is caused to flow. Part of the fluid heat-conducting medium 20 flows through the storage pipe 4, the branch pipe, the circulation chamber, and the connecting pipe 8 into the second chamber; and another part of the fluid heat-conducting medium 20 flows through the second chamber, the connecting pipe 8, the circulation chamber, and the branch pipe into the storage pipe 4; Therefore, at this time, for the two storage pipes 4, one stores more fluid heat-conducting medium 20, and the other stores less fluid heat-conducting medium 20; By dissipating the heat of the storage pipe 4, the heat of the fluid heat-conducting medium 20 is discharged to the external environment, and the cooled fluid heat-conducting medium 20 returns to the second chamber to continue absorbing heat, forming a reciprocating cycle of heat absorption - heat release, which can effectively export and disperse the heat of the socket terminal 18 and the plug core 19.

[0060] For the heat dissipation of the storage pipe 4, heat dissipation fins can be provided on its outer surface. The present invention realizes the heat dissipation of the storage pipe 4 through the following several implementation methods:

[0061] 1. For mobile devices such as vehicles, multiple unit trains, and trains, an air inlet can be introduced on the vehicle frame, and the air inlet is aimed at the storage pipe 4. Therefore, during the operation of the vehicle, the heat dissipation of the storage pipe 4 and the fluid heat-conducting medium 20 is formed by the external air flow.

[0062] 2. For fixed devices, the overall heat dissipation of the storage pipe 4, the fluid heat-conducting medium 20, and the electrical connector can be realized by arranging a fan.

[0063] 3. For the situation where the external temperature is normal and the electrical connector needs to carry a large current, the storage pipe 4 can be exposed, and natural heat dissipation can be utilized through the external air convection.

[0064] Furthermore, the driving device includes a linear pushing device 12 and a push rod 6. The linear pushing device 12 is fixedly connected to the outer side surface of the front outer sleeve 9. The output end of the linear pushing device 12 is fixedly connected to the push rod 6. The push rod 6 passes through the storage pipe 4 and is fixedly connected to the piston 5.

[0065] The linear driving device 12 is a prior art, such as a micro electric push rod or a micro linear motor. The linear driving devices 12 of the two circulation mechanisms are controlled by a PLC program in the prior art. When the electrical connector works normally, the two linear driving devices 12 drive the piston 5 to reciprocate in opposite directions through the push rod 6, so as to make the fluid heat conduction medium 20 circulate and dissipate heat.

[0066] Furthermore, an air pressure balance hole is provided on the plug substrate 25. The air pressure balance hole communicates the second annular chamber with the external environment, and a plug 14 is threadedly connected to the outer end of the air pressure balance hole;

[0067] When the socket end is inserted into the plug end, the pistons 5 of the two circulation mechanisms move towards the branch pipe at the same time, and the air pressure balance hole is opened, so that the fluid heat conduction medium 20 in the two inner shells 3 enters the second annular chamber and is in the external space of the heat dissipation cylinder 26.

[0068] Since the fluid heat conduction medium 20 is involved in the process of filling the second chamber, the present invention designs a related process, which is as follows:

[0069] As Figure 2 , when the socket end and the plug end are not inserted, the piston 5 is at the maximum position away from the branch pipe. Under the action of the atmospheric pressure, the fluid heat conduction medium 20 is static in the connecting pipe 8. After the socket end is inserted into the plug end, first remove the plug 14, and then the two linear driving devices 12 drive the piston 5 to move towards the branch pipe through the push rod 6, so that the fluid heat conduction medium 20 enters the second chamber and fills the space between the inner wall surface of the shielding sleeve 11 and the outer wall surface of the heat dissipation cylinder 26. In this process, air is discharged through the air pressure balance hole to balance the air pressure. After completion, there is still a gap between the piston 5 and the branch pipe, and this gap is sufficient for the movement stroke required by the piston 5 during the circulation of the fluid heat conduction medium 20.

[0070] In view of the fact that the present invention needs to fill the fluid heat conduction medium 20 into the plug end, the electrical connector of the present invention is applicable to scenarios that require a long-term connection state, such as data center server cabinets, uninterruptible power supply systems, etc.; and is not applicable to scenarios that require frequent plugging and unplugging, such as household appliances, portable devices, etc.

[0071] The above embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, variations, modifications, and substitutions made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An electrical connection device, characterized in that, It includes a socket end and a plug end; The socket end includes a socket housing (2), a fixed baffle (7), a front outer sleeve (9), a shielding sleeve (11) and socket terminals (18); the front end of the socket housing (2) is fixedly connected to the fixed baffle (7), the front end of the fixed baffle (7) is fixedly connected to the front outer sleeve (9) and the shielding sleeve (11), the front outer sleeve (9) is sleeved on the shielding sleeve (11), a first annular chamber is formed between the front outer sleeve (9) and the shielding sleeve (11), the socket terminals (18) are fixedly connected to the fixed baffle (7), the socket terminals (18) are located inside the shielding sleeve (11), and a second annular chamber is formed between the shielding sleeve (11) and the socket terminals (18); The plug end includes a plug substrate (25), and an insulating and sealing ring sleeve (10), a heat dissipation cylinder (26) and a core (19) which are sleeved in sequence from outside to inside; the front end of the plug substrate (25) is fixedly connected to the insulating and sealing ring sleeve (10), the heat dissipation cylinder (26) and the core (19); When the socket end and the plug end are inserted into each other, the core (19) is inserted onto the socket terminals (18), the insulating and sealing ring sleeve (10) is inserted into the first annular chamber, the heat dissipation cylinder (26) is inserted into the second annular chamber and is sleeved on the socket terminals (18), and a heat dissipation medium (21) is arranged inside the heat dissipation cylinder (26); An annular accommodation cavity is arranged inside the cylinder body of the heat dissipation cylinder (26), the accommodation cavity is coaxial with the core (19), and the heat dissipation medium (21) is arranged inside the accommodation cavity; A plurality of heat conduction tubes (22) are fixedly connected to the heat dissipation cylinder (26), the heat conduction tubes (22) are distributed in a plurality of annular rows along the axial direction of the heat dissipation cylinder (26), and a plurality of the heat conduction tubes (22) are evenly distributed along the circumferential direction of the heat dissipation cylinder (26) in each annular row. The heat conduction tubes (22) are internally provided with the heat dissipation medium (21) and communicate with the accommodation cavity; A plurality of axial grooves (23) are arranged on the inner wall surface of the shielding sleeve (11), a plurality of circumferential grooves (27) are arranged on the side surfaces of the axial grooves (23), the plurality of axial grooves (23) correspond to the plurality of heat conduction tubes (22) in position one by one, and the plurality of circumferential grooves (27) correspond to the heat conduction tubes (22) in the plurality of annular rows one by one; When the socket end and the plug end are inserted into each other, the end part of the heat conduction tube (22) is located inside the axial groove (23), and by rotating the plug substrate (25), the heat conduction tube (22) is moved into the circumferential groove (27), so that an axial constraint is formed between the socket end and the plug end.

2. The electrical connection device according to claim 1, characterized in that, A fluid heat conduction medium (20) is arranged outside the heat dissipation cylinder (26) inside the second annular chamber, and the second annular chamber is communicated with a circulation mechanism, and the circulation mechanism is used for circulating the fluid heat conduction medium (20) for heat dissipation.

3. An electrical connection device according to claim 2, characterized in that, The circulation mechanism includes a storage tube (4), a piston (5), an inner housing (3), and a connecting tube (8); The socket housing (2) is provided with an opening groove, and the end face of the opening groove is fixedly connected to the fixed baffle (7). An installation cavity is formed between the fixed baffle (7) and the opening groove. The inner housing (3) is fixedly arranged in the installation cavity. A circulation cavity is arranged inside the inner housing (3). The outer wall surface of the socket housing (2) is fixedly connected to the storage tube (4). The storage tube (4) is communicated with a branch pipe. The branch pipe passes through the socket housing (2) and the inner housing (3) and is communicated with the circulation cavity. The piston (5) is slidably arranged in the storage tube (4). The piston (5) is connected to a driving device for driving its movement. A through hole is opened on the fixed baffle (7), and the connecting tube (8) is fixedly connected inside the through hole. The two ends of the connecting tube (8) are respectively communicated with the second annular chamber and the circulation cavity; The fluid heat-conducting medium (20) is arranged between the piston (5) and the branch pipe, inside the branch pipe, and inside the circulation cavity; There are two circulation mechanisms. When the pistons (5) of the two circulation mechanisms move in opposite directions, the fluid heat-conducting medium (20) in one of the second annular chambers flows into one of the circulation cavities, and the fluid heat-conducting medium (20) in the other circulation cavity flows into the other second annular chamber.

4. An electrical connection device according to claim 3, characterized in that Heat dissipation fins are arranged on the storage tube (4).

5. An electrical connection device according to claim 3, characterized in that, The driving device includes a linear pushing device (12) and a push rod (6). The linear pushing device (12) is fixedly connected to the outer side surface of the front outer sleeve (9). The output end of the linear pushing device (12) is fixedly connected to the push rod (6). The push rod (6) passes through the storage tube (4) and is fixedly connected to the piston (5).

6. An electrical connection device according to claim 3, characterized in that, Air pressure balance holes are arranged on the plug substrate (25). The air pressure balance holes are communicated with the second annular chamber and the external environment. The outer end of the air pressure balance hole is threadedly connected to a plug (14); When the socket end and the plug end are inserted into each other, the pistons (5) of the two circulation mechanisms move towards the branch pipe at the same time, and the air pressure balance holes are opened, so that the fluid heat-conducting medium (20) in the two inner housings (3) enters the second annular chamber and is in the external space of the heat dissipation cylinder (26).

7. The electrical connection device according to claim 1, characterized in that, The socket terminal (18) is connected to the first cable (1) through the first wire (17), and the plug core (19) is connected to the second cable (16) through the second wire (24).

8. An electrical connection device according to claim 1, wherein, A plurality of elastic buckles (13) are fixedly arranged at the end of the front outer sleeve (9). The rear end of the plug substrate (25) is fixedly connected to an elastic plate (15). The elastic buckles (13) are clamped on the elastic plate (15).

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