A liquid-cooled high-current connector and method

Abstract

This invention discloses a liquid-cooled high-current connector and method. The liquid-cooled high-current connector includes: a cable fixing assembly for fixing a cable; a terminal mounting assembly connected to the cable fixing assembly, providing support for the terminal; and a liquid-cooling assembly comprising: a fixing sleeve detachably connected to the terminal mounting assembly, the outer surface of the fixing sleeve having a miniature cooling device; and a liquid-cooled inner core installed inside the fixing sleeve, the outer surface of the inner core contacting the inner surface of the fixing sleeve, and fitted onto the terminal mounting assembly. The purpose of this invention is to solve the problems of low heat exchange efficiency and poor cooling effect of existing liquid-cooled terminal structures.

Description

Technical Field

[0001] This invention relates to the field of quick connector technology, specifically to a liquid-cooled high-current connector and method. Background Technology

[0002] Radio frequency coaxial connectors (hereinafter referred to as RF connectors) are generally considered to be components that are attached to cables or installed on instruments, serving as electrical connections or disconnections between transmission lines. They belong to the category of mechatronics products. Essentially, they act as bridges.

[0003] RF connectors are widely used in the automotive industry. Because there are many circuit cables in a car, a large number of RF connectors are needed. Although RF connectors have high transmission efficiency, they also have obvious drawbacks. After the plug and socket of an RF connector are connected, the power and current are relatively high during operation. Therefore, the plug and socket are prone to overheating, which can lead to circuit damage and short circuits, affecting the use of the product.

[0004] The invention patent with application number CN202111643768.7 and publication number CN114161972A (hereinafter referred to as "Prior Art 1") discloses a terminal liquid cooling structure for a high-current connector, comprising: a U-shaped water pipe made of a thermally conductive material; a metal box for covering the U-shaped water pipe; two DC charging terminals respectively disposed on both sides of the metal box, and the DC charging terminals having a retaining plate for limiting the metal box; an insulating plate disposed on the retaining plate of the two DC charging terminals for insulating the bottom of the metal box from the DC charging terminals; and two insulating pads respectively disposed on the retaining plate of the two DC charging terminals for insulating the side wall of the metal box from the DC charging terminals.

[0005] The specification of prior art 1 discloses a terminal liquid cooling structure for a high current connector, which uses a U-shaped water pipe to exchange heat with the DC charging terminal. However, in practical applications, the heat exchange efficiency of water is very low, resulting in poor cooling effect on the charging terminal. Summary of the Invention

[0006] This invention provides a liquid-cooled high-current connector and method, aiming to solve the problems of low heat exchange efficiency and poor cooling effect of the terminal liquid-cooled structure in the prior art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A liquid-cooled high-current connector and method are disclosed, comprising: a cable fixing assembly for fixing a cable; a terminal mounting assembly connected to the cable fixing assembly for providing support for a terminal, wherein the terminal and cable are electrically connected after the terminal mounting assembly and the cable fixing assembly are connected; and a liquid-cooling assembly comprising: a fixing sleeve detachably connected to the terminal mounting assembly, wherein a miniature cooling device is provided on the outer surface of the fixing sleeve; a liquid-cooled inner core installed inside the fixing sleeve, wherein the outer surface of the liquid-cooled inner core contacts the inner surface of the fixing sleeve and is used to be fitted onto the terminal mounting assembly; a mounting groove provided on the liquid-cooled inner core; and a cooling tank installed in the mounting groove, wherein the cooling tank is used to hold coolant; the cooling tank is provided with an inlet and an outlet, wherein an inlet pipe and an outlet pipe are respectively connected to the inlet and outlet, the inlet pipe and the outlet pipe passing through the liquid-cooled inner core and the fixing sleeve in sequence and then connected to the miniature cooling device; the miniature cooling device is used to circulate and cool the coolant.

[0009] Furthermore, the liquid-cooled core is provided with several heat dissipation holes and a mounting hole. A rotating part is provided at the opening of the mounting hole, and a motor is installed in the mounting hole. The output end of the motor is connected to a rotating shaft. One end of the rotating shaft is fixedly connected to the output end of the motor, and the other end is rotatably connected to the rotating part. Several cooling fans are provided on the rotating shaft.

[0010] Furthermore, a terminal fixing assembly is provided below the terminal mounting assembly. The terminal fixing assembly includes a cross-shaped plate, which is used to clamp between several terminals; a back plate, which is used to cooperate with the cross-shaped plate to clamp and fix several terminals, and is used to be inserted into the terminal mounting assembly; and a cooling plate, which is used to be installed on the cross-shaped plate and the back plate, and is used to be in contact with the terminals and to cool the terminals.

[0011] Furthermore, a load-bearing plate is connected to the cross-shaped plate, and the upper end face of the load-bearing plate is in contact with the fixing sleeve.

[0012] Furthermore, the terminal includes an insulating heat-conducting sleeve, which has a slot inside. The insulating heat-conducting sleeve has an open front end and a U-shaped rear end. The insulating heat-conducting sleeve is used to install inside the terminal mounting assembly. The metal terminal includes an upper terminal and a lower terminal. The upper terminal and the lower terminal are connected to form an L-shaped structure. The upper terminal is used to be inserted into the slot, and the lower terminal is used to be covered by the rear end of the U-shaped insulating heat-conducting sleeve.

[0013] Furthermore, the back plate is provided with several extrusion components, including a T-shaped pressure plate, which is installed on the back plate and the cross-shaped plate; and two support plates, both of which are installed at the bottom of the T-shaped pressure plate; the cooling element is provided on both the T-shaped pressure plate and the support plate.

[0014] Furthermore, the retaining sleeve and the terminal mounting assembly are detachably connected via a snap-fit ​​assembly.

[0015] Furthermore, several positioning protrusions are provided below the terminal mounting assembly.

[0016] Furthermore, a positioning rod is provided at the bottom of the liquid-cooled inner core, and a positioning groove is provided inside the terminal mounting assembly. The positioning rod is used to cooperate with the positioning groove.

[0017] A cooling method for cooling metal terminals includes the following steps:

[0018] S1: Inject cryogenic coolant into the cooling tank;

[0019] S2: Insert the cooling tank into the mounting slot;

[0020] S3: Insert the liquid-cooled core into the terminal mounting assembly;

[0021] S4: Install both ends of the liquid inlet pipe onto the micro-refrigeration device and the liquid inlet respectively, and install both ends of the liquid outlet pipe onto the micro-refrigeration device and the liquid outlet respectively.

[0022] S5: Start the micro-cooling device. The micro-cooling device has two functions: one is to circulate the coolant, and the other is to cool the coolant.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention mainly includes a cable fixing assembly and a terminal mounting assembly. The cable fixing assembly secures the cable, and then the terminal mounting assembly is installed together with it. The main function of the terminal mounting assembly is to install the terminals. After the terminal mounting assembly and the cable fixing assembly are plugged in, the end of the cable is electrically connected to the end of the terminal. When installing the liquid cooling assembly, firstly, a fixing sleeve is placed on the terminal mounting assembly, and then the liquid cooling core is installed inside the fixing sleeve. At this time, the outer surface of the liquid cooling core is in contact with the inner surface of the fixing sleeve, and the fixing sleeve provides contact with the liquid cooling core. The core is fixed in place, and the inner surface of the liquid-cooled core contacts the terminal mounting assembly of the mounting terminals. When in use, the micro-cooling device is turned on, which causes the coolant in the cooling tank to be drawn out from the outlet pipe and then re-cooled back into the tank from the inlet pipe. During this process, the micro-cooling device cools the coolant, ensuring that the coolant re-entering the cooling tank from the inlet pipe remains at a low temperature. The temperature is conducted from the liquid-cooled core to the terminals in the terminal mounting assembly, continuously cooling the terminals to ensure that the terminals will not overheat and be damaged due to excessive power after being electrically connected to the socket. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the terminal mounting assembly and the liquid-cooled inner core in this invention.

[0027] Figure 2 This is a schematic diagram of the terminal mounting assembly in this invention.

[0028] Figure 3 This is a schematic diagram showing the connection relationship between the fixing sleeve and the terminal mounting assembly in this invention.

[0029] Figure 4 This is an exploded view of the terminal mounting assembly and the terminal fixing assembly in this invention.

[0030] Figure 5 This is a schematic diagram illustrating the mating relationship between the terminal and the terminal fixing assembly in this invention.

[0031] Figure 6 This is a schematic diagram showing the connection relationship between the cross-shaped plate and the back plate in this invention.

[0032] Figure 7 This is a cross-sectional view of the present invention.

[0033] In the diagram, 101-terminal mounting assembly, 102-fixing sleeve, 103-liquid cooling core, 104-mounting slot, 105-cooling tank, 106-liquid inlet, 107-liquid outlet, 108-liquid inlet pipe, 109-liquid outlet pipe, 110-mounting hole, 111-rotating part, 112-motor, 113-shaft, 114-cross-shaped plate, 115-back plate, 116-cooling element, 117-load-bearing plate, 118-insulating heat-conducting sleeve, 119-slot, 120 - Metal terminal, 121- Upper terminal, 122- Lower terminal, 123- T-shaped pressure plate, 124- Support plate, 125- Positioning protrusion, 126- Positioning rod, 127- Mounting housing, 128- Mounting through hole, 129- Horizontal mounting part, 130- Vertical mounting part, 131- Vertical mounting area, 132- Cross-shaped area, 133- Through hole, 134- Mounting block, 135- Mounting recess, 136- Hook, 137- Hook hole, 138- Heat dissipation hole. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments. These embodiments are merely some, not all, of the embodiments of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the protection scope of the present invention.

[0035] Please see Figure 1 and Figure 7 As shown, this embodiment discloses a liquid-cooled high-current connector and method, including: a cable fixing assembly for fixing a cable; a terminal mounting assembly 101 connected to the cable fixing assembly, the terminal mounting assembly 101 providing support for the terminal, and the terminal being electrically connected to the cable after the terminal mounting assembly 101 is connected to the cable fixing assembly; and a liquid cooling assembly including: a fixing sleeve 102 detachably connected to the terminal mounting assembly 101, the outer surface of the fixing sleeve 102 being provided with a miniature cooling device; and a liquid-cooled inner core 103 installed inside the fixing sleeve 102. The outer surface of 103 contacts the inner surface of the fixing sleeve 102 and is used to be fitted onto the terminal mounting assembly 101; the mounting groove 104 is provided on the liquid-cooled inner core 103; the cooling tank 105 is used to be installed in the mounting groove 104, and the interior of the cooling tank 105 is used to hold coolant; the cooling tank 105 is provided with an inlet 106 and an outlet 107, and an inlet pipe 108 and an outlet pipe 109 are respectively connected to the inlet 106 and the outlet 107. The inlet pipe 108 and the outlet pipe 109 pass through the liquid-cooled inner core 103 and the fixing sleeve 102 in sequence and are connected to the micro-refrigeration device; the micro-refrigeration device is used to circulate and cool the coolant.

[0036] As an optional implementation, in this embodiment, the cable fixing assembly is prior art, and its structure is the same as that of the housing and connecting pipe in application number CN201821655521.0. This invention does not involve any improvement to its structure, and will not be described in detail here.

[0037] As an optional implementation, in this embodiment, the micro-cooling device is a micro-cooler in the prior art. The present invention does not involve any improvement to its structure, and will not be described in detail here.

[0038] This invention mainly includes a cable fixing assembly and a terminal mounting assembly 101. The cable fixing assembly is used to fix the cable, and then the terminal mounting assembly 101 is installed together with it. The main function of the terminal mounting assembly 101 is to install the terminals. When the terminal mounting assembly 101 is inserted into the cable fixing assembly, the end of the cable is electrically connected to the end of the terminal. When installing the liquid cooling assembly, firstly, the fixing sleeve 102 is placed on the terminal mounting assembly 101, and then the liquid cooling inner core 103 is installed inside the fixing sleeve 102. At this time, the outer surface of the liquid cooling inner core 103 is in contact with the inner surface of the fixing sleeve 102, and the fixing sleeve 102 provides liquid cooling. The liquid-cooled inner core 103 is fixed, and the inner surface of the liquid-cooled inner core 103 is in contact with the terminal mounting assembly 101 for mounting terminals. In use, the micro-cooling device is turned on, which causes the coolant in the cooling tank 105 to be drawn out from the outlet pipe 109 and then re-cooled back into the cooling tank 105 from the inlet pipe 108. During this process, the micro-cooling device cools the coolant to ensure that the coolant re-entering the cooling tank 105 from the inlet pipe 108 remains at a low temperature. The temperature is conducted from the liquid-cooled inner core to the terminals in the terminal mounting assembly 101, continuously cooling the terminals to ensure that the terminals will not be damaged due to excessive power after being electrically connected to the socket.

[0039] Please see Figure 4 and Figure 5 As shown, in some embodiments, a terminal fixing assembly is provided below the terminal mounting assembly 101. The terminal fixing assembly includes a cross-shaped plate 114, which is used to clamp between a plurality of terminals; a back plate 115, which is used to cooperate with the cross-shaped plate 114 to clamp and fix the plurality of terminals, and is used to be inserted into the terminal mounting assembly 101; and a cooling plate 116, which is used to be mounted on the cross-shaped plate 114 and the back plate 115, and is used to adhere to the terminals and cool the terminals.

[0040] As an optional implementation, in this embodiment, the terminal mounting assembly 101 includes a mounting housing 127. The mounting housing 127 has four mounting through holes 128 inside. The four mounting through holes 128 are arranged in pairs, with the length of one pair of mounting through holes 128 being greater than the length of the other pair. This arrangement is primarily for facilitating the mounting arrangement of terminals. The mounting housing 127 also includes two parts: a horizontal mounting portion 129 and a vertical mounting portion 130. The horizontal mounting portion 129 and the vertical mounting portion 130 are connected to form an integral assembly. The structure includes four mounting holes 128 on the horizontal mounting section 129, and four vertical mounting areas 131 on the vertical mounting section 130. These four vertical mounting areas 131 are arranged in pairs, with one pair located at the openings of the two longer mounting holes 128 and the other pair located at the openings of the two shorter mounting holes 128. The terminals have an overall L-shaped structure, with two sets of terminals, each set containing two terminals. One set consists of long terminals, and the other set consists of short terminals. The two long terminals are respectively mounted on the two longer holes. Inside the mounting through-holes 128, two short terminals are respectively installed in the two shorter mounting through-holes 128. This arrangement is not only for ease of terminal installation, but more importantly, when the heads of the four terminals are installed inside the four mounting through-holes 128, the tails of the four terminals form a cross-shaped area 132. This cross-shaped area matches the cross-shaped plate 114. The installation of the tails of the four terminals is not stable, therefore, the terminal fixing assembly is needed to secure the tails of the four terminals. In actual use, the cross-shaped plate 114 is inserted... Entering the cross-shaped area 132, the cross-shaped plate 114 provides support for the tails of the four terminals, and the cross-shaped plate 114 clamps two long terminals through the back plate 115. The cross-shaped plate 114 clamps two short terminals through the horizontal mounting part 129. Since the above embodiment has already cooled the head of the terminal through the liquid-cooled inner core 103, in order to ensure that the terminal can be cooled better, several cooling plates 116 are provided on the cross-shaped plate 114 and the back plate 115 to cool and exchange heat at the tail of the terminal, so that the cooling effect of the terminal will be better.

[0041] It should be noted that in this embodiment, the cooling chip 116 is a semiconductor cooling chip 116 in the prior art. The reason for choosing the semiconductor cooling chip 116 is that it is possible to manufacture a semiconductor cooling chip 116 that conforms to the size of the actual carrier. This invention does not involve any improvement to the structure or usage method of the semiconductor cooling chip 116, and will not be described in detail here.

[0042] Please see Figure 3As shown, in some embodiments, the liquid-cooled inner core 103 is provided with a plurality of heat dissipation holes 138 and a mounting hole 110. A rotating part 111 is provided at the opening of the mounting hole 110. A motor 112 is installed in the mounting hole 110. The output end of the motor 112 is connected to a rotating shaft 113. One end of the rotating shaft 113 is fixedly connected to the output end of the motor 112, and the other end is rotatably connected to the rotating part 111. A plurality of cooling fans are provided on the rotating shaft 113.

[0043] As an optional implementation, in this embodiment, the liquid-cooled inner core 103 has four through holes 133, which are connected by several heat dissipation holes 138. When the micro-cooling device is working, in order to improve the heat transfer efficiency, heat dissipation holes 138 are opened on the liquid-cooled inner core 103. This setting can effectively dissipate heat from the terminals. The motor 112 can be started to drive the cooling fan to rotate. The cooling fan quickly conducts the cold air, which is then blown from the heat dissipation holes 138 to the four mounting slots 104. While cooling the mounting slots 104, it also provides ventilation.

[0044] Please see Figure 6 As shown, in some embodiments, a load-bearing plate 117 is connected to the cross-shaped plate 114, and the upper end face of the load-bearing plate 117 contacts the fixing sleeve 102; the purpose of setting the load-bearing plate 117 is to support the fixing sleeve 102 and improve the stability of the fixing sleeve 102 installation; in actual use, the fixing sleeve 102 is connected to the load-bearing plate 117 through a sliding component.

[0045] As an optional implementation, in this embodiment, the sliding component includes a sliding protrusion disposed at the bottom of the fixed sleeve 102 and a sliding recess disposed on the load-bearing plate 117, with the sliding protrusion and the sliding recess slidingly engaged; the advantage of this arrangement is that it facilitates the installation of the fixed sleeve 102 and enhances the stability of the fixed sleeve 102 after installation.

[0046] Please see Figure 5 As shown, in some embodiments, the terminal includes an insulating heat-conducting sleeve 118, which has a slot 119 inside. The insulating heat-conducting sleeve 118 has an open head and a U-shaped tail. The insulating heat-conducting sleeve 118 is used to be installed inside the terminal mounting assembly 101. The metal terminal 120 includes an upper terminal 121 and a lower terminal 122. The upper terminal 121 and the lower terminal 122 are connected to form an L-shaped structure of the metal terminal 120. The upper terminal 121 is used to be inserted into the slot 119, and the lower terminal 122 is used to be covered by the tail end of the U-shaped insulating heat-conducting sleeve 118.

[0047] As an optional implementation, in this embodiment, the insulating heat-conducting sleeve 118 is made of polyurethane material, and the metal terminal 120 is inserted into the insulating heat-conducting sleeve 118. The low temperature generated by the coolant will pass through the cooling tank 105, the liquid-cooled inner core 103 and the insulating heat-conducting sleeve 118 in sequence and be conducted to the upper terminal 121. The low temperature generated by the semiconductor cooling chip 116 will be conducted to the insulating heat-conducting sleeve 118 and finally to the lower terminal 122, so that the metal terminal 120 as a whole is subjected to low temperature to avoid overheating.

[0048] Please see Figure 6 As shown, in some embodiments, a plurality of extrusion assemblies are provided on the back plate 115. The extrusion assemblies include a T-shaped pressure plate 123, which is installed on the back plate 115 and the cross-shaped plate 114; and two support plates 124, both of which are installed on the bottom of the T-shaped pressure plate 123. The cooling element 116 is provided on both the T-shaped pressure plate 123 and the support plate 124.

[0049] In actual use, the T-shaped pressure plate 123 consists of two parts: a horizontal part and a vertical part. The vertical part and the horizontal part are connected to form an integrated T-shaped pressure plate 123. Both the vertical part and the horizontal part are equipped with cooling plates 116. After the four terminals are installed, the vertical part is located at the tail end of the U-shaped insulating heat-conducting sleeve 118. The tail end of the U-shaped insulating heat-conducting sleeve 118 clamps the vertical part. The cooling plates 116 on the vertical part are in contact with the lower terminal 122 to cool the lower terminal 122. The main function of the horizontal part is to connect with the cross plate and the back plate 115. The support plate 124 is in contact with the lower end face of the U-shaped insulating heat-conducting sleeve 118. The cooling plates 116 on the support plate 124 conduct low temperature to the insulating heat-conducting sleeve 118 and finally act on the lower terminal 122.

[0050] Please see Figure 3 As shown, in some embodiments, the retaining sleeve 102 and the terminal mounting assembly 101 are detachably connected via a snap-fit ​​assembly.

[0051] As an optional implementation, in this embodiment, the snap-fit ​​assembly includes a mounting block 134 and a mounting recess 135. The end of the mounting block 134 is provided with a hook 136, and the mounting block 134 is located on the top of the fixing sleeve 102. The mounting recess 135 is located above the terminal mounting assembly 101, and the mounting recess 135 is provided with a snap hole 137. The snap hook 136 is used to cooperate with the snap hole 137, and the snap hook 136 is an elastic element.

[0052] In actual use, when the fixing sleeve 102 slides on the load-bearing plate 117 and fits against the terminal mounting assembly 101, the hook 136 enters the mounting recess 135. The end of the hook 136 has a guide slope. The hook 136 is bent by the pressure of the mounting recess 135 until the fixing sleeve 102 and the terminal mounting assembly 101 are completely fitted together. Then the hook 136 enters the locking hole 137 and the hook 136 no longer bends perpendicular to the mounting block 134. Finally, the detachable connection between the fixing sleeve 102 and the terminal mounting assembly 101 is completed.

[0053] Please see Figure 4 As shown, in some embodiments, a plurality of positioning protrusions 125 are provided below the terminal mounting assembly 101; the purpose of providing the positioning protrusions 125 is to facilitate the alignment between the terminal mounting assembly 101 and the socket.

[0054] In some embodiments, the bottom of the liquid-cooled inner core 103 is provided with a positioning rod 126, and the terminal mounting assembly 101 is provided with a positioning groove, and the positioning rod 126 is used to cooperate with the positioning groove.

[0055] Please see Figure 7 As shown, in actual use, the purpose of setting the positioning rod 126 is to facilitate the installation of the liquid-cooled inner core 103, so that the liquid-cooled inner core 103 has a guide during installation and prevents the liquid-cooled inner core 103 from shaking after installation.

[0056] In this embodiment, a cooling method is also involved, the purpose of which is to cool the metal terminal 120, and the specific steps are as follows:

[0057] S1: Inject cryogenic coolant into cooling tank 105;

[0058] S2: Insert the cooling tank 105 into the mounting slot 104;

[0059] S3: Insert the liquid-cooled inner core 103 into the terminal mounting assembly 101;

[0060] S4: Install both ends of the liquid inlet pipe 108 onto the micro-refrigeration device and the liquid inlet 106 respectively, and install both ends of the liquid outlet pipe 109 onto the micro-refrigeration device and the liquid outlet 107 respectively.

[0061] S5: Start the micro-cooling device. The micro-cooling device has two functions: one is to circulate the coolant, and the other is to cool the coolant.

[0062] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid-cooled high-current connector, characterized in that, include: A cable fixing assembly, used to fix a cable; Terminal mounting assembly (101) is connected to cable fixing assembly. The terminal mounting assembly (101) is used to provide support for the terminal. After the terminal mounting assembly (101) is connected to the cable fixing assembly, the terminal is electrically connected to the cable. Liquid cooling assembly, the liquid cooling assembly comprising, A fixing sleeve (102) is detachably connected to a terminal mounting assembly (101), and a miniature cooling device is provided on the outer surface of the fixing sleeve (102). A liquid-cooled inner core (103) is installed inside a fixed sleeve (102). The outer surface of the liquid-cooled inner core (103) contacts the inner surface of the fixed sleeve (102) and is used to be sleeved on the terminal mounting assembly (101). A mounting hole (110) is provided at the center of the liquid-cooled inner core (103). Mounting slots (104), there are four mounting slots (104) symmetrically arranged around the liquid-cooled inner core (103); Four cooling tanks (105) are installed in the mounting slots (104) respectively. The interior of the cooling tanks (105) is used to hold coolant. The cooling tanks (105) are provided with inlet (106) and outlet (107). Inlet pipe (108) and outlet pipe (109) are respectively connected to inlet pipe (106) and outlet pipe (107). Inlet pipe (108) and outlet pipe (109) pass through liquid-cooled inner core (103) and fixing sleeve (102) in sequence and are connected to the micro-refrigeration device. The micro-refrigeration device is used to circulate and cool the coolant. The terminal mounting assembly (101) includes a mounting housing (127), which has four mounting through holes (128) inside. The four mounting through holes (128) are arranged in pairs, with the hole length of one set of mounting through holes (128) being greater than the hole length of the other set of mounting through holes (128). There are two sets of terminals, with two terminals in each set. One set of terminals consists of long terminals, and the other set consists of short terminals. The positions of the mounting through holes (128) correspond to the terminals. The two mounting through holes (128) with longer hole lengths are used to install two long terminals respectively, and the two mounting through holes (128) with shorter hole lengths are used to install two short terminals respectively. The liquid-cooled core (103) has four through holes (133), and the positions of the four through holes (133) correspond one-to-one with the positions of the four mounting through holes (128); the liquid-cooled core (103) is provided with a number of heat dissipation holes (138), and the four through holes (133) are connected through the number of heat dissipation holes (138); A rotating part (111) is provided at the opening of the mounting hole (110). A motor (112) is installed in the mounting hole (110). The output end of the motor (112) is connected to a rotating shaft (113). One end of the rotating shaft (113) is fixedly connected to the output end of the motor (112), and the other end is rotatably connected to the rotating part (111). Several cooling fans are provided on the rotating shaft (113). The heat dissipation holes (138) enable the terminals to dissipate heat effectively. When the motor (112) drives the cooling fan to rotate, the cooling fan quickly conducts the cold air. The cold air is quickly blown from the heat dissipation holes (138) into the four through holes (133), which cools down the through holes (133) and also provides ventilation.

2. The liquid-cooled high-current connector according to claim 1, characterized in that: A terminal fixing assembly is provided below the terminal mounting assembly (101), and the terminal fixing assembly includes, A cross-shaped plate (114) is used to be snapped between several terminals; Back plate (115), the back plate (115) is used to clamp and fix a number of terminals in conjunction with the cross plate (114), and the back plate (115) is used to be inserted into the terminal mounting assembly (101); Cooling element (116) is used to be mounted on cross-shaped plate (114) and back plate (115). Cooling element (116) is used to attach to terminal and cool the terminal.

3. A liquid-cooled high-current connector according to claim 2, characterized in that: A load-bearing plate (117) is connected to the cross-shaped plate (114), and the upper end face of the load-bearing plate (117) is in contact with the fixing sleeve (102).

4. A liquid-cooled high-current connector according to claim 1, characterized in that: Terminals include, An insulating heat-conducting sleeve (118) is provided with a slot (119) inside the insulating heat-conducting sleeve (118). The first end of the insulating heat-conducting sleeve (118) is open and the tail end is a U-shaped structure. The insulating heat-conducting sleeve (118) is used to be installed inside the terminal mounting assembly (101). The metal terminal (120) includes an upper terminal (121) and a lower terminal (122). The upper terminal (121) and the lower terminal (122) are connected to form an L-shaped structure. The upper terminal (121) is used to be inserted into the slot (119), and the lower terminal (122) is used to be covered by the tail end of the U-shaped insulating heat-conducting sleeve (118).

5. A liquid-cooled high-current connector according to claim 2, characterized in that: The back plate (115) is provided with several extrusion components, the extrusion components include, T-shaped pressure plate (123), said T-shaped pressure plate (123) is installed on back plate (115) and cross-shaped plate (114); Support plate (124), there are two support plates (124), both of which are installed at the bottom of T-shaped pressure plate (123); The cooling element (116) is provided on both the T-shaped pressure plate (123) and the support plate (124).

6. A liquid-cooled high-current connector according to claim 1, characterized in that: The retaining sleeve (102) and the terminal mounting assembly (101) are detachably connected by a snap-fit ​​assembly.

7. A liquid-cooled high-current connector according to claim 1, characterized in that: Several positioning protrusions (125) are provided below the terminal mounting assembly (101).

8. A liquid-cooled high-current connector according to claim 1, characterized in that: The bottom of the liquid-cooled inner core (103) is provided with a positioning rod (126), and the terminal mounting assembly (101) is provided with a positioning groove. The positioning rod (126) is used to cooperate with the positioning groove.

9. A cooling method, based on a liquid-cooled high-current connector according to any one of claims 1-8, characterized in that, The specific steps are as follows: S1: Inject cryogenic coolant into the cooling tank (105); S2: Insert the cooling tank (105) into the mounting slot (104); S3: Insert the liquid-cooled inner core (103) into the terminal mounting assembly (101); S4: Install the two ends of the liquid inlet pipe (108) on the micro-cooling device and the liquid inlet (106) respectively, and install the two ends of the liquid outlet pipe (109) on the micro-cooling device and the liquid outlet (107) respectively. S5: Start the micro-cooling device. The micro-cooling device has two functions: one is to circulate the coolant, and the other is to cool the coolant.

Images