Liquid cooling terminal

Abstract

The utility model discloses a liquid cooling terminal, which comprises two groups of symmetrically arranged terminal assemblies, each terminal assembly comprises a shell, a terminal and a liquid cooling cable, the tail end of the terminal and the front end of the liquid cooling cable are respectively inserted into the shell, and the front end of the liquid cooling cable is positioned between the shell and the tail end of the terminal; the two groups of terminal assemblies are clamped into a whole through the two shells, a hollow cavity is formed between the inner end surfaces of the tail ends of the two terminals, a liquid cooling cavity is arranged in the hollow cavity, and liquid cooling connecting pipes of the two liquid cooling cables are respectively communicated with the liquid cooling cavity to form a liquid cooling loop. And a heat conduction layer tightly attached to the inner end surface of the tail end of the terminal and the side wall of the liquid cooling cavity is arranged between the inner end surface of the tail end of the terminal and the side wall. According to the utility model, the liquid cooling cavity which can be communicated with the cooling liquid is arranged between the two terminals so as to timely cool the joints of the terminals and the liquid cooling cable, and the heat conduction layer is arranged between the terminals and the liquid cooling cavity so as to enhance the cooling effect of the liquid cooling cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling terminals, in particular to a liquid cooling terminal. Background Art

[0002] In the charging process of electric vehicles, the connection terminals and cables are in a high current and high voltage working loop for a long time, and are parts that are very easy to generate high temperatures. Therefore, it is necessary to cool the connection terminals and cables to ensure their safe use.

[0003] In order to solve the above problems, liquid cooling terminals have been introduced. Conventional liquid cooling terminals, such as those disclosed in announcement numbers CN113799628 A and CN214647637 U, coat the terminal with a liquid cooling structure to form a liquid cooling channel on the outside of the terminal for heat dissipation and cooling. However, such a structure often makes the overall volume of the terminal larger, further increasing the volume of the connector or charging gun equipped with the liquid cooling terminal, which increases the space requirement during assembly and increases the inconvenience of use. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a liquid cooling terminal.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A liquid-cooled terminal comprises two groups of symmetrically arranged terminal assemblies, wherein the terminal assemblies comprise a shell, a terminal, and a liquid-cooled cable, wherein the tail end of the terminal and the front end of the liquid-cooled cable are respectively inserted into the shell, and the front end of the liquid-cooled cable is located between the shell and the tail end of the terminal; the two groups of the terminal assemblies are integrally connected by two shells, a hollow cavity is formed between the inner end surfaces of the tail ends of the two terminals, a liquid-cooling cavity is built in the hollow cavity, the liquid-cooling connecting pipes of the two liquid-cooled cables are respectively connected to the liquid-cooling cavity to form a liquid-cooling circuit, and a heat-conducting layer is provided between the inner end surface of the tail end of the terminal and the side wall of the liquid-cooling cavity to be in close contact with the two.

[0007] Preferably, the liquid cooling cavity is formed by a matching cover body and a cavity body, the inner end of the cover body is inserted into the cavity, and a sealing ring is embedded on the outer wall of the inner end of the cover body, and the sealing ring seals the gap between the cover body and the cavity.

[0008] Preferably, the tail end of the cavity has a connecting pipe communicating with the interior thereof, and the liquid cooling connecting pipe is sealingly plugged into the connecting pipe.

[0009] Preferably, the upper and lower side wall edges of the outer end of the cover body respectively have a first convex step surface, and the upper and lower side wall edges of the cavity body respectively have a second convex step surface, the first step surface and the second step surface are connected to form a ring, and the first step surface and the second step surface are both abutted against the inner end surface of the tail end of the terminal, the outer wall of the cavity body, the first step surface, the inner end surface of the tail end of the terminal, and the second step surface form a hollow accommodating cavity, and the accommodating cavity is filled with a thermal conductor to form the thermal conductive layer.

[0010] Preferably, the shell has a first side wall and a second side wall arranged opposite to each other, a clamping block is arranged at the bottom end of the first side wall, and a bayonet is arranged at the bottom end of the second side wall, and the two shells are symmetrically arranged at the center and are formed into one by clamping the bayonet with the clamping block.

[0011] Preferably, a recess is provided at the bottom end of the first side wall, the card block is built into the recess, and a protruding card arm is provided at the bottom end of the second side wall, the card slot is provided on the card arm, the outer contour of the card slot matches the recess, and the card arm is inserted into the recess so that its card slot is engaged with the card block.

[0012] Preferably, the rear end of the shell is an opening, and the front end thereof is a limiting wall, and the front end of the liquid cooling cable is inserted into the shell from the opening.

[0013] Preferably, limit snap-in sockets are provided on both sides of the opening, and the tail end of the terminal has a notch, and the notch is snap-fitted with the limit snap-in sockets.

[0014] Preferably, the tail end face of the terminal is lower than the front end face thereof, forming a Z-shape, and the bottom of the limiting wall abuts against the outer end face of the tail end of the terminal.

[0015] Preferably, a temperature sensor is fixedly disposed on the outer side of the shell.

[0016] The beneficial effects of the utility model are mainly reflected in:

[0017] 1. The terminal assemblies are arranged symmetrically so that two sets of terminal assemblies are directly connected into one through the housing, and a liquid cooling cavity that can be connected to the coolant is arranged between the two terminals to timely cool down the connection between the terminal and the liquid cooling cable, and a heat conductive layer is arranged between the terminal and the liquid cooling cavity to enhance the cooling effect of the liquid cooling cavity;

[0018] 2. The heat-conducting layer directly uses the accommodation cavity formed between the terminal and the liquid cooling cavity to fill the heat-conducting agent, so as to maximize the contact tightness between the heat-conducting layer and the terminal and the liquid cooling cavity, ensure its heat-conducting effect, and minimize the heat loss between the terminal and the liquid cooling cavity, so as to enhance the heat absorption and cooling effect of the liquid cooling cavity;

[0019] 3. A temperature sensor is set on the shell to monitor the temperature of the connection between the terminal in the shell and the liquid cooling cable in real time, so as to facilitate real-time monitoring and ensure safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 : A schematic diagram of an embodiment of the utility model;

[0022] Figure 2 : An exploded schematic diagram of an embodiment of the utility model;

[0023] Figure 3 : A cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0025] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, the operator is used as a reference, the direction close to the operator is the tail end, and the direction away from the operator is the front end.

[0026] like Figures 1 to 3 As shown, the utility model discloses a liquid-cooled terminal, comprising two groups of symmetrically arranged terminal assemblies, the terminal assemblies comprising a shell 1, a terminal 2, and a liquid-cooled cable 3, the tail end of the terminal 2 and the front end of the liquid-cooled cable 3 are respectively inserted into the shell 1, and the front end of the liquid-cooled cable 3 is located between the shell 1 and the tail end of the terminal 2; the two groups of the terminal assemblies are clamped into one body by two of the shells 1, a hollow cavity is formed between the inner end surfaces of the tail ends of the two terminals 2, a liquid-cooling cavity 4 is built in the hollow cavity, the liquid-cooling connecting pipes 301 of the two liquid-cooling cables 3 are respectively connected to the liquid-cooling cavity 4 to form a liquid-cooling circuit, and a heat-conducting layer is provided between the inner end surface of the tail end of the terminal 2 and the side wall of the liquid-cooling cavity 4, which is in close contact with the two.

[0027] In this solution, two terminal assemblies are symmetrically arranged so that the two groups of terminal assemblies are directly connected into one through the two shells 1, and a liquid cooling cavity 4 that can be connected to the cooling liquid is arranged in the hollow cavity between the two terminals 2 to timely cool the connection between the terminal 2 and the liquid cooling cable 3, and a heat conductive layer is arranged between the terminal 2 and the liquid cooling cavity 4 to enhance the cooling effect of the liquid cooling cavity.

[0028] Specifically, the liquid cooling chamber 4 is formed by a matching cover body 401 and a cavity body 402, the inner end of the cover body 401 is inserted into the cavity body 402, and a sealing ring 403 is embedded on the outer wall of the inner end of the cover body 401, and the sealing ring 403 seals the gap between the cover body 401 and the cavity body 402 to ensure the sealing of the liquid cooling chamber 4.

[0029] Furthermore, the tail end of the cavity 402 has a connecting plug 406 connected to the interior thereof, the liquid cooling connecting pipe 301 is sealed and plugged with the connecting plug 406, and a multi-stage protective ring is provided on the outer wall of the connecting plug 406 to ensure the sealing between the connecting plug and the liquid cooling connecting pipe 301. The liquid cooling connecting pipe 301 is built into the liquid cooling cable 3, which is a prior art and will not be described in detail here.

[0030] like Figure 2 and Figure 3 As shown, the upper and lower side wall edges of the outer end of the cover body 401 respectively have a convex first step surface 404, and the upper and lower side wall edges of the cavity 402 respectively have a convex second step surface 405. In a preferred embodiment, the outer end of the cover body 401 wraps the cavity 402, and the two are snap-fitted, so that the upper and lower side wall edges of the cover body 401 form a first step surface 404 that is connected to the second step surface 405, and the first step surface 404 and the second step surface 405 are connected to form a continuous ring, and the first step surface 404 and the second step surface 405 are both in contact with the inner end surface of the tail end of the terminal 2. The outer wall of the cavity 402, the first step surface 404, the inner end surface of the tail end of the terminal 2, and the second step surface 405 enclose a hollow accommodating cavity 5, and the accommodating cavity 5 is filled with a thermal conductive agent to form the thermal conductive layer. The heat-conducting layer directly utilizes the accommodation cavity formed between the terminal 2 and the liquid cooling cavity 4 to fill the heat-conducting agent, so that the heat-conducting agent completely fills the gap between the terminal 2 and the liquid cooling cavity 4, maximizes the contact tightness between the heat-conducting layer and the terminal 2 and the liquid cooling cavity 4, ensures its heat-conducting effect, and minimizes the heat loss between the terminal 2 and the liquid cooling cavity 4 to enhance the heat absorption and cooling effect of the liquid cooling cavity 4. The heat-conducting agent is any feasible heat-conducting medium, which is not limited here.

[0031] like Figure 2 and Figure 3As shown, the housing 1 has a first side wall and a second side wall arranged opposite to each other, a clamping block 101 is arranged at the bottom end of the first side wall, and a bayonet 102 is arranged at the bottom end of the second side wall, and the two housings 1 are arranged symmetrically and are formed into one by clamping the clamping block 101 with the bayonet 102. Such a structure can facilitate the clamping between the two housings 1, and also facilitates the manufacture of the housing 1. Of course, in other feasible embodiments, the housings 1 can also be quickly connected with other feasible structures.

[0032] Furthermore, a recess 103 is provided at the bottom end of the first side wall, and the clamping block 101 is built into the recess 103. A protruding clamping arm 104 is provided at the bottom end of the second side wall, and the clamping port 102 is provided on the clamping arm 104. The outer contour of the clamping arm 104 matches the recess 103. The clamping arm 104 is inserted into the recess 103 so that the clamping port 102 is clamped with the clamping block 101. The recess 103 and the clamping arm 104 play a guiding and positioning role in the clamping between the two shells 1, which facilitates the rapid alignment and clamping of the two shells 1, and enhances the connection stability of the two shells 1 after clamping. The clamping arm 104 is inserted into the recess 103 so that the two shells 1 form a continuous surface after clamping, so as to avoid the connection between the two being disconnected by accidental contact with other structures.

[0033] The rear end of the housing 1 is an opening 105, and the front end thereof is a limiting wall 106. The front end of the liquid cooling cable 3 is inserted into the housing 1 from the opening 105. Limiting bayonet holes 107 are arranged on both sides of the opening 105, and the rear end of the terminal 2 has a notch 201, and the notch 201 is engaged with the limiting bayonet hole 107.

[0034] Preferably, the tail end face of the terminal 2 is lower than the front end face thereof, forming a Z-shape, and the bottom of the limiting wall 106 abuts against the outer end face of the tail end of the terminal 2. Such a structure can shorten the distance between the tail end faces of the terminal 2 to reduce the volume of the liquid cooling chamber 4, and also ensure that after the two housings 1 are connected, they will not protrude excessively from the front end of the terminal 2, thereby reducing the volume of the overall structure, reducing the outer contour, and saving installation space.

[0035] In order to further ensure the safety of use, a temperature sensor 6 is fixedly arranged on the outer side of the housing 1. A plug-in portion is arranged on the outer side of the housing 1 to facilitate the insertion of the temperature sensor 6 into the plug-in portion. The temperature sensor 6 monitors the temperature at the connection between the terminal 2 in the housing 1 and the liquid cooling cable 3 in real time, so as to facilitate real-time monitoring and ensure the safety of use.

[0036] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0037] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid-cooled terminal, characterized in that: The invention comprises two groups of symmetrically arranged terminal assemblies, wherein the terminal assemblies comprise a shell (1), a terminal (2), and a liquid cooling cable (3); the tail end of the terminal (2) and the front end of the liquid cooling cable (3) are respectively inserted into the shell (1), and the front end of the liquid cooling cable (3) is located between the shell (1) and the tail end of the terminal (2); the two groups of the terminal assemblies are connected as one body by two shells (1); a hollow cavity is formed between the inner end surfaces of the tail ends of the two terminals (2); a liquid cooling cavity (4) is disposed in the hollow cavity; the liquid cooling connecting pipes (301) of the two liquid cooling cables (3) are respectively connected to the liquid cooling cavity (4) to form a liquid cooling circuit; and a heat conductive layer is disposed between the inner end surface of the tail end of the terminal (2) and the side wall of the liquid cooling cavity (4) to be in close contact with the two.

2. The liquid-cooled terminal according to claim 1, characterized in that: The liquid cooling cavity (4) is formed by covering a matching cover body (401) and a cavity body (402), the inner end of the cover body (401) is inserted into the cavity body (402), and a sealing ring (403) is embedded on the outer wall of the inner end of the cover body (401), and the sealing ring (403) seals the gap between the cover body (401) and the cavity body (402).

3. The liquid-cooled terminal according to claim 2, characterized in that: The tail end of the cavity (402) is provided with a connecting plug (406) connected to the interior thereof, and the liquid cooling connecting pipe (301) is sealed and plugged into the connecting plug (406).

4. The liquid-cooled terminal according to claim 2, characterized in that: The upper and lower side wall edges of the outer end of the cover body (401) respectively have outwardly convex first step surfaces (404), and the upper and lower side wall edges of the cavity body (402) respectively have outwardly convex second step surfaces (405), the first step surface (404) and the second step surface (405) are connected to form a ring, and the first step surface (404) and the second step surface (405) are both in contact with the inner end surface of the tail end of the terminal (2), and the outer wall of the cavity body (402), the first step surface (404), the inner end surface of the tail end of the terminal (2), and the second step surface (405) are surrounded by a hollow accommodating cavity (5), and the accommodating cavity (5) is filled with a thermal conductive agent to form the thermal conductive layer.

5. The liquid-cooled terminal according to claim 1, characterized in that: The shell (1) has a first side wall and a second side wall which are arranged opposite to each other, a clamping block (101) is arranged at the bottom end of the first side wall, and a clamping opening (102) is arranged at the bottom end of the second side wall, the two shells (1) are arranged symmetrically around the center, and are clamped together by the clamping opening (102) and the clamping block (101) to form a whole.

6. The liquid-cooled terminal according to claim 5, characterized in that: A recess (103) is provided at the bottom end of the first side wall, the clamping block (101) is built into the recess (103), an outwardly protruding clamping arm (104) is provided at the bottom end of the second side wall, the clamping opening (102) is provided on the clamping arm (104), the outer contour of the clamping arm (104) matches the recess (103), and the clamping arm (104) is inserted into the recess (103) so that its clamping opening (102) is clamped with the clamping block (101).

7. The liquid-cooled terminal according to claim 6, characterized in that: The rear end of the shell (1) is an opening (105), and the front end thereof is a limiting wall (106); the front end of the liquid cooling cable (3) is inserted into the shell (1) from the opening (105).

8. The liquid-cooled terminal according to claim 7, characterized in that: Limiting snap-on notches (107) are arranged on both sides of the opening (105); the tail end of the terminal (2) has a notch (201), and the notch (201) is engaged with the limiting snap-on notches (107).

9. The liquid-cooled terminal according to claim 8, characterized in that: The tail end face of the terminal (2) is lower than the front end face thereof, forming a Z-shape, and the bottom of the limiting wall (106) abuts against the outer end face of the tail end of the terminal (2).

10. The liquid-cooled terminal according to any one of claims 1 to 9, characterized in that: A temperature sensor (6) is fixedly arranged on the outer side of the housing (1).

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