Liquid cooling system and charging gun

Abstract

The present application relates to the technical field of conductive element cooling, and provides a liquid cooling system and a charging gun, for use in solving the technical problems in the related art of poor heat dissipation efficiency and complex assembly of conductive elements. The liquid cooling system comprises: a first liquid cooling unit, a second liquid cooling unit, a first conductive element, a second conductive element, a liquid inlet pipe, a liquid outlet pipe, and a connecting pipe. The first liquid cooling unit is connected to the first conductive element; the second liquid cooling unit is connected to the second conductive element; the liquid inlet pipe is communicated with an inlet of the first liquid cooling unit; one end of the connecting pipe is communicated with an outlet of the first liquid cooling unit, and the other end of the connecting pipe is communicated with an inlet of the second liquid cooling unit; and the liquid outlet pipe is communicated with an outlet of the second liquid cooling unit. The two independent liquid cooling units are communicated by means of the connecting pipe, so that the two liquid cooling units are connected in series, thereby reducing the number of pipes and reducing the assembly complexity. The two conductive elements are cooled simultaneously, thereby solving the problem of low cooling efficiency and greatly increasing the charging power.

Description

Liquid cooling system and charging gun Technical Field

[0001] This application relates to the field of conductive element cooling technology, and in particular to a liquid cooling system and a charging gun. Background Technology

[0002] The liquid cooling system of the charging gun in the prior art is shown in Chinese patent application CN215793218U, which discloses a charging gun and specifically discloses that the cooling method for the positive and negative terminals is to cool a pair of positive and negative terminals simultaneously through a liquid cooling unit. This method has low cooling efficiency and complex assembly.

[0003] Regarding the aforementioned prior art, German patent DE102016204895B4 discloses a charging connector for coupling with a corresponding connecting device and transmitting electrical energy. To improve the cooling efficiency of the positive and negative terminals, it employs two cooling units to cool the positive and negative terminals separately. However, the liquid cooling system in this patent has two inlets and two outlets, requiring a total of four water pipes. Since this liquid cooling system is installed in the charging gun plug, having too many water pipes increases the outer diameter of the insulation layer covering the water pipes and cables, ultimately increasing the overall size of the charging gun plug and negatively impacting the user experience.

[0004] Therefore, it is indeed necessary to improve existing technologies to address their shortcomings. Summary of the Invention

[0005] In view of the above problems, this application provides a liquid cooling system and a charging gun to solve the problems of poor heat dissipation efficiency of conductive components, complex assembly, large size and high cost in related technologies.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] This application provides a liquid cooling system, including: a first liquid cooling unit, a second liquid cooling unit, a first conductive element, a second conductive element, an inlet pipe, an outlet pipe, and a connecting pipe, wherein the first liquid cooling unit is connected to the first conductive element, and the second liquid cooling unit is connected to the second conductive element;

[0008] The inlet pipe is connected to the inlet of the first liquid cooling unit, one end of the connecting pipe is connected to the outlet of the first liquid cooling unit, the other end of the connecting pipe is connected to the inlet of the second liquid cooling unit, and the outlet pipe is connected to the outlet of the second liquid cooling unit.

[0009] In one feasible embodiment, the first liquid cooling unit and the second liquid cooling unit are spaced apart along a first direction. The first liquid cooling unit includes a first side surface, and the second liquid cooling unit includes a second side surface. The first side surface and the second side surface are parallel and both are located on the first direction axis. The inlet and outlet of the first liquid cooling unit are both located on the first side surface, and the inlet and outlet of the second liquid cooling unit are both located on the second side surface.

[0010] In one feasible embodiment, the first liquid cooling unit and the second liquid cooling unit are spaced apart along a first direction. The first liquid cooling unit includes an intersecting first side and a third side, and the second liquid cooling unit includes an intersecting second side and a fourth side. The first side and the second side are both located on the first direction axis, the third side and the fourth side are opposite to each other, and the planes on which the third side and the fourth side are located are both parallel to the second direction axis.

[0011] The inlet and outlet of the first liquid cooling unit are respectively located on the first side and the third side, and the inlet and outlet of the second liquid cooling unit are respectively located on the fourth side and the second side.

[0012] In one feasible embodiment, the inlet pipe, the outlet pipe, and the connecting pipe are all flexible pipes.

[0013] In one feasible embodiment, a first water pipe connector is installed at the inlet of the first liquid cooling unit, and a second water pipe connector is installed at the outlet of the first liquid cooling unit.

[0014] The inlet pipe is sleeved on the first water pipe connector and is connected to the inside of the first water pipe connector; one end of the connector is sleeved on the second water pipe connector and is connected to the inside of the second water pipe connector.

[0015] A third water pipe connector is installed at the inlet of the second liquid cooling unit, and a fourth water pipe connector is installed at the outlet of the second liquid cooling unit. The other end of the connecting pipe is sleeved on the third water pipe connector and connected to the inside of the third water pipe connector. The liquid outlet pipe is sleeved on the fourth water pipe connector and connected to the inside of the fourth water pipe connector.

[0016] In one feasible embodiment, the extension direction of the first water pipe connector is perpendicular to the first side, the extension direction of the second water pipe connector is perpendicular to the first side and extends toward the connecting pipe, the extension direction of the third water pipe connector is perpendicular to the second side and extends toward the connecting pipe, and the extension direction of the fourth water pipe connector is perpendicular to the second side.

[0017] In one feasible embodiment, the extension directions of the first water pipe connector and the second water pipe connector are both perpendicular to the first side, and the extension directions of the third water pipe connector and the fourth water pipe connector are both perpendicular to the second side.

[0018] In one feasible embodiment, the first water pipe connector is mounted on the first side, and the extension direction of the first water pipe connector is perpendicular to the first side.

[0019] The second water pipe connector is installed on the third side, and the extension direction of the second water pipe connector is perpendicular to the third side.

[0020] The third water pipe connector is installed on the fourth side, and the extension direction of the third water pipe connector is perpendicular to the fourth side.

[0021] The fourth water pipe connector is installed on the second side, and the extension direction of the fourth water pipe connector is perpendicular to the second side.

[0022] In one feasible embodiment, the liquid cooling system further includes: a first threaded connector and a second threaded connector, wherein the first liquid cooling unit is provided with a first threaded hole, the first conductive element is provided with a second threaded hole, and the first threaded connector is connected to both the first threaded hole and the second threaded hole.

[0023] The second liquid cooling unit is provided with a third threaded hole, the second conductive element is provided with a fourth threaded hole, and the second threaded connector is connected to both the third threaded hole and the fourth threaded hole.

[0024] In one feasible embodiment, the first conductive element includes a copper busbar and a conductive terminal, the copper busbar being attached to and connected to one of the outer surfaces of the first liquid cooling unit, one end of the conductive terminal being connected to the end of the copper busbar, and the other end of the conductive terminal extending in a direction away from the copper busbar.

[0025] To achieve the above objectives, the embodiments of this application also provide the following technical solutions:

[0026] A charging gun, including the aforementioned liquid cooling system.

[0027] The liquid cooling system provided in this application has the following beneficial effects:

[0028] 1. This liquid cooling system uses two liquid cooling units to cool two conductive components separately, which solves the problem of low cooling efficiency of conductive components.

[0029] 2. By using connecting pipes to connect two independent liquid cooling units in series, the number of water pipes is effectively reduced, thereby reducing the outer diameter of the insulation layer covering the water pipes and cables, and finally reducing the overall size of the charging gun plug, reducing costs and improving user experience. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 is a three-dimensional structural schematic diagram of the liquid cooling system provided in an embodiment of this application;

[0032] Figure 2 is an exploded view of the liquid cooling system provided in an embodiment of this application;

[0033] Figure 3 is a structural diagram of the charging gun provided in an embodiment of this application.

[0034] Reference numerals: 100: First liquid cooling unit; 101: First side surface; 102: First water pipe connector; 103: Second water pipe connector; 105: First threaded hole; 200: Second liquid cooling unit; 201: Second side surface; 202: Third water pipe connector; 203: Fourth water pipe connector; 205: Third threaded hole; 300: First conductive element; 301: Second threaded hole; 400: Second conductive element; 401: Fourth threaded hole; 500: Liquid inlet pipe; 600: Liquid outlet pipe; 700: Connecting pipe; 801: First threaded connector; 802: Second threaded connector; 901: First cable; 902: Second cable. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] This application provides a liquid cooling system. Referring to Figures 1 and 2, Figure 1 is a three-dimensional structural schematic diagram of the liquid cooling system provided in this application embodiment, and Figure 2 is an exploded view of the liquid cooling system provided in this application embodiment. The liquid cooling system includes: a first liquid cooling unit 100, a second liquid cooling unit 200, a first conductive element 300, and a second conductive element 400. The first liquid cooling unit 100 is connected to the first conductive element 300 and includes an inlet and an outlet. Coolant flows into the first liquid cooling unit 100 from the inlet, cools the first conductive element 300, and then flows out from the outlet of the first liquid cooling unit 100. The second liquid cooling unit 200 is connected to the second conductive element 400 and includes an inlet and an outlet. Coolant flows into the second liquid cooling unit 200 from the inlet, cools the second conductive element 400, and then flows out from the outlet of the second liquid cooling unit 200.

[0037] The liquid cooling system also includes: an inlet pipe 500, an outlet pipe 600, and a connecting pipe 700. The inlet pipe 500 is connected to the inlet of the first liquid cooling unit 100, one end of the connecting pipe 700 is connected to the outlet of the first liquid cooling unit 100, the other end of the connecting pipe 700 is connected to the inlet of the second liquid cooling unit 200, and the outlet pipe 600 is connected to the outlet of the second liquid cooling unit 200.

[0038] Coolant flows into the first liquid cooling unit 100 through the inlet pipe 500, cools the first conductive element 300 in the first liquid cooling unit 100, and then flows out of the first liquid cooling unit 100; then it flows into the second liquid cooling unit 200 through the connecting pipe 700, cools the second conductive element 400 in the second liquid cooling unit 200, and then flows out of the second liquid cooling unit 200, and finally enters the outlet pipe 600, completing one cooling cycle.

[0039] The liquid cooling system of this application embodiment includes: a first liquid cooling unit 100, a second liquid cooling unit 200, a first conductive element 300, a second conductive element 400, an inlet pipe 500, an outlet pipe 600, and a connecting pipe 700. The first liquid cooling unit 100 is connected to the first conductive element 300, and the second liquid cooling unit 200 is connected to the second conductive element 400. The inlet pipe 500 is connected to the inlet of the first liquid cooling unit 100, one end of the connecting pipe 700 is connected to the outlet of the first liquid cooling unit 100, the other end of the connecting pipe 700 is connected to the inlet of the second liquid cooling unit 200, and the outlet pipe 600 is connected to the outlet of the second liquid cooling unit 200. Two independent liquid cooling units are connected by a connecting pipe 700. An inlet pipe 500 is connected to the first liquid cooling unit 100, and an outlet pipe 600 is connected to the second liquid cooling unit 200, thus realizing the series connection of the two liquid cooling units, effectively reducing the number of pipes and reducing assembly complexity. At the same time, the liquid cooling system can simultaneously cool the first conductive element 300 and the second conductive element 400, solving the problem of low cooling efficiency of conductive elements and greatly improving charging power.

[0040] In this embodiment of the application, the first conductive element 300 includes a copper busbar 301 and a conductive terminal 302. The copper busbar 301 is attached to and connected to one of the outer surfaces of the first liquid cooling unit 100. One end of the conductive terminal 302 is connected to the end of the copper busbar 301, and the other end of the conductive terminal 302 is away from the copper busbar 301 along the second direction (the Y direction shown in the figure, where the first direction is perpendicular to the second direction).

[0041] The inlet pipe 500, outlet pipe 600, and connecting pipe 700 are all flexible pipes. The first liquid cooling unit 100 and the second liquid cooling unit 200 are connected through the flexible pipes, avoiding hard connections, reducing assembly size deviations, and eliminating the stress effect on the other liquid cooling unit or terminal after one terminal is subjected to force.

[0042] In the first embodiment of this application, a first liquid cooling unit 100 and a second liquid cooling unit 200 are spaced apart along a first direction (the X direction shown in FIG. 1). The first liquid cooling unit 100 includes a first side surface 101, and the second liquid cooling unit 200 includes a second side surface 201. The first side surface 101 and the second side surface 201 are parallel and both are located on the first direction axis (the X direction axis shown in FIG. 2). The inlet and outlet of the first liquid cooling unit 100 are both located on the first side surface 101, and the inlet and outlet of the second liquid cooling unit 200 are both located on the second side surface 201. That is, the inlet and outlet of the first liquid cooling unit 100 and the inlet and outlet of the second liquid cooling unit 200 are all located on the same side.

[0043] A first water pipe connector 102 is installed at the inlet of the first liquid cooling unit 100, a second water pipe connector 103 is installed at the outlet of the first liquid cooling unit 100, a third water pipe connector 202 is installed at the inlet of the second liquid cooling unit 200, and a fourth water pipe connector 203 is installed at the outlet of the second liquid cooling unit 200.

[0044] In the first embodiment, under the first condition: the extension direction of the first water pipe connector 102 is perpendicular to the first side 101; the extension direction of the second water pipe connector 103 is perpendicular to the first side 101 and extends towards the connecting pipe 700; the extension direction of the third water pipe connector 202 is perpendicular to the second side 201 and extends towards the connecting pipe 700; and the extension direction of the fourth water pipe connector 203 is perpendicular to the second side 201. The inlet pipe 500 is sleeved on the first water pipe connector 102 and communicates with the interior of the first water pipe connector 102; one end of the connecting pipe 700 is sleeved on the second water pipe connector 103 and communicates with the interior of the second water pipe connector 103; the other end of the connecting pipe 700 is sleeved on the third water pipe connector 202 and communicates with the interior of the third water pipe connector; and the outlet pipe 600 is sleeved on the fourth water pipe connector and communicates with the interior of the fourth water pipe connector.

[0045] In the first embodiment, in the second case: the extending directions of the first water pipe connector 102 and the second water pipe connector 103 are both perpendicular to the first side surface 101, and the extending directions of the third water pipe connector 202 and the fourth water pipe connector 203 are both perpendicular to the second side surface 201. The difference between the second case and the first case is that the connecting pipe 700 is U-shaped, with one end of the connecting pipe 700 fitted onto the second water pipe connector 103 and the other end of the connecting pipe 700 fitted onto the third water pipe connector 202.

[0046] In the second embodiment of this application, the first liquid cooling unit 100 and the second liquid cooling unit 200 are spaced apart along a first direction (the X direction shown in FIG1). The first liquid cooling unit 100 includes an intersecting first side 101 and a third side (not shown in FIG2), and the second liquid cooling unit 200 includes an intersecting second side 201 and a fourth side (not shown in FIG2). The first side 101 and the second side 201 are both located on the first direction axis (the X direction axis shown in FIG2). The third side is close to the second liquid cooling unit 200, and the fourth side is close to the first liquid cooling unit 100. The third side and the fourth side are opposite to each other along the first direction, and the planes on which the third side and the fourth side are located are both parallel to the second direction axis.

[0047] The inlet of the first liquid cooling unit 100 is located on the first side 101, and the outlet of the first liquid cooling unit 100 is located on the third side. That is, the outlet of the first liquid cooling unit 100 is located at the bottom of the first liquid cooling unit 100 in Figure 2. The inlet of the second liquid cooling unit 200 is located on the fourth side, and the outlet of the second liquid cooling unit is located on the second side 201. That is, the inlet of the second liquid cooling unit 200 is located at the top of the second liquid cooling unit 200 in Figure 2, opposite to the outlet of the first liquid cooling unit 100.

[0048] A first water pipe connector 102 is installed at the inlet of the first liquid cooling unit 100, and the extension direction of the first water pipe connector 102 is perpendicular to the first side 101. A second water pipe connector 103 is installed at the outlet of the first liquid cooling unit 100, and the extension direction of the second water pipe connector 103 is perpendicular to the third side. A third water pipe connector 202 is installed at the inlet of the second liquid cooling unit 200, and the extension direction of the third water pipe connector is perpendicular to the fourth side. A fourth water pipe connector 203 is installed at the outlet of the second liquid cooling unit, and the extension direction of the fourth water pipe connector 203 is perpendicular to the second side 201. The inlet pipe 500 is fitted onto the first water pipe connector 102 and is connected to the inside of the first water pipe connector 102. One end of the connecting pipe 700 is fitted onto the second water pipe connector 103 and is connected to the inside of the second water pipe connector 103. The other end of the connecting pipe 700 is fitted onto the third water pipe connector 202 and is connected to the inside of the third water pipe connector. The outlet pipe 600 is fitted onto the fourth water pipe connector and is connected to the inside of the fourth water pipe connector.

[0049] Referring again to Figure 2, in this embodiment, the liquid cooling system further includes: a first threaded connector 801 and a second threaded connector 802. A first threaded hole 105 is provided on the first liquid cooling unit 100, and the first threaded connector 801 is configured to connect to both the first threaded hole 105 and the second threaded hole 301 provided on the first conductive element 300. A third threaded hole 205 is provided on the second liquid cooling unit 200, and the second threaded connector 802 is configured to connect to both the third threaded hole 205 and the fourth threaded hole 401 provided on the second conductive element 400. This ensures a stable connection between the first liquid cooling unit 100 and the first conductive element 300, and a stable connection between the second liquid cooling unit 200 and the second conductive element 400, guaranteeing the normal operation of the liquid cooling system.

[0050] This application also provides a charging gun terminal, which includes the liquid cooling system described above.

[0051] Meanwhile, the liquid cooling system also includes a first conductive element 300, a second conductive element 400, a first cable 901 and a second cable 902. The first liquid cooling unit 100 of the liquid cooling system is connected to the first conductive element 300, the second liquid cooling unit 200 is connected to the second conductive element 400, the first cable 901 is connected to the first conductive element 300, and the second cable 902 is connected to the second conductive element 400.

[0052] Referring to Figures 1 and 2, the first liquid cooling unit 100 is connected to the front side of the first conductive element 300, and the first cable 901 is connected to the back side of the first conductive element 300; similarly, the second liquid cooling unit 200 is connected to the front side of the second conductive element 400, and the second cable 902 is connected to the back side of the second conductive element 400.

[0053] In summary, this application provides a liquid cooling system and a charging gun terminal. The liquid cooling system includes a first liquid cooling unit 100, a second liquid cooling unit 200, an inlet pipe 500, an outlet pipe 600, and a connecting pipe 700. The first liquid cooling unit 100 is configured to be connected to a first conductive element 300, and the second liquid cooling unit 200 is configured to be connected to a second conductive element 400. The inlet pipe 500 is connected to the inlet of the first liquid cooling unit 100, one end of the connecting pipe 700 is connected to the outlet of the first liquid cooling unit 100, the other end of the connecting pipe 700 is connected to the inlet of the second liquid cooling unit 200, and the outlet pipe 600 is connected to the outlet of the second liquid cooling unit 200. Two independent liquid cooling units are connected by a connecting pipe 700. An inlet pipe 500 is connected to the first liquid cooling unit 100, and an outlet pipe 600 is connected to the second liquid cooling unit 200. This series connection of the two liquid cooling units effectively reduces the number of pipes and facilitates production and assembly. At the same time, the liquid cooling system can simultaneously cool the first conductive element 300 and the second conductive element 400, solving the problem of low cooling efficiency of the charging gun terminals and significantly improving the charging power.

[0054] The various embodiments or embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0055] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0056] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0057] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0058] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid cooling system, characterized by, The application relates to a liquid cooling device, comprising: a first liquid cooling unit, a second liquid cooling unit, a first conductive element, a second conductive element, a liquid inlet pipe, a liquid outlet pipe and a connecting pipe, the first liquid cooling unit being connected with the first conductive element, and the second liquid cooling unit being connected with the second conductive element; the liquid inlet pipe being communicated with the inlet of the first liquid cooling unit, one end of the connecting pipe being communicated with the outlet of the first liquid cooling unit, the other end of the connecting pipe being communicated with the inlet of the second liquid cooling unit, and the liquid outlet pipe being communicated with the outlet of the second liquid cooling unit.

2. The liquid cooling system of claim 1, wherein, The first liquid cooling unit and the second liquid cooling unit are arranged along a first direction, the first liquid cooling unit comprises a first side, the second liquid cooling unit comprises a second side, the first side and the second side are parallel and are located on a first direction axis, the inlet and the outlet of the first liquid cooling unit are arranged on the first side, and the inlet and the outlet of the second liquid cooling unit are arranged on the second side.

3. The liquid cooling system of claim 1, wherein, The first liquid cooling unit and the second liquid cooling unit are arranged along a first direction, the first liquid cooling unit comprises a first side and a third side intersecting with each other, the second liquid cooling unit comprises a second side and a fourth side intersecting with each other, the first side and the second side are located on a first direction axis, the third side and the fourth side are opposite to each other, and the plane where the third side is located and the plane where the fourth side is located are parallel to a second direction axis. The inlet and the outlet of the first liquid cooling unit are arranged on the first side and the third side respectively, and the inlet and the outlet of the second liquid cooling unit are arranged on the fourth side and the second side respectively.

4. The liquid cooling system of claim 1, wherein, The liquid inlet pipe, the liquid outlet pipe and the connecting pipe are flexible pipes.

5. The liquid cooling system of claim 2 or 3, wherein, A first water pipe connector is arranged at the inlet of the first liquid cooling unit, and a second water pipe connector is arranged at the outlet of the first liquid cooling unit. The liquid inlet pipe is sleeved on the first water pipe connector and is communicated with the inside of the first water pipe connector, and one end of the connecting pipe is sleeved on the second water pipe connector and is communicated with the inside of the second water pipe connector. A third water pipe connector is arranged at the inlet of the second liquid cooling unit, a fourth water pipe connector is arranged at the outlet of the second liquid cooling unit, the other end of the connecting pipe is sleeved on the third water pipe connector and is communicated with the inside of the third water pipe connector, and the liquid outlet pipe is sleeved on the fourth water pipe connector and is communicated with the inside of the fourth water pipe connector.

6. The liquid cooling system of claim 5, wherein, The extension direction of the first water pipe connector is perpendicular to the first side, the extension direction of the second water pipe connector extends towards the direction of the connecting pipe after being perpendicular to the first side, the extension direction of the third water pipe connector extends towards the direction of the connecting pipe after being perpendicular to the second side, and the extension direction of the fourth water pipe connector is perpendicular to the second side.

7. The liquid cooling system of claim 5, wherein, The extension direction of the first water pipe connector and the extension direction of the second water pipe connector are both perpendicular to the first side, and the extension direction of the third water pipe connector and the extension direction of the fourth water pipe connector are both perpendicular to the second side.

8. The liquid cooling system of claim 5, wherein, The first water pipe connector is installed on the first side surface, and the extension direction of the first water pipe connector is perpendicular to the first side surface; The second water pipe connector is installed on the third side surface, and the extension direction of the second water pipe connector is perpendicular to the third side surface; The third water pipe connector is installed on the fourth side surface, and the extension direction of the third water pipe connector is perpendicular to the fourth side surface; The fourth water pipe connector is installed on the second side surface, and the extension direction of the fourth water pipe connector is perpendicular to the second side surface.

9. The liquid cooling system of claim 1, wherein, The liquid cooling system further comprises a first threaded connector and a second threaded connector, the first liquid cooling unit is provided with a first threaded hole, the first conductive element is provided with a second threaded hole, and the first threaded connector is connected with the first threaded hole and the second threaded hole; The second liquid cooling unit is provided with a third threaded hole, the second conductive element is provided with a fourth threaded hole, and the second threaded connector is connected with the third threaded hole and the fourth threaded hole.

10. The liquid cooling system of claim 1, wherein, The first conductive element comprises a copper bar and a conductive terminal, the copper bar is attached to and connected with one of the outer surfaces of the first liquid cooling unit, one end of the conductive terminal is connected with the end of the copper bar, and the other end of the conductive terminal extends away from the copper bar.

11. A charging gun, characterized in that The liquid cooling system comprises any one of claims 1-10. The liquid cooling system comprises any one of claims 1-10.

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