Liquid cooling branch pipe system

Abstract

The invention relates to a liquid cooling branch pipe system. The liquid cooling branch pipe system comprises a connecting element; the first connecting unit comprises a mounting hole and a first welding part; the connecting element can be fixed at the mounting hole of the first connecting unit; the first connecting unit comprises a first welding part, the second connecting unit comprises a second welding part, and after all the connecting elements are fixed to the first connecting unit, the first welding part and the second welding part fix the first connecting unit and the second connecting unit through welding. And therefore, the first connecting unit and the second connecting unit form a liquid cooling cavity in a surrounding manner. According to the liquid cooling main pipeline, the corresponding connecting elements are installed on the first connecting units in advance, then the first connecting units and the second connecting units are spliced into the liquid cooling main pipeline, the modularization degree is high, the installation efficiency can be improved, liquid cooling main pipeline deformation caused by direct welding is avoided, and the yield is improved.

Description

[0001] Cross-reference related citations This application claims priority to Chinese Patent Application No. 202511445795.1, filed on October 11, 2025, entitled “A Liquid-Cooled Manifold System”, which is incorporated herein by reference. Technical Field

[0002] This invention relates to a liquid-cooled server, and more particularly to a liquid-cooled branch pipe system. Background Technology

[0003] The description in this section provides only background information related to the disclosure of this invention and does not constitute prior art.

[0004] Liquid-cooled servers have rapidly expanded with the explosive growth in high-power fields such as AI computing power and financial transactions, becoming a core technology for energy conservation and consumption reduction in data centers. Liquid-cooled servers utilize liquid as a cooling medium, directly absorbing and transferring the heat generated during operation through liquid flow, thereby improving equipment operating speed. The core principle involves introducing coolant into the server through liquid-cooled pipes, where the thermally conductive liquid directly contacts the heat-generating components to complete heat exchange, achieving rapid heat dissipation for the server.

[0005] In existing liquid-cooled server installations, connecting components used for water circuit connections or positioning are typically soldered directly onto the corresponding main liquid cooling pipeline. However, this soldering process is relatively complex and lacks modularity, impacting installation efficiency. Furthermore, with multiple connecting components spaced close together, the soldering process can cause thermal deformation of the main liquid cooling pipeline, affecting yield rates.

[0006] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0007] The purpose of this invention is to provide a liquid-cooled manifold system that can be pre-installed on a first connecting unit by connecting the corresponding connecting elements, and then the first connecting unit and the second connecting unit are spliced ​​together to form a liquid-cooled main pipeline. This system has a high degree of modularity, which helps to improve installation efficiency and avoids deformation of the liquid-cooled main pipeline caused by direct welding, thereby improving the yield rate.

[0008] To achieve the above objectives, the present invention discloses a liquid-cooled manifold system, the liquid-cooled manifold system comprising: Connecting elements; The first connecting unit comprises a mounting hole, the bottom end of the connecting element is connected with the mounting hole, and the outer edge of the first connecting unit comprises a first welding part; The second connecting unit comprises a second welding part, the first welding part is welded with the second welding part, so that the first connecting unit is installed above the second connecting unit, and the first connecting unit and the second connecting unit form a liquid cooling cavity.

[0009] As a further description of the above technical solution, the second connecting unit comprises a first opening, the edge of the first opening forms a stepped groove, and the first connecting unit is embedded and installed in the stepped groove.

[0010] As a further description of the above technical solution, the thickness of the first connecting unit is equal to the thickness of the stepped groove, so that the top surface of the first connecting unit installed in the stepped groove is flush with the top surface of the adjacent second connecting unit, the size of the first opening matches the outer edge of the first connecting unit, the first connecting unit is provided with a first welding part adjacent to the edge of the first opening, and the first opening is provided with a second welding part adjacent to the edge of the first connecting unit.

[0011] As a further description of the above technical solution, the second connecting unit comprises a second opening corresponding to the position of the mounting hole, the first connecting unit is arranged on the top surface of the second connecting unit, the side wall of the first connecting unit is provided with a first welding part, and the second connecting unit is provided with a second welding part adjacent to the side wall of the first connecting unit.

[0012] As a further description of the above technical solution, the first connecting unit is provided in a U shape, the second connecting unit is provided in a tubular shape, and the first connecting unit is arranged on the second connecting unit in a cladding manner along the opening direction of the U shape.

[0013] As a further description of the above technical solution, the first connecting unit is provided in a five-surface cuboid formed by bending a planar sheet, the second connecting unit is provided in a rectangular shape, and the five-surface cuboid is arranged on the rectangular shape and forms the liquid cooling cavity.

[0014] As a further description of the above technical solution, the bottom end of the connecting element comprises a bolt and a nut, the bolt is arranged through the mounting hole, and the connecting element is fixed on the first connecting unit by means of the nut arranged from the bottom of the bolt.

[0015] As a further description of the above technical solution, the number of the connecting elements is set to multiple, and the multiple connecting elements are spaced apart on the top surface and / or side wall of the first connecting unit.

[0016] As a further description of the above technical solution, the connecting element includes a flange portion and a connecting portion. The bottom surface of the flange portion is in contact with the top surface of the first connecting unit, and the connecting portion is disposed at the bottom of the flange portion. At least a portion of the connecting portion passes through the mounting hole.

[0017] As a further description of the above technical solution, a sealing ring is installed between the bottom surface of the flange and the top surface of the first connecting unit.

[0018] As a further description of the above technical solution, the connecting part is riveted to the mounting hole.

[0019] As a further description of the above technical solution, the connecting part is riveted or riveted to the mounting hole, such that the riveted part formed at the bottom end of the connecting part and the bottom surface of the flange part clamp the edge of the mounting hole.

[0020] As a further description of the above technical solution, the edge of the flange is welded to the top surface of the first connecting unit.

[0021] As a further description of the above technical solution, the bottom and / or sidewall of the second connecting unit are provided with a second mounting hole, and the connecting element can be fixed at the second mounting hole of the second connecting unit.

[0022] The present invention also includes a method for manufacturing a liquid-cooled manifold system, comprising the following steps: fixing all connecting elements at the mounting holes of a first connecting unit, and then welding the first connecting unit with the fixing elements to a second connecting unit, such that a weld is formed between the first welding part of the first connecting unit and the second welding part of the second connecting unit, and such that the first connecting unit and the second connecting unit form a liquid-cooled cavity.

[0023] By employing the above technical solutions, the beneficial effects of the present invention are as follows: The liquid-cooled manifold system of the present invention can be modularized by pre-installing corresponding connecting elements on the first connecting unit, and then splicing the first connecting unit and the second connecting unit into a liquid-cooled main pipeline. This high degree of modularity helps to improve installation efficiency and avoids deformation of the liquid-cooled main pipeline caused by direct welding, thus improving the yield rate. Specifically, the installation of the liquid-cooled manifold system can be roughly divided into three parts for modular assembly. First, the first connecting unit and the corresponding connecting elements are installed together. Then, the first connecting unit and the second connecting unit carrying the connecting elements are spliced ​​together. Therefore, when the first connecting unit and the second connecting unit are spliced ​​together, the installation of the connecting elements has already been completed. This avoids the stress generated by welding or riveting the connecting elements from affecting the deformation of the first connecting unit and the second connecting unit spliced ​​into the liquid-cooled main pipeline itself. Moreover, the step-by-step modular installation is more efficient.

[0024] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figures 1-2 This is a schematic diagram of a stepped groove scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figures 3-4 This is a schematic diagram of a U-shaped covering scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figures 5-6 This is a schematic diagram of a bending and splicing scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figures 7-8 This is a schematic diagram of a bending and splicing scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figure 9 This is a schematic diagram of a connection element press-fit scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figure 10 This is a schematic diagram of a riveting scheme for connecting elements of a liquid-cooled manifold system provided in the embodiments of this specification; Figure 11 This is a schematic diagram of a riveting scheme for connecting elements of a liquid-cooled manifold system provided in the embodiments of this specification; Figure 12 This is a schematic diagram of a welding scheme for connecting elements of a liquid-cooled manifold system provided in the embodiments of this specification; Figure 13 This is a schematic diagram of a threaded connection scheme for a liquid-cooled manifold system provided in the embodiments of this specification; Figures 14-17 This is a schematic diagram of the assembly of the connecting elements and the second mounting hole of a liquid-cooled manifold system provided in the embodiments of this specification; In the picture: 1. Connecting element; 11. Flange; 12. Connecting part; 121. Riveting part; 13. Sealing ring; 14. Bolt; 15. Nut; 2. First connecting unit; 21. First welding part; 22. Mounting hole; 3. Second connecting unit; 31. Second welding part; 32. First opening; 33. Stepped groove; 34. Second opening; 35. Second mounting hole; 4. Liquid cooling cavity; 41. Liquid inlet; 42. Liquid outlet; 5. Plug; 6. Welds. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0028] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0029] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0030] Please see Figures 1-8 This embodiment provides a liquid-cooled manifold system, which includes: The first connecting unit 2 includes a mounting hole 22 and a first welding part 21; Connecting element 1, which can be fixed at the mounting hole 22 of the first connecting unit 2; The second connecting unit 3 includes a second welding part 31. After all the connecting elements 1 are fixed to the first connecting unit 2, the first welding part 21 and the second welding part 31 are welded together to fix the first connecting unit 2 and the second connecting unit 3, thereby forming a liquid cooling cavity 4 by the first connecting unit 2 and the second connecting unit 3.

[0031] Based on the above structure, during installation, the connecting element 1 can be installed from top to bottom on the mounting holes 22 of the first connecting unit 2. The preset number of connecting elements 1 can be multiple, with each connecting element 1 corresponding one-to-one with a spaced-apart mounting hole 22 on the first connecting unit 2. The connecting element 1 can be a pipe structure for water passage or a locating pin. During installation, the main body of the connecting element 1 faces away from the first connecting unit 2. After the connecting element 1 is installed, the first connecting unit 2 and the second connecting unit 3 can be connected and combined.

[0032] Specifically, the edge of the first connecting unit 2 is provided with a welding area, which is the first welding part 21, and the corresponding position of the second connecting unit 3 is also provided with a second welding part 31 for welding. In the actual welding process, a sealed connection is formed at the connection between the first connecting unit 2 and the second connecting unit 3. Therefore, the first connecting unit 2 and the second connecting unit 3 can form a semi-sealed liquid cooling cavity 4. The liquid cooling cavity 4 is connected to the required connecting element 1 and can be liquid-cooled connected to the corresponding external functional area.

[0033] Specifically, during operation, the internal fluid can be exchanged through the liquid inlet 41 and liquid outlet 42 located on both sides of the liquid cooling chamber 4 to achieve heat dissipation.

[0034] In the above-described installation of the present invention, the corresponding connecting element 1 can be pre-installed on the first connecting unit 2, and then the first connecting unit 2 and the second connecting unit 3 can be spliced ​​together to form the liquid cooling main pipeline. This modularity is highly efficient and helps to improve installation efficiency. It also avoids deformation of the liquid cooling main pipeline caused by direct welding, thus improving the yield rate. Specifically, in the installation of the liquid cooling manifold system, it can be roughly divided into three parts for modular assembly. First, the first connecting unit 2 and the corresponding connecting element 1 are installed together. Then, the first connecting unit 2 and the second connecting unit 3 carrying the connecting element 1 are spliced ​​together. Therefore, when the first connecting unit 2 and the second connecting unit 3 are spliced ​​together, the installation of the connecting element 1 has already been completed. This avoids the stress generated by welding or riveting the connecting element 1 from affecting the deformation of the first connecting unit 2 and the second connecting unit 3 spliced ​​together to form the liquid cooling main pipeline itself. Moreover, the step-by-step modular installation is more efficient.

[0035] In one embodiment, the connecting element 1 includes a flange portion 11 and a connecting portion 12. The bottom surface of the flange portion 11 is abutted against the top surface of the first connecting unit 2, and the connecting portion 12 is disposed at the bottom of the flange portion 11, with at least a portion of the connecting portion 12 passing through the mounting hole 22. Therefore, by means of the flange portion 11, the transition area between the connecting element 1 and the first connecting unit 2 is increased, and liquid leakage between the connecting element 1 and the first connecting unit 2 must flow through the flange portion 11, thus improving the sealing performance of the product.

[0036] Furthermore, a sealing ring 13 is installed between the bottom surface of the flange portion 11 and the top surface of the first connecting unit 2, which can further improve the sealing performance. Of course, the sealing ring 13 can be installed in a sealing groove provided in the first connecting unit 2 or the flange portion 11 that matches the size of the sealing ring 13.

[0037] Specifically, the connection method between the connecting element 1 and the mounting hole 22 of the first connecting unit 2 includes, but is not limited to, welding, gluing, integral connection, and riveting, wherein riveting can include common press riveting, flip riveting, and pull riveting.

[0038] Taking riveting and rivet as examples, the connecting part 12 is riveted or riveted to the mounting hole 22, so that the riveting part 121 formed at the bottom end of the connecting part 12 and the bottom surface of the flange part 11 clamp the edge of the mounting hole 22.

[0039] Taking welding as an example, the edge of the flange 11 is welded to the top surface of the first connecting unit 2. In this embodiment, the flange 11 can be disc-shaped, and the periphery of the disc-shaped part can be used for welding operations on the outer surface of the top of the first connecting unit 2.

[0040] Of course, in another embodiment, it can be fixed by means of a threaded connection. The bottom end of the connecting element 1 includes a bolt 14 and a nut 15. The bolt 14 passes through the mounting hole 22, and the connecting element is fixed to the first connecting unit 2 by means of the nut 15 installed from the bottom of the bolt 14. Threaded assembly is simpler, uses a pre-made nut, and is highly flexible.

[0041] The following embodiments represent different combinations of the first connecting unit 2 and the second connecting unit 3.

[0042] Example 1 In this embodiment, the second connecting unit 3 includes a first opening 32, and a stepped groove 33 is formed at the edge of the first opening 32. The first connecting unit 2 is embedded in the stepped groove 33. The thickness of the first connecting unit 2 is equal to the thickness of the stepped groove 33, so that the top surface of the first connecting unit 2 installed in the stepped groove 33 is flush with the top surface of the adjacent second connecting unit 3. The size of the first opening 32 matches the outer edge of the first connecting unit 2. The side adjacent to the first opening 32 of the first connecting unit 2 is configured as a first welding part 21, and the side adjacent to the first opening 32 of the first connecting unit 2 is configured as a second welding part 31. Specifically, a first opening 32 matching the size of the first connecting unit 2 is pre-formed in the second connecting unit 3. Before welding, the first connecting unit 2 with the connecting element 1 installed is inserted into the first opening 32, and the stepped groove 33 in the first opening 32 supports the bottom outer edge of the first connecting unit 2. Since the thickness of the first connecting unit 2 is equal to that of the stepped groove 33, the first connecting unit 2 and the second connecting unit 3 fit together perfectly. Based on this, the first welding portion 21 and the second welding portion 31 at the top of their adjacent locations are welded together to achieve a mechanical connection. Specifically, after the first connecting unit 2 and the second connecting unit 3 are connected, their common ends still need to be fitted together with plugs 5 welded on both sides to achieve a semi-sealed space. In this embodiment, the stepped groove 33 increases the transition surface, resulting in a better sealing effect, and the stepped groove 33 has a simple manufacturing process.

[0043] Example 2 In this embodiment, the second connecting unit 3 includes a second opening 34, which corresponds to the position of the mounting hole 22. The first connecting unit 2 covers the top surface of the second connecting unit 3. The sidewall of the first connecting unit 2 is configured as a first welding part 21, and the second connecting unit 3 adjacent to the sidewall of the first connecting unit 2 is configured as a second welding part 31. Further, the first connecting unit 2 is U-shaped, and the second connecting unit 3 is tubular. The first connecting unit 2 is wrapped around the second connecting unit 3 along the U-shaped opening direction. Specifically, before welding, the first connecting unit 2 with the connecting element 1 installed is snapped onto the second connecting unit 3, so that the position of the mounting hole 22 and the position of the second opening 34 correspond one-to-one. Then, the edge of the first connecting unit 2 and the adjacent part of the second connecting unit 3 are welded together, and the first welding part 21 and the second welding part 31 are connected to form a mechanical connection after welding. Specifically, in practice, after the first connecting unit 2 and the second connecting unit 3 are connected to each other, their common ends still need to be fitted with plugs 5 welded on both sides to achieve a semi-sealed space. In this embodiment, the first connecting unit 2, which is covered by a U-shaped fastener, has a better sealing effect.

[0044] Example 3 In this embodiment, the first connecting unit 2 is configured as a five-sided cuboid formed by bending a flat sheet material, and the second connecting unit 3 is configured as a rectangle. The five-sided cuboid covers the rectangle and forms the liquid cooling cavity 4. Specifically, the first connecting unit 2 can be made of a sheet material, similar to a sticker, with the top surface as the center. The four sides are folded towards the installation direction of the second connecting unit 3, so that the angle between the four sides and the top surface is 90 degrees. Then, the folded cover is placed on the second connecting unit 3, which is of a matching size, and the edges are welded. Of course, in this embodiment, after the four sides of the first connecting unit 2 are folded towards the installation direction of the second connecting unit 3, the adjacent edges between the four sides and the top surface also need to be welded. In this solution, no additional connecting plug 5 is required.

[0045] Example 4 In this embodiment, the first connecting unit 2 is configured as a U-shape formed by bending a flat sheet metal, and the second connecting unit 3 is configured as a U-shape formed by bending a flat sheet metal. The openings of the upper and lower U-shaped structures face each other and interlock, forming a complete six-sided box structure that encloses the liquid cooling cavity 4. In this embodiment, the U-shaped bending components, with the pre-installed plate bent laterally and the pipe bent longitudinally, are assembled by welding. All are formed and assembled from flat sheet metal, simplifying the process. The welding points of the upper and lower U-shaped structures are mainly located at adjacent edges.

[0046] Example 5 In this embodiment, the second connecting unit 3 further includes a second mounting hole 35 for mounting the connecting element 1, specifically, to... Figures 14-15 For example, the first connecting unit 2 is configured as a U-shape formed by bending a flat sheet, and the second connecting unit 3 is configured as a U-shape formed by bending a flat sheet. The openings of the two U-shaped structures face each other and interlock, forming a complete six-sided box structure that encloses the liquid cooling cavity 4. The sidewalls and bottom of the second connecting unit 3 are provided with a corresponding number of second mounting holes 35. These second mounting holes 35 are used to install corresponding connecting elements 1, such as inlet connectors or positioning pins.

[0047] Example 6 In this embodiment, please refer to Figures 16-17 The first connecting unit 2 is configured as a five-sided cuboid formed by bending a flat plate, and the second connecting unit 3 is configured as a rectangle. The five-sided cuboid covers the rectangle and forms the liquid cooling cavity 4, with an installation method similar to that of embodiment 3. However, the bottom of the second connecting unit 3 is provided with a corresponding number of second mounting holes 35, which are used to install corresponding connecting elements 1, such as inlet connectors, positioning pins, etc. In this embodiment, some of the connecting elements 1 are also provided on the side wall of the first connecting unit 2.

[0048] After the above welding is completed, the following can be formed: Figures 1-8 The weld 6 formed in the middle achieves sealing.

[0049] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention specification and drawings are included in the scope of the patent application of the present invention.

[0050] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0051] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A liquid-cooled manifold system, characterized in that, The liquid-cooled branch pipe system includes: A first connecting unit, the first connecting unit including a mounting hole and a first welding part; A connecting element, which can be fixed at the mounting hole of the first connecting unit; The second connecting unit includes a second welding part. After all the connecting elements are fixed to the first connecting unit, the first welding part and the second welding part are welded together to fix the first connecting unit and the second connecting unit, thereby forming a liquid cooling cavity between the first connecting unit and the second connecting unit.

2. The liquid-cooled manifold system according to claim 1, characterized in that: The second connecting unit includes a first opening, and a stepped groove is formed at the edge of the first opening. The first connecting unit is embedded in the stepped groove.

3. The liquid-cooled manifold system according to claim 2, characterized in that: The thickness of the first connecting unit is equal to the thickness of the stepped groove, so that the top surface of the first connecting unit installed in the stepped groove is flush with the top surface of the adjacent second connecting unit. The size of the first opening matches the outer edge of the first connecting unit. The side of the first connecting unit adjacent to the first opening is set as a first welding part, and the side of the first opening adjacent to the first connecting unit is set as a second welding part.

4. The liquid-cooled manifold system according to claim 1, characterized in that: The second connecting unit includes a second opening, which corresponds to the position of the mounting hole. The first connecting unit is covered on the top surface of the second connecting unit. The side wall of the first connecting unit is configured as a first welding part, and the second connecting unit is configured as a second welding part adjacent to the side wall of the first connecting unit.

5. The liquid-cooled manifold system according to claim 4, characterized in that: The first connecting unit is U-shaped, and the second connecting unit is tubular. The first connecting unit is disposed on the second connecting unit along the opening direction of the U-shape.

6. The liquid-cooled manifold system according to claim 1, characterized in that: The first connecting unit is configured as a five-sided cuboid formed by bending a flat plate, and the second connecting unit is configured as a rectangle. The five-sided cuboid covers the rectangle and forms the liquid cooling cavity.

7. The liquid-cooled manifold system according to claim 1, characterized in that: The bottom end of the connecting element includes a bolt and a nut. The bolt passes through the mounting hole, and the connecting element is fixed to the first connecting unit by means of the nut installed from the bottom of the bolt.

8. The liquid-cooled manifold system according to claim 1, characterized in that: The number of connecting elements is set to multiple, and the multiple connecting elements are spaced apart on the top surface and / or side wall of the first connecting unit.

9. The liquid-cooled manifold system according to claim 1, characterized in that: The connecting element includes a flange and a connecting part. The bottom surface of the flange is in contact with the top surface of the first connecting unit. The connecting part is disposed at the bottom of the flange, and at least a portion of the connecting part passes through the mounting hole.

10. The liquid-cooled manifold system according to claim 9, characterized in that: A sealing ring is installed between the bottom surface of the flange and the top surface of the first connecting unit.

11. The liquid-cooled manifold system according to claim 9, characterized in that: The connecting part is riveted to the mounting hole.

12. The liquid-cooled manifold system according to claim 12, characterized in that: The connecting part is riveted or riveted to the mounting hole, such that the riveted part formed at the bottom end of the connecting part and the bottom surface of the flange part clamp the edge of the mounting hole.

13. The liquid-cooled manifold system according to claim 9, characterized in that: The edge of the flange is welded to the top surface of the first connecting unit.

14. The liquid-cooled manifold system according to claim 1, characterized in that: The bottom and / or sidewall of the second connecting unit are provided with a second mounting hole, and the connecting element can be fixed at the second mounting hole of the second connecting unit.

15. A method for manufacturing a liquid-cooled manifold system, used to manufacture the liquid-cooled manifold system as described in any one of claims 1-14, characterized in that, Includes the following steps: All connecting elements are fixed at the mounting holes of the first connecting unit, and then the first connecting unit with the fixing elements is welded to the second connecting unit, so that a weld is formed between the first welding part of the first connecting unit and the second welding part of the second connecting unit, and the first connecting unit and the second connecting unit form a liquid cooling cavity.

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