External liquid cooling heat dissipation type three-joint module

Abstract

The application discloses an external liquid cooling heat dissipation type three-joint module, relates to the technical field of robot joint modules, and comprises joint one, joint two and joint three and is of an integrated structure; a driver board assembly; a liquid cooling pipeline system, comprising joint one liquid cooling pipe groups distributed outside the joints, joint two liquid cooling pipe groups, joint three liquid cooling pipe groups and a driver board liquid cooling pipe distributed inside the joints, all or part of the pipelines of the joint one liquid cooling pipe groups, the joint two liquid cooling pipe groups and the joint three liquid cooling pipe groups are arranged in close contact with the shells of the joint one, the joint two and the joint three in correspondence, the driver board liquid cooling pipe is arranged beside a heat source of the driver board assembly, the joint one liquid cooling pipe groups, the joint two liquid cooling pipe groups and the joint three liquid cooling pipe groups are connected through a linking structure with a rotation allowance, and the linking structure is a detachable structure. The application solves the problems of insufficient heat dissipation, inconvenience in dismounting and replacement and poor thermal balance of multiple joints of the existing four-legged robot joint module under long-term high load.

Description

Technical Field

[0001] This invention relates to the field of robot joint module technology, specifically to an external liquid-cooled three-joint module. Background Technology

[0002] Quadruped robots require joint modules to provide high torque and high speed to meet the demands of heavy loads and high mobility. The power source for these joint modules is typically a frameless torque motor; however, during high-load operation, the motor windings generate a significant amount of heat, making thermal management a major pain point in the industry. Current technologies often employ air cooling or built-in heat sinks for joint modules, resulting in low heat dissipation efficiency and difficulty in addressing heat accumulation issues during multi-joint collaborative operation. Furthermore, existing cooling systems are often integrated within the module, making replacement inconvenient and unable to flexibly adapt to different operating conditions. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an external liquid-cooled heat dissipation three-joint module to solve the problems of insufficient heat dissipation, inconvenient replacement and poor thermal balance of multiple joints in existing quadruped robot joint modules under long-term high load.

[0004] To solve the above problems, the technical solution provided by the present invention is as follows:

[0005] An externally liquid-cooled three-joint module includes a joint 1, a joint 2, and a joint 3, wherein joint 1, joint 2, and joint 3 are integrated; a driver board assembly; and a liquid cooling piping system, including liquid cooling pipe groups for joint 1, joint 2, and joint 3 distributed outside the joints and liquid cooling pipe groups for driver board distributed inside the joints. All or part of the pipes of the liquid cooling pipe groups for joint 1, joint 2, and joint 3 are correspondingly and tightly attached to the outer shells of joint 1, joint 2, and joint 3. The liquid cooling pipes for driver board are located next to the heat source of the driver board assembly. The liquid cooling pipe groups for joint 1, joint 2, and joint 3 are connected by a detachable link structure with rotational allowance.

[0006] This invention addresses the issues of insufficient heat dissipation, inconvenient replacement, and poor thermal balance among multiple joints in quadruped robot joint modules under prolonged high loads. By externalizing the liquid cooling piping system and placing it in close contact with the joint shell, heat dissipation efficiency is improved. Simultaneously, the connection structure has rotational margin and is detachable, making the module easy to replace and maintain, and adapting to heat accumulation during multi-joint collaborative operation.

[0007] Optionally, the joint one liquid cooling pipe group, the joint two liquid cooling pipe group, and the joint three liquid cooling pipe group are cage-type structures. The cage-type structure includes a connected end-surrounding liquid cooling pipe one, a vertical liquid cooling pipe, and an end-surrounding liquid cooling pipe two. The end-surrounding liquid cooling pipe one and the end-surrounding liquid cooling pipe two are arranged in parallel and connected through the vertical liquid cooling pipe. The vertical liquid cooling pipes are evenly arranged.

[0008] Increasing the contact area between the liquid cooling pipes and the joint housing improves heat dissipation uniformity and efficiency. The cage-like structure covers most of the joint housing surface, preventing localized overheating, making it particularly suitable for areas with high heat generation.

[0009] Optionally, the connection structure includes a joint-1 to joint-2 liquid cooling pipe connection tube, a joint-1 to joint-3 liquid cooling pipe connection tube, and a joint-2 to joint-3 liquid cooling pipe connection tube. The joint-1 liquid cooling pipe group and the joint-2 liquid cooling pipe group are connected by a flexible joint-1 to joint-2 liquid cooling pipe connection tube. The joint-1 liquid cooling pipe group and the joint-3 liquid cooling pipe group are connected by a flexible joint-1 to joint-3 liquid cooling pipe connection tube. The joint-2 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-2 connector. The joint-1 to joint-3 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-3 connector. The joint-2 to joint-3 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-3 connector.

[0010] The design ensures that each joint liquid cooling pipe assembly can adapt flexibly during joint movement, avoiding pipe breakage or twisting. At the same time, the modular design allows for easy replacement through disassembly, improving maintenance convenience.

[0011] Optionally, the joint one-two connector, the joint one-three connector, and the joint two-three connector are connected to the connecting tube by interference fit or threaded fit.

[0012] Ensure the joint is sealed and the connection is reliable, prevent coolant leakage, and withstand the mechanical stress during joint movement.

[0013] Optionally, the joint one liquid cooling pipe assembly, joint two liquid cooling pipe assembly, joint three liquid cooling pipe assembly and driver board liquid cooling pipe are provided with coolant and connected to the joint assembly liquid pump or external drive component.

[0014] It achieves active heat dissipation by continuously removing heat through circulating coolant, and allows the system to be adapted to external drive components, improving flexibility and heat dissipation capacity.

[0015] Optionally, the joint one-two liquid cooling pipe connection pipe and the joint one-three liquid cooling pipe connection pipe are connected together, and the joint two-three liquid cooling pipe connection pipe is externally placed.

[0016] To avoid interference from connecting pipes with the precision components inside the joint, the internal layout is simplified, and external inspection and maintenance are facilitated, reducing the difficulty of disassembly and assembly.

[0017] Optionally, the outer shells of joint one, joint two, and joint three are provided with grooves, which fit into the liquid cooling pipe assembly of joint one, liquid cooling pipe assembly of joint two, and liquid cooling pipe assembly of joint three and have a matching surface shape.

[0018] By setting grooves in the outer shell to fit the liquid cooling pipe assembly, its function is to enhance the thermal contact efficiency between the liquid cooling pipe and the outer shell, reduce thermal resistance, improve heat dissipation performance, and ensure reliable pipe fixing.

[0019] Optionally, the liquid cooling piping system is made entirely of metal pipes, and the outer shells of joint one, joint two, and joint three are all made of metal components.

[0020] The liquid cooling pipes and casing are made of metal. Their function is to utilize the high thermal conductivity of metal to accelerate heat transfer, improve overall heat dissipation efficiency, and increase structural durability.

[0021] Optionally, the joint-1 liquid cooling tube assembly, joint-2 liquid cooling tube assembly, and joint-3 liquid cooling tube assembly are all integrally formed structures.

[0022] The liquid-cooled tubing assembly is a one-piece molded structure. Its function is to reduce pipe joints and connection points, reduce the risk of leakage, improve the sealing and reliability of the system, and is suitable for high-vibration environments.

[0023] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0024] The external liquid cooling pipeline system, which is tightly attached to the joint shell, enables efficient and uniform heat dissipation of the joint module, significantly improving the quadruped robot's thermal management capabilities and sustained performance under long-term high-load operation. Its modular, detachable design makes the replacement and maintenance of individual joints more convenient, effectively solving industry pain points such as severe heat accumulation and difficult maintenance in multi-joint robots, while also enhancing the overall system's reliability and adaptability. Attached Figure Description

[0025] Figure 1 A cross-sectional view of an external liquid-cooled heat dissipation three-joint module proposed in an embodiment of the present invention;

[0026] Figure 2 An external liquid-cooled heat dissipation three-joint module is presented as an embodiment of the present invention. (View 1)

[0027] Figure 3 A second external view of an external liquid-cooled heat dissipation three-joint module proposed in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the liquid cooling pipeline system of an external liquid-cooled heat dissipation three-joint module according to an embodiment of the present invention;

[0029] A. Joint 1; B. Joint 2; C. Joint 3; 1. Joint 1 front cover; 2. Joint 1 front crossed roller bearing; 3. Joint 1 second-stage planetary support; 4. Joint 1 second-stage internal gear ring; 5. Joint 1 middle shell; 6. Joint 1 stator core with winding; 7. Joint 1 rotor assembly; 8. Joint 1 second-stage center wheel; 9. Joint 1 liquid cooling tube assembly; 10. Joint 1 rear cover; 11. Joint 2 front crossed roller bearing; 12. Joint 2-3 front cover; 13. Joint 2 second-stage planetary gear shaft; 14. Joint 2 second-stage planetary gear; 15. Joint 2 planetary support bearing; 16. Joint 2 second-stage planetary support; 17. Joint 2 stator core with winding; 18. Joint 2 liquid cooling tube assembly; 19. Joint 2 rear cover; 20. Joint 2 rotor assembly; 21. Joint assembly liquid pump; 22. Driver board assembly; 23. Driver board liquid cooling tube; 2 4. Joint 2-3 external liquid cooling pipe; 25. Joint 3 front cross bearing; 26. Joint 3 front cover; 27. Joint 3 second-stage planetary carrier; 28. Joint 3 second-stage planetary gear shaft; 29. ​​Joint 3 second-stage planetary gear; 30. Joint 3 second-stage sun gear; 31. Joint 3 rotor assembly; 32. Joint 3 rear bearing; 33. Joint 3 rear cover; 34. Joint 3 liquid cooling pipe assembly; 35. Joint 3 middle shell; 36. Joint 3 vertical liquid cooling pipe; 37. Inlet liquid cooling pipe; 38. Joint 1-2 connector; 39. Joint 2-3 connector; 40. Joint 1-3 connector; 41. Joint 2 internal circulation connector; 42. End-circling liquid cooling pipe 1; 43. Vertical liquid cooling pipe; 44. End-circling liquid cooling pipe 2; 45. Joint 1-2 liquid cooling pipe connecting pipe; 46. Joint 1-3 liquid cooling pipe connecting pipe; 47. Joint 2-3 liquid cooling pipe connecting pipe. Detailed Implementation

[0030] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0031] Example 1

[0032] Combined with appendix Figure 1-4An external liquid-cooled three-joint module includes joint A, joint B, and joint C, which are integrated structures; a driver board assembly 22; and a liquid cooling pipeline system, including joint A liquid cooling pipe group 9, joint B liquid cooling pipe group 18, and joint C liquid cooling pipe group 34 distributed outside the joints and driver board liquid cooling pipe 23 distributed inside the joints. All or part of the pipes of joint A liquid cooling pipe group 9, joint B liquid cooling pipe group 18, and joint C liquid cooling pipe group 34 are correspondingly and tightly attached to the outer shells of joint A, joint B, and joint C. The driver board liquid cooling pipe 23 is located next to the heat source of the driver board assembly 22. The joint A liquid cooling pipe group 9, joint B liquid cooling pipe group 18, and joint C liquid cooling pipe group 34 are connected by a link structure with rotational allowance, and the link structure is a detachable structure.

[0033] The module comprises three integrated joints (joints one, two, and three), a actuator board assembly 22, and a liquid cooling piping system. The liquid cooling piping system is divided into an external portion (the liquid cooling pipe assemblies for joints one, two, and three) and an internal portion (the actuator board liquid cooling pipe 23). The external liquid cooling pipe assemblies are in close contact with the joint housing, directly absorbing heat generated by the joint through heat conduction; the internal liquid cooling pipes are located near the heat source of the actuator board for targeted cooling. The connection structure employs a detachable design (such as quick couplings), allowing the piping connection to remain intact during joint movement while facilitating disassembly and replacement. Coolant circulates within the piping, carrying away heat for efficient heat dissipation.

[0034] Joint A also includes a front cover 1, a front crossed roller bearing 2, a secondary planetary support 3, a secondary internal gear ring 4, a middle shell 5, a rotor assembly 7, a secondary center wheel 8, and a rear cover 10. The front cover 1, middle shell 5, and rear cover 10 form the outer shell of Joint A. Joint A and Joint B are connected by the front cover 12. The driver plate assembly 22 in the middle is connected to the secondary center wheel of Joint B and the secondary center wheel of Joint B for driving. The secondary center wheel of Joint B is surrounded by the front crossed roller bearing 2, the secondary planetary gears, and the secondary planetary support 3. The front crossed roller bearing 2 connects the secondary center wheel of Joint B and the front cover 1. The secondary center wheel of Joint B, the planetary gears, and the secondary internal gear ring 4 mesh to rotate the planetary gear train. The stator core 6 with windings and the rotor assembly 7 are located inside the middle shell 5.

[0035] Joint 2B also includes a joint 2 front crossed roller bearing 11, a joint 2-3 front cover 12, a joint 2-2 planetary gear 14 shaft 13, a joint 2-2 planetary gear 14, a joint 2 planetary support bearing 15, a joint 2-2 planetary support 16, a joint 2 rear cover 19, and a joint 2 rotor assembly 20. The joint 2 front crossed roller bearing 11 connects the joint 2-3 front cover 12 and the joint 2-2 planetary support 16. The joint 2-2 planetary gear 14 meshes with the internal gear rings of the joint 2-2 planetary gear 14 shaft 13 and the joint 2-3 front cover 12. The joint 2-2 planetary gear 14 is rotatably connected to the joint 2-2 planetary support 16 via the joint 2 planetary support bearing 15. The joint 2 rotor assembly 20 and the joint 2 winding stator core 17 are located inside the joint 2 rear cover 19.

[0036] The joint assembly liquid pump 21, actuator plate assembly 22, and actuator plate liquid cooling pipe 23 are all located below joint two. The actuator plate liquid cooling pipe 23 is arranged around the actuator plate assembly 22. The joint assembly liquid pump 21 is connected at its bottom to the joint two-three liquid cooling pipe connecting pipe and the joint two liquid cooling pipe assembly 18, which flows from the joint three liquid cooling pipe assembly 34. (See attached diagram.) Figure 2 The housing of the driver board assembly 22 is provided with an inlet liquid cooling pipe 37 for replenishing coolant or communicating with external drive components.

[0037] Joint 3C also includes a joint 3 front cross bearing 25, a joint 3 front cover 26, a joint 3 secondary planetary carrier 27, a joint 3 secondary planetary gear shaft 28, a joint 3 secondary planetary gear 29, a joint 3 secondary sun gear 30, a joint 3 rotor assembly 31, a joint 3 rear bearing 32, a joint 3 rear cover 33, and a joint 3 middle shell 35. The joint 3 front cross bearing 25 rotatably connects the joint 2-3 front cover 12 and the joint 3 front cover 26. The joint 3 front cover 26, the joint 3 middle shell 35, and the joint 3 rear cover 33 form the outer shell of joint 3C. The joint 3 secondary planetary gear 29 is rotatably connected to the joint 3 secondary planetary carrier 27 via the joint 3 secondary planetary gear shaft 28. The joint 3 secondary sun gear 30, the joint 3 secondary planetary gear 29, and the joint 3 front cover 26 have internal gear rings meshing. The joint 3 liquid cooling tube assembly 34 and the joint 3 belt-wound stator core are located at the joint 3 middle shell 35. The joint 3 rotor assembly 31 is rotatably connected to the joint 3 rear cover 33 via the joint 3 rear bearing 32.

[0038] Joint 1 liquid cooling pipe assembly 9, Joint 2 liquid cooling pipe assembly 18, and Joint 3 liquid cooling pipe assembly 34 are cage-like structures. Each cage structure includes connected end-wrap liquid cooling pipe 42, vertical liquid cooling pipe 43, and end-wrap liquid cooling pipe 44. End-wrap liquid cooling pipe 42 and end-wrap liquid cooling pipe 44 are arranged in parallel and connected by vertical liquid cooling pipes 43, which are evenly distributed. The cage structure, composed of end-wrap liquid cooling pipe 42, vertical liquid cooling pipe 43, and end-wrap liquid cooling pipe 44, forms a frame-like layout with the end-wrap pipes arranged in parallel and connected by vertical pipes. The even distribution of vertical liquid cooling pipes 43 ensures that heat is evenly transferred to the pipes when the coolant flows throughout the structure. This design is similar to a heat dissipation cage, increasing the heat exchange area and allowing the coolant to more effectively absorb and remove heat as it flows. Joint 3 liquid cooling pipe assembly 34 includes joint 3 vertical liquid cooling pipes 36.

[0039] The connection structure includes a joint-to-two liquid cooling pipe connection tube 45, a joint-to-three liquid cooling pipe connection tube 46, and a joint-to-three liquid cooling pipe connection tube 47. The joint-one liquid cooling pipe group 9 and the joint-two liquid cooling pipe group 18 are connected by the flexible joint-to-two liquid cooling pipe connection tube 45. The joint-one liquid cooling pipe group 9 and the joint-three liquid cooling pipe group 34 are connected by the flexible joint-to-three liquid cooling pipe connection tube 46. The joint-two liquid cooling pipe group 18 and the joint-three liquid cooling pipe group 34 are connected by the flexible joint-to-three liquid cooling pipe connection tube 47. The joint-to-two liquid cooling pipe connection tube 45 is divided into two sections by a detachable joint-to-two connector 38. The joint-to-three liquid cooling pipe connection tube 46 is divided into two sections by a detachable joint-to-three connector 40. The joint-to-three liquid cooling pipe connection tube 47 is divided into two sections by a detachable joint-to-three connector 39. The liquid cooling pipe assemblies between joints are connected by flexible connecting pipes (such as joint one-to-two liquid cooling pipe connecting pipe 45). These flexible pipes can bend and stretch to adapt to the relative movement of the joints. Connecting heads (such as joint one-to-two connecting head 38) divide the connecting pipes into two sections, employing a detachable method (such as a plug-in type). When a joint needs to be replaced or repaired, simply disconnecting the connecting head isolates the pipes without affecting other parts. This reduces the overall system complexity.

[0040] Joint 1-2 connector 38, Joint 1-3 connector 40, and Joint 2-3 connector 39 connect the connecting pipe via interference fit or threaded fit. Interference fit relies on tolerance design to create a tight seal between the connector and the connecting pipe; threaded fit achieves connection through a screw tightening. Both methods maintain the stability of the pipeline connection under dynamic conditions, preventing loosening due to vibration or movement. During operation, the connector withstands internal fluid pressure and external mechanical forces, ensuring uninterrupted coolant circulation.

[0041] The joint-one liquid cooling pipe assembly 9, the joint-two liquid cooling pipe assembly 18, the joint-three liquid cooling pipe assembly 34, and the actuator plate liquid cooling pipe 23 are filled with coolant and connected to the joint assembly liquid pump 21 or an external drive component. The coolant (such as water or a special liquid) fills the liquid cooling piping system and is driven to flow by the joint assembly liquid pump 21 or an external drive component (such as a central pump). As the coolant flows past the joint housing and near the actuator plate, it absorbs heat and then releases heat to the radiator or external cooling device, forming a closed-loop cycle. This active cooling mechanism can handle transient heat accumulation caused by high loads.

[0042] The joint-to-two liquid cooling pipe connection pipe 45 and the joint-to-three liquid cooling pipe connection pipe 46 are connected, while the joint-to-three liquid cooling pipe connection pipe 47 is external. The connection pipes (such as the joint-to-two liquid cooling pipe connection pipe 45) are located outside the joint module, not occupying internal space, making the joint structure more compact. During operation, the external connection pipes are exposed to the environment, allowing for quick visual or tactile inspection of their status. Maintenance can be performed by directly operating the external piping without disassembling the entire module.

[0043] The outer shells of joints one, two, and three are provided with grooves that fit into and conform to the surface shape of the liquid cooling pipe assembly 9 of joint one, the liquid cooling pipe assembly 18 of joint two, and the liquid cooling pipe assembly 34 of joint three. The grooves on the surface of the joint outer shell are machined to match the shape of the liquid cooling pipe assembly (such as a cage structure). During installation, the pipes are embedded in the grooves, increasing the contact area. During operation, heat is directly conducted from the outer shell to the pipes. The groove structure avoids air gaps, improving heat transfer efficiency, similar to the principle of heat sink fins.

[0044] The liquid cooling piping system consists entirely of metal pipes, and the outer casings of joints A, B, and C are also metal components. Metals (such as aluminum or copper) have excellent thermal conductivity; by using metal for the piping and casing, heat can be rapidly conducted from the heat source (such as the motor) to the coolant. During operation, the metal casing acts as a heat sink, working in conjunction with the liquid cooling pipes. As the coolant flows, it carries away heat from the metal surface, achieving efficient thermal management.

[0045] Joint 1 liquid cooling pipe assembly 9, Joint 2 liquid cooling pipe assembly 18, and Joint 3 liquid cooling pipe assembly 34 are all integrally molded structures. Integral molding (such as through casting or 3D printing) of the liquid cooling pipe assemblies makes the piping a continuous whole, avoiding weak points caused by welding or assembly. During operation, the coolant flows within the sealed piping, and the integral structure can withstand higher pressure and mechanical stress, ensuring long-term stable heat dissipation.

[0046] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An external liquid-cooled heat dissipation three-joint module, characterized in that, include Joint 1; Joint 2; Joint 3, wherein Joint 1, Joint 2 and Joint 3 are an integrated structure; Driver board assembly; The liquid cooling piping system includes three liquid cooling pipe groups distributed outside the joint: a joint-1 liquid cooling pipe group, a joint-2 liquid cooling pipe group, and a joint-3 liquid cooling pipe group, and a actuator plate liquid cooling pipe distributed inside the joint. All or part of the pipes of the joint-1, joint-2, and joint-3 liquid cooling pipe groups are correspondingly and tightly attached to the outer shells of the joint-1, joint-2, and joint-3. The actuator plate liquid cooling pipes are located next to the heat source of the actuator plate assembly. The joint-1, joint-2, and joint-3 liquid cooling pipe groups are connected by a link structure with rotational allowance. The link structure is a detachable structure, allowing the pipes to remain connected during joint movement. The joint one liquid cooling tube group, joint two liquid cooling tube group, and joint three liquid cooling tube group are cage-type structures. The connection structure includes a joint-1 to joint-2 liquid cooling pipe connection tube, a joint-1 to joint-3 liquid cooling pipe connection tube, and a joint-2 to joint-3 liquid cooling pipe connection tube. The joint-1 liquid cooling pipe group and the joint-2 liquid cooling pipe group are connected by a flexible joint-1 to joint-2 liquid cooling pipe connection tube. The joint-1 liquid cooling pipe group and the joint-3 liquid cooling pipe group are connected by a flexible joint-1 to joint-3 liquid cooling pipe connection tube. The joint-2 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-2 connector. The joint-1 to joint-3 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-3 connector. The joint-2 to joint-3 liquid cooling pipe connection tube is divided into two sections by a detachable joint-1 to joint-3 connector.

2. The external liquid-cooled heat dissipation three-joint module according to claim 1, characterized in that, The cage structure includes a first end-circling liquid cooling pipe, a vertical liquid cooling pipe, and a second end-circling liquid cooling pipe connected together. The first end-circling liquid cooling pipe and the second end-circling liquid cooling pipe are arranged in parallel and connected by the vertical liquid cooling pipe, which is evenly distributed.

3. The external liquid-cooled heat dissipation three-joint module according to claim 1, characterized in that, The joint one-two connector, the joint one-three connector, and the joint two-three connector are connected to the connecting tube by interference fit or threaded fit.

4. An external liquid-cooled heat dissipation three-joint module according to claim 1 or 3, characterized in that, The joint-1 liquid cooling pipe assembly, joint-2 liquid cooling pipe assembly, joint-3 liquid cooling pipe assembly, and driver board liquid cooling pipe are equipped with coolant and connected to the joint assembly liquid pump or external drive component.

5. The external liquid-cooled heat dissipation three-joint module according to claim 4, characterized in that, The joint 1-2 liquid cooling pipe connection pipe and the joint 1-3 liquid cooling pipe connection pipe are connected, while the joint 2-3 liquid cooling pipe connection pipe is external.

6. The external liquid-cooled heat dissipation three-joint module according to claim 1, characterized in that, The outer shells of joint one, joint two and joint three are provided with grooves, which fit into the liquid cooling pipe assembly of joint one, liquid cooling pipe assembly of joint two and liquid cooling pipe assembly of joint three and their surface shapes match.

7. The external liquid-cooled heat dissipation three-joint module according to claim 1, characterized in that, All liquid cooling piping systems are made of metal, and the outer shells of joint one, joint two, and joint three are all made of metal.

8. The external liquid-cooled heat dissipation three-joint module according to claim 1, characterized in that, The joint-one liquid cooling tube assembly, joint-two liquid cooling tube assembly, and joint-three liquid cooling tube assembly are all integrally molded structures.

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