Bundled wire harness with liquid cooling heat dissipation fixing structure

Abstract

The invention provides a bunched wire harness with a liquid cooling heat dissipation fixing structure. The bunched wire harness comprises a shell, an isolation assembly and a flow guide assembly. The shell comprises a cavity, spiral cooling fins arranged on the peripheral face of the shell and a backflow pipe. The isolation assembly comprises a partition plate consistent with the twisting direction of the heat dissipation fins and a cold flow channel penetrating through the partition plate, the partition plate is used for partitioning the wire harness, and the cold flow channel is used for conducting a cooling medium to the backflow pipe; the flow guide assembly comprises a flow dividing piece for inputting a cold area medium, a flow converging piece for discharging the cold area medium and a circulating bin for guiding a rotary cooling medium, and is used for forming a complete circulating channel. According to the invention, through dual heat dissipation of external air cooling and internal liquid cooling, the problems of uneven heat dissipation and insufficient heat dissipation of the bunched wire harness are solved; the partition plate achieves the dual functions of wire harness fixing and heat dissipation and conduction; the device is high in heat dissipation efficiency, reliable in sealing, high in adaptability and suitable for installation and heat dissipation of the high-power bunched wire harness.

Description

Technical Field

[0001] This invention relates to the technical field of wire harness assembly, and in particular to a bundled wire harness with a liquid-cooled heat dissipation and fixing structure. Background Technology

[0002] In the fields of industrial automation and mechanical equipment, bundled wire harnesses, as core components for power transmission and signal communication, are often used in high-power, high-temperature environments. The heat generated during operation tends to accumulate internally, and the high temperatures of the external environment further exacerbate this heat buildup, leading to accelerated aging of the wire harness insulation layer, decreased conductivity, and in severe cases, short circuits, burnout, and other malfunctions, directly affecting the stability and safety of equipment operation. Therefore, efficient heat dissipation and reliable fixing of bundled wire harnesses have become critical technical issues that urgently need to be addressed in the industry.

[0003] Currently, industry solutions for wire harness heat dissipation are mainly divided into two categories: air cooling and liquid cooling. Air cooling solutions often use external heat sinks or forced convection fans to cool the wire harness, but due to limitations in heat dissipation efficiency, they are unable to meet the heat dissipation requirements of high-power bundled wire harnesses and cannot solve the problem of heat accumulation inside the wire harness. Liquid cooling solutions, on the other hand, are gradually becoming the mainstream choice due to their higher heat dissipation efficiency.

[0004] For example, Chinese invention patent document with publication number "CN113541050A" discloses a liquid-cooled wire harness clamping device, including a liquid-cooled frame, heat-conducting baffles, auxiliary positioning bolts, and liquid-cooled connectors. The liquid-cooled frame is arranged in a ring shape, with a crossbeam fixedly installed inside the liquid-cooled frame. A pair of heat-conducting baffles are installed in the middle of the upper and lower side walls of the crossbeam through auxiliary positioning bolts. The heat-conducting baffles divide the frame into four fan-shaped installation chambers to prevent large-scale cables from being bundled and fixed together. At the same time, three liquid-cooled flow channels are opened on one side wall of the liquid-cooled frame, which are respectively set in the ring frame and the crossbeam of the liquid-cooled frame. Liquid-cooled connectors are installed at the end connections of the three liquid-cooled flow channels. Through forced liquid cooling and heat pipe conduction, active heat dissipation can be provided for the internally fixed bundled cables.

[0005] However, the above-mentioned liquid cooling solution still has shortcomings: on the one hand, the fixed structural design limits the area of ​​contact between the cooling path and the wiring harness, resulting in good heat dissipation in the parts of the wiring harness that are in contact with the cooling path, but poor heat dissipation in the non-contact parts, and insufficient overall heat dissipation uniformity of the wiring harness; on the other hand, air cooling and liquid cooling do not work together, relying only on a single liquid cooling method, failing to make full use of the auxiliary heat dissipation effect of airflow heat exchange, and the overall heat dissipation efficiency needs to be improved.

[0006] Therefore, this application provides a wire harness heat dissipation structure that combines liquid cooling and air cooling for synergistic effect, which has excellent heat dissipation effect on bundled wire harnesses. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a bundled wire harness with a liquid cooling heat dissipation fixing structure, which solves the problems of uneven heat dissipation and insufficient heat dissipation of the bundled wire harness through dual heat dissipation of "external air cooling + internal liquid cooling".

[0008] To achieve the above and other related objectives, the present invention provides the following technical solution: A bundled wire harness with a liquid cooling heat dissipation fixing structure includes a housing, a cavity for accommodating the wire harness, a plurality of heat dissipation fins coiled on the outer circumferential surface of the housing and spirally extended along its circumferential direction, and a plurality of return pipes penetrating its wall plate along the length direction of the housing. An isolation assembly is installed in the cavity to separate the wire harness. The isolation assembly includes several partition plates evenly arranged around the axis of the housing and a cold flow channel that passes through the partition plates along the length direction and communicates with the return pipe. The edge of the partition plate near the inner wall of the housing is adapted to the contour of the inner wall of the housing.

[0009] And a flow guiding assembly for changing the flow direction of the cooling medium, which includes a flow divider for conveying the cooling medium to the cold flow channel at the end of the housing away from the connection between the return pipe and the cold flow channel, and a flow manifold for discharging the cooling medium outward in communication with the return pipe.

[0010] To achieve the above technical solution, a dual heat dissipation structure consisting of external air cooling and internal liquid cooling is formed in the housing by heat dissipation fins on the outer circumference of the spiral disk and return pipes passing through the housing wall plate. This greatly improves the heat dissipation efficiency of the wire harness and provides a good temperature environment for the stable operation of the wire harness.

[0011] Furthermore, the isolation component is a twisted plate structure, with the partition plate and the heat dissipation fins having the same twist angle, which divides the cavity into several equal-volume receiving cavities to accommodate the wire harness.

[0012] To achieve the above technical solution, the cavity is divided into several independent accommodating spaces by a partition plate. On the one hand, this can prevent heat from accumulating in the middle of the wire bundle, and on the other hand, it can effectively alleviate the entanglement and friction between the wire bundles, thereby further generating heat.

[0013] Furthermore, the manifold is an annular structure adapted to the cross-section of the housing sidewall, which includes an annular manifold channel that is continuously and uniformly opened around its circumference on one side facing the housing and communicates with the return pipe.

[0014] To achieve the above technical solution, the cooling medium is rapidly converged without any stagnation areas by synchronously connecting the continuously and evenly distributed convergence channels in the manifold to the outlet end of the return pipe, thus improving circulation efficiency. Furthermore, the annular convergence structure is adapted to the cross-section of the housing sidewall, effectively reducing assembly gaps, improving transfer efficiency, and providing a smooth space for the assembly and fixing of the wire harness, preventing damage during operation or transportation.

[0015] Furthermore, the diverter and the manifold are coaxially arranged and configured as a petal-shaped structure adapted to the cross-section of the isolation component. It includes diverter holes that are opened on one side of the isolation component and correspond one-to-one with the cold flow channels, as well as diverter channels that communicate with the diverter holes.

[0016] To achieve the above technical solution, the diverter and the manifold are coaxially arranged, which makes it convenient for technicians to position and assemble them with the housing. At the same time, the petal structure and the partition plate are correspondingly arranged, so that the diverter holes and the liquid inlets of the cold flow channel are connected one by one, realizing the precise distribution of the cooling medium and ensuring that the heat dissipation of the wire harness in each cavity is consistent.

[0017] Furthermore, both the flow divider and the flow manifold are equipped with liquid cooling connectors that connect to an external cold source; the liquid cooling connectors are respectively connected to the return channel and the flow divider channel.

[0018] To achieve the above technical solution, a set of liquid cooling connectors connected to an external cold source enables a rapid connection between the internal cooling path and the external cold source, and establishes a closed loop for the circulation of the cooling medium.

[0019] Furthermore, the flow guiding assembly also includes a circulation chamber located on the side of the housing away from the flow divider, which is adapted to the cross-section of the housing and the isolation assembly after assembly; the circulation chamber has a return hole corresponding to and connected to the return pipe on the side facing the housing, as well as a return channel connected to the return hole and the cold flow channel respectively.

[0020] To achieve the above technical solution, the design of the circulation chamber enables the cooling medium to circulate in a redirected manner within the equipment. This allows the cooling medium, after flowing through the cold runner, to flow back to the return pipe after passing through the circulation chamber, forming a complete cooling loop. Furthermore, the circulation chamber structure is simple and clear, eliminating the need for additional piping to redirect the cooling medium and simplifying the overall structure. The return holes and the inlets of the return pipe are connected one-to-one, ensuring that all the cooling medium is guided into the return pipe, preventing leakage or diversion losses.

[0021] Furthermore, the flow divider, cold runner, circulation chamber, return pipe, and manifold are sequentially connected and configured as a circulation channel. Both ends of the return pipe and cold runner are equipped with sealing rings to maintain the seal of the circulation channel.

[0022] To achieve the above technical solution, the sealing ring is set, and the precise assembly between the flow guide component and the housing is combined to ensure the overall sealing of the circulation channel after it is connected with the circulation chamber, the manifold and the flow divider, so as to prevent the leakage of cooling medium.

[0023] Furthermore, at least four return pipes are installed inside the shell wall panel, and the torsion angle of the return pipes is consistent with the torsion angle of the heat dissipation fins.

[0024] To achieve the above technical solution, the corresponding arrangement of the return pipe and the receiving cavity allows the cooling medium to be diverted after passing through the circulation chamber and then used to perform secondary cooling on the shell wall and wiring harness along the return pipe, forming a dual liquid cooling path of internal penetration and external surround, which greatly improves the utilization rate of the cooling medium.

[0025] Furthermore, the inner wall of the housing is provided with a threaded groove that matches the partition plate, and the partition assembly is slidably assembled into the cavity along the threaded groove.

[0026] The above technical solution is achieved by using a helical assembly of the partition plate and threaded groove, which allows the isolation component to be securely installed in the cavity without easily loosening, while also facilitating disassembly, replacement, or cleaning. After assembly, there is no gap between the partition plate and the inner wall of the housing, ensuring that heat can be rapidly conducted from the partition plate, housing, and heat dissipation fins, improving the continuity of heat conduction.

[0027] As described above, the bundled wire harness with a liquid-cooled heat dissipation fixing structure of the present invention has the following beneficial effects: 1. In this application, a dual heat dissipation structure consisting of external air cooling and internal liquid cooling is formed in the housing by heat dissipation fins provided on the outer periphery of the housing and return pipes passing through the housing wall plate, which greatly improves the heat dissipation efficiency of the wire harness and provides a good temperature environment for the stable operation of the wire harness.

[0028] 2. In this application, the return pipe, which is set inside the shell wall panel and has the same torsion angle as the heat dissipation fins, and the cold flow channel, which passes through the partition plate, work together to form a dual liquid cooling path that penetrates internally and surrounds externally, which greatly improves the utilization rate of the cooling medium. Attached Figure Description

[0029] Figure 1 The diagram shown is an exploded view of a bundled wire harness with a liquid cooling heat dissipation fixing structure according to the present invention.

[0030] Figure 2 The diagram shown is a structural schematic of the shell in this invention.

[0031] Figure 3 The diagram shown is a structural schematic of the isolation component in this invention.

[0032] Figure 4The diagram shown is a partial structural schematic of the flow guiding component in this invention.

[0033] Figure 5 This is a schematic diagram showing another perspective of the structure of the flow guiding component in this invention.

[0034] Figure 6 This is a front view of the shunt component in this invention.

[0035] Figure 7 Displayed as Figure 6 A sectional view along line AA.

[0036] Figure 8 The diagram shown is a structural schematic of the circulation chamber in this invention.

[0037] Among them, 1. Shell; 11. Cavity; 111. Receiving cavity; 12. Heat dissipation fins; 13. Return pipe; 14. Threaded groove; 2. Isolation assembly; 21. Separator plate; 22. Cold flow channel; 3. Flow guiding assembly; 31. Flow splitter; 311. Flow splitter hole; 312. Flow splitter channel; 313. Threaded hole; 32. Combination assembly; 321. Combination channel; 322. Positioning hole; 33. Liquid cooling connector; 35. Circulation chamber; 351. Return hole; 352. Return channel. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0039] Please see Figures 1 to 8 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0040] Please see Figures 1 to 8 The present invention provides a bundled wire harness with a liquid cooling heat dissipation fixing structure, including a housing 1 for accommodating the wire harness, an isolation component 2 disposed inside the housing 1 to separate the wire harness, and a flow guiding component 3 for changing the flow direction of the cooling medium.

[0041] Specifically, the housing 1 includes a cavity 11 for accommodating the wire harness, several heat dissipation fins 12 spirally arranged on the outer periphery of the housing 1 and extending along its axial direction, and several return pipes 13 penetrating its wall plate along the length of the housing 1. Both the housing 1 and the heat dissipation fins 12 are made of aluminum alloy with excellent thermal conductivity, and the housing 1 is manufactured through an extrusion molding process. The heat dissipation fins 12 are fixed to the housing 1 by welding. The spirally arranged heat dissipation fins 12 on the outer periphery of the housing 1 can increase the external heat dissipation area and improve heat dissipation performance. Simultaneously, in conjunction with the return pipes 13 within the wall plate of the housing 1, a dual heat dissipation structure consisting of external air cooling and internal liquid cooling is formed, greatly improving the heat dissipation efficiency of the wire harness and providing a good temperature environment for stable operation of the wire harness. In a specific embodiment, the torsion angle of the return pipes 13 is consistent with the torsion angle of the heat dissipation fins 12, making the airflow direction outside the housing 1 consistent with the flow direction of the internal cooling medium, working synergistically to further enhance the heat dissipation effect.

[0042] See also Figure 1 and Figure 3 The isolation component 2 is installed within the cavity 11 along the length of the housing 1 to separate the wire harness. It includes several partition plates 21 evenly arranged axially around the housing 1 and cold flow channels 22 that pass through the partition plates 21 and communicate with the return pipe 13. The partition plates 21 divide the cavity 11 into several independent accommodating spaces, which on the one hand prevents heat accumulation in the middle of the wire harness bundle, and on the other hand effectively alleviates the friction between the wire harnesses, thus reducing further heat generation. The cold flow channels 22, passing through the partition plates 21, directly penetrate the interior of the bundled wire harness for targeted heat dissipation, solving the problem of heat dissipation dead zones inside the wire harness. (See also...) Figure 2 In one specific embodiment, a threaded groove 14 adapted to the edge contour of the partition plate 21 is formed on the inner wall of the housing 1. The partition plate 21 is screwed into the threaded groove 14, so that the isolation component 2 can be firmly installed in the cavity 11 and is not easy to loosen, while also being easy to disassemble, replace or clean. After assembly, there is no gap between the partition plate 21 and the inner wall of the housing 1, ensuring that heat can be quickly conducted from the partition plate 21, the housing 1 and the heat dissipation fins 12, improving the continuity of heat conduction.

[0043] Specifically, the isolation component 2 is a torsion plate structure, wherein the torsion angle of the partition plate 21 is consistent with the torsion angle of the heat dissipation fins 12, and the cavity 11 is divided into several equal-volume receiving cavities 111 for accommodating the wire harnesses. In a specific embodiment, there are four partition plates 21, and they are fixedly connected in pairs along the length direction. The torsion angle of the partition plate 21 is consistent with that of the heat dissipation fins 12, so that the flow velocity and flow direction of the airflow inside the housing 1 are consistent, reducing the flow resistance when the airflow passes through and improving the air cooling effect; at the same time, the equal-volume receiving cavities 111 keep the heat dissipation space of each wire harness uniform, avoid poor heat dissipation of local wire harnesses due to limited space, and keep the overall temperature of the multiple wire harnesses within a certain range, reducing the temperature difference between the wire harnesses.

[0044] Furthermore, since the wire harnesses have different diameters after twisting, after assembly into the receiving cavity 111, an appropriate amount of thermally conductive foam, such as graphite thermally conductive foam or silicone foam, can be filled into the receiving cavity. This can fix the wire harness without affecting its heat dissipation, preventing relative displacement between the wire harness and the receiving cavity 111 under vibration conditions, which could lead to heat dissipation failure. On the other hand, the design of the thermally conductive foam also provides vibration damping for the wire harness.

[0045] Back Figure 1 The flow guiding assembly 3 includes a flow divider 31 located at the end of the housing 1 away from the connection between the return pipe 13 and the cold flow channel 22, which conveys the cooling medium toward the cold flow channel 22, and a flow manifold 32 connected to the return pipe 13 and discharging the cooling medium outward. The flow divider 31 and the flow manifold 32 are used for the orderly delivery and discharge of the cooling medium, respectively, so that the cooling medium can dissipate heat over a large area and continuously and stably along the length of the wire harness.

[0046] Please continue reading. Figures 4 to 7 The manifold 32 is an annular structure adapted to the cross-section of the side wall of the housing 1.

[0047] Specifically, the manifold 32 includes an annular manifold channel 321 that is continuously and uniformly distributed around its circumference and communicates with the return pipe 13, facing the housing 1. The manifold channel 321 is continuously and uniformly distributed in the manifold 32 and synchronously communicates with the outlet end of the return pipe 13, ensuring rapid convergence of the cooling medium without any stagnation areas and improving circulation efficiency. Furthermore, the annular manifold structure is adapted to the cross-section of the side wall of the housing 1, which can effectively reduce assembly gaps, improve connection stability, and provide a smooth space for the assembly and fixation of the wire harness, avoiding damage during wire harness operation or transportation.

[0048] Please continue reading. Figures 5 to 7The diverter 31 and the manifold 32 are coaxially arranged and configured as a petal-shaped structure adapted to the cross-section of the isolation assembly 2. The petal-shaped structure includes diverter holes 311 facing the isolation assembly 2 and corresponding one-to-one with the cold flow channels 22, and diverter channels 312 communicating with the diverter holes 311. The coaxial arrangement of the diverter 31 and the manifold 32 facilitates the positioning and assembly of the two with the housing 1 by technicians. The petal structure corresponds to the partition plate 21, ensuring that the diverter holes 311 and the liquid inlets of the cold flow channels 22 are connected one-to-one, achieving precise distribution of the cooling medium and ensuring consistent heat dissipation of the wiring harness within each receiving cavity 111.

[0049] Furthermore, both the diverter 31 and the manifold 32 are equipped with liquid-cooled connectors 33 that connect to an external cold source. The liquid-cooled connectors 33 are respectively connected to the manifold channel 321 and the diverter channel 312. In a specific embodiment, the external cold source includes a cooling water tank and a circulating pump, and the liquid-cooled connectors 33 are standard quick-connect connectors. The two sets of liquid-cooled connectors 33 are respectively connected to the inlet and outlet pipes of the external cold source.

[0050] In one specific embodiment, the diverter 31 has a threaded hole 313, and the manifold 32 has a positioning hole 322 corresponding to the threaded groove 14. By inserting auxiliary positioning bolts into the positioning hole 322 and the threaded hole 313 in sequence, the diverter 31 and the manifold 32 can be quickly and accurately positioned coaxially, reducing the assembly error between the two and avoiding blockage of the cold flow channel 22 or the return pipe 13 due to assembly deviation. Furthermore, the bolt connection facilitates disassembly and maintenance in the later stage, reducing the maintenance cost in the later stage.

[0051] Please continue reading. Figure 8 The flow guiding component 3 also includes a circulation chamber 35 located on the side of the housing 1 away from the flow divider 31, and the circulation chamber 35 is adapted to the cross-section of the housing 1 and the isolation component 2 after assembly.

[0052] Specifically, the circulation chamber 35 has return holes 351 corresponding to and connected to the return pipe 13 on the side facing the housing 1, and return channels 352 respectively connected to the manifold and the cold flow channel 22. The circulation chamber 35 is used to realize the diversion and circulation of the cooling medium in the equipment, so that the cooling medium flowing through the cold flow channel 22 flows to the return pipe 13 after passing through the circulation chamber 35, realizing the formation of a complete cooling path loop. Moreover, the structure of the circulation chamber 35 is simple and clear, without the need for additional pipelines to divert the cooling medium, simplifying the overall structure. In addition, the return holes 351 are connected to the liquid inlets of the return pipe 13 one by one, ensuring that the cooling medium can be completely introduced into the return pipe 13, avoiding leakage or diversion loss of the cooling medium. In a specific embodiment, the circulation chamber, the manifold and the housing in the flow guiding assembly are fixedly installed by fixing bolts. Of course, this embodiment does not limit the assembly method between the three. In other embodiments, they can also be fixed by clamps, pins or even welding.

[0053] In this application, after the cooling medium is diverted by the circulation chamber 35, it cools the shell 1 wall panel and wiring harness a second time along the return pipe 13, forming a dual liquid cooling path that penetrates internally and surrounds externally, which greatly improves the utilization rate of the cooling medium.

[0054] Please continue reading. Figure 2 and Figure 3 The isolation component 2 includes four partition plates 21 that are fixedly connected in pairs, dividing the cavity 11 into four independent receiving cavities 111. At least four return pipes 13 are installed inside the housing 1, each return pipe 13 corresponding to one independent receiving cavity 111. In a specific embodiment, the number of return pipes 13 is the same as the number of cold flow channels 22 to ensure the return flow rate of the cooling medium and meet the heat dissipation requirements of the bundled wire harness.

[0055] It should be noted that the flow divider 31, cold flow channel 22, circulation chamber 35, return pipe 13, and manifold 32 are sequentially connected to the circulation channel configured for the flow of cooling medium; and both ends of the cold flow channel 22 and the return pipe 13 are equipped with sealing rings made of silicone. Through the precise assembly between the silicone sealing rings, the flow guide components, and the housing, the overall sealing of the circulation channel after it is connected to the circulation chamber 35, manifold 32, and flow divider 31 is ensured, preventing the leakage of cooling medium.

[0056] The implementation principle of a bundled wire harness with a liquid cooling heat dissipation fixing structure in this invention is as follows: The technician inputs the low-temperature coolant output from the external cold source into the distribution pipe through the liquid cooling connector 33 on the distribution component 31, and then distributes it evenly into each cold flow channel 22 passing through the distribution hole 311. The coolant flows towards the circulation chamber 35 in the cold flow channel 22, exchanges heat with the wire harness in the receiving cavity 111, absorbs the heat generated by the wire harness during operation, and then flows back into the return pipe 13 after passing through the return hole 351. Although the temperature of the coolant after the first heat absorption is higher than that when it was first input into the distribution component 31, its temperature is still lower than that of the wire harness. Therefore, when it flows through the return pipe 13, the wire harness is cooled a second time. Subsequently, the coolant after the second heat absorption process flows back to the confluence channel 321 in the manifold 32, and after concentrated return, it is discharged from the housing 1 through the liquid cooling connector 33 on the manifold 32 and flows towards the external cold source. While the coolant cools the wiring harness, the heat dissipation fins 12 on the outer periphery of the housing 1 exchange heat with the outside air, dissipating the heat conducted by the housing 1 to the outside. This, together with the cooling effect of the coolant, forms a dual heat dissipation system, ensuring the continuous and stable operation of the wiring harness.

[0057] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A bundled wire harness with a liquid-cooled heat dissipation and fixing structure, characterized in that, include: The housing (1) includes a cavity (11) for accommodating the wire harness, a plurality of heat dissipation fins (12) arranged on the outer circumferential surface of the housing (1) and spirally extending along its circumferential direction, and a plurality of return pipes (13) penetrating its wall panel along the length direction of the housing (1). An isolation assembly (2) is provided in the cavity (11) to separate the wire harness. The isolation assembly (2) includes a plurality of partition plates (21) evenly arranged around the axis of the housing (1) and a cold flow channel (22) that passes through the partition plates (21) and communicates with the return pipe (13). The edge of the partition plate (21) near the inner wall of the housing (1) is adapted to the contour of the inner wall of the housing (1). And a flow guiding assembly (3) for changing the flow direction of the cooling medium, which includes a flow divider (31) for conveying the cooling medium to the cold flow channel (22) located at the end of the housing (1) away from the connection between the return pipe (13) and the cold flow channel (22), and a flow manifold (32) for discharging the cooling medium outward in communication with the return pipe (13).

2. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 1, characterized in that, The isolation component (2) is a twisted plate structure. The twist angle of the partition plate (21) is the same as that of the heat dissipation fins (12), which divides the cavity (11) into several equal-volume receiving cavities (111) for accommodating the wire harness.

3. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 2, characterized in that, The manifold (32) is an annular structure adapted to the cross-section of the side wall of the housing (1), which includes an annular manifold channel (321) that is continuously and uniformly opened around its circumference on one side facing the housing (1) and communicates with the return pipe (13).

4. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 3, characterized in that, The diverter (31) and the manifold (32) are coaxially arranged and are configured as a petal-shaped structure adapted to the cross-section of the isolation component (2). The petal-shaped structure includes a diverter hole (311) opened on one side of the isolation component (2) and corresponding to the cold flow channel (22), and a diverter channel (312) communicating with the diverter hole (311).

5. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to any one of claims 1-4, characterized in that, Both the diverter (31) and the junction (32) are provided with liquid cooling connectors (33) that communicate with an external cold source; the liquid cooling connectors (33) are respectively connected to the return channel (352) and the diverter channel (312).

6. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 1, characterized in that, The flow guiding assembly (3) also includes a circulation chamber (35) located on the side of the housing (1) away from the flow divider (31), which is adapted to the cross-section of the housing (1) and the isolation assembly (2) after assembly; the circulation chamber (35) has a return hole (351) on the side facing the housing (1) that corresponds to and communicates with the return pipe (13) and a return channel (352) that communicates with the return hole (351) and the cold flow channel (22) respectively.

7. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 6, characterized in that, The flow divider (31), cold flow channel (22), circulation chamber (35), return pipe (13) and manifold (32) are connected in sequence and configured as a circulation channel. Both ends of the return pipe (13) and cold flow channel (22) are provided with sealing rings (4) to maintain the sealing of the circulation channel.

8. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 1, characterized in that, At least four return pipes (13) are installed inside the wall panel of the housing (1), and the torsion angle of the return pipes (13) is consistent with the torsion angle of the heat dissipation fins (12).

9. The bundled wire harness with liquid-cooled heat dissipation and fixing structure according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a threaded groove (14) that is compatible with the partition plate (21), and the partition assembly is slidably assembled into the cavity (11) along the threaded groove (14).

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