A power harness for limiting coolant migration in immersion liquid cooling systems

Abstract

This application relates to a power harness for limiting coolant migration in an immersion liquid cooling system. It includes a conductor, an insulating layer covering the conductor, and a first filler layer disposed between the two. The first filler layer has the same composition as the coolant but a higher viscosity. An outer sheath is provided outside the insulating layer, and a second filler layer, also of the same high-viscosity material, fills the space between the insulated core and the outer sheath. The end of the harness has a terminal, which includes an inner mold connected to the conductor and an outer mold covering the inner mold. A filling structure is provided at the connection gap between the conductor and the interface. Through this structural combination, the power harness forms a high-viscosity barrier at multiple possible liquid penetration paths, effectively preventing coolant migration due to capillary or siphon phenomena, thereby improving sealing performance, reducing liquid loss, and ensuring reliable system operation and environmental cleanliness.

Description

Technical Field

[0001] This invention relates to a power harness, and more particularly to a power harness for limiting coolant migration in immersion liquid cooling systems. Background Technology

[0002] As data centers evolve towards higher integration and higher power density, traditional air cooling methods are no longer sufficient to meet the heat dissipation requirements of high-performance electronic devices during prolonged operation. To address this bottleneck, immersion liquid cooling technology is widely used in intelligent computing centers, supercomputing centers, and other fields. This technology directly immerses information processing equipment such as servers and switches in a coolant, allowing the heat generated by electronic components to be efficiently transferred to the coolant and then carried away by the liquid circulation system, thus achieving excellent heat dissipation performance. Immersion liquid cooling systems often use cooling media such as fluorinated liquids, synthetic oils, mineral oils, or silicone oils, which places higher demands on the structural sealing, liquid resistance, and anti-liquid migration performance of various connecting cables in the system.

[0003] Taking C13-C14 interface power harnesses as an example, this type of harness is widely used in the connection process of power distribution units (PDUs) to servers and other equipment. The entire harness needs to be immersed in the coolant of the liquid cooling system for a long time. Existing immersion liquid-cooled C13-C14 power harnesses generally include: a conductor, an insulation layer covering the conductor, an outer sheath covering the entire insulated core, and connection terminals at the ends.

[0004] However, because traditional structures do not effectively limit the capillary or siphon migration path of the coolant, during immersion use, the coolant easily migrates into the wiring harness through conductor gaps or terminal connection gaps, and then conducts along the harness to the outside of the enclosure through capillary action or siphon phenomena. This not only compromises the system's airtightness, leading to significant coolant loss and increased equipment maintenance costs, but also seriously affects the cleanliness and operational safety of the data center environment. Therefore, there is an urgent need to develop a power harness that can limit coolant migration to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a power harness that can effectively block the flow of coolant along the inside of the harness in an immersion liquid cooling environment due to capillary action or siphon effect.

[0006] The technical solution adopted by the present invention to solve the above problems is: a power harness for limiting coolant migration in an immersion liquid cooling system, comprising:

[0007] Insulated wire cores, including:

[0008] conductor;

[0009] An insulating layer is disposed on the outside of the conductor;

[0010] A first filler layer is disposed between the conductor and the insulating layer to fill the gap between them. The first filler layer is configured to have the same composition as the coolant and a viscosity greater than that of the coolant.

[0011] The outer sheath is disposed on the outside of the insulated wire core;

[0012] A second filler layer is disposed between the insulated wire core and the outer sheath to fill the gap between them. The second filler layer is configured to have the same composition as the coolant and a viscosity greater than that of the coolant.

[0013] A terminal, disposed at the end of the power harness, the terminal comprising:

[0014] The inner mold includes an interface that is connected to the end of the conductor;

[0015] An outer mold is disposed outside the inner mold;

[0016] A filling structure is provided at the connection between the interface and the conductor to fill the gap at the connection.

[0017] Preferably, the insulating layer is coated on the outside of the conductor by an extrusion process to reduce the gap between the conductor and the insulating layer mold.

[0018] Preferably, the number of insulated wire cores is at least two.

[0019] The power harness has a cut end, making the end of the power harness open, so that the end of the insulated wire core covered by the outer sheath is exposed.

[0020] When the power harness is in the cut state, the end of the power harness is provided with a bidirectional check valve heat shrink assembly to close the opening at the end of the power harness and expose the end of the insulated core outside the outer sheath.

[0021] Preferably, the number of interfaces of the inner mold is the same as the number of insulated wire cores.

[0022] The conductor ends of the insulated wire core are exposed outside the insulation layer when the wire is cut, and the ends of each conductor are connected to the interfaces of each inner mold in a one-to-one correspondence.

[0023] Preferably, the end of the conductor is connected to the interface of the inner mold by a crimping process.

[0024] Preferably, the filling structure is solder, and the solder between the end of the conductor and the interface of the inner mold is a solder structure that has been melted and cooled.

[0025] Preferably, the outer mold is wrapped around the outside of the inner mold by a high-pressure injection molding process, and the end of the insulated wire core and the heat-shrinkable assembly of the bidirectional check valve are both wrapped inside the outer mold.

[0026] Preferably, the outer protective layer, the inner mold, and the outer mold are all transparent.

[0027] Preferably, the power harness further includes:

[0028] An anti-migration structure is disposed on the outside of the outer sheath and is arranged circumferentially around the outer sheath, and the anti-migration structure is formed to extend radially along the power harness.

[0029] Preferably, the anti-migration structure is recessed on the side facing the terminal in a direction away from the terminal.

[0030] The beneficial effects of the embodiments of the present invention are as follows:

[0031] Because a first filler layer is provided between the conductor and the insulation layer, and a second filler layer is provided between the insulated core and the outer sheath, and both filler layers are made of filler materials with the same composition as the coolant but with higher viscosity, and a filling structure is provided at the connection between the terminal interface and the conductor for sealing, this power harness can form high-viscosity liquid barriers at the conductor gaps, outer layer gaps, and terminal interfaces, effectively limiting the possibility of coolant migrating into the harness due to capillary action or siphon effect. This solves the problem of coolant seeping out of the system, causing liquid loss and environmental pollution in the prior art, and thus achieves the technical effects of improving system sealing reliability, reducing replenishment costs, and ensuring the cleanliness of the data center environment. Attached Figure Description

[0032] Figure 1 This is a schematic structural diagram of the insulated core portion of a power harness according to an embodiment of the present invention.

[0033] Figure 2 This is a radial cross-sectional view of a power harness proposed in one embodiment of the present invention.

[0034] Figure 3 This is a schematic structural diagram of the inner mold proposed in one embodiment of the present invention.

[0035] Figure 4 This is a schematic structural diagram of the outer mold proposed in one embodiment of the present invention.

[0036] Figure 5 This is a schematic structural domain of the anti-migration structure proposed in one embodiment of the present invention.

[0037] Figure 6This is a schematic structural diagram of a power harness proposed in one embodiment of the present invention.

[0038] Among them: 10, insulated wire core; 110, conductor; 120, insulation layer; 130, first filler layer; 20, outer sheath; 30, second filler layer; 40, terminal; 410, inner mold; 411, interface; 420, outer mold; 50, bidirectional check valve heat shrink assembly; 60, anti-migration structure. Detailed Implementation

[0039] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0040] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Please see Figure 1-4 and Figure 6 In a preferred embodiment of this application, a power harness that restricts coolant migration is proposed. This type of power harness is typically used in immersion liquid cooling systems and can effectively limit the possibility of coolant migrating into the harness due to capillary action or siphon effect, thereby overcoming the problems of coolant seeping out of the system, causing liquid loss and environmental pollution.

[0043] This type of power harness for restricting coolant migration includes an insulated core 10, an outer sheath 20, a second filler layer 30, and terminals 40. The insulated core 10 includes a conductor 110, an insulating layer 120, and a first filler layer 130. The insulating layer 120 is disposed outside the conductor 110, and the first filler layer 130 is disposed between the conductor 110 and the insulating layer 120 to fill the gap between them. The first filler layer 130 is configured to have the same composition as the coolant but a higher viscosity. The outer sheath 20 is disposed outside the insulated core 10. The second filler layer 30 is disposed between the insulated core 10 and the outer sheath 20 to... The second filling layer 30 is configured to have the same composition as the coolant and a higher viscosity than the coolant to fill the gap between the two. The terminal 40 is disposed at the end of the power harness. The terminal 40 includes an inner mold 410, an outer mold 420 and a filling structure. The inner mold 410 includes an interface 411, which is connected to the end of the conductor 110. The outer mold 420 is disposed outside the inner mold. The filling structure is disposed at the connection between the interface 411 and the conductor 110 to fill the gap at the connection.

[0044] The power harness includes the following structural units: insulated wire core 10, outer sheath 20, second filler layer 30 and terminal 40 assembly. The units are stacked in a coaxial covering structure and work together to form an anti-siphon and anti-capillary system.

[0045] In this design, conductor 110 serves as the current conduction path. A first filler layer 130 fills the space between conductor 110 and insulation layer 120. The oil used is a homogeneous oily material with a viscosity grade higher than that of coolant, filling the gaps and providing a liquid resistance barrier to reduce capillary adsorption. Insulation layer 120 is extruded onto conductor 110, resulting in uniform thickness and high density, further inhibiting liquid migration into the wire core. A second filler layer 30 is disposed between insulated wire core 10 and outer sheath 20, sharing the same properties as the first filler layer 130, forming a double protection and enhancing the overall liquid barrier capability of the wire harness. Outer sheath 20 is formed using a high-pressure injection molding process. In some embodiments, outer sheath 20 is transparent, being a transparent plastic material to allow for internal visualization. Inner mold 410 has a conductive interface 411, which connects to the end of conductor 110. In some embodiments, the end of conductor 110 is connected to the interface 411 of inner mold 410 via a crimping process. In some embodiments, to improve the sealing performance of the power harness, the filling structure is solder. The solder between the end of the conductor 110 and the interface 411 of the inner mold 410 is a molten and cooled solder structure, thereby preventing the coolant and oil from communicating. The outer mold 420 covers the outside of the inner mold 410 to provide structural strength and sealing. In some embodiments, the outer mold 420 is covered by a high-pressure injection molding process.

[0046] When the power harness operates in an immersion liquid-cooled environment, conductor 110 is energized, and the high-viscosity filler layer and multiple sealing structures form a full-path liquid migration barrier. Even if coolant passes through the contact surface of the outer sheath 20 of the harness, it is effectively blocked by the presence of the first filler layer 130 and the second filler layer 30. This is because the oil in the first filler layer 130 and the second filler layer 30 has high viscosity and high surface tension, making it difficult to be siphoned out. Furthermore, the filler layer structure runs through the entire path from conductor 110 to terminal 40, thus achieving a continuous anti-leakage channel. Moreover, in the event of a sealing failure in the system, the transparent outer mold 420 structure can assist in timely visual detection of abnormalities.

[0047] In this embodiment, a continuous liquid-blocking path is achieved by setting a first filling layer 130 between the conductor 110 and the insulation layer 120, a second filling layer 30 between the insulated core 10 and the outer sheath 20, and a filling structure at the terminal 40 connection. The first filling layer 130 and the second filling layer 30 have the same composition as the coolant but a higher viscosity, exhibiting good physical compatibility and chemical stability. The terminal 40 structure uses inner and outer molds 420 injection molding combined with solder sealing, significantly enhancing sealing performance. Furthermore, the outer sheath 20 and end components of the harness are made of transparent materials, facilitating visual monitoring of the status. Therefore, the overall structure of this power harness, through viscosity barriers, spatial isolation, and morphological design, forms a dual protection against siphoning and capillary action, effectively preventing coolant penetration, overflow, and contamination, thus improving system operational safety and maintenance efficiency.

[0048] It should be noted that the first filler layer 130 and the second filler layer 30 in this application are homologous to the coolant composition compared to other filler materials, resulting in stronger compatibility. Using an oil with the same composition as the coolant as the filler material ensures that it will not undergo stratification, chemical reaction, or precipitation under long-term immersion, temperature changes, or electric field environments, and will not introduce new sources of contamination or corrosion risks. Compared to alternative hydrophobic gel materials or silicone-based encapsulants, this type of oil exhibits superior media stability and coolant inertness in the system. Furthermore, the higher viscosity of the oil provides excellent fluid barrier capabilities. The higher viscosity of the oil allows it to form highly retainable fluid barriers in minute gaps, substantially inhibiting capillary permeation or siphon backflow. For example, when the oil of the same composition is increased from 40 cSt to 150 cSt, its capillary rise rate will decrease non-linearly, and the siphoning phenomenon driven by temperature difference can be essentially blocked. Its continuous distribution and self-healing properties are superior to other solid or semi-solid fillers. Furthermore, the oil can be evenly distributed at narrow interfaces and wet and bond with the surface, making it less prone to localized failure or detachment. When micro-cracks appear due to slight structural deformation, the oil can "compensate for its fluidity" and form a re-sealing effect, which is something that solid adhesives cannot achieve.

[0049] Secondly, existing cable liquid-proof designs typically employ a "drainage, repulsion, and corrosion prevention" approach (such as applying sealant, adding sheaths, and using hydrophobic materials). This application, however, takes the opposite approach, proposing a strategy of actively filling with a homogeneous, high-viscosity liquid to block the liquid. This requires a systematic understanding of fluid properties and capillary mechanisms. Only with a foundation in the thermodynamic mechanisms of capillary phenomena, assessment of coolant dynamic characteristics, and modeling of gap paths in multi-layered cable structures can the optimal strategy of "increasing liquid viscosity, homogeneity compatibility, and layered filling" be derived. Ordinary cable designs often consider the systemic thinking of coupling such liquid cooling systems with the cable structure. Furthermore, the power harness design and implementation path in this application is non-linear, presenting challenges in combination. Specifically, it involves the integration of multiple cross-disciplinary processes, including conductor 110 pre-coating, extrusion synchronous control, and oil encapsulation matching terminal 40 connection structure. Poor control could lead to problems such as oil leakage, construction pollution, and unstable connection resistance; therefore, there is no mature application experience in the industry. Furthermore, regarding cost, although adding oil to the cable harness may seem to increase costs, it can simultaneously act as an insulation reinforcing agent and an anti-siphoning liquid, achieving multiple functions with a single material, thus reducing the overall system processing and maintenance costs. On the other hand, if a hydrophobic gel or mechanical structure alternative were used, a protective shell would be required, along with an independent sealing module, which would actually increase costs and processing complexity.

[0050] In summary, this application employs an oil-filling strategy that uses the same composition as the coolant but with a higher viscosity. This is a systematic innovation based on a deep understanding of the migration mechanism of liquid-cooled cables, the physical properties of material interfaces, and the cable manufacturing process. It not only demonstrates significant effectiveness in preventing siphoning and capillary action, but also outperforms existing alternatives in terms of material compatibility, manufacturing process adaptability, cost control, and long-term operational reliability. This represents a groundbreaking design path that would not be easily conceived by those skilled in the art under conventional thinking.

[0051] To further enhance the effect of preventing coolant migration, in some embodiments, the insulating layer 120 is wrapped around the outside of the conductor 110 by an extrusion process to reduce the gap between the conductor 110 and the insulating layer mold.

[0052] This extrusion process allows the insulation layer 120 material to be extruded under high pressure in a high-temperature molten state and tightly adhered to the surface of the conductor 110, significantly reducing the radial gap between the conductor 110 and the insulation layer 120, and preventing the formation of potential capillary fluid migration channels due to structural loosening. This reduction in gap not only compresses the flow space of the first filler layer 130 but also enhances the overall density of the core structure. Combined with the high-viscosity first filler material, this further constructs a high-resistance anti-migration barrier, effectively preventing coolant from penetrating into the wire harness through the gaps in the conductor 110 under pressure differential or siphon effect.

[0053] In some embodiments, please refer to Figure 1 The number of insulated wire cores 10 is at least two. The end of the power harness includes a cut-out state, making the end of the power harness open, exposing the end of the insulated wire core 10 covered by the outer sheath 20. When the power harness is in the cut-out state, the end of the power harness is provided with a bidirectional check valve heat-shrink assembly 50 to close the opening at the end of the power harness and expose the end of the insulated wire core 10 outside the outer sheath 20. The number of interfaces 411 of the inner mold 410 is the same as the number of insulated wire cores 10. The end of the conductor 110 in the insulated wire core 10 is exposed outside the insulation layer 120 in the cut-out state, and the end of each conductor 110 is connected one-to-one with the interface 411 of each inner mold 410.

[0054] In this embodiment, the power harness includes at least two insulated wire cores 10, suitable for multi-circuit power supply applications. Each insulated wire core 10 includes a conductor 110, an insulating layer 120 covering the outside of the conductor 110, and a first filler layer 130 with high viscosity characteristics filled between the conductor 110 and the insulating layer 120 to suppress capillary migration of liquid along the gaps between the conductors 110.

[0055] To facilitate connection of the power harness to external device ports, the ends of the power harness can be in a cut-off state, such as... Figure 1 As shown. In this state, the outer sheath 20 at the end of the power harness is partially removed, forming an opening that exposes the end portion of the insulated core 10 encased within the outer sheath 20. The insulation layer 120 of the insulated core 10 is cut off at the end, exposing the end of its internal conductor 110 outside the insulation layer 120, facilitating connection to the inner mold 410 of the terminal 40.

[0056] To further prevent liquid from flowing back or siphoning through the end opening, the power harness is equipped with a bidirectional check valve heat-shrinkable assembly 50 at the end when the wire is cut. This assembly is fixed to the opening of the cable outer sheath 20 by heat shrinking, forming a flexible and airtight protective layer. On the one hand, it seals the opening, and on the other hand, it allows the end of the insulated core 10 to pass through to the outside for subsequent crimping of the terminal 40.

[0057] The terminal 40 assembly includes a plurality of inner mold 410 interfaces 411, the same number as the number of insulated wire cores 10. Each interface 411 is connected to a corresponding exposed conductor 110 end in each insulated wire core 10 to ensure the electrical continuity reliability of the multi-wire connection. An outer mold 420 structure is also provided outside the inner mold 410, which is injection molded to cover the outside of the inner mold 410 to further enhance the end sealing and mechanical strength.

[0058] Therefore, through the above structural configuration, a multi-layered anti-migration design for coolant is achieved from the inside of conductor 110, the core structure to the connection of terminal 40. While ensuring power supply stability, it effectively suppresses the liquid overflow problem caused by siphoning and capillary effect, and improves the reliability and adaptability of the whole line system in the immersion liquid cooling environment.

[0059] Furthermore, in order to improve the sealing performance of the power harness end, in some embodiments, the outer mold 420 covers both the end of the insulated wire core 10 and the bidirectional check valve heat shrink assembly 50 inside itself.

[0060] Specifically, the outer mold 420 can be made of a transparent polymer injection molding material that is resistant to coolant corrosion and has excellent anti-aging properties. Under high-pressure injection molding, the outer mold 420 forms a tightly fitting covering layer on the surface of the inner mold 410 and its surrounding heat-shrinkable components. Since the heat-shrinkable components are fixed at the cross-section of the outer protective layer 20, there is a further seamless filling between them and the outer mold 420, which can effectively block potential coolant migration paths formed by the end openings.

[0061] This structure achieves overall encapsulation of the core terminal connection section and heat-shrinkable sealing layer, which not only improves the structural continuity against coolant siphoning and capillary penetration, but also enhances the mechanical protection and protective integrity of the terminal 40 connection section, significantly improving the long-term sealing stability of the power harness in the liquid cooling system.

[0062] In some embodiments, the power harness further includes an anti-migration structure 60 disposed on the outside of the outer sheath 20 and circumferentially surrounding the outer sheath 20, and the anti-migration structure 60 extends radially along the power harness. The anti-migration structure 60 is recessed on the side facing the terminal 40 in a direction away from the terminal 40.

[0063] In this embodiment, to further enhance the power harness's resistance to liquid migration in an immersion liquid-cooled environment, the power harness also includes an anti-migration structure 60. The anti-migration structure 60 is disposed on the outside of the outer sheath 20 and arranged circumferentially around the outer sheath 20, that is, forming a closed structure along the circumferential direction of the cable, ensuring the construction of an additional liquid migration blocking layer on the outer surface of the power harness.

[0064] Please refer to the following: Figure 5 The anti-migration structure 60 extends radially along the power cable harness, meaning its outline protrudes or extends outward relative to the cable's central axis. This creates a localized protrusion or barrier on the outside, which helps to cut off or delay the path of liquid migration along the surface of the outer sheath 20 towards the terminal 40. Specifically, the anti-migration structure 60 can be embodied in a circular plate shape or a regular polygonal plate shape.

[0065] The anti-migration structure 60 has a recessed portion on its side facing the terminal 40, extending away from the terminal 40. This recessed area can form a "low potential energy zone" or "liquid retention zone" in the liquid migration path, interfering with the siphoning tendency of the coolant along the surface, thereby further weakening the capillary climb phenomenon of the liquid at the external interface. This recessed structure can also work with the difference in surface tension of the materials to enhance the stopping effect of the coolant at this point, preventing it from moving along the surface of the cable harness.

[0066] In summary, through the above structural design, the anti-migration structure 60 forms an additional structural liquid barrier on the basis of the outer sheath 20 of the power harness, realizing the anti-migration function of internal and external coordination. It is particularly suitable for long-term immersion or vertical wiring scenarios, effectively reducing the risk of coolant escaping along the cable path due to gravity difference, capillary traction and other factors.

[0067] The above description is merely illustrative of the invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A power harness for limiting coolant migration in an immersion liquid cooling system, characterized in that, include: Insulated wire cores, including: conductor; An insulating layer is disposed on the outside of the conductor; A first filler layer is disposed between the conductor and the insulating layer to fill the gap between them. The first filler layer is configured to have the same composition as the coolant and a viscosity greater than that of the coolant. The outer sheath is disposed on the outside of the insulated wire core; A second filler layer is disposed between the insulated wire core and the outer sheath to fill the gap between them. The second filler layer is configured to have the same composition as the coolant and a viscosity greater than that of the coolant. A terminal, disposed at the end of the power harness, the terminal comprising: The inner mold includes an interface that is connected to the end of the conductor; An outer mold is disposed outside the inner mold; A filling structure is provided at the connection between the interface and the conductor to fill the gap at the connection.

2. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 1, characterized in that, The insulating layer is wrapped around the outside of the conductor by an extrusion process to reduce the gap between the conductor and the insulating layer.

3. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 1, characterized in that: The number of insulated wire cores is at least two; The power harness has a cut end, making the end of the power harness open, so that the end of the insulated wire core covered by the outer sheath is exposed. When the power harness is in the cut state, the end of the power harness is provided with a bidirectional check valve heat shrink assembly to close the opening at the end of the power harness and expose the end of the insulated core outside the outer sheath.

4. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 3, characterized in that: The number of interfaces in the inner mold is the same as the number of insulated wire cores; The conductor ends of the insulated wire core are exposed outside the insulation layer when the wire is cut, and the ends of each conductor are connected to the interfaces of each inner mold in a one-to-one correspondence.

5. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 4, characterized in that, The end of the conductor is connected to the interface of the inner mold by a crimping process.

6. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 4 or 5, characterized in that, The filling structure is solder, and the solder between the end of the conductor and the interface of the inner mold is a solder structure that has been melted and cooled.

7. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 6, characterized in that, The outer mold is wrapped around the outside of the inner mold by a high-pressure injection molding process, and the end of the insulated wire core and the heat-shrinkable assembly of the bidirectional check valve are also wrapped inside the outer mold.

8. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 1, 2, 3, 4, 5, or 7, characterized in that, The outer protective layer, the inner mold, and the outer mold are all transparent.

9. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 1, 2, 3, 4, 5, or 7, characterized in that, Also includes: An anti-migration structure is disposed on the outside of the outer sheath and is arranged circumferentially around the outer sheath, and the anti-migration structure is formed to extend radially along the power harness.

10. A power harness for limiting coolant migration in an immersion liquid cooling system according to claim 9, characterized in that, The anti-migration structure is recessed on the side facing the terminal, away from the terminal.

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