A cable with shielding function, a hub motor and a new energy vehicle

Abstract

The utility model relates to hub motor accessory technical field discloses a cable, hub motor and new energy vehicle with shielding function, wherein the cable includes power supply wire harness, signal wire harness and sheath, the outer surface of signal wire harness is wrapped with metal shielding layer, the power supply wire harness the signal wire harness with the metal shielding layer all are located in the sheath, and the metal shielding layer wraps signal wire harness, can significantly reduce the influence of external electromagnetic interference to signal wire harness, prevents the electromagnetic radiation interference of cable internal signal to outside simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of hub motor accessories, and in particular to a cable with shielding function, a hub motor, and a new energy vehicle. Background Technology

[0002] In-wheel motor cables play a crucial role in new energy vehicles, serving as a core component of the in-wheel motor drive system. In-wheel motor technology integrates the drive, transmission, and braking systems within the wheel, eliminating complex components like clutches, gearboxes, and drive shafts found in traditional vehicles. This significantly improves transmission efficiency, saves energy, and simplifies the overall vehicle structure. The application environment for in-wheel motor cables is extremely complex. They must operate normally under conditions of high and low temperatures, severe vibration, and variable weather, while maintaining strong anti-interference capabilities and high control precision under various complex driving conditions such as starting, climbing, and high-speed driving.

[0003] However, in practical applications, the hub motor lead-out cables have also revealed some shortcomings. The most prominent problem is that the signal is easily interfered with, resulting in low signal transmission speed. Due to the complex and variable operating environment of the hub motor drive system, the cable is often subjected to electromagnetic interference from various sources when transmitting signals. This interference not only affects the integrity and accuracy of the signal but also causes a significant decrease in signal transmission speed, thereby affecting the vehicle's control precision and overall performance. Especially in strong electromagnetic environments, the cable's shielding effect may be inadequate, further exacerbating the signal interference problem and posing a potential hazard to the safe operation of hub motors using this cable. Utility Model Content

[0004] To overcome at least one of the defects described in the prior art, this utility model provides a shielded cable, a hub motor, and a new energy vehicle. This solves the signal interference problem of the hub motor's lead-out cable.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A shielded cable includes:

[0007] Power supply harness;

[0008] A signal harness, the outer surface of which is covered with a metal shielding layer;

[0009] The power supply harness, the signal harness, and the metal shielding layer are all housed within the sheath.

[0010] By adopting the above solution, the metal shielding layer wrapping the signal harness can significantly reduce the impact of external electromagnetic interference on the signal harness, while preventing electromagnetic radiation interference from the internal signals of the cable to the outside.

[0011] Furthermore, the metal shielding layer is an aluminum film, and a copper wire for grounding is disposed within the aluminum film.

[0012] By adopting the above solution, the aluminum film itself is lightweight, highly conductive, and has good electromagnetic shielding capabilities, which can effectively block the influence of external electromagnetic interference on the signal harness. The copper wire has better conductivity than aluminum. By embedding it inside the aluminum film and grounding it, the interference current can be quickly conducted to the ground, further improving the shielding effect, especially in high-frequency signal transmission or strong electromagnetic environments.

[0013] The combination of aluminum film and copper wire solves the problem of high grounding resistance that may exist in traditional pure aluminum film shielding layers. The copper wire is directly embedded in the aluminum film as a conductive path, reducing the contact resistance at the grounding point and ensuring that the shielding layer is always in an effective grounding state, avoiding shielding failure or signal interference caused by poor grounding.

[0014] Aluminum film is low in cost and lightweight, making it suitable as a large-area shielding material. Copper wire has excellent conductivity but is more expensive. Through local embedding design, it can leverage its performance advantages in critical grounding paths, balancing performance and economy.

[0015] The embedding of copper wires can enhance the mechanical strength of the aluminum film shielding layer, reduce the risk of shielding layer damage caused by bending and vibration, and the synergistic effect of aluminum film and copper wires can improve the shielding performance stability of the cable in high temperature, low temperature or humid environment and extend its service life.

[0016] Furthermore, the metal shielding layer is a copper film or a copper mesh.

[0017] By adopting the above scheme, when copper film is selected as the metal shielding layer, the metal shielding layer has the advantages of being lightweight and having high efficiency in low-frequency shielding, making it suitable for cost-sensitive or low-frequency interference scenarios.

[0018] When copper mesh is selected as the metal shielding layer, the metal shielding layer has strong high-frequency shielding performance and high mechanical strength, making it suitable for high-speed signal transmission or harsh working conditions.

[0019] When a composite structure of copper film and copper mesh is selected for the metal shielding layer, the multi-layer design of copper film and copper mesh can cover interference across the entire frequency band, taking into account shielding effectiveness, mechanical strength and installation adaptability, providing better solutions for scenarios such as new energy vehicles, industrial automation, and data centers.

[0020] Furthermore, it also includes a wire harness isolation component, which is disposed inside the sheath. The wire harness isolation component has multiple branch holes, and the power supply wire harness and the signal wire harness are respectively inserted into the branch holes one by one, and the power supply wire harness and the signal wire harness are sealed to their respective corresponding branch holes.

[0021] By adopting the above solution, the outer surfaces of the power supply harness and signal harness are in direct contact with the inner wall of the branch hole of the harness isolation component, forming a physical sealing interface and improving the waterproof sealing performance of the cable.

[0022] Furthermore, it also includes a locking clamp, which is sleeved on the wire harness isolation member and the locking clamp is interference-fitted with the wire harness isolation member.

[0023] By adopting the above solution, the interference fit between the locking clamp and the wire harness isolation component uses mechanical interlocking force to uniformly compress the outer wall of the wire harness isolation component, thereby applying radial pressure to the branch hole. This results in the inner wall of the branch hole undergoing elastic deformation towards the power supply and signal wire harnesses, ultimately increasing the waterproof sealing performance of the branch hole where the wire harness isolation component is located.

[0024] Furthermore, the sheath also includes a waterproof sealing sleeve located at one end of the sheath. The power supply harness, the signal harness, and the metal shielding layer all pass through the waterproof sealing sleeve, and the waterproof sealing sleeve is sealed to the power supply harness and the metal shielding layer respectively. The harness isolation component is located inside the waterproof sealing sleeve.

[0025] By adopting the above solution, the wire harness isolation component is completely placed inside the sleeve. The sealing structure of the waterproof and sealed sleeve prevents external contaminants from entering the branch connection point, reducing the risk of poor contact or short circuit. The sealing fit between the branch component and the inner wall of the sleeve prevents the branch point from becoming a weak point in the cable.

[0026] The metal shielding layer, inside the sleeve, is protected along with the signal and power supply harnesses. This not only suppresses electromagnetic interference but also prevents physical contamination through the sleeve's waterproof seal, forming multiple layers of protection. The tight contact between the waterproof, sealed inner wall of the sleeve and the metal shielding layer prevents moisture from entering the metal shielding layer in strong electromagnetic environments, avoiding problems such as decreased conductivity or corrosion caused by moisture.

[0027] Furthermore, the sheath includes:

[0028] The wear-resistant layer is made of fluororubber, or is made of a blend of EPDM rubber and EVM rubber;

[0029] A heat-resistant layer, wherein the heat-resistant layer is silicone rubber;

[0030] The wear-resistant layer encloses the heat-resistant layer, and the heat-resistant layer encloses the power supply harness, the signal harness, and the metal shielding layer.

[0031] By adopting the above method, the specific gravity of fluororubber (FKM) is approximately 1.9 g / cm³. 3 The specific gravity of silicone rubber is 1.05-1.15 g / cm³. 3 By using only fluororubber for the wear-resistant layer and a lower-density silicone rubber for the inner heat-resistant layer to wrap the core, the proportion of fluororubber used can be significantly reduced, thereby reducing the overall weight and cost of the composite cable. In addition, using fluororubber as the wear-resistant layer can ensure the wear resistance of the composite cable, and using silicone rubber with good temperature resistance in the heat-resistant layer inside the wear-resistant layer can ensure the temperature resistance of the composite cable.

[0032] The specific gravity of ethylene propylene diene monomer (EPDM) rubber is 0.85-0.95 g / cm³. 3 The specific gravity of EVM rubber is 0.90-1.00 g / cm³. 3 The specific gravity of EPDM and EVM blends is significantly lower than that of fluororubber. The specific gravity of EPDM and EVM blends ranges from 0.88 to 1.5 g / cm³. 3 Between, and silicone rubber (1.05-1.15 g / cm³) 3 When combined, the weight of the composite cable can be reduced, and the cost of EPDM and EVM rubber is much lower than that of fluororubber, thus reducing the overall weight and cost of the composite cable. Furthermore, the EPDM and EVM blend has superior abrasion resistance, ensuring the abrasion resistance performance of the composite cable. The use of silicone rubber with good temperature resistance in the temperature-resistant layer inside the abrasion-resistant layer ensures the temperature resistance performance of the composite cable.

[0033] Furthermore, the metal shielding layer extends from inside the sheath to the wire harness isolation component.

[0034] By adopting the above solution, the metal shielding layer extends from inside the sheath to the wire harness isolator, so that when the signal harness includes multiple signal lines, each signal line can be isolated and sealed at the wire harness isolator.

[0035] This utility model also provides a hub motor, comprising:

[0036] A hub motor body, the hub motor body having a motor shaft having a wire-passing hole;

[0037] The aforementioned shielded cable is threaded through the cable pass-through hole.

[0038] By adopting the above solution, the metal shielding layer wraps around the signal harness, which can significantly reduce the impact of external electromagnetic interference on the signal harness, and at the same time prevent the internal signals of the cable from interfering with external electromagnetic radiation, thereby improving the safety and stability of the hub motor during use.

[0039] Furthermore, the cable includes a sealing sleeve, which is fitted onto the outer surface of the sheath. The sealing sleeve has an elastic sealing part that abuts against the inner wall of the cable passage hole.

[0040] By adopting the above solution, the elastic sealing part is tightly abutted against the inner wall of the wire hole, forming a reliable dynamic sealing structure, which effectively prevents external pollutants such as moisture, dust, and oil from entering the hub motor, improves the protection level of the hub motor in harsh environments, and ensures the operational stability of the hub motor.

[0041] This utility model also provides a new energy vehicle, including the aforementioned hub motor.

[0042] By adopting the above solution, the metal shielding layer wrapping the signal harness can significantly reduce the impact of external electromagnetic interference on the signal harness, while preventing electromagnetic radiation interference from the internal signals of the cable to the outside, thereby improving the safety and stability of new energy vehicles during use.

[0043] In summary, the shielded cable, hub motor, and new energy vehicle provided by this utility model have the following technical effects:

[0044] The metal shielding layer wraps around the signal harness, which can significantly reduce the impact of external electromagnetic interference on the signal harness, and at the same time prevent the internal signals of the cable from causing electromagnetic radiation interference to the outside. Attached Figure Description

[0045] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0046] Figure 2 This is a schematic diagram of the concealed waterproof sealing sleeve structure of this utility model;

[0047] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0048] Figure 4 This is a schematic diagram of the wire harness isolation component and locking clamp structure of this utility model;

[0049] Figure 5 This is an enlarged structural diagram of the concealed waterproof sealing sleeve of this utility model;

[0050] Figure 6 A schematic diagram of the composite cable of this utility model with a sealing sleeve.

[0051] Figure 7 This is a three-dimensional structural diagram of the sealing sleeve of this utility model.

[0052] The meanings of the reference numerals in the attached drawings are as follows: 1. Power supply harness; 2. Signal harness; 3. Sheath; 31. Wear-resistant layer; 32. Temperature-resistant layer; 4. Metal shielding layer; 5. Harness isolation component; 51. Branch hole; 6. Locking clamp; 7. Waterproof sealing sleeve; 8. Sealing sleeve; 81. Elastic sealing part. Detailed Implementation

[0053] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0054] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0055] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0057] See Figures 1-7 This utility model discloses a cable with shielding function, including a power supply harness 1, a signal harness 2 and a sheath 3. The outer surface of the signal harness 2 is wrapped with a metal shielding layer 4, and the power supply harness 1, the signal harness 2 and the metal shielding layer 4 are all located inside the sheath 3.

[0058] Specifically, the power supply harness 1 can be made of multiple strands of copper conductors twisted together, with an external insulation layer, for transmitting high current and providing main power to equipment or motors. The signal harness 2 can be made of thin-diameter copper conductors or optical fibers, with an external insulation layer, for transmitting control signals, sensor data, or communication signals. A metal shielding layer 4 wraps around the outer surface of the signal harness 2 to shield against external electromagnetic interference and prevent the signal harness 2 from radiating electromagnetic waves. The sheath 3 can be made of flexible insulating material, completely covering the power supply harness 1, signal harness 2, and metal shielding layer 4, providing mechanical protection, insulation, and environmental protection. The sheath 3 is formed by extrusion, tightly wrapping the internal structure to prevent the harnesses from loosening or shifting.

[0059] By setting a metal shielding layer 4 on the outside of the signal harness 2, interference from external electromagnetic fields to the signal harness 2 is effectively isolated, improving signal transmission stability. Furthermore, the power supply and signal lines are integrated within the same sheath 3, saving installation space and facilitating wiring. Additionally, the sheath 3 provides mechanical protection and insulation, preventing short circuits or signal interruptions caused by wear or compression.

[0060] Optionally, the power supply harness 1 includes a first power supply harness 1, a second power supply harness 1, and a third power supply harness 1, used to transmit three-phase AC power or high-power DC power. Each power supply harness 1 is made of multiple strands of copper conductors twisted together and covered with an insulation layer (such as polyethylene, cross-linked polyethylene XLPE, or polyvinyl chloride PVC), possessing good conductivity and insulation properties. The three power supply harnesses 1 are arranged symmetrically to effectively balance current distribution and reduce electromagnetic interference. The signal harness 2 is located between or to the side of the power supply harnesses 1, and is rationally arranged according to electromagnetic compatibility requirements.

[0061] See Figure 1 and Figure 2 As shown, in some embodiments, the metal shielding layer 4 is an aluminum film, and a copper wire for grounding is disposed inside the aluminum film.

[0062] Specifically, the aluminum film itself is lightweight, highly conductive, and has good electromagnetic shielding capabilities, which can effectively block the influence of external electromagnetic interference on signal harness 2. The copper wire has better conductivity than aluminum. By embedding it inside the aluminum film and grounding it, the interference current can be quickly conducted to the ground through the metal frame, further improving the shielding effect, especially in high-frequency signal transmission or strong electromagnetic environments.

[0063] The combination of aluminum film and copper wire solves the problem of high grounding resistance that may exist in traditional pure aluminum film shielding layers. The copper wire is directly embedded in the aluminum film as a conductive path, reducing the contact resistance at the grounding point and ensuring that the shielding layer is always in an effective grounding state, avoiding shielding failure or signal interference caused by poor grounding.

[0064] Aluminum film is low in cost and lightweight, making it suitable as a large-area shielding material. Copper wire has excellent conductivity but is more expensive. Through local embedding design, it can leverage its performance advantages in critical grounding paths, balancing performance and economy.

[0065] The embedding of copper wires can enhance the mechanical strength of the aluminum film shielding layer, reduce the risk of shielding layer damage caused by bending and vibration, and the synergistic effect of aluminum film and copper wires can improve the shielding performance stability of the cable in high temperature, low temperature or humid environment and extend its service life.

[0066] See Figure 1 and Figure 2 As shown, in some other embodiments, the metal shielding layer 4 is a copper film or a copper mesh.

[0067] Specifically, when copper film is selected for the metal shielding layer 4, the metal shielding layer 4 has advantages such as lightweight and high efficiency in low-frequency shielding, making it suitable for cost-sensitive or low-frequency interference scenarios.

[0068] When copper mesh is selected for the metal shielding layer 4, the metal shielding layer 4 has strong high-frequency shielding performance and high mechanical strength, making it suitable for high-speed signal transmission or harsh working conditions.

[0069] When the metal shielding layer 4 is selected as a composite structure of copper film and copper mesh, the multi-layer design of copper film and copper mesh can cover the entire frequency band interference, taking into account shielding effectiveness, mechanical strength and installation adaptability, and providing better solutions for scenarios such as new energy vehicles, industrial automation and data centers.

[0070] As an option, copper film (such as copper foil) has extremely high conductivity, effectively reflecting and absorbing low-frequency electromagnetic waves. It forms a continuous shielding layer through the Faraday cage principle, significantly suppressing external electromagnetic interference. It offers extremely high shielding effectiveness against low-frequency interference (such as power supply noise and motor harmonics), making it suitable for industrial control, medical equipment, and other applications. The copper film thickness can be selected from 0.02–0.05 mm; it is lightweight and easy to roll, adapting to cable bending requirements and reducing mechanical stress damage to the shielding layer. The cost of a single-layer copper film shielding is lower than that of a multi-layer copper mesh braided structure, making it suitable for low-to-medium frequency applications with moderate shielding performance requirements.

[0071] Copper mesh (such as braided mesh made of pure copper wire or tinned copper wire) forms a dense metal grid through a multi-layered braided structure. Utilizing the skin effect and hysteresis loss mechanism, it achieves efficient shielding attenuation at high frequencies, making it particularly suitable for high-speed signal transmission. Copper mesh uses plain or twill weave technology, with wire diameters ranging from 0.04 to 3 mm. Its tensile strength is higher than that of copper film, allowing it to withstand physical stresses such as cable bending and stretching, thus extending its service life.

[0072] A double-layer copper mesh + copper film composite structure can simultaneously cover low-frequency (copper film reflection) and high-frequency (copper mesh absorption) interference, providing high shielding effectiveness and meeting the needs of extreme electromagnetic environments (such as radar stations and data centers). Furthermore, the braided structure of the copper mesh allows for direct, large-area contact with the grounding terminal, reducing grounding resistance and preventing shielding failure due to poor contact. When used in conjunction with the copper mesh, the copper film can achieve effective grounding, further releasing interference current. It also adapts to complex installation requirements such as cable conduit and cable tray installation. Copper has better oxidation resistance than aluminum and maintains stable conductivity even after long-term use, making it suitable for harsh environments such as high temperatures and humidity.

[0073] See Figure 2-4 As shown, in some embodiments, the cable further includes a wire harness isolation member 5, which is disposed inside the sheath 3. The wire harness isolation member 5 has multiple branch holes 51, and the power supply wire harness 1 and the signal wire harness 2 are respectively inserted into the branch holes 51 in a corresponding manner, and the power supply wire harness 1 and the signal wire harness 2 are sealed to their respective corresponding branch holes 51.

[0074] Specifically, during the molding process of the sheath 3, gaps may exist between the sheath 3 and the internal power supply harness 1 and signal harness 2, resulting in imperfections in the seal between the sheaths 3. To address this issue, the harness isolation component 5 is an independent connection structure, typically located at the end of the cable, used to connect or manage multiple branch lines of the cable trunk. The harness isolation component 5 has multiple branch holes 51, the number of which matches the number of power supply harness 1 and signal harness 2. Ideally, the body material of the harness isolation component 5 should be made of a flexible insulating material with sufficient strength, possessing good mechanical strength, heat resistance, and flame retardant properties. More importantly, the harness isolation component 5 can improve the sealing performance at the branch holes 51 through a slight deformation. Correspondingly, the diameter of the branch holes 51 can be slightly smaller than the dimensions of their corresponding power supply harness 1 and signal harness 2, thereby improving the sealing performance at the branch holes 51 through interference fit between the power supply harness 1 and signal harness 2 and their corresponding branch holes 51.

[0075] See Figure 2-4 As shown, in some embodiments, the cable further includes a locking clamp 6, which is sleeved on the wire harness isolation member 5, and the locking clamp 6 and the wire harness isolation member 5 are interference-fitted.

[0076] Specifically, the interference fit between the locking clamp 6 and the wire harness isolation component 5 uses mechanical interlocking force to uniformly compress the outer wall of the wire harness isolation component 5, thereby applying radial pressure to the branch hole 51. This causes the inner wall of the branch hole 51 to undergo elastic deformation towards the power supply wire harness 1 and the signal wire harness 2, ultimately increasing the waterproof sealing performance of the wire harness isolation component 5 at the branch hole 51.

[0077] When the wire harness isolator 5 is made of flexible polymer material, the pressure applied by the locking clamp 6 to the wire harness isolator 5 can be better transferred to the hole wall of the branch hole 51, thereby improving the sealing effect at the branch hole 51.

[0078] See Figure 1-3 As shown, in some embodiments, the sheath 3 further includes a waterproof sealing sleeve 7, which is located at one end of the sheath 3. The power supply harness 1, the signal harness 2, and the metal shielding layer 4 all pass through the waterproof sealing sleeve 7, and the waterproof sealing sleeve 7 is sealed to the power supply harness 1 and the metal shielding layer 4 respectively. The harness isolation member 5 is located inside the waterproof sealing sleeve 7.

[0079] Specifically, the sheath 3 also includes a waterproof sealing sleeve 7, which is located at one end of the sheath 3. The wire harness isolation component 5 is completely placed inside the waterproof sealing sleeve 7. The sealing structure of the waterproof sealing sleeve 7 prevents external contaminants from entering the branch connection point, reducing the risk of poor contact or short circuit. The sealing fit between the wire harness isolation component 5 and the inner wall of the waterproof sealing sleeve 7 prevents the wire harness isolation component 5 from becoming a weak point in the cable.

[0080] The metal shielding layer 4, within the waterproof sealing sleeve 7, is protected along with the signal harness 2 and the power supply harness 1. This not only suppresses electromagnetic interference but also prevents physical contamination through the waterproof seal of the sleeve, forming multiple layers of protection. The tight contact between the inner wall of the waterproof sealing sleeve 7 and the metal shielding layer 4 prevents moisture from entering the metal shielding layer in a strong electromagnetic environment, avoiding problems such as decreased conductivity or corrosion of the metal shielding layer 4 due to moisture.

[0081] See Figure 5 As shown, in some embodiments, the sheath 3 includes a wear-resistant layer 31 and a heat-resistant layer 32. The wear-resistant layer 31 is made of fluororubber, or is made of a blend of EPDM rubber and EVM rubber. The heat-resistant layer 32 is made of silicone rubber. The wear-resistant layer 31 wraps the heat-resistant layer 32, and the heat-resistant layer 32 wraps the power supply harness 1, the signal harness 2, and the metal shielding layer 4.

[0082] Specifically, due to the heavy weight and high cost of fluororubber, the wear-resistant layer 31 is made of fluororubber, or a blend of EPDM rubber and EVM rubber. This can reduce the overall weight and cost of the sheath 3 by reducing the amount of fluororubber used or eliminating its use.

[0083] More specifically, the specific gravity of fluororubber (FKM) is approximately 1.9 g / cm³, while that of silicone rubber is 1.05-1.15 g / cm³. By using only fluororubber for the wear-resistant layer 31 and a lower-specific-gravity silicone rubber for the inner heat-resistant layer 32 to wrap the core, the proportion of fluororubber used can be significantly reduced, thereby lowering the overall weight and cost of the composite cable. In addition, using fluororubber as the wear-resistant layer 31 ensures the wear resistance of the composite cable, and using silicone rubber with good temperature resistance in the heat-resistant layer 32 inside the wear-resistant layer 31 ensures the temperature resistance of the composite cable.

[0084] The specific gravity of ethylene propylene diene monomer (EPDM) rubber is 0.85-0.95 g / cm³, and that of EVM rubber is 0.90-1.00 g / cm³, both significantly lower than that of fluororubber. The specific gravity of EPDM / EVM blended rubber is between 0.88-1.5 g / cm³, and when combined with silicone rubber (1.05-1.15 g / cm³), it reduces the weight of the composite cable. Furthermore, the cost of EPDM / EVM rubber is much lower than that of fluororubber, thus reducing the overall weight and cost of the composite cable. In addition, EPDM / EVM blended rubber has superior wear resistance, ensuring the wear resistance performance of the composite cable. The use of silicone rubber with good temperature resistance in the temperature-resistant layer 32 inside the wear-resistant layer 31 ensures the temperature resistance performance of the composite cable. The EPDM / EVM blended rubber technology has been extensively documented in existing technologies and publications; therefore, this solution utilizes existing EPDM / EVM blended rubber mixing techniques. The EPDM / EVM blend rubber has a lower specific gravity than fluororubber, further reducing the specific gravity compared to the fluororubber solution.

[0085] In some embodiments, the metal shielding layer 4 extends from the sheath 3 to the wire harness isolation member 5.

[0086] Specifically, the metal shielding layer 4 extends from the sheath 3 to the wire harness isolation member 5, so that when the signal wire harness 2 includes multiple signal lines, the multiple signal lines can be isolated and sealed one by one at the wire harness isolation member 5.

[0087] See Figure 1-7 As shown, this utility model also provides a hub motor, including a hub motor body and the aforementioned shielded cable. The hub motor body has a motor shaft with a cable through hole, and the cable passes through the cable through the cable through the cable through the cable.

[0088] Specifically, the hub motor body has a motor shaft, and the motor shaft has a wire hole. The diameter of the wire hole corresponds to the outer diameter of the cable to ensure smooth cable installation. The hub motor uses a cable as the lead cable. The cable has a metal shielding layer 4 to wrap the signal harness 2, which can significantly reduce the impact of external electromagnetic interference on the signal harness 2, and at the same time prevent the internal signal of the cable from interfering with external electromagnetic radiation, thereby improving the safety and stability of the hub motor during use.

[0089] See Figure 6 and Figure 7 As shown, in some embodiments, the cable includes a sealing sleeve 8, which is fitted onto the outer surface of the sheath 3. The sealing sleeve 8 is provided with an elastic sealing part 81, which abuts against the inner wall of the wire passage hole.

[0090] Specifically, the elastic sealing part 81 is in close contact with the inner wall of the wire hole to form a reliable dynamic sealing structure, which effectively prevents external pollutants such as moisture, dust, and oil from entering the hub motor, improves the protection level of the hub motor in harsh environments, and ensures the stability of the hub motor operation.

[0091] Furthermore, the elastic sealing part 81 can be a protruding flange on the sealing sleeve 8, the flange size of which is slightly larger than the inner wall of the wire hole, so that the flange can fit tightly with the hole wall of the wire hole, thereby ensuring the sealing performance of the composite cable and the wire hole.

[0092] Furthermore, sealant can be applied to the sealing sleeve 8. Optionally, sealant can be applied between the sealing sleeve 8 and the wire hole, or between the sealing sleeve 8 and the sheath 3. Of course, sealant can also be applied simultaneously between the sealing sleeve 8 and the wire hole, and between the sealing sleeve 8 and the sheath 3. No limitation is made here.

[0093] See Figure 1-7 As shown, this utility model also provides a new energy vehicle, including the aforementioned hub motor.

[0094] Specifically, the new energy vehicle uses the aforementioned hub motor to drive the steering wheel and / or drive wheel. By using the aforementioned hub motor, its cable has a metal shielding layer 4 that wraps around the signal harness 2, which can significantly reduce the impact of external electromagnetic interference on the signal harness 2, and at the same time prevent the internal signal of the cable from interfering with external electromagnetic radiation, thereby improving the safety and stability of the new energy vehicle during use.

[0095] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A cable with shielding function, characterized in that, include: Power supply harness (1); Signal harness (2), the outer surface of which is covered with a metal shielding layer (4); The sheath (3) contains the power supply harness (1), the signal harness (2) and the metal shielding layer (4).

2. A shielded cable according to claim 1, characterized in that, The metal shielding layer (4) is an aluminum film, and a copper wire for grounding is provided inside the aluminum film.

3. A shielded cable according to claim 1, characterized in that, The metal shielding layer (4) is a copper film or a copper mesh.

4. A shielded cable according to claim 1, characterized in that, It also includes a wire harness isolation component (5), which is disposed inside the sheath (3). The wire harness isolation component (5) has multiple branch holes (51), and the power supply wire harness (1) and the signal wire harness (2) are respectively inserted into the branch holes (51) one by one, and the power supply wire harness (1) and the signal wire harness (2) are sealed to their respective corresponding branch holes (51).

5. A shielded cable according to claim 4, characterized in that, It also includes a locking clamp (6), which is sleeved on the wire harness isolation member (5) and the locking clamp (6) is interference-fitted with the wire harness isolation member (5).

6. A shielded cable according to claim 4, characterized in that, The sheath (3) also includes a waterproof sealing sleeve (7), which is located at one end of the sheath (3). The power supply harness (1), the signal harness (2), and the metal shielding layer (4) all pass through the waterproof sealing sleeve (7), and the waterproof sealing sleeve (7) is sealed to the power supply harness (1) and the metal shielding layer (4) respectively. The harness isolation member (5) is located inside the waterproof sealing sleeve (7).

7. A shielded cable according to claim 1, characterized in that, The sheath (3) includes: The wear-resistant layer (31) is made of fluororubber or is made of a blend of EPDM rubber and EVM rubber. A heat-resistant layer (32) is made of silicone rubber; The wear-resistant layer (31) wraps the heat-resistant layer (32), and the heat-resistant layer (32) wraps the power supply harness (1), the signal harness (2), and the metal shielding layer (4).

8. A hub motor, characterized in that, include: A hub motor body, the hub motor body having a motor shaft, the motor shaft having a wire through hole; The shielded cable according to any one of claims 1-7, wherein the cable passes through the cable hole.

9. A hub motor according to claim 8, characterized in that, The cable includes a sealing sleeve (8), which is fitted onto the outer surface of the sheath (3). The sealing sleeve (8) is provided with an elastic sealing part (81), which abuts against the inner wall of the cable hole.

10. A new energy vehicle, characterized in that, Including the hub motor as described in claim 8 or 9.

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