Noise reduction device, high-voltage wiring harness assembly and vehicle

Abstract

The embodiment of the invention provides a noise reduction device, and relates to the technical field of vehicles, the device comprises a shell and a function part; wherein the shell is made of an electromagnetic shielding material, an inner cavity of the shell is used for containing the high-voltage wire, and the high-voltage wire is used for transmitting electric energy in a vehicle; a function part is attached to the inner wall of the inner cavity and used for absorbing force generated by vibration of the high-voltage wire. Based on the device, the shell made of the electromagnetic shielding material is used for containing the high-voltage wire, electromagnetic radiation generated by the high-voltage wire in the electric energy transmission process is effectively shielded, and vibration noise generated when the electromagnetic radiation acts on parts outside the high-voltage wire is restrained. In addition, vibration of the high-voltage wire in the electric energy transmission process is absorbed through the function part, so that vibration of other parts in contact with the high-voltage wire driven by the high-voltage wire is effectively inhibited, and vibration noise of the whole vehicle is further reduced. The embodiment provided by the invention can be applied to intelligent automobiles or new energy automobiles.

Description

[0001] This application is a divisional application. The original application has the application number 202211568636.7 and the original application date is December 8, 2022. The entire contents of the original application are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle technology, and more specifically, to a noise reduction device, a high-voltage wiring harness assembly, and a vehicle. Background Technology

[0003] With the development of new energy technologies, new energy vehicles are becoming more and more popular. However, as the electrification and high voltage of new energy vehicles increase, corresponding problems have also arisen.

[0004] High-voltage wiring harnesses are a crucial part of the energy system in new energy vehicles, primarily responsible for transmitting electrical energy. However, during this transmission, a significant amount of current ripple is generated within the high-voltage wiring harness. This current ripple produces electromagnetic radiation at a certain frequency. This electromagnetic radiation acts on some metal components of the vehicle body, such as the floor panel, door panels, and battery pack cover, generating electrodynamic forces. These metal components vibrate under the influence of these forces, resulting in vibration noise throughout the vehicle and negatively impacting the user's driving experience.

[0005] Therefore, how to reduce the vibration and noise caused to the whole vehicle during the high-voltage power transmission process and improve the user's driving experience is an urgent problem to be solved. Summary of the Invention

[0006] This application provides a high-voltage wiring harness assembly and a vehicle to solve the problem of vibration and noise caused by high-voltage wiring harnesses during power transmission, which reduces the user's driving experience.

[0007] In a first aspect, a noise reduction device is provided, comprising: a housing and a functional part; the housing is made of an electromagnetic shielding material, and the inner cavity of the housing is used to house a high-voltage wire for transmitting electrical energy in a vehicle; the functional part is attached to the inner wall of the inner cavity and is used to absorb the force generated by the vibration of the high-voltage wire itself.

[0008] For example, the shape and size of the aforementioned housing and its inner cavity can be adjusted according to the number and shape of the high-voltage wires to be loaded, so that the shape and size of the housing are consistent with the shape of the high-voltage wires.

[0009] For example, the housing also includes a first port and a second port, the first port being used to introduce the high-voltage wire and the second port being used to lead out the high-voltage wire.

[0010] Based on the above technical solution, a shell made of electromagnetic shielding material is used to house the high-voltage conductor, effectively shielding it from electromagnetic radiation generated during power transmission and suppressing vibration noise caused by electromagnetic radiation acting on components outside the high-voltage conductor. Furthermore, functional components absorb the vibration of the high-voltage conductor itself during power transmission, effectively suppressing the vibration of other components in contact with the high-voltage conductor, further reducing the overall vehicle vibration noise.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned housing includes a detachable first housing and a second housing such that the first housing and the second housing together form an inner cavity.

[0012] For example, the first housing described above may be disposed on top of the second housing described above.

[0013] For example, the first housing can be a cover structure, and the second housing can be a groove structure, thereby ensuring that the high-voltage wire can be housed within the housing. During the installation of the noise reduction device on the high-voltage wire, the high-voltage wire can be first placed within the second housing, and then the first housing can be fastened onto the second housing to complete the installation of the noise reduction device. During the removal of the noise reduction device from the high-voltage wire, the first and second housings can be directly separated to separate the high-voltage wire from the noise reduction device.

[0014] Based on the above technical solution, the housing design that separates the first housing and the second housing facilitates the installation and disassembly of the noise reduction device.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the above-mentioned device further includes: a first fixing member for fixing the first housing to the second housing.

[0016] Based on the above technical solution, it can be ensured that the first and second shells will not separate due to vehicle shaking, forming a relatively stable shielding space, so that the high-voltage wires can be stably stored in the shells, thus improving the stability of the high-voltage wires.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned first fastener includes a buckle and a locking hole, with the buckle disposed in the first housing and the locking hole disposed in the second housing.

[0018] For example, the first housing may be in the shape of a wire harness guide groove, and the card hole may be a card slot hole that matches the first housing.

[0019] For example, the positions of the aforementioned clips and buckles can be interchanged; in addition, the first housing and the second housing can be fixed by means of screw holes and nuts; or the first housing and the second housing can be fixed directly by means of adhesive bonding.

[0020] Based on the above technical solution, it can be ensured that the first and second shells will not separate due to vehicle shaking, forming a relatively stable shielding space, so that the high-voltage wires can be stably stored in the shells, thus improving the stability of the high-voltage wires.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the second housing further includes a support frame and a second fastener, the support frame being disposed on the lower surface of the second housing, and the second fastener being used to fix the support frame to the interior of the vehicle body.

[0022] For example, the noise reduction device described above can be fixed to a body component inside the vehicle.

[0023] For example, the aforementioned support frame may be provided with openings for fixing to body parts by means of cable ties or bolts.

[0024] For example, the aforementioned body parts may be door sheet metal, body chassis, etc.

[0025] For example, if some high-voltage wires are far from other vehicle body components, the electromagnetic interference to these components during power transmission is limited, making it difficult for them to cause vibrations through electrodynamic forces. Therefore, the aforementioned noise reduction device can be installed only on the high-voltage wires closer to the vehicle body components to reduce overall vehicle manufacturing costs.

[0026] For example, the noise reduction device described above may include multiple support frames and a second fastener to further increase the stability of the noise reduction device when installed in a vehicle.

[0027] Based on the above technical solution, the stability of the noise reduction device can be further improved, preventing it from shifting and colliding with other interior components during vehicle movement, thus reducing overall vehicle noise pollution.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned electromagnetic shielding material includes ferromagnetic or conductive materials.

[0029] For example, the aforementioned electromagnetic shielding material can be a ferromagnetic material or a conductive material. Ferromagnetic and conductive materials enable the casing to have good electromagnetic radiation shielding performance, especially against low-frequency electromagnetic radiation that can cause the aforementioned vibration and noise. The ferromagnetic material can be silicon steel, nickel-based alloys, rare earth alloys, etc.; the conductive material can be aluminum, iron, copper, etc.

[0030] For example, the thickness of the shell is determined by the material to which the shell is made. For instance, when the shell is made of a ferromagnetic material, the thickness of the shell can be 0.5 mm; when the shell is made of a conductive material, the thickness of the shell can be 1.5 mm.

[0031] Based on the above technical solution, by selecting a material that suppresses low-frequency electromagnetic radiation that can cause the aforementioned vibration noise as the material of the shell, it is possible to effectively suppress the vibration noise generated by electromagnetic radiation acting on components outside the high-voltage conductor.

[0032] In conjunction with the first aspect, in some implementations of the first aspect, the shape of the aforementioned cavity matches that of the high-voltage conductor.

[0033] Based on the above technical solution, the stability of the high-voltage wires loaded in the housing can be further increased, so that the high-voltage wires will not swing inside the housing or collide with the inner wall of the housing due to vehicle shaking, thus avoiding abnormal noise caused by this.

[0034] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned functional part includes a first functional part and a second functional part, wherein the first functional part is attached to the inner wall of the first housing and the second functional part is attached to the inner wall of the second housing.

[0035] For example, the first functional unit may be disposed between the first housing and the high-voltage wire, and the second functional unit may be disposed between the second housing and the high-voltage wire.

[0036] Based on the above technical solution, by reasonably setting the position of the functional parts, the vibration of the high-voltage conductor itself during the transmission of electrical energy can be effectively absorbed, and the vibration of other parts in contact with the high-voltage conductor can be effectively suppressed, thereby further reducing the vibration noise of the whole vehicle.

[0037] In conjunction with the first aspect, in some implementations of the first aspect, the aforementioned functional part is a damping layer made of damping material.

[0038] For example, the first functional part and the second functional part mentioned above are also damping layers made of damping material. Furthermore, the first functional part and the second functional part mentioned above can be a damping pad, or a layer of other material capable of providing damping.

[0039] Based on the above technical solution, by selecting damping materials, the vibration of the high-voltage conductor itself during the transmission of electrical energy can be effectively absorbed, thereby effectively suppressing the vibration of other components in contact with the high-voltage conductor caused by the high-voltage conductor, and further reducing the vibration noise of the whole vehicle.

[0040] In conjunction with the first aspect, in some implementations of the first aspect, when the high-voltage conductor is installed inside the housing, the functional part deforms.

[0041] For example, the sum of the longitudinal section height h1 of the first functional part, the longitudinal section height h2 of the second functional part, and the longitudinal section height h3 of the high-voltage conductor is equal to the inner height H of the housing.

[0042] Based on the above technical solution, the functional parts can fully contact the high-voltage wire, thereby fully absorbing the vibration force of the high-voltage wire itself, thus suppressing the high-voltage wire from causing other parts in contact with the high-voltage wire to vibrate together, further reducing the vibration noise of the whole vehicle. At the same time, it can further increase the stability of the high-voltage wire installed in the housing, so that the high-voltage wire will not swing inside the housing or collide with the inner wall of the housing due to vehicle shaking, thus avoiding abnormal noise caused by this.

[0043] Secondly, a high-voltage wiring harness assembly is proposed, comprising a high-voltage wiring harness and a noise reduction device in any possible implementation of the first aspect mentioned above.

[0044] Thirdly, a vehicle is proposed that includes a noise reduction device in any of the possible implementations of the first aspect, or a high-voltage wiring harness assembly in any of the possible implementations of the second aspect.

[0045] The beneficial effects of the devices involved in the second and third aspects mentioned above can be referred to the first aspect, and for the sake of brevity, they will not be repeated. Attached Figure Description

[0046] Figure 1 This is a noise reduction device 100 provided in the embodiments of this application.

[0047] Figure 2 This is another noise reduction device 100 provided in the embodiments of this application.

[0048] Figure 3 This is another noise reduction device 100 provided in the embodiments of this application.

[0049] Figure 4 This is another noise reduction device 100 provided in the embodiments of this application.

[0050] Figure 5 This is another noise reduction device 100 provided in the embodiments of this application.

[0051] Figure 5 (a) shows a schematic diagram of a first housing and a second housing secured by snap-fit ​​holes.

[0052] Figure 5 (b) shows another schematic diagram of fixing the first and second housings by means of snap-fit ​​holes.

[0053] Figure 5(c) shows a schematic diagram of a first housing and a second housing secured by screw holes and nuts.

[0054] Figure 5 (d) shows a schematic diagram of fixing the first and second housings by adhesive bonding.

[0055] Figure 6 This is a schematic diagram showing the dimensional relationships of the components of a noise reduction device 100 provided in an embodiment of this application.

[0056] Figure 7 This is another noise reduction device 100 provided in the embodiments of this application.

[0057] Figure 8 This is a schematic diagram of the installation of a noise reduction device 100 provided in an embodiment of this application. Detailed Implementation

[0058] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0059] It should be noted that, in the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in this article is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.

[0060] In the embodiments of this application, the terms "first" and "second" 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more, and "at least one" and "one or more" refer to one, two, or more than two. The singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context explicitly indicates otherwise.

[0061] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0062] In the description of the embodiments of this application, the terms "upper," "lower," "left," "right," "inner," "outer," "vertical," and "horizontal," etc., indicate orientations or positional relationships relative to the indicated placement of components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and not to indicate or imply a specific orientation that the device or component must have, or its construction and operation in a specific orientation. They can change accordingly depending on the orientation of the components in the accompanying drawings, and therefore should not be construed as limiting this application. Furthermore, "vertical" in this application is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0063] In the embodiments of this application, the same reference numerals are used to denote the same component or part. For the same part in the embodiments of this application, only one part or component may be labeled with reference numerals in the figures. It should be understood that the reference numerals also apply to other identical parts or components. In addition, the various parts in the figures are not drawn to scale, and the dimensions and sizes of the parts shown in the figures are only exemplary and should not be construed as limiting this application.

[0064] The noise reduction device provided in this application is used to mount high-voltage wiring harnesses on mobile carriers. The mobile carriers in this application can include road vehicles, water vehicles, air vehicles, industrial equipment, agricultural equipment, or entertainment equipment, etc. For example, the mobile carrier can be a vehicle, which is a vehicle in a broad sense, including transportation vehicles (such as commercial vehicles, passenger cars, motorcycles, flying cars, trains, etc.), industrial vehicles (such as forklifts, trailers, tractors, etc.), engineering vehicles (such as excavators, bulldozers, cranes, etc.), agricultural equipment (such as lawnmowers, harvesters, etc.), amusement equipment, toy vehicles, etc. The embodiments of this application do not specifically limit the type of vehicle. Furthermore, the mobile carrier can be a vehicle such as an airplane or a ship.

[0065] Taking the aforementioned vehicle as an example of a new energy vehicle, the high-voltage battery pack of a new energy vehicle is connected to the drive motor via a high-voltage wiring harness to provide power to the drive motor. Due to the overall vehicle layout, the wiring harness connecting the drive motor and the high-voltage battery pack is usually quite long, requiring cable ties, wiring harness brackets, and other methods to secure the harness to the motor and the vehicle body. During the power supply process from the high-voltage battery pack, power switching transistors are used to regulate the power. Since the switching frequency of these transistors is typically around 20kHz, the switching process generates a large amount of current ripple in the high-voltage wiring harness. Based on the principle of electromagnetic induction, some metal components within the vehicle body, especially thin-plate metal components, will vibrate under the electrodynamic force generated by electromagnetic forces, resulting in vibration noise that significantly impacts the user's driving experience.

[0066] Furthermore, the aforementioned severe vibration and noise issues also exist in the charging scenario for new energy vehicles. Currently, the charging voltage for new energy vehicles is as high as 800V, but considering that most charging stations currently operate at 400V, compatibility with 400V charging stations is necessary. Therefore, during the charging process, the power switch of the motor controller is used to boost the voltage, resulting in a large amount of current ripple in the high-voltage wiring harness. Especially in this scenario, where the vehicle is stationary, the vibration and noise caused by the current ripple are even more pronounced, severely impacting the user's driving experience.

[0067] While a shielding layer can be added to high-voltage wiring harnesses, this shielding is typically used to prevent electromagnetic interference from the high-voltage harness into the vehicle, thereby improving the vehicle's electromagnetic compatibility. However, the electromagnetic waves shielded by the wiring harness shielding layer are mostly ultra-high frequency electromagnetic waves. The vibration and noise issues that cause these problems in the vehicle are usually not caused by ultra-high frequency electromagnetic waves. Therefore, even if a shielding layer is added to the high-voltage wiring harness, it cannot completely prevent the vibration and noise pollution from affecting the vehicle.

[0068] In addition, during the transmission of electrical energy by the high-voltage wiring harness, the high-voltage wiring harness is also affected by high-amplitude current harmonics, which causes the high-voltage wiring harness itself to generate high-frequency vibrations, and drives other components in contact with the high-voltage wiring harness to vibrate together, further increasing the vibration noise of the whole vehicle.

[0069] In view of this, this application proposes a noise reduction device that suppresses the electromagnetic radiation diffusion caused by current ripple and suppresses vibration noise generated in other components due to the high-frequency vibration of the high-voltage wiring harness itself. When applied to new energy vehicles, it can effectively reduce overall vehicle vibration noise and improve the user's driving experience.

[0070] Figure 1 An example of a noise reduction device 100 according to an embodiment of this application is shown.

[0071] In some possible embodiments, the noise reduction device 100 proposed in this application can be used to load high-voltage wires of new energy vehicles.

[0072] refer to Figure 1 As shown, the noise reduction device 100 may include a housing 110 and a functional part 120. The housing 110 is made of electromagnetic shielding material, and its inner cavity is used to house a high-voltage wire for transmitting electrical energy in the vehicle. The functional part 120 is attached to the inner wall of the inner cavity and is used to absorb the force generated by the vibration of the high-voltage wire itself.

[0073] In some possible embodiments, when there are multiple high-voltage conductors, these multiple high-voltage conductors can be referred to as a high-voltage harness.

[0074] In some possible embodiments, the electromagnetic shielding material can be a ferromagnetic material or a conductive material. Ferromagnetic and conductive materials enable the housing 110 to have good electromagnetic radiation shielding performance, especially against low-frequency electromagnetic radiation that can cause the aforementioned vibration noise. The ferromagnetic material can be silicon steel, nickel-based alloys, rare earth alloys, etc.; the conductive material can be aluminum, iron, copper, etc.

[0075] In some possible embodiments, the thickness of the housing 110 is determined according to the material to which the housing is made. For example, when the housing 110 is made of a ferromagnetic material, the thickness of the housing 110 may be 0.5 mm; when the housing 110 is made of a conductive material, the thickness of the housing 110 may be 1.5 mm.

[0076] Based on the above technical solution, the high-voltage conductor is housed in a shell 110 made of electromagnetic shielding material, effectively shielding the electromagnetic radiation generated by the high-voltage conductor during power transmission and suppressing vibration noise caused by electromagnetic radiation acting on components outside the high-voltage conductor. Furthermore, the functional unit 120 absorbs the vibration of the high-voltage conductor itself during power transmission, thereby effectively suppressing the vibration of other components in contact with the high-voltage conductor, further reducing the overall vehicle vibration noise.

[0077] Figure 2 This application illustrates yet another noise reduction device 100 proposed in an embodiment of the present application.

[0078] In some possible embodiments, the housing 110 can be adjusted according to the number and shape of the high-voltage wires to be loaded, so that the shape of the housing 110 is consistent with the shape of the high-voltage wires.

[0079] Based on the above technical solution, the high-voltage wires can be installed more securely in the noise reduction device, preventing the high-voltage wires from swinging and colliding within the noise reduction device 100 due to external factors, thus preventing abnormal noises. This further reduces the noise pollution of the entire vehicle.

[0080] Figure 3 This application illustrates yet another noise reduction device 100 proposed in an embodiment of the present application.

[0081] In some possible embodiments, the housing 110 includes a first port and a second port, wherein the first port is used to introduce the high-voltage wire and the second port is used to lead out the high-voltage wire.

[0082] In some possible embodiments, the housing 110 may be a one-piece structure or may be composed of at least two parts. When the housing 110 is a one-piece structure, the noise reduction device 100 can form a high-voltage wiring harness assembly with the high-voltage conductor; however, this presents difficulties in installing or disassembling and replacing the device. Therefore, this application proposes yet another noise reduction device 100.

[0083] Figure 4 This application illustrates yet another noise reduction device 100 proposed in an embodiment of the present application.

[0084] refer to Figure 4 As shown, the housing 110 of the noise reduction device 100 may include a detachable first housing 111 and a second housing 112, which together form the inner cavity of the housing 110.

[0085] The first housing 111 can be a cover plate structure, and the second housing 112 can be a groove structure, thereby ensuring that the high-voltage wire can be housed within the housing 110. During the installation of the noise reduction device 100 on the high-voltage wire, the high-voltage wire can first be placed within the second housing 112, and then the first housing 111 can be fastened onto the second housing 112 to complete the installation of the noise reduction device 100. During the removal of the noise reduction device 100 from the high-voltage wire, the first housing 111 and the second housing 112 can be directly separated to detach the high-voltage wire from the noise reduction device 100.

[0086] Based on the above technical solution, the housing design with the first housing 111 and the second housing 112 separated facilitates the installation and disassembly of the noise reduction device 100.

[0087] In some possible embodiments, the internal shape of the first housing 111 is in the shape of a guide groove so that the internal shape of the first housing 111 matches the shape of the high-voltage conductor.

[0088] Therefore, during the manufacturing process of the noise reduction device 100, the shape and size of the first housing 111 can be adjusted according to the size and arrangement of the high-voltage wires. Typically, the first housing 111 takes the shape of a wire harness guide groove.

[0089] Based on the above technical solution, the first housing 111 can guide and fix the high-voltage wire, preventing the high-voltage wire from moving around in the noise reduction device 100 and causing collisions that produce abnormal noises.

[0090] Figure 5 A schematic diagram of another noise reduction device 100 according to an embodiment of this application is shown. Wherein, Figure 5 (a) and Figure 5 (b) shows a schematic diagram of a method for fixing the first housing and the second housing by means of a snap-fit ​​hole; Figure 5 (c) shows a schematic diagram of a first housing and a second housing secured by screw holes and nuts; Figure 5 (d) shows a schematic diagram of fixing the first and second housings by adhesive bonding.

[0091] In some possible embodiments, the noise reduction device 100 further includes a first fixing member 140 for fixing the first housing 111 and the second housing 112.

[0092] In some possible embodiments, reference Figure 5 As shown in (a), the first fastener 140 may include a buckle 141 and a locking hole 142. The buckle 141 is disposed on the first housing 111, and the locking hole 142 is disposed on the second housing 112. After the buckle 141 is inserted into the locking hole 142, it is snapped and fixed to fix the first housing 111 and the second housing 112 together.

[0093] In some possible embodiments, since the housing 110 can be in the shape of a wire harness guide groove, the aforementioned card hole 142 can be a card slot hole.

[0094] In some possible embodiments, the first housing 111 and the second housing 112 described above can also be fixed together in other ways, for example, referring to Figure 5 As shown in (b), the positions of the aforementioned card hole 142 and buckle 141 can be interchanged, and then the buckle 141 can be inserted into the card hole 142 for locking and fixing, so as to fix the first housing 111 and the second housing 112 together; or, refer to Figure 5 As shown in (c), the first housing 111 and the second housing 112 are fixed by screw holes and nuts; or, refer to Figure 5As shown in (d) in the figure, the first housing 111 and the second housing 112 are directly fixed together by adhesive bonding. 143 in the figure indicates the location of the adhesive bonding point.

[0095] Based on the above technical solution, it can be ensured that the first housing 111 and the second housing 112 will not separate due to vehicle shaking, forming a relatively stable shielding space, so that the high-voltage wire can be stably stored in the housing 110, thereby improving the stability of the high-voltage wire.

[0096] In some possible embodiments, the functional part 120 includes a first functional part 121 and a second functional part 122, wherein the first functional part 121 is attached to the inner wall of the first housing 111 and the second functional part 122 is attached to the inner wall of the second housing 112.

[0097] In some possible embodiments, the first functional part 121 is disposed between the first housing 111 and the high-voltage wire, and the second functional part 122 is disposed between the second housing 112 and the high-voltage wire.

[0098] In some possible embodiments, the functional part 120 described above may be a damping layer made of damping material. Further, the first functional part 121 and the second functional part 122 may also be damping layers made of damping material. Even further, the first functional part 121 and the second functional part 122 may be a damping pad, or a layer of other material capable of providing damping.

[0099] In some possible embodiments, when the damping pads of the first functional unit 121 and the second functional unit 122 are used, the functional unit 120 is specifically configured as follows: refer to Figure 5 As shown in (d), since the sidewall of the high-voltage conductor approaches the inner wall of the side plate of the second housing 112, the first functional part 121 and the second functional part 122 can cover the inner wall of the side plate of the second housing 112.

[0100] refer to Figure 5 (a) in the middle, or Figure 5 (b) in the middle, or Figure 5 As shown in (c), since there is a certain distance between the side wall of the high-voltage conductor and the inner wall of the side plate of the second housing 112, and the first housing 111 with the guide groove shape plays a role in fixing the high-voltage conductor, the first functional part 121 is only provided on the lower end face of the first housing 111, and the second functional part 122 is only provided on the inner bottom surface of the second housing 112.

[0101] Alternatively, to reduce material consumption of the functional part 120, the functional part 120 can be provided at the contact point between the high-voltage wire and the housing 110. This would reduce the manufacturing cost of the noise reduction device 100.

[0102] Based on the above technical solution, by reasonably setting the position of the functional part 120, the vibration of the high-voltage conductor itself during the transmission of electrical energy can be effectively absorbed, and the vibration of other parts in contact with the high-voltage conductor can be effectively suppressed, thereby further reducing the vibration noise of the whole vehicle.

[0103] In some possible embodiments, the functional part 120 deforms when the high-voltage conductor is installed inside the housing 110. Alternatively, the functional part 120 and the high-voltage conductor are in close contact.

[0104] Figure 6 A schematic diagram showing the dimensional relationships of the components of a noise reduction device 100 according to an embodiment of this application is shown.

[0105] refer to Figure 6 As shown, the height relationship of the various components of the noise reduction device 100 can be: .

[0106] Wherein, H is the inner height of the housing 110, h1 is the longitudinal section height of the first functional part 121, h2 is the longitudinal section height of the second functional part 122, and h3 is the longitudinal section height of the high-voltage conductor.

[0107] refer to Figure 6 As shown, the width relationship of each component of the noise reduction device 100 can be: .

[0108] Wherein, W is the inner width of the housing 110, w1 is the cross-sectional width of the second functional part 122 on the left side wall of the inner cavity of the housing 110, w2 is the cross-sectional width of the second functional part 122 on the right side wall of the inner cavity of the housing 110, w3 is the cross-sectional width of the high-voltage wire, and w4 is the gap between the high-voltage wires. N The number of high-voltage wires loaded for the noise reduction device 100.

[0109] In some possible embodiments, reference Figure 5 As shown in (a), there is a certain distance between the sidewall of the high-voltage conductor and the inner wall of the side plate of the second housing 112. Therefore, the width relationship of each component of the noise reduction device 100 can be: Therefore, to ensure tight contact between the functional unit 120 and the high-voltage conductor, the noise reduction device 100 with this structural form only needs to ensure that the height relationship of each component of the noise reduction device 100 meets the above requirements. That's all.

[0110] Based on the above technical solution, the functional part 120 can fully contact the high-voltage wire, thereby fully absorbing the vibration force of the high-voltage wire itself, thus suppressing the high-voltage wire from causing other parts in contact with the high-voltage wire to vibrate together, further reducing the vibration noise of the whole vehicle, and further fixing the high-voltage wire to prevent it from shaking and colliding in the above-mentioned cavity, causing abnormal noise.

[0111] Figure 7 A schematic diagram of another noise reduction device 100 proposed in an embodiment of this application is shown.

[0112] In some possible embodiments, when the noise reduction device 100 is applied in a vehicle, the second housing 112 further includes a support frame 150 and a second fastener 160, wherein the support frame 150 is disposed on the outer bottom surface of the second housing 112, and the second fastener 160 is used to fix the support frame 150 to the vehicle body component 170.

[0113] In some possible embodiments, the support frame 150 may be provided with openings for fixing to the body component 170 by means of cable ties or bolts.

[0114] In some possible embodiments, the aforementioned body component 170 may be a door sheet metal, a body chassis, etc.

[0115] Based on the above technical solution, the stability of the noise reduction device 100 can be further improved, preventing the noise reduction device 100 from shifting and colliding with other interior components during vehicle movement, thus generating collision noise. This further reduces the overall noise pollution of the vehicle.

[0116] In some possible embodiments, if the high-voltage conductors are far from other vehicle body components, the electromagnetic interference to other vehicle body components during the transmission of electrical energy by these high-voltage conductors is limited, and it is difficult for them to cause vibration of other vehicle body components through the generated electrodynamic force. Therefore, the aforementioned noise reduction device 100 can be installed only on the high-voltage conductors that are close to the vehicle body components.

[0117] In some possible embodiments, the noise reduction device 100 may include a plurality of support frames 150 and a second fastener 160 to further increase the stability of the noise reduction device 100 when installed in a vehicle.

[0118] Figure 8 A schematic diagram of the installation of a noise reduction device 100 according to an embodiment of this application is shown.

[0119] Taking a relatively thin vehicle floor plate 180 as an example, beneath the vehicle floor plate 180 is a chassis assembly 171 housing the battery pack. High-voltage wires exist between the vehicle floor plate 180 and the chassis assembly 171, supplying electrical energy to the drive motor 190. In this scenario, the aforementioned noise reduction device 100 can be installed only on the high-voltage wires that are a first distance L from the vehicle floor plate 180. This first distance L can be determined in advance through experiments, for example, 10 cm. When the distance between the high-voltage wires and the vehicle floor plate 180 is greater than the first distance L, the electrodynamic force generated during the transmission of electrical energy by the high-voltage wires will not cause vibration to the vehicle floor plate 180.

[0120] Based on the above technical solution, the noise reduction equipment is only installed on the high-voltage wires that will cause vibration to other body parts. This reduces the vibration and noise pollution of the whole vehicle while controlling the cost of vehicle manufacturing.

[0121] This application also provides a high-voltage wiring harness assembly, including a high-voltage conductor and any of the noise reduction devices 100 provided in the above embodiments, wherein the noise reduction device 100 is loaded with the high-voltage conductor.

[0122] This application also provides a vehicle that includes any of the noise reduction devices 100 provided in the above embodiments, or includes the high-voltage wiring harness assembly described above.

[0123] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A noise reduction device, characterized by, The device comprises: a shell (110) and a functional part (120); the shell (110) comprises a first shell made of electromagnetic shielding material, the shell (110) is used to accommodate high-voltage wires, the shell comprises a shape matching the high-voltage wires; the functional part (120) is made of damping material, the functional part (120) is used to absorb the force generated by the vibration of the high-voltage wires themselves.

2. The noise reducing device of claim 1, wherein, The shell (110) comprises a detachable first shell (111) and a second shell (112).

3. The noise reducing device of claim 2, wherein, The device further comprises: a first fixing part (140), the first fixing part (140) is used to fix the first shell (111) and the second shell (112).

4. The noise reducing device of claim 3, wherein, The first fixing part (140) comprises a buckle (141) and a card hole (142), the buckle (141) is arranged on the first shell (111), and the card hole (142) is arranged on the second shell (112); or, the buckle (141) is arranged on the second shell (112), and the card hole (142) is arranged on the first shell (111).

5. The noise reducing device of any one of claims 2 to 4, wherein, The second shell (112) further comprises a support frame (150) and a second fixing part (160), the support frame (150) is arranged on the lower surface of the second shell (112), and the second fixing part (160) is used to fix the support frame (150) inside the vehicle body of the vehicle.

6. The noise reducing device of any one of claims 1 to 5, wherein, The electromagnetic shielding material comprises ferromagnetic material or conductive material.

7. The noise reducing device of any one of claims 2 to 6, wherein, The functional part (120) comprises a first functional part (121) and a second functional part (122), the first functional part (121) is attached to the inner wall of the first shell (111), and the second functional part (122) is attached to the inner wall of the second shell (112).

8. The noise reducing device of any one of claims 1 to 7, wherein, The functional part (120) is a damping layer made of damping material.

9. The noise reducing device of any one of claims 1 to 8, wherein, When the high-voltage wires are loaded in the shell (110), the functional part (120) is deformed.

10. A high voltage wiring harness assembly characterized by, The device comprises high-voltage wires and the noise reduction device according to any one of claims 1 to 9, wherein the noise reduction device is loaded with the high-voltage wires.

11. The high-voltage wire harness assembly of claim 10, wherein, The functional part (120) comprises a first functional part (121) and a second functional part (122), the shell (110) comprises a detachable first shell (111) and a second shell (112), the first functional part is arranged between the first shell and the high-voltage wires, and the second functional part is arranged between the second shell and the high-voltage wires.

12. The high-voltage wiring harness assembly of claim 10 or 11, wherein, The sum of the longitudinal section height h1 of the first functional part, the longitudinal section height h2 of the second functional part, and the longitudinal section height h3 of the high-voltage wires is equal to the inner height H of the shell.

13. A vehicle characterized by comprising: The device comprises the noise reduction device according to any one of claims 1 to 9, or the high-voltage wire harness assembly according to any one of claims 10 to 12.

Images