CN118175822A

CN118175822A - Noise reduction device, high-voltage wire harness assembly and vehicle

Info

Publication number: CN118175822A
Application number: CN202211568636.7A
Authority: CN
Inventors: 方源
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2024-06-11
Also published as: WO2024120368A1

Abstract

The embodiment of the application provides a noise reduction device, which relates to the technical field of vehicles, and comprises the following components: a housing and a functional part; the shell is made of electromagnetic shielding materials, the inner cavity of the shell is used for accommodating high-voltage wires, and the high-voltage wires are used for transmitting electric energy in a vehicle; the inner wall of the inner cavity is attached with a functional part, and the functional part is used for absorbing the force generated by the vibration of the high-voltage wire. Based on the device, the high-voltage wire is accommodated by the shell made of the electromagnetic shielding material, so that electromagnetic radiation generated in the electric energy transmission process of the high-voltage wire is effectively shielded, and vibration noise generated by the electromagnetic radiation acting on parts outside the high-voltage wire is restrained. In addition, the function part is used for absorbing self vibration of the high-voltage wire in the process of transmitting electric energy, so that vibration of other parts contacted with the high-voltage wire due to the driving of the high-voltage wire is effectively restrained, and vibration noise of the whole vehicle is further reduced. The embodiment provided by the application can be applied to intelligent automobiles or new energy automobiles.

Description

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

Technical Field

The present application relates to the field of vehicle technology, and more particularly, to a noise reduction device, a high voltage harness assembly, and a vehicle.

Background

With the development of new energy technology, new energy automobiles are becoming more and more popular, but with the deepening of the electric and high-voltage degrees of new energy automobiles, corresponding problems are brought.

The high-voltage wire harness is used as an important part of an energy system of the new energy automobile and is mainly responsible for electric energy transmission. However, in the process of electric energy transmission, a large amount of current ripples are generated in the high-voltage wire harness, and electromagnetic radiation with a certain frequency is generated by the current ripples, and acts on some metal parts of the automobile body, such as an automobile body bottom plate, a door plate, a battery pack cover plate and the like, so that electric force is generated, and the metal parts vibrate under the action of the electric force, so that the whole automobile generates vibration noise, and the driving experience of a user is affected.

Therefore, how to reduce vibration noise caused by the whole vehicle in the high-voltage wire harness transmission process and improve the driving experience of users is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a high-voltage wire harness assembly and a vehicle, which are used for solving the problems of vibration noise caused to the whole vehicle and reduction of user driving experience in the high-voltage wire harness transmission process.

In a first aspect, there is provided a noise reduction device comprising: a housing and a functional part; the shell is made of electromagnetic shielding materials, the inner cavity of the shell is used for accommodating high-voltage wires, and the high-voltage wires are used for transmitting electric energy in the vehicle; the inner wall of the inner cavity is attached with a functional part, and the functional part is used for absorbing the force generated by the vibration of the high-voltage wire.

For example, the shape and size of the housing and the inner cavity thereof 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 those of the high-voltage wires.

Illustratively, the housing further includes a first port for introducing the high voltage wire and a second port for withdrawing the high voltage wire.

Based on the technical scheme, the high-voltage wire is accommodated in the shell made of the electromagnetic shielding material, so that electromagnetic radiation generated in the electric energy transmission process of the high-voltage wire is effectively shielded, and vibration noise generated by the electromagnetic radiation acting on parts outside the high-voltage wire is restrained. In addition, the function part is used for absorbing self vibration of the high-voltage wire in the process of transmitting electric energy, so that vibration of other parts contacted with the high-voltage wire due to the driving of the high-voltage wire is effectively restrained, and vibration noise of the whole vehicle is further reduced.

With reference to the first aspect, in certain implementations of the first aspect, the housing includes a first housing and a second housing that are detachable such that the first housing and the second housing together form an interior cavity.

For example, the first housing may be disposed above the second housing.

For example, the first housing may be a cover plate structure, and the second housing may be a groove structure, so as to ensure that the high-voltage wire can be accommodated in the housing. In the process of installing the noise reduction device on the high-voltage wire, the high-voltage wire can be firstly loaded in the second shell, and then the first shell is buckled on the second shell, so that the installation of the noise reduction device can be completed. In the process of detaching the noise reduction device from the high-voltage wire, the first shell and the second shell are directly separated, and the high-voltage wire can be separated from the noise reduction device.

Based on the technical scheme, the installation and the disassembly of the noise reduction device are facilitated through the shell design that the first shell and the second shell are separated.

With reference to the first aspect, in certain implementation manners of the first aspect, the apparatus further includes: the first fixing piece is used for fixing the first shell and the second shell.

Based on above-mentioned technical scheme, can guarantee that first casing and second casing can not rock and separate because of the vehicle, form comparatively stable shielding space, make high voltage wire stably accomodate in the casing, promoted high voltage wire's stability.

With reference to the first aspect, in certain implementation manners of the first aspect, the first fixing piece includes a buckle and a clamping hole, the buckle is disposed on the first housing, and the clamping hole is disposed on the second housing.

The first housing may be in the shape of a wire harness guide slot, and the clamping hole may be a clamping slot hole, which is matched with the first housing.

Illustratively, the above-described snap holes and snap locations may be reversed; in addition, the first shell and the second shell can be fixed through screw holes and nuts; the first casing and the second casing may be directly fixed by adhesion.

With reference to the first aspect, in some implementations of the first aspect, the second housing further includes a support frame and a second fixing member, where the support frame is disposed on a lower surface of the second housing, and the second fixing member is used to fix the support frame to an interior of a body of the vehicle.

For example, the noise reduction device described above may be fixed to a body member of the vehicle interior.

For example, the support bracket may be provided with openings for securing with the body component in the form of ties or bolts.

The above-described vehicle body component may be, for example, a door sheet metal, a vehicle body chassis, or the like.

For example, if the distance between a part of the high-voltage wire and other vehicle body components is far, electromagnetic interference on other vehicle body components in the process of transmitting electric energy by the part of the high-voltage wire is limited, and vibration of other vehicle body components is difficult to be caused by formed electrodynamic force. Therefore, the noise reduction device can be additionally arranged on the high-voltage wire which is closer to the vehicle body part, so that the manufacturing cost of the whole vehicle is reduced.

For example, the noise reduction device may include a plurality of supporting frames and a second fixing member therein to further increase the stability of the noise reduction device installed in the vehicle.

Based on the technical scheme, the stability of the noise reduction device can be further improved, and the phenomenon that the noise reduction device is moved in the shaking process of a vehicle to collide with other parts in the vehicle to generate collision noise is avoided. Thereby further reducing the noise pollution of the whole vehicle.

With reference to the first aspect, in certain implementations of the first aspect, the electromagnetic shielding material includes a ferromagnetic material or a conductive material.

The electromagnetic shielding material may be, for example, a ferromagnetic material or an electrically conductive material, based on which the housing is provided with good electromagnetic radiation shielding properties, in particular low frequency electromagnetic radiation, which is capable of causing the above mentioned vibration noise. The ferromagnetic material can be silicon steel material, nickel base alloy, rare earth alloy, etc.; the conductive material may be aluminum, iron, copper, or the like.

The thickness of the above-described case is determined by a case-made material, for example, when the above-described case is made of a ferromagnetic material, the thickness of the case may be 0.5mm; when the above-described case is made of a conductive material, the thickness of the case may be 1.5mm.

Based on the technical scheme, the material for suppressing the low-frequency electromagnetic radiation capable of inducing the vibration noise is selected as the material of the shell, so that the vibration noise generated by the electromagnetic radiation acting on the parts except the high-voltage wire can be effectively suppressed.

With reference to the first aspect, in certain implementations of the first aspect, the shape of the inner cavity is matched to the high-voltage wire.

Based on the technical scheme, the stability of the high-voltage wire loaded in the shell can be further increased, so that the high-voltage wire cannot swing inside the shell or collide with the inner wall of the shell due to shaking of a vehicle, and abnormal sound caused by the swing of the high-voltage wire is avoided.

With reference to the first aspect, in some implementations of the first aspect, the functional portion includes a first functional portion attached to an inner wall of the first housing and a second functional portion attached to an inner wall of the second housing.

For example, the first functional portion may be disposed between the first housing and the high-voltage wire, and the second functional portion may be disposed between the second housing and the high-voltage wire.

Based on the technical scheme, through the position of reasonable setting functional part, effectively absorb high-voltage wire self vibration at transmission electric energy in-process, can effectively restrain to vibrate together with other parts of high-voltage wire contact because of high-voltage wire drive, further reduced the vibration noise of whole car.

With reference to the first aspect, in certain implementations of the first aspect, the functional portion is a damping layer made of a damping material.

The first and second functional parts of the pallet are also, for example, damping layers made of damping material. The first functional portion and the second functional portion may be a damping pad or may be a layer of another material capable of playing a damping role.

Based on the technical scheme, through selecting damping material, can effectively absorb high-voltage wire self vibration in the transmission electric energy in-process to effectively restrain and vibrate together because of high-voltage wire drives other parts that contact with high-voltage wire, further reduced the vibration noise of whole car.

With reference to the first aspect, in some implementations of the first aspect, the functional portion is deformed when the high-voltage wire is loaded in the housing.

Illustratively, the sum of the longitudinal section height H1 of the first functional portion and the longitudinal section height H2 of the second functional portion and the longitudinal section height H3 of the high-voltage wire is equal to the inner height H of the housing.

Based on the technical scheme, the functional part can be fully contacted with the high-voltage wire, so that the vibration force of the high-voltage wire can be fully absorbed, the high-voltage wire can be further restrained from driving other parts contacted with the high-voltage wire to vibrate together, the vibration noise of the whole vehicle is further reduced, meanwhile, the stability of the high-voltage wire loaded in the shell can be further increased, the high-voltage wire cannot swing inside the shell or collide with the inner wall of the shell due to shaking of the vehicle, and abnormal sound caused by the vibration noise is avoided.

In a second aspect, a high voltage harness assembly is provided, comprising a high voltage harness and a noise reduction device in any one of the possible implementations of the first aspect.

In a third aspect, a vehicle is presented comprising a noise reduction device in any one of the possible implementations of the first aspect or a high voltage harness assembly in any one of the possible implementations of the second aspect.

The advantages of the apparatus according to the second and third aspects may refer to the first aspect, and are not repeated for brevity.

Drawings

Fig. 1 is a schematic diagram of a noise reduction device 100 according to an embodiment of the present application.

Fig. 2 is a schematic diagram of another noise reduction device 100 according to an embodiment of the present application.

Fig. 3 is a schematic diagram of another noise reduction device 100 according to an embodiment of the present application.

Fig. 4 is a schematic diagram of another noise reduction device 100 according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another noise reduction device 100 according to an embodiment of the present application.

Fig. 5 (a) shows a schematic view of fixing the first housing and the second housing by snap-fit holes.

Fig. 5 (b) shows a schematic view of yet another method of fixing the first housing and the second housing by snap-fitting holes.

Fig. 5 (c) shows a schematic view of fixing the first housing and the second housing by screw holes and nuts.

Fig. 5 (d) shows a schematic view of fixing the first housing and the second housing by bonding.

Fig. 6 is a schematic diagram of the dimensional relationships of the components of the noise reduction device 100 according to the embodiment of the present application.

Fig. 7 is a schematic diagram of another noise reduction device 100 according to an embodiment of the present application.

Fig. 8 is an additional schematic diagram of a noise reduction device 100 according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone.

In embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In addition, in the description of the embodiments of the present application, "plurality" means two or more, and "at least one" and "one or more" mean one, two or more. The singular expressions "a," "an," "the," and "such" are intended to include, for example, also "one or more" such expressions, unless the context clearly indicates to the contrary.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In the description of embodiments of the present application, the terms "upper," "lower," "left," "right," "inner," "outer," "vertical," "horizontal," and the like are used for defining an orientation or position relative to the orientation or position in which components are schematically depicted in the drawings, and it should be understood that these directional terms are relative terms used for describing and clarifying the description relative to each other, rather than indicating or implying that the apparatus or component being referred to must have a particular orientation, or be constructed and operated in a particular orientation, which may vary accordingly with respect to the orientation in which components are depicted in the drawings and therefore should not be construed as limiting the present application. Furthermore, the term "vertical" referred to in the present application is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

In the embodiment of the present application, the same reference numerals are used to denote the same components or the same parts, and for the same parts in the embodiment of the present application, reference numerals may be used to denote only one of the parts or the parts in the drawings, and it should be understood that the reference numerals are equally applicable to other same parts or parts. In addition, the various components in the drawings are not to scale, and the dimensions and sizes of the components shown in the drawings are merely illustrative and should not be construed as limiting the application.

The noise reduction device is used for loading the high-voltage wire harness of the mobile carrier, and the mobile carrier can comprise an on-road vehicle, a water vehicle, an air vehicle, industrial equipment, agricultural equipment, entertainment equipment or the like. For example, the mobile carrier may be a vehicle, which is a vehicle in a broad concept, may be a vehicle (e.g., commercial vehicle, passenger vehicle, motorcycle, aerocar, train, etc.), an industrial vehicle (e.g., forklift, trailer, tractor, etc.), an engineering vehicle (e.g., excavator, earth mover, crane, etc.), an agricultural device (e.g., mower, harvester, etc.), an amusement device, a toy vehicle, etc., and the type of the vehicle according to the embodiments of the present application is not particularly limited. For another example, the mobile carrier may be an aircraft, or a ship.

Taking the vehicle as a new energy automobile as an example, the high-voltage battery pack of the new energy automobile is connected with the driving motor through a high-voltage wire harness to provide electric energy for the driving motor. Because whole car arrangement's reason, the connection pencil between driving motor and the high-voltage battery package is longer generally, needs to fix the pencil on the automobile body of motor and whole car through modes such as ribbon, pencil support. Since power is required to be regulated by using a power switching tube during the power supply of the high-voltage battery pack, the switching frequency of the power switching tube is usually 20kHz, and a large amount of current ripple is generated in the high-voltage wire harness during the switching process. Based on the electromagnetic induction principle, some metal parts in the automobile body, especially some metal parts with thin plate structures, can vibrate in relation to the switching frequency of the power switch tube under the action of electric force generated by electromagnetism, so that vibration noise is generated, and the driving experience of a user is seriously affected.

In addition, in the case of charging a new energy vehicle, the problem of the above-described serious vibration noise is also present. The charging voltage of the new energy automobile at the present stage is up to 800V, but considering that the charging voltage of most charging piles at the present stage is 400V, the charging piles with the charging voltage of 400V are required to be adapted. Therefore, in the charging process of the new energy automobile, the power switch to the motor controller is utilized to boost, so that a large amount of current ripple is generated in the high-voltage wire harness. Particularly, in the scene, the vehicle is in a static state, and vibration noise of the whole vehicle caused by current ripple is more obvious, so that the driving experience of a user is seriously affected.

Although a wire harness shielding layer can be added to the high-voltage wire harness, the wire harness shielding layer is generally used for avoiding electromagnetic interference of the high-voltage wire harness to the whole vehicle so as to improve electromagnetic compatibility of the whole vehicle. The electromagnetic wave shielded by the wire harness shielding layer is ultrahigh frequency electromagnetic wave, so that the vibration noise of the whole vehicle is caused, and the vibration noise pollution of the whole vehicle cannot be avoided even if the wire harness shielding layer is added in the high-voltage wire harness.

In addition, in the process of transmitting electric energy by the high-voltage wire harness, the high-voltage wire harness can also be subjected to the action of high-amplitude current harmonic waves, so that the high-voltage wire harness can generate high-frequency vibration, and other parts contacted with the high-voltage wire harness are driven to vibrate together, so that the vibration noise of the whole vehicle is further increased.

In view of this, an embodiment of the present application proposes a noise reduction device that suppresses electromagnetic radiation diffusion caused by current ripple and suppresses vibration noise generated by other components due to high-frequency vibration of a high-voltage wire harness itself. The novel energy automobile vibration noise reduction device is applied to the novel energy automobile, can effectively reduce the vibration noise of the whole automobile, and improves the driving experience of a user.

Fig. 1 shows a noise reduction device 100 according to an embodiment of the present application.

In some possible embodiments, the noise reduction device 100 according to the embodiments of the present application may be used for loading high-voltage wires of a new energy automobile.

Referring to fig. 1, the noise reduction device 100 may include a housing 110 and a functional part 120, wherein the housing 110 is made of an electromagnetic shielding material, and an inner cavity of the housing 110 is used for accommodating a high voltage wire for transmitting electric energy in a vehicle. The functional part 120 is attached to the inner wall of the inner cavity, and the functional part 120 is used for absorbing the force generated by the vibration of the high-voltage wire itself.

In some possible embodiments, when the high voltage wire is plural, the plural high voltage wires may be referred to as a high voltage wire harness.

In some possible embodiments, the electromagnetic shielding material may be a ferromagnetic material or an electrically conductive material, which is based on the ferromagnetic material and the electrically conductive material, and may enable the housing 110 to have good electromagnetic radiation shielding performance, especially for low frequency electromagnetic radiation that may cause the vibration noise. The ferromagnetic material can be silicon steel material, nickel base alloy, rare earth alloy, etc.; the conductive material may be aluminum, iron, copper, or the like.

In some possible embodiments, the thickness of the housing 100 is determined according to the housing manufacturing material, for example, when the housing 100 is made of a ferromagnetic material, the thickness of the housing 100 may be 0.5mm; when the housing 100 is made of a conductive material, the thickness of the housing 100 may be 1.5mm.

Based on the above technical solution, the housing 110 made of the electromagnetic shielding material accommodates the high-voltage wire, so as to effectively shield electromagnetic radiation generated by the high-voltage wire in the process of transmitting electric energy, and inhibit vibration noise generated by the electromagnetic radiation acting on components outside the high-voltage wire. In addition, the function part 120 absorbs the self vibration of the high-voltage wire in the process of transmitting electric energy, so that the vibration of other parts contacted with the high-voltage wire due to the driving of the high-voltage wire is effectively restrained, and the vibration noise of the whole vehicle is further reduced.

Fig. 2 shows yet another noise reduction device 100 according to an embodiment of the present application.

In some possible embodiments, the housing 110 may 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.

Based on the above technical scheme, can make the high-voltage wire install more firmly in noise reduction device, prevent noise reduction device 100 because of the outside cause causes to rock and makes, leads to the high-voltage wire to swing in noise reduction device 100, bumps, and then sends abnormal sound. Thereby further reducing noise pollution of the whole vehicle.

Fig. 3 shows yet another noise reduction device 100 according to an embodiment of the present application.

In some possible embodiments, the housing 110 includes a first port for introducing the high voltage wire and a second port for withdrawing the high voltage wire.

In some possible embodiments, the housing 110 may be an integrally formed structure or may be formed of at least two parts. When the housing 110 is integrally formed, the noise reduction device 100 may be combined with a high voltage wire to form a high voltage harness assembly, but there is a problem in that the device is difficult to be mounted or dismounted and replaced. Based on this, another noise reduction device 100 is proposed in the embodiment of the present application.

Fig. 4 shows yet another noise reduction device 100 according to an embodiment of the present application.

Referring to fig. 4, the housing 110 of the noise reduction device 100 may include a detachable first housing 111 and a detachable second housing 112, which are abutted to form an inner cavity of the housing 110.

The first housing 111 may be a cover plate structure, and the second housing 112 may be a groove structure, so as to ensure that the high-voltage wire can be received in the housing 110. In the process of installing the noise reduction device 100 by using the high-voltage wire, the high-voltage wire may be first loaded into the second housing 112, and then the first housing 111 is fastened on the second housing 112, so that the installation of the noise reduction device 100 may be completed. In the process of removing the noise reduction device 100 from the high voltage wire, the high voltage wire is separated from the noise reduction device 100 by directly separating the first housing 111 and the second housing 112.

Based on the above technical solution, the installation and the disassembly of the noise reduction device 100 are facilitated by the design of the separate housings of the first housing 111 and the second housing 112.

In some possible embodiments, the inner shape of the first housing 111 takes the shape of a guide groove so that the inner shape of the first housing 111 matches the outer shape of the high voltage wire.

Accordingly, in the manufacturing process of the noise reduction device 100, the shape and size of the first housing 111 may be adjusted according to the size and arrangement form of the high-voltage wire. In a general case, the above-described first housing 111 takes the shape of a wire harness guide groove.

Based on the above technical solution, the first housing 111 can play a role in guiding and fixing the high-voltage wire, so as to prevent the high-voltage wire from moving in the noise reduction device 100 and from generating abnormal sound due to collision.

Fig. 5 shows a schematic diagram of yet another noise reduction device 100 according to an embodiment of the application. Wherein (a) in fig. 5 and (b) in fig. 5 show a schematic view of fixing the first housing and the second housing by snap-fit engagement; fig. 5 (c) shows a schematic view of fixing the first housing and the second housing by screw holes and nuts; fig. 5 (d) shows a schematic view of fixing the first housing and the second housing by bonding.

In some possible embodiments, the noise reduction device 100 further includes a first fixing member 140, where the first fixing member 140 is used to fix the first housing 111 and the second housing 112.

In some possible embodiments, referring to fig. 5 (a), the first fixing member 140 may include a clip 141 and a clip hole 142, wherein the clip 141 is disposed on the first housing 111, the clip hole 142 is disposed on the second housing 112, and the clip 141 is inserted into the clip hole 142 to be snapped and fixed to fix the first housing 111 and the second housing 112 together.

In some possible embodiments, the card hole 142 may be a kind of card slot hole, since the housing 110 may be in the shape of a kind of wire harness guide slot.

In some possible embodiments, the first housing 111 and the second housing 112 may be further fixed together by other means, for example, as shown in (b) of fig. 5, the positions of the clamping holes 142 and the clamping buckles 141 may be exchanged, and then the clamping buckles 141 are inserted into the clamping holes 142 and then clamped, so as to fix the first housing 111 and the second housing 112 together; or referring to (c) of fig. 5, the first and second cases 111 and 112 are fixed by screw holes and nuts; alternatively, referring to fig. 5 (d), the first case 111 and the second case 112 may be directly fixed by adhesion, and the position of the adhesion point is indicated by 143.

Based on the above technical scheme, the first shell 111 and the second shell 112 can be ensured not to be separated due to shaking of the vehicle, so that a stable shielding space is formed, the high-voltage wire is stably stored in the shell 110, and the stability of the high-voltage wire is improved.

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 an inner wall of the first housing 111, and the second functional part 122 is attached to an inner wall of the second housing 112.

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

In some possible embodiments, the functional portion 120 may be a damping layer made of a damping material. Further, the first functional part 121 and the second functional part 122 are also damping layers made of damping materials. Further, the first functional portion 121 and the second functional portion 122 may be a layer of damping pad or a layer of other material capable of playing a damping role.

In some possible embodiments, the functional portion 120 is specifically disposed as follows in the damping pad of the first functional portion 121 and the second functional portion 122:

referring to (d) of fig. 5, since the high voltage wire side wall is brought into contact with the side plate inner wall of the second housing 112, the first functional part 121 and the second functional part 122 may cover the side plate inner wall of the second housing 112.

Referring to fig. 5 (a), 5 (b), or 5 (c), since there is a certain distance between the side wall of the high-voltage wire and the inner wall of the side plate of the second housing 112 and the guide groove-shaped first housing 111 plays a role in fixing the high-voltage wire, the first functional part 121 is provided only on the lower end surface of the first housing 111 and the second functional part 122 is provided only on the inner bottom surface of the second housing 112.

Alternatively, the functional part 120 may be provided at a position where the high voltage wire contacts the case 110 in order to reduce material consumption of the functional part 120. Thereby reducing the manufacturing cost of the noise reduction device 100.

Based on the above technical scheme, through the position of reasonable setting functional part 120, effectively absorb high-voltage wire self vibration in transmission electric energy in-process, can effectively restrain to vibrate together because of high-voltage wire drives other parts that contact with high-voltage wire, further reduced the vibration noise of whole car.

In some possible embodiments, the functional part 120 is deformed when the high voltage wire is loaded in the housing 110. Or the functional part 120 and the high voltage wire are closely contacted.

Fig. 6 is a schematic diagram showing the dimensional relationships of the components of the noise reduction device 100 according to the embodiment of the application.

Referring to fig. 6, the height relationship of the components of the noise reduction device 100 may be: h is less than or equal to h1+h2+h3.

Where H is the inner height of the case 110, H1 is the vertical section height of the first functional portion 121, H2 is the vertical section height of the second functional portion 122, and H3 is the vertical section height of the high-voltage wire.

Referring to fig. 6, the relationship of the widths of the respective components of the noise reduction device 100 may be: w is equal to or less than w1+w2+Nxw3+w4.

Wherein W is the inner width of the housing 110, W1 is the cross-sectional width of the second functional portion 122 on the left side wall of the inner cavity of the housing 110, W2 is the cross-sectional width of the second functional portion 122 on the right side wall of the inner cavity of the housing 110, W3 is the cross-sectional width of the high-voltage wires, W4 is the gap between the high-voltage wires, and N is the number of high-voltage wires loaded by the noise reduction device 100.

In some possible embodiments, referring to fig. 5 (a), there is a certain distance between the sidewall of the high-voltage wire and the inner wall of the side plate of the second housing 112, so the width relationship of the components of the noise reduction device 100 may be: w > w1+w2+nxw3+w4. It can be seen that, in the noise reduction device 100 of this structural form, if the functional portion 120 and the high-voltage wire are to be tightly contacted, it is only necessary to ensure that the height relationship of each component of the noise reduction device 100 satisfies h.ltoreq.h1+h2+h3.

Based on the above technical scheme, the functional part 120 can be fully contacted with the high-voltage wire, so that the vibration force of the high-voltage wire can be fully absorbed, the high-voltage wire can be further restrained from driving other parts contacted with the high-voltage wire to vibrate together, the vibration noise of the whole vehicle is further reduced, the high-voltage wire is further fixed, and the abnormal sound caused by shaking and collision of the high-voltage wire in the inner cavity is avoided.

Fig. 7 shows a schematic diagram of yet another noise reduction device 100 according to an embodiment of the present application.

In some possible embodiments, when the noise reducer 100 is applied to a vehicle, the second housing 112 further includes a support frame 150 and a second fixing member 160, wherein the support frame 150 is disposed on an outer bottom surface of the second housing 112, and the second fixing member 160 is used for fixing the support frame 150 to a body part 170 of the vehicle.

In some possible embodiments, the support bracket 150 may be provided with openings for securing with the body member 170 in the form of ties or bolts.

In some possible embodiments, the body component 170 may be a door panel, a body chassis, or the like.

Based on the above technical scheme, the stability of the noise reduction device 100 can be further improved, and the phenomenon that the noise reduction device 100 moves in the process of shaking the vehicle and collides with other parts in the vehicle to generate collision noise is avoided. Thereby further reducing the noise pollution of the whole vehicle.

In some possible embodiments, if the distance between the part of the high-voltage wire and the other vehicle body components is far, the electromagnetic interference on the other vehicle body components in the process of transmitting the electric energy by the part of the high-voltage wire is limited, and the vibration of the other vehicle body components is difficult to be caused by the formed electric power. Therefore, the noise reduction device 100 may be attached only to the high-voltage wire closer to the vehicle body member.

In some possible embodiments, a plurality of support brackets 150 and second fixtures 160 may be included in the noise reducer 100 to further increase the stability of the noise reducer 100 installed in a vehicle.

Fig. 8 shows an additional schematic diagram of a noise reduction device 100 according to an embodiment of the application.

Taking a thinner underbody 180 as an example, below the underbody 180 is a battery pack-loaded chassis assembly 171, with high voltage wiring between the underbody 180 and the chassis assembly 171 to supply power to the drive motor 190. In this case, the above-described noise reduction device 100 may be attached only to the high-voltage wire spaced apart from the underbody 180 by a first distance L, which may be determined experimentally in advance, for example, 10cm. When the distance between the high-voltage wire and the underbody 180 is greater than the first distance L, the vibration influence on the underbody 180 is not caused by the electromotive force generated in the process of transmitting the electric energy by the high-voltage wire.

Based on the technical scheme, the noise reduction equipment is additionally arranged on the high-voltage wires only aiming at the part which can cause vibration influence on other vehicle body parts, so that the vibration noise pollution of the whole vehicle is reduced, and the manufacturing cost of the whole vehicle is controlled.

The embodiment of the application also provides a high-voltage harness assembly, which comprises a high-voltage wire and any of the noise reduction devices 100 provided by the embodiment, wherein the noise reduction device 100 is loaded with the high-voltage wire.

The present application also provides a vehicle including any one of the noise reduction devices 100 provided in the above embodiments, or including the above high voltage wire harness assembly.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A noise reduction device, comprising:

A housing (110) and a functional unit (120);

The shell (110) is made of electromagnetic shielding materials, and an inner cavity of the shell (110) is used for accommodating high-voltage wires which are used for transmitting electric energy in a vehicle; the functional part (120) is attached to the inner wall of the inner cavity, and the functional part (120) is used for absorbing force generated by vibration of the high-voltage wire.

2. The noise reduction device according to claim 1, characterized in that the housing (110) comprises a detachable first housing (111) and a second housing (112) such that the first housing (111) and the second housing (112) together form the inner cavity.

3. The noise reduction device of claim 2, further comprising:

And a first fixing member (140), wherein the first fixing member (140) is used for fixing the first shell (111) and the second shell (112).

4. A noise reduction device according to claim 3, characterized in that the first fixing member (140) comprises a catch (141) and a catch hole (142), the catch (141) being arranged in the first housing (111), the catch hole (142) being arranged in the second housing (112).

5. The noise reduction device according to any one of claims 2 to 4, characterized in that the second housing (112) further includes a support frame (150) and a second fixing member (160), the support frame (150) being provided to a lower surface of the second housing (112), the second fixing member (160) being for fixing the support frame (150) to a vehicle body interior of the vehicle.

6. The noise reducer of any of claims 1-5, wherein the electromagnetic shielding material comprises a ferromagnetic material or a conductive material.

7. The noise reducer of any of claims 1-6, wherein the lumen is shaped to match the high voltage lead.

8. The noise reduction device according to any one of claims 2 to 7, characterized in that the functional portion (120) includes a first functional portion (121) and a second functional portion (122), the first functional portion (121) being attached to an inner wall of the first housing (111), the second functional portion (122) being attached to an inner wall of the second housing (112).

9. The noise reduction device according to any one of claims 1 to 8, characterized in that the functional portion (120) is a damping layer made of a damping material.

10. The noise reduction device according to any one of claims 1 to 9, characterized in that the functional portion (120) is deformed when a high-voltage wire is loaded in the housing (110).

11. A high voltage harness assembly comprising a high voltage wire and a noise reducer as claimed in any one of claims 1 to 10, wherein the noise reducer carries the high voltage wire.

12. A vehicle comprising a noise reducer according to any one of claims 1 to 10, or comprising a high voltage harness assembly according to claim 11.