A noise reduction device, a high voltage wiring harness assembly, and a vehicle

Abstract

The embodiment of the application provides a noise reduction device, and relates to the technical field of vehicles, which comprises a shell and a functional part; wherein the shell is made of an electromagnetic shielding material, an inner cavity of the shell is used for accommodating a high-voltage wire, the high-voltage wire is used for transmitting electric energy in a vehicle; and the inner cavity inner wall is attached with the functional part, and the functional part is used for absorbing force generated by self-vibration of the high-voltage wire. Based on the device, the shell made of the electromagnetic shielding material accommodates the high-voltage wire, electromagnetic radiation generated in the process of transmitting electric energy by the high-voltage wire is effectively shielded, and vibration noise generated by the electromagnetic radiation acting on components other than the high-voltage wire is inhibited. In addition, the functional part is used to absorb self-vibration of the high-voltage wire in the process of transmitting electric energy, so that vibration of other components 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 application can be applied to intelligent vehicles or new energy vehicles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, and more particularly, to a noise reduction device, a high-voltage wire harness assembly, and a vehicle. BACKGROUND

[0002] With the development of new energy technology, new energy vehicles are also becoming more and more popular, but as the degree of electrification and high-voltage of new energy vehicles deepens, it also brings corresponding problems.

[0003] As an important part of the energy system of a new energy vehicle, the high-voltage wire harness is mainly responsible for the transmission of electric energy. However, during the transmission of electric energy, a large amount of current ripple will be generated in the high-voltage wire harness, and these current ripples will generate electromagnetic radiation of a certain frequency. These electromagnetic radiations act on some metal parts of the vehicle body, such as the vehicle body floor, the door panel, the battery pack cover plate, etc., to generate an electric force. These metal parts will vibrate under the action of the electric force, and thus the whole vehicle will vibrate and produce noise, affecting the driving experience of the user.

[0004] Therefore, how to reduce the vibration noise caused by the high-voltage wire harness during the transmission of electric energy and improve the driving experience of the user is an urgent problem to be solved. SUMMARY

[0005] The embodiments of the present application provide a high-voltage wire harness assembly and a vehicle to solve the problem of vibration noise caused by the high-voltage wire harness during the transmission of electric energy and reduce the driving experience of the user.

[0006] In a first aspect, a noise reduction device is provided, comprising: a shell and a functional part; the shell is made of an electromagnetic shielding material, and an inner cavity of the shell is used to accommodate a high-voltage wire, the high-voltage wire being used to transmit electric energy in a vehicle; the inner wall of the inner cavity is attached with the functional part, and the functional part is used to absorb the force generated by the vibration of the high-voltage wire itself.

[0007] For example, the shape and size of the shell and its inner cavity can be adjusted according to the number and shape of the high-voltage wire to be loaded, so that the shape and size of the shell are consistent with the shape of the high-voltage wire.

[0008] For example, the shell further comprises 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.

[0009] Based on the above technical solution, the shell made of an electromagnetic shielding material accommodates the high-voltage wire, effectively shielding the electromagnetic radiation generated by the high-voltage wire during the transmission of electric energy, and suppressing the vibration noise generated by the components other than the high-voltage wire affected by the electromagnetic radiation. In addition, the functional part is used to absorb the vibration of the high-voltage wire itself during the transmission of electric energy, thereby effectively suppressing the vibration of other components in contact with the high-voltage wire driven by the high-voltage wire, and further reducing the vibration noise of the whole vehicle.

[0010] With reference to the first aspect, in some implementations of the first aspect, the shell comprises a first shell and a second shell which are detachable, so that the first shell and the second shell jointly form the inner cavity.

[0011] For example, the first shell can be arranged on the second shell.

[0012] For example, the first shell can be a cover plate structure, and the second shell can be a groove structure, so as to ensure that the high-voltage wire can be accommodated in the shell. During installation of the noise reduction device on the high-voltage wire, the high-voltage wire can be first carried in the second shell, and then the first shell is buckled on the second shell, so that the installation of the noise reduction device is completed. During dismounting of the noise reduction device from the high-voltage wire, the first shell and the second shell are directly separated, so that the high-voltage wire and the noise reduction device are separated.

[0013] Based on the technical solution, the shell design of the first shell and the second shell being separated facilitates the installation and dismounting of the noise reduction device.

[0014] With reference to the first aspect, in some implementations of the first aspect, the device further comprises a first fixing member for fixing the first shell and the second shell.

[0015] Based on the technical solution, the first shell and the second shell can be prevented from being separated due to shaking of the vehicle, a relatively stable shielding space is formed, the high-voltage wire is stably accommodated in the shell, and the stability of the high-voltage wire is improved.

[0016] With reference to the first aspect, in some implementations of the first aspect, the first fixing member comprises a buckle and a clamping hole, the buckle is arranged on the first shell, and the clamping hole is arranged on the second shell.

[0017] For example, the first shell can be in the shape of a wire harness guide groove, and the clamping hole can be a clamping groove hole matched with the first shell.

[0018] For example, the positions of the clamping hole and the buckle can be exchanged; in addition, the first shell and the second shell can be fixed by a threaded hole and a nut; the first shell and the second shell can also be directly fixed by adhesion.

[0019] Based on the technical solution, the first shell and the second shell can be prevented from being separated due to shaking of the vehicle, a relatively stable shielding space is formed, the high-voltage wire is stably accommodated in the shell, and the stability of the high-voltage wire is improved.

[0020] With reference to the first aspect, in some implementations of the first aspect, the second shell further includes a support frame and a second fixing member, the support frame is arranged on a lower surface of the second shell, and the second fixing member is configured to fix the support frame to an interior part of the vehicle body.

[0021] For example, the noise reduction device can be fixed to an interior part of the vehicle body.

[0022] For example, the support frame can be provided with an opening for being fixed to the interior part of the vehicle body by a cable tie or a bolt.

[0023] For example, the interior part of the vehicle body can be a door panel, a chassis, or the like.

[0024] For example, if a part of the high-voltage wire is far away from other parts of the vehicle body, the part of the high-voltage wire has limited electromagnetic interference to the other parts of the vehicle body during transmission of electric energy, and it is difficult to cause vibration of the other parts of the vehicle body by the electric force. Therefore, the noise reduction device can be installed only for the high-voltage wire close to the parts of the vehicle body, so as to reduce the manufacturing cost of the vehicle.

[0025] For example, the noise reduction device can include a plurality of support frames and second fixing members, so as to further increase the stability of the noise reduction device installed in the vehicle.

[0026] Based on the above technical solution, the stability of the noise reduction device can be further improved, and the noise reduction device can be prevented from moving and colliding with other interior parts of the vehicle during shaking of the vehicle, so as to further reduce noise pollution of the vehicle.

[0027] With reference to the first aspect, in some implementations of the first aspect, the electromagnetic shielding material includes a ferromagnetic material or a conductive material.

[0028] For example, the electromagnetic shielding material can be a ferromagnetic material or a conductive material. The ferromagnetic material and the conductive material can enable the shell to have good electromagnetic radiation shielding performance, especially low-frequency electromagnetic radiation that can cause the vibration noise. The ferromagnetic material can be a silicon steel material, a nickel-based alloy, a rare earth alloy, or the like. The conductive material can be aluminum, iron, copper, or the like.

[0029] For example, the thickness of the shell is determined according to the material of the shell. For example, 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.

[0030] Based on the above technical solution, by selecting a material that can suppress low-frequency electromagnetic radiation that can cause the vibration noise as the material of the shell, the vibration noise generated by the electromagnetic radiation acting on the parts other than the high-voltage wire can be effectively suppressed.

[0031] With reference to the first aspect, in some implementations of the first aspect, the shape of the inner cavity matches the high-voltage wire.

[0032] Based on the above technical solution, the stability of the high-voltage wire loaded in the shell can be further increased, so that the high-voltage wire does not swing inside the shell or collide with the inner wall of the shell due to vehicle shaking, thereby avoiding abnormal noise caused thereby.

[0033] With reference to the first aspect, in some implementations of the first aspect, the functional part includes a first functional part attached to the inner wall of the first shell and a second functional part attached to the inner wall of the second shell.

[0034] For example, the first functional part can be arranged between the first shell and the high-voltage wire, and the second functional part can be arranged between the second shell and the high-voltage wire.

[0035] Based on the above technical solution, by reasonably arranging the position of the functional part, the vibration of the high-voltage wire during power transmission can be effectively absorbed, thereby effectively suppressing the vibration of other components in contact with the high-voltage wire driven by the high-voltage wire, and further reducing the vibration noise of the vehicle.

[0036] With reference to the first aspect, in some implementations of the first aspect, the functional part is a damping layer made of damping material.

[0037] For example, the first functional part and the second functional part are also damping layers made of damping material. In addition, the first functional part and the second functional part can be a damping pad or a layer of other material that can play a damping role.

[0038] Based on the above technical solution, by selecting damping material, the vibration of the high-voltage wire during power transmission can be effectively absorbed, thereby effectively suppressing the vibration of other components in contact with the high-voltage wire driven by the high-voltage wire, and further reducing the vibration noise of the vehicle.

[0039] With reference to the first aspect, in some implementations of the first aspect, when the high-voltage wire is loaded in the shell, the functional part deforms.

[0040] For example, the sum of the longitudinal section height h1 of the first functional part and the longitudinal section height h2 of the second functional part is equal to the inner height H of the shell.

[0041] Based on the above technical scheme, the functional part can be fully in contact with the high-voltage wire, thereby fully absorbing the vibration force of the high-voltage wire itself, thereby inhibiting the high-voltage wire from vibrating together with other components in contact with the high-voltage wire, further reducing the vibration noise of the whole vehicle, and further increasing the stability of the high-voltage wire loaded in the shell, so that the high-voltage wire does not swing in the shell or collide with the inner wall of the shell due to vehicle shaking, thereby avoiding abnormal noise.

[0042] In a second aspect, a high-voltage wire harness assembly is provided, which includes a high-voltage wire harness and the noise reduction device of any possible implementation manner of the first aspect.

[0043] In a third aspect, a vehicle is provided, which includes the noise reduction device of any possible implementation manner of the first aspect, or the high-voltage wire harness assembly of any possible implementation manner of the second aspect.

[0044] The beneficial effects of the device in the second aspect and the third aspect can refer to the first aspect, and for brevity, will not be described again. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a noise reduction device 100 provided by an embodiment of the present application.

[0046] Figure 2 is another noise reduction device 100 provided by an embodiment of the present application.

[0047] Figure 3 is another noise reduction device 100 provided by an embodiment of the present application.

[0048] Figure 4 is another noise reduction device 100 provided by an embodiment of the present application.

[0049] Figure 5 is another noise reduction device 100 provided by an embodiment of the present application.

[0050] Figure 5 (a) in FIG. 1 shows a schematic view of fixing the first shell and the second shell by buckling the buckle and the hole.

[0051] Figure 5 (b) in FIG. 1 shows another schematic view of fixing the first shell and the second shell by buckling the buckle and the hole.

[0052] Figure 5 (c) in FIG. 1 shows a schematic view of fixing the first shell and the second shell by a threaded hole and a nut.

[0053] Figure 5 (d) in FIG. 1 shows a schematic view of fixing the first shell and the second shell by adhesion.

[0054] Figure 6 is a schematic diagram of the size relationship of components of a noise reduction device 100 provided by an embodiment of the present application.

[0055] Figure 7 is another noise reduction device 100 provided by an embodiment of the present application.

[0056] Figure 8 is a schematic diagram of an additional installation of a noise reduction device 100 provided by an embodiment of the present application. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0058] It should be noted that, in the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this document only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone.

[0059] In the embodiments of the present application, the terms “first” and “second” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with “first” and “second” can explicitly or implicitly include one or more of the features. In addition, in the description of the embodiments of the present application, “multiple” means two or more than two, “at least one” and “one or more” means one, two or more than two. The singular expression “one”, “a kind”, “the”, “the above”, “the” and “this” are intended to also include, for example, the expression “one or more”, unless the context clearly indicates the opposite.

[0060] In this specification, the reference to “one embodiment” or “some embodiments” and 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 present application. Therefore, the statements “in one embodiment”, “in some embodiments”, “in other some embodiments”, “in further some embodiments” and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean “one or more but not all embodiments”, unless otherwise specifically emphasized. The terms “include”, “contain”, “have” and their variants mean “include but not limited to”, unless otherwise specifically emphasized.

[0061] In the description of the embodiments of the present application, the terms "upper", "lower", "left", "right", "inner", "outer", "vertical", "horizontal" and the like indicate the orientation or positional relationship defined with respect to the orientation in which the components in the drawings are placed, it should be understood that these directional terms are relative concepts, they are used for relative description and clarification, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, which can change accordingly according to the orientation in which the components in the drawings are placed, therefore it cannot be understood as a limitation of the present application. In addition, "vertical" in the present application is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0062] In the embodiments of the present application, the same reference signs are used to represent the same components or the same parts, for the same parts in the embodiments of the present application, only one part or component may be labeled with a reference sign in the drawings, it should be understood that the reference sign is also applicable to other identical parts or components. In addition, the various components in the drawings are not drawn to scale, the size and size of the components shown in the drawings are only exemplary, and should not be understood as a limitation of the present application.

[0063] The noise reduction device provided by the present application is used for loading a high-voltage wire harness of a mobile carrier, the mobile carrier in the present application can include a road vehicle, a water vehicle, an air vehicle, an industrial device, an agricultural device, or an entertainment device, etc. For example, the mobile carrier can be a vehicle, which is a general concept of a vehicle, and can be a vehicle (such as a commercial vehicle, a passenger vehicle, a motorcycle, a flying vehicle, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), an agricultural device (such as a mower, a harvester, etc.), a recreational device, a toy vehicle, etc., and the type of the vehicle is not limited in the embodiments of the present application. For another example, the mobile carrier can be an aircraft or a ship.

[0064] Taking the above vehicle as a new energy vehicle as an example, the high-voltage battery pack of the new energy vehicle is connected to the driving motor through a high-voltage wire harness to provide power for the driving motor. Due to the arrangement of the whole vehicle, the connection wire harness between the driving motor and the high-voltage battery pack is usually relatively long, and needs to be fixed on the motor and the body of the whole vehicle by means of a cable tie, a wire harness support and the like. Since the power switch tube needs to be used to adjust the power during the power supply of the high-voltage battery pack, the switching frequency of the power switch tube is usually 20 kHz, and during the switching, a large amount of current ripple will be generated in the high-voltage wire harness. Based on the principle of electromagnetic induction, some metal parts in the vehicle body, especially some metal parts with thin plate structures, will vibrate under the action of the electromagnetic force generated by the electromagnetic induction, and the vibration noise related to the switching frequency of the power switch tube will be generated, which seriously affects the driving experience of the user.

[0065] In addition, in the scenario of charging the new energy vehicle, the above vibration noise problem also exists. The charging voltage of the new energy vehicle at the present stage is as high as 800V, but considering that the charging voltage of most charging piles at the present stage is 400V, the 400V charging pile needs to be adapted. Therefore, during the charging process of the new energy vehicle, the power switch of the motor controller is used for voltage boosting, so that a large amount of current ripple is generated in the high-voltage wire harness. Especially in this scenario, the vehicle is in a stationary state, and the vibration noise of the whole vehicle caused by the current ripple will be more obvious, which seriously affects the driving experience of the user.

[0066] Although a wire harness shielding layer can be added to the high-voltage wire harness, the wire harness shielding layer is usually used to avoid electromagnetic interference of the high-voltage wire harness on the whole vehicle to improve the electromagnetic compatibility of the whole vehicle. The electromagnetic waves shielded by the wire harness shielding layer are all ultrahigh frequency electromagnetic waves, and the above vibration noise of the whole vehicle is usually not caused by ultrahigh frequency electromagnetic waves. Even if the wire harness shielding layer is added to the high-voltage wire harness, the above vibration noise pollution of the whole vehicle cannot be avoided.

[0067] In addition, during the transmission of electric energy by the high-voltage wire harness, the high-voltage wire harness will also be affected by high-amplitude current harmonics, causing the high-voltage wire harness itself to also vibrate at a high frequency, and driving other components in contact with the high-voltage wire harness to vibrate, further increasing the vibration noise of the whole vehicle.

[0068] In view of this, the embodiment of the present application proposes a noise reduction device, which suppresses the diffusion of electromagnetic radiation caused by current ripple and suppresses the vibration noise generated by other components caused by the high-frequency vibration of the high-voltage wire harness. When applied to a new energy vehicle, it can effectively reduce the vibration noise of the whole vehicle and improve the driving experience of the user.

[0069] Figure 1 A noise reduction device 100 proposed by an embodiment of the present application is shown.

[0070] In some possible embodiments, the noise reduction device 100 provided by the embodiments of the present application can be used for loading high-voltage wires of a new energy vehicle.

[0071] Reference Figure 1 As shown in the figure, the noise reduction device 100 can include a shell 110 and a functional part 120, wherein the shell 110 is made of an electromagnetic shielding material, an inner cavity of the shell 110 is used for accommodating high-voltage wires used for transmitting electric energy in a vehicle, and the inner wall of the inner cavity is attached with the functional part 120 used for absorbing force generated by vibration of the high-voltage wires.

[0072] In some possible embodiments, when the high-voltage wires are multiple, the multiple high-voltage wires can be referred to as a high-voltage wire harness.

[0073] In some possible embodiments, the electromagnetic shielding material can be a ferromagnetic material or a conductive material, and the ferromagnetic material and the conductive material can enable the shell 110 to have good electromagnetic radiation shielding performance, especially low-frequency electromagnetic radiation that can cause the vibration noise. The ferromagnetic material can be a silicon steel material, a nickel-based alloy, a rare earth alloy, etc., and the conductive material can be aluminum, iron, copper, etc.

[0074] In some possible embodiments, the thickness of the shell 100 is determined according to the material of the shell, for example, when the shell 100 is made of a ferromagnetic material, the thickness of the shell 100 can be 0.5 mm, and when the shell 100 is made of a conductive material, the thickness of the shell 100 can be 1.5 mm.

[0075] Based on the technical solution, the shell 110 made of the electromagnetic shielding material accommodates the high-voltage wires, effectively shields electromagnetic radiation generated by the high-voltage wires in the process of transmitting electric energy, and suppresses vibration noise generated by components affected by the electromagnetic radiation and located outside the high-voltage wires. In addition, the functional part 120 is used to absorb vibration of the high-voltage wires in the process of transmitting electric energy, thereby effectively suppressing vibration of other components in contact with the high-voltage wires driven by the high-voltage wires, and further reducing vibration noise of the whole vehicle.

[0076] Figure 2 Another noise reduction device 100 provided by the embodiments of the present application is shown.

[0077] In some possible embodiments, the shell 110 can be adjusted according to the number and shape of the high-voltage wires to be loaded, so that the shape of the shell 110 is consistent with the shape of the high-voltage wires.

[0078] Based on the above technical scheme, the high-voltage wire can be installed more firmly in the noise reduction device, and the noise reduction device 100 is prevented from shaking due to external reasons, so that the high-voltage wire swings in the noise reduction device 100, collides, and further emits abnormal noise. Thus, the noise pollution of the whole vehicle is further reduced.

[0079] Figure 3 Another noise reduction device 100 proposed by the embodiments of the application is shown.

[0080] In some possible embodiments, the shell 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.

[0081] In some possible embodiments, the shell 110 can be an integrally formed structure or can be composed of at least two parts. When the shell 110 is an integrally formed structure, the noise reduction device 100 can form a high-voltage wire harness assembly with the high-voltage wire, but this has the problem of difficult installation or disassembly and replacement of the device. Based on this, the embodiments of the application propose another noise reduction device 100.

[0082] Figure 4 Another noise reduction device 100 proposed by the embodiments of the application is shown.

[0083] Reference Figure 4 As shown in the figure, the shell 110 of the noise reduction device 100 can include a detachable first shell 111 and a second shell 112, and the two are docked to form the inner cavity of the shell 110.

[0084] The first shell 111 can be a cover plate structure, and the second shell 112 can be a groove structure, so as to ensure that the high-voltage wire can be accommodated in the shell 110. During installation of the noise reduction device 100 on the high-voltage wire, the high-voltage wire can be first carried in the second shell 112, and then the first shell 111 is buckled on the second shell 112, so that the installation of the noise reduction device 100 is completed. During disassembly of the noise reduction device 100 from the high-voltage wire, the first shell 111 and the second shell 112 are directly separated, so that the high-voltage wire and the noise reduction device 100 are separated.

[0085] Based on the above technical scheme, the shell design of the first shell 111 and the second shell 112 is separated, which facilitates the installation and disassembly of the noise reduction device 100.

[0086] In some possible embodiments, the inner shape of the first shell 111 is in the shape of a guide groove, so that the inner shape of the first shell 111 matches the outer shape of the high-voltage wire.

[0087] Therefore, in the manufacturing process of the noise reduction device 100, the shape and size of the first shell 111 can be adjusted according to the size and arrangement of the high-voltage wire. In general, the first shell 111 is in the shape of a wire harness guide groove.

[0088] Based on the above technical solution, the first shell 111 can guide and fix the high-voltage wire, preventing the high-voltage wire from moving around in the noise reduction device 100 and colliding to produce abnormal noise.

[0089] Figure 5 Another schematic diagram of the noise reduction device 100 is shown. Among them, Figure 5 (a) and Figure 5 (b) show a schematic diagram of fixing the first shell and the second shell by buckling the buckle hole. Figure 5 (c) shows a schematic diagram of fixing the first shell and the second shell by screw hole and nut. Figure 5 (d) shows a schematic diagram of fixing the first shell and the second shell by adhesion.

[0090] In some possible embodiments, the noise reduction device 100 further comprises a first fixing member 140 for fixing the first shell 111 and the second shell 112.

[0091] In some possible embodiments, referring to (a) of Figure 5 , the first fixing member 140 can include a buckle 141 and a buckle hole 142, wherein the buckle 141 is arranged on the first shell 111, the buckle hole 142 is arranged on the second shell 112, and the buckle 141 is inserted into the buckle hole 142 for buckling and fixing to fix the first shell 111 and the second shell 112 together.

[0092] In some possible embodiments, since the shell 110 can be in the shape of a wire harness guide groove, the buckle hole 142 can be a clamping groove hole.

[0093] In some possible embodiments, the first shell 111 and the second shell 112 can also be fixed together by other means, for example, referring to (b) of Figure 5 , the positions of the buckle hole 142 and the buckle 141 can be exchanged, and then the buckle 141 is inserted into the buckle hole 142 for buckling and fixing to fix the first shell 111 and the second shell 112 together; or, referring to (c) of Figure 5 , the first shell 111 and the second shell 112 are fixed by screw hole and nut; or, referring to (d) of Figure 5 , the first shell 111 and the second shell 112 are fixed by adhesion.As 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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:

[0099] 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 6 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, in order to reduce the material consumption of the functional part 120, the functional part 120 can be arranged at the position where the high-voltage wire and the shell 110 contact. In this way, the manufacturing cost of the noise reduction device 100 is reduced.

[0102] Based on the above technical solution, by reasonably arranging the position of the functional part 120, the vibration of the high-voltage wire itself during the transmission of electric energy is effectively absorbed, the vibration of other components driven by the high-voltage wire in contact with the high-voltage wire is effectively inhibited, and the vibration noise of the whole vehicle is further reduced.

[0103] In some possible embodiments, when the high-voltage wire is loaded in the shell 110, the functional part 120 deforms. Alternatively, the functional part 120 and the high-voltage wire are in close contact.

[0104] Figure 6 The size relationship between the components of the noise reduction device 100 according to the embodiment of the application is shown.

[0105] Reference H ≤ h1 + h2+ h3 It is shown that the height relationship between the components of the noise reduction device 100 can be: Figure 6 .

[0106] Among them, H is the inner height of the shell 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 wire.

[0107] Reference W ≤ w1+w2+N×w3+w4 It is shown that the width relationship between the components of the noise reduction device 100 can be: Figure 5 .

[0108] Among them, W is the inner width of the shell 110, w1 is the cross-sectional width of the second functional part 122 on the left side wall of the inner cavity of the shell 110, w2 is the cross-sectional width of the second functional part 122 on the right side wall of the inner cavity of the shell 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 in the noise reduction device 100.

[0109] In some possible embodiments, reference is made to (a) in W > w1+ It is shown that 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 shell 112, so the width relationship between the components of the noise reduction device 100 can be: w2+N×w3+w4 H ≤ h1 + h2+ h3 It can be seen that for the noise reduction device 100 of this structure, in order to ensure that the functional part 120 and the high-voltage wire are in close contact, it is only necessary to ensure that the height relationship between the components of the noise reduction device 100 satisfies the above Figure 7 .

[0110] Based on the above technical scheme, the functional part 120 can be in full contact with the high-voltage conductor, thereby fully absorbing the vibration force of the high-voltage conductor itself, thereby inhibiting the high-voltage conductor from vibrating together with other components in contact with the high-voltage conductor, further reducing the vibration noise of the whole vehicle, and further fixing the high-voltage conductor to avoid shaking and colliding in the above-mentioned inner cavity, causing abnormal noise.

[0111] Figure 8 A schematic diagram of another noise reduction device 100 according to an embodiment of the application is shown.

[0112] In some possible embodiments, when the above-mentioned noise reduction device 100 is applied to a vehicle, the second shell 112 further includes a support frame 150 and a second fixing member 160, wherein the support frame 150 is arranged on the outer bottom surface of the second shell 112, and the second fixing member 160 is used to fix the support frame 150 to a vehicle body component 170.

[0113] In some possible embodiments, the support frame 150 can be provided with an opening for fixing to the vehicle body component 170 in the form of a cable tie or a bolt.

[0114] In some possible embodiments, the vehicle body component 170 can be a door panel, a vehicle body chassis, etc.

[0115] Based on the above technical scheme, the stability of the noise reduction device 100 can be further improved, and the noise reduction device 100 can be prevented from moving and colliding with other vehicle components to generate collision noise during vehicle shaking. Thus, the noise pollution of the whole vehicle can be further reduced.

[0116] In some possible embodiments, if the distance between part of the high-voltage conductor and other vehicle body components is far, the electromagnetic interference of the part of the high-voltage conductor on other vehicle body components during the transmission of electric energy is limited, and it is difficult to cause vibration of other vehicle body components by forming an electric force. Therefore, the above-mentioned noise reduction device 100 can be installed only for the high-voltage conductor close to the vehicle body component.

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

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

[0119] Taking the thinner body bottom plate 180 as an example, the chassis assembly 171 loaded with the battery pack is below the body bottom plate 180, and the high-voltage wire exists between the body bottom plate 180 and the chassis assembly 171, which is used to transmit power for the driving motor 190. In this scenario, the above noise reduction device 100 can be installed only for the high-voltage wire which is away from the body bottom plate 180 by a first distance L, and the first distance L can be determined by experiments in advance, for example, 10 cm. When the distance between the high-voltage wire and the body bottom plate 180 is greater than the first distance L, the electric power generated in the process of transmitting power by the high-voltage wire will not cause vibration influence on the body bottom plate 180.

[0120] Based on the above technical solutions, the above noise reduction device is installed only for the part of the high-voltage wire which will cause vibration influence on other vehicle body components, so that the vibration and noise pollution of the whole vehicle is reduced, and the manufacturing cost of the whole vehicle is also controlled.

[0121] The embodiment of the present application also provides a high-voltage wire harness assembly, which comprises a high-voltage wire and any one of the above noise reduction devices 100, wherein the noise reduction device 100 is loaded with the high-voltage wire.

[0122] The embodiment of the present application also provides a vehicle, which comprises any one of the above noise reduction devices 100 or the above high-voltage wire harness assembly.

[0123] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection 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) is made of electromagnetic shielding material, an inner cavity of the shell (110) is used to accommodate high-voltage wires, the high-voltage wires are used to transmit electric energy in a vehicle; an inner wall of the inner cavity is attached with the functional part (120), the functional part (120) is used to absorb the force generated by the vibration of the high-voltage wires, the shell (110) comprises a detachable first shell (111) and a second shell (112), so that the first shell (111) and the second shell (112) together form the inner cavity, when the high-voltage wires are loaded in the shell (110), the functional part (120) is deformed.

2. The noise reducing device of claim 1, wherein, The device further comprises: a first fixing member (140), the first fixing member (140) is used to fix the first shell (111) and the second shell (112).

3. The noise reducing device of claim 2, wherein, the first fixing member (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).

4. The noise reducing device of any one of claims 1 to 3, wherein, the second shell (112) further comprises a support frame (150) and a second fixing member (160), the support frame (150) is arranged on the lower surface of the second shell (112), and the second fixing member (160) is used to fix the support frame (150) to the inside of the vehicle body of the vehicle.

5. The noise reducing device of any one of claims 1 to 3, wherein, the electromagnetic shielding material comprises ferromagnetic material or conductive material.

6. The noise reducing device of any one of claims 1 to 3, wherein, the shape of the inner cavity matches the high-voltage wires.

7. The noise reducing device of any one of claims 1 to 3, 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 3, wherein, the functional part (120) is a damping layer made of damping material.

9. A high voltage wiring harness assembly characterized by, a high-voltage wire and the noise reduction device as claimed in any one of claims 1 to 8, wherein the noise reduction device is loaded with the high-voltage wires.

10. A vehicle characterized by comprising: the noise reduction device as claimed in any one of claims 1 to 8, or the high-voltage wire harness assembly as claimed in claim 9.

Images