Housing, powertrain and vehicle

Abstract

Disclosed in the present application are a housing, a powertrain and a vehicle, relating to the technical field of new energy vehicles. The housing is at least one of an upper cover of a motor controller, a housing of the motor controller, and a housing of the powertrain, and comprises a plastic substrate and an electromagnetic shielding body. The electromagnetic shielding body is provided on the plastic substrate and is used for realizing electromagnetic shielding. The technical solution provided in the present application provides the housing capable of achieving weight reduction and noise reduction effects.

Description

Housing, power assembly and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202421453151.8, filed on June 24, 2024, entitled "Housing, motor controller and power assembly", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of new energy vehicles, in particular to a housing, a power assembly and a vehicle. BACKGROUND

[0003] In the power system of a new energy vehicle, the material applied in the housing is mostly aluminum alloy, so as to realize electromagnetic shielding, protection, sealing and the like. Since the density of the aluminum alloy is 2.716 kg / m3, the weight thereof is large, and the material damping factor is high, which leads to a large noise in the application process.

[0004] UTILITARIAN CONTENT

[0005] The main purpose of the present application is to provide a housing, a power assembly and a vehicle, which can realize the effects of weight reduction and noise reduction.

[0006] To achieve the above-mentioned purpose, the present application provides a housing, which is at least one of an upper cover of a motor controller, a housing of the motor controller and an outer shell of a power assembly, and the housing comprises:

[0007] a plastic base;

[0008] an electromagnetic shielding body, which is arranged on the plastic base and is used for realizing electromagnetic shielding.

[0009] In an embodiment, the electromagnetic shielding body comprises a metal shielding layer, which is arranged on the surface of the plastic base.

[0010] In an embodiment, the electromagnetic shielding body further comprises an anti-corrosion layer, which is arranged on the surface of the metal shielding layer.

[0011] In an embodiment, the electromagnetic shielding body comprises a carbon fiber cloth, and the plastic base is filled in the carbon fiber cloth to form a carbon fiber plastic composite layer.

[0012] In an embodiment, the electromagnetic shielding body further comprises a metal mesh, which is arranged in a stack with the carbon fiber plastic composite layer.

[0013] In an embodiment, the metal mesh is provided with at least one layer of the carbon fiber plastic composite layer on opposite sides thereof.

[0014] In an embodiment, the electromagnetic shielding body and the plastic base are integrally injection molded.

[0015] In an embodiment, the electromagnetic shielding body comprises metal fibers and / or carbon fibers.

[0016] In an embodiment, the shell comprises:

[0017] a bottom shell comprising the plastic base and the electromagnetic shielding body;

[0018] an upper cover covering the bottom shell, the upper cover comprising the plastic base and the electromagnetic shielding body.

[0019] The application also proposes a motor controller comprising a controller body and a motor controller shell, the motor controller shell comprising a motor controller upper cover and a motor controller shell body, the motor controller upper cover and / or the motor controller shell body being the shell as described above, the controller body being arranged in the motor controller shell; wherein the shell comprises:

[0020] a plastic base;

[0021] an electromagnetic shielding body arranged in the plastic base for electromagnetic shielding.

[0022] The application also proposes a power assembly comprising a power assembly shell;

[0023] The power assembly shell is the shell as described above.

[0024] The application also proposes a vehicle comprising the power assembly.

[0025] The technical solution of the application can realize the electromagnetic shielding effect of the shell by using the plastic base as the base of the shell and arranging the electromagnetic shielding body in the plastic base, so as to replace the use of aluminum alloy as the shell. Since the density of plastic is about 1.8 kg / m3, which is much smaller than the density of aluminum alloy, the weight of the shell formed by the plastic base and the electromagnetic shielding body is smaller under the same volume, and the material damping factor is lower, so the noise is also smaller in the application process, thereby realizing the effects of weight reduction and noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative labor.

[0027] Fig. 1 is a structural schematic diagram of an embodiment of the shell provided by the present application;

[0028] Fig. 2 is a sectional view of an embodiment of the shell provided by the present application;

[0029] Fig. 3 is an exploded view of another embodiment of the shell provided by the present application.

[0030] Brief Description of the Drawings: 100, shell; 10, plastic base; 11, inner side surface; 12, outer side surface; 20, electromagnetic shielding body; 21, metal shielding layer; 22, anti-corrosion layer; 23, carbon fiber cloth; 24, carbon fiber plastic composite layer; 25, metal mesh.

[0031] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0034] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel solutions are included, taking "A and / or B" as an example, including A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed by the present application.

[0035] In a new energy vehicle power system, the material of the shell is mostly aluminum alloy to realize electromagnetic shielding, protection, sealing and other functions. Since the density of aluminum alloy is 2.716 kg / m3, it is heavy, and the material damping factor is high, resulting in a large noise in the application process.

[0036] Based on the above problems, the shell is provided to realize the effect of reducing weight and noise. Optionally, the shell can be the housing of the motor controller (including the upper cover of the motor controller and the shell of the motor controller), and can also be the housing of the power assembly, etc.

[0037] Please refer to FIGS. 1-3, in an embodiment of the present application, the shell 100 includes a plastic base body 10 and an electromagnetic shielding body 20; the electromagnetic shielding body 20 is arranged on the plastic base body 10 to realize electromagnetic shielding.

[0038] The technical solution of the present application uses the plastic base body 10 as the base body of the shell 100, and uses the electromagnetic shielding body 20 arranged on the plastic base body 10, so that the shell 100 can realize the effect of electromagnetic shielding, replacing the use of aluminum alloy as the shell 100. Since the density of plastic is about 1.8 kg / m3, which is much smaller than the density of aluminum alloy, the weight of the shell 100 formed by the plastic base body 10 and the electromagnetic shielding body 20 is smaller under the same volume, and the material damping factor is lower, so the noise is smaller in the application process, thereby realizing the effects of reducing weight and noise.

[0039] It should be noted that compared with the aluminum alloy shell, the shell 100 formed by the plastic base body 10 and the electromagnetic shielding body 20 can reduce the weight by 30%-60%, while the noise can be reduced by 5dB-10dB, and has the advantage of low carbon emission.

[0040] In addition, compared with the aluminum alloy shell, the shell 100 formed by the plastic base body 10 and the electromagnetic shielding body 20 also has good corrosion resistance, such as strong resistance to salt spray corrosion and cooling liquid corrosion.

[0041] As some examples, the plastic base body 10 can be engineering plastics such as ABS, nylon, polyalumina, etc.

[0042] In actual application process, the electromagnetic shielding body 20 can be a conductive and magnetic material such as metal, carbon fiber, etc., as long as it can play the effect of electromagnetic shielding.

[0043] In actual application process, the electromagnetic shielding body 20 can be arranged on the surface of the plastic base body 10, or filled in the plastic base body 10, or the plastic base body 10 can be filled in the electromagnetic shielding body 20, as long as the formed shell 100 can reduce weight through the plastic base body 10 and has electromagnetic shielding effect.

[0044] Please refer to FIG. 1 and FIG. 2, in an embodiment of the present application, the electromagnetic shielding body 20 comprises a metal shielding layer 21, which is arranged on the surface of the plastic base body 10.

[0045] In this way, by arranging the metal shielding layer 21 directly on the surface of the plastic base body 10, the metal shielding layer 21 can play a good electromagnetic shielding effect, and the preparation process is relatively simple and fast.

[0046] In actual application process, the metal shielding layer 21 can be a copper layer, or a silver layer or other conductive and magnetic metal material, as long as it can play an electromagnetic shielding effect.

[0047] As some examples, in order to make the metal shielding layer 21 play a better electromagnetic shielding effect while reducing the cost investment, the metal shielding layer 21 can be a copper layer.

[0048] In actual application process, the metal shielding layer 21 can be fixed on the surface of the plastic base material by adhesion, spraying, electroplating and the like.

[0049] As some examples, in order to ensure the connection reliability between the metal shielding layer 21 and the plastic base body 10, the metal shielding layer 21 can be electroplated on the surface of the plastic base body 10.

[0050] As some examples, in order to ensure that the shell 100 has a strong electromagnetic shielding effect, the metal shielding layer 21 can be arranged on the inner side surface 11 and the outer side surface of the plastic base body 10, as shown in FIG. 2.

[0051] Please refer to FIG. 1 and FIG. 2, in an embodiment of the present application, the electromagnetic shielding body 20 further comprises an anti-corrosion layer 22, which is arranged on the surface of the metal shielding layer 21.

[0052] In this way, since the metal shielding layer 21 has poor corrosion resistance, by arranging the anti-corrosion layer 22 on the surface of the metal shielding layer 21, the metal shielding layer 21 can be prevented from being exposed to the environment, and the corrosion resistance of the shell 100 can be improved to prolong the service life of the shell 100.

[0053] As some examples, the anti-corrosion layer 22 can be a nickel layer, which has good anti-corrosion effect and low cost.

[0054] In actual application, the anticorrosion layer 22 can be fixed on the surface of the metal shielding layer 21 by means of bonding, spraying, electroplating or the like.

[0055] As some examples, in order to ensure the connection reliability between the anticorrosion layer 22 and the metal shielding layer 21, the anticorrosion layer 22 can be sprayed on the surface of the metal shielding layer 21.

[0056] In some embodiments, by arranging the copper layer and the nickel layer on the surface of the plastic base 10, the weight of a single cover of the housing 100 can be about 561 g, which can be reduced by 41.3% compared with an aluminum alloy cover plate, and the noise can be reduced by 5 dB to 10 dB.

[0057] Referring to FIG. 3, in another embodiment of the present application, the electromagnetic shielding body 20 comprises a carbon fiber cloth 23, and the plastic base 10 is filled in the carbon fiber cloth 23 to form a carbon fiber plastic composite layer 24.

[0058] In this way, by directly immersing the carbon fiber cloth 23 in molten plastic, the molten plastic is fully immersed in the interior of the carbon fiber cloth 23, and after the carbon fiber cloth 23 is taken out and cooled, the plastic base 10 is filled in the carbon fiber cloth 23 to form the carbon fiber plastic composite layer 24, which can achieve good electromagnetic shielding effect through the carbon fiber cloth 23, and the preparation process is also relatively simple and fast.

[0059] Optionally, referring to FIG. 3, in another embodiment of the present application, the electromagnetic shielding body 20 further comprises a metal mesh 25, and the metal mesh 25 is arranged in layers with the carbon fiber plastic composite layer 24.

[0060] In this way, by arranging the metal mesh 25 in layers with the carbon fiber plastic composite layer 24 to form the housing 100, the electromagnetic shielding effect can be achieved through the carbon fiber cloth 23 and the metal mesh 25, so that the electromagnetic shielding performance of the power assembly housing can be improved.

[0061] In this embodiment, the preparation process can be as follows: first, the carbon fiber cloth 23 is directly immersed in molten plastic; second, the carbon fiber cloth 23 is taken out and cooled to obtain the carbon fiber plastic composite layer 24; third, the carbon fiber plastic composite layer 24 is stacked and laid with the metal mesh 25; fourth, after being cut to a suitable size, it is placed in a fixed mold; fifth, the mold is heated and pressurized to automatically form, and after cooling, the housing 100 product can be obtained after demolding.

[0062] In some embodiments, by using the plastic base 10 to fill the carbon fiber cloth 23 to form the carbon fiber plastic composite layer 24, and laminating the metal mesh 25, the weight of the single cover of the shell 100 can be about 372.6g, which can reduce the weight by 60.9% compared with the aluminum alloy cover plate, and the noise can be reduced by 5dB-10dB.

[0063] In actual application, the number of the metal mesh 25 can be one layer or at least two layers, which can be determined according to the actual required electromagnetic shielding effect, and is not specifically limited here. In addition, the number of the carbon fiber plastic composite layer 24 can also be one layer or at least two layers, which can be determined according to the actual required strength, and is not specifically limited here.

[0064] Optionally, referring to FIG. 3, in another embodiment of the present application, the opposite sides of the metal mesh 25 are provided with at least one carbon fiber plastic composite layer 24.

[0065] In this way, since the corrosion resistance of the metal mesh 25 is poor, by providing at least one carbon fiber plastic composite layer 24 on the opposite sides of the metal mesh 25, the metal mesh 25 can be prevented from being exposed to the environment, and the corrosion resistance of the shell 100 can be improved to prolong the service life of the shell 100.

[0066] In actual application, the number of the carbon fiber plastic composite layer 24 on the opposite sides of the metal mesh 25 can be the same or different.

[0067] In still another embodiment of the present application, the electromagnetic shielding body 20 and the plastic base 10 are integrally injection molded.

[0068] In this way, by doping the electromagnetic shielding body 20 and the plastic base 10 together and then integrally injection molding to form the shell 100, the preparation process can be simplified, and the connection reliability between the electromagnetic shielding body 20 and the plastic base 10 can be effectively ensured.

[0069] In actual application, the electromagnetic shielding body 20 can be a conductive and magnetic material such as metal, metal fiber, or carbon fiber.

[0070] Optionally, in still another embodiment of the present application, the electromagnetic shielding body 20 includes metal fiber and / or carbon fiber.

[0071] In this way, by using metal fiber and / or carbon fiber and the plastic base 10 to integrally injection mold to form the shell 100, not only good electrical conductivity, thermal conductivity, magnetic conductivity, and high-temperature resistance are achieved, but also the manufacturing method is relatively simple and the cost is relatively low.

[0072] Referring to FIG. 1, in an embodiment of the present application, the shell 100 comprises a bottom shell and an upper cover; the bottom shell comprises a plastic base 10 and an electromagnetic shielding body 20; the upper cover covers the bottom shell and comprises a plastic base 10 and an electromagnetic shielding body 20.

[0073] In this way, the shell 100 is formed by using the upper cover and the bottom shell to cover each other, which facilitates the installation of other components inside the shell 100, and by the fact that the bottom shell and the upper cover both comprise a plastic base and an electromagnetic shielding body 20, the bottom shell and the upper cover can both achieve the effects of weight reduction and noise reduction.

[0074] In actual application, the bottom shell and the upper cover can be connected by using bolts, buckles and other connecting members to ensure the installation reliability between the bottom shell and the upper cover.

[0075] As some examples, to ensure the electrical conductivity between the bottom shell and the upper cover, metal connecting members can be used to connect the bottom shell and the upper cover. Alternatively, mounting holes can be provided on the bottom shell and the upper cover, and metal connecting members can be used to pass through the mounting holes of the bottom shell and the upper cover respectively, so as to lock the bottom shell and the upper cover.

[0076] The present application also proposes a motor controller, which comprises a controller body and a motor controller shell, the motor controller shell comprises a motor controller upper cover and a motor controller shell body, the motor controller upper cover and / or the motor controller shell body is the shell 100, the specific structure of the shell 100 is referred to the above embodiments, since the motor controller adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. The controller body is arranged in the motor controller shell.

[0077] The present application also proposes a power assembly, which comprises a power assembly shell, a motor and a motor controller, the specific structure of the motor controller is referred to the above embodiments, since the motor controller adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0078] The motor controller is used to drive the motor to work, the motor and the motor controller are arranged in the power assembly shell; the power assembly shell is the shell 100, the specific structure of the shell 100 is referred to the above embodiments, since the motor controller adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0079] In actual application, the power assembly can be applied to electric equipment such as vehicles and looms, which is not limited here.

[0080] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which is made based on the technical concept of the present application, and utilizes the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A housing, characterized in that, The housing includes: Plastic matrix; An electromagnetic shielding body is disposed on the plastic matrix to achieve electromagnetic shielding.

2. The housing as claimed in claim 1, characterized in that, The electromagnetic shielding body includes a metal shielding layer, which is disposed on the surface of the plastic substrate.

3. The housing as described in claim 2, characterized in that, The electromagnetic shielding body also includes an anti-corrosion layer, which is disposed on the surface of the metal shielding layer.

4. The housing as claimed in claim 1, characterized in that, The electromagnetic shielding body includes carbon fiber cloth, and the plastic matrix is ​​filled in the carbon fiber cloth to form a carbon fiber plastic composite layer.

5. The housing as described in claim 4, characterized in that, The electromagnetic shielding body also includes a metal mesh, which is stacked with the carbon fiber plastic composite layer.

6. The housing as claimed in claim 5, characterized in that, At least one layer of the carbon fiber-plastic composite layer is provided on both opposite sides of the metal mesh.

7. The housing as claimed in claim 1, characterized in that, The electromagnetic shield and the plastic matrix are integrally injection molded.

8. The housing as claimed in claim 7, characterized in that, The electromagnetic shielding body comprises metal fibers and / or carbon fibers.

9. The housing as claimed in any one of claims 1 to 8, characterized in that, The housing includes: A bottom shell, the bottom shell comprising the plastic substrate and the electromagnetic shielding body; The upper cover is disposed on the bottom shell, and the upper cover includes the plastic substrate and the electromagnetic shield.

10. A powertrain, characterized in that, Includes a powertrain housing; the powertrain housing is a housing as described in any one of claims 1 to 9.

11. A vehicle, characterized in that, Includes the powertrain as described in claim 10.

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