Motor controller and vehicle

Abstract

The utility model discloses a motor controller and a vehicle, the motor controller comprises a housing, an accommodating cavity is formed in the housing, and a branching module and a power module are arranged in the accommodating cavity; the cover plate is suitable for being connected with the shell and sealing the containing cavity, a capacitor assembly is arranged in the cover plate, and the capacitor assembly is communicated with the branching module and the power module to form a current path and is suitable for filtering electromagnetic pulses in the current path; wherein the branching module is suitable for communicating the capacitor assembly with an external circuit and introducing current into the capacitor assembly, and the power module is suitable for introducing the current filtered by the capacitor assembly into an external motor and controlling the motor to operate. The capacitor is integrated on the cover plate, the capacitor does not need to be independently arranged in the shell, the filtering function is achieved, meanwhile, capacitor assembling steps are reduced, and the size of the shell is reduced.

Description

Technical Field

[0001] The utility model relates to the field of motor controllers, in particular to a motor controller and a vehicle. Background Art

[0002] In the prior art, the upper cover of the motor controller housing in electric vehicles is an aluminum alloy die-casting with high density and mass. As the motor works, the upper cover of the motor controller vibrates and generates noise. Therefore, a thin film capacitor for filtering spike pulses is provided in the motor controller. After the thin film capacitor is folded, it is separately glued and plastic-sealed in the motor controller housing, occupying the housing space. In addition, the capacitor is separately glued and plastic-sealed, which reduces assembly efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a motor controller. This application integrates the capacitor into the cover, eliminating the need for a separate capacitor in the housing. This achieves filtering while reducing the number of capacitor assembly steps and the size of the housing.

[0004] The utility model also provides a vehicle having the motor controller.

[0005] According to the utility model, the motor controller includes a shell, a accommodating cavity is formed in the shell, and a branching module and a power module are arranged in the accommodating cavity; a cover plate, which is suitable for being connected to the shell and closing the accommodating cavity, and a capacitor assembly is arranged in the cover plate, and the capacitor assembly is respectively connected with the branching module and the power module to form a current path and is suitable for filtering electromagnetic pulses in the current path; wherein the branching module is suitable for connecting the capacitor assembly with an external circuit and introducing current into the capacitor assembly, and the power module is suitable for introducing the current filtered by the capacitor assembly into an external motor and controlling the operation of the motor.

[0006] According to the motor controller of the present invention, the capacitor assembly is integrated into the cover plate. After the cover plate is connected to the shell, the capacitor assembly in the cover plate is connected with the branch module and the power module in the shell, so that the flow of current can be realized and the electromagnetic pulses in the current can be filtered to achieve the filtering function. Moreover, by arranging the capacitor assembly in the cover plate, there is no need to set a separate capacitor in the shell, which simplifies the assembly steps, reduces the volume of the shell, and achieves miniaturization.

[0007] According to some embodiments of the present invention, the cover plate includes: a capacitor layer, the capacitor layer is provided with a thin film capacitor and the thin film capacitor is constructed as a planar structure, and the capacitor layer is constructed as a plurality of layers arranged at intervals; an injection molding layer, the injection molding layer is arranged between two adjacent capacitor layers and fixes the adjacent capacitor layers; an insulating layer, the insulating layer is coated on both sides of the capacitor layer in the thickness direction and presses the capacitor layer and the injection molding layer in the thickness direction; wherein at least part of the capacitor layer is exposed on the side of the insulating layer facing the accommodating cavity.

[0008] According to some embodiments of the present invention, the motor controller also includes: a connecting member, which is constructed in multiple parts, wherein one end of a part of the connecting members is connected to the branching module, and the other end is connected to the part of the capacitor layer exposed in the accommodating cavity, and one end of another part of the connecting members is connected to another part of the capacitor layer exposed in the accommodating cavity, and the other end is connected to the power module.

[0009] According to some embodiments of the present invention, the connecting member is configured as a copper sheet.

[0010] According to some embodiments of the present invention, the power module is vertically placed in the accommodating cavity and is provided with a connecting terminal suitable for communicating with the connecting member on a side facing the cover plate.

[0011] According to some embodiments of the present invention, the connecting terminals are constructed in plurality and are spaced apart on a side of the power module facing the cover plate.

[0012] According to some embodiments of the present invention, the capacitor layer and the injection molding layer are fixed by an injection molding process.

[0013] According to some embodiments of the present invention, the insulating layer is made of engineering plastic.

[0014] According to some embodiments of the present invention, an overlapping edge is formed on the outer periphery of the cover plate, which is suitable for overlapping with the shell, and the overlapping edge can be connected to the shell by a fastener.

[0015] The vehicle according to the present invention is briefly described below.

[0016] The vehicle according to the present invention includes the motor controller described in any one of the above embodiments. Since the vehicle according to the present invention includes the motor controller described in any one of the above embodiments, the capacitor of the motor controller in the vehicle according to the present invention is integrated in the cover plate, which simplifies the assembly steps of the shell and the cover plate and reduces the volume of the motor controller shell.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural diagram of a motor controller according to an embodiment of the present utility model;

[0020] Figure 2 This is a structural diagram of a cover plate of a motor controller according to an embodiment of the present utility model;

[0021] Figure 3 It is a cross-sectional view of a cover plate according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] Motor controller 1;

[0024] Housing 11;

[0025] Cover plate 12, capacitor layer 121, injection molding layer 122, insulation layer 123, overlapping edge 124;

[0026] Branching module 13 , power module 14 , and connection terminal 141 . DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the prior art, the upper cover of the motor controller housing in electric vehicles is an aluminum alloy die-casting with high density and mass. As the motor works, the upper cover of the motor controller vibrates and generates noise. Therefore, a thin film capacitor for filtering spike pulses is provided in the motor controller. After the thin film capacitor is folded, it is separately glued and plastic-sealed in the motor controller housing, occupying the housing space. In addition, the capacitor is separately glued and plastic-sealed, which reduces assembly efficiency.

[0029] Reference below Figure 1-Figure 3 A motor controller according to an embodiment of the present invention is described.

[0030] According to the utility model, the motor controller 1 includes a shell 11 and a cover 12. A accommodating cavity is formed in the shell 11, and a branching module 13 and a power module 14 are arranged in the accommodating cavity; the cover 12 is suitable for being connected to the shell 11 and closing the accommodating cavity, and a capacitor assembly is arranged in the cover 12. The capacitor assembly is respectively connected with the branching module 13 and the power module 14 to form a current path and is suitable for filtering electromagnetic pulses in the current path; wherein the branching module 13 is suitable for connecting the capacitor assembly with an external circuit and introducing current into the capacitor assembly, and the power module 14 is suitable for introducing the current filtered by the capacitor assembly into an external motor and controlling the operation of the motor.

[0031] like Figure 1 As shown, the motor controller 1 of the present application includes a shell 11 and a cover plate 12, wherein the cover plate 12 is specifically an upper cover plate 12, and a capacitor component is provided in the upper cover plate 12. By integrating the capacitor component in the upper cover plate 12 to filter the pulse electric wave of the current, there is no need to separately set a thin film capacitor in the shell 11, which is beneficial to saving the internal space of the shell 11, thereby reducing the volume of the motor controller 1; a accommodating cavity is formed in the shell 11, and a branching module 13 and a power module 14 are arranged in the accommodating cavity. The branching module 13 is connected to the external circuit, thereby introducing current into the motor controller 1, and the branching module 13 is connected to the capacitor component in the shell 11, and the capacitor component filters the electromagnetic pulse in the current. Filtering, the capacitor assembly is connected to the power module 14, and the filtered current is introduced into the power module 14. The power module 14 is connected to the motor and controls the operation of the motor. A current path is formed between the branching module 13, the capacitor assembly in the shell 11 and the power module 14 to realize current conduction and filter the electromagnetic pulses in the current. By integrating the capacitor assembly into the cover 12, there is no need for a separate plastic-sealed capacitor in the shell 11. After the cover 12 is connected to the shell 11, the capacitor assembly in the cover 12 is connected to the branching module 13 and the power module 14 in the shell 11, which simplifies the assembly steps. Since there is no capacitor in the shell 11, it is beneficial to reduce the volume of the shell 11 and achieve miniaturization.

[0032] According to the motor controller 1 of the present invention, the capacitor component is integrated into the cover plate 12. After the cover plate 12 is connected to the shell 11, the capacitor component in the cover plate 12 is connected with the branching module 13 and the power module 14 in the shell 11, so that the flow of current can be realized and the electromagnetic pulses in the current can be filtered to achieve a filtering function. Moreover, by arranging the capacitor component in the cover plate 12, there is no need to set a separate capacitor in the shell 11, which simplifies the assembly steps, reduces the volume of the shell 11, and achieves miniaturization.

[0033] According to some embodiments of the present invention, the cover plate 12 includes a capacitor layer 121, an injection molding layer 122 and an insulating layer 123. The capacitor layer 121 is provided with a thin film capacitor and the thin film capacitor is constructed as a planar structure. The capacitor layer 121 is constructed as a multi-layer structure arranged at intervals; the injection molding layer 122 is arranged between two adjacent capacitor layers 121 and fixes the adjacent capacitor layers 121; the insulating layer 123 is coated on both sides of the capacitor layer 121 in the thickness direction and presses the capacitor layer 121 and the injection molding layer 122 in the thickness direction; wherein at least part of the capacitor layer 121 is exposed on the side of the insulating layer 123 facing the accommodating cavity.

[0034] like Figure 2 and Figure 3 As shown, the cover plate 12 is constructed as a multi-layer structure, wherein a multi-layer capacitor layer 121 is provided in the cover plate 12, and a thin film capacitor is provided in each capacitor layer 121. The thin film capacitor is constructed as a metal film and stretched into a plane. An injection molding layer 122 is provided between two adjacent capacitor layers 121, and the two sides of the injection molding layer 122 in the thickness direction are respectively adhered to the two capacitor layers 121 to support and fix the capacitor layer 121 to ensure that the shape of the capacitor layer 121 is fixed; an insulating layer 123 is respectively provided in the thickness direction of the two capacitor layers 121 located on the outside, which presses the capacitor layer 121 and the injection molding layer 122 and supports and fixes their shapes, wherein at least part of the capacitor layer 121 is exposed on the side of the insulating layer 123 facing the accommodating cavity to facilitate connection with the branching module 13 and the power module 14.

[0035] According to some embodiments of the present invention, the motor controller 1 also includes a connector, which is constructed in multiple ways, one end of a part of the connector is connected to the branching module 13, and the other end is connected to a part of the capacitor layer 121 exposed in the accommodating cavity, and one end of another part of the connector is connected to another part of the capacitor layer 121 exposed in the accommodating cavity, and the other end is connected to the power module 14.

[0036] Specifically, the connector can be set on the cover plate 12 or in the accommodating cavity. There are multiple connectors, which are used to connect the capacitor assembly with the branch module 13 and the capacitor assembly with the power module 14 respectively. The connector can be constructed as a conductor to achieve current conduction.

[0037] According to some embodiments of the present invention, the connector is constructed as a copper sheet. Since the capacitor in the capacitor layer 121 is constructed as a metal film, constructing the connector as a copper sheet can realize the introduction or extraction of current into or out of the capacitor layer 121.

[0038] According to some embodiments of the present invention, the power module 14 is vertically placed in the accommodating cavity and is provided with a connection terminal 141 suitable for communicating with a connector on a side facing the cover plate 12 .

[0039] like Figure 1As shown, the power module 14 in the shell 11 is placed vertically in the accommodating cavity. Compared with the traditional horizontal structure, since the capacitor assembly is integrated in the cover 12, the power module 14 is placed vertically, which facilitates the connection between the power module 14 and the capacitor layer 121 in the cover 12, and is beneficial to reducing the space of the shell 11 occupied by the power module 14 and reducing the volume of the shell 11.

[0040] According to some embodiments of the present invention, the connection terminals 141 are constructed in plurality and are spaced apart on a side of the power module 14 facing the cover 12 .

[0041] like Figure 1 As shown, a plurality of connection terminals 141 are provided on the side of the power module 14 facing the cover plate 12 . The plurality of connection terminals 141 are respectively adapted to be connected to the capacitor layer 121 . The provision of a plurality of connection terminals 141 is beneficial to improving the current flow path and the current flow rate.

[0042] According to some embodiments of the present invention, the capacitor layer 121 and the injection molding layer 122 are fixed by an injection molding process. By fixing the capacitor layer 121 and the injection molding layer 122 by the injection molding process, the structure of the capacitor layer 121 is more stable and deformation is avoided.

[0043] According to some embodiments of the present invention, the insulating layer 123 is made of engineering plastic.

[0044] Specifically, since engineering plastics have a low density, half that of aluminum alloy, and a low price, they are beneficial for reducing the weight of the motor controller 1 and lowering costs. At the same time, engineering plastics have lower vibration noise, improving the noise reduction performance of the motor controller 1 .

[0045] According to some embodiments of the present invention, an overlapping edge 124 suitable for overlapping with the housing 11 is formed on the outer periphery of the cover plate 12 , and the overlapping edge 124 can be connected to the housing 11 by fasteners.

[0046] like Figure 1 and Figure 2 As shown, the cover 12 is connected to the shell 11 through the overlapping edge 124. The overlapping edge 124 is tightly connected to the shell 11 to ensure the sealing performance of the accommodating cavity. The thickness of the overlapping edge 124 is small, which makes it convenient for fasteners to pass through the overlapping edge 124 and connect to the shell 11.

[0047] The vehicle according to the present invention is briefly described below.

[0048] The vehicle according to the present invention includes the motor controller 1 described in any one of the above-mentioned embodiments. Since the vehicle according to the present invention includes the motor controller 1 described in any one of the above-mentioned embodiments, the capacitor of the motor controller 1 in the vehicle according to the present invention is integrated in the cover 12, which simplifies the assembly steps of the shell 11 and the cover 12 and reduces the volume of the shell 11 of the motor controller 1.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0050] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0051] In the description of the present invention, “plurality” means two or more.

[0052] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0053] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0054] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor controller, characterized in that: include: A housing, wherein a housing cavity is formed in the housing, and a branching module and a power module are arranged in the housing cavity; A cover plate, the cover plate being adapted to be connected to the housing and to close the accommodating cavity, the cover plate being provided with a capacitor assembly, the capacitor assembly being respectively connected to the branching module and the power module to form a current path and being adapted to filter electromagnetic pulses in the current path; in The branching module is suitable for connecting the capacitor assembly to an external circuit and introducing current into the capacitor assembly, and the power module is suitable for introducing the current filtered by the capacitor assembly into an external motor and controlling the operation of the motor.

2. The motor controller according to claim 1, characterized in that: The cover plate comprises: A capacitor layer, wherein the capacitor layer is provided with a thin film capacitor and the thin film capacitor is constructed as a planar structure, and the capacitor layer is constructed as multiple layers arranged at intervals; An injection molding layer, the injection molding layer is arranged between two adjacent capacitor layers and fixes the adjacent capacitor layers; An insulating layer, wherein the insulating layer covers the two outer capacitor layers in the thickness direction and presses the capacitor layer and the injection molding layer in the thickness direction; wherein At least a portion of the capacitor layer is exposed on a side of the insulating layer facing the accommodating cavity.

3. The motor controller according to claim 2, characterized in that: Also includes: A connector, wherein the connector is constructed in multiple configurations, wherein one end of a portion of the connectors is connected to the branching module, and the other end is connected to a portion of the capacitor layer exposed in the accommodating cavity, and another end of the connectors of another portion is connected to another portion of the capacitor layer exposed in the accommodating cavity, and the other end is connected to the power module.

4. The motor controller according to claim 3, characterized in that: The connecting element is configured as a copper sheet.

5. The motor controller according to claim 3, characterized in that: The power module is vertically placed in the accommodating cavity and is provided with a connecting terminal suitable for communicating with the connecting member on a side facing the cover plate.

6. The motor controller according to claim 5, characterized in that: The connection terminals are multiple and are arranged at intervals on a side of the power module facing the cover plate.

7. The motor controller according to claim 2, characterized in that: The capacitor layer and the injection molding layer are fixed by an injection molding process.

8. The motor controller according to claim 2, characterized in that: The material of the insulating layer is engineering plastic.

9. The motor controller according to claim 1, characterized in that: An overlapping edge suitable for overlapping with the shell is formed on the outer periphery of the cover plate, and the overlapping edge can be connected to the shell by a fastener.

10. A vehicle, characterized in that: The motor controller comprises the motor controller as claimed in any one of claims 1 to 9.

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