Filter

Abstract

The utility model discloses a filter which comprises the components of a PCB which comprises an upper surface and a lower surface; the capacitor part is arranged on the upper surface of the PCB and is in welded connection with the PCB; a filter core; the filter core is arranged in the first shell, and the first shell is arranged on the lower surface of the PCB and is connected with the PCB through a bolt; the positive electrode copper bar penetrates through the filter core and is connected with the PCB through a bolt; and the cathode copper bar passes through the filter core and is connected with the PCB through a bolt. According to the utility model, all the components in the filter can be fixedly connected through the nuts and the copper bars instead of injection molding of an integrated piece, so that the heat dissipation performance of the filter is improved, and the filter capacitance performance of the filter core is not limited by heat dissipation conditions any more.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to a filter. Background Art

[0002] In the prior art, for the assembly of the filter, XY capacitors (X capacitors: capacitors used between the live wire and the neutral wire; Y capacitors: capacitors used between the live wire and the ground wire, and between the neutral wire and the ground wire), PCB (Printed Circuit Board) boards, filter cores and other components are usually electrically connected through copper busbars. These components and the copper busbars are then placed in a mold and are injection-molded together to achieve fixed connection of these components.

[0003] Since the XY capacitor and filter core generate heat during operation, and plastic has poor heat conduction properties, a large amount of heat accumulates inside the plastic housing and is difficult to dissipate. This undissipated heat affects the efficiency of the XY capacitor and filter core. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of poor heat dissipation performance of injection-molded filter components in the prior art. This utility model provides a filter that can achieve fixed connection of various components in the filter through nuts and copper bars, instead of using injection-molded components to achieve fixed connection of various components, thereby improving the heat dissipation performance of the filter and making the performance of the filter capacitor of the filter core no longer restricted by heat dissipation conditions.

[0005] In order to solve the above technical problems, the embodiment of the present utility model discloses a filter, comprising:

[0006] A PCB board, the PCB board comprising an upper surface and a lower surface;

[0007] a capacitor portion, the capacitor portion being disposed on the upper surface of the PCB and being welded to the PCB;

[0008] filter core;

[0009] a first housing, wherein the filter core is disposed in the first housing, the first housing being disposed on the lower surface of the PCB and connected to the PCB via bolts;

[0010] A positive copper busbar, which passes through the filter core and is connected to the PCB board via bolts;

[0011] The negative copper busbar passes through the filter core and is connected to the PCB board via bolts.

[0012] According to the above technical solution, since the filter core is arranged on the first housing, the first housing is fixedly connected to the PCB board by bolts, that is, the filter core is fixedly connected to the PCB board by bolts. In addition, the capacitor part is fixedly connected to the PCB board by welding; the positive copper bar is fixedly connected to the PCB board by bolts; and the negative copper bar is fixedly connected to the PCB board by bolts. Therefore, in this technical solution, the fixed connection between the capacitor part and the PCB board, the fixed connection between the filter core and the PCB board, the fixed connection between the positive copper bar and the PCB board, and the fixed connection between the negative copper bar and the PCB board are no longer achieved by injection molding one-piece parts, thereby reducing the use of plastic parts in the filter, improving the heat dissipation performance of the filter, and making the filter capacitor performance of the filter core no longer subject to heat dissipation conditions.

[0013] According to another specific embodiment of the present invention, the filter includes a second shell, the shape of the second shell matches the shape of the filter core, the second shell includes a accommodating cavity, the filter core is arranged in the accommodating cavity, the filter core is connected to the second shell, and the second shell is arranged in the first shell and connected to the first shell.

[0014] Using the above technical solution, since the filter core is relatively fragile, a second shell that matches the shape of the filter core is set up, and the filter core is placed in the second shell to avoid damage to the filter core due to bumps during the operation of the filter, which may affect the performance of the filter core.

[0015] According to another specific embodiment of the present invention, the filter includes a first viscose and a second viscose, the second shell includes a first shell cover and a first shell body, the first shell body includes the accommodating cavity, along the first direction, the first shell cover, the first viscose, the filter core, the second viscose and the first shell body are connected in sequence, along the first direction, the first shell body includes a first bottom wall, and the second viscose is arranged on the first bottom wall.

[0016] By adopting the above technical solution, the first shell cover, the filter core and the first shell body are fixedly connected by providing the first adhesive and the second adhesive, that is, the filter core and the second shell body are fixedly connected.

[0017] According to another specific embodiment of the present invention, the filter includes a plurality of third adhesives, along the second direction, the first shell includes a second bottom wall, along the third direction, the first shell includes a first side wall, the plurality of third adhesives are arranged between the second bottom wall and the first side wall, the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction.

[0018] By adopting the above technical solution, in the second direction, the second bottom wall and the first side wall are fixedly connected by providing the third adhesive, that is, the first shell and the second shell are fixedly connected.

[0019] According to another specific embodiment of the present invention, the first shell includes a snap-fit ​​portion, which is respectively provided at two ends of the first shell along the first direction, and the snap-fit ​​portion is snap-connected with the second shell.

[0020] According to another specific embodiment of the present utility model, the filter includes a first copper busbar, which includes a first part, a second part and a third part connected in sequence, the first part and the third part extend in a first direction respectively, the second part extends in a second direction, the first part is arranged between the first shell and the PCB board, the PCB board, the first part and the first shell are connected by bolts, and the third part is connected to the positive copper busbar by bolts.

[0021] The above technical solution achieves a fixed connection between the PCB and the first housing (i.e., the fixed connection between the PCB and the filter core), and also between the PCB and the positive copper busbar, by providing a first copper busbar. Compared to the prior art method of achieving a fixed connection between the PCB, the filter core, and the positive copper busbar through injection molding of a single piece, this technical solution reduces the use of plastic parts in the filter, improves the filter's heat dissipation performance, and eliminates the filter core's filter capacitor performance from being constrained by heat dissipation conditions.

[0022] According to another specific embodiment of the present utility model, the filter includes a second copper bar, the second copper bar includes a fourth part, a fifth part and a sixth part connected in sequence, the fourth part and the sixth part extend in the first direction respectively, the fifth part extends in the second direction, the fourth part is arranged between the first shell and the PCB board, the PCB board, the fourth part and the first shell are connected by bolts, and the sixth part is connected to the negative copper bar by bolts.

[0023] The above technical solution achieves a fixed connection between the PCB and the first housing (i.e., the fixed connection between the PCB and the filter core), and also between the PCB and the negative copper busbar, by providing a second copper busbar. Compared to the prior art method of achieving a fixed connection between the PCB, the filter core, and the negative copper busbar through injection molding of a single piece, this technical solution reduces the use of plastic components in the filter, improves the filter's heat dissipation performance, and eliminates the filter core's filter capacitor performance from being constrained by heat dissipation conditions.

[0024] According to another specific embodiment of the present invention, the first shell includes a positioning portion, and along the third direction, the positioning portion is respectively provided at both ends of the first shell, and the positioning portion is used to connect with the shell of an external motor controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shows the stereoscopic view of the filter of the embodiment of the utility model Figure 1 .

[0026] Figure 2 Shows the stereoscopic view of the filter of the embodiment of the utility model Figure 2 .

[0027] Figure 3 An exploded view of a filter according to an embodiment of the present invention is shown.

[0028] Figure 4 A cross-sectional view of a filter according to an embodiment of the present invention is shown.

[0029] Figure 5 Shows the stereoscopic view of the first shell of the embodiment of the present utility model Figure 1 .

[0030] Figure 6 Shows the stereoscopic view of the first shell of the embodiment of the present utility model Figure 2 .

[0031] Description of Reference Numerals

[0032] PCB board 10; upper surface 11; lower surface 12; fourth through hole 13;

[0033] Capacitor unit 20; XY capacitor 21;

[0034] Filter module 30;

[0035] Filter core 31;

[0036] First housing 32; second bottom wall 321; buckle portion 322; fixing portion 323; second bushing 324; positioning portion 325;

[0037] Second shell 33; accommodating cavity 331; first shell cover 332; first shell body 333;

[0038] Positive copper busbar 40; first through hole 41;

[0039] Negative copper busbar 50; second through hole 51;

[0040] Bolt 60;

[0041] Adhesive portion 70; first adhesive 71; second adhesive 72; third adhesive 73;

[0042] Copper busbar 80;

[0043] First copper bus 81; first portion 811; third through hole 8111; second portion 812; third portion 813; fifth through hole 8131;

[0044] Second copper busbar 82; fourth portion 821; sixth through hole 8211; fifth portion 822; sixth portion 823; seventh through hole 8231;

[0045] First bushing 83 . DETAILED DESCRIPTION

[0046] The following is an explanation of the implementation of the present invention by means of specific specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide an in-depth understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0047] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0048] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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. Therefore, they cannot be understood as a limitation on the utility model.

[0049] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0050] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0052] refer to Figures 1 to 4 The present application provides a filter, including a PCB board 10, a capacitor unit 20, a filter module 30, a positive copper busbar 40, a negative copper busbar 50 and eight bolts 60.

[0053] like Figure 1 and Figure 2 As shown, the PCB 10 includes an upper surface 11 and a lower surface 12. The capacitor unit 20 includes ten XY capacitors 21, each of which is a rectangular parallelepiped. The ten XY capacitors 21 are disposed on the upper surface 11 of the PCB 10 and are connected to the PCB 10 by welding.

[0054] like Figure 3 and Figure 4 As shown, the filter module 30 includes a filter core 31, a first housing 32, and a second housing 33. The filter core 31 is a hollow cylinder, and the shape of the second housing 33 matches the shape of the filter core 31, that is, the second housing 33 is also a hollow cylinder. The second housing 33 includes a receiving cavity 331, in which the filter core 31 is located. The filter core 31 is connected to the second housing 33. The second housing 33 is located within the first housing 32 and is connected to the first housing 32. The first housing 32 is located on the lower surface 12 of the PCB board 10 and is connected to the PCB board 10 via bolts 60.

[0055] like Figure 3 and Figure 4 As shown, the positive copper busbar 40 is rectangular, passes through the filter core 31, and is connected to the PCB board 10 via bolts 60. Along the first direction X, a first through-hole 41 is defined at each end of the positive copper busbar 40, and the bolts 60 are connected to the first through-holes 41. The negative copper busbar 50 is rectangular, passes through the filter core 31, and is connected to the PCB board 10 via bolts 60. Along the first direction X, a second through-hole 51 is defined at each end of the negative copper busbar 50, and the bolts 60 are connected to the second through-holes 51.

[0056] According to the above technical solution, since the filter core 31 is arranged on the first housing 32, the first housing 32 is fixedly connected to the PCB board 10 by the bolt 60, that is, the filter core 31 is fixedly connected to the PCB board 10 by the bolt 60. In addition, the capacitor part 20 is fixedly connected to the PCB board 10 by welding; the positive copper bar 40 is fixedly connected to the PCB board 10 by the bolt 60; and the negative copper bar 50 is fixedly connected to the PCB board 10 by the bolt 60. Therefore, in the present technical solution, the fixed connection between the capacitor part 20 and the PCB board 10, the fixed connection between the filter core 31 and the PCB board 10, the fixed connection between the positive copper bar 40 and the PCB board 10, and the fixed connection between the negative copper bar 50 and the PCB board 10 are no longer achieved by injection molding an integral part, thereby reducing the use of plastic parts in the filter, improving the heat dissipation performance of the filter, and making the filter capacitor performance of the filter core 31 no longer subject to heat dissipation conditions.

[0057] Since the filter core 31 is relatively fragile, a second shell 33 matching the shape of the filter core 31 is provided, and the filter core 31 is placed in the second shell 33 to avoid damage to the filter core 31 due to collision during the operation of the filter, thereby affecting the performance of the filter core 31.

[0058] It should be noted that the embodiment of the present application does not impose any specific restrictions on the number of XY capacitors 21. For example, in other possible implementations, the number of XY capacitors 21 can be eight, nine, eleven, and so on. The embodiment of the present application does not impose any specific restrictions on the number of bolts 60. For example, in other possible implementations, the number of bolts 60 can be nine, ten, eleven, and so on. The embodiment of the present application does not impose any specific restrictions on the number of first through holes 41 provided in the positive copper busbar 40. For example, in other possible implementations, the number of first through holes 41 can be three, four, and so on. The embodiment of the present application does not impose any specific restrictions on the number of second through holes 51 provided in the negative copper busbar 50. For example, in other possible implementations, the number of second through holes 51 can be three, four, and so on.

[0059] It should be noted that the embodiment of the present application does not impose any specific restrictions on the shape of the XY capacitor 21. For example, in other possible implementations, the shape of the XY capacitor 21 can be a cylinder, a cube, etc. The embodiment of the present application does not impose any specific restrictions on the shapes of the positive copper busbar 40 and the negative copper busbar 50. For example, in other possible implementations, the shapes of the positive copper busbar 40 and the negative copper busbar 50 can be curved, irregular, etc. The shapes of the positive copper busbar 40 and the negative copper busbar 50 are determined by the specific filter structure.

[0060] In some possible implementations, reference Figure 3 and Figure 4The filter includes an adhesive portion 70, which includes a first adhesive 71 and a second adhesive 72. The second housing 33 includes a first housing cover 332 and a first housing body 333. The first housing body 333 includes a receiving cavity 331. Along the first direction X, the first housing cover 332, the first adhesive 71, the filter core 31, the second adhesive 72, and the first housing body 333 are sequentially connected. Along the first direction X, the first housing body 333 includes a first bottom wall (not shown). The second adhesive 72 is provided on the first bottom wall. The shapes of the first adhesive 71 and the second adhesive 72 respectively match the shapes of the first bottom wall.

[0061] By adopting the above technical solution, the first shell cover 332 , the filter core 31 and the first shell body 333 are fixedly connected by providing the first adhesive 71 and the second adhesive 72 , that is, the filter core 31 and the second shell body 33 are fixedly connected.

[0062] In some possible implementations, reference Figure 3 and Figure 5 The adhesive portion 70 includes five third adhesive strips 73, each of which is circular. Along the second direction Y, the first housing 32 includes a second bottom wall 321. Along the third direction Z, the first housing 333 includes a first side wall (not shown). The five third adhesive strips 73 are disposed between the second bottom wall 321 and the first side wall. The second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to the first direction X.

[0063] By adopting the above technical solution, in the second direction Y, the second bottom wall 321 and the first side wall are fixedly connected by providing the third adhesive 73 , that is, the first shell 32 and the second shell 33 are fixedly connected.

[0064] It should be noted that the embodiment of the present application does not impose any specific limitation on the number of third adhesives 73. For example, in other possible embodiments, the number of third adhesives 73 can be six, seven, eight, etc. The embodiment of the present application does not impose any specific limitation on the shape of the third adhesives 73. For example, in other possible embodiments, the shape of the third adhesives 73 can be square, triangular, etc.

[0065] In some possible implementations, reference Figure 3 and Figure 5 The first shell 32 includes two snap-fitting portions 322 . Along the first direction X, the two snap-fitting portions 322 are respectively provided at both ends of the first shell 32 . The snap-fitting portions 322 are snap-fitted to the second shell 33 .

[0066] In some possible implementations, reference Figure 3 and Figure 4The filter includes a copper busbar portion 80, which includes two first copper busbars 81, two second copper busbars 82, and four first bushings 83. Each first copper busbar 81 includes a first portion 811, a second portion 812, and a third portion 813 connected in sequence. The first portion 811 and the third portion 813 extend along a first direction X, and the second portion 812 extends along a second direction Y. That is, the second portion 812 is perpendicular to the first portion 811 and the third portion 813.

[0067] The first portion 811 is disposed between the first housing 32 and the PCB 10. The first portion 811 includes a third through-hole 8111 extending along the second direction Y through the first portion 811. The PCB 10 includes four fourth through-holes 13 extending along the second direction Y through the PCB 10. Bolts 60 are sequentially inserted through the fourth through-holes 13 and the third through-holes 8111 before being inserted into the first housing 32, thereby securing the PCB 10, the first portion 811, and the first housing 32. The third portion 813 includes a fifth through-hole 8131 extending along the second direction Y through the third portion 813. Bolts 60 are sequentially inserted through the fifth through-hole 8131 and the first through-hole 41 of the positive copper busbar 40, securing the third portion 813 to the positive copper busbar 40. Each first bushing 83 is disposed at the end of each bolt 60.

[0068] Adopt above-mentioned technical scheme, by setting the first copper bar 81, realize the fixed connection (i.e. the fixed connection of PCB board 10 and filter core 31) of PCB board 10 and the first housing 32, the fixed connection of PCB board 10 and positive copper bar 40. Compared with the mode that realizes the fixed connection of PCB board 10 and filter core 31, positive copper bar 40 by injection molding one-piece in the prior art, this technical scheme reduces the use of plastic parts in filter, improves the heat dissipation performance of filter, and makes the filter capacitor performance of filter core 31 no longer subject to heat dissipation conditions. Because the third portion 813 and positive copper bar 40 are both plate-shaped, the first bushing 83 is set to be located at the end of bolt 60, so that bolt 60 can be fixedly connected with the third portion 813 and positive copper bar 40.

[0069] It should be noted that the embodiment of the present application does not impose any specific limitation on the number of fourth through holes 13 included in the PCB board 10. For example, in other possible implementations, the number of fourth through holes 13 included in the PCB board 10 can be five, six, seven, etc.

[0070] In some possible implementations, reference Figure 3 and Figure 4The second copper busbar 82 includes a fourth portion 821, a fifth portion 822 and a sixth portion 823 connected in sequence. The fourth portion 821 and the sixth portion 823 extend along the first direction X respectively, and the fifth portion 822 extends along the second direction Y, that is, the fifth portion 822 is perpendicular to the fourth portion 821 and the sixth portion 823 respectively.

[0071] The fourth portion 821 is disposed between the first housing 32 and the PCB board 10. The fourth portion 821 includes a sixth through-hole 8211 extending along the second direction Y through the fourth portion 821. A bolt 60 sequentially passes through the fourth through-hole 13 and the sixth through-hole 8211 before being inserted into the first housing 32, thereby securing the PCB board 10, the fourth portion 821, and the first housing 32. The sixth portion 823 includes a seventh through-hole 8231 extending along the second direction Y through the sixth portion 823. The bolt 60 sequentially passes through the seventh through-hole 8231 and the second through-hole 51 of the negative copper busbar 50, securing the sixth portion 823 to the negative copper busbar 50. Each first bushing 83 is disposed at the end of each bolt 60.

[0072] Adopt above-mentioned technical scheme, by setting the second copper bar 82, realize the fixed connection (i.e. the fixed connection of PCB board 10 and filter core 31) of PCB board 10 and first housing 32, the fixed connection of PCB board 10 and negative copper bar 50.Compared with the mode that realizes the fixed connection of PCB board 10 and filter core 31, negative copper bar 50 by injection molding one-piece in the prior art, this technical scheme reduces the use of plastic parts in filter, improves the heat dissipation performance of filter, and makes the filter capacitor performance of filter core 31 no longer subject to heat dissipation condition.Because the sixth portion 823 and negative copper bar 50 are both plate-shaped, the first bushing 83 is set to be located at the end of bolt 60, so that bolt 60 can be fixedly connected with the sixth portion 823 and negative copper bar 50.

[0073] In some possible implementations, reference Figure 4 and Figure 6 The first housing 32 includes four fixing portions 323 and four second bushings 324. The second bushings 324 are made of copper. The fixing portions 323 have an open hole that matches the shape of the second bushings 324. The four fixing portions 323 and the four second bushings 324 are arranged in correspondence with each other. Each second bushing 324 is disposed within a corresponding fixing portion 323, and the bolt 60 is disposed in the second bushing 324. Along the first direction X, two fixing portions 323 and two second bushings 324 are disposed at one end of the first housing 32, and another two fixing portions 323 and two second bushings 324 are disposed at the other end of the first housing 32.

[0074] With the above technical solution, since the fixing portion 323 of the first housing 32 is an open hole and lacks a threaded structure, a corresponding second bushing 324 is required to be fixedly connected to the bolt 60 via the second bushing 324. The second bushing 324 is made of copper, thereby enabling electrical connection between the PCB board 10 and the copper busbar 80.

[0075] It should be noted that the embodiment of the present application does not impose any specific limitation on the number of fixing portions 323 and second bushings 324. For example, in other possible implementations, the number of fixing portions 323 and second bushings 324 may be five, six, seven, etc., respectively.

[0076] In some possible implementations, reference Figure 6 The first shell 32 includes a positioning portion 325. Along the third direction Z, the positioning portions 325 are respectively provided at both ends of the first shell 32. The positioning portions 325 are used to connect with a shell (not shown in the figure) of an external motor controller (not shown in the figure).

[0077] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A filter, characterized in that: The filter comprises: A PCB board, the PCB board comprising an upper surface and a lower surface; a capacitor portion, the capacitor portion being disposed on the upper surface of the PCB and being welded to the PCB; filter core; a first housing, wherein the filter core is disposed in the first housing, the first housing being disposed on the lower surface of the PCB and connected to the PCB via bolts; A positive copper busbar, which passes through the filter core and is connected to the PCB board via bolts; A negative copper busbar passes through the filter core and is connected to the PCB board via bolts.

2. The filter according to claim 1, wherein The filter includes a second shell, the shape of which matches the shape of the filter core. The second shell includes a accommodating cavity, the filter core is arranged in the accommodating cavity, the filter core is connected to the second shell, and the second shell is arranged in the first shell and connected to the first shell.

3. The filter according to claim 2, wherein The filter includes a first adhesive and a second adhesive, the second shell includes a first shell cover and a first shell body, the first shell body includes the accommodating cavity, along the first direction, the first shell cover, the first adhesive, the filter core, the second adhesive and the first shell body are connected in sequence, along the first direction, the first shell body includes a first bottom wall, and the second adhesive is arranged on the first bottom wall.

4. The filter according to claim 3, wherein The filter includes a plurality of third adhesives. Along the second direction, the first shell includes a second bottom wall. Along the third direction, the first shell includes a first side wall. The plurality of third adhesives are arranged between the second bottom wall and the first side wall. The second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction.

5. The filter according to claim 2, wherein The first shell includes a buckle portion. Along a first direction, the buckle portions are respectively provided at two ends of the first shell. The buckle portions are buckled and connected to the second shell.

6. The filter according to claim 1, wherein The filter includes a first copper busbar, which includes a first part, a second part, and a third part connected in sequence. The first part and the third part extend along a first direction respectively, and the second part extends along a second direction. The first part is arranged between the first shell and the PCB board. The PCB board, the first part, and the first shell are connected by bolts. The third part is connected to the positive copper busbar by bolts.

7. The filter according to claim 1, wherein The filter includes a second copper busbar, which includes a fourth portion, a fifth portion, and a sixth portion connected in sequence. The fourth portion and the sixth portion extend in a first direction respectively, and the fifth portion extends in a second direction. The fourth portion is arranged between the first shell and the PCB board. The PCB board, the fourth portion, and the first shell are connected by bolts. The sixth portion is connected to the negative copper busbar by bolts.

8. The filter according to claim 1, wherein The first shell includes a positioning portion. Along the third direction, the positioning portions are respectively arranged at two ends of the first shell. The positioning portions are used to connect with a shell of an external motor controller.

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