Filtering capacitor, method for series connection thereof, filtering capacitor assembly, filter, inverter, electric drive assembly and vehicle

Abstract

The application belongs to the technical field of vehicles, and particularly relates to a filter capacitor, a serialization method thereof, a filter capacitor assembly, a filter, an inverter and a vehicle. The filter capacitor is wound by a composite film, the composite film comprises at least one positive electrode layer, at least one negative electrode layer and a plurality of insulating layers, the at least one positive electrode layer and the at least one negative electrode layer are staggered distributed along the thickness direction, and the positive electrode layer and the negative electrode layer are partially stacked along the length direction, and the plurality of insulating layers are distributed on at least one side of the at least one positive electrode layer and the at least one negative electrode layer along the thickness direction. By adopting the bare core capacitor directly wound by the composite film, the plastic shell and the plastic shell inner potting are cancelled, the design freedom of the filter capacitor is increased, the expansion and change of the filter capacitor capacity and voltage resistance value can be realized, and thus the serialization of the filter capacitor capacity and voltage resistance value is realized.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a filter capacitor, a serialization method thereof, a filter capacitor assembly, a filter, an inverter, an electric drive assembly, and a vehicle. Background Technology

[0002] A filter is a frequency-selective device that allows specific frequency components of a signal to pass through while significantly attenuating other frequency components, thereby eliminating interference noise. Filters are a crucial component of automotive inverters, their function being to filter out the AC component from the input DC current, reduce the input voltage ripple coefficient, and suppress noise propagation. In related technologies, the filter capacitors in filters are typically leaded plastic-encapsulated structures; once the design is finalized, their capacitance, voltage rating, and number of capacitors are fixed and difficult to expand or change. Summary of the Invention

[0003] The purpose of this invention is to provide a filter capacitor, a serialization method thereof, a filter capacitor assembly, a filter, an inverter, an electric drive assembly, and a vehicle, thereby increasing the design freedom of the filter capacitor, enabling the expansion and modification of the capacitance and withstand voltage values ​​of the filter capacitor, and realizing the serialization of the capacitance and withstand voltage values ​​of the filter capacitor.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The filter capacitor is formed by winding a composite film, the composite film including at least one positive electrode layer, at least one negative electrode layer and several insulating layers, the at least one positive electrode layer and at least one negative electrode layer are staggered along the thickness direction, and the positive electrode layer and the negative electrode layer are partially stacked along the thickness direction, and the several insulating layers are distributed on at least one side of the at least one positive electrode layer and at least one negative electrode layer along the thickness direction.

[0006] The serialization method for filter capacitors, applied to filter capacitors as described in any of the above schemes, includes: adjusting the number of positive electrode layers, negative electrode layers, and insulating layers and / or adjusting the length of the filter capacitor and the stacking length of the positive electrode layers and negative electrode layers to adjust the capacitance value of the filter capacitor, so as to obtain a series of filter capacitors with different capacitance values.

[0007] As a preferred technical solution for the serialization method of filter capacitors, when the volume of the filter capacitor is fixed, the capacitance value of the filter capacitor is adjusted by adjusting the number of positive electrode layers, negative electrode layers and insulating layers; when the number of positive electrode layers, negative electrode layers and insulating layers is fixed, the capacitance value of the filter capacitor is adjusted by adjusting the length of the filter capacitor and the stacking length of the positive electrode layers and negative electrode layers.

[0008] The serialization method for filter capacitors, applied to filter capacitors as described in any of the above schemes, includes: adjusting the side lengths of the positive and negative electrode layers to adjust the withstand voltage of the filter capacitor, so as to obtain a series of filter capacitors with different withstand voltage values.

[0009] The filter capacitor assembly includes the filter capacitor as described in any of the above embodiments, and further includes a positive terminal busbar, a negative terminal busbar, and a ground busbar. The filter capacitor includes an X capacitor, a first Y capacitor, and a second Y capacitor. The positive terminal busbar is connected to one end of the X capacitor and one end of the first Y capacitor. The negative terminal busbar is connected to the other end of the X capacitor and one end of the second Y capacitor. The ground busbar is connected to the other end of the first Y capacitor and the other end of the second Y capacitor.

[0010] As a preferred technical solution for the filter capacitor assembly, it also includes an insulating positioning component, which includes a receiving portion and a positioning portion. The receiving portion accommodates the X capacitor, and the positioning portion is positioned and cooperates with the grounding busbar.

[0011] As a preferred technical solution for the filter capacitor assembly, the grounding busbar includes a first grounding busbar and a second grounding busbar. The first grounding busbar is connected to the first Y capacitor, and the second grounding busbar is connected to the second Y capacitor. The positioning part includes a first positioning pin and a second positioning pin. The first grounding busbar is provided with a first positioning pin hole, and the second grounding busbar is provided with a second positioning pin hole. The first positioning pin is inserted into the first positioning pin hole, and the second positioning pin is inserted into the second positioning pin hole.

[0012] As a preferred technical solution for the filter capacitor assembly, the number of the first Y capacitor, the second Y capacitor, the first ground busbar, and the second ground busbar is one, and the number of the first positioning pin and the second positioning pin is multiple. A portion of the first positioning pins are positioned and inserted into the first ground busbar, and another portion of the first positioning pins are reserved. A portion of the second positioning pins are positioned and inserted into the second ground busbar, and another portion of the second positioning pins are reserved.

[0013] Alternatively, there may be two of each of the first Y capacitor, the second Y capacitor, the first grounding busbar, and the second grounding busbar, and multiple of each of the first and second positioning pins. Some of the first positioning pins are positioned and inserted into one of the first grounding busbars, and some of the first positioning pins are positioned and inserted into another of the first grounding busbars; some of the second positioning pins are positioned and inserted into one of the second grounding busbars, and some of the second positioning pins are positioned and inserted into another of the second grounding busbars.

[0014] The filter includes positive and negative busbars and a filter capacitor assembly as described in any of the above schemes, wherein both the positive and negative transition busbars are connected to the positive and negative busbars.

[0015] An inverter includes an inverter housing and a filter as described above, the filter being disposed within the inverter housing.

[0016] Electric drive assembly, including the inverter of the above-mentioned solution.

[0017] Vehicles, including the electric drive assembly described in the above scheme.

[0018] The beneficial effects of this invention are:

[0019] This invention provides a filter capacitor formed by winding a composite film. The composite film includes at least one positive electrode layer, at least one negative electrode layer, and several insulating layers. The at least one positive electrode layer and at least one negative electrode layer are staggered along the thickness direction, and the positive and negative electrode layers are partially stacked along the thickness direction. The several insulating layers are distributed on at least one side of the at least one positive electrode layer and at least one negative electrode layer along the thickness direction. By using a bare-core capacitor directly wound from the composite film, the plastic shell and potting inside the plastic shell are eliminated, increasing the design freedom of the filter capacitor. This allows for the expansion and modification of the capacitance and voltage rating of the filter capacitor, thereby achieving a series of capacitance and voltage ratings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when both the number of positive and negative electrode layers are two.

[0021] Figure 2 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when the number of both the positive electrode layer and the negative electrode layer is four.

[0022] Figure 3 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when the stacking length of the positive electrode layer and the negative electrode layer is d1;

[0023] Figure 4 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when the stacking length of the positive electrode layer and the negative electrode layer is d2;

[0024] Figure 5 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when the length of the insulating layer is e1.

[0025] Figure 6 This is a schematic diagram of the structure of the filter capacitor provided in this embodiment of the invention when the side length of the insulating layer is e2;

[0026] Figure 7This is a first-view structural schematic diagram of the filter capacitor assembly (one first Y capacitor and one second Y capacitor) provided in an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the filter capacitor assembly (one first Y capacitor and one second Y capacitor) provided in an embodiment of the present invention from a second perspective.

[0028] Figure 9 This is a schematic diagram of the structure of the filter capacitor assembly (two of each of the first Y capacitor and the second Y capacitor) provided in an embodiment of the present invention.

[0029] In the picture:

[0030] 101. Positive electrode layer; 1011. Positive electrode non-conductive film; 1012. Positive electrode coating; 102. Negative electrode layer; 1021. Negative electrode non-conductive film; 1022. Negative electrode coating; 103. Insulating layer; 104. Positive electrode plate; 105. Negative electrode plate;

[0031] 11. X capacitor; 12. First Y capacitor; 13. Second Y capacitor; 21. Positive terminal busbar; 211. First clamping part; 22. Negative terminal busbar; 221. Second clamping part; 31. First grounding busbar; 311. First positioning pin hole; 32. Second grounding busbar; 321. Second positioning pin hole; 40. Insulating positioning component; 41. First positioning pin; 42. Second positioning pin. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0036] like Figures 1 to 6 As shown, this invention provides a filter capacitor formed by winding a composite film. The composite film includes at least one positive electrode layer 101, at least one negative electrode layer 102, and several insulating layers 103. The at least one positive electrode layer 101 and at least one negative electrode layer 102 are staggered along the thickness direction, and the positive electrode layer 101 and the negative electrode layer 102 are partially stacked along the thickness direction. The several insulating layers 103 are distributed on at least one side of the at least one positive electrode layer 101 and at least one negative electrode layer 102 along the thickness direction. By using a bare-core capacitor directly wound from a composite film, the plastic shell and the potting inside the plastic shell are eliminated, increasing the design freedom of the filter capacitor. This allows for the expansion and modification of the capacitance and withstand voltage values ​​of the filter capacitor, thereby achieving a series of capacitance and withstand voltage values.

[0037] In this embodiment, the positive electrode layer 101 includes a positive electrode non-conductive light film 1011 and a positive electrode coating 1012 deposited on the negative electrode non-conductive light film 1011, and the negative electrode layer 102 includes a negative electrode non-conductive light film 1021 and a negative electrode coating 1022 deposited on the negative electrode non-conductive light film 1021.

[0038] The present invention also provides a method for serializing filter capacitors. The capacitance value of the filter capacitor can be adjusted by adjusting the number of positive electrode layer 101, negative electrode layer 102 and insulating layer 103 and / or adjusting the length of the filter capacitor and the stacking length of positive electrode layer 101 and negative electrode layer 102, so as to obtain a series of filter capacitors with different capacitance values.

[0039] Specifically, when the volume of the filter capacitor is fixed, the capacitance value of the filter capacitor can be adjusted by adjusting the number of positive electrode layer 101, negative electrode layer 102 and insulating layer 103; when the number of positive electrode layer 101, negative electrode layer 102 and insulating layer 103 is fixed, the capacitance value of the filter capacitor can be adjusted by adjusting the length of the filter capacitor and the stacking length of positive electrode layer 101 and negative electrode layer 102.

[0040] like Figure 1 and Figure 2 As shown, for filter capacitors with capacitance requirements below 38nF, given a fixed capacitor package size (i.e., a fixed volume of the filter capacitor), various capacitance values ​​can be achieved by adjusting the number of positive electrode layer 101, negative electrode layer 102, and insulating layer 103. This allows for a series of small capacitance values; the more positive electrode layer 101 and negative electrode layer 102 present, the larger the capacitance. Figure 2 The number of positive electrode layers 101 and negative electrode layers 102 in the middle is compared to Figure 1 The number of positive electrode layers 101 and negative electrode layers 102 has increased, therefore Figure 2 The capacitance value of the filter capacitor shown is greater than Figure 1 The capacitance value of the filter capacitor is shown. It should be noted that when the number of positive electrode layers 101 and negative electrode layers 102 is small, the unoccupied space of the filter capacitor is filled by the insulating layer 103.

[0041] like Figure 3 and Figure 4 As shown, if the capacitance needs to be increased further when the number of positive electrode layer 101 and negative electrode layer 102 is adjusted to the maximum, i.e., the capacitance value of the filter capacitor needs to be between 38-100nF, various different capacitance values ​​can be achieved by adjusting the length of the filter capacitor and the stacking length of the positive electrode layer 101 and negative electrode layer 102. This realizes a series of large capacitance values. The larger the length of the filter capacitor and the stacking length of the positive electrode layer 101 and negative electrode layer 102, the larger the capacitance value. Figure 4 The length of the intermediate filter capacitor and the stacking length d2 of the positive electrode layer 101 and the negative electrode layer 102 along the length direction are greater than Figure 3 The length of the intermediate filter capacitor and the stacking length d1 of the positive electrode layer 101 and the negative electrode layer 102 along the length direction, therefore Figure 4 The capacitance value of the filter capacitor shown is greater than Figure 3 The capacitance value of the filter capacitor is shown.

[0042] This invention also provides a method for serializing filter capacitors. Adjusting the side lengths of the positive electrode layer 101 and the negative electrode layer 102 can adjust the voltage rating of the filter capacitor, thus obtaining a series of filter capacitors with different voltage ratings. It should be noted that the side length of the positive electrode layer 101 refers to the length of the portion of the positive electrode without conductive film 1011 that is not coated with the positive electrode plating 1012, and the side length of the negative electrode layer 102 refers to the length of the portion of the negative electrode without conductive film 1021 that is not coated with the negative electrode plating 1022.

[0043] like Figure 5 and Figure 6 As shown, by adjusting the side lengths of the positive electrode layer 101 and the negative electrode layer 102, filter capacitors with different withstand voltage values ​​can be obtained, thus achieving a series of withstand voltage values. The larger the side lengths of the positive electrode layer 101 and the negative electrode layer 102, the larger the withstand voltage value. Figure 6 The side length e2 of the positive electrode layer 101 and the negative electrode layer 102 is greater than Figure 5 The edge length e1 of the positive electrode layer 101 and the negative electrode layer 102 is therefore Figure 6 The rated voltage of the filter capacitor shown is greater than... Figure 5 The voltage rating of the filter capacitor is shown.

[0044] Furthermore, the filter capacitor also includes a positive electrode plate 104 and a negative electrode plate 105. The positive electrode plate 104 is disposed at one end of the positive electrode layer 101 along its length, away from the negative electrode layer 102, and the negative electrode plate 105 is disposed at one end of the negative electrode layer 102 along its length, away from the positive electrode layer 101. The positive electrode plate 104 and the negative electrode plate 105 are respectively sprayed onto the ends of the positive electrode layer 101 and the negative electrode layer 102 after the composite film is wound. The positive electrode plate 104 and the negative electrode plate 105 are used to connect to the transfer busbar and / or the grounding busbar.

[0045] like Figures 7 to 9As shown, the present invention also provides a filter capacitor assembly, including the above-mentioned filter capacitor, and further including a transition bus and a ground bus. The filter capacitor includes an X capacitor 11, a first Y capacitor 12, and a second Y capacitor 13. The length of the X capacitor 11 extends along a first direction, and the first Y capacitor 12 and the second Y capacitor 13 are spaced apart along the first direction. The X capacitor 11 is located on one side of the first Y capacitor 12 and the second Y capacitor 13 along a second direction. The lengths of the first Y capacitor 12 and the second Y capacitor 13 extend along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other. The transition bus includes a positive transition bus 21 and a negative transition bus 22. The positive transition bus 21 is connected to one end of the X capacitor 11 along its length and one end of the first Y capacitor 12 along its length. The negative transition bus 22 is connected to the other end of the X capacitor 11 along its length and one end of the second Y capacitor 13 along its length. The ground bus is connected to the other end of the first Y capacitor 12 along its length and the other end of the second Y capacitor 13 along its length. In this embodiment, each grounding busbar includes a first grounding busbar 31 and a second grounding busbar 32. The first grounding busbar 31 is connected to the other end of the first Y capacitor 12 along the length direction, and the second grounding busbar 32 is connected to the other end of the second Y capacitor 13 along the length direction.

[0046] The filter capacitor assembly provided by this invention also includes an insulating positioning component 40. The insulating positioning component 40 includes a receiving portion and a positioning portion. The receiving portion accommodates the X capacitor 11, and the positioning portion is positioned and engaged with the grounding busbar. In this embodiment, the positioning portion is a positioning pin, and the grounding busbar is provided with a positioning pin hole that engages with the positioning pin. When the length of the first Y capacitor 12 and / or the second Y capacitor 13 changes due to capacitance requirements, the grounding busbar can adjust accordingly with the cooperation of the positioning pin and the positioning pin hole, without the need to redesign the positioning structure.

[0047] In this embodiment, the positioning part includes a set of first positioning pins 41 and a set of second positioning pins 42. The set of first positioning pins 41 is positioned and inserted into the first grounding busbar 31, and the set of second positioning pins 42 is positioned and inserted into the second grounding busbar 32. The set of first positioning pins 41 includes at least two first positioning pins 41, and each first grounding busbar 31 is positioned and inserted into a portion of the first positioning pins 41; the set of second positioning pins 42 includes at least two second positioning pins 42, and each second grounding busbar 32 is positioned and inserted into a portion of the second positioning pins 42. For example, the set of first positioning pins 41 includes two first positioning pins 41, and each first grounding busbar 31 is positioned and inserted into one of the first positioning pins 41; the set of second positioning pins 42 includes two second positioning pins 42, and each second grounding busbar 32 is positioned and inserted into one of the second positioning pins 42. By positioning each first grounding busbar 31 with only a portion of the first positioning pins 41, and positioning each second grounding busbar 32 with only a portion of the second positioning pins 42, it is convenient to increase or decrease the number of the first Y capacitor 12 and the second Y capacitor 13.

[0048] Optionally, such as Figure 7 and Figure 8 As shown, the number of the first Y capacitor 12 and the second Y capacitor 13 can both be one. Correspondingly, the number of the first grounding busbar 31 and the second grounding busbar 32 can both be one. A portion of the first positioning pins 41 in a set are positioned and inserted into the first grounding busbar 31, while the other portion of the first positioning pins 41 are reserved. A portion of the second positioning pins 42 in a set are positioned and inserted into the second grounding busbar 32, while the other portion of the second positioning pins 42 are reserved. Or as... Figure 9 As shown, the number of first Y capacitors 12 and second Y capacitors 13 can both be expanded to two. Correspondingly, the number of first grounding busbars 31 and second grounding busbars 32 are both two. A portion of the first positioning pins 41 in a set are positioned and inserted into one first grounding busbar 31, and the other portion are positioned and inserted into the other first grounding busbar 31. Similarly, a portion of the second positioning pins 42 in a set are positioned and inserted into one second grounding busbar 32, and the other portion are positioned and inserted into the other second grounding busbar 32. The number of Y capacitors can be expanded from two to four, realizing a series of capacitor quantities.

[0049] In this embodiment, the first grounding busbar 31 is provided with two rotationally symmetrical first positioning pin holes 311, and the second grounding busbar 32 is provided with two rotationally symmetrical second positioning pin holes 321. This enables rapid expansion of the Y capacitor without adding any other components besides the Y capacitor and the grounding busbar.

[0050] The present invention also provides a filter, including positive and negative busbars and the aforementioned filter capacitor assembly, wherein both the positive transition busbar 21 and the negative transition busbar 22 are connected to the positive and negative busbars. By providing the aforementioned filter capacitor assembly, the application range of the filter can be broadened.

[0051] Furthermore, a first clamping part 211 is provided on the positive terminal busbar 21, and a second clamping part 221 is provided on the negative terminal busbar 22. The positive and negative terminals are clamped between the first clamping part 211 and the second clamping part 221, and are in contact with the first clamping part 211 and the second clamping part 221.

[0052] The present invention also provides an inverter, including an inverter housing and the aforementioned filter, wherein the filter is disposed within the inverter housing.

[0053] The present invention also provides an electric drive assembly including the inverter described above.

[0054] The present invention also provides a vehicle including the above-described electric drive assembly.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A filter capacitor, formed by winding a composite thin film, said composite thin film comprising at least one positive electrode layer (101), at least one negative electrode layer (102), and a plurality of insulating layers (103), characterized in that, At least one positive electrode layer (101) and at least one negative electrode layer (102) are staggered along the thickness direction, and the positive electrode layer (101) and the negative electrode layer (102) are partially stacked along the thickness direction, and a plurality of insulating layers (103) are distributed on at least one side of the at least one positive electrode layer (101) and at least one negative electrode layer (102) along the thickness direction.

2. A method for serializing filter capacitors, characterized in that, The serialization method, applied to the filter capacitor as described in claim 1, includes: adjusting the number of positive electrode layer (101), negative electrode layer (102) and insulating layer (103) and / or adjusting the length of the filter capacitor and the stacking length of the positive electrode layer (101) and negative electrode layer (102) to adjust the capacitance value of the filter capacitor, so as to obtain a series of filter capacitors with different capacitance values.

3. The method for serializing filter capacitors according to claim 2, characterized in that, When the volume of the filter capacitor is constant, the capacitance value of the filter capacitor is adjusted by adjusting the number of positive electrode layer (101), negative electrode layer (102) and insulating layer (103); when the number of positive electrode layer (101), negative electrode layer (102) and insulating layer (103) is constant, the capacitance value of the filter capacitor is adjusted by adjusting the length of the filter capacitor and the stacking length of the positive electrode layer (101) and negative electrode layer (102).

4. A method for serializing filter capacitors, characterized in that, Applied to the filter capacitor as described in claim 1, the serialization method includes: adjusting the side length of the positive electrode layer (101) and the negative electrode layer (102) to adjust the withstand voltage of the filter capacitor, so as to obtain a series of filter capacitors with different withstand voltage values.

5. A filter capacitor assembly, characterized in that, The system includes the filter capacitor as described in claim 1, and further includes a positive terminal busbar (21), a negative terminal busbar (22), and a ground busbar. The filter capacitor includes an X capacitor (11), a first Y capacitor (12), and a second Y capacitor (13). The positive terminal busbar (21) is connected to one end of the X capacitor (11) and one end of the first Y capacitor (12). The negative terminal busbar (22) is connected to the other end of the X capacitor (11) and one end of the second Y capacitor (13). The ground busbar is connected to the other end of the first Y capacitor (12) and the other end of the second Y capacitor (13).

6. The filter capacitor assembly according to claim 5, characterized in that, It also includes an insulating positioning member (40), which includes a receiving part and a positioning part. The receiving part accommodates the X capacitor (11), and the positioning part is positioned in conjunction with the grounding busbar.

7. The filter capacitor assembly according to claim 6, characterized in that, The grounding busbar includes a first grounding busbar (31) and a second grounding busbar (32). The first grounding busbar (31) is connected to the first Y capacitor (12), and the second grounding busbar (32) is connected to the second Y capacitor (13). The positioning part includes a first positioning pin (41) and a second positioning pin (42). The first grounding busbar (31) is provided with a first positioning pin hole (311), and the second grounding busbar (32) is provided with a second positioning pin hole (321). The first positioning pin (41) is inserted into the first positioning pin hole (311), and the second positioning pin (42) is inserted into the second positioning pin hole (321).

8. The filter capacitor assembly according to claim 7, characterized in that, The number of the first Y capacitor (12), the second Y capacitor (13), the first grounding busbar (31), and the second grounding busbar (32) is one each. The number of the first positioning pin (41) and the second positioning pin (42) is multiple. A portion of the first positioning pins (41) are positioned and plugged into the first grounding busbar (31), and another portion of the first positioning pins (41) are reserved. A portion of the second positioning pins (42) are positioned and plugged into the second grounding busbar (32), and another portion of the second positioning pins (42) are reserved. Alternatively, there may be two of each of the first Y capacitor (12), the second Y capacitor (13), the first grounding busbar (31), and the second grounding busbar (32), and multiple of each of the first positioning pins (41) and the second positioning pins (42). Some of the first positioning pins (41) are positioned and plugged into one of the first grounding busbars (31), and some of the first positioning pins (41) are positioned and plugged into another of the first grounding busbars (31); some of the second positioning pins (42) are positioned and plugged into one of the second grounding busbars (32), and some of the second positioning pins (42) are positioned and plugged into another of the second grounding busbars (32).

9. A filter, characterized in that, Includes positive and negative busbars and a filter capacitor assembly as described in any one of claims 5-8, wherein the positive transfer busbar (21) and the negative transfer busbar (22) are both connected to the positive and negative busbars.

10. An inverter, characterized in that, It includes an inverter housing and a filter as described in claim 9, the filter being disposed within the inverter housing.

11. An electric drive assembly, including the inverter of claim 10.

12. A vehicle, characterized in that, Includes the electric drive assembly as described in claim 11.

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