Compact high-voltage filter

Abstract

The utility model relates to a compact high-voltage filter, which comprises a copper bar, a switching copper bar, a capacitor and a grounding terminal, the copper bar comprises a positive electrode copper bar and a negative electrode copper bar which are arranged side by side; the number of the switching copper bars is at least two, one switching copper bar is connected with the positive electrode copper bar or the negative electrode copper bar, and the other switching copper bar is connected with the grounding terminal. And the at least one capacitor is connected with the switching copper bar and is arranged on one surface of the copper bar side by side along the width direction of the copper bar. Compared with the prior art, the capacitor is directly connected with the copper bar through the switching copper bar, the connection path is short, the structure is compact, and the filtering performance is good; the capacitors are arranged on one side of the copper bar side by side along the width direction of the copper bar, the space in the width direction of the copper bar is fully utilized, the size of the filtering assembly is greatly reduced, and the filtering assembly is suitable for a narrow space or a condition that a filter is additionally arranged after the copper bar is installed; and the overall width of the switching copper bar, the capacitor and the grounding terminal does not exceed the width of the copper bar, so that the capacitor is compactly arranged on one side of the copper bar.

Description

Technical Field

[0001] The utility model relates to high-voltage filtering, in particular to a compact high-voltage filter. Background Art

[0002] With the growing demand for new energy vehicles, the EMC performance of on-board high-voltage components has become a core technical indicator. Simultaneously, lightweighting and miniaturization of high-voltage components have become important development directions. Achieving both excellent EMC performance and component miniaturization has become a challenging technical challenge. Traditional designs often incorporate a separate filter component in addition to the copper busbar to improve EMC. However, due to space and matching issues, this takes up a significant amount of space, making it unsuitable for micro or space-saving applications. Furthermore, the long connection path between the filter component and the copper busbar reduces EMC effectiveness.

[0003] After searching, authorization publication number CN210629346U discloses an electromagnetic compatibility filter module, specifically comprising an insulating body, a positive copper busbar, a negative copper busbar, a magnetic ring, a printed circuit board, and a filter capacitor bank. The positive copper busbar, the negative copper busbar, and the magnetic ring are overmolded on the insulating body, and the positive and negative copper busbars pass through the magnetic ring. The printed circuit board is fixed to the insulating body, and the positive and negative copper busbars and filter capacitor bank are soldered to the printed circuit board. The filter capacitor bank is conductively connected to the positive and negative copper busbars via circuitry on the printed circuit board. However, this prior art utilizes a switched printed circuit board, resulting in a relatively complex structure.

[0004] Therefore, how to design a filter with a reasonable layout and a compact and simple structure is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the present utility model is to provide a compact high-voltage filter in order to overcome the defects of the prior art such as large volume or complex structure.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] According to one aspect of the utility model, a compact high-voltage filter is provided, comprising a copper busbar, a transfer copper busbar, a capacitor and a grounding terminal; the copper busbar comprises a positive copper busbar and a negative copper busbar arranged side by side; there are at least two transfer copper busbars, one of which is connected to the positive copper busbar or the negative copper busbar, and the other is connected to the grounding terminal; there is at least one capacitor, which is connected to the transfer copper busbar and arranged side by side on one side of the copper busbar along the width direction of the copper busbar.

[0008] As a preferred technical solution, the overall width of the transfer copper bus, capacitor and grounding terminal does not exceed the total width of the positive copper bus and the negative copper bus when arranged side by side.

[0009] As a preferred technical solution, the transfer copper bar includes a first transfer copper bar, a second transfer copper bar, a third transfer copper bar and a fourth transfer copper bar; the first transfer copper bar is connected to the positive copper bar, the second transfer copper bar is connected to the negative copper bar, and the third transfer copper bar and the fourth transfer copper bar are connected to the ground terminal.

[0010] As a preferred technical solution, the first transfer copper bar is installed on the side of the positive copper bar close to the negative copper bar, and the second transfer copper bar is installed on the side of the negative copper bar close to the positive copper bar.

[0011] As a preferred technical solution, the capacitor includes an X capacitor, a first Y capacitor and a second Y capacitor; the X capacitor is connected to the first transfer copper bar and the second transfer copper bar, the first Y capacitor is connected to the first transfer copper bar and the third transfer copper bar, and the second Y capacitor is connected to the second transfer copper bar and the fourth transfer copper bar.

[0012] As a preferred technical solution, the third transfer copper bar is located on the side of the positive copper bar away from the negative copper bar, and the fourth transfer copper bar is located on the side of the negative copper bar away from the positive copper bar.

[0013] As a preferred technical solution, the grounding terminal includes a first grounding terminal and a second grounding terminal, the third transfer copper bus is connected to the first grounding terminal, and the fourth transfer copper bus is connected to the second grounding terminal.

[0014] As a preferred technical solution, the first grounding terminal and the second grounding terminal are respectively located on one side of the capacitor.

[0015] As a preferred technical solution, the transfer copper busbar is connected to the copper busbar by welding, riveting or integrally formed.

[0016] As a preferred technical solution, a pin is provided on both sides of one end of the transfer copper busbar connected to the capacitor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The capacitors of this utility model are directly connected to the copper busbar through the transfer copper busbar, which has a short connection path, a compact structure and good filtering performance. The capacitors are arranged side by side on one side of the copper busbar along the width direction of the copper busbar, making full use of the space on the width of the copper busbar and greatly reducing the volume of the filter component. It is suitable for narrow spaces or for installing filters after the copper busbar has been installed.

[0019] 2) The space formed between one end of the transfer copper bar connected to the capacitor and the copper bar of the utility model accommodates the capacitor, and the overall width of the transfer copper bar, the capacitor and the grounding terminal does not exceed the width of the copper bar, so that the capacitor is compactly arranged on one side of the copper bar; the transfer copper bar is arranged according to a determined position, and pins are provided on both sides to connect the copper bar and the grounding terminal, and the grounding terminal is respectively located on one side of the capacitor, which can make the connection line between the copper bar and the capacitor shorter, improve the filtering performance, make the filter layout more reasonable, and make the overall structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection between the copper bus, transfer copper bus and grounding terminal of the utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the utility model which is injection molded in the housing;

[0023] Figure 4 This is the topological diagram of the utility model;

[0024] The numbers in the figure show:

[0025] 11. Positive copper busbar, 12. Negative copper busbar, 21. First transfer copper busbar, 22. Second transfer copper busbar, 23. Third transfer copper busbar, 24. Fourth transfer copper busbar, 31. X capacitor, 32. First Y capacitor, 33. Second Y capacitor, 41. First ground terminal, 42. Second ground terminal. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a compact high-voltage filter, including a copper busbar, a transfer copper busbar, a capacitor, and a grounding terminal. There are at least two transfer copper buses, at least one capacitor, and at least one grounding terminal.

[0028] The copper bars include a positive copper bar 11 and a negative copper bar 12 . The positive copper bar 11 and the negative copper bar 12 are placed side by side. The positive copper bar 11 and the negative copper bar 12 are bent and include two sections after being bent.

[0029] The transfer copper busbars include a first transfer copper busbar 21 , a second transfer copper busbar 22 , a third transfer copper busbar 23 and a fourth transfer copper busbar 24 . The first transfer copper bar 21 is connected to the positive copper bar 11. The first transfer copper bar 21 is bent, and one end is stacked on a section of the positive copper bar 11 after bending, and is located on the side close to the negative copper bar 12, welded or riveted to the positive copper bar 11, and the other end is perpendicular to the other section of the positive copper bar 11, and is connected to the capacitor; the second transfer copper bar 22 is connected to the negative copper bar 12, and the second transfer copper bar 22 is bent, and one end is stacked on a section of the negative copper bar 12 after bending, and is located on the side close to the positive copper bar 11, welded or riveted to the negative copper bar 12, and the other end is perpendicular to the other section of the negative copper bar 12, and is connected to the capacitor; the third transfer copper bar 23 and the fourth transfer copper bar 24 are connected to the ground terminal, the third transfer copper bar 23 is located on the side of the positive copper bar 11 away from the negative copper bar 12, and the fourth is the transfer copper bar located on the side of the negative copper bar 12 away from the positive copper bar 11. There is a pin on each side of one end of the transfer copper busbar connected to the capacitor.

[0030] The capacitors include an X capacitor 31, a first Y capacitor 32, and a second Y capacitor 33. The X capacitor 31 is connected to a pin of the first transfer copper bar 21 and a pin of the second transfer copper bar 22. The first Y capacitor 32 is connected to a pin of the first transfer copper bar 21 and a pin of the third transfer copper bar 23. The second Y capacitor 33 is connected to a pin of the second transfer copper bar 22 and a pin of the fourth transfer copper bar 24. The X capacitor 31, the first Y capacitor 32, and the second Y capacitor 33 are arranged side by side in the width direction of the copper bar and are located on one side of the copper bar. Figure 4 As shown, C1 is an X capacitor 31, C2 is a second Y capacitor 33, and C3 is a first Y capacitor 32. That is, one end of the X capacitor 31 is connected to the positive copper bar 11, and the other end is connected to the negative copper bar 12; one end of the first Y capacitor 32 is connected to the positive copper bar 11, and the other end is grounded; one end of the second Y capacitor 33 is connected to the negative copper bar 12, and the other end is grounded.

[0031] The grounding terminals include a first grounding terminal 41 and a second grounding terminal 42. The first grounding terminal 41 is riveted or welded to the third transfer copper busbar 23, and the second grounding terminal 42 is riveted or welded to the fourth transfer copper busbar 24. The first grounding terminal 41 is located on the side of the first Y capacitor 32 away from the X capacitor 31, and the second grounding terminal 42 is located on the side of the second Y capacitor 33 away from the X capacitor 31.

[0032] like Figure 3 As shown, after the positive copper bar 11, the negative copper bar 12, the first transfer copper bar 21, the second transfer copper bar 22, the third transfer copper bar 23 and the fourth transfer copper bar 24 are injection-molded inside the shell, the X capacitor 31, the first Y capacitor 32 and the second Y capacitor 33 are placed, and then the X capacitor 31, the first Y capacitor 32 and the second Y capacitor 33 are welded to the transfer copper bars accordingly.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A compact high-voltage filter, characterized in that: The invention comprises a copper busbar, a transfer copper busbar, a capacitor and a grounding terminal; the copper busbar comprises a positive copper busbar (11) and a negative copper busbar (12) arranged side by side; there are at least two transfer copper buses, one of which is connected to the positive copper busbar (11) or the negative copper busbar (12), and the other is connected to the grounding terminal; there is at least one capacitor, which is connected to the transfer copper busbar and arranged side by side on one side of the copper busbar along the width direction of the copper busbar.

2. A compact high-voltage filter according to claim 1, characterized in that: The overall width of the transfer copper bus, capacitor and grounding terminal does not exceed the total width of the positive copper bus (11) and the negative copper bus (12) when arranged side by side.

3. The compact high-voltage filter according to claim 1, characterized in that: The transfer copper bar comprises a first transfer copper bar (21), a second transfer copper bar (22), a third transfer copper bar (23) and a fourth transfer copper bar (24); the first transfer copper bar (21) is connected to the positive copper bar (11), the second transfer copper bar (22) is connected to the negative copper bar (12), and the third transfer copper bar (23) and the fourth transfer copper bar (24) are connected to the ground terminal.

4. A compact high-voltage filter according to claim 3, characterized in that: The first transfer copper bar (21) is installed on the side of the positive copper bar (11) close to the negative copper bar (12), and the second transfer copper bar (22) is installed on the side of the negative copper bar (12) close to the positive copper bar (11).

5. The compact high-voltage filter according to claim 3, characterized in that: The capacitors include an X capacitor (31), a first Y capacitor (32), and a second Y capacitor (33); the X capacitor (31) is connected to the first transfer copper busbar (21) and the second transfer copper busbar (22); the first Y capacitor (32) is connected to the first transfer copper busbar (21) and the third transfer copper busbar (23); and the second Y capacitor (33) is connected to the second transfer copper busbar (22) and the fourth transfer copper busbar (24).

6. The compact high-voltage filter according to claim 3, characterized in that: The third transfer copper bar (23) is located on the side of the positive copper bar (11) away from the negative copper bar (12), and the fourth transfer copper bar (24) is located on the side of the negative copper bar (12) away from the positive copper bar (11).

7. A compact high-voltage filter according to claim 5 or 6, characterized in that: The grounding terminal comprises a first grounding terminal (41) and a second grounding terminal (42), the third transfer copper busbar (23) is connected to the first grounding terminal (41), and the fourth transfer copper busbar (24) is connected to the second grounding terminal (42).

8. The compact high-voltage filter according to claim 7, characterized in that: The first grounding terminal (41) and the second grounding terminal (42) are respectively located on one side of the capacitor.

9. The compact high-voltage filter according to claim 1, characterized in that: The transfer copper busbar is connected to the copper busbar by welding, riveting or integrally formed.

10. The compact high-voltage filter according to claim 1, characterized in that: A pin is provided on both sides of one end of the transfer copper bar connected to the capacitor.

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