CN215073488U - Direct current filter and electric drive controller - Google Patents
Direct current filter and electric drive controller Download PDFInfo
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- CN215073488U CN215073488U CN202121336073.XU CN202121336073U CN215073488U CN 215073488 U CN215073488 U CN 215073488U CN 202121336073 U CN202121336073 U CN 202121336073U CN 215073488 U CN215073488 U CN 215073488U
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Abstract
The utility model discloses a direct current filter and electric drive controller sets up flexible electric connection portion through original rigidity electric connector department at direct current filter input and/or output, regards flexible electric connection portion as the adapting unit in the middle of, connects outside direct current input device and/or direct current output device. The flexible electric connection part is arranged at the original rigid connection part, so that the rigid connection is changed into flexible connection, the influence of stress generated at the connection position of the direct current filter and an external device on the integrated circuit board is reduced, and the problem that the existing direct current filter is easy to generate strain to cause the welding problem or the cracking problem of the integrated circuit board or parts on the integrated circuit board is solved.
Description
Technical Field
The utility model belongs to the technical field of direct current filter, especially, relate to a direct current filter and electricity drive controller.
Background
A dc filter is a filter that is primarily used to block and short circuit ac signals. The output waveform is more stable by filtering with a capacitor. The voltage resistance is improved by connecting the capacitors in series, and the output direct current is more stable by increasing the capacity in parallel. The direct current filter is used as important equipment of the converter station, is arranged between a direct current high-voltage bus and a neutral bus in parallel, and is the most effective means for inhibiting direct current side harmonic waves of a High Voltage Direct Current (HVDC) transmission system.
In an electric drive controller, a DC filter is used for providing high-voltage DC power supply and DC bus connection, and the main functions include reducing conduction radiation in a high-voltage line, including common mode noise and differential mode noise.
Referring to fig. 2, in the conventional product, rigid copper bars at two ends of a dc filter are rigidly connected with a dc input high voltage connector and a dc bus bar through bolts, due to accumulated tolerance of a size chain, a certain gap or overlap exists between the dc filter and the high voltage connector and the dc bus bar connecting copper bars, the rigid copper bars are connected with a PCBA integrated circuit board through rigid binding posts, and the electric drive controller is applied to an electric vehicle which can generate a large amount of vibration during driving. Therefore, the rigid connection can cause vibration to transfer stress to the integrated circuit board of the direct current filter through the rigid copper bars and the rigid binding posts, and finally the integrated circuit board generates strain, so that the problem of welding or cracking of the integrated circuit board or parts on the integrated circuit board is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a direct current filter and electricity drive controller to solve current direct current filter and easily produce the meeting an emergency, cause on integrated circuit board or the integrated circuit board spare part welding problem or the fracture problem to appear.
In order to solve the above problem, the technical scheme of the utility model is that:
the utility model discloses a direct current filter, the input end and the output end of the direct current filter are respectively provided with a rigid electric connector which comprises at least one flexible electric connection part;
the first end of the flexible electric connection part is electrically connected with the rigid electric connection piece of the input end and/or the output end;
and the second end of the flexible electric connection part is used for being electrically connected with an external direct current input device or an external direct current output device.
The utility model discloses a direct current filter, the material of flexible electric connection portion is copper or silver or aluminium.
In the dc filter of the present invention, the flexible electrical connection portion is a flexible lamination;
the flexible lamination comprises a plurality of flexible electric connection sheets which are stacked in sequence.
In the direct current filter of the utility model, the first ends of the adjacent flexible electric connecting sheets are fixedly connected; and the second ends of the adjacent flexible electric connection sheets are fixedly connected.
The utility model discloses a direct current filter, the thickness of flexible electric connection piece is 0.05mm ~ 0.2 mm.
The utility model discloses a direct current filter, the direction of first end to second end of flexible lamination is first direction, flexible lamination is in the aspect ratio of the cross section on the first direction is greater than 4.
In the dc filter of the present invention, the number of the flexible electrical connection portions is two, and the flexible electrical connection portions are respectively a first flexible electrical connection portion and a second flexible electrical connection portion;
the first end of the first flexible electric connection part is electrically connected with the rigid electric connection piece of the input end, and the second end of the first flexible electric connection part is used for being electrically connected with an external direct current input device;
the first end of the second flexible electric connection part is electrically connected with the rigid electric connection part of the output end, and the second end of the second flexible electric connection part is used for being electrically connected with an external direct current output device.
The utility model discloses a direct current filter, the first end and the input or the output of flexible electric connection portion rigidity electric connector welded connection.
The utility model discloses a direct current filter, the second end of flexible electric connection portion is equipped with the connecting hole that is used for with outside direct current input device or outside direct current output device bolted connection.
The utility model discloses an electricity drive controller, including above-mentioned arbitrary one direct current filter.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
the utility model discloses an embodiment sets up flexible electric connection portion through the original rigidity electric connection piece department at DC filter input and/or output, regards flexible electric connection portion as middle adapting unit, connects outside direct current input device and/or direct current output device. The flexible electric connection part is arranged at the original rigid connection part, so that the rigid connection is changed into flexible connection, the influence of stress generated at the connection position of the direct current filter and an external device on the integrated circuit board is reduced, and the problem that the existing direct current filter is easy to generate strain to cause the welding problem or the cracking problem of the integrated circuit board or parts on the integrated circuit board is solved.
Drawings
Fig. 1 is a schematic diagram of a dc filter according to the present embodiment;
fig. 2 is a schematic diagram of a conventional dc filter.
Description of reference numerals: 1: an integrated circuit board; 2: a capacitor; 3: a rigid wiring terminal; 4: a rigid electrical connection; 5: an inductance; 6: a flexible laminate; 7: a connecting bolt; 8: a DC input device; 9: a direct current output device; 10: and a DC filter.
Detailed Description
The dc filter and the electric drive controller according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Example one
Referring to fig. 1, in an embodiment, a dc filter 10 is provided, wherein rigid electrical connectors 4 are respectively provided at an input end and an output end of the dc filter 10, the rigid electrical connectors 4 are connected with an integrated circuit board through rigid posts 3, the integrated circuit board is provided with a capacitor 2 and other elements, and an inductor 5 is connected between the two rigid electrical connectors 4. The dc filter 10 further comprises at least one flexible electrical connection.
Wherein the first end of the flexible electrical connection is electrically connected to the rigid electrical connection 4 of the input and/or output. The second end of the flexible electrical connection is used for electrical connection with an external dc input device 8 and/or an external dc output device 9.
In the embodiment, the flexible electric connection part is arranged at the original rigid electric connection part 4 at the input end and/or the output end of the direct current filter 10, and the flexible electric connection part is used as an intermediate connection part to connect the external direct current input device 8 and/or the direct current output device 9. The flexible electric connection part is arranged at the original rigid connection part, so that the rigid connection is changed into flexible connection, the influence of stress generated at the connection position of the direct current filter 10 and an external device on the integrated circuit board 1 is reduced, and the problem that the existing direct current filter 10 is easy to generate strain to cause the welding problem or the cracking problem of the integrated circuit board 1 or parts on the integrated circuit board 1 is solved.
And the present embodiment may be an improvement on the existing dc filter 10. The input and the output of current direct current filter 10 product are the rigid copper bar usually, can directly add the flexible electric connection portion of this embodiment on the rigid copper bar, and flexible electric connection portion and rigid copper bar are split type design. Namely, when the direct current filter 10 product is produced, the flexible electric connection part is arranged on the product; after the direct current filter 10 product is purchased, a user can add a flexible electric connection part according to an actual scene.
The specific structure of the dc filter 10 of the present embodiment is further described below:
in this embodiment, the number of the flexible electrical connection portions may be two, which are the first flexible electrical connection portion and the second flexible electrical connection portion, respectively. The rigid structures of the input end and the output end of the dc filter 10 can be replaced by providing two flexible components for connection, so that the influence of stress on the integrated circuit board 1 is further reduced.
The specific connection structure is that a first end of the first flexible electric connection part is electrically connected with the rigid electric connection piece 4 of the input end, and a second end of the first flexible electric connection part is used for being electrically connected with the external direct current input device 8. A first end of the second flexible electrical connection is electrically connected with the rigid electrical connector 4 of the output terminal, and a second end of the second flexible electrical connection is used for electrically connecting with an external direct current output device 9.
In this embodiment, the flexible electrical connection portion is a flexible laminate 6, and the flexible laminate 6 includes a plurality of flexible electrical connection sheets stacked in sequence. The flexible electrical connection sheet may be made of conductive material such as copper, aluminum, or silver, and may be selected according to product design and performance requirements, for example, silver has high conductivity but high cost, and aluminum has poor conductivity but low cost.
In a specific connection structure, a plurality of flexible electric connection sheets are vertically stacked in sequence to form a shape similar to a cuboid, namely the flexible lamination 6. The first ends of the flexible connecting sheets are pressed or resistance welded into a whole; the second ends of the flexible connecting sheets are also pressed or resistance welded into a whole; the middle part of each flexible connecting sheet is not fixed, and a gap can exist, so that the flexibility is ensured.
In specific dimensions, the number of layers of the flexible electrical connection sheet can be determined according to the magnitude of the conductive current and the thickness of the single flexible electrical connection sheet, and finally the sectional area of the flexible lamination sheet 6 is taken as a design purpose. If the current is larger, the required cross section area is larger, the required number of layers is larger, or the thickness of the flexible electric connection sheet is larger. Preferably, the thickness of the flexible electric connection sheet is preferably within a range of 0.05mm to 0.2mm, and the number of layers of the flexible electric connection sheet can be determined according to the thickness of the selected flexible electric connection sheet according to different current requirements.
Meanwhile, the aspect ratio of the cross section of the flexible laminate is as large as the space allows, but in practical applications, the space is generally limited, so the aspect ratio of the cross section is generally set to be larger than 4. However, in other embodiments, different application scenarios may exist, and the aspect ratio is not specifically limited herein.
In this embodiment, the first end of the flexible lamination 6 and the rigid copper bar of the dc filter 10 may be connected by welding. In other embodiments, the specific connection manner is many, and only needs to satisfy the requirements of electrical conduction and fixation, and is not particularly limited herein.
And a second end of the flexible lamination 6 is provided with a connecting hole for connecting with an external direct current input high-voltage connector or an external direct current bus bar through a connecting bolt 7. The purpose of setting up the connecting hole is in order to adapt to original connected mode, and in original rigid connection, external device and direct current filter 10 are bolted connection, so flexible lamination 6 sets up the connecting hole, just need not change with external device connected mode, and external device need not carry out extra adaptation.
Example two
An electrically driven controller comprises a dc filter 10 according to the first embodiment. The flexible electric connection part is arranged at the original rigid electric connection part 4 at the input end or the output end of the direct current filter 10, and the flexible electric connection part is used as an intermediate connection part to connect an external direct current input device 8 or a direct current output device 9. The flexible electric connection part is arranged at the original rigid connection part, so that the rigid connection is changed into flexible connection, the influence of stress generated at the connection position of the direct current filter 10 and an external device on the integrated circuit board 1 is reduced, and the problem that the existing direct current filter 10 is easy to generate strain to cause the welding problem or the cracking problem of the integrated circuit board 1 or parts on the integrated circuit board 1 is solved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (10)
1. A direct current filter is characterized in that a rigid electric connector is respectively arranged at an input end and an output end of the direct current filter, and the direct current filter comprises at least one flexible electric connection part;
the first end of the flexible electric connection part is electrically connected with the rigid electric connection piece of the input end and/or the output end;
and the second end of the flexible electric connection part is used for being electrically connected with an external direct current input device or an external direct current output device.
2. The dc filter of claim 1, wherein the flexible electrical connection is made of copper, silver, or aluminum.
3. The dc filter of claim 1, wherein the flexible electrical connections are flexible laminations;
the flexible lamination comprises a plurality of flexible electric connection sheets which are stacked in sequence.
4. The direct current filter according to claim 3, wherein the first ends of the adjacent flexible electrical connection sheets are fixedly connected; and the second ends of the adjacent flexible electric connection sheets are fixedly connected.
5. The dc filter of claim 3, wherein the flexible electrical connection sheet has a thickness of 0.05mm to 0.2 mm.
6. The dc filter of claim 3, wherein the direction from the first end to the second end of the flexible laminate is a first direction, and wherein a cross-section of the flexible laminate in the first direction has an aspect ratio greater than 4.
7. The direct current filter according to claim 1, wherein the number of the flexible electrical connections is two, being a first flexible electrical connection and a second flexible electrical connection, respectively;
the first end of the first flexible electric connection part is electrically connected with the rigid electric connection piece of the input end, and the second end of the first flexible electric connection part is used for being electrically connected with an external direct current input device;
the first end of the second flexible electric connection part is electrically connected with the rigid electric connection part of the output end, and the second end of the second flexible electric connection part is used for being electrically connected with an external direct current output device.
8. The dc filter of claim 1, wherein the first end of the flexible electrical connection is soldered to the rigid electrical connection of the input or output.
9. The dc filter according to claim 1, wherein the second end of the flexible electrical connection portion is provided with a connection hole for bolting with an external dc input device or an external dc output device.
10. An electrically driven controller comprising a dc filter according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336073.XU CN215073488U (en) | 2021-06-16 | 2021-06-16 | Direct current filter and electric drive controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336073.XU CN215073488U (en) | 2021-06-16 | 2021-06-16 | Direct current filter and electric drive controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215073488U true CN215073488U (en) | 2021-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121336073.XU Active CN215073488U (en) | 2021-06-16 | 2021-06-16 | Direct current filter and electric drive controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215073488U (en) |
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2021
- 2021-06-16 CN CN202121336073.XU patent/CN215073488U/en active Active
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