CN214069808U - High-voltage filter - Google Patents
High-voltage filter Download PDFInfo
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- CN214069808U CN214069808U CN202120038147.5U CN202120038147U CN214069808U CN 214069808 U CN214069808 U CN 214069808U CN 202120038147 U CN202120038147 U CN 202120038147U CN 214069808 U CN214069808 U CN 214069808U
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Abstract
The utility model discloses a high-voltage filter, which comprises a filter bracket and a high-voltage magnetic ring, wherein the high-voltage magnetic ring is arranged on the filter bracket; the impedance component at least comprises an X capacitor for inhibiting differential mode interference and a Y capacitor for inhibiting common mode interference, and can greatly reduce high-frequency electromagnetic interference on the high-voltage direct-current busbar and the cable on the basis of not changing the original circuit design; the amplitude of electromagnetic interference signals in the high-voltage busbar and the cable can be greatly reduced, and the electromagnetic compatibility of the electrical system in which the high-voltage busbar and the cable are arranged is improved.
Description
Technical Field
The utility model relates to an automobile parts field, concretely relates to high-voltage filter.
Background
Because the motor controller, the generator controller and other high-voltage inverter equipment can generate a large amount of electromagnetic interference, the electromagnetic interference can be transmitted to other related devices through the high-voltage direct-current busbar and the cable, the stability of the system is reduced, and meanwhile, the equipment cannot meet the related national electromagnetic compatibility standard.
Therefore, in order to solve the above problems, a high voltage filter is needed, which can greatly reduce the high frequency electromagnetic interference on the high voltage dc bus and the cable.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to overcome the drawbacks of the prior art, and provides a high voltage filter, which can greatly reduce the high frequency electromagnetic interference on the high voltage dc bus and the cable without changing the original circuit design; the amplitude of electromagnetic interference signals in the high-voltage busbar and the cable can be greatly reduced, and the electromagnetic compatibility of the electrical system in which the high-voltage busbar and the cable are arranged is improved.
The utility model discloses a high-voltage filter, including filter support and high-pressure magnetic ring, the high-pressure magnetic ring is installed on the filter support; further comprising an impedance component mounted on the filter support, the impedance component comprising at least an X-capacitance for suppressing differential mode interference and a Y-capacitance for suppressing common mode interference.
Furthermore, the impedance component also comprises a conductive gasket, a positive cable connecting conductive sheet and a negative cable connecting conductive sheet, and the X capacitor is connected with the positive cable connecting conductive sheet and the negative cable connecting conductive sheet;
at least two conductive gaskets are arranged, and at least two Y capacitors are arranged; one of the Y capacitors is connected with the positive cable connecting conducting strip and one of the conducting gaskets; and the other Y capacitor is connected with the negative cable connecting conducting strip and the other conducting gasket.
Further, the filter support is of an annular structure, a containing cavity is formed in the annular structure, and the high-voltage magnetic ring is installed in the containing cavity.
Further, the X capacitor is arranged on the inner side wall of the inner ring of the annular structure, and the positive cable connection conducting strip and the negative cable connection conducting strip are transversely arranged on two sides of the X capacitor respectively.
Further, the projection of the inner ring in the height direction is a rectangular cavity, and the X capacitor is transversely arranged in the middle of the rectangular cavity.
Furthermore, the middle part of the inner ring extends outwards along the height direction to form a mounting bracket, and a partition plate is arranged between the mounting bracket and the rectangular cavity of the inner ring.
Furthermore, the number of the X capacitors is three, two of the X capacitors are arranged in the rectangular cavity of the inner ring along the height direction, and the bottoms of the two X capacitors along the height direction are connected to the partition plate;
the other X capacitor is arranged on the mounting bracket, and the top of the other X capacitor along the height direction is connected to the partition plate.
Further, the outer ring of the annular structure extends outwards along two transverse sides to form mounting lugs;
the mounting support lugs are used for mounting the filter bracket on the electric drive controller, and the two conducting pads are correspondingly mounted on the mounting support lugs on two sides.
Further, the two Y capacitors are respectively and transversely arranged between the X capacitor and the corresponding conductive gasket.
Further, still be provided with pin protection support on the wave filter support, pin protection support is used for protecting the pin of X electric capacity and/or Y electric capacity, pin protection support is one side open-ended and partly surrounds the structure, the pin set up the one side open position at pin protection support promptly.
The utility model has the advantages that: the utility model discloses a high-voltage filter, through the filter support and the high-voltage magnetic ring that set up, combine the X electric capacity that is used for restraining the differential mode interference and the Y electric capacity that is used for restraining the common mode interference, can make high-frequency electromagnetic interference on high-voltage direct-current mother row and the cable greatly reduce on the basis that does not change original circuit design; the amplitude of electromagnetic interference signals in the high-voltage busbar and the cable can be greatly reduced, and the electromagnetic compatibility of the electrical system in which the high-voltage busbar and the cable are arranged is improved.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the bottom of the present invention;
fig. 3 is a schematic structural diagram of the filter holder according to the present invention;
fig. 4 is a schematic structural view of the bottom of the filter holder according to the present invention;
fig. 5 is a schematic top view of the present invention;
fig. 6 is a schematic structural view of the present invention viewed from the bottom;
fig. 7 is a schematic structural view of the front view of the present invention;
fig. 8 is a schematic structural view of the back view (the side opposite to the front view in the longitudinal direction) of the present invention;
fig. 9 is a schematic side view (right side) of the present invention.
Detailed Description
Fig. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic structural view of the bottom of the present invention; fig. 3 is a schematic structural diagram of the filter holder according to the present invention; fig. 4 is a schematic structural view of the bottom of the filter holder according to the present invention; fig. 5 is a schematic top view of the present invention; fig. 6 is a schematic structural view of the present invention viewed from the bottom; fig. 7 is a schematic structural view of the front view of the present invention; fig. 8 is a schematic structural view of the back view (the side opposite to the front view in the longitudinal direction) of the present invention; fig. 9 is a schematic side view (right side) of the present invention. In the scheme, the transverse direction is along the length direction of the filter support 1, the longitudinal direction is the width direction of the filter support 1, and the height direction is the direction perpendicular to the transverse direction and the longitudinal direction at the same time; further comprising an impedance member mounted on the filter holder 1, said impedance member comprising at least an X-capacitor 3 for suppressing differential mode interference and a Y-capacitor 4 for suppressing common mode interference. Because high-voltage inverter equipment such as a motor controller, a generator controller and the like can generate a large amount of electromagnetic interference, the electromagnetic interference can be transmitted to other related devices through the high-voltage direct-current busbar and the cable, the stability of the system is reduced, meanwhile, the equipment can not meet the related national electromagnetic compatibility standard, adding filter equipment in a limited space, so that the high-frequency electromagnetic interference on a high-voltage direct-current bus bar and a cable is greatly reduced, which is a challenge of the design of an electric drive system, in view of the above, the utility model aims to overcome the defects in the prior art, provide a high-voltage filter, and design a filter bracket 1 with a high-voltage magnetic ring 2 on the basis of not changing the original circuit design, and connect an X capacitor 3 for inhibiting differential mode interference and a Y capacitor 4 for inhibiting common mode interference, so that the high-frequency electromagnetic interference on the high-voltage direct-current bus bar and the cable is greatly reduced; the amplitude of electromagnetic interference signals in the high-voltage busbar and the cable can be greatly reduced, and the electromagnetic compatibility of the electrical system in which the high-voltage busbar and the cable are arranged is improved.
In this embodiment, the impedance component further includes a conductive pad 001, a positive cable connecting conductive sheet 002 and a negative cable connecting conductive sheet 003, and the X capacitor 3 is connected to the positive cable connecting conductive sheet 002 and the negative cable connecting conductive sheet 003;
at least two conductive pads 001 and at least two Y capacitors 4 are arranged; one of the Y capacitors 4 is connected to the positive cable connection conductive sheet 002 and one of the conductive pads 001; the other Y capacitor 4 is connected with the negative cable connecting conducting strip 003 and the other conducting gasket 001.
In this embodiment, the filter support 1 is an annular structure, the annular structure is provided with an accommodating cavity 101, and the high-voltage magnetic ring 2 is installed in the accommodating cavity 101. The high-voltage magnetic ring 2 is arranged inside the filter support 1 and is sealed by potting adhesive, and the high-voltage magnetic ring and the filter support 1 form a whole, so that the electromagnetic compatibility of an electrical system is improved; the design of the high-voltage filter can greatly improve the stability of a system, reduce the electromagnetic interference in a high-voltage cable of a motor controller and has the characteristic of high integration, thereby reducing the production cost of the system, saving space and being more beneficial to the miniaturization of products, as shown in the figure, the filter support 1 is of an annular structure provided with an annular accommodating cavity 101, a high-voltage magnetic ring 2 is in adaptive joint with the annular accommodating cavity 101, the accommodating cavity 101 is filled by the high-voltage magnetic ring 2, so that the high-voltage magnetic ring 2 and the filter support 1 form an annular whole body, the volume of the structure is reduced, the annular structure is divided into an inner ring and an outer ring by the accommodating cavity 101, the high-voltage magnetic ring 2 is sleeved on the outer side wall of the inner ring, the outer side wall of the outer ring is sleeved on the high-voltage magnetic ring 2, in order to further improve the space utilization rate and reduce the occupied volume of the device, x electric capacity 3 sets up on the inner ring inside wall of loop configuration, anodal cable connection conducting strip 002 and negative pole cable connection conducting strip 003 set up respectively in X electric capacity 3's both sides along transversely, more specifically, the projection of inner ring along direction of height is the rectangle chamber, X electric capacity 3 is along transversely setting up the middle part in the rectangle chamber.
In this embodiment, the middle portion of the inner ring extends outward along the height direction to form a mounting bracket 102, as shown in the figure, the scheme extends downward along the height direction to form the mounting bracket 102, a partition plate 103 is arranged between the mounting bracket 102 and the rectangular cavity of the inner ring, two partition baffles 106 are arranged in the rectangular cavity, and the rectangular cavity is divided into three spaces by the two partition baffles 106 along the transverse direction; the number of the X capacitors 3 is three, two of the X capacitors are arranged in the rectangular cavity of the inner ring along the height direction, namely are arranged between the two separation baffles 106 along the transverse direction, and the bottoms of the two X capacitors along the height direction are connected to the separation plate 103; another the X electric capacity sets up on installing support 102, and another the X electric capacity is connected on division board 103 along direction of height's top, more accurately, installing support 102 is with another the X electric capacity centre gripping, and this kind of structure is favorable to dwindling the shared space of X electric capacity, the wave filter upwards extends along direction of height's top surface and forms vice installing support 107, vice installing support 107 is used for installing anodal cable junction conducting strip 002 and negative pole cable junction conducting strip 003, and this scheme only demonstrates one of them scheme, X electric capacity 3, anodal cable junction conducting strip 002 and negative pole cable junction conducting strip 003 can also distribute respectively on wave filter support 1 along direction of height's top surface and bottom surface, no longer gives unnecessary the details here.
In this embodiment, the outer ring of the ring structure extends outwards along two lateral sides to form the mounting lugs 104; the installation journal stirrup 104 is used for installing filter support 1 on the electricity drive controller, as shown in the figure, two the corresponding installation journal stirrup 104 of both sides of electrically conductive gasket 001 is installed, and high tension cable passes through positive cable connection conducting strip 002 and negative cable connection conducting strip 003 during the high tension filter installation and connects, two electrically conductive gasket 001 is along transversely establishing the both ends at filter support 1, and two the corresponding also along transversely establishing at filter support 1 along horizontal both ends along transversely dividing of Y electric capacity 4, fixes on the electricity drive controller through the mounting hole on filter support 1, electrically conductive gasket 001 fix on the mounting hole promptly, can provide during the installation with being connected with ground.
In this embodiment, two the Y electric capacity 4 ware is respectively along transversely setting up between X electric capacity 3 and corresponding conductive pad 001, still fixedly connected with is used for installing the fixing base 108 of Y electric capacity 4 on the filter support 1, guarantees the stability of Y electric capacity 4 installation. The positive cable connecting conducting strip 002 and the negative cable connecting conducting strip 003 are respectively connected with a Y capacitor 4 in a welding manner; both the X-capacitor 3 and the Y-capacitor 4 need to be fixed to the filter holder 1 with an adhesive after soldering to improve the resistance of the capacitor against vibrations.
In this embodiment, possess the wiring pin on positive pole cable connection conducting strip 002 and negative pole cable connection conducting strip 003 and the conducting pad 001, be convenient for and be connected with X electric capacity 3 and Y electric capacity 4 electricity, still be provided with pin protection support 105 on the wave filter support 1, pin protection support 105 is used for protecting X electric capacity 3 and/or Y electric capacity 4's pin, pin protection support 105 is one side open-ended and partly surrounds the structure, the pin set up the one side open position at pin protection support 105 promptly. As shown, the pin protection bracket 105 is in a "C" shape, and the opening of the "C" shape protects the pins near the pin protection bracket. A filter structure consisting of the high-voltage magnetic ring 2, the X capacitor 3 and the Y capacitor 4 forms high impedance to high-frequency electromagnetic interference in the high-voltage cable and the busbar, so that the amplitude of the interference is reduced; an X capacitor 3 between the positive electrode and the negative electrode of the cable provides low impedance for differential mode electromagnetic interference between the positive electrode and the negative electrode, so that the differential mode electromagnetic interference flows back to the controller; the Y capacitor 4 provides a low-impedance loop for common-mode electromagnetic interference, so that the common-mode electromagnetic interference flows back to the controller; through the cooperative work of the three main components (the X capacitor 3, the Y capacitor 4 and the high-voltage magnetic ring 2), the amplitude of interference current flowing out of the electric drive system to an external circuit through a high-voltage cable and a busbar is greatly reduced; this high voltage filter can improve the stability of whole system greatly, reduces the high frequency electromagnetic interference who flows to external circuit through the high-voltage cable, forms the 3D structure through the whole wave filter of connection of wave filter support 1 and practices thrift the space greatly, more does benefit to integration, the miniaturization of product.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. A high voltage filter, characterized by: the high-voltage magnetic ring is arranged on the filter support; further comprising an impedance component mounted on the filter support, the impedance component comprising at least an X-capacitance for suppressing differential mode interference and a Y-capacitance for suppressing common mode interference.
2. The high voltage filter according to claim 1, wherein: the impedance component also comprises a conductive gasket, an anode cable connecting conductive sheet and a cathode cable connecting conductive sheet, and the X capacitor is connected with the anode cable connecting conductive sheet and the cathode cable connecting conductive sheet;
at least two conductive gaskets are arranged, and at least two Y capacitors are arranged; one of the Y capacitors is connected with the positive cable connecting conducting strip and one of the conducting gaskets; and the other Y capacitor is connected with the negative cable connecting conducting strip and the other conducting gasket.
3. The high voltage filter according to claim 2, wherein: the filter support is of an annular structure, an accommodating cavity is formed in the annular structure, and the high-voltage magnetic ring is installed in the accommodating cavity.
4. A high-voltage filter according to claim 3, characterized in that: the X capacitor is arranged on the inner side wall of the inner ring of the annular structure, and the positive cable connection conducting strip and the negative cable connection conducting strip are transversely arranged on two sides of the X capacitor respectively.
5. The high voltage filter according to claim 4, wherein: the projection of inner ring along the direction of height is the rectangle chamber, X electric capacity sets up the middle part in the rectangle chamber along transversely.
6. The high voltage filter according to claim 5, wherein: the middle part of the inner ring extends outwards along the height direction to form a mounting bracket, and a partition plate is arranged between the mounting bracket and the rectangular cavity of the inner ring.
7. The high voltage filter according to claim 6, wherein: the number of the X capacitors is three, two X capacitors are arranged in the rectangular cavity of the inner ring along the height direction, and the bottoms of the two X capacitors along the height direction are connected to the partition plate;
the other X capacitor is arranged on the mounting bracket, and the top of the other X capacitor along the height direction is connected to the partition plate.
8. The high voltage filter according to claim 7, wherein: the outer ring of the annular structure extends outwards along two transverse sides to form mounting lugs;
the mounting support lugs are used for mounting the filter bracket on the electric drive controller, and the two conducting pads are correspondingly mounted on the mounting support lugs on two sides.
9. The high voltage filter according to claim 8, wherein: and the two Y capacitors are respectively arranged between the X capacitor and the corresponding conductive gasket along the transverse direction.
10. The high voltage filter according to claim 9, wherein: and the filter support is also provided with a pin protection support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120038147.5U CN214069808U (en) | 2021-01-07 | 2021-01-07 | High-voltage filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120038147.5U CN214069808U (en) | 2021-01-07 | 2021-01-07 | High-voltage filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214069808U true CN214069808U (en) | 2021-08-27 |
Family
ID=77392341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120038147.5U Active CN214069808U (en) | 2021-01-07 | 2021-01-07 | High-voltage filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214069808U (en) |
-
2021
- 2021-01-07 CN CN202120038147.5U patent/CN214069808U/en active Active
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