CN210629346U - Electromagnetic compatibility filtering module - Google Patents
Electromagnetic compatibility filtering module Download PDFInfo
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- CN210629346U CN210629346U CN201921728485.0U CN201921728485U CN210629346U CN 210629346 U CN210629346 U CN 210629346U CN 201921728485 U CN201921728485 U CN 201921728485U CN 210629346 U CN210629346 U CN 210629346U
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Abstract
The utility model provides an electromagnetic compatibility filtering module, which comprises an insulating main body, a positive copper bar, a negative copper bar, a magnetic ring, a printed circuit board and a filtering capacitor group, wherein the positive copper bar, the negative copper bar and the magnetic ring are wrapped and molded on the insulating main body, and the positive copper bar and the negative copper bar pass through the magnetic ring; the printed circuit board is fixed to the insulating main body, the positive copper bar, the negative copper bar and the filter capacitor group are respectively welded to the printed circuit board, and the filter capacitor group is in conductive connection with the positive copper bar and the negative copper bar through a circuit on the printed circuit board. The embodiment of the utility model provides a through adopting integration structure with insulating main part, positive copper bar, burden copper bar, magnetic ring, not only make overall structure compact, simplify production technology, can effectively promote the filtering effect moreover, restrain the high pressure conduction electromagnetic interference noise of external production.
Description
Technical Field
The embodiment of the utility model provides a relate to power electronic equipment field, more specifically say, relate to an electromagnetic compatibility filtering module.
Background
In the electrical control industry, an Electromagnetic Compatibility (EMC) filtering module is used to suppress harmonics in a power supply network and prevent the harmonics from entering a load, and the EMC filtering module is also used to suppress harmonics generated by the load and prevent the harmonics from entering the power supply network.
As shown in fig. 1 and 2, in the conventional electronic control system, the electromagnetic compatibility filter module generally adopts an LC topology structure, and a positive copper bar 11 and a negative copper bar 12 from a battery pack first pass through a magnetic ring 13 and then pass through two Y capacitors 14 to be output. Two pins of each Y capacitor 14 are respectively connected with the switching copper bars through resistance welding. The switching copper bar is electrically connected with the positive copper bar 11 and the negative copper bar 12 through bolts 15, and the switching copper bar is also connected with a reference ground through bolts 16. The magnetic ring 13, the Y capacitor 14, the positive copper bar 11, the negative copper plate 12 and the positive copper plate support plastic part 10 are independent.
However, in the above electromagnetic compatibility filter module, the copper bars and the magnetic rings are independent of each other and are combined together in an assembling manner, which causes low production efficiency of products and increases the product space due to the difficulty in volume compression.
Chinese patent application No. CN109787423A discloses an EMC filter module and a motor controller thereof, which use a CLC topology structure to perform filtering, and specifically discloses a magnetic assembly and an electric assembly, wherein the magnetic assembly includes a flow guiding column and a magnetic core, the electric assembly includes a Printed Circuit Board (PCB), and the Printed Circuit Board is provided with a first-stage filter Circuit and a second-stage filter Circuit. The input end of the first-level filter circuit is connected with the first busbar, the output end of the second-level filter circuit is connected with the second busbar, the first busbar and the first end of the diversion column are connected with the input busbar, and the second busbar is connected with the output busbar. The structure has the advantages of small occupied space and high power density. However, the diversion columns are connected with the first busbar and the second busbar, so that the number of parts of the power assembly is large, and the universality is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a copper bar and magnetic ring mutual independence cause product production efficiency low, the volume is difficult to compress in to above-mentioned electromagnetic compatibility filter module to and the problem that electric power component spare part is more, the commonality is relatively poor in the scheme of adopting printed circuit board, provide a new electromagnetic compatibility filter module.
The embodiment of the utility model provides a technical scheme who solves above-mentioned technical problem provides an electromagnetic compatibility filter module, including insulating main part, positive copper bar, burden copper bar, magnetic ring, printed circuit board and filter capacitor group, positive copper bar, burden copper bar and magnetic ring package are moulded on insulating main part, and positive copper bar and burden copper bar pass the magnetic ring; the printed circuit board is fixed to the insulating main body, the positive copper bar, the negative copper bar and the filter capacitor group are respectively welded to the printed circuit board, and the filter capacitor group is in conductive connection with the positive copper bar and the negative copper bar through a circuit on the printed circuit board.
Preferably, the insulating main body is provided with a mounting cavity, and the filter capacitor assembly is arranged in the mounting cavity.
Preferably, the printed circuit board is fixed above the mounting cavity and covers the opening of the mounting cavity, and the printed circuit board is provided with a grounding terminal.
Preferably, the mounting cavity comprises two first cavities, and the two first cavities are respectively located at two sides of the outer peripheral surface of the magnetic ring;
the filter capacitor bank comprises two first Y capacitors, and the two first Y capacitors are respectively arranged in one first cavity in a mode that pins protrude out of the opening of the first cavity.
Preferably, the printed circuit board is provided with two first soldering holes, the positive copper bar and the negative copper bar are respectively provided with a first terminal, and each first terminal is soldered to one first soldering hole of the printed circuit board;
the printed circuit board is provided with two second welding holes and two third welding holes, each second welding hole is in conductive connection with one first welding hole, and each third welding hole is connected to a grounding terminal of the printed circuit board;
the first pin of each first Y capacitor is welded to one second welding hole, and the second pin of each first Y capacitor is welded to one third welding hole.
Preferably, the mounting cavity comprises a second cavity, and the second cavity is located between the end of the magnetic ring and the output wiring ends of the positive copper bar and the negative copper bar; the filter capacitor group comprises two second Y capacitors and an X capacitor, the two second Y capacitors are respectively arranged in the first cavity in a mode that pins protrude out of the opening of the first cavity, and the X capacitor is arranged in the second cavity in a mode that pins protrude out of the opening of the second cavity.
Preferably, the printed circuit board is provided with two fourth soldering holes, the positive copper bar and the negative copper bar are respectively provided with second terminals, and each second terminal is soldered to one fourth soldering hole of the printed circuit board;
the printed circuit board is provided with two fifth welding holes, two sixth welding holes, a seventh welding hole and an eighth welding hole, each fifth welding hole is in conductive connection with one fourth welding hole, each sixth welding hole is connected to a grounding terminal of the printed circuit board, and the seventh welding hole and the eighth welding hole are in conductive connection with one first welding hole respectively;
the first pin of each second Y capacitor is soldered to one of the fifth solder holes, the second pin of each second Y capacitor is soldered to one of the sixth solder holes, the first pin of the X capacitor is soldered to the seventh solder hole, and the second pin of the X capacitor is soldered to the eighth solder hole.
Preferably, the first terminal is located between the output wiring end of the positive copper bar or the negative copper bar and the magnetic ring; the second terminal is located between the input wiring end of the positive copper bar or the negative copper bar and the magnetic ring.
Preferably, the insulating main body is provided with a reserved nut hole, and at least one part of the positive copper bar and the negative copper bar is exposed in the reserved nut hole.
Preferably, the insulating main body is provided with a reserved lock hole.
The utility model discloses electromagnetic compatibility filtering module has following beneficial effect: through adopting integrated structure with insulating main part, positive copper bar, burden copper bar, magnetic ring, not only make overall structure compact, simplify production technology, can effectively promote the filtering effect moreover, restrain the high pressure conduction electromagnetic interference noise of external production.
Drawings
Fig. 1 is a schematic structural diagram of a conventional electromagnetic compatibility filter module;
FIG. 2 is a circuit topology diagram of a prior art electromagnetic compatibility filter module;
fig. 3 is a schematic structural diagram of an electromagnetic compatibility filter module according to an embodiment of the present invention;
fig. 4 is a circuit topology diagram of an electromagnetic compatibility filter module according to an embodiment of the present invention;
fig. 5 is an exploded schematic diagram of an electromagnetic compatibility filter module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below 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 are not intended to limit the invention.
As shown in fig. 3-5, the schematic diagrams of the electromagnetic compatibility filtering module provided by the embodiments of the present invention are shown, and the electromagnetic compatibility filtering module can be applied to an electronic control system and suppress high-voltage conducted electromagnetic interference noise generated externally. The electromagnetic compatibility filter module of the embodiment includes an insulating main body 30, a positive copper bar 31, a negative copper bar 32, a magnetic ring 33, a printed circuit board 34 and a filter capacitor set, where the positive copper bar 31, the negative copper bar 32 and the magnetic ring 33 are wrapped and molded on the insulating main body 30, and the positive copper bar 31 and the negative copper bar 32 respectively pass through the magnetic ring 33 (for example, the positive copper bar 31 and the negative copper bar 32 are parallel), that is, the positive copper bar 31, the negative copper bar 32, the magnetic ring 33 and the insulating main body 30 are integrated (for example, the positive copper bar 31, the negative copper bar 32 and the magnetic ring 33 are placed in an injection mold when the insulating main body 30 is; the printed circuit board 34 is fixed to the insulating body 30, the positive copper bar 31, the negative copper bar 32 and the filter capacitor bank are respectively soldered to the printed circuit board 34, that is, the connection terminals on the positive copper bar 31, the negative copper bar 32 and the filter capacitor bank are respectively soldered to the printed circuit board 34, and the filter capacitor bank is electrically connected with the positive copper bar 31 and the negative copper bar 32 via the circuit on the printed circuit board 34 (for example, formed by copper sheets on the printed circuit board 34), so as to form a corresponding circuit topology.
The electromagnetic compatibility filtering module adopts the integrated structure of the insulating main body 30, the positive copper bar 31, the negative copper bar 32 and the magnetic ring 33, so that the whole structure is compact, the production process is simplified, the filtering effect can be effectively improved, and the high-voltage conduction electromagnetic interference noise generated externally is inhibited. And because the printed circuit board 34 is directly welded and fixed with the positive copper bar 31, the negative copper bar 32 and the filter capacitor bank, corresponding electrical connection components can be reduced.
The magnetic ring 33 may be made of ferrite, especially nickel-zinc ferrite. The magnetic ring 33 may be formed by combining two parts, and a channel is opened in the middle of each part, and the positive copper bar 31 and the negative copper bar 32 pass through the channels. By adopting the structure, the volume of the magnetic ring 33 can be reduced, and the cost is reduced.
In an embodiment of the present invention, the insulating main body 30 may have a mounting cavity 301 thereon, the filter capacitor assembly is disposed in the mounting cavity 301, and the connection terminals (e.g., pins) of the filter capacitor assembly protrude out of the mounting cavity 301. In practical applications, the mounting cavity may be specifically formed by a groove (or a cavity, that is, a portion of the insulating body 30 lower than the surface) on the surface of the insulating body 30, and in order to avoid the filter capacitor bank from loosening in the mounting cavity 301, the filter capacitor bank may be fixed in the mounting cavity 301 by a potting adhesive.
The printed circuit board 34 may be fixed above the mounting cavity 301 and cover the opening of the mounting cavity 30, and the printed circuit board 34 has a ground terminal thereon, and the ground terminal may be grounded through the ground screw 36. Through the structure, the welding operation of the connecting terminals of the filter capacitor bank is facilitated, and the overall structure of the product is more compact.
During assembly, the filter capacitor bank can be inserted into the mounting cavity 301, the insulating main body 30 coated with the positive copper bar 31, the negative copper bar 32 and the magnetic ring 33 is reversely buckled on the printed circuit board 34, the printed circuit board 34 and the insulating main body 30 are fixed (for example, a buckle 37 can be adopted for buckling), and finally the printed circuit board 34, the filter capacitor assembly, the positive copper bar 31 and the negative copper bar 32 are welded and fixed to complete electrical connection.
In another embodiment of the present invention, the mounting cavity 301 includes two first cavities, and the two first cavities are respectively located at two sides of the outer peripheral surface of the magnetic ring 33. Correspondingly, the filter capacitor bank includes two first Y capacitors 351, and the two first Y capacitors 351 are respectively disposed in a first chamber in a manner that the leads protrude out of the first chamber opening. The above structure can make the overall structure of the product more compact, and reduce the volume of the insulating main body 30.
The printed circuit board 34 has two first solder holes 341, the positive copper bar 31 and the negative copper bar 32 have first terminals 311, 321, respectively, and each of the first terminals 311, 321 is soldered to one of the first solder holes 341 of the printed circuit board 34. The printed circuit board 34 further has two second solder holes and two third solder holes, each second solder hole is electrically connected to one first solder hole (via a copper sheet on the printed circuit board 34), each third solder hole is connected to a ground terminal of the printed circuit board (via a copper sheet on the printed circuit board 34), the first pin of each first Y capacitor 351 is soldered to one second solder hole, and the second pin of each first Y capacitor 351 is soldered to one third solder hole. Through the structure, one ends of the two first Y capacitors 351 can be connected to the positive copper bar 31 and the negative copper bar 32 respectively, and the other ends are grounded respectively. The first, second and third solder holes 341, 341 may be formed by a through hole on the printed circuit board 34 and a pad disposed around the through hole.
In addition, the mounting cavity 301 may further include a second chamber (which may be in communication with the first chamber), and the second chamber is located between the end of the magnetic ring 33 and the output terminals (i.e., terminals for connecting loads) of the positive copper bar 31 and the negative copper bar 32; the filter capacitor bank includes two second Y capacitors 352 and an X capacitor 353, the two second Y capacitors 352 are respectively installed in a first chamber in a manner that pins protrude out of openings of the first chamber, and the X capacitor 353 is installed in a second chamber in a manner that pins protrude out of openings of the second chamber. By the above-described mounting cavity structure, a mold of the insulating body can be simplified, and the first Y capacitor 351 and the second Y capacitor 352 can be mounted at the same time, simplifying the process.
Accordingly, the printed circuit board 34 has two fourth solder holes 342, the positive copper row 31 and the negative copper row 32 have the second terminals 312 and 322, respectively, and each of the second terminals 312 and 322 is soldered to one of the fourth solder holes 342 of the printed circuit board 34. The printed circuit board 34 has two fifth solder holes, two sixth solder holes, a seventh solder hole and an eighth solder hole, each of the fifth solder holes is electrically connected to one of the fourth solder holes, each of the sixth solder holes is connected to the ground terminal of the printed circuit board 34, and the seventh solder hole and the eighth solder hole are electrically connected to one of the first solder holes, respectively. A first pin of each second Y capacitor 352 is soldered to a fifth solder hole, and a second pin of each second Y capacitor 352 is soldered to a sixth solder hole, so that one end of each second Y capacitor 352 is connected to the positive copper bar 31 and the negative copper bar 32, and the other end of each second Y capacitor 352 is grounded; the first pin of the X capacitor 353 is soldered to the seventh solder hole, and the second pin of the X capacitor is soldered to the eighth solder hole, so that both ends of the X capacitor 353 are connected to the positive copper bar 31 and the negative copper bar 32, respectively. Similarly, the fourth solder hole 342, the fifth solder hole, the sixth solder hole, the seventh solder hole, and the eighth solder hole may be formed by a through hole of the printed circuit board 34 and a pad disposed around the through hole, respectively.
Specifically, the first terminal is located between the output terminals (i.e., terminals for connecting loads) of the positive copper bar 31 and the negative copper bar 32 and the magnetic ring 33; the second terminal is located between the input terminals (i.e., the terminals connected to the power supply) of the positive copper bar 31 and the negative copper bar 32 and the magnetic ring 33. Thus, the first Y capacitor 351 is connected between the input terminal of the positive copper bar 31 and the negative copper bar 32 and the magnetic ring 33, and the second Y capacitor 352 is connected between the output terminal of the positive copper bar 31 and the negative copper bar 32 and the magnetic ring 33, so as to realize the circuit topology shown in fig. 4.
In another embodiment of the present invention, a certain functional module interface may be reserved in the electromagnetic compatibility filtering module, for example, a nut hole 304 may be reserved near the end of the positive copper bar 31 and the end of the negative copper bar 32 on the insulating main body 30, and at least a portion of the positive copper bar 31 and the negative copper bar 32 is exposed in the reserved nut hole 304, and when an external cable is connected, the positive copper bar 31 and the negative copper bar 32 may be directly screwed and fixed by bolts; or a nut hole 304 can be reserved on the insulating main body 30, the positive copper bar 31 and the negative copper bar 32 are arranged above the reserved nut hole 304, holes are formed in positions, corresponding to the reserved nut hole 304, of the positive copper bar 31 and the negative copper bar 32, when an external cable is connected, a bolt directly penetrates through the positive copper bar 31 or the negative copper bar 32 and is matched with the reserved nut hole, the external cable, the positive copper bar 31, the negative copper bar 32 and the insulating main body 30 are connected, redundant fixing measures are not needed, and contact insulation can be ensured.
In addition, a lock hole can be reserved on the insulating main body 30, so that the controller box and the plastic part can be connected in a high-voltage interlocking mode.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electromagnetic compatibility filtering module is characterized by comprising an insulating main body, a positive copper bar, a negative copper bar, a magnetic ring, a printed circuit board and a filtering capacitor set, wherein the positive copper bar, the negative copper bar and the magnetic ring are wrapped and molded on the insulating main body, and the positive copper bar and the negative copper bar penetrate through the magnetic ring; the printed circuit board is fixed to the insulating main body, the positive copper bar, the negative copper bar and the filter capacitor group are respectively welded to the printed circuit board, and the filter capacitor group is in conductive connection with the positive copper bar and the negative copper bar through a circuit on the printed circuit board.
2. The emc filter module of claim 1, wherein the insulative body has a mounting cavity therein, and the filter capacitor assembly is disposed within the mounting cavity.
3. The emc filter module of claim 2, wherein the printed circuit board is secured over the mounting cavity and covers the opening of the mounting cavity, and the printed circuit board has a ground terminal thereon.
4. The emc filter module of claim 3, wherein the mounting cavity includes two first cavities, and the two first cavities are respectively located on two sides of the outer circumferential surface of the magnetic ring;
the filter capacitor bank comprises two first Y capacitors, and the two first Y capacitors are respectively arranged in one first cavity in a mode that pins protrude out of an opening of the first cavity.
5. The emc filter module of claim 4, wherein said printed circuit board has two first solder holes, said positive and negative copper bars have first terminals, respectively, and each of said first terminals is soldered to one first solder hole of said printed circuit board;
the printed circuit board is provided with two second welding holes and two third welding holes, each second welding hole is in conductive connection with one first welding hole, and each third welding hole is connected to a grounding terminal of the printed circuit board;
the first pin of each first Y capacitor is welded to one second welding hole, and the second pin of each first Y capacitor is welded to one third welding hole.
6. The emc filter module of claim 5, wherein the mounting cavity includes a second cavity, and the second cavity is located between the end of the magnetic loop and the output terminals of the positive and negative copper bars; the filter capacitor bank comprises two second Y capacitors and an X capacitor, the two second Y capacitors are respectively arranged in the first cavity in a mode that pins protrude out of the opening of the first cavity, and the X capacitor is arranged in the second cavity in a mode that pins protrude out of the opening of the second cavity.
7. The emc filter module of claim 6, wherein said printed circuit board has two fourth solder holes, said positive and negative copper bars have second terminals, respectively, and each of said second terminals is soldered to one fourth solder hole of said printed circuit board;
the printed circuit board is provided with two fifth welding holes, two sixth welding holes, a seventh welding hole and an eighth welding hole, each fifth welding hole is in conductive connection with one fourth welding hole, each sixth welding hole is connected to a grounding terminal of the printed circuit board, and the seventh welding hole and the eighth welding hole are in conductive connection with one first welding hole respectively;
the first pin of each second Y capacitor is soldered to one of the fifth solder holes, the second pin of each second Y capacitor is soldered to one of the sixth solder holes, the first pin of the X capacitor is soldered to the seventh solder hole, and the second pin of the X capacitor is soldered to the eighth solder hole.
8. The emc filtering module of claim 7, wherein the first terminal is located between the output terminal of the positive or negative copper bar and the magnetic ring; the second terminal is located between the input wiring end of the positive copper bar or the negative copper bar and the magnetic ring.
9. The emc filter module of claim 1, wherein the insulating body has a reserved nut hole, and at least a portion of the positive and negative copper bars is exposed into the reserved nut hole.
10. The emc filter module of claim 1, wherein the insulating body has a pre-formed locking hole therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728485.0U CN210629346U (en) | 2019-10-15 | 2019-10-15 | Electromagnetic compatibility filtering module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728485.0U CN210629346U (en) | 2019-10-15 | 2019-10-15 | Electromagnetic compatibility filtering module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210629346U true CN210629346U (en) | 2020-05-26 |
Family
ID=70749837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921728485.0U Active CN210629346U (en) | 2019-10-15 | 2019-10-15 | Electromagnetic compatibility filtering module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210629346U (en) |
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2019
- 2019-10-15 CN CN201921728485.0U patent/CN210629346U/en active Active
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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |