CN111431496A - Multistage filtering EMC structure - Google Patents
Multistage filtering EMC structure Download PDFInfo
- Publication number
- CN111431496A CN111431496A CN202010226629.3A CN202010226629A CN111431496A CN 111431496 A CN111431496 A CN 111431496A CN 202010226629 A CN202010226629 A CN 202010226629A CN 111431496 A CN111431496 A CN 111431496A
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- filtering
- capacitor
- emc
- filter
- capacitors
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- 238000001914 filtration Methods 0.000 title claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims abstract description 63
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052802 copper Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 26
- 238000001746 injection moulding Methods 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 8
- 239000010408 film Substances 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- ZGHQUYZPMWMLBM-UHFFFAOYSA-N 1,2-dichloro-4-phenylbenzene Chemical compound C1=C(Cl)C(Cl)=CC=C1C1=CC=CC=C1 ZGHQUYZPMWMLBM-UHFFFAOYSA-N 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a multistage filtering EMC structure, which comprises a filtering fixing seat and an X capacitor plate; the body of the filtering fixing seat is an injection molding shell, two switching copper bars and one grounding copper bar are embedded in the injection molding shell, and two magnetic rings and two Y capacitors are fixedly installed in the injection molding shell in a glue pouring and welding mode; one ends of the two Y-shaped capacitor pins are respectively welded with the extending ends of the two switching copper bars, and the other ends of the two Y-shaped capacitor pins are welded with the grounding copper bars; and two ends of the X capacitor plate are respectively connected with the extending ends of the two switching copper bars in a locking way through screws. The multistage filtering EMC structure has the characteristics of high integration and small volume, and front and back 2 magnetic rings, 2Y capacitors and 1X capacitor are distributed in a certain space; the filter devices are fixed in the filter structure in a glue pouring, welding and screw locking mode. The EMC structure with the multi-stage filtering function saves the installation space of the direct current end of the controller and meets the EMC design requirement.
Description
Technical Field
The invention relates to the technical field of motor controllers, in particular to a multi-stage filtering EMC structure.
Background
Electromagnetic compatibility (EMC), refers to the ability of a device or system to function properly in its electromagnetic environment without sustaining electromagnetic disturbance to anything in the environment. According to the EMC definition, the electronic device needs to meet EMC design specifications, on one hand, it needs to ensure that the electronic device has a certain degree of immunity to electromagnetic interference existing in the environment, and on the other hand, it is required that the electromagnetic interference generated by the electronic device in the operating process to the environment cannot exceed a specified limit value.
An automotive motor controller is a typical electronic device on which key electronic components such as a connection harness, a PCB, a power module, and a capacitor module are laid out. In order to solve the EMC problem of the controller, filter devices such as a magnetic ring, a magnetic buckle, an X capacitor and a Y capacitor can be added at a direct current end and a three-phase end, and a filter module, a shielding cover, a grounding design and other measures can be added on a PCB. In order to meet the EMC design index with high requirements, a general design idea is to arrange as many filter devices as possible for the components that need to add EMC measures.
Conventional filter device layouts within the controller typically consider either a horizontal layout or a vertical layout, which requires sufficient layout space within the controller. Because the controller is limited in size, more filter devices cannot be arranged, and EMC design indexes cannot be met.
Disclosure of Invention
The invention aims to: in order to solve the problem that EMC design index can not be satisfied because of the restriction of controller inner space, a novel multistage filtering EMC structure has been designed, and this EMC structure is applied to the direct current and the electric capacity link of controller. The filtering structure adopts a transverse and longitudinal overlapping layout mode, and more space is saved compared with the traditional transverse layout or longitudinal layout mode.
The technical scheme of the invention is as follows:
a multi-stage filtering EMC structure comprises a filtering fixed seat and an X capacitance plate; the body of the filtering fixing seat is an injection molding shell, two switching copper bars and one grounding copper bar are embedded in the injection molding shell, and two magnetic rings and two Y capacitors are fixedly installed in the injection molding shell in a glue pouring and welding mode; one ends of the two Y-shaped capacitor pins are respectively welded with the extending ends of the two switching copper bars, and the other ends of the two Y-shaped capacitor pins are welded with the grounding copper bars; and two ends of the X capacitor plate are respectively connected with the extending ends of the two switching copper bars in a locking way through screws.
Preferably, the X capacitor plate includes a PCB and an X capacitor, and the X capacitor is fixed to the PCB by soldering.
Preferably, the two magnetic rings are installed and fixed in the groove of the injection molding piece shell through a glue pouring process.
Preferably, the two Y capacitors are installed and fixed in a groove of an injection molding piece shell through a glue pouring process.
Preferably, the multi-stage filtering EMC structure is arranged in the controller shell when the direct current end is assembled, the high-voltage direct current cable at the direct current end penetrates through the controller shell and the magnetic ring in the filtering fixing seat, the terminal on the high-voltage direct current cable is locked and connected with the switching copper bar and the X capacitor plate on the filtering fixing seat through screws, and the terminal on the film capacitor in the controller shell is locked and connected with the switching copper bar through screws.
Preferably, the multi-stage filtering EMC structure changes the quantity and the layout mode of the magnetic ring, the X capacitor and the Y capacitor according to the filtering stage number, and the whole EMC filtering structure is adjusted according to the layout characteristics of the filter device.
Preferably, the magnetic ring is integrated on the direct current end, and the X capacitor and the Y capacitor are integrated inside the thin film capacitor.
Preferably, the X capacitor and the Y capacitor are integrated on a high-voltage filter plate, and the magnetic ring is independently packaged in the filter fixing seat.
The invention has the advantages that:
the multistage filtering EMC structure has the characteristics of high integration and small volume, and front and back 2 magnetic rings, 2Y capacitors and 1X capacitor are distributed in a certain space; the filter devices are fixed in the filter structure in a glue pouring, welding and screw locking mode. The EMC structure with the multi-stage filtering function saves the installation space of the direct current end of the controller and meets the EMC design requirement.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a top view of a filter holder;
FIG. 2 is a bottom view of the filter holder;
FIG. 3 is a schematic diagram of an X capacitor plate;
FIG. 4 is a top view of the assembly of a DC end of a multi-stage filtering EMC structure;
fig. 5 is a side view of a dc terminal assembly of a multi-stage filtering EMC structure.
Detailed Description
Example 1
As shown in fig. 1 and 2, the multi-stage filtering EMC structure of the present invention includes a filtering fixing base 1 and an X capacitor plate 2; the body of the filtering fixed seat 1 is an injection molding shell 6, two switching copper bars 9 and one grounding copper bar 10 are pre-embedded in the injection molding shell 6, and two magnetic rings 7 and two Y capacitors 8 are fixedly installed in a glue pouring and welding mode; the first magnetic ring 7 is installed and fixed in a groove of the injection molding piece shell 6 through a glue pouring process.
One ends of pins of the two Y capacitors 8 are respectively welded with the extending ends of the two switching copper bars 9, and the other ends of the pins are welded with the grounding copper bars 10; two ends of the X capacitor plate 2 are respectively connected with the extending ends of the two switching copper bars 9 in a locking way through screws. The two Y capacitors 8 are fixedly installed in a groove of the injection molding shell 6 through a glue pouring process, and the second magnetic ring 7 is fixedly installed in the groove of the injection molding shell 6 through the glue pouring process.
As shown in fig. 3, the X capacitor plate 2 includes a PCB 12 and an X capacitor 13, and the X capacitor 13 is fixed on the PCB 12 by soldering.
As shown in fig. 4 and 5, when the multi-stage filtering EMC structure is assembled at the dc end, the main parts of the assembly drawing include the high voltage dc cable 4, the controller housing 3, the film capacitor 5, and the filter fixing base 1 and the X capacitor plate 2 in the multi-stage filtering EMC structure.
The multistage filtering EMC structure is arranged in the controller shell 3, a high-voltage direct current cable 4 at a direct current end penetrates through the controller shell 3 and a magnetic ring 7 in the filtering fixing seat 1, a terminal on the high-voltage direct current cable 4 is connected with a switching copper bar 9 and an X capacitor plate 2 on the filtering fixing seat 1 in a locking mode through screws, and a terminal on a film capacitor 5 in the controller shell 3 is connected with the switching copper bar 9 in a locking mode through screws.
Example 2
The multi-stage filtering EMC structure changes the quantity and the layout mode of the magnetic rings, the X capacitors and the Y capacitors according to the filtering stage number, and the whole EMC filtering structure is adjusted according to the layout characteristics of the filter device.
Example 3
The magnetic ring 7 is integrated on the direct current end, and the X capacitor 13 and the Y capacitor 8 are integrated inside the thin film capacitor 5.
Example 4
X electric capacity 13, Y electric capacity 8 integration are on a high pressure filter board, and magnetic ring 7 encapsulates alone in filtering fixing base 1.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (8)
1. A multi-stage filtering EMC structure is characterized by comprising a filtering fixed seat (1) and an X capacitor plate (2); the body of the filtering fixed seat (1) is an injection molding shell (6), two switching copper bars (9) and a grounding copper bar (10) are pre-buried in the injection molding shell (6), and two magnetic rings (7) and two Y capacitors (8) are fixedly installed in a glue pouring and welding mode; one ends of pins of the two Y capacitors (8) are respectively welded with the extending ends of the two switching copper bars (9), and the other ends of the pins are welded with the grounding copper bar (10); the two ends of the X capacitor plate (2) are respectively connected with the extending ends of the two switching copper bars (9) in a locking way through screws.
2. Multilevel filter EMC structure according to claim 1, characterized in that the X-capacitor board (2) comprises a PCB board (12) and an X-capacitor (13), the X-capacitor (13) being fixed to the PCB board (12) by solder mounting.
3. The multilevel filter EMC structure of claim 2, wherein the two magnetic rings (7) are fixed in the grooves of the injection molded housing (6) by a potting process.
4. Multistage-filter EMC structure according to claim 3, wherein said two Y capacitors (8) are mounted and fixed in the injection-molded housing (6) recess by means of a potting process.
5. The multilevel filtering EMC structure of claim 4, wherein the multilevel filtering EMC structure is placed in a controller housing (3) when a DC end is assembled, a high voltage DC cable (4) at the DC end passes through the controller housing (3) and a magnetic ring (7) in the filtering fixing seat (1), a terminal on the high voltage DC cable (4) is locked and connected with the switching copper bar (9) on the filtering fixing seat (1) and the X capacitor plate (2) through a screw, and a terminal on the film capacitor (5) in the controller housing (3) is locked and connected with the switching copper bar (9) through a screw.
6. The multi-stage filtering EMC structure of any one of claims 1-5, wherein the multi-stage filtering EMC structure changes the number and layout of magnetic rings, X capacitors, Y capacitors according to the number of filtering stages, and the whole EMC filtering structure is adjusted according to the layout characteristics of the filter devices.
7. Multistage filter EMC structure according to any of claims 1-5, wherein the magnetic ring (7) is integrated on the dc terminal and the X-and Y-capacitors (13, 8) are integrated inside the thin film capacitor (5).
8. The multi-stage filter EMC structure of any of claims 1-5, wherein the X-capacitor (13) and the Y-capacitor (8) are integrated on a high voltage filter board, and the magnetic ring (7) is separately packaged in the filter holder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226629.3A CN111431496A (en) | 2020-03-27 | 2020-03-27 | Multistage filtering EMC structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226629.3A CN111431496A (en) | 2020-03-27 | 2020-03-27 | Multistage filtering EMC structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111431496A true CN111431496A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010226629.3A Pending CN111431496A (en) | 2020-03-27 | 2020-03-27 | Multistage filtering EMC structure |
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| Country | Link |
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| CN (1) | CN111431496A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071432A (en) * | 2021-04-13 | 2021-07-06 | 中国第一汽车股份有限公司 | Integrated vehicle inverter assembly and vehicle |
| CN113300588A (en) * | 2021-05-25 | 2021-08-24 | 重庆金康动力新能源有限公司 | High-voltage filter |
| CN113472193A (en) * | 2021-07-19 | 2021-10-01 | 一巨自动化装备（上海）有限公司 | Integrated filtering assembly |
| WO2024094671A1 (en) * | 2022-11-02 | 2024-05-10 | Zf Friedrichshafen Ag | Method for producing a filter device, in particular an emc filter, for a vehicle, and filter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130154766A1 (en) * | 2011-12-20 | 2013-06-20 | Schaffner Emv Ag | Feed through emc filter |
| CN103270696A (en) * | 2010-11-05 | 2013-08-28 | 沙夫纳Emv股份公司 | Emc filter circuit |
| CN204190606U (en) * | 2014-10-31 | 2015-03-04 | 许继电气股份有限公司 | A kind of current transformer electromagnetic interface filter |
| CN110391789A (en) * | 2019-07-30 | 2019-10-29 | 北京光华世通科技有限公司 | A kind of high current automobile filter |
| CN110400694A (en) * | 2019-08-02 | 2019-11-01 | 北斗航天汽车（北京）有限公司 | The thin-film capacitor and electric machine controller of integrated safety filter capacitor |
| CN210075074U (en) * | 2019-07-18 | 2020-02-14 | 上海元城汽车技术有限公司 | Direct current filtering structure, motor controller and vehicle |
-
2020
- 2020-03-27 CN CN202010226629.3A patent/CN111431496A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103270696A (en) * | 2010-11-05 | 2013-08-28 | 沙夫纳Emv股份公司 | Emc filter circuit |
| US20130154766A1 (en) * | 2011-12-20 | 2013-06-20 | Schaffner Emv Ag | Feed through emc filter |
| CN204190606U (en) * | 2014-10-31 | 2015-03-04 | 许继电气股份有限公司 | A kind of current transformer electromagnetic interface filter |
| CN210075074U (en) * | 2019-07-18 | 2020-02-14 | 上海元城汽车技术有限公司 | Direct current filtering structure, motor controller and vehicle |
| CN110391789A (en) * | 2019-07-30 | 2019-10-29 | 北京光华世通科技有限公司 | A kind of high current automobile filter |
| CN110400694A (en) * | 2019-08-02 | 2019-11-01 | 北斗航天汽车（北京）有限公司 | The thin-film capacitor and electric machine controller of integrated safety filter capacitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071432A (en) * | 2021-04-13 | 2021-07-06 | 中国第一汽车股份有限公司 | Integrated vehicle inverter assembly and vehicle |
| CN113300588A (en) * | 2021-05-25 | 2021-08-24 | 重庆金康动力新能源有限公司 | High-voltage filter |
| CN113472193A (en) * | 2021-07-19 | 2021-10-01 | 一巨自动化装备（上海）有限公司 | Integrated filtering assembly |
| WO2024094671A1 (en) * | 2022-11-02 | 2024-05-10 | Zf Friedrichshafen Ag | Method for producing a filter device, in particular an emc filter, for a vehicle, and filter device |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200717 |