CN219068076U - Filter device for inverter - Google Patents
Filter device for inverter Download PDFInfo
- Publication number
- CN219068076U CN219068076U CN202221991276.7U CN202221991276U CN219068076U CN 219068076 U CN219068076 U CN 219068076U CN 202221991276 U CN202221991276 U CN 202221991276U CN 219068076 U CN219068076 U CN 219068076U
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- Prior art keywords
- filter
- filtering
- magnetic ring
- end magnetic
- copper bar
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- 238000001914 filtration Methods 0.000 claims abstract description 73
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052802 copper Inorganic materials 0.000 claims abstract description 62
- 239000010949 copper Substances 0.000 claims abstract description 62
- 239000003990 capacitor Substances 0.000 claims abstract description 55
- 239000003292 glue Substances 0.000 claims description 45
- 239000000565 sealant Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 230000036039 immunity Effects 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 17
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- Inverter Devices (AREA)
Abstract
The utility model relates to the field of filters, in particular to a filter device for an inverter. The filtering device for the inverter comprises a front-end magnetic ring (101) and an EMC filtering module (102), and is characterized in that: the EMC filter module (102) comprises a filter plate (207), filter capacitors (201, 205), a rear-end magnetic ring (203), a direct-current filter copper bar (204), a grounding copper bar (205) and a filter base (205); the filter plate (207) and the filter capacitors (201, 202) are electrically connected, and the assembled sub-assembly is a first assembly; the filter plate (207) and the direct current filter copper bar (204) form electric connection, and the assembled sub-assembly is a second assembly; and sleeving the rear end magnetic ring (203) on the direct current filtering copper bar (204) of the second component to form a third component. The utility model has compact structure and good noise immunity.
Description
Technical Field
The utility model relates to the field of filters, in particular to a filter device for an inverter.
Background
With the development of the electric automobile industry, the electric automobile has higher and higher requirements on core components thereof, particularly a power system of the whole automobile, and with the further compression of the available space of the whole automobile, the improvement of the integration level and the space utilization rate of the electric driving force assembly is a key consideration direction in the future; with the development of inverter technology, an inverter with reasonable spatial arrangement, small size, light weight and simple installation process is still a future development direction; along with the increasing integration level of the inverter, the environment of electromagnetic interference is more and more complex, and the inverter is taken as one of the main electronic components and is a radiation source, so that a filter device with excellent performance is required to meet the test requirements of the EMC of the whole vehicle.
The Chinese patent with the bulletin number of 208806720U discloses a filtering device of a motor controller and an automobile in the period of 30 of 04 month in 2019, and the magnetic ring fixing scheme provided by the utility model adopts screw and buckle connection, so that the occupied space is large; copper bars are directly welded on the filter capacitor, the copper bars are complex in design and high in die sinking cost.
The Chinese patent with the publication number of 215817841U discloses a mounting structure of a filter capacitor of a motor controller in 2022, 02 and 11 days, and the filter capacitor adopted by the utility model has a glue-free groove structure, a plurality of filter capacitors are placed in the whole mounting groove, the glue consumption can not be accurately controlled, and the glue consumption is large, so that the cost is wasted.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a filter with compact structure and good noise immunity, and discloses a filter device for an inverter.
The utility model achieves the aim through the following technical scheme:
the utility model provides a filter equipment for dc-to-ac converter, includes front end magnetic ring and EMC filter module, and front end magnetic ring and EMC filter module all locate as the trinity casing of envelope carrier, characterized by:
the EMC filter module comprises a filter plate, a filter capacitor A, a filter capacitor B, a rear-end magnetic ring, a direct-current filter copper bar, a grounding copper bar and a filter base;
the filter capacitor A and the filter capacitor B are positioned through a welding tool and a filter plate and are welded and fixed on the filter plate through four welding holes formed in the filter plate, so that the filter plate is electrically connected with the filter capacitor A and the filter capacitor B, and the assembled sub-assembly is a first assembly;
the direct current filter copper bar is provided with two riveted conductive copper columns, a plastic-coated part of the direct current filter copper bar is provided with a first filter capacitor and a second filter capacitor avoiding groove, a first filter plate on the first component is provided with two mounting holes, the first filter capacitor and the second filter capacitor penetrate through the avoiding grooves and are fixedly connected with the conductive copper columns on the direct current filter copper bar through the two mounting holes on the first filter plate by two screws, so that the filter plate and the direct current filter copper bar are electrically connected, and the assembled subassembly is a second component (the second component comprises the first component);
the rear end magnetic ring is in a hollowed-out structure, and is sleeved on the direct current filtering copper bar of the second component, and the rear end magnetic ring is not fixed at the moment to form a third component (the third component comprises the second component);
the filtering base of the EMC filtering module is provided with a rear-end magnetic ring, a glue groove B for fixing the filtering capacitor A and a glue groove A for fixing the filtering capacitor B, quantitative heat conduction pouring sealant is preset in the glue groove B and the glue groove A, and the rear-end magnetic ring is fixed on the filtering base;
the filter plate of the assembly III is provided with a first positioning pin hole, a third positioning pin hole and four mounting Kong Bing, the filter base is provided with two positioning pins and four BOSS columns which are matched with each other, one of the BOSS columns is provided with a grounding copper bar, the grounding copper bar is arranged in a groove on the BOSS column, the assembly III is positioned and mounted through pin hole matching and is connected and fixed to the filter base through four screws B, and the bottoms of the rear magnetic ring, the first filter capacitor and the second filter capacitor are contacted and bonded with a glue groove B and a preset heat conduction potting adhesive in the glue groove A;
two locating pin holes and four mounting holes are formed in a filtering base of the EMC filtering module, each mounting hole comprises a grounding point, and the grounding points are connected with the grounding copper bars, so that the filtering plate is electrically connected with the three-in-one shell.
The filtering device for the inverter is characterized in that: the rear end magnetic ring is fixed on the filtering base through the following structure: four glue grooves B are formed in the side walls of the two sides of the filtering base, four corresponding clamping structures are arranged on the two sides of the rear-end magnetic ring, each glue groove B corresponds to one clamping structure, after the side walls of the periphery of the glue groove C of the filtering base limit the rear-end magnetic ring, the rear-end magnetic ring is pressed towards the glue groove C along the vertical direction, and each group of corresponding glue grooves B and the corresponding clamping structures are buckled.
When the utility model is used, each part respectively plays the following roles:
general class: the screw plays a role in connection and fixation, the positioning pin/hole plays a role in positioning, the copper bar plays a role in diversion, and the pouring sealant plays a role in sealing, heat conduction and fixation;
the three-in-one shell is used as an envelope carrier and plays roles of integrated installation and supporting and fixing of internal and external parts;
the front magnetic ring plays roles in suppressing noise interference and filtering;
the filter board in the EMC filter module is used for connecting and fixing all parts of devices and filtering, the filter capacitor is used for reducing EMI/RFI caused by noise, the rear-end magnetic ring is used for inhibiting noise interference and filtering, the direct-current filter copper bar is used for connecting and fixing, conducting current is used for conducting, the grounding copper bar is used for grounding, and the filter base is used for supporting and fixing.
When the utility model is used for an inverter, two positioning pin holes and four mounting holes are formed on a filtering base of an EMC filtering module, and the four mounting holes are fixedly mounted with a three-in-one shell through screws; the direct current filtering copper bar comprises an EMC positive electrode filtering copper bar and an EMC negative electrode filtering copper bar, mounting holes are formed in two ends of the EMC positive electrode filtering copper bar and the EMC negative electrode filtering copper bar, and the direct current filtering copper bar and the EMC negative electrode filtering copper bar are mounted through screws so as to form electric connection with matching pieces on the inverter.
Aiming at the problems of low EMC performance, complex structure and large arrangement space of the existing filter device, the utility model provides a filter module scheme, which adopts the collocation design of the rear-end magnetic ring and the front-end magnetic ring, can improve the immunity of devices in different frequency bands, effectively improves the EMC performance of the device, has small arrangement space and simple structure, and simplifies the installation process while improving the space utilization rate. The device is provided with the glue dispensing groove of the rear-end magnetic ring and the filter capacitor, can contain quantitative pouring sealant, can perform accurate glue spraying, can avoid glue waste and saves cost.
The technical characteristics of the utility model are as follows:
1. the modularized filtering scheme adopts a matching scheme of a rear-end magnetic ring and a front-end magnetic ring, so that parasitic inductance is small, and EMC performance is improved;
2. the filter copper bar is designed in a stacked manner and provided with an avoiding groove;
3. the magnetic ring at the rear end is buckled with the filtering base by adopting a glue groove B, so that screw connection is abandoned;
4. a glue dispensing groove structure of the rear-end magnetic ring and the filter capacitor is arranged on the filter base.
Specifically, the utility model has the following beneficial effects:
the whole filtering device is designed and installed based on the filtering base, and the filtering copper bar is overlapped and provided with the avoiding groove of the filtering capacitor, so that the filtering capacitor is longitudinally installed in the groove, the arrangement space can be effectively reduced, and the arrangement is more compact;
the rear magnetic ring is buckled with the filtering base by adopting the glue groove B, and the screw connection is abandoned, so that the size of the body of the magnetic ring is reduced, and the space utilization rate is improved;
the filtering base is provided with the glue dispensing groove with the rear-end magnetic ring and the filtering capacitor, so that quantitative pouring sealant can be contained, accurate glue spraying can be performed, waste of glue can be avoided, and cost is saved.
Noun interpretation of related art terms:
EMI: the electromagnetic interference (emi) is applied to the substrate,
EMC: the electromagnetic compatibility is achieved by the fact that,
RFI: radio frequency interference.
Drawings
Figure 1 is a schematic view of the structure of the present utility model,
fig. 2 is an assembly schematic diagram of an EMC filter module according to the present utility model.
Description of the embodiments
The utility model is further illustrated by the following specific examples.
Examples
The filtering device for the inverter comprises a front-end magnetic ring 101 and an EMC filtering module 102, and the specific structure is as shown in fig. 1 and 2:
the EMC filter module 102 includes a filter board 207, a filter capacitor a 201, a filter capacitor b 202, a back-end magnetic ring 203, a dc filter copper bar 204, a grounding copper bar 205, and a filter base 206;
the filter capacitor A201 and the filter capacitor B202 are positioned through a welding tool and the filter plate 207 and are welded and fixed on the filter plate 207 through four welding holes formed in the filter plate 207, so that the filter plate 207 is electrically connected with the filter capacitor A201 and the filter capacitor B202, and the assembled sub-assembly is a first assembly;
two riveted conductive copper columns 2005 are arranged on the direct current filter copper bar 204, a plastic coated piece of the direct current filter copper bar 204 is provided with a filter capacitor A201 and a avoiding groove 2004 of a filter capacitor B202, a filter plate 207 on the first component is provided with two mounting holes A2003, the filter capacitor A201 and the filter capacitor B202 penetrate through the avoiding groove 2004 and are fixedly connected with the conductive copper columns 2005 on the direct current filter copper bar 204 through the two mounting holes A2003 on the filter plate 207 by two screws A2001, so that the filter plate 207 and the direct current filter copper bar 204 are electrically connected, and the assembled subassembly is a second component (the second component comprises a first component);
the rear end magnetic ring 203 is in a hollowed structure, the rear end magnetic ring 203 is sleeved on the direct current filtering copper bar 204 of the component II, and the rear end magnetic ring 203 is not fixed at the moment to form a component III (the component III comprises the component II);
the filtering base 206 of the EMC filtering module 102 is provided with a rear-end magnetic ring 203, a glue groove B2015 for fixing the filtering capacitor A201 and a glue groove A2010 for fixing the filtering capacitor B202, quantitative heat conduction pouring sealant is preset in the glue groove B2015 and the glue groove A2010, and the rear-end magnetic ring 203 is fixed on the filtering base 206;
in this embodiment, the rear-end magnetic ring 203 is fixed to the filter base 206 by the following structure: four glue grooves B2015 are formed in the side walls of the two sides of the filter base 206, four corresponding clamping structures 2018 are arranged on the two sides of the rear-end magnetic ring 203, each glue groove B2015 corresponds to one clamping structure 2018, after the side walls of the periphery of the glue groove C2016 of the filter base 206 limit the rear-end magnetic ring 203, the rear-end magnetic ring 203 compresses the glue groove C2016 in the vertical direction, so that each group of corresponding glue grooves B2015 and the corresponding clamping structures 2018 are buckled;
the third component is provided with a positioning pin hole a 2002, a positioning pin hole c 2020 and four mounting Kong Bing 2019 on the filtering plate 207, the filtering base 206 is provided with two positioning pins 2008, 2014 and four BOSS columns 2009 which are matched with each other, one of the BOSS columns 2009 is provided with a grounding copper bar 205, the grounding copper bar 205 is arranged in a groove on the BOSS column 2009, the third component is positioned and mounted by matching the pin holes, is connected and fixed to the filtering base 206 by four bolts b 2021, and enables the rear end magnetic ring 203, the bottom of the filtering capacitor a 201 and the bottom of the filtering capacitor b 202 to be in contact and bond with heat conduction potting preset in the glue groove b 2015 and the glue groove a 2010;
two positioning pin holes b 2013 and four mounting holes b 2012 are formed in the filter base 206 of the EMC filter module 102, the four mounting holes b 2012 include a grounding point 2011, and the grounding point 2011 is connected with the grounding copper bar 205, so that the filter board 207 is electrically connected with the three-in-one housing 1001.
When the embodiment is used, the following functions are respectively performed by each part:
general class: the screw plays a role in connection and fixation, the positioning pin/hole plays a role in positioning, the copper bar plays a role in diversion, and the pouring sealant plays a role in sealing, heat conduction and fixation;
the three-in-one shell 1001 is used as an envelope carrier and plays roles of integrated installation and supporting and fixing of internal and external parts;
the front-end magnetic ring 101 plays roles in suppressing noise interference and filtering;
the filter board 207 in the EMC filter module 102 is used for connecting and fixing various parts of devices and filtering, the filter capacitors 201 and 205 are used for reducing EMI/RFI caused by noise, the rear-end magnetic ring 203 is used for inhibiting noise interference and filtering, the direct-current filter copper bar 204 is used for connecting and fixing, the grounding copper bar 205 is used for grounding, and the filter base 205 is used for supporting and fixing.
When the embodiment is used for an inverter, two positioning pin holes 2013 and four mounting holes 2012 are formed on a filter base 206 of an EMC filter module 102, and the four mounting holes 2012 and a three-in-one housing 1001 are mounted and fixed by screws; the direct current filtering copper bar 204 comprises an EMC positive electrode filtering copper bar 2006 and an EMC negative electrode filtering copper bar 2007, and mounting holes are formed in two ends of the EMC positive electrode filtering copper bar 2006 and the EMC negative electrode filtering copper bar 2007, and are mounted through screws so as to form electric connection with matching pieces on the inverter.
Claims (2)
1. The utility model provides a filter equipment for dc-to-ac converter, includes front end magnetic ring (101) and EMC filter module (102), and front end magnetic ring (101) and EMC filter module (102) are all located on trinity casing (1001) as the envelope carrier, characterized by:
the EMC filter module (102) comprises a filter plate (207), a filter capacitor A (201), a filter capacitor B (202), a rear-end magnetic ring (203), a direct-current filter copper bar (204), a grounding copper bar (205) and a filter base (206);
the filter capacitor A (201) and the filter capacitor B (202) are positioned through a welding tool and the filter plate (207), and are welded and fixed on the filter plate (207) through four welding holes formed in the filter plate (207), so that the filter plate (207) is electrically connected with the filter capacitor A (201) and the filter capacitor B (202), and the assembled sub-assembly is a first assembly;
two riveted conductive copper columns (2005) are arranged on the direct current filter copper bar (204), a filter capacitor A (201) and a avoidance groove (2004) of a filter capacitor B (202) are arranged on a plastic coated part of the direct current filter copper bar (204), two mounting holes A (2003) are formed in a filter plate (207) on the first component, the filter capacitor A (201) and the filter capacitor B (202) penetrate through the avoidance groove (2004) and are fixedly connected with the conductive copper columns (2005) on the direct current filter copper bar (204) through the two mounting holes A (2003) on the filter plate (207) through two screw nails (2001), so that the filter plate (207) and the direct current filter copper bar (204) are electrically connected, and the assembled sub-component is the second component;
the rear end magnetic ring (203) is of a hollowed-out structure, and the rear end magnetic ring (203) is sleeved on the direct current filtering copper bar (204) of the second component to form a third component;
a filtering base (206) of the EMC filtering module (102) is provided with a rear-end magnetic ring (203) and a glue groove B (2015) for fixing a filtering capacitor A (201), and a glue groove A (2010) for fixing the filtering capacitor B (202), wherein heat-conducting pouring sealant is preset in the glue groove B (2015) and the glue groove A (2010), and the rear-end magnetic ring (203) is fixed on the filtering base (206);
the filter plate (207) of the assembly III is provided with a positioning pin hole A (2002), a positioning pin hole C (2020) and four mounting Kong Bing (2019), the filter base (206) is provided with two matched positioning pins (2008, 2014) and four BOSS columns (2009), one BOSS column (2009) is provided with a grounding copper bar (205), the grounding copper bar (205) is arranged in a groove on the BOSS column (2009), the assembly III is positioned and mounted through pin hole matching, is connected and fixed on the filter base (206) through four screws B (2021), and enables the bottoms of the rear-end magnetic ring (203) and the filter capacitor A (201) and the filter capacitor B (202) to be in contact adhesion with a heat conduction sealing glue preset in a glue groove B (2015) and a glue groove A (2010);
two locating pin holes (2013) and four mounting holes (2012) are formed in a filtering base (206) of the EMC filtering module (102), each mounting hole (2012) comprises a grounding point (2011), the grounding points (2011) are connected with the grounding copper bars (205), and the filtering plate (207) is electrically connected with the three-in-one shell (1001).
2. The filtering device for an inverter according to claim 1, characterized in that: the rear end magnetic ring (203) is fixed on the filtering base (206) through the following structure: four glue grooves B (2015) are formed in the side walls of the two sides of the filtering base (206), four corresponding clamping structures (2018) are arranged on the two sides of the rear-end magnetic ring (203), each glue groove B (2015) corresponds to one clamping structure (2018) respectively, after the side walls of the periphery of the glue groove C (2016) of the filtering base (206) limit the rear-end magnetic ring (203), the rear-end magnetic ring (203) compresses the glue groove C (2016) along the vertical direction, and each group of corresponding glue grooves B (2015) and the corresponding clamping structures (2018) are buckled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221991276.7U CN219068076U (en) | 2022-07-31 | 2022-07-31 | Filter device for inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221991276.7U CN219068076U (en) | 2022-07-31 | 2022-07-31 | Filter device for inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219068076U true CN219068076U (en) | 2023-05-23 |
Family
ID=86364573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221991276.7U Active CN219068076U (en) | 2022-07-31 | 2022-07-31 | Filter device for inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219068076U (en) |
-
2022
- 2022-07-31 CN CN202221991276.7U patent/CN219068076U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Filter device for inverters Granted publication date: 20230523 Pledgee: Shanghai Bank Co.,Ltd. Fengxian Branch Pledgor: GLOBAL INTELLIGENT POWER TECHNOLOGY (SHANGHAI) CO.,LTD. Registration number: Y2024980039837 |