WO2022228616A1 - Emv-filtervorrichtung aufweisend eine laminierte leiterstruktur; sowie leistungselektronikmodul - Google Patents
Emv-filtervorrichtung aufweisend eine laminierte leiterstruktur; sowie leistungselektronikmodul Download PDFInfo
- Publication number
- WO2022228616A1 WO2022228616A1 PCT/DE2022/100319 DE2022100319W WO2022228616A1 WO 2022228616 A1 WO2022228616 A1 WO 2022228616A1 DE 2022100319 W DE2022100319 W DE 2022100319W WO 2022228616 A1 WO2022228616 A1 WO 2022228616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductor structure
- filter device
- power electronics
- emc filter
- conductor
- Prior art date
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 131
- 239000003990 capacitor Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 description 74
- 239000000463 material Substances 0.000 description 17
- 238000009413 insulation Methods 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 4
- 239000012778 molding material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- HHXNVASVVVNNDG-UHFFFAOYSA-N 1,2,3,4,5-pentachloro-6-(2,3,6-trichlorophenyl)benzene Chemical compound ClC1=CC=C(Cl)C(C=2C(=C(Cl)C(Cl)=C(Cl)C=2Cl)Cl)=C1Cl HHXNVASVVVNNDG-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14329—Housings specially adapted for power drive units or power converters specially adapted for the configuration of power bus bars
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14327—Housings specially adapted for power drive units or power converters having supplementary functional units, e.g. data transfer modules or displays or user interfaces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0066—Constructional details of transient suppressor
Definitions
- EMC filter device comprising a laminated conductor structure; and power electronics module
- the invention relates to an EMC filter device for power electronics of an electrical machine, preferably an electrical machine used as a drive unit in a motor vehicle.
- the aim is to provide a filter device that functions as reliably as possible in the sense of a mains filter for use in power electronics, which on the one hand has a structure that is as compact as possible, in particular flat, and on the other hand is equipped with as few interfaces/contacts as possible.
- an EMC filter device for power electronics of an electrical machine which EMC filter device has an electrical conductor structure, at least one capacitance coupled to the conductor structure and at least one inductance interacting with the conductor structure, the conductor structure having the conductor structure at least has two individual conductor layers that are isolated from one another and is therefore designed as a laminated busbar or high-current circuit board.
- an EMC filter device is a filter device that ensures or improves the electromagnetic compatibility of a device, for example a power electronics module, to which the filter device is coupled.
- this EMC filter device can be integrated more easily into existing installation spaces, for example in a housing of an inverter unit, or the inverter unit can be designed to be more compact overall.
- cooling can be implemented more efficiently by designing the conductor structure as a laminated busbar.
- the number of necessary interfaces / contacts can be reduced to a minimum.
- the conductor structure is also constructed as compactly as possible.
- the conductor structure in its entirety is surrounded/encased by an insulating film on the outside.
- the at least one inductor has a core (preferably designed as a toroidal core) and the conductor structure is inserted/projects through this core. This also results in an arrangement that is as compact as possible.
- the at least one capacitance is connected to a terminal that can be further connected or is connected to a power supply, preferably a battery, which terminal is preferably in turn formed directly on the conductor structure, the structure is further simplified.
- the invention relates to a power electronics module for an electrical machine, with a capacitor arrangement and an EMC filter device according to the invention, which is electrically connected to the capacitor arrangement, according to at least one of the previously described embodiments.
- a thermally conductive layer/a thermally conductive material preferably in the form of a so-called “gap pad”/a mat, is provided between the conductor structure and an area fixed to the housing. This results in the most efficient possible cooling of the EMC filter device during operation.
- the conductor structure (at least partially) lie flat directly on the area fixed to the housing. This in turn further simplifies the structure.
- the inductances/cores of the EMC filter device are glued to the area fixed to the housing.
- a current input of the power electronics module is formed directly by the conductor structure and a current output of the power electronics module is formed by the capacitor arrangement.
- an EMC filter (EMC filter device) based on a laminated “busbar” (/a laminated busbar/busbar/conductor structure) is implemented.
- the laminated busbar comprises at least two electrically conductive plies/layers (conductive layers) that are insulated from one another.
- the laminated busbar is routed through cores (inductances).
- Capacitors (capacitors) are also provided on the laminated busbar; Connections that are further connected to a power supply are also provided.
- the terminals are preferably further connected to a power source such as a high voltage battery.
- FIG. 1 shows a plan view of an EMC filter device according to the invention according to a preferred exemplary embodiment as part of a power electronics module designed as an inverter unit,
- FIG. 2 shows a cross-sectional representation of the EMC filter device according to FIG.
- FIG. 3 shows a further cross-sectional illustration of the EMC filter device, with further components, including a current sensor and two side walls used for shielding, being visible in comparison to FIG. 2,
- FIG. 1 shows an EMC filter device 1 according to the invention in a clear manner.
- the EMC filter device 1 is implemented in this embodiment as an independent module, but in further embodiments according to the invention it is also directly formed as part of a power electronics module 20 / an inverter unit 11 .
- the inverter unit 11 then in turn forms a component of the power electronics module 20 indicated generally in FIG. 1/power electronics for an electrical machine.
- the EMC filter device 1 is thus used in power electronics of an electrical machine of a motor vehicle, which is preferably designed as a drive machine.
- the EMC filter device 1 has, as also shown in FIGS. 2 and 3 to see in more detail, a laminated conductor structure 2, which is implemented as a laminated busbar 5 here.
- the conductor structure 2 is also implemented as a circuit board, namely as a high-current circuit board.
- the conductor structure 2 alternatively also referred to as a busbar or busbar, has a plurality of conductor layers 6a, 6b, which are indicated in FIG. 2 and in FIG. 3 and are insulated from one another.
- the conductive layers 6a, 6b lie flat/coplanar on one another and form the conductor structure 2/busbar 5 as a whole. Between the conductive layers 6a, 6b, as also shown in Figs.
- an insulating film 7 is interposed, which is used directly to insulate the two conductive layers 6a, 6b relative to one another.
- the conductor structure 2 i. H. the entirety of conductive layers 6a, 6b is sealed from its outside by such an insulating film 7.
- the conductor structure 2 also consists of more than two, for example three or four, conductive layers 6a, 6b.
- the conductor structure 2 has an essentially plate-shaped structure. According to the design as an EMC filter device 1, the conductor structure 2 has two inductances 4a, 4b. A first inductor 4a has a first core 8a, and a second inductor 4b has a second core 8b. Each core 8a, 8b is designed as a ring core/ring-shaped. A section of the conductor structure 2 extends centrally through these cores 8a, 8b arranged next to one another. Two connections 10a, 10b are implemented on the conductor structure 2 towards a common side of the two inductances 4a, 4b and form a current input during operation.
- the two terminals 10a, 10b are connected to a power supply 9, preferably a high-voltage battery, during operation, as also indicated.
- the two connections 10a, 10b form not only a current input of the EMC filter device 1, but also a current input 16 of the inverter unit 11 and the power electronics module 20.
- two capacitances 3a, 3b in the form of capacitors are placed/applied on the conductor structure 2.
- the two capacitances 3a, 3b thus form two first electronic components 21, which are accommodated/mounted on the conductor structure 2.
- the current sensor 24 is attached to the conductor structure 2 via a weld point 36 .
- a third electronic component 23 in the form of a discharge resistor 25 is accommodated/attached to the conductor structure 2 (FIG. 1).
- the conductor structure 2 is connected to a capacitor arrangement 12 of the inverter unit 11 .
- a corresponding connection takes place, for example, in the area of a dividing line 33 .
- the conductor structure 2 is also formed in one piece with a rail 35 of the capacitor arrangement 12 , so that a plurality of capacitors 26 of the capacitor arrangement 12 are also arranged on the conductor structure 2 .
- the EMC filter device 1 is then a direct component of an inverter unit 11 having the capacitor arrangement 12 .
- the capacitors 26 are implemented as discrete capacitors 26 and are arranged in two parallel rows, for example.
- the inverter unit 11 has a housing 13, which is also referred to as an inverter housing.
- This housing 13 encloses both the capacitor arrangement 12 and the EMC filter device 1 with the conductor structure 2.
- the EMC filter device 1 has its own housing, which is then fixed to the housing 13 is attached and which can be referred to as the housing-fixed area 14 of the housing 13.
- the conductor structure 2 with its electronic components 21, 22, 23 and the inductances 4a, 4b is placed on a region 14 of the housing 13 that is fixed to the housing.
- the area 14 fixed to the housing is implemented here directly as a plate-shaped area of the housing 13 .
- the area 14 fixed to the housing is also designed in a different way as a heat sink, which is further connected to the housing 13 .
- FIGS. 2 and 3 there is a cover 29 which, together with the area 14 fixed to the housing, accommodates the EMC filter device 1 .
- the conductor structure 2 lies with its underside 19 (here indirectly) on the area 14 fixed to the housing.
- the electronic components 21 , 22 , 23 are attached towards their upper side 18 .
- the two cores 8a, 8b are connected to the area 14 fixed to the housing via an adhesive connection 34. It can also be seen here that the two connections 10a, 10b are implemented as so-called pins and protrude at least through the cover 29.
- a cover 27 that forms a shield is also formed by the cover 29 .
- the cover 27 is formed by the cover 29 and a side wall 30 fastened to the cover 29 .
- the cover 29 and side wall 30 thus form a shielding hood which is placed on the conductor structure 2 and is supported on the latter via the side walls 30 .
- an EMC seal 28 is interposed between an end face 31 of the side walls 30 and the conductor structure 2 / the top side 18 of the conductor structure 2 .
- This EMC seal 28 has a sealing strip 32 or is implemented as such a sealing strip 32 .
- the EMC seal 28 extends over the entire circumference of the side wall 30 and thus seals off an interior of the cover 27 from the environment. This shielding prevents interference signals from being coupled in.
- the side walls 30 are formed separately from the cover 29 and attached to it.
- the side wall 30 is welded to the cover 29 or attached in a non-positive manner, for example by means of fastening means.
- the side walls 30 are also designed as a one-piece material component of the cover 29 .
- a thermally conductive layer 15, which is implemented as a “gap pad” in a preferred variant, is inserted between the conductor structure 2 and the area 14 fixed to the housing.
- the layer 15 thus formed as a mat thus serves to dissipate waste heat from the conductor structure 2 in the direction of the area 14 fixed to the housing.
- the layer 15 is elastically deformable and compressed between the conductor structure 2 and the area 14 fixed to the housing.
- the layer 15 consists of some thermally conductive material, such as a thermally conductive filled composite.
- the layer 15 is alternatively implemented as a gel layer or as a casting compound.
- connections 10a, 10b form the entire current input 16 of the inverter unit 11/of the power electronics module 20
- an output of the capacitor arrangement 12 typically forms a current output 17 of the inverter unit 11/of the power electronics module, indicated schematically in FIG 20
- an EMC filter is constructed on the basis of a laminated busbar (busbar 5).
- the laminated busbar consists of at least two electrically conductive layers (conductive layers 6a, 6b, for example made of copper), which are (electrically) insulated from one another by an insulating film 7 .
- the outer surfaces are each insulated by an insulating film 7.
- the laminated busbar is made of two or more coplanar conductive plates (e.g. copper plates; also referred to as conductive layers 6a, 6b) with the insulating films 7 lying in between and lying on the outside.
- the laminated bus bar is inserted through the cores 8a, 8b (inductances).
- the passive components e.g. capacitors
- Current sensor 24 (DC side) and discharge resistor 25 can be connected directly to the laminated busbar (e.g. by means of laser welding).
- a DC link capacitor can be connected as a parallel connection of discrete capacitors (capacitors 3a, 3b) via the laminated busbar.
- Capacitors are fitted on the laminated busbar and connected to the DC(+) and DC(-) contacts (terminals 10a, 10b).
- the laminated busbar is connected to the HV battery via the DC(+) and DC(-) terminals (terminals 10a, 10b).
- the busbar can be attached tightly to the inverter housing 13 or to a cooling surface and be thermally connected to the inverter housing 13 via thermally conductive materials (eg gap pad).
- the cores 8a, 8b are placed in the inverter housing 13 and fixed with an adhesive (for example using epoxy adhesive) or with a casting material and thermally connected to the inverter housing 13.
- An EMC shielding wall (side wall 30) is integrated into the inverter cover (cover 27) and provided with an EMC seal 28. After the cover 29 is closed, the EMC filter and the DC input connector are protected from electromagnetic radiation coupling.
- Fig. 4 shows an alternative embodiment of the conductor structure 200.
- the conductor structure 200 is a multi-layer high-current printed circuit board or PCB 200.
- These conductor layers 600a, 600b can include copper.
- thin conductor layers 800 can be arranged on the outer surfaces of the printed circuit board material 700 in addition to the conductor layers 600a, 600b arranged or embedded on the inside. These thin conductor layers 800 may include copper.
- Fig. 5 shows a further alternative configuration of the conductor structure 201.
- the conductor structure 201 has two or more single-layer printed circuit boards.
- this conductor structure 201 there is a distance between single-layer printed circuit boards, which have a conductor layer 601a and an insulating printed circuit board material 701a or a conductor layer 601b and an insulating printed circuit board material 701b, in order to maintain an air gap.
- the distance is ensured by a spacer 803.
- the printed circuit boards 601a, 601b are fastened to one another, for example by means of a screw 801, which is electrically insulated from at least one of the conductor layers 601a, 601b by means of an insulation 802.
- Fig. 6 shows a further alternative configuration of the conductor structure 202.
- the conductor structure 202 has two or more single-layer printed circuit boards.
- an adhesive layer 901 is arranged between single-layer circuit boards, which have a conductor layer 602a and an insulating circuit board material 702a or a conductor layer 602b and an insulating circuit board material 702b, in order to attach the circuit boards to one another.
- Fig. 7 shows a further alternative configuration of the conductor structure 203.
- the conductor structure 203 has a plurality of conductor layers 603a, 603b and insulation layers 703a, 703b, 703c stacked one on top of the other.
- the stacking is such that one of the conductor layers 603a, 603b and one of the insulation layers 703a, 703b, 703c alternate in each case.
- the number of conductor layers 603a, 603b and insulating layers 703a, 703b, 703c is not limited to the number shown in FIG.
- the stacked conductor layers 603a, 603b and insulating layers 703a, 703b, 703c are not laminated with each other and are not firmly connected to each other.
- Fig. 8 shows a further alternative embodiment of the conductor structure 204.
- the conductor structure 204 has a plurality of conductor layers 604a, 604b and insulation layers 704a, 704b, 704c stacked on top of one another.
- the stacking is such that one of the conductor layers 604a, 604b and one of the insulation layers 704a, 704b, 704c alternate in each case.
- the number of conductor layers 604a, 604b and insulating layers 704a, 704b, 704c is not limited to the number shown in FIG.
- the stacked conductor layers 604a, 604b and insulation layers 704a, 704b, 704c are bonded together by respective adhesive layers 904 between respective adjacent layers.
- FIG. 9a to 9c show a further alternative configuration of the conductor structure 205. More precisely, Fig. 9a and Fig. 9b show method steps for producing the conductor structure 205 shown in Fig. 9c.
- a plurality of conductor layers 605a, 605b and at least one insulation layer 705 are stacked one on top of the other. The stacking is such that in each case one of the conductor layers 605a, 605b and the at least one insulation layer 705 alternate.
- the number of conductor layers 605a, 605b and insulating layer 705 is not limited to the number shown in Figs. 9a to 9c.
- the conductor layers 605a, 605b and insulation layer 705 stacked on top of one another are arranged in a molding mold 1000.
- FIG. 9b the mold is closed with a lid.
- a molding material is placed in the molding mold 1000 .
- the conductor structure 205 is removed from the molding mold.
- the result is the conductor structure 205 surrounded by the molding material 1100, such as an epoxy material.
- EMC filter device conductor structure a first capacitance b second capacitance a first inductance b second inductance busbar a first conductive layer b second conductive layer insulating film a first core b second core power supply 0a first connection 0b second connection 1 inverter unit 2 capacitor arrangement 3 housing 4 area fixed to the housing 5 layer 6 Current input 7 current output 8 top 9 bottom 0 power electronics module 1 first electronic component 2 second electronic component 3 third electronic component 4 current sensor Discharge resistor Capacitor Cover EMC seal Cover Side wall Front face Sealing tape Separating line Adhesive joint Rail Welding point Conductor structure a Conductor layer b Conductor layer Circuit board material Thin conductor layer Conductor structure a Conductor layer b Conductor layer a Circuit board materialb Circuit board material Screw Insulation Spacer Conductor structure a Conductor layer b Conductor layer a Circuit board materialb Circuit board material Adhesive layer Conductor structure 03a conductor layer 03b conductor layer 03a printed circuit board material 03b printed circuit board material
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22730052.2A EP4331328A1 (de) | 2021-04-29 | 2022-04-29 | Emv-filtervorrichtung aufweisend eine laminierte leiterstruktur; sowie leistungselektronikmodul |
DE112022002362.7T DE112022002362A5 (de) | 2021-04-29 | 2022-04-29 | Emv-filtervorrichtung aufweisend eine laminierte leiterstruktur; sowie leistungselektronikmodul |
CN202280030785.XA CN117280877A (zh) | 2021-04-29 | 2022-04-29 | 具有层叠导体结构的emc滤波器装置;和电力电子模块 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021110983.3A DE102021110983A1 (de) | 2021-04-29 | 2021-04-29 | EMV-Filtervorrichtung aufweisend eine laminierte Leiterstruktur; sowie Leistungselektronikmodul |
DE102021110983.3 | 2021-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022228616A1 true WO2022228616A1 (de) | 2022-11-03 |
Family
ID=82020959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2022/100319 WO2022228616A1 (de) | 2021-04-29 | 2022-04-29 | Emv-filtervorrichtung aufweisend eine laminierte leiterstruktur; sowie leistungselektronikmodul |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4331328A1 (de) |
CN (1) | CN117280877A (de) |
DE (2) | DE102021110983A1 (de) |
WO (1) | WO2022228616A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022203946A1 (de) | 2022-04-22 | 2023-10-26 | Magna powertrain gmbh & co kg | Verfahren zur Herstellung eines Inverters und Inverter |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010030917A1 (de) * | 2009-08-18 | 2011-04-07 | GM Global Technology Operations, Inc., Detroit | Elektromagnetisches Interferenzfilter für elektrische Systeme in Automobilen |
US20130119834A1 (en) * | 2010-10-27 | 2013-05-16 | Mitsubishi Heavy Industries, Ltd. | Inverter-integrated electric compressor |
DE102015219643A1 (de) * | 2015-10-09 | 2017-04-27 | Conti Temic Microelectronic Gmbh | Elektromotor-Wechselrichter |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011017314B4 (de) | 2011-04-15 | 2020-09-03 | Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg | Montageverfahren zur Montage einer Leiterplatte in einem Gehäuse sowie zugehöriges Montagewerkzeug |
DE202016105142U1 (de) | 2016-09-15 | 2016-12-08 | Abb Schweiz Ag | Batterieladegerät für ein spurgebundenes Fahrzeug |
DE102020206199A1 (de) | 2020-05-18 | 2021-11-18 | Zf Friedrichshafen Ag | Stromrichter |
-
2021
- 2021-04-29 DE DE102021110983.3A patent/DE102021110983A1/de not_active Withdrawn
-
2022
- 2022-04-29 EP EP22730052.2A patent/EP4331328A1/de active Pending
- 2022-04-29 WO PCT/DE2022/100319 patent/WO2022228616A1/de active Application Filing
- 2022-04-29 DE DE112022002362.7T patent/DE112022002362A5/de active Pending
- 2022-04-29 CN CN202280030785.XA patent/CN117280877A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010030917A1 (de) * | 2009-08-18 | 2011-04-07 | GM Global Technology Operations, Inc., Detroit | Elektromagnetisches Interferenzfilter für elektrische Systeme in Automobilen |
US20130119834A1 (en) * | 2010-10-27 | 2013-05-16 | Mitsubishi Heavy Industries, Ltd. | Inverter-integrated electric compressor |
DE102015219643A1 (de) * | 2015-10-09 | 2017-04-27 | Conti Temic Microelectronic Gmbh | Elektromotor-Wechselrichter |
Also Published As
Publication number | Publication date |
---|---|
EP4331328A1 (de) | 2024-03-06 |
DE112022002362A5 (de) | 2024-04-04 |
CN117280877A (zh) | 2023-12-22 |
DE102021110983A1 (de) | 2022-11-03 |
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