EP4197014A1 - Bobine pfc couplée - Google Patents

Bobine pfc couplée

Info

Publication number
EP4197014A1
EP4197014A1 EP21762599.5A EP21762599A EP4197014A1 EP 4197014 A1 EP4197014 A1 EP 4197014A1 EP 21762599 A EP21762599 A EP 21762599A EP 4197014 A1 EP4197014 A1 EP 4197014A1
Authority
EP
European Patent Office
Prior art keywords
charging device
pfc
board
phase
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21762599.5A
Other languages
German (de)
English (en)
Inventor
Tim KARCHER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innolectric AG
Original Assignee
Innolectric AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innolectric AG filed Critical Innolectric AG
Publication of EP4197014A1 publication Critical patent/EP4197014A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14—Conductive energy transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4216—Arrangements for improving power factor of AC input operating from a three-phase input voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/30—AC to DC converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to on-board charging electronics according to the features in the preamble of FIG.
  • This traction battery is charged when the electric vehicle is idle by connecting it to an external voltage source.
  • connection options and supply voltages for carrying out the charging process are available.
  • the supply voltage is 100V - 500V with a frequency of 50 - 60 Hz.
  • power electronics are used, which transform the different supply voltages to a charging voltage, so that the traction battery in the electric vehicle can be charged.
  • an on-board charger Such on-board charging electronics can generally be connected to single-phase networks (typically PL-i and N conductors) or three-phase networks (PL-i — PL 2 - PL 3 conductors, with/without N conductor) operate.
  • the OBC essentially transforms the 50 Hz sinusoidal AC voltage (supply voltage) into a DC voltage.
  • the OBC can also create potential-free conditions between the vehicle and the supply network with the help of an integrated transformer.
  • AFE active front ends
  • PFC power factor correction
  • a PFC choke is formed from an inductance, and therefore a wound coil. Such a coil also has a winding core.
  • the object of the present invention is to show, based on the prior art, on-board charging electronics that have a reduced weight and a has lower power loss with simultaneously increased effectiveness and improved voltage conversion.
  • An on-board charging device is therefore an on-board charger. This is used in an electric motor vehicle or a hybrid vehicle, generally referred to below as an electric motor vehicle.
  • the on-board charging device is installed in the electric car. For this purpose, it has a housing.
  • the housing has at least one electrical input port and at least one electrical output port.
  • Power electronics are arranged in the housing.
  • the power electronics include at least one voltage converter and at least two PFC chokes.
  • the PFC chokes are designed as respective inductors.
  • Each PFC choke is formed by a coil on a U-shaped core. According to the invention, the openings of the U-shape are arranged pointing in the same direction.
  • More than two, in particular more than three, particularly preferably six, U-shaped winding cores can be arranged. At least one coil is then wound onto each winding core to form an inductance.
  • the coil can be wound up individually, but it can also be wound onto a respective web of the U-shape, ie two coils on one winding core.
  • the respective U-shaped winding cores are arranged directly next to one another.
  • directly next to one another means that they are arranged electrically separated from one another, for example by means of an air gap and/or an insulating material between the winding cores.
  • the air gap is kept as small as possible.
  • an electrical insulating material can be arranged in the air gap.
  • Each individual inductance is thus in the Power electronics associated with a conductor.
  • Each individual inductance is preferably assigned to an intermediate circuit.
  • Each inductance is particularly preferably assigned to a conductor in the intermediate circuit.
  • a further significant advantage is that the winding initially generates a magnetic field in the winding core, in particular a direction of magnetic flow, when a voltage is applied.
  • the magnetic fields are formed in opposite directions, so that the two magnetic fields compensate or neutralize each other, which occurs at least partially, in particular almost completely.
  • the power loss generated by the magnetic flux and the associated heat dissipation are thus significantly minimized. This increases the efficiency of the on-board charging device.
  • further cooling measures for example liquid cooling or ventilation cooling, can be reduced since less heat energy is generated overall due to power loss.
  • the design of the on-board charging electronics can also be smaller because, for example, heat sinks or the like can be dimensioned smaller or are no longer necessary.
  • the U-shaped winding cores are thus physically arranged in series, but are electrically separated or insulated from one another.
  • the U-shaped winding core which is arranged last in this physical row thus has a U-shaped opening which points into the "empty".
  • a rod is particularly preferably arranged here, for example a flat rod. This bar then ensures that in particular the magnetic flux in this last U-shaped winding core is conducted through the flat bar.
  • a U-shaped winding core is used to form a PFC choke using an inductor.
  • the coil wound onto the winding core can be designed in such a way that there are two coils which are electrically connected to one another and are wound onto the webs of the U-shape.
  • an HF litz wire is used as the conductor or litz wire for producing the winding.
  • HF stands for high frequency.
  • Such an HF litz wire consists of many thin wires, each wire having a diameter of about 0.05 mm. The wires are preferably twisted into a bundle. The bundle itself then has a diameter of 1 - 3 mm. The choke is preferably wound from such a bundle.
  • the U-shaped winding core itself has a cross section that is round, but preferably rectangular.
  • the cross-sectional area of the winding core is particularly preferably from 100 mm 2 to 1000 mm 2 . For example, this can be realized with a rectangular cross section of 10 ⁇ 10 mm up to 32 ⁇ 32 mm.
  • the on-board charger is particularly preferably connected to a three-phase network.
  • three conductors are designed as each phase.
  • a neutral conductor is also provided.
  • a protective conductor is provided as an option.
  • At least one PFC choke is particularly preferably assigned to each phase.
  • a PFC choke can also be assigned to the neutral conductor.
  • An intermediate circuit with a capacitor is particularly preferably assigned to each phase. In this case, each intermediate circuit is also connected to the neutral conductor.
  • a PFC choke is then particularly preferably arranged in each phase and in each case to the neutral conductor, so that a total of six PFC chokes are used in a preferred arrangement.
  • Figure 1 is a block diagram of an on-board charger in one
  • Figure 2 shows the power electronics in an on-board charger with an intermediate circuit
  • FIG. 3 the power electronics with three intermediate circuits
  • FIG. 4 shows an arrangement of the PFC chokes according to the prior art
  • FIG. 5 shows an arrangement of the PFC choke according to the invention
  • FIG. 6 shows an arrangement according to the invention of the PFC chokes with three intermediate circuits in a three-phase network.
  • FIG. 1 shows the arrangement of an on-board charging device 1 according to the invention in an electric motor vehicle 2 .
  • the external charging socket 4 provides a supply voltage 6 ready.
  • the on-board socket 3 is electrically connected to the on-board charging device 1 .
  • the on-board charging device 1 has at least one electrical input connection 7 .
  • the on-board charging device 1 has an electrical output connection 8 which is coupled to a traction battery 9 of the electric motor vehicle 2 .
  • Further electrical input connections or output connections 10 can be present, for example an input connection of the vehicle battery, in particular with regard to a communication connected thereto.
  • a communication network of the electric motor vehicle 2 for example a CAN bus, can also be connected. This can also be cooling connections.
  • a mains filter 11 is then arranged in particular in the on-board charging device 1, for example in the form of an EMI filter. This is then followed by a PFC choke 12, in turn followed by a voltage converter or transformer 13 for converting the supply voltage 6 into a charging voltage and a optional rectifier 14, which is then electrically coupled to the actual traction battery 9.
  • FIG. 2 shows the power electronics 15 within the on-board charging device 1.
  • a three-phase network is connected here, based on a first phase PLi, a second phase PL 2 , a third phase PL 3 and a neutral conductor N. It can optionally be a non shown protective conductor must be present.
  • a PFC choke 12 is coupled to each phase. In turn, these are electrically connected to the transformer 13 via a respective switch Si, S 2 , S 3 .
  • the switches can be formed by transistors (MOS, SiC-MOS, IGBTs or thyristors), for example. Alternatively or additionally, the switches can also be formed by diodes or mixed forms of the aforementioned components. Also provided is a capacitor K connected in parallel.
  • FIG. 3 shows a structure analogous to FIG. 2.
  • an intermediate circuit is formed for each phase PLi , PL2, PL3.
  • each intermediate circuit represents a voltage source that must not be directly connected to one another.
  • Six PFC chokes 12 are arranged to limit the current.
  • Each PFC choke 12 is thus formed by an inductor Li to L 6 . These are connected via switches Si to Sß with the respective transformer 13 and an optional rectifier 14 downstream of this.
  • the rectifiers 14 are coupled to the traction battery 9 .
  • FIG. 4 now shows a structure of a respective PFC choke 12 in the form of an inductance, as is known from the prior art.
  • two winding cores 16 are provided, which are arranged in opposite directions towards one another.
  • the electrical connections A1-B1 and A6-B6 are shown as examples in FIG.
  • Each winding 17 comprises a valley area 21 of the egg-shaped winding core 16.
  • An air gap 23 is arranged between the two cores.
  • FIG. 5 now shows the approach according to the invention.
  • a respective PFC choke 12 is formed by a U-shaped winding core 16.
  • the windings 17 of an inductance L1 to L6 are formed in particular on the two opposite webs 18 of the respective U-shaped winding core 16.
  • the respective opening 19 of the U-shaped winding core 16 is arranged oriented in the same direction.
  • the U-shaped hubs 16 are physically arranged in series with one another.
  • the openings 19 are arranged pointing oriented in a same direction. In the example of FIG. 5, this means arranged pointing to the right in relation to the image plane.
  • a magnetic flux 20 arising in each case from two adjacent PFC chokes 12 is thus neutralized in a valley region 21 of the PFC choke 12. As a result, the power loss can be reduced. There is thus a compensation in this area of the magnetic flux.
  • a rod 22 is arranged on the last PFC choke 12 on the right, referred to in the image plane, in order to conduct the magnetic flux 20 here as well.
  • this results in a significantly more compact design of the individual inductances Li to Le in relation to one another.
  • an insulating material (not shown) can optionally be arranged in the air gap 23 between two adjacent inductors L 1 to L 6 .
  • the size of the air gap (distance between the winding cores) and the arrangement/selection of the insulating material can be used to adjust the inductance of the PFC choke on the left in relation to the image plane.
  • the air gap preferably has a size of 100 ⁇ m to 3 mm.
  • FIG. 6 shows an arrangement with six PFC chokes 12 or six inductances Li to L 6I which the present invention applies to a circuit arrangement with three intermediate circuits according to FIG.
  • a rod 22 is arranged at the end.
  • the rod preferably has the same cross-sectional area compared to the winding cores 16.
  • Each of the two inductances Li to L 6 arranged in an intermediate circuit relative to one another are arranged electrically in series in a respective conductor according to FIG. This results in a magnetic flux 20 running in the same orientation in the winding core 16, such that a compensation 24 of the magnetic flux 20 results in a valley region 21 of at least one inductance Li to L 6 .
  • the circular magnetic flux in FIG. 6 corresponds to a uniform (e.g.: positive) current flow from top to bottom (relative to the image plane) for all Li to Le, so that the flux is compensated in each case in area 24 and not added. If you now look at Figure 3, due to the power structure, with a positive current flow from A1 to B1, the current from B2 to A2 is positive. For this reason, the connections Ax and Bx in FIG. 6 must be swapped over alternately at the top and bottom so that the compensation 24 is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un dispositif de charge (OBC) (1) conçu pour un véhicule automobile électrique (2), comprenant un boîtier qui comporte au moins une borne d'entrée (7) électrique et au moins une borne de sortie (8) ainsi qu'un système électronique de puissance (15) disposé dans le boîtier qui comprend au moins un transformateur de tension et au moins deux bobines PFC (12), chaque bobine PFC (12) étant constituée d'un noyau d'enroulement (16) en forme de U, ces noyaux d'enroulement (16) étant disposés directement les uns à côté des autres, les ouvertures (19) dans la forme en U étant agencées de manière à être orientées dans la même direction.
EP21762599.5A 2020-08-12 2021-08-11 Bobine pfc couplée Pending EP4197014A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020121245.3A DE102020121245A1 (de) 2020-08-12 2020-08-12 Gekoppelte PFC-Drossel
PCT/DE2021/100685 WO2022033633A1 (fr) 2020-08-12 2021-08-11 Bobine pfc couplée

Publications (1)

Publication Number Publication Date
EP4197014A1 true EP4197014A1 (fr) 2023-06-21

Family

ID=77543270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21762599.5A Pending EP4197014A1 (fr) 2020-08-12 2021-08-11 Bobine pfc couplée

Country Status (3)

Country Link
EP (1) EP4197014A1 (fr)
DE (1) DE102020121245A1 (fr)
WO (1) WO2022033633A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204808997U (zh) 2015-07-09 2015-11-25 台达电子企业管理（上海）有限公司 磁性组件及其适用的电源系统
EP3133614B1 (fr) * 2015-08-18 2019-11-20 Delta Electronics (Thailand) Public Co., Ltd. Composant magnétique intégré
WO2017171158A1 (fr) 2016-03-29 2017-10-05 엘에스산전 주식회사 Ensemble de module obc pour véhicule électrique
KR102486104B1 (ko) 2018-04-03 2023-01-09 현대자동차주식회사 전기 자동차의 충전 장치

Also Published As

Publication number Publication date
DE102020121245A1 (de) 2022-02-17
WO2022033633A1 (fr) 2022-02-17

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