WO2019238544A2 - Carte de circuit imprimé, transformateur et agencement comprenant une carte de circuit imprimé ou un transformateur - Google Patents

Carte de circuit imprimé, transformateur et agencement comprenant une carte de circuit imprimé ou un transformateur Download PDF

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Publication number
WO2019238544A2
WO2019238544A2 PCT/EP2019/064895 EP2019064895W WO2019238544A2 WO 2019238544 A2 WO2019238544 A2 WO 2019238544A2 EP 2019064895 W EP2019064895 W EP 2019064895W WO 2019238544 A2 WO2019238544 A2 WO 2019238544A2
Authority
WO
WIPO (PCT)
Prior art keywords
connection
circuit board
printed circuit
connections
strip conductor
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.)
Ceased
Application number
PCT/EP2019/064895
Other languages
German (de)
English (en)
Other versions
WO2019238544A3 (fr
Inventor
Johannes Dehn
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.)
Trumpf Huettinger GmbH and Co KG
Original Assignee
Trumpf Huettinger GmbH and Co KG
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
Priority claimed from DE102018209371.7A external-priority patent/DE102018209371B4/de
Priority claimed from DE202018107224.2U external-priority patent/DE202018107224U1/de
Priority claimed from DE202018107223.4U external-priority patent/DE202018107223U1/de
Priority claimed from DE202018107226.9U external-priority patent/DE202018107226U1/de
Application filed by Trumpf Huettinger GmbH and Co KG filed Critical Trumpf Huettinger GmbH and Co KG
Publication of WO2019238544A2 publication Critical patent/WO2019238544A2/fr
Publication of WO2019238544A3 publication Critical patent/WO2019238544A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
    • H05K1/0265—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board characterized by the lay-out of or details of the printed conductors, e.g. reinforced conductors, redundant conductors, conductors having different cross-sections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips
    • H01F27/2852—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • H05K1/112—Pads for surface mounting, e.g. lay-out directly combined with via connections
    • H05K1/113—Via provided in pad; Pad over filled via
    • 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
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0335—Layered conductors or foils
    • H05K2201/0352—Differences between the conductors of different layers of a multilayer
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/07—Electric details
    • H05K2201/0776—Resistance and impedance
    • H05K2201/0792—Means against parasitic impedance; Means against eddy currents
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09372—Pads and lands
    • H05K2201/09427—Special relation between the location or dimension of a pad or land and the location or dimension of a terminal
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09672—Superposed layout, i.e. in different planes
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/0979—Redundant conductors or connections, i.e. more than one current path between two points
    • 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
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/1028—Thin metal strips as connectors or conductors
    • 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
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/15—Position of the PCB during processing
    • H05K2203/1572—Processing both sides of a PCB by the same process; Providing a similar arrangement of components on both sides; Making interlayer connections from two sides
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H05K3/3415—Surface mounted components on both sides of the substrate or combined with lead-in-hole components
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/42—Plated through-holes or plated via connections
    • H05K3/429—Plated through-holes specially for multilayer circuits, e.g. having connections to inner circuit layers

Definitions

  • the invention relates to a printed circuit board which has an alternating current component which is connected to a connection arrangement via a first line and via a second line, the first and second lines running at least in sections parallel and in a height direction of the conductors - Card are spaced, and the connection arrangement has a first connection which is electrically conductively connected to the first line and a second connection which is electrically conductively connected to the second line, which are spaced apart in a vertical direction of the circuit card.
  • the invention relates to an arrangement comprising a circuit card according to the invention and a strip conductor connected to it.
  • the invention relates to a transformer with a first and a second winding, at least one winding being designed as a strip winding from a strip conductor.
  • the invention relates to an arrangement comprising a circuit card according to the invention and a transformer according to the invention.
  • the use of a printed circuit board according to the invention, a transformer according to the invention and / or an arrangement according to the invention for carrying an alternating current also falls within the scope of the invention.
  • the object of the present invention is therefore to create a possibility of being able to operate a printed circuit board with an AC component, a transformer and an arrangement described above with as little loss as possible.
  • this object is achieved by a circuit board which has an AC component which is connected to a connection arrangement via a first line and a second line, the first and the second line running at least in sections in parallel and in one Height direction of the circuit board are spaced.
  • the connection arrangement has a first connection, which is electrically conductively connected to the first line, and a second connection, which is electrically conductively connected to the second line, which are spaced apart in a vertical direction of the circuit board.
  • One of the connections is arranged in a first position, in particular on an upper side, and one of the connections is arranged in a second position, in particular on an underside, of the circuit board.
  • the connections are designed for Contact with two parallel strip conductor sections.
  • the strip conductor sections can be sections of one or more strip conductors.
  • the strip conductor sections can be connection ends of a strip conductor or of different strip conductors.
  • the strip conductor sections can be spaced apart in a vertical direction of a strip conductor.
  • the connections are designed such that the strip conductor sections can be connected to the connections in such a way that the ratio of the spacing of the strip conductor sections at the connections to the spacing of the lines is less than ten. In particular, the ratio of the spacing of the connections to the spacing of the lines can be less than ten.
  • the distance between two connections, conductors, conductor sections or lines is determined by the distance between the respective opposite surfaces with the shortest distance.
  • the connections can be arranged one above the other.
  • connections can be arranged essentially congruently.
  • the area that is spanned by the spacing or a displacement of the connections can thereby be reduced.
  • This in turn means that an effective inductance is reduced and in particular can be implemented without a sudden transition of the inductance in the connection area.
  • the distance between the strip conductor sections that can be connected to the connections can be continued in the printed circuit board without a large change in distance. It was recognized that precisely the losses which are often particularly difficult to reduce in the connection area and which are attributable to the ski effect and the proximity effect or a combination of both effects can be significantly reduced with the arrangement described.
  • a skin effect is understood to mean an effect in which the current density in the interior of a conductor is lower in electrical conductors through which high-frequency alternating current flows than in the outer regions.
  • the cause of the skin effect is that the alternating fields penetrating the conductor are largely dampened before the inside of the conductor is reached due to the high conductivity of the material.
  • the proximity effect is understood to mean the increase in the ohmic resistance for adjacent conductors through which alternating current flows compared to a single conductor through which the same alternating current flows. Inhomogeneous current density and eddy current losses are seen as the cause, but also with parallel led conductors can occur. It is usually described on windings of transformer cores.
  • connections are advantageously designed such that the ratio of the spacing of the strip conductor sections at the connections to the spacing of the lines is less than five, particularly advantageously less than three, in particular less than two, in particular less than 1.2.
  • the ratio of the spacing of the connections to the spacing of the lines is advantageously less than two.
  • the ratio of the spacing of the connections to the spacing of the lines is particularly advantageous is less than 1.2.
  • the invention relates to an arrangement comprising a printed circuit board according to the invention and at least one strip conductor, with at least two connecting ends of the strip conductor or the strip conductor in sections in parallel and are arranged at a distance in a vertical direction of the strip conductor and are connected to the connections of the circuit card.
  • the alternating current component of the printed circuit board can be, for example, an alternating current source or an alternating current sink.
  • it can be a transformer or an inverter.
  • the inverter can be designed to carry currents in the frequency range 5 kHz to 200 kHz, in particular in the frequency range 10 kHz to 100 kHz, preferably in the frequency range 20 kHz to 70 kHz. It was recognized that the losses caused by the skin effect can already be very large in this area. It was also recognized that the losses caused by the proximity Effect in this frequency range can be significantly reduced by the arrangement.
  • the inverter can be designed to carry an average current greater than 10 A, in particular greater than 20 A, preferably greater than 50 A, very preferably greater than 100 A. Limiting the losses is particularly important at these currents, since the heat development is already relatively large.
  • the first and the second connection can each be designed for the electrical connection to a strip conductor or strip conductor section.
  • a strip conductor always means a conductor whose cross section is larger (wider) in one direction than in the direction perpendicular thereto, in particular more than 2 times larger (wider), in particular more than 5 times larger (wider), in particular more than 10 times larger (wider).
  • a ribbon conductor for the arrangement described can e.g. 0.5 mm to 2 mm thick and 0.5 cm to 5 cm wide.
  • a strip conductor can be constructed from rigid material, for example copper, aluminum or other electrically conductive materials, but it can also be made from flexible material, e.g. be constructed from a wire mesh of the aforementioned materials, which is formed into a band.
  • the connections can be designed to be connected to an electrical component that has a strip conductor.
  • connections can be designed to contact a strip conductor over its full width, in particular over a large area. As a result, the inductance can be reduced.
  • the connections can be designed in such a way that the distance between the lines on the circuit card and the distance between the strip conductor sections fed in do not differ by more than the thickness of both lines of the circuit card.
  • connection can be flat, in particular as connection surfaces. This facilitates the contacting of strip conductors and can further reduce losses due to the low contact resistance.
  • the connections can have a width which corresponds to 80% to 120% of the width of the conductor connected in each case. The connections can thus have essentially the same width as the conductors connected to them. In this way too, the spanned area can be kept very small and the inductance can thereby also be kept small, which in turn reduces losses.
  • the first and the second conductor can be designed as a conductor track.
  • a conductor track can be a copper conductor track on a printed circuit board (PCB). It can have a thickness greater than 30 pm. It can have a width greater than 0.5 cm.
  • the circuit card can be designed as a multi-layer circuit card and the conductors and / or conductor tracks can be arranged in different layers of the circuit card.
  • the first and the second conductor can each be arranged in an inner layer of the circuit card.
  • the conductors can be connected to the respective assigned connections by means of vias. The connections can thus be arranged in a vertical direction of the circuit board at a distance from the respective conductor parallel to the latter.
  • the circuit board can, in particular in the area of the connection arrangement, have a through opening for the passage of a conductor, in particular a connection end of a strip conductor. This can be particularly advantageous if the AC component is designed as a transformer. A connection end of the transformer can thus be guided from an upper side of the circuit card through the circuit card to a connection on the lower side of the circuit card.
  • the through opening can be arranged so close to the connection arrangement that the conductor guided through the through opening, in particular the connection end, can be guided equidistantly from the second conductor, in particular connection end, which can be contacted to the connection arrangement without being guided through the through opening ,
  • a transformer with a first and a second winding also falls within the scope of the invention, at least one winding being designed as a strip winding from a strip conductor, the connection ends of the strip conductor being arranged in sections in parallel and spaced apart in a vertical direction of the strip conductor.
  • Transformers that have a strip winding from a strip conductor are particularly suitable for carrying high currents.
  • Losses can occur at high frequencies and high currents in the supply lines or in the connection ends of the transformers. If the connection ends are now arranged at least in sections in parallel and spaced apart in a vertical direction of the strip conductor, the current is conducted bifilarly in the connection ends.
  • bifilar current conduction is the conduct of oppositely flowing current, in particular alternating current, in two adjacent conductors, in which the lines are routed so close that the magnetic fields that are generated by the current flow cancel each other out or at least significantly reduce it. This leads to a reduced inductance and thus reduced losses.
  • the transformer can have a third winding.
  • the third winding can also be designed as a ribbon winding from a further ribbon conductor. This can further reduce losses.
  • the connection ends of the further strip conductor can also be arranged in sections in parallel and spaced apart in a vertical direction of the strip conductor.
  • the connection ends can be arranged at least partially overlapping. They are preferably arranged at least largely congruently. A largely congruent arrangement is recognized when more than 75% of the area is covered. As a result, the spanned area can be kept small, which also reduces the inductance.
  • the invention relates to an arrangement comprising a printed circuit board according to the invention and a transformer according to the invention, each connection end of the strip conductor with in each case one of the connections of the printed circuit card is electrically connected.
  • the arrangement according to the invention of the connections on the circuit card and the connection ends of the transformer creates an electrically conductive connection between the transformer and the circuit card, which is particularly low-induction. Losses can thus be reduced at high currents.
  • Both the band conductor and the first and second conductors can be designed to carry a current greater than 20 A at a frequency greater than 1 kHz. If the transformer has several strip conductors, each connection end of the strip conductor can be connected in an electrically conductive manner to one of the connections on the circuit card.
  • connection end in particular both connection ends
  • a connection device which can be locked with or without tools, in particular also detachable without destruction, in particular bolt-like connection device, in particular screw, in particular an insulated screw
  • bolt-like connection device in particular screw, in particular an insulated screw
  • a screw with an insulating sleeve can be used for the mechanical connection of two connection ends to the circuit board.
  • the connection between the circuit board and the transformer is also bifilar. This means that high currents, for example of a battery voltage inverter, can be carried with little loss.
  • the contacting also remains reliable and has a low resistance and is therefore low-loss.
  • Such a connecting device can be used in addition for the mechanical connection of the circuit board to a housing or for contacting further connections, in particular cables, e.g. of measuring sensors.
  • Such a connecting device can be detached and reattached for test purposes and during commissioning or when replacing defective parts.
  • connection end can be electrically conductively connected to a connection of the printed circuit board by means of a plated-through hole.
  • connection end can be soldered in, for example by means of tin or zinc.
  • connection end is soldered to a connection on the top or the bottom of the circuit board.
  • connection ends can be electrically and mechanically connected to the circuit board in the same way or in different ways.
  • both connection ends can be kept in electrical contact with the associated connection by means of a connecting device, in particular a screw, and can also be fixed on the circuit board by the connecting device, in particular a screw. It is also conceivable that one of the connection ends by means of a connecting device, in particular
  • Screw is held in electrical contact with the assigned connection and is also fixed to the circuit board by the connecting device, in particular screw, and the other connection end is soldered flat to a connection or is soldered in a through-contact. It is also conceivable that both connection ends are soldered flat to assigned connections on the printed circuit board, or both connection ends are soldered in vias, or one connection end is soldered flat and one connection end is soldered in a via. The contact remains reliable and long-lasting, low-resistance and therefore low-loss.
  • connection ends and the conductors can be guided in an uninterrupted bifilar manner. This results in a particularly low-inductance arrangement.
  • the transformer can be arranged on the circuit board and the connection ends can be connected in an electrically conductive manner to the connection arrangement.
  • the transformer can be arranged externally to the printed circuit board.
  • the transformer can be arranged on a further printed circuit board.
  • the arrangement can have a first circuit card and a second circuit card with at least one transformer, and a connection of the first circuit card can be electrically conductively connected to a connection of the second circuit card by a flat conductor.
  • the flat conductor is preferred wider than thick.
  • the height or thickness of the conductor is preferably less than the height or thickness of the printed circuit boards.
  • the conductor can be designed as a metal strip, in particular as a copper strip.
  • a metal strip for the electrical connection of connections on the top and connections on the underside of the circuit cards, two conductors running in parallel can be provided. This results in a bifilar configuration of the electrical connection of the connections of the printed circuit boards.
  • a circuit card according to the invention a transformer according to the invention or an arrangement according to the invention for carrying alternating current, in particular in the frequency range 5 kHz to 200 kHz, preferably in the range 10 kHz to 100 kHz, particularly preferably in the range 20 kHz to 70 kHz and an average alternating current greater than 10 A, preferably greater than 20 A, more preferably greater than 50 A, very particularly preferably greater than 100 A, are provided in the lines and / or the strip conductor via the connections on the circuit card.
  • the objects according to the invention can be used for charging and discharging batteries, in particular redox flow batteries, preferably chromium vanadium redox flow batteries.
  • batteries in particular redox flow batteries, preferably chromium vanadium redox flow batteries.
  • AC sources and sinks are required which, for example, can have bidirectional DC / AC conversion devices for charging and discharging external energy stores.
  • a good compromise can be achieved between particularly low-loss operation, in particular in one or more transformers, and not too expensive components, in particular in the case of the direct current / alternating current conversion device.
  • this also has the disadvantage that the high currents (> 10 A,>20A,> 100A) in this frequency range lead to disturbances and losses at many points.
  • Electromagnetic interference is an undesirable nuisance for all electrical devices that work with frequencies above 9 kHz, especially for all telecommunications radio connections. The maximum permitted interference level is therefore legally defined in most countries.
  • faults can also interfere with other electrical devices connected to the electrical arrangements. When used as a charging / discharging device for batteries, this can be particularly harmful because such systems are often used in the immediate vicinity of and in particular for such radio systems.
  • disturbances can also lead to problems when measuring controlled variables and negatively affect the control accuracy.
  • Figure 1 is a plan view of a schematically shown circuit board.
  • FIG. 2 shows a position of the printed circuit board according to FIG. 1;
  • FIG. 3 shows a highly schematic representation of a transformer
  • FIG. 5 shows a side view of a transformer arranged on a printed circuit board
  • connection ends shows a first possibility of connecting connection ends to connections of a connection arrangement of a circuit card
  • connection ends shows a second possibility of connecting connection ends to connections of a connection arrangement of a circuit card
  • Fig. 9 shows a first partial sectional view through a lyre card
  • Fig. 11 is a third partial sectional view through a circuit card.
  • FIG. 1 shows a top view of a schematically represented printed circuit board 10, which can be designed as a multilayer printed circuit board.
  • An AC component 11 is arranged on the printed circuit board 10, which in the present case as Switch bridge with four switching elements 12-15 is formed. Connection points of the switching bridge and thus of the AC component 11 are connected via a line 16 to a positive DC connection 17 and via a line 18 to a negative DC connection 19.
  • the AC component 11 is also connected to a via a first line 20 and a second line 21
  • Connection arrangement 22 electrically connected.
  • the connection arrangement 22 comprises a first connection 23 on the top side of the printed circuit board 10 and a second connection on the underside of the printed circuit card 10.
  • the second connection cannot be seen in the illustration shown.
  • the second connection is arranged congruently with the first connection 23 on the underside of the printed circuit board 10. This means that the connections are arranged parallel to one another and are spaced apart in a vertical direction (perpendicular to the plane of the drawing) of the printed circuit board 10. In the present exemplary embodiment, the distance between the connections corresponds to the thickness of the printed circuit board.
  • the conductors 20, 21 can be guided as bifilarly as possible in order to generate the smallest possible stray fields and to achieve the lowest possible inductance. In particular, inductances of less than 10 pH can be realized.
  • the first and second lines 20, 21 can be routed in parallel planes of the printed circuit board 10 at least partially, preferably largely congruently.
  • the conductors 20, 21, which can be designed as conductor tracks can have the largest possible cross section. This means that ohmic resistance can be kept low and losses can be reduced.
  • the conductors 20, 21 can be made as wide as possible, in particular as a wide conductor track. In particular, they can fill almost the entire width of the printed circuit board 10.
  • FIG. 2 shows a position of the printed circuit board 10.
  • the first line 20 is very wide.
  • the elements DC connection 17 and DC connection 19, AC component 11 and connection arrangement 22 are also shown schematically.
  • the DC connections 17, 19 can be arranged in an inner layer of the printed circuit board 10 and thus as far as possible be fully formed.
  • the second line 21 can also be provided in a further, not shown, inner layer of the printed circuit board 10 and can be configured essentially congruent with the first line 20.
  • control lines 10 can be provided in further inner layers of the circuit board, which are not shown. Vias from the position shown in FIG.
  • the first line 20 can connect the first line 20 with further inner layers and / or an outer layer, in particular the upper side, of the printed circuit board 10, e.g. B. a component side, connect.
  • the plated-through holes from another inner layer, on which the second line 21 is located, can connect the second line 21 to further inner layers or the other outer layer of the printed circuit board 10, eg. B. the bottom, connect the circuit board.
  • an electrically conductive connection to the associated connection on the underside of the circuit card can be established in this way.
  • the first line 20 can be electrically connected to the associated connection area on the upper side of the printed circuit board 10 by plated-through holes.
  • the vias can be designed so that they do not go through all layers. So-called blind holes are then used. This results in a particularly low-induction design and a bifilar design of the lines 20, 21.
  • FIG. 3 shows a highly schematic representation of a transformer which has a primary winding that cannot be seen and a secondary winding that cannot be seen. At least one of the windings is formed from a strip conductor, of which the connection ends 31, 32 or strip conductor sections are shown.
  • the connection ends 31, 32 run parallel in sections.
  • the connection ends 31, 32 are arranged spaced apart from one another in a vertical direction 33 of the strip conductor having the connection ends 31, 32.
  • the connection ends 31, 32 are not arranged next to one another or parallel to one another in a width direction 34.
  • the connection ends 31, 32 are at least partially overlapping, preferably essentially congruent, which results in a low inductance.
  • FIG. 4 shows an arrangement 40 with a printed circuit board 10 and a transformer 30 in a side view.
  • connection ends 31, 32 are arranged in parallel, at least in sections. In particular, they are spaced apart in a height direction 33 or perpendicular to a surface of one of the connection ends 31, 32.
  • the distance A between the connection ends 31, 32 is kept as equidistant and as small as possible over the entire length of the connection ends 31, 32, ie from the point at which they come out of the transformer 30 to the contact with the printed circuit board 10 , It can be between 0.3 mm and 5 mm.
  • connection end 31 makes electrical contact with the printed circuit board 10 on an upper side and the connection end 32 electrically contacts the storage card 10 on an underside. Both connections are designed in such a way that contact is made over a wide area.
  • connection arrangement 22 All electrically conductive surfaces in the area of the connection arrangement 22 are preferably arranged in parallel and overlapping in order to reduce inductances.
  • the connections of the circuit card 10 are on the top and bottom of the circuit card 10 preferably flat. In particular, they can be designed as connection surfaces.
  • the distance between the connection ends 31, 32 in the area of the circuit card 10 is only greater by the thickness of the connections 23, 24 on the circuit card 10 than the distance between the lines 20, 21 arranged here on the top and bottom of the circuit card 10.
  • the transformer 30 (as an AC component) is itself arranged on the printed circuit board 10.
  • the connection end 31 is connected to a connection on the top of the circuit card 10, while the connection end 32 is connected to a connection on the underside of the circuit card in an electrically conductive manner.
  • the connection end 32 is guided through a through opening 35 in the printed circuit board 10.
  • a further embodiment of an arrangement 60 is shown in a top view in FIG. 6.
  • a circuit card 10 with an alternating current component 11 has first and second lines 20, 21, not shown here, which lead to a Lead connection arrangement 22 with connections on the top and bottom of the circuit card 10, analogous to FIG. 1.
  • Another circuit board 10.1 has two transformers 30 which have connection ends 31, 32, of which only the connection ends 31 can be seen in the plan view.
  • the connection ends 31 are electrically conductive with connections 23 on the top of the circuit card 10.1 and the connection ends 32 are connected with connections on the underside of the circuit card 10.1.
  • the connection ends 32 are guided through the circuit board 10.1 analogously to FIG. 5.
  • the electrically conductive connection of connections of the printed circuit boards 10.1, 10 is realized by flat conductors 37, which can be designed as sheet metal strips, in particular copper sheet.
  • Connections 23 on the top of the circuit board 10.1 are electrically conductively connected both to the connection ends 31 and to the conductor 37.
  • the one or more connections of the connection arrangement 22 of the printed circuit board 10 are also electrically conductively connected to the conductor 37.
  • An analogous arrangement is located on the underside of the printed circuit boards 10.1, 10.
  • a conductor 37 is provided on the top and the bottom of the circuit cards 10, 10.1.
  • the electrical connection of the printed circuit boards 10, 10.1 is accordingly bifilar.
  • FIG. 7 shows a first possibility of connecting connection ends 31, 32 to connections 23, 24 of a connection arrangement 22 of a circuit card 10 in an electrically conductive and mechanical manner.
  • the connection ends 31, 32, the circuit board 10 and the connections 23, 24 each have a through recess 45, through which a connecting device, in particular screw 25, is inserted.
  • a nut 26 is screwed onto the screw 25.
  • Insulating washers 27, 28 are provided for the electrical insulation of the screw 25 and nut 26 from the connection ends 31, 32.
  • the connection ends 31, 32 can be clamped to the printed circuit board 10 by mutually turning screw 25 and nut 26.
  • the insulating disks 27, 28 can have centering sleeve-like projections 29 which protrude into the passage recess.
  • connections 23, 24 have recesses 41, 42 in the area of the through recess 45. There is therefore no fear that contact will be made with the screw 25.
  • connection ends 31, 32 are not present in the second possibility shown in FIG. 8, to connect connection ends 31, 32 to connections 23, 24 of a connection arrangement 22 of a circuit card 10 in an electrically conductive and mechanical manner.
  • An insulating sleeve 46 surrounding the screw 25 is therefore provided, which prevents the screw 25 from producing a short circuit between the connections 23, 24 and / or the connection ends 31, 32.
  • the insulating sleeve 46 can be formed in one piece with the insulating disk 28.
  • the multilayer printed circuit board 10 has four metallization layers 1-4. Insulating layers 5, 6, 7, which are formed from printed circuit board material, are arranged between the metallization layers 1-4. Terminal ends 31, 32 are arranged in vias 8 and soldered there by means of solder 9. The connection ends 31, 32 of the strip conductors are not flat here, but only connected over their full width to the connections 23, 24. A low-inductance connection can also be implemented in this way. In this way, electrically conductive connections to a connection 23 on the upper side of the printed circuit board 10 and to a connection 24 on the underside of the printed circuit board 10 can be established.
  • the metallization layers 1 - 4 can be contacted.
  • the metallization layers 2, 3 are inner layers in which the conductors 20, 21 can be arranged.
  • the ratio of the distance A of the connection ends 31, 32 from one another to the distance C of the lines 20, 21 from one another is less than ten here.
  • the arrangement in FIG. 9 can be improved if the plated-through hole 8 is not led through all the layers 5-7 and metallization layers 1-4, but only through the layer 5 and the metallization layers 1 and 2.
  • the metallization layers 3 and 4 would not interrupted and the current flow could run unimpeded from the connection end 32 via the metallization layers 3 and 4. That would further reduce the losses.
  • the metallization layers 1-4 can have a height or thickness in the range of 30-75 m and the insulating layers can have a thickness or height in the range of 0.2-4 mm.
  • FIG. 9 shows how two metallization layers 1 - 4 can be connected in an electrically conductive manner with plated-through holes leading only through one of the insulating layers 5.
  • the metallization layers 1 and 2 are connected here via a blind hole 51, in which electrically conductive material 52 is arranged.
  • FIG. 10 shows a further variant of the printed circuit board 10 in a sectional illustration.
  • the connection end 31 is soldered flat to the connection 3. This has the advantage over the arrangement in FIG. 9 that a current flow from the connection end 32 on the metallization layer 3 and 4 is not disturbed by the plated-through hole 8 from FIG. 9.
  • the connection end 32 is soldered in the plated-through hole 8.
  • the elements corresponding to FIG. 9 are only provided with reference numerals.
  • the ratio of the distance of the connection ends 31, 32 from one another to the distance of the lines 20, 21 from one another is less than three here.
  • connection end 31 is held in electrically conductive contact with the connection 23 by a screw 25 with an associated nut 26 and is fixed on the printed circuit board 10.
  • the ratio of the distance between the connection ends 31, 32 from one another to the distance C of the lines 20, 21 from one another is likewise less than three here.
  • the electrical and mechanical connection variants for connecting the connection ends 31, 32 which were described in FIGS. 7-11, can also be applied to the connection and contacting of the conductors 37.
  • the variants described in FIGS. 7-11 can be combined as desired and used in all the arrangements described in FIGS. 1-6.
  • DE 20 2018 107 223 Ul with the title “power converter unit” is referred to in full and the disclosure thereof is made the content of this application.
  • DE 20 2018 107 223 Ul is incorporated by reference.
  • individual features from DE 20 can also be used 2018 107 223 Ul further develop the circuit card, the transformer or the arrangement of both, in particular the low-voltage circuit arrangement (114) of the power converter (110) described there according to the circuit card 10 described here, the further circuit card 10.1 or a combination of the Circuit board 10 and the further circuit board 10.1
  • the AC component 11 can at least partially correspond to the low-voltage converter unit described there, in particular a bridge circuit (140).
  • the transformer (126) described there according to the transformer described here 30 trained, and in particular connected.
  • it can have the strip winding with strip conductor described here and in particular also the strip conductor sections described here.
  • the wireless design allows faults to be suppressed even more effectively and the circuit board, the transformer and the arrangement can be operated particularly reliably and with little loss.
  • DE 20 2018 107 224 U1 with the title “Power converter for bidirectional conversion of electrical power” is referred to in its entirety and the disclosure thereof is made the content of this application.
  • individual features from DE 20 2018 107 224 U1 can further develop the printed circuit board, the transformer or the arrangement of both.
  • the printed circuit boards 10, 10.1 described here or a combination thereof can have a power converter (201) described there.
  • the alternating current component 11 can have a bridge circuit (210) described there.
  • the alternating current component 11 can have a resonance circuit (232) described there.
  • the transformer (234) described there can be designed in accordance with the transformer 30 described here and, in particular, connected like this. In particular, it can have the ribbon winding with ribbon conductor described here and in particular also the ribbon conductor sections described here.
  • the circuit card arrangement (310) described there can be designed in accordance with the circuit card 10 described here, the further circuit card 10.1 or a combination of the circuit card 10 and the further circuit card 10.1.
  • the alternating current component 11 can have the power semiconductor components (324) described there.
  • the use of the printed circuit board 10, 10.1 or the arrangement 40, 50, 60 comprising one or more Printed circuit card (s) 10, 10.1 and transformer 30 for carrying alternating current, and in particular for charging and discharging batteries, are carried out with the printed circuit card (310) described there. Thanks to the improved design, faults can be suppressed even more effectively and the circuit board, the transformer and the arrangement can be operated particularly reliably and with little loss.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)

Abstract

Dans une carte de circuit imprimé comportant un composant à courant alternatif qui est relié à un agencement de bornes par le biais d'une première ligne et d'une deuxième ligne, les première et deuxième lignes s'étendant au moins partiellement en parallèle et étant espacées dans la direction de la hauteur de la carte de circuit imprimé, et l'ensemble de bornes comportant une première borne reliée électriquement à la première ligne et une deuxième borne reliée électriquement à la deuxième ligne, lesquelles bornes sont espacées dans la direction de la hauteur de la carte de circuit imprimé, l'une des bornes est disposée sur une face supérieure et l'une des bornes sur une face inférieure de la carte de circuit imprimé. Les bornes sont conçues pour être en contact avec deux portions de conducteur plat guidées parallèlement et les bornes sont conçues de telle sorte que les portions de conducteur plat puissent être raccordées aux bornes de sorte que le rapport de l'espacement des portions de conducteur plat au niveau des bornes à l'espacement des lignes soit inférieur à dix.
PCT/EP2019/064895 2018-06-12 2019-06-06 Carte de circuit imprimé, transformateur et agencement comprenant une carte de circuit imprimé ou un transformateur Ceased WO2019238544A2 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE102018209371.7 2018-06-12
DE102018209371.7A DE102018209371B4 (de) 2018-06-12 2018-06-12 Anordnung mit einer Leiterkarte und einem Transformator sowie Verwendung einer solchen Anordnung
DE202018107226.9 2018-12-18
DE202018107223.4 2018-12-18
DE202018107224.2U DE202018107224U1 (de) 2018-12-18 2018-12-18 Leistungswandler zum bidirektionalen Wandeln von elektrischer Leistung
DE202018107223.4U DE202018107223U1 (de) 2018-12-18 2018-12-18 Leistungswandlereinheit
DE202018107224.2 2018-12-18
DE202018107226.9U DE202018107226U1 (de) 2018-12-18 2018-12-18 Leiterkarte mit mehreren Datenleitungen

Publications (2)

Publication Number Publication Date
WO2019238544A2 true WO2019238544A2 (fr) 2019-12-19
WO2019238544A3 WO2019238544A3 (fr) 2020-04-23

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PCT/EP2019/064895 Ceased WO2019238544A2 (fr) 2018-06-12 2019-06-06 Carte de circuit imprimé, transformateur et agencement comprenant une carte de circuit imprimé ou un transformateur

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WO (1) WO2019238544A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018107224U1 (de) 2018-12-18 2019-01-17 TRUMPF Hüttinger GmbH + Co. KG Leistungswandler zum bidirektionalen Wandeln von elektrischer Leistung
DE202018107226U1 (de) 2018-12-18 2019-02-25 TRUMPF Hüttinger GmbH + Co. KG Leiterkarte mit mehreren Datenleitungen
DE202018107223U1 (de) 2018-12-18 2019-03-01 TRUMPF Hüttinger GmbH + Co. KG Leistungswandlereinheit

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US3826967A (en) * 1973-05-29 1974-07-30 Pioneer Magnetics Inc Low leakage secondary circuit for a power transformer including conductive strips forming the secondary and connections for rectifying diodes
JPH08264342A (ja) * 1995-03-17 1996-10-11 Omron Corp コイル装置
JP2003174249A (ja) * 2001-12-06 2003-06-20 Rohm Co Ltd 回路基板、およびこの回路基板の製造方法
US7492246B2 (en) * 2007-05-01 2009-02-17 Zippy Technology Corp. Winding structure of transformer
KR102382320B1 (ko) * 2015-12-11 2022-04-04 엘지이노텍 주식회사 압력 감지 센서 장치
US20170287627A1 (en) * 2016-03-29 2017-10-05 Eaton Corporation Current transformer apparatus that is mountable to a circuit board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018107224U1 (de) 2018-12-18 2019-01-17 TRUMPF Hüttinger GmbH + Co. KG Leistungswandler zum bidirektionalen Wandeln von elektrischer Leistung
DE202018107226U1 (de) 2018-12-18 2019-02-25 TRUMPF Hüttinger GmbH + Co. KG Leiterkarte mit mehreren Datenleitungen
DE202018107223U1 (de) 2018-12-18 2019-03-01 TRUMPF Hüttinger GmbH + Co. KG Leistungswandlereinheit

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