WO2022101310A1 - Unité électronique pour entraînement électrique de fluide frigorigène - Google Patents

Unité électronique pour entraînement électrique de fluide frigorigène Download PDF

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Publication number
WO2022101310A1
WO2022101310A1 PCT/EP2021/081316 EP2021081316W WO2022101310A1 WO 2022101310 A1 WO2022101310 A1 WO 2022101310A1 EP 2021081316 W EP2021081316 W EP 2021081316W WO 2022101310 A1 WO2022101310 A1 WO 2022101310A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
contact element
electronics unit
circuit board
printed circuit
Prior art date
Application number
PCT/EP2021/081316
Other languages
German (de)
English (en)
Inventor
Christopher LIEPOLD
Holger Schmitt
Original Assignee
Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
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 Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg filed Critical Brose Fahrzeugteile SE & Co. Kommanditgesellschaft, Würzburg
Publication of WO2022101310A1 publication Critical patent/WO2022101310A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the invention relates to an electronics unit for an electrical cold emitter drive, having an electronics housing with a circuit board accommodated therein with at least one contact element for contacting a connection end.
  • the invention also relates to an electric cold medium drive with such an electronic unit and a contact element.
  • Air conditioning systems are regularly installed in motor vehicles, which air-condition the vehicle interior with the aid of a system forming a refrigerant circuit.
  • Such systems basically have a circuit in which a refrigerant is guided.
  • the refrigerant for example R-134a (1,1,1,2-tetrafluoroethane) or R-744 (carbon dioxide), is heated in an evaporator and compressed by means of a (refrigerant) compressor or compressor, with the refrigerant then being transported via a heat exchanger gives off the absorbed heat again before it is fed back to the evaporator via a throttle.
  • scroll machines are fundamentally possible as compressors or condensers for the refrigerant.
  • Such scroll compressors typically have two scroll parts which can be moved relative to one another and which, during operation, work in the manner of a displacement pump.
  • the two scroll parts are typically designed as a nested (helical) pair of spirals or scrolls. In other words, one of the spirals is at least partially engaged with the other spiral.
  • the first (scroll) spiral is fixed in relation to a compressor housing (stationary scroll, stator scroll, engl.: fixed scroll), the second (scroll) volute (movable scroll, rotor scroll, engl.: movable/orbiting scroll) is driven to orbit within the first spiral by means of an electric motor.
  • a particular brushless electric motor as an electrical (three-phase) machine usually has a multi-phase field or stator winding ver- i provided stator, which is arranged coaxially to a rotor with one or more permanent magnets. Both the rotor and the stator are constructed, for example, as laminated cores, with stator teeth carrying the coils of the stator winding in stator slots located between them.
  • the alternating current provided for feeding the stator winding is usually generated by a converter (inverter).
  • this converter together with associated control electronics, is often accommodated in an electronics housing which, for example, is integrated into a motor housing as an electronics compartment.
  • electronic components are connected or contacted to components located outside of the electronics unit, as a rule, via electrically conductive connection or contact elements.
  • the coil ends of a common mode choke or a stator coil are contacted with the electronics of the electronics unit.
  • Oscillations and vibrations of around 2 kHz (kilohertz) with 6 kHz harmonics usually occur during operation of the refrigerant drive, which propagate as structure-borne noise to the electronics unit and in particular to the contact elements.
  • the contact elements - and thus the electrically conductive connection with the coil ends produced with them - are therefore subject to high-frequency loads during operation.
  • the invention is based on the object of specifying a particularly suitable electronics unit for a refrigerant drive.
  • a special durable electrical contact between electronics of the electronics unit and an external electrical component can be realized.
  • the invention is also based on the object of specifying a particularly suitable electric cold medium drive and a particularly suitable contact element.
  • the invention is achieved with the features of claim 1 and with regard to the cold medium drive with the features of claim 11 and with regard to the contact element with the features of claim 13.
  • Advantageous refinements and developments are the subject of the dependent claims.
  • the electronics unit according to the invention is intended for an electric refrigerant drive and is suitable and set up for this.
  • the electronics unit has an electronics housing with a printed circuit board accommodated therein.
  • Control and/or inverter electronics for an electric motor of the refrigerant drive, for example, are arranged on the printed circuit board.
  • the electronics unit has at least one contact or contacting element (contact piece) for electrically conductive contacting of a connection end.
  • the contact element is arranged on the printed circuit board.
  • a connection end is to be understood here in particular as an end or end section of a line or a wire of an electrical component.
  • the electrical component of the connection end is in this case arranged externally to the electronics unit, ie in particular outside of the electronics housing, and is only led into the electronics unit in sections via the connection end.
  • the connection end is preferably a coil end, ie an end of a coil or winding wire of an electrical coil.
  • the coil end is assigned, for example, to a choke coil, in particular a common-mode choke, a connecting plug connector or plug adapter, which is arranged as an interface between the electronics unit and a vehicle electrical system.
  • the coil end is preferably assigned to a stator coil, ie a motor or phase winding, of a brushless electric motor of the cold medium drive.
  • the contact element is preferably provided as a common part for the coil ends of the choke coils and for the through-connection of the ends of the stator coils.
  • the contact element has a mounting plate arranged on the printed circuit board and two contact lugs.
  • the contact tabs are oriented parallel to one another, for example.
  • the mounting plate thus forms a foot area of the contact element, on which the preferably parallel contact lugs are formed.
  • the connection end to be contacted is arranged at least in sections between the contact lugs. In other words, the connection end is bordered by the contact lugs at least in sections; the contact lugs preferably bear against the connection end at least in regions.
  • the contact element has a mechanically robust design.
  • the natural frequency of the contact element is at least 6 kHz. This means that the contact element has a natural frequency greater than or equal to 6 kHz.
  • the contact element is designed to be essentially vibration-resistant with regard to oscillations and vibrations of the refrigerant drive that occur during operation. Reliable electrical contacting is thus ensured even in the case of high-frequency loads on the contact element. As a result, a particularly reliable and long-lasting electrical contact is realized over the life of the electronics unit or the refrigeration drive. A particularly suitable electronic unit is formed as a result.
  • the contact element is approximately U-shaped with the mounting plate arranged on the printed circuit board as a horizontal U-leg and two contact lugs arranged on both sides of this as vertical U-legs.
  • the contact element has an S-shape in cross section, for example, with the mounting plate covering the lower horizontal S-leg and the contact lugs covering the upper horizontal one Form S-legs, and with an S-fold or S-bend between the S-legs is provided.
  • the S-slip or S-bend acts, for example, to relieve strain on the contacted connection end.
  • the contact element is designed as a soldering-welding contact.
  • a cohesive soldering-welding connection is realized between the contact lugs and the connection end enclosed between them for electrical contacting.
  • a reliable and stable electrical contact is thereby realized.
  • the connection end is thus connected to the contact element at at least two points, on the one hand contact lug and on the other contact lug, as a result of which the robustness and natural frequency of the electrical contacting is improved.
  • a “material connection” or a “material connection” between at least two parts connected to one another is understood here and in the following in particular to mean that the parts connected to one another at their contact surfaces through material union or crosslinking (e.g. due to atomic or molecular bonding forces) may be under the effect an additive are held together.
  • the mounting plate which is rectangular in shape for example, has a central feed-through opening.
  • the connection end is, for example, a coil end of a stator coil or phase winding, which protrudes approximately perpendicularly from a stator end face.
  • the coil end is guided in particular through a hole in the printed circuit board that opens out with the feed-through opening, so that the coil end is oriented vertically or perpendicularly to the printed circuit board or mounting plate, ie essentially parallel to the contact lugs.
  • the lead-through opening and the printed circuit board hole are in this case designed, for example, as elongated holes opening out axially, so that a tolerance or play compensation of the coil end transversely to the vertical direction is made possible.
  • the contact element has at least one clamping claw on a longitudinal side of the mounting plate for positive and/or non-positive attachment to the printed circuit board. As a result, a particularly stable and robust assembly or attachment of the contact element is realized.
  • a "positive fit” or a "positive connection” between at least two parts connected to one another is understood here and in the following in particular to mean that the parts connected to one another are held together at least in one direction by a direct interlocking of contours of the parts themselves or by an indirect interlocking via an additional connector.
  • the "blocking" of a mutual movement in this direction is therefore due to the shape.
  • a “positive connection” or a “positive connection” between at least two parts connected to one another is understood here and in the following in particular to mean that the parts connected to one another are prevented from sliding off one another due to a frictional force acting between them. If there is no "connection force” that causes this frictional force (this means the force that presses the parts against each other, for example a screw force or the force of weight itself), the non-positive connection cannot be maintained and can therefore be released.
  • the at least one clamping claw is bent out of the plane of the mounting plate.
  • the clamping claw is bent away from the contact lugs, ie in the opposite direction to the contact lugs.
  • the at least one clamping claw engages in a fastening opening in the printed circuit board.
  • the contact element suitably has two clamping claws which are arranged on opposite sides of the mounting plate and which each engage in a fastening opening.
  • the at least one clamping claw is released from a contact lug.
  • the contact lug has a recess or punched opening in the area of the mounting plate on the fixed end, through which the clamping claw is exposed.
  • the contact tabs are each provided with an embossing.
  • the embossings are provided for a contacting orientation of a welding tool, in particular a welding tongs, for contacting the contact lugs with the respective coil/connection end, and are suitable and set up for this.
  • the embossings are introduced into the contact lugs from the outside, so that the bulging or cambering caused thereby is directed inwards, ie in the direction of the connection end or towards the respective other contact lug.
  • the embossing is oriented perpendicularly or transversely to the alignment of the connection end to be contacted.
  • the course or the direction of the embossing is arranged perpendicularly or transversely to the connection end.
  • the embossing is transverse if the connection end is oriented longitudinally to the contact lugs, i.e. if the connection end is oriented parallel to the contact lugs, and if the connection end is oriented transversely to the contact lugs, i.e. if the connection end is oriented transversely or perpendicularly to the contact lugs , is introduced lengthwise into the contact lugs.
  • the longitudinal alignment is thus oriented approximately perpendicularly to the printed circuit board or mounting plate, with the transverse alignment being arranged approximately parallel to the printed circuit board or mounting plate.
  • the contact element is preferably designed as an identical part for the coil ends of the choke coils and for the through-contacting of the ends of the stator coils.
  • the contact element differs here only in the embossing applied to the contact lugs, which is oriented transversely when the coil ends are longitudinally aligned and longitudinally when the coil ends are transversely aligned. This enables particularly simple and reliable contacting.
  • the at least one contact element is designed as a one-piece, ie one-piece or monolithic, stamped and bent part.
  • the electronics unit described above is part of an electric refrigerant drive according to the invention.
  • the advantages and configurations listed with regard to the electronics unit can also be transferred to the refrigerant drive and vice versa.
  • the refrigerant drive has, for example, a fixed scroll and a movable scroll, which means in the driven state—that is, during operation (compressor operation)—orbiting (oscillating) scroll.
  • the movable scroll is also referred to below as an orbiting scroll.
  • the refrigerant drive has, for example, an electric or electromotive drive, which drives the movable scroll via a motor shaft (drive shaft).
  • the electronics unit provides reliable and long-lasting contact between the electrical components of the refrigerant drive and the electronics unit. This results in a particularly suitable refrigerant drive.
  • connection end that is contacted by means of the at least one contact element is a coil end of a stator coil of an electric motor, or a coil end of a choke coil (common-mode choke) of a plug adapter.
  • a choke coil common-mode choke
  • the contact element which is in particular one-piece and designed as a soldering-welding contact, is, for example, approximately S-shaped or U-shaped with a mounting plate and with two parallel contact lugs arranged thereon.
  • the contact element has, for example, a curvature or embossing of the contact lugs and a through-opening in the area of the mounting plate.
  • the contact element which is preferably provided as an identical part for the coil ends of the choke coils and for the through-contacting of the ends of the stator coils, differs depending on the application only in an embossing applied to the contact tabs, which is oriented transversely when the coil ends are longitudinally aligned and longitudinally when the coil ends are transversely aligned.
  • the embossing is used for contact orientation of the welding tongs for contacting the lugs with the respective coil/connection end.
  • the mechanically robust contact element has a natural frequency greater than 6 kHz and is therefore vibration-resistant or vibration-resistant with regard to oscillations or vibrations that occur during operation of the refrigerant drive.
  • FIG. 2 shows an electronic unit of the refrigerant drive in a first embodiment with a dismantled plug adapter
  • 5 shows a contact element of the electronic unit
  • 6 a detail of the printed circuit board with a view of the underside of the board opposite the contact element
  • FIG. 10 a detail of an electronic unit of the cold medium drive in a third embodiment
  • FIG. 11 shows a fourth embodiment of the contact element.
  • the refrigerant drive 2 has an electric (electric motor) drive 4 and a compressor head 6 coupled to it.
  • a bearing plate (center plate) 8 is provided as a mechanical interface between the drive 4 and the compressor head 6 , by means of which the compressor head 6 is connected to the drive 4 in terms of drive technology.
  • the bearing plate 8 forms an intermediate wall between a drive housing 10 and a compressor head housing 12.
  • the compressor head 6 is connected (joined, screwed) to the drive 4 by means of flange connections 14 distributed on the circumference and extending in an axial direction A of the refrigerant drive 2, which are only shown in the figures are provided with reference symbols by way of example.
  • a housing section of the drive housing 10 on the compressor head side is designed as a motor housing for accommodating an electric motor, not shown in detail, and on the one hand through an integrated housing partition wall (not shown) to an electronics housing 16 provided with a housing cover with motor electronics (electronics) 18 controlling the electric motor and on the other hand through the mechanical Interface 8 closed.
  • the electronics housing 16 is thus designed as an electronics compartment of the drive 4 .
  • the electronics housing 16 and the electronics 18 are part of an electronics unit 20 of the refrigerant drive 2.
  • the electronics unit 20 has a plug adapter 22 for electrically contacting the electronics 16 to an on-board network of the motor vehicle.
  • the refrigerant drive 2 has a (refrigerant) inlet or (refrigerant) inlet 24 and a (refrigerant) outlet 26 for connection to the refrigerant circuit.
  • the inlet 24 is formed in an area of the motor housing that faces the electronics housing 16 .
  • the outlet 22 is formed on a bottom of a compressor head housing 12 . When connected, the inlet 24 forms the low-pressure or suction side (suction gas side) and the outlet 26 forms the high-pressure or pump side (pump side) of the refrigerant drive 2.
  • the electric motor which is in particular brushless, has a rotor which is coupled in a torque-proof manner to a motor shaft and which is arranged such that it can rotate within a stator 27 (FIG. 4).
  • the motor shaft is rotatably or rotatably mounted in the drive housing 10 by means of two bearings.
  • the compressor head 6 has, for example, a movable scroll (scroll part) arranged in the compressor housing 12 . This is coupled to the motor shaft of the electric motor by means of an anti-rotation mechanism. The movable scroll is driven in an orbiting manner when the scroll compressor is in operation.
  • the compressor head 6 also has a rigid scroll (scroll part), that is to say fixed in the compressor housing 12 in a fixed manner.
  • the two scrolls (scroll parts) interlock with their spiral or spiral spiral walls (scroll walls, scroll spirals), which protrude axially from a respective base plate.
  • the motor shaft is driven in rotation, with the rotational movement of the motor shaft being converted into an orbiting movement of the scroll by means of the anti-rotation mechanism.
  • the refrigerant drive 2 here has a 48 V (volts) operating voltage.
  • the operating voltage is supplied via the plug adapter 22, which is attached to the electronics housing 16 by means of four screws 28.
  • the electronics 18 have a printed circuit board 30 on which a number of electrical components, not designated in any more detail, are arranged.
  • four contact elements 32 are provided which, in pairs, each make electrically conductive contact with a connection end 34 of an external component 36 , ie a component outside the electronics housing 16 .
  • the component 36 is in particular a common-mode choke of the plug adapter 22, which has a circular choke core 38 and two choke coils 40 wound around it, whose coil ends on the electronics side form the connection ends 34.
  • the connection or coil ends 38 are routed through one or more feed-through openings in the wall of the electronics housing 16 for assembly.
  • a sealing ring 42 of the plug adapter 22 is provided to seal the feed-through openings.
  • connection ends 38 are routed through a connection terminal 44 and connected to the contact elements 32 .
  • the connection clamp 44 is used for fixing and strain relief of the connection ends 38.
  • the connection clamp 44 made of plastic is essentially designed as a ring with two eyes as a through opening for the connection ends 34, with a screw hole for an axial clamping screw 46 being provided between the openings. When the connection ends 34 are inserted, the hole cross-section of the eyes or through-openings of the ring is reduced by means of the clamping screw 46 and the connection ends 34 are thus clamped in the electronics housing 16 .
  • connection terminal 44 is designed in two parts, for example, with a lower area being connected to the printed circuit board 18 and an upper area serving to accommodate the connection ends 34 . With the clamping screw 46, the upper area is connected to the lower area. In the embodiment of FIG. 3 no connection terminal 44 is provided. This means that the connection ends 34 are fixed and relieved of strain only by means of the contact elements 32 .
  • the electric motor or the stator 27 of the refrigerant drive 2 is designed in particular with six phases in the embodiment in FIGS. 2 and 3 and thus has six (motor) phases or phase connections.
  • the phase windings are applied to the stator as (stator) coils, with the phase or coil ends being routed axially or perpendicularly as connection ends 48 through the integrated housing partition into the electronics housing 16 and through the printed circuit board 39 .
  • Fig. 4 shows a section of a second embodiment of the refrigerant drive 2 and the electronics unit 20, without the compressor head 6 and without the drive housing 10 and electronics housing 16.
  • the refrigerant drive 2 has an operating voltage of 470 V in this version, with the stator 27 or the Electric motor is designed in three phases, so that only three connection ends 48 are passed through slot-like printed circuit board holes 50.
  • the circuit board hole 50 shown for example in FIG. 6 is flanked on both sides by two fastening openings 52 . In the illustration in FIG. 4 , two of the three connection ends 48 are contacted with a contact element 32 .
  • the contact element 32 is explained in more detail below with reference to FIGS. 5 and 7a to 9b.
  • the contact element 32 designed in particular as a soldering-welding contact, is approximately U-shaped with a mounting plate 54 arranged on the printed circuit board 30 as a horizontal U-leg and two contact lugs 56 arranged on both sides thereof as vertical U-legs.
  • the connection or coil end 34, 48 to be contacted is enclosed between the contact lugs 56 in the contacted state.
  • the contact tabs 56 are integral, so one piece or monolithic, formed on the longitudinal sides of the approximately rectangular mounting plate 54, and from the Level of the mounting plate 54 bent out. Starting from the mounting plate 54, the contact lugs 56 are initially bent in an arc towards one another and then approximately perpendicular to the mounting plate 54, so that the free ends of the contact lugs 56 are directed parallel to one another along an axial longitudinal direction.
  • the mounting plate 54 has a central feed-through opening 58 designed as an elongated hole, with the transition from the arc to the parallel course of the contact lugs 56 taking place approximately above the feed-through opening 58 .
  • the feed-through opening 58 is arranged axially aligned with the respective printed circuit board hole 50 when used for contacting the connection ends 48 .
  • Two clamping claws 60 formed on the longitudinal sides of the mounting plate 54 are provided for fixing and fastening the contact element 32 .
  • a punched opening 62 is introduced in the arched area of the contact tabs 56, by means of which the clamping claws 60 are released.
  • the clamping claws 60 are bent approximately perpendicularly out of the plane of the mounting plate 54 (FIG. 7b). In this case, the clamping claws 60 are bent in the opposite direction to the contact lugs 56 .
  • the clamping claws 60 engage in a respective fastening opening 52 in a positive and/or non-positive manner.
  • the contact element 32 is preferably provided as an identical part for contacting the connection ends 34, 48. Depending on the application, the contact element 32 differs only in an embossing 64 applied to the contact lugs 56.
  • the embossings 64 are used for the contact orientation of a welding tool, in particular a welding gun, for contacting the contact lugs 56 with the respective coil Z connection end 34, 48.
  • the orientation or orientation of the embossing 64 is dependent on the orientation of the connection ends 34, 48 to be contacted.
  • the embossing 64 is preferably oriented perpendicularly or transversely to the orientation of the connection ends 34, 48.
  • the embossing is like a groove or bead Bulge introduced from the outside into the contact tabs 56, so that the resulting arc of curvature is directed into the interior of the LI shape, ie to the opposite contact tab 56 in each case.
  • Figures 5 and 7a and 7b show an embossing 64 for a longitudinal alignment of the connection end 48 to be contacted.
  • connection ends 34 are oriented transversely to the contact lugs 56 .
  • the embossings 64 are introduced longitudinally into the contact lugs 56 on the free end side, and run up to the beginning of the arc of the bend opening into the mounting plate 54 .
  • FIGS. 9a and 9b has no embossing 64.
  • the or each contact element 32 is designed as a one-piece, ie one-piece or monolithic, stamped and bent part.
  • the contact element 32 is made from an electrically conductive material, in particular from a metal.
  • the contact element 32 Due to the LI shape, the contact element 32 has a natural frequency greater than 6 kHz in the contacted state with the connection ends 34, 48 and is therefore vibration-proof or vibration-resistant with regard to oscillations or vibrations that occur during operation of the refrigerant drive 2.
  • 10 shows a section of a third embodiment of the refrigerant drive 2 or the electronics unit 20.
  • the refrigerant drive 2 has an operating voltage of 470 V in this embodiment.
  • the connection ends 34 of the plug adapter 22 are guided to the contact elements 32′ via a plastic part 66 screw-fastened to the printed circuit board 30 and make contact with them.
  • 10 also shows a perpendicular to the circuit board 30 ori- enttes connection end 48, which is also contacted with a contact element 32 '.
  • a signal line 68 of the electronics 18 is routed along the wall of the electronics housing 16 and is deflected around a dome 70 for strain relief.
  • the contact element 32' shown individually in FIG. 11 has an S-shape in this embodiment.
  • the mounting plate 54 forms the (lower) S-leg resting on the printed circuit board 30, the contact lugs 56 forming an (upper) S-leg of the contact element 32' oriented parallel to the mounting plate 54.
  • a section 72 extends from the mounting plate 54 as an S-curve or an S-bend.
  • the section 72 has a section 72a which is arranged parallel to the mounting plate 54 and which, via a section 72b bent in a C or U-shape, extends into the mounting plate 54 transforms.
  • the section 72b is bent in such a way that the section 72a is arranged axially above the mounting plate 54 .
  • Section 72a has a slot 74, which is arranged axially aligned with feed-through opening 58, so that connecting end 48 can be guided axially from printed circuit board hole 50 through feed-through opening 58 and slot 74 to contact tabs 56 (see FIG. 10).
  • the slot 74 divides the section 72a into two tabs or lugs, which are bent approximately L-shaped or perpendicularly from the section 72a as sections 72c.
  • the contact lugs 56 are provided with an embossing 64 that extends along the contact lugs 56 for contacting the connection ends 48 .
  • the contact elements 32' for contacting the connection ends 34 have an embossing 64 directed transversely thereto.
  • the invention is not limited to the exemplary embodiments described above. On the contrary, other variants of the invention can also be derived from this by a person skilled in the art without departing from the subject matter of the invention. In particular, all of the individual features described in connection with the exemplary embodiments can also be combined with one another in other ways without departing from the subject matter of the invention.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne une unité électronique (20) pour un entraînement électrique de fluide frigorigène (2), présentant un boîtier électronique (16) dans lequel est logée une carte de circuit imprimé (30), au moins un élément de contact (32, 32') destiné à mettre en contact une extrémité de connexion (34, 48) étant agencé sur la carte de circuit imprimé (30), l'élément de contact (32, 32') présentant une plaque de montage (54) disposée sur la carte de circuit imprimé (30) et deux pattes de contact (56), l'extrémité de connexion (34, 48) étant disposée au moins par endroits entre les pattes de contact (56), et l'élément de contact (32, 32') présentant une fréquence propre d'au moins 6 kilohertz.
PCT/EP2021/081316 2020-11-13 2021-11-11 Unité électronique pour entraînement électrique de fluide frigorigène WO2022101310A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020214324.2A DE102020214324A1 (de) 2020-11-13 2020-11-13 Elektronikeinheit für einen elektrischen Kältemittelantrieb
DE102020214324.2 2020-11-13

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Publication Number Publication Date
WO2022101310A1 true WO2022101310A1 (fr) 2022-05-19

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PCT/EP2021/081316 WO2022101310A1 (fr) 2020-11-13 2021-11-11 Unité électronique pour entraînement électrique de fluide frigorigène

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DE (1) DE102020214324A1 (fr)
WO (1) WO2022101310A1 (fr)

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