WO2014017150A1 - Réactance, convertisseur, et dispositif de conversion d'énergie électrique - Google Patents

Réactance, convertisseur, et dispositif de conversion d'énergie électrique Download PDF

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Publication number
WO2014017150A1
WO2014017150A1 PCT/JP2013/063964 JP2013063964W WO2014017150A1 WO 2014017150 A1 WO2014017150 A1 WO 2014017150A1 JP 2013063964 W JP2013063964 W JP 2013063964W WO 2014017150 A1 WO2014017150 A1 WO 2014017150A1
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WO
WIPO (PCT)
Prior art keywords
case
lid
reactor
protrusion
coil
Prior art date
Application number
PCT/JP2013/063964
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English (en)
Japanese (ja)
Inventor
肇 川口
睦 伊藤
順二 井戸
Original Assignee
住友電気工業株式会社
住友電装株式会社
株式会社オートネットワーク技術研究所
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.)
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Application filed by 住友電気工業株式会社, 住友電装株式会社, 株式会社オートネットワーク技術研究所 filed Critical 住友電気工業株式会社
Publication of WO2014017150A1 publication Critical patent/WO2014017150A1/fr

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    • 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
    • H01F27/02—Casings
    • 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

Definitions

  • the present invention relates to a reactor in which a combination of a coil and a magnetic core is housed in a case and a cover is covered on the opening of the case, a converter using the reactor, and a power converter using the converter.
  • Patent Document 1 discloses a reactor used for a circuit component of a converter that is mounted on a vehicle such as a hybrid vehicle.
  • the reactor of Patent Document 1 includes a combination of a coil having a pair of coil elements arranged in parallel and an annular magnetic core. This combination is sealed with a sealing resin in a state of being housed inside the case, and the opening of the case is closed with a lid. By providing the lid, the assembly and sealing resin in the case can be physically and chemically protected.
  • the reactor of this patent document 1 it is from a case by the snap fit structure, ie, the structure which engages the annular fastener provided in the outer edge part of a lid
  • the lid may not be sufficiently fixed to the case.
  • the development of vehicles using electric power as a drive source such as hybrid vehicles and electric vehicles, has been remarkable, and reactors mounted on such vehicles tend to be used at high frequencies and large currents. Since the combination of reactors used at high frequencies vibrates violently, there is a risk that intense noise may be generated due to the lid attached to the case shaking due to the snap-fit structure.
  • the reason that the lid rattles is that when the engaging claw and the fastener are engaged, there is a slight clearance between them. This clearance is necessary to ensure the ease of engaging the fastener with the engaging claw. If this clearance is not provided, when engaging the fastener with the engaging claw, it is difficult to engage the two with a slight shift in the position of both, and in the worst case, the fastener may be broken. .
  • both the case and the lid are fixed with bolts in order to make the engagement between the case and the lid stronger than the snap-fit structure. If it is a bolting structure, shakiness of a lid can be prevented effectively.
  • the bolting structure causes an increase in the number of parts of the reactor and an increase in work processes, and the productivity of the reactor decreases.
  • the reactor of the present invention includes a coil, a magnetic core, a case, and a lid.
  • the coil is a member formed by winding a winding.
  • the magnetic core is a member inserted through the coil.
  • the case is a member that houses a combination of a coil and a magnetic core.
  • the lid is a member that covers at least a part of the opening of the case.
  • Each of the reactor case and the lid of the present invention including these members includes a case-side pressing engagement portion and a lid-side pressing engagement portion that press each other.
  • the case-side pressing engagement portion and the lid-side pressing engagement portion that are pressed against each other secure the lid to the case, thereby making the lid more rattling than the conventional configuration employing a snap-fit structure.
  • noise due to rattling of the lid can be effectively suppressed, and the lid can be prevented from coming off from the case.
  • the reactor of the said structure can be produced only by attaching a cover to a case. That is, the reactor of the present invention is excellent in productivity without increasing the number of parts and the work process in particular, as in the case of a reactor in which a lid is fixed to a case with a bolt.
  • one of the case side pressing engagement part and the lid side pressing engagement part may be a protrusion, and the other is a hole for receiving the protrusion.
  • the protrusion only needs to protrude in the facing direction of the case and the lid, and the hole only needs to have an axis that coincides with the axis of the protrusion.
  • the above form is a form in which the lid is fixed to the case by press-fitting the protrusion into the hole. Since the protrusion and the hole have a simple configuration, they can be easily formed, which contributes to the improvement of the reactor productivity. In addition, since the fitting between the protrusion and the hole is relatively strong, and the protrusion and the hole are relatively hard to damage, it is easy to maintain the fixing of the lid to the case over a long period of time. Furthermore, in this embodiment, the degree of fixing the lid to the case can be easily adjusted by adjusting the outer diameter of the protrusion with respect to the inner diameter of the hole.
  • the reactor of the present invention there can be mentioned a form in which the case-side press engagement portion is a hole and the lid-side press engagement portion is a protrusion.
  • the axial length of the hole is required to some extent (for example, 5 mm or more) in order to strengthen the fixation.
  • the height of the case is higher than the height of the lid (the length in the thickness direction of the lid). Therefore, the case is easier to form a hole having a certain axial length than the lid.
  • the protrusion may have a tapered shape.
  • the protrusion can be easily pressed into the hole.
  • the protrusion has a tapered shape, positioning of the lid with respect to the case becomes very easy.
  • a plurality of fins arranged in the circumferential direction of the protrusion around the axis of the protrusion are provided on the tip end side of the protrusion.
  • the portion where the fin is formed can be easily bent inward in the radial direction of the protrusion. As a result, it becomes easy to insert the protrusion into the hole.
  • the fact that the portion where the fin is formed is easily bent means that the force by which the protrusion presses the inner peripheral surface of the hole is increased by the amount of bending, so that the engagement between the protrusion and the hole becomes strong.
  • the lid includes a flange portion that covers a portion of the outer wall surface of the case that is close to the opening, and the case-side pressing engagement portion is provided at the opening edge of the case, and extends outward from the case.
  • the form which is a protrusion which protrudes can be mentioned.
  • a part of the inner peripheral surface of the collar provided on the lid may be configured to function as a lid-side pressing engagement portion.
  • the case-side pressing engagement portion and the inner peripheral surface (lid-side pressing engagement portion) of the lid flange are slidably contacted, and both pressing engagement portions Are pressed against each other, and the lid is firmly fixed to the case.
  • the both pressing engagement portions having the above-described configuration do not need to be formed with strict positional accuracy as the protrusions and the holes, and can be easily manufactured. This is because the case-side pressing engagement portion may be brought into sliding contact with any position on the inner peripheral surface (lid-side pressing engagement portion) of the collar portion of the lid.
  • a form having a snap-fit structure that fits into the case and the lid may be used.
  • the snap-fit structure may be provided outside the case, or may be provided inside the case.
  • the case may include a form including a bottom plate portion and a side wall portion that is separately manufactured from the bottom plate portion and attached to the bottom plate portion by a fixing member.
  • the lid and the side wall are preferably made of resin.
  • the productivity of the case can be improved by separately producing the bottom plate portion and the side wall portion. This is because it is difficult to produce a case in which the bottom plate and the side wall are integrated from the beginning. For example, when a case with a bottom plate is manufactured by filling the mold with the constituent material of the case, the mold for manufacturing the case is complicated, and the work of removing the case from the complicated mold is complicated. Become.
  • the side wall portion may have a function as a terminal block, or the lid portion may have a cover function for protecting the terminal member.
  • the side wall portion may have a function as a terminal block, or the lid portion may have a cover function for protecting the terminal member.
  • the side wall includes a terminal block for fixing a terminal member attached to the end of the coil, and the lid is disposed on the terminal block.
  • the terminal cover part which covers the upper surface of the terminal member to be provided can be mentioned.
  • the terminal block integrally on the side wall, it is not necessary to prepare a separate terminal block, and it is possible to provide a reactor with a small number of parts and excellent productivity. Moreover, the terminal member on a terminal block can be effectively protected by providing a terminal cover part in a lid
  • the converter of the present invention includes the reactor of the present invention.
  • the converter of the present invention using the reactor of the present invention which is difficult to rattle even when used at high frequencies, contributes to the improvement of the quietness of a device (for example, a vehicle such as a hybrid car) provided with the converter of the present invention.
  • the power converter of the present invention includes the converter of the present invention.
  • the power conversion device of the present invention using the reactor of the present invention which is difficult to rattle even when used at high frequencies, improves the quietness of equipment (for example, a vehicle such as a hybrid vehicle) provided with the power conversion device of the present invention. Contribute to.
  • the reactor of the present invention can be easily manufactured, and even when it is used at a high frequency and a large current, there is almost no noise caused by the shaking of the lid attached to the case.
  • FIG. 3 is an exploded perspective view of a case provided in the reactor according to the first embodiment. It is a disassembled perspective view of a combined body. It is explanatory drawing which shows the procedure which accommodates an assembly in a case.
  • (A) is a schematic perspective view of the case and lid
  • (B) is the elements on larger scale of the case side press engagement part with which a case is equipped.
  • 1 is a schematic configuration diagram schematically showing a power supply system of a hybrid vehicle. It is a schematic circuit diagram which shows an example of this invention power converter device provided with this invention converter.
  • a reactor 1 according to Embodiment 1 will be described with reference to FIGS.
  • a reactor 1 shown in FIG. 1 has a configuration in which a combination 10 of a coil 2 and a magnetic core (at a position not visible in FIG. 1) is housed in a case 6 and an opening of the case 6 is closed by a lid 9.
  • the feature of the reactor 1 is that a case-side pressing engagement portion 6P and a lid-side pressing engagement portion 9P that press each other are provided on the case 6 and the lid 9, respectively.
  • each structure of the reactor 1 of this Embodiment 1 is demonstrated in detail.
  • the combination 10 only needs to include a coil 2 formed by winding a winding and a magnetic core inserted into the coil 2, and the form of the coil 2 and the magnetic core is not particularly limited. A specific configuration of the combined body 10 will be described with reference to FIG. 4 in a method of manufacturing the reactor 1 described later.
  • the case 6 is a box-shaped member that can accommodate the combined body 10 therein (see also FIG. 3).
  • the case 6 includes a bottom plate portion 60 on which the assembly 10 is placed and a side wall portion 61 that is separately manufactured from the bottom plate portion 60 and attached to the bottom plate portion 60 later.
  • the side wall portion 61 has two cylindrical case-side press engagement portions (engagement cylinder portions) 6P each having a hole into which a projection-like lid-side press engagement portion (engagement projection portion) 9P described later is fitted. Is provided.
  • one engagement tube portion 6P is between the terminal blocks 6Sa and 6Sb on the core cover portion 6A, and the other engagement tube portion 6P is on the other core cover portion side (U of the coil 2).
  • the core cover 6A and the terminal blocks 6Sa and 6Sb will be described later.
  • the lid 9 is a member that covers the opening of the case 6 that houses the assembly 10 and closes the opening (see also FIG. 2).
  • the lid 9 can protect the assembly 10 in the case 6 from the external environment.
  • Two engagement protrusions 9P that protrude toward the case 6 are provided at positions corresponding to the engagement cylinder portions 6P and 6P of the case 6 on the inner surface of the lid 9. These engagement protrusions 9P and 9P have a portion whose diameter is larger than the inner diameter of the engagement tube portions 6P and 6P.
  • the degree of fixation of the lid 9 to the case 6 and the ease of attaching the lid 9 to the case 6 can be adjusted by adjusting the shapes and dimensions of the holes of the engagement protrusion 9P and the engagement cylinder 6P. .
  • the inner diameter of the hole of the engagement cylinder portion 6P is uniform in the axial direction of the hole.
  • the engaging protrusion 9P includes a base 9Ps on the base side, and a plurality of fins 9Pf arranged in the circumferential direction of the engaging protrusion 9P on the tip side of the base 9Ps. It has a shape to have.
  • the envelope circles of these fins 9Pf have the same diameter as the base 9Ps from a portion connected to the base 9Ps to a predetermined length, and gradually become smaller at the front end side of the fins 9Pf (that is, the front end side of the engaging protrusion 9P). ing. That is, a part of the front end side of the engaging protrusion 9P has a tapered shape, and when the lid 9 is attached to the case 6, it becomes easy to insert the engaging protrusion 9P into the hole of the engaging cylinder portion 6P. Yes.
  • the outer diameter of the base portion 9Ps and the envelope circle diameter on the base side of the fin 9Pf are slightly larger than the inner diameter of the engagement tube portion 6P, the insertion amount of the engagement protrusion 9P into the engagement tube portion 6P Is increased, the fin 9Pf is deflected radially inward, and the engagement protrusion 9P is press-fitted into the hole of the engagement cylinder portion 6P. As a result, the hole of the engagement tube portion 6P and the engagement projection portion 9P are pressed against each other in the radial direction of the engagement projection portion 9P, and the case 6 and the lid 9 are firmly fixed.
  • the fitting between the small-diameter portion of the engaging protrusion 9P (the tapered portion of the fin 9Pf) and the hole of the engaging tube portion 6P may be “clearance fit”.
  • the fitting of the large-diameter portion of the engaging projection 9P (the base 9Ps and the fin 9Pf that is not tapered) and the hole of the engaging tube portion 6P is preferably “tight fit”.
  • the outer diameter of the large-diameter portion of the engaging protrusion 9P is 4 mm or more. By doing so, when the lid 9 is attached to the case 6, the engagement protrusion 9 ⁇ / b> P is not easily broken.
  • the outer diameter of the tapered protruding end portion of the engaging projection 9P is not particularly limited, and may be substantially 0 mm, that is, the protruding end of the engaging protruding portion 9P may be sharp.
  • the shape of the engagement protrusion 9P and the shape of the hole of the engagement tube portion 6P are not limited to the shapes described above, as long as the shapes are such that the both 9P and 6P are pressed against each other. .
  • the following forms may be used.
  • the outer diameter of the engaging projection 9P is uniform, and the inner diameter of the hole of the engaging cylinder 6P is narrower toward the back of the hole (regardless of the presence or absence of the fin 9Pf).
  • the engagement protrusion 9P is tapered, and the inner diameter of the hole of the engagement cylinder 6P is narrower toward the back of the hole (whether or not the fin 9Pf is present).
  • a form in which the engaging protrusion 9P has a tapered shape.
  • the inner diameter of the hole of the engagement cylinder portion 6P may be uniform, or may be narrower or wider toward the back of the hole (regardless of the presence or absence of the fin 9Pf).
  • the cross-sectional shape of the base portion 9Ps of the engaging protrusion 9P and the cross-sectional shape of the hole of the engaging tube portion 6P are not limited to a circle, and may be, for example, a polygon such as a rectangle. In the case of a polygon, the above “outer diameter” and “inner diameter” are read as “outer diameter” and “inner diameter” of the circumscribed circle of the polygon.
  • the reactor 1 having the above-described configuration can firmly fix the case 6 and the lid 9 only by attaching the lid 9 to the case 6, and is excellent in productivity.
  • the case 6 and the lid 9 are firmly fixed, even if the reactor 1 is used at a high frequency, the lid 9 attached to the case 6 may rattle or come off from the case 6 due to vibration. There is little to do. Since the rattling of the lid 9 is effectively suppressed, it is possible to effectively prevent the generation of noise associated with the use of the reactor 1. Therefore, it is possible to improve the quietness of a device (for example, a hybrid vehicle) provided with the reactor 1.
  • a device for example, a hybrid vehicle
  • the reactor 1 having the above-described configuration is used in applications where the energization conditions are, for example, maximum current (direct current): about 100 A to 1000 A, average voltage: about 100 V to 1000 V, and operating frequency: about 5 kHz to 100 kHz, typically an electric vehicle It can be suitably used as a component part of a vehicle-mounted power conversion device such as a hybrid vehicle.
  • maximum current direct current
  • a vehicle-mounted power conversion device such as a hybrid vehicle.
  • an inductance satisfying 10 ⁇ H or more and 2 mH or less of the inductance when the DC current is 0 A and 10% or more of the inductance when the maximum current is applied is 10% or more can be suitably used.
  • the reactor 1 described above can be produced, for example, according to the following steps ⁇ to ⁇ . [ ⁇ ] The combined body 10 is produced. [ ⁇ ] The combination 10 is stored in a case. [ ⁇ ] Attach the lid to the case.
  • each procedure will be described in order, and each configuration provided in the reactor 1 of the present embodiment will be described in detail.
  • the coil 2 includes a pair of coil elements 2A and 2B and a coil element connecting portion 2r that connects both the coil elements 2A and 2B.
  • the coil elements 2A and 2B are formed in a hollow cylindrical shape with the same number of turns and the same winding direction, and are arranged side by side so that the axial directions are parallel to each other.
  • the coil element connecting portion 2r is a U-shaped bent portion that connects the coil elements 2A and 2B on the other end side of the coil 2 (the right side in FIG. 4).
  • the coil 2 may be formed by spirally winding a single winding without a joint. Alternatively, the coil elements 2A and 2B may be formed by separate windings, and the coil elements 2A and 2B may be formed. You may form by joining the edge parts of a coil
  • a coated wire having an insulating coating made of an insulating material on the outer periphery of a conductor such as a flat wire or a round wire made of a conductive material such as copper, aluminum, or an alloy thereof can be suitably used.
  • the conductor is made of a copper rectangular wire
  • the insulation coating is made of a coated rectangular wire made of enamel (typically polyamideimide), and each of the coil elements 2A and 2B uses the covered rectangular wire as edgewise. It is a wound edgewise coil.
  • the end face shape of each coil element 2A, 2B is made into the shape which rounded the rectangular corner
  • Both end portions 2a and 2b of the coil 2 are extended from the turn forming portion and connected to the terminal members 8a and 8b (see FIG. 1).
  • An external device such as a power source for supplying power is connected to the coil 2 via the terminal members 8a and 8b.
  • the magnetic core 3 includes a pair of inner core portions 31 and 31 (see dotted circles) disposed inside the coil elements 2A and 2B, and a pair of outer core portions 32 and 32 exposed from the coil 2.
  • the inner core parts 31 and 31 are used in the form of core parts 4A and 4B including a coating resin 40 formed integrally on the outer peripheral surface thereof. It may be considered that the coating resin 40 plays the same role as the bobbin in the conventional configuration.
  • These core parts 4A and 4B are members of the same shape. If the core part 4A is rotated 180 ° in the horizontal direction, the core part 4B is obtained. Accordingly, each part of the core component 4B is assigned the same reference numeral as that of the core component 4A, and the following description will be made with the core component 4A as an example.
  • the core component 4 ⁇ / b> A is a member in which a coating resin 40 is integrally formed on the outer peripheral surface of the columnar inner core portion 31.
  • the core part 4A is a member in which the inner core portion 31, the cylindrical bobbin, and the frame bobbin are integrally formed.
  • the inner core portion 31 alternately connects a core piece 31m made of a substantially rectangular parallelepiped magnetic material and a gap material 31g having a lower magnetic permeability than the core piece 31m.
  • This is a laminated columnar body.
  • the number of core pieces 31m and the number of gap members 31g are the same.
  • the gap member 31g is provided on one end surface (the left end surface of the paper surface) of the inner core portion 31, and the core piece 31m is provided on the other end surface (the right end surface of the paper surface). Is arranged.
  • the inner core part 31 of a dotted line circle is shown by the direction when arrange
  • the inner core portion 31 in the core component 4A is arranged such that the illustrated inner core portion 31 is rotated by 180 ° in the horizontal direction, that is, the core piece 31m is disposed at the left end portion of the paper and the gap material 31g is disposed at the right end portion of the paper. Is done.
  • the covering resin 40 integrated with the inner core portion 31 includes a frame-shaped portion 42A, a peripheral surface covering portion 41oA, and an engaging cylinder portion 43A.
  • the peripheral surface covering portion 41oA and the engaging cylinder portion 43A protrude in a state where they are juxtaposed from one surface side of the frame-shaped portion 42A.
  • the peripheral surface covering portion 41oA covers the peripheral surface of the inner core portion 31 described above over almost the entire length in the longitudinal direction, and serves as a cylindrical bobbin in the conventional configuration.
  • the tip side portion of the peripheral surface covering portion 41oA is formed thinner than the other portions, and this thin portion (engagement portion 417) is used as the engagement cylinder portion 43A of the core component 4B facing the core component 4A. Can be inserted into. Therefore, when the core parts 4A and 4B are brought close to each other, the engaging cylinder part 43A and the engaging part 417 of both the core parts 4A and 4B are fitted together, and both the core parts 4A and 4B are connected in a ring shape.
  • An end portion covering portion 41eA that covers the end surface 31e of the inner core portion 31 is formed in the portion of the frame-shaped portion 42A to which the peripheral surface covering portion 41oA is connected, and the end surface 31e of the inner core portion 31 of the core component 4A is formed.
  • the outer core portion 32 is not directly contacted.
  • the end covering portion 41eA serves as a gap disposed between the inner core portion 31 and the outer core portion 32.
  • a through-hole 430 having a size capable of inserting the inner core portion 31 is formed in a portion of the frame-like portion 42A to which the engaging cylinder portion 43A is connected.
  • the through hole 430 is a rectangular hole corresponding to the engaging portion 417.
  • the gap material 31g is disposed on the end surface of the inner core portion 31 of the core component 4B inserted into the engaging cylinder portion 43A of the core component 4A, the inner core portion 31 of the core component 4B is configured to be the gap material 31g. It connects to the outer core part 32 via.
  • a partition portion 46A is provided between the peripheral surface covering portion 41oA and the engaging tube portion 43A in the frame-like portion 42A.
  • the partition 46A is disposed between the two coil elements 2A and 2B of the coil 2 fitted into the core parts 4A and 4B, and maintains the separated state of the two coil elements 2A and 2B. Thereby, the insulation between both coil elements 2A and 2B can be ensured.
  • Examples of the constituent material of the coating resin 40 described above include heat such as polyphenylene sulfide (PPS) resin, polytetrafluoroethylene (PTFE) resin, liquid crystal polymer (LCP), nylon 6, nylon 66, and polybutylene terephthalate (PBT) resin.
  • PPS polyphenylene sulfide
  • PTFE polytetrafluoroethylene
  • LCP liquid crystal polymer
  • nylon 6, nylon 66 nylon 6, nylon 66
  • PBT polybutylene terephthalate
  • a plastic resin can be used.
  • the outer core portions 32 and 32 are columnar core pieces whose upper surfaces are substantially dome-shaped, for example.
  • One outer core portion 32 disposed on the left side of the paper faces the one end side (left side of the paper surface) of the inner core portions 31, 31 and the other outer core portion 32 disposed on the right side of the paper surface is the inner core. It faces the other end side (right side of the drawing) of the portions 31 and 31.
  • the annular magnetic core 3 is formed by the inner core portions 31 and 31 and the outer core portions 32 and 32.
  • Each core piece constituting the inner core portion 31 and the outer core portion 32 includes a compacted body using a soft magnetic powder represented by an iron group metal such as iron or an alloy thereof, or a soft magnetic powder.
  • a molded cured body made of a resin, a laminated body in which a plurality of magnetic thin plates (for example, electromagnetic steel sheets) having an insulating coating are laminated, and the like can be used.
  • the core pieces 31m constituting the inner core portions 31, 31 and the outer core portions 32, 32 may have different magnetic characteristics.
  • the magnetic properties of the core piece 31m and the outer core portion 32 may be made different from each other by using different materials.
  • the core piece 31m may be a molded and hardened body, and the outer core portion 32 may be a green compact. By doing so, the magnetic characteristics of the two may be made different.
  • the amount of magnetic powder contained in the molded and hardened body tends to be smaller than that of the green compact, so that “the relative permeability of the molded hardened body ⁇ the relative permeability of the green compact”.
  • the magnetic core 3 (reactor 1) that is difficult to be magnetically saturated even when used with a large current can be obtained. It can.
  • a coil 2 formed by winding a winding is prepared, and a combined body 10 is completed by assembling a magnetic core 3 composed of a plurality of divided pieces to the coil 2.
  • the core parts 4 ⁇ / b> A and 4 ⁇ / b> B are assembled to the coil 2, and the assembly is sandwiched between the outer core parts 32 and 32.
  • the coil 10 may be formed by winding a winding around the assembled magnetic core 3 to complete the combined body 10.
  • the plurality of divided pieces are preferably joined with, for example, a thermosetting adhesive. This is because the adhesive can be expected to function as a cushioning material that suppresses the collision between the split pieces, and noise during use of the reactor 1 can be suppressed.
  • the combination may be produced without forming the inner core portions 31 and 31 in the form of the core parts 4A and 4B.
  • inner core parts 31 and 31, outer core parts 32 and 32, a pair of cylindrical bobbins, and a pair of frame bobbins are prepared.
  • you may complete the magnetic core 3 by pinching the inner core parts 31 and 31 which fitted the cylindrical bobbin in the outer periphery with the outer core parts 32 and 32.
  • FIG. Also in that case, if the inner core part 31 and the outer core part 32 are joined via an adhesive, the collision between the core parts 31 and 32 when the reactor 1 is used can be suppressed, and as a result, when the reactor 1 is used. Noise can be suppressed.
  • the cylindrical bobbin may be configured to combine divided pieces.
  • the combined body 10 is stored in the case 6.
  • a case 6 In housing the combination 10 produced in the above [ ⁇ ] in the case 6, in this embodiment, as shown in FIG. 5, a case 6, an insulating sheet 7A, and an adhesive sheet 7B were prepared. First, the prepared member will be described.
  • the case 6 prepared in the present embodiment is formed by combining a flat plate-like bottom plate portion 60 and a side wall portion 61 produced separately from the bottom plate portion 60. Both the materials 60 and 61 can be made of different materials or the same.
  • the bottom plate portion 60 is a plate-like member that functions as a heat dissipation path from the combination 10 to an attachment target (for example, a cooling base) of the reactor 1 while supporting the combination 10 (see FIG. 5).
  • an attachment target for example, a cooling base
  • one surface side (upper side of the paper surface) of the bottom plate portion 60 is a mounting surface on which the assembly 10 is mounted, and the other surface side (lower side of the paper surface) of the bottom plate portion 60 cools the reactor 1 (see FIG. (Not shown).
  • First mounting holes H1 for attaching the reactor 1 to the cooling base are provided at the four corners of the bottom plate portion 60, respectively. Moreover, the 2nd attachment hole H2 is provided in two corners in a diagonal position among the said four corners.
  • the bottom plate portion 60 having the above-described configuration is disposed close to the coil 2, it is preferable to configure the bottom plate portion 60 from a nonmagnetic material. Moreover, since the baseplate part 60 is utilized for the thermal radiation path
  • the side wall 61 is a cylindrical member having openings on the upper side and the lower side, and in addition to the engagement cylinder 6P described above, the engagement claw 6C and the engagement claw are positioned at a position near the upper opening on the inner wall surface. And guide protrusions 6G disposed on both sides of the joint claw 6C.
  • the engaging claw 6C is a protrusion having a triangular cross section in which the protruding amount from the inner peripheral surface of the case 6 gradually increases as it goes from the upper side to the lower side of the case 6, and an annular fastener 9C provided on the lid 9 described later is provided. It is the part that is caught.
  • This engaging claw 6C is a member constituting a part of a so-called snap-fit structure.
  • the guide protrusions 6G and 6G are a pair of protrusions that extend in the height direction of the case 6 and sandwich the fastener 9C from both sides when an annular fastener 9C described later is engaged with the engaging claw 6C. Thus, the fastener 9C is guided to the engaging claw 6C.
  • the conventional snap-fit structure is provided outside the case 6, but in the present embodiment, it is provided inside the case 6.
  • a flange portion 61F is provided on the lower edge portion of the side wall portion 61.
  • the contour shape of the flange portion 61F substantially matches the contour shape of the bottom plate portion 60 described above, and the flange portion 61F has a third attachment at a position corresponding to the first attachment hole H1 and the second attachment hole H2 of the bottom plate portion.
  • a hole H3 and a fourth mounting hole H4 are formed.
  • the side wall portion 61 is provided with core cover portions 6A and 6B that surround the peripheral surfaces and the upper surfaces of the outer core portions 32 and 32 of the combined body 10 when the combined body 10 is stored in the case 6 (see FIG. See also 1). That is, the core cover portions 6A and 6B have shapes corresponding to the outer peripheral surface shapes of the outer core portions 32 and 32.
  • the core cover portions 6A and 6B can effectively prevent the combined body 10 housed in the case 6 from falling off the case 6. This is because the upper opening portion of the side wall portion 61 is smaller than the combined body 10 by providing the core cover portions 6A and 6B.
  • the clearance between the inner peripheral surface of the core cover portions 6A and 6B and the outer peripheral surface of the outer core portions 32 and 32 is preferably about 0.5 to 3.0 mm.
  • the core cover portions 6A and 6B when the case 6 is filled with the sealing resin as shown in a third embodiment described later, the amount of the sealing resin is small. As a result, productivity advantages such as shortening of the filling time of the sealing resin and shortening of the curing time can be obtained (of course, there are also advantages in terms of cost).
  • the core cover part 6A on the front side of the sheet (the side where the ends 2a and 2b of the coil 2 of the combined body 10 are disposed) has two cylindrical terminal blocks 6Sa and 6Sb. One is provided. Screw holes are cut in the terminal blocks 6Sa and 6Sb, and the terminal members 8a and 8b can be screwed to the terminal blocks 6Sa and 6Sb (see also FIG. 1).
  • the core cover portion 6B on the back side of the paper surface (the side where the coil element connecting portion 2r of the coil 2 is disposed) is provided with a slide rail 6R serving as a mounting portion for a temperature measuring member 80 (see also FIG. 1) described later. Is provided.
  • a hook 6 ⁇ / b> F used when the temperature measuring member 80 is attached is provided at a position on the core cover portion 6 ⁇ / b> B side in the inner peripheral surface of the side wall portion 61.
  • the side wall part 61 provided with the said structure is comprised with resin.
  • resin for example, polybutylene terephthalate (PBT) resin, urethane resin, polyphenylene sulfide (PPS) resin, acrylonitrile-butadiene-styrene (ABS) resin, or the like can be used. Since these resins are excellent in electrical insulation, it is easy to ensure insulation between the coil 2 and the side wall portion 61 of the assembly 10.
  • These resins may contain at least one kind of ceramic filler selected from silicon nitride, alumina, aluminum nitride, boron nitride, mullite, and silicon carbide. And heat dissipation can be improved.
  • the side wall part 61 can also be formed with a metal.
  • the side wall portion 61 is made of a nonmagnetic metal such as aluminum, the side wall portion 61 can have an electromagnetic wave shielding function.
  • the case 6 in which the bottom plate portion 60 and the side wall portion 61 are seamlessly integrated can also be used as the case 6 that houses the combined body 10.
  • a converter case can also be used as the case 6.
  • the insulating sheet 7 ⁇ / b> A and the adhesive sheet 7 ⁇ / b> B are sheet-like members for bonding the combined body 10 to the bottom plate portion 60 of the case 6.
  • the insulating sheet 7A is a member for ensuring insulation between the bottom plate portion 60 made of a nonmagnetic metal and the combined body 10, and is attached to the bottom plate portion 60 with an adhesive or the like.
  • the adhesive sheet 7B is a member for firmly adhering the combined body 10 having a complex uneven shape to the insulating sheet 7A, with both surfaces being sticky and soft.
  • the insulation sheet 7A is required to have a predetermined withstand voltage characteristic (2.5 kV / 50 ⁇ m or more in the reactor 1).
  • the insulating sheet 7A has an excellent thermal conductivity of 0.1 W / m ⁇ K or more so that the heat generated in the coil 2 (coil elements 2A and 2B) can be effectively transmitted to the bottom plate portion 6.
  • the thermal conductivity is preferably as high as possible (particularly preferably 2.0 W / m ⁇ K or more).
  • the adhesive sheet 7 ⁇ / b> B is required to have insulation characteristics that can sufficiently insulate the coil 2 and the bottom plate portion 60, and heat resistance that does not soften to the highest temperature achieved when the reactor 1 is used.
  • a thermosetting resin such as an epoxy resin, a silicone resin, or an unsaturated polyester, or a thermoplastic insulating resin such as a PPS resin or a liquid crystal polymer (LCP) can be suitably used for the adhesive sheet 7B.
  • the insulating resin may contain the ceramic filler exemplified in the description of the side wall portion 61, and by doing so, the insulating properties and heat dissipation properties of the adhesive sheet 7B can be improved.
  • the thermal conductivity of the adhesive sheet 7B is preferably about the same as that of the insulating sheet 7A.
  • the reactor 1 of this embodiment includes a temperature measurement member 80 for monitoring the temperature of the combined body 10 during operation of the reactor 1.
  • the temperature measuring member 80 includes a known temperature sensor 81 such as a thermocouple, a wiring 82 connected to the temperature sensor 81, and a cylindrical holding portion 83 that holds an end of the wiring 82.
  • the wiring 82 is inserted into one opening of the cylindrical holding portion 83, and the wiring 82 is held inside the holding portion 83. Therefore, when the wiring of the measuring device outside the reactor 1 is inserted into the other opening of the holding portion 83, the temperature sensor 81 and the measuring device are electrically connected.
  • a slide groove is formed on the outer peripheral surface of the holding portion 83 so that the holding portion 83 can be attached to the slide rail 6R provided on the side wall portion 61 of the case 6 described above.
  • the insulating sheet 7A is attached to the upper surface of the bottom plate portion 60 using an adhesive, and the adhesive sheet 7B and the combined body 10 are placed on the insulating sheet 7A. Since the adhesive sheet 7 ⁇ / b> B has flexibility, it enters into the irregularities on the lower surface of the combined body 10, and the combined body 10 is fixed to the bottom plate portion 60.
  • the combination 10 may be fixed to the bottom plate 60 by applying or printing an adhesive on the upper surface of the bottom plate 60 and placing the combination 10 thereon.
  • the side wall 61 is covered from above the combined body 10, and the side wall 61 and the bottom plate 60 are integrated using a screw 63 (fixing member).
  • a screw 63 fixing member
  • the fourth mounting hole H4 of the side wall portion 61 and the second mounting hole H2 of the bottom plate portion 60 are used.
  • terminal members 8a and 8b are attached to the ends 2a and 2b of the coil 2 of the combined body 10, and the temperature measuring member 80 is disposed.
  • the terminal members 8a and 8b are shaped like slides, one end of which is pressed or welded to the ends 2a and 2b of the coil 2, and the middle part is fixed to the terminal blocks 6Sa and 6Sb with screws.
  • the other end of terminal member 8a, 8b (namely, connection end with the electric equipment which supplies electric power to reactor 1) is in a position lower than the upper end of case 6 (namely, the upper end of side wall part 61). Be placed.
  • the temperature measuring member 80 when the temperature measuring member 80 is disposed, the temperature sensor 81 is disposed between the coil elements 2A and 2B of the combined body 10 (see also FIG. 1). Further, the wiring 82 is hooked on the hook 6F of the side wall portion 61 over the groove between the coil elements 2A and 2B, and the holding portion 83 is fitted into the slide rail 6R.
  • a lid 9 is attached to the case 6. [Prepared materials] ⁇ lid ⁇ As shown in FIGS. 1 and 2, the lid 9 of the present embodiment has a size that covers the entire upper opening of the side wall 61. Further, the lid 9 includes a terminal cover portion 90 that projects from the upper opening of the side wall portion 61 when attached to the case 6.
  • a fastener 9 ⁇ / b> C that protrudes toward the internal space of the case 6 is formed in addition to the engaging protrusion 9 ⁇ / b> P already described.
  • the fastener 9 ⁇ / b> C of the present embodiment is formed in an annular shape and engages with an engaging claw 6 ⁇ / b> C provided on the inner wall surface of the side wall portion 61 of the case 6 described above.
  • the fastener 9C and the engaging claw 6C constitute a so-called snap-fit structure. With this snap fit structure, the lid 9 can be firmly fixed to the case 6.
  • the lid 9 is attached to the case 6, a part of the terminal members 8a and 8b (part fixed to the terminal blocks 6Sa and 6Sb) is covered by the terminal cover 90 of the lid 9, and the covered part is a machine. Protected from mechanical shock.
  • the reactor 1 completed as described above is attached to the cooling base. At the time of attachment, a screw may be applied to the third attachment hole H3 of the case 6.
  • the case-side pressing engagement portion 6Q in the present embodiment is a member that is connected to the inner wall surface of the case 6 near the upper opening and protrudes from the upper opening.
  • the case-side pressing engagement portion 6Q has a base portion 6Qb parallel to the wall surface of the side wall portion 61, and an outer surface side of the base portion 6Qb.
  • the overhang portions 6Qo and 6Qo are bowl-shaped portions, and the upper portion thereof is inclined toward the base portion 6Qb.
  • projection part 6Qo may be sufficient, fixation of the lid
  • the lid-side press engagement portion 9Q in the present embodiment is provided when the lid 9 is attached to the case 6 among the inner peripheral surfaces of the flange portion 91 provided in the lid 9. It is a part which contacts the overhang
  • the flange portion 91 is a portion that covers a portion near the opening of the outer wall surface of the case 6 when the lid 9 is attached to the case 6.
  • the flange 91 is also provided on the lid 9 of the first embodiment.
  • the inner peripheral surface of the flange portion 91 is in sliding contact with the overhanging portion 6Qo of the case side pressing engagement portion 6Q.
  • the case-side pressing engagement portion 6Q is pressed toward the inner side of the case 6, but at the same time, the inner peripheral surface (lid-side pressing engagement portion 9Q) of the flange portion 91 is pushed back by the elasticity of the base portion 6Qb.
  • the case lid side pressing engagement portion 6Q of the case 6 and the lid side pressing engagement portion 9Q of the lid 9 are pressed against each other, and the lid 9 is firmly fixed to the case 6, so The rattling and falling off of 9 are effectively prevented.
  • the lid side overhanging portion is covered with the lid side overhanging portion so that the lid side overhanging portion is disposed between the overhanging portions 6Qo and 6Qo of the case side pressing engagement portion 6Q. 9 may be formed.
  • the sealing resin When filling the case 6 with the sealing resin, the sealing resin fills the inside of the case 6 so as to cover almost all of the combined body 10 in the case 6 (excluding the end portions 2a and 2b of the coil 2). good.
  • the position of the combined body 10 in the case 6 can be fixed by the sealing resin.
  • the assembly 10 can be protected from mechanical impacts and corrosive atmospheres by the sealing resin.
  • the sealing resin also has a role as a heat dissipation path for releasing heat generated in the combined body 10 when the reactor 1 is operated to the case 6 side.
  • the filling amount of the sealing resin into the case 6 can be selected as appropriate.
  • the sealing resin may be filled to the full edge of the side wall portion 61 of the case 6.
  • the filling amount of the sealing resin into the case 6 is such that the sealing resin contacts any part of the lid 9. Do not use. That is, the upper end surface of the sealing resin in the case 6 is lower than the lower end of the lid 9 attached to the case 6 (the lower end of the engaging projection 9P or the lower end of the fastener 9C in FIG. 1). Thus, the filling amount of the sealing resin is adjusted.
  • the sealing resin is placed in the case 6 until the sealing resin contacts the lid 9 or a part of the lid 9 is embedded in the sealing resin. It is good to fill. By doing so, the lid 9 can be more firmly fixed to the case 6. Needless to say, when the lid 9 is fixed with the sealing resin, the lid 9 is attached to the case 6 before the sealing resin is cured.
  • the effect of providing the sealing resin that is, the fixing effect of the combined body 10 in the case 6, the protective effect of the combined body 10, and the combined body 10 occurred.
  • the lid 9 is stopped with the sealing resin, it is possible to more effectively prevent the lid 9 from rattling and dropping off from the case 6.
  • the reactors of the first to third embodiments include the snap fit structure that engages inside the case
  • the reactor may include a snap fit structure that engages outside the case.
  • a reactor without the snap-fit structure itself may be used. This is because rattling of the lid can be effectively suppressed by the engagement between the case lid side pressing engagement portion and the lid side pressing engagement portion.
  • the lid can be removed from the case.
  • the engagement between the case lid side pressing engagement portion and the lid side pressing engagement portion is strong, the lid is not easily removed even if the lid is removable.
  • the reactors of the first to third embodiments and the modified embodiments can be used, for example, as a component part of a converter mounted on a vehicle or the like, or a component part of a power conversion device including this converter.
  • a vehicle 1200 such as a hybrid vehicle or an electric vehicle is driven for driving by being driven by a main battery 1210, a power converter 1100 connected to the main battery 1210, and power supplied from the main battery 1210 as shown in FIG.
  • the motor (load) 1220 is provided.
  • the motor 1220 is typically a three-phase AC motor, which drives the wheel 1250 when traveling and functions as a generator during regeneration.
  • vehicle 1200 includes an engine in addition to motor 1220.
  • an inlet is shown as a charge location of the vehicle 1200, it is good also as a form provided with a plug.
  • the power conversion device 1100 includes a converter 1110 connected to the main battery 1210 and an inverter 1120 connected to the converter 1110 and performing mutual conversion between direct current and alternating current.
  • the converter 1110 shown in this example boosts the DC voltage (input voltage) of the main battery 1210 of about 200V to 300V to about 400V to 700V when the vehicle 1200 is running, and supplies the inverter 1120 with power.
  • converter 1110 steps down DC voltage (input voltage) output from motor 1220 via inverter 1120 to DC voltage suitable for main battery 1210 during regeneration, and causes main battery 1210 to be charged.
  • the inverter 1120 converts the direct current boosted by the converter 1110 into a predetermined alternating current when the vehicle 1200 is running, and supplies the motor 1220 with electric power. During regeneration, the alternating current output from the motor 1220 is converted into direct current and output to the converter 1110. is doing.
  • the converter 1110 includes a plurality of switching elements 1111, a drive circuit 1112 that controls the operation of the switching elements 1111, and a reactor L, and converts input voltage by ON / OFF repetition (switching operation). (In this case, step-up / down pressure) is performed.
  • a power device such as FET or IGBT is used.
  • the reactor L has the function of smoothing the change when the current is going to increase or decrease by the switching operation by utilizing the property of the coil that prevents the change of the current to flow through the circuit.
  • the reactor as described in the said embodiment and modified embodiment is used.
  • the vehicle 1200 is connected to the converter 1110, the power supply converter 1150 connected to the main battery 1210, and the sub-battery 1230 and the main battery 1210 that are power sources of the auxiliary devices 1240.
  • Auxiliary power supply converter 1160 for converting the high voltage 1210 to a low voltage is provided.
  • the converter 1110 typically performs DC-DC conversion, while the power supply device converter 1150 and the auxiliary power supply converter 1160 perform AC-DC conversion. Some power supply device converters 1150 perform DC-DC conversion.
  • the reactors of the power supply device converter 1150 and the auxiliary power supply converter 1160 have the same configuration as the reactors of the above-described embodiments and modifications, and a reactor whose size and shape are appropriately changed can be used.
  • the reactor of the above-described embodiment can be used for a converter that performs conversion of input power and that only performs step-up or converter that performs only step-down.
  • the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.
  • the configuration of the present invention can be applied to a reactor having only one coil element.
  • the reactor of the present invention can be used as a component part of a power conversion device such as a bidirectional DC-DC converter mounted on a vehicle such as a hybrid vehicle, an electric vehicle, or a fuel cell vehicle.
  • a power conversion device such as a bidirectional DC-DC converter mounted on a vehicle such as a hybrid vehicle, an electric vehicle, or a fuel cell vehicle.

Abstract

L'invention concerne une réactance dans laquelle, par rapport aux réactances classiques, le cliquetis du couvercle peut être supprimé de manière plus efficace avec une structure simple. La présente invention concerne une réactance (1) comprenant : un assemblage (10) d'une bobine (2) et d'un noyau magnétique ; un boîtier (6) ; et un couvercle (9). La bobine (2) est un élément fait en enroulant un enroulement. Le noyau magnétique (3) est un élément qui est passé à travers la partie interne de la bobine (2). Le boîtier (6) est un élément qui accueille l'assemblage (10) de la bobine (2) et du noyau magnétique (3). Le couvercle (9) est un élément qui recouvre au moins une partie d'une ouverture dans le boîtier (6). Le boîtier (6) et le couvercle (9) ont respectivement une partie de mise en prise par pression côté boîtier (6P) et une partie de mise en prise par pression côté couvercle (9P) qui appuyent l'une contre l'autre.
PCT/JP2013/063964 2012-07-24 2013-05-20 Réactance, convertisseur, et dispositif de conversion d'énergie électrique WO2014017150A1 (fr)

Applications Claiming Priority (2)

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JP2012164178A JP2014027026A (ja) 2012-07-24 2012-07-24 リアクトル、コンバータ、および電力変換装置
JP2012-164178 2012-07-24

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WO2014017150A1 true WO2014017150A1 (fr) 2014-01-30

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US20200176175A1 (en) * 2017-05-29 2020-06-04 Autonetworks Technologies, Ltd. Reactor
CN113674969A (zh) * 2020-05-15 2021-11-19 株式会社村田制作所 电感器部件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6394852B2 (ja) * 2014-02-17 2018-09-26 住友電装株式会社 リアクトル
JP6457730B2 (ja) * 2014-04-02 2019-01-23 株式会社タムラ製作所 リアクトル
WO2024004543A1 (fr) * 2022-06-30 2024-01-04 日立Astemo株式会社 Soupape de commande de passage d'écoulement

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JP2000277338A (ja) * 1999-03-26 2000-10-06 Tokin Corp ノイズフィルタ
JP2004281727A (ja) * 2003-03-17 2004-10-07 Tdk Corp 表面実装パッケージおよびそれを用いた電子部品
JP2008028308A (ja) * 2006-07-25 2008-02-07 Sumitomo Electric Ind Ltd 車載用リアクトル
JP2010135369A (ja) * 2008-12-02 2010-06-17 Denso Corp リアクトル
WO2011132361A1 (fr) * 2010-04-23 2011-10-27 住友電装株式会社 Réacteur

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JP2000277338A (ja) * 1999-03-26 2000-10-06 Tokin Corp ノイズフィルタ
JP2004281727A (ja) * 2003-03-17 2004-10-07 Tdk Corp 表面実装パッケージおよびそれを用いた電子部品
JP2008028308A (ja) * 2006-07-25 2008-02-07 Sumitomo Electric Ind Ltd 車載用リアクトル
JP2010135369A (ja) * 2008-12-02 2010-06-17 Denso Corp リアクトル
WO2011132361A1 (fr) * 2010-04-23 2011-10-27 住友電装株式会社 Réacteur

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Publication number Priority date Publication date Assignee Title
US20200176175A1 (en) * 2017-05-29 2020-06-04 Autonetworks Technologies, Ltd. Reactor
US11621119B2 (en) * 2017-05-29 2023-04-04 Autonetworks Technologies, Ltd. Reactor
CN113674969A (zh) * 2020-05-15 2021-11-19 株式会社村田制作所 电感器部件

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