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WO2016021036A1 - Stator de machine électrique rotative, et machine électrique rotative - Google Patents

Stator de machine électrique rotative, et machine électrique rotative Download PDF

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Publication number
WO2016021036A1
WO2016021036A1 PCT/JP2014/070965 JP2014070965W WO2016021036A1 WO 2016021036 A1 WO2016021036 A1 WO 2016021036A1 JP 2014070965 W JP2014070965 W JP 2014070965W WO 2016021036 A1 WO2016021036 A1 WO 2016021036A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
resin
electrical machine
rotating electrical
electric machine
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/JP2014/070965
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English (en)
Japanese (ja)
Inventor
孝仁 村木
悟 天羽
康太郎 荒谷
義昭 岡部
唯 新井
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to PCT/JP2014/070965 priority Critical patent/WO2016021036A1/fr
Publication of WO2016021036A1 publication Critical patent/WO2016021036A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/30—Windings characterised by the insulating material

Definitions

  • the present invention relates to a stator for a rotating electrical machine using an insulating resin composition and a rotating electrical machine.
  • the first resin member is thinly attached to the second coil end group in which the plurality of joint portions formed by joining the first coil end group having the turn portion and the tip end portion are arranged.
  • the second resin member is thickly attached only in the vicinity of the joint portion of the second coil end group (see, for example, Patent Document 1).
  • Patent Document 1 it is necessary to use two types of resin members, and the second resin member is thickly attached only in the vicinity of the joint portion of the second coil end group.
  • the thickness of the resin member at the coil end may be substantially uniform, and there is no necessity to increase the thickness only near the joint.
  • double production equipment is required for adhesion and curing of the resin members, and by thickening only the joint portion, material is required more than the resin members necessary for withstand voltage. There was such a problem.
  • Patent Document 2 is an alternative to the second resin member (powder epoxy-based varnish) used in Patent Document 1 and the like, and prevents dust by using a liquid resin in the joint portion. .
  • the above problems remain as it is intended to use only the bonding portion and to use two types of resin members.
  • the present application includes a plurality of means for solving the above problems, but in a stator for a rotating electrical machine in which a stator coil is disposed in a slot of a stator core, the stator coil is composed of a plurality of segment conductors, The segment conductor is characterized in that it is covered with a thermosetting resin composition containing an inorganic filler and fine rubber particles.
  • Sectional drawing which shows the rotary electric machine provided with the stator by this invention.
  • the figure (1) which expanded conductor part vicinity of the welding side coil end.
  • the figure (2) which expanded conductor part vicinity of the welding side coil end.
  • an electric motor used for a hybrid car is used as an example of the rotating electric machine.
  • the “axial direction” refers to the direction along the rotation axis of the rotating electrical machine.
  • the circumferential direction refers to the direction along the rotation direction of the rotating electrical machine.
  • the “radial direction” refers to a radial direction (radial direction) around the rotation axis of the rotating electrical machine.
  • the “inner circumferential side” refers to the radially inner side (inner diameter side), and the “outer circumferential side” refers to the opposite direction, that is, the radially outer side (outer diameter side).
  • the present invention includes a plurality of means for solving the above problems, and one example thereof includes a stator core provided with a plurality of slots, and a stator coil provided in the slots, The slot is provided with N (where N is a positive even number) segment conductors, and the stator coil is connected to a plurality of the segment conductors via welds provided at conductor ends of the segment conductors.
  • the conductor ends are annularly arranged circumferentially at one coil end in the axial direction to form an annular array of N rows, and at one coil end in the axial direction between at least a pair of the annular arrays
  • the whole of the stator coil is substantially uniformly covered only with a thermosetting resin having a fusing property, and the thermosetting resin (A) inorganic Agent, was found (B) that the thermosetting resin composition containing fine rubber particles are preferred.
  • FIG. 1 shows the difference between the present invention and the prior art.
  • different resins were used for the insulation film of the winding, the insulation of the welding portion, and the fixation of the coil.
  • thermosetting resin composition of the present invention these objects can be achieved only with the same resin. Can be achieved.
  • FIG. 2 is a cross-sectional view showing a rotating electrical machine provided with a stator according to the present invention.
  • the rotary electric machine 10 includes a housing 50, a stator 20, a stator core 21, a stator coil 60, and a rotor 11.
  • the stator 20 is fixed to the inner peripheral side of the housing 50.
  • the rotor 11 is rotatably supported on the inner peripheral side of the stator 20.
  • the housing 50 constitutes an outer cover of a motor which is formed into a cylindrical shape by cutting of an iron-based material such as carbon steel, or by casting of cast steel or an aluminum alloy, or by pressing.
  • the housing 50 is also referred to as a frame or a frame.
  • the stator 20 is configured of a stator core 21 and a stator coil 60.
  • the stator core 21 is made by laminating thin plates of silicon steel plates.
  • the stator coils 60 are wound around slots 15 provided in large numbers on the inner peripheral portion of the stator core 21.
  • the rotor 11 is composed of a rotor core 12 and a rotating shaft 13.
  • the rotor core 12 is made by laminating thin plates of silicon steel plates.
  • the rotating shaft 13 is fixed to the center of the rotor core 12.
  • the rotating shaft 13 is rotatably held by a bearing (not shown), and rotates at a predetermined position in the stator 20 at a position facing the stator 20.
  • the rotor 11 is also provided with a permanent magnet 18 and an end ring (not shown).
  • the detailed structure of the principal part of the stator 20 used for the rotary electric machine 10 by this invention is demonstrated using FIG.
  • the stator 20 is composed of a stator iron core 21 and a stator coil 60 wound around slots 15 provided in large numbers on the inner peripheral portion of the stator iron core 21.
  • the stator coil 60 uses a conductor (a copper wire in the present embodiment) having a substantially rectangular cross section to improve the space factor in the slot and improve the efficiency of the rotary electric machine.
  • the stator coil 60 is covered with a resin member 601.
  • the two adjacent stator coils 60 are bonded by a resin member 601, and the stator 60 and the stator core 21 are bonded by a resin member 601.
  • the resin member is also referred to as a resin composition.
  • slot liners may be disposed in each slot 15 to ensure electrical insulation between the stator core 21 and the stator coil 60.
  • FIG. 4 and 5 are enlarged views of the vicinity of the conductor end of the welding side coil end 62.
  • the segment conductor 28 (hereinafter referred to as the conductor 28) has an insulating covering portion 29A covered with the resin member 601, and a conductor exposed portion 29B in which the insulating coating is peeled off and the conductor portion (copper wire) is exposed.
  • the conductor exposed portion 29B is provided at the end of the conductor 28. Exposure of this conductor portion is done for welding. After welding, by covering the conductor exposed portion 29B with only the cured product of the resin member 601, the conductor 28 is substantially uniformly covered by the resin member 601 as shown in FIG.
  • Patent Document 1 Although two types of resin members (a first resin member and a second resin member) are used in Patent Document 1, only one type of resin member is used in the present invention, and coating with the same member is performed. There is. As a result, in the present invention, it is not necessary to prepare double production equipment for adhesion and drying for each different resin member, and there is an effect that a disadvantageous resin-resin interface does not occur in terms of withstand voltage and adhesion.
  • FIG. 6 is an enlarged view of the vicinity of the anti-welding side coil end apex 28C of the anti-welding side coil end 61. As shown in FIG. At the non-welding side coil end 61, the entire circumference of the conductor 28 is covered substantially uniformly with only the cured product of the resin member 601.
  • Patent Document 1 Although two types of resin members (a first resin member and a second resin member) are used in Patent Document 1, only one type of resin member is used in the present invention, and coating with the same member is performed. There is. As a result, in the present invention, it is not necessary to prepare double production equipment for adhesion and drying for each different resin member, and there is an effect that the material more than the resin member necessary for withstand voltage is unnecessary.
  • the resin used to form the insulating film is a phenoxy resin having a thermosetting property from the viewpoints of cost and insulation, adhesiveness, and curability.
  • the feature of the present invention relates to the coil insulation of the stator, so the rotor is not a permanent magnet type but an induction type, synchronous reluctance,
  • the present invention is also applicable to a claw pole type.
  • the winding method is a wave winding method, any winding method having similar characteristics is applicable.
  • an inner rotation type is described, the same applies to an outer rotation type.
  • the radial gap type has been described, the axial gap type is also applicable.
  • the insulated wire according to the present invention is a wire in which an insulating resin layer is formed by a conductor and an extrusion process, and the insulating resin layer of the wire has a high elongation at the time of electrical work, and the self-bonding property is obtained by heat treatment after the electrical work. It is characterized by having a thermosetting resin.
  • the winding according to the present embodiment is an electric wire that is suitable for a rotating electrical machine and can be used in a high density environment in which the electric wires are in close contact with each other by being wound.
  • the thermosetting resin does not crack or float at the time of winding work, and is later self-fused at the time of heat treatment and then crosslinked.
  • thermosetting resin composition in which a scale-like inorganic filler and fine rubber particles are blended to increase the elongation of the resin to a low viscosity thermosetting resin consisting of an epoxy resin having a similar skeleton and a curing agent etc. I found something new.
  • the conductor according to the present embodiment is a linear conductor similar to the core wire of a general insulated wire, and is formed of a copper wire, an aluminum wire, an alloy wire thereof, or the like.
  • the copper wire may be made of any of tough pitch copper, oxygen free copper and deoxidized copper, and may be any of soft copper wire and hard copper wire. Moreover, the plating copper wire by which tin, nickel, silver, aluminum, etc. were plated on the surface may be sufficient.
  • the aluminum wire may be any of hard aluminum wire, semi-hard aluminum wire and the like. Also, as alloy wires, copper-tin alloy, copper-silver alloy, copper-zinc alloy, copper-chromium alloy, copper-zirconium alloy, aluminum-copper alloy, aluminum-silver alloy, aluminum-zinc alloy, aluminum-iron alloy And aluminum alloy (Aldrey Aluminum).
  • alloy wires copper-tin alloy, copper-silver alloy, copper-zinc alloy, copper-chromium alloy, copper-zirconium alloy, aluminum-copper alloy, aluminum-silver alloy, aluminum-zinc alloy, aluminum-iron alloy And aluminum alloy (Aldrey Aluminum).
  • the insulating resin layer according to the present embodiment is characterized by having an inorganic filler and fine rubber particles.
  • Inorganic fillers include talc (fine powder talc, average particle size 2.5 to 8 ⁇ m, Nippon Talc Co., Ltd.), mica powder (Micro mica MK series, average particle size 3 to 20 ⁇ m, Coop Chemical Co., Ltd.), glass Flakes (average particle diameter: 10 to 40000 ⁇ m, manufactured by Nippon Sheet Glass Co., Ltd.), hexagonal boron nitride (Shouwoobi N (R) UHP, average particle diameter: 0.2 to 12 ⁇ m, manufactured by Wadenko Co., Ltd.), etc. may be mentioned.
  • the particles preferably have an average particle size of 30 ⁇ m or less, preferably in the range of 2 to 20 ⁇ m. Any of these may be surface-treated with a silane. As these shapes, scale-like ones in which many hydrogen bonds can be formed between the hydroxyl group of the filler and the hydroxyl group of the resin are preferable.
  • the particle diameter is preferably in the range of 50 to 800 nm, which is easy to knead and the viscosity of the resin does not increase, and the resin is excellent in crack resistance.
  • the insulating resin layer according to this embodiment is characterized by using a thermoplastic phenoxy resin having a bisphenol A skeleton and a bisphenol F skeleton.
  • a phenoxy resin having a bisphenol A skeleton and a bisphenol F skeleton “YP-70” (Nippon Steel & Sumikin Chemical Co., Ltd.) can be used.
  • the phenoxy resin may be an acrylic modified phenoxy resin or a vinyl modified phenoxy resin. Acrylic modification is 1 type of vinyl modification.
  • "YP-50" (Nippon Steel & Sumikin Chemical Co., Ltd.) having only a bisphenol A type framework can be used simultaneously with "YP-70".
  • the method of applying the insulating resin layer to the conductor according to the present embodiment includes coating of a varnished resin, drying of a solvent, extrusion molding, and the like, but extrusion molding is desirable from the viewpoint of maintaining uniformity of coating.
  • the main component (50% by weight or more of the entire insulating resin layer as a whole) is composed of a thermoplastic resin and crosslinked by heat treatment after the extrusion process. . Therefore, after the extrusion process and before the heat treatment, it does not flow. In this non-flowing state, the insulating resin layer has self-bonding properties. The insulating resin layer is converted to a thermosetting resin by crosslinking, and the heat resistance is improved.
  • thermoplastic resin which the insulating resin layer which concerns on this embodiment contains, a phenoxy resin is preferable.
  • a crosslinking agent for crosslinking a thermoplastic resin a bismaleimide compound, an epoxy compound, and block isocyanate are mentioned.
  • an epoxy compound it is preferable to contain an imidazole as a catalyst.
  • aromatic epoxy resin alicyclic epoxy resin, novolak epoxy resin, aliphatic epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, glycidyl acrylic epoxy resin, bisphenol A epoxy resin, bisphenol F Type epoxy resin, or polyester type epoxy resin.
  • jER1001, jER1002, jER1003, jER1004, jER1006, jER1007, etc. of bisphenol A epoxy resins having basic hydroxyl groups similar to that of phenoxy resin and having alcoholic hydroxyl groups are preferable.
  • blocked isocyanates examples include Duranate series “17B-60P” and “TPA-B80E” (manufactured by Asahi Kasei Chemicals Corporation).
  • the insulating resin layer according to the present embodiment contains an epoxy-containing compound, an amine catalyst, an imidazole, an aromatic sulfonium salt or the like can be used as a catalyst.
  • an amine catalyst an imidazole, an aromatic sulfonium salt or the like
  • the additive demonstrated here contributes to a crosslinking reaction.
  • the phenol resin includes phenol aralkyl resin (having a phenylene skeleton, a diphenylene skeleton and the like), naphthol aralkyl resin and polyoxystyrene resin.
  • phenol resin resol type phenol resin such as aniline modified resole resin, dimethyl ether resol resin, phenol novolac resin, cresol novolac resin, tert-butyl phenol novolac resin, novolak type phenol resin such as nonylphenol novolac resin, and dicyclopentadiene modified
  • phenolic resins such as phenolic resins, terpene-modified phenolic resins, and triphenolmethane-type resins may be mentioned.
  • Polyoxystyrene resins include poly (p-oxystyrene). Among them, H-4 having a phenol novolac mp of 100 ° C. or less is preferable.
  • acid anhydrides include tetrahydrophthalic anhydride and hexahydrophthalic anhydride.
  • amine catalysts examples include metaxylenediamine, trimethylhexamethylenediamine and imidazoles. Specific examples thereof include 2-phenylimidazole and diazabicycloundecene.
  • the film thickness of the insulating resin layer according to the present embodiment is preferably 50 ⁇ m or more. If the film thickness of the insulating resin layer is 50 ⁇ m or more, the pressure resistance of the insulated wire can be secured in a high density state where the insulated wires are in close contact with each other.
  • another insulating resin layer may be included inside the insulating resin layer.
  • thermosetting resin of the present invention known coupling agents such as epoxysilane, aminosilane, ureidosilane, vinylsilane, alkylsilane, organic titanate, aluminum alkylate, etc. may be used alone or in combination of two or more kinds. , Can be blended as needed.
  • the feature of the present invention is that the insulating resin layer of the insulated wire comprises thermoplastic phenoxy resin, epoxy resin, crosslinking agent, inorganic filler, fine rubber particles, and as shown in Table 1, phenoxy resin, epoxy
  • the inorganic filler is 15 to 30 parts by weight and the fine rubber particles are 3 to 10 parts by weight.
  • the elongation percentage can be improved by using an inorganic filler or fine rubber particles.
  • the electric wire according to the present invention is characterized by having 3 to 15 parts by weight of maleimide.
  • the heat resistance can be improved while suppressing the increase in viscosity.
  • the electric insulation wire of the present invention is characterized in that the insulating resin layer has a self-bonding property.
  • flake mica having an average particle diameter in the range of 2 to 20 ⁇ m as the inorganic filler.
  • the average particle diameter of the fine rubber particles is preferably in the range of 50 to 800 nm.
  • composition example of the present invention is shown and explained concretely, the technical scope of the present invention is not limited to these.
  • material used by this invention is shown. These were used as they were.
  • YP-50 (Nippon Steel & Sumitomo Metal Chemical, phenoxy resin)
  • YP-70 (Nippon Steel & Sumitomo Metal Chemical, phenoxy resin)
  • EP 828 (Mitsubishi Chemical Corporation, epoxy resin)
  • EP1001 Mitsubishi Chemical Corporation, epoxy resin
  • EP 1004 Mitsubishi Chemical Corporation, epoxy resin
  • YDCN-700-7 Nippon Steel & Sumikin Chemical, epoxy resin
  • H-4 Meiwa Chemical, phenol curing agent
  • P200 (Mitsubishi Chemical Corporation, imidazole based curing accelerator) 2PHZ-PW (Shikoku Kasei, imidazole based curing accelerator)
  • BMI-2300 (Daiwa Chemical Industries, phenylmethane maleimide)
  • SJ 005 (Yamag
  • composition shown in Table 1 was placed in a polyethylene bag and roughly blended, and this was blended in a cleaned twin-screw kneader (Imoto Co., Ltd., model IMC-197C, temperature 125 ° C., rotation speed 20 rpm) and kneaded , Tablet-like thermosetting resin was obtained.
  • a cleaned twin-screw kneader Imoto Co., Ltd., model IMC-197C, temperature 125 ° C., rotation speed 20 rpm
  • thermosetting resin used as an insulating resin tree.
  • the insulating resin layer of the thermosetting resin in Table 1 is extruded at 140 ° C. on the outer circumference of the square by extrusion. Further extrusion formation was carried out.
  • the target was a resin thickness of 0.10 mm, and extrusion was performed while changing the tensile speed of the square line to 5 to 30 m / min.
  • the resin thickness of the winding changes depending on the extrusion speed of the resin, the speed of the angle line, and the viscosity of the resin. After cooling the winding, it was wound up with a pulley.
  • thermosetting resin The elongation percentage of this extruded thermosetting resin was 42%. After extrusion molding of the winding obtained here, it baked at 180 degreeC in a thermostat for 1 hour, and obtained the insulated wire of resin thickness about 0.1 mm which concerns on Example 1.
  • FIG. 1 The elongation percentage of this extruded thermosetting resin was 42%. After extrusion molding of the winding obtained here, it baked at 180 degreeC in a thermostat for 1 hour, and obtained the insulated wire of resin thickness about 0.1 mm which concerns on Example 1.
  • the cured product was heated at a constant temperature (5 ° C./min) from room temperature to 250 ° C. by a differential scanning calorimeter, but no heat generation was observed with crosslinking of the thermosetting resin, 180 It was confirmed that crosslinking was completed in 1 hour.
  • Self-adhesiveness was confirmed as follows.
  • the two windings of 1 m in length obtained in Example 1 were heated sideways at 180 ° C. for 1 hour in a hot air dryer while being overlapped sideways.
  • the distance between the conductors of the crosslinked winding was 0.18 mm, and the wires were strongly bonded.
  • conduction between the windings was not confirmed.
  • FIG. 7 is a schematic cross-sectional view of the insulated wire according to Composition Example 1.
  • the conductor 72 has a core wire having a square cross section, and the insulating resin layer 73 containing phenoxy resin as a main component covers the entire periphery of the conductor 72.
  • composition Examples 2 to 6 will be described below.
  • An insulated wire according to an example in which two insulating resin layers were laminated on a conductor was manufactured.
  • a copper square wire was used as the conductor.
  • the inner layer in the resin laminate was formed of thermosetting polyimide varnish “Sun Ever SE-150” (manufactured by Nissan Chemical Industries, Ltd.), and the insulating resin layer of the outer layer was formed of the resin mixture of Example 1.
  • thermosetting polyimide was applied to the outer periphery of the conductor 72 and temporarily dried at room temperature. And it baked at 300 degreeC in a thermostat for 1 hour, and formed the resin layer (inner layer) of polyimide.
  • the thickness of the formed resin layer (inner layer) was 10 to 15 ⁇ m.
  • the insulated wire in which the insulating resin layer which comprises resin by extrusion molding was formed in the outer periphery of this resin layer (inner layer) was produced based on Example 1.
  • the film thickness of the resin layer (outer layer) was 0.10 mm.
  • FIG. 8 is a schematic cross-sectional view of the insulated wire according to Composition Example 2.
  • the conductor 72 has a core wire having a square cross section, and the inner layer insulating resin layer 74 which is a thermosetting polyimide covers the entire periphery of the conductor 72.
  • the outer periphery is covered with the thermosetting resin produced in Example 1 as the outer layer insulating resin layer 75.
  • thermosetting polyimide layer as the inner insulating resin layer 74.
  • composition example 3 The insulated wire of composition example 3 was obtained according to composition example 1 with the composition shown in Table 1.
  • the insulated wire of Composition Example 4 was obtained in accordance with Composition Example 1 using the composition shown in Table 1.
  • the insulated wire of Composition Example 5 was obtained in accordance with Composition Example 1 using the compositions shown in Table 1 as well.
  • composition example 6 The insulated wire of composition example 6 was obtained according to composition example 1 with the composition shown in Table 1 as well.
  • the heat resistance index is 200 to 210 ° C., which is the same as that of super engineering plastic. Moreover, it was confirmed that the dielectric breakdown strength is 35 kV / mm or more even after heating at 260 ° C./20 days, and it was found that all can sufficiently withstand practical use.
  • the coating method of the coil welding part of the stator 20 by resin of the said composition is described.
  • the coiled portion is covered with the resin member 601 with a resin protrusion, a film molded in advance, or the like.
  • the resin member 601 applied to the stator 20 is completely cured by heating.
  • the main heating is by a conventional method such as a hot air type heating furnace or an IH heating furnace, and is not particularly limited. Further, in the main heating step, it is also possible to simultaneously bond the resin members 601 between the coils in the slots.
  • the present invention is not limited to the embodiments described above, but includes various modifications.
  • the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

La présente invention concerne une machine électrique rotative qui possèdent d'excellentes propriétés d'isolation électrique. Un stator de machine électrique rotative selon la présente invention comporte une bobine de stator disposée dans une fente du noyau de stator en fer. Ladite bobine de stator est constituée par une pluralité de conducteurs à segments et lesdits conducteurs à segments sont recouverts avec un matériau de remplissage inorganique et une composition de résine thermodurcissable contenant de fines particules de caoutchouc.
PCT/JP2014/070965 2014-08-08 2014-08-08 Stator de machine électrique rotative, et machine électrique rotative Ceased WO2016021036A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2014/070965 WO2016021036A1 (fr) 2014-08-08 2014-08-08 Stator de machine électrique rotative, et machine électrique rotative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/070965 WO2016021036A1 (fr) 2014-08-08 2014-08-08 Stator de machine électrique rotative, et machine électrique rotative

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WO2016021036A1 true WO2016021036A1 (fr) 2016-02-11

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002015621A (ja) * 2000-06-29 2002-01-18 Toshiba Corp 電気絶縁材料及びその製造方法
JP2006158024A (ja) * 2004-11-26 2006-06-15 Sumitomo Electric Ind Ltd コイル及びその製造方法
JP2007259577A (ja) * 2006-03-23 2007-10-04 Denso Corp 回転電機
JP2008236924A (ja) * 2007-03-22 2008-10-02 Hitachi Ltd 回転電機及び電気自動車
JP2009073933A (ja) * 2007-09-20 2009-04-09 Toto Kasei Co Ltd 耐熱劣化性を有するエポキシ樹脂組成物
JP2009102586A (ja) * 2007-10-25 2009-05-14 Kyocera Chemical Corp 熱硬化性樹脂組成物、硬化物および高熱伝導コイル
JP2011205834A (ja) * 2010-03-26 2011-10-13 Aisin Aw Co Ltd ステータの製造方法
JP2011234504A (ja) * 2010-04-27 2011-11-17 Honda Motor Co Ltd モータの固定子の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002015621A (ja) * 2000-06-29 2002-01-18 Toshiba Corp 電気絶縁材料及びその製造方法
JP2006158024A (ja) * 2004-11-26 2006-06-15 Sumitomo Electric Ind Ltd コイル及びその製造方法
JP2007259577A (ja) * 2006-03-23 2007-10-04 Denso Corp 回転電機
JP2008236924A (ja) * 2007-03-22 2008-10-02 Hitachi Ltd 回転電機及び電気自動車
JP2009073933A (ja) * 2007-09-20 2009-04-09 Toto Kasei Co Ltd 耐熱劣化性を有するエポキシ樹脂組成物
JP2009102586A (ja) * 2007-10-25 2009-05-14 Kyocera Chemical Corp 熱硬化性樹脂組成物、硬化物および高熱伝導コイル
JP2011205834A (ja) * 2010-03-26 2011-10-13 Aisin Aw Co Ltd ステータの製造方法
JP2011234504A (ja) * 2010-04-27 2011-11-17 Honda Motor Co Ltd モータの固定子の製造方法

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