JPH07288950A - Electric motor for vehicle-driving - Google Patents
Electric motor for vehicle-drivingInfo
- Publication number
- JPH07288950A JPH07288950A JP6098083A JP9808394A JPH07288950A JP H07288950 A JPH07288950 A JP H07288950A JP 6098083 A JP6098083 A JP 6098083A JP 9808394 A JP9808394 A JP 9808394A JP H07288950 A JPH07288950 A JP H07288950A
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- inverter
- refrigerant
- vehicle
- housing
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電気自動車に搭載する
車両駆動用電動機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor for driving a vehicle mounted on an electric vehicle.
【０００２】[0002]
【従来の技術】電気自動車の駆動系を構成する電動機や
機器等の小型軽量化の試みは、特開平５−２１９６０７
号公報及び実開平５−２５９８８号公報等によりなされ
ている。しかしながら、駆動系とこの駆動系を冷却する
冷却システムとを含めた総合的な小型軽量化の試みはな
されていない。2. Description of the Related Art Attempts to reduce the size and weight of electric motors, devices, etc. that constitute the drive train of an electric vehicle have been made in Japanese Patent Laid-Open No. 219607/1993.
And Japanese Utility Model Publication No. 5-25988. However, no attempt has been made to reduce the overall size and weight of the drive system and the cooling system for cooling the drive system.
【０００３】[0003]
【発明が解決しようとする課題】電気自動車の駆動系の
冷却システムは、車両の居住性を高めるために、広い放
熱面積を必要としない液冷方式が採用されつつある。と
ころが、図５に示すように、冷媒を用いる液冷却方式に
より蓄電池ａの直流電力を交流電力に変換するインバー
タｂを冷却する場合は、冷却装置ｃと冷媒の熱を放出す
る熱交換器ｄとの間に冷媒循環経路ｅを構成するととも
に、冷媒循環用の電動ポンプｆ等を必須とする。このた
め、冷却システムの車両に対する占有容積が大きくなる
ばかりでなく、居住区画への熱伝導を遮断する対策が必
要となって小型化が容易でない。さらに、車両駆動用電
動機ｇをも上記液冷却方式で冷却しようとすると、電動
ポンプｆや熱交換器ｄが大型化してしまい、車両駆動用
電動機ｇとインバータｂを一体化し、さらに減速機ｈや
デファレンシャルギヤｉ等の動力伝達機構をコンパクト
に纏めて配置しても、前記冷却システムを含めた駆動系
全体の小型化は一層困難になる等の問題点がある。本発
明は上記問題点を解決するためになされたもので、駆動
系とこれを冷却する冷却システムを含めた全体構成を小
型軽量化した電気自動車の駆動用電動機を提供すること
を目的とする。As a cooling system for a drive system of an electric vehicle, a liquid cooling system which does not require a large heat dissipation area is being adopted in order to enhance the comfortability of the vehicle. However, as shown in FIG. 5, when cooling the inverter b that converts the DC power of the storage battery a into AC power by a liquid cooling method using a refrigerant, a cooling device c and a heat exchanger d that releases the heat of the refrigerant are used. A refrigerant circulation path e is formed between the two, and an electric pump f for circulating the refrigerant is essential. Therefore, not only the volume occupied by the cooling system for the vehicle becomes large, but also a measure for cutting off heat conduction to the living space is required, which makes it difficult to reduce the size. Furthermore, if the vehicle driving electric motor g is also cooled by the liquid cooling method, the electric pump f and the heat exchanger d become large in size, the vehicle driving electric motor g and the inverter b are integrated, and the speed reducer h and Even if the power transmission mechanisms such as the differential gear i are arranged compactly, there is a problem that it becomes more difficult to downsize the entire drive system including the cooling system. The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric motor for driving an electric vehicle in which the overall configuration including a drive system and a cooling system for cooling the drive system is reduced in size and weight.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の請求項１に記載の本発明の車両駆動用電動機は、直流
電力を交流電力に変換するインバータと、該インバータ
から供給される交流電力により回転する電動機を一体に
組み込むとともに、冷却手段の冷媒を循環させる冷媒循
環経路を前記インバータと前記電動機との間に形成した
ことを特徴とする。According to a first aspect of the present invention, there is provided an electric motor for driving a vehicle according to claim 1, wherein an inverter for converting DC power into AC power and AC power supplied from the inverter. The electric motor rotating by means of the above is integrally incorporated, and a refrigerant circulation path for circulating the refrigerant of the cooling means is formed between the inverter and the electric motor.
【０００５】上記目的を達成するための請求項２に記載
の本発明の車両駆動用電動機は、上記請求項１記載の構
成において、前記インバータよりも下流側の前記冷媒循
環経路に、前記電動機を配設したことを特徴とする。According to a second aspect of the present invention, there is provided a vehicle driving electric motor according to the first aspect, wherein the electric motor is provided in the refrigerant circulation path downstream of the inverter. It is characterized in that it is provided.
【０００６】上記目的を達成するための請求項３に記載
の本発明の車両駆動用電動機は、上記請求項１又は請求
項２記載の構成において、２個の前記電動機を回転子軸
に沿って直列状に配置し、前記電動機間に前記インバー
タを配置して一体化したことを特徴とする。In order to achieve the above object, a vehicle driving electric motor according to a third aspect of the present invention is the electric motor for driving a vehicle according to the first or second aspect, wherein the two electric motors are arranged along a rotor shaft. It is characterized in that they are arranged in series and the inverter is arranged between the electric motors to be integrated.
【０００７】上記目的を達成するための請求項４に記載
の本発明の車両駆動用電動機は、上記請求項１乃至請求
項３記載の構成において、前記冷媒循環経路を循環する
冷媒に潤滑油を用い、前記電動機の回動機構部分を潤滑
することを特徴とする。According to a fourth aspect of the present invention, there is provided a vehicle driving electric motor as set forth in the first to third aspects, in which lubricating oil is circulated in the refrigerant circulating path. It is characterized in that the rotating mechanism portion of the electric motor is lubricated.
【０００８】上記目的を達成するための請求項５に記載
の本発明の車両駆動用電動機は、上記請求項１乃至請求
項４記載の構成において、前記電動機の前記回転子軸に
は、中心軸孔と該中心軸孔に連通する半径方向の噴出孔
を形成し、前記冷媒循環経路から電動機に供給される冷
媒を前記回転子軸の回転に伴う遠心力により、前記電動
機内部に噴出させることを特徴とする。According to a fifth aspect of the present invention, there is provided a vehicle driving electric motor according to the first to fourth aspects, wherein the rotor shaft of the electric motor has a central shaft. A hole and a radial ejection hole communicating with the central shaft hole are formed, and the refrigerant supplied from the refrigerant circulation path to the electric motor is ejected into the electric motor by a centrifugal force generated by the rotation of the rotor shaft. Characterize.
【０００９】[0009]
【作用及び発明の効果】請求項１に記載の本発明の車両
駆動用電動機によれば、冷却手段の冷媒が一体に組み込
まれたインバータと電動機との間に形成された冷媒循環
経路を循環する。従って、インバータと電動機を一体化
したハウジング内に冷媒循環経路を形成して短縮化でき
るから、冷却手段を含めた駆動系全体の構成が小型化さ
れて、車両の車室区画の拡大に寄与することができる。
また、上記一体化により冷媒循環経路を、車両の衝撃や
振動を吸収する可撓性のパイプにより形成する必要がな
くコスト高となることもなく、保守点検等のメインテナ
ンスも能率的に行うことができる等の効果がある。According to the electric motor for driving a vehicle of the present invention described in claim 1, the refrigerant of the cooling means circulates in the refrigerant circulation path formed between the inverter and the electric motor integrally incorporated. . Therefore, since the refrigerant circulation path can be formed and shortened in the housing in which the inverter and the electric motor are integrated, the entire structure of the drive system including the cooling means can be downsized, which contributes to the expansion of the compartment of the vehicle. be able to.
Further, due to the above integration, it is not necessary to form the refrigerant circulation path by a flexible pipe that absorbs shocks and vibrations of the vehicle, the cost is not increased, and maintenance such as maintenance and inspection can be efficiently performed. There are effects such as being able to.
【００１０】請求項２に記載の本発明の車両駆動用電動
機によれば、インバータを冷却した冷媒により電動機が
冷却される。従って、発熱量が多いインバータを効率的
に冷却することができる効果がある。According to the vehicle driving electric motor of the second aspect of the present invention, the electric motor is cooled by the refrigerant that has cooled the inverter. Therefore, there is an effect that the inverter that generates a large amount of heat can be efficiently cooled.
【００１１】請求項３に記載の本発明の車両駆動用電動
機によれば、冷却手段の冷媒はインバータを冷却した
後、両側の電動機に流入して該電動機を冷却する。イン
バータを回転子軸に沿って直列状に配置した２個の電動
機の間に設けて一体化したから、インバータの冷却及び
冷媒の循環を効率的に行うことができる効果がある。According to the vehicle driving electric motor of the third aspect of the present invention, the refrigerant of the cooling means cools the inverter and then flows into the electric motors on both sides to cool the electric motor. Since the inverter is provided between two electric motors arranged in series along the rotor shaft and integrated, there is an effect that cooling of the inverter and circulation of the refrigerant can be efficiently performed.
【００１２】請求項４に記載の本発明の車両駆動用電動
機によれば、冷媒に用いた潤滑油が電動機の回動機構部
分を潤滑する。電動機の冷却とともに回動機構部分の潤
滑を同時に行うことができる効果がある。According to the electric motor for driving a vehicle of the present invention described in claim 4, the lubricating oil used as the refrigerant lubricates the rotation mechanism portion of the electric motor. There is an effect that the rotation mechanism portion can be lubricated at the same time as the cooling of the electric motor.
【００１３】請求項５に記載の本発明の車両駆動用電動
機によれば、回転子が回転すると、該回転子の中心軸孔
に連通する半径方向の噴出孔から、冷媒が電動機内部に
向かって噴出する。このため、通電により発熱する電機
子コイルの巻線部や回転子を冷媒により直接冷却するこ
とができる。また、冷媒は回転子の回転に伴う遠心力に
より噴出されるから、冷媒を圧送する電動ポンプを省略
でき一層の小型軽量化を実現できる効果がある。According to the vehicle driving electric motor of the fifth aspect of the present invention, when the rotor rotates, the refrigerant flows toward the inside of the electric motor from the radial ejection holes communicating with the central shaft hole of the rotor. Gush out. Therefore, it is possible to directly cool the winding portion of the armature coil and the rotor that generate heat by energization with the refrigerant. Further, since the refrigerant is ejected by the centrifugal force that accompanies the rotation of the rotor, there is an effect that an electric pump that pressure-feeds the refrigerant can be omitted and further reduction in size and weight can be realized.
【００１４】[0014]
【実施例】本発明の実施例を図面を参照して説明する。
図１は本発明に係る車両駆動用電動機１の縦断面図であ
る。図２は図１におけるＡ−Ａ線断面図、図３は同Ｂ−
Ｂ線断面図（但し、左右の構成が同一であるため左側の
構成部分の符号を括弧内に記す）である。電動機はブラ
シ等のように回転体と接触する機構を有しないかご形誘
導電動機を用いるのが好ましい。このため、本実施例は
電動機としてかご形誘導電動機（以下単に誘導電動機と
いう）を用いた態様で説明する。図１において、円筒状
のハウジング２の外周にはフランジ状の放熱フィン２ａ
が多数連設されている。そして。その円筒状のハウジン
グ２の軸方向の中央には、中心孔３を形成して対向する
隔壁４ａ，４ｂを設けて区画するとともに、中央の隔壁
４ｃにより、インバータ装着室５とインバータ冷却室６
が形成され、該インバータ装着室５及びインバータ冷却
室６の下方にドレンタンク７が形成されている。油密に
構成されたインバータ装着室５には、樹脂ケース内に半
導体素子を封入するとともに、放熱金属板９を固定し
て、インバータ８を構成してなる複数個の半導体素子パ
ック１０が配置されている。インバータ８は直流電力を
交流電力に変換する。前記半導体素子パック１０の放熱
金属板９は、前記中央の隔壁４ｃに当接されている。Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a vertical sectional view of a vehicle driving electric motor 1 according to the present invention. 2 is a sectional view taken along the line AA in FIG. 1, and FIG.
It is a sectional view taken along the line B (however, since the left and right configurations are the same, the reference numerals of the components on the left side are shown in parentheses). As the electric motor, it is preferable to use a squirrel-cage induction motor that does not have a mechanism for contacting the rotating body such as a brush. Therefore, the present embodiment will be described in a mode in which a squirrel-cage induction motor (hereinafter simply referred to as an induction motor) is used as an electric motor. In FIG. 1, a flange-shaped heat radiation fin 2a is provided on the outer periphery of a cylindrical housing 2.
Are installed in a row. And. At the center of the cylindrical housing 2 in the axial direction, partition walls 4a and 4b are formed to face each other by forming a central hole 3, and the partition wall 4c at the center partitions the inverter mounting chamber 5 and the inverter cooling chamber 6.
And a drain tank 7 is formed below the inverter mounting chamber 5 and the inverter cooling chamber 6. In the oil-tight inverter mounting chamber 5, a plurality of semiconductor element packs 10 constituting the inverter 8 are arranged by enclosing a semiconductor element in a resin case and fixing a heat radiating metal plate 9. ing. The inverter 8 converts DC power into AC power. The heat dissipation metal plate 9 of the semiconductor element pack 10 is in contact with the central partition wall 4c.
【００１５】また、インバータ冷却室６は前記中央の隔
壁４ｃから軸方向に向かって同心円状に突出する放熱フ
ィン１１が多数形成されている。各放熱フィン１１に
は、図２に示すように不連続部１２が円周方向で数箇所
形成されている。さらに、このインバータ冷却室６は、
前記中心孔３に連通する冷媒流出孔１３と、前記ドレン
タンク７に連通する冷媒流入孔１４が形成されている。
該冷媒流入孔１４には、逆止弁１４ａが設けられてい
る。ドレンタンク７には、ハウジング２内に連通する連
通孔７ａ，７ｂが形成されている。また、ドレンタンク
７の下部外周にも放熱フィン７ｃが形成されている。In addition, the inverter cooling chamber 6 is provided with a large number of heat radiation fins 11 which are concentrically projected from the central partition wall 4c in the axial direction. As shown in FIG. 2, each radiating fin 11 has a discontinuous portion 12 formed in several places in the circumferential direction. Furthermore, this inverter cooling chamber 6
A coolant outflow hole 13 communicating with the center hole 3 and a coolant inflow hole 14 communicating with the drain tank 7 are formed.
The refrigerant inflow hole 14 is provided with a check valve 14a. The drain tank 7 is formed with communication holes 7 a and 7 b that communicate with the inside of the housing 2. Radiating fins 7c are also formed on the outer periphery of the lower portion of the drain tank 7.
【００１６】前記隔壁４ａ，４ｂ及び４ｃに形成された
中心孔３には、左右両側からオイルシール１５ａ，１５
ｂとベアリング１６ａ，１６ｂが嵌着されている。該ベ
アリング１６ａ，１６ｂと前記ハウジング２の左右両端
部を塞ぐエンドフレーム１７ａ，１７ｂに嵌着したベア
リング１８ａ，１８ｂにより、円筒状のハウジング２の
中心軸上で直列状に配置された回転子１９ａ，１９ｂの
回転子軸２０ａ，２０ｂが軸承されている 回転子軸２
０ａ，２０ｂは、前記中心孔３内に突出し、間隔を置い
て対向する軸端部から、それぞれ左右の軸端部に向かう
中心軸孔２１ａ，２１ｂが穿設されている。中心軸孔２
１ａ，２１ｂには、それぞれ回転子１９ａ，１９ｂの左
右両側で半径方向の開口２３ａ，２３ｂを所定角度間隔
で形成して、冷媒噴出ノズル２４ａ，２４ｂをねじ込ん
で固定する（図３参照）。ハウジング２の内周壁には、
前記回転子１９ａ，１９ｂに対向して固定子２５ａ，２
５ｂが配設され、誘導電動機２６ａ，２６ｂが構成され
ている。Oil seals 15a, 15 are provided on both sides of the center hole 3 formed in the partition walls 4a, 4b and 4c.
b and the bearings 16a and 16b are fitted. The bearings 16a, 16b and the bearings 18a, 18b fitted to the end frames 17a, 17b for closing the left and right ends of the housing 2 are arranged in series on the central axis of the cylindrical housing 2 to form a rotor 19a. The rotor shafts 20a and 20b of 19b are supported.
0a and 20b are provided with central shaft holes 21a and 21b which project into the central hole 3 and which respectively go from the shaft ends facing each other with a space to the left and right shaft ends. Central shaft hole 2
Radial openings 23a and 23b are formed on the left and right sides of the rotors 19a and 19b at predetermined angular intervals on the rotors 1a and 21b, respectively, and the refrigerant ejection nozzles 24a and 24b are screwed and fixed (see FIG. 3). On the inner peripheral wall of the housing 2,
The stators 25a, 2 are opposed to the rotors 19a, 19b.
5b is arranged, and the induction motors 26a and 26b are configured.
【００１７】前記エンドフレーム１７ａ，１７ｂの外側
には、ギヤボックス２７ａ，２７ｂが油密に固定されて
いる。該ギヤボックス２７ａ，２７ｂ内に突出する回転
子軸２０ａ，２０ｂの突出部には、歯車２８ａ，２８ｂ
が形成されている。また、ギヤボックス２７ａ，２７ｂ
には、大径の内歯歯車２９ａ，２９ｂが固定されてい
る。そして、回転アーム３０ａ，３０ｂに回転自在に支
持された遊星歯車３１ａ，３１ｂが、歯車２８ａ，２８
ｂと内歯歯車２９ａ，２９ｂに噛み合って、減速歯車機
構３２ａ，３２ｂを構成している。前記回転アーム３０
ａ，３０ｂの中心が、ギヤボックス２７ａ，２７ｂに嵌
着したベアリング３３ａ，３３ｂに回転自在に軸承され
る等速ボールジョイント３４ａ，３４ｂの動力伝達軸３
５ａ，３５ｂに締着されている。また、ギヤボックス２
７ａ，２７ｂと動力伝達軸３５ａ，３５ｂ間にはオイル
シール３６ａ，３６ｂを嵌着して、油密に封止する。Gearboxes 27a and 27b are oil-tightly fixed to the outside of the end frames 17a and 17b. Gears 28a and 28b are provided on the protruding portions of the rotor shafts 20a and 20b which project into the gear boxes 27a and 27b.
Are formed. Also, the gear boxes 27a and 27b
Large-diameter internal gears 29a and 29b are fixed to. Then, the planetary gears 31a and 31b rotatably supported by the rotating arms 30a and 30b are rotated by the gears 28a and 28b.
b and the internal gears 29a and 29b are meshed with each other to form reduction gear mechanisms 32a and 32b. The rotating arm 30
The power transmission shaft 3 of the constant velocity ball joints 34a and 34b, in which the centers of a and 30b are rotatably supported by bearings 33a and 33b fitted in the gear boxes 27a and 27b.
It is fastened to 5a and 35b. Also, the gear box 2
Oil seals 36a and 36b are fitted between the shafts 7a and 27b and the power transmission shafts 35a and 35b to seal them oil-tightly.
【００１８】上記した構成の車両駆動用電動機１は、ド
レンタンク７が下方になる図１に示した水平姿勢で車体
に装着される。そして、冷媒として用いる潤滑油を、ハ
ウジング２内と中心孔３、インバータ冷却室６内及び回
転子軸２０ａ，２０ｂに設けた中心軸孔２１ａ，２１ｂ
内に充填する。ハウジング２内の冷媒の液位は、回転子
１９ａ，１９ｂの外周面よりも低くなるように、充填量
を調節する。冷媒として潤滑油を用いるのは、水よりも
構成部品の腐食や電気的な短絡の可能性が少なく、ベア
リング１６ａ，１６ｂ、１８ａ，１８ｂ等の回動機構部
分の潤滑も可能になるからである。The vehicle driving electric motor 1 having the above-described structure is mounted on the vehicle body in the horizontal posture shown in FIG. 1 with the drain tank 7 facing downward. Lubricating oil used as a refrigerant is provided in the housing 2, the central hole 3, the inverter cooling chamber 6, and the central shaft holes 21a, 21b provided in the rotor shafts 20a, 20b.
Fill inside. The filling amount is adjusted so that the liquid level of the refrigerant in the housing 2 is lower than the outer peripheral surfaces of the rotors 19a and 19b. Lubricating oil is used as the refrigerant because it is less likely to cause corrosion or electrical short-circuiting of components than water, and it is possible to lubricate the rotating mechanism parts such as the bearings 16a, 16b, 18a, 18b. .
【００１９】上記車両駆動用電動機１の作動を説明す
る。インバータにより直流電力を交流電力に変換して、
誘導電動機２６ａ，２６ｂの固定子２５ａ，２５ｂに印
加すると、回転子１９ａ，１９ｂが回転する。回転速度
が高まるにつれて、遠心力が大きくなり潤滑油の粘性摩
擦を上回ると、中心軸孔２１ａ，２１ｂ内の潤滑油が冷
媒噴出ノズル２４ａ，２４ｂから固定子２５ａ，２５ｂ
に向かって噴出する。この回転する回転子１９ａ，１９
ｂのポンプ作用により、冷媒たる潤滑油は、インバータ
冷却室６→冷媒流出孔１３→中心孔３→中心軸孔２１
ａ，２１ｂ→冷媒噴出ノズル２４ａ，２４ｂ→ハウジン
グ２→連通孔７ａ，７ｂ→ドレンタンク７→冷媒流入孔
１４→逆止弁１４ａと連なる冷媒循環経路Ｒを循環し
て、インバータ冷却室６に戻る。The operation of the vehicle driving electric motor 1 will be described. Inverter converts DC power into AC power,
When applied to the stators 25a and 25b of the induction motors 26a and 26b, the rotors 19a and 19b rotate. When the centrifugal force increases as the rotational speed increases and exceeds the viscous friction of the lubricating oil, the lubricating oil in the central shaft holes 21a, 21b is discharged from the refrigerant jet nozzles 24a, 24b to the stators 25a, 25b.
Gush toward. This rotating rotor 19a, 19
Due to the pumping action of b, the lubricating oil, which is a refrigerant, is changed from the inverter cooling chamber 6 to the refrigerant outflow hole 13 to the central hole 3 to the central shaft hole 21.
a, 21b → refrigerant ejection nozzles 24a, 24b → housing 2 → communication holes 7a, 7b → drain tank 7 → refrigerant inflow hole 14 → returns to the inverter cooling chamber 6 through a refrigerant circulation path R connected to the check valve 14a. .
【００２０】インバータ冷却室６を通過する潤滑油は、
放熱金属板９から放熱フィン１１に伝わるインバータ８
の発熱を吸収して冷却する。そして、中心軸孔２１ａ，
２１ｂ内を移動する潤滑油により、回転子１９ａ，１９
ｂが冷却される。冷媒噴出ノズル２４ａ，２４ｂから噴
出された潤滑油は霧状となり、ハウジング２の内気にふ
れて急激に冷却され、ハウジング２を冷却するとともに
固定子２５ａ，２５ｂを冷却する。また、車両の走行に
伴う強い風をハウジング２の下部に当てることにより、
固定子２５ａ，２５ｂの熱及びハウジング２の下部に溜
まったり、ドレンタンク７に流入した潤滑油が吸収した
熱が放熱フィン２ａ及び７ｃから放出される。この放出
により冷却された潤滑油がインバータ冷却室６内に流入
する。The lubricating oil passing through the inverter cooling chamber 6 is
Inverter 8 transmitted from the heat dissipation metal plate 9 to the heat dissipation fin 11.
It absorbs the heat of and cools. Then, the central shaft hole 21a,
21b causes the lubricating oil to move, so that the rotors 19a, 19b
b is cooled. The lubricating oil ejected from the refrigerant ejection nozzles 24a, 24b becomes a mist and is rapidly cooled by touching the inside air of the housing 2, cooling the housing 2 and the stators 25a, 25b. In addition, by applying strong wind to the lower portion of the housing 2 as the vehicle travels,
The heat of the stators 25a and 25b and the heat accumulated in the lower portion of the housing 2 and absorbed by the lubricating oil flowing into the drain tank 7 are released from the heat radiation fins 2a and 7c. The lubricating oil cooled by this discharge flows into the inverter cooling chamber 6.
【００２１】上記したように、空冷により十分冷却され
た潤滑油がインバータ冷却室６に流入して、先ずインバ
ータ８を冷却し続いて回転子１９ａ，１９ｂを冷却する
もので、インバータ８を構成する半導体素子の昇温によ
り特性の変化や熱破壊を防止できる。また、冷媒噴出ノ
ズル２４ａ，２４ｂを傾けて斜め方向へ冷媒を噴出させ
ることもできる。冷媒噴出ノズル２４ａ，２４ｂに、ボ
ール弁を設けて冷媒の噴出圧を調節することもできる。
さらに、電動ポンプにより冷媒を圧送して、上記冷媒循
環経路Ｒを循環させるようにしてもよい。As described above, the lubricating oil sufficiently cooled by air cooling flows into the inverter cooling chamber 6 to cool the inverter 8 first and then the rotors 19a and 19b, thus constituting the inverter 8. It is possible to prevent changes in characteristics and thermal destruction due to the temperature rise of the semiconductor element. Also, the refrigerant ejection nozzles 24a and 24b can be inclined to eject the refrigerant in an oblique direction. Ball valves may be provided on the refrigerant ejection nozzles 24a and 24b to adjust the ejection pressure of the refrigerant.
Further, the refrigerant may be pumped by an electric pump to circulate in the refrigerant circulation path R.
【００２２】図４は、上記構成の車両駆動用電動機１を
搭載した電気自動車の概略平面図である。インバータ
８、誘導電動機２６ａ，２６ｂ及びこれらの冷却手段を
一体に組み込んだことにより、凹凸の少ない外観形状に
纏めて小型軽量化できるとともに、搭載に必要な容積も
少なくてすみ、電気自動車の車室や積載区画を拡大でき
る。FIG. 4 is a schematic plan view of an electric vehicle equipped with the vehicle driving electric motor 1 having the above-described structure. By integrally incorporating the inverter 8, the induction motors 26a and 26b, and their cooling means, it is possible to reduce the size and weight of the exterior shape with less unevenness and to reduce the volume required for mounting. And the loading area can be expanded.
【図１】本発明に係る車両駆動用電動機の縦断断面図で
ある。FIG. 1 is a vertical sectional view of a vehicle driving electric motor according to the present invention.
【図２】図１におけるＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA in FIG.
【図３】図１におけるＢ−Ｂ線断面図である。3 is a sectional view taken along line BB in FIG.
【図４】車両駆動用電動機を搭載した電気自動車の概略
平面図である。FIG. 4 is a schematic plan view of an electric vehicle equipped with a vehicle driving electric motor.
【図５】従来例の電気自動車の概略平面図である。FIG. 5 is a schematic plan view of a conventional electric vehicle.
１ 車両駆動用電動機 ２ ハウジング ６ インバータ冷却室 ８ インバータ １０ 半導体素子パック １６ａ，１６ｂ、１８ａ，１８ｂ ベアリング １９ａ，１９ｂ 回転子 ２０ａ，２０ｂ 回転子軸 ２１ａ，２１ｂ 中心軸孔 ２３ｑ，２３ｂ 開口 ２４ａ，２４ｂ 冷媒噴出ノズル ２６ａ，２６ｂ 誘導電動機 Ｒ 冷媒循環経路 1 Vehicle Driving Motor 2 Housing 6 Inverter Cooling Chamber 8 Inverter 10 Semiconductor Element Pack 16a, 16b, 18a, 18b Bearing 19a, 19b Rotor 20a, 20b Rotor Shaft 21a, 21b Central Shaft Hole 23q, 23b Opening 24a, 24b Refrigerant Jet nozzles 26a, 26b Induction motor R Refrigerant circulation path
Claims (5)
タと、該インバータから供給される交流電力により回転
する電動機を一体に組み込むとともに、冷却手段の冷媒
を循環させる冷媒循環経路を前記インバータと前記電動
機との間に形成したことを特徴とする車両駆動用電動
機。1. An inverter for converting DC power into AC power and an electric motor that is rotated by AC power supplied from the inverter are integrally incorporated, and a refrigerant circulation path for circulating a refrigerant of a cooling means is provided for the inverter and the electric motor. An electric motor for driving a vehicle, which is formed between the electric motor and the electric motor.
循環経路に、前記電動機を配設したことを特徴とする請
求項１記載の車両駆動用電動機。2. The electric motor for driving a vehicle according to claim 1, wherein the electric motor is arranged in the refrigerant circulation path downstream of the inverter.
列状に配置し、前記電動機間に前記インバータを配置し
て一体化したことを特徴とする請求項１又は請求項２記
載の車両駆動用電動機。3. The electric motor according to claim 1, wherein the two electric motors are arranged in series along a rotor shaft, and the inverter is arranged between the electric motors to integrate them. Electric motor for vehicle drive.
油を用い、前記電動機の回動機構部分を潤滑することを
特徴とする請求項１乃至請求項３記載の車両駆動用電動
機。4. The electric motor for driving a vehicle according to claim 1, wherein lubricating oil is used as a refrigerant circulating in the refrigerant circulation path to lubricate a rotation mechanism portion of the electric motor.
孔と該中心軸孔に連通する半径方向の噴出孔を形成し、
前記冷媒循環経路から電動機に供給される冷媒を前記回
転子軸の回転に伴う遠心力により、前記電動機内部に噴
出させることを特徴とする請求項１乃至請求項４記載の
車両駆動用電動機。5. A central shaft hole and a radial ejection hole communicating with the central shaft hole are formed in the rotor shaft of the electric motor,
5. The vehicle drive electric motor according to claim 1, wherein the refrigerant supplied from the refrigerant circulation path to the electric motor is ejected into the electric motor by a centrifugal force generated by the rotation of the rotor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09808394A JP3508202B2 (en) | 1994-04-11 | 1994-04-11 | Motor for driving vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09808394A JP3508202B2 (en) | 1994-04-11 | 1994-04-11 | Motor for driving vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07288950A true JPH07288950A (en) | 1995-10-31 |
| JP3508202B2 JP3508202B2 (en) | 2004-03-22 |
Family
ID=14210457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09808394A Expired - Fee Related JP3508202B2 (en) | 1994-04-11 | 1994-04-11 | Motor for driving vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3508202B2 (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1014011A (en) * | 1996-04-26 | 1998-01-16 | Denso Corp | Driver for vehicle |
| JP2002250431A (en) * | 2000-12-18 | 2002-09-06 | General Motors Corp <Gm> | Lubricating/cooling system for power receiving/delivery unit in electromechanical vehicular transmission |
| JP2003047202A (en) * | 2001-07-31 | 2003-02-14 | Honda Motor Co Ltd | Cooling device for vehicle |
| JP2003299317A (en) * | 2002-04-03 | 2003-10-17 | Toyota Motor Corp | Rotating means for driving vehicle |
| JP2003339102A (en) * | 2002-05-17 | 2003-11-28 | Toyota Motor Corp | Drive unit for vehicle, and electric power conversion unit |
| JP2004112855A (en) * | 2002-09-13 | 2004-04-08 | Nissan Motor Co Ltd | Controller for vehicle |
| US6992409B2 (en) | 2002-03-15 | 2006-01-31 | Denso Corporation | Liquid-cooled rotary electric machine integrated with an inverter |
| JP2006288141A (en) * | 2005-04-04 | 2006-10-19 | Toyota Motor Corp | Driving device, vehicle loading the same and controlling method thereof |
| DE112008001269T5 (en) | 2007-05-25 | 2010-04-29 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | drive mechanism |
| WO2012133164A1 (en) * | 2011-03-28 | 2012-10-04 | 株式会社ＳＩＭ－Ｄｒｉｖｅ | In-vehicle motor unit |
| JP2013062926A (en) * | 2011-09-13 | 2013-04-04 | Toyota Motor Corp | Rotary electric machine |
| JP2013150472A (en) * | 2012-01-20 | 2013-08-01 | Ntn Corp | Connection structure of vehicle motor and inverter |
| JP2013162685A (en) * | 2012-02-07 | 2013-08-19 | Ntn Corp | Drive unit of electric vehicle |
| JP2015506661A (en) * | 2012-01-24 | 2015-03-02 | アー・ファウ・エル・リスト・ゲー・エム・ベー・ハーＡｖｌ Ｌｉｓｔｇｍｂｈ | Electric drive |
| CN105322699A (en) * | 2015-11-16 | 2016-02-10 | 陕西航空电气有限责任公司 | Motor shell and double-communicated-cavity high voltage direct current oil cooling motor provided with motor shell |
| JP2017184341A (en) * | 2016-03-28 | 2017-10-05 | 本田技研工業株式会社 | Electric motor unit |
| JP2020058149A (en) * | 2018-10-02 | 2020-04-09 | 本田技研工業株式会社 | Electric device |
-
1994
- 1994-04-11 JP JP09808394A patent/JP3508202B2/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1014011A (en) * | 1996-04-26 | 1998-01-16 | Denso Corp | Driver for vehicle |
| JP2002250431A (en) * | 2000-12-18 | 2002-09-06 | General Motors Corp <Gm> | Lubricating/cooling system for power receiving/delivery unit in electromechanical vehicular transmission |
| JP4625597B2 (en) * | 2001-07-31 | 2011-02-02 | 本田技研工業株式会社 | Vehicle cooling system |
| JP2003047202A (en) * | 2001-07-31 | 2003-02-14 | Honda Motor Co Ltd | Cooling device for vehicle |
| US6992409B2 (en) | 2002-03-15 | 2006-01-31 | Denso Corporation | Liquid-cooled rotary electric machine integrated with an inverter |
| JP2003299317A (en) * | 2002-04-03 | 2003-10-17 | Toyota Motor Corp | Rotating means for driving vehicle |
| JP2003339102A (en) * | 2002-05-17 | 2003-11-28 | Toyota Motor Corp | Drive unit for vehicle, and electric power conversion unit |
| JP2004112855A (en) * | 2002-09-13 | 2004-04-08 | Nissan Motor Co Ltd | Controller for vehicle |
| JP4614811B2 (en) * | 2005-04-04 | 2011-01-19 | トヨタ自動車株式会社 | Drive device, automobile equipped with the same, and drive device control method |
| JP2006288141A (en) * | 2005-04-04 | 2006-10-19 | Toyota Motor Corp | Driving device, vehicle loading the same and controlling method thereof |
| DE112008001269T5 (en) | 2007-05-25 | 2010-04-29 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | drive mechanism |
| US8018103B2 (en) | 2007-05-25 | 2011-09-13 | Toyota Jidosha Kabushiki Kaisha | Driving mechanism |
| WO2012133164A1 (en) * | 2011-03-28 | 2012-10-04 | 株式会社ＳＩＭ－Ｄｒｉｖｅ | In-vehicle motor unit |
| JP2012205483A (en) * | 2011-03-28 | 2012-10-22 | Sim-Drive Co Ltd | In-car motor unit |
| JP2013062926A (en) * | 2011-09-13 | 2013-04-04 | Toyota Motor Corp | Rotary electric machine |
| JP2013150472A (en) * | 2012-01-20 | 2013-08-01 | Ntn Corp | Connection structure of vehicle motor and inverter |
| JP2015506661A (en) * | 2012-01-24 | 2015-03-02 | アー・ファウ・エル・リスト・ゲー・エム・ベー・ハーＡｖｌ Ｌｉｓｔｇｍｂｈ | Electric drive |
| JP2013162685A (en) * | 2012-02-07 | 2013-08-19 | Ntn Corp | Drive unit of electric vehicle |
| CN105322699A (en) * | 2015-11-16 | 2016-02-10 | 陕西航空电气有限责任公司 | Motor shell and double-communicated-cavity high voltage direct current oil cooling motor provided with motor shell |
| JP2017184341A (en) * | 2016-03-28 | 2017-10-05 | 本田技研工業株式会社 | Electric motor unit |
| JP2020058149A (en) * | 2018-10-02 | 2020-04-09 | 本田技研工業株式会社 | Electric device |
| US11208009B2 (en) | 2018-10-02 | 2021-12-28 | Honda Motor Co., Ltd. | Electrical apparatus |
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