WO2024004167A1 - 回転電機の固定子 - Google Patents
回転電機の固定子 Download PDFInfo
- Publication number
- WO2024004167A1 WO2024004167A1 PCT/JP2022/026367 JP2022026367W WO2024004167A1 WO 2024004167 A1 WO2024004167 A1 WO 2024004167A1 JP 2022026367 W JP2022026367 W JP 2022026367W WO 2024004167 A1 WO2024004167 A1 WO 2024004167A1
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- WO
- WIPO (PCT)
- Prior art keywords
- stator
- biasing
- conductor
- temperature sensor
- slot
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
-
- 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
Definitions
- the present invention relates to a stator for a rotating electrical machine.
- Patent Document 1 describes a stator core, a stator winding attached to the stator core, a temperature sensor, and coil ends that are portions of the stator winding that protrude from both ends of the stator core.
- a temperature sensor holder that clamps the stator winding portion and the temperature sensor; the temperature sensor holder is deformable in a direction other than the clamping direction; child is disclosed.
- a stator for a rotating electric machine includes an annular stator core having slots, a slot conductor disposed within the slot, and a coil disposed outside the slot and connected to the slot conductor.
- a stator for a rotating electrical machine comprising an end conductor, a temperature sensor attached to the coil end conductor, and a mounting member fixing the temperature sensor to the coil end conductor, the mounting member being configured to a base forming a mounting area in which a detector is arranged; a first biasing portion biasing the temperature sensor toward the base; and a first biasing portion connecting one end of the base and the first biasing portion.
- the device includes a connecting portion, a second urging portion that urges the coil end conductor toward the base, and a second connecting portion that connects the other end of the base and the second urging portion.
- FIG. 1 is an external view of the stator 1.
- the stator 1 constitutes a rotating electric machine together with a rotor (not shown).
- the stator 1 includes an annular stator core 3 having slots 2, a slot conductor 4 disposed inside the slot 2, a coil end conductor 5A, and an indirect connection between the coil end conductors 5A and the slot conductor 4.
- a bus bar 5B, a temperature detector 6, and a mounting member 7 are provided. However, in FIG. 1, the temperature sensor 6 and the mounting member 7 are shown almost integrally due to the scale.
- the coil end conductor 5A is arranged outside the slot 2 and directly connected to the slot conductor 4.
- Temperature detector 6 is attached to bus bar 5B and detects the temperature of bus bar 5B.
- the mounting member 7 fixes the temperature sensor 6 to the bus bar 5B.
- the temperature detector 6 may be attached to the coil end conductor 5A to detect the temperature of the coil end conductor 5A. Furthermore, the temperature detector 6 may be attached to a neutral wire that connects the coil end conductors 5A to detect the temperature of the neutral wire. Below, the coil end conductor 5A, bus bar 5B, and neutral wire are collectively referred to as a "connection conductor" 5.
- FIG. 2 is an enlarged view of the temperature sensor 6 and the mounting member 7.
- the temperature sensor 6 has, for example, a rectangular parallelepiped shape, and in FIG. 2, the longitudinal direction of the temperature sensor 6 is parallel to the Y axis. Furthermore, the temperature detector 6 has a signal line 61 extending in the positive direction of the Y-axis.
- the mounting member 7 has an S-shaped cross section in the XZ plane, and forms a first mounting area 7U in the positive direction of the Z-axis and a second mounting area 7D in the negative direction of the Z-axis in FIG. The temperature detector 6 is mounted in the first mounting area 7U, and the connection conductor 5 is mounted in the second mounting area 7D.
- FIG. 3 is a perspective view of the mounting member 7, and the orientation is the same as that in FIG. 2.
- FIG. 3 is a diagram from FIG. 2 with the connecting conductor 5 and temperature detector 6 removed.
- the mounting member 7 includes a base 71, a first biasing portion 72, a first connecting portion 73, a second biasing portion 74, a second connecting portion 75, a first convex portion 761, and a second convex portion 762. Equipped with.
- the base 71 forms a first mounting area 7U in which the temperature detector 6 is placed.
- the first biasing portion 72 biases the temperature detector 6 toward the base portion 71 side.
- the first connecting portion 73 connects one end of the base portion 71 and the first biasing portion 72 .
- the second biasing portion 74 biases the connecting conductor 5 toward the base portion 71 side.
- the second connecting portion 75 connects the other end of the base portion 71 and the second biasing portion 74 .
- the first convex portion 761 and the second convex portion 762 prevent the temperature sensor 6 from falling off. Below, the first convex portion 761 and the second convex portion 762 are also collectively referred to as the “convex portion” 76.
- FIG. 4 is a side view of the mounting member 7.
- the first biasing portion 72 includes a first biasing contact portion 721 , a first biasing convex portion 722 , a first biasing introduction portion 723 , and a first biasing non-contact portion 724 .
- the first biasing contact portion 721 is a portion of the first biasing portion 72 that contacts the temperature sensor 6 .
- the first biasing convex portion 722 is a portion of the first biasing portion 72 that is located on the X-axis plus side of the first biasing contact portion 721 and is located on the Z-axis negative side of the first biasing contact portion 721. It is.
- the first biasing introduction part 723 is located on the X-axis plus side relative to the first biasing contact part 721, and the position on the Z axis is equal to or higher than the first biasing contact part 721. It is a part of.
- the first biasing non-contact portion 724 is located on the negative side of the X-axis with respect to the first biasing contact portion 721 and is a portion of the first biasing portion 72 that does not contact the temperature sensor 6 .
- the space surrounded by the base portion 71, the first biasing portion 72, and the first connecting portion 73 is the first mounting area 7U.
- the first mounting area 7U is further surrounded by a first biasing convex part 722 at the upper part on the X-axis positive side, and a first convex part 761 and a second convex part 762 at the lower part on the X-axis positive side. It will be done.
- a space surrounded by the base portion 71, the second urging portion 74, and the second connecting portion 75 is the second mounting area 7D.
- the connecting conductor 5 is biased toward the Z-axis positive side by the second biasing portion 74 and comes into contact with the base 71 on the surface of the base 71 on the Z-axis negative side.
- the temperature sensor 6 is biased toward the negative side of the Z-axis by the first biasing section 72 .
- the temperature sensor 6 does not come into contact with the base 71 even on the surface of the base 71 on the Z-axis positive side, nor does it come into contact with the base 71 on the surface of the base 71 on the Z-axis negative side.
- the surface of the temperature sensor 6 on the Z-axis minus side is in contact with the surface of the connecting conductor 5 on the Z-axis plus side. That is, the connecting conductor 5 and the temperature sensor 6 are in direct contact.
- the force that maintains the contact between the connecting conductor 5 and the temperature sensor 6 is the elastic force of the first biasing portion 72 and the second biasing portion 74 .
- FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4, showing the temperature sensor 6 and the mounting member 7.
- the right side of the figure is the positive side of the X axis
- the upper side of the figure is the positive side of the Y axis
- the front side of the figure is the positive side of the Z axis.
- the base 71 is hollowed out at the center in the Y-axis direction, and the temperature sensor 6 is placed here.
- the temperature sensor 6 and the mounting member 7 do not overlap in the Z-axis direction. That is, the temperature sensor 6 is restrained from moving toward the plus side and the minus side of the Y axis by the base portion 71.
- a gap exists between the temperature sensor 6 and the two bases 71, but a gap may exist only on one side.
- first convex portion 761 and the second convex portion 762 are arranged on the positive side of the X-axis direction of the temperature detector 6, movement of the temperature sensor 6 toward the positive side of the X-axis direction is restricted. Note that in the cross section on the positive side of the Z-axis compared to the position shown in FIG. Movement is also restricted.
- FIG. 6 is a diagram showing the shape of the first biasing section 72.
- the broken line in FIG. 6 indicates the position of the surface of the base 71 on the Z-axis plus side.
- the length of each of the first biasing contact portion 721, the first biasing convex portion 722, the first biasing introducing portion 723, and the first biasing non-contact portion 724 and the surface of the base 71 on the Z-axis plus side Let h1, h2, h3, and h4 be h1, h2, h3, and h4. In this case, length h2 is shorter than length h1, length h3 is greater than or equal to length h1, and length h4 is longer than length h1.
- the temperature sensor 6 When attaching the temperature sensor 6 to the mounting member 7, the temperature sensor 6 is brought into contact with the first connection portion 73 located at the innermost part of the first mounting area 7U, that is, on the minus side of the X-axis, in order to ensure the attachment. It is desirable to push it in until it reaches the desired position. At this time, the temperature sensor 6 butts against the first connection part 73 and the entire mounting member 7 receives a force in the negative side of the X-axis, and this force presses the second connection part 75 against the connection conductor 5. Therefore, if the force is such that the mounting member 7 is not deformed or destroyed, fine adjustment of the force is unnecessary, and it can be said that the stator 1 has excellent assemblability.
- FIG. 7 the assembly of a comparative stator 1Z having a comparative mounting member 7Z will be described for comparison with the stator 1 in this embodiment.
- the connection conductor 5 and the temperature sensor 6 are inserted into the comparison mounting member 7Z from the same direction.
- the connecting conductor 5 and the temperature sensor 6 are inserted into the comparison mounting member 7Z from the negative side of the X axis to the positive side.
- the comparison attachment member 7Z is first attached to the connection conductor 5, and then the temperature sensor 6 is inserted into the comparison attachment member 7Z.
- the comparison mounting member 7Z may move toward the X-axis plus side and fall off from the connection conductor 5.
- the position of the end surface on the X-axis positive side of the comparative mounting member 7Z it is possible to prevent the problem of the previously inserted member not being easily inserted due to the later inserted member. It is undeniable that ease of assembly deteriorates due to the existence of matters to be considered.
- the stator 1 includes an annular stator core 3 having a slot 2, a slot conductor 4 disposed inside the slot 2, and a connecting conductor 5 disposed outside the slot 2 and connected to the slot conductor 4. , a temperature sensor 6 attached to the connection conductor 5, and a mounting member 7 for fixing the temperature sensor 6 to the connection conductor 5.
- the mounting member 7 includes a base 71 forming a first mounting area 7U in which the temperature sensor 6 is arranged, a first biasing portion 72 that biases the temperature sensor 6 toward the base 71, and a first biasing portion 72 that biases the temperature sensor 6 toward the base 71.
- a first connecting part 73 that connects the first biasing part 72, a second biasing part 74 that biases the connecting conductor 5 toward the base 71, and a second biasing part 74 that connects the other end of the base 71 and the second biasing part 74.
- a second connecting portion 75 is provided. Therefore, since the mounting direction of the mounting member 7 to the connecting conductor 5 and the mounting direction of the temperature sensor 6 to the mounting member 7 match, neither one will fall off even if you do not adjust the insertion force. , excellent in assembly.
- the center of the base 71 is hollowed out, so that the temperature sensor 6 and the connecting conductor 5 come into direct contact. Therefore, the accuracy of temperature measurement by the temperature detector 6 is improved.
- the second connecting portion 75 includes a convex portion 76 surrounding the first mounting area 7U. Therefore, the temperature sensor 6 is prevented from falling off.
- the first biasing portion 72 includes a first biasing convex portion 722 surrounding the first mounting area 7U. Therefore, the temperature sensor 6 is prevented from falling off.
- the first biasing portion 72 and the second biasing portion 74 are leaf springs. Therefore, since the mounting member 7 can be manufactured at low cost, the stator 1 including the mounting member 7 can also be manufactured at low cost.
- connection conductor 5 is a coil end conductor 5A directly connected to the slot conductor 4, or a bus bar 5B or a neutral wire further connected to the coil end conductor 5A. Therefore, the attachment member 7 may be connected to any of the coil end conductor 5A, the bus bar 5B, and the neutral wire.
- the center of the base 71 is hollowed out, and the temperature sensor 6 and the connecting conductor 5 are in direct contact with each other.
- the base 71 has a flat plate shape without a hollow, so that the temperature sensor 6 and the connecting conductor 5 do not need to be in direct contact with each other.
- the temperature detector 6 and the connection conductor 5 are arranged to face each other with the base 71 in between.
- the second connecting part 75 includes the convex part 76 surrounding the first mounting area 7U
- the first biasing part 72 includes the first biasing convex part 722 surrounding the first mounting area 7U.
- the first biasing portion 72 does not need to include at least one of the convex portion 76 and the first biasing convex portion 722.
- the first biasing section 72 and the second biasing section 74 were leaf springs. However, at least one of the first biasing section 72 and the second biasing section 74 may not be a leaf spring. In other words, the first biasing section 72 and the second biasing section 74 may include biasing means other than a leaf spring.
- FIG. 8 is a diagram showing the configuration of the first biasing section 72 in Modification 3.
- the first biasing section 72 is configured by a combination of a plurality of flat plates and a coil spring.
- the first biasing contact portion 721 includes a coil spring, and the first biasing portion 72 biases the temperature sensor 6 by the elastic force of the coil spring.
- the first biasing convex portion 722 may be a separately provided flat plate.
- the configuration of the functional blocks is merely an example.
- Several functional configurations shown as separate functional blocks may be integrated, or a configuration shown in one functional block diagram may be divided into two or more functions. Further, a configuration may be adopted in which some of the functions of each functional block are provided in other functional blocks.
- Stator 2 Slot 3: Stator core 4: Slot conductor 5: Coil end conductor 6: Temperature detector 7: Mounting member 7D: Second mounting area 7U: First mounting area 71: Base 72: First mounting area Force portion 721: First force contact portion 722: First force convex portion 723: First force introduction portion 724: First force non-contact portion 73: First connection portion 74: Second force portion 75: Second connection part 76 : Convex part 761 : First convex part 762 : Second convex part
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Abstract
Description
以下、図1~図7を参照して、回転電機の固定子の第1の実施の形態を説明する。
取付部材7を用いて接続導体5に温度検出器6を取り付ける、組立方法を説明する。なおここでは、重量が重い接続導体5は移動させないことを前提に組立方法を説明するが、接続導体5を移動させる組立方法を排除するものではない。たとえばまず、接続導体5に対して取付部材7をX軸のプラス側からマイナス側に移動させて、接続導体5を第2搭載領域7Dにはめ込む。次に、接続導体5と一体化した取付部材7に対して、温度検出器6をX軸のプラス側からマイナス側に移動させて第1搭載領域7Uにはめ込む。なおこの際に、第1凸部761および第2凸部762が温度検出器6の移動の妨げとならないように、温度検出器6の長手方向をY軸に対して傾ける。
図7を参照して、本実施の形態における固定子1との対比のために、比較取付部材7Zを有する比較固定子1Zの組み立てを説明する。比較取付部材7Zは、接続導体5および温度検出器6が同一方向から挿入される。図7に示す例では、比較取付部材7Zに対して接続導体5および温度検出器6がX軸マイナス側からプラス側に挿入される。この比較例では、後から挿入される部材により先に挿入されていた部材の挿入が甘くなる問題がある。一例を挙げて具体的に説明する。
(1)固定子1は、スロット2を有する環状の固定子鉄心3と、スロット2内に配置されるスロット導体4と、スロット2の外に配置されスロット導体4と接続される接続導体5と、接続導体5に取付けられる温度検出器6と、接続導体5に温度検出器6を固定する取付部材7と、を備える。取付部材7は、温度検出器6が配置される第1搭載領域7Uを形成する基部71と、温度検出器6を基部71側へ付勢する第1付勢部72と、基部の一端と第1付勢部72とを接続する第1接続部73と、接続導体5を基部71側へ付勢する第2付勢部74と、基部71の他端と第2付勢部74とを接続する第2接続部75と、を備える。そのため、接続導体5に対する取付部材7の取付方向と、取付部材7に対する温度検出器6の取付方向とが一致するので、挿入の力加減などを調整しなくてもどちらかが脱落することがなく、組立性に優れている。
上述した実施の形態では、基部71は中央がくり抜かれ、温度検出器6と接続導体5とが直接に接触した。しかし基部71はくり抜きのない平板状で、温度検出器6と接続導体5とが直接に接触しなくてもよい。この場合には、基部71を挟んで温度検出器6と接続導体5とが対向する配置となる。
上述した実施の形態では、第2接続部75は第1搭載領域7Uを囲む凸部76を備え、第1付勢部72は第1搭載領域7Uを囲む第1付勢凸部722を備えた。しかし第1付勢部72は、凸部76および第1付勢凸部722のうち少なくとも一方を備えなくてもよい。
上述した実施の形態では、第1付勢部72および第2付勢部74は板バネであった。しかし第1付勢部72および第2付勢部74の少なくとも一方は、板バネでなくてもよい。換言すると、第1付勢部72および第2付勢部74は、板バネ以外の付勢手段を備えてもよい。
2 :スロット
3 :固定子鉄心
4 :スロット導体
5 :コイルエンド導体
6 :温度検出器
7 :取付部材
7D :第2搭載領域
7U :第1搭載領域
71 :基部
72 :第1付勢部
721 :第1付勢接触部
722 :第1付勢凸部
723 :第1付勢導入部
724 :第1付勢非接触部
73 :第1接続部
74 :第2付勢部
75 :第2接続部
76 :凸部
761 :第1凸部
762 :第2凸部
Claims (7)
- スロットを有する環状の固定子鉄心と、前記スロット内に配置されるスロット導体と、前記スロット外に配置され前記スロット導体と接続される接続導体と、前記接続導体に取付けられる温度検出器と、前記接続導体に前記温度検出器を固定する取付部材と、を備える回転電機の固定子であって、
前記取付部材は、
前記温度検出器が配置される搭載領域を形成する基部と、
前記温度検出器を前記基部側へ付勢する第1付勢部と、
前記基部の一端と前記第1付勢部とを接続する第1接続部と、
前記接続導体を前記基部側へ付勢する第2付勢部と、
前記基部の他端と前記第2付勢部とを接続する第2接続部と、
を備える回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記基部はくり抜かれており、
前記温度検出器と前記接続導体とが直接接触する、回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記第2接続部は、前記搭載領域を囲む凸部をさらに備える、回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記第1付勢部は、前記搭載領域を囲む凸部をさらに備える、回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記第1付勢部および前記第2付勢部は板バネである、回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記接続導体は、前記スロット導体と直接に接続されるコイルエンド導体である、回転電機の固定子。 - 請求項1に記載の回転電機の固定子であって、
前記接続導体は、前記スロット導体と直接に接続されるコイルエンド導体にさらに接続されるバスバーまたは中性線である、回転電機の固定子。
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JP2024530229A JPWO2024004167A1 (ja) | 2022-06-30 | 2022-06-30 | |
CN202280093910.1A CN118901189A (zh) | 2022-06-30 | 2022-06-30 | 旋转电机的定子 |
US18/848,960 US20250211068A1 (en) | 2022-06-30 | 2022-06-30 | Stator of Rotary Electric Machine |
PCT/JP2022/026367 WO2024004167A1 (ja) | 2022-06-30 | 2022-06-30 | 回転電機の固定子 |
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PCT/JP2022/026367 WO2024004167A1 (ja) | 2022-06-30 | 2022-06-30 | 回転電機の固定子 |
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JP (1) | JPWO2024004167A1 (ja) |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09324969A (ja) * | 1996-06-06 | 1997-12-16 | Matsushita Refrig Co Ltd | 冷凍または冷蔵装置の温度検知器の取付装置 |
WO2019087568A1 (ja) * | 2017-11-02 | 2019-05-09 | 日立オートモティブシステムズ株式会社 | 回転電機の固定子、及び、回転電機 |
WO2020026394A1 (ja) * | 2018-08-02 | 2020-02-06 | 株式会社芝浦電子 | 温度検知装置および組付体 |
-
2022
- 2022-06-30 CN CN202280093910.1A patent/CN118901189A/zh active Pending
- 2022-06-30 US US18/848,960 patent/US20250211068A1/en active Pending
- 2022-06-30 JP JP2024530229A patent/JPWO2024004167A1/ja active Pending
- 2022-06-30 WO PCT/JP2022/026367 patent/WO2024004167A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09324969A (ja) * | 1996-06-06 | 1997-12-16 | Matsushita Refrig Co Ltd | 冷凍または冷蔵装置の温度検知器の取付装置 |
WO2019087568A1 (ja) * | 2017-11-02 | 2019-05-09 | 日立オートモティブシステムズ株式会社 | 回転電機の固定子、及び、回転電機 |
WO2020026394A1 (ja) * | 2018-08-02 | 2020-02-06 | 株式会社芝浦電子 | 温度検知装置および組付体 |
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CN118901189A (zh) | 2024-11-05 |
JPWO2024004167A1 (ja) | 2024-01-04 |
US20250211068A1 (en) | 2025-06-26 |
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