CN209642417U - Stator and rotating electric machine - Google Patents

Abstract

The stator and rotating electric machine of the utility model inhibit the residence time of refrigerant to reduce.Stator (14) includes the stator core (21) for being formed with multiple slots (25), multiple coils (22) of the multiple slots (25) of insert and conductive terminal component (31), neutral conductive component (32) and connection conductive member (33) connected in the outside of slot (25) with coil (22).On conductive terminal component (31), neutral conductive component (32) and connection conductive member (33) respective surface, equipped with the recess portion (41) or guide portion for being detained refrigerant (F).Rotating electric machine includes the refrigerant supply unit (15) of the rotor of stator (14), configuration on the inside of stator (14) and each supply refrigerant (F) at least towards conductive terminal component (31), neutral conductive component (32) and connection conductive member (33).The utility model is able to extend the residence time of the refrigerant in conductive member, to improve the cooling performance of refrigerant.

Description

Stator and rotating electric machine

Technical field

The utility model relates to a kind of stator (stator) and rotating electric machines.

Background technique

Conventionally, there is known a kind of cooling device, matches from the coil-end (coil end) of the stator relative to motor Set and release cooling oil towards coil-end in the peripheral side in diameter direction and each cyclic annular oil pipe of inner circumferential side, with to coil and motor into Row is cooling (referring for example to patent document 1).

[existing technical literature]

[patent document]

Patent document 1: Japanese Patent Laid-Open 2007-312569 bulletin

Utility model content

[utility model problem to be solved]

However, the cooling oil for being supplied to coil-end can be on the surface of coil in the cooling device of the conventional art On due to gravity towards wandering below vertical direction, therefore the residence time of the cooling oil of coil-end is easy the viscosity according to cooling oil And change.As a result, in the case where the temperature with cooling oil rises and viscosity declines, the residence time of the cooling oil of coil-end It is possible that becoming too short and being difficult to ensure desired cooling performance.

The utility model is completed in view of the situation, is able to suppress the stagnant of refrigerant its purpose is to provide a kind of Stay the stator and rotating electric machine of time reduction.

[technical means to solve problem]

Reach this purpose in order to solve described problem, the utility model uses mode below.

(1) stator (such as stator 14 in embodiment) of a mode of the utility model includes being formed with multiple slots The stator core (such as stator core 21 in embodiment) of (such as slot 25 in embodiment) inserts the multiple slot Multiple conductive members coil (such as coil 22 in embodiment) and connected in the outside of the slot with the coil (such as conductive terminal component 31, neutral conductive component 32 and connection conductive member 33 in embodiment), the conduction structure Part has delay component (such as the recess portion 41 in embodiment for being detained refrigerant (such as refrigerant F in embodiment) Or guide portion 42).

(2) in the stator described in (1), the delay component can also be prominent from the surface of the conductive member Guide portion (such as guide portion 42 in embodiment).

(3) in the stator described in (1), the delay component can also be to be located on the surface of the conductive member Recess portion (such as recess portion 41 in embodiment).

(4) in the stator described in any one of described (1) to (3), the conductive member is also connected to the multiple The connecting end of the neutral point (such as the 2nd interconnecting piece 28e in embodiment) of coil or the coil is (such as in embodiment 2nd interconnecting piece 27e).

(5) rotating electric machine of a mode of the utility model includes stator (example described in any one of described (1) to (4) Such as the stator 14 in embodiment), rotor (such as rotor 13 in embodiment), Yi Jizhi of the configuration on the inside of the stator Few refrigerant supply part (such as refrigerant supply unit in embodiment that the refrigerant is supplied towards the conductive member 15)。

[effect of utility model]

According to (1), it is detained refrigerant due to being detained component, is able to extend the refrigerant in conductive member Residence time, so as to improve the cooling performance of refrigerant.

In the case where (2), guide portion inhibits refrigerant to wander from the surface of conductive member, therefore is able to extend The residence time of refrigerant in conductive member, so as to improve the cooling performance of refrigerant.

In the case where (3), recess portion inhibits refrigerant to wander from the surface of conductive member, therefore is able to extend and leads The residence time of refrigerant in electric components, so as to improve the cooling performance of refrigerant.

In the case where (4), the cooling performance to conductive member can be improved in the neutral point for connecting multiple coils, Cool down multiple coils well so as to efficiency.Moreover, the cooling to conductive member can be improved in the connecting end of each coil Performance cools down each coil so as to efficiency well.

According to (5), refrigerant supply part being capable of the efficiency conductive member supply to having delay component well Refrigerant, so as to improve the cooling performance of refrigerant.

Detailed description of the invention

Fig. 1 is the sectional view for schematically showing the structure of rotating electric machine of the embodiments of the present invention.

Fig. 2 is cuing open for a part of structure amplification expression of the stator in the rotating electric machine by the embodiments of the present invention Face figure.

Fig. 3 is the segmentation coil (segment of the stator in the rotating electric machine for indicate the embodiments of the present invention Coil perspective view).

Fig. 4 is the figure of the connection example of multiple segmentation coils in the rotating electric machine for indicate the embodiments of the present invention.

Fig. 5 is the perspective view of the superstructure of the stator in the rotating electric machine for indicate the embodiments of the present invention.

Fig. 6 is the vertical of the structural example of the neutral conductive component in the rotating electric machine for indicate the embodiments of the present invention Body figure.

Fig. 7 is the neutral conductive component in the rotating electric machine for the 1st variation for indicating the embodiments of the present invention Structural example perspective view.

Fig. 8 is the neutral conductive component in the rotating electric machine for the 2nd variation for indicating the embodiments of the present invention Structural example perspective view.

[explanation of symbol]

10: rotating electric machine

11: shell

12: axis

13: rotor

14: stator

15: refrigerant supply unit (refrigerant supply part)

21: stator core

22: coil

22a: the 1 coil-end

22b: the 2 coil-end

23: magnetic yoke portion

24: teeth portion

25: slot

26: segmentation coil

27: the 1 milliken conductors

27e: the 2 interconnecting piece (connecting end)

28: the 2 milliken conductors

28e: the 2 interconnecting piece (neutral point)

31: conductive terminal component

32: neutral conductive component

33: connection conductive member

41: recess portion (is detained component)

42: guide portion (is detained component)

F: refrigerant

Specific embodiment

Hereinafter, illustrating an embodiment of the rotating electric machine of the utility model on one side referring to attached drawing on one side.

The rotating electric machine of present embodiment is for example equipped in the vehicles such as electric vehicle.Electric vehicle be electric car, Hybrid power (hybrid) vehicle and fuel-cell vehicle etc..Electric car is driven using battery (battery) as power source It is dynamic.Hybrid vehicle is driven using battery and internal combustion engine as power source.Fuel-cell vehicle be using fuel cell as Power source drives.Rotating electric machine generates rotary driving force by the electric power supplied from battery in driving.Rotating electric machine exists Regenerated electric power is generated by being input to the rotary driving force of rotary shaft when power generation.

Fig. 1 is the sectional view for schematically showing the structure of rotating electric machine 10 of the embodiments of the present invention.

As shown in Figure 1, rotating electric machine 10 includes shell (case) 11, axis (shaft) 12, rotor 13, stator 14 and refrigeration Agent supply unit 15.For example, rotating electric machine 10 is internal rotor (inner rotor) type, it is the brushless (brush of three-phase alternating current Less) direct current (Direct Current, DC) motor.Three-phase is U phase, V phase and W phase.

Shell 11 be pivotably supported axis 12 around the axis of central axis C, and inside contain rotor 13, stator 14 and Refrigerant supply unit 15.

Axis 12 is installed in rotor 13 in the inside of shell 11, and in the external connection of shell 11 in other equipment.

Rotor 13 includes being fixed on the rotor core (rotor core) of axis 12 and being installed on the exciting multiple of rotor core Permanent magnet.

Fig. 2 is that a part of structure amplification of the stator 14 in the rotating electric machine 10 by the embodiments of the present invention indicates Sectional view.

As shown in Fig. 2, stator 14 includes stator core 21 and multiple coils 22.

Stator core 21 is, for example, to be formed by the multi-disc electromagnetic steel plate along the axis direction stacking parallel with central axis C. Stator core 21 includes the portion magnetic yoke (yoke) 23 and portion multiple teeth (teeth) 24 being integrally formed.The shape in magnetic yoke portion 23 is Be formed as circular.Multiple teeth portion 24 are to separate being positioned against for specified interval in the circumferential direction from the inner peripheral surface in magnetic yoke portion 23 Diameter side protrudes inwardly.In the circumferential direction between adjacent each two teeth portion 24, it is formed with the slot 25 inserted for coil 22.Slot 25 It is so-called open slot (open slot), axially runs through stator core 21, and towards diameter direction inside.

Multiple coils 22 for example including be connected in parallel in each phase of three-phase two coils 22 (such as in U phase the 1st and 2nd coil 22 etc.).Each coil 22 has multiple segmentation coils 26 of series connection.

Fig. 3 is the solid of the segmentation coil 26 of the stator 14 in the rotating electric machine 10 for indicate the embodiments of the present invention Figure.

As shown in figure 3, respectively segmentation coil 26 includes that each two the 1st milliken conductors 27 and the 2nd segmentation being alternately laminated is led Body 28.1st milliken conductor 27 and the respective shape of the 2nd milliken conductor 28 be created as U-shaped substantially identical to each other, with The both ends of U-shaped are towards the curved curved shape in mutually different direction.

1st milliken conductor 27 includes: 1st insertion section 27a and 2nd insertion section 27b, is inserted into mutually different 1st and the 2nd slot In 25；Transition part 27c connects respective 1st end 1st insertion section 27a and 2nd insertion section 27b；And the 1st interconnecting piece 27d and 2nd interconnecting piece 27e extends from respective 2nd end 1st insertion section 27a and 2nd insertion section 27b in mode closer to each other.

2nd milliken conductor 28 includes: 1st insertion section 28a and 2nd insertion section 28b, is inserted into mutually different 1st and the 2nd slot In 25；Transition part 28c connects respective 1st end 1st insertion section 28a and 2nd insertion section 28b；And the 1st interconnecting piece 28d and 2nd interconnecting piece 28e extends in a manner of away from each other from respective 2nd end 1st insertion section 28a and 2nd insertion section 28b.

The 1st insertion section 27a and 2nd insertion section 27b of 1st milliken conductor 27 and the shape of transition part 27c and the 2nd segmentation The 1st insertion section 28a and 2nd insertion section 28b of conductor 28 and the shape of transition part 28c are created as same shape.1st The shape of the 1st interconnecting piece 27d and the 2nd interconnecting piece 27e of milliken conductor 27, with the 1st interconnecting piece 28d of the 2nd milliken conductor 28 and The shape of 2nd interconnecting piece 28e is created as mutually different shape.

The multiple segmentation coils 26 for constituting a coil 22 are to clip by each segmentation coil 26 and in the circumferential direction regulation Several (such as five) slots 25 and configure other segmentation coils 26 connect, to be connected in series.

Fig. 4 is the connection example of multiple segmentation coils 26 in the rotating electric machine 10 for indicate the embodiments of the present invention Figure.

As shown in figure 4, for example, relative to the 1st segmentation coil 26a and in the circumferential direction two sides separate the several slots 25 of regulation And in the case where the 2nd segmentation coil 26b and the 3rd segmentation coil 26c configured, the 1st milliken conductor 27 of the 1st segmentation coil 26a The 1st interconnecting piece 27d be connected to the 2nd segmentation coil 26b the 2nd milliken conductor 28 the 1st interconnecting piece 28d.1st segmentation coil 2nd interconnecting piece 27e of the 1st milliken conductor 27 of 26a is connected to the 2nd connection of the 2nd milliken conductor 28 of the 3rd segmentation coil 26c Portion 28e.1st interconnecting piece 28d of the 2nd milliken conductor 28 of the 1st segmentation coil 26a is connected to the 1st point of the 3rd segmentation coil 26c Cut the 1st interconnecting piece 27d of conductor 27.

2nd interconnecting piece 28e of the 2nd milliken conductor 28 of the 1st segmentation coil 26a is connected to the 1st of the 2nd segmentation coil 26b 2nd interconnecting piece 27e of milliken conductor 27.Two the 1st interconnecting pieces 27d, 28d interconnected are each other and two the 2nd interconnecting pieces 27e, 28e are adjacently configured on diameter direction each other.

As shown in Fig. 2, in each slot 25, such as two 1 different divided in coils 26 divide each the two of coil 26 Each two 2nd insertion section 27b and 2nd insertion section 28b of the segmentation coil 26 of a 1st insertion section 27a and 1st insertion section 28a and the 2nd It is configured in a manner of along the stacking of diameter direction.That is, in each slot 25, four the 1st milliken conductors 27 and four the 2nd milliken conductors 28 It is configured in a manner of being arranged in eight layers along diameter direction.In each slot 25, each two 1st insertion section 27a and 1st insertion section 28a Configuration is configured in the inner circumferential side in diameter direction, each two 2nd insertion section 27b and 2nd insertion section 28b in the peripheral side in diameter direction.

Fig. 5 is the solid of the superstructure of the stator 14 in the rotating electric machine 10 for indicate the embodiments of the present invention Figure.

As shown in figure 5, configuring the transition part outside the slot 25 of the 1st direction side of axis direction in each segmentation coil 26 27c, 28c form the 1st coil-end 22a, configure the 1st interconnecting piece 27d, 28d outside the slot 25 of the 2nd direction side of axis direction and 2nd interconnecting piece 27e, 28e forms the 2nd coil-end 22b.

(such as configuration is in the segmentation the 2nd point of coil 26 of the 1st end of coil 22 for the 1st end in the both ends of each coil 22 Cut the 2nd interconnecting piece 28e etc. of conductor 28) be input/output connecting pin, be connected to the 31 (example of conductive terminal component of each phase Such as conductive terminal component 31U, 31V, 31W of U phase, V phase and W phase).(such as configuration is online for the 2nd end in the both ends of each coil 22 The 2nd interconnecting piece 28e etc. of 2nd milliken conductor 28 of the segmentation coil 26 of the 2nd end of circle 22) it is used for the neutral point in Y wiring Connecting pin, be connected to common neutral conductive component 32 relative to multiple coils 22.

In each coil 22, separatedly configures and should be interconnected in the circumferential direction equipped with not abutted on diameter direction Multiple connecting ends are (for example, 1st segmentation of the configuration in the 2nd end of coil 22 and the different segmentation coils 26 of the 2nd end periphery 2nd interconnecting piece 27e of conductor 27 is each other etc.) in the case where, each connecting end passes through connection conductive member 33 (such as U phase, V phase and W Connection conductive member 33U, 33V, 33W of phase) and link.

Conductive terminal component 31, neutral conductive component 32 and the respective shape example of multiple connection conductive members 33 of each phase Such as it is created as plate.Conductive terminal component 31, neutral conductive component 32 and the multiple connection conductive members 33 of each phase are respective For example, copper sheet etc..Conductive terminal component 31, neutral conductive component 32 and the respective example of multiple connection conductive members 33 of each phase Such as it is configured at the 2nd coil-end 22b on the vertical direction top of stator 14, and so that substantially parallel with the diameter direction side of thickness direction Formula and configure.

The conductive terminal component 31 of each phase, neutral conductive component 32 and it is multiple connection conductive member 33 it is each in, It constitutes and drips or the cooling surface of ejector refrigeration agent F towards the surface of diameter direction peripheral side.The shape of each cooling surface is created as making The shape that refrigerant F is detained.

Fig. 6 is the structural example of the neutral conductive component 32 in the rotating electric machine 10 for indicate the embodiments of the present invention Perspective view.

As shown in fig. 6, at least part for example on the surface 32A of neutral conductive component 32, is bent equipped with passing through The recess portion 41 of processing etc. and formation.Recess portion 41 is, for example, by being recessed on the short side direction of neutral conductive component 32 with central portion Mode and the surface 32A that bends to V shape or U-shaped formed.It is supplied to the surface of neutral conductive component 32 as a result, Refrigerant F on 32A will be trapped in recess portion 41, thus, for example refrigerant F is in table compared with not formed recess portion 41 the case where Residence time on the 32A of face is elongated.

Refrigerant supply unit 15 is, for example, to be set to shell 11, and configure in the top of vertical direction relative to stator 14. Refrigerant supply unit 15 for example has the tubular element 15a axially extended.The inside of tubular element 15a and it is formed in shell 11 refrigerant flow path (illustration omitted) communicates, the refrigeration to be circulated in refrigerant flow path by pump (pump) (illustration omitted) The inside of agent F inflow tubular element 15a.In tubular element 15a, it is formed at least towards each phase in the 2nd coil-end 22b Conductive terminal component 31, neutral conductive component 32 and it is multiple connection conductive member 33 each mode and be open multiple Squit hole (illustration omitted).In turn, it in tubular element 15a, is formed in a manner of towards the 1st coil-end 22a and is open Multiple squit holes (illustration omitted).The refrigerant F inside tubular element 15a is flowed through from each squit hole towards the conductive terminal of each phase Component 31, neutral conductive component 32 and multiple connection conductive member 33 each and spray.Refrigerant F is, for example, fluid drive The lubricating oil such as case oil (Automatic Transrnission Fluid, ATF).

As described above, stator 14 according to the present embodiment, forms recessed on the surface 32A of neutral conductive component 32 Portion 41 is detained refrigerant F, inhibits refrigerant F to wander from the 32A of surface, therefore be able to extend in neutral conductive component 32 The residence time of refrigerant F, so as to improve the cooling performance of refrigerant F.Thereby, it is possible to make for the multiple coils 22 of connection And it is easy the cooling performance of the neutral conductive component 32 of fever, cool down multiple coils 22 well so as to efficiency.

Moreover, not needing the component additional to neutral point conductive member 32 for example, can be formed by bending machining etc. Recess portion 41, therefore it is able to suppress the increase of weight and the increase of structure required cost.

Moreover, rotating electric machine 10 according to the present embodiment, refrigerant supply unit 15 can be to being formed in recess portion 41 32 efficiency of property point conductive member supplies refrigerant F well, so as to improve refrigerant F to the cooling performance of stator 14.

Hereinafter, the variation to embodiment is illustrated.

In the embodiment, recess portion 41 is equipped on the surface 32A of neutral conductive component 32, but be not limited to This.

Fig. 7 is the neutral conductive structure in the rotating electric machine 10 for the 1st variation for indicating the embodiments of the present invention The perspective view of the structural example of part 32.

As shown in fig. 7, at least part on the surface 32A of the neutral conductive component 32 of the 1st variation, with from table Mode outstanding on the 32A of face, equipped with the guide portion 42 formed by bending machining etc..Guide portion 42 is for example located at neutral point and leads The end for being relatively far from 21 side of stator core in axial direction in both ends 32a, 32b on the short side direction of electric components 32 The 32a or end 32a that downstream side is located opposite from the emission direction of refrigerant F.

According to the 1st variation, guide portion 42 is detained refrigerant F, inhibits refrigerant F from the end on the 32A of surface 32a is wandered, therefore the residence time for the refrigerant F being able to extend in neutral conductive component 32, so as to improve refrigerant F Cooling performance.Moreover, guide portion 42 is set is relatively far from 21 side of stator core or the ejection in refrigerant F in axial direction Downstream side is relatively set on direction, even if generating flying for refrigerant F from the surface 32A of neutral point conductive member 32 as a result, In the case where foam, it is also able to suppress dispersing for droplet.

In 1st variation, the end 32a on the surface 32A of neutral conductive component 32 is equipped with guide portion 42, but It's not limited to that.

Fig. 8 is the neutral conductive structure in the rotating electric machine 10 for the 2nd variation for indicating the embodiments of the present invention The perspective view of the structural example of part 32.

As shown in figure 8, at least part on the surface 32A of the neutral conductive component 32 of the 2nd variation, with from table Mode outstanding on the 32A of face, equipped with multiple for example a pair of of the guide portions 42,42 formed by bending machining etc..A pair of guidance Portion 42,42 is for example located at both ends 32a, 32b on the short side direction of neutral conductive component 32, i.e., in axial direction relatively Far from 21 side of stator core and close to end 32a, 32b of 21 side of stator core, or on the emission direction of refrigerant F relatively Ground is located at end 32a, 32b of downstream side and upstream side.

According to the 2nd variation, a pair of of guide portion 42,42 inhibit refrigerant F from the 32A of surface both ends 32a, 32b is wandered, thus can throughout surface 32A whole region and make refrigerant F be detained, be able to extend neutral conductive component 32 In refrigerant F residence time, and can be improved the cooling performance of refrigerant F.

In addition, in the embodiment, the 1st variation and the 2nd variation, to the recess portion for being set to neutral conductive component 32 41 and guide portion 42 be illustrated, but not limited to this, can also each phase conductive terminal component 31 and it is multiple connection lead Electric components 33 it is each in, be provided likewise with each of recess portion 41 and guide portion 42 with neutral conductive component 32.Thereby, it is possible to Efficiency cools down multiple coils 22 well.

In addition, in the embodiment, stator core 21 can also by by the multiple segmentation iron cores arranged in the circumferential direction according to Sequence links and is formed.

In addition, coil 22 has multiple segmentation coils 26, and but not limited to this in the embodiment.Coil 22 It can be the winding of other forms.

In addition, slot 25 can also be the so-called closed slot that the end on the inside of diameter direction be closed in the embodiment (closed slot)。

In addition, rotating electric machine 10 is mounted in vehicle, and but not limited to this in the embodiment, can also be equipped on Other equipment.

The embodiments of the present invention is only illustration person, it is not intended to limit the range of utility model.These embodiment party Formula can be implemented with other various forms, do not depart from utility model purport in the range of, be able to carry out and various omit, set It changes, change.These embodiments or its deformation are included in the range or purport of utility model, similarly, are wanted included in right In the range of utility model documented by asking and its equalization.

Claims (5)

1. a kind of stator, characterized by comprising:

Stator core is formed with multiple slots；

Multiple coils insert multiple slots；And

Conductive member is connected in the outside of the slot with the coil,

The conductive member has the delay component for being detained refrigerant.

2. stator according to claim 1, which is characterized in that

The delay component is the guide portion outstanding from the surface of the conductive member.

3. stator according to claim 1, which is characterized in that

The delay component is the recess portion being located on the surface of the conductive member.

4. stator according to any one of claim 1 to 3, which is characterized in that

The conductive member is connected to the neutral point of multiple coils or the connecting end of the coil.

5. a kind of rotating electric machine, characterized by comprising:

Stator described in any one of Claims 1-4；

Rotor is configured in the inside of the stator；And

Refrigerant supply part supplies the refrigerant at least towards the conductive member.