阅读说明：本技术 旋转电机 (Rotating electrical machine ) 是由 日野辰郎 中村成志 江头康平 小仓启畅 松冈祥平 冈本省吾 吉田真一郎 于 2017-05-23 设计创作，主要内容包括：本发明获得一种抑制轴向和径向的尺寸增大且小型的旋转电机。在本发明的旋转电机中,具有：第一末端和第二末端,所述第一末端和所述第二末端是内径侧末端和外径侧末端中的一方的末端,且分别从在周向上分开的两个槽延伸出；以及第三末端,所述第三末端从位于所述两个槽之间的槽延伸出,所述第一末端和所述第二末端由汇流条连接,所述汇流条具有：第一端部,所述第一端部与所述第一末端的前端部连接；第二端部,所述第二端部与所述第二末端的前端部连接；以及搭接部,所述搭接部以穿过所述第三末端的所述槽一侧的方式沿周向配置在比所述第一端部和所述第二端部更靠所述定子铁芯一侧,并且所述搭接部将所述第一端部与所述第二端部连结。(The present invention provides a rotating electrical machine which is small-sized and suppressed in size increase in the axial and radial directions, the rotating electrical machine of the present invention includes a -th and a second terminal which are ends of side out of the inner diameter side and the outer diameter side and which extend from two slots separated in the circumferential direction, respectively, and a third terminal which extends from a slot located between the two slots, the -th and the second terminal being connected by a bus bar having a -th end portion to which a -th end portion of the -th terminal is connected, a second end portion to which a leading end portion of the second terminal is connected, and a lap joint portion which is arranged on the stator core side than the -th and the second end portions in the circumferential direction so as to pass through the -side of the slot of the third terminal, and which connects the -th end portion to the second end portion.)

A rotating electric machine of 1, kind, comprising a stator having an annular stator core formed with a plurality of slots in a circumferential direction and a stator winding mounted on the stator core,

the stator windings each have a plurality of distributed-wound coils made of an insulation-covered conductor,

each coils of the plurality of coils including 2X number of slot insertion portions into which the slot is inserted, (2X-1) number of return portions alternately connecting the 2X number of slot insertion portions at and end sides in an axial direction of the stator core to continuously connect the 2X number of slot insertion portions, an inner diameter side tip extending from the slot insertion portion at end of the continuous slot insertion portion, and an outer diameter side tip extending from the slot insertion portion at end of the continuous slot insertion portion, where X is a natural number of 1 or more,

the inside diameter side ends extend from at the innermost diameter position of each of the slots,

the outer diameter side extremities extend from at the outermost diameter position of every of the slots,

2X of the slot inserts are arranged in rows in a radial direction and inserted into each of the slots,

the rotating electric machine has an th end and a second end that are sides of the inner diameter side end and the outer diameter side end and that extend from two circumferentially spaced grooves, respectively, and a third end that extends from a groove located between the two grooves,

the th end and the second end are connected by a bus bar,

the bus bar has an th end portion, the th end portion being connected to a tip end portion of the th end, a second end portion being connected to a tip end portion of the second end, and a lap portion, the lap portion being disposed circumferentially closer to the stator core side than the th end portion and the second end portion so as to pass through the slot side of the third end, and the lap portion connecting the th end portion and the second end portion.

2. The rotating electric machine according to claim 1,

the bridge has a bend that radially displaces the th end and the second end.

3. The rotating electric machine according to claim 1 or 2,

the bus bar is made of the conductor covered with insulation.

4. The rotating electric machine according to any of claims 1 to 3,

the grooves are formed in a proportion of N per phase per pole, wherein N is a natural number of 2 or more,

the stator winding is a three-phase winding,

the two grooves are circumferentially spaced by M1 grooves, where M1 is a natural number other than 3N and 2 or more.

5. The rotating electric machine according to claim 4,

the rotary electric machine having a fourth end located between the two slots and extending from a different slot than the slot from which the third end extends,

the groove from which the fourth tip extends is circumferentially spaced M2 grooves from of the two grooves and circumferentially spaced M3 grooves from the other of the two grooves, wherein M2 is a natural number of 2 or more and other than 3N, M3 is a natural number of 2 or more and other than 3N,

the front end portion of the fourth terminal is directly connected to the front end portion of the th terminal or the front end portion of the second terminal.

6. The rotating electric machine according to claim 5,

the th end, the second end, and the fourth end are neutral points of the stator windings.

7. The rotating electric machine according to any of claims 1 to 6,

the bus bar is mounted with a temperature detection element.

8. The rotating electric machine according to claim 7,

the temperature detection member is disposed between the bus bar and the inner diameter side end or the outer diameter side end adjacent to the bus bar in the circumferential direction.

9. The rotating electric machine according to claim 8,

the temperature detection element is disposed on a surface of the third end facing the groove .

Technical Field

The present invention relates to types of rotating electric machines such as motors and generators, and particularly relates to a types of stator winding structures.

Background

In recent years, rotating electrical machines such as motors and generators are required to be small and have high productivity.

In the conventional rotating electric machine described in patent document 1, a phase winding is configured by drawing a terminal portion drawn from an inner diameter side in a slot radially outward and directly connecting the terminal portion drawn from an outer diameter side in the slot, and connection of a neutral point of the phase winding and drawing of an output line are performed on an axially outer side of a coil edge using a bus bar.

In the conventional rotating electric machine described in patent document 2, a coupling member couples a neutral point bus bar to a cover support member (japanese patent No. カフサ) to form a -body unit.

Disclosure of Invention

Technical problem to be solved by the invention

In patent document 1, since the bus bar for connecting the neutral points of the phase windings is disposed axially outside the coil edge, there is a problem that the axial length of the coil edge becomes long and the axial dimension of the stator becomes large.

In patent document 2, since the neutral point bus bar is disposed on the outer diameter side of the coil side end, there is a problem that the radial dimension of the coil side end becomes large, and the radial dimension of the stator becomes large.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide types of small-sized rotating electric machines capable of suppressing increase in the axial and radial dimensions.

Technical scheme for solving technical problem

The rotating electric machine includes a stator having an annular stator core formed with a plurality of slots in a circumferential direction, and stator windings mounted to the stator core, the stator windings respectively having a plurality of coils of distributed winding made of an insulation-covered conductor, each of the plurality of coils including 2X slot insertion portions into which the slot insertion portions are inserted, (2X-1) return portions extending from a slot insertion portion located at an end side in an axial direction of the stator core and another 630 end side to alternately connect the 2X slot insertion portions to continuously connect the 2X slot insertion portions, an inner diameter side end extending from a slot insertion portion located at an end 1 of the continuous slot insertion portion, and an outer diameter side end extending from a slot insertion portion located at an end 6866 of the continuous slot insertion portion, wherein the inner diameter side end is a natural number greater than 1, the inner diameter end is located at an end of the continuous slot insertion portion, and a second end portion connected with a second end portion of a third end portion of a second end portion of a stator core insert portion, a second end portion is located at a position 355 and a second end portion, and a third end portion is located at a position 465, and a second end portion is located at a position where the second end portion of the second end portion, and a third end portion is located at a longitudinal end portion of a longitudinal direction of the stator core insert portion, and a longitudinal end portion is located at a longitudinal direction of the stator core insert portion, wherein the stator core insert portion, the stator core insert portion is located at a longitudinal end portion, the stator core insert portion, the stator winding 2, the stator winding portion is located at a longitudinal end portion, the stator winding portion is located at a longitudinal end portion, the stator winding portion is located at a longitudinal end portion, the stator winding portion, the longitudinal end portion.

Effects of the invention

According to the present invention, the bridging portion of the bus bar is disposed on the stator core side of the end portion and the second end portion connected to the tip end portion of the second end portion in the circumferential direction so as to pass through the slot side of the third end, and therefore, the bridging portion of the bus bar is located on the slot side of the third end, and the radial expansion of the coil end can be suppressed, and the radial miniaturization of the stator can be achieved.

Drawings

Fig. 1 is a sectional view showing a rotary electric machine according to embodiment of the present invention.

Fig. 2 is a perspective view showing a main part of a rotary electric machine according to embodiment of the present invention.

Fig. 3 is a perspective view showing a stator in a rotating electric machine according to embodiment of the present invention.

Fig. 4 is an end view showing the stator of the rotating electric machine according to embodiment of the present invention as viewed from the axially outer side.

Fig. 5 is an enlarged view of a portion a of fig. 4.

Fig. 6 is an end view of the th winding body constituting the stator winding of the stator in the rotating electric machine according to embodiment of the present invention, as viewed from the axially outer side.

Fig. 7 is a front view of a th winding body constituting a stator winding of a stator in a rotating electric machine according to embodiment of the present invention, as viewed from the radially inner side.

Fig. 8 is a perspective view showing a th winding body constituting a stator winding of a stator in a rotating electric machine according to embodiment of the present invention.

Fig. 9 is an end view of the second winding body that constitutes the stator winding of the stator in the rotating electric machine according to embodiment of the invention, as viewed from the axially outer side.

Fig. 10 is a front view of a second winding body constituting a stator winding of a stator in a rotating electric machine according to embodiment of the present invention, as viewed from the radially inner side.

Fig. 11 is a perspective view showing a second winding body constituting a stator winding of a stator in a rotating electric machine according to embodiment of the present invention.

Fig. 12 is a main part cross-sectional view schematically showing a slot housed state of a winding body in a rotating electric machine according to embodiment of the present invention.

Fig. 13 is a perspective view of a main part of a stator in a rotating electric machine according to embodiment of the present invention, as viewed from the inner diameter side.

Fig. 14 is a schematic diagram illustrating an arrangement state of th turn portions of stator windings in a rotating electric machine according to embodiment of the present invention.

Fig. 15 is a schematic diagram illustrating an arrangement state of th turn portions of stator windings in a rotating electric machine according to embodiment of the present invention.

Fig. 16 is a diagram illustrating a wiring pattern of a stator winding in a rotating electric machine according to embodiment of the present invention.

Fig. 17 is a diagram showing a connection pattern of U-phase coils in a rotating electric machine according to embodiment of the present invention.

Fig. 18 is a schematic view of the winding body of the U-phase coil viewed from the radially inner side.

Fig. 19 is a diagram showing a wiring pattern of the W-phase coil in the rotating electric machine according to embodiment of the present invention.

Fig. 20 is a schematic view of a winding body of the W-phase coil viewed from the radially inner side.

Fig. 21 is a diagram showing a wiring pattern of a V-phase coil of a rotating electric machine according to embodiment of the present invention.

Fig. 22 is a schematic view of the winding body of the V-phase coil viewed from the radially inner side.

Fig. 23 is a side view showing a stator of a rotating electric machine according to embodiment of the present invention.

Fig. 24 is a perspective view showing a main part of a coil side end of a stator winding in a rotating electric machine according to embodiment of the present invention.

Fig. 25 is a side view of a main portion around a change point of an insertion slot group of a stator winding in a rotating electric machine according to embodiment of the present invention.

Fig. 26 is a schematic view showing the periphery of a changed portion of an insertion slot group of a stator winding in a rotating electric machine according to embodiment of the present invention.

Fig. 27 is a schematic diagram showing the periphery of a neutral point connection portion of a stator winding in a rotating electric machine according to embodiment of the present invention.

Fig. 28 is a side view of a main portion of a stator in a rotating electric machine according to a second embodiment of the present invention, as viewed from the outer diameter side.

Fig. 29 is a schematic diagram illustrating an arrangement state of seventh turn portions of stator windings in a rotating electrical machine according to a second embodiment of the present invention.

Fig. 30 is a schematic diagram illustrating an arrangement state of seventh turn portions of stator windings in a rotating electrical machine according to a second embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of a rotating electric machine according to the present invention will be described with reference to the drawings.