CN116264425A

CN116264425A - Electric compressor

Info

Publication number: CN116264425A
Application number: CN202211596731.8A
Authority: CN
Inventors: 柳惠史; 大桥宽之
Original assignee: Toyota Industries Corp
Current assignee: Toyota Industries Corp
Priority date: 2021-12-14
Filing date: 2022-12-12
Publication date: 2023-06-16
Also published as: DE102022213455A1; JP2023088076A

Abstract

The present disclosure relates to an electric compressor. The electric motor of the electric compressor has a coil formed by delta connection of a U-phase wire, a V-phase wire and a W-phase wire. The 1 st and 2 nd leads of the U-phase wire, the V-phase wire, and the W-phase wire are arranged in the order of the U-phase, V-phase, and W-phase from the outer side toward the inner side in the radial direction of the stator core, and are led out from the stator core. Each of the 2 nd leads is connected to the connector across the lead-out position of the 1 st lead in phase in the circumferential direction of the stator core. The 2 nd lead of the U-phase wire is led out from a position farther from the connector than the led-out positions of the 2 nd leads of the V-phase wire and the W-phase wire in the circumferential direction, and is electrically connected to the 1 st lead of the W-phase wire through an inner side of the led-out position of the 2 nd lead of the W-phase wire in the radial direction.

Description

Electric compressor

Technical Field

The present disclosure relates to an electric compressor.

Background

An electric compressor disclosed in japanese patent application laid-open publication No. 2019-140737 includes a compression unit, an electric motor, a motor driving circuit, and a connector. The compression portion compresses a fluid. The electric motor drives the compression section. The motor driving circuit drives the electric motor. The connector electrically connects the electric motor and the motor drive circuit.

The electric motor has a stator. The stator has a cylindrical stator core, a U-phase wire, a V-phase wire, and a coil in which the W-phase wire is Y-wired, i.e., star-wired. The U-phase wire, V-phase wire, and W-phase wire have a 1 st lead wire as one side lead wire and a 2 nd lead wire as the other side lead wire, respectively. The 1 st lead and the 2 nd lead are paired. The 1 st leads of the U-phase wire, V-phase wire, and W-phase wire are connected to the connector. The 2 nd leads of the U-phase wire, V-phase wire, and W-phase wire are connected to each other as neutral points.

In japanese patent application laid-open No. 2006-094694, a delta connection is disclosed as another connection method for a U-phase electric wire, a V-phase electric wire, and a W-phase electric wire. In the case of adopting a delta connection as a connection scheme of the U-phase wire, the V-phase wire, and the W-phase wire, the 1 st lead of the U-phase wire and the 2 nd lead of the V-phase wire are electrically connected. The 1 st lead of the V-phase wire and the 2 nd lead of the W-phase wire are electrically connected. The 1 st lead of the W-phase wire and the 2 nd lead of the U-phase wire are electrically connected.

In the case of using a delta connection, when 2 leads among the U-phase wire, V-phase wire, and W-phase wire are electrically connected to leads of different phases, the leads are liable to cross. If the leads intersect, the electric motor may be enlarged in the axial direction of the stator core, and the electric compressor may be enlarged as a whole.

Disclosure of Invention

An electric compressor according to one aspect is provided with: a compression unit configured to compress a fluid; an electric motor including a stator having a cylindrical stator core, and coils formed by triangular wire winding in a distributed manner, and a U-phase wire, a V-phase wire, and a W-phase wire, and configured to drive the compression unit; a motor driving circuit configured to drive the electric motor; and a connector that electrically connects the electric motor and the motor driving circuit, the connector being provided so as to face coil ends of the coils located at one end in an axial direction of the stator core, the U-phase wire, the V-phase wire, and the W-phase wire each having a 1 st lead provided on one side and a 2 nd lead provided on the other side, and being electrically connected to the connector via the 1 st lead and the corresponding 2 nd lead, the U-phase wire, the V-phase wire, and each 1 st lead of the W-phase wire being arranged in order of U-phase, V-phase, and W-phase from outside in a radial direction of the stator core and being led out from the stator core, the U-phase wire, the V-phase wire, and each 2 nd lead of the W-phase wire being arranged in order of U-phase, V-phase, and W-phase from outside in the radial direction and being led out from the stator core, the U-phase wire, the V-phase wire, and the W-phase wire being led out from the W-phase wire being connected to the connector at positions on the radial direction of the 1 st lead, and the W-phase wire being led out from the W-phase wire, and the W-phase wire being led out from the position from the radial direction and the W-phase wire.

Drawings

Fig. 1 is a side sectional view of an electric compressor.

Fig. 2 is a front view of the stator.

Fig. 3 is a schematic diagram for explaining wave wrapping.

Fig. 4 is a schematic diagram for explaining the lead position of the lead portion.

Description of the reference numerals

10 … electric compressor

17 … compression part

18 … electric motor

18b … stator

19 … motor driving circuit

40 … connector

41U … U phase terminal

41V … V phase terminal

41W … W phase terminal

50 … stator core

60 … coil

60U … U phase wire

60V … V phase wire

60W … W phase wire

The 1 st U-phase lead part with 62U … as one lead

62V … 1V phase lead portion as one side lead

62W … as the 1W phase lead portion of one side lead

63U … as the 2U-phase lead portion of the other lead

63V … as the 2V phase lead portion of the other side lead

63W … as the 2W phase lead portion of the other lead

71 … U phase tube

72 … V phase tube

73 … W phase tube

601 … 1 st coil end as coil end

Detailed Description

An embodiment of the motor-driven compressor will be described below with reference to fig. 1 to 4.

Motor compressor

As shown in fig. 1, the electric compressor 10 includes a housing 11, a shaft support member 15, a rotary shaft 16, a compression unit 17, an electric motor 18, a motor drive circuit 19, an airtight terminal 30, and a connector 40.

< Shell >

The housing 11 includes a motor housing 12, a discharge housing 13, and a cover 14.

The motor housing 12 has a bottomed tubular shape. The motor housing 12 includes a bottom wall 12a and a peripheral wall 12b extending cylindrically from the outer periphery of the bottom wall 12a.

The bottom wall 12a has a receiving recess 20. The accommodating recess 20 is a portion recessed from the inner surface 121 of the bottom wall 12a.

The bottom wall 12a has a through hole 21. The through hole 21 penetrates the bottom wall 12a. The through hole 21 is located at the bottom surface of the accommodating recess 20. The through hole 21 communicates the inside and the outside of the motor housing 12.

The bottom wall 12a has a protrusion (boss) 23. The projection 23 is a portion protruding from the inner surface 121 of the bottom wall 12a toward the opening of the motor housing 12. The boss 23 has a 1 st boss constituting portion 23a and a 2 nd boss constituting portion 23b. The 1 st projection constituting portion 23a is a portion continuous with the inner surface 121 of the bottom wall 12a. The 2 nd projection forming portion 23b is a portion protruding from the tip end surface of the 1 st projection forming portion 23 a. The boss 23 has a bearing housing portion 23c. The bearing housing portion 23c is a portion recessed from the distal end surface of the 2 nd boss constituting portion 23b.

In fig. 2, the projection 23 is shown as a two-dot chain line. The outer peripheral surface of the 1 st projection constituting portion 23a has a 1 st curved surface 231 and a 1 st flat surface 232. The 1 st flat surface 232 is located inside the 1 st curved surface 231 in the radial direction of the peripheral wall 12b. The outer peripheral surface of the 2 nd boss configuration part 23b has a 2 nd curved surface 233 and a 2 nd flat surface 234. The 2 nd curved surface 233 is located further inward than the 1 st curved surface 231 in the radial direction of the peripheral wall 12b. The 2 nd flat surface 234 is located further inward than the 2 nd curved surface 233 in the radial direction of the peripheral wall 12b. The 2 nd planar surface 234 is coplanar with the 1 st planar surface 232. The 1 st flat surface 232 and the 2 nd flat surface 234 constitute the escape portion 23d of the projection 23.

As shown in fig. 1, the peripheral wall 12b has a suction port 12h. One end of an external refrigerant circuit, not shown, is connected to the suction port 12h.

The discharge housing 13 is coupled to an open end of the motor housing 12. The discharge casing 13 has a bottomed tubular shape. The bottom wall of the discharge housing 13 has a discharge port 13h. The other end of the external refrigerant circuit is connected to the discharge port 13h.

The cover 14 is coupled to the bottom wall 12a of the motor housing 12. The cover 14 has a bottomed tubular shape. The housing space S1 is defined by the outer surface of the bottom wall 12a of the motor housing 12 and the inner surface of the cover 14.

< shaft support Member >

The shaft support member 15 is housed in the motor case 12. The shaft support member 15 has a shaft insertion hole 15a.

< rotation shaft >

The rotary shaft 16 is housed in the motor housing 12. The axis of the rotary shaft 16 extends along the axial direction of the peripheral wall 12 b. One end, i.e., the 1 st end of the rotation shaft 16 is inserted into the shaft insertion hole 15a of the shaft support member 15. A 1 st radial bearing 16a is provided between the shaft insertion hole 15a and the 1 st end portion of the rotary shaft 16. One end of the rotation shaft 16 is rotatably supported by the shaft support member 15 via a 1 st radial bearing 16a. The other end portion of the rotation shaft 16 is inserted into the bearing housing portion 23c of the boss 23. A 2 nd radial bearing 16b is provided between the bearing housing portion 23c and the 2 nd end portion which is the other end portion of the rotary shaft 16. The 2 nd end of the rotation shaft 16 is rotatably supported by the boss 23 via a 2 nd radial bearing 16b.

< compression section >

The compression unit 17 is housed in the motor case 12. The compression portion 17 is disposed closer to the opening of the motor housing 12 than the shaft support member 15 in the axial direction of the rotary shaft 16. The compression portion 17 compresses the refrigerant as a fluid by rotation of the rotary shaft 16.

The compression unit 17 of the present embodiment includes a fixed scroll 17a and a movable scroll 17b. The fixed scroll 17a is fixed in the motor housing 12. The movable scroll 17b is disposed so as to face the fixed scroll 17 a. A compression chamber S2 of which the volume can be changed is partitioned between the fixed scroll 17a and the movable scroll 17b. The discharge chamber S3 is partitioned by the fixed scroll 17a and the inner surface of the discharge housing 13.

The refrigerant sucked into the motor housing 12 from the suction port 12h is compressed by the change in the volume of the compression chamber S2. The compressed refrigerant is discharged to the discharge chamber S3. The refrigerant discharged to the discharge chamber S3 flows out to the external refrigerant circuit through the discharge port 13 h. The refrigerant flowing out to the external refrigerant circuit flows back into the motor case 12 through the suction port 12 h.

< electric Motor >

The electric motor 18 is housed in the motor housing 12. The electric motor 18 is disposed between the shaft support member 15 and the bottom wall 12a of the motor housing 12 in the axial direction of the rotary shaft 16. The electric motor 18 rotates the rotary shaft 16 to drive the compression unit 17.

The electric motor 18 is composed of a rotor 18a and a stator 18 b. The rotor 18a rotates integrally with the rotary shaft 16. The rotor 18a has a cylindrical rotor core 181 and a plurality of permanent magnets 182. The rotor core 181 is fixed to the rotary shaft 16. A plurality of permanent magnets 182 are buried in the rotor core 181. The permanent magnets 182 are disposed at equal intervals in the circumferential direction of the rotor core 181. The stator 18b surrounds the rotor 18a. The detailed configuration of the stator 18b will be described later.

< Motor drive Circuit >

The motor driving circuit 19 is disposed in the accommodation space S1. The motor drive circuit 19 drives the electric motor 18.

< airtight terminal >

The airtight terminal 30 has a U-phase conductive member 31U, a V-phase conductive member 31V, a W-phase conductive member 31W, and a support plate 32. Each of the

conductive members

31u, 31v, and 31w is a cylindrical metal terminal extending linearly. The

conductive members

31u, 31v, 31w are inserted through the through-holes 21 of the bottom wall 12 a. One end, i.e., the 1 st end, of each of the

conductive members

31u, 31v, 31w is electrically connected to the motor driving circuit 19 in the accommodation space S1. The other end, i.e., the 2 nd end, of each

conductive member

31u, 31v, 31w protrudes into the motor housing 12. The support plate 32 supports the

conductive members

31u, 31v, 31w in an insulated state from each other.

< connector >

The connector 40 is accommodated in the motor housing 12. The connector 40 is disposed between the electric motor 18 and the bottom wall 12a in the axial direction of the rotary shaft 16.

As shown in fig. 2, the connector 40 includes a U-phase terminal 41U, a V-phase terminal 41V, a W-phase terminal 41W, and an insulating bundling block 42.

The cluster block 42 includes a U-phase terminal housing chamber 43U, a V-phase terminal housing chamber 43V, and a W-phase terminal housing chamber 43W. The U-phase terminal accommodating chambers 43U, V-phase terminal accommodating chambers 43V, and W-phase terminal accommodating chambers 43W are opened at the outer surfaces of the cluster block 42, respectively. The U-phase terminal 41U is accommodated in the U-phase terminal accommodation chamber 43U. The V-phase terminal 41V is accommodated in the V-phase terminal accommodation chamber 43V. The W-phase terminal 41W is accommodated in the W-phase terminal accommodation chamber 43W. The U-phase terminal 41U, the V-phase terminal 41V, and the W-phase terminal 41W are insulated from each other in a state of being accommodated in the cluster block 42.

The cluster block 42 has a U-phase conductive member insertion hole 44U, a V-phase conductive member insertion hole 44V, and a W-phase conductive member insertion hole 44W. The U-phase conductive member insertion hole 44U communicates the U-phase terminal accommodation chamber 43U with the outside of the cluster block 42. The V-phase conductive member insertion hole 44V communicates the V-phase terminal accommodation chamber 43V with the outside of the cluster block 42. The W-phase conductive member insertion hole 44W communicates the W-phase terminal accommodation chamber 43W with the outside of the cluster block 42.

The other end, i.e., the 2 nd end of the U-phase conductive member 31U is inserted into the U-phase terminal accommodation chamber 43U through the U-phase conductive member insertion hole 44U. The other end, i.e., the 2 nd end of the V-phase conductive member 31V is inserted into the V-phase terminal accommodation chamber 43V through the V-phase conductive member insertion hole 44V. The other end, i.e., the 2 nd end of the W-phase conductive member 31W is inserted into the W-phase terminal accommodation chamber 43W through the W-phase conductive member insertion hole 44W. In the cluster block 42, the U-phase terminal 41U is connected to the 2 nd end of the U-phase conductive member 31U. The V-phase terminal 41V is connected to the 2 nd end of the V-phase conductive member 31V. The W-phase terminal 41W is connected to the 2 nd end of the W-phase conductive member 31W.

< stator >

The stator 18b is described in detail.

As shown in fig. 3, the stator 18b has a stator core 50 and a coil 60.

< stator core >

The stator core 50 has a cylindrical yoke 51 and a plurality of teeth 52. The stator core 50 of the present embodiment has 30 teeth 52.

As shown in fig. 1, the outer peripheral surface of the yoke 51 is fixed to the inner peripheral surface of the peripheral wall 12b of the motor housing 12. Thereby, the stator 18b is fixed to the motor housing 12. The axial direction of the yoke 51 coincides with the axial direction of the rotary shaft 16. The axial direction, the radial direction, and the circumferential direction of the yoke 51 are set as the axial direction, the radial direction, and the circumferential direction of the stator core 50, respectively.

As shown in fig. 3, each tooth 52 is a portion protruding radially inward from the inner peripheral surface of the yoke 51. The plurality of teeth 52 are arranged at intervals in the circumferential direction of the stator core 50. Slots (slots) 53 are partitioned by 2 teeth 52 adjacent in the circumferential direction of the stator core 50. The slots 53 are arranged at equal intervals in the circumferential direction of the stator core 50.

As shown in fig. 1, the stator core 50 has a 1 st end face 50a and a 2 nd end face 50b. The 1 st end face 50a is a 1 st end face which is one end face in the axial direction of the stator core 50. The 2 nd end surface 50b is the other end surface in the axial direction of the stator core 50, i.e., the 2 nd end surface. The 1 st end surface 50a is located on a side closer to the motor drive circuit 19 in the axial direction of the rotary shaft 16. The 2 nd end surface 50b is located on a side closer to the compression portion 17 in the axial direction of the rotary shaft 16.

< coil >

As shown in fig. 3, the coil 60 has a U-phase electric wire 60U, a V-phase electric wire 60V, and a W-phase electric wire 60W. As described later, the U-phase electric wire 60U, the V-phase electric wire 60V, and the W-phase electric wire 60W are distributed wound (more specifically, wave wound) around the stator core 50. The U-phase wire 60U, the V-phase wire 60V, and the W-phase wire 60W are connected to each other in a delta configuration. Although not shown, each of the U-phase electric wire 60U, the V-phase electric wire 60V, and the W-phase electric wire 60W has a lead wire made of copper and an insulating film covering the lead wire.

As shown in fig. 1, the coil 60 has a 1 st coil end 601 and a 2 nd coil end 602. The 1 st coil end 601 is located at one end in the axial direction of the stator core 50. The 2 nd coil end 602 is located at the other end in the axial direction of the stator core 50. The 1 st coil end 601 is constituted by a 1 st protruding portion 612 of each

coil portion

61u, 61v, 61w described later. The 2 nd coil end 602 is constituted by a 2 nd protruding portion 613 of each

coil portion

61u, 61v, 61w described later.

As shown in fig. 2 to 4, the U-phase electric wire 60U has a U-phase coil portion 61U, a 1 st U-phase lead portion 62U, and a 2 nd U-phase lead portion 63U. The 1 st and 2 nd U-phase lead portions 62U and 63U are paired 2 leads of the U-phase electric wire 60U. The 1 st phase lead portion 62U is the 1 st lead provided on one side of the U phase wire 60U, and the 2 nd phase lead portion 63U is the 2 nd lead provided on the other side of the U phase wire 60U. The U-phase wire 60U is electrically connected to the connector 40 via the 1 st U-phase lead portion 62U and the 2 nd U-phase lead portion 63U.

The V-phase electric wire 60V has a V-phase coil portion 61V, a 1 st V-phase lead portion 62V, and a 2 nd V-phase lead portion 63V. The 1 st V-phase lead portion 62V and the 2 nd V-phase lead portion 63V are paired 2 leads of the V-phase electric wire 60V. The 1 st V-phase lead portion 62V is the 1 st lead provided on one side of the V-phase electric wire 60V, and the 2 nd V-phase lead portion 63V is the 2 nd lead provided on the other side of the V-phase electric wire 60V. The V-phase electric wire 60V is electrically connected to the connector 40 via the 1 st V-phase lead portion 62V and the 2 nd V-phase lead portion 63V.

The W-phase wire 60W has a W-phase coil portion 61W, a 1 st W-phase lead portion 62W, and a 2 nd W-phase lead portion 63W. The 1 st W-phase lead portion 62W and the 2 nd W-phase lead portion 63W are paired 2 leads of the W-phase electric wire 60W. The 1 st W-phase lead portion 62W is the 1 st lead provided on one side of the W-phase electric wire 60W, and the 2 nd W-phase lead portion 63W is the 2 nd lead provided on the other side of the W-phase electric wire 60W. The W-phase wire 60W is electrically connected to the connector 40 via the 1 st W-phase lead portion 62W and the 2 nd W-phase lead portion 63W.

As shown in fig. 3, U-phase coil portion 61U is a portion of U-phase electric wire 60U wound around stator core 50. The V-phase coil portion 61V is a portion of the V-phase electric wire 60V wound around the stator core 50. The W-phase coil portion 61W is a portion of the W-phase electric wire 60W wound around the stator core 50.

Specifically, each

coil portion

61u, 61v, 61w is configured by wave-winding a plurality of teeth 52 around the stator core 50 in the circumferential direction by a plurality of turns by each

wire

60u, 60v, 60 w. In the present embodiment, each

coil portion

61u, 61v, 61w is configured by wave-winding each

wire

60u, 60v, 60w for 5 turns of the plurality of teeth 52 in the circumferential direction of the stator core 50. In fig. 3, 5

wires

60u, 60v, and 60w are collectively shown as 1 wire for simplicity.

An insulating member, not shown, is provided between each

coil portion

61u, 61v, 61w and the teeth 52. The insulating member insulates the

coil portions

61u, 61v, 61w from the teeth 52.

Each

coil portion

61u, 61v, 61w has a plurality of through portions 611, a plurality of 1 st protruding portions 612, and a plurality of 2 nd protruding portions 613.

Each pass-through portion 611 is a portion passing through the slot 53. Each of the pass-through portions 611 extends in the axial direction of the stator core 50. In each of the

coil portions

61u, 61v, 61w, the pass-through portion 611 is provided every 2 slots in the circumferential direction of the stator core 50 with respect to the plurality of slots 53. In other words, in each of the

coil portions

61u, 61v, 61w, 3 teeth 52 exist between 2 passing portions 611 adjacent in the circumferential direction of the stator core 50.

Each 1 st protruding portion 612 is a portion protruding from the 1 st end surface 50a of the stator core 50 in the axial direction of the stator core 50. Each of the 2 nd protruding portions 613 is a portion protruding from the 2 nd end surface 50b of the stator core 50 in the axial direction of the stator core 50. Each 1 st protruding portion 612 and each 2 nd protruding portion 613 extend in the circumferential direction of the stator core 50. In fig. 3, the 2 nd protruding portion 613 of each

coil portion

61u, 61v, 61w is shown in broken lines. In fig. 4, the 2 nd protruding portion 613 of each

coil portion

61u, 61v, 61w is omitted.

One end, i.e., the 1 st end, of each passing portion 611 is connected to the 1 st protruding portion 612, and the other end of each passing portion 611 is connected to the 2 nd protruding portion 613. In each of the

coil portions

61u, 61v, 61w, the 1 st protruding portion 612 and the 2 nd protruding portion 613 are alternately arranged in the circumferential direction of the stator core 50.

The 1 st protruding portion 612 of each

coil portion

61u, 61v, 61w is bound by a fixing member, not shown, so as not to float from the 1 st end surface 50a of the stator core 50. The 2 nd protruding portion 613 of each

coil portion

61u, 61v, 61w is bound by a fixing member, not shown, so as not to float from the 2 nd end surface 50b of the stator core 50.

As shown in fig. 4, the

electric wires

60u, 60v, 60w constituting the

coil portions

61u, 61v, 61w are arranged in the radial direction of the stator core 50. In the present embodiment, the winding operation of the

wires

60u, 60v, and 60w with respect to the plurality of teeth 52 is performed from the outer side toward the inner side in the radial direction of the stator core 50. Specifically, the

wires

60u, 60v, and 60w are wound around the teeth 52 at positions radially inward of the stator core 50 than the positions wound last time. Accordingly, as the winding operation of the

respective wires

60u, 60v, 60w with respect to the stator core 50 progresses, the winding position of the

respective wires

60u, 60v, 60w with respect to the teeth 52 moves radially inward of the stator core 50.

The U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W are offset in the circumferential direction of the stator core 50. Specifically, each slot 53 has a passing portion 611 of any 1 of the U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W. The passing portion 611 of the U-phase coil portion 61U, the passing portion 611 of the V-phase coil portion 61V, and the passing portion 611 of the W-phase coil portion 61W are sequentially and repeatedly provided in the circumferential direction of the stator core 50. The 1 st projection 612 of the U-phase coil portion 61U, the 1 st projection 612 of the V-phase coil portion 61V, and the 1 st projection 612 of the W-phase coil portion 61W partially overlap in the circumferential direction of the stator core 50. The 2 nd protruding portion 613 of the U-phase coil portion 61U, the 2 nd protruding portion 613 of the V-phase coil portion 61V, and the 2 nd protruding portion 613 of the W-phase coil portion 61W partially overlap in the circumferential direction of the stator core 50.

The U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W are arranged offset from each other in the radial direction of the stator core 50. In the present embodiment, the winding operation of the respective wires 60U, 60V, 60W on the stator core 50 is performed from the outer side toward the inner side in the radial direction of the stator core 50 in the order of the U-phase wire 60u→the V-phase wire 60v→the W-phase wire 60W. Thus, the U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W are arranged in this order from the outer side toward the inner side in the radial direction of the stator core 50. Since fig. 3 and 4 are schematic views, U-phase coil portion 61U, V-phase coil portion 61V, and W-phase coil portion 61W do not overlap in the radial direction of stator core 50. However, in reality, the U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W partially overlap in the radial direction of the stator core 50.

Insulating members, not shown, are provided between the U-phase coil portion 61U and the V-phase coil portion 61V and between the V-phase coil portion 61V and the W-phase coil portion 61W, respectively. The insulating member existing between the U-phase coil portion 61U and the V-phase coil portion 61V insulates the U-phase coil portion 61U and the V-phase coil portion 61V. The insulating member existing between the V-phase coil portion 61V and the W-phase coil portion 61W insulates the V-phase coil portion 61V and the W-phase coil portion 61W.

As shown in fig. 1 and 2, the connector 40 is disposed so as to face the 1 st coil end 601 of the coil 60. The connector 40 is located between the 1 st coil end 601 and the bottom wall 12a in the axial direction of the rotary shaft 16. The U-phase terminal 41U, the V-phase terminal 41V, and the W-phase terminal 41W are arranged in this order from the outside toward the inside in the radial direction of the stator core 50. The opening of the U-phase terminal accommodating chamber 43U, the opening of the V-phase terminal accommodating chamber 43V, and the opening of the W-phase terminal accommodating chamber 43W of the cluster block 42 are arranged in this order from the outside toward the inside in the radial direction of the stator core 50.

As shown in fig. 4, the 1 st U-phase lead portion 62U and the 2 nd U-phase lead portion 63U are portions of the U-phase electric wire 60U that are led out from the stator core 50 without being wound around the stator core 50. One end of the U-phase coil portion 61U is connected to the 1 st U-phase lead portion 62U, and the other end of the U-phase coil portion 61U is connected to the 2 nd U-phase lead portion 63U.

The 1 st V-phase lead portion 62V and the 2 nd V-phase lead portion 63V are portions of the V-phase electric wire 60V that are led out from the stator core 50 without being wound around the stator core 50. One end, i.e., the 1 st end, of the V-phase coil portion 61V is connected to the 1 st V-phase lead portion 62V, and the other end, i.e., the 2 nd end, of the V-phase coil portion 61V is connected to the 2 nd V-phase lead portion 63V.

The 1W-phase lead portion 62W and the 2W-phase lead portion 63W are portions of the W-phase electric wire 60W that are led out from the stator core 50 without being wound around the stator core 50. One end, i.e., the 1 st end, of the W-phase coil portion 61W is connected to the 1 st W-phase lead portion 62W, and the other end, i.e., the 2 nd end, of the W-phase coil portion 61W is connected to the 2 nd W-phase lead portion 63W.

The

lead portions

62u, 62v, 62w, 63u, 63v, 63w are led out from the 1 st end surface 50a of the stator core 50. The

lead portions

62u, 62v, 62w, 63u, 63v, 63w are located between the 1 st end surface 50a of the stator core 50 and the bottom wall 12a in the axial direction of the rotary shaft 16.

As shown in fig. 2, positions at which the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are drawn out are different from positions at which the cluster block 42 is disposed in the circumferential direction of the stator core 50. In the present embodiment, the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are located on the opposite side of the cluster block 42 with respect to the axis of the stator core 50.

As described above, the

electric wires

60u, 60v, 60w constituting the

coil portions

61u, 61v, 61w are arranged every time the stator core 50 is wound from the start of winding to the end of winding in the radial direction of the stator core 50. Therefore, the extraction position of the 1 st U-phase lead portion 62U in the radial direction of the stator core 50 is different from the extraction position of the 2 nd U-phase lead portion 63U in the radial direction of the stator core 50. The extraction position of the 1 st V-phase lead portion 62V in the radial direction of the stator core 50 is different from the extraction position of the 2 nd V-phase lead portion 63V in the radial direction of the stator core 50. The extraction position of the 1W-th phase lead portion 62W in the radial direction of the stator core 50 is different from the extraction position of the 2W-th phase lead portion 63W in the radial direction of the stator core 50.

As shown in fig. 4, the 1 st U-phase lead portion 62U is led out from the stator core 50 at a position radially inward of the led-out position of the 2 nd U-phase lead portion 63U. The 1 st V-phase lead portion 62V is led out from the stator core 50 at a position further inward in the radial direction of the stator core 50 than the led-out position of the 2 nd V-phase lead portion 63V. The 1 st W-phase lead portion 62W is led out from the stator core 50 at a position further inward in the radial direction of the stator core 50 than the led-out position of the 2 nd W-phase lead portion 63W.

In the present embodiment, the winding operation of each of the

electric wires

60u, 60v, 60w on the stator core 50 is performed from the outside toward the inside in the radial direction of the stator core 50. Therefore, the drawing position of the 2 nd U-phase lead portion 63U can be also referred to as the position at which winding of the U-phase coil portion 61U starts. The drawing position of the 1 st U-phase lead portion 62U can be also referred to as the position at which winding of the U-phase coil portion 61U is completed. The drawing position of the 2 nd V-phase lead portion 63V can be also referred to as the position at which winding of the V-phase coil portion 61V starts. The drawing position of the 1 st V-phase lead portion 62V can be also referred to as the position at which winding of the V-phase coil portion 61V ends. The drawing position of the 2 nd W-phase lead portion 63W can be also referred to as the position where winding of the W-phase coil portion 61W starts. The drawing position of the 1 st W-phase lead portion 62W can be also referred to as the position at which winding of the W-phase coil portion 61W is completed.

As described above, the U-phase coil portion 61U, the V-phase coil portion 61V, and the W-phase coil portion 61W are arranged offset from each other in the radial direction of the stator core 50. The 1 st U-phase lead portion 62U, the 1 st V-phase lead portion 62V, and the 1 st W-phase lead portion 62W are sequentially arranged from the outer side toward the inner side in the radial direction of the stator core 50 and are led out from the stator core 50. The 2 nd U-phase lead portion 63U, the 2 nd V-phase lead portion 63V, and the 2 nd W-phase lead portion 63W are sequentially arranged from the outer side toward the inner side in the radial direction of the stator core 50 and are led out from the stator core 50. In the present embodiment, the lead portions 62U, 62V, 62W, 63U, 63V, 63W in the radial direction of the stator core 50 are arranged in the order of the 2 nd U-phase lead portion 63U, the 2 nd V-phase lead portion 63V, the 1 st U-phase lead portion 62U, the 2 nd W-phase lead portion 63W, the 1 st V-phase lead portion 62V, and the 1 st W-phase lead portion 62W from the outside toward the inside.

As shown in fig. 2, the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are routed from the lead-out positions toward the connector 40. Specifically, the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are routed so as to extend in the circumferential direction of the stator core 50. Further, "wiring so as to extend in the circumferential direction of the stator core 50" also includes a state of extending in the circumferential direction of the stator core 50 while moving in the radial direction of the stator core 50. The

lead portions

62u, 62v, 62w, 63u, 63v, 63w are disposed so as to be directed clockwise toward the connector 40 when viewed from the 1 st end surface 50a side of the stator core 50. The

lead portions

62u, 62v, 62w, 63u, 63v, 63w are routed along the 1 st coil end 601.

In the circumferential direction of the stator core 50, the wiring regions of the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are referred to as wiring regions a. The wiring region a is a region extending along the circumferential direction of the stator core 50. The wiring region a is located at a part of the circumferential direction of the stator core 50. In the wiring region a, the lead positions of the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are as follows.

In the wiring region a, the extraction position of the 1 st U-phase lead portion 62U is located between the extraction positions of the connector 40 and the 2 nd U-phase lead portion 63U in the circumferential direction of the stator core 50. The 2 nd phase lead portion 63U is connected to the connector 40 at a position extending in the circumferential direction of the stator core 50 beyond the 1 st phase lead portion 62U. Further, "the extraction position of the 2 nd phase lead portion 63U across the 1 st phase lead portion 62U in the circumferential direction of the stator core 50" does not mean that the 2 nd phase lead portion 63U passes over the extraction position of the 1 st phase lead portion 62U in the axial direction of the stator core 50. The "extraction position of the 2 nd phase lead portion 63U across the 1 st phase lead portion 62U in the circumferential direction of the stator core 50" means an extraction position of the 2 nd phase lead portion 63U through the 1 st phase lead portion 62U at a position different from the extraction position of the 1 st phase lead portion 62U in the radial direction of the stator core 50.

In the wiring region a, the extraction position of the 1 st V-phase lead portion 62V is located between the connector 40 and the extraction position of the 2 nd V-phase lead portion 63V in the circumferential direction of the stator core 50. The 2 nd V-phase lead portion 63V is connected to the connector 40 at a position extending in the circumferential direction of the stator core 50 beyond the 1 st V-phase lead portion 62V. Further, "the extraction position of the 2 nd V phase lead portion 63V across the 1 st V phase lead portion 62V in the circumferential direction of the stator core 50" does not mean that the 2 nd V phase lead portion 63V passes above the extraction position of the 1 st V phase lead portion 62V in the axial direction of the stator core 50. The "extraction position of the 2 nd V phase lead portion 63V across the 1 st V phase lead portion 62V in the circumferential direction of the stator core 50" means an extraction position of the 2 nd V phase lead portion 63V through the 1 st V phase lead portion 62V at a position different from the extraction position of the 1 st V phase lead portion 62V in the radial direction of the stator core 50.

In the wiring region a, the extraction position of the 1W-phase lead portion 62W is located between the extraction positions of the connector 40 and the 2W-phase lead portion 63W in the circumferential direction of the stator core 50. The 2W-phase lead portion 63W is connected to the connector 40 at a position extending in the circumferential direction of the stator core 50 beyond the 1W-phase lead portion 62W. Further, "the extraction position of the 2W-phase lead portion 63W across the 1W-phase lead portion 62W in the circumferential direction of the stator core 50" does not mean an upper side of the extraction position of the 2W-phase lead portion 63W through the 1W-phase lead portion 62W in the axial direction of the stator core 50. The "extraction position of the 2 nd W phase lead portion 63W across the 1 st W phase lead portion 62W in the circumferential direction of the stator core 50" means an extraction position of the 2 nd W phase lead portion 63W through the 1 st W phase lead portion 62W at a position different from the extraction position of the 1 st W phase lead portion 62W in the radial direction of the stator core 50.

In the present embodiment, in the wiring region a, the extraction positions of the 1 st V-phase lead portion 62V, the 1 st W-phase lead portion 62W, the 2 nd V-phase lead portion 63V, the 1 st U-phase lead portion 62U, and the 2 nd W-phase lead portion 63W are sequentially arranged in the circumferential direction of the stator core 50 from the connector 40 toward the extraction position of the 2 nd U-phase lead portion 63U between the extraction positions of the connector 40 and the 2 nd U-phase lead portion 63U.

The 2 nd U-phase lead portion 63U is led out from a position farther from the connector 40 than the lead positions of the 2 nd V-phase lead portion 63V and the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. The 1 st V-phase lead portion 62V is drawn out in the circumferential direction of the stator core 50 at a position closer to the connector 40 than the drawing positions of the 1 st U-phase lead portion 62U, the 2 nd U-phase lead portion 63U, the 1 st W-phase lead portion 62W, and the 2 nd W-phase lead portion 63W. The 2 nd V-phase lead portion 63V and the 1 st U-phase lead portion 62U are led out between the lead-out position of the 1 st W-phase lead portion 62W and the lead-out position of the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50.

The 2 nd U-phase lead portion 63U is connected to the connector 40 through an inner side than the lead-out position of the 2 nd W-phase lead portion 63W in the radial direction of the stator core 50. The 2 nd V-phase lead portion 63V and the 1 st U-phase lead portion 62U are connected to the connector 40 through positions outside the lead-out position of the 1 st V-phase lead portion 62V in the radial direction of the stator core 50. The 2W-phase lead portion 63W is connected to the connector 40 through a portion outside the lead-out position of the 1W-phase lead portion 62W and inside the lead-out position of the 2V-phase lead portion 63V in the radial direction of the stator core 50.

The 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V are inserted into the insulating U-phase tube 71. Part of the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V are covered with the U-phase tube 71. The U-phase tube 71 extends along the circumferential direction of the stator core 50 together with the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V. The 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V are inserted into the U-phase terminal accommodating chamber 43U through the opening of the U-phase terminal accommodating chamber 43U in a state of being inserted into the U-phase tube 71. The U-phase tube 71 is connected to the connector 40 together with the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V.

The distal ends of the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V are not covered with the U-phase tube 71. Further, the insulating film is removed at the distal ends of the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V, and the wires are exposed. The distal ends of the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V are connected to the U-phase terminal 41U. That is, the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V pass through the U-phase tube 71 and are connected to the U-phase terminal 41U. The U-phase terminal 41U electrically connects the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V. The U-phase terminal 41U electrically connects the 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V to the U-phase conductive member 31U.

The 2 nd W-phase lead portion 63W and the 1 st V-phase lead portion 62V are inserted into the insulating V-phase tube 72. A part of the 2 nd W-phase lead portion 63W and the 1 st V-phase lead portion 62V are covered with the V-phase tube 72. The V-phase tube 72 extends along the circumferential direction of the stator core 50 together with the 2W-phase lead portion 63W and the 1V-phase lead portion 62V. The 2W-phase lead portion 63W and the 1V-phase lead portion 62V are inserted into the V-phase terminal accommodation chamber 43V through the opening of the V-phase terminal accommodation chamber 43V in a state of being inserted into the V-phase pipe 72. The V-phase tube 72 is connected to the connector 40 together with the 2W-phase lead portion 63W and the 1V-phase lead portion 62V.

The distal ends of the 2W-phase lead portion 63W and the 1V-phase lead portion 62V are not covered with the V-phase tube 72. Further, the insulating film is removed at the distal ends of the 2W-phase lead portion 63W and the 1V-phase lead portion 62V to expose the wires. The tip ends of the 2W-phase lead portion 63W and the 1V-phase lead portion 62V are connected to the V-phase terminal 41V. That is, the 2W-phase lead portion 63W and the 1V-phase lead portion 62V pass through the V-phase tube 72 and are connected to the V-phase terminal 41V. The V-phase terminal 41V electrically connects the 2W-phase lead portion 63W and the 1V-phase lead portion 62V. The V-phase terminal 41V electrically connects the 2W-phase lead portion 63W and the 1V-phase lead portion 62V to the V-phase conductive member 31V.

The 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are inserted into the insulating W-phase tube 73. Part of the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are covered with the W-phase tube 73. The W-phase pipe 73 extends along the circumferential direction of the stator core 50 together with the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W. The 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are inserted into the W-phase terminal accommodating chamber 43W through the opening of the W-phase terminal accommodating chamber 43W in a state of being inserted into the W-phase pipe 73. The W-phase tube 73 is connected to the connector 40 together with the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W.

The distal ends of the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are not covered with the W-phase tube 73. Further, the insulating film is removed at the distal ends of the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W to expose the wires. The distal end portions of the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are connected to the W-phase terminal 41W. That is, the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W pass through the W-phase tube 73 and are connected to the W-phase terminal 41W. The W-phase terminal 41W electrically connects the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W. The W-phase terminal 41W electrically connects the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W to the W-phase conductive member 31W.

Thus, the U-phase electric wire 60U, the V-phase electric wire 60V, and the W-phase electric wire 60W are delta-connected via the U-phase terminal 41U, the V-phase terminal 41V, and the W-phase terminal 41W. The 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V connected to the U-phase terminal 41U, the 2 nd W-phase lead portion 63W and the 1 st V-phase lead portion 62V connected to the V-phase terminal 41V, and the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W connected to the W-phase terminal 41W are arranged in this order from the outer side toward the inner side in the radial direction of the stator core 50. Thus, the U-phase tube 71, the V-phase tube 72, and the W-phase tube 73 are also arranged in this order from the outer side toward the inner side in the radial direction of the stator core 50.

The

lead portions

62u, 62v, 62w, 63u, 63v, 63w and the

tubes

71, 72, 73 are bound to the 1 st coil end 601 by the fixing member S so as not to float from the 1 st coil end 601. The fixing member S is, for example, a wire. In the present embodiment, the fixing member S is provided in a range from the extraction position of the 2 nd U-phase lead portion 63U to the position where the

respective pipes

71, 72, 73 are aligned in the radial direction of the stator core 50 in the circumferential direction of the stator core 50.

As shown in fig. 2, each of the

pipes

71, 72, 73 and the cluster block 42 has a portion located outside the tip end surface 52a of the tooth 52 and a portion located inside the tip end surface 52a of the tooth 52 in the radial direction of the stator core 50.

As shown in fig. 1, a part of the cluster block 42 in the axial direction of the rotary shaft 16 is accommodated in the accommodating recess 20. The portions of the

tubes

71, 72, 73 and the cluster block 42 that are not accommodated in the accommodating recess 20 overlap the protrusions 23 in the axial direction of the rotary shaft 16.

Therefore, when the relief portion 23d is not provided in the projection 23, the portions of the

tubes

71, 72, 73 and the cluster block 42 located radially inward of the tip end surface 52a of the tooth 52 interfere with the projection 23. However, in the present embodiment, since the relief portion 23d is provided in the projection 23, interference between the projections 23 and the portions of the

tubes

71, 72, 73 and the cluster block 42 located radially inward of the tip end surface 52a of the tooth 52 is avoided.

The operation and effects of the embodiment will be described.

(1) The 1 st U-phase lead portion 62U, the 1 st V-phase lead portion 62V, and the 1 st W-phase lead portion 62W are arranged in this order from the outside toward the inside in the radial direction of the stator core 50. The 2 nd U-phase lead portion 63U, the 2 nd V-phase lead portion 63V, and the 2 nd W-phase lead portion 63W are arranged in this order from the outside toward the inside in the radial direction of the stator core 50. At this time, for example, it is conceivable that the 2 nd U-phase lead portion 63U is led out from a position closer to the connector 40 than the lead positions of the 2 nd V-phase lead portion 63V and the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. In this case, when the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are electrically connected, the 2 nd U-phase lead portion 63U intersects with the 2 nd W-phase lead portion 63W, for example.

In contrast, in the present embodiment, the 2 nd U-phase lead portion 63U is led out from a position farther from the connector 40 than the lead positions of the 2 nd V-phase lead portion 63V and the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. The 2 nd U-phase lead portion 63U is electrically connected to the 1 st W-phase lead portion 62W through an inner side of the lead-out position of the 2 nd W-phase lead portion 63W in the radial direction of the stator core 50. Thus, when the 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W are electrically connected, the 2 nd U-phase lead portion 63U and the 2 nd W-phase lead portion 63W can be prevented from intersecting. That is, when the U-phase electric wire 60U, the V-phase electric wire 60V, and the W-phase electric wire 60W are connected in a delta configuration, the lead portions 62U, 62V, 62W, 63U, 63V, 63W can be prevented from crossing each other. This can avoid an increase in the size of the electric motor 18 in the axial direction of the stator core 50. By avoiding an increase in the size of the electric motor 18 in the axial direction, the overall size of the electric compressor 10 can be suppressed.

(2) Since the

lead portions

62u, 62v, 62w, 63u, 63v, 63w are prevented from crossing each other, the problem of deterioration of insulation due to interference between the crossing portions of the leads and the bottom wall 12a when the electric motor 18 is housed in the motor case 12 can be avoided.

(3) The 1 st V-phase lead portion 62V is drawn out in the circumferential direction of the stator core 50 at a position closer to the connector 40 than the drawing positions of the 1 st U-phase lead portion 62U, the 2 nd U-phase lead portion 63U, the 1 st W-phase lead portion 62W, and the 2 nd W-phase lead portion 63W. The 2 nd V-phase lead portion 63V and the 1 st U-phase lead portion 62U are led out between the lead-out position of the 1 st W-phase lead portion 62W and the lead-out position of the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. Therefore, the difference in length between the electric wires 60U, 60V, and 60W can be reduced as compared with the case where the 2 nd V-phase lead portion 63V and the 1 st U-phase lead portion 62U are not drawn between the drawing position of the 1 st W-phase lead portion 62W and the drawing position of the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. This can reduce the difference in resistance between the

wires

60u, 60v, and 60 w.

(4) The 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V pass through the U-phase tube 71 and are connected to the U-phase terminal 41U. The 2W-phase lead portion 63W and the 1V-phase lead portion 62V pass through the V-phase tube 72 and are connected to the V-phase terminal 41V. The 2 nd U-phase lead portion 63U and the 1 st W-phase lead portion 62W pass through the W-phase tube 73 and are connected to the W-phase terminal 41W.

In this way, the 2 lead portions are electrically connected via the terminals, and the connection work is easier than the case where the 2 lead portions are directly connected without via the terminals. In addition, the 2 lead portions are inserted into the tube, and are less likely to be scattered than when not inserted into the tube. This facilitates handling of the lead portion. In addition, by arranging the tubes in the radial direction of the stator core 50, the respective leads from the lead-out position to the connector 40 can be suppressed from crossing.

(5) The 1 st phase lead portion 62U is led out from the inside in the radial direction of the stator core 50 than the lead position of the 2 nd phase lead portion 63U. The 1 st V-phase lead portion 62V is led out from the inside in the radial direction of the stator core 50 than the lead-out position of the 2 nd V-phase lead portion 63V. The 1 st W-phase lead portion 62W is led out from the inside in the radial direction of the stator core 50 than the lead-out position of the 2 nd W-phase lead portion 63W. In this case, the wiring work of the

lead portions

62u, 62v, 62w, 63u, 63v, 63w becomes easy.

(6) The 2W-phase lead portion 63W is led out from the outside in the radial direction of the stator core 50 than the 1W-phase lead portion 62W. Therefore, compared with the case where the 2W-phase lead portion 63W is led out from the inner side in the radial direction than the lead-out position of the 1W-phase lead portion 62W, the space through which the 2U-phase lead portion 63U passes can be made wider at the inner side than the lead-out position of the 2W-phase lead portion 63W. Thus, the 2 nd U-phase lead portion 63U does not easily protrude inward from the tip end surface 52a of the tooth 52.

(7) In order to allow the lead portions to cross and avoid interference between the crossed portions and the bottom wall 12a, for example, it is conceivable to form a recess in the inner surface 121 of the bottom wall 12a at a position corresponding to the crossed portions. However, if the recess is formed, the rigidity of the motor housing 12 decreases, or it becomes difficult to manufacture the motor housing 12. In contrast, by wiring the

lead portions

62u, 62v, 62w, 63u, 63v, 63w as in the present embodiment, the occurrence of the intersecting portions is avoided, and the shape of the motor case 12 is not required to be changed. This can prevent the

electric wires

60u, 60v, and 60w from interfering with the bottom wall 12a without deteriorating the rigidity of the motor case 12 or impairing the ease of manufacturing the motor case 12.

Further, a receiving recess 20 for receiving the bundling block 42 is formed in the bottom wall 12a of the motor housing 12. The housing recess 20 will be described for the sake of caution without significantly deteriorating the rigidity of the motor case 12. The bottom wall 12a is formed with a through hole 21 for communicating the inside of the motor case 12 with the housing space S1. Therefore, the bottom wall 12a does not require high rigidity around the through hole 21. The accommodating recess 20 is formed such that the through hole 21 is located at the bottom surface of the accommodating recess 20. That is, the accommodating recess 20 is formed in a portion of the bottom wall 12a where high rigidity is not required. Therefore, the housing recess 20 does not significantly reduce the rigidity of the motor housing 12.

The present embodiment can be modified as follows. The present embodiment and the modification can be combined with each other within a range that is not technically contradictory.

The o 1 st V-phase lead portion 62V may not be drawn out in the circumferential direction of the stator core 50 at a position closer to the connector 40 than the drawing positions of the 1 st U-phase lead portion 62U and the 1 st W-phase lead portion 62W. For example, the 1 st V-phase lead portion 62V may be drawn between the drawing position of the 1 st U-phase lead portion 62U and the drawing position of the 1 st W-phase lead portion 62W in the circumferential direction of the stator core 50. For example, the 1 st V-phase lead portion 62V may be led out in the circumferential direction of the stator core 50 at a position farther from the connector 40 than the led-out positions of the 1 st U-phase lead portion 62U and the 1 st W-phase lead portion 62W.

The o 2 nd and 1 st U-phase lead portions 63V and 62U may not be drawn between the drawing position of the 1 st W-phase lead portion 62W and the drawing position of the 2 nd W-phase lead portion 63W in the circumferential direction of the stator core 50. For example, the 2 nd V phase lead portion 63V may be led out between the lead-out position of the 1 st V phase lead portion 62V and the lead-out position of the 1 st W phase lead portion 62W in the circumferential direction of the stator core 50. For example, the 1 st phase lead portion 62U may be drawn out between the drawing position of the 2 nd phase lead portion 63U and the drawing position of the 2W phase lead portion 63W in the circumferential direction of the stator core 50.

The 1 st U-phase lead portion 62U may be led out from the outer side of the 2 nd U-phase lead portion 63U in the radial direction of the stator core 50. The 1 st V-phase lead portion 62V may be led out from the outside of the 2 nd V-phase lead portion 63V in the radial direction of the stator core 50. The 1 st W-phase lead portion 62W may be led out from the outside of the 2 nd W-phase lead portion 63W in the radial direction of the stator core 50.

The winding operation of the

electric wires

60u, 60v, and 60w with respect to the stator core 50 may be performed from the inside toward the outside in the radial direction of the stator core 50. In this case, the lead position of the 1 st U-phase lead portion 62U is the position at which winding of the U-phase coil portion 61U starts. The drawing position of the 2 nd U-phase lead portion 63U is a position where winding of the U-phase coil portion 61U ends. The lead position of the 1 st V-phase lead portion 62V is the position at which winding of the V-phase coil portion 61V starts. The position of the 2 nd V-phase lead portion 63V at which the winding of the V-phase coil portion 61V ends. The lead position of the 1 st W-phase lead portion 62W is the position at which winding of the W-phase coil portion 61W starts. The drawing position of the 2 nd W-phase lead portion 63W is a position where winding of the W-phase coil portion 61W ends.

The

electric wires

60u, 60v, 60w constituting the

coil portions

61u, 61v, 61w may be inserted into the teeth 52 after being wound in advance, instead of being wound into the teeth 52.

The

electric wires

60u, 60v, 60w are not limited to the wave winding as long as they are wound in a distributed manner. The

wires

60u, 60v, 60w may be wound concentrically or overlapped, for example.

The o 1 st U-phase lead portion 62U and the 2 nd V-phase lead portion 63V may be electrically connected by direct connection not via the U-phase terminal 41U. The 2W-phase lead portion 63W and the 1V-phase lead portion 62V may be electrically connected by direct connection not via the V-phase terminal 41V. The 1W-phase lead portion 62W and the 2U-phase lead portion 63U may be electrically connected by direct connection not via the W-phase terminal 41W.

The fixing member S may be omitted.

The o fixing member S may be a nonconductive member or may be a wire.

The compression portion 17 is not limited to the scroll type, and may be of any type such as a piston type or a vane type.

Claims

1. An electric compressor, comprising:

a compression unit configured to compress a fluid;

an electric motor including a stator having a cylindrical stator core, and coils formed by triangular wire winding in a distributed manner, and a U-phase wire, a V-phase wire, and a W-phase wire, and configured to drive the compression unit;

a motor driving circuit configured to drive the electric motor; a kind of electronic device with high-pressure air-conditioning system

A connector electrically connecting the electric motor and the motor driving circuit,

the connector is provided in such a manner as to oppose a coil end of the coil located at one end in an axial direction of the stator core,

the U-phase wire, the V-phase wire, and the W-phase wire each have a 1 st lead provided on one side and a 2 nd lead provided on the other side, and are electrically connected to the connector via the 1 st lead and the corresponding 2 nd lead,

the first lead of the U-phase wire, the V-phase wire, and the W-phase wire are arranged in the order of U-phase, V-phase, and W-phase from the outer side toward the inner side in the radial direction of the stator core and led out from the stator core,

the U-phase wire, the V-phase wire, and the 2 nd lead of the W-phase wire are arranged in the order of U-phase, V-phase, and W-phase from the outer side toward the inner side in the radial direction and are led out from the stator core, are connected to the connector across the lead-out position of the 1 st lead of the same phase in the circumferential direction of the stator core,

the 2 nd lead of the U-phase wire is led out from a position distant from the connector in the circumferential direction from a lead-out position of each of the 2 nd leads of the V-phase wire and the W-phase wire, and is electrically connected to the 1 st lead of the W-phase wire through an inner side of the lead-out position of the 2 nd lead of the W-phase wire in the radial direction.

2. The motor-driven compressor of claim 1,

the 1 st lead of the V-phase electric wire is led out in the circumferential direction at a position closer to the connector than the 1 st lead and the 2 nd lead of the U-phase electric wire and the W-phase electric wire are,

the 1 st lead of the U-phase electric wire and the 2 nd lead of the V-phase electric wire are led out in the circumferential direction between lead-out positions of the 1 st lead and the 2 nd lead of the W-phase electric wire.

3. The motor-driven compressor according to claim 1 or 2,

the connector has a U-phase terminal, a V-phase terminal and a W-phase terminal,

the U-phase terminal, the V-phase terminal and the W-phase terminal are arranged in the order of U-phase, V-phase and W-phase from the outer side to the inner side in the radial direction,

an insulating U-phase tube, V-phase tube and W-phase tube extending along the circumferential direction and connected to the connector,

in the radial direction, the U-phase tube, the V-phase tube and the W-phase tube are arranged in the order of U-phase, V-phase and W-phase from the outer side to the inner side in the radial direction,

the 1 st lead of the U-phase wire and the 2 nd lead of the V-phase wire pass through the U-phase tube and are connected with the U-phase terminal,

The 1 st lead of the V-phase wire and the 2 nd lead of the W-phase wire pass through the V-phase tube and are connected to the V-phase terminal,

the 1 st lead of the W-phase wire and the 2 nd lead of the U-phase wire pass through the W-phase tube and are connected to the W-phase terminal.

4. The motor-driven compressor according to any one of claim 1 to 3,

the 1 st lead of the U-phase electric wire is led out from the stator core at the inner side in the radial direction than the 2 nd lead of the U-phase electric wire,

the 1 st lead of the V-phase electric wire is led out from the stator core at the inner side in the radial direction than the 2 nd lead of the V-phase electric wire,

the 1 st lead of the W-phase wire is led out from the stator core at an inner side in the radial direction than the 2 nd lead of the W-phase wire.