JP2012095480A - Stator for electric rotating machine and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a temperature detection element, easily adapt the mounting position to mounting to a different position of another vehicle and highly accurately detect a temperature of a stator winding inside a stator.SOLUTION: A stator includes: an annular stator core 30 having a plurality of slots 31 in the circumferential direction; and a stator coil 4 comprising a plurality of conductors inserted to the slots 31 and wound around the stator core 30. The stator core 30 around which the stator coil 4 is wound is fixed to a cylindrical outer cylinder 5 in a fitted manner. A recess 600a opened also on the slot 31 side is formed on an annular face of the stator core 30, and a temperature detection element 500 having a temperature measurement face 502a for detecting a temperature is fitted to the recess 600a with the temperature measurement face 502a projecting to the slots 31.

Description

  The present invention relates to a stator for a rotating electrical machine provided with a temperature detection element for detecting the temperature of a stator winding, and a method for manufacturing the same.

  Conventionally, in a rotating electrical machine that doubles as an electric motor and a generator or is used exclusively as an electric motor or an electric generator, when current flows through the stator winding of the stator, heat is generated in the winding, and the winding and fixing The child's temperature rises. When the temperature of the winding and the stator rises above a predetermined temperature, for example, a part of the components constituting the stator may be damaged by heat. Therefore, as in the mechanism described in Patent Document 1, for example, it is known to install a temperature detection element inside the stator core and detect the winding temperature inside the stator. When the temperature of the stator winding rises and the detection temperature of the temperature detecting element reaches a predetermined temperature, for example, in an electric motor, the current supplied to the stator winding is cut off to prevent the stator winding from rising in temperature. ing.

Japanese Utility Model Publication No. 6-63837

  By the way, when deploying the rotating electrical machine to different vehicles, the cooling method of the rotating electrical machine and the angle and direction in which the rotating electrical machine is mounted are changed. By changing these, the flow of the cooling medium and the heat generation of each part are changed. The degree of heat dissipation changes. Therefore, the part where the temperature of the rotating electrical machine is measured must be changed along with the change.

  However, in the mechanism of the above-mentioned Patent Document 1, the position of the temperature detection element installed inside the stator core is determined by the outer cylinder that inserts and fits the stator into the cylindrical member. In general, a stator core of a rotating electrical machine is made of a laminated steel plate, and thus is made by stamping with a press. For this reason, when changing the temperature detection element mounting position, it is necessary to recreate the press die used for the stator each time it is changed. There is a problem that man-hours are required.

  Also, when measuring the temperature of the winding inside the stator core, simply filling the temperature detection element may cause the temperature measurement part of the temperature detection element to come into contact with the core having a large heat capacity, or cooling the cooling liquid or the like. It is conceivable that the medium comes into contact with the temperature measurement unit of the temperature detection element. As a result, there arises a problem that the temperature cannot be measured accurately.

  Furthermore, the temperature measuring part of the temperature detecting element needs to be in close contact with the winding. For this reason, simply burying the temperature detecting element to be measured inside the slot makes it difficult to bring the winding and the temperature measuring unit into close contact with each other, and the temperature of the winding cannot be measured accurately. is there.

  The present invention has been made in view of such circumstances, and is equipped with a temperature detection element, and this mounting position can be easily adapted to attachment to a different position on another vehicle. It is an object of the present invention to provide a stator for a rotating electrical machine that can detect the temperature of the stator winding with high accuracy and a method for manufacturing the same.

  In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that an annular stator core having a plurality of slots in the circumferential direction, and a plurality of coils inserted through the slots of the stator core and wound. In a stator of a rotating electrical machine having a stator winding with a conductor of at least one, a concave portion that opens to the slot side is formed in an annular surface that circulates in the annular shape of the stator core, and the concave portion A temperature detecting element having a temperature measuring surface for detecting temperature is fitted in the slot with the temperature measuring surface facing.

  According to this configuration, the temperature detecting element can be easily fitted into the concave portion of the stator core, and the temperature measuring surface of the fitted temperature detecting element is in the state of being in the slot. The temperature of the stator winding inside can be detected properly. Further, since the temperature detection element is fitted in the concave portion of the stator core, the temperature detection element can be fixed without using an adhesive or a fixing member, thereby reducing the cost. .

  The invention according to claim 2 is characterized in that the temperature measurement surface is located in the slot.

  According to this configuration, when the temperature detection element is fitted in the recess, the temperature measurement surface of the temperature detection element protrudes into the slot. Therefore, when the stator winding is accommodated in the slot, The temperature measurement surface properly abuts the winding, whereby the temperature of the stator winding can be detected with high accuracy.

  The invention described in claim 3 is characterized in that the temperature detecting element is bonded to the concave portion with an adhesive.

  According to this configuration, the temperature detection element can be firmly fixed to the stator core, so that the temperature detection element cannot be removed and temperature detection cannot be performed.

  According to a fourth aspect of the present invention, in the stator core around which the stator winding is wound, the temperature detection of the stator winding in which the temperature detection element is predetermined in a vehicle on which the rotating electrical machine is mounted. It is characterized by being inserted into a cylindrical outer tube and fixed in a position.

  According to this configuration, the relative position between the stator core and the outer cylinder can be determined so that the temperature detection element is disposed at an appropriate temperature detection position for each vehicle. Therefore, when the rotating electrical machine is mounted on the vehicle, it is only necessary to change the relative position between the stator core and the outer cylinder so that the temperature detection element is at an appropriate detection position in the vehicle.

  According to a fifth aspect of the present invention, the stator core is formed of a split core that is divided into at least two or more, and when the split surfaces abut on the split surfaces of the split core, A partial recess is formed.

  According to this configuration, when connecting the split cores when forming the stator core, if the temperature detection elements are sandwiched between the partial recesses formed on the split surface, the split cores are connected. The temperature detecting element is in a fitted state in a concave part formed by combining a part of the concave parts. Therefore, the temperature detection element can be easily fixed to the stator core.

  According to a sixth aspect of the present invention, the temperature detecting element has elasticity, and the dimension of the temperature detecting element having elasticity is such that the circumferential width in a state in which the temperature detecting element is attached to the concave portion is It is characterized by being wider than the circumferential width of the recess.

  According to this configuration, since the circumferential width of the elastic temperature detection element is wider than the circumferential width of the recess, if the temperature detection element is contracted and fitted into the recess, the temperature detection element is moved by the stator core. It can be firmly fixed.

  According to the seventh aspect of the present invention, a radial length corresponding to the annular radial direction in the recess is shorter than a radial length of the temperature detection element in a state where the temperature detection element is attached to the recess. It is characterized by becoming.

  According to this configuration, when the temperature detection element is fitted into the recess, the temperature measurement surface of the temperature detection element protrudes toward the slot side. For this reason, when the stator winding is housed in the slot, the temperature measurement surface properly contacts the stator winding, so that the temperature of the stator winding can be detected with high accuracy.

  According to an eighth aspect of the present invention, the temperature detecting element covers a temperature measuring unit having the temperature measuring surface and a portion other than the temperature measuring surface, and a low thermal conductivity member having a lower thermal conductivity than the stator core. It is characterized by comprising.

  According to this configuration, since the temperature detection element other than the temperature measurement surface is covered with the low thermal conductivity member, it is difficult for heat to be transmitted between the stator core and the temperature measurement unit, and the measurement heat of the temperature measurement unit is reduced. This makes it difficult to escape to the stator core, whereby the heat generation temperature of the stator winding on the temperature measurement surface can be measured more accurately.

  The invention described in claim 9 is characterized in that the stator winding uses a square wire having a square cross section.

  According to this configuration, the contact area of the stator winding with the temperature measurement surface of the temperature detection element can be increased, so that more accurate temperature measurement of the stator winding can be performed.

  The invention described in claim 10 is characterized in that the recess and the temperature detection element are covered with a fixing member that solidifies after melting in a state where the temperature detection element is fitted in the recess.

  According to this configuration, when the temperature detection element is fitted and fixed in the recess, the temperature detection element can be easily fixed to the recess since it is only necessary to wait for solidification after being immersed in the molten fixing member.

  The invention described in claim 11 is characterized in that a low thermal conductivity member having a lower thermal conductivity than the stator core is used as the fixing member.

  According to this configuration, since the temperature detection element is covered with a member having a lower thermal conductivity than the stator core, heat is less likely to be transferred between the stator core and the temperature measurement unit, thereby Since the measurement heat of the measurement part is difficult to escape to the stator core, the heat generation temperature of the stator winding on the temperature measurement surface can be measured more accurately.

  The invention described in claim 12 is characterized in that the low thermal conductivity member or the fixing member is a resin member.

  According to this configuration, the low thermal conductivity member or the fixing member can be easily formed.

  The invention according to claim 13 is characterized in that the concave portion is opened toward the outer side in the axial direction on at least one end surface of the stator core in the axial direction.

  According to this structure, since the recessed part opened toward the outer side of the axial direction was formed in the end surface of the axial direction of a stator core, the opening of this recessed part is a state visible from the outer side. Therefore, it becomes easy to fit the temperature detection element into the recess.

  The invention according to claim 14 is characterized in that the concave portion is a through-hole penetrating through the stator core in the radial direction from the slot side to the outer peripheral side of the stator core.

  According to this configuration, since the temperature detection element can be fitted and fixed in the recess of the stator core from the opening on the slot side toward the outer peripheral side, the temperature detection element can be easily fitted in the recess. Become. Further, since the temperature detecting element can be easily fitted and fixed in the recess without using an adhesive or a fixing member, the cost can be further reduced.

  According to a fifteenth aspect of the present invention, the concave portion is a fan-shaped concave portion whose inner circumferential side is narrower in the circumferential direction than the annular outer peripheral side, and the temperature detecting element is fitted in the fan-shaped concave portion. It has a fan-shaped shape that is possible.

  According to this configuration, if a fan-shaped temperature detection element is fitted into the fan-shaped recess, the temperature detection element can be easily fixed to the stator core without using an adhesive or a fixing member.

  According to a sixteenth aspect of the present invention, the stator core is formed of a split core that is divided into at least two or more, and the annular surface is formed when the split surfaces abut against the split surface of the split core. A semi-sector-shaped recess that is a sector-shaped recess having a narrower circumferential dimension on the inner periphery side than the outer periphery side is formed.

  According to this configuration, when connecting the two divided cores, if the temperature detecting element is sandwiched between the half fan-shaped recesses of both divided cores, if the temperature detecting element is elastic, the half-fan recessed portion Can be fitted and fixed in the fan-shaped concave part. Therefore, the temperature detection element can be firmly fixed by the stator core without using an adhesive or a fixing member.

  In the invention according to claim 17, the concave portion is a T-shaped concave portion extending from the center of the extended portion to the inside of the slot in the radial direction by extending the annular outer peripheral side by a predetermined length in the circumferential direction, The temperature detection element has a T-shape that can be fitted into the T-shaped recess.

  According to this configuration, if the T-shaped temperature detection element is fitted into the T-shaped recess, the temperature detection element can be easily fixed to the stator core without using an adhesive or a fixing member.

  According to an eighteenth aspect of the present invention, the stator core is formed of a split core that is divided into at least two or more, and the annular surface when the split surfaces abut against the split surface of the split core. A semi-T-shaped recess that is a T-shaped recess extending from the center of the extended portion to the inside of the slot in the radial direction is formed.

  According to this configuration, when connecting the two divided cores, if the temperature detecting element is sandwiched between the half T-shaped recesses of both the split cores, the half T-shaped recessed part can be used as long as it is an elastic temperature detecting element. Can be fitted and fixed in the T-shaped recess where the two are attached. Therefore, the temperature detection element can be firmly fixed by the stator core without using an adhesive or a fixing member.

  According to a nineteenth aspect of the present invention, there is provided an insulating member between the temperature detecting element and the stator winding that does not cause dielectric breakdown due to a voltage applied to the stator winding.

  According to this structure, the insulation between a temperature detection element and a stator winding | coil can be improved, and the temperature measurement by a temperature detection element can be performed appropriately.

  The invention according to claim 20 is characterized in that the insulating member is in direct contact with the temperature detecting element and the stator winding.

  According to this configuration, since the temperature detecting element is in direct contact with the stator winding via the high resistance member, the temperature of the stator winding can be measured more appropriately.

  According to a twenty-first aspect of the present invention, there are provided a first step and a plurality of first steps for forming a recess opening on the slot side on an annular surface of the annular stator core having a plurality of slots in the circumferential direction. The stator winding formed by the first conductor is assembled into the stator core in which the recess is formed in the first step so that the conductor of the stator winding is inserted into the slot of the stator core. A temperature detecting element having a temperature measuring surface for detecting temperature in a recess of the stator core in which the stator winding is incorporated in two steps and the temperature measuring surface in the slot of the stator core; A stator core in which the temperature detection element is fitted in the recess in the third step, and the temperature detection element is determined in advance in a vehicle on which the rotating electrical machine is mounted. Said fixed A state in which a temperature detecting position of the winding, characterized in that inserted into an outer cylinder and a fourth step of fitting and fixing.

  According to this method, a stator core having a temperature detection element fitted in the recess is formed, and this stator core is inserted into an outer cylinder of another member and fixed. In this case, the temperature detection element However, the relative position between the stator core and the outer cylinder is determined and fitted and fixed so as to be a predetermined detection position of the stator winding temperature in the vehicle to be mounted. That is, since the detection position of the temperature detection element can be determined simply by changing the relative position between the stator core and the outer cylinder, when the rotating electrical machine is mounted on another type of vehicle, the temperature detection element in that vehicle The position of the temperature detecting element of the stator can be easily adjusted to the appropriate temperature detecting position.

1 is an axial sectional view schematically showing a configuration of a rotating electrical machine according to a first embodiment of the present invention. It is a perspective view which shows the structure of the stator of the rotary electric machine which concerns on this embodiment. It is a top view which shows the structure of a stator core. It is a top view of the split core which comprises a stator core. It is the top view which saw through a part of temperature detection element. It is sectional drawing of the coil | winding which comprises a stator coil. It is a figure which shows the connection of a stator coil. It is a perspective view of the winding body used as a stator coil. It is an expanded view of a stator coil, and is a top view of a built-in body. It is a perspective view of an assembly. It is a perspective view of an outer cylinder. (A) The top view which shows the connection state of the split core which comprises a stator core, and the dimension of the recessed part of a split core, and a temperature detection element, (b) shows the split core and temperature detection element in a stator core shown in FIG. It is sectional drawing at the time of cut | disconnecting to radial direction. The structure of the stator core which concerns on 1st Embodiment of this invention is shown, (a) is a perspective view of a stator core, (b) looks at the cross section of the cross-section position S shown with a broken line in (a) from the arrow Y1 direction. It is sectional drawing of the division | segmentation core and temperature detection element part in a stator core at the time. It is sectional drawing when the split core 32-1 and the temperature detection element 500 in the stator core of the rotary electric machine which concern on 3rd Embodiment of this invention are cut | disconnected in radial direction. It is sectional drawing when the split core and temperature detection element in the stator core of the rotary electric machine which concern on 4th Embodiment of this invention are cut | disconnected in radial direction. It is a fragmentary top view which shows the principal part of the stator core of the rotary electric machine which concerns on 5th Embodiment of this invention. It is a fragmentary top view which shows the principal part of the stator core of the rotary electric machine which concerns on 6th Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. However, parts corresponding to each other in all the drawings in this specification are denoted by the same reference numerals, and description of the overlapping parts will be omitted as appropriate.

(First embodiment)
FIG. 1 is an axial cross-sectional view schematically showing a configuration of a rotating electrical machine according to an embodiment of the present invention.

  A rotating electrical machine 1 shown in FIG. 1 is rotatably supported by a housing 10 in which a pair of substantially bottomed cylindrical housing members 100 and 101 are joined to each other through openings and bearings 110 and 111. The rotating shaft 20, the rotor 2 fixed to the rotating shaft 20, the stator 3 fixed to the housing 10 at a position surrounding the rotor 2 inside the housing 10, and the temperature attached to the stator 3. The detection element 500 is provided.

  The rotor 2 is formed with a plurality of magnetic poles that are alternately different in the circumferential direction by permanent magnets on the outer peripheral side facing the inner peripheral side of the stator 3. The number of magnetic poles of the rotor 2 is not limited because it varies depending on the rotating electric machine. In this embodiment, it is assumed that an 8-pole rotor (N pole: 4, S pole: 4) is used. As shown in FIG. 2, the stator 3 is extrapolated to the stator core 30, a three-phase stator coil (stator winding) 4 formed from a plurality of phase windings, and the stator core 30. The outer cylinder 5 is provided.

  As shown in FIG. 3, the stator core 30 has an annular shape in which a plurality of slots 31 are formed on the inner periphery. The plurality of slots 31 are formed such that the depth direction thereof coincides with the radial direction. The number of slots 31 formed in the stator core 30 is formed at a ratio of two per one phase of the stator coil 4 with respect to the number of magnetic poles of the rotor 2. In this embodiment, since 8 × 3 × 2 = 48, the number of slots is 48.

  Further, the stator core 30 is a combination of the split cores 32 shown in FIG. 4A and the split cores 32-1 shown in FIG. 4B, and is linked in the circumferential direction by a predetermined number (24 in this embodiment). Is formed. The split core 32 has a shape in which one slot 31 is defined and one slot 31 is defined between the adjacent split cores 32 in the circumferential direction. Specifically, the split core 32 has a pair of teeth portions 320 that extend radially inward, and a back core portion 321 that connects the teeth portions 320 radially outward. The split core 32-1 The circumferential end face (divided surface) further has a half-recessed portion 600h for attaching the temperature detecting element.

  The split core 32 and the split core 32-1 constituting the stator core 30 are formed by stacking electromagnetic steel plates, and an insulating thin film is disposed between the stacked electromagnetic steel plates. In addition, you may form the split core 32 and the split core 32-1 not only from the laminated body of this electromagnetic steel plate but using a conventionally well-known metal thin plate and an insulating thin film. Moreover, the shape of the stator core 30 applicable to this embodiment may not be restricted to what was shown in FIG.3 and FIG.4.

  As shown in FIG. 5, the temperature detection element 500 includes a temperature measurement unit 502 that measures temperature, a temperature detection element output line 506 extending from the temperature measurement unit 502, and the temperature measurement unit 502 exposing the temperature measurement surface 502 a. And a part of the temperature detection element output line 506, and a low thermal conductivity member 504 having a thermal conductivity lower than that of the stator core 30. The low thermal conductivity member 504 is a resin member, and preferably has elasticity.

  The stator coil 4 is formed by winding a plurality of windings 40 by a predetermined winding method. As shown in FIG. 6, the winding 40 constituting the stator coil 4 has a square cross-sectional shape, a copper conductor 41, and an inner layer 420 and an outer layer that cover the outer periphery of the conductor 41 and insulate the conductor 41. And an insulating film 42 made of 421. As described above, since the insulating film 42 composed of the inner layer 420 and the outer layer 421 is thick, it is not necessary to sandwich insulating paper or the like between the windings 40 in order to insulate the windings 40 from each other. Insulating paper may be provided between the 40 or between the stator core 30 and the stator coil 4. The winding 40 may have a round cross section.

  Further, as shown in FIG. 7, each of the stator coils 4 is formed by two three-phase windings (U1, U2, V1, V2, W1, W2). As shown in FIG. 8, the stator coil 4 is a winding body 48 formed by winding a built-in body 47 (see FIG. 9) in which a plurality of windings 40 are incorporated in a predetermined shape. The winding 40 constituting the stator coil 4 is formed in a shape that is wave-wound along the circumferential direction on the inner peripheral side of the stator core 30.

  The winding 40 constituting the stator coil 4 includes a linear slot accommodating portion 43 accommodated in the slot 31 of the stator core 30 and a turn portion 44 connecting the adjacent slot accommodating portions 43 to each other. Yes. The slot accommodating portions 43 are accommodated in the slots 31 for each predetermined number of slots (in this embodiment, 3 phases × 2 = 6). The turn portion 44 is formed so as to protrude from the end surface of the stator core 30 in the axial direction.

  Furthermore, the stator coil 4 is formed in a state in which both ends of the plurality of windings 40 protrude from the axial end surface of the stator core 30 and the plurality of windings 40 are wound in a wave shape along the circumferential direction. ing. One phase of the stator coil 4 is formed by welding the ends of the first winding portion 40a and the second winding portion 40b together by welding. That is, one phase of the stator coil 4 is formed from one assembly formed by joining the ends of two molded bodies formed from two electric conductor wires.

  The slot accommodating portion 43 of the first winding portion 40a and the slot accommodating portion 43 of the second winding portion 40b are accommodated in the same slot 31. At this time, the slot accommodating portions 43 of the first winding portion 40 a and the slot accommodating portions 43 of the second winding portion 40 b are installed so as to be alternately positioned in the depth direction of the slot 31. And the joint part 45 of the 1st coil | winding part 40a and the 2nd coil | winding part 40b is the slot accommodation in which the winding direction of the 1st coil | winding part 40a and the 2nd coil | winding part 40b reverses. A folded portion 46 formed by the portion 43 is formed.

  FIG. 9 shows a development view of the stator coil 4, that is, a plan view of the assembled body 47 before being wound. The stator coil 4 has six sets of first winding portions 40a and second winding portions 40b having different winding directions, and three-phase ( U, V, W) × 2 (double slots) coils. In each assembly, the end on the side opposite to the end on the neutral point side (or phase terminal side) of the first winding portion 40a and the phase terminal side (or neutrality) of the second winding portion 40b. The end on the opposite side to the end on the dot side is connected via a slot accommodating portion 43 formed of a folded portion 46. The method of connecting the windings 40 of each phase is the same.

  FIG. 10 shows a perspective view of an assembly 50 in which the stator core 30 is assembled to the stator coil 4 (winding body 48). Further, FIG. 11 shows a perspective view of the outer cylinder 5 that shrinks on the outer periphery of the assembly 50.

  A back core portion 321 of the split core 32 stacked in the axial direction appears on the outer periphery of the assembly 50. The outer cylinder 5 has a cylindrical shape with a thickness of 2 mm, for example, and is formed of low carbon steel through which magnetic flux can pass.

  In the present embodiment, the outer cylinder 5 is provided with three flanges 5a protruding on the outer peripheral side in the direction orthogonal to the axis on the outer peripheral surface of the outer cylinder 5 on one end side in the axial direction. The flange 5a is arranged at a position obtained by dividing the outer cylinder 5 into three parts in the circumferential direction. The number of divisions is not limited to three as long as it is at least two or more. Further, each of the divided flanges 5a is provided with a through hole 5b used when the stator 3 is fixed to the housing 10, for example. The through holes 5b may be provided in each of the divided ridges 5a, or may be provided only in any of the divided ridges 5a. Alternatively, it may not be provided. In addition, the internal diameter of the cylinder part 5c of the inner peripheral side of the outer cylinder 5 is made into the perfect circle.

  Next, a method for manufacturing the stator 3 of the rotating electrical machine 1 will be described.

  <Molding process> First, 12 molded bodies are molded from 12 electric conductor wires. As shown in FIG. 9, each molded body to be molded here includes a plurality of straight portions 431 that extend in parallel to each other and are arranged in parallel in the longitudinal direction of the molded body, and adjacent straight portions 431 that are adjacent to each other. It has a plurality of turn portions 44 that are alternately connected at one end side and the other end side.

  <Incorporation process> The assembly body 47 is formed by incorporating 12 molded bodies. In this built-in body 47, six sets of bodies are arranged in parallel in the longitudinal direction of the built-in body 47. Each assembly includes a first line portion that becomes the first winding portion 40a and a second line portion that becomes the second winding portion 40b. In addition, the 1st line part consists of one molded object, and the 2nd line part also consists of one molded object.

  The end portion of the first line portion and the end portion of the second line portion in each assembly are welded to form a joint portion 45. In addition, after assembling the twelve molded bodies, the end portion of the first line portion and the end portion of the second line portion in each assembly may be joined, or the end portion of the first line portion and the second portion. After joining the ends of the line portions to form six sets of assemblies, these six sets of assemblies may be incorporated.

  Each assembly in the built-in body 47 includes a plurality of straight overlapping portions 471 formed by superimposing a plurality of straight portions 431 in the first line portion and a plurality of straight portions 431 in the second line portion. In the longitudinal direction of the built-in body 47. However, each of the six straight portions 431 of the turned-up portion 46 and the six straight portions 431 at the end of winding, which are the start of winding in a winding process described later, is not overlapped with the other straight portions 431.

  <Winding Step> The built-in body 47 is wound by a predetermined number of turns (for example, 3 or 4 times) so that the folded portion 46 is located on the axial center side, thereby forming the winding body 48 shown in FIG. . At this time, the turn portion 44 of the built-in body 47 is wound while being plastically deformed to a predetermined winding radius. Note that the turn portion 44 may be bent using a forming die having a predetermined bending R-shaped forming surface or a predetermined forming roller.

  The wound body 48 has a plurality of straight laminated portions 481 formed by laminating a plurality of straight overlapping portions 471 in one assembly by the number of turns in the radial direction in the circumferential direction of the wound body 48. . In each of the straight stacked portions 481, the number of the straight portions 431 that is twice as many as the number of turns is overlapped and aligned in a row in the radial direction (radial direction). At this time, each of the straight laminated portions 481 is located in a state of being spaced apart in the circumferential direction of the winding body 48.

  <Assembly Step> To the wound body 48 obtained as described above, the teeth 320 obtained by combining the split core 32 and the split core 32-1 from the radially outer side are arranged between the adjacent straight laminated portions 481. The adjacent split cores 32 and the split cores 32-1 are connected to each other. At the time of this connection, as shown in FIG. 12A, the temperature detection element 500 is sandwiched and fixed in both half-recesses 600h of the adjacent split cores 32-1. In a state where the divided cores 32-1 are connected, both the half-recesses 600 h are combined into one to form a temperature detection element mounting recess (hereinafter simply referred to as a recess) 600. Moreover, the assembly 50 shown in FIG. 10 is obtained by the connection.

  However, FIG. 12A is a diagram illustrating the connection state of the split cores 32-1 constituting the stator core 30, and the dimensions of the recesses 600 of the split cores 32-1 and the temperature detection element 500, and FIG. These show sectional views when the split core 32-1 and the temperature detection element 500 in the stator core 30 shown in FIG. 10 are cut in the radial direction. 5 shows a state in which the temperature detection element output line 506 of the temperature detection element 500 protrudes leftward toward the drawing, but FIG. 12B shows a state in which the temperature detection element output line 506 protrudes upward.

  As shown in FIG. 12A, the circumferential width 2 a of the concave portion 600 of the split core 32-1 is narrower than the circumferential width b of the temperature detection element 500. In other words, the dimension of the temperature detection element 500 is such that the circumferential width 2 a in the state where the temperature detection element 500 is attached to the recess 600 is wider than the circumferential width b of the recess 600. Therefore, if the elastic temperature detecting element 500 is fitted into the half-recessed portion 600h of the adjacent divided core 32-1, and the divided cores 32-1 are connected, the temperature detection is performed as shown in FIG. The element 500 is firmly fixed between the divided cores 32-1.

  Further, as shown in FIG. 12B, the radial length c of the concave portion 600 of the split core 32-1 is shorter than the radial length d when the temperature detecting element 500 is attached to the concave portion 600. Therefore, when the temperature detection element 500 is fitted and fixed in the recess 600, the temperature measurement surface 502a of the temperature detection element 500 is protruded toward the slot 31 side. For this reason, when the winding 40 of the stator coil 4 is housed in the slot 31, the temperature measuring surface 502a properly contacts the winding 40, so that the temperature of the stator coil 4 is properly measured.

  <Insertion (shrinking) step> The assembly 50 shown in FIG. 10 is inserted into the outer cylinder 5 shown in FIG. In this case, the temperature detecting element 500 is fitted at a predetermined position on the outer periphery of the outer cylinder 5. The predetermined position is a predetermined position at which the heat generation temperature of the stator coil 4 can be appropriately measured when the rotating electrical machine 1 is mounted on a target vehicle. When the fitting is performed, first, the outer cylinder 5 is heated to a predetermined temperature (for example, 300 ° C.) by a heater (not shown). Subsequently, the assembly 50 is inserted into the heated outer cylinder 5. At this time, the assembly 50 is inserted from the other axial end side of the outer cylinder 5 (upper end side in FIG. 11). Conversely, the other axial end side (upper end side in FIG. 11) of the outer cylinder 5 may be inserted from the axial direction of the assembly 50. That is, these insertions may be performed by relatively moving the outer cylinder 5 and the assembly 50.

  After completing the insertion of the assembly 50 into the outer cylinder 5, it is cooled for about 30 minutes by a cooling means such as a blower (not shown). This completes the insertion (shrinking) process, and the stator 3 shown in FIG. 2 is completed.

  In the above, the shrinkage is used in the fitting between the outer periphery of the core assembly 50 and the inner periphery of the outer cylinder 5, but in order to obtain a required fitting force, the outer peripheral surface and the inner peripheral surface are pressed into each other. A method such as fitting may be used. Further, a plurality of recesses 600 formed in the stator core 30 may be provided, and the temperature detection element 500 may be fitted in each of the plurality of recesses 600.

  As described above, the stator 3 of the rotating electrical machine according to the first embodiment is wound by being inserted into the stator core 30 through the slot 31 and wound around the stator core 30 having a plurality of slots 31 in the circumferential direction. And a stator coil 4 made of a plurality of conductors.

  A feature of the present embodiment is that at least one recess 600 is formed on the annular surface of the stator core 30 so as to open on the side perpendicular to the annular surface and on the slot 31 side, and temperature is detected in the recess 600. The temperature detecting element 500 having the temperature measuring surface 502a was fitted into the slot 31 with the temperature measuring surface 502a facing.

  With this configuration, the temperature detection element 500 can be easily fitted into the concave portion 600 of the stator core 30, and the temperature measurement surface 502 a of the fitted temperature detection element 500 is directed into the slot 31. Therefore, the temperature of the stator coil 4 in the slot 31 can be detected appropriately. Further, since the temperature detecting element 500 is fitted in the concave portion 600 of the stator core 30, the temperature detecting element 500 can be fixed without using an adhesive or a fixing member, thereby reducing the cost. Can be planned.

  Further, the temperature measurement surface 502 a is positioned in the slot 31. With this configuration, when the temperature detection element 500 is fitted into the recess 600, the temperature measurement surface 502a of the temperature detection element 500 protrudes into the slot 31, so that the stator coil 4 is accommodated in the slot 31. At this time, the temperature measurement surface 502a properly comes into contact with the winding, and thereby the temperature of the stator coil 4 can be detected with high accuracy.

  Further, the temperature detection element 500 may be bonded to the recess 600 with an adhesive. With this configuration, the temperature detection element 500 can be firmly fixed to the stator core 30, so that the temperature detection element 500 is not detached and the temperature cannot be detected.

  Further, the stator core 30 around which the stator coil 4 is wound has a cylindrical shape in a state where the temperature detection element 500 becomes a temperature detection position of the stator coil 4 that is predetermined in the vehicle to be mounted on the rotating electrical machine. It is inserted into the outer cylinder 5 and fixed by fitting.

  With this configuration, the relative position between the stator core 30 and the outer cylinder 5 can be determined so that the temperature detection element 500 is disposed at an appropriate temperature detection position for each vehicle. Therefore, when the rotating electrical machine is mounted on the vehicle, it is only necessary to change the relative position between the stator core 30 and the outer cylinder 5 so that the temperature detection element 500 is at an appropriate detection position in the vehicle.

  The stator core 30 is formed of a split core 32-1 that is divided into at least two or more, and becomes a recess 600 when the split surfaces abut on the split surface of the split core 32-1. A half-recessed portion 600h is formed.

  According to this configuration, when the divided cores 32-1 are connected when the stator core 30 is formed, the divided cores are connected to each other by sandwiching the temperature detection element 500 between the half-recesses 600h formed on the divided surface. When the 32-1 is connected, the temperature detecting element 500 is fitted in the recess 600. Therefore, the temperature detection element 500 can be easily fixed to the stator core 30.

  Further, the temperature detecting element 500 has elasticity, and the dimension of the temperature detecting element 500 having elasticity is such that the circumferential width b in a state where the temperature detecting element 500 is attached to the recess 600 is the circumference of the recess 600. It is wider than the direction width 2a.

  According to this configuration, since the circumferential width b of the elastic temperature detection element 500 is wider than the circumferential width 2a of the recess 600, the temperature detection element 500 is contracted and fitted into the recess 600. The element 500 can be firmly fixed by the stator core 30.

  In addition, the annular radial length c of the concave portion 600 is shorter than the radial length d of the temperature detecting element 500 in a state where the temperature detecting element 500 is attached to the concave portion 600.

  According to this configuration, when the temperature detection element 500 is fitted in the recess 600, the temperature measurement surface 502a of the temperature detection element 500 is protruded toward the slot 31 side. For this reason, when the stator coil 4 is housed in the slot 31, the temperature measurement surface 502a properly contacts the stator coil 4, so that the temperature of the stator coil 4 can be detected with high accuracy.

  The temperature detection element 500 includes a temperature measurement unit 502 having a temperature measurement surface 502a, and a low thermal conductivity member 504 that covers the part other than the temperature measurement surface 502a and has a lower thermal conductivity than the stator core 30. .

  According to this configuration, since the temperature detection element 500 other than the temperature measurement surface 502a is covered with the low thermal conductivity member 504, it is difficult for heat to be transmitted between the stator core 30 and the temperature measurement unit 502. This makes it difficult for the measurement heat of the temperature measurement unit 502 to escape to the stator core 30, so that the heat generation temperature of the stator coil 4 on the temperature measurement surface 502a can be measured more accurately.

  The low thermal conductivity member 504 is formed of a resin member. Thereby, the low thermal conductivity member 504 can be easily formed.

  Furthermore, the winding 40 of the stator coil 4 is a square wire having a square cross section. As a result, the contact area of the winding 40 with the temperature measurement surface 502a of the temperature detection element 500 can be increased, so that the temperature of the winding 40 can be measured more accurately.

  Further, as a method of manufacturing the stator 3 of the rotating electrical machine 1, in the first step, on the annular surface of the annular stator core 30 having a plurality of slots 31 in the circumferential direction, A recess 600 that opens to the side 31 is formed. In the second step, the stator coil 4 formed by the plurality of windings 40 is wound on the stator core 30 in which the recess 600 is formed in the second step, and the stator coil 4 is wound in the slot 31 of the stator core 30. It incorporates so that line 40 may be penetrated. In the third step, the temperature detecting element 500 having the temperature measuring surface 502a for detecting the temperature is inserted into the recess 600 of the stator core 30 in which the stator coil 4 is incorporated in the second step. Are fitted with the temperature measurement surface 502a facing toward. In the fourth step, the stator core 30 in which the temperature detection element 500 is fitted in the concave portion 600 in the third step is used as the temperature of the stator coil 4 that is determined in advance in the vehicle on which the temperature detection element 500 is mounted. The detection position is inserted into the cylindrical outer cylinder 5 and fixed.

  According to this manufacturing method, the stator core 30 in which the temperature detecting element 500 is fitted is formed in the concave portion 600, and this stator core 30 is inserted into the outer cylinder 5 which is a separate member and fitted and fixed. Then, the relative position between the stator core 30 and the outer cylinder 5 is determined and fitted and fixed so that the temperature detection element 500 becomes a predetermined detection position of the temperature of the stator coil 4 in the vehicle to be mounted. That is, since the detection position of the temperature detection element 500 can be determined simply by changing the relative position between the stator core 30 and the outer cylinder 5, when the rotating electrical machine is mounted on another type of vehicle, the vehicle The position of the temperature detection element 500 of the stator can be easily adjusted to the appropriate temperature detection position of the temperature detection element 500 in FIG.

(Second Embodiment)
FIG. 13 shows a stator core 30 of a rotating electrical machine according to a second embodiment of the present invention, (a) is a perspective view of the stator core 30, and (b) is a cross-sectional position S indicated by a broken line in (a). It is sectional drawing of the split core 32-1 and the temperature detection element 500 part in the stator core 30 when a cross section is seen from arrow Y1 direction.

  The feature of the second embodiment is that the temperature detection element 500 is fitted into the temperature detection element mounting recess 600a of the divided core 32-1 to which the stator core 30 is connected, and the temperature detection element 500 is fitted. This is because the stator core 30 and the stator coil 4 are impregnated. The impregnation treatment is performed by immersing the stator core 30 and the stator coil 4 in, for example, a molten epoxy resin having a lower thermal conductivity than the stator core 30, and then solidifying the molten epoxy resin. As a result, the temperature detecting element 500 fitted in the recess 600a is covered with the impregnated material 700 made of an epoxy resin having a low thermal conductivity.

  However, the radial length c1 of the recess 600a is longer than the radial length d of the temperature detection element 500. Accordingly, when the temperature detection element 500 is fitted into the recess 600a with the temperature measurement surface 502a protruding toward the slot 31, a part of the recess 600a is opened toward the outer peripheral end surface of the temperature detection element 500 in the outer peripheral direction. It becomes a state to do. The melted epoxy resin enters and solidifies into the opening, and becomes an impregnated material 700 that covers the temperature detection element 500.

  When coated with the impregnated material 700 as described above, in the rotating electrical machine 1 equipped with a cooling system that uses a cooling medium, the influence of the cooling medium on the temperature detection element 500 is suppressed, and highly accurate temperature detection is possible. It can be. Further, when the temperature detection element 500 is fitted and fixed in the recess 600a, the temperature detection element 500 can be easily fixed to the recess 600a because it is only necessary to wait for solidification after being immersed in the molten impregnated material 700. it can. Furthermore, if an epoxy resin is used for the impregnated material 700, the impregnated material 700 can be easily formed.

(Third embodiment)
FIG. 14 is a cross-sectional view when the split core 32-1 and the temperature detection element 500 in the stator core of the rotating electrical machine according to the third embodiment of the present invention are cut in the radial direction. In addition, this sectional view shows a split core 32-1 in the stator core 30 and a stator coil 4 (the same shape portion is partially omitted) when the cross section at the cross sectional position S indicated by a broken line in FIG. 13 is viewed from the arrow Y1 direction. And corresponds to a cross-sectional view of the temperature detecting element 500 portion.

  A temperature detection element mounting concave portion 600b shown in FIG. 14 is formed by forming a concave hole in the back core portion of the split core 32-1, which is a constituent element of the stator, so that the axial end surface side is open. The temperature detection element 500 is inserted into the 600b from the axial direction and can be fitted and fixed.

  According to this structure, since the concave portion 600b opened toward the outer side in the axial direction is formed on the axial end surface of the stator core 30, the opening of the concave portion 600b is visible from the outside. Therefore, it becomes easy to fit the temperature detecting element 500 into the concave portion 600b. Further, since the temperature detecting element 500 can be easily fitted and fixed without using an adhesive or a fixing member, the cost can be further reduced. Further, the recess 600b may be provided in one split core 32-1 (or 32) even if it does not exist on the split surface of the split core 32-1. Even in this case, the temperature detection element 500 can be sufficiently fixed.

(Fourth embodiment)
FIG. 15 is a cross-sectional view when the split core 32-1 and the temperature detection element 500 in the stator core of the rotating electrical machine according to the fourth embodiment of the present invention are cut in the radial direction. In addition, this sectional view shows a split core 32-1 in the stator core 30 and a stator coil 4 (the same shape portion is partially omitted) when the cross section at the cross sectional position S indicated by a broken line in FIG. 13 is viewed from the arrow Y1 direction. And corresponds to a cross-sectional view of the temperature detecting element 500 portion.

  The temperature detection element mounting recess 600c shown in FIG. 15 is formed by forming a through-hole that extends in the radial direction from the slot 31 side to the outer peripheral side in the back core portion of the split core 32-1. The temperature detection element output line 506 side of the temperature detection element 500 is inserted into the recess 600c from the slot 31 side toward the outer periphery side, and the temperature detection element 500 is recessed with the temperature detection element output line 506 protruding from the outer periphery side. The structure can be fitted and fixed to 600c.

  According to this structure, the temperature detection element 500 can be easily fitted and fixed to the recess 600c of the split core 32-1 constituting the stator core 30 without using an adhesive or a fixing member, so that the cost is lower. Can be achieved. Further, the recess 600c may be provided in one split core 32-1 (or 32) even if it does not exist on the split surface of the split core 32-1. Even in this case, the temperature detection element 500 can be sufficiently fixed.

(Fifth embodiment)
FIG. 16 is a partial plan view showing the main part of the stator core of the rotating electrical machine according to the fifth embodiment of the present invention. This partial plan view corresponds to a plan view of each divided core 32-1 of the stator core 30 viewed from the direction of the arrow Y2 shown in FIG.

  A temperature detecting element mounting recess 600d shown in FIG. 16 is formed by forming a fan-shaped concave hole on the end face side where each divided core 32-1 is brought into contact with and contacted. The sector shape of the recess 600d has a sector shape in which the dimension in the circumferential direction on the inner circumferential side is narrower than the outer circumferential side in the planar shape. More specifically, a half fan-shaped concave hole obtained by dividing a sector by a center line in the radial direction is formed in one divided core 32-1, and this half sector is attached to form a sector-shaped recess 600d. Further, the low thermal conductivity member 504a of the temperature detecting element 500a has a fan shape that can be fitted and fixed to the concave portion 600d.

  Therefore, if the fan-shaped temperature detecting element 500a is fitted into the fan-shaped recess 600d, the temperature detecting element 500a can be easily fixed to the stator core 30 without using an adhesive or a fixing member. In addition, since it can be fitted and fixed without using an adhesive or a fixing member, the cost can be further reduced.

  Furthermore, even if the temperature detection element 500a has the rectangular planar shape shown in FIG. 5, when connecting the two divided cores 32-1, the temperature detecting element 500 a is a semi-fan shaped concave hole on each divided core 32-1. If sandwiched, the low thermal conductivity member 504 of the temperature detecting element 500 has elasticity, so that it can be firmly fitted and fixed by the fan-shaped recess 600d.

(Sixth embodiment)
FIG. 17 is a partial plan view showing the main part of the stator core of the rotating electrical machine according to the sixth embodiment of the present invention. This partial plan view corresponds to a plan view of each divided core 32-1 of the stator core 30 viewed from the direction of the arrow Y2 shown in FIG.

  A temperature detecting element mounting recess 600e shown in FIG. 17 is formed by forming a T-shaped recessed hole on the end surface side where each divided core 32-1 is brought into contact with and contacted. The T-shape of the recess 600e is a T-shape in which the outer peripheral side is long in the circumferential direction in the planar shape and extends from the center of this long portion into the slot 31 in the radial direction. More specifically, one split core 32-1 is formed with a semi-T-shaped concave hole obtained by dividing a T-shape by a center line in the radial direction, and this half-T-shaped is attached to form a T-shaped concave portion 600e. It becomes. Further, the low thermal conductivity member 504b of the temperature detection element 500b has a T-shape that can be fitted and fixed to the recess 600e.

  Therefore, if the T-shaped temperature detection element 500b is fitted into the T-shaped recess 600e, the temperature detection element 500b can be easily fixed to the stator core 30 without using an adhesive or a fixing member. In addition, since it can be fitted and fixed without using an adhesive or a fixing member, the cost can be further reduced.

  Furthermore, even when the temperature detection element 500b has a rectangular planar shape shown in FIG. 5, when the two divided cores 32-1 are connected, both the half-T-shaped recesses of each divided core 32-1 are connected. If sandwiched between the holes, the low thermal conductivity member 504 of the temperature detecting element 500 has elasticity, so that it can be fitted and fixed to the fan-shaped recess 600e.

  In addition, in Embodiments 1 to 6, an insulating member may be provided between the temperature detection element 500 and the stator coil 4. This insulating member does not break down even if a voltage of 1 kV to 2 kV normally applied to the stator coil 4 is applied for a predetermined time, and does not break even if a voltage of about 10 kV is applied for a predetermined time. There is no member. In the case of this configuration, the insulation between the temperature detection element 500 and the stator coil 4 is improved, and the temperature measurement by the temperature detection element 500 can be performed appropriately.

  Further, the insulating member may be in direct contact with the temperature detection element 500 and the stator coil 4. In this case, since the temperature detection element 500 is in direct contact with the stator coil 4 via the insulating member, the temperature of the stator coil 4 can be measured more appropriately.

DESCRIPTION OF SYMBOLS 1 Rotating electrical machinery 100, 101 Housing member 10 Housing 110, 111 Bearing 2 Rotor 20 Rotating shaft 3 Stator 30 Stator core 31 Slot 32-1 Teeth part of the split core 320 321 Back core part 4 Stator coil 40 Winding 41 Conductor 420 Inner layer 421 Outer layer 42 Insulating film 43 Slot accommodating portion 44 Turn portion 40a First winding portion 40b Second winding portion 45 Joining portion 46 Turned portion 47 Built-in body 48 Winding body 5 Outer cylinder 5a ５ 5b Through hole 500, 500a, 500b Temperature detection element 502 Temperature measurement unit 502a Temperature measurement surface 504, 504a, 504b Low thermal conductivity member 506 Temperature detection element output line 50 Assembly 600, 600a, 600b, 600c, 600d, 600e For temperature detection element mounting Recess 600h Semi-recessed 700 Impregnated material

Claims (21)

In a stator of a rotating electrical machine having an annular stator core having a plurality of slots in the circumferential direction, and a stator winding by a plurality of conductors inserted into and wound around the slots of the stator core,
At least one recess opening on the slot side is formed in the annular surface of the stator core that circulates in the annular shape, and a temperature detection element having a temperature measurement surface for detecting temperature is provided in the recess. The stator of the rotating electrical machine is fitted with the temperature measurement surface facing toward.   The stator of the rotating electrical machine according to claim 1, wherein the temperature measurement surface is located in the slot.   The stator for a rotating electrical machine according to claim 1, wherein the temperature detection element is bonded to the concave portion with an adhesive.   The stator core around which the stator winding is wound has a cylindrical shape in a state where the temperature detection element is at a temperature detection position of the stator winding that is predetermined in a vehicle to be mounted on a rotating electrical machine. The stator for a rotating electrical machine according to any one of claims 1 to 3, wherein the stator is fitted and fixed by being inserted into an outer cylinder.   The stator core is formed of a split core that is divided into at least two or more, and a partial recess that becomes the recess when the split surfaces are in contact with each other is formed on the split surface of the split core. The stator for a rotating electrical machine according to any one of claims 1 to 4, wherein the stator is a rotating electrical machine.   The temperature detecting element has elasticity, and the dimension of the temperature detecting element having elasticity is such that the circumferential width when the temperature detecting element is attached to the recess is wider than the circumferential width of the recess. The stator for a rotating electrical machine according to claim 1, wherein the stator is a rotating electrical machine.   The radial length of the concave portion corresponding to the annular radial direction is shorter than the radial length of the temperature detection element in a state where the temperature detection element is attached to the concave portion. Item 7. A stator of a rotating electrical machine according to any one of items 1 to 6.   The temperature detection element includes a temperature measurement unit having the temperature measurement surface, and a low thermal conductivity member that covers other than the temperature measurement surface and has a lower thermal conductivity than the stator core. The stator of the rotary electric machine according to any one of claims 1 to 7.   The stator of a rotating electrical machine according to any one of claims 1 to 8, wherein the stator windings have square wires with a cross-sectional shape.   The rotation according to any one of claims 1 to 9, wherein the recess and the temperature detection element are covered with a fixing member that solidifies after melting in a state where the temperature detection element is fitted in the recess. Electric stator.   The stator of a rotating electrical machine according to claim 10, wherein the fixing member is a low thermal conductivity member having a lower thermal conductivity than the stator core.   The stator of a rotating electrical machine according to claim 8 or 11, wherein the low thermal conductivity member or the fixing member is a resin member.   The rotary electric machine according to any one of claims 1 to 12, wherein the concave portion is opened toward an outer side in the axial direction on at least one end surface of the stator core in the axial direction. stator.   The said recessed part is a through-hole penetrated and penetrated to the said stator core to the said slot side and the outer peripheral side of the said stator core in the radial direction. Stator of rotating electrical machine.   The concave portion is a fan-shaped concave portion whose inner circumferential side is narrower in the circumferential direction than the annular outer peripheral side, and the temperature detecting element has a fan shape that can be fitted into the fan-shaped concave portion. The stator for a rotating electrical machine according to claim 1, wherein the stator is a rotating electrical machine.   The stator core is formed of a split core that is divided into at least two or more. When the split surfaces are brought into contact with the split surface of the split core, the stator core is located on the inner peripheral side of the annular outer peripheral side. The stator of the rotary electric machine according to any one of claims 1 to 14, wherein a semi-fan-shaped concave portion that is a fan-shaped concave portion having a narrow circumferential dimension is formed.   The concave portion is a T-shaped concave portion that extends a predetermined length in the circumferential direction on the outer circumferential side of the annular shape, and extends from the center of the elongated portion to the inside of the slot in the radial direction. The stator of the rotating electrical machine according to any one of claims 1 to 15, wherein the stator has a T shape that can be fitted to the stator.   The stator core is formed of a split core that is divided into at least two, and the annular outer peripheral side extends a predetermined length in the circumferential direction when the split surfaces abut against the split surface of the split core. The rotary electric machine according to any one of claims 1 to 14, wherein a semi-T-shaped recess serving as a T-shaped recess extending in the radial direction from the center of the extended portion into the slot is formed. Stator.   The insulating member that does not cause dielectric breakdown with a voltage applied to the stator winding is provided between the temperature detection element and the stator winding. The stator of the rotating electrical machine described in 1.   The stator of the rotating electric machine according to claim 19, wherein the insulating member is in direct contact with the temperature detection element and the stator winding. A first step of forming a recess opening on the slot side on an annular surface of the annular stator core having a plurality of slots in the circumferential direction;
The stator winding formed by a plurality of conductors is incorporated into the stator core in which the recess is formed in the first step so that the conductor of the stator winding is inserted into the slot of the stator core. The second step;
A temperature detecting element having a temperature measuring surface for detecting temperature in a concave portion of the stator core in which the stator winding is incorporated in the second step, with the temperature measuring surface facing the slot of the stator core. A third step of mating;
In the third step, the stator core in which the temperature detection element is fitted in the recess is used as the temperature detection position of the stator winding that is predetermined in the vehicle to be mounted on the rotating electrical machine. And a fourth step of inserting into and fixing to a cylindrical outer cylinder in a state. A method of manufacturing a stator of a rotating electrical machine.

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