Motor

Abstract

A motor includes a stator core, a coil, a plurality of terminals, at least one refrigerant supply flow path, and a terminal cooling path. The stator core extends in the axial direction of the motor. The coil is wound around the stator core. The plurality of terminals are configured to be connected to the coil. The at least one refrigerant supply flow path is disposed along the outer periphery of the stator core. The terminal cooling path is provided in the refrigerant supply flow path and is configured to supply a refrigerant to the plurality of terminals.

Description

Technical Field

[0001] The present disclosure relates to a motor. Background Art

[0002] A motor includes a stator in which a three-phase coil is wound around a stator core, and a rotor. Along the axial direction of the stator core, on its outer side, the terminals of the coils extending outward are connected to each other by welding to form a coil end portion. In such a coil end portion, cooling pipes serving as refrigerant supply paths are provided on the left and right sides of the outer periphery of the stator core. In the cooling pipes, one or more openings for discharging the refrigerant are formed along the end portion and the extending direction of the cooling pipes in order to cool the coil end portion and the stator core (U.S. Patent Application Publication No. 2021 / 0067006).

[0003] The conductor extending from the bus bar is also connected to an inverter or the like via a terminal block disposed on the outer periphery of the stator core. When a high-voltage current flows through the conductor, the terminal block and the conductor are heated together. Since the above-mentioned cooling pipes are located on the left and right sides of the terminal block, the terminal block is not sufficiently cooled. Summary of the Invention

[0004] The present disclosure provides a motor that suppresses or avoids heating of a plurality of terminals or terminal blocks.

[0005] The motor according to the technical solution of the present disclosure includes a stator core, a coil, a plurality of terminals, at least one refrigerant supply flow path, and a terminal cooling path. The stator core extends in the axial direction of the motor. The coil is wound around the stator core. The plurality of terminals are configured to be connected to the coil. The at least one refrigerant supply flow path is disposed along the outer periphery of the stator core. The terminal cooling path is configured to be provided in the refrigerant supply flow path and supply refrigerant to the plurality of terminals.

[0006] According to the above motor, since the refrigerant supply flow path has a terminal cooling path for supplying refrigerant to the plurality of terminals, the plurality of terminals can be effectively cooled.

[0007] It may also be configured that, based on the motor according to the technical solution of the present disclosure, the terminal cooling path houses the plurality of terminals and is configured to allow the refrigerant to flow between the plurality of terminals.

[0008] It may also be configured that, based on the motor according to the technical solution of the present disclosure, the terminal cooling path is configured to supply the refrigerant to at least one of the stator core and the coil end portion. It may also be configured that the coil end portion is included in the coil and exposed from an end portion along the axial direction of the stator core.

[0009] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the terminal cooling path has at least one discharge port, and the at least one discharge port is configured to discharge the refrigerant toward at least one of the stator core and the coil end portion.

[0010] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the plurality of terminals are arranged in a horizontal row parallel to the tangent of the end portion of the stator core closest thereto.

[0011] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the at least one refrigerant supply flow path includes two refrigerant supply flow paths. It can also be configured such that the two refrigerant supply flow paths are respectively arranged on both end sides along the arrangement direction of the plurality of terminals.

[0012] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the stator core is arranged along the rotation axis of the motor. It can also be configured such that the rotation axis is an axis orthogonal to the vertical direction. It can also be configured such that the at least one refrigerant supply flow path is arranged along the axial direction of the stator core. It can also be configured such that the plurality of terminals are arranged horizontally above the stator core. It can also be configured such that the terminal cooling path houses the plurality of terminals and is configured to allow the refrigerant to flow between the plurality of terminals.

[0013] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the terminal cooling path has an end portion extending along the circumferential direction of the stator core.

[0014] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the at least one refrigerant supply flow path includes two refrigerant supply flow paths along the axial direction of the stator core. It can also be configured such that the two refrigerant supply flow paths are arranged at the same height. It can also be configured such that the terminal cooling path is installed between the two refrigerant supply flow paths.

[0015] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the terminal cooling path is arranged at the same height as the at least one refrigerant supply flow path.

[0016] It can also be configured such that, based on the motor involved in the technical solution of the present disclosure, the terminal cooling path includes a concave or hollow flow path that houses the plurality of terminals and is in communication with the at least one refrigerant supply flow path and opens upward.

[0017] It can also be configured that, based on the motor involved in the technical solution of the present disclosure, the above-mentioned terminal cooling path has at least one discharge port, and the at least one discharge port is configured to discharge the refrigerant to at least one of the stator core and the coil end. It can also be configured that the above-mentioned coil end is included in the above-mentioned coil and exposed from the end along the axial direction of the above-mentioned stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features, advantages, and technical and industrial significance of the exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which the same reference numerals represent the same elements, where

[0019] Figure 1A is a view showing the stator core, terminal block, refrigerant supply passage, and terminal cooling path in the motor as viewed from one coil end side.

[0020] Figure 1B is a view showing the flow of the refrigerant in the terminal cooling path.

[0021] Figure 2 is a sectional view taken along line II-II of the motor shown in FIG. 1.

[0022] Figure 3 is a top view of the motor shown in FIG. 1.

[0023] Figure 4 is a view showing another technical solution of the terminal cooling path.

[0024] Figure 5 is a view showing another technical solution of the refrigerant supply passage and the terminal cooling path.

[0025] Figure 6 is a view showing another technical solution of the terminal cooling path.

[0026] Figure 7 is a view showing another technical solution of the terminal cooling path.

[0027] Figure 8 is a top view showing another technical solution of the refrigerant supply passage and the terminal cooling path. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] It can also be configured that an embodiment of the motor disclosed in this specification includes: a stator core extending in the axial direction; a coil wound around the stator core; a plurality of terminals connected to the coil; and at least one refrigerant supply passage disposed along the outer periphery of the stator core, and the refrigerant supply passage has a terminal cooling path for supplying refrigerant to the plurality of terminals.

[0029] Another embodiment of the above motor includes: the terminal cooling path that houses the plurality of terminals and is formed to allow the refrigerant to flow between the plurality of terminals. Thereby, the plurality of terminals can be effectively cooled.

[0030] Another embodiment of the above motor may also be configured such that the terminal cooling path is formed to supply the refrigerant to the stator core and / or the coil end portions that are exposed from the end portions along the axial direction of the stator core. Additionally, it may also be configured such that the terminal cooling path has at least one discharge port for discharging the refrigerant to the stator core and / or the coil end portions. Thereby, the stator core and / or the coil end portions are also effectively cooled.

[0031] Another embodiment of the above motor may also be configured such that the plurality of terminals are arranged in a horizontal row parallel to the tangent line of the end portion of the stator core closest to them. Thereby, the plurality of terminals can be efficiently cooled.

[0032] Another embodiment of the above motor may also be configured such that the at least one refrigerant supply flow path includes two refrigerant supply flow paths respectively arranged on both end sides along the arrangement direction of the plurality of terminals. Thereby, more refrigerant can be supplied to the terminal cooling path.

[0033] Another embodiment of the above motor may also be configured such that the motor has a rotation center that is substantially orthogonal to the vertical direction, the at least one refrigerant supply flow path includes two refrigerant supply flow paths arranged at substantially the same height along the axial direction of the stator core, the stator core is arranged along the rotation center, the plurality of terminals are arranged in a substantially horizontal direction above the stator core, and the terminal cooling path is erected in a substantially horizontal direction between the two refrigerant supply flow paths. Additionally, it may also be configured such that the terminal cooling path is arranged at the same height as the two refrigerant supply flow paths. Thereby, in a motor having a rotation center that is substantially orthogonal to the vertical direction, the space near the outer periphery of the stator core can be effectively utilized, and the refrigerant can be efficiently supplied to the plurality of terminals.

[0034] Another embodiment of the above motor may also be configured such that the terminal cooling path includes a concave or hollow-shaped flow path that houses the plurality of terminals and communicates with the two refrigerant supply flow paths. Additionally, it may also be configured such that the terminal cooling path has at least one discharge port for discharging the refrigerant to the stator core and / or the coil end portions. Thereby, the plurality of terminals can be reliably cooled.

[0035] Another embodiment of the above-described motor may also be configured as follows: The above-described motor has a rotation center substantially orthogonal to the vertical direction, the above-described at least one refrigerant supply flow path is arranged along the axial direction of the stator core, the stator core is arranged along the rotation center, the above-described plurality of terminals are arranged along a substantially horizontal direction above the stator core, and the terminal cooling path houses the above-described plurality of terminals and is formed so that the above-described refrigerant can flow between the above-described plurality of terminals. Thereby, the terminal cooling path can be compactly arranged around the stator core.

[0036] It may also be configured as follows: Based on this one embodiment, the above-described terminal cooling path has an end portion extending along the circumferential direction of the stator core. Thereby, the terminal cooling path can be compactly arranged around the stator core, and it is convenient to discharge the refrigerant to the coil end portion.

[0037] It may also be configured as follows: Based on this one embodiment, the above-described at least one refrigerant supply flow path includes two refrigerant supply flow paths arranged at substantially the same height along the axial direction of the stator core, and the terminal cooling path is provided between the above-described two refrigerant supply flow paths. Thereby, more refrigerant can be efficiently supplied to the terminal cooling path.

[0038] It may also be configured as follows: Based on this one embodiment, the above-described terminal cooling path is arranged at the same height as the above-described two refrigerant supply flow paths. Thereby, the cooling structure can be simply configured.

[0039] It may also be configured as follows: Based on this one embodiment, the above-described terminal cooling path includes a concave or hollow flow path that houses the above-described plurality of terminals and communicates with the above-described two refrigerant supply flow paths and opens upward. Thereby, the terminals can be reliably cooled.

[0040] It may also be configured as follows: Based on this one embodiment, the above-described terminal cooling path has at least one discharge port for discharging the above-described refrigerant to the coil end portion exposed from the end portion along the axial direction of the stator core to the stator core and / or the above-described coil. Thereby, the coil end portion can also be cooled together with the plurality of terminals.

[0041] Hereinafter, with appropriate reference to the drawings, the motor disclosed in this specification will be described. In the specification, the motor is not particularly limited, but for example, it can be a driving motor mounted on an electric vehicle, or a part of a drive motor system (E-Axle) or the like. The electric vehicle is a BEV, HEV, PHEV, FCV, etc. The upper side in the direction of gravity when mounted on a vehicle is referred to as the "upper side in the vertical direction", and the lower side in the direction of gravity is referred to as the "lower side in the vertical direction". In addition, in this specification, when only the "axial direction" is mentioned, it refers to the axial direction of the stator or the stator core included in the motor, when only the "circumferential direction" is mentioned, it refers to the circumferential direction of the stator or the stator core, and when only the "radial direction" is mentioned, it refers to the radial direction of the stator or the stator core.

[0042] Figure 1A Fig. 4 is a front view showing the motor 2 mounted on a vehicle as viewed from the end A on one end side of the coil of the stator 6. Figure 1B Fig. 6 is a view showing an enlarged view of the flow of the refrigerant in the terminal cooling path 40. Figure 2 Fig. 8 shows the Figure 1A sectional view taken along line II-II in Figure 3 Fig. 12 shows a top view of the motor 2. In addition, in the drawings, the vertical direction in this specification is shown as Z. In the drawings, the arrow indicates the flow of the refrigerant.

[0043] The motor 2 includes a rotor 4, a stator 6, a refrigerant supply flow path 20, a terminal block 30, and a terminal cooling path 40. Figures 1A to 3 The illustrated motor includes a rotation axis X orthogonal to the line in the vertical direction. The stator 6 arranged along the rotation axis X includes a stator core 8. The stator core 8 is a substantially annular body with respect to the rotation axis X of the motor 2 and is formed of, for example, laminated steel plates or the like. The rotor 4 is arranged in the central hole portion of the stator core 8. The stator core 8 includes a plurality of tooth portions (not shown) radially protruding from the inner peripheral surface of the annular back yoke 10 with a predetermined width, and slots (not shown) formed between the respective tooth portions.

[0044] The coil 14 is formed by winding a wire around the tooth portions of the stator core 8. In addition, in Figures 1A to 3 Fig. 22, the coil 14 and the coil ends 14a are schematically shown. The connection method of the wire for forming the coil 14 is not particularly limited. The coil 14 is composed of three-phase coil groups (not shown) of U-phase, V-phase, and W-phase. The coil 14 has coil ends 14a, 14b protruding from the stator core 8 at one end in the axial direction of the stator core 8 and the other end. The same-phase coils 14 wound separately in the circumferential direction are welded to the coil end 14a.

[0045] The refrigerant supply flow path 20 is a pipe for discharging the refrigerant supplied from the outside into the motor 2. The refrigerant supply flow path 20 extends along the axial direction at two specified positions on the outer periphery of the stator core 8 on the upper side in the vertical direction of the stator core 8. In the present embodiment, the motor 2 includes two refrigerant supply flow paths 20a and 20b. These refrigerant supply flow paths 20a and 20b extend from near the end B of the stator core 8 to near the end A respectively. When the position directly above the stator core 8 is set to 0 degrees, these refrigerant supply flow paths 20a and 20b are arranged at the same height on the outer periphery of the stator core 8 at positions within ±70 degrees and separated from each other.

[0046] The refrigerant supplied to the refrigerant supply flow paths 20a and 20b circulates in the motor 2 and the housing 2a that houses the motor 2, etc. In the present embodiment, the refrigerant is supplied to the refrigerant supply flow paths 20a and 20b via the housing 2a by a pump or the like, and the refrigerant flows from the other side in the axial direction (end B side) toward the one side in the axial direction (end A side).

[0047] The refrigerant supply flow paths 20a and 20b include discharge ports 22a and 22b for discharging the refrigerant toward the coil ends 14b, and discharge ports 24a and 24b for discharging the refrigerant toward the stator core 8. The opening positions on the peripheral wall of the refrigerant supply flow paths 20a and 20b of the discharge ports 22a, 22b, 24a, and 24b are not particularly limited, but are opened downward or obliquely downward in the vertical direction of the peripheral wall of the refrigerant supply flow paths 20a and 20b so as to discharge the refrigerant toward the coil ends 14b and the stator core 8.

[0048] In addition, the refrigerant is not particularly limited, and an oily liquid that can be used for cooling a known motor or the like can be appropriately used.

[0049] The terminal block 30 is arranged on the upper side in the vertical direction of the stator core 8 near the end A of the stator core 8. The terminal block 30 is arranged horizontally at the same height between the two refrigerant supply flow paths 20. The terminal block 30 is composed of a plurality of terminals 32 electrically connected to the coils of the stator 6 and a base (not shown) for holding the plurality of terminals. The plurality of terminals 32 in the present embodiment are four terminals 32, namely, a U-phase terminal extending from the U-phase coil, a V-phase terminal extending from the V-phase coil, a W-phase terminal extending from the W-phase coil, and a neutral point connection terminal extending from the neutral point bus bar. The terminal block 30 arranges these plurality of terminals 32 in a row in the horizontal direction. Cables connected to an inverter (not shown) extend from the terminal block 30. In addition, the terminal block 30 can adopt various structures based on requirements from the motor 2, the associated inverter, etc.

[0050] The terminal cooling path 40 is a path that houses the terminal block 30 and communicates with the refrigerant supply flow path 20 to supply refrigerant to the plurality of terminals 32. The terminal cooling path 40 is horizontally disposed at the same height above the stator core 8 near the end A in the vertical direction, in a manner bridging between the two refrigerant supply flow paths 20. The terminal cooling path 40 of the present embodiment has a housing portion 42 having a hollow portion 42a for housing the terminal block 30, and is configured as a hollow pipe through which refrigerant flows inside. The housing portion 42 extends between the two refrigerant supply flow paths 20 on the other axial side (end A side) of the two refrigerant supply flow paths 20. Communication holes 43 and 44 for communicating with the refrigerant supply flow paths 20a and 20b are provided at both ends along the extending direction of the housing portion 42.

[0051] The shape etc. of the housing portion 42 is not particularly limited, but is formed to have at least a space and volume sufficient for the refrigerant to flow through. The housing portion 42 can be formed, for example, of a resin material, a metal material, or a composite material of these.

[0052] The terminal cooling path 40 has a discharge port 46 at the bottom 45 on the lower side in the vertical direction of the housing portion 42, for discharging refrigerant toward the coil end portion 14a protruding from the end A. The number of discharge ports 46 is not particularly limited, and it is sufficient if there is at least one, but there are cases where it is preferably provided in plural from the viewpoint of the cooling efficiency of the coil end portion 14a.

[0053] In addition, although not shown, the terminal cooling path 40 may be connected to the housing 2a in order to direct the refrigerant toward the housing 2a.

[0054] Next, the cooling action in the terminal block 30 etc. in such a motor 2 will be described. If refrigerant flowing in the motor 2 and the housing 2a of the motor 2 is supplied to the refrigerant supply flow paths 20a and 20b by a pump or the like, the refrigerant flows from the other axial side (end B side) toward the axial one side (end A side). The refrigerant is discharged from the discharge ports 22a, 22b, 24a, and 24b provided in the refrigerant supply flow paths 20a and 20b to cool the coil end portion 14b and the stator core 8.

[0055] When the refrigerant flowing in the refrigerant supply flow paths 20a and 20b reaches near the end A, the refrigerant flows into the housing portion 42 of the terminal cooling path 40 via the communication holes 43 and 44. The refrigerant flowing into the terminal cooling path 40 cools the terminals 32 from both end sides along the arrangement direction of the plurality of terminals 32. In addition, refrigerant is supplied from the discharge port 46 provided at the bottom 45 of the housing portion 42 toward the coil end portion 14a to cool the coil end portion 14a.

[0056] As described above, according to the motor 2, by providing the refrigerant supply flow paths 20a, 20b and the terminal cooling path 40, refrigerant is reliably supplied to the terminal block 30, that is, the plurality of terminals 32, and these components are effectively cooled. Also, the coil end 14b, the stator core 8 and the coil end 14a can be cooled.

[0057] In addition, according to the motor 2, the narrow space around the motor 2 and the stator core 8 can be effectively utilized to cool the plurality of terminals 32, and the coil ends 14a, 14b and the stator core can also be cooled.

[0058] In the above embodiment, the terminal cooling path 40 is a hollow pipe that houses the plurality of terminals 32 and through which refrigerant flows inside, but it is not limited thereto, as long as refrigerant can be guided from the refrigerant supply flow paths 20a, 20b, etc. to the terminals. For example, as Figure 4 shown, the terminal cooling path 140 may also be a concave body 142 that houses the plurality of terminals 32 and opens upward in the vertical direction, and the communication hole 44 communicates with the refrigerant supply flow paths 20a, 20b. In this case, refrigerant is supplied from the discharge port 146 provided at the bottom 145 of the concave body 142 toward the coil end 14a to cool the coil end 14a.

[0059] In the above embodiment, the terminal cooling path 40 extends horizontally between the two refrigerant supply flow paths 20a, 20b, but it is not limited thereto. For example, as Figure 5 shown, the terminal cooling path 240 or the accommodating portion 242 may also have a shape in which both end portions 242a, 242b along its extending direction are bent or buckled along the circumferential direction of the stator core 8. Thus, for example, the discharge ports 246 provided at the bottoms 245 of the extending end portions 242a, 242b of the accommodating portion 242 can discharge refrigerant to the coil end 14a with good directivity and sufficiently.

[0060] In the above embodiment, the two refrigerant supply flow paths 20a, 20b and the terminal cooling path 40 are at the same height, but it is not limited thereto. From the viewpoint of design around the motor 2 and the stator core 8, etc., their positional relationship can be adjusted. For example, the terminal cooling path 40 can be arranged at a position lower in the vertical direction than the two refrigerant supply flow paths 20a, 20b, or the terminal cooling path 40 can be arranged on the upper side in the vertical direction. In the above cases, the refrigerant supply flow paths 20a, 20b and the terminal cooling path 40 are configured to communicate properly without being affected by the difference in height positions.

[0061] In the above-described embodiment, the terminal block 30 and the terminal cooling path 40 are provided near the end portion A of the stator core 8. However, the present invention is not limited thereto, and from the viewpoint of the design around the motor 2 and the stator core 8, the positions of these terminal block 30 and terminal cooling path 40 can be appropriately set in the axial direction of the stator core 8. For example, as Figure 6 shown, the terminal cooling path 340 that houses the terminal block 30 may also be provided to protrude more toward the front end in the axial direction than the end portion A of the stator core 8. The terminal cooling path 340 can also have a discharge port 346 facing the coil end portion 14a at the bottom 345 on the lower side in the vertical direction thereof. In this case, in order to improve the directivity of the refrigerant to the coil end portion 14a, a refrigerant guide member facing the coil end portion 14a side may be provided. In addition, the plurality of terminals 32 or the terminal block 30 may be arranged in a row in the lateral direction, for example, parallel to the tangent of any one end portion of the stator core 8 closest thereto.

[0062] In addition, as Figure 7 shown, the terminal cooling path 440 may also be set deeper so as to be away from the end portion A of the stator core 8 toward the end portion B side of the stator core 8. In this case, the terminal cooling path 440 is provided in the middle of the refrigerant supply flow paths 20a and 20b. In this case, the terminal cooling path 440 can also have a discharge port 446 for discharging the refrigerant toward the stator core 8 and a discharge port 447 for discharging the refrigerant toward the coil end portion 14a at the bottom 445 on the lower side in the vertical direction thereof. In addition, in the above description, the terminal cooling paths 40, 240, 340, and 440 are arranged on the upper side in the vertical direction of the motor 2 or the stator core 8. However, for example, they may also be arranged at positions other than the upper side in the vertical direction, such as on the side of the motor 2 or the stator core 8.

[0063] In the above-described embodiment, two refrigerant supply flow paths 20a and 20b are provided. However, the present invention is not limited thereto, and at least one may be provided. For example, as Figure 8 shown in the top view, a single refrigerant supply flow path 120 may also be provided directly above the stator core 8 in the vertical direction. The refrigerant supply flow path 120 may communicate with the terminal cooling path 40 at any position in the extending direction thereof. However, for example, as Figure 8 shown, it may also communicate at the central portion. In addition, three or more refrigerant supply flow paths may also be provided. The connection to the terminal cooling path 40 can be appropriately set.

[0064] According to the disclosure of the present specification, the present specification can include the following structures.

[0065] [1]A motor, wherein the motor includes: a stator core extending in the axial direction; a coil wound around the stator core; a plurality of terminals connected to the coil; and at least one refrigerant supply flow path arranged along the outer circumference of the stator core, and the refrigerant supply flow path has a terminal cooling path for supplying refrigerant to the plurality of terminals.

[0066] [2]The motor according to [1], wherein the terminal cooling path houses the plurality of terminals and is formed to allow the refrigerant to flow between the plurality of terminals.

[0067] [3]The motor according to [1] or [2], wherein the terminal cooling path can be formed to supply the refrigerant to the stator core and / or the coil end portion exposed from the end portion along the axial direction of the stator core.

[0068] [4]The motor according to any one of [1] to [3], wherein the terminal cooling path has at least one discharge port for discharging the refrigerant to the stator core and / or the coil end portion.

[0069] [5]The motor according to any one of [1] to [4], wherein the plurality of terminals are arranged in a row parallel to the tangent of the end portion of the stator core closest to them in the lateral direction.

[0070] [6]The motor according to any one of [1] to [5], wherein the at least one refrigerant supply flow path includes two refrigerant supply flow paths respectively arranged on both end sides along the arrangement direction of the plurality of terminals.

[0071] [7]The motor according to [1], wherein,

[0072] the motor has a rotation center substantially orthogonal to the vertical direction, the at least one refrigerant supply flow path is arranged along the axial direction of the stator core, the stator core is arranged along the rotation center, the plurality of terminals are arranged in a substantially horizontal direction above the stator core, the terminal cooling path houses the plurality of terminals and is formed to allow the refrigerant to flow between the plurality of terminals.

[0073] [8]The motor according to [7], wherein the terminal cooling path has an end portion extending along the circumferential direction of the stator core.

[0074] [9]The motor according to [7] or [8], wherein,

[0075] The at least one refrigerant supply flow path includes two refrigerant supply flow paths arranged at substantially the same height along the axial direction of the stator core, and the terminal cooling path is provided between the two refrigerant supply flow paths.

[0076]

[10] The motor according to any one of [7] to [9], wherein the terminal cooling path is arranged at the same height as the two refrigerant supply flow paths.

[0077]

[11] The motor according to any one of [7] to

[10] , wherein the terminal cooling path includes a concave or hollow flow path that accommodates the plurality of terminals and communicates with the two refrigerant supply flow paths and opens upward.

[0078]

[12] The motor according to [7] to

[11] , wherein the terminal cooling path has at least one discharge port that discharges the refrigerant to the stator core and / or the coil end portions that are exposed from the end portions along the axial direction of the stator core.

[0079] As described above, specific examples of the technology disclosed in this specification have been described in detail, but these are merely examples and do not limit the claims. The technology described in the claims includes the technology obtained by various modifications and changes to the above-described specific examples. The technical elements described in this specification or the drawings exhibit technical usefulness alone or through various combinations, and are not limited to the combinations described in the claims at the time of application. The technology illustrated in this specification or the drawings can achieve multiple purposes simultaneously, and achieving one of the purposes itself has technical usefulness.

Claims

1. A motor, characterized in that: The motor comprises: A stator core extending in the axial direction of the motor; A coil, wound around the stator core; a plurality of terminals configured to be connected to the coil; at least one refrigerant supply flow path arranged along the outer circumference of the stator core; and The terminal cooling path is provided in the coolant supply flow path and is configured to supply the coolant to the plurality of terminals.

2. The motor according to claim 1, characterized in that The terminal cooling path is composed of: accommodating the plurality of terminals, The refrigerant is configured to flow between the plurality of terminals.

3. The motor according to claim 1, characterized in that The terminal cooling path is configured to supply the coolant to at least one of the stator core and a coil end portion, the coil end portion being a portion of the coil and exposed from an end portion of the stator core along an axial direction.

4. The motor according to claim 3, characterized in that The terminal cooling path includes at least one discharge port configured to discharge the refrigerant toward at least one of the stator core and the coil end.

5. The motor according to claim 1, characterized in that The plurality of terminals are arranged in a row in a lateral direction in parallel with a tangent line of an end portion of the stator core that is closest thereto.

6. The motor according to claim 1, characterized in that The at least one refrigerant supply flow path includes two refrigerant supply flow paths respectively arranged at both end sides of the plurality of terminals along the arrangement direction.

7. The motor according to claim 1, characterized in that The stator core is arranged along a rotating axis of the motor, the rotating axis is an axis orthogonal to the vertical direction, and the at least one refrigerant supply flow path is arranged along an axial direction of the stator core. The plurality of terminals are arranged in a horizontal direction above the stator core. The terminal cooling path accommodates the plurality of terminals and is configured to allow the refrigerant to flow between the plurality of terminals.

8. The motor according to claim 7, characterized in that The terminal cooling path includes an end portion extending along a circumferential direction of the stator core.

9. The motor according to claim 7 or 8, characterized in that: The at least one refrigerant supply flow path includes two refrigerant supply flow paths along the axial direction of the stator core. The two refrigerant supply flow paths are arranged at the same height. The terminal cooling path is provided between the two refrigerant supply flow paths.

10. The motor according to claim 7 or 8, characterized in that: The terminal cooling path is arranged at the same height as the at least one refrigerant supply flow path.

11. The motor according to claim 7 or 8, characterized in that: The terminal cooling path includes a concave or hollow flow path that accommodates the plurality of terminals and communicates with the at least one refrigerant supply flow path and opens upward.

12. The motor according to claim 11, characterized in that The terminal cooling path includes at least one discharge port configured to discharge the refrigerant toward at least one of the stator core and a coil end portion, the coil end portion being a portion of the coil and exposed from an end portion of the stator core along an axial direction.

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