Electrical energy to mechanical energy converter

Abstract

To provide an electrical energy-mechanical energy converter that has high cooling performance, high output, is small and lightweight, and has excellent productivity. [Solution] The stator core (20) has a plurality of teeth protruding from a base portion, U-phase conductive pipes (111, 112,...), V-phase conductive pipes (121, 122,...), and W-phase conductive pipes (131, 132,...) arranged in the spaces between the teeth, one heat medium flow member (310) arranged on one side of the stator core (20) to prevent the heat medium flowing through the U-phase conductive pipes (111, 112,...), V-phase conductive pipes (121, 122,...), and W-phase conductive pipes (131, 132,...) from leaking out to the outside, and the other heat medium flow member (320) arranged on the other side of the stator core (20) to prevent the heat medium flowing through the U-phase conductive pipes (111, 112,...), V-phase conductive pipes (121, 122,...), and W-phase conductive pipes (131, 132,...) from leaking out to the outside.

Description

[Technical Field]

[0001] The present invention relates to a converter that converts electrical energy into mechanical energy or mechanical energy into electrical energy. [Background technology]

[0002] Converters that convert electrical energy into mechanical energy or mechanical energy into electrical energy include rotating electrical machines that function as electric motors or generators, linear motors, etc. In these converters, it is important to suppress temperature rise.

[0003] Patent Document 1 discloses an electric machine in which a single hollow conductor is folded back midway to form a double-layered stator coil, which is then wound around a stator core, and a heat transfer medium is passed through the hollow conductor to suppress temperature rise. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-135386 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the conventional electric machines described above require the hollow conductor to be wound into a coil, which results in poor productivity.

[0006] The present invention has been made in light of these conventional problems, and an object of the present invention is to provide an electrical energy-mechanical energy converter that has high cooling performance, high output, is small and lightweight, and is also highly manufacturable. [Means for solving the problem]

[0007] The present invention solves the above-mentioned problems by the following means. For ease of understanding, the reference numerals corresponding to the embodiments of the present invention are written in parentheses, but the present invention is not limited to these. Furthermore, the configurations described with reference numerals may be appropriately replaced or improved.

[0008] The first aspect is a stator core (20) having a plurality of teeth projecting from a base portion; a first U-phase conductive pipe (111) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a second U-phase conductive pipe (112) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a U-phase wire (11) that is electrically conductive and connected to one end of the first U-phase conductive pipe (111) protruding from the stator core (20); a U-phase connector (210) that is electrically conductive and connected to the other end of the first U-phase conductive pipe (111) protruding from the stator core (20) and the other end of the second U-phase conductive pipe (112) protruding from the stator core (20); a first V-phase conductive pipe (121) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a second V-phase conductive pipe (122) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than a thickness of the stator core (20); a V-phase wire (12) that is electrically conductive and connected to one end of the first V-phase conductive pipe (121) protruding from the stator core (20); a V-phase connector (220) that is electrically conductive and connected to the other end of the first V-phase conductive pipe (121) protruding from the stator core (20) and the other end of the second V-phase conductive pipe (122) protruding from the stator core (20); a first W-phase conductive pipe (131) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a second W-phase conductive pipe (132) that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core (20) to a length greater than the thickness of the stator core (20); a W-phase wire (13) that is electrically conductive and connected to one end of the first W-phase conductive pipe (131) protruding from the stator core (20); a W-phase connector (230) that is electrically conductive and that is connected to the other end of the first W-phase conductive pipe (131) protruding from the stator core (20) and the other end of the second W-phase conductive pipe (132) protruding from the stator core (20); a neutral conductor (240) that is electrically conductive and connected to one end of the second U-phase conductive pipe (112), one end of the second V-phase conductive pipe (122), and one end of the second W-phase conductive pipe (132), which are protruding from the stator core (20); one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from leaking out from a portion where the heat medium flows through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from contacting the stator core (20); a second heat medium flow member (320) through which a heat medium can flow, which is disposed on the other side of the stator core (20), and which prevents the heat medium flowing through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from leaking out from a portion where the heat medium flows through the first U-phase conductive pipe (111), the second U-phase conductive pipe (112), the first V-phase conductive pipe (121), the second V-phase conductive pipe (122), the first W-phase conductive pipe (131), and the second W-phase conductive pipe (132) from contacting the stator core (20); The electrical energy to mechanical energy converter has the following structure.

[0009] The second aspect is a stator core (20) having a plurality of teeth projecting from a base portion; a plurality of U-phase conductive pipes (111, 112, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) to a length greater than a thickness of the stator core (20); a plurality of U-phase connectors (211, 2121, 2122) that are electrically conductive and connected to one end or the other end of the plurality of U-phase conductive pipes (111, 112, . . . ) protruding from the stator core (20); a U-phase wire (11) that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes (111, 112, . . . ) that is not connected to the U-phase connector; a plurality of V-phase conductive pipes (121, 122, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) with a length greater than a thickness of the stator core (20); a plurality of V-phase connectors (221, 2221, 2222) that are electrically conductive and connected to one end or the other end of the plurality of V-phase conductive pipes (121, 122, ...) protruding from the stator core (20); a V-phase wire (12) that is electrically conductive and is connected to one end of one of the plurality of V-phase conductive pipes (121, 122, ...), the one end of which is not connected to the V-phase connector; a plurality of W-phase conductive pipes (131, 132, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) to a length greater than a thickness of the stator core (20); a plurality of W-phase connectors (231, 2321, 2322) that are electrically conductive and connected to one end or the other end of the plurality of W-phase conductive pipes (131, 132, ...) protruding from the stator core (20); a W-phase wire (13) that is electrically conductive and is connected to one end of one of the W-phase conductive pipes (131, 132, ...), the W-phase wire being not connected to the W-phase connector at one end thereof; a neutral conductor (240) that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes (111, 112,...), to which the U-phase connector is not connected and to which the U-phase wire (11) is not connected, one end of one of the plurality of V-phase conductive pipes (121, 122,...), to which the V-phase connector is not connected and to which the V-phase wire (12) is not connected, and one end of one of the plurality of W-phase conductive pipes (131, 132,...), to which the W-phase connector is not connected and to which the W-phase wire (13) is not connected; one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from leaking out from a portion where the heat medium flows through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from contacting the stator core (20); a second heat medium flow member (320) through which a heat medium can flow, which is disposed on the other side of the stator core (20) and prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from leaking to the outside from a portion where the heat medium flows in contact with the stator core (20); The electrical energy to mechanical energy converter has the following structure.

[0010] The third aspect is a stator core (20) having a plurality of teeth projecting from a base portion; a plurality of U-phase conductive pipes (111, 112, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) to a length greater than a thickness of the stator core (20); a plurality of U-phase connectors (211, 2121, 2122) that are electrically conductive and connected to one end or the other end of the plurality of U-phase conductive pipes (111, 112, . . . ) protruding from the stator core (20); a U-phase wire (11) that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes (111, 112, . . . ), the U-phase connector being connected to both one end and the other end of the U-phase conductive pipe; a plurality of V-phase conductive pipes (121, 122, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) with a length greater than a thickness of the stator core (20); a plurality of V-phase connectors (221, 2221, 2222) that are electrically conductive and connected to one end or the other end of the plurality of V-phase conductive pipes (121, 122, ...) protruding from the stator core (20); a V-phase wire (12) that is electrically conductive and is connected to one end of one of the plurality of V-phase conductive pipes (121, 122, ...), the V-phase connector being connected to both one end and the other end of the V-phase conductive pipe; a plurality of W-phase conductive pipes (131, 132, ...) that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core (20) to a length greater than a thickness of the stator core (20); a plurality of W-phase connectors (231, 2321, 2322) that are electrically conductive and connected to one end or the other end of the plurality of W-phase conductive pipes (131, 132, ...) protruding from the stator core (20); a W-phase wire (13) that is electrically conductive and is connected to one end of one of the plurality of W-phase conductive pipes (131, 132, ...), the W-phase connector being connected to both one end and the other end of the W-phase conductive pipe; a neutral conductor (240) that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes (111, 112,...), the U-phase connector of which is connected only to the other end of the plurality of U-phase conductive pipes (111, 112,...), one end of one of the plurality of V-phase conductive pipes (121, 122,...), the V-phase connector of which is connected only to the other end of the plurality of V-phase conductive pipes (121, 122,...), and one end of one of the plurality of W-phase conductive pipes (131, 132,...), the W-phase connector of which is connected only to the other end of the plurality of W-phase conductive pipes; one heat medium flow member (310) through which a heat medium can flow, which is disposed on one side of the stator core (20), and which prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from leaking out from a portion where the heat medium flows through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from contacting the stator core (20); a second heat medium flow member (320) through which a heat medium can flow, which is disposed on the other side of the stator core (20) and prevents the heat medium flowing through the plurality of U-phase conductive pipes (111, 112, . . .), the plurality of V-phase conductive pipes (121, 122, . . .), and the plurality of W-phase conductive pipes (131, 132, . . .) from leaking to the outside from a portion where the heat medium flows in contact with the stator core (20); The electrical energy to mechanical energy converter has the following structure.

[0011] A fourth aspect is an electrical energy-mechanical energy converter according to any one of claims 1 to 3 of any one of the first to third aspects, a sealant provided on the inner circumferential side of the stator core (20) to seal spaces between the teeth; It is an electrical energy to mechanical energy converter.

[0012] A fifth aspect is the electrical energy to mechanical energy converter of the fourth aspect, The sealing material is a coating material applied to the inner peripheral side of the stator core (20). It is an electrical energy to mechanical energy converter.

[0013] A sixth aspect is the electrical energy to mechanical energy converter of the fourth aspect, The sealing material is a slot sealing member (70) arranged on the inner circumferential side of the stator core (20). It is an electrical energy to mechanical energy converter.

[0014] A seventh aspect is the electrical energy to mechanical energy converter of the fourth aspect, One of the heat medium flow members (310) is connected to one of the flow pipes (331) through which the heat medium flows; The other heat medium flow member (320) is connected to the other heat medium flow pipe (332) through which the heat medium flows. It is an electrical energy to mechanical energy converter.

[0015] An eighth aspect is the electrical energy-mechanical energy converter of the second or third aspect, The inside of the one heat medium flow member (310) is divided into two sections by a pair of partitions (3100), one of the sections is connected to one of the flow pipes (331) through which the heat medium flows, and the other section is connected to the other of the flow pipes (332) through which the heat medium flows, and some of the plurality of conductive pipes are arranged on one section side and the rest are arranged on the other section side. It is an electrical energy to mechanical energy converter. [Effects of the Invention]

[0016] According to this aspect, high cooling performance can be obtained and productivity is also excellent. [Brief explanation of the drawings]

[0017] [Figure 1] Figure 1 shows the stator of the prototype electrical energy-mechanical energy converter. [Figure 2] FIG. 2 is a diagram showing an example of a conductive tube. [Figure 3] FIG. 3 is an exploded view showing an example of a rotating electric machine. [Figure 4] FIG. 4 is an exploded view showing an example of a rotating electric machine. [Figure 5] FIG. 5 is an assembly diagram of the rotating electric machine shown in FIGS. [Figure 6] FIG. 6 is a development view in which the rotating electric machine shown in FIGS. 3 and 4 is modeled. [Figure 7] FIG. 7 is a diagram for explaining the flow of the heat medium in the model development diagram shown in FIG. [Figure 8] FIG. 8 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 9] FIG. 9 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 10] FIG. 10 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 11] FIG. 11 is an exploded view showing a second embodiment of the rotating electric machine. [Figure 12] FIG. 12 is an assembly diagram of the rotating electrical machine shown in FIG. [Figure 13] FIG. 13 is a development view of a model of the rotating electrical machine shown in FIG. [Figure 14] FIG. 14 is a development view of a model of the rotating electric machine of the third embodiment. [Figure 15] FIG. 15 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 16] FIG. 16 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 17] FIG. 17 is a development view of a model of the rotating electric machine of the fourth embodiment. [Figure 18]FIG. 18 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 19] FIG. 19 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 20] FIG. 20 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 21] FIG. 21 is a development view of a model of the rotating electric machine of the fifth embodiment. [Figure 22] FIG. 22 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 23] FIG. 23 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 24] FIG. 24 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 25] FIG. 25 is a development view of a model of the rotating electric machine of the sixth embodiment. [Figure 26] FIG. 26 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 27] FIG. 27 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 28] FIG. 28 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 29] FIG. 29 is a development view of a model of the rotating electric machine of the seventh embodiment. [Figure 30] FIG. 30 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 31] FIG. 31 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 32]FIG. 32 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 33] FIG. 33 is a development view of a model of the rotating electric machine of the eighth embodiment. [Figure 34] FIG. 34 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 35] FIG. 35 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 36] FIG. 36 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 37] FIG. 37 is a development view of a model of the rotating electric machine of the ninth embodiment. [Figure 38] FIG. 38 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in FIG. [Figure 39] FIG. 39 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in FIG. [Figure 40] FIG. 40 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in FIG. [Figure 41] FIG. 41 is an exploded view showing a rotating electric machine according to a tenth embodiment. [Figure 42] FIG. 42 is a diagram showing an example of a cylindrical conductive tube. [Figure 43] FIG. 43 shows an example of a conductive tube having multiple passages formed therein. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0019] (First embodiment) Figure 1 shows the stator of the prototype electrical energy-mechanical energy converter.

[0020] In the following description, unless otherwise specified, the electrical energy-mechanical energy converter will be described as a rotating electrical machine that functions as an electric motor or a generator.

[0021] Fig. 1 shows a stator core, which is a characteristic configuration of a rotating electric machine according to this embodiment. Note that Fig. 1 shows a stator core used in an inner rotor type rotating electric machine, but this is just one example. The gist of the present invention may also be applied to an outer rotor type rotating electric machine.

[0022] As shown in Fig. 1, stator core 20 is cylindrical and has a structure in which a plurality of teeth 2001, 2002, ... are protruding from the inner peripheral wall of a base portion. In Fig. 1, 192 teeth are protruding. Stator core 20 is formed by laminating thin electromagnetic steel sheets.

[0023] FIG. 2 is a diagram showing an example of a conductive tube.

[0024] The conductive pipe 100 is electrically conductive and allows a heat transfer medium to flow through it. The surface is insulated with an insulating varnish or the like. The heat transfer medium flows through the inner periphery, and this inner periphery may also be insulated with an insulating varnish or the like. While a flat conductive pipe 100 is shown in FIG. 2 as an example, it may also be cylindrical.

[0025] The conductive pipe 100 is disposed in the spaces (slots) between the teeth of the stator core 20. Since the conductive pipe 100 is longer than the thickness of the stator core 20, it protrudes on both sides of the stator core 20 when disposed in the slots of the stator core 20.

[0026] 3 and 4 are exploded views showing an example of a rotating electric machine.

[0027] FIG. 1 illustrates a stator core 20 with 192 protruding teeth. 192 conductive pipes are arranged in the spaces (slots) between these teeth to form a rotating electric machine. However, illustrating such a specific structure would be extremely complicated and cumbersome. Therefore, for ease of understanding, the following explanation will be given using simplified structures. However, these are not mere models. Of course, they also function.

[0028] The rotating electric machine 1 shown in Figures 3 and 4 has a structure in which 12 teeth are protruded from a stator core 20, and 12 conductive pipes are arranged in the spaces (slots) between the teeth. The rotor 50 is a four-pole type, and the rotating electric machine of Figures 3 and 4 is a 12N4P type.

[0029] The stator core 20 is formed by laminating thin electromagnetic steel sheets. The stator core 20 has 12 teeth protruding from the inner peripheral wall of the base portion. Twelve conductive tubes 111, 112, etc. are arranged in the spaces (slots) between the teeth. A coating material is applied to the inner peripheral side of the stator core 20 to seal the spaces (slots) between the teeth. The conductive tubes are longer than the thickness of the stator core 20, so when arranged in the slots of the stator core 20, they protrude on both sides of the stator core 20. Connectors 211, 221, etc. are connected to these protruding portions, allowing electrical current to flow between specific conductive tubes. Details will be described later.

[0030] Furthermore, heat medium flow members 310 and 320 are arranged on both sides of the stator core 20.

[0031] The heat medium flow member 310 has a flow path through which the heat medium flows. The flow path is divided into two by a pair of partitions 3100. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to one of the sections (first heat medium flow section 3101). A second heat medium flow pipe 332 for supplying or discharging the heat medium is connected to the other section (second heat medium flow section 3102). The heat medium flow member 310 is fixed to the stator core 20 in a liquid-tight manner so that the heat medium flowing inside does not leak to the outside.

[0032] A flow path through which the heat medium flows is formed in the heat medium flow member 320. The heat medium flow member 320 is fixed to the stator core 20 in a liquid-tight manner so that the heat medium flowing inside does not leak to the outside.

[0033] Of the 12 conductive pipes, a U-phase wire 11 is connected to one of the U-phase conductive pipes. Of the 12 conductive pipes, a V-phase wire 12 is connected to one of the V-phase conductive pipes. Of the 12 conductive pipes, a W-phase wire 13 is connected to one of the W-phase conductive pipes.

[0034] 5A and 5B are assembly diagrams of the rotating electrical machine shown in FIGS. 3 and 4, with FIG. 5A being a view seen from an oblique left side and FIG. 5B being a view seen from an oblique right side. 5(A) and 5(B), it can be seen that heat medium flow members 310, 320 are arranged on both sides of the stator core 20. Furthermore, FIG. 5(B) shows that the heat medium flow member 310 is provided with a first heat medium flow pipe 331 and a second heat medium flow pipe 332. It can also be seen that the U-phase wire 11, the V-phase wire 12, and the W-phase wire 13 protrude. Furthermore, the heat medium flow members 310, 320 also serve as motor housings, and are bolted to the stator core 20 to be in close contact with the stator core 20.

[0035] FIG. 6 is a development view in which the rotating electric machine shown in FIGS. 3 and 4 is modeled.

[0036] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. In Fig. 6, from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0037] Conductive tubes are arranged in the spaces (slots) between each tooth. A U-phase first conductive tube 111 is arranged in the space (slot) between the first tooth 2001 and the second tooth 2002. A V-phase fourth conductive tube 124 is arranged in the space (slot) between the second tooth 2002 and the third tooth 2003. A W-phase third conductive tube 133 is arranged in the space (slot) between the third tooth 2003 and the fourth tooth 2004. A U-phase second conductive tube 112 is arranged in the space (slot) between the fourth tooth 2004 and the fifth tooth 2005. A V-phase first conductive tube 121 is arranged in the space (slot) between the fifth tooth 2005 and the sixth tooth 2006. A W-phase fourth conductive tube 134 is arranged in the space (slot) between the sixth tooth 2006 and the seventh tooth 2007. A U-phase third conductor 113 is disposed in a space (slot) between the seventh teeth 2007 and the eighth teeth 2008. A V-phase second conductor 122 is disposed in a space (slot) between the eighth teeth 2008 and the ninth teeth 2009. A W-phase first conductor 131 is disposed in a space (slot) between the ninth teeth 2009 and the tenth teeth 2010. A U-phase fourth conductor 114 is disposed in a space (slot) between the tenth teeth 2010 and the eleventh teeth 2011. A V-phase third conductor 123 is disposed in a space (slot) between the eleventh teeth 2011 and the twelfth teeth 2012. A W-phase second conductor 132 is disposed in a space (slot) between the twelfth teeth 2012 and the first teeth 2001.

[0038] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. The interior of the one heat medium flow member 310 is divided into two sections by a pair of partitions 3100. A first heat medium flow pipe 331 for supplying or discharging the heat medium is connected to one section (first heat medium flow section 3101). A second heat medium flow pipe 332 for supplying or discharging the heat medium is connected to the other section (second heat medium flow section 3102).

[0039] The other heat medium flow member 320 is disposed below the stator core 20 (on the other end side).

[0040] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0041] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0042] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0043] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0044] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, and the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123 are electrically connected.

[0045] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0046] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0047] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0048] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0049] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0050] Fig. 7 is a diagram for explaining the flow of the heat medium in the model development diagram shown in Fig. 6. The arrows indicate the direction of the heat medium flow.

[0051] The heat medium supplied from the first heat medium flow pipe 331 flows from the first heat medium flow section 3101 of one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the V-phase fourth conductive pipe 124, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, and the W-phase fourth conductive pipe 134 to the other heat medium flow member 320. The heat medium then flows through any one of the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase fourth conductive pipe 114, the V-phase third conductive pipe 123, and the W-phase second conductive pipe 132 to the second heat medium flow section 3102 of one heat medium flow member 310 and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0052] Next, the flow of electricity will be described. Fig. 8 is a diagram illustrating the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Fig. 6. The arrows indicate the direction of electricity flow.

[0053] First, a case where electricity flows from U phase wire 11 to V phase wire 12 will be described. Electricity entering through the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end side first connector 2121 → U-phase second conducting pipe 112 → U-phase one end side connector 211 → U-phase third conducting pipe 113 → U-phase other end side second connector 2122 → U-phase fourth conducting pipe 114 → neutral wire connector 240 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side connector 221 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0054] Fig. 9 is a diagram illustrating the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 6. The arrows indicate the direction of electricity flow.

[0055] Next, a case where electricity flows from V phase wire 12 to W phase wire 13 will be described. Electricity entering through the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conductor 121 → V-phase other end first connector 2221 → V-phase second conductor 122 → V-phase one end connector 221 → V-phase third conductor 123 → V-phase other end second connector 2222 → V-phase fourth conductor 124 → neutral wire connector 240 → W-phase fourth conductor 134 → W-phase other end second connector 2322 → W-phase third conductor 133 → W-phase one end connector 231 → W-phase second conductor 132 → W-phase other end first connector 2321 → W-phase first conductor 131 → W-phase wire 13.

[0056] Fig. 10 is a diagram illustrating the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 6. The arrow indicates the direction of electricity flow.

[0057] Next, a case where electricity flows from W-phase wire 13 to U-phase wire 11 will be described. Electricity entering through the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductor 131 → W-phase other end first connector 2321 → W-phase second conductor 132 → W-phase one end connector 231 → W-phase third conductor 133 → W-phase other end second connector 2322 → W-phase fourth conductor 134 → neutral wire connector 240 → U-phase fourth conductor 114 → U-phase other end second connector 2122 → U-phase third conductor 113 → U-phase one end connector 211 → U-phase second conductor 112 → U-phase other end first connector 2121 → U-phase first conductor 111 → U-phase wire 11.

[0058] According to the present embodiment described above, the heat transfer medium flows inside each conductive pipe, and therefore the cooling performance is excellent.

[0059] Furthermore, each conductive tube is placed in the space (slot) between the teeth of stator core 20, and a coating material is applied to the inner periphery of stator core 20 so as to seal the space (slot) between the teeth. Heat medium flow members 310, 320 are placed on both sides of stator core 20 and fastened with bolts to be tightly attached to stator core 20. This structure eliminates the need to wind conductive wires around the teeth as in general rotating electrical machines, resulting in excellent productivity.

[0060] Furthermore, the heat medium is supplied from the first heat medium flow pipe 331 provided in one of the heat medium flow members 310, flows from the first heat medium flow section 3101 through one of the conductive pipes, reaches the other heat medium flow member 320, flows through another conductive pipe, reaches the second heat medium flow section 3102 of the one heat medium flow member 310, and is discharged from the second heat medium flow pipe 332. In this way, since both the supply point and the discharge point of the heat medium are provided in one of the heat medium flow members 310, the rotating electric machine of this embodiment has excellent mountability when installed in equipment.

[0061] Furthermore, since each connector is disposed inside the heat medium flow member, it is cooled by the heat medium flowing through the heat medium flow member, resulting in excellent cooling performance.

[0062] Furthermore, since each connector is disposed inside the heat transfer medium flow member and is not exposed to the outside, it is possible to prevent foreign matter from getting between the connectors, and maintenance is easy.

[0063] (Second embodiment) FIG. 11 is an exploded view showing a second embodiment of the rotating electric machine. In the following description, parts that perform the same functions as those described above will be assigned the same reference numerals, and duplicated explanations will be omitted where appropriate.

[0064] In the second embodiment, the shapes of one heat medium flow member 310 and the other heat medium flow member 320 are different from those of the first embodiment. That is, while the interior of one heat medium flow member 310 in the first embodiment is divided into two sections by a pair of partitions 3100, one heat medium flow member 310 in this second embodiment does not have a partition. Further, one heat medium flow member 310 in the second embodiment is connected to a first heat medium flow pipe 331 through which the heat medium flows, but is not connected to a second heat medium flow pipe 332 through which the heat medium flows.

[0065] The second heat medium flow pipe 332 is connected to the other heat medium flow member 320 .

[0066] 12A and 12B are assembly diagrams of the rotating electrical machine shown in FIG. 11, with FIG. 12A being a view seen from the diagonal left, and FIG. 12B being a view seen from the diagonal right. 12(A) shows that the other heat medium flow member 320 is provided with a second heat medium flow pipe 332. Also, FIG. 12(B) shows that one heat medium flow member 310 is provided with a first heat medium flow pipe 331.

[0067] Fig. 13 is a development view of a model of the rotating electrical machine shown in Fig. 11. The arrows indicate the direction of flow of the heat medium.

[0068] Conductive tubes are arranged in the spaces (slots) between the teeth of the stator core 20. The arrangement order of these teeth and conductive tubes, the connection configuration of the connectors, etc. are the same as those in the first embodiment, so a description thereof will be omitted.

[0069] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0070] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0071] The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the V-phase fourth conductive pipe 124, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, the W-phase fourth conductive pipe 134, the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase fourth conductive pipe 114, the V-phase third conductive pipe 123, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0072] As described above, the second embodiment also has excellent cooling performance because the heat medium flows inside each conductive pipe. In particular, in the second embodiment, the heat medium is supplied from the first heat medium flow pipe 331 provided in one heat medium flow member 310, flows through one of the conductive pipes, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. As the heat medium flows a short distance, the cooling performance is even better than in the first embodiment.

[0073] In addition, since all the heat transfer medium flows in one direction (from top to bottom in FIG. 13), the flow resistance of the heat transfer medium is small, and the output of heat transfer medium supply equipment such as pumps can be kept low.

[0074] (Third embodiment) FIG. 14 is a development view of a model of the rotating electric machine of the third embodiment.

[0075] The rotating electric machine of the third embodiment differs from the rotating electric machine of the second embodiment in the way the conductive pipes are connected by connectors. The arrangement of the teeth and conductive pipes is the same as in the first and second embodiments, so a description thereof will be omitted. Furthermore, the configuration of the heat medium flow member and the flow of the heat medium are the same as in the second embodiment, so a description thereof will be omitted.

[0076] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. A U-phase one-end connector 211 is connected to one end of the U-phase first conductive pipe 111 and one end of the U-phase third conductive pipe 113, and the U-phase first conductive pipe 111 and the U-phase third conductive pipe 113 are electrically connected to each other.

[0077] A U-phase other end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, and the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112 are electrically connected.

[0078] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0079] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. A V-phase one-end connector 221 is connected to one end of the V-phase first conductive pipe 121 and one end of the V-phase third conductive pipe 123, and the V-phase first conductive pipe 121 and the V-phase third conductive pipe 123 are electrically connected to each other.

[0080] A V-phase other end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, and the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122 are electrically connected.

[0081] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0082] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. A W-phase one-end connector 231 is connected to one end of the W-phase first conductive pipe 131 and one end of the W-phase third conductive pipe 133, and the W-phase first conductive pipe 131 and the W-phase third conductive pipe 133 are electrically connected to each other.

[0083] A W-phase other end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, and the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132 are electrically connected.

[0084] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0085] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the U-phase fourth conductive pipe 114, one end of the V-phase second conductive pipe 122, one end of the V-phase fourth conductive pipe 124, one end of the W-phase second conductive pipe 132, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134.

[0086] Next, we will explain the flow of electricity from the U phase wire to the V phase wire. The arrows indicate the direction of the electricity flow. Electricity entering through U phase wire 11 branches into two. In the first embodiment and others, electricity flows from U phase wire to V phase wire without branching, which is a series connection type. In contrast, in this third embodiment, electricity branches and then merges, which is a parallel connection type.

[0087] One branched flow flows from the U-phase one end connector 211 → the U-phase third conductive pipe 113 → the U-phase other end second connector 2122 → the U-phase fourth conductive pipe 114 → the neutral wire connector 240 → the V-phase second conductive pipe 122 → the V-phase other end first connector 2221 → the V-phase first conductive pipe 121 → the V-phase wire 12.

[0088] The other flow passes through the U-phase first conductive pipe 111, the U-phase other end side first connector 2121, the U-phase second conductive pipe 112, and the neutral wire connector 240, and then branches into two. One of the current flows from the V-phase second conducting pipe 122 → the V-phase other end side first connector 2221 → the V-phase first conducting pipe 121 → the V-phase wire 12 . The other current flows from the V-phase fourth conducting pipe 124 → the V-phase other end side second connector 2222 → the V-phase third conducting pipe 123 → the V-phase one end side connector 221 → the V-phase wire 12 .

[0089] Fig. 15 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 14. The arrows indicate the direction of electricity flow.

[0090] Next, a case where electricity flows from V phase wire 12 to W phase wire 13 will be described. The electricity coming in from V-phase wire 12 branches into two. One flow is from the V-phase one end connector 221 → the V-phase third conducting pipe 123 → the V-phase other end second connector 2222 → the V-phase fourth conducting pipe 124 → the neutral wire connector 240 → the W-phase fourth conducting pipe 134 → the W-phase other end second connector 2322 → the W-phase third conducting pipe 133 → the W-phase one end connector 231 → the W-phase wire 13.

[0091] The other flow passes through the V-phase first conductive pipe 121, the V-phase other end side first connector 2221, the V-phase second conductive pipe 122, and the neutral wire connector 240, and then branches into two. One of the current flows from the W-phase second conductive pipe 132 → the W-phase other end side first connector 2321 → the W-phase first conductive pipe 131 → the W-phase wire 13 . The other current flows from the W-phase fourth conducting pipe 134 → the W-phase other end side second connector 2322 → the W-phase third conducting pipe 133 → the W-phase one end side connector 231 → the W-phase wire 13 .

[0092] Fig. 16 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 14. The arrow indicates the direction of electricity flow.

[0093] Next, a case where electricity flows from W-phase wire 13 to U-phase wire 11 will be described. The electricity coming in from W phase wire 13 branches into two. One flow is from the W-phase one end connector 231 → the W-phase third conductive pipe 133 → the W-phase other end second connector 2322 → the W-phase fourth conductive pipe 134 → the neutral wire connector 240 → the U-phase second conductive pipe 112 → the U-phase other end first connector 2121 → the U-phase first conductive pipe 111 → the U-phase wire 11.

[0094] The other flow passes through the W-phase first conductive pipe 131, the W-phase other end side first connector 2321, the W-phase second conductive pipe 132, and the neutral wire connector 240, and then branches into two. One of the current flows from the U-phase second conductive pipe 112 → the U-phase other end side first connector 2121 → the U-phase first conductive pipe 111 → the U-phase wire 11 . The other current flows from the U-phase fourth conducting pipe 114 → the U-phase other end side second connector 2122 → the U-phase third conducting pipe 113 → the U-phase one end side connector 211 → the U-phase wire 11 .

[0095] According to the third embodiment described above, the heat transfer medium flows inside each conductive tube, and therefore the cooling performance is excellent.

[0096] For the same current value, the type of this third embodiment (parallel connection type) generates one-quarter the heat compared to the series connection type like the first embodiment. For the same voltage and output, the parallel connection type has twice the rotation speed compared to the series connection type. Therefore, to achieve the same rotation speed, the motor length must be doubled, resulting in approximately half the heat generation. If a rotation speed twice as high as the series connection type is acceptable, the heat generation is one-quarter for the same voltage, output, and motor length. In this way, heat generation can be kept low. Conversely, this can also be said to mean that for the same motor size and weight, the rotation speed is doubled, but twice the current can be passed through.

[0097] (Fourth embodiment) FIG. 17 is a development view of a model of the rotating electric machine of the fourth embodiment.

[0098] The rotating electric machines of the above-described embodiments are all 12N4P type rotating electric machines in which 12 conductive tubes are arranged in the spaces (slots) between the teeth and a 4-pole rotor is used.

[0099] In contrast, the rotating electric machine of the fourth embodiment is a 12N8P type rotating electric machine in which 12 conductor pipes are arranged in the spaces (slots) between the teeth and an 8-pole rotor is used. Specifically, the rotating electric machine of the fourth embodiment differs from the rotating electric machine of the first embodiment in the order in which the conductor pipes are arranged and in the way the conductor pipes are connected by connectors.

[0100] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 17, from the left, they are: first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0101] Conductive tubes are arranged in the spaces (slots) between each tooth. A U-phase first conductive tube 111 is arranged in the space (slot) between the first tooth 2001 and the second tooth 2002. A U-phase second conductive tube 112 is arranged in the space (slot) between the second tooth 2002 and the third tooth 2003. A V-phase third conductive tube 123 is arranged in the space (slot) between the third tooth 2003 and the fourth tooth 2004. A V-phase fourth conductive tube 124 is arranged in the space (slot) between the fourth tooth 2004 and the fifth tooth 2005. A W-phase first conductive tube 131 is arranged in the space (slot) between the fifth tooth 2005 and the sixth tooth 2006. A W-phase second conductive tube 132 is arranged in the space (slot) between the sixth tooth 2006 and the seventh tooth 2007. A U-phase third conductor 113 is disposed in the space (slot) between the seventh tooth 2007 and the eighth tooth 2008. A U-phase fourth conductor 114 is disposed in the space (slot) between the eighth tooth 2008 and the ninth tooth 2009. A V-phase first conductor 121 is disposed in the space (slot) between the ninth tooth 2009 and the tenth tooth 2010. A V-phase second conductor 122 is disposed in the space (slot) between the tenth tooth 2010 and the eleventh tooth 2011. A W-phase third conductor 133 is disposed in the space (slot) between the eleventh tooth 2011 and the twelfth tooth 2012. A W-phase fourth conductor 134 is disposed in the space (slot) between the twelfth tooth 2012 and the first tooth 2001.

[0102] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0103] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0104] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0105] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0106] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0107] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0108] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, and the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123 are electrically connected.

[0109] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0110] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0111] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0112] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0113] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0114] (Flow of heat transfer medium) In FIG. 17, the arrows indicate the direction of flow of the heat transfer medium. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the U-phase second conductive pipe 112, the V-phase third conductive pipe 123, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase second conductive pipe 132, the U-phase third conductive pipe 113, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase second conductive pipe 122, the W-phase third conductive pipe 133, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0115] Next, the flow of electricity from the U phase wire to the V phase wire will be described. Fig. 18 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Fig. 17. The arrows indicate the direction of electricity flow. Electricity entering through the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end side first connector 2121 → U-phase second conducting pipe 112 → U-phase one end side connector 211 → U-phase third conducting pipe 113 → U-phase other end side second connector 2122 → U-phase fourth conducting pipe 114 → neutral wire connector 240 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side connector 221 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0116] Fig. 19 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 17. The arrows indicate the direction of electricity flow.

[0117] Next, a case where electricity flows from V phase wire 12 to W phase wire 13 will be described. Electricity entering through the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conductor 121 → V-phase other end first connector 2221 → V-phase second conductor 122 → V-phase one end connector 221 → V-phase third conductor 123 → V-phase other end second connector 2222 → V-phase fourth conductor 124 → neutral wire connector 240 → W-phase fourth conductor 134 → W-phase other end second connector 2322 → W-phase third conductor 133 → W-phase one end connector 231 → W-phase second conductor 132 → W-phase other end first connector 2321 → W-phase first conductor 131 → W-phase wire 13.

[0118] Fig. 20 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 17. The arrow indicates the direction of electricity flow.

[0119] Next, a case where electricity flows from W-phase wire 13 to U-phase wire 11 will be described. Electricity entering through the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductor 131 → W-phase other end first connector 2321 → W-phase second conductor 132 → W-phase one end connector 231 → W-phase third conductor 133 → W-phase other end second connector 2322 → W-phase fourth conductor 134 → neutral wire connector 240 → U-phase fourth conductor 114 → U-phase other end second connector 2122 → U-phase third conductor 113 → U-phase one end connector 211 → U-phase second conductor 112 → U-phase other end first connector 2121 → U-phase first conductor 111 → U-phase wire 11.

[0120] By configuring as in this embodiment described above, even in a 12N8P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0121] (Fifth embodiment) FIG. 21 is a development view of a model of the rotating electric machine of the fifth embodiment.

[0122] The rotating electric machine of the fifth embodiment is a 6N2P type rotating electric machine in which six conductive tubes are arranged in the spaces (slots) between the teeth and a two-pole rotor is used.

[0123] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 21, from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, and sixth teeth 2006.

[0124] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 is arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. A V-phase second conductive tube 122 is arranged in the spaces (slots) between the second teeth 2002 and the third teeth 2003. A W-phase first conductive tube 131 is arranged in the spaces (slots) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductive tube 112 is arranged in the spaces (slots) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductive tube 121 is arranged in the spaces (slots) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase second conductive tube 132 is arranged in the spaces (slots) between the sixth teeth 2006 and the first teeth 2001.

[0125] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0126] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0127] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. The other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112 are connected to a U-phase connector 210, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0128] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase connector 220 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0129] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase connector 230 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0130] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the V-phase second conductive pipe 122, and one end of the W-phase second conductive pipe 132, thereby electrically conducting the U-phase second conductive pipe 112, the V-phase second conductive pipe 122, and the W-phase second conductive pipe 132.

[0131] (Flow of heat transfer medium) In FIG. 21, the arrows indicate the direction of flow of the heat transfer medium. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, although the present embodiment has been described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, the heat medium may alternatively be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0132] Next, the flow of electricity will be described. Fig. 22 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Fig. 21. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering through the U-phase wire 11 flows from the U-phase wire 11 to the U-phase first conductor 111 to the U-phase connector 210 to the U-phase second conductor 112 to the neutral wire connector 240 to the V-phase second conductor 122 to the V-phase connector 220 to the V-phase first conductor 121 to the V-phase wire 12.

[0133] Fig. 23 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 21. The arrows indicate the direction of electricity flow.

[0134] Next, a case where electricity flows from V phase wire 12 to W phase wire 13 will be described. Electricity entering through the V-phase wire 12 flows from the V-phase wire 12 → V-phase first conductor 121 → V-phase connector 220 → V-phase second conductor 122 → neutral wire connector 240 → W-phase second conductor 132 → W-phase connector 230 → W-phase first conductor 131 → W-phase wire 13.

[0135] Fig. 24 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 21. The arrow indicates the direction of electricity flow.

[0136] Next, a case where electricity flows from W-phase wire 13 to U-phase wire 11 will be described. Electricity entering through the W-phase wire 13 flows from the W-phase wire 13 → W-phase first conductor 131 → W-phase connector 230 → W-phase second conductor 132 → neutral wire connector 240 → U-phase second conductor 112 → U-phase connector 210 → U-phase first conductor 111 → U-phase wire 11.

[0137] By configuring as in this embodiment described above, even in a 6N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0138] (Sixth embodiment) FIG. 25 is a development view of a model of the rotating electric machine of the sixth embodiment.

[0139] The rotating electric machine of the sixth embodiment is a 3N2P type rotating electric machine in which a conductive tube is arranged in the space (slot) between three teeth and which uses a two-pole rotor.

[0140] A plurality of teeth are provided protruding from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 25, from the left, there are first teeth 2001, second teeth 2002, and third teeth 2003.

[0141] Conductive tubes are placed in the spaces (slots) between each tooth. A U-phase second conductor 112 and a V-phase first conductor 121 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. In FIG. 25 , the U-phase second conductor 112 is arranged on the first teeth 2001 side, and the V-phase first conductor 121 is arranged on the second teeth 2002 side. However, conversely, the V-phase first conductor 121 may be arranged on the first teeth 2001 side, and the U-phase second conductor 112 may be arranged on the second teeth 2002 side. However, from the standpoint of efficiency, it is preferable that the U-phase second conductor 112 is arranged on the first teeth 2001 side, and the V-phase first conductor 121 is arranged on the second teeth 2002 side, as shown in FIG. 25 . The same applies to the following. In the space (slot) between the second teeth 2002 and the third teeth 2003, the V-phase second conductive pipe 122 and the W-phase first conductive pipe 131 are arranged. In the space (slot) between the third teeth 2003 and the first teeth 2001, the W-phase second conductive pipe 132 and the U-phase first conductive pipe 111 are arranged.

[0142] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0143] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0144] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. The other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112 are connected to a U-phase connector 210, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0145] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase connector 220 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0146] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase connector 230 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0147] A neutral wire connector 240 is connected to one end of the U-phase second conductive pipe 112, one end of the V-phase second conductive pipe 122, and one end of the W-phase second conductive pipe 132, thereby electrically conducting the U-phase second conductive pipe 112, the V-phase second conductive pipe 122, and the W-phase second conductive pipe 132.

[0148] (Flow of heat transfer medium) In FIG. 25, the arrows indicate the direction of flow of the heat transfer medium. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the U-phase second conductive pipe 112, the V-phase first conductive pipe 121, the V-phase second conductive pipe 122, the W-phase first conductive pipe 131, and the W-phase second conductive pipe 132, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, although the present embodiment has been described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, the heat medium may alternatively be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0149] Next, the flow of electricity will be described. Fig. 26 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Fig. 25. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering through the U-phase wire 11 flows from the U-phase wire 11 to the U-phase first conductor 111 to the U-phase connector 210 to the U-phase second conductor 112 to the neutral wire connector 240 to the V-phase second conductor 122 to the V-phase connector 220 to the V-phase first conductor 121 to the V-phase wire 12.

[0150] Figure 27 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Figure 25. The arrows indicate the direction of electricity flow.

[0151] Next, a case where electricity flows from V phase wire 12 to W phase wire 13 will be described. Electricity entering through the V-phase wire 12 flows from the V-phase wire 12 → V-phase first conductor 121 → V-phase connector 220 → V-phase second conductor 122 → neutral wire connector 240 → W-phase second conductor 132 → W-phase connector 230 → W-phase first conductor 131 → W-phase wire 13.

[0152] Figure 28 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Figure 25. The arrow indicates the direction of electricity flow.

[0153] Next, a case where electricity flows from W-phase wire 13 to U-phase wire 11 will be described. Electricity entering through the W-phase wire 13 flows from the W-phase wire 13 → W-phase first conductor 131 → W-phase connector 230 → W-phase second conductor 132 → neutral wire connector 240 → U-phase second conductor 112 → U-phase connector 210 → U-phase first conductor 111 → U-phase wire 11.

[0154] By configuring as in this embodiment described above, even in a 3N2P type rotating electrical machine, it is possible to make the heat medium flow inside each conductive pipe, and excellent cooling performance is achieved.

[0155] (Seventh embodiment) FIG. 29 is a development view of a model of the rotating electric machine of the seventh embodiment.

[0156] The rotating electric machine of this seventh embodiment is a 12N4P type rotating electric machine in which conductive tubes are placed in the spaces (slots) between 12 teeth and which uses a four-pole rotor. Also, while the above embodiments are one-turn types in which electricity makes only one circuit around the teeth, this seventh embodiment is a two-turn type in which electricity makes two circuits around the teeth.

[0157] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 29, from the left, they are: first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, sixth teeth 2006, seventh teeth 2007, eighth teeth 2008, ninth teeth 2009, tenth teeth 2010, eleventh teeth 2011, and twelfth teeth 2012.

[0158] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 and a U-phase third conductive tube 113 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. Note that in FIG. 29 , the U-phase first conductive tube 111 is arranged on the first teeth 2001 side, and the U-phase third conductive tube 113 is arranged on the second teeth 2002 side. However, the U-phase third conductive tube 113 may be arranged on the first teeth 2001 side, and the U-phase first conductive tube 111 may be arranged on the second teeth 2002 side. The U-phase first conductive tube 111 and the U-phase third conductive tube 113 may be arranged so as to overlap each other in the front and rear. The same applies below. A V-phase sixth conductive tube 126 and a V-phase eighth conductive tube 128 are arranged in the spaces (slots) between the second teeth 2002 and the third teeth 2003. A W-phase fifth conductor 135 and a W-phase seventh conductor 137 are disposed in the spaces (slots) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductor 112 and a U-phase fourth conductor 114 are disposed in the spaces (slots) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductor 121 and a V-phase third conductor 123 are disposed in the spaces (slots) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase sixth conductor 136 and a W-phase eighth conductor 138 are disposed in the spaces (slots) between the sixth teeth 2006 and the seventh teeth 2007. A U-phase fifth conductor 115 and a U-phase seventh conductor 117 are disposed in the spaces (slots) between the seventh teeth 2007 and the eighth teeth 2008. A V-phase second conductor 122 and a V-phase fourth conductor 124 are disposed in the spaces (slots) between the eighth teeth 2008 and the ninth teeth 2009. A W-phase first conductor 131 and a W-phase third conductor 133 are disposed in the spaces (slots) between the ninth teeth 2009 and the tenth teeth 2010. A U-phase sixth conductor 116 and a U-phase eighth conductor 118 are disposed in the spaces (slots) between the tenth teeth 2010 and the eleventh teeth 2011. A V-phase fifth conductor 125 and a V-phase seventh conductor 127 are disposed in the spaces (slots) between the eleventh teeth 2011 and the twelfth teeth 2012.In the space (slot) between the twelfth tooth 2012 and the first tooth 2001, the W-phase second conductive pipe 132 and the W-phase fourth conductive pipe 134 are arranged.

[0159] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0160] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0161] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0162] A U-phase one-end first connector 2111 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0163] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0164] A U-phase one-end second connector 2112 is connected to one end of the U-phase fourth conductive pipe 114 and one end of the U-phase fifth conductive pipe 115, and the U-phase fourth conductive pipe 114 and the U-phase fifth conductive pipe 115 are electrically connected.

[0165] A U-phase other end third connector 2123 is connected to the other end of the U-phase fifth conductive pipe 115 and the other end of the U-phase sixth conductive pipe 116, and the U-phase fifth conductive pipe 115 and the U-phase sixth conductive pipe 116 are electrically connected.

[0166] A U-phase one-end third connector 2113 is connected to one end of the U-phase sixth conductive pipe 116 and one end of the U-phase seventh conductive pipe 117, and the U-phase sixth conductive pipe 116 and the U-phase seventh conductive pipe 117 are electrically connected.

[0167] The other end of the U-phase seventh conductive pipe 117 and the other end of the U-phase eighth conductive pipe 118 are connected to a U-phase other end fourth connector 2124, and the U-phase seventh conductive pipe 117 and the U-phase eighth conductive pipe 118 are electrically connected.

[0168] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0169] A V-phase one-end first connector 2211 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, and the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123 are electrically connected.

[0170] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0171] A V-phase one-end second connector 2212 is connected to one end of the V-phase fourth conductive pipe 124 and one end of the V-phase fifth conductive pipe 125, and the V-phase fourth conductive pipe 124 and the V-phase fifth conductive pipe 125 are electrically connected.

[0172] A V-phase other end third connector 2223 is connected to the other end of the V-phase fifth conductive pipe 125 and the other end of the V-phase sixth conductive pipe 126, and the V-phase fifth conductive pipe 125 and the V-phase sixth conductive pipe 126 are electrically connected.

[0173] A V-phase one-end third connector 2213 is connected to one end of the V-phase sixth conductive pipe 126 and one end of the V-phase seventh conductive pipe 127, and the V-phase sixth conductive pipe 126 and the V-phase seventh conductive pipe 127 are electrically connected.

[0174] A V-phase other end fourth connector 2224 is connected to the other end of the V-phase seventh conductive pipe 127 and the other end of the V-phase eighth conductive pipe 128, and the V-phase seventh conductive pipe 127 and the V-phase eighth conductive pipe 128 are electrically connected.

[0175] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0176] A W-phase one-end first connector 2311 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0177] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0178] A W-phase one-end second connector 2312 is connected to one end of the W-phase fourth conductive pipe 134 and one end of the W-phase fifth conductive pipe 135, and the W-phase fourth conductive pipe 134 and the W-phase fifth conductive pipe 135 are electrically connected.

[0179] A W-phase other end third connector 2323 is connected to the other end of the W-phase fifth conductive pipe 135 and the other end of the W-phase sixth conductive pipe 136, and the W-phase fifth conductive pipe 135 and the W-phase sixth conductive pipe 136 are electrically connected.

[0180] A W-phase one-end third connector 2313 is connected to one end of the W-phase sixth conductive pipe 136 and one end of the W-phase seventh conductive pipe 137, and the W-phase sixth conductive pipe 136 and the W-phase seventh conductive pipe 137 are electrically connected.

[0181] The other end of the W-phase seventh conductive pipe 137 and the other end of the W-phase eighth conductive pipe 138 are connected to a W-phase other end fourth connector 2324, and the W-phase seventh conductive pipe 137 and the W-phase eighth conductive pipe 138 are electrically connected.

[0182] A neutral wire connector 240 is connected to one end of the U-phase eighth conductive pipe 118, one end of the V-phase eighth conductive pipe 128, and one end of the W-phase eighth conductive pipe 138, thereby electrically connecting the U-phase eighth conductive pipe 118, the V-phase eighth conductive pipe 128, and the W-phase eighth conductive pipe 138.

[0183] (Flow of heat transfer medium) In FIG. 29, the arrows indicate the direction of heat transfer medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows through one heat medium flow member 310 to the U-phase first conducting pipe 111, the U-phase third conducting pipe 113, the V-phase sixth conducting pipe 126, the V-phase eighth conducting pipe 128, the W-phase fifth conducting pipe 135, the W-phase seventh conducting pipe 137, the U-phase second conducting pipe 112, the U-phase fourth conducting pipe 114, the V-phase first conducting pipe 121, the V-phase third conducting pipe 123, the W-phase sixth conducting pipe 136, the W-phase eighth conducting pipe 138 ... The heat medium flows through any of the U-phase seventh conductive pipe 115, the U-phase seventh conductive pipe 117, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the U-phase sixth conductive pipe 116, the U-phase eighth conductive pipe 118, the V-phase fifth conductive pipe 125, the V-phase seventh conductive pipe 127, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. Note that, in the present embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0184] Next, the flow of electricity will be described. Figure 30 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 29. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. The electricity entering through the U-phase wire 11 passes through the following path: U-phase wire 11 → U-phase first conductor 111 → U-phase other end side first connector 2121 → U-phase second conductor 112 → U-phase one end side first connector 2111 → U-phase third conductor 113 → U-phase other end side second connector 2122 → U-phase fourth conductor 114 → U-phase one end side second connector 2112 → U-phase fifth conductor 115 → U-phase other end side third connector 2123 → U-phase sixth conductor 116 → U-phase one end side third connector 2113 → U-phase seventh conductor 117 → U-phase other end side fourth connector 2124 → U-phase eighth conductor 118 → middle The current flows in the following order: V-phase wire connector 240 → V-phase eighth conducting pipe 128 → V-phase other end side fourth connector 2224 → V-phase seventh conducting pipe 127 → V-phase one end side third connector 2213 → V-phase sixth conducting pipe 126 → V-phase other end side third connector 2223 → V-phase fifth conducting pipe 125 → V-phase one end side second connector 2212 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side first connector 2211 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0185] Fig. 31 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Fig. 29. The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering through the V-phase wire 12 passes through the following path: V-phase wire 12 → V-phase first conductor 121 → V-phase other end side first connector 2221 → V-phase second conductor 122 → V-phase one end side first connector 2211 → V-phase third conductor 123 → V-phase other end side second connector 2222 → V-phase fourth conductor 124 → V-phase one end side second connector 2212 → V-phase fifth conductor 125 → V-phase other end side third connector 2223 → V-phase sixth conductor 126 → V-phase one end side third connector 2213 → V-phase seventh conductor 127 → V-phase other end side fourth connector 2224 → V-phase eighth conductor 128 → middle The current flows in the following order: W-phase wire connector 240 → W-phase eighth conducting pipe 138 → W-phase other end side fourth connector 2324 → W-phase seventh conducting pipe 137 → W-phase one end side third connector 2313 → W-phase sixth conducting pipe 136 → W-phase other end side third connector 2323 → W-phase fifth conducting pipe 135 → W-phase one end side second connector 2312 → W-phase fourth conducting pipe 134 → W-phase other end side second connector 2322 → W-phase third conducting pipe 133 → W-phase one end side first connector 2311 → W-phase second conducting pipe 132 → W-phase other end side first connector 2321 → W-phase first conducting pipe 131 → W-phase wire 13.

[0186] Fig. 32 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Fig. 29. The arrow indicates the direction of electricity flow. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. The electricity entering through the W-phase wire 13 passes through the following path: W-phase wire 13 → W-phase first conductor 131 → W-phase other end first connector 2321 → W-phase second conductor 132 → W-phase one end first connector 2311 → W-phase third conductor 133 → W-phase other end second connector 2322 → W-phase fourth conductor 134 → W-phase one end second connector 2312 → W-phase fifth conductor 135 → W-phase other end third connector 2323 → W-phase sixth conductor 136 → W-phase one end third connector 2313 → W-phase seventh conductor 137 → W-phase other end fourth connector 2324 → W-phase eighth conductor 138 → middle The current flows in the following order: U-phase wire connector 240 → U-phase eighth conducting tube 118 → U-phase other end side fourth connector 2124 → U-phase seventh conducting tube 117 → U-phase one end side third connector 2113 → U-phase sixth conducting tube 116 → U-phase other end side third connector 2123 → U-phase fifth conducting tube 115 → U-phase one end side second connector 2112 → U-phase fourth conducting tube 114 → U-phase other end side second connector 2122 → U-phase third conducting tube 113 → U-phase one end side first connector 2111 → U-phase second conducting tube 112 → U-phase other end side first connector 2121 → U-phase first conducting tube 111 → U-phase wire 11.

[0187] By configuring as in this embodiment described above, even in a two-turn 12N4P type rotating electrical machine, the heat transfer medium can flow inside each conductive tube, resulting in excellent cooling performance.

[0188] In addition, by using a two-turn type, high voltage is possible.

[0189] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but by increasing the number of conductive tubes placed in the spaces (slots) between the teeth, it is also possible to make it a three-turn type or a type with more turns.

[0190] (Eighth embodiment) FIG. 33 is a development view of a model of the rotating electric machine of the eighth embodiment.

[0191] The rotating electric machine of this eighth embodiment is a 6N2P type rotating electric machine in which conductive pipes are placed in the spaces (slots) between six teeth and which uses a two-pole rotor. Also, while the fifth embodiment was a one-turn type in which electricity makes only one circuit around the teeth, this eighth embodiment is a two-turn type in which electricity makes two circuits around the teeth.

[0192] A plurality of teeth are protruded from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 33, from the left, there are first teeth 2001, second teeth 2002, third teeth 2003, fourth teeth 2004, fifth teeth 2005, and sixth teeth 2006.

[0193] Conductive tubes are arranged in the spaces (slots) between the teeth. A U-phase first conductive tube 111 and a U-phase third conductive tube 113 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. Note that in FIG. 33 , the U-phase first conductive tube 111 is arranged on the first teeth 2001 side, and the U-phase third conductive tube 113 is arranged on the second teeth 2002 side. However, the U-phase third conductive tube 113 may be arranged on the first teeth 2001 side, and the U-phase second conductive tube 112 may be arranged on the second teeth 2002 side. The U-phase first conductive tube 111 and the U-phase third conductive tube 113 may be arranged so as to overlap each other in the front and rear. The same applies below. A V-phase second conductive tube 122 and a V-phase fourth conductive tube 124 are arranged in the spaces (slots) between the second teeth 2002 and the third teeth 2003. A W-phase first conductive tube 131 and a W-phase third conductive tube 133 are arranged in the spaces (slots) between the third teeth 2003 and the fourth teeth 2004. A U-phase second conductive tube 112 and a U-phase fourth conductive tube 114 are arranged in the spaces (slots) between the fourth teeth 2004 and the fifth teeth 2005. A V-phase first conductive tube 121 and a V-phase third conductive tube 123 are arranged in the spaces (slots) between the fifth teeth 2005 and the sixth teeth 2006. A W-phase second conductive tube 132 and a W-phase fourth conductive tube 134 are arranged in the spaces (slots) between the sixth teeth 2006 and the first teeth 2001.

[0194] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0195] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0196] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0197] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0198] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0199] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0200] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, and the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123 are electrically connected.

[0201] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0202] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0203] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0204] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0205] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0206] (Flow of heat transfer medium) In FIG. 33, the arrows indicate the direction of heat transfer medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the U-phase third conductive pipe 113, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase third conductive pipe 123, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0207] Next, the flow of electricity will be described. Figure 34 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 33. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering through the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end side first connector 2121 → U-phase second conducting pipe 112 → U-phase one end side connector 211 → U-phase third conducting pipe 113 → U-phase other end side second connector 2122 → U-phase fourth conducting pipe 114 → neutral wire connector 240 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side connector 221 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0208] Figure 35 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Figure 33. The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering through the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conductor 121 → V-phase other end first connector 2221 → V-phase second conductor 122 → V-phase one end connector 221 → V-phase third conductor 123 → V-phase other end second connector 2222 → V-phase fourth conductor 124 → neutral wire connector 240 → W-phase fourth conductor 134 → W-phase other end second connector 2322 → W-phase third conductor 133 → W-phase one end connector 231 → W-phase second conductor 132 → W-phase other end first connector 2321 → W-phase first conductor 131 → W-phase wire 13.

[0209] Figure 36 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Figure 33. The arrow indicates the direction of electricity flow. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. Electricity entering through the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductor 131 → W-phase other end first connector 2321 → W-phase second conductor 132 → W-phase one end connector 231 → W-phase third conductor 133 → W-phase other end second connector 2322 → W-phase fourth conductor 134 → neutral wire connector 240 → U-phase fourth conductor 114 → U-phase other end second connector 2122 → U-phase third conductor 113 → U-phase one end connector 211 → U-phase second conductor 112 → U-phase other end first connector 2121 → U-phase first conductor 111 → U-phase wire 11.

[0210] By configuring as in this embodiment described above, even in a two-turn, 6N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0211] In addition, by using a two-turn type, it is possible to increase the output.

[0212] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but by increasing the number of conductive tubes placed in the spaces (slots) between the teeth, it is also possible to make it a three-turn type or a type with more turns.

[0213] (Ninth embodiment) FIG. 37 is a development view of a model of the rotating electric machine of the ninth embodiment.

[0214] The rotating electric machine of this ninth embodiment is a 3N2P type rotating electric machine that uses a two-pole rotor with a conductive tube placed in the space (slot) between three teeth. Also, while the sixth embodiment was a one-turn type in which electricity makes only one circuit around the teeth, this ninth embodiment is a two-turn type in which electricity makes two circuits around the teeth.

[0215] A plurality of teeth are provided protruding from the inner peripheral wall of the base portion of the stator core 20. As shown in Fig. 37, from the left, there are first teeth 2001, second teeth 2002, and third teeth 2003.

[0216] Conductive tubes are placed in the spaces (slots) between each tooth. The U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, and the V-phase third conductive pipe 123 are arranged in the spaces (slots) between the first teeth 2001 and the second teeth 2002. Note that in Fig. 37, the U-phase second conductive pipe 112 and the U-phase fourth conductive pipe 114 are arranged on the first teeth 2001 side, and the V-phase first conductive pipe 121 and the V-phase third conductive pipe 123 are arranged on the second teeth 2002 side, but conversely, the V-phase first conductive pipe 121 and the V-phase third conductive pipe 123 may be arranged on the first teeth 2001 side, and the U-phase second conductive pipe 112 and the U-phase fourth conductive pipe 114 may be arranged on the second teeth 2002 side. However, from the viewpoint of efficiency, it is desirable that the U-phase second conductor 112 and the U-phase fourth conductor 114 are arranged on the side of the first teeth 2001, and the V-phase first conductor 121 and the V-phase third conductor 123 are arranged on the side of the second teeth 2002, as shown in Fig. 37. The same applies below. In the space (slot) between the second teeth 2002 and the third teeth 2003, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, and the W-phase third conductive pipe 133 are arranged. In the space (slot) between the third teeth 2003 and the first teeth 2001, the W-phase second conductive pipe 132, the W-phase fourth conductive pipe 134, the U-phase first conductive pipe 111, and the U-phase third conductive pipe 113 are arranged.

[0217] One heat medium flow member 310 is disposed above (on one end side of) the stator core 20. A first heat medium flow pipe 331 for supplying or discharging a heat medium is connected to one heat medium flow member 310.

[0218] The other heat medium flow member 320 is disposed below (on the other end side of) the stator core 20. A second heat medium flow pipe 332 for discharging or supplying the heat medium is connected to the other heat medium flow member 320.

[0219] The U-phase wire 11 is connected to one end of the U-phase first conductive pipe 111. The U-phase wire 11 is a solid conductor. A U-phase other-end first connector 2121 is connected to the other end of the U-phase first conductive pipe 111 and the other end of the U-phase second conductive pipe 112, thereby electrically connecting the U-phase first conductive pipe 111 and the U-phase second conductive pipe 112.

[0220] A U-phase one-end connector 211 is connected to one end of the U-phase second conductive pipe 112 and one end of the U-phase third conductive pipe 113, and the U-phase second conductive pipe 112 and the U-phase third conductive pipe 113 are electrically connected.

[0221] A U-phase other end second connector 2122 is connected to the other end of the U-phase third conductive pipe 113 and the other end of the U-phase fourth conductive pipe 114, and the U-phase third conductive pipe 113 and the U-phase fourth conductive pipe 114 are electrically connected.

[0222] The V-phase wire 12 is connected to one end of the V-phase first conductive pipe 121. The V-phase wire 12 is a solid conductor. A V-phase other-end first connector 2221 is connected to the other end of the V-phase first conductive pipe 121 and the other end of the V-phase second conductive pipe 122, thereby electrically connecting the V-phase first conductive pipe 121 and the V-phase second conductive pipe 122.

[0223] A V-phase one-end connector 221 is connected to one end of the V-phase second conductive pipe 122 and one end of the V-phase third conductive pipe 123, and the V-phase second conductive pipe 122 and the V-phase third conductive pipe 123 are electrically connected.

[0224] A V-phase other end second connector 2222 is connected to the other end of the V-phase third conductive pipe 123 and the other end of the V-phase fourth conductive pipe 124, and the V-phase third conductive pipe 123 and the V-phase fourth conductive pipe 124 are electrically connected.

[0225] The W-phase wire 13 is connected to one end of the W-phase first conductive pipe 131. The W-phase wire 13 is a solid conductor. A W-phase other-end first connector 2321 is connected to the other end of the W-phase first conductive pipe 131 and the other end of the W-phase second conductive pipe 132, thereby electrically connecting the W-phase first conductive pipe 131 and the W-phase second conductive pipe 132.

[0226] A W-phase one-end connector 231 is connected to one end of the W-phase second conductive pipe 132 and one end of the W-phase third conductive pipe 133, and the W-phase second conductive pipe 132 and the W-phase third conductive pipe 133 are electrically connected.

[0227] A W-phase other end second connector 2322 is connected to the other end of the W-phase third conductive pipe 133 and the other end of the W-phase fourth conductive pipe 134, and the W-phase third conductive pipe 133 and the W-phase fourth conductive pipe 134 are electrically connected.

[0228] A neutral wire connector 240 is connected to one end of the U-phase fourth conductive pipe 114, one end of the V-phase fourth conductive pipe 124, and one end of the W-phase fourth conductive pipe 134, thereby electrically conducting the U-phase fourth conductive pipe 114, the V-phase fourth conductive pipe 124, and the W-phase fourth conductive pipe 134.

[0229] (Flow of heat transfer medium) In FIG. 37, the arrows indicate the direction of heat transfer medium flow. The heat medium supplied from the first heat medium flow pipe 331 flows from one heat medium flow member 310 through any one of the U-phase first conductive pipe 111, the U-phase third conductive pipe 113, the U-phase second conductive pipe 112, the U-phase fourth conductive pipe 114, the V-phase first conductive pipe 121, the V-phase third conductive pipe 123, the V-phase second conductive pipe 122, the V-phase fourth conductive pipe 124, the W-phase first conductive pipe 131, the W-phase third conductive pipe 133, the W-phase second conductive pipe 132, and the W-phase fourth conductive pipe 134, reaches the other heat medium flow member 320, and is discharged from the second heat medium flow pipe 332. In this embodiment, the heat medium is described as being supplied from the first heat medium flow pipe 331 and discharged from the second heat medium flow pipe 332, but it may also be supplied from the second heat medium flow pipe 332 and discharged from the first heat medium flow pipe 331.

[0230] Next, the flow of electricity will be described. Figure 38 is a diagram for explaining the flow of electricity from the U-phase wire to the V-phase wire in the model development diagram shown in Figure 37. The arrows indicate the direction of electricity flow. First, the flow of electricity from the U-phase wire to the V-phase wire will be explained. Electricity entering through the U-phase wire 11 flows in the following order: U-phase wire 11 → U-phase first conducting pipe 111 → U-phase other end side first connector 2121 → U-phase second conducting pipe 112 → U-phase one end side connector 211 → U-phase third conducting pipe 113 → U-phase other end side second connector 2122 → U-phase fourth conducting pipe 114 → neutral wire connector 240 → V-phase fourth conducting pipe 124 → V-phase other end side second connector 2222 → V-phase third conducting pipe 123 → V-phase one end side connector 221 → V-phase second conducting pipe 122 → V-phase other end side first connector 2221 → V-phase first conducting pipe 121 → V-phase wire 12.

[0231] Figure 39 is a diagram for explaining the flow of electricity from the V-phase wire to the W-phase wire in the model development diagram shown in Figure 37. The arrows indicate the direction of electricity flow. Next, the flow of electricity from the V-phase wire to the W-phase wire will be described. Electricity entering through the V-phase wire 12 flows as follows: V-phase wire 12 → V-phase first conductor 121 → V-phase other end first connector 2221 → V-phase second conductor 122 → V-phase one end connector 221 → V-phase third conductor 123 → V-phase other end second connector 2222 → V-phase fourth conductor 124 → neutral wire connector 240 → W-phase fourth conductor 134 → W-phase other end second connector 2322 → W-phase third conductor 133 → W-phase one end connector 231 → W-phase second conductor 132 → W-phase other end first connector 2321 → W-phase first conductor 131 → W-phase wire 13.

[0232] Figure 40 is a diagram for explaining the flow of electricity from the W-phase wire to the U-phase wire in the model development diagram shown in Figure 37. The arrows indicate the direction of electricity flow. Next, the flow of electricity from the W-phase wire to the U-phase wire will be described. Electricity entering through the W-phase wire 13 flows in the following order: W-phase wire 13 → W-phase first conductor 131 → W-phase other end first connector 2321 → W-phase second conductor 132 → W-phase one end connector 231 → W-phase third conductor 133 → W-phase other end second connector 2322 → W-phase fourth conductor 134 → neutral wire connector 240 → U-phase fourth conductor 114 → U-phase other end second connector 2122 → U-phase third conductor 113 → U-phase one end connector 211 → U-phase second conductor 112 → U-phase other end first connector 2121 → U-phase first conductor 111 → U-phase wire 11.

[0233] By configuring as in this embodiment described above, even in a two-turn, 3N2P type rotating electrical machine, the heat transfer medium can flow inside each conductive pipe, resulting in excellent cooling performance.

[0234] In addition, by using a two-turn type, it is possible to increase the output.

[0235] In the description of this embodiment, a two-turn type has been used to avoid complicating the explanation, but by increasing the number of conductive tubes placed in the spaces (slots) between the teeth, it is also possible to make it a three-turn type or a type with more turns.

[0236] (Tenth embodiment) FIG. 41 is an exploded view showing a rotating electric machine according to a tenth embodiment. In the following description, parts that perform the same functions as those described above will be assigned the same reference numerals, and duplicated explanations will be omitted where appropriate.

[0237] In each of the above embodiments, after each conductive tube is placed in the space (slot) between the teeth of the stator core 20, the space (slot) between the teeth is sealed by applying a coating material to the inner peripheral side of the stator core 20. In contrast, the tenth embodiment differs from the second embodiment in that the space (slot) between the teeth is sealed by placing a slot sealing collar 70 on the inner peripheral side of the stator core 20.

[0238] According to this structure, the slot sealing collars 70 are disposed on the inner circumferential side of the stator core 20 to seal the spaces (slots) between the teeth, which provides even greater productivity than the second embodiment.

[0239] Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above embodiments.

[0240] For example, in each of the above embodiments, the stator core is cylindrical, has a plurality of teeth protruding from the inner peripheral wall of the base portion, and has a structure in which conductive tubes are arranged in spaces (slots) between the teeth. However, the stator core may be flat instead of cylindrical. The stator core may have a structure in which multiple teeth are protruded from the bottom surface, which serves as the base, and conductive tubes are placed in the spaces (slots) between the teeth. In this way, the present invention can be applied to a linear motor.

[0241] Furthermore, in each of the above embodiments, the conductive tube 100 has been described as being flat, but as shown in FIG. 42, it may be cylindrical.

[0242] Furthermore, as shown in FIG. 43, it may be of a type in which a plurality of passages are formed.

[0243] Furthermore, the type of rotating electric machine is not limited, and the present invention can be applied to, for example, an axial flux type rotating electric machine, an SR rotating electric machine, an induction rotating electric machine, a synchronous rotating electric machine, and the like. For example, by using liquid nitrogen or liquid helium as the heat transfer medium, a superconducting rotating electric machine can be created.

[0244] The heat transfer medium to be used may be a liquid insulating heat transfer medium, a gas such as air, or other suitable materials such as antifreeze, liquefied chlorofluorocarbons and halons, liquefied hydrocarbons, silicone oils, liquefied ammonia, liquefied nitrogen, liquefied hydrogen, liquefied rare gases, liquefied carbon dioxide, etc. For heat transfer mediums such as water, pure water with very low conductivity may be used, and additives such as corrosion inhibitors may be mixed in as appropriate.

[0245] Furthermore, by coating the inside of the conductive tube with an insulating film, it becomes possible to use a conductive heat medium, such as a water-based liquid.

[0246] By using a cryogenic heat medium such as liquid nitrogen or liquid helium as the heat medium and using a superconducting material for the conductive tube, a superconducting rotating electric machine can be made.

[0247] Furthermore, an ion exchange resin filter may be installed on the heat transfer medium path, which removes ions from the heat transfer medium, reduces the heat transfer medium's electrical conductivity, and increases its insulating properties, thereby minimizing electrical leakage in the unlikely event that a conductive heat transfer medium leaks.

[0248] As a method for supplying the heat medium, in addition to using power such as a pump to circulate the heat medium for cooling, a natural circulation system using gravity without using a pump, such as a heat pipe, may also be used.

[0249] There are various winding methods for motors, including concentrated winding, distributed winding, single-layer winding, two-layer winding, full-pitch winding, short-pitch winding, lap winding, concentric winding, and wave winding, and these are selected by combining various methods at the time of design.

[0250] In the above embodiment, the connector has the shape shown in Fig. 3. However, this shape is merely an example, and the shape of the connector is not critical. Furthermore, the connector may use a general conductor such as a magnet wire or a twisted wire.

[0251] If necessary, cooling from the outside of the stator core can also be performed.

[0252] The above embodiments can be combined as appropriate. [Explanation of symbols]

[0253] 1 Electrical energy-mechanical energy converter (rotating electric machine / linear motor) 11 U phase wire 111,112,... U phase conductive tube 210, 211, 2121, 2122 U-phase connector 12 V phase wire 121,122,... V phase conductive tube 220, 221, 2221, 2222 V phase connector 13 W phase wire 131,132,... W phase conductive tube 230, 231, 2321, 2322 W-phase connector 20 stator core 310,320 Heat medium flow member

Claims

1. a stator core having a plurality of teeth protruding from a base portion; a first U-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a second U-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a U-phase wire that is electrically conductive and connected to one end of the first U-phase conductive tube that protrudes from the stator core; a U-phase connector that is electrically conductive and is connected to the other end of the first U-phase conductive pipe protruding from the stator core and the other end of the second U-phase conductive pipe protruding from the stator core; a first V-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a second V-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a V-phase wire that is electrically conductive and connected to one end of the first V-phase conductive tube that protrudes from the stator core; a V-phase connector that is electrically conductive and is connected to the other end of the first V-phase conductive pipe protruding from the stator core and the other end of the second V-phase conductive pipe protruding from the stator core; a first W-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a second W-phase conductive pipe that is electrically conductive and allows a heat medium to flow therethrough, that is disposed in a space between the teeth, and that protrudes to both sides of the stator core by a length greater than a thickness of the stator core; a W-phase wire that is electrically conductive and connected to one end of the first W-phase conductive tube that protrudes from the stator core; a W-phase connector that is electrically conductive and is connected to the other end of the first W-phase conductive pipe protruding from the stator core and the other end of the second W-phase conductive pipe protruding from the stator core; a neutral conductor that is electrically conductive and connected to one end of the second U-phase conductive pipe, one end of the second V-phase conductive pipe, and one end of the second W-phase conductive pipe that protrude from the stator core; one heat medium flow member through which a heat medium can flow, which is disposed on one side of the stator core, and which prevents the heat medium flowing through the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, the second V-phase conductive pipe, the first W-phase conductive pipe, and the second W-phase conductive pipe from leaking out from a portion where the heat medium flows through the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, and the second W-phase conductive pipe, from contacting the stator core; another heat medium flow member through which a heat medium can flow, which is disposed on the other side of the stator core, and which prevents the heat medium flowing through the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, the second V-phase conductive pipe, the first W-phase conductive pipe, and the second W-phase conductive pipe from leaking out from a portion where the heat medium flows through the first U-phase conductive pipe, the second U-phase conductive pipe, the first V-phase conductive pipe, and the second W-phase conductive pipe, at a contact point with the stator core; An electrical energy to mechanical energy converter having:

2. a stator core having a plurality of teeth protruding from a base portion; a plurality of U-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of U-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of U-phase conductive tubes protruding from the stator core; a U-phase wire that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes that is not connected to the U-phase connector; a plurality of V-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of V-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of V-phase conductive tubes protruding from the stator core; a V-phase wire that is electrically conductive and is connected to one end of one of the plurality of V-phase conductive pipes that is not connected to the V-phase connector; a plurality of W-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of W-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of W-phase conductive tubes protruding from the stator core; a W-phase wire that is electrically conductive and is connected to one end of one of the plurality of W-phase conductive pipes that is not connected to the W-phase connector; a neutral conductor that is conductive and is connected to one end of one of the plurality of U-phase conductive pipes to which the U-phase connector and the U-phase wire are not connected, one end of one of the plurality of V-phase conductive pipes to which the V-phase connector and the V-phase wire are not connected, and one end of one of the plurality of W-phase conductive pipes to which the W-phase connector and the W-phase wire are not connected; one heat medium flow member through which a heat medium can flow, the one heat medium flow member being disposed on one side of the stator core and preventing the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking out from a portion in contact with the stator core; another heat medium flow member through which a heat medium can flow, the other heat medium flow member being disposed on the other side of the stator core and preventing the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking out from a portion in contact with the stator core; An electrical energy to mechanical energy converter having:

3. a stator core having a plurality of teeth protruding from a base portion; a plurality of U-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of U-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of U-phase conductive tubes protruding from the stator core; a U-phase wire that is electrically conductive and is connected to one end of one of the plurality of U-phase conductive pipes, the U-phase connector being connected to both one end and the other end of the U-phase conductive pipe; a plurality of V-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of V-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of V-phase conductive tubes protruding from the stator core; a V-phase wire that is electrically conductive and is connected to one end of one of the plurality of V-phase conductive pipes, the V-phase connector being connected to both one end and the other end of the V-phase conductive pipe; a plurality of W-phase conductive pipes that are electrically conductive and allow a heat medium to flow therethrough, that are disposed in a plurality of spaces between the plurality of teeth, and that protrude to both sides of the stator core by a length greater than a thickness of the stator core; a plurality of W-phase connectors that are electrically conductive and are connected to one end or the other end of the plurality of W-phase conductive tubes protruding from the stator core; a W-phase wire that is electrically conductive and is connected to one end of one of the plurality of W-phase conductive pipes, the W-phase wire having the W-phase connector connected to both one end and the other end of the W-phase conductive pipes; a neutral conductor that is conductive and is connected to one end of one of the plurality of U-phase conductive pipes to which the U-phase connector is connected only at the other end thereof, one end of one of the plurality of V-phase conductive pipes to which the V-phase connector is connected only at the other end thereof, and one end of one of the plurality of W-phase conductive pipes to which the W-phase connector is connected only at the other end thereof; one heat medium flow member through which a heat medium can flow, the one heat medium flow member being disposed on one side of the stator core and preventing the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking out from a portion in contact with the stator core; another heat medium flow member through which a heat medium can flow, the other heat medium flow member being disposed on the other side of the stator core and preventing the heat medium flowing through the plurality of U-phase conductive pipes, the plurality of V-phase conductive pipes, and the plurality of W-phase conductive pipes from leaking out from a portion in contact with the stator core; An electrical energy to mechanical energy converter having:

4. 4. The electrical energy-mechanical energy converter according to claim 1, a sealant provided on the inner circumferential side of the stator core to seal spaces between the teeth; Electrical energy to mechanical energy converter.

5. 5. The electrical energy to mechanical energy converter according to claim 4, The sealing material is a coating material applied to the inner peripheral side of the stator core. Electrical energy to mechanical energy converter.

6. 5. The electrical energy to mechanical energy converter according to claim 4, The sealing material is a slot sealing member arranged on the inner circumferential side of the stator core. Electrical energy to mechanical energy converter.

7. 5. The electrical energy to mechanical energy converter according to claim 4, one heat medium flow pipe through which the heat medium flows is connected to the one heat medium flow member; The other heat medium flow member is connected to the other flow pipe through which the heat medium flows. Electrical energy to mechanical energy converter.

8. 4. The electrical energy-mechanical energy converter according to claim 2 or 3, The inside of one of the heat medium flow members is divided into two sections by a pair of partitions, one of the sections is connected to one of the flow pipes through which the heat medium flows, and the other section is connected to the other of the flow pipes through which the heat medium flows, and some of the plurality of conductive pipes are arranged on the side of one section and the rest are arranged on the side of the other section. Electrical energy to mechanical energy converter.

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