JP7218972B1 - Electrical energy mechanical energy converter and electrical energy mechanical energy converter system - Google Patents

Abstract

An electric energy mechanical energy converter having high cooling performance and excellent productivity and a system using the same are provided. A refrigerant inlet pipe (121), a refrigerant outlet pipe (122), a connecting conductor (120) that electrically connects the refrigerant inlet pipe (121) and the refrigerant outlet pipe (122), a stator core (21), and a hollow conductor through which a refrigerant can flow. A U-phase refrigerant inlet coil 231, a U-phase refrigerant outlet coil 234, a hollow conductor, a V-phase refrigerant inlet coil 232, a hollow conductor, a V-phase refrigerant outlet coil 235, a hollow conductor, and a W-phase refrigerant inlet coil, a hollow conductor. 233, a W-phase refrigerant outlet coil 236 with a hollow conductor, a U-phase wire 11U connected between the U-phase refrigerant inlet coil 231 and the U-phase refrigerant outlet coil 234, a V-phase refrigerant inlet coil 232 and a V-phase refrigerant It has a V-phase line 11 V connected between the outlet coil 235 and a W-phase line 11 W connected between the W-phase refrigerant inlet coil 233 and the W-phase refrigerant outlet coil 236 . [Selection drawing] Fig. 2

Description

The present invention relates to a converter for converting electrical energy to mechanical energy or vice versa and a system using the converter.

Examples of converters that convert electrical energy into mechanical energy or mechanical energy into electrical energy include rotary electric machines that function as electric motors or generators, linear motors, and the like. In these converters, it is important to suppress the temperature rise.

Patent Document 1 describes an electric machine in which a single hollow conductive wire is folded halfway to form a double layer and wound around a stator core to form a stator coil, and a coolant is flowed through the hollow conductive wire to suppress temperature rise. disclosed.

JP 2004-135386 A

However, in the above-mentioned conventional electric machine, the stator coil is formed by winding a single hollow conductor that is doubled by folding back halfway around the stator core. was required and productivity was poor. In addition, even when a plurality of hollow conductor wires are wound in a bundle, a pair of hollow conductor wires must be used for winding in order to secure a reciprocating flow path.
Furthermore, when the necessary pressure of the cooling water is obtained using Bernoulli's theorem, when the length and cross-sectional area of the hollow conductor of the coil are constant, in the case of JP 2004-135386, one conductor or one slot (Coil) requires a round-trip passage (two passages) for cooling water, so for hollow conductors with the same length and the same cross-sectional area, each piping inner diameter of the round-trip passage is one-sided compared to a hollow conductor with one passage. Since the cross-sectional area is 1/2 or less, the required pressure of the pump becomes 5 times or more at the same cooling water flow rate. If the cooling water pressure is the same, the cooling water flow rate is about 1/3, and the amount of heat removed from the coil is about 1/3, so the pump power required for cooling is required to be 5 times or more, power loss. It is not preferable from the point of view of Also, when a cooling system with the same pressure and the same upper limit of temperature is used, the output that can be taken out from the rotating electric machine is about 1/2. That is, in order to obtain the same cooling capacity, it is necessary to double the cross-sectional area of the hollow conductor, which increases the volume and weight of the rotating electric machine.

The present invention has been made by paying attention to such conventional problems. An object of the present invention is to provide an electrical energy mechanical energy converter and an electrical energy mechanical energy converter system that have high cooling performance and excellent productivity.

The present invention solves the above problems by means of the following solutions. In order to facilitate understanding, reference numerals corresponding to the embodiments of the present invention are parenthesized, but the present invention is not limited to this. Also, the configurations described with reference numerals may be appropriately replaced or improved.

A first aspect is
A conductive coolant inlet pipe (121) into which coolant flows from the tip side;
a U-phase refrigerant inlet coil (231) formed by winding a hollow conductor connected to the refrigerant inlet pipe (121) and through which refrigerant flows through the refrigerant inlet pipe (121);
a U-phase refrigerant outlet coil (234, 2310) formed by winding a hollow conductor through which the refrigerant flows through the U-phase refrigerant inlet coil (231);
a V-phase refrigerant inlet coil (232) formed by winding a hollow conductor connected to the refrigerant inlet pipe (121) and through which the refrigerant flowing through the refrigerant inlet pipe (121) flows;
a V-phase refrigerant outlet coil (235, 2311) formed by winding a hollow conductor through which the refrigerant flows through the V-phase refrigerant inlet coil (232);
a W-phase refrigerant inlet coil (233) formed by winding a hollow conductor connected to the refrigerant inlet pipe (121) and through which the refrigerant flowing through the refrigerant inlet pipe (121) flows;
a W-phase refrigerant outlet coil (236, 2312) formed by winding a hollow conductor through which the refrigerant flowing through the W-phase refrigerant inlet coil (233) flows;
It is connected to the U-phase refrigerant outlet coil (234, 2310), the V-phase refrigerant outlet coil (235, 2311) and the W-phase refrigerant outlet coil (236, 2312), and the U-phase refrigerant outlet coil (234, 2310) is connected to The refrigerant that has flowed and the refrigerant that has flowed through the V-phase refrigerant outlet coils (235, 2311) and the refrigerant that has flowed through the W-phase refrigerant outlet coils (236, 2312) flow out to the tip side of the conductive refrigerant outlet pipe (122 )and,
a connection conductor (120) that electrically connects the refrigerant inlet pipe (121) and the refrigerant outlet pipe (122);
a U-phase line (11U) connected between the U-phase refrigerant inlet coil (231) and the U-phase refrigerant outlet coil (234, 2310);
a V-phase line (11V) connected between the V-phase refrigerant inlet coil (232) and the V-phase refrigerant outlet coil (235, 2311);
a W-phase line (11W) connected between the W-phase refrigerant inlet coil (233) and the W-phase refrigerant outlet coil (236, 2312);
is an electric energy mechanical energy converter having

A second aspect is the electrical energy mechanical energy converter of the first aspect,
The V-phase refrigerant inlet coil (232) is arranged next to the U-phase refrigerant inlet coil (231),
the W-phase refrigerant inlet coil (233) is positioned next to the V-phase refrigerant inlet coil (232);
The U-phase refrigerant outlet coil (234) is positioned next to the W-phase refrigerant inlet coil (233),
said V-phase refrigerant outlet coil (235) is positioned next to said U-phase refrigerant outlet coil (234);
said W-phase refrigerant outlet coil (236) is positioned next to said V-phase refrigerant outlet coil (235);
Furthermore, the U-phase refrigerant inlet coil (231), the V-phase refrigerant inlet coil (232), the W-phase refrigerant inlet coil (233), the U-phase refrigerant outlet coil (234), the V-phase refrigerant outlet coil (235) ) and the W-phase refrigerant outlet coil (236) are arranged in a circle,
It is an electrical energy mechanical energy converter.

A third aspect is the electrical energy mechanical energy converter of the first aspect,
The U-phase refrigerant outlet coil (234) is positioned next to the U-phase refrigerant inlet coil (231),
said V-phase refrigerant inlet coil (232) is positioned next to said U-phase refrigerant outlet coil (234);
said V-phase refrigerant outlet coil (235) is positioned next to said V-phase refrigerant inlet coil (232);
said W-phase refrigerant inlet coil (233) is positioned next to said V-phase refrigerant outlet coil (235);
said W-phase refrigerant outlet coil (236) is positioned next to said W-phase refrigerant inlet coil (233);
Furthermore, the U-phase refrigerant inlet coil (231), the U-phase refrigerant outlet coil (234), the V-phase refrigerant inlet coil (232), the V-phase refrigerant outlet coil (235), the W-phase refrigerant inlet coil (233) ) and the W-phase refrigerant outlet coil (236) are arranged in a circle,
It is an electrical energy mechanical energy converter.

A fourth aspect is the electrical energy mechanical energy converter of the first aspect,
The V-phase refrigerant inlet coil (232) is arranged next to the U-phase refrigerant inlet coil (231),
the W-phase refrigerant inlet coil (233) is positioned next to the V-phase refrigerant inlet coil (232);
The U-phase refrigerant outlet coil (234) is positioned next to the W-phase refrigerant inlet coil (233),
said V-phase refrigerant outlet coil (235) is positioned next to said U-phase refrigerant outlet coil (234);
said W-phase refrigerant outlet coil (236) is positioned next to said V-phase refrigerant outlet coil (235);
Furthermore, the U-phase refrigerant inlet coil (231), the V-phase refrigerant inlet coil (232), the W-phase refrigerant inlet coil (233), the U-phase refrigerant outlet coil (234), the V-phase refrigerant outlet coil (235) ) and the W-phase refrigerant outlet coil (236) are arranged in a straight line,
It is an electrical energy mechanical energy converter.

A fifth aspect is the electrical energy mechanical energy converter of any one of the first to fourth aspects,
The electrical distance from the U-phase line (11U) to the U-phase refrigerant inlet coil (231) and the electrical distance from the U-phase line (11U) to the U-phase refrigerant outlet coil (234, 2310) are: equal or approximately equal,
The electrical distance from the V-phase line (11V) to the V-phase refrigerant inlet coil (232) and the electrical distance from the V-phase line (11V) to the V-phase refrigerant outlet coil (235, 2311) are equal or approximately equal,
The electrical distance from the W-phase line (11W) to the W-phase refrigerant inlet coil (233) and the electrical distance from the W-phase line (11W) to the W-phase refrigerant outlet coil (236, 2312) are: equal or approximately equal,
It is an electrical energy mechanical energy converter.

A sixth aspect is the electrical energy mechanical energy converter of the first aspect,
a U-phase upstream coil (234) formed by winding a hollow conductor through which the coolant that has flowed through the U-phase coolant inlet coil (231) is wound;
a U-phase downstream coil (2307) formed by winding a hollow conductor through which the coolant that has flowed through the U-phase upstream coil (234) is wound;
a V-phase upstream coil (235) formed by winding a hollow conductor through which the coolant that has flowed through the V-phase coolant inlet coil (232) is wound;
a V-phase downstream coil (2308) formed by winding a hollow conductor through which the coolant that has flowed through the V-phase upstream coil (235) is wound;
a W-phase upstream coil (236) formed by winding a hollow conductor through which the coolant that has flowed through the W-phase coolant inlet coil (233) is wound;
a W-phase downstream coil (2309) formed by winding a hollow conductor through which the coolant that has flowed through the W-phase upstream coil (236) is wound;
has
In the hollow conductor of the U-phase refrigerant outlet coil (2310), refrigerant flows through the U-phase inlet coil (231), the U-phase upstream coil (234), and the U-phase downstream coil (2307). Refrigerant flows through
Through the hollow conductor of the V-phase refrigerant outlet coil (2311), refrigerant flows through the V-phase inlet coil (232), the V-phase upstream coil (235), and the V-phase downstream coil (2308). Refrigerant flows through
In the hollow conductor of the W-phase refrigerant outlet coil (2312), refrigerant flows through the W-phase inlet coil (233), the W-phase upstream coil (236), and the W-phase downstream coil (2309). the refrigerant flowing through the
It is an electrical energy mechanical energy converter.

A seventh aspect is the electrical energy mechanical energy converter of the sixth aspect,
The V-phase refrigerant inlet coil (232) is arranged next to the U-phase refrigerant inlet coil (231),
the W-phase refrigerant inlet coil (233) is positioned next to the V-phase refrigerant inlet coil (232);
The U-phase upstream coil (234) is arranged next to the W-phase refrigerant inlet coil (233),
The V-phase upstream coil (235) is arranged next to the U-phase upstream coil (234),
The W-phase upstream coil (236) is arranged next to the V-phase upstream coil (235),
The U-phase downstream coil (2307) is arranged next to the W-phase upstream coil (236),
The V-phase downstream coil (2308) is arranged next to the U-phase downstream coil (2307),
The W-phase downstream coil (2309) is arranged next to the V-phase downstream coil (2308),
The U-phase refrigerant outlet coil (2310) is arranged next to the W-phase downstream coil (2309),
The V-phase refrigerant outlet coil (2311) is arranged next to the U-phase refrigerant outlet coil (2310),
The W-phase refrigerant outlet coil (2312) is arranged next to the V-phase refrigerant outlet coil (2311),
Furthermore, the U-phase refrigerant inlet coil (231), the V-phase refrigerant inlet coil (232), the W-phase refrigerant inlet coil (233), the U-phase upstream coil (234), the V-phase upstream coil (235) ), the W-phase upstream coil (236), the U-phase downstream coil (2307), the V-phase downstream coil (2308), the W-phase downstream coil (2309), the U-phase refrigerant outlet coil (2310 ), the V-phase refrigerant outlet coil (2311) and the W-phase refrigerant outlet coil (2312) are arranged in a circle,
It is an electrical energy mechanical energy converter.

An eighth aspect is the electrical energy mechanical energy converter of the sixth aspect,
The U-phase upstream coil (234) is arranged next to the U-phase refrigerant inlet coil (231),
The V-phase refrigerant inlet coil (232) is arranged next to the U-phase upstream coil (234),
The V-phase upstream coil (235) is arranged next to the V-phase refrigerant inlet coil (232),
The W-phase refrigerant inlet coil (233) is arranged next to the V-phase upstream coil (235),
The W-phase upstream coil (236) is arranged next to the W-phase refrigerant inlet coil (233),
The U-phase downstream coil (2307) is arranged next to the W-phase upstream coil (236),
The U-phase refrigerant outlet coil (2310) is arranged next to the U-phase downstream coil (2307),
The V-phase downstream coil (2308) is positioned next to the U-phase refrigerant outlet coil (2310),
The V-phase refrigerant outlet coil (2311) is arranged next to the V-phase downstream coil (2308),
The W-phase downstream coil (2309) is arranged next to the V-phase refrigerant outlet coil (2311),
The W-phase refrigerant outlet coil (2312) is arranged next to the W-phase downstream coil (2309),
Furthermore, the U-phase refrigerant inlet coil (231), the U-phase upstream coil (234), the V-phase refrigerant inlet coil (232), the V-phase upstream coil (235), the W-phase refrigerant inlet coil (233) ), the W-phase upstream coil (236), the U-phase downstream coil (2307), the U-phase refrigerant outlet coil (2310), the V-phase downstream coil (2308), the V-phase refrigerant outlet coil (2311 ), the W-phase downstream coil (2309) and the W-phase refrigerant outlet coil (2312) are arranged in a circle,
It is an electrical energy mechanical energy converter.

A ninth aspect is the electrical energy mechanical energy converter of the sixth aspect,
The V-phase refrigerant inlet coil (232) is arranged next to the U-phase refrigerant inlet coil (231),
the W-phase refrigerant inlet coil (233) is positioned next to the V-phase refrigerant inlet coil (232);
The U-phase upstream coil (234) is arranged next to the W-phase refrigerant inlet coil (233),
The V-phase upstream coil (235) is arranged next to the U-phase upstream coil (234),
The W-phase upstream coil (236) is arranged next to the V-phase upstream coil (235),
The U-phase downstream coil (2307) is arranged next to the W-phase upstream coil (236),
The V-phase downstream coil (2308) is arranged next to the U-phase downstream coil (2307),
The W-phase downstream coil (2309) is arranged next to the V-phase downstream coil (2308),
The U-phase refrigerant outlet coil (2310) is arranged next to the W-phase downstream coil (2309),
The V-phase refrigerant outlet coil (2311) is arranged next to the U-phase refrigerant outlet coil (2310),
The W-phase refrigerant outlet coil (2312) is arranged next to the V-phase refrigerant outlet coil (2311),
Furthermore, the U-phase refrigerant inlet coil (231), the V-phase refrigerant inlet coil (232), the W-phase refrigerant inlet coil (233), the U-phase upstream coil (234), the V-phase upstream coil (235) ), the W-phase upstream coil (236), the U-phase downstream coil (2307), the V-phase downstream coil (2308), the W-phase downstream coil (2309), the U-phase refrigerant outlet coil (2310 ), the V-phase refrigerant outlet coil (2311) and the W-phase refrigerant outlet coil (2312) are arranged in a straight line,
It is an electrical energy mechanical energy converter.

A tenth aspect is the electrical energy mechanical energy converter of any one of the sixth to ninth aspects,
The electrical distance from the U-phase line (11U) to the U-phase refrigerant inlet coil (231) and the electrical distance from the U-phase line (11U) to the U-phase refrigerant outlet coil (234, 2310) are: equal or approximately equal,
The electrical distance from the V-phase line (11V) to the V-phase refrigerant inlet coil (232) and the electrical distance from the V-phase line (11V) to the V-phase refrigerant outlet coil (235, 2311) are equal or approximately equal,
The electrical distance from the W-phase line (11W) to the W-phase refrigerant inlet coil (233) and the electrical distance from the W-phase line (11W) to the W-phase refrigerant outlet coil (236, 2312) are: equal or approximately equal,
The electrical distance from the U-phase wire (11U) to the U-phase upstream coil (234) and the electrical distance from the U-phase wire (11U) to the U-phase downstream coil (2307) are equal or approximately equal,
The electrical distance from the V-phase wire (11V) to the V-phase upstream coil (235) and the electrical distance from the V-phase wire (11V) to the V-phase downstream coil (2308) are equal or approximately equal,
The electrical distance from the W-phase line (11W) to the W-phase upstream coil (236) and the electrical distance from the W-phase line (11W) to the W-phase downstream coil (2309) are equal or approximately equal to
It is an electrical energy mechanical energy converter.

The eleventh aspect is
an electrical energy mechanical energy converter of any of the first through fourth and sixth through ninth aspects;
A radiator (61) into which the refrigerant flowing out from the refrigerant outlet pipe (122) flows and a fan (62) that blows air to the radiator (61), and a heat dissipation part (6, 631) that promotes heat dissipation of the refrigerant. )and,
a circulation pump (5) into which the refrigerant flowing out from the radiator (61) flows, discharges the refrigerant, and sends the refrigerant to the refrigerant inlet pipe (121);
a controller (7) for controlling operation of at least one of the fan (62) and the circulation pump (5);
An electrical energy mechanical energy converter system comprising:

A twelfth aspect is the electrical energy mechanical energy converter system of the eleventh aspect,
The controller (7) increases the discharge rate of the circulation pump (5) as the output required for the electrical energy mechanical energy converter increases.
It is an electric energy mechanical energy converter system.

A thirteenth aspect is the electrical energy mechanical energy converter system of the eleventh aspect,
The controller (7) increases the discharge amount of the circulation pump (5) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
It is an electric energy mechanical energy converter system.

A fourteenth aspect is the electrical energy mechanical energy converter system of the eleventh aspect,
The controller (7) increases the discharge amount of the circulation pump (5) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher, and the output required for the electrical energy mechanical energy converter is increased. correcting the discharge amount of the circulation pump (5) based on
It is an electric energy mechanical energy converter system.

A fifteenth aspect is the electrical energy mechanical energy converter system of the eleventh aspect,
The controller (7) increases the blowing volume of the fan (62) as the output required for the electrical energy mechanical energy converter is greater.
It is an electric energy mechanical energy converter system.

A sixteenth aspect is the electrical energy mechanical energy converter system of the eleventh aspect,
The controller (7) increases the blowing volume of the fan (62) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
It is an electric energy mechanical energy converter system.

A seventeenth aspect is
an electrical energy mechanical energy converter of any of the first through fourth and sixth through ninth aspects;
a heat exchanger (631) through which said refrigerant flows and sets another heat exchanger (632);
a radiator (612) into which the refrigerant flowing out from the another heat exchanger (632) flows;
a fan (622) blowing air to the radiator (612);
a circulation pump (5) into which the refrigerant flowing out from the heat exchanger (631) flows, discharges the refrigerant, and sends the refrigerant to the refrigerant inlet pipe (121);
a controller (7) for controlling operation of at least one of the fan (62) and the circulation pump (5);
An electrical energy mechanical energy converter system comprising:

An eighteenth aspect is the electrical energy mechanical energy converter system of the seventeenth aspect,
The controller (7) increases the discharge rate of the circulation pump (5) as the output required for the electrical energy mechanical energy converter increases.
It is an electric energy mechanical energy converter system.

A nineteenth aspect is the electrical energy mechanical energy converter system of the seventeenth aspect,
The controller (7) increases the discharge amount of the circulation pump (5) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
It is an electric energy mechanical energy converter system.

A twentieth aspect is the electrical energy mechanical energy converter system of the seventeenth aspect,
The controller (7) increases the discharge amount of the circulation pump (5) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher, and the output required for the electrical energy mechanical energy converter is increased. correcting the discharge amount of the circulation pump (5) based on
It is an electric energy mechanical energy converter system.

A twenty-first aspect is the electrical energy mechanical energy converter system of the seventeenth aspect,
The controller (7) increases the blowing volume of the fan (62) as the output required for the electrical energy mechanical energy converter is greater.
It is an electric energy mechanical energy converter system.

A twenty-second aspect is the electrical energy mechanical energy converter system of the seventeenth aspect, comprising:
The controller (7) increases the blowing volume of the fan (62) as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
It is an electric energy mechanical energy converter system.

According to this aspect, high cooling performance can be obtained, and productivity is also excellent.

1 shows a stator of an electrical energy mechanical energy converter; FIG. FIG. 2 is a diagram for explaining the outline of wiring of the stator coils of the rotary electric machine 1. As shown in FIG. FIG. 3 is a diagram illustrating a U-phase connection portion. FIG. 4 is a diagram simply showing the configuration of the coil in FIG. FIG. 5 is a diagram showing the configuration diagram of FIG. 4 divided into upper and lower parts of the U-phase, V-phase, and W-phase to facilitate understanding of FIG. FIG. 6 is a diagram for explaining the flow of cooling liquid in FIG. FIG. 7 is a diagram for explaining the flow of cooling liquid in FIG. FIG. 8 is a diagram for explaining the flow of cooling liquid using the developed view shown in FIG. FIG. 9 is a diagram for explaining the current flow in FIG. FIG. 10 is a diagram for explaining how current flows from the U-phase line 11U to the V-phase line 11V in FIG. FIG. 11 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. FIG. 12 is a diagram illustrating an electrical energy mechanical energy converter system. FIG. 13 is a diagram showing a second embodiment of the rotating electric machine. FIG. 14 is a diagram simply showing the configuration of the coils of the rotating electric machine of the third embodiment. FIG. 15 is a diagram showing the configuration diagram of FIG. 14 divided into upper and lower parts of the U-phase, V-phase, and W-phase to facilitate understanding of FIG. FIG. 16 is a diagram illustrating a U-phase connection portion. FIG. 17 is a diagram showing an example of how the coils are arranged. FIG. 18 is a diagram showing another example of how the coils are arranged. FIG. 19 is a diagram showing still another example of how the coils are arranged. FIG. 20 is a diagram for explaining the flow of cooling liquid in FIG. FIG. 21 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. FIG. 22 is a diagram illustrating a U-phase connection portion. FIG. 23 is a diagram simply showing the configuration of the coils of the rotating electric machine of the fourth embodiment. FIG. 24 is a diagram showing the configuration diagram of FIG. 23 divided into upper and lower parts for the U-phase, V-phase, and W-phase to facilitate understanding of FIG. FIG. 25 is a diagram illustrating a U-phase connection portion. FIG. 26 is a diagram showing an example of how coils are arranged. FIG. 27 is a diagram for explaining the flow of coolant in FIG. 23. FIG. FIG. 28 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. FIG. 29 is a diagram illustrating a U-phase connecting portion in the case of 24 coils. FIG. 30 is a diagram illustrating a U-phase connecting portion in the case of 36 coils. FIG. 31 is a diagram for explaining the U-phase connection in the case of 48 coils. FIG. 32 is a diagram for explaining the U-phase connection portion of the fifth embodiment. FIG. 33 is a diagram simply showing the configuration of the coils of the electrical energy mechanical energy converter system of the sixth embodiment. FIG. 34 is a diagram showing the configuration diagram of FIG. 33 divided into upper and lower parts of the U-phase, V-phase, and W-phase to facilitate understanding of FIG. FIG. 35 is a diagram for explaining the flow of coolant in FIG. 33. FIG. FIG. 36 is a diagram for explaining how current flows from the U-phase line 11U to the V-phase line 11V in FIG. FIG. 37 is a diagram showing a seventh embodiment of a rotating electric machine, and is a diagram for explaining a U-phase connection portion. FIG. 38 is a diagram showing an eighth embodiment of a rotating electric machine, and is a diagram for explaining a U-phase connection portion. FIG. 39 is a diagram illustrating another example of an electrical energy mechanical energy converter system.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
1 shows a stator of an electrical energy mechanical energy converter; FIG.
In the following description, unless otherwise specified, a rotating electric machine functioning as an electric motor or a generator will be described as the electric energy mechanical energy converter.

As disclosed in Japanese Unexamined Patent Application Publication No. 2002-101591, a slotless type rotary electric machine (electrical energy mechanical energy converter) is known in which an air-core coil is arranged on the inner peripheral surface of a stator core having no slots. It is

FIG. 1 shows an example of a stator for such a rotating electric machine.
FIG. 1 is a perspective view of a stator of a slotless type rotary electric machine showing an embodiment of the present invention, showing a part of the stator core cut away.

A stator 2 of a slotless type rotary electric machine is an example of a configuration in which a coil 23 arranged inside a stator core 21 via an insulating sheet 201 is further held and fixed by an inner protective layer 202 . . In FIG. 1, the coil 23 is wound only once in order to avoid complication of the drawing, but in reality it is wound a plurality of times as necessary. Also, the insulating sheet and the protective layer may be replaced by another means, or a structure in which they are not used is possible.
A slotless type rotary electric machine can reduce cogging torque, magnet loss, iron loss, drift loss, and the like.

In this embodiment, hollow conductors are used as the conductors forming the coil 23 . Each coil is roughly divided into a U-phase coil that forms a U-phase, a V-phase coil that forms a V-phase, and a W-phase coil that forms a W-phase. Although not shown, a U-phase wire is connected to the hollow conductor that forms the U-phase coil. A V-phase wire is connected to the hollow conductor that forms the V-phase coil. A W-phase wire is connected to the hollow conductor that forms the W-phase coil.

FIG. 2 is a diagram for explaining the outline of wiring of the stator coils of the rotary electric machine 1. As shown in FIG.

A rotating electric machine 1 shown in FIG. 2 is an example of the present invention, and has a stator 2 with six coils arranged on the outer circumference side and a rotor 3 with four permanent magnets 31 arranged on the inner circumference side. It is an inner rotor type rotary electric machine with 6 coils and 4 poles (6N4P).

Six coils are arranged on the inner peripheral surface of the stator core 21 of the stator 2 . Specifically, the stator core 21 is provided with a first coil 231, a second coil 232, a third coil 233, a fourth coil 234, a fifth coil 235, and a sixth coil 236. there is Next to the first coil 231 is the second coil 232 . Next to the second coil 232 is the third coil 233 . Next to the third coil 233 is the fourth coil 234 . Next to the fourth coil 234 is the fifth coil 235 . Next to the fifth coil 235 is the sixth coil 236 . Next to the sixth coil 236 is the first coil 231 .

The first coil 231 is formed by winding the first hollow conductor 221 . The size of the first hollow conducting wire 221 is, for example, about 0.5 to 12 mm in outer diameter and 0.3 mm or more in inner diameter, so that the cooling liquid can flow. However, since the size and shape of the hollow conductor depend on the specifications of the rotating electrical machine, the optimal size may be selected according to the specifications of the rotating electrical machine, and the cross-sectional shape of the hollow conductor is not limited to circular. The same applies to the following hollow conductors. Moreover, as an insulating material for hollow conductors, for example, an insulating varnish can be used. However, the cost can be kept low without the need for high-grade varnish. Also, a shrinkable tube may be used as the insulating material. An insulating material using an ultra-thin type shrinkable tube may be used, and the number of conductors is shrunk in a grouped state. Alternatively, a thin insulating tape made of polyester or the like may be wound around the conductor. When hollow conductors are used, since the inside of the conductor is directly cooled, there is no need to consider the inhibition of heat dissipation on the surface of the conductor due to the insulating coating, so it is possible to increase the voltage by increasing the thickness of the insulating coating. is also easy.

Also, the first coil 231 is provided with a temperature sensor 241 that detects the coil temperature. One end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 . Coolant inlet tube 121 is electrically conductive and conducts electricity. The coolant inlet pipe 121 is branched into three paths on the downstream side in the coolant flow direction, and one end (coolant inlet) of the first hollow conducting wire 221 is connected to one of them. The other end (coolant outlet) of the first hollow conducting wire 221 is connected to the U-phase connection portion 110U as described later.

The second coil 232 is formed by winding the second hollow conductor 222 . The second hollow conducting wire 222 is similar to the first hollow conducting wire 221 and has a hollow shape through which the coolant can flow. The second coil 232 is provided with a temperature sensor 242 that detects the coil temperature. One end (coolant inlet) of the second hollow conductor 222 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the second hollow conductor 222 is connected to the V-phase connection portion 110V as described later.

The third coil 233 is formed by winding the third hollow conductor 223 . The third hollow conducting wire 223 is similar to the first hollow conducting wire 221 and has a hollow shape through which cooling liquid can flow. The third coil 233 is provided with a temperature sensor 243 that detects the coil temperature. One end (coolant inlet) of the third hollow conductor 223 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the third hollow conducting wire 223 is connected to the W-phase connecting portion 110W as described later.

The fourth coil 234 is formed by winding the fourth hollow conductor 224 . The fourth hollow conducting wire 224 is similar to the first hollow conducting wire 221 and has a hollow shape through which cooling liquid can flow. The fourth coil 234 is provided with a temperature sensor 244 that detects the coil temperature. One end (coolant inlet) of the fourth hollow conducting wire 224 continues to the U-phase connection portion 110U as described later. The other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122 . Coolant outlet tube 122 is electrically conductive and conducts electricity. The coolant outlet pipe 122 is branched into three paths on the upstream side in the coolant flow direction, and the other end (coolant outlet) of the fourth hollow conducting wire 224 is connected to one of them.

The fifth coil 235 is formed by winding the fifth hollow conductor 225 . The fifth hollow conducting wire 225 is similar to the first hollow conducting wire 221 and has a hollow shape through which cooling liquid can flow. The fifth coil 235 is provided with a temperature sensor 245 that detects the coil temperature. One end (coolant inlet) of the fifth hollow conductor 225 is connected to the V-phase connection portion 110V as described later. The other end (coolant outlet) of the fifth hollow conductor 225 is connected to the coolant outlet pipe 122 .

The sixth coil 236 is formed by winding the sixth hollow conductor 226 . The sixth hollow conducting wire 226 is similar to the first hollow conducting wire 221 and has a hollow shape through which cooling liquid can flow. The sixth coil 236 is provided with a temperature sensor 246 that detects the coil temperature. One end (coolant inlet) of the sixth hollow conductor 226 is connected to the W-phase connection portion 110W as described later. The other end (coolant outlet) of the sixth hollow conductor 226 is connected to the coolant outlet pipe 122 .

As described above, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are hollow and allow the cooling liquid to flow therethrough. The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected via a solid lead wire 120 .

FIG. 3 is a diagram illustrating a U-phase connection portion. Note that FIG. 3A is a plan cross-sectional view of the U-phase connection portion 110U, and FIG. 3B is a simplified illustration of the vicinity of the U-phase connection portion.

As described above, the other end (coolant outlet) of first hollow conductor 221 of first coil 231 is connected to U-phase connection portion 110U. One end (coolant inlet) of the fourth hollow conductor 224 of the fourth coil 234 is also connected to the U-phase connection portion 110U. The U-phase connection portion 110U has a tubular shape, and has a liquid-tight structure in which the coolant that has flowed through the first hollow conductor 221 flows to the fourth hollow conductor 224 without leaking. A U-phase line 11U is connected to the U-phase connection portion 110U. The electrical distance from U-phase connection portion 110U to first coil 231 and the electrical distance from U-phase connection portion 110U to fourth coil 234 are equal or substantially equal. Note that the electrical distance is the distance of the path through which electricity flows.

Further, as described above, one end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121, and the other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122. Connected. The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected via a solid lead wire 120 .

Although FIG. 3 illustrates the U-phase connection portion, the V-phase connection portion 110V and the W-phase connection portion 110W have the same configuration, so the description thereof is omitted.

FIG. 4 is a diagram simply showing the configuration of the coil in FIG.
In FIG. 4, U-phase connection portion 110U, V-phase connection portion 110V, and W-phase connection portion 110W are omitted in order to avoid complication of the drawing.

Also, FIG. 5 is a diagram showing the configuration diagram of FIG. 4 divided into upper and lower parts for the U phase, V phase, and W phase to facilitate understanding of FIG.

One end (coolant inlet) of the first hollow conductor 221 of the first coil 231 is connected to the coolant inlet pipe 121, and the other end (coolant outlet) is connected to one end of the fourth hollow conductor 224 of the fourth coil 234 ( coolant inlet). The other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122 . A U-phase wire 11U is connected to the first hollow conductor 221 and the fourth hollow conductor 224 .

One end (coolant inlet) of the second hollow conductor 222 of the second coil 232 is connected to the coolant inlet pipe 121, and the other end (coolant outlet) is connected to one end of the fifth hollow conductor 225 of the fifth coil 235 ( coolant inlet). The other end (coolant outlet) of the fifth hollow conductor 225 is connected to the coolant outlet pipe 122 . A V-phase wire 11V is connected to the second hollow conductor 222 and the fifth hollow conductor 225 .

One end (coolant inlet) of the third hollow conductor 223 of the third coil 233 is continuous with the coolant inlet pipe 121, and the other end (coolant outlet) is connected to one end of the sixth hollow conductor 226 of the sixth coil 236 ( coolant inlet). The other end (coolant outlet) of the sixth hollow conductor 226 is connected to the coolant outlet pipe 122 . A W-phase wire 11W is connected to the third hollow conductor 223 and the sixth hollow conductor 226 .

The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected via a solid lead wire 120 . This conducting wire 120 becomes the neutral point.

Next, the flow of cooling liquid will be described.
FIG. 6 is a diagram for explaining the flow of cooling liquid in FIG. The arrow indicates the flow direction of the cooling liquid.
As indicated by the arrow, the coolant that has flowed through the coolant inlet pipe 121 flows through the first hollow conductor 221 of the first coil 231, passes through the U-phase connection portion 110U, and reaches the fourth hollow conductor of the fourth coil 234. 224 to coolant outlet tube 122 .

FIG. 7 is a diagram for explaining the flow of cooling liquid in FIG. The arrow indicates the flow direction of the cooling liquid.

The cooling liquid that has flowed through the cooling liquid inlet pipe 121 is divided into three flows.

The first flow flows through the first hollow conductor 221 of the first coil 231, passes through the U-phase connection portion 110U, passes through the fourth hollow conductor 224 of the fourth coil 234, and flows to the coolant outlet pipe 122.

The second flow flows through the second hollow conductor 222 of the second coil 232, passes through the V-phase connection portion 110V, and flows through the fifth hollow conductor 225 of the fifth coil 235 to the coolant outlet pipe 122.

The third flow flows through the third hollow conductor 223 of the third coil 233, passes through the W-phase connection portion 110W, passes through the sixth hollow conductor 226 of the sixth coil 236, and flows to the coolant outlet pipe 122.

The flow of the cooling liquid is explained below using a developed view.
FIG. 8 is a diagram for explaining the flow of cooling liquid using the developed view shown in FIG. The arrow indicates the flow direction of the cooling liquid.

The cooling liquid that has flowed through the cooling liquid inlet pipe 121 is divided into three flows.
The first flow flows through the first hollow conductor 221 of the first coil 231 and through the fourth hollow conductor 224 of the fourth coil 234 to the coolant outlet pipe 122 .

The second flow flows through the second hollow conductor 222 of the second coil 232 and through the fifth hollow conductor 225 of the fifth coil 235 to the coolant outlet tube 122 .

A third flow flows through the third hollow conductor 223 of the third coil 233 and through the sixth hollow conductor 226 of the sixth coil 236 to the coolant outlet pipe 122 .

Next, the flow of current will be described.
FIG. 9 is a diagram for explaining the current flow in FIG. The arrow indicates the direction of current flow.

The current flowing through the U-phase line 11U flows through the first hollow conducting wire 221 and reaches the coolant inlet pipe 121 as one flow. Another current flowing through the U-phase line 11 U flows through the fourth hollow conductor 224 and reaches the coolant inlet pipe 121 . The current flow after reaching the coolant inlet tube 121 will be described later.

FIG. 10 is a diagram for explaining how current flows from the U-phase line 11U to the V-phase line 11V in FIG. The arrow indicates the direction of current flow.

The current input from the U-phase line 11U flows through the first hollow conductor 221 as one flow, passes through the coolant inlet pipe 121, flows through the second hollow conductor 222, and reaches the V-phase line 11V. Another current input from the U-phase line 11U flows through the fourth hollow conductor 224, passes through the coolant outlet pipe 122, flows through the fifth hollow conductor 225, and reaches the V-phase line 11V.

The flow of this current will be described below with reference to a developed view.
FIG. 11 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. The arrow indicates the direction of current flow.

The current input from the U-phase line 11U flows through the first hollow conductor 221 as one flow, passes through the coolant inlet pipe 121, flows through the second hollow conductor 222, and reaches the V-phase line 11V. Another current input from the U-phase line 11U flows through the fourth hollow conductor 224, passes through the coolant outlet pipe 122, flows through the fifth hollow conductor 225, and reaches the V-phase line 11V.

The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by a solid conducting wire 120, and this conducting wire 120 serves as a neutral point. The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 have the same potential and no potential difference, so no current flows through the conducting wire 120 .

In addition, since the electrical distance from the U-phase connection portion 110U to the first coil 231 and the electrical distance from the U-phase connection portion 110U to the fourth coil 234 are equal or substantially equal, Basically, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 have the same potential and no potential difference. However, if the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 were not electrically connected without the conducting wire 120, if some kind of abnormality such as disconnection of the first coil 231 or the fourth coil 234 occurred, A large potential difference is generated between the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122, which may cause a short circuit. On the other hand, in this embodiment, since the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by the lead wire 120, such a situation can be avoided.

Each coil is formed by winding a hollow conductive wire. A coolant (refrigerant) flows through the hollow conductor. As will be described later, the cooling liquid (refrigerant) coming out of the rotating electrical machine is cooled by a radiator and sent to the rotating electrical machine again. With such a configuration, the cooling performance of the rotating electric machine is excellent. Therefore, the magnets used in the rotor 3 do not need to have high heat resistance specifications, so that the cost required for the magnets can be kept low, and resource saving can also be achieved. In addition, since magnets with high magnetic force but low heat resistance can be used, it is possible to further reduce the size and weight of the rotary electric machine.

(First Embodiment of Electrical Energy Mechanical Energy Converter System)
FIG. 12 is a diagram illustrating an electrical energy mechanical energy converter system.
In the following description, unless otherwise specified, a rotating electric machine functioning as an electric motor or a generator will be described as the electric energy mechanical energy converter. Therefore, the electrical energy-mechanical energy converter system is also appropriately referred to as a rotating electric machine system.

Next, a specific system using the rotating electric machine (electric energy mechanical energy converter) described above will be described.

A rotary electric machine system (electrical energy to mechanical energy converter system) S includes an electric energy to mechanical energy converter (rotary electric machine) 1 , a circulation pump 5 , a heat exchange section 6 , and a controller 7 .

A U-phase line 11U, a V-phase line 11V, a W-phase line 11W, a cooling liquid inlet pipe 121, a cooling liquid outlet pipe 122, and the like are led out from the rotary electric machine 1 . A current sensor 111U is provided on the U-phase line 11U. A current sensor 111W is provided on the W-phase line 11W. The coolant inlet pipe 121 and the coolant outlet pipe 122 are connected to the coolant circulation path 50 . Signals from the current sensors 111U and 111W are sent to the controller 7 and used to control the circulation pump 5 and the cooling fan 62 . Temperature sensors 241 to 246 are attached to each coil of the stator of the rotary electric machine 1 to detect the temperature of the coil. Signals from temperature sensors 241 - 246 are sent to controller 7 and used to control warning light 81 . A temperature sensor is not essential for each coil, but is desirable.

The circulation pump 5 sends coolant (refrigerant) to the rotary electric machine 1 . The circulation pump 5 is provided in the coolant circulation path 50 . More specifically, the circulation pump 5 is provided upstream of the rotating electric machine 1 in the coolant flow direction of the coolant circulation path 50 .

As the circulation pump 5, for example, a diaphragm pump can be used. A diaphragm pump is a medium-pressure pump that pumps a liquid by changing the volume by piston movement of a diaphragm made of a rubber plate. The discharge pressure is about 0.1-1 MPa.

A plunger pump may also be used as the circulation pump 5 . A plunger pump is a high-pressure pump in which a metal or ceramic piston changes its volume by piston movement to pump liquid. The discharge pressure can be 0.1-20 MPa or higher.

Furthermore, a vane pump may be used as the circulation pump 5 . A vane pump is a medium-pressure pump in which self-lubricating vanes rotate to change their volume to pump liquid. The discharge pressure is about 0.1-1.8 MPa.

Furthermore, a gear pump may be used as the circulation pump 5 . A gear pump is a high-pressure pump that pumps liquid by changing its volume by rotating the meshing gears. The discharge pressure can be 0.1-30 MPa or higher. In addition, in the case of a gear pump, it is limited to a lubricating liquid.

Alternatively, a centrifugal pump may be used as the circulation pump 5 . Centrifugal pumps, which are widely used in general automobiles, are turbine-rotating, non-volume-changing, centrifugally pumped liquid pumps. For low pressure and high flow rate, no pressure is applied. The discharge pressure is about 0.1-0.4 MPa.

As explained above, various pumps can be used as the circulation pump 5 .

The heat exchange section 6 includes a radiator 61 and a cooling fan 62 in the system shown in FIG. A radiator 61 is provided in the coolant circulation path 50 . More specifically, the radiator 61 is provided downstream of the rotating electric machine 1 in the coolant flow direction of the coolant circulation path 50 and upstream of the circulation pump 5 in the coolant flow direction of the coolant circulation path 50 . The cooling fan 62 blows air to the radiator 61 to help reduce the temperature of the coolant flowing through the radiator 61 .

With the configuration as described above, the cooling liquid discharged by the circulation pump 5 enters from the cooling liquid inlet pipe 121, flows inside the rotary electric machine 1, exits from the cooling liquid outlet pipe 122, and is cooled by the radiator 61. After that, it returns to the circulation pump 5 and is sent to the rotary electric machine 1 again.

The specifications of the coolant are as follows.

It is preferable that the viscosity of the cooling liquid is low. The stator of the electrical energy mechanical energy converter is equipped with a coil formed by winding a hollow conductor. Since the coolant (refrigerant) flows through this hollow conductor, the lower the viscosity, the easier the flow, which is preferable.

The specific heat of the coolant is preferably high. Since the cooling liquid flows through the hollow conductor to cool the electric energy mechanical energy converter, the higher the specific heat of the cooling liquid, the better. Moreover, the one where thermal conductivity is also high is preferable.

It is preferred that the coolant is corrosive but less aggressive to metals. Since the coolant flows inside the metal hollow conductors, it is desirable that the coolant has low aggression to the metal.

Furthermore, if the cooling liquid is insulating, it is preferable because the safety is further improved.

Next, a more detailed configuration of the coolant circulation path 50 will be described.

A filter 511 is provided in the coolant circulation path 50 between the circulation pump 5 and the rotary electric machine 1 . For the filter 511, the mesh size and the like are appropriately selected in consideration of the inner diameter size of the hollow conducting wire to be used and the flow rate. A 200-mesh line filter was used for the rotary electric machine that was prototyped this time. The filter 511 filters the coolant entering the rotary electric machine 1 .

A coolant circulation path 50 between the radiator 61 and the circulation pump 5 is provided with a buffer tank 52 and a filter 512 . More specifically, the filter 512 is provided in the coolant circulation path 50 between the buffer tank 52 and the circulation pump 5 . The buffer tank 52 is a tank that temporarily stores the coolant. Filter 512 is, for example, a line filter of about 200 mesh. Filter 512 filters the coolant entering circulation pump 5 .

A pressure sensor 531 is provided in the coolant circulation path 50 between the filter 511 and the rotary electric machine 1 . This pressure sensor 531 detects the pressure of the coolant entering the coolant inlet pipe 121 . A signal from the pressure sensor 531 is sent to the controller 7 and used to control the circulation pump 5 and the cooling fan 62 .

A pressure sensor 532 is provided in the coolant circulation path 50 between the rotating electric machine 1 and the radiator 61 . This pressure sensor 532 detects the pressure of the coolant exiting the coolant outlet pipe 122 and entering the radiator 61 . A signal from the pressure sensor 532 is sent to the controller 7 and used to control the circulation pump 5 and the cooling fan 62 .

A liquid temperature sensor 533 is provided in the coolant circulation path 50 between the rotating electric machine 1 and the pressure sensor 532 . This liquid temperature sensor 533 detects the temperature of the coolant coming out of the coolant outlet pipe 122 . A signal from the liquid temperature sensor 533 is sent to the controller 7 and used to control the circulation pump 5 and the cooling fan 62 .

The controller 7 receives an operation amount signal from the accelerator operation amount sensor 82, a temperature signal from the fluid temperature sensor 533, a current signal from the current sensor 111U, a current signal from the current sensor 111W, a pressure signal from the pressure sensor 531, and a pressure signal from the pressure sensor 532. The operation of the circulation pump 5 and the cooling fan 62 is controlled based on these signals.

The controller 7 also receives signals from the temperature sensors 241 to 246 and controls display of the warning light 81 based on these signals.

Next, specific control contents of the controller 7 will be described.
Here, the electrical energy to mechanical energy converter system is described as being installed in a machine whose output is regulated. A machine whose output is adjusted is, for example, a vehicle whose speed is controlled by adjusting its output. vehicles, special vehicles, etc.), ATVs (All Terrain Vehicles: four-wheeled buggies), trikes, motorcycles, snowmobiles, snowmobiles, and the like. In addition, ships, jet skis, planes, trains, trucks, etc. are also included. As for drones and helicopters, there are large types that can carry people, and small types that cannot carry people.

(First control method)
The controller 7 inputs an output request signal. The output request signal is, for example, an accelerator pedal depression amount signal in the case of an automobile. Alternatively, it may be a signal of a measured value obtained by measuring a current value to be supplied to the rotary electric machine by a CT sensor (Current Transformer Sensor) or the like, which is determined based on the accelerator pedal depression amount signal. Further, in the case of a crane or the like, it is a lever signal for operating the output of a hoisting device, a signal of a current value to be supplied to a rotating electrical machine determined based on the lever signal, and the like.

The controller 7 adjusts the discharge amount of the circulation pump 5 based on the input output request signal. Specifically, the discharge amount of the circulation pump 5 is increased as the required output is greater.

It is expected that the higher the output required for the rotating electrical machine, the larger the current value flowing through the rotating electrical machine, and the higher the temperature of the rotating electrical machine. Therefore, by performing control according to the first control method, the cooling performance can be improved by increasing the discharge amount of the circulation pump 5 when the temperature rise is assumed, and the temperature rise of the rotating electric machine can be suppressed. can be suppressed. On the other hand, when the temperature rise is not expected, unnecessary energy consumption can be avoided by reducing the discharge amount of the circulation pump 5 .

The controller 7 also receives signals from the temperature sensors 241 to 246, and displays a warning light 81 if any one of them exceeds the allowable temperature. By doing so, an abnormality in the system can be detected early.

(Second control method)
The controller 7 adjusts the discharge amount of the circulation pump 5 based on the signal from the liquid temperature sensor 533 . Specifically, the higher the temperature detected by the liquid temperature sensor 533 is, the more the discharge amount of the circulation pump 5 is increased.

In this way, the higher the temperature of the cooling liquid discharged from the rotating electric machine 1, the more the cooling performance can be improved by increasing the discharge amount of the circulation pump 5, and the temperature rise of the rotating electric machine 1 can be suppressed. can be done. On the other hand, if the coolant temperature is not high, unnecessary energy consumption can be avoided by reducing the discharge amount of the circulation pump 5 .

(Third control method)
The controller 7 adjusts the discharge amount of the circulation pump 5 based on the signal from the liquid temperature sensor 533 and the output request signal. Specifically, as the temperature detected by the liquid temperature sensor 533 increases, the discharge amount of the circulation pump 5 is increased, and the discharge amount of the circulation pump 5 is corrected based on the output request signal.

In this way, the higher the temperature of the cooling liquid discharged from the rotating electric machine 1, the more the cooling performance can be improved by increasing the discharge amount of the circulation pump 5, and the temperature rise of the rotating electric machine 1 can be suppressed. can be done. In addition, it is expected that the larger the required output, the larger the current flowing through the rotating electric machine, and the higher the temperature of the rotating electric machine. Therefore, by increasing the discharge amount of the circulation pump 5 in advance before the liquid temperature actually rises, the temperature rise of the rotary electric machine can be suppressed. On the other hand, if the coolant temperature is not high, unnecessary energy consumption can be avoided by reducing the discharge amount of the circulation pump 5 .

(Fourth control method)
The controller 7 adjusts the amount of air blown by the cooling fan 62 based on the input output request signal. Specifically, the greater the output required, the more the cooling fan 62 blows air.

It is expected that the higher the output required for the rotating electrical machine, the larger the current value flowing through the rotating electrical machine, and the higher the temperature of the rotating electrical machine. Therefore, by performing control according to the fourth control method, the cooling performance can be improved by increasing the amount of air blown by the cooling fan 62 when the temperature is expected to rise, and the temperature rise of the rotating electric machine can be prevented. can be suppressed. On the other hand, when the temperature rise is not expected, unnecessary energy consumption can be avoided by reducing the amount of air blown by the cooling fan 62 .

(Fifth control method)
The controller 7 adjusts the amount of air blown by the cooling fan 62 based on the signal from the liquid temperature sensor 533 . Specifically, the higher the temperature detected by the liquid temperature sensor 533 is, the more air is blown by the cooling fan 62 .

In this way, the higher the temperature of the cooling liquid coming out of the rotating electrical machine 1 is, the more the cooling performance can be improved by increasing the blowing amount of the cooling fan 62, and the temperature rise of the rotating electrical machine 1 can be suppressed. can be done. On the other hand, if the temperature of the coolant is not high, unnecessary energy consumption can be avoided by reducing the amount of air blown by the cooling fan 62 .

(Second embodiment)
FIG. 13 is a diagram showing a second embodiment of the rotating electric machine.
In the following description, portions that perform the same functions as those described above are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate.

The rotary electric machine of the first embodiment is a 6-coil, 4-pole (6N4P) arrangement in which a stator 2 having six coils is arranged on the outer peripheral side, and a rotor 3 having four permanent magnets 31 is arranged on the inner peripheral side. It was an inner rotor type.

In the rotating electrical machine of the second embodiment shown in FIG. 13, a rotor 3 having eight permanent magnets 31 is arranged on the outer peripheral side, and a stator 2 having six coils is arranged on the inner peripheral side. It is an outer rotor type with 6 coils and 8 poles (6N8P).

Six coils are arranged on the inner peripheral surface of the stator core 21 of the stator 2 . Specifically, the stator core 21 is provided with a first coil 231, a second coil 232, a third coil 233, a fourth coil 234, a fifth coil 235, and a sixth coil 236. there is Next to the first coil 231 is the second coil 232 . Next to the second coil 232 is the third coil 233 . Next to the third coil 233 is the fourth coil 234 . Next to the fourth coil 234 is the fifth coil 235 . Next to the fifth coil 235 is the sixth coil 236 . Next to the sixth coil 236 is the first coil 231 .

The configuration of each coil is basically the same as that of the first embodiment. Therefore, here, the first coil 231 and the fourth coil 234 will be particularly described.

The first coil 231 is formed by winding the first hollow conductor 221 . The first hollow conducting wire 221 has a hollow shape through which cooling liquid can flow. One end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the first hollow conductor 221 is connected to the U-phase connection portion 110U.

The fourth coil 234 is formed by winding the fourth hollow conductor 224 . The fourth hollow conducting wire 224 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fourth hollow conductor 224 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122 .

Thus, the configurations of the first coil 231 and the fourth coil 234 are the same as in the first embodiment. Other coils are the same as those in the first embodiment, so detailed description thereof is omitted.

A hollow cooling liquid inlet pipe 121 and a cooling liquid outlet pipe 122 through which the cooling liquid can flow are electrically connected by a solid conducting wire 120 .

Even with such an outer rotor type, it is possible to obtain the same effects as in the first embodiment. That is, the coolant (refrigerant) flows through the hollow conductor, and the coolant (refrigerant) is cooled by the radiator 61, so that the electric energy mechanical energy converter has excellent cooling performance.

Further, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by a solid conducting wire 120, so that the conducting wire 120 becomes a neutral point, and high safety performance can be obtained.

(Third Embodiment)
FIG. 14 is a diagram simply showing the configuration of the coils of the rotating electric machine of the third embodiment. FIG. 15 is a diagram showing the configuration diagram of FIG. 14 divided into upper and lower parts of the U-phase, V-phase, and W-phase to facilitate understanding of FIG.

In the first embodiment, the stator 2 is arranged with six coils, but the number of coils may be larger. For example, it may be of the type with 12 coils, as shown in FIG. In this case, the coils are a first coil 231, a second coil 232, a third coil 233, a fourth coil 234, a fifth coil 235, a sixth coil 236, a seventh coil 2307, an eighth coil 2308, and a ninth coil 2309. , a tenth coil 2310 , an eleventh coil 2311 and a twelfth coil 2312 .

The configurations of the first coil 231, the second coil 232, the third coil 233, the fourth coil 234, the fifth coil 235, and the sixth coil 236 are basically the same as in the first embodiment. Therefore, here, the first coil 231 and the fourth coil 234 will be particularly described.

The first coil 231 is formed by winding the first hollow conductor 221 . The first hollow conducting wire 221 has a hollow shape through which cooling liquid can flow. One end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the first hollow conductor 221 is connected to the U-phase connection portion 110U.

The fourth coil 234 is formed by winding the fourth hollow conductor 224 . The fourth hollow conducting wire 224 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fourth hollow conductor 224 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122 .

Thus, the configurations of the first coil 231 and the fourth coil 234 are the same as in the first embodiment. The other second coil 232, third coil 233, fifth coil 235, and sixth coil 236 are also the same as in the first embodiment, so detailed description thereof will be omitted.

Also, the seventh coil 2307 is the same as the first coil 231 . That is, the seventh coil 2307 is formed by winding the seventh hollow conductor 2207 . The seventh hollow conducting wire 2207 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the seventh hollow conductor 2207 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the seventh hollow conductor 2207 is connected to the U-phase connection portion 110U.

Eighth coil 2308 is similar to second coil 232 . That is, the eighth coil 2308 is formed by winding the eighth hollow conductor 2208 . The eighth hollow conductor 2208 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the eighth hollow conductor 2208 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the eighth hollow conducting wire 2208 is connected to the V-phase connection portion 110V.

The ninth coil 2309 is similar to the third coil 233 . That is, the ninth coil 2309 is formed by winding the ninth hollow conductor 2209 . The ninth hollow conducting wire 2209 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the ninth hollow conductor 2209 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the ninth hollow conducting wire 2209 is connected to the W-phase connecting portion 110W.

The tenth coil 2310 is similar to the fourth coil 234 . That is, tenth coil 2310 is formed by winding tenth hollow conductor 2210 . The tenth hollow conducting wire 2210 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the tenth hollow conductor 2210 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the tenth hollow conductor 2210 is connected to the coolant outlet pipe 122 .

The eleventh coil 2311 is similar to the fifth coil 235 . That is, the eleventh coil 2311 is formed by winding the eleventh hollow conductor 2211 . The eleventh hollow conducting wire 2211 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the eleventh hollow conductor 2211 is connected to the V-phase connection portion 110V. The other end (coolant outlet) of the eleventh hollow conductor 2211 is connected to the coolant outlet pipe 122 .

The twelfth coil 2312 is similar to the sixth coil 236 . That is, the twelfth coil 2312 is formed by winding the twelfth hollow conductor 2212 . The twelfth hollow conducting wire 2212 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the twelfth hollow conductor 2212 is connected to the W-phase connection portion 110W. The other end (coolant outlet) of the twelfth hollow conductor 2212 is connected to the coolant outlet pipe 122 .

As is clear from comparing FIG. 15 with FIG. 5, the configuration of FIG. 15 is basically obtained by preparing two sets of the configuration of FIG. 5 and connecting them in parallel.

FIG. 16 is a diagram illustrating a U-phase connection portion. Note that FIG. 16A is a plan cross-sectional view of the U-phase connection portion 110U, and FIG. 16B is a simplified illustration of the vicinity of the U-phase connection portion.

As described above, the other end (coolant outlet) of first hollow conductor 221 of first coil 231 is connected to U-phase connection portion 110U. One end (coolant inlet) of the fourth hollow conductor 224 of the fourth coil 234 is also connected to the U-phase connection portion 110U. Further, the other end (coolant outlet) of seventh hollow conductor 2207 of seventh coil 2307 is also connected to U-phase connection portion 110U. Furthermore, one end (coolant inlet) of tenth hollow conductor 2210 of tenth coil 2310 is also connected to U-phase connection portion 110U.

In FIG. 16, two cooling liquid inlet pipes 121 and two cooling liquid outlet pipes 122 are shown in order to avoid complication of the drawing, but there are actually one each.

The U-phase connection portion 110U has a cylindrical shape, and has a liquid-tight structure in which the coolant flowing through the first hollow conductor 221 or the seventh hollow conductor 2207 flows to the fourth hollow conductor 224 or the tenth hollow conductor 2210 without leakage. It's becoming A U-phase line 11U is connected to the U-phase connection portion 110U. The electrical distance from U-phase connection portion 110U to first coil 231, the electrical distance from U-phase connection portion 110U to fourth coil 234, and the electrical distance from U-phase connection portion 110U to seventh coil 2307 , the electrical distance from the U-phase connection portion 110U to the tenth coil 2310 is equal or substantially equal.

Although FIG. 16 describes the U-phase connection portion, the V-phase connection portion 110V and the W-phase connection portion 110W have the same configuration, so the description thereof is omitted.

As can be seen by comparing FIG. 16 with FIG. 3, the configuration of FIG. 16 is basically obtained by preparing two sets of the configuration of FIG. 3 and connecting them in parallel.

FIG. 17 is a diagram showing an example of how the coils are arranged.

In FIG. 14, the coils are expanded and shown in a horizontal row for the sake of simplifying the configuration. Arrange the coils in the order shown in . That is, next to the first coil 231, which is the U-phase coil, is the second coil 232, which is the V-phase coil, in the clockwise direction. Next to the second coil 232 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the fourth coil 234 which is a U-phase coil. Next to the fourth coil 234 is the fifth coil 235 which is the V-phase coil. Next to the fifth coil 235 is the sixth coil 236 which is the W-phase coil. Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is a ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is a tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eleventh coil 2311 which is a V-phase coil. Next to the 11th coil 2311 is the 12th coil 2312 which is a W-phase coil.

Also, even in a 12-coil, 8-pole (12N8P) outer rotor type rotating electric machine, the coils are arranged in the same arrangement as in FIG. 17A, as shown in FIG. 17B.

FIG. 18 is a diagram showing another example of how the coils are arranged.

In the case of an inner rotor type rotating electrical machine with 12 coils and 14 poles (12N14P), the coils are arranged in a row as shown in FIG. 18(A). That is, next to the first coil 231, which is the U-phase coil, is the fourth coil 234, which is the U-phase coil, in the clockwise direction. Next to the fourth coil 234 is the second coil 232 which is a V-phase coil. Next to the second coil 232 is the fifth coil 235 which is a V-phase coil. Next to the fifth coil 235 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the sixth coil 236 which is the W-phase coil.
Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is the eleventh coil 2311 which is the V-phase coil. Next to the eleventh coil 2311 is the ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is the twelfth coil 2312 which is a W-phase coil.

Also, even in a 12-coil, 14-pole (12N14P) outer rotor type rotating electric machine, as shown in FIG. 18B, the coils are arranged in the same arrangement as in FIG. 18A.

FIG. 19 is a diagram showing still another example of how the coils are arranged.

If the electrical energy to mechanical energy converter is a linear motor, arrange the coils in an array as shown in FIG. That is, next to the first coil 231, which is the U-phase coil, is the second coil 232, which is the V-phase coil. Next to the second coil 232 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the fourth coil 234 which is a U-phase coil. Next to the fourth coil 234 is the fifth coil 235 which is the V-phase coil. Next to the fifth coil 235 is the sixth coil 236 which is the W-phase coil. Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is a ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is a tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eleventh coil 2311 which is a V-phase coil. Next to the 11th coil 2311 is the 12th coil 2312 which is a W-phase coil.

FIG. 20 is a diagram for explaining the flow of cooling liquid in FIG. The arrow indicates the flow direction of the cooling liquid.

The coolant that has flowed through the coolant inlet pipe 121 splits, and the first flow flows through the first hollow conductor 221 of the first coil 231, the fourth hollow conductor 224 of the fourth coil 234, or the tenth coil 2310. through the tenth hollow conductor 2210 of the coolant outlet pipe 122 . Another flow flows through the seventh hollow conductor 2207 of the seventh coil 2307 and through the tenth hollow conductor 2210 of the tenth coil 2310 or the fourth hollow conductor 224 of the fourth coil 234 to the coolant outlet pipe 122 . flow.

Another flow flows through the second hollow conductor 222 of the second coil 232 and through the fifth hollow conductor 225 of the fifth coil 235 or the eleventh hollow conductor 2211 of the eleventh coil 2311 to the coolant outlet pipe 122 . flow. Another flow flows through the eighth hollow conductor 2208 of the eighth coil 2308 and through the eleventh hollow conductor 2211 of the eleventh coil 2311 or the fifth hollow conductor 225 of the fifth coil 235 to the coolant outlet pipe 122 . flow.

In addition, another flow flows through the third hollow conductor 223 of the third coil 233 and through the sixth hollow conductor 226 of the sixth coil 236 or the twelfth hollow conductor 2212 of the twelfth coil 2312 to the coolant outlet pipe 122. flow. Another flow flows through the ninth hollow conductor 2209 of the ninth coil 2309 , through the twelfth hollow conductor 2212 of the twelfth coil 2312 or the sixth hollow conductor 226 of the sixth coil 236 to the coolant outlet pipe 122 . flow.

FIG. 21 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. The arrow indicates the direction of current flow.

The current input from the U-phase line 11U flows through the first hollow conductor 221 as one flow, passes through the coolant inlet pipe 121, flows through the second hollow conductor 222, and reaches the V-phase line 11V. Another current input from the U-phase line 11U flows through the fourth hollow conductor 224, passes through the coolant outlet pipe 122, flows through the fifth hollow conductor 225, and reaches the V-phase line 11V. Furthermore, another flow of current input from the U-phase line 11U flows through the seventh hollow conductor 2207, flows through the coolant outlet pipe 122, flows through the eighth hollow conductor 2208, and reaches the V-phase line 11V. . Furthermore, still another flow of the current input from the U-phase line 11U flows through the tenth hollow conductor 2210, flows through the coolant outlet pipe 122, flows through the eleventh hollow conductor 2211, and flows through the V-phase line 11V. reach.

Thus, even with the 12-coil type, it is possible to obtain the same effects as with the 6-coil type of the first embodiment. That is, the coolant (refrigerant) flows through the hollow conductor, and the coolant (refrigerant) is cooled by the radiator 61, so that the electric energy mechanical energy converter has excellent cooling performance.

Further, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by a solid conducting wire 120, so that the conducting wire 120 becomes a neutral point, and high safety performance can be obtained.

Further, as is clear from the comparison between FIG. 5 (6-coil type) and FIG. 15 (12-coil type), when increasing the number of coils, the necessary number of sets of the configuration shown in FIG. 5 can be connected in parallel. For example, in the case of an 18-coil type, three sets of configurations shown in FIG. 5 may be connected in parallel. In the case of a 24-coil type, four sets of configurations shown in FIG. 5 may be connected in parallel.

Then, as shown in FIG. 22, the hollow conductors of each phase are connected to the connection portions of each phase, and the electric wires of each phase are connected to the connection portions. 22, the first hollow conductor 221 of the first coil 231, the fourth hollow conductor 224 of the fourth coil 234, the seventh hollow conductor 2207 of the seventh coil 2307, the tenth hollow conductor 2210 of the tenth coil 2310, The 13th hollow conductor 2213 of the 13th coil 2313, the 16th hollow conductor 2216 of the 16th coil 2316, the 19th hollow conductor 2219 of the 19th coil 2319, and the 22nd hollow conductor 2222 of the 22nd coil 2322 are connected to the U-phase connection portion 110U. , and the U-phase line 11U is connected to the U-phase connection portion 110U.

Also, in FIG. 22, four cooling liquid inlet pipes 121 and four cooling liquid outlet pipes 122 are shown in order to avoid complication of the drawing, but there are actually one each.

In this way, when the number of coils is increased, the necessary number of sets of the configuration shown in FIG. 5 may be connected in parallel.

(Fourth embodiment)
FIG. 23 is a diagram simply showing the configuration of the coils of the rotating electric machine of the fourth embodiment. FIG. 24 is a diagram showing the configuration diagram of FIG. 23 divided into upper and lower parts for the U-phase, V-phase, and W-phase to facilitate understanding of FIG.

In the third embodiment (12-coil type), the number of coils is increased by connecting a plurality of sets of the configuration of the first embodiment (6-coil type) in parallel. In this embodiment, the number of coils is increased by a different connection.

First, the U phase will be explained.
The first coil 231 is formed by winding the first hollow conductor 221 . The first hollow conducting wire 221 has a hollow shape through which cooling liquid can flow. One end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 . The coolant inlet pipe 121 is branched into three paths on the downstream side in the coolant flow direction, and one end (coolant inlet) of the first hollow conducting wire 221 is connected to one of them. The other end (coolant outlet) of the first hollow conductor 221 is connected to one end (coolant inlet) of the fourth hollow conductor 224 of the fourth coil 234 .

The fourth coil 234 is formed by winding the fourth hollow conductor 224 . The fourth hollow conducting wire 224 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fourth hollow conductor 224 is connected to the other end (coolant outlet) of the first hollow conductor 221 . The other end (coolant outlet) of fourth hollow conductor 224 is connected to U-phase connection portion 110U as described later. In addition, the fourth hollow conductor 224 is the same as the first hollow conductor 221 , and the first hollow conductor 221 is wound at a location different from the first coil 231 so that the fourth hollow conductor 224 is formed as Also, the fourth hollow conductor 224 may be formed separately from the first hollow conductor 221 and may be continuous with the first hollow conductor 221 .

Seventh coil 2307 is formed by winding seventh hollow conductor 2207 . The seventh hollow conducting wire 2207 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the seventh hollow conductor 2207 is connected to the U-phase connection portion 110U as described later. The other end (coolant outlet) of the seventh hollow conductor 2207 is connected to one end (coolant inlet) of the tenth hollow conductor 2210 of the tenth coil 2310 .

The tenth coil 2310 is formed by winding the tenth coil 2310 . The tenth hollow conducting wire 2210 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the tenth hollow conductor 2210 is connected to the other end (coolant outlet) of the seventh hollow conductor 2207 . The other end (coolant outlet) of the tenth hollow conductor 2210 is connected to the coolant outlet pipe 122 . The coolant outlet pipe 122 is branched into three paths on the upstream side in the coolant flow direction, and the other end (coolant outlet) of the tenth hollow conducting wire 2210 is connected to one of them. Note that the tenth hollow conductor 2210 is the same as the seventh hollow conductor 2207 , and the seventh hollow conductor 2207 is wound at a different location from the seventh coil 2307 so that the tenth hollow conductor 2210 is formed as Also, the tenth hollow conductor 2210 may be formed separately from the seventh hollow conductor 2207 so as to be continuous with the seventh hollow conductor 2207 .

A U-phase line 11U is connected to the U-phase connection portion 110U.

The same is true for the V phase.

That is, the second coil 232 is formed by winding the second hollow conductor 222 . The second hollow conducting wire 222 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the second hollow conductor 222 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the second hollow conductor 222 is connected to one end (coolant inlet) of the fifth hollow conductor 225 of the fifth coil 235 .

The fifth coil 235 is formed by winding the fifth hollow conductor 225 . The fifth hollow conductor 225 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fifth hollow conductor 225 is continuous with the other end (coolant outlet) of the second hollow conductor 222 . The other end (coolant outlet) of the fifth hollow conductor 225 is connected to the V-phase connection portion 110V. In addition, the fifth hollow conductor 225 is the same as the second hollow conductor 222, and the second hollow conductor 222 is wound at a location different from the second coil 232 to form the fifth hollow conductor 225. formed. Also, the fifth hollow conductor 225 may be formed separately from the second hollow conductor 222 and may be continuous with the second hollow conductor 222 .

Eighth coil 2308 is formed by winding eighth hollow conductor 2208 . The eighth hollow conductor 2208 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the eighth hollow conductor 2208 is connected to the V-phase connection portion 110V. The other end (coolant outlet) of the eighth hollow conductor 2208 is connected to one end (coolant inlet) of the eleventh hollow conductor 2211 of the eleventh coil 2311 .

The eleventh coil 2311 is formed by winding the eleventh hollow conductor 2211 . The eleventh hollow conducting wire 2211 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the eleventh hollow conductor 2211 is connected to the other end (coolant outlet) of the eighth hollow conductor 2208 . The other end (coolant outlet) of the eleventh hollow conductor 2211 is connected to the coolant outlet pipe 122 . Note that the eleventh hollow conductor 2211 is the same as the eighth hollow conductor 2208, and the eighth hollow conductor 2208 is wound at a location different from the eighth coil 2308 so that the eleventh hollow conductor 2211 is wound. is formed as Also, the eleventh hollow conductor 2211 may be formed separately from the eighth hollow conductor 2208 so as to be continuous with the eighth hollow conductor 2208 .

A V-phase line 11V is connected to the V-phase connection portion 110V.

The same is true for the W phase.

That is, the third coil 233 is formed by winding the third hollow conductor 223 . The third hollow conducting wire 223 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the third hollow conductor 223 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the third hollow conductor 223 is connected to one end (coolant inlet) of the sixth hollow conductor 226 of the sixth coil 236 .

The sixth coil 236 is formed by winding the sixth hollow conductor 226 . The sixth hollow conducting wire 226 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the sixth hollow conductor 226 is connected to the other end (coolant outlet) of the third hollow conductor 223 . The other end (coolant outlet) of the sixth hollow conductor 226 is connected to the W-phase connection portion 110W. In addition, the sixth hollow conductor 226 is the same as the third hollow conductor 223 , and the third hollow conductor 223 is wound at a location different from the third coil 233 so that the sixth hollow conductor 226 is formed as Also, the sixth hollow conductor 226 may be formed separately from the third hollow conductor 223 and may be continuous with the third hollow conductor 223 .

The ninth coil 2309 is formed by winding the ninth hollow conductor 2209 . The ninth hollow conducting wire 2209 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the ninth hollow conductor 2209 is connected to the W-phase connection portion 110W. The other end (coolant outlet) of the ninth hollow conductor 2209 is connected to one end (coolant inlet) of the twelfth hollow conductor 2212 of the twelfth coil 2312 .

The twelfth coil 2312 is formed by winding the twelfth hollow conductor 2212 . The twelfth hollow conducting wire 2212 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the twelfth hollow conductor 2212 is connected to the other end (coolant outlet) of the ninth hollow conductor 2209 . The other end (coolant outlet) of the twelfth hollow conductor 2212 is connected to the coolant outlet pipe 122 . In addition, the twelfth hollow conductor 2212 is the same as the ninth hollow conductor 2209 , and the ninth hollow conductor 2209 is wound at a different location from the ninth coil 2309 to form the twelfth hollow conductor 2212 . is formed as Also, the twelfth hollow conductor 2212 may be formed separately from the ninth hollow conductor 2209 so as to be continuous with the ninth hollow conductor 2209 .

A W-phase line 11W is connected to the W-phase connection portion 110W.

FIG. 25 is a diagram illustrating a U-phase connection portion. Note that FIG. 25A is a plan cross-sectional view of the U-phase connection portion 110U, and FIG. 25B is a simplified illustration of the vicinity of the U-phase connection portion.

As described above, the other end (coolant outlet) of the first hollow conductor 221 is connected to one end (coolant inlet) of the fourth hollow conductor 224 . Therefore, it can be said that the first coil 231 (first hollow conducting wire 221) and the fourth coil 234 (fourth hollow conducting wire 224) are connected in series. In addition, the fourth hollow conductor 224 may be the same as the first hollow conductor 221 . That is, the first hollow conductor 221 may be wound to form the first coil 231 and may also be wound at a location different from the first coil 231 to form the fourth coil 234 .

The other end (coolant outlet) of the seventh hollow conductor 2207 is connected to one end (coolant inlet) of the tenth hollow conductor 2210 . Therefore, it can be said that the seventh coil 2307 (the seventh hollow conducting wire 2207) and the tenth coil 2310 (the tenth hollow conducting wire 2210) are also connected in series. Note that the tenth hollow conductor 2210 may be the same as the seventh hollow conductor 2207 . That is, the seventh hollow conductor 2207 may be wound to form the seventh coil 2307 and may also be wound at a location different from the seventh coil 2307 to form the tenth coil 2310 .

The other end (coolant outlet) of fourth hollow conductor 224 is connected to U-phase connection portion 110U. One end (coolant inlet) of the seventh hollow conductor 2207 is also connected to the U-phase connection portion 110U. Therefore, it can be said that the series-connected first coil 231 and fourth coil 234 and the series-connected seventh coil 2307 and tenth coil 2310 are connected in parallel.

The U-phase connection portion 110U has a tubular shape, and has a liquid-tight structure in which the coolant flowing through the fourth hollow conductor 224 flows to the seventh hollow conductor 2207 without leaking. A U-phase line 11U is connected to the U-phase connection portion 110U. The electrical distance from U-phase connection portion 110U to fourth coil 234 and the electrical distance from U-phase connection portion 110U to seventh coil 2307 are equal or substantially equal. Also, the electrical distance from the U-phase connection portion 110U to the first coil 231 and the electrical distance from the U-phase connection portion 110U to the tenth coil 2310 are equal or substantially equal.

Also, as described above, one end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 , and the other end (coolant outlet) of the tenth hollow conductor 2210 is connected to the coolant outlet pipe 122 . It is connected. The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected by a solid lead wire 120 .

Although FIG. 25 describes the U-phase connection portion, the V-phase connection portion 110V and the W-phase connection portion 110W have the same configuration, so the description thereof is omitted.

FIG. 26 is a diagram showing an example of how coils are arranged.
In FIG. 23, the coils are expanded and shown side by side in order to simply show the configuration. Place each coil in the sequence as shown. That is, next to the first coil 231, which is the U-phase coil, is the second coil 232, which is the V-phase coil, in the clockwise direction. Next to the second coil 232 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the fourth coil 234 which is a U-phase coil. Next to the fourth coil 234 is the fifth coil 235 which is the V-phase coil. Next to the fifth coil 235 is the sixth coil 236 which is the W-phase coil. Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is a ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is a tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eleventh coil 2311 which is a V-phase coil. Next to the 11th coil 2311 is the 12th coil 2312 which is a W-phase coil.

Such arrangement is the same as in the third embodiment, as is clear from FIG. 17(A). A 12-coil, 8-pole (12N8P) outer rotor type rotating electric machine is also the same as the third embodiment shown in FIG.

In the case of an inner rotor type rotating electric machine with 12 coils and 14 poles (12N14P), the coils are arranged as shown in FIG. 26(B). That is, next to the first coil 231, which is the U-phase coil, is the fourth coil 234, which is the U-phase coil, in the clockwise direction. Next to the fourth coil 234 is the second coil 232 which is a V-phase coil. Next to the second coil 232 is the fifth coil 235 which is a V-phase coil. Next to the fifth coil 235 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the sixth coil 236 which is the W-phase coil. Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is the eleventh coil 2311 which is the V-phase coil. Next to the eleventh coil 2311 is the ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is the twelfth coil 2312 which is a W-phase coil.

Such arrangement is the same as in the third embodiment, as is clear from FIG. 18(A). A 12-coil, 14-pole (12N14P) outer rotor type rotating electric machine is also the same as the third embodiment shown in FIG.

Furthermore, if the electrical energy mechanical energy converter is a linear motor, the coils are arranged in a row as shown in FIG. 26(C). That is, next to the first coil 231, which is the U-phase coil, is the second coil 232, which is the V-phase coil. Next to the second coil 232 is the third coil 233 which is the W-phase coil. Next to the third coil 233 is the fourth coil 234 which is a U-phase coil. Next to the fourth coil 234 is the fifth coil 235 which is the V-phase coil. Next to the fifth coil 235 is the sixth coil 236 which is the W-phase coil. Next to the sixth coil 236 is the seventh coil 2307 which is a U-phase coil. Next to the seventh coil 2307 is the eighth coil 2308 which is the V-phase coil. Next to the eighth coil 2308 is a ninth coil 2309 which is a W-phase coil. Next to the ninth coil 2309 is a tenth coil 2310 which is a U-phase coil. Next to the tenth coil 2310 is the eleventh coil 2311 which is a V-phase coil. Next to the 11th coil 2311 is the 12th coil 2312 which is a W-phase coil.

Such arrangement is the same as in the third embodiment, as is clear from FIG.

FIG. 27 is a diagram for explaining the flow of coolant in FIG. 23. FIG. The arrow indicates the flow direction of the cooling liquid.

The coolant that has flowed through the coolant inlet pipe 121 splits, and the first flow is the first coil 231 →fourth coil 234 →seventh coil 2307 →tenth coil 2310 →coolant outlet pipe 122 .

Another flow is the second hollow conductor 222 of the second coil 232→the fifth hollow conductor 225 of the fifth coil 235→the eighth hollow conductor 2208 of the eighth coil 2308→the eleventh hollow conductor 2211 of the eleventh coil 2311. → Flows through the coolant outlet pipe 122 .

Furthermore, another flow is the third hollow conductor 223 of the third coil 233→the sixth hollow conductor 226 of the sixth coil 236→the ninth hollow conductor 2209 of the ninth coil 2309→the twelfth hollow conductor 2212 of the twelfth coil 2312. → Flows through the coolant outlet pipe 122 .

FIG. 28 is a diagram for explaining how current flows from U-phase line 11U to V-phase line 11V with reference to the developed view shown in FIG. The arrow indicates the direction of current flow.

The current input from the U-phase line 11U flows as one flow in the following order: fourth coil 234→first coil 231→coolant inlet pipe 121→second coil 232→fifth coil 235→V-phase line 11V.

Another flow of the current input from the U-phase line 11U is the seventh coil 2307→tenth coil 2310→coolant outlet pipe 122→eleventh coil 2311→eighth coil 2308→V-phase line 11V. .

Thus, even with the type in which the series-connected hollow conductors are further connected in parallel as in the fourth embodiment, it is possible to obtain the same effects as the type in which the hollow conductors are connected in parallel as in the third embodiment. can. That is, the coolant (refrigerant) flows through the hollow conductor, and the coolant (refrigerant) is cooled by the radiator 61, so that the electric energy mechanical energy converter has excellent cooling performance.

Further, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by a solid conducting wire 120, so that the conducting wire 120 becomes a neutral point, and high safety performance can be obtained.

When the number of coils is increased, for example, in the case of 24 coils, the U-phase will be explained as shown in FIG. That is, the following configuration is added to the configuration of FIG. A thirteenth coil 2313 and a sixteenth coil 2316 are configured in series. One end (coolant inlet) of the thirteenth hollow conductor 2213 of the thirteenth coil 2313 is connected to the coolant inlet pipe 121 . Also, the other end (coolant outlet) of the sixteenth hollow conductor 2216 of the sixteenth coil 2316 is connected to the U-phase connection portion 110U. Also, the 19th coil 2319 and the 22nd coil 2322 are configured in series. Then, one end (coolant inlet) of the nineteenth hollow conductor 2219 of the nineteenth coil 2319 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the 22nd hollow conductor 2222 of the 22nd coil 2322 is connected to the coolant outlet pipe 122 .

In FIG. 29, two cooling liquid inlet pipes 121 and two cooling liquid outlet pipes 122 are shown in order to avoid complication of the drawing, but there are actually one each.

The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected by a solid lead wire 120 .

The electrical distance from U-phase connection portion 110U to fourth coil 234, the electrical distance from U-phase connection portion 110U to seventh coil 2307, and the electrical distance from U-phase connection portion 110U to sixteenth coil 2316 The distance and the electrical distance from U-phase connection portion 110U to 19th coil 2319 are equal or substantially equal.

Also, the electrical distance from U-phase connection portion 110U to first coil 231, the electrical distance from U-phase connection portion 110U to tenth coil 2310, and the electrical distance from U-phase connection portion 110U to thirteenth coil 2313 The distance and the electrical distance from the U-phase connection portion 110U to the 22nd coil 2322 are also equal or substantially equal.

FIG. 29 describes the U phase, but the V phase and W phase have the same configuration, so the description is omitted.

By configuring in this way, a 24-coil type can be obtained.

In the case of 36 coils, the U-phase will be explained as shown in FIG. That is, the following configuration is added to the configuration of FIG. A twenty-fifth coil 2325 and a twenty-eighth coil 2328 are configured in series. One end (coolant inlet) of the 25th hollow conductor 2225 of the 25th coil 2325 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the 28th hollow conductor 2228 of the 28th coil 2328 is connected to the U-phase connection portion 110U. Furthermore, the 31st coil 2331 and the 34th coil 2334 are configured in series. One end (coolant inlet) of the 31st hollow conductor 2231 of the 31st coil 2331 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the 34th hollow conductor 2234 of the 34th coil 2334 is connected to the coolant outlet pipe 122 .

In FIG. 30, three cooling liquid inlet pipes 121 and three cooling liquid outlet pipes 122 are shown in order to avoid complication of the drawing, but there are actually one each.

The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected by a solid lead wire 120 .

The electrical distance from U-phase connection portion 110U to fourth coil 234, the electrical distance from U-phase connection portion 110U to seventh coil 2307, and the electrical distance from U-phase connection portion 110U to sixteenth coil 2316 distance, electrical distance from U-phase connection portion 110U to 19th coil 2319, electrical distance from U-phase connection portion 110U to 28th coil 2328, and electrical distance from U-phase connection portion 110U to 31st coil 2331. is equal or approximately equal to the target distance.

Also, the electrical distance from U-phase connection portion 110U to first coil 231, the electrical distance from U-phase connection portion 110U to tenth coil 2310, and the electrical distance from U-phase connection portion 110U to thirteenth coil 2313 distance, electrical distance from U-phase connection portion 110U to 22nd coil 2322, electrical distance from U-phase connection portion 110U to 25th coil 2325, and electrical distance from U-phase connection portion 110U to 34th coil 2334. The target distances are also equal or approximately equal.

FIG. 30 describes the U phase, but the V phase and W phase have the same configuration, so the description is omitted.

By configuring in this way, a 36-coil type can be obtained.

In the case of 48 coils, the U-phase will be explained as shown in FIG. That is, the following configuration is added to the configuration of FIG. A 37th coil 2337 and a 40th coil 2340 are configured in series. One end (coolant inlet) of the 37th hollow conductor 2237 of the 37th coil 2337 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the 40th hollow conductor 2240 of the 40th coil 2340 is connected to the U-phase connection portion 110U. Furthermore, the 43rd coil 2343 and the 46th coil 2346 are configured in series. One end (coolant inlet) of the 43rd hollow conductor 2243 of the 43rd coil 2343 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the 46th hollow conductor 2246 of the 46th coil 2346 is connected to the coolant outlet pipe 122 .

In FIG. 31, four cooling liquid inlet pipes 121 and four cooling liquid outlet pipes 122 are shown in order to avoid complication of the drawing, but there are actually one each.

The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected by a solid lead wire 120 .

The electrical distance from U-phase connection portion 110U to fourth coil 234, the electrical distance from U-phase connection portion 110U to seventh coil 2307, and the electrical distance from U-phase connection portion 110U to sixteenth coil 2316 distance, electrical distance from U-phase connection portion 110U to 19th coil 2319, electrical distance from U-phase connection portion 110U to 28th coil 2328, and electrical distance from U-phase connection portion 110U to 31st coil 2331. The physical distance, the electrical distance from the U-phase connection portion 110U to the 40th coil 2340, and the electrical distance from the U-phase connection portion 110U to the 43rd coil 2343 are equal or substantially equal.

Also, the electrical distance from U-phase connection portion 110U to first coil 231, the electrical distance from U-phase connection portion 110U to tenth coil 2310, and the electrical distance from U-phase connection portion 110U to thirteenth coil 2313 distance, electrical distance from U-phase connection portion 110U to 22nd coil 2322, electrical distance from U-phase connection portion 110U to 25th coil 2325, and electrical distance from U-phase connection portion 110U to 34th coil 2334. The physical distance, the electrical distance from the U-phase connection portion 110U to the 37th coil 2337, and the electrical distance from the U-phase connection portion 110U to the 46th coil 2346 are also equal or substantially equal.

FIG. 31 describes the U phase, but the V phase and W phase have the same configuration, so the description is omitted.

By configuring in this way, a 48-coil type can be obtained.

(Fifth embodiment)
FIG. 32 is a diagram for explaining the U-phase connection portion of the fifth embodiment. Note that FIG. 32(A) is a plan sectional view of the U-phase connection portion 110U, and FIG. 32(B) is a simplified illustration of the vicinity of the U-phase connection portion.

In the fourth embodiment, two coils are connected in series, one end (coolant inlet) of the hollow conductor of one coil is connected to the coolant inlet pipe 121, and the other end of the hollow conductor of the other coil is connected to the coolant inlet pipe 121. (cooling liquid outlet) is connected to a connecting portion such as a U phase. Furthermore, another two coils are also connected in series, one end of the hollow conductor of one coil (cooling liquid inlet) is connected to a connection part such as a U phase, and the other end of the hollow conductor of the other coil (cooling liquid inlet) is connected liquid outlet) is connected to the coolant outlet tube 122 . A plurality of groups of coils having such a configuration are prepared and connected to a connecting portion such as a U-phase to cope with an increase in the number of coils. Therefore, the number of coils and the number of groups of coils are increased at the connecting portion such as the U-phase, so that a relatively large space is required.

In contrast, the present embodiment is configured as follows. That is, the first coil 231, the fourth coil 234, the seventh coil 2307, and the tenth coil 2310 are connected in series. One end (coolant inlet) of the first hollow conductor 221 of the first coil 231 is connected to the coolant inlet pipe 121 . In addition, the other end (coolant outlet) of tenth hollow conductor 2210 of tenth coil 2310 is connected to U-phase connection portion 110U. Furthermore, the 13th coil 2313, the 16th coil 2316, the 19th coil 2319, and the 22nd coil 2322 are connected in series. One end (coolant inlet) of the thirteenth hollow conductor 2213 of the thirteenth coil 2313 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the 22nd hollow conductor 2222 of the 22nd coil 2322 is connected to the coolant outlet pipe 122 .

The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected by a solid conductor 120 .

The electrical distance from the U-phase connection portion 110U to the tenth coil 2310 and the electrical distance from the U-phase connection portion 110U to the thirteenth coil 2313 are equal or substantially equal. Also, the electrical distance from the U-phase connection portion 110U to the seventh coil 2307 and the electrical distance from the U-phase connection portion 110U to the sixteenth coil 2316 are equal or substantially equal. Furthermore, the electrical distance from the U-phase connection portion 110U to the fourth coil 234 and the electrical distance from the U-phase connection portion 110U to the 19th coil 2319 are equal or substantially equal. Furthermore, the electrical distance from the U-phase connection portion 110U to the first coil 231 and the electrical distance from the U-phase connection portion 110U to the 22nd coil 2322 are equal or substantially equal.

FIG. 32 describes the U phase, but the V phase and W phase have the same configuration, so the description is omitted.

In this embodiment, the increase in the number of coils is dealt with by increasing the number of coils connected in series. By configuring in this way, a 24-coil type can be obtained. Further, by configuring as in this embodiment, even if the number of coils is increased, it is possible to reduce the space of the U phase or the like. Also, at the design stage of the coil, it is possible to use either the coil winding form of the fourth embodiment or the fifth embodiment, or to select the optimum shape depending on the internal space and each parameter.

(Sixth embodiment)
FIG. 33 is a diagram simply showing the configuration of the coils of the electrical energy mechanical energy converter system of the sixth embodiment. FIG. 34 is a diagram showing the configuration diagram of FIG. 33 divided into upper and lower parts of the U-phase, V-phase, and W-phase to facilitate understanding of FIG.

Although each of the above embodiments is a concentrated winding type in which the coils do not overlap, the present invention is not limited to this. A distributed winding type in which each coil overlaps may be used.

The electrical energy mechanical energy converter system shown in FIG. 33 is of distributed winding type with overlapping coils.

Six coils are arranged on the inner peripheral surface of the stator core 21 of the stator 2 of this embodiment. Specifically, the stator core 21 is provided with a first coil 231, a second coil 232, a third coil 233, a fourth coil 234, a fifth coil 235, and a sixth coil 236. there is

The first coil 231 is formed by winding the first hollow conductor 221 . The first hollow conducting wire 221 has a hollow shape through which cooling liquid can flow. One end (coolant inlet) of the first hollow conductor 221 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the first hollow conductor 221 is connected to the U-phase connection portion 110U.

The second coil 232 is formed by winding the second hollow conductor 222 . In the drawing, the second coil 232 is shown to be one size larger than the first coil 231 to avoid complication, but they are actually of similar size. The second coils 232 are arranged so as to alternately overlap with the first coils 231 . The second hollow conducting wire 222 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the second hollow conductor 222 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the second hollow conductor 222 is connected to the V-phase connection portion 110V.

The third coil 233 is formed by winding the third hollow conductor 223 . In the drawing, the third coil 233 is shown to be one size larger than the second coil 232 in order to avoid complication, but they are actually the same size. The third coils 233 are arranged so as to alternately overlap the second coils 232 on the side opposite to the first coils 231 . The third hollow conducting wire 223 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the third hollow conductor 223 is connected to the coolant inlet pipe 121 . The other end (coolant outlet) of the third hollow conductor 223 is connected to the W-phase connection portion 110W.

The fourth coil 234 is formed by winding the fourth hollow conductor 224 . In the drawing, the fourth coil 234 is shown to be one size larger than the third coil 233 in order to avoid complication, but they are actually the same size. The fourth coils 234 are arranged so as to alternately overlap the third coils 233 on the side opposite to the second coils 232 . The fourth hollow conducting wire 224 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fourth hollow conductor 224 is connected to the U-phase connection portion 110U. The other end (coolant outlet) of the fourth hollow conductor 224 is connected to the coolant outlet pipe 122 .

The fifth coil 235 is formed by winding the fifth hollow conductor 225 . In the drawing, the fifth coil 235 is shown to be one size larger than the fourth coil 234 in order to avoid complication, but they are actually of similar size. The fifth coils 235 are arranged so as to alternately overlap the fourth coils 234 on the side opposite to the third coils 233 . The fifth hollow conductor 225 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the fifth hollow conductor 225 is connected to the V-phase connection portion 110V. The other end (coolant outlet) of the fifth hollow conductor 225 is connected to the coolant outlet pipe 122 .

The sixth coil 236 is formed by winding the sixth hollow conductor 226 . In the drawing, the sixth coil 236 is shown to be one size larger than the fifth coil 235 to avoid complication, but they are actually of similar size. The sixth coils 236 are arranged alternately on the opposite side of the fourth coils 234 so as to overlap the fifth coils 235 . The sixth hollow conducting wire 226 has a hollow shape through which the coolant can flow. One end (coolant inlet) of the sixth hollow conductor 226 is connected to the W-phase connection portion 110W. The other end (coolant outlet) of the sixth hollow conductor 226 is connected to the coolant outlet pipe 122 .

The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are hollow through which the cooling liquid can flow. The cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected via a solid lead wire 120 .

U-phase line 11U is connected to U-phase connection portion 110U. A V-phase line 11V is connected to the V-phase connection portion 110V. A W-phase line 11W is connected to the W-phase connection portion 110W.

Although FIGS. 33 and 34 are simplified to avoid complication of the drawings, the electrical distance from the U-phase connection portion 110U to the first coil 231 and the distance from the U-phase connection portion 110U to the fourth coil 231 are shown. The electrical distance to coil 234 is equal or approximately equal.

Also, the electrical distance from the V-phase connection portion 110V to the second coil 232 and the electrical distance from the V-phase connection portion 110V to the fifth coil 235 are equal or substantially equal.

Furthermore, the electrical distance from the W-phase connection portion 110W to the third coil 233 and the electrical distance from the W-phase connection portion 110W to the sixth coil 236 are equal or substantially equal.

With such a configuration, a distributed winding type rotating electrical machine in which the coils are overlapped can be obtained.

The flow of cooling liquid will be described.
FIG. 35 is a diagram for explaining the flow of coolant in FIG. 33. FIG. The arrow indicates the flow direction of the cooling liquid.

The cooling liquid that has flowed through the cooling liquid inlet pipe 121 is divided into three flows.
The first flow flows through the first hollow conductor 221 of the first coil 231 and through the second hollow conductor 222 of the second coil 232 to the coolant outlet pipe 122 .

The second flow flows through the third hollow conductor 223 of the third coil 233 and through the fourth hollow conductor 224 of the fourth coil 234 to the coolant outlet pipe 122 .

A third flow flows through the fifth hollow conductor 225 of the fifth coil 235 and through the sixth hollow conductor 226 of the sixth coil 236 to the coolant outlet tube 122 .

Next, the flow of current will be described.
FIG. 36 is a diagram for explaining how current flows from the U-phase line 11U to the V-phase line 11V in FIG. The arrow indicates the direction of current flow.

The current input from the U-phase line 11U flows as one flow through the first hollow conductor 221, the coolant inlet pipe 121, the third hollow conductor 223, and reaches the V-phase line 11V. Another current input from the U-phase line 11U flows through the second hollow conductor 222, passes through the coolant outlet pipe 122, flows through the fourth hollow conductor 224, and reaches the V-phase line 11V.

In this way, even with the type in which the coils overlap, it is possible to obtain the same effects as those in the type in which the coils do not overlap. That is, the coolant (refrigerant) flows through the hollow conductor, and the coolant (refrigerant) is cooled by the radiator 61, so that the electric energy mechanical energy converter has excellent cooling performance.

Further, the cooling liquid inlet pipe 121 and the cooling liquid outlet pipe 122 are electrically connected by a solid conducting wire 120, so that the conducting wire 120 becomes a neutral point, and high safety performance can be obtained.

(Seventh embodiment)
FIG. 37 is a diagram showing a seventh embodiment of a rotating electric machine, and is a diagram for explaining a U-phase connection portion. Note that FIG. 37A is a plan cross-sectional view of the U-phase connection portion 110U, and FIG. 37B is a simplified illustration of the vicinity of the U-phase connection portion.

In the first embodiment, the coil is formed by winding one hollow conductive wire. In contrast, in this seventh embodiment, the coil is formed by winding two hollow conductors together.

Specifically, two hollow conductors 221-1 and 221-2 are wound to form coils 231-1 and 231-2. That is, in this embodiment, one hollow conducting wire in the first embodiment is constituted by two.

In Japanese Unexamined Patent Application Publication No. 2004-135386, a special manufacturing apparatus is required because a special hollow conductor that is doubled by being folded halfway is wound. On the other hand, the rotating electric machine of the present embodiment does not require a special manufacturing apparatus and has good productivity because the two hollow conductors are wound together.
In the above-mentioned conventional electric machine, the stator coil is formed by winding a single hollow conductor that is doubled by folding halfway, so a special hollow conductor manufacturing device and winding device are required. Productivity was poor. In addition, even when a plurality of hollow conductor wires are wound in a bundle, a pair of hollow conductor wires must be used for winding in order to secure a reciprocating flow path.
Furthermore, when the necessary pressure of the cooling water is obtained using Bernoulli's theorem, when the length and cross-sectional area of the hollow conductor of the coil are constant, in the case of Japanese Patent Application Laid-Open No. 2004-135386, the cooling water Since two round-trip passages (two passages) are required, for hollow conductors with the same length and the same cross-sectional area, the inner diameter of each piping of the round-trip passage is 1/2 of the cross-sectional area of one side of the hollow conductor with one passage. Therefore, when the flow rate of the cooling water is the same, the required pressure of the pump becomes more than five times. If the cooling water pressure is the same, the cooling water flow rate is about 1/3, and the amount of heat removed from the coil is about 1/3, so the pump power required for cooling is required to be 5 times or more, power loss. It is not preferable from the point of view of Also, when a cooling system with the same pressure and the same upper limit of temperature is used, the output that can be taken out from the rotating electric machine is about 1/2. That is, in order to obtain the same cooling capacity, it is necessary to double the cross-sectional area of the hollow conductor, which increases the volume and weight of the rotating electric machine.

One ends (coolant inlets) of the hollow conductors 221-1 and 221-2 are connected to the coolant inlet pipe 121. As shown in FIG. The other ends (coolant outlets) of the hollow conductors 221-1 and 221-2 are connected to the U-phase connection portion 110U.

Also, two hollow conductors 224-1 and 224-2 are wound to form coils 234-1 and 234-2.

One end (coolant inlet) of hollow conductor 224-1 and hollow conductor 224-2 is connected to U-phase connection portion 110U. The other ends (coolant outlets) of the hollow conductors 224 - 1 and 224 - 2 are connected to the coolant outlet pipe 122 .

U-phase line 11U is connected to U-phase connection portion 110U. The electrical distance from U-phase connection portion 110U to coils 231-1 and 231-2 and the electrical distance from U-phase connection portion 110U to coils 234-1 and 234-2 are equal or substantially equal. The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected via a solid conductor 120 .

Although FIG. 37 describes the U-phase connection portion, the V-phase connection portion 110V and the W-phase connection portion 110W have the same configuration, so the description thereof is omitted. Also, since the coolant and the electric flow are the same as those in the first embodiment, the explanation is omitted.

With such a configuration, it becomes possible to use hollow conductors thinner than in the first embodiment, and the winding density can be increased.

(Eighth embodiment)
FIG. 38 is a diagram showing an eighth embodiment of a rotating electric machine, and is a diagram for explaining a U-phase connection portion. Note that FIG. 38(A) is a plan cross-sectional view of the U-phase connection portion 110U, and FIG. 38(B) is a simplified illustration of the vicinity of the U-phase connection portion.

In the seventh embodiment, the coil is formed by winding two hollow conductors together. In contrast, in this eighth embodiment, the coil is formed by winding together three hollow conductors.

Specifically, three hollow conductors 221-1, 221-2 and 221-3 are wound to form coils 231-1, 231-2 and 231-3. That is, in this embodiment, one hollow conducting wire in the first embodiment is composed of three.

One ends (coolant inlets) of the hollow conductors 221 - 1 , 221 - 2 and 221 - 3 are connected to the coolant inlet pipe 121 . The other ends (coolant outlets) of the hollow conductors 221-1, 221-2 and 221-3 are connected to the U-phase connection portion 110U.

Three hollow conductors 224-1, 224-2 and 224-3 are wound to form coils 234-1, 234-2 and 234-3.

One ends (coolant inlets) of the hollow conductors 224-1, 224-2 and 224-3 are connected to the U-phase connection portion 110U. The other ends (coolant outlets) of the hollow conductors 224 - 1 , 224 - 2 and 224 - 3 are connected to the coolant outlet pipe 122 .

U-phase line 11U is connected to U-phase connection portion 110U. The electrical distances from U-phase connection portion 110U to coils 231-1, 231-2, and 231-3 are equal to the electrical distances from U-phase connection portion 110U to coils 234-1, 234-2, and 234-3. Or they are approximately equal. The coolant inlet pipe 121 and the coolant outlet pipe 122 are electrically connected via a solid conductor 120 .

FIG. 38 illustrates the U-phase connection portion, but the V-phase connection portion 110V and the W-phase connection portion 110W have the same configuration, so the description thereof is omitted. Also, since the coolant and the electric flow are the same as those in the first embodiment, the explanation is omitted.

With such a configuration, in a structure that cannot be handled with a single hollow conductor, by winding more conductors in parallel than in the first and seventh embodiments, the current density and cooling water pressure can be reduced. This makes it possible to achieve even higher output. There is no upper limit to the number of wound hollow conductors, and the number of bundles is determined at the time of design.

In this way, it is possible to form a coil by bundling and winding a plurality of hollow conductors, and it is possible to wind without changing the design specifications of the existing rotating electric machine greatly, and the degree of freedom in design is increased. Increase.

(Second Embodiment of Electrical Energy Mechanical Energy Converter System)
FIG. 39 is a diagram illustrating another example of an electrical energy mechanical energy converter system.

In FIG. 12, a radiator 61 is provided in the coolant circulation path 50, and a cooling fan 62 blows air to the radiator 61, thereby promoting a decrease in the temperature of the coolant flowing through the radiator 61. A converter system S was shown.

In contrast, the electrical energy mechanical energy converter system S shown in FIG. 39 comprises an electrical energy mechanical energy converter unit U and a cooling system S1.

The electrical energy-mechanical energy converter unit U includes a rotary electric machine (electrical energy-mechanical energy converter) 1 , a circulation pump 5 , a plate-fin heat exchanger 631 , and a controller 7 . Since the basic configuration is the same as that of the electrical energy mechanical energy converter system shown in FIG. 1, the same reference numerals are given to the parts that perform the same functions, and overlapping explanations will be omitted as appropriate.

However, in the electrical energy mechanical energy converter unit U, the coolant circuit 50 is provided with a plate-fin heat exchanger 631 . The rotary electric machine (electrical energy-mechanical energy converter) 1, the circulation pump 5, the plate-fin heat exchanger 631, and the controller 7 are unitized.

The cooling system S<b>1 includes a plate-fin heat exchanger 632 , a circulation pump 52 and a heat exchange section 602 .

The plate-fin heat exchanger 632 is paired with the plate-fin heat exchanger 631 and is set on the plate-fin heat exchanger 631 .

The circulation pump 52 is provided in the coolant circulation path 502 . More specifically, the circulation pump 52 is provided upstream of the plate-fin heat exchanger 632 in the coolant flow direction of the coolant circulation path 502 .

The heat exchange section 602 includes a radiator 612 and a cooling fan 622 . A radiator 612 is provided in the coolant circuit 502 . More specifically, the radiator 612 is provided downstream of the plate-fin heat exchanger 632 in the coolant flow direction of the coolant circulation path 502 and upstream of the circulation pump 52 in the coolant flow direction of the coolant circulation path 502 . . Cooling fan 622 blows air to radiator 612 to help reduce the temperature of the coolant flowing through radiator 612 .

Thus, if the electrical energy mechanical energy converter 1 is unitized together with the circulation pump 5, the plate-fin heat exchanger 631, etc., a conventional system can be used as the cooling system S1. For example, in the case of a conversion EV that converts an internal combustion engine vehicle into an electric vehicle, an electric energy mechanical energy converter unit U is installed instead of the internal combustion engine, and a radiator or the like conventionally installed in the vehicle is used to A cooling system S1 may be used. Also, in a ship or the like, the motor main body can be cooled secondarily with seawater or the like without directly circulating a highly corrosive refrigerant.

By doing so, the manufacturing cost of the electrical energy mechanical energy converter system S can be kept low.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of application examples of the present invention, and the technical scope of the present invention is not limited to the specific configurations of the above embodiments. do not have.

Any type of rotating electrical machine is acceptable. For example, it can be applied to an axial flux type rotating electric machine, an SR rotating electric machine, an induction rotating electric machine, a synchronous rotating electric machine, a synchronous reluctance rotating electric machine, a yokeless rotating electric machine, and the like.

The refrigerants to be used include not only water-based refrigerants and gases such as air, but also antifreeze liquids, liquefied CFCs and halons, liquefied hydrocarbons, silicone oils, liquefied ammonia, liquefied nitrogen, liquefied hydrogen, It may be liquefied rare gases, liquefied carbon dioxide, or the like. The coolant such as water may be appropriately mixed with an additive such as an anti-corrosion agent.

A superconducting electric rotating machine can be obtained by using a cryogenic refrigerant such as liquid nitrogen or liquid helium as the coolant and using a hollow conductor as the superconducting material.

Furthermore, an ion exchange resin filter may be installed on the refrigerant path. By doing so, it is possible to remove the ions in the refrigerant, reduce the electrical conductivity of the refrigerant, and increase the insulation, and even if the conductive refrigerant leaks, the leakage will be minimized. It is possible to limit it.

Furthermore, in the above description, a case where the electrical energy mechanical energy converter system is mounted on a machine whose output is adjusted has been described, but the present invention is not limited to this. You may use it for generators, such as a windmill and a watermill. It can also be used as a generator for hybrid units, and in this case, the system can be made highly efficient, compact, and lightweight. Moreover, you may use it for a portable type generator. Moreover, you may use for the rotary electric machine for robots.

As for the shape of the coil, which is a conductive wire, a round shape, a rectangular shape, a polygonal shape, or the like can be used, and it may be formed by a metal 3D printer. In addition, regarding the coil material, any conductor can be used without being limited to copper or aluminum.

Note that the above embodiments can be combined as appropriate.

1 Electrical energy mechanical energy converter (rotating electric machine, linear motor)
2 Stator 11U U-phase wire 11V V-phase wire 11W W-phase wire 120 Connection wire 121 Refrigerant inlet pipe 122 Refrigerant outlet pipe 21 Stator core 231 First coil (U-phase refrigerant inlet coil)
232 second coil (V-phase refrigerant inlet coil)
233 third coil (W-phase refrigerant inlet coil)
234 fourth coil (U-phase refrigerant outlet coil)
235 fifth coil (V-phase refrigerant outlet coil)
236 6th coil (W-phase refrigerant outlet coil)
2307 7th coil 2308 8th coil 2309 9th coil 2310 10th coil (U-phase refrigerant outlet coil)
2311 Eleventh coil (V-phase refrigerant outlet coil)
2312 12th coil (W-phase refrigerant outlet coil)
5 Circulation Pump 6 Heat Radiator 61 Radiator 62 Cooling Fan 7 Controller

Claims (22)

a conductive refrigerant inlet pipe into which the refrigerant flows from the tip side;
a U-phase refrigerant inlet coil that is connected to the refrigerant inlet pipe and formed by winding a hollow conductor through which the refrigerant that has flowed through the refrigerant inlet pipe is wound;
a U-phase refrigerant outlet coil formed by winding a hollow conductor through which the refrigerant that has flowed through the U-phase refrigerant inlet coil is wound;
a V-phase refrigerant inlet coil that is connected to the refrigerant inlet pipe and formed by winding a hollow conductor through which the refrigerant that has flowed through the refrigerant inlet pipe is wound;
a V-phase refrigerant outlet coil formed by winding a hollow conductor through which the refrigerant that has flowed through the V-phase refrigerant inlet coil is wound;
a W-phase refrigerant inlet coil that is connected to the refrigerant inlet pipe and formed by winding a hollow conductor through which the refrigerant that has flowed through the refrigerant inlet pipe is wound;
a W-phase refrigerant outlet coil formed by winding a hollow conductor through which the refrigerant that has flowed through the W-phase refrigerant inlet coil is wound;
Connected to the U-phase refrigerant outlet coil, the V-phase refrigerant outlet coil and the W-phase refrigerant outlet coil, the refrigerant that has flowed through the U-phase refrigerant outlet coil, the refrigerant that has flowed through the V-phase refrigerant outlet coil, and the W-phase refrigerant outlet coil A conductive refrigerant outlet pipe through which the flowing refrigerant flows and flows out to the tip side;
a connecting wire that electrically connects the refrigerant inlet pipe and the refrigerant outlet pipe;
a U-phase line connected between the U-phase refrigerant inlet coil and the U-phase refrigerant outlet coil;
a V-phase line connected between the V-phase refrigerant inlet coil and the V-phase refrigerant outlet coil;
a W-phase line connected between the W-phase refrigerant inlet coil and the W-phase refrigerant outlet coil;
An electrical energy mechanical energy converter having a The electrical energy mechanical energy converter of claim 1, wherein
The V-phase refrigerant inlet coil is arranged next to the U-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase refrigerant inlet coil,
The U-phase refrigerant outlet coil is arranged next to the W-phase refrigerant inlet coil,
The V-phase refrigerant outlet coil is arranged next to the U-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the V-phase refrigerant outlet coil,
Furthermore, the U-phase refrigerant inlet coil, the V-phase refrigerant inlet coil, the W-phase refrigerant inlet coil, the U-phase refrigerant outlet coil, the V-phase refrigerant outlet coil, and the W-phase refrigerant outlet coil are arranged in a circle. placed in the
electrical energy mechanical energy converter. The electrical energy mechanical energy converter of claim 1, wherein
The U-phase refrigerant outlet coil is arranged next to the U-phase refrigerant inlet coil,
The V-phase refrigerant inlet coil is arranged next to the U-phase refrigerant outlet coil,
The V-phase refrigerant outlet coil is arranged next to the V-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the W-phase refrigerant inlet coil,
Furthermore, the U-phase refrigerant inlet coil, the U-phase refrigerant outlet coil, the V-phase refrigerant inlet coil, the V-phase refrigerant outlet coil, the W-phase refrigerant inlet coil, and the W-phase refrigerant outlet coil are arranged in a circle. placed in the
electrical energy mechanical energy converter. The electrical energy mechanical energy converter of claim 1, wherein
The V-phase refrigerant inlet coil is arranged next to the U-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase refrigerant inlet coil,
The U-phase refrigerant outlet coil is arranged next to the W-phase refrigerant inlet coil,
The V-phase refrigerant outlet coil is arranged next to the U-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the V-phase refrigerant outlet coil,
Further, the U-phase refrigerant inlet coil, the V-phase refrigerant inlet coil, the W-phase refrigerant inlet coil, the U-phase refrigerant outlet coil, the V-phase refrigerant outlet coil, and the W-phase refrigerant outlet coil are arranged linearly. placed in the
electrical energy mechanical energy converter. An electrical energy mechanical energy converter according to any one of claims 1 to 4,
the electrical distance from the U-phase line to the U-phase refrigerant inlet coil and the electrical distance from the U-phase line to the U-phase refrigerant outlet coil are equal or substantially equal,
the electrical distance from the V-phase line to the V-phase refrigerant inlet coil and the electrical distance from the V-phase line to the V-phase refrigerant outlet coil are equal or substantially equal,
the electrical distance from the W-phase line to the W-phase refrigerant inlet coil and the electrical distance from the W-phase line to the W-phase refrigerant outlet coil are equal or substantially equal;
electrical energy mechanical energy converter. The electrical energy mechanical energy converter of claim 1, wherein
a U-phase upstream coil formed by winding a hollow conductor through which the coolant that has flowed through the U-phase coolant inlet coil is wound;
a U-phase downstream coil formed by winding a hollow conductor through which the coolant that has flowed through the U-phase upstream coil is wound;
a V-phase upstream coil formed by winding a hollow conductor through which the coolant that has flowed through the V-phase coolant inlet coil is wound;
a V-phase downstream coil formed by winding a hollow conductor through which the coolant that has flowed through the V-phase upstream coil is wound;
a W-phase upstream coil formed by winding a hollow conductor through which the coolant that has flowed through the W-phase coolant inlet coil is wound;
a W-phase downstream coil formed by winding a hollow conductor through which the coolant that has flowed through the W-phase upstream coil is wound;
has
Refrigerant that has flowed through the U-phase refrigerant inlet coil, the U-phase upstream coil, and the U-phase downstream coil flows through the hollow conductor of the U-phase refrigerant outlet coil,
Refrigerant that has flowed through the V-phase refrigerant inlet coil, the V-phase upstream coil, and the V-phase downstream coil flows through the hollow conductor of the V-phase refrigerant outlet coil,
Refrigerant that has flowed through the W-phase refrigerant inlet coil, the W-phase upstream coil, and the W-phase downstream coil flows through the hollow conductor of the W-phase refrigerant outlet coil,
electrical energy mechanical energy converter. In the electrical energy mechanical energy converter of claim 6,
The V-phase refrigerant inlet coil is arranged next to the U-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase refrigerant inlet coil,
The U-phase upstream coil is arranged next to the W-phase refrigerant inlet coil,
The V-phase upstream coil is arranged next to the U-phase upstream coil,
The W-phase upstream coil is arranged next to the V-phase upstream coil,
The U-phase downstream coil is arranged next to the W-phase upstream coil,
The V-phase downstream coil is arranged next to the U-phase downstream coil,
The W-phase downstream coil is arranged next to the V-phase downstream coil,
The U-phase refrigerant outlet coil is arranged next to the W-phase downstream coil,
The V-phase refrigerant outlet coil is arranged next to the U-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the V-phase refrigerant outlet coil,
Furthermore, the U-phase refrigerant inlet coil, the V-phase refrigerant inlet coil, the W-phase refrigerant inlet coil, the U-phase upstream coil, the V-phase upstream coil, the W-phase upstream coil, and the U-phase downstream coil , the V-phase downstream coil, the W-phase downstream coil, the U-phase refrigerant outlet coil, the V-phase refrigerant outlet coil, and the W-phase refrigerant outlet coil are arranged in a circle;
electrical energy mechanical energy converter. In the electrical energy mechanical energy converter of claim 6,
The U-phase upstream coil is arranged next to the U-phase refrigerant inlet coil,
The V-phase refrigerant inlet coil is arranged next to the U-phase upstream coil,
The V-phase upstream coil is arranged next to the V-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase upstream coil,
The W-phase upstream coil is arranged next to the W-phase refrigerant inlet coil,
The U-phase downstream coil is arranged next to the W-phase upstream coil,
The U-phase refrigerant outlet coil is arranged next to the U-phase downstream coil,
The V-phase downstream coil is arranged next to the U-phase refrigerant outlet coil,
The V-phase refrigerant outlet coil is arranged next to the V-phase downstream coil,
The W-phase downstream coil is arranged next to the V-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the W-phase downstream coil,
Furthermore, the U-phase refrigerant inlet coil, the U-phase upstream coil, the V-phase refrigerant inlet coil, the V-phase upstream coil, the W-phase refrigerant inlet coil, the W-phase upstream coil, and the U-phase downstream coil , the U-phase refrigerant outlet coil, the V-phase downstream coil, the V-phase refrigerant outlet coil, the W-phase downstream coil, and the W-phase refrigerant outlet coil are arranged in a circle;
electrical energy mechanical energy converter. In the electrical energy mechanical energy converter of claim 6,
The V-phase refrigerant inlet coil is arranged next to the U-phase refrigerant inlet coil,
The W-phase refrigerant inlet coil is arranged next to the V-phase refrigerant inlet coil,
The U-phase upstream coil is arranged next to the W-phase refrigerant inlet coil,
The V-phase upstream coil is arranged next to the U-phase upstream coil,
The W-phase upstream coil is arranged next to the V-phase upstream coil,
The U-phase downstream coil is arranged next to the W-phase upstream coil,
The V-phase downstream coil is arranged next to the U-phase downstream coil,
The W-phase downstream coil is arranged next to the V-phase downstream coil,
The U-phase refrigerant outlet coil is arranged next to the W-phase downstream coil,
The V-phase refrigerant outlet coil is arranged next to the U-phase refrigerant outlet coil,
The W-phase refrigerant outlet coil is arranged next to the V-phase refrigerant outlet coil,
Furthermore, the U-phase refrigerant inlet coil, the V-phase refrigerant inlet coil, the W-phase refrigerant inlet coil, the U-phase upstream coil, the V-phase upstream coil, the W-phase upstream coil, and the U-phase downstream coil , the V-phase downstream coil, the W-phase downstream coil, the U-phase refrigerant outlet coil, the V-phase refrigerant outlet coil, and the W-phase refrigerant outlet coil are arranged in a straight line;
electrical energy mechanical energy converter. An electrical energy mechanical energy converter according to any one of claims 6 to 9,
the electrical distance from the U-phase line to the U-phase refrigerant inlet coil and the electrical distance from the U-phase line to the U-phase refrigerant outlet coil are equal or substantially equal,
the electrical distance from the V-phase line to the V-phase refrigerant inlet coil and the electrical distance from the V-phase line to the V-phase refrigerant outlet coil are equal or substantially equal,
the electrical distance from the W-phase line to the W-phase refrigerant inlet coil and the electrical distance from the W-phase line to the W-phase refrigerant outlet coil are equal or substantially equal,
the electrical distance from the U-phase wire to the U-phase upstream coil and the electrical distance from the U-phase wire to the U-phase downstream coil are equal or substantially equal,
the electrical distance from the V-phase wire to the V-phase upstream coil and the electrical distance from the V-phase wire to the V-phase downstream coil are equal or substantially equal,
the electrical distance from the W-phase wire to the W-phase upstream coil and the electrical distance from the W-phase wire to the W-phase downstream coil are equal or substantially equal;
electrical energy mechanical energy converter. an electrical energy mechanical energy converter according to any one of claims 1 to 4 and claims 6 to 9;
a radiator into which the refrigerant flowing out from the refrigerant outlet pipe flows, and a fan that blows air to the radiator, and a heat radiating unit that promotes heat dissipation of the refrigerant;
a circulation pump into which the refrigerant flowing out from the radiator flows, discharges the refrigerant, and sends the refrigerant to the refrigerant inlet pipe;
a controller that controls operation of at least one of the fan and the circulation pump;
An electrical energy mechanical energy converter system comprising: The electrical energy mechanical energy converter system of claim 11, wherein
The controller increases the discharge amount of the circulation pump as the output required for the electrical energy mechanical energy converter is greater.
Electrical energy mechanical energy converter system. The electrical energy mechanical energy converter system of claim 11, wherein
The controller increases the discharge amount of the circulation pump as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
Electrical energy mechanical energy converter system. The electrical energy mechanical energy converter system of claim 11, wherein
The controller increases the discharge amount of the circulation pump as the temperature of the refrigerant discharged from the electric energy mechanical energy converter increases, and the controller increases the discharge amount of the circulation pump based on the output required for the electric energy mechanical energy converter. Correcting the discharge amount,
Electrical energy mechanical energy converter system. The electrical energy mechanical energy converter system of claim 11, wherein
The controller increases the blowing volume of the fan as the output required for the electrical energy mechanical energy converter is greater.
Electrical energy mechanical energy converter system. The electrical energy mechanical energy converter system of claim 11, wherein
The controller increases the blowing volume of the fan as the temperature of the refrigerant output from the electrical energy mechanical energy converter is higher.
Electrical energy mechanical energy converter system. an electrical energy mechanical energy converter according to any one of claims 1 to 4 and claims 6 to 9;
a heat exchanger through which the refrigerant flows and another heat exchanger set;
a radiator into which the refrigerant flowing out from the another heat exchanger flows;
a fan that blows air to the radiator;
a circulation pump into which the refrigerant flowing out from the heat exchanger flows, discharges the refrigerant, and sends the refrigerant to the refrigerant inlet pipe;
a controller that controls operation of at least one of the fan and the circulation pump;
An electrical energy mechanical energy converter system comprising: 18. The electrical energy mechanical energy converter system of claim 17, wherein
The controller increases the discharge amount of the circulation pump as the output required for the electrical energy mechanical energy converter is greater.
Electrical energy mechanical energy converter system. 18. The electrical energy mechanical energy converter system of claim 17, wherein
The controller increases the discharge amount of the circulation pump as the temperature of the refrigerant discharged from the electrical energy mechanical energy converter is higher.
Electrical energy mechanical energy converter system. 18. The electrical energy mechanical energy converter system of claim 17, wherein
The controller increases the discharge amount of the circulation pump as the temperature of the refrigerant discharged from the electric energy mechanical energy converter increases, and the controller increases the discharge amount of the circulation pump based on the output required for the electric energy mechanical energy converter. Correcting the discharge amount,
Electrical energy mechanical energy converter system. 18. The electrical energy mechanical energy converter system of claim 17, wherein
The controller increases the blowing volume of the fan as the output required for the electrical energy mechanical energy converter is greater.
Electrical energy mechanical energy converter system. 18. The electrical energy mechanical energy converter system of claim 17, wherein
The controller increases the blowing volume of the fan as the temperature of the refrigerant output from the electrical energy mechanical energy converter is higher.
Electrical energy mechanical energy converter system.

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