WO2008156127A1 - 回転電機の冷却構造 - Google Patents
回転電機の冷却構造 Download PDFInfo
- Publication number
- WO2008156127A1 WO2008156127A1 PCT/JP2008/061188 JP2008061188W WO2008156127A1 WO 2008156127 A1 WO2008156127 A1 WO 2008156127A1 JP 2008061188 W JP2008061188 W JP 2008061188W WO 2008156127 A1 WO2008156127 A1 WO 2008156127A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- motor generator
- cooling water
- coil
- cooling structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the present invention relates to a structure of a rotating electrical machine mounted on a vehicle, and more particularly to a cooling structure for a rotating electrical machine including an edgewise coil formed using a rectangular wire.
- an edgewise coil is formed by using a flat wire as a winding of the stator (stator) of such a rotating electric machine.
- the coil cross-sectional area is increased compared to a normal round wire, and it is possible to achieve downsizing and high performance by reducing DC resistance and improving frequency patentability.
- the flat wire has a large radius of curvature when it is bent, and tends to have a large gap between the stator of the rotating electrical machine (iron core). That is, when such a rectangular wire is wound around the winding section of the rectangular cross section of the insulating member covering the iron core, it is difficult to wind the conducting wire into an accurate quadrilateral, and the conducting wire contacts only the vertex of the square. As a result, it was inevitable that the surface would rise from the straight line and a gap would occur.
- the gap functions as a heat insulating space, it is difficult for the heat of the conducting wire to be transmitted to the iron core through the insulating member, and even if the iron core is cooled, the cooling performance of the conducting wire is further deteriorated.
- Patent Document 1 Japanese Patent Laid-Open No. 2000-043 487 7 (Patent Document 1) describes a rotating machine that can efficiently cool a coil wire of a rotating electrical machine with a simple structure. Disclose the electric coil.
- This coil of a rotating electrical machine is a rotating electrical machine coil in which conductive wires are wound in multiple layers on a wound portion of an insulating member covering the periphery of an iron core, and between the wound portion of the insulating material and the conductive wire.
- the formed gap is filled with a thermally conductive member through a channel formed in the insulating member. Characterized by filling.
- the thermal conductivity through the flow path formed in the insulation member in the gap formed between the winding part of the insulating member covering the periphery of the iron core and the conducting wire wound there. Since the member is filled, the heat of the conductor is transferred to the iron core through the heat conductive member and the insulating member, so that the heat can be effectively dissipated and the conductor can be cooled. In addition, it eliminates the need for refrigeration and a pump that circulates it, which can contribute to cost reduction. Disclosure of the invention
- the coil of the rotating electrical machine disclosed in Patent Document 1 described above does not actively cool the coil itself, but indirectly transmits the coil (conductive wire) to the iron core more and cools it indirectly. Only. This may not be enough to cool the flat wire.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cooling structure for a rotating electrical machine that can efficiently cool a rotating electrical machine having an edgewise coil using a rectangular wire. Is to provide.
- the cooling structure for a rotating electrical machine is a structure for cooling a rotating electrical machine having a plurality of coils in which rectangular wires are wound in a plurality of layers on an insulating member covering the periphery of an iron core.
- This cooling structure is provided for supplying a cooling medium that is circulated in the gap between the insulating member and the rectangular wire, which is formed by a large curvature radius of the winding of the rectangular wire in each coil.
- Supply means means.
- a plurality of coils are formed according to the number of poles of the rotating electrical machine, and the coils are formed by winding a flat wire in a plurality of layers on an insulating forest covering the periphery of the iron core.
- Curvature of the winding of a rectangular wire is to attach a flat wire to an insulating material covering the periphery of a square iron core without any gap. This is difficult because the radius is large, and a gap is inevitably formed between the insulating member and the flat wire.
- the supply means supplies a cooling medium to the gap, and this gap becomes a passage for the cooling medium.
- the cooling medium is supplied to the gap, so it is directly The iron core can be cooled.
- a cooling structure for a rotating electrical machine that can efficiently cool a rotating electrical machine equipped with a flat wire (edgewise) coil.
- a cooling medium flows from one coil to another coil.
- the cooling liquid is supplied to the uppermost stator coil, and the cooling medium is circulated to the other coil that comes into contact with the next due to gravity. . Since this is done in a chain, multiple coils can be cooled.
- the cooling structure for a rotating electrical machine according to the third invention additionally includes an insulating material that reduces the cross-sectional area of the gap.
- the cross-sectional area of the gap is reduced, the flow rate of the cooling medium (here, liquid) is increased. For this reason, the aging exchange is further promoted, so that the cooling efficiency is improved.
- the supply means includes a pipe for supplying a cooling medium to the hole communicating with the gap, and a pipe And a pump for circulating a cooling medium in the passage.
- the cooling liquid is supplied to the gap between the coils of the rotating electrical machine by the pump, or the absorbed heat is supplied to the radiator (radiator) to efficiently cool the rotating electrical machine.
- FIG. 1 is a control block diagram of the entire hybrid vehicle including the motor generator according to the embodiment of the present invention.
- FIG. 2 is a diagram showing a power split mechanism.
- Fig. 3 shows the overall configuration of a hybrid vehicle cooling system.
- FIG. 4 is a cross-sectional view of the motor generator according to the embodiment of the present invention.
- FIG. 5 is a perspective view of the motor generator according to the embodiment of the present invention.
- FIG. 6 is a partially enlarged view corresponding to FIG.
- FIG. 7 is a cross-sectional view corresponding to FIG.
- FIG. 8 is a side view of the motor generator (with a cooling pipe) according to the embodiment of the present invention.
- FIG. 9 is a perspective view of a motor generator provided with a cooling pipe corresponding to FIG. .
- FIG. 10A is a diagram (part 1) illustrating how the cooling water flows, and is a diagram of the stator coil ends 1 2 0 1 0 as viewed from above the motor generator 1 40.
- FIG. 10B is a cross-sectional view taken along the line XB-XB in FIG. 1OA.
- FIG. 11A is a diagram (part 2) illustrating how the cooling water flows, and is a diagram of the stator coil end 1 2 0 1 0 as viewed from above the motor generator 1 40.
- FIG. 11B is a cross-sectional view taken along line XIB-XIB in FIG. 11A. .
- FIG. 12 is a partial cross-sectional perspective view of a motor generator according to a modification of the embodiment of the present invention.
- the present invention is not limited to the hybrid vehicle shown in FIG.
- the present invention is a drive source for driving an internal combustion engine such as a gasoline engine (hereinafter referred to as an engine) as a power source, and may be a generator drive source.
- an engine such as a gasoline engine (hereinafter referred to as an engine)
- a generator drive source such as a generator drive source.
- any vehicle can be used as long as the drive source is an engine and a motor generator and the vehicle can be driven by the power of the generator (whether the engine is stopped or not stopped).
- a hybrid vehicle having other aspects mounted It is not limited to so-called series-type or parallel-type hybrid vehicles, but is limited to vehicles that can run EV after the system is started).
- This battery is a nickel metal hydride battery or a lithium ion battery, and the type thereof is not particularly limited. A capacitor may be used instead of the battery. Furthermore, the motor generator provided with the cooling structure according to the embodiment of the present invention can be applied to an electric vehicle having no engine.
- the hybrid vehicle includes an engine 120 and a motor generator (MG) 140.
- the motor generator 140 is expressed as a motor generator 14 OA (or MG (2) 14 OA) and a motor generator 140 B (or (1) 140B).
- motor generator 14 OA functions as a generator
- motor generator 140 B functions as a motor. Regenerative braking is performed when this motor generator functions as a generator.
- the motor generator functions as a generator, the kinetic energy of the vehicle is converted into electric energy, and the vehicle is decelerated.
- the hybrid vehicle transmits the power generated by the engine 120 and the motor generator 140 to the drive wheels 160, and the reduction gear 180 that transmits the drive of the drive wheels 160 to the engine 120 and the motor generator 140.
- a power split mechanism for example, a planetary tooth rate mechanism to be described later
- MG (1) 140 B MG (1) 140 B
- the battery 220 for driving that charges the electric power for driving the motor generator 140, the direct current of the battery 220 for driving and the motor generator 140 A (MG (2) 1 OA) and the motor generator 140 B (MG (1) 14 OB) )
- the battery control unit (hereinafter referred to as the battery ECU (Electronic Control)) that manages and controls the charge / discharge state (eg, SOC) of the battery 120 for driving. ol Unit) 260), an engine ECU 280 for controlling the operating state of the engine 120, an MG—ECU 300 for controlling the monitor generator 140, the battery ECU 260, the inverter 240, etc. according to the state of the hybrid vehicle, Battery ECU260, Yen Jin ECU 280 and MG—Includes the HV-ECU320, which controls and controls the hybrid system so that the hybrid vehicle can operate most efficiently by mutually managing and controlling it.
- a boost converter 242 is provided between the running battery 220 and the inverter 240. This is because the rated voltage of the running battery 220 is motor 14 OA (MG (2) 14 OA) or motor generator 140 B
- the boost converter 242 boosts the power.
- each ECU is configured separately, but may be configured as an ECU in which two or more ECUs are integrated (for example, as shown by the dotted line in FIG. 1, MG-ECU300 and HV— An example is an ECU that integrates CU 320).
- the power split mechanism 200 uses a planetary gear mechanism (a planetary gear) to distribute the power of the engine 120 to both the drive wheel 160 and the motor generator 14 OB (MG (1) 140B).
- Motor generator 14 OB (G) G
- the power split mechanism 200 also functions as a continuously variable transmission.
- the rotational force of the engine 120 is input to the carrier (C), which is input to the motor generator 140 B (MG (1) 140 B) by the sun gear (S), and the motor generator 14 OA (MG (2) 1 by the ring gear (R). 4 OA) and output shaft (drive wheel 160 side).
- the motor energy 140 B MG (1) 140 B
- the motor energy 140 B is used to convert this rotational motion energy into the electric engine energy. Reduce the number of revolutions.
- the HV—ECU 320 is connected to the motor generator 140 OA (MG (2) 14 OA ) Motor generator so that the hybrid vehicle travels only by 1 4 Engine 120 is controlled via OA (MG (2) 14 OA) and engine E CU 280.
- the predetermined condition is a condition that the SOC of the traveling battery 220 is equal to or greater than a predetermined value.
- the hybrid vehicle can be driven only by the motor generator 14 OA (MG (2) 140 A) when the engine 120 is inefficient at the time of starting or running at a low speed.
- the SOC of the traveling battery 220 can be lowered (the traveling battery 220 can be charged when the vehicle is subsequently stopped).
- the power splitting mechanism 200 divides the power of the engine 120 into two paths, while the drive wheels 160 are directly driven on the one hand, and the motor generator 14 OB (MG (1) 140B) is driven on the other hand. Generate electricity.
- the motor generator 14 OA (MG (2) 14 OA) is driven by the generated electric power to assist driving of the driving wheels 160.
- power from the running battery 220 is further supplied to the motor generator 14 OA (MG (2) 10 A) to increase the output of the motor generator 14 OA (MG (2) 14 OA). The driving force is added to the driving wheel 160.
- motor generator 14 OA (MG (2) 14 OA) driven by driving wheel 160 functions as a generator and performs regenerative power generation, and the collected electric power is stored in traveling battery 220.
- the output of the engine 120 is increased to increase the amount of electricity generated by the motor generator 140 B (MG (1) 140B). Increase charge for 220.
- the target SOC of the traveling battery 220 is normally set to about 60% so that energy can be recovered whenever regeneration is performed.
- the upper limit and lower limit values of SOC are set, for example, with the upper limit value set to 80% and the lower limit value set to 30% in order to suppress deterioration of the battery of the running battery 220.
- MG Controls power generation, regeneration, and motor output by the motor generator 140 so that the SOC does not exceed the upper and lower limits via the ECU300.
- the values listed here are only examples and are not particularly limited values. ' The power split mechanism 200 will be further described with reference to FIG.
- the power split mechanism 200 includes a sun gear (S) 202 (hereinafter simply referred to as sun gear 202), a pinion gear 204, a carrier (C) 206 (hereinafter simply referred to as carrier 206), and a ring gear (R) 208. (Hereinafter simply referred to as ring gear 208).
- S sun gear
- C carrier
- R ring gear
- Pinion gear 204 engages with sun gear 202 and ring gear 208.
- the carrier 206 supports the pinion gear 204 so that it can rotate.
- Sun gear 202 is connected to the rotating shaft of MG (1) 140 B.
- Carrier 206 is coupled to the engine 120 crankshaft.
- Ring gear 208 is coupled to MG (2) 1 4 OA rotary shaft reducer 180.
- Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG (1) 140B and MG (2) 14 OA are connected via power split mechanism 200 consisting of planetary gears., Engine 120, MG
- this hybrid cooling system (hereinafter sometimes simply referred to as a cooling system) uses cooling water (LLC (Long Life Coolant) as a cooling medium) as liquid refrigerant and HV With the single pump 2310, the motor generator
- This system circulates between 140 and PCU2200 and HV radiator 2330 to cool motor generator 140 and PCU2200.
- this cooling system includes the HV radiator one-way piping 2320, which is a pipe for sending the high-temperature cooling water absorbed by the motor generator 140 and the PCU 2200 to the HV radiator 2330.
- HV radiator return pipe 2340 and reservoir tank 2300 are included, which are pipes that return cooling water from the HV radiator 2330 that has undergone heat exchange in the HV radiator 2330 to lower the water temperature.
- the reservoir tank 2300 functions as a reserve tank for cooling water.
- the temperature of the cooling water in the piping of this cooling system and the cooling by circulating the cooling water It is provided to cope with changes in the volume of the pipe. Furthermore, specifically, when the capacity of the cooling water is insufficient with respect to the volume of the cooling pipe in the absence of the reservoir tank 2 3 1 0, air stagnates into the cooling pipe. In such a case, the air enters the piping of this cooling system, and this air enters the HV water pump 2 3 1 0, causing the HV water pump 2 3 1 0 to be air-locked. It becomes impossible to circulate water. In order to avoid such a situation, a reservoir tank 2 3 1 0 is provided.
- the cooling water is HV radiator 2 3 3 0, PCU 2 2 0 O reservoir tank 2 3 0 0, HV water pump 2 3 1 0, motor generator 1 4 0 in this order. Circulated. Since PCU 2 2 0 0 stores IPM for driving motor generator 1 4 0, it is provided in the vicinity of motor generator 1 4 0 as shown in FIG. As a result, when this vehicle is equipped with the engine 120 at the front, the motor generator 140 and PCU 220 are provided near the engine: I 20.
- the positions of motor generator 14 0 and PC 2 2 0 0 are not limited to such positions.
- the cooling system is a force S described as being a cooling system of a system different from the cooling system of the engine 120, and the cooling system controlled by the control device according to the present invention is limited to such a system. Is not to be done. 'That is, even if the cooling system shared with the engine 120 cooling system is used, the piping is provided separately and the radiator is shared (that is, the engine 120 radiator and the HV radiator are shared). Even if it is, it may be in other shared forms (only sharing the radiator's clean fan, etc.).
- FIG. 4 the internal structure of motor generator 140 having the cooling structure according to the embodiment of the present invention will be described. As shown in Fig. 4, the high-prid vehicle is mounted with the rotating shaft in a horizontal or almost horizontal state.
- FIG. 4 shows a cross-sectional view of such a motor generator 140.
- This motor includes a rotor portion including a rotor 1 1 0 1 0 that is rotatably supported by two bearings 1.1.20, and a stator core 1 2 0 0 0 installed in the outer circumferential direction of the rotor 1 1 0 1 0. And a stator portion including This rotor 1 1 0 1 0 is 1, and is rotated about the rotating shaft 11000 to transmit the rotating torque to the vehicle power train (the power split mechanism 200 described above).
- a stator core 12000 is provided at a position corresponding to the rotor 11010 through a slight gap.
- a coil is attached to a slit provided so as to penetrate the stator core 12000 in a direction parallel to the rotation axis. An electric current is passed through this coil to generate a magnetic field for rotating the rotor 1101 through the stator core 12000.
- stator coil end 12010 the end portion of the stator coil attached to the stator core 12000 is formed as a stator coil end 12010.
- the stator coil is wound with an insulating paper 12021 provided in a slot of the stator core 12000. Teeth are formed between the slots.
- the rotor 11010 may be configured by laminating a large number of electromagnetic steel plates (thin plates of about 0.3 mn! To 0.5 mm), or may be an integral one.
- the rotating shaft 11000, the mouthpiece 11010, the benaling 11020, the stator core 12000, and the stator coil end 12010, which are these components, are housed in the housing 13000.
- a stator coil 12040 wound around the stator core 12000 shown in FIG. 4 uses an oblong wire to form an edgewise coil. This rectangular wire has a larger radius of curvature when it is bent (turned part) than the round wire.
- the main feature of the cooling mechanism according to the present embodiment is that this gap is used as a passage for the cooling medium (cooling water, cooling oil).
- FIG. 5 shows a perspective view of motor generator 140 provided with the cooling structure according to the embodiment of the present invention.
- the insulating plate (insulator) covering the stator coil end 12010 is provided with a reject water insertion hole 12011 connected to this gap. Note that the state of the stator coil end 12010 differs depending on the number of poles of the motor generator 140 and the like, but in this embodiment, two holes are provided as one set and are provided on one insulating plate.
- Fig. 6 shows an enlarged view of the part including the edgewise coil corresponding to one pole
- Fig. 7 shows Sectional views corresponding to Fig. 6 are shown.
- a rectangular wire 1 2 0 5 0 is attached to teeth 1 2 0 1 8 to form an edgewise coil.
- FIG. 7 it has a support portion 1 2 0 1 3 for determining the relative position of the edgewise coil with respect to the teeth 1 2 0 1 8. Therefore, the cooling water passage 1 2 between the edgewise coil formed by the rectangular wire 1 2 0 5 0 and the tooth 1 2 0 1 8 (to be precise, the insulation material (the insulator is interposed between them)) 0 1 2 is formed.
- the position of the cooling water inlet 1 2 0 1 1 shown in FIG. 6 corresponds to the position of the cooling water passage 1 2 0 1 2 shown in FIG. For this reason, by supplying cooling water (LLC) 'toward the cooling water insertion hole 1 2 0 1 1 (from the outside of the motor generator 1 4 0 toward the rotating shaft (inside, center side)) Cooling water can flow through the passage 1 2 0 1 2. For this reason, the edgewise coil can be directly cooled with cooling water.
- LLC cooling water
- FIG. 8 and FIG. 9 the supply of cooling water in the motor generator 140 will be described.
- the cooling water insertion holes 1 2 0 1 1 shown in FIG. 5 are provided on the entire circumference of the stator cord 1 2 0 1 0 portion of the motor generator 1 4 0. . All around this! :
- a cooling water supply pipe 1 2 0 1 4 is provided on the entire circumference of the stator coil end 1 2 0 10 1 so as to cover the provided cooling water insertion hole 1 2 0 1 1.
- the cooling water supply pipe 1 2 0 1 4 is provided with a spout corresponding to the position of the cooling water insertion hole 1 2 0 1 1. As shown by the arrows in FIG.
- the cooling water ejected from the ejection port flows into the cooling water passage 1 2 0 1 2 through the cooling water insertion hole 1 2 0 1 1. Since the cooling water flows from the upper side to the lower side of the motor generator 140 due to the gravity, the jet outlet may be provided only on the upper side of the cooling water supply pipe 12020.
- this hybrid cooling system uses the HV water pump 2.310 to circulate cooling water and absorbs the heat absorbed by the motor generator 140. 3 ⁇ 4 out at 2 3 3 0. Therefore, the coolant passage opened from the outside to the center of the motor generator 140 shown in FIG.
- the cooling ⁇ passed through 12012 is sent to the HV radiator 2330 from an outlet (not shown) provided below the motor generator 140 through the HV radiator piping 2320.
- FIG. 10A is a view of the stator coil end 12010 as viewed from above the motor generator 140, and shows a coolant insertion hole 12011 provided in the insulating plate.
- Fig. 10B shows the XB-XB cross section of Fig. 1 OA. As shown in Fig. The cooling water that flows into 20030 exchanges heat with the stator coil, and lowers the temperature of the stator coil.
- FIG. 11A is a view of the stator coil end 12010 as viewed from above the motor generator 140, similar to FIG. 10A, and shows a cooling water insertion hole 12011 provided in the insulating plate.
- Fig. 11B is a cross-sectional view taken along the line XIB-XIB in Fig. 11A.
- This edgewise coil 22015 (stator coil end 12010) is shorter than insulator 12017, which insulator 22017 shows in FIG. 1 OA and 10B.
- the cooling water that has flowed into the cooling water passage 30000 from one of the two cooling water insertion holes 12011 in two sets flows into the cooling water passage 30010 that communicates with the other cooling water insertion hole 12011.
- the cooling water discharged from the cooling water passage 30010 flows into the cooling water passage 30020 from one cooling water insertion hole 1 2011 of the other lower edgewise coil, and communicates with the other cooling water insertion hole 12011. It flows into the cooling water passage 30030. Further, the cooling water discharged from the cooling water passage 30010 flows to another lower edgewise coil.
- Cooling water passages formed in the insulator 22016 and the insulator 22017, etc. The cooling water that has flowed into the 30000, 30010, 30020, and 30030 in order Heat is exchanged with the data coil to lower the stator coil temperature.
- the curvature radius is large. Cooling water was allowed to flow in the gap that would be formed. As a result, the stator coil can be actively cooled, and the thermal characteristics of the motor generator can be improved.
- Figure 12 corresponds to Figure 7 (although in different directions). Unlike the cooling structure shown in Fig. 7, instead of the support 4 0 0 1 0, an insulator I 4 0 0 0 2 is added to the insulator 4 0 0 0 0 and supported on the top Part 4 0 0 1 0 is formed.
- a cooling water passage 4 0 0 30 which is narrower than the cooling water passage 1 2 0 1 2 is formed.
- a rectangular wire 4 0 0 2 0 is arranged so as to surround the cooling water passage 4 0 0 30.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008800200886A CN101689786B (zh) | 2007-06-13 | 2008-06-12 | 旋转电机的冷却构造 |
| JP2009520523A JP4888558B2 (ja) | 2007-06-13 | 2008-06-12 | 回転電機の冷却構造 |
| DE112008001594.5T DE112008001594B4 (de) | 2007-06-13 | 2008-06-12 | Kühlstruktur für eine elektrische Rotationsmaschine |
| US12/663,365 US8093769B2 (en) | 2007-06-13 | 2008-06-12 | Cooling structure for rotating electric machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-156352 | 2007-06-13 | ||
| JP2007156352 | 2007-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008156127A1 true WO2008156127A1 (ja) | 2008-12-24 |
Family
ID=40156285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2008/061188 Ceased WO2008156127A1 (ja) | 2007-06-13 | 2008-06-12 | 回転電機の冷却構造 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8093769B2 (ja) |
| JP (1) | JP4888558B2 (ja) |
| CN (1) | CN101689786B (ja) |
| DE (1) | DE112008001594B4 (ja) |
| WO (1) | WO2008156127A1 (ja) |
Cited By (8)
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| JP2009089456A (ja) * | 2007-09-27 | 2009-04-23 | Toyota Motor Corp | 固定子構造 |
| JP2010206870A (ja) * | 2009-02-27 | 2010-09-16 | Toyota Motor Corp | 回転電機 |
| JP2011004472A (ja) * | 2009-06-16 | 2011-01-06 | Toyota Motor Corp | 回転電機 |
| WO2012133302A1 (ja) * | 2011-03-31 | 2012-10-04 | 株式会社小松製作所 | インシュレータおよびこれを備えたステータ、モータ |
| US20130220719A1 (en) * | 2011-02-23 | 2013-08-29 | Suzuki Motor Corporation | Cooling Device For Hybrid Vehicles |
| JP2014514902A (ja) * | 2011-04-01 | 2014-06-19 | ヴォッベン プロパティーズ ゲーエムベーハー | ポールシュー |
| JP5552688B2 (ja) * | 2011-01-28 | 2014-07-16 | トヨタ自動車株式会社 | モータの冷却装置 |
| EP2525475A4 (en) * | 2010-05-26 | 2016-10-12 | Toyota Motor Co Ltd | STATOR CONSTRUCTION AND METHOD FOR PRODUCING A STATOR |
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| ITBO20090573A1 (it) * | 2009-09-09 | 2011-03-10 | Ferrari Spa | Veicolo ibrido |
| CN101814783A (zh) * | 2010-04-16 | 2010-08-25 | 江苏王牌直流电机制造有限公司 | 定子多风道直流电动机 |
| FI124814B (fi) * | 2010-10-18 | 2015-01-30 | Lappeenrannan Teknillinen Yliopisto | Sähkökoneen staattori ja sähkökone |
| ES2523424B1 (es) * | 2013-05-22 | 2015-11-02 | Acciona Windpower, S.A. | Estator de generador eléctrico rotativo, generador eléctrico rotativo que comprende dicho estator y turbina eólica que incorpora dicho generador eléctrico rotativo |
| JP6279449B2 (ja) * | 2014-10-27 | 2018-02-14 | 株式会社神戸製鋼所 | アウターロータ型のアキシャルギャップ型ブラシレスモータ |
| US20160241093A1 (en) * | 2015-02-13 | 2016-08-18 | Hamilton Sundstrand Corporation | Lubricant channel on a stator winding support |
| JP6288002B2 (ja) | 2015-08-10 | 2018-03-07 | トヨタ自動車株式会社 | 回転電機ステータの製造方法及び回転電機用カセットコイル |
| KR102474505B1 (ko) * | 2016-12-15 | 2022-12-05 | 현대자동차주식회사 | 직접 냉각 방식의 차량용 구동 모터 |
| DE102017109486A1 (de) * | 2017-05-03 | 2018-11-08 | Schaeffler Technologies AG & Co. KG | Elektrische Maschine mit Kühlung |
| DE102020100618A1 (de) * | 2020-01-14 | 2021-07-15 | Schaeffler Technologies AG & Co. KG | Stator für einen Elektromotor |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2008156127A1 (ja) | 2010-08-26 |
| US20100218918A1 (en) | 2010-09-02 |
| US8093769B2 (en) | 2012-01-10 |
| CN101689786A (zh) | 2010-03-31 |
| CN101689786B (zh) | 2012-08-29 |
| JP4888558B2 (ja) | 2012-02-29 |
| DE112008001594B4 (de) | 2025-10-16 |
| DE112008001594T5 (de) | 2010-04-29 |
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