WO2016098646A1 - 車両用駆動装置 - Google Patents
車両用駆動装置 Download PDFInfo
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- WO2016098646A1 WO2016098646A1 PCT/JP2015/084435 JP2015084435W WO2016098646A1 WO 2016098646 A1 WO2016098646 A1 WO 2016098646A1 JP 2015084435 W JP2015084435 W JP 2015084435W WO 2016098646 A1 WO2016098646 A1 WO 2016098646A1
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- inverter
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- wall
- drive device
- vehicle drive
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- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/40—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 ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 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 assembly or relative disposition of components
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- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/904—Component specially adapted for hev
- Y10S903/906—Motor or generator
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/952—Housing details
Definitions
- the present invention relates to a rotating electrical machine that serves as a driving force source for wheels and a vehicle driving device that includes an inverter device that controls the rotating electrical machine.
- Patent Document 1 shows a transmission (transmission 10) suitable for a hybrid vehicle (for example, Fig. 1 and Fig. 2).
- This transmission includes a rotating electrical machine (motor / generator 56, 58) and an inverter (power inverter module 30) that drives the rotating electrical machine.
- the rotating electrical machine and the inverter are accommodated in an accommodation space formed by a casing (casing 12) and a lid (lid 36) joined to the casing.
- Openings are formed in the lid, and connection terminals (first junction 38, connection ⁇ ⁇ plug 88) electrically connected to the inverter are externally connected from these openings. Protruding. These connection terminals are connected to another device, such as a power supply device or a control device, arranged outside the transmission by a wiring member (first cable harness 50, wire harness 86).
- the flow path for supplying and discharging the refrigerant for cooling the inverter enters the housing space through the casing platform (platform 26) and is connected to the inverter in the housing space (for example, Fig. 4). reference).
- a structure in which the number of locations to be sealed is suppressed is desired.
- a vehicle drive device that includes a rotating electrical machine that serves as a driving force source of a wheel and an inverter device that controls the rotating electrical machine in a space surrounded by a case outer wall, A body case accommodating at least the rotating electrical machine; An inverter case joined to the body case; An inverter case cover joined to the inverter case, An inverter accommodating chamber for accommodating the inverter device is formed at least in a space surrounded by the inverter case, A connection terminal for electrically connecting the rotating electrical machine and the inverter device is disposed in the inverter accommodating chamber,
- the case outer wall is formed by a first outer wall forming portion that is an outer wall forming portion of the main body case, a second outer wall forming portion that is an outer wall forming portion of the inverter case, and the inverter case cover.
- a liquid refrigerant supply port and a discharge port for cooling the inverter device are formed in the second outer wall forming portion.
- the supply port and the discharge port for the liquid refrigerant are provided in the second outer wall forming portion.
- the supply port and the discharge port are directly connected to the inverter case that houses the inverter device to be cooled. Is formed. Therefore, the location where sealing is required is limited.
- the supply port and the discharge port enter the accommodation space through the platform (platform 26) of the casing, and are connected to the inverter device in the accommodation space. Therefore, there are many sealing places compared with this structure by the part which needs sealing at the boundary part of the external space and accommodation space of a casing at least.
- Block diagram showing a schematic configuration of a vehicle drive device Schematic circuit block diagram of the electrical system that drives the rotating electrical machine External perspective view of vehicle drive device Exploded perspective view of vehicle drive device Partial enlarged view of the VV cross section in FIG. Partial enlarged view of the VI-VI cross section in FIG. Schematic plan view of the vehicle drive device viewed from above
- a vehicle drive device 1 in a vehicle (hybrid vehicle) provided with both an internal combustion engine E and a rotating electrical machine MG as a drive force source for vehicle wheels.
- the vehicle drive device 1 is configured as a drive device for a so-called 1-motor parallel type hybrid vehicle.
- terms relating to the direction and position of each member are concepts including a state having a difference due to an error that can be allowed in manufacturing.
- the direction about each member represents the direction in the state in which they were assembled
- the internal combustion engine E is a heat engine that outputs power by explosive combustion of hydrocarbon fuels such as gasoline, light oil, ethanol, natural gas, and hydrogen.
- the rotating electrical machine MG is a rotating electrical machine (Motor / Generator) that operates with a plurality of phases of alternating current (for example, three-phase alternating current), and can function as both an electric motor and a generator. As will be described later with reference to FIG. 2, the rotating electrical machine MG is powered by receiving power from the high-voltage DC power supply BH, or generates power generated by the torque of the internal combustion engine E or the inertial force of the vehicle. Supply to BH (regenerate).
- the internal combustion engine E and the rotating electrical machine MG which can both be a driving force source for the wheels W, are drivingly connected via a clutch CL as a driving force source connecting device.
- drive coupling refers to a state in which two rotating elements are coupled so as to be able to transmit a driving force.
- the “drive connection” is a state where the two rotating elements are connected so as to rotate integrally, or the two rotating elements are driven via one or more transmission members. It includes a state where force is connected to be transmitted.
- a transmission member include various members that transmit rotation at the same speed or a variable speed, and include, for example, a shaft, a gear mechanism, a belt, a chain, and the like.
- an engagement device that selectively transmits rotation and driving force for example, a friction engagement device or a meshing engagement device may be included.
- the vehicle drive device 1 further includes a transmission TM, a counter gear mechanism CG, and a differential gear device DF. That is, as shown in FIG. 1, the vehicle drive device 1 has a power transmission path connecting the internal combustion engine E and the wheels W (that is, a power transmission path connecting the input shaft I and the output shaft O) to the internal combustion engine.
- a clutch CL In order from the engine E side, a clutch CL, a rotating electrical machine MG, a transmission TM, a counter gear mechanism CG, and a differential gear unit DF (output differential gear unit) are provided.
- devices from the clutch CL to the differential gear device DF are accommodated in a case 2 (drive device case) described later.
- the input shaft I is drivably coupled to an internal combustion engine E that functions as a driving force source for the wheels W together with the rotating electrical machine MG.
- the input shaft I is drivingly connected to the output shaft (crankshaft or the like) of the internal combustion engine E.
- the output shaft of the internal combustion engine E and the input shaft I may be drivingly connected via a damper or the like.
- a clutch CL as a driving force source coupling device selectively couples the input shaft I (internal combustion engine E) and the rotating electrical machine MG. That is, the clutch CL drives and connects the two driving force sources, the internal combustion engine E and the rotating electrical machine MG.
- the clutch CL is configured by a hydraulically driven frictional engagement device, an electromagnetically driven frictional engagement device, a meshing engagement device, or the like.
- the clutch CL may be a lock-up clutch of a torque converter, for example.
- the rotating electrical machine MG is disposed coaxially with the input shaft I.
- the rotating electrical machine MG includes a stator fixed to the case 2 and a rotor that is rotatably supported on the radially inner side of the stator.
- the stator includes a stator core and a stator coil wound around the stator core, and the rotor includes a rotor core and a permanent magnet disposed on the rotor core.
- the rotor of the rotating electrical machine MG is drivingly connected so as to rotate integrally with the intermediate shaft M.
- the intermediate shaft M is also an input shaft (transmission input shaft) of the transmission apparatus TM.
- the transmission TM is disposed coaxially with the input shaft I and the rotating electrical machine MG.
- the transmission device TM can be configured to include a stepped transmission mechanism that includes a gear mechanism such as a planetary gear mechanism and a plurality of engagement devices (such as a clutch and a brake) in order to form a plurality of shift stages.
- the transmission TM is a transmission mechanism (CVT: Continuously Variable Transmission (CVT)) that allows continuous shifting by passing a belt or chain through two pulleys (pulleys) and changing the pulley diameter. ).
- the transmission apparatus TM may be a gear mechanism with a fixed transmission ratio.
- the speed change device TM shifts the rotation of the input shaft and transmits the rotation to the output shaft, and if the speed change ratio is variable, the speed change device TM has a speed change mechanism that can change the speed change ratio. Any method may be used.
- the transmission TM shifts the rotation and torque input to the intermediate shaft M in accordance with the gear ratio at each time and converts the torque, and a transmission output gear that is an output member (transmission output member) of the transmission TM. Communicate to Go.
- the transmission output gear Go is drivingly connected to the counter gear mechanism CG.
- the counter gear mechanism CG has an input shaft I and the rotation axis parallel to each other and is arranged on a separate axis.
- “Parallel” means a parallel state or a state that can be regarded as substantially parallel (for example, a state of being parallel at an angle of 5 ° or less).
- the counter gear mechanism CG has two gears respectively formed on a common shaft member. One gear is engaged with the transmission output gear Go of the transmission apparatus TM, and the other gear is engaged with the differential input gear Gi of the differential gear apparatus DF.
- the differential gear unit DF has an input shaft I and the like, the counter gear mechanism CG, and a rotational axis that are parallel to each other and are arranged on different axes.
- the differential gear unit DF is drivingly connected to the wheel W via an output shaft O as an output member.
- the differential gear unit DF is configured to include a plurality of bevel gears that mesh with each other, and the rotation and torque input to the differential input gear Gi are applied to the two left and right output shafts O (that is, the two left and right wheels W). Distribute and communicate. Accordingly, the vehicle drive device 1 can cause the vehicle to travel by transmitting the torque of at least one of the internal combustion engine E and the rotating electrical machine MG to the wheels W.
- the rotating electrical machine MG that operates by a plurality of phases of alternating current (here, three-phase alternating current) is electrically connected to a high-voltage direct current power source BH (battery, capacitor, etc.) via an inverter 3.
- the power supply voltage of the high-voltage DC power supply BH is, for example, 200 to 400 [V].
- the high-voltage DC power source BH is a secondary battery (battery) such as a nickel metal hydride battery or a lithium ion battery, or an electric double layer capacitor.
- the high-voltage DC power supply BH can supply electric power to the rotating electrical machine MG via the inverter 3 and can store the electric power obtained by generating the electric power from the rotating electrical machine MG.
- DC link capacitor C for smoothing the voltage between the positive and negative electrodes (DC link voltage Vdc) on the DC side of the inverter 3 is provided.
- DC link capacitor C stabilizes a DC voltage (DC link voltage Vdc) that fluctuates according to fluctuations in power consumption of rotating electrical machine MG.
- the inverter 3 that converts power between DC power and AC power converts the DC power into AC power of a plurality of phases (here, three phases) and supplies the AC power to the rotating electrical machine MG, and the AC generated by the rotating electrical machine MG.
- the electric power is converted into DC power and supplied to the high voltage DC power supply BH.
- Inverter 3 and rotating electrical machine MG are connected via connection terminal 8.
- the inverter 3 includes a plurality of switching elements 30.
- the switching element 30 includes an IGBT (Insulated Gate Bipolar Transistor), a power MOSFET (Metal Oxide Semiconductor Semiconductor Field Field Effector Transistor), a SiC-MOSFET (Silicon Carbon-Metal Metal Oxide Semiconductor Semiconductor FET), a SiC-SIT (SiC-Static Inductor), etc. It is preferable to apply a power semiconductor element. As shown in FIG. 2, in the present embodiment, an IGBT is used as the switching element 30.
- the inverter 3 is configured by a bridge circuit having an arm corresponding to each of a plurality of phases. That is, as shown in FIG. 2, two switching elements 30 are connected in series between the DC positive electrode side and the DC negative electrode side of the inverter 3 to form one arm. In the case of three-phase alternating current, this series circuit (one arm) is connected in parallel with three lines (three phases). That is, a bridge circuit in which a set of series circuits (arms) corresponds to each of the stator coils corresponding to the U phase, the V phase, and the W phase of the rotating electrical machine MG is configured.
- Each switching element 30 includes a free wheel diode in parallel with the direction from the negative electrode to the positive electrode (the direction from the lower side to the upper side) as the forward direction.
- a three-phase arm inverter 3 configured to include a switching element 30 and a free wheel diode is modularized as a single package as an IPM (Intelligent Power Module) 32 (see FIGS. 5 and 6). ing.
- the inverter 3 is controlled by the inverter control device 80.
- the inverter control device 80 is constructed using a logic circuit such as a microcomputer as a core member.
- the inverter control device 80 is configured on the substrate 31 (see FIGS. 5 and 6), and is housed in the inverter housing chamber 51 (see FIGS. 4 to 6) together with the inverter 3. That is, in the present embodiment, the inverter device 100 is configured to include at least the inverter 3 and the inverter control device 80.
- the inverter control device 80 is supplied with power from a low-voltage DC power supply BL having a power supply voltage of, for example, about 12 to 24 [V], which is much lower than the above-described high-voltage DC power supply BH.
- the inverter control device 80 is a target of the rotating electrical machine MG provided as a request signal from another control device such as a vehicle ECU (Electronic Control Unit) 90 (vehicle control unit) via a CAN (Controller Area Network). Based on the torque, current feedback control using a vector control method is performed to control the rotating electrical machine MG via the inverter 3.
- An electric device low voltage DC power supply BL, vehicle ECU 90, etc.
- case 2 drive device case
- inverter control device 80 are connected via external connection terminal 33. That is, the external connection terminal 33 has a function of connecting the power supply line and the communication line.
- the inverter control device 80 is configured to have various functional units for current feedback control, and each functional unit is realized by cooperation of hardware such as a microcomputer and software (program). . Since the current feedback control is known, a detailed description thereof is omitted here.
- the actual current flowing through the stator coil of each phase of the rotating electrical machine MG is detected by the current sensor 39, and the inverter control device 80 acquires the detection result. Since the three-phase alternating current is balanced and the instantaneous value is always zero (center of amplitude), only two of the three phases may be detected, and the remaining one phase may be obtained by calculation. Further, the magnetic pole position and the rotational speed at each time point of the rotor of the rotating electrical machine MG are detected by a rotation sensor 38 such as a resolver, for example, and the inverter control device 80 acquires the detection result.
- the vehicle drive device 1 is the vehicle drive transmission device provided in the power transmission path connecting the internal combustion engine E and the wheels W, specifically, the clutch CL, the rotating electrical machine MG.
- the transmission TM, the counter gear mechanism CG, and the differential gear device DF are housed in a case 2 (drive device case).
- case 2 drive device case
- “accommodated in the case 2” means “enclosed in a space surrounded by the case outer wall 2a of the case 2”.
- FIG. 3 is an external view of the vehicle drive device 1.
- FIG. 4 is a partially exploded perspective view of the vehicle drive device 1.
- the vehicle drive device 1 has a characteristic structure with respect to housing the inverter 3 that controls the rotating electrical machine MG. Therefore, the vehicle drive device 1 only needs to include at least the rotating electrical machine MG serving as a driving force source for the wheels W and the inverter 3 that controls the rotating electrical machine MG in a space surrounded by the case outer wall 2a.
- the present invention is not limited to this aspect.
- the vehicle drive device 1 of the present embodiment includes at least a main body case 4 that houses the rotating electrical machine MG, an inverter case 5 joined to the main body case 4, and a joint to the inverter case 5.
- the inverter case cover 6 is provided. That is, the case 2 (drive device case) of the vehicle drive device 1 includes at least the main body case 4, the inverter case 5, and the inverter case cover 6.
- the case outer wall 2a which is the outermost part of the vehicle drive device 1, that is, the part exposed to the outside, includes at least a first outer wall forming part 4w which is an outer wall forming part of the main body case 4, an inverter A second outer wall forming portion 5 w that is an outer wall forming portion of the case 5 and an inverter case cover 6 are formed.
- the inverter case cover 6 is formed in a tray shape with a flat bottom, and almost the entire surface on the convex side becomes an outer wall forming portion.
- the convex side of the inverter case cover 6 may be referred to as a third outer wall forming portion.
- the case 2 may be configured by further including another member. In this case, the outer wall forming portion of the other member may constitute a part of the case outer wall 2a.
- a portion (power inverter module 30) corresponding to the inverter case 5 is completely enclosed by a casing (casing 12) and a lid (lid 36) that are joined together.
- the casing (casing 12) and the lid It is necessary to take out the part (power inverter ⁇ module 30) corresponding to the inverter (3) from the inside after separating (lid 36).
- a part of the inverter case 5 (second outer wall forming portion 5w) constitutes the case outer wall 2a. Therefore, the inverter 3 is arranged on the outermost side of the vehicle drive device 1. For this reason, the inverter 3 can be replaced by separating the inverter case 5 from the main body case 4.
- FIG. 5 shows a partially enlarged view of the VV cross section in FIG. 3, and FIG. 6 shows a partially enlarged view of the VI-VI cross section in FIG.
- an inverter accommodating chamber 51 for accommodating the inverter 3 is formed in at least a space surrounded by the inverter case 5.
- the inverter accommodating chamber 51 is appropriately sealed so that cooling oil, lubricating oil, water, and other liquids do not enter the case 2, particularly the inverter accommodating chamber 51, because electronic components are arranged.
- Reference numerals S 1, S 2, S 3 and S 4 in FIGS. 5 and 6 indicate sealing members that seal between the inside and the outside of the case 2.
- an O-ring, an X-ring, or the like made of a rubber material such as nitrile rubber, styrene rubber, silicone rubber, or fluorine rubber can be used.
- 1st sealing member S1 is arrange
- the inverter accommodating chamber 51 may also extend below the partition wall 55 in FIGS. 5 and 6 (region not shown). That is, the inverter accommodating chamber 51 may be partitioned by the partition wall portion 55, and the members constituting the inverter device 100 may be separately arranged in the two partitioned inverter accommodating chambers 51.
- a storage chamber (not shown) of the transmission device TM may be formed further below, and the inverter storage chamber 51 and the storage chamber of the transmission device TM may be separated in a liquid-tight state by a sealing member (not shown). .
- 2nd sealing member S2 is arrange
- the third sealing member S3 is disposed between the inverter case 5 and an external connection terminal 33 to be described later, and seals between the inverter accommodating chamber 51 and the external space of the vehicle drive device 1.
- the fourth sealing member S4 is disposed between the partition wall portion 55 of the inverter case 5 and a heat sink 9 described later in order to partition the flow path of the liquid refrigerant for cooling the inverter 3 in the inverter accommodating chamber 51. Then, the liquid refrigerant is sealed so as not to leak to the inverter 3 side.
- connection terminal 8 that electrically connects the rotating electrical machine MG and the inverter 3 is disposed in the inverter accommodating chamber 51.
- the connection terminal 8 extending from the main body case 4 side and connected to the inverter 3 is arranged in the inverter accommodating chamber 51.
- the connection terminal 8 is connected to the inverter 3 in the inverter accommodating chamber 51 by a fastening member 10 (see FIG. 7) such as a bolt that penetrates the fastening hole 8 a provided in the connection terminal 8. Since the connection terminal 8 is disposed in the inverter accommodating chamber 51, the connection terminal 8 can be exposed to the outside by removing the inverter case cover 6. For this reason, the workability at the time of attaching / detaching the inverter 3 to / from the vehicle drive device 1 is good, and the maintainability of the vehicle drive device 1 is also high.
- the wiring on the side of the main body case 4 with respect to the connection terminal 8 and at least one side of the inverter 3 side with respect to the connection terminal 8 is configured as a so-called bus bar.
- a current sensor 39 that detects current in a non-contact manner is disposed.
- the current sensor 39 may be provided on the side of the main body case 4 with respect to the connection terminal 8 and on the side of the inverter 3 with respect to the connection terminal 8.
- the contact-type current sensor 39 may be provided in the middle of any bus bar.
- the current sensor using the shunt resistor may be configured in each arm configuring the inverter 3 without being limited to the position illustrated in FIG. 2.
- the switching element 30 constituting the inverter 3 is accompanied by a large amount of heat. Therefore, as shown in FIGS. 5 and 6, the heat sink 9 is attached to the IPM which is the core of the inverter 3.
- the heat sink 9 is configured to be cooled by the liquid refrigerant, and the inverter 3 is cooled by exchanging heat with the liquid refrigerant via the heat sink 9.
- a liquid refrigerant supply port 7 a and a discharge port 7 b for cooling the inverter 3 are formed in the second outer wall forming portion 5 w of the inverter case 5. That is, the supply port 7a and the discharge port 7b for the liquid refrigerant are provided directly on the case outer wall 2a that is exposed to the outside of the case 2. 3, 4, and 6, for convenience, one of the refrigerant supply / discharge ports 7 is illustrated as a supply port 7 a and the other as a discharge port 7 b, but these functions may be reversed. .
- the refrigerant supply / exhaust port 7 is provided in the second outer wall forming portion 5w.
- the refrigerant supply / exhaust port 7 is formed directly in the inverter case 5. Therefore, the location where sealing is required is limited.
- the flow path of the refrigerant enters the accommodation space through the platform (platform 26) of the casing, and is connected to the inverter (power inverter module 30) in the accommodation space. Accordingly, the number of sealing portions is increased as compared with the present embodiment because at least the boundary between the external space and the housing space of the casing needs to be sealed.
- the electric device low voltage DC power supply BL, vehicle ECU 90
- the inverter device 100 inverter 3, inverter control device 80
- the external connection terminal 33 is also formed in the second outer wall forming portion 5w. That is, the external connection terminal 33 is provided directly on the inverter case 5, similarly to the refrigerant supply / exhaust port 7. Therefore, for example, as compared with the case of passing through the accommodation space as in Patent Document 1, the number of parts requiring sealing can be suppressed.
- the wiring between the electric device arranged in the external space and the inverter case 5 is also separated from the vehicle drive device 1. Therefore, workability when the inverter 3 is attached to and detached from the vehicle drive device 1 is also good.
- the main body case 4 includes a cylindrical (square cylinder-shaped) main body wall portion 4m that includes at least one of the vehicle drive transmission devices constituting the vehicle drive device 1, and an outer side from the main body wall portion 4m. And a projecting peripheral wall portion 4c formed so as to project around the projecting direction Y and to surround the projecting direction Y.
- a transmission TM that is one of the vehicle drive transmission devices is included inside the main body wall 4m.
- the end surface 4p in the protruding direction Y of the protruding peripheral wall portion 4c forms a so-called flange portion.
- the second outer wall forming portion 5w of the inverter case 5 is joined to the flange portion. By forming such a flange portion, the main body case 4 and the inverter case 5 can be appropriately joined.
- At least a part of the second outer wall forming portion 5 w of the inverter case 5 is formed in parallel with the first joint surface P ⁇ b> 1 joined to the protruding peripheral wall portion 4 c. 5h. Further, at least a part of the second outer wall forming portion 5w also has a wall portion (5c) protruding in the protruding direction Y from the first bonding surface P1 bonded to the protruding peripheral wall portion 4c.
- This wall portion (5c) is formed so as to surround the periphery of the protruding direction Y, and is formed as a surrounding wall portion 5c surrounding the inverter device 100 (inverter 3, inverter control device 80) from the direction orthogonal to the protruding direction Y.
- the surrounding wall portion 5c is formed so as to continue from the lid portion 5h and project in the projecting direction Y from the lid portion 5h.
- the second outer wall forming portion 5w is a region between the first joint surface P1 joined to the projecting peripheral wall portion 4c in the projecting direction Y and the second joint surface P2 joined to the inverter case cover 6.
- a surrounding wall portion 5c is formed so as to surround the periphery of the protruding direction Y and surrounds the inverter device 100 arranged inside.
- the inverter case 5 can ensure the thickness in the direction along the protruding direction Y by the surrounding wall portion 5c. For this reason, the inverter accommodating chamber 51 can be appropriately provided with the inverter case 5 as a core. Moreover, since the surrounding wall part 5c is a part of 2nd outer wall formation part 5w, the accommodation capacity of the inverter apparatus 100 by the inverter case 5 can be ensured, without impairing the detachability of the inverter case 5. Further, the inverter case cover 6 has a joining surface P3 joined to the second joining surface P2, and a bulging portion 61 bulging from the joining surface P3 to the side opposite to the inverter case 5 side. . The bulging portion 61 also forms the inverter accommodation chamber 51, and can secure the accommodation capacity of the inverter device 100.
- the surrounding wall portion 5c By providing the surrounding wall portion 5c, the surface area of the case outer wall 2a in the inverter case 5, that is, the second outer wall forming portion 5w is increased. By effectively utilizing the increased surface area, a connection portion with the outside of the vehicle drive device 1 can be appropriately provided.
- the refrigerant supply / discharge port 7 for the liquid refrigerant is formed in the surrounding wall portion 5c. Accordingly, as shown in FIGS. 5 and 6, in the present embodiment, from the side of the inverter 3, in the direction of the heat sink 9 disposed on the side of the main body case 4 with respect to the inverter 3, the refrigerant path appropriately 70 can be provided. That is, it is possible to form a refrigerant path 70 that is preferable for realizing good heat exchange without disturbing the flow of the refrigerant.
- the inverter case 5 has a partition wall portion 55 that partitions the main body case 4 side and the inverter case cover 6 side.
- This partition wall part 55 comprises at least one part of the inner wall 7w of the flow path which circulates a liquid refrigerant.
- the components constituting the inverter 3 is fixed to the partition wall portion 55.
- the IPM 32 that includes the switching element 30 that is the core of the inverter 3 is fixed so as to be in direct contact with the heat sink 9.
- the heat sink 9 is fixed to the partition wall portion 55.
- the terminals of the IPM 32 protrude in the opposite direction to the heat sink 9, penetrate the substrate 31, and are connected to the substrate 31 by soldering or the like.
- the electronic components constituting the inverter control device 80 are also mounted on the substrate 31, and the inverter control device 80 and the IPM 32 are electrically connected on the substrate 31.
- the inverter 3 is easily attached and detached and is sealed. A structure with a reduced number of locations is realized.
- the inverter housing chamber 51 for housing the inverter device 100 (inverter 3, inverter control device 80) is formed in a space surrounded by the inverter case 5 and the inverter case cover 6, and the inverter device 100 is The form arrange
- the inverter accommodating chamber 51 may be at least a space surrounded by the inverter case 5, and is surrounded by the space surrounded by the inverter case 5 and the main body case 4, the inverter case 5, the inverter case cover 6, and the main body case 4. It may be a confined space.
- the inverter accommodating chamber 51 is partitioned by the partition wall portion 55, and the members constituting the inverter device 100 are divided into two partitioned inverter accommodating chambers 51. They may be arranged separately.
- the refrigerant path 70 is provided from the side of the inverter 3 toward the heat sink 9 disposed on the main body case 4 side with respect to the inverter 3.
- the form was illustrated. That is, the form in which the refrigerant supply / discharge port 7 is formed in the enclosure wall 5c is illustrated.
- the refrigerant supply / discharge port 7 is not limited to this configuration as long as it is formed in the second outer wall forming portion 5w.
- the refrigerant supply / discharge port 7 may be formed in the lid 5h.
- the low voltage DC power supply BL and the vehicle ECU 90 are illustrated as the electric devices arranged in the external space of the case outer wall 2a.
- the inverter control device 80 can also be an electric device. Further, this does not prevent the high-voltage DC power supply BH from being used as this electric device.
- the form in which the external connection terminal 34 connected to the high-voltage DC power source BH is formed in the first outer wall forming portion 4 w is exemplified. However, this does not prevent the external connection terminal 34 from being formed on the second outer wall forming portion 5w.
- the vehicle drive device (1) includes: A vehicular drive device that includes a rotating electrical machine (MG) that serves as a driving force source for the wheel (W) and an inverter device (100) that controls the rotating electrical machine (MG) in a space surrounded by the case outer wall (2a).
- MG rotating electrical machine
- W driving force source for the wheel
- inverter device 100
- the case outer wall (2a) is at least a first outer wall forming portion (4w) that is an outer wall forming portion of the main body case (4), and a second outer wall forming portion (5w) that is an outer wall forming portion of the inverter case (5).
- a liquid refrigerant supply port (7a) and a discharge port (7b) for cooling the inverter device (100) are formed in the second outer wall forming portion (5w).
- the supply port (7a) and the discharge port (7b) of the liquid refrigerant are provided in the second outer wall forming portion (5w), in other words, the inverter device (100) to be cooled is accommodated.
- a supply port (7a) and a discharge port (7b) are formed directly in the inverter case (5). Therefore, the location where sealing is required is limited.
- the refrigerant flow path passes through the casing platform (platform 26) into the accommodation space, and is connected to the inverter device (100) in the accommodation space. Therefore, there are many sealing places compared with this structure by the part which needs sealing at the boundary part of the external space and accommodation space of a casing at least.
- the vehicle drive device (1) provided with the rotary electric machine (MG) used as the drive force source of a wheel (W), and the inverter apparatus (100) which controls this rotary electric machine (MG). Therefore, it is possible to realize a structure in which the maintenance of the inverter device (100) is easy and the number of places to be sealed is suppressed.
- MG rotary electric machine
- the outermost side of the vehicle drive device (1) that is, the case outer wall (2a) is formed by the first outer wall forming portion (4w), the second outer wall forming portion (5w), and the inverter case cover (6).
- a portion (power ⁇ ⁇ ⁇ ⁇ ⁇ inverter module 30) corresponding to the inverter case (5) is completely enclosed by a casing (casing 12) and a lid (lid 36) joined together. Therefore, for example, when the inverter device (100) needs to be replaced after the vehicle drive device (1) is assembled or after the vehicle drive device (1) is mounted on the vehicle, the structure of Patent Document 1 is used.
- the inverter device (100) After separating the casing (casing 12) and the lid (lid 36), it is necessary to take out a portion (power inverter module 30) corresponding to the inverter device (100) from the inside.
- a part of the inverter case (5) (the second outer wall forming portion (5w)) constitutes the case outer wall (2a) and is located on the outermost side of the vehicle drive device (1).
- An inverter device (100) is arranged. Therefore, the inverter device (100) can be replaced by separating the inverter case (5) and the main body case (4).
- connection terminal (8) which electrically connects a rotary electric machine (MG) and an inverter apparatus (100) is also arrange
- connection terminal (8) extends from the main body case (4) side and is connected to the inverter device (100) by a fastening member (10) in the inverter accommodating chamber (51). It is. Since the connection terminal (8) is disposed in the inverter accommodating chamber (51), the connection terminal (8) can be exposed to the outside by removing the inverter case cover (6). For this reason, workability
- the vehicle drive device (1) further includes an external connection terminal for electrically connecting the inverter device (100) and the electric device (BL, 90) disposed in the external space of the case outer wall (2a). It is preferable that (33) is formed in the second outer wall forming portion (5w). Similar to the refrigerant supply / discharge port (7) described above, the external connection terminal (33) is directly provided in the inverter case (5). Therefore, for example, as compared with the case of passing through the accommodation space as in Patent Document 1, the number of parts requiring sealing can be suppressed. If the inverter case (5) is separated from the vehicle drive device (1), the wiring between the electric device (BL, 90) arranged in the external space and the inverter case (5) are also provided. Separated from (1). Therefore, workability at the time of detaching the inverter device (100) from the vehicle drive device (1) is also good.
- the main body case (4) has a cylindrical main body wall (4m) and a protruding direction (Y) that is one of the directions from the main body wall (4m) toward the outside.
- a projecting peripheral wall portion (4c) formed so as to project toward the periphery of the projecting direction (Y), and an end surface (4p) of the projecting peripheral wall portion (4c) in the projecting direction (Y).
- the second outer wall forming portion (5w) is joined to the outer wall. According to this configuration, since the so-called flange portion is formed by the protruding peripheral wall portion (4c), the main body case (4) and the inverter case (5) can be appropriately joined.
- the second outer wall forming portion is joined to the first joint surface (P1) joined to the projecting peripheral wall portion (4c) in the projecting direction (Y) and the inverter case cover (6).
- a surrounding wall portion (5c) is formed so as to surround the periphery of the protruding direction (Y) in a region between the two joint surfaces (P2) and surrounds the inverter device (100) disposed inside. Is preferred. Since the thickness in the direction along the protruding direction (Y) can be secured by the surrounding wall portion (5c), the inverter accommodating chamber (51) can be appropriately provided.
- the surrounding wall part (5c) is a part of 2nd outer wall formation part (5w)
- the inverter apparatus (100) of an inverter case (5) Capacity can be secured.
- the surrounding wall portion (5c) By providing the surrounding wall portion (5c), the surface area of the case outer wall (2a) in the inverter case (5), that is, the second outer wall forming portion (5w) can be increased. And the connection part with the exterior of the drive device (1) for vehicles can be provided appropriately using the increased surface area effectively.
- the supply port (7a) and the discharge port (7b) of the liquid refrigerant are formed in the enclosure wall (5c).
- the inverter case (5) has a partition wall part (55) that partitions the main body case (4) side and the inverter case cover (6) side, and the partition wall part (55) , Constituting at least a part of the inner wall (7w) of the flow path (70) for circulating the liquid refrigerant, and at least a part of the parts constituting the inverter device (100) are connected to the partition wall part (55) And are preferably fixed.
- a liquid refrigerant is directly supplied and discharged, and a flow path (70) for circulating the liquid refrigerant in the inverter case (5) itself is provided. Since it is formed, the cooling structure can be simplified. Moreover, the number of locations requiring sealing is also suppressed.
- Vehicle drive device 2a Case outer wall 3: Inverter (inverter device) 4: Main body case 4c: Protruding peripheral wall portion 4m: Main body wall portion 4p: End face 4w: First outer wall forming portion 5: Inverter case 5c: Enclosure wall portion 5w: Second outer wall forming portion 6: Inverter case cover 7: Refrigerant supply / discharge Port 7a: Supply port 7b: Discharge port 7w: Inner wall 8: Connection terminal 10: Fastening member 33: External connection terminal 51: Inverter accommodation chamber 55: Partition wall 80: Inverter control device (inverter device) 90: Vehicle ECU (electric device arranged in the external space of the outer wall of the case) 100: Inverter device BL: Low voltage DC power supply (electric device arranged in the external space of the outer wall of the case) MG: rotating electric machine W: wheel Y: protruding direction
Abstract
Description
車輪の駆動力源となる回転電機及び当該回転電機を制御するインバータ装置を、ケース外壁によって囲まれた空間に内包する車両用駆動装置であって、
少なくとも前記回転電機を収容する本体ケースと、
前記本体ケースに接合されたインバータケースと、
前記インバータケースに接合されたインバータケースカバーと、を備え、
少なくとも前記インバータケースに囲まれた空間に前記インバータ装置を収容するインバータ収容室が形成され、
前記回転電機と前記インバータ装置とを電気的に接続する接続端子が前記インバータ収容室内に配置され、
前記ケース外壁が、前記本体ケースの外壁形成部である第1外壁形成部、前記インバータケースの外壁形成部である第2外壁形成部、前記インバータケースカバーにより形成され、
前記インバータ装置を冷却する液体冷媒の供給口及び排出口が、前記第2外壁形成部に形成されている。
以下、車両用駆動装置1のその他の実施形態について説明する。尚、以下に説明する各実施形態の構成は、それぞれ単独で適用されるものに限られず、矛盾が生じない限り、他の実施形態の構成と組み合わせて適用することも可能である。
以下、上記において説明した、車両用駆動装置(1)の好適な実施形態の概要について簡単に説明する。
車輪(W)の駆動力源となる回転電機及(MG)び当該回転電機(MG)を制御するインバータ装置(100)を、ケース外壁(2a)によって囲まれた空間に内包する車両用駆動装置(1)であって、
少なくとも前記回転電機(MG)を収容する本体ケース(4)と、
前記本体ケース(4)に接合されたインバータケース(5)と、
前記インバータケース(5)に接合されたインバータケースカバー(6)と、を備え、
少なくとも前記インバータケース(5)に囲まれた空間に前記インバータ装置(100)を収容するインバータ収容室(51)が形成され、
前記回転電機(MG)と前記インバータ装置(100)とを電気的に接続する接続端子(8)が前記インバータ収容室(51)内に配置され、
前記ケース外壁(2a)が、少なくとも前記本体ケース(4)の外壁形成部である第1外壁形成部(4w)、前記インバータケース(5)の外壁形成部である第2外壁形成部(5w)、前記インバータケースカバー(6)により形成され、
前記インバータ装置(100)を冷却する液体冷媒の供給口(7a)及び排出口(7b)が、前記第2外壁形成部(5w)に形成されている。
2a :ケース外壁
3 :インバータ(インバータ装置)
4 :本体ケース
4c :突出周壁部
4m :本体壁部
4p :端面
4w :第1外壁形成部
5 :インバータケース
5c :囲い壁部
5w :第2外壁形成部
6 :インバータケースカバー
7 :冷媒給排口
7a :供給口
7b :排出口
7w :内壁
8 :接続端子
10 :締結部材
33 :外部接続端子
51 :インバータ収容室
55 :仕切壁部
80 :インバータ制御装置(インバータ装置)
90 :車両ECU(ケース外壁の外部空間に配置された電気装置)
100 :インバータ装置
BL :低圧直流電源(ケース外壁の外部空間に配置された電気装置)
MG :回転電機
W :車輪
Y :突出方向
Claims (7)
- 車輪の駆動力源となる回転電機及び当該回転電機を制御するインバータ装置を、ケース外壁によって囲まれた空間に内包する車両用駆動装置であって、
少なくとも前記回転電機を収容する本体ケースと、
前記本体ケースに接合されたインバータケースと、
前記インバータケースに接合されたインバータケースカバーと、を備え、
少なくとも前記インバータケースに囲まれた空間に前記インバータ装置を収容するインバータ収容室が形成され、
前記回転電機と前記インバータ装置とを電気的に接続する接続端子が前記インバータ収容室内に配置され、
前記ケース外壁が、前記本体ケースの外壁形成部である第1外壁形成部、前記インバータケースの外壁形成部である第2外壁形成部、前記インバータケースカバーにより形成され、
前記インバータ装置を冷却する液体冷媒の供給口及び排出口が、前記第2外壁形成部に形成されている車両用駆動装置。 - 前記接続端子は、前記本体ケースの側から延伸して、前記インバータ収容室内において締結部材により前記インバータ装置に接続される請求項1に記載の車両用駆動装置。
- 更に、前記インバータ装置と前記ケース外壁の外部空間に配置された電気装置とを電気的に接続するための外部接続端子が前記第2外壁形成部に形成されている請求項1又は2に記載の車両用駆動装置。
- 前記本体ケースは、筒状の本体壁部と、前記本体壁部から外側に向かう方向の1つである突出方向に向けて突出すると共に前記突出方向の周囲を囲むように形成された突出周壁部とを有し、前記突出周壁部における前記突出方向の端面に前記第2外壁形成部が接合されている請求項1から3の何れか一項に記載の車両用駆動装置。
- 前記第2外壁形成部は、前記突出方向における前記突出周壁部に接合される第1接合面と、前記インバータケースカバーに接合される第2接合面との間の領域で前記突出方向の周囲を囲むように形成されて、内側に配置された前記インバータ装置を囲む囲い壁部を備える請求項4に記載の車両用駆動装置。
- 前記液体冷媒の前記供給口及び前記排出口が、前記囲い壁部に形成されている請求項5に記載の車両用駆動装置。
- 前記インバータケースは、前記本体ケースの側と前記インバータケースカバーの側とを区画する仕切壁部を有し、
前記仕切壁部は、前記液体冷媒を循環させる流路の内壁の少なくとも一部を構成し、
前記インバータ装置を構成する部品の少なくとも一部が、前記仕切壁部に対して固定されている請求項1から6の何れか一項に記載の車両用駆動装置。
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US15/518,661 US10259310B2 (en) | 2014-12-15 | 2015-12-08 | Vehicle drive device |
DE112015004417.5T DE112015004417T5 (de) | 2014-12-15 | 2015-12-08 | Fahrzeugantriebs-Vorrichtung |
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