WO2016185575A1 - 車載駆動装置 - Google Patents
車載駆動装置 Download PDFInfo
- Publication number
- WO2016185575A1 WO2016185575A1 PCT/JP2015/064425 JP2015064425W WO2016185575A1 WO 2016185575 A1 WO2016185575 A1 WO 2016185575A1 JP 2015064425 W JP2015064425 W JP 2015064425W WO 2016185575 A1 WO2016185575 A1 WO 2016185575A1
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- WO
- WIPO (PCT)
- Prior art keywords
- support member
- electric motor
- drive device
- flow path
- vehicle drive
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
Definitions
- the present invention relates to an in-vehicle drive device in which an electric motor and a power conversion unit are integrally formed.
- Patent Document 1 is disclosed as a rotating electrical machine system having such a structure.
- the electronic parts such as the sensor, the power module, and the smoothing capacitor are directly fixed to the housing of the motor. Therefore, it is necessary to assemble the electronic parts in the manufacturing process of the motor.
- the bus bar connection for electrically connecting the electronic components and the harness mounting process must be performed in the manufacturing process of the motor.
- the present invention has been proposed in view of the above-described circumstances, and provides an in-vehicle drive device capable of preventing an increase in the number of steps that require countermeasures against contamination and static electricity in the manufacturing process. For the purpose.
- an in-vehicle drive device includes an electric motor including a cooling flow path, and electric power conversion that converts electric power from a power source and outputs electric power to be supplied to the electric motor. And a support member that is mounted on the power converter and fixed to the electric motor. And this support member is provided with the cooling flow path connected to the cooling flow path of the electric motor.
- FIG. 1 is an exploded perspective view showing the structure of an in-vehicle drive device according to the first embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing the structure of the in-vehicle drive device according to the first embodiment of the present invention.
- 3A and 3B are diagrams showing the structure of the support member of the vehicle-mounted drive device according to the first embodiment of the present invention, in which FIG. 3A is an exploded perspective view and FIG. 3B is a rear view.
- FIG. 4 is an exploded perspective view showing the structure of the in-vehicle drive device according to the second embodiment of the present invention.
- FIG. 5 is a cross-sectional view showing the structure of the in-vehicle drive device according to the second embodiment of the present invention.
- FIG. 6 is an exploded perspective view showing the structure of the in-vehicle drive device according to the third embodiment of the present invention.
- FIG. 7 is an exploded perspective view showing the structure of the in-vehicle drive device according to the third embodiment of the present invention.
- FIG. 8 is an exploded perspective view showing the structure of the in-vehicle drive device according to the fourth embodiment of the present invention.
- FIG. 9 is a cross-sectional view showing the structure of the in-vehicle drive device according to the fourth embodiment of the present invention.
- FIG. 10 is a side view showing the structure of the in-vehicle drive device according to the fifth embodiment of the present invention.
- FIG. 11 is a diagram showing another structure of the support member that constitutes the in-vehicle drive device.
- FIG. 1 is an exploded perspective view showing the structure of the in-vehicle drive device according to this embodiment
- FIG. 2 is a cross-sectional view showing the structure of the in-vehicle drive device according to this embodiment.
- the in-vehicle drive device 1 according to the present embodiment includes an electric motor 3, a power conversion unit 5, and a support member 7.
- the electric motor 3 is, for example, a three-phase AC synchronous motor, and an outer shape is mainly formed from the electric motor housing 11, the end plate 13, and the upper surface plate 15.
- the output shaft of the electric motor 3 is connected to the speed reducer 17.
- the electric motor housing 11 is formed with an accommodating portion 19 for accommodating the power conversion portion 5 and the support member 7.
- the housing portion 19 is a box-shaped housing case formed integrally with the motor housing 11 at the upper portion of the motor housing 11.
- the power conversion portion 5 and the support member 7 are housed inside and sealed by the upper surface plate 15. Is done.
- a cooling flow path 21 is formed on the outer periphery of the motor housing 11, and the motor 3 is cooled by flowing cooling water.
- the cooling water flows from the support member 7 through the motor flow path inlet 23, circulates around the entire outer periphery of the motor housing 11, cools the motor 3, and then flows out of the motor 3.
- the power conversion unit 5 is an inverter formed by a power module 25 and other electronic component groups, such as a current sensor, a smoothing capacitor, a control board, a bus bar and a harness that connect each unit.
- the power conversion unit 5 converts the power from the power source and outputs the power to be supplied to the electric motor 3. Specifically, a direct current fed from a high-voltage battery for driving the vehicle through a junction box is converted into a three-phase alternating current by a power semiconductor and supplied to the electric motor 3.
- This three-phase alternating current is a current corresponding to the target torque at a frequency synchronized with the motor rotation speed, and is generated by switching the semiconductor switching element with a PWM signal.
- this embodiment demonstrates the case where the power module 25 is provided with the cooling flow path among the power conversion parts 5, the power conversion part 5 and the power module 25 do not need to be provided with the cooling flow path.
- the support member 7 is a member that is mounted on the surface and fixed to the electric motor housing 11 of the electric motor 3, and is, for example, a cast cooler.
- the support member 7 includes a cooling flow path 27 connected to the cooling flow path 21 of the electric motor 3, and the cooling flow path 27 is formed inside the support member 7.
- the support member 7 has a flat plate shape, and has a subassembly structure in which the power converter 5 is mounted on the surface. Further, a recessed space is provided on the entire back surface of the support member 7, and the cooling flow path 27 is formed by sealing with the bottom plate 29.
- the cooling flow path 27 has a shape in which the groove-shaped flow path reciprocates left and right by providing partition plates alternately.
- the shape of the cooling channel 27 can be freely changed by changing the arrangement of the partition plates, and the partition plates need not be provided.
- the support member 7 may be composed of a flow path substrate 51 and a support substrate 53 as shown in FIG.
- the flow path substrate 51 and the support substrate 53 are joined and integrated by welding or the like.
- a recessed space similar to FIG. 3 is provided on the entire back surface of the flow path substrate 51, and the cooling flow path 27 is formed by sealing with the support substrate 53.
- the bottom plate 29 shown in FIG. 3 is a thin plate for sealing, but the support substrate 53 of FIG. 11 has a thickness for ensuring strength as well as for sealing. Therefore, the thickness of the support substrate 53 may be, for example, the same as the channel substrate 51 or thicker than the channel substrate 51.
- the support member 7 shown in FIG. 3 and the support member 7 shown in FIG. 11 have the same overall thickness. Therefore, the strength of the support member 7 shown in FIG. 11 is improved even if the overall thickness is the same.
- the cooling water flows from the support member flow path inlet 31 and flows while reciprocating the cooling flow path 27 left and right, and flows from the power module flow path inlet 33 to the power module 25 near the center of the support member 7.
- the cooling water flowing in the power module 25 returns from the power module flow path outlet 35 to the cooling flow path 27, flows again while reciprocating left and right in the cooling flow path 27, and then flows from the support member 7 through the support member flow path outlet 37. leak.
- the cooling flow path 27 of the support member 7 and the cooling flow path 21 of the electric motor 3 are connected by a connecting pipe 39, and the cooling water flowing out from the support member 7 flows into the electric motor 3 and is used for cooling the electric motor 3.
- the support member 7 shown in FIG. 11 also has the same structure as the support member 7 shown in FIG. 3, so that the cooling water flows in the same manner to cool the electric motor 3.
- the power module flow path inlet 33 and the power module flow path outlet 35 of the support member 7 are openings provided in accordance with the positions of the cooling flow paths of the power module 25. Therefore, when the structure of the power module 25 is changed and the position of the cooling flow path is changed, the power module flow path inlet 33 and the power module flow path outlet 35 are matched to the position of the cooling flow path in the changed power module. The position of is also changed. Similarly, when the structure of the motor 3 is changed and the position of the motor flow path inlet 23 is changed, the position of the support member flow path outlet 37 is changed according to the position of the motor flow path inlet 23.
- the support member 7 may be formed of an elastic body. This is to prevent the heat dissipation performance and water tightness of the connection pipe 39 from being damaged by the deformation of the motor housing 11.
- the motor housing 11 since the motor housing 11 needs to be strong enough to be mounted on a vehicle, it has high rigidity. Further, when fixing the support member 7 to the electric motor 3, it is necessary to fix it to the electric motor housing 11 by bolting. On the other hand, before fixing the support member 7 to the electric motor 3, there is a step of inserting the stator of the electric motor 3 into the electric motor housing 11 by shrink fitting in consideration of heat resistance of the electronic components. When shrink fitting is performed, the motor housing 11 may be deformed.
- the support member 7 when the support member 7 is fixed, there is a possibility that a dimensional deviation due to shrink fitting is fixed by fastening. Therefore, the support member 7 is formed of an elastic body so as not to affect the heat transfer and sealing performance of the connection pipe 39 when the support member 7 is fixed, and the deformation of the motor housing 11 is absorbed. Avoid deformation. Thereby, it can prevent that the thermal radiation performance of the connection piping 39, watertightness, etc. are impaired.
- the elastic body may be disposed by thinning the position of the support member 7 to be fastened by the bolt. That is, the support member 7 is fixed to the electric motor 3 through the elastic body. Thereby, the effect similar to the case where the supporting member 7 is formed with an elastic body can be obtained by a simpler method.
- the manufacturing process of the vehicle-mounted drive device 1 will be described.
- the power conversion unit 5 is mounted on the support member 7.
- a power module 25 and other electronic component groups such as a current sensor, a smoothing capacitor, a control board, and the like are mounted, and a bus bar, a harness, and the like that connect each part are attached.
- the cooling flow path between the support member 7 and the power module 25 may be connected by a face seal or the like.
- the connecting pipe 39 may be welded to the support member 7.
- the process of mounting the electronic component can be manufactured in a room different from the motor manufacturing room, for example, the inverter manufacturing room. Become. Since the inverter manufacturing room has countermeasures against contamination and static electricity in advance, it is not necessary to take new countermeasures, and an increase in the number of processes requiring countermeasures can be prevented.
- a simple cover may be put on the support member 7 to prevent contamination and static electricity.
- a specially partitioned small room is prepared in the motor manufacturing chamber, a simple cover is removed in the small room, and the support member 7 is inserted and assembled from above the accommodating portion 19 of the motor housing 11. .
- the connecting pipe 39 is inserted into the motor flow path inlet 23 and combined.
- a shaft seal rubber packing or the like is performed to ensure water tightness.
- an operator may perform positioning and setup so that the shaft seal of the connecting pipe 39 is established, and then perform bolting for fixing the support member 7. And if the upper surface plate 15 is bolted finally, the manufacturing process of the vehicle-mounted drive device 1 which concerns on this embodiment will be completed.
- the power conversion unit 5 is mounted on the support member 7, and the support member 7 is fixed to the electric motor 3.
- the support member 7 includes a cooling flow path 27 connected to the cooling flow path 21 of the electric motor 3.
- the power conversion unit 5 includes a cooling channel
- the cooling channel 27 of the support member 7 includes the cooling channel 21 of the electric motor 3 and the cooling channel of the power conversion unit 5. Connect.
- the support member 7 is formed of an elastic body, even if the motor housing 11 is deformed by shrink fitting, the deformation of the motor housing 11 can be absorbed. Thereby, it can prevent that the thermal radiation performance, watertightness, etc. of the connection piping 39 grade
- the vehicle-mounted drive device 1 which concerns on this embodiment, since the supporting member 7 is fixed to the electric motor 3 via an elastic body, even if the electric motor housing 11 deform
- the cooling flow path 27 of the support member 7 is formed inside the support member 7.
- FIG. 4 is an exploded perspective view showing the structure of the in-vehicle drive device according to this embodiment
- FIG. 5 is a cross-sectional view showing the structure of the in-vehicle drive device according to this embodiment.
- the support member flow path outlet 37 of the support member 7 is directly connected to the motor flow path inlet 23 of the electric motor 3 and connected. This is different from the first embodiment.
- the support member 7 is inserted to the bottom of the accommodating portion 19 and is fastened and fixed by bolting at a position in contact with the outer periphery of the electric motor 3.
- the support member flow path outlet 37 of the support member 7 is formed at a position facing the motor flow path inlet 23 of the electric motor 3, the support member 7 is fastened and fixed simultaneously with the cooling of the support member 7.
- the flow path 27 and the cooling flow path 21 of the electric motor 3 are connected.
- the support member 7 may have the structure shown in FIG.
- a face seal between the support member flow path outlet 37 and the motor flow path inlet 23 is secured by a face seal.
- positioning pins having a locating structure are provided around the support member channel outlet 37 and the motor channel inlet 23 to ensure dimensional accuracy in the face seal portion.
- the support member flow path outlet 37 is connected in direct contact with the motor flow path inlet 23.
- FIG. 6 is an exploded perspective view showing the structure of the in-vehicle drive device according to the present embodiment.
- the support member 7 is disposed on the outer periphery of the cylindrical motor 3.
- the difference between the first and second embodiments is that the support member 7 is fixed to the motor 3 at a position where the distance between the motor 3 and the support member 7 is increased due to the cylindrical shape of the motor 3.
- the housing portion 19 is not formed in the motor housing 11, and a housing case 63 is provided in the support member 7 instead.
- the housing case 63 is a box-shaped protective case for housing electronic components such as the power module 25 mounted on the support member 7, and is installed on the support member 7.
- the motor housing 11 is formed with a fastening and fixing portion 65 for fixing the support member 7 with bolts.
- the fastening and fixing portion 65 is a pedestal in which a screw hole 67 is formed.
- connection between the cooling flow path 27 of the support member 7 and the cooling flow path 21 of the electric motor 3 may be a pipe such as the connection pipe 39 of the first embodiment, or will be described in the second embodiment.
- the cooling channel outlet of the support member 7 and the cooling channel inlet of the electric motor 3 may be connected in direct contact with each other.
- the support member 7 may have the structure shown in FIG.
- the electric motor 3 includes a rotor that rotates as a drive shaft and a stator that generates a rotating magnetic field for rotating the rotor, and has an inner rotor structure.
- the stator is fixed to the motor housing 11 by shrink fitting or the like. Both the rotor and the stator are circular in cross section, and when the support member 7 is arranged on the outer periphery of the electric motor 3, a portion where the distance between the support member 7 and the stator is large and a portion where small are generated. Since the support member 7 has a flat plate structure, the center of the support member 7 has a small distance from the stator, and the outside has a large distance from the stator.
- the motor housing 11 As a method of fixing the support member 7 to the electric motor housing 11, fastening is mainly used in a vehicle.
- the motor housing 11 In order to reduce the weight of the vehicle, the motor housing 11 is designed to be thin as long as its strength is not impaired.
- the motor housing 11 is designed to be thin at a portion between the support member 7 and the stator, where the strength when mounted on the vehicle is relatively not required.
- the portion between the support member 7 and the stator is designed to be thin.
- the support member 7 may be arranged with a space between the motor housing 11. That is, by increasing the height of the fastening and fixing portion 65, a space (air layer) is provided between the lower surface of the support member 7 and the upper surface of the electric motor housing 11 so as not to contact.
- the connection between the cooling flow path 27 of the support member 7 and the cooling flow path 21 of the electric motor 3 may be made using a pipe such as the connection pipe 39 of the first embodiment.
- the motor 3 generates heat due to iron loss of the rotor, iron loss of the stator core, and copper loss of the exciting coil.
- the power module 25, the smoothing capacitor, the current sensor, the control board, and the like which are electronic components, change their characteristics depending on the temperature, and have a heat resistant temperature lower than that of the rotor magnet and the exciting coil insulating material. Therefore, the electric motor 3 is water-cooled so that the heat generated by the electric motor 3 does not diffuse to the surroundings.
- the space in addition to the water cooling of the electric motor 3, the space (air layer) is provided without contacting the upper surface of the motor housing 11 and the lower surface of the support member 7. The heat of the electric motor 3 can be prevented from being transmitted to the support member 7.
- the support member 7 is disposed on the cylindrical outer periphery of the electric motor 3. Then, the support member 7 is fixed to the electric motor 3 at a position where the interval between the electric motor 3 and the support member 7 is increased due to the cylindrical shape of the electric motor 3. Thereby, the supporting member 7 can be fixed while ensuring the strength reliability of the electric motor 3.
- the vehicle-mounted drive device 71 since the support member 7 is disposed with a space between the motor 3, it is possible to suppress the heat of the motor 3 from being transmitted to the support member 7. The thermal interference between the electric motor 3 and the electronic component group can be suppressed.
- FIG. 8 is an exploded perspective view showing the structure of the in-vehicle drive device according to this embodiment
- FIG. 9 is a cross-sectional view showing the structure of the in-vehicle drive device according to this embodiment.
- the surface of the support member 7 on which the power conversion unit 5 is mounted is fixed toward the electric motor 3 side. This is different from the embodiment.
- the back surface of the support member 7 serves as a lid for sealing the accommodating portion 19, and the upper surface plate 15 of the first embodiment is omitted. Can do.
- the cooling flow path 27 of the support member 7 and the cooling flow path 21 of the electric motor 3 are connected by a connecting pipe 83.
- the connecting pipe 83 is, for example, an extension of a bulge attached to a cooler and a shaft seal attached to the tip thereof.
- the connecting pipe 83 is disposed outside the housing portion 19 and is disposed between the support member channel outlet 85 and the motor channel inlet 87. Connect.
- the support member 7 may have the structure shown in FIG.
- the connecting pipe 83 is inserted into the motor flow path inlet 87 at the same time as the entire assembly. At this time, shaft sealing (rubber packing) is performed to ensure water tightness.
- an operator may perform positioning and setup so that the shaft seal of the connecting pipe 83 is established, and then perform bolting for fixing the support member 7. As a result, the connecting pipe 83 can be connected simultaneously with the assembly of the support member 7.
- the surface of the support member 7 on which the power conversion unit 5 is mounted is fixed toward the electric motor 3 side.
- the number of components can be omitted and the number of components can be reduced.
- FIG. 10 is a side view showing the structure of the in-vehicle drive device according to the present embodiment.
- the in-vehicle drive device 91 according to the present embodiment is different from the first to fourth embodiments in that the support member 7 is disposed on the side of the electric motor 3.
- the support member 7 is fastened and fixed to the side of the end plate 13 of the electric motor 3.
- the support member 7 is mounted with an electronic component group such as the power module 25 and has a support member flow path outlet on the back surface.
- the cooling flow path 27 of the support member 7 is connected to the cooling flow path 21 of the motor 3 through the motor flow path inlet of the end plate 13.
- the cooling flow path between the support member 7 and the end plate 13 may be connected by a face seal.
- the support member 7 is covered with a housing case 93 together with the mounted power conversion unit 5.
- the support member 7 is disposed on the outer periphery of the electric motor 3.
- the electric motor 3 is parallel to the vehicle. . Therefore, the support member 7 arranged on the outer periphery of the electric motor 3 is also arranged above the electric motor 3 in parallel with the vehicle, increasing the height of the apparatus.
- the output shaft of the electric motor 3 is perpendicular to the drive shaft or propeller shaft of the vehicle. It is also perpendicular to the vehicle. Therefore, if the size of the support member 7 is within the height range of the electric motor 3, the height of the in-vehicle drive device 91 will not increase beyond the height of the electric motor 3, and the height of the in-vehicle drive device 91 will be increased. Can be suppressed.
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- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
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Abstract
Description
[車載駆動装置の構成]
図1は本実施形態に係る車載駆動装置の構造を示す分解斜視図であり、図2は本実施形態に係る車載駆動装置の構造を示す断面図である。図1、2に示すように、本実施形態に係る車載駆動装置1は、電動機3と、電力変換部5と、支持部材7とを備えている。
次に、本実施形態に係る車載駆動装置1の製造工程を説明する。本実施形態に係る車載駆動装置1の製造工程では、まず支持部材7に電力変換部5を搭載する。支持部材7上には、パワーモジュール25やその他の電子部品群、例えば電流センサや平滑コンデンサ、制御基板等が搭載され、各部を接続するバスバやハーネス等が取り付けられる。この際、支持部材7とパワーモジュール25との間の冷却流路の接続は、面シール等で行えばよい。また、連結配管39は支持部材7に溶接すればよい。
以上詳細に説明したように、本実施形態に係る車載駆動装置1では、支持部材7に電力変換部5を搭載し、この支持部材7を電動機3に固定する。これにより、電動機3の製造室内では支持部材7を固定する工程のみ行えばよいので、コンタミネーションや静電気の対策が必要な工程の増加を防止することができる。また、支持部材7は電動機3の冷却流路21に接続された冷却流路27を備えている。これにより、電動機3の構造が変更された場合でも、支持部材7の冷却流路の接続位置を変更するだけで電動機3と支持部材7の冷却流路を接続することができ、設計負担を軽減できるとともに汎用性を高めることができる。
次に、本発明の第2実施形態に係る車載駆動装置について図面を参照して説明する。尚、第1実施形態と同一の構成要素には同一の番号を付して詳細な説明は省略する。
図4は本実施形態に係る車載駆動装置の構造を示す分解斜視図であり、図5は本実施形態に係る車載駆動装置の構造を示す断面図である。図4、5に示すように、本実施形態に係る車載駆動装置41では、支持部材7の支持部材流路出口37が電動機3の電動機流路入口23と直接接触して接続されたことが第1実施形態と相違している。
以上詳細に説明したように、本実施形態に係る車載駆動装置41では、支持部材流路出口37が電動機流路入口23と直接接触して接続されている。これにより、支持部材7の冷却流路27と電動機3の冷却流路21とを接続するための配管をなくすことができるので、構成部品を削減することができる。
次に、本発明の第3実施形態に係る車載駆動装置について図面を参照して説明する。尚、第1及び第2実施形態と同一の構成要素には同一の番号を付して詳細な説明は省略する。
図6は本実施形態に係る車載駆動装置の構造を示す分解斜視図である。図6に示すように、本実施形態に係る車載駆動装置61では、支持部材7を円柱形状の電動機3の外周に配置する。そして、電動機3の円柱形状によって電動機3と支持部材7との間の間隔が大きくなった位置で、支持部材7を電動機3に固定したことが第1及び第2実施形態と相違している。
以上詳細に説明したように、本実施形態に係る車載駆動装置61では、支持部材7を電動機3の円柱形状の外周に配置する。そして、電動機3の円柱形状によって電動機3と支持部材7との間の間隔が大きくなった位置で、支持部材7を電動機3に固定する。これにより、電動機3の強度信頼性を確保しながら支持部材7を固定することができる。
次に、本発明の第4実施形態に係る車載駆動装置について図面を参照して説明する。尚、第1~第3実施形態と同一の構成要素には同一の番号を付して詳細な説明は省略する。
図8は本実施形態に係る車載駆動装置の構造を示す分解斜視図であり、図9は本実施形態に係る車載駆動装置の構造を示す断面図である。図8、9に示すように、本実施形態に係る車載駆動装置81では、支持部材7の電力変換部5を搭載した側の面を電動機3側に向けて固定したことが第1~第3実施形態と相違している。
以上詳細に説明したように、本実施形態に係る車載駆動装置81によれば、支持部材7の電力変換部5を搭載した側の面を電動機3側に向けて固定したので、上面プレート15等の部品を省略して構成部品を削減することができる。
次に、本発明の第5実施形態に係る車載駆動装置について図面を参照して説明する。尚、第1~第4実施形態と同一の構成要素には同一の番号を付して詳細な説明は省略する。
図10は本実施形態に係る車載駆動装置の構造を示す側面図である。図10に示すように、本実施形態に係る車載駆動装置91では、支持部材7を電動機3の側方に配置したことが第1~第4実施形態と相違している。
以上詳細に説明したように、本実施形態に係る車載駆動装置91によれば、支持部材7を電動機3の側方に配置したので、車載駆動装置91の高さを低減することができる。
3 電動機
5 電力変換部
7 支持部材
11 電動機ハウジング
13 エンドプレート
15 上面プレート
17 減速機
19 収容部
21、27 冷却流路
23、87 電動機流路入口
25 パワーモジュール
29 底板
31 支持部材流路入口
33 パワーモジュール流路入口
35 パワーモジュール流路出口
37、85 支持部材流路出口
39、83 連結配管
51 流路基板
53 支持基板
63、93 収容ケース
65 締結固定部
Claims (10)
- 冷却流路を備えた電動機と、
電源からの電力を変換して前記電動機に供給するための電力を出力する電力変換部と、
前記電力変換部を搭載して前記電動機に固定される支持部材とを備え、
前記支持部材は、前記電動機の冷却流路に接続された冷却流路を備えていることを特徴とする車載駆動装置。 - 前記電力変換部は冷却流路を備え、
前記支持部材の冷却流路は、前記電動機の冷却流路と前記電力変換部の冷却流路とを接続することを特徴とする請求項1に記載の車載駆動装置。 - 前記支持部材の冷却流路の出口は、前記電動機の冷却流路の入口と直接接触して接続されることを特徴とする請求項1または2に記載の車載駆動装置。
- 前記電動機は円柱形状をしており、
前記支持部材は前記電動機の円柱形状の外周に配置され、
前記電動機の円柱形状によって、前記電動機と前記支持部材との間の間隔が大きくなった位置で、前記支持部材を前記電動機に固定することを特徴とする請求項1または2に記載の車載駆動装置。 - 前記支持部材は、前記電動機との間に空間を設けて配置されることを特徴とする請求項4に記載の車載駆動装置。
- 前記支持部材は、前記電力変換部を搭載した側の面を前記電動機側に向けて固定されることを特徴とする請求項1または2に記載の車載駆動装置。
- 前記支持部材は、弾性体で形成されていることを特徴とする請求項1~6のいずれか1項に記載の車載駆動装置。
- 前記支持部材は、弾性体を介して前記電動機に固定されていることを特徴とする請求項1~6のいずれか1項に記載の車載駆動装置。
- 前記支持部材は、前記電動機の側方に配置されることを特徴とする請求項1または2に記載の車載駆動装置。
- 前記支持部材の冷却流路は、前記支持部材の内部に形成されていることを特徴とする請求項1~9のいずれか1項に記載の車載駆動装置。
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CA2986550A CA2986550C (en) | 2015-05-20 | 2015-05-20 | Drive device |
PCT/JP2015/064425 WO2016185575A1 (ja) | 2015-05-20 | 2015-05-20 | 車載駆動装置 |
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US20180159403A1 (en) | 2018-06-07 |
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