Control device and drive device

Abstract

The utility model provides a control device and a driving device. A drive device according to one embodiment is a control device that controls a motor. The drive device includes: a power module; a first electronic component having any function of voltage regulation, current distribution, or capacitor; and a housing that houses the power module and the first electronic component. The housing is provided with a flow path. The flow path has an intervening flow path portion located between the power module and the first electronic component in the first direction.

Description

Technical Field

[0001] This utility model relates to a control device and a drive device. Background Technology

[0002] The control device for controlling the motor includes multiple electronic components that function as heat-generating elements. The control device also includes flow paths for cooling these electronic components (e.g., Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Publication No. 2013-031330

[0004] Each electronic component generates a different amount of heat. Therefore, in a control device, simply arranging the electronic components along the flow path not only increases the size of the control device but also fails to adequately improve the cooling efficiency of each electronic component. Utility Model Content

[0005] In view of the above, one of the objectives of this invention is to provide a control device and drive device that can efficiently cool electronic components while suppressing their large size.

[0006] The first aspect of this utility model is a control device for controlling a motor, characterized in that the control device comprises: a power module; a first electronic component having any function of voltage adjustment, current distribution, or capacitor; and a housing that houses the power module and the first electronic component, wherein a flow path is provided on the housing, the flow path having an intervening flow path portion located in a first direction between the power module and the first electronic component.

[0007] The second type of control device of this utility model is characterized in that, in the first type of control device, the intervention flow path section has: a first flow path section that cools the power module; and a second flow path section that cools the first electronic component.

[0008] The control device of the third aspect of this utility model is characterized in that, in the control device of the second aspect, the first flow path section and the second flow path section are arranged in the first direction.

[0009] The fourth type of control device of this utility model is characterized in that, in the second type of control device, the direction perpendicular to the first direction is set as the second direction, and the first flow path part and the second flow path part are arranged in the second direction.

[0010] The fifth type of control device of this utility model is characterized in that, in the first type of control device, the flow path further includes a third flow path section, and in the first direction, the power module is located between the intervention flow path section and the third flow path section.

[0011] The sixth aspect of the control device of this utility model is characterized in that, in the first aspect of the control device, the control device has a second electronic component housed in the housing, the second electronic component having any function of voltage adjustment, current distribution or capacitor, the direction perpendicular to the first direction is set as the second direction, and the second electronic component overlaps with the intervention flow path in the first direction or the second direction.

[0012] The seventh type of control device of this utility model is characterized in that, in the first type of control device, the control device has a second electronic component housed in the housing, the second electronic component has any function of voltage adjustment, current distribution or capacitor, the direction perpendicular to the first direction is set as the second direction, and the second electronic component overlaps with at least one of the power module or the first electronic component in the first direction or the second direction.

[0013] The control device of the eighth aspect of this utility model is characterized in that, in the control device of the sixth or seventh aspect, the control device has a plurality of the second electronic components.

[0014] The ninth aspect of the control device of this utility model is characterized in that, in the eighth aspect of the control device, a plurality of second electronic components overlap each other in the first direction or the second direction.

[0015] The control device of the tenth aspect of this utility model is characterized in that, in the control device of the first aspect, the housing has a wall portion located between the power module and the first electronic component in the first direction, and the intervention flow path portion is disposed on the wall portion.

[0016] The control device of the eleventh aspect of this utility model is characterized in that, in the control device of the first aspect, the control device has a heating device, the heating device has a heater part and a control part for controlling the heater part, the control part being housed in the housing.

[0017] The twelfth aspect of this utility model is a driving device, characterized in that the driving device comprises: a control device of any one of the first to eleventh aspects described above; the motor; and a motor housing that houses the motor, the housing being interconnected with the motor housing.

[0018] The thirteenth type of drive device of this utility model is characterized in that, in the twelfth type of drive device, the power module and the first electronic component are located on one side of the first direction relative to the motor, and the power module is located on the other side of the first direction relative to the first electronic component.

[0019] The fourteenth type of drive device of this utility model is characterized in that, in the twelfth type of drive device, the power module and the first electronic component are located on one side of the first direction relative to the motor, and the first electronic component is located on the other side of the first direction relative to the power module.

[0020] The driving device of the fifteenth embodiment of this utility model is characterized in that, in the driving device of the twelfth embodiment, the flow path includes: a first flow path section that cools the power module; a second flow path section that cools the first electronic component; and a fourth flow path section disposed in the motor housing and cooling the motor, wherein the intervention flow path section has the first flow path section and the second flow path section, and in the first direction, the power module is located between the intervention flow path section and the fourth flow path section.

[0021] The sixteenth aspect of the driving device of this utility model is characterized in that, in the fifteenth aspect of the driving device, at least one of the first flow path section and the second flow path section is connected to the fourth flow path section.

[0022] The driving device of the seventeenth embodiment of this utility model is characterized in that, in the driving device of the fifteenth embodiment, the power module and the first electronic component are located on one side of the first direction relative to the motor, the power module is located on the other side of the first direction relative to the first electronic component, and the flow path has a third flow path portion located in the first direction between the power module and the fourth flow path portion.

[0023] The driving device of the eighteenth embodiment of this utility model is characterized in that, in the driving device of the twelfth embodiment, the housing has: a first receiving portion connected to the motor housing, which receives one of the power module or the first electronic component; a second receiving portion connected to one side of the first receiving portion in the first direction, which receives the other of the power module or the first electronic component; and a cover portion connected to the second receiving portion, the first receiving portion having a first opening on one side in the first direction, the second receiving portion having: a bottom wall portion covering the first opening; and a second opening on one side in the first direction, the cover portion covering the second opening, and the intervention flow path portion disposed on the bottom wall portion.

[0024] According to this utility model, one of its objectives is to provide a control device and drive device that can efficiently cool electronic components while suppressing their large size. Attached Figure Description

[0025] Figure 1 This is a perspective view of the driving device in the implementation method.

[0026] Figure 2 This is a cross-sectional schematic diagram of the driving device in the embodiment.

[0027] Figure 3 This is a cross-sectional schematic diagram of the drive device in variation 1.

[0028] Figure 4 This is a cross-sectional schematic diagram of the drive device in variation 2.

[0029] Figure 5 This is a cross-sectional schematic diagram of the drive device in variation 3.

[0030] Figure 6 This is a cross-sectional schematic diagram of the drive device in variation 4.

[0031] Figure 7 This is a cross-sectional schematic diagram of the drive device in variation 5.

[0032] Figure 8 This is a cross-sectional schematic diagram of the drive device in variation 6.

[0033] Label Explanation

[0034] 1, 101, 201, 301, 401, 501, 601: Drive unit; 2: Motor; 6A: Motor housing; 6C: Electronic component housing (casing); 7, 107, 207, 307, 407, 507, 607: Control unit; 11: Power module; 12: Power integrated system (first electronic component); 13: Current distribution unit (second electronic component); 14: Capacitor (second electronic component); 15, 115: Heating device; 15a, 115a: Heater section; 15b, 115b: Heater control section (control section); 61h: First opening; 61A: First storage section; 64, 464, 664: Second storage section; 64h, 664h: Second opening; 65: Third cover component (cover); 90, 190, 290, 390, 690: Flow path; 90A, 190A, 390A, 690A: Intervening flow path section; 91, 191, 391: First flow path section; 92, 192, 392: Second flow path section; 94: Fourth flow path section; 293: Third flow path section; 669: Flow path component (wall); D1: First direction; D2: Second direction. Detailed Implementation

[0035] The drive device of the embodiment will now be described with reference to the accompanying drawings. In the following description, the direction of gravity is defined based on the positional relationship when the drive device is mounted on a vehicle located on a horizontal road surface. Furthermore, the XYZ coordinate system is appropriately shown in each figure. The Z-axis is the vertical direction, with +Z side being the upper side and -Z side being the lower side. The Y-axis is the left-right direction of the vehicle equipped with the drive device. The X-axis is the front-back direction of the vehicle equipped with the drive device.

[0036] In the following description, unless otherwise specified, the direction parallel to the first axis J1 of motor 2 (Y-axis direction) will be referred to as "axial Y", the radial direction centered on the first axis J1 will be referred to as "radial", and the circumferential direction centered on the first axis J1, i.e., the direction around the first axis J1, will be referred to as "circumferential".

[0037] Furthermore, in the following description, the control device 7 and the drive device 1 will be described using mutually perpendicular first directions D1 and second directions D2. In this specification, first direction D1 and second direction D2 are directions perpendicular to the Y-axis. Additionally, in this specification, first direction D1 is parallel to the vertical direction (i.e., the Z-axis), and second direction D2 is parallel to the vehicle's longitudinal direction (i.e., the X-axis). Second direction D2 can be any direction perpendicular to first direction D1; if first direction D1 is parallel to the vertical Z-axis, first direction D1 can also be parallel to the Y-axis.

[0038] In the following explanation, one side of the first direction D1 refers to the direction in which the arrow of the first direction D1 in the diagram points (+D1), and the other side of the first direction D1 refers to the direction opposite to the direction in which the arrow of the first direction D1 in the diagram points (-D1). Similarly, one side of the second direction D2 refers to the direction in which the arrow of the second direction D2 in the diagram points (+D2), and the other side of the second direction D2 refers to the direction opposite to the direction in which the arrow of the second direction D2 in the diagram points (-D2).

[0039] <Driver>

[0040] Figure 1 This is a perspective view of the drive unit 1 according to this embodiment. The drive unit 1 of this embodiment is mounted on vehicles such as hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHV), and electric vehicles (EV) that use the motor 2 as a power source, and is used as their power source.

[0041] The drive unit 1 includes a motor 2, a transmission mechanism 3, and a control unit 7. Furthermore, as described later, the motor 2 has a motor housing 6A, the transmission mechanism 3 has a gear housing 6B, and the control unit 7 has an electronic component housing (outer shell) 6C. The motor housing 6A, gear housing 6B, and electronic component housing 6C are interconnected to form a housing connector 6. That is, the housing connector 6 houses the motor 2, the transmission mechanism 3, and the control unit 7.

[0042] The housing connector 6 is constructed by combining multiple components. The housing connector 6 has a housing body 61, a first cover component 63, a second cover component 62, a second storage portion 64, and a third cover component (cover portion) 65. A portion of the housing body 61 and the first cover component 63 constitute a motor housing 6A. A portion of the housing body 61 and the second cover component 62 constitute a gear housing 6B. A portion of the housing body 61, the third cover component 65, and the second storage portion 64 constitute an electronic component housing 6C.

[0043] <Motor>

[0044] Figure 2 This is a cross-sectional schematic diagram of the drive device 1 in this embodiment.

[0045] The motor 2 in this embodiment is, for example, an internal rotor type three-phase AC motor. Motor 2 functions both as a motor to output power and as a generator to generate electricity. Motor 2 can also be used as either an engine or a generator. Furthermore, the structure of motor 2 is not limited to this embodiment; for example, it can also be a four-phase or higher AC motor.

[0046] Motor 2 has a rotor 20, a stator 25, and a motor housing 6A. The rotor 20 is rotatable about a first axis J1. The rotor 20 is rotatably supported on the motor housing 6A via bearings (not shown). The stator 25 is located radially outward of the rotor 20, surrounding the rotor 20 from the radial outward. The stator 25 is fixed to the inner surface of the motor housing 6A.

[0047] The motor housing 6A houses the rotor 20 and the stator 25. The motor housing 6A has: a cylindrical portion 6d, which is cylindrical about a first axis J1; and a first cover member 63, which covers an opening on the opposite axial side (-Y) of the cylindrical portion 6d. The cylindrical portion 6d surrounds the stator 25 radially outward. The cylindrical portion 6d is part of the housing body 61. The first cover member 63 is fastened to the cylindrical portion 6d.

[0048] <Transmission Mechanism>

[0049] like Figure 1As shown, the transmission mechanism 3 is located on one side (+Y) of the axial direction of the motor 2. The transmission mechanism 3 is connected to the rotor 20. The transmission mechanism 3 has multiple gears (not shown) that transmit power to the rotor 20, multiple shafts and a differential device, a gear housing 6B that houses them, and an output shaft 55 that outputs power to the rotor 20. When the vehicle turns, the differential device absorbs the speed difference between the left and right wheels while transmitting the same torque to a pair of output shafts 55. The output shafts 55 are rotatable about a second axis J3 that is parallel to the first axis J1. Wheels (not shown) are respectively provided on the pair of output shafts 55. In this embodiment, the output shafts 55 are located on the other side (-D2) in the second direction relative to the first axis J1.

[0050] <Control Device>

[0051] Control device 7 controls motor 2. Control device 7 has at least the function of an inverter. That is, control device 7 is connected to the battery and converts the direct current supplied by the battery into alternating current. In addition, control device 7 is connected to stator 25 and supplies alternating current to stator 25. Control device 7 is located above motor 2 and is positioned on the opposite side (-Y) axially relative to transmission mechanism 3.

[0052] like Figure 2 As shown, the control device 7 of this embodiment includes a power module 11, a power integration system (first electronic component) 12, a current distribution unit (second electronic component) 13, a capacitor (second electronic component) 14, a heating device 15, and an electronic component housing 6C. However, the electronic components provided in the control device 7 are not limited to those described above. Furthermore, the control device 7 may also include electronic components other than those described above.

[0053] The power module 11 includes, for example, a switching element, a circuit board on which the switching element is mounted, and a heat sink in contact with the switching element. The switching element is, for example, an insulated gate bipolar transistor (IGBT). Alternatively, the switching element can also be a field-effect transistor such as a metal-oxide-semiconductor field-effect transistor (MOSFET).

[0054] The power integrated system 12 has a voltage regulation function. In this embodiment, the power integrated system 12 includes, for example, an on-board charger (OBC) 12a and a DC / DC converter 12b. The on-board charger 12a is a system for converting AC voltage supplied via a plug into DC voltage and charging the battery. The DC / DC converter 12b is a component that converts the voltage supplied from the battery and charges other batteries with lower voltages. Alternatively, the power integrated system 12 may only need to include at least one of the DC / DC converter 12b or the on-board charger 12a. Furthermore, the DC / DC converter 12b can also boost the voltage supplied from the battery and supply it to other electronic components, etc.

[0055] The current distribution unit 13 is a power distribution unit (PDU) with the function of current distribution. The current distribution unit 13 is the part that distributes the current supplied from the battery to various electrical installations in the vehicle, including the power module 11.

[0056] Capacitor 14 is, for example, a film capacitor. Capacitor 14 is connected between the battery (not shown) and the power module 11. Capacitor 14 is provided to smooth the DC current supplied to the power module 11.

[0057] The heating device 15 includes a heater section 15a and a heater control section (control section) 15b. A pipe P is connected to the heater section 15a. Pipe P is a circulation path for fluids such as water, refrigerant, or air. An external device, which is the object to be heated by the heater section 15a, is connected to the path of pipe P. For example, a battery is the external device to be heated by the heating device 15. The heating device 15 heats the fluid in pipe P within the heater section 15a, and then heats the battery via this fluid. The heater control section 15b is connected to a temperature sensor (not shown) that measures the temperature of the battery. The heater control section 15b controls the heater section 15a based on the battery temperature detected by the temperature sensor. Alternatively, the heating device 15 can also be used as a heater in a heating system.

[0058] The electronic component housing 6C houses the power module 11, the power integration system 12, the current distribution unit 13, the capacitor 14, and the heater control unit 15b. The electronic component housing 6C has a first housing part 61A, a second housing part 64, and a third cover part 65.

[0059] In this embodiment, the first storage portion 61A is part of the outer casing body 61. Therefore, the first storage portion 61A and the cylindrical portion 6d are parts of the same component. Furthermore, the first storage portion 61A is located above the cylindrical portion 6d and is connected to the cylindrical portion 6d. That is, the first storage portion 61A is connected to the motor housing 6A. The first storage portion 61A has a first opening 61h that opens on one side (+D1) in a first direction.

[0060] The first storage portion 61A has a first bottom wall portion 61b, a first side wall portion 61c, and a first flange portion 61f. The first bottom wall portion 61b extends along a plane perpendicular to the first direction D1. The first bottom wall portion 61b is integrally connected to the cylindrical portion 6d. That is, a portion of the first bottom wall portion 61b also functions as part of the cylindrical portion 6d. The first bottom wall portion 61b has an outer surface 61g facing the other side (-D1) of the first direction and a first inner surface 61k facing one side (+D1) of the first direction. The first side wall portion 61c extends from the outer edge of the first bottom wall portion 61b toward one side (+D1) of the first direction D1.

[0061] A first flange portion 61f is provided at the upper end of the first sidewall portion 61c. The first flange portion 61f protrudes away from the first opening portion 61h along a plane perpendicular to the first direction D1. A second receiving portion 64 is securely attached to the first flange portion 61f.

[0062] The second storage section 64 is located above the first storage section 61A. The second storage section 64 is connected to one side (+D1) of the first storage section 61A in a first direction. The second storage section 64 has a second opening 64h that opens to one side (+D1) in the first direction.

[0063] The second storage portion 64 has a second bottom wall portion (bottom wall portion, wall portion) 64b, a second side wall portion 64c, a second flange portion 64d, and a third flange portion 64f. The second bottom wall portion 64b extends along a plane perpendicular to the first direction D1. The second bottom wall portion 64b covers the first opening 61h of the first storage portion 61A. The second bottom wall portion 64b divides the interior space of the first storage portion 61A and the interior space of the second storage portion 64. The second bottom wall portion 64b has a second inner surface 64k facing the other side (-D1) of the first direction and a third inner surface 64s facing one side (+D1) of the first direction. The second side wall portion 64c extends from the outer edge of the second bottom wall portion 64b toward one side (+D1) of the first direction D1.

[0064] The second flange portion 64d and the second bottom wall portion 64b are disposed on the same plane. The second flange portion 64d is located at the lower end of the second side wall portion 64c. The second flange portion 64d extends from the outer edge of the second bottom wall portion 64b in a direction away from the outer side of the second bottom wall portion 64b. When viewed from the first direction D1, the second flange portion 64d is located outside the area surrounded by the second side wall portion 64c. The second flange portion 64d is opposite to the first flange portion 61f in the first direction. The second flange portion 64d is fastened to the first flange portion 61f. A sealing member may also be sandwiched between the first flange portion 61f and the second flange portion 64d.

[0065] A third flange portion 64f is provided at the upper end of the second sidewall portion 64c. The third flange portion 64f protrudes away from the second opening portion 64h along a plane perpendicular to the first direction D1. A third cover member 65 is fastened to the third flange portion 64f.

[0066] The third cover member 65 is plate-shaped, extending along a plane perpendicular to the first direction D1. The third cover member 65 has a fourth inner surface 65s facing the opposite side (-D1) of the first direction. The third cover member 65 is connected to the second receiving portion 64. The third cover member 65 is fastened to the third flange portion 64f using a screw or other fastening tool. Thus, the third cover member 65 covers the second opening portion 64h. Alternatively, a sealing member may be sandwiched between the third flange portion 64f and the third cover member 65.

[0067] The first storage section 61A houses the power module 11, the capacitor 14, and the heater control section 15b. The internal space of the first storage section 61A is surrounded by a first bottom wall 61b, a second bottom wall 64b, and a first side wall 61c. The first inner surface 61k of the first bottom wall 61b and the second inner surface 64k of the second bottom wall 64b face each other in the first direction D1. In this embodiment, the power module 11, the capacitor 14, and the heater control section 15b are fixed to the second inner surface 64k. Furthermore, the heater section 15a is fixed to the outer surface 61g of the first storage section 61A.

[0068] The second storage section 64 houses the power integration system 12 and the current distribution section 13. The internal space of the second storage section 64 is surrounded by a second bottom wall 64b and a second side wall 64c. The third inner surface 64s of the second bottom wall 64b and the fourth inner surface 65s of the third cover member 65 face each other in the first direction D1. In this embodiment, the power integration system 12 and the current distribution section 13 are fixed to the third inner surface 64s.

[0069] A flow path 90 is provided in the housing connector 6. The flow path 90 is a path for fluid flow. A portion of the flow path 90 is formed by an opening provided in the housing connector 6. Another portion of the flow path 90 is formed by the inner surface of a recess provided in the housing connector 6 and a component covering the recess. In this specification, the flow path 90 does not necessarily represent a single circulation path, and may include multiple circulation paths. When the flow path 90 has multiple circulation paths, the fluid flowing in each circulation path can be the same type of fluid or different types of fluid. The fluid flowing in the flow path 90 is, for example, water, oil, or an aqueous solution of ethylene glycol.

[0070] The flow path 90 of this embodiment includes an intervention flow path section 90A, a connecting flow path section 95, and a fourth flow path section 94. Furthermore, the intervention flow path section 90A includes a first flow path section 91 and a second flow path section 92. That is, the flow path 90 includes a first flow path section 91, a second flow path section 92, a connecting flow path section 95, and a fourth flow path section 94. The first flow path section 91, the second flow path section 92, and the connecting flow path section 95 are disposed in the electronic component housing 6C. The fourth flow path section 94 is disposed in the motor housing 6A.

[0071] The intervening flow path section 90A is the area in flow path 90 disposed between the power module 11 and the power integrated system 12. That is, in this embodiment, the first flow path section 91 and the second flow path section 92 are disposed between the power module 11 and the power integrated system 12.

[0072] According to this embodiment, the flow path 90 has an intervening flow path section 90A located between the power module 11 and the power integrated system 12 in the first direction D1, thus enabling simultaneous cooling of the power module 11 and the power integrated system 12 within the intervening flow path section 90A. Specifically, the intervening flow path section 90A of this embodiment is provided on a second bottom wall section 64b on which the power module 11 and the power integrated system 12 are fixed. Furthermore, other electronic components (current distribution section 13, capacitor 14, and heater control section 15b) are fixed to the second bottom wall section 64b. The fluid flowing in the intervening flow path section 90A cools the second bottom wall section 64b, thereby indirectly cooling the other electronic components (current distribution section 13, capacitor 14, and heater control section 15b).

[0073] In this embodiment, the electronic component housing 6C has a second bottom wall portion 64b located between the power module 11 and the power integrated system 12 in the first direction D1. Furthermore, an intervention flow path portion 90A is provided in the second bottom wall portion 64b. According to this embodiment, the electronic component housing 6C has a second bottom wall portion 64b with the intervention flow path portion 90A, thereby enabling miniaturization of the electronic component housing 6C compared to the case where other components with intervention flow path portions are disposed inside the electronic component housing 6C.

[0074] In this embodiment, the first flow path 91, the second flow path 92, the connecting flow path 95, and the fourth flow path 94 constitute a circulation path. Therefore, the same fluid flows in the first flow path 91, the second flow path 92, the connecting flow path 95, and the fourth flow path 94 in this embodiment. In this embodiment, the fluid flows in each part of the flow path 90 in the order of the second flow path 92, the first flow path 91, the connecting flow path 95, and the fourth flow path 94. In addition, the downstream end of the fourth flow path 94 is connected to the upstream end of the second flow path 92 via a flow path section (not shown). A pump for pressurizing the fluid and a radiator for cooling the fluid may also be provided in this flow path section.

[0075] The first flow path portion 91 and the second flow path portion 92 are disposed on the second bottom wall portion 64b. That is, the first flow path portion 91 and the second flow path portion 92 are disposed on the second receiving portion 64. In this embodiment, the first flow path portion 91 and the second flow path portion 92 extend along the axial direction Y. However, the first flow path portion 91 and the second flow path portion 92 can extend in any direction as long as they extend along a plane perpendicular to the first direction D1.

[0076] In this embodiment, the first flow path portion 91 and the second flow path portion 92 are arranged in a first direction D1. Furthermore, the first flow path portion 91 is located on the opposite side (-D1) of the first direction relative to the second flow path portion 92. In this embodiment, the first flow path portion 91 and the second flow path portion 92 extend along the axial direction Y and are connected to each other at their ends in the axial direction Y. Alternatively, the first flow path portion 91 and the second flow path portion 92 may also extend along the second direction D2, in which case they may also be connected to each other at their ends in the second direction D2. Furthermore, when the first flow path portion 91 and the second flow path portion 92 are part of independent circulation flow paths, different fluids may flow in the first flow path portion 91 and the second flow path portion 92 respectively.

[0077] The first flow path 91 has an opening 91a that opens onto the second inner side surface 64k of the second bottom wall 64b. The opening 91a opens onto the other side (-D1) in the first direction. The power module 11 has a heat sink covering the opening 91a. The heat sink is in contact with the fluid flowing in the first flow path 91. The heat sink preferably has a plurality of fins or pins disposed inside the first flow path 91. The fluid flowing in the first flow path 91 is cooled from the power module 11 by contacting the heat sink. That is, the first flow path 91 cools the power module 11. However, the configuration for cooling the power module 11 using the fluid flowing in the first flow path 91 is not limited to this embodiment.

[0078] As described above, the end of the first flow path 91 opposite to the end connected to the second flow path 92 opens into the side of the second flange 64d facing the first direction (-D1). The end of the first flow path 91 that opens into the second flange 64d is connected to the connecting flow path 95.

[0079] The second flow path 92 has an opening 92a that opens onto the third inner side surface 64s of the second bottom wall 64b. The opening 92a opens to one side (+D1) in the first direction. The opening 92a is covered by the power integration system 12. Fluid flowing in the second flow path 92 contacts the power integration system 12 and cools it. In other words, the second flow path 92 cools the power integration system 12. Furthermore, in this embodiment, the power integration system 12 has a heating element and a housing portion that houses the heating element. Fluid flowing in the second flow path 92 contacts the housing portion of the power integration system 12, cooling the element via the housing portion.

[0080] In the control device 7 of this embodiment, the power module 11 generates more heat than other electronic components. The second flow path 92 is disposed upstream of the first flow path 91. According to this embodiment, after the fluid cooled by the heat sink (not shown) cools the power integrated system 12, which generates relatively little heat, in the second flow path 92, the power module 11, which generates more heat, is cooled in the first flow path 91. According to this embodiment, in the first flow path 91 and the second flow path 92, fluid at an appropriate temperature can flow according to the heat generation of the power integrated system 12 and the power module 11, which are the objects to be cooled, thereby effectively cooling each electronic component as a whole in the flow path 90. Furthermore, the fluid cooled by the heat sink (not shown) can also cool the power integrated system 12, which generates less heat, in the second flow path 92 after cooling the power module 11, which generates more heat, in the first flow path 91. Therefore, the power module 11, which generates more heat, can be cooled more effectively.

[0081] In this embodiment, the flow path 90A includes a first flow path 91 and a second flow path 92. In this embodiment, the fluid flowing in the first flow path 91 cools the power module 11 and the second bottom wall 64b, thereby cooling the power integrated system 12 fixed to the second bottom wall 64b. Similarly, in this embodiment, the fluid flowing in the second flow path 92 cools the power integrated system 12 and the second bottom wall 64b, thereby cooling the power module 11 fixed to the second bottom wall 64b. That is, according to the flow path 90 of this embodiment, the power module 11 and the power integrated system 12 can be effectively cooled by the first flow path 91 and the second flow path 92.

[0082] In this embodiment, the power module 11, the first flow path 91, the second flow path 92, and the power integrated system 12 are arranged in an overlapping manner when viewed from the first direction D1. Therefore, it is possible to prevent the control device 7 from becoming too large in the direction perpendicular to the first direction D1. Furthermore, according to this embodiment, the first flow path 91 is arranged between the second flow path 92, which primarily cools the power integrated system 12, and the power module 11. Therefore, it is possible to prevent the fluid flowing in the second flow path 92 from excessively absorbing heat from the power module 11, thus preventing insufficient cooling of the power integrated system 12. Similarly, according to this embodiment, the second flow path 92 is arranged between the first flow path 91, which primarily cools the power module 11, and the power integrated system 12. Therefore, it is possible to prevent the fluid flowing in the first flow path 91 from excessively absorbing heat from the power integrated system 12, thus preventing insufficient cooling of the power module 11.

[0083] A connecting flow path 95 is provided in the first sidewall portion 61c. That is, the connecting flow path 95 is provided in the first receiving portion 61A. The connecting flow path 95 is formed by a hole provided inside the wall of the first sidewall portion 61c. The connecting flow path 95 extends along the first direction D1. One end of the connecting flow path 95 on one side (+D1) of the first direction opens on the side (+D1) facing the first direction of the first flange portion 61f. The connecting flow path 95 is connected to the first flow path 91 by fastening the first flange portion 61f and the second flange portion 64d. That is, one end of the connecting flow path 95 is connected to the first flow path 91. In addition, the other end of the connecting flow path 95 on the other side (-D1) of the first direction extends to the cylindrical portion 6d and is connected to the fourth flow path 94.

[0084] A fourth flow path 94 is provided in the cylindrical portion 6d. That is, the fourth flow path 94 is provided in the motor housing 6A. In this embodiment, the fourth flow path 94 extends spirally along the axial direction Y with the first axis J1 as the center. The fluid flowing in the fourth flow path 94 cools the motor 2. That is, the fourth flow path 94 cools the motor 2.

[0085] As described above, a portion of the cylindrical portion 6d also functions as the first bottom wall portion 61b of the first storage portion 61A. Therefore, a portion of the fourth flow path portion 94 is also provided in the first bottom wall portion 61b. As a result, the fourth flow path portion 94 cools the internal space of the first storage portion 61A.

[0086] The fourth flow path 94 only needs to cool the motor 2, and is not limited to this embodiment. The motor 2 may also extend axially or circumferentially inside the wall of the cylindrical portion 6d. Alternatively, the fourth flow path 94 may cool the motor 2 by directly applying fluid to it. In this case, the fourth flow path 94 may also be a structure with a nozzle for ejecting fluid toward the motor 2 on the inner wall of the motor housing 6A, or a tube or groove-shaped component disposed in the internal space of the motor housing 6A and having a nozzle for ejecting fluid toward the motor 2.

[0087] In this embodiment, the fourth flow path 94 is connected to the first flow path 91 via the connecting flow path 95. Therefore, the fourth flow path 94 in this embodiment constitutes the same circulation path as the first flow path 91. According to this embodiment, compared to the case where the fourth flow path 94 constitutes a different circulation path than the first flow path 91 and the second flow path 92, the flow path 90 can be simplified, and the overall size of the drive device 1 can be reduced. Furthermore, the fourth flow path 94 can also be connected to the second flow path 92. That is, it is sufficient that at least one of the first flow path 91 and the second flow path 92 is connected to the fourth flow path 94.

[0088] In this embodiment, the power module 11 and the power integration system 12 are located on one side (+D1) of the first direction relative to the motor 2. Conversely, the power module 11 is located on the other side (-D1) of the first direction relative to the power integration system 12. The power module 11 is connected to the motor 2 and supplies power to it. Therefore, as the distance between the power module 11 and the motor 2 increases, the resistance of the connection path (e.g., busbar) between the power module 11 and the motor 2 increases, leading to greater losses during the operation of the drive device 1. According to this embodiment, the power module 11 can be positioned closer to the motor 2 than the power integration system 12, thus reducing the resistance of the connection path between the power module 11 and the motor 2 and minimizing losses in the drive device 1.

[0089] In this embodiment, the power module 11 is located between the intervening flow path 90A and the fourth flow path 94 in the first direction D1. According to this embodiment, the power module 11 can be cooled not only by the intervening flow path 90A but also by the fourth flow path 94, thereby effectively cooling the power module 11. In this embodiment, a gap is provided between the power module 11 and the cylindrical portion 6d on which the fourth flow path 94 is provided. However, a heat sink or similar material with high thermal conductivity can also be sandwiched between the power module 11 and the cylindrical portion 6d to promote heat movement from the power module 11 to the fourth flow path 94.

[0090] According to this embodiment, the electronic component housing 6C has two storage sections (a first storage section 61A and a second storage section 64), one of which houses the power module 11 and the other houses the power integrated system 12. According to this embodiment, the electronic component housing 6C can respectively arrange the power module 11 and the power integrated system 12 in different storage spaces. This can suppress the influence of heat from either the power module 11 or the power integrated system 12 on the operation of the other. Furthermore, in this embodiment, the case where the power module 11 is housed in the first storage section 61A and the power integrated system 12 is housed in the second storage section 64 has been described. However, the above-mentioned effects can be obtained even if the power integrated system 12 is housed in the first storage section 61A and the power module 11 is housed in the second storage section 64. That is, the electronic component housing 6C of this embodiment only needs to have a first storage section 61A for housing one of the power module 11 or the power integrated system 12 and a second storage section 64 for housing the other of the power module 11 or the power integrated system 12.

[0091] Furthermore, according to this embodiment, the second storage portion 64 covers the first opening 61h of the first storage portion 61A, and the third cover member 65 covers the second opening 64h of the second storage portion 64. According to this embodiment, by connecting the first storage portion 61A, the second storage portion 64, and the third cover member 65 along the first direction D1, an electronic component housing 6C with two storage spaces can be easily constructed. Moreover, according to this embodiment, an intervening flow path portion 90A is provided in the second bottom wall portion 64b that covers the first opening 61h of the first storage portion 61A. Therefore, the intervening flow path portion 90A can be disposed between the internal space of the first storage portion 61A and the internal space of the second storage portion 64 without increasing the number of components, thereby cooling the power module 11 and the power integration system 12 disposed in each internal space.

[0092] According to this embodiment, the heater control unit 15b, which is part of the heating device 15, is disposed inside the electronic component housing 6C. Therefore, the heater control unit 15b can be protected by the electronic component housing 6C. Furthermore, by disposing the heater control unit 15b inside the electronic component housing 6C, the heater control unit 15b can be cooled using the flow path 90, thereby improving the reliability of the heating device 15. In this embodiment, only the heater control unit 15b is housed in the electronic component housing 6C. However, the same effect can be obtained even if both the heater unit 15a and the heater control unit 15b are disposed in the electronic component housing 6C.

[0093] In this embodiment, the heater portion 15a of the heating device 15 is fixed to the outer side of the electronic component housing 6C, and is not disposed inside the electronic component housing 6C. According to this embodiment, the heat from the heater portion 15a can be suppressed from affecting the electronic components disposed inside the electronic component housing 6C. In addition, the heater portion 15a of the heating device 15 can be disposed not only on the outer side of the electronic component housing 6C, but also on the outer side of the motor housing 6A or the gear housing 6B.

[0094] In this embodiment, the case where the intervention flow path 90A cools the power module 11 and the power integrated system 12 with voltage regulation function is described. However, the intervention flow path 90A may also replace the power integrated system 12 to cool other electronic components. Here, the electronic component other than the power module 11 cooled by the intervention flow path 90A is referred to as the first electronic component 12. In this embodiment, the first electronic component 12 is the power integrated system 12, but it may also be the current distribution unit 13 or the capacitor 14. That is, the first electronic component 12 can have any of the functions of voltage regulation, current distribution, or capacitor. In addition, the intervention flow path 90A can be any part of the flow path 90 located in the first direction D1 between the power integrated system 12, the current distribution unit 13, and the capacitor 14 and the power module 11.

[0095] In this embodiment, capacitor 14 overlaps with power module 11 in the second direction D2. Additionally, current distribution unit 13 overlaps with first electronic component 12 in the second direction D2. Here, electronic components other than power module 11 and first electronic component 12 that have any function of voltage regulation, current distribution, or capacitor are referred to as second electronic components 13 and 14. Second electronic components 13 and 14 can have any function of voltage regulation, current distribution, or capacitor. That is, second electronic components 13 and 14 can be any one of power integration system 12, current distribution unit 13, and capacitor 14. According to this embodiment, second electronic components 13 and 14 overlap with at least one of power module 11 or first electronic component 12 in the second direction D2. According to this embodiment, second electronic components 13 and 14 are arranged with power module 11 or first electronic component 12 along the second direction D2, thereby suppressing the enlargement of control device 7 in the first direction D1.

[0096] In this embodiment, the control device 7 has a plurality of second electronic components 13, 14. The plurality of second electronic components 13, 14 overlap each other in the first direction D1. According to this embodiment, the plurality of second electronic components 13, 14 are arranged in a configuration that prevents the control device 7 from becoming too large in the second direction D2.

[0097] In this embodiment, the power module 11 and the power integrated system 12 are preferably arranged to extend along a plane perpendicular to the first direction D1, with the first direction D1 as the thickness direction. Furthermore, the intervention flow path 90A preferably extends along a plane perpendicular to the first direction D1. According to this embodiment, the power module 11 and the power integrated system 12 can be overlapped within the intervention flow path 90A over a wider range in the first direction D1, thereby improving the cooling efficiency of the power module 11 and the power integrated system 12. For the same reason, the current distribution section 13 and the capacitor 14 are also preferably arranged to extend along a plane perpendicular to the first direction D1, with the first direction D1 as the thickness direction.

[0098] <Variation Example>

[0099] Hereinafter, variations of the drive device will be described. In the description of each variation, the same reference numerals are used for the same components as those in the previously described embodiments or variations, and their descriptions are omitted.

[0100] Furthermore, in the following variations, the same as in the embodiments described above, the case where the power integration system 12 is the first electronic component 12, and the current distribution unit 13 and capacitor 14 are the second electronic components 13 and 14 will be described. However, the first electronic component can have any function of voltage regulation, current distribution, or capacitor, and can be any one of the power integration system 12, current distribution unit 13, or capacitor 14. Similarly, the second electronic component can be any electronic component other than the first electronic component that has any function of voltage regulation, current distribution, or capacitor, and can be any one of the power integration system 12, current distribution unit 13, or capacitor 14.

[0101] (Variation Example 1)

[0102] Figure 3 This is a cross-sectional schematic diagram of the drive device 101 in Modified Example 1. Similar to the embodiment described above, the drive device 101 in Modified Example 1 includes a motor 2 and a transmission mechanism 3 (in... Figure 3 (omitted) and control device 107. Additionally, the drive unit 101 has a housing connector 106. The housing connector 106 includes a motor housing 6A, a gear housing 6B (in...) Figure 3 (omitted) and electronic component housing 6C. A flow path 190 is provided in the housing connector 106. The flow path 190 has an entry flow path portion 190A and a connection flow path portion 95 provided in the electronic component housing 6C, and a fourth flow path portion 94 provided in the motor housing 6A.

[0103] An intervention flow path 190A is located between the power module 11 and the power integrated system 12. The intervention flow path 190A has a first flow path 191 for cooling the power module 11 and a second flow path 192 for cooling the power integrated system 12. The first flow path 191 and the second flow path 192 are disposed on the second bottom wall portion 64b. In this modified example, the first flow path 191 and the second flow path 192 are arranged in the second direction D2. According to this modified example, compared to the case where the first flow path 191 and the second flow path 192 are overlapped in the first direction D1, the second bottom wall portion 64b can be thinned, thereby enabling the control device 107 to be miniaturized in the first direction D1.

[0104] In this modification, the heater portion 115a and heater control portion 115b of the heating device 115 are housed in the first storage portion 61A of the electronic component housing 6C. That is, according to this modification, the entire heating device 115 is disposed within the internal space of the electronic component housing 6C. If a portion of the heating device 115 is fixed to the outer side of the housing connector 106, it will protrude from the shape of the drive device, potentially leading to a larger drive device. According to this modification, by disposing the heating device 115 inside the electronic component housing 6C, miniaturization of the drive device 101 can be achieved.

[0105] (Variation Example 2)

[0106] Figure 4 This is a cross-sectional schematic diagram of the drive device 201 in Modified Example 2. Similar to the embodiment described above, the drive device 201 in Modified Example 2 includes a motor 2, a transmission mechanism 3 (in... Figure 4 (omitted) and control device 207. Additionally, drive unit 201 has a housing connector 206. Housing connector 206 includes a motor housing 6A, a gear housing 6B (in...) Figure 4 (omitted) and electronic component housing 206C.

[0107] In this modified example, the electronic component housing 206C, in addition to having the same first storage portion 61A, second storage portion 64, and third cover member 65 as in the above embodiment, also has a flow path member 266. The flow path member 266 is disposed inside the first storage portion 61A. The flow path member 266 is plate-shaped, extending along a plane perpendicular to the first direction D1. The flow path member 266 is a so-called water jacket. The side of the power module 11 facing the other side (-D1) of the first direction contacts the flow path member 266. Furthermore, the side of the power module 11 facing the first direction (+D1) contacts the second bottom wall portion 64b. Therefore, the power module 11 is sandwiched between the second bottom wall portion 64b and the flow path member 266 in the first direction D1.

[0108] A flow path 290 is provided in the housing connector 206. In this modified example, the flow path 290, in addition to having the same entry flow path 90A, connecting flow path 95, and fourth flow path 94 as in the above embodiment, also has a third flow path 293. The entry flow path 90A has a first flow path 91 for cooling the power module 11 and a second flow path 92 for cooling the power integrated system 12. The third flow path 293 is provided in the flow path component 266. That is, the third flow path 293 is provided in the electronic component housing 206C.

[0109] The third flow path 293 extends meanderingly inside the flow path component 266. Fluid cooled by a radiator (not shown) flows in the third flow path 293. Thus, the third flow path 293 cools the power module 11. The third flow path 293 can be part of a circulation path formed by other flow paths (first flow path 91, second flow path 92, connecting flow path 95, and fourth flow path 94), or it can be part of a separate circulation path.

[0110] According to this modification, the power module 11 is located between the intervening flow path 90A and the third flow path 293 in the first direction D1. That is, the power module 11 is located between the first flow path 91 and the third flow path 293. Furthermore, the power module 11 is located between the second flow path 92 and the third flow path 293. According to this modification, the power module 11, which generates the most heat among the electronic components of the control device 207, can be cooled from both sides of the first direction D1 by the intervening flow path 90A and the third flow path 293. As a result, the cooling efficiency of the power module 11 can be improved.

[0111] In this modification, the power module 11 and the power integrated system 12 are located on one side (+D1) of the first direction relative to the motor 2. Conversely, the power module 11 is located on the other side (-D1) of the first direction relative to the power integrated system 12. The third flow path 293 is located between the power module 11 and the fourth flow path 94 in the first direction D1. According to this modification, by shielding the motor 2 from heat by the fourth flow path 94 and the third flow path 293, the heat is less likely to be transferred to the power module 11. Therefore, it is possible to prevent the temperature of the power module 11 from becoming too high. Furthermore, according to this modification, by shielding the power module 11 from heat by the fourth flow path 94 and the third flow path 293, the heat is less likely to be transferred to the motor 2. Therefore, it is possible to prevent the temperature of the motor 2 from becoming too high.

[0112] (Variation Example 3)

[0113] Figure 5 This is a cross-sectional schematic diagram of the drive device 301 in Modified Example 3. Similar to the embodiment described above, the drive device 301 in Modified Example 3 includes a motor 2 and a transmission mechanism 3 (in... Figure 5(omitted) and control device 307. Additionally, the drive unit 301 has a housing connector 306. The housing connector 306 includes a motor housing 6A and a gear housing 6B (in... Figure 5 (omitted) and electronic component housing 6C. Electronic component housing 6C has a first storage section 61A, a second storage section 64 and a third cover section 65.

[0114] In this modified example, the first storage section 61A houses the power integrated system 12, the capacitor 14, and the heating device 115. On the other hand, the second storage section 64 houses the power module 11 and the current distribution section 13.

[0115] Similar to the embodiment described above, a flow path 390 is provided in the housing connector 306. The flow path 390 has an entry flow path portion 390A and a connection flow path portion 95 provided in the electronic component housing 6C, and a fourth flow path portion 94 provided in the motor housing 6A.

[0116] An intervention flow path portion 390A is provided on the second bottom wall portion 64b. The intervention flow path portion 390A has a first flow path portion 391 and a second flow path portion 392. The first flow path portion 391 and the second flow path portion 392 are arranged in a first direction D1. In this modified example, the first flow path portion 391 is located on one side (+D1) of the first direction relative to the second flow path portion 392.

[0117] The first flow path 391 has an opening 391a that opens into the third inner side surface 64s of the second bottom wall 64b. The opening 391a is covered by the power module 11. The first flow path 391 cools the power module 11.

[0118] The second flow path 392 has an opening 392a that opens onto the second inner side 64k of the second bottom wall 64b. The opening 392a is covered by the power integration system 12. The second flow path 392 cools the power integration system 12.

[0119] In this modification, the power module 11 and the power integrated system 12 are located on one side (+D1) of the first direction relative to the motor 2. Conversely, the power integrated system 12 is located on the other side (-D1) of the first direction relative to the power module 11. According to this modification, the power module 11 can be positioned further away from the motor 2 than the power integrated system 12, thus suppressing the influence of the motor 2's heat on the operation of the power module 11. Furthermore, the influence of the power module 11's heat on the operation of the motor 2 can also be suppressed.

[0120] (Variation Example 4)

[0121] Figure 6This is a cross-sectional schematic diagram of the drive device 401 in Modified Example 4. Similar to the embodiment described above, the drive device 401 in Modified Example 4 includes a motor 2 and a transmission mechanism 3 (in... Figure 6 (omitted) and control device 407. Additionally, drive unit 401 has a housing connector 406. Housing connector 406 includes a motor housing 6A, a gear housing 6B (in...) Figure 6 (omitted) and electronic component housing 406C. A flow path 90 is provided in the housing connector 406. The flow path 90 has an intervening flow path portion 90A.

[0122] The electronic component housing 406C has a first storage section 61A, a second storage section 464, and a third cover member 65. The first storage section 61A houses the power module 11 and the capacitor 14. On the other hand, the second storage section 464 houses the power integration system 12, the current distribution section 13, and the heating device 115.

[0123] The second storage section 464 has a second bottom wall section 464b that covers the first opening 61h of the first storage section 61A. In this modified example, the second bottom wall section 464b has a first bottom plate section 464g, a second bottom plate section 464h, a third bottom plate section 464i, a first step section 464m, and a second step section 464n.

[0124] The first base plate portion 464g, the second base plate portion 464h, and the third base plate portion 464i are plate-shaped, extending along a plane perpendicular to the first direction D1. An intervening flow path portion 90A is provided in the first base plate portion 464g. The second base plate portion 464h is located on the opposite side of the first direction (-D1) and the opposite side of the second direction (-D2) relative to the first base plate portion 464g. The third base plate portion 464i is located on one side of the first direction (+D1) and the opposite side of the second direction (-D2) relative to the first base plate portion 464g and the second base plate portion 464h. A first stepped portion 464m connects the first base plate portion 464g and the second base plate portion 464h. A second stepped portion 464n connects the second base plate portion 464h and the third base plate portion 464i.

[0125] In this modified example, the power module 11 is fixed to the side of the first base plate 464g facing the first direction (-D1). The power integration system 12 is fixed to the side of the first base plate 464g facing the first direction (+D1). The current distribution unit 13 is fixed to the side of the second base plate 464h facing the first direction (+D1). The capacitor 14 is fixed to the side of the third base plate 464i facing the first direction (-D1).

[0126] In this modified example, the second electronic components 13 and 14 (current distribution section 13 and capacitor 14) overlap with the intervention flow path section 90A in the second direction D2. According to this modified example, the second electronic components 13 and 14 can be fixed to the component provided with the intervention flow path section 90A and are close to the intervention flow path section 90A in the second direction D2. Therefore, the second electronic components 13 and 14 can be easily cooled by the intervention flow path section 90A.

[0127] In this modification, the current distribution section 13 overlaps with the power module 11 and the power integrated system 12 in the second direction D2. Additionally, the capacitor 14 overlaps with the power module 11 and the power integrated system 12 in the second direction D2. That is, the second electronic components 13 and 14 overlap with at least one of the power module 11 or the first electronic component 12 in the second direction D2. According to this modification, the second electronic components 13 and 14 are arranged with the power module 11 or the first electronic component 12 along the second direction D2, thereby preventing the control device 407 from becoming too large in the first direction D1.

[0128] In this modified example, the control device 407 has a plurality of second electronic components 13, 14, which overlap with each other in the second direction D2. According to this modified example, the plurality of second electronic components 13, 14 are arranged in the second direction D2, thereby preventing the control device 407 from becoming too large in the first direction D1.

[0129] (Variation Example 5)

[0130] Figure 7 This is a cross-sectional schematic diagram of the drive device 501 in Modified Example 5. Similar to the embodiment described above, the drive device 501 in Modified Example 5 includes a motor 2 and a transmission mechanism 3 (in... Figure 7 (omitted) and control device 507. Additionally, drive unit 501 has a housing connector 506. Housing connector 506 includes a motor housing 6A, a gear housing 6B (in...) Figure 7 (omitted) and electronic component housing 506C. A flow path 90 is provided in the housing connector 506. The flow path 90 has an intervening flow path portion 90A.

[0131] The electronic component housing 506C, like the embodiment described above, includes a first storage section 61A, a second storage section 64, and a third cover member 65. The second storage section 64 is located on one side (+D1) of the first storage section 61A in a first direction, covering the first opening 61h of the first storage section 61A. The third cover member 65 is located on one side (+D1) of the second storage section 64 in the first direction, covering the second opening 64h of the second storage section 64. The first storage section 61A houses the power module 11 and the capacitor 14. Conversely, the second storage section 64 houses the power integration system 12 and the current distribution section 13.

[0132] In this modified example, the power module 11 is fixed to the second inner side 64k of the second base plate portion 64b. The power integration system 12 is fixed to the third inner side 64s of the second base plate portion 64b. The current distribution portion 13 is fixed to the fourth inner side 65s of the third cover member 65. The capacitor 14 is fixed to the first inner side 61k of the first bottom wall portion 61b.

[0133] In this modified example, the second electronic components 13 and 14 (current distribution section 13 and capacitor 14) overlap with the intervention flow path section 90A in the first direction D1. According to this modified example, the second electronic components 13 and 14 and the intervention flow path section 90A can be arranged in the first direction D1, and the drive device 501 can be miniaturized in the second direction D2.

[0134] In this modification, the current distribution unit 13 overlaps with the power module 11 and the power integrated system 12 in the first direction D1. Additionally, the capacitor 14 overlaps with the power module 11 and the power integrated system 12 in the first direction D1. That is, the second electronic components 13 and 14 overlap with at least one of the power module 11 or the first electronic component 12 in the first direction D1. According to this modification, the second electronic components 13 and 14 are arranged with the power module 11 or the first electronic component 12 along the first direction D1, thereby preventing the control device 507 from becoming too large in the second direction D2.

[0135] In this modification, the control device 507 has a plurality of second electronic components 13, 14, which overlap each other in the first direction D1. According to this modification, the plurality of second electronic components 13, 14 are arranged in a manner that prevents the control device 507 from becoming too large in the second direction D2.

[0136] (Variation Example 6)

[0137] Figure 8 This is a cross-sectional schematic diagram of the drive device 601 in Modified Example 6. Similar to the embodiment described above, the drive device 601 in Modified Example 6 includes a motor 2 and a transmission mechanism 3 (in... Figure 8(omitted) and control device 607. Additionally, drive unit 601 has a housing connector 606. Housing connector 606 includes a motor housing 6A, a gear housing 6B (in...) Figure 8 (omitted) and electronic component housing 606C.

[0138] The electronic component housing 606C has a first storage portion 61A, a second storage portion 664, and a flow path component (wall portion) 669. The second storage portion 664 has a second opening portion 664h that opens to the other side (-D1) in the first direction. The second storage portion 664 has a second bottom wall portion 664b, a second side wall portion 664c, and a second flange portion 664d. The second bottom wall portion 664b extends along a plane perpendicular to the first direction D1. The second side wall portion 664c extends from the outer edge of the second bottom wall portion 664b toward the other side (-D1) in the first direction. The second flange portion 664d is provided at the lower end of the second side wall portion 664c. The second flange portion 664d protrudes away from the second opening portion 664h along a plane perpendicular to the first direction D1.

[0139] The flow path component 669 is plate-shaped, extending along a plane perpendicular to the first direction D1. The flow path component 669 is a so-called water jacket. The flow path component 669 is located between the first receiving portion 61A and the second receiving portion 664 in the first direction D1. The flow path component 669 covers the first opening 61h and the second opening 664h. The flow path component 669 is fastened to the first flange portion 61f and the second flange portion 664d. A sealing component may also be sandwiched between the flow path component 669 and the first flange portion 61f, and between the flow path component 669 and the second flange portion 664d. The flow path component 669 defines the internal space of the electronic component housing 606C in the first direction D1.

[0140] The first storage section 61A houses the power module 11 and the capacitor 14. The second storage section 664 houses the power integration system 12, the current distribution section 13, and the heating device 115. The power module 11 and the capacitor 14 are fixed to the flow path component 669. On the other hand, the power integration system 12, the current distribution section 13, and the heating device 115 are fixed to the second bottom wall section 664b. Furthermore, the power integration system 12 is in contact with the flow path component 669. In addition, the flow path component 669 is located between the power module 11 and the power integration system 12 in the first direction D1.

[0141] A flow path 690 is provided in the housing connector 606. In this modified example, the flow path 690 has an intervening flow path portion 690A and a fourth flow path portion 94. The intervening flow path portion 690A is provided in the flow path component 669. That is, the intervening flow path portion 690A is provided in the electronic component housing 606C. The fourth flow path portion 94 is provided in the motor housing 6A. The intervening flow path portion 690A and the fourth flow path portion 94 can be parts of a continuous circulation path or parts of an independent circulation path.

[0142] The intervention flow path section 690A extends meanderingly within the flow path component 669. Fluid cooled by a heat sink (not shown) flows within the intervention flow path section 690A. The power module 11 is in contact with the surface of the flow path component 669 on the other side (-D1) in the first direction, and the power integration system 12 is in contact with the surface of the flow path component 669 on one side (+D1) in the first direction. The intervention flow path section 690A cools the power module 11 and the power integration system 12. According to this modification, the power module 11 and the power integration system 12 can be effectively cooled using the plate-shaped flow path component 669.

[0143] The embodiments of this utility model have been described above. However, the structures and combinations thereof in the embodiments are merely examples. Without departing from the spirit of this utility model, additions, omissions, substitutions, and other modifications to the structures are possible. Furthermore, this utility model is not limited to the embodiments described.

[0144] In particular, the structure of the control device shown in the above-described embodiments and their variations is merely one example. The control device can be any device that has at least a power module, or it can have any other electronic components.

[0145] In the above embodiments, the case where the drive device has a transmission mechanism has been described. However, the drive device may also have only a motor and a control device without a transmission mechanism.

[0146] Alternatively, this technology can adopt the following structure.

[0147] (1) A control device for controlling a motor, characterized in that the control device comprises: a power module; a first electronic component having any of the functions of voltage adjustment, current distribution or capacitor; and a housing for housing the power module and the first electronic component, wherein a flow path is provided on the housing, the flow path having an intervening flow path portion located in a first direction between the power module and the first electronic component.

[0148] (2) The control device according to (1) is characterized in that the intervention flow path section has: a first flow path section that cools the power module; and a second flow path section that cools the first electronic component.

[0149] (3) The control device according to (2) is characterized in that the first flow path section and the second flow path section are arranged in the first direction.

[0150] (4) The control device according to (2) is characterized in that the direction perpendicular to the first direction is set as the second direction, and the first flow path and the second flow path are arranged in the second direction.

[0151] (5) The control device according to any one of (1) to (4), characterized in that the flow path further includes a third flow path section, and in the first direction, the power module is located between the intervention flow path section and the third flow path section.

[0152] (6) The control device according to any one of (1) to (5), characterized in that the control device has a second electronic component housed in the housing, the second electronic component having any function of voltage adjustment, current distribution or capacitor, the direction perpendicular to the first direction is set as the second direction, and the second electronic component overlaps with the intervention flow path in the first direction or the second direction.

[0153] (7) The control device according to any one of (1) to (5), characterized in that the control device has a second electronic component housed in the housing, the second electronic component having any function of voltage adjustment, current distribution or capacitor, the direction perpendicular to the first direction is designated as the second direction, and the second electronic component overlaps with at least one of the power module or the first electronic component in the first direction or the second direction.

[0154] (8) The control device according to (6) or (7) is characterized in that the control device has a plurality of the second electronic components.

[0155] (9) The control device according to (8) is characterized in that a plurality of the second electronic components overlap each other in the first direction or the second direction.

[0156] (10) The control device according to any one of (1) to (9), characterized in that the housing has a wall portion located between the power module and the first electronic component in the first direction, and the intervention flow path portion is disposed on the wall portion.

[0157] (11) The control device according to any one of (1) to (10) is characterized in that the control device has a heating device having a heater part and a control part for controlling the heater part, the control part being housed in the housing.

[0158] (12) A drive device, characterized in that the drive device comprises: a control device as described in any one of (1) to (11); the motor; and a motor housing that houses the motor, the housing being interconnected with the motor housing.

[0159] (13) The driving device according to (12) is characterized in that the power module and the first electronic component are located on one side of the first direction relative to the motor, and the power module is located on the other side of the first direction relative to the first electronic component.

[0160] (14) The driving device according to (12) is characterized in that the power module and the first electronic component are located on one side of the first direction relative to the motor, and the first electronic component is located on the other side of the first direction relative to the power module.

[0161] (15) The drive device according to any one of (12) to (14), characterized in that the flow path comprises: a first flow path portion for cooling the power module; a second flow path portion for cooling the first electronic component; and a fourth flow path portion disposed in the motor housing for cooling the motor, the intervention flow path portion having the first flow path portion and the second flow path portion, wherein the power module is located between the intervention flow path portion and the fourth flow path portion in the first direction.

[0162] (16) The driving device according to (15) is characterized in that at least one of the first flow path section and the second flow path section is connected to the fourth flow path section.

[0163] (17) The drive device according to (15) or (16) is characterized in that the power module and the first electronic component are located on one side of the first direction relative to the motor, the power module is located on the other side of the first direction relative to the first electronic component, and the flow path has a third flow path portion located between the power module and the fourth flow path portion in the first direction.

[0164] (18) The drive device according to any one of (12) to (17), characterized in that the housing has: a first receiving portion connected to the motor housing for receiving one of the power module or the first electronic component; a second receiving portion connected to one side of the first receiving portion in the first direction for receiving the other of the power module or the first electronic component; and a cover portion connected to the second receiving portion, the first receiving portion having a first opening on one side in the first direction, the second receiving portion having: a bottom wall portion covering the first opening; and a second opening on one side in the first direction, the cover portion covering the second opening, and the intervention flow path portion disposed on the bottom wall portion.

Claims

1. A control device for controlling a motor, characterized in that, The control device has: Power module; A first electronic component, which has any function in voltage regulation, current distribution, or capacitor; and The housing contains the power module and the first electronic component. A flow path is provided on the outer casing. The flow path has an intervening flow path portion located in a first direction between the power module and the first electronic component.

2. The control device according to claim 1, characterized in that, The intervention flow path section has: A first flow path section, which cools the power module; and The second flow path cools the first electronic component.

3. The control device according to claim 2, characterized in that, The first flow path and the second flow path are arranged in the first direction.

4. The control device according to claim 2, characterized in that, The direction perpendicular to the first direction is defined as the second direction. The first flow path and the second flow path are arranged in the second direction.

5. The control device according to claim 1, characterized in that, The flow path also includes a third flow path section. In the first direction, the power module is located between the intervention flow path and the third flow path.

6. The control device according to claim 1, characterized in that, The control device has a second electronic component housed within the casing. The second electronic component has any of the functions of voltage regulation, current distribution, or capacitor. The direction perpendicular to the first direction is defined as the second direction. The second electronic component overlaps with the intervention flow path in the first direction or the second direction.

7. The control device according to claim 1, characterized in that, The control device has a second electronic component housed within the casing. The second electronic component has any of the functions of voltage regulation, current distribution, or capacitor. The direction perpendicular to the first direction is defined as the second direction. The second electronic component overlaps with at least one of the power module or the first electronic component in the first direction or the second direction.

8. The control device according to claim 6 or 7, characterized in that, The control device has multiple of the second electronic components.

9. The control device according to claim 8, characterized in that, The plurality of the second electronic components overlap each other in the first direction or the second direction.

10. The control device according to claim 1, characterized in that, The housing has a wall portion located between the power module and the first electronic component in the first direction. The intervention flow path is disposed on the wall portion.

11. The control device according to claim 1, characterized in that, The control device includes a heating unit, which has a heater section and a control section for controlling the heater section. The control unit is housed within the outer casing.

12. A driving device, characterized in that, The drive unit has: The control device according to any one of claims 1 to 11; The motor; and Motor housing, which houses the motor. The outer casing is connected to the motor casing.

13. The driving device according to claim 12, characterized in that, The power module and the first electronic component are located on one side of the motor in the first direction. The power module is located on the opposite side of the first direction relative to the first electronic component.

14. The driving device according to claim 12, characterized in that, The power module and the first electronic component are located on one side of the motor in the first direction. The first electronic component is located on the opposite side of the first direction relative to the power module.

15. The driving device according to claim 12, characterized in that, The flow path includes: The first flow path section cools the power module; A second flow path section cools the first electronic component; and The fourth flow path, which is disposed in the motor housing, cools the motor. The intervention flow path section has a first flow path section and a second flow path section. In the first direction, the power module is located between the intervention flow path and the fourth flow path.

16. The driving device according to claim 15, characterized in that, At least one of the first flow path section and the second flow path section is connected to the fourth flow path section.

17. The driving device according to claim 15, characterized in that, The power module and the first electronic component are located on one side of the motor in the first direction. The power module is located on the opposite side of the first electronic component in the first direction. The flow path has a third flow path located between the power module and the fourth flow path in the first direction.

18. The driving device according to claim 12, characterized in that, The outer casing has: A first storage section is connected to the motor housing and stores one of the power module or the first electronic component. The second storage section is connected to one side of the first storage section in the first direction, and stores the power module or the other of the first electronic components; as well as The cover, which connects to the second storage section, The first storage portion has a first opening on one side in the first direction. The second storage section has: The bottom wall portion covers the first opening; as well as The second opening is located on one side in the first direction. The cover portion covers the second opening portion. The intervention flow path is disposed on the bottom wall.

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