Assembly

Abstract

The invention provides an assembly which is a structure reflecting the utilization mode of a fiber body based on the technical concept of cooling by using the turbulence effect. The assembly has a coolant, an electrical circuit, and a fibrous body. The circuit is disposed in a liquid flow path of the cooling liquid, and supplies the liquid flow passing through the fiber body to the circuit.

Description

Technical Field

[0001] The invention relates to an assembly. Background Art

[0002] Patent Document 1 discloses a cooling component in which a metal fiber sheet is stored in a storage body connected to a heat generating body, and a refrigerant introduced into the storage body absorbs heat conducted from the heat generating body to the metal fiber sheet. The metal fiber sheet is composed of copper fibers or aluminum fibers with high thermal conductivity, and can be effectively cooled by the refrigerant.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-9433

[0006] Problems to be solved by the invention

[0007] The inventors have conducted intensive research and found that when the coolant passes through the fiber, turbulence is generated, and cooling is promoted by the turbulence effect. Furthermore, it is found that when the coolant passes through the surface of the fiber, turbulence is generated due to the disorder of the fiber surface, and cooling is also promoted by the turbulence effect.

[0008] This means that in some cases, the cooling performance can be improved regardless of the material of the fiber body, which means that a completely different technical concept from the technical concept described in Patent Document 1, that is, cooling using the thermal conductivity of the metal fiber sheet, can be used to cool the fiber body. Therefore, it is desirable to provide a component with a new structure that reflects the way of using the fiber body based on the technical concept of cooling using the turbulent effect. Summary of the invention

[0009] The present invention has been made in view of such a problem, and an object of the present invention is to provide a structure that reflects a method of utilizing a fiber body based on a technical concept of cooling by utilizing a turbulent flow effect.

[0010] A module according to one aspect of the present invention comprises a cooling liquid, an electric circuit, and a fiber body. The electric circuit is disposed in a liquid flow path of the cooling liquid, and the liquid flow passing through the fiber body is supplied to the electric circuit.

[0011] Effects of the Invention

[0012] According to this embodiment, the cooling efficiency of the circuit can be improved by utilizing the turbulent flow effect of the liquid flow passing through the fiber body. Furthermore, by adopting the method of passing through the fiber body as the turbulent flow generation method, the fiber body can also be given a pollutant capture function. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic structural diagram of the components of this embodiment.

[0014] Figure 2 This is a cross-sectional view showing the main parts of the inverter.

[0015] Figure 3 It is a diagram showing an inverter according to a first modification.

[0016] Figure 4 This is a diagram showing the fiber body arranged on the inverter as viewed from above.

[0017] Figure 5 It is a diagram showing an inverter according to a second modification.

[0018] Figure 6 This is a diagram showing the fiber body arranged on the inverter as viewed from above. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0020] Figure 1 It is a schematic structural diagram of the component 100 of this embodiment. Figure 2 1 is a cross-sectional view showing a main part of the inverter 10. Figure 1 In the figure, regarding the rotating electric machine 20 and the reducer 30, the illustration of the rotor and stator of the rotating electric machine 20, the reduction gear mechanism of the reducer 30, etc. is omitted, and the oil reservoir 21b of the rotating electric machine 20 and the oil reservoir 31b of the reducer 30 are schematically shown in cross section.

[0021] The assembly 100 is mounted on, for example, an electric vehicle that uses a rotating electric machine 20 as a driving source. The assembly 100 includes: an inverter 10, a rotating electric machine 20, a speed reducer 30, and a cooling device 50. The inverter 10 includes a housing 11, a circuit 12, and a fiber body 13. The housing 11 is an inverter housing that accommodates the circuit 12. Inside the housing 11 is an inverter housing interior S that serves as a space for accommodating the circuit 12. The housing 11 is made of, for example, an aluminum alloy. The housing 11 may also include a portion that is made of, for example, resin. The housing 11 includes a box-shaped portion 111 and a plate-shaped portion 112. The box-shaped portion 111 has a box-shaped shape with one side open, and the plate-shaped portion 112 blocks the opening of the box-shaped portion 111. The housing 11 is configured so that the plate-shaped portion 112 forms the lower surface in the direction of gravity.

[0022] The housing 11 has an inlet 11a and a discharge port 11b. The inlet 11a penetrates the side wall of the housing 11 (the side wall of the box-shaped portion 111). The discharge port 11b penetrates the bottom wall (the plate-shaped portion 112) of the housing 11. The oil OL is introduced into the housing 11 through the inlet 11a, and the oil OL in the housing 11 is discharged from the discharge port 11b. The discharge port 11b is provided at a position where the circuit 12 is arranged in the flow (liquid flow) of the oil OL supplied from the inlet 11a into the housing 11. A plurality of discharge ports 11b may be provided. The oil OL is equivalent to the coolant.

[0023] The circuit 12 is provided in the housing 11, that is, in the inverter housing S. The circuit 12 includes a substrate 121 and a circuit portion 122. Figure 2 , the circuit portion 122 is indicated by being surrounded by a double-dashed line. The substrate 121 is a printed substrate, and is disposed on the bottom wall of the housing 11. The circuit portion 122 is mounted on the substrate 121. The circuit portion 122 is electrically connected to the substrate 121 by being connected to a circuit pattern of the substrate 121. The circuit portion 122 is disposed on the surface direction side of the substrate 121. The gravity direction corresponds to the surface direction, and the circuit portion 122 is disposed on the upper side of the gravity direction of the substrate 121, thereby being disposed on the surface direction side of the substrate 121. The surface direction side in the case where the gravity direction corresponds to the surface direction may be the lower side in the gravity direction.

[0024] The circuit part 122 includes: a semiconductor element 122a, a wire 122b, a lead frame 122c, and a molded resin 122d. The semiconductor element 122a is, for example, a power element, such as an IGBT or a power MOSFET. A plurality of semiconductor elements 122a may be provided, for example, along Figure 2 The inner and front direction (with Figure 2 The semiconductor element 122a is electrically connected to the lead frame 122c via the wire 122b. The semiconductor element 122a is disposed in the molding resin 122d and sealed by the molding resin 122d.

[0025] The heat dissipation of the semiconductor element 122a is performed, for example, via the molded resin 122d. On the other hand, the lead frame 122c protrudes from the molded resin 122d. Therefore, the heat dissipation from the semiconductor element 122a can also be promoted via the lead frame 122c. The lead frame 122c constitutes a heat dissipation promotion portion that promotes the heat dissipation from the semiconductor element 122a to the outside of the molded resin 122d. In addition to the lead frame 122c, the circuit portion 122 may also have a heat dissipation component that promotes the heat dissipation from the semiconductor element 122a to the outside of the molded resin 122d as a heat dissipation promotion portion.

[0026] The electric circuit 12 including the circuit portion 122 is cooled by the oil OL supplied into the housing 11. Since the oil OL has insulating properties, the oil OL itself does not particularly deteriorate the insulating state of the electric circuit 12.

[0027] The fiber body 13 is provided in the housing 11 so as to be housed in the inverter housing S together with the circuit 12. The fiber body 13 can be made of, for example, a metal or carbon containing an alloy as a material. Other materials can also be used for the fiber body 13. The fiber body 13 has a plate-like shape. The fiber body 13 is arranged between the inlet 11a and the circuit 12 in the flow direction of the oil OL from the inlet 11a toward the outlet 11b.

[0028] The fiber body 13 divides the interior of the housing 11 into a space connected to the inlet 11a and a space provided with the circuit 12 and connected to the outlet 11b. The fiber body 13 is arranged so that these spaces are in the horizontal direction ( Figure 2 The horizontal direction perpendicular to the direction of gravity corresponds to the horizontal direction. The direction of gravity corresponds to the vertical direction.

[0029] The introduction port 11a overlaps with the fiber body 13 when viewed in the surface direction of the fiber body 13. When viewed in this surface direction, the fiber body 13 overlaps with the circuit 12 and the upper space of the circuit 12 in the housing 11 (the remaining space in the longitudinal direction in the housing 11 when viewed from the circuit 12). The discharge port 11b is offset from the circuit 12 when viewed in the surface direction of the substrate 121.

[0030] Overlapping when viewed in a specified direction means overlapping in the specified direction, which means that multiple elements (components, parts, etc.) are arranged in the specified direction. Therefore, when a plurality of elements are illustrated in the accompanying drawings as being arranged in a specified direction, it can be regarded as an article in the specification that describes the overlapping of multiple elements when viewed in the specified direction. In addition, offset when viewed in a specified direction means that multiple elements are not arranged in the specified direction. Therefore, when a plurality of elements are illustrated in the accompanying drawings as being not arranged in the specified direction, it can be regarded as an article in the specification that describes the offset of multiple elements when viewed in the specified direction.

[0031] The rotating electric machine 20 is controlled by the inverter 10 and generates power. The power generated by the rotating electric machine 20 is transmitted to the driving wheels of the vehicle via the speed reducer 30. The rotating electric machine 20 has a housing 21. The housing 21 has an inlet 21a and an oil reservoir 21b, and accommodates the rotor and stator of the rotating electric machine 20. The inverter 10 is set on the housing 21 from the outside. The inverter 10 is set on the housing 21 from the side.

[0032] The introduction port 21a penetrates the upper wall of the housing 21, and communicates the inside and outside of the housing 21. The oil OL is introduced into the housing 21 through the introduction port 21a. The introduced oil OL falls under the action of gravity, and after lubricating the rotor and cooling the stator, it is stored in the oil reservoir 21b. A part of the stator can be arranged in the oil reservoir 21b, thereby also being able to use the oil OL stored in the oil reservoir 21b for cooling the stator.

[0033] The speed reducer 30 reduces the speed of the input rotation from the rotating electric machine 20 and outputs the speed reducer 30. The speed reducer 30 has a housing 31. The housing 31 has a discharge port 31a and an oil reservoir 31b, and accommodates a reduction gear mechanism. The housing 31 is integrated with the housing 21 by bolts, for example, and together with the housing 21, constitutes a housing 40 of the rotating electric machine 20 and the speed reducer 30.

[0034] The housing 40 has a communication port 41 that connects the oil reservoir 21b in the housing 21 with the oil reservoir 31b in the housing 31. Therefore, the oil OL can be introduced from the oil reservoir 21b to the oil reservoir 31b through the communication port 41. The wall provided with the communication port 41 is constituted by a part of the housing 21, for example.

[0035] The oil reservoir 31b stores the oil OL introduced from the oil reservoir 21b. The oil OL stored in the oil reservoir 31b is stirred up by rotating parts such as gears and used for lubrication of the reduction gear mechanism. The oil OL is discharged from the oil reservoir 31b through the discharge port 31a from the housing 31. The speed reducer 30 corresponds to a power transmission mechanism.

[0036] The cooling device 50 includes an oil pump 51, an oil cooler 52, and a connecting passage 53. The oil pump 51 has a suction port 51a and a discharge port 51b, and pumps the oil OL. The discharge port 51b is connected to the oil cooler 52, and the oil cooler 52 cools the oil OL pumped by the oil pump 51. The oil pump 51 is equivalent to a pump.

[0037] The connection passage 53 is branched from the discharge port 51b of the oil pump 51 through the oil cooler 52 and connected to the inverter 10 and the rotary electric machine 20. The discharge port 51b is branched and connected to the introduction port 11a and the introduction port 21a through the connection passage 53. The connection passage 53 is also connected to the suction port 51a of the oil pump 51 after the discharge port 11b of the inverter 10 and the discharge port 31a of the speed reducer 30 are merged.

[0038] Thus, a first circulation path C1 and a second circulation path C2 are formed in the assembly 100. The first circulation path C1 is a circulation path in which the oil OL passes through the oil cooler 52 and the inverter 10 from the oil pump 51 in sequence and returns to the oil pump 51. The second circulation path C2 is a circulation path in which the oil OL passes through the oil cooler 52, the rotary electric machine 20 and the speed reducer 30 from the oil pump 51 in sequence and returns to the oil pump 51. The first circulation path C1 corresponds to a liquid flow path.

[0039] In the first circulation path C1, the oil OL introduced into the housing 11 through the introduction port 11a passes through the fiber body 13 and is supplied to the circuit 12. Therefore, the assembly 100 has the introduction port 11a for the oil OL upstream of the fiber body 13. In addition, the oil OL supplied to the circuit 12 through the fiber body 13 is then discharged from the discharge port 11b. Therefore, the assembly 100 has the discharge port 11b for the oil OL downstream of the fiber body 13.

[0040] When the oil OL passes through the fiber body 13, a turbulent flow TF is generated, and the flow of the oil OL is disturbed around the circuit 12 including the upper space of the circuit 12. As a result, the oil OL is more likely to absorb more heat from the circuit 12 than when the turbulent flow TF is not generated, thereby promoting the heat dissipation from the circuit 12 to the oil OL. That is, the cooling of the circuit 12 can be promoted by utilizing the turbulent effect generated by the oil OL passing through the fiber body 13. In addition, the circuit 12 including the circuit part 122 is arranged in the first circulation path C1, that is, in the flow (liquid flow) of the oil OL in the first circulation path C1, so that it is directly cooled by the oil OL. As a result, for example, compared with the case where the circuit part 122 is cooled via the substrate 121, a higher cooling effect can be obtained.

[0041] In the second circulation path C2, oil OL is introduced into the housing 40 through the introduction port 21a and discharged to the outside of the housing 40 through the discharge port 31a. The discharged oil OL merges with the oil OL discharged from the discharge port 11b at the confluence point P1 of the first circulation path C1 and the second circulation path C2 and is sucked into the oil pump 51.

[0042] That is, in the assembly 100, the downstream points of the rotary electric machine 20 and the speed reducer 30 and the downstream points of the electric circuit 12 merge at a merging point P1 and are sucked into the suction port 51a of the oil pump 51. The merging point P1 corresponds to these downstream points.

[0043] The oil OL sucked into the oil pump 51 is pumped again and distributed to the inverter 10 and the rotary electric machine 20 at the branch point P2 between the first circulation path C1 and the second circulation path C2. Therefore, the oil OL supplied to the inverter 10 includes the oil OL flowing in the housing 40, that is, the rotary electric machine 20 and the speed reducer 30.

[0044] On the other hand, metal contaminants 60 such as metal flakes and metal powder are generated from bearings and gears in the rotating electrical machine 20 and the speed reducer 30, and the metal contaminants 60 are a major factor that reduces the insulation of the oil OL. Therefore, a filter is provided upstream of the oil pump 51, and the oil OL that has passed through the filter can be introduced into the oil pump 51. However, if the oil OL mixed with the metal contaminants 60 is supplied to the circuit 12 in the inverter 10, the insulation state of the circuit 12 will deteriorate.

[0045] In the present embodiment, the oil OL that has passed through the fiber body 13 is supplied to the circuit 12, and the contaminants 60 mixed in the oil OL are captured by the fiber body 13. Therefore, even if the oil OL is shared by the inverter 10, the rotary electric machine 20, and the speed reducer 30, it is possible to suppress the situation where the circuit 12 is affected, such as the insulation state of the circuit 12 being deteriorated due to the metal contaminants 60 mixed in the oil OL.

[0046] In the first circulation path C1, the oil OL flows from the oil pump 51 toward the fiber body 13, and the oil OL flows from the circuit 12 toward the oil pump 51. In this case, the suction force of the oil pump 51 acts upstream of the oil pump 51, that is, on the suction port 51a side.

[0047] Therefore, in the assembly 100, it is possible to suppress the oil OL from flowing back toward the circuit 12 from the side opposite to the side where the fiber body 13 is provided. As a result, it is possible to suppress the oil OL mixed with the contaminant 60 from being supplied to the circuit 12 in the form of backflow in the first circulation path C1. In addition, in this case, in order to avoid the backflow, an option of not additionally providing a fiber body (the same fiber body as the fiber body 13) as a filter on the downstream side of the circuit 12 is also available. As a result, an option of reducing the number of components is also provided.

[0048] Next, the main effects of this embodiment will be described.

[0049] (1) The assembly 100 includes: oil OL, an electric circuit 12, and a fiber body 13. The electric circuit 12 is arranged in a first circulation path C1 of the oil OL. The oil OL that has passed through the fiber body 13 is supplied to the electric circuit 12. According to such a structure, the cooling efficiency of the electric circuit 12 can be improved by utilizing the turbulent flow effect of the oil OL that has passed through the fiber body 13. Furthermore, by adopting a method of passing the oil OL through the fiber body 13 as a method of generating turbulent flow, the fiber body 13 can also be provided with a function of capturing pollutants 60.

[0050] (2) In the first circulation path C1, the oil OL flows from the oil pump 51 toward the fiber body 13, and the oil OL flows from the circuit 12 toward the oil pump 51. According to such a structure, it is possible to suppress the oil OL from flowing back toward the circuit 12 from the side opposite to the side where the fiber body 13 is provided. Therefore, even if the contaminant 60 is mixed in the oil OL, it is possible to suppress the oil OL mixed with the contaminant 60 from being supplied to the circuit 12 in the form of backflow in the first circulation path C1. In addition, in this case, in order to avoid the backflow, an option of not additionally providing a fiber body as a filter on the downstream side of the circuit 12 can also be selected. As a result, an option of reducing the number of components is also provided.

[0051] (5) The assembly 100 includes the rotating electric machine 20 and the speed reducer 30. The oil OL is used to lubricate the rotating electric machine 20 and the speed reducer 30. According to such a structure, by sharing the oil OL, the oil pump 51 is shared in the inverter 10 and the rotating electric machine 20 and the speed reducer 30, and the cooling circuit structure including the cooling device 50 can be simplified. In addition, in this case, the influence of the metal contaminants 60 generated by the rotating electric machine 20 and the speed reducer 30 on the electric circuit 12 can be suppressed by the fiber body 13, which has a great technical significance.

[0052] (6) The assembly 100 includes the rotating electric machine 20 and the speed reducer 30. The oil OL is used to lubricate the rotating electric machine 20 and the speed reducer 30. In the assembly 100, the downstream points of the rotating electric machine 20 and the speed reducer 30 merge with the downstream points of the electric circuit 12 and are sucked into the suction port 51a of the oil pump 51. According to such a structure, the oil OL mixed with the contaminants 60 can be suppressed from flowing directly from the rotating electric machine 20 and the speed reducer 30 to the electric circuit 12 by the suction force of the oil pump 51.

[0053] (First Modification)

[0054] Figure 3 It is a diagram showing an inverter 10 according to a first modification. Figure 4 This is a diagram showing the fiber body 13 disposed in the inverter 10 as viewed from above. Figure 4 In FIG. 1 , the two-dot chain line also shows the arrangement of the introduction port 11a when viewed from the surface direction of the substrate 121. In this example, the introduction port 11a penetrates the upper wall of the housing 11 and penetrates the bottom wall of the box-shaped portion 111 arranged on the upper side in the gravity direction.

[0055] In this example, a plurality of outlets 11b (here, three) are provided. When viewed from the surface of the substrate 121, the plurality of outlets 11b are dispersed around the circuit 12. When viewed from the surface of the substrate 121, the plurality of outlets 11b are offset from the circuit portion 122.

[0056] In this example, the first circulation path C1 is a path having a plurality of partially branched paths branched from a plurality of discharge ports 11b. The plurality of partially branched paths merge with the second circulation path C2 at the upstream side of the suction port 51a of the oil pump 51. The plurality of partially branched paths may merge with the second circulation path C2 after merging with each other, for example.

[0057] In this example, a holding plate 14 for holding the fiber body 13 is also provided on the inverter 10. The holding plate 14 is a plate-shaped member that does not constitute the fiber body including the fiber body 13, and is made of, for example, metal or resin. The holding plate 14 has a holding hole 14a at the center, and the fiber body 13 is set in the holding hole 14a. Therefore, when viewed from the surface direction of the substrate 121, the fiber body 13 is located in the center of the circuit 12. When viewed from the surface direction of the substrate 121, the setting range of the fiber body 13 is narrower than the setting range of the circuit part 122.

[0058] The fiber body 13 and the retaining plate 14 divide the interior of the housing 11 into a space connected to the inlet 11a and a space provided with the circuit 12 and connected to the outlet 11b. The fiber body 13 and the retaining plate 14 are arranged so that these spaces are longitudinally ( Figure 3 The two axes are arranged in the up and down directions.

[0059] The fiber body 13 provided in this way is disposed on the upper side of the circuit 12, and is arranged between the introduction port 11a and the circuit 12 in the flow direction of the oil OL from the introduction port 11a toward the discharge port 11b. Therefore, the oil OL introduced into the housing 11 from the introduction port 11a passes through the fiber body 13 and is supplied to the circuit 12, and then is discharged from the plurality of discharge ports 11b.

[0060] That is, in this example, the circuit 12 is also arranged in the first circulation path C1. In addition, in this example, the oil OL also flows from the oil pump 51 toward the fiber body 13 in the first circulation path C1, and the oil OL flows from the circuit 12 toward the oil pump 51. The fiber body 13 is provided on the upper side in the gravity direction of the substrate 121, and is provided on the surface direction side of the substrate 121.

[0061] In this example, the oil OL that has passed through the fiber body 13 also forms a turbulent flow TF and is supplied to the circuit 12. Therefore, in this example, the cooling of the circuit 12 can also be promoted by utilizing the turbulent effect. In this example, when viewed in the surface direction of the substrate 121, the introduction port 11a, the fiber body 13, and the circuit part 122 overlap each other. Therefore, by making a part of the oil OL that has passed through the fiber body 13 directly contact the circuit part 122, the cooling efficiency of the circuit 12 can also be improved. In this example, the following effects can also be obtained.

[0062] (3) The circuit 12 includes a substrate 121 and a circuit portion 122 disposed on the surface direction side of the substrate 121. The fiber body 13 is disposed on the surface direction side of the circuit portion 122. According to such a structure, the positional relationship between the fiber body 13 and the circuit portion 122 is a positional relationship that can increase the area of ​​the turbulent flow generation region when viewed from the surface direction side of the substrate 121. Therefore, the circuit portion 122 can be cooled more widely by the turbulent flow effect, thereby improving the cooling efficiency of the circuit 12.

[0063] (4) The component 100 has an inlet 11a for the oil OL upstream of the fiber body 13, and a discharge port 11b for the oil OL downstream of the fiber body 13. When viewed in the surface direction of the substrate 121, the inlet 11a overlaps with the circuit portion 122. When viewed in the surface direction of the substrate 121, the discharge port 11b is offset from the circuit portion 122. According to such a structure, it is possible to achieve the flow of the oil OL in the lateral direction (i.e., in the direction along the surface of the fiber body 13) from the portion overlapping with the circuit portion 122 toward the offset portion, i.e., the outer region of the circuit portion 122. As a result, the oil OL that has absorbed heat from the circuit portion 122 is effectively discharged from the housing 11, thereby improving the cooling efficiency of the circuit 12.

[0064] (Second Modification)

[0065] Figure 5 It is a diagram showing an inverter 10 according to a second modification. Figure 6 This is a diagram showing the fiber body 13 disposed in the inverter 10 as viewed from above. Figure 6 Zhongyu Figure 5 The configuration of the introduction port 11a is also shown. The second modification example differs from the first modification example in that the holding plate 14 is not provided, and the fiber body 13 is directly provided on the housing 11. Therefore, in this example, the fiber body 13 divides the housing 11 into a space connected to the introduction port 11a and a space provided with the circuit 12 and connected to the discharge port 11b.

[0066] Therefore, in this example, when viewed in the surface direction of the substrate 121, the fiber body 13 overlaps with the circuit portion 122, and the setting range of the fiber body 13 when viewed in the surface direction has a width greater than the setting range of the circuit portion 122. As a result, in this example, the flow of the oil OL along the lateral direction becomes a flow passing through the surface of the fiber body 13, and turbulence TF is generated in the lateral direction due to the turbulence of the fiber surface of the fiber body 13. The turbulence TF along the lateral direction further increases the area of ​​the turbulence generation region when viewed from the surface direction side of the substrate 121, and increases the amount of oil OL that contributes to the transportation of the heat absorbed from the circuit portion 122. Therefore, according to such a structure, the cooling efficiency of the circuit 12 can be further improved compared with the case of the first modified example.

[0067] Although the embodiments of the present invention have been described above, the above embodiments merely represent a part of application examples of the present invention, and the technical scope of the present invention is not limited to the specific configurations of the above embodiments.

[0068] For example, the coolant is not necessarily the oil OL, and an insulating liquid other than the oil OL may be used as the coolant. In addition, in order to appropriately generate the turbulent flow TF, in addition to accommodating the fiber body 13 in the inverter housing S, the fiber body 13 may be provided at the inlet 11a, for example. The case where the fiber body 13 is provided at the inlet 11a includes: pasting the fiber body 13 to the inlet 11a from the outside of the housing 11; pasting the fiber body 13 to the inlet 11a from the inside of the housing 11 (in the inverter housing S); and providing the fiber body 13 in the middle of the inlet 11a.

[0069] The component 100 may also be configured to have a rotating electric machine 20 and / or a speed reducer 30, that is, at least one of the rotating electric machine 20 and the speed reducer 30. In this case, the component 100 may also be referred to as, for example, a motor component (a component having at least a motor) or a power transmission device (a device having at least a power transmission mechanism). The motor is a rotating electric machine having a motor function and / or a generator function (at least one of the motor function and the generator function). The power transmission mechanism is, for example, a gear mechanism and / or a differential gear mechanism. A device (component) having a motor and a power transmission mechanism is included in the concepts of both the motor component and the power transmission device.

[0070] Explanation of symbols

[0071] 10: Inverter

[0072] 11: Shell

[0073] 11a: Import port

[0074] 11b: Exhaust port

[0075] 12: Circuit

[0076] 121: Substrate

[0077] 122: Circuit

[0078] 13: Fiber body

[0079] 20: Rotating motor

[0080] 30: Reducer (power transmission mechanism)

[0081] 50: Cooling device

[0082] 51: Oil pump (pump)

[0083] 60: Pollutants

[0084] 100: Components

[0085] C1: First circulation path (liquid flow path)

[0086] OL: Oil (coolant)

[0087] P1: Confluence point (downstream point)

[0088] TF: Turbulence

Claims

1. A component comprising: a cooling liquid, an electric circuit and a fiber body, The circuit is arranged in a flow path of the cooling liquid, The circuit is supplied with a fluid flow that has passed through the fiber body.

2. The assembly of claim 1, wherein: In the liquid flow path, liquid flows from a pump toward the fiber body, and liquid flows from the circuit toward the pump.

3. The assembly of claim 1, wherein: The circuit comprises: a substrate, and a circuit portion provided on the surface direction side of the substrate. The fiber body is provided on the surface direction side with respect to the loop portion.

4. The assembly of claim 3, wherein: A liquid flow inlet is provided upstream of the fiber body. A liquid discharge port is provided downstream of the fiber body. When viewed in the surface direction, the introduction port overlaps with the return path portion. The discharge port is offset from the return path portion when viewed in the surface direction.

5. The assembly according to any one of claims 1 to 4, wherein: having a rotating motor and / or a power transmission mechanism, The coolant is used for lubrication of the rotating electrical machine and / or the power transmission mechanism.

6. The assembly of claim 1, wherein: having a rotating motor and / or a power transmission mechanism, The coolant is used for lubrication of the rotating electrical machine and / or the power transmission mechanism. A downstream point of the rotating electric machine and / or the power transmission mechanism and a downstream point of the electric circuit merge and are sucked into the suction port of the pump.

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