Electronic component unit and method for manufacturing the same

Abstract

To enhance the degree of freedom in a connection position of a bus bar and a connection target component arranged outside a case, while reducing a length and a weight of the bus bar.SOLUTION: An electronic component unit 79 obtained by integrating a plurality of electronic components 147 has: the plurality of electronic components 147; a case 148 for storing the plurality of electronic components 147; a mold material filled in the case 148 and sealing the plurality of electronic components 147; and bus bars 150, 151 connected to the respective electronic components 147. The case 148 has: a case body 153 supporting the plurality of electronic components 147; and a wall body 154 formed separately from the case body 153 and attached to the case body 153. The bus bars 150 and 151 penetrate a gap G provided between the case body 153 and the wall body 154.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to an electronic component unit and a method for manufacturing the same.

Background Art

[0002] In recent years, efforts to achieve a low-carbon society or a decarbonized society have been active, and research and development on electrification technologies have been conducted in vehicles, aircraft, etc. in order to reduce CO2 emissions and improve energy efficiency.

[0003] As one of the research and development on such electrification technologies, research and development of an electronic component unit in which a plurality of electronic components are integrated has been conducted. For example, Patent Document 1 discloses an electronic component unit (circuit element unit) including a plurality of electronic components (circuit elements), a case for housing the plurality of electronic components, a molding material (molding resin) filled inside the case, and a bus bar connected to each electronic component.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1, the bus bar is drawn out from the case so as to bypass the case (see FIGS. 1 and 2 of Patent Document 1). Therefore, there is a problem that the bus bar becomes long and the weight of the bus bar increases. Further, since the bus bar bypasses the case, the bus bar can be drawn out only from the opening side of the case. Therefore, there is a problem that the constraints on the connection position between the bus bar and the connection target component arranged outside the case become large.

[0006] In view of the above background, an object of the present invention is to shorten the bus bar to reduce its weight and increase the degree of freedom in the connection position between the bus bar and the component to be connected disposed outside the case.

Means for Solving the Problems

[0007] In order to solve the above problems, an aspect of the present invention is an electronic component unit (79) in which a plurality of electronic components (147) are integrated, including the plurality of electronic components, a case (148) that houses the plurality of electronic components, a molding material (149) that is filled inside the case and seals the plurality of electronic components, and bus bars (150, 151) connected to the respective electronic components. The case has a case body (153) that supports the plurality of electronic components and a wall body (154) that is formed separately from the case body and is attached to the case body. The bus bar penetrates a gap (G) provided between the case body and the wall body.

[0008] According to this aspect, the bus bar can be drawn out from the gap of the case. Therefore, compared with the case where the bus bar bypasses the case, the bus bar can be shortened and its weight can be reduced. Also, by adjusting the position of the gap of the case, the bus bar can be drawn out from a desired position of the case. Therefore, the degree of freedom in the connection position between the bus bar and the component to be connected disposed outside the case can be increased.

[0009] In the above aspect, the case body has a notch (166), the wall body has a shape corresponding to the notch, and may be engaged with the notch.

[0010] According to this aspect, the wall body can be easily attached to the case body.

[0011] In the above aspect, a plurality of bus bars are provided so as to gather at positions corresponding to the notch portions. The notch portion has a pair of side edge portions (167) facing each other and a bottom edge portion (168) connecting the pair of side edge portions. The wall body includes a pair of side portions (170) engaging with the pair of side edge portions and a bottom portion (171) connecting the pair of side portions. The bus bar may penetrate through the gap provided between the bottom edge portion and the bottom portion.

[0012] According to this aspect, a gap through which a plurality of connection bars are collectively penetrated can be easily formed.

[0013] In the above aspect, the case is formed separately from the case body and the wall body, and further has a holding body (155) for holding the bus bar. The holding body may fill at least a part of the gap and surround a portion of the bus bar that penetrates through the gap.

[0014] According to this aspect, by surrounding the bus bar with the holding body that holds the bus bar and filling the gap, it is possible to suppress the leakage of the mold material filled inside the case from the gap.

[0015] In the above aspect, the holding body has a flat base plate (173), a plurality of first ribs (174) protruding from one surface of the base plate and arranged at intervals in a first direction, and a second rib (175) facing the one surface of the base plate at an interval and extending in the first direction to connect the plurality of first ribs. The base plate, the plurality of first ribs, and the second rib may surround a portion of the bus bar that penetrates through the gap.

[0016] According to this aspect, the bus bar can be surrounded by a holding body having a simple structure.

[0017] In the above aspect, the plurality of first ribs extend in a second direction orthogonal to the first direction, and a holding groove (176) for holding the bus bar may be formed between the plurality of first ribs on the one surface of the base plate.

[0018] According to this aspect, the bus bar can be stably held by the holding body.

[0019] In the above aspect, an engagement groove (171A) may be formed in the wall body along the first direction, and the second rib may be engaged with the engagement groove.

[0020] According to this aspect, it is possible to suppress the leakage of the molding material filled inside the case from between the wall body and the holding body.

[0021] In the above aspect, a plurality of the wall bodies are provided at positions corresponding to the plurality of electronic components, a plurality of the bus bars are provided at positions corresponding to the plurality of electronic components, and may penetrate through the gap provided between the case body and each wall body.

[0022] According to this aspect, even when the electronic component unit is enlarged by integrating a large number of electronic components, the bus bar can be taken out of the case for each position corresponding to the electronic component. Therefore, the degree of freedom in designing the electronic component unit is improved.

[0023] In the above aspect, the plurality of electronic components each have a columnar shape and are arranged adjacent to each other, and the case body is bent so as to protrude toward one side in the width direction of the case body when viewed in the axial direction of the plurality of electronic components, and the plurality of wall bodies may be attached to a wall portion (161) on one side in the width direction of the case body.

[0024] According to this aspect, a plurality of connection bars can be drawn out to one side (the convex side) in the width direction of the case body. Therefore, when a plurality of components to be connected are arranged on one side in the width direction of the case body, the plurality of connection bars can be easily connected to the plurality of components to be connected.

[0025] In order to solve the above problems, an aspect of the present invention is a method for manufacturing an electronic component unit (79) including a plurality of electronic components (147), a bus bar (150) connected to each of the electronic components, a case body (153) having a notch (166), and a wall body (154) engaged with the notch, and a case (148) for housing the plurality of electronic components, the method including sequentially performing a step of arranging the bus bar on the case body so as to cross the notch, a step of engaging the wall body with the notch so that the bus bar penetrates a gap (G) provided between the notch and the wall body, and a step of sealing the plurality of electronic components with a molding material (149) by filling the inside of the case with the molding material.

[0026] According to this aspect, the bus bar can be drawn out from the gap of the case. Therefore, compared with the case where the bus bar bypasses the case, the bus bar can be shortened and weight-reduced. Also, by adjusting the position of the gap of the case, the bus bar can be drawn out from a desired position of the case. Therefore, the degree of freedom in the connection position between the bus bar and the component to be connected arranged outside the case can be increased. Furthermore, by arranging the bus bar on the case body before engaging the wall body with the notch, the bus bar can be easily arranged on the case body while checking the position of the bus bar. Therefore, the manufacture of the electronic component unit can be facilitated.

Effects of the Invention

[0027] According to the above aspects, the bus bar can be shortened and weight-reduced, and the degree of freedom in the connection position between the bus bar and the component to be connected arranged outside the case can be increased.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Mode for Carrying Out the Invention

[0029] <Aircraft 1> Hereinafter, with reference to the drawings, an aircraft 1 (an example of a moving body) according to an embodiment of the present invention will be described.

[0030] Referring to FIG. 1, the aircraft 1 is an electric vertical takeoff and landing aircraft (eVTOL) capable of taking off and landing vertically. The aircraft 1 includes a fuselage 2 extending in the front-rear direction, a front wing 3 extending in the left-right direction and connected to the front portion of the fuselage 2, a rear wing 4 extending in the left-right direction and connected to the rear portion of the fuselage 2, a left arm 5L extending in the front-rear direction and connecting the left end of the front wing 3 and the left side of the rear wing 4, and a right arm 5R extending in the front-rear direction and connecting the right end of the front wing 3 and the right side of the rear wing 4.

[0031] A cabin (not shown) for passengers to board is provided at the front portion of the fuselage 2. At the rear end of the fuselage 2, left and right propulsion units 7 (details will be described later) for generating forward propulsion force for the aircraft 1 are provided.

[0032] A plurality (for example, four) of lifting units 10 for generating lift and descending force for the aircraft 1 are provided at intervals in the front-rear direction on the left arm 5L and the right arm 5R, respectively. Each lifting unit 10 includes a lifting drive device 12 and a lifting propeller 13 attached to the lifting drive device 12. The lifting drive device 12 has an electric motor (not shown) and is configured to rotate the lifting propeller 13 by the driving force of this electric motor.

[0033] <Propulsion Unit 7> Referring to FIG. 2, each propulsion unit 7 includes a support 15, front and rear propulsion drive devices 16 (an example of an electric drive device) supported by the support 15, a rotating shaft 17 extending in the front-rear direction and rotatably supported by the front and rear propulsion drive devices 16, and a propulsion propeller 18 fixed to the rear portion of the rotating shaft 17.

[0034] The support 15 is fixed to the rear end of the fuselage 2 (refer to FIG. 1). The support 15 includes a cylindrical nacelle 20 extending in the front-rear direction and front and rear mount frames 21 fixed to the inner peripheral surface of the nacelle 20. Each mount frame 21 includes an annular hub 23 provided concentrically with the nacelle 20 and a plurality of spokes 24 extending radially from the outer peripheral surface of the hub 23 and connected to the inner peripheral surface of the nacelle 20.

[0035] The front and rear propulsion drive devices 16 are housed in the nacelle 20. The front and rear propulsion drive devices 16 are respectively fixed to the front surfaces of the hubs 23 of the front and rear mount frames 21. Details of each propulsion drive device 16 will be described later.

[0036] The rotating shaft 17 is housed in the nacelle 20. The rotating shaft 17 passes through the hubs 23 of the respective mount frames 21. A conical front cover 26 that expands in diameter rearward is fixed to the front end portion of the rotating shaft 17. The front cover 26 is disposed in front of the front propulsion drive device 16. A conical rear cover 27 that expands in diameter forward is fixed to the rear end portion of the rotating shaft 17. The rear cover 27 is disposed behind the central portion of the propulsion propeller 18.

[0037] The propulsion propeller 18 is housed in the nacelle 20. The propulsion propeller 18 is configured to generate a forward propulsion force for the aircraft 1 by rotating integrally with the rotating shaft 17 as the rotating shaft 17 rotates.

[0038] <Propulsion drive device 16> Referring to FIGS. 2 and 3, each propulsion drive device 16 includes an electric motor 31 (an example of a rotating electric machine), a control device 32 disposed on the rear side of the electric motor 31, a fan 33 disposed on the front side of the electric motor 31, and a duct cover 34 that covers the outer peripheries of the electric motor 31, the control device 32, and the fan 33. Note that in FIG. 4, the duct cover 34 is not shown.

[0039] <Electric motor 31> Referring to FIGS. 4 and 5, the electric motor 31 is sandwiched between the control device 32 and the fan 33. For example, the electric motor 31 is an inner rotor type three-phase AC motor. The electric motor 31 has a housing 36, a lid body 37, a shaft 38, a rotor 39, and a stator 40.

[0040] The housing 36 is cylindrical and extends in the front-rear direction on the outer periphery of the shaft 38. The housing 36 is disposed on the outer peripheries of the rotor 39 and the stator 40, and houses the rotor 39 and the stator 40 (an example of a component of the electric motor 31).

[0041] On the outer peripheral surface of the housing 36, a plurality of first cooling fins 42 project at intervals in the circumferential direction of the housing 36. The plurality of first cooling fins 42 are integrally formed with the housing 36. Each first cooling fin 42 is in a flat plate shape and extends along the front-rear direction. Each first cooling fin 42 continuously extends from the front end portion (one end portion in the front-rear direction) to the rear end portion (the other end portion in the front-rear direction) of the housing 36.

[0042] On the outer peripheral surface of the housing 36, a plurality of fastening protrusions 43 project at intervals in the circumferential direction of the housing 36. The plurality of fastening protrusions 43 are provided between adjacent first cooling fins 42. A cooling air flow path P that is continuous from the front end portion to the rear end portion of the housing 36 is formed between adjacent first cooling fins 42 and each fastening protrusion 43. The plurality of fastening protrusions 43 are integrally formed with the housing 36.

[0043] Each fastening protrusion 43 is in a rod shape having a rectangular cross section and extends along the front-rear direction. That is, each fastening protrusion 43 extends parallel to each first cooling fin 42. Each fastening protrusion 43 continuously extends from the front end portion (one end portion in the front-rear direction) to the rear end portion (the other end portion in the front-rear direction) of the housing 36. Each fastening protrusion 43 is integrally formed of the same material from the front end portion (one end portion in the front-rear direction) to the rear end portion (the other end portion in the front-rear direction).

[0044] At the front end portion of each fastening protrusion 43, a first bolt hole 44 for fastening the lid body 37 to the housing 36 is provided. At the rear end portion of each fastening protrusion 43, a second bolt hole 45 for fastening the casing 74 of the control device 32, which will be described later, to the housing 36 is provided. The first bolt hole 44 and the second bolt hole 45 extend along the front-rear direction.

[0045] The lid 37 is adjacent to the housing 36 and closes the opening on the front side of the housing 36 (the side opposite to the control device 32). The lid 37 has a disc shape and extends along a plane orthogonal to the front-rear direction. The lid 37 is formed separately from the housing 36. In other embodiments, the lid 37 may be integrally formed with the housing 36.

[0046] A plurality of first fastening pieces 47 project from the outer peripheral portion of the lid 37 at intervals in the circumferential direction of the lid 37. Each first fastening piece 47 is provided with a first fastening hole 48 in the front-rear direction, and the lid 37 is fastened to the housing 36 by engaging a first fastening bolt 49 passing through the first fastening hole 48 with a first bolt hole 44 of each fastening projection 43 of the housing 36. A circular first through hole 51 is provided in the central portion of the lid 37 in the front-rear direction. A first bearing 52 is attached to the first through hole 51.

[0047] Referring to FIG. 2, the shaft 38 extends in the front-rear direction (an example of a predetermined axial direction). The shaft 38 forms a part of the rotating shaft 17 of the propulsion unit 7. Therefore, when the shaft 38 rotates, the entire rotating shaft 17 rotates, and the propulsion propeller 18 rotates integrally with the rotating shaft 17. As a result, a forward propulsion force is generated on the aircraft 1, and the aircraft 1 propels forward. The shaft 38 extends along the propulsion direction of the aircraft 1 (see the arrow X in FIG. 2).

[0048] Referring to FIG. 5, the shaft 38 is hollow. The shaft 38 has a main body portion 55 accommodated in the housing 36, an extension portion 56 extending rearward (toward the control device 32 side) from the main body portion 55, and a protruding portion 57 protruding forward (opposite to the control device 32 side) from the main body portion 55. The protruding portion 57 passes through the first through hole 51 of the lid 37 and extends to the space on the front side of the electric motor 31. The protruding portion 57 is rotatably supported by the lid 37 via the first bearing 52.

[0049] Referring to FIGS. 4 and 5, the rotor 39 is hollow. The rotor 39 is disposed on the outer periphery of the main body portion 55 of the shaft 38. The rotor 39 includes a cylindrical rotor core 61 extending in the front-rear direction, a rotor plate 62 extending in the radial direction and connecting the main body portion 55 of the shaft 38 and the rotor core 61, and a plurality of permanent magnets 63 fixed to the outer peripheral surface of the rotor core 61. The rotor core 61 and the rotor plate 62 are integrally formed with the shaft 38. The rotor plate 62 is provided with a plurality of communication holes 65 penetrating in the front-rear direction.

[0050] The stator 40 is disposed on the outer periphery of the rotor 39 and is opposed to the rotor 39 with a gap therebetween. The stator 40 includes a cylindrical stator core 67 extending in the front-rear direction, a plurality of teeth 68 protruding from the inner peripheral surface of the stator core 67, a plurality of coils 69 wound around the plurality of teeth 68, and three motor-side terminals 70 (an example of a terminal on the rotating electrical machine side) connected to the plurality of coils 69. The stator core 67 is fixed to the inner peripheral surface of the housing 36. Among the components of the electric motor 31 and the control device 32, the plurality of coils 69 generate the largest amount of heat. Therefore, the amount of heat generated by the electric motor 31 is larger than the amount of heat generated by the control device 32. The three motor-side terminals 70 respectively correspond to the U-phase, V-phase, and W-phase of the three-phase alternating current.

[0051] <Control device 32> Referring to FIGS. 3 and 4, the control device 32 is integrated with the electric motor 31 and controls the drive of the electric motor 31. That is, the propulsion drive device 16 of the present embodiment is an electromechanical integrated drive device.

[0052] Referring to FIGS. 6 and 7, the control device 32 includes a casing 74, a resolver 75, a DC input connector 76, three power modules 77, three pressing members 78, a smoothing capacitor 79, first and second DC bus bars 82 and 83, three AC bus bars 84, three current sensors 85, a communication connector 86, a drive board 87, a control board 88, and a partitioning member 89 (see FIG. 5). In FIG. 5, the components E of the control device 32 (for example, three power modules 77, a smoothing capacitor 79, three current sensors 85, a drive board 87, and a control board 88) are omitted, and only the approximate positions of the components E are shown.

[0053] Referring to FIG. 5, the casing 74 is adjacent to the housing 36 of the electric motor 31. The casing 74 is formed of metal and has a bottomed cylindrical shape. The casing 74 houses the components E of the control device 32.

[0054] The casing 74 has a cylindrical peripheral wall portion 93 that extends in the front-rear direction on the outer periphery of the extension portion 56 of the shaft 38, and a bottom wall portion 94 that closes the opening on the rear side (opposite side to the electric motor 31) of the peripheral wall portion 93. Hereinafter, when describing the "circumferential direction" in the description of the components of the control device 32, it refers to the circumferential direction of the peripheral wall portion 93 of the casing 74 (in other words, the circumferential direction centered on the extension portion 56 of the shaft 38), and when describing the "radial direction" in the description of the components of the control device 32, it refers to the radial direction of the peripheral wall portion 93 of the casing 74 (in other words, the radial direction centered on the extension portion 56 of the shaft 38).

[0055] Referring to FIGS. 3 and 4, a plurality of second cooling fins 96 protrude from the outer peripheral surface of the peripheral wall portion 93 of the casing 74 at intervals in the circumferential direction. The plurality of second cooling fins 96 are integrally formed with the peripheral wall portion 93. Each second cooling fin 96 has a flat plate shape and extends along the front-rear direction. Each second cooling fin 96 continuously extends from the front end portion (one end portion in the front-rear direction) to the rear end portion (the other end portion in the front-rear direction) of the peripheral wall portion 93.

[0056] Referring to FIGS. 3 and 5, a plurality of second fastening pieces 97 project from the front end portion (the end portion on the side of the electric motor 31) of the outer peripheral surface of the peripheral wall portion 93 of the casing 74 at intervals in the circumferential direction. Each second fastening piece 97 is provided with a second fastening hole 98 in the front-rear direction, and the second fastening bolt 99 passing through the second fastening hole 98 engages with the second bolt hole 45 of each fastening projection 43 of the housing 36, whereby the casing 74 is fastened to the housing 36.

[0057] A plurality of third fastening pieces 101 project from the rear end portion (the end portion on the side opposite to the electric motor 31) of the outer peripheral surface of the peripheral wall portion 93 of the casing 74 at intervals in the circumferential direction. Each third fastening piece 101 is provided with a third fastening hole 102 in the front-rear direction.

[0058] Referring to FIGS. 7 and 8, three pedestal portions 105 project from the inner peripheral surface of the peripheral wall portion 93 of the casing 74 at intervals in the circumferential direction. A pair of fixing projections 106 project from both circumferential sides of the inner surface (the radially inner surface) of each pedestal portion 105. An engaging recess 107 is provided between the pair of fixing projections 106 at the circumferential center of the inner surface of each pedestal portion 105. Two of the three pedestal portions 105 are arranged such that the circumferential position of one fixing projection 106 overlaps with the circumferential position of the plurality of second fastening pieces 97, and the other fixing projection 106 is arranged such that its circumferential position does not overlap with that between the plurality of second fastening pieces 97.

[0059] Referring to FIGS. 5 and 6, the bottom wall portion 94 of the casing 74 is in the shape of a disc and extends along a plane perpendicular to the front-rear direction. The bottom wall portion 94 is formed separately from the peripheral wall portion 93. In other embodiments, the bottom wall portion 94 may be integrally formed with the peripheral wall portion 93.

[0060] A plurality of fourth fastening pieces 109 project from the outer peripheral portion of the bottom wall portion 94 of the casing 74 at intervals in the circumferential direction. Each fourth fastening piece 109 is provided with a fourth fastening hole 110 in the front-rear direction, and the third fastening bolt 111 passing through the fourth fastening hole 110 engages with the third fastening hole 102 of each third fastening piece 101 of the peripheral wall portion 93, whereby the bottom wall portion 94 is fastened to the peripheral wall portion 93.

[0061] At the center of the bottom wall portion 94 of the casing 74, a circular second through hole 113 is provided in the front-rear direction. A second bearing 114 is attached to the second through hole 113. The extension 56 of the shaft 38 penetrates through the second through hole 113. The extension 56 of the shaft 38 is rotatably supported in the second through hole 113 via the second bearing 114. At the lower part of the bottom wall portion 94, a first fitting hole 116 and a second fitting hole 117 are provided in the front-rear direction with a circumferential interval therebetween.

[0062] Referring to FIG. 6, the resolver 75 is fixed to the center of the bottom wall portion 94 of the casing 74. A plurality of detection portions (not shown) for detecting the rotation of the extension 56 of the shaft 38 are provided in the resolver 75 at circumferential intervals.

[0063] Referring to FIG. 9, the DC input connector 76 is connected to a DC power supply device 125 provided outside the propulsion drive device 16. For example, the DC power supply device 125 is constituted by a battery or a generator.

[0064] Referring to FIGS. 3 and 6, the DC input connector 76 is fitted in the first fitting hole 116 of the bottom wall portion 94 of the casing 74 and penetrates through the bottom wall portion 94 of the casing 74. A pair of DC input terminals 126 are provided on the front surface (the surface on the side of the electric motor 31) of the DC input connector 76.

[0065] Referring to FIG. 9, the three power modules 77 each include two switching elements 128. That is, the control device 32 includes a total of six switching elements 128. The six switching elements 128 constitute an inverter 130 (an example of a power conversion circuit) that converts DC power (DC current) input from the DC power supply device 125 via a pair of DC lines 129 into AC power (AC current). Each switching element 128 is constituted by a semiconductor element such as an IGBT or a MOSFET. Each switching element 128 is arranged in parallel with a freewheel diode 131.

[0066] Referring to FIGS. 7 and 8, the three power modules 77 are in contact with the inner peripheral surface of the peripheral wall portion 93 of the casing 74 at circumferential intervals. The circumferential positions of the three power modules 77 do not overlap with the circumferential positions of the plurality of second fastening pieces 97 (i.e., the fastening points between the casing 74 and the housing 36), and overlap with the circumferential positions of the plurality of second cooling fins 96. The three power modules 77 are arranged avoiding the uppermost part of the casing 74. The arrow D1 appropriately attached to each figure indicates the direction parallel to the inner surface 77A of each power module 77 (hereinafter referred to as the "first direction D1"). Also, the arrow D2 appropriately attached to each figure indicates the direction orthogonal to the first direction D1 and the inner surface 77A of the power module 77 (hereinafter referred to as the "second direction D2").

[0067] Each power module 77 includes a flat module body 133, an AC module bus bar 134 extending radially inward from the front end portion (one end portion in the front-rear direction) of the module body 133, and a first DC module bus bar 135 and a second DC module bus bar 136 extending radially inward from the rear end portion (the other end portion in the front-rear direction) of the module body 133.

[0068] The three pressing members 78 are arranged at circumferential intervals. Each pressing member 78 includes a rectangular parallelepiped engaging piece 138 and a plurality of protruding pieces 139 protruding from both circumferential sides of the engaging piece 138. The engaging piece 138 is engaged with the engaging concave portion 107 of each pedestal portion 105 provided on the inner peripheral surface of the peripheral wall portion 93 of the casing 74. The engaging piece 138 sandwiches the module body 133 of each power module 77 between it and the engaging concave portion 107 of each pedestal portion 105, and presses the module body 133 of each power module 77 against the engaging concave portion 107 of each pedestal portion 105. An AC insert nut 142 is embedded in the front surface (one surface in the front-rear direction) of the engaging piece 138, and two DC insert nuts 143 are embedded in the rear surface (the other surface in the front-rear direction) of the engaging piece 138. Each protruding piece 139 is fixed to each fixing protrusion 106 of each pedestal portion 105 by a fixing bolt 144.

[0069] 9, smoothing capacitor 79 is connected in parallel with inverter 130 with respect to DC power supply device 125. Smoothing capacitor 79 smoothes the DC current input from DC power supply device 125 to inverter 130. More specifically, smoothing capacitor 79 smoothes pulse current (pulse-shaped current caused by surge voltage) generated in the DC current input from DC power supply device 125 to three power modules 77, thereby protecting three power modules 77.

[0070] 7, the smoothing capacitor 79 is provided at a distance from the inner circumferential surface of the peripheral wall portion 93 of the casing 74. The smoothing capacitor 79 is arranged together with the three power modules 77 in a semicircular portion (an example of one of the semicircular portions) on the left side of the casing 74. The smoothing capacitor 79 is provided continuously along the inner surfaces 77A of the three power modules 77 (more specifically, the radially inner surfaces of the module bodies 133 of the three power modules 77). Therefore, when viewed from the front side (the electric motor 31 side), the smoothing capacitor 79 and the power modules 77 are arranged in order from the radially inner side to the radially outer side between the second through-hole 113 of the bottom wall portion 94 of the casing 74 and the inner circumferential surface of the peripheral wall portion 93 of the casing 74.

[0071] 7, 10, and 11, smoothing capacitor 79 has a plurality of capacitor elements 147 (an example of an electronic component), a capacitor case 148 (an example of a case) that houses the plurality of capacitor elements 147, a molding material 149 (see FIG. 11) that is filled inside capacitor case 148 and seals the plurality of capacitor elements 147, three first bus bars 150 that are connected to the plurality of capacitor elements 147, and three second bus bars 151 that are connected to the plurality of capacitor elements 147. In other words, smoothing capacitor 79 is a capacitor unit (an example of an electronic component unit) that integrates a plurality of capacitor elements 147.

[0072] A plurality of capacitor elements 147 are arranged adjacent to each other. Each capacitor element 147 has a columnar shape centered on an axis extending in the front-rear direction. That is, in this embodiment, the axial direction of each capacitor element 147 is the front-rear direction.

[0073] The capacitor case 148 includes a case body 153 that supports a plurality of capacitor elements 147, three wall bodies 154 that are formed separately from the case body 153 and are attached to the case body 153, and three holding bodies 155 (only one is shown in FIG. 10) that are formed separately from the case body 153 and the three wall bodies 154 and hold the first and second bus bars 150 and 151.

[0074] The case body 153 of the capacitor case 148 is made of a metal such as aluminum. A case opening 153A is provided on the front surface (the surface on one side in the front-rear direction) of the case body 153. That is, the case body 153 has a box shape with an open front surface. A plurality of support protrusions 156 are provided at the front end portion (one end portion in the front-rear direction) of the case body 153. A plurality of mounting protrusions 157 are provided at the rear end portion (the other end portion in the front-rear direction) of the case body 153. Each mounting protrusion 157 is attached to the bottom wall portion 94 of the casing 74 by a mounting bolt 158.

[0075] The case body 153 has a shape that is long in the circumferential direction. When viewed in the front-rear direction, the case body 153 is bent so as to protrude toward the outer side in the radial direction (one side in the width direction of the case body 153) and has a substantially U shape. The case body 153 includes an inner wall portion 160 that extends in the circumferential direction, an outer wall portion 161 (an example of a wall portion on one side in the width direction) that extends in the circumferential direction on the outer side in the radial direction of the inner wall portion 160, a pair of side wall portions 162 that extend in the radial direction and connect both circumferential ends of the inner wall portion 160 and both circumferential ends of the outer wall portion 161, and a base wall portion 163 that connects the rear end portions (the end portions opposite to the electric motor 31) of the inner wall portion 160, the outer wall portion 161, and the pair of side wall portions 162.

[0076] The inner wall portion 160 of the case body 153 rises vertically from the base wall portion 163. On the inner wall portion 160, three flat portions 165 are formed on the radially inner side of the plurality of capacitor elements 147. That is, the three flat portions 165 are provided at positions corresponding to the plurality of capacitor elements 147. When viewed from the front side (the side of the electric motor 31), each flat portion 165 extends along the second direction D2.

[0077] The outer wall portion 161 of the case body 153 rises vertically from the base wall portion 163. On the outer wall portion 161, three notches 166 are formed on the radially outer side of the plurality of capacitor elements 147. That is, the three notches 166 are provided at positions corresponding to the plurality of capacitor elements 147. The three notches 166 are arranged at intervals in the circumferential direction (the longitudinal direction of the case body 153). Referring to FIGS. 10 and 12, each notch 166 has a rectangular shape that is long in the front-rear direction and the first direction D1. Each notch 166 penetrates the outer wall portion 161 in the radial direction (the width direction of the case body 153). Each notch 166 extends continuously from the front end portion (one end portion in the front-rear direction) to the rear end portion (the other end portion in the front-rear direction) of the outer wall portion 161. Each notch 166 has a pair of side edge portions 167 extending in the front-rear direction and a bottom edge portion 168 extending in the first direction D1 and connecting the rear end portions of the pair of side edge portions 167. The pair of side edge portions 167 face each other with an interval in the first direction D1.

[0078] Referring to FIG. 7, the base wall portion 163 of the case body 153 has a shape that is long in the circumferential direction. A plurality of capacitor elements 147 are placed on the front surface of the base wall portion 163. The rear surface of the base wall portion 163 is in contact with the front surface (cooling surface) of the bottom wall portion 94 of the casing 74.

[0079] Referring to FIGS. 10 and 11, the three walls 154 of the capacitor case 148 are attached to the outer wall portion 161 of the case body 153. The three walls 154, together with the inner wall portion 160, the outer wall portion 161, and the pair of side wall portions 162 of the case body 153, define the outer shell of the capacitor case 148 (the portion surrounding the plurality of capacitor elements 147 and the molding material 149). The three walls 154 are arranged radially outside the plurality of capacitor elements 147. That is, the three walls 154 are provided at positions corresponding to the plurality of capacitor elements 147.

[0080] Each wall 154 has a flat rectangular parallelepiped shape that is long in the front-rear direction and the first direction D1. That is, each wall 154 has a shape corresponding to each notch 166 of the case body 153. Each wall 154 is engaged with each notch 166 of the case body 153. Each wall 154 is made of an insulating resin.

[0081] Each wall 154 includes a pair of side portions 170 extending in the front-rear direction, a bottom portion 171 extending in the first direction D1 and connecting the rear end portions of the pair of side portions 170, and a top portion 172 extending in the first direction D1 and connecting the front end portions of the pair of side portions 170. A first engagement groove 170A is provided in each side portion 170 along the front-rear direction. The first engagement groove 170A is engaged with each side edge portion 167 of each notch 166 of the case body 153. A second engagement groove 171A is provided in the bottom portion 171 along the first direction D1. A gap G is provided between the bottom portion 171 and the bottom edge portion 168 of each notch 166 of the case body 153. The top portion 172 is provided flush with the front surface (the surface on one side in the front-rear direction) of the outer wall portion 161 of the case body 153.

[0082] Referring to FIGS. 10 and 12, the three holders 155 of the capacitor case 148 (only one is shown in FIGS. 10 and 12) are attached to the outer wall portion 161 and the base wall portion 163 of the case body 153. Each holder 155 engages with each notch 166 of the case body 153 at the rear side of each wall body 154. Each holder 155 fills the entire gap G and surrounds the portion of the first and second bus bars 150 and 151 that penetrates the gap G. In other embodiments, each holder 155 may fill a part of the gap G. Each holder 155 is made of an insulating resin.

[0083] Each holder 155 has a flat base plate 173, a plurality of first ribs 174 protruding from the front surface (one surface) of the base plate 173, and a second rib 175 facing the front surface of the base plate 173 with a space therebetween. The base plate 173 has a shape that is long in the first direction D1 and the second direction D2. The plurality of first ribs 174 are arranged at intervals in the first direction D1 and extend in the second direction D2. A plurality of holding grooves 176 are formed between the plurality of first ribs 174 on the front surface of the base plate 173. The second rib 175 extends in the first direction D1 and connects the central portions of the plurality of first ribs 174 in the second direction D2. The second rib 175 engages with the second engagement groove 171A at the bottom portion 171 of each wall body 154.

[0084] Referring to FIG. 11, the mold material 149 is made of, for example, an insulating resin. The mold material 149 covers the entire plurality of capacitor elements 147.

[0085] Referring to FIGS. 12 and 13, the three first bus bars 150 and the three second bus bars 151 (only one of each is shown in FIGS. 12 and 13) are provided at positions corresponding to the plurality of capacitor elements 147. One of the three first bus bars 150 and one of the three second bus bars 151 gather at positions corresponding to the respective notches 166 of the case body 153.

[0086] Referring to FIGS. 10 and 13, each first bus bar 150 connects each capacitor element 147 and each power module 77. The radially inner end of each first bus bar 150 is connected to the upper part of the side surface (radially outer surface) of each capacitor element 147. Each first bus bar 150 is held in each holding groove 176 of each holder 155 of the capacitor case 148. Each first bus bar 150 extends through the gap G (see FIG. 10) to the rear side of each pressing member 78. The portion of each first bus bar 150 that passes through the gap G is surrounded by the base plate 173 of each holder 155, a plurality of first ribs 174, and the second rib 175.

[0087] Referring to FIGS. 10 and 13, each second bus bar 151 connects each capacitor element 147 and each power module 77. The radially inner end of each second bus bar 151 is connected to the lower part of the side surface (radially outer surface) of each capacitor element 147. Each second bus bar 151 is held in each holding groove 176 of each holder 155 of the capacitor case 148. Each second bus bar 151 extends through the gap G (see FIG. 10) to the rear side of each pressing member 78. The portion of each second bus bar 151 that passes through the gap G is surrounded by the base plate 173 of each holder 155, a plurality of first ribs 174, and the second rib 175.

[0088] Referring to FIG. 6, the first DC bus bar 82 has a first main body bus bar 199 extending in the circumferential direction and three first auxiliary bus bars 200 bent rearward from the outer peripheral portion of the first main body bus bar 199. One circumferential end portion of the first main body bus bar 199 is connected to one DC input terminal 126 of the DC input connector 76. Referring to FIG. 13, the tip of each first auxiliary bus bar 200 is bent radially outward and extends to the rear side of each pressing member 78. The tip of each first auxiliary bus bar 200, together with the radial outer end portions of the first DC module bus bar 135 of each power module 77 and each first bus bar 150, is fixed to one DC insert nut 143 of each pressing member 78 by a first fixing bolt 201. Thereby, the first DC bus bar 82, each power module 77, and each first bus bar 150 are connected to each other.

[0089] Referring to FIG. 6, the second DC bus bar 83 has a second main body bus bar 203 extending in the circumferential direction and three second auxiliary bus bars 204 bent rearward from the outer peripheral portion of the second main body bus bar 203. One circumferential end portion of the second main body bus bar 203 is connected to the other DC input terminal 126 of the DC input connector 76. Referring to FIG. 13, the tip of each second auxiliary bus bar 204 is bent radially outward and extends to the rear side of each pressing member 78. The tip of each second auxiliary bus bar 204, together with the radial outer end portions of the second DC module bus bar 136 of each power module 77 and each second bus bar 151, is fixed to the other DC insert nut 143 of each pressing member 78 by a second fixing bolt 205. Thereby, the second DC bus bar 83, each power module 77, and each second bus bar 151 are connected to each other.

[0090] Referring to FIGS. 6 and 13, one longitudinal end of each AC bus bar 84 is fixed to the AC insert nut 142 of each pressing member 78 by a third fixing bolt 209 together with the AC module bus bar 134 of each power module 77. Thereby, each AC bus bar 84 and each power module 77 are connected to each other. An AC output terminal 211 is provided at the other longitudinal end of each AC bus bar 84. That is, the control device 32 is provided with three AC output terminals 211. The three AC output terminals 211 are arranged at a circumferential interval from a pair of DC input terminals 126 in a semi-circular portion on the right side of the casing 74 (an example of the other semi-circular portion). Each AC output terminal 211 is connected to each motor-side terminal 70 (see FIG. 4) of the stator 40 of the electric motor 31 in the internal space of the casing 74. Thereby, as shown in FIG. 9, the alternating current output from the inverter 130 (three power modules 77) is output to each coil 69 of the electric motor 31 via each AC output terminal 211 and each motor-side terminal 70.

[0091] Referring to FIG. 9, three current sensors 85 are respectively arranged on three AC lines 207 (three-phase lines) leading from the inverter 130 (three power modules 77) to each coil 69 of the electric motor 31, and detect the values of the currents output from the three power modules 77.

[0092] Referring to FIG. 6, three current sensors 85 are respectively arranged on the three AC bus bars 84. The three current sensors 85 are arranged in a semi-circular portion on the right side of the casing 74. The three current sensors 85 are arranged at a circumferential interval. The three current sensors 85 are fixed to a sensor holder 214 fixed to the outer peripheral portion of the bottom wall portion 94 of the casing 74. The sensor holder 214 is formed separately from the resolver 75.

[0093] The communication connector 86 is arranged circumferentially between a pair of DC input terminals 126 and three AC output terminals 211. The communication connector 86 is fitted into the second fitting hole 117 of the bottom wall portion 94 of the casing 74 and penetrates the bottom wall portion 94 of the casing 74. The communication connector 86 is connected to an external device (for example, a control device provided on the body 2) provided outside the propulsion drive device 16.

[0094] The drive board 87 is a gate drive board for driving the switching elements 128 (semiconductor elements) of the three power modules 77. The drive board 87 is arranged on the front side (the side of the electric motor 31) of the smoothing capacitor 79. The drive board 87 is supported by a plurality of support protrusions 156 provided on the case body 153 of the capacitor case 148 of the smoothing capacitor 79.

[0095] The control board 88 is an ECU board that controls the drive of the inverter 130 (three power modules 77) via the drive board 87. The control board 88 is connected to the drive board 87 via a connector (not shown) and is connected to the communication connector 86 via a cable (not shown). The control board 88 is held by a holding member (not shown) attached to the bottom wall portion 94 of the casing 74.

[0096] Referring to FIG. 5, the partition member 89 partitions the internal space of the housing 36 and the internal space of the casing 74. The partition member 89 partitions the rotor 39 and the stator 40 of the electric motor 31 and the component E of the control device 32 (for example, three power modules 77, a smoothing capacitor 79, three current sensors 85, a drive board 87, and a control board 88). The partition member 89 is housed in the casing 74. In other embodiments, the partition member 89 may be housed in the housing 36 of the electric motor 31. The partition member 89 has a flat plate shape along a plane perpendicular to the front-rear direction. A shaft hole 216 is provided at the center of the partition member 89. The extension portion 56 of the shaft 38 penetrates the shaft hole 216.

[0097] <Fan 33> Referring to FIGS. 3 to 5, the fan 33 is disposed on the front side (one side in the front-rear direction) of the electric motor 31. The fan 33 is disposed on the side opposite to the control device 32 with the electric motor 31 interposed therebetween. The fan 33 has a cylindrical hub portion 223 extending in the front-rear direction, a cylindrical rim portion 224 extending in the front-rear direction on the outer periphery of the hub portion 223, and a plurality of spoke portions 225 extending in the radial direction and connecting the hub portion 223 and the rim portion 224. The hub portion 223 is fixed to the protruding portion 57 of the shaft 38 of the electric motor 31. Thereby, the fan 33 can rotate integrally with the shaft 38. A plurality of air blowing ribs 226 are provided on the outer peripheral surface of the rim portion 224 at intervals in the circumferential direction of the rim portion 224. Each air blowing rib 226 is inclined forward (one side in the front-rear direction) toward the downstream side in the rotation direction R of the fan 33.

[0098] <Duct cover 34> Referring to FIGS. 3 and 4, the duct cover 34 has a cylindrical shape extending in the front-rear direction. A cooling air passage 229 is formed between the duct cover 34, the housing 36 of the electric motor 31, and the peripheral wall portion 93 of the casing 74 of the control device 32. That is, the cooling air passage 229 is formed on the outer periphery of the housing 36 of the electric motor 31 and the casing 74 of the control device 32. The cooling air passage 229 has a cylindrical shape and extends in the front-rear direction.

[0099] <Cooling of the electric motor 31 and the control device 32> Referring to FIGS. 3 and 5, when the electric motor 31 is driven and the shaft 38 rotates, the fan 33 fixed to the protruding portion 57 of the shaft 38 rotates integrally with the shaft 38. Thereby, cooling air is sent toward the outer peripheral surface of the housing 36 and the outer peripheral surface of the peripheral wall portion 93 of the casing 74 by the plurality of air blowing ribs 226 of the fan 33. That is, the cooling air is introduced into the cooling air passage 229 by the plurality of air blowing ribs 226 of the fan 33.

[0100] The cooling air introduced into the cooling air passage 229 flows from the front side to the rear side between the outer periphery of the housing 36 and the plurality of first cooling fins 42. Thereby, the electric motor 31 is cooled by the cooling air. Next, the cooling air flows from the front side to the rear side between the outer periphery of the peripheral wall portion 93 of the casing 74 and the plurality of second cooling fins 96. Thereby, the housing 36 of the control device 32 is cooled by the cooling air. The cooling air that has passed through the outer periphery of the peripheral wall portion 93 of the casing 74 is discharged from the rear end portion of the cooling air passage 229 to the space behind the control device 32.

[0101] <Method for manufacturing the smoothing capacitor 79> Next, an example of the method for manufacturing the smoothing capacitor 79 will be described. In the present embodiment, the case where an operator manufactures the smoothing capacitor 79 will be described. In other embodiments, a manufacturing apparatus (not shown) may manufacture the smoothing capacitor 79, or the operator and the manufacturing apparatus may cooperate to manufacture the smoothing capacitor 79.

[0102] First, the operator arranges the case body 153 so that the case opening 153A faces upward, and places the plurality of capacitor elements 147 on the case body 153.

[0103] Referring to FIG. 12, next, the operator engages each holding body 155 holding the first bus bar 150 and the second bus bar 151 with each notch 166 of the case body 153, thereby arranging the first bus bar 150 and the second bus bar 151 across each notch 166 in the case body 153.

[0104] Referring to FIG. 10, next, the operator engages each wall body 154 with each notch 166 of the case body 153 so that the first bus bar 150 and the second bus bar 151 penetrate the gap G. Next, the operator fills the gaps between the first bus bar 150 and the second bus bar 151 and each holding body 155, the gaps between each wall body 154 and each holding body 155, and the gaps between each notch 166 of the case body 153 and each wall body 154 and each holding body 155 with a high-viscosity adhesive (not shown).

[0105] Referring to FIG. 11, next, the operator seals the plurality of capacitor elements 147 with the molding material 149 by filling the inside of the capacitor case 148 with the molding material 149. At this time, since the gaps between the respective members are filled with a high-viscosity adhesive (not shown) as described above, the outflow of the molding material 149 to the outside of the capacitor case 148 is suppressed.

[0106] <Effect> In the smoothing capacitor 79 according to the present embodiment, since the first and second bus bars 150 and 151 penetrate the gap G of the capacitor case 148, the first and second bus bars 150 and 151 can be drawn out from the gap G of the capacitor case 148. Thereby, compared with the case where the first and second bus bars 150 and 151 bypass the capacitor case 148, the first and second bus bars 150 and 151 can be shortened and weight-reduced. Further, by adjusting the position of the gap G of the capacitor case 148, the first and second bus bars 150 and 151 can be drawn out from a desired position of the capacitor case 148. Therefore, the degree of freedom in the connection position between the first and second bus bars 150 and 151 and the plurality of power modules 77 arranged outside the capacitor case 148 can be increased.

[0107] Further, by shortening the first and second bus bars 150 and 151 as described above, the distance between the plurality of capacitor elements 147 and the three power modules 77 can be shortened. Therefore, an increase in the inductance of the inverter 130 constituted by the switching elements 128 of the three power modules 77 can be suppressed.

[0108] Further, in the manufacturing method of the smoothing capacitor 79 according to the present embodiment, before engaging each wall body 154 with each notch portion 166 of the case body 153, the first bus bar 150 and the second bus bar 151 are arranged on the case body 153. Therefore, the first bus bar 150 and the second bus bar 151 can be easily arranged on the case body 153 while checking the positions of the first bus bar 150 and the second bus bar 151. Therefore, the manufacturing of the smoothing capacitor 79 can be facilitated.

[0109] In addition, since a plurality of capacitor elements 147 are assembled and integrated, by performing the filling operation of the molding material 149 once and curing the molding material 149, the production of the smoothing capacitor 79 is completed. Therefore, compared with the case where the filling operation of the molding material 149 is performed multiple times to manufacture the smoothing capacitor 79, the manufacturing process of the smoothing capacitor 79 can be simplified and the manufacturing time of the smoothing capacitor 79 can be shortened.

[0110] <Modification Example> In the above embodiment, the plurality of capacitor elements 147 are an example of a plurality of electronic components. In other embodiments, components other than the plurality of capacitor elements 147 (for example, a plurality of power modules 77 and a plurality of boost reactors (not shown)) may be an example of a plurality of electronic components.

[0111] In the above embodiment, a plurality of notches 166 are formed in the outer wall portion 161 of the case body 153. In other embodiments, a plurality of notches 166 may be formed in a wall portion other than the outer wall portion 161 of the case body 153 (for example, the inner wall portion 160 or the pair of side wall portions 162).

[0112] In the above embodiment, a plurality of notches 166 are formed in the case body 153. In other embodiments, only one notch 166 may be formed in the case body 153.

[0113] In the above embodiment, the inner rotor type electric motor 31 is an example of a rotating electric machine. In other embodiments, an outer rotor type electric motor may be an example of a rotating electric machine, or a generator may be an example of a rotating electric machine.

[0114] In the above embodiment, the configuration of the present invention is applied to the propulsion drive device 16. In other embodiments, the configuration of the present invention may be applied to the lifting drive device 12.

[0115] In the above-described embodiment, the configuration of the present invention is applied to an electric vertical takeoff and landing aircraft. In other embodiments, the configuration of the present invention may be applied to aircraft other than electric vertical takeoff and landing aircraft (i.e., general aircraft that cannot take off and land vertically), or to moving bodies other than aircraft (e.g., vehicles such as automobiles and motorcycles). Further, in other embodiments, the configuration of the present invention may be applied to devices that are fixedly provided.

[0116] With the above, the description of the specific embodiments is completed. However, the present invention is not limited to the above-described embodiments and modifications, and can be widely modified and implemented.

Explanation of Reference Numerals

[0117] 79: Smooth capacitor (an example of an electronic component unit) 147: Capacitor element (an example of an electronic component) 148: Capacitor case (an example of a case) 149: Molding material 150: First bus bar 151: Second bus bar 153: Case body 154: Wall body 155: Holder 161: Outer wall portion (an example of a wall portion on one side in the width direction) 166: Notch 167: Side edge portion 168: Bottom edge portion 170: Side portion 171: Bottom portion 171A: Second engagement groove 173: Base plate 174: First rib 175: Second rib 176: Holding groove D1: First direction D2: Second direction G: Gap

Claims

1. An electronic component unit in which a plurality of electronic components are integrated, comprising: the plurality of electronic components; a case for housing the plurality of electronic components; a molding material filled inside the case for sealing the plurality of electronic components; and bus bars connected to the respective electronic components. The case includes: a case body for supporting the plurality of electronic components; a wall body formed separately from the case body and attached to the case body. The bus bar penetrates through a gap provided between the case body and the wall body in the electronic component unit.

2. The case body has a notch. The wall body has a shape corresponding to the notch and engages with the notch. The electronic component unit according to claim 1.

3. A plurality of the bus bars are provided so as to converge at positions corresponding to the notch. The notch includes: a pair of side edge portions facing each other; and a bottom edge portion connecting the pair of side edge portions. The wall body includes: a pair of side portions engaging with the pair of side edge portions; and a bottom portion connecting the pair of side portions. The bus bar penetrates through the gap provided between the bottom edge portion and the bottom portion. The electronic component unit according to claim 2.

4. The case is formed separately from the case body and the wall body, and further has a holding body for holding the bus bar. The holding body fills at least a part of the gap and surrounds a portion of the bus bar that penetrates through the gap. The electronic component unit according to any one of claims 1 to 3.

5. The holding body includes: a flat base plate; a plurality of first ribs protruding from one surface of the base plate and arranged at intervals in a first direction; and a second rib facing the one surface of the base plate at an interval and extending in the first direction to connect the plurality of first ribs. The base plate, the plurality of first ribs, and the second rib surround a portion of the bus bar that penetrates through the gap. The electronic component unit according to claim 4.

6. The plurality of first ribs extend in a second direction orthogonal to the first direction. On the one surface of the base plate, a holding groove for holding the bus bar is formed between the plurality of first ribs. The electronic component unit according to claim 5.

7. An engaging groove is formed in the wall body along the first direction. The electronic component unit according to claim 5, wherein the second rib is engaged with the engagement groove.

8. A plurality of the wall bodies are provided at positions corresponding to the plurality of electronic components, The electronic component unit according to any one of claims 1 to 3, wherein a plurality of the bus bars are provided at positions corresponding to the plurality of electronic components and penetrate the gap provided between the case body and each of the wall bodies.

9. The plurality of electronic components each have a columnar shape and are arranged adjacent to each other, When viewed in the axial direction of the plurality of electronic components, the case body is bent so as to protrude toward one side in the width direction of the case body, The electronic component unit according to claim 8, wherein the plurality of wall bodies are attached to a wall portion on one side in the width direction of the case body.

10. A plurality of electronic components; A bus bar connected to each of the electronic components; A method for manufacturing an electronic component unit, comprising: a case body having a notch portion, a wall body engaged with the notch portion, and a case for housing the plurality of electronic components, Arranging the bus bar on the case body so as to cross the notch portion; Engaging the wall body with the notch portion so that the bus bar penetrates a gap provided between the notch portion and the wall body; A method for manufacturing an electronic component unit, sequentially performing a step of filling a mold material inside the case to seal the plurality of electronic components with the mold material.

Images