WO2022176900A1 - Power conversion device - Google Patents

Power conversion device Download PDF

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Publication number
WO2022176900A1
WO2022176900A1 PCT/JP2022/006136 JP2022006136W WO2022176900A1 WO 2022176900 A1 WO2022176900 A1 WO 2022176900A1 JP 2022006136 W JP2022006136 W JP 2022006136W WO 2022176900 A1 WO2022176900 A1 WO 2022176900A1
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WO
WIPO (PCT)
Prior art keywords
rib
top plate
rib portions
substrate
lid
Prior art date
Application number
PCT/JP2022/006136
Other languages
French (fr)
Japanese (ja)
Inventor
麻衣 末吉
裕人 石山
裕充 山下
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN202280009761.6A priority Critical patent/CN116784003A/en
Priority to JP2023500890A priority patent/JPWO2022176900A1/ja
Publication of WO2022176900A1 publication Critical patent/WO2022176900A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers

Definitions

  • the present disclosure relates to a power converter.
  • the lid that covers the opening provided in the housing of the power converter, in order to improve vibration resistance.
  • the lid there is also a demand for weight reduction in power converters for vehicles and the like.
  • aluminum lids are lighter than steel lids.
  • the Young's modulus of aluminum is low, there is a problem that the rigidity of the lid made of aluminum is low.
  • the outer cover (lid) has a top plate portion and a top plate portion in order to improve the rigidity of the lid. and a convex portion projecting from the plate portion.
  • the convex portion consists only of straight lines. Therefore, the section modulus of the lid (exterior cover) is not sufficiently large. Therefore, the rigidity of the lid is not sufficiently high.
  • the present disclosure has been made in view of the above problems, and an object thereof is to provide a power conversion device whose lid has sufficiently high rigidity.
  • a power conversion device of the present disclosure includes a substrate, a housing, and a lid.
  • the housing includes a bottom.
  • a substrate is placed on the bottom.
  • the lid is arranged on the opposite side of the substrate from the bottom of the housing.
  • the lid includes a top plate portion, a plurality of first rib portions, and a second rib portion.
  • the top plate portion covers the substrate.
  • the plurality of first rib portions protrude from the top plate portion along the direction in which the substrate and the top plate portion are stacked.
  • the second rib portion protrudes from the top plate portion along the direction in which the substrate and the top plate portion are overlapped.
  • the plurality of first rib portions are linear.
  • the plurality of first rib portions are connected to the second rib portion so as to face each other with the second rib portion interposed therebetween.
  • the second rib portion has an annular shape.
  • the second rib portion has an annular shape. Therefore, in a cross section passing through both the first rib portion and the second rib portion, the section modulus of the lid is larger than when the second rib portion is not provided. Therefore, the rigidity of the lid is sufficiently high.
  • FIG. 1 is an exploded perspective view schematically showing the configuration of a power converter according to Embodiment 1;
  • FIG. 1 is a perspective view schematically showing the configuration of a power converter according to Embodiment 1;
  • FIG. 1 is a top view schematically showing the configuration of a power converter according to Embodiment 1;
  • FIG. 2 is a top view schematically showing the configuration of the lid of the power converter according to Embodiment 1;
  • FIG. FIG. 5 is a cross-sectional view taken along line VV of FIG. 4;
  • FIG. 5 is a cross-sectional view taken along line VI-VI of FIG. 4;
  • FIG. 7 is an enlarged view of region VII of FIG. 6;
  • FIG. 5 is a cross-sectional view taken along line VV of FIG. 4;
  • FIG. 5 is a cross-sectional view taken along line VI-VI of FIG. 4;
  • FIG. 7 is an enlarged view of region VII of FIG. 6;
  • FIG. 3 is a perspective view schematically showing the configuration of a power conversion device according to a first modification of Embodiment 1;
  • FIG. 4 is a side view schematically showing the configuration of a power conversion device according to a first modification of the first embodiment;
  • FIG. 4 is a top view schematically showing the configuration of a power conversion device according to a second modification of the first embodiment;
  • FIG. 10 is a top view schematically showing the configuration of a power converter according to a third modification of the first embodiment;
  • FIG. 11 is a top view schematically showing the configuration of a power conversion device according to a fourth modification of the first embodiment;
  • FIG. 7 is a top view schematically showing the configuration of a power conversion device according to Embodiment 2;
  • FIG. 11 is a top view schematically showing the configuration of a power conversion device according to Embodiment 3;
  • FIG. 11 is a top view schematically showing the configuration of a power conversion device according to Embodiment 4;
  • Embodiment 1 The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7.
  • FIG. 1 The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7.
  • FIG. 1 The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7.
  • FIG. 1 The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7.
  • FIG. 1 The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7.
  • the power conversion device 100 includes a substrate 1, a housing 3, and a lid 4.
  • the power conversion device 100 further includes an electronic component 2 , a plurality of fixing parts 5 and a plurality of fixtures 6 .
  • the board 1 is configured as a power conversion circuit.
  • the substrate 1 has a flat plate shape.
  • the substrate 1 includes a front surface 1a and a back surface 1b facing the front surface 1a.
  • the electronic component 2 is arranged only on the front surface 1a of the substrate 1, but may be arranged on the back surface 1b.
  • the electronic component 2 is connected to the substrate 1.
  • the electronic component 2 is, for example, a semiconductor element such as a metal oxide semiconductor field effect transistor (MOSFET: Metal Oxide Semiconductor Field Effect Transistor), a motor relay, a coil, a capacitor, or the like.
  • the electronic component 2 is a heating element.
  • the housing 3 includes a bottom portion 31 and a peripheral wall portion 32.
  • the substrate 1 is arranged on the bottom portion 31 .
  • the peripheral wall portion 32 rises from the bottom portion 31 .
  • the peripheral wall portion 32 surrounds the entire circumference of the substrate 1 .
  • Heat generated by the electronic component 2 is radiated outside the housing 3 through the bottom portion 31 and the peripheral wall portion 32 .
  • the material of the housing 3 is a metal with high heat dissipation such as an aluminum alloy.
  • the housing 3 may include a plurality of heat radiating fins as described later.
  • the housing 3 opens toward the lid 4 .
  • the lid 4 covers the opening of the housing 3.
  • the lid 4 is arranged on the side opposite to the bottom 31 of the housing 3 with respect to the substrate 1 .
  • the lid 4 is fixed to the peripheral wall portion 32 of the housing 3 by the fixing portion 5 .
  • the lid 4 is arranged with a space in the height direction from the electronic component 2 .
  • the height direction is along the direction DR1 in which the substrate 1 and the later-described top plate portion 40 of the lid 4 are overlapped.
  • the lid 4 includes a top plate portion 40 , a plurality of first rib portions 41 and a second rib portion 42 .
  • the top plate portion 40 covers the substrate 1 .
  • the electronic component 2 is spaced apart from the top plate portion 40 and the plurality of first rib portions 41 and second rib portions 42 . Therefore, the electronic component 2 is not in contact with the top plate portion 40 , the plurality of first rib portions 41 and the second rib portions 42 .
  • the plurality of first rib portions 41 protrude from the top plate portion 40 along the direction DR1 in which the substrate 1 and the top plate portion 40 are overlapped.
  • the second rib portion 42 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 and the top plate portion 40 are overlapped.
  • each of the plurality of first rib portions 41 and second rib portions 42 protrudes from top plate portion 40 toward substrate 1 . That is, the plurality of first rib portions 41 and second rib portions 42 are configured as recesses of the lid 4 .
  • the plurality of first rib portions 41 are linear.
  • the plurality of first rib portions 41 are connected to the second rib portion 42 so as to face each other with the second rib portion 42 interposed therebetween.
  • Each of the plurality of first rib portions 41 has a linear shape when viewed from the top plate portion 40 toward the substrate 1 .
  • the plurality of first rib portions 41 are radially arranged.
  • the plurality of first rib portions 41 are radially connected to the second rib portion 42 with respect to the center of the second rib portion 42 .
  • the multiple first rib portions 41 include at least four first rib portions 41 .
  • the multiple first rib portions 41 include twelve first rib portions 41 .
  • the second rib portion 42 has an annular shape.
  • the second rib portion 42 has an annular shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1).
  • the second rib portion 42 is arranged in the center of the top plate portion 40 .
  • the center of the second rib portion 42 may be arranged at the center of the top plate portion 40 .
  • the shape of the second rib portion 42 is circular in the present embodiment, the shape of the second rib portion 42 is not limited to a circular shape as will be described later.
  • the top plate section 40 has a first section 401 and a second section 402 .
  • the first portion 401 is provided with a plurality of first rib portions 41 and second rib portions 42 . Regions of the first portion 401 that face the center of the second rib portion 42 and are sandwiched between adjacent first rib portions 41 have a point-symmetrical shape with respect to the center of the second rib portion 42 . You may have The fixing portion 5 is fixed to the second portion 402 .
  • the second part 402 surrounds the entire circumference of the first part 401 .
  • the first portion 401 of the top plate portion 40 protrudes from the second portion 402 toward the side opposite to the substrate 1 (see FIG. 1).
  • the height position of the region surrounded by the second rib portion 42 in the first portion 401 is the same as the height position of the region outside the second rib portion 42 in the first portion 401. is.
  • each of the region surrounded by the second rib portion 42 and the region outside the second rib portion 42 of the first portion 401 contacts the surface of the external device to which the lid 4 of the power conversion device 100 is attached. . Therefore, the external device can be stably installed on the lid 4 of the power converter 100 .
  • the height position of the region of the first portion 401 surrounded by the second rib portion 42 may be higher than the height position of the region of the first portion 401 outside the second rib portion 42 . good.
  • the tall electronic component 2 (see FIG. 1) can be arranged below the area surrounded by the second rib portion 42 in the first portion 401 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
  • the height position of the region of the first portion 401 surrounded by the second rib portion 42 may be lower than the height position of the region of the first portion 401 outside the second rib portion 42 . good. In this case, even if a projection is provided on the mounting surface of the external device, since the projection can be accommodated in the area surrounded by the second rib portion 42, the external device installed in the power conversion device 100 stabilizes.
  • some of the plurality of first rib portions 41 and second rib portions 42 protrude toward the side opposite to the substrate 1 (see FIG. 1), and other portions protrude toward the substrate 1 (see FIG. 1). may protrude toward the
  • the projecting directions of the plurality of first rib portions 41 and the second rib portions 42 may be determined, for example, according to the arrangement of the electronic component 2 (see FIG. 1).
  • the ends of the second rib portion 42 may be rounded. As a result, concentration of stress on the end portion of the second rib portion 42 can be suppressed, and the strength of the lid 4 is improved. Although not shown, the ends of the plurality of first rib portions 41 may be rounded.
  • the thickness of the plurality of first rib portions 41 and the second rib portions 42 may be the same as the thickness of the top plate portion 40 .
  • the plurality of first rib portions 41 and second rib portions 42 may be thinner than the top plate portion 40 . In this case, the weight of lid 4 can be reduced.
  • the material of the lid 4 is desirably a lightweight metal such as aluminum (Al) and aluminum (Al) alloy.
  • the plurality of fixing parts 5 fix the housing 3 and the lid 4 together.
  • a plurality of fixing portions 5 fix the housing 3 and the lid 4 at the second portion 402 .
  • the multiple fixing portions 5 include, for example, multiple first screws 51 .
  • the multiple first screws 51 are configured as male screws.
  • the peripheral wall portion 32 of the housing 3 is provided with a plurality of female screws.
  • Each of the multiple first screws 51 penetrates the lid 4 .
  • Each of the plurality of first screws 51 is screwed into each of the plurality of female threads provided on the peripheral wall portion 32 while the lid 4 is sandwiched between the peripheral wall portion 32 and the lid 4 .
  • each of the plurality of fixing portions 5 is arranged deviated from the extension line of the plurality of first rib portions 41 .
  • the plurality of fixing portions 5 are arranged so as to surround the plurality of first rib portions 41 and the plurality of second rib portions 42 .
  • a plurality of fixtures 6 fix the substrate 1 and the housing 3 together.
  • the multiple fixtures 6 include, for example, multiple second screws 61 and multiple supports 62 .
  • Each of the multiple second screws 61 is configured as a male screw.
  • Each of the multiple second screws 61 penetrates the substrate 1 .
  • Each of the plurality of second screws 61 is screwed into each of female threads (not shown) provided on the plurality of columns 62 while the substrate 1 is sandwiched between the columns 62 .
  • the shape of each of the plurality of struts 62 is, for example, a column or a hexagonal column.
  • Each of the multiple pillars 62 is arranged between the substrate 1 and the bottom 31 of the housing 3 . Therefore, the substrate 1 (see FIG. 1) is fixed to the bottom portion 31 of the housing 3 by the plurality of second screws 61 and the plurality of posts 62 .
  • FIG. 8 the configuration of the power converter 100 according to the first modification of the first embodiment will be described using FIGS. 8 and 9.
  • each of a plurality of first rib portions 41 and second rib portions 42 includes substrate 1 (see FIG. 1). It protrudes from the top plate part 40 toward the opposite side. That is, each of the plurality of first rib portions 41 and second rib portions 42 is configured as a convex portion of the lid 4 .
  • the housing 3 includes a plurality of heat radiation fins 33 .
  • Each of the plurality of heat radiation fins 33 is attached to the bottom portion 31 .
  • Each of the plurality of radiation fins 33 protrudes from the peripheral wall portion 32 on the side opposite to the substrate 1 (see FIG. 1).
  • the housing 3 does not have to include the plurality of heat radiating fins 33 if heat dissipation from the housing 3 is not required. Further, if heat radiation from the housing 3 is not required, the material of the housing 3 may not be a metal having high heat dissipation.
  • lid 4 further includes curved portion 45 .
  • Curved portion 45 protrudes from top plate portion 40 along direction DR1 in which substrate 1 (see FIG. 1) and top plate portion 40 are overlapped.
  • the curved portion 45 is connected to the first rib portion 41 .
  • the curved portion 45 is curved with respect to the first rib portion 41 .
  • the curved portion 45 has a curved shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1).
  • the curved portion 45 is surrounded by a dashed line.
  • the lid 4 further includes a polygonal line portion 46 .
  • Folded line portion 46 protrudes from top plate portion 40 along direction DR1 in which substrate 1 (see FIG. 1) and top plate portion 40 are overlapped.
  • the bent line portion 46 is bent with respect to the first rib portion 41 and connected to the first rib portion 41 .
  • the bent line portion 46 has a linear shape.
  • the polygonal line portion 46 is surrounded by a dashed line.
  • the shape of second rib portion 42 is the direction from top plate portion 40 toward substrate 1 (see FIG. 1). It is rectangular when viewed from 12, the shape of the second rib portion 42 is rectangular when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1), but the shape of the second rib portion 42 may be square or polygonal. good.
  • the center of the second rib portion 42 may be the same as the center of the top plate portion 40 . Further, all of the plurality of first rib portions 41 may be arranged on the same plane of the top plate portion 40 .
  • the plurality of first rib portions 41 may be arranged so as not to reach the edge of the top plate portion 40 . That is, the plurality of first rib portions 41 may be spaced apart from the edge of the top plate portion 40 .
  • second rib portion 42 has an annular shape. Therefore, in a cross section passing through both the first rib portion 41 and the second rib portion 42, the section modulus of the lid 4 is larger than when the second rib portion 42 is not provided. Therefore, the rigidity of the lid 4 is sufficiently high. Therefore, deformation of the lid 4 can be suppressed.
  • the rigidity of the lid 4 is sufficiently high, a lightweight material can be used as the material for the lid 4.
  • a lightweight material can be used as the material for the lid 4.
  • aluminum (Al) and an aluminum (Al) alloy can be used as the material of the lid 4 . Therefore, it is possible to achieve both improvement in rigidity and reduction in weight of the lid 4 .
  • the lid 4 that achieves both improved rigidity and reduced weight is particularly effective in applications requiring weight reduction, such as the on-vehicle power conversion device 100 .
  • each of the plurality of first rib portions 41 and second rib portions 42 protrudes from the top plate portion 40 toward the substrate 1 . Therefore, it is possible to prevent the lid 4 from protruding toward the outside of the housing 3 . Therefore, it is possible to prevent the plurality of first rib portions 41 and the second rib portions 42 from interfering with the external device to which the power conversion device 100 is attached. Therefore, external devices can be stably arranged on the lid 4 .
  • each of the plurality of first rib portions 41 and second rib portions 42 protrudes from the top plate portion 40 toward the substrate 1 . Therefore, it is possible to prevent the lid 4 from protruding toward the outside of the housing 3 . Therefore, the height dimension of the power conversion device 100 can be reduced.
  • each of the plurality of fixing portions 5 is arranged deviated from the extension line of the plurality of first rib portions 41 .
  • the rigidity of the lid 4 at a position shifted from the extension line of the plurality of first rib portions 41 is lower than the rigidity of the lid 4 at the extension line of the plurality of first rib portions 41 . Therefore, the rigidity of the lid 4 can be effectively improved by fixing the lid 4 to the housing 3 with the plurality of fixing portions 5 at positions deviated from the extension lines of the plurality of first rib portions 41 .
  • the first portion 401 of the top plate portion 40 protrudes from the second portion 402 in the direction opposite to the substrate 1 (see FIG. 1). Therefore, the height position of the first portion 401 is different from the height position of the second portion 402 . Therefore, the section modulus of the top plate portion 40 is larger than when the height position of the first portion 401 and the height position of the second portion 402 are the same. Therefore, the rigidity of the top plate portion 40 is sufficiently high.
  • the first portion 401 of the top plate portion 40 protrudes from the second portion 402 toward the side opposite to the substrate 1 (see FIG. 1). Therefore, the first portion 401 protrudes outward from the housing 3 . Therefore, the volume of the space inside the housing 3 is larger than when the height position of the first portion 401 and the height position of the second portion 402 are the same. Therefore, the degree of freedom in arranging the electronic components 2 in the housing 3 is improved.
  • the electronic component 2 is spaced apart from the multiple first rib portions 41 and the second rib portions 42 . Therefore, the electronic component 2 does not come into contact with the multiple first rib portions 41 and the second rib portions 42 . Therefore, the insulation distance between the electronic component 2 and the plurality of first rib portions 41 and second rib portions 42 can be ensured. Therefore, it is possible to electrically insulate the electronic component 2 from the plurality of first rib portions 41 and the second rib portions 42 .
  • the plurality of first rib portions 41 are radially arranged. Therefore, the section modulus of the lid 4 is larger than when the plurality of first rib portions 41 are linearly arranged. Therefore, the rigidity of the lid 4 is sufficiently high.
  • the shape of the second rib portion 42 is circular.
  • the area of the circular second rib portion 42 is smaller than the area of the rectangular second rib portion 42 . Therefore, the length of the second rib portion 42 can be increased while the area inside the second rib portion 42 is kept small.
  • the area in which the plurality of first rib portions 41 can be arranged is increased. Therefore, the plurality of first rib portions 41 and second rib portions 42 can be lengthened. Thereby, the section modulus of the lid 4 is large. Therefore, the rigidity of the lid 4 is sufficiently high.
  • the stress applied to the second rib portion 42 when twisting is applied to the lid 4 is suppressed from concentrating at some locations. distributed because Therefore, the effect of increasing the rigidity of the lid 4 is obtained.
  • the second rib portion 42 is circular, the first rib portions 41 radially extending from the second rib portion 42 can be arranged at equal angles. Therefore, the effect of suppressing the concentration of stress between adjacent first rib portions 41 can be obtained. Further, molding of the second rib portion 42 is easy.
  • the top plate portion 40 is not provided with holes such as ventilation holes, so that the effect of suppressing stress concentration when force is applied to the lid 4 can be obtained.
  • the lid 4 since there is no need to provide a component for preventing dust and moisture from entering, the lid 4 can be prevented from being degraded in earthquake resistance.
  • the center of the second rib portion 42 is the same as the center of the top plate portion 40 .
  • the center of the second rib portion 42 is arranged to coincide with the center of the first portion 401 of the top plate portion 40 .
  • the section modulus of the lid 4 can be increased, the effect of increasing the rigidity can be obtained.
  • the length of each rib of the first rib portion 41 is the longest, sheet metal working is easy.
  • warpage during molding can be suppressed even when working using a mold. Therefore, an effect of facilitating processing can be obtained.
  • the plurality of first rib portions 41 are all arranged on the same plane of the top plate portion 40 . Specifically, all of the plurality of first rib portions 41 are arranged on the first portion 401 of the top plate portion 40 .
  • the plurality of first rib portions 41 are arranged apart from the edge of the top plate portion 40 . Specifically, all of the plurality of first rib portions 41 are arranged so as not to reach the edge side of the first portion 401 . Therefore, it is possible to obtain the effect of facilitating molding with sheet metal. Moreover, when the first rib portion 41 is arranged on the first portion 401 , the height between the second portion 402 and the first portion 401 is increased, so that the tall electronic component 2 is mounted on the substrate 1 . can be placed. As a result, it is possible to obtain the effect of improving the degree of freedom in arranging the electronic component 2 .
  • each of the plurality of first rib portions 41 and the second rib portions 42 is formed on the substrate 1 (FIG. 1 ) protrudes from the top plate portion 40 toward the opposite side. Therefore, it is possible to increase the distance between the plurality of first rib portions 41 and second rib portions 42 and the substrate 1 (see FIG. 1). Therefore, it is possible to prevent the arrangement and height of electronic component 2 (see FIG. 1) from being restricted by the plurality of first rib portions 41 and second rib portions 42 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
  • lid 4 further includes curved portion 45 as shown in FIG.
  • the curved portion 45 is curved with respect to the first rib portion 41 . Therefore, the interval between the first rib portions 41 adjacent to the curved portion 45 and the curved portion 45 is larger than the interval when the first rib portions 41 are adjacent to each other. Therefore, compared with the case where the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, the degree of freedom in arranging the tall electronic components 2 (see FIG. 1) in the housing 3 is improved. do.
  • the length of the portion (rib) protruding from the top plate portion 40 is longer due to the curved portion 45 than when the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, The rigidity of the lid 4 is further increased.
  • the lid 4 further includes a fold line portion 46, as shown in FIG.
  • the bent line portion 46 is connected to the first rib portion 41 . Since the interval between the fold line portion 46 and the first rib portion 41 adjacent to the first rib portion 41 to which the fold line portion 46 is connected can be reduced, the rigidity of the lid 4 is improved. In addition, since the length of the portion (rib) protruding from the top plate portion 40 is longer due to the fold line portion 46 than when the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, The rigidity of the lid 4 is further increased.
  • the shape of the second rib portion 42 is rectangular when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1). is.
  • the shape of the second rib portion 42 is a rectangle
  • the second rib portion 42 is a circle or an ellipse having the same diameter as the long dimension or width dimension of the rectangle and inscribed in the rectangle.
  • the area surrounded by the second rib portion 42 is large. Therefore, it is easy to arrange a tall electronic component 2 (see FIG. 1) below the area surrounded by the second rib portions 42 . That is, the degree of freedom of arrangement of the electronic component 2 (see FIG. 1) is improved.
  • Embodiment 2 Next, the configuration of the power conversion device 100 according to Embodiment 2 will be described with reference to FIG. 13 .
  • the second embodiment has the same configuration and effects as those of the first embodiment unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
  • adjacent first rib portions 41 among the plurality of first rib portions 41 of power converter 100 according to the present embodiment are equiangular with respect to the center of second rib portion 42 . are placed in Therefore, the angle ⁇ formed by adjacent first rib portions 41 among the plurality of first rib portions 41 is equal to the angle ⁇ formed by other adjacent first rib portions 41 .
  • the plurality of first rib portions 41 are arranged point-symmetrically with respect to the center of the second rib portion 42 .
  • the effects of this embodiment will be described.
  • the shape of the top plate portion 40 (the area of the lid 4 where the first rib portion 41 is not provided) is point-symmetrical with respect to the center of the second rib portion 42 . Therefore, concentration of stress on the lid 4 is suppressed more than when the shape of the lid 4 is asymmetrical. Therefore, the rigidity of the lid 4 is sufficiently high.
  • Embodiment 3 Next, the configuration of the power conversion device 100 according to Embodiment 3 will be described with reference to FIG. 14 .
  • Embodiment 3 has the same configuration and effects as those of Embodiment 1 described above unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
  • an angle ⁇ 1 formed by adjacent first rib portions 41 among the plurality of first rib portions 41 of power conversion device 100 is equal to the angle ⁇ 1 between other adjacent first rib portions 41 .
  • the angles ⁇ 2 and ⁇ 3 formed by the rib portions 41 are different from each other. That is, the shape of the top plate portion 40 is asymmetrical.
  • the angle ⁇ 1 formed by adjacent first rib portions 41 among the plurality of first rib portions 41 is It is different from the angle ⁇ 2 formed by the matching first rib portions 41 . Therefore, the first rib portion 41 can be arranged according to the position of the electronic component 2 (see FIG. 1) arranged inside the housing 3 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
  • Embodiment 4 Next, the configuration of the power conversion device 100 according to Embodiment 4 will be described with reference to FIG. 15 .
  • the fourth embodiment has the same configuration and effects as those of the first embodiment unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
  • the lid 4 of the power converter 100 further includes a third rib portion 43.
  • the third rib portion 43 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 (see FIG. 1) and the top plate portion 40 are overlapped.
  • the third rib portion 43 protrudes from the top plate portion 40 toward the side opposite to the substrate 1 (see FIG. 1).
  • the electronic component 2 (see FIG. 1) is spaced apart from the third rib portion 43 .
  • the third rib portion 43 has an annular shape.
  • the third rib portion 43 has an annular shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1).
  • the shape of the third rib portion 43 is, for example, circular and rectangular. In FIG. 15, the shape of the third rib portion 43 is rectangular.
  • a plurality of first rib portions 41 may be connected to the third rib portion 43 .
  • the third rib portion 43 is arranged outside the second rib portion 42 .
  • the plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are connected to each other.
  • the first rib portion 41 is not arranged inside the third rib portion 43 .
  • lid 4 further includes third rib portion 43 as shown in FIG. 15 .
  • the third rib portion 43 is arranged outside the second rib portion 42 .
  • the third rib portion 43 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 (see FIG. 1) and the top plate portion 40 are overlapped.
  • the first rib portion 41 is not arranged inside the third rib portion 43 . Therefore, a tall electronic component 2 (see FIG. 1) can be arranged below the inner side of the third rib portion 43 . If the third rib portion 43 is not provided and if the third rib portion 43 is arranged inside the second rib portion 42, the area where the tall electronic component 2 (see FIG.
  • the third rib portion 43 is arranged outside the second rib portion 42, so that the tall electronic component 2 (see FIG. 1) is placed inside the third rib portion 43. It can also be placed below. Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
  • the plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are connected to each other. Therefore, it is possible to reduce the area of the lid 4 where the plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are not provided. Therefore, the section modulus of the lid 4 can be increased by the plurality of first rib portions 41 , second rib portions 42 and third rib portions 43 . Therefore, the rigidity of the lid 4 is improved by the first rib portion 41 , the second rib portion 42 and the third rib portion 43 .

Abstract

This power conversion device comprises a substrate (1), a casing (3), and a lid (4). The lid (4) is disposed on the side of the substrate (1) that is opposite from a bottom section (31) of the casing (3). The lid (4) includes a top plate section (40), a plurality of first rib sections (41), and a second rib section (42). The top plate section (40) covers the substrate (1). The plurality of first rib sections (41) protrude from the top plate section (40) along a direction (DR1) in which the substrate (1) and the top plate section (40) overlap. The second rib section (42) protrudes from the top plate section (40) along the direction (DR1) in which the substrate (1) and the top plate section (40) overlap. The plurality of first rib sections (41) are linear. The plurality of first rib sections (41) are connected to the second rib section (42) so as to face each other with the second rib section (42) sandwiched therebetween. The second rib section (42) has an annular shape.

Description

電力変換装置power converter
　本開示は、電力変換装置に関するものである。 The present disclosure relates to a power converter.
　電力変換装置の筐体に設けられた開口部を覆う蓋には、耐振性の向上のために高いヤング率を有することにより高い剛性を有する鉄が用いられることがある。一方で、車載向け等の電力変換装置には軽量化も求められている。例えば、アルミニウム製の蓋は、鉄製の蓋よりも軽量である。一方で、アルミニウムのヤング率が低いため、アルミニウム製の蓋の剛性が低いという課題がある。例えば、特開２００５－３４８５０６号公報（特許文献１）に記載の車載用電力変換装置（電力変換装置）では、蓋の剛性の向上のために、外装カバー（蓋）が天板部と、天板部から突出した凸部とを有している。 Iron, which has a high Young's modulus and high rigidity, is sometimes used for the lid that covers the opening provided in the housing of the power converter, in order to improve vibration resistance. On the other hand, there is also a demand for weight reduction in power converters for vehicles and the like. For example, aluminum lids are lighter than steel lids. On the other hand, since the Young's modulus of aluminum is low, there is a problem that the rigidity of the lid made of aluminum is low. For example, in the in-vehicle power conversion device (power conversion device) disclosed in Japanese Patent Application Laid-Open No. 2005-348506 (Patent Document 1), the outer cover (lid) has a top plate portion and a top plate portion in order to improve the rigidity of the lid. and a convex portion projecting from the plate portion.
特開２００５－３４８５０６号公報JP 2005-348506 A
　上記公報に記載の電力変換装置（車載用電力変換装置）では、凸部は、直線のみからなる。このため、蓋（外装カバー）の断面係数が十分に大きくない。よって、蓋の剛性が十分に高くない。 In the power conversion device (in-vehicle power conversion device) described in the above publication, the convex portion consists only of straight lines. Therefore, the section modulus of the lid (exterior cover) is not sufficiently large. Therefore, the rigidity of the lid is not sufficiently high.
　本開示は上記課題に鑑みてなされたものであり、その目的は、蓋の剛性が十分に高い電力変換装置を提供することである。 The present disclosure has been made in view of the above problems, and an object thereof is to provide a power conversion device whose lid has sufficiently high rigidity.
　本開示の電力変換装置は、基板と、筐体と、蓋とを備えている。筐体は、底部を含んでいる。底部には、基板が配置されている。蓋は、基板に対して筐体の底部とは反対側に配置されている。蓋は、天板部と、複数の第１リブ部と、第２リブ部とを含んでいる。天板部は、基板を覆っている。複数の第１リブ部は、基板と天板部とが重ねられた方向に沿って天板部から突出している。第２リブ部は、基板と天板部とが重ねられた方向に沿って天板部から突出している。複数の第１リブ部は、直線状である。複数の第１リブ部は、第２リブ部を挟んで向かい合うように第２リブ部に接続されている。第２リブ部は、環形状を有している。 A power conversion device of the present disclosure includes a substrate, a housing, and a lid. The housing includes a bottom. A substrate is placed on the bottom. The lid is arranged on the opposite side of the substrate from the bottom of the housing. The lid includes a top plate portion, a plurality of first rib portions, and a second rib portion. The top plate portion covers the substrate. The plurality of first rib portions protrude from the top plate portion along the direction in which the substrate and the top plate portion are stacked. The second rib portion protrudes from the top plate portion along the direction in which the substrate and the top plate portion are overlapped. The plurality of first rib portions are linear. The plurality of first rib portions are connected to the second rib portion so as to face each other with the second rib portion interposed therebetween. The second rib portion has an annular shape.
　本開示の電力変換装置によれば、第２リブ部は、環形状を有している。このため、第１リブ部および第２リブ部の両方を通る断面において、第２リブ部が設けられていない場合よりも、蓋の断面係数が大きい。よって、蓋の剛性が十分に高い。 According to the power conversion device of the present disclosure, the second rib portion has an annular shape. Therefore, in a cross section passing through both the first rib portion and the second rib portion, the section modulus of the lid is larger than when the second rib portion is not provided. Therefore, the rigidity of the lid is sufficiently high.
実施の形態１に係る電力変換装置の構成を概略的に示す分解斜視図である。1 is an exploded perspective view schematically showing the configuration of a power converter according to Embodiment 1; FIG. 実施の形態１に係る電力変換装置の構成を概略的に示す斜視図である。1 is a perspective view schematically showing the configuration of a power converter according to Embodiment 1; FIG. 実施の形態１に係る電力変換装置の構成を概略的に示す上面図である。1 is a top view schematically showing the configuration of a power converter according to Embodiment 1; FIG. 実施の形態１に係る電力変換装置の蓋の構成を概略的に示す上面図である。2 is a top view schematically showing the configuration of the lid of the power converter according to Embodiment 1; FIG. 図４のＶ－Ｖ線に沿った断面図である。FIG. 5 is a cross-sectional view taken along line VV of FIG. 4; 図４のＶＩ－ＶＩ線に沿った断面図である。FIG. 5 is a cross-sectional view taken along line VI-VI of FIG. 4; 図６のＶＩＩ領域の拡大図である。FIG. 7 is an enlarged view of region VII of FIG. 6; 実施の形態１の第１の変形例に係る電力変換装置の構成を概略的に示す斜視図である。FIG. 3 is a perspective view schematically showing the configuration of a power conversion device according to a first modification of Embodiment 1; 実施の形態１の第１の変形例に係る電力変換装置の構成を概略的に示す側面図である。FIG. 4 is a side view schematically showing the configuration of a power conversion device according to a first modification of the first embodiment; 実施の形態１の第２の変形例に係る電力変換装置の構成を概略的に示す上面図である。FIG. 4 is a top view schematically showing the configuration of a power conversion device according to a second modification of the first embodiment; 実施の形態１の第３の変形例に係る電力変換装置の構成を概略的に示す上面図である。FIG. 10 is a top view schematically showing the configuration of a power converter according to a third modification of the first embodiment; 実施の形態１の第４の変形例に係る電力変換装置の構成を概略的に示す上面図である。FIG. 11 is a top view schematically showing the configuration of a power conversion device according to a fourth modification of the first embodiment; 実施の形態２に係る電力変換装置の構成を概略的に示す上面図である。FIG. 7 is a top view schematically showing the configuration of a power conversion device according to Embodiment 2; 実施の形態３に係る電力変換装置の構成を概略的に示す上面図である。FIG. 11 is a top view schematically showing the configuration of a power conversion device according to Embodiment 3; 実施の形態４に係る電力変換装置の構成を概略的に示す上面図である。FIG. 11 is a top view schematically showing the configuration of a power conversion device according to Embodiment 4;
　以下、実施の形態について図に基づいて説明する。なお、以下では、同一または相当する部分に同一の符号を付すものとし、重複する説明は繰り返さない。 Embodiments will be described below based on the drawings. In addition, below, the same code|symbol shall be attached|subjected to the same or corresponding part, and the overlapping description is not repeated.
　実施の形態１．
　図１～図７を用いて、実施の形態１に係る電力変換装置１００の構成を説明する。 Embodiment 1.
The configuration of a power converter 100 according to Embodiment 1 will be described with reference to FIGS. 1 to 7. FIG.
　図１に示されるように、電力変換装置１００は、基板１と、筐体３と、蓋４とを含んでいる。本実施の形態において、電力変換装置１００は、電子部品２と、複数の固定部５と、複数の固定具６とをさらに含んでいる。 As shown in FIG. 1, the power conversion device 100 includes a substrate 1, a housing 3, and a lid 4. In the present embodiment, the power conversion device 100 further includes an electronic component 2 , a plurality of fixing parts 5 and a plurality of fixtures 6 .
　基板１は、電力変換回路として構成されている。基板１の形状は、平板状である。基板１は、表面１ａと、表面１ａに対向する裏面１ｂとを含んでいる。図１では、電子部品２は、基板１の表面１ａにのみ配置されているが、裏面１ｂに配置されていてもよい。 The board 1 is configured as a power conversion circuit. The substrate 1 has a flat plate shape. The substrate 1 includes a front surface 1a and a back surface 1b facing the front surface 1a. In FIG. 1, the electronic component 2 is arranged only on the front surface 1a of the substrate 1, but may be arranged on the back surface 1b.
　電子部品２は、基板１に接続されている。電子部品２は、例えば、金属酸化物半導体電界効果トランジスタ（ＭＯＳＦＥＴ：Metal　Oxide　Semiconductor　Field　Effect　Transistor）等の半導体素子、モーターリレー、コイル、コンデンサー等である。電子部品２は、発熱素子である。 The electronic component 2 is connected to the substrate 1. The electronic component 2 is, for example, a semiconductor element such as a metal oxide semiconductor field effect transistor (MOSFET: Metal Oxide Semiconductor Field Effect Transistor), a motor relay, a coil, a capacitor, or the like. The electronic component 2 is a heating element.
　筐体３は、底部３１と、周壁部３２とを含んでいる。底部３１には、基板１が配置されている。周壁部３２は、底部３１から立ち上がっている。周壁部３２は、基板１の全周を囲っている。電子部品２によって生じた熱は、底部３１および周壁部３２を伝って筐体３の外に放熱される。望ましくは、筐体３の材料は、アルミニウム合金等の高い放熱性を有する金属である。筐体３は、後述されるように複数の放熱フィンを含んでいてもよい。筐体３は、蓋４に向かって開口している。 The housing 3 includes a bottom portion 31 and a peripheral wall portion 32. The substrate 1 is arranged on the bottom portion 31 . The peripheral wall portion 32 rises from the bottom portion 31 . The peripheral wall portion 32 surrounds the entire circumference of the substrate 1 . Heat generated by the electronic component 2 is radiated outside the housing 3 through the bottom portion 31 and the peripheral wall portion 32 . Desirably, the material of the housing 3 is a metal with high heat dissipation such as an aluminum alloy. The housing 3 may include a plurality of heat radiating fins as described later. The housing 3 opens toward the lid 4 .
　蓋４は、筐体３の開口を覆っている。蓋４は、基板１に対して筐体３の底部３１とは反対側に配置されている。蓋４は、筐体３の周壁部３２に固定部５によって固定されている。蓋４は、電子部品２から高さ方向の間隔を空けて配置されている。なお、本実施の形態において、高さ方向は、基板１と蓋４の後述される天板部４０とが重ねられた方向ＤＲ１に沿っている。 The lid 4 covers the opening of the housing 3. The lid 4 is arranged on the side opposite to the bottom 31 of the housing 3 with respect to the substrate 1 . The lid 4 is fixed to the peripheral wall portion 32 of the housing 3 by the fixing portion 5 . The lid 4 is arranged with a space in the height direction from the electronic component 2 . In the present embodiment, the height direction is along the direction DR1 in which the substrate 1 and the later-described top plate portion 40 of the lid 4 are overlapped.
　蓋４は、天板部４０と、複数の第１リブ部４１と、第２リブ部４２とを含んでいる。天板部４０は、基板１を覆っている。電子部品２は、天板部４０、複数の第１リブ部４１および第２リブ部４２から間隔を空けて配置されている。このため、電子部品２は、天板部４０、複数の第１リブ部４１および第２リブ部４２と接触していない。 The lid 4 includes a top plate portion 40 , a plurality of first rib portions 41 and a second rib portion 42 . The top plate portion 40 covers the substrate 1 . The electronic component 2 is spaced apart from the top plate portion 40 and the plurality of first rib portions 41 and second rib portions 42 . Therefore, the electronic component 2 is not in contact with the top plate portion 40 , the plurality of first rib portions 41 and the second rib portions 42 .
　図１および図２に示されるように、複数の第１リブ部４１は、基板１と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。第２リブ部４２は、基板１と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。本実施の形態において、複数の第１リブ部４１および第２リブ部４２の各々は、基板１に向かって天板部４０から突出している。すなわち、複数の第１リブ部４１および第２リブ部４２は、蓋４の凹部として構成されている。 As shown in FIGS. 1 and 2, the plurality of first rib portions 41 protrude from the top plate portion 40 along the direction DR1 in which the substrate 1 and the top plate portion 40 are overlapped. The second rib portion 42 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 and the top plate portion 40 are overlapped. In the present embodiment, each of the plurality of first rib portions 41 and second rib portions 42 protrudes from top plate portion 40 toward substrate 1 . That is, the plurality of first rib portions 41 and second rib portions 42 are configured as recesses of the lid 4 .
　複数の第１リブ部４１は、直線状である。複数の第１リブ部４１は、第２リブ部４２を挟んで向かい合うように第２リブ部４２に接続されている。複数の第１リブ部４１の各々の形状は、天板部４０から基板１に向かう方向から見て直線状である。 The plurality of first rib portions 41 are linear. The plurality of first rib portions 41 are connected to the second rib portion 42 so as to face each other with the second rib portion 42 interposed therebetween. Each of the plurality of first rib portions 41 has a linear shape when viewed from the top plate portion 40 toward the substrate 1 .
　図３および図４に示されるように、複数の第１リブ部４１は、放射状に配置されている。複数の第１リブ部４１は、第２リブ部４２の中心に対して放射状に第２リブ部４２に接続されている。複数の第１リブ部４１は、少なくとも４つの第１リブ部４１を含んでいる。本実施の形態において、複数の第１リブ部４１は、１２個の第１リブ部４１を含んでいる。 As shown in FIGS. 3 and 4, the plurality of first rib portions 41 are radially arranged. The plurality of first rib portions 41 are radially connected to the second rib portion 42 with respect to the center of the second rib portion 42 . The multiple first rib portions 41 include at least four first rib portions 41 . In the present embodiment, the multiple first rib portions 41 include twelve first rib portions 41 .
　第２リブ部４２は、環形状を有している。第２リブ部４２は、天板部４０から基板１（図１参照）に向かう方向から見て環形状を有している。第２リブ部４２は、天板部４０の中央に配置されている。第２リブ部４２の中心は、天板部４０の中心に配置されていてもよい。本実施の形態において第２リブ部４２の形状は円形であるが、後述されるように第２リブ部４２の形状は円形に限られない。 The second rib portion 42 has an annular shape. The second rib portion 42 has an annular shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1). The second rib portion 42 is arranged in the center of the top plate portion 40 . The center of the second rib portion 42 may be arranged at the center of the top plate portion 40 . Although the shape of the second rib portion 42 is circular in the present embodiment, the shape of the second rib portion 42 is not limited to a circular shape as will be described later.
　天板部４０は、第１部４０１と、第２部４０２とを有している。第１部４０１には、複数の第１リブ部４１および第２リブ部４２が設けられている。第１部４０１のうち第２リブ部４２の中心に対して向かい合いかつ隣り合う第１リブ部４１同士に挟み込まれた領域同士は、第２リブ部４２の中心に対して点対称な形状を有していてもよい。第２部４０２には、固定部５が固定されている。第２部４０２は、第１部４０１の全周を囲っている。 The top plate section 40 has a first section 401 and a second section 402 . The first portion 401 is provided with a plurality of first rib portions 41 and second rib portions 42 . Regions of the first portion 401 that face the center of the second rib portion 42 and are sandwiched between adjacent first rib portions 41 have a point-symmetrical shape with respect to the center of the second rib portion 42 . You may have The fixing portion 5 is fixed to the second portion 402 . The second part 402 surrounds the entire circumference of the first part 401 .
　図５および図６に示されるように、天板部４０の第１部４０１は、第２部４０２よりも基板１（図１参照）とは反対側に向かって突出している。図５および図６では、第１部４０１のうち第２リブ部４２に囲まれた領域の高さ位置は、第１部４０１のうち第２リブ部４２の外側の領域の高さ位置と同じである。この場合、第１部４０１のうち第２リブ部４２に囲まれた領域および第２リブ部４２の外側の領域の各々が電力変換装置１００の蓋４の組み付け先の外部機器の面に接触する。このため、外部機器を電力変換装置１００の蓋４上に安定した状態で設置することができる。 As shown in FIGS. 5 and 6, the first portion 401 of the top plate portion 40 protrudes from the second portion 402 toward the side opposite to the substrate 1 (see FIG. 1). 5 and 6, the height position of the region surrounded by the second rib portion 42 in the first portion 401 is the same as the height position of the region outside the second rib portion 42 in the first portion 401. is. In this case, each of the region surrounded by the second rib portion 42 and the region outside the second rib portion 42 of the first portion 401 contacts the surface of the external device to which the lid 4 of the power conversion device 100 is attached. . Therefore, the external device can be stably installed on the lid 4 of the power converter 100 .
　図示されないが、第１部４０１のうち第２リブ部４２に囲まれた領域の高さ位置は、第１部４０１のうち第２リブ部４２の外側の領域の高さ位置よりも高くてもよい。この場合、第１部４０１のうち第２リブ部４２に囲まれた領域の下方に背の高い電子部品２（図１参照）を配置することができる。このため、電子部品２（図１参照）の配置の自由度が向上する。 Although not shown, the height position of the region of the first portion 401 surrounded by the second rib portion 42 may be higher than the height position of the region of the first portion 401 outside the second rib portion 42 . good. In this case, the tall electronic component 2 (see FIG. 1) can be arranged below the area surrounded by the second rib portion 42 in the first portion 401 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
　図示されないが、第１部４０１のうち第２リブ部４２に囲まれた領域の高さ位置は、第１部４０１のうち第２リブ部４２の外側の領域の高さ位置よりも低くてもよい。この場合、外部機器の載置面に突起が設けられている場合でも、当該突起を第２リブ部４２に囲まれた領域に収容することができるため、電力変換装置１００に設置された外部機器が安定する。 Although not shown, the height position of the region of the first portion 401 surrounded by the second rib portion 42 may be lower than the height position of the region of the first portion 401 outside the second rib portion 42 . good. In this case, even if a projection is provided on the mounting surface of the external device, since the projection can be accommodated in the area surrounded by the second rib portion 42, the external device installed in the power conversion device 100 stabilizes.
　図示されないが、複数の第１リブ部４１および第２リブ部４２のうち一部が基板１（図１参照）とは反対側に向かって突出し、他の一部が基板１（図１参照）に向かって突出していてもよい。複数の第１リブ部４１および第２リブ部４２の突出方向は、例えば、電子部品２（図１参照）の配置に応じて定められてもよい。 Although not shown, some of the plurality of first rib portions 41 and second rib portions 42 protrude toward the side opposite to the substrate 1 (see FIG. 1), and other portions protrude toward the substrate 1 (see FIG. 1). may protrude toward the The projecting directions of the plurality of first rib portions 41 and the second rib portions 42 may be determined, for example, according to the arrangement of the electronic component 2 (see FIG. 1).
　図６および図７に示されるように、第２リブ部４２の端部は、丸みを帯びていてもよい。これにより、第２リブ部４２の端部に応力が集中することを抑制することができるため、蓋４の強度が向上する。図示されないが、複数の第１リブ部４１の端部が丸みを帯びていてもよい。 As shown in FIGS. 6 and 7, the ends of the second rib portion 42 may be rounded. As a result, concentration of stress on the end portion of the second rib portion 42 can be suppressed, and the strength of the lid 4 is improved. Although not shown, the ends of the plurality of first rib portions 41 may be rounded.
　複数の第１リブ部４１および第２リブ部４２の厚みは、天板部４０の厚みと同じであってもよい。図示されないが、複数の第１リブ部４１および第２リブ部４２は、天板部４０よりも薄くてもよい。この場合、蓋４の重量を低減することができる。 The thickness of the plurality of first rib portions 41 and the second rib portions 42 may be the same as the thickness of the top plate portion 40 . Although not shown, the plurality of first rib portions 41 and second rib portions 42 may be thinner than the top plate portion 40 . In this case, the weight of lid 4 can be reduced.
　蓋４の材料は、望ましくは、例えば、アルミニウム（Ａｌ）およびアルミニウム（Ａｌ）合金等の軽量な金属である。 The material of the lid 4 is desirably a lightweight metal such as aluminum (Al) and aluminum (Al) alloy.
　図１～図３に示されるように、複数の固定部５は、筐体３と蓋４とを固定している。複数の固定部５は、第２部４０２において、筐体３と蓋４とを固定している。複数の固定部５は、例えば、複数の第１ネジ５１を含んでいる。複数の第１ネジ５１は、雄ネジとして構成されている。複数の第１ネジ５１が雄ネジとして構成されている場合、筐体３の周壁部３２には複数の雌ネジが設けられている。複数の第１ネジ５１の各々は、蓋４を貫通している。複数の第１ネジ５１の各々は、蓋４を周壁部３２とで挟み込んだ状態で、周壁部３２に設けられた複数の雌ネジの各々にそれぞれ螺合している。 　As shown in FIGS. 1 to 3, the plurality of fixing parts 5 fix the housing 3 and the lid 4 together. A plurality of fixing portions 5 fix the housing 3 and the lid 4 at the second portion 402 . The multiple fixing portions 5 include, for example, multiple first screws 51 . The multiple first screws 51 are configured as male screws. When the plurality of first screws 51 are configured as male screws, the peripheral wall portion 32 of the housing 3 is provided with a plurality of female screws. Each of the multiple first screws 51 penetrates the lid 4 . Each of the plurality of first screws 51 is screwed into each of the plurality of female threads provided on the peripheral wall portion 32 while the lid 4 is sandwiched between the peripheral wall portion 32 and the lid 4 .
　図３に示されるように、本実施の形態において、複数の固定部５の各々は、複数の第１リブ部４１の延長線からずれて配置されている。複数の固定部５は、複数の第１リブ部４１および複数の第２リブ部４２を囲むように配置されている。 As shown in FIG. 3 , in the present embodiment, each of the plurality of fixing portions 5 is arranged deviated from the extension line of the plurality of first rib portions 41 . The plurality of fixing portions 5 are arranged so as to surround the plurality of first rib portions 41 and the plurality of second rib portions 42 .
　図１に示されるように、複数の固定具６は、基板１と筐体３とを固定している。複数の固定具６は、例えば、複数の第２ネジ６１と、複数の支柱６２とを含んでいる。複数の第２ネジ６１の各々は、雄ネジとして構成されている。複数の第２ネジ６１の各々は、基板１を貫通している。複数の第２ネジ６１の各々は、基板１を支柱６２とで挟み込んだ状態で、複数の支柱６２に設けられた図示されない雌ネジの各々にそれぞれ螺合している。複数の支柱６２の各々の形状は、例えば、円柱または六角柱等である。複数の支柱６２の各々は、基板１と筐体３の底部３１との間に配置されている。このため、複数の第２ネジ６１および複数の支柱６２によって、基板１（図１参照）が筐体３の底部３１に固定されている。 As shown in FIG. 1, a plurality of fixtures 6 fix the substrate 1 and the housing 3 together. The multiple fixtures 6 include, for example, multiple second screws 61 and multiple supports 62 . Each of the multiple second screws 61 is configured as a male screw. Each of the multiple second screws 61 penetrates the substrate 1 . Each of the plurality of second screws 61 is screwed into each of female threads (not shown) provided on the plurality of columns 62 while the substrate 1 is sandwiched between the columns 62 . The shape of each of the plurality of struts 62 is, for example, a column or a hexagonal column. Each of the multiple pillars 62 is arranged between the substrate 1 and the bottom 31 of the housing 3 . Therefore, the substrate 1 (see FIG. 1) is fixed to the bottom portion 31 of the housing 3 by the plurality of second screws 61 and the plurality of posts 62 .
　次に、図８および図９を用いて、実施の形態１の第１の変形例に係る電力変換装置１００の構成を説明する。 Next, the configuration of the power converter 100 according to the first modification of the first embodiment will be described using FIGS. 8 and 9. FIG.
　図８に示されるように、実施の形態１の第１の変形例に係る電力変換装置１００では、複数の第１リブ部４１および第２リブ部４２の各々は、基板１（図１参照）とは反対側に向かって天板部４０から突出している。すなわち、複数の第１リブ部４１および第２リブ部４２の各々は、蓋４の凸部として構成されている。 As shown in FIG. 8, in power conversion device 100 according to the first modification of Embodiment 1, each of a plurality of first rib portions 41 and second rib portions 42 includes substrate 1 (see FIG. 1). It protrudes from the top plate part 40 toward the opposite side. That is, each of the plurality of first rib portions 41 and second rib portions 42 is configured as a convex portion of the lid 4 .
　図９に示されるように、実施の形態１の第１の変形例において、筐体３は、複数の放熱フィン３３を含んでいる。複数の放熱フィン３３の各々は、底部３１に取り付けられている。複数の放熱フィン３３の各々は、周壁部３２に対して基板１（図１参照）とは反対側に突出している。なお、筐体３の放熱が必要でない場合は、筐体３は複数の放熱フィン３３を含んでいなくてもよい。また、筐体３の放熱が必要でない場合は、筐体３の材料は高い放熱性を有する金属でなくてもよい。 As shown in FIG. 9 , in the first modification of Embodiment 1, the housing 3 includes a plurality of heat radiation fins 33 . Each of the plurality of heat radiation fins 33 is attached to the bottom portion 31 . Each of the plurality of radiation fins 33 protrudes from the peripheral wall portion 32 on the side opposite to the substrate 1 (see FIG. 1). Note that the housing 3 does not have to include the plurality of heat radiating fins 33 if heat dissipation from the housing 3 is not required. Further, if heat radiation from the housing 3 is not required, the material of the housing 3 may not be a metal having high heat dissipation.
　次に、図１０を用いて、実施の形態１の第２の変形例に係る電力変換装置１００の構成を説明する。 Next, using FIG. 10, the configuration of the power converter 100 according to the second modification of the first embodiment will be described.
　図１０に示されるように、実施の形態１の第２の変形例に係る電力変換装置１００では、蓋４は、湾曲部４５をさらに含んでいる。湾曲部４５は、基板１（図１参照）と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。湾曲部４５は、第１リブ部４１に接続されている。湾曲部４５は、第１リブ部４１に対して湾曲している。湾曲部４５は、天板部４０から基板１（図１参照）に向かう方向から見て曲線形状を有している。なお、図１０では、湾曲部４５は、一点鎖線によって囲まれている。 As shown in FIG. 10 , in power converter 100 according to the second modification of Embodiment 1, lid 4 further includes curved portion 45 . Curved portion 45 protrudes from top plate portion 40 along direction DR1 in which substrate 1 (see FIG. 1) and top plate portion 40 are overlapped. The curved portion 45 is connected to the first rib portion 41 . The curved portion 45 is curved with respect to the first rib portion 41 . The curved portion 45 has a curved shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1). In addition, in FIG. 10, the curved portion 45 is surrounded by a dashed line.
　次に、図１１を用いて、実施の形態１の第３の変形例に係る電力変換装置１００の構成を説明する。 Next, the configuration of the power conversion device 100 according to the third modification of the first embodiment will be described using FIG.
　図１１に示されるように、実施の形態１の第３の変形例に係る電力変換装置１００では、蓋４は、折れ線部４６をさらに含んでいる。折れ線部４６は、基板１（図１参照）と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。折れ線部４６は、第１リブ部４１に対して折れ曲がって第１リブ部４１に接続されている。折れ線部４６は、直線形状を有している。なお、図１１では、折れ線部４６は、一点鎖線によって囲まれている。 As shown in FIG. 11 , in the power converter 100 according to the third modification of the first embodiment, the lid 4 further includes a polygonal line portion 46 . Folded line portion 46 protrudes from top plate portion 40 along direction DR1 in which substrate 1 (see FIG. 1) and top plate portion 40 are overlapped. The bent line portion 46 is bent with respect to the first rib portion 41 and connected to the first rib portion 41 . The bent line portion 46 has a linear shape. In addition, in FIG. 11, the polygonal line portion 46 is surrounded by a dashed line.
　次に、図１２を用いて、実施の形態１の第４の変形例に係る電力変換装置１００の構成を説明する。 Next, with reference to FIG. 12, the configuration of power converter 100 according to the fourth modification of Embodiment 1 will be described.
　図１２に示されるように、実施の形態１の第４の変形例に係る電力変換装置１００では、第２リブ部４２の形状は、天板部４０から基板１（図１参照）に向かう方向から見て矩形である。図１２では、第２リブ部４２の形状は、天板部４０から基板１（図１参照）に向かう方向から見て長方形だが、第２リブ部４２の形状は正方形や多角形であってもよい。 As shown in FIG. 12, in power conversion device 100 according to the fourth modification of Embodiment 1, the shape of second rib portion 42 is the direction from top plate portion 40 toward substrate 1 (see FIG. 1). It is rectangular when viewed from 12, the shape of the second rib portion 42 is rectangular when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1), but the shape of the second rib portion 42 may be square or polygonal. good.
　また、第２リブ部４２の中心は、天板部４０の中心と同一であってもよい。
　また、複数の第１リブ部４１はすべて天板部４０の同一平面上に配置されていてもよい。 Also, the center of the second rib portion 42 may be the same as the center of the top plate portion 40 .
Further, all of the plurality of first rib portions 41 may be arranged on the same plane of the top plate portion 40 .
　また、複数の第１リブ部４１は天板部４０の端辺に到達しないように配置されていてもよい。つまり、複数の第１リブ部４１は天板部４０の端辺と離間して配置されていてもよい。 Also, the plurality of first rib portions 41 may be arranged so as not to reach the edge of the top plate portion 40 . That is, the plurality of first rib portions 41 may be spaced apart from the edge of the top plate portion 40 .
　続いて、本実施の形態の作用効果を説明する。
　実施の形態１に係る電力変換装置１００によれば、図１に示されるように、第２リブ部４２は、環形状を有している。このため、第１リブ部４１および第２リブ部４２の両方を通る断面において、第２リブ部４２が設けられていない場合よりも、蓋４の断面係数が大きい。よって、蓋４の剛性が十分に高い。したがって、蓋４の変形を抑制することができる。 Next, the effects of this embodiment will be described.
According to power converter 100 according to Embodiment 1, as shown in FIG. 1, second rib portion 42 has an annular shape. Therefore, in a cross section passing through both the first rib portion 41 and the second rib portion 42, the section modulus of the lid 4 is larger than when the second rib portion 42 is not provided. Therefore, the rigidity of the lid 4 is sufficiently high. Therefore, deformation of the lid 4 can be suppressed.
　蓋４の剛性が十分に高いため、蓋４の材料として軽量な材料を用いることができる。例えば、蓋４の材料としてアルミニウム（Ａｌ）およびアルミニウム（Ａｌ）合金を用いることができる。このため、蓋４の剛性の向上および軽量化の両立を達成することができる。剛性の向上および軽量化の両立が達成された蓋４は、特に、車載向け電力変換装置１００等の軽量化が求められる用途において有効である。 Since the rigidity of the lid 4 is sufficiently high, a lightweight material can be used as the material for the lid 4. For example, aluminum (Al) and an aluminum (Al) alloy can be used as the material of the lid 4 . Therefore, it is possible to achieve both improvement in rigidity and reduction in weight of the lid 4 . The lid 4 that achieves both improved rigidity and reduced weight is particularly effective in applications requiring weight reduction, such as the on-vehicle power conversion device 100 .
　図１に示されるように、複数の第１リブ部４１および第２リブ部４２の各々は、基板１に向かって天板部４０から突出している。このため、蓋４が筐体３の外部に向かって突出することを抑制することができる。よって、電力変換装置１００の組み付け先である外部機器に複数の第１リブ部４１および第２リブ部４２が干渉することを抑制することができる。したがって、外部機器を蓋４上に安定して配置することができる。 As shown in FIG. 1 , each of the plurality of first rib portions 41 and second rib portions 42 protrudes from the top plate portion 40 toward the substrate 1 . Therefore, it is possible to prevent the lid 4 from protruding toward the outside of the housing 3 . Therefore, it is possible to prevent the plurality of first rib portions 41 and the second rib portions 42 from interfering with the external device to which the power conversion device 100 is attached. Therefore, external devices can be stably arranged on the lid 4 .
　図１に示されるように、複数の第１リブ部４１および第２リブ部４２の各々は、基板１に向かって天板部４０から突出している。このため、蓋４が筐体３の外部に向かって突出することを抑制することができる。よって、電力変換装置１００の高さ方向の寸法を小さくすることができる。 As shown in FIG. 1 , each of the plurality of first rib portions 41 and second rib portions 42 protrudes from the top plate portion 40 toward the substrate 1 . Therefore, it is possible to prevent the lid 4 from protruding toward the outside of the housing 3 . Therefore, the height dimension of the power conversion device 100 can be reduced.
　図３に示されるように、複数の固定部５の各々は、複数の第１リブ部４１の延長線からずれて配置されている。複数の第１リブ部４１の延長線からずれた位置における蓋４の剛性は、複数の第１リブ部４１の延長線における蓋４の剛性よりも低い。このため、複数の第１リブ部４１の延長線からずれた位置において蓋４を筐体３に複数の固定部５によって固定することで、蓋４の剛性を効果的に向上させることができる。 As shown in FIG. 3 , each of the plurality of fixing portions 5 is arranged deviated from the extension line of the plurality of first rib portions 41 . The rigidity of the lid 4 at a position shifted from the extension line of the plurality of first rib portions 41 is lower than the rigidity of the lid 4 at the extension line of the plurality of first rib portions 41 . Therefore, the rigidity of the lid 4 can be effectively improved by fixing the lid 4 to the housing 3 with the plurality of fixing portions 5 at positions deviated from the extension lines of the plurality of first rib portions 41 .
　図５および図６に示されるように、天板部４０の第１部４０１は、第２部４０２よりも基板１（図１参照）とは反対に向かって突出している。このため、第１部４０１の高さ位置は、第２部４０２の高さ位置とは異なっている。よって、第１部４０１の高さ位置と第２部４０２の高さ位置とが同じである場合よりも、天板部４０の断面係数が大きい。したがって、天板部４０の剛性が十分に高い。 As shown in FIGS. 5 and 6, the first portion 401 of the top plate portion 40 protrudes from the second portion 402 in the direction opposite to the substrate 1 (see FIG. 1). Therefore, the height position of the first portion 401 is different from the height position of the second portion 402 . Therefore, the section modulus of the top plate portion 40 is larger than when the height position of the first portion 401 and the height position of the second portion 402 are the same. Therefore, the rigidity of the top plate portion 40 is sufficiently high.
　図５および図６に示されるように、天板部４０の第１部４０１は、第２部４０２よりも基板１（図１参照）とは反対側に向かって突出している。このため、第１部４０１は、筐体３の外側に向かって突出している。よって、第１部４０１の高さ位置と第２部４０２の高さ位置とが同じである場合よりも、筐体３の内側の空間の体積が大きい。したがって、筐体３内に配置される電子部品２の配置の自由度が向上する。 As shown in FIGS. 5 and 6, the first portion 401 of the top plate portion 40 protrudes from the second portion 402 toward the side opposite to the substrate 1 (see FIG. 1). Therefore, the first portion 401 protrudes outward from the housing 3 . Therefore, the volume of the space inside the housing 3 is larger than when the height position of the first portion 401 and the height position of the second portion 402 are the same. Therefore, the degree of freedom in arranging the electronic components 2 in the housing 3 is improved.
　図１に示されるように、電子部品２は、複数の第１リブ部４１および第２リブ部４２から間隔を空けて配置されている。このため、電子部品２は、複数の第１リブ部４１および第２リブ部４２に接触しない。よって、電子部品２と複数の第１リブ部４１および第２リブ部４２との絶縁距離を確保することができる。したがって、電子部品２と複数の第１リブ部４１および第２リブ部４２とを電気的に絶縁することができる。 As shown in FIG. 1, the electronic component 2 is spaced apart from the multiple first rib portions 41 and the second rib portions 42 . Therefore, the electronic component 2 does not come into contact with the multiple first rib portions 41 and the second rib portions 42 . Therefore, the insulation distance between the electronic component 2 and the plurality of first rib portions 41 and second rib portions 42 can be ensured. Therefore, it is possible to electrically insulate the electronic component 2 from the plurality of first rib portions 41 and the second rib portions 42 .
　図１に示されるように、複数の第１リブ部４１は、放射状に配置されている。このため、複数の第１リブ部４１が直線状に配置されている場合よりも、蓋４の断面係数が大きい。よって、蓋４の剛性が十分に高い。 As shown in FIG. 1, the plurality of first rib portions 41 are radially arranged. Therefore, the section modulus of the lid 4 is larger than when the plurality of first rib portions 41 are linearly arranged. Therefore, the rigidity of the lid 4 is sufficiently high.
　図１に示されるように、第２リブ部４２の形状は、円形である。第２リブ部４２内の長さが同じである場合、円形状の第２リブ部４２内の面積は、矩形状の第２リブ部４２内の面積よりも小さい。このため、第２リブ部４２内の領域を小さく維持したまま、第２リブ部４２の長さを長くすることができる。また、複数の第１リブ部４１を配置可能な領域が大きくなる。よって、複数の第１リブ部４１および第２リブ部４２を長くすることができる。これにより、蓋４の断面係数が大きい。したがって、蓋４の剛性が十分に高い。 As shown in FIG. 1, the shape of the second rib portion 42 is circular. When the length of the second rib portion 42 is the same, the area of the circular second rib portion 42 is smaller than the area of the rectangular second rib portion 42 . Therefore, the length of the second rib portion 42 can be increased while the area inside the second rib portion 42 is kept small. Moreover, the area in which the plurality of first rib portions 41 can be arranged is increased. Therefore, the plurality of first rib portions 41 and second rib portions 42 can be lengthened. Thereby, the section modulus of the lid 4 is large. Therefore, the rigidity of the lid 4 is sufficiently high.
　図２に示されるように、第２リブ部４２が円形である場合、蓋４にねじりが加わったときに第２リブ部４２にかかる応力は、一部の箇所に集中することが抑制されるため分散される。このため、蓋４の剛性が高くなる効果が得られる。また第２リブ部４２が円形である場合、第２リブ部４２から放射状に伸びる第１リブ部４１同士は等角度となるように配置することができる。このため、隣り合う第１リブ部４１間に応力が集中することを抑制する効果が得られる。また、第２リブ部４２の成形が容易である。 As shown in FIG. 2, when the second rib portion 42 is circular, the stress applied to the second rib portion 42 when twisting is applied to the lid 4 is suppressed from concentrating at some locations. distributed because Therefore, the effect of increasing the rigidity of the lid 4 is obtained. Further, when the second rib portion 42 is circular, the first rib portions 41 radially extending from the second rib portion 42 can be arranged at equal angles. Therefore, the effect of suppressing the concentration of stress between adjacent first rib portions 41 can be obtained. Further, molding of the second rib portion 42 is easy.
　図２に示されるように、天板部４０に通気孔などの穴が設けられないことで、蓋４に力が加わった場合に応力集中を抑制する効果が得られる。また、塵および水分の浸入を防ぐための部品を設ける必要がないため、蓋４の耐震性の低下を防ぐことができる。 As shown in FIG. 2, the top plate portion 40 is not provided with holes such as ventilation holes, so that the effect of suppressing stress concentration when force is applied to the lid 4 can be obtained. In addition, since there is no need to provide a component for preventing dust and moisture from entering, the lid 4 can be prevented from being degraded in earthquake resistance.
　図３に示されるように、第２リブ部４２の中心は、天板部４０の中心と同一である。具体的には、第２リブ部４２の中心は天板部４０の第１部４０１の中心と同一となるように配置されている。このとき、蓋４の断面係数を大きくすることができるため、剛性を大きくする効果を得ることができる。また、この場合、第１リブ部４１の各リブの長さが最も長くなるため、板金加工が容易である。また、金型を用いて加工するときも成形時のそりを抑制することができる。したがって、加工が容易となる効果を得ることができる。 As shown in FIG. 3 , the center of the second rib portion 42 is the same as the center of the top plate portion 40 . Specifically, the center of the second rib portion 42 is arranged to coincide with the center of the first portion 401 of the top plate portion 40 . At this time, since the section modulus of the lid 4 can be increased, the effect of increasing the rigidity can be obtained. Further, in this case, since the length of each rib of the first rib portion 41 is the longest, sheet metal working is easy. In addition, warpage during molding can be suppressed even when working using a mold. Therefore, an effect of facilitating processing can be obtained.
　図３に示されるように、複数の第１リブ部４１はすべて天板部４０の同一平面上に配置されている。具体的には、複数の第１リブ部４１はすべて天板部４０の第１部４０１上に配置されている。 As shown in FIG. 3 , the plurality of first rib portions 41 are all arranged on the same plane of the top plate portion 40 . Specifically, all of the plurality of first rib portions 41 are arranged on the first portion 401 of the top plate portion 40 .
　複数の第１リブ部４１は天板部４０の端辺と離間して配置されている。具体的には、複数の第１リブ部４１はすべて第１部４０１の端辺に到達しないように配置されている。このため、板金での成形が容易となる効果を得ることができる。また、第１リブ部４１が第１部４０１上に配置されると、第２部４０２と第１部４０１との間の高さを大きくすることで、背の高い電子部品２を基板１に配置することが可能となる。これにより、電子部品２の配置の自由度が向上する効果を得ることができる。 The plurality of first rib portions 41 are arranged apart from the edge of the top plate portion 40 . Specifically, all of the plurality of first rib portions 41 are arranged so as not to reach the edge side of the first portion 401 . Therefore, it is possible to obtain the effect of facilitating molding with sheet metal. Moreover, when the first rib portion 41 is arranged on the first portion 401 , the height between the second portion 402 and the first portion 401 is increased, so that the tall electronic component 2 is mounted on the substrate 1 . can be placed. As a result, it is possible to obtain the effect of improving the degree of freedom in arranging the electronic component 2 .
　実施の形態１の第１の変形例に係る電力変換装置１００によれば、図８に示されるように、複数の第１リブ部４１および第２リブ部４２の各々は、基板１（図１参照）とは反対側に向かって天板部４０から突出している。このため、複数の第１リブ部４１および第２リブ部４２と基板１（図１参照）との間隔を大きくすることができる。よって、電子部品２（図１参照）の配置および高さが複数の第１リブ部４１および第２リブ部４２によって制限されることを抑制することができる。したがって、電子部品２（図１参照）の配置の自由度が向上する。 According to the power conversion device 100 according to the first modification of the first embodiment, as shown in FIG. 8, each of the plurality of first rib portions 41 and the second rib portions 42 is formed on the substrate 1 (FIG. 1 ) protrudes from the top plate portion 40 toward the opposite side. Therefore, it is possible to increase the distance between the plurality of first rib portions 41 and second rib portions 42 and the substrate 1 (see FIG. 1). Therefore, it is possible to prevent the arrangement and height of electronic component 2 (see FIG. 1) from being restricted by the plurality of first rib portions 41 and second rib portions 42 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
　実施の形態１の第２の変形例に係る電力変換装置１００によれば、図１０に示されるように、蓋４は、湾曲部４５をさらに含んでいる。湾曲部４５は、第１リブ部４１に対して湾曲している。このため、湾曲部４５と隣り合う第１リブ部４１と湾曲部４５との間隔は、第１リブ部４１同士が隣り合っている場合の間隔よりも大きい。よって、蓋４が複数の第１リブ部４１および第２リブ部４２のみを含んでいる場合よりも、筐体３内の背の高い電子部品２（図１参照）の配置の自由度が向上する。また、蓋４が複数の第１リブ部４１および第２リブ部４２のみを含んでいる場合よりも、天板部４０から突出した部分（リブ）の長さが湾曲部４５によって長くなるため、蓋４の剛性がさらに高くなる。 According to power converter 100 according to the second modification of Embodiment 1, lid 4 further includes curved portion 45 as shown in FIG. The curved portion 45 is curved with respect to the first rib portion 41 . Therefore, the interval between the first rib portions 41 adjacent to the curved portion 45 and the curved portion 45 is larger than the interval when the first rib portions 41 are adjacent to each other. Therefore, compared with the case where the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, the degree of freedom in arranging the tall electronic components 2 (see FIG. 1) in the housing 3 is improved. do. In addition, since the length of the portion (rib) protruding from the top plate portion 40 is longer due to the curved portion 45 than when the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, The rigidity of the lid 4 is further increased.
　実施の形態１の第３の変形例に係る電力変換装置１００によれば、図１１に示されるように、蓋４は、折れ線部４６をさらに含んでいる。折れ線部４６は、第１リブ部４１に接続されている。折れ線部４６と折れ線部４６が接続された第１リブ部４１に隣接する第１リブ部４１との間隔を小さくできるため、蓋４の剛性が向上する。また、蓋４が複数の第１リブ部４１および第２リブ部４２のみを含んでいる場合よりも、天板部４０から突出した部分（リブ）の長さが折れ線部４６によって長くなるため、蓋４の剛性がさらに高くなる。 According to the power conversion device 100 according to the third modification of the first embodiment, the lid 4 further includes a fold line portion 46, as shown in FIG. The bent line portion 46 is connected to the first rib portion 41 . Since the interval between the fold line portion 46 and the first rib portion 41 adjacent to the first rib portion 41 to which the fold line portion 46 is connected can be reduced, the rigidity of the lid 4 is improved. In addition, since the length of the portion (rib) protruding from the top plate portion 40 is longer due to the fold line portion 46 than when the lid 4 includes only the plurality of first rib portions 41 and the second rib portions 42, The rigidity of the lid 4 is further increased.
　実施の形態１の第４の変形例によれば、図１２に示されるように、第２リブ部４２の形状は、天板部４０から基板１（図１参照）に向かう方向から見て矩形である。第２リブ部４２の形状が矩形である場合、第２リブ部４２の形状が当該矩形の長手寸法または短手寸法と同じ径を有し当該矩形に内接するする円形または楕円である場合よりも、第２リブ部４２に囲まれた領域の面積が大きい。このため、第２リブ部４２に囲まれた領域の下方に背の高い電子部品２（図１参照）を配置しやすい。すなわち、電子部品２（図１参照）の配置自由度が向上する。 According to the fourth modification of the first embodiment, as shown in FIG. 12, the shape of the second rib portion 42 is rectangular when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1). is. When the shape of the second rib portion 42 is a rectangle, the second rib portion 42 is a circle or an ellipse having the same diameter as the long dimension or width dimension of the rectangle and inscribed in the rectangle. , the area surrounded by the second rib portion 42 is large. Therefore, it is easy to arrange a tall electronic component 2 (see FIG. 1) below the area surrounded by the second rib portions 42 . That is, the degree of freedom of arrangement of the electronic component 2 (see FIG. 1) is improved.
　実施の形態２．
　次に、図１３を用いて、実施の形態２に係る電力変換装置１００の構成を説明する。実施の形態２は、特に説明しない限り、上記の実施の形態１と同一の構成および作用効果を有している。したがって、上記の実施の形態１と同一の構成には同一の符号を付し、説明を繰り返さない。 Embodiment 2.
Next, the configuration of the power conversion device 100 according to Embodiment 2 will be described with reference to FIG. 13 . The second embodiment has the same configuration and effects as those of the first embodiment unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
　図１３に示されるように、本実施の形態に係る電力変換装置１００の複数の第１リブ部４１のうち隣り合う第１リブ部４１同士は、第２リブ部４２の中心に対して等角度で配置されている。このため、複数の第１リブ部４１のうち隣り合う第１リブ部４１同士がなす角の角度θは、他の隣り合う第１リブ部４１同士がなす角θの角度と等しい。複数の第１リブ部４１は、第２リブ部４２の中心に対して点対称に配置されている。 As shown in FIG. 13 , adjacent first rib portions 41 among the plurality of first rib portions 41 of power converter 100 according to the present embodiment are equiangular with respect to the center of second rib portion 42 . are placed in Therefore, the angle θ formed by adjacent first rib portions 41 among the plurality of first rib portions 41 is equal to the angle θ formed by other adjacent first rib portions 41 . The plurality of first rib portions 41 are arranged point-symmetrically with respect to the center of the second rib portion 42 .
　続いて、本実施の形態の作用効果を説明する。
　実施の形態２に係る電力変換装置１００によれば、図１４に示されるように、複数の第１リブ部４１のうち隣り合う第１リブ部４１同士は、第２リブ部４２の中心に対して等角度で配置されている。このため、天板部４０（蓋４のうち第１リブ部４１が設けられていない領域）の形状は、第２リブ部４２の中心に対して点対称である。よって、蓋４の形状が非対称である場合よりも、蓋４に応力が集中することが抑制される。したがって、蓋４の剛性が十分に高い。 Next, the effects of this embodiment will be described.
According to the power converter 100 according to Embodiment 2, as shown in FIG. are arranged at equal angles. Therefore, the shape of the top plate portion 40 (the area of the lid 4 where the first rib portion 41 is not provided) is point-symmetrical with respect to the center of the second rib portion 42 . Therefore, concentration of stress on the lid 4 is suppressed more than when the shape of the lid 4 is asymmetrical. Therefore, the rigidity of the lid 4 is sufficiently high.
　実施の形態３．
　次に、図１４を用いて、実施の形態３に係る電力変換装置１００の構成を説明する。実施の形態３は、特に説明しない限り、上記の実施の形態１と同一の構成および作用効果を有している。したがって、上記の実施の形態１と同一の構成には同一の符号を付し、説明を繰り返さない。 Embodiment 3.
Next, the configuration of the power conversion device 100 according to Embodiment 3 will be described with reference to FIG. 14 . Embodiment 3 has the same configuration and effects as those of Embodiment 1 described above unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
　図１４に示されるように、本実施の形態において、電力変換装置１００の複数の第１リブ部４１のうち隣り合う第１リブ部４１同士がなす角の角度θ１は、他の隣り合う第１リブ部４１同士がなす角の角度θ２、θ３と異なっている。すなわち、天板部４０の形状は、非対称である。 As shown in FIG. 14 , in the present embodiment, an angle θ1 formed by adjacent first rib portions 41 among the plurality of first rib portions 41 of power conversion device 100 is equal to the angle θ1 between other adjacent first rib portions 41 . The angles θ2 and θ3 formed by the rib portions 41 are different from each other. That is, the shape of the top plate portion 40 is asymmetrical.
　続いて、本実施の形態の作用効果を説明する。
　実施の形態３に係る電力変換装置１００によれば、図１４に示されるように、複数の第１リブ部４１のうち隣り合う第１リブ部４１同士がなす角の角度θ１は、他の隣り合う第１リブ部４１同士がなす角の角度θ２と異なっている。このため、筐体３内に配置された電子部品２（図１参照）の位置に応じて、第１リブ部４１を配置することができる。よって、電子部品２（図１参照）の配置の自由度が向上する。 Next, the effects of this embodiment will be described.
According to the power conversion device 100 according to the third embodiment, as shown in FIG. 14, the angle θ1 formed by adjacent first rib portions 41 among the plurality of first rib portions 41 is It is different from the angle θ2 formed by the matching first rib portions 41 . Therefore, the first rib portion 41 can be arranged according to the position of the electronic component 2 (see FIG. 1) arranged inside the housing 3 . Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
　実施の形態４．
　次に、図１５を用いて、実施の形態４に係る電力変換装置１００の構成を説明する。実施の形態４は、特に説明しない限り、上記の実施の形態１と同一の構成および作用効果を有している。したがって、上記の実施の形態１と同一の構成には同一の符号を付し、説明を繰り返さない。 Embodiment 4.
Next, the configuration of the power conversion device 100 according to Embodiment 4 will be described with reference to FIG. 15 . The fourth embodiment has the same configuration and effects as those of the first embodiment unless otherwise specified. Therefore, the same reference numerals are given to the same configurations as in the above-described first embodiment, and description thereof will not be repeated.
　図１５に示されるように、本実施の形態に係る電力変換装置１００の蓋４は、第３リブ部４３をさらに含んでいる。第３リブ部４３は、基板１（図１参照）と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。第３リブ部４３は、基板１（図１参照）とは反対側に向かって天板部４０から突出している。電子部品２（図１参照）は、第３リブ部４３から間隔を空けて配置されている。 As shown in FIG. 15, the lid 4 of the power converter 100 according to the present embodiment further includes a third rib portion 43. As shown in FIG. The third rib portion 43 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 (see FIG. 1) and the top plate portion 40 are overlapped. The third rib portion 43 protrudes from the top plate portion 40 toward the side opposite to the substrate 1 (see FIG. 1). The electronic component 2 (see FIG. 1) is spaced apart from the third rib portion 43 .
　第３リブ部４３は、環形状を有している。第３リブ部４３は、天板部４０から基板１（図１参照）に向かう方向から見て環形状を有している。第３リブ部４３の形状は、例えば、円形および矩形である。図１５では、第３リブ部４３の形状は、矩形である。第３リブ部４３には、複数の第１リブ部４１が接続されていてもよい。第３リブ部４３は、第２リブ部４２の外側に配置されている。複数の第１リブ部４１、第２リブ部４２および第３リブ部４３は、互いに接続されている。第３リブ部４３の内部には、第１リブ部４１が配置されていない。 The third rib portion 43 has an annular shape. The third rib portion 43 has an annular shape when viewed from the top plate portion 40 toward the substrate 1 (see FIG. 1). The shape of the third rib portion 43 is, for example, circular and rectangular. In FIG. 15, the shape of the third rib portion 43 is rectangular. A plurality of first rib portions 41 may be connected to the third rib portion 43 . The third rib portion 43 is arranged outside the second rib portion 42 . The plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are connected to each other. The first rib portion 41 is not arranged inside the third rib portion 43 .
　続いて、本実施の形態の作用効果を説明する。
　実施の形態４に係る電力変換装置１００によれば、図１５に示されるように、蓋４は、第３リブ部４３をさらに含んでいる。第３リブ部４３は、第２リブ部４２の外側に配置されている。第３リブ部４３は、基板１（図１参照）と天板部４０とが重ねられた方向ＤＲ１に沿って天板部４０から突出している。第３リブ部４３の内部には、第１リブ部４１が配置されていない。このため、第３リブ部４３の内側の下方に背の高い電子部品２（図１参照）を配置することができる。仮に第３リブ部４３が設けられていない場合および仮に第３リブ部４３が第２リブ部４２の内側に配置されている場合、背の高い電子部品２（図１参照）の配置される領域は、隣り合う第１リブ部４１同士の間の下方または第２リブ部４２の内側の下方に限られる。これに対して、本実施の形態では第３リブ部４３が第２リブ部４２の外側に配置されているため、背の高い電子部品２（図１参照）を第３リブ部４３の内側の下方にも配置することができる。よって、電子部品２（図１参照）の配置の自由度が向上する。 Next, the effects of this embodiment will be described.
According to power converter 100 according to Embodiment 4, lid 4 further includes third rib portion 43 as shown in FIG. 15 . The third rib portion 43 is arranged outside the second rib portion 42 . The third rib portion 43 protrudes from the top plate portion 40 along the direction DR1 in which the substrate 1 (see FIG. 1) and the top plate portion 40 are overlapped. The first rib portion 41 is not arranged inside the third rib portion 43 . Therefore, a tall electronic component 2 (see FIG. 1) can be arranged below the inner side of the third rib portion 43 . If the third rib portion 43 is not provided and if the third rib portion 43 is arranged inside the second rib portion 42, the area where the tall electronic component 2 (see FIG. 1) is arranged is limited to the lower side between the adjacent first rib portions 41 or the lower inner side of the second rib portion 42 . On the other hand, in the present embodiment, the third rib portion 43 is arranged outside the second rib portion 42, so that the tall electronic component 2 (see FIG. 1) is placed inside the third rib portion 43. It can also be placed below. Therefore, the degree of freedom in arranging the electronic component 2 (see FIG. 1) is improved.
　図１５に示されるように、複数の第１リブ部４１、第２リブ部４２および第３リブ部４３は、互いに接続されている。このため、複数の第１リブ部４１、第２リブ部４２および第３リブ部４３が設けられていない蓋４の面積を低減することができる。よって、蓋４の断面係数を複数の第１リブ部４１、第２リブ部４２および第３リブ部４３によって大きくすることができる。したがって、蓋４の剛性が第１リブ部４１、第２リブ部４２および第３リブ部４３によって向上する。 As shown in FIG. 15, the plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are connected to each other. Therefore, it is possible to reduce the area of the lid 4 where the plurality of first rib portions 41, second rib portions 42 and third rib portions 43 are not provided. Therefore, the section modulus of the lid 4 can be increased by the plurality of first rib portions 41 , second rib portions 42 and third rib portions 43 . Therefore, the rigidity of the lid 4 is improved by the first rib portion 41 , the second rib portion 42 and the third rib portion 43 .
　今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 The embodiments disclosed this time should be considered illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the scope of claims rather than the above description, and is intended to include all changes within the meaning and scope of equivalence to the scope of claims.
　１　基板、３　筐体、４　蓋、５　固定部、３１　底部、４０　天板部、４１　第１リブ部、４２　第２リブ部、４３　第３リブ部、１００　電力変換装置、４０１　第１部、４０２　第２部。 1 substrate, 3 housing, 4 lid, 5 fixing part, 31 bottom part, 40 top plate part, 41 first rib part, 42 second rib part, 43 third rib part, 100 power converter, 401 first part, 402 Part 2.

Claims (13)

  1. 　基板と、
    　前記基板が配置された底部を含む筐体と、
    　前記基板に対して前記筐体の前記底部とは反対側に配置された蓋とを備え、
    　前記蓋は、前記基板を覆う天板部と、前記基板と前記天板部とが重ねられた方向に沿って前記天板部から突出した複数の第１リブ部と、前記基板と前記天板部とが重ねられた方向に沿って前記天板部から突出した第２リブ部とを含み、
    　前記複数の第１リブ部は、直線状でありかつ前記第２リブ部を挟んで向かい合うように前記第２リブ部に接続されており、
    　前記第２リブ部は、環形状を有している、電力変換装置。     a substrate;
    a housing including a bottom on which the substrate is disposed;
    a lid disposed on the opposite side of the bottom of the housing with respect to the substrate;
    The lid includes a top plate portion covering the substrate, a plurality of first rib portions protruding from the top plate portion along a direction in which the substrate and the top plate portion are overlapped, and the substrate and the top plate. and a second rib portion protruding from the top plate portion along the direction in which the portions are overlapped,
    The plurality of first rib portions are linear and connected to the second rib portion so as to face each other across the second rib portion,
    The power conversion device, wherein the second rib portion has an annular shape.
  2. 　前記複数の第１リブ部および前記第２リブ部の各々は、前記基板に向かって前記天板部から突出している、請求項１に記載の電力変換装置。 The power conversion device according to claim 1, wherein each of said plurality of first rib portions and said second rib portions protrudes from said top plate portion toward said substrate.
  3. 　前記複数の第１リブ部および前記第２リブ部の各々は、前記基板とは反対側に向かって前記天板部から突出している、請求項１に記載の電力変換装置。 2. The power converter according to claim 1, wherein each of said plurality of first rib portions and said second rib portions protrudes from said top plate portion toward the side opposite to said substrate.
  4. 　前記複数の第１リブ部のうち隣り合う第１リブ部同士は、前記第２リブ部の中心に対して等角度で配置されている、請求項１～３のいずれか１項に記載の電力変換装置。 The electric power according to any one of claims 1 to 3, wherein adjacent first rib portions among the plurality of first rib portions are arranged at equal angles with respect to the center of the second rib portion. conversion device.
  5. 　前記第２リブ部の中心は、前記天板部の中心と同一である、請求項１～３のいずれか１項に記載の電力変換装置。 The power converter according to any one of claims 1 to 3, wherein the center of the second rib portion is the same as the center of the top plate portion.
  6. 　前記蓋は、前記基板と前記天板部とが重ねられた方向に沿って前記天板部から突出しかつ環形状を有する第３リブ部をさらに含み、
    　前記第３リブ部は、前記第２リブ部の外側に配置されている、請求項１～５のいずれか１項に記載の電力変換装置。     The lid further includes a third rib portion protruding from the top plate portion along the direction in which the substrate and the top plate portion are overlapped and having a ring shape,
    The power converter according to any one of claims 1 to 5, wherein the third rib portion is arranged outside the second rib portion.
  7. 　前記複数の第１リブ部、前記第２リブ部および前記第３リブ部は、互いに接続されている、請求項６に記載の電力変換装置。 The power converter according to claim 6, wherein said plurality of first rib portions, said second rib portions and said third rib portions are connected to each other.
  8. 　前記筐体と前記蓋とを固定する複数の固定部をさらに備え、
    　前記複数の固定部の各々は、前記複数の第１リブ部の延長線からずれて配置されている、請求項１～７のいずれか１項に記載の電力変換装置。     further comprising a plurality of fixing parts for fixing the housing and the lid,
    The power converter according to any one of claims 1 to 7, wherein each of said plurality of fixing portions is arranged deviated from extension lines of said plurality of first rib portions.
  9. 　前記天板部は、前記複数の第１リブ部および前記第２リブ部が設けられた第１部と、前記固定部が固定された第２部とを有し、
    　前記天板部の前記第１部は、前記第２部よりも前記基板とは反対側に向かって突出している、請求項８に記載の電力変換装置。     The top plate portion has a first portion provided with the plurality of first rib portions and the second rib portion, and a second portion to which the fixing portion is fixed,
    The power converter according to claim 8, wherein said first portion of said top plate portion protrudes further toward the side opposite to said substrate than said second portion.
  10. 　前記複数の第１リブ部は前記天板部の端辺と離間して配置されている、請求項１～９のいずれか１項に記載の電力変換装置。 The power converter according to any one of claims 1 to 9, wherein the plurality of first rib portions are arranged apart from the edge of the top plate portion.
  11. 　前記基板に接続された電子部品をさらに備え、
    　前記電子部品は、前記複数の第１リブ部および前記第２リブ部から間隔を空けて配置されている、請求項１～１０のいずれか１項に記載の電力変換装置。     further comprising an electronic component connected to the substrate;
    The power converter according to any one of claims 1 to 10, wherein said electronic component is spaced apart from said plurality of first ribs and said second ribs.
  12. 　前記複数の第１リブ部は、放射状に配置されている、請求項１～１１のいずれか１項に記載の電力変換装置。 The power converter according to any one of claims 1 to 11, wherein the plurality of first rib portions are radially arranged.
  13. 　前記複数の第１リブ部は、前記第２リブ部の中心に対して点対称に配置されている、請求項１～３のいずれか１項に記載の電力変換装置。 The power converter according to any one of claims 1 to 3, wherein the plurality of first rib portions are arranged point-symmetrically with respect to the center of the second rib portion.
PCT/JP2022/006136 2021-02-19 2022-02-16 Power conversion device WO2022176900A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0933844A (en) * 1995-07-17 1997-02-07 Fuji Xerox Co Ltd Optical scanner
JP2007315269A (en) * 2006-05-25 2007-12-06 Mitsubishi Heavy Ind Ltd Electric compressor integrated with inverter
WO2016006361A1 (en) * 2014-07-10 2016-01-14 日産自動車株式会社 Electronic-component-accommodating structure
JP2017515041A (en) * 2015-04-17 2017-06-08 ハノン システムズ Electric compressor
JP2020115699A (en) * 2019-01-17 2020-07-30 株式会社豊田自動織機 Power conversion device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0933844A (en) * 1995-07-17 1997-02-07 Fuji Xerox Co Ltd Optical scanner
JP2007315269A (en) * 2006-05-25 2007-12-06 Mitsubishi Heavy Ind Ltd Electric compressor integrated with inverter
WO2016006361A1 (en) * 2014-07-10 2016-01-14 日産自動車株式会社 Electronic-component-accommodating structure
JP2017515041A (en) * 2015-04-17 2017-06-08 ハノン システムズ Electric compressor
JP2020115699A (en) * 2019-01-17 2020-07-30 株式会社豊田自動織機 Power conversion device

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