Power converter

Abstract

To provide a power conversion device that can improve the space efficiency of the mounting target. [Solution] The power converter 1 is mounted on the mounting target by a mounting device S. The power converter 1 comprises a substrate 2 on which a plurality of electrical components A are mounted, a substrate support member 3 that supports the substrate 2, a pressing member 4 having a fastening portion 4d fixed to the substrate support member 3 and a pressing portion 4a that presses at least one of the components used in the power converter 1 or the plurality of electrical components A toward the substrate 2, and a plurality of gripped portions 5 that engage with the gripping arm Sa of the mounting device S, at least one of the plurality of gripped portions 5 being an overhang 6 provided on the pressing member 4, the substrate support member 3 having a fixing portion 3a that fixes the pressing portion 4a, and the overhang 6 being located on the edge portion 3d side of the substrate support member 3 than the fixing portion 3a.

Description

Technical Field

[0001] The present invention relates to a power conversion device.

Background Art

[0002] Patent Document 1 discloses an insulated power conversion device. The insulated power conversion device includes a substrate, an input terminal provided on the substrate, an output terminal provided on the substrate, a primary winding, and a secondary winding having a number of turns different from that of the primary winding. The insulated power conversion device has a transformer provided on the substrate and a pattern having a first pattern provided between the input terminal and the primary winding and a second pattern provided between the output terminal and the secondary winding.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Power converters may be equipped with a plate-shaped substrate support member for supporting a substrate on which electrical components are mounted. Patent Document 1 discloses a configuration in which the substrate is supported by an aluminum plate. Such a power converter is transported to the mounting location by gripping the substrate support member, but when mounting it inside a case, the gripping arm of the mounting device is hooked onto the gripped portion of the substrate support member to grip it. However, because the walls of the case and other components get in the way and prevent the gripping arm from extending from the side, it is necessary to suspend the power converter using the gripping arm. Since the substrate is positioned above the substrate support member, the gripped portion is formed to avoid the substrate and allow the gripping arm extending from above to hook onto it. In this case, if the area occupied by the gripped portion inside the case is large, the space for placing the substrate becomes narrow. It is desirable that the gripped portion, which is only used when mounting the power converter, be set to be as space-saving as possible. Therefore, there is room for improvement in the space efficiency of the case as the mounting target.

[0005] The objective of the present invention is to provide a power conversion device that can improve the space efficiency of the mounting target. [Means for solving the problem]

[0006] (1) A power conversion device according to one aspect of the present invention is a power conversion device mounted on a mounting object by a mounting device, comprising: a substrate on which a plurality of electrical components are mounted; a substrate support member that supports the substrate; a fixed portion fixed to the substrate support member; a pressing member having a pressing portion that presses at least one of the components used in the power conversion device or a plurality of electrical components against the substrate side; and a plurality of gripping portions that engage with a gripping arm of the mounting device, wherein at least one of the plurality of gripping portions is an overhang provided on the pressing member, the substrate support member has a fixing portion that fixes the pressing portion, and the overhang portion is located on the edge side of the substrate support member than the fixing portion.

[0007] In the power conversion device described above, a pressing member is provided which has a pressing portion that presses at least one of a plurality of electrical components against the substrate, and a plurality of gripped portions that engage with the gripping arm of the mounting device. The substrate support member has a fixing portion that fixes the pressing portion of the pressing member. At least one of the plurality of gripped portions is provided on the pressing member so as to protrude outward from the substrate support member and is an overhang portion located on the edge side of the substrate support member than the fixing portion. In this configuration, since at least one of the plurality of gripped portions is an overhang portion provided on the pressing member, the configuration for engaging with the gripping arm can be omitted in the substrate support member. This makes it possible to miniaturize the substrate support member. Therefore, the space efficiency of the mounting target can be improved. In addition, since the overhang portion is located on the edge side of the substrate support member than the fixing portion, it is possible to easily engage the gripping arm of the mounting device with the overhang portion.

[0008] (2) In (1) above, the protruding portion may protrude on the side opposite to the substrate relative to the fixed portion. In such a configuration, the gripping arm of the mounting device can easily engage with the protruding portion while avoiding the electrical components mounted on the substrate.

[0009] (3) In (1) or (2) above, the tip of the protruding portion may be located inside the substrate support member beyond the edge of the substrate support member. In such a configuration, the space between the protruding portion and the substrate support member can be effectively utilized.

[0010] (4) In any of (1) to (3) above, there are at least three gripping parts, and the center of gravity of the power converter may be inside the imaginary line connecting at least three gripping parts. In such a configuration, the power converter can be stably suspended by the gripping arm of the mounted device.

[0011] (5) In any of (1) to (4) above, the component is the core of a transformer or reactor, and the pressing part may press the core against the substrate. In such a configuration, for example, power can be efficiently converted by a transformer or power can be stabilized by a reactor. [Effects of the Invention]

[0012] According to the present invention, the space efficiency of the mounting target can be improved. [Brief explanation of the drawing]

[0013] [Figure 1] This is a plan view showing a power conversion device according to an embodiment of the present invention. [Figure 2] This is a cross-sectional view along the line II-II shown in Figure 1. [Figure 3] This is an enlarged perspective view showing the region including the pressing member in a power conversion device. [Figure 4] This is a schematic plan view showing the center of gravity of multiple gripping parts and a power conversion device. [Figure 5] This is a plan view showing a power conversion device related to a comparative example. [Figure 6] This is a cross-sectional view along the line VI-VI shown in Figure 5. [Figure 7] This is an enlarged cross-sectional view showing a power conversion device according to a modified example of the present invention. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described in detail below with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[0015] FIG. 1 is a plan view showing a power conversion device according to an embodiment of the present invention. In FIG. 1, only the outer shape is shown for the substrate 2 (described later). FIG. 2 is a cross-sectional view taken along line II-II shown in FIG. 1. FIG. 2 schematically shows the power conversion device 1 and shows a cross-section along the longitudinal direction and the height direction of the power conversion device 1.

[0016] The power conversion device 1 is mounted on a mounting target by a mounting device S. The mounting target is, for example, a case 11 of a power supply device mounted on a vehicle such as a hybrid vehicle or an electric vehicle. The mounting device S is a device for mounting the power conversion device 1 on the mounting target.

[0017] The power conversion device 1 is, for example, a DC-DC converter. The power conversion device 1 includes a substrate 2, a substrate support member 3, a plurality (in one example, two) of pressing members 4, and a gripped portion 5.

[0018] A plurality of electrical components A (not shown) are mounted on the substrate 2 by soldering. Also, the electrical component A may be a component that is not mounted on the substrate 2 and is fixed and used by a method other than soldering. The electrical component A that is not mounted on the substrate 2 is, for example, a core of a transformer or a reactor shown in FIG. 2. The electrical component A including the core of the transformer or the reactor is a component used in the power conversion device 1.

[0019] Hereinafter, the longitudinal direction of the substrate 2 will be referred to as the first direction D1, the width direction of the substrate 2 will be referred to as the second direction D2, and the direction orthogonal to both the first direction D1 and the second direction D2 will be referred to as the third direction D3 for explanation. However, these directions are for convenience of explanation and do not limit the arrangement position or direction of the object. The second direction D2 is a direction intersecting the first direction D1. The third direction D3 is the thickness direction of the substrate 2.

[0020] The electrical component A, which is the core of the transformer, is arranged, for example, near the edge 2a of the substrate 2. For example, a pair of electrical components A, which are the cores of the transformer, are arranged on the front and back surfaces of the substrate 2. A pair of electrical components A, which are the cores of the transformer, pass their magnetic legs through holes 2b formed in the substrate 2 and are arranged side by side in the third direction D3 so as to sandwich the substrate 2.

[0021] Although not shown in the figure, electronic components such as switching elements, heating elements, windings of transformers or reactors, etc. may be arranged on the substrate 2. Further, as shown in FIG. 3 (described later), windings C (copper plates) of the transformer may be arranged around the holes 2b in the substrate 2 through which the magnetic legs of the electrical component A, which is the core of the transformer, pass. Windings of the transformer may be arranged on the inner layer or the back surface of the substrate 2.

[0022] The substrate support member 3 supports the substrate 2. The material of the substrate support member 3 is, for example, a metal such as aluminum. The substrate support member 3 is, for example, a die-cast plate. The substrate support member 3 may be referred to as a base plate.

[0023] The substrate support member 3 has a base portion 3f and a fixing portion 3a. The base portion 3f is located below the substrate 2 (in the direction of the case 11 side in the third direction D3). The base portion 3f extends along the substrate 2. For example, the thickness of the base portion 3f is greater than the thickness of the substrate 2. A plurality of bosses (not shown) project from the base portion 3f toward the substrate 2 side, and the substrate 2 is fixed to the substrate support member 3 by being screwed to the bosses.

[0024] The fixing portion 3a fixes the fastening portion 4d (described later), which is the fixed portion of the pressing member 当該ボスにねじ止めされることで基板支持部材3に固定される。4. The fixing portion 3a is located near the edge 3d of the substrate support member 3. The fixing portion 3a is located at the first end portion 3b of the substrate support member 3 in the first direction D1. The fixing portion 3a projects from the upper surface of the base portion 3f. The fixing portion 3a is adjacent to the edge 2a of the substrate 2.

[0025] The fixing portion 3a extends from the base portion 3f to the upper part of the substrate 2 (in the direction opposite to the base portion 3f in the third direction D3). When viewed from the third direction D3, the portion of the substrate 2 that overlaps with the fixing portion 3a is cut out. The upper end 3e of the fixing portion 3a is in contact with the pressing member 4.

[0026] The fixing portion 3a is, for example, cylindrical. The fixing portion 3a is, for example, a boss. On the inside of the cylindrical fixing portion 3a, a screw groove is formed for screwing in a screw N (not shown in the figure). The screw N fastens the substrate support member 3 and the pressing member 4 together.

[0027] The power converter 1 may be housed in a case 11. The case 11 is box-shaped. The case 11 has a bottom portion 11a and side wall portions 11c.

[0028] The bottom portion 11a extends along the substrate 2 and the substrate support member 3. The bottom portion 11a extends in a first direction D1 and a second direction D2. For example, the thickness of the bottom portion 11a is greater than the thickness of the base portion 3f of the substrate support member 3. Other substrates and components besides the power converter 1, such as electrical components like reactors, may be provided on the bottom portion 11a of the case 11.

[0029] A recess 11b is formed in the upper part of the bottom 11a of case 11. The recess 11b is recessed in the third direction D3, away from the substrate support member 3. The recess 11b faces the substrate support member 3.

[0030] Multiple protrusions 3h are formed on the lower part of the substrate support member 3 (the part facing the recess 11b). The protrusions 3h are plate-shaped and extend in the second direction D2. The protrusions 3h project from the base portion 3f toward the recess 11b. The multiple protrusions 3h are aligned in the first direction D1. When the substrate support member 3 is housed in the case 11, a groove 11e is formed by the recess 11b of the case 11 and the protrusions 3h of the substrate support member 3.

[0031] The groove 11e functions as a flow path for the refrigerant used to cool the power converter 1. The groove 11e is, for example, a water channel. The shape of the groove 11e is not particularly limited. For example, the groove 11e may extend in a first direction D1 or in a second direction D2. By extending the projection 3h from the base portion 3f of the substrate support member 3 and forming the groove 11e, the contact area between the substrate support member 3 and the refrigerant can be increased, making it easier to transfer heat from the substrate support member 3 to the refrigerant. The projection 3h does not have to be plate-shaped; it may be pin-shaped or the like.

[0032] The side wall portion 11c protrudes upward from the bottom portion 11a. The side wall portion 11c is erected in a third direction D3 from the bottom portion 11a. The side wall portion 11c has a rectangular cylindrical shape. The side wall portion 11c is located at both ends 11d in the first direction D1 and both ends (not shown) in the second direction D2 of the bottom portion 11a. The side wall portion 11c surrounds the power converter 1.

[0033] The mounting device S has multiple gripping arms Sa. The gripping arms Sa of the mounting device S grip and move the power converter 1 in order to mount the power converter 1 onto the case 11. The power converter 1 is suspended by the gripping arms Sa. The gripping arms Sa are movable in, for example, three axial directions.

[0034] The gripping arm Sa is, for example, L-shaped. The tip of the gripping arm Sa is bent toward the center of the power converter 1. This makes it easier for the gripping arm Sa to grip the power converter 1.

[0035] The gripping portion 5 is the part to which the gripping arm Sa is hooked when the power converter 1 is mounted on the case 11. The gripping portion 5 engages with the gripping arm Sa of the mounting device S. The number of gripping arms Sa is, for example, the same as the number of gripping portions 5.

[0036] The power converter 1 has multiple (three in one example) gripping parts 5. Part of the gripping parts 5 is a bent part 7 provided on the substrate support member 3. The substrate support member 3 is provided with multiple (two in one example) bent parts 7.

[0037] Of the two bent portions 7 provided on the substrate support member 3, one bent portion 7 is located on one side (second end portion 3c) in the longitudinal direction (first direction D1) of the substrate 2, and the other bent portion 7 is located on one side in the width direction (second direction D2) of the substrate 2. Figure 2 shows one of the bent portions 7.

[0038] The bent portion 7 is integrated with the substrate support member 3. The bent portion 7 is adjacent to the edge 2a of the substrate 2. The bent portion 7 extends above the substrate 2. When viewed from the third direction D3, the portion of the substrate 2 that overlaps with the bent portion 7 is cut out.

[0039] The bent portion 7 protrudes from the base portion 3f of the substrate support member 3 toward the substrate 2. The bent portion 7 protrudes from the second end portion 3c of the substrate support member 3. The bent portion 7 is bent, for example, in an L-shape.

[0040] The bent portion 7 has a first portion 7a and a second portion 7b. The first portion 7a is the portion of the bent portion 7 that follows the third direction D3. The first portion 7a is adjacent to the base portion 3f of the substrate support member 3. The first portion 7a is erected from the second end portion 3c of the substrate support member 3.

[0041] The second portion 7b is the portion of the bent portion 7 along the first direction D1. The second portion 7b is adjacent to the first portion 7a. The second portion 7b is located outside the substrate support member 3 beyond the second end 3c of the substrate support member 3. This allows the bent portion 7 and the gripping arm Sa to engage with each other.

[0042] Figure 3 is an enlarged perspective view showing the region including the pressing member in a power converter. The pressing member 4 is a member that presses electrical component A against it. Electrical component A, such as the core of a transformer, is a component that needs to be pressed and supported by the pressing member 4.

[0043] The pressing member 4 functions, for example, as a bracket. The pressing member 4 may be elastic. The pressing member 4 may be, for example, a leaf spring. The pressing member 4 may press the electrical component A by elastic force.

[0044] The pressing member 4 is positioned near the edge 2a of the substrate 2. The pressing member 4 is located above the substrate 2. The pressing member 4 is, for example, plate-shaped. The material of the pressing member 4 is, for example, a metal such as stainless steel. The pressing member 4 is fixed to the fixing portion 3a of the substrate support member 3.

[0045] The pressing member 4 has a fastening portion 4d. The fastening portion 4d is located in the center of the pressing member 4. The fastening portion 4d has a first through hole 4b formed therein for fixing the pressing member 4 to the substrate support member 3. The pressing member 4 is fixed to the substrate support member 3 by a screw N through the first through hole 4b. The diameter of the first through hole 4b is large enough for the screw N to pass through.

[0046] Multiple (two in this example) second through holes 4c are formed in the fastening portion 4d, aligned in the longitudinal direction (first direction D1) of the pressing member 4. Multiple (two in this example) guides 3g of the substrate support member 3 pass through the second through holes 4c.

[0047] The guide 3g is formed on the upper end 3e of the fixing portion 3a of the substrate support member 3. The guide 3g protrudes upward from the upper end 3e. The guide 3g is, for example, rod-shaped. The guide 3g positions the pressing member 4 on the fixing portion 3a before tightening the screw N and functions as an anti-rotation mechanism when tightening the screw N.

[0048] The pressing member 4 has a pressing portion 4a adjacent to the fastening portion 4d in the longitudinal direction. The pressing portion 4a presses at least one of the components or multiple electrical components A used in the power converter 1 against the substrate 2. For example, the pressing portion 4a presses the core of a transformer against the substrate 2. The pressing portion 4a is located at one end of the pressing member 4 in the longitudinal direction.

[0049] As shown in Figure 1, the shapes of the multiple pressing members 4 arranged in the first direction D1 may differ from one another. In the pressing member 4 located on the other side of the first direction D1 (opposite the bent portion 7), one pressing portion 4a extends from the fastening portion 4d. The pressing member 4 located on the other side of the first direction D1 is pressing against the core of the transformer.

[0050] In the pressing member 4 located on one side of the first direction D1 (the side of the bent portion 7), there may be multiple (two in this example) pressing portions 4a extending from the fastening portion 4d. In this case, of the multiple pressing portions 4a, one pressing portion 4a and the other pressing portion 4a extend in different directions from each other. The pressing member 4 located on one side of the first direction D1 is pressing against the core of the reactor.

[0051] Refer to Figure 3 again. A portion of the pressing member 4 located on the other side of the first direction D1 is the gripping portion 5 provided by the power conversion device 1 described above. In the following, the gripping portion 5 of the pressing member 4 will be described as the protruding portion 6. That is, at least one of the multiple gripping portions 5 is the protruding portion 6.

[0052] The protruding portion 6 has the same function as the bent portion 7. The protruding portion 6 is provided on the pressing member 4. The protruding portion 6 is located at the end of the pressing member 4 opposite to the pressing portion 4a relative to the fastening portion 4d. The protruding portion 6 extends from the fastening portion 4d of the pressing member 4 to the side opposite to the pressing portion 4a.

[0053] The protruding portion 6 is provided, for example, on one of the multiple pressing members 4. In the planar direction defined by the first direction D1 and the second direction D2, the protruding portion 6 is located on the edge 3d side of the substrate support member 3, rather than on the fixing portion 3a of the substrate support member 3. In other words, when viewed from the third direction D3, the protruding portion 6 is located on the edge 3d side of the substrate support member 3, not on the center side. The tip 6c of the protruding portion 6 is located inside the substrate support member 3, beyond the edge 3d of the substrate support member 3.

[0054] The protruding portion 6 projects outwards from the base plate 2 on the opposite side (upwards) in the third direction D3 relative to the fastening portion 4d (i.e., the fixed portion). The protruding portion 6 is bent in a substantially L-shape upwards from the fastening portion 4d of the pressing member 4 relative to the base plate 2. The protruding portion 6 has a first portion 6a and a second portion 6b.

[0055] The first portion 6a is the portion of the protruding portion 6 along the third direction D3. The first portion 6a is adjacent to the fastening portion 4d of the pressing member 4. The first portion 6a is bent, for example, at approximately a right angle to the fastening portion 4d of the pressing member 4.

[0056] The second portion 6b is the portion of the protruding portion 6 along the first direction D1. The second portion 6b is adjacent to the first portion 6a. The second portion 6b is located on the opposite side of the first portion 6a from the fastening portion 4d of the pressing member 4. The second portion 6b is bent, for example, at approximately a right angle to the first portion 6a. When viewed from the third direction D3, the second portion 6b has, for example, a rectangular shape.

[0057] The second portion 6b is further away from the substrate 2 than the fastening portion 4d of the pressing member 4. This makes it easier to insert the gripping arm Sa into the space between the substrate 2 and the second portion 6b. The second portion 6b is in contact with the gripping arm Sa. The second portion 6b has sufficient strength to be gripped by the gripping arm Sa. In addition, by making it easier for the gripping arm Sa to enter between the substrate 2 and the second portion 6b, the space of the power converter 1 can be used effectively.

[0058] Figure 4 is a schematic plan view showing multiple gripping parts and the center of gravity of the power converter. Figure 4 shows only the outer shapes of the gripping parts 5 and the substrate support member 3. For example, there are at least three gripping parts 5. As an example, the center of gravity m of the power converter 1 is located inside a virtual line K that virtually connects three gripping parts 5. The virtual line K is a line that virtually connects the centers of the three gripping parts 5. The center of gravity m is enclosed by the virtual line K.

[0059] The virtual line K has a polygonal shape (triangular in one example). Because the center of gravity m of the power converter 1 is located inside the virtual line K, the power converter 1 can be stably lifted and suspended by the gripping arm Sa.

[0060] Figure 5 is a plan view showing a power conversion device according to a comparative example. Figure 6 is a cross-sectional view along the line VI-VI shown in Figure 5.

[0061] The power converter 1X in the comparative example differs from the power converter 1 of this embodiment in that the pressing member 4X does not have an overhang 6. The substrate support member 3X of the power converter 1X differs from the power converter 1 in that, instead of an overhang 6, it has a gripping portion 5 similar to the bent portion 7. Consequently, the shape of the substrate 2X is also different from that of the substrate 2.

[0062] The substrate support member 3X has gripping portions 5 at both the second end 3c and the first end 3b. All gripping portions 5 of the power converter 1X are provided on the substrate support member 3X as bent portions 7. The gripping portion 5 (bent portion 7) located at the first end 3b is integrated with the fixing portion 3a and is adjacent to the pressing member 4X. The gripping portion 5 (bent portion 7) adjacent to the pressing member 4X has a projection shape that protrudes upward.

[0063] If the area occupied by the gripping portion 5 within the case 11 is large, the space available for placing the substrate 2X becomes limited. As described above, the gripping arm Sa is movable in three axes, and it is necessary to provide the gripping portion 5 on the substrate support member 3X while also considering the space required between the power converter 1X and the case 11. As a result, the substrate 2X may be eroded by the area occupied by the gripping portion 5. Since the gripping portion 5 is only used when the power converter 1X is mounted, it is desirable to set it to be as space-saving as possible.

[0064] Therefore, the power converter 1 of this embodiment is provided with a pressing member 4 having a pressing portion 4a that presses at least one of a plurality of electrical components A against the substrate 2, and a plurality of gripped portions 5 that engage with the gripping arm Sa of the mounting device S. The substrate support member 3 has a fixing portion 3a that fixes the pressing portion 4a of the pressing member 4. At least one of the plurality of gripped portions 5 is an overhanging portion 6 located on the edge portion 3d side of the substrate support member 3 than the fixing portion 3a. In this configuration, since at least one of the plurality of gripped portions 5 is an overhanging portion 6 provided on the pressing member 4, the configuration for engaging with the gripping arm Sa can be omitted in the substrate support member 3. This makes the substrate support member 3 smaller. Therefore, the space efficiency of the case 11 can be improved. In addition, since the overhanging portion 6 is located on the edge portion 3d side of the substrate support member 3 than the fixing portion 3a, it is possible to easily engage the gripping arm Sa of the mounting device S with the overhanging portion 6.

[0065] Furthermore, in this embodiment, the protruding portion 6 protrudes from the opposite side of the substrate 2 relative to the fastening portion 4d of the pressing member 4. With this configuration, the gripping arm Sa of the mounting device S can easily engage with the protruding portion 6 while avoiding the electrical components A mounted on the substrate 2.

[0066] Furthermore, in this embodiment, the tip 6c of the protruding portion 6 is located inside the substrate support member 3, relative to the edge 3d of the substrate support member 3. With this configuration, the space between the protruding portion 6 and the substrate support member 3 can be effectively utilized. For example, as shown in Figure 3, this space can be used for the screws N1 that extend the substrate 2 and fix it to the substrate support member 3, or for arranging other components.

[0067] Furthermore, in this embodiment, there are at least three gripping parts 5, and the center of gravity m of the power converter 1 lies inside the imaginary line K connecting at least three gripping parts 5. With this configuration, the power converter 1 can be stably suspended by the gripping arm Sa of the mounting device S.

[0068] Furthermore, in this embodiment, electrical component A is the core of a transformer or reactor, and the pressing portion 4a of the pressing member 4 presses the core against the substrate 2. With such a configuration, for example, power can be efficiently converted by a transformer, or power can be stabilized by a reactor.

[0069] Refer to Figure 5 again. In the area occupied by the gripped portion 5, the substrate 2X may be eroded, making it impossible to place components to be mounted on the substrate 2X. Increasing the area of ​​the substrate 2X to accommodate components would increase the overall size.

[0070] In contrast, in the power converter 1 of this embodiment, since the pressing member 4 is provided with an overhang 6, the space previously occupied by the gripped portion 5 on the substrate support member 3X can be used for the substrate 2. This makes it possible to miniaturize the power converter 1.

[0071] Furthermore, since the component corresponding to the gripped portion 5 can be omitted from the substrate support member 3, the amount of material required to form the substrate support member 3 can be reduced. This reduces the manufacturing cost of the substrate support member 3. With the component omitted, the number of items to be inspected is reduced, making quality verification easier.

[0072] Furthermore, the configuration of the substrate support member 3 can be simplified, and the substrate support member 3 can be made lighter. In addition, since the component corresponding to the gripped portion 5 can be omitted from the substrate support member 3, the manufacturing of the substrate support member 3 becomes easier.

[0073] In the manufacturing of the substrate support member 3, the material forming the substrate support member 3 may be cooled. If the thickness of the substrate support member 3 is uneven, the temperature of the substrate support member 3 may become uneven during manufacturing. In this case, the material may not solidify and may burn into the protruding parts such as the gripping parts 5. Thus, in substrate support members 3X ​​having many gripping parts 5, the quality may deteriorate.

[0074] Furthermore, when molding the substrate support member 3X using a mold, the presence of the gripping portion 5 makes the shape more complex, requiring strong pressure to be applied to the mold. Therefore, it is necessary to use equipment capable of applying strong pressure, which can increase the cost of manufacturing the substrate support member 3X.

[0075] In this embodiment, since some of the gripping portion 5 of the substrate support member 3 is omitted, seizing of the substrate support member 3 can be suppressed and quality can be maintained. Furthermore, since it is not necessary to mold the substrate support member 3 under strong pressure, the manufacturing cost of the substrate support member 3 can be reduced.

[0076] Although several embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, in the above embodiment, the protruding portion 6 is provided on one of the multiple pressing members 4, but the present invention is not limited to such a form. For example, the protruding portion 6 may be provided on all of the pressing members 4.

[0077] Furthermore, in the above embodiment, the protruding portion 6 protrudes in the third direction D3 toward the opposite side of the substrate 2 relative to the fastening portion 4d of the pressing member 4, but it is not limited to such a configuration. For example, the protruding portion 6 may protrude toward the substrate 2 side relative to the pressing portion 4a of the pressing member 4, or it may be horizontal with respect to the fastening portion 4d of the pressing member 4.

[0078] Furthermore, in the above embodiment, a groove 11e is formed on the upper part of the bottom 11a of the case 11, but the embodiment is not limited to this configuration. For example, instead of a groove 11e that serves as a water channel, an air cooling fan may be provided on the upper part or above the bottom 11a of the case 11.

[0079] Furthermore, in the above embodiment, the power converter 1 is housed in a case 11 as the mounting target, but it is not limited to such a configuration. For example, the mounting target may be a substantially planar member without walls, such as a side wall portion 11c, or the mounting area may be surrounded by other components.

[0080] Furthermore, in the above embodiment, the power converter 1 is housed only in the case 11, but the embodiment is not limited to this configuration. For example, the power converter 1 housed in case 11 may be housed in another case. This case has a box shape. The volume of the case is larger than the volume of case 11. The power converter 1 housed in case 11 is surrounded by the walls of the case. The case is, for example, a T / A case (transaxle case). The case may be mounted on a vehicle, for example.

[0081] Furthermore, in the above embodiment, the protruding portion 6 is provided on the pressing member 4 that presses against the core of a transformer in which the winding C is provided on the front surface, back surface, and inner layer of the substrate 2. However, the configuration is not limited to a transformer in which the winding C is provided on the substrate 2. For example, the protruding portion 6 may be provided on the pressing member 4 that presses against the core of a transformer using a plate-shaped or wire-shaped coil that is constructed separately from the substrate 2. Moreover, the pressing member 4 may be used to press against the core of a reactor. In this case, the core of the transformer and the core of the reactor are components used in the power conversion device 1.

[0082] Furthermore, in the above embodiment, the pressing portion 4a presses the transformer core against the substrate 2 as a plurality of electrical components A, but it is not limited to such a configuration. For example, the pressing portion 4a may also press components mounted on the substrate 2 against the substrate 2 as electrical components A other than the transformer core.

[0083] For example, the pressing portion 4a may press the heating element against the substrate 2. Figure 7 is an enlarged cross-sectional view showing a modified example of the power conversion device 1A of the present invention. The power conversion device 1A is provided with a heating element as an electrical component A mounted on the substrate 2. The power conversion device 1A is also provided with a heat sink 60 between the heating element and the substrate support member 3. The heat sink 60 may be formed integrally with the substrate support member 3. The lead wires 40 of the heating element extend to the substrate 2 and are soldered to wiring (not shown) formed on the substrate 2.

[0084] The heat sink 60 is positioned on the substrate support member 3. The heat sink 60 is positioned on one end of the power converter 1A in the first direction D1. In the first direction D1, the heat sink 60 is adjacent to the fixing portion 3a of the substrate support member 3. As shown in Figure 7, the pressing portion 4a may press the heat generating element toward the substrate 2 together with the heat sink 60. [Explanation of Symbols]

[0085] 1,1A...power conversion device, 2...board, 3...board support member, 3a...fixing part, 3d...edge, 4...pressing member, 4a...pressing part, 4d...fastening part (fixed part), 5...grasped part, 6...projection part, 6c...tip, A...electrical component, K...virtual line, m...center of gravity, S...mounting device, Sa...grasping arm.

Claims

1. A power converter that is mounted on the target object by the mounted device, A circuit board on which multiple electrical components are mounted, A substrate support member that supports the aforementioned substrate, A pressing member having a fixed portion that is fixed to the substrate support member and a pressing portion that presses at least one of the components used in the power conversion device or the plurality of electrical components against the substrate side, The device comprises a plurality of gripping parts that engage with the gripping arm of the mounted device, At least one of the plurality of gripping portions is an overhang provided on the pressing member, The substrate support member has a fixing portion for fixing the pressing portion, The power conversion device wherein the protruding portion is located closer to the edge of the substrate support member than the fixed portion.

2. The power conversion device according to claim 1, wherein the protruding portion protrudes from the substrate on the side opposite to the fixed portion.

3. The power conversion device according to claim 1, wherein the tip of the protruding portion is located inside the substrate support member, beyond the edge of the substrate support member.

4. The number of gripped parts is at least three, The power conversion device according to claim 1, wherein the center of gravity of the power conversion device is located inside the imaginary line connecting the at least three gripped parts.

5. The aforementioned component is the core of a transformer or reactor. The power conversion device according to claim 1, wherein the pressing portion presses the core against the substrate side.

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