Power conversion device

Abstract

Provided is a power conversion device capable of improving the space efficiency of a mounting object. A power conversion device (1) is mounted on a mounting object by a mounting device (S). The power conversion device includes a substrate (2) on which a plurality of electrical components (A) are mounted, a substrate support member (3) that supports the substrate, a pressing member (4) that has a fastening portion (4d) fixed to the substrate support member and a pressing portion (4a) that presses at least one of a component used in the power conversion device or the plurality of electrical components (A) toward the substrate side, and a plurality of held portions (5) that engage with a holding arm of the mounting device, at least one of the plurality of held portions being an extension portion (6) provided at the pressing member, the substrate support member having a fixing portion (3a) that fixes the pressing portion, and the extension portion being located at a side of a rim portion (3d) of the substrate support member than the fixing portion.

Description

Technical Field

[0001] This invention relates to power conversion devices. Background Technology

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

[0003] Patent Document 1: Japanese Patent Application Publication No. 2017-79545

[0004] There are cases where power conversion devices include a plate-shaped substrate support member for supporting a substrate on which electrical components are mounted. Patent Document 1 discloses a structure where the substrate is supported by an aluminum plate. In such power conversion devices, the substrate support member is held and transported to the mounting position. However, when mounted inside a housing, the holding arm of the mounting device is hooked onto the holding portion of the substrate support member for holding. However, the walls of the housing and other components obstruct the holding arm from extending from the side of the substrate support member, thus requiring the power conversion device to be lifted by the holding arm. Since the substrate is positioned above the substrate support member, the holding portion is configured to bypass the substrate and hook onto the holding arm extending from above. In this case, if the area occupied by the holding portion inside the housing is large, the space for mounting the substrate becomes smaller. The holding portion, which is only used when mounting the power conversion device, should ideally be designed to save as much space as possible. Therefore, there is room for improvement in terms of the space efficiency of the housing to which the mounting is intended. Summary of the Invention

[0005] The purpose of this invention is to provide a power conversion device that can improve the space efficiency of the mounted object.

[0006] (1) The 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 for supporting the substrate; a pressing member having a fixed portion fixed to the substrate support member and a pressing portion for pressing a component or at least one of the plurality of electrical components used in the power conversion device toward the substrate side; and a plurality of gripped portions engaging with a gripping arm of the mounting device, wherein at least one of the plurality of gripped portions is a protrusion provided at the pressing member, the substrate support member having a fixing portion for fixing the pressing portion, and the protrusion being located on the edge side of the substrate support member closer to the fixing portion than the fixing portion.

[0007] The power conversion device described above includes: a pressing member having a pressing portion for pressing at least one of a plurality of electrical components toward a substrate side; and a plurality of gripping portions that engage with a gripping arm of a mounting device. A substrate support member has a fixing portion for fixing the pressing portion of the pressing member. At least one of the plurality of gripping portions is a protrusion provided on the pressing member extending outward toward the substrate support member and located on the edge side of the substrate support member closer to the fixing portion than the fixing portion. In this structure, since at least one of the plurality of gripping portions is provided on the protrusion of the pressing member, the structure for engaging with the gripping arm at the substrate support member can be omitted. This allows for miniaturization of the substrate support member. Therefore, the space efficiency of the mounted object can be improved. Furthermore, since the protrusion is located on the edge side of the substrate support member closer to the fixing portion than the fixing portion, it is easy to engage the gripping arm of the mounting device with the protrusion.

[0008] (2) Alternatively, in (1) above, the protrusion protrudes to the opposite side of the substrate relative to the fixed part. In such a structure, the gripping arm of the mounting device can easily engage with the protrusion while avoiding electrical components mounted on the substrate.

[0009] (3) Alternatively, in (1) or (2) above, the end of the protrusion is located inside the substrate support member, closer to the edge of the substrate support member. In such a structure, the space between the protrusion and the substrate support member can be effectively utilized.

[0010] (4) Alternatively, in any of (1) to (3) above, the number of gripping parts is at least three, and the center of gravity of the power conversion device is located inside the imaginary line connecting the at least three gripping parts. In such a structure, the power conversion device can be stably lifted by the gripping arm of the mounting device.

[0011] (5) Alternatively, in any of (1) to (4) above, the component is the core of a transformer or reactor, and the pressing part presses the core toward the substrate side. In such a structure, for example, power can be efficiently converted by a transformer, or power can be stabilized by a reactor.

[0012] According to the present invention, the space efficiency of the mounted object can be improved. Attached Figure Description

[0013] Figure 1 This is a top view showing the power conversion device according to an embodiment of the present invention.

[0014] Figure 2 It is along Figure 1 The cross-sectional view along line II-II shown.

[0015] Figure 3 It is an enlarged perspective view showing the area of ​​the power conversion device, including the pressing component.

[0016] Figure 4 It is a schematic top view showing the center of gravity of multiple controlled parts and power conversion devices.

[0017] Figure 5 This is a top view of the power conversion device involved in the comparative example.

[0018] Figure 6 It is along Figure 5 The sectional view along line VI-VI is shown.

[0019] Figure 7 This is an enlarged cross-sectional view showing a variation of the power conversion device according to the present invention.

[0020] Explanation of reference numerals in the attached figures

[0021] 1, 1A... power conversion device; 2... substrate; 3... substrate support member; 3a... fixing part; 3d... edge part; 4... pressing member; 4a... pressing part; 4d... fastening part (fixed part); 5... gripped part; 6... protruding part; 6c... end; A... electrical component; K... imaginary line; m... center of gravity; S... mounting device; Sa... gripping arm. Detailed Implementation

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Furthermore, in the drawings, the same or equivalent elements are labeled with the same reference numerals, and repeated descriptions are omitted.

[0023] Figure 1 This is a top view showing the power conversion device according to an embodiment of the present invention. Figure 1 In this section, only the outline is shown in substrate 2 (described later). Figure 2 It is along Figure 1 The cross-sectional view along line II-II shown. Figure 2 The power conversion device 1 is schematically shown, and cross-sections of the power conversion device 1 along the length and height directions are shown.

[0024] The power conversion device 1 is mounted on a mounting object via a mounting device S. The mounting object is, for example, the housing 11 of a power supply unit mounted on a vehicle such as a hybrid vehicle or an electric vehicle. The mounting device S is a device used to mount the power conversion device 1 onto the mounting object.

[0025] 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 of (two in this embodiment) pressing members 4, and a gripped part 5.

[0026] On substrate 2, a plurality of electrical components A (not shown) are mounted by soldering. Alternatively, electrical components A may not be mounted on substrate 2, but may be fixed and used by methods other than soldering. Electrical components A not mounted on substrate 2 include, for example,... Figure 2 The diagram shows the core of a transformer or reactor. Electrical component A, including the core of the transformer or reactor, is a component used in the power conversion device 1.

[0027] Hereinafter, the length direction of substrate 2 will be defined as the first direction D1, the width direction of substrate 2 as the second direction D2, and the direction orthogonal to both the first direction D1 and the second direction D2 as the third direction D3. However, these directions are for ease of explanation and do not limit the placement or orientation of the object. The second direction D2 is the direction that intersects the first direction D1. The third direction D3 is the thickness direction of substrate 2.

[0028] Electrical components A, serving as the core of a transformer, are disposed, for example, near the edge 2a of the substrate 2. For example, a pair of electrical components A, serving as the core of a transformer, are disposed on the surface and back of the substrate 2. The pair of electrical components A, serving as the core of a transformer, allow magnetic posts to pass through holes 2b formed in the substrate 2 and are arranged along the third direction D3 in a manner that clamps the substrate 2.

[0029] Alternatively, although the illustration is omitted, the substrate 2 may also have electronic components such as switching elements, heating elements, and windings of transformers or reactors arranged on it. Furthermore, it may also be as follows... Figure 3 As shown (described later), the transformer winding C (copper plate) is arranged around the hole 2b through which the magnetic post of the electrical component A, which serves as the core of the transformer, passes on the substrate 2. Alternatively, the transformer winding may be arranged on the inner layer or the back side of the substrate 2.

[0030] The substrate support member 3 supports the substrate 2. The substrate support member 3 is made of a metal such as aluminum. The substrate support member 3 is, for example, a die-cast plate. There is a case where the substrate support member 3 is referred to as the base plate.

[0031] The substrate support member 3 has a base portion 3f and multiple fixing portions 3a. The base portion 3f is located below the substrate 2 (on the side closest to the housing 11 in the third direction D3 relative to the substrate 2). 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. Multiple bosses (not shown) protrude from the base portion 3f toward the substrate 2 side, and the substrate 2 is fixed to the substrate support member 3 by screws connected to these bosses.

[0032] The fixing part 3a fixes the fastening part 4d (described later) of the fixed part, which is the pressing member 4. The fixing part 3a is located near the edge 3d of the substrate support member 3. The fixing part 3a is located at the first end 3b of the substrate support member 3 in the first direction D1. The fixing part 3a protrudes from the upper surface of the base part 3f. The fixing part 3a is adjacent to the edge 2a of the substrate 2.

[0033] The fixing part 3a extends from the base part 3f to the top of the substrate 2 (in the third direction D3, opposite to the bottom 11a of the housing 11 described below). When viewed from the third direction D3, a notch is formed in the portion of the substrate 2 that overlaps with the fixing part 3a. The upper end 3e of the fixing part 3a contacts the pressing member 4.

[0034] The fixing part 3a is, for example, cylindrical. The fixing part 3a is, for example, a boss. On the inner side of the cylindrical fixing part 3a, although not shown, a threaded groove is formed for screwing in the screw N. The screw N fastens the substrate support member 3 and the pressing member 4 together.

[0035] Alternatively, the power conversion device 1 may be housed in a housing 11. The housing 11 is box-shaped. The housing 11 has a bottom 11a and sidewalls 11c.

[0036] The bottom 11a extends along the substrate 2 and the substrate support member 3. The bottom 11a extends in the first direction D1 and the second direction D2. For example, the thickness of the bottom 11a is greater than the thickness of the base portion 3f of the substrate support member 3. Alternatively, the bottom 11a of the housing 11 may be provided with a substrate, components such as an inductor, or other electrical components, excluding the power conversion device 1.

[0037] A recess 11b is formed on the upper part of the bottom 11a of the housing 11. The recess 11b is recessed in the third direction D3 toward the side opposite to the substrate support member 3. The recess 11b is opposite to the substrate support member 3.

[0038] A plurality of protrusions 3h are formed on the lower part of the substrate support member 3 (the part opposite to the recess 11b). The protrusions 3h are plate-shaped and extend in the second direction D2. The protrusions 3h protrude from the base part 3f toward the recess 11b. The plurality of protrusions 3h are arranged in the first direction D1. If the substrate support member 3 is housed in the housing 11, a groove 11e is formed by the recess 11b of the housing 11 and the protrusions 3h of the substrate support member 3.

[0039] The groove 11e functions as a flow path for the refrigerant used to cool the power conversion device 1. The groove 11e can be, for example, a water channel. The shape of the groove 11e is not particularly limited. For example, the groove 11e can extend in either the first direction D1 or the second direction D2. A protrusion 3h extends from the base portion 3f of the substrate support member 3 to form the groove 11e, thereby increasing the contact area between the substrate support member 3 and the refrigerant, facilitating heat transfer from the substrate support member 3 to the refrigerant. Furthermore, the protrusion 3h may not be plate-shaped; it can be pin-shaped, etc.

[0040] The sidewall portion 11c protrudes upward from the bottom 11a (in the third direction, opposite to the recessed direction of the recess 11b). The sidewall portion 11c is erected from the bottom 11a along the third direction D3. The sidewall portion 11c is rectangular cylindrical. The sidewall portion 11c is located at both ends 11d of the bottom 11a in the first direction D1 and at both ends (not shown) in the second direction D2. The sidewall portion 11c surrounds the power conversion device 1.

[0041] The mounting device S has multiple gripping arms Sa. The gripping arms Sa of the mounting device S grip and move the power conversion device 1 to mount it onto the housing 11. The power conversion device 1 is lifted by the gripping arms Sa. The gripping arms Sa are movable, for example, in three axial directions.

[0042] The holding arm Sa is, for example, L-shaped. The end of the holding arm Sa bends toward the center of the power conversion device 1. As a result, the holding arm Sa can easily hold the power conversion device 1.

[0043] The gripped part 5 is the part that is hooked onto the gripping arm Sa when the power conversion device 1 is mounted on the housing 11. The gripped part 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 gripped parts 5.

[0044] The power conversion device 1 includes a plurality of (three in this embodiment) holding portions 5. Parts of the holding portions 5 are bent portions 7 provided on the substrate support member 3. A plurality of (two in this embodiment) bent portions 7 are provided on the substrate support member 3.

[0045] In this embodiment, of the two buckling portions 7 provided in the substrate support member 3, one buckling portion 7 is located on one side (second end 3c) of the substrate 2 in the length direction (first direction D1), and the other buckling portion 7 is located on one side of the substrate 2 in the width direction (second direction D2). Figure 2 In the middle, a buckling part 7 is shown.

[0046] The buckling portion 7 is integrated with the substrate support member 3. The buckling portion 7 is adjacent to the edge 2a of the substrate 2. The buckling portion 7 extends above the substrate 2. When viewed from the third direction D3, a notch is formed in the portion of the substrate 2 that overlaps with the buckling portion 7.

[0047] The buckled portion 7 protrudes from the base portion 3f of the substrate support member 3 toward the substrate 2. The buckled portion 7 protrudes from the second end portion 3c of the substrate support member 3. The buckled portion 7 is, for example, buckled in an L-shape.

[0048] The buckling portion 7 has a first portion 7a and a second portion 7b. The first portion 7a is the portion of the buckling portion 7 along 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.

[0049] Part 7b is the portion of the buckling portion 7 along the first direction D1. Part 7b is adjacent to part 7a. Part 7b is located on the outer side of the substrate support member 3, relative to the second end 3c of the substrate support member 3. Thus, the buckling portion 7 and the holding arm Sa can engage with each other.

[0050] Figure 3 This is an enlarged perspective view showing the area containing the pressing member in the power conversion device. The pressing member 4 is the component that presses down on electrical component A. Electrical components A, such as the transformer core, are components that need to be pressed down and supported by the pressing member 4.

[0051] The pressing member 4 functions as a bracket, for example. The pressing member 4 may also be elastic. The pressing member 4 may also be a leaf spring, for example. The pressing member 4 may also press the electrical component A by means of elastic force.

[0052] The pressing member 4 is disposed 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, stainless steel or other metal. The pressing member 4 is fixed to the fixing part 3a of the substrate support member 3.

[0053] The pressing member 4 has a fastening portion 4d. The fastening portion 4d is located at the center of the pressing member 4. A first through hole 4b is formed in the fastening portion 4d for fixing the pressing member 4 to the substrate support member 3. The pressing member 4 is fixed to the substrate support member 3 via the first through hole 4b by a screw N. The diameter of the first through hole 4b is large enough to allow the screw N to pass through.

[0054] At the fastening portion 4d, a plurality of (two in this embodiment) second through holes 4c are arranged along the length direction (first direction D1) of the pressing member 4. A plurality of (two in this embodiment) guides 3g of the substrate support member 3 pass through the second through holes 4c.

[0055] A guide member 3g is formed at the upper end 3e of the fixing portion 3a of the substrate support member 3. The guide member 3g protrudes upward from the upper end 3e (in the third direction, opposite to the base portion 3f). The guide member 3g is, for example, rod-shaped. The guide member 3g positions the pressing member 4 in the fixing portion 3a before the screw N is tightened, and functions as an anti-rotation member when the screw N is tightened.

[0056] The pressing member 4 has a pressing part 4a adjacent to the fastening part 4d in the longitudinal direction. The pressing part 4a presses at least one component of the power conversion device 1 or a plurality of electrical components A toward the substrate 2 side. For example, the pressing part 4a presses the iron core of a transformer toward the substrate 2 side. The pressing part 4a is located at one end portion of the pressing member 4 in the longitudinal direction.

[0057] It can also be like Figure 1 As shown, in the two pressing members 4 arranged along the first direction D1, the shapes of the pressing members 4 are different from each other. In the pressing member 4 located on the other side of the first direction D1 (opposite to the buckling portion 7), a pressing portion 4a extends from the fastening portion 4d. In addition, the object pressed by the pressing member 4 located on the other side of the first direction D1 is the iron core of the transformer.

[0058] Alternatively, in the pressing member 4 located on one side (the side of the buckling portion 7) in the first direction D1, a plurality of pressing portions 4a (two in this embodiment) extend from the fastening portion 4d. In this case, in this embodiment, one pressing portion 4a and the other pressing portion 4a extend in different directions relative to each other. Furthermore, the object pressed by the pressing member 4 located on one side in the first direction D1 is the iron core of the reactor.

[0059] Refer again Figure 3 A portion of the pressing member 4 located on the other side of the first direction D1 is used as the gripped portion 5 of the aforementioned power conversion device 1. Hereinafter, the gripped portion 5 of the pressing member 4 will be described as a protruding portion 6. That is, at least one of the plurality of gripped portions 5 is a protruding portion 6.

[0060] The protrusion 6 has the same function as the buckling portion 7. The protrusion 6 is provided on the pressing member 4. The protrusion 6 is located at the end of the pressing member 4 opposite to the pressing portion 4a, relative to the fastening portion 4d. The protrusion 6 extends from the fastening portion 4d of the pressing member 4 toward the side opposite to the pressing portion 4a.

[0061] The protrusion 6 is provided, for example, at one of the plurality of pressing members 4. In the planar direction defined by the first direction D1 and the second direction D2, the protrusion 6 is located on the side of the edge 3d of the substrate support member 3, closer to the fixing portion 3a of the substrate support member 3. In other words, when viewed from the third direction D3, the protrusion 6 is not located on the center side of the substrate support member 3, but on the edge 3d side. The end 6c of the protrusion 6 is located on the inner side of the substrate support member 3, closer to the edge 3d of the substrate support member 3.

[0062] The protrusion 6 protrudes toward the opposite side (upper side) of the substrate 2 relative to the fastening part 4d (i.e., the fixed part) in the third direction D3. The protrusion 6 bends upward relative to the substrate 2 from the fastening part 4d of the pressing member 4 in a generally L-shape. The protrusion 6 has a first part 6a and a second part 6b.

[0063] Part 6a is the portion of the protrusion 6 along the third direction D3. Part 6a is adjacent to the fastening portion 4d of the pressing member 4. Part 6a is bent at approximately a right angle relative to the fastening portion 4d of the pressing member 4, for example.

[0064] Part 2, 6b, is the portion of the protrusion 6 along the first direction D1. Part 2, 6b, is adjacent to part 1, 6a. With respect to part 1, 6a, part 2, 6b is located on the opposite side to the fastening portion 4d of the pressing member 4. Part 2, 6b, is bent at approximately a right angle relative to part 1, 6a. When viewed from the third direction D3, part 2, 6b, is, for example, rectangular.

[0065] The second part 6b is further away from the substrate 2 than the fastening part 4d of the pressing member 4. This allows the holding arm Sa to easily enter the space between the substrate 2 and the second part 6b. The second part 6b contacts the holding arm Sa. The second part 6b has sufficient strength to be held by the holding arm Sa. Furthermore, since the holding arm Sa can easily enter the space between the substrate 2 and the second part 6b, the space of the power conversion device 1 can be effectively utilized.

[0066] Figure 4 It is a schematic top view showing the center of gravity of multiple controlled parts and power conversion devices. Figure 4 Only the outlines of the gripped portion 5 and the substrate support member 3 are shown. For example, the number of gripped portions 5 is at least three. In this embodiment, the center of gravity m of the power conversion device 1 is located inside the portion surrounded by an imaginary line K that imaginarily connects the three gripped portions 5. The imaginary line K is a line that imaginarily connects the centers of the three gripped portions 5. The center of gravity m is surrounded by the imaginary line K.

[0067] The imaginary line K is polygonal (triangular in this embodiment). The center of gravity m of the power conversion device 1 is located inside the imaginary line K, so that the power conversion device 1 can be stably suspended by the holding arm Sa.

[0068] Figure 5 This is a top view of the power conversion device involved in the comparative example. Figure 6 It is along Figure 5 The sectional view along line VI-VI is shown.

[0069] The power conversion device 1X described in the comparative example differs from the power conversion device 1 of this embodiment in that the pressing member 4X does not have a protruding portion 6. The base plate support member 3X of the power conversion device 1X also differs from the power conversion device 1 in that it has a holding portion 5, which is the same as the bending portion 7, instead of a protruding portion 6. Consequently, the shape of the base plate 2X also differs from that of the base plate 2.

[0070] The substrate support member 3X has a holding portion 5 at both the second end 3c and the first end 3b. All holding portions 5 of the power conversion device 1X are provided on the substrate support member 3X in the form of bent portions 7. The holding 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 holding portion 5 (bent portion 7) adjacent to the pressing member 4X is a protrusion that protrudes upward.

[0071] If the area occupied by the gripping part 5 within the housing 11 is large, the space for mounting the substrate 2X becomes smaller. As described above, on the one hand, it is necessary to ensure sufficient space between the power conversion device 1X and the housing 11, taking into account the mobility of the gripping arm Sa in three axial directions; on the other hand, the gripping part 5 needs to be provided on the substrate support member 3X. As a result, the area occupied by the gripping part 5 may be encroached upon. The gripping part 5, which is only used when the power conversion device 1X is mounted, should ideally be provided in a space-saving manner.

[0072] Therefore, the power conversion device 1 of this embodiment includes: a pressing member 4 having a pressing portion 4a for pressing a component or at least one of a plurality of electrical components A for the power conversion device 1 toward 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 for fixing the pressing portion 4a of the pressing member 4. At least one of the plurality of gripped portions 5 is a protrusion 6 located on the edge 3d side of the substrate support member 3, closer to the fixing portion 3a. In such a structure, since at least one of the plurality of gripped portions 5 is a protrusion 6 provided at the pressing member 4, the structure engaging with the gripping arm Sa can be omitted in the substrate support member 3. As a result, the substrate support member 3 can be miniaturized. Therefore, the space efficiency of the housing 11 can be improved. Furthermore, since the protrusion 6 is located on the edge 3d side of the substrate support member 3, closer to the fixing portion 3a, the gripping arm Sa of the mounting device S can be easily engaged with the protrusion 6.

[0073] Furthermore, in this embodiment, the protrusion 6 protrudes to the opposite side of the substrate 2 relative to the fastening portion 4d of the pressing member 4. In this structure, the gripping arm Sa of the mounting device S can easily engage with the protrusion 6, avoiding the electrical component A mounted on the substrate 2.

[0074] Furthermore, in this embodiment, the end 6c of the protrusion 6 is located inside the substrate support member 3, closer to the edge 3d of the substrate support member 3. In this structure, the space between the protrusion 6 and the substrate support member 3 can be effectively utilized. For example, it is also possible to... Figure 3 In this way, the space provided by the screw N1 for extending the substrate 2 and fixing it to the substrate support member 3 can be used, or other components can be configured.

[0075] Furthermore, in this embodiment, the number of gripping parts 5 is at least three, and the center of gravity m of the power conversion device 1 is located inside the portion surrounded by the imaginary line K that connects at least three gripping parts 5. In such a structure, the power conversion device 1 can be stably suspended by the gripping arm Sa of the mounting device S.

[0076] Furthermore, in this embodiment, electrical component A is the core of a transformer or reactor, and the pressing part 4a of the pressing member 4 presses the core towards the substrate 2. In such a structure, for example, power can be efficiently converted by a transformer, or power can be stabilized by a reactor.

[0077] Refer again Figure 5 There is a situation where the area occupied by the holding part 5 encroaches on the substrate 2X, making it impossible to arrange components mounted on the substrate 2X. If the area of ​​the substrate 2X is increased to accommodate components, the overall size of the power conversion device 1X will increase.

[0078] In contrast, in the power conversion device 1 of this embodiment, a protruding portion 6 is provided in the pressing member 4, so the space occupied by the holding portion 5 provided in the substrate support member 3X can be utilized in the substrate 2. As a result, the power conversion device 1 can be miniaturized.

[0079] Furthermore, since the structure corresponding to the holding portion 5 can be omitted from the substrate support member 3, the amount of material used to form the substrate support member 3 can be reduced. This reduces the manufacturing cost of the substrate support member 3. With the substrate support member 3 having its structure omitted, quality assurance becomes easier due to the reduced number of inspection items.

[0080] Furthermore, the structure of the substrate support member 3 can be simplified, making the substrate support member 3 lighter. Moreover, since a structure corresponding to the held portion 5 can be omitted from the substrate support member 3, the manufacture of the substrate support member 3 becomes easier.

[0081] During the manufacturing of the substrate support member 3, there is a situation where the material forming the substrate support member 3 is cooled. If the thickness of the substrate support member 3 is uneven, the temperature of the substrate support member 3 during manufacturing may become uneven. In this case, at protruding portions such as the holding portions 5, the material may not solidify and instead burn. Thus, in substrate support members 3X ​​having multiple holding portions 5, there is a possibility of quality degradation.

[0082] Furthermore, when the substrate support member 3X is formed using a molding die, its shape becomes more complex, corresponding to the shape of the holding part 5. Therefore, it is necessary to apply stronger pressure to the molding die. Consequently, it is necessary to use equipment capable of applying stronger pressure, which increases the manufacturing cost of the substrate support member 3X.

[0083] Since a portion of the holding portion 5 is omitted in the substrate support member 3 of this embodiment, burns on the substrate support member 3 can be suppressed, and quality can be maintained. Furthermore, since the substrate support member 3 can be formed without strong pressure, the manufacturing cost of the substrate support member 3 can be reduced.

[0084] The present invention has been described above with reference to several embodiments, but the present invention is not limited to the embodiments described above. For example, in the embodiments described above, the protrusion 6 is provided at one of the plurality of pressing members 4, but it is not particularly limited to this manner. For example, the protrusion 6 may be provided at all of the pressing members 4.

[0085] Furthermore, in the above embodiment, the protrusion 6 protrudes toward the opposite side of the substrate 2 relative to the fastening portion 4d of the pressing member 4 in the third direction D3, but is not particularly limited to this manner. For example, the protrusion 6 may also protrude toward the substrate 2 relative to the pressing portion 4a of the pressing member 4, or it may be flush with the fastening portion 4d of the pressing member 4.

[0086] Furthermore, in the above embodiment, a groove 11e is formed in the upper part of the bottom 11a of the housing 11, but it is not particularly limited to this method. For example, an air-cooled fan may be provided in place of the groove 11e, which serves as a water channel, in the upper part or above the bottom 11a of the housing 11.

[0087] Furthermore, in the above embodiment, the power conversion device 1 is housed in the housing 11, which serves as the mounting object, but it is not particularly limited to this arrangement. For example, the mounting object may be a generally planar member without walls, such as the side wall portion 11c, and the mounting portion may be surrounded by other components.

[0088] Furthermore, in the above embodiment, the power conversion device 1 is housed only in the housing 11, but it is not particularly limited to this arrangement. For example, the power conversion device 1 housed in the housing 11 may also be housed in another housing. This housing is box-shaped. The volume of the housing is larger than the volume of the housing 11. The power conversion device 1 housed in the housing 11 is surrounded by the walls of the housing. The housing is, for example, a T / A housing (drive axle housing). The housing may also be mounted on a vehicle, for example.

[0089] Furthermore, in the above embodiment, a protruding portion 6 is provided at the pressing member 4 that presses the core of the transformer, on the surface, back, and inner layer of the substrate 2 where the winding C is disposed, but the transformer is not limited to a structure where the winding C is disposed on the substrate 2. For example, the protruding portion 6 may also be provided at the pressing member 4 that presses the core of a transformer using a plate-shaped or wire-shaped coil separately from the substrate 2. Furthermore, the pressing member 4 may also be provided for pressing the core of a reactor. In this case, the core of the transformer and the core of the reactor are components for the power conversion device 1.

[0090] Furthermore, in the above embodiment, the pressing part 4a presses the core of the transformer, which is a plurality of electrical components A, toward the substrate 2 side, but is not particularly limited to this method. For example, the pressing part 4a may also press the components mounted on the substrate 2, other than the core of the transformer, which are electrical components A, toward the substrate 2 side.

[0091] For example, the pressing part 4a can press the heating element toward the substrate 2. Figure 7This is an enlarged cross-sectional view showing a modified example of the power conversion device 1A according to the present invention. In the power conversion device 1A, a heating element is provided as an electrical component A mounted on the substrate 2. Furthermore, a heat sink 60 is provided between the heating element and the substrate support member 3 in the power conversion device 1A. Alternatively, the heat sink 60 may be integrally formed with the substrate support member 3. The wire 40 of the heating element extends toward the substrate 2 and is soldered to wiring (not shown) formed on the substrate 2.

[0092] A heat sink 60 is disposed on the substrate support member 3. The heat sink 60 is located at one end of the power conversion device 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. Alternatively, as... Figure 7 As shown, the pressing part 4a presses the heating element and the heat sink 60 together toward the substrate 2 side.

Claims

1. A power conversion device, which is a power conversion device mounted on a mounting object via a mounting device, characterized in that, have: The substrate, on which multiple electrical components are mounted; A substrate support member that supports the substrate; The pressing member has a fixed portion fixed to the substrate support member and a pressing portion for pressing a component used in the power conversion device or at least one of the plurality of electrical components toward the substrate side; as well as Multiple gripping parts engage with the gripping arms of the mounting device. At least one of the plurality of gripped portions is a protrusion provided at the pressing member. The substrate support member has a fixing part for fixing the pressing part. The protruding portion is located on the edge side of the substrate support member, which is closer to the fixed portion.

2. The power conversion device according to claim 1, characterized in that, The protrusion extends to the opposite side of the substrate relative to the fixed portion.

3. The power conversion device according to claim 1, characterized in that, The end of the protrusion is located inside the substrate support member, closer to the edge of the substrate support member.

4. The power conversion device according to claim 1, characterized in that, The number of the grasped parts is at least three. The center of gravity of the power conversion device is located inside the portion surrounded by the imaginary lines connecting the at least three holding parts.

5. The power conversion device according to claim 1, characterized in that, The component in question is the iron core of a transformer or reactor. The pressing part presses the iron core toward the substrate side.

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