CN111313656A - Power supply device - Google Patents
Power supply device Download PDFInfo
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- CN111313656A CN111313656A CN201911265203.2A CN201911265203A CN111313656A CN 111313656 A CN111313656 A CN 111313656A CN 201911265203 A CN201911265203 A CN 201911265203A CN 111313656 A CN111313656 A CN 111313656A
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- power supply
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- 239000004065 semiconductor Substances 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 238000005192 partition Methods 0.000 claims description 31
- 238000000638 solvent extraction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
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- 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
- H02M1/00—Details of apparatus for conversion
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A power supply device is provided, which can realize the miniaturization of the installation space. The power supply device mounted on the mounted portion includes an electronic component and a housing having a housing portion for housing the electronic component. The housing has a fixed portion fixed to the mounted portion. The fixed portion has an opening recess that opens on the outer surface of the housing, and protrudes from the inner surface of the housing toward the receiving portion.
Description
Technical Field
The present invention relates to a power supply device.
Background
For example, an electric vehicle, a hybrid vehicle, or the like is provided with a power conversion device such as an inverter or a converter. The power conversion device accommodates electronic components in a case made of metal or the like. Further, for example, in a power converter disclosed in japanese patent No. 6055868 (hereinafter, sometimes referred to as "patent document 1"), a housing is provided with a fixed portion to be fixed to a mounting portion such as a vehicle body or a bracket fixed to the vehicle body.
However, in the power conversion device disclosed in patent document 1, the fixed portion is formed in a portion protruding outward from the outer surface of the case. Therefore, a space having a certain area or more is required for installing the power conversion device.
Disclosure of Invention
The invention provides a power supply device, which can realize miniaturization of an installation space.
A power supply device (1) as one embodiment of the technology of the present invention is a device mounted on a mounted part (61).
The power supply device includes an electronic component (2) and a case (3) having a housing section (31) for housing the electronic component.
The housing has a fixed portion (32) fixed to the attached portion.
The fixed portion protrudes from the inner surface 39 of the housing toward the accommodating portion.
According to the power supply device of the present invention, the fixed portion fixed to the attached portion is provided to protrude from the inner surface of the housing toward the accommodating portion. Thus, the power supply device of the present invention can prevent the fixed portion from protruding outward from the outer surface of the case. As a result, the power supply device of the present invention can reduce the installation space of the power supply device in the installed portion.
As described above, according to the above aspect, it is possible to provide a power supply device that can achieve a reduction in the installation space.
In addition, the symbols in parentheses described in the claims and the means for solving the technical problems indicate the correspondence with the specific elements described in the embodiments described below, and do not limit the technical scope of the present invention.
Drawings
Fig. 1 is a perspective view of a power supply device in a first embodiment.
Fig. 2 is a plan view of the power supply device in the first embodiment.
Fig. 3 is a sectional view taken along the line III-III shown in fig. 2.
Fig. 4 is a plan view of the power supply device with the cover removed in the first embodiment.
Fig. 5 is a sectional view taken along line V-V shown in fig. 3.
Fig. 6 is a perspective view of the cover in the first embodiment.
Fig. 7 is an enlarged sectional view of a fixed portion in the first embodiment.
Fig. 8 is a front view of the power supply device fixed to the vehicle body via the attached portion in the first embodiment.
Fig. 9 is a cross-sectional view showing a state where a screw is screwed with a fixed part in the first embodiment.
Fig. 10 is a plan view of the power supply device in the second embodiment.
Fig. 11 is a plan view of the power supply device in the third embodiment.
Fig. 12 is a cross-sectional view taken along line XII-XII in fig. 11.
FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. 11.
Fig. 14 is a plan view of a power supply device in the fourth embodiment.
Fig. 15 is a cross-sectional view taken along the line XV-XV in fig. 14.
Fig. 16 is a plan view of the power supply device in the fifth embodiment.
Fig. 17 is a cross-sectional view taken along line XVII-XVII in fig. 16.
Detailed Description
(first embodiment)
The power supply device of the present embodiment will be described with reference to fig. 1 to 9.
As shown in fig. 8, the power supply device 1 of the present embodiment is mounted on a mounting portion 61 (e.g., a bracket described later). As shown in fig. 1 to 5, the power supply device 1 includes an electronic component 2 and a case 3. The housing 3 includes a housing portion 31 that houses the electronic component 2. As shown in fig. 1 to 3, the housing 3 has a fixed portion 32 fixed to the attached portion 61. The fixed portion 32 is open on the outer surface 33 of the housing 3 and protrudes toward the accommodating portion 31. More specifically, as shown in fig. 7, the fixed portion 32 has an opening recess 321 that opens on the outer surface 33 of the housing 3, and is provided in the housing 3 so as to protrude from the inner surface 39 of the housing 3 toward the accommodating portion 31 (toward the inside of the housing 3).
As shown in fig. 2 to 5, the storage unit 31 of the present embodiment stores, for example, one power conversion circuit unit 11, a first noise filter circuit unit 12, and a second noise filter circuit unit 13 (a plurality of noise filter circuit units). Each of the noise filter circuit units 12 and 13 is a circuit for removing noise superimposed on the input/output power of the power conversion circuit unit 11. As shown in fig. 2, the fixed portion 32 is disposed at a position overlapping with the disposition region of the first noise filter circuit portion 12 when viewed from the opening direction. The case 3 has conductivity.
The power supply device 1 of the present embodiment is a DC-DC converter that converts an input voltage into an output voltage of a different voltage.
As shown in fig. 3 to 5, the power conversion circuit portion 11 includes, as the electronic component 2, a first semiconductor element 21, a second semiconductor element 22 (a plurality of semiconductor elements), a transformer 23, and a choke coil 24. In the present embodiment, the first semiconductor element 21 corresponds to a switching element, and the second semiconductor element 21 corresponds to a rectifying element. The transformer 23 is connected to a first semiconductor element 21 (switching element) on the primary winding side. The transformer 23 is connected to a second semiconductor element 22 (rectifier element) on the secondary winding side. A choke coil 24 is connected to the transformer 23 on the secondary winding side.
In the present embodiment, as the switching element of the first semiconductor element 21, for example, an IGBT (Insulated Gate Bipolar Transistor) or a MOSFET (Metal-oxide semiconductor Field Effect Transistor) can be used. In the present embodiment, the plurality of first semiconductor elements 21 (switching elements) are integrated to form a semiconductor module. In addition, the plurality of second semiconductor elements (rectifier elements) are integrated to constitute a semiconductor module. In fig. 3, 5, and the like, these semiconductor modules are represented as a first semiconductor element 21 and a second semiconductor element 22. However, the plurality of first semiconductor elements 21 (switching elements) and the plurality of second semiconductor elements 22 (rectifying elements) may be provided separately. That is, it may be provided as a discrete semiconductor element (discrete semiconductor).
The second noise filter circuit unit 13 is connected as an input filter unit to the input side (i.e., the primary side) of the power conversion circuit unit 11. The first noise filter circuit unit 12 is connected as an output filter unit to the output side (i.e., the secondary side) of the power conversion circuit unit 11. The first noise filter circuit section 12 (output filter section) has a first inductor 25 and a first capacitor (not shown). In the present embodiment, a plurality of first inductors 25 are provided. The second noise filter circuit unit 13 (input filter unit) also has a second inductor and a second capacitor. However, these drawings are omitted.
The power conversion circuit portion 11, the first noise filter circuit portion 12, and the second noise filter circuit portion 13 are housed in a housing portion 31 of the case 3. The power conversion circuit unit 11, the first noise filter circuit unit 12, and the second noise filter circuit unit 13 are arranged in the housing unit 31 in this order. In the present embodiment, the arrangement direction of the circuit portions is appropriately referred to as the X direction. In the present embodiment, the housing 3 has a long shape in the X direction and a short shape in the Y direction. Accordingly, the housing portion 31 also has a long shape in the X direction and a short shape in the Y direction.
As shown in fig. 1 and 3, the housing 3 includes a first structure 301 and a second structure 302. The first structure 301 is a structure provided with the fixed portion 32. The second structure 302 is a structure that forms the housing portion 31 by combining with the first structure 301. The first semiconductor element 21 and the second semiconductor element 22 are mounted on the second structure body 302.
In the present embodiment, the second structure 302 is a substantially rectangular parallelepiped case main body 3B having one surface opened. The first structure 301 is a lid 3C that covers the opening surface of the case body 3B. The lid 3C is fastened and fixed to the periphery of the opening surface of the case body 3B by screws 35. The arrangement direction of the case body 3B and the lid body 3C is appropriately referred to as the Z direction. The Y direction is a direction orthogonal to both the Z direction and the X direction.
The case body 3B has a bottom portion 341 formed at a position opposite to the opening surface, and a peripheral wall portion 342 erected in the Z direction from the outer peripheral portion of the bottom portion 341. In the present embodiment, the first semiconductor element 21 and the second semiconductor element 22 are fixed to the case body 3B so as to face the inner surface 37 of the bottom portion 341.
Other electronic components 2 including the transformer 23, the choke coil 24, and the inductor 25 are also fixed to the case main body 3B.
As shown in fig. 3, the transformer 23 and the choke coil 24 are disposed at a predetermined position Pz (a position distant from the inner surface 37 of the bottom portion 341 in the Z direction by a distance Da) apart from the bottom portion 341 in the Z direction in the housing portion 31 of the case 3. The transformer 23 and the choke coil 24 are disposed closer to the lid 3C than the bottom 341 in the Z direction (Da > Db).
In the first noise filter circuit unit 12, the inductor 25 is disposed on the housing body 3B facing the inner surface 37 of the bottom 341 in the housing portion 31 of the housing 3.
As shown in fig. 1 to 3 and 6, the fixed portion 32 is formed on the lid body 3C as the first structure body 301. In the present embodiment, as shown in fig. 2, the fixed portions 32 are formed at four different positions when viewed in the Z direction (opening direction).
As shown in fig. 7, the fixed portion 32 has an opening recess 321 that opens outward from the outer surface 33 of the lid body 3C in the Z direction. The opening recess 321 is provided to protrude from the inner surface 39 of the lid body 3C toward the accommodating portion 31 side in the Z direction. In the present embodiment, the fixed portion 32 corresponds to a female screw portion. That is, the opening recess 321 of the fixed portion 32 has a spiral female screw formed on the inner surface 42.
As shown in fig. 3, 6, and 7, in the fixed portion 32, the opening recess 321 that opens to the outer surface 33 of the cover 3C (the first structure 301) does not penetrate the accommodating portion 31. That is, the protruding portion of the fixed portion 32 is formed in a cap screw shape. In other words, the fixed portion 32 has a closed protruding end 322 that closes the bottom 43 of the opening recess 321 as a female screw hole at an end protruding from the inner surface 39 of the cover 3C (the first structure 301) toward the accommodating portion 31 in the Z direction.
The fixed portion 32 protrudes from the inner surface 39 of the cover 3C toward the accommodating portion 31 in the Z direction. As shown in fig. 1, 3, and 7 to 9, in the present embodiment, a protruding seating surface 323 is formed around the opening of the fixed portion 32. In other words, as shown in fig. 7, a protruding seat surface 323 is formed around the opening 41 of the opening recess 321. The projection seat face 323 projects in the Z direction from the outer face 33 of the lid 3C around it. The projection amount B of the projection seat surface 323 from the outer surface 33 of the housing 3C is smaller than the projection amount a of the fixed portion 32 projecting toward the receiving portion 31. For example, the projection amount B of the projection seat face 323 can be set to be equal to or less than the thickness C of the lid body 3C (B ≦ C). The amount a of projection of the fixed portion 32 to the receiving portion 31 side can be larger than the thickness C of the cover 3C (a > C), for example.
As shown in fig. 2, in the present embodiment, two of the four fixed portions 32 (some of the plurality of fixed portions) are formed at positions overlapping with the arrangement region of the first noise filter circuit portion 12 when viewed from the Z direction (opening direction). In addition, the other two fixed portions 32 are formed at positions on the second noise filter circuit portion 13 opposite to the power conversion portion 11 when viewed from the Z direction.
As shown in fig. 3, the position of the closed projecting end portion 322 of the fixed portion 32 in the Z direction is located on the side closer to the inner surface 37 of the bottom portion 341 than the position of the end portion of the inductor 25 on the cover 3C side (height from the bottom portion 341). That is, the closed protruding end portion 322 is disposed at a position closer to the bottom portion 341 than the end portion of the inductor 25 on the lid body 3C side.
The lid 3C including the fixed portion 32 is made of a metal having conductivity. The case body 3B is made of a metal having conductivity. The case body 3B and the lid 3C are made of, for example, aluminum, stainless steel, or the like.
As shown in fig. 8, the power supply device 1 is fixed to the attached portion 61. In the present embodiment, the attached portion 61 is, for example, a bracket fixed to the vehicle body 60 of the vehicle. Hereinafter, the attached portion 61 is sometimes referred to as a bracket 61 for convenience. The bracket 61 is fastened and fixed to the vehicle body 60 by a plurality of first screws 62. The power supply device 1 is fastened and fixed to the bracket 61 by a plurality of second screws 63 (attachment members). That is, the plurality of fixed portions 32 provided in the housing 3 are fastened to the bracket 61 by the second screws 63. Thereby, the power supply device 1 is fixed to the bracket 61.
The bracket 61 includes a flat plate portion 611, a pair of upright portions 612, and a pair of flange portions 613. A pair of standing portions 612 are respectively erected along the Z direction on both sides of the flat plate portion 611 in the X direction. The pair of flange portions 613 protrude outward from the installation position of the power supply device 1 in the X direction substantially in parallel with the flat plate portion 611 from a second end portion of the upright portion 612 opposite to the first end portion joined to the flat plate portion 611.
The flange portion 613 of the bracket 61 is fastened and fixed to a part of the vehicle body 60 by a plurality of first screws 62. Therefore, the flange 613 has a through hole for inserting the first screw 62 at a predetermined position. Then, the power supply device 1 is disposed on the surface of the flat plate portion 611 of the bracket 61 that faces the vehicle body 60. More specifically, the cover 3C (i.e., the first structure 301) of the case 3 of the power supply device 1 is provided so as to face the flat plate portion 611 of the bracket 61. Then, as shown in fig. 8 and 9, in the power supply device 1, the protruding seat surface 323 of the fixed portion 32 provided in the case 3 abuts against the flat plate portion 611 of the bracket 61. The flat plate portion 611 has a through hole 614 for inserting the second screw 63 at a predetermined position. Therefore, the second screw 63 is inserted through the through hole 614 provided at a predetermined position of the flat plate portion 611, inserted into the open recess 321 of the fixed portion 32, and screwed into the fixed portion 32. Thus, the power supply device 1 is fixed to the bracket 61 via the case 3 (the cover 3C).
In the present embodiment, the power supply device 1 is disposed in a space between the vehicle body 60 and the bracket 61. The space is open in the Y direction, for example.
The case 3 of the power supply device 1 may have an opening in the bottom 341 of the case body 3B, and a plurality of fins (not shown) may be provided so as to protrude outward from the opening. In this case, heat of the electronic component 2 and the like in the power supply device 1 is dissipated using the fins.
The operation and effects of the power supply device 1 of the present embodiment will be described below.
In the power supply device 1 of the present embodiment, the fixed portion 32 has an opening recess 321 that opens on the outer surface 33 of the case 3, and protrudes from the inner surface 39 of the case 3 (the inner surface 39 of the cover 3C) toward the accommodating portion 31. Thus, the power supply device 1 of the present embodiment can prevent the fixed portion 32 from protruding outward from the outer surface 33 of the case 3. As a result, the power supply device 1 of the present embodiment can reduce the installation space of the power supply device 1 in the installed portion 61.
As a method of fixing the power supply device to the mounted portion of the vehicle body, for example, a method of providing a flange portion protruding outward from an outer surface of a case of the power supply device to the case and fastening and fixing the flange portion to the mounted portion with a screw is cited. That is, a method of providing a hole in a portion protruding outward from the outer surface of the housing in a direction perpendicular to the protruding direction, inserting a screw through the hole, and screwing the screw to the mounting portion is conceivable. However, in the case of this method, a portion (flange portion) protruding outward from the outer surface of the housing needs to be enlarged to some extent in order to be fixed to the mounting portion. As a result, the installation space of the power supply device increases.
In contrast, as shown in fig. 3 and 7, the power supply device 1 of the present embodiment is not provided with a portion projecting outward from the outer surface 33 of the housing 3 to be fixed to the attached portion 61. Therefore, the power supply device 1 of the present embodiment can prevent the installation space of the power supply device 1 from increasing due to the provision of the portion protruding from the case 3, and can achieve space saving.
Further, the structure in which the fixed portion 32 does not protrude outward from the outer surface 33 of the case 3 (the structure of the present embodiment) facilitates the operation of the power supply device 1 before installation. For example, according to the configuration of the present embodiment, the operation of the power supply apparatus 1 is facilitated when the power supply apparatus 1 is assembled to the attached portion 61, when the power supply apparatus 1 is transported or manufactured, or the like. In addition, the configuration of the present embodiment can also improve the appearance of the power supply device 1.
In the present embodiment, as shown in fig. 3 and 7, the fixed portion 32 as a part of the housing 3 protrudes from the inner surface 39 of the housing 3 toward the accommodating portion 31 (inside the housing 3). Thus, in the present embodiment, heat in the housing portion 31 (for example, heat generated from a semiconductor element mounted in the case 3 of the power supply device 1) can be radiated to the outside of the case 3 through the fixed portion 32. Therefore, the structure of the present embodiment can improve the heat dissipation performance of the power supply device 1.
In the present embodiment, as shown in fig. 2, the fixed portion 32 is disposed at a position overlapping with the region where the first noise filter circuit portion 12 (output filter portion) is disposed when viewed from the Z direction (opening direction). That is, in the present embodiment, the fixed portion 32 having conductivity is disposed in the vicinity of the first noise filter circuit portion 12. Therefore, the fixing portion 32 shields the noise radiated from the power conversion circuit portion 11. As a result, the configuration of the present embodiment can suppress the influence of the radiation noise of the power conversion circuit unit 11 on the first noise filter circuit unit 12 (output filter unit). That is, the configuration of the present embodiment can reduce noise of the power supply apparatus 1.
In the present embodiment, as shown in fig. 3, the first semiconductor element 21 and the second semiconductor element 22 are fixed to the case main body 3B (the second structure body 302) of the case 3. Therefore, in the present embodiment, an unused space (dead space) in which no component is disposed is formed in the housing portion 31 of the housing 3 on the side of the cover 3C (the first structure 301 side) where the fixed portion 32 is formed. Thus, the configuration of the present embodiment can improve the degree of freedom in the arrangement of the fixed portion 32 formed in the lid body 3C (first structure body 301). In the present embodiment, the fixed portion 32 is provided in a dead space inside the housing 3, and does not protrude from the outer surface 33 of the housing 3. As a result, the configuration of the present embodiment can easily realize downsizing of the power supply device 1.
In the present embodiment, as shown in fig. 7, the opening recess 321 of the fixed portion 32, which is open to the outer surface 33 of the lid body 3C (first structure 301), does not penetrate the accommodating portion 31. This improves the water tightness of the case 3. For example, in the case of a structure in which the opening recess 321 penetrates, water or the like may enter from the penetrating portion. In contrast, in the present embodiment, the opening recess 321 of the fixed portion 32 does not penetrate the accommodating portion 31. This can prevent water or the like from entering the fixed portion 32.
As shown in fig. 8, the power supply device 1 of the present embodiment is disposed between the mounted portion 61 (bracket) and the vehicle body 60, and is fixed to the mounted portion 61 so as to be separated from the vehicle body 60 (so as to form a space between the power supply device 1 and the vehicle body 60). Thus, the configuration of the present embodiment can protect the power supply device 1 from external impact and the like.
As described above, according to the configuration of the present embodiment, it is possible to provide a power supply device that can reduce the size of the installation space.
(second embodiment)
As shown in fig. 10, the present embodiment is an example of the configuration of the power supply apparatus 1 in which the fixed unit 32 is disposed at a position overlapping with a region between the region where the first noise filter circuit unit 12 (output filter unit) is disposed and the region where the power converter circuit unit 11 is disposed, when viewed from the Z direction.
In the present embodiment, two of the four fixed parts 32 are formed at positions overlapping with the region between the arrangement region of the output filter unit 12 and the arrangement region of the power conversion circuit unit 11 when viewed from the Z direction. The other two fixed portions 32 are formed at positions on the second noise filter circuit unit 13 (input filter unit) on the opposite side of the power conversion unit 11 when viewed from the Z direction.
The other structure is the same as that of the first embodiment.
The operation and effects of the power supply device 1 of the present embodiment will be described below.
In the power supply device 1 of the present embodiment, the fixed portion 32 having conductivity is disposed at a position overlapping with a region between the disposition region of the power conversion circuit portion 11 and the disposition region of the first noise filter circuit portion 12 (output filter portion). Thus, in the present embodiment, the fixed unit 32 can shield the noise radiated from the power conversion circuit unit 11. As a result, the configuration of the present embodiment can suppress the influence of the radiation noise of the power conversion circuit unit 11 on the first noise filter circuit unit 12 (output filter unit).
The present embodiment also has the same operational effects as the first embodiment. In addition, the same reference numerals as those used in the previous embodiments among the reference numerals used in the second and subsequent embodiments denote the same components and the like as those used in the previous embodiments, unless otherwise specified.
(third embodiment)
As shown in fig. 11 to 13, the present embodiment is an example of the structure of the power supply device 1 in which the partition wall 36 and the fixed portion 32 in the case 3 are integrated. In the present embodiment, the fixed portion 32 formed integrally with the partition wall 36 is provided between the power conversion circuit portion 11 and the first noise filter circuit portion 12 (output filter portion) when viewed from the Z direction. The fixed portion 32 is disposed at a position overlapping the disposition region of the first noise filter circuit portion 12. The partition wall 36 extends in the Z direction from the inner surface 39 of the lid body 3C of the case 3 toward the bottom 341 of the case 3. The partition wall 36 is provided to partition the space of the housing portion 31 in the X direction. The partition wall 36 does not completely partition the space of the housing 31. The extended setting end 361 of the partition wall 36 is separated from the bottom 341. As shown in fig. 13, the protruding amount E of the partition wall 36 from the inner surface 39 of the cover body 3C is smaller than the protruding amount a of the fixed portion 32 (E < a). However, the projecting amount E of the partition 36 may be equal to or greater than the projecting amount a of the fixed portion 32. Partition wall 36 extending from inner surface 39 of lid 3C has thermal conductivity and electrical conductivity.
In addition, as shown in fig. 11, the thickness F of the partition wall 36 in the X direction can be smaller than the width G of the fixed portion 32 in the X direction (F < G).
As shown in fig. 13, the partition wall 36 and the fixed portion 32 are integrally formed. For example, the partition wall 36 is provided so as to pass through the central axis Ax of the opening recess 321 of the fixed portion 32. In other words, the partition wall 36 can be provided to pass through the axis of the rotation shaft of the screw inserted into the opening recess 321.
As shown in fig. 12, the position in the Z direction of the extended end 361 of the partition wall 36 is located on the side closer to the inner surface 37 of the bottom 341 than the position of the end (height from the bottom 341) of the inductor 25 on the lid 3C side. That is, the extended end 361 is disposed at a position closer to the bottom 341 than the end of the inductor 25 on the lid 3C side. The position of the extended end 361 of the partition wall 36 in the Z direction is closer to the inner surface 37 of the bottom 341 than the positions of the ends of the transformer 23 and the choke coil 24 on the cover 3C side. That is, the extended end 361 is disposed closer to the bottom 341 than the end of the transformer 23 and the choke coil 24 on the cover 3C side.
The other is the same as the second embodiment.
The operation and effects of the power supply device 1 of the present embodiment will be described below.
The power supply device 1 of the present embodiment has a partition wall 36 between the power conversion circuit portion 11 and the first noise filter circuit portion 12 (output filter portion) when viewed from the Z direction. Thus, the power supply device 1 of the present embodiment can shield the radiation noise from the power conversion circuit unit 11 to the first noise filter circuit unit 12 (output filter unit).
Then, in the present embodiment, the fixed portion 32 is formed integrally with the partition wall 36. The fixed portion 32 formed integrally with the partition wall 36 is disposed at a position overlapping the disposition region of the first noise filter circuit portion 12. Thereby, the partition wall 36 shields the fixed portion 32 from noise integrally. As a result, the structure of the present embodiment can exhibit a noise shielding effect by the partition wall 36 and the fixed portion 32.
In the present embodiment, the fixed portion 32 is formed as a part of the partition wall 36. Thus, in the present embodiment, the arrangement space for the fixed portion 32 in the housing portion 31 can be easily secured. As a result, the configuration of the present embodiment can suppress an increase in size of the power supply device 1.
In the present embodiment, the fixed portion 32 and the partition wall 36, which are parts of the case 3, protrude from the inner surface 39 of the cover 3C toward the accommodating portion 31 (toward the inside of the case 3). Thus, the structure of the present embodiment can dissipate heat in the housing portion 31 to the outside of the case 3 through the fixed portion 32 and the partition wall 36. Therefore, the structure of the present embodiment can improve the heat dissipation performance of the power supply device 1.
The others have the same operational effects as the second embodiment.
(fourth embodiment)
As shown in fig. 14 and 15, the present embodiment is an example of the configuration of the power supply apparatus 1 in which the fixed unit 32 is disposed at a position overlapping with the disposition region of the power conversion circuit unit 11 when viewed from the Z direction.
In the present embodiment, two of the four fixed portions 32 are formed at positions overlapping with the arrangement region of the power conversion circuit portion 11 when viewed from the Z direction. The other two fixed portions 32 are formed at positions on the second noise filter circuit unit 13 (input filter unit) on the opposite side of the power conversion unit 11 when viewed from the Z direction.
As shown in fig. 15, the position of the fixed portion 32 in the Z direction, which closes the protruding end portion 322, is located closer to the inner surface 37 of the bottom portion 341 than the positions of the ends of the transformer 23 and the choke coil 24 on the cover 3C side (height from the bottom portion 341). That is, the closed protruding end 322 is disposed closer to the bottom 341 than the end of the transformer 23 and the choke coil 24 on the lid 3C side.
The other structure is the same as that of the first embodiment.
The operation and effects of the power supply device 1 of the present embodiment will be described below.
In the power supply device 1 of the present embodiment, the fixed portion 32 is disposed at a position overlapping with the disposition region of the power conversion circuit portion 11. Thus, in the present embodiment, the fixed portion 32 can be disposed at a position close to the first semiconductor element 21 and the second semiconductor element 22 which are likely to generate heat. Therefore, the structure of the present embodiment can efficiently dissipate heat from the first semiconductor element 21 and the second semiconductor element 22.
The others have the same operational effects as the first embodiment.
(fifth embodiment)
As shown in fig. 17, the present embodiment is an example of the configuration of the power supply device 1 in which the first semiconductor element 21 and the second semiconductor 22 of the electronic component 2 are mounted on the case body 3B of the case 3 where the fixed portion 32 is provided. In the present embodiment, the housing 3 includes a housing body 3B provided with the fixed portion 32, and a cover 3C forming the housing portion 31 together with the housing body 3B. The case body 3B has thermal conductivity.
In the present embodiment, the case main body 3B is the second structural body 302. The first structure 301 is a lid 3C that covers the opening surface of the case body 3B. That is, in the present embodiment, the fixed portion 32 is provided in the case body 3B. The fixed portion 32 is provided at the bottom 341 of the case main body 3B.
As shown in fig. 16, the fixed portions 32 are formed at four different positions when viewed from the Z direction. As shown in fig. 17, the fixed portion 32 has an opening recess 321 that opens outward from the outer surface 38 of the case body 3B in the Z direction. The opening recess 321 is provided to protrude from the inner surface 37 of the housing body 3B toward the accommodating portion 31 side in the Z direction.
As shown in fig. 16, in the present embodiment, two of the four fixed portions 32 are formed at positions overlapping with the arrangement region of the first noise filter circuit portion 12 (output filter portion) when viewed from the Z direction. The other two fixed portions 32 are formed at positions on the second noise filter circuit unit 13 (input filter unit) on the opposite side of the power conversion unit 11 when viewed from the Z direction.
As shown in fig. 17, the position of the fixed portion 32 in the Z direction at which the protruding end portion 322 is closed is located closer to the inner surface 37 of the bottom portion 341 than the position of the end portion of the inductor 25 on the cover 3C side (height from the bottom portion 341). That is, the closed protruding end portion 322 is disposed at a position closer to the bottom portion 341 than the end portion of the inductor 25 on the lid body 3C side.
The protruding seat face 323 protrudes in the Z direction from the outer surface 38 of the bottom 341 of the case body 3B.
The other is the same as the first embodiment.
The operation and effects of the power supply device 1 of the present embodiment will be described below.
In the power supply device 1 of the present embodiment, the first semiconductor element 21 and the second semiconductor element 22 are mounted on the case body 3B (the second structure 302) provided with the fixed portion 32. Therefore, in the present embodiment, the fixed portion 32 can be disposed at a position close to the first semiconductor element 21 and the second semiconductor element 22 which are likely to generate heat. Therefore, the structure of the present embodiment can efficiently dissipate heat from the first semiconductor element 21 and the second semiconductor element 22 via the fixed portion 32 having thermal conductivity.
The structures of the first, fourth, and fifth embodiments may be such that the partition wall 36 shown in the third embodiment is formed integrally with the fixed portion 32.
The technique of the present invention is not limited to the techniques described in the above embodiments. The technique of the present invention can be applied to various embodiments without departing from the idea of the present invention.
Claims (7)
1. A power supply device, which is mounted on a mounted portion, comprising:
an electronic component; and
a housing having a housing portion for housing the electronic component,
the housing has a fixed portion fixed to the mounted portion,
the fixed portion protrudes from the inner surface of the housing toward the receiving portion.
2. The power supply device according to claim 1,
the fixed portion has an open recess that is open at an outer surface of the housing, and a mount for fixing the mounted portion is inserted into the open recess.
3. The power supply device according to claim 2,
the accommodating part accommodates: a power conversion circuit unit; and a noise filter circuit unit that removes noise superimposed on the power input to the power conversion circuit unit and the power output from the power conversion circuit unit,
the fixed portion is disposed at a position overlapping with an arrangement region of the noise filter circuit portion, an arrangement region of the power conversion circuit portion, or a region between the arrangement region of the noise filter circuit portion and the arrangement region of the power conversion circuit portion when viewed from an opening direction of the opening recess,
the housing has electrical conductivity.
4. The power supply device according to any one of claims 1 to 3,
the housing has a first structure and a second structure forming the housing portion together with the first structure,
the first structure body is provided with the fixed part,
the second structure body is provided with a semiconductor element as the electronic component.
5. The power supply device according to any one of claims 1 to 3,
the housing has a first structure and a second structure forming the housing portion together with the first structure,
the second structure is provided with the fixed portion,
the second structure body is further provided with a semiconductor element as the electronic component, and has thermal conductivity.
6. The power supply device according to claim 2 or 3,
the opening recess of the fixed portion does not penetrate the housing portion.
7. The power supply device according to claim 2 or 3,
a partition wall protruding from the inner surface of the housing toward the receiving portion, the partition wall partitioning a space of the receiving portion,
the partition wall is provided between the power conversion circuit section and the noise filter circuit section and is disposed at a position overlapping with an arrangement region of the noise filter circuit section when viewed from an opening direction of the opening recess, the partition wall having thermal conductivity and electrical conductivity,
the fixed portion is formed as a part of the partition wall.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-232650 | 2018-12-12 | ||
| JP2018232650A JP7127518B2 (en) | 2018-12-12 | 2018-12-12 | power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111313656A true CN111313656A (en) | 2020-06-19 |
Family
ID=71086282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911265203.2A Pending CN111313656A (en) | 2018-12-12 | 2019-12-11 | Power supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7127518B2 (en) |
| CN (1) | CN111313656A (en) |
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| JP2018078247A (en) * | 2016-11-11 | 2018-05-17 | トヨタ自動車株式会社 | Capacitor module |
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| KR101255340B1 (en) | 2010-11-16 | 2013-04-16 | 도시바삼성스토리지테크놀러지코리아 주식회사 | Multimedia device |
| WO2015133201A1 (en) | 2014-03-03 | 2015-09-11 | 日立オートモティブシステムズ株式会社 | Power conversion device |
| JP6402580B2 (en) | 2014-10-17 | 2018-10-10 | 日産自動車株式会社 | Power supply |
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| Publication number | Publication date |
|---|---|
| JP7127518B2 (en) | 2022-08-30 |
| JP2020096443A (en) | 2020-06-18 |
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