WO2023277046A1 - キャパシタ - Google Patents
キャパシタ Download PDFInfo
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- WO2023277046A1 WO2023277046A1 PCT/JP2022/025878 JP2022025878W WO2023277046A1 WO 2023277046 A1 WO2023277046 A1 WO 2023277046A1 JP 2022025878 W JP2022025878 W JP 2022025878W WO 2023277046 A1 WO2023277046 A1 WO 2023277046A1
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- Prior art keywords
- capacitor
- groove
- direction control
- case
- control structure
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 134
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- 239000011347 resin Substances 0.000 claims description 55
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/12—Vents or other means allowing expansion
Definitions
- the present invention relates to capacitors such as electrolytic capacitors.
- Japanese Patent Application Laid-Open No. 10-149959 describes providing an electrolytic capacitor with improved heat dissipation and excellent ripple resistance.
- an electrolytic capacitor in which a capacitor element is housed in a case and the case is sealed by attaching a lid, the capacitor element is brought into contact with at least the bottom surface of the case, and at least either the inner bottom surface of the case or the back surface of the lid.
- an electrolytic capacitor is disclosed which is characterized by providing a projection which is covered with an elastic body and inserted into the winding core of the capacitor element.
- Japanese Patent Application Laid-Open No. 2015-177070 describes providing an electronic device that can be miniaturized, has good heat dissipation, and can ensure an appropriate life.
- the electronic device of this document includes a case, an aluminum electrolytic capacitor, a transformer, and a heat dissipation gel sheet.
- the case contains an aluminum electrolytic capacitor and a transformer.
- the heat dissipation gel sheet is arranged between the case and the aluminum electrolytic capacitor, and is arranged in contact with the case and the aluminum electrolytic capacitor.
- Japanese Patent Application Laid-Open No. 2017-168778 describes providing an electrolytic capacitor cooling structure and an electrolytic capacitor unit capable of improving heat dissipation.
- the electrolytic capacitor unit of this document includes a heat-dissipating resin having a first surface, and a plurality of electrolytic capacitors integrally provided with the heat-dissipating resin, having explosion-proof valves, and arranged with the explosion-proof valves facing the first surface.
- an electrolytic capacitor unit comprising: a capacitor; and a heat dissipating member comprising a second surface and attached so as to bring the second surface into thermal contact with the first surface, wherein the first surface and the second surface is provided with a ventilation path for venting all of the plurality of explosion-proof valves to the outside air, and the ventilation path connects at least one of the plurality of explosion-proof valves to the outside air via at least one other explosion-proof valve It has ventilation grooves for ventilation.
- Japanese Patent Application Laid-Open No. 2015-88504 describes delaying the operation of the pressure valve without increasing the operating pressure of the pressure valve.
- a groove-shaped pressure valve is formed on the bottom surface, and the bottom surface of the outer case that houses the capacitor element impregnated with the electrolytic solution is a region that does not overlap the pressure valve, and the outer case has a groove-shaped pressure valve. At least three recesses are formed in the area inside the outer edge of the bottom surface.
- a pressure valve explosion-proof valve
- the filled discharge resin may interfere with the operation of the pressure valve.
- One aspect of the present invention is a capacitor (capacitor) having a case containing a capacitor element and a pressure valve provided on the first surface of the case.
- the pressure valve includes a discharge direction control structure (portion, pattern) that opens obliquely with respect to the first surface by being deformed by an increase in the internal pressure of the case and at least partially broken.
- the pressure valve explosion-proof valve
- This discharge direction control structure opens obliquely with respect to the first surface when the pressure valve operates due to an increase in the internal pressure of the case, and directs the direction of the gas blown out from the pressure valve with respect to the first surface. Control is performed so that the air is not blown vertically (axially), but mainly obliquely, that is, along the first surface.
- the pressure valve of the present invention includes a structure (function) that controls the direction of blown gas along the first surface. For this reason, even if the first surface faces a structure having a heat dissipation function such as a heat sink and the space between them is filled or coated with a heat dissipating resin, the pressure valve can be placed in a predetermined direction along the first surface. gas is blown out to blow the heat-dissipating resin along the first surface. Therefore, even if the pressure valve is covered with the resin for heat dissipation, the operation of the pressure valve can be ensured.
- the first surface provided with the pressure valve such as the bottom surface of the case, can be used for heat dissipation (heat transfer) by connecting it to the heat dissipation plate via the heat dissipation resin without interfering with the operation of the pressure valve. . Therefore, it is possible to provide a capacitor that can be safely mounted in a state of high heat dissipation capability (heat dissipation performance) by actively using a structure having a heat dissipation function such as a heat sink. That is, it is possible to provide a capacitor that can be mounted so as to be in contact with a structure including a heat dissipation function through a heat dissipation resin.
- the ejection direction control structure may include linear structural elements that control the direction along the first face of the opening. Due to this discharge direction control structure, the gas is blown out intensively from the pressure valve in a predetermined direction. Therefore, the concentratedly ejected gas can more reliably remove the limited area of the heat-dissipating resin that is applied or filled during mounting, and a release route for the gas ejected from the pressure valve can be secured.
- the discharge direction control structure of the pressure valve may include a first structural element (first portion) and a second structural element (second portion) that have different pressure resistance strengths and intersect or contact each other.
- first structural element and the second structural element which have a lower compressive strength than other portions of the first face and have different respective compressive strengths, a controlled non-uniform structure can be introduced, some
- a structure that opens in a predetermined direction can be provided by deforming and partially breaking.
- These structural elements may be structures that can be introduced into the first surface, such as grooves, ridges, and steps.
- Structural element strength may be controlled by varying the length and/or shape, eg, depth, width, wall thickness, cross-sectional shape, and the like.
- the discharge direction control structure may include first and second grooves that differ in length and/or shape and intersect or touch each other.
- the second groove may be shallower than the first groove.
- the opening is formed by the first groove when actuated, and the direction in which the opening faces can be controlled by the second groove.
- the thickness t of the portion of the first surface of the case satisfies the following conditions (1) and (2) may be satisfied. 0 ⁇ d2/d1 ⁇ 1 (0) 0.3 ⁇ d1/t ⁇ 0.95 (1) 0.1 ⁇ d2/t ⁇ 0.85 (2)
- the total length of the first groove may be shorter than the total length of the second groove.
- the total length of the first groove may be longer than the total length of the second groove.
- the maximum length L of the straight portions of the first and second grooves and the diameter or diagonal length D of the first surface may satisfy the following condition (3). 0.1 ⁇ L/D ⁇ 0.95 (3)
- the lower limit of condition (3) may be 0.3, and the upper limit may be 0.7.
- the ejection direction control structure may include a plurality of third structural elements that have a smaller compressive strength than other portions of the first surface and intersect or contact each other in the peripheral portion of the first surface. In this discharge direction control structure, at least a part of the intersecting or contacting third structural element is broken to form an opening. Due to the difference in the strength of the portion, the opening is oriented obliquely with respect to the first surface, and the gas discharge direction can be controlled.
- the ejection direction control structure may include a plurality of fourth structural elements having a smaller pressure resistance than other portions of the first surface and contacting at an acute angle.
- At least a portion of the fourth structural element that contacts with an acute angle is broken to form an opening, and by setting the direction of contact with the acute angle, the gas discharge direction can be controlled.
- a plurality of fourth structural elements may be provided to form adjacent acute angles. When a plurality of fourth structural elements adjoin and form three or more acute angles, the angle at which the outermost structural elements of those fourth structural elements meet may be 180 degrees or less.
- the discharge direction control structure may include structural elements that are less pressure resistant than other portions of the first surface and are rotationally asymmetric with respect to the center of the first surface.
- the first surface of the capacitor may be provided with a mark indicating the ejection direction of the ejection direction control structure.
- This capacitor may have a filling area that is filled with a heat-dissipating resin when mounted.
- the filling area may include areas that include pressure valves.
- the capacitor may further have a convex structure protruding from the case to define the filling area.
- the convex structure may be intermittent, and in cooperation with the discharge direction control structure, the position where the convex structure is interrupted and the discharge control direction by the discharge direction control structure may match or approximate each other.
- Another aspect of the present invention includes the capacitor described above and a structure including a heat dissipation function, wherein the first surface of the case of the capacitor is arranged to face the wall surface of the structure, It is a device in which the filling area between the first surface and the wall surface is filled with a heat dissipating resin, for example, an electronic device or an electric device such as a power supply device, a charging device, or a converter.
- the capacitor has a case containing a capacitor element, and a pressure valve provided on the first surface of the case.
- the first surface includes a portion that opens obliquely to the first surface due to an increase in internal pressure, and the capacitor is arranged so that the first surface of the case and the wall surface of the structure including the heat dissipation function are opposed to each other. and the wall surface can be filled with resin for heat dissipation.
- FIG. 3(a) shows a state in which a capacitor is mounted
- FIG. 3(b) shows a state in which the capacitor is viewed from the bottom
- FIG. 4(a) shows a state in which a capacitor is mounted
- FIG. 4(b) is a diagram showing the mounted capacitor through a radiator plate.
- FIG. 5(a) shows a state in which the pressure valve operates with the capacitor mounted thereon
- FIG. 5(b) shows the state through the heat sink.
- FIGS. 6A to 6H are diagrams showing different examples of the ejection direction control structure.
- 7A to 7D are diagrams showing different examples of the ejection direction control structure.
- the perspective view which shows the outline of a different capacitor.
- FIG. 9(a) shows a state in which a capacitor of a different example is mounted
- FIG. 9(b) is a diagram showing the mounted capacitor through a radiator plate.
- FIG. 1 shows an example of a capacitor according to the present invention.
- This capacitor (capacitor, accumulator) 10 includes a case 20 housing a capacitor element 11 and a pressure valve 25 provided on an end surface (first surface) 21 of the case 20 .
- the pressure valve 25 includes a discharge direction control structure (discharge direction control mechanism, discharge direction control function, discharge direction control device, discharge direction control system) 24 including two types of grooves 26a and 26b with different depths.
- the ejection direction control structure 24 of this example is formed in a generally K-shaped groove (pattern) in which two shallow grooves 26b are in contact with a deep first groove 26a substantially in the center.
- the first grooves 26a and the second grooves 26b are respectively formed by first structural elements (first portions) 27a and second structural elements (first portions) 27a that cross or contact each other. second part) 27b.
- These structural elements 27a and 27b have lower pressure resistance than other portions of the end surface (first surface) 21, and have different pressure resistance. Therefore, the first structural element 27a and the second structural element 27b are deformed by an increase in the internal pressure of the case 20, and are partially broken to form an opening obliquely to the first surface 21.
- the difference in compressive strength between the first structural element 27a and the second structural element 27b can be provided by varying the length, shape, such as depth, width, wall thickness, cross-sectional shape, and the like.
- An example of the capacitor 10 is an electrolytic capacitor.
- An example of the capacitor element (capacitor element) 11 is one in which a separator made of electrolytic paper or the like is interposed between an anode foil and a cathode foil and wound.
- An example of the anode foil is an aluminum foil having an oxide film layer on both sides, and the anode foil and the cathode foil are each connected to a pair of terminals 12 via lead tabs.
- Capacitor element 11 impregnated with an electrolytic solution is housed in exterior case 20, and the opening is sealed by sealing member 15 with terminals 12 protruding.
- Capacitor 10 may be a solid electrolytic capacitor such as a conductive polymer aluminum solid electrolytic capacitor (conductive polymer capacitor) or an electric double layer capacitor.
- the capacitor 10 to which the present invention is applied may be any type of capacitor provided with a pressure valve 25 (capacitor).
- An example of the exterior case 20 is cylindrical with a bottom and made of metal such as aluminum.
- the capacitor 10 has a pressure valve (explosion-proof valve, safety valve) 25 provided on the outer surface of the central portion of the end surface (bottom surface, first surface) 21 of the case 20 .
- Capacitor 10 typically generates heat by current (ripple current, ripple current) that flows due to fluctuations in the load current to an IC in a power supply circuit or the like. Therefore, it is desirable to improve the heat dissipation capability (heat dissipation function) in order to provide the capacitor 10 that can handle high ripple current.
- the capacitor 10 collapses by releasing the gas or liquid inside the case 20 from the pressure valve 25 before the sealing body 15 is destroyed. It is important to prevent
- the capacitor 10 has the pressure valve 25 that operates when the internal pressure of the case 20 is lower than the deformation of the sealing member 15 .
- the valve actuation pressure of pressure valve 25 is set to 10 to 200 N/cm 2 .
- the grooves 26a and 26b which are structural elements, are deformed at a stage lower than the deformation of the sealing body 15, and a part of the grooves 26a and 26b is broken (destroyed) to generate cracks in the grooves 26a and/or 26b. It is provided so as to suppress an increase in the internal pressure of the case 20.
- a cylindrical case 20 typically has a diameter D of 10 to 40 mm and an axial length of 15 to 100 mm.
- the size of case 20 of capacitor 10 is not limited to these values.
- FIG. 2(a) schematically shows the cross-sectional structure of the discharge direction control structure 24 of the pressure valve 25.
- This capacitor 10 includes a pressure valve 25 including a discharge direction control structure 24 consisting of grooves 26a and 26b formed in a circular bottom surface (first surface) 21 of a case 20 by press working or the like.
- the width W of grooves 26a and 26b may range from 0.2 to 2 mm, or may range from 0.3 to 1 mm.
- the width W of grooves 26a and 26b may be the same or different.
- the depth d1 of one groove (first groove) 26a forming the ejection direction control structure 24 is greater than the depth d2 of the other groove (second groove) 26b. Therefore, the compressive strength of the first structural element (first portion) 27a including the first groove 26a is higher than the compressive strength of the second structural element (second portion) 27b including the second groove 26b. is also low.
- the discharge direction control structure 24 As shown in FIG. 2B, when the internal pressure of the case 20 of the capacitor 10 rises and reaches the design pressure of the pressure valve 25, the first groove 26a and the second groove 26b are opened. Deformed and partly broken. In this example, the first groove 26a is broken to form the opening 22, and the second groove 26b is deformed without being broken to control the direction in which the opening 22 opens. That is, in the pressure valve 25 , the discharge direction control structure 24 causes the opening 22 to open obliquely to the bottom surface 21 instead of opening vertically (axially) to the bottom surface 21 as the internal pressure of the case 20 rises.
- the pressure valve 25 when the pressure valve 25 is operated, the ejected matter 19 such as gas generated inside the case 20 is caused to flow through the opening 22 controlled by the discharge direction control structure 24 in an axis perpendicular to the bottom surface 21 . It blows out in the direction along the bottom surface 21 instead of the direction.
- the pressure valve 25 of the present invention includes a directional control structure 24 .
- the ejection direction control structure 24 of this example includes two types of structural elements 27a and 27b, one of which (the second structural element) 27b controls the opening direction of the opening 22 without breaking. Therefore, the first structural element 27a with low pressure resistance functions as the pressure valve 25, and the second structural element 27b with high pressure resistance is a structure for controlling the direction of the opening 22.
- the pressure valve 25 It is a dummy structural element.
- the second groove 26b of the K-shaped discharge direction control structure 24 is shallower than the first groove 26a, and is a dummy pattern that does not function as the pressure valve 25 to actually reduce the internal pressure of the case 20. is.
- the second grooves 26b of the dummy pattern control the orientation (opening direction) of the openings 22 formed by the first grooves 26a, and ejected substances (gases, vapors, fluids) that cause an increase in the internal pressure of the case 20. 19 to control the direction of emission.
- the second groove 26b is a linear structural element extending in the circumferential direction, and controls the opening 22 formed by the first groove 26a to face the bottom surface 21 in the circumferential direction (outside). Therefore, ejected material 19 is mainly (concentrated) ejected from opening 22 in a circumferential direction substantially orthogonal to first groove 26a.
- the depth d1 of the first groove 26a, the depth d2 of the second groove 26b, and the thickness t of the bottom surface (first surface) 21 of the case 20, which constitute the discharge direction control structure 24 of the pressure valve 25. may satisfy the following conditions (1) and (2) in addition to the condition (0) that the depth d1 is greater than the depth d2.
- 0.1 ⁇ d2/t ⁇ 0.85 (2)
- the lower limit of condition (1) may be 0.4, and the upper limit of condition (2) may be 0.3.
- the thickness t of the bottom surface 21 is 0.3 to 0.7 mm
- the depth d1 of the first groove 26a is 0.3 to 0.47 mm
- the depth d2 of the second groove 26b is 0.2. It may be ⁇ 0.4 mm.
- the residual thickness td1 of the portion (first structural element) 27a of the first groove 26a may be 0.02 to 0.1 mm, or may be 0.03 to 0.06 mm.
- the remaining thickness td2 of the second groove 26b portion (second structural element) 27b may be 0.05 to 0.15 mm, or may be 0.07 to 0.13 mm.
- the discharge direction control structure 24 may be configured by protrusions (protrusions) that are stamped from the inside of the case 20. It may be configured with a structure that accompanies thickness reduction (thickness reduction). In that case, even if the remaining thickness td1 of the first structural element 27a is smaller than the remaining thickness td2 of the second structural element 27b and the following conditions (0′) to (2′) are satisfied: good. 0 ⁇ td1/td2 ⁇ 1 (0') 0.05 ⁇ td1/t ⁇ 0.7 (1′) 0.15 ⁇ td2/t ⁇ 0.9 (2')
- the strength of the case 20 is lowered by providing the pressure valve 25 by making a part of the discharge direction control structure (groove) 24 constituting the pressure valve 25 a dummy pattern having a depth sufficient to satisfy the condition (2). can be suppressed. Therefore, the thickness of the case 20, particularly the thickness of the bottom surface 21, can be reduced, and the capacitor 10 that is lightweight and low in cost can be provided.
- FIG. 3 shows how a device including the capacitor 10, such as the power supply device 1, is assembled.
- the power supply device 1 may be a charging device, a converter, or an electronic or electric device including these.
- the power supply device 1 includes a structure having a heat dissipation function, such as an outer wall or a heat sink 5, a capacitor 10, and a circuit board 3 to which the capacitor 10 is attached.
- Capacitor 10 is arranged such that bottom surface (first surface) 21 of case 20 faces wall surface 5a of radiator plate 5, which is a structural body.
- the bottom surface 21 is provided with a pressure valve 25 including a discharge direction control structure 24 consisting of first grooves 26a and second grooves 26b.
- the ejection direction control structure 24 of this example has a substantially K-shaped pattern in which two shallow second grooves 26b are in contact with one first groove 26a.
- the total length (2 ⁇ M) of the second grooves 26b is longer than the total length L of the first grooves 26a (the total length L of the first grooves 26a is greater than the total length L of the second grooves 26a). shorter than the total length of groove 26b (2 ⁇ M)).
- the first groove 26a constitutes a first structural element 27a having a low pressure resistance, and serves as the opening 22 when the pressure valve operates.
- the second structural element 27b composed of the second groove 26b which is a dummy pattern, has relatively high pressure resistance, is easily deformed when the pressure valve is operated, and has a relatively large (long) distance.
- the orientation of the opening 22 can be controlled in a predetermined direction, for example, obliquely with respect to the bottom surface 21 and further in a predetermined direction (radial direction) around the bottom surface 21 (periphery).
- the second structural element 27b deformed by the second groove 26b forming the ejection direction control structure (pattern) 24 may be shorter than the first structural element 27a deformed or opened by the first groove 26a.
- a first groove 26a may be provided along the perimeter of the first surface 21, and a relatively wide opening 22 opens along the perimeter of the first surface 21, from which opening 22 the perimeter of the first surface 21 is provided.
- the gas 19 may be blown along.
- the total length of the first grooves 26a may be longer than the total length of the second grooves 26b.
- the maximum length of the straight portions of the first groove 26a and the second groove 26b, in this example, the length L of the first groove 26a, and the diameter or diagonal length D of the bottom surface (first surface) 21 may satisfy the following condition (3). 0.1 ⁇ L/D ⁇ 0.95 (3)
- the lower limit of condition (3) may be 0.3, and the upper limit may be 0.7.
- the pressure valve 25 is often provided on the bottom surface (end surface, first surface) 21 of the case 20, and when the length of the structural element (groove) of the discharge direction control structure 24 is approximately the same as the diameter D, the structural element may reach the boundary between the bottom surface 21 and the side surface or its vicinity, which may cause the strength of the case 20 to decrease.
- the diameter D of the bottom surface 21 may be 6-40 mm
- the length L of the first groove 26a may be 3-30 mm.
- FIG. 4 shows how a device including the capacitor 10, such as the power supply device 1, is assembled.
- Capacitor 10 has a filling area 28 filled with heat-dissipating resin 50 during mounting, and the filling area includes pressure valve 25 on first surface 21 .
- the heat sink 5 of the power supply 1 is arranged such that the wall surface 5a faces the bottom surface 21 of the capacitor 10, and includes the pressure valve 25 on the bottom surface 21 of the case 20.
- a heat radiating resin 50 is filled between the filling area 28 and the wall surface 5 a of the heat radiating plate 5 .
- the heat-radiating resin 50 include silicone-based resins, olefin-based resins, and synthetic rubbers.
- the breaking strength may be 3 MPa or less by the measurement method (JIS K 6251), the Young's modulus may be in the range of 0.2 to 8 MPa, and the range of 0.5 to 3 MPa.
- the resin may be soft, and may be, for example, a resin having a glass transition point Tg in the region of 0° C. or lower.
- the resin may have a glass transition point Tg of ⁇ 20° C. or lower, ⁇ 30° C. or lower, or ⁇ 40° C. or lower.
- the glass transition point Tg of silicone rubber is ⁇ 123° C.
- polyethylene is ⁇ 125° C.
- polyurethane is ⁇ 20° C.
- polyvinylidene fluoride is ⁇ 35° C., which are sufficiently soft at room temperature. be.
- This capacitor 10 can be mounted in a stable state by filling the space between the heat sink 5 and the bottom surface 21 of the case 20 with the heat sink resin 50 , and the heat sink 5 and the bottom surface 21 can be mounted via the heat sink resin 50 . can be connected (adhered) in a state in which heat can be transferred. Therefore, the radiator plate 5 and the case 20 can be mounted with good heat conduction, and the heat generated by the capacitor 10 can be efficiently released (dissipated) through the radiator plate 5 .
- FIG. 5 shows the state in which the pressure valve 25 is activated. 5A and 5B, when the pressure valve 25 operates, the opening direction of the opening 22 is controlled by the discharge direction control structure 24, and the bottom surface (first surface) 21 A spout 19 is blown out along. For this reason, the relatively weak, highly flexible, viscous, or non-plastic heat-dissipating resin 50 is exposed to the pressure of the gas or liquid (ejection) 19 discharged from the pressure valve 25, or is ejected. Together with the object 19 , it is ejected (spurted) out of the filling area 28 of the bottom surface 21 .
- the pressure valve 25 when the pressure valve 25 is operated, the cooperation of the first groove 26a and the second groove 26b of the discharge direction control structure 24 causes the opening 22 formed by the first groove 26a to move toward the bottom surface. 21 obliquely and open in the circumferential direction. Therefore, the ejected matter 19 is ejected in the circumferential direction of the bottom surface 21 along the bottom surface 21 . The ejected material 19 pushes (blows out) the heat-radiating resin 50 filled between the bottom surface 21 and the heat radiation plate 5 along the bottom surface 21 to the outside in the circumferential direction.
- the pressure valve 25 is not affected by the heat radiation resin 50 when the internal pressure of the case 20 rises due to heat generation or the like and reaches a predetermined pressure. work properly (as designed).
- the pressure valve 25 will partially reduce the strength of the case 20 of the capacitor 10 . For this reason, it is usually desirable to be provided in a structurally stable portion of the case 20 .
- the case 20 is a cylindrical aluminum case
- the bottom surface 21 of the case 20 is one suitable location (surface) for providing the pressure valve 25 .
- the filling area 28 can secure a contact area with the heat radiating plate 5 and be a stable shape, for example, a planar portion.
- the flat bottom surface 21 is most suitable as the surface for setting the filling area 28.
- the application of the resin 50 to the bottom surface 21 is applied to the pressure valve 25 and has not been performed due to the idea that the operation of the pressure valve 25 is hindered.
- the capacitor 10 of this example overturns the above-mentioned conventional idea, and enables the resin 50 applied on the pressure valve 25 to be blown off by the operation of the pressure valve 25. That is, by including the discharge direction control structure 24 in the pressure valve 25 provided on the bottom surface 21 of the capacitor 10, instead of opening in the vertical or axial direction to the bottom surface 21, the internal pressure of the case 20 rises and the opening is made in an oblique direction with respect to the bottom surface 21. the opening 22 to open. As a result, the heat releasing resin 50 is removed from above the pressure valve 25 by the operation of the pressure valve 25 .
- the capacitor 10 capable of operating the pressure valve 25 normally can be provided. Therefore, it is possible to provide the capacitor 10 which can be mounted so as to further promote heat dissipation through the bottom surface 21 provided with the pressure valve 25 and which also ensures safety.
- the heat radiation resin 50 applied to an arbitrary thickness between the heat radiation plate 5 on the pressure valve 25 of the capacitor 10 may have a thickness of 0.5 mm or more, 1 mm or more, or 4 mm or less.
- the heat dissipation resin 50 applied to an arbitrary thickness between the heat dissipation plate 5 on the pressure valve 25 of the capacitor 10 and the case 20 when the pressure valve 25 operates The material may be such that the rebound pressure after compression is 200 N/cm 2 or less when compressed by receiving a displacement of .
- the discharge direction control structure 24 of the pressure valve 25 only needs to be able to control the gas discharge direction in the horizontal direction, that is, in the direction along the bottom surface 21 .
- An example of the discharge direction control structure 24 has left-right symmetry with respect to only one of countless lines passing through the center of the disk-shaped bottom surface 21 of the capacitor case 20, and has left-right symmetry with respect to the other lines.
- a structure (pattern) that is bilaterally asymmetrical may be included.
- An example of the ejection direction control structure 24 may be symmetrical as a whole, but if it includes a plurality of types of grooves 26a and 26b with different pressure resistances, the pressure resistance distribution or arrangement may be asymmetrical.
- An example of the ejection direction control structure 24 may include a structural element that has a smaller pressure resistance than other portions of the first surface 21 and is rotationally asymmetric with respect to the center of the first surface 21 .
- the substantially K-shaped ejection direction control structure 24 described above is one example that satisfies the above conditions. In the following, further examples of different ejection direction control structures 24 will be described.
- the ejection direction control structure (pattern) 24 is shown in FIG.
- the ejection direction control structure (pattern) 24a shown in FIG. 6(a) has a first groove 26a serving as an opening 22 and a shallow second groove 26b serving as a dummy pattern. ) are combined to form a biased cross.
- the ejection direction control structure (pattern) 24b shown in FIG. 6(b) has a first groove 26a serving as the opening 22 and a second groove 26b serving as a dummy pattern. It is combined like a bow and arrow towards.
- the ejection direction control structure (pattern) 24c shown in FIG. 6(c) has a first groove 26a serving as the opening 22 and a second groove 26b serving as a dummy pattern.
- the ejection direction control structure (pattern) 24d shown in FIG. 6D has a first groove 26a that becomes the opening 22 and a second groove 26b that is a dummy pattern. It is combined like an anchor toward Each of the grooves 26a and 26b forming the discharge direction control structures 24a-24d may be straight, curved, or bent. These ejection direction control structures (patterns) 24a-24d have first grooves 26a and second grooves 26b with different strengths, which cross or contact each other, and the first grooves 26a are the second grooves. is controlled by the groove 26b to open outward in the circumferential direction and blow out the ejected matter 19 in the direction of the arrow 55. As shown in FIG. Therefore, the heat radiating resin 50 applied on the pressure valve 25 can be pushed out from the bottom surface 21 in the circumferential direction.
- This ejection direction control structure (pattern) 24 e has a plurality of grooves 26 a having a pressure resistance smaller than that of other portions of the bottom surface (first surface) 21 , and a plurality of grooves 26 a crossing or contacting each other at the periphery of the bottom surface 21 . 3 forming the structural element 27c.
- the strength is lowest at the portions where the plurality of grooves 26a intersect or contact each other.
- the portion where the plurality of grooves 26a of the discharge direction control structure 24e intersect or contact each other opens outward in the circumferential direction at an eccentric position on the bottom surface 21, similar to the pattern described above. Then, the jet 19 is ejected in the direction of the arrow 55 .
- the ejection direction control structure (pattern) 24f shown in FIG. 6F has two first grooves 26a and one dummy pattern second groove 26b. are arranged at equal intervals (equal angles) so that they intersect or touch each other.
- the ejection direction control structure (pattern) 24g shown in FIG. 6G has three first grooves 26a and one dummy pattern second groove 26b. are arranged to form a cross at equal intervals (equal angles) so that they intersect or touch each other.
- These ejection direction control structures 24f and 24g have a plurality of third structural elements 27c formed of two or three first grooves 26a that intersect or contact each other, and the intersecting or contacting portions are openings. .
- discharge direction control structures (patterns) 24f and 24g are configured such that the total length of the first grooves 26a is longer than the total length of the second grooves 26b, and the lengths of the first grooves 26a and the lengths of the second grooves 26b are equal to each other. This is an example of a structure that can control the direction in which the ejection substance 19 is ejected in the deflected direction by changing the direction.
- the discharge direction control structures (patterns) 24f and 24g have a shape that is rotationally symmetric as a whole with the center of the bottom surface 21 as the axis if the first groove 26a and the second groove 26b are common grooves. However, the first groove 26a and the dummy pattern second groove 26b have different depths and are not the same groove. Accordingly, each of the directing structures 24f and 24g is rotationally asymmetric. Discharge direction control structures 24 f and 24 g are provided at the center of bottom surface 21 away from the perimeter of bottom surface 21 . Therefore, the influence on the strength of the peripheral portion of the bottom surface 21 is small, and the deterioration of the strength of the case 20 can be easily suppressed.
- the ejection direction control structure (pattern) 24h shown in FIG. 6(h) is the same K-shaped pattern as the pattern shown in FIG. It's reversed.
- openings are formed by a plurality of first grooves 26a, and the direction thereof is controlled by second grooves 26b, which are dummy patterns. Therefore, it is possible to control the ejection substance 19 to be ejected in the direction of the arrow 55 .
- the blowing direction is difficult to identify at first glance, for example, in the capacitor 10 having the discharge direction control structures 24f, 24g and 24h, as shown in FIGS.
- the bottom surface (first surface) 21 may be provided with a mark 57 indicating the blowing direction.
- the shape of the mark 57 is not limited to the arrow in this example, and may be a triangle, a dot, or any other shape that indicates the direction.
- the capacitor 10 may be provided with a mark 57 indicating the blowing direction along with all the ejection direction control structures 24 .
- FIG. 7 shows some more different examples of the ejection direction control structure 24.
- FIG. The discharge direction control structure 24i shown in FIG. 7(a) has a pressure resistance smaller than that of other portions of the first surface 21, and is formed by a plurality of first grooves 26a that are opened when the internal pressure of the case 20 rises. and includes a plurality of fourth structural elements 27d that meet the acute angle 29; The angle ⁇ of the acute angle 29 may be less than 90° (90°) and may be less than 80°. A plurality of fourth structural elements 27d forming acute angles 29 form the starting points of the openings.
- a discharge direction control structure 24j shown in FIG. 7(c) includes three fourth structural elements 27d each constituted by three first grooves 26a that contact an acute angle 29. As shown in FIG. The angle ⁇ of the acute angle 29 formed by each fourth structural element 27d may be less than 50° and may be less than 45°.
- the four first grooves 26a forming the four fourth structural elements 27d are in contact with each other so as to form three acute angles 29.
- the number of first grooves 26a (fourth structural elements 27d) contacting to form acute angles 29 may be four or more, and the number of acute angles 29 formed by them adjacent to each other may be three or more. There may be.
- the fourth structural elements 27d are required to precisely control the ejection direction.
- the angle ⁇ at which the outermost structural element of (the first groove 26a) contacts may be 180 degrees or less.
- Figs. 8 and 9 show different examples of the capacitor 10.
- This capacitor 10 has a convex structure 30 formed along the outer circumference of the bottom surface 21 of a cylindrical case 20 . As shown in FIG. 8, this capacitor 10 is arranged such that the convex structure 30 on the bottom surface 21 of the case 20 is grounded to the wall surface 5a of the structure 5 including the heat dissipation function, and the space between the bottom surface 21 and the wall surface 5a is By filling the filling area 28 with the heat-dissipating resin 50, mounting can be performed with a high heat-dissipating capability.
- the projecting structure 30 may be formed by pressing a plurality of wall-shaped projections 33 so that a portion of the peripheral portion of the bottom surface 21 of the case 20 protrudes, or may be molded from resin.
- the resin for molding the protrusions 33 include epoxy resin, olefin resin, acrylic resin, polyimide resin, polyamide-imide resin, phenol resin, photosensitive resin, and thermosetting resin.
- a projecting structure (protruding structure) 30 rising from the bottom surface 21 has a plurality of wall structures (wall bodies) 33 that are intermittently erected at intervals 34 along the outer circumference of the bottom surface 21 of the case 20 .
- the capacitor 10 includes a pressure valve 25 including a K-shaped discharge direction control structure 24 on the bottom surface 21 , the convex structure 30 surrounds a region 28 including the pressure valve 25 on the bottom surface 21 , and the interior surrounded by the convex structure 30 may be defined as the filling area 28 of the heat-dissipating resin.
- one of the discontinuous positions (gap) 34 and the ejection control direction 55 by the ejection direction control structure 24 may match or approximate each other.
- the pressure valve 25 operates, the gas or liquid (jet) 19 is released from the pressure valve 25 in the direction 55 controlled by the discharge direction control structure 24, and the pressure or together with the jet 19 causes the heat-dissipating resin 50 to A portion of the gap 34 of the wall structure 33 is discharged or pushed outward as a spout 35 . Therefore, even if the pressure valve 25 is covered with the heat radiating resin 50, the pressure valve 25 can operate normally when the internal pressure of the case 20 rises due to heat generation or the like and reaches a predetermined pressure.
- the maximum amount of protrusion from the bottom surface (first surface) 21 of the convex structure 30 may be 0.1 to 4.0 mm. Since the filling area 28 is surrounded by the protruding structure 30, the heat radiation resin 50, which has relatively low strength and is highly flexible, viscous, or non-plastic, such as grease-like or gel-like silicone resin, can be used. It is possible to stably fill the space between the heat sink 5 and the bottom surface 21 of the case 20 . Therefore, it is possible to provide the capacitor 10 that can easily secure the adhesion between the heat sink 5 and the bottom surface 21 and can connect the heat sink 5 and the case 20 in a state of good heat conduction. Moreover, the capacitor 10 can be mounted in a state in which self-heating can be efficiently dissipated via the heat sink 5 .
- the capacitor 10 provided with the pressure valve 25 including the discharge direction control structure 24 of several different structures is exemplified in order to explain the present invention, but the structure of the capacitor 10 included in the present invention is as follows. is not limited to the above, but is as recited in the claims.
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Abstract
Description
0<d2/d1<1 ・・・(0)
0.3<d1/t<0.95・・・(1)
0.1<d2/t<0.85・・・(2)
0.1<L/D<0.95・・・(3)
第1の面がケースの端面の場合、その直径または対角線長よりも溝の長さを短くすることによりケース自体の強度を確保しやすい。条件(3)の下限は0.3であってもよく、上限は0.7であってもよい。
0<d2/d1<1 ・・・(0)
0.3<d1/t<0.95・・・(1)
0.1<d2/t<0.85・・・(2)
条件(1)の下限は0.4であってもよく、条件(2)の上限は0.3であってもよい。例えば、底面21の部分の厚みtは、0.3~0.7mm、第1の溝26aの深さd1は0.3~0.47mm、第2の溝26bの深さd2は0.2~0.4mmであってもよい。第1の溝26aの部分(第1の構造要素)27aの残存肉厚td1は0.02~0.1mmであってもよく、0.03~0.06mmであってもよい。また、第2の溝26bの部分(第2の構造要素)27bの残存肉厚td2は0.05~0.15mmであってもよく、0.07~0.13mmであってもよい。第1の溝26aの部分の残存肉厚td1と第2の溝26bの部分の残存肉厚td2との差は必要であるが小さくてもよい。
0<td1/td2<1 ・・・(0´)
0.05<td1/t<0.7・・・(1´)
0.15<td2/t<0.9・・・(2´)
0.1<L/D<0.95・・・(3)
条件(3)の下限は0.3であってもよく、上限は0.7であってもよい。圧力弁25は、ケース20の底面(端面、第1の面)21に設けられることが多く、吐出方向制御構造24の構造要素(溝)の長さが直径Dと同程度になると、構造要素が底面21と側面との境界部分あるいはその近傍に到達し、ケース20の強度が低下する要因となる可能性がある。例えば、底面21の直径Dは、6~40mm、第1の溝26aの長さLは、3~30mmであってもよい。
Claims (19)
- キャパシタ素子を収納したケースと、
前記ケースの第1の面に設けられた圧力弁とを有し、
前記圧力弁は、前記ケースの内圧上昇により変形し、少なくとも一部が破断することにより前記第1の面に対し斜め方向に開口する吐出方向制御構造を含む、キャパシタ。 - 請求項1において、
前記吐出方向制御構造は、前記開口の前記第1の面に沿った方向を制御する直線的な構造要素を含む、キャパシタ。 - 請求項1または2において、
前記吐出方向制御構造は、耐圧強度が異なり、相互に交差または接触する第1の構造要素および第2の構造要素を含む、キャパシタ。 - 請求項1または2において、
前記吐出方向制御構造は、長さおよび形状の少なくともいずれかが異なり、相互に交差または接触する第1の溝および第2の溝を含む、キャパシタ。 - 請求項4において、
前記第2の溝は、前記第1の溝に対して浅い、キャパシタ。 - 請求項5において、
前記第1の溝の深さd1と、前記第2の溝の深さd2と、前記ケースの前記第1の面の厚みtとが以下の条件を満たす、キャパシタ。
0.3<d1/t<0.95
0.1<d2/t<0.85 - 請求項5または6において、
前記第1の溝の全長が前記第2の溝の全長より短い、キャパシタ。 - 請求項5または6において、
前記第1の溝の全長が前記第2の溝の全長より長い、キャパシタ。 - 請求項5ないし8のいずれかにおいて、
前記第1の溝および前記第2の溝の直線部分の最大長さLと、前記第1の面の直径または対角線長Dとが以下の条件を満たす、キャパシタ。
0.1<L/D<0.95 - 請求項1または2において、
前記吐出方向制御構造は、前記第1の面の他の部分より耐圧強度が小さく、前記第1の面の周辺部で相互に交差または接触する複数の第3の構造要素を含む、キャパシタ。 - 請求項1または2において、
前記吐出方向制御構造は、前記第1の面の他の部分より耐圧強度が小さく、鋭角に接する複数の第4の構造要素を含む、キャパシタ。 - 請求項11において、
前記複数の第4の構造要素は少なくとも3つの鋭角を成すように接しており、それらの第4の構造要素の最も外側の構造要素が接する角度は180度以下である、キャパシタ。 - 請求項1または2において、
前記吐出方向制御構造は、前記第1の面の他の部分より耐圧強度が小さく、前記第1の面の中心に対して回転非対称な構造要素を含む、キャパシタ。 - 請求項1ないし13のいずれかにおいて、
前記第1の面に設けられた、前記吐出方向制御構造の吹き出し方向を示すマークを有する、キャパシタ。 - 請求項1ないし14のいずれかにおいて、
実装の際に放熱用樹脂を充填する充填用エリアを有し、前記充填用エリアは、前記圧力弁を含む、キャパシタ。 - 請求項15において、前記充填用エリアを規定するように前記ケースから突き出た凸構造をさらに有する、キャパシタ。
- 請求項16において、前記凸構造は断続的であり、前記凸構造が途切れた位置と前記吐出方向制御構造による吐出制御方向とが一致または近似している、キャパシタ。
- 請求項15ないし17のいずれかにおいて、
放熱機能を含む構造体と前記放熱用樹脂を介して接触するように実装される、キャパシタ。 - 請求項1ないし14のいずれかに記載のキャパシタと、放熱機能を含む構造体とを有し、
前記キャパシタの前記ケースの前記第1の面が前記構造体の壁面と対峙するように配置され、前記第1の面と前記壁面との間の充填用エリアに放熱用樹脂が充填された装置。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0410523A (ja) * | 1990-04-27 | 1992-01-14 | Matsushita Electric Ind Co Ltd | アルミ電解コンデンサ |
JPH07130587A (ja) * | 1993-10-29 | 1995-05-19 | Hitachi Aic Inc | コンデンサ用ケース |
JPH07153651A (ja) * | 1993-11-30 | 1995-06-16 | Hitachi Aic Inc | コンデンサ用ケース |
JP2017168778A (ja) * | 2016-03-18 | 2017-09-21 | パナソニックIpマネジメント株式会社 | 電解コンデンサの冷却構造および電解コンデンサユニット |
JP2021022569A (ja) * | 2015-10-02 | 2021-02-18 | アーコニック テクノロジーズ エルエルシーArconic Technologies Llc | エネルギー貯蔵装置 |
-
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- 2022-06-29 CN CN202280042150.1A patent/CN117480584A/zh active Pending
- 2022-06-29 JP JP2023532003A patent/JPWO2023277046A1/ja active Pending
- 2022-06-29 WO PCT/JP2022/025878 patent/WO2023277046A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0410523A (ja) * | 1990-04-27 | 1992-01-14 | Matsushita Electric Ind Co Ltd | アルミ電解コンデンサ |
JPH07130587A (ja) * | 1993-10-29 | 1995-05-19 | Hitachi Aic Inc | コンデンサ用ケース |
JPH07153651A (ja) * | 1993-11-30 | 1995-06-16 | Hitachi Aic Inc | コンデンサ用ケース |
JP2021022569A (ja) * | 2015-10-02 | 2021-02-18 | アーコニック テクノロジーズ エルエルシーArconic Technologies Llc | エネルギー貯蔵装置 |
JP2017168778A (ja) * | 2016-03-18 | 2017-09-21 | パナソニックIpマネジメント株式会社 | 電解コンデンサの冷却構造および電解コンデンサユニット |
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