WO2022163278A1 - コンデンサ - Google Patents
コンデンサ Download PDFInfo
- Publication number
- WO2022163278A1 WO2022163278A1 PCT/JP2021/048516 JP2021048516W WO2022163278A1 WO 2022163278 A1 WO2022163278 A1 WO 2022163278A1 JP 2021048516 W JP2021048516 W JP 2021048516W WO 2022163278 A1 WO2022163278 A1 WO 2022163278A1
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- WIPO (PCT)
- Prior art keywords
- capacitor
- plate
- bus bar
- heat transfer
- electrode terminal
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 168
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 239000011347 resin Substances 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims description 23
- 239000010408 film Substances 0.000 description 45
- 230000017525 heat dissipation Effects 0.000 description 14
- 239000011104 metalized film Substances 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
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- 238000010030 laminating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- -1 for example Polymers 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
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- 229920001187 thermosetting polymer Polymers 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
- H01G2/106—Fixing the capacitor in a housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
- H01G2/103—Sealings, e.g. for lead-in wires; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/236—Terminals leading through the housing, i.e. lead-through
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
Definitions
- the present invention relates to capacitors.
- the capacitor element generates heat when the capacitor is energized. In the capacitor configured as described above, heat is less likely to be released from the capacitor element because the capacitor element is embedded in the filling resin.
- the capacitor having the above configuration can be mounted in an inverter device for driving an electric motor.
- the capacitor element since a large amount of current tends to flow from the power supply device to the inverter device, a large amount of current tends to flow to the capacitor element, and heat generation of the capacitor element tends to increase.
- an object of the present invention is to provide a capacitor capable of enhancing heat dissipation from a capacitor element.
- a main aspect of the present invention relates to a capacitor.
- a capacitor according to this aspect includes a capacitor element, a first bus bar and a second bus bar respectively connected to first electrodes and second electrodes provided on both end surfaces of the capacitor element, one surface of which is open, and the capacitor element and a filling resin filled in the case.
- the first bus bar includes a first portion covering the capacitor element from the opening side in the filling resin
- the second bus bar overlaps the first portion from the opening side in the filling resin.
- Including a second part The capacitor further includes an exposed surface located closer to the opening than the second portion so as to overlap the first portion and exposed from the filling resin, and receives heat transferred to the second portion to expose the exposed surface. It has a heat transfer part that emits from the surface.
- FIG. 1(a) is a perspective view of the film capacitor according to the first embodiment
- FIG. 1(b) is a perspective view of the film capacitor not filled with a filling resin according to the first embodiment.
- FIG. 2 is an exploded perspective view of the film capacitor according to the first embodiment
- FIG. 3 is a perspective view of the capacitor element unit according to the first embodiment, viewed from the rear lower side.
- FIG. 4(a) is a perspective view of a first busbar according to the first embodiment
- FIG. 4(b) is a perspective view of a second busbar according to the first embodiment.
- FIG. 5(a) is a perspective view of a first insulating sheet according to the first embodiment
- FIG. 5(b) is a perspective view of a second insulating sheet.
- FIG. 6(a) is a perspective view of the heat transfer plate according to the first embodiment as seen from the front and below, and FIG. 6(b) is a front cross-sectional view of the heat transfer plate according to the first embodiment.
- FIG. 7(a) is a perspective view of a film capacitor according to the second embodiment
- FIG. 7(b) is a perspective view of a capacitor element unit according to the second embodiment.
- FIG. 8(a) is a perspective view of a first busbar according to the second embodiment
- FIG. 8(b) is a perspective view of a second busbar according to the second embodiment.
- FIG. 9 is a perspective view of a first insulating sheet according to a second embodiment;
- a film capacitor which is one embodiment of the capacitor of the present invention, will be described below with reference to the drawings.
- front-rear, left-right, and up-down directions are indicated in each figure as appropriate. It should be noted that the illustrated directions only indicate relative directions of the film capacitors, and do not indicate absolute directions. Also, for convenience of explanation, some configurations such as “bottom portion” and “front side portion” may be named according to the direction of illustration.
- FIG. 1(a) is a perspective view of the film capacitor 1A
- FIG. 1(b) is a perspective view of the film capacitor 1A in which the filling resin 600 is not filled.
- the film capacitor 1A includes four capacitor elements 100, a first bus bar 200, a second bus bar 300, a heat transfer plate 400, a case 500, a filling resin 600.
- Capacitor element unit 10 is configured by assembling four capacitor elements 100 , first bus bar 200 and second bus bar 300 so as to be integrated.
- Capacitor element unit 10 is accommodated in case 500 , and heat transfer plate 400 is installed on second bus bar 300 of capacitor element unit 10 with insulating sheet 700 interposed therebetween.
- a filling resin 600 is filled in the case 500 .
- Filling resin 600 is a thermosetting resin, such as an epoxy resin.
- the four capacitor elements 100 and part of the first busbar 200 and the second busbar 300 are covered with the hardened filling resin 600 and protected from moisture and impact by the case 500 and the filling resin 600. .
- the upper side of heat transfer plate 400 is exposed from filling resin 600 .
- FIG. 2 is an exploded perspective view of the film capacitor 1A.
- FIG. 3 is a perspective view of the capacitor element unit 10 as seen from the rear lower side.
- 4A is a perspective view of the first busbar 200
- FIG. 4B is a perspective view of the second busbar 300.
- FIG. 5(a) is a perspective view of the first insulating sheet 810
- FIG. 5(b) is a perspective view of the second insulating sheet 820.
- installation regions R1 and R2 of insulating sheet 700 and heat transfer plate 400 on second bus bar 300 of capacitor element unit 10 are indicated by dashed lines for convenience.
- capacitor element unit 10 includes four capacitor elements 100, a first bus bar 200, a second bus bar 300, a first insulating sheet 810 and a second insulating sheet 820. And prepare.
- the four capacitor elements 100 are formed by stacking two aluminum-deposited metallized films on a dielectric film, winding or laminating the stacked metallized films, and pressing them into a flat shape.
- Capacitor element 100 has a shape similar to a flattened cylinder.
- a first electrode 110 is formed on one end surface 101 of the capacitor element 100 by spraying a metal such as zinc, and a second electrode 120 is formed on the other end surface 102 by similarly spraying a metal such as zinc. be.
- capacitor element 100 of the present embodiment is formed of a metallized film in which aluminum is vapor-deposited on a dielectric film. It may be formed by a film. Alternatively, capacitor element 100 may be formed of a metallized film obtained by vapor-depositing a plurality of these metals, or may be formed of a metallized film obtained by vapor-depositing an alloy of these metals. .
- the four capacitor elements 100 have one end face 101, that is, the first electrode 110, facing upward, and the other end face 102, that is, the second electrode 120, facing downward. are arranged side by side in two rows in the left-right direction. First electrode 110 and second electrode 120 of four capacitor elements 100 are electrically connected to first bus bar 200 and second bus bar 300, respectively.
- the first bus bar 200 is formed into a predetermined shape by appropriately cutting, bending, or otherwise processing a plate-like conductive material such as a copper plate. , the second connection terminal portion 230 and the relay portion 240 are integrated. In this embodiment, the first bus bar 200 is a P-pole bus bar.
- the electrode terminal portion 210 has a rectangular plate shape and contacts the first electrodes 110 of the four capacitor elements 100 so as to cover the first electrodes 110 from above.
- a total of four pairs of connection pins 211 are formed on the front and rear sides of the left end portion and on the front and rear sides of the right end portion of the electrode terminal portion 210 .
- a pair of corresponding connection pins 211 are joined to each first electrode 110 by a joining method such as soldering.
- a circular flow hole 212 is formed in the electrode terminal portion 210 .
- a relay portion 240 relays between the electrode terminal portion 210 and the three first connection terminal portions 220 and second connection terminal portions 230 .
- the relay portion 240 extends upward from the rear end portion of the electrode terminal portion 210, and has a lower plate portion 241 having the same lateral width as the electrode terminal portion 210, and protrudes greatly to the left and right sides of the lower plate portion 241. It is composed of an upper plate portion 242 .
- the three first connection terminal portions 220 are provided at the upper end portion of the relay portion 240 so as to be arranged in the horizontal direction at equal intervals.
- the first connection terminal portion 220 has a hook shape that extends upward and then bends and extends rearward.
- a circular through hole 221 is formed in the first connection terminal portion 220 .
- a nut 222 is fitted in the through hole 221 .
- the second connection terminal portion 230 is provided at the right end of the upper end portion of the relay portion 240 .
- the second connection terminal portion 230 has a shape that extends slightly upward, then bends and extends long rearward.
- a circular through hole 231 is formed at the tip of the second connection terminal portion 230 .
- the second bus bar 300 is formed into a predetermined shape by appropriately cutting, bending, or otherwise processing a plate-like conductive material such as a copper plate, and includes two electrode terminal portions 310 and three first connection terminals. It has a configuration in which the portion 320, the second connection terminal portion 330, the overlapping portion 340, the two first relay portions 350, and the second relay portion 360 are integrated.
- the second busbar 300 is an N-pole busbar.
- the left electrode terminal portion 310 has a rectangular plate shape with the front and rear corners on the left side cut obliquely, and the second electrodes 120 are connected to the second electrodes 120 of the two capacitor elements 100 in the left column. Contact from below so as to cover.
- the right electrode terminal portion 310 has a rectangular plate shape with the front and rear corners on the right side cut obliquely, and the second electrodes 120 are connected to the second electrodes 120 of the two capacitor elements 100 in the right column. Contact from below so as to cover.
- a pair of connection pins 311 are formed on the front and rear sides of the right end portion of the electrode terminal portion 310 on the left side.
- a pair of connection pins 311 are formed on the front and rear sides of the left end portion of the right electrode terminal portion 310 .
- a pair of corresponding connection pins 311 of the electrode terminal portion 310 on the left side is joined to each of the second electrodes 120 of the two capacitor elements 100 in the left column by a joining method such as soldering.
- a pair of corresponding connection pins 311 of the electrode terminal portion 310 on the right side is joined to each of the second electrodes 120 of the two capacitor elements 100 in the right column by a joining method such as soldering.
- the overlapping portion 340 has a rectangular plate shape and overlaps the electrode terminal portion 210 of the first bus bar 200 from above.
- Two first relay portions 350 relay between the two electrode terminal portions 310 and the overlapping portion 340 .
- the left first relay portion 350 extends from the left electrode terminal portion 310 so as to pass through the outside (left side) of the row of the left capacitor elements 100 and is connected to the left end portion of the overlapping portion 340 .
- the first relay portion 350 on the right side extends from the electrode terminal portion 310 on the right side so as to pass through the outside (right side) of the row of the capacitor elements 100 on the right side and is connected to the right end portion of the overlapping portion 340 .
- a circular communication hole 351 is formed in the two first relay portions 350 along the peripheral surface 103 of the capacitor element 100 .
- a second relay portion 360 relays between the overlapping portion 340 and the three first connection terminal portions 320 and the second connection terminal portions 330 .
- the second relay portion 360 extends upward from the rear end portion of the overlapped portion 340, and has a lower plate portion 361 having the same left and right width as the overlapped portion 340, and protrudes farther to the left and right than the lower plate portion 361. It is composed of an upper plate portion 362 .
- the second relay portion 360 overlaps the relay portion 240 of the first busbar 200 from the front.
- the three first connection terminal portions 320 are provided at the upper end portion of the second relay portion 360 so as to be arranged in the horizontal direction at equal intervals. Each first connection terminal portion 320 is arranged to the left of each first connection terminal portion 220 of the first bus bar 200 .
- the first connection terminal portion 320 has a hook shape that extends upward and then bends and extends rearward.
- a circular through hole 321 is formed in the first connection terminal portion 320 .
- a nut 322 is fitted in the through hole 321 .
- the second connection terminal portion 330 is provided at the right end of the upper end portion of the second relay portion 360 and is arranged to the right of the second connection terminal portion 230 of the first bus bar 200 .
- the second connection terminal portion 330 has a shape that extends slightly upward, then bends and extends long rearward.
- a circular through hole 331 is formed at the tip of the second connection terminal portion 330 .
- the first insulating sheet 810 and the second insulating sheet 820 are sandwiched between the first busbar 200 and the second busbar 300 .
- the first insulating sheet 810 and the second insulating sheet 820 are made of insulating paper or an insulating resin material such as acrylic or silicon.
- the first insulating sheet 810 includes a first insulating portion 811, two second insulating portions 812 and a second insulating portion 811 each having a shape corresponding to the overlapping portion 340, the two first relay portions 350 and the second relay portion 360 of the second bus bar 300, respectively. 3 insulation 813 is included.
- the third insulating portion 813 covers both surfaces of the second relay portion 360 .
- a circular flow hole 814 overlapping the flow hole 212 of the electrode terminal portion 210 of the first bus bar 200 is formed in the first insulating portion 811 .
- a semicircular notch 815 is formed in the two second insulating portions 812 so as to overlap with the communication hole 351 of the first relay portion 350 .
- the second insulating sheet 820 has a shape corresponding to the relay portion 240 of the first busbar 200 and covers both surfaces of the relay portion 240 .
- a first insulating portion 811 is interposed between the electrode terminal portion 210 of the first bus bar 200 and the overlapping portion 340 of the second bus bar 300 . This ensures insulation between the electrode terminal portion 210 and the overlapping portion 340 .
- the overlapping portion 340 is adjacent to the electrode terminal portion 210 via the first insulating portion 811 . As a result, heat is easily transferred from the electrode terminal portion 210 to the overlapping portion 340 .
- it is desirable that both the electrode terminal portion 210 and the overlapping portion 340 are in contact with the first insulating portion 811 there is a slight gap between at least one of the electrode terminal portion 210 and the overlapping portion 340 and the first insulating portion 811 . There may be gaps in
- Two second insulating parts 812 are interposed between the first electrodes 110 of the four capacitor elements 100 and the two first relay parts 350 of the second bus bar 300 . This ensures insulation between the first electrodes 110 of the four capacitor elements 100 and the two first relay portions 350 .
- a third insulating portion 813 and a second insulating sheet 820 are interposed between the relay portion 240 of the first busbar 200 and the second relay portion 360 of the second busbar 300 . This ensures insulation between the relay portion 240 and the second relay portion 360 .
- first insulating sheet 810 a highly thermally conductive insulating material may be used for the first insulating sheet 810 .
- the thermal conductivity of first insulating sheet 810 is set to approximately 3.0 to 3.5 W/m ⁇ K. This thermal conductivity is higher than that of the filling resin 600 .
- capacitor element unit 10 electrode terminal portion 210 and relay portion 240 of first bus bar 200 overlap overlapping portion 340 and second relay portion 360 of second bus bar 300 , thereby increasing the ESL (equivalent series inductance) in capacitor element unit 10 . ) is expected to be reduced.
- FIG. 6(a) is a perspective view of the heat transfer plate 400 viewed from the lower front
- FIG. 6(b) is a front cross-sectional view of the heat transfer plate 400.
- heat transfer plate 400 is formed separately from second bus bar 300 using a metal material such as aluminum. and a plate-like portion 420 .
- the first plate-like portion 410 has a rectangular plate-like shape.
- the upper surface of the first plate-shaped portion 410 serves as an exposed surface 401 exposed from the filling resin 600 .
- the exposed surface 401 is a flat surface.
- Three circular through-holes 411 are formed on the left side and the right side of the first plate-shaped portion 410 .
- Each through-hole 411 has an upper end 411a chamfered, and a lower portion 411b has a tapered shape in which the hole diameter gradually increases from the lower surface side to the upper surface side of the first plate-shaped portion 410.
- the first plate-shaped portion 410 is formed with square recesses 412 at the left end and the right end.
- the first plate-shaped portion 410 is larger in size than the second plate-shaped portion 420 .
- the second plate-shaped part 420 has a rectangular shape and is integrally formed with the first plate-shaped part 410 so as to protrude from the central portion of the lower surface of the first plate-shaped part 410 .
- the lower surface of the second plate-like portion 420 forms a facing surface 402 that faces the exposed surface 401 and faces the surface (upper surface) of the overlapping portion 340 of the second bus bar 300 .
- the insulating sheet 700 is a sheet-like insulating member, has a rectangular shape, and is made of insulating paper or an insulating resin material such as acrylic or silicone.
- the insulating sheet 700 has a larger size than the second plate-shaped portion 420 of the heat transfer plate 400 .
- the thermal conductivity of the insulating sheet 700 is about 3.0 to 3.5 W/m ⁇ K.
- case 500 is made of resin, for example, polyphenylene sulfide (PPS), which is a thermoplastic resin.
- PPS polyphenylene sulfide
- the case 500 is formed in a substantially rectangular parallelepiped box shape, and has a bottom portion 501, a front side portion 502, a rear side portion 503, a left side portion 504, and a right side portion 505 rising from the bottom portion 501, and an opening 506 on the top surface. have.
- PPS polyphenylene sulfide
- the case 500 is provided with first attachment tabs 510 at the corners between the front side portion 502 and the left side portion 504 and the corners between the front side portion 502 and the right side portion 505 .
- a circular mounting hole 511 is formed in the first mounting tab 510 .
- the case 500 is also provided with second mounting tabs 520 on the front and rear sides of the left side portion 504 and on the front and rear sides of the right side portion 505 .
- a circular mounting hole 521 is formed in the second mounting tab 520 .
- a metal collar 522 is fitted into the mounting hole 521 for reinforcement of the hole.
- the portions of the left side surface portion 504 and the right side surface portion 505 where the rear second mounting tabs 520 are provided protrude inward in a shape corresponding to the recessed portion 412 of the heat transfer plate 400 to constitute the protruding portion 530 .
- the capacitor element unit 10 When the film capacitor 1A is assembled, the capacitor element unit 10 is accommodated in the case 500 as shown in FIG. 1(b).
- the four capacitor elements 100 have the first electrodes 110 facing the opening 506 side and the second electrodes 120 facing the bottom portion 501 side.
- the electrode terminal portion 210 of the first bus bar 200 covers the first electrodes 110 from the opening 506 side, and the overlapping portion 340 of the second bus bar 300 overlaps the electrode terminal portion 210 from the opening 506 side.
- An insulating sheet 700 is installed on the overlapping portion 340 (installation area R1 in FIG. 2), and a heat transfer plate 400 is installed thereon (installation area R2 in FIG. 2).
- the heat transfer plate 400 is positioned closer to the opening 506 than the overlapping portion 340 in the case 500 so as to overlap the electrode terminal portion 210 .
- the lower surface of the second plate-shaped portion 420 of the heat transfer plate 400 contacts the insulating sheet 700 and closely faces the upper surface of the overlapping portion 340 as the facing surface 402 .
- the insulating sheet 700 provides insulation between the heat transfer plate 400 and the overlapping portion 340 .
- the concave portion 412 of the heat transfer plate 400 is fitted into the projecting portion 530 of the case 500 , and the heat transfer plate 400 is positioned in the front, rear, left, and right directions with respect to the case 500 .
- the upper surface of the heat transfer plate 400 slightly protrudes upward from the case 500 .
- a filling resin 600 in a liquid state is injected into the case 500 .
- filling resin 600 passes through circulation hole 212 of first bus bar 200 and two circulation holes 351 of second bus bar 300 , thereby facilitating spreading over four capacitor elements 100 .
- the case 500 is filled with the filling resin 600 to the vicinity of the opening 506, the injection of the filling resin 600 is completed.
- the case 500 is heated and the filling resin 600 inside the case 500 is cured.
- the film capacitor 1A is completed as shown in FIG. 1(a).
- the three first connection terminal portions 220 and the second connection terminal portions 230 of the first bus bar 200 and the three first connection terminal portions 320 and the second connection terminal portions 330 of the second bus bar 300 are It is exposed from the filling resin 600 and positioned behind the case 500 .
- a portion of the heat transfer plate 400 that is, the upper side of the first plate-like portion 410 is exposed from the filling resin 600 , and the upper surface of the first plate-like portion 410 is exposed from the filling resin 600 as an exposed surface 401 .
- the six through-holes 411 of the heat transfer plate 400 are filled halfway with the filling resin 600 . Since the through holes 411 are tapered, the filling resin 600 in the through holes 411 produces an anchor effect, making it difficult for the heat transfer plate 400 to come off upward.
- the film capacitor 1A can be mounted, for example, in an inverter device for driving an electric motor in an electric vehicle.
- DC power is supplied to the inverter device from a power supply device (battery).
- the inverter device has an inverter circuit including an IGBT (Insulated Gate Bipolar Transistor), converts DC power into three-phase AC power, and supplies it to an electric motor.
- IGBT Insulated Gate Bipolar Transistor
- Through-holes 231 and 331 are used for the second connection terminal portion 230 of the first bus bar 200 and the second connection terminal portion 330 of the second bus bar 300, respectively. connected by screws. Also, the three first connection terminal portions 220 of the first bus bar 200 and the three first connection terminal portions 320 of the second bus bar 300 are provided with external terminals (not shown) connected to an inverter circuit, respectively. They are connected by screwing using nuts 222 and 322 .
- the cooling member 2 is attached to the exposed surface 401 of the heat transfer plate 400 as indicated by the dashed line in FIG. 1(a) in order to enhance the heat radiation effect.
- the cooling member 2 is for forcibly cooling the heat transfer plate 400 from the outside. be done.
- the cooling member 2 may be a cooler using a Peltier element. Since the heat transfer plate 400 and the second bus bar 300 are insulated by the insulating sheet 700, the cooling member 2 is in direct contact with the exposed surface 401, which is the mounting surface.
- the inverter device When the inverter device operates and the film capacitor 1A is energized, the four capacitor elements 100 generate heat.
- the heat generated from the four capacitor elements 100 is transmitted to the electrode terminal portions 210 of the first busbar 200, the two electrode terminal portions 310 of the second busbar 300, and the two first relay portions 350.
- Heat transfer plate 400 is cooled by cooling member 2 . Therefore, the heat transmitted to the two electrode terminal portions 310 and the two first relay portions 350 moves to the overlapped portion 340 and is transmitted to the facing surface 402 of the heat transfer plate 400, causing the heat transfer plate 400 to spread in its thickness direction. , reaches the exposed surface 401 and is discharged from the exposed surface 401 to the cooling member 2 .
- the overlapped portion 340 overlaps the electrode terminal portion 210 so as to be close to it. Therefore, the heat transmitted to the electrode terminal portion 210 also moves to the overlapping portion 340 , moves to the exposed surface 401 of the heat transfer plate 400 , and is released from the exposed surface 401 to the cooling member 2 .
- the heat transfer path to the exposed surface 401 has a short distance and a large cross-sectional area. As a result, the thermal resistance of the moving path is reduced, so that heat is transferred well from the overlapped portion 340 to the exposed surface 401 . Therefore, heat dissipation from the overlapping portion 340 is improved. Furthermore, since the first plate-shaped portion 410 of the heat transfer plate 400 is larger in size than the second plate-shaped portion 420, the area of the exposed surface 401, which is a heat dissipation surface, is increased, and the heat dissipation effect to the cooling member 2 is enhanced. .
- the heat transmitted to the left electrode terminal portion 310 is transmitted to the overlapping portion 340 through the left first relay portion 350, and the heat transmitted to the right electrode terminal portion 310 is transmitted through the right first relay portion 350. It is transmitted to the overlapping section 340 through the That is, the heat received by the electrode terminal portions 310 on both sides is transmitted to the overlapped portion 340 in a short distance, so that the heat dissipation from the electrode terminal portions 310 on both sides is improved.
- the heat is radiated from the four capacitor elements 100 to the outside through the first bus bar 200, the second bus bar 300, and the heat transfer plate 400, so that the capacitor elements 100 are less likely to become hot when the current is supplied. .
- the film capacitor 1A includes a capacitor element 100, a first bus bar 200 and a second bus bar 300 respectively connected to a first electrode 110 and a second electrode 120 provided on both end surfaces 101 and 102 of the capacitor element 100, and one surface ( It has a case 500 with an open top surface) in which the capacitor element 100 is accommodated, and a filling resin 600 filled in the case 500 .
- First bus bar 200 includes a first portion (electrode terminal portion 210 ) that covers capacitor element 100 from opening 506 side in filling resin 600
- second bus bar 300 has a first portion from opening 506 side in filling resin 600 . It includes a second portion (overlapping portion 340) that overlaps the .
- the film capacitor 1A further includes an exposed surface 401 which is positioned closer to the opening 506 than the second portion so as to overlap the first portion and which is exposed from the filling resin 600.
- the exposed surface 401 receives the heat transmitted to the second portion.
- a heat transfer portion (heat transfer plate 400 ) is provided to emit heat from 401 .
- the heat transferred from capacitor element 100 to second bus bar 300 can be effectively released to the outside through the heat transfer section.
- the heat transferred to 1 bus bar 200 can be effectively released to the outside through the second portion (overlapping portion 340) and the heat transfer portion. Therefore, heat dissipation from capacitor element 100 through first bus bar 200 and second bus bar 300 can be enhanced, and capacitor element 100 can be prevented from becoming hot when energized.
- the heat transfer portion (heat transfer plate 400) is a plate-like member formed separately from the second bus bar 300, and the exposed surface 401 faces back to the second portion (overlapping portion 340). It is configured to include a facing surface 402 that faces the surface of the .
- the heat transferred to the second portion moves in the thickness direction of the heat transfer portion (heat transfer plate 400), so the heat transfer path to the exposed surface 401 is short. , the cross-sectional area becomes large. As a result, the heat resistance of the moving path is reduced, so that heat is transferred well from the second portion to the exposed surface 401 . Therefore, heat dissipation from capacitor element 100 through first bus bar 200 and second bus bar 300 can be further enhanced.
- the heat transfer portion (heat transfer plate 400) includes a first plate-like portion 410 having an exposed surface 401 and a second plate-like portion 410 integrally formed with the first plate-like portion 410 and having a facing surface 402.
- the first plate-like portion 410 is larger in size than the second plate-like portion 420 .
- the area of the exposed surface 401 which is a heat dissipation surface, can be increased, and the heat dissipation from the exposed surface 401 can be enhanced.
- the capacitor element 100 is arranged in the case 500 so that the first electrode 110 faces the opening 506 side and the second electrode 120 faces the bottom surface portion 501 side, and the first bus bar 200
- a second bus bar 300 covers the second electrode 120 and a second electrode terminal portion (electrode terminal portion 310) connected to 120; and a third portion (first relay portion 350) extending from the second electrode terminal portion and connected to the second portion (overlapping portion 340). It is configured like this.
- the heat transmitted from the capacitor element 100 to the second electrode terminal portion (electrode terminal portion 310) and the third portion (first relay portion 350) is transferred to the second portion (overlapping portion 340) and the heat transfer portion (
- the heat transferred from the capacitor element 100 to the first electrode terminal portion (electrode terminal portion 210) can be effectively released to the outside through the heat transfer plate 400), and the heat transferred from the capacitor element 100 to the first electrode terminal portion (electrode terminal portion 210) can be transferred to the second portion (overlapping portion 340) and the heat transfer portion (heat transfer plate 400) can be well discharged to the outside.
- the film capacitor 1A has a case 500 in which a plurality (four) of capacitor elements 100 are arranged in two rows, and the second bus bar 300 is arranged to accommodate the plurality (two) of the capacitor elements 100 in each row.
- two second electrode terminal portions (electrode terminal portions 310) each connected to the second electrode 120 of the second electrode terminal portion (electrode terminal portion 310) extending from each second electrode terminal portion so as to pass through the outside of each column and extending from the opposite side to the second electrode terminal portion (electrode terminal portion 310). It is configured to include two third portions (first relay portion 350) connected to the portion (overlapping portion 340).
- the heat received by the two second electrode terminal portions is transmitted to the second portion (overlapping portion 340) in a short distance, so that the heat dissipation from the two second electrode terminal portions gets better.
- the film capacitor 1A is configured such that the cooling member 2 for cooling the heat transfer portion (heat transfer plate 400) is attached to the exposed surface 401.
- the heat transfer section (heat transfer plate 400) can be sufficiently cooled, and the heat dissipation from the first bus bar 200 and the second bus bar 300 through the heat transfer section can be sufficiently enhanced.
- FIG. 7(a) is a perspective view of the film capacitor 1B
- FIG. 7(b) is a perspective view of the capacitor element unit 10.
- FIG. FIG. 8(a) is a perspective view of the first busbar 200a
- FIG. 8(b) is a perspective view of the second busbar 300a.
- FIG. 9 is a perspective view of the first insulating sheet 810a.
- a heat transfer section (heat transfer plate 400) separate from the second bus bar 300 is provided.
- the heat transfer portions (the first heat transfer portion 370 and the two second heat transfer portions 380 ) are integrally formed with the second bus bar 300 .
- the capacitor element unit 10 includes a first bus bar 200a, a second bus bar 300a and a first insulating sheet having different configurations from the first bus bar 200, the second bus bar 300 and the first insulating sheet 810 of the first embodiment. 810a without the second insulating sheet.
- the first bus bar 200a is made of a conductive material and has a configuration in which an electrode terminal portion 210a, three first connection terminal portions 220a, a second connection terminal portion 230a, and a relay portion 240a are integrated.
- the first bus bar 200a has the same structure as the first bus bar of the first embodiment, except that the electrode terminal portion 210a is longer in the front-rear direction than the electrode terminal portion 210 of the first embodiment and has a notch 213 at the front end. It has a shape similar to 200.
- Four pairs of connection pins 211a and communication holes 212a are formed in the electrode terminal portion 210a.
- Through holes 221a are formed in the three first connection terminal portions 220a, and nuts 222a are attached to the through holes 221a.
- a through hole 231a is formed in the second connection terminal portion 230a.
- the second bus bar 300a is made of a conductive material and includes two electrode terminal portions 310a, three first connection terminal portions 320a, a second connection terminal portion 330a, an overlapping portion 340a, and two first relay portions. 350a, the second relay portion 360a, the first heat transfer portion 370, and the two second heat transfer portions 380 are integrated.
- the two electrode terminal portions 310a have a rectangular plate shape longer in the front-rear direction than the two electrode terminal portions 310 of the first embodiment.
- a pair of connection pins 311a are formed on the front and rear sides of the right end of the left electrode terminal portion 310a, and a projecting piece 312 extending upward is formed on the rear end of the left end.
- a pair of connection pins 311a are formed on the front and rear sides of the left end of the right electrode terminal portion 310a, and a projecting piece 312 extending upward is formed on the rear end of the right end.
- the overlapped portion 340a includes a first overlapped portion 341 having the same shape as the overlapped portion 340 of the first embodiment, and a rectangular plate-shaped first overlapped portion 341 provided in front of the first overlapped portion 341 with the first heat transfer portion 370 interposed therebetween. and a double overlap portion 342 .
- the second overlapping portion 342 overlaps the front portion of the electrode terminal portion 210a of the first bus bar 200a from above.
- a circular flow hole 343 is formed in the front portion of the first overlapping portion 341 to flow the filling resin 600 in a liquid state.
- the three first connection terminal portions 320a, the second connection terminal portions 330a, the two first relay portions 350a and the second relay portions 360a are the same as the three first connection terminal portions 320 and the second connection terminals of the first embodiment. It has the same shape as the portion 330 , the two first relay portions 350 and the second relay portion 360 .
- Communication holes 351a are formed in the two first relay portions 350a.
- Through holes 321a are formed in the three first connection terminal portions 320a, and nuts 322a are attached to the through holes 321a.
- a through hole 331a is formed in the second connection terminal portion 330a.
- the first heat transfer part 370 is provided in the front part of the overlapped part 340a, and the two second heat transfer parts 380 are provided on the left and right of the rear part of the overlapped part 340a.
- the first heat transfer part 370 includes a first plate-like part 371 and two second plate-like parts 372 having a rectangular plate shape.
- the second plate-shaped portion 372 on the front side extends from the front end portion of the first plate-shaped portion 371 toward the second overlapping portion 342 side and connects to the rear end portion of the second overlapping portion 342 .
- the second plate-shaped portion 372 on the rear side extends from the rear end portion of the first plate-shaped portion 371 toward the first overlapping portion 341 side and connects to the front end portion of the first overlapping portion 341 .
- Each of the second plate-like portions 372 is formed with three oval circulation holes 373 for circulating the filling resin 600 in the liquid state.
- the two second heat transfer parts 380 include a first plate-like part 381 and a second plate-like part 382 having a rectangular plate shape.
- a second plate-like portion 382 extends from the left end of the first plate-like portion 381 toward the first overlapping portion 341 and connects to the left end of the first overlapping portion 341 .
- a support piece 383 extends toward the first overlapped portion 341 from the right end portion of the first plate-shaped portion 381 and contacts the first overlapped portion 341 .
- the right side of the first plate-like portion 381 is supported by the support piece 383 .
- the second plate-like portion 382 extends from the right end of the first plate-like portion 381 toward the first overlapping portion 341 and connects to the right end of the first overlapping portion 341 .
- a support piece 383 extends toward the first overlapping portion 341 from the left end portion of the first plate-shaped portion 381 and contacts the first overlapping portion 341 .
- the left side of the first plate-like portion 381 is supported by the support piece 383 .
- the first insulating sheet 810a includes a first insulating portion 811a, two second insulating portions 812a, and a third insulating portion 813a. It has the same shape as the first insulating sheet 810 of the first embodiment except that it is elongated. A flow hole 814a is formed in the first insulating portion 811a, and notches 815a are formed in the two second insulating portions 812a. First insulating sheet 810 a ensures insulation between second bus bar 300 a and first bus bar 200 a and first electrodes 110 of four capacitor elements 100 .
- the first heat transfer section 370 is positioned on the front side, and the two second heat transfer sections 380 are positioned side by side on the rear side.
- the first plate-like portion 371 of the first heat transfer portion 370 and the first plate-like portions 381 of the two second heat transfer portions 380 extend along the opening 506 of the case 500 and are entirely exposed from the filling resin 600.
- their surfaces are exposed from the filling resin 600 as exposed surfaces 374 and 384 .
- the height positions of the three exposed surfaces 374 and 384 are made equal.
- the cooling member 2 is attached to the exposed surface 374 of the first heat transfer section 370 and the exposed surfaces 384 of the two second heat transfer sections 380, as indicated by the dashed line in FIG. 7(a). At this time, an insulating sheet (not shown) similar to the insulating sheet 700 of the first embodiment is sandwiched between the cooling member 2 and the three exposed surfaces 374 and 384 that are mounting surfaces. Insulation between bus bar 300 and cooling member 2 is achieved.
- the inverter device When the inverter device operates and the film capacitor 1B is energized, the four capacitor elements 100 generate heat.
- the heat generated from the four capacitor elements 100 is transmitted to the electrode terminal portion 210a of the first busbar 200a, the two electrode terminal portions 310a of the second busbar 300a, and the two first relay portions 350a.
- the first heat transfer section 370 and the two second heat transfer sections 380 are cooled by the cooling member 2 .
- the heat transmitted to the two electrode terminal portions 310a and the two first relay portions 350a moves to the overlapping portion 340a, and the second plates of the first heat transfer portion 370 and the two second heat transfer portions 380 It is transmitted to the plate-like portions 372 and 382 , moves through these second plate-like portions 372 and 382 , reaches the first plate-like portions 371 and 381 , and is discharged from the exposed surfaces 374 and 384 to the cooling member 2 .
- the overlapped portion 340a overlaps the electrode terminal portion 210a so as to be close to it.
- the heat transmitted to the electrode terminal portion 210a also moves to the overlapping portion 340a, further moves to the exposed surfaces 374 and 384 of the first heat transfer portion 370 and the two second heat transfer portions 380, and moves to the exposed surfaces. 374 , 384 to the cooling member 2 .
- the heat transfer portions are integrally formed with the second bus bar 300a, extend along the opening 506 of the case 500, and expose the surface thereof.
- the insulating sheet 700 is interposed between the heat transfer plate 400 and the overlapping portion 340 of the second bus bar 300 .
- a configuration in which the opposing surface 402 of the heat transfer plate 400 directly contacts the overlapped portion 340 without the insulating sheet 700 interposed between the heat transfer plate 400 and the overlapped portion 340 may be adopted.
- an insulating sheet is sandwiched between the exposed surface 401 and the cooling member 2 when the cooling member 2 is attached to the exposed surface 401 of the heat transfer plate 400 .
- the heat transfer plate 400 is composed of the first plate-like portion 410 and the second plate-like portion 420 having different sizes.
- the heat transfer plate 400 may have any shape as long as it is configured as a plate-like member.
- the three heat transfer portions, the first heat transfer portion 370 and the two second heat transfer portions 380, are integrally formed with the second bus bar 300, but how many heat transfer portions are provided? There may be.
- the entire first plate-like portions 371 and 381 of the first heat transfer portion 370 and the two second heat transfer portions 380 are exposed from the filling resin 600 .
- the entire first plate-like portions 371 and 381 do not have to be exposed from the filling resin 600 .
- the first busbars 200, 200a and the second busbars 300, 300a are provided with the three first connection terminal portions 220, 320, 220a, 320a. , the number of the first connection terminal portions 220, 320, 220a, 320a may be changed as appropriate.
- the first bus bars 200, 200a and the second bus bars 300, 300a have two types of connection terminal portions: first connection terminal portions 220, 320, 220a, 320a and second connection terminal portions 230, 330, 230a, 330a.
- a configuration in which one type of connection terminal portion is provided may be employed instead of the configuration in which the connection terminal portion is provided.
- the first busbars 200 and 200a are P-pole busbars
- the second busbars 300 and 300a are N-pole busbars
- the first busbars 200 and 200a may be N-pole busbars
- the second busbars 300 and 300a may be P-pole busbars.
- a plurality of (two) capacitor elements 100 are arranged in two rows in the left-right direction within the case 500 .
- the arrangement of capacitor elements 100 within case 500 may be arbitrary, and for example, a plurality of capacitor elements 100 may be arranged in a row within case 500 .
- the second bus bars 300, 300a may be provided with one electrode terminal portion 310, 310a and one first relay portion 350, 350a.
- the film capacitors 1A and 1B are provided with four capacitor elements 100 .
- the number of capacitor elements 100 can be changed as appropriate, including the case where it is one.
- the capacitor element 100 is formed by stacking two metallized films in which aluminum is vapor-deposited on a dielectric film, and winding or laminating the stacked metallized films.
- these capacitor elements 100 are formed by stacking a metallized film in which aluminum is vapor-deposited on both sides of a dielectric film and an insulating film, and winding or laminating this. may be formed.
- the capacitor element 100 is arranged in the case 500 such that the first electrode 110 and the second electrode 120 face the opening 506 side and the bottom portion 501 side of the case 500.
- the present invention is applied to the film capacitors 1A and 1B that are used.
- the present invention can also be applied to a film capacitor in which the capacitor element is arranged inside the case such that the first electrode and the second electrode face the side surface of the case.
- the capacitor in the first bus bar, for example, between the electrode terminal portion connected to the first electrode and the connection terminal portion connected to the external terminal, the capacitor is provided from the opening side of the case as a relay portion for relaying these.
- a first portion is provided that covers the peripheral surface of the element.
- the film capacitors 1A and 1B are mentioned as an example of the capacitor of the present invention.
- the present invention can also be applied to capacitors other than film capacitors.
- the present invention is useful for capacitors used in various electronic devices, electrical devices, industrial devices, vehicle electrical equipment, and the like.
- 1A film capacitor (capacitor) 2 cooling member 100 capacitor element 110 first electrode 120 second electrode 200 first bus bar 210 electrode terminal portion (first electrode terminal portion, first portion) 300 second bus bar 310 electrode terminal portion (second electrode terminal portion) 340 overlapping part (second part) 350 first relay section (third section) 400 heat transfer plate (heat transfer part) 401 exposed surface 402 facing surface 410 first plate-shaped portion 420 second plate-shaped portion 500 case 501 bottom portion 506 opening 600 filling resin 1B film capacitor 200a first bus bar 210a electrode terminal portion (first electrode terminal portion, first portion) 300a second bus bar 310a electrode terminal portion (second electrode terminal portion) 340a overlapping portion (second portion) 350a first relay portion (third portion) 370 first heat transfer section (heat transfer section) 371 First plate-shaped part 372 Second plate-shaped part 374 Exposed surface 380 First heat transfer part (heat transfer part) 381 First plate-shaped portion 382 Second plate-shaped portion 384 Exposed surface
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Abstract
Description
第1実施形態に係るフィルムコンデンサ1Aについて説明する。
以上、本実施形態によれば、以下の効果が奏される。
第2実施形態に係るフィルムコンデンサ1Bについて説明する。
本実施形態のフィルムコンデンサ1Bによっても、上記第1実施形態と同様に、伝熱部(第1伝熱部370、第2伝熱部380)を外部から冷却することにより、コンデンサ素子100から第2バスバー300aに伝わった熱を、伝熱部を通じて良好に外部へ放出できるとともに、第1バスバー200aに伝わった熱を、第2部分(重合部340a)および伝熱部を通じて良好に外部へ放出できる。よって、コンデンサ素子100からの第1バスバー200aおよび第2バスバー300aを通じた放熱性を高めることができ、通電時にコンデンサ素子100が高温になることを抑制できる。
以上、本発明の実施形態について説明したが、本発明は、上記実施形態に限定されるものではなく、また、本発明の適用例も、上記実施形態の他に、種々の変更が可能である。
2 冷却部材
100 コンデンサ素子
110 第1電極
120 第2電極
200 第1バスバー
210 電極端子部(第1電極端子部、第1部分)
300 第2バスバー
310 電極端子部(第2電極端子部)
340 重合部(第2部分)
350 第1中継部(第3部分)
400 伝熱板(伝熱部)
401 露出面
402 対向面
410 第1板状部
420 第2板状部
500 ケース
501 底面部
506 開口
600 充填樹脂
1B フィルムコンデンサ
200a 第1バスバー
210a 電極端子部(第1電極端子部、第1部分)
300a 第2バスバー
310a 電極端子部(第2電極端子部)
340a 重合部(第2部分)
350a 第1中継部(第3部分)
370 第1伝熱部(伝熱部)
371 第1板状部
372 第2板状部
374 露出面
380 第1伝熱部(伝熱部)
381 第1板状部
382 第2板状部
384 露出面
Claims (7)
- コンデンサ素子と、
前記コンデンサ素子の両端面に設けられた第1電極および第2電極にそれぞれ接続される第1バスバーおよび第2バスバーと、
一面が開口し、前記コンデンサ素子が収容されるケースと、
前記ケース内に充填される充填樹脂と、を備え、
前記第1バスバーは、前記充填樹脂中において前記開口側から前記コンデンサ素子を覆う第1部分を含み、
前記第2バスバーは、前記充填樹脂中において前記開口側から前記第1部分に重なる第2部分を含み、
前記第1部分に重なるように前記第2部分よりも前記開口側に位置し、前記充填樹脂から露出する露出面を含み、前記第2部分に伝わった熱を受け取って前記露出面から放出させる伝熱部を、さらに備える、
ことを特徴とするコンデンサ。 - 請求項1に記載のコンデンサにおいて、
前記伝熱部は、前記第2バスバーと別体に形成された板状部材であり、前記露出面と背向し前記第2部分の表面と対向する対向面を含む、
ことを特徴とするコンデンサ。 - 請求項2に記載のコンデンサにおいて、
前記伝熱部は、
前記露出面を有する第1板状部と、
前記第1板状部と一体形成され、前記対向面を有する第2板状部とを含み、
前記第1板状部は、前記第2板状部よりもサイズが大きい、
ことを特徴とするコンデンサ。 - 請求項1に記載のコンデンサにおいて、
前記伝熱部は、前記第2バスバーと一体形成され、
前記開口に沿って延び、その表面が前記露出面として前記充填樹脂から露出する第1板状部と、
前記第1板状部から前記第2部分側へと延びて前記第2部分に繋がる第2板状部と、を含む、
ことを特徴とするコンデンサ。 - 請求項1ないし4の何れか一項に記載のコンデンサにおいて、
前記コンデンサ素子は、前記第1電極が前記開口側を向き、前記第2電極が前記ケースの底面部側を向くように前記ケース内に配置され、
前記第1バスバーは、
前記第1電極を覆い、前記第1電極に接続される、前記第1部分となる第1電極端子部を含み、
前記第2バスバーは、
前記第2電極を覆い、前記第2電極に接続される第2電極端子部と、
前記第2電極端子部から延びて前記第2部分へ繋がる第3部分と、を含む、
ことを特徴とするコンデンサ。 - 請求項5に記載のコンデンサにおいて、
前記ケース内には、複数個の前記コンデンサ素子が2列に並んで配置され、
前記第2バスバーは、
各列の複数個の前記コンデンサ素子の前記第2電極にそれぞれが接続される2つの前記第2電極端子部と、
各前記第2電極端子部から各列の外側を通るように延びて、相反する側から前記第2部分に繋がる2つの前記第3部分と、を含む、
ことを特徴とするコンデンサ。 - 請求項1ないし6の何れか一項に記載のコンデンサにおいて、
前記露出面には、前記伝熱部を冷却する冷却部材が装着される、
ことを特徴とするコンデンサ。
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WO2024171701A1 (ja) * | 2023-02-15 | 2024-08-22 | パナソニックIpマネジメント株式会社 | コンデンサ |
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JP2003047259A (ja) * | 2001-08-03 | 2003-02-14 | Nissan Motor Co Ltd | 電力変換装置 |
CN105931840A (zh) * | 2016-05-24 | 2016-09-07 | 厦门法拉电子股份有限公司 | 一种低热阻薄膜电容器及其制作方法 |
WO2017145830A1 (ja) * | 2016-02-25 | 2017-08-31 | パナソニックIpマネジメント株式会社 | コンデンサ |
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JP2003047259A (ja) * | 2001-08-03 | 2003-02-14 | Nissan Motor Co Ltd | 電力変換装置 |
WO2017145830A1 (ja) * | 2016-02-25 | 2017-08-31 | パナソニックIpマネジメント株式会社 | コンデンサ |
CN105931840A (zh) * | 2016-05-24 | 2016-09-07 | 厦门法拉电子股份有限公司 | 一种低热阻薄膜电容器及其制作方法 |
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JP7508382B2 (ja) | 2021-02-03 | 2024-07-01 | 株式会社指月電機製作所 | コンデンサ |
WO2024171701A1 (ja) * | 2023-02-15 | 2024-08-22 | パナソニックIpマネジメント株式会社 | コンデンサ |
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