WO2022059530A1 - Condensateur - Google Patents

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Publication number
WO2022059530A1
WO2022059530A1 PCT/JP2021/032546 JP2021032546W WO2022059530A1 WO 2022059530 A1 WO2022059530 A1 WO 2022059530A1 JP 2021032546 W JP2021032546 W JP 2021032546W WO 2022059530 A1 WO2022059530 A1 WO 2022059530A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
insulating member
contact portion
contact
bent
Prior art date
Application number
PCT/JP2021/032546
Other languages
English (en)
Japanese (ja)
Inventor
武志 今村
寿久 三浦
英里子 金谷
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2022550478A priority Critical patent/JPWO2022059530A1/ja
Priority to CN202180061847.9A priority patent/CN116075912A/zh
Publication of WO2022059530A1 publication Critical patent/WO2022059530A1/fr

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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
    • H01G4/002—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
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/32—Wound capacitors

Definitions

  • the present invention relates to a capacitor.
  • Patent Document 1 describes a case-molded capacitor that reduces ESL (equivalent series inductance), which is an inductance component of a bus bar.
  • protrusions are provided on the surfaces of both the pair of bus bars and the insulating plates facing each other, and the protrusions are fitted into the holes provided in the overlapping portions of the bus bars.
  • the mutual positions of the external connection terminals of the pair of bus bars are fixed, and the positions of the pair of bus bars and the insulating plate are also fixed.
  • the contact between the protrusion and the hole in the direction orthogonal to the surface of the insulating plate, that is, in the overlapping direction of the pair of bus bars is the thickness of the flat bus bar.
  • the bus bar easily moves in this overlapping direction, and it is difficult to stably position the bus bar with respect to the insulating plate.
  • an object of the present invention is to provide a capacitor that facilitates stable positioning of the bus bar with respect to the insulating member.
  • the capacitor according to the main aspect of the present invention includes a capacitor element, a first bus bar and a second bus bar connected to the capacitor element, and the first bus bar and the second bus bar, respectively, in a flat plate shape in which they overlap each other.
  • the first polymerized portion and the second polymerized portion of the above, and an insulating member arranged between the first polymerized portion and the second polymerized portion and insulating between the polymerized portions are provided.
  • at least one of the first bus bar and the second bus bar is a bent portion that is bent at a right angle to the polymerized portion from each of the opposing ends of the polymerized portion of the one bus bar.
  • the insulating member has a first contact portion that contacts the bent portion from the outside of the one bus bar and a second contact portion that penetrates the through hole and contacts the bent portion from the inside of the one bus bar.
  • the first contact portion and the second contact portion include a holding portion that sandwiches each of the bent portions.
  • FIG. 1 is a perspective view of a film capacitor according to an embodiment.
  • FIG. 2A is a perspective view of the capacitor element unit seen from the front upper side according to the embodiment
  • FIG. 2B is a perspective view of the capacitor element unit seen from the rear upper side according to the embodiment.
  • FIG. 3A is a perspective view of the first bus bar according to the embodiment
  • FIG. 3B is a perspective view of the second bus bar according to the embodiment.
  • FIG. 4A is a perspective view of the insulating member seen from the front upper side according to the embodiment
  • FIG. 4B is a perspective view of the insulating member seen from the rear upper side according to the embodiment. be.
  • FIG. 5 is a front view of a main part of the capacitor element unit according to the embodiment.
  • FIG. 6 (a) is a rear view of a main part of a capacitor element unit according to an embodiment
  • FIG. 6 (b) is a sectional view taken along the line AA'of FIG. 6 (a).
  • FIG. 7 is a cross-sectional view of a mold used for injection molding of an insulating member according to an embodiment.
  • 8 (a) and 8 (b) are plan views of the first member and the second member constituting the mold according to the embodiment, respectively, as viewed from the divided surface side thereof.
  • FIG. 9 is a front view of the first bus bar and the insulating member according to the modified example.
  • FIG. 10 is a rear view of a main part of the capacitor element unit according to the modified example.
  • the film capacitor 1 which is an embodiment of the capacitor of the present invention, will be described with reference to the drawings.
  • each figure is appropriately marked with front-back, left-right, and up-down directions.
  • the indicated direction only indicates the relative direction of the film capacitor 1, and does not indicate the absolute direction.
  • names may be given according to the directions shown in the drawings.
  • the film capacitor 1 corresponds to the “capacitor” described in the claims. Further, the front-back direction, the left-right direction, and the up-down direction correspond to the "overlapping direction”, the "pinching direction”, and the “vertical direction” described in the claims, respectively.
  • FIG. 1 is a perspective view of the film capacitor 1.
  • the film capacitor 1 includes a capacitor element unit 100, a case 200 in which the capacitor element unit 100 is housed, and a filling resin 300 filled in the case 200.
  • the portion of the capacitor element unit 100 buried in the filling resin 300, particularly the capacitor element 400, is protected from moisture and impact by the case 200 and the filling resin 300.
  • FIG. 2A is a perspective view of the capacitor element unit 100 seen from the front upper side
  • FIG. 2B is a perspective view of the capacitor element unit 100 seen from the rear upper side.
  • the capacitor element unit 100 includes a capacitor element 400, a first bus bar 500, a second bus bar 600, and an insulating member 700.
  • the capacitor element 400 is formed by stacking two metallized films on which aluminum is vapor-deposited on a dielectric film, winding or laminating the stacked metallized films, and pressing them in a flat shape.
  • the first electrode 410 is formed on one end face by spraying a metal such as zinc
  • the second electrode 420 is formed on the other end face by spraying a metal such as zinc.
  • the capacitor element 400 of the present embodiment is formed of a metallized film in which aluminum is vapor-deposited on a dielectric film, but in addition to this, metallization in which other metals such as zinc and magnesium are vapor-deposited. It may be formed of a film. Alternatively, the capacitor element 400 may be formed of a metallized film obtained by depositing a plurality of metals among these metals, or may be formed by a metallized film obtained by depositing an alloy of these metals. ..
  • FIG. 3A is a perspective view of the first bus bar 500.
  • the first bus bar 500 is formed by appropriately cutting and raising a metal plate, for example, a copper plate, which is a conductive material having a predetermined shape, and subjecting it to processing such as bending.
  • a metal plate for example, a copper plate, which is a conductive material having a predetermined shape
  • the first bus bar 500 includes a main body portion 510 having a rectangular flat plate shape.
  • the main body portion 510 is divided into a portion that becomes the first polymerized portion 511 and a portion that becomes a non-polymerized portion 512 that is continuous with the first polymerized portion 511 in the vertical direction.
  • the non-polymerized portion 512 is located above the first polymerized portion 511.
  • FIG. 3A the boundary between the first polymerized portion 511 and the non-polymerized portion 512 is shown by a two-dot chain line for convenience.
  • a part of the main body 510 is cut up from the upper part of the main body 510 included in the non-polymerized portion 512, so that four square connection terminal portions 520 are formed so as to be lined up in the left-right direction.
  • a square opening 513 larger than the connection terminal portion 520 is formed in the portion where each connection terminal portion 520 of the main body portion 510 is cut and raised. Each opening 513 is adjacent to the corresponding connection terminal portion 520 and is arranged in the left-right direction.
  • each square openings 514 are formed at the same positions as the four openings 513 in the left-right direction.
  • the four openings 514 have the same size as the four openings 513.
  • vertically long rectangular through holes 515 are formed at the left and right ends.
  • a circular opening 516 is formed in the central portion of the lower portion of the main body portion 510 included in the first polymerization portion 511.
  • the first bus bar 500 includes an electrode terminal portion 530 that bends at a right angle to the main body portion 510 from the lower end portion of the main body portion 510.
  • the electrode terminal portion 530 has a rectangular plate shape elongated in the left-right direction.
  • the first bus bar 500 includes a main body portion 510, that is, a bent portion 540 that bends at a right angle to the main body portion 510 from each of the left end portion and the left end portion of the first polymerized portion 511 and the non-polymerized portion 512.
  • Each bent portion 540 has a rectangular plate shape elongated in the vertical direction.
  • Each through hole 515 is in contact with each bent portion 540.
  • FIG. 3B is a perspective view of the second bus bar 600.
  • the second bus bar 600 is formed by appropriately cutting and raising a metal plate, for example, a copper plate, which is a conductive material having a predetermined shape, and subjecting it to processing such as bending.
  • a metal plate for example, a copper plate, which is a conductive material having a predetermined shape
  • the second bus bar 600 includes a main body portion 610 having a square flat plate shape.
  • the main body portion 610 is divided into a portion that becomes the second polymerized portion 611 and a portion that becomes a non-polymerized portion 612 that is continuous with the second polymerized portion 611 in the vertical direction.
  • the non-polymerized portion 612 is located below the second polymerized portion 611.
  • FIG. 3B the boundary between the second polymerized portion 611 and the non-polymerized portion 612 is shown by a two-dot chain line for convenience.
  • a part of the main body 610 is cut up from the upper part of the main body 610 included in the second polymerization section 611, so that four square connection terminal portions 620 are formed so as to be lined up in the left-right direction.
  • a square opening 613 larger than the connection terminal portion 620 is formed in a portion of the main body portion 610 where each connection terminal portion 620 is cut and raised.
  • Each opening 613 is adjacent to the corresponding connection terminal portion 620 and is arranged in the left-right direction.
  • the four openings 613 have the same size as the four openings 514 of the first bus bar 500.
  • a circular opening 614 is formed in the center of the middle portion of the main body portion 610 included in the second polymerization portion 611.
  • the second bus bar 600 includes an electrode terminal portion 630 that bends at a right angle to the main body portion 610 from the lower end portion of the main body portion 610.
  • the electrode terminal portion 630 has a rectangular plate shape elongated in the left-right direction.
  • FIG. 4A is a perspective view of the insulating member 700 seen from the front upper side
  • FIG. 4B is a perspective view of the insulating member 700 seen from the rear upper side.
  • the insulating member 700 is formed by injection molding, which will be described later, using a resin such as polyphenylene sulfide (PPS) as a material.
  • a resin such as polyphenylene sulfide (PPS) as a material.
  • the insulating member 700 includes a main body portion 710 having a substantially square plate shape long in the left-right direction.
  • the main body portion 710 is divided into a first portion 711, a second portion 712 continuous with the first portion 711, and a third portion 713 continuous with the first portion 711 in the vertical direction.
  • the second portion 712 is located above the first portion 711 and the third portion 713 is located below the first portion 711.
  • FIGS. 4A and 4B for convenience, the boundary between the first part 711 and the second part 712 and the boundary between the first part 711 and the third part 713 are shown by a two-dot chain line.
  • a part of the front surface 710a of the main body portion 710 protrudes and a part of the rear surface 710b of the main body portion 710 is recessed in the central portion, whereby a substantially columnar protruding portion 714 is formed. Will be done.
  • the protrusion 714 has a recess 714a on the back side.
  • a substantially columnar gate mark 715 is formed on a surface recessed by the protruding portion 714, that is, on the bottom surface of the recessed portion 714a.
  • the gate mark 715 is formed by injection molding.
  • the outer diameter of the protrusion 714 is smaller than the inner diameter of the opening 516 of the first bus bar 500 and the opening 614 of the second bus bar 600.
  • first portion 711 four square-shaped openings 716 arranged in the left-right direction are formed at the upper part.
  • the four openings 716 have the same size as the four openings 514 of the first bus bar 500.
  • two first ribs 717 are formed on the rear surface 710b so as to project rearward and extend in the left-right direction from the left end portion to the right end portion.
  • the two first ribs 717 are arranged in the vertical direction with a predetermined interval.
  • the predetermined distance is set to a distance (1 mm) or more at which the two first ribs 717 are considered to be separated from each other according to the provisions relating to the creepage distance.
  • the two first ribs 717 are connected by the second rib 718 at the left end and right end positions.
  • the height of each second rib 718 is the same as the height of each first rib 717.
  • the insulating member 700 is provided with a holding portion 720 at the left end portion and the right end portion on the front surface 710a side of the main body portion 710, respectively.
  • the sandwiching portion 720 is composed of a first contact portion 721 located on the outside and a second contact portion 722 located on the inside of the insulating member 700.
  • the first contact portion 721 has a rectangular plate shape elongated in the vertical direction.
  • the second contact portion 722 has a rectangular parallelepiped shape that is long in the vertical direction.
  • the vertical dimension of the first contact portion 721 is larger than the vertical dimension of the second contact portion 722, and the horizontal dimension of the first contact portion 721 is larger than the horizontal dimension of the second contact portion 722. small.
  • the dimensions of the first contact portion 721 and the second contact portion 722 are equal to each other in the front-rear direction.
  • the dimensions of the bent portion 540 of the first bus bar 500 in the front-rear direction are larger than the dimensions of the first contact portion 721 and the second contact portion 722 in the front-rear direction.
  • the first contact portion 721 includes two first ribs 721a.
  • the two first ribs 721a are side surfaces of the first contact portion 721 facing the second contact portion 722, and are formed at the upper and lower positions of the second contact portion 722, respectively, and extend in the front-rear direction.
  • the second contact portion 722 includes one second rib 722a.
  • the second rib 722a is a side surface of the second contact portion 722 facing the first contact portion 721, is formed at a position between the two first ribs 721a, and extends in the front-rear direction.
  • the gap between the first rib 721a and the second rib 722a is slightly smaller than the thickness (dimension in the left-right direction) of the bent portion 540 of the first bus bar 500.
  • the first bus bar 500 is mounted on the front side of the insulating member 700.
  • the main body 510 of the first bus bar 500 is in contact with the front surface 710a of the main body 710 of the insulating member 700.
  • the protrusion 714 of the insulating member 700 penetrates the opening 516 of the first bus bar 500.
  • the bent portions 540 on the left and right sides of the first bus bar 500 are sandwiched by the sandwiching portions 720 of the insulating member 700.
  • the four openings 514 of the first bus bar 500 overlap the four openings 716 of the insulating member 700.
  • the second bus bar 600 is mounted on the rear side of the insulating member 700.
  • the main body 610 of the second bus bar 600 comes into contact with the rear surface 710b of the main body 710 of the insulating member 700.
  • the recess 714a of the insulating member 700 overlaps the opening 614 of the second bus bar 600, and the gate mark 715 overlaps the opening 614.
  • the height of the gate mark 715 may vary to some extent. When the gate mark 715 is raised and protrudes rearward from the recess 714a, the tip portion of the protruding gate mark 715 is inserted into the opening 614 and does not interfere with the main body portion 610 of the second bus bar 600.
  • each connection terminal portion 620 of the second bus bar 600 overlaps the four openings 716 of the insulating member 700, and each connection terminal portion 620 of the second bus bar 600 passes through the three overlapping openings 514, 716, 613. It protrudes in front of the first bus bar 500.
  • the terminal rows of the four connection terminal portions 620 are located below the four connection terminal portions 520. The positions of the front ends of the four connection terminal portions 520 and the positions of the front ends of the four connection terminal portions 620 are aligned.
  • the first polymerization section 511 of the first bus bar 500 and the second polymerization section 611 of the second bus bar 600 overlap each other in the front-rear direction.
  • the non-polymerized portion 512 of the first bus bar 500 does not overlap with the second polymerized portion 611
  • the non-polymerized portion 612 of the second bus bar 600 does not overlap with the first polymerized portion 511.
  • the first portion 711 of the insulating member 700 is interposed between the first polymerization section 511 and the second polymerization section 611.
  • the second portion 712 of the insulating member 700 overlaps the non-polymerized portion 512 of the first bus bar 500.
  • the third portion 713 of the insulating member 700 is interposed between the non-polymerized portion 612 of the second bus bar 600 and the peripheral surface of the capacitor element 400.
  • a capacitor element 400 is arranged between the electrode terminal portion 530 of the first bus bar 500 and the electrode terminal portion 630 of the second bus bar 600.
  • the electrode terminal portion 530 is joined to the first electrode 410 of the capacitor element 400 by a joining method such as soldering.
  • the first bus bar 500 is electrically connected to the first electrode 410.
  • the electrode terminal portion 630 is joined to the second electrode 420 of the capacitor element 400 by a joining method such as soldering.
  • the second bus bar 600 is electrically connected to the second electrode 420.
  • Pin-shaped terminals may be formed in the electrode terminal portions 530 and 630, and these terminals may be joined to the electrodes 410 and 420 by soldering or the like.
  • FIG. 5 is a front view of a main part of the capacitor element unit 100.
  • the first rib 721a of the first contact portion 721 contacts the bent portion 540 from the outside of the first bus bar 500, and the through hole of the first bus bar 500.
  • the second rib 722a of the second contact portion 722 penetrating the 515 contacts the bent portion 540 from the inside of the first bus bar 500.
  • the first rib 721a and the second rib 722a are so-called crash ribs, and when the bent portion 540 is inserted between the first contact portion 721 and the second contact portion 722, the tip thereof is formed by the bent portion 540. The part is scraped or deformed.
  • the first bus bar 500 is positioned in the front-rear and left-right directions with respect to the insulating member 700 by the positioning structure of the bent portion 540 and the holding portion 720.
  • the vertical dimension of the through hole 515 is larger than the vertical dimension of the second contact portion 722, and a relatively large gap is formed above and below between the second contact portion 722 and the through hole 515.
  • another positioning structure (not shown) is provided between the first bus bar 500 and the insulating member 700, and the positioning structure allows the first bus bar 500 to move up and down with respect to the insulating member 700.
  • a positioning structure (not shown) is also provided between the second bus bar 600 and the insulating member 700, and the positioning structure allows the second bus bar 600 to be positioned vertically, front-back, and left-right with respect to the insulating member 700. ..
  • FIG. 6A is a rear view of a main part of the capacitor element unit 100
  • FIG. 6B is a cross-sectional view taken along the line AA'of FIG. 6A.
  • the four connection terminal portions 520 of the first bus bar 500 project from the non-polymerizing portion 512 to the opposite side (front side) of the second portion 712 of the insulating member 700.
  • the upper end of the second portion 712 has the same height position as the lower end of the four openings 513 of the first bus bar 500, and the second portion 712 has four openings 513 and four connections in the anteroposterior direction. It does not overlap with the terminal part 520.
  • the second portion 712 may overlap the lower end portions of the four openings 513 if the amount is small.
  • the two first ribs 717 project to the opposite side (rear side) of the non-polymerized portion 512 of the first bus bar 500, and the non-polymerized portion 512 and the second are viewed from the vertical direction. It has a dimension slightly longer than the overlapping range R in the left-right direction so that it exists in the overlapping range R where the second polymerization portion 611 of the bus bar 600 overlaps. Further, the two second ribs 718 connect the two first ribs 717 outside the overlapping range R in the left-right direction.
  • the second portion of the insulating member 700 is located between the non-polymerized portion 512 of the first bus bar 500 and the second polymerized portion 611 of the second bus bar 600 in the vertical direction.
  • the creepage distance D is secured by the 712 and the two first ribs 717.
  • the rear surface side of the second portion 712 is formed into an uneven surface by the two first ribs 717. Therefore, the creepage distance D becomes longer as compared with the case where the rear surface side of the second portion 712 is planar.
  • the case 200 is made of resin and is formed of, for example, polyphenylene sulfide (PPS), which is a thermoplastic resin.
  • PPS polyphenylene sulfide
  • the case 200 is formed in a substantially rectangular parallelepiped box shape and has an opening 201 on the upper surface.
  • the case 200 is provided with mounting tabs 210 on the left and right outer surfaces and the outer bottom surface.
  • Each mounting tab 210 is formed with an insertion hole 211 penetrating in the front-rear direction.
  • a metal collar 212 is fitted into the insertion hole 211 in order to increase the strength of the hole.
  • the filling resin 300 is a thermosetting resin such as an epoxy resin.
  • the capacitor element unit 100 is housed in the case 200 through the opening 201.
  • the filled resin 300 in the liquid phase state is injected into the case 200 in which the capacitor element unit 100 is housed through the opening 201.
  • the filling resin 300 is filled in the case 200 up to the vicinity of the opening 201, and when the injection of the filling resin 300 is completed, the case 200 is heated. As a result, the filling resin 300 in the case 200 is cured. In this way, the film capacitor 1 is completed.
  • the film capacitor 1 is mounted on an external device or the like.
  • the external device or the like is provided with, for example, four external terminals 2a on the positive electrode side and four external terminals 2b on the negative electrode side in the form of a bus bar.
  • four external terminals 2a pass through the opening 513 from the rear. It contacts the four connection terminal portions 520 of the first bus bar 500 and is connected to the connection terminal portions 520 by a joining method such as soldering.
  • connection terminal portions 620 of the second bus bar 600 come into contact with the four connection terminal portions 620 of the second bus bar 600 from the rear through the three openings 613, 716 and 514 overlapping in the front and rear, and are soldered to the connection terminal portions 620. It is connected by a joining method such as.
  • FIG. 7 is a cross-sectional view of a mold 800 used for injection molding of an insulating member 700.
  • 8 (a) and 8 (b) are plan views of the first member 801 and the second member 802 constituting the mold 800, respectively, as viewed from the divided surface side thereof.
  • the outer shape of the first forming surface 811 is shown by a broken line for convenience
  • the gate 820 is shown by a broken line for convenience.
  • the insulating member 700 is formed by injection molding using a mold 800 in the molding process.
  • the mold 800 is formed of a steel material, and is configured by connecting a first member 801 which is a core and a second member 802 which is a cavity. Inside the mold 800, a mold portion 810 having the shape of the insulating member 700 is formed.
  • the mold portion 810 includes a first molding surface 811 for forming the rear surface 710b of the main body portion 710 of the insulating member 700 and a second molding surface 812 for forming the front surface 710a of the main body portion 710 facing the rear surface 710b. ,including.
  • the first molded surface 811 includes a substantially columnar protruding portion 813 projecting toward the second molded surface 812 at a position corresponding to the central portion of the main body portion 710. Further, the second forming surface 812 includes a substantially columnar recess 814 that accommodates the protrusion 813. A gap is formed between the protrusion 813 and the recess 814. The distance between the tip surface 813a of the protrusion 813 and the bottom surface 814a of the recess 814 is made larger than the distance between the first molding surface 811 and the second molding surface 812 around the tip surface 813a and the bottom surface 814a. The portion between them becomes the large interval portion 815.
  • a gate 820 which is an injection port for resin into the mold portion 810, is formed on the tip surface 813a of the protruding portion 813.
  • the gate 820 is circular and opens to the large spacing portion 815.
  • a runner 830 connected to the gate 820 is formed on the first member 801.
  • the gate 820 is opened by a valve (not shown), and the molten resin is injected from the gate 820 into the mold portion 810 through the runner 830. As shown by the arrows in FIGS. 7 and 8, the resin first flows into the large spacing portion 815 of the mold portion 810. After that, the resin flows radially from the large interval portion 815 and spreads to the surroundings. As a result, the entire inside of the mold portion 810 is filled with the resin.
  • the gate 820 is provided on the first molded surface 811 of the mold portion 810 that constitutes the surface (rear surface 710b) of the main body portion 710 of the insulating member 700, the portion near the center of the plate-shaped main body portion 710. Resin can be injected from. As a result, the distance through which the resin flows in the mold portion 810 can be shortened, so that the resin can be easily distributed throughout the mold portion 810. Further, since the large interval portion 815 serves as a pool for the resin that has flowed into the mold portion 810 from the gate 820, the fluidity of the resin in the mold portion 810 is improved, and the time required for the resin to spread throughout the mold portion 810. Becomes shorter.
  • the resin filled in the mold portion 810 cools to form the insulating member 700.
  • the gate 820 is closed by the valve. At this time, resin remains in the vicinity of the gate 820, and the resin cools to form a gate mark 715. After that, the mold 800 is separated, and the insulating member 700 is taken out from the inside.
  • the insulating member 700 shown in FIGS. 4A and 4B is completed.
  • the main body 710 of the insulating member 700 is filled with resin between the protrusions 813 and the recesses 814 of the mold 810 to form the protrusions 714.
  • the tip of the protrusion 714 is thicker than the rest of the body 710.
  • a gate mark 715 projecting rearward is formed on the concave surface on the back side of the projecting portion 714.
  • the first bus bar 500 is formed in a bent portion 540 that bends at a right angle to the first polymerized portion 511 and a first polymerized portion 511 from each of the left and right end portions facing each other in the first polymerized portion 511. Includes through holes 515 in contact with each bent portion 540.
  • the insulating member 700 has a first contact portion 721 that contacts the bent portion 540 from the outside of the first bus bar 500, and a second contact that penetrates the through hole 515 and contacts the bent portion 540 from the inside of the first bus bar 500. It has a portion 722, and includes a sandwiching portion 720 that sandwiches each of the bent portions 540 by the first contact portion 721 and the second contact portion 722.
  • the range in which the first contact portion 721 and the second contact portion 722 come into contact with the bent portion 540 from both sides can be lengthened, so that the insulating member can be lengthened.
  • the force generated in the 700 to hold the first bus bar 500 in the front-rear direction can be increased. This makes it difficult for the first bus bar 500 to move in the front-rear direction, so that the first bus bar 500 can be stably positioned in the front-rear direction with respect to the insulating member 700.
  • the first rib 721a and the second rib 722a extending in the front-rear direction are formed on the surface facing the bent portion 540, and the first rib 721a and the second rib 721a and the second are formed.
  • the rib 722a comes into contact with the bent portion 540.
  • the bent portion 540 is reasonably inserted between the first contact portion 721 and the second contact portion 722. Can be inserted, and the first contact portion 721 and the second contact portion 722 can be reliably brought into contact with the bent portion 540.
  • first contact portion 721 and the second contact portion 722 have a long shape in the vertical direction.
  • the pinching range by the pinching portion 720 can be lengthened in the vertical direction, so that the bent portion 540 can be firmly pinched by the pinching portion 720.
  • the first bus bar 500 can be stably positioned in the left-right direction with respect to the insulating member 700.
  • a first contact portion 721 is formed at each of the left and right end portions of the insulating member 700, and the dimension of the first contact portion 721 is made smaller than the dimension of the second contact portion 722 in the left-right direction.
  • the larger the left-right dimension of the first contact portion 721 the larger the left-right dimension of the insulating member 700.
  • the dimension of the first contact portion 721 can be made relatively small and the dimension of the second contact portion 722 can be made relatively large in the left-right direction, so that the decrease in the strength of the holding portion 720 as a whole can be suppressed. At the same time, it is possible to suppress an increase in the dimensions of the insulating member 700 in the left-right direction.
  • the first rib 721a and the second rib 722a are formed on the first contact portion 721 and the second contact portion 722 of the sandwiching portion 720, respectively.
  • the first rib 721a and the second rib 722a may not be formed on the first contact portion 721 and the second contact portion 722, respectively.
  • the gap between the first contact portion 721 and the second contact portion 722 is made equal to the thickness (dimension in the left-right direction) of the bent portion 540 of the first bus bar 500.
  • the first bus bar 500 and the insulating member 700 it is extremely high for manufacturing the first bus bar 500 and the insulating member 700 so that the gap between the first contact portion 721 and the second contact portion 722 is equal to the thickness of the bent portion 540 of the first bus bar 500. Accuracy is required. Therefore, in order to easily manufacture the first bus bar 500 and the insulating member 700, it is desirable that the first rib 721a and the second rib 722a are formed on the first contact portion 721 and the second contact portion 722, respectively.
  • the positioning structure by the bent portion 540 and the sandwiching portion 720 is applied only between the first bus bar 500 and the insulating member 700.
  • a positioning structure with a bent portion 640 and a sandwiching portion 730 may also be applied between the second bus bar 600 and the insulating member 700.
  • the second bus bar 600 is provided with a bent portion 640 that bends at a right angle to the main body portion 610 from each of the left end portion and the left end portion of the second polymerization portion 611 of the main body portion 610.
  • a through hole 615 in contact with the bent portion 640 is formed in the second polymerization portion 611.
  • the insulating member 700 is provided with a holding portion 730 at the left end portion and the right end portion on the rear surface 710b side of the main body portion 710, respectively.
  • the sandwiching portion 730 is composed of a first contact portion 731 having two first ribs 731a and a second contact portion 732 having one second rib 732a.
  • the left and right bent portions 640 are sandwiched by the left and right sandwiching portions 730.
  • the second bus bar 600 is positioned in the front-rear and left-right directions with respect to the insulating member 700.
  • the sandwiching portion 730 may have a configuration in which the first rib 731a and the second rib 732a are not formed on the first contact portion 731 and the second contact portion 732, respectively.
  • the positioning structure by the bent portion 640 and the holding portion 730 is applied between the second bus bar 600 and the insulating member 700
  • the bent portion 540 and the holding portion are applied between the first bus bar 500 and the insulating member 700.
  • a configuration may be adopted to which the positioning structure according to 720 is not applied.
  • the number of the first rib 721a of the first contact portion 721 and the number of the second rib 722a of the second contact portion 722 is not limited to the number of the above-described embodiment, and may be changed as appropriate.
  • the first bus bar 500 is positioned in the front-rear and left-right directions with respect to the insulating member 700 by the bent portion 540 and the sandwiching portion 720.
  • the bent portion 540 and the sandwiching portion 720 may be configured so that the first bus bar 500 is positioned not only in the front-rear direction and the left-right direction but also in the vertical direction with respect to the insulating member 700.
  • the bent portion 640 and the sandwiching portion 730 are configured so that the second bus bar 600 is positioned not only in the front-rear direction and the left-right direction but also in the vertical direction with respect to the insulating member 700. May be done.
  • the vertical dimension of the first contact portion 721 is made larger than the vertical dimension of the second contact portion 722, and the horizontal dimension of the first contact portion 721 is the second contact portion 722. It was made smaller than the left and right dimensions of. However, in the first contact portion 721 and the second contact portion 722, the vertical dimensions and the horizontal dimensions may be equal to each other.
  • the bent portion 540 extends in the vertical direction from the first polymerized portion 511 to the non-polymerized portion 512.
  • the bent portion 540 may be configured not to extend to the non-polymerized portion 512, and may be bent with respect to the first polymerized portion 511 so as to have a length sandwiched between the sandwiched portions 720 in the vertical direction. You just have to.
  • one capacitor element 400 is provided in the film capacitor 1.
  • the number of the capacitor elements 400 may be two or more, and may be appropriately changed.
  • the capacitor element 400 is formed by stacking two metallized films on which aluminum is vapor-deposited on a dielectric film, and winding or laminating the laminated metallized films.
  • these capacitor elements 400 may be formed by superimposing a metallized film in which aluminum is vapor-deposited on both sides of a dielectric film and an insulating film, and winding or laminating them.
  • the film capacitor 1 is mentioned as an example of the capacitor of the present invention.
  • the present invention can also be applied to capacitors other than the film capacitor 1.
  • the terms such as “upper” and “lower” indicate the relative direction depending only on the relative positional relationship of the constituent members, and indicate the vertical direction and the horizontal direction. It does not indicate the absolute direction such as.
  • the present invention is useful for capacitors used in various electronic devices, electrical devices, industrial devices, electrical components of vehicles, and the like.
  • Film capacitor (capacitor) 400 Capacitor element 500 1st bus bar 511 1st polymerization part 515 Through hole 540 Folded part 600 2nd bus bar 611 2nd polymerization part 700 Insulation member 720 Holding part 721 1st contact part 721a 1st rib 722 2nd contact part 722a 2 ribs

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

L'invention concerne un première barre omnibus et une seconde barre omnibus comprenant, respectivement, une première partie de chevauchement en forme de plaque et une seconde partie de chevauchement en forme de plaque qui se chevauchent, l'espace entre les sections de chevauchement étant isolé par un élément d'isolation. La première barre omnibus comprend : des sections pliées qui sont pliées à angle droit par rapport à la première section de chevauchement à partir de chaque extrémité opposée de la section de chevauchement ; et des trous traversants formés dans la première section de chevauchement et touchant chacune des sections pliées. L'élément d'isolation comprend une partie de serrage comprenant une première partie de contact qui entre en contact avec les sections pliées depuis le côté extérieur de la première barre omnibus, et une seconde partie de contact qui passe à travers les trous traversants et entre en contact avec les sections pliées à partir du côté intérieur de la première barre omnibus, la partie de serrage serrant les sections pliées à l'aide de la première partie de contact et de la seconde partie de contact.
PCT/JP2021/032546 2020-09-18 2021-09-03 Condensateur WO2022059530A1 (fr)

Priority Applications (2)

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JP2022550478A JPWO2022059530A1 (fr) 2020-09-18 2021-09-03
CN202180061847.9A CN116075912A (zh) 2020-09-18 2021-09-03 电容器

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Application Number Priority Date Filing Date Title
JP2020-157933 2020-09-18
JP2020157933 2020-09-18

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WO2022059530A1 true WO2022059530A1 (fr) 2022-03-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010251400A (ja) * 2009-04-13 2010-11-04 Panasonic Corp ケースモールド型コンデンサ
WO2016027462A1 (fr) * 2014-08-21 2016-02-25 パナソニックＩｐマネジメント株式会社 Condensateur à film
JP2016152243A (ja) * 2015-02-16 2016-08-22 パナソニックＩｐマネジメント株式会社 コンデンサおよびインバータ
JP2017112168A (ja) * 2015-12-15 2017-06-22 パナソニックＩｐマネジメント株式会社 フィルムコンデンサ
WO2018198527A1 (fr) * 2017-04-26 2018-11-01 パナソニックＩｐマネジメント株式会社 Condensateur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010251400A (ja) * 2009-04-13 2010-11-04 Panasonic Corp ケースモールド型コンデンサ
WO2016027462A1 (fr) * 2014-08-21 2016-02-25 パナソニックＩｐマネジメント株式会社 Condensateur à film
JP2016152243A (ja) * 2015-02-16 2016-08-22 パナソニックＩｐマネジメント株式会社 コンデンサおよびインバータ
JP2017112168A (ja) * 2015-12-15 2017-06-22 パナソニックＩｐマネジメント株式会社 フィルムコンデンサ
WO2018198527A1 (fr) * 2017-04-26 2018-11-01 パナソニックＩｐマネジメント株式会社 Condensateur

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JPWO2022059530A1 (fr) 2022-03-24
CN116075912A (zh) 2023-05-05

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