WO2020031676A1 - Capacitor and method for producing capacitor - Google Patents

Capacitor and method for producing capacitor Download PDF

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Publication number
WO2020031676A1
WO2020031676A1 PCT/JP2019/028733 JP2019028733W WO2020031676A1 WO 2020031676 A1 WO2020031676 A1 WO 2020031676A1 JP 2019028733 W JP2019028733 W JP 2019028733W WO 2020031676 A1 WO2020031676 A1 WO 2020031676A1
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WO
WIPO (PCT)
Prior art keywords
terminal portion
terminal
connection terminal
rear connection
bus bar
Prior art date
Application number
PCT/JP2019/028733
Other languages
French (fr)
Japanese (ja)
Inventor
柏林 丁
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 CN202311025518.6A priority Critical patent/CN116936259A/en
Priority to CN201980049921.8A priority patent/CN112514015B/en
Priority to JP2020536431A priority patent/JP7426559B2/en
Publication of WO2020031676A1 publication Critical patent/WO2020031676A1/en

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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
    • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
    • H01G13/006—Apparatus or processes for applying 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
    • H01G4/002—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
    • 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 disclosure relates to a capacitor and a method for manufacturing the capacitor.
  • a capacitor according to a first aspect of the present disclosure includes a capacitor element and a terminal member connected to an electrode of the capacitor element.
  • the terminal member includes a connection terminal portion provided at an end of the terminal member and connectable to an external terminal.
  • the connection terminal portion includes a first terminal portion extending from the end of the terminal member and a second terminal portion superimposed on the first terminal portion.
  • a method for manufacturing a capacitor according to a second aspect of the present disclosure includes a step of manufacturing a terminal member and a step of connecting the terminal member to an electrode of a capacitor element.
  • the terminal member includes a connection terminal portion provided at an end of the terminal member and connectable to an external terminal.
  • the connection terminal portion includes a first terminal portion extending from the end portion and a second terminal portion superimposed on the first terminal portion.
  • the step of manufacturing the terminal member includes bending the first terminal portion and the second terminal portion in an unfolded state at a boundary between the first terminal portion and the second terminal portion, and overlapping the first terminal portion and the second terminal portion. Pressing the combined first terminal portion and second terminal portion in the thickness direction of the first terminal portion and the second terminal portion.
  • FIG. 1 is a perspective view of a film capacitor according to an embodiment.
  • FIG. 2 is a perspective view of the capacitor element unit and the case before the capacitor element unit is housed in the case according to the embodiment.
  • FIG. 3A is a perspective view of a 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 a main part of the first bus bar showing the periphery of the first rear connection terminal unit according to the embodiment.
  • FIG. 4B is a perspective view of a main part of the second bus bar showing the periphery of the second rear connection terminal unit according to the embodiment.
  • FIG. 5A is a cross-sectional view of a main part of the film capacitor showing the periphery of the first rear connection terminal of the first bus bar according to the embodiment.
  • FIG. 5B is a cross-sectional view of a main part of the film capacitor, showing the periphery of the second rear connection terminal of the second bus bar according to the embodiment.
  • FIG. 6 is a diagram illustrating a flow of a bus bar manufacturing process according to the embodiment.
  • FIG. 7 is a diagram for explaining a connection terminal portion bending step according to the embodiment.
  • FIG. 8A is a diagram for describing a connection terminal portion pressing step according to the embodiment.
  • FIG. 8B is a diagram for describing the connection terminal portion finishing step according to the embodiment.
  • FIG. 9A is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
  • FIG. 9B is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
  • FIG. 10A is a diagram for describing a first rear connection terminal portion and a second rear connection terminal portion according to a modification.
  • FIG. 10B is a diagram for describing a first rear connection terminal portion and a second rear connection terminal portion according to a modification.
  • FIG. 10C is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
  • FIG. 11A is a diagram illustrating a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
  • FIG. 11B is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
  • the external connection terminal has a smaller width in the direction perpendicular to the current flow than the main part on the capacitor element side of the bus bar, and the cross-sectional area in the width direction tends to be smaller even though the thickness is the same as the main part.
  • Electrical resistance tends to increase. For this reason, when the current flowing from the external device to the capacitor becomes large, the external connection terminals generate heat and easily become high in temperature. When the temperature of the external connection terminal becomes high, when the heat propagates to the capacitor element via the bus bar, there is a concern that the capacitor element may be thermally damaged.
  • a capacitor may be mounted on an inverter unit for driving an electric motor or the like. Power is supplied to the inverter unit from a power supply device. At this time, an external terminal connected to the power supply device is connected to an external connection terminal of the capacitor. In such a case, particularly, a large current easily flows from the power supply device to the capacitor, and the large current flows to easily generate heat at the external connection terminal. Thereby, thermal damage of the capacitor element is likely to occur.
  • the present disclosure provides a capacitor in which thermal damage to a capacitor element is less likely to occur.
  • a film capacitor 1 according to an embodiment of the capacitor of the present disclosure will be described with reference to the drawings.
  • the front, rear, left, right, and up and down directions are added to each drawing as appropriate. It should be noted that the directions shown in the drawings only indicate relative directions of the film capacitor 1, and do not indicate absolute directions.
  • the film capacitor 1 corresponds to the “capacitor” described in the claims.
  • the first end face electrode 410 and the second end face electrode 420 correspond to “electrodes” in the claims.
  • the first bus bar 500 and the second bus bar 600 correspond to “terminal members” described in claims.
  • the first rear connection terminal section 530 and the second rear connection terminal section 630 correspond to the “connection terminal section” described in the claims.
  • FIG. 1 is a perspective view of the film capacitor 1.
  • the film capacitor 1 includes a capacitor element unit 100, a case 200, and a filling resin 300.
  • the capacitor element unit 100 is housed in the case 200, and the case 200 is filled with the filling resin 300.
  • the filling resin 300 is a thermosetting resin, for example, an epoxy resin. Most of the capacitor element unit 100 buried in the filling resin 300 is protected from moisture and impact by the case 200 and the filling resin 300.
  • FIG. 2 is a perspective view of the capacitor element unit 100 and the case 200 before the capacitor element unit 100 is accommodated in the case 200.
  • FIG. 3A is a perspective view of the first bus bar 500
  • FIG. 3B is a perspective view of the second bus bar 600.
  • capacitor element unit 100 includes six capacitor elements 400, first bus bar 500, second bus bar 600, first insulating sheet 700, and second insulating sheet 800. including.
  • the capacitor element 400 is formed by stacking two metallized films obtained by evaporating aluminum on a dielectric film, winding or laminating the stacked metallized films, and pressing them flat.
  • the capacitor element 400 has a first end face electrode 410 formed on one end face by spraying a metal such as zinc, and a second end face electrode 420 formed on the other end face also by spraying a metal such as zinc. You.
  • the six capacitor elements 400 are arranged in two rows before and after the two end faces facing up and down, and three are arranged in each row. In this state, the first end face electrode 410 and the second end face of these capacitor elements 400 are arranged.
  • the first bus bar 500 and the second bus bar 600 are connected to the electrode 420, respectively.
  • the capacitor element 400 is formed of a metallized film obtained by evaporating aluminum on a dielectric film, but may be formed by metallizing other metals such as zinc and magnesium. It may be formed by a film. Alternatively, capacitor element 400 may be formed of a metallized film obtained by evaporating a plurality of metals among these metals, or may be formed of a metallized film obtained by evaporating an alloy of these metals. .
  • the first bus bar 500 is formed by appropriately cutting and bending a conductive material, for example, a copper plate, and includes a first main body portion 510, three first front connection terminal portions 520, and a first rear connection terminal portion 530. It has an integrated configuration.
  • the first main body 510 includes a terminal surface 510a and a front surface 510b.
  • the terminal surface portion 510a has a substantially rectangular shape with a portion near the right end of the rear end projecting slightly rearward, and covers the first end surface electrodes 410 of the six capacitor elements 400 from above.
  • the first electrode terminal 512 is formed on the terminal surface 510a at the front edge of the six openings 511 arranged in the left-right direction. In the terminal surface portion 510a, four first electrode terminals 512 are formed at the rear end, and three first electrode terminals 512 are formed at the right end.
  • first bus bar 500 is electrically connected to first end face electrodes 410 of six capacitor elements 400.
  • the front portion 510b has an elongated and substantially rectangular shape, and rises from the front edge of the terminal surface portion 510a. The upper end of the front part 510b is bent so as to protrude forward.
  • first main body 510 two circular communication holes 513 are formed in the terminal surface 510a.
  • the capacitor element 400 does not exist under the two flow holes 513.
  • an oval communication hole 514 is formed so as to straddle the terminal surface 510a and the front surface 510b.
  • the three first front connection terminal portions 520 are provided at the upper end of the front portion 510b so as to be arranged at equal intervals in the left-right direction.
  • the first front connection terminal portion 520 has a hook shape that extends upward and then bends and extends forward.
  • a circular through-hole 522 is formed in the first front connection terminal portion 520 on the tip side with respect to the bent portion 521.
  • the first rear connection terminal portion 530 is provided at the rear end of the terminal surface portion 510a, which is the rear end of the first bus bar 500.
  • the first rear connection terminal portion 530 has a hook shape that is bent upward after extending upward and extends rearward.
  • a circular through-hole 532 is formed in the first rear connection terminal portion 530 on the distal end side of the bent portion 531. The detailed configuration of the first rear connection terminal unit 530 will be described later.
  • the second bus bar 600 is formed by appropriately cutting and bending a conductive material, for example, a copper plate, and includes a second main body 610, three second front connection terminal portions 620, and a second rear connection terminal portion 630. It has an integrated configuration.
  • the second main body 610 includes a terminal surface 610a, a front surface 610b, and a rear surface 610c.
  • the terminal surface portion 610a has a substantially rectangular shape, and covers the second end surface electrodes 420 of the six capacitor elements 400 from below.
  • a total of twelve openings 611 are formed in the terminal surface part 610a, two in the front-rear direction and six in the left-right direction, and a second electrode terminal 612 is formed at the front edge of each opening 611.
  • Two second electrode terminals 612 are in contact with the second end surface electrode 420 of each capacitor element 400, and these second electrode terminals 612 are joined to the second end surface electrode 420 by a joining method such as soldering.
  • the second bus bar 600 is electrically connected to the second end surface electrodes 420 of the six capacitor elements 400.
  • the front portion 610b has a rectangular shape with a high height on the left side and a rectangular shape with a low height on the right side, and rises from the front edge of the terminal surface portion 610a.
  • the upper end of the left part of the front part 610b is bent so as to protrude forward.
  • the rear surface portion 610c has a rectangular shape, and rises from the rear edge of the terminal surface portion 610a.
  • two circular communication holes 613 are formed in the terminal surface 610a.
  • the capacitor element 400 does not exist on the two flow holes 613.
  • two oblong communication holes 614 are formed so as to straddle the terminal surface 610a and the front surface 610b.
  • FIG. 3B the front six openings 611, the second electrode terminal 612, and the left circulation hole 613 are hidden by the front part 610b.
  • the three second front connection terminal portions 620 are provided at the upper end of the left portion of the front surface portion 610b so as to be arranged at equal intervals in the left-right direction.
  • the second front connection terminal portion 620 has a hook shape that extends upward and then bends and extends forward.
  • a circular through hole 622 is formed in the second front connection terminal portion 620 on the tip side with respect to the bent portion 621.
  • the second rear connection terminal portion 630 is provided at the upper end of the rear surface portion 610c, which is the rear end of the second bus bar 600.
  • the second rear connection terminal portion 630 has a hook shape that extends upward and then bends and extends rearward.
  • a circular through hole 632 is formed in the second rear connection terminal portion 630 on the tip side with respect to the bent portion 631. The detailed configuration of the second rear connection terminal section 630 will be described later.
  • first front connection terminal portions 520 and three second front connection terminal portions 620 are alternately arranged in the left-right direction. Further, on the rear side of the capacitor element unit 100, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are arranged in the left-right direction.
  • the first insulating sheet 700 is disposed between the front part 510b of the first bus bar 500 and the front part 610b of the second bus bar 600. Further, a second insulating sheet 800 is disposed between the second rear connection terminal portion 630 of the second bus bar 600 and the capacitor element 400.
  • the first insulating sheet 700 and the second insulating sheet 800 are formed of insulating paper, or an electrically insulating resin material such as acrylic or silicon.
  • the first insulation sheet 700 secures an insulation distance between the first bus bar 500 and the second bus bar 600
  • the second insulation sheet 800 secures the second rear connection terminal portion 630 of the second bus bar 600 and the first of the capacitor element 400. An insulation distance with the end face electrode 410 is ensured.
  • the case 200 is made of a resin, and is made of, for example, polyphenylene sulfide (PPS) which is a thermoplastic resin.
  • the case 200 is formed in a substantially rectangular parallelepiped box shape, has a bottom wall 201, a front side wall 202, a rear side wall 203, a left side wall 204, and a right side wall 205 rising from the bottom wall 201, and has an open upper surface.
  • PPS polyphenylene sulfide
  • a mounting tab 210 is provided on the upper part of the left side wall 204 and the right side wall 205.
  • the mounting tab 210 has the same width as the left side wall 204 and the right side wall 205.
  • the front side wall 202 and the rear side wall 203 extend to the front ends of the left and right mounting tabs 210.
  • An insertion hole 211 is formed in the mounting tab 210.
  • a metal collar 212 is fitted into the insertion hole 211 to increase the strength of the hole.
  • a mounting boss 220 extending downward is formed on the back side of the center of the left and right mounting tabs 210.
  • a nut (not shown) is embedded in the mounting boss 220. In FIG. 2, only the right mounting boss 220 is illustrated.
  • a mounting tab 230 is formed on the front side wall 202 at an upper portion near the right end. Each mounting tab 230 has an insertion hole 231 formed therein. A metal collar 232 is fitted into the insertion hole 231 to increase the strength of the hole. Further, four mounting bosses 240 are formed in the lower portion of the front wall 202 so as to be arranged in the left-right direction. A nut 241 is embedded in the mounting boss 240.
  • mounting tabs 210, 230 and mounting bosses 220, 240 are used when the film capacitor 1 is fixed to an installation portion of an external device such as an inverter unit.
  • the capacitor element unit 100 is housed in the case 200, and the filling resin 300 in a molten state is injected into the case 200. At this time, the filled resin 300 passes through the flow holes 513 and 514 of the first bus bar 500 and the flow holes 613 and 614 of the second bus bar 600, so that the filled resin 300 can easily spread between the six capacitor elements 400.
  • the case 200 is filled with the filling resin 300 up to the vicinity of the opening 200a, and when the filling of the filling resin 300 is completed, the case 200 is heated. Thereby, the filling resin 300 in the case 200 is cured.
  • the film capacitor 1 is completed as shown in FIG.
  • the three first front connection terminal portions 520, the three second front connection terminal portions 620, the first rear connection terminal portion 530, and the second rear connection terminal portion 630 are exposed from the filled resin 300 filled in the case 200. .
  • FIG. 4A is a perspective view of a main portion of the first bus bar 500 showing the periphery of the first rear connection terminal portion 530
  • FIG. 4B is a second bus bar showing the periphery of the second rear connection terminal portion 630
  • FIG. 5A is a cross-sectional view of a main part of the film capacitor 1 showing the periphery of the first rear connection terminal portion 530 of the first bus bar 500
  • FIG. 5B is the periphery of the second rear connection terminal portion 630 of the second bus bar 600.
  • FIG. 2 is a cross-sectional view of a main part of the film capacitor 1 showing the above.
  • the first rear connection terminal portion 530 overlaps the hook-shaped first terminal portion 530a extending from the rear end portion of the first main body portion 510 and the first terminal portion 530a by being folded back from the front end of the first terminal portion 530a. And a hook-shaped second terminal portion 530b.
  • the second rear connection terminal portion 630 has a hook-shaped first terminal portion 630a extending from the upper end of the rear surface portion 610c of the second main body portion 610, and is folded back from the tip of the first terminal portion 630a to be the first terminal portion. And a hook-shaped second terminal portion 630b superposed on the terminal portion 630a.
  • the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are formed of the same material (copper plate), and the thickness of the overlapping portion, that is, the thickness of the second terminal portions 530b and 630b and the first terminal portion
  • the portions where the second terminal portions 530b and 630b overlap in 530a and 630a have the same thickness.
  • the thickness of the portion where the second terminal portions 530b and 630b overlap in the first terminal portions 530a and 630a is smaller than the thickness of the portion where the second terminal portions 530b and 630b do not overlap in the first terminal portions 530a and 630a.
  • the thickness of the second rear connection terminal portion 630 is equal to that of the second main body portion 610. It is larger (almost twice) than the thickness.
  • the first rear connection terminal portion 530 is included in a portion where the bent portion 531 overlaps the first terminal portion 530a and the second terminal portion 530b.
  • the first terminal 530a and the second terminal 530b are rivets 533 at a portion opposite to the bent portion of the second terminal 530b (the end of the first connection terminal 530). Are joined. Holes 534a and 534b through which the rivets 533 pass are formed in the first terminal portion 530a and the second terminal portion 530b.
  • the bent portion 631 of the second rear connection terminal portion 630 is included in a portion where the first terminal portion 630a and the second terminal portion 630b overlap.
  • first terminal portion 630a and the second terminal portion 630b are rivet 633 at a portion opposite to the bent portion of the second terminal portion 630b (the tip portion of the second rear connection terminal portion 630) with respect to the bent portion 631. Are joined. Holes 634a and 634b through which the rivets 633 pass are formed in the first terminal portion 630a and the second terminal portion 630b.
  • the through hole 532 of the first rear connection terminal portion 530 includes a first hole 532a formed in the first terminal portion 530a and a second hole 532b formed in the second terminal portion 530b and aligned with the first hole 532a. Is done.
  • the diameter of the first hole 532a is the same as the diameter of the second hole 532b.
  • the through hole 632 of the second rear connection terminal portion 630 is formed in the first hole 632a and the second terminal portion 630b formed in the first terminal portion 630a, and the second hole 632b is aligned with the first hole 632a. It is composed of
  • the diameter of the first hole 632a is the same as the diameter of the second hole 632b.
  • Right and left corners 535, 635 of the distal end portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are rounded by R processing.
  • the left and right corners may be chamfered (C-plane cut) instead of the R-process.
  • the first rear connection terminal portion 530 has an end opposite to the distal end side of the first rear connection terminal portion 530 in a portion where the first terminal portion 530a and the second terminal portion 530b overlap. It is buried in the filling resin 300.
  • the second rear connection terminal portion 630 is located on the side opposite to the tip end side of the second rear connection terminal portion 630 in a portion where the first terminal portion 630a and the second terminal portion 630b overlap. The end is buried in the filling resin 300.
  • FIG. 6 is a diagram showing the flow of the bus bar manufacturing process.
  • FIG. 7 is a diagram for explaining the connection terminal portion bending step.
  • FIG. 8A is a diagram for explaining a connection terminal portion pressing step, and
  • FIG. 8B is a diagram for explaining a connection terminal portion finishing step.
  • a bus bar manufacturing process for manufacturing the first bus bar 500 and the second bus bar 600 includes a die cutting process, a connection terminal portion bending process, a connection terminal portion pressing process, and a connection terminal portion finishing process. And an entire bending step.
  • a die cutting step is performed (S1).
  • a plate material (copper plate) is punched out using a die having the shape of the first bus bar 500, and the first bus bar 500 in an expanded state is cut out.
  • a connecting terminal portion bending step is performed (S2). As shown in FIG. 7, in the connecting terminal portion bending step, in the first bus bar 500 in the unfolded state, the second terminal portion 530b is bent at the boundary with the first terminal portion 530a and overlapped with the first terminal portion 530a. You.
  • connection terminal portion pressing step is performed (S3).
  • the connection terminal portion pressing step the first terminal portion 530a and the second terminal portion 530b that are superimposed are pressed in the thickness direction thereof and crushed. Thereby, the mutually opposing surfaces of the first terminal portion 530a and the second terminal portion 530b are firmly adhered.
  • connection terminal part finishing step is performed (S4).
  • a connection terminal part finishing step first, a first hole 532a is opened in the first terminal part 530a, and a second hole 532b is opened in the second terminal part 530b, so that the first post-connection is performed.
  • a through hole 532 is formed in the terminal portion 530.
  • holes 534a and 534b through which the rivet 533 passes are formed in the first terminal portion 530a and the second terminal portion 530b.
  • the portion protruding left and right beyond the base end of the first terminal portion 530a by being crushed by a press is shaved off, and the right and left corners 535 of the front end portion of the first rear connection terminal portion 530 are rounded. Is applied.
  • the entire bending step is performed (S5).
  • the first rear connection terminal portion 530 is bent so as to have a final shape
  • the first main body portion 510 and the first front connection terminal portion 520 are bent so as to have a final shape.
  • the first terminal portion 530a and the second terminal portion 530b of the first rear connection terminal portion 530 are joined by rivets 533.
  • the film capacitor 1 can be mounted on, for example, an inverter unit for driving an electric motor in an electric vehicle. Power is supplied to the inverter unit from a power supply device (battery).
  • the external terminals (not shown) connected to the power supply device use the through holes 532 and 632 in the first rear connection terminal portion 530 of the first bus bar 500 and the second rear connection terminal portion 630 of the second bus bar 600. It is connected by a screw.
  • through holes 522 and 622 are used for the first front connection terminal portion 520 of the first bus bar 500 and the second front connection terminal portion 620 of the second bus bar 600. Connected by screwing.
  • the first rear connection terminal portion 530 has a smaller width in the direction (left-right direction) orthogonal to the current flow than the first main body portion 510 of the first bus bar 500, but the first terminal portion 530a The thickness is made larger than that of the first main body 510 due to the structure in which the first main body 510 and the second terminal 530b overlap.
  • the first rear connection terminal portion 530 has a larger cross-sectional area in a direction (left-right direction) orthogonal to the current flow, and thus has a lower electric resistance. Therefore, heat generation at the first rear connection terminal portion 530 when a large current flows is reduced.
  • the second rear connection terminal portion 630 also has a smaller width in the direction (left-right direction) orthogonal to the current flow than the second main body portion 610 of the second bus bar 600, but has the first terminal portion 630a and the second Due to the structure in which the terminal portion 630b overlaps, the thickness is made larger than that of the second main body portion 610. Therefore, heat generation at the second rear connection terminal portion 630 when a large current flows is reduced.
  • first rear connection terminal portion 530 and a second rear connection terminal portion 630 that can be connected to external terminals are provided, and these connection terminal portions 530, 630 It includes first terminal portions 530a, 630a extending from the ends of the first bus bar 500 and the second bus bar 600, and second terminal portions 530b, 630b superimposed on the first terminal portions 530a, 630a.
  • the thickness of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 increases, the cross-sectional area in the direction (left-right direction) orthogonal to the current flow increases, and the electric resistance decreases. Become. Thereby, the heat generation of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 when the current flows can be reduced, so that the heat damage of the capacitor element 400 due to the propagation of the heat to the capacitor element 400 can be reduced. Can be prevented.
  • first rear connection terminal portion 530 and the second rear connection terminal portion 630 have through holes 532, 632, and the through holes 532, 632 are formed in the first holes 532a formed in the first terminal portions 530a, 630a.
  • the diameter of one hole is set to a size necessary for connection of an external terminal, and the diameter of the other hole is larger than that. Will be.
  • the cross-sectional area of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 is reduced in the portions of the through holes 532 and 632 by the size of one of the holes, and the electric resistance is increased.
  • the diameters of the first holes 532a, 632a and the second holes 532b, 632b are the same, the diameters of the first holes 532a, 632a and the second holes 532b, 632b are set to the external terminal. Can be adjusted to the size required for connection. Therefore, the cross-sectional areas of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 at the through holes 532 and 632 are not reduced, and the electric resistance is not increased.
  • the second terminal portions 530b, 630b are folded from the ends of the first terminal portions 530a, 630a and overlap the first terminal portions 530a, 630a.
  • the second terminal portions 530b and 630b do not need to be formed separately from the first bus bar 500 and the second bus bar 600 including the first terminal portions 530a and 630a, the first bus bar 500 and the second bus bar 600 can be easily manufactured.
  • first rear connection terminal portion 530 and the second rear connection terminal portion 630 have bent portions 531 and 631, and the bent portion 531 is formed at a portion where the first terminal portions 530a and 630a and the second terminal portions 530b and 630b overlap. , 631 are included.
  • the bent portions 531 and 631 are increased by increasing the thickness of the bent portions 531 and 631, the bent portions 531 and 631 of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are increased.
  • the tip side is less likely to be deformed.
  • first terminal portions 530a and 630a are located on the opposite side of the bent portions 531 and 631 of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 from the bent portions of the second terminal portions 530b and 630b. And the second terminal portions 530b, 630b are joined by rivets 533, 633.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are easily opened because the second terminal portions 530b, 630b are separated from the folded portions, the bent portions 531, 631 are formed.
  • the portions that are more likely to open are joined by the rivets 533, 633, so that the adhesion between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b at these portions can be increased.
  • first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed by a first rear connection terminal portion 530 and a second rear connection portion 530a in a portion where the first terminal portions 530a, 630a and the second terminal portions 530b, 630b overlap.
  • the end of the connection terminal 630 opposite to the tip end is buried in the filling resin 300 filled in the case 200.
  • the base portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 which have become heavy due to the increase in thickness, can be firmly supported by the filling resin 300.
  • the connection terminal portion 530 and the second rear connection terminal portion 630 are not easily deformed, and the positions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 can be maintained with high accuracy.
  • first bus bar 500 and the second bus bar 600 bend the first terminal portions 530a, 630a and the second terminal portions 530b, 630b in the unfolded state at their boundaries, and overlap the first and second bus bars. It is manufactured by a bus bar manufacturing process including a process of pressing the first terminal portions 530a and 630a and the second terminal portions 530b and 630b in their thickness direction.
  • the second terminal portions 530b and 630b include the first terminal portions 530a and 630a.
  • the first bus bar 500 and the second bus bar 600 do not have to be formed separately from the first bus bar 500 and the second bus bar 600, and the first bus bar 500 and the second bus bar 600 can be easily manufactured.
  • the adhesion between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b is improved. Enhanced. As a result, a gap is formed between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b (adhesion is deteriorated), and the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 is increased. Can be prevented from becoming large. Furthermore, when the filling resin 300 enters between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 increases. Can be prevented.
  • the first terminal portion 530a and the second terminal portion 530b of the first rear connection terminal portion 530 are joined by the rivets 533.
  • the first terminal portion 630a and the second terminal portion 630b of the second rear connection terminal portion 630 are joined by rivets 633.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by another joining method.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by crimping. In this case, as shown in FIG.
  • protrusions 537, 637 are formed on the second terminal portions 530b, 630b, and the protrusions 537, 637 are passed through holes 538, 638 formed on the first terminal portions 530a, 630a.
  • a crimped structure that can be crushed (caulked) can be employed.
  • the protrusions 537 and 637 may be formed on the first terminal portions 530a and 630a, and the holes 538 and 638 may be formed on the second terminal portions 530b and 630b. Further, for example, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by soldering. In this case, as shown in FIG.
  • the solder sheet S is sandwiched between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b. Then, after the solder sheet S is heated and melted and then solidified again, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are joined. Further, for example, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by welding such as spot welding. When the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are joined by soldering or welding, the whole of the overlapping portion of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b. Soldering or welding may be applied.
  • the second terminal portions 530b, 630b are formed of the same material as the first terminal portions 530a, 630a, and are folded back at the distal ends of the first terminal portions 530a, 630a. , 630a.
  • the second terminal portions 530b and 630b are formed separately from the first terminal portions 530a and 630a, and are overlapped and joined to the first terminal portions 530a and 630a.
  • Such a configuration may be adopted.
  • the thickness of the first terminal portions 530a and 630a and the thickness of the second terminal portions 530b and 630b in the overlapping portion may be the same.
  • the thickness of the first terminal portions 530a and 630a in the overlapping portion and the thickness of the second terminal portions 530b and 630b may be different.
  • the thickness of the second terminal portions 530b, 630b may be larger than the thickness of the first terminal portions 530a, 630a, as shown in FIG. 10B.
  • the thickness of the first bus bar 500 and the second bus bar 600 is increased because the thickness of the first main body 510 and the second main body 610 integrated with the first terminal portions 530a and 630a does not increase. It is unlikely to increase.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are separated from each other, as shown in FIGS.
  • the first terminal portions 530a, 630a and the second terminal It is preferable that the entirety of the overlapping portions of the portions 530b and 630b be soldered with the solder sheet S. Also, welding may be performed instead of soldering. Furthermore, in order to join the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, riveting or crimping is performed on the distal end side and the base end side with the bent portions 531, 631 interposed therebetween. Good.
  • first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed with through holes 532 and 632 used for connection with external terminals.
  • cutout portions 539 and 639 used for connection with external terminals may be formed in first rear connection terminal portion 530 and second rear connection terminal portion 630.
  • the shapes of the notches 539 and 639 correspond to the external terminals to be connected, and are, for example, U-shaped.
  • the cutouts 539, 639 are constituted by first cutouts 539a, 639a formed in the first terminals 530a, 630a and second cutouts 539b, 639b formed in the second terminals 530b, 630b.
  • first notches 539a and 639a and the second notches 539b and 639b have the same size (width of the notch, depth of the notch, and the like).
  • first rear connection terminal portion 530 and the second rear connection terminal portion 530 are formed at the cutout portions 539 and 639, similarly to the case where the first holes 532a and 632a and the second holes 532b and 632b have the same diameter. It is possible to prevent the cross-sectional area of the rear connection terminal portion 630 from being reduced and the electric resistance from being increased.
  • the cutouts 539, 639 can be formed in the connection terminal part finishing step of the bus bar manufacturing step, similarly to the through holes 532, 632.
  • the left and right widths of the first terminal portions 530a and 630a are the same as the left and right widths of the second terminal portions 530b and 630b, and both end portions are aligned.
  • both ends of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b such as making one of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b wider than the other. May not be complete.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are separate bodies, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are not aligned. Is also good.
  • the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are superimposed at the distal ends of the first rear connection terminal portion 530 and the second rear connection terminal portion 630.
  • the left and right corners 535 and 635 were rounded.
  • R is formed at the left and right corners 535 (635) when these are overlapped at the boundary between the first terminal portion 530a (630a) and the second terminal portion 530b (630b).
  • a configuration in which the notch 535a (635a) is formed as described above may be adopted. Note that the notch 535a (635a) may form a C-cut shape when the first terminal 530a (630a) and the second terminal 530b (630b) are overlapped.
  • the first holes 532a, 632a and second holes 532b, 632b, and holes 534a, 634a, 534b, 634b through which rivets 533, 633 pass are opened.
  • the first terminal portion 530a (630a) and the second terminal portion 530b (630b) are provided with the first hole 532a (632a) and the second hole 532b (632b) before they are overlapped.
  • the first notches 539a, 639a and the second notches 539b, 639b of FIG. , 630b may be opened before they are overlaid.
  • one of the first notches 539a and 639a and the second notches 539b and 639b may be larger than the other.
  • the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are configured such that the second terminal portions 530b and 630b are folded back from the ends of the first terminal portions 530a and 630a. 530a and 630a.
  • the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed by folding the second terminal portions 530b, 630b from the left end or the right end of the first terminal portions 530a, 630a to form the first terminal portions 530a, 630a. It may be configured to be overlapped.
  • the first front connection terminal portion 520 of the first bus bar 500 and the second front connection terminal portion 620 of the second bus bar 600 also have a configuration in which the first terminal portion and the second terminal portion are overlapped. As a result, the thickness (cross-sectional area) may be increased.
  • the capacitor element unit 100 includes six capacitor elements 400.
  • the number of the capacitor elements 400 can be changed as appropriate, including the case where the number is one.
  • the capacitor element 400 is formed by stacking two metalized films obtained by evaporating aluminum on a dielectric film, and winding or laminating the stacked metalized films.
  • these capacitor elements 400 may be formed by laminating a metallized film obtained by evaporating aluminum on both surfaces of a dielectric film and an insulating film, and winding or laminating this.
  • the film capacitor 1 has been described as an example of the capacitor of the present disclosure.
  • the present disclosure can be applied to capacitors other than the film capacitor 1.
  • the present disclosure is useful for capacitors used in various electronic devices, electric devices, industrial devices, vehicle electrical devices, and the like.
  • First end face electrode (electrode) 420 second end face electrode (electrode) 500 1st bus bar (terminal member) 520 first front connection terminal portion 521 bent portion 522 through hole 530 first rear connection terminal portion (connection terminal portion) 530a first terminal portion 530b second terminal portion 531 bent portion 532 through hole 532a first hole 532b second hole 533 rivet 535a cutout portion 539 cutout portion 539a first cutout portion 539b second cutout portion 600 second bus bar (terminal member) 620 second front connection terminal portion 621 bent portion 622 through hole 630 second rear connection terminal portion (connection terminal portion) 630a first terminal portion 630b second terminal portion 631 bent portion 632 through hole 632a first hole 632b second hole 633 rivet 639 cutout portion 639a first cutout portion 639b second cutout portion

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Abstract

This capacitor is provided with a capacitor element and a terminal member that is connected to an electrode of the capacitor element. The terminal member comprises a connection terminal part which is provided at an end of the terminal member, and which is able to be connected to an external terminal. The connection terminal part comprises a first terminal part which extends beyond the end of the terminal member and a second terminal part which is superposed on the first terminal part.

Description

コンデンサおよびコンデンサの製造方法Capacitor and method of manufacturing capacitor
　本開示は、コンデンサおよびコンデンサの製造方法に関する。 The present disclosure relates to a capacitor and a method for manufacturing the capacitor.
　従来、バスバーの一端が接続されたコンデンサ素子をケース内に収納し、バスバーの他端に設けられた外部接続用の端子をケースの開口から外部へ引き出すようにしたコンデンサが知られている（たとえば、特許文献１参照）。外部接続用の端子は、バスバーの端部から延び出すように設けられ、当該端子に外部装置に設けられた外部端子が接続される。 2. Description of the Related Art Conventionally, there has been known a capacitor in which a capacitor element to which one end of a bus bar is connected is housed in a case, and a terminal for external connection provided at the other end of the bus bar is pulled out from an opening of the case (for example, see, for example) And Patent Document 1). The external connection terminal is provided so as to extend from the end of the bus bar, and the external terminal provided in the external device is connected to the terminal.
特開２００９－２５２９３５号公報JP 2009-252935 A
　本開示の第１の態様に係るコンデンサは、コンデンサ素子と、前記コンデンサ素子の電極に接続される端子部材と、を備える。ここで、前記端子部材は、前記端子部材の端部に設けられ、外部端子に接続可能な接続端子部を含む。前記接続端子部は、前記端子部材の前記端部から延び出す第１端子部と当該第１端子部に重ね合される第２端子部とを含む。 コ ン デ ン サ A capacitor according to a first aspect of the present disclosure includes a capacitor element and a terminal member connected to an electrode of the capacitor element. Here, the terminal member includes a connection terminal portion provided at an end of the terminal member and connectable to an external terminal. The connection terminal portion includes a first terminal portion extending from the end of the terminal member and a second terminal portion superimposed on the first terminal portion.
　本開示の第２の態様に係るコンデンサの製造方法は、端子部材を製造する工程と、前記端子部材をコンデンサ素子の電極に接続する工程と、を含む。前記端子部材は、前記端子部材の端部に設けられ、外部端子に接続可能な接続端子部を含む。前記接続端子部は、前記端部から延び出す第１端子部と当該第１端子部に重ね合される第２端子部とを含む。前記端子部材を製造する工程は、展開状態の前記第１端子部と前記第２端子部とを、前記第１端子部と前記第２端子部の間の境界で折り曲げて重ね合せる工程と、重ね合された前記第１端子部と前記第２端子部とを、前記第１端子部および前記第２端子部の厚み方向にプレスする工程と、を含む。 コ ン デ ン サ A method for manufacturing a capacitor according to a second aspect of the present disclosure includes a step of manufacturing a terminal member and a step of connecting the terminal member to an electrode of a capacitor element. The terminal member includes a connection terminal portion provided at an end of the terminal member and connectable to an external terminal. The connection terminal portion includes a first terminal portion extending from the end portion and a second terminal portion superimposed on the first terminal portion. The step of manufacturing the terminal member includes bending the first terminal portion and the second terminal portion in an unfolded state at a boundary between the first terminal portion and the second terminal portion, and overlapping the first terminal portion and the second terminal portion. Pressing the combined first terminal portion and second terminal portion in the thickness direction of the first terminal portion and the second terminal portion.
　本開示によれば、コンデンサ素子の熱損傷が生じにくいコンデンサを提供できる。 According to the present disclosure, it is possible to provide a capacitor that is less likely to cause thermal damage to the capacitor element.
　本開示の効果ないし意義は、以下に示す実施の形態の説明により更に明らかとなろう。ただし、以下に示す実施の形態は、あくまでも、本開示を実施化する際の一つの例示であって、本開示は、以下の実施の形態に記載されたものに何ら制限されるものではない。 効果 The effects or significance of the present disclosure will be more apparent from the following description of the embodiments. However, the embodiment described below is merely an example when embodying the present disclosure, and the present disclosure is not limited to what is described in the following embodiment.
図１は、実施の形態に係る、フィルムコンデンサの斜視図である。FIG. 1 is a perspective view of a film capacitor according to an embodiment. 図２は、実施の形態に係る、コンデンサ素子ユニットがケース内に収容される前のコンデンサ素子ユニットおよびケースの斜視図である。FIG. 2 is a perspective view of the capacitor element unit and the case before the capacitor element unit is housed in the case according to the embodiment. 図３Ａは、実施の形態に係る、第１バスバーの斜視図である。FIG. 3A is a perspective view of a first bus bar according to the embodiment. 図３Ｂは、実施の形態に係る、第２バスバーの斜視図である。FIG. 3B is a perspective view of the second bus bar according to the embodiment. 図４Ａは、実施の形態に係る、第１後接続端子部の周辺が示された第１バスバーの要部の斜視図である。FIG. 4A is a perspective view of a main part of the first bus bar showing the periphery of the first rear connection terminal unit according to the embodiment. 図４Ｂは、実施の形態に係る、第２後接続端子部の周辺が示された第２バスバーの要部の斜視図である。FIG. 4B is a perspective view of a main part of the second bus bar showing the periphery of the second rear connection terminal unit according to the embodiment. 図５Ａは、実施の形態に係る、第１バスバーの第１後接続端子部の周辺を示すフィルムコンデンサの要部の断面図である。FIG. 5A is a cross-sectional view of a main part of the film capacitor showing the periphery of the first rear connection terminal of the first bus bar according to the embodiment. 図５Ｂは、実施の形態に係る、第２バスバーの第２後接続端子部の周辺を示すフィルムコンデンサの要部の断面図である。FIG. 5B is a cross-sectional view of a main part of the film capacitor, showing the periphery of the second rear connection terminal of the second bus bar according to the embodiment. 図６は、実施の形態に係る、バスバー製造工程の流れを示す図である。FIG. 6 is a diagram illustrating a flow of a bus bar manufacturing process according to the embodiment. 図７は、実施の形態に係る、接続端子部折り曲げ工程について説明するための図である。FIG. 7 is a diagram for explaining a connection terminal portion bending step according to the embodiment. 図８Ａは、実施の形態に係る、接続端子部プレス工程について説明するための図である。FIG. 8A is a diagram for describing a connection terminal portion pressing step according to the embodiment. 図８Ｂは、実施の形態に係る、接続端子部仕上げ工程について説明するための図である。FIG. 8B is a diagram for describing the connection terminal portion finishing step according to the embodiment. 図９Ａは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 9A is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification. 図９Ｂは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 9B is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification. 図１０Ａは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 10A is a diagram for describing a first rear connection terminal portion and a second rear connection terminal portion according to a modification. 図１０Ｂは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 10B is a diagram for describing a first rear connection terminal portion and a second rear connection terminal portion according to a modification. 図１０Ｃは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 10C is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification. 図１１Ａは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 11A is a diagram illustrating a first rear connection terminal unit and a second rear connection terminal unit according to a modification. 図１１Ｂは、変更例に係る、第１後接続端子部および第２後接続端子部について説明するための図である。FIG. 11B is a diagram for describing a first rear connection terminal unit and a second rear connection terminal unit according to a modification.
　実施形態の説明に先立ち、従来の技術における問題点について簡単に説明する。外部接続用の端子は、バスバーにおけるコンデンサ素子側の本体部分に比べて電流の流れに直交する方向の幅が小さくなりやすく、本体部分と厚みは同じでもその幅方向の断面積が小さくなりやすいので、電気抵抗が大きくなりやすい。このため、外部装置からコンデンサに流れる電流が大きくなった場合に、外部接続用の端子が発熱して高温になりやすい。外部接続用の端子が高温となった場合、その熱がバスバーを介してコンデンサ素子に伝播すると、コンデンサ素子が熱損傷を受けてしまうことが懸念される。 Prior to the description of the embodiments, problems in the conventional technology will be briefly described. The external connection terminal has a smaller width in the direction perpendicular to the current flow than the main part on the capacitor element side of the bus bar, and the cross-sectional area in the width direction tends to be smaller even though the thickness is the same as the main part. , Electrical resistance tends to increase. For this reason, when the current flowing from the external device to the capacitor becomes large, the external connection terminals generate heat and easily become high in temperature. When the temperature of the external connection terminal becomes high, when the heat propagates to the capacitor element via the bus bar, there is a concern that the capacitor element may be thermally damaged.
　近年、電気自動車の普及に伴い、電気自動車へのコンデンサの使用が始められている。たとえば、電気モータ等を駆動するためのインバータユニットにコンデンサが搭載され得る。インバータユニットには電源装置から電力が供給され、このとき、電源装置に繋がる外部端子がコンデンサの外部接続用の端子に接続される。このような場合、特に、電源装置からコンデンサに大きな電流が流れやすく、大電流が流れることにより外部接続用の端子に発熱が生じやすくなる。これにより、コンデンサ素子の熱損傷が生じやすくなる。 In recent years, with the spread of electric vehicles, the use of capacitors in electric vehicles has begun. For example, a capacitor may be mounted on an inverter unit for driving an electric motor or the like. Power is supplied to the inverter unit from a power supply device. At this time, an external terminal connected to the power supply device is connected to an external connection terminal of the capacitor. In such a case, particularly, a large current easily flows from the power supply device to the capacitor, and the large current flows to easily generate heat at the external connection terminal. Thereby, thermal damage of the capacitor element is likely to occur.
　かかる課題に鑑み、本開示は、コンデンサ素子の熱損傷が生じにくいコンデンサを提供する。 In view of such a problem, the present disclosure provides a capacitor in which thermal damage to a capacitor element is less likely to occur.
　以下、本開示のコンデンサの一実施形態であるフィルムコンデンサ１について図を参照して説明する。便宜上、各図には、適宜、前後、左右および上下の方向が付記されている。なお、図示の方向は、あくまでフィルムコンデンサ１の相対的な方向を示すものであり、絶対的な方向を示すものではない。 Hereinafter, a film capacitor 1 according to an embodiment of the capacitor of the present disclosure will be described with reference to the drawings. For convenience, the front, rear, left, right, and up and down directions are added to each drawing as appropriate. It should be noted that the directions shown in the drawings only indicate relative directions of the film capacitor 1, and do not indicate absolute directions.
　本実施の形態において、フィルムコンデンサ１が、請求の範囲に記載の「コンデンサ」に対応する。また、第１端面電極４１０および第２端面電極４２０が、請求の範囲に記載の「電極」に対応する。さらに、第１バスバー５００および第２バスバー６００が、請求の範囲に記載の「端子部材」に対応する。さらに、第１後接続端子部５３０および第２後接続端子部６３０が、請求の範囲に記載の「接続端子部」に対応する。 に お い て In the present embodiment, the film capacitor 1 corresponds to the “capacitor” described in the claims. In addition, the first end face electrode 410 and the second end face electrode 420 correspond to “electrodes” in the claims. Further, the first bus bar 500 and the second bus bar 600 correspond to “terminal members” described in claims. Further, the first rear connection terminal section 530 and the second rear connection terminal section 630 correspond to the “connection terminal section” described in the claims.
　ただし、上記記載は、あくまで、請求の範囲の構成と実施形態の構成とを対応付けることを目的とするものであって、上記対応付けによって請求の範囲に記載の開示が実施形態の構成に何ら限定されるものではない。 However, the above description is intended only to associate the configuration of the claims with the configuration of the embodiment, and the disclosure described in the claims is not limited to the configuration of the embodiment by the association. It is not something to be done.
　図１は、フィルムコンデンサ１の斜視図である。 FIG. 1 is a perspective view of the film capacitor 1.
　図１を参照し、フィルムコンデンサ１は、コンデンサ素子ユニット１００と、ケース２００と、充填樹脂３００とを備える。コンデンサ素子ユニット１００がケース２００内に収容され、ケース２００内に充填樹脂３００が充填される。充填樹脂３００は、熱硬化性樹脂、たとえば、エポキシ樹脂である。コンデンサ素子ユニット１００の充填樹脂３００に埋没した大部分が、ケース２００および充填樹脂３００によって湿気や衝撃から保護される。 参照 Referring to FIG. 1, the film capacitor 1 includes a capacitor element unit 100, a case 200, and a filling resin 300. The capacitor element unit 100 is housed in the case 200, and the case 200 is filled with the filling resin 300. The filling resin 300 is a thermosetting resin, for example, an epoxy resin. Most of the capacitor element unit 100 buried in the filling resin 300 is protected from moisture and impact by the case 200 and the filling resin 300.
　図２は、コンデンサ素子ユニット１００がケース２００内に収容される前のコンデンサ素子ユニット１００およびケース２００の斜視図である。図３Ａは、第１バスバー５００の斜視図であり、図３Ｂは、第２バスバー６００の斜視図である。 FIG. 2 is a perspective view of the capacitor element unit 100 and the case 200 before the capacitor element unit 100 is accommodated in the case 200. FIG. 3A is a perspective view of the first bus bar 500, and FIG. 3B is a perspective view of the second bus bar 600.
　図２、図３Ａおよび図３Ｂを参照し、コンデンサ素子ユニット１００は、６つのコンデンサ素子４００と、第１バスバー５００と、第２バスバー６００と、第１絶縁シート７００と、第２絶縁シート８００とを含む。 Referring to FIGS. 2, 3A and 3B, capacitor element unit 100 includes six capacitor elements 400, first bus bar 500, second bus bar 600, first insulating sheet 700, and second insulating sheet 800. including.
　コンデンサ素子４００は、誘電体フィルム上にアルミニウムを蒸着させた２枚の金属化フィルムを重ね、重ねた金属化フィルムを巻回または積層し、扁平状に押圧することにより形成される。コンデンサ素子４００には、一方の端面に、亜鉛等の金属の吹付けにより第１端面電極４１０が形成され、他方の端面に、同じく亜鉛等の金属の吹付けにより第２端面電極４２０が形成される。６つのコンデンサ素子４００は、両端面が上下方向を向く状態で、前後２列であって各列に３つずつ配置され、この状態で、これらコンデンサ素子４００の第１端面電極４１０および第２端面電極４２０に第１バスバー５００および第２バスバー６００がそれぞれ接続される。 The capacitor element 400 is formed by stacking two metallized films obtained by evaporating aluminum on a dielectric film, winding or laminating the stacked metallized films, and pressing them flat. The capacitor element 400 has a first end face electrode 410 formed on one end face by spraying a metal such as zinc, and a second end face electrode 420 formed on the other end face also by spraying a metal such as zinc. You. The six capacitor elements 400 are arranged in two rows before and after the two end faces facing up and down, and three are arranged in each row. In this state, the first end face electrode 410 and the second end face of these capacitor elements 400 are arranged. The first bus bar 500 and the second bus bar 600 are connected to the electrode 420, respectively.
　なお、本実施の形態のコンデンサ素子４００は、誘電体フィルム上にアルミニウムを蒸着させた金属化フィルムにより形成されたが、これ以外にも、亜鉛、マグネシウム等の他の金属を蒸着させた金属化フィルムにより形成されてもよい。あるいは、コンデンサ素子４００は、これらの金属のうち、複数の金属を蒸着させた金属化フィルムにより形成されてもよいし、これらの金属どうしの合金を蒸着させた金属化フィルムにより形成されてもよい。 The capacitor element 400 according to the present embodiment is formed of a metallized film obtained by evaporating aluminum on a dielectric film, but may be formed by metallizing other metals such as zinc and magnesium. It may be formed by a film. Alternatively, capacitor element 400 may be formed of a metallized film obtained by evaporating a plurality of metals among these metals, or may be formed of a metallized film obtained by evaporating an alloy of these metals. .
　第１バスバー５００は、導電性材料、たとえば、銅板を適宜切り抜き、折り曲げることによって形成され、第１本体部５１０と、３つの第１前接続端子部５２０と、第１後接続端子部５３０とが一体となった構成を有する。 The first bus bar 500 is formed by appropriately cutting and bending a conductive material, for example, a copper plate, and includes a first main body portion 510, three first front connection terminal portions 520, and a first rear connection terminal portion 530. It has an integrated configuration.
　第１本体部５１０は、端子面部５１０ａと、前面部５１０ｂとを含む。端子面部５１０ａは、後端部の右端近傍部分がやや後方に張り出した、ほぼ長方形の形状を有し、６つのコンデンサ素子４００の第１端面電極４１０を上方から覆う。端子面部５１０ａには、左右方向に並ぶ６つの開口部５１１の前縁に第１電極端子５１２が形成される。また、端子面部５１０ａには、後端部に４つの第１電極端子５１２が形成され、右端部に３つの第１電極端子５１２が形成される。各コンデンサ素子４００の第１端面電極４１０に対して２つの第１電極端子５１２が接触し、これら第１電極端子５１２が、第１端面電極４１０に半田付け等の接合方法で接合される。これにより、第１バスバー５００が６つのコンデンサ素子４００の第１端面電極４１０に電気的に接続される。前面部５１０ｂは、細長いほぼ長方形の形状を有し、端子面部５１０ａの前縁部から立ち上がる。前面部５１０ｂの上端部は、前方へ張出すように屈曲する。 The first main body 510 includes a terminal surface 510a and a front surface 510b. The terminal surface portion 510a has a substantially rectangular shape with a portion near the right end of the rear end projecting slightly rearward, and covers the first end surface electrodes 410 of the six capacitor elements 400 from above. The first electrode terminal 512 is formed on the terminal surface 510a at the front edge of the six openings 511 arranged in the left-right direction. In the terminal surface portion 510a, four first electrode terminals 512 are formed at the rear end, and three first electrode terminals 512 are formed at the right end. Two first electrode terminals 512 contact the first end face electrode 410 of each capacitor element 400, and these first electrode terminals 512 are joined to the first end face electrode 410 by a joining method such as soldering. Thus, first bus bar 500 is electrically connected to first end face electrodes 410 of six capacitor elements 400. The front portion 510b has an elongated and substantially rectangular shape, and rises from the front edge of the terminal surface portion 510a. The upper end of the front part 510b is bent so as to protrude forward.
　第１本体部５１０には、端子面部５１０ａに２つの円形の流通孔５１３が形成される。２つの流通孔５１３の下には、コンデンサ素子４００が存在しない。また、第１本体部５１０には、端子面部５１０ａと前面部５１０ｂとに跨るようにして、長円形の流通孔５１４が形成される。３つの第１前接続端子部５２０は、等間隔で左右方向に並ぶように前面部５１０ｂの上端部に設けられる。第１前接続端子部５２０は、上方に延びた後に屈曲し前方へと延びる鉤形状を有する。第１前接続端子部５２０には、屈曲部５２１よりも先端部側に円形の貫通孔５２２が形成される。 In the first main body 510, two circular communication holes 513 are formed in the terminal surface 510a. The capacitor element 400 does not exist under the two flow holes 513. In the first main body 510, an oval communication hole 514 is formed so as to straddle the terminal surface 510a and the front surface 510b. The three first front connection terminal portions 520 are provided at the upper end of the front portion 510b so as to be arranged at equal intervals in the left-right direction. The first front connection terminal portion 520 has a hook shape that extends upward and then bends and extends forward. A circular through-hole 522 is formed in the first front connection terminal portion 520 on the tip side with respect to the bent portion 521.
　第１後接続端子部５３０は、第１バスバー５００の後側の端部である端子面部５１０ａの後端部に設けられる。第１後接続端子部５３０は、上方に延びた後に屈曲し後方へと延びる鉤形状を有する。第１後接続端子部５３０には、屈曲部５３１よりも先端部側に円形の貫通孔５３２が形成される。第１後接続端子部５３０の詳細な構成については後述する。 The first rear connection terminal portion 530 is provided at the rear end of the terminal surface portion 510a, which is the rear end of the first bus bar 500. The first rear connection terminal portion 530 has a hook shape that is bent upward after extending upward and extends rearward. A circular through-hole 532 is formed in the first rear connection terminal portion 530 on the distal end side of the bent portion 531. The detailed configuration of the first rear connection terminal unit 530 will be described later.
　第２バスバー６００は、導電性材料、たとえば、銅板を適宜切り抜き、折り曲げることによって形成され、第２本体部６１０と、３つの第２前接続端子部６２０と、第２後接続端子部６３０とが一体となった構成を有する。 The second bus bar 600 is formed by appropriately cutting and bending a conductive material, for example, a copper plate, and includes a second main body 610, three second front connection terminal portions 620, and a second rear connection terminal portion 630. It has an integrated configuration.
　第２本体部６１０は、端子面部６１０ａと、前面部６１０ｂと、後面部６１０ｃを含む。端子面部６１０ａは、ほぼ長方形の形状を有し、６つのコンデンサ素子４００の第２端面電極４２０を下方から覆う。端子面部６１０ａには、前後２つ、左右方向６つの合計１２個の開口部６１１が形成され、各開口部６１１の前縁に第２電極端子６１２が形成される。各コンデンサ素子４００の第２端面電極４２０に対して２つの第２電極端子６１２が接触し、これら第２電極端子６１２が、第２端面電極４２０に半田付け等の接合方法で接合される。これにより、第２バスバー６００が６つのコンデンサ素子４００の第２端面電極４２０に電気的に接続される。前面部６１０ｂは、左側部分が高さの高い長方形の形状を有するとともに右側部分が高さの低い長方形の形状を有し、端子面部６１０ａの前縁部から立ち上がる。前面部６１０ｂの左側部分の上端部は、前方へ張出すように屈曲する。後面部６１０ｃは、長方形の形状を有し、端子面部６１０ａの後縁部から立ち上がる。 The second main body 610 includes a terminal surface 610a, a front surface 610b, and a rear surface 610c. The terminal surface portion 610a has a substantially rectangular shape, and covers the second end surface electrodes 420 of the six capacitor elements 400 from below. A total of twelve openings 611 are formed in the terminal surface part 610a, two in the front-rear direction and six in the left-right direction, and a second electrode terminal 612 is formed at the front edge of each opening 611. Two second electrode terminals 612 are in contact with the second end surface electrode 420 of each capacitor element 400, and these second electrode terminals 612 are joined to the second end surface electrode 420 by a joining method such as soldering. Thereby, the second bus bar 600 is electrically connected to the second end surface electrodes 420 of the six capacitor elements 400. The front portion 610b has a rectangular shape with a high height on the left side and a rectangular shape with a low height on the right side, and rises from the front edge of the terminal surface portion 610a. The upper end of the left part of the front part 610b is bent so as to protrude forward. The rear surface portion 610c has a rectangular shape, and rises from the rear edge of the terminal surface portion 610a.
　第２本体部６１０には、端子面部６１０ａに２つの円形の流通孔６１３が形成される。２つの流通孔６１３の上には、コンデンサ素子４００が存在しない。また、第２本体部６１０には、端子面部６１０ａと前面部６１０ｂとに跨るようにして、２つの長円形の流通孔６１４が形成される。 に は In the second main body 610, two circular communication holes 613 are formed in the terminal surface 610a. The capacitor element 400 does not exist on the two flow holes 613. In the second main body 610, two oblong communication holes 614 are formed so as to straddle the terminal surface 610a and the front surface 610b.
　なお、図３Ｂでは、前側の６つの開口部６１１および第２電極端子６１２と左側の流通孔６１３が前面部６１０ｂに隠れている。 In FIG. 3B, the front six openings 611, the second electrode terminal 612, and the left circulation hole 613 are hidden by the front part 610b.
　３つの第２前接続端子部６２０は、等間隔で左右方向に並ぶように前面部６１０ｂの左側部分の上端部に設けられる。第２前接続端子部６２０は、上方に延びた後に屈曲し前方へと延びる鉤形状を有する。第２前接続端子部６２０には、屈曲部６２１よりも先端部側に円形の貫通孔６２２が形成される。 The three second front connection terminal portions 620 are provided at the upper end of the left portion of the front surface portion 610b so as to be arranged at equal intervals in the left-right direction. The second front connection terminal portion 620 has a hook shape that extends upward and then bends and extends forward. A circular through hole 622 is formed in the second front connection terminal portion 620 on the tip side with respect to the bent portion 621.
　第２後接続端子部６３０は、第２バスバー６００の後側の端部である後面部６１０ｃの上端部に設けられる。第２後接続端子部６３０は、上方に延びた後に屈曲し後方へと延びる鉤形状を有する。第２後接続端子部６３０には、屈曲部６３１よりも先端部側に円形の貫通孔６３２が形成される。第２後接続端子部６３０の詳細な構成については後述する。 The second rear connection terminal portion 630 is provided at the upper end of the rear surface portion 610c, which is the rear end of the second bus bar 600. The second rear connection terminal portion 630 has a hook shape that extends upward and then bends and extends rearward. A circular through hole 632 is formed in the second rear connection terminal portion 630 on the tip side with respect to the bent portion 631. The detailed configuration of the second rear connection terminal section 630 will be described later.
　コンデンサ素子ユニット１００の前側において、３つの第１前接続端子部５２０と３つの第２前接続端子部６２０とが左右方向に交互に並ぶ。また、コンデンサ素子ユニット１００の後側において、第１後接続端子部５３０と第２後接続端子部６３０とが左右方向に並ぶ。 (3) On the front side of the capacitor element unit 100, three first front connection terminal portions 520 and three second front connection terminal portions 620 are alternately arranged in the left-right direction. Further, on the rear side of the capacitor element unit 100, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are arranged in the left-right direction.
　第１バスバー５００の前面部５１０ｂと第２バスバー６００の前面部６１０ｂとの間に第１絶縁シート７００が配置される。また、第２バスバー６００の第２後接続端子部６３０とコンデンサ素子４００との間に第２絶縁シート８００が配置される。第１絶縁シート７００および第２絶縁シート８００は、絶縁紙や、アクリル、シリコン等の電気的な絶縁性を有する樹脂材料により形成される。第１絶縁シート７００により第１バスバー５００と第２バスバー６００との間の絶縁距離が確保され、第２絶縁シート８００により第２バスバー６００の第２後接続端子部６３０とコンデンサ素子４００の第１端面電極４１０との間の絶縁距離が確保される。 第 The first insulating sheet 700 is disposed between the front part 510b of the first bus bar 500 and the front part 610b of the second bus bar 600. Further, a second insulating sheet 800 is disposed between the second rear connection terminal portion 630 of the second bus bar 600 and the capacitor element 400. The first insulating sheet 700 and the second insulating sheet 800 are formed of insulating paper, or an electrically insulating resin material such as acrylic or silicon. The first insulation sheet 700 secures an insulation distance between the first bus bar 500 and the second bus bar 600, and the second insulation sheet 800 secures the second rear connection terminal portion 630 of the second bus bar 600 and the first of the capacitor element 400. An insulation distance with the end face electrode 410 is ensured.
　ケース２００は、樹脂製であり、たとえば、熱可塑性樹脂であるポリフェニレンサルファイド（ＰＰＳ）により形成される。ケース２００は、ほぼ直方体の箱状に形成され、底壁２０１と、底壁２０１から立ち上がる前側壁２０２、後側壁２０３、左側壁２０４および右側壁２０５とを有し、上面が開口する。 The case 200 is made of a resin, and is made of, for example, polyphenylene sulfide (PPS) which is a thermoplastic resin. The case 200 is formed in a substantially rectangular parallelepiped box shape, has a bottom wall 201, a front side wall 202, a rear side wall 203, a left side wall 204, and a right side wall 205 rising from the bottom wall 201, and has an open upper surface.
　左側壁２０４および右側壁２０５には、上部に、取付タブ２１０が設けられる。取付タブ２１０は、左側壁２０４および右側壁２０５と同じ幅を有する。前側壁２０２および後側壁２０３は、左右の取付タブ２１０の先端まで延びる。取付タブ２１０には、挿通孔２１１が形成される。挿通孔２１１には、孔の強度を上げるために金属製のカラー２１２が嵌め込まれる。左右の取付タブ２１０の中央部の裏側には、下方に延びる取付ボス２２０が形成される。取付ボス２２０には、ナット（図示せず）が埋め込まれる。なお、図２では、右側の取付ボス２２０のみが描かれている。 取 付 A mounting tab 210 is provided on the upper part of the left side wall 204 and the right side wall 205. The mounting tab 210 has the same width as the left side wall 204 and the right side wall 205. The front side wall 202 and the rear side wall 203 extend to the front ends of the left and right mounting tabs 210. An insertion hole 211 is formed in the mounting tab 210. A metal collar 212 is fitted into the insertion hole 211 to increase the strength of the hole. A mounting boss 220 extending downward is formed on the back side of the center of the left and right mounting tabs 210. A nut (not shown) is embedded in the mounting boss 220. In FIG. 2, only the right mounting boss 220 is illustrated.
　前側壁２０２には、右端近傍の上部に、取付タブ２３０が形成される。各取付タブ２３０には、挿通孔２３１が形成される。挿通孔２３１には、孔の強度を上げるために金属製のカラー２３２が嵌め込まれる。また、前側壁２０２には、下部に、左右方向に並ぶように４つの取付ボス２４０が形成される。取付ボス２４０には、ナット２４１が埋め込まれる。 取 付 A mounting tab 230 is formed on the front side wall 202 at an upper portion near the right end. Each mounting tab 230 has an insertion hole 231 formed therein. A metal collar 232 is fitted into the insertion hole 231 to increase the strength of the hole. Further, four mounting bosses 240 are formed in the lower portion of the front wall 202 so as to be arranged in the left-right direction. A nut 241 is embedded in the mounting boss 240.
　これら取付タブ２１０、２３０および取付ボス２２０、２４０は、フィルムコンデンサ１がインバータユニット等の外部装置の設置部に固定される際に用いられる。 取 付 These mounting tabs 210, 230 and mounting bosses 220, 240 are used when the film capacitor 1 is fixed to an installation portion of an external device such as an inverter unit.
　コンデンサ素子ユニット１００がケース２００内に収容され、ケース２００内に溶融状態の充填樹脂３００が注入される。このとき、充填樹脂３００が、第１バスバー５００の流通孔５１３、５１４および第２バスバー６００の流通孔６１３、６１４を通ることにより、６つのコンデンサ素子４００の間に充填樹脂３００が行き渡りやすくなる。充填樹脂３００が開口２００ａの近傍までケース２００内に満たされ、充填樹脂３００の注入が完了すると、ケース２００が加熱される。これにより、ケース２００内の充填樹脂３００が硬化する。 (4) The capacitor element unit 100 is housed in the case 200, and the filling resin 300 in a molten state is injected into the case 200. At this time, the filled resin 300 passes through the flow holes 513 and 514 of the first bus bar 500 and the flow holes 613 and 614 of the second bus bar 600, so that the filled resin 300 can easily spread between the six capacitor elements 400. The case 200 is filled with the filling resin 300 up to the vicinity of the opening 200a, and when the filling of the filling resin 300 is completed, the case 200 is heated. Thereby, the filling resin 300 in the case 200 is cured.
　こうして、図１のように、フィルムコンデンサ１が完成する。３つの第１前接続端子部５２０、３つの第２前接続端子部６２０、第１後接続端子部５３０および第２後接続端子部６３０が、ケース２００内に充填された充填樹脂３００から露出する。 Thus, the film capacitor 1 is completed as shown in FIG. The three first front connection terminal portions 520, the three second front connection terminal portions 620, the first rear connection terminal portion 530, and the second rear connection terminal portion 630 are exposed from the filled resin 300 filled in the case 200. .
　次に、第１バスバー５００の第１後接続端子部５３０および第２バスバー６００の第２後接続端子部６３０の詳細な構造について説明する。 Next, detailed structures of the first rear connection terminal portion 530 of the first bus bar 500 and the second rear connection terminal portion 630 of the second bus bar 600 will be described.
　図４Ａは、第１後接続端子部５３０の周辺が示された第１バスバー５００の要部の斜視図であり、図４Ｂは、第２後接続端子部６３０の周辺が示された第２バスバー６００の要部の斜視図である。図５Ａは、第１バスバー５００の第１後接続端子部５３０の周辺を示すフィルムコンデンサ１の要部の断面図であり、図５Ｂは、第２バスバー６００の第２後接続端子部６３０の周辺を示すフィルムコンデンサ１の要部の断面図である。 FIG. 4A is a perspective view of a main portion of the first bus bar 500 showing the periphery of the first rear connection terminal portion 530, and FIG. 4B is a second bus bar showing the periphery of the second rear connection terminal portion 630. FIG. FIG. 5A is a cross-sectional view of a main part of the film capacitor 1 showing the periphery of the first rear connection terminal portion 530 of the first bus bar 500, and FIG. 5B is the periphery of the second rear connection terminal portion 630 of the second bus bar 600. FIG. 2 is a cross-sectional view of a main part of the film capacitor 1 showing the above.
　第１後接続端子部５３０は、第１本体部５１０の後端部から延び出す鉤状の第１端子部５３０ａと、第１端子部５３０ａの先端から折り返されて第１端子部５３０ａに重ね合される鉤状の第２端子部５３０ｂとを含む。同様に、第２後接続端子部６３０は、第２本体部６１０の後面部６１０ｃの上端部から延び出す鉤状の第１端子部６３０ａと、第１端子部６３０ａの先端から折り返されて第１端子部６３０ａに重ね合される鉤状の第２端子部６３０ｂとを含む。 The first rear connection terminal portion 530 overlaps the hook-shaped first terminal portion 530a extending from the rear end portion of the first main body portion 510 and the first terminal portion 530a by being folded back from the front end of the first terminal portion 530a. And a hook-shaped second terminal portion 530b. Similarly, the second rear connection terminal portion 630 has a hook-shaped first terminal portion 630a extending from the upper end of the rear surface portion 610c of the second main body portion 610, and is folded back from the tip of the first terminal portion 630a to be the first terminal portion. And a hook-shaped second terminal portion 630b superposed on the terminal portion 630a.
　第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂは、同じ材料（銅板）で形成されており、互いに重なり合う部分の厚み、即ち、第２端子部５３０ｂ、６３０ｂの厚みと第１端子部５３０ａ、６３０ａにおける第２端子部５３０ｂ、６３０ｂが重なる部分の厚みが同じとなる。後述のバスバー製造工程で第１バスバー５００および第２バスバー６００が製造される際、第２端子部５３０ｂ、６３０ｂと第１端子部５３０ａ、６３０ａにおける第２端子部５３０ｂ、６３０ｂが重なる部分は、プレスにより押し潰される。そのため、第１端子部５３０ａ、６３０ａにおける第２端子部５３０ｂ、６３０ｂが重なる部分の厚みは、第１端子部５３０ａ、６３０ａにおける第２端子部５３０ｂ、６３０ｂが重ならない部分の厚みよりも小さくなる。 The first terminal portions 530a and 630a and the second terminal portions 530b and 630b are formed of the same material (copper plate), and the thickness of the overlapping portion, that is, the thickness of the second terminal portions 530b and 630b and the first terminal portion The portions where the second terminal portions 530b and 630b overlap in 530a and 630a have the same thickness. When the first bus bar 500 and the second bus bar 600 are manufactured in a later-described bus bar manufacturing process, a portion where the second terminal portions 530b, 630b of the second terminal portions 530b, 630b and the first terminal portions 530a, 630a overlap each other is pressed. Crushed by Therefore, the thickness of the portion where the second terminal portions 530b and 630b overlap in the first terminal portions 530a and 630a is smaller than the thickness of the portion where the second terminal portions 530b and 630b do not overlap in the first terminal portions 530a and 630a.
　このように、第１後接続端子部５３０は、第１端子部５３０ａと、第１端子部５３０ａに重ね合される第２端子部５３０ｂとにより構成されるため、その厚みが第１本体部５１０の厚みに比べて大きいもの（ほぼ２倍）となる。同様に、第２後接続端子部６３０は、第１端子部６３０ａと、第１端子部６３０ａに重ね合される第２端子部６３０ｂとにより構成されるため、その厚みが第２本体部６１０の厚みに比べて大きいもの（ほぼ２倍）となる。 As described above, since the first rear connection terminal portion 530 is configured by the first terminal portion 530a and the second terminal portion 530b superimposed on the first terminal portion 530a, the thickness thereof is reduced to the first main body portion 510. Is larger (almost twice) as compared with the thickness. Similarly, since the second rear connection terminal portion 630 includes the first terminal portion 630a and the second terminal portion 630b overlapped with the first terminal portion 630a, the thickness of the second rear connection terminal portion 630 is equal to that of the second main body portion 610. It is larger (almost twice) than the thickness.
　第１後接続端子部５３０は、その屈曲部５３１が第１端子部５３０ａと第２端子部５３０ｂとが重なり合う部分に含まれる。そして、屈曲部５３１よりも第２端子部５３０ｂの折り返し部分（第１後接続端子部５３０の先端部）とは反対側の部分において、第１端子部５３０ａと第２端子部５３０ｂとがリベット５３３により接合される。第１端子部５３０ａと第２端子部５３０ｂには、リベット５３３が通される孔５３４ａ、５３４ｂが形成される。同様に、第２後接続端子部６３０は、その屈曲部６３１が第１端子部６３０ａと第２端子部６３０ｂとが重なり合う部分に含まれる。そして、屈曲部６３１よりも第２端子部６３０ｂの折り返し部分（第２後接続端子部６３０の先端部）とは反対側の部分において、第１端子部６３０ａと第２端子部６３０ｂとがリベット６３３により接合される。第１端子部６３０ａと第２端子部６３０ｂには、リベット６３３が通される孔６３４ａ、６３４ｂが形成される。 The first rear connection terminal portion 530 is included in a portion where the bent portion 531 overlaps the first terminal portion 530a and the second terminal portion 530b. The first terminal 530a and the second terminal 530b are rivets 533 at a portion opposite to the bent portion of the second terminal 530b (the end of the first connection terminal 530). Are joined. Holes 534a and 534b through which the rivets 533 pass are formed in the first terminal portion 530a and the second terminal portion 530b. Similarly, the bent portion 631 of the second rear connection terminal portion 630 is included in a portion where the first terminal portion 630a and the second terminal portion 630b overlap. Then, the first terminal portion 630a and the second terminal portion 630b are rivet 633 at a portion opposite to the bent portion of the second terminal portion 630b (the tip portion of the second rear connection terminal portion 630) with respect to the bent portion 631. Are joined. Holes 634a and 634b through which the rivets 633 pass are formed in the first terminal portion 630a and the second terminal portion 630b.
　第１後接続端子部５３０の貫通孔５３２は、第１端子部５３０ａに形成された第１孔５３２ａと第２端子部５３０ｂに形成され、第１孔５３２ａと整合する第２孔５３２ｂとにより構成される。第１孔５３２ａの径は第２孔５３２ｂの径と同じとされる。同様に、第２後接続端子部６３０の貫通孔６３２は、第１端子部６３０ａに形成された第１孔６３２ａと第２端子部６３０ｂに形成され、第１孔６３２ａと整合する第２孔６３２ｂとにより構成される。第１孔６３２ａの径は第２孔６３２ｂの径と同じとされる。 The through hole 532 of the first rear connection terminal portion 530 includes a first hole 532a formed in the first terminal portion 530a and a second hole 532b formed in the second terminal portion 530b and aligned with the first hole 532a. Is done. The diameter of the first hole 532a is the same as the diameter of the second hole 532b. Similarly, the through hole 632 of the second rear connection terminal portion 630 is formed in the first hole 632a and the second terminal portion 630b formed in the first terminal portion 630a, and the second hole 632b is aligned with the first hole 632a. It is composed of The diameter of the first hole 632a is the same as the diameter of the second hole 632b.
　第１後接続端子部５３０および第２後接続端子部６３０の先端部の左右の角５３５、６３５は、Ｒ加工が施されて丸められる。なお、左右の角に、Ｒ加工に替えて、面取り（Ｃ面カット）加工が施されてもよい。 左右 Right and left corners 535, 635 of the distal end portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are rounded by R processing. The left and right corners may be chamfered (C-plane cut) instead of the R-process.
　図５Ａに示すように、第１後接続端子部５３０は、第１端子部５３０ａと第２端子部５３０ｂとが重なり合う部分における第１後接続端子部５３０の先端側とは反対側の端部が充填樹脂３００に埋没する。同様に、図５Ｂに示すように、第２後接続端子部６３０は、第１端子部６３０ａと第２端子部６３０ｂとが重なり合う部分における第２後接続端子部６３０の先端側とは反対側の端部が充填樹脂３００に埋没する。 As shown in FIG. 5A, the first rear connection terminal portion 530 has an end opposite to the distal end side of the first rear connection terminal portion 530 in a portion where the first terminal portion 530a and the second terminal portion 530b overlap. It is buried in the filling resin 300. Similarly, as shown in FIG. 5B, the second rear connection terminal portion 630 is located on the side opposite to the tip end side of the second rear connection terminal portion 630 in a portion where the first terminal portion 630a and the second terminal portion 630b overlap. The end is buried in the filling resin 300.
　次に、第１バスバー５００および第２バスバー６００の製造方法について説明する。 Next, a method of manufacturing the first bus bar 500 and the second bus bar 600 will be described.
　図６は、バスバー製造工程の流れを示す図である。図７は、接続端子部折り曲げ工程について説明するための図である。図８Ａは、接続端子部プレス工程について説明するための図であり、図８Ｂは、接続端子部仕上げ工程について説明するための図である。 FIG. 6 is a diagram showing the flow of the bus bar manufacturing process. FIG. 7 is a diagram for explaining the connection terminal portion bending step. FIG. 8A is a diagram for explaining a connection terminal portion pressing step, and FIG. 8B is a diagram for explaining a connection terminal portion finishing step.
　図６に示すように、第１バスバー５００および第２バスバー６００の製造するためのバスバー製造工程は、型抜き工程と、接続端子部折り曲げ工程と、接続端子部プレス工程と、接続端子部仕上げ工程と、全体折り曲げ工程とを含む。 As shown in FIG. 6, a bus bar manufacturing process for manufacturing the first bus bar 500 and the second bus bar 600 includes a die cutting process, a connection terminal portion bending process, a connection terminal portion pressing process, and a connection terminal portion finishing process. And an entire bending step.
　以下、第１バスバー５００を例にとり、バスバー製造工程の各工程ついて説明するが、第２バスバー６００についても同様である。 Hereinafter, each step of the bus bar manufacturing process will be described using the first bus bar 500 as an example, but the same applies to the second bus bar 600.
　まず、型抜き工程が行われる（Ｓ１）。型抜き工程では、第１バスバー５００の形状を有する抜き型を用いて板材（銅板）が繰り抜かれ、展開状態の第１バスバー５００が切り出される。 (1) First, a die cutting step is performed (S1). In the die cutting step, a plate material (copper plate) is punched out using a die having the shape of the first bus bar 500, and the first bus bar 500 in an expanded state is cut out.
　次に、接続端子部折り曲げ工程が行われる（Ｓ２）。図７に示すように、接続端子部折り曲げ工程では、展開状態の第１バスバー５００において、第２端子部５３０ｂが第１端子部５３０ａとの境界で折り曲げられ、第１端子部５３０ａに重ね合される。 Next, a connecting terminal portion bending step is performed (S2). As shown in FIG. 7, in the connecting terminal portion bending step, in the first bus bar 500 in the unfolded state, the second terminal portion 530b is bent at the boundary with the first terminal portion 530a and overlapped with the first terminal portion 530a. You.
　次に、接続端子部プレス工程が行われる（Ｓ３）。図８Ａに示すように、接続端子部プレス工程では、重ね合された第１端子部５３０ａおよび第２端子部５３０ｂが、それらの厚み方向にプレスされて押し潰される。これにより、第１端子部５３０ａと第２端子部５３０ｂの互いに対向する面が強固に密着する。 Next, a connection terminal portion pressing step is performed (S3). As shown in FIG. 8A, in the connection terminal portion pressing step, the first terminal portion 530a and the second terminal portion 530b that are superimposed are pressed in the thickness direction thereof and crushed. Thereby, the mutually opposing surfaces of the first terminal portion 530a and the second terminal portion 530b are firmly adhered.
　次に、接続端子部仕上げ工程が行われる（Ｓ４）。図８Ｂに示すように、接続端子部仕上げ工程では、まず、第１端子部５３０ａに第１孔５３２ａが開けられ、第２端子部５３０ｂに第２孔５３２ｂが開けられることにより、第１後接続端子部５３０に貫通孔５３２が形成される。また、第１端子部５３０ａおよび第２端子部５３０ｂにリベット５３３が通る孔５３４ａ、５３４ｂが開けられる。次に、プレスにより押し潰されることで第１端子部５３０ａの基端部よりも左右にはみ出した部分が削り落とされるとともに、第１後接続端子部５３０の先端部の左右の角５３５にＲ加工が施される。 Next, a connection terminal part finishing step is performed (S4). As shown in FIG. 8B, in the connection terminal part finishing step, first, a first hole 532a is opened in the first terminal part 530a, and a second hole 532b is opened in the second terminal part 530b, so that the first post-connection is performed. A through hole 532 is formed in the terminal portion 530. Further, holes 534a and 534b through which the rivet 533 passes are formed in the first terminal portion 530a and the second terminal portion 530b. Next, the portion protruding left and right beyond the base end of the first terminal portion 530a by being crushed by a press is shaved off, and the right and left corners 535 of the front end portion of the first rear connection terminal portion 530 are rounded. Is applied.
　最後に、全体折り曲げ工程が行われる（Ｓ５）。全体折り曲げ工程では、第１後接続端子部５３０が最終の形状となるように折り曲げられるとともに、第１本体部５１０および第１前接続端子部５２０が最終の形状となるように折り曲げられる。さらに、第１後接続端子部５３０の第１端子部５３０ａと第２端子部５３０ｂとがリベット５３３で接合される。 Finally, the entire bending step is performed (S5). In the entire bending process, the first rear connection terminal portion 530 is bent so as to have a final shape, and the first main body portion 510 and the first front connection terminal portion 520 are bent so as to have a final shape. Further, the first terminal portion 530a and the second terminal portion 530b of the first rear connection terminal portion 530 are joined by rivets 533.
　こうして、図３Ａのような第１バスバー５００が出来上がる。 Thus, the first bus bar 500 as shown in FIG. 3A is completed.
　フィルムコンデンサ１は、たとえば、電気自動車において電気モータを駆動するためのインバータユニットに搭載され得る。インバータユニットには電源装置（バッテリー）から電力が供給される。この場合、電源装置に繋がる外部端子（図示せず）が、第１バスバー５００の第１後接続端子部５３０および第２バスバー６００の第２後接続端子部６３０に、貫通孔５３２、６３２を用いたネジ止めにより接続される。また、インバータ回路に繋がる外部端子（図示せず）が、第１バスバー５００の第１前接続端子部５２０および第２バスバー６００の第２前接続端子部６２０に、貫通孔５２２、６２２を用いたネジ止めにより接続される。 The film capacitor 1 can be mounted on, for example, an inverter unit for driving an electric motor in an electric vehicle. Power is supplied to the inverter unit from a power supply device (battery). In this case, the external terminals (not shown) connected to the power supply device use the through holes 532 and 632 in the first rear connection terminal portion 530 of the first bus bar 500 and the second rear connection terminal portion 630 of the second bus bar 600. It is connected by a screw. In addition, as for external terminals (not shown) connected to the inverter circuit, through holes 522 and 622 are used for the first front connection terminal portion 520 of the first bus bar 500 and the second front connection terminal portion 620 of the second bus bar 600. Connected by screwing.
　電気モータの駆動時、即ち、フィルムコンデンサ１への通電時、電源装置に繋がる第１後接続端子部５３０および第２後接続端子部６３０には、電源装置からの大きな電流が流れ得る。 (4) When the electric motor is driven, that is, when the film capacitor 1 is energized, a large current from the power supply device can flow through the first rear connection terminal portion 530 and the second rear connection terminal portion 630 connected to the power supply device.
　本実施の形態では、第１後接続端子部５３０は、第１バスバー５００の第１本体部５１０に比べて電流の流れに直交する方向（左右方向）の幅が小さい反面、第１端子部５３０ａと第２端子部５３０ｂとが重なり合う構造により第１本体部５１０よりも厚みが大きくされている。これにより、第１後接続端子部５３０は、電流の流れに直交する方向（左右方向）の断面積が大きくなるため、電気抵抗が小さくなる。よって、大きな電流が流れたときの第１後接続端子部５３０での発熱が低減される。同様に、第２後接続端子部６３０も、第２バスバー６００の第２本体部６１０に比べて電流の流れに直交する方向（左右方向）の幅が小さい反面、第１端子部６３０ａと第２端子部６３０ｂとが重なり合う構造により第２本体部６１０よりも厚みが大きくされている。よって、大きな電流が流れたときの第２後接続端子部６３０での発熱が低減される。 In the present embodiment, the first rear connection terminal portion 530 has a smaller width in the direction (left-right direction) orthogonal to the current flow than the first main body portion 510 of the first bus bar 500, but the first terminal portion 530a The thickness is made larger than that of the first main body 510 due to the structure in which the first main body 510 and the second terminal 530b overlap. As a result, the first rear connection terminal portion 530 has a larger cross-sectional area in a direction (left-right direction) orthogonal to the current flow, and thus has a lower electric resistance. Therefore, heat generation at the first rear connection terminal portion 530 when a large current flows is reduced. Similarly, the second rear connection terminal portion 630 also has a smaller width in the direction (left-right direction) orthogonal to the current flow than the second main body portion 610 of the second bus bar 600, but has the first terminal portion 630a and the second Due to the structure in which the terminal portion 630b overlaps, the thickness is made larger than that of the second main body portion 610. Therefore, heat generation at the second rear connection terminal portion 630 when a large current flows is reduced.
　＜実施の形態の効果＞
　以上、本実施の形態によれば、以下の効果が奏される。 <Effects of Embodiment>
As described above, according to the present embodiment, the following effects can be obtained.
　第１バスバー５００および第２バスバー６００の端部には、外部端子に接続可能な第１後接続端子部５３０および第２後接続端子部６３０が設けられ、これら接続端子部５３０、６３０は、第１バスバー５００および第２バスバー６００の端部から延び出す第１端子部５３０ａ、６３０ａと当該第１端子部５３０ａ、６３０ａに重ね合される第２端子部５３０ｂ、６３０ｂとを含む。 At the ends of the first bus bar 500 and the second bus bar 600, a first rear connection terminal portion 530 and a second rear connection terminal portion 630 that can be connected to external terminals are provided, and these connection terminal portions 530, 630 It includes first terminal portions 530a, 630a extending from the ends of the first bus bar 500 and the second bus bar 600, and second terminal portions 530b, 630b superimposed on the first terminal portions 530a, 630a.
　この構成によれば、第１後接続端子部５３０および第２後接続端子部６３０の厚みが大きくなるため、電流の流れに直交する方向（左右方向）の断面積が大きくなり、電気抵抗が小さくなる。これにより、電流が流れたときの第１後接続端子部５３０および第２後接続端子部６３０の発熱を低減できるので、これらの熱がコンデンサ素子４００に伝播することによるコンデンサ素子４００の熱損傷を防止できる。 According to this configuration, since the thickness of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 increases, the cross-sectional area in the direction (left-right direction) orthogonal to the current flow increases, and the electric resistance decreases. Become. Thereby, the heat generation of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 when the current flows can be reduced, so that the heat damage of the capacitor element 400 due to the propagation of the heat to the capacitor element 400 can be reduced. Can be prevented.
　また、第１後接続端子部５３０および第２後接続端子部６３０は、貫通孔５３２、６３２を有し、貫通孔５３２、６３２は、第１端子部５３０ａ、６３０ａに形成された第１孔５３２ａ、６３２ａと第２端子部５３０ｂ、６３０ｂに形成された第２孔５３２ｂ、６３２ｂにより構成され、第１孔５３２ａ、６３２ａと第２孔５３２ｂ、６３２ｂは径が同じとされる。 Further, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 have through holes 532, 632, and the through holes 532, 632 are formed in the first holes 532a formed in the first terminal portions 530a, 630a. , 632a and second holes 532b, 632b formed in the second terminal portions 530b, 630b, and the first holes 532a, 632a and the second holes 532b, 632b have the same diameter.
　第１孔５３２ａ、６３２ａの径と第２孔５３２ｂ、６３２ｂの径が異なる場合、一方の孔の径が外部端子の接続に必要な大きさとされ、他方の孔の径がそれよりも大きくされることになる。この場合、一方の孔が大きい分、貫通孔５３２、６３２の部分で第１後接続端子部５３０および第２後接続端子部６３０の断面積が小さくなってしまい、電気抵抗が大きくなってしまう。これに対し、本実施の形態では、第１孔５３２ａ、６３２ａと第２孔５３２ｂ、６３２ｂは径が同じとされるので、第１孔５３２ａ、６３２ａと第２孔５３２ｂ、６３２ｂの径を外部端子の接続に必要な大きさに揃えることができる。このため、貫通孔５３２、６３２の部分で第１後接続端子部５３０および第２後接続端子部６３０の断面積が小さくならず、電気抵抗が大きくならない。 When the diameters of the first holes 532a and 632a are different from the diameters of the second holes 532b and 632b, the diameter of one hole is set to a size necessary for connection of an external terminal, and the diameter of the other hole is larger than that. Will be. In this case, the cross-sectional area of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 is reduced in the portions of the through holes 532 and 632 by the size of one of the holes, and the electric resistance is increased. On the other hand, in the present embodiment, since the diameters of the first holes 532a, 632a and the second holes 532b, 632b are the same, the diameters of the first holes 532a, 632a and the second holes 532b, 632b are set to the external terminal. Can be adjusted to the size required for connection. Therefore, the cross-sectional areas of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 at the through holes 532 and 632 are not reduced, and the electric resistance is not increased.
　さらに、第２端子部５３０ｂ、６３０ｂは、第１端子部５３０ａ、６３０ａの先端から折り返されて第１端子部５３０ａ、６３０ａに重ね合される。 {Circle around (2)} Further, the second terminal portions 530b, 630b are folded from the ends of the first terminal portions 530a, 630a and overlap the first terminal portions 530a, 630a.
　この構成によれば、第２端子部５３０ｂ、６３０ｂを、第１端子部５３０ａ、６３０ａを含む第１バスバー５００および第２バスバー６００と別に作成しなくてよいため、第１バスバー５００および第２バスバー６００を容易に製造することが可能となる。 According to this configuration, since the second terminal portions 530b and 630b do not need to be formed separately from the first bus bar 500 and the second bus bar 600 including the first terminal portions 530a and 630a, the first bus bar 500 and the second bus bar 600 can be easily manufactured.
　さらに、第１後接続端子部５３０および第２後接続端子部６３０は屈曲部５３１、６３１を有し、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが重なり合う部分に屈曲部５３１、６３１が含まれる。 Further, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 have bent portions 531 and 631, and the bent portion 531 is formed at a portion where the first terminal portions 530a and 630a and the second terminal portions 530b and 630b overlap. , 631 are included.
　この構成によれば、屈曲部５３１、６３１の厚みが大きくなることにより屈曲部５３１、６３１の剛性が高まるので、第１後接続端子部５３０および第２後接続端子部６３０の屈曲部５３１、６３１よりも先端側が変形しにくくなる。 According to this configuration, since the rigidity of the bent portions 531 and 631 is increased by increasing the thickness of the bent portions 531 and 631, the bent portions 531 and 631 of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are increased. The tip side is less likely to be deformed.
　さらに、第１後接続端子部５３０および第２後接続端子部６３０における屈曲部５３１、６３１よりも第２端子部５３０ｂ、６３０ｂの折り返し部分とは反対側の部分において、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂがリベット５３３、６３３により接合される。 Furthermore, the first terminal portions 530a and 630a are located on the opposite side of the bent portions 531 and 631 of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 from the bent portions of the second terminal portions 530b and 630b. And the second terminal portions 530b, 630b are joined by rivets 533, 633.
　この構成によれば、第２端子部５３０ｂ、６３０ｂの折り返し部分から離れているために第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの間が開きやすく、屈曲部５３１、６３１が形成されることでさらに間が開きやすい部分がリベット５３３、６３３により接合されるので、この部分での第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとの密着性を高めることができる。これにより、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂに隙間が生じる（密着性が悪くなる）ことで、第１後接続端子部５３０および第２後接続端子部６３０の電気抵抗が大きくなってしまうことを防止できる。 According to this configuration, since the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are easily opened because the second terminal portions 530b, 630b are separated from the folded portions, the bent portions 531, 631 are formed. By doing so, the portions that are more likely to open are joined by the rivets 533, 633, so that the adhesion between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b at these portions can be increased. As a result, a gap is formed between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b (adhesion is deteriorated), and the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 is increased. Can be prevented from becoming large.
　さらに、第１後接続端子部５３０および第２後接続端子部６３０は、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが重なり合う部分における第１後接続端子部５３０および第２後接続端子部６３０の先端側とは反対側の端部がケース２００内に充填された充填樹脂３００に埋没する。 Furthermore, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed by a first rear connection terminal portion 530 and a second rear connection portion 530a in a portion where the first terminal portions 530a, 630a and the second terminal portions 530b, 630b overlap. The end of the connection terminal 630 opposite to the tip end is buried in the filling resin 300 filled in the case 200.
　この構成によれば、厚みが大きくなることにより重くなった第１後接続端子部５３０および第２後接続端子部６３０の根元部分を、充填樹脂３００によりしっかりと支えることができるので、第１後接続端子部５３０および第２後接続端子部６３０が変形しにくくなり、第１後接続端子部５３０および第２後接続端子部６３０の位置を高い精度に維持できる。 According to this configuration, the base portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630, which have become heavy due to the increase in thickness, can be firmly supported by the filling resin 300. The connection terminal portion 530 and the second rear connection terminal portion 630 are not easily deformed, and the positions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 can be maintained with high accuracy.
　さらに、第１バスバー５００および第２バスバー６００が、展開状態の第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとを、それらの境界で折り曲げて重ね合せる工程と、重ね合された第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとを、それらの厚み方向にプレスする工程と、を含むバスバー製造工程により製造される。 Further, the first bus bar 500 and the second bus bar 600 bend the first terminal portions 530a, 630a and the second terminal portions 530b, 630b in the unfolded state at their boundaries, and overlap the first and second bus bars. It is manufactured by a bus bar manufacturing process including a process of pressing the first terminal portions 530a and 630a and the second terminal portions 530b and 630b in their thickness direction.
　この構成によれば、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが折り曲げられることにより重ね合せられるので、第２端子部５３０ｂ、６３０ｂを、第１端子部５３０ａ、６３０ａを含む第１バスバー５００および第２バスバー６００と別に作成しなくてよく、第１バスバー５００および第２バスバー６００を容易に製造することが可能となる。 According to this configuration, since the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are folded and overlapped, the second terminal portions 530b and 630b include the first terminal portions 530a and 630a. The first bus bar 500 and the second bus bar 600 do not have to be formed separately from the first bus bar 500 and the second bus bar 600, and the first bus bar 500 and the second bus bar 600 can be easily manufactured.
　しかも、重ね合された第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとがプレスにより押し潰されるので、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとの密着性が高められる。これにより、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂに隙間が生じる（密着性が悪くなる）ことで、第１後接続端子部５３０および第２後接続端子部６３０の電気抵抗が大きくなってしまうことを防止できる。さらには、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの間に充填樹脂３００が入り込むことで第１後接続端子部５３０および第２後接続端子部６３０の電気抵抗が大きくなってしまうことを防止できる。 Moreover, since the first terminal portions 530a, 630a and the second terminal portions 530b, 630b which are superimposed are crushed by pressing, the adhesion between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b is improved. Enhanced. As a result, a gap is formed between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b (adhesion is deteriorated), and the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 is increased. Can be prevented from becoming large. Furthermore, when the filling resin 300 enters between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 increases. Can be prevented.
　＜変更例＞
　以上、本開示の実施の形態について説明したが、本開示は、上記実施の形態に限定されるものではなく、また、本開示の適用例も、上記実施の形態の他に、種々の変更が可能である。 <Example of change>
As described above, the embodiments of the present disclosure have been described. However, the present disclosure is not limited to the above-described embodiments. It is possible.
　たとえば、上記実施の形態では、第１バスバー５００において、第１後接続端子部５３０の第１端子部５３０ａと第２端子部５３０ｂとがリベット５３３により接合された。同様に、第２バスバー６００において、第２後接続端子部６３０の第１端子部６３０ａと第２端子部６３０ｂとがリベット６３３により接合された。しかしながら、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが、他の接合方法により接合されてもよい。たとえば、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが圧着により接合されてもよい。この場合、図９Ａのように、第２端子部５３０ｂ、６３０ｂに突起５３７、６３７が形成され、この突起５３７、６３７が第１端子部５３０ａ、６３０ａに形成された孔５３８、６３８に通されて潰される（カシメられる）ような圧着構造を採ることができる。なお、第１端子部５３０ａ、６３０ａに突起５３７、６３７が形成されてもよく、第２端子部５３０ｂ、６３０ｂに孔５３８、６３８が形成されてもよい。また、たとえば、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが半田付けにより接合されてもよい。この場合、図９Ｂのように、半田シートＳが第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとの間に挟まれる。そして、半田シートＳが加熱されて溶解した後に再び固まることで、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが結合される。さらに、たとえば、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとがスポット溶接等の溶接により接合されてもよい。第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが半田付けまたは溶接により接合される場合に、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの重なり合った部分全体的に半田付けまたは溶接が施されてもよい。 For example, in the above embodiment, in the first bus bar 500, the first terminal portion 530a and the second terminal portion 530b of the first rear connection terminal portion 530 are joined by the rivets 533. Similarly, in the second bus bar 600, the first terminal portion 630a and the second terminal portion 630b of the second rear connection terminal portion 630 are joined by rivets 633. However, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by another joining method. For example, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by crimping. In this case, as shown in FIG. 9A, protrusions 537, 637 are formed on the second terminal portions 530b, 630b, and the protrusions 537, 637 are passed through holes 538, 638 formed on the first terminal portions 530a, 630a. A crimped structure that can be crushed (caulked) can be employed. The protrusions 537 and 637 may be formed on the first terminal portions 530a and 630a, and the holes 538 and 638 may be formed on the second terminal portions 530b and 630b. Further, for example, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by soldering. In this case, as shown in FIG. 9B, the solder sheet S is sandwiched between the first terminal portions 530a, 630a and the second terminal portions 530b, 630b. Then, after the solder sheet S is heated and melted and then solidified again, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are joined. Further, for example, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b may be joined by welding such as spot welding. When the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are joined by soldering or welding, the whole of the overlapping portion of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b. Soldering or welding may be applied.
　さらに、上記実施の形態では、第２端子部５３０ｂ、６３０ｂは、第１端子部５３０ａ、６３０ａと同じ材料で形成され、第１端子部５３０ａ、６３０ａの先端部で折り返されて第１端子部５３０ａ、６３０ａに重ね合された。しかしながら、図１０Ａおよび図１０Ｂに示すように、第２端子部５３０ｂ、６３０ｂが、第１端子部５３０ａ、６３０ａと別体に形成され、第１端子部５３０ａ、６３０ａに重ね合されて接合されるような構成が採られてもよい。この場合、図１０Ａのように、重なり合った部分の第１端子部５３０ａ、６３０ａの厚みと第２端子部５３０ｂ、６３０ｂの厚みが同じであってもよい。あるいは、重なり合った部分の第１端子部５３０ａ、６３０ａの厚みと第２端子部５３０ｂ、６３０ｂの厚みが異なってもよい。厚みが異なる場合、図１０Ｂのように、第２端子部５３０ｂ、６３０ｂの厚みが第１端子部５３０ａ、６３０ａの厚みよりも大きくされるとよい。このようにされれば、第１端子部５３０ａ、６３０ａと一体である第１本体部５１０および第２本体部６１０の厚みが大きくならないため、第１バスバー５００および第２バスバー６００の重量増加、コスト増加などを招きにくい。また、このように第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが別体とされる場合、図１０Ａおよび図１０Ｂに示すように、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの重なり合った部分全体的に半田シートＳによる半田付けが行われるとよい。また、半田付けに替えて、溶接が行われてもよい。さらに、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとを接合するために、屈曲部５３１、６３１を挟んで先端部側と基端部側にリベット止めや圧着が行われてもよい。 Further, in the above-described embodiment, the second terminal portions 530b, 630b are formed of the same material as the first terminal portions 530a, 630a, and are folded back at the distal ends of the first terminal portions 530a, 630a. , 630a. However, as shown in FIGS. 10A and 10B, the second terminal portions 530b and 630b are formed separately from the first terminal portions 530a and 630a, and are overlapped and joined to the first terminal portions 530a and 630a. Such a configuration may be adopted. In this case, as shown in FIG. 10A, the thickness of the first terminal portions 530a and 630a and the thickness of the second terminal portions 530b and 630b in the overlapping portion may be the same. Alternatively, the thickness of the first terminal portions 530a and 630a in the overlapping portion and the thickness of the second terminal portions 530b and 630b may be different. When the thicknesses are different, the thickness of the second terminal portions 530b, 630b may be larger than the thickness of the first terminal portions 530a, 630a, as shown in FIG. 10B. By doing so, the thickness of the first bus bar 500 and the second bus bar 600 is increased because the thickness of the first main body 510 and the second main body 610 integrated with the first terminal portions 530a and 630a does not increase. It is unlikely to increase. When the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are separated from each other, as shown in FIGS. 10A and 10B, the first terminal portions 530a, 630a and the second terminal It is preferable that the entirety of the overlapping portions of the portions 530b and 630b be soldered with the solder sheet S. Also, welding may be performed instead of soldering. Furthermore, in order to join the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, riveting or crimping is performed on the distal end side and the base end side with the bent portions 531, 631 interposed therebetween. Good.
　さらに、上記実施の形態では、第１後接続端子部５３０および第２後接続端子部６３０に、外部端子との接続に用いられる貫通孔５３２、６３２が形成された。しかしながら、図１０Ｃに示すように、第１後接続端子部５３０および第２後接続端子部６３０に、外部端子との接続に用いられる切欠部５３９、６３９が形成されてもよい。切欠部５３９、６３９の形状は、接続される外部端子に対応し、たとえば、Ｕ字形状とされる。切欠部５３９、６３９は、第１端子部５３０ａ、６３０ａに形成された第１切欠部５３９ａ、６３９ａと第２端子部５３０ｂ、６３０ｂに形成された第２切欠部５３９ｂ、６３９ｂにより構成される。このとき、第１切欠部５３９ａ、６３９ａと第２切欠部５３９ｂ、６３９ｂは大きさ（切欠部の幅、切欠部の奥行等）が同じとされる。このようにされると、第１孔５３２ａ、６３２ａと第２孔５３２ｂ、６３２ｂとが径が同じとされる場合と同様、切欠部５３９、６３９の部分で第１後接続端子部５３０および第２後接続端子部６３０の断面積が小さくならず、電気抵抗が大きくならないようにできる。なお、切欠部５３９、６３９は、貫通孔５３２、６３２と同様、バスバー製造工程の接続端子部仕上げ工程で形成することができる。 Further, in the above embodiment, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed with through holes 532 and 632 used for connection with external terminals. However, as shown in FIG. 10C, cutout portions 539 and 639 used for connection with external terminals may be formed in first rear connection terminal portion 530 and second rear connection terminal portion 630. The shapes of the notches 539 and 639 correspond to the external terminals to be connected, and are, for example, U-shaped. The cutouts 539, 639 are constituted by first cutouts 539a, 639a formed in the first terminals 530a, 630a and second cutouts 539b, 639b formed in the second terminals 530b, 630b. At this time, the first notches 539a and 639a and the second notches 539b and 639b have the same size (width of the notch, depth of the notch, and the like). In this manner, the first rear connection terminal portion 530 and the second rear connection terminal portion 530 are formed at the cutout portions 539 and 639, similarly to the case where the first holes 532a and 632a and the second holes 532b and 632b have the same diameter. It is possible to prevent the cross-sectional area of the rear connection terminal portion 630 from being reduced and the electric resistance from being increased. The cutouts 539, 639 can be formed in the connection terminal part finishing step of the bus bar manufacturing step, similarly to the through holes 532, 632.
　さらに、上記実施の形態では、第１端子部５３０ａ、６３０ａの左右の幅と第２端子部５３０ｂ、６３０ｂの左右の幅とが同じであり、両端部が揃っている。しかしながら、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂのうち一方の幅が他方の幅より大きくされるなど、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの両端部が揃ってなくてもよい。また、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが別体である場合には、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂの先端部が揃ってなくてもよい。 Further, in the above embodiment, the left and right widths of the first terminal portions 530a and 630a are the same as the left and right widths of the second terminal portions 530b and 630b, and both end portions are aligned. However, both ends of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, such as making one of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b wider than the other. May not be complete. When the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are separate bodies, the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are not aligned. Is also good.
　さらに、上記実施の形態では、第１後接続端子部５３０および第２後接続端子部６３０の先端部において、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが重ね合された後に、左右の角５３５、６３５にＲ加工が施された。しかしながら、図１１Ａに示すように、第１端子部５３０ａ（６３０ａ）と第２端子部５３０ｂ（６３０ｂ）の境界部分に、これらが重ね合されたときに左右の角５３５（６３５）にＲが形成されるような切欠部５３５ａ（６３５a）が形成される構成が採られてもよい。なお、切欠部５３５ａ（６３５ａ）は、第１端子部５３０ａ（６３０ａ）と第２端子部５３０ｂ（６３０ｂ）が重ね合されたときにＣカット形状を形成するものであってもよい。 Furthermore, in the above embodiment, after the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are superimposed at the distal ends of the first rear connection terminal portion 530 and the second rear connection terminal portion 630. The left and right corners 535 and 635 were rounded. However, as shown in FIG. 11A, R is formed at the left and right corners 535 (635) when these are overlapped at the boundary between the first terminal portion 530a (630a) and the second terminal portion 530b (630b). A configuration in which the notch 535a (635a) is formed as described above may be adopted. Note that the notch 535a (635a) may form a C-cut shape when the first terminal 530a (630a) and the second terminal 530b (630b) are overlapped.
　さらに、第１後接続端子部５３０および第２後接続端子部６３０の端部において、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂとが重ね合された後に、第１孔５３２ａ、６３２ａおよび第２孔５３２ｂ、６３２ｂと、リベット５３３、６３３が通る孔５３４ａ、６３４ａ、５３４ｂ、６３４ｂとが開けられた。しかしながら、図１１Ｂに示すように、第１端子部５３０ａ（６３０ａ）と第２端子部５３０ｂ（６３０ｂ）に、これらが重ね合される前に第１孔５３２ａ（６３２ａ）および第２孔５３２ｂ（６３２ｂ）と、リベット５３３（６３３）が通る孔５３４ａ（６３４ａ）、５３４ｂ（６３４ｂ）が開けられてもよい。なお、第２端子部５３０ｂ（６３０ｂ）を折り返したときの位置ずれを考慮して、第１孔５３２ａ（６３２ａ）および第２孔５３２ｂ（６３２ｂ）のうち一方を他方よりも大きくしてもよい。同様に、第１端子部５３０ａ（６３０ａ）の孔５３４ａ（６３４ａ）および第２端子部５３０ｂ（６３０ｂ）の孔５３４ｂ（６３４ｂ）のうち一方を他方よりも大きくしてもよい。 Furthermore, at the end of the first rear connection terminal portion 530 and the second rear connection terminal portion 630, after the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are overlaid, the first holes 532a, 632a and second holes 532b, 632b, and holes 534a, 634a, 534b, 634b through which rivets 533, 633 pass are opened. However, as shown in FIG. 11B, the first terminal portion 530a (630a) and the second terminal portion 530b (630b) are provided with the first hole 532a (632a) and the second hole 532b (632b) before they are overlapped. ) And holes 534a (634a) and 534b (634b) through which the rivets 533 (633) pass. Note that one of the first hole 532a (632a) and the second hole 532b (632b) may be larger than the other in consideration of a positional shift when the second terminal portion 530b (630b) is folded. Similarly, one of the hole 534a (634a) of the first terminal portion 530a (630a) and the hole 534b (634b) of the second terminal portion 530b (630b) may be larger than the other.
　第１孔５３２ａ、６３２ａおよび第２孔５３２ｂ、６３２ｂと同様に、図１０Ｃの第１切欠部５３９ａ、６３９ａと第２切欠部５３９ｂ、６３９ｂも、第１端子部５３０ａ、６３０ａと第２端子部５３０ｂ、６３０ｂが重ね合される前に開けられてもよい。この場合に、第１切欠部５３９ａ、６３９ａおよび第２切欠部５３９ｂ、６３９ｂのうち一方を他方よりも大きくしてもよい。 Similarly to the first holes 532a, 632a and the second holes 532b, 632b, the first notches 539a, 639a and the second notches 539b, 639b of FIG. , 630b may be opened before they are overlaid. In this case, one of the first notches 539a and 639a and the second notches 539b and 639b may be larger than the other.
　さらに、上記実施の形態では、第１後接続端子部５３０および第２後接続端子部６３０は、第２端子部５３０ｂ、６３０ｂが第１端子部５３０ａ、６３０ａの先端から折り返されて第１端子部５３０ａ、６３０ａに重ね合される構成とされた。しかしながら、第１後接続端子部５３０および第２後接続端子部６３０は、第２端子部５３０ｂ、６３０ｂが第１端子部５３０ａ、６３０ａの左端または右端から折り返されて第１端子部５３０ａ、６３０ａに重ね合される構成とされてもよい。 Further, in the above-described embodiment, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are configured such that the second terminal portions 530b and 630b are folded back from the ends of the first terminal portions 530a and 630a. 530a and 630a. However, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are formed by folding the second terminal portions 530b, 630b from the left end or the right end of the first terminal portions 530a, 630a to form the first terminal portions 530a, 630a. It may be configured to be overlapped.
　さらに、上記実施の形態において、第１バスバー５００の第１前接続端子部５２０および第２バスバー６００の第２前接続端子部６２０も、第１端子部と第２端子部が重ね合された構成とされることで、その厚み（断面積）が大きくなるようにされてもよい。 Furthermore, in the above embodiment, the first front connection terminal portion 520 of the first bus bar 500 and the second front connection terminal portion 620 of the second bus bar 600 also have a configuration in which the first terminal portion and the second terminal portion are overlapped. As a result, the thickness (cross-sectional area) may be increased.
　さらに、上記実施の形態では、コンデンサ素子ユニット１００に６個のコンデンサ素子４００が含まれる。しかしながら、コンデンサ素子４００の個数は、１個である場合も含めて、適宜、変更することができる。 In the above embodiment, the capacitor element unit 100 includes six capacitor elements 400. However, the number of the capacitor elements 400 can be changed as appropriate, including the case where the number is one.
　さらに、上記実施の形態では、コンデンサ素子４００は、誘電体フィルム上にアルミニウムを蒸着させた２枚の金属化フィルムを重ね、重ねた金属化フィルムを巻回または積層することで形成されたものであるが、これ以外にも、誘電体フィルムの両面にアルミニウムを蒸着させた金属化フィルムと絶縁フィルムとを重ね、これを巻回または積層することにより、これらコンデンサ素子４００が形成されてもよい。 Further, in the above embodiment, the capacitor element 400 is formed by stacking two metalized films obtained by evaporating aluminum on a dielectric film, and winding or laminating the stacked metalized films. However, besides this, these capacitor elements 400 may be formed by laminating a metallized film obtained by evaporating aluminum on both surfaces of a dielectric film and an insulating film, and winding or laminating this.
　さらに、上記実施の形態では、本開示のコンデンサの一例として、フィルムコンデンサ１が挙げられた。しかしながら、本開示は、フィルムコンデンサ１以外のコンデンサに適用することもできる。 In the above embodiment, the film capacitor 1 has been described as an example of the capacitor of the present disclosure. However, the present disclosure can be applied to capacitors other than the film capacitor 1.
　この他、本開示の実施の形態は、請求の範囲に示された技術的思想の範囲内において、適宜、種々の変更が可能である。 他 In addition, various modifications can be made to the embodiments of the present disclosure as appropriate within the scope of the technical idea described in the claims.
　なお、上記実施の形態の説明において「上方」「下方」等の方向を示す用語は、構成部材の相対的な位置関係にのみ依存する相対的な方向を示すものであり、鉛直方向、水平方向等の絶対的な方向を示すものではない。 In the description of the above embodiments, terms indicating directions such as “upward” and “downward” indicate relative directions that depend only on the relative positional relationship of the components, and include vertical and horizontal directions. It does not indicate an absolute direction such as.
　本開示は、各種電子機器、電気機器、産業機器、車両の電装等に使用されるコンデンサに有用である。 The present disclosure is useful for capacitors used in various electronic devices, electric devices, industrial devices, vehicle electrical devices, and the like.
　１　フィルムコンデンサ（コンデンサ）
　２００　ケース
　３００　充填樹脂
　４００　コンデンサ素子
　４１０　第１端面電極（電極）
　４２０　第２端面電極（電極）
　５００　第１バスバー（端子部材）
　５２０　第１前接続端子部
　５２１　屈曲部
　５２２　貫通孔
　５３０　第１後接続端子部（接続端子部）
　５３０ａ　第１端子部
　５３０ｂ　第２端子部
　５３１　屈曲部
　５３２　貫通孔
　５３２ａ　第１孔
　５３２ｂ　第２孔
　５３３　リベット
　５３５ａ　切欠部
　５３９　切欠部
　５３９ａ　第１切欠部
　５３９ｂ　第２切欠部
　６００　第２バスバー（端子部材）
　６２０　第２前接続端子部
　６２１　屈曲部
　６２２　貫通孔
　６３０　第２後接続端子部（接続端子部）
　６３０ａ　第１端子部
　６３０ｂ　第２端子部
　６３１　屈曲部
　６３２　貫通孔
　６３２ａ　第１孔
　６３２ｂ　第２孔
　６３３　リベット
　６３９　切欠部
　６３９ａ　第１切欠部
　６３９ｂ　第２切欠部 1 Film capacitors (capacitors)
200 Case 300 Filled resin 400 Capacitor element 410 First end face electrode (electrode)
420 second end face electrode (electrode)
500 1st bus bar (terminal member)
520 first front connection terminal portion 521 bent portion 522 through hole 530 first rear connection terminal portion (connection terminal portion)
530a first terminal portion 530b second terminal portion 531 bent portion 532 through hole 532a first hole 532b second hole 533 rivet 535a cutout portion 539 cutout portion 539a first cutout portion 539b second cutout portion 600 second bus bar (terminal member)
620 second front connection terminal portion 621 bent portion 622 through hole 630 second rear connection terminal portion (connection terminal portion)
630a first terminal portion 630b second terminal portion 631 bent portion 632 through hole 632a first hole 632b second hole 633 rivet 639 cutout portion 639a first cutout portion 639b second cutout portion

Claims (16)

  1. 　コンデンサ素子と、
    　前記コンデンサ素子の電極に接続される端子部材と、を備え、
    　前記端子部材は、前記端子部材の端部に設けられ、外部端子に接続可能な接続端子部を含み、
    　前記接続端子部は、前記端子部材の前記端部から延び出す第１端子部と当該第１端子部に重ね合される第２端子部とを含む、
    　コンデンサ。     A capacitor element;
    A terminal member connected to the electrode of the capacitor element,
    The terminal member is provided at an end of the terminal member, and includes a connection terminal portion connectable to an external terminal,
    The connection terminal portion includes a first terminal portion extending from the end of the terminal member and a second terminal portion superimposed on the first terminal portion.
    Capacitors.
  2. 　請求項１に記載のコンデンサにおいて、
    　前記接続端子部は、前記外部端子との接続に用いられる貫通孔または切欠部を有する、
    　コンデンサ。     The capacitor according to claim 1,
    The connection terminal portion has a through hole or a notch portion used for connection with the external terminal,
    Capacitors.
  3. 　請求項１に記載のコンデンサにおいて、
    　前記接続端子部は、前記外部端子との接続に用いられる貫通孔を有し、
    　前記貫通孔は、前記第１端子部に形成された第１孔と前記第２端子部に形成された第２孔により構成され、
    　前記第１孔の直径と前記第２孔の直径が同じである、
    　コンデンサ。     The capacitor according to claim 1,
    The connection terminal portion has a through hole used for connection with the external terminal,
    The through hole includes a first hole formed in the first terminal portion and a second hole formed in the second terminal portion,
    The diameter of the first hole and the diameter of the second hole are the same,
    Capacitors.
  4. 　請求項１に記載のコンデンサにおいて、
    　前記接続端子部は、前記外部端子との接続に用いられる切欠部を有し、
    　前記切欠部は、前記第１端子部に形成された第１切欠部と前記第２端子部に形成された第２切欠部により構成され、
    　前記第１切欠部の大きさと前記第２切欠部の大きさが同じである、
    　コンデンサ。     The capacitor according to claim 1,
    The connection terminal has a notch used for connection with the external terminal,
    The notch includes a first notch formed in the first terminal and a second notch formed in the second terminal.
    The size of the first notch and the size of the second notch are the same,
    Capacitors.
  5. 　請求項１～４の何れか一項に記載のコンデンサにおいて、
    　前記第２端子部は、前記第１端子部の一端に繋がっており、前記第１端子部の前記一端から折り返されて前記第１端子部に重ね合されている、
    　コンデンサ。     The capacitor according to any one of claims 1 to 4,
    The second terminal portion is connected to one end of the first terminal portion, is folded from the one end of the first terminal portion, and is overlapped with the first terminal portion.
    Capacitors.
  6. 　請求項１～４の何れか一項に記載のコンデンサにおいて、
    　前記第２端子部は、前記第１端子部と別体に設けられて前記第１端子部に重ね合されている、
    　コンデンサ。     The capacitor according to any one of claims 1 to 4,
    The second terminal portion is provided separately from the first terminal portion and is superimposed on the first terminal portion.
    Capacitors.
  7. 　請求項１～６の何れか一項に記載のコンデンサにおいて、
    　前記第１端子部の前記第２端子部と重なり合う部分の厚みは、前記第２端子部の前記第１端子部と重なり合う部分の厚みと同じである、
    　コンデンサ。     The capacitor according to any one of claims 1 to 6,
    The thickness of the portion of the first terminal portion overlapping the second terminal portion is the same as the thickness of the portion of the second terminal portion overlapping the first terminal portion.
    Capacitors.
  8. 　請求項６に記載のコンデンサにおいて、
    　前記第２端子部の前記第１端子部と重なり合う部分の厚みは、前記第１端子部の前記第２端子部と重なり合う部分の厚みよりも大きい、
    　コンデンサ。     The capacitor according to claim 6,
    A thickness of a portion of the second terminal portion overlapping with the first terminal portion is greater than a thickness of a portion of the first terminal portion overlapping with the second terminal portion;
    Capacitors.
  9. 　請求項１～８の何れか一項に記載のコンデンサにおいて、
    　前記第１端子部と前記第２端子部が接合されている、
    　コンデンサ。     The capacitor according to any one of claims 1 to 8,
    The first terminal portion and the second terminal portion are joined,
    Capacitors.
  10. 　請求項９に記載のコンデンサにおいて、
    　前記第１端子部と前記第２端子部がリベットにより接合されている、
    　コンデンサ。     The capacitor according to claim 9,
    The first terminal portion and the second terminal portion are joined by rivets,
    Capacitors.
  11. 　請求項９に記載のコンデンサにおいて、
    　前記第１端子部と前記第２端子部が圧着により接合されている、
    　コンデンサ。     The capacitor according to claim 9,
    The first terminal portion and the second terminal portion are joined by crimping,
    Capacitors.
  12. 　請求項９に記載のコンデンサにおいて、
    　前記第１端子部と前記第２端子部が半田付けまたは溶接により接合されている、
    　コンデンサ。     The capacitor according to claim 9,
    The first terminal portion and the second terminal portion are joined by soldering or welding;
    Capacitors.
  13. 　請求項１～１２の何れか一項に記載のコンデンサにおいて、
    　前記接続端子部は屈曲部を有し、
    　前記第１端子部と前記第２端子部とが重なり合う部分に前記屈曲部が含まれる、
    　コンデンサ。     The capacitor according to any one of claims 1 to 12,
    The connection terminal portion has a bent portion,
    The bent portion is included in a portion where the first terminal portion and the second terminal portion overlap,
    Capacitors.
  14. 　請求項５に記載のコンデンサにおいて、
    　前記接続端子部は屈曲部を有し、
    　前記第１端子部と前記第２端子部とが重なり合う部分に前記屈曲部が含まれ、
    　前記接続端子部において、前記屈曲部に対して前記第１端子部の前記一端とは反対側の部分で、前記第１端子部と前記第２端子部が接合されている、
    　コンデンサ。     The capacitor according to claim 5,
    The connection terminal portion has a bent portion,
    The bent portion is included in a portion where the first terminal portion and the second terminal portion overlap,
    In the connection terminal portion, the first terminal portion and the second terminal portion are joined to each other at a portion of the bent portion that is opposite to the one end of the first terminal portion.
    Capacitors.
  15. 　請求項１～１４の何れか一項に記載のコンデンサにおいて、
    　前記端子部材が接続された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、をさらに備え、
    　前記接続端子部は、前記第１端子部と前記第２端子部とが重なり合う部分における前記接続端子部の先端とは反対側の端部が前記充填樹脂に埋没する、
    　コンデンサ。     The capacitor according to any one of claims 1 to 14,
    A case in which the capacitor element to which the terminal member is connected is housed;
    Further comprising a filling resin to be filled in the case,
    In the connection terminal portion, an end opposite to a tip of the connection terminal portion in a portion where the first terminal portion and the second terminal portion overlap is buried in the filling resin.
    Capacitors.
  16. 　端子部材を製造する工程と、
    　前記端子部材をコンデンサ素子の電極に接続する工程と、を含むコンデンサの製造方法であって、
    　前記端子部材は、前記端子部材の端部に設けられ、外部端子に接続可能な接続端子部を含み、
    　前記接続端子部は、前記端部から延び出す第１端子部と当該第１端子部に重ね合される第２端子部とを含み、
    　前記端子部材を製造する工程が、
    　　展開状態の前記第１端子部と前記第２端子部とを、前記第１端子部と前記第２端子部の間の境界で折り曲げて重ね合せる工程と、
    　　重ね合された前記第１端子部と前記第２端子部とを、前記第１端子部および前記第２端子部の厚み方向にプレスする工程と、を含む、
    　コンデンサの製造方法。     Manufacturing a terminal member;
    Connecting the terminal member to an electrode of a capacitor element, comprising:
    The terminal member is provided at an end of the terminal member, and includes a connection terminal portion connectable to an external terminal,
    The connection terminal portion includes a first terminal portion extending from the end portion and a second terminal portion superimposed on the first terminal portion,
    The step of manufacturing the terminal member,
    Bending the first terminal portion and the second terminal portion in an unfolded state at a boundary between the first terminal portion and the second terminal portion, and superimposing them;
    Pressing the superposed first terminal portion and the second terminal portion in the thickness direction of the first terminal portion and the second terminal portion,
    Manufacturing method of capacitor.
PCT/JP2019/028733 2018-08-08 2019-07-23 Capacitor and method for producing capacitor WO2020031676A1 (en)

Priority Applications (3)

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CN202311025518.6A CN116936259A (en) 2018-08-08 2019-07-23 Capacitor with a capacitor body
CN201980049921.8A CN112514015B (en) 2018-08-08 2019-07-23 Capacitor and method for manufacturing capacitor
JP2020536431A JP7426559B2 (en) 2018-08-08 2019-07-23 Capacitors and capacitor manufacturing methods

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009252935A (en) * 2008-04-04 2009-10-29 Panasonic Corp Case molded capacitor
WO2015012187A1 (en) * 2013-07-22 2015-01-29 株式会社Ｇｓユアサ Electricity storage device and method for manufacturing electricity storage device
JP2018068096A (en) * 2016-10-14 2018-04-26 株式会社デンソー Current sensor device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5154676B2 (en) * 2011-06-29 2013-02-27 双信電機株式会社 Capacitor
JP7050229B2 (en) * 2016-07-21 2022-04-08 パナソニックＩｐマネジメント株式会社 Capacitor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009252935A (en) * 2008-04-04 2009-10-29 Panasonic Corp Case molded capacitor
WO2015012187A1 (en) * 2013-07-22 2015-01-29 株式会社Ｇｓユアサ Electricity storage device and method for manufacturing electricity storage device
JP2018068096A (en) * 2016-10-14 2018-04-26 株式会社デンソー Current sensor device

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JPWO2020031676A1 (en) 2021-08-12
CN112514015B (en) 2023-09-01
CN116936259A (en) 2023-10-24
JP7426559B2 (en) 2024-02-02
CN112514015A (en) 2021-03-16

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