WO2023140104A1 - コンデンサモジュールおよびコンデンサモジュールの製造方法 - Google Patents

コンデンサモジュールおよびコンデンサモジュールの製造方法 Download PDF

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Publication number
WO2023140104A1
WO2023140104A1 PCT/JP2023/000020 JP2023000020W WO2023140104A1 WO 2023140104 A1 WO2023140104 A1 WO 2023140104A1 JP 2023000020 W JP2023000020 W JP 2023000020W WO 2023140104 A1 WO2023140104 A1 WO 2023140104A1
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WO
WIPO (PCT)
Prior art keywords
case
recess
terminal electrode
bus bar
capacitor
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2023/000020
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English (en)
French (fr)
Japanese (ja)
Inventor
賢 城岸
甲児 ▲高▼垣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2023575185A priority Critical patent/JP7747072B2/ja
Priority to CN202380017264.5A priority patent/CN118575245A/zh
Publication of WO2023140104A1 publication Critical patent/WO2023140104A1/ja
Priority to US18/773,852 priority patent/US20240371574A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H01G2/106—Fixing the capacitor in a housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/224—Housing; Encapsulation
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/02—Open installations

Definitions

  • the present invention relates to a capacitor module and a method for manufacturing a capacitor module.
  • a capacitor that uses a laminate film as an exterior material is known.
  • a surface-mount capacitor disclosed in Patent Document 1 has a capacitor element covered with a laminate film.
  • Patent Document 1 The surface mount capacitor described in Patent Document 1 has room for improvement in terms of insulation and miniaturization when modularized.
  • the present invention provides a compact capacitor module with improved insulation and a method for manufacturing the capacitor module.
  • a capacitor module includes one or more capacitor elements each having a main body covered with a laminate film, and a first terminal electrode and a second terminal electrode exposed from the main body; a case housing the one or more capacitor elements; a first bus bar integrally built in the case and electrically connected to the first terminal electrode; a second bus bar integrally built in the case and electrically connected to the second terminal electrode; with The case is formed with one or more recesses for accommodating each of the one or more capacitor elements, the first bus bar has one or a plurality of first connection portions connected to each of the first terminal electrodes of the capacitor element arranged in the recess; The second bus bar has one or a plurality of second connection portions connected to each of the second terminal electrodes of the capacitor elements arranged in the recess.
  • a method for manufacturing a capacitor module includes: preparing a case integrally incorporating a first bus bar and a second bus bar and provided with a recess for accommodating a capacitor element having a first terminal electrode and a second terminal electrode; disposing the capacitor element in the recess of the case; connecting the first bus bar and the first terminal electrode, and connecting the second bus bar and the second terminal electrode; including.
  • FIG. 1 is a perspective view showing a capacitor module according to a first embodiment
  • FIG. 1 is an exploded perspective view of the capacitor module of FIG. Exploded view of the case of the capacitor module in Fig. 1
  • 2 is a perspective view showing a capacitor element of the capacitor module of FIG. 1
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1;
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1;
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor
  • FIG. 4 is a diagram for explaining an example of a manufacturing process of the capacitor module 1;
  • FIG. 4 is a perspective view showing a capacitor module according to a second embodiment;
  • FIG. 9 is an exploded perspective view of the capacitor module of FIG.
  • FIG. 10 is an exploded view of the first case of the capacitor module of FIG. 9
  • FIG. 10 is an exploded view of the second case of the capacitor module of FIG. 9 10 is a perspective view showing a capacitor element of the capacitor module of FIG. 9;
  • FIG. FIG. 10 is a diagram in which the second case of the capacitor module of FIG. 9 is omitted
  • Enlarged cross-sectional view of region R1 cut along CC line in FIG. Flowchart showing a method of manufacturing the capacitor module of FIG. FIG.
  • FIG. 4 is a perspective view showing a capacitor module according to Modification 1 of Embodiment 2;
  • FIG. 17 is an exploded perspective view of the capacitor module of FIG.
  • FIG. 17 is an exploded view of the first case of the capacitor module of FIG. 17 Flowchart showing a method of manufacturing the capacitor module of FIG.
  • Patent Literature 1 discloses a surface-mount capacitor including a capacitor element having lead-out leads and covered with a laminate film, and a fixing plate provided with external connection terminals.
  • the capacitor element covered with a laminate film has excellent weather resistance, so it is not necessary to cover the whole with resin.
  • a capacitor element covered with a laminate film is connected to a busbar and used as a capacitor module, it is difficult to ensure insulation between the terminal electrodes of the capacitor element, and it is difficult to protect the junction between the terminal electrode and the busbar.
  • the present invention (and others) has investigated a capacitor module and a method of manufacturing a capacitor module that can improve the insulation between terminal electrodes and easily protect the joints between the terminal electrodes and the bus bar, resulting in the following inventions.
  • a capacitor module includes: one or more capacitor elements each having a main body covered with a laminate film, and a first terminal electrode and a second terminal electrode exposed from the main body; a case housing the one or more capacitor elements; a first bus bar integrally built in the case and electrically connected to the first terminal electrode; a second bus bar integrally built in the case and electrically connected to the second terminal electrode; with The case is formed with one or more recesses for accommodating each of the one or more capacitor elements, the first bus bar has one or a plurality of first connection portions connected to each of the first terminal electrodes of the capacitor element arranged in the recess; The second bus bar has one or a plurality of second connection portions connected to each of the second terminal electrodes of the capacitor elements arranged in the recess.
  • each of the one or more recesses includes a first recess for arranging the body portion, a second recess for arranging the first terminal electrode, and a third recess for arranging the second terminal electrode;
  • the first connecting portion is located in the second recess,
  • the second connecting portion may be located in the third recess.
  • the capacitor element can be easily positioned with respect to the case, so that the terminal electrodes and the busbar can be easily joined.
  • the second recess and the third recess are formed continuously with the first recess, The second recess and the third recess may be spaced apart from each other.
  • the first recesses may be arranged side by side in the first direction, and the second recesses and the third recesses may be arranged alternately in the first direction.
  • the case may include a first case containing the first bus bar and a second case containing the second bus bar.
  • the first connecting portion is arranged on the outer surface of the first case
  • the second connecting portion is arranged on the outer surface of the second case
  • the first terminal electrode has a first extending portion extending from the capacitor element toward the outer surface of the first case, and a first bent portion extending from the first extending portion along the outer surface of the first case
  • the second terminal electrode may have a second extending portion extending from the capacitor element toward the outer surface of the second case, and a second bent portion extending from the second extending portion along the outer surface of the second case.
  • the terminal electrodes and busbars are connected on the outer surface of the case, so a more compact capacitor module can be provided.
  • the first case and the second case have the same shape
  • the first bus bar and the second bus bar may have the same shape.
  • An opening for exposing the first connecting portion is provided on the outer surface of the first case,
  • the outer surface of the second case may be provided with an opening that exposes the second connecting portion.
  • the capacitor module can be miniaturized, and the terminal electrodes and the bus bars can be easily joined.
  • a method for manufacturing a capacitor module includes: preparing a case integrally incorporating a first bus bar and a second bus bar and provided with a recess for accommodating a capacitor element having a first terminal electrode and a second terminal electrode; disposing the capacitor element in the recess of the case; connecting the first bus bar and the first terminal electrode, and connecting the second bus bar and the second terminal electrode; including.
  • a method for manufacturing a capacitor module according to a tenth aspect of the present invention includes: preparing a first case integrally incorporating a first bus bar and provided with a recess for accommodating a capacitor element having a first terminal electrode and a second terminal electrode; preparing a second case integrally incorporating a second bus bar and provided with a recess for accommodating the capacitor element; disposing the capacitor element in the recess provided in the first case; bending the first terminal electrode and the second terminal electrode; covering the first case with the second case; connecting the first terminal electrode and the first bus bar; connecting the second terminal electrode and the second bus bar; including.
  • Such a configuration facilitates positioning during assembly of the capacitor module, and facilitates joining of the terminal electrodes and the bus bars.
  • FIG. 1 is a perspective view showing a capacitor module 1 according to Embodiment 1.
  • FIG. 2 is an exploded perspective view of the capacitor module 1 of FIG. 1.
  • FIG. 3 is an exploded view of the first case 21 of the capacitor module 1 of FIG. 1.
  • FIG. 4 is a perspective view showing capacitor element 11 of capacitor module 1 of FIG.
  • the X, Y, and Z directions in the drawing indicate the horizontal direction, vertical direction, and height direction of the capacitor module 1, respectively.
  • the capacitor module 1 includes a plurality of capacitor elements 11 (FIG. 2), a case 20, first busbars 31 (FIGS. 3 and 2), and second busbars .
  • Capacitor element 11 has, as shown in FIG. 4 , body portion 12 , first terminal electrode 13 , and second terminal electrode 14 . A body portion 12 of the capacitor element 11 is covered with a laminate film 15 .
  • the capacitor element 11 is, for example, a film capacitor composed of a dielectric film wound body or laminated body.
  • capacitor element 11 is a columnar film capacitor having an oval cross section.
  • a plastic film such as polyethylene terephthalate, polypropylene, polyphenylene sulfide, or polyethylene naphthalate can be used.
  • Metal such as aluminum or zinc can be used as the metal deposition film formed on the surface of the plastic film.
  • End face electrodes (not shown) are formed on both end faces of the capacitor element 11 by metal spraying.
  • a flat first terminal electrode 13 and a flat second terminal electrode 14 are electrically connected to the respective end face electrodes.
  • the first terminal electrode 13 and the second terminal electrode 14 are exposed outside the laminate film 15 from the body portion 12 .
  • the first terminal electrode 13 and the second terminal electrode 14 are formed extending outward from the side surface of the columnar body portion 12 .
  • the moisture resistance of the capacitor element 11 can be ensured.
  • the laminate film 15 a film obtained by bonding a resin film and an aluminum foil together can be used.
  • an aluminum laminate film obtained by laminating an aluminum foil between a heat-sealable resin film such as unstretched polypropylene (CPP) and a resin film having excellent strength such as nylon or polyethylene terephthalate with an adhesive or by thermocompression can be used.
  • An aluminum layer has excellent water vapor barrier properties, and by covering body portion 12 with an aluminum laminate film having an aluminum layer, moisture resistance of capacitor element 11 can be improved.
  • the effects of the present invention are not limited by the constituent materials of the laminate film, and any laminate film material having high adhesiveness between laminate films, vapor barrier properties, strength, or durability can be appropriately employed.
  • three capacitor elements 11 are accommodated in case 20 .
  • Case 20 is a member that accommodates capacitor element 11 .
  • case 20 includes first case 21 formed with three recesses 22 that accommodate capacitor element 11 and second case 26 that covers first case 21 .
  • a first bus bar 31 and a second bus bar 36 are integrally built in the first case 21 of the case 20 .
  • the first case 21 corresponds to the main body of the case 20 and the second case 26 corresponds to the lid of the case 20 .
  • the recess 22 of the first case 21 includes a first recess 23, a second recess 24, and a third recess 25, as shown in FIG.
  • the first concave portion 23 is a concave portion for arranging the body portion 12
  • the second concave portion 24 is a concave portion for arranging the first terminal electrode 13
  • the third concave portion 25 is a concave portion for arranging the second terminal electrode 14.
  • the first terminal electrode 13 of the capacitor element 11 is arranged in the second recess 24, and the second terminal electrode 14 of the capacitor element 11 is arranged in the third recess 25.
  • the first recess 23 and the second recess 24, and the first recess 23 and the third recess 25 are formed continuously.
  • the first concave portions 23 are arranged in a row in the horizontal direction (first direction) so that the three capacitor elements 11 can be arranged in a row.
  • the second recesses 24 and the third recesses 25 are alternately arranged in the first direction with a space therebetween.
  • the second case 26 is a member for covering the first case 21 and accommodating the capacitor element 11 inside the case 20 .
  • three capacitor elements 11 can be accommodated in case 20 such that first case 21 and second case 26 sandwich three capacitor elements 11 .
  • the second case 26 is provided with a hook 26a
  • the first case 21 is provided with a recess 21a.
  • the second case 26 can be fixed to the first case 21 by engaging the hook 26a with the recess 21a.
  • the fixing between the first case 21 and the second case 26 is not limited to hooks, and may be performed by any means such as fastening the first case 21 and the second case 26 with screws, for example.
  • the outer surface of the first case 21 is provided with a fixing portion 21b for fixing the capacitor module 1 to an external substrate, device, or the like.
  • the capacitor module 1 can be fixed to an external substrate, device, or the like by fastening a screw or the like to the fixing portion 21b.
  • synthetic resins such as polyphenylene sulfide, polybutylene terephthalate, or liquid crystal polymer can be used as materials for forming the first case 21 and the second case 26 .
  • These materials are preferably blended with glass fibers or inorganic fillers in order to improve dimensional stability or strength.
  • First bus bar 31 is connected to first terminal electrode 13 of capacitor element 11 .
  • Second bus bar 36 is connected to second terminal electrode 14 of capacitor element 11 .
  • the first bus bar 31 and the second bus bar 36 electrically connect the capacitor element 11 to an external substrate, device, or the like by being connected to electrodes (not shown) of an external substrate, device, or the like.
  • the first bus bar 31 and the second bus bar 36 are integrally incorporated in the first case 21 by, for example, insert molding, and partially exposed from the first case 21, as shown in FIG.
  • the first busbar 31 and the second busbar 36 are separated by the resin of the first case 21 .
  • the first busbar 31 and the second busbar 36 are made of a plate-shaped conductive member such as copper, brass, or aluminum. Among them, it is preferable to use pure copper called oxygen-free copper or tough pitch copper, which has excellent conductivity.
  • a metal film such as nickel or tin may be formed on the surfaces of the first bus bar 31 and the second bus bar 36 by plating or the like.
  • the first bus bar 31 has a first connection portion 32 connected to the first terminal electrode 13, as shown in FIGS.
  • the first connecting portion 32 is exposed from the first case 21 so as to be positioned in the second recess 24 .
  • the second bus bar 36 also has a second connection portion 37 that is connected to the second terminal electrode 14 .
  • the second connecting portion 37 is exposed from the first case 21 so as to be positioned in the third concave portion 25 .
  • FIG. 5 is a cross-sectional view of the capacitor module 1 of FIG. 1 taken along line AA.
  • FIG. 6 is a BB cross-sectional view of the capacitor module 1 of FIG.
  • first terminal electrode 13 is accommodated in the second recess 24, and the first terminal electrode 13 is arranged on the first connection portion 32 of the first bus bar 31. That is, in the height direction (Z direction), the first terminal electrode 13 and the first connection portion 32 overlap and contact each other. Therefore, by arranging main body portion 12 of capacitor element 11 in first recess 23 (recess 22 ), first terminal electrode 13 can be positioned at first connecting portion 32 of first bus bar 31 .
  • the first terminal electrode 13 is positioned by the second recess 24 .
  • the first terminal electrode 13 and the first connecting portion 32 of the first bus bar 31 are electrically connected by, for example, ultrasonic welding.
  • the second terminal electrode 14 is accommodated in the third recess 25, and the second terminal electrode 14 is arranged on the second connection portion 37 of the second bus bar 36. That is, in the height direction (Z direction), the second terminal electrode 14 and the second connection portion 37 overlap and contact each other. Therefore, by disposing the capacitor element 11 in the concave portion 22 , the second terminal electrode 14 can be positioned at the second connection portion 37 of the second bus bar 36 .
  • the second terminal electrode 14 is positioned by the third concave portion 25 .
  • the second connection portion 37 of the second bus bar 36 and the second terminal electrode 14 are electrically connected by, for example, ultrasonic welding.
  • the terminal electrodes 13 and 14 can be positioned, so workability during ultrasonic welding can be improved.
  • the first bus bar 31 and the second bus bar 36 are separated by the resin of the first case 21 . Therefore, insulation between the first bus bar 31 and the second bus bar 36 can be ensured.
  • FIG. 7 is a flow chart showing a method of manufacturing the capacitor module 1. As shown in FIG. 8A to 8D are diagrams illustrating an example of the manufacturing process of the capacitor module 1. FIG. A method of manufacturing the capacitor module 1 will be described with reference to FIGS. 7 to 8D.
  • a case 20 is prepared (step S11).
  • the first case 21 and the second case 26 are formed in step S11.
  • the first case 21 can be integrally formed with the first busbar 31 and the second busbar 36 by, for example, insert molding.
  • Three recesses 22 are formed in the first case 21.
  • the first connecting portion 32 of the first bus bar 31 is arranged in the second recess 24
  • the second connecting portion 37 of the second bus bar 36 is arranged in the third recess 25 .
  • the second case 26 can be formed by injection molding, for example.
  • the capacitor elements 11 are arranged in each of the three recesses 22 of the first case 21 (step S12).
  • the first terminal electrode 13 overlaps the first connection portion 32 in the height direction
  • the second terminal electrode 14 overlaps the second connection portion 37 in the height direction.
  • an adhesive or the like may be used when arranging the capacitor element 11 in the first case 21 .
  • the first bus bar 31 and the first terminal electrode 13 are connected, and the second bus bar 36 and the second terminal electrode 14 are connected (step S13).
  • the first connection portion 32 and the first terminal electrode 13 are welded together by, for example, applying ultrasonic vibration to the overlapping portion of the first connection portion 32 and the first terminal electrode 13 of the first bus bar 31 .
  • the first welded portion 13a is formed by ultrasonic welding.
  • the second connection portion 37 and the second terminal electrode 14 are welded by applying, for example, ultrasonic vibration to the overlapping portion of the second connection portion 37 and the second terminal electrode 14 of the second bus bar 36 .
  • the second welded portion 14a is formed by ultrasonic welding.
  • the connecting portions 32, 37 and the terminal electrodes 13, 14 are electrically connected by welding.
  • the capacitor module 1 is completed.
  • the capacitor module 1 includes three capacitor elements 11 , a case 20 , a first busbar 31 and a second busbar 36 .
  • Capacitor element 11 has main body portion 12 covered with laminate film 15 , and first terminal electrode 13 and second terminal electrode 14 exposed from main body portion 12 .
  • Case 20 accommodates capacitor element 11 .
  • Case 20 is formed with three recesses 22 that accommodate respective capacitor elements 11 .
  • the first bus bar 31 is integrally built into the case 20 and has a first connection portion 32 electrically connected to the first terminal electrode 13 .
  • the second bus bar 36 is integrally built into the case 20 and has a second connection portion 37 electrically connected to the second terminal electrode 14 .
  • the insulation between the busbars 31 and 36 can be ensured, so it is possible to provide the capacitor module 1 with improved insulation.
  • the busbars 31 and 36 are integrally built into the first case 21 (case 20), a compact capacitor module 1 can be provided.
  • the recessed portion 22 includes a first recessed portion 23 , a second recessed portion 24 and a third recessed portion 25 .
  • Body portion 12 of capacitor element 11 is arranged in first recess 23 .
  • the first terminal electrode 13 of the capacitor element 11 is arranged in the second concave portion 24 .
  • the third recess 25 arranges the second terminal electrode 14 of the capacitor element 11 .
  • the first connecting portion 32 of the first busbar 31 is positioned in the second recess 24 .
  • a second connection portion 37 of the second bus bar 36 is located in the third recess 25 .
  • the second recess 24 and the third recess 25 are formed continuously with the first recess 23 .
  • the second recess 24 and the third recess 25 are spaced apart from each other.
  • the first concave portions 23 are arranged side by side in the first direction (X direction), and the second concave portions 24 and the third concave portions 25 are arranged side by side alternately in the first direction.
  • the space inside the case 20 can be effectively used, which contributes to miniaturization of the capacitor module 1 .
  • the manufacturing method of the capacitor module 1 includes the steps of forming the case 20, arranging the capacitor element 11 in the case 20, and connecting the busbars 31, 36 and the terminal electrodes 13, 14.
  • Capacitor module 1 may comprise one or more capacitor elements 11 .
  • Capacitor element 11 may be formed in a cylindrical shape, for example.
  • Capacitor element 11 may be a wound film capacitor or a laminated film capacitor.
  • Capacitor element 11 may have a plurality of first terminal electrodes 13 and second terminal electrodes 14 .
  • Metal terminals that are not connected to end face electrodes may be exposed from body portion 12 of capacitor element 11 . In this case, the heat dissipation of the capacitor module 1 can be improved.
  • a concave portion for arranging and positioning the metal terminal may be provided in the case.
  • busbars 31, 36 and the terminal electrodes 13, 14 are joined by ultrasonic welding
  • the busbars 31, 36 and the terminal electrodes 13, 14 can be electrically connected by soldering, resistance welding, laser welding, or the like, for example.
  • first case 21 and the second case 26 are fixed by the hook 26a provided on the second case 26 and the recess 21a provided on the first case 21
  • the present invention is not limited to this.
  • the first case 21 and the second case 26 can be fixed by screws, adhesive, or the like, for example.
  • a thermal pad or the like having high thermal conductivity and flexibility may be arranged between the capacitor element 11 and the case 20 .
  • the thermal pad has flexibility, it can absorb the impact on the capacitor element 11 and improve the durability of the capacitor module 1 .
  • FIG. 9 is a perspective view showing the capacitor module 2 according to the second embodiment.
  • 10 is an exploded perspective view of the capacitor module 2 of FIG. 9.
  • FIG. 11 is an exploded view of the first case 121 of the capacitor module 2 of FIG. 9.
  • FIG. 12 is an exploded view of the second case 126 of the capacitor module 2 of FIG. 9.
  • FIG. 13 is a perspective view showing the capacitor element 111 of the capacitor module 2 of FIG. 9.
  • FIG. FIG. 14 is a diagram in which the second case 126 of the capacitor module 2 of FIG. 9 is omitted.
  • FIG. 15 is an enlarged cross-sectional view of region R1 cut along line CC in FIG.
  • the second embodiment differs from the first embodiment in that the case 120 includes a first case 121 and a second case 126, the first case 121 has a built-in first bus bar 131, and the second case 126 has a built-in second bus bar 136. That is, it is different from the first embodiment in that the two busbars 131 and 136 are not built in one of the cases 120 divided into two, but busbars 131 and 136 are built in both cases separately.
  • first connecting portion 132 of the first bus bar 131 is located on the outer surface of the first case 121
  • second connecting portion 137 of the second bus bar 136 is located on the outer surface of the second case 126, which is different from the first embodiment. That is, it differs from the first embodiment in that the connection points between bus bars 131 and 136 and capacitor element 111 are not provided inside case 120 but are exposed on the outer surface of case 120 .
  • first terminal electrode 113 and the second terminal electrode 114 of the capacitor element 111 differ from the first embodiment in that they have extended portions 113a, 114a and bent portions 113b, 114b. That is, it differs from the first embodiment in that the terminal electrodes 113 and 114 are bent instead of extending in one direction.
  • the case 120 of the capacitor module 2 is composed of a first case 121 and a second case 126.
  • a first bus bar 131 is integrally incorporated in the first case 121 (FIG. 11)
  • a second bus bar 136 is integrally incorporated in the second case 126 (FIG. 12).
  • the first case 121 and the second case 126 are fixed to each other by fastening screws or the like to fixing portions 121a and 126a provided respectively.
  • the fixing portions 121a and 126a can also be used when fixing the capacitor module 2 to an external board or device.
  • first case 121 and second case 126 have the same shape
  • first bus bar 131 and second bus bar 136 also have the same shape.
  • a concave portion 122 is formed in the first case 121 as in the first embodiment.
  • recess 122 includes first recess 123 , second recess 124 , and third recess 125 .
  • the first recess 123 and the second recess 124 are formed continuously, and the first recess 123 and the third recess 125 are formed continuously.
  • the second case 126 is also formed with a first recess, a second recess, and a third recess.
  • the outer side surface 121c of the first case 121 is provided with an opening 121b.
  • the outer side surface 126c of the second case 126 is provided with an opening 126b.
  • the first connecting portion 132 of the first bus bar 131 is positioned at the opening 121 b of the first case 121 .
  • the second connecting portion 137 of the second bus bar 136 is located in the opening 126b of the second case 126. As shown in FIG.
  • the first terminal electrode 113 of the capacitor element 111 has a first extending portion 113a extending from the body portion 112 of the capacitor element 111 toward the outer surface 121c of the first case 121, and a first bent portion 113b extending from the first extending portion 113a along the outer surface 121c of the first case 121.
  • the second terminal electrode 114 of the capacitor element 111 has a second extension portion 114a extending from the body portion 112 of the capacitor element 111 toward the outer surface 126c of the second case 126, and a second bent portion 114b that extends from the second extension portion 114a along the outer surface 126c of the second case 126.
  • the first bent portion 113b of the first terminal electrode 113 and the second bent portion 114b of the second terminal electrode 114 extend in opposite directions. That is, the first extension portion 113a of the first terminal electrode 113 extends downward ( ⁇ Z direction), and the second extension portion 114a of the second terminal electrode 114 extends upward (+Z direction).
  • the opening 121b of the first case 121 communicates with the second recess 124 via the slit 124a.
  • the first connecting portion 132 of the first bus bar 131 and the first bent portion 113b of the first terminal electrode 113 can overlap in the vertical direction (Y direction) in the opening 121b.
  • the first terminal electrode 113 and the first bus bar 131 can be electrically connected by, for example, joining the overlapped portion of the first connecting portion 132 and the first bent portion 113b by ultrasonic welding through the opening 121b.
  • the second terminal electrode 114 and the second bus bar 136 are also electrically connected in the same manner.
  • a third recess (not shown) in which the second terminal electrode 114 is arranged and the opening 126b communicate with each other through a slit.
  • FIG. 16 is a flow chart showing a method of manufacturing the capacitor module 2 of FIG. A method of manufacturing the capacitor module 2 will be described with reference to FIG.
  • the first case 121 is prepared (step S21).
  • the first case 121 can be formed by insert molding, for example.
  • First case 121 is formed with recess 122 that accommodates capacitor element 111 .
  • the recess 122 includes a first recess 123, a second recess 124 and a third recess 125 as shown in FIG.
  • the second case 126 is prepared (step S22).
  • the second case 126 can be formed by insert molding, for example.
  • a concave portion is formed in the second case 126 as well as in the first case 121 .
  • first case 121 and the second case 126 have the same shape, the same mold can be used to form the first case 121 and the second case 126 .
  • the capacitor element 111 is arranged in the concave portion 122 of the first case 121 (step S23).
  • the tip of the first terminal electrode 113 is bent to form the first bent portion 113b in advance.
  • the tip of the second terminal electrode 114 is bent to form a second bent portion 114b in advance.
  • the second case 126 After placing the capacitor element 111 on the first case 121, the second case 126 is put over the first case 121 and fixed (step S24). At this time, the second bent portion 114 b is inserted into the slit of the second case 126 .
  • the first bus bar 131 and the first terminal electrode 113 are connected (step S25).
  • the second bus bar 136 and the second terminal electrode 114 are connected (step S26).
  • the terminal electrodes 113 and 114 and the bus bars 131 and 136 are arranged to overlap each other in the vertical direction (Y direction). Therefore, the terminal electrodes 113, 114 and the bus bars 131, 136 can be easily joined by welding, for example.
  • connection between the busbars 131, 136 and the terminal electrodes 113, 114 can be performed, for example, by ultrasonic welding.
  • the capacitor module 2 is completed by connecting the busbars 131 and 136 and the terminal electrodes 113 and 114 .
  • the case 120 includes a first case 121 and a second case 126.
  • a first bus bar 131 is incorporated in the first case 121 .
  • a second bus bar 136 is built in the second case 126 .
  • the busbars 131 and 136 are built in the first case 121 and the second case 126, respectively. Therefore, compared to the first embodiment, the size in the vertical direction (Y direction) can be reduced, which contributes to miniaturization of the capacitor module 2.
  • the first connecting portion 132 of the first busbar 131 is arranged on the outer surface 121c of the first case 121, and the second connecting portion 137 of the second busbar 136 is arranged on the outer surface 126c of the second case 126.
  • the first terminal electrode 113 has a first extending portion 113a extending from the capacitor element 111 toward the outer surface 121c of the first case 121, and a first bent portion 113b extending from the first extending portion 113a along the outer surface 121c of the first case 121.
  • the second terminal electrode 114 has a second extending portion 114a extending from the capacitor element 111 toward the outer surface 126c of the second case 126, and a second bent portion 114b extending from the second extending portion 114a toward the outer surface 126c of the second case 126.
  • terminal electrodes 113 and 114 are bent, it is possible to save space and contribute to miniaturization of the capacitor module 2 .
  • the first case 121 and the second case 126 have the same shape, and the first busbar 131 and the second busbar 136 have the same shape.
  • first case 121 and the second case 126 have the same shape, and the first busbar 131 and the second busbar 136 have the same shape, it is possible to reduce the number of parts and the number of molds of the capacitor module 2, thereby suppressing the manufacturing cost.
  • the outer surface 121c of the first case 121 is provided with an opening 121b for exposing the first connecting portion 132
  • the outer surface 126c of the second case 126 is provided with an opening 126b for exposing the second connecting portion 137.
  • the capacitor module 2 can be further miniaturized.
  • the method of manufacturing the capacitor module 2 includes the steps of preparing a first case 121, preparing a second case 126, arranging the capacitor element 111 in the first case 121, covering the first case 121 with the second case 126, and connecting the bus bars 131, 136 and the terminal electrodes 113, 114.
  • the capacitor element 111 When assembling the capacitor module 2, the capacitor element 111 is positioned by the concave portion 122, which facilitates assembly.
  • the terminal electrodes 113 and 114 have the bent portions 113b and 114b, the bent portions 113b and 114b can be exposed from the outer surfaces 121c and 126c of the cases 121 and 126, so that the terminal electrodes and the bus bar can be easily joined.
  • [Modification] 17 is a perspective view showing a capacitor module 3 according to Modification 1 of Embodiment 2.
  • FIG. 18 is an exploded perspective view of the capacitor module 3 of FIG. 17.
  • FIG. 19 is an exploded view of the first case 221 of the capacitor module 3 of FIG. 17.
  • the second recess 224 of the first case 221 and the opening 221b may be formed continuously without a slit.
  • the opening 221 b of the first case 221 may be a recess formed in the outer side surface 221 c of the first case 221 and continuous with the first recess 223 .
  • the second case 226 has the same shape as the first case 221, and is formed with recesses (not shown) including first to third recesses and an opening 226b.
  • first connecting portion 232 of the first bus bar 231 is positioned at the opening 221 b of the first case 221
  • the second connecting portion 237 of the second bus bar 236 is positioned at the opening 226 b of the second case 226 .
  • first case 221 and the second case 226 can be fixed by fastening with screws or the like using fixing portions 221a and 226a provided in the cases 221 and 226, respectively.
  • FIG. 20 is a flow chart showing the manufacturing method of the capacitor module 3 of FIG. A method of manufacturing the capacitor module 3 will be described with reference to FIG. Note that steps S31-32 and steps S35-37 are the same as steps S21-22, steps S24-26 of FIG.
  • the capacitor element 211 is arranged in the concave portion 222 of the first case 221 (step S33). At this time, the capacitor element 211 has flat terminal electrodes as shown in FIG. Positioning of capacitor element 211 is facilitated by provision of concave portion 222 in first case 221 .
  • the tip of the first terminal electrode 213 is bent along the outer surface 221c of the first case 221 to form the first bent portion 213b
  • the tip of the second terminal electrode 214 is bent along the outer surface 226c of the second case 226 to form the second bent portion 214b (step S34).
  • the second case 226 is arranged, and the busbars 231, 236 and the terminal electrodes 213, 214 are connected to complete the capacitor module 3 (steps S5-37).
  • the second case 226 can be placed on the first case 221 after the capacitor element 211 is placed in the recess 222 of the first case 221 and the bent portions 213b and 214b are formed, which facilitates the assembly of the capacitor module 3.
  • the present invention is useful for capacitor modules used in various electronic devices, electrical devices, industrial devices, vehicle devices, and the like.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
PCT/JP2023/000020 2022-01-18 2023-01-04 コンデンサモジュールおよびコンデンサモジュールの製造方法 Ceased WO2023140104A1 (ja)

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JP2023575185A JP7747072B2 (ja) 2022-01-18 2023-01-04 コンデンサモジュールおよびコンデンサモジュールの製造方法
CN202380017264.5A CN118575245A (zh) 2022-01-18 2023-01-04 电容器模块以及电容器模块的制造方法
US18/773,852 US20240371574A1 (en) 2022-01-18 2024-07-16 Capacitor module and method for fabricating capacitor module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026070058A1 (ja) * 2024-09-24 2026-04-02 株式会社村田製作所 フィルムコンデンサ

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN120727456B (zh) * 2025-09-02 2025-12-26 四川省科学城久信科技有限公司 一种用于电网的非金属封装柔直电容器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11111250A (ja) * 1997-10-06 1999-04-23 Japan Storage Battery Co Ltd 電 池
JP2000306556A (ja) * 1999-04-23 2000-11-02 Yuasa Corp 枠付き電池
JP2004356027A (ja) * 2003-05-30 2004-12-16 Sanyo Electric Co Ltd 薄型バッテリパック
US20130027840A1 (en) * 2011-07-25 2013-01-31 Samsung Electro-Mechanics Co., Ltd. Energy storage module
JP2013518387A (ja) * 2010-02-01 2013-05-20 エルジー・ケム・リミテッド 新規構造のバッテリーセルアセンブリ及び同じものが採用されたバッテリーパック
CN204011495U (zh) * 2014-07-25 2014-12-10 浙江超威创元实业有限公司 一种软包电芯模块化结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11111250A (ja) * 1997-10-06 1999-04-23 Japan Storage Battery Co Ltd 電 池
JP2000306556A (ja) * 1999-04-23 2000-11-02 Yuasa Corp 枠付き電池
JP2004356027A (ja) * 2003-05-30 2004-12-16 Sanyo Electric Co Ltd 薄型バッテリパック
JP2013518387A (ja) * 2010-02-01 2013-05-20 エルジー・ケム・リミテッド 新規構造のバッテリーセルアセンブリ及び同じものが採用されたバッテリーパック
US20130027840A1 (en) * 2011-07-25 2013-01-31 Samsung Electro-Mechanics Co., Ltd. Energy storage module
CN204011495U (zh) * 2014-07-25 2014-12-10 浙江超威创元实业有限公司 一种软包电芯模块化结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026070058A1 (ja) * 2024-09-24 2026-04-02 株式会社村田製作所 フィルムコンデンサ

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JP7747072B2 (ja) 2025-10-01

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