CN112514015A - Capacitor and method for manufacturing capacitor - Google Patents
Capacitor and method for manufacturing capacitor Download PDFInfo
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- CN112514015A CN112514015A CN201980049921.8A CN201980049921A CN112514015A CN 112514015 A CN112514015 A CN 112514015A CN 201980049921 A CN201980049921 A CN 201980049921A CN 112514015 A CN112514015 A CN 112514015A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 110
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 5
- 238000005304 joining Methods 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 22
- 238000010586 diagram Methods 0.000 description 15
- 238000005452 bending Methods 0.000 description 11
- 239000011104 metalized film Substances 0.000 description 10
- 238000003825 pressing Methods 0.000 description 10
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007730 finishing process Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000003685 thermal hair damage Effects 0.000 description 3
- 210000002105 tongue Anatomy 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The capacitor 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 portion of the terminal member and connectable to an external terminal. The connection terminal portion includes a first terminal portion extending from an end of the terminal member and a second terminal portion overlapping the first terminal portion.
Description
Technical Field
The present disclosure relates to a capacitor and a method of manufacturing the capacitor.
Background
Conventionally, the following capacitors are known: the capacitor element to which one end of the bus bar is connected is housed in a case, and an external connection terminal provided at the other end of the bus bar is drawn out to the outside from an opening of the case (for example, see patent document 1). The external connection terminal is provided to extend from an end of the bus bar, and an external terminal provided in an external device is connected to the terminal.
[ Prior art documents ]
[ patent document ]
Patent document 1: japanese patent laid-open publication No. 2009-252935
Disclosure of Invention
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 portion 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 overlapping 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 portion 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 overlapping the first terminal portion. The process of manufacturing the terminal member includes the steps of: a step of folding and overlapping the first terminal portion and the second terminal portion in the spread state at a boundary between the first terminal portion and the second terminal portion; and pressing the overlapped first terminal portion and second terminal portion in a thickness direction of the first terminal portion and second terminal portion.
According to the present disclosure, a capacitor in which thermal damage of a capacitor element is difficult to generate can be provided.
The effects and significance of the present disclosure will be more apparent from the description of the embodiments shown below. The embodiments described below are merely examples for implementing the present disclosure, and the present disclosure is not limited to the contents described in the embodiments below.
Drawings
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 a second bus bar according to the embodiment.
Fig. 4A is a perspective view showing a main portion of the first bus bar around the first rear connection terminal portion according to the embodiment.
Fig. 4B is a perspective view showing a main portion of the second bus bar around the second rear connection terminal portion according to the embodiment.
Fig. 5A is a cross-sectional view of a main portion of the thin-film capacitor in the periphery of the first rear connection terminal portion of the first bus bar according to the embodiment.
Fig. 5B is a cross-sectional view showing a main portion of the thin-film capacitor in the periphery of the second rear connection terminal portion 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 connecting terminal portion bending step according to the embodiment.
Fig. 8A is a diagram illustrating a connection terminal portion pressing step according to the embodiment.
Fig. 8B is a diagram illustrating a connecting terminal portion finishing process according to the embodiment.
Fig. 9A is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 9B is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 10A is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 10B is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 10C is a diagram illustrating the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 11A is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Fig. 11B is a diagram for explaining the first rear connection terminal portion and the second rear connection terminal portion according to the modification.
Detailed Description
Before describing the embodiment, problems in the prior art will be briefly described. The terminal for external connection is likely to have a smaller width in a direction perpendicular to the flow of current than the main body portion of the bus bar on the capacitor element side, and is likely to have a smaller cross-sectional area in the width direction even if the thickness is the same as the main body portion, and therefore, the resistance is likely to be increased. Therefore, when the current flowing from the external device to the capacitor is increased, the terminal for external connection is likely to generate heat and become high temperature. When the external connection terminal has a high temperature, if the heat is transmitted to the capacitor element via the bus bar, the capacitor element may be thermally damaged.
In recent years, along with the spread of electric vehicles, capacitors have been used for electric vehicles. For example, a capacitor can be mounted on an inverter unit for driving a motor or the like. When power is supplied from the power supply device to the converter unit, an external terminal connected to the power supply device is connected to a terminal for external connection of the capacitor. In such a case, a large current flows from the power supply device to the capacitor, and heat is easily generated at the external connection terminal due to the flow of the large current. This easily causes thermal damage to the capacitor element.
In view of such problems, the present disclosure provides a capacitor in which thermal damage of a capacitor element is less likely to occur.
Hereinafter, a film capacitor 1 as an embodiment of the capacitor of the present disclosure will be described with reference to the drawings. For convenience, the drawings are appropriately labeled with the front-back, left-right, and up-down directions. The directions shown in the drawings are merely relative to the film capacitor 1 and do not represent absolute directions.
In the present embodiment, the film capacitor 1 corresponds to a "capacitor" described in claims. The first end surface electrode 410 and the second end surface electrode 420 correspond to "electrodes" described in claims. Further, the first bus bar 500 and the second bus bar 600 correspond to the "terminal member" described in the claims. Further, the first rear connecting terminal portion 530 and the second rear connecting terminal portion 630 correspond to "connecting terminal portions" described in claims.
However, the above description is only for the purpose of associating the structure of the claims with the structure of the embodiment, and the disclosure described in the claims is not limited to the structure of the embodiment by the association described above.
Fig. 1 is a perspective view of a film capacitor 1.
Referring to fig. 1, film capacitor 1 includes capacitor element unit 100, case 200, and filling resin 300. Capacitor element unit 100 is housed in case 200, and filling resin 300 is filled in case 200. 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 capacitor element unit 100 and case 200 before capacitor element unit 100 is housed in 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.
Referring to fig. 2, 3A, and 3B, the capacitor element unit 100 includes 6 capacitor elements 400, a first bus bar 500, a second bus bar 600, a first insulating sheet 700, and a second insulating sheet 800.
The first bus bar 500 is formed by appropriately cutting and bending a conductive material such as a copper plate, and has a structure in which a first main body portion 510, 3 first front connection terminal portions 520, and a first rear connection terminal portion 530 are integrated.
The first body portion 510 includes a terminal surface portion 510a and a front surface portion 510 b. Terminal surface portion 510a has a substantially rectangular shape in which a portion near the right end of the rear end portion protrudes slightly rearward, and covers first end surface electrodes 410 of 6 capacitor elements 400 from above. The terminal surface portion 510a has first electrode terminals 512 formed at the front edges of 6 openings 511 arranged in the left-right direction. In the terminal surface portion 510a, 4 first electrode terminals 512 are formed at the rear end portion, and 3 first electrode terminals 512 are formed at the right end portion. The 2 first electrode terminals 512 are in contact with the first end surface electrodes 410 of the capacitor elements 400, and these first electrode terminals 512 and the first end surface electrodes 410 are joined by a joining method such as soldering. Thereby, the first bus bar 500 is electrically connected to the first end surface electrodes 410 of the 6 capacitor elements 400. The front surface portion 510b has an elongated substantially rectangular shape, and rises from the front edge portion of the terminal surface portion 510 a. The upper end portion of the front surface portion 510b is bent to protrude forward.
In the first body portion 510, 2 circular flow holes 513 are formed in the terminal surface portion 510 a. There is no capacitor element 400 under 2 flow holes 513. Further, in the first body portion 510, an oval flow hole 514 is formed across the terminal surface portion 510a and the front surface portion 510 b. The 3 first front connection terminal portions 520 are arranged at the upper end portion of the front surface portion 510b 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. In the first front connection terminal portion 520, a circular through hole 522 is formed on the front end side of the bent portion 521.
The first rear connection terminal portion 530 is provided at a rear end portion of the terminal surface portion 510a, which is an end portion on the rear side of the first bus bar 500. The first rear connection terminal 530 has a hook shape extending upward and then bent to extend rearward. In the first rear connecting terminal portion 530, a circular through hole 532 is formed on the front end side of the bent portion 531. The detailed structure of the first rear connecting terminal 530 will be described later.
The second bus bar 600 is formed by appropriately cutting and bending a conductive material such as a copper plate, and has a structure in which the second main body portion 610, the 3 second front connecting terminal portions 620, and the second rear connecting terminal portions 630 are integrated.
The second body portion 610 includes a terminal face portion 610a, a front surface portion 610b, and a rear surface portion 610 c. Terminal surface portion 610a has a substantially rectangular shape, and covers second end surface electrodes 420 of 6 capacitor elements 400 from below. In the terminal surface portion 610a, a total of 12 openings 611 of 2 in the front-rear direction and 6 in the left-right direction are formed, and a second electrode terminal 612 is formed at the front edge of each opening 611. The 2 second electrode terminals 612 are in contact with the second end face electrodes 420 of the capacitor elements 400, and these second electrode terminals 612 and second end face electrodes 420 are joined by a joining method such as soldering. Thereby, the second bus bar 600 is electrically connected to the second end face electrodes 420 of the 6 capacitor elements 400. The front surface portion 610b has a rectangular shape with a high height at a left side portion thereof, and a rectangular shape with a low height at a right side portion thereof, and rises from a front edge portion of the terminal surface portion 610 a. An upper end portion of a left side portion of the front surface portion 610b is bent to protrude forward. The rear surface portion 610c has a rectangular shape and rises from the rear edge portion of the terminal surface portion 610 a.
In the second body portion 610, 2 circular flow holes 613 are formed in the terminal surface portion 610 a. There is no capacitor element 400 over 2 flow holes 613. In addition, in the second body portion 610, 2 oval flow holes 614 are formed across the terminal surface portion 610a and the front surface portion 610 b.
In fig. 3B, the front 6 openings 611, the second electrode terminal 612, and the left flow hole 613 are hidden in the front surface portion 610B.
The 3 second front connection terminal portions 620 are disposed at an upper end portion of a left side portion of the front surface portion 610b to be aligned in the left-right direction at equal intervals. The second front connection terminal portion 620 has a hook shape that extends upward, then bends, and extends forward. In the second front connection terminal portion 620, a circular through hole 622 is formed on the front end side of the bent portion 621.
The second rear connection terminal portion 630 is disposed at an upper end portion of the rear surface portion 610c, which is an end portion of the rear side of the second bus bar 600. The second rear connection terminal portion 630 has a hook shape extending upward, then bent and extending rearward. In the second rear connection terminal portion 630, a circular through hole 632 is formed on the front end side of the bent portion 631. The detailed structure of the second rear connection terminal portion 630 will be described later.
On the front side of the capacitor element unit 100, 3 first front connection terminal portions 520 and 3 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 portions 530 and the second rear connection terminal portions 630 are arranged in the left-right direction.
The first insulating sheet 700 is disposed between the front surface part 510b of the first bus bar 500 and the front surface part 610b of the second bus bar 600. Further, a second insulating sheet 800 is disposed between the second rear connecting 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 a resin material having electrical insulation such as insulating paper, acryl, silicon, or the like. An insulation distance between the first bus bar 500 and the second bus bar 600 is secured by the first insulation sheet 700, and an insulation distance between the second rear connection terminal portion 630 of the second bus bar 600 and the first end surface electrode 410 of the capacitor element 400 is secured by the second insulation sheet 800.
The case 200 is made of resin, and is formed of, for example, polyphenylene sulfide (PPS), which is thermoplastic resin. The housing 200 is formed in a substantially rectangular parallelepiped box shape, has a bottom wall 201, a front side wall 202 rising from the bottom wall 201, a rear side wall 203, a left side wall 204, and a right side wall 205, and has an open upper surface.
The mounting latch 210 is provided on the upper portions of the left side wall 204 and the right side wall 205. The mounting tabs 210 have the same width as the left and right side walls 204, 205. The front side wall 202 and the rear side wall 203 extend to the front ends of the left and right mounting latches 210. An insertion hole 211 is formed in the mounting tongue 210. A metal collar 212 is fitted into the insertion hole 211 to improve the strength of the hole. A mounting sleeve 220 extending downward is formed on the back side of the central portion of the left and right mounting tongues 210. A nut (not shown) is embedded in the mounting sleeve 220. It should be noted that only the right-hand mounting sleeve 220 is depicted in fig. 2.
A mounting latch 230 is formed at an upper portion near the right end of the front side wall 202. An insertion hole 231 is formed in each mounting tongue 230. A metal collar 232 is fitted into the insertion hole 231 to improve the strength of the hole. Further, at the lower portion of the front side wall 202, 4 mounting sleeves 240 are formed in a manner aligned in the left-right direction. A nut 241 is embedded in the mounting sleeve 240.
These mounting tabs 210 and 230 and mounting sleeves 220 and 240 are used when fixing the film capacitor 1 to an installation portion of an external device such as an inverter unit.
Thus, as shown in fig. 1, the film capacitor 1 is completed. The 3 first front connecting terminal portions 520, the 3 second front connecting terminal portions 620, the first rear connecting terminal portions 530, and the second rear connecting terminal portions 630 are exposed from the filling resin 300 filled in the housing 200.
Next, the detailed structure 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.
Fig. 4A is a perspective view showing a main portion of the first bus bar 500 around the first rear connection terminal part 530, and fig. 4B is a perspective view showing a main portion of the second bus bar 600 around the second rear connection terminal part 630. Fig. 5A is a sectional view showing a main part of the film capacitor 1 around the first rear connection terminal part 530 of the first bus bar 500, and fig. 5B is a sectional view showing a main part of the film capacitor 1 around the second rear connection terminal part 630 of the second bus bar 600.
The first rear connection terminal portion 530 includes a hook-shaped first terminal portion 530a extending from a rear end portion of the first body portion 510, and a hook-shaped second terminal portion 530b folded back from a front end of the first terminal portion 530a to overlap the first terminal portion 530 a. Similarly, the second rear connection terminal portion 630 includes a hook-shaped first terminal portion 630a extending from an upper end portion of the rear surface portion 610c of the second body portion 610, and a hook-shaped second terminal portion 630b folded back from a front end of the first terminal portion 630a to overlap the first terminal portion 630 a.
The first terminal portions 530a, 630a and the second terminal portions 530b, 630b are formed of the same material (copper plate), and the thickness of the portions overlapping each other, that is, the thickness of the second terminal portions 530b, 630b is the same as the thickness of the portions overlapping the second terminal portions 530b, 630b in the first terminal portions 530a, 630 a. When the first bus bar 500 and the second bus bar 600 are manufactured in a bus bar manufacturing process described later, the second terminal portions 530b and 630b and the portions of the first terminal portions 530a and 630a where the second terminal portions 530b and 630b overlap are pressed and flattened. Therefore, the thickness of the portion of the first terminal portions 530a and 630a where the second terminal portions 530b and 630b overlap is smaller than the thickness of the portion of the first terminal portions 530a and 630a where the second terminal portions 530b and 630b do not overlap.
In this way, the first rear connection terminal portions 530 are composed of the first terminal portions 530a and the second terminal portions 530b overlapping the first terminal portions 530a, and thus have a thickness greater (approximately 2 times) than that of the first main body portion 510. Similarly, the second rear connection terminal portion 630 is composed of a first terminal portion 630a and a second terminal portion 630b overlapping the first terminal portion 630a, and thus has a thickness greater than (approximately 2 times) that of the second main body portion 610.
The bent portion 531 of the first rear connection terminal portion 530 is included in a portion where the first terminal portion 530a and the second terminal portion 530b overlap each other. Further, the first terminal portion 530a and the second terminal portion 530b are joined by the rivet 533 at a portion on the opposite side of the bent portion of the second terminal portion 530b (the front end portion of the first rear connection terminal portion 530) from the bent portion 531. Holes 534a, 534b through which the rivet 533 passes are formed in the first terminal portion 530a and the second terminal portion 530 b. 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 each other. The first terminal portion 630a and the second terminal portion 630b are joined by a rivet 633 at a portion on the opposite side of the bent portion 631 from the folded-back portion of the second terminal portion 630b (the front end portion of the second rear connection terminal portion 630). Holes 634a, 634b through which the rivet 633 passes are formed in the first terminal portion 630a and the second terminal portion 630 b.
The through hole 532 of the first rear connecting 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 matching with the first hole 532 a. The diameter of the first hole 532a is set to be the same as the diameter of the second hole 532 b. Similarly, the through hole 632 of the second rear connection terminal portion 630 includes a first hole 632a formed in the first terminal portion 630a and a second hole 632b formed in the second terminal portion 630b and matching with the first hole 632 a. The diameter of the first hole 632a is set to be the same as the diameter of the second hole 632 b.
The left and right corners 535, 635 of the front end portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are rounded by R-processing. Instead of the R-cut, chamfering (C-cut) may be performed on the right and left corners.
As shown in fig. 5A, in the first rear connection terminal portion 530, an end portion on the opposite side to the front 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 each other is buried in the filling resin 300. Similarly, as shown in fig. 5B, in the second rear connecting terminal portion 630, an end portion on the opposite side to the front end side of the second rear connecting terminal portion 630 in a portion where the first terminal portion 630a and the second terminal portion 630B overlap each other is buried in the filling resin 300.
Next, a method of manufacturing the first bus bar 500 and the second bus bar 600 will be described.
Fig. 6 is a diagram showing a flow of a bus bar manufacturing process. Fig. 7 is a diagram for explaining a connecting terminal portion bending step. Fig. 8A is a diagram for explaining a connecting terminal portion pressing process, and fig. 8B is a diagram for explaining a connecting terminal portion finishing process.
As shown in fig. 6, the bus bar manufacturing process for manufacturing the first bus bar 500 and the second bus bar 600 includes a die cutting process, a connecting terminal bending process, a connecting terminal pressing process, a connecting terminal finishing process, and an integral bending process.
Hereinafter, each step of the bus bar manufacturing process will be described using the first bus bar 500 as an example, and the same applies to the second bus bar 600.
First, a die cutting process is performed (S1). In the die-cutting step, the plate material (copper plate) is pierced ( り pulled out かれ) by using a cutting die having the shape of the primary bus bar 500, and the primary bus bar 500 in the expanded state is cut out.
Next, a connecting terminal portion bending step (S2) is performed. As shown in fig. 7, in the connecting terminal portion bending step, in the first bus bar 500 in the expanded state, the second terminal portion 530b is bent at the boundary with the first terminal portion 530a so as to overlap the first terminal portion 530 a.
Next, a connecting terminal portion pressing step (S3) is performed. As shown in fig. 8A, in the connecting terminal portion pressing step, the overlapped first terminal portions 530a and second terminal portions 530b are pressed and flattened in the thickness direction thereof. Thus, the surfaces of the first terminal 530a and the second terminal 530b facing each other are firmly adhered to each other.
Next, a connecting terminal portion finishing step (S4) is performed. As shown in fig. 8B, in the connecting terminal portion finishing step, first, the first hole 532a is opened in the first terminal portion 530a and the second hole 532B is opened in the second terminal portion 530B, whereby the through hole 532 is formed in the first rear connecting terminal portion 530. Holes 534a and 534b through which the rivet 533 passes are opened in the first terminal portion 530a and the second terminal portion 530 b. Next, portions which are crushed by pressing and which protrude further to the left and right from the base end portions of the first terminal portions 530a are cut off, and the left and right corners 535 of the front end portions of the first rear connection terminal portions 530 are R-processed.
Finally, the integral bending step (S5) is performed. In the integral bending step, first rear connection terminal portion 530 is bent into a final shape, and first main body portion 510 and first front connection terminal portion 520 are bent into 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 a rivet 533.
Thus, the first bus bar 500 as shown in fig. 3A is produced.
The film capacitor 1 can be mounted on an inverter unit for driving a motor in an electric vehicle, for example. The converter unit is supplied with power from a power supply device (battery). In this case, an external terminal (not shown) connected to the power supply device is connected to 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 by screwing using the through holes 532 and 632. Further, an external terminal (not shown) connected to the inverter circuit is connected to 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 by screwing using the through holes 522 and 622.
When the motor is driven, that is, when the film capacitor 1 is energized, a large current from the power supply device can flow to the first rear connection terminal portion 530 and the second rear connection terminal portion 630 connected to the power supply device.
In the present embodiment, the first rear connection terminal portion 530 has a smaller width in a direction (left-right direction) perpendicular to the flow of current than the first main body portion 510 of the first bus bar 500, and has a structure in which the first terminal portion 530a and the second terminal portion 530b overlap each other, and thus has a larger thickness than the first main body portion 510. Accordingly, the first rear connection terminal portion 530 has a large cross-sectional area in a direction (left-right direction) perpendicular to the flow of current, and thus has a small resistance. Therefore, heat generation in the first rear connection terminal portion 530 when a large current flows is reduced. Similarly, the second rear connecting terminal portion 630 has a smaller width in the direction (left-right direction) perpendicular to the flow of current than the second main body portion 610 of the second bus bar 600, and has a structure in which the first terminal portion 630a and the second terminal portion 630b overlap each other, and therefore has a larger thickness than the second main body portion 610. Therefore, heat generation in the second rear connection terminal portion 630 when a large current flows is reduced.
< effects of the embodiment >
As described above, according to the present embodiment, the following effects can be achieved.
First and second rear connection terminal portions 530 and 630, which are connectable to external terminals, are provided at end portions of the first and second bus bars 500 and 600, and the connection terminal portions 530 and 630 include first terminal portions 530a and 630a extending from the end portions of the first and second bus bars 500 and 600, and second terminal portions 530b and 630b overlapping the first terminal portions 530a and 630 a.
According to this structure, since the first rear connection terminal portion 530 and the second rear connection terminal portion 630 have a large thickness, the sectional area in the direction (left-right direction) perpendicular to the flow of current is large, and the resistance is small. This reduces heat generation at first rear connection terminal portion 530 and second rear connection terminal portion 630 when a current flows therethrough, and thus prevents heat damage to capacitor element 400 due to propagation of such heat to capacitor element 400.
The first rear connecting terminal portion 530 and the second rear connecting terminal portion 630 have through holes 532 and 632, the through holes 532 and 632 are formed by first holes 532a and 632a formed in the first terminal portions 530a and 630a and second holes 532b and 632b formed in the second terminal portions 530b and 630b, and the diameters of the first holes 532a and 632a and the diameters of the second holes 532b and 632b are set to be the same.
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 the external terminal, and the diameter of the other hole is set to be larger than the diameter of the one hole. In this case, in the through holes 532 and 632, the cross-sectional areas of first rear connection terminal portion 530 and second rear connection terminal portion 630 become smaller by one hole, and the resistance becomes larger. In contrast, in the present embodiment, the diameters of the first holes 532a and 632a and the second holes 532b and 632b are set to be the same, and therefore the diameters of the first holes 532a and 632a and the second holes 532b and 632b can be made uniform to a size necessary for connection of external terminals. Therefore, in the through holes 532 and 632, the cross-sectional areas of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 are not reduced, and the resistance is not increased.
Further, the second terminal portions 530b and 630b are folded back from the front ends of the first terminal portions 530a and 630a to overlap the first terminal portions 530a and 630 a.
According to this configuration, since the second terminal portions 530b and 630b may not be manufactured 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.
Further, the first rear connection terminal portion 530 and the second rear connection terminal portion 630 have bent portions 531, 631, and portions where the first terminal portions 530a, 630a and the second terminal portions 530b, 630b overlap each other include the bent portions 531, 631.
According to this structure, since the bent portions 531, 631 have a large thickness, the rigidity of the bent portions 531, 631 is increased, and therefore the first and second rear connection terminal portions 530, 630 are less likely to deform on the front end side than the bent portions 531, 631.
Further, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are joined by rivets 533 and 633 at portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 on the opposite side of the bent portions 531 and 631 from the folded-back portions of the second terminal portions 530b and 630 b.
According to this configuration, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are easily separated from each other by separating from the folded-back portions of the second terminal portions 530b and 630b, and the portions that are more easily separated by forming the bent portions 531 and 631 are joined by the rivets 533 and 633, so that the adhesion between the first terminal portions 530a and 630a and the second terminal portions 530b and 630b in these portions can be improved. This prevents the first rear connection terminal portions 530a and 630a and the second terminal portions 530b and 630b from having a gap (poor adhesion) therebetween, which increases the resistance of the first rear connection terminal portions 530 and the second rear connection terminal portions 630.
Further, in the first rear connection terminal portion 530 and the second rear connection terminal portion 630, end portions of the portions where the first terminal portions 530a and 630a and the second terminal portions 530b and 630b overlap each other, which are opposite to the front end sides of the first rear connection terminal portion 530 and the second rear connection terminal portion 630, are buried in the filling resin 300 filled in the case 200.
According to this configuration, since the root portions of first rear connection terminal portion 530 and second rear connection terminal portion 630, which are heavy due to the increased thickness, can be firmly supported by filled resin 300, first rear connection terminal portion 530 and second rear connection terminal portion 630 are less likely to be deformed, and the positions of first rear connection terminal portion 530 and second rear connection terminal portion 630 can be maintained with high accuracy.
Further, the first bus bar 500 and the second bus bar 600 are manufactured by a bus bar manufacturing process including: folding and overlapping the first terminal portions 530a, 630a and the second terminal portions 530b, 630b in the spread state at their boundaries; and a step of pressing the overlapped first terminal portions 530a, 630a and second terminal portions 530b, 630b in the thickness direction thereof.
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 may not be manufactured separately from the first bus bar 500 and the second bus bar 600 including the first terminal portions 530a and 630a, and the first bus bar 500 and the second bus bar 600 may be easily manufactured.
Further, since the overlapped first terminal portions 530a and 630a and the second terminal portions 530b and 630b are crushed by pressing, the adhesion between the first terminal portions 530a and 630a and the second terminal portions 530b and 630b is improved. This prevents the first rear connection terminal portions 530a and 630a and the second terminal portions 530b and 630b from having a gap (poor adhesion) therebetween, which increases the resistance of the first rear connection terminal portions 530 and the second rear connection terminal portions 630. Further, it is possible to prevent the filled resin 300 from entering between the first terminal portions 530a and 630a and the second terminal portions 530b and 630b, and thus to prevent the electric resistance of the first rear connection terminal portion 530 and the second rear connection terminal portion 630 from increasing.
< modification example >
While the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and various modifications can be made to the application examples of the present disclosure in addition to the above embodiments.
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 rivet 533. Likewise, 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 the rivet 633. However, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may be joined by other joining methods. For example, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may be joined by crimping. In this case, as shown in fig. 9A, the following pressure bonding structure can be adopted: projections 537, 637 are formed in the second terminal portions 530b, 630b, and the projections 537, 637 are inserted through holes 538, 638 formed in the first terminal portions 530a, 630a and are crushed (riveted). The projections 537 and 637 may be formed in the first terminal portions 530a and 630a, and the holes 538 and 638 may be formed in the second terminal portions 530b and 630 b. For example, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may be joined by brazing. In this case, as shown in fig. 9B, the solder pieces S are sandwiched between the first terminal portions 530a, 630a and the second terminal portions 530B, 630B. Then, the solder sheet S is heated and melted, and then solidified again, thereby bonding the first terminal portions 530a, 630a and the second terminal portions 530b, 630 b. Further, for example, the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may be joined by welding such as spot welding. In the case where the first terminal portions 530a, 630a and the second terminal portions 530b, 630b are joined by brazing or welding, the portions of the first terminal portions 530a, 630a and the second terminal portions 530b, 630b that overlap each other may be integrally brazed or welded.
Further, in the above embodiment, the second terminal portions 530b and 630b are formed of the same material as the first terminal portions 530a and 630a, and are folded back at the distal end portions of the first terminal portions 530a and 630a so as to overlap the first terminal portions 530a and 630 a. However, as shown in fig. 10A and 10B, the second terminal portions 530B and 630B may be formed separately from the first terminal portions 530A and 630A, and the second terminal portions 530B and 630B may be joined to overlap the first terminal portions 530A and 630A. In this case, as shown in fig. 10A, the thicknesses of the first terminal portions 530A and 630A and the thicknesses of the second terminal portions 530b and 630b may be the same in the portions overlapping each other. Alternatively, the thicknesses of the first terminal portions 530a and 630a and the thicknesses of the second terminal portions 530b and 630b may be different from each other. When the thicknesses are different, the thicknesses of the second terminal portions 530B and 630B may be set to be thicker than the thicknesses of the first terminal portions 530a and 630a, as shown in fig. 10B. In this case, since the thickness of the first and second main bodies 510 and 610 integrated with the first terminal portions 530a and 630a does not increase, it is difficult to increase the weight and cost of the first and second bus bars 500 and 600. When the first terminal portions 530A and 630A and the second terminal portions 530B and 630B are formed separately as described above, soldering by the solder sheet S may be performed entirely at the portions where the first terminal portions 530A and 630A and the second terminal portions 530B and 630B overlap each other as shown in fig. 10A and 10B. In addition, welding may be performed instead of brazing. Further, in order to join the first terminal portions 530a, 630a and the second terminal portions 530b, 630b, rivet locking and pressure contact may be performed on the distal end portion side and the base end portion side with the bent portions 531, 631 interposed therebetween.
Further, in the above embodiment, the through holes 532 and 632 for connecting to the external terminals are formed in the first rear connection terminal portion 530 and the second rear connection terminal portion 630. However, as shown in fig. 10C, notches 539 and 639 for connection with external terminals may be formed in first rear connection terminal portion 530 and second rear connection terminal portion 630. The notch portions 539, 639 have a U-shape, for example, corresponding to the external terminal to be connected. The cutout portions 539 and 639 are constituted by first cutout portions 539a and 639a formed in the first terminal portions 530a and 630a and second cutout portions 539b and 639b formed in the second terminal portions 530b and 630 b. In this case, the first notch portions 539a, 639a and the second notch portions 539b, 639b are made to have the same size (notch width, notch depth, etc.). As described above, similarly to the case where the diameters of first holes 532a and 632a and second holes 532b and 632b are the same, the sectional areas of first rear connection terminal portion 530 and second rear connection terminal portion 630 are not reduced in the portions of notch portions 539 and 639, and the resistance is not increased. Similarly to the through holes 532 and 632, the cut-out portions 539 and 639 can be formed in a connecting terminal portion finishing step in a bus bar manufacturing step.
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 the same. However, the both end portions of the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may not be matched with each other, for example, by making one of the first terminal portions 530a and 630a and the second terminal portions 530b and 630b wider than the other. When the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are separate bodies, the tip end portions of the first terminal portions 530a and 630a and the second terminal portions 530b and 630b may not be aligned with each other.
Further, in the above embodiment, the first and second terminals 530a and 630a and 530b and 630b are overlapped at the front end portions of the first and second rear connection terminal portions 530 and 630, and then the left and right corners 535 and 635 are R-processed. However, as shown in fig. 11A, a cutout 535a (635a) may be formed at a boundary portion between the first terminal portion 530a (630a) and the second terminal portion 530b (630b), so that the cutout 535a (635a) forms R at a left and right corner 535(635) when the first terminal portion 530a (630a) and the second terminal portion 530b (630b) are overlapped with each other. Note that the notch 535a (635a) may have a C-cut shape when the first terminal 530a (630a) and the second terminal 530b (630b) are superimposed.
Further, at the end portions of the first rear connection terminal portion 530 and the second rear connection terminal portion 630, after the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are overlapped, the first holes 532a and 632a and the second holes 532b and 632b and the holes 534a, 634a, 534b and 634b through which the rivets 533 and 633 pass are opened. However, as shown in fig. 11B, before the first terminal portion 530a (630a) and the second terminal portion 530B (630B) are stacked, the first hole 532a (632a) and the second hole 532B (632B) and the holes 534a (634a) and 534B (634B) through which the rivet (533) passes may be opened in the first terminal portion 530a (630a) and the second terminal portion 530B (630B). In consideration of the positional shift when the second terminal portion 530b (630b) is folded back, one of the first hole 532a (632a) and the second hole 532b (632b) may be larger than the other. Similarly, one of the holes 534a (634a) of the first terminal portion 530a (630a) and the holes 534b (634b) of the second terminal portion 530b (630b) may be larger than the other.
Similarly to the first holes 532a and 632a and the second holes 532b and 632b, the first notch portions 539a and 639a and the second notch portions 539b and 639b in fig. 10C may be opened before the first terminal portions 530a and 630a and the second terminal portions 530b and 630b are overlapped with each other. In this case, one of the first notch portions 539a, 639a and the second notch portions 539b, 639b may be made larger than the other.
Further, in the above-described embodiment, the first rear connection terminal portions 530 and the second rear connection terminal portions 630 are configured such that the second terminal portions 530b and 630b are folded back from the front ends of the first terminal portions 530a and 630a and overlap with the first terminal portions 530a and 630 a. However, the first rear connecting terminal portions 530 and the second rear connecting terminal portions 630 may be configured such that the second terminal portions 530b and 630b are folded back from the left or right ends of the first terminal portions 530a and 630a to overlap with the first terminal portions 530a and 630 a.
Further, 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 may be configured such that the first terminal portion and the second terminal portion overlap each other, thereby increasing the thickness (cross-sectional area) thereof.
Further, in the above embodiment, the capacitor element unit 100 includes 6 capacitor elements 400. However, the number of capacitor elements 400 can be appropriately changed including the case where the number is 1.
Further, in the above-described embodiment, capacitor element 400 is formed by overlapping 2 metallized films obtained by depositing aluminum on a dielectric film and winding or laminating the overlapped metallized films, but in addition to this, these capacitor elements 400 may be formed by overlapping a metallized film obtained by depositing aluminum on both surfaces of a dielectric film and an insulating film and winding or laminating the overlapped metallized film and insulating film.
Further, in the above-described embodiment, the film capacitor 1 is exemplified as an example of the capacitor of the present disclosure. However, the present disclosure can also be applied to capacitors other than the film capacitor 1.
In addition, the embodiments of the present disclosure can be modified in various ways as appropriate within the scope of the technical idea shown in the claims.
In the description of the above embodiments, terms indicating directions such as "upper" and "lower" indicate relative directions that depend only on relative positional relationships of constituent members, and do not indicate absolute directions such as vertical directions and horizontal directions.
Industrial applicability
The present disclosure is useful for capacitors used in various electronic devices, electrical devices, industrial devices, electrical devices of vehicles, and the like.
Description of reference numerals:
1 film capacitor (capacitor)
200 shell
300 filled resin
400 capacitor element
410 first end face electrode (electrode)
420 second end electrode (electrode)
500 first bus bar (terminal component)
520 first front connecting terminal part
521 curved part
522 through hole
530 first rear connecting terminal part (connecting terminal part)
530a first terminal portion
530b second terminal portion
531 curved part
532 through hole
532a first hole
532b second hole
533 rivet
535a cut-out part
539 cut-out portion
539a first incision part
539b second cut part
600 second busbar (terminal component)
620 second front connecting terminal part
621 curved part
622 through hole
630 second rear connecting terminal part (connecting terminal part)
630a first terminal portion
630b second terminal portion
631 bending part
632 through hole
632a first hole
632b second hole
633 rivet
639 cut part
639a first incision part
639b second cut-out portion.
Claims (16)
1. A capacitor is provided with:
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 portion of the terminal member and connectable with 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 overlapping the first terminal portion.
2. The capacitor of claim 1, wherein,
the connection terminal portion has a through hole or a notch portion for connection with the external terminal.
3. The capacitor of claim 1, wherein,
the connection terminal portion has a through hole for connection with the external terminal,
the through hole is constituted by 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 is the same as the diameter of the second hole.
4. The capacitor of claim 1, wherein,
the connection terminal portion has a notch portion for connection with the external terminal,
the cutout portion is constituted by a first cutout portion formed in the first terminal portion and a second cutout portion formed in the second terminal portion,
the first notch portion and the second notch portion have the same size.
5. 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, and is folded back from the one end of the first terminal portion to overlap with the first terminal portion.
6. The capacitor according to any one of claims 1 to 4,
the second terminal portion is provided with the first terminal portion body and overlaps with the first terminal portion.
7. The capacitor according to any one of claims 1 to 6,
a thickness of a portion of the first terminal portion overlapping the second terminal portion is the same as a thickness of a portion of the second terminal portion overlapping the first terminal portion.
8. The capacitor of claim 6, wherein,
a thickness of a portion of the second terminal portion overlapping the first terminal portion is thicker than a thickness of a portion of the first terminal portion overlapping the second terminal portion.
9. The capacitor according to any one of claims 1 to 8,
joining the first terminal portion and the second terminal portion.
10. The capacitor of claim 9, wherein,
the first terminal portion and the second terminal portion are joined by a rivet.
11. The capacitor of claim 9, wherein,
the first terminal portion and the second terminal portion are joined by crimping.
12. The capacitor of claim 9, wherein,
the first terminal portion and the second terminal portion are joined by soldering or welding.
13. The capacitor according to any one of claims 1 to 12,
the connecting terminal portion has a bent portion,
a portion where the first terminal portion and the second terminal portion overlap each other includes the bent portion.
14. The capacitor of claim 5, wherein,
the connecting terminal portion has a bent portion,
a portion where the first terminal portion and the second terminal portion overlap each other includes the bent portion,
in the connection terminal portion, the first terminal portion and the second terminal portion are joined at a portion on an opposite side of the bent portion from the one end of the first terminal portion.
15. The capacitor according to any one of claims 1 to 14,
the capacitor further includes:
a case that houses the capacitor element to which the terminal member is connected; and
a filling resin filled in the housing,
in the connection terminal portion, an end portion on a side opposite to a front end of the connection terminal portion in a portion where the first terminal portion and the second terminal portion overlap each other is buried in the filling resin.
16. A method for manufacturing a capacitor, comprising 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 portion of the terminal member and connectable with an external terminal,
the connecting terminal portion includes a first terminal portion extending from the end portion and a second terminal portion overlapping the first terminal portion,
the process of manufacturing the terminal member includes the steps of:
folding and overlapping the first terminal portion and the second terminal portion in the unfolded state at a boundary between the first terminal portion and the second terminal portion; and
the overlapped first terminal portion and second terminal portion are pressed in a thickness direction of the first terminal portion and second terminal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311025518.6A CN116936259A (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor body |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-149807 | 2018-08-08 | ||
| JP2018149807 | 2018-08-08 | ||
| PCT/JP2019/028733 WO2020031676A1 (en) | 2018-08-08 | 2019-07-23 | Capacitor and method for producing capacitor |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311025518.6A Division CN116936259A (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112514015A true CN112514015A (en) | 2021-03-16 |
| CN112514015B CN112514015B (en) | 2023-09-01 |
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ID=69414117
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921169164.1U Active CN210489447U (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor element |
| CN201980049921.8A Active CN112514015B (en) | 2018-08-08 | 2019-07-23 | Capacitor and method for manufacturing capacitor |
| CN202311025518.6A Pending CN116936259A (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor body |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921169164.1U Active CN210489447U (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor element |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311025518.6A Pending CN116936259A (en) | 2018-08-08 | 2019-07-23 | Capacitor with a capacitor body |
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| Country | Link |
|---|---|
| JP (1) | JP7426559B2 (en) |
| CN (3) | CN210489447U (en) |
| WO (1) | WO2020031676A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009252935A (en) * | 2008-04-04 | 2009-10-29 | Panasonic Corp | Case molded capacitor |
| CN103635981A (en) * | 2011-06-29 | 2014-03-12 | 双信电机株式会社 | 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 |
| WO2018016349A1 (en) * | 2016-07-21 | 2018-01-25 | パナソニックＩｐマネジメント株式会社 | Capacitor |
| JP2018068096A (en) * | 2016-10-14 | 2018-04-26 | 株式会社デンソー | Current sensor device |
-
2019
- 2019-07-23 CN CN201921169164.1U patent/CN210489447U/en active Active
- 2019-07-23 JP JP2020536431A patent/JP7426559B2/en active Active
- 2019-07-23 CN CN201980049921.8A patent/CN112514015B/en active Active
- 2019-07-23 CN CN202311025518.6A patent/CN116936259A/en active Pending
- 2019-07-23 WO PCT/JP2019/028733 patent/WO2020031676A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009252935A (en) * | 2008-04-04 | 2009-10-29 | Panasonic Corp | Case molded capacitor |
| CN103635981A (en) * | 2011-06-29 | 2014-03-12 | 双信电机株式会社 | 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 |
| WO2018016349A1 (en) * | 2016-07-21 | 2018-01-25 | パナソニックＩｐマネジメント株式会社 | Capacitor |
| JP2018068096A (en) * | 2016-10-14 | 2018-04-26 | 株式会社デンソー | Current sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2020031676A1 (en) | 2021-08-12 |
| CN112514015B (en) | 2023-09-01 |
| WO2020031676A1 (en) | 2020-02-13 |
| CN210489447U (en) | 2020-05-08 |
| CN116936259A (en) | 2023-10-24 |
| JP7426559B2 (en) | 2024-02-02 |
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