WO2005052967A1 - コンデンサ - Google Patents
コンデンサ Download PDFInfo
- Publication number
- WO2005052967A1 WO2005052967A1 PCT/JP2004/017488 JP2004017488W WO2005052967A1 WO 2005052967 A1 WO2005052967 A1 WO 2005052967A1 JP 2004017488 W JP2004017488 W JP 2004017488W WO 2005052967 A1 WO2005052967 A1 WO 2005052967A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current collector
- negative electrode
- positive electrode
- element body
- tab portion
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/10—Sealing, e.g. of lead-in wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/66—Current collectors
- H01G11/70—Current collectors characterised by their structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/74—Terminals, e.g. extensions of current collectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/82—Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
- H01G9/151—Solid electrolytic capacitors with wound foil electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Definitions
- the present invention relates to a capacitor, and in particular, can reduce the resistance from the element body to the terminal and reduce the inductance even when the terminal is provided only in one direction of the outer container.
- the present invention relates to a capacitor capable of shortening a body manufacturing time. Background art
- An electric double layer capacitor / electrolytic capacitor has a current collecting structure for collecting current from an internal element body and electrically connecting between the element body and a terminal for external connection.
- FIG. 7 shows a longitudinal sectional view of a conventional electric double layer capacitor having a current collecting structure.
- FIG. 8 shows a configuration diagram of a conventional element body, and
- FIG. 9 shows a view taken in the direction of arrow A in FIG. 8 (a separator is omitted).
- Patent Document 1 is known as a capacitor having such a current collecting structure.
- a columnar element body 1 impregnated with an electrolytic solution (not shown) is housed in a cylindrical outer container 21 having a bottom 21a.
- the opening 21 b of the outer container 21 is closed by a sealing plate 31.
- the element body 1 is disposed between a pair of long strip-shaped electrode bodies 3A and 3B for forming an electric double layer at the interface with the electrolytic solution, and between the electrode bodies 3A and 3B.
- the separators 5A and 5B are stacked, and the element body 1 is formed by winding the electrode bodies 3A and 3B and the separators 5A and 5B.
- One of the electrode bodies 3A and 3B forms a positive electrode, and the other forms a negative electrode.
- Electrode bodies 3A and 3B each have long band-shaped metal current collector foils 7A and 7B, and electrode layers 9A and 9B formed on the surfaces of current collector foils 7A and 7B. are doing.
- a high specific surface area material such as activated carbon, for example, is used to form an electric double layer on the current collecting foils 7A and 7B and perform an electricity storage function.
- the electrode layers 9A and 9B may be formed on both sides of the current collector foils 7A and 7B, respectively.
- Electrodes 11A and 11B where the electrode layers 9A and 9B are not formed are formed along the entire length in the axial direction of one winding.
- the strip-shaped tabs 13A and 13B and the current collector foils 7A and 7B and the force project the protruding ends 15A and 15B, which are one ends of the tabs 13A and 13B, respectively, out of the electrodes 3A and 3B.
- the tabs 11A and 1IB are provided on the current collector foils 7A and 7B in the state where the electrode layers 9A and 9B are formed. When 13B is joined, activated carbon or the like is used for the electrode layers 9A and 9B, so that sufficient joining strength may not be obtained.
- the tabs 13A, 13B are so separated as to sufficiently separate the respective protruding ends 15A, 15B connected to the counter electrode electrodes 3A, 3B.
- the joining position between the collector foil 7A and 7B is determined.
- the protruding ends 15A and 15B of the tabs 13A and 13B are separated from one of the spiral end faces of the element body 1 (the opening 21b side of the external container 21).
- the end face force on the opening 21b side of the element body 1 is also increased, and the number of protruding ends 15A and 15B is also increased.
- the protruding tips 15A are arranged so as to be sufficiently isolated from the protruding tips 15B of the counter electrode connected to the electrode body 3B, and substantially at the same positions as the other protruding tips 15A having the same polarity. I needed to. Therefore, when winding the electrode bodies 3A and 3B and the separators 5A and 5B, it is necessary to highly enhance the uniformity of the thickness of the electrode bodies 3A and 3B. Since it is difficult to determine and it is necessary to suspend the winding of the element body 1 when joining the tabs 13A and 13B, the manufacturing time of the element body 1 may be prolonged.
- Patent Document 2 is based on the premise that bus bars corresponding to the terminals 33A and 33B are arranged on both end surfaces of the module case, respectively.
- Patent Document 1 JP-A-51-649 (FIG. 1)
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-353078 (FIG. 4)
- the present invention has been made in view of such a conventional problem, and even when a terminal is provided only on one side of the outer container, the resistance to the element body power terminal is reduced, and an inductor is provided. It is an object of the present invention to provide a capacitor capable of reducing the capacitance and further reducing the manufacturing time of the element body.
- the present invention comprises an electrolytic solution and a long current collecting foil, and the longitudinal direction of the current collecting foil is A positive electrode and a negative electrode, each having an end strip along the entire length of one side in the direction, and being an electrode body disposed to face each other; and an ion-permeable separator separating the positive electrode and the negative electrode.
- An outer container that contains the element body and the electrolytic solution and has an opening on one side, and a positive electrode current collector plate that is disposed at each of both ends of the element body and that is electrically connected to the end band portion of the positive electrode.
- a negative electrode current collector plate electrically connected to the end strip of the negative electrode, a sealing plate for sealing the opening of the outer container, and a through-hole penetrating the sealing plate for attachment to the outside.
- the positive electrode and the negative electrode are configured such that the end strips of the respective current collector foils are arranged at opposite ends of the element body.
- a positive electrode tab portion and a negative electrode tab portion are provided between the positive electrode current collector and the positive electrode terminal and between the negative electrode current collector and the negative electrode terminal, respectively.
- the connection between the positive electrode current collector plate and the negative electrode current collector plate only needs to be made after the winding step of the element body instead of the conventional tab joining, so that the production is simple. . Therefore, the manufacturing cost of the capacitor can be reduced.
- the positive electrode current collector and the negative electrode current collector are arranged in a direction parallel to a winding cross section of the element body.
- the current collector plate is brought into contact with the entire length of the end band portion of the electrode body, so that the resistance between the electrode body and the current collector plate can be reduced, and the inductance can also be reduced. This can also reduce the resistance of the entire capacitor.
- the influence of inductance as a resistance component becomes large. It greatly contributes to the reduction of the resistance of the entire capacitor when charging and discharging.
- a tab portion connected to a current collector plate provided on a side opposite to the sealing plate may be an outermost peripheral portion of the element body. It is preferable to be disposed so as to pass between the external container.
- the sealing plate On the positive electrode current collector plate and the negative electrode current collector plate provided at both ends of the element body, the side not close to the positive electrode terminal and the negative electrode terminal attached to the through hole, that is, the sealing plate
- the tab portion connected to the current collecting plate provided on the opposite side passes between the outermost peripheral portion of the element body and the outer casing and is connected to the positive terminal or the negative terminal. Therefore, the length of the positive electrode tab portion or the negative electrode tab portion is relatively long.
- the positive electrode tab portion or the negative electrode tab portion is disposed between the outermost peripheral portion of the element body and the outer container.
- the area can be designed. Therefore, since these resistance values are designed to be negligible with respect to the overall resistance value, the resistance between the current collector and the terminal can be reduced, and the overall resistance of the capacitor can be reduced. .
- the end strips of the positive electrode and the negative electrode may be welded radially from the respective centers of the positive electrode current collector and the negative electrode current collector.
- the positive electrode current collector and the negative electrode current collector have a point-symmetrical shape, and the end strips of the positive electrode and the negative electrode have the positive electrode current collector and the negative electrode current collector, respectively.
- the positive electrode current collector plate and the negative electrode current collector plate are welded symmetrically with respect to the center portion of the plate. One end of the is preferably welded.
- the end strip and the current collector plate can be brought into full contact with each other, and the contact resistance can be reduced.
- effective connection is achieved. Tactile resistance can be reduced.
- electric energy can be efficiently input and output from the respective central portions of the positive current collector and the negative current collector. Therefore, electric energy can be input and output uniformly from the electrode body.
- the positive electrode current collector and the positive electrode tab, and the negative electrode current collector and the negative electrode tab may be integrally formed with each other.
- the positive electrode or the negative electrode is formed on at least one surface of the current collector foil with an electrode layer made of a high specific surface area material leaving the end band-shaped portion. It is preferable that the electric double-layer capacitor is an electric double-layer capacitor.
- an electric double layer capacitor having a power storage function can be formed with high efficiency.
- the current collector foil is made of aluminum or an aluminum alloy
- the positive electrode is an aluminum electrolytic capacitor in which a dense oxide film is formed on the current collector foil. I prefer that.
- FIG. 1 is a longitudinal sectional view of an electric double layer capacitor having a current collecting structure of the present invention.
- FIG. 2 is a configuration diagram of an element body of the present invention.
- FIG. 3 is a view taken in the direction of arrow B in FIG. 2.
- FIG. 4 is an enlarged view of a junction between an element body and a current collector.
- FIG. 5 is a configuration diagram of a current collector plate of the present invention.
- FIG. 6 is another configuration diagram of the current collector plate of the present invention.
- FIG. 7 is a longitudinal sectional view of a conventional electric double layer capacitor having a current collecting structure.
- FIG. 8 is a configuration diagram of a conventional element body.
- FIG. 9 is a view taken in the direction of arrow A in FIG.
- Electrode body 3A, 3B, 103A, 103B Electrode body
- FIG. 1 is a longitudinal sectional view of an electric double layer capacitor having a current collecting structure according to an embodiment of the present invention.
- FIG. 2 is a structural diagram of the element body of the present invention, and
- FIG. 3 is a diagram viewed from the arrow B in FIG.
- the same elements as those in FIGS. 7 to 9 are denoted by the same reference numerals and description thereof will be omitted.
- the single cell 100 of the electric double layer capacitor according to the present invention has a columnar element body 101 impregnated with an electrolyte solution (not shown), similar to the conventional single cell 50, and has an outer container 21 and a sealed container. It is sealed and accommodated by the plate 31.
- the electrode bodies 103A and 103B constituting the positive electrode and the negative electrode of the element body 101 of the present invention are composed of long band-shaped current collector foils 107A and 107B, and the longitudinal sides of the current collector foils 107A and 107B. It has electrode layers 9A and 9B formed leaving end strips 108A and 108B along the entire length of one side in the direction.
- Electrode layers 9A and 9B similarly to the conventional electrode bodies 3A and 3B, a high specific surface area material is used in order to form an electric double layer on the current collecting foils 107A and 107B and perform a power storage function. . Electrode layers 9A and 9B are formed on both surfaces of current collector foils 107A and 107B, respectively. However, electrode layers 9A and 9B may be formed only on one side of current collector foils 107A and 107B, respectively. Further, in FIG. 3, in the electrode bodies 103A and 103B, the band portions 108C and 108D are slightly left on one side opposite to the end band portions 108A and 108B. Is only a margin necessary between the current collector foils 107A and 107B and the electrode layers 9A and 9B in manufacturing the electrode bodies 103A and 103B, and from the viewpoint of the energy density of the element body 101. Is preferably not provided.
- the electrode bodies 103A and 103B are wound so as to protrude from the separators 5A and 5B on opposite sides along the longitudinal direction of the end strips 108A and 108B, respectively. As a result, a columnar element body 101 is formed.
- an insulating member (not shown) that covers the electrode body 103A or the electrode body 103B is arranged on the outermost peripheral portion of the element body 101.
- This insulating member is preferably a separator 5. It is preferable to use the separator 5 that is longer than the electrode bodies 103A and 103B for winding because the element body 101 whose outermost peripheral portion is covered by the separator 5 can be easily obtained.
- the element body 101 of the present invention does not have the electrode bodies 103A, 103B and the tab joining portions 11A, 1IB formed thereon, and the tabs 13A, 13B are also formed. Not joined.
- current collector plates 141A and 141B have point-symmetric shapes, and have disk-shaped plate portions 143A and 143B having substantially the same area as the wound cross section of element body 101. , Parallel to the winding section Are arranged in different directions.
- the end strips 108A, 108B of the electrode bodies 103A, 103B are joined to one surface of the plates 143A, 143B.
- the joining between the end strips 108A and 108B and the plate parts 143A and 143B includes mechanical pressing and conductive bonding with a conductive adhesive, but welding with high mechanical and electrical reliability. Joining is preferred.
- ultrasonic welding, laser welding such as YAG, and electron beam welding are preferably used as the welding method.
- the center force is also radially welded toward the outer periphery so that the distances from the center portions 145A and 145B of the plate portions 143A and 143B to the respective welding points 146A and 146B become uniform. It is desirable to be done. For example, as shown in FIG. 5, one portion (central portions 145A and 145B) is located at the center of the plate portions 143A and 143B, and six locations (welding points 146A and 146B), and a total of seven welding points are provided, and are radially line-welded from the center 145A, 145B force to the welding points 146A, 146B. ).
- the number of wire welds be four or more, since the electrode bodies 103A and 103B and the current collectors 141A and 141B can be brought into full contact with each other and the contact resistance can be reduced. Also, it is preferable to perform the line welding at an angle that is symmetrical with respect to the point symmetry center (central portions 145A and 145B), because the contact resistance can be effectively reduced.
- the current collector plate 141A joined to the end band-shaped portion 108A arranged on the opening 21b side when the element body 101 is accommodated in the outer container 21 is provided so as to cover the small protrusion 147A.
- a strip-shaped short tab portion 151A to which one end is connected is provided.
- the length LA in the longitudinal direction of the short tab portion 151A is set so that the small projection 147A and the terminal 33A have a margin for connection to the terminal 33A when the element body 101 is housed in the outer container 21. Is formed longer than the distance between them by a predetermined length.
- the current collector plate 141B joined to the band portion 108B is provided with a band-shaped long tab portion 151B having one end connected to the side of the small projection 147B.
- the length LB of the long tab portion 151B in the longitudinal direction is longer than the length LA of the short tab portion 151A and when the element body 101 is housed in the outer casing 21, the connection to the terminal 33B is made.
- the element body 101 is formed to have a predetermined length longer than the distance from the outermost peripheral portion of the element body 101 to the terminal 33B through the space between the outer casing 21 and the outer casing 21.
- the short tab portion 151A and the long tab portion 151B have a resistance value that is sufficiently smaller than a specific resistance value of the element body 101, and the completed unit cell 100
- the cross-sectional area is designed so as to satisfy the required resistance value.
- the element body 101 including the current collectors 141A and 141, the short tabs 1518, and the long tabs 151B is hermetically housed by the outer container 21 and the sealing plate 31,
- the other end of the short tab portion 151A is connected to the terminal 33A attached to the through hole 31a
- the other end of the long tab portion 151B is connected to the terminal 33B attached to the through hole 31b.
- the short tab portion 151A is in a bowed state due to the difference in the length LA of the short tab portion 151A and the distance between the small protrusion 147A and the terminal 33A! .
- the long tab portion 151B also has a small protrusion 147B force so that the small protrusion 147B of the current collector plate 141B passes through the space between the outermost peripheral portion of the element body 101 and the outer container 21 and is connected to the terminal 33B.
- Two bent portions 153 and 154 are formed.
- the long tab portion 151B is formed by winding the element body 101 in the longitudinal direction along the radial direction of the plate portion 143B up to the bent portion 153 and the force of the small protrusion 147B, and from the bent portion 153 to the bent portion 154.
- the bent portion 154 and the terminal 33B are in an arcuate state.
- the long tab portion 151B is disposed between the outermost peripheral portion of the element body 101 and the outer casing 21 in a range from the bent portion 153 to the bent portion 154. Since an insulating member (not shown) is arranged on the outermost peripheral portion, short-circuiting with the electrode bodies 103A, 103B and the like in the element body 101 is prevented. In the vicinity of the bent portion 154 of the long tab portion 151B, a force approaching the current collector plate 141A connected to the counter electrode body 103A, an insulating member (not shown) is interposed in this portion. Insulation is provided.
- the outermost peripheral portion of the element body 101 is constituted by the separator 5, a new It is not necessary to provide an insulating member.
- the end surfaces of the electrode bodies 103A and 103B are separately exposed on both end faces of the element body 101 toward the bottom 21a side and the opening 21b side of the outer container 21.
- the current collectors 141A and 141B are joined to the end strips 108A and 108B.
- the open tab 21B side of the outer container 21 is provided.
- the terminals 33A and 33B are arranged only on one side, that is, only on the sealing plate 31.
- long tab portion 151B is relatively long, its cross-sectional area is required to be sufficiently small with respect to the inherent resistance value of element body 101, and is required for completed unit cell 100. It is designed to satisfy the resistance value.
- the long tab portion 151B is connected to the terminal 33B through the space between the outermost peripheral portion of the element body 101 and the outer container 21, it is cut off without any restrictions as long as it can be accommodated in the outer container 21. The design of the area is performed. Therefore, the resistance value of the long tab portion 151B can be ignored with respect to the resistance value of the entire unit cell 100. This is the same for the short tab portion 151A.
- the current collectors 141A and 141B are brought into contact with the end strips 108A and 108B of the electrode bodies 103A and 103B, so that there is a gap between the electrode bodies 103A and 103B and the current collectors 141A and 141B. Resistance can be reduced.
- the electrodes 143A and 143B are radially welded from the center to the outer periphery thereof, the force of the electrode bodies 103A and 103B can be equally input and output to and from the electric energy.
- the long tab portion 151B is provided on the current collector plate 141B on the bottom portion 21a side, the electric energy from the element body 101 to the outside can be transferred only on one side of the opening portion 21b side of the outer container 21. Input and output can be performed. Therefore, when wiring the single cells 100 or when wiring the single cell 100 and an external circuit, the wiring can be easily connected and the space can be easily reduced. Further, the cross-sectional areas of the short tab portion 151A and the long tab portion 151B are designed such that their resistance values can be ignored with respect to the resistance value of the entire unit cell 100. The resistance between B and terminals 33A and 33B can be reduced.
- the terminals 33A and 33B can be provided only in one direction on the opening 21b side of the exterior container 21, and the resistance from the element body 101 to the terminals 33A and 33B can be reduced.
- the winding of the element body 101 does not need to be temporarily stopped, so that the manufacturing time of the element body 101 can be reduced.
- the element body 101 of the present invention instead of the conventional joining of the tabs 13A and 13B, it is only necessary to separate and join the current collector plates 141A and 141B after the process of the element body 101. Easy to manufacture. Therefore, the manufacturing cost of the single cell 100 can be reduced.
- the short tab portion 151A and the long tab portion 151B are not limited to the forces described as being connected to the small protrusions 147A and 147B of the current collector plates 141A and 141B, respectively.
- the plates 143A and 143B of the current collector plate are electrically connected to the terminals 33A and 33B (see FIG. 1), the short tab portion 151A and the long tab portion 151B become the plate portions of the current collector plate, respectively.
- 143A and 143B may be integrally formed with each other as shown in FIG.
- the material of the current collector foils 107A and 107B used for the electrode bodies 103A and 103B constituting the positive electrode and the negative electrode is not particularly limited as long as it has excellent electrochemical corrosion resistance on the positive electrode side.
- a foil material of aluminum, aluminum alloy, or stainless steel is preferable.
- the high specific surface area material used for the electrode layers 9A and 9B is formed mainly of a carbonaceous material having a specific surface area of 100 to 3000 m 2 Zg, and is composed of a resin such as phenol, a palm-based resin, a coke -Based or pitch-based activated carbon, and carbon nanotubes, carbon air port gel, polya Sene and the like can be preferably used, and carbon black, short carbon fiber, and metal fiber are preferable as the conductive aid. Further, the electrode layers 9A and 9B used for the positive electrode and the negative electrode may be made of the same material, or may be made of different materials.
- the material of the separators 5A and 5B may be a material having ion permeability, good electrical insulation and chemical stability to the electrolyte, and a large amount of electrolyte absorption and excellent liquid retention. It is preferred that the porous material also has a strength. Specifically, inorganic materials such as glass fiber, silica fuino ⁇ alumina fiber, asbestos, and whiskers thereof, paper materials such as manila hemp paper, cellulose paper, kraft paper, mixed paper of rayon fiber and sisal hemp, polyolefin, It is also preferable that organic material such as synthetic polymer fiber such as polyester be used. Further, a sheet obtained by forming them, a microporous film provided with micropores by a stretching operation, and the like are preferable.
- the current collector plates 141A and 141B are preferably made of the same material as the current collector foils 107A and 107B, and most preferably aluminum, an aluminum alloy, or stainless steel.
- the material of the short tab portion 151A and the long tab portion 151B is preferably aluminum, aluminum alloy, or stainless steel, which is preferably the same material as the current collecting foils 107A and 107B.
- the thickness of the current collectors 141A and 141B, the short tabs 151A, and the long tabs 151B is preferably 0.8 mm or less. . Further, it is preferable that the length of the short tab portion 151A and the length of the long tab portion 151B are shortened as far as the design allows.
- the material of the terminals 33A and 33B is preferably made of the same material as the electrode bodies 103A and 103B in order to reduce the resistance and to join the short tab part 151A and the long tab part 151B.
- -Aluminum, aluminum alloy, and stainless steel are optimal.Copper can also be used.
- the current collector foil 107A and 107B are both made of aluminum or aluminum alloy
- the collector foil 107A is an etching foil for a cathode and the collector foil 107B is an etching foil for an anode, and there is no need to provide the electrode layers 9A and 9B.
- the positive electrode anode
- the negative electrode is a thin film formed by subjecting the current collector foil 107A to a surface expansion treatment and a stabilization treatment.
- the present invention can reduce the connection resistance from the element body to the positive electrode terminal and the negative electrode terminal and reduce the inductance even when the positive electrode terminal and the negative electrode terminal are provided only in one direction of the container. Further, since the manufacturing time of the element body can be further shortened, it can be applied to a capacitor, an electric double layer capacitor and an aluminum electrolytic capacitor.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2005515789A JPWO2005052967A1 (ja) | 2003-11-25 | 2004-11-25 | コンデンサ |
EP04819404A EP1688975A4 (en) | 2003-11-25 | 2004-11-25 | CAPACITOR |
US11/440,114 US20060245144A1 (en) | 2003-11-25 | 2006-05-25 | Capacitor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003-394430 | 2003-11-25 | ||
JP2003394430 | 2003-11-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/440,114 Continuation US20060245144A1 (en) | 2003-11-25 | 2006-05-25 | Capacitor |
Publications (1)
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WO2005052967A1 true WO2005052967A1 (ja) | 2005-06-09 |
Family
ID=34631459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2004/017488 WO2005052967A1 (ja) | 2003-11-25 | 2004-11-25 | コンデンサ |
Country Status (4)
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US (1) | US20060245144A1 (ja) |
EP (1) | EP1688975A4 (ja) |
JP (1) | JPWO2005052967A1 (ja) |
WO (1) | WO2005052967A1 (ja) |
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WO2011080989A1 (ja) | 2009-12-28 | 2011-07-07 | Jmエナジー株式会社 | 蓄電デバイス |
JP2012160658A (ja) * | 2011-02-02 | 2012-08-23 | Nippon Chemicon Corp | コンデンサの製造方法 |
WO2020262439A1 (ja) * | 2019-06-28 | 2020-12-30 | パナソニックIpマネジメント株式会社 | 電解コンデンサおよびその製造方法 |
Families Citing this family (7)
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JP2006313793A (ja) * | 2005-05-06 | 2006-11-16 | Asahi Glass Co Ltd | 蓄電素子 |
US8488301B2 (en) * | 2011-02-28 | 2013-07-16 | Corning Incorporated | Ultracapacitor package design having slideably engagable bent tabs |
JP6072492B2 (ja) * | 2012-10-09 | 2017-02-01 | 日立オートモティブシステムズ株式会社 | コンデンサモジュール及び電力変換装置 |
KR20150059518A (ko) * | 2013-11-22 | 2015-06-01 | 삼성에스디아이 주식회사 | 이차 전지 |
US10692662B2 (en) | 2016-01-07 | 2020-06-23 | Nesscap Co., Ltd. | Electric double layer device |
EP3196906B1 (en) * | 2016-01-20 | 2023-09-06 | Maxwell Technologies Korea Co., Ltd. | Electric double layer device |
CN112201769B (zh) * | 2020-09-25 | 2022-03-11 | 宁德新能源科技有限公司 | 电化学装置和电子装置 |
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JP2001093506A (ja) * | 1999-09-22 | 2001-04-06 | Honda Motor Co Ltd | 蓄電素子の電極接合方法 |
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US3491275A (en) * | 1967-05-02 | 1970-01-20 | Sprague Electric Co | Flat capacitor |
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US4001656A (en) * | 1974-12-27 | 1977-01-04 | P. R. Mallory & Co., Inc. | Capacitor having a plurality of anode risers for low impedance at high frequency |
JPS606073B2 (ja) * | 1979-11-07 | 1985-02-15 | 松下電器産業株式会社 | 渦巻電極体を備えた電池の製造法 |
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EP1223592B1 (en) * | 1999-09-30 | 2007-02-28 | Asahi Glass Company Ltd. | Capacitor element |
US6396682B1 (en) * | 2000-01-31 | 2002-05-28 | Ness Capacitor Co., Ltd. | Electric energy storage device and method for manufacturing the same |
DE60128020T2 (de) * | 2000-03-14 | 2007-12-27 | Sanyo Electric Co., Ltd., Moriguchi | Nichtwässrige elektrolytische Sekundärzellen |
KR100473433B1 (ko) * | 2000-07-17 | 2005-03-08 | 마쯔시다덴기산교 가부시키가이샤 | 비수전해액 및 그것을 포함하는 비수전해액전지 및 전해콘덴서 |
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CN1235307C (zh) * | 2001-08-24 | 2006-01-04 | 日本电池株式会社 | 非水电解质二次电池 |
EP1411533A1 (en) * | 2002-10-09 | 2004-04-21 | Asahi Glass Company, Limited | Electric double layer capacitor and process for its production |
DE112004000061T5 (de) * | 2003-03-19 | 2005-09-08 | Matsushita Electric Industrial Co., Ltd., Kadoma | Kondensator und Verfahren zu dessen Verbindung |
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2004
- 2004-11-25 JP JP2005515789A patent/JPWO2005052967A1/ja not_active Withdrawn
- 2004-11-25 EP EP04819404A patent/EP1688975A4/en not_active Withdrawn
- 2004-11-25 WO PCT/JP2004/017488 patent/WO2005052967A1/ja active Application Filing
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2006
- 2006-05-25 US US11/440,114 patent/US20060245144A1/en not_active Abandoned
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JP2001093506A (ja) * | 1999-09-22 | 2001-04-06 | Honda Motor Co Ltd | 蓄電素子の電極接合方法 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011080989A1 (ja) | 2009-12-28 | 2011-07-07 | Jmエナジー株式会社 | 蓄電デバイス |
JPWO2011080989A1 (ja) * | 2009-12-28 | 2013-05-09 | Jmエナジー株式会社 | 蓄電デバイス |
JP2012160658A (ja) * | 2011-02-02 | 2012-08-23 | Nippon Chemicon Corp | コンデンサの製造方法 |
WO2020262439A1 (ja) * | 2019-06-28 | 2020-12-30 | パナソニックIpマネジメント株式会社 | 電解コンデンサおよびその製造方法 |
US11908633B2 (en) | 2019-06-28 | 2024-02-20 | Panasonic Intellectual Property Management Co., Ltd. | Electrolytic capacitor and method for manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
EP1688975A4 (en) | 2009-03-11 |
JPWO2005052967A1 (ja) | 2007-06-21 |
US20060245144A1 (en) | 2006-11-02 |
EP1688975A1 (en) | 2006-08-09 |
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