WO2005086258A1 - フィルム外装電気デバイスおよび該フィルム外装電気デバイス用の集電部被覆部材 - Google Patents
フィルム外装電気デバイスおよび該フィルム外装電気デバイス用の集電部被覆部材 Download PDFInfo
- Publication number
- WO2005086258A1 WO2005086258A1 PCT/JP2005/004080 JP2005004080W WO2005086258A1 WO 2005086258 A1 WO2005086258 A1 WO 2005086258A1 JP 2005004080 W JP2005004080 W JP 2005004080W WO 2005086258 A1 WO2005086258 A1 WO 2005086258A1
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- WIPO (PCT)
- Prior art keywords
- current collector
- film
- positive electrode
- heat
- electric device
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a film-covered electric device in which an electric device element, such as a battery or a capacitor, is contained in an outer film.
- the present invention particularly relates to a current collector covering member for covering a current collector of a film-covered electric device.
- the battery exterior material it is possible to further reduce the weight and thickness in place of the conventional metal can, which has limitations in weight reduction and thickness reduction, and it is possible to adopt a more flexible shape than metal cans
- As an exterior material a metal thin film or a laminate film obtained by laminating a metal thin film and a heat-fusible resin film has come to be used.
- a typical example of a laminate film used as a battery exterior material is to laminate a heat-sealable resin film as a heat seal layer on one surface of an aluminum thin film as a metal thin film, and to laminate it on the other surface.
- a battery element In a film-covered battery using a laminate film as a package material, a battery element is surrounded by a laminate film with a heat-fusible resin film facing each other, and a laminate film is heat-sealed around the battery element. By doing so, the battery element is hermetically sealed (hereinafter simply referred to as sealing!).
- the battery element has a structure in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween. These positive electrode and negative electrode are provided with tabs respectively for drawing out the positive electrode and the negative electrode of the battery element to the outside of the laminate film.
- a porous film formed using a thermoplastic resin such as polyolefin is used as the separator.
- FIG. 1 shows a side cross-sectional view of a battery element of an example of a conventional film-covered battery.
- the film-covered battery 301 includes a battery element 302, a positive electrode current collector 303a and a negative electrode current collector 303b provided in the battery element 302, and an outer body that accommodates the battery element 302 together with an electrolyte. And a positive electrode tab 304a connected to the positive electrode current collector 303a and a negative electrode tab 304b connected to the negative electrode current collector 303b.
- Battery element 302 is configured by alternately stacking a plurality of positive plates and a plurality of negative plates via a separator. For each positive electrode plate, a positive electrode material is applied to an aluminum foil, and for a negative electrode, a negative electrode material is applied to a copper foil. An unpainted portion of each foil is extended from the lamination region to form an extended portion. The electrode material is applied to the extension part. The extended portions of the positive electrode plate and the extended portions of the negative electrode plate are collectively ultrasonically welded together to form a positive current collecting portion 303a and a negative current collecting portion 303b, which are relay portions. are doing.
- the positive electrode current collector 303a and the positive electrode tab 304a, and the negative electrode current collector 303b and the negative electrode tab 304b are simultaneously connected by ultrasonic welding, respectively.
- the positive electrode tab 304a and the negative electrode tab 304b are manufactured by punching an aluminum plate and a copper plate, respectively.
- the exterior body is composed of two laminated finolems 305 and 306 that surround the battery element 302 with both sides in the thickness direction therebetween.
- Each laminated finolem 305, 306 is formed by laminating a ⁇ (polypropylene) layer 310, an aluminum layer 311, and a nylon layer 312.
- Each of the laminate films 305 and 306 seals the battery element 302 by heat-sealing the peripheral portions of the laminate films 305 and 306 such that the lower layer 310 becomes an inner layer of the battery.
- the sharp inner corners of the positive electrode current collector 303a and the negative electrode current collector 304a are hit by vibrations or the like, so that the inner layer PP of the laminate films 305 and 306 is formed.
- the layer 310 may be damaged, the portion may be thinned, and the insulation may be reduced. It is well known that lightning strikes a lightning rod on a flat ground. With the same principle, the sharp corners of the aluminum layer 311 under the PP layer 310, the positive current collector 303a, and the negative current collector 304a Are most likely to cause an electrical short circuit.
- each junction between the positive electrode and the negative electrode terminals and the positive electrode and the negative electrode leads is housed inside, and an insertion hole through which each lead is inserted is formed.
- a triangular insulating frame-shaped spacer is disclosed (eg, FIG. 28-FIG. 30 in WO 00Z59063).
- the insulating frame spacer accommodates the current collectors of the positive and negative terminals, which are grouped in a triangular shape, while reinforcing the insulating frame spacer.
- the laminated electrode is fixed by pressing the end face of the laminated electrode. With this configuration, it is possible to prevent the cutting of the lead, the breakage of the exterior film, or the electrical short circuit between the exterior film and the laminated electrode.
- the insulating frame-shaped spacer has a configuration in which the end face of the laminated electrode is pressed by the reinforcing portion to fix the laminated electrode. For this reason, a member having a certain degree of rigidity is used for the insulating frame-shaped spacer so that the spacer itself is not deformed.
- the insulating frame-shaped spacer has a certain gap between the insertion hole and the lead because the lead may be deformed when external force is applied to the lead and the insertion force is applied to the insertion hole. .
- the through hole is formed to be larger than the size of the lead, so that a large amount of the electrolytic solution has penetrated into the insulating frame-shaped spacer.
- the corners of the current collector are covered with the insulating frame-shaped spacer, the outer film is not damaged by the corners of the current collector, but the insulating frame-shaped spacer has rigidity. Since it is a member, the insulating frame-shaped spacer itself is not considered to damage the exterior film and reduce the insulating property.
- the insulating frame-shaped spacer covers the corner in such a manner that a gap is not generated as much as possible between the insulating frame-shaped spacer and the corner of the current collector.
- such a configuration using a member having a certain degree of rigidity may damage the lead and the like at the time of assembly, and as described above, when the external force is also applied to the lead, The lead may be deformed by hitting the insertion hole.
- even if such an insulating frame-shaped spacer is made of resin, there is a problem of an increase in weight in order to secure rigidity.
- An object of the present invention is to provide a battery and a current collector covering member for the film-covered battery.
- the film-covered electric device of the present invention includes a laminated region in which a plurality of positive plates and a plurality of negative plates are laminated to face each other.
- An electric device element having a current collecting portion formed by joining together, at least a heat-fusible resin layer and a metal layer are laminated, and the heat-fusible resin layer is on the inside and the battery element And at least the corners of the current collector are tightly covered with a film-covered electrical device having an outer film that seals the battery element by heat-sealing the peripheral joints. It has a bag-like member.
- the corner of the current collector is covered with the bag-shaped member, so that the package film can be prevented from being damaged by the corner. Also, even if the corners damage the exterior film, the current path between the corners and the damaged portion is lengthened because the bag is closely attached and covered, so that an electrical short circuit is unlikely to occur. Can be. In other words, if there is no bag-shaped member, the corner and the damaged portion form a shortest current path and an electrical short-circuit is likely to occur. This current path cannot be formed except through the opening of the bag-shaped member, and therefore the shortest current path is not formed.
- the bag-shaped member closely covers the current collector, the infiltration of the electrolytic solution between the bag-shaped member and the current collector can be reduced. , Increasing the electrical resistance between the corner and the damaged part.
- the film-covered electrical device of the present invention can improve the insulation properties between the current collector and the package film.
- the film-covered electric device of the present invention has a tab connected to the current collector and extending from the package film, and the bag-shaped member has an opening through which the tab is inserted. There may be.
- the bag-shaped member may be made of a greasy film.
- the bag-like member a film instead of a high-rigidity rigid resin case or the like, it is possible to reduce the weight and to improve the adhesion to the current collector.
- the bag-shaped member may be formed by laminating two films, or may be formed of an inflation film.
- the current-collecting portion covering member for a film-covered electric device of the present invention includes a laminated region formed by stacking a plurality of positive plates and a plurality of negative plates so as to face each other.
- An electric device element having a current collecting portion formed by joining them together, and at least a heat-fusible resin layer and a metal layer are laminated, with the heat-fusible resin layer inside, and a battery element.
- the current collecting portion covering member of the present invention is connected to the current collecting portion, the outer package film film also extends !, and an opening portion through which a tab is inserted is formed! You can! /
- the current-collecting portion covering member of the present invention may have a greasy film strength! / In this case, it is formed by laminating two films. Or, it may be made of blown film.
- the present invention it is possible to improve the insulation properties between the current collector and the outer package film while suppressing an increase in weight.
- FIG. 1 is a side sectional view of a battery element of an example of a conventional film-covered battery.
- FIG. 2 is an exploded perspective view of a film-covered battery according to one embodiment of the present invention.
- FIG. 3 is an external perspective view of a current collector protection member according to the first embodiment of the present invention.
- FIG. 4 is a partially enlarged perspective view showing the vicinity of a positive electrode tab and a positive electrode current collector of a current collector protection member and a film-covered battery.
- FIG. 5 is a view schematically showing a process of attaching a current collector protection member to a positive electrode current collector and a negative electrode current collector.
- FIG. 6 is a view showing a process of attaching a laminate film to a battery element in which a current collector protection member is attached to a positive electrode current collector and a negative electrode current collector.
- FIG. 7a is a schematic plan view of the vicinity of a positive electrode current collector where a current collector protection member is mounted.
- FIG. 7b is a side sectional view taken along line AA of FIG. 7a.
- FIG. 7c is a side sectional view taken along line BB of FIG. 7a.
- FIG. 8 is a view for explaining a current path when a laminate film is damaged and the force of the damaged portion is also up to the corners.
- FIG. 9 is an external perspective view of a current collector protection member according to a second embodiment of the present invention.
- FIG. 10 is an external perspective view of a current collector protection member according to a third embodiment of the present invention.
- FIG. 2 shows an exploded perspective view of the film-covered battery.
- FIG. 2 shows the film-covered battery of this embodiment with the current collector protection member removed.
- the film-covered battery 1 includes a battery element 2, a positive electrode current collector 3 a and a negative electrode current collector 3 b provided on the battery element 2, and two laminates each containing the battery element 2 together with an electrolyte.
- It has an outer package composed of 5 and 6, a positive electrode tab 4a connected to the positive electrode current collector 3a, and a negative electrode tab 4b connected to the negative electrode current collector 3b.
- Battery element 2 is configured by alternately stacking a plurality of positive plates and a plurality of negative plates via a separator.
- Each positive electrode plate is obtained by applying a positive electrode to an aluminum foil, and the negative electrode is obtained by applying a negative electrode to a copper foil. Extends from the lamination area and is coated with electrode material The extended portions of the positive electrode plate and the extended portions of the negative electrode plate are welded together at a time by ultrasonic welding, so that the positive current collecting portion 3a and the negative current collecting portion, which are relay portions, are welded together. Form 3b. At the same time as the ultrasonic welding, connection of the positive electrode tab 4a to the positive electrode current collector 3a and connection of the negative electrode tab 4b to the negative electrode current collector 3b are also made.
- the exterior body is composed of two laminated films 5, 6 that surround the battery element 2 with the battery element 2 sandwiched from both sides in the thickness direction.
- Each of the laminate films 5 and 6 is formed by laminating a heat-fusible resin layer having heat-fusibility, a metal layer, and a protective layer.
- Each of the laminated films 5 and 6 should be heat-sealed with the heat-sealed portion 7 of the laminated films 5 and 6 such that the heat-fusible resin layer made of PP (polypropylene) becomes the inner layer of the battery. Then, the battery element 2 is sealed.
- the laminated films 5 and 6 films that can be used for this type of film-covered battery can be used as long as the battery element 2 can be sealed without leaking the electrolytic solution.
- a laminated film in which a metal thin film layer and a heat-fusible resin layer are laminated is used.
- a film obtained by attaching a heat-fusible resin having a thickness of 3 m to 200 m to a metal foil having a thickness of 10 ⁇ m to 100 ⁇ m can be used.
- the material of the metal foil that is, the metal layer, Al, Ti, Ti-based alloy, Fe, stainless steel, Mg-based alloy and the like can be used.
- the heat-fusible resin that is, the heat-fusible resin layer is made of polypropylene, polyethylene, acid-modified products thereof, polyester such as polyphenylene sulfide, polyethylene terephthalate, polyamide, ethylene vinyl acetate, etc. Polymers and the like can be used. Further, nylon or the like is suitable for the protective layer.
- FIG. 3 is an external perspective view of the current collector protection member of the present embodiment.
- FIG. 4 is a partially enlarged perspective view of the vicinity of the positive electrode tab and the positive electrode current collector of the current collector protection member and the film-covered battery. is there.
- the current collector protection member 10 shown in Fig. 3 is a bag-shaped member for covering the positive electrode current collector 3a and the negative electrode current collector 3b, particularly the corners 3a 'and 3b'. Since the basic structures of the positive current collector 3a and the negative current collector 3b are the same, the structure of the current collector protection member 10 will be described using the positive current collector 3a as an example.
- the current collector protection member 10 generally includes a flat portion 10a that covers the flat surface 31 of the positive current collector 3a, a side surface portion 10b that covers the side surface 32 of the positive current collector 3a, and an end of the positive current collector 3a. Front part covering part 33 1 Oc.
- the width of the current collector protection member 10 covers each part of the positive current collector 3a, so that the force formed between the current collector protection member 10 and the positive current collector 3a is wider than the width of the positive current collector 3a. In order to minimize the amount of infiltration of the electrolytic solution, it is formed to be slightly wider than the width of the positive electrode current collector 3a. In the case of the present embodiment, the width of the positive electrode current collector 3a is 65.5 mm, whereas the width of the current collector protection member 10 is 66 mm.
- the front portion 10c is formed with a positive electrode tab 4a and a through hole 10d through which the positive electrode current collecting portion 3a is formed.
- the positive electrode tab 4a is formed in a region facing the through hole 10d.
- An insertion hole 10e for inserting the cover 11 and the positive electrode current collector 3a is formed.
- the opening width of the through hole 10d formed in the front surface portion 10c covers the force corner portion 3a 'formed wider than the widest portion of either the positive electrode tab 4a or the covering portion 11. For this reason, it is preferable that the opening width be such that the front part 10c remains on both sides of the through hole 1 Od as much as possible.
- the opening width of the through hole 10d is 46.5 mm while the width force of the covering portion 11 is 6 mm.
- the front surface portion 10c is formed to about 9.75 mm on each side.
- the height of the front surface 10c is preferably slightly higher than the thickness of the terminal end 33 of the positive electrode current collector 3a for the purpose of covering the corner 3a '.
- the force tab 4a in which the thickness of the terminal end portion 33 of the positive electrode current collector 3a is 0.15 to 0.3 mm is a state in which the covering portion 11 is formed in advance and the positive electrode current collector 3a is used. Are joined. Therefore, in order to allow the covering portion 11 to be inserted at the time of mounting, it is preferable that the height of the front portion 10c be about 0.3 to 0.4 mm in accordance with the thickness of the covering portion 11 of 0.2 to 0.3 mm. It is. If the covering portion 11 is formed on the tab 4a after the current collecting portion protection member 10 is mounted on the positive electrode current collecting portion 3a, the height of the front portion 10c should be adjusted to 0.2- It is preferable to set it to about 0.4 mm.
- the opening height of the insertion hole 10e is set to be the thickest part of these, that is, in the case of the present embodiment, in order to facilitate insertion of the positive electrode tab 4a, the covering part 11, and the positive electrode current collecting part 3a. It is formed to be higher than the thickness of the positive electrode current collector 3a. In addition, it is preferable that the opening height is not made higher than necessary in order to minimize the amount of infiltration of the electrolytic solution between the current collector protection member 10 and the positive electrode current collector 3a. In the case of the present embodiment, the thickest portion of the positive electrode current collector 3a is 2 to 8 mm, and the opening height of the insertion hole 10e is correspondingly set to 2 to 8 mm. 5-8. It is preferable to set it to about 5 mm.
- each part described above are an example relating to the positive electrode side.
- the width of the negative electrode current collector 3b is 70 mm and the width of the negative electrode current collector protection member is 70. 5 mm, and the dimensions of each part on the negative electrode side are defined in the same manner as on the positive electrode side based on this.
- the current collector protection member 10 of the present embodiment is made of PP (polypropylene) having a thickness of 100 ⁇ m.
- the current collector protection member 10 is rich in flexibility, and a force is applied to the positive electrode tab 4a from the outside, and even if the positive electrode tab 4a comes into contact with the current collector protection member 10, the contact portion is locally formed. It does not bend.
- the material of the current collector protection member 10 is not limited to PP, but may be any material as long as it is not eroded by the electrolytic solution and has high flexibility.
- FIG. 5 is a view showing a process of attaching a current collector protection member to the positive electrode current collector and the negative electrode current collector.
- FIG. 6 is a diagram illustrating a current collector protection member attached to the positive electrode current collector and the negative electrode current collector.
- FIG. 4 is a view showing a process of attaching a laminate film to a battery element on which is mounted.
- each of the two current collector protection members 10 is also inserted into the positive electrode tab 4a and the negative electrode tab 4b with their respective forces directed toward the positive electrode current collector 3a and the negative electrode current collector 3b (FIG. 5).
- Each current collector protection member 10 is inserted to a predetermined position of the positive electrode current collector 3a and the negative electrode current collector 3b. At this time, the current collector protection member 10 is not bonded to the positive current collector 3a and the negative current collector 3b.
- the battery element 2 including the current collector protection member 10 is sandwiched between the laminate films 5 and 6 (FIG. 6).
- three sides of the heat-sealed portions 7 of the laminated films 5 and 6 are heat-sealed and evacuated, and the remaining one side is heat-sealed to seal the battery element 2.
- FIGS. 7a to 7c are schematic plan views and side views of the vicinity of the positive electrode current collector 3a to which the current collector protection member 10 is attached as described above.
- 7A is a plan view showing only the current collector protection member 10 in a sectional view
- FIG. 7B is a side sectional view taken along line AA of FIG. 7A
- FIG. 7C is a sectional view taken along line BB of FIG. 7A. It is a side sectional view.
- Laminated films 5 and 6 are omitted.
- the corner 3a 'of the positive electrode current collector 3a is covered with the flat portion 10a, the side surface 10b, and the front surface 10c of the current collector protection member 10, whereby the corner 3a' is formed of a laminate film.
- the structure is such that the heat-fusible resin layers of the laminated films 5 and 6 are not damaged by directly contacting the laminated films 5 and 6. Further, the corner 3a 'is located at a position away from the through hole 10d and the insertion hole 10e, so that the current path from the current collector protection member 10 can be lengthened.
- the current collector protection member 10 When the battery element 2 is sealed with the laminate films 5 and 6, the current collector protection member 10 is in close contact with the positive electrode current collector 3 a by evacuating the battery. As a result, infiltration of the electrolytic solution between the current collector protection member 10 and the positive electrode current collector 3a can be reduced as much as possible, and therefore, the gap between the corner 3a 'and the later-described damaged portion 5 can be reduced. Insulation can be ensured.
- the corner 3a ′ comes into contact with the laminate films 5 and 6, whereby the heat-sealing property of the laminate films 5 and 6 is reduced.
- the resin layer is damaged, and the heat-fusible resin layer at that portion becomes thin, resulting in a decrease in insulation. That is, the starting point of the dielectric breakdown on the side of the laminated films 5 and 6 is the damaged portion 5 '.
- the starting point of the dielectric breakdown on the side of the positive electrode current collector 3a is the corner 3a '.
- the current path from the damaged portion 5 'to the corner 3a' becomes the shortest route a, and the insulating property is the lowest.
- the corner 3a ′ is covered by the side face 10b and the front face 10c of the current collector protection member 10. Therefore, in the first embodiment, as described above, the corners 3a 'do not cause the heat-fusible resin layers of the laminate films 5 and 6 to have the damaged portions 5'. However, even if the damaged portion 5 ′ occurs, the current path from the damaged portion 5 ′ to the corner 3 a ′ is the path b through the through hole 1 Od or the path c through the insertion hole 1 Oe c. It becomes.
- both the paths b and c are longer than the path a, so that a situation in which dielectric breakdown does not easily occur can be achieved.
- the current collector protection member 10 since the current collector protection member 10 also has a flexible material strength, it is in close contact with the positive electrode current collector 3a by evacuation. For this reason, the cross-sections of the passages b and c are very narrow, and the Can be secured.
- the current collector protection member 10 of the present embodiment not only secures ease of mounting, but also has a long current path to the corner 3a ′ and a large electric resistance. It is configured to be.
- the current collector protection member 10 of the present embodiment which only needs to cover the current collector, considers the resistance of the adhesive to the electrolyte. There is also a problem with the difference in the way of sticking at the time of manufacture, that is, the problem that the insulating properties deteriorate due to the way of sticking so that a large gap is formed between the tape and the current collector. Absent.
- a three-dimensional shape in which the side portion 10b is formed is shown as an example.
- the force is not limited to this. It may be a flat shape! / ,.
- the current collector protection member 10 shown in the first embodiment has a side surface portion 10b formed into a three-dimensional shape before mounting, and a bag in which a through hole 10 and an insertion hole 10e are formed. An example in which the shape is integrally formed in advance is shown. As shown in FIG. 9, the current collector protection member 110 of the present embodiment is formed by laminating two films 112a and 112b.
- the two films 112 are welded to only a part of the side part 110b and the front part 110c so that the through hole 110d and the insertion hole 110e are formed (
- the welded portion 111) is shown by hatching in the figure. Before installing the current collector protection member 110! It has a planar shape.
- each part are determined in the same manner as the current collector protection member 10 of the first embodiment so that the same object as that of the current collector protection member 10 of the first embodiment can be achieved.
- the welding margin of the welding portion 111 is preferably wide so that the current path can be as long as possible.
- the current collector protection member 110 shown in the second embodiment is an example in which two films 112 are bonded together.
- the current collector protection member 210 of the present embodiment is shown in FIG.
- the second embodiment differs from the second embodiment in that the second embodiment comprises the blown film 212.
- the current collector protection member 210 is configured such that the inflation film 212 is
- each part are determined in the same manner as the current collector protection member 10 of the first embodiment so as to achieve the same object as the current collector protection member 10 of the first embodiment.
- the welding margin of the welding portion 211 is preferably wide so that the current path can be as long as possible.
- the lead terminals may be made of Al, Cu, Ni, Ti, Fe, phosphor bronze, brass, stainless steel, or the like, and may be subjected to annealing if necessary.
- the thickness of the lead terminal is preferably 0.08-1. Omm.
- At least a portion of the lead terminal that is in close contact with the exterior material is preferably subjected to a surface treatment for improving adhesion to the exterior material.
- a surface treatment for improving adhesion to the exterior material.
- this type of surface treatment include a surface roughening treatment such as a chemical etching treatment, and a corrosion-resistant film such as a film composed of a partially aminated phenolic polymer, a phosphoric acid compound, and a titanium phosphate compound, or a zinc phosphate-based film.
- Base treatment, surface treatment with a titanium-based coupling agent or an aluminate-based coupling agent, and the like can be given.
- a resin film containing a metal-adhesive resin be fused to the lead terminals in advance.
- a resin that adheres to the surface of a metal flat lead terminal is used.
- acid-modified polypropylene, acid-modified polyethylene, acid-modified poly (ethylene-propylene) copolymer, and ionomer can be used. It is.
- the exterior material is not particularly limited as long as it can cover the battery element and has flexibility so that the electrolyte does not leak, but is not particularly limited.
- a laminated film in which layers are laminated is particularly preferably used.
- As this kind of laminate film for example, a laminate in which a heat-fusible resin having a thickness of 3 ⁇ m to 200 ⁇ m is adhered to a metal foil having a thickness of 10 ⁇ m to 100 ⁇ m can be used.
- As the material of the metal foil Al, Ti, Ti-based alloy, Fe, stainless steel, Mg-based alloy and the like can be used.
- heat-fusible resin examples include polypropylene, polyethylene, acid-modified products thereof, polyesters such as polyphenylene sulfide and polyethylene terephthalate, polyamides, ethylene-vinyl acetate copolymer, and the like.
- the positive electrode plate is not particularly limited as long as it absorbs positive ions or emits negative ions at the time of discharge, and (i) a metal oxide such as LiMnO, LiMnO, LiCoO, and LiNiO;
- Conductive polymers such as polyacetylene and polyaniline, (iii) general formula (R—Sm) n (R is aliphatic or aromatic, S is sulfur, and m and n are m ⁇ l, n ⁇ l
- a positive electrode material for secondary batteries such as disulfide compounds (dithioglycol, 2,5-dimercapto-1,3,4-thiadiazole, S-triazine-2,4,6 trithiol, etc.) represented by Anything can be used.
- the positive electrode plate can be formed by mixing the positive electrode active material with an appropriate binder or a functional material.
- binders include halogen-containing polymers such as polyvinylidene fluoride and the like, and functional materials such as acetylene black, polypyrrole, and polyaline for securing electron conductivity.
- halogen-containing polymers such as polyvinylidene fluoride and the like
- functional materials such as acetylene black, polypyrrole, and polyaline for securing electron conductivity.
- examples include molecules, polymer electrolytes for securing ionic conductivity, and complexes thereof.
- the negative electrode plate is not particularly limited as long as it is a material capable of occluding and releasing cations.
- Crystalline carbon such as graphite carbon obtained by heat-treating natural graphite, coal, petroleum pitch, or the like at a high temperature
- Conventionally known negative electrode active materials for secondary batteries such as amorphous carbon obtained by heat-treating petroleum pitch coaters and acetylene pitch coaters, and lithium alloys such as metallic lithium and AlLi can be used.
- Examples of the electrolytic solution impregnated in the battery element include ethylene carbonate, propylene carbonate, dimethinolecarbonate, ethynolecarbonate, methinoleethynolecarbonate, ⁇ -butyrolataton, ⁇ , N'-dimethyl.
- Highly polar polar electrolytes such as formamide, dimethylsulfoxide, ⁇ -methylpyrrolidone, and m-talesol that can be used as secondary battery electrolytes
- Cations of alkali metals such as Li, K, and Na with CIO-, BF-, PF-, C
- a solution containing a salt which also has an auronic power of a compound containing a logen can be mentioned.
- a solvent or an electrolyte salt composed of these basic solvents can be used alone or in combination.
- a gel electrolyte made of a polymer gel containing an electrolytic solution may be used.
- sulfolane, dioxane, dioxolan, 1,3-propane sultone, tetrahydrofuran, vinylene carbonate and the like may be added in a small amount.
- the above is the power that is a material system as a lithium ion secondary battery.
- the present invention is also applicable to a lead battery, a nickel cadmium battery, and a nickel metal hydride battery. Further, the present invention is also applicable to an electric device in which an electric device element such as a capacitor element exemplified by a capacitor such as an electric double layer capacitor and an electrolytic capacitor is sealed with an exterior film.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006510795A JP4692772B2 (ja) | 2004-03-09 | 2005-03-09 | フィルム外装電気デバイスおよび該フィルム外装電気デバイス用の集電部被覆部材 |
US10/591,715 US20070207378A1 (en) | 2004-03-09 | 2005-03-09 | Film Covered Electric Device And Collector Covering Member For The Film Covered Electric Device |
EP05720352A EP1734596A4 (en) | 2004-03-09 | 2005-03-09 | FILM-CONNECTED ELECTRICAL EQUIPMENT AND COLLECTOR DEFLECTOR FOR THE FILM-CONNECTED ELECTRICAL EQUIPMENT |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004066403 | 2004-03-09 | ||
JP2004-066403 | 2004-03-09 |
Publications (1)
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WO2005086258A1 true WO2005086258A1 (ja) | 2005-09-15 |
Family
ID=34918331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/004080 WO2005086258A1 (ja) | 2004-03-09 | 2005-03-09 | フィルム外装電気デバイスおよび該フィルム外装電気デバイス用の集電部被覆部材 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070207378A1 (ja) |
EP (1) | EP1734596A4 (ja) |
JP (1) | JP4692772B2 (ja) |
KR (1) | KR100790631B1 (ja) |
CN (1) | CN100463250C (ja) |
WO (1) | WO2005086258A1 (ja) |
Cited By (14)
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JP2007067267A (ja) * | 2005-09-01 | 2007-03-15 | Nippon Chemicon Corp | コンデンサ |
JP2007115478A (ja) * | 2005-10-19 | 2007-05-10 | Toshiba Battery Co Ltd | 非水電解質電池 |
JP2007188746A (ja) * | 2006-01-13 | 2007-07-26 | Nissan Motor Co Ltd | バイポーラ電池、組電池及びそれらの電池を搭載した車両 |
JP2007227090A (ja) * | 2006-02-22 | 2007-09-06 | Toshiba Corp | 非水電解質電池、電池パック及び自動車 |
JP2011035049A (ja) * | 2009-07-30 | 2011-02-17 | Nisshinbo Holdings Inc | 電気二重層キャパシタ |
JP2011086623A (ja) * | 2009-10-13 | 2011-04-28 | Samsung Sdi Co Ltd | 二次電池 |
JP2012004141A (ja) * | 2011-10-03 | 2012-01-05 | Toshiba Corp | 非水電解質電池 |
JP2012033449A (ja) * | 2010-08-03 | 2012-02-16 | Nec Energy Devices Ltd | ラミネートフィルム外装積層型電池及びその製造方法 |
JP2012174438A (ja) * | 2011-02-21 | 2012-09-10 | Dainippon Printing Co Ltd | 電気化学セル用包装材料およびその製造方法 |
JP2012256616A (ja) * | 2012-09-25 | 2012-12-27 | Nissan Motor Co Ltd | バイポーラ電池の製造方法 |
JP2013041851A (ja) * | 2006-03-13 | 2013-02-28 | Nec Corp | フィルム外装電気デバイス |
JP2014060004A (ja) * | 2012-09-14 | 2014-04-03 | Toshiba Corp | 電池 |
US8920968B2 (en) | 2008-03-14 | 2014-12-30 | Nec Corporation | Overlaying member and film-covered electrical device |
JP2020053119A (ja) * | 2018-09-21 | 2020-04-02 | 積水化学工業株式会社 | 蓄電素子、蓄電素子の製造方法 |
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WO2009019568A2 (en) * | 2007-08-09 | 2009-02-12 | Sung On Andrew Ng | Battery arrangement and electrical system for automotive engine operation |
JP5294298B2 (ja) | 2008-01-31 | 2013-09-18 | Necエナジーデバイス株式会社 | フィルム外装電気デバイスの製造方法及び製造装置 |
KR100960619B1 (ko) | 2009-09-30 | 2010-06-07 | 주식회사 이아이지 | 전극조립체 전극 리드 연결부를 포함하는 전극조립체 및 이를 포함하고 있는 전기화학셀 |
US20130189567A1 (en) * | 2012-01-21 | 2013-07-25 | Minzhi YANG | Lithium Ion Battery and Manufacturing Method Thereof |
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KR20230039244A (ko) * | 2021-09-14 | 2023-03-21 | 에스케이온 주식회사 | 보호 부재를 갖는 배터리 셀 |
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- 2005-03-09 JP JP2006510795A patent/JP4692772B2/ja active Active
- 2005-03-09 KR KR1020067019241A patent/KR100790631B1/ko not_active IP Right Cessation
- 2005-03-09 WO PCT/JP2005/004080 patent/WO2005086258A1/ja active Application Filing
- 2005-03-09 US US10/591,715 patent/US20070207378A1/en not_active Abandoned
- 2005-03-09 EP EP05720352A patent/EP1734596A4/en not_active Withdrawn
- 2005-03-09 CN CNB2005800077549A patent/CN100463250C/zh not_active Expired - Fee Related
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JP2003142067A (ja) * | 2001-10-31 | 2003-05-16 | Mitsubishi Cable Ind Ltd | シート状電池 |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007067267A (ja) * | 2005-09-01 | 2007-03-15 | Nippon Chemicon Corp | コンデンサ |
JP2007115478A (ja) * | 2005-10-19 | 2007-05-10 | Toshiba Battery Co Ltd | 非水電解質電池 |
JP2007188746A (ja) * | 2006-01-13 | 2007-07-26 | Nissan Motor Co Ltd | バイポーラ電池、組電池及びそれらの電池を搭載した車両 |
JP2007227090A (ja) * | 2006-02-22 | 2007-09-06 | Toshiba Corp | 非水電解質電池、電池パック及び自動車 |
JP4599314B2 (ja) * | 2006-02-22 | 2010-12-15 | 株式会社東芝 | 非水電解質電池、電池パック及び自動車 |
JP2013041851A (ja) * | 2006-03-13 | 2013-02-28 | Nec Corp | フィルム外装電気デバイス |
US8920968B2 (en) | 2008-03-14 | 2014-12-30 | Nec Corporation | Overlaying member and film-covered electrical device |
JP2011035049A (ja) * | 2009-07-30 | 2011-02-17 | Nisshinbo Holdings Inc | 電気二重層キャパシタ |
JP2011086623A (ja) * | 2009-10-13 | 2011-04-28 | Samsung Sdi Co Ltd | 二次電池 |
US8974952B2 (en) | 2009-10-13 | 2015-03-10 | Samsung Sdi Co., Ltd. | Rechargeable battery |
JP2012033449A (ja) * | 2010-08-03 | 2012-02-16 | Nec Energy Devices Ltd | ラミネートフィルム外装積層型電池及びその製造方法 |
JP2012174438A (ja) * | 2011-02-21 | 2012-09-10 | Dainippon Printing Co Ltd | 電気化学セル用包装材料およびその製造方法 |
JP2012004141A (ja) * | 2011-10-03 | 2012-01-05 | Toshiba Corp | 非水電解質電池 |
JP2014060004A (ja) * | 2012-09-14 | 2014-04-03 | Toshiba Corp | 電池 |
US9614194B2 (en) | 2012-09-14 | 2017-04-04 | Kabushiki Kaisha Toshiba | Battery |
JP2012256616A (ja) * | 2012-09-25 | 2012-12-27 | Nissan Motor Co Ltd | バイポーラ電池の製造方法 |
JP2020053119A (ja) * | 2018-09-21 | 2020-04-02 | 積水化学工業株式会社 | 蓄電素子、蓄電素子の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070207378A1 (en) | 2007-09-06 |
JP4692772B2 (ja) | 2011-06-01 |
KR20060126829A (ko) | 2006-12-08 |
CN1930701A (zh) | 2007-03-14 |
CN100463250C (zh) | 2009-02-18 |
EP1734596A1 (en) | 2006-12-20 |
KR100790631B1 (ko) | 2008-01-02 |
EP1734596A4 (en) | 2010-10-20 |
JPWO2005086258A1 (ja) | 2008-01-24 |
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