WO2013012085A1 - 円筒形電池 - Google Patents
円筒形電池 Download PDFInfo
- Publication number
- WO2013012085A1 WO2013012085A1 PCT/JP2012/068522 JP2012068522W WO2013012085A1 WO 2013012085 A1 WO2013012085 A1 WO 2013012085A1 JP 2012068522 W JP2012068522 W JP 2012068522W WO 2013012085 A1 WO2013012085 A1 WO 2013012085A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery case
- case
- electrode group
- electrode
- spacer
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 35
- 125000006850 spacer group Chemical group 0.000 claims description 160
- 239000011149 active material Substances 0.000 claims description 51
- 238000003466 welding Methods 0.000 claims description 50
- 239000011248 coating agent Substances 0.000 claims description 28
- 238000000576 coating method Methods 0.000 claims description 28
- 238000005452 bending Methods 0.000 claims description 17
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000007773 negative electrode material Substances 0.000 description 21
- 238000012986 modification Methods 0.000 description 19
- 230000004048 modification Effects 0.000 description 19
- 238000003860 storage Methods 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 5
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 244000126211 Hericium coralloides Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 1
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001068 laves phase Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M10/0468—Compression means for stacks of electrodes and separators
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M10/24—Alkaline accumulators
- H01M10/28—Construction or manufacture
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M10/34—Gastight accumulators
- H01M10/345—Gastight metal hydride accumulators
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
- H01M50/466—U-shaped, bag-shaped or folded
-
- 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 cylindrical battery.
- a cylindrical electrode is formed by winding a belt-like positive electrode plate and a negative electrode plate in a spiral shape through a belt-like separator around a cylindrical battery case.
- a cylindrical electrode group is housed in the battery case so that the inside of the battery case is substantially solid.
- the negative electrode is collected by surface contact between the negative electrode located on the outermost periphery and the battery case.
- the present applicant is developing a low-capacity cylindrical battery corresponding to the application in the cylindrical battery whose capacity has been increasing in recent years. Specifically, it is considered to reduce the size of the electrode group with respect to the battery case, such as reducing the outer diameter of the cylindrical electrode group housed in the battery case.
- the present invention has been made to solve the above problems, and in the case where a cylindrical battery case accommodates an electrode group smaller than the battery case, the configuration of the battery case and the electrode group is effectively utilized. Thus, ensuring the contact between one of the electrodes of the electrode group and the battery case is a main desired problem.
- the cylindrical battery according to the present invention has a cylindrical battery case and an electrode group including a positive electrode, a negative electrode, and a separator, and a space communicating vertically between the electrode group and the battery case is formed. And one collector terminal of the positive electrode or the negative electrode extends in a direction away from a central axis of the battery case with respect to the electrode group, and is in contact with a bottom surface of the battery case. To do.
- the current collecting terminal of one electrode constituting the electrode group is from the central axis of the battery case. Since it extends in the direction away from and contacts the bottom surface of the battery case, the current collecting terminal can be reliably electrically connected to the battery case by welding or the like. In addition, since the current collecting terminals are extended outside the electrode group, it is easy to provide a plurality of current collecting terminals, and it is possible to make contact with the battery case at a plurality of locations, thereby improving current collecting efficiency. it can. Furthermore, since it is a cylindrical battery case, it can be strengthened in strength against an increase in internal pressure.
- the electrode group smaller than the battery case is arranged with respect to the cylindrical battery case, the space in the battery case can be increased, and not only the increase in the battery internal pressure can be prevented, but also the cylindrical shape.
- the amount of electrolyte in the battery can also be increased.
- One of the positive electrode and the negative electrode is an electrode plate configured by applying an active material to a current collector, and sandwiches the uncoated portion with a linear uncoated portion where the active material is not applied
- the current collector is bent at the uncoated portion so that the coated portions on both sides face each other, and the non-coated portion is coated with the active material.
- the current collecting terminal is formed by bending a part of the coating portion outward. If this is the case, the coated part is formed on both sides across the straight uncoated part, bent at the uncoated part, and bent from part of the uncoated part to the outside to form a current collecting terminal. Therefore, two coating parts are collected by the common current collection terminal, and the variation in the current collection efficiency can be suppressed to improve the current collection efficiency.
- the current collector terminal is formed by bending a part of the uncoated part, the process for forming the current collector terminal in the coated part or the process for welding and connecting the current collector terminal to the coated part is performed. It can be made unnecessary.
- the uncoated portion is linear, the active material can be stripe-coated on the current collector in the manufacturing stage of the electrode plate, and the production efficiency of the electrode plate can be improved.
- the current collecting terminal is formed by cutting a part of the uncoated portion and bending the inside of the notched portion outward. Is preferably formed. If this is the case, the current collector terminal can be formed simply by cutting the uncoated part and bending the current collector terminal, and there is no need to weld the current collector terminal to the current collector. Therefore, it is not necessary to consider the shape of the current collecting terminal portion when cutting the current collecting terminal from.
- a part of the uncoated portion is bent outward from one of the coated portions, with the boundary between the coated portion and the uncoated portion or the inner side of the boundary as a fold line. Since the length dimension of the boundary between the coated part and the uncoated part is longer than the width dimension of the uncoated part (the dimension in the direction along the opposing direction of the coated parts), the boundary is used as a fold line. Thereby, the width dimension of a current collection terminal can be set variously. As a result, the shape of the current collecting terminal can be set in accordance with the structure outside the electrode plate, and the width dimension of the current collecting terminal can be increased as much as possible, so that the current collecting efficiency can be improved. it can.
- the current collector terminal formed by bending and the uncoated part be positioned in substantially the same plane.
- the uncoated portion can be brought into contact with the bottom surface of the battery case, and the current collecting terminal can be brought into contact with the bottom surface of the battery case. Therefore, when welding the current collecting terminal, the electrode group can be stabilized in the battery case, and the welding operation can be facilitated.
- it can arrange
- the thickness of the active material applied to the outside of the current collector is smaller than the thickness of the active material applied to the inside of the current collector in at least one of the bent coating portions on both sides. Is desirable.
- the ratio between the negative electrode capacity and the positive electrode capacity (NP ratio) is sufficiently ensured, for example, the negative electrode active material present in a portion not sandwiched between the positive electrodes is hardly used in charge and discharge. For this reason, even if the negative electrode active material present in this portion is removed, the influence on the battery performance is extremely small. Therefore, by using the above configuration, it is possible to reduce the amount of active material used while ensuring battery performance.
- the charge / discharge cycle performance can be improved by increasing the substantial NP ratio by moving the active material in the outer portion of the current collector to the active material in the inner portion.
- the current collector terminal formed by being bent outward by making the thickness of the active material coated on the outside of the current collector smaller than the thickness of the active material coated on the inside of the current collector Can be lengthened and welding can be facilitated.
- the amount of active material applied on the outside of the current collector in both of the folded coating portions on both sides is greater than the amount of active material applied on the inside of the current collector. It is desirable that the amount be less. Since the coating amount on the outside is reduced in both coating portions, it is not necessary to peel off the active material in one coating portion, and the active materials in the coating portions on both sides can be made the same amount.
- the current collecting terminal is welded to the bottom surface of the battery case. If it is this, electrical connection with a battery case and a current collection terminal can be made more reliable.
- the uncoated portion is accommodated so as to be positioned on the bottom side of the battery case.
- the current collecting terminal is in contact with the bottom surface and the inner peripheral surface of the battery case. If this is the case, the current collector terminal comes into contact with the surface of the battery case having a different angle, so that the electrical connection can be made more reliable.
- the cylindrical battery is provided with a space communicating vertically with a welding rod for welding the electrode group to the bottom surface or the inner peripheral surface of the battery case. If it is this, the current collection terminal which contacts the bottom face of a battery case can be made easy to weld.
- the cylindrical battery has a spacer for fixing the electrode group to the battery case, and the spacer forms a space communicating with the upper and lower sides.
- the spacer since the electrode group is fixed by the spacer, it is possible to prevent the electrode group from rattling with respect to the battery case, and to prevent the active material from falling off the electrode plate, thereby preventing deterioration of the charge / discharge performance. Can do.
- the electrode group can be welded to the battery case after the electrode group is positioned and fixed with respect to the battery case using the spacer.
- the spacer forms a pair provided between an inner peripheral surface of the battery case and each of the pair of outer surfaces, and the pair of spacers is seen from the center axis direction of the battery case. It is desirable that the shape be asymmetric with respect to the electrode group. If it is this, since a pair of spacer is asymmetrical shape, it can make it easy to visually recognize the position of the current collection terminal of a positive electrode or a negative electrode based on the shape of a spacer.
- the electrode group When an electrode group having a substantially rectangular parallelepiped shape is arranged in a cylindrical battery case, the electrode group is arranged in the battery case and becomes symmetrical when viewed from the central axis direction, for example, a positive electrode plate or a negative electrode plate.
- the problem is that the position of the current collector terminal is difficult to see at a glance.
- the present invention is easy to visually recognize when there is one positive or negative current collecting terminal in the electrode group and there is one welded portion of the current collecting terminal welded to the inner surface of the battery case. The effect becomes more remarkable.
- each of the spacers has a flat plate electrode contact portion having a contact surface in contact with the electrode group on one surface, and extends from the other surface of the electrode contact portion, and the battery. It is desirable that the case contact portion is in contact with the inner peripheral surface of the case, and the extension position of the case contact portion from the electrode contact portion in each spacer is an asymmetric position with respect to the electrode group. If it is this, the recessed part formed between an electrode contact part and a case contact part becomes a welding space, and the current collection terminal of a positive electrode plate or a negative electrode plate can be welded to the bottom face of a battery case by the said welding space. At this time, since the extended position from the electrode contact portion of the case contact portion of each spacer is an asymmetric position with respect to the electrode group, the position of the current collecting terminal can be easily determined at a glance, and productivity can be improved. Can be improved.
- the extended position of the case contact portion from the electrode contact portion in the spacer is away from the center in the width direction of the electrode contact surface. If this is the case, since the case contact portion is away from the center in the width direction of the electrode contact portion, the space on one side of the case contact portion can be increased, and welding of the current collecting terminals is facilitated.
- the current collecting terminal When the positive or negative current collecting terminal is welded to the bottom surface of the battery case, the current collecting terminal is formed between the side surface of the electrode group and the inner peripheral surface of the battery case. It is desirable that the space is located within a large space in the space partitioned by the case contact portion. In this case, when the electrode group and the spacer are arranged in the battery case, when viewed from the central axis direction, the position of the current collecting terminal can be recognized by looking at a large space among the partitioned spaces. The workability of the current collector terminal welding work can be improved, and the productivity can be improved.
- Each of the spacers has a flat electrode contact portion having a contact surface on one surface that contacts the outermost surface in the stacking direction of the electrode group, and an inner periphery of the battery case extending from the other surface of the electrode contact portion. It is preferable that the number of case contact portions of one spacer and the number of case contact portions of the other spacer are different from each other. If it is this, the recessed part formed between an electrode contact part and a case contact part becomes a welding space, and the current collection terminal of a positive electrode or a negative electrode can be welded to the bottom face of a battery case by the said welding space. At this time, since the number of case contact portions of each spacer is different, the position of the current collecting terminal can be easily determined at a glance, and productivity can be improved.
- the spacer fixes the electrode group at a position eccentric from the center position of the battery case. If this is the case, the center of gravity of the electrode group having a large specific gravity will be located vertically below the center position of the battery case when the cylindrical battery is tilted, and the contact area between the electrolyte and the electrode group will be increased. Can do. Thereby, the penetration of the electrolytic solution into the electrode group during the chemical conversion can be facilitated.
- the spacer is a pair of spacers provided so as to sandwich the electrode group, the electrode group can be reliably fixed to the battery case. At this time, it is desirable that the pair of spacers have an asymmetric shape with respect to the electrode group when viewed from the central axis direction of the battery case. Thus, by making the pair of spacers asymmetrical, the electrode group can be fixed at a position eccentric with respect to the center position of the battery case.
- the electrode group can be fixed at a position eccentric with respect to the center position of the battery case by making the cross-sectional areas of the spacers different from each other.
- the configuration of the battery case and the electrode group is effectively utilized, The contact between the electrode and the battery case can be ensured.
- the top view and side view which show the modification of a negative electrode plate.
- the cross-sectional view of the alkaline storage battery in the modification of 1st Embodiment. The perspective view and side view which show the modification of a spacer.
- the cross-sectional view of the alkaline storage battery in the modification of 3rd Embodiment The cross-sectional view of the cylindrical battery of 4th Embodiment.
- the cross-sectional view of the alkaline storage battery in the modification of 4th Embodiment The cross-sectional view of the alkaline storage battery in the modification of 4th Embodiment.
- the cylindrical battery 100 is an alkaline storage battery such as a nickel / cadmium storage battery or a nickel / hydrogen storage battery. Specifically, this can be a low-capacity type having, for example, an AA type capacity of 1800 mAh or less, or an AA type capacity of 650 mAh or less. As shown in FIGS. A metal battery case 2 having a bottom cylindrical shape and a substantially rectangular parallelepiped electrode group 3 including a positive electrode plate 31, a negative electrode plate 32, and a separator 33 are arranged in the battery case 2.
- the battery case 2 has a bottomed cylindrical shape with nickel plating, and the upper opening is sealed with a sealing body 5 via an insulator 4 as shown in FIG. Further, a current collecting terminal 311 provided so as to protrude from the upper end portion of the positive electrode plate 31 is connected to the back surface of the sealing body 5 by, for example, welding directly or via a current collecting plate (not shown). It becomes the positive terminal. In the present embodiment, as will be described later, the current collecting terminal 321 of the negative electrode plate 32 positioned on the outermost side of the electrode group 3 is welded to the bottom surface 2B of the battery case 2.
- the electrode group 3 has a substantially rectangular parallelepiped shape in which the positive electrode plate 31 and the negative electrode plate 32 are laminated via a separator 33 made of, for example, a polyolefin nonwoven fabric.
- the separator 33 is impregnated with an electrolytic solution such as potassium hydroxide.
- the positive electrode plate 31 is obtained by filling a positive electrode substrate made of foamed nickel and a mixture of a nickel hydroxide active material and a cobalt compound of a conductive material into the hollow of the positive electrode substrate.
- the positive electrode plate 31 is pressure-molded after being filled with the mixture.
- a current collecting terminal 311 is provided on a part of the positive substrate.
- the nickel hydroxide active material is, for example, nickel hydroxide in the case of a nickel / cadmium storage battery, and nickel hydroxide to which calcium hydroxide is added in the case of a nickel / hydrogen storage battery.
- the negative electrode plate 32 is made of, for example, a negative electrode current collector made of a flat perforated steel plate plated with nickel, and a negative electrode active material coated on the negative electrode current collector.
- the negative electrode active material in the case of nickel-cadmium battery is a mixture of e.g. cadmium oxide powder and metallic cadmium powder, in the case of nickel-hydrogen storage battery, for example, primarily AB 5 type (rare earth) or is a powder of hydrogen absorbing alloy of AB 2 type (Laves phase).
- the electrode group 3 of the present embodiment is configured so that one positive electrode plate 31 is sandwiched between two opposite side surfaces of the positive electrode plate 31 with a negative electrode plate 32 through a separator. These are laminated, and are configured such that the negative electrode plates 32 are positioned on both outermost surfaces in the laminating direction L, respectively.
- the electrode group 3 of the present embodiment is accommodated in the battery case 2 so that the stacking direction L is orthogonal to the central axis direction C of the battery case 2 as shown in FIGS. 1 and 2. In this state, a space communicating vertically between the outer peripheral surface of the electrode group 3 and the inner peripheral surface of the battery case 2 is formed.
- the cylindrical battery 100 of the present embodiment includes a negative electrode plate 32 having a linear uncoated portion 32 ⁇ / b> A on which the negative electrode active material is not coated, and the uncoated portion 32 ⁇ / b> A. And a coating part 32B formed on both sides with the negative electrode active material applied.
- the uncoated portion 32A is formed symmetrically so as to include the center line H of the negative electrode current collector, and the coated portion 32B is symmetrical with respect to the uncoated portion 32A (see FIG. 5). .
- the negative electrode current collector is bent in a substantially U shape in the uncoated portion 32 ⁇ / b> A so that the coated portions 32 ⁇ / b> B on both sides face each other.
- the uncoated portion 32A and the coated portion 32B are bent so that the uncoated portion 32A and the coated portion 32B are at right angles to each other, with the boundary between the uncoated portion 32A and the coated portion 32B or slightly inside the boundary.
- the negative electrode plate 32 is formed with a current collecting terminal 321 welded to the bottom surface 2B of the battery case 2 by bending a part of the uncoated portion 32A outward. Accordingly, the current collecting terminal 321 of the negative electrode plate 32 extends outward from the electrode group 3, that is, extends in a direction away from the central axis of the battery case 2 with respect to the electrode group 3. Specifically, a current collecting terminal 321 is formed by making a cut 32C in a part of the uncoated portion 32A so as to have a desired current collecting terminal shape and bending the inside of the cut 32C outward.
- the notch 32C has a notch start point a and a notch end point b both located at the boundary between the uncoated part 32A and the coated part 32B, and the notch connecting the notch start point a and the notch end point b.
- a line c is formed in the uncoated portion 32A.
- the cut line c since the desired current collecting terminal shape has a rectangular shape, the cut line c has a substantially U shape in plan view.
- the current collection terminal 321 formed in the inside of the notch 32C is along the opposing direction of the coating part 32B of both sides by making a fold line a little inside the boundary or boundary of the uncoated part 32A and the coating part 32B. It is bent outward from the coating part 32B. In the bent state, the planar direction of the uncoated portion 32A and the planar direction of the current collecting terminal 321 are substantially the same direction, and the uncoated portion 32A and the current collecting terminal 321 are located in substantially the same plane.
- the uncoated portion 32A can be brought into contact with the bottom surface 2B of the battery case 2 while the negative electrode plate 32 is accommodated in the battery case 2, and the current collecting terminal 321 is brought into contact with the bottom surface 2B of the battery case 2.
- the negative electrode plate 32 can be stabilized in the battery case 2, and the welding operation can be facilitated. Further, the planar uncoated portion 32A can be disposed so as to contact the bottom surface 2B of the battery case 2, and the space in the battery case 2 can be used effectively.
- FIG. 5 although it is the cut line c which makes
- a through hole 32D that takes a desired current collecting terminal shape may be formed. By forming the through-hole 32D in this way, a space is formed between the uncoated portion 32A and the cut-out portion, thereby facilitating the work of bending the cut-out portion into the current collecting terminal shape. Can do.
- a method for manufacturing the negative electrode plate 32 configured as described above will be briefly described.
- a negative electrode active material is applied to both sides of a base material X having a long shape, leaving a straight uncoated region X1 at the center along the longitudinal direction.
- dotted lines indicate cutting lines.
- a cut 32C is formed in the uncoated portion 32A of the cut negative electrode plate 32, and the negative electrode plate 32 is bent into a substantially U shape and the current collecting terminal 321 is bent outward. The cut 32C may be formed before the negative electrode plate 32 is cut.
- the cylindrical battery 100 of this embodiment has a spacer 6 for fixing the electrode group 3 to the battery case 2 as shown in FIGS. 1 and 2.
- the spacer 6 is a pair of spacers 61 and 62 that are provided between the inner peripheral surface of the battery case 2 and the outer peripheral surface of the electrode group 3 and fix the electrode group 3 to the battery case 2.
- the pair of spacers 61 and 62 are disposed in a space between the inner peripheral surface of the battery case 2 and the side surface of the electrode group 3 so as to sandwich the electrode group 3 from the stacking direction L.
- the pair of spacers 61 and 62 are made of resin such as acrylic resin, polypropylene resin, nylon resin, or metal such as stainless steel, and have the same shape.
- the spacers 61 and 62 have an equal cross-sectional shape in the central axis direction C, and are in contact with substantially the entire outer surfaces 32a and 32b (see FIG. 2) of the negative electrode plate 32 in the stacking direction L. Further, the spacers 61 and 62 are in contact with the inner peripheral surface of the battery case 2 in the vertical direction. Thereby, the whole electrode group 3 will be pressed uniformly by a pair of spacers 61 and 62, and charging / discharging efficiency will improve.
- a portion that contacts the battery case 2 may be formed in an arc shape so as to contact over a predetermined range in the circumferential direction of the battery case 2. (See FIG. 2).
- separators 33 are provided on two side surfaces of the positive electrode plate 31 that is a nickel hydroxide electrode facing each other.
- the separator 33 has a bag shape, and the separator 33 is provided on the four side surfaces of the positive electrode plate 31 by accommodating the positive electrode plate 31 in the bag-shaped separator 33.
- the negative electrode plate 32 is bent into a substantially U shape as described above, and accommodated and laminated so as to sandwich the positive electrode plate 31 and the separator 33 between the coating portions 32B on both sides.
- the electrode group 3 configured by stacking as described above is arranged in the battery case 2, and the current collecting terminal 321 of the negative electrode plate 32 is connected to the bottom surface 2 ⁇ / b> B of the battery case 2 by welding.
- the electrode group 3 is sandwiched between the pair of spacers 61 and 62 from the stacking direction L, and an electrolytic solution is injected into the battery case 2.
- the current collecting terminal 311 of the positive electrode plate 31 is connected to the back surface of the sealing body 5 directly or via a current collecting plate (not shown), and the sealing body 5 is connected to the upper opening of the battery case 2 via the insulator 4. Secure by caulking.
- the coated part 32B is formed on both sides across the straight uncoated part 32A, and the uncoated part 32A is bent, Since the current collecting terminal 321 is formed by bending outward from a part of the uncoated portion 32A, the two coated portions 32B are collected by the common current collecting terminal 321. It can suppress and can improve current collection efficiency.
- the uncoated portion 32A is linear, the negative electrode active material can be stripe-coated on the negative electrode current collector in the manufacturing stage of the negative electrode plate 32, and the production efficiency of the negative electrode plate 32 is improved. Can do.
- the battery without various problems associated with the winding deviation and winding deviation of the electrode group 3 can be obtained. Can be provided. Moreover, since it is the cylindrical battery case 2, it can be strengthened in strength against the increase in internal pressure. Furthermore, since the electrode group 3 is pressed and fixed in the battery case 2 using the spacers 61 and 62, rattling of the electrode group 3 with respect to the battery case 2 can be prevented, and the positive electrode plate 31 and the negative electrode In addition to preventing the active material from falling off the plate 32 and preventing the deterioration of the charge / discharge performance, the charge / discharge performance can be improved.
- the present invention is not limited to the above embodiment.
- the current collecting terminal of the first embodiment is one that is bent outward from the coated part with the boundary between the coated part and the uncoated part as a folding line. It may not be the boundary of an uncoated part.
- the thickness of the negative electrode active material applied to the outside of the negative electrode current collector is applied to the inside of the negative electrode current collector. You may comprise so that it may become smaller than the thickness of the processed negative electrode active material. That is, in one or both of the folded coating portions 32B on both sides, the coating amount of the negative electrode active material applied to the outside of the negative electrode current collector is the negative electrode active material applied to the inside of the negative electrode current collector. You may comprise so that it may become less than the coating amount of a substance. In FIG. 10, the amount of the negative electrode active material applied to the outside of the negative electrode current collector was applied to the inside of the negative electrode current collector in both of the folded coating portions on both sides. The case where it is smaller than the coating amount of a negative electrode active material is shown.
- the amount of active material used can be reduced while ensuring battery performance.
- the charge / discharge cycle performance can be improved by increasing the substantial NP ratio.
- the thickness (coating amount) of the negative electrode active material applied to the outside of the negative electrode current collector is made smaller than the thickness (coating amount) of the negative electrode active material applied to the inside of the negative electrode current collector.
- the shape of the negative electrode plate may be configured to be bent into a substantially V shape or a substantially U shape by a fold line included in a straight uncoated portion. Furthermore, by increasing the area of the negative electrode facing the positive electrode or by applying a water repellent to the negative electrode surface, the oxygen gas absorption capacity at the end of charging can be improved.
- the configuration of the positive electrode plate may be the same as that of the negative electrode plate 32, in which a positive electrode active material is applied to a positive electrode current collector having a flat plate shape. Furthermore, the positive electrode plate may have the same configuration as that of the negative electrode plate of the embodiment.
- the spacers 61 and 62 are not limited to the first embodiment, and welding for welding the current collecting terminal 321 of the negative electrode plate 32 of the electrode group 3 to the bottom surface 2B of the battery case 2 as shown in FIGS. You may form the space S connected to the upper and lower sides (central axial direction C) in which a stick
- the space S communicates from the bottom surface 2 ⁇ / b> B of the battery case 2 to the upper opening of the battery case 2.
- the spacers 61 and 62 have an insertion hole 6H that communicates vertically with the welding rod inserted therein.
- the shape of the insertion hole 6H is not limited to a circle as long as welding can be performed by inserting a welding rod, and may be a polygon or an ellipse.
- the position where the insertion hole 6H is provided is a position where the current collecting terminal 321 of the negative electrode plate 32 is located in the insertion hole 6H in a state where the electrode group 3 is fixed by the spacers 61 and 62, and the position of the current collecting terminal 321 of the negative electrode plate 32 is It is determined according to the position.
- the current collecting terminals 321 of the negative electrode plate 32 can be welded after the electrode group 3 and the spacers 61 and 62 are inserted into the battery case 2.
- the spacers 61 and 62 are inserted after the current collecting terminal 321 of the negative electrode plate 32 is welded, the position of the electrode group 3 may be shifted before and after the spacers 61 and 62 are inserted. Although it is feared that the spacers 61 and 62 are inserted in this manner, the problem is not caused by welding after the spacers 61 and 62 are inserted.
- the welding space is formed by the external shape of the spacers 61 and 62 without providing the insertion holes 6H in the spacers 61 and 62. You may do it. Specifically, it can be considered that the cross-sectional shape is equal in the central axis direction C having the recess 6M on the side surface.
- an electrode contact portion 6A that contacts the outermost surface in the stacking direction of the electrode group 3, a case contact portion 6B that contacts the inner peripheral surface of the battery case 2, and a recess 6M formed therebetween. It is what has.
- the current collecting terminal 321 of the negative electrode plate 32 is welded to the bottom surface 2B of the battery case 2 by the welding space formed by the recess 6M of the spacers 61 and 62 after the spacers 61 and 62 are inserted. Can do.
- the spacers 61 and 62 have an equal cross-sectional shape in the central axis direction C, and have a plurality of case contact portions 6B intermittently along the central axis direction C as shown in FIG. It may have a generally comb-tooth shape. By comprising in this way, the usage-amount of the material of the spacers 61 and 62 can be reduced, and cost can be reduced. The injection of the electrolytic solution can be facilitated.
- R-shaped portions R1 and R2 are provided at two corners along the longitudinal direction formed by the electrode contact portion 6A and the case contact portion 6B.
- two corners R1 along the longitudinal direction formed by the electrode contact portion 6A and each case contact portion 6B and at least one corner along the short direction are rounded.
- a portion R2 is provided.
- the spacers 61 and 62 may have a square shape and may have a side that contacts the battery case 2.
- the battery case 2 and the spacers 61 and 62 are preferably in contact with each other on at least four sides.
- the space between the spacers 61 and 62 and the battery case 2 can be increased, which contributes to an increase in the amount of electrolyte and a decrease in increase in internal pressure.
- the battery case 2 and the spacers 61 and 62 are preferably in contact with each other on at least six sides.
- the shape of the battery case 2 can be kept substantially circular. If the shape of the battery case 2 is deformed and becomes an ellipse, there is a possibility that a defect will occur at the time of sealing.
- the side is a side parallel to the central axis direction.
- the spacers 61 and 62 in FIG. 17 are isosceles triangles whose bottoms are in contact with the negative electrode plate 32 in the cross section.
- the space between the spacers 61 and 62 and the battery case 2 can be increased, which contributes to an increase in the amount of electrolyte and a decrease in the increase in internal pressure.
- the cylindrical battery 100 according to the second embodiment is different from the first embodiment in the configuration of the negative electrode plate 32, and the method for electrically connecting the current collecting terminal 321 of the negative electrode plate 32 and the battery case 2. Is different.
- the negative electrode plate 32 sandwiches a linear active material non-holding portion (uncoated portion) 32A that does not hold the negative electrode active material and the active material non-holding portion 32A. And an active material holding part (coating part) 32B for holding the negative electrode active material.
- the active material non-holding portion 32A is formed symmetrically so as to include the center line H of the negative electrode current collector, and the active material holding portion 32B is symmetrical with respect to the active material non-holding portion 32A (see FIG. 20).
- the negative electrode current collector is bent in a substantially U shape in the active material non-holding portion 32A so that the active material holding portions 32B on both sides face each other.
- the active material non-holding part 32A and the active material holding part 32B are bent so that the active material non-holding part 32A and the active material holding part 32B are at right angles to each other with a fold line slightly inside the boundary. ing.
- the negative electrode plate 32 is formed with a current collecting terminal 321 that contacts the inner surface of the battery case 2 by bending a part of the active material non-holding portion 32A outward.
- a cut 32C is formed in a part of the active material non-holding portion 32A so as to have a desired current collecting terminal shape, and the inside of the cut 32C is bent outward to collect the current. Electrical terminals 321 are formed.
- both the notch start point a and the notch end point b are located on the side of the active material non-holding portion 32A, and the notch line c connecting the notch starting point a and the notch end point b is the active material non-holding portion. It is formed in 32A.
- the cut line c has a generally U shape in plan view.
- the current collecting terminal 321 formed inside the notch 32C is bent by the notch 32C and is inclined outward from the side portion of the active material non-holding portion 32A.
- the plane direction of the active material non-holding portion 32A and the plane direction of the current collecting terminal 321 are substantially the same direction, and the active material non-holding portion 32A and the current collecting terminal 321 are positioned in substantially the same plane.
- the active material non-holding portion 32A can be brought into contact with the bottom surface 2B of the battery case 2 while the negative electrode plate 32 is accommodated in the battery case 2, and the current collecting terminal 321 is brought into contact with the bottom surface 2B of the battery case 2. Can be contacted.
- the planar active material non-holding portion 32A can be arranged so as to contact the bottom surface 2B of the battery case 2, and the space in the battery case 2 can be used effectively.
- the current collector terminal 321 is configured to extend from the side portion of the active material non-holding portion 32A so as to extend from the side portion at the cut start point a and the distance from the side portion at the cut end point b. And are made different from each other.
- the distance from the side of the cut start point a is shorter than the distance from the side of the cut end point b, so that the folding line d connecting the cut start point a and the cut end point b is on the side. Since it is inclined with respect to the side, the current collecting terminal 321 is bent with respect to the side of the active material non-holding portion 32A by bending the inside of the cut 32C outward based on the cut start point a and the cut end point b. Inclined and extends outward.
- the manufacturing method of the negative electrode plate 32 configured in this way is as follows. First, as shown in FIG. 7 described above, the negative electrode active material is formed on both sides of the base material X having a long shape, leaving a straight uncoated region X1 in the center along the longitudinal direction. Is applied to form coating areas X2 and X3. And it cut
- a cut 32C is formed in the uncoated portion 32A of the cut negative electrode plate 32, and the negative electrode plate 32 is bent into a substantially U shape and the current collecting terminal 321 is bent outward. The cut 32C may be formed before the negative electrode plate 32 is cut.
- the current collecting terminal 321 of the negative electrode plate 32 is pressed against both the bottom surface 2B and the inner peripheral surface 2A of the battery case 2 by the spacer 6. It is in contact.
- the current collecting terminal 321 extending obliquely from the side portion of the active material non-holding portion 32A in the negative electrode plate 32 is an outer surface of the spacer 61 (in FIG. 22, the outer corner portion 6Ax of the electrode contact portion 6A). Is pressed against and contacts the inner peripheral surface 2A of the battery case 2. Further, the current collecting terminal 321 is pressed against and contacts the bottom surface 2B of the battery case 2 by the lower surface of the spacer 61 (the lower surface 6Ay of the electrode contact portion 6A in FIGS. 21 and 23).
- the current collecting terminal 321 of the negative electrode plate 32 contacts the bottom surface 2B and the inner peripheral surface 2A of the battery case 2 without being welded, and the spacer 61 Is pressed against the bottom surface 2B and the inner peripheral surface 2A, so that the operation of welding the current collecting terminal 321 to the battery case 2 is unnecessary, and the current collecting terminals 321 and 62 are simply inserted into the battery case 2. Since the battery case 2 can be brought into contact, the number of manufacturing steps can be reduced.
- the current collecting terminal 321 is pressed against the battery case 2 by the spacer 61, it is possible to maintain good electrical connection between the current collecting terminal 321 and the battery case 2, and to collect the current collecting terminal 321 and the battery.
- the resistance between the case 2 and the case 2 can be made as small as possible.
- the present invention is not limited to the second embodiment.
- the current collecting terminal 321 of the negative electrode plate 32 is integrally formed.
- another current collecting terminal may be welded to the negative electrode plate 32 and integrated. .
- the cylindrical battery 100 according to the third embodiment is different from the first embodiment in the configuration of the electrode group 3 and the configuration of the spacer 6 (the first spacer 61 and the second spacer 62).
- the electrode group 3 is formed by laminating one positive electrode plate 31 with the negative electrode plate 32 sandwiching two opposite side surfaces 31a and 31b of the positive electrode plate 31 with a separator 33 interposed therebetween. 1 or a plurality of electrode plate units 3U.
- the negative electrode plate 32 is bent into a substantially U shape to form a U-shaped electrode plate, and the flat plate portions 32m and 32n opposed to each other sandwich the positive electrode plate 31. It is bent to form a letter shape.
- the negative electrode plates 32 are positioned on both outermost surfaces in the stacking direction L, respectively.
- Adjacent electrode plate units 3U are electrically connected to each other when the flat plate portions 32m and 32n of the negative electrode plate 32 are in surface contact.
- the negative electrode plate 32 of the other electrode plate unit 3U is electrically connected to the bottom surface 2B of the battery case 2 by welding the current collecting terminal 321 coming out of one electrode plate unit 3U.
- the current collecting terminal 321 formed on the negative electrode plate 32 of one electrode plate unit 3U extends outward in the stacking direction from the central portion in the width direction of the negative electrode plate 32 (see FIG. 25), and is generally U-shaped. Is formed by bending a part of the bottom surface portion of the negative electrode plate 32 (the connecting portion between the flat plate portion 32m and the flat plate portion 32n) outward.
- a current collecting terminal 321 is formed by making a cut in a part of the bottom surface so as to have a desired current collecting terminal shape and bending the inside of the cut outward.
- the first spacer 61 is a flat electrode contact portion having a contact surface on one surface 61a that contacts substantially the entire outermost surface of the electrode group 3 in the stacking direction L (specifically, the outer surface 32a of the negative electrode plate 32).
- 61A and a case contact portion 61B that extends from the other surface 61b of the electrode contact portion 61A and contacts the inner peripheral surface 2A of the battery case 2, and is substantially T-shaped when viewed from the central axis direction C. It has the same cross-sectional shape.
- the case contact portion 61B contacts the inner peripheral surface 2A of the battery case 2 across the top and bottom.
- the second spacer 62 is a flat electrode contact portion having a contact surface on one surface 62a that contacts the entire outermost surface of the electrode group 3 in the stacking direction L (specifically, the outer surface 32b of the negative electrode plate 32).
- 62A and a case contact portion 62B that extends from the other surface 62b of the electrode contact portion 62A and contacts the inner peripheral surface 2A of the battery case 2, and is substantially T-shaped when viewed from the central axis direction C. It has the same cross-sectional shape.
- the case contact portion 62B contacts the inner peripheral surface 2A of the battery case 2 vertically.
- the case contact portions 61B and 62B of the first spacer 61 and the second spacer 62 are in contact with each other over the inner peripheral surface 2A, so that the entire electrode group 3 is uniformly formed by the pair of spacers 61 and 62.
- the charging / discharging efficiency is improved.
- the first spacer 61 and the second spacer 62 are asymmetric with respect to the electrode group 3 when viewed from the central axis direction C of the battery case 2 when placed in the battery case 2 as shown in FIG. It is comprised so that it may become a shape.
- the extension position of the case contact portion 61B from the electrode contact portion 61A in the first spacer 61 and the extension position of the case contact portion 62B from the electrode contact portion 62A in the second spacer 62 are:
- the electrode group 3 is configured to be in an asymmetric position.
- the case contact portion 61B of the first spacer 61 extends from the central portion of the electrode contact portion 61A, and the first spacer 61 is vertically symmetrical with respect to the case contact portion 61B.
- the case contact portion 62B of the second spacer 62 extends from a portion shifted from the center portion of the electrode contact portion 62A toward the end side, and the second spacer 62 is asymmetrical with respect to the case contact portion 62B. Shape. As described above, since the extension positions of the case contact portions 61B and 62B of the spacers 61 and 62 are different, the length dimension of the case contact portion 61B of the first spacer 61 is the case contact portion of the second spacer 62. It becomes a structure larger than the length dimension of 62B.
- one current collecting terminal 321 of the negative electrode plate 32 of the electrode group 3 extends to the second spacer 62 side on the bottom surface 2B of the battery case 2.
- the case contact portion 62 ⁇ / b> B is seen from the center portion to see the second spacer 62.
- the position of the electric terminal 321 can be easily determined. That is, by determining the extension side of the current collecting terminal 321 with respect to the first spacer 61 and the second spacer 62, the position of the current collecting terminal 321 can be easily determined.
- the current collecting terminal 321 is larger in the space formed between the second spacer 62 and the inner peripheral surface 2A of the battery case 2 among the two spaces S1 and S2 partitioned by the case contact portion 62B. It is comprised so that it may be located in the other space S2.
- the position of the current collecting terminal 321 can be easily determined by looking at the larger space S2, and the current collecting terminal.
- the workability of the work of welding 321 to the bottom surface 2B of the battery case 2 can be improved.
- the present invention is not limited to the third embodiment.
- the pair of spacers 61 and 62 are both substantially T-shaped.
- the number of case contact portions 61B of the first spacer 61 The number of the case contact portions 62B of the two spacers 62 may be different from each other.
- FIG. 26 the case where the case contact part 61B of the 1st spacer 61 is one and the case contact part 62B of the 2nd spacer 62 is two is shown.
- the case contact part 62B of the 2nd spacer 62 is provided in the symmetrical position in the width direction on both sides of the center part of electrode contact part 62A.
- the two case contact portions 62B have the same length dimension.
- the current collecting terminal 321 of the negative electrode plate 32 is positioned between the two case contact portions 62B, and the position of the current collecting terminal 321 can be easily determined by looking between the two case contact portions 62B. Can be determined.
- each of the first spacer and the second spacer has a plurality of case contact portions
- the extension positions of at least one case contact portion of each spacer are different from each other and are asymmetrical. Also good.
- the first spacer 61 and the second spacer 62 fill the space between the electrode group 3 and the inner peripheral surface 2A of the battery case 2 in addition to the electrode contact portion and the case contact portion as in the above embodiment.
- at least one of the first spacer 61 or the second spacer 62 may have a triangular prism shape of an isosceles triangle whose bottom is in contact with the negative electrode plate in the cross section. good.
- it may have an arc shape that contacts the inner peripheral surface of the battery case over a predetermined range in the circumferential direction.
- only one electrode plate unit among a plurality (specifically two) electrode plate units is configured to have a current collecting terminal of a negative electrode plate. May have a current collecting terminal of the negative electrode plate.
- the electrode group of the embodiment is arranged in the battery case so that the stacking direction is orthogonal to the central axis direction of the battery case, but the stacking direction is the same as the central axis direction of the battery case. It may be arranged so that
- the negative electrode plate is comprised as a substantially U-shaped electrode plate, it is good also considering a negative electrode plate as a flat electrode plate.
- the positive electrode plate may be configured as a substantially U-shaped electrode plate, and the negative electrode plate may be sandwiched between the positive electrode plates.
- the positive electrode plate and the negative electrode plate may be configured as a substantially U-shaped electrode plate. You may laminate
- the cylindrical battery 100 according to the fourth embodiment is different from the first to third embodiments in the configuration of a pair of spacers 6 (a first spacer 61 and a second spacer 62).
- the pair of spacers 61 and 62 fix the electrode group 3 at a position eccentric from the center position H1 of the battery case 2. That is, as shown in FIG. 28, the center position (center of gravity position) H ⁇ b> 2 (viewed from the central axis direction C) of the electrode group 3 fixed to the battery case 2 is different from the center position H ⁇ b> 1 of the battery case 2. Position. Thereby, the center of gravity position (not shown) of the entire cylindrical battery 100 is different from the center position H1 of the battery case 2.
- the pair of spacers 61 and 62 are asymmetric with respect to the electrode group 3 when viewed from the central axis direction C of the battery case 2, and the spacers 61 and 62 are arranged in the stacking direction L of the electrode group 3.
- the cross-section is substantially semicircular and has an equivalent cross-sectional shape.
- the case contact surface 6y contacts the inner peripheral surface 2A of the battery case 2 vertically.
- the cross-sectional area surrounded by the electrode contact surface 6x and the case contact surface 6y in the cross section orthogonal to the central axis direction C is The first spacer 61 and the second spacer 62 are different from each other.
- the second spacer 62 is configured to have a large contour cross-sectional area. That is, the center position H2 of the electrode group 3 is a position eccentric to the first spacer 61 side with respect to the center position H1 of the battery case 2.
- the second spacer 62 having a large contour cross-sectional area is formed with a welding hole 62h into which a welding rod for welding the current collecting terminal 321 of the negative electrode plate 32 to the bottom surface 2B of the battery case 2 is inserted.
- the weld hole 62h is not particularly limited as long as it has a circular shape as shown in FIG.
- the cylindrical battery 100 When the above-described cylindrical battery 100 is formed into a battery case, the cylindrical battery 100 is turned over as shown in FIG.
- the pair of spacers 61 and 62 fix the electrode group 3 at a position eccentric from the center position H1 of the battery case 2, so that the cylindrical battery 100 is In the tilted state, the center position H2 of the electrode group 3 having a large specific gravity is positioned vertically below the center position H1 of the battery case 2, so that the contact area between the electrolyte and the electrode group 3 can be increased. . Thereby, the penetration of the electrolytic solution into the electrode group 3 at the time of battery case formation can be facilitated.
- the spacer shape is not limited to the fourth embodiment, and the second spacer 62 may not have the weld hole 62h as shown in FIG.
- the current collecting terminal 321 of the negative electrode plate 32 is welded before the spacers 61 and 62 are arranged on the battery case 2, or is not welded to the battery case 2 by the lower surface of the second spacer 62. It is conceivable to make a press contact with the bottom surface 2B.
- the spacers 61 and 62 of the fourth embodiment have a substantially semicircular cross section made up of a planar electrode contact surface 6x and an arcuate case contact surface 6y. Any shape can be used as long as it has a shape having 6x and a case contact surface 6y and fixes the electrode group 3 at a position eccentric from the center position H1 of the battery case 2.
- each spacer 61, 62 has a contact surface that contacts substantially the entire outermost surface of the electrode group 3 in the stacking direction L (specifically, the outer surface 32 a of the negative electrode plate 32) on one side. It is good also as what has the flat electrode contact part 6A which 6a has, and the case contact part 6B which extends from the other surface 6b of this electrode contact part 6A, and contacts the inner peripheral surface 2A of the battery case 2. And in order to fix the electrode group 3 in the position eccentric with respect to the center position H1 of the battery case 2, it is possible to comprise so that the length of the case contact part 6B in each spacer 61 and 62 may mutually differ.
- a recess formed between the electrode contact portion 6A and the case contact portion 6B becomes a welding space, and the current collecting terminal 321 of the negative electrode plate 32 is connected to the battery case by the welding space. 2 can be welded to the bottom surface 2B.
- the lengths of the case contact portions 6B of the spacers 61 and 62 are different from each other, for example, by extending the current collecting terminal 321 to the long spacer 62 side of the case contact portion 6B, the current collecting terminals 321 at a glance. The position can be easily determined, and the productivity can be improved.
- only one of the plurality (specifically, two) of the electrode plate units is configured to have a current collecting terminal of the negative electrode plate. You may comprise so that a unit may have the current collection terminal of a negative electrode plate.
- the present invention can be applied to secondary batteries such as lithium ion secondary batteries in addition to alkaline storage batteries, or may be applied to primary batteries.
- the configuration of the battery case and the electrode group is effectively used, and one electrode of the electrode group and the battery case Contact can be ensured.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Cell Separators (AREA)
Abstract
Description
さらに、円筒状の電池ケースであることから、内部圧力の上昇に対して強度的に強くすることができる。また、円筒形の電池ケースに対して当該電池ケースよりも小さい電極群を配置することから、電池ケース内の空間を大きくすることができ、電池内圧の上昇を防ぐことができるだけでなく、円筒形電池内の電解液量を多くすることもできる。
以下に本発明に係る円筒形電池の第1実施形態について図面を参照して説明する。
まず、図7に示すように、長尺形状をなす母材Xに対して、その長手方向に沿って中心部に直線状の未塗工領域X1を残して、その両側に負極活物質を塗工して塗工領域X2、X3を形成する。そして、負極板32の展開状態と同一形状となるように切断していく。なお、図7において点線が切断線を示している。その後、切断された負極板32の未塗工部32Aに切れ込み32Cを形成し、負極板32を概略Uの字状に折り曲げるとともに集電端子321を外側に折り曲げる。なお、切れ込み32Cは負極板32を切断する前に形成しても良い。
このように構成した第1実施形態に係る円筒形電池100によれば、直線状の未塗工部32Aを挟んで両側に塗工部32Bを形成して、未塗工部32Aで折り曲げるとともに、未塗工部32Aの一部から外側に折り曲げて集電端子321が形成されているので、共通の集電端子321により2つの塗工部32Bが集電されるので、集電効率のばらつきを抑えて集電効率を向上させることができる。また、未塗工部32Aが直線状をなすことから、負極板32の製造段階において、負極集電体に負極活物質をストライプ塗工することができ、負極板32の生産効率を向上させることができる。
なお、本発明は前記実施形態に限られるものではない。例えば、前記第1実施形態の集電端子は、塗工部及び未塗工部の境界を折り曲げ線として当該塗工部よりも外側に折り曲げられるものであったが、折り曲げ線が塗工部及び未塗工部の境界でなくても良い。また、図9に示すように、集電端子321が、塗工部32Bの対向する方向とは直交する方向(折り曲げ線に沿った方向)に延出するように構成しても良い。この場合は、集電端子321の長さの選択の自由度を増すことができる。
次に本発明に係る円筒形電池の第2実施形態について図面を参照して説明する。なお、前記第1実施形態に対応する部材には同一の符号を付している。
このように構成した第2実施形態に係るアルカリ蓄電池100によれば、負極板32の集電端子321が、電池ケース2の底面2B及び内側周面2Aに溶接されることなく接触し、スペーサ61により底面2B及び内側周面2Aに押圧されているので、集電端子321を電池ケース2に溶接する作業を不要にし、スペーサ61、62を電池ケース2に挿入するだけで、集電端子321と電池ケース2とを接触させることができるので、製造工数を削減することができる。また、集電端子321がスペーサ61により電池ケース2に押圧されていることから、集電端子321と電池ケース2との電気的な接続を良好に保つことができるとともに、集電端子321と電池ケース2との間の抵抗を可及的に小さくすることができる。
なお、本発明は前記第2実施形態に限られるものではない。例えば、前記第2実施形態では、負極板32の集電端子321を一体形成したものであったが、負極板32に別部品の集電端子を溶接して一体化するものであっても良い。
次に本発明に係る円筒形電池の第3実施形態について図面を参照して説明する。なお、前記各実施形態に対応する部材には同一の符号を付している。
このように構成した第3実施形態に係るアルカリ蓄電池100によれば、一対のスペーサ61、62が電池ケース2の中心軸方向Cから見て電極群3に対して非対称形状であるので、電池ケース2に電極群3及び一対のスペーサ61、62を配置した状態で、非対称形状のスペーサ61、62を基準にして電池ケース2に溶接すべき集電端子321の位置(溶接箇所)を判別し易くすることができる。これにより、溶接作業の作業性を向上させることができるとともに、電池100の生産性を向上させることができる。
なお、本発明は前記第3実施形態に限られるものではない。例えば、前記実施形態では一対のスペーサ61、62がいずれも概略T字形状をなすものであったが、その他、図26に示すように、第1のスペーサ61のケース接触部61Bの数と第2のスペーサ62のケース接触部62Bの数とが互いに異なるように構成しても良い。図26においては第1のスペーサ61のケース接触部61Bが1つであり、第2のスペーサ62のケース接触部62Bが2つの場合を示している。そして、第2のスペーサ62のケース接触部62Bは、電極接触部62Aの中央部を挟んで幅方向において対称位置に設けられている。つまり、2つのケース接触部62Bは同一の長さ寸法を有する。このような構成において、負極板32の集電端子321は2つのケース接触部62Bの間に位置することになり、2つのケース接触部62Bの間を見ることによって集電端子321の位置を容易に判別することができる。
次に本発明に係る円筒形電池の第4実施形態について図面を参照して説明する。なお、前記各実施形態に対応する部材には同一の符号を付している。
このように構成した第4実施形態に係るアルカリ蓄電池100によれば、対のスペーサ61、62が電極群3を電池ケース2の中心位置H1から偏心した位置に固定するので、円筒形電池100を倒した状態において比重の大きい電極群3の中心位置H2が電池ケース2の中心位置H1よりも鉛直下側に位置することになり、電解液と電極群3との接触面積を大きくすることができる。これにより、電槽化成時における電極群3内部への電解液の浸透を容易にすることができる。
例えば、スペーサ形状は前記第4実施形態に限られず、図30に示すように、第2のスペーサ62が溶接孔62hを有さないものであっても良い。この場合には、負極板32の集電端子321は、スペーサ61、62を電池ケース2に配置する前に溶接するか、或いは、溶接することなく、第2のスペーサ62の下面により電池ケース2の底面2Bに押圧接触させることが考えられる。
Claims (22)
- 円筒状をなす電池ケースと、正極、負極及びセパレータを含む電極群とを有し、
前記電極群と前記電池ケースとの間に上下に連通した空間が形成され、
前記正極又は前記負極の一方の集電端子が、前記電極群に対して前記電池ケースの中心軸から離れる方向に延出しており、前記電池ケースの底面に接触している円筒形電池。 - 前記正極又は前記負極の一方が集電体に活物質を塗工して構成される電極板であって、
活物質が塗工されない直線状の未塗工部と、当該未塗工部を挟んで両側に形成され、活物質が塗工される塗工部とを有し、
前記両側の塗工部が向き合うように前記未塗工部で前記集電体が折り曲げられているとともに、前記未塗工部の一部を外側に折り曲げて集電端子が形成される請求項1記載の円筒形電池。 - 前記未塗工部の一部に切れ込みを形成し、その切れ込み内部を外側に折り曲げることにより前記集電端子が形成されている請求項2記載の円筒形電池。
- 前記未塗工部の一部が、前記塗工部及び前記未塗工部の境界又はこの境界よりも内側を折り曲げ線として、前記塗工部の一方よりも外側に折り曲げられる請求項2記載の円筒形電池。
- 折り曲げられて形成された集電端子と前記未塗工部とが略同一平面内に位置する請求項2記載の円筒形電池。
- 折り曲げられた前記両側の塗工部の少なくとも一方において、前記集電体の外側に塗工された活物質の厚みが、前記集電体の内側に塗工された活物質の厚みよりも小さい請求項2記載の円筒形電池。
- 折り曲げられた前記両側の塗工部の両方において、前記集電体の外側に塗工された活物質の塗工量が、前記集電体の内側に塗工された活物質の塗工量よりも少ない請求項6記載の円筒形電池。
- 前記集電端子が、電池ケースの底面に溶接されるものである請求項1記載の円筒形電池。
- 前記未塗工部が前記電池ケースの底面側に位置するように収容されている請求項2記載の円筒形電池。
- 前記集電端子が、前記電池ケースの底面及び内側周面に接触している請求項1記載の円筒形電池。
- 前記円筒形電池が、前記電極群を前記電池ケースの底面又は内側周面に溶接するための溶接棒が挿入される上下に連通した空間を備えるものである請求項1記載の円筒形電池。
- 前記円筒形電池が、前記電極群を前記電池ケースに固定するスペーサを有し、前記スペーサが、前記上下に連通した空間を形成するものである請求項1記載の円筒形電池。
- 前記スペーサが、前記電池ケースの内側周面と前記一対の外側面それぞれとの間に設けられた対をなすものであり、
前記対をなすスペーサが、前記電池ケースの中心軸方向から見て前記電極群に対して非対称形状である請求項12記載の円筒形電池。 - 前記電極群における正極又は負極の集電端子が1つであり、前記電池ケースの底面に溶接される前記集電端子の溶接箇所が1箇所である請求項13記載の円筒形電池。
- 前記各スペーサが、前記電極群に接触する接触面を一方面に有する平板状の電極接触部と、前記電極接触部の他方面から延出して前記電池ケースの内側周面に接触するケース接触部とを有し、
前記各スペーサにおけるケース接触部の電極接触部からの延出位置が、前記電極群に対して非対称位置とされている請求項13記載の円筒形電池。 - 前記ケース接触部の前記電極接触部からの延出位置が、前記電極接触面の幅方向中央から離れている請求項15記載の円筒形電池。
- 前記負極の集電端子が、前記電池ケースの底面に溶接されるものであり、
前記負極の集電端子が、前記電極群の側面及び前記電池ケースの内側周面の間に形成される空間において、前記ケース接触部により仕切られた空間において大きい空間内に位置している請求項15記載の円筒形電池。 - 前記各スペーサが、前記電極群に接触する接触面を一方面に有する平板状の電極接触部と、前記電極接触部の他方面から延出して前記電池ケースの内側周面に接触するケース接触部とを有し、
一方のスペーサのケース接触部の数と他方のスペーサのケース接触部の数とが互いに異なる請求項13記載の円筒形電池。 - スペーサが、前記電極群を前記電池ケースの中心位置から偏心した位置に固定するものである請求項1記載の円筒形電池。
- 前記スペーサが、前記電極群を挟むように設けられた一対のスペーサであり、
前記一対のスペーサが、前記電池ケースの中心軸方向から見て前記電極群に対して非対称形状である請求項19記載の円筒形電池。 - 前記各スペーサの前記中心軸方向に直交する断面積が互いに異なる請求項20記載の円筒形電池。
- 前記電極群の一方の電極の集電端子が前記電池ケースの底面に溶接されるものであり、
前記一対のスペーサのうち、前記中心軸方向に直交する断面積が大きいスペーサに前記集電端子を前記電池ケースに溶接するための溶接棒が挿入される溶接孔が形成されている請求項21記載の円筒形電池。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013524759A JP5979147B2 (ja) | 2011-07-20 | 2012-07-20 | 円筒形電池 |
EP12815013.3A EP2736098B1 (en) | 2011-07-20 | 2012-07-20 | Cylindrically shaped battery |
US14/233,501 US9722215B2 (en) | 2011-07-20 | 2012-07-20 | Cylindrical battery |
CN201280035069.7A CN103688389B (zh) | 2011-07-20 | 2012-07-20 | 圆筒形电池 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-158542 | 2011-07-20 | ||
JP2011158801 | 2011-07-20 | ||
JP2011158542 | 2011-07-20 | ||
JP2011-158801 | 2011-07-20 | ||
JP2011-172697 | 2011-08-08 | ||
JP2011172697 | 2011-08-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013012085A1 true WO2013012085A1 (ja) | 2013-01-24 |
Family
ID=47558258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2012/068522 WO2013012085A1 (ja) | 2011-07-20 | 2012-07-20 | 円筒形電池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9722215B2 (ja) |
EP (1) | EP2736098B1 (ja) |
JP (1) | JP5979147B2 (ja) |
CN (1) | CN103688389B (ja) |
WO (1) | WO2013012085A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015008092A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社Gsユアサ | 電池 |
JP2015008089A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社Gsユアサ | 電池 |
US9379363B2 (en) | 2011-07-20 | 2016-06-28 | Gs Yuasa International, Ltd. | Cylindrical battery |
US10243177B2 (en) | 2011-03-25 | 2019-03-26 | Gs Yuasa International Ltd. | Cylindrical battery and battery electrode structure |
US10468711B2 (en) | 2011-08-02 | 2019-11-05 | Gs Yuasa International Ltd. | Electrode plate, layered electrode group, and battery |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102345403B1 (ko) * | 2017-08-14 | 2021-12-29 | 주식회사 엘지에너지솔루션 | 가압용 마스크 및 가압용 마스크를 이용하여 탑 캡 어셈블리와 전극 탭을 결합시키는 방법 |
EP3748710A1 (en) * | 2019-06-04 | 2020-12-09 | Renata AG | Cell battery |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61202876U (ja) * | 1985-06-07 | 1986-12-19 | ||
JPH0547366A (ja) * | 1991-02-06 | 1993-02-26 | Sanyo Electric Co Ltd | 角形金属水素化物蓄電池 |
JPH0517919U (ja) * | 1991-08-19 | 1993-03-05 | 日本電池株式会社 | 角形蓄電池 |
JPH05299099A (ja) * | 1992-04-20 | 1993-11-12 | Matsushita Electric Ind Co Ltd | 渦巻電極を備えた電池の製造法 |
JP2000090903A (ja) * | 1998-09-14 | 2000-03-31 | Toshiba Battery Co Ltd | 二次電池 |
JP2001148238A (ja) * | 1999-11-19 | 2001-05-29 | Sony Corp | 2次電池 |
JP2007227137A (ja) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Ind Co Ltd | 密閉型蓄電池 |
JP2008159357A (ja) | 2006-12-22 | 2008-07-10 | Matsushita Electric Ind Co Ltd | 円筒形二次電池 |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2941022A (en) * | 1959-05-05 | 1960-06-14 | Hyman J Mandel | Hermetically sealed nickel-cadmium storage battery |
JPS5991675A (ja) | 1982-11-16 | 1984-05-26 | Matsushita Electric Ind Co Ltd | 小形密閉鉛蓄電池 |
JPS61202876A (ja) | 1985-03-07 | 1986-09-08 | Canon Inc | 記録装置 |
JPH0650334B2 (ja) | 1985-09-18 | 1994-06-29 | 株式会社戸上電機製作所 | 故障区間検出装置用制御器の自己診断装置 |
JPH0517919A (ja) | 1991-07-12 | 1993-01-26 | Randesu Kk | プレキヤストコンクリート板 |
JP3454274B2 (ja) | 1992-02-28 | 2003-10-06 | 株式会社ユアサコーポレーション | アルカリ蓄電池用ニッケル電極とこれを用いたアルカリ蓄電池 |
JP3381070B2 (ja) | 1992-03-31 | 2003-02-24 | ソニー株式会社 | 積層電池の製造方法 |
SE9400946L (sv) * | 1994-03-22 | 1995-10-09 | Erik Sundberg | Blybatterier med elektroder under tryck med konstant yta |
US6117583A (en) * | 1994-03-22 | 2000-09-12 | Advanced Power Devices, Inc. | Lead battery |
JP3261688B2 (ja) * | 1994-08-23 | 2002-03-04 | キヤノン株式会社 | 二次電池及びその製造方法 |
JPH08293298A (ja) | 1995-04-21 | 1996-11-05 | Fujitsu Ltd | 2次電池用スペーサー及び2次電池 |
JP3324372B2 (ja) | 1995-12-06 | 2002-09-17 | 松下電器産業株式会社 | 円筒型電池 |
JP3815511B2 (ja) | 1996-01-18 | 2006-08-30 | 株式会社ジーエス・ユアサコーポレーション | ニッケル・金属水素化物密閉形アルカリ蓄電池 |
JPH10125335A (ja) | 1996-10-16 | 1998-05-15 | Matsushita Electric Ind Co Ltd | 渦巻状電極を備えた電池およびその製造方法 |
TW369734B (en) * | 1997-03-12 | 1999-09-11 | Sanyo Electric Co | Cubical battery |
JPH11219720A (ja) | 1998-02-03 | 1999-08-10 | Shin Kobe Electric Mach Co Ltd | 電池及びリチウムイオン電池 |
JP4630857B2 (ja) | 1998-03-31 | 2011-02-09 | キヤノン株式会社 | 二次電池の製造方法 |
JPH11345629A (ja) | 1998-03-31 | 1999-12-14 | Canon Inc | 二次電池及びその製造方法 |
JP4284719B2 (ja) | 1998-09-01 | 2009-06-24 | パナソニック株式会社 | 渦巻電極を備えた電池及びその製造法 |
JP2000340210A (ja) | 1999-05-25 | 2000-12-08 | Sanyo Electric Co Ltd | 電気エネルギー蓄積デバイス |
JP2002134096A (ja) | 2000-10-30 | 2002-05-10 | Matsushita Electric Ind Co Ltd | コイン形電池 |
JP2002298921A (ja) | 2001-03-28 | 2002-10-11 | Sanyo Electric Co Ltd | 二次電池 |
US7097673B2 (en) * | 2001-06-07 | 2006-08-29 | 3M Innovative Properties Company | Coating edge control |
JP4233243B2 (ja) * | 2001-08-30 | 2009-03-04 | 三洋電機株式会社 | 密閉型電池 |
CN100334769C (zh) | 2004-05-28 | 2007-08-29 | 日本无公害电池研究所 | 二次电池 |
JP2006012801A (ja) | 2004-05-28 | 2006-01-12 | M & G Eco Battery Institute Co Ltd | 二次電池 |
CN2872606Y (zh) * | 2005-12-01 | 2007-02-21 | 深圳市比克电池有限公司 | 卷绕式锂离子电池单元和包括其的锂离子电池 |
JP5319943B2 (ja) | 2008-03-19 | 2013-10-16 | 株式会社オハラ | 電池 |
EP2690697B1 (en) | 2011-03-25 | 2018-05-09 | GS Yuasa International Ltd. | Cylindrical battery and electrode structure for battery |
WO2013012084A1 (ja) | 2011-07-20 | 2013-01-24 | 株式会社Gsユアサ | 円筒形電池 |
-
2012
- 2012-07-20 CN CN201280035069.7A patent/CN103688389B/zh active Active
- 2012-07-20 EP EP12815013.3A patent/EP2736098B1/en active Active
- 2012-07-20 WO PCT/JP2012/068522 patent/WO2013012085A1/ja active Application Filing
- 2012-07-20 US US14/233,501 patent/US9722215B2/en active Active
- 2012-07-20 JP JP2013524759A patent/JP5979147B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61202876U (ja) * | 1985-06-07 | 1986-12-19 | ||
JPH0547366A (ja) * | 1991-02-06 | 1993-02-26 | Sanyo Electric Co Ltd | 角形金属水素化物蓄電池 |
JPH0517919U (ja) * | 1991-08-19 | 1993-03-05 | 日本電池株式会社 | 角形蓄電池 |
JPH05299099A (ja) * | 1992-04-20 | 1993-11-12 | Matsushita Electric Ind Co Ltd | 渦巻電極を備えた電池の製造法 |
JP2000090903A (ja) * | 1998-09-14 | 2000-03-31 | Toshiba Battery Co Ltd | 二次電池 |
JP2001148238A (ja) * | 1999-11-19 | 2001-05-29 | Sony Corp | 2次電池 |
JP2007227137A (ja) * | 2006-02-23 | 2007-09-06 | Matsushita Electric Ind Co Ltd | 密閉型蓄電池 |
JP2008159357A (ja) | 2006-12-22 | 2008-07-10 | Matsushita Electric Ind Co Ltd | 円筒形二次電池 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2736098A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10243177B2 (en) | 2011-03-25 | 2019-03-26 | Gs Yuasa International Ltd. | Cylindrical battery and battery electrode structure |
US9379363B2 (en) | 2011-07-20 | 2016-06-28 | Gs Yuasa International, Ltd. | Cylindrical battery |
US10468711B2 (en) | 2011-08-02 | 2019-11-05 | Gs Yuasa International Ltd. | Electrode plate, layered electrode group, and battery |
JP2015008092A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社Gsユアサ | 電池 |
JP2015008089A (ja) * | 2013-06-25 | 2015-01-15 | 株式会社Gsユアサ | 電池 |
Also Published As
Publication number | Publication date |
---|---|
EP2736098B1 (en) | 2019-01-09 |
CN103688389B (zh) | 2016-09-28 |
CN103688389A (zh) | 2014-03-26 |
US20140193700A1 (en) | 2014-07-10 |
US9722215B2 (en) | 2017-08-01 |
EP2736098A4 (en) | 2015-10-28 |
EP2736098A1 (en) | 2014-05-28 |
JP5979147B2 (ja) | 2016-08-24 |
JPWO2013012085A1 (ja) | 2015-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5979147B2 (ja) | 円筒形電池 | |
JP5915654B2 (ja) | 円筒形電池 | |
JP5190489B2 (ja) | バッテリーパック及びその製造方法 | |
KR100599749B1 (ko) | 이차 전지와 이에 사용되는 전극 조립체 | |
JP5812094B2 (ja) | 電極板、積層型電極群及び電池 | |
US20140349158A1 (en) | Cylindrical battery | |
KR20110135925A (ko) | 전기화학적 에너지 저장 셀 | |
KR20110082908A (ko) | 2개 이상의 음극 탭들을 포함하는 원통형 이차전지 | |
KR20050106539A (ko) | 이차 전지와 이에 사용되는 전극 조립체 및 집전판 | |
CN103887479B (zh) | 电极板、层叠型电极组、电池及圆筒形电池 | |
KR101321260B1 (ko) | 전지의 제조 방법 | |
JP2019160544A (ja) | 蓄電素子 | |
JP2019061892A (ja) | 蓄電素子 | |
JP6142521B2 (ja) | 円筒形電池 | |
JP6086207B2 (ja) | 電極板、積層型電極群、電池及び円筒形電池 | |
KR20000076959A (ko) | 사각형 배터리 | |
JP4977932B2 (ja) | リチウムイオン二次電池およびその製造方法 | |
JP5979441B2 (ja) | 電極板、積層型電極群、電池及び円筒形電池 | |
JP2002170544A (ja) | 電 池 | |
JP2019029116A (ja) | 蓄電素子 | |
JPH0447665A (ja) | 角形電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12815013 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013524759 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14233501 Country of ref document: US Ref document number: 2012815013 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |