WO2010058501A1 - アルカリ電池 - Google Patents

アルカリ電池 Download PDF

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Publication number
WO2010058501A1
WO2010058501A1 PCT/JP2009/004257 JP2009004257W WO2010058501A1 WO 2010058501 A1 WO2010058501 A1 WO 2010058501A1 JP 2009004257 W JP2009004257 W JP 2009004257W WO 2010058501 A1 WO2010058501 A1 WO 2010058501A1
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WO
WIPO (PCT)
Prior art keywords
negative electrode
positive electrode
battery
height
range
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PCT/JP2009/004257
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English (en)
French (fr)
Japanese (ja)
Inventor
加藤丞
Original Assignee
パナソニック株式会社
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Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to US12/671,384 priority Critical patent/US8187741B2/en
Priority to EP09827283.4A priority patent/EP2348565B1/de
Publication of WO2010058501A1 publication Critical patent/WO2010058501A1/ja

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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
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/04—Cells with aqueous electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/06—Electrodes for primary cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/244—Zinc electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/42—Alloys based on zinc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • 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
    • H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
    • 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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/023—Gel electrode
    • 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
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/04—Cells with aqueous electrolyte
    • H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
    • H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes
    • 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

Definitions

  • the present invention relates to an alkaline battery with reduced packing density of the positive electrode and the negative electrode.
  • Alkaline batteries have a high energy density per unit weight, and are therefore widely used as power sources with the rapid spread of portable electronic devices in recent years. And today, from regular type batteries suitable for devices such as portable game machines and excellent discharge characteristics at light loads, excellent discharge characteristics under heavy loads suitable for devices such as digital cameras. A lineup of high-performance batteries, as well as high-quality and high-performance batteries with high discharge performance in a wide range from large current to small current, in various grades with different price ranges according to the equipment used and application. Has been.
  • an alkaline battery has a structure in which a positive electrode and a negative electrode are housed in a battery case via a separator, but simply reducing the amount of the positive electrode and / or the negative electrode decreases the facing area between the positive electrode and the negative electrode. The reaction efficiency also decreases.
  • the inventor of the present application produced an alkaline battery with a reduced packing density of the positive electrode and the negative electrode, and evaluated its performance.
  • a material containing graphite in manganese dioxide was used for the positive electrode, and a material containing a gelling agent in zinc was used for the negative electrode.
  • the gelled negative electrode originally has fluidity, and when an impact is applied to the battery, the gelled negative electrode moves to the negative electrode terminal side (gasket side) and collides with the gasket. It is considered that the internal short circuit occurred due to leakage from the gasket to the positive electrode side (hereinafter simply referred to as “gel spill”).
  • gel spill the internal short circuit occurred due to leakage from the gasket to the positive electrode side
  • the gelled negative electrode having a reduced density is more likely to move in response to an impact, and it is considered that the rate of generation of batteries that generate heat due to an internal short circuit is increased.
  • the present invention has been made in view of the above points, and its main purpose is to reduce the packing density of the positive electrode and the negative electrode without causing an internal short circuit due to gel spillage, excellent reliability, and high cost performance.
  • the object is to provide an alkaline battery.
  • the alkaline battery according to the present invention is an alkaline battery in which a positive electrode and a negative electrode with reduced packing density are accommodated in a battery case via a separator, and the ratio of the height of the positive electrode to the height of the negative electrode. Is adopted in the range of 0.96 to 1.06.
  • the alkaline battery according to the present invention is an alkaline battery in which a positive electrode and a negative electrode are housed in a battery case via a separator, the positive electrode includes manganese dioxide which is a positive electrode active material, and the negative electrode is a negative electrode active material.
  • the packing density of manganese dioxide in the positive electrode is in the range of 2.31 to 2.45 g / cm 3
  • the packing density of zinc in the negative electrode is 1.49 to in the range of 1.65 g / cm 3
  • the ratio of the positive electrode height (h 1) and the negative pole of a height (h 2) (h 1 / h 2) is in the range of 0.96 to 1.06 It is characterized by that.
  • the positive electrode height (h 1) the ratio of the negative electrode of the height (h 2) (h 1 / h 2) is in the range of 0.98 to 1.04.
  • the arithmetic mean roughness (Ra) of the inner wall surface of the battery case is in the range of 0.7 to 2.0 ⁇ m.
  • the zinc is made of zinc powder, and zinc powder having a particle size of 200 mesh or less is contained in the range of 15 to 40 wt%.
  • the separator has a thickness in the range of 350 to 550 ⁇ m.
  • the present invention even if the packing density of the positive electrode and the negative electrode is reduced, it is possible to obtain an alkaline battery with excellent reliability and high cost performance that does not cause an internal short circuit due to gel spillage.
  • (A) is the figure which showed the structure of the battery
  • (b) the figure which showed the state after dropping a battery
  • (c) is the X-ray photograph of (a)
  • (d) is X of (b). It is a line photograph.
  • 1 is a half cross-sectional view showing a configuration of an alkaline battery in an embodiment of the present invention.
  • an alkaline battery has a structure in which a positive electrode and a negative electrode are housed in a battery case via a separator.
  • the height of the positive electrode housed in the battery case is It is designed so that the opposing area is maximized by aligning the height of the negative electrode.
  • Table 1 shows the evaluation results when a drop test is performed on a battery in which the height (h 1 ) of the positive electrode and the height (h 2 ) of the negative electrode are not uniform.
  • the variation in the height of the positive electrode and the negative electrode is typically considered to be about 2 to 4%.
  • the height of the positive electrode Batteries with different (h 1 ) and negative electrode height (h 2 ) were prepared and evaluated.
  • the produced battery was an AA alkaline battery, and a material containing manganese dioxide in graphite was used for the positive electrode, and a material containing a gelling agent in zinc was used for the negative electrode.
  • the packing density of manganese dioxide in the positive electrode was set to 2.38 g / cm 3
  • the packing density of zinc in the negative electrode was set to 1.57 g / cm 3 .
  • these set packing densities are about 5% with respect to the packing density (typically about 2.50 g / cm 3 ) of manganese dioxide set in a high-grade battery aiming at high performance. This corresponds to a value obtained by reducing the density, and corresponds to a value obtained by reducing the density by about 9% with respect to the packing density of zinc (typically about 1.72 g / cm 3 ).
  • the drop test method and the evaluation method are as follows.
  • the battery was continuously applied 10 times on the P tile from the height of 1.5 m with the negative terminal side down. Then, the closed circuit voltage (V 2 ) immediately after the drop test and the closed circuit voltage (V 3 ) after 1 minute were measured, and the maximum temperature (T) on the battery surface after the drop test was measured. Then, a drop test was performed for each of the batteries 1 to 4 shown in Table 1 by 10 pieces. A battery in which V 2 was lowered by 2 mV or more with respect to V 1 was obtained, and a battery in which V 3 was lowered with respect to V 2 was further obtained. B. Further, the battery in which T increased to 40 ° C. or higher was evaluated as C, and the number of batteries that resulted in each evaluation was counted.
  • the battery of evaluation A has a suspicion that gel spillage has occurred
  • the battery of evaluation B has a progressive internal short circuit caused by gel spillage
  • the battery of evaluation C has the result of gel spillage It is assumed that the degree of progress of the internal short circuit is high and the heat has been generated.
  • FIG. 1A is a diagram showing a configuration of a battery in which the positive electrode 2 and the negative electrode 3 having a reduced density are accommodated in a battery case via a separator 4.
  • the space between the positive electrode 2 and the negative electrode 3 and the gasket 5 is shown in FIG. A is formed (FIG. 1 (c) shows an X-ray photograph thereof).
  • FIG. 1B shows the state of the battery after the battery is dropped with the negative electrode terminal side down, and not only the negative electrode 3 but also the positive electrode 2 moves to the negative electrode terminal side and moves to the gasket 5. It can be seen that a space B is formed on the positive electrode terminal side (FIG. 1 (d) shows an X-ray photograph thereof).
  • the positive electrode absorbs the electrolytic solution and expands in the radial direction of the battery case, so that the positive electrode is in close contact with the battery case and moves even when an impact is applied to the battery.
  • the positive electrode moved simultaneously when an impact was applied to the battery due to the lowering of the density of the positive electrode resulting in a decrease in adhesion to the battery case.
  • the reason why the battery 4 shown in Table 1 did not generate heat unlike the battery 3 although the height of the negative electrode was low can be considered as follows. That is, in the battery 4, since the height of the positive electrode is low, the length of contact with the gasket at the front end of the separator is increased by the movement of the separator following the movement of the positive electrode. Therefore, even if the negative electrode moves and strongly collides with the gasket, it is considered that the occurrence of gel spillage is suppressed by the separator whose adhesion to the gasket is improved by increasing the contact length.
  • the reason why the battery 2 shown in Table 1 has generated heat despite the high negative electrode height can be considered as follows. That is, in battery 2, since the height of the positive electrode is lower than the height of the negative electrode, after the negative electrode first contacts the gasket, the positive electrode delays and contacts the gasket. Therefore, when the separator is pressed against the moving positive electrode, the adhesion between the separator and the gasket is lowered, and as a result, gel spillage is considered to have occurred.
  • the present invention provides a guideline for the allowable range of the ratio between the height of the positive electrode and the height of the negative electrode.
  • FIG. 2 is a half cross-sectional view showing the configuration of the alkaline battery in the embodiment of the present invention.
  • a positive electrode 2 and a gelled negative electrode 3 are accommodated in a bottomed cylindrical battery case 1 via a separator 4, and an opening of the battery case 1 has a gasket 5, a negative electrode current collector 6, And the negative electrode terminal plate 7 are sealed by a sealing unit 9.
  • the positive electrode 2 includes manganese dioxide as a positive electrode active material
  • the negative electrode 3 includes a gelled negative electrode including zinc (including a zinc alloy) as a negative electrode active material.
  • the positive electrode 2 and the negative electrode 3 are comprised by the electrode reduced in density.
  • Table 2 shows that the packing density of manganese dioxide in the positive electrode 2 is lowered in the range of 2.31 to 2.45 g / cm 3 , and the packing density of zinc in the negative electrode 3 is 1.49 to 1. using a low density and electrodes in the range of 65 g / cm 3, respectively, the height of the positive electrode 2 (h 1) and height of the negative electrode 3 (h 2) 0.94 the ratio (h 1 / h 2) of ⁇
  • the evaluation result when it carries out by the same method as the drop test shown in Table 1 about the AA alkaline battery produced by changing to the range of 1.08 is shown.
  • the packing density of manganese dioxide in the positive electrode 2 is in the range of 2.31 to 2.45 g / cm 3
  • the packing density of zinc in the negative electrode 3 is in the range of 1.49 to 1.65 g / cm 3 .
  • the height of the positive electrode (h 1 ) and the height of the negative electrode (the ratio of h 2) (h 1 / h 2) it can be seen that it is more preferable in the range of 0.98 to 1.04.
  • the preferred range of the ratio (h 1 / h 2 ) between the height (h 1 ) of the positive electrode and the height (h 2 ) of the negative electrode described above includes manufacturing variations.
  • the preferable range can be defined as a design allowable range in consideration of the manufacturing variation.
  • the packing density of manganese dioxide in the present invention refers to the weight ratio of manganese dioxide contained in the electrolytic manganese dioxide constituting the positive electrode 2 with respect to the volume of the positive electrode 2. Further, the “packing density of manganese dioxide” can be measured, for example, by the following method.
  • the volume of the positive electrode 2 is calculated by measuring the outer diameter, inner diameter, and height of the positive electrode 2 through X-ray fluoroscopy. Then, after disassembling the battery and taking out all of the positive electrode 2 and sufficiently dissolving it with acid, manganese in the aqueous solution is obtained by ICP emission analysis (high frequency inductively coupled plasma emission spectroscopy) from an aqueous solution obtained by filtering out the insoluble matter. The content of (Mn) is examined, and the content is converted into the amount of manganese dioxide to determine the weight of manganese dioxide contained in the positive electrode 2. In this way, “the packing density of manganese dioxide” is preferably obtained.
  • the “zinc packing density” in the present invention refers to the weight ratio of zinc constituting the negative electrode 3 to the volume of the negative electrode 3.
  • the “zinc packing density” can be measured, for example, by the following method.
  • the volume of the negative electrode 3 is calculated by measuring the outer diameter and height of the negative electrode 3 through X-ray fluoroscopy of the battery. Then, the battery is disassembled and all the negative electrode 3 is taken out. After removing the water-soluble substance and the gelling agent by decantation using water as a solvent, zinc is taken out by sufficiently drying and the weight thereof is obtained. In this way, the “zinc packing density” may be obtained.
  • Table 3 using the positive and negative electrodes is not low density (filling density of manganese dioxide 2.50 g / cm 3, the packing density of the zinc 1.72 g / cm 3), the positive electrode height (h 1) a negative electrode of the height ratio (h 2) (h 1 / h 2), the battery prepared by changing the range of 0.90 to 1.10, when a drop test was carried out in the same manner as Table 2 The evaluation results are shown.
  • the positive electrode By the way, as described above, by reducing the density of the positive electrode, the positive electrode also easily moves when an impact is applied to the battery. By improving the adhesion between the positive electrode and the battery case, the positive electrode The effect of suppressing the movement of can be expected.
  • Table 4 shows the evaluation when the drop test was performed in the same manner as in Table 2 on the battery produced by changing the arithmetic average roughness (Ra) of the inner wall surface of the battery case 1 in the range of 0.5 to 3.0 ⁇ m. The results are shown. As shown in Table 4, it can be seen that as the arithmetic average roughness (Ra) of the inner wall surface of the battery case 1 increases, the occurrence of internal short-circuits (evaluations A and B) due to gel spillage is reduced. This is presumably because the adhesion between the positive electrode and the battery case was improved by increasing the surface roughness of the inner wall surface of the battery case 1.
  • the arithmetic average roughness (Ra) of the inner wall surface of the battery case 1 is in the range of 0.7 to 2.0 ⁇ m. It is preferable to set to.
  • the battery shown in Table 4 used an electrode having a packing density of manganese dioxide in the positive electrode 2 of 2.31 g / cm 3 and a packing density of zinc in the negative electrode 3 of 1.49 g / cm 3 .
  • the zinc network can be enhanced, and the effect of suppressing the movement of the negative electrode can be expected.
  • Table 5 shows a drop test using the same method as in Table 2 for batteries manufactured by changing the content of zinc powder having a particle size of 200 mesh or less (hereinafter referred to as “zinc fine powder”) in the range of 10 to 40 wt%. The evaluation result when performing is shown. As shown in Table 5, it can be seen that the occurrence of internal short circuits (evaluations A and B) due to gel spillage is reduced as the content of the zinc fine powder increases.
  • the content of the fine zinc powder exceeds 40 wt%, the viscosity of the negative electrode is increased and the productivity may be reduced. Therefore, in order to effectively reduce the occurrence of internal short circuit due to gel spillage.
  • the battery shown in Table 5 used an electrode having a packing density of manganese dioxide in the positive electrode 2 of 2.31 g / cm 3 and a packing density of zinc in the negative electrode 3 of 1.49 g / cm 3 .
  • the separator 4 has a function of preventing the gelled negative electrode 3 from leaking to the positive electrode 2 by bringing the tip portion into contact with the gasket, but by increasing the thickness of the separator 4, The function can be further strengthened, and as a result, an effect of suppressing a decrease in adhesion between the separator 4 and the gasket 5 accompanying the movement of the positive electrode can be expected.
  • Table 6 shows the evaluation results when a drop test is performed in the same manner as in Table 2 on the battery manufactured by changing the thickness of the separator 4 in the range of 315 to 650 ⁇ m.
  • the thickness of the separator 4 is a thickness obtained by winding a nonwoven fabric mainly composed of polyvinyl alcohol fibers and rayon fibers each having a thickness of 100 to 210 ⁇ m in a cylindrical shape. As shown in Table 6, it can be seen that the occurrence of internal short circuits (evaluations A and B) due to gel spillage is reduced as the thickness of the separator 4 increases.
  • the thickness of the separator 4 exceeds 550 ⁇ m, the volume of the positive electrode 2 and the negative electrode 3 is reduced.
  • the thickness of the separator 4 is preferably set in the range of 350 to 550 ⁇ m.
  • the battery shown in Table 6 used an electrode in which the packing density of manganese dioxide in the positive electrode 2 was 2.31 g / cm 3 and the packing density of zinc in the negative electrode 3 was 1.49 g / cm 3 .
  • the arithmetic average roughness (Ra) of the inner wall surface of the battery case 1, the content of zinc powder having a particle size of 200 mesh or less, and the thickness of the separator 4 are appropriately set to values within a range where the above-described effects can be exhibited. By combining them, the occurrence of internal short circuit due to gel spillage can be reduced more effectively.
  • the alkaline battery of the present invention has excellent productivity and high cost performance, and can be used for a wide range of electronic devices using a dry battery as a power source.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Primary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Cell Separators (AREA)
PCT/JP2009/004257 2008-11-18 2009-08-31 アルカリ電池 WO2010058501A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/671,384 US8187741B2 (en) 2008-11-18 2009-08-31 Alkaline battery
EP09827283.4A EP2348565B1 (de) 2008-11-18 2009-08-31 Alkalibatterie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-294265 2008-11-18
JP2008294265A JP5416948B2 (ja) 2008-11-18 2008-11-18 アルカリ電池

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WO2010058501A1 true WO2010058501A1 (ja) 2010-05-27

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EP (1) EP2348565B1 (de)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US8728652B2 (en) 2010-10-13 2014-05-20 Panasonic Corporation Cylindrical alkaline battery having specific electrode packing densities and electrode thickness
EP2479824A4 (de) * 2010-10-13 2017-01-25 Panasonic Intellectual Property Management Co., Ltd. Zylinderförmige alkalische batterie

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JP2011248768A (ja) 2010-05-28 2011-12-08 Sony Corp 情報処理装置、情報処理システム及びプログラム
US20130065112A1 (en) * 2011-04-18 2013-03-14 Panasonic Corporation Alkaline primary battery
JP5022526B1 (ja) * 2011-04-18 2012-09-12 パナソニック株式会社 アルカリ一次電池

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US8187741B2 (en) 2012-05-29
US20110020691A1 (en) 2011-01-27
EP2348565B1 (de) 2013-11-27
EP2348565A1 (de) 2011-07-27
JP2010123319A (ja) 2010-06-03
JP5416948B2 (ja) 2014-02-12

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