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    • 2. 发明专利
    • Battery deterioration prediction method, battery deterioration prediction device, and program
    • 电池检测预测方法,电池检测预测装置及程序
    • JP2014126447A
    • 2014-07-07
    • JP2012283194
    • 2012-12-26
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所Toyota Motor Corpトヨタ自動車株式会社
    • ITO YUICHINAKANO HIROYUKIAMANO JUNKO
    • G01R31/36H01M10/48H02J7/00
    • PROBLEM TO BE SOLVED: To predict deterioration of a secondary battery which is sometimes used at a high rate.SOLUTION: A battery deterioration prediction method comprises the steps of: acquiring an S value by calculating a relational expression S=∫(V-V0)dT using voltage V and time T which are acquired when a prediction target secondary battery that operates by predetermined principle, and discharged at a predetermined high rate is performed until a lower limit voltage V0 (step S100); obtaining in advance a correlation between S values and battery deterioration by using a plurality of secondary batteries which operate by the predetermined principle and have different S values; predicting battery deterioration of the prediction target secondary battery by applying the correlation to the S value of the prediction target secondary battery (step S110); and displaying a prediction result of battery deterioration (step S120).
    • 要解决的问题:用于预测有时以高速率使用的二次电池的劣化。解决方案:电池劣化预测方法包括以下步骤:通过计算关系式S =∫(V-V0)来获取S值, dT使用当预定原理操作并以预定高速率放电的预测目标二次电池执行直到下限电压V0时获得的电压V和时间T(步骤S100); 通过使用以预定原理操作且具有不同S值的多个二次电池,提前获得S值与电池劣化之间的相关性; 通过对预测对象二次电池的S值施加相关性来预测预测对象二次电池的电池劣化(步骤S110)。 并显示电池劣化的预测结果(步骤S120)。
    • 3. 发明专利
    • Anode for aqueous solution type lithium secondary battery and aqueous solution type lithium secondary battery
    • 水溶液型锂离子二次电池和水溶液型锂电池二次电池阳极
    • JP2011192542A
    • 2011-09-29
    • JP2010058062
    • 2010-03-15
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • HIRUTA OSAMUKONDO HIRONORINAKANO HIROYUKIINOUE TAKAO
    • H01M4/02H01M4/58H01M4/62H01M10/36
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To further improve output characteristics of an aqueous solution type lithium secondary battery.
      SOLUTION: The aqueous solution type lithium secondary battery 20 includes a cathode 22 with a cathode active material, and an anode 23 arranged in a countering position to the cathode 22 with a separator in between. In a space around the cathode 22 and the anode 23 of the aqueous solution type lithium secondary battery 20, aqueous solution type electrolyte 27 with dissolved lithium is filled. Also, the anode 23 is provided with an anode active material which consists of a complex compound containing titanium and phosphorus; a conductive material which is contained in the anode 23 in a range of 15 parts by weight or more and 40 parts by weight or less to 100 parts by weight of the anode active material, and consisting of a carbon material; a binding material with water-soluble and/or water dispersion properties; and a collector with which the anode active material, the conductive material, and the binding material are formed. The binding material is desirably of butadiene copolymer which has a water dispersion property, and the conductive material is desirably a carbon black-based carbon material which has a hydrophobic property.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了进一步提高水溶液型锂二次电池的输出特性。 解决方案:水溶液型锂二次电池20包括具有阴极活性材料的阴极22和阳极23,阳极23以与之隔绝的阴极22排列成与阴极22相对的位置。 在水溶液型锂二次电池20的阴极22和阳极23周围的空间中填充有溶解锂的水溶液型电解质27。 此外,阳极23设置有由包含钛和磷的络合物组成的负极活性材料; 包含在阳极23中的导电材料在15重量份以上且40重量份以下至100重量份的负极活性物质的范围内,由碳材料构成; 具有水溶性和/或水分散性的粘结材料; 以及形成负极活性物质,导电材料和粘合材料的收集器。 粘结材料理想地是具有水分散性的丁二烯共聚物,并且导电材料理想地是具有疏水性的炭黑基碳材料。 版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Method of using lithium secondary battery
    • 锂二次电池的使用方法
    • JP2011119072A
    • 2011-06-16
    • JP2009273743
    • 2009-12-01
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • OGIWARA NOBUHIROSASAKI GENHIRUTA OSAMUMIZUTANI MAMORUNAKANO HIROYUKISAWADA HIROSHI
    • H01M10/44H01M4/36H01M4/58H01M4/587H01M4/62H01M10/0525
    • Y02E60/122Y02T10/7011
    • PROBLEM TO BE SOLVED: To provide a method of using a lithium secondary battery which is improved in low temperature characteristics of the lithium secondary battery with an iron lithium phosphate compound in a positive electrode and graphite in a negative electrode. SOLUTION: The lithium secondary battery 10 includes a positive electrode sheet 13 formed by forming a positive electrode active material 12 on a collector 11, a negative electrode sheet 18 with a negative electrode active material 17 formed on a surface of a collector 14, and nonaqueous electrolyte liquid 20 filling a gap between the positive electrode sheet 13 and the negative electrode sheet 18. In the lithium secondary battery, an iron lithium phosphate compound is included in the positive electrode active material 12, and graphite and amorphous carbon (for example, graphitized carbon) are included in the negative electrode active material 17. A ratio of amorphous carbon to a total weight of amorphous carbon and graphite is in a range of 20 to 50 wt.%. The lithium secondary battery 10 is used in a predetermined low temperature range so that a usage capacity to a reference capacity which is a battery capacity at 20°C is 70% or more. COPYRIGHT: (C)2011,JPO&INPIT
    • 解决的问题:提供一种使用在正极中的磷酸铁锂化合物和负极中的石墨来改善锂二次电池的低温特性的锂二次电池的方法。 解决方案:锂二次电池10包括通过在集电体11上形成正极活性物质12而形成的正极片13,在集电体14的表面上形成负极活性物质17的负极片18 以及填充正极片13和负极片18之间的间隙的非水电解质液20.在锂二次电池中,正极活性物质12中包含磷酸铁锂化合物,石墨和无定形碳(用于 例如,石墨化碳)包括在负极活性物质17中。无定形碳与无定形碳和石墨的总重量的比例在20至50重量%的范围内。 锂二次电池10在预定的低温范围内使用,使得作为20℃下的电池容量的参考电容的使用容量为70%以上。 版权所有(C)2011,JPO&INPIT
    • 5. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2011071017A
    • 2011-04-07
    • JP2009222418
    • 2009-09-28
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • OGIWARA NOBUHIROSAWADA HIROSHISASAKI GENHIRUTA OSAMUMIZUTANI MAMORUNAKANO HIROYUKIITO YUICHI
    • H01M10/052H01M4/36H01M4/58H01M4/587
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To achieve both high energy density and high durability against high temperature when a positive electrode active material containing an iron lithium phosphate compound is used. SOLUTION: A lithium secondary battery 10 includes: a positive electrode sheet 13 in which a positive electrode active material 12 is formed in a current collector 11; a negative electrode sheet 18 in which a negative electrode active material 17 is formed on a surface of the current collector 14; and a nonaqueous electrolytic solution 20 to fill between the positive electrode sheet 13 and the negative electrode sheet 18. As for this lithium secondary battery, the iron lithium phosphate compound is contained in the positive electrode active material 12, and in the negative electrode active material 17, amorphous carbon (for example, easily-graphitizable carbon) is contained within a range of 20 wt.% or more and 40 wt.% or less, and graphite is contained within a range of 80 wt.% or less and 60 wt.% or more. The specific surface area A of the negative electrode active material 17 is formed by 2.38 m 2 /g or more and 3.40 m 2 /g or less. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:当使用含有磷酸铁锂化合物的正极活性物质时,为了实现高能量密度和高温耐高温性。 解决方案:锂二次电池10包括:在集电体11中形成有正极活性物质12的正极片13; 在集电体14的表面上形成负极活性物质17的负极片18, 以及填充在正极片13和负极片18之间的非水电解液20.作为该锂二次电池,在正极活性物质12中含有磷酸铁锂化合物,在负极活性物质 如图17所示,无定形碳(例如易石墨化碳)在20重量%以上且40重量%以下的范围内,石墨的含量为80重量%以下,60重量% 。% 或者更多。 负极活性物质17的比表面积A由2.38m 2 / SP / g以上至3.40m 2 / SP / g以下形成。 版权所有(C)2011,JPO&INPIT
    • 6. 发明专利
    • Aqueous lithium secondary battery
    • 水性锂二次电池
    • JP2010108676A
    • 2010-05-13
    • JP2008277878
    • 2008-10-29
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • NAKANO HIROYUKIKONDO HIRONORI
    • H01M10/36H01M4/485H01M4/505H01M4/525H01M4/58
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide an aqueous lithium secondary battery for further improving battery capacity and a charge-discharge cycle characteristic.
      SOLUTION: A coin type battery 20 is constituted as the aqueous lithium secondary battery having a positive electrode 22 having a positive electrode active material and arranged in a lower part of this battery case 21, a negative electrode 23 having a negative electrode active material and arranged in a position opposed via a separator 24 to the positive electrode 22, and an aqueous electrolyte 28 including an electrolyte. Here, the positive electrode 22 has lithium-transition metal-silicon composite oxide (here, the transition metal is at least one or more among Fe, Co, Ni and Mn, for example, Li
      2 MnSiO
      4 ) as the positive electrode active material. The negative electrode 23 has one or more selected from LiTi
      2 (PO
      4 )
      3 , TiP
      2 O
      7 and LiV
      2 O
      4 as the negative electrode active material. Lithium nitrate is contained in the aqueous electrolyte as the electrolyte.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于进一步提高电池容量和充放电循环特性的锂二次电池水溶液。 解决方案:硬币型电池20构成为具有正极22的水性锂二次电池,该正极22具有正极活性物质并配置在该电池壳体21的下部,具有负极活性物质的负极23 并且配置在通过隔板24相对于正电极22的位置,以及包含电解质的水性电解质28。 这里,正极22具有锂 - 过渡金属 - 硅复合氧化物(这里,过渡金属为Fe,Co,Ni,Mn中的至少一种以上,例如Li SB 2 MnSiO, SB> 4 )作为正极活性物质。 负极23具有一种或多种选自LiTi SB 3,PO 3,SB 3,SB 3, SB> 7 和作为负极活性物质的LiV 2 O 4 。 硝酸锂作为电解质包含在水性电解质中。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2012216500A
    • 2012-11-08
    • JP2012023146
    • 2012-02-06
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • INOUE TAKAONAKANO HIROYUKI
    • H01M4/131H01M4/62
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To improve output characteristics and cycle durability.SOLUTION: A lithium secondary battery 10 comprises a positive electrode sheet 13 in which a positive electrode mixture layer 12 containing a positive electrode active material is formed on a collector 11. The positive electrode mixture layer 12 contains the positive electrode active material containing a lithium-containing oxide, and a carbon material, has a density of 2.0 g/cmor higher, and satisfies that the pore size at which the cumulative volume accounts for 20% of the total pore volume is 0.3 μm or larger in the pore size distribution measured by mercury porosimetry. In addition, the positive electrode mixture layer 12 preferably satisfies that the volume of pores having a size of 0.5 to 10 μm accounts for 40% or more of the total pore volume and the mode pore size is in the range of 0.5 to 10 μm in the pore size distribution measured by mercury porosimetry.
    • 要解决的问题:提高输出特性和循环耐久性。 解决方案:锂二次电池10包括在集电体11上形成有正极活性物质的正极合剂层12的正极片13.正极合剂层12含有含有正极活性物质的正极活性物质 含锂氧化物和碳材料的密度为2.0g / cm 3以上,满足累积体积的20%的孔径, 在通过水银孔率法测定的孔径分布中,总孔体积为0.3μm以上。 此外,正极合剂层12优选满足尺寸为0.5〜10μm的孔的体积占总孔体积的40%以上,模式孔径在0.5〜10μm的范围内 通过水银孔率法测量的孔径分布。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Active material for nonaqueous secondary battery, and nonaqueous secondary battery
    • 非正常二次电池的活性材料和非常规的二次电池
    • JP2011100607A
    • 2011-05-19
    • JP2009254190
    • 2009-11-05
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • NAKANO HIROYUKIINOUE TAKAO
    • H01M4/58C01B33/32
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide an active material for nonaqueous secondary battery capable of further improving thermal stability and a nonaqueous secondary battery. SOLUTION: The coin-type battery 20 includes a battery case 21 of cup-shape, a positive electrode installed inside the battery case 21, a negative electrode 23 installed at a position opposed to the positive electrode 22 through a separator 24, a nonaqueous electrolyte solution 27 containing a supporting salt, a gasket 25 formed of an insulating material, and a sealing plate 26 which is arranged at an opening part of the battery case 21 and seals the battery case 21 through the gasket 25. The positive electrode 22 includes a nonaqueous secondary battery active material having a silicon oxide as expressed by a general formula Li 2 M 1-x D x SiO 4 (M is one or more selected from Fe, Co, Ni, and Mn; D is one or more selected from Mg, Ca, and Zn; and x satisfies 0 COPYRIGHT: (C)2011,JPO&INPIT
    • 解决问题:提供能够进一步提高热稳定性的非水二次电池用活性物质和非水系二次电池。 硬币型电池20包括杯状的电池壳体21,安装在电池壳体21内的正极,通过隔板24安装在与正极22相对的位置的负极23, 含有支撑盐的非水电解质溶液27,由绝缘材料形成的垫圈25和密封板26,该密封板26布置在电池壳体21的开口部分处,并通过垫圈25密封电池壳体21.正极 22包括具有由通式Li表示的氧化硅的非水系二次电池用活性物质1 SB < > 4 (M是选自Fe,Co,Ni和Mn中的一种或多种; D是选自Mg,Ca和Zn中的一种或多种; x满足0
    • 10. 发明专利
    • Lithium secondary battery
    • 锂二次电池
    • JP2010218937A
    • 2010-09-30
    • JP2009065651
    • 2009-03-18
    • Toyota Central R&D Labs Inc株式会社豊田中央研究所
    • SAWADA HIROSHIOGIWARA NOBUHIROSASAKI GENHIRUTA OSAMUMIZUTANI MAMORUNAKANO HIROYUKIITO YUICHI
    • H01M10/0525H01M4/133H01M4/58H01M4/587
    • Y02E60/122
    • PROBLEM TO BE SOLVED: To provide a lithium secondary battery in which charging and discharging cycle characteristics can be promoted more. SOLUTION: The lithium secondary battery 10 is equipped with a positive electrode sheet 13 in which a positive electrode active material 12 is formed in a current collector 11, a negative electrode sheet 18 in which a negative electrode active material 17 is formed on the surface of a current collector 14, and a non-aqueous electrolytic liquid 20 filled between the positive electrode sheet 13 and the negative electrode sheet 18. In this lithium secondary battery, iron phosphate lithium compound is contained in the positive active material 12, while 50 wt.% or more of amorphous carbon (for example, easily graphitized carbon) and 50 wt.% or less of graphite are contained in the negative electrode active material 17. Moreover, a composite material layer containing the negative electrode active material 17, a conductive material, and a binding material is formed with porosity of 25 vol% or more and 50 vol% or less. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供可以进一步促进充放电循环特性的锂二次电池。 解决方案:锂二次电池10配备有在集电体11中形成有正极活性物质12的正极片13,负极片18在其上形成负极活性物质17, 集电体14的表面和填充在正极片13和负极片18之间的非水电解液20.在该锂二次电池中,在正极活性物质12中含有磷酸铁锂化合物,同时 在负极活性物质17中含有50重量%以上的无定形碳(例如容易石墨化的碳)和50重量%以下的石墨。而且,含有负极活性物质17的复合材料层, 形成导电材料和粘合材料,其孔隙率为25vol%以上且50vol%以下。 版权所有(C)2010,JPO&INPIT