公开(公告)号：US09929398B2

公开(公告)日：2018-03-27

申请号：US14235599

申请日：2011-07-29

申请人： Koji Takahata

发明人： Koji Takahata

IPC分类号： H01M4/04 ,  H01M4/583 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/36

CPC分类号： H01M4/0404 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  Y02T10/7011

摘要： A Lithium-ion secondary battery (100A) has a negative electrode current collector (241A) and a negative electrode active material layer (243A) coated on the negative electrode current collector (241A). The negative electrode active material layer (243A) contains negative electrode active material particles (710A). The negative electrode active material particles (710A) include graphite particles each at least partially covered by an amorphous carbon film (750). The weight ratio X of the amorphous carbon film (750) in the negative electrode active material particles (710A) is 0.02≤X≤0.06. The negative electrode active material particles (710A) have a linseed oil absorption number Y (mL/100 g) of 35 (mL/100 g)≤Y≤70 (mL/100 g).

公开(公告)号：US09583753B2

公开(公告)日：2017-02-28

申请号：US14366025

申请日：2011-12-19

申请人： Koji Takahata

发明人： Koji Takahata

IPC分类号： H01M2/34 ,  H01M10/0525 ,  H01M2/06 ,  H01M2/26 ,  H01M2/30

CPC分类号： H01M2/345 ,  H01M2/06 ,  H01M2/26 ,  H01M2/263 ,  H01M2/30 ,  H01M10/0525 ,  H01M2200/20 ,  Y02E60/122 ,  Y02T10/7011

摘要： A battery, which is provided with a pressure-type current interrupt mechanism, is provided with: a gas-generating material placed outside an electrode body and within a battery case; a positive electrode potential member that is placed outside the electrode body and within the battery case in a manner contacting the gas-generating material, and conducts with the positive electrode of the electrode body; and a negative electrode potential member that is placed outside the electrode body and within the battery case in a manner contacting the gas-generating material while being spaced from the positive electrode potential member, and conducts with the negative electrode of the electrode body. The gas-generating material includes a gas-generating agent that generates a gas when the potential of the positive electrode potential member exceeds a gas generation potential.

摘要翻译： 设置有压力型电流中断机构的电池设置有：放置在电极体外部和电池壳体内的气体发生材料; 正极电极部件，以与气体发生材料接触的方式配置在电极主体的外部并在电池壳体内，并与电极体的正极导通; 以及负极电极部件，与负极电极部件间隔开而以与气体发生材料接触的方式配置在电极主体的外侧且在电池壳体内，并与电极体的负极导通。 气体发生材料包括当正极电位部件的电位超过气体产生电位时产生气体的气体发生剂。

公开(公告)号：US09312568B2

公开(公告)日：2016-04-12

申请号：US14366849

申请日：2011-12-21

申请人： Koji Takahata ,  Hideki Sano

发明人： Koji Takahata ,  Hideki Sano

IPC分类号： H01M4/587 ,  H01M10/0583 ,  H01M4/133 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0587 ,  B60L11/18 ,  H01M4/02

CPC分类号： H01M10/0583 ,  B60L11/18 ,  B60L11/1862 ,  B60L11/1879 ,  H01M4/133 ,  H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/027 ,  Y02E60/122 ,  Y02T10/7011 ,  Y02T10/7044 ,  Y02T10/705

摘要： A lithium secondary battery 10 of the present invention is a secondary battery provided with a positive electrode 30 having a positive electrode active material layer 34 on a positive electrode collector 32, and a negative electrode 50 having a negative electrode active material layer 54 on a negative electrode collector 52. The positive electrode active material layer 34 contains a positive electrode active material capable of reversibly storing and releasing lithium ions. The negative electrode active material layer 54 contains a negative electrode active material made up of lamellar graphite that is bent so as to have an average number of bends f per particle of 0

摘要翻译： 本发明的锂二次电池10是具有在正极集电体32上具有正极活性物质层34的正极30的二次电池，负极50具有负极活性物质层54的负极 正极活性物质层34含有可逆地储存和释放锂离子的正极活性物质。 负极活性物质层54含有由层状石墨构成的负极活性物质，该负极活性物质被弯曲成具有每个颗粒的平均弯曲数f为0

公开(公告)号：US09190661B2

公开(公告)日：2015-11-17

申请号：US14116441

申请日：2011-05-10

申请人： Koji Takahata

发明人： Koji Takahata

IPC分类号： H01M4/13 ,  H01M4/36 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/04

CPC分类号： H01M4/364 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49115

摘要： A secondary battery is provided with a negative electrode sheet including a negative active material layer including negative active material particles. The negative active layer contains, as the negative active material particles, graphite particles formed from graphite and amorphous carbon particles formed from amorphous carbon. The difference (ΔS)(=Sb−Sa) in specific surface area between the specific surface area (Sb) of the amorphous carbon particles and the specific surface area (Sa) of the graphite particles is −0.3 to 2.6 m2/g.

摘要翻译： 二次电池设置有包括负极活性物质层的负极片，所述负极活性物质层包含负极活性物质粒子。 作为负极活性物质，负极活性层含有由无定形碳形成的石墨和无定形碳粒子形成的石墨粒子。 无定形碳粒子的比表面积（Sb）与石墨粒子的比表面积（Sa）之间的比表面积的差（＆Dgr; S）（= Sb-Sa）为-0.3〜2.6m 2 / g 。

公开(公告)号：US08936875B2

公开(公告)日：2015-01-20

申请号：US12937419

申请日：2009-12-16

申请人： Koji Takahata ,  Hideki Sano

发明人： Koji Takahata ,  Hideki Sano

IPC分类号： H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/0566

CPC分类号： H01M10/0525 ,  H01M4/133 ,  H01M10/0566 ,  Y02E60/122 ,  Y02T10/7011

摘要： In a lithium ion secondary battery, an electrode assembly, in which a positive electrode sheet having a positive electrode mixture layer and a negative electrode sheet having a negative electrode mixture layer are overlain each other, is housed in a container together with a nonaqueous electrolyte solution. The negative electrode mixture layer includes a carbon material having at least in part a graphite structure as a negative active material. When S (m2) represents a value obtained by calculating a total surface area of the negative electrode active material included in a region of the negative electrode mixture layer lying opposite the positive electrode mixture layer per 1 Ah of capacity of the battery, V represents a value obtained by calculating a total volume of pores included in the region of the negative electrode mixture layer per 1 Ah of capacity of the battery, and N represents the number of lithium ions included within the volume V of the nonaqueous electrolyte solution, the value α computed by the formula α=S×N is from 1×1022 to 2.5×1022.

摘要翻译： 在锂离子二次电池中，将具有正极复合层的正极片和具有负极混合层的负极片彼此重叠的电极组件与非水电解质溶液一起容纳在容器中 。 负极混合物层包括至少部分具有作为负极活性物质的石墨结构的碳材料。 当S（m2）表示通过计算负极活性物质的总表面积而得到的值，该负极活性物质的总面积与负极混合物层的与电池容量的每Ah容量相对的区域相对，V表示 通过计算每单位电池容量的负极混合物层的区域中包含的孔的总体积得到的值，N表示包含在非水电解液的体积V内的锂离子数，值α 由公式α= S×N计算为1×1022〜2.5×1022。

公开(公告)号：US20140065478A1

公开(公告)日：2014-03-06

申请号：US14004215

申请日：2011-03-11

申请人： Toshihiko Mitsuhashi ,  Koji Takahata ,  Akihiro Ochiai

发明人： Toshihiko Mitsuhashi ,  Koji Takahata ,  Akihiro Ochiai

IPC分类号： H01M4/1393

CPC分类号： H01M4/1393 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/133 ,  H01M4/583 ,  H01M10/052 ,  H01M10/058 ,  H01M2004/021 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

摘要： The present invention provides a method of manufacturing a nonaqueous electrolyte secondary battery in which graphite fissuring during rolling of the negative electrode mixture layer is prevented and a deterioration in the performance of the battery is thereby suppressed. The manufacturing method provided by the present invention is a method of manufacturing a nonaqueous electrolyte secondary battery that has a positive electrode and a negative electrode, and includes: a coating step of coating a current collector 22 with a positive electrode mixture 23 containing graphite 25; a magnetic field application step of applying, to the negative electrode mixture 23 made to coat the current collector 22 in the coating step, a magnetic field in which the magnetic lines of force are oriented in one direction parallel to the plane of the current collector 22 coated with the negative electrode mixture 23; a drying step of drying the negative electrode mixture 23 to which the magnetic field has been applied in the magnetic field application step; and a rolling step of rolling a negative electrode mixture layer resulted from the drying step.

摘要翻译： 本发明提供一种制造非水电解质二次电池的方法，其中防止了在负极混合物层的轧制过程中的石墨裂纹并且由此抑制了电池的性能的劣化。 本发明提供的制造方法是制造具有正极和负极的非水电解质二次电池的制造方法，其特征在于，包括：使用含有石墨25的正极合剂23涂布集电体22的涂布工序; 磁场施加步骤，在涂布步骤中对在集电体22上涂布的负极混合物23施加磁场，其中磁力线在与集电体22的平面平行的一个方向上取向 涂覆有负极混合物23; 在磁场施加步骤中干燥施加了磁场的负极混合物23的干燥步骤; 以及由干燥工序得到的负极混合物层的轧制工序。

公开(公告)号：US08617742B2

公开(公告)日：2013-12-31

申请号：US13388512

申请日：2009-08-04

申请人： Koji Takahata ,  Yukihiro Okada

发明人： Koji Takahata ,  Yukihiro Okada

IPC分类号： H01M10/056 ,  H01M10/0568

CPC分类号： H01M10/0567 ,  H01M10/0525 ,  H01M10/0568 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49108 ,  Y10T29/4911

摘要： There is provided a lithium ion secondary cell excellent in charging and discharging cycle characteristics. A lithium ion secondary cell includes an electrode body including a positive electrode having a positive electrode active material, a negative electrode having a negative electrode active material, and a separator, and a non-aqueous electrolyte containing a lithium salt as a supporting salt in an organic solvent, the electrode body and the non-aqueous electrolyte being accommodated in a case. The positive electrode active material is a lithium transition metal oxide having a spinel type structure. The electrolyte contains a compound represented by a chemical formula (I) in an amount of β mol relative to the total content α mol of moisture to be mixed in the cell. β satisfies −0.8≦log(β/α)≦1.5.

摘要翻译： 提供了充放电循环特性优异的锂离子二次电池。 锂离子二次电池包括电极体，其包括具有正极活性物质的正极，具有负极活性物质的负极和隔板，以及含有锂盐作为支持盐的非水电解质 有机溶剂，电极体和非水电解质容纳在壳体中。 正极活性物质是具有尖晶石型结构的锂过渡金属氧化物。 所述电解质含有化学式（I）表示的化合物相对于在所述电池中混合的水分的总摩尔量的β摩尔量。 beta满足-0.8@log（beta / alpha）@ 1.5。

公开(公告)号：US20130252111A1

公开(公告)日：2013-09-26

申请号：US13990837

申请日：2010-12-06

申请人： Koji Takahata ,  Hideki Sano

发明人： Koji Takahata ,  Hideki Sano

IPC分类号： H01M4/133 ,  H01M4/1393

CPC分类号： H01M4/133 ,  H01M4/0404 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T29/49115

摘要： A lithium ion secondary battery involves a negative electrode sheet including a negative current collector and a negative active material layer that contains negative active material particles including first particles and second particles. In the negative active material layer, the ratio of the first particles to the total negative active material particles in a part on the current collector side in the layer thickness direction of the negative active material layer is higher than the ratio of the first particles to the total negative active material particles in the whole negative active material layer and the ratio of the second particles to the total negative active material particles in a part on an outer surface side of the negative active material layer in the layer thickness direction is higher than the ratio of the second particles to the total negative active material particles in the whole negative active material layer.

摘要翻译： 锂离子二次电池包括含有负极集电体和负极活性物质层的负极片，负极活性物质层含有包含第一粒子和第二粒子的负极活性物质粒子。 在负极活性物质层中，负极活性物质层的层厚方向上的集电体侧的一部分中的第一粒子与总负极活性物质粒子的比例高于第一粒子与 整个负极活性物质层中的负极活性物质粒子的总负极活性物质粒子与负极活性物质层的外侧面的层厚度方向的一部分中的第二粒子与总负极活性物质粒子的比例高于 的第二粒子与整个负极活性物质层中的总负极活性物质粒子的关系。

公开(公告)号：US20120251878A1

公开(公告)日：2012-10-04

申请号：US13498362

申请日：2009-09-28

申请人： Tomoyoshi Ueki ,  Koji Takahata ,  Masaya Takahashi ,  Hiroe Takenaka ,  Mariko Sumi ,  Mika Okubo

发明人： Tomoyoshi Ueki ,  Koji Takahata ,  Masaya Takahashi ,  Hiroe Takenaka ,  Mariko Sumi ,  Mika Okubo

IPC分类号： H01M4/64 ,  H01M10/04

CPC分类号： H01M4/133 ,  H01M4/366 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/021 ,  H01M2220/20 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49108

摘要： The lithium secondary battery provided by the present invention includes a negative electrode having a negative electrode collector and a negative electrode layer including a negative electrode active material and formed on the surface of the negative electrode collector, and is characterized in that the negative electrode layer comprises a negative electrode active material layer composed primarily of a negative electrode active material, and an insulating layer composed primarily of an insulating filler and formed on the negative electrode active material layer, and the ratio (Sb/Sa) of a pore specific surface area of the insulating layer (Sb: m2/g) to a pore specific surface area of the negative electrode active material layer (Sa: m2/g), as measured by a mercury porosimeter, satisfies the relationship 1.2≦(Sb/Sa)≦2.5.

摘要翻译： 本发明提供的锂二次电池包括具有负极集电体的负极和包含负极活性物质的负极层，并形成在负极集电体的表面上，其特征在于，负极层包含 主要由负极活性物质构成的负极活性物质层和形成在负极活性物质层上的主要由绝缘性填料构成的绝缘层，和比表面积的比（Sb / Sa） 通过水银孔率计测定的绝缘层（Sb：m2 / g）与负极活性物质层的孔比表面积（Sa：m2 / g）满足关系1.2＆nlE;（Sb / Sa）＆nlE ; 2.5。

公开(公告)号：US20120244417A1

公开(公告)日：2012-09-27

申请号：US12937419

申请日：2009-12-16

申请人： Koji Takahata ,  Hideki Sano

发明人： Koji Takahata ,  Hideki Sano

IPC分类号： H01M2/02 ,  H01M4/583

CPC分类号： H01M10/0525 ,  H01M4/133 ,  H01M10/0566 ,  Y02E60/122 ,  Y02T10/7011

摘要： The present invention provides a lithium ion secondary battery in which an electrode assembly, in which a positive electrode sheet having a positive electrode mixture layer and a negative electrode sheet having a negative electrode mixture layer are overlain each other, is housed in a container together with a nonaqueous electrolyte solution. The negative electrode mixture layer includes a carbon material having at least in part a graphite structure as a negative active material. When S (m2) represents a value obtained by calculating a total surface area of the negative electrode active material included in a region of the negative electrode mixture layer lying opposite the positive electrode mixture layer per 1 Ah of capacity of the battery, V represents a value obtained by calculating a total volume of pores included in the region of the negative electrode mixture layer per 1 Ah of capacity of the battery, and N represents the number of lithium ions included within the volume V of the nonaqueous electrolyte solution, the value α computed by the formula α=S×N is from 1×1025 to 2.5×1025.

摘要翻译： 本发明提供一种锂离子二次电池，其中将具有正极合剂层的正极片和具有负极混合层的负极片彼此重叠的电极组件与容器一起容纳在容器中，以及 非水电解液。 负极混合物层包括至少部分具有作为负极活性物质的石墨结构的碳材料。 当S（m2）表示通过计算负极活性物质的总表面积而得到的值，该负极活性物质的总面积与负极混合物层的与电池容量的每Ah容量相对的区域相对，V表示 通过计算每单位电池容量的负极混合物层的区域中包含的孔的总体积得到的值，N表示包含在非水电解液的体积V内的锂离子数，值α 由公式α= S×N计算为1×1025〜2.5×1025。