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    • 23. 发明授权
    • Negative electrode containing graphite for lithium ion secondary battery
    • 锂离子二次电池用负极含石墨
    • US08936875B2
    • 2015-01-20
    • US12937419
    • 2009-12-16
    • Koji TakahataHideki Sano
    • Koji TakahataHideki Sano
    • H01M4/133H01M4/583H01M10/0525H01M10/056H01M10/0566
    • H01M10/0525H01M4/133H01M10/0566Y02E60/122Y02T10/7011
    • 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.
    • 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。
    • 24. 发明授权
    • Non-aqueous electrolyte type lithium ion secondary cell
    • 非水电解质型锂离子二次电池
    • US08617742B2
    • 2013-12-31
    • US13388512
    • 2009-08-04
    • Koji TakahataYukihiro Okada
    • Koji TakahataYukihiro Okada
    • H01M10/056H01M10/0568
    • H01M10/0567H01M10/0525H01M10/0568H01M2220/20Y02E60/122Y02P70/54Y02T10/7011Y10T29/49108Y10T29/4911
    • 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.
    • 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。
    • 25. 发明申请
    • LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY
    • 锂离子二次电池和制造锂离子二次电池的方法
    • US20130252111A1
    • 2013-09-26
    • US13990837
    • 2010-12-06
    • Koji TakahataHideki Sano
    • Koji TakahataHideki Sano
    • H01M4/133H01M4/1393
    • H01M4/133H01M4/0404H01M4/1393H01M4/364H01M4/587H01M4/625H01M10/0525H01M2004/021H01M2220/20Y02E60/122Y02P70/54Y10T29/49115
    • 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.
    • 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。
    • 27. 发明申请
    • LITHIUM ION SECONDARY BATTERY
    • 锂离子二次电池
    • US20120244417A1
    • 2012-09-27
    • US12937419
    • 2009-12-16
    • Koji TakahataHideki Sano
    • Koji TakahataHideki Sano
    • H01M2/02H01M4/583
    • H01M10/0525H01M4/133H01M10/0566Y02E60/122Y02T10/7011
    • 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.
    • 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。
    • 28. 发明授权
    • Class D power amplifier
    • D类功率放大器
    • US08022757B2
    • 2011-09-20
    • US12866818
    • 2009-12-09
    • Ryo TakagiKoji Takahata
    • Ryo TakagiKoji Takahata
    • H03F3/38
    • H03F3/217
    • A class D power amplifier includes: a signal input terminal for receiving an analog signal; an analog signal processing unit for amplifying the analog signal; an integrating circuit for integrating the analog signal received from analog signal processing unit; a PWM circuit for providing pulse width modulation to an integration signal received from the integrating circuit, and outputting a resulting pulse width modulation signal having a duty ratio falling within a first duty ratio range; a duty ratio adjusting circuit for adjusting the pulse width modulation signal, received from the PWM circuit, to have a pulse width falling within a second duty ratio range narrower than the first duty ratio range; a first driver and a second driver each for processing the pulse width modulation signal received from the duty ratio adjusting circuit; and power transistors.
    • D类功率放大器包括:用于接收模拟信号的信号输入端; 模拟信号处理单元,用于放大模拟信号; 用于对从模拟信号处理单元接收的模拟信号进行积分的积分电路; PWM电路,用于向从积分电路接收的积分信号提供脉宽调制,并输出具有落在第一占空比范围内的占空比的结果脉宽调制信号; 用于调节从PWM电路接收的脉宽调制信号的占空比调整电路,使脉冲宽度落在比第一占空比范围窄的第二占空比范围内; 第一驱动器和第二驱动器,用于处理从占空比调整电路接收的脉宽调制信号; 和功率晶体管。
    • 29. 发明申请
    • Class D Power Amplifier
    • D类功率放大器
    • US20100315163A1
    • 2010-12-16
    • US12866818
    • 2009-12-09
    • Ryo TakagiKoji Takahata
    • Ryo TakagiKoji Takahata
    • H03F1/00H03F3/217
    • H03F3/217
    • A class D power amplifier includes: a signal input terminal for receiving an analog signal; an analog signal processing unit for amplifying the analog signal; an integrating circuit for integrating the analog signal received from analog signal processing unit; a PWM circuit for providing pulse width modulation to an integration signal received from the integrating circuit, and outputting a resulting pulse width modulation signal having a duty ratio falling within a first duty ratio range; a duty ratio adjusting circuit for adjusting the pulse width modulation signal, received from the PWM circuit, to have a pulse width falling within a second duty ratio range narrower than the first duty ratio range; a first driver and a second driver each for processing the pulse width modulation signal received from the duty ratio adjusting circuit; and power transistors.
    • D类功率放大器包括:用于接收模拟信号的信号输入端; 模拟信号处理单元,用于放大模拟信号; 用于对从模拟信号处理单元接收的模拟信号进行积分的积分电路; PWM电路,用于向从积分电路接收的积分信号提供脉宽调制,并输出具有落在第一占空比范围内的占空比的结果脉宽调制信号; 用于调节从PWM电路接收的脉宽调制信号的占空比调整电路,使脉冲宽度落在比第一占空比范围窄的第二占空比范围内; 第一驱动器和第二驱动器,用于处理从占空比调整电路接收的脉宽调制信号; 和功率晶体管。
    • 30. 发明申请
    • ELECTRODE AND METHOD FOR PRODUCING ELECTRODE
    • 用于生产电极的电极和方法
    • US20100297497A1
    • 2010-11-25
    • US12863632
    • 2009-01-14
    • Koji Takahata
    • Koji Takahata
    • H01M4/02H01M4/82
    • H01M4/64H01M4/667H01M4/668H01M10/052Y02T10/7011Y10T29/49108
    • Disclosed is an electrode (30) (for example, a positive electrode for a lithium ion battery), wherein an active material layer (35) mainly composed of an electrode active material is supported by a metal collector (32). A barrier layer (33) containing a conductive material (330) and a water-insoluble polymer material (334) are formed on the surface of the metal collector (32). The conductive material (330) contains at least a first conductive powder (331) having a certain average particle diameter, and a second conductive powder (332) having an average particle diameter larger than that of the first conductive powder. The ratio of the first conductive powder (331) contained in the barrier layer (33) is higher than that of the second conductive powder (332).
    • 公开了一种电极(30)(例如,锂离子电池用正极),其中主要由电极活性物质构成的活性物质层(35)由金属收集体(32)支撑。 在金属收集器(32)的表面上形成有含有导电材料(330)和水不溶性高分子材料(334)的阻挡层(33)。 导电材料(330)至少包含具有一定平均粒径的第一导电粉末(331)和平均粒径大于第一导电粉末的平均粒径的第二导电粉末(332)。 包含在阻挡层(33)中的第一导电粉末(331)的比例高于第二导电粉末(332)的比率。