中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.014 seconds)

    NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
    1.
    发明申请
    NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY 审中-公开

    公开(公告)号：US20200251738A1

    公开(公告)日：2020-08-06

    申请号：US16749729

    申请日：2020-01-22

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yutaka OYAMA ,  Yuji YOKOYAMA ,  Naoto ONODERA

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/36 ,  H01M10/0565

    Abstract: According to the present disclosure, there is provided a technique capable of suitably reducing the battery resistance of a lithium ion secondary battery. In an aspect of a negative electrode disclosed herein, a negative electrode active material layer contains a negative electrode active material, a binder which includes a water-soluble polymer lithium salt, and a sub-material particle including a metal compound which has a hydroxyl group. With this, hopping conduction in which a Li ion moves in such a manner as to slide on hydroxyl groups on the surface of the sub-material particle can occur, and hence it is possible to accelerate supply of the Li ion to the negative electrode active material and achieve a significant reduction in the battery resistance of the lithium secondary battery.

    NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
    3.
    发明申请
    NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20170309945A1

    公开(公告)日：2017-10-26

    申请号：US15516228

    申请日：2015-08-31

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroya UMEYAMA ,  Tatsuya HASHIMOTO ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Yuji YOKOYAMA

    IPC: H01M10/04 ,  H01M4/04 ,  H01M10/052

    CPC classification number: H01M10/045 ,  H01M4/0435 ,  H01M10/049 ,  H01M10/052

    Abstract: A flat-plate portion of a negative electrode composite material layer includes a first end portion at one end portion in a direction of axis of winding of a flat electrode winding assembly, a second end portion located opposite to the first end portion, and a central portion lying between the first end portion and the second end portion. The flat-plate portion of the negative electrode composite material layer is provided with a plurality of communication grooves. The communication groove includes a first terminal end portion at the first end portion, includes a second terminal end portion at the second end portion, includes in the central portion, a starting portion located closer to a bottom portion of a prismatic case relative to the first terminal end portion and the second terminal end portion, and extends from the starting portion toward the first terminal end portion and the second terminal end portion.

    LITHIUM ION SECONDARY BATTERY
    7.
    发明申请
    LITHIUM ION SECONDARY BATTERY 有权
    锂离子二次电池

    公开(公告)号：US20160260974A1

    公开(公告)日：2016-09-08

    申请号：US15061014

    申请日：2016-03-04

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroya UMEYAMA ,  Naoto ONODERA ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Tatsuya HASHIMOTO ,  Yuji YOKOYAMA ,  Hideki SANO

    IPC: H01M4/62 ,  H01M10/0568 ,  H01M4/36 ,  H01M10/0525

    CPC classification number: H01M4/364 ,  H01M2/1673 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/4235

    Abstract: A lithium ion secondary battery includes: an electrode mixture layer that contains an electrode active material and an organic ferroelectric having a dielectric constant of 25 or higher; and an electrolytic solution that contains lithium bis(fluorosulfonyl)imide and a nonaqueous solvent. A content of the organic ferroelectric is 0.5 parts by mass to 10 parts by mass with respect to 100 parts by mass of the electrode active material. A proportion of a high-polarity solvent having a dielectric constant of 10 or higher in the nonaqueous solvent is 10 vol % or lower.

    Abstract translation: 锂离子二次电池包括：电极混合层，其含有电介质常数为25以上的电极活性物质和有机铁电体; 和含有双（氟磺酰基）酰亚胺锂和非水溶剂的电解液。 相对于100质量份的电极活性物质，有机铁电体的含量为0.5质量份〜10质量份。 在非水溶剂中介电常数为10以上的高极性溶剂的比例为10体积％以下。

    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME
    8.
    发明申请
    NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME 有权
    非电解电解质二次电池及其制造方法

    公开(公告)号：US20160141628A1

    公开(公告)日：2016-05-19

    申请号：US14941002

    申请日：2015-11-13

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroya UMEYAMA ,  Tatsuya HASHIMOTO ,  Naoyuki WADA ,  Yusuke FUKUMOTO ,  Naoto ONODERA ,  Yuji YOKOYAMA

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M4/70

    CPC classification number: H01M4/628 ,  H01M4/70 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2220/20

    Abstract: A nonaqueous electrolyte secondary battery includes: a negative electrode current collector foil; and a negative electrode mixture layer that is arranged on the negative electrode current collector foil. The negative electrode mixture layer contains a plurality of granulated particles. Each of the granulated particles contains a negative electrode active material and a coating film. The coating film is formed on a surface of the negative electrode active material. The coating film includes a first film and a second film. The first film is formed on the surface of the negative electrode active material. The second film is formed on the first film. The first film contains a carboxymethyl cellulose polymer. The second film contains a polyacrylic acid polymer.

    Abstract translation: 非水电解质二次电池包括：负极集电箔; 以及设置在负极集电箔上的负极合剂层。 负极混合层含有多个造粒颗粒。 每个造粒颗粒包含负极活性材料和涂膜。 涂膜在负极活性物质的表面上形成。 涂膜包括第一膜和第二膜。 第一膜形成在负极活性物质的表面上。 第二个膜形成在第一个膜上。 第一膜含有羧甲基纤维素聚合物。 第二层膜含有聚丙烯酸聚合物。

    METHOD FOR PRODUCING NEGATIVE ELECTRODE AND SECONDARY BATTERY, AND SECONDARY BATTERY
    9.
    发明申请
    METHOD FOR PRODUCING NEGATIVE ELECTRODE AND SECONDARY BATTERY, AND SECONDARY BATTERY 审中-公开

    公开(公告)号：US20180108903A1

    公开(公告)日：2018-04-19

    申请号：US15782466

    申请日：2017-10-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kazuhisa TAKEDA ,  Yuji YOKOYAMA ,  Keisuke OHARA

    IPC: H01M4/04 ,  H01M8/10

    CPC classification number: H01M4/0404 ,  H01M4/02 ,  H01M4/043 ,  H01M4/0435 ,  H01M4/62 ,  H01M8/10

    Abstract: Provided is a method for producing a negative electrode by using a negative electrode active material and ceramic particles, the method ensuring satisfactory coatability of the paste and high peel strength and hardness of the obtained negative electrode active material layer. The method for producing a negative electrode disclosed herein includes a step of coating a negative electrode paste including a negative electrode active material and ceramic particles on a negative electrode current collector; a step of drying the coated negative electrode paste to form a negative electrode active material layer; and a step of pressing the negative electrode active material layer. The ceramic particles have an aspect ratio of 1.5 or more and 20 or less. The ceramic particles have a short side length of 1/5 or less of an average particle diameter of the negative electrode active material. In the negative electrode paste, the ceramic particles are contained in an amount of 3% by mass to 20% by mass based on a total solid content of the negative electrode paste.

    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    10.
    发明申请
    NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 有权
    非水电解质二次电池

    公开(公告)号：US20160336568A1

    公开(公告)日：2016-11-17

    申请号：US15095349

    申请日：2016-04-11

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hiroya UMEYAMA ,  Yusuke FUKUMOTO ,  Naoyuki WADA ,  Yuji YOKOYAMA ,  Tatsuya HASHIMOTO ,  Naoto ONODERA

    IPC: H01M2/16 ,  H01M10/0587 ,  H01M4/131 ,  H01M4/587 ,  H01M4/505 ,  H01M4/62 ,  H01M4/133 ,  H01M10/0525 ,  H01M4/525

    CPC classification number: H01M2/1666 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/1686 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M10/0525 ,  H01M10/0587 ,  Y02T10/7011

    Abstract: Provided is a non-aqueous electrolyte secondary battery in which an increase in resistance is suppressed when high rate pulsed charging and discharging is repeatedly carried out. The non-aqueous electrolyte secondary battery provided by the present disclosure is provided with: a positive electrode; a negative electrode; a separator; and a non-aqueous electrolyte solution. The separator is provided with a separator base made of a non-woven fabric; a first resin layer provided on a surface of the separator base that faces the positive electrode; and a second resin layer provided on a surface of the separator base that faces the negative electrode. In addition, a resin matrix of the first resin layer is constituted from polytetrafluoroethylene or a copolymer containing polytetrafluoroethylene as a primary component, and a resin matrix of the second resin layer is constituted from poly(vinylidene fluoride) or a copolymer containing poly(vinylidene fluoride) as a primary component.

    Abstract translation: 提供一种非水电解质二次电池，其中当重复进行高速脉冲充电和放电时，电阻的增加被抑制。 本发明提供的非水电解质二次电池具有：正极; 负极; 分隔符 和非水电解质溶液。 隔板设有由无纺布制成的隔板基座; 第一树脂层，设置在所述隔板基体的与所述正极相对的面上; 以及设置在所述隔板基板的与所述负极相对的面上的第二树脂层。 此外，第一树脂层的树脂基体由聚四氟乙烯或含有聚四氟乙烯作为主要成分的共聚物构成，第二树脂层的树脂基体由聚（偏二氟乙烯）或含有聚偏二氟乙烯 ）作为主要组成部分。

Patent Agency Ranking