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    • 1. 发明专利
    • Method for manufacturing nonaqueous electrolyte secondary battery
    • 制造非水电解二次电池的方法
    • JP2014157748A
    • 2014-08-28
    • JP2013028392
    • 2013-02-15
    • Toyota Motor Corpトヨタ自動車株式会社
    • SUGIHARA ATSUSHIUEZONO TOMOYUKIMESHIDA TOMOYAWADA NAOYUKITSUTSUMI SHUJIHASHIMOTO TATSUYA
    • H01M4/139H01M4/133H01M4/62H01M10/0525H01M10/0566H01M10/0567H01M10/058H01M10/0587
    • Y02E60/122Y02P70/54Y02T10/7011
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonaqueous electrolyte secondary battery, by which a coating can be formed on an active material layer without causing unevenness.SOLUTION: The method for manufacturing a nonaqueous electrolyte secondary battery disclosed herein includes the steps of: (a) kneading a negative electrode active material and an oxalate complex compound with a predetermined solvent to prepare a negative electrode paste A; (b) kneading a negative electrode active material with a predetermined solvent without containing an oxalate complex compound to prepare a negative electrode paste B; (c) coating the negative electrode paste B on a central strip-like region which is a negative electrode active material layer formation region on a long negative electrode collector and includes the center in the width direction orthogonal to the longitudinal direction of the negative electrode active material layer formation region; (d) coating the negative electrode paste A on a region which is the negative electrode active material layer formation region and excludes the central strip-like region; (e) constructing an electrode body using a negative electrode coated with the negative electrode pastes A and B; and (f) constructing a battery by accommodating the electrode body and a nonaqueous electrolyte in a battery case.
    • 要解决的问题:提供一种制造非水电解质二次电池的方法,通过该方法可以在活性材料层上形成涂层而不引起不均匀。解决方案:本文公开的非水电解质二次电池的制造方法包括以下步骤: (a)将负极活性物质和草酸盐配位化合物与规定的溶剂混合,制作负极糊剂A; (b)将负极活性物质与规定的溶剂混合而不含草酸盐配位化合物,制作负极糊剂B; (c)在长负极集电体上将负极浆料B涂布在作为负极活性物质层形成区域的负极活性物质层形成区域的中央带状区域上,并且包括与负极活性物质的长度方向正交的宽度方向的中心 材料层形成区域; (d)将负极糊剂A涂布在作为负极活性物质层形成区域的区域上,不包括中央带状区域; (e)使用涂覆有负极糊料A和B的负极构造电极体; 和(f)通过将电极体和非水电解质容纳在电池壳体中来构造电池。
    • 3. 发明专利
    • Positive electrode plate, and method of manufacturing the same
    • 正极电极板及其制造方法
    • JP2013089485A
    • 2013-05-13
    • JP2011229701
    • 2011-10-19
    • Toyota Motor Corpトヨタ自動車株式会社
    • UEZONO TOMOYUKIMESHIDA TOMOYA
    • H01M4/13H01M4/139H01M4/62
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a positive electrode plate having high adhesion of a positive electrode mixture layer and improved quality by using positive electrode paste having a high solid content.SOLUTION: In this positive electrode plate 1, the positive electrode mixture layer 20 containing a positive electrode active material and a carbon-based conductive material is formed on the surface of a positive electrode core material 10. The positive electrode paste containing a macromolecular polymer type dispersant and a pigment derivative type dispersant is applied to the surface of the positive electrode core material 10 and dried as a dispersant for dispersing the carbon-based conductive material. Since the macromolecular polymer type dispersant is used as the dispersant, adhesion between the positive electrode mixture layer 20 and the positive electrode core material 10 is improved in the positive electrode plate 1. Since the pigment derivative type dispersant is used as the dispersant, viscosity of the positive electrode paste can be sharply lowered. In other words, lowering the viscosity of the positive electrode paste by increasing an amount of solvent is not necessary, and the solid content of the positive electrode paste can be raised. As a result, quality of the positive electrode plate 1 is improved.
    • 要解决的问题:通过使用具有高固体含量的正极膏,提供具有高正极合剂层附着力的正极板和提高质量。 解决方案:在该正极板1中,在正极芯材10的表面上形成含有正极活性物质和碳基导电材料的正极合剂层20。 将高分子聚合物型分散剂和颜料衍生物型分散剂涂覆在正极芯材10的表面上,并作为用于分散碳基导电材料的分散剂进行干燥。 由于使用大分子聚合物型分散剂作为分散剂,所以在正极板1中正极复合层20和正极芯材10之间的密合性提高。由于使用颜料衍生物型分散剂作为分散剂, 正极浆料可以急剧下降。 换句话说,不需要通过增加溶剂量来降低正极浆料的粘度,并且可以提高正极浆料的固体含量。 结果,提高了正极板1的质量。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Method for manufacturing nonaqueous electrolyte secondary battery
    • 制造非水电解二次电池的方法
    • JP2014130729A
    • 2014-07-10
    • JP2012287583
    • 2012-12-28
    • Toyota Motor Corpトヨタ自動車株式会社
    • SUGIHARA ATSUSHIUEZONO TOMOYUKIMESHIDA TOMOYANISHIO YOSHINORIWADA NAOYUKIKONISHI HAJIME
    • H01M10/058H01M4/62H01M10/052H01M10/0567H01M10/0569H01M10/0587
    • Y02P70/54
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonaqueous electrolyte secondary battery in which a material derived from a charge carrier is suppressed from being precipitated by forming a coat of a more preferable mode on the surface of a negative electrode active material.SOLUTION: A manufacturing method of the present invention includes: a step (S10) of preparing a positive electrode and a negative electrode, while a sodium component is contained, as inevitable impurities, in at least the negative electrode; a step (S20) of forming an electrode body using the prepared positive electrode and the negative electrode; a step (S30) of forming an assembly including the electrode body accommodated within a battery case; a first injecting step (S40) of injecting a nonaqueous solvent having a dielectric constant of 10 or less into the battery case; a second injection step (S50) of, after the first injection step, injecting a nonaqueous electrolyte containing a lithium bis(oxalato)borate into the battery case; and a step (S60) of performing initial charge of the assembly.
    • 要解决的问题:提供一种非水电解质二次电池的制造方法,其中来自电荷载体的材料通过在负极活性材料的表面上形成更优选的模式的涂层而被抑制而沉淀。 本发明的制造方法包括:在至少负极中含有作为不可避免的杂质的钠成分的正极和负极的准备工序(S10) 使用所制备的正极和负极形成电极体的步骤(S20); 形成包括容纳在电池壳体内的电极体的组件的步骤(S30) 将介电常数为10以下的非水溶剂注入电池壳体的第一注入工序(S40) 在第一注射步骤之后的第二注射步骤(S50)中,将含有双(草酸)硼酸锂的非水电解质注入到电池壳体中; 以及执行组件的初始充电的步骤(S60)。