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    • 102. 发明授权
    • Phosphonate additives for nonaqueous electrolyte in rechargeable electrochemical cells
    • 磷酸盐添加剂用于可再充电电化学电池中的非水电解质
    • US06495285B2
    • 2002-12-17
    • US09740639
    • 2000-12-19
    • Hong GanEsther S. Takeuchi
    • Hong GanEsther S. Takeuchi
    • H01M604
    • H01M10/0567H01M10/0525Y10T29/49108
    • A lithium ion electrochemical cell having high charge/discharge capacity, long cycle life and exhibiting a reduced first cycle irreversible capacity, is described. The stated benefits are realized by the addition of at least one phosphonate additive having the formula (R1O)P(═O) (OR2) (R3) provided in the electrolyte. In the phosphonate formula, R3 is a hydrogen atom and wherein at least one, but not both, of R1 and R2 is a hydrogen atom and the other of R1 and R2 is an organic group containing 1 to 13 carbon atoms. Or, at least one of R1 and R2 is an organic group containing at least 3 carbon atoms and having an sp or sp2 hybridized carbon atom bonded to an sp3 hybridized carbon atom bonded to the oxygen atom bonded to the phosphorous atom, or at least one of R1 and R2 is an unsaturated inorganic group.
    • 描述了具有高充电/放电容量,长循环寿命并且显示出降低的第一周期不可逆容量的锂离子电化学电池。 通过添加至少一种在电解质中提供的式(R1O)P(= O)(OR2)(R3))的膦酸酯添加剂来实现所述的益处。 在膦酸酯配方中,R 3是氢原子,并且其中R 1和R 2中的至少一个但不同时是氢原子,R 1和R 2中的另一个是含有1至13个碳原子的有机基团。 或者,R1和R2中的至少一个是含有至少3个碳原子的有机基团,并且具有与结合至磷原子的氧原子键合的sp 3杂化碳原子键合的sp或sp2杂化碳原子,或至少一个 的R1和R2是不饱和的无机基团。
    • 103. 发明授权
    • Thermal protection separator for alkali metal batteries
    • 碱金属电池用热保护隔板
    • US06475666B1
    • 2002-11-05
    • US08801006
    • 1997-02-19
    • Esther S. Takeuchi
    • Esther S. Takeuchi
    • H01M218
    • H01M10/0413H01M2/0217H01M2/1666H01M6/10H01M10/0454H01M10/4235H01M2200/00H01M2200/10H01M2300/0025
    • A separator for shutting down current flow in a lithium or other alkali metal battery during a short circuit condition to prevent cell rupture. In one form, the separator comprises a layer of microporous polyethylene film, or other suitable microporous film having a melting point which is less than about 135° C., for providing good puncture resistance and for melting at a low temperature for increasing the margin of safety without significantly sacrificing performance. The separator also includes a layer of non-woven polypropylene, or other suitable non-woven material having a melting point which is at least about 10° C. higher than the melting point of the microporous film, to provide good strength and tear resistance so as to maintain physical integrity of the separator so that the short circuit condition is not worsened. In another form the separator comprises the combination of polyethylene on one of the battery electrodes, i.e. anode or cathode, and polypropylene on the other of the battery electrodes.
    • 一种用于在短路状态下关闭锂或其他碱金属电池中的电流的隔板,以防止电池破裂。 在一种形式中,分离器包括一层微孔聚乙烯膜或其熔点低于约135℃的其它合适的微孔膜,以提供良好的抗穿刺性和在低温下熔化以增加 安全性不会大大降低性能。 分离器还包括一层非织造聚丙烯或其它合适的非织造材料,其熔点比微孔膜的熔点高至少约10℃,以提供良好的强度和抗撕裂性 以保持分离器的物理完整性,使得短路状况不变差。 在另一种形式中,分离器包括在一个电池电极即阳极或阴极上的聚乙烯和另一个电池电极上的聚丙烯的组合。
    • 109. 发明授权
    • Implantable medical device powered by double cells
    • 由双电池供电的植入式医疗器械
    • US6087809A
    • 2000-07-11
    • US473160
    • 1999-12-28
    • Hong GanEsther S. Takeuchi
    • Hong GanEsther S. Takeuchi
    • H02J7/00A61N1/08A61N1/378H01M4/134H01M4/48H01M4/58H01M6/16H01M6/42H01M6/50H01M10/44
    • H01M4/134A61N1/08H01M4/483H01M4/5815H01M6/16H01M6/50A61N1/378H01M2300/0037H01M6/164H01M6/166H01M6/42H01M6/5016
    • A power source including two alkali metal/transition metal oxide cells discharged in parallel to power an implantable medical device is described. The first cell powers the medical device in both a device monitoring mode, for example in a cardiac defibrillator for monitoring the heart beat, and a device actuation mode for charging capacitors requiring high rate electrical pulse discharging. At such time as the first cell is discharged to a predetermined voltage limit, the first cell is disconnected from pulse discharge duty and only used for the device monitoring function. At that time, the second cell is utilized for the high rate electrical pulse discharging function. When the first cell reaches 100% efficiency or a present voltage limit, the second cell then takes over both device monitoring and device actuation functions. In that manner, a greater average discharge efficiency is realized from the two cells than is capable of being delivered from a single cell of similar chemistry.
    • 描述了包括并联排放的两个碱金属/过渡金属氧化物电池以为可植入医疗装置供电的电源。 第一单元在设备监视模式中为医疗设备供电,例如用于监测心跳的心脏除颤器,以及用于对需要高速率电脉冲放电的电容器进行充电的设备致动模式。 在第一电池放电到预定电压极限时,第一电池与脉冲放电占空比断开,仅用于器件监视功能。 此时,第二个电池用于高速电脉冲放电功能。 当第一个电池达到100%效率或当前的电压限制时,第二个电池接管器件监测和器件致动功能。 以这种方式,从两个电池实现的平均放电效率比能够从类似化学的单个电池输送的平均放电效率更高。