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    • 4. 发明申请
    • METHOD OF CALIBRATING STATE-OF CHARGE IN A RECHARGEABLE BATTERY
    • 校准可充电电池状态电荷的方法
    • WO2017127676A1
    • 2017-07-27
    • PCT/US2017/014330
    • 2017-01-20
    • OVONIC BATTERY COMPANY, INC.
    • YOUNG, KwoMENG, TiejunMOSAVATI, Negar
    • H01M10/48H01M10/44G01R31/36
    • G01R35/005G01R31/3606H01M10/345H01M10/48
    • Provided are processes for the calibration of a battery system whereby a secondary battery is formed with an anode, a cathode, or both that includes two or more active materials that differ by at least one chemical or physical parameter. The presence of the two or more differing alloys in the system introduces at least one inflection point in the charge/discharge curves characterizing the system. The location of the inflection point relative to the fresh battery SOC is constant and independent of prior usage, cycling characteristics, or battery temperature. Therefore, by measuring the presence of the inflection point during a charge/discharge cycle or resting state, the exact SOC of the battery is known. If this measured SOC differs from a reference SOC by more than a predetermined value, the predetermined value is updated thereby calibrating the system for accurate display of SOC.
    • 提供用于校准电池系统的方法,其中二次电池由阳极,阴极或两者形成,所述阳极,阴极或两者包括两种或更多种活性材料,所述活性材料相差至少一个化学或物理参数 。 系统中存在两种或更多种不同的合金,在表征系统的充电/放电曲线中引入至少一个拐点。 拐点相对于新电池SOC的位置是恒定的并且与先前的使用,循环特性或电池温度无关。 因此,通过在充电/放电周期或静止状态期间测量拐点的存在,电池的精确SOC是已知的。 如果该测量的SOC与参考SOC的差异超过预定值,则更新预定值,由此校准系统以准确显示SOC。
    • 6. 发明申请
    • HYDROGEN STORAGE ALLOYS HAVING A HIGH POROSITY SURFACE LAYER
    • 具有高孔隙度表面层的氢储存合金
    • WO2004094680A1
    • 2004-11-04
    • PCT/US2004/008831
    • 2004-03-23
    • OVONIC BATTERY COMPANY, INC.
    • FETCENKO, Michael, A.OVSHINSKY, Stanford, R.YOUNG, KwoREICHMAN, BenjaminOUCHI, TaiheiKOCH, JohnMAYS, William
    • C22C30/00
    • H01M4/383H01M10/345Y02E60/324Y10S420/90
    • Electrochemical and thermal hydrogen storage alloy compositions that provide superior performance, including an electrochemical hydrogen storage alloy that provides superior low temperature discharge characteristics. The alloy compositions include microstructures in the interface region that are highly porous and that include catalytic metallic particles. The microstructures include a large volume fraction of voids having spherical or channel-like shapes and are sufficiently open structurally to facilitate greater mobility of reactive species within the microstructure and in the vicinity of catalytic metallic particles. Greater accessibility to reactive sites accordingly results. The greater mobility of reactive species and/or the greater density of catalytic particles lead to faster kinetics and improved performance (e.g. higher power), especially at low operating temperatures. The microstructures may be formed through inclusion of a microstructure tuning element in the alloy composition, through control of processing conditions and/or through inclusion of etching steps in the post-formation processing of hydrogen storage alloys.
    • 提供优异性能的电化学和热储氢合金组合物,包括提供优异的低温放电特性的电化学储氢合金。 合金组合物包括界面区域中的高度多孔的微结构,并且包括催化金属颗粒。 微结构包括具有球形或通道状形状的大体积分数的空隙,并且在结构上足够开放以促进反应性物质在微结构内和催化金属颗粒附近的更大迁移率。 因此可以更好地获得反应性网站。 活性物质的较大迁移率和/或更大密度的催化剂颗粒导致更快的动力学和改进的性能(例如更高的功率),特别是在低的操作温度下。 可以通过在合金组合物中包含微结构调谐元件,通过控制加工条件和/或通过在储氢合金的后形成处理中包括蚀刻步骤来形成微观结构。