IMPROVED BATTERIES FOR VENTRICULAR ASSIST SYSTEMS

第一阶段SBIR已经成功地确定了新的锌，电解质， 用于密封镍-锌电池的隔板组合， 左心室辅助装置（LVAD）的扩展操作。基于 根据这些结果，第二阶段SBIR概述了一个持续的计划，该计划将 导致开发出密封的4.7Ah/12伏Ni-Zn电池， 具有88 Wh/kg（40 Wh/lb）的重量能量密度和 能量密度为120 Wh/l（2.0 Wh/in 3）。的比重， 电池重量约为0.64 kg（1.4 lbs）。该单位将能够 充电前给左心室辅助装置供电八小时拟议程序 将继续致力于研究工作，以延长循环寿命， 500个周期。 硬件开发将集中在密封电池和塑料卷上- 结合电极技术，生产重量轻的部件， 电化学利用 改进的细胞化学将是 设计成单体结构的原型电池， 可以当腰包穿 建议的商业应用：小型电池将最终 在医疗领域的应用，用于LVAD、人工心脏、便携式 胰岛素泵等，并且在膝上型计算机的更广泛的商业应用中 计算机和便携式通信设备。大型镍锌电池 可以用于电动汽车。

The Phase I SBIR has successfully identified new zinc, electrolyte, and separator combinations for sealed nickel-zinc batteries which will permit extended operation for left ventricular assist devices (LVAD). Based on these results, the Phase II SBIR outlines a continued program which will result in the development of a sealed 4.7 Ah/12 volt Ni-Zn battery which has gravimetric energy density of 88 Wh/kg (40 Wh/lb) and a volumetric energy density of 120 Wh/l (2.0 Wh/in3). The specific weight of the battery will be about 0.64 kg (1.4 lbs). The unit will be capable of powering an LVAD for eight hours before recharging. The proposed program will center on continued research work to extend the cycle life to beyond 500 cycles. Hardware development will focus on a sealed battery and plastic roll- bonded electrodes technology which yields lightweight components with high electrochemical utilization. The improved cell chemistries will be engineered into prototype batteries in a monobloc construction which can be worn as a beltpack. PROPOSED COMMERCIAL APPLICATION: The small batteries will have eventual application in the medical field for LVADs, artificial hearts, portable insulin pumps, etc. and in a wider commercial application for lap-top computers, and portable communication equipment. Larger Ni-Zn batteries may find use in electric vehicles.