IMPROVED BATTERIES FOR VENTRICULAR ASSIST SYSTEMS

第一阶段SBIR已成功识别出新的锌、电解液和 密封锌镍电池隔板组合，允许 左心室辅助装置(LVAD)的延长手术。基于 这些结果，第二阶段SBIR概述了一个持续的计划，将 结果开发了一种密封的4.7ah/12伏镍锌电池，该电池 具有88Wh/kg(40Wh/lb)的重力能量密度和体积 能量密度为120WH/L(2.0WH/英寸3)。水泥浆的比重 电池重约0.64千克(1.4磅)。该部队将能够 在充电之前，为LVAD供电八个小时。拟议中的计划 将专注于持续的研究工作，将循环寿命延长到更长时间 500个周期。 硬件开发将重点放在密封电池和塑料卷上- 键合电极技术，可生产出高质量的轻质部件 电化学法利用。改进后的细胞化学将是 以整体式结构设计成原型电池，可以 被当作皮带包穿着。 拟议的商业应用：小型电池最终将 便携式人工心脏在医疗领域的应用 胰岛素泵等，以及笔记本电脑的更广泛的商业应用 计算机和便携式通信设备。更大的镍锌电池 可能会在电动汽车中使用。

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.