HIGH-ENERGY, NI-ZN SEALED BATTERY FOR VAS

适用于 VAS 的高能镍锌密封电池

• 批准号: 3508416
• 负责人: MORRIS EISENBERG
• 金额: $ 18.46万
• 依托单位: ELECTROCHIMICA CORPORATION
• 依托单位国家: 美国
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1990-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3508416
• 关键词: biomedical device power system; biomedical equipment development; circulatory assist; nickel; zinc

Both internal and external power for implantable ventricular assist systems (VAS) is currently supplied by nickel-cadmium batteries which provide a rather low energy density (typically 12-14 WH/# and 1.2 WH/cu.in.). We have recently developed a proprietary chemistry for a stabilized nickel-zinc (Ni-Zn) rechargeable battery which in vented cell form has demonstrated a life of 600-800 cycles (compared to 100-150 cycles for conventional Ni-Zn cells). The vastly improved cycle life of the new stabilized chemistry vented Ni-Zn cells was verified in three independent sets of tests. In Phase I of this program, we undertook to develop a sealed version of the stabilized Ni-Zn cells and we have proven the viability of sealed Ni-Zn cell operation at twice the energy density (28-35 WH/# and 1.8-2.5 WH/cu.in.) of commercially available nickel-cadmium cells. In the Phase II program, a systematic investigation of cell components and construction is proposed as a means to develop a final cell prototype. Tasks will include refine studies of basic cell components (selection of cell geometry, zinc anode composition studies, and separator system design) as well as close monitoring of the degree to which cell overpressure is mitigated by our basic oxygen recombination approach. Design studies of both cylindrical and prismatic cells will be carried out. Optimum charging techniques will be investigated. Final design and construction of prototype batteries for a VAS will be completed and submitted for evaluative testing.

植入式心室辅助的内部和外部电源 系统（VAS）目前由镍镉电池供电 其提供相当低的能量密度（通常为12-14 WH/#， 1.2 WH/cu.in.）。 我们最近开发了一种专利化学 对于稳定的镍-锌（Ni-Zn）可再充电电池， 通风单元形式已证明寿命为600-800次循环 （与常规Ni-Zn电池的100-150个循环相比）。 的 大大提高循环寿命的新的稳定化学发泄 Ni-Zn电池在三组独立的测试中得到验证。 在这个项目的第一阶段，我们承诺开发一种密封的 稳定的Ni-Zn电池的版本，我们已经证明了 以两倍能量运行的密封Ni-Zn电池的可行性 密度（28-35 WH/#和1.8-2.5 WH/cu.in.）商业 可用的镍镉电池 在第二阶段计划中，对细胞的系统研究 组件和建设提出了一种手段，以发展一个 最终的细胞原型。 任务将包括完善基础研究 电池组件（电池几何形状的选择，锌阳极成分 研究和分离器系统设计）以及密切监测 细胞超压被我们基本的 氧复合方法 两种圆柱形的设计研究 并将进行棱柱形电池。 最佳充电 技术将被研究。 最终设计和建造 VAS的原型电池将完成并提交给 评估测试。