SBIR Phase I: Platform for Impedance Diagnostics and Power Management for Electric Vehicle Battery Systems

SBIR 第一阶段：电动汽车电池系统阻抗诊断和电源管理平台

• 批准号: 1621929
• 负责人: Eric Din
• 金额: $ 22.5万
• 依托单位: Hive Battery Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1621929&HistoricalAwards=false
• 关键词: SBIR; Phase; Platform; Impedance; Diagnostics

The broader impact/commercial potential of this project centers on furthering scientific understanding of degradation in electrochemical energy storage. The project will explore technology that will enable the large-scale transfer of a key laboratory-proven diagnostic tool from the lab to the field. This tool, called electrochemical impedance spectroscopy (EIS), is a noninvasive assessment of the internal state of a battery. In contrast to current interest-group-initiated, crowd-sourced qualitative research efforts, EIS would enable the collection and analysis of an unprecedented amount of real-time quantitative data to further scientific understanding of electrochemical lifetime and degradation factors of in applications ranging from electric vehicles to grid and building storage. Highly publicized battery pack failures have increased skepticism of electrochemical energy storage in the public eye, and large-scale scientific studies could aid in faster technological improvements to increase widespread adoption of electrochemical energy storage as the U.S. seeks to improve energy independence, efficiency, and security.This Small Business Innovation Research (SBIR) Phase I project addresses the need to innovate on current battery management methods that force battery system overdesign and power/energy underutilization by introducing a platform to enable diagnosis and correction of inherent cell-to-cell imbalances in electric vehicles to improve battery pack performance, reliability, and safety. Specifically, this work deploys electrochemical impedance spectroscopy in a distributed power electronics platform to provide a new toolset for real-time diagnostics and the improved extraction of important information to aid in the determination of battery cell state of charge and state of health. The goal of Phase I Research is to demonstrate efficient and cost-effective scalability of this power-electronics-based EIS. A proof-of-concept prototype has been verified on small-capacity cells, but a commercial solution will need to manage large-capacity cells with much lower impedance which presents control system and EIS accuracy technical challenges. A power converter and accompanying control system will first be developed to meet target specifications, followed by a demonstration board to demonstrate EIS and power management for a number of series-connected cells.

该项目的更广泛的影响/商业潜力集中在对电化学能源存储中降解的科学理解。该项目将探索将使关键实验室预先经验的诊断工具从实验室转移到现场的技术。该工具称为电化学阻抗光谱（EIS），是对电池内部状态的无创评估。与当前的兴趣组引发的人群定性研究工作相反，EIS将能够收集和分析空前数量的实时定量数据，以进一步科学地了解电化学寿命和从电动汽车到电网和建筑存储等应用中的电化学寿命和降级因素。 Highly publicized battery pack failures have increased skepticism of electrochemical energy storage in the public eye, and large-scale scientific studies could aid in faster technological improvements to increase widespread adoption of electrochemical energy storage as the U.S. seeks to improve energy independence, efficiency, and security.This Small Business Innovation Research (SBIR) Phase I project addresses the need to innovate on current battery management methods that force battery system overdesign and通过引入一个平台来实现电动汽车中固有的细胞对电池不平衡的平台，以提高电池组的性能，可靠性和安全性来纠正电源/能量。具体而言，这项工作在分布式电力电子平台中部署了电化学阻抗光谱，以为实时诊断提供新的工具集，并改善了重要信息的提取，以帮助确定电池电池的充电状态和健康状况。第一阶段研究的目的是证明基于电力电子的EIS的有效且具有成本效益的可扩展性。概念验证原型已在小容量细胞上进行了验证，但是商业解决方案将需要管理具有较低阻抗的大容量细胞，从而呈现控制系统和EIS的精度技术挑战。电力转换器和随附的控制系统将首先开发以满足目标规格，然后是示范委员会，以演示许多串联连接的单元格。