标签: 汽车电池包

Ford的 Ted J. Miller, 先生写的很全，这大概就是OEM厂家在电池厂家的配合之下，仍旧要熬那么长段时间才能有所成就的原因了。   其网上公开的PPT连接为   The Importance of Energy Storage in Automotive Applications Ted J. Miller August 26, 2009 Electrical Energy Storage for Vehicles: Targets and Metrics Ted J. Miller November 3 2009 Energy Storage: Providing the Bridge to an Electrified Future Ted J. Miller December 8, 2009 Future Lithium Demand in Electrified Vehicles Ted J. Miller August 5, 2010   Automotive Cell Designs 这是电池厂家作的事情…… • Durability: material selection and validation,demonstrated long life packaging,manufacturing process and controls • Abuse tolerance: passive safety features • Power:  internal resistance minimization (component and weld stack up analysis) • Terminals: proper sealing is critical,sufficient landed area (current carrying without excessive heating),flexibility for bolted and welded connections • Thermal:  validated model of heat generation and transfer • Low cost: uniformity，manufacturability，low scrap rate   New Technology Requirements 新技术导入需要做的工作 • Data – Performance (vs. T, SOC, and life) – Life (cycle and calendar) – Cost (detailed BOM and model) – Abuse tolerance (subsystem testing) • Design information – Packaging (durability) – Electrical (high current appropriate) – Thermal (heat transfer model) • Models – MATLAB-based performance and life model – Thermal (included in MATLAB model if possible) – Cost (materials, depreciation, labor, overhead, assumptions) • Credible manufacturing plan – Plant investment, timing, and production design qualification – Production materials and equipment suppliers and support – RD plan for performance improvement and cost reduction • Fundamental analysis – Performance degradation identification and validation 这里将对单体电池的模型建立单独拿出来，而且这还有个从个体到整合之后的模型转换问题。   Battery Modeling Requirements • Performance Model – Cell-level equivalent circuit model in MATLAB which provides: 1. voltage and current response based on power demand or input, 2. response over the full operating temperature range 3. thermal response during simulated usage 4. degradation behavior as a function of simulated usage/life • Electrochemical Model – determine electrode-level behavior and performance limitations over the full operating range (temperature, pulse current and time,ΔSOC, and cell life) – Verification testing is required to validate the model • Life Model – A cell life (cycle and calendar) model must be developed in order to determine to effects of usage and stand time – The life model must consider the fundamental cell performance deterioration mechanism – Verification testing lab analysis is required to validate the model   而最为头疼的安全问题，从FMEA（ FTA / FMEA Safety Analysis Model for Lithium-ion Batteries ）到Abuse以UL的表格   大概就知道需要干的事情，真的是很多……      我们走的快，不是别人不会走，只是我们略过了其实不能略过的路，而且有些地方还尽搞些事情来自我安慰，真正从设计、生产和测试等角度来看，应该做的事情其实是补功课。