Thermal Fault-Tolerance in Lithium-ion Battery Cells: A Barrier Function based Input-To-State Safety Framework
Thermal Fault-Tolerance in Lithium-ion Battery Cells: A Barrier Function based Input-To-State Safety Framework
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DOI：
10.1109/ccta49430.2022.9966084
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发表时间：
2022-08
期刊：
影响因子：
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通讯作者：
Shashank Vyas;Tanushree Roy;Satadru Dey
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文献类型：
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作者：
Shashank Vyas;Tanushree Roy;Satadru Dey
锂离子电池的需求和使用的不断增加使得有必要在其安全性方面做出广泛的努力。虽然许多研究都集中在更安全的电池材料和机械设计上，但开发基于控制的安全策略也是实现安全的关键方面。大多数现有的电池控制策略都集中在最佳充电性能上，在热安全控制技术上存在差距。具体地，在热故障下的电池单元的热管理仍然显著地未被探索。鉴于此，我们提出了一种容错控制算法，可以实际确保锂离子电池的安全存在的热异常。在该算法中，我们制定了一个控制律，既保证了锂离子电池的热安全性和稳定性。具体而言，我们结合联合收割机集总参数热模型和常微分方程（ODE）为基础的实用输入状态安全技术制定的热控制问题。随后，我们利用控制障碍函数和线性稳定性准则来设计控制器增益。最后，我们提出了仿真案例研究，以验证所提出的控制算法的有效性。
Ever increasing demand and use of Lithium-ion batteries has made it necessary to put extensive efforts in their safety. While a lot of research is focused on safer battery materials and mechanical designs, developing control-based safety strategies is also a key aspect to enable safety. Most of the existing battery control strategies focus on optimal charging performance, leaving a gap on thermal safety control techniques. Specifically, thermal management of battery cells under thermal faults remains significantly under-explored. In light of this, we propose a fault-tolerant control algorithm which can practically ensure safety of Li-ion batteries in presence of thermal anomalies. In this algorithm, we formulate a control law which guarantees both the thermal safety and stability of Li-ion batteries. Specifically, we combine lumped parameter thermal model and Ordinary Differential Equation (ODE)-based practical input-to-state safety technique to formulate the thermal control problem. Subsequently, we utilize control barrier function and linear stability criteria to design the controller gains. Finally, we present simulation case studies to validate the efficacy of the proposed control algorithm.