Micro-macroscopic coupled modeling of batteries and fuel cells - II. Application to nickel-cadmium and nickel-metal hydride cells
Micro-macroscopic coupled modeling of batteries and fuel cells - II. Application to nickel-cadmium and nickel-metal hydride cells
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DOI：
10.1149/1.1838821
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发表时间：
1998-10-01
影响因子：
3.9
通讯作者：
Liaw, BY
中科院分区：
文献类型：
--
作者：
Gu, WB;Wang, CY;Liaw, BY
配套论文中开发的微观-宏观耦合模型用于预测镍镉（Ni-Cd）和镍氢（Ni-MH）电池的放电和充电行为。该模型将活性材料中质子或氢扩散和电子传导等重要的微观现象集成到物种和电荷转移的宏观计算中。提出了全 Ni-Cd 电池和单 MH 电极的仿真结果，并根据文献中的伪二维数值模型进行了验证。与之前的结果非常吻合，当前的模型系列计算效率更高，特别适合复杂测试条件的模拟，例如电动汽车的动态应力测试和脉冲充电。此外，还提出了全镍氢电池的数学模型，并对放电和再充电进行了样本模拟，同时考虑了氧气的产生和复合。这些气体反应代表了电动汽车应用中电池过度充电的重要机制。
The micro-macroscopic coupled model developed in a companion paper is applied to predict the discharge and charge behaviors of nickel-cadmium (Ni-Cd) and nickel-metal hydride (Ni-MH) cells. The model integrates important microscopic phenomena such as proton or hydrogen diffusion and conduction of electrons in active materials into the macroscopic calculations of species and charge transfer. Simulation results for a full Ni-Cd cell and single MH electrode are presented and validated against the pseudo two-dimensional numerical model in the literature. In good agreement with the previous results, the present family of models is computationally more efficient and is particularly suitable for simulations of complex test conditions, such as the dynamic stress test and pulse charging for electric vehicles. In addition, a mathematical model for full Ni-MH cells is presented and sample simulations are performed for discharge and recharge with oxygen generation and recombination taken into account. These gas reactions represent an important mechanism for battery overcharge in the electric vehicle application.