This paper proposes a new approach to estimate the state of charge of Li-ion batteries, the hybrid-type intelligent state of charge observer. The proposed observer has the combination structure of a sliding mode observer and a fuzzy PI observer and adopts the expert system based on Takagi–Sugeno fuzzy reasoning to switch those two nonlinear observers. This scheme embodies the advantages; the fast dynamic response by the sliding-mode observer and the chattering attenuation in steady state by the fuzzy PI observer. Some comparative simulation verifies and demonstrates the performance and the superiority of the proposed observer.

中文翻译：

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锂离子电池混合型智能荷电状态观测器

本文提出了一种估计锂离子电池荷电状态的新方法，即混合型智能荷电状态观测器。所提出的观测器具有滑模观测器和模糊PI观测器的组合结构，并采用基于Takagi-Sugeno模糊推理的专家系统来切换这两个非线性观测器。本方案体现了优点；滑模观测器的快速动态响应和模糊 PI 观测器在稳态下的颤振衰减。一些比较模拟验证并证明了所提出的观测器的性能和优越性。