Research on Toyota Solid-State Battery Technology Based on Patent Analysis

Dong Haomin1,2, Wang Junlei3, Xin Minghua3

1. General Research and Development Institute, China FAW Corporation Limited, Changchun 130013; 2. State Key （ Laboratory of Comprehensive Technology on Automobile Vibration and Noise & Safety Control, Changchun 130013; 3. China Automotive Technology and Research Center Co., Ltd., Tianjin 300300）

Abstract By using the patent analysis method, this paper analyzes Toyota’s patent technology layout of solid- state【 】battery and the key research and development direction from the patent application situation, patent technology composition, then it sorts through Toyota’s key technology points of solid- state electrolyte technology, solid- state battery cell technology and solid- state battery cell stacking technology. The paper also analyzes Toyota’s technology development status of solidstate battery from the macro and micro perspectives. Key words: Solid- state battery, Electrolyte, Battery cell, Stack, Patent analysis, Technology layout