Patents Analysis on Electric Vehicle Power Battery Technology in China

Power battery is the source of electric vehicle, which directly affects the performance and use cost. Through patent retrieval and patent analysis conclusion is palpable: China's power battery technology has been growing maturity gradually in recent ten years; framework of power battery patent layout has taken shape, namely, stress has been put on the fundamental battery technology and battery-based applications is getting some attention; automobile firms, battery manufacturers, foreign-funded new-energy companies and universities are main competitors in power battery field. To break bottle-neck technology it takes not only the nation to establish industrial planning but to select appropriate technical route and strengthen cooperation between the competitors.