摘要
制定合理的热管理策略,是全钒液流电池长时、高效运行的重要保障.分析了全钒液流电池中电化学反应热、过电位热、交叉反应热以及旁路电流热的特点,介绍了不同场景下的热管理方案,对比了运行参数、主动散热和被动散热三种热管理方式的优缺点,分析了全钒液流电池运行时电流、电解液流动状态和环境温度对电池产热的影响,阐述了主动散热和被动散热研究现状,对待机状态时电堆产热特点和热管理方案进行了介绍.
Abstract
The formulation of reasonable thermal management strategies is an important guarantee for the long-term and efficient operation of all-vanadium flow batteries.In this paper,the characteristics of heat generated by electrochemical reactions,overpotential,crossover reactions,and shunt current in vanadium flow batteries are analyzed.Additionally,thermal management strategies under different scenarios are introduced.A comparison is made between three thermal management approaches,namely operating parameters,active heat dissipation and passive heat dissipation.Furthermore,the effects of current intensity,electrolyte flow state,and ambient temperature on heat generation in vanadium flow batteries are examined.The research status of active and passive heat dissipation is described as well.Finally,the characteristics of heat generation and the scheme of thermal management in standby state are introduced.
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