Heat effects in batteries and measurements by electrochemical calorimetry

Sources and magnitude of heat effects in batteries are analyzed in this article. The evolving heat, as a result of the inefficiency of operation, is wasted energy at the expense of the chemically stored energy of the battery. At high rates of battery operation, the heat can be even commensurate with the obtained electrical energy. Measurement and analysis of the heat effects by electrochemical calorimetry play an important role in advanced battery development, diagnostics and application. An electrochemical calorimeter measures heat effects and electrochemical parameters simultaneously while any standard or research testing procedure is being executed. The electrochemical calorimetry and mathematical thermal modeling together are the important means of thermal management design