![]() ![]() Clarification of this confusion is one of the primary objectives of this paper. ![]() There is much confusion and uncertainty in the literature concerning the useable power capability of batteries and ultracapacitors (electrochemical capacitors) for various applications. The results show that the simulated and experimental values are close to each other, and the HPPC test method, the calculation method of battery pulse characteristics parameters and the experimental results can be used for battery characteristics evaluation or mathematical modeling. The measured internal resistance and OCV values of lithium batteries at different temperatures and state of charge (SOC) were calculated, and the variation law of battery pulse characteristics was analyzed. In this paper, the internal resistance and OCV characteristics of square lithium-ion battery were studied experimentally using the hybrid pulse power characteristic (HPPC) test method. Therefore, it is important to study the internal resistance and open-circuit voltage (OCV) variation during charging and discharging for the accurate estimation of power battery heat generation. Meanwhile, the study of lithium battery pulse discharge characteristics can provide data support for the heat source calculation required for its temperature field simulation. ![]() In the design of electric vehicles, to ensure that the battery works in a reasonable voltage and temperature range, the analysis of its pulse characteristics and accurate thermal-production model are the basis for the control strategy of the whole vehicle. Lithium-ion battery has been widely used in electric vehicles due to various excellent properties, however, temperature affects its working performance. ![]()
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