![]() The comparison results show that estimator 2(based on the incremental OCV test) has higher tracking accuracy and is more robust against varied loading conditions and different initial values of SOC than estimator 1 (based on the lowcurrent OCV test) with regard to ambient temperature. ![]() In addition, four dynamic tests are presented, one for estimator parameter identification and the other three for estimator performance evaluation. We conducted an experiment where these two OCV tests are run at three different temperatures and based on which, two SOC estimators are compared and evaluated in terms of tracking accuracy, convergence time, and robustness. A widely used technique for SOC estimation is based on online inference of battery open circuit voltage (OCV). Low-current OCV and Incremental-current OCV tests are two common methods to observe the OCV-SOC relationship, which is an important element of the SOC estimation technique. Table of Contents INR 18650-20R BatteryÄĞattery state of charge (SOC) estimation is a crucial function of battery management systems (BMSs), since accurate estimated SOC is critical to ensure the safety and reliability of electric vehicles. If you have questions or are interested to contribute your data to the battery data collective, please contact Prof. Use of this data for publication purposes should include references to the CALCE article(s) that describe the experiments conducted to generating the data ( Suggested citation). A description of each battery and each test is presented below. The data from these tests can be used for battery state estimation, remaining useful life prediction, accelerated battery degradation modeling, and reliability analysis. Battery form factors include cylindrical, pouch, and prismatic, and the chemistries include LCO, LFP, and NMC. We provide open access to our experimental test data on lithium-ion batteries, which includes continuous full and partial cycling, storage, dynamic driving profiles, open circuit voltage measurements, and impedance measurements. The CALCE battery team is open to collaborate with research groups and companies around the world. Overview Research Facilities Team Data News Publications Newsletter Contact
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