It includes the combined resistance of components such as battery materials, electrodes, and electrolytes (find the top 10 lithium ion battery electrolyte manufacturer). Lower internal resistance means better current transmission efficiency, while higher internal resistance will lead to energy loss and heating problems.
Battery internal resistance refers to the resistance of the battery to the flow of current. It includes the combined resistance of components such as battery materials, electrodes, and electrolytes (find the top 10 lithium ion battery electrolyte manufacturer).
Reasonable measurement and optimization of internal resistance are essential to improving battery performance and service life. The internal resistance of lithium batteries directly affects their charge and discharge performance, energy conversion efficiency, and service life.
The internal resistance is calculated by applying a large current (40A-80A) for a short time (2-3 seconds) and measuring the voltage across the battery. This method has high accuracy (the error can be controlled within 0.1%), but it is easily affected by polarization and may damage the battery, so it is suitable for large-capacity batteries.
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