Hi,
I'm investigating SOC-OCV for Li-ion battery for SOC estimation.
I have checked a lot of papers in this matter.
I got a bit confused on the U_ocv calculation part. In general, the definition of open circuit voltage is such that the battery is not connected to any load and has reached a stable state voltage, and at that time we can measure the open circuit voltage of the battery.
But in practice, when the battery is under operation, for example, the electric vehicle is switch on, it is not possible to measure the open circuit voltage. Because the battery is connected to the load (traction motor).
In most papers, we should also have the equations used U_ocv (please see the figure below). Well, when the EV is switch on and the battery is connected to the load, is it correct to get this parameter?
I think I had a little trouble understanding this part. Anybody has comments?
I look forward to hearing from your feedback.
I'm investigating SOC-OCV for Li-ion battery for SOC estimation.
I have checked a lot of papers in this matter.
I got a bit confused on the U_ocv calculation part. In general, the definition of open circuit voltage is such that the battery is not connected to any load and has reached a stable state voltage, and at that time we can measure the open circuit voltage of the battery.
But in practice, when the battery is under operation, for example, the electric vehicle is switch on, it is not possible to measure the open circuit voltage. Because the battery is connected to the load (traction motor).
In most papers, we should also have the equations used U_ocv (please see the figure below). Well, when the EV is switch on and the battery is connected to the load, is it correct to get this parameter?
I think I had a little trouble understanding this part. Anybody has comments?
I look forward to hearing from your feedback.