Home >
Community >
Energy throughput over lifetime calculation of Li-Ion Battery cell ?
Upvote
29
Downvote
+ Cycling
+ Degradation
+ Battery
Posted by
Mario Festus
Energy throughput over lifetime calculation of Li-Ion Battery cell ?
Hello,
So for one cycle, the energy throughput in the battery is the integral of the Voltage of capacity function. It's very close to the nominal voltage but since your have many cycles then it's not enough as approximation. Also, it's negative in discharge and positive in charge or the opposite, or you can consider it always positive if you the direction of the energy is not important to you.
So for one cycle, the energy throughput in the battery is the integral of the Voltage of capacity function. It's very close to the nominal voltage but since your have many cycles then it's not enough as approximation. Also, it's negative in discharge and positive in charge or the opposite, or you can consider it always positive if you the direction of the energy is not important to you.
1. If you measure the capacity value after each RPT, doesn't it give the delta capacity already? What do you mean by 'capacity degradation is not considered'? 2. Dont you make a SOC correction after each RPT cycles?
1. If you measure the capacity value after each RPT, doesn't it give the delta capacity already? What do you mean by 'capacity degradation is not considered'? 2. Dont you make a SOC correction after each RPT cycles?
Hello,
So for one cycle, the energy throughput in the battery is the integral of the Voltage of capacity function. It's very close to the nominal voltage but since your have many cycles then it's not enough as approximation. Also, it's negative in discharge and positive in charge or the opposite, or you can consider it always positive if you the direction of the energy is not important to you.
Best Regards,
Hello,
So for one cycle, the energy throughput in the battery is the integral of the Voltage of capacity function. It's very close to the nominal voltage but since your have many cycles then it's not enough as approximation. Also, it's negative in discharge and positive in charge or the opposite, or you can consider it always positive if you the direction of the energy is not important to you.
Best Regards,
More
VOTE
Hi,
Not sure if I understood your question right.
1. If you measure the capacity value after each RPT, doesn't it give the delta capacity already? What do you mean by 'capacity degradation is not considered'?
2. Dont you make a SOC correction after each RPT cycles?
Hi,
Not sure if I understood your question right.
1. If you measure the capacity value after each RPT, doesn't it give the delta capacity already? What do you mean by 'capacity degradation is not considered'?
2. Dont you make a SOC correction after each RPT cycles?
More
VOTE