Kilowatt Labs SIRIUS CAPACITOR MODULE - Page 33

Sirius Capacitor Module – User Manual Model Number - 3550-48-B-1.7C-M-SD-A-G
This manual is subject to change without notice and at the sole discretion of Kilowatt Labs, Inc.
Kilowatt Labs, Inc. | www.kilowattlabs.com
33
At open circuit voltage the measured supercapacitor voltage is:





By putting the values, equation (3) becomes:



 


󰇛󰇜
The formulas listed above hold the principles of ESR test and calculation:
We modified the circuit by including the terminal resistance as mentioned below:
Where,







Test Equipment:
• A WRL48V80A27cd DC Charger Motor is used to charge the Module with 70A current.
• A WRL-FDY 48/20 Battery Discharge Tester is used to discharge the Module with 70A current.
Test Temperature:
• Room temperature 23
o
C ±2
o
C.
Test Current:
• 1C(70A) constant current value for charge and discharge.
Test Process:
Step 1: Rest (open circuit)
• Record test time, test current and test voltage at the start of the test (t1, I1, V1).
Step 2: Charge
• Charge device to its rated voltage at specified current.
• Record test time, test current and test voltage at the end of the rest (t2, I2, V2).
Step 3: Rest (open circuit)