Pajda
10 kW
Test eqiupment:
- NEWARE BTS-4000 test system with T-type thermocoupler module
- The cells are connected to the tester by Micro-TIG welded Cu strips with a cross section of 6 mm2 with separate sense wires for 4W connection
- Tested in room with relatively stable temperature RT: 20 ±3 °C
Test settings:
- The CC-CV method is used for charging, but the charging process is terminated by a time here, for example 4C charging is terminated after 15 min, 3C after 20 min, .., 1C after 60 min. The consequence of using this method is that the cell is never charged to 100% SoC due to the internal resistance of the cell. The higher the charging C-rate the lower the SoC is achieved.
- For discharging, the standard CC method (3C discharge-rate for all tests) is used, with common termination voltage of 2.5 V
Chart below shows dT = Tend - Tstart (The difference between the cell body temperature at the beginning of the charging which is RT: 20 °C with up to 3 °C tolerance and the body temperature reached at the end of the charging). As a Temperature sensor is used NEWARE T-type miniature (0.2 mm) thermocouple, attached with kapton tape
CC-CV charging: Voltage & Current & Capacity charts
New:
After 1000 cycles:
- NEWARE BTS-4000 test system with T-type thermocoupler module
- The cells are connected to the tester by Micro-TIG welded Cu strips with a cross section of 6 mm2 with separate sense wires for 4W connection
- Tested in room with relatively stable temperature RT: 20 ±3 °C
Test settings:
- The CC-CV method is used for charging, but the charging process is terminated by a time here, for example 4C charging is terminated after 15 min, 3C after 20 min, .., 1C after 60 min. The consequence of using this method is that the cell is never charged to 100% SoC due to the internal resistance of the cell. The higher the charging C-rate the lower the SoC is achieved.
- For discharging, the standard CC method (3C discharge-rate for all tests) is used, with common termination voltage of 2.5 V
Chart below shows dT = Tend - Tstart (The difference between the cell body temperature at the beginning of the charging which is RT: 20 °C with up to 3 °C tolerance and the body temperature reached at the end of the charging). As a Temperature sensor is used NEWARE T-type miniature (0.2 mm) thermocouple, attached with kapton tape
CC-CV charging: Voltage & Current & Capacity charts
New:
After 1000 cycles:
Last edited:
