The Chroma 63600 series of electronic loads offers voltage ranges of 6V/16V/80V with an accuracy of 0.025% ± 0.01% FE to measure minute changes in a battery cell. Each electronic load module can simulate loads up to 80A at low voltage and up to 400A when five modules are used in parallel. These electronic loads are characterized by high-speed measurement, capturing voltage and current every 2µs with a maximum of 4096 measurements to digitize the waveform.
The user can conduct the test using the DCR Measurement software with the 63600 series, selecting the impedance measurement mode, editing the battery discharge process, and automatically acquiring cell impedance measurements under different power levels and generating a report with the results.
The discharge waveform is also irregular in electric and hybrid vehicle batteries. Batteries of the same type but with different capacities vary in their discharge rate, resulting in different vehicle ranges. Using the actual current waveform is necessary to perform battery discharge testing and evaluate performance, serving as a basis for selecting the optimal material or BMS design.
The dynamic discharge current waveform simulation software provided by Chroma can read previously recorded waveform data in Excel format and use an A/D converter to control the electronic charging and discharge of the battery at the same current profile. This allows both automotive and battery manufacturers to simulate irregular battery discharges and perform repetitive laboratory tests instead of conducting costly road tests each time battery cell durability testing is required.
Chroma also offers charge and discharge test solutions comprised of DC electronic sources and loads for conducting simulated battery pack tests. These systems allow R&D and quality departments to verify capacity, discharge performance (obtaining the CV curve under different discharge rates), and durability or cycle life. The charge/discharge test software supplied with these systems includes functions for editing test sequences, cycles, and stop conditions. All voltage, current, and power data are recorded in a file for later analysis.
