Furthermore, voltage differences can occur due to varying self-discharge rates of the batteries, as battery modules are often stored for extended periods during the manufacturing process. It is essential to inspect the balance and capacity of the batteries before assembling the battery pack.
The table shows capacity measurements of an electric motorcycle battery pack used for six months, discharging from 4.15V to 3.0V. This allows for easy determination of the impact of DC resistance on battery capacity. In practical use, the battery is unusable if one of its cells stops discharging due to poor capacity, even if the remaining cells still have power.
To address these types of problems, a tool is needed that can diagnose and repair cellular imbalances. Chroma Inc. uses the ATS 8700 as a platform to launch a battery maintenance and diagnostic solution that can not only resolve battery imbalance issues but also offers efficient and comprehensive testing capabilities.
1. Complete the automatic test program with a single button press.
The system can automatically complete the adjustment based on the cell voltage set by the user without any manual operation other than waiting for the test results.
2. Test reports.
All test conditions and results can be generated in a report so that defective cells can be easily identified. The user can define and customize the report format as desired.
3. Exclusive test items
: • DC resistance measurement
• Individual cell capacity test
• Battery cell balance test.
The DC resistance measurement/capacity test helps in understanding the condition of the battery cell, while the balance test restores the voltage of an unbalanced cell. This function can also be used to create unbalanced cell conditions for voltage imbalance testing (such as UL2271).
The Chroma 8700 system can quickly diagnose the condition of battery cells and significantly extend battery life. It is used for routine maintenance and for inspecting battery packs before assembly. It can provide significant benefits to battery manufacturers by improving quality and offering end users greater protection. See battery testing systems here.
