Temperature management is one of the major factors influencing performance, safety, and cycle life.
1. Prevent Overheating
Overheating can be caused by:
- Poor ventilation
- High ambient temperatures
- Heat from nearby equipment
- Excessive charge/discharge current
Daily Prevention
✔ Maintain airflow around the battery
✔ Leave at least 10–15 cm of space around racks
✔ Check if cooling fans function properly
✔ Keep the ESS room under 30°C if possible
2. Prevent Charging at Low Temperature
Charging below 0°C can cause lithium plating, permanently damaging cells.
Solutions
✔ Use a battery with low-temperature charging protection
✔ Install a cabinet heater
✔ Insulate outdoor battery boxes
✔ Schedule charging during daytime when warmer
3. Ensure Temperature Uniformity Between Cells
Large temperature differences between cells indicate internal imbalance.
Daily Tips
✔ Compare cell temperature readings
✔ Check airflow consistency
✔ Verify BMS sensors are working
✔ Avoid stacking batteries too tightly
4. Improve Airflow and Cooling Systems
If your ESS uses forced cooling:
✔ Clean fan filters
✔ Check for blocked vents
✔ Inspect heat dissipation plates
✔ Ensure cold air enters and hot air exits smoothly
5. Avoid Long-term Storage in Hot Areas
Long-term heat exposure affects electrolyte stability.
Recommendations
- Store batteries at 50–70% SOC
- Keep in a 15–25°C environment
- Avoid storing near windows, boiler rooms, or rooftops
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