These are some key factors that may cause e-bike battery fires:
Overcharging – Charging lithium-ion batteries beyond their capacity can lead to overheating and potential fire. Use the recommended charger and don’t leave batteries charging unattended.
Damage – Physical damage to e-bike batteries, such as from an accident, can expose internal materials to air causing thermal runaway. Inspect batteries regularly for damage.
Cheap low-quality cells – Poorly made or low-grade battery cells are more prone to defects and flaws that can lead to shorts and fires. Purchase reputable brand-name batteries.
High discharge rates – Drawing a lot of current quickly from batteries can overheat them. Don’t demand maximum power consistently from the motor.
Overheating – Heat is the enemy of lithium-ion batteries. Don’t leave them exposed to direct sunlight or inside hot vehicles.
What BMS do to prevent e-bike battery fires:
- Preventing overcharging of the battery pack by cutting off current flow when the charge is full.
- Balancing individual cell voltages and temperatures so no single cell is overcharged.
- Cutting off discharge current if unsafe low voltages or high temperatures are detected.
- Monitoring for shorts between wires and damaged wiring connections.
- Sending diagnostic data and warning signals if unsafe conditions arise.
What you need to do is follow the manufacturer’s recommendations for charging, storage, and use can help ensure safe operation. Consider upgrading to battery packs with more advanced BMS features for added protection and performing regular inspections and maintenance is also wise.
