Pilot cells are the battery cells used to monitor the performance and health of larger battery systems. They are used to provide crucial information about the state of charge, the state of health, and the overall condition of the battery system.
In larger battery systems, it can be challenging to monitor each individual cell and ensure that they are all performing optimally. This is where pilot cells come into play. By strategically placing pilot cells within the larger battery system, battery manufacturers can monitor the performance of the larger battery system as a whole and detect any issues that may arise.
For example, in a lithium-ion battery system, a pilot cell can be used to monitor the voltage and temperature of the battery system. If any cells within the larger system begin to degrade or overheat, the pilot cell can detect this and trigger an alarm to alert the user to take action. This can help to extend the overall lifespan of the battery system and prevent any potential safety hazards.
Another benefit of using pilot cells is the ability to accurately determine the state of charge of the larger battery system. With a pilot cell, battery manufacturers can determine the state of charge of the larger battery system in real-time, which can be used to optimize battery performance and extend its lifespan.