ELECTRONICS
measured, which leaves batteries open to undetected thermal events.” “Even though cells may appear
identical, there are subtle variations in manufacturing quality, tolerances, and operating conditions that can lead to diff erent rates of aging. Without temperature monitoring, a cell experiencing degradation and overheating could go unnoticed,” he adds. “If venting is not addressed and the pack remains under load, the cell will continue to heat up. This can lead to the breakdown of the membrane between the cathode and anode, resulting in an internal short circuit and potentially a fi re, depending on the battery chemistry involved.” Cell Guard, a matchbox-sized
CAN-based sensor that can be easily integrated into almost any battery system via its 5-pin automotive-rated Molex Nano-Fit Power connector, addresses these challenges by
introducing a new approach to battery safety. Working as a complementary monitor alongside the BMS, the non-contact sensor is fi tted inside the battery pack where it has the ability to measure ambient conditions
A single faulty cell within a battery pack can escalate into a major safety hazard
and analyses the gases emitted and pressure changes from hot cells. By complementing existing battery management systems, Cell Guard
provides comprehensive cell coverage and early detection of potential hazards. “Cell Guard’s early detection
capabilities, focused on the venting stage, off er the best chance to prevent thermal runaway, a phenomenon in which overheating cells trigger a cascade reaction,” Holdsworth continues. “As temperature and pressure increase, there is a risk of cell venting, releasing gaseous electrolyte. This is where Cell Guard plays a crucial role by detecting the signs of cell venting. Early detection allows for actions such as unloading the pack to prevent further heating. By promptly identifying cell venting, Cell Guard allows for timely intervention, to prevent further escalation of potential hazards.” With the increasing prevalence
of EVs, the need for an integrated solution became evident, he adds, emphasising that, “Cell Guard’s unique combination of features sets it apart from other products in the market, making it the go-to solution for comprehensive battery safety.”
Cell Guard measures ambient conditions and analyses the gases emitted and pressure changes from hot cells
ENSURING OPERATION IN OPTIMUM CONDITIONS Cell Guard goes beyond the detection of cell venting, off ering a
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