When a nickel cadmium battery is installed, which device monitors battery temperature?

When a nickel cadmium battery is installed, which device monitors battery temperature?

• A. Battery voltage monitor
• B. Cabin pressure sensor
• C. Overvoltage monitor
• D. Battery temperature monitoring system

Answer: (D)

Monitoring battery temperature is crucial because nickel-cadmium packs can overheat during charging or discharge, potentially leading to damage or fire. A dedicated battery temperature monitoring system uses a sensor embedded in or on the pack to continuously track temperature and signal when limits are approached. This enables safe charging, proper fault indication, and, if needed, automatic protection to prevent thermal runaway. The other devices aren’t focused on temperature: a voltage monitor checks the battery’s electrical potential to assess charge state; a cabin pressure sensor tracks cabin air pressure; an overvoltage monitor looks for excessive voltage levels. None of these measure or protect against temperature rise, so they don’t serve the same safety role as the battery temperature monitoring system.

Monitoring battery temperature is crucial because nickel-cadmium packs can overheat during charging or discharge, potentially leading to damage or fire. A dedicated battery temperature monitoring system uses a sensor embedded in or on the pack to continuously track temperature and signal when limits are approached. This enables safe charging, proper fault indication, and, if needed, automatic protection to prevent thermal runaway.

The other devices aren’t focused on temperature: a voltage monitor checks the battery’s electrical potential to assess charge state; a cabin pressure sensor tracks cabin air pressure; an overvoltage monitor looks for excessive voltage levels. None of these measure or protect against temperature rise, so they don’t serve the same safety role as the battery temperature monitoring system.