Battery Pack Voltage Window Control for Brake Overheating

The patent dynamically adjusts the battery pack's operating voltage limits based on real-time brake temperature conditions. When service brake temperature exceeds a threshold, the system transitions from default voltage limits to extended voltage limits, enabling increased regenerative braking capacity to reduce brake temperature. This dynamic adaptation resolves the contradiction between maintaining safe battery operation and preventing brake overheating.

The system changes the operating parameters of the battery pack by extending the predetermined voltage limits under specific conditions. By allowing the battery to operate at higher voltage levels when brake temperature is elevated, the system increases energy storage capacity during regenerative braking, thereby reducing the thermal load on service brakes while maintaining acceptable battery safety margins.

The system establishes extended voltage limits in advance as a contingency measure, but only activates them when brake temperature thresholds are exceeded. This preliminary preparation allows the system to quickly switch to higher capacity operation when needed, while maintaining standard operating windows during normal conditions to preserve battery reliability and longevity.

The patent converts the potential harm of operating the battery outside standard voltage windows into a beneficial solution. By deliberately allowing extended voltage operation under controlled conditions (when brakes are overheating), the system transforms what would normally be an unsafe operating state into a useful mechanism for reducing brake temperature and improving overall vehicle safety.