Battery Control Logic for Ignition-Independent Power Loss Suppression

The battery diagnosis device is activated periodically based on detection of predetermined signals (current, voltage, communication signals) rather than continuous operation. The control unit activates the diagnosis function when activation conditions are met and stops it when conditions are not met, creating a periodic monitoring pattern that balances reliability with energy conservation.

The battery diagnosis device monitors its own operating conditions through detection units that detect current, voltage, and communication signals from the vehicle system. Based on these self-detected conditions, the device autonomously determines when to activate or stop the diagnosis function, enabling it to self-regulate its power consumption while maintaining necessary monitoring capability.

The system uses feedback from detection units that continuously monitor predetermined signals (outflow current, power supply line voltage, communication signals) to determine when activation conditions are met. This feedback mechanism ensures the diagnosis function is activated at appropriate times to detect battery issues while remaining stopped during periods when monitoring is less critical, thus balancing power conservation with reliable detection.

The detection units continuously monitor predetermined signals in advance to determine when activation conditions are satisfied. By detecting these signals beforehand and activating the diagnosis function proactively when conditions indicate potential battery issues, the system ensures reliable detection capability is available when needed while conserving power during normal operation.