Battery protection system

Details Battery protection system Battery protection system

1991-04-02

1993-04-06

DeBoer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

320 13, 307 107, H02H 324

Patent

active

052008770

ABSTRACT:
A vehicle storage battery protection system that senses a drop in battery voltage to a level at which the battery still retains sufficient power to start the vehicle. If the sensed voltage remains at or below this level for a time greater than the time normally required to start the vehicle, the battery is disconnected from the load and a hysteresis signal is provided to prevent a reconnection as the battery voltage begins to rise after the load has been disconnected. The load is automatically reconnected to the battery upon operation of the ignition switch to restart the vehicle. A reset circuit provides a small test voltage to the disconnected load, and senses a voltage drop caused by operation of the ignition switch to start the vehicle. This sensed voltage drop is detected and causes a main switch to reconnect the battery to the loads.

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