Patent ID: 7642755

Claim:
A energy management system for controlling the energy from a power source, including a super capacitor, to a load, comprising: a comparative circuit for monitoring a primary voltage from the power source, the comparative circuit capable of detecting a normal voltage range and a low voltage range along a power bus; a contactor switch in series between the power source and a load; the switch configured to operate in both a normal mode and a low voltage mode, wherein the switch is closed in a normal mode to allow current to pass directly to the load from the power source on the power bus and the switch is open in the low voltage mode to prevent direct flow of current to the load from the power source; a DC-DC boost converter connected to the primary voltage, the boost converter in communication with a control signal from the comparative circuit and the boost converter is electrically connected to a load, wherein the control signal inhibits the operation of the DC-DC boost converter in the normal voltage mode and enables the operation of the DC-DC boost converter in the low voltage mode; and wherein the low voltage mode is caused by draining the super capacitor below a threshold level.