Window regulator or lock`s electrical actuator supply device for motor vehicle, has voltage converter delivering regulated voltage to supply actuator, electrical switch unit to select either battery or electric energy storage units

摘要

The device has electrochemical super-capacitors or capacitors (4), and a voltage converter (6) regulating an output voltage of a battery (1) and delivering a regulated output voltage (Us) for supplying an electrical actuator (2). An electrical switch unit (8) compares the voltages from the battery and electric energy storage units (5) to select either battery or units (5) when the output voltage attains a preset threshold voltage value. The energy reserve units are constituted of multiple electric batteries such as lithium batteries or nickel metal hydride type electrochemical batteries.