Patent ID: 11959315
Assignee: MAGNA CLOSURES INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC E  H  Y | IPC E  H

Claim 0:
1. A latch assembly for a closure panel of a motor vehicle, comprising:
at least one actuation group being movable to latch and unlatch the closure panel using power from a main power source during a normal operating condition;
a first backup energy source selectively coupled to the at least one actuation group and configured to store energy during the normal operating condition and to supply the energy to the at least one actuation group during a failure operating condition different from the normal operating condition;
a second backup energy source selectively coupled to the first backup energy source and configured to supply energy to the first backup energy source during the failure operating condition; and
an electronic control circuit having a latch controller coupled to the at least one actuation group and to the first backup energy source and the second backup energy source, and configured to:
detect whether there is one of the normal operating condition and the failure operating condition; and
charge the first backup energy source using energy from the second backup energy source based on the detection of the failure operating condition, wherein the first backup energy source is charged to maintain the voltage of the first backup energy source within a predetermined voltage range.