An electrical latch for a closure system of a motor vehicle and method of operating are provided. The electrical latch includes a latching mechanism having a pawl and ratchet, a cinching mechanism having a cinching lever, and an electric actuator mechanism for actuating at least the cinching lever. The electrical latch further includes a control unit powered by a main power source and having a control circuit controlling operation of the actuator mechanism to affect the position of the cinch lever, and a backup energy source providing power to the control circuit and the actuator mechanism in the event a fault condition is experienced by the main power source. The electrical latch is configured to return the cinching lever to a home uncinched position in response to switching of power from the main power source to the backup energy source.

A method of operating an entry system of a motor vehicle includes monitoring a battery voltage and the entry system continuously using a control circuit of the latch assembly in a non-emergency mode. Power is provided to the control circuit in the event of a loss of power from a main power source using a backup energy source of the control circuit. The method includes transitioning to an emergency mode in response to determining loss of power from the main power source or failure of the component of the entry system. An actuation group associated with the latch assembly is operated with the control circuit using power from the backup energy source of the control circuit in response to determining that actuation from a plurality of pins of a mechanical emergency switch assembly indicates a command from a user to unlatch the closure member in the emergency mode.

A method of operating an entry system of a motor vehicle includes monitoring a battery voltage and the entry system continuously using a control circuit of the latch assembly in a non-emergency mode. Power is provided to the control circuit in the event of a loss of power from a main power source using a backup energy source of the control circuit. The method includes transitioning to an emergency mode in response to determining loss of power from the main power source or failure of the component of the entry system. An actuation group associated with the latch assembly is operated with the control circuit using power from the backup energy source of the control circuit in response to determining that actuation from a plurality of pins of a mechanical emergency switch assembly indicates a command from a user to unlatch the closure member in the emergency mode.

The present application generally relates to battery powered door unlock mechanisms. More specifically, the application teaches an unlock system including a door unlock mechanism, a capacitive circuit having a first time response, a resistive-capacitive circuit having a second time response wherein the second time response is longer than the first time response, a battery for coupling a battery charge to the capacitive circuit and the resistive capacitive circuit in response to a door unlock authentication signal, and a relay for coupling a first charge from the capacitive circuit to the door unlock mechanism in response to the relay being activated by a second charge from the resistive-capacitive circuit after the second time response.

The present application generally relates to battery powered door unlock mechanisms. More specifically, the application teaches an unlock system including a door unlock mechanism, a capacitive circuit having a first time response, a resistive-capacitive circuit having a second time response wherein the second time response is longer than the first time response, a battery for coupling a battery charge to the capacitive circuit and the resistive capacitive circuit in response to a door unlock authentication signal, and a relay for coupling a first charge from the capacitive circuit to the door unlock mechanism in response to the relay being activated by a second charge from the resistive-capacitive circuit after the second time response.

A closure latch assembly and method for cinching a closure panel from a partially closed position to a fully closed position without pinching an object between the closure panel and a structural portion of a motor vehicle are provided. The latch assembly has a latch cinch mechanism including a cinch lever operably moveable from a cinch start position to a cinch stop position to cause a cinch link to move a ratchet from a secondary striker capture position to a primary striker capture position. A power-operated cinch actuator receives a first signal to move the cinch lever from the cinch start position to the cinch stop position and receives a second signal, in response to an object detected between the closure panel and the structural portion, to stop moving the cinch lever from the cinch start position toward the cinch stop position.

A closure latch assembly and method for cinching a closure panel from a partially closed position to a fully closed position without pinching an object between the closure panel and a structural portion of a motor vehicle are provided. The latch assembly has a latch cinch mechanism including a cinch lever operably moveable from a cinch start position to a cinch stop position to cause a cinch link to move a ratchet from a secondary striker capture position to a primary striker capture position. A power-operated cinch actuator receives a first signal to move the cinch lever from the cinch start position to the cinch stop position and receives a second signal, in response to an object detected between the closure panel and the structural portion, to stop moving the cinch lever from the cinch start position toward the cinch stop position.

A vehicular exterior door handle assembly includes a base portion disposed at a door handle region of a vehicle door. A handle portion is movable relative to the base portion between a recessed position and a deployed position. An actuator includes a motor that is electrically operable to move the handle portion between the recessed position and the deployed position. The actuator includes a position indicating element that indicates at least one position of an output shaft of the motor. Responsive to an input signal, the actuator moves the handle portion between the recessed position and the deployed position. While the actuator moves the handle portion, the position indicating element indicates that the output shaft arrives at one of the at least one positions and the actuator depowers the motor.

A system of controlling backup power of a lithium iron phosphate battery for a vehicle contains: the lithium iron phosphate (LiFePO.sub.4) battery module, a boost module, and a supercapacitor module which are parallelly connected with an electric control device of the vehicle. A first switch electrically is connected with a negative electrode of the electric control device and a negative electrode of the supercapacitor module of the vehicle, a second switch is electrically connected with a negative input electrode and a negative output electrode of the boost module, and a third switch is electrically connected with a positive electrode of the LiFePO.sub.4 battery module and a positive input electrode of the boost module. The system further contains a backup control module including a microprocessor configured to direct, control, order, and manage a detection unit, a controlling unit, and a Bluetooth module.

The present disclosure relates to a closure latch for a vehicle door, and more particularly to a closure latch for a vehicle door equipped with a passive entry feature. To this end, the present disclosure relates to the use of a bidirectional power release mechanism operable in a first mode to release a latch mechanism under normal operating conditions and which is operable in a second mode to release the latch mechanism under emergency operating conditions.