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.

A latch assembly for a closure system having first and second closure members each movable between open and closed positions and method of operation are provided. The assembly includes a primary latch mechanism that has a primary actuation group to control actuation of the first closure member. The latch assembly also includes a secondary latch mechanism that has a secondary actuation group operable to control actuation of the second closure member. A controller unit is coupled to the primary and secondary actuation groups and determines which of the primary actuation group and the secondary actuation group to actuate and controls actuation of at least one of the primary actuation group and the secondary actuation group accordingly. The primary and secondary latch mechanisms, primary and secondary actuation groups, and controller unit are all integrated into the housing.

A motor control system for a closure latch assembly is provided and includes a power release motor operatively coupled to a power release gear of the closure latch assembly. A plurality of relays are coupled between one of a first motor terminal and a second motor terminal and one of a voltage supply and an electrical ground to provide one of a first motor current flow to drive the power release motor in a first direction and a second motor current flow to drive the power release motor in a second direction. An electronic control unit is coupled to the plurality of relays and configured to command the plurality of relays to provide the first motor current flow in one of a power release mode and a release mode and the second motor current flow in one of a reset mode and an unlock mode.

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.

A control arrangement for operating a motor vehicle locking system, the locking system has an electric drive with an electric drive motor, during normal operation, the electric drive is supplied with a normal supply voltage to provide a motorized locking, the control arrangement has an energy storage arrangement with a capacitor, the energy storage arrangement, in an emergency mode, provides an emergency electrical supply voltage for the electric drive, and includes a boost stage connected downstream of the energy storage unit for generating the emergency supply voltage, the boost stage boosts an electrical input voltage at an input of the boost stage to an electrical output voltage at an output of the boost stage. The energy storage arrangement, to generate the emergency supply voltage, has a first boost stage connected downstream for generating the emergency supply voltage and a second boost stage connected downstream of the first boost stage.

A control arrangement for operating a motor vehicle locking system, the locking system has an electric drive with an electric drive motor, during normal operation, the electric drive is supplied with a normal supply voltage to provide a motorized locking, the control arrangement has an energy storage arrangement with a capacitor, the energy storage arrangement, in an emergency mode, provides an emergency electrical supply voltage for the electric drive, and includes a boost stage connected downstream of the energy storage unit for generating the emergency supply voltage, the boost stage boosts an electrical input voltage at an input of the boost stage to an electrical output voltage at an output of the boost stage. The energy storage arrangement, to generate the emergency supply voltage, has a first boost stage connected downstream for generating the emergency supply voltage and a second boost stage connected downstream of the first boost stage.

A method of operating a motor vehicle locking system including an electric drive for providing a locking function, a central battery of the motor vehicle supplies electrical energy to the electric drive during normal operation, an auxiliary energy supply supplies electrical energy to the central battery and is arranged in a closure arrangement of the motor vehicle, the closure element is configured to assume an open and a closed position. Access to the auxiliary energy supply is blocked by the closure element in the closed position and cleared in the open position. The central battery is monitored by a control unit to check whether an emergency operation criterion is satisfied. The closure element is locked in the closed position by means of a lock unit, and when the emergency operation criterion is satisfied, the lock unit is actuated by the control unit to unlock the closure element.

A method of operating a motor vehicle locking system including an electric drive for providing a locking function, a central battery of the motor vehicle supplies electrical energy to the electric drive during normal operation, an auxiliary energy supply supplies electrical energy to the central battery and is arranged in a closure arrangement of the motor vehicle, the closure element is configured to assume an open and a closed position. Access to the auxiliary energy supply is blocked by the closure element in the closed position and cleared in the open position. The central battery is monitored by a control unit to check whether an emergency operation criterion is satisfied. The closure element is locked in the closed position by means of a lock unit, and when the emergency operation criterion is satisfied, the lock unit is actuated by the control unit to unlock the closure element.

The vehicle power supply apparatus includes: a drive power supply that supplies electric power to a motor for generating drive power; an auxiliary power supply that supplies electric power to a motor controller and door lock controllers; and a backup power supply. A control method for the vehicle power supply apparatus includes: discharging the in-vehicle equipment by using the electric power that is supplied from the backup power supply when it is determined that a vehicle has collided with an obstacle; and operating the door lock controllers by using the electric power that is supplied from the backup power supply after a lapse of a specified time period since initiation timing of the discharging step so as to unlock doors.