Example systems and methods are described that wirelessly charge a rechargeable battery associated with a lock. In one implementation, a rechargeable battery is electrically coupled to an electronic lock module associated with a door corresponding to a door frame. An electronic control module associated with the door frame and physically separate from the electronic lock module generates a wireless charging link between the electronic control module and the electronic lock module. The electronic control module transmits a charging signal to the electronic lock module via the wireless charging link, and the electronic lock module uses this charging signal to charge the rechargeable battery. The implementation also includes a lock associated with the door that can be locked or unlocked by the electronic lock module.

The present disclosure relates an electronic locking system. In certain embodiments, the electronic locking system includes a passive electronic lock, active electronic key and passive electronic key. The passive electronic key stores a passive digital key, and the active electronic key stores an active digital key. Each of passive and active electronic keys includes a communication channel and an electronic key power supply port. The active electronic key includes electrical power source providing electrical power supply to active electronic key, passive electronic lock and passive electronic key through passive electronic lock to operate passive electronic lock. When both active and passive electronic keys are inserted into respective electronic keyholes of passive electronic lock, both active and passive digital keys are transmitted to passive electronic lock, passive electronic lock can be locked and unlocked only when both active and passive digital keys received match prestored active and passive digital keys respectively.

An embodiment of an electronic access control system includes an electronic access apparatus, an electronic lock, and an access control administration program. The electronic access apparatus provides a wireless power signal and a wireless digital data signal to the electronic lock. The wireless power signal can be the only source of power used by the electronic lock to actuate an electronic lock mechanism. In some embodiments, the lock mechanism includes a piezoelectric latch.

According to an aspect of the invention, an electronic lock is conceived, being adapted to harvest energy from a radio frequency (RF) connection established between a mobile device and said electronic lock, further being adapted to use the harvested energy for processing an authorization token received via said RF connection from the mobile device, and further being adapted to use the harvested energy for controlling an unlocking switch in dependence on a result of said processing.

The invention relates to an electronic key (32) having at least two contacts (324, 325, 326) for the transmission of data and/or energy to an electronic lock (16). In accordance with the invention, the housing (321) of the electronic key (32) comprises an input device (33) for the entry of an authorization code (36). The invention also relates to an electronic closure system with an electronic key (32) and an electronic lock (16) as well as to a method for secure acquisition of an access authorization or for secure delivery of a key to at least one user (22) by means of an electronic lock (16) and at least one electronic key (32) carried by the user (22).

The invention relates to an energy supply circuit of electric components, in particular for a motor vehicle, having an accumulator, wherein a discharge monitoring circuit monitors the energy stored in the accumulator. If the energy stored in the accumulator falls below a threshold value, the discharge monitoring circuit switches off the energy supply at least of individual components, in particular of all components.

A door lock uses a mobile device as an input interface. The door lock includes a latch device mounted to a door, an outer operating device mounted to an outer face of the door, and an inner operating device mounted to an inner face of the door. The outer operating device includes a contact-type connection interface for contact-type connection with the mobile device. After the mobile device is in electrical connection with the outer operating device, an input device of the mobile device is used to input a to-be-identified identification information to the door lock, and the door lock identifies whether the to-be-identified identification information matches authenticated identification information for subsequent unlocking operation or remaining in a locked state.

A method and an apparatus for wireless charging of batteries of electronic accessing devices. A method includes establishing a first connection between a battery of an accessing device and a receiver and a second connection between the accessing device and a transmitter, the transmitter and the receiver being associated with each other. The method further includes determining a charging status of the battery of the accessing device and communicating the charging status of the battery to the transmitter on determining that the charging status of the battery reaches below a predefined threshold value via the second connection. The method also includes charging the battery of the accessing device with power from the receiver using the first connection, wherein the receiver receives the power from the transmitter over the air.

An energizable electromagnet of a door locking system is affixed to the door or the door frame for electromagnetically attracting an armature affixed to the other. A power control circuit is configured to selectively energize the electromagnet using a pulse-width modulated current cycle wherein two levels of magnetic force may be selectively applied to the system. A door position sensor is configured to provide a first communication signal to the power control circuit when the door is in a closed position. A second communication signal is provided when the door is not in the closed position. The electromagnet is energized at the lower level of magnetic force when the power control circuit receives the first communication signal and at the higher level of magnetic force only when an unauthorized attempt to open the door is initiated.

It is presented a power converter for transferring electric power provided on an input terminal to an energy storage element. The power converter comprises: an inductor; a switch connected to selectively control a connection between the inductor and the input terminal; and a comparator, wherein an output of the comparator controls the switch, a first input of the comparator is supplied with a voltage being proportional to a voltage of the input terminal, and a second input of the comparator is supplied with a voltage being proportional to a current from the input terminal; wherein the energy storage element is connected to a point between the inductor and the switch.