The present disclosure provides a charging method, device, and system. The charging device includes a voltage regulation circuit, and can charge a charged device through voltage step-down or voltage step-up. In addition, the charging device and a charged device can transfer statuses of a circuit and a battery through a change of a switch status, so that the charging device can regulate a charging voltage and/or a charging current based on the statuses of the circuit and the battery.

Example lighting systems may include a group charging station and a lighting device. Example group charging stations may include a plurality of power devices operable to power the lighting device, the plurality of power devices comprising a first power device and a second power device, the first power device comprising a first plurality of electrical contacts, the second power device comprising a second plurality of electrical contacts, and a group charging platform operable to concurrently charge the plurality of power devices.

A contact system for electrically connecting a device having an arcuate wall with a docking station having a linear wall. The contact system includes a first contact positioned in the device and a second contact positioned in the docking station. The first contact has a contoured contact engagement surface with a contoured contact engagement surface arc which is essentially the same as an arcuate wall arc of the arcuate wall of the device. The second contact has a resilient contact arm which engages the contoured contact engagement surface of the first contact when the device is inserted into the docking station. The engagement of the resilient contact arm of the second contact and the contoured contact engagement surface of the first contact provides a positive electrical connection between the first contact and the second contact and compensates for angular misalignment between the device with the docking station.

The invention enables efficient wireless power transfer, and charging of devices and batteries, in a manner that allows freedom of placement of devices or batteries in one or multiple dimensions. Provided is a base unit for wireless power transfer or charging through a time varying magnetic field. The unit typically includes a magnetic material or layer that guides magnetic flux generated by a charger coil as to create a preferential path for returning magnetic flux from a receiver coil in one or multiple dimensions. The receiver may include a magnetic core having a magnetic permeability exceeding 1 with copper Litz wire around a ferrite core. With power receivers proximate to the base unit, the base unit coil may inductively generate a current in receiver coils or receivers associated with the power receivers. Uni-directionally or bi-directionally wireless communication protocols include NFC, Bluetooth, WiFi, and etc. control and optimize power transfer therebetween.

The present disclosure relates to a wirelessly rechargeable in-ear hearing device, a charger for a wirelessly rechargeable in-ear hearing device, and a system comprising a wirelessly rechargeable in-ear hearing device and a charger for the wirelessly rechargeable in-ear hearing device.

A charging case for an intraoral device includes a storage compartment surrounded by a peripheral wall extending between a top and a base. A charging output supported by the peripheral wall faces into the storage compartment to transfer energy to the intraoral device contactlessly by induction. Internal locating formations form a pocket for receiving and engaging a protruding sensor part of the intraoral device, holding a receiving input of the intraoral device in close proximity and alignment with the charging output when the case is closed.

The container for charging electronic devices is a storage device. The container for charging electronic devices is configured for use with one or more personal tools. The container for charging electronic devices forms a protected space that contains the one or more personal tools. The container for charging electronic devices incorporates a containment structure and a control circuit. The control circuit attaches to the containment structure. The containment space forms the protected space. The control circuit is an electric circuit. The control circuit illuminates the protected space. The control circuit further provides a locking structure that locks the containment structure in the closed position. The control circuit further provides a source of electric energy used for recharging the batteries of the one or more personal tools while the one or more personal tools are stored in the protected space.

A charger for charging a rechargeable energy source of a personal care device has a housing having a charging region for positioning the personal care device, a circuit for performing a charging procedure of the rechargeable energy source of the personal care device, a motion sensor for detecting a motion of at least a portion of the charger, preferably wherein the charger comprises a motion enhancer, a controller coupled with the charging circuit and the motion sensor. The controller is arranged to activate the charging circuit when the controller receives a motion signal from the motion sensor indicating a placement of the personal care device in the charging region and/or to deactivate the charging circuit when the controller receives a motion signal from the motion sensor indicating a removal of the personal care device from the charging region.

A wireless charging technique for a smart tool holder, each tool base incorporating a corresponding smart tool holder having a power module providing power to an electronic module within the smart tool holder, the power module comprising a rechargeable battery, and the rechargeable battery being electrically connected to a wireless charging receiver. Each charging pad corresponds to a tool base, and the charging pad contains a wireless charging transmitter. Upon incorporation of the smart tool handle into the tool magazine, the wireless charging transmitter of the charging pad wirelessly charges the rechargeable battery in response to the wireless charging receiver in the smart tool handle on the tool base. It is not necessary to remove the smart tool holder and place it in a fixed charging cradle for charging, so that the smart tool holder can be charged while it is in the tool magazine of the machining machine.

A wireless charging device is disclosed for communicating with and charging wirelessly chargeable batteries for powering surgical instruments. The wireless charging device comprises a housing defining wireless charging bays each for receiving and charging one of the batteries, power antennas for wirelessly charging a battery received by an associated wireless charging bay, and communication antennas for wirelessly communicating with the battery received by the associated wireless charging bay. The wireless charging device ceases communication between a first of the communication antennas associated with a first of the wireless charging bays and a first battery received by the first of the wireless charging bays and, responsive to ceasing communication between the first of the communication antennas and the first battery, controls a second of the communication antennas associated with a second of the wireless charging bays to communicate with a second battery received by the second of the wireless charging bays.