Methods, apparatus, systems and articles of manufacture are described for a wireless battery system. An example apparatus includes at least one memory, instructions, and processor circuitry to at least one of instantiate or execute the instructions to identify a first battery node to transmit an uplink command during a first superframe interval, transmit a downlink command to the first battery node and a second battery node, the first battery node to switch in the first superframe interval from a receive state to a transmit state in response to the downlink command, the first battery node to transmit the uplink command in the transmit state, and receive the uplink command from the first battery node in the first superframe interval.

A wireless power receiving device includes: a wireless power receiving coil, an AC-DC circuit, a capacitor buck circuit, and a battery, wherein the capacitor buck circuit includes at least two capacitors and a switch; an output terminal of the wireless power receiving coil is connected to an input terminal of the AC-DC circuit, and an output terminal of the AC-DC circuit is connected to an input terminal of the capacitor buck circuit, and an output terminal of the capacitor buck circuit is connected to the battery; in a case that the switch is in a first connection state, the at least two capacitors are in a series state and store energy; and in a case that the switch is in a second connection state, the at least two capacitors are in a parallel state and release energy.

A wireless power receiving device includes: a wireless power receiving coil, an AC-DC circuit, a capacitor buck circuit, and a battery, wherein the capacitor buck circuit includes at least two capacitors and a switch; an output terminal of the wireless power receiving coil is connected to an input terminal of the AC-DC circuit, and an output terminal of the AC-DC circuit is connected to an input terminal of the capacitor buck circuit, and an output terminal of the capacitor buck circuit is connected to the battery; in a case that the switch is in a first connection state, the at least two capacitors are in a series state and store energy; and in a case that the switch is in a second connection state, the at least two capacitors are in a parallel state and release energy.

The present disclosure provides step-down rectifier circuit includes a rectifier module, a charge pump module, a filter unit, and a control unit. The rectifier module includes a first bridge arm unit connected to in-phase output terminal of an alternating current signal and a second bridge arm unit connected to out-of-phase output terminal of the alternating current signal. The charge pump module includes a first voltage converter unit and a second voltage converter unit in parallel. The control unit is configured to output a first pulse width modulation signal to control the on and off of the switch transistors in the rectifier module, and output a second pulse width modulation signal to control the on and off of the switch transistors in the charge pump module, such that an operating frequency of the charge pump module is a positive integer multiple of the frequency of the alternating current signal.

The present disclosure provides step-down rectifier circuit includes a rectifier module, a charge pump module, a filter unit, and a control unit. The rectifier module includes a first bridge arm unit connected to in-phase output terminal of an alternating current signal and a second bridge arm unit connected to out-of-phase output terminal of the alternating current signal. The charge pump module includes a first voltage converter unit and a second voltage converter unit in parallel. The control unit is configured to output a first pulse width modulation signal to control the on and off of the switch transistors in the rectifier module, and output a second pulse width modulation signal to control the on and off of the switch transistors in the charge pump module, such that an operating frequency of the charge pump module is a positive integer multiple of the frequency of the alternating current signal.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface provided at a charging surface of the wireless charging device, and a controller. The controller may be configured to provide a charging current to at least one active transmitting coil in the charging surface, measure voltages across three or more transmitting coils in the charging surface and determine that the chargeable device is in motion across the charging surface based on changes in the voltages measured across the three or more transmitting coils. The charging current may cause a wireless transfer of power through the at least one active transmitting coil to a chargeable device located on the charging surface.

Systems, methods and apparatus for wireless charging are disclosed. A charging device has a plurality of charging cells provided on a charging surface provided at a charging surface of the wireless charging device, and a controller. The controller may be configured to provide a charging current to at least one active transmitting coil in the charging surface, measure voltages across three or more transmitting coils in the charging surface and determine that the chargeable device is in motion across the charging surface based on changes in the voltages measured across the three or more transmitting coils. The charging current may cause a wireless transfer of power through the at least one active transmitting coil to a chargeable device located on the charging surface.

There is described an electric power base (100) comprising: a casing (105), a wireless transmitter (110) of electric energy placed in the casing (105), and an interface surface (120) placed external to the casing (105), at said wireless transmitter (110), which is adapted to receive in contact a device (500) to be powered, characterized in that said interface surface (120) is made available by at least one microsuction body (125).

There is described an electric power base (100) comprising: a casing (105), a wireless transmitter (110) of electric energy placed in the casing (105), and an interface surface (120) placed external to the casing (105), at said wireless transmitter (110), which is adapted to receive in contact a device (500) to be powered, characterized in that said interface surface (120) is made available by at least one microsuction body (125).

A wireless charging positioning device and method, a receiver and a storage medium are provided. The device is applied to a transmitter and includes: at least one group of detection coils and at least one processor. Each group of detection coils includes N detection coils, detection regions covered by different detection coils are at least partially different, detection coil is configured to transmit a detection signal and receive a feedback signal sent by a receiver, and N is a positive integer greater than or equal to 2. The at least one processor is connected with the N detection coils and configured to determine a position region of the receiver at the transmitter according to the feedback signals received by the N detection coils.