The invention provides a processing circuit with multiple power supply ports and an electronic device. The processing circuit includes: N power supply ports; a first-level power supply; N middle transmission modules, connected between the first-level power supply and the corresponding power supply port, wherein at least one of which is used as a second-level power supply; and a charging protocol control module. The charging protocol control module is respectively connected to the first-level power supply, the N power supply ports, and the N middle transmission modules. The second-level power supply operates in a switching power mode or a pass through mode. In the pass through mode, the output voltage of the second-level power supply matches the input voltage received by the first-level power supply, and the output voltage of the second-level power supply is not adjustable.

A hearing assistance device is described that includes: a behind-ear portion including a rechargeable energy source and a processor. The hearing assistance device further includes an in-ear portion including a processor, a microphone, and a speaker. The hearing assistant device further includes a tether configured to transmit electrical energy from the rechargeable energy source to the in-ear portion and communicatively couple the processor of the behind-ear portion with the processor of the in-ear portion. processor of the behind-ear portion and the processor of the in-ear portion communicate via the tether using a first communication protocol and the processor of the behind-ear portion and a processor of an external computing device communicate outside the tether using a second communication protocol that is different than or same as the first communication protocol.

A backup power supply comprising a removably attachable battery that is configured to provide a backup power supply to an electrical appliance is disclosed herein. An electrical housing is configured to be mounted on the electrical appliance. A removably attachable battery is mounted on the electrical housing, which comprises a circuitry that includes a sensing device that is configured to detect primary power supply from a main power supply to the electrical appliance. A transfer switch is configured to select one of primary power supply provided by the main power supply or the backup power supply provided by removably attachable battery based on the sensing device deciding what is appropriate. A control circuitry is configured to control the transfer switch to engage the removably attachable battery in the circuitry when the sensing device fails to detect the primary power supply from the main power supply to the electrical appliance.

A supplying-end module for an induction type power supply system includes a supplying-end coil, a first driver, a second driver and a signal detector. The first driver, coupled to the supplying-end coil, is used for driving the supplying-end coil to send electric power. The second driver, coupled to the supplying-end coil, is used for controlling the supplying-end coil to output a detection signal. The signal detector, coupled to the supplying-end coil, is used for detecting a reflection signal corresponding to the detection signal.

A charging system for a terminal, a charge method, and a power adapter are provided. The charging system includes a power adapter and a terminal. The power adapter includes a switch circuit, a second rectifying circuit, a first charging interface, and a control circuit. The control circuit modulates a duty cycle of a control signal based on voltage sampling value or current sampling value sampled by the sampling circuit so that voltage in a third pulsating waveform output by the second rectifying circuit satisfies a charging requirement. The terminal includes a battery and a second charging interface connected to the battery. The second charging interface applies the voltage in the third pulsating waveform to the battery when the second charging interface is connected to the first charging interface, so that the pulsating waveform output by the power adapter is directly applied on the battery.

An adapter for charging control include a power converting unit, a sample and hold unit, a current acquisition and control unit. The power converting unit is configured to convert an input AC to obtain an output voltage and an output current of the adapter, and the output current of the adapter is a current of a first pulsating waveform. The sample and hold unit is connected to the power converting unit, and is configured to sample the current of the first pulsating waveform when the sample and hold unit is in a sampling state and hold a peak value of the current of the first pulsating waveform when the sample and hold unit is in a holding state. The current acquisition and control unit is configured to determine whether the sample and hold unit is in the holding state.

A portable case for storing hearing assistance devices is described that includes at least one retention structure configured to retain at least part of a hearing assistance device, one or more communication units configured to exchange information between the portable case and one or more external devices, and at least one processor. The processor is configured to: detect when the at least one retention structure shares an electrical connection with the at least part of the hearing assistance device that is retained by the at least one retention structure; and responsive to receiving data, from the hearing assistance device, via the electrical connection, while the at least part of the hearing assistance device is retained by the at least one retention structure, cause the one or more communication units to communicate with exchange the information data between the portable case and the one or more external devices.

An electric power source system includes an electric power generator, a voltage conversion device, a battery, an electrical load, and a control device. The voltage conversion device converts a direct current voltage. The battery is electrically connected to the electric power generator through the voltage conversion device. The electrical load is electrically connected to the electric power generator in a parallel relationship with the battery without passing through the voltage conversion device. The control device is configured to charge the battery through the voltage conversion device based on regenerative electric power in a regenerative state in which the regenerative electric power is generated by the electric power generator. the control device is configured to increase an electric power consumption of the electrical load further when the control device detects an event that impedes the charging in the regenerative state than when the control device does not detect the event.

An adapter (10) and a charging control method, the adapter (10) comprising: a power conversion unit (11), used for converting an inputted alternating current so as to obtain an output voltage and an output current of the adapter (10), the output current of the adapter (10) being an alternating current or a pulsed direct current; a voltage holding unit (12), an input end of the voltage holding unit (12) being connected to the power conversion unit (11), the voltage holding unit (12) being used for obtaining an input voltage having a pulsed waveform from the power conversion unit (11) and converting the input voltage having the pulsed waveform into a target voltage, an output end of the voltage holding unit (12) being connected to a device in the adapter (10), the target voltage being used to power the device in the adapter (10), a peak value of the target voltage being between the lowest operating voltage and the highest operating voltage of the device. The adapter (10) reduces lithium separation in batteries, and increases the service life of batteries.

An adapter, a charging control method and a charging system are provided. The adapter includes: a power converter, configured to convert input alternating current to obtain an output voltage and an output current of the adapter, the output current of the adapter being a current with a first pulsating waveform; a sampling and holding unit, coupled to the power converter, and configured to sample the current with the first pulsating waveform in a sampling state, and to hold a peak value of the current in a holding state; a current sampling controller, coupled to the sampling and holding unit, and configured to determine whether the sampling and holding unit is in the holding state, and to sample the peak value of the current with the first pulsating waveform held by the sampling and holding unit when the sampling and holding unit is in the holding unit.