The present disclosure generally relates to techniques for a displaying a user interface including a visual indication that an electronic device is in a protective charging mode. While the electronic device is in a charging configuration with respect to an external power source, an energy-storage component of the electronic device is charged with power supplied by the external power source. After charging the energy-storage component, a user interface is displayed. When charging of the energy-storage component is stopped before reaching a full charge level, the user interface includes a visual indication that the electronic device is in a protective charging mode in which charging of the energy-storage component is delayed based on predetermined criteria.

Disclosed is an operating method for a wirelessly communicating electronic device, including the following steps: a) acquisition of a radio-frequency frame representative of at least one data item intended to be transmitted by the radio-frequency transmitter in a radio-frequency message; b) determination of the amount of power available in the power storage; c) determination of the length of the radio-frequency message to be transmitted; d) determination of transmission parameters of the radio-frequency transmitter, according to the values determined for the length of the message and the amount of power available in the power storage; e) and transmission of the message by the transmitter, using the determined transmission parameters.

A wireless charging method can be applied to a wireless charging device and include: acquiring a charging parameter of a target electronic device, in which the charging parameter includes a current temperature parameter of the target electronic device; and dynamically adjusting a magnetic levitation distance between the wireless charging device and the target electronic device according to the temperature parameter.

A method of operating a portable power station including a plurality of battery modules and a battery management system operably connected to the plurality of battery modules, includes supplying at least one first battery module of the plurality of battery modules with a charging current generated from mains electricity operably connected to an AC input connection of the portable power station using the battery management system, and electrically connecting at least one second battery module of the plurality of battery modules to a load to supply the load with an operating current using the battery management system. The method further includes electrically disconnecting at least one third battery module of the plurality of battery modules from the charging current and the load to manage thermally the at least one third battery module using the battery management system.

A device for depassivation of an energy storage device having an anode, a cathode and a core with an electrolyte, the device including: a first switch configured to provide a positive input voltage to the anode; a second switch configured to provide a negative input voltage to the anode; and a controller configured to: detect that a first predetermined event related to a buildup of passivation has occurred with regard to the energy storage device; switch between a positive input voltage and a negative input voltage provided to the anode at a frequency sufficient to depassivate the anode; discontinue the switching when a second predetermined event related to passivation has occurred.

According to an embodiment, a management system manages a power transmitter capable of wirelessly transmitting power to a power receiver of a movable object. The management system includes a detection unit configured to detect a state of the power transmitter, a storage unit configured to store a relationship between the state of the power transmitter and a power transmission level indicating possibility of power transmission of the power transmitter, an identification unit configured to identify the power transmission level corresponding to the state detected by the detection unit, and an output unit configured to output the identified power transmission level before the power transmitter starts transmitting power. The power transmission level includes at least an unavailable level indicating that power transmission is impossible, a limitation level indicating that power transmission is possible under a predetermined limitation, and a normal level indicating that power transmission is possible without limitation.

A linear charger includes a constant current charging circuit and a thermal regulation circuit. The constant current charging circuit is arranged to generate a charging current, and includes a first transconductance amplifier, wherein the first transconductance amplifier has a positive terminal, a negative terminal, and an output terminal. The thermal regulation circuit is coupled to the output terminal and the negative terminal of the first transconductance amplifier, and is arranged to generate and modulate a thermal regulation current and an amplifier reference voltage with temperature, and transmit the thermal regulation current and the amplifier reference voltage to the output terminal and the negative terminal of the first transconductance amplifier, respectively.

A battery charging control method applicable to a vehicle electrical system that includes a current control unit including a semiconductor device. Two ends of the current control unit are connected to a battery and a charging power supply, respectively. The method includes controlling, when a temperature of the battery is below a preset temperature, the current control unit to be in a first state in which the semiconductor device is reversely connected in a circuit, sending a first charging request including a first charging current required to heat the battery to the preset temperature, controlling, when the temperature of the battery reaches the preset temperature, the current control unit to be in a second state in which the semiconductor device is disconnected from the circuit or forwardly connected in the circuit, and sending a second charging request including a second charging current at which the battery is charged.

An electrical storage system includes a main battery, an auxiliary battery, a bidirectional DC-DC converter and a controller. The bidirectional DC-DC converter is provided between the auxiliary battery and a power supply path from the main battery to a driving motor. The bidirectional DC-DC converter steps down an output voltage from the power supply path to the auxiliary battery, and steps up an output voltage from the auxiliary battery to the power supply path. The controller controls charging and discharging of the auxiliary battery. The controller, when an allowable output power of the main battery decreases and an electric power becomes insufficient for a required vehicle output, supplies an electric power to the power supply path by discharging the auxiliary battery by using the bidirectional DC-DC converter. The controller, when an allowable input power of the main battery decreases and a regenerated electric power generated by the driving motor is not entirely charged into the main battery, charges part of the regenerated electric power into the auxiliary battery by using the bidirectional DC-DC converter.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.