A recovery electrical vehicle supply equipment (EVSE) may provide a low voltage via the proximity pilot pin in order to wake the battery management system (BMS) and provide contactor power to the necessary contactors. In an example, the BMS may wake to enable the recovery EVSE to provide high voltage direct current (HVDC) power to the energy storage system (ESS). Once the ESS is charged enough to self-sustain contactors and a charging session, the BMS may then enable the on-board low voltage (LV) system to start a charging session.

Energy storage systems for charging an electronic device and methods of operating the same are disclosed. The energy storage system includes an AC bus, a DC bus, a plurality of batteries, a plurality of breakers, a plurality of inverters, and a controller operatively coupled with the batteries and the breakers. The method includes calculating, by the controller, an amount of power necessary to charge the electronic device; operating, by the controller, the breakers such that the batteries of a discharging station is configured to discharge through a charging station; and charging the electronic device using the batteries.

An apparatus includes of a first earbud and a second earbud, each including an interface chip and a case. The case includes a case interface chip configured to communicate data with, and transfer power to, interface chips of the first earbud and the second earbud. The case also includes a housing to provide enclosures for the first earbud and the second earbud. The case interface chip is mated with interface chips of the first earbud and the second earbud when the first earbud and the second earbud are inserted in the housing, and wherein the case, the first earbud, and the second earbud are configured to operate at a multiple, different bias voltage levels.

A wireless power transfer system may include a power transmitting device for transferring wireless power to a power receiving device. The power transmitting device can transmit signals to the power receiving device using multiple different inverter switching frequencies. The power transmitting device can establish communications with and transfer wireless power to the power receiving device using a first inverter frequency and can attempt to establish communications with and transfer wireless power to the power receiving device using a second inverter different than the first inverter frequency to optimize charging wattage.

A system for charging a battery comprising a first switch operably coupled with a power supply. An inductive element, which may be a part of filter, is in operable communication with the switch. The system includes a processor in communication with the switch and in communication with a model of the inductive element. The processor is configured to execute instructions to control the switch to generate a sequence of pulses at the first inductive element to produce a shaped charge waveform responsive to running the model to generate the shaped charge waveform.

A wireless power receiver (PRx) can include regulator control circuitry that monitors a rectifier output voltage and/or current and reduces a power level of the regulator if the monitored voltage or current is above a threshold to maintain stability of a wireless power transfer link. A PRx can include control circuitry that can, responsive to a need for an increased wireless power transfer, compute a power feedback parameter in accordance with a first equation or, responsive to a need for a decreased wireless power transfer, compute the power feedback parameter in accordance with a second equation, and send a communication packet including the power feedback parameter to a wireless power transmitter. The wireless power receiver control circuitry can further send the communication packet according to a first or second communications loading control policy that can temporarily reduce output power during transmission.

A charging system is provided. The charging system includes a charging device including an electrical input for receiving electrical energy, at least one output for outputting electrical energy, and a communication interface; and a charger controller programmed to a) receive a plurality of charging parameters; b) determine a charging rate of an electronic device connected to the at least one output of the charging device; c) instruct the charging device to provide electrical energy through the output to the electronic device; d) determine a current state of charge of the electronic device; e) adjust the charging rate based on the current state of charge and the plurality of charging parameters; and f) instruct the charging device to adjust the charging rate for the electrical energy being provided to the electronic device.

A charging station includes a charging station body including a housing and a bus interface disposed on the housing. The charging station further includes a gateway device with a wired connection and/or a wireless connection to the charging station body. The charging station performs data interaction with a power tool through the gateway device and/or the bus interface; and the charging station performs data interaction with a cloud server through the gateway device.

A method of operating a wearable monitoring system in which a tablet or smartphone-sized device directly charges a wristband without separate cords or swappable batteries. The method includes prompting docking based on a low wristband battery or a scheduled charging window, maintaining the tablet's full usability while docked, and charging via inductive power transfer (without exposed contacts) or via conductive interfaces (pins or surface pads). Retention may be magnetic, mechanical, or combinations thereof. The method improves charging compliance, ingress protection, tamper resistance and safety.

A wireless charger for a mobile device includes a coil arranged adjacent to a charging surface. A power conversion module is configured to selectively supply power from a power source to the coil to wirelessly charge the mobile device. A temperature sensor is configured to sense a temperature at the charging surface of the wireless charger. A material sensor is configured to sense a material of a cover of the mobile. A communications and control module is configured to control wireless charging of the mobile device based on the sensed temperature and a temperature range selected in response to the sensed material of the cover of the mobile device.