A computing device configured to removably attach a component comprises a housing comprising first and second device electromagnets. A wireless charging transmitting antenna is between the electromagnets. Instructions are executable by a processor to synchronize a first device current through the first device electromagnet with a first component current through a first component electromagnet of the component to attract the electromagnets, and to synchronize a second device current through the second device electromagnet with a second component current through a second component electromagnet of the component to attract the electromagnets.

A battery system for supplying power to a load, the battery system comprising a plurality of batteries each including a battery unit and a management unit that manages a deterioration state of the battery unit, and a control unit that controls charging/discharging of each of the plurality of batteries, wherein the plurality of batteries are different from each other in deterioration states of battery units, and the control unit determines a distribution ratio representing a ratio of an amount of power to be supplied to the load by each of the plurality of batteries with respect to an amount of power to be supplied to the load, in accordance with the deterioration state of the battery unit managed by the management unit is provided.

A method for adjusting an anode overvoltage of a lithium-ion battery (310) is described. A method for improving a capacity state of health of a lithium-ion battery (310) is described. A vehicle having at least one lithium-ion battery (310) whose anode overvoltage is adjusted using the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or whose capacity state of health is improved using the method for improving the capacity state of health of the lithium-ion battery (310) is described. A fleet management system that is designed to perform the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or the method for improving the capacity state of health of the lithium-ion battery (310) is described.

A rechargeable battery jump starting device having a highly conductive electrical pathway from a rechargeable battery of the device to a vehicle battery being jump started. The highly conductive pathway can be provided by a highly electrically conductive frame connecting one or more batteries of the rechargeable battery jump starting device to battery clamps of the rechargeable battery jump starting device.

An electronic device may include: a resonance circuit which comprises a battery, a coil and a capacitor, and receives power wirelessly; a rectifier which rectifies AC power, provided from the resonance circuit, to DC power; a DC/DC converter which converts and outputs the DC power provided from the rectifier; a charger which charges the battery by using the converted power provided from the DC/DC converter; a first OVP circuit which selectively connects the coil to the capacitor; a second OVP circuit which is connected in parallel to the first OVP circuit; a detection circuit which detects a rectified voltage; a control circuit; and a communication circuit, wherein the control circuit, on the basis that the detected rectified voltage is equal to or greater than a first threshold voltage, controls the first OVP circuit so as to be in an off state so that the coil is not connected to the capacitor, and on the basis that the detected rectified voltage is less than a second threshold voltage, controls the first OVP circuit so that the first OVP circuit is switched from the off state to an on state so that the coil is connected to the capacitor, wherein the second threshold voltage may be smaller than the first threshold voltage.

A method for coordinated control of wind-storage joint primary frequency regulation, considering rotational speed and SOC, within the field of power system frequency regulation, includes: determining if the grid frequency deviation exceeds the primary frequency regulation dead zone; if exceeded, calculating the system's frequency regulation demand power based on the deviation; assessing the available frequency regulation power from wind turbines using their rotational speed; formulating a frequency regulation strategy based on the demand and available power; and executing the strategy. This approach effectively addresses the delay caused by wind speed variations, which hinders wind turbines from promptly adjusting output power to meet primary frequency regulation demands. The method enhances the stability of power system operation.

A charging system includes a charging input interface, an inductor, a first switch, a second switch, a first voltage acquisition circuit, and a control circuit. The charging input interface is connected to the inductor, which is connected to the first switch and the second switch. The second switch is configured for electrical connection with an energy storage power supply. The first voltage acquisition circuit is connected to the second switch and configured to detect the first voltage output by the charging system in real time. The control circuit cyclically controls the switch on/off time of the first switch based on the first voltage. During the charging process of the charging system, when the first voltage is less than the first preset voltage value, the control circuit controls the first switch to conduct and starts cyclic control. The state of the first switch is opposite to that of the second switch.

One or more controllers, responsive to an amount of power transferred from a traction battery of a vehicle to a utility grid during a planning period exceeding a predefined kWh amount that is greater than a kWh capacity of the traction battery, inhibit further transfer of power from the traction battery to the utility grid for a remainder of the planning period.

A simulation test system and a simulation test method are provided. The simulation test system includes a control device, a power setting device, and a data capture device. The control device generates a context control signal corresponding to one of a plurality of operating contexts. The power setting device generates at least one of a simulated charging power and a simulated load in response to the context control signal and provides at least one of the simulated charging power and the simulated load to a device under test to configure the device under test to generate test data in response to at least one of the simulated charging power and the simulated load. The data capture device captures the test data and provides the test data to the control device.

A charging device includes a charging port, an onboard battery, and a control device. The charging port can be electrically coupled to an external power source. The onboard battery can be electrically coupled to the charging port. The control device is configured to charge the onboard battery with power supplied through the charging port. The control device includes one or more processors and one or more memories. The one or more processors are configured to execute a process including suspending the charging of the onboard battery at a prescribed timing during the charging of the onboard battery, discharging at least some of the power in the onboard battery from the onboard battery when the charging of the onboard battery is suspended, measuring a voltage of the onboard battery after the discharging, and deriving a state of charge of the onboard battery, based on the measured voltage of the onboard battery.