The present invention relates to an individual discharging system and method of a battery rack, and more particularly, to an individual discharging system and method of a battery rack capable of individually discharging a battery rack without dependence on an external load.

Disclosed in embodiments of the present disclosure are a wireless charging control method and a wireless charging system. An electricity transmitter is controlled to charge a chargeable device in the discontinuous mode in response to the temperature information matches the first preset condition. In the discontinuous mode, electricity transmitter is controlled to charge the chargeable device during first charging time period of each charging cycle, and to stop charging the chargeable device during second charging time period of each charging cycle to let an energy storage element in the chargeable device discharge to a battery. Thus, it is possible to reduce the power consumption caused by magnetic induction in the wireless charging process, to lower the temperature of the electricity transmitter and the chargeable device, and to reduce the wake-up times of the chargeable device during the charging process.

Systems and methods for providing notifications regarding battery pack charging status. One charging system includes a battery charger and an external device. The battery charger includes a housing, a battery pack interface, a wireless communication controller, and a charger controller. The charger controller receives status information associated with power tool battery packs and transmits the status information to an external device. The external device includes a display and an external device controller. The external device controller receives the status information from the charger controller and controls the display to display the status information via a user interface.

Charging an accumulator having an energy storage cell, a data interface and a wake-up circuit. A charging apparatus contains a data interface, a controller, a timer and a switch apparatus. The data interfaces connected to one another via a communication line for differential communication between the accumulator and charging apparatus. Setting the timer to a predetermined period of time; setting the control electronics of the accumulator to a deactivation mode; sending at least one signal from the charging apparatus to the accumulator via the communication line after the predetermined period of time has elapsed; activating the wake-up circuit for activating control electronics by detecting a voltage value from the communication line, the voltage value is consistent with either the dominant or recessive state of the communication line; setting the control electronics to an activation mode; and requesting or releasing a charging current from the charging apparatus using the accumulator.

A battery pack in accordance with an exemplary embodiment, which is booted when coupled to an external apparatus, includes: a connector which is a member configured to connect the external apparatus and the battery pack; and a booting circuit configured to start operation of the battery pack when the battery pack and the external apparatus are coupled. The connector includes: a (+) output terminal connected to a (+) output terminal of the battery pack; a coupling check terminal configured to check whether the external apparatus and the battery pack are coupled; a data transceiving terminal configured to tranceive data between the external apparatus and the battery pack; and a (−) output terminal connected to a (−) output terminal of the battery pack.

Systems and methods are described for managing charging and discharging of battery packs. In one or more aspects, a system and method are provided to minimize overcharging of battery cells of specific battery chemistries while still enabling fast charging cycles. In other aspects, a buck converter may be used to reduce a voltage of power used to charge the cells. In further aspects, a fast overcurrent protection circuit is described to address situations involving internal short circuits of a battery cell or battery pack. In yet further aspects, a bypass circuit is provided in series-connected battery packs to improve the charging of undercharged battery packs while also increasing the efficiency of the overall charging process. In other aspects, a circuit is provided that permits a controller to determine a configuration of battery packs. In yet further aspects, a system may determine a discharge current for a collection of battery packs based on each battery pack's state of health (SOH) and forward that determination to an external device.

A charge/discharge management apparatus for executing charge/discharge of a battery of a vehicle electrically connected to a facility, comprising an obtaining unit for obtaining use histories of a plurality of batteries corresponding to a plurality of vehicles electrically connected to the facility, and a selection unit for selecting a battery subjected to execution of charge/discharge from the plurality of batteries based on priority decided from the use histories.

A system includes a storage in which information indicative of a degree of degradation, which is a degree of degradation of each of a plurality of battery packs for rent, is stored. The system also includes an electric reader that acquires information indicative of a first degree of degradation, which is a degree of degradation of a first battery pack, which is a battery pack brought by the user. The system further includes a processor that selects, as a second battery pack rented to the user, a battery pack whose degree of degradation is equal to or lower than the first degree of degradation from among the plurality of battery packs for rent when the second battery pack is rented to the user by exchange between the first battery pack and the second battery pack.

Certain aspects relate to a ground support cart for charging an electric aircraft. An exemplary ground support cart includes a frame, at least a wheel operatively coupled to the frame and configured to facilitate rolling translation of the ground support cart, a cart battery mounted to the frame and configured to provide a first electrical charging current, a conductor in electric communication with the at least a cart battery, a coolant source mounted to the frame and configured to provide a coolant flow, a hose in fluidic communication with the coolant source, and a controller configured to control the first electrical charging current within the conductor and the coolant flow within the hose.

A controller, a system including such a controller, and a method for controlling discharging of a plurality of battery packs are provided. The controller includes one or more processor and at least one tangible, non-transitory machine readable medium encoded with one or more programs configured to perform steps to minimize a corresponding voltage gradient versus charge of each battery pack to be below a predetermined threshold, and calculate a respective discharging share of each battery pack based on the charge and the voltage in an updated curve of voltage versus charge of each battery pack and the total power demand. The controller provides signals with instructions to the plurality of battery packs and/or the one or more power converters for discharging power from the plurality of battery packs based on the respective discharging share of each battery pack and/or keeping a certain battery pack idle.