This specification describes a charging apparatus for use in an electric vehicle charging system which comprises an AC charging circuit connected to an AC power source, a DC charging circuit connected to a DC power source or the AC power source, the charging apparatus comprising: a first switch; a second switch; and a charging cable comprising a plurality of power lines, wherein each of the first switch and the second switch comprises a plurality of poles and a plurality of sets of contacts, wherein the plurality of poles corresponds to the plurality of power lines of the charging cable, the first switch is configured to move the plurality of poles of the first switch between a first position wherein the plurality of power lines of the charging cable is connected to a first set of contacts of the first switch connected to the AC charging circuit, and a second position wherein the plurality of power lines of the charging cable is not connected to the first set of contacts of the first switch connected to the AC charging circuit, and the second switch is configured to move the plurality of poles of the second switch between a first position wherein the plurality of power lines of the charging cable is connected to a first set of contacts of the second switch, and a second position wherein the plurality of power lines of the charging cable is not connected to the first set of contacts of the second switch.

A server device is provided, the server device comprising a processing circuitry, a memory circuitry, an interface circuitry configured to connect to a communication network. The server device is configured to obtain machine data indicative of one or more features of a machine. The machine is configured to be powered by a battery device. The server device is configured to obtain usage data indicative of a usage of the machine. The server device is configured to obtain, for one or more battery devices, battery data indicative of one or more battery parameters of a battery device. The server device is configured to determine, for the one or more battery devices, a predicted impact on the one or more battery parameters based on the battery data, the usage data, and the machine data.

Disclosed herein is a mobile device charger. A mobile device charger, comprising a housing having a connector to a mobile device; an inner cavity configured to house one or more extensions, wherein the one or more power connectors are at least: a male USB connector, a male outlet plug connector, or a male cigarette lighter connector. The housing can comprise a cover, wherein the cover is configured to conceal the inner cavity of the housing. The mobile device charger is configured to have a retracted position and an extended configuration for the power connectors. The mobile device charger further comprising an extender fixture to secure the mobile device.

An electronic device is provided that includes a battery, a power management module, and a processor electrically connected to the power management module. The power management module includes a charging circuit including a plurality of switches, a capacitor, and an inductor. The power management module receives power from an external power supply device, identifies an electrical connection between the charging circuit and the external power supply device, operates in a first mode to charge the battery when a type of the external power supply device is a first type, and operates in a second mode to charge the battery when the type of the external power supply device is a second type.

A separator and an electrochemical device including the same. The separator includes an adhesive layer including first adhesive resin particles having an average particle diameter corresponding to 0.8-3 times of an average particle diameter of the inorganic particles and second adhesive resin particles having an average particle diameter corresponding to 0.2-0.6 times of the average particle diameter of the inorganic particles, wherein the first adhesive resin particles are present in an amount of 30-90 wt % based on a total weight of the first adhesive resin particles and the second adhesive resin particles. The separator shows improved adhesion to an electrode and provides an electrochemical device with decreased increment in resistance after lamination with an electrode.

The present disclosure provides devices, methods and systems for enabling low cost, high quality education in under- resourced regions such as post disaster areas. The devices provided herein may be charged and used without the need of sustainable power resources or access to internet at all times.

A vehicle electrical system includes: an electrical storage system, a first multiphase electrical machine having stator windings, and a first inverter connected to the electrical storage system and the first multiphase electrical machine, the first inverter has a plurality of switch legs with switches; a second multiphase electrical machine having stator windings, and a second inverter connected to the electrical storage system and the second multiphase electrical machine, the second inverter has a plurality of switch legs with switches; and a terminal having poles that receive single-phase AC or multi-phase AC or DC from a vehicle charging source, a first line connects a first pole of the terminal with a first switch leg of the first inverter, a second conductive line connects a second pole of the terminal with a first switch leg of the second inverter, and a first inductor in the first or second conductive lines.

Embodiments relate to a system comprising: a first module. The first module comprises a power receiving module configured to receive an input power from an energy source. The system further comprises a second module. The second module comprises a power conversion module configured to convert the input power to an output power. The system further comprises a third module. The third module comprises a control module for configuring the first module or the second module to perform a charging operation or a discharging operation. The first module, the second module and the third module are functionally integrated in the system to perform multiple modes of the charging operation or the discharging operation. The third module controls an impedance of the input power and the output power in the second module.

A charging circuit of an electronic device having a three-level converter, and a method and a device for controlling balancing in a charging circuit are provided. The electronic device includes a battery, at least one processor, and a charging circuit. The charging circuit includes, as a three-level converter, a switching circuit including multiple switching elements and a flying capacitor, and a filter circuit including an inductor and a capacitor. The charging circuit includes, as a balancing circuit, a balancing control circuit configured to, during balancing corresponding to a designated a mode, based on whether the balancing corresponds to targeted balancing, generate an output for maintaining or switching a balancing control direction configured for the designated mode, and a switching control circuit configured to perform switching for the switching elements in a balancing control direction corresponding to the designated mode, based on an output of the balancing control circuit, or perform switching for the switching elements in a direction reverse to a balancing control direction corresponding to the designated mode.

An electronic device is provided, belonging to the technical field of power charging. The electronic device includes a wired charging circuit, at least two wireless charging circuits, and a battery. The wired charging circuit and each the wireless charging circuit are connected to the battery. The wired charging circuit is used for receiving input electrical energy by a wired power interface, and charging the battery with the input electrical energy. Each the wireless charging circuit is used for receiving an alternating magnetic field, outputting electrical energy under a driving of the alternating magnetic field, and charging the battery with the output electrical energy. In this situation, charging power during a power charging process is improved to a certain extent.