The present disclosure provides a charging method, device, and system. The charging device includes a voltage regulation circuit, and can charge a charged device through voltage step-down or voltage step-up. In addition, the charging device and a charged device can transfer statuses of a circuit and a battery through a change of a switch status, so that the charging device can regulate a charging voltage and/or a charging current based on the statuses of the circuit and the battery.

A charging method and apparatus, a computer device, and a storage medium. The method includes: when a battery reaches an end-of-charge phase, acquiring a charging mode of the battery during the end-of-charge phase, where in the charging mode, a charging current of the battery changes dynamically; then determining an electrical parameter value required for charging the battery during the end-of-charge phase on the basis of the charging mode and status information of the battery; and finally, sending the electrical parameter value to a charging pile of the battery until a charging cut-off condition of the battery is reached.

A method of constructing a mobile device case includes placing a coil repeater assembly on pedestal members of a mold section, the repeater assembly including a wireless charging repeater circuit and a substrate, assembling a mold using the mold section to form a mold cavity, the cavity defining surfaces of the case body, injecting into the mold cavity heated thermoplastic material which flows around the repeater assembly, and removing the mold, the wireless charging repeater circuit having an inductive coil disposed on a surface of the substrate and a capacitor electrically coupled to ends of the coil. The wireless charging repeater circuit excludes electrical connection to an active component that supplies power. The coil repeater assembly is located within the case body such that, when the mobile device case is attached to a mobile device, the inductive coil is located proximate to a wireless charging coil in the mobile device.

A battery diagnosing apparatus according to an embodiment includes a measuring unit configured to measure an open circuit voltage (OCV) of a battery after charging of the battery is finished and measure a resistance of the battery while the battery is discharged for a predetermined time after the charging of the battery is finished; and a control unit configured to receive voltage information for the OCV and resistance information for the resistance from the measuring unit, calculate a voltage deviation between the OCV and a criterion voltage preset for the battery, calculate a resistance deviation between the resistance and a criterion resistance preset for the battery, and diagnose whether degradation of the battery is accelerated based on the voltage deviation and the resistance deviation.

Various systems and methods are provided for monitoring state of charge (SOC) of wireless headphones. In one embodiment, a method comprises initializing a state of charge (SOC) of the earbud battery based on battery voltage in response to transitioning from a non-charging mode to a charging mode of the wireless earbud. In another embodiment, a first system comprises a left earbud, a right earbud, and a charging case comprising a microcontroller unit that monitors a right earbud battery and a left earbud battery via the charging case. In another embodiment, a second system comprises a left earbud, a right earbud, and a charging case comprising at least one communication bus communicatively coupled to the left earbud and right earbud to compare and correct a total charge of the left earbud battery, the right earbud battery, and/or the charging case battery.

A charging management apparatus includes a main relay connected between a positive electrode terminal of a battery pack and a charging terminal of a charging connector, a current regulator connected in parallel to the main relay and including a precharge relay and a resistance regulation circuit connected in series, a battery pack voltage sensor, a battery pack current sensor, and a controller to control the main relay is into an on state and the precharge relay into an off state in response to a first switching condition while the main relay is in the off state, the resistance regulation circuit at a first resistance value and the precharge relay is in the on state, and to control the resistance regulation circuit to a second resistance value, the precharge relay into the on state and the main relay into the off state, in response to a second switching condition.

This application provides a charging method and apparatus, a vehicle, and a computer-readable storage medium. The method includes: obtaining a current voltage of a target battery; determining a current capacity of the target battery based on the current voltage; determining a chargeable capacity of the target battery based on the current capacity; and obtaining a real-time voltage of the target battery where the target battery is charged with the chargeable capacity, where the real-time voltage is used for determining a charge cut-off voltage of the target battery in a next charging.

Embodiments that provide advanced charging of energy source arrangements for energy storage applications are disclosed. The embodiments can be used within energy storage systems having a cascaded arrangement of converter modules. The embodiments can include the application of pulses to an energy source of each module of the system. The pulses can be applied for a duration sufficient to initiate an electrochemical reaction. Feedback based pulse control embodiments are also disclosed.

A multi-port charger has a plurality of charging ports, each configured for removably mounting and electrically charging a rechargeable battery unit, an indicator command unit and a user-activatable command activation unit which is configured to activate the indicator command unit, as well as a corresponding battery multi-port charger set. The indicator command unit is configured to send a charge status indicator command, which commands the battery unit mounted on the respective charging port to indicate its charge status on a battery-side display unit. Use may be for charging battery packs for electric garden and forestry working apparatus.

A battery bank unit includes: a first battery bank and a second battery bank that are connected in parallel to each other; and a control apparatus that starts charging the second battery bank after the first battery bank is fully charged. The control apparatus calculates remaining time to complete charge of the battery bank unit based on a temperature of the battery bank unit at a start of the charge of the battery bank unit and a state of charge (SOC) of at least one of the first battery bank and/or the second battery bank at the start of the charge of the battery bank unit.