Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.

Embodiments of the present application provide a charging and discharging apparatus, a method for charging a battery and a charging and discharging system, which are capable of ensuring security performance of a battery. The charging and discharging apparatus includes a bidirectional AC/DC converter, a first DC/DC converter, a second DC/DC converter and a control unit. The control unit is configured to: receive a first charging request transmitted by the BMS and control an AC power source and/or an energy storage unit to charge the battery; receive a first discharging request transmitted by the BMS and discharging a power of the battery according to the first discharging request; and receive a second charging request transmitted by the BMS and control the AC power source and/or the energy storage unit to charge the battery.

Embodiments of the present application provide a charging and discharging apparatus and a battery charging method, which are capable of ensuring security performance of a battery. The apparatus comprises a bi-directional DC/DC converter and a control unit, wherein the control unit is configured to: receive a first charging current transmitted by a battery management system (BMS) of a battery, control the bi-directional DC/DC converter based on the first charging current to charge the battery through an energy storage battery; receive a first discharging current transmitted by the BMS and control the bi-directional DC/DC converter based on the first discharging current to discharge a battery capacity of the battery to the energy storage battery; and receive a second charging current transmitted by the BMS and control the bi-directional DC/DC converter based on the second charging current to charge the battery through the energy storage battery.

The embodiments of the present application provide a method for charging a battery, a battery management system, and a charge and discharge device. The method for charging the battery includes: acquiring, by a BMS, a first charge current and sending it to a charge and discharge device, thus making the charge and discharge device charge the battery based on the first charge current; if a first accumulated charge quantity of the battery is greater than or equal to a first accumulated charge quantity threshold value, acquiring, by the BMS, a first discharge current and sending it to the charge and discharge device, thus making the charge and discharge device control the battery to discharge based on the first discharge current; and if a first accumulated discharge quantity of the battery is greater than or equal to a first accumulated discharge quantity threshold value.

Disclosed is a charging case, comprising a control module, a charging case battery and a voltage conversion module; the charging case battery is connected with the voltage conversion module; the voltage conversion module is configured for converting a direct current output by the charging case battery into a charging voltage and outputting the charging voltage to a charging management chip of a to-be-charged device so as to charge a battery of the to-be-charged device through the charging management chip; the control module is configured to regulate the charging voltage output by the voltage conversion module according to a voltage of the battery of the to-be-charged device during charging of the battery of the to-be-charged device.

An embodiment vehicle power management apparatus includes a memory configured to store a threshold state of charge (SOC) and a processing device functionally connected with the memory, wherein the processing device is configured to set a power management mode to a camping mode, identify a battery SOC, identify whether the battery SOC is greater than or equal to the threshold SOC, and enter the camping mode to allow an operation of a first vehicle function and limit an operation of a second vehicle function in response to the battery SOC being greater than or equal to the threshold SOC.

A charge controller that responds to extreme transients in current, voltage, and temperature. The charge controller monitors the drift of the battery charging rate versus its request and compensates for wind up that may lead to uncontrolled current into a high-voltage battery. This bi-directional anti-wind up charge controller allows the battery management system to independently adjust the current request to the charger, which is primarily useful during vehicle component failure; charger side faults, over-commend, or uncontrolled current; and allows for safe and continuous charging during unexpected charger events. A dynamic saturation bound allows the charge controller to adjust its requested current and compensate for auxiliary current draws when the charger is capable of providing more current. The charge controller switches between voltage and current control based on the voltage of the battery, adjusting for variability in state-of-health, and temperature of the battery pack.

A battery pack is provided in which the battery pack itself can recognize a determination of a full charge, which is made by a charger, without using a communication line. A battery pack is provided with a secondary battery, current measurement means for measuring a charging current for charging the secondary battery, and a control circuit which receives an output signal from the current measurement means. The control circuit determines that the secondary battery is fully charged when a reduction rate of the charging current in a unit time exceeds a predetermined value.

A battery array comprising a plurality of battery modules each having one or more battery cells. The battery array comprises a plurality of switching elements configured to switch the one or more battery cells in circuit and out of circuit with the battery array, and a memory storing a connection map indicating an identifier associated with each of the plurality of battery modules, a location of one or more electrical outputs of the battery array, and interconnections between each of the plurality of battery modules. The battery array also comprises a module management unit coupled to the memory that controls the plurality of switching elements. The module management unit is in electronic communication with remaining battery modules of the battery array based on a data mesh architecture.

Disclosed are a management method and device of Bluetooth® earphone charging paths, and a non-transitory readable storage medium, which detects that an external power supply is connected, acquires an electric power level of the charging box, judges whether the electric power level of the charging box is lower than a minimum working power threshold, closes a charging function of earphones and charges the charging box through the external power supply in responding to that the electric power level of the charging box is lower than the minimum working power threshold.