An information processing apparatus is provided with a real-time clock (RTC), a battery that supplies power to the RTC, a power source unit that charges the battery, a display unit that displays a screen for setting date and time of the RTC, on a basis of an output voltage of the battery, and a control unit that performs control so as to charge the battery on the basis of the setting of the date and time of the RTC via the screen.

A system is disclosed for charging (recharging) and discharging a battery pack comprising a plurality of battery cells. The system may execute an iterative process of monitoring a frequency corresponding to the minimum impedance value of the battery pack or cell(s) of the pack and adjusting the charge energy signals applied to the battery pack. In some instances, taps may be provided within the battery pack to monitor the frequency response to the charge energy signal for one or more cells of the battery pack. In other instances, the battery pack as a unit may be monitored iteratively. This process may maintain a relative charge balance across the cells of the battery pack, decrease the time to recharge the battery pack, extend the life of the pack, optimize the amount of current charging the battery pack, and avoid energy lost to various inefficiencies.

A system for AC charging of a battery includes at least a modulated alternating current signal generator, a current amplifier, and a voltage controller. The modulated alternating current signal generator generates a rectangular wave.

A wireless power transfer system can include an electronic device including a first wireless power transfer coil and wireless power transfer circuitry coupled to the wireless power transfer coil. The wireless power transfer circuitry can be capable of receiving power and transmitting power wirelessly via the first wireless power transfer coil. The system can further include an accessory device including a second wireless power transfer coil, a rectifier coupled to the second wireless power transfer coil, and an energy storage device coupled to the rectifier by a regulator circuit. The wireless power transfer circuitry can operate in a pulsed or burst wireless power transfer mode to deliver power to the accessory device.

A battery management system for a battery comprising at least one lithium sulphur battery cell. The battery management system comprising: a charging module operable to charge a lithium sulphur battery cell of the battery by delivering a pulsed charging current to the battery cell and to vary the duty cycle of the pulsed charging current so as to reduce the duty cycle of the pulsed charging current during charging of the battery cell.

A charging circuit and a method with an inductor, an input to receive an input voltage, an output, and a switching means is presented. The switching means performs cycles where each cycle includes, switching the circuit such that the inductor enters into an energy charging state in which the inductor stores energy provided by the input voltage. When energy stored in the inductor reaches an energy threshold, the switching circuit operates such that the inductor enters into an energy discharging state in which the inductor provides energy to the output. The energy threshold is based on a predefined maximum energy storage current value and the time between cycles is based on a duration of the energy discharging state.

A battery charging method and corresponding apparatus include charging a battery based on an initial charging operation, and verifying whether a change event, with respect to a charging operation, occurs based on the charging of the battery. The battery charging method and corresponding apparatus also include changing the charging operation to an adjusted charging operation in response to verifying that the change event, with respect to the charging operation, occurs. The change event includes a physical quantity event in which a physical quantity of the battery sensed during a charging rest time of the initial charging operation is greater than or equal to a threshold physical quantity.

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.

A battery charging circuit for charging batteries includes a first switch connected in series between a first pole of a power supply and a first pole of the first battery cell, a second switch connected in parallel between the first pole of the first battery cell and a second pole of the first battery cell configured to adjust a size of a current applied to the first battery cell, a third switch connected in parallel between a first pole of the second battery cell and a second pole of the second battery cell, the third switch being configured to adjust a size of a current applied to the second battery cell, and a fourth switch connected in series between the second pole of the first battery cell and the first pole of the second battery cell.

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.