There is a demand for an information processing device capable of maintaining, as long as possible, a state in which a decrease an the processing speed of a CPU due to heat generation hardly occurs. Therefore, proposed is an information processing device including a secondary battery, and the information processing device includes a measurement unit that measures a remaining amount of the secondary battery, a determination unit that determines whether or not the remaining amount is equal to or more than a first threshold and determines whether or not a specific application is in a foreground state, and a charge control unit that stops charging the secondary battery by using an external power supply in a case where the remaining amount is equal to or more than the first threshold and the specific application is in the foreground state.

A zinc-air charger having a case defining a plurality of pass core vents, and an internal case cavity; a plurality of zinc-air cells that are electrically coupled and disposed within the internal case cavity; a coupling plug configured to couple with and provide electrical power generated by the plurality of zinc-air cells to a device that is separate from the zinc-air charger; and a system configured to: output electrical power generated by the plurality of zinc-air cells to the device; identify a state of the plurality of zinc-air cells, determine, based at least in part on the identified state of the plurality of zinc-air cells, that one or more of the plurality of zinc-air cells are air-starved, and in response to determining that the one or more of the plurality of zinc-air cells are air-starved, generate a power cut-off for a period of time that ceases electrical power output to the device.

The present application provides a charging control method and apparatus, a battery management system and a readable storage medium. The charging control method includes: obtaining a battery temperature and a battery state of charge; determining a pulse charging frequency according to the battery temperature, the battery state of charge and a pre-calibrated corresponding relationship; obtaining a preset waveform characteristic of a pulse charging waveform; where the waveform characteristic includes a ratio range of an area of a positive pulse waveform to an area of a negative pulse waveform in each pulse cycle of the pulse charging waveform; and generating a charging request according to the pulse charging frequency and the waveform characteristic and transmitting the charging request to a charging device. The method is used for improving charging stability and safety of a battery.

An uninterruptible power supply device includes a bidirectional chopper that converts a first DC voltage supplied from a battery into a second DC voltage and supplies the second DC voltage to an inverter when a power failure of a commercial AC power supply occurs. The bidirectional chopper includes a capacitor that stabilizes the second DC voltage. The uninterruptible power supply device further includes: a current detector that detects an output current of the battery; and a control circuit that, based on a detection result by the current detector, calculates an estimated temperature increase value of the capacitor every time a predetermined time period elapses, and stops an operation of the bidirectional chopper when the calculated estimated temperature increase value is higher than an upper limit value.

A storage battery management device includes a control unit. The control unit obtains a current value of a current flowing through a storage battery, a temperature of the storage battery, and a charging rate of the storage battery during a target period. The control unit determines an operation mode of the storage battery during the target period on the basis of the current value and the charging rate. The control unit estimates a degree of degradation of the storage battery during the target period on the basis of the operation mode and the temperature.

Example embodiments of systems, devices, and methods are provided herein for controlling source current in systems having two or more energy sources. The source current can be controlled in a manner that seeks balance in one or more operating parameters of the sources while meeting load demand. Examples of operating parameters can include charge, temperature, voltage, state of health, current, and others. Example embodiments are described that utilize a balance factor for each parameter being balanced, where the balance factor can vary with the magnitude of the parameter being balanced. A reference current can be determined that is selected to satisfy the load demand while at the same time taking into account present offset values of the balanced operating parameters between the sources. The embodiments can be applied with the system in either a discharge or a charge state.

Embodiments of the present invention relates to a charging device (and a charging method), the charging device for charging a battery pack, the battery pack being detachably mounted on a power tool to provide power to the power tool, wherein the charging device comprises: a parameter detecting unit configured to detect a parameter related to a charging current for the battery pack, the parameter comprising a temperature of the battery pack; and a control unit configured to adjust the charging current for the battery pack according to output of the parameter detecting unit to prevent the temperature of the battery pack from reaching a first preset temperature, wherein when the temperature of the battery pack reaches the first preset temperature, the battery pack enters an over-temperature protection state, thereby preventing a life of the battery pack from being affected, By adjusting the charging current, the present invention can not only ensure that the battery pack does not enter over-temperature protection, but also ensure that the charging current of the battery pack is not too small, so that the battery pack has the highest charging efficiency.

A power storage apparatus includes a storage battery chargeable and dischargeable, a voltage stepping-up/down circuit that performs a voltage stepping-up operation of stepping up by PWM control a voltage supplied from the storage battery and outputting a stepped-up voltage to a high-voltage DC bus line, and a voltage stepping-down operation of stepping down by PWM control a voltage supplied from the high-voltage DC bus line and supplying a stepped-down voltage to the storage battery. Moreover, a detection device is provided that outputs a detection signal indicating a full-charged state of the storage battery, and a controller keeps a high-side switch in the voltage stepping-up/down circuit in an off state in response to input of the detection signal.

A charging control apparatus includes: a prediction unit configured to predict a change in temperature of a battery over time during charging; a calculation unit configured to calculate, based on the change in temperature over time predicted by the prediction unit, a degree of influence that the battery receives from the temperature of the battery exceeding a predetermined upper-limit temperature control value; and a charging control unit configured to allow the temperature of the battery to exceed the upper-limit temperature and charge the battery when the degree of influence is less than a predetermined reference value.

A method for fast charging from an initial charge state SOC.sub.0 to a predefined target charge state SOC.sub.target is provided. Optimized fast charging conditions are determined using impedance measurements or impedance spectroscopy (EIS) of a battery system which includes a plurality of lithium ion cells. Units consisting of individual cells or of blocks of cells connected in parallel are connected in series, and devices for measuring the voltage and at least one component of the impedance of these cell units are also provided.