Systems and apparatus may carry out analysis of battery physical phenomena, and characterize batteries based on phenomena occurring in particular time and/or frequency domains. These systems may be additionally responsible for charging and/or monitoring a rechargeable battery. Examples of battery physical phenomena include mass transport (e.g., diffusion and/or migration) in battery electrolytes, mass transport in battery electrodes, and reactions on battery electrodes.

A charging method for battery. In an n-th charging process, charging a first battery to a charge cut-off voltage U.sub.n in a first charging manner, where n is a positive integer; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.n of the first battery at a standing time of t.sub.i; in an m-th charging process, charging the first battery to the charge cut-off voltage U.sub.n in the first charging manner, where m is a positive integer, and m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.m of the first battery at the standing time of t.sub.i; and under the condition of OCV.sub.n>OCV.sub.m, continuing to charge the first battery standing in a second charging manner to a first voltage U′.sub.m, where U′.sub.m=U.sub.n+k×(OCV.sub.n−OCV.sub.m), and 0<k≤1.

A backup power supply device having a short charging time is provided. The backup power supply device for supplying power when a main power supply is under a power failure includes first and second battery packs connected in parallel, a charging circuit for charging the first and second battery packs, first and second discharging switches for causing the first and second battery packs to discharge to the load device respectively, and a control unit. The control unit compares the battery voltages of the first and second battery packs with an output voltage from the main power supply. The control unit sets the first and second discharging switches to ON when the battery voltages are lower than the output voltage. When the battery voltage of the battery pack exceeds the output voltage of the main power supply due to charging, the control unit sets the first discharging switch and the second discharging switch to OFF. Thereafter, after the first and second battery packs are fully charged, the control unit switches the first and second discharging switches to ON when the battery voltage has dropped to a dischargeable upper limit voltage.

A micro-network includes at least two heating appliances with communication modules, one being used for obtaining and transmitting a first data set having at least one measurement related to the electricity consumption of the heating appliance, at least one measurement related to the electricity production of same and at least one measurement related to a state of charge of an electrical energy storage device, and subsequently controlling the power supply to the heating member. The other module is used for obtaining, and transmitting to a supervision module, first and second data sets including at least one item of data relating to an electrical power source, and subsequently transmitting a first setpoint state of charge related to the state of charge of the electrical energy storage device of the other heating device. The first setpoint state of charge is taken into account when controlling the power supply to the heating member.

A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage U.sub.n in a charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.n, of the first battery at a standing time of t.sub.i; in an m-th charging process, charging the first battery to the charge cut-off voltage U.sub.n in the charging manner, where m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.m of the first battery at the standing time of t.sub.i; and under the condition of OCV.sub.n>OCV.sub.m, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to a first charge cut-off voltage U.sub.m+1 in the charging manner, where U.sub.m+1=U.sub.n+k×(OCV.sub.n−OCV.sub.m), and 0<k≤1.

An electronic device, according to various embodiments, comprises: a battery connecting circuit; a charging circuit for supplying power supplied from an external electronic device to a component and battery of the electronic device; and a processor. The processor may be configured to: in a first state in which the electronic device of which the battery is not connected to the battery connecting circuit receives power from the external electronic device, measure the voltage of the battery when it is confirmed that the battery is connected to the battery connecting circuit; and after confirming the capacity of the battery on the basis of the measured voltage, switch to a second state in which the charging circuit supplies power from the external electronic device to the battery connected to the battery connecting circuit. Various other embodiments may be provided.

A method and to a device for ascertaining a state of health of a battery for a transportation device. The method includes: charging the battery until a predefined target voltage is reached in a first charging phase of the battery, ascertaining a first voltage value of the battery at a first predefined point in time after the predefined target voltage has been reached in a relaxation phase of the battery, ascertaining a second voltage value of the battery at a second predefined point in time, deviating from the first predefined point in time, in the relaxation phase of the battery, ascertaining a piece of information about the state of health of the battery based on a change of the second voltage value with respect to the first voltage value, and using the piece of information in the transportation device and/or in an external server.

The invention provides methods, devices and non-transitory tangible computer-readable storage media for estimating a state of charge of a battery and extracting a charging curve of the battery. The method for estimating the state of charge of the battery includes estimating a first state of charge of the battery; determining a charging curve that conforms to the present charging scenario, wherein the present charging scenario is characterized by at least one of parameters including an ambient temperature, a charging rate, an internal resistance, a state of health, a lifespan, and an open circuit voltage of the battery; and correcting the first state of charge according to the charging curve to obtain a final state of charge of the battery.

Multi-port power adapters. At least one example is a method including: supplying a first bus voltage to a first device by way of a DC-DC converter coupled to a link voltage; supplying a second bus voltage to a second device by way of a second DC-DC converter coupled to the link voltage; converting an AC voltage to the link voltage by way of an AC-DC converter; selecting, by a shunt regulator, a setpoint for the link voltage based on the first bus voltage and the second bus voltage; and regulating the link voltage to the setpoint by the AC-DC converter.

An electricity storage device includes a plurality of cell batteries C.sub.1 to C.sub.M serially connected; and a management module including a balance circuit that can selectively cause electricity to be discharged from each of the plurality of cell batteries, and a controller. The controller includes a current-voltage acquiring unit that acquires a charging current and the respective voltages of the plurality of cell batteries and a balance control unit that, if a determination condition and an execution condition are satisfied, determines a lowest-voltage cell battery having a lowest voltage among the plurality of cell batteries and controls the balance circuit such that electricity is discharged from the plurality of cell batteries other than the lowest-voltage cell battery for time periods in accordance with differences between the lowest voltage and the respective voltages of the cell batteries when the determination condition and the execution condition are satisfied.