A method for adjusting an anode overvoltage of a lithium-ion battery (310) is described. A method for improving a capacity state of health of a lithium-ion battery (310) is described. A vehicle having at least one lithium-ion battery (310) whose anode overvoltage is adjusted using the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or whose capacity state of health is improved using the method for improving the capacity state of health of the lithium-ion battery (310) is described. A fleet management system that is designed to perform the method for adjusting the anode overvoltage of the lithium-ion battery (310) and/or the method for improving the capacity state of health of the lithium-ion battery (310) is described.

A secondary battery system according to one aspect of the present disclosure comprises: an electric load connected to a secondary battery; and a control device which, in an SOC-dV/dQ curve in which the dV/dQ that is the differential value of the change amount dV of the voltage V of the secondary battery with respect to the change amount dQ of the capacity Q of the secondary battery is plotted with respect to the charged state (SOC) expressed as a percentage of the capacity Q with respect to the fully charged capacity of the secondary battery, when at least one peak top SOC range including the peak top charge rate is set, and charging or discharging stops in the peak top SOC range, discharges the secondary battery by the electric load to avoid the peak top SOC range and ends charging or discharging of the secondary battery.

A control method of power supply for a portable electronic device is disclosed. The portable electronic device includes a power supply module and a control circuit, and the power supply module is configured to provide electric power to the portable electronic device. The control method of power supply includes detecting, by the control circuit, a system status of the portable electronic device or a module status of the power supply module; and adjusting, by the control circuit, a reserved battery capacity of a main battery of the power supply module according to the system status of the portable electronic device or the module status of the power supply module.

A method for detecting an abnormal fault of a battery, includes measuring cell data from battery cells included in a battery pack for a predetermined period of time; generating two-dimensional input data by mapping the cell data on a two-dimensional plane having a first axis corresponding to the period of time and a second axis corresponding to an index of each of the battery cells; inputting the two-dimensional input data into an abnormal fault detection model pre-trained to detect the abnormal fault in the battery; and determining whether an abnormal cell, having entered an abnormal state, among the battery cells, is present, based on an output of the abnormal fault detection model.

Example lighting systems may include a group charging station and a lighting device. Example group charging stations may include a plurality of power devices operable to power the lighting device, the plurality of power devices comprising a first power device and a second power device, the first power device comprising a first plurality of electrical contacts, the second power device comprising a second plurality of electrical contacts, and a group charging platform operable to concurrently charge the plurality of power devices.

An automobile charger, a charging method and a medium are provided. The charger includes a MCU, a switching power supply circuit, a first and second charging circuits, a battery voltage detection circuit, a charging current detection circuit, a constant-current driving control circuit, a constant-voltage driving control circuit and a switch driving control circuit. The charger is provided with the first and second charging circuits, which can realize three charging modes on the battery. The real-time voltage signal and the real-time current signal are collected with the battery voltage detection circuit and the charging current detection circuit, and through feedback of the real-time voltage signal and the real-time current signal, the MCU is configured to output PWM signals with different duty ratios to the constant-current driving control circuit and the constant-voltage driving control circuit, so as to realize output of different voltage values and current values of the switching power supply.

A charging device includes a charging port, an onboard battery, and a control device. The charging port can be electrically coupled to an external power source. The onboard battery can be electrically coupled to the charging port. The control device is configured to charge the onboard battery with power supplied through the charging port. The control device includes one or more processors and one or more memories. The one or more processors are configured to execute a process including suspending the charging of the onboard battery at a prescribed timing during the charging of the onboard battery, discharging at least some of the power in the onboard battery from the onboard battery when the charging of the onboard battery is suspended, measuring a voltage of the onboard battery after the discharging, and deriving a state of charge of the onboard battery, based on the measured voltage of the onboard battery.

A method and associated system for managing a battery cell includes determining, for a battery cell, a plurality of battery cell parameters; developing a plurality of on-vehicle reduced order linear data-driven battery models based upon the battery cell parameters, wherein each of the plurality of on-vehicle reduced order linear data-driven battery models determines corresponding model parameters; selecting one of the corresponding model parameters for one of the plurality of on-vehicle reduced order linear data-driven battery models based upon a previous state of charge for the battery cell; executing a derivative-free observer to determine a present state of charge (SOC) of the battery cell based upon the corresponding model parameters; and controlling the battery cell based upon the SOC.

A cordless battery-powered kitchen appliance system is provided. The system is comprised of a rechargeable battery, at least one battery-powered appliance, and a modular battery charging station. The rechargeable battery may comprise a current sensing circuit, voltage regulation circuitry, a pre-charge control mechanism, embedded temperature sensors, a state-of-charge estimator, and a communication interface. The battery further comprises a male connector formed of conductive terminals and digital communication lines. The charging station comprises one or more female charging ports with recessed or spring-loaded contacts configured to interface with the battery connector. The charging station includes physical and electrical interconnection features to support modularity, allowing multiple charging stations to be attached and powered from a single source through a power supply interface. The appliance comprises a receiving area with conductive contacts configured to receive the battery and establish electrical connectivity.

A battery discharge undervoltage protection method includes: acquiring a temperature and a first voltage of a battery; determining, based on the temperature, a depth of discharge of the battery; determining, based on the first voltage, a first remaining capacity proportion of the battery; and determining, based on the first remaining capacity proportion, the depth of discharge and a first undervoltage threshold, a second undervoltage threshold to increase a discharge capacity proportion of the battery, the first undervoltage threshold is a preset undervoltage threshold, and the second undervoltage threshold is a dynamically adjusted undervoltage threshold.