A battery internal temperature information processing method, a computer device, and a storage medium that first acquire off-line testing data for off-line testing a battery module and construct an equivalent thermal network model from the off-line testing data, determine optimal model parameters of the equivalent thermal network model based on a multi-objective function fitting method; thereafter, a first battery internal temperature estimate of the battery of the vehicle at a first moment in actual operation of the vehicle is determined, in turn, based on the acquired initial state vector values of the battery of the vehicle, first operational data at a first moment in actual operation of the vehicle, and an equivalent thermal network model including the optimal model parameters.

The present disclosure relates to an electrified vehicle and a method for providing a distance to empty thereof that provide the distance to empty with a minimum error with an actual mileage. The electrified vehicle includes a temperature sensor for measuring an ambient temperature of the vehicle, a BMS for monitoring a SOC of a battery mounted on the vehicle, and a controller that calculates a DTE based on the ambient temperature and the SOC of the battery, adjusts a DTE reduction rate based on an actual discharging amount of the battery while traveling, and updates the DTE based on the adjusted DTE reduction rate.

The present disclosure relates to an electrified vehicle and a method for providing a distance to empty thereof that provide the distance to empty with a minimum error with an actual mileage. The electrified vehicle includes a temperature sensor for measuring an ambient temperature of the vehicle, a BMS for monitoring a SOC of a battery mounted on the vehicle, and a controller that calculates a DTE based on the ambient temperature and the SOC of the battery, adjusts a DTE reduction rate based on an actual discharging amount of the battery while traveling, and updates the DTE based on the adjusted DTE reduction rate.

A shutdown method applicable to a terminal having a rechargeable battery, the method includes: determining a first impedance and a second impedance of the rechargeable battery, wherein the first impedance is an impedance determined based on a current temperature of the rechargeable battery, and the second impedance is an impedance determined based on a current number of charge times of the rechargeable battery; determining a target impedance as a larger impedance value from the first impedance and the second impedance; determining a shutdown voltage of the terminal based on a preset open circuit voltage of the rechargeable battery, the target impedance and a current operating current of a charging circuit; and controlling the terminal to shut down, when an operating voltage of the rechargeable battery is decreased to the shutdown voltage.

A deterioration degree diagnosis device includes: a charging/discharging control unit configured to control charging or discharging of a battery; a battery information measurement unit configured to measure a voltage and a current of the battery and measure a capacity and voltage transition during charging or discharging; a multiple data integration unit configured to integrate battery capacity voltage data in at least two different sections measured by the battery information measurement unit, and create a battery capacity voltage curve; and a deterioration degree diagnosis unit configured to estimate a deterioration degree of the battery on the basis of the battery capacity voltage curve.

The invention relates to an energy storage comprising a plurality of series connectable energy modules connected to a string via a plurality of switches. Wherein a string controller controls which of the energy modules that are part of a current path through the string by control of the status of the switches. An energy storage monitoring system is monitoring an energy storage element operating parameter of an energy module, the energy storage monitoring system comprises: a current sensor and a plurality of energy module print. The plurality of energy module prints establishes an energy module operating parameter of the associated energy module. The current sensor establishes the current in the current path. The string controller is configured for by-passing an energy module based on information of status of the switches, the measured current in the current path and the battery operating parameter measured at the energy modules.

This document describes techniques and systems that enable battery state estimation. The techniques and systems may be used to determine a shut-down voltage for a battery of an electronic device. Additionally or alternatively, the techniques and systems may be used to determine a state-of-charge of the battery, which may be determined relative to the shut-down voltage. The techniques and systems use current or expected conditions at the battery to estimate the battery state. These techniques can allow the electronic device to dynamically set a shut-down voltage, rather than using a fixed shut-down voltage over the life of the electronic device. The dynamically set shut-down voltage can provide a low margin, and therefore a greater portion of battery capacity, when operating in good conditions and provide a relatively large margin that is sufficient for poor conditions.

This document describes techniques and systems that enable battery state estimation. The techniques and systems may be used to determine a shut-down voltage for a battery of an electronic device. Additionally or alternatively, the techniques and systems may be used to determine a state-of-charge of the battery, which may be determined relative to the shut-down voltage. The techniques and systems use current or expected conditions at the battery to estimate the battery state. These techniques can allow the electronic device to dynamically set a shut-down voltage, rather than using a fixed shut-down voltage over the life of the electronic device. The dynamically set shut-down voltage can provide a low margin, and therefore a greater portion of battery capacity, when operating in good conditions and provide a relatively large margin that is sufficient for poor conditions.

A method of estimating a battery current limit for operation of a battery cell over the course of a specified prediction time. The method includes generating a plurality of current limit estimations by means of a plurality of current limit estimation sub-methods, wherein at least one current limit estimation sub-method generates its current limit estimation based on an RC equivalent circuit model of the battery cell, and determining the charge current limit by finding the lowest magnitude current limit estimation in the plurality of current limit estimations. At least one parameter of the RC equivalent circuit model is set based on the specified prediction time and at least one variable from the set of: a state of charge (SOC) of the battery cell, a temperature of the battery cell, a state of health (SOH) of the battery cell, a capacity of the battery cell, and a current of the battery cell.

A method of estimating a battery current limit for operation of a battery cell over the course of a specified prediction time. The method includes generating a plurality of current limit estimations by means of a plurality of current limit estimation sub-methods, wherein at least one current limit estimation sub-method generates its current limit estimation based on an RC equivalent circuit model of the battery cell, and determining the charge current limit by finding the lowest magnitude current limit estimation in the plurality of current limit estimations. At least one parameter of the RC equivalent circuit model is set based on the specified prediction time and at least one variable from the set of: a state of charge (SOC) of the battery cell, a temperature of the battery cell, a state of health (SOH) of the battery cell, a capacity of the battery cell, and a current of the battery cell.