A method to control a battery temperature includes: determining state difference information of a first battery, among batteries, based on state information of the first battery and average state information of the batteries; calculating a first output value of a first converter corresponding to the first battery based on the determined state difference information; and controlling a charging and discharging process of the batteries to cause the first converter to generate a power flow based on the calculated first output value.

An electric power supply system 100 comprises a battery 10 that generates heat by discharging an electric power, and a fuel cell system 20 that generates the electric power by fuel cells 21. The electric power supply system 100 supplies power to an electric load. The electric power supply system 100 determines whether or not a temperature of the battery 10 is equal to or less than a predetermined temperature, and when the temperature of the battery is equal to or less than the predetermined temperature, the electric power supply system 100 discharges the battery 10 to the fuel cell system 20.

A management apparatus for an energy storage device, which performs current measurement processing for measuring a current of the energy storage device by using a measuring resistor having one side connected to the energy storage device and the other side connected to an external terminal, temperature measurement processing for measuring at least one of a temperature of the energy storage device and a temperature of the external terminal, and correction processing for correcting, when there is a temperature difference between the temperature of the energy storage device and the temperature of the external terminal, a measurement error caused by the temperature difference for a measured current value measured by the current measurement processing, or guarantee processing for guaranteeing a function to be performed in accordance with a measured current value measured by the current measurement processing.

A management apparatus for an energy storage device, which performs current measurement processing for measuring a current of the energy storage device by using a measuring resistor having one side connected to the energy storage device and the other side connected to an external terminal, temperature measurement processing for measuring at least one of a temperature of the energy storage device and a temperature of the external terminal, and correction processing for correcting, when there is a temperature difference between the temperature of the energy storage device and the temperature of the external terminal, a measurement error caused by the temperature difference for a measured current value measured by the current measurement processing, or guarantee processing for guaranteeing a function to be performed in accordance with a measured current value measured by the current measurement processing.

A battery monitoring device includes temperature detectors that detect respective temperatures of battery elements in a battery of an electric vehicle. The temperature detectors each include first and second detection circuits, a comparator circuit, and first and second output terminals. The first detection circuit detects a temperature in a first temperature range and generates a first detection signal. The second detection circuit detects a temperature in a second temperature range and generates a second detection signal. The comparator circuit compares a detection output signal with a threshold and generates a flag signal indicative of the presence or absence of an abnormal event. The detection output signal and the flag signal are outputted through a first output terminal and a second output terminal, respectively. Each of the temperature detectors switches the detection output signal between the first detection signal and the second detection signal on the basis of the flag signal.

At least one embodiment is directed to a system including a motor, a battery that provides power to the motor, and control circuitry that provides one or more first current pulses to the motor using power from the battery to cause one or more second current pulses in the battery that heat the battery to a desired temperature while maintaining zero torque in the motor.

Provided are a control method for a battery heating system, a battery heating system, and an electric vehicle. The battery heating system includes a supercapacitor and a pulse control unit. The control method includes: obtaining a temperature value and an SOC value of a power battery; and issuing a heating instruction to the pulse control unit when the temperature value is lower than a predetermined temperature threshold and the SOC value is higher than a predetermined charge threshold, to allow the pulse control unit to control, based on the heating instruction, bi-directional energy flow between the power battery and the supercapacitor by means of a pulse current, to heat the power battery.

The disclosure provides a method for controlling a charging current of an electric vehicle and a charging device. The controlling method includes: sampling current temperature of the charging connection node; generating a current regulation amount according to the current temperature and a preset target temperature threshold; and regulating the charging current flowing through the charging connection node according to the current regulation amount.

A charge status control system 99 includes: a power generator 40a configured to generate electrical power and to supply it to a load; a battery 32 configured to store the electrical power generated by the power generator 40a and to supply the stored electrical power to the load; an ECU 33 configured to detect a state of charge of the battery 32; and a control unit 91 configured to, if a detection result of a remaining charge amount of the battery 32 by the ECU 33 is a storage threshold or more, control the state of charge of the battery 32 by discharging the electrical power stored in the battery 32 to an external power source 111. According to this, the remaining charge amount of the battery 32 can be maintained to approximately the storage threshold or less to suppress the progression of the deterioration of the battery 32.

A charge status control system 99 includes: a power generator 40a configured to generate electrical power and to supply it to a load; a battery 32 configured to store the electrical power generated by the power generator 40a and to supply the stored electrical power to the load; an ECU 33 configured to detect a state of charge of the battery 32; and a control unit 91 configured to, if a detection result of a remaining charge amount of the battery 32 by the ECU 33 is a storage threshold or more, control the state of charge of the battery 32 by discharging the electrical power stored in the battery 32 to an external power source 111. According to this, the remaining charge amount of the battery 32 can be maintained to approximately the storage threshold or less to suppress the progression of the deterioration of the battery 32.