A vehicle air conditioning device is provided which is capable of accurately judging the need for temperature regulation of an object of temperature regulation mounted in a vehicle and efficiently performing temperature regulation. A compressor 2 to compress a refrigerant, an indoor heat exchanger (radiator 4 and heat absorber 9) for exchanging heat between air supplied to a vehicle interior and the refrigerant, an outdoor heat exchanger 7 disposed outside the vehicle interior, and a control device 11 are provided to perform air conditioning of the vehicle interior. An equipment temperature adjusting device 61 for adjusting the temperature of the object of temperature regulation mounted in the vehicle is provided. The control device controls the equipment temperature adjusting device 61 on the basis of a gradient (ΔTw) of a change in an index indicating the temperature of the object of temperature regulation.

A method and control system for controlling operation of a thermal control apparatus, the thermal control apparatus configured for thermal control of an energy storage means of a vehicle, the method comprising: obtaining a parameter indicative of a state of health of the energy storage means; and controlling operation of the thermal control apparatus in dependence on a difference between the parameter and a target, wherein the target is indicative of expected state of health, and wherein a rate of change of the target varies in association with cumulative energy throughput of the energy storage means.

A method and control system for controlling operation of a thermal control apparatus, the thermal control apparatus configured for thermal control of an energy storage means of a vehicle, the method comprising: obtaining a parameter indicative of a state of health of the energy storage means; and controlling operation of the thermal control apparatus in dependence on a difference between the parameter and a target, wherein the target is indicative of expected state of health, and wherein a rate of change of the target varies in association with cumulative energy throughput of the energy storage means.

A control device includes: a calculating portion configured to calculate an electrolytic solution passing amount based on a temperature history of a secondary battery; a determination portion configured to make the determination on a predetermined gas content based on one or more first thresholds and a ratio of the electrolytic solution passing amount to a free volume of a container in which the secondary battery is accommodated; and a controlling portion configured to form predetermined notification information when an affirmative determination is made on the predetermined gas content.

A control device includes: a calculating portion configured to calculate an electrolytic solution passing amount based on a temperature history of a secondary battery; a determination portion configured to make the determination on a predetermined gas content based on one or more first thresholds and a ratio of the electrolytic solution passing amount to a free volume of a container in which the secondary battery is accommodated; and a controlling portion configured to form predetermined notification information when an affirmative determination is made on the predetermined gas content.

Embodiments of this application provide a DC/DC conversion circuit, a power unit, a charging pile, and a charge-discharge heating method. The circuit includes: a first rectifier module, where an input end of the first rectifier module is connected to a power grid through an AC/DC conversion circuit; a transformer module, where an input end of the transformer module is connected to an output end of the first rectifier module; an energy storage module; and a second rectifier module, where an input end of the second rectifier module is configured to connect to an output end of the transformer module or the energy storage module, and an output end of the second rectifier module is configured to connect to a battery pack of an electric vehicle when the charging pile is charging the electric vehicle.

Embodiments of this application provide a DC/DC conversion circuit, a power unit, a charging pile, and a charge-discharge heating method. The circuit includes: a first rectifier module, where an input end of the first rectifier module is connected to a power grid through an AC/DC conversion circuit; a transformer module, where an input end of the transformer module is connected to an output end of the first rectifier module; an energy storage module; and a second rectifier module, where an input end of the second rectifier module is configured to connect to an output end of the transformer module or the energy storage module, and an output end of the second rectifier module is configured to connect to a battery pack of an electric vehicle when the charging pile is charging the electric vehicle.

Provided is an electric storage device including: an electric storage unit; a temperature measurement unit that detects the temperature of the electric storage unit; a current measurement unit that measures the charge/discharge current of the electric storage unit; and a safety evaluation unit that calculates the safety evaluation value of the electric storage unit, where the safety evaluation unit determines a temperature range to which the temperature detected by the temperature measurement unit belongs among multiple temperature ranges, and calculates a safety evaluation value, based on the temperature range as a result of the determination and an accumulated value of a value related to the charge/discharge time of the electric storage unit.

Provided is an electric storage device including: an electric storage unit; a temperature measurement unit that detects the temperature of the electric storage unit; a current measurement unit that measures the charge/discharge current of the electric storage unit; and a safety evaluation unit that calculates the safety evaluation value of the electric storage unit, where the safety evaluation unit determines a temperature range to which the temperature detected by the temperature measurement unit belongs among multiple temperature ranges, and calculates a safety evaluation value, based on the temperature range as a result of the determination and an accumulated value of a value related to the charge/discharge time of the electric storage unit.

A thermal management method is disclosed in the present application, which is used in a thermal management system. The thermal management system includes a battery equipment and a water chiller. The method includes: collecting a status date of the battery equipment and a real-time operation date of the water chiller; determining whether the status date is within a preset range; if the status date is not within the preset range, adjusting an operation mode of the water chiller according to the status date and the real-time operation date, so that the water chiller performs thermal management on the battery equipment according to the adjusted operation mode. The thermal management method can perform safer and more efficient thermal management control to the battery equipment. A thermal management device, a system and a computer-readable storage medium are further provided according to the present application.