A battery may include a first battery module, a second battery module, and a thermal management component. The first battery module may include a plurality of first battery cells, the second battery module may include a plurality of second battery cells, and the plurality of second battery cells may be located at the peripheries of the first battery cells. The thermal management component may include a first flow channel, a second flow channel, a first inlet through which fluid is input into the first flow channel, and a second inlet through which fluid is input into the second flow channel. The first flow channel and the second flow channel can be formed as two separate flow channels for flowing, so that the first flow channel adjusts temperature of the plurality of first battery cells and the second flow channel adjusts temperature of the plurality of second battery cells.

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.

A cold ambient battery chilling mode of an electric vehicle may be implemented if the vehicle battery is being charged when the ambient air temperature is low and a temperature of the battery is elevated. During cold ambient charging, coolant flows through a heater core and through a battery heat exchanger. Cold ambient air may be utilized to cool the coolant flowing through the heater core, and coolant from the heater core flows through the battery heat exchanger and cools the battery during charging. A battery chiller may be deactivated when the cold ambient battery chilling mode is activated to reduce energy consumption.

The invention relates to a device (1) for controlling the temperature of an energy store (5) for electrical energy of a motor vehicle. The device comprises an energy store (5) for electrical energy and a fluid circuit (3) which can be and/or is thermally coupled to the energy store for controlling the temperature of the energy store, wherein a temperature control fluid can be supplied to and discharged from the energy store (5) through the fluid circuit. The fluid circuit (3) further comprises a pump device (10, 11) for transporting the temperature control fluid through the fluid circuit (3), a valve device (12), a cooling device (8) for cooling the temperature control fluid and a heating device (9) for heating the temperature control fluid. The fluid circuit (3) has a subcircuit (4) in which the heating device (9) is arranged, wherein the device (1) is designed to activate heating operation of the heating device (9) when the motor vehicle is parked and when a predetermined heating condition is satisfied. Fluidic coupling of the subcircuit to the fluid circuit and supply and discharge of temperature control fluid heated in the subcircuit to and from the energy store (5) for electrical energy can be controlled by means of the valve device (12). The invention further relates to a method for controlling the temperature of an energy store for electrical energy of a motor vehicle, and to a motor vehicle comprising an abovementioned device.

The invention relates to a device (1) for controlling the temperature of an energy store (5) for electrical energy of a motor vehicle. The device comprises an energy store (5) for electrical energy and a fluid circuit (3) which can be and/or is thermally coupled to the energy store for controlling the temperature of the energy store, wherein a temperature control fluid can be supplied to and discharged from the energy store (5) through the fluid circuit. The fluid circuit (3) further comprises a pump device (10, 11) for transporting the temperature control fluid through the fluid circuit (3), a valve device (12), a cooling device (8) for cooling the temperature control fluid and a heating device (9) for heating the temperature control fluid. The fluid circuit (3) has a subcircuit (4) in which the heating device (9) is arranged, wherein the device (1) is designed to activate heating operation of the heating device (9) when the motor vehicle is parked and when a predetermined heating condition is satisfied. Fluidic coupling of the subcircuit to the fluid circuit and supply and discharge of temperature control fluid heated in the subcircuit to and from the energy store (5) for electrical energy can be controlled by means of the valve device (12). The invention further relates to a method for controlling the temperature of an energy store for electrical energy of a motor vehicle, and to a motor vehicle comprising an abovementioned device.

A battery temperature control device includes a heating medium circuit that connects a battery heat exchanger, an outside air heat exchanger, a heating medium pump, and a flow rate regulating unit. The outside air heat exchanger is connected in parallel to the battery heat exchanger. The flow rate regulating unit adjusts a flow rate of the heating medium in a first path through which the heating medium flows via at least the outside air heat exchanger and a flow rate of the heating medium in a second path through which the heating medium flows by detouring around the outside air heat exchanger. The control unit controls the flow rate regulating unit to adjust a ratio between a flow rate of the heating medium in the first path and a flow rate of the heating medium in the second path.

A battery temperature control device includes a heating medium circuit that connects a battery heat exchanger, an outside air heat exchanger, a heating medium pump, and a flow rate regulating unit. The outside air heat exchanger is connected in parallel to the battery heat exchanger. The flow rate regulating unit adjusts a flow rate of the heating medium in a first path through which the heating medium flows via at least the outside air heat exchanger and a flow rate of the heating medium in a second path through which the heating medium flows by detouring around the outside air heat exchanger. The control unit controls the flow rate regulating unit to adjust a ratio between a flow rate of the heating medium in the first path and a flow rate of the heating medium in the second path.

A method for controlling a temperature of a battery using a vehicle thermal management system including an HVAC subsystem including a refrigerant loop through which a refrigerant circulates, a battery cooling subsystem including a battery coolant loop through which a battery-side coolant circulates, and a battery chiller transferring heat between the refrigerant circulating in the refrigerant loop and the battery-side coolant circulating in the battery coolant loop may include: measuring a battery temperature and SOC value of the battery when charging the battery; determining a target temperature optimized for charging of the battery based on the measured battery temperature and SOC; and adjusting a temperature of the battery-side coolant by controlling at least one of the HVAC subsystem and the battery cooling subsystem according to whether the HVAC subsystem operates, a result of comparing an ambient temperature and the battery temperature, and a result of comparing the battery temperature and the target temperature.

A method for controlling a temperature of a battery using a vehicle thermal management system including an HVAC subsystem including a refrigerant loop through which a refrigerant circulates, a battery cooling subsystem including a battery coolant loop through which a battery-side coolant circulates, and a battery chiller transferring heat between the refrigerant circulating in the refrigerant loop and the battery-side coolant circulating in the battery coolant loop may include: measuring a battery temperature and SOC value of the battery when charging the battery; determining a target temperature optimized for charging of the battery based on the measured battery temperature and SOC; and adjusting a temperature of the battery-side coolant by controlling at least one of the HVAC subsystem and the battery cooling subsystem according to whether the HVAC subsystem operates, a result of comparing an ambient temperature and the battery temperature, and a result of comparing the battery temperature and the target temperature.