A refrigerant cycle device includes a compressor, a radiator, a first expansion valve, a second expansion valve, a first evaporator, a second evaporator, and a controller. The controller is configured to switch between a first evaporator priority control and a second evaporator priority control. During the first evaporator priority control, the controller controls a throttle opening of the second expansion valve based on at least one of a temperature of a first evaporator, a temperature of a refrigerant flowing through the first evaporator, and a temperature of an air having exchanged heat in the first evaporator. During the second evaporator priority mode, the controller controls the throttle opening based on a refrigerant state of the second evaporator. When the at least one of the temperatures is equal to or greater than a switching temperature, the second priority mode is switched to the first priority mode.

A battery temperature regulating apparatus to be applied to a vehicle includes an onboard battery, a temperature regulating plate configured to allow heat exchange between the onboard battery and a first heat medium flowing into the temperature regulating plate, a heat exchanger, a first passage configured to guide the first heat medium flowing out of the temperature regulating plate to the heat exchanger, and a second passage configured to guide the first heat medium flowing out of the heat exchanger to the temperature regulating plate. The heat exchanger includes a container and a first internal passage. The container is configured to accommodate a heat source that does not use a power supply for the vehicle. The first internal passage is disposed around the container in such a way as to allow heat exchange. The first internal passage is configured to allow the first passage to communicate with the second passage.

A battery temperature regulating apparatus to be applied to a vehicle includes an onboard battery, a temperature regulating plate configured to allow heat exchange between the onboard battery and a first heat medium flowing into the temperature regulating plate, a heat exchanger, a first passage configured to guide the first heat medium flowing out of the temperature regulating plate to the heat exchanger, and a second passage configured to guide the first heat medium flowing out of the heat exchanger to the temperature regulating plate. The heat exchanger includes a container and a first internal passage. The container is configured to accommodate a heat source that does not use a power supply for the vehicle. The first internal passage is disposed around the container in such a way as to allow heat exchange. The first internal passage is configured to allow the first passage to communicate with the second passage.

A battery temperature regulating apparatus includes an onboard battery, a temperature regulating plate, a heat exchanger including a container and a first internal passage, first to third passages, a radiator, a valve, a temperature sensor, and a control device including a processor and a memory. The processor is configured to execute, in cooperation with a program included in the memory, a process including determining whether a temperature of the onboard battery is higher than an upper threshold of a proper temperature range, determining whether a heat source is in the container at least based on the temperature of a first heat medium detected by the temperature sensor, and if the temperature of the onboard battery is higher than the upper threshold and that the heat source is in the container, controlling the valve in such a way as to allow the first heat medium to flow through the heat exchanger.

A battery temperature regulating apparatus includes an onboard battery, a temperature regulating plate, a heat exchanger including a container and a first internal passage, first to third passages, a radiator, a valve, a temperature sensor, and a control device including a processor and a memory. The processor is configured to execute, in cooperation with a program included in the memory, a process including determining whether a temperature of the onboard battery is higher than an upper threshold of a proper temperature range, determining whether a heat source is in the container at least based on the temperature of a first heat medium detected by the temperature sensor, and if the temperature of the onboard battery is higher than the upper threshold and that the heat source is in the container, controlling the valve in such a way as to allow the first heat medium to flow through the heat exchanger.

An external electric vehicle battery thermal management system is described. An electric vehicle thermal system provides external coolant to an internal battery thermal system of an electric vehicle. The internal battery thermal system includes a liquid-to-liquid heat exchanger to cool or warm the set of batteries of the electric vehicle. The external coolant is pumped through a first side of the heat exchanger and serves as the source to cool or heat internal coolant pumped through a second side of the heat exchanger. The external coolant and the internal coolant do not mix.

A thermal system of a vehicle, including: a heat exchanger; a accumulator and a compressor; a cabin evaporator; a cabin condenser; and a battery; wherein the heat exchanger, accumulator, compressor, cabin evaporator, cabin condenser, and battery are connected to allow refrigerant heat and cool a passenger cabin and the battery in a single closed and connected circuit directly without any dedicated heat exchanger; and wherein the heating and cooling of the cabin and the battery are controlled by settings of a plurality of valves.

The use of a refrigerant including 2,3,3,3-tetrafluoropropene for the cooling of a battery of an electric vehicle including at least one electrochemical cell including a negative electrode, a positive electrode and an electrolyte, the positive electrode including at least one oxide of formula LiNixMnyCozO2 with x+y+z=1, x>y and x>z, or LiNix′Coy′Alz′ with x′+y′+z′=1, x′>y′ and x′>z′, as electrochemically active material.

The use of a refrigerant including 2,3,3,3-tetrafluoropropene for the cooling of a battery of an electric vehicle including at least one electrochemical cell including a negative electrode, a positive electrode and an electrolyte, the positive electrode including at least one oxide of formula LiNixMnyCozO2 with x+y+z=1, x>y and x>z, or LiNix′Coy′Alz′ with x′+y′+z′=1, x′>y′ and x′>z′, as electrochemically active material.

A battery pack according to a first aspect of the present disclosure is configured to be installed in a vehicle, and includes a battery stack including a plurality of battery modules stacked in a first direction, an air supply member of which a position with respect to the battery stack is fixed, and that defines an internal space extending in a second direction orthogonal to the first direction along a first side face of the battery stack, and a partition member that divides the internal space of the air supply member in the first direction, into a plurality of air supply passages configured to each extend in the second direction and be connected to a blower device.