The present invention relates to a reversible air-conditioning circuit (1) comprising: •a main loop (A) comprising a compressor (3) and a water condenser (5) jointly connected to an auxiliary circuit, a first expansion device (7), an external evaporator-condenser (9), a second expansion device (15), and an evaporator (17), •a first bypass branch (B) comprising an internal condenser (13), the first bypass branch (B) connecting a first junction point (31) arranged downstream from the water condenser (5) to a second junction point (32) arranged upstream from the second expansion device (15), •a second bypass branch (C) connecting a third junction point (33) arranged downstream from the external evaporator-condenser (9) to a fourth junction point (34) arranged downstream from the evaporator (17), and •a third bypass branch (D) connecting a fifth junction point (35) arranged downstream from the third junction point (33) to a sixth junction point (36) arranged downstream from the first junction point (31).

This thermoregulation system (1) for an electrically driven vehicle (V), the vehicle comprising at least one electric machine (E), at least one battery (30), and at least one power electronics component (37), comprises a coolant circuit (5), a pump (7), coolant heat exchangers, connected to the coolant circuit (5) so that the coolant may circulate through them and comprising a main exchanger (9), configured for exchanging heat between the coolant and air coming from the outside of the vehicle (V), at least one battery exchanger (11), configured for exchanging heat between the coolant and said at least one battery (30), and at least one secondary exchanger (13, 36), configured for exchanging heat between the coolant and said at least one electric machine (E) and/or said at least one power electronics component (37). The coolant circuit (5) is divided in a first branch (B1), which comprises the main exchanger (9) and the at least one battery exchanger (11), a second branch (B2) which comprises the at least one secondary exchanger (13, 36), the coolant being circulated in parallel in the first and second branches (B1, B2), and a pump branch (PB) to which the pump (7) is connected, the pump branch (PB) being connected to the first and second branches (B1, B2) by an upstream and a downstream connection points (P1, P2) so that the coolant circulating in the pump branch (PB) is formed by a mix of the coolant circulating in the first branch (B1) and of the coolant circulating in the second branch (B2), and is directed towards the first and second branches (B1, B2) downstream the pump (7).

The invention relates to an electromagnetic proportional valve, preferably for refrigerant, which has the following: an armature of an electromagnet which is arranged so as to be able to be moved axially between an idle position, an activation position and working positions and on which an activation element is arranged; a piston which is constructed as a hollow piston and which has at a first axial end region a first opening toward a supply of the expansion valve and at a second axial end region a second opening toward a pressure compensation space; and a blocking member which is constructed to close the second opening, wherein the piston is arranged so as to be able to be axially displaced and wherein the piston is constructed to block a fluid passage as a blocking element of a main valve device, wherein the fluid passage of the main valve device is blocked in the idle position of the armature, wherein the activation element is constructed to act in the activation position of the armature on the blocking member in such a manner that it releases the second opening at least in regions, and wherein the fluid passage of the main valve device is open in the working positions of the armature. The invention further relates to a system having such a proportional valve.

A heat pump system for a vehicle is provided. The system includes an engine cooling device having a first radiator and a first water pump connected via a first coolant line. An electrical equipment cooling device includes a second radiator and a second water pump connected via a second coolant line. A battery module is disposed in a battery coolant line selectively connected with the second coolant line. An air conditioner is connected with the battery coolant line and includes a third water pump and a cooler disposed in the first connection line. A heating device is connected with the first coolant line via a third valve and includes a fourth water pump and a heater disposed in the second connection line. A centralized energy (CE) module supplies a coolant to the air conditioner, is connected with the coolant lines to supply a high-temperature coolant to the heating device.

A fluid heat exchange assembly includes a fluid control module and a fluid heat exchange module, the fluid control module includes a first connecting lateral portion, the fluid heat exchange module includes a second connecting lateral portion; the first connecting lateral portion and the second connecting lateral portion are oppositely and sealingly arranged; the fluid heat exchange module includes a heat exchange core and a connecting component fixed by welding; the fluid control module includes at least a first flow passage and a second flow passage; the fluid heat exchange module includes a first fluid communication cavity, and the second flow passage is in communication with the first fluid communication cavity; the connecting component includes a connecting channel, the connecting channel penetrates through the connecting component. The fluid heat exchange assembly reduces pipeline arrangement and is of a small and compact integral structure.

A valve device includes: a driving source making rotational motion; a rotated part provided rotatably around a predetermined axis; and a fluid passage portion having a flow hole for passing a fluid. The valve device further includes: a gear mechanism having gears to transmit rotational motion of the driving source to the rotated part by engagement between the gears to rotate the rotated part; and a biasing part biasing the rotated part toward one side in a circumferential direction with the predetermined axis at the center. The rotated part includes a rotor increasing or reducing an opening of the flow hole in conjunction with rotation of the rotated part and is rotated according to rotational motion of the driving source while being biased toward the one side in the circumferential direction by the biasing part.

An air-conditioning apparatus for a vehicle may include a radiator module; a refrigerant module; a hot portion for heat-exchanging with a condenser and a heater core of an internal air-conditioning module; a cold portion for heat-exchanging with an evaporator and a cooling core of the internal air-conditioning module; an electric portion for heat-exchanging with an electric component; a battery portion for heat-exchanging with a high-voltage battery; a connection module for connecting the hot portion, the electric portion, or the battery portion to any one or more radiators among a first radiator, a second radiator, and a third radiator; and a control unit configured of controlling the operations of a compressor and a valve.

A heat pump system of a vehicle controls a temperature of a battery module by using one chiller in which a refrigerant and a coolant are heat-exchanged, and recovers waste heat generated from an electrical component and a battery module to use it for indoor heating, thereby improving heating performance and efficiency, and the heat pump increases a flow rate of a refrigerant by applying a gas injection part that selectively operates in a heating mode of the vehicle, thereby maximizing heating performance.

A heat pump system for a vehicle according to an embodiment of the present disclosure may control a temperature of a battery module by using one chiller in which a refrigerant and a coolant are heat-exchanged, may recover waste heat generated from an electrical component and the battery module to use it for indoor heating, thereby improving the heating performance and efficiency, and may increase a flow rate of the refrigerant by applying a gas injection part that selectively operates in a heating mode of a vehicle, thereby maximizing heating performance.

An air conditioning device for an electric vehicle includes: a housing having an air conditioning passage connecting an air inlet port to an air discharge port; an evaporator, an air heater, and an electric heater, which are positioned in series in the air conditioning passage in the housing; and a bypass door positioned after the evaporator in the air conditioning passage in the housing and configured to selectively allow some of air passing through the evaporator to bypass the air heater and the electric heater to the air discharge port.