KR20170127351A - Refrigerant cycling device for vehicle - Google Patents

Abstract

The present invention relates to a refrigerating cycle apparatus for a vehicle. According to the present invention, the refrigerating cycle apparatus for the vehicle comprises: a compressor connected to a compressor intake flow path; and a compressor discharge flow path; a condenser connected to the compressor discharge flow path and a condenser exit flow path; a first expansion unit connected to the condenser exit flow path; a battery module heat exchanger connected to the first expansion unit with a battery module heat exchanger entrance flow path to have a cooling flow path, which cools a plurality of battery modules, being connected to a battery module heat exchanger exit flow path; an evaporator connected to the compressor intake flow path; an overcooling heat exchanger which includes: a first flow path connected to the battery module heat exchanger exit flow path; a connection flow path which guides a refrigerant having passed through the first flow path; and a second flow path through which the refrigerant flowing in the connection flow path passes, exchanging heat with the refrigerant passing through the first flow path, in order to be connected to the evaporator and the evaporator connection flow path; and a second expansion unit installed on the connection flow path. The present invention is able to cool the battery module heat exchanger to a higher temperature than that of the evaporator, thereby minimizing frost on the battery modules.

Description

[0001] The present invention relates to a refrigeration cycle apparatus for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating cycle apparatus for a vehicle, and more particularly, to a refrigerating cycle apparatus for a vehicle for cooling a battery module of a vehicle.

The vehicle may be provided with a battery for supplying electricity to the electric motor, a motor controller for controlling the electric motor, and the like.

A battery installed in a vehicle can be charged from a regenerative power source or a charger, and can supply electric power to an electric motor when the vehicle is running.

The performance of a battery can be largely determined by its temperature, and the temperature rises during charging and discharging.

As the battery continues to be used, electrolyte degradation occurs, resulting in poor battery performance and shortened life span.

The battery may include a plurality of battery modules, and the plurality of battery modules are preferably managed to minimize a temperature difference therebetween.

The vehicle may be provided with a battery cooling device for cooling the battery module to prevent overheating of the battery module to maintain the performance of the battery module.

The battery cooling device can be classified into an air-cooled battery cooling device, a water-cooled battery cooling device, and a refrigerant-type battery cooling device, depending on the cooling method.

An air-cooled cooler uses a fan to forcibly vent air inside the battery to cool the battery. However, air-cooled battery cooling systems are less efficient than other cooling systems.

The water-cooled battery cooling apparatus includes a cooling water tube arranged to allow cooling water to pass therethrough and to be in contact with the battery, a radiator having a heat radiation flow path through which the cooling water passes by being radiated by air, a connection tube connecting the cooling water tube and the radiator, And may include a circulation pump.

When the circulation pump is driven, the cooling water in the connection tube flows to the cooling water tube, absorbs the heat of the battery in the cooling water tube, and is then transferred to the radiator. The cooling water transferred to the radiator can dissipate heat to the air blown to the radiator. That is, the cooling water circulates the cooling water tube and the radiator and can dissipate the battery.

A refrigerant type battery cooling apparatus includes a compressor for compressing a refrigerant, a condenser for condensing the refrigerant compressed in the compressor, an evaporator for cooling the vehicle room,

And a refrigeration cycle apparatus including a battery module heat exchanger. The evaporator and the battery module heat exchanger may be connected in parallel with the refrigerant passage, and the refrigerant may be dispersed in the evaporator and the battery module heat exchanger and evaporated in each of the evaporator and the battery module heat exchanger.

FIG. 1 is a view showing a refrigerant flow in a refrigerating cycle apparatus for a vehicle according to the prior art, and FIG. 2 is a P-h diagram of the refrigerating cycle apparatus for a vehicle shown in FIG.

The conventional refrigeration cycle apparatus for a vehicle shown in Fig. 1 includes a compressor 1 for compressing refrigerant, a condenser 2 for condensing the refrigerant compressed in the compressor 1, a condenser 2 for expanding the refrigerant condensed in the condenser 2, A battery module heat exchanger 4 for evaporating the refrigerant expanded by the first expansion valve 3 and cooling the battery module M and a condenser 2 for condensing the refrigerant condensed in the condenser 2, A second expansion valve 6 for expanding the refrigerant, and an evaporator 7 for cooling the vehicle room where the refrigerant expanded by the second expansion valve 6 is evaporated. The first expansion valve 3 and the battery module heat exchanger 4 may be installed in a first branch flow path between the condenser 2 and the compressor 1 and the second expansion valve 6 and the evaporator 7 And may be installed in a second branch flow path connected in parallel with the first branch flow path.

The battery module (M) and the battery module heat exchanger (4) may be installed together inside the battery pack (P).

1 and 2, when the compressor 1 is driven, the superheated gaseous refrigerant a can be discharged from the compressor 1, and the superheated gaseous refrigerant a can be discharged from the condenser 2 It can be condensed and subcooled. The liquid refrigerant b condensed in the condenser 2 and subcooled flows to the first expansion mechanism 3 and the second expansion mechanism 6 and is discharged by the first expansion mechanism 3 and the second expansion mechanism 6 Respectively.

The refrigerant c expanded by the second expansion mechanism 6 can be flown to the evaporator 7 in the two-phase state and evaporated in the evaporator 7, and in the evaporator 7, the superheated gaseous refrigerant d Can be discharged and sucked into the compressor (1).

On the other hand, the refrigerant expanded by the first expansion mechanism (3) can flow into the battery module heat exchanger (4) in a two-phase state, and can be evaporated in the battery module heat exchanger (4). In the battery module heat exchanger 4, the superheated gaseous refrigerant f can be discharged, and the superheated gaseous refrigerant f can be sucked into the compressor 1.

 In the case of the refrigeration cycle apparatus for a vehicle shown in FIG. 1, the two-phase refrigerant after the first expansion mechanism 3 is heat-exchanged with the battery module heat exchanger 5 to evaporate. This evaporation process is isothermal, A temperature change occurs in the superheated state after the saturated gas line.

When the low-temperature refrigerant passing through the battery module heat exchanger 5 is below the dew point temperature of the humidifier in the battery pack, the humidifier can be condensed and condensed on the surface of the battery module M, There is a problem that the safety and reliability of the battery module M is lowered.

An object of the present invention is to provide a refrigeration cycle apparatus for a vehicle which can cool a battery module heat exchanger to a temperature higher than that of an evaporator, thereby minimizing frosting on the battery module.

A refrigeration cycle apparatus for a vehicle according to an embodiment of the present invention includes a compressor connected to a compressor suction passage and a compressor discharge passage; A condenser connected to the compressor discharge passage and connected to a condenser outlet passage; A first expansion mechanism connected to the condenser outlet passage; A battery module heat exchanger connected to the first expansion mechanism and an inlet flow path of the battery module heat exchanger and having a cooling flow path for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger; An evaporator connected to the compressor suction passage; A first flow path connected to the battery module heat exchanger outlet flow path, a connection flow path through which the refrigerant having passed through the first flow path is guided, and a refrigerant flowing through the connection flow path, A supercooling heat exchanger having a second flow path connected to the evaporator and the evaporator; And a second expansion mechanism provided in the connection passage.

A bypass flow path connecting the condenser outlet flow path and the connection flow path; And a bypass valve provided in the bypass passage.

The bypass flow path may be connected between the second expansion mechanism and the first flow path.

And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, and the bypass valve.

The compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is controlled to an opening degree for expanding the refrigerant, and the bypass valve can be controlled in an open cooling mode.

The compressor may be driven if the temperature sensed by the temperature sensor is lower than the set temperature and the vehicle room to be cooled by the evaporator is thermon-on, The first expansion mechanism may be closed, the second expansion mechanism may be adjusted to an opening for expanding the refrigerant, and the bypass valve may be open.

Wherein the compressor is driven, the first expansion mechanism is adjusted to an opening for expanding the refrigerant, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, and the bypass valve is closed have.

Wherein the compressor is driven and the first expansion mechanism is regulated to an opening degree for expanding the refrigerant when the vehicle room to be cooled by the evaporator is thermo-on in the traveling mode of the vehicle, and the second expansion mechanism is controlled by the opening for expanding the refrigerant And the bypass valve may be closed.

And a temperature sensor for sensing the temperature of the battery module. When the temperature sensed by the temperature sensor exceeds a predetermined temperature in a running mode of the vehicle, and the vehicle room to be cooled by the evaporator is thermon-on, And the first expansion mechanism can be adjusted to an opening degree for expanding the refrigerant, the second expansion mechanism can be adjusted to an opening for expanding the refrigerant, and the bypass valve can be closed.

According to another aspect of the present invention, there is provided a refrigeration cycle apparatus for a vehicle, comprising: a compressor connected to a compressor suction passage and a compressor discharge passage; A condenser connected to the compressor discharge passage and connected to a condenser outlet passage; A first expansion mechanism connected to the condenser outlet passage; A battery module heat exchanger connected to the first expansion mechanism and an inlet flow path of the battery module heat exchanger and having a cooling flow path for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger; An evaporator connected to the compressor suction passage; A gas-liquid separator connected to the outlet port of the battery module heat exchanger, the gas-liquid separator being connected to the compressor suction port and the gaseous coolant outlet flow path and connected to a liquid refrigerant outlet flow path through which the liquid refrigerant flows; And a second expansion mechanism connected to the liquid refrigerant outlet flow path and connected to the evaporator and the evaporator connection flow path.

And an opening / closing valve provided in the gaseous refrigerant outlet passage.

A bypass flow path connecting the condenser outlet flow path and the liquid refrigerant outlet flow path; And a bypass valve provided in the bypass passage.

And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, the opening / closing valve, and the bypass valve.

Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is controlled to an opening degree for expanding the refrigerant, the opening / closing valve is closed, and the bypass valve is open .

The temperature sensor may further include a temperature sensor for sensing a temperature of the battery module. When the temperature sensed by the temperature sensor is lower than a predetermined temperature and the vehicle room to be cooled by the evaporator is thermionic, Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the opening / closing valve is closed, and the bypass valve is open.

Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on / off valve is open, and the bypass valve is closed .

Wherein the compressor is driven when the temperature sensed by the temperature sensor exceeds the set temperature and the vehicle room to be cooled by the evaporator is thermo-off, The expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the opening / closing valve is open, and the bypass valve is closed.

The compressor is driven and each of the first expansion mechanism and the second expansion mechanism is controlled to an opening degree for expanding the refrigerant and the simultaneous cooling mode in which the opening and closing valve is open and the bypass valve is closed can be controlled.

And a temperature sensor for sensing a temperature of the battery module, wherein when the temperature sensed by the temperature sensor exceeds the set temperature and the vehicle room to be cooled by the evaporator is thermionic, the compressor is driven, Each of the expansion mechanism and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the on-off valve is open, and the bypass valve is closed.

According to another aspect of the present invention, there is provided a refrigeration cycle apparatus for a vehicle, comprising: a compressor connected to a compressor suction passage and a compressor discharge passage; A condenser connected to the compressor discharge passage and connected to a condenser outlet passage; A first expansion mechanism connected to the condenser outlet passage; A battery module heat exchanger connected to an inlet channel of the battery module heat exchanger and formed with a cooling channel for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger; A gas-liquid separator connected to the outlet port of the battery module heat exchanger and having a gaseous refrigerant outlet flow path through which the gaseous refrigerant is guided is connected to a compressor suction flow path and a liquid refrigerant outlet flow path through which the liquid refrigerant flows out; A second expansion mechanism connected to the liquid refrigerant outlet flow path; An evaporator connected to the second expansion mechanism and the evaporator connecting flow path and connected to the evaporator outlet flow path; An open / close valve provided in the gaseous refrigerant outlet passage; A flow path switching valve connected to the evaporator outlet flow path and connected to the compressor suction flow path and the suction flow path connection path and connected to the ejector suction flow path; And an ejector connected to the first expansion mechanism and the ejector inlet flow path and connected to the ejector suction path and the inlet port of the battery module heat exchanger.

The ejector includes a suction portion connected to the ejector inlet passage and the ejector suction passage and having a nozzle therein; A diffuser connected to the inlet port of the battery module heat exchanger; And a mixing portion between the suction portion and the diffuser.

A bypass flow path connecting the condenser outlet flow path and the liquid refrigerant outlet flow path; And a bypass valve provided in the bypass passage.

And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, the opening / closing valve, the flow path switching valve, and the bypass valve.

Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the open / close valve is closed, the flow path switching valve is in a compressor flow mode, The valve can be controlled to an open cooling mode.

Wherein the compressor is driven when the temperature sensed by the temperature sensor is lower than the set temperature and the vehicle room to be cooled by the evaporator is thermionic, The expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the opening / closing valve is closed, the flow path switching valve is in a compressor flow mode, and the bypass valve is open.

Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on / off valve is opened, and the bypass valve is closed .

Wherein the compressor is driven when the temperature sensed by the temperature sensor exceeds the set temperature and the vehicle room to be cooled by the evaporator is thermo-off, The expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on-off valve is opened, and the bypass valve is closed.

Wherein the compressor is driven, each of the first expansion mechanism and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the open / close valve is opened, the flow path switching valve is an ejector flow mode, In cooling mode.

Wherein the compressor is driven when the temperature sensed by the temperature sensor is equal to or higher than a predetermined temperature and the vehicle room to be cooled by the evaporator is thermionic, Each of the expansion mechanism and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the opening / closing valve is opened, the flow path switching valve is in the ejector flow mode, and the bypass valve is closed.

According to the embodiment of the present invention, the refrigerant does not overheat while passing through the battery module heat exchanger, the heat exchanging module heat exchanger can cool the battery module at a higher temperature than the evaporator, and the inside of the battery pack can be maintained below the dew point temperature of the humidifier have.

1 is a view showing a refrigerant flow of a refrigeration cycle apparatus for a vehicle according to a related art,
2 is a Ph diagram of the refrigeration cycle apparatus for a vehicle shown in Fig.
3 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the first embodiment of the present invention is in a cooling mode,
4 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the first embodiment of the present invention is in the simultaneous cooling mode,
5 is a control block diagram of a refrigeration cycle apparatus for a vehicle according to the first embodiment of the present invention;
FIG. 6 is a ph diagram when the refrigeration cycle apparatus for a vehicle according to the first embodiment of the present invention is in the simultaneous cooling mode,
7 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the second embodiment of the present invention is in a cooling mode,
8 is a view showing a refrigerant flow when the refrigeration cycle apparatus for a vehicle according to the second embodiment of the present invention is in the battery module cooling mode,
9 is a view showing a refrigerant flow when the refrigeration cycle apparatus for a vehicle according to the second embodiment of the present invention is in the simultaneous cooling mode,
10 is a control block diagram of a refrigeration cycle apparatus for a vehicle according to a second embodiment of the present invention.
11 is a ph diagram when the refrigeration cycle apparatus for a vehicle according to the second embodiment of the present invention is in the simultaneous cooling mode,
12 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the third embodiment of the present invention is in a cooling mode,
13 is a view showing a refrigerant flow when the refrigeration cycle apparatus for a vehicle according to the third embodiment of the present invention is in a battery module cooling mode,
14 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the third embodiment of the present invention is in the simultaneous cooling mode,
Fig. 15 is an enlarged view of the inside of the ejector shown in Fig. 14,
16 is a control block diagram of a refrigeration cycle apparatus for a vehicle according to a third embodiment of the present invention.
17 is a ph diagram when the refrigeration cycle apparatus for a vehicle according to the third embodiment of the present invention is in the simultaneous cooling mode.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 3 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the first embodiment of the present invention is in a cooling mode, and FIG. 4 is a flow chart showing the flow of refrigerant when the refrigerating cycle apparatus for a vehicle according to the first embodiment of the present invention is in the simultaneous cooling mode FIG. 5 is a control block diagram of a refrigerating cycle apparatus for a vehicle according to a first embodiment of the present invention, and FIG. 6 is a ph diagram of a refrigerating cycle apparatus for a vehicle according to the first embodiment of the present invention.

The refrigeration cycle apparatus for a vehicle includes a compressor 1, a condenser 2, a first expansion mechanism 3, a battery module heat exchanger 4, a supercooling heat exchanger 5, a second expansion mechanism 6, And an evaporator (7).

The compressor (1) compresses the refrigerant at the time of driving. The compressor 1 may be connected to a compressor suction passage 11 and a compressor discharge passage 12. The refrigerant can be sucked into the compressor 1 through the compressor suction flow path 11 and can be discharged to the compressor discharge flow path 12 after being compressed by the compressor 1. [

The compressor suction line 11 may be provided with an accumulator 15 in which liquid refrigerant is contained and the gaseous refrigerant flows to the compressor 1.

The condenser (2) is connected to the compressor discharge passage (12) to condense the refrigerant.

The condenser 2 may be connected to a condenser outlet flow passage 21. The refrigerant condensed in the condenser (2) can be discharged to the condenser outlet flow path (21).

The vehicle may further include an outdoor fan (28) for blowing air toward the condenser (2).

The first expansion mechanism (3) can be connected to the condenser outlet flow passage (21). The refrigerant condensed in the condenser 2 can be introduced into the first expansion mechanism 3 through the condenser outlet flow passage 21 and the refrigerant can be expanded by the first expansion mechanism 3. [

The first expansion mechanism (3) can be constituted by an expansion valve such as EEV or LEV capable of controlling the opening degree thereof and shutting off the flow of the refrigerant at the time of full closing.

The present embodiment can be controlled in a simultaneous cooling mode for supplying the refrigerant to both the battery module heat exchanger 4 and the evaporator 7. [ In this simultaneous cooling mode, the first expansion mechanism (3) and the second expansion mechanism (6) can expand the refrigerant to different pressures.

In the simultaneous cooling mode, the first expansion mechanism (3) can expand the refrigerant to a pressure higher than that of the second expansion mechanism (6). When the second expansion mechanism 6 inflates the refrigerant to the first pressure, the first expansion mechanism 3 can expand the refrigerant to a second pressure higher than the first pressure.

In the simultaneous cooling mode, each of the first expansion mechanism (3) and the second expansion mechanism (6) can be controlled to an opening degree for expanding the refrigerant, and the first expansion mechanism (3) The second expansion mechanism 6 can be controlled to an opening degree for expanding the refrigerant to a pressure lower than that of the first expansion mechanism 3. [

The battery module heat exchanger (4) may be connected to the first expansion mechanism (3) and the battery module heat exchanger inlet flow path (41).

The battery module heat exchanger 4 may be provided with a cooling channel 42 for cooling a plurality of battery modules M. [ The plurality of battery modules M can be loaded on the battery module heat exchanger 4 and the plurality of battery modules M can be cooled by the refrigerant passing through the cooling channel 42 of the battery module heat exchanger 4 .

The plurality of battery modules M may constitute the battery module heat exchanger 4 and the battery pack P. The battery pack P includes a carrier 107 mounted on the vehicle, a battery module heat exchanger 4 seated on the carrier 107, and a plurality of battery modules M seated on the battery module heat exchanger 4 . The plurality of battery modules M can be cooled and supported by the battery module heat exchanger 4 in a state where the battery module heat exchanger 4 is mounted on the battery module heat exchanger 4. [ The battery pack P may further include a top cover 108 covering an upper surface of the carrier 107.

The battery module heat exchanger (4) may be connected to the battery module heat exchanger outlet flow path (43).

One end of the cooling flow path 42 may be connected to the battery module heat exchanger inlet flow path 41 and the other end of the cooling flow path 42 may be connected to the battery module heat exchanger outlet flow path 43.

The refrigerant expanded by the first expansion mechanism 3 can be introduced into the cooling channel 42 through the inlet port 41 of the battery module heat exchanger 41 and the refrigerant passes through the cooling channel 42, Can be cooled. The refrigerant in the cooling channel 42 may flow out to the outlet port 43 of the battery module heat exchanger.

The supercooling heat exchanger (5) can heat exchange the refrigerant that has passed through the battery module heat exchanger (4) with the refrigerant expanded by the second expansion mechanism (6).

The supercooling heat exchanger 5 may be connected to the battery module heat exchanger 4 and the battery module heat exchanger outlet flow path 43. The supercooling heat exchanger 5 may be connected to the evaporator 7 and the evaporator connecting passage 71.

The supercooling heat exchanger 5 includes a first flow path 52 through which the refrigerant flowing in the battery module heat exchanger 4 passes and a connection flow path 53 through which the refrigerant having passed through the first flow path 52 is guided, And a second flow path 55 in which the refrigerant flowing in the connection flow path 53 exchanges heat with the refrigerant passing through the first flow path 52.

The supercooling heat exchanger 5 may include a heat exchanger 51 composed of a dual-pipe heat exchanger or a plate-type heat exchanger in which a first flow path 52 and a second flow path 55 are disposed with a heat transfer member interposed therebetween. The connecting flow paths 53 and 54 are located outside the heat exchanger 51 and one end of the connecting flow paths 53 and 54 is connected to the first flow path 52. The other end of the connecting flow paths 53 and 54 is connected to the heat exchanger 51, And can be connected to the two flow paths 55 in a communicative manner.

The first flow path 52 may be connected to the battery module heat exchanger outlet flow path 43. The refrigerant flowing out of the battery module heat exchanger 4 may flow into the first flow path 52 through the battery module heat exchanger outlet flow path 43.

The connecting flow paths 53 and 54 may connect the first flow path 52 and the flow path 55. One end of the connecting flow paths 53 and 54 may be connected to the first flow path 52 and the other end may be connected to the second flow path 55. The refrigerant flowing out of the first flow path 52 may flow into the second flow path 55 after passing through the connection flow path 53.

The connection flow passages 53 and 54 include a first connection passage 53 connecting the first flow path 52 and the second expansion mechanism 6 and a second connection flow path 53 connecting the second expansion mechanism 6 and the second flow path 55 And a second connection passage 54 for connecting the first connection passage 54 and the second connection passage 54.

The second flow path 55 may be connected to the evaporator 7 and the evaporator connecting flow path 71. The refrigerant flowing out of the second flow path (55) can flow to the evaporator (7) through the evaporator connecting passage (71).

And the second expansion mechanism 6 may be installed in the connection flow passages 53 and 54. [ The second expansion mechanism 6 can expand the refrigerant passing through the first flow path 52 and the refrigerant expanded by the second expansion mechanism 6 can flow into the second flow path 55.

In the refrigerating cycle apparatus for a vehicle, the refrigerant can be multi-stage expanded by the first expansion mechanism (3) and the second expansion mechanism (6).

The refrigerant having passed through the first flow path 52 can flow into the second expansion mechanism 6 after passing through the first connection flow path 53 and the refrigerant flowing out of the second expansion mechanism 6 can flow into the second connection And then flows into the second flow path 55 after passing through the flow path 54.

The second expansion mechanism (6) can be composed of an expansion valve such as EEV or LEV capable of controlling the opening degree thereof and shutting off the flow of the refrigerant at the time of full closing.

The evaporator (7) can be connected to the compressor suction flow path (11). The evaporator 7 may be connected to the second flow path 55 of the supercooling heat exchanger 5 and the evaporator connecting flow path 71.

The refrigerant that has flowed from the evaporator connecting passage 71 to the evaporator 7 can be evaporated while passing through the evaporator 7 and the refrigerant evaporated in the evaporator 7 passes through the compressor suction flow passage 11, Lt; / RTI >

The evaporator 7 can evaporate the refrigerant that has passed through the second flow path 55 after being expanded by the second expansion mechanism 6. [ The evaporator 7 may constitute an HVAC (Heating, Ventilation, Air conditioner) of the vehicle.

The air conditioner of the vehicle may include an air conditioning fan 77 for blowing air toward the evaporator 7. When the air conditioning fan 77 is driven, air in the passenger compartment or outside air can be exchanged with the evaporator 7 while passing through the evaporator 7, and then blown into the passenger compartment.

The compressor 1, the outdoor fan 28 and the air conditioning fan 77 can be driven and the air can be cooled by the evaporator 7 and blown into the vehicle room.

When the refrigerating cycle apparatus for a vehicle includes the supercooling heat exchanger 5, the two-phase refrigerant may flow out in the battery module heat exchanger 4. [ The two-phase refrigerant flowing out of the battery module heat exchanger 4 is expanded by the second expansion mechanism 6 while passing through the first flow path 52, is radiated to the refrigerant passing through the second flow path 55, . The subcooled refrigerant passing through the first flow path (52) can be expanded into the two-phase refrigerant by the second expansion mechanism (6). The refrigerant expanded by the second expansion mechanism (6) can absorb the heat of the refrigerant passing through the first flow path (52) while passing through the second flow path (55). The refrigerant passing through the second flow path (55) can be flowed to the evaporator (7). The refrigerant flowing into the evaporator 7 can be overheated while passing through the evaporator 7. In the evaporator 7, the superheated gaseous refrigerant can be discharged, and the superheated gaseous refrigerant can be sucked into the compressor 1.

4, the refrigerant condensed in the condenser 2 after being compressed in the compressor 1 is supplied to the first expansion mechanism 3, the battery module heat exchanger 4, the supercooling heat exchanger 5 The battery module heat exchanger 4 and the evaporator 7 sequentially pass through the first flow path 52, the second expansion mechanism 6, the second flow path 55 of the supercooling heat exchanger 5, and the evaporator 7, (7) can be sequentially cooled.

In this case, the vehicle refrigeration cycle device may be a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together.

On the other hand, the refrigerating cycle apparatus for a vehicle includes bypass flow paths 81 and 82 for connecting the condenser outlet flow path 21 and the connection flow paths 53 and 54; And a bypass valve 83 provided in the bypass flow paths 81 and 82. [

The bypass flow paths 81 and 82 may be connected between the second expansion mechanism 6 and the first flow path 52 among the connection flow paths 53 and 54. [ The bypass flow paths 81 and 82 may be connected to the first connection flow path 53.

The refrigerant that has passed through the bypass flow paths 81 and 82 can flow into the second expansion mechanism 6 through the first connection flow path 53 and can be expanded by the second expansion mechanism 6. [

The bypass flow paths 81 and 82 include a first bypass flow path 81 for connecting the condenser outlet flow path 21 and the bypass valve 83 and a second bypass flow path 81 for connecting the second expansion mechanism 6 and the first flow path 52 and the second bypass flow path 82 connecting the bypass valve 83 with each other.

The first bypass passage 81 may be connected between the condenser 2 and the first expansion mechanism 3 in the condenser outlet passage 21.

The bypass valve 83 may be an open / close valve such as a solenoid valve for interrupting the refrigerant in the bypass passage 82.

When the first expansion mechanism 3 is closed and the bypass valve 83 is open, the refrigerant condensed in the condenser 2 flows through the bypass flow paths 81 and 82 and the bypass valve 83 The first expansion mechanism 3 and the battery module heat exchanger 4 can be bypassed. The refrigerant bypassed from the first expansion mechanism 3 and the battery module heat exchanger 4 can be flowed into the connection flow passages 53 and 54 and the bypass flow passages 81 and 82, The refrigerant that has flowed into the second expansion mechanism (54) can be expanded into the two-phase refrigerant by the second expansion mechanism (6). The refrigerant expanded by the second expansion mechanism 6 can pass through the second flow path 55 of the supercooling heat exchanger 5 and flow through the second flow path 55 of the supercooling heat exchanger 5, The refrigerant can be evaporated while passing through the evaporator 7, and can be sucked into the compressor 1 and compressed.

That is, the refrigerant condensed in the condenser 2 after being compressed in the compressor 1 is cooled by the bypass valve 83, the second expansion mechanism 6 and the supercooling heat exchanger The evaporator 7 can be cooled by sequentially passing through the second flow path 55 of the evaporator 5 and the evaporator 7 and in this case the refrigerating cycle device for the vehicle is arranged to bypass the battery module heat exchanger 4 And then the evaporator 7 is cooled by itself.

5, the refrigeration cycle apparatus for a vehicle includes a compressor 1, a control unit 90 for controlling the first expansion mechanism 3, the second expansion mechanism 6, and the bypass valve 83 .

The control unit 90 can control the outdoor fan 28 and the air conditioning fan 77 together with the compressor 1. [

The vehicle refrigeration cycle apparatus may further include a temperature sensor 92 for sensing the temperature of the battery module M. [

The temperature sensor 92 may be installed in each of the plurality of battery modules M and the controller 90 may select an average of the temperatures sensed by the temperature sensors installed in each of the plurality of battery modules M as the temperature of the battery module M. It is possible to do. The controller 90 may select the temperature sensed by the temperature sensor installed in any one of the plurality of battery modules M as the temperature of the battery module.

If the temperature sensed by the temperature sensor 92 is lower than the set temperature, the battery module M may be thermo-off. Conversely, if the temperature sensed by the temperature sensor 92 is above the set temperature, the battery module M may be thermionic.

The vehicle may be provided with a desired temperature input unit 94 for inputting a desired temperature of the vehicle. The vehicle may be provided with a vehicle room temperature sensor 96 for sensing the temperature of the vehicle room.

The passenger can input the desired temperature of the passenger compartment through the desired temperature input unit 94.

If the temperature sensed by the vehicle temperature sensor 96 is below the lower limit temperature of the desired temperature, the passenger compartment may be thermo-off. Conversely, if the temperature sensed by the vehicle temperature sensor 96 is greater than or equal to the upper limit temperature of the desired temperature, the vehicle room may be thermone.

The control unit 90 controls the compressor 1, the first expansion mechanism 3, the bypass valve 83 and the second expansion mechanism 6 so that the refrigerant flows to the evaporator 7 when the vehicle room is thermally turned on Can be controlled.

If the vehicle room is thermally on, the control unit 90 can drive the compressor 1 and the second expansion mechanism 6 can be controlled to an opening degree in which the refrigerant expands. The control unit 90 may control the first expansion mechanism 6 to open the expansion of the refrigerant or open the bypass valve 83. [

The control unit 90 can close the bypass valve 83 when the first expansion mechanism 6 is controlled by the opening degree at which the refrigerant expands. On the contrary, when the control unit 90 closes the first expansion valve 6, the bypass valve 83 can be opened.

The refrigeration cycle apparatus for a vehicle can control the refrigerant not to flow to the evaporator (7) when the passenger compartment is thermo-off. If the vehicle is thermo-off, the compressor 1 may not be driven.

Hereinafter, with reference to FIG. 3, a case where the refrigerating cycle apparatus for a vehicle cools the evaporator 7 in a cooling mode will be described.

The refrigerating cycle apparatus for a vehicle is arranged such that the compressor 1 is driven and the first expansion mechanism 3 is closed and the second expansion mechanism 6 is regulated to an opening for expanding the refrigerant and the bypass valve 82 is opened And can be controlled in the cooling mode.

The cooling mode may be implemented when the vehicle is thermally turned on and the cooling of the battery module M is unnecessary.

When the temperature of the battery module M is lower than the set temperature, cooling of the battery module M is not required, and the control unit 90 can drive the compressor 1 only for cooling the vehicle room.

When the temperature detected by the temperature sensor 92 is lower than the set temperature and the vehicle room to be cooled by the evaporator 7 is thermo-on, the cooling mode of the vehicle may be performed. In the cooling mode, the compressor 1 can be driven, the first expansion mechanism 3 can be closed, the second expansion mechanism 6 can be adjusted to the opening for expanding the refrigerant, and the bypass valve 83 ) Can be opened.

In the cooling mode, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the gaseous refrigerant. The gaseous refrigerant discharged from the compressor (1) flows to the condenser (2) and can be condensed and subcooled. The subcooled liquid refrigerant can be discharged in the condenser 2 and the subcooled liquid refrigerant b can pass through the bypass flow paths 81 and 82 and the bypass valve 83 and the second expansion mechanism 6). ≪ / RTI > The refrigerant expanded by the second expansion mechanism 6 can flow to the evaporator 7 after passing through the flow path 55 of the supercooling heat exchanger 5 and the superheated gaseous refrigerant is discharged from the evaporator 7 And this gaseous refrigerant can be sucked into the compressor 1.

In the cooling mode as described above, the evaporator 7 can cool the passenger compartment.

Hereinafter, a case where the refrigeration cycle apparatus for a vehicle is a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together will be described with reference to FIGS. 4 and 6 as follows.

The refrigeration cycle apparatus for a vehicle is a refrigeration cycle apparatus in which a compressor 1 is driven, a first expansion mechanism 3 is controlled to an opening degree for expanding a refrigerant, a second expansion mechanism 6 is controlled to an opening degree for expanding a refrigerant, (83) is closed.

 The simultaneous cooling mode may be implemented when the vehicle is thermally turned on and cooling of the battery module M is required.

If the temperature detected by the temperature sensor 92 in the running mode of the vehicle exceeds the set temperature and the vehicle room to be cooled by the evaporator 7 is thermionic, the compressor 1 is driven and the first expansion mechanism 3 is driven by refrigerant The second expansion mechanism 6 is adjusted to an opening degree for expanding the refrigerant, and the bypass valve 83 can be closed.

When the temperature of the battery module M exceeds the set temperature and cooling of the vehicle compartment is required, the controller 90 drives the compressor 1 to cool the battery module M of the battery module M and cool the vehicle .

In the simultaneous cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the gaseous refrigerant. The gaseous refrigerant (a) discharged from the compressor (1) flows to the condenser (2) and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant b can be discharged, and the subcooled liquid refrigerant b discharged from the condenser 2 can be flowed into the first expansion mechanism 3.

The first expansion mechanism 3 can be expanded in the battery module heat exchanger 4 so that the two phase refrigerant can be discharged from the first expansion mechanism 3, It can be expanded to a certain pressure. The refrigerant g expanded by the first expansion mechanism 3 can pass through the battery module heat exchanger 4 and the two phase refrigerant h can flow out from the battery module heat exchanger 4. [ The two-phase refrigerant h discharged from the battery module heat exchanger 4 can pass through the first flow path 52 of the supercooling heat exchanger 5 and flow through the first flow path 52 of the supercooling heat exchanger 5 (H- > i) while depriving heat of the refrigerant passing through the second flow path 55 of the supercooling heat exchanger 5 while passing through the first flow path 52 of the supercooling heat exchanger 5, The refrigerant i can be discharged.

The subcooled refrigerant i discharged from the first flow path 52 of the supercooling heat exchanger 5 can be expanded into the two-phase refrigerant j while passing through the second expansion mechanism 6. [ The two-phase refrigerant j expanded by the second expansion mechanism 6 flows through the first flow path 52 of the supercooling heat exchanger 5 while passing through the second flow path 55 of the supercooling heat exchanger 5 The two-phase refrigerant k can be discharged from the second flow path 55 of the supercooling heat exchanger 5. In this case,

Phase refrigerant k discharged from the second flow path 55 of the supercooling heat exchanger 5 can be flowed to the evaporator 7 and evaporated while passing through the evaporator 7 to be superheated have. In the evaporator 7, the superheated gaseous refrigerant m can be discharged, and the gaseous refrigerant m can be sucked into the compressor 1 and compressed.

The present embodiment can prevent the refrigerant from being overheated while passing through the battery module heat exchanger 4 so that the heat exchange module heat exchanger 4 can cool the battery module M at a higher temperature than the evaporator 7, The inside of the pack P can be kept below the dew point temperature of the humidifier.

That is, the condensed water on the surface of the battery module M can be minimized while the battery module heat exchanger 4 cools the battery module M, and the reliability of the battery module M can be improved.

FIG. 7 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the second embodiment of the present invention is in a cooling mode, and FIG. 8 is a flowchart showing a flow of a refrigerating cycle cycle when the refrigerating cycle apparatus for a vehicle according to the second embodiment of the present invention is in a battery module cooling mode FIG. 9 is a view showing the flow of the refrigerant when the refrigerating cycle apparatus for a vehicle according to the second embodiment of the present invention is in the simultaneous cooling mode, and FIG. 10 is a view showing the flow of the refrigerant in the second embodiment of the present invention Fig. 11 is a ph diagram when the refrigerating cycle apparatus for a vehicle according to the second embodiment of the present invention is in the simultaneous cooling mode. Fig.

This embodiment includes a compressor 1, a condenser 2, a first expansion mechanism 3 and a battery module heat exchanger 4, and the battery module heat exchanger 4 A gas-liquid separator 5 'for separating the refrigerant passed through the gas-phase refrigerant and liquid refrigerant and a second expansion mechanism 6' for expanding the liquid refrigerant discharged from the gas-liquid separator 5 '.

The present embodiment can have the same or similar structures and actions as those of the first embodiment of the present invention except for the gas-liquid separator 5 'and the second expansion mechanism 6'. Hereinafter, And the detailed description thereof will be omitted.

The gas-liquid separator 5 'may be connected to the battery module heat exchanger outlet flow path 43. The gas-liquid separator 5 'may include a gas-liquid separator 56 into which refrigerant having passed through the battery module heat exchanger outlet flow path 43 flows.

One end of the battery module heat exchanger outlet flow path 43 may be connected to the battery module heat exchanger 4 and the other end may be connected to the gas-liquid separator 56.

The battery module heat exchanger outlet flow path 43 may be connected to the upper portion of the gas-liquid separator 56.

The gas-liquid separator 5 'may be connected to the gas-phase refrigerant outlet passage 57 through which the gaseous refrigerant is guided. The gaseous refrigerant outlet passage 57 may be connected to the compressor suction passage 11. The gas-phase refrigerant outlet passage 57 may be connected at one end to the gas-liquid separator 56 and at the other end to the compressor suction passage 11.

The gas-phase refrigerant outlet passage 57 may be connected to the upper portion of the gas-liquid separator 56.

The gaseous refrigerant outlet flow path 57 may be connected between the accumulator 15 and the evaporator 7 in the compressor suction flow path 11.

The gas-liquid separator 5 'may be connected to a liquid refrigerant outlet flow path 58 through which the liquid refrigerant flows. The liquid refrigerant outlet passage 58 may be connected to the second expansion mechanism 6 '.

One end of the liquid refrigerant outlet flow path 58 can be connected to the gas-liquid separator 56, and the other end can be connected to the second expansion mechanism 6 '. The liquid refrigerant outlet passage 58 may be connected to the lower portion of the gas-liquid separator 56.

The second expansion mechanism 6 'may be connected to the liquid refrigerant outlet flow path 58 and connected to the evaporator 1 and the evaporator connecting flow path 71.

The present embodiment may further include an on-off valve 8 provided in the gaseous refrigerant outlet flow passage 57. [ The gaseous refrigerant outlet flow passage 57 includes an opening and closing valve inlet flow passage for connecting the gas-liquid separator 5 'and the opening and closing valve 8, and an opening and closing valve outlet flow passage for connecting the opening and closing valve 8 and the compressor suction flow passage 11 can do.

The present embodiment is characterized in that the bypass flow paths 81 and 82 'connecting the condenser outlet flow passage 21 and the liquid refrigerant outlet flow passage 58 and the bypass valve 83' provided in the bypass flow paths 81 and 82 ' ).

The bypass flow paths 81 and 82 'include a first bypass flow path 81 connecting the condenser outlet flow path 21 and the bypass valve 83', a second bypass flow path 81 connected to the liquid refrigerant outlet flow path 58, And may include a path passage 82 '.

One end of the second bypass passage 82 'may be connected to the bypass valve 83'. The other end of the second bypass passage 82 'may be connected to the liquid refrigerant outlet passage 58 between the gas-liquid separator 5' and the second expansion mechanism 6 '.

10, the control unit 90 for controlling the compressor 1, the first expansion mechanism 3, the second expansion mechanism 6 ', the on-off valve 8 and the bypass valve 83 ').

The control unit 90 'controls the compressor 1 and the first expansion mechanism 90 in accordance with the desired temperature input to the desired temperature input unit 94, the temperature sensed by the temperature sensor 92, (3), the second expansion mechanism (6 '), the on-off valve (8), and the bypass valve (83).

The controller 90 'controls the compressor (not shown) so that the refrigerant does not flow into the battery module heat exchanger 4 and the refrigerant flows into the evaporator 7 when the temperature of the battery module M is lower than the set temperature, 1, the first expansion mechanism 3, the second expansion mechanism 6 ', the on-off valve 8 and the bypass valve 83'. That is, the refrigeration cycle apparatus for a vehicle can perform a cooling mode in which only the evaporator 7 is cooled solely.

The control unit 90 'controls the temperature of the battery module M so that the refrigerant flows into the battery module heat exchanger 4 and the refrigerant flows into the compressor (not shown) 1, the first expansion mechanism 3, the second expansion mechanism 6 ', the on-off valve 8 and the bypass valve 83'. That is, the refrigeration cycle apparatus for a vehicle can perform a battery module cooling mode in which only the battery module heat exchanger 4 is cooled solely.

If the vehicle room is thermally turned on and the temperature of the battery module M exceeds the set temperature, the controller 90 'firstly passes the refrigerant through the battery module heat exchanger 4 and exits the battery module heat exchanger 4 A first expansion mechanism 3, a second expansion mechanism 6 ', an on-off valve 8 and a bypass valve (not shown) so that the liquid refrigerant in the two- 83 '). That is, the refrigeration cycle apparatus for a vehicle can perform a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together.

Hereinafter, with reference to FIG. 7, the case where the refrigerating cycle apparatus for cooling the evaporator 7 is in the cooling mode will be described as follows.

The refrigeration cycle apparatus for a vehicle is operated in such a manner that the compressor 1 is driven, the first expansion mechanism 3 is closed, the second expansion mechanism 6 'is adjusted to an opening for expanding the refrigerant, , The bypass valve 82 can be controlled to be in the open cooling mode.

The cooling mode may be implemented when the vehicle is thermally turned on and the cooling of the battery module M is unnecessary.

When the temperature of the battery module M is equal to or lower than the set temperature and the vehicle room to be cooled by the evaporator 7 is thermo-on, the control unit 90 can drive the compressor 1 only for cooling the passenger compartment.

The vehicle refrigeration cycle apparatus can be operated in the cooling mode when the temperature sensed by the temperature sensor 92 is below the set temperature and the vehicle room to be cooled by the evaporator 7 is thermionic.

In the cooling mode, the compressor 1 can be driven, the first expansion mechanism 3 can be closed, the second expansion mechanism 6 'can be adjusted to the opening for expanding the refrigerant, and the opening / closing valve 8 ) May be closed, and the bypass valve 83 may be opened.

In the cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the gaseous refrigerant can be discharged from the compressor 1. The gaseous refrigerant discharged from the compressor (1) flows to the condenser (2) and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant can be discharged, and the subcooled liquid refrigerant can pass through the bypass flow paths 81 and 82 'and the bypass valve 83. The refrigerant passing through the bypass flow paths 81 and 82 'flows into the second expansion mechanism 6' and can be expanded into the two-phase refrigerant by the second expansion mechanism 6 '. The refrigerant expanded by the second expansion mechanism 6 'can flow to the evaporator 7, and the refrigerant can be discharged from the evaporator 7, and this refrigerant can be sucked into the compressor 1.

In the cooling mode as described above, the evaporator 7 can cool the passenger compartment.

Hereinafter, with reference to FIG. 8, a case where the refrigerating cycle apparatus for a vehicle is a battery module cooling mode in which the battery module heat exchanger 4 is cooled will be described.

The refrigerating cycle apparatus for a vehicle is characterized in that the compressor 1 is driven and the first expansion mechanism 3 is regulated to an opening for expanding the refrigerant, the second expansion mechanism 6 'is closed, the opening and closing valve 8 is open , And the bypass valve 82 is closed.

   The battery module cooling mode can be implemented when the vehicle is thermally turned off and the battery module M needs to be cooled.

The controller 90 can drive the compressor 1 only for the heat dissipation of the battery module M if the temperature of the battery module M exceeds the set temperature and the vehicle room to be cooled by the evaporator 7 is thermo-off.

The vehicle refrigeration cycle apparatus can be operated in the battery module cooling mode when the temperature sensed by the temperature sensor 92 exceeds the set temperature and the vehicle room to be cooled by the evaporator 7 is thermo-off.

In the battery module cooling mode, the compressor 1 can be driven, the first expansion mechanism 3 can be adjusted to an opening for expanding the refrigerant, the second expansion mechanism 6 'can be closed, (8) can be opened, and the bypass valve (83) can be closed.

In the battery module cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the gaseous refrigerant can be discharged from the compressor 1. The gaseous refrigerant discharged from the compressor (1) flows to the condenser (2) and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant can be discharged, and the subcooled liquid refrigerant can be expanded into the two-phase refrigerant by the first expansion mechanism 3. [ The two-phase refrigerant expanded by the first expansion mechanism (3) can cool the battery module (M) while passing through the battery module heat exchanger (4). The refrigerant having passed through the battery module heat exchanger 4 can be introduced into the gas-liquid separator 5 '.

The gaseous refrigerant in the refrigerant flowing into the gas-liquid separator 5 'may be sucked into the compressor 1 through the opening / closing valve 8.

In the battery module cooling mode, the battery module heat exchanger 4 can dissipate the heat of the battery module M.

Hereinafter, a case where the refrigeration cycle apparatus for a vehicle is a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled together will be described with reference to FIGS. 9 and 11 as follows.

The refrigerating cycle device for a vehicle is driven by a compressor (1), the first expansion mechanism (3) is regulated to an opening degree for expanding the refrigerant, the second expansion mechanism (6 ') is regulated to an opening degree for expanding the refrigerant, (8) is open, and the bypass valve (83) is closed.

The simultaneous cooling mode may be implemented when the vehicle is thermally turned on and cooling of the battery module M is required.

If the temperature sensed by the temperature sensor 92 exceeds the set temperature and the refrigerator to be cooled by the evaporator 7 is thermionic, the compressor 1 is driven and the first expansion mechanism 3 is opened to open the refrigerant And the second expansion mechanism 6 'is adjusted to an opening degree for expanding the refrigerant, the opening / closing valve 8 can be opened, and the bypass valve 83 can be closed.

When the temperature of the battery module M exceeds the set temperature and cooling of the vehicle compartment is required, the controller 90 drives the compressor 1 to cool the battery module M of the battery module M and cool the vehicle .

In the simultaneous cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the gaseous refrigerant. The gaseous refrigerant (a) discharged from the compressor (1) flows to the condenser (2) and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant b can be discharged, and the subcooled liquid refrigerant b discharged from the condenser 2 can flow into the first expansion mechanism 3, The first expansion mechanism 3 can expand the pressure in the battery module heat exchanger 4 to a pressure at which the two-phase refrigerant can be discharged. The refrigerant g expanded by the first expansion mechanism 3 can pass through the battery module heat exchanger 4 and the two phase refrigerant h can flow out from the battery module heat exchanger 4. [ The two-phase refrigerant h discharged from the battery module heat exchanger 4 may be introduced into the gas-liquid separator 5 '.

The refrigerant in the gas-liquid separator 5 'can be separated into the gaseous refrigerant h-> m and the liquid refrigerant h- > i, the gaseous refrigerant can flow toward the opening / closing valve 8, May flow toward the second expansion mechanism 6 '.

The second expansion mechanism 6 'can cause the liquid refrigerant to undergo secondary expansion (i-> j) with the two-phase refrigerant. The two-phase refrigerant j evaporates while passing through the evaporator 7, > k), and can flow into the compressor suction passage 11.

On the other hand, the gaseous refrigerant m flowing from the gas-liquid separator 5 'to the opening / closing valve 8 can flow through the opening / closing valve 8 to the compressor suction flow passage 11, It can be mixed with the gaseous refrigerant.

In the simultaneous cooling mode of this embodiment, the suction pressure of the compressor 1 can be raised (k- > n) by the mixing of the refrigerant as described above, the compression work of the compressor 1 can be reduced, Can be improved.

The present embodiment is characterized in that the refrigerant is not overheated while passing through the battery module heat exchanger 4 and the heat exchange module heat exchanger 4 can cool the battery module M at a higher temperature than the evaporator 7, The inside of the pack P can be kept below the dew point temperature of the humidifier.

FIG. 12 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the third embodiment of the present invention is in a cooling mode, and FIG. 13 is a flowchart showing a flow of the refrigerating cycle when the refrigerating cycle apparatus for a vehicle according to the third embodiment of the present invention is in a battery module cooling mode FIG. 14 is a view showing a flow of refrigerant when the refrigerating cycle apparatus for a vehicle according to the third embodiment of the present invention is in the simultaneous cooling mode, FIG. 15 is a view showing the flow of the refrigerant in the ejector 16 is a control block diagram of a refrigerating cycle apparatus for a vehicle according to a third embodiment of the present invention. FIG. 17 is a block diagram of a refrigerating cycle apparatus for a vehicle according to a third embodiment of the present invention, Of Ph.

This embodiment is different from the second embodiment in that the compressor 1, the condenser 2, the first expansion mechanism 3 and the battery module heat exchanger 4, the gas-liquid separator 5 ' And an opening and closing valve 8 and may further include an evaporator 7 ', a flow path switching valve 9 and an ejector 10.

The present embodiment can have the same or similar structures and actions as those of the first embodiment of the present invention except for the evaporator 7 ', the flow path switching valve 9 and the ejector 10. Hereinafter, The same reference numerals are used for the same components, and a detailed description thereof will be omitted.

The evaporator 7 'may be connected to the second expansion mechanism 6' and the evaporator connecting passage 71. An evaporator outlet flow path 72 may be connected to the evaporator 7 '. The evaporator outlet flow path 72 can guide the refrigerant that has passed through the evaporator 7 'to the flow path switching valve 9.

The flow path switching valve 9 can be connected to the evaporator outlet flow path 72.

The flow path switching valve 9 can be connected to the compressor suction path 11 and the suction path connecting path 92 so that the refrigerant flowing into the evaporator outlet path 72 is guided to the suction path connecting path 92, (11). ≪ / RTI >

An ejector suction path 93 can be connected to the flow path switching valve 9 so that the refrigerant flowing into the evaporator outlet flow path 72 can be guided to the ejector suction path 93 and flow to the ejector 10.

The flow path switching valve 9 can switch the flow path so that the refrigerant discharged from the evaporator 7 'is sucked into the ejector 10 or sucked into the compressor 1. [

The flow path switching valve 9 can guide the refrigerant flowing from the evaporator 7 'to the evaporator outlet flow path 72 to the suction flow path connecting path 92 in the compressor flow mode.

The flow path switching valve 9 can guide the refrigerant flowing from the evaporator 7 'to the evaporator outlet flow path 72 to the ejector suction flow path 93 in the ejector flow mode. The flow path switching valve 9 can be constituted by a three-way valve. The flow path switching valve 9 may include an inlet end connected to the evaporator outlet flow path 72, a first outlet end connected to the suction flow path connecting path 92, and a second outlet end connected to the ejector suction path 93.

On the other hand, the flow path switching valve 9 is not limited to the above-described three-way valve but may be a combination of a plurality of flow path switching valves. The flow path switching valve 9 is provided in the suction flow path connecting passage 92 and has a first flow path switching valve for opening and closing the suction path connecting flow path 92 and a second flow path switching valve provided in the ejector suction path 93, It is of course possible to include a second flow path switching valve that opens and closes the second flow path switching valve.

In this case, the suction passage connecting passage 92 and the ejector suction passage 93 may be connected to the evaporator outlet passage 72 in two branches.

The ejector 10 may be disposed between the first expansion mechanism 3 and the battery module heat exchanger 4 in the refrigerant flow direction.

The ejector 10 may be connected to the first expansion mechanism 3 and the ejector inlet flow path 101. The ejector 10 can be connected to the ejector suction path 93. The ejector 10 may be connected to the battery module heat exchanger inlet flow path 41.

The ejector 10 may include a suction portion 103 connected to the ejector inlet flow passage 101 and the ejector suction flow passage 93 and having a nozzle 102 therein.

The ejector 10 may include a diffuser 104 connected to the battery module heat exchanger inlet flow path 41.

The ejector 10 may include a mixing portion 105 between the suction portion 103 and the diffuser 104.

The suction unit 103 may include a suction body 103A having a nozzle 102 therein.

The suction portion 103 includes a first inlet portion 103B to which the ejector inlet flow path 101 is connected and which guides the refrigerant expanded by the first expansion mechanism 3 to the nozzle 102, And a second inlet portion 103C connected to the ejector suction passage 93 and guiding the refrigerant in the ejector suction passage 93 to the periphery of the nozzle 102. [

The nozzle 102 is a portion for decompressing and expanding the refrigerant expanded by the first expansion mechanism 3 and includes an axial tube portion whose diameter gradually decreases in the moving direction of the refrigerant and a tube portion extending from the axial tube portion, . ≪ / RTI >

The refrigerant that has been primarily expanded by the first expansion mechanism 3 can be accelerated while passing through the nozzle 102 to increase the flow velocity and form a negative pressure in the mixing portion 105 as the pressure is lowered by the increased flow rate can do.

The pressure of the suction part 103 may be lower than the pressure of the evaporator 7 and the refrigerant of the ejector suction path 93 may be sucked into the suction part 103 through the second inlet part 103C.

The mixing portion 105 is a portion where the refrigerant that has passed through the nozzle 102 and the refrigerant that is sucked through the ejector suction path 93 are mixed.

The mixing section 105 may have a constant internal cross-sectional area in the refrigerant flow direction. The inner cross-sectional area of the mixing portion 105 may be smaller than the inner cross-sectional area of the suction portion 102.

The diffuser 104 may be formed to gradually expand in the flow direction of the refrigerant.

Meanwhile, The present embodiment may further include bypass passages 81 and 82 'and bypass valves 83' provided in the bypass passages 81 and 82 ', as in the second embodiment of the present invention .

The bypass flow paths 81 and 82 'may include a first bypass flow path 81 and a second bypass flow path 82' as in the second embodiment of the present invention. Since the second embodiment is the same as the second embodiment, detailed description thereof will be omitted.

16, the refrigerating cycle apparatus for a vehicle includes a compressor 1, a first expansion mechanism 3, a second expansion mechanism 6 ', an opening / closing valve 8, a flow path switching valve 9, And a control unit 90 "for controlling the valve 83 '.

 The control unit 90 "controls the compressor 1 and the first expansion mechanism 90 in accordance with the desired temperature input to the desired temperature input unit 94, the temperature sensed by the temperature sensor 92, Off valve 8 and the flow path switching valve 9 and the bypass valve 83 'can be controlled by the first expansion mechanism 3, the second expansion mechanism 6', and the like.

The control unit 90 "controls the temperature of the battery module M so that the refrigerant does not flow into the battery module heat exchanger 4 and the refrigerant flows into the evaporator 7 ' It is possible to control the first expansion mechanism 1, the first expansion mechanism 3, the second expansion mechanism 6 ', the opening / closing valve 8, the flow path switching valve 9 and the bypass valve 83'. That is, the refrigeration cycle apparatus for a vehicle can perform a cooling mode in which only the evaporator 7 'alone is cooled.

The controller 90 "controls the temperature of the battery module M so that the refrigerant flows into the battery module heat exchanger 4 and the refrigerant flows into the evaporator 7 ' It is possible to control the first expansion mechanism 1, the first expansion mechanism 3, the second expansion mechanism 6 ', the opening / closing valve 8, the flow path switching valve 9 and the bypass valve 83'. That is, the refrigeration cycle apparatus for a vehicle can perform a battery module cooling mode in which only the battery module heat exchanger 4 is cooled solely.

When the temperature of the battery module M exceeds the set temperature, the control unit 90 "firstly passes through the battery module heat exchanger 4 and exits the battery module heat exchanger 4 A first expansion device 3, a second expansion device 6 ', an on-off valve 8, and a flow path switching device 7, so that the liquid refrigerant in the two-phase refrigerant is flowed to the evaporator 7' The refrigeration cycle apparatus for a vehicle can control the simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 'are cooled together have.

Hereinafter, with reference to FIG. 12, a case where the refrigerating cycle apparatus for a vehicle cools the evaporator 7 in a cooling mode will be described.

The refrigerating cycle apparatus for a vehicle is operated in such a manner that the compressor 1 is driven, the first expansion mechanism 3 is closed, the second expansion mechanism 6 'is adjusted to an opening for expanding the refrigerant, the opening / closing valve 8 is closed , The flow path switching valve 9 is in the compressor flow mode, and the bypass valve 83 'is open.

The refrigerating cycle apparatus for a vehicle is arranged such that the compressor 1 is driven and the first expansion mechanism 3 is driven when the temperature sensed by the temperature sensor 92 is lower than the set temperature and the vehicle room to be cooled by the evaporator 7 ' Closing valve 8 is closed, the flow path switching valve 9 is in the compressor flow mode, and the bypass valve 83 'is closed, and the second expansion mechanism 6' is adjusted to the opening degree for expanding the refrigerant, It can be open.

In the cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the gaseous refrigerant can be discharged from the compressor 1. As shown in Fig. 12, the gaseous refrigerant discharged from the compressor 1 flows into the condenser 2 and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant can be discharged, and the subcooled liquid refrigerant can pass through the bypass flow paths 81 and 82 'and the bypass valve 83. The refrigerant passing through the bypass flow paths 81 and 82 'flows into the second expansion mechanism 6' and can be expanded into the two-phase refrigerant by the second expansion mechanism 6 '. The refrigerant expanded by the second expansion mechanism 6 'can be flowed to the evaporator 7 and the refrigerant can be discharged from the evaporator 7, (11), and can be sucked into the compressor (1) through the compressor suction passage (11).

In the cooling mode as described above, the evaporator 7 can cool the passenger compartment.

Hereinafter, with reference to FIG. 13, a description will be made of a case where the refrigerating cycle apparatus for cooling the battery module heat exchanger 4 is a cooling mode.

The refrigeration cycle apparatus for a vehicle is operated in such a manner that the compressor 1 is driven, the first expansion mechanism 3 is adjusted to an opening for expanding the refrigerant, the second expansion mechanism 6 'is closed, the opening / closing valve 8 is opened , And the bypass valve 83 'is closed.

The refrigerating cycle apparatus for a vehicle is such that the compressor 1 is driven and the first expansion mechanism 3 is driven when the temperature sensed by the temperature sensor 92 exceeds the set temperature and the vehicle room to be cooled by the evaporator 7 ' The second expansion mechanism 6 'is closed, the opening / closing valve 8 is opened, and the bypass valve 83' is closed.

In the battery module cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the gaseous refrigerant can be discharged from the compressor 1. As shown in Fig. 13, the gaseous refrigerant discharged from the compressor 1 flows into the condenser 2 and can be condensed and subcooled. In the condenser 2, the subcooled liquid refrigerant can be discharged, and the subcooled liquid refrigerant can be expanded into the two-phase refrigerant by the first expansion mechanism 3. [ The two-phase refrigerant expanded by the first expansion mechanism (3) can cool the battery module (M) while passing through the battery module heat exchanger (4). The refrigerant having passed through the battery module heat exchanger 4 can be introduced into the gas-liquid separator 5 '.

The gaseous refrigerant in the refrigerant flowing into the gas-liquid separator 5 'may be sucked into the compressor 1 through the opening / closing valve 8.

In the battery module cooling mode, the battery module heat exchanger 4 can dissipate the heat of the battery module M.

Hereinafter, with reference to FIG. 14, FIG. 15 and FIG. 17, a description will be given of a case where the refrigeration cycle apparatus for a vehicle is a simultaneous cooling mode in which the battery module heat exchanger 4 and the evaporator 7 are cooled.

The refrigerating cycle device for a vehicle is driven by the compressor 1 and the first expansion mechanism 3 and the second expansion mechanism 6 'are each controlled by the opening degree for expanding the refrigerant. The opening and closing valve 8 is opened, The switching valve 9 is in the ejector flow mode, and the bypass valve 83 'is closed.

The refrigerating cycle apparatus for a vehicle is characterized in that when the temperature sensed by the temperature sensor 92 is equal to or higher than the set temperature and the vehicle room to be cooled by the evaporator 7 'is thermionic, the compressor 1 is driven and the first expansion mechanism 3 Closing valve 8 is opened, the flow path switching valve 9 is in the ejector flow mode, the bypass valve 83 'is closed, and the second expansion mechanism 6' is controlled by the opening degree for expanding the refrigerant. .

In the simultaneous cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the gaseous refrigerant. As shown in Fig. 14, the gaseous refrigerant a discharged from the compressor 1 flows into the condenser 2 and can be condensed and subcooled. The subcooled refrigerant b discharged from the condenser 2 flows into the first expansion mechanism 3 and flows into the first expansion mechanism 3 from the first expansion mechanism 3, The car can be inflated.

The refrigerant expanded by the first expansion mechanism (3) can be flowed to the mixing section (105) after being decompressed and expanded through the nozzle (102) of the ejector (10). The refrigerant g decompressed and expanded by the nozzle 102 can be mixed with the refrigerant o drawn into the mixing portion 105 of the ejector 10 through the second inlet portion 103C and mixed with the refrigerant g h) can be stepped up (h- > i) and flow into the battery heat exchanger 4.

The refrigerant i flowing into the battery heat exchanger 4 can pass through the battery module heat exchanger 4 and the two phase refrigerant j can flow out from the battery module heat exchanger 4. [ The two-phase refrigerant j discharged from the battery module heat exchanger 4 may be introduced into the gas-liquid separator 5 '.

The refrigerant in the gas-liquid separator 5 'can be separated into the gaseous refrigerant j-> p and the liquid refrigerant j- > k, and the gaseous refrigerant p can flow toward the opening / closing valve 8 , The liquid refrigerant (k) can flow toward the second expansion mechanism (6 ').

The second expansion mechanism 6 'can cause the liquid refrigerant to be secondarily expanded (k-> m) by the two-phase refrigerant. The two-phase refrigerant m is evaporated while passing through the evaporator 7, > n). The refrigerant n discharged from the evaporator 7 can be guided to the ejector suction path 93 by the flow path switching valve 9. The refrigerant in the ejector suction passage 93 can be sucked into the mixing portion 105 of the ejector 10 through the suction portion 103 of the ejector 10 and the refrigerant passing through the nozzle 102 of the ejector 10 ≪ / RTI >

On the other hand, the gaseous refrigerant p flowing from the gas-liquid separator 5 'to the opening / closing valve 8 flows into the compressor suction passage 11 through the opening / closing valve 8 and can be sucked into the compressor 1.

The present embodiment does not overheat while the refrigerant passes through the battery module heat exchanger 4 and the heat exchange module heat exchanger 4 can cool the battery module M at a higher temperature than the evaporator 7 ' The inside of the pack P can be kept below the dew point temperature of the humidifier.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: compressor 2: condenser
3: first expansion mechanism 4: battery module heat exchanger
5: supercooling heat exchanger 6: second expansion mechanism
7: Evaporator

Claims (28)

A compressor connected to the compressor suction passage and the compressor discharge passage;
A condenser connected to the compressor discharge passage and connected to a condenser outlet passage;
A first expansion mechanism connected to the condenser outlet passage;
A battery module heat exchanger connected to the first expansion mechanism and an inlet flow path of the battery module heat exchanger and having a cooling flow path for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger;
An evaporator connected to the compressor suction passage;
A first flow path connected to the battery module heat exchanger outlet flow path, a connection flow path through which the refrigerant having passed through the first flow path is guided, and a refrigerant flowing through the connection flow path, A supercooling heat exchanger having a second flow path connected to the evaporator and the evaporator;
And a second expansion mechanism provided in the connection passage. The method according to claim 1,
A bypass flow path connecting the condenser outlet flow path and the connection flow path;
And a bypass valve provided in the bypass passage. 3. The method of claim 2,
And the bypass flow path is connected between the second expansion mechanism and the first flow path. The method of claim 3,
And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, and the bypass valve. 5. The method of claim 4,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is controlled to an opening degree for expanding the refrigerant, and the bypass valve is controlled to be an open cooling mode. 5. The method of claim 4,
And a temperature sensor for sensing the temperature of the battery module,
If the temperature sensed by the temperature sensor is below the set temperature and the cabin to be cooled by the evaporator is thermon,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, and the bypass valve is open. 5. The method of claim 4,
Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, the second expansion mechanism is controlled to an opening degree for expanding the refrigerant, and the bypass valve is controlled to a simultaneous cooling mode in which the bypass valve is closed Refrigeration cycle equipment. 5. The method of claim 4,
And a temperature sensor for sensing the temperature of the battery module,
When the temperature sensed by the temperature sensor in the traveling mode of the vehicle exceeds the set temperature and the vehicle room to be cooled by the evaporator is thermionic,
The compressor is driven,
The first expansion mechanism is regulated to an opening degree for expanding the refrigerant,
The second expansion mechanism is adjusted to an opening degree for expanding the refrigerant,
And the bypass valve is closed. A compressor connected to the compressor suction passage and the compressor discharge passage;
A condenser connected to the compressor discharge passage and connected to a condenser outlet passage;
A first expansion mechanism connected to the condenser outlet passage;
A battery module heat exchanger connected to the first expansion mechanism and an inlet flow path of the battery module heat exchanger and having a cooling flow path for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger;
An evaporator connected to the compressor suction passage;
A gas-liquid separator connected to the outlet port of the battery module heat exchanger, the gas-liquid separator being connected to the compressor suction port and the gaseous coolant outlet flow path and connected to a liquid refrigerant outlet flow path through which the liquid refrigerant flows;
And a second expansion mechanism connected to the liquid refrigerant outlet flow path and connected to the evaporator and the evaporator connection flow path. 10. The method of claim 9,
And an opening / closing valve provided in the gaseous refrigerant outlet flow path. 11. The method of claim 10,
A bypass flow path connecting the condenser outlet flow path and the liquid refrigerant outlet flow path,
And a bypass valve provided in the bypass passage. 12. The method of claim 11,
And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, the opening / closing valve, and the bypass valve. 13. The method of claim 12,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the bypass valve is closed, and the bypass valve is controlled to be in an open cooling mode Cycle device. 13. The method of claim 12,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature sensed by the temperature sensor is below the set temperature and the vehicle room to be cooled by the evaporator is thermionic,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the open / close valve is closed, and the bypass valve is open. 13. The method of claim 12,
Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on / off valve is open, and the bypass valve is closed in a battery module cooling mode Refrigeration cycle apparatus for vehicles. 13. The method of claim 12,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature sensed by the temperature sensor is above the set temperature and the cabin to be cooled by the evaporator is thermo-
Wherein the compressor is driven, the first expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the open / close valve is open, and the bypass valve is closed. 13. The method of claim 12,
Wherein the compressor is driven and each of the first expansion mechanism and the second expansion mechanism is controlled by an opening degree by which the refrigerant expands and the bypass valve is closed and the bypass valve is closed, Device. 13. The method of claim 12,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature sensed by the temperature sensor is above the set temperature and the vehicle room to be cooled by the evaporator is thermionic,
Wherein the first expansion mechanism and the second expansion mechanism are each controlled by an opening for expanding the refrigerant, the open / close valve is open, and the bypass valve is closed. A compressor connected to the compressor suction passage and the compressor discharge passage;
A condenser connected to the compressor discharge passage and connected to a condenser outlet passage;
A first expansion mechanism connected to the condenser outlet passage;
A battery module heat exchanger connected to an inlet channel of the battery module heat exchanger and formed with a cooling channel for cooling a plurality of battery modules and connected to the outlet port of the battery module heat exchanger;
A gas-liquid separator connected to the outlet port of the battery module heat exchanger and having a gaseous refrigerant outlet flow path through which a gaseous refrigerant is guided is connected to a compressor suction flow path and a liquid refrigerant outlet flow path 58 through which liquid refrigerant flows;
A second expansion mechanism connected to the liquid refrigerant outlet flow path;
An evaporator connected to the second expansion mechanism and the evaporator connecting flow path and connected to the evaporator outlet flow path;
An open / close valve provided in the gaseous refrigerant outlet passage;
A flow path switching valve connected to the evaporator outlet flow path and connected to the compressor suction flow path and the suction flow path connection path and connected to the ejector suction flow path;
And an ejector connected to the first expansion mechanism and the ejector inlet flow path and connected to the ejector suction flow path and the inlet port of the battery module heat exchanger. 20. The method of claim 19,
A suction unit connected to the ejector inlet passage and the ejector suction passage and having a nozzle therein;
A diffuser connected to the inlet port of the battery module heat exchanger;
And a mixing portion between the suction portion and the diffuser. 20. The method of claim 19,
A bypass flow path connecting the condenser outlet flow path and the liquid refrigerant outlet flow path;
And a bypass valve provided in the bypass passage. 22. The method of claim 21,
And a control unit for controlling the compressor, the first expansion mechanism, the second expansion mechanism, the opening / closing valve, the flow path switching valve, and the bypass valve. 23. The method of claim 22,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the open / close valve is closed, the flow path switching valve is in a compressor flow mode, Wherein the valve is controlled in an open cooling mode. 23. The method of claim 22,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature sensed by the temperature sensor is below the set temperature and the vehicle room to be cooled by the evaporator is thermionic,
Wherein the compressor is driven, the first expansion mechanism is closed, the second expansion mechanism is adjusted to an opening for expanding the refrigerant, the open / close valve is closed, the flow path switching valve is in a compressor flow mode, A refrigeration cycle apparatus for a vehicle having an open valve. 23. The method of claim 22,
Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on / off valve is opened, and the bypass valve is closed The refrigerating cycle device for a vehicle. 23. The method of claim 22,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature sensed by the temperature sensor is above the set temperature and the cabin to be cooled by the evaporator is thermo-
Wherein the compressor is driven, the first expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the second expansion mechanism is closed, the on-off valve is opened, and the bypass valve is closed. 23. The method of claim 22,
Wherein the compressor is driven, each of the first expansion mechanism and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the open / close valve is opened, the flow path switching valve is an ejector flow mode, In cooling mode. 23. The method of claim 22,
Further comprising a temperature sensor for sensing a temperature of the battery module,
If the temperature detected by the temperature sensor is equal to or higher than the set temperature and the vehicle room to be cooled by the evaporator is thermionic,
Wherein the compressor is driven, each of the first expansion mechanism and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant, the open / close valve is opened, the flow path switching valve is an ejector flow mode, A refrigeration cycle device for a vehicle.

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