KR20170127341A - 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 to compress a refrigerant; a condenser connected to the compressor discharge flow path to condense the refrigerant and to be connected to a condenser exit flow path; a battery module heat exchanger with a cooling flow path to cool a plurality of battery modules; an overcooling heat exchanger connected to the condenser exit flow path, having a first flow path through which the refrigerant flowing in the condenser passes and a second flow path wherein the refrigerant, which has passed through the cooling flow path, cools the refrigerant of the first flow path, being connected to the compressor intake flow path; a first expansion unit which expands the refrigerant in between the first flow path and the cooling flow path; a second expansion unit connected to the condenser exit flow path and expanding the refrigerant having flowed in the condenser; and an evaporator connected to the compressor intake flow path to evaporate the refrigerant expanded by the second expansion unit. The present invention is able to evenly cool a plurality of battery modules and to minimize temperature differences between the plurality of battery modules, thereby minimizing a decrease in performance of the battery module by temperature differences between the plurality of 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.

 The refrigerant-type battery cooling apparatus includes a compressor for compressing a refrigerant, a condenser for condensing the refrigerant compressed in the compressor, an expansion valve for expanding the refrigerant condensed in the condenser, a refrigerant expanded by the expansion valve, Battery module heat exchanger.

When the compressor is driven, the refrigerant compressed in the compressor can be sucked into the compressor after sequentially passing through the condenser, the expansion valve, and the battery heat exchanger, and the refrigerant can absorb the heat of the battery module while passing through the battery heat exchanger.

KR 10-1263245 B1 (announced on May 10, 2013)

It is an object of the present invention to provide a refrigeration cycle apparatus for a vehicle in which a plurality of battery modules are uniformly cooled to minimize a temperature deviation of a plurality of battery modules.

A refrigerating 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 and compressing a refrigerant; A condenser connected to the compressor discharge passage for condensing the refrigerant and connected to the condenser outlet passage; A battery module heat exchanger having a cooling flow path for cooling a plurality of battery modules; A first flow path connected to the condenser outlet flow path and through which the refrigerant flowing in the condenser flows, and a second flow path formed by cooling the refrigerant in the first flow path and connected to the compressor suction flow path, A heat exchanger; A first expansion mechanism for expanding the refrigerant between the first flow path and the cooling flow path; A second expansion mechanism connected to the condenser outlet passage for expanding the refrigerant flowing in the condenser; And an evaporator in which the refrigerant expanded by the second expansion mechanism is evaporated and connected to the compressor suction passage.

Wherein the compressor suction passage comprises: a first suction passage connected to the compressor; A second suction passage connecting the first suction passage and the second passage; And a third suction passage connecting the first suction passage and the evaporator.

The condenser outlet flow path includes a first outlet flow path connected to the condenser; A second outlet passage connecting the first outlet passage and the first passage; And a third outlet passage connecting the first outlet passage and the second expansion mechanism.

The first flow path may be connected to the first expansion mechanism and the first expansion mechanism suction path.

The second flow path may be connected to the cooling flow path and the outlet port of the battery module heat exchanger.

And a control unit for controlling the compressor, the first expansion mechanism, and the second expansion mechanism. The compressor may be driven, the first expansion mechanism may be closed, and the second expansion mechanism may be an opening The cooling mode can be controlled.

The first expansion mechanism may be closed 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, , And the second expansion mechanism can be adjusted to an opening degree for expanding the refrigerant.

The compressor may be driven, the first expansion mechanism may be controlled to an opening degree for expanding the refrigerant, and the second expansion mechanism may be controlled to be closed battery module cooling mode.

If the battery module is a quick charge, the compressor can be driven, the first expansion mechanism can be adjusted to an opening for expanding the refrigerant, and the second expansion mechanism can be closed.

The compressor may be driven, the first expansion mechanism may be controlled to an opening degree for expanding the refrigerant, and the second expansion mechanism may be controlled to a simultaneous cooling mode in which the expansion mechanism is adjusted to an opening for expanding the refrigerant.

The first expansion mechanism can be adjusted to an opening degree for expanding the refrigerant, and the second expansion mechanism is capable of expanding the refrigerant when the vehicle room to be cooled by the evaporator in the running mode of the vehicle is thermo-on, To the opening.

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, and the second expansion mechanism can be adjusted to an opening degree for expanding the refrigerant.

According to the embodiment of the present invention, there is an advantage in that the temperature deviation of the plurality of battery modules can be minimized and the performance degradation of the battery module due to the temperature deviation of the plurality of battery modules can be minimized.

In addition, the two-phase refrigerant discharged from the battery module heat exchanger is superheated by the supercooling heat exchanger and then sucked into the compressor, thereby minimizing the performance deterioration of the compressor caused when the two-phase refrigerant is sucked into the compressor.

Further, there is an advantage that a plurality of battery modules can be efficiently cooled while cooling the battery module heat exchanger and the evaporator with a simple structure further including a supercooling heat exchanger.

In addition, when the plurality of battery modules are quick-charged, there is an advantage that a plurality of battery modules can be cooled quickly.

1 is a view showing a refrigeration cycle apparatus for a vehicle according to the present embodiment,
2 is a ph diagram of a refrigeration cycle apparatus for a vehicle according to the present embodiment,
3 is a view showing a refrigeration cycle apparatus for a vehicle, which is a comparative example,
Fig. 4 is a ph diagram of a refrigeration cycle apparatus for a vehicle,
5 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the present embodiment is in the simultaneous cooling mode,
6 is a view showing a refrigerant flow when the refrigeration cycle apparatus for a vehicle according to the present embodiment is in an evaporator cooling mode,
7 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the present embodiment is in a battery module cooling mode,
8 is a control block diagram of the refrigeration cycle apparatus for a vehicle according to the present embodiment.

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

FIG. 1 is a diagram showing a refrigerating cycle apparatus for a vehicle according to the present embodiment, FIG. 2 is a ph diagram of a refrigerating cycle apparatus for a vehicle according to the present embodiment, FIG. 3 is a view showing a refrigerating cycle apparatus for a vehicle, 4 is a ph diagram of a refrigeration cycle apparatus for a vehicle, which is a comparative example.

The present embodiment has a compressor 1, a condenser 2, a supercooling heat exchanger 3, a first expansion mechanism 4, a battery module 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 flow path (11) includes a first suction flow path (13) connected to the compressor (1); A second suction passage 14 connecting the first suction passage 13 and the second passage 32, which will be described later, of the supercooling heat exchanger 3; And a third suction passage (15) connecting the first suction passage (13) and the evaporator (7).

The refrigerant having passed through the second flow path 32 of the supercooling heat exchanger 3 can be sucked into the compressor 1 after passing through the second suction path 14 and the first suction path 13 in sequence.

The refrigerant having passed through the evaporator 7 can be sucked into the compressor 1 after sequentially passing through the third suction passage 15 and the first suction passage 13.

The condenser (2) is connected to the compressor discharge passage (12) to condense the refrigerant. The vehicle may further include an outdoor fan (28) for blowing air toward the condenser (2).

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 condenser outlet flow passage (21) has a first outlet flow passage (22) connected to the condenser (2); A second outlet passage 23 connecting the first outlet passage 22 and the first passage 31 described later of the supercooling heat exchanger 3; And a third outlet passage 24 connecting the first outlet passage 22 and the second expansion mechanism 6. [

The refrigerant flowing out of the condenser 2 can be sequentially passed through the first outlet passage 22 and the second outlet passage 23 and then flowed to the first passage 31 of the supercooling heat exchanger 3. [ The refrigerant flowing out of the condenser 2 may flow through the first outlet passage 22 and the third outlet passage 24 in sequence and then flow into the second expansion mechanism 6. [

The refrigerant condensed in the condenser 2 is subcooled in the supercooling heat exchanger 3 and then expanded by the first expansion mechanism 4 and can be flowed to the battery module heat exchanger 5. [

The refrigerant condensed in the condenser 2 can be expanded by the second expansion mechanism 6 and can flow to the evaporator 7.

The refrigerant condensed in the condenser 2 can be dispersed in the supercooling heat exchanger 3 and the second expansion mechanism 6. Some of the refrigerant condensed in the condenser 2 can be flowed to the battery module heat exchanger 5 after sequentially passing through the first flow path 31 of the supercooling heat exchanger 3 and the first expansion mechanism 4. [ have. Then, the remainder of the refrigerant condensed in the condenser (2) may flow to the evaporator (7) after passing through the second expansion mechanism (6).

The supercooling heat exchanger 3 is connected to a refrigerant flowing in the condenser 2 and then flowing toward the first expansion device 4 and a refrigerant flowing through the battery module heat exchanger 5 and flowing toward the compressor 1 Heat exchange can be performed.

The supercooling heat exchanger (3) may be connected to the condenser outlet flow passage (21). The supercooling heat exchanger 3 is provided with a first flow path 31 through which the refrigerant flowing in the condenser 2 passes and a refrigerant passing through the cooling flow path 51 of the battery module heat exchanger 5, A second flow path 32 for cooling the refrigerant of the first heat exchanger 32 may be formed. The supercool heat exchanger (3) may be connected to a compressor suction passage (11).

The first flow path 31 may be connected to the condenser outlet flow path 21 and may be connected to the second outlet flow path 23 of the condenser outlet flow path 21. The first flow path 31 may be connected to the first expansion mechanism suction path 41 described later. One end of the first flow path 31 may be connected to the condenser outlet flow path 21 and the other end may be connected to the first expansion mechanism suction flow path 41.

The refrigerant flowing out of the condenser 2 can pass through the first flow path 31 after passing sequentially through the first outlet flow path 22 and the second outlet flow path 23 and passing through the first flow path 31 A refrigerant may flow through the first expansion mechanism suction passage 41 and into the first expansion mechanism 4. [

The second flow path 32 may be connected to a battery module heat exchanger outlet flow path 52 to be described later. The second flow path 32 may be connected to the compressor suction flow path 11. The second flow path 32 may be connected to the second suction flow path 14 of the compressor suction flow path 11. One end of the second flow path 32 may be connected to the battery module heat exchanger outlet flow path 52 and the other end may be connected to the compressor suction flow path 11.

The refrigerant flowing out of the battery module heat exchanger 5 can sequentially pass through the battery module heat exchanger outlet flow path 52 and the second flow path 32. The refrigerant passing through the second flow path 32 flows through the second suction The refrigerant can be sucked into the compressor 1 after passing through the flow path 14 and the first suction flow path 13 sequentially.

The first expansion mechanism (4) can expand the refrigerant between the first flow path (31) and the cooling flow path (51).

The first expansion mechanism (4) may be connected to the first flow path (31) and the first expansion mechanism suction path (41). The first expansion mechanism 4 may be connected to the cooling flow path 51 of the evaporator 5 and the first expansion mechanism outlet flow path 42.

The first expansion mechanism (4) can be constituted by an expansion valve such as EEV or LEV which can adjust its opening degree and shut off the flow of the refrigerant at full close.

The refrigerant that has passed through the first flow path 31 can flow through the first expansion mechanism suction path 41 to the first expansion mechanism 4 and the refrigerant that has passed through the first expansion mechanism 4 can flow through the first expansion mechanism 4, Through the expansion mechanism outlet flow path (42) and into the cooling flow path (51) of the battery module heat exchanger (5).

The battery module heat exchanger 5 may be provided with a cooling flow passage 51 for cooling a plurality of battery modules M. [

The battery module heat exchanger 5 may be connected to a battery module heat exchanger outlet flow path 52 for guiding the refrigerant passing through the cooling flow path 51 to the second flow path 32. The coolant that has cooled the battery module heat exchanger 5 while passing through the cooling channel 51 may flow to the second flow path 32 through the outlet port 52 of the battery module heat exchanger.

The plurality of battery modules M can be loaded on the battery module heat exchanger 5 and the plurality of battery modules M can be cooled by the refrigerant passing through the cooling channel 51 of the battery module heat exchanger 5 .

The plurality of battery modules M may constitute a battery module heat exchanger 5 and a battery pack P.

The battery pack P includes a carrier 107 mounted on the vehicle, a battery module heat exchanger 5 seated on the carrier 107, and a plurality of battery modules M seated on the battery module heat exchanger 5 . The plurality of battery modules M may be cooled and supported by the battery module heat exchanger 5 in a state where the battery module heat exchanger 5 is mounted on the battery module heat exchanger 5. The battery pack P may further include a top cover 108 covering an upper surface of the carrier 107.

The second expansion mechanism (6) is connected to the condenser outlet flow passage (21) and is capable of expanding the refrigerant flowing in the condenser (2).

The second expansion mechanism (6) may be connected to the third outlet passage (24) of the condenser outlet passage (21). The second expansion mechanism (6) may be connected to the evaporator (7) and the evaporator suction passage (71).

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 refrigerant flowing out of the condenser 2 flows through the first outlet passage 22 and the third outlet passage 24 in sequence and then flows into the second expansion mechanism 6. The refrigerant discharged from the second expansion mechanism 6, As shown in Fig. The refrigerant having passed through the second expansion mechanism (6) can flow to the evaporator (7) after passing through the evaporator suction passage (71).

The evaporator (7) can evaporate the refrigerant 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 vehicle.

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

The evaporator 7 may be connected to an evaporator suction passage 71 for guiding the refrigerant having passed through the second expansion mechanism 6 to the evaporator 7. The evaporator 7 may be connected to the compressor suction passage 21. [ The evaporator 7 may be connected to the third suction passage 15 of the compressor suction passage 21. The refrigerant having passed through the evaporator 7 can be sucked into the compressor 1 after sequentially passing through the third suction passage 15 and the first suction passage 13.

When the refrigeration cycle apparatus for a vehicle includes the supercooling heat exchanger 3, the two-phase refrigerant can be discharged from the battery module heat exchanger 5 and the two-phase refrigerant discharged from the battery module heat exchanger 5 Superheated by the supercooling heat exchanger 3, and then sucked into the compressor 1.

3 does not include the supercooling heat exchanger 3 and the first expansion mechanism 4 is connected to the second outlet flow passage 23 of the condenser outlet flow passage 21 and the battery module heat exchanger 5, Is connected to the second suction passage (14) of the compressor suction passage (11).

3 and 4, the superheated gaseous refrigerant a compressed in the compressor 1 is condensed in the condenser 2 to be sub-cooled, condensed in the condenser 2, b may flow into the first expansion mechanism 4 and the second expansion mechanism 6 and be inflated by the first expansion mechanism 4 and the second expansion mechanism 6.

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 (4) can flow into the battery module heat exchanger (5) in a two-phase state and can be evaporated in the battery module heat exchanger (5). In the battery module heat exchanger 5, the superheated gaseous coolant f can be discharged, and the superheated gaseous coolant f can be sucked into the compressor 1.

 3 and 4, the refrigerant is evaporated after heat exchange with the battery module heat exchanger 5 after the first expansion mechanism 4. Since this evaporation process is an isothermal process, there is no change in temperature, A temperature change occurs in the overheated state after the line, and temperature variations may occur in the plurality of battery modules M when the temperature changes. 3 and 4, the plurality of battery modules M can be cooled differently according to their positions, and the performance of the battery pack P can be improved by the temperature difference of the plurality of battery modules M. In other words, Can be low.

On the other hand, when the refrigerating cycle apparatus for a vehicle includes the supercooling heat exchanger 3 as in the present embodiment, the two-phase refrigerant can flow out from the battery module heat exchanger 5 and flow to the supercooling heat exchanger 3, The superheated gaseous refrigerant can flow out in the second flow path 32 of the supercooling heat exchanger 3 and the plurality of battery modules M to be heat-exchanged with the battery module heat exchanger 5 can be uniformly cooled as a whole.

That is, unlike the comparative example, the temperature deviation of the plurality of battery modules M can be minimized, and the performance of the battery pack P can be high.

Hereinafter, cooling of the plurality of battery modules M by the coolant evenly will be described in detail with reference to FIGS. 1 and 2. FIG.

The superheated gaseous refrigerant a compressed in the compressor 1 is condensed in the condenser 2 and can be subcooled and the supercooled liquid refrigerant b condensed in the condenser 2 is condensed in the supercooling heat exchanger 3 and 2 expansion mechanism (6).

The subcooled liquid refrigerant b flowing into the second expansion mechanism 6 is expanded by the second expansion mechanism 6 and the refrigerant c expanded by the second expansion mechanism 6 is expanded into the two- The refrigerant can be flowed to the evaporator 7 and evaporated in the evaporator 7 and the superheated gaseous refrigerant d can be discharged and sucked into the compressor 1 to be compressed.

On the other hand, the supercooled liquid refrigerant b flowing into the supercooling heat exchanger 3 is passed through the first flow path 31 of the supercooling heat exchanger 3, (B- > g), and the subcooled refrigerant g can be discharged in the first flow path 31 of the supercooling heat exchanger 3. [0052] The subcooled refrigerant g is expanded by the first expansion mechanism 4 and the refrigerant h expanded by the first expansion mechanism 4 is introduced into the cooling channel of the battery module heat exchanger 5 in a two- (51). The refrigerant flowing in the cooling channel 51 of the battery module heat exchanger 5 can escape from the cooling channel 51 of the battery module heat exchanger 5 in the two-phase refrigerant state, and the refrigerant in the two- (I- > j) by heat exchange with the supercooled liquid refrigerant passing through the first flow path 31 while passing through the second flow path 32 of the first flow path 3. The gaseous refrigerant j can be discharged in the second flow path 32 of the supercooling heat exchanger 3. The gaseous refrigerant j can be sucked into the compressor 1 and compressed.

FIG. 5 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the present embodiment is in the simultaneous cooling mode, and FIG. 6 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the present embodiment is in an evaporator cooling mode And FIG. 7 is a view showing a refrigerant flow when the refrigerating cycle apparatus for a vehicle according to the present embodiment is in a battery module cooling mode, and FIG. 8 is a control block diagram of a refrigerating cycle apparatus for a vehicle according to the present embodiment.

The refrigeration cycle apparatus for a vehicle may further include a controller (8) for controlling the compressor (1), the first expansion mechanism (4), and the second expansion mechanism (6).

The vehicle refrigeration cycle apparatus may further include a temperature sensor 9 for sensing the temperature of the battery module M. [

The temperature sensor 9 may be installed in each of the plurality of battery modules M and the control unit 8 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 8 may select the temperature sensed by the temperature sensor provided in any one of the plurality of battery modules M as the temperature of the battery module.

The vehicle may be provided with a desired temperature input unit 10A for inputting a desired temperature of the vehicle. The vehicle may be provided with a vehicle room temperature sensor 10B 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 10A.

If the temperature sensed by the vehicle room temperature sensor 10B is below the lower limit temperature of the desired temperature, the vehicle room may be thermo-off. Conversely, if the temperature sensed by the vehicle room temperature sensor 10B is greater than or equal to the upper limit temperature of the desired temperature, the vehicle room may be thermone.

The control unit 8 can control the compressor 1 and the second expansion mechanism 6 so that the refrigerant flows to the evaporator 7 when the vehicle room is thermally turned on.

The control unit 8 can drive the compressor 1 and the second expansion mechanism 6 can be controlled to an opening degree at which the refrigerant can expand.

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.

The control unit 8 can turn off the compressor 1 when the cooling of the battery module M is unnecessary and the vehicle room is thermo-off.

The control unit 8 can turn on the compressor 1 when the battery module M needs to be cooled and the vehicle room is thermo-off, and the first expansion mechanism 4 can be controlled to an opening degree at which the refrigerant can expand And can control the second expansion mechanism 6 so that the second expansion mechanism 6 is closed.

The refrigeration cycle apparatus for a vehicle is provided with a cooling mode in which the compressor 1 is driven and the first expansion mechanism 4 is closed and the second expansion mechanism 6 regulates the opening to expand the refrigerant, Lt; / RTI > In the cooling mode, the refrigerant compressed in the compressor 1 can be sucked into the compressor 1 after sequentially passing through the condenser 2, the second expansion mechanism 6, and the evaporator 7

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 detected by the temperature sensor 9 is lower than the set temperature and the vehicle room to be cooled by the evaporator 7 is thermo-on, the cooling mode for the vehicle can be performed. In the cooling mode, the first expansion mechanism (4) can be closed, the second expansion mechanism (6) can be adjusted to the opening degree for expanding the refrigerant, and the compressor (1) can be driven. 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 section 9 can drive the compressor 1 only for cooling the passenger compartment.

In the cooling mode, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the superheated gaseous refrigerant. The superheated 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 by the second expansion mechanism 6 into the two-phase refrigerant. The refrigerant expanded by the second expansion mechanism 6 can flow to the evaporator 7 and can pass through the evaporator 7 and the superheated gaseous refrigerant can be discharged in the evaporator 7, (1). ≪ / RTI >

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

7, the compressor 1 is driven, the first expansion mechanism 4 is controlled to an opening degree for expanding the refrigerant, and the second expansion mechanism 6 is closed Battery module cooling mode.

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 vehicle refrigeration cycle apparatus can be adjusted to an opening degree for expanding the refrigerant of the first expansion mechanism 4 when the battery module M is a quick charge and the compressor 1 can be driven and the second expansion mechanism 6 ) May be closed.

The battery module M can be quick-charged while the vehicle is connected to the charging station or the charger. The battery module M can be heated up during charging or discharging. The temperature of the battery module M can be raised to a high level at the time of quick charging in which the battery module M is charged by the charging station or the charger.

That is, at the time of quick charging of the vehicle, the temperature of the battery module M can be raised to a high level. In this case, the battery module cooling mode can be implemented for quick cooling of the battery module M.

In the battery module cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the superheated gaseous refrigerant. The superheated 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 further subcooled while passing through the first flow path 31 of the supercooling heat exchanger 3. The refrigerant that has passed through the first flow path 31 of the supercooling heat exchanger 3 can be expanded by the first expansion mechanism 4 and the two phase refrigerant is introduced into the cooling flow path 51 of the battery module heat exchanger 5 It can pass.

Phase refrigerant can be discharged from the cooling channel 51 of the battery module heat exchanger 5 and the two-phase refrigerant discharged from the cooling channel 51 of the battery module heat exchanger 5 can be discharged from the supercooling heat exchanger 3 It can be overheated while passing through the second flow path 32. In the second flow path 32 of the battery module heat exchanger 3, the superheated gaseous refrigerant can be discharged, and the superheated gaseous refrigerant can be sucked into the compressor 1.

In the battery module cooling mode, the battery module heat exchanger 5 can cool the battery module M quickly.

5, the compressor 1 is driven, the first expansion mechanism 4 is adjusted to an opening degree for expanding the refrigerant, and the second expansion mechanism 6 is configured to expand the refrigerant And can be controlled in a simultaneous cooling mode controlled by opening degree.

The refrigerating cycle apparatus for a vehicle is capable of driving the compressor 1 when the vehicle room to be cooled by the evaporator 7 in the running mode of the vehicle is thermionic and the first expansion mechanism 4 can be adjusted to an opening for expanding the refrigerant , And the second expansion mechanism (6) can be adjusted to an opening degree for expanding the refrigerant.

When the temperature detected by the temperature sensor 9 in the running mode of the vehicle exceeds the set temperature and the vehicle room to be cooled by the evaporator 7 is thermon-on, the compressor 1 can be driven, The expansion mechanism (4) can be adjusted to an opening degree for expanding the refrigerant, and the second expansion mechanism (6) can be adjusted to an opening degree for expanding the refrigerant. The control unit 9 controls the compressor 1 to cause the refrigerant to flow to the evaporator 7 while allowing the refrigerant to flow into the battery module heat exchanger 5 when the temperature detected by the temperature sensor 9 at the time of traveling of the vehicle exceeds the set temperature. ), The first expansion mechanism (4) and the second expansion mechanism (6).

In the simultaneous cooling mode as described above, the compressor 1 can compress and discharge the refrigerant, and the compressor 1 can discharge the superheated gaseous refrigerant. The superheated 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.

Some of the liquid refrigerant subcooled by the condenser 2 can flow to the second expansion mechanism 6 and be expanded to the two-phase refrigerant by the second expansion mechanism 6, as in the cooling mode, The refrigerant expanded by the mechanism 6 can be flowed to the evaporator 7 and evaporated in the evaporator 7 and the gaseous refrigerant evaporated in the evaporator 7 can be sucked into the compressor 1.

On the other hand, the remainder of the liquid refrigerant subcooled by the condenser 2 is further subcooled while passing through the first flow path 31 of the supercooling heat exchanger 3, as in the battery module cooling mode, and then the first expansion mechanism Phase refrigerant flows through the cooling channel 51 of the battery module heat exchanger 5 and then flows into the second channel 32 of the supercooling heat exchanger 4 in the two-phase refrigerant state. In the second flow path 32 of the supercooling heat exchanger 3, superheated gaseous refrigerant is discharged, and such superheated gaseous refrigerant can be sucked into the compressor 1. .

FIG. 9 is a perspective view illustrating a vehicle battery module heat exchanger according to an embodiment of the present invention, FIG. 10 is a cross-sectional view illustrating the inside of a battery pack including a battery module heat exchanger for a vehicle according to an embodiment of the present invention, 11 is a longitudinal sectional view of a vehicle battery module heat exchanger according to an embodiment of the present invention, and FIG. 12 is an exploded perspective view of a battery module heat exchanger for a vehicle according to an embodiment of the present invention.

The battery module heat exchanger 5 of this embodiment includes a pair of spaced apart headers 110 and 120; And a tube-integrated plate 130 connected to the pair of headers 110 and 120.

The battery module heat exchanger 5 may include a plurality of heat exchange modules 101, 102, 103, 104 and 105 and a plurality of heat exchange modules 101, 102, 103 and 104 105 may be connected to the refrigerant tube 106. The plurality of heat exchange modules 101, 102, 103, 104, and 105 may be connected to the refrigerant tubes 106 in series or in parallel.

The plurality of heat exchange modules 101, 102, 103, 104, and 105 may be spaced apart from each other and connected by a refrigerant tube 106.

The plurality of heat exchange modules 101, 102, 103, 104, and 105 may be disposed in the carrier 107 so as to be spaced apart from each other in the front-rear direction and at least one of the heat exchange modules 101, have.

At least one of the plurality of heat exchange modules 101, 102, 103, 104, and 105 includes a pair of spaced apart headers 110 and 120; And a tube-integrated plate 130 connected to the pair of headers 110 and 120.

The pair of the headers 110 and 120 may be disposed inside the carrier 107 in the left-right direction or in the back-and-forth direction. The pair of headers 110 and 120 may be spaced horizontally.

The pair of headers 110 and 120 may be connected by the tube integral plate 130 and the tube integral plate 130 may be connected to the battery module M in a state of being coupled with the pair of the headers 110 and 120. [ Can be cooled.

The tube-integrated plate 130 includes an upper plate portion 140 on which a battery module M is mounted; And a lower flat tube part 150 formed integrally with the lower surface of the upper plate part 140.

The upper plate portion 140 may be formed in a plate shape. The upper surface of the upper plate portion 140 may be a battery module seating surface on which the battery module M is seated and may be a battery module contacting surface contacting the lower end of the battery module M. [

The lower end of the battery module M may be in direct contact with the upper surface of the upper plate portion 140 and the lower end of the upper plate portion 140 may be provided between the lower end of the upper plate portion 140 and the upper plate portion 140, It is also possible that the heat transfer member is disposed further. The battery module M is seated on the upper plate portion 140 even when the battery module M is seated on a separate heat transfer member and the heat transfer member contacts the upper plate portion 140. [

The upper plate portion 140 and the lower flat tube portion 150 can be integrally extruded.

A lower flat tube (not shown) corresponding to the upper plate portion 140 and a lower flat tube (not shown) corresponding to the lower flat tube portion 150 are separately formed and then the lower flat tube is welded to the bottom surface of the upper plate . However, when the upper plate and the lower flat tube are separately manufactured, warp deformation may occur in the upper plate due to the weak rigidity of the upper plate during transportation of the upper plate. On the other hand, when the thickness of the upper plate is increased to secure the rigidity of the upper plate, the weight of the battery module heat exchanger can be increased.

On the other hand, when the upper plate portion 140 and the lower flat tube portion 150 are integrally formed as in the present embodiment, the rigidity of the upper plate portion 140 is increased by the lower flat tube portion 150 , Warping deformation of the tube-integrated plate 130 can be minimized. In addition, since it is not necessary to increase the thickness of the upper plate portion 140, the material cost can be minimized and the battery module heat exchanger 5 can be made lighter.

The upper plate portion 140 may include a first region A where the lower flat tube portion 150 protrudes downward and a second region B where the lower flat tube portion 150 does not protrude . The second area B may be formed in one pair of the upper plate parts 140 and the first area A may be located between the pair of second areas B.

A plurality of battery modules M may be mounted on the tube-integrated plate 130, and the tube-integrated plate 130 may cooperate with the plurality of battery modules M mounted on the upper surface thereof.

The plurality of battery modules M may be in contact with the first area A and the second area B, respectively.

The battery module M can be mounted on the upper surface of the second area B as well as the upper surface of the first area A and the battery module M can be mounted on the upper surface of the first area A, Heat can be delivered to each.

When the pair of headers 110 and 120 are spaced apart from each other in the left and right direction, the tube-integrated plate 130 is formed to be long in the left-right direction to connect a pair of the headers 110 and 120, M may be long in the front-rear direction and short in the left-right direction on the upper surface of the tube-integrated plate 130. The length of the battery module M in the up and down direction may be longer than the length in the left and right direction, and the length in the forward and backward direction may be longer than the length in the left and right direction.

The lower flat tube part 150 may be formed with a plurality of cooling flow paths 51 communicating with the inside of each of the pair of the headers 100 and 200. The plurality of cooling channels 51 may be formed long in the longitudinal direction of the lower flat tube portion 150. Each of the plurality of cooling flow paths 51 may be elongated in a direction orthogonal to the longitudinal direction of the pair of the headers 110 and 20. The plurality of cooling channels 51 may be spaced apart from each other in a direction parallel to the longitudinal direction of the pair of the headers 110 and 120.

A plurality of tube-integrated plates 130 may be connected to each of the pair of headers 110 and 120 and the battery module heat exchanger 5 may include a pair of headers 110 and 120, And a plurality of tube-integrated plates (130) connected to the plurality of tubes (110).

The plurality of tube-integrated plates 130 can be sequentially arranged in a direction parallel to the longitudinal direction of the pair of the headers 110 and 120, and the tube-integrated plates adjacent to each other can be arranged in a relatively rearward And may be brought into contact with the other one of the rear ends located in the rear side.

A plurality of the battery module M may be dispersed and acted on the plurality of tube-integrated plates 130, and the plurality of tube-integrated plates 130 may cooperate with the plurality of battery modules M.

The plurality of tube-integrated plates 130 can be coupled to each other, and each of them can firmly support the battery module by such a coupling structure. The plurality of tube-integrated plates 130 can be minimized from bending downward in a state where they are coupled to each other.

The first protrusion 131 is formed on one of the adjacent pair of tube-integrated plates 130A and 130B and the second protrusion 131 is formed on the other of the pair of tube- (133) may be formed. The first protrusion 131 and the second protrusion 133 can be fixed to each other.

The first protrusion 131 may protrude downward in any one of the pair of tube-integrated plates 130A and 130B. The second projection 133 may protrude downward to the other of the pair of tube-integrated plates 130A and 130B. Further, the latching groove portion 132 may be formed to open on the upper surface of the second projection 133.

The first protrusion 131 and the second protrusion 133 may be formed in the second region B and the plurality of tube integral type protrusions may be coupled and coupled to each other.

The upper plate portion 140 includes a heat transfer plate portion 142 disposed between the pair of the headers 110 and 120 and positioned outside the pair of the headers 110 and 120 and a heat transfer plate portion 142 protruding from the heat transfer plate portion 142 And an insertion plate 144 inserted into the tube insertion hole 112 formed in the header 110 (120).

The heat transfer plate portion 142 may be a battery module heat exchanging portion that is in contact with the battery module M and performs heat exchange with the battery module M. The insertion plate 144 may be a header heat exchanger that is not in direct contact with the battery module M but performs heat exchange with the inside of the header 110 or 120. [

The heat transfer plate portion 142 may be formed in a rectangular plate shape and the insertion plate portion 144 may protrude at both ends in the longitudinal direction of the heat transfer plate portion 142.

The heating plate portion 142 may be a portion located between the pair of the headers 110 and 120 and the insertion plate portion 144 may be formed by the header 110 and 120 other than the boundary portion 145 with the heat conductive plate portion 142. [ As shown in FIG.

The upper plate portion 140 may include a heat transfer plate portion 142 and a pair of insertion plate portions 144. Any one of the pair of insertion plate portions 144 can be inserted into any one of the tube insertion holes 112 of the pair of the headers 110 and 120 and the other one of the pair of insertion plate portions 144 And may be inserted into the other one of the tube insertion holes 112 of the pair of the headers 110 and 120.

The insertion plate 144 can be engaged with the header 110 or 120 in a direction perpendicular to the insertion direction.

The insertion plate portion 144 can be inserted into the header 110 or 120 together with the insertion tube portion 154 described later of the lower flat tube portion 150. The tube integral type plate 130 may have a larger area of the portion to be inserted into the header 110 or 120 than the case where only the insertion tube portion 154 of the lower flat tube portion 150 is inserted into the header 110 or 120. [ have.

At least a part of the insertion plate 144 can be positioned inside the header 110 and 120 and the refrigerant in the header 110 and 120 can be brought into contact with the insertion plate 144 inserted into the tube insertion hole 112 And the refrigerant can heat-absorb the heat while passing through the cooling passage 51, and can also exchange heat with the insertion plate portion 144 in the header 110 (120).

That is, the insertion plate 144 may be a header inner heat exchanger that exchanges heat with the refrigerant in the header 110 (120).

The lower flat tube portion 150 may include a main tube portion 152 positioned between the pair of the headers 110 and 120. The lower flat tube portion 150 includes an insertion tube portion 154 extending from the main tube portion 152 and integrally formed on the bottom surface of the insertion plate portion 144 and inserted into the tube insertion hole 112 together with the insertion plate portion 144 ).

The insertion tube portion 154 may extend from the main tube portion 152 in the longitudinal direction of the main tube portion 152 and may be a portion formed integrally with the main tube portion 152.

The heat transfer plate portion 142 can be engaged with the header 110 and 120 when the insertion plate portion 144 and the insertion tube portion 154 are inserted. The side of the heat transfer plate portion 142 may be in contact with the outer surface of the header 110 (120).

When one pair of the headers 110 and 120 are spaced apart from each other in the left and right direction, one end 142A of the heat transfer plate part 142 may contact one of the pair of the headers 110 and 120 And the other side end 142B of the heat transfer plate part 142 may contact the other one of the pair of the headers 110 and 120.

The compressor intake passage 11, the compressor discharge passage 21, the first expansion mechanism suction passage 41, the first expansion mechanism outlet passage 42, the battery module heat exchanger outlet passage 52, and the evaporator The flow path connecting the respective components such as the suction flow path 71 may be constituted by a tube or a pipe through which the refrigerant passes and may be constituted by a plurality of tubes or a plurality of pipes continuing in the longitudinal direction, It is also possible to include two tubes or pipes arranged with another structure such as a pipe or the like interposed therebetween.

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: supercooling heat exchanger 4: first expansion mechanism
5: Battery module heat exchanger 6: Second expansion device
7: evaporator 8:
9: Temperature sensor 11: Compressor suction flow path
12: compressor discharge flow path 13: first suction flow path
14: second suction passage 15: third suction passage
21: condenser outlet flow path 22: first outlet flow path
23: second outlet flow path 24: third outlet flow path
31: first flow path 32: second flow path
51:

Claims (13)

A compressor connected to the compressor suction passage and the compressor discharge passage and compressing the refrigerant;
A condenser connected to the compressor discharge passage for condensing the refrigerant and connected to the condenser outlet passage;
A battery module heat exchanger having a cooling flow path for cooling a plurality of battery modules;
A first flow path connected to the condenser outlet flow path and through which the refrigerant flowing in the condenser passes; and a supercooling device in which a refrigerant passing through the cooling flow path cools the refrigerant in the first flow path and a second flow path connected to the compressor suction flow path is formed, A heat exchanger;
A first expansion mechanism for expanding the refrigerant between the first flow path and the cooling flow path;
A second expansion mechanism connected to the condenser outlet passage for expanding the refrigerant flowing in the condenser;
And an evaporator that evaporates the refrigerant expanded by the second expansion mechanism and is connected to the compressor suction flow path. The method according to claim 1,
The compressor suction flow path
A first suction passage connected to the compressor;
A second suction passage connecting the first suction passage and the second passage;
And a third suction passage connecting the first suction passage and the evaporator. 3. The method of claim 2,
The condenser outlet flow path
A first outlet channel connected to the condenser;
A second outlet passage connecting the first outlet passage and the first passage;
And a third outlet passage connecting the first outlet passage and the second expansion mechanism. The method according to claim 1,
And the first flow path is connected to the first expansion mechanism and the first expansion mechanism suction flow path. The method according to claim 1,
And the second flow path is connected to the cooling flow path and the outlet channel of the battery module heat exchanger. The method according to claim 1,
And a control unit for controlling the compressor, the first expansion mechanism, and the second expansion mechanism. The method according to claim 1,
Wherein the compressor is driven, the first expansion mechanism is closed, and the second expansion mechanism is controlled in a cooling mode in which the expansion mechanism adjusts the opening to expand the refrigerant. The method according to claim 1,
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 first expansion mechanism is closed and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant. The method according to claim 1,
Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, and the second expansion mechanism is controlled to a closed battery module cooling mode. The method according to claim 1,
If the battery module is quick-charging,
The compressor is driven,
The first expansion mechanism is regulated to an opening degree for expanding the refrigerant,
And the second expansion mechanism is closed. The method according to claim 1,
Wherein the compressor is driven, the first expansion mechanism is controlled to an opening degree for expanding the refrigerant, and the second expansion mechanism is controlled to a simultaneous cooling mode in which the expansion mechanism is controlled to an opening degree for expanding the refrigerant. The method according to claim 1,
When the vehicle is in driving mode
If the vehicle room to be cooled by the evaporator is thermionic,
Wherein the compressor is driven, the first expansion mechanism is adjusted to an opening degree for expanding the refrigerant, and the second expansion mechanism is adjusted to an opening degree for expanding the refrigerant. The method according to claim 1,
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,
And the second expansion mechanism is regulated by an opening degree for expanding the refrigerant.

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