Patent Publication Number: US-2016245595-A1

Title: Cooling module

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to Korean Patent Application No. 10-2015-0025628 filed on Feb. 24, 2015 and Korean Patent Application No. 10-2016-0011454 filed on Jan. 29, 2016, the disclosures of which are incorporated herein by reference in their entirety. 
     FIELD OF THE INVENTION 
     The present invention relates to a cooling module and, more particularly, to a cooling module in which a second radiator and a first condenser are positioned alongside each other in front of a first radiator, and a second condenser is provided within the second radiator, thus having a reduced size, while supporting high refrigerant condensing performance. 
     BACKGROUND OF THE INVENTION 
     In general, in a vehicle with an internal combustion installed therein, heat generated as an engine operates is transmitted to a cylinder head, a piston, and a valve, and thus, when temperatures of these components are excessively increased, they are thermally expanded or degraded to result in degradation of intensity, lifespan of an engine is shortened, combustion deteriorates to cause knocking or preignition to degrade an output from the engine. 
     Also, when a fuel cell stack is incompletely cooled, an oil film of an inner circumferential surface of the cylinder is cut, degrading a lubrication function, engine oil is changed to cause abnormal abrasion of a cylinder, and a piston is fused to an inner wall surface of a cylinder. 
     In a vehicle, in addition to a fuel cell stack, electric/electronic components including a motor, an inverter, and a battery stack, need also to be cooled, and here, a coolant which has passed through the fuel cell stack and a coolant which has passed through the electric/electronic components have a difference in temperature, so they cannot have a single cooling system. 
       FIGS. 1A and 1B  show a cooling system for a vehicle, in which  FIG. 1A  illustrates a fuel cell stack cooling system, and  FIG. 1B  illustrates an electronic component cooling system. 
     In detail, the fuel cell stack cooling system  10  includes a water pump  15  circulating a coolant for cooling a fuel cell stack  1 , a first radiator  11  cooling a coolant, a first coolant storage tank  13  supplying a coolant to the first radiator  11 , and a first coolant adjusting cap  12 . 
     Here, in the fuel cell stack cooling system  10 , the first radiator  11 , the water pump  15 , and the fuel cell stack  1  are connected through a first connection line  14 . 
     Also, the electronic field component cooling system  20  includes a water pump  25  circulating a coolant for cooling an electronic component  2 , a second radiator  21  cooling a coolant, a second coolant storage tank  23  supplying a coolant to the second radiator  21 , and a second coolant adjusting cap  22 . 
     Here, an example of the electronic component cooling system  20  formed to include the electronic component  2  in which the electronic component  2  includes an inverter and a starter/generator is illustrated 
     Also, like the fuel cell stack cooling system  10 , in the electronic component cooling system  20 , the second radiator  21 , the water pump  24 , and the electronic component  2  are connected through a second connection line  24 . 
     Here, the first radiator  11  and the second radiator  21  include a condenser  30 , a fan and shroud assembly  40  to form a cooling module  50 , and are heat-exchanged with wind and air introduced through the fan and shroud assembly  40 . 
     An example of the cooling module  50  is illustrated in  FIG. 2 . 
     However, the cooling module  50  illustrated in  FIG. 2  is difficult to have a sufficient condensing efficiency because a size of the condenser  30  is reduced by a region in which the second radiator  21  is formed, and the second radiator  21  also has difficulty in sufficiently securing an amount of coolant flowing therein. 
     Another example of the cooling module  50  is illustrated in  FIG. 3 . 
     The cooling module  50  illustrated in  FIG. 3  includes a condenser  30 , a second radiator  21 , and a first radiator  11  arranged in parallel according to a direction of air flow. However, in the configuration of  FIG. 3 , air heated through the condenser  30  is to pass through the second radiator  21 , negatively affecting performance of the second radiator  21 . 
     In addition, temperatures of air supplied to the second radiator  21  are significantly different according to load amounts of the condenser  30 , making it difficult to secure stable performance of the second radiator  21 . 
     Thus, it is required to develop a cooling module which may be reduced in size, while securing sufficient performance of the first radiator, the second radiator, and the condenser constituting the cooling module. 
     SUMMARY OF THE INVENTION 
     The present invention provides a cooling module in which a second radiator and a first condenser are positioned alongside each other in front of a first radiator and a second condenser is provided within the second radiator, whereby cooling condensing performance of the cooling module is increased, while the cooling module is reduced in size. 
     The present invention also provides a cooling module in which a second radiator and a first condenser are positioned alongside each other to reduce a pressure drop amount of air, eliminating a reduction in an air volume of wind, to thus enhance cooling performance of a coolant and condensing performance of a condenser. 
     The present invention also provides a cooling module in which wind is not blocked by a pipe and a configuration of a pipe is simplified to facilitate assembling, and which is reduced in size. 
     In an aspect, a cooling module includes: a first radiator configured to cool a fuel cell stack; a second radiator positioned in a predetermined area in front of the first radiator in an air flow direction and configured to cool an electronic component; and a first condenser positioned in the other remaining area in front of the first radiator in the air flow direction and heat-exchanged with ambient air to condense a refrigerant, and further includes: a second condenser provided within the second radiator and heat-exchanged with a coolant to condense a refrigerant. Accordingly, in the cooling module of the present invention, since the second radiator and the first condenser are positioned alongside each other in front of the first radiator and the second condenser is provided within the second radiator, refrigerant condensing performance may be increased, while the cooling module is reduced in size. 
     The second radiator may include a pair of first header tanks configured to include a combination of a header and a tank and provided alongside each other and spaced apart from each other by a predetermined distance; a first tube fixed to the first header tank in both ends thereof to form an electronic component coolant flow channel; and a first fin interposed between the tubes, whereby the second condenser may be provided within the first header tank. In particular, in the cooling module, the second radiator may be spaced apart from the first header tank in a height direction, and the second condenser may be provided at a lower side within the first header tank, whereby a coolant may be effectively cooled by wind and a refrigerant may be effectively cooled by the cooled coolant. 
     The cooling module may further include: an inlet pipe configured to supply a refrigerant to the second condenser; a connection pipe configured to supply the refrigerant, which has passed through the second condenser, to the first condenser; and an outlet pipe configured to discharge the refrigerant which has passed through the first condenser, whereby the refrigerant may be supplied to the second condenser, the second condenser and the condenser may be connected, and the refrigerant of the first condenser may be discharged. 
     In detail, the first condenser may include: a pair of second header tanks provided alongside each other and spaced apart from each other by a predetermined distance; a second tube fixed to the second header tanks in both ends thereof to form a refrigerant flow path; a second fin interposed between the second tubes; and a vapor-liquid separator provided on one side of the second header tank, whereby the second condenser is a watercooling type condenser cooled by a coolant, and the first condenser may be an aircooling type condenser cooled by air. 
     In the cooling module, the second header tanks are provided to be spaced apart from one another in a width direction of a vehicle, the vapor-liquid separator is positioned to be adjacent to the second radiator, and one side of the connection pipe is connected to an upper region of the second header tank in which the vapor-liquid separator is provided, whereby wind is not blocked by the pipe and a connection of the pipe may be simplified. 
     In particular, the connection pipe may include: a first pipe unit positioned alongside the first header tank in which the second condenser is provided in a length direction; and a second pipe unit configured to extend from the first pipe unit and bent in a length direction of the vapor-liquid separator, whereby movement of wind passing through a first tube and first fin formation region of the second radiator and a second tube and second fin formation region of the first condenser directly heat-exchanged with ambient air is not interfered. 
     The connection pipe may include: a (1-1)th pipe unit bent from a left lower end of the second radiator and positioned in a vertical direction along an outer side surface of the second radiator; and a (2-1)th pipe unit positioned in a direction of the first condenser along an upper surface of the second radiator. 
     The outlet pipe may be formed in the second header tank where the vapor-liquid separator is not provided. 
     Through the aforementioned configuration of the cooling module, a refrigerant introduced through the inlet pipe is condensed through the second condenser in a first area, introduced through the connection pipe and condensed, while passing through a predetermined area of the first condenser, in a second area, and vapor-liquid-separated through the vapor-liquid separator in a third area, and the liquid refrigerant separated through the vapor-liquid separator is supercooled in a fourth area, and is subsequently discharged through the outlet pipe, and here, the second area has an even number of paths so that the refrigerant is transferred from the second header tank where the vapor-liquid separator is connected to the second header tank where the vapor-liquid separator is not connected, and is subsequently returned again, and since the outlet pipe is provided in the second header tank where the vapor-liquid separator is not connected, the fourth area has an odd number of paths, and thus, the second tube of the first condenser has an odd number of paths. 
     According to the configuration of the present invention, in the cooling module, when the second condenser is not provided in the second radiator, the first condenser may be configured to be equal to or larger than the second radiator. 
     In the cooling module, when the second condenser is included in the second radiator, the second radiator may be configured to be larger than the first condenser. 
     Accordingly, in the cooling module of the present invention, since the second radiator and the first condenser are positioned alongside each other in front of the first radiator and the second condenser is provided within the second radiator, the cooling module may have enhanced refrigerant condensing performance, while reduced in size. 
     In particular, in the cooling module of the present invention, since the second radiator and the first condenser are positioned alongside each other, a pressure drop amount of air is reduced, an air volume of wind is not reduced, enhancing cooling performance of a coolant and condensing performance of the condenser. 
     Also, in the cooling module of the present invention, wind is not blocked by the pipe and a configuration of the pipe is simplified to facilitate assembling and reduce the size of the cooling module. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS. 1A and 1B  are schematic views illustrating a cooling system for a vehicle of prior art. 
         FIGS. 2 and 3  are views schematically illustrating the prior art cooling module. 
         FIGS. 4 to 6B  are a perspective view, an exploded perspective view, and front views of a cooling module according to an embodiment of the present invention. 
         FIG. 7  is a schematic cross-sectional view of a region forming a second radiator of a cooling module according to an embodiment of the present invention. 
         FIG. 8  is a schematic cross-sectional view of a region forming a first condenser of a cooling module according to an embodiment of the present invention. 
         FIGS. 9 and 10  are a fragmentary cross-sectional view and a perspective view illustrating an example of a second condenser of a cooling module according to an embodiment of the present invention. 
         FIG. 11  is a front view illustrating a flow of a refrigerant in a cooling module according to an embodiment of the present invention. 
         FIG. 12  is a front view illustrating another flow of a refrigerant in a cooling module according to an embodiment of the present invention. 
         FIGS. 13 to 16  are front views illustrating another flow of a refrigerant in a cooling module according to an embodiment of the present invention. 
         FIGS. 17A and 17B  are elevational views illustrating an example of changing sizes of a second radiator and a first condenser constituting a cooling module according to an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE INVENTION 
     Hereinafter, a cooling module  1000  according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. 
       FIGS. 4 to 6B  are a perspective view, an exploded perspective view, and front views of the cooling module  1000  according to an embodiment of the present invention,  FIG. 7  is a schematic cross-sectional view of a region forming a second radiator  200  of the cooling module  1000  according to an embodiment of the present invention, and  FIG. 8  is a schematic cross-sectional view of a region forming a first condenser  300  of the cooling module  1000  according to an embodiment of the present invention. 
     A cooling module  1000  according to an embodiment of the present invention includes a first radiator  100 , a second radiator  200 , a first condenser  300 , and a second condenser  400 . 
     The first radiator  100 , a component for cooling a fuel cell stack, may include a pair of header tanks  110  provided alongside each other and spaced apart from each other another by a predetermined distance, a tube  120  whose both ends are fixed to the header tank  110 , and a fm  130  interposed between the tubes  120 . That is, as a coolant for cooling a fuel cell stack flows in the first radiator  100 , the first radiator  100  may be heat-exchanged with ambient air so as to be cooled. 
     The second radiator  200 , a component for cooling an electronic component, is positioned in a predetermined area of a front side of the first radiator  100  in an air flow direction. The electronic component is an electronic component including a motor, an inverter, and a battery stack, in addition to a fuel cell stack, or may be electronic components which has a heating temperature lower than that of the fuel cell stack and which is to be cooled. Here, the second radiator  200  may include a first header tank  210 , a first tube  220 , and a first fin  230 . 
     The first header tank  210  is provided as a pair alongside each other and spaced apart from each another by a predetermined distance, and is formed of a combination of a header  211  and a tank  212 . The header  211  has a tube insertion hole (not shown) formed to have a size corresponding to the first tube  220  such that the first tube  220  may be inserted therein, and forms a space in which an electronic component coolant flows. Here, the second condenser  400  is installed in one of the first header tanks  210 , and has a hollow portion  212   a  to supply a refrigerant to the second condenser  400  and discharge a refrigerant therefrom. 
     Both ends of the first tube  220  are fixed to the first head tank  210  to form a coolant flow channel, and the first fin  230  is interposed between the first tubes  220 . 
     Here, the first header tanks  210  of the second radiator  200  are spaced apart from each other in a height direction, and the second condenser  400  is provided within the upper or lower first header tank  210 . 
     The first condenser  300  is positioned in front of the first radiator  100  in an air flow direction and provided alongside the second radiator  200 . That is, the first condenser  300  is positioned together with the second radiator  200  in front of the first radiator  100 , and here, the second radiator  200  is positioned in a predetermined region in front of the first radiator  100  and the first condenser  300  is positioned in the other region in front of the first radiator  100 . That is,  FIGS. 7 and 8  are cross-sectional views of the cooling module  1000  in a lateral direction according to an embodiment of the present invention, and specifically,  FIG. 7  illustrates a region in which the second radiator  200  is formed and  FIG. 8  illustrates a region in which the first condenser  300  is formed. Accordingly, in the cooling module  1000  according to an embodiment of the present invention, the second radiator  200  and the first condenser  300  are positioned alongside each other in front of the first radiator  100 , and since the second condenser  400  is provided within the second radiator  200 , refrigerant condensing performance may be increased, while the cooling module  1000  is reduced in size. 
     Also, the first condenser  300 , a component heat-exchanged with ambient air to condense a refrigerant, includes a second header tank  310 , a second tube  320 , a second fin  330 , and a vapor-liquid separator  340 . 
     The second header tanks  310  are spaced apart from each other by a predetermined distance and provided alongside each other. 
     Both ends of the second tube  320  are fixed to the second header tanks  310  to form a refrigerant flow channel. Here, the second fin  330  is interposed between the second tubes  320 . 
     The vapor-liquid separator  340 , which is connected to one of the second header tanks  310  to separate a vapor refrigerant and a liquid refrigerant, has a structure in which a vapor refrigerant is sent to an upper side and a liquid refrigerant is sent to a lower side such that only the liquid refrigerant is finally moved to the second tube  320  to induce supercooling. Here, in the cooling module  1000 , the second header tanks  310  of the first condenser  300  are provided to be spaced apart from each other in a width direction of a vehicle, and the vapor-liquid separator  340  is connected to the second header tank  310  positioned to be adjacent to the second radiator  200 . 
     Here, the cooling module  1000  of the present invention may include a fan and shroud assembly  600 , and in  FIGS. 7 and 8 , an example in which the fan and shroud assembly  600  is provided behind the first radiator  100  in an air flow direction is illustrated. 
     The second condenser  400 , a component cooling a refrigerant together with the first condenser  300 , is provided within the first header tank  210  of the second radiator  200  and heat-exchanged with an electronic component to cool a refrigerant. As the second condenser  400 , various types of condenser may be provided within the first header tank  210  of the second radiator  200 , and  FIG. 9  illustrates a dual-pipe type condenser and  FIG. 10  illustrates a stacked type condenser using a plate  430 . The second condenser  400  illustrated in  FIG. 9  is a dual-type condenser having an inner pipe  422  and an outer pipe  421 , in which a refrigerant flows between the inner pipe  422  and the outer pipe  421  and an electronic component coolant flows within the inner pipe  422  and outside of the outer pipe  421 , thus being heat-exchanged.  FIG. 9  illustrates an example in which an inner fin (not shown) is provided between the inner pipe  422  and the outer pipe  421 . Illustrated in  FIG. 10  is a type in which a refrigerant flows in an internal space formed by the plate  430 , and an electronic component coolant flows at an outer side thereof, causing heat-exchange therebetween. Both configurations illustrated in  FIGS. 9 and 10  include a pair of inlet/outlet boss portion  410  fixed to a hollow formed in the first header thank  210  and allowing a refrigerant to flow in and out therethrough. 
     In the cooling module  1000  according to an embodiment of the present invention, preferably, a refrigerant passes through the second condenser  400  and is subsequently supplied to the first condenser  300 . Thus, an inlet pipe  510  allowing a refrigerant to flow in therethrough is connected to one of the inlet/outlet boss portions  410 , and a connection pipe  520  allowing a refrigerant to be discharged therefrom so as to be supplied to the first condenser  300  is connected to the other inlet/output boss portion  410 . Also, the first condenser  300  includes an outlet pipe  530  discharging a refrigerant which has passed through the first condenser  300 . 
     The inlet pipe  510  extends in a width direction of a vehicle from a lower side in order to supply a refrigerant to the inlet/outlet boss portion  410 , and the connection pipe  520  supplies a refrigerant, which has passed through the second condenser  400 , to the first condenser  300 . In other words, the refrigerant supplied to the second condenser  400  through the inlet pipe  410  is heat-exchanged with an electronic component coolant so as to be cooled for the first time, and the refrigerant supplied to the first condenser  300  through the connection pipe  520  is heat-exchanged with ambient air so as to be cooled for the second time, vapor/liquid separated, supercooled, and subsequently discharged through the outlet pipe  530 . 
     The inlet pipe  510 , the connection pipe  520 , and the outlet pipe  530  may be variously formed according to positions of the first condenser  300 , the second condenser  400 , and the second radiator  200 , and a configuration thereof and an internal refrigerant flow will be described in more detail hereinafter. 
     In the cooling module  1000  illustrated in  FIGS. 4 through 6 , the configuration in which the second condenser  400  is positioned within the first header tank  210 , the second header tanks  310  are formed in a width direction of the vehicle, the vapor-liquid separator  340  is positioned at one of the pair of second header tanks  310  adjacent to the second radiator  200  (at the central portion in the width direction of the vehicle), and thus, the connection pipe  520  is connected to an upper portion of the second header tank  310  to which the vapor-liquid separator  340  of the first condenser  300  is connected, thus simplifying the pipe is illustrated as an example. 
     In detail, the connection pipe  520  includes a first pipe portion  521  positioned alongside the first header tank  210  in which the second condenser  400  is provided in a length direction (width direction) and a second pipe portion  522  extending from the first pipe portion  521  and bent in a length direction (height direction) of the vapor-liquid separator  340 . 
     Accordingly, in the cooling module  1000  of the present invention, since the first tube  220  and first fm  230  formation region of the second radiator  200  and the second tube  320  and second fin  330  formation region of the first condenser  300  substantially heat-exchanged with air are not interrupted by the connection pipe  520  connecting the first condenser  300  to the second condenser  400 , a degradation of heat exchange performance may be prevented. Also, preferably, the outlet pipe  530  is formed in the second header tank  310  in which the vapor-liquid separator  340  is not provided, and preferably, an extended portion of the outlet pipe  530  is fixed together with the inlet pipe  510  in parallel to the second header tank  310 . 
     Meanwhile, in the present invention, a connection pipe may be configured in such a form as illustrated in  FIG. 613 .  FIGS. 6A and 6B  are front views of the cooling module  1000  according to the present invention. The cooling modules  1000  of  FIGS. 6A and 6B  are different in installation position of connection pipes, and the other components of the cooling modules  1000  are the same. 
     That is, the connection pipe  520  serves to supply a refrigerant, which has passed through the second condenser  400 , to the first condenser  300 . The connection pipe  520  illustrated in  FIG. 6B  includes a (1-1)th pipe portion  521  led from the second condenser  400 , bent from a lower end of the left side of the second radiator  200  and extending along an outer side surface of the second radiator  200  in a vertical direction (height direction) and a (2-1)th pipe portion  522  bent at an upper end of the left side and extending in a horizontal direction (width direction) toward the first condenser  300 . That is, the connection pipe  520  illustrated in  FIG. 6B  is configured to surround the side surface and the upper surface of the second radiator  200  and connect the second condenser  400  and the first condenser  300 . 
     Even though the connection pipe  520  is connected through such a piping configuration, a refrigerant supplied to the second condenser  400  through the inlet pipe  510  is heat-exchanged with an electronic component coolant so as to be cooled for the first time, and the refrigerant supplied to the first condenser  300  is heat-exchanged with ambient air so as to be cooled for the second time, vapor/liquid separated, supercooled, and subsequently discharged through the outlet pipe  530 . 
       FIG. 11  is a view illustrating a flow of a refrigerant in the cooling module  1000  according to an embodiment of the present invention, and  FIG. 12  is a view illustrating another flow of a refrigerant in the cooling module  1000  according to an embodiment of the present invention ( FIGS. 11 and 12  illustrate specific refrigerant flows of the configurations of  FIGS. 4 through 6B ). Here, as for a specific refrigerant flow, a refrigerant introduced through the inlet pipe  510  passes through a second condenser  400  so as to be condensed in a first area A 1 , the refrigerant introduced through the connection pipe  520  passes through a predetermined region of the first condenser  300  so as to be condensed in a second area A 2 , the refrigerant is vapor-liquid separated through the vapor-liquid separator  340  in a third area A 3 , and the liquid refrigerant separated through the vapor-liquid separator  340  is supercooled in a fourth area A 4 , and subsequently discharged through the outlet pipe  530 . That is, heat-exchange areas through the second tube  320  of the first condenser  300  are the second area A 2  and the fourth area A 4 , and the second area A 2  includes a (2-1)th area A 2 - 1  in which an refrigerant basically introduced as the connection pipe  520  is connected to an upper portion of the second header tank  310  adjacent to the vapor-liquid separator  340  is moved to the other second header tank  310  (i.e., the second header tank  310  where the vapor-liquid separator  340  is not provided) and a (2-2)th area A 2 - 2  in which the refrigerant is returned to the one second header tank  310  (i.e., the second header tank  310  adjacent to the vapor-liquid separator  340 ), and here, the areas may be repeated to have an even number of baffles according to the number and positions of baffles within the second header tank  310 . The fourth area A 4  is an area in which only a liquid refrigerant, which is obtained after the refrigerant has passed through the vapor-liquid separator  340  in the third area A 3 , is moved to be supercooled. The fourth area A 4  has an odd number of paths as the outlet pipe  530  is formed at the other second header tank  130 . 
       FIG. 11  illustrates an example in which the second area A 2  has two paths and the fourth area A 4  has one path. In detail, a refrigerant introduced to the second condenser  400  through the inlet pipe  510  is cooled by an electronic component coolant (in the first area Al), introduced to the one second header tank  310  through the connection pipe  520  and moved to the other second header tank  310  through the second tube  320  in the (2-1)th area A 2 - 1 , and move to the one second header tank  310  through the other second tube  320  in the (2-2)th area A 2 - 2  so as to be cooled by ambient air (in the second area A 2 ), and a liquid refrigerant separated upon passing through the vapor-liquid separator  340  (in the third area A 3 ) is moved to the second header tank  310  through the other second tube  320  so as to be supercooled (in the fourth area A 4 ) and discharged through the outlet pipe  530 . 
       FIG. 12  illustrates another example in which the second area A 2  has four paths and the fourth area A 4  has one path. The example illustrated in  FIG. 12  is the same as the example illustrated in  FIG. 11 , except that the second area A 2  has four paths including a (2-1)th area A 2 - 1  in which a refrigerant is introduced to one second header tank  310  through the connection pipe  520  and moved to the other second header tank  310  through the second tube  320 , a (2-2)th area A 2 - 2  in which the refrigerant is moved to the one second header tank  310  through the other second tube  320 , a (2-3)th area A 2 - 3  in which the refrigerant is moved to the other second header tank  310  through the other second tube  320 , and a (2-4)th area A 2 - 4  in which the refrigerant is moved to the one second header tank  310  through the other second tube  320 . 
       FIGS. 13 to 16  are views illustrating another flow of a refrigerant in the cooling module  1000  according to an embodiment of the present invention. First,  FIG. 13  illustrates an example similar to the configuration illustrated in  FIG. 11 , but the second condenser  400  is provided within the upper first header tank  210  of the second radiator  200 . Also, the inlet pipe  510  is connected to the left side of the second condenser  400 , the connection pipe  520  is connected to the second header tank  310  of the first condenser  300  adjacent to the second condenser  400 , and the outlet pipe  530  extends from a lower side of the second header tank  310  where vapor-liquid separator  340  is not formed. 
     Compared with the configuration illustrated in  FIG. 11 , the configuration illustrated in  FIGS. 14 through 16  illustrates an example in which the second radiator  200  and the first condenser  300  are provided at the mutually opposite sides. In detail, the inlet pipe  510  is connected to one side (right side in  FIG. 14 ) of the second condenser  400  within a lower first header tank  210  of the second radiator positioned at the right side to transfer a refrigerant, the connection pipe  520  connects the other side of the second condenser  400  to the right second header tank  310  of the first condenser  300 , and the outlet pipe  530  extends from a lower portion of the right second header tank  310  so as to be adjacent to the lower first header tank  210  of the second radiator  200 . Here, a refrigerant passes through the first area Al to the fourth area A 4 , and the second area A 2  includes (2-1)th area A 2 - 1  in which a refrigerant is introduced to the right second header tank  310  of  FIG. 14  through the connection pipe  520  and moved to the left second header tank  310  through the second tube  320 , a (2-2)th area A 2 - 2  in which the refrigerant is moved to the right second header tank  310  through the other second tube  320 , and a (2-3)th area A 2 - 3  in which the refrigerant is moved to the left second header tank  310  through the other second tube  320 . 
       FIGS. 15 and 16  illustrate an example having a configuration similar to that of  FIG. 14 , but the second condenser  400  is provided within the upper first header tank  210  of the second radiator  200 . Also, the inlet pipe  510  is connected to the right side of the second condenser  400 , and the connection pipe  520  is connected to the second header tank  310  of the first condenser  300  adjacent to the second condenser  400 . Here,  FIG. 15  illustrates an example in which the outlet pipe  530  extends to be adjacent to the lower first header tank  210 , and  FIG. 16  illustrates an example in which the outlet pipe  530  extends between the second radiator  200  and the first condenser  300 , and is bent and extends to be adjacent to the upper first header tank  210 . 
     In  FIGS. 11 through 16 , flows within the inlet pipe  510 , the connection pipe  520 , and the outlet pipe  530  are indicated by the dotted lines. Various cooling modules  1000  illustrated in  FIGS. 11 through 16  may be variously modified in the position where the second condenser  400  is provided, dispositions of the second radiator  200  and the first condenser  300 , and the number and positions of baffles formed within the first condenser  300  according to embodiments. 
     In the present invention, sizes of the second radiator  200  and the first condenser  300  may be different. Here, the sizes of the second radiator  200  and the first condenser  300  may be different according to the presence or absence of the second condenser  400 . 
     In a case in which the second condenser  400  is provided within the second radiator  200 , the second radiator  200  is configured to be larger than the first condenser  300 , as in the embodiments described above. On the other hand, in a case in which the second condenser  400  is not provided within the second radiator  200 , the first condenser  300  is configured to be equal to or larger than the second radiator  200 . This is because the first condenser  300  needs to perform a function of the second condenser  400 . An example in which the size of the first condenser  300  is larger than that of the second radiator  200  is illustrated in  FIG. 17A .  FIG. 17B  illustrates a case in which a size of the first condenser  300  and a size of the second radiator  200  are substantially the same. 
     Even though the second radiator  200  and the first condenser  300  are different in sizes, refrigerant condensing performance of the cooling module  1000  is enhanced and a size thereof may be reduced. 
     In the above exemplary systems, although the methods have been described on the basis of the flowcharts using a series of the steps or blocks, the present invention is not limited to the sequence of the steps, and some of the steps may be performed at different sequences from the remaining steps or may be performed simultaneously with the remaining steps. Furthermore, those skilled in the art will understand that the steps shown in the flowcharts are not exclusive and may include other steps or one or more steps of the flowcharts may be deleted without affecting the scope of the present invention.