KR101558611B1 - Integrated heat management system of clean car - Google Patents

Abstract

The present invention relates to a heat management system for an automobile, and more particularly, to an integrated heat management system of an environmentally friendly vehicle that integrally performs cooling of heat generating parts and indoor air conditioning of vehicles in an environmentally friendly electric vehicle such as a pure electric vehicle, a hybrid vehicle, will be. Particularly, the present invention is configured in such a manner that an air conditioner for controlling an indoor temperature of a vehicle and a cooling device for cooling a heat-generating part of a vehicle are integrated to perform high-efficiency heat management by cooling water heat exchange, The present invention provides an integrated heat management system of an environmentally friendly vehicle capable of eliminating generation of condensed water in a vehicle. In order to achieve the above object, there is provided a cooling device for a vehicle, comprising: a water-cooled cooling device for cooling a heat-generating component of a vehicle; a condenser of a refrigerant circulation type cooling device for indoor cooling of a vehicle; and a radiator for radiating heat of the first cooling water, And a primary heat exchange system part so that the first cooling water is circulated along the first cooling water line to the water cooling type cooling device, the condenser, and the radiator, wherein the primary heat exchange system part An integrated heat management system of an eco-friendly vehicle, wherein one cooling water is integrally used as a cooling medium for cooling the parts of the water-cooled cooling device and a cooling medium for cooling the refrigerant of the condenser.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated heat management system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmentally friendly vehicle, and more particularly, to an integrated heat management system of an environmentally friendly vehicle that integrally performs cooling of heat generating parts and indoor air conditioning of vehicles in an environmentally friendly electric vehicle such as a pure electric vehicle, a hybrid vehicle, .

BACKGROUND ART [0002] Today's conventional internal combustion engine vehicles using fossil fuels such as gasoline and diesel fuel have many problems such as exhaust gas pollution, global warming caused by carbon dioxide, and respiratory diseases caused by ozone generation. And, because the quantity of fossil fuels existing on the earth is limited, it can be depleted someday.

In order to solve the above problems, there has been proposed a hybrid electric vehicle (EV) which is driven by an electric motor, a hybrid electric vehicle (HEV) driven by an engine and an electric motor, Electric automobiles such as a fuel cell electric vehicle (FCEV) that runs by driving an electric motor have been developed.

Such an electric vehicle is a low-pollution environment-friendly vehicle (hybrid vehicle) or a completely pollution-free environment-friendly vehicle (pure electric vehicle and fuel cell vehicle) that can minimize the environmental problems and resource exhaustion problems, (High-voltage battery) as an electricity storage means for supplying electric power to the electric motor, and an inverter for rotating the electric motor.

In the case of a fuel cell vehicle, a fuel cell hybrid system in which a storage means such as a battery is used as an auxiliary power source connected in parallel with a fuel cell as a main power source and a supercapacitor in addition to a battery as an auxiliary power source is also being developed.

The inverter drives the motor by phase-converting the power supplied from the storage means (or the fuel cell) according to a control signal applied from the controller.

In addition, the electric vehicle is equipped with a converter for power conversion, for example, a low voltage DC-DC converter (LDC) for power conversion between a high voltage battery (main battery) and a low voltage battery (auxiliary battery) .

On the other hand, in the case of an electric vehicle, that is, an environmentally friendly vehicle, like a general internal combustion engine automobile, heat is generated due to energy loss in various components such as high-voltage components. Therefore, a cooling device for cooling the electric device is required. The air conditioning and air conditioning system is provided.

Particularly, in electric vehicles, driving systems including high-voltage batteries such as various power electronic components (PE (Power Electronics) parts) such as motors (driving motors, radiator fan motors, etc.), DC- A water cooling type cooling device is provided which is provided with a water tube to cope with heat generation and then supplies and circulates cooling water through the water tube to absorb the heat that the cooling water exits from the component.

The electric vehicle also includes an air conditioner for providing thermal comfort in the interior of the vehicle, that is, a heating device (using water as a heat transfer medium) for performing indoor heating through an electric heater, and a cooling device .

However, unlike the cooling apparatus of the internal combustion engine, the cooling apparatus of the electric vehicle has a low operating temperature of the cooling water due to the system characteristics, and the cooling efficiency of the heat exchanger, that is, the radiator is deteriorated.

FIG. 1 is a graph showing radiator heat radiating performance according to operating temperatures of cooling water according to the same radiator specifications of an internal combustion engine automobile and an electric automobile, showing a difference in heat radiating performance according to ITD and cooling water flow rates of an internal combustion engine vehicle and an electric vehicle Giving.

In FIG. 1, ITD (Inlet Temperature Difference) represents the temperature difference on the inlet side of the radiator, and represents the temperature difference of the air flowing in to cool the cooling water and cooling water flowing into the radiator. Because it is low, the amount of heat dissipation is relatively small in the same radiator specification.

In order to control the indoor temperature of the vehicle, the evaporator of the air conditioner must pass air as a heat exchanging medium to the evaporator. Therefore, the temperature of the evaporator must be kept low, and the bacteria caused by the condensed water propagate to the evaporator, In order to overcome this problem, there is a need for a system that integrates air conditioning and cooling systems.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an air conditioner for controlling an indoor temperature of a vehicle and a cooling device for cooling a heat- The present invention provides an integrated heat management system of an environmentally friendly vehicle capable of performing high efficiency and total heat management and eliminating generation of condensed water in an evaporator.

In order to achieve the above object, the present invention provides a cooling device for a vehicle, comprising: a water-cooled cooling device for cooling a heat-generating component of a vehicle; a condenser of a refrigerant circulating cooling device for indoor cooling of the vehicle; and a radiator for radiating heat of the first cooling water Wherein the primary heat exchanger is disposed on the first cooling water line so that the first cooling water is circulated along the first cooling water line to the water-cooled cooling device, the condenser, and the radiator, And a first cooling water circulating through the first cooling water is integrally used as a cooling medium for cooling parts of the water cooling type cooling device and a cooling medium for cooling the refrigerant of the condenser.

In a preferred embodiment, the primary heat exchange system includes a cooling device for passing the first cooling water to perform cooling of the heat generating component; A water-cooled condenser of a refrigerant circulation type cooling device in which a first cooling water and a refrigerant for indoor cooling are passed to perform heat exchange between the first cooling water and the refrigerant; A radiator and a radiator fan for radiating heat of the first cooling water through the first cooling water; A first cooling water line connected to circulate the first cooling water between the cooling device, the condenser and the radiator; And a first water pump that pressurizes and circulates the first cooling water in the first cooling water line.

The primary heat exchange system may further include: a bypass line installed in the first cooling water line to bypass the first cooling water not to pass through the condenser; And a bypass valve for controlling the flow direction of the first cooling water between the path passing through the condenser and the path passing through the bypass line.

Further, the controller, which is provided to control the driving of the bypass valve, controls the bypass valve to open the bypass line and shut off the cooling water path to the condenser when the compressor constituting the refrigerant circulation type cooling apparatus is in the off state .

And a second heat exchange system for air conditioning in the vehicle, the second heat exchange system being connected to the primary heat exchange system through a refrigerant circulation cooling device, wherein the secondary heat exchange system includes an electric heater for heating the vehicle interior, An evaporator of a refrigerant circulation type cooling device for cooling and an air conditioner heat exchanger for air conditioning in a car are arranged on a second cooling water line so that a second cooling water which is a heat transfer medium for indoor air- And is circulated along the electric heater, the evaporator, and the air conditioner heat exchanger.

The secondary heat exchange system may further include an electric heater for passing the second cooling water to heat the second cooling water; An evaporator of a refrigerant circulation type cooling device in which heat is exchanged between the second cooling water and the refrigerant by passing the second cooling water and the refrigerant; An air-conditioning heat exchanger and an air-conditioning fan for discharging the heat-exchanged air with the second cooling water through the second cooling water through heat exchange between the second cooling water and the air; A second cooling water line connected to pass the second cooling water between the electric heater, the evaporator and the air conditioning heat exchanger; And a second water pump that pressurizes and circulates the cooling water in the second cooling water line.

A water temperature sensor for detecting the temperature of the second cooling water flowing into the air conditioning heat exchanger is provided and the controller controls the rotation speed of the compressor constituting the refrigerant circulation cooling device and the electric power of the electricity And the amount of heat generated by the heater is controlled.

The controller also controls the rotational speed of the compressor constituting the refrigerant circulating cooling apparatus, the calorific value of the electric heater, and the rotational speed of the second water pump based on the vehicle room temperature and the target room temperature detected from the room temperature sensor .

The first cooling water line is provided with a water temperature sensor for detecting the temperature of the first cooling water, and the controller controls the rotation speed of the radiator fan and the first water pump based on the detection value of the water temperature sensor .

Thus, according to the integrated heat management system of the eco-friendly vehicle according to the present invention, efficient heat management through integration of the cooling device and the air conditioner can be performed, thereby improving the heat radiation characteristic of the radiator and contributing to improvement in fuel efficiency of the vehicle .

Also, since the evaporator uses the cooling water as the heat transfer medium for the indoor air conditioning, the temperature of the evaporator can be kept relatively high during the room temperature control process. As a result, problems such as generation of condensate in the evaporator, And a filter for blocking the odor is not required.

In the present invention, since the air-cooled radiator and the water-cooled condenser are connected in series through the cooling water line, there is no particular restriction on the position of the condenser.

1 is an exemplary view showing radiator heat radiation performance according to the operating temperature of cooling water in the same radiator specifications of an internal combustion engine vehicle and an electric vehicle.
2 is a block diagram illustrating an integrated thermal management system for an environmentally friendly vehicle according to the present invention.
3 is a block diagram showing a control system of an integrated heat management system of an environmentally friendly vehicle according to the present invention.
4 is a flowchart showing a control state of the integrated thermal management system according to the present invention.
5 is a view illustrating a state in which the calorific value of the electric heater and the rotational speed of the second water pump are controlled according to the difference between the target room temperature and the room temperature in the integrated heat management system according to the present invention.
6 is a view illustrating a state in which the rotation speed of the radiator fan and the rotation speed of the first water pump are controlled according to the temperature of the first cooling water flowing into the radiator in the integrated thermal management system according to the present invention.
7 is a diagram illustrating a state in which the driving speed of the compressor is controlled according to the difference between the target room temperature and the room temperature in the integrated heat management system according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

The present invention relates to an integrated thermal management system in which a cooling device and an air conditioner (cooling device and heating device) are integrated in an environmentally friendly vehicle such as a pure electric vehicle (EV), a hybrid vehicle (HEV) and a fuel cell vehicle (FCEV).

Particularly, in the present invention, the cooling medium used in the cooling system of the water-cooled cooling apparatus for cooling the heat-generating components in the vehicle and the condenser of the refrigerant circulation type cooling apparatus for indoor cooling of the vehicle are connected to a cooling device, a condenser (Cooling water), and cooling water for component cooling (first cooling water) circulating between the radiators, thereby constituting a primary heat exchange system unit in which the cooling medium is integrated.

Further, in the present invention, in order to perform indoor air conditioning of a vehicle, the air of the cooling device and the heat of the heating device (such as an electric heater) are circulated along a separate line between the evaporator of the cooling device and the heat exchanger for air- And a second heat exchange system part for controlling the room temperature by transmitting the cooling water for air conditioning (second cooling water) through the cooling water circulation type cooling device So that the integrated heat management system capable of performing the total heat management of the high efficiency type by the cooling water heat exchange is constituted.

FIG. 2 is a block diagram showing an integrated heat management system of an environmentally friendly vehicle according to the present invention, and FIG. 3 is a block diagram showing a control system of an integrated heat management system of an environmentally friendly vehicle according to the present invention.

First, the primary heat exchange system includes a water-cooling type cooling device 11 used as a cooling medium for passing a first cooling water (cooling water for component cooling) to cool a heat-generating component in a vehicle such as a PE part, A water-cooled condenser 22 of a refrigerant circulation type cooling device, which is provided to pass a refrigerant for the first cooling water and the refrigerant to perform heat exchange between the first cooling water and the refrigerant and uses the first cooling water as a cooling medium for cooling the refrigerant, A first radiator 12 and a radiator fan 13 for radiating the heat of the first cooling water and a second radiator 12 connected between the cooling device 11 and the condenser 22 and the radiator 12 so as to circulate the first cooling water. A cooling water line 15 and a first water pump 14 (electric water pump) for feeding and circulating the first cooling water in the first cooling water line 15.

The bypass line 16 provided in the first cooling water line 15 for bypassing the first cooling water not to pass through the condenser 22 and the bypass line 16 installed in the first cooling water line 15, (17) for switching the flow direction of the first cooling water between the path passing through the condenser (22) and the path passing through the bypass line (16) have.

In addition, a first inlet water temperature sensor 18 for detecting the temperature of the first cooling water flowing through the first cooling water line 15 at the inlet side of the radiator 12 is provided, and further, An outlet water temperature sensor 19 for detecting the temperature of the first cooling water discharged from the cooling device 11 may be provided.

The condenser 22 constitutes a cooling device of the vehicle together with the expansion valve 23, the evaporator 24 and the compressor 25 and is provided with a cooling device for cooling the exothermic parts of the vehicle in the first cooling water line 15 11 and a radiator 12 for radiating cooling water.

In the cooling system of the refrigerant circulation type, the refrigerant passes through the refrigerant line 21, the condenser 22, the expansion valve 23, the evaporator 24, and the compressor 25. In the present invention, The refrigerant passing through the condenser 22 is heat-exchanged with the first cooling water in the primary heat exchange system portion passing through the condenser, and the refrigerant passing through the evaporator 24 is heat- Exchanged with the second cooling water in the secondary heat exchange system portion passing through the second heat exchange system.

In the cooling system of an electric vehicle, the compressor (25) is generally provided in an electric type in which driving is controlled in accordance with a control signal of the controller (100).

The bypass valve (17) is an electronic valve whose drive is controlled in accordance with a control signal of the controller (100).

Accordingly, the controller 100 controls the driving of the bypass valve 17 according to the operation of the compressor 25 so that the path through which the first cooling water flows passes through the path passing through the condenser 22 and the bypass line 16 The operation of the compressor 25 for circulating the refrigerant is stopped, so that the first cooling water is bypassed through the bypass line 16, and the refrigerant is circulated through the bypass line 16, The flow resistance due to the first water pump 22 is reduced and the power consumption of the first water pump 14 is reduced.

The controller 100 also controls the flow of the first cooling water, which is the cooling water for component cooling, by controlling the driving of the bypass valve 17, and controls the driving control and the rotation speed of the first water pump 14 The flow rate of the first cooling water is controlled by controlling the rotational speed of the first water pump 14 and the rotational speed of the radiator fan 13 is controlled to control the amount of heat radiation in the radiator 12. [

At this time, the controller 100 controls the rotation of the radiator fan 13 and the first water pump 14 based on the detection value of the first inlet water temperature sensor 18 that detects the temperature of the cooling water flowing into the radiator 12 The speed is controlled.

The rotational speeds of the radiator fan 13 and the first water pump 14 are set such that the rotational speed of the radiator fan 13 and the first water pump 14 is lower than the detected value of the first inlet water temperature sensor 18, And may be controlled based on the detection value of the sensor 19.

The controller 100 controls the rotation speed of the compressor 25 during the indoor cooling to control the flow rate of the refrigerant passing through the condenser 22 to control the temperatures of the first cooling water and the second cooling water and the room temperature do.

As described above, in the primary heat exchange system, the cooling medium for cooling the heat generating components such as the PE part and the cooling medium for condensing the refrigerant are integrated into the same first cooling water circulating along the first cooling water line 15, It is possible to set the fluid requiring cooling in the same radiator 12 to a high temperature region and eventually become a high efficiency system such as utilizing an area having a large amount of heat radiation of the internal combustion engine.

On the other hand, the secondary heat exchange system includes an electric heater for indoor heating 31 for heating the second cooling water through the second cooling water (cooling water for air conditioning) which is a heat transfer medium used for air conditioning in the vehicle interior, An evaporator (24) of a refrigerant circulation type cooling device provided so that heat is exchanged between the second cooling water and the refrigerant by passing the refrigerant, and a second cooling water is circulated through the second cooling water and heat exchange is performed between the second cooling water and air, And a second cooling water passed between the electric heater (31), the evaporator (24), and the air conditioning heat exchanger (32), and an air conditioning heat exchanger And a second water pump 34 (which is an electric water pump) for circulating the cooling water in the second cooling water line 35 by circulating the cooling water.

In addition, a second inlet water temperature sensor 36 for detecting the temperature of the second cooling water flowing through the second cooling water line 35 at the inlet side of the air conditioning heat exchanger 32 is provided.

A high-voltage battery (main battery) 52 that provides driving power of an electric motor in an electric vehicle is air-cooled, that is, a system that allows air in a vehicle interior to pass through a high-voltage battery using a cooling fan 54 of a battery- Lt; / RTI >

In the secondary heat exchange system, the operation of the electric heater 31 is controlled by the controller 100. In particular, the amount of heat generated by the electric heater 31 is controlled in accordance with the control signal of the controller 100, 2 The temperature of the cooling water is controlled while the room temperature is controlled.

At this time, the controller 100 controls the amount of heat generated by the electric heater 31 based on the detection value of the second inlet water temperature sensor 36 that detects the temperature of the second cooling water flowing into the air conditioning heat exchanger 32 do.

The controller 100 controls the rotational speed of the second water pump 34 to control the flow rate of the second cooling water passing through the air conditioning heat exchanger 32 so as to control the room temperature, Controls the rotational speed of the air-conditioning fan (33) and controls the air volume of the air that is heat-exchanged with the second cooling water in the air-conditioning heat exchanger (32).

The controller 100 controls the driving of the cooling fan 54 incorporated in the battery cooling apparatus 51. The driving of the cooling fan 54 is controlled by a battery temperature sensor 53). ≪ / RTI >

In the case of the primary heat exchange system, the first cooling water is circulated through the first cooling water line 15 by driving the first water pump 14, and the cooling water is circulated through the cooling device 11 → the condenser The cooling device 11 → the bypass line 16 → the radiator 12 → the cooling device 11 → the cooling device 11 → the cooling device 11 → the cooling device 11 → the cooling device 11 → the radiator 12 → the cooling device 11 → the cooling device 11 → the radiator 12 → the cooling device 11, (When the air conditioner is operated).

At this time, when the cooling device (air conditioner) using the refrigerant is operated, the first cooling water passes through the condenser 22 and performs heat exchange with the refrigerant. When the high-pressure, high-temperature refrigerant of the condenser 22 reaches the first cooling water The first cooling water whose temperature has risen is cooled by the cooling wind in the radiator 12 and then supplied to the cooling device 11 for cooling the heat generating component such as the PE part.

Further, the first cooling water supplied to the cooling device 11 cools the heat generating component and then is transferred to the condenser 22 to cool the refrigerant. After the first cooling water whose temperature rises again is cooled again in the radiator 12, Is supplied to the device (11).

However, since the refrigerant is not circulated through the refrigerant line 21 including the condenser 22, the expansion valve 23, the evaporator 24, and the compressor 25 when the cooling apparatus is turned off, The first cooling water is circulated only between the radiator 12 and the cooling device 11 so as not to pass through the condenser 22 by using the bypass line 16. [

Of course, the cooling water that has cooled the heat generating component in the cooling device 11 is transferred to the radiator 12 in a warmed state, cooled by the cooling air, and then supplied to the cooling device 11 for cooling the component.

In the secondary heat exchange system, the second cooling water is supplied to the evaporator 24, the electric heater 31, the air conditioning heat exchanger 32, and the evaporator 24 by the second water pump 34 .

At this time, the second cooling water is heated by being cooled by heat exchange with the refrigerant of the evaporator 24 or heated by the electric heater 31, and then passes through the air conditioning heat exchanger 32. In the air conditioning heat exchanger 32, Exchanged with the air supplied by the fan 33 and the air exchanged with the second cooling water is discharged into the vehicle cabin to control the room temperature.

During the operation of the air conditioner, the second cooling water cooled by the evaporator (24) is supplied to the air conditioner heat exchanger (32) to cool the room. When the heating device is in operation, 2 cooling water is supplied to the air conditioning heat exchanger 32 and the indoor heating is performed and the controller 100 is installed in the vehicle interior to drive each constituent part based on the detection value of the indoor temperature sensor 41 for detecting the room temperature Thereby controlling the room temperature to the target room temperature.

Hereinafter, an operation mode of the integrated thermal management system according to the present invention will be described.

FIG. 4 is a flowchart showing a control state of the integrated thermal management system according to the present invention. When the user operates the operation unit of the air conditioner and the controller 100 receives an operation signal from the operation unit, I.e., the room temperature, with the target indoor temperature set by the user.

At this time, if the room temperature is lower than the target indoor temperature, or if the indoor temperature is equal to the target room temperature and the outdoor air temperature detected by the outdoor air temperature sensor 42 is lower than the preset reference temperature (?), Off to stop the operation of the cooling device, and the heating device is operated.

Here, the reference temperature? May be set to 12 to 15 占 폚, which is an outside air temperature condition in which the room temperature is maintained without operating the air conditioner.

Of course, the cooling device 11 is operated in a state in which the heat generating component such as the PE component is operated irrespective of the room temperature.

At the same time, the electric heater 31 is operated to control the rotational speed of the second water pump 34 driven for the circulation of the second cooling water, and the room is heated until the room temperature reaches the target room temperature .

At this time, the second cooling water is heated by the electric heater 31 and then passes through the air-conditioning heat exchanger 32. At the same time, the air-cooling fan 33 is operated and the second cooling water is supplied to the second cooling water of the air- The heated air heated by the heater is discharged to the inside of the vehicle to be heated.

The heating value of the electric heater 31 for heating the second cooling water and the rotation speed of the second water pump 34 for circulating the second cooling water are appropriately controlled when the operation of the cooling device is stopped and the heating device is operated. The calorific value of the electric heater 31 or the rotational speed of the second water pump 34 is controlled in proportion to the difference between the indoor temperature and the indoor temperature feedback value, that is, the detected value of the indoor temperature sensor 41.

At this time, the calorific value of the electric heater 31 may be controlled according to the actual measurement temperature of the second cooling water flowing into the air conditioning heat exchanger 32, that is, the detection value of the second inlet water temperature sensor 36.

5 is a diagram illustrating a state in which the calorific value of the electric heater and the rotational speed of the second water pump are controlled in accordance with the difference between the target room temperature and the room temperature in a state where the cooling device is off and the heating device is operated.

As shown in the figure, the difference between the target indoor temperature and the actual indoor temperature (detected value of the indoor temperature sensor) or the target indoor temperature and the target temperature of the second cooling water on the inlet side of the heat exchanger for air conditioning, (Detected value of the second inlet side water temperature sensor) is larger, the amount of heat generated by the electric heater can be controlled to be larger.

Also, the larger the difference between the target indoor temperature and the actual indoor temperature (detected value of the indoor temperature sensor) is, the more the rotational speed of the second water pump is increased.

The refrigerant is not circulated through the refrigerant line 21 including the condenser 22 due to the turning off of the compressor 25 because the operation of the air conditioner is stopped and thus the first water pump 14 is driven The bypass valve 17 is controlled to open the bypass line 16 and shut off the cooling water path to the condenser 22.

The first cooling water circulated by the first water pump 14 flows into the radiator 12 through the bypass line 16 without passing through the condenser 22 and then cooled.

Thereafter, the first cooling water cooled in the radiator 12 is supplied again to the cooling device 11 for cooling the parts to cool the parts, and the first cooling water is continuously circulated between the radiator 12 and the cooling device 11. [

The controller 100 controls the rotation speed of the radiator fan 13 and the rotation speed of the first water pump 14 in accordance with the temperature of the first cooling water detected by the first inlet water temperature sensor 18, As shown in FIG.

6 is a graph showing the relation between the rotational speed of the radiator fan and the rotational speed of the first water pump 18 in accordance with the temperature of the first cooling water flowing into the radiator in a state where the cooling device is turned off and parts are cooled, In which the rotation speed of the motor is controlled.

As shown in the drawing, the higher the temperature of the first cooling water flowing into the radiator (the detection value of the first inlet water temperature sensor), the greater the rotation speed of the radiator fan and the rotation speed of the first water pump.

On the other hand, when the indoor temperature detected by the indoor temperature sensor 41 is higher than the target indoor temperature, or when the indoor temperature is equal to the target indoor temperature and the outdoor air temperature detected by the outdoor temperature sensor 42 is equal to the preset reference temperature? The cooling device is operated while maintaining the operation of the cooling device 11 for cooling the component. At this time, the rotation speed of the compressor 25 for circulating the refrigerant and the rotation speed of the second water pump 34 are properly controlled.

In particular, the rotational speed of the compressor 25 can be controlled in proportion to the difference between the target indoor temperature and the indoor temperature feedback value, that is, the detected value of the indoor temperature sensor 41, 2, that is, the detection value of the second inlet side water temperature sensor 36. In this case,

7 is a diagram illustrating a state in which the rotational speed of the compressor is controlled in accordance with the difference between the target room temperature and the room temperature in a state in which the air conditioner is in operation. The target room temperature and the actual room temperature The larger the difference between the target temperature of the second cooling water on the inlet side of the heat exchanger for the air conditioning and the actual temperature of the second cooling water on the inlet side (the detection value of the second inlet water temperature sensor) depending on the target room temperature, Respectively.

The second water pump 34 controls the rotational speed of the second water pump 34 to control the flow rate of the second cooling water circulating between the evaporator 24 and the air conditioning heat exchanger 32, Is controlled in proportion to the difference between the target indoor temperature and the indoor temperature feedback value, that is, the detected value of the indoor temperature sensor 41. [

The first cooling water is supplied to the radiator 12 and the first cooling water is supplied to the radiator 12 while the first water pump 14 is being driven. It is necessary to circulate it between the cooling apparatuses 11.

The refrigerant is circulated to the condenser 22 by driving the compressor 25 when the cooling device is operated and the first cooling water is passed through the condenser 22 in order to cool the refrigerant in the condenser 22, The bypass valve 17 is controlled so as to close the line 16 and open the passage through the condenser 22.

The first cooling water that has cooled the components is cooled by the condenser 22 and then flows into the radiator 12 to be cooled.

Thereafter, the first cooling water cooled in the radiator 12 is supplied again to the cooling device 11 for cooling the parts to cool the parts, and the first cooling water is continuously circulated between the radiator 12 and the cooling device 11. [

6, the controller controls the rotation speed of the radiator fan and the rotation speed of the first water pump appropriately in accordance with the first cooling water temperature at the radiator inlet side, that is, the detection value of the first inlet water temperature sensor Respectively.

If necessary, the electric heater 31 can be operated. The amount of heat generated by the electric heater 31 is controlled in proportion to the difference between the target room temperature and the detected value of the indoor temperature sensor 41.

Alternatively, the calorific value of the electric heater 31 may be controlled according to the actual measurement temperature of the second cooling water flowing into the air conditioning heat exchanger 32, that is, the detection value of the second inlet water temperature sensor 36. At this time, The calorific value of the electric heater is controlled in accordance with the difference between the target temperature of the second cooling water on the inlet side of the heat exchanger for air conditioning according to the temperature and the temperature of the actual second cooling water on the inlet side (detection value of the second inlet water temperature sensor).

When the user operates the operation unit of the air conditioner and receives the off operation signal from the operation unit, the first cooling water is passed through the bypass line 16 and the cooling device 11 for cooling the component Except for the first water pump 14 for circulating the first cooling water and the radiator fan 13 for cooling the first cooling water, the compressors 25, The driving of the electric heater 31, the second water pump 34, and the air conditioning fan 33 is all stopped.

The controller 100 controls the rotation speed of the radiator fan 13 in accordance with the temperature of the first cooling water detected by the first inlet water temperature sensor 18, And the rotation speed of the first water pump 14 are properly controlled.

Thus, in the integrated heat management system according to the present invention, efficient heat management through integration of the cooling device and the air conditioner can be performed, thereby improving the heat dissipation characteristics of the radiator and contributing to the fuel efficiency improvement of the vehicle.

Particularly, a fluid requiring cooling in the radiator can be set to a high temperature region, and as a result, a high efficiency system such as utilizing an area having a large heat radiation amount of the internal combustion engine can be realized.

Also, since the evaporator uses the cooling water as the heat transfer medium for the indoor air conditioning, the temperature of the evaporator can be kept relatively high during the room temperature control process. As a result, problems such as generation of condensate in the evaporator, And a filter for blocking the odor is not required.

In the present invention, since the radiator and the condenser are both air-cooled heat exchangers, a two-row arrangement in which the two heat exchangers are disposed before and after the heat exchanger is required. However, in the present invention, two heat exchangers are connected in series via a cooling water line. A single row can be arranged, and there is no particular restriction on the position of the condenser.

As a result, it is possible to solve the problem of increase in the pressure drop amount and decrease in the heat radiation efficiency due to the conventional two-row arrangement of the air-cooled heat exchanger, and to reduce the bumper hole of the vehicle and increase the freedom of design. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Modified forms are also included within the scope of the present invention.

11: Cooling unit 12: Radiator
13: radiator fan 14: first water pump
15: first cooling water line 16: bypass line
17: bypass valve 18: first inlet water temperature sensor
19: outlet water temperature sensor 21: refrigerant line
22: condenser 23: expansion valve
24: evaporator 25: compressor
31: electric heater 32: air-conditioning heat exchanger
33: air conditioning fan 34: second water pump
35: second cooling water line 36: second inlet water temperature sensor
41: Indoor temperature sensor 42: Outside temperature sensor
51: battery cooling device 52: high voltage battery
53: Battery temperature sensor 54: Cooling fan

Claims (9)

A condenser 22 of a refrigerant circulation type cooling device for indoor cooling of a vehicle and a radiator 12 for radiating heat of a first cooling water are connected to a first cooling water line (15), and the first cooling water is circulated through the water cooling type cooling device (11), the condenser (22) and the radiator (12) along the first cooling water line (15) ,
The primary heat exchange system unit integrates the first cooling water circulating along the first cooling water line 15 as a cooling medium for cooling components of the water-cooling type cooling apparatus 11 and a cooling medium for cooling the refrigerant of the condenser 22 Lt; / RTI &
Further comprising a secondary heat exchange system part for vehicle interior air conditioning, which is connected to the primary heat exchange system part via a refrigerant circulation type cooling device,
The secondary heat exchange system includes an electric heater 31 for heating a vehicle interior, an evaporator 24 for a refrigerant circulation cooling device for indoor cooling of the vehicle, an air conditioning heat exchanger 32 Is disposed on the second cooling water line 35 so that the second cooling water which is the heat transfer medium for indoor air conditioning of the vehicle along the second cooling water line 35 flows through the electric heater 31, the evaporator 24, And is configured to circulate along the base 32,
A water temperature sensor 36 for detecting the temperature of the second cooling water flowing into the air conditioning heat exchanger 32 is provided and the controller 100 controls the refrigerant circulation type cooling apparatus based on the detection value of the water temperature sensor And controls the rotational speed of the compressor (25) and the amount of heat generated by the electric heater (31) to constitute the integrated heat exchanger.
The method according to claim 1,
The primary heat exchanger system includes:
A cooling device (11) for passing the first cooling water to perform cooling of the heat generating component;
A water-cooled condenser (22) of a refrigerant circulation type cooling device in which a first cooling water and a refrigerant for indoor cooling are passed to perform heat exchange between the first cooling water and the refrigerant;
A radiator (12) and a radiator fan (13) for radiating heat of the first cooling water through the first cooling water;
A first cooling water line (15) connected between the cooling device (11), the condenser (22) and the radiator (12) so that the first cooling water circulates;
A first water pump 14 for pressurizing and circulating the first cooling water in the first cooling water line 15;
And an integrated heat management system for an environmentally friendly vehicle.
The method according to claim 1 or 2,
A bypass line (16) installed in the first cooling water line (15) to bypass the first cooling water not to pass through the condenser (22);
A bypass valve (17) for controlling a flow direction of the first cooling water between a path passing through the condenser (22) and a path passing through the bypass line (16);
Further comprising: an integrated thermal management system for an environmentally friendly vehicle.
The method of claim 3,
The controller 100 provided for controlling the driving of the bypass valve 17 opens the bypass line 16 and supplies the refrigerant to the condenser 22 when the compressor 25 constituting the refrigerant circulation cooling apparatus is in the off state. And controls the bypass valve (17) to block the cooling water path.
delete The method of claim 1,
The secondary heat exchanger system includes:
An electric heater (31) for passing the second cooling water to heat the second cooling water;
An evaporator (24) of a refrigerant circulation type cooling device in which heat is exchanged between the second cooling water and the refrigerant by passing the second cooling water and the refrigerant;
An air conditioning heat exchanger (32) and an air conditioning fan (33) for discharging the heat exchanged air with the second cooling water through the second cooling water through the heat exchange between the second cooling water and the air;
A second cooling water line (35) connected between the electric heater (31), the evaporator (24), and the air conditioning heat exchanger (32) so as to allow the second cooling water to pass therethrough;
A second water pump 34 that pressurizes and circulates the cooling water in the second cooling water line 35;
And an integrated heat management system for an environmentally friendly vehicle.
delete The method of claim 6,
The controller 100 controls the rotational speed of the compressor 25 constituting the refrigerant circulation type cooling apparatus based on the vehicle room temperature and the target indoor temperature detected from the indoor temperature sensor 41, And the rotation speed of the second water pump (34)
The method according to claim 1,
The first cooling water line 15 is provided with water temperature sensors 18 and 19 for detecting the temperature of the first cooling water and the controller 100 controls the radiator fans 18 and 19 based on the detection values of the water temperature sensors 18 and 19. [ (13) and the first water pump (14).

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