KR20120134313A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE: A cooling device for vehicles is provided to be utilized for battery cooling by selectively introducing vehicle indoor air and cool air. CONSTITUTION: A cooling device for vehicles comprises a case for air conditioner(10), a cooling unit(20), a heating unit(30), a temp door(40), and a cool air guide passage part(70). The case for air conditioner includes an air inlet and one or more air blowing ports. The cooling unit and the heating unit are arranged on the air channel inside the case for air conditioner. The temp door is installed between the cooling unit and the heating unit. The temp door controls the opening degree of warm air path(P2) passing through the heating unit and a cold air path(P1) bypassing the heating unit.

Description

Automotive air conditioning unit {AIR CONDITIONER FOR VEHICLE}

The present invention relates to a vehicle air conditioner, and more particularly, to a vehicle air conditioner having a battery cooling system for cooling a heating element such as a battery for supplying power to a driving motor.

Recently, the development of another type of vehicle that is environmentally friendly and fuel-efficient in a vehicle using a combustion engine, that is, a hybrid vehicle or an electric vehicle, is actively being developed worldwide.

In general, such a hybrid vehicle or an electric vehicle is equipped with a high-capacity battery to supply electric power to the motor when needed, and to charge the electric energy generated from the renewable power source when the vehicle is decelerated or stopped.

Such high-capacity batteries generate heat during repeated charging and discharging, and if the temperature rises rapidly, the battery life will be shortened and the battery cannot be used optimally. Therefore, to maintain the optimum performance of the battery, There is a need for a cooling system that properly cools.

Such a battery cooling system may exist in various forms, but most of them adopt an air cooling method, and supply an air to the battery through a duct through an independently controlled battery and discharge the heated air to the outside of the vehicle. Method is used.

1 shows a schematic configuration of a conventional battery cooling system.

As shown in FIG. 1, the battery cooling system cools the battery 102 by introducing air according to a cooling load of the battery 102, and an inlet duct 103 for sucking air in the vehicle and the air inlet duct 103. A discharge duct for discharging the sucked air is provided, and the vehicle 102 is forced into the inlet duct 103 through the battery cooling device 101 to cool the battery 102 installed under the panel 104.

In this case, the battery cooling device 101 may be assembled with a brush less DC (BLDC) motor in the blower case, and the BLDC motor may be configured with a flange and a wire for electrical connection, which are hermetically installed in the blower case.

However, the conventional battery cooling system has a disadvantage in that it is difficult to control the air volume and temperature of the air flowing through the inlet duct 103 to cool the battery 102.

For this reason, it is difficult to optimize the cooling efficiency of the battery, there is a problem that it is difficult to provide a battery cooling device that is appropriately compatible with the capacity change of the battery.

In order to solve such a conventional problem, the present invention provides a vehicle air conditioner implemented to utilize the cold air generated from the cooling system of the air conditioning device for battery cooling.

At the same time, in the present invention, the cold air generated from the air conditioning system and the air inside the vehicle are selectively introduced to utilize the battery for cooling, and the size of the air conditioner is not changed so that the installation space is not restricted. Provided is a vehicle air conditioner implemented.

An air conditioner for a vehicle according to the present invention includes a battery cooling system having a battery cooling device for cooling a battery and allowing cooling air to flow into the battery side, wherein the air conditioning case includes an air inlet and at least one air outlet. And cooling means and heating means sequentially disposed on an air flow path inside the air conditioning case, and a cold air passage provided between the cooling means and the heating means and bypassing the heating means, and a warm air passing through the heating means. It includes a temper door for adjusting the opening degree of the passage and the cold air guide passage portion for communicating the inside of the air conditioning case and the battery side so that cold air flowing through the cold air passage flows into the battery side.

The vehicle air conditioner according to the present invention comprises a cold air guide flow path inside the air conditioning case, to improve the cooling efficiency of the battery and to selectively supply the cold air of the air conditioner and the indoor air of the vehicle to the battery side of the temperature and air volume of the cooling air Easy to control

In addition, the vehicle air conditioner according to the present invention can be implemented without changing the size of the air conditioner, it is not limited to the installation space of the vehicle without increasing the volume of the air conditioner.

1 shows a schematic configuration of a conventional battery cooling system,
Figure 2 is a block diagram showing the interior of the vehicle air conditioner according to an embodiment of the present invention,
3 is a block diagram showing the interior of the vehicle air conditioner along the line AA of FIG.
Figure 4 shows that the cooling air generated in the vehicle air conditioner according to an embodiment of the present invention and the indoor air is mixed and used for battery cooling,
FIG. 5 illustrates that only cooling air generated in a vehicle air conditioner according to an embodiment of the present invention is used for battery cooling.
FIG. 6 illustrates that only indoor air is used for battery cooling in a vehicle air conditioner according to an embodiment of the present disclosure.

Hereinafter, the technical configuration of the air conditioner for a vehicle will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing the interior of the vehicle air conditioner according to an embodiment of the present invention, Figure 3 is a block diagram showing the interior of the vehicle air conditioner along the line A-A of FIG.

2 and 3, the air conditioner according to an embodiment of the present invention is installed in a vehicle having a high capacity battery, such as a hybrid vehicle or an electric vehicle, the battery for cooling the battery in the vehicle Cooling system is provided. The battery cooling system described hereinafter will be referred to the prior art described in FIG. 1.

The battery cooling system (BCS) includes a battery cooling device 101 including a blower case, a BLDC motor, and the like, forcibly introducing air to the battery 102 to heat the battery 102. Configured to cool. The battery cooling system may be disposed under the lower panel 104 of the vehicle.

An air conditioner according to an embodiment of the present invention is installed on one side of a dash panel that divides an interior of a vehicle from an engine room, and is configured to supply cooling air to the aforementioned battery cooling system.

That is, the air conditioning apparatus according to an embodiment of the present invention includes an air conditioning case 10, a cooling means 20, a heating means 30, a temporal door 40, and a cold air guide flow path part 70.

The air conditioning case 10 has an air inlet and at least one air outlet. That is, the inlet side of the air conditioning case 10 is provided with an air inlet and a blowing device 11, by the blowing device 11 to suck the bet or the outside air into the air conditioning case 10 through the air inlet Ventilate. At the exit side of the air conditioning case 10, a plurality of air discharge ports are formed to discharge air to each part of the vehicle interior.

The air discharge port may include a defrost vent 62, a face vent 63, a floor vent 61, and the like, and the opening degrees of the dispose vent 62, the face vent 63, and the floor vent 61 may be adjusted. A plurality of mode doors 51 for adjusting are installed inside the air conditioning case 10.

The cooling means 20 and the heating means 30 are sequentially arranged on the air flow path inside the air conditioning case 10. The cooling means 20 may be configured as an evaporator core, and the heating means 30 may be configured as an inner condenser. In addition, an auxiliary heating means 35 such as a PTC temperature (Positive Temperature Coefficient Heater) may be installed on the downstream side of the heating means 30.

The temporal door 40 is installed between the cooling means 20 and the heating means 30, and the cold air passage P1 bypassing the heating means 30 and the warm air passing through the heating means 30. The opening degree of the passage P2 is adjusted.

In the air conditioning apparatus configured as described above, after the air introduced into the air conditioning case 10 through the air inlet passes through the cooling means 20 along the internal flow path of the air conditioning case 10, the air conditioner is operated to operate the temporal door 40. The heating means 30 is cooled or heated while bypassing or passing through the heating means 30.

Thereafter, the cooled or heated air is branched to each of the vents 61, 62 and 63 by the opening and closing selection of the mode doors 51 according to various air conditioning modes and discharged to each part of the vehicle interior, thereby cooling the vehicle interior. , Heating and ventilation.

In particular, the air conditioner according to an embodiment of the present invention includes a cold air flow passage part 70.

The cold air guide flow path part 70 is disposed inside the air conditioning case 10, and communicates the inside of the air conditioning case 10 with the battery 102, so that the cold air flowing through the cold air passage P1 may flow. To be introduced to the battery 102 side.

As such, by configuring the cold air guide flow path part 70 in the air conditioning case 10, the cold air for cooling the battery 102 through the cold air flow guide flow path part 70 may be supplied to the battery cooling device 101 side. This, in turn, improves the cooling efficiency of the battery cooling system.

In this case, the cold air guide flow path part 70 is disposed on the warm air passage P2.

Therefore, in configuring the cold air guide flow path part 70 inside the air conditioning case 10, no additional space is required and the volume of the entire air conditioning apparatus is not increased. As a result, the purpose of using the cold air for cooling the battery 102 in the battery cooling system as the discharge air of the air conditioning apparatus can be achieved in a compact structure without increasing the volume of the air conditioning apparatus.

More preferably, the cold air guide flow path part 70 is disposed on both left and right sides of the warm air passage P2.

In this way, the cold air guide flow path part 70 is disposed on both the left and right sides of the warm air passage P2, whereby the flow path of the warm air passage P2 through which the warm air flows through the heating means 30 and the auxiliary heating means 35. While securing a cold air flow path of the cold air flow path flow path unit 70, each of the flow path can be made efficient air flow without interference with each other.

In addition, the inlet of the cold air guide flow path part 70 is disposed in the mixing region where the cold air passage P1 and the hot air passage P2 meet.

By arranging the inlet of the cold air flow path flow path part 70 in the mixing area in this way, the cold air which passed through the cold wind path P1 is smoothly guided to the inlet of the cold air flow path flow path part 70, and passes through the hot air flow path P2. One warmth may be configured to minimally affect the cold air guide flow path part 70. That is, the configuration in which the inlet of the cold air flow path flow passage part 70 is disposed in the mixing area is used to guide the efficient inflow of cold air while maximizing the internal flow path of the air conditioning case 10 without increasing the volume of the air conditioning case 10. It is an optimal structure.

The cold air guide flow path part 70 may be implemented in the form of a pipe or a duct installed in the air conditioning case 10, but is preferably implemented in the form of a partition wall partitioning the inside of the air conditioning case 10.

That is, the floor vent 61 is configured to discharge the air to the floor side of the vehicle and is partitioned by the first partition wall 65 provided in the air conditioning case 10.

In addition, a second partition wall 75 is provided at an inner lower portion of the first partition wall 65, and between the first partition wall 65 and the heating means 30 through the second partition wall 75. The cold air guide flow path part 70 is partitioned from the warm air passage P2.

Since the first partition wall 65 and the second partition wall 75 are both formed integrally with the air conditioning case 10, the cold partition flow path part 70 can be easily formed and divided into partitions by the partition wall. Air tightness is also excellent. In this case, since the second partition is a passage through which cold air flows, heat resistance must be ensured so as not to be affected by the warm air flowing through the warm air passage P2.

Meanwhile, the cold air guide flow path part 70 includes an indoor air inlet 82 and an opening / closing door 81.

The indoor air inlet 82 is for introducing indoor air of the vehicle and is disposed at the outlet side of the cold air guide flow path part 70. In this case, although not shown, the outlet of the cold air guide flow path part 70 is connected to the inlet duct 103 of the lower panel 104 of the vehicle in which the battery 102 is housed, and communicates therein.

The opening / closing door 81 selectively introduces cold discharged through the cold air guide flow path part 70 and indoor vehicle air introduced through the indoor air inlet 82 into the battery 102.

Therefore, the amount of air discharged from the air conditioner and the amount of air in the vehicle interior can be controlled to cool the battery 102, and it becomes easy to optimize the cooling efficiency of the battery 102.

In addition, when the temperature of the indoor air is sufficiently low, the cooling means 20 is not operated, and by adjusting the opening / closing door 81, cooling air is not discharged from the air conditioning apparatus and the battery 102 is cooled only by the indoor air of the vehicle. This can minimize the power consumption.

In this case, the indoor air inlet 82 is preferably formed below the floor vent 61.

Therefore, the cooling of the battery 102 can be performed more efficiently even when the battery 102 is cooled through the vehicle indoor air due to the cold air discharged to the floor vent 61. Can be controlled.

Now, with reference to the accompanying drawings will be described the operation of the vehicle air conditioner according to an embodiment of the present invention.

4 is a diagram showing that the cooling air generated in the vehicle air conditioner according to an embodiment of the present invention and indoor air are mixed and used for battery cooling, and FIG. 5 is a vehicle air conditioner according to an embodiment of the present invention. Only cooling air generated in the device is shown to be used for the battery cooling, Figure 6 shows that only the indoor air in the vehicle air conditioner according to an embodiment of the present invention is used for battery cooling.

First, referring to FIG. 4, the temp door 40 is at a maximum cooling position and the air introduced into the air inlet of the air conditioning case 10 cools past the cooling means 20 to heat the heating means 30. ) And the auxiliary heating means 35 are bypassed and flow into the cold wind passage P1.

A part of the cold air flowing through the cold wind passage P1 is branched and guided to the cold air guide flow path part 70 formed by the first and second partition walls 65 and 75. The opening / closing door 81 provided at the outlet side of the cold air flow guide flow path part 70 opens both the cold branched from the cold wind passage P1 and the vehicle indoor air, so that the cold air of the air conditioner and the air in the vehicle are properly mixed. The battery 102 is cooled by flowing into the battery 102.

Such a mixing mode may be applied at the beginning of the air conditioner of the vehicle, immediately after the operation is stopped, or during the operation, and is suitable for adjusting the temperature and the amount of air for cooling air according to the cooling load of the battery.

Next, referring to FIG. 5, the temp door 40 is at a maximum cooling position, and the air introduced into the air inlet of the air conditioning case 10 cools through the cooling means 20 to heat the heating means ( 30 and the auxiliary heating means 35 bypass and flow into the cold wind passage P1.

A part of the cold air flowing through the cold wind passage P1 is branched and guided to the cold air guide flow path part 70 formed by the first and second partition walls 65 and 75. The opening / closing door 81 provided at the outlet side of the cold air flow passage part 70 is operated to pass only the cold air branched from the cold air passage P1 and to block the indoor air of the vehicle, so that only the cold air of the air conditioner is stored in the battery 102. The battery 102 is cooled by flowing to the side.

The cold air mode of the air conditioner is suitable for use in a state in which the indoor air of the vehicle is not cold when the vehicle is charged at low or high speed.

Next, referring to FIG. 6, when the indoor air of the vehicle is sufficiently cooled by the cooling operation or the like, the opening / closing door 81 is operated to introduce only the indoor air of the vehicle, so that only the indoor air of the cold vehicle is used for the battery 102. Cooling can be performed.

Although the vehicle air-conditioning apparatus according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

10: air conditioning case 20: cooling means
30: heating means 40: temp door
65: first partition wall 75: second partition wall
70: cold air guide flow path 81: opening and closing door
82: indoor air inlet

Claims (7)

In a vehicle air conditioner having a battery cooling system is provided with a battery cooling device 101 for cooling the battery 102 to allow the cooling air flows into the battery 102,
An air conditioning case 10 having an air inlet port and at least one air outlet port;
Cooling means (20) and heating means (30) sequentially arranged on an air passage in the air conditioning case (10);
The opening degree of the cold air passage P1 which is installed between the said cooling means 20 and the heating means 30, and bypasses the said heating means 30, and the warm air passage P2 which passes through the said heating means 30 is shown. Temp door 40 to adjust the; And
The cold air disposed inside the air conditioning case 10 and communicating the inside of the air conditioning case 10 and the battery 102 side such that cold air flowing through the cold air passage P1 flows into the battery 102 side. Vehicle air conditioning apparatus comprising a guide flow path (70). The method according to claim 1,
The cold air guide flow path part 70,
Vehicle air conditioner, characterized in that disposed on the warm air passage (P2). The method according to claim 2,
The cold air guide flow path part 70 is disposed on the left and right sides of the warm air passage (P2). The method according to claim 2,
The inlet of the cold air guide flow path part 70 is disposed in the mixing area where the cold air passage (P1) and the hot air passage (P2) meet. The method according to claim 2,
The air discharge port has a floor vent 61 for discharging air to the floor side of the vehicle,
A first partition wall 65 for partitioning the floor vent 61 is provided in the air conditioning case 10.
Between the first partition 65 and the heating means 30 is provided with a second partition wall 75 for partitioning the cold air flow passage portion 70 and the hot air passage (P2). Vehicle air conditioning system. The method according to claim 1,
The cold air flow passage part 70 is:
An indoor air inlet 82 for introducing indoor air of the vehicle; And
And an opening / closing door 81 for selectively introducing the cold discharged through the cold air guide flow path part 70 and the indoor air flowing through the indoor air inlet 82 into the battery 102. Vehicle air conditioning apparatus. The method of claim 6,
The indoor air inlet (82) is a vehicle air conditioner, characterized in that formed in the lower side of the floor vent (61) for discharging air to the floor side of the vehicle.

Images