KR20110126270A - Air conditioning system of hybrid vehicle - Google Patents

Abstract

PURPOSE: An air conditioning system of a hybrid vehicle is provided that by using the cool air of the air conditioning system, a battery and related devices are cooled to the high efficiency. CONSTITUTION: An air conditioning system of a hybrid vehicle comprises a battery device(B), an air conditioning system(10), and a supply means. The battery device supplies the electricity to the electric motor. The air conditioning system performs cooling or heating in the vehicle, and comprises a case for air conditioner(12), an evaporator(14), and a heater core(16). By inhaling the air of the air conditioning system and supplying to the battery device it cools the battery device or the supply means heats.

Description

Air Conditioning System for Hybrid Vehicles {AIR CONDITIONING SYSTEM OF HYBRID VEHICLE}

The present invention relates to an air conditioner of a hybrid vehicle, and more particularly, by efficiently cooling or heating the battery and related devices by using the cold and warm air conditioners of the air conditioner, thereby making the battery and related devices always in an optimal state. An air conditioner of a hybrid vehicle.

A hybrid vehicle is a vehicle that uses an electric motor and an internal combustion engine in parallel, and has a very high fuel economy, low vehicle maintenance costs, and very low emissions, thereby reducing air pollution.

Such a hybrid vehicle includes a battery for supplying electricity to an electric motor, a motor control unit for controlling the electric motor, a DC / DC converter for appropriately converting a voltage of the battery, and a cooling device for cooling these devices. It is provided.

In particular, the cooling device cools the battery, the motor controller, and the DC / DC converter that emit high temperature heat. Thus, overheating of the respective devices is prevented. This extends the life of each device.

As an example of a chiller, there is an air-cooled chiller. As shown in FIG. 1 and FIG. 2, the air-cooled cooling device includes an inlet pipe 3 for sucking air in the vehicle cabin and introducing the air into the battery case 1, and air passing through the battery case 1. The discharge pipe 5 which discharges is provided.

Such a cooling device sucks air in the vehicle compartment and supplies the air into the battery case 1, and thus, the battery 7, the motor controller 8, and the DC / DC converter 9 installed inside the battery case 1 are provided. )). Thus, overheating of the respective devices is prevented.

However, such a conventional cooling device has a disadvantage in that the cooling efficiency of the battery 7 and related devices is somewhat lowered because it is a structure for cooling the battery 7 and related devices by sucking air in the vehicle interior.

In particular, it is pointed out that when the temperature of the battery 7 rises and the cooling load increases, the air inside the vehicle cannot sufficiently cool the high temperature battery 7 and related devices.

On the other hand, there is also a method for lowering the air temperature in the cabin so that the cooling efficiency of the battery 7 and the related devices can be increased. For example, there is also a method of lowering the air temperature in the cabin by operating the air conditioner 10.

However, in this case, since the temperature inside the vehicle is lowered, there is a disadvantage that the passengers of the vehicle can feel cold, and due to such disadvantages, the comfort in the vehicle is remarkably degraded.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide an air conditioner of a hybrid vehicle capable of efficiently cooling a battery and related devices.

Another object of the present invention is to provide a hybrid vehicle air conditioner which can extend the life of the battery and the related devices by efficiently cooling the battery and the related devices.

Still another object of the present invention is to provide an air conditioner of a hybrid vehicle capable of efficiently cooling a battery and related devices regardless of the temperature in a vehicle interior.

A further object of the present invention is a hybrid vehicle capable of cooling the battery and related devices efficiently without affecting the comfort of the cabin by configuring the battery and related devices to be cooled regardless of the temperature in the vehicle interior. To provide an air conditioning system.

In order to achieve this object, the air conditioner of the hybrid vehicle of the present invention, the battery unit for supplying electricity to the electric motor, and the air conditioning unit for cooling and heating in the vehicle, the air conditioner is an air conditioning case, An air conditioning apparatus for a hybrid vehicle including an evaporator and a heater core installed in the air conditioning case, the air conditioning apparatus comprising: a supply means for drawing air from the air conditioning apparatus to supply the battery apparatus to cool or heat the battery apparatus; Characterized in that.

Preferably, the supply means, the cold air withdrawal passage capable of withdrawing the cold air passing through the evaporator; A warmth withdrawal passage capable of withdrawing the warmth that has passed through the heater core; A battery duct for pumping air drawn into the cold air draw passage and the warm air draw passage to the battery device side; It characterized in that it comprises a temperature control means for adjusting the temperature of the air blown to the battery device side.

According to the hybrid vehicle according to the present invention, since the battery and the related devices are cooled by using the cold air of the air conditioner, the battery and the related devices can be efficiently cooled.

In addition, while using the cold air of the air conditioning apparatus, because the structure having a different supply path from the cold supplied into the vehicle, there is an effect that can efficiently cool the battery and related devices regardless of the temperature in the vehicle interior.

In addition, since the battery and the related devices can be cooled regardless of the temperature inside the vehicle, there is an effect that the battery and the related devices can be efficiently cooled without affecting the comfort of the vehicle.

In addition, the present invention, since the battery and the related devices can be heated by using the warmth of the air conditioning apparatus, it is possible to quickly increase the battery and related devices to the activation temperature in the low temperature winter. Therefore, there is an effect that allows the battery and the related devices to achieve the optimum performance in a short time.

In addition, since the temperature and air volume of the cold or warm air supplied to the battery and the related devices can be differentially controlled according to the temperature of the battery, the battery and the related devices can be efficiently cooled or heated. Therefore, there is an effect that it is possible to keep the performance of the battery and the related devices at the optimum state at all times.

1 is a side view showing a conventional hybrid vehicle,
2 is a cross-sectional view taken along the line II-II of FIG. 1;
3 is a view showing an air conditioning apparatus for a hybrid vehicle according to the present invention;
4 is a view showing in detail the features of the hybrid vehicle air conditioner according to the present invention;
5 is a graph showing the effect of the present invention, showing the change in the opening amount of the cold, hot air draw passage according to the battery temperature,
6 is a graph showing the operation and effect of the present invention, showing a change in rotational speed of a blower for a battery according to battery temperature;
7 is a flowchart showing an operation example of a hybrid vehicle air conditioner according to the present invention;
8 is a view showing a case in which an air conditioning apparatus of a hybrid vehicle according to the present invention is applied to a dual type air conditioning apparatus;
FIG. 9 is a cross-sectional view taken along line VII-VII of FIG. 8.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of an air conditioner for a hybrid vehicle according to the present invention will be described in detail with reference to the accompanying drawings (the same components will be described with the same reference numerals).

First, before looking at the features of the hybrid vehicle air conditioner according to the present invention, the hybrid vehicle will be briefly described with reference to FIGS. 3 and 4.

The hybrid vehicle includes a battery device B for supplying power to an electric motor (not shown).

The battery device B includes a battery case 1, a battery 7 installed in the battery case 1, a motor controller 8, a DC / DC converter 9 and a cooling device for cooling these devices. (C) is provided.

In particular, the cooling device (C) includes an inlet pipe (3) for sucking air in the vehicle cabin and introducing it into the battery case (1), and a discharge pipe (5) for discharging air passing through the battery case (1). Equipped.

The hybrid vehicle includes an air conditioner 10 for cooling and heating the interior of the vehicle interior.

The air conditioning apparatus 10 includes an air conditioning case 12, and the evaporator 14 and the heater core 16 are installed in the air conditioning case 12.

The evaporator 14 cools the air blown into the inner passage 10a of the air conditioning case 12, and the heater core 16 heats the air blown into the inner passage 10a.

Next, the features of the hybrid vehicle air conditioner according to the present invention will be described in detail with reference to FIGS. 3 and 4.

First, referring to FIG. 4, the air conditioner according to the present invention includes a cold air outlet passage 20 formed at a downstream side of the evaporator 14 and a warm air outlet passage formed at a downstream side of the heater core 16. (22) is provided.

The cold air drawing passage 20 bypasses the cold air having passed through the evaporator 14 and draws it out of the air conditioning case 12.

The warmth withdrawal passage 22 bypasses the warmth of the high temperature passing through the heater core 16 and draws it out of the air conditioning case 12.

On the other hand, the cold air draw passage 20 and the warm air draw passage 22 is connected to each other through a connection passage 24, the connection passage 24 is provided with a temperature control door 26.

The temperature control door 26 adjusts the amount of opening of the cold air draw passage 20 and the warm air draw passage 22 while rotating between the cold air draw passage 20 and the warm air draw passage 22. Therefore, the amount of cold air and the amount of warm air drawn out through the connection passage 24 are adjusted.

3 and 4, the air conditioner of the present invention includes a battery duct 28 for pumping cold and warm air drawn out from the connection passage 24 into the battery case 1.

The battery duct 28 connects the connection passage 24 and the battery case 1 to each other. Therefore, the cold and warm air drawn out from the connection passage 24 is pumped into the battery case 1.

As a result, the cold and warm air drawn from the air conditioner 10 may pass through the inside of the battery case 1. As a result, it is possible to cool or heat the battery 7 and related devices installed inside the battery case 1.

In particular, the summer 7 cools the battery 7 and associated devices. Thus, overheating of the battery 7 and associated devices is prevented. In winter, the battery 7 and related devices are heated. Thus, the temperature of the battery 7 and associated devices is quickly increased to become the "activation temperature". This allows the battery 7 and related devices to exhibit optimal performance in a short time.

 On the other hand, the battery duct 28 is provided with a battery blower 28a. The battery blower 28a inhales cold and warm air flowing along the battery duct 28 and then blows the air into the battery case 1.

Therefore, the air volume of the cold and warm air blown to the battery case 1 is further increased. As a result, the cold and warm air supplied into the battery case 1 may be blown with a sufficient air volume. As a result, the cooling efficiency or heating efficiency of the battery 7 and related devices installed inside the battery case 1 is improved.

4, the air conditioner of the present invention includes control means 30 for controlling the temperature control door 26 in accordance with the temperature of the battery 7.

The control means 30 controls the temperature control door 26 according to the temperature sensor 32 for sensing the temperature of the battery 7 and the temperature of the battery 7 input from the temperature sensor 32. The control unit 34 is included.

The controller 34 is equipped with a microprocessor. If the temperature of the battery 7 input from the temperature sensor 32 is greater than a preset reference temperature, the controller 7 determines that the battery 7 and related devices are overheated. Thus, the opening position of the temperature control door 26 is controlled in the direction of opening the cold air outlet passage 20.

Thus, cool air may be introduced into the battery duct 28. In this way, cool air can be supplied to the battery case 1. As a result, the battery 7 and related devices installed inside the battery case 1 can be cooled. This prevents overheating of the battery 7 and associated devices.

On the contrary, if the temperature of the battery 7 input from the temperature sensor 32 is lower than the "reference temperature", it is determined that the temperature of the battery 7 and related devices is lowered and its performance may be degraded. In accordance with the determination, the opening position of the temperature control door 26 is controlled in the direction in which the warmth draw passage 22 is opened.

Thus, the warm air can be introduced into the battery duct 28. This allows the warmth to be supplied to the battery case 1. As a result, the battery 7 and related devices installed inside the battery case 1 can be heated. As a result, the temperature of the battery 7 and related devices may be rapidly increased to maintain the optimum temperature.

On the other hand, it is preferable that the "reference temperature" incorporated in the control part 34 is comprised at 65 degreeC. This is because it has been shown that the optimum performance when the temperature of the battery 7 and related devices is 65 ℃.

When the temperature of the battery 7 input from the temperature sensor 32 is greater than "reference temperature", the controller 34 controls the temperature control door 26 in the direction of opening the cold air outlet passage 20. However, it controls to differentiate the opening position of the temperature control door 26 in accordance with the degree of temperature rise of the battery (7).

In particular, as shown in FIG. 5, the opening degree of the cold air drawing passage 20 is controlled to increase gradually in proportion to the increase in temperature of the battery 7. Therefore, as shown in FIG. 4, the amount of cold air blown to the battery case 1 is also gradually increased in proportion to the temperature rise of the battery 7.

As a result, as the temperature of the battery 7 rises compared to the "reference temperature", a larger amount of cool air can be blown into the battery case 1. This further improves the cooling efficiency of the battery 7 and associated devices.

In addition, when the temperature of the battery 7 input from the temperature sensor 32 is less than "reference temperature", the control unit 34 opens the temperature control door 26 in the direction of opening the warm-out passage 22. While controlling, it controls to differentiate the opening position of the temperature control door 26 according to the degree of temperature drop of the battery (7).

In particular, as shown in Figure 5, inversely proportional to the temperature drop of the battery 7 is controlled so that the opening amount of the warm-out draw passage 22 is gradually increased. Therefore, as shown in FIG. 4, the amount of warm air blown into the battery case 1 is gradually increased in inverse proportion to the temperature drop of the battery 7.

As a result, as the temperature of the battery 7 decreases as compared with the "reference temperature", a larger amount of warmth can be blown into the battery case 1. This ensures that the temperature of the battery 7 and associated devices can always be kept optimal.

Referring again to FIG. 4, the controller 34 of the present invention may control the rotational speed of the battery blower 28a according to the temperature of the battery 7.

That is, when the temperature of the battery 7 input from the temperature sensor 32 is "reference temperature", the battery blower 28a is turned off. Therefore, the operation of the battery blower 28a is limited, thereby preventing unnecessary electricity consumption.

And if the temperature of the battery 7 input from the temperature sensor 32 is larger or smaller than "reference temperature", the battery blower 28a is turned ON. Therefore, the amount of cold and warm air blown to the battery case 1 is increased. This effectively cools or heats the battery 7 and associated devices.

On the other hand, when the temperature of the battery 7 input from the temperature sensor 32 is greater than the "reference temperature", the controller 34 operates the blower 28a for the battery, but the temperature rise degree of the battery 7 is increased. The rotational speed of the blower 28a for the battery is controlled accordingly.

In particular, as shown in FIG. 6, the rotational speed of the battery blower 28a is increased in proportion to the temperature rise of the battery 7. Therefore, as shown in FIG. 4, the air volume of the cold air blown to the battery case 1 is also gradually increased in proportion to the temperature rise of the battery 7.

As a result, as the temperature of the battery 7 rises compared to the "reference temperature", a larger amount of cold air can be blown into the battery case 1. This further improves the cooling efficiency of the battery 7 and associated devices.

The controller 34 operates the blower 28a for the battery when the temperature of the battery 7 input from the temperature sensor 32 is lower than the “reference temperature”, but the temperature of the battery 7 decreases. Accordingly, the rotation speed of the battery blower 28a is controlled.

In particular, as shown in FIG. 6, the rotation speed of the blower 28a for the battery is increased in inverse proportion to the temperature drop of the battery 7. Therefore, as shown in FIG. 4, the air volume of the warm air blown to the battery case 1 is also gradually increased in inverse proportion to the temperature drop of the battery 7.

As a result, as the temperature of the battery 7 decreases as compared with the "reference temperature", a larger amount of warm air can be blown into the battery case 1. This ensures that the battery 7 and associated devices always maintain optimum temperatures.

Next, a control method of the air conditioner having such a configuration will be described with reference to FIGS. 4 and 7.

First, in a state where the air conditioner 1 is turned on (S101), it is determined whether the temperature of the battery 7 is equal to the "reference temperature" (S103).

As a result of the determination, if it is equal to the "reference temperature", it is determined that the battery 7 and related devices maintain the optimum temperature state, the position of the temperature control door 26 is controlled to a neutral state, and the battery blower 28a ) To OFF (S105).

On the other hand, if the determination result is not the same as the "reference temperature" (S103-1), it is again determined whether the temperature of the battery 7 is greater than the "reference temperature" (S107).

If the determination result is greater than the reference temperature, it is determined that the battery 7 and related devices may be overheated, and the temperature control door 26 is controlled in the direction of opening the cold air outlet passage 20 for the battery. The blower 28a is turned on (S109).

Then, the cool air passing through the evaporator 14 is drawn out to the battery duct 28 and supplied to the battery case 1, and the supplied cool air is supplied to the battery 7 and the related devices installed inside the battery case 1. Cooling efficiently This prevents overheating of the battery 7 and associated devices.

On the other hand, the temperature control door 26 is controlled in the direction of opening to the cold air outlet passage 20, and is controlled in proportion to the temperature rise of the battery 7. Therefore, as the temperature of the battery 7 increases, the opening amount of the cold air drawing passage 20 increases. As a result, a large amount of cold air is supplied to the battery 7 and related devices, thereby efficiently cooling it.

As a result of the determination, if it is not larger than the "reference temperature" (S107-1), it is again determined whether the temperature of the battery 7 is smaller than the "reference temperature" (S111).

As a result of determination, if it is smaller than the reference temperature, it is determined that the battery 7 and related devices may be degraded, and the temperature control door 26 is controlled in the direction of opening the warm-out draw passage 22, The battery blower 28a is turned on (S113).

Then, the warmth that has passed through the heater core 16 is drawn out to the battery duct 28 and supplied to the battery case 1, and the supplied warmth is installed in the battery case 1 and the battery 7 and the related device. Heat them efficiently. This allows the battery 7 and associated devices to maintain optimum performance.

On the other hand, the temperature control door 26 is controlled in the direction of opening to the warmth withdrawal passage 22, and is controlled in inverse proportion to the temperature drop of the battery 7. Therefore, as the temperature of the battery 7 decreases, the amount of opening of the warmth draw passage 22 increases. As a result, a large amount of warmth is efficiently supplied to the battery 7 and related devices.

According to the present invention having such a configuration, since the structure of cooling the battery 7 and the related devices by using the cold air of the air conditioning apparatus 10, it is possible to efficiently cool the battery 7 and the related devices.

In addition, while using the cold air of the air conditioning apparatus 10, and having a different supply path from the cold supplied to the vehicle interior, it is possible to efficiently cool the battery 7 and the related devices regardless of the temperature in the vehicle interior.

In addition, since the battery and the related devices can be cooled regardless of the temperature in the vehicle interior, the battery 7 and the related devices can be efficiently cooled without affecting the comfort in the vehicle interior.

In addition, the present invention, because the structure that can heat the battery 7 and the related devices using the warmth of the air conditioning apparatus 10, in the winter low temperature, the battery 7 and the related devices to quickly increase to the activation temperature Can be. Thus, the battery 7 and related devices can be optimized for a short time.

In addition, according to the temperature of the battery 7, it is possible to differentially adjust the temperature and air flow rate of the cold or warm air supplied to the battery 7 and the related devices, cooling the battery 7 and the related devices efficiently Or heating. Thus, the performance of the battery 7 and associated devices can always be kept optimal.

Next, FIGS. 8 and 9 are views showing another embodiment of the hybrid vehicle air conditioner according to the present invention.

Another embodiment relates to a dual type air conditioner that independently cools and heats left and right portions of a vehicle interior, wherein the cold and warm air drawing passages 20 and 22 for extracting cold and warm air are provided. It has a structure formed separately in the middle portion of the air conditioning case (12).

In detail, the first separation plate 17 and the second separation plate 18 are installed inside the air conditioning case 12, and the inside of the air conditioning case 12 is disposed in the left passage portion 19a and the intermediate passage portion ( 19b) and the right passage part 19c.

Then, the cold and warm air of the left passage 19a is supplied to the left portion of the vehicle compartment, and the cold and warm air of the right passage 19c is supplied to the right portion of the vehicle compartment. Then, the cold air draw passage 20 and the warm air draw passage 22 are formed in the remaining intermediate passage portion 19b.

The cold and warm air outlet passages 20 and 22 formed as described above draw out the cold air that has passed through the evaporator 14 and the warm air that has passed through the heater core 16 to the outside of the air conditioning case 12, and draw out the cold and warm air. Supply to the battery case 1 side.

On the other hand, the temperature control door 26 is installed at the connection point between the cold air draw passage 20 and the warm air draw passage 22, and the amount of cold and warm air supplied to the battery case 1 through the temperature control door 26. To control.

In the dual type air conditioner configured as described above, since the cold and hot air drawing passages 20 and 22 can be formed through the first separating plate 17 and the second separating plate 18, the structure is very simple. Therefore, it is possible to supply cold and warm air to the battery case 1 side without consuming much cost. Therefore, the cost reduction effect can be expected.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope of the claims.

1: Battery Case 3: Introduction Tube
5: outlet line 7: battery
8: Motor Controller 9: DC / DC Converter
10: air conditioning device 12: air conditioning case
14: Evaporator 16: Heater Core
17: first separator plate 18: second separator plate
19a: left passage portion 19b: intermediate passage portion
19c: right passage 20: cold air passage
22: Warming-out passage 24: Connecting passage
26: temperature control door 28: battery duct (Battery Duct)
28a: blower for battery 30: control means
32: temperature sensor 34: control unit

Claims (9)

A battery device (B) for supplying electricity to the electric motor, and the air conditioning device 10 for cooling and heating in the vehicle cabin, the air conditioning device 10 is an air conditioning case 12, and the air conditioning case 12 In the air conditioner of a hybrid vehicle comprising an evaporator 14 and a heater core 16 installed in the),
And a supply means for extracting air from the air conditioning apparatus (10) and supplying the air to the battery apparatus (B) so as to cool or heat the battery apparatus (B). The method of claim 1,
The supply means,
A cold air drawing passage 20 capable of drawing cold air that has passed through the evaporator 14;
A warmth draw passage 22 capable of drawing out the warmth that has passed through the heater core 16;
A battery duct 28 for pumping air drawn into the cold air outlet passage 20 and the warm air outlet passage 22 toward the battery device B;
And an air conditioner for adjusting the temperature of the air blown toward the battery device (B). The method of claim 2,
The temperature control means,
A temperature control door 26 for adjusting an opening amount of the cold air draw passage 20 and the warm air draw passage 22 while rotating between the cold air draw passage 20 and the warm air draw passage 22;
And a control means (30) for controlling the opening position of the temperature regulating door (26) with respect to the cold and hot air drawing passages (20, 22) according to the temperature of the battery device (B) side. Vehicle air conditioning system. The method of claim 3,
The control means 30,
A temperature sensor 32 for sensing a temperature of the battery device B side;
When the temperature of the battery device B input from the temperature sensor 32 is greater than the reference temperature, the temperature control door 26 is controlled in a direction of opening the cold air discharge passage 20, and the temperature is higher than the reference temperature. And a control unit (34) for controlling the temperature control door (26) in a direction of opening the warmth withdrawal passage (22). The method of claim 4, wherein
The control unit 34,
Variably controlling the temperature control door 26 so that the opening degree of the cold air drawing passage 20 is gradually increased in proportion to the temperature increase when the temperature at the battery device B side increases and becomes larger than a reference temperature;
When the temperature at the side of the battery device B decreases and becomes smaller than the reference temperature, it is possible to variably control the temperature control door 26 so that the opening degree of the warmth withdrawal passage 22 increases gradually in inverse proportion to the temperature drop. An air conditioning apparatus for a hybrid vehicle, characterized in that. The method according to any one of claims 2 to 5,
And a battery blower (28a) installed on the battery duct (28) to further increase the air volume of the cold and warm air blown to the battery device (B) side. The method of claim 6,
The control unit 34,
If the temperature of the battery device B input from the temperature sensor 32 is a reference temperature, the battery blower 28a is turned off. If the temperature is larger or smaller than the reference temperature, the battery blower 28a is turned off. An air conditioning apparatus for a hybrid vehicle, characterized in that the blower (28a) is turned on. The method of claim 7, wherein
The control unit 34,
When the temperature of the battery device (B) rises and becomes larger than the reference temperature, the variable control to increase the rotational speed of the battery blower (28a) in proportion to the temperature rise,
When the temperature on the battery device (B) side is lower than the reference temperature when the temperature decreases inversely proportional to the temperature decrease variable control to increase the rotational speed of the battery blower (28a), characterized in that . The method according to any one of claims 2 to 5,
The first separator 17 and the second separator 18 further partition the interior of the air conditioning case 12 into a left passage portion 19a, an intermediate passage portion 19b, and a right passage portion 19c. To;
The left passage portion 19a supplies cold and warm air passing through the evaporator 14 and the heater core 16 to the left portion of the vehicle interior;
The right passage 19c supplies cold and warm air that has passed through the evaporator 14 and the heater core 16 to the right side of the vehicle interior;
The intermediate passage portion 19b is a hybrid, characterized in that for supplying the cold and warm air passing through the evaporator 14 and the heater core 16 to the cold air outlet passage 20 and the warm air outlet passage 22, respectively. Vehicle air conditioning system.

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