KR100569334B1 - Air conditioner compressor driving apparatus using IGS in vehicle having two electrical voltage supply system and method for controlling the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner compressor driving apparatus using an integrated generator starter (IGS) in a dual power system vehicle and a method of controlling the same, wherein the compressor is driven by the rotational force of the engine during driving and stops during driving, that is, the idle stop. In the case of (idle stop), it is configured to drive the compressor with the rotational force of IGS driven as a motor by receiving power from the 36V battery by MCU control, so that the compressor is exclusively installed for driving the air conditioner compressor at the idle stop. The present invention relates to an air conditioner compressor driving apparatus using an IGS and a method of controlling the same.

Dual Power System, Vehicle, IGS, Air Conditioner, Compressor, Drive

Description

Air conditioner compressor driving apparatus using IGS in vehicle having two electrical voltage supply system and method for controlling the same}             

Figure 1a and 1b is a schematic view showing the configuration and operation of the air conditioner compressor driving apparatus using a transmission-integrated IGS according to the present invention,

2 is a flowchart for explaining a control method of a compressor driving apparatus according to the present invention;

3A and 3B are schematic views showing a conventional air conditioner compressor driving device in a dual power system vehicle to which an IGS transmission is applied.

<Explanation of symbols for the main parts of the drawings>

110: engine 112: crankshaft

114: drive pulley 120: transmission

130: IGS 131: rotation axis

140: compressor 151: first driven pulley

152: internal power transmission means 154: drive shaft

155a: Drive shaft driven pulley 155b: Drive shaft drive pulley

156: belt 157: second driven pulley

158: clutch plate 160: MCU

170: 36V battery

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner compressor driving apparatus using an integrated generator starter (IGS) in a dual power system vehicle and a method of controlling the same, wherein the compressor is driven by the rotational force of the engine during driving and stops during driving, that is, the idle stop. In the case of (idle stop), it is configured to drive the compressor with the rotational force of IGS driven as a motor by receiving power from the 36V battery by MCU control, so that the compressor is exclusively installed for driving the air conditioner compressor at the idle stop. The present invention relates to an air conditioner compressor driving apparatus using an IGS and a method of controlling the same.

The electric device of the car can be compared to the nervous system of a person, and the electric device can be exerted in its excellent performance only when the electric device is normally operated.

Engine electric devices (starters, ignition devices, charging devices) and lighting devices are generally used as electric devices in automobiles. However, as the vehicle becomes more electronically controlled, most systems including chassis electric devices are becoming electronic. to be.

On the other hand, various electric appliances such as lamps, audio, heaters, air conditioners, etc. installed in a vehicle are supplied with power from a battery when the vehicle is stopped and from a generator when the vehicle is stopped. Power generation capacity is being used.

However, in recent years, with the development of the information technology industry, various new technologies (motor-powered steering, the Internet, etc.) for the purpose of increasing the convenience of automobiles have been applied to vehicles, and in the future, development of new technologies that can make the most of the current automobile system has been developed. It is expected to continue.

Therefore, the existing 14V power supply system is unable to supply enough power to the vehicle to which the new technology is applied, and therefore, it is required to introduce a power supply system capable of supplying more power. System.

In other words, the power supply system of automobiles is doubled to 14V / 42V, and the power efficiency is increased by supplying the voltage of 42V to the clocks and motors requiring high power, and the low-power devices use the existing 14V power system. .

It is well known that the dual power supply system of an automobile has a starter function, an integrated generator starter (IGS) which generates high power, and a motor control unit (MCU) that controls the generation amount and the starter function of the IGS, 42V. 36V battery for storing the power generated from the IGS power generation system, a battery management system (BMS) for controlling and managing the 36V battery, various high-power devices equipped with a 42V motor driven by the 36V battery, direct voltage from the 36V battery Bi-directional DC / DC converter for converting to / direct current, a 12V battery for charging the voltage converted from the DC / DC converter, a low power device driven by the 12V battery voltage, and the like.

Among the various components of this dual power system, IGS replaces the existing alternator and starter, which is installed between the engine and the transmission (transmission integrated IGS), which is a motor, 36V under the control of a motor control unit (MCU) at initial start-up. It operates as a starter by receiving 42V power supplied from the battery, and operates as an alternator during normal operation of the engine.

The 42V power generated by the IGS is stored in a 36V battery, and the power of the 36V battery is controlled by a MCU control such as a water pump, an electric air conditioner compressor, a fuel pump, a radiator fan, a wiper, a condenser fan, a power window, and the like. Drive high power devices.

In addition, the IGS performs both a starter function and an alternator function, and internally includes an electromagnet, a coil, a rotation shaft, and the like, and in particular, the rotation shaft transmits the rotational force to the engine crank shaft by a separate intermittent mechanism. It can be interrupted, and the rotational force transmission can be interrupted by an interruption mechanism which is also separate from the input shaft of the transmission.

On the other hand, in a dual power system vehicle in which a transmission-integrated IGS is applied, when the vehicle stops during driving, i.e., when idle stops, the engine, as well as the IGS and the transmission transmitted to the engine, are stopped. Air conditioners that are only driven by rotational force are also stopped.

Therefore, in order to maintain the operating state of the air conditioner at the idle stop (idle stop), it is necessary to install a 42V type motor that operates by a power source of a 36V battery to drive the compressor separately.

Hereinafter, a conventional apparatus and method for driving a compressor in a dual power system vehicle to which an IGS transmission is applied will be described.

3A and 3B schematically illustrate a conventional air conditioner compressor driving device in a dual power system vehicle to which an IGS is applied. In the vehicle of FIG. 3A, a separate driving motor 52 for driving the compressor 40a is provided. The motor integrated compressor 40b is employed in the vehicle of FIG. 3B.

3A and 3B, reference numeral 10 denotes an engine, reference numeral 20 denotes a transmission, and reference numeral 30 denotes a transmission-integrated IGS provided between the engine 10 and the transmission 20.

Basically, in a dual power system vehicle equipped with a transmission-integrated IGS, the compressor is driven by the rotational force of the engine while driving, and the compressor is driven by the rotational force of the motor when the vehicle stops during driving, that is, during an idle stop. .

First, referring to FIG. 3A, a belt (crank shaft pulley installed on the crank shaft 12 of the engine 10, that is, between the first driving pulley 14 and the first driven pulley 51 of the compressor 40a) 15 is connected to enable the compressor 40a to be driven by the power of the engine 10.

In addition, a compressor driving motor 52 which is driven by receiving 42V power from the 36V battery 70 is separately installed, and the second driving pulley 53 installed on the rotation shaft of the motor 52 is configured to provide the compressor 40a. The belt 54 is connected between the second driven pulleys 55 to drive the compressor 40a by the power of the motor 52.

Here, the role of allowing the power of the engine 10 side and the power of the motor 52 side to be transmitted to the first driven pulley 51 and the second driven pulley 55 of the compressor 40a is assumed to be a normal magnetic clutch part. do.
The magnetic clutch part includes a first driven pulley 51 and a second driven pulley 55 installed on the compressor shaft 41 and a clutch plate 56 positioned therebetween. As the pulley is electromagnetized, the clutch plate, which is spaced apart, is in close contact with the pulley and is rotated together.
Accordingly, the clutch plate 56 connected to the compressor shaft 41 has a first driven pulley 51 that receives the rotational force of the engine 10 and a second driven pulley 55 that receives the rotational force of the motor 52. The rotational force transmission between the compressor shaft 41 and the driven pulleys (51, 55) is intermittently interposed between the first and second driven pulleys (51) and the second driven pulley (55). You will be delivered.

That is, when the dual power system vehicle is driving, the compressor 40a is driven by receiving the rotational force of the engine 10. When the air conditioner is turned on during driving, the first driven pulley in which the clutch plate 56 of the compressor 40a is idling is idle. And a rotational force of the engine crankshaft 12 is transferred from the first drive pulley 14 to the belt 15 to the first driven pulley 51 to the clutch plate 56 to the compressor shaft 41. The compressor 40a is driven while being transmitted.

Thereafter, when the dual power system vehicle stops during driving, that is, when it is idle stop, the compressor 40a receives the rotational force of the motor 52 to maintain the driving state. At idle stop, the clutch plate 56 of the compressor 40a is connected to the second driven pulley 55, and at this time, the motor 52 supplied with the 42V power under the control of the MCU 60 is driven so that the rotational force of the rotating shaft is reduced. The compressor 40a is driven while being transmitted to the second drive pulley 53 → belt 54 → second driven pulley 55 → clutch plate 56 → compressor shaft 41.

Next, referring to FIG. 3B, a compressor 40b integrated with a motor (not indicated by a separate reference numeral) driven by a 42V power source from a 36V battery 70 is installed.

In addition, the first drive pulley 14 provided on the crank shaft 12 of the engine 10 is connected to the first driven pulley of the compressor 40b by a belt 15.

The compressor 40b is basically driven by receiving the rotational force of the engine 10, and the clutch plate 56 provided on the compressor shaft 41 transmits the rotational force between the compressor shaft 41 and the first driven pulley 51. It will be intermittent, the rotary shaft (not shown) of the integrated motor is connected to the compressor shaft 41 through a separate connection structure.

In this case, when the motor-integrated compressor 40b is employed, as in the case of FIG. 3A described above, the compressor 40b is driven by the rotational force of the engine 10 when driving, and is stopped during driving, that is, the idle stop. At the idle stop, it is driven by the rotational force of the integrated motor.

That is, when the air conditioner is turned on while the dual power system vehicle is driven, the clutch plate 56 of the compressor 40b is connected to the first driven pulley 51 that is idling by receiving the rotational force of the engine 10, wherein the engine crankshaft The rotational force of (12) is transmitted to the crankshaft pulley 14 → belt 15 → first driven pulley 51 → clutch plate 56 → compressor shaft 41, thereby driving the compressor 40b.

Subsequently, when the dual power system vehicle is stopped between driving in the air conditioner on state, that is, when the vehicle is idle stop, the integrated motor supplied with 42V power by the MCU 60 control is driven to The rotational force causes the compressor shaft to rotate, thereby maintaining the driving state of the compressor 40b.

However, in a dual power system vehicle in which a transmission-integrated IGS is applied, installation of a motor for maintaining the driving of the compressor at idle stop causes the following problem.

1) When a separate compressor driving motor is installed, there is a problem of limitation of mounting space and weight increase in the engine room, and a cost increases due to the addition of expensive motor.

2) In the motor-integrated compressor, in addition to the motor, a separate mechanism that allows the compressor shaft to be rotated by the motor drive must be added in the compressor, thereby increasing the size of the compressor, resulting in problems of space limitation, cost, and weight.

Accordingly, the present invention has been invented to solve the above problems, and when driving, the compressor is driven by the rotational force of the engine, and when the driving stops, that is, when the idle stop (idle stop) power from the 36V battery Is configured to drive the compressor with the rotational force of the transmission-integrated IGS driven as a motor, thereby eliminating the compressor-specific drive motor that was previously installed separately for driving the air conditioner compressor at idle stop. It is an object of the present invention to provide a compressor driving device and a control method thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides an air conditioner compressor driving apparatus of a dual power system vehicle in which a transmission-integrated IGS (130) is installed, which performs functions of a starter and an alternator under the control of the MCU 160.

The first driven pulley 151 and the second driven pulley 151 rotatable together with the compressor shaft 141 while being selectively connected / disconnected to the compressor shaft 141 of the air conditioner compressor 140 by the clutch plate 158 intermittent to the rotational force transmission. A driven pulley 157 is installed, and the first driven pulley 151 is connected to the drive pulley 114 installed on the crank shaft 112 of the engine 110 by a belt to transmit a rotational force, and the second The driven pulley 157 is characterized in that it is connected to the internal rotating shaft 131 of the transmission-integrated IGS 130 via a separate power transmission means so as to enable rotational force transmission.

In particular, the separate power transmission means is connected to the internal power transmission means 152 installed inside the IGS 130 and the internal power transmission means 152 to transmit the rotational force of the IGS rotation shaft 131 to the outside. It is characterized in that the rotational force is transmitted and one end of the drive pulley 155b is made of a drive shaft 154 connected to the belt to allow the rotational force transmission with the second driven pulley 157.

In addition, the inner power transmission means 152, a belt for connecting the pulley 153a provided on the IGS rotation shaft 131 and the driven pulley 155a at the other end of the pulley 153a and the drive shaft 154. It is characterized by consisting of (153b).

On the other hand, the present invention is a control method of a device for driving an air conditioner compressor using a transmission-integrated IGS installed between the engine and the transmission in a dual power system vehicle,

A first step of determining whether a current vehicle state is at an idle stop during an air conditioner on operation; A second step of connecting the clutch plate installed on the compressor shaft to a first driven pulley to receive engine rotational force when it is determined that the current vehicle state is not at idle stop; A third step of separating the rotational shaft of the transmission-integrated IGS from the engine crankshaft and the transmission input shaft when it is determined that the current vehicle state is at idle stop time; Applying a power of a 36V battery to the IGS after the third step to rotate the IGS rotating shaft; And driving the compressor by the IGS rotational force by connecting the clutch plate to the second driven pulley which receives the rotational force of the IGS rotational shaft through a power transmission means after the third step.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner compressor driving apparatus using a transmission-integrated IGS and a control method thereof in a dual power system vehicle, wherein the compressor is driven by the rotational force of the engine during driving, and stops during driving, i.e., during idle stop. The present invention relates to an air conditioner compressor driving device configured to drive a compressor with a rotational force of a transmission-integrated IGS driven as a motor by receiving power from a 36V battery by MCU control and a control method thereof.

1A and 1B are schematic views showing the configuration and operating state of an air conditioner compressor driving apparatus using an IGS integrated transmission according to the present invention. FIG. 1A is an operating state for driving a compressor during driving, and FIG. 1B is an idle stop. ) Shows the operation status for compressor operation.

First, the driving pulley (crankshaft pulley) 114 installed on the crankshaft 112 of the engine 10 transmits the first driven pulley 151 and the rotational force installed on the compressor shaft 141 of the compressor 140. It is connected to the first driven pulley 151 through the belt 115 to be made.

In addition, the air conditioner compressor driving apparatus according to the present invention uses the IGS 130 installed between the engine 110 and the transmission 120, instead of using a conventional motor for driving the compressor 140 at the idle stop (idle stop). I use it.

The transmission-integrated IGS 130 performs both the functions of a starter and an alternator, and includes a rotating shaft 131 and an electromagnet and a coil (not shown), and the rotating shaft 131 has a separate intermittent mechanism 132. By this, the rotational force transmission with the engine crankshaft 112 may be interrupted, and the rotational force transmission with the input shaft 121 of the transmission 120 may be interrupted by a separate control mechanism 133.

The basic configuration of such a transmission-integrated IGS is as described in the prior art, the function is also as described in the prior art.

In particular, in order to enable the transmission-integrated IGS 130 to drive the compressor 140, in the present invention, the transmission-integrated IGS 130 outputs the rotational force of the rotation shaft 131 installed inside the housing to the outside of the IGS. 130 has a separate internal power transmission means 152 for rotating the drive shaft 154 provided on the outside.

The internal power transmission means 152 connects the pulley 153a provided on the rotating shaft 131 inside the IGS 130 and the pulley 153a installed on one end of the drive shaft 154. It can be implemented with a belt (153b).

Of course, in order to allow the rotational force transmission from the rotational shaft 131 inside the IGS 130 to the external drive shaft 154, the internal connecting the rotational shaft 131 and the drive shaft 154 to enable the rotational force transmission Instead of the pulley 153a and the belt 153b structure as described above, the power transmission means 152 may also be configured with a plurality of gear combinations and separate shafts connected thereto.

In other words, as long as the structure can transmit the rotational force of the IGS inner rotation shaft 131 to the driven pulley 155a of the outer drive shaft 154 disposed in parallel with the IGS inner rotation shaft 131, any known power transmission mechanism may be used.

However, in order to prevent internal contamination of the IGS 130, it is preferable to configure the structure connected to the outside in the IGS internal rotation shaft 131 so as not to be exposed to the outside.

On the other hand, the drive shaft 154 is another power transmission means that is installed outside the transmission-integrated IGS (130), is arranged in parallel with the crank shaft 112 of the engine 110 and the rotation shaft 131 of the IGS (130), One end of the pulley 155a is connected to the power transmission means 152 installed inside the IGS 130, and the other end of the drive pulley 153b is a belt (so that the rotational force transmission can be made with the second driven pulley 157) 156).

In addition, the clutch plate 158 installed on the compressor shaft 141 has a first driven pulley 151 that receives the rotational force of the engine 110 and a second driven pulley 157 that receives the rotational force of the IGS 130. The rotational force transmission between the compressor shaft 141 and the driven pulleys 151 and 157 is intermittently interposed between the first and second driven pulleys 151 and 157 when the air conditioner is operated. .

That is, when the dual power system vehicle is driving, the compressor 140 is driven by receiving the rotational force of the engine 110. When the air conditioner is turned on during driving, the clutch driven plate 158 of the compressor 140 is idling the first driven pulley ( 151, wherein the rotational force of the engine crankshaft 112 is transmitted to the drive pulley 114 → belt 115 → first driven pulley 151 → clutch plate 158 → compressor shaft 141. 140 is driven.

Subsequently, when the dual power system vehicle stops while driving, that is, when it is idle stop, the compressor 140 receives the rotational force of the IGS 130 driven as a motor and maintains the driving state. The clutch plate 158 of 140 is connected to the second driven pulley 157, and the IGS 130 is driven as a motor by receiving 42V power from the 36V battery 170 under the control of the MCU 160. Rotation force of the rotary shaft 131 is the power transmission means 152 inside the IGS 130 → drive shaft driven pulley 155a → drive shaft 154 → drive shaft drive pulley 155b → belt 156 → second driven pulley 157 The clutch 140 is driven while being transferred to the clutch plate 158 and the compressor shaft 141.

Hereinafter, the operating state of the air conditioner compressor driving apparatus according to the present invention.

2 is a flowchart illustrating a control method of the compressor driving apparatus according to the present invention.

In describing the control method of the present invention, in order to clearly show the overall operating state of the transmission-integrated IGS employed in the compressor driving apparatus of the present invention, it will be described from the start of the dual power system vehicle.

The transmission-integrated IGS 130 serves as a starter and a generator under the control of the MCU 160 between the engine 110 and the transmission 120, which is the same as in the prior art.

First, when the driver turns on the start key to start the vehicle, the MCU 160 receives the start signal and determines that the start key is turned on.

When the MCU 160 determines the on operation of the ignition key, it controls the control mechanism 132 in the transmission-integrated IGS 130 to control the rotation shaft 131 of the IGS 130 to the crank shaft of the engine 110. And a 42V power supply of the 36V battery 170 to the IGS 130.

As a result, the transmission-integrated IGS 130 performs a function as a start motor. The rotational force of the rotating shaft 131 is provided to the crank shaft 112 of the engine 110 to start the engine.

Next, in order to drive the vehicle in the idle state of the engine 110, the MCU 160 controls another control mechanism 133 inside the IGS 130 to rotate the shaft 131 of the transmission-integrated IGS 130. To the input shaft 121 of the transmission 120.

Power generated by the rotation of the rotary shaft 131 of the transmission integrated IGS 130 due to the rotational force of the engine 110 when the vehicle is driven is stored in the 36V battery 170, in which the IGS 130 serves as a generator. do.

Afterwards, when the driver turns on the air conditioner, the MCU 160 determines that the current vehicle state is not the driving stop state, that is, the idle stop time, and sends a signal to the air conditioner control unit. The air conditioner control unit determines that the air conditioner is on, and connects the clutch plate 158 of the compressor 140 to the first driven pulley 151 belted to the drive pulley (crankshaft pulley) 114 of the engine crankshaft 112. As a result, the compressor 140 is driven by the rotational force of the engine 110.

Subsequently, in the dual power system vehicle to which the transmission-integrated IGS 130 is applied as described above, when the vehicle stops during driving, that is, at an idle stop, the engine 110 as well as the IGS that receives the rotational force of the engine 110 are transmitted. 130, the transmission 120 is all stopped, in the present invention, when the MCU 160 determines the idle stop time, the IGS 130 is controlled by controlling each of the control mechanisms 132 and 133 inside the IGS 130. The rotating shaft 131 is separated from the crank shaft 112 of the engine 110 and the input shaft 121 of the transmission 120.

This is to maintain the operating state of the air conditioner, after which the MCU 160 applies the 42V power of the 36V battery 170 to the transmission-integrated IGS (130), the power IGS (130) is applied to the starter function The rotation shaft 131 is rotated in the same manner as when performed.

That is, when the idle stop, the transmission-integrated IGS 130 serves as a motor in which the rotating shaft 131 is rotated. At this time, the MCU 160 outputs a signal indicating that the vehicle is in the idle stop state to the air conditioner control unit. The air conditioner controller receiving the input connects the clutch plate 158 of the compressor 140 to the second driven pulley 157 connected to the drive shaft driving pulley 155a and the belt.

As a result, the rotational force of the IGS rotary shaft 131 is the power transmission means 152 → drive shaft driven pulley 155a → drive shaft 154 → drive shaft drive pulley 155b → belt 156 → second driven inside the IGS 130. The compressor 140 is driven while being transmitted to the pulley 157 → clutch plate 158 → compressor shaft 141.

As such, the compressor 140 is driven by receiving the rotational force of the transmission-integrated IGS 130 in the idle stop state, and thus the operating state of the air conditioner can be maintained even in the idle stop state of the vehicle.

Thereafter, the IGS 130 performs a role as a starter under the control of the MCU 160 for driving again, and the compressor 140 is connected to the crank shaft 112 of the engine 110 again while driving. It is driven by the rotational force of, IGS 130 is to act as a generator again.

Of course, in order for the compressor 140 to be driven by the rotational force of the engine 110, the clutch plate 158 is belt driven with the driving pulley (crankshaft pulley) 114 of the engine crankshaft 112. This is done in the same manner as in the above-described air conditioning on operation.

In this way, according to the air conditioner compressor drive device and control method thereof of the present invention, the compressor is driven by the rotational force of the engine when the vehicle is driven, and the compressor is driven by the rotational force of the transmission-integrated type IGS that is driven as the motor during the idle stop. Bar, a compressor-only drive motor that is conventionally installed separately for driving the air conditioner compressor at the idle stop is no longer needed.

As described above, according to the air conditioner compressor driving apparatus using the transmission-integrated IGS in the dual power system vehicle according to the present invention and a control method thereof, the compressor is driven by the rotational force of the engine at the time of driving, and is stopped at the time of driving. The compressor is configured to drive the compressor with the rotational force of the IGS, which is driven as a motor by receiving power from a 36V battery under the control of the MCU, and is used exclusively for the compressor previously installed for driving the air conditioner compressor at the idle stop. As well as the drive motor, there is no need for a connection mechanism between the drive motor and the compressor shaft.

As a result, the limitation of mounting space and weight increase caused by the installation of the compressor-only driving motor can be solved, and the problem of cost increase due to the addition of expensive motors can be solved.

Claims (4)

In the air-conditioning compressor driving apparatus of a dual power system vehicle provided with a transmission-integrated IGS (130) that performs the functions of a starter and an alternator under the control of the MCU (160), The first driven pulley 151 and the second driven pulley 151 rotatable together with the compressor shaft 141 while being selectively connected / disconnected to the compressor shaft 141 of the air conditioner compressor 140 by the clutch plate 158 intermittent to the rotational force transmission. A driven pulley 157 is installed, and the first driven pulley 151 is connected to the drive pulley 114 installed on the crank shaft 112 of the engine 110 by a belt to transmit a rotational force, and the second The driven pulley 157 drives the air conditioner compressor using the IGS of the dual power system vehicle, which is connected to the internal rotating shaft 131 of the transmission-integrated IGS 130 via a separate power transmission means so as to transmit rotational force. Device. The method according to claim 1, The separate power transmission means, In order to transmit the rotational force of the IGS rotary shaft 131 to the outside, the internal power transmission means 152 installed inside the IGS 130 and the internal power transmission means 152 is connected to receive the rotational force and drive a set of The air conditioner compressor driving apparatus using the IGS of the dual power system vehicle, characterized in that the pulley (155b) is made of a drive shaft 154 connected to the second driven pulley (157) and a belt capable of transmitting rotational force. The method according to claim 2, The internal power transmission means 152, Dual power system vehicle comprising a pulley (153a) installed on the IGS rotation shaft 131, and a belt (153b) connecting the pulley (153a) and the driven pulley (155a) of the other end of the drive shaft (154). Air conditioner compressor drive using IGS. In the control method of the device for driving the air conditioner compressor using the IGS installed between the engine and the transmission in a dual power system vehicle, A first step of determining whether a current vehicle state is at an idle stop during an air conditioner on operation; A second step of connecting the clutch plate installed on the compressor shaft to a first driven pulley to receive engine rotational force when it is determined that the current vehicle state is not at idle stop; A third step of separating a rotation shaft of the IGS from an engine crank shaft and a transmission input shaft when it is determined that the current vehicle state is at idle stop time; Applying a power of a 36V battery to the IGS after the third step to rotate the IGS rotating shaft; Connecting the clutch plate to a second driven pulley that receives the rotational force of the IGS rotational shaft through a power transmission means after the third step to drive the compressor by IGS rotational force; Control method of the compressor drive apparatus using the IGS of a dual power system vehicle comprising a.

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