KR100726735B1 - System of operating air conditioner for vehicles by pcb winding type charger - Google Patents

Abstract

A system for operating a vehicle air conditioner by using a PCB(Printed Circuit Board) winding type charger is provided to utilize power charged by the PCB winding type charger for the vehicle air conditioner and mount an incar sensor, thereby preventing decrease of vehicle output by discharging caused by battery use during the vehicle is stopped running or use of alternator during the running of the vehicle. A system for operating a vehicle air conditioner by using a PCB winding type charger includes the PCB winding type charger(100) for charging an auxiliary battery by supplying an AC voltage generated from a generator to a charging circuit by using a PCB transformer as an energy transmission element. An incar sensor(200) is provided in a vehicle room for sensing a room temperature. The vehicle air conditioner is driven by a voltage charged by the auxiliary battery when the sensed room temperature is higher than a set reference temperature.

Description

System of Operating Air Conditioner for Vehicles by PCB Winding Type Charger}

1 is a configuration diagram of a conventional vehicle air conditioner operating system,

2 is a configuration diagram of a vehicle air conditioner operating system according to the present invention;

3 is a circuit diagram of a PCB winding type charger shown in FIG.

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

1: evaporator 3: compressor

5: condenser 7: expansion valve

15: blower assembly 17: air conditioner control panel

100: PCB winding type charger 110: PCB transformer

120: charger body 130: rechargeable battery pack

140: charger 150: auxiliary battery

200: temperature sensor

The present invention relates to a vehicle air conditioner operating system using a PCB winding type charger, and more particularly, to operate the air conditioner operating system with a power source charged using a non-discharge charging circuit, and to use an alternator during driving and driving while stopping the battery. The present invention relates to a vehicle air conditioner operating system that can prevent a decrease in output of the vehicle.

The vehicle air conditioner serves to lower the temperature of the room by supplying coolly cooled air to the room by using a phenomenon of absorbing ambient heat when the liquid evaporates.

The overall configuration of such an air conditioner operating system will be described with reference to FIG. 1.

As shown in FIG. 1, a conventional air conditioner for a vehicle includes an evaporator 1 for outputting low-temperature dry air by absorbing heat of high-temperature and humid air while a liquid refrigerant passes therethrough, and a gas passing through the evaporator 1. A compressor 3 for compressing the refrigerant in a state, a condenser 5 for releasing heat to the outside of the vehicle to liquefy by passing a high pressure gas state refrigerant formed in the compressor 3, and a high pressure liquid phase from the condenser 5 It is composed of an expansion valve (7) for receiving a refrigerant of the expansion and expand it into a refrigerant of low temperature, low pressure fog state.

And a receiver drier 10 for drying the refrigerant passing through the liquid pipe 8 to improve the heat exchange efficiency of the evaporator 5 is configured.

The vehicle's battery or alternator 19 is used as a power source for the vehicle air conditioner, and the air conditioner operating unit 17 is provided in the vehicle room. When the air conditioner operating unit 17 is operated, the vehicle air conditioner having the above configuration cools and cools the surrounding air. The supplied air into the cabin.

That is, the compressor 3 compresses the refrigerant into a gaseous state of high temperature and high pressure, presses it into the condenser 5 through the high pressure hose 4, and the refrigerant in the condenser 5 is forced by the cooling fan 9 or the like. It cools and releases heat and changes into a liquid state of low temperature and high pressure, and is injected into the evaporator 1 by the expansion valve 7 in the middle of the liquid pipe through the liquid pipe 8.

The evaporator 1 absorbs heat and evaporates to form a gas at low temperature and low pressure, and is then returned to the compressor 3 through the low pressure hose 2.

Therefore, the refrigerant absorbs external heat while vaporizing in the evaporator 1, whereby the air supplied from the blower assembly 15 including the fan 11 and the fan motor 13 passes through the evaporator. Moisture contained in is condensed on the surface of the evaporator 1, the heat is deprived of heat is supplied to the interior of the car with cool air to achieve cooling.

The air conditioner operating system is controlled by a Full Automatic Temperature Controller (FATC), and may directly cause a problem of discharge or vehicle output deterioration since the power is directly used by the battery or the alternator 19.

That is, the conventional vehicle air conditioner operates by using battery power while the vehicle is stopped and power supply of the alternator while driving.

Therefore, if the air conditioner is operated for a long time while the keyset is in the IGN position while the vehicle is stopped, there is a risk of discharging the battery. If the air conditioner is operated while the vehicle is running, the load on the vehicle increases by 7% or more, leading to a decrease in vehicle output and fuel economy.

The present invention has been made to solve the above-mentioned problems, using the power obtained by charging using a PCB winding-type charger as a power source of the vehicle air conditioning operating system and equipped with an air temperature sensor that senses the air temperature during use of the battery It is an object of the present invention to provide a vehicle air conditioner operating system using a PCB winding type charger that can prevent the output of the vehicle due to the use of the alternator during the discharge and driving.

A vehicle air conditioner operating system using a PCB winding-type charger according to the present invention for achieving the above object is an evaporator for outputting low-temperature dry air by absorbing heat of high-temperature and humid air while the refrigerant in the liquid state passes, the evaporator A compressor for compressing the gaseous refrigerant that has passed, a condenser for dissipating heat to the outside of the vehicle by liquefying the high-pressure gaseous refrigerant formed in the compressor, and a high pressure liquid refrigerant supplied from the condenser, In a vehicular air conditioner operating system comprising an expansion valve for expanding with a refrigerant in a fog state and an air conditioner operating portion provided in a vehicle cabin,

The PCB winding type charger which charges the auxiliary battery by supplying the AC voltage generated from the generator of the vehicle to the charging circuit using the PCB transformer which is a contactless energy transfer device, and is provided in the cabin to sense the temperature inside the vehicle. A temperature sensor is provided, and the air conditioner for the vehicle is operated using the charged voltage of the auxiliary battery when the air temperature sensed by the air temperature sensor is higher than a preset reference temperature after the air conditioner manipulation unit is operated.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

2 is a configuration diagram of a vehicle air conditioner operating system according to the present invention.

Components such as the prior art are referred to as symbols used in the description of the prior art.

As shown in FIG. 2, the evaporator 1 outputs low-temperature dry air by absorbing heat of hot and humid air while the liquid refrigerant passes therein, and compresses the gaseous refrigerant passing through the evaporator 1. A compressor (3), a condenser (5) for dissipating heat to the outside of the vehicle to liquefy by passing the high pressure gas refrigerant formed in the compressor (3), and a high pressure liquid refrigerant supplied from the condenser (5). It comprises an expansion valve (7) for expanding it with a low-temperature, low-pressure fog state refrigerant, and the air conditioner operating unit (17) provided in the cabin.

The present invention is a PCB winding type charger 100 to obtain a power used as a power source of the vehicle air conditioner by contactless charging in the above configuration, and an internal temperature sensor (Incar Sensor) provided in the interior of the vehicle to sense the temperature inside the vehicle It is configured to further include (200).

The FATC operates the vehicle air conditioner when the air conditioner manipulation unit 17 is operated and the inside temperature is sensed using the air temperature sensor 200 to reach a temperature specified by the driver.

In this case, the power source used is a PCB winding type charger 100 instead of a battery or an alternator, and the PCB winding type charger 100 charges the auxiliary battery 150 without contact in a normal driving state, thereby increasing the load of the vehicle. Don't let that happen.

The charging of the PCB winding type charger 100 allows the AC voltage generated from the generator to be charged in the charging circuit by using a contactless energy transfer element as the vehicle is driven. As shown in FIG. The PCB transformer 110 is used as a transfer element, and the primary side 112 winding and the secondary side 114 winding are formed on the single-sided PCB, respectively, to transfer energy without electrical contact with a predetermined gap.

Since the PCB transformer 110 does not use a magnetic core in the energy transfer device, the entire charger may be designed and manufactured in a thin form.

The PCB winding type charger 100 converts commercial AC power into a high frequency square wave, and is then applied to the charger main body 120 for supplying the built-in PCB transformer primary side 112 and the PCB transformer primary side 112. It consists of a charger 140 for converting the electromotive force induced in the winding of the PCB transformer secondary side 114 embedded by the magnetic field generated by the square wave into a direct current and applied to the embedded charging circuit 144.

The PCB transformer secondary side 114 is mounted on the surface of the rechargeable battery pack 130, and a circuit related to the charger 140 is installed inside the rechargeable battery pack 130.

The charger main body 120 includes a low frequency rectifier circuit 122 for rectifying and converting a commercial AC power into a DC, and a high frequency half bridge converting the DC voltage into a high frequency square wave and applying the same to the PCB transformer primary side 112. bridge) is composed of a series resonant inverter (124), and the PCB transformer primary side (112).

The low frequency rectifying circuit 122 rectifies the AC voltage obtained from the generator of the vehicle and inputs the same to the high frequency half-bridge series resonant inverter 124.

The high frequency half-bridge series resonant inverter 124 applies a square wave current and voltage waveform by using a series resonance between the leakage inductance of the PCB transformer 110 and the resonant capacitor C2.

The high frequency half bridge series resonant inverter 124 includes capacitors C3 and C4 for dividing an input voltage, MOSFETs Q1 and Q2 connected to rear ends of the capacitors C3 and C4 and alternately turned on and off. A capacitor C1 connected to a common rear end of the MOSFETs Q1 and Q2 to block a DC component, and an output of the capacitors C1 and C2 and C3 to the MOSFETs Q1 and Q2. And a step-down transformer 126 for stepping down the resulting square wave voltage.

Since the charger main body 120 does not use a magnetic core, the PCB transformer 110 has a very small magnetization inductance, so that excessive circulating current flows into the circuit of the PCB transformer primary side 112, thereby causing a large conduction loss.

The step-down transformer 126 is mounted in front of the PCB transformer primary side 114 to reduce this circulating current.

The charger 140 includes a PCB transformer secondary side 114, a high frequency rectifying circuit 142 connected thereto, a charging circuit 144 for converting an input voltage into a low voltage and then applying the auxiliary voltage to the auxiliary battery 150. The control circuit 146 detects the voltage and current of the auxiliary battery 150 and generates an appropriate control signal based on the detected signal and supplies the control circuit 144 to the charging circuit 144. ) Is mounted inside.

The energy transfer to the PCB winding type charger 100 configured as described above is performed by the low frequency rectifying circuit 122 and the high frequency half bridge series resonant inverter 124 of the charger body, and the charging circuit mounted in the rechargeable battery pack 130 ( Enter the appropriate voltage in 144).

The low frequency rectifier circuit 122 receives the AC power and rectifies the AC power, and supplies an input to the high frequency half-bridge series resonant inverter 124. The AC input voltage is supplied to the DC voltage through the low frequency rectifier circuit 122. When the two MOSFETs Q1 and Q2 are alternately turned on with dead time by the gate signal, the rectified DC voltage is changed into a square wave voltage.

The square wave voltage again becomes the input voltage of the PCB transformer 110 via the step-down transformer 126.

The input voltage exhibits low impedance to the fundamental wave component of the square wave and relatively high impedance to the high frequency of the square wave by the resonance circuit composed of the inductance of the PCB transformer 110 and the resonant capacitor C2.

Accordingly, the current of the PCB transformer primary side 112 transmits a sine wave current having a fundamental frequency of a square wave to the PCB transformer secondary side 114, and the high frequency rectifying circuit 142 and the filter capacitor of the PCB transformer secondary side 62. It becomes DC voltage through (C5).

This DC voltage is again input to the charging circuit 144.

Here, the control circuit 146 senses the voltage and current of the auxiliary battery, generates an appropriate control signal based on the detected signal, and supplies it to the charging circuit 144, and charge / discharge of the auxiliary battery 150. Understand the condition.

The air conditioner operating system can be used as an auxiliary air conditioner that is automatically turned on and off because the power supply capacity can be charged without affecting the load during charging. As a result, battery discharge can be prevented.

The present invention can be used to charge the auxiliary battery using a non-contact charging circuit and to operate the air conditioner with the power of the auxiliary battery to prevent the discharge caused by the use of the battery while stopped, the vehicle output degradation due to the use of the alternator while driving.

In addition, since the charging circuit can be configured using the PCB windings, the charger and the rechargeable battery can be manufactured in a thin shape without significantly affecting the thickness, and the space occupied by the layout of the vehicle can be minimized. It is advantageous.

Claims (6)

An evaporator for outputting low-temperature dry air by absorbing heat of high temperature and humid air while passing through a liquid refrigerant, a compressor for compressing a gaseous refrigerant passing through the evaporator, and a high-pressure gaseous refrigerant formed in the compressor Operation of a vehicle air conditioner comprising a condenser for dissipating heat to the outside of the vehicle to liquefy, an expansion valve for supplying a high-pressure liquid refrigerant from the condenser and expanding it into a refrigerant at low temperature and low pressure, and an air conditioner operation unit provided in the cabin. In the system, The PCB winding type charger 100 which charges the auxiliary battery 150 by supplying the AC voltage generated from the generator of the vehicle to the charging circuit 144 using the PCB transformer 110 which is a contactless energy transfer device, Is provided in the room is provided with a temperature-resistant sensor 200 for detecting the temperature inside the vehicle, After the air conditioner manipulation unit 17 is operated, when the air temperature sensed by the air temperature sensor 200 is higher than a preset reference temperature, the vehicle air conditioner is operated by using the charged voltage of the auxiliary battery 150. Automotive air conditioner operating system using a PCB winding type charger. The method of claim 1, The PCB winding type charger 100 converts an AC voltage into a high frequency square wave and then applies the charger main body 120 to the primary side 112 of the PCB transformer 110 and the primary transformer 112 to the PCB transformer. PCB winding, characterized in that consisting of a charger 140 for converting the electromotive force induced in the secondary side 114 of the PCB transformer 110 to a direct current by a magnetic field generated by the square wave applied to the charging circuit 144 Automotive air conditioning system using linear charger. The method of claim 2, The charger main body 120 includes a low frequency rectifying circuit 112 for rectifying the AC voltage and converting it into a DC, and a high frequency half bridge series resonant inverter for converting the DC voltage into a high frequency square wave and applying the same to the PCB transformer primary side 112. 114 and the PCB transformer primary side 112, characterized in that the vehicle air conditioner operating system using a PCB winding type charger. The method of claim 3, wherein The high frequency half-bridge series resonant inverter 114 is connected to the rear end of the capacitor (C3, C4) and the capacitor (C3, C4) for dividing the DC voltage input through the low-frequency rectifier circuit 112, alternately ON / MOSFET (Q1, Q2) to be turned off, a capacitor (C1) connected to the common rear end of the MOSFET (Q1, Q2) to cut off the DC component, and connected to the output side of the capacitor (C1) and capacitor (C2, C3) To a step-down transformer 126 for stepping down square wave voltages caused by the MOSFETs Q1 and Q2, and a resonant capacitor C2 connected between the output side of the step-down transformer 126 and the PCB transformer primary side 112. Vehicle air conditioning operating system using a PCB winding type charger, characterized in that the configuration. The method of claim 2, The charger 140 converts the voltage of the PCB transformer secondary side 114, the high frequency rectifier circuit 142 connected to the PCB transformer secondary side 114, and the high frequency rectifier circuit 142 into a low voltage and then assists the auxiliary voltage. A control circuit for sensing the voltage and current of the auxiliary battery 144 and the charging circuit 144 applied to the battery 150 and generating an appropriate control signal based on the detected signal and supplying it to the charging circuit 144. Vehicle air conditioner operating system using a PCB winding type charger, characterized in that consisting of (146). The method of claim 5, The charger 140 circuit and the auxiliary battery 150 are mounted inside the rechargeable battery pack 130, and the rechargeable battery pack 130 has a gap spaced apart from the charger main body 120 by a predetermined distance. Automotive air conditioning system using a charger.

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