KR20110116587A - Power control apparatus of vehicle for transporting frozen, refrigerated and warmed foods and method thereof - Google Patents

Abstract

The present invention relates to a power control apparatus and method for a vehicle for food storage, wherein the main controller controls the temperature control unit and the fan motor drive unit to determine the charging power of the battery cell while controlling the temperature of the food storage room to a preset temperature. When the charging power of the battery cell is less than or equal to the predetermined minimum power, the power supply source supplies AC power under the control of the main controller, and the supplied AC power is converted into DC power by the DC power converter to be charged in the battery cell. When the determined charging power of the battery cell is greater than or equal to the preset maximum power, the power supply source does not supply AC power under the control of the main controller.

Description

Power control apparatus and vehicle for transporting frozen, refrigerated and warmed foods and method

The present invention relates to a power control apparatus and method for a vehicle for refrigeration, refrigeration and warm food transport. More specifically, the first battery unit is charged with power supplied from a power source, the temperature of the food storage room is controlled by the charging power of the first battery unit, and the second battery after voltage conversion of the charging power of the first battery. The present invention relates to a power control apparatus and method for a vehicle for refrigeration, refrigeration, and warm food transport, wherein the vehicle is charged to drive a vehicle engine.

A food transport vehicle that is generally used is used to transport and store frozen and refrigerated foods, and includes a freezing device, and controls the temperature by blowing cold air generated by the freezing device to an insulated food storage room.

The refrigerating device typically includes a compressor for compressing a refrigerant in a gas state, a condenser for condensing and liquefying a compressed high-pressure refrigerant gas, an expansion valve for expanding the condensed refrigerant to lower the temperature, and evaporating the expanded refrigerant by heat exchange. And an evaporator which generates cold air while being made.

The power required for such a refrigerating device is mainly classified into driving power of the compressor, power for driving the fan of the condenser and the evaporator, and the like. The driving power of the compressor occupies about 80% or more of the total power.

The power for driving the refrigerating device is a method of using the power of the engine installed in the vehicle, a method of using a separate sub-engine for driving the refrigeration device, and a method of using external power.

In the method of using the power of the engine of the vehicle, a compressor having an electronic clutch is connected to the engine room by a pulley and a belt, and a fan of the condenser and the evaporator uses a DC motor, and is output from the charging power of the battery or the alternator. Use power.

However, since the compressor is connected to the vehicle engine through the pulley and the belt, it is difficult to operate the refrigerating device when the vehicle is not running, and it is difficult to flexibly cope with the rotational speed of the compressor. There is a problem.

The method using the separate sub-engine uses a pulley and a belt in the sub-engine to connect both the compressor, the fan of the condenser and the evaporator. In some cases, the fans of the condenser and the evaporator may be driven using generating power.

Therefore, the method of using the sub-engine can maintain a constant rotation speed of the compressor, and there is an advantage that the capacity can be increased, but there are problems in coping with fluctuations in the refrigeration load and fuel consumption and noise.

In addition, the method of using the external electric power is to drive the refrigeration unit with an induction motor in order to be able to drive the refrigeration unit when the load or unloading load, using the method of using the power of the engine of the vehicle and the sub-engine In combination with the methods described above, various problems can be solved.

However, existing structures that obtain cooling power only differ in the direction of rotation and gearbox insertion depending on the direction of the fan, and almost similarly, there is no difference in the way of driving the engine and the compressor through the belt or the pulley.

In this case, since the load is connected to the engine, in particular, the load is excessively applied to the engine during the initial start-up, and the rotation speed according to the ratio of the pulley is also fixed, which is disadvantageous in the system control surface.

As a result, various control valves have recently been mounted and controlled, but still have limitations.

In addition, an alternator and a lead acid battery are required for a control power source and an engine start, and the power is inevitably reduced as power is transmitted through a pulley or a belt. On the other hand, since the engine output is the output of the AC power supply, problems of configuration, storage and efficiency in accordance with the conversion of the current method is also raised.

Therefore, an object of the present invention is to provide a power control apparatus and method for a vehicle for freezing, refrigeration, and warm food transport, which can control the temperature of the food storage room even when the vehicle is driven as well as when the vehicle is parked.

In addition, the present invention generates power by using an engine separate from the engine of the vehicle, charge the generated power in the battery unit, refrigeration, refrigeration and heated food transport vehicle for controlling the temperature of the food storage room by the charging power of the battery unit It provides a power control apparatus and method.

The present invention also provides a power control apparatus and method for a vehicle for refrigeration, refrigeration and warm food transport, which can easily adjust the driving speed of the compressor according to the temperature of the food storage room.

Problems to be solved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above may be clearly understood by those skilled in the art to which the present invention pertains. will be.

The electric power control device for a refrigerated, refrigerated and heated food transport vehicle of the present invention includes a power supply for supplying AC power, a DC power conversion unit for converting AC power supplied by the power supply into DC power, and the DC power conversion unit. A first battery unit which charges the converted DC power and supplies charging power as operating power, a temperature controller which generates cold air or heat with the DC power supplied by the DC power conversion unit or the first battery unit; A fan motor driving unit which drives the fan motor with DC power supplied by the DC power conversion unit or the first battery unit, and converts a voltage of DC power supplied by the DC power conversion unit or the first battery unit to convert the voltage into a second power supply; A second converter that charges a battery, and operates at an output power of the second converter or the second battery, and And a main controller controlling the temperature control unit and the fan motor driving unit to adjust the temperature of the food storage chamber and controlling the power supply to supply AC power according to the state of charge of the first battery unit. do.

The power supply source includes an engine and a generator for generating AC power according to the driving of the engine, and the main controller controls the generator to generate AC power by driving an AC power input from the outside or the engine. It features.

The first battery unit controls a battery cell charging DC power, and charges or discharges DC power in the battery cell, and communicates with the main controller to inform the main controller of the charging power of the battery cell. It is characterized by including a battery controller.

The battery cell is characterized in that a plurality of lithium polymer battery cells.

The temperature control unit is an inverter for switching the DC power supplied by the DC power conversion unit or the first battery unit to convert into AC power, a compressor driven by the inverter to convert the AC power to generate cold air; The inverter is characterized in that it is configured to include a heater that is driven in accordance with the converted AC power to generate heat.

The temperature control unit may further include a defroster driven according to the AC power converted by the inverter to remove frost of the evaporator.

The compressor is characterized in that the inverter scroll compressor.

The fan motor driver may include a first converter for converting a voltage of DC power supplied by the DC power converter or the first battery unit, and cold air generated by the temperature controller while being driven according to an output power of the first converter; And a fan motor for blowing hot air into the food storage compartment.

And the power control method of the vehicle for freezing, refrigeration and heated food transport of the present invention, the main controller controls the temperature control unit and the fan motor driving unit while controlling the temperature of the food storage room to a predetermined temperature, the main controller is a battery controller Determining the charging power of the battery cell by performing communication with the controller; and when the determined charging power of the battery cell is less than or equal to a predetermined minimum power, an AC power supplying and supplying AC power under the control of the main controller. Power is converted into DC power by a DC power converter to be charged in the battery cell; and when the determined charging power of the battery cell is equal to or greater than a preset maximum power, the power supply source controls the AC power according to the control of the main controller. Characterized in that it comprises a step of not supplying .

The AC power supply of the power supply source may include determining whether AC power is input from the outside, supplying AC power input externally when AC power is input from the outside, and determining the result. And when the AC power is not input from the outside, the engine is driven to generate the AC power, and the AC power is generated by the generator.

The power control apparatus and method for a vehicle for refrigeration, refrigeration, and warm food transport of the present invention generates power using an engine separate from the engine of the vehicle, charges the generated power to the battery unit, and supplies the power to the battery unit. Adjust the temperature of the food storage room.

Therefore, the temperature of the food compartment can be adjusted to the set temperature regardless of whether the vehicle is running or the vehicle is stopped.

In addition, since the frequency of the power supplied to the compressor can be adjusted using an inverter, the rotational speed of the compressor can be flexibly adjusted according to the temperature of the food storage room.

In addition, the present invention charges the power charged in the first battery unit to the second battery to supply the operating power to various electrical loads provided in the vehicle.

Therefore, it is not necessary to install a separate alternator for generating power to the engine of the vehicle, thereby reducing the fuel consumed when the vehicle is running.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, which do not limit the present invention, and like reference numerals designate like elements in some drawings.
1 is a view schematically showing the overall configuration according to the power control apparatus of the present invention, and
2 is a signal flow diagram showing the operation of the main controller according to the power control method of the present invention.

The following detailed description is only illustrative, and merely illustrates embodiments of the present invention. In addition, the principles and concepts of the present invention are provided for the purpose of explanation and most useful.

Accordingly, various forms that can be implemented by those of ordinary skill in the art, as well as not intended to provide a detailed structure beyond the basic understanding of the present invention through the drawings.

1 is a view schematically showing the overall configuration according to the power control device of the present invention. Here, reference numeral 100 denotes a power supply source. The power supply 100 may be supplied three-phase AC power from the outside. In addition, the power supply 100 includes an engine 102 and a generator 104, and the generator 104 generates three-phase AC power according to the driving of the engine 102.

Reference numeral 110 denotes a DC power converter. The DC power converter 110 includes a rectifier 112 and a capacitor 114. The rectifier 112 rectifies and converts three-phase AC power supplied from the outside or three-phase AC power generated by the generator 104 into a pulse current, and converts the converted pulse current into a smooth DC current. Convert to power.

Reference numeral 120 denotes a first battery unit. The first battery unit 120 includes a battery cell 122 and a battery controller 124. The battery cell 122 is, for example, a plurality of lithium polymer battery cells are connected in series. The battery controller 124 controls charging and discharging of DC power to the battery cell 122.

Reference numeral 130 is an inductor. The inductor 130 is provided between the DC power converter 110 and the first battery unit 120 to adjust the current of the DC power charged and discharged in the first battery unit 120.

Reference numeral 140 denotes a temperature controller for controlling the temperature of the food storage compartment. The temperature controller 140 includes an inverter 142, a compressor 144, a defroster 146, and a heater 148.

The inverter 142 converts the DC power supplied by the DC power converter 110 or the first battery unit 120 into AC power.

The compressor 144, for example, is an inverter scroll compressor, and the rotation speed is varied according to the frequency of the AC power output from the inverter 142, thereby compressing the refrigerant of the refrigerating device and causing cold air to be generated in the evaporator.

The defroster 146 generates heat according to the AC power output from the inverter 142 to remove frost of the evaporator.

The heater 148 generates heat in accordance with the AC power output from the inverter 142 to increase the temperature of the food storage room.

Reference numeral 150 is a fan motor driver. The fan motor driver 150 includes a first converter 152 and a fan motor 154.

The first converter 152 converts the voltage of the DC power supplied by the DC power converter 110 or the first battery unit 120. For example, the DC power voltage supplied by the DC power converter 110 or the first battery unit 120 is converted to 55V.

The fan motor 154 uses, for example, a BLDC (Brush Less Direct Current) motor, and the first converter 152 is driven in accordance with a DC power that converts a voltage to generate cold air or the heater. Heat generated by 148 is blown to the food storage chamber.

Reference numeral 160 is a second converter. The second converter 160 converts the voltage of the DC power supplied by the DC power converter 110 or the first battery unit 120. For example, the second converter 160 converts the voltage of the DC power supplied by the DC power converter 110 or the first battery unit 120 to 13.5V.

Reference numeral 170 is a second battery. The second battery 170 charges the DC power converted by the second converter 160, and supplies operating power to various electrical loads including an engine, an equalizer, and the like provided in the vehicle with the charging power.

Reference numeral 180 is a main controller. In addition, the main controller 180 communicates with the battery controller 124 of the first battery unit 120 to determine the charging power of the battery cell 122, and according to the determined charging power, the power supply source 100. Control the supply of three-phase AC power. In addition, the main controller 180 controls the temperature controller 140 and the fan motor driver 150 to control the temperature of the food storage room.

In the power control apparatus of the present invention having the above configuration, the DC power charged in the battery cell 122 of the first battery unit 120 is discharged under the control of the battery controller 124, and thus, the second power control device is connected to the second through the inductor 130. Supplied to converter 160.

Then, the second converter 160 converts the voltage of the DC power input from the battery cell 122. For example, the second converter 160 converts the voltage of DC power input from the battery cell 122 to 13.5V, and converts the DC power into the second battery 180 while charging the main battery 180. In addition to the various electrical loads provided in the vehicle is supplied as operating power.

The main controller 180 performs an initialization operation as shown in FIG. 2 at an initial time when operating power is supplied (S200). At this time, the main controller 180 performs all the components of the power control device while performing an initialization operation, that is, the power supply 100, the first battery unit 120, the temperature controller 140, and the fan motor driver 150. ) Is judged whether it is operating normally.

When the initialization operation is completed, the main controller 180 determines whether an error has occurred in the operation of the power control device (S202), and if an error occurs, an error is displayed on the display unit (not shown). The occurrence of is indicated to allow the user to take a predetermined action against the occurrence of the error (S204).

When the error does not occur, the main controller 180 controls the temperature controller 140 and the fan motor driver 150 to adjust the temperature of the food storage room (S206).

That is, the main controller 180 controls the inverter 142 of the temperature controller 140 to convert the DC power supplied by the power supply source 100 or the first battery unit 120 into three-phase AC power. The compressor 144, the defroster 146, and the heater 148 are selectively operated by the three-phase AC power converted by the inverter 142.

In addition, the main controller 180 controls the fan motor driving unit 150 to cool the air generated by the driving of the compressor 144 of the temperature control unit 140 or the heat generated by the driving of the heater 148. The main controller 180 controls the first converter 152 of the fan motor driving unit 150 by blowing the air into the food storage room to control the temperature of the food storage room. Step down the voltage of the DC power supplied by the unit 120, and drives the fan motor 154 with the reduced DC power, according to the cold air generated by the drive of the compressor 144 or the driving of the heater 148. The heat generated is blown into the food storage room to control the temperature of the food storage room.

Here, the main controller 180 detects the temperature of the food storage room using a temperature sensor, for example, and controls the switching operation of the inverter 142 according to the detected temperature of the food storage room to output from the inverter 142. The driving speed of the compressor 144 may be adjusted by adjusting the frequency of the alternating current power and driving the compressor 144 according to the alternating frequency.

The main controller 180 communicates with the battery controller 124 of the first battery unit 120 to acquire the information of the DC power charged in the battery cell 122 (S208). It is determined whether it is less than or equal to the preset minimum power (S210).

As a result of the determination, when the DC power charged in the battery cell 122 is less than or equal to the minimum power, the power supply source 100 is controlled to supply three-phase AC power (S212).

That is, the main controller 180 determines whether three-phase AC power is supplied from the outside, and the three-phase AC power supplied from the outside when the three-phase AC power is supplied from the outside is the DC power converter 110. The rectifier 112 is converted into pulse current power, and the capacitor 114 is converted into DC power and then supplied to the first battery unit 120 through the inductor 130.

In addition, the main controller 180 drives the engine 102 when the three-phase AC power is not supplied from the outside, the generator 014 generates three-phase AC power in accordance with the driving of the engine 102, the generator The three-phase alternating current power generated by 014 is converted into pulse current by the rectifier 112 of the DC power converter 110, and is converted into DC power by the capacitor 114, and then the first battery is converted through the inductor 130. To the unit 120.

The main controller 180 communicates with the battery controller 124 of the first battery unit 120 to instruct charging (S214). According to the charging command, the battery controller 124 charges the DC power output from the DC power converter 110 to the battery cell 122.

In this state of charging the DC power to the battery cell 122, the main controller 180 communicates with the battery controller 124 to determine whether the charging power of the battery cell 122 is greater than or equal to a preset maximum power. It is determined (S216).

As a result of the determination, when the charging power of the battery cell 122 is greater than or equal to a preset maximum power, the main controller 180 controls the power supply 100 to not supply three-phase AC power (S218).

In this state, the battery controller 124 operates the temperature controller 140, the fan motor driver 150, and the second converter 160 while discharging the DC power charged in the battery cell 122. Supply power.

The present invention has been described in detail with reference to exemplary embodiments, but those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. I will understand.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: power supply 102: engine
104: generator 110: DC power converter
112: rectifier 114: capacitor
120: first battery unit 122: battery cell
124: battery controller 130: inductor
140: temperature controller 142: inverter
144: compressor 146: defroster
148 heater 150 fan motor drive unit
152: first converter 154: fan motor
160: second converter 170: second battery
180: main controller

Claims (10)

A power supply for supplying AC power;
A DC power converter converting AC power supplied by the power supply into DC power;
A first battery unit charging the DC power converted by the DC power converter and supplying charging power as operating power;
A temperature controller configured to generate cold air or heat with a DC power supplied by the DC power converter or the first battery unit;
A fan motor driver for driving the fan motor with DC power supplied from the DC power converter or the first battery unit;
A second converter converting a voltage of the DC power supplied by the DC power converter or the first battery unit to charge the second battery; And
It operates with the output power of the second converter or the second battery, and controls the temperature control unit and the fan motor drive unit to adjust the temperature of the food storage room, the power supply source according to the state of charge of the first battery unit Main controller for controlling the supply of AC power; Power control device for a refrigerated, refrigerated and heated food transport vehicle configured to include.
The power supply of claim 1, wherein the power supply source comprises:
engine; And
A generator for generating an alternating current power according to the driving of the engine;
The main controller;
An electric power control device for a refrigerated, refrigerated and heated food transport vehicle, characterized in that the generator generates AC power by driving an AC power input from the outside or the engine.
The method of claim 1, wherein the first battery unit;
A battery cell charging DC power; And
Refrigerating, refrigerating and characterized in that it comprises a; a battery controller for controlling the DC power is charged or discharged to the battery cell, and communicating with the main controller to inform the main controller of the charging power of the battery cell Power control device for warm food transport vehicle.
The battery pack of claim 3, wherein the battery cell comprises: a battery cell;
A power control device for a vehicle for refrigeration, refrigeration and warm food transport, characterized in that the plurality of lithium polymer battery cells.
According to claim 1, wherein the temperature control unit;
An inverter for switching the DC power supplied by the DC power converter or the first battery unit to convert into AC power;
A compressor driven by the inverter to convert AC power to generate cold air;
And a heater driven according to the AC power converted by the inverter to generate heat. Power control apparatus for a vehicle for refrigerating, refrigerated and heated food carrying, characterized in that it comprises a.
6. The compressor of claim 5, wherein the compressor;
Inverter scroll compressor, characterized in that the power control device for a vehicle for freezing, refrigeration and hot food transport.
According to claim 5, The temperature control unit;
And a defroster which is driven according to the AC power converted by the inverter to remove defrost of the evaporator.
According to claim 1, The fan motor drive unit;
A first converter for converting a voltage of DC power supplied by the DC power converter or the first battery unit; And
Power control device for a refrigerated, refrigerated and heated food transport vehicle, characterized in that it comprises a ;; a motor for driving in accordance with the output power of the first converter to blow the cold air or heat generated by the temperature control unit to the food storage compartment; .
Controlling the temperature of the food storage room to a preset temperature while controlling the temperature controller and the fan motor driver by the main controller;
Determining, by the main controller, charging power of a battery cell by communicating with a battery controller;
When the determined charging power of the battery cell is less than or equal to a predetermined minimum power, the power supply source supplies AC power according to the control of the main controller, and the supplied AC power is converted into DC power by a DC power converter to be supplied to the battery cell. Allowing to be charged; And
When the determined charging power of the battery cell is greater than or equal to a predetermined maximum power, the power supply source does not supply AC power under the control of the main controller; power control method for a refrigerated, refrigerated and heated food transport vehicle configured to include.
The method of claim 9, wherein the AC power supply of the power supply;
Determining whether AC power is input from the outside;
Supplying AC power input externally when AC power is input from the outside as a result of the determination; And
When the AC power is not input from the outside as a result of the determination, causing the generator to generate AC power, and supplying AC power generated by the generator; refrigeration, refrigeration and warming Power control method of food transport vehicle.

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