JP2015055469A - Electric type refrigerant cycle device for hybrid freight vehicle using solar cell power source and electric generator power source - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric type refrigerant cycle device for a hybrid freight vehicle using a solar cell power source and an electric generator power source.SOLUTION: The invention relates to an electric type refrigerant cycle device for a hybrid freight vehicle, and the refrigerant cycle device includes: a large number of solar battery cell arrays arranged in a refrigerator vehicle; a capacitor connected to the cell arrays; an AC generator; a rotor field control device for converting alternate current to direct current and maintaining a direct current voltage at a prescribed level; a battery module connected to the AC generator; a motor whose number of revolutions can be adjusted; a scroll type refrigerant compressor connected to the shaft of the motor; a condenser connected to the refrigerant compressor; and a power supply unit for supplying electric voltage and electric current of a prescribed range to the motor. The number of revolutions of the motor is adjusted by an internal temperature of a container in the refrigerator vehicle or an engine speed.

Description

  The present invention relates to an electric refrigerant cycle device for a freight vehicle that uses a solar cell power source and a generator power source. Specifically, a solar cell array (PV array) is provided on a top surface of a container of a refrigeration vehicle, and charging is performed. A charger (charge controller), an overcharge / overdischarge prevention circuit, a storage battery (battery storage), and an energy conversion device are installed, and an energy conversion device (AC → DC voltage) is provided between the generator and the motor. If there is an energy conversion device (DC → AC voltage, inverter) between the motor and the solar cell power supply is not sufficient, the power is supplied in a hybrid manner using the generator power supply. The refrigeration function can be performed even when stopped without being affected by changes in the engine speed of the car. On electric refrigerant cycle device for cargo vehicles of the hybrid system to use a solar cell power supply and generator power.

Refrigeration boarding refers to a van or truck designed to carry perishable cargo at a specific temperature. The refrigeration board is equipped with a refrigeration system in which something like carbon dioxide is used as a refrigerant while being driven by a diesel engine.
As a prior art related to refrigeration boarding, there is a refrigeration apparatus for refrigeration boarding in Patent Document 1. The prior art is for a refrigeration vehicle in which a battery is charged using a generator that generates power by the power of the engine without directly connecting the engine and the compressor, and the compressor is driven using the energy charged in the battery. A refrigeration apparatus is provided. Such a prior art includes an automobile engine, a generator driven by the engine, a refrigerator battery storing electric power produced by the generator, and a DC driven using the electric power of the refrigerator battery. A motor and a refrigeration cycle including a compressor driven through the DC motor, and a power switch that can be operated by a driver is provided in the cab, and the DC motor and the compression are controlled by an electric input value. The refrigerator battery is supplied with electric power through a route for applying the electric input to the clutch through the power switch and a route for driving the DC motor through a relay. The clutch and the relay are electrically connected, and an electric input is applied to the clutch. The DC motor and the compressor are mechanically connected, and at the same time, the relay electrically connects the refrigerator battery and the DC motor, and the compressor is driven by the DC motor. A refrigeration apparatus for refrigeration boarding is disclosed.

  As another prior art related to refrigeration boarding, there is a hybrid cooling system for refrigeration boarding in Patent Document 2. The prior art provides a cooling system that can reduce the cold storage time of the cold storage plate while maintaining the temperature of the loading cabinet at a low temperature when the engine of the refrigeration vehicle is stopped. Such a prior art includes a power supply device comprising a vehicle engine and an external power supply, a compressor that obtains driving force from the power supply device, and produces sucked refrigerant into a high-temperature or high-pressure refrigerant, and the compressor. The discharged high-temperature and high-pressure refrigerant is transmitted to a condenser that creates a low-temperature and high-pressure refrigerant, an expander that converts the low-temperature and high-pressure refrigerant into a low-temperature and low-pressure refrigerant by pressure change, and the low-temperature and low-pressure refrigerant is evaporated Disclosed is a hybrid cooling system for a refrigerated vehicle that includes a cold storage evaporator that absorbs the surrounding heat to lower the temperature inside the loading cabinet, stores cold air, and dissipates the stored cold air To do.

  The prior art or the known technology has a structure in which the refrigeration apparatus does not operate or operates in a limited range even when the engine is stopped. Furthermore, another problem with the refrigeration apparatus is that it must operate so that the refrigeration apparatus is maintained at a constant temperature regardless of the traveling speed of the vehicle. The prior art does not present a solution to such a problem.

Korean Patent No. 10-0816642 Korean Patent Publication No. 2012-0048305

  In order to solve the above-mentioned problems, the present invention includes a solar cell array on the upper surface of a container of a refrigerated vehicle, and includes a charge controller, an overcharge / overdischarge prevention circuit, a storage battery, and an energy conversion device (inverter). If an energy conversion device (AC → DC voltage) is provided between the generator and the motor, and an energy conversion device (DC → AC voltage) is provided between the battery and the motor. Solar power is supplied in a hybrid manner using machine power, and the electric energy generated by driving the generator during the running process is stored in the battery management module and operated to the required level regardless of the running speed of the vehicle It is an object of the present invention to provide an electric refrigerant cycle device for a hybrid type freight vehicle using a cell power source and a generator power source.

  In order to solve the above-mentioned problems, the present invention provides an electric refrigerant cycle device for a hybrid freight vehicle using a solar cell power source and a generator power source. , A solar cell power supply unit that includes an overcharge / overdischarge prevention circuit, charges / discharges a storage battery, and includes an energy conversion device, and a rotor having a power transmission brush, three-phase or six-phase A stator wound by a coil, at least six rectifying elements for converting alternating current to direct current, heat radiating means for radiating heat from the rectifying elements, and a rotor field controller for adjusting output voltage or current A generator, a battery module charged by an electromotive force of the generator, a stator wound by a three-phase coil, a brushless rotor for transmitting power, and a stator field control And a motor driven by a battery module, a scroll-type refrigerant compressor driven by the motor, and a high-temperature and high-pressure exhausted from the refrigerant compressor A condenser to which refrigerant is transmitted to produce low-temperature and high-pressure refrigerant, and a power supply device that supplies a predetermined range of voltage and current to the motor, and the number of revolutions of the motor depends on the internal temperature of the container and the engine The structure is such that the discharge amount of the refrigerant compressor is adjusted at any time so as to save fuel while automatically adjusting according to the speed and maintaining the internal temperature of the container. An energy conversion device (AC → DC voltage) is provided between the AC generator and the drive motor, and an energy conversion device (DC) is provided between the battery and the drive motor. AC voltage, an inverter), if it is sufficient solar cell power supply, wherein the power in a hybrid system is supplied with the generator power.

  The solar cell power supply charging unit includes a flannel lens for condensing light, and includes a solar cell array (solar modular array, PV array) using a PN junction semiconductor. When illuminated by a solar cell array, a photovoltaic cell array that generates a DC current and a DC voltage by converting into electrical energy by a photo-voltaic effect, and a DC current generated from the photovoltaic cell array as a load Direct charge and charge controller that supplies and controls the battery so that it is charged, and the DC current and voltage supplied from the charge regulator prevent overcharge and overdischarge depending on the capacity of the battery when charging or discharging. Overcharge / overdischarge prevention circuit providing a function to perform The electrical energy is converted into chemical energy and charged, while the storage battery is discharged to supply power to the load and supplies electric energy, and is connected to the charge regulator, and the inverter ( In the case of PV inverter, an AC power source (AC) is converted into a DC power source (DC), or an energy conversion device that converts a DC power source into an AC power source is included.

  According to another embodiment of the present invention, the battery module further includes a battery module that is charged by the electromotive force of the generator, supplies power to the power supply device, and drives the refrigerant cycle even when the vehicle is stopped. , Including at least four unit cells connected in series or in parallel and capable of being charged.

  According to still another embodiment of the present invention, the apparatus further includes an external connection adapter that is connected to an external AC power source when the vehicle is stopped, the external connection adapter including an inverter that converts the external AC power source into a direct current, an overvoltage cutoff. Device and overcurrent interrupt device.

  According to still another embodiment of the present invention, an electric refrigerant cycle device for a freight vehicle includes a control module, a power generation module that generates electromotive force from engine power, and a battery module that stores the electromotive force of the power generation module. A drive motor operated by the battery module, a cycle control unit for controlling the connection between the battery module and the drive motor 15, a cooling module operated by the drive motor, a container frozen by the cooling module, a drive motor and a container The control module has operation determination data specific to the engine and the battery module, and one operation data is selected according to the operation state of the engine.

  The refrigeration apparatus according to the present invention includes a solar cell array on the upper surface of a container of a refrigeration vehicle, and includes a charge controller, an overcharge / overdischarge prevention circuit, a storage battery, and an energy conversion device, and is provided between a generator and a motor. It is equipped with an energy conversion device (AC → DC voltage), an energy conversion device (DC → AC voltage, inverter) between the battery and the motor, and if the solar cell power supply is not sufficient, the hybrid using the generator power supply In this way, power is supplied to the refrigeration vehicle.

  The refrigeration apparatus operates independently regardless of the operation state of the vehicle, and thus has the advantage that the refrigeration state of the refrigeration container can be maintained at a required constant level. The refrigerant cycle device according to the present invention has an advantage of reducing greenhouse gas emissions while preventing waste of energy due to idling of the vehicle. Furthermore, the refrigerant cycle device according to the present invention has an advantage of enabling modularization so as to be applied to various types of automobiles. Furthermore, the refrigerant cycle apparatus according to the present invention generates electric power by a generator instead of a refrigerant compressor that is driven by a belt connected to an engine crankshaft, and drives the refrigerant compressor by controlling the motor speed with the electric power. By applying this structure, the rotational speed of the refrigerant compressor is not affected by the engine speed and has an advantage that it is environmentally friendly.

The perspective view which provided the solar cell array on the container of the frozen boarding by this invention Refrigeration board solar cell array system configuration diagram 1 is a configuration diagram of an electric refrigerant cycle device for a hybrid type freight vehicle using a solar cell power source and a generator power source according to an embodiment of the present invention. The block diagram which shows embodiment of the process in which the storage battery is charged or discharged by the control module in the refrigeration apparatus according to the embodiment of the present invention, and the operation of the drive motor is controlled.

  DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to embodiments illustrated in the accompanying drawings, which are for the purpose of providing a clear understanding of the invention, and the invention is not limited thereto. is not. In the following description, components having the same reference numerals in different drawings have similar functions, and thus will not be described repeatedly, and well-known components will be briefly described or omitted. It is not excluded from the embodiments of the invention.

  In the following description, a freight vehicle includes any vehicle capable of freight transportation, including but not limited to vehicles such as trucks or vans. The refrigerant cycle apparatus means an apparatus for circulating or cooling refrigerant for the purpose of refrigeration or freezing to lower or hold a container or storage space in which cargo is stored at a required temperature. The refrigeration or refrigeration system or the structure of the container can take various forms, and the present invention is not limited by the refrigeration or refrigeration system or the structure of the container. Furthermore, in this specification, the refrigerant cycle device means a device that is the same as or similar to the refrigeration device.

  The refrigerant cycle apparatus according to the present invention includes a rotor having a power transmission brush, a stator wound by a three-phase or six-phase coil, at least six rectifier elements for converting alternating current to direct current, and heat dissipation of the rectifier elements. A generator having a rotor field controller for adjusting output voltage or current, a battery module charged by an electromotive force of the generator, and a stator wound by a three-phase coil, A brushless rotor and stator field controller for power transmission, and a motor capable of adjusting the number of revolutions, and a voltage stabilizer for supplying a predetermined range of voltage and current to the motor And a scroll-type refrigerant compressor driven by the motor, and the rotational speed of the motor is automatically adjusted according to the internal temperature of the container and the engine speed. And features.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view including a solar cell array on a container of a refrigeration board according to the present invention.
Electric refrigerant cycle equipment for freight vehicles using solar cell power generator and generator power supply is equipped with a solar cell array on the upper surface of the container of the refrigeration board, charging regulator, overcharge / overdischarge prevention circuit, storage battery, energy A solar cell equipped with a conversion device, equipped with an energy conversion device (AC → DC voltage) between the generator and the motor, and equipped with an energy conversion device (DC → AC voltage, inverter) between the battery and the motor. If the power supply is not enough, power is supplied to the refrigeration vehicle in a hybrid manner using the generator power supply.

FIG. 2 is a configuration diagram of a solar cell array system for a refrigerated vehicle.
A solar cell array system (solar cell array system) 200 for a refrigerated vehicle is composed of a solar cell array 210, a charge controller 220, an overcharge / overdischarge prevention circuit 230, a storage battery 240, and an energy conversion device-inverter 221. The
The solar cell array 210 includes a flannel lens for condensing light and is composed of a solar cell array (PV array) using a PN junction semiconductor. When solar energy collected by the flannel lens is illuminated by the solar cell array, photovoltaic power is generated. It converts into electric energy by the effect, and generates DC current and DC voltage. Currently used solar cells are 98% single-crystal silicon solar cells, ultra-high purity semiconductors, making solar cells highly efficient with polycrystalline silicon (poly-Si) A polycrystalline thin film silicon solar cell such as crystalline silicon (a-Si) is used. Techniques for depositing high-quality polycrystalline thin films include chemical vapor deposition (CVD), liquid phase epitaxy (Liquid Phase Epitaxy, LPE), solid phase crystallization (Solid Phase Crystallization, SPC). Law) has been studied.

  If sunlight is irradiated to the PN junction of the solar battery cell, electrons are bonded to the upper electrode and holes are bonded to the lower electrode, and the photovoltaic effect causes a gap between the two electrodes. A photoelectromotive force is generated in the current to generate a DC current and a DC voltage proportional to the photon flux density.

In one embodiment, the solar cell array 210 has a solar cell capacity of less than 100 kWp in a small-scale PV power system.
The charge regulator 220 directly supplies the DC current generated from the solar cell array 210 to the load, and supplies and controls the storage battery so as to be charged.
The overcharge / overdischarge prevention circuit 230 provides a function of preventing overcharge and overdischarge depending on the capacity of the storage battery when charging or discharging the DC current and voltage supplied from the charge regulator 220. In overcharge, if the storage battery rises above a certain voltage, the storage battery is corroded and gas is generated to shorten the life of the storage battery. In the case of overdischarge, if the storage battery decreases to a certain voltage (eg, DC 23 V) or less, precipitates are generated in the storage battery, and the performance of the storage battery gradually decreases.
The storage battery 240 is connected to the overcharge / overdischarge prevention circuit 230 and converts electric energy into chemical energy for charging. On the other hand, the storage battery 240 is discharged to supply power to the load to supply electric energy. The storage battery 240 used in the solar power generation system is a secondary battery, and mainly uses a lead-acid battery or a nickel-cadmium battery.

The energy conversion device-inverter 221 is connected to the charge controller and converts an alternating current power supply (AC) into a direct current power supply (DC), or converts a direct current power supply (DC) into an alternating current power supply (AC).
In the embodiment of the present invention, an energy conversion device (AC → DC voltage) is provided between the generator and the motor, and an energy conversion device (DC → AC voltage, inverter) is provided between the battery and the motor.
For reference, the small-scale photovoltaic power generation system has a solar cell capacity of less than 100 kWp and is used for residential systems, lighthouse power supplies, and mountainous power supplies, and is a medium-scale PV power system. system) is used in buildings, hospitals, airfields, etc. with solar battery capacities of 100 kWp to 500 kWp, and large-scale solar power generation systems are power supply companies that operate in cooperation with 500 kWp class or higher solar power plants or power lines. Used in

FIG. 3 is a configuration diagram of an electric refrigerant cycle device for a hybrid freight vehicle using a solar cell power source and a generator power source according to an embodiment of the present invention.
Referring to FIG. 3, an electric refrigerant cycle device for a hybrid freight vehicle includes a control module C, power generation modules 11a and 11b that generate electromotive force from the power of an engine E, and power generation modules 11a and 11b. Battery modules 12 and 13 that store electric power, a drive motor 15 that operates by the battery modules 12 and 13, a cycle control unit 14 that controls connection between the battery modules 12 and 13 and the drive motor 15, and an operation by the drive motor 15 Cooling modules P and S, a container T frozen by the cooling module P, and sensors 16a and 16b that sense the state of the drive motor 15 and the container T.
The refrigerant cycle apparatus according to the present invention can be applied to a vehicle having a refrigerated container having a structure such as a van or a truck, but is not limited thereto, and converts and stores energy generated from traveling of the vehicle, and Then, it can be applied to any vehicle which generates energy for refrigeration and freezes a certain storage space.

  The engine E can be mainly a diesel engine, but is not limited thereto, and can be any engine applied to a vehicle. For example, the engine E may be a hybrid engine, and the generator may have the same or similar structure as the generator of the hybrid vehicle. Thus, in this specification, the engine E is used as a comprehensive meaning. Engine E means a device that generates power mainly by reciprocating movement of a piston, but in this specification, engine E includes all devices related to power generation or power transmission, and energy is generated in the power generation process. Additional devices for the conversion of The engine E has a function of converting gasoline, diesel, or electric energy into kinetic energy.

  The power generation modules 11a and 11b may have a function of converting part of the converted energy into electric energy again. The power generation modules 11a and 11b can be connected to a crankshaft to generate electricity, for example. Generally, since the generator is provided in the vehicle, the power generation modules 11a and 11b according to the present invention may include a generator of the vehicle or a separately provided generator. Whether or not a separate generator is installed can be determined by the capacity, structure, or size of the installation space of the existing generator. If the capacity of the generator of the vehicle is not sufficient, the generator of the vehicle can be removed and replaced with a new generator. The power generation modules 11a and 11b may include a generator 11a and an inverter 11b that are separately provided or replaced as described above. The generator 11a is a three-phase AC generator that generates stable alternating current by rotating a rotor coil, and can be designed to maintain a constant level voltage regardless of the traveling speed of the vehicle.

  The power generation modules 11a and 11b include a generator 11a and an inverter 11b. The generator 11a includes, for example, a rotor having a transmission brush, and a stator wound with a three-phase or six-phase coil. And the inverter 11b can include a rectifying element for converting alternating current into direct current, and a heat dissipation means for heat dissipation of the rectifying element. Furthermore, the power generation modules 11a and 11b can include a field control device for controlling the field of the rotor. The rotor or stator can be in any form known in the art, but the output voltage or output current is adjusted by the field controller, for example, the output is controlled through field control of the rotor. The field control may consist of a method of adjusting the rotational speed or magnetic flux of the rotor of the generator, or a method of controlling the stator or inverter. In the field control, the output of the generator is controlled to a predetermined level such as 14 to 28 V regardless of the traveling speed of the engine. Field control is performed by various methods such as an analog distributed method and a digital centralized method, and the present invention is not limited by the field control method. The heat dissipating means is, for example, a metal heat dissipating means having a high thermal conductivity such as aluminum, and is disposed inside the generator modules 11a and 11b. Various heat dissipating means such as pins or plates can be heat dissipating means according to the present invention.

  The battery modules 12 and 13 can be charged using the electromotive force generated by the power generation modules 11a and 11b. The battery modules 12 and 13 can include a battery management unit 12 and a storage battery 13. The battery management unit 12 controls the charging and discharging of the storage battery 13, and the storage battery 13 is preferably at least one, and may be composed of at least four cells. The plurality of cells may be in series, parallel, or a combination thereof, and may be desirably connected in series. The storage battery 13 is, for example, a lithium-based battery, and the battery management unit 12 can include a constant voltage or constant current circuit. The battery management unit 12 can control the current or voltage that flows from the inverter 11 b and can control the current or voltage that is transmitted from the storage battery 13 to the cycle control unit 14. As another embodiment, when the storage battery 13 includes a large number of cells, for example, at least four cells, charging or discharging of each cell is controlled. For example, the battery management unit 12 can determine a charging order with a large number of cells, determine a charging level, and determine a discharging order or a discharging level. Specifically, the charge level of each cell may be determined to be 95% of the total charge level, or the discharge level may be determined to be 5% of the total discharge level to determine the charge and discharge order of each cell. it can. As another embodiment, the battery management unit 12 detects whether or not the storage battery has malfunctioned. As described above, when the storage battery 13 includes a plurality of cells, the battery management unit 12 detects and controls the operation state of each cell. To module C. Thereby, the control module C can confirm the state of the storage battery 13 and determine whether to charge and discharge the storage battery 13 or to repair it. For example, there are two to eight cells, and each cell can be connected in series or in parallel. In the charging process, the charging process of each cell is uniformly charged while being limited to a predetermined level. In the discharge process, each cell is uniformly discharged while the discharge level is limited to a predetermined level. Such a uniform level of charging or discharging ensures stable charging or discharging while increasing the lifetime of the cell. For example, the charge level is set to 50% in the first stage, 70% in the second stage, and 90% in the third stage, and the discharge stage is 50% in the first stage and 30% in the second stage. %, And 10% in the third stage to be made uniform for each cell.

The cycle control unit 14 can control the rotation speed or duty cycle of the drive motor 15. Further, the cycle control unit 14 may include a voltage stabilization circuit or a current stabilization circuit. For example, the cycle control unit 14 can control so that the voltage transmitted to the drive motor 15 is DC 14 to 28 V and the current is 50 to 150 A. For this purpose, the cycle control unit 14 may have a constant voltage circuit or a constant current circuit.
The voltage or current stabilization circuits differ from each other depending on the pressure required by the compressor P when the drive motor 15 in a range in which a direct current transmitted to the drive motor is defined is a synchronous induction motor. The stator induction frequency is set. The cycle control unit 14 may have predetermined data on the pressure applied to the compressor P and the motor speed for proper control of the drive motor 15. For example, the current temperature of the container T, the target temperature, the time for reaching the target temperature, and the optimum duty ratio data based on the charge level of the storage battery 13 can be included. As another embodiment, the cycle control unit 14 may determine the duty ratio based on the operation time allowed from the battery management unit 12. Allowable operating time refers to the amount of power used for a period of time for refrigeration, excluding the basic charge levels that a rechargeable battery must have, taking into account statistical vehicle operation and downtime. .

Data is prepared based on various parametric variables, and relevant data is updated, and the present invention is not limited to the presented embodiments.
The drive motor 15 may include a stator wound with a three-phase coil and a brushless rotor for power transmission. Furthermore, the drive motor 15 can adjust the rotation speed, and can have a field controller. The field controller forms a rotating magnetic field on the stator of the drive motor 15, and the rotor receives the induction of the rotating magnetic field. Specifically, the drive motor 15 can be a synchronous induction motor. For example, it can be a BLAC motor. The drive motor 15 is connected to the compressor P and compresses the refrigerant to create a high temperature and a high temperature state. As the compressor P, a reciprocating compressor is generally used in a vehicle, but it is preferable that the compressor P can be a scroll compressor. Since the scroll compressor does not have a piston and valve structure, it can reduce loss and increase efficiency. The refrigerant compressed by the drive motor 15 lowers the temperature of the container T while passing through the condenser S and the evaporator. Such a refrigeration or freezing process may be performed by any method known in the art, and the refrigerant may be, for example, a CFC, HCFC, or HFC system, but is not limited thereto.

According to the present invention, refrigeration is performed by the generator 11a, the storage battery 13, and the drive motor 15, and the generator 11a generates an electromotive force from the engine E of the vehicle. As another embodiment, the temperature of the container T needs to be maintained at a certain level when the vehicle is stopped, and therefore, the drive motor 15 needs to operate. Therefore, the operating state of the engine E, the temperature of the container T, and the operating state of the motor 15 need to be sensed in real time at a constant cycle.
When the vehicle is operated below a certain speed, there may be a case where the electromotive force of the generator is insufficient and the motor cannot be driven. In the present invention, the speed of the motor connected to the compressor is adjusted. And since it controls so that a motor is not stopped, the temperature of a container is hold | maintained. A sensor D for sensing the state of the engine E is provided, and a necessary signal value can be transmitted to the control module C. The sensor D may be directly connected to the engine E or may be connected to an ECU (Electronic Control Unit). A temperature sensor 16 a for detecting the temperature of the container T is provided, and an operation sensor 15 for detecting the operating state of the drive motor 15 may be provided in the drive motor 15.

  The control module C can control the charging or discharging of the storage battery 13 or the operation of the drive motor 15 based on the signals transmitted from the sensors D, 16a, and 16b. A process in which the drive motor 15 is controlled while the storage battery 13 is charged or discharged by the control module C will be described below.

FIG. 4 illustrates an embodiment of a process in which the storage battery is charged or discharged by the control module and the operation of the drive motor is controlled in the refrigeration apparatus according to the present invention.
Referring to FIG. 4, the control module 21 determines the state of the engine, the container, the storage battery, or the drive motor from each signal transmitted from the detection sensors 26a, 26b, and 26c such as a temperature sensor, a position sensor, or an engine detection sensor. Can be detected. The state of the storage battery can be transmitted from, for example, a battery management unit.

  The control module 21 has predetermined operation determination data, and can determine the most suitable operation data from the operation determination data based on the signals transmitted from the sensors 26a, 26b, and 26c. Specifically, the operation determination data may include operation determination data created based on, for example, the engine speed, the state of charge of the storage battery, and the temperature of the container. The operation determination data is determined differently depending on the types of the generator and the drive motor, and can be determined uniquely for each refrigeration board. The control module 21 has a data storage unit 22 for storing automatic determination data, and a determination unit 23 for comparing the detection signals transmitted from the sensors 26a, 26b, 26c with the data of the data storage unit 22. Can be included. The data of the data storage unit 22 can be updated and the optimum operating data can be selected by the decision unit 23 under the current conditions.

If the optimum operating data is selected by the decision unit 23, the respective device for refrigeration of the container is activated by the activation control unit 24 and the activation unit 25 is activated. The data storage unit 22, the determination unit 23, and the operation control unit 24 are substantially part of the control unit 21, and the operation unit 25 is, for example, a generator, a storage battery, a drive motor, or a compressor. Can be anything. The operating state of the operating unit 25 is detected by the detection sensors 26a, 26b, 26c at a constant cycle, and the above-described process can be repeated at a constant cycle again.
It needs to be verified that the operating data selected by the decision unit 23 is optimal data. Whether or not there is optimal operating data can be determined by selecting one or two parameters in a given condition and detecting changes in the selected parameters. In the refrigeration apparatus according to the present invention, such a standard parameter can be the discharge rate of the storage battery. For example, the allowable battery discharge rate for the operating data determined by the determination unit 23 can be determined. Then, in the process in which the operation unit 25 operates according to the operation data determined by the determination unit 23, for example, the discharge rate of the operation unit 25 such as a storage battery can be measured. Whether or not the discharge rate is within a predetermined allowable range is determined by the standard unit 28, and the result can be transmitted to the determination unit 23. Then, the determination unit 23 again determines the optimum operating data according to the result transmitted by the standard unit 28, so that the operation control unit 24 operates the operating unit 25 and the results are sent to the sensors 26a, 26b. , 26c, and feed back to the control module C. Thereby, the optimum operating data can be retained or selected again.

  As another embodiment, the operation of the storage battery and the operation of the drive motor in the refrigeration apparatus according to the present invention perform the main functions in the entire operation. Therefore, it is necessary to be monitored accurately at a constant cycle of the operation of the storage battery. Since the operation of the storage battery is affected by temperature and pressure, for proper operation of the storage battery, the temperature and pressure must be measured at regular intervals and thereby the discharge and charging of the storage battery must be controlled. is there. Further, even when traveling is performed, it may be difficult to generate power from the engine. A reset operation sensor 29 for detecting such a situation may be provided separately. The reset operation sensor 29 is for detecting the temperature, pressure or engine emergency state of the storage battery. For example, when an allowable temperature range, pressure range or engine emergency state occurs, Discharging can be interrupted. In particular, the charge or discharge conditions of the storage battery can be determined by the pressure value measured from the reset operation sensor 29. Charging or discharging the storage battery is affected by external pressure, which can change the operating state of the drive motor. Thus, the reset actuation sensor 29 has data for the proper pressure associated with the operation of the battery, and can transmit this to the control module C if the pressure change is at a level that requires the change. The control module C has data for discharge or charge conditions at an appropriate level due to pressure changes, and thereby can set the charge or discharge conditions of the storage battery again.

As another embodiment, an external connection adapter EO for connecting an external power source to the cooling device or the storage battery according to the present invention may be provided. Specifically, the external power source can be directly connected to the storage battery, for example, and can be connected while the vehicle is stopped. The battery management unit includes a switching unit for connecting an external power source, and a conversion device, an overvoltage cutoff device, or an overcurrent cutoff device that converts an external AC power source connected to the external power source into a direct current is arranged. If the external power source EO is connected, the battery management module can transmit a connection signal to the control module C. In practice, the charging process by the external power source is performed by the battery management module, and the control module C controls the connection state between the generator and the battery module. If necessary, the external connection adapter EO may include an inverter, an overvoltage circuit breaker, or an overcurrent circuit breaker that converts the external AC power supply to DC.
The refrigeration apparatus is operated by the control module C in various ways, and the present invention is not limited to the presented embodiments.

Hereinafter, the operation process of the refrigeration apparatus according to the present invention will be described.
In the operation method of the refrigeration apparatus, an electromotive force is generated by a generator connected to an engine or a crankshaft, and can be converted by an inverter. For example, the generator includes a stator and a rotor around which a field coil is wound, and the electromotive force generated from the generator is maintained at a constant level regardless of the engine speed (RPM). Controlled. A certain level of voltage means an appropriate voltage required for charging a storage battery, for example. In order to maintain the electromotive force generated from the generator at a constant level, for example, a field control unit is provided, and the field control unit has a function of adjusting the voltage generated by the engine speed to a predetermined range. Yes. For example, the predetermined range is 20-30V DC and is adjusted to be maintained regardless of engine speed.

The battery can be charged by the electromotive force subjected to voltage control. The charging process of the battery is controlled by, for example, a battery management unit. If the battery is a lithium ion battery including a plurality of cells, the charging of each cell is appropriately adjusted according to the discharge state. The operating condition of the drive motor can be detected during the battery charging process. The operating conditions can be determined by the state of the container, the state of charge of the battery or the driving state of the engine.
If an operating condition is selected, appropriate operating data can be selected by the control module according to predetermined conditions. The actuation data can be selected from predefined actuation decision data. If operation is selected, it activates the drive motor and can be detected periodically.
While the operation is periodically detected, it can be detected by the control module whether the operating condition is within an acceptable range. The state of the container is changed by the operation of the drive motor, and the discharge condition can be changed depending on the degree of charge of the battery. Thereby, the rotational speed of a drive motor such as a synchronous induction motor is appropriately adjusted by the operation data.

If it is not within the tolerance range (NO), the operation is selected again, and if it is within the tolerance range, the battery pressure or temperature can be detected periodically. Battery pressure or temperature can affect battery operation by level. The reset actuation sensor described above may have a pressure change range or a temperature change range where the operating conditions must be changed. And it can be detected periodically whether it corresponds to a pressure change range or a temperature change range (step S38). For example, the pressure change range may be 5 mbar to 10 mbar, and the temperature change range may be 5 to 10, but is not limited thereto.
If the operation change level is not reached (NO), various data generated during the operation process can be stored. On the other hand, if the predetermined change range is satisfied (YES), the reset operation sensor can transmit this to the control module.
Depending on the value transmitted from the reset control sensor, the control module can again select to operate, and thereby the drive motor is activated. Various data generated in the operation process means, for example, an error generated from predetermined operation determination data, and is used for updating the operation determination data in the future. Various data related to operation are stored, and the present invention is not limited to the presented embodiments.

  The refrigeration apparatus according to the present invention has an advantage that the refrigeration state of the refrigeration container can be maintained at a required constant level by operating independently of the operation state of the vehicle. The refrigerant cycle device according to the present invention has an advantage of reducing greenhouse gas emissions while preventing waste of energy due to idling of the vehicle. Furthermore, the refrigerant cycle device according to the present invention has an advantage of enabling modularization so as to be applied to various types of automobiles. Furthermore, the refrigerant cycle apparatus according to the present invention generates electric power by a generator instead of a refrigerant compressor that is driven by a belt connected to an engine crankshaft, and drives the refrigerant compressor by controlling the motor speed with the electric power. By adopting such a structure, since the rotational speed of the refrigerant compressor is not affected by the engine speed, the fuel is prevented from being excessively consumed during high-speed operation, so that it has an advantage of being environmentally friendly.

  Although described with reference to the preferred embodiments of the present invention, those skilled in the art will make various modifications or variations to the present invention without departing from the spirit and scope of the present invention described in the following claims. Can be implemented. The present invention is not limited by such variations and modifications, and is specified by the claims.

  The present invention is applicable to a technical field related to an electric refrigerant cycle device for a hybrid type freight vehicle using a solar cell power source and a generator power source, and is industrially useful.

11a, 11b Power generation module 12, 13 Battery module 14 Cycle control unit 15 Drive motor 16a, 16b Sensor 21 Control module 22 Data storage unit 23 Determination unit 24 Operation control unit 25 Operation unit 26a, 26b, 26c Detection sensor 28 Standard unit 29 Reset Operation sensor 100 Refrigeration boarding 200 Solar cell array system 210 Solar cell array 220 Charge controller 230 Overcharge / overdischarge prevention circuit 240 Storage battery 221 Energy conversion device-inverter

Claims (3)

An electric refrigerant cycle device for a hybrid type freight vehicle,
A number of solar cell arrays arranged in the refrigeration board,
A capacitor connected to the solar cell array;
An alternator,
A rotor field control device that converts alternating current to direct current and maintains a direct current voltage at a predetermined level;
A battery module connected to an alternator;
A motor capable of adjusting the rotational speed;
A scroll-type refrigerant compressor connected to the shaft of the motor;
A condenser connected to the refrigerant compressor;
A power supply for supplying a predetermined range of voltage and current to the motor,
An electric refrigerant cycle device that adjusts the number of rotations of a motor according to an internal temperature of a container of a refrigeration vehicle or an engine speed. The electric refrigerant cycle device according to claim 1, further comprising a charge regulator that couples a current of the cell array to a load or a storage battery. The electric refrigerant cycle device according to claim 1, wherein the storage battery includes an external connection terminal.

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