KR101871410B1 - Modular power supply system - Google Patents

Abstract

A power supply device according to the present invention comprises: a housing formed in a movable form; and a power supply unit installed in the housing and formed to supply power to a load device. The power supply unit comprises: a rechargeable battery; a charging controller connected to the battery and controlling the charging power of the battery; an inverter connected to the charging controller and converting the power of the battery; a motor operated by the power of the inverter; a motor controller formed to control the input power of the motor between the motor and the inverter; a transmission gear unit connected to the output shaft of the motor, reducing the rotation speed of the output shaft, and increasing a torque; a generator connected to the transmission gear unit and formed to supply rated power to the load device; a circuit breaker having one end connected to the generator and the other end connected to the load device to supply the rated power to the load device and to be blocked when power is abnormal; a transformer connected to an output terminal of the generator to convert an output voltage of the power generator and to supply the output voltage to the charging controller; and a controller connected to at least the inverter, the motor controller, and the circuit breaker to control the speed of the motor, the operation of the circuit breaker according to the state of the load device, and the charging state of the battery.

Description

{MODULAR POWER SUPPLY SYSTEM}

The present invention relates to a power supply.

Power failure accidents are caused irrespective of the intentions of the family or the company, which is the consumer, and the damage may be caused. Power disturbances can be caused by lightning, forest fires, rainfall, line breakdowns, landslides, construction, heavy snowfall, etc., which cause instability of power supply. The emergency power supply operates in such a case to operate for a certain period of time to minimize the expansion of losses that may occur due to the sudden stop of the load device.

On the other hand, the use of commercial power at a time when the price of electricity is high from the viewpoint of the consumer is a cost burden. The higher the energy dependence on thermal power or nuclear power, the more destruction and pollution of the environment will be added. Therefore, efforts are being made to reduce the use of fossil or nuclear energy and replace it with environmentally friendly energy using wind power and solar energy. A power supply that can be used directly in the customer can reduce overall costs by saving power costs or combining alternative energy.

Recently, a generator using a permanent magnet has been developed and applied to a system capable of producing small and medium-sized electric power while reducing facilities and volume of the electric power generator. Nevertheless, existing devices are limited to electric power supply systems using generators, and there is a limit to realistic use in homes or businesses.

* Related Prior Art

Korean Registered Patent No. 10-1758156 (Announced on July 14, 2017)

Korean Registered Patent No. 10-1727060 (Announcement of Apr. 17, 2017)

It is an object of the present invention to provide a power supply device capable of providing power generation energy by using a battery, a motor, and a generator while moving easily regardless of a location according to a load device.

A power supply apparatus according to the present invention includes: a housing formed in a movable form; And a power supply unit installed in the housing and configured to supply power to the load device, wherein the power supply unit includes a rechargeable battery; A charging controller connected to the battery and controlling a charging power of the battery; An inverter connected to the charge controller and converting power of the battery; A motor operated by the power supply of the inverter; A motor controller configured to control the input power of the motor between the motor and the inverter; A transmission gear unit connected to the output shaft of the motor, for reducing a rotational speed of the output shaft and increasing torque; A generator connected to the transmission gear unit and configured to supply a rated power to the load device; A breaker connected to the generator at one end and connected to the load device to supply a rated power to the load device, A transformer connected to an output terminal of the generator to convert the output voltage of the generator and supply the converted output voltage to the charge controller; And a controller connected to at least the inverter, the motor controller, and the breaker, and configured to control a speed of the motor, an operation of the breaker according to the state of the load device, and a state of charge of the battery.

According to an embodiment of the present invention, the power supply device includes a cooling unit disposed at an output end of the transformer and configured to maintain a temperature in the housing when the temperature inside the housing is higher than a reference temperature under the control of the controller .

 In an embodiment of the present invention, the charge controller may be further connected to at least one of an external commercial power source, a solar power generation power source, and a charging power source.

As an example related to the present invention, the power supply may further include a first switch provided between the output terminal of the generator and the transformer, and configured to connect or disconnect the circuit under the control of the controller.

As an example related to the present invention, the power supply may further include a second switch disposed between the output terminal of the transformer and the charge controller, and configured to connect or disconnect the circuit under the control of the controller .

As an example related to the present invention, the power supply apparatus may further include a voltmeter and an ammeter configured to detect a voltage and a current for each phase (phase) of the output power of the generator.

As an example related to the present invention, the controller may be integrally assembled with the boltmeter and the ammeter so as to be formed in the form of an explosion-proof module.

As an example related to the present invention, the charge controller and the inverter may be integrally assembled and formed in the form of an explosion-proof module.

As an example related to the present invention, the motor may be a BI DC motor, and the generator may have a permanent magnet rotor.

In one embodiment of the present invention, the generator may be a generator of a cogging free type.

In one embodiment of the present invention, the power supply apparatus may further include an external interface configured to connect the controller to the controller in a wired or wireless manner to control the state of the power supply unit.

As an example related to the present invention, the housing may be formed in the form of a container having a standard for freight transportation.

According to the power supply apparatus of the present invention, since the housing is provided with the power supply unit, the battery, the charge controller, the inverter, the motor, the motor controller, the transmission gear unit, the generator, the breaker, So that it is possible to easily generate the power generation energy regardless of the place. At this time, the power supply device is useful as a temporary abnormality or a temporary energy substitution of a commercial power source used in a home or a variety of industrial fields as a load device. The battery, which is the base energy, causes the motor and transmission gear unit to start, and the electric energy is supplied stably to the receiving load device through the generator. According to an embodiment of the present invention, the temperature inside the housing is maintained at a predetermined level by the cooling unit operated by the output power of the generator, thereby providing stability of the device and power supply. Further, the housing can be configured in the form of a container having a standard for freight transportation, thereby improving mobility and handling.

According to an embodiment of the present invention, the generator is configured as a cogging-free type having permanent magnet rotors, thereby reducing the power for starting the generator and realizing a highly efficient power generation type power supply apparatus.

According to another embodiment of the present invention, an external interface capable of connecting a controller to an external device by wire or wireless can be provided, so that control or power monitoring can be performed remotely through a smartphone or a computer.

According to another embodiment of the present invention, the controller or the charge controller and the inverter are formed in the form of an explosion-proof module, so that the replacement is easy and the risk of a safety accident due to fire or the like can be minimized.

According to another embodiment of the present invention, the life of the battery can be increased by connecting the solar generator to the charge controller.

FIG. 1 is a schematic perspective view showing the appearance of a power supply apparatus according to an example of the present invention.
Figure 2 is a top view of the power supply of Figure 1;
3 is a circuit diagram of a power supply device according to an example related to the present invention.

Hereinafter, a power supply apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view showing the appearance of a power supply apparatus 100 according to an example of the present invention. As shown in FIG. 1, the power supply apparatus 100 according to the present invention has a housing 110 in which various components are mounted. The housing 110 may be in the form of a movable, container type having a standard for cargo transportation. The housing 110 is made of steel or an alloy material having excellent rigidity and impact resistance, and can have a fork groove or a ring to facilitate lifting by a forklift or lifting by a crane. A door 115 may be provided at one side of the housing 110 to allow an operator or a manager to move in or out.

Figure 2 is a schematic top view of the power supply of Figure 1; Referring to FIG. 2, the power supply 100 includes a battery 120, a motor 130, a transmission gear unit 140, a generator 150, a first cooling unit 161, A cooling section 162, a power control section 181, a power monitoring section 182, and an external lead-out terminal 190 are provided.

The battery 120 may be a rechargeable battery such as a lead-acid battery. The plurality of batteries may be connected in series to supply the voltage required for the specifications of the motor 130 or may be connected in parallel for stability. 2 shows that the battery 120 is provided with the first battery module 121 and the second battery module 122.

The electric energy provided from the battery 120 drives the motor 130 and the rotation of the output shaft of the motor 130 is reduced by the transmission gear unit 140 instead of increasing the torque. The generator 150 is configured to be operated by the transmission gear unit 140 to supply rated power to the load device.

The motor 130 may be a BLDC (Brushless DC) motor that does not require a commutator and is reliable and durable. Accordingly, since the permanent magnet, which is an energy source, is included in the rotor constituting the motor 130, the motor efficiency is high and the speed control according to the load variation can be easily performed through the voltage control by the inverter 127 have.

The transmission gear unit 140 increases the torque instead of decelerating the high-speed rotation of the output shaft of the motor 130 to provide the rated speed required by the generator 150. [ The transmission gear unit 140 may have a gear or a reduction gear for changing the rotation speed of the motor 130. [

The first cooling unit 161 and the second cooling unit 162 suppress the increase of the internal temperature due to heat generation of various components in the housing 110 and maintain a constant temperature.

The power supply 100 related to the present invention may have a control element such as a power control section 181, a power monitoring section 182 and an automatic control section 183. [ These control elements 181, 182, and 183 may be operated to be interconnected and controlled in unison.

The electric energy produced through the generator 150 can be supplied to the load device outside the housing 110 through the external lead-out terminal 190 and supplied.

3 is a circuit diagram of a power supply device according to an example related to the present invention.

The battery 120 may be in the form of a voltage of 12 V and a charging current of 100 Ah. The first battery module 121 and the second battery module 122 constituting the battery 120 are connected to each other in parallel and connected to the charge controller 126. The charging controller 126 serves to regulate a power source for charging the battery 120, and converts the electricity generated from the generator 150 to a power source for charging, as described later. Also, the charge controller 126 may be configured to charge the battery 120 by being connected to a separate power source. Such a separate power source may be a photovoltaic power, a commercial power source or a preliminary charging power source.

The inverter 127 converts the power supplied to the VDD type motor 130. The inverter 127 and the charge controller 126 supply necessary power to the motor 130 or convert it into power for charging the battery 120 under the control of the controller 185. The charge controller 126 and the inverter 127 may be formed as an explosion-proof module type 125.

A motor controller 135 is connected to the front end of the motor 130 for controlling the motor 130. The motor controller 135 controls the operation of the motor 130 for supplying the torque and the rotation speed required by the generator 150 under the control of the controller 185. [ To this end, the motor controller 135 receives the rotational speed and the torque value of the transmission gear unit 140 in addition to the controller 185, and controls the operation of the motor 130. Since the rotational energy of the motor 130 does not reach the rated power of the load device at the initial startup, the controller 185 is configured to determine whether to switch the power supply by receiving a control signal from the motor controller 135.

The generator 150 may be configured to generate, for example, a 380V 10 kWh power supply of three phases. The generator 150 is connected to the circuit breaker 195. One end of the circuit breaker 195 is connected to the generator 150 and the other end thereof is connected to the load device to supply the rated load to the load device under the control of the controller 185 and automatically shut off when the load device is powered off. In addition, the circuit breaker 195 may be configured to block the circuit manually.

Generator 150 may be fabricated in a cogging-free form with a permanent magnet rotor. In order to use a permanent magnet rotor, a permanent magnet having a high magnet density should be used, and an air gap should be minimized in the case of a low-speed generator, which has a disadvantage because it affects cogging torque. For this purpose, the thicker the magnet is, the higher the density of the magnet, while minimizing the air gap and reducing the cogging torque. The generator 150 used in the power supply 100 related to the present invention utilizes this cogging torque minimized.

A part of the output electricity of the generator 150 may be used as a power source of the cooling unit 160 or a charging power source of the battery 120. [ For this purpose, a transformer 171 for lowering the output voltage of the generator 150 may be disposed at the output terminal of the generator 150.

The cooling unit 160 is configured to maintain the temperature in the housing 110 when the temperature inside the housing 110 is equal to or higher than the reference temperature under the control of the controller 185. The cooling unit 160 may also be configured to be driven by electrical energy generated by the generator 150.

A first switch 175 is provided between the output terminal of the generator 150 and the transformer 171 to connect or disconnect the circuit under the control of the controller 185. The output terminal of the transformer 171 and the charge controller 126 A second switch 176 formed to connect or disconnect the circuit under the control of the controller 185 may be provided. The first switch 175 and the second switch 176 may be implemented by a magnetic switch. The controller 185 controls the breaker 195, the first switch 175, or the second switch 176 to turn on and off the switch required for power generation.

The controller 185 is connected to the charge controller 126, the inverter 127, the motor controller 135, the breaker 195, the first switch 175, the second switch 176, the cooling unit 160, Controls the operation or state of the parts. The controller 185 may be implemented by a PLC (Programmable Logic Controller).

The controller 185 includes a voltmeter 187 and an ammeter 188 for sensing the voltage and current for each phase of the output power of the generator 150 and a voltage meter 188 for reading the voltage and current of the charge controller 126 And may be integrally assembled with the meter 186 and configured in the form of an explosion-proof module. Accordingly, it is easy to maintain or check, and it is possible to suppress fire and minimize safety accidents so as to be prepared for an emergency.

The power supply apparatus 100 according to the present invention may include an external interface (not shown) configured to be connected to the controller 185 in a wired and wireless manner to control the state of each component constituting the power supply unit. Accordingly, it is possible to control or monitor the power remotely through a smartphone or a computer, so that it is easy to manage and operate from the user's point of view.

The power supply device as described above is not limited to the configuration and operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: power supply 110: housing
120: battery 121: first battery module
122: second battery module 126: charge controller
127: inverter 130: motor
135: motor controller 140: transmission gear unit
150: generator 160: cooling unit
161: first cooling section 162: second cooling section
171: Transformer 175: First switch
176: Second switch 180: Explosion-proof controller module
181: Power control unit 182: Power monitoring unit
183: Automatic control unit 185: Controller
187: Voltmeter 188: Amps
190: Outgoing terminal 195: Circuit breaker

Claims (12)

A housing formed in a movable form; And
And a power supply unit installed in the housing and configured to supply power to the load device,
Rechargeable battery;
A charging controller connected to the battery and controlling the charging power of the battery and additionally connected to at least one of an external commercial power supply, a solar power generation power supply, and a charging power supply;
An inverter connected to the charge controller and converting power of the battery;
A motor operated by the power supply of the inverter;
A motor controller configured to control the input power of the motor between the motor and the inverter;
A transmission gear unit connected to the output shaft of the motor, for reducing a rotational speed of the output shaft and increasing torque;
A generator connected to the transmission gear unit and configured to supply a rated power to the load device;
A breaker connected to the generator at one end and connected to the load device to supply the rated load to the load device,
A transformer connected to an output terminal of the generator to convert the output voltage of the generator and supply the converted output voltage to the charge controller;
A controller connected to at least the inverter, the motor controller, and the breaker, the controller being configured to control a speed of the motor, an operation of the breaker according to a state of the load device, and a charge state of the battery;
A cooling unit which is disposed at an output terminal of the transformer and is driven by electric energy generated by the generator and is capable of maintaining the temperature in the housing when the temperature inside the housing is higher than a reference temperature under the control of the controller;
A first switch provided between the output terminal of the generator and the transformer and configured to connect or disconnect the circuit under the control of the controller;
A second switch disposed between the output terminal of the transformer and the charge controller and configured to connect or disconnect the circuit under the control of the controller; And
And a voltmeter and an ammeter configured to sense a voltage and a current for each phase (phase) of an output power of the generator,
Wherein the controller is integrally assembled with the boltmeter and the ammeter to form an explosion-proof module,
Wherein the charge controller and the inverter are integrally assembled to form an explosion-proof module,
Wherein the motor is a BI DS motor and the generator is a cogging free type having a permanent magnet rotor.
delete delete delete delete delete delete delete delete delete The method according to claim 1,
Further comprising: an external interface configured to connect to the controller in a wired and wireless manner to control the state of the power supply.
The method according to claim 1,
Wherein the housing is formed in the form of a container having a standard for cargo transportation.

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