KR102620458B1 - Battery charging/discharging system to improve flight time of unmanned aerial vehicles - Google Patents

Abstract

The present invention proposes a battery charging and discharging system for an unmanned aerial vehicle to increase the flight time of an unmanned aerial vehicle by improving the charging and discharging efficiency of the battery. The battery charging and discharging system for an unmanned flying vehicle of the present invention includes a charging device for charging battery cells for an unmanned flying vehicle and a discharging device for discharging battery power from the battery cells when the unmanned flying vehicle is flying. Here, the charging device includes a charging unit that charges the battery cells using a pulse charging method, and a cell balancer that performs cell balancing of the battery cells in a passive method. The discharge device includes a plurality of super capacitors connected in parallel with the battery cells to charge and discharge in a duty manner, and a voltage balancer that actively balances the voltage of the super capacitors. Through improvements in the charging/discharging operation of the charging device and discharging device, the present invention improves the flight time of the unmanned aircraft by about 30% even with a battery of the same capacity as the conventional one.

Description

Battery charging/discharging system to improve flight time of unmanned aerial vehicles}

The present invention relates to a battery charging and discharging system for improving the flight time of an unmanned aircraft by improving the charging function of the battery for an unmanned aircraft and increasing the flight time of the unmanned aircraft through an effective discharge function of limited battery capacity.

The unmanned aircraft described in this specification are various devices driven using the charging power of a battery, and may include, for example, an unmanned aerial vehicle (UAV), an unmanned multicopter, and an unmanned aerial vehicle. This embodiment, which will be described below, A drone is used as an example. Therefore, it will be natural that the unmanned flying vehicle of the present invention does not only refer to the drone described in this embodiment but can be applied to various types of flying vehicles.

Drones use engines or motor devices as power for flight, but most use motors as power for various reasons such as control and management. And high-discharge/high-efficiency batteries such as lithium polymer are used as a power source for driving motors. These batteries are used in the form of a battery pack in which two or more unit cells (battery cells) are modularized, and each battery cell is connected in series for high voltage.

However, the output efficiency of the battery installed in the drone is still difficult to provide sufficient flight time. If sufficient flight time is not secured, work using drones will inevitably be restricted. Of course, there is also a way to install a larger capacity battery to increase the flight time of the drone, but in this case, since the overall weight of the drone increases, the battery capacity that can be installed is inevitably limited, and if the drone's weight increases, the drone's flight time will increase. It is not efficient because it consumes more energy.

Drones are often used to perform a series of tasks in places that are difficult or inaccessible to workers. For example, it can be used for painting work inside the stack (chimney) of a thermal power plant or cogeneration power plant, or the inside of a nuclear power plant dome.

However, as mentioned earlier, if the drone's flight time is short, there is not enough time to actually work, and work efficiency is inefficient. Also, if the drone takes off and lands frequently due to such a short flight time, the possibility of a drone crash or safety accident will inevitably increase.

For this reason, the demand to increase the flight time of drones continues, but it has not yet been possible to secure sufficient flight time by improving the performance of the limited capacity batteries.

Korean Patent No. 10-1704500 (2017. 02. 02)

The purpose of the present invention is to provide a battery charging and discharging system for an unmanned aerial vehicle that improves the flight time of an unmanned aerial vehicle with only a limited battery capacity.

Another object of the present invention is to provide a battery charging and discharging system for an unmanned aerial vehicle to secure a longer flight time than before, taking into account various factors such as battery charging method and battery discharge speed for the unmanned aerial vehicle.

Another object of the present invention is to provide a battery charging and discharging system that improves the flight time of an unmanned aerial vehicle by providing the same function as increasing battery capacity by improving the power density of the battery.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

To achieve this purpose, a battery charging and discharging system for improving the flight time of an unmanned aircraft according to an embodiment of the present invention includes a charging device for charging battery cells for an unmanned aircraft, and a charging device that charges battery cells from the battery cells when the unmanned aircraft flies. It includes a discharge device that discharges battery power, and the charging device includes: a charging unit that charges the battery cells using a pulse charging method; and a cell balancer that performs cell balancing of the battery cells in a first method, wherein the discharge device includes a plurality of super capacitors connected in parallel with the battery cells and charged and discharged in a duty manner; and a voltage balancer that performs voltage balancing of the super capacitor in a second manner.

The first method is a passive method, and the second method is an active method.

The charging unit charges the first section using a normal charging method based on the total capacity of the battery cell, and charges the second section using a pulse charging method after the charging of the first section is completed.

The first section is 80% capacity based on the total capacity of the battery cell, and the second section is the remaining 20% capacity. When the pulse charging method is completed, more than the total capacity of each battery cell is charged.

The charging device further includes an impedance equalizer that minimizes changes in internal impedance of the battery cells during a charging operation of the battery cells.

The discharging device includes a switching element connecting the battery cell and the super capacitor; and a surge protection circuit unit consisting of a pair of surge protection capacitors connected in parallel with the battery cell.

The battery charging and discharging system further includes a battery remaining amount monitor provided in the unmanned air vehicle to detect remaining amount information of the battery pack in the form of %, and a remaining amount display device that remotely receives and displays the remaining amount information of the battery pack, , a recovery command for the unmanned aerial vehicle is issued when the remaining charge of the battery pack is 5 to 15%.

A battery charging system for improving the flight time of an unmanned aerial vehicle according to another embodiment of the present invention includes a charging device for charging battery cells for an unmanned aerial vehicle, wherein the charging device uses a pulse charging method for the battery cells. A charging part that is charged with; and a cell balancer that performs cell balancing of the battery cells in a passive manner, wherein the cell balancer includes a first balancer and a second balancer that perform cell balancing by dividing the number of battery cells. It is characterized by

The charging unit charges up to 105% of the indicated standard or rating of the battery cell.

It further includes an impedance equalizer that minimizes changes in the internal impedance of the battery cells.

A battery discharge system for improving the flight time of an unmanned aircraft according to another embodiment of the present invention includes a discharge device for discharging the power of battery cells during flight of the unmanned aircraft, wherein the discharge device is configured to discharge power during the flight of the unmanned aircraft. Battery cells to supply the necessary power; Super capacitors connected in parallel with the battery cells; a switching element connecting the battery cell and the super capacitors; and a control unit that controls the on/off cycle of the switching element to selectively supply the battery cell power or the super capacitor power to a load.

It includes a voltage balancer that performs voltage balancing of the super capacitors in an active manner.

It further includes a surge protection circuit consisting of a pair of surge protection capacitors connected in parallel with the battery cell.

According to the present invention, the flight time of the unmanned aerial vehicle is increased by about 15% by combining a battery and a super capacitor to supply battery power and super capacitor power alternately through duty discharge. In addition, since the super capacitor shares the load of the battery to a certain level, not only does it increase efficiency, but it also allows the use of batteries with a lower discharge rate than before, which can also be expected to reduce battery weight and cost.

According to the present invention, the current consumption can be kept constant during the flight of the unmanned aircraft due to the combination of the battery and the super capacitor and the voltage balancing operation of the super capacitor, so the recovery time of the unmanned aircraft can be delayed, thereby securing more flight time. There is an effect that can be done. In other words, the recovery time of the remaining battery capacity can be delayed from the conventional 30% to 10%.

According to the present invention, in relation to charging the battery for an unmanned aerial vehicle, the battery is charged using a pulse method, so that it is possible to charge about 5% more than the battery capacity, and when charging the battery, the energy of each battery cell is maintained through passive cell balancing. Battery performance is being improved by performing cell balancing, which can also be expected to have the effect of relatively stably increasing the flight time of the unmanned aerial vehicle.

As such, the present invention improves the power density of the battery through a charging and discharging method, and has the effect of dramatically extending the flight time of the unmanned aerial vehicle compared to before, even taking into account the self-loss of the charging and discharging circuit.

Figure 1 is a configuration diagram of a battery charging and discharging system for improving the flight time of an unmanned aerial vehicle according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of the charging device shown in FIG. 1.
FIG. 3 is a configuration diagram of the discharge device shown in FIG. 1.
Figure 4 is a diagram illustrating the circuit configuration of a battery charging and discharging system according to an embodiment of the present invention.
Figure 5 is a diagram explaining the operation of a charging device to increase the flight time of an unmanned aircraft according to an embodiment of the present invention.
Figure 6 is a diagram explaining the operation of a discharge device to increase the flight time of an unmanned aerial vehicle according to an embodiment of the present invention.

Since the present invention can be modified in various ways and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

The terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Spatially relative terms such as below, beneath, lower, above, upper, etc. facilitate the correlation between one element or component and other elements or components as shown in the drawing. It can be used to describe. Spatially relative terms should be understood as terms that include different directions of the element during use or operation in addition to the direction shown in the drawings. For example, when an element shown in a drawing is turned over, an element described as below (below, beneath) another element may be placed above (upper) the other element. Accordingly, the illustrative term below may include both downward and upward directions. Elements can also be oriented in other directions, so spatially relative terms can be interpreted according to orientation.

As used in the present invention, expressions indicating a part such as “part” or “part” mean that the corresponding component is a device that can include a specific function, software that can include a specific function, or a device that can include a specific function. It means that it can represent a combination of and software, but it cannot be said that it is necessarily limited to the expressed functions. This is only provided to help a more general understanding of the present invention, and is provided to those with ordinary knowledge in the field to which the present invention pertains. Various modifications and variations are possible from this description.

In addition, it should be noted that all electrical signals used in the present invention are examples, and if an inverter or the like is additionally provided in the circuit of the present invention, the signs of all electrical signals to be described below may be reversed. Therefore, the scope of the present invention is not limited to the direction of the signal.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described below as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

The drone, which is an unmanned aircraft described in the present invention, may be a large-capacity drone with a capacity of at least tens to hundreds of kg, and the present invention reduces the flight time performance by approximately 30% through the charging and discharging operation of the battery mounted on such a large-capacity drone. The technical feature is to improve it to a certain degree.

Figure 1 is a configuration diagram of a battery charging and discharging system 1 for improving the flight time of an unmanned aerial vehicle according to an embodiment of the present invention. As shown in FIG. 1, the battery charging and discharging system 1 of the unmanned flying vehicle includes a drone main body 10, a discharging device 100, a charging device 200, and a battery pack 300.

The drone main body 10 is a device that flies for a series of tasks for a predetermined time using the power of the battery pack 300, and the charging device 200 is a device for charging the battery pack 300. In general, the drone main body 10 flies with the battery pack 300 installed, and the charging device 200 is configured to charge the battery pack 300 before and after flight. The drone main body 10 and the charging device ( 200) can be viewed as separate constructs. And the drone main body 10 includes components for flight, such as a discharge device 100 that supplies power necessary for drone flight in addition to a motor and a propeller, and a battery remaining amount monitoring unit 20 that monitors the remaining battery amount of the battery pack 300. ), a control unit 30, etc. are included.

In this embodiment, the battery pack 300 is a lithium polymer battery and consists of a total of 14 battery cells connected in series. Of course, the number of battery cells is not limited to this and may further increase or decrease depending on battery capacity, and may also vary depending on the number of motors for the drone.

According to this embodiment, it includes a remaining battery level display device 400 that is linked to the remaining battery level monitoring unit 20 of the drone main body 10. The remaining battery capacity display device 400 is installed on the ground so that the drone pilot can easily check the remaining battery capacity, and is a device that wirelessly transmits and displays the remaining battery information of the battery pack 300 mounted on the drone when the drone flies. In the embodiment, the remaining amount information of the battery pack 300 is displayed in % format. In this way, the remaining battery capacity can be displayed in % format, so drone pilots will be able to easily determine when to retrieve the drone.

According to the present invention, it is possible to substantially increase the flight time of the drone through the above-mentioned charging device 200 and discharging device 100, and the configuration of each charging device 200 and discharging device 100 will be examined. see.

FIG. 2 is a configuration diagram of the charging device shown in FIG. 1. The charging device 200 shown in FIG. 2 is a device that is connected to a part of the drone battery pack 300 to charge the battery pack, and is also called a charging platform, charging station, etc. This charging device 200 can be charged by mounting only the battery pack 300, or can be charged by combining the drone body 10 with the battery pack 300 mounted on the charging device. .

The charging device 200 of this embodiment is configured to include the following components to ensure efficient charging while maximizing the capacity of the battery cells of the battery pack 300. Specifically, as shown in FIG. 2, the charging device 200 includes a charger unit 210, an impedance-equalizer 220, and a cell balancer 230.

The charging unit 210 charges battery cells using a pulse charging method. The pulse charging method is a method for improving charging efficiency and charging time by providing voltage and current exceeding the maximum charging voltage and charging current of the battery cell in the form of pulses. Therefore, compared to the general CC-CV charging method for charging lithium-ion batteries, it has the advantage of shortening the charging time, minimizing internal impedance changes, and increasing charging efficiency.

In this embodiment, the pulse charging method is applied only to a certain section of the battery cell. Specifically, the first section of the battery cell (e.g., about 80% of a full charge) is charged using a general charging method such as the CC charging described above, and the second section (e.g., the remaining 20% of a full charge) is charged using a pulse charging method. do. By using this charging method, this embodiment can charge up to 105%, which is more than the 100% charging capacity of each battery cell (expected to improve charging performance by about 5% compared to the existing one), improving charging efficiency as well as charging time. It can be shortened.

The impedance equalizer 220 minimizes changes in internal impedance for each battery cell to prevent unbalance. In the case of battery cells, the internal impedance of each battery cell is different due to repetitive charge/discharge cycle operation, and in this case, the performance of the battery cells may deteriorate.

The cell balancer 230 is used to prevent unbalance of the battery cells constituting the battery pack 300 and to fully charge all battery cells. In the case of new battery cells that are newly manufactured and have not been used for a long time, there is not much variation between cells when looking at the state (SOH) of each battery cell, but after approximately 300 charge/discharge cycles, each battery cell Deviations appear. In this case, overloading of a specific battery cell can cause damage to the battery cell or cause a fire. Accordingly, the cell balancer 230 can be said to maintain the voltage deviation constant so that the voltage deviation of each battery cell does not occur even if the battery pack 300 ages due to repeated charging and discharging cycles.

In this embodiment, the cell balancer 230 of the charging device charges battery cells through a passive cell balancing method. Passive cell balancing is a method of consuming charge from cells with more charge until the voltage of all battery cells becomes the same by generating heat while consuming through resistance. Through this passive cell balancing, the battery cells (14) can be fully charged and the drone's flight time can be improved by about 5% compared to before.

Here, the cell balancer 230 may be composed of a first balancer 230a and a second balancer 230b. The first balancer 230a and the second balancer 230b divide the 14 battery cells into 7 each and perform cell balancing. This is because when cell balancing is performed on a total of 14 battery cells at once, voltage resolution deteriorates due to the increased voltage. Here, if the number of battery cells increases, the number of cell balancers may vary to maintain appropriate voltage resolution.

In this way, according to the charging device 200 of this embodiment, the battery cells are charged through the configuration of the pulse charging type charging unit 210 and the passive cell balancing type cell balancer 230, thereby charging the battery cells. Performance can be increased further than before. And this can be expected to have an improved effect of increasing the drone's flight time.

FIG. 3 is a configuration diagram of the discharge device 100 shown in FIG. 1. As mentioned above, the discharge device 100 according to this embodiment is configured in the drone main body 10. And by efficiently controlling the discharge rate of the battery cells through the discharge device 100, the flight time of the drone is extended.

The discharge device 100 includes a surge protection circuit unit 110 connected to the output terminal of the battery pack 300, and a super capacitor module 120 connected in parallel with the battery pack 300. In this embodiment, the super capacitor module 120 refers to a configuration in which a plurality of super capacitors with large capacities are connected, and a total of 22 super capacitors are connected in series. However, the number of super capacitors constituting the super capacitor module 120 is not limited to this. The number of devices connected in series can vary depending on the capacity of the super capacitor or the voltage of the drone battery.

Additionally, the discharge device 100 includes a switching element 140 that connects the battery pack 300 and the super capacitor module 120. The on/off operation of the switching element 140 is performed by the control unit 30. The switching element 140 is preferably connected between the - terminal of the battery pack 300 and the - terminal of the super capacitor 120, but conversely, it may be connected to a path between the + terminal.

According to this embodiment, a duty discharge method is applied to the discharge device to extend the flight time of the drone. Duty discharge may be performed through cooperation between the battery pack 300, the super capacitor module 120, the switching element 140, and the control unit 30. Specifically, the control unit 30 controls the switching element 140 to operate on/off at a predetermined cycle. For example, the switching element 140 is turned on for 1 second (connected state), and the switching element 140 is turned off for the next 1 second (blocked state).

While the drone is flying, when the switching element 140 is connected, the charging current of the battery pack 300 charges the super capacitors of the super capacitor module 120 and is also supplied to the load (motor). Accordingly, the drone can fly normally thanks to the motor drive. And when the switching element 140 is blocked, only the charging power charged in the super capacitors of the super capacitor module 120 is supplied to the motor to drive the motor.

In this way, the power required to drive the motor can be stably supplied through duty discharge using the battery pack 300 and the super capacitor module 120 connected in parallel with the battery pack 300. Compared to supplying power only by the battery pack 300 without the configuration of the super capacitors, the flight time can be increased by about 15%.

Meanwhile, the discharge device 100 includes a voltage balancer 130 for balancing the voltage of super capacitors. At this time, the voltage balancing operation of the super capacitors is performed in an active manner. There is a difference from the cell balance method of the charging device 200. The reason for cell balancing of super capacitors using the active method is to further improve the charging performance of super capacitors so that the drone is stable and can fly for a longer period of time. Active balancing is a method of transferring charge from high voltage cells to low voltage cells. Cell balance of each super capacitor of the active type is performed.

Meanwhile, according to the present invention, through the balancing operation of the voltage balancer 130, it is possible to delay the recovery time of the drone by about 10% of the battery capacity in this embodiment.

In other words, the recovery point for existing large-capacity drones was done when the remaining battery capacity was about 30%. In conventional drone operation, the running motor may require more current than usual due to external environments such as wind strength while the drone is flying, and at this time, a voltage drop in the battery voltage occurs. There was a problem that the drone in flight could crash if the voltage suddenly dropped like this, so the recovery time was set when the battery capacity remained at about 30% as much as possible so that the drone could land safely.

Previously, the reason the drone's recovery point was determined this way was because the current consumption was not constant. For this reason, the battery performance could not be fully utilized in the past, and the drone was recovered when the remaining battery capacity was about 30%, so the flight time of the drone was inevitably short compared to the battery capacity.

In response to this, in the present invention, the cell-balanced super capacitor module 120 can instead process the rapidly consumed voltage. That is, the super capacitor module 120 processes the load of the battery pack 300 to some extent. Therefore, current consumption is maintained at a constant level, ultimately preventing the problem of the drone falling due to a sudden drop in voltage.

And because the current consumption is constant, the battery capacity can be displayed as a % rather than the battery voltage as in the past as a way to check the time of recovery of the drone. And because the drone can be recovered when about 10% of the battery capacity remains, the flight time of the drone can be extended that much. The battery capacity monitor 20 transmits the remaining battery capacity to the remaining capacity display device 400, and the remaining capacity display device 400 displays it, so that the drone pilot can easily check it.

Additionally, the discharge device 100 includes a booster unit 150. The booster unit 150 is responsible for supplying a set voltage (for example, 48v) to drive the motor.

Figure 4 is a diagram illustrating the circuit configuration of a battery charging and discharging system according to an embodiment of the present invention.

Referring to FIG. 4, a charging device 200 is provided on the left side of the drawing, and a discharging device 100 is located on the right side of the drawing. The central battery pack 300 is electrically coupled to the charging device 200 when charging and to the discharging device 100 when the drone is flying.

Looking at the charging device 200, from the left, there is a pulse charging charging unit 210, an impedance equalizer 220 that minimizes the internal impedance of the battery cell, and a cell balancer 230 that charges the battery cells in a passive manner. Located. The cell balancer 230 is divided into a first balancer 230a and a second balancer 230b so that cell balancing can be performed on seven battery cells each.

The charging device 200 having this configuration improves the charging performance of the battery cell while maintaining the capacity of the charger as stably as possible. Looking at the results of a series of experiments, it was found that pulse charging could charge more than the battery cell capacity, extending the flight time by about 5%, and that the passive cell balancing operation also extended the flight time by about 5%. . Here, the experiment was compared with the case where the same battery cell was charged using a general charging method (e.g., CC-CV charging method).

Meanwhile, looking at the discharge device 100, a surge protection circuit unit 110 is connected in parallel with the battery pack 300 to prevent back electromotive force generated from the motor. The surge protection circuit unit 110 is composed of a pair of surge protection capacitors.

In addition, the discharge device 100 includes a voltage balancer 130 that is connected in parallel with the battery pack 300 and actively performs voltage balancing of the super capacitors, and a super capacitor to selectively supply power to the motor by battery cells and duty discharge. The super capacitor module 120, in which capacitors are connected, and the booster unit 150, which supplies a constant driving voltage to the motor, are connected in that order.

The discharge device 100 with this configuration was able to extend the flight time by up to 15% by duty discharge using the battery pack 300 and the super capacitor 120, and the time of recovery of the drone was determined by the battery cell capacity. By allowing recovery at the 10% point, it was also possible to extend the flight time.

As described above, the charging and discharging system including the charging and discharging device of the present invention is designed to extend the flight time of the drone, and can be summarized as a whole as shown in Figures 5 and 6 below. Figure 5 is a diagram illustrating the operation of a charging device for increasing the flight time of an unmanned aircraft according to an embodiment of the present invention, and Figure 6 is a discharging device for increasing the flight time of an unmanned aircraft according to an embodiment of the present invention. This is a diagram explaining the operation of .

As shown in FIG. 5, according to the present invention, when charging battery cells, the charging performance of the battery cells is improved through a pulse charging method for the battery cells, minimizing changes in the internal impedance of the battery cells, and passive cell balancing. did.

As shown in Figure 6, according to the present invention, when the power of the battery cell is used according to the drone flight, duty discharge using the battery cell and the super capacitor is performed, and voltage balancing of the super capacitor is performed in an active manner to discharge the battery cell. Speed has been improved.

In this way, the present invention makes it possible to extend the flight time of the drone by approximately 30% or more than before by improving the performance of the charging and discharging system. For example, using a battery pack with 14 battery cells can provide an additional flight time of about 6 minutes, considering that the current flight time of large-capacity drones is about 20 minutes. Therefore, not only can the drone's working time be extended, but the number of takeoffs and landings can be further minimized, preventing problems such as power consumption and drone damage due to frequent takeoffs and landings.

As described above, the present invention is described with reference to the illustrated embodiments, but these are merely illustrative examples, and those of ordinary skill in the art to which the present invention pertains can make various modifications without departing from the gist and scope of the present invention. It will be apparent that variations, modifications, and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached claims.

1: Charging/discharging system of the present invention
10: Drone body
20: Battery level monitoring unit
30: control unit
100: Discharge device
110: surge protection circuit part
120: super capacitor
130: voltage balancer
140: switching element
150: Booster unit
200: Charging device
210: Charging unit
220: Impedance equalizer
230: Cell balancer
300: Battery pack
400: Remaining amount display device

Claims (13)

It includes a charging device for charging battery cells for an unmanned aircraft and a discharge device for discharging battery power from the battery cells during flight of the unmanned aircraft,
The charging device is,
A charging unit that charges the battery cells using a pulse charging method; and
Comprising a cell balancer that performs cell balancing of the battery cells in a first method,
The charging part,
Based on the total capacity of the battery cell, the first section is charged using the general charging method, and after the charging of the first section is completed, the second section is sequentially charged using the pulse charging method. When the pulse charging method is completed, each battery Charges more than the total capacity of the cell,
The discharge device is,
A plurality of super capacitors connected in parallel with the battery cells and charged and discharged in a duty manner;
a switching element connecting the battery cell and the super capacitors; and
It includes a voltage balancer that performs voltage balancing of the super capacitor in a second manner,
When the switching element is turned on, the charging current of the battery pack is supplied to the load while charging the super capacitors, and when the switching element is turned off, only the charging power charged in the super capacitor is supplied to the load. , Battery charging and discharging system for unmanned aerial vehicles. According to claim 1,
The first method is a passive method,
The second method is an active method, a battery charging and discharging system for an unmanned aircraft. delete According to claim 1,
The first section has 80% capacity based on the total capacity of the battery cell, and the second section has the remaining 20% capacity. According to claim 1,
The charging device is,
A battery charging and discharging system for an unmanned aerial vehicle, further comprising an impedance equalizer that minimizes changes in internal impedance of the battery cells during a charging operation of the battery cells. According to claim 1,
The discharge device is,
A battery charging and discharging system for an unmanned aerial vehicle, further comprising a surge protection circuit unit consisting of a pair of surge protection capacitors connected in parallel with the battery cell. According to claim 1,
A battery remaining amount monitoring unit provided in the unmanned air vehicle to detect remaining amount information of the battery pack in % form; and
It further includes a remaining power display device that remotely receives and displays remaining power information of the battery pack,
A battery charging and discharging system for an unmanned aerial vehicle, in which a command to retrieve the unmanned aerial vehicle is issued when the remaining charge of the battery pack is 5 to 15%. It is a charging device that charges battery cells for unmanned aerial vehicles,
The charging device is,
Based on the total capacity of the battery cell, the first section is charged using the general charging method, and after the general charging method of the first section is completed, the second section is sequentially charged using the pulse charging method, and the general charging method is performed. a charging unit that charges more than the total capacity of each battery cell when the pulse charging method is completed; and
It is configured to include a cell balancer that performs cell balancing of the battery cells in a passive manner,
The cell balancer is a battery charging device for an unmanned aerial vehicle, characterized in that it includes a first balancer and a second balancer that divides the number of battery cells. According to claim 8,
The charging part,
A battery charging device for an unmanned aerial vehicle that charges the battery cell to 105% of the indicated standard or rating. According to claim 8,
A battery charging device for an unmanned aerial vehicle, further comprising an impedance equalizer that minimizes changes in internal impedance of the battery cells. It is a discharge device that discharges the power of battery cells during the flight of an unmanned aircraft.
The discharge device is,
Battery cells for supplying power necessary for flight of the unmanned aerial vehicle;
Super capacitors connected in parallel with the battery cells;
a switching element connecting the battery cells and the super capacitors; and
It is configured to include a control unit that controls the on/off cycle of the switching element to selectively supply power of the battery cells or power of the super capacitors to the load,
When the switching element is turned on, the control unit supplies the charging current of the battery pack to the load while charging the super capacitors, and when the switching element is turned off, it supplies only the charging power charged in the super capacitor to the load. A battery discharge device for an unmanned aerial vehicle. According to claim 11,
A battery discharge device for an unmanned aerial vehicle, including a voltage balancer that performs voltage balancing of the super capacitors in an active manner. According to claim 11,
A battery discharge device for an unmanned aerial vehicle, further comprising a surge protection circuit unit consisting of a pair of surge protection capacitors connected in parallel with the battery cell.

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