KR20160118772A - a propulsion apparatus and a ship including the same - Google Patents

Abstract

A ship including a battery is provided. Ship is power system; One or more remote large capacity batteries connected to the power system through a first charging cable and discharged to receive electricity from the power system to charge or supply power to the power grid; And at least one thruster directly connected to the at least one remote large capacity battery through a direct connection cable, wherein a permissible current capacity of the direct connection cable is larger than that of the first charge cable.

Description

A propulsion apparatus and a ship including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ship including a propulsion device mill, and more particularly to a propulsion device including a large capacity battery and a ship including the propulsion device.

Rechargeable secondary battery technology is advancing, and its size is decreasing with capacity. Currently, a secondary battery capable of storing and supplying a large amount of electric power is called an energy storage system (ESS) and commercialization is attempted as an auxiliary power supply for a power operation system.

Korean Patent Publication No. 10-2013-0141766 (Feb.

As an auxiliary power supply for the ship's power system, it may be attempted to place an energy storage system (ESS) on board the ship, which includes a large capacity battery. A large capacity battery having a capacity large enough to ensure effectiveness takes a correspondingly large volume. However, a large capacity battery has a limited use life and a limited number of chargeable times, which is relatively short compared with the service life of the ship. Therefore, in order to provide an energy storage system including a large-capacity battery as an auxiliary power source to a ship, it is necessary to search for an efficient arrangement of a large-capacity battery scheduled for replacement cycle.

Also, there is a need for an optimal electrical cable connection scheme for a high capacity load, such as a thruster in a ship, corresponding to the location of the deployed large capacity battery.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a ship including a large-capacity battery to which an optimal electric cable connection method for a high-capacity load such as a thruster in a ship is applied.

Another problem to be solved by the present invention is to provide a vessel including an efficiently arranged large capacity battery.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a propulsion device comprising: a battery for receiving and storing electric power through a first charge cable; And

And a propeller directly connected to the battery through a direct connection cable,

The allowable current capacity of the direct connection cable is larger than the allowable current capacity of the first charge cable.

According to another aspect of the present invention, there is provided a ship including: a power system; One or more remote large capacity batteries connected to the power system through a first charging cable and discharged to receive electricity from the power system to charge or supply power to the power grid; And at least one thruster directly connected to the at least one remote large capacity battery through a direct connection cable, wherein a permissible current capacity of the direct connection cable is larger than that of the first charge cable.

It further includes one or more storage rooms each accommodating one or more remote large capacity batteries.

Further, the storage room includes an inner wall surrounding the inside of the storage room, and the inner wall is formed of a buffer member.

The at least one remote large capacity battery further includes an ISO container, and at least one charging cell disposed within the ISO container.

The at least one charging cell is a lithium ion battery or a supercapacitor.

On the other hand, the one or more remote large capacity batteries are respectively disposed on top of one or more thruster connected to the one or more remote large capacity batteries.

The system further includes a short-range high capacity battery connected to the power system via a second charge cable, wherein the short range high capacity battery is disposed closer to the power system than the one or more long distant high capacity batteries.

Meanwhile, the power system includes a power grid; A plurality of generators coupled to the power grid and supplying electricity to the power grid; One or more load elements connected to the power grid; And a controller for controlling whether or not the plurality of generators are operating and operating, and for controlling whether the remote large capacity battery is charged or discharged, and the first charging cable is connected to the power grid of the power system.

The system of claim 1, further comprising a short-range high capacity battery connected to the power grid of the power system via a second charge cable, wherein the short range high capacity battery is disposed closer to the power system than the one or more long distant capacity batteries.

Other specific details of the invention are included in the detailed description and drawings.

1 is an exemplary block diagram of a ship equipped with a large-capacity battery according to an embodiment of the present invention.
2 is a block diagram of a power system of a ship in accordance with an embodiment of the present invention.
3 is a perspective view showing an example of a charging cell of a large-capacity battery according to an embodiment of the present invention.
4 is an exploded perspective view showing an exemplary configuration of one battery pack of Fig.
5 is a perspective view showing an example of an ISO container type mass storage device including an exemplary charge cell configured with the tower type battery rack shown in FIG.
6 is a cross-sectional view schematically showing a state in which an ISO container type large capacity battery according to an embodiment of the present invention is mounted.
Figure 7 is a graph illustratively illustrating variations in load over time in an exemplary navigation schedule of a ship in accordance with one embodiment of the present invention.
FIG. 8 is an exemplary diagram illustrating that the controller 22 of the ship according to an embodiment of the present invention sets the charging period with reference to the navigation schedule according to FIG.
9 is a view showing a container line according to an embodiment of the present invention.
10 is a view showing an LNG line according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exemplary block diagram of a ship equipped with a large-capacity battery according to an embodiment of the present invention.

1, a ship 1 equipped with a large capacity battery according to an embodiment of the present invention includes a power system 20, at least one remote large capacity battery FB1, FB2, FB3 connected to the power system 20, ), One or more thruster (BT, AT1, AT2) directly connected to one or more remote large capacity batteries FB1, FB2, FB3.

The power system 20 may correspond to a power operation system in which various load elements used in the ship and generators that generate power are connected through the power grid 21. [ Exemplary configurations of the power system 20 will be described below with reference to FIG.

The remote large capacity batteries FB1, FB2, and FB3 may be connected to the power system 20 through the first charging cable CC1. The remote large-capacity battery can be charged with electric power supplied from the power system 20. The remote large capacity battery can be mounted and accommodated in the storage room 12, 14, 16 of the vessel.

The storage room 12, 14, 16 is a space for mounting and accommodating the remote large capacity battery from above the vessel, and may be a surface of the vessel, for example, a space in which the deck of the vessel is settled inward.

1, the remote large capacity battery is illustrated as including a first remote large capacity battery FB1, a second remote large capacity battery FB2, and a third remote large capacity battery FB, The storage room 12, the second storage room 12, and the third storage room 12, as shown in FIG.

The first remote large capacity battery FB1, the second remote large capacity battery FB2 and the third remote large capacity battery FB are connected to the first direct connection cable DCC1, the second direct connection cable DCC2, Can be directly connected to the bow thruster (BT), the first azimuth thruster (AT1) and the second azumuth thruster (AT2) via the cable DCC3.

As used herein, "direct connection" means that two configurations are directly connected through one cable to form one node between them, and that no other configuration is connected to that one node it means.

That is, in one embodiment of the present invention, the bow thruster BT, the first azimuth thruster AT1, and the second azimuth thruster AT2 are respectively connected to the first remote large capacity battery FB1, But can be operated by receiving power from the large capacity battery FB2 and the third long distance large capacity battery FB. However, in another embodiment of the present invention, each of the thruster units may be connected to the power system in parallel They may be connected to receive additional power. In other words, each of the thruster may include an additional connecting cable (not shown) for connecting each of the large capacity batteries and the power system, in addition to a direct connecting cable directly connected to the large capacity batteries, (Not shown) to provide additional connection cables.

The first remote large capacity battery FB1, the second remote large capacity battery FB2 and the third remote large capacity battery FB are respectively connected to the bow thruster BT, the first azimuth thruster AT1 and the second azimuth thruster AT1, For example, a bow thruster (BT), a first azimuth thruster (AT1) and a second azimuth thruster (AT1) The azimuth thruster AT2 may be disposed in the storage room 12, 14, 16 formed on the upper deck, respectively.

In general ship operation, each of the thruster tends to consume a large amount of power for a relatively short period of time. Accordingly, a cable that supplies power to each of the thruster cables having a high allowable current must be selected. However, since the power system 20 of the ship including the generator is generally located at the stern portion of the ship, the high capacity cable connecting each of the thruster and the power system 20 of the ship is a cause of the cost increase of the ship .

On the other hand, in the present invention, each of the remote large capacity batteries FB1, FB2, FB3 can be disposed relatively close to the respective thruster. Accordingly, the first direct connection cable The second direct connection cable DCC1, the second direct connection cable DCC2, and the third direct connection cable DCC3 may have a relatively short length while having a high allowable current capacity.

Each remote large capacity battery can also be connected to the power system 20 via the first charging cable CC1 and can be charged by receiving power from the power system 20 via the first charging cable CC1 .

The first direct connection cable DCC1, the second direct connection cable DCC2 and the third direct connection cable DCC3 may have a larger allowable current capacity than the first charge cable CC1.

That is, the first charging cable CC1 can be arranged long along the longitudinal direction of the ship to be connected to the remote large-capacity battery located relatively far from the power system 20, .

The charging of the first remote large capacity battery FB1, the second remote large capacity battery FB2 and the third remote large capacity battery FB can be carried out with a relatively small current unit Will be charged for a period of time.

That is, in the present invention, the thruster consuming high power for a relatively short period of time is connected to the remote large capacity batteries disposed nearby and direct connection cables having a high allowable current capacity, and charging from the first charging cable , And a relatively large charge period (a period during which the thruster is not operated), thereby charging the large capacity batteries of a long distance with a low current capacity.

In addition, the ship according to an embodiment of the present invention may further include a near-site large capacity battery NB connected to the power system 20 of the ship by a second charge cable CC2.

The near-site large capacity battery can be mounted in a storage room 18 formed relatively close to the power system 20 and can be used as auxiliary power supply means for various loads connected to the power system 20 of the ship.

2 is a block diagram of a power system of a ship in accordance with an embodiment of the present invention.

Referring to Figure 2, a ship's power system 20 in accordance with an embodiment of the present invention includes a power grid 21, one or more generators 24 connected to a power grid 21, A large number of batteries, a plurality of load elements L_A connected to the power grid 21, and a controller 22.

The power grid 21 may correspond to one or more electrical nodes that flow through the in-ship power system 20. The power grid 21 may refer to a collection or network of one or more electrical cables capable of forming one or more electrical nodes to provide power to the load elements.

In the embodiment shown in FIG. 2, the power grid 21 is illustrated as forming an AC grid with an AC voltage applied thereto. However, the present invention is not limited thereto, and the power grid 21 may form, for example, a DC grid to which a DC voltage is applied.

A plurality of generators may be connected to the power grid 21 and supply electricity to the power grid 21. [ The plurality of generators may be composed of, for example, diesel generators capable of generating large capacity electric power of 200 KW or more. Each generator can generate an AC voltage having a specific voltage level and frequency, and can be self-regulated to maintain that particular voltage level and frequency. For example, the diesel generator may self-regulate the amount of fuel consumed to provide an AC voltage of 440 V and 60 Hz, thereby maintaining the voltage and frequency at 440 V and 60 Hz provided to the power grid 21 .

The ship's internal load elements L_A can be connected to the power grid 21 and can be powered from the power grid 21 to perform the corresponding functions of the load elements.

If the load elements consume a lot of power and the load of the power grid 21 rises, the AC voltage amplitude of the power grid 21 may become smaller or the frequency of the AC voltage of the power grid 21 may decrease. In this case, it can be interpreted that the load of the power grid 21 is increased, and a plurality of generators can be adjusted to provide an operating load corresponding to the increased load. Specifically, when the load on the power grid 21 is increased, the plurality of generators can increase the amount of fuel consumed, thereby adjusting the amplitude and frequency of the AC voltage to a certain level and frequency, e.g., 440 V and 60 Hz It is possible to increase the movable load provided to the power grid 21. [

In addition, the plurality of generators can receive the generator control signal from the outside, and in response to the received generator control signal, adjust the operating load corresponding to the amount of power that the plurality of generators produce and supply to the power grid 21 .

That is, in one embodiment of the present invention, the plurality of generators may operate in an external regulating manner to adjust the operating load of the generator according to the generator control signal provided from the controller 22, The amount of power load generated independently of the voltage fluctuation can be maintained in an externally adjustable manner.

The plurality of load elements in the ship may be various application devices and mechanisms that perform the functions by connecting to the in-vessel power system 20. [ The plurality of load elements may be connected to the power grid 21 via a transformer and the transformer may reduce or boost the voltage of the power grid 21 of, for example, 440V to the operating voltage of each load element, As shown in FIG.

In one embodiment of the present invention, a plurality of load elements means an in-vessel device / mechanism load L_A, and a plurality of thruster BTs AT1 and AT2 are referred to as separate structures.

The onboard instrument / instrument load (L_A) may be a conventional instrument / instrument operated using electricity in a ship, for example, a control system, household appliances, lighting, and the like.

The thrusters (BT, AT1, AT2) may be a combination of an electric motor and a screw, which provide auxiliary thrust in addition to the main propeller for the ship, and the bow thruster (BT) The first azimuth thruster (AT1) and the second azmuth thruster (AT2) can provide propulsive force all over the ship.

During the operation of the ship, the power consumed in the power system 20 in the ship may have an instantaneous fluctuation period that fluctuates greatly during an unspecific time period and fluctuates. In order to cope with such fluctuations in the momentary load applied to the power grid 21 in such a vessel, the plurality of generators in the vessel must have a sufficient margin of the load that can be supplied and, for example, In order to supply a load equal to or greater than the average load, one generator must have a sufficiently large power supply capability as compared with the average load, or the additional generator must maintain the power generation state at the minimum load.

For example, although the maximum load that can be supplied by the first generator is equal to or higher than the average load consumed in the ship, the second generator needs to maintain the standby state in order to cope with the power demand fluctuating during the unspecified time period. At this time, the second generator must maintain a power generation state that supplies a load relatively lower than its capacity, which may cause the fuel efficiency of the generator to be deteriorated.

The short-distance high capacity battery may be connected to the power grid 21 via a DC to AC transformer or an AC to DC transformer and a second charge cable and may serve as an auxiliary power supply for the in-ship power system 20. [ The short-distance high capacity battery may be supplied with power from the power grid 21 to charge or discharge the power grid 21.

The remote large capacity batteries FB1, FB2, FB3 may be connected to the power grid 21 via a DC to AC transformer or an AC to DC transformer and a first charging cable CC1 to supply power to each of the thruster , The buffer state can be maintained in advance.

Near and far large capacity batteries can be repeatedly charged or discharged to maintain or follow preset charge values. For example, the large capacity batteries may be self-regulated to start charging when discharged to a predetermined lower limit charging value and discharge when being charged to a predetermined upper limit charging value or more. Also, for example, large capacity batteries can be self-regulating charging and discharging so as to follow a predetermined charge / discharge target value which varies with time.

Further, the large capacity batteries can switch the charging or discharging state of the large capacity battery in response to an external battery control signal. For example, when the battery control signal corresponding to the charge start signal is applied from the controller 22 to the large capacity batteries, the large capacity batteries start charging, and when the battery control signal corresponding to the discharge start signal is applied, To start discharging, large capacity batteries can be controlled externally.

The plurality of generators can transmit the generator load information regarding the operation of each generator and the operation load to the outside, for example, to the external controller 22. Also, the large-capacity battery can transmit information to the external controller 22, for example, about the present charging degree of the large-capacity battery, the number of times of charging and discharging, the charging and discharging duration,

The controller 22 can provide a generator control signal to each of the generators to control the operation of each generator and the degree of the operational load. Also, the controller 22 can control the charging or discharging of the large capacity battery by providing the battery control signal to the large capacity battery. The controller 22 can also be connected to the power grid 21 via the sensor 23 and can detect the voltage of the power grid 21 by the sensor 23.

3 is a perspective view showing an example of a charging cell of a large-capacity battery according to an embodiment of the present invention.

4 is an exploded perspective view showing an exemplary configuration of one battery pack of Fig.

5 is a perspective view showing an example of an ISO container type mass storage device including an exemplary charge cell configured with the tower type battery rack shown in FIG.

3 to 5, in a ship according to one embodiment of the present invention, the large capacity batteries may include one or more charging cells disposed in an ISO (International Standard Organization) container and an ISO container.

An ISO container is a container used as a transport, which is an international standard, for example, with sufficient rigidity to be suitable for repeated use, can be moved between two or more transport means while preserving the contents inside the container, It can be understood as a container that is easy to subtract and meets the dimensions specified in the International Standard ("ISO"). The dimensions of the ISO container can have a length of 20ft, a height of 8ft and a width of 8ft. However, a half size container can also be understood as an ISO container, since two half size containers can be placed side by side to satisfy the above dimensional conditions.

That is, in one embodiment of the present invention, the ISO container may have a width (w) of 8 ft and a height (h) of 8 ft and a length of 20 ft. One or more charging cells are disposed within the ISO container. The one or more charging cells may be comprised of a set of secondary cells capable of repeating charging and discharging many times.

Referring to FIG. 3, the charging cell of a large capacity battery according to an embodiment of the present invention may be configured as a tower type battery rack. The tower type battery rack may have a structure in which a plurality of battery packs 320 are accommodated in the respective shelves 300a, 300b, and 300c stacked in multiple stages. Of course, since this structure is only one example, the number of battery packs 320 and the stacking number of the shelves 300a, 300b, and 300c can be changed in consideration of the size, capacity, have.

In a charging cell composed of a tower type battery rack, the battery packs 320 can be connected to the controller 22 of the ship by a cable 310. In FIG. 8, the battery packs 320 of the lower and middle ends 200b are in a state in which shelf mounting is completed, and the top end 200c shows a state in which the mounting operation of the battery pack 320 is proceeding.

The controller 22 of the power system 20 of the ship can receive information on the charging and discharging states of the respective battery packs 320 through the cable 310 and transmits battery control signals to the battery packs 320 Can be transmitted. The configuration of the cable 310, the connection with each battery pack 320, and the communication protocol between the battery pack 320 and the controller 22 are well known to those skilled in the art or known in the art The system can be implemented in various systems or methods. 3, the cable 310 connected to each battery pack 320 is illustrated as a wire, but the present invention is not limited thereto. Information transmission / reception to / from the battery packs 320 may be performed by a wireless transmission / reception method.

In the above description, the cable is exemplified as a communication line for transmitting / receiving information, but the cable 310 may be constituted by a power cable for power transmission. That is, the cable 310 can be understood as an internal power cable for connecting electric power charged or discharged to each battery pack to the outside of the large-capacity battery.

4, the battery pack 320 includes a secondary battery module 322 in which a plurality of secondary battery cells 321 are assembled, a battery pack case 324, a BMS (Battery Management System) 325, a battery pack case cover (323).

The secondary battery cell 321 may be a rechargeable lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel hydride battery, a nickel zinc battery, or the like.

The BMS 325 includes a charge / discharge current, an electric characteristic value measurement including the voltage or current of each secondary battery cell 321, charge / discharge control, equalization control of voltage, estimation of state of charge (SOC) To perform various control functions applicable at the level of a person skilled in the art.

The BMS 325 may also be connected to the controller 22 of the ship's power system 20 via a communication network. The BMS 325 can transmit data relating to the state of the battery pack 320 in charge of itself through the communication network or receive the battery control signal related to the charge and discharge of the battery pack 320 from the controller 22. [ For this purpose, the BMS 325 may include control logic to charge and discharge the battery pack 320 and to perform various control functions.

Referring to FIG. 5, the ISO container type power storage device includes a plurality of battery packs 320 in a container. Each battery pack 320 is mounted on a shelf firmly fixed to the bottom or side wall of the container. Of course, a plurality of tower battery racks 300 illustrated in FIG. 4 may be installed in the container. At this time, each of the battery packs 320 and the tower-type battery racks 300 may be connected in series and / or in parallel according to a power capacity to be stored. The ISO container type large capacity battery may include an air conditioner (not shown) to keep the internal temperature constant. In addition, the ISO container type large-capacity battery may further include a monitoring device 330 for controlling charge / discharge of each battery pack 320 or monitoring charge / discharge conditions. The monitoring device 330 can be connected to the BMS provided in each battery pack 320 through a communication network and can communicate with the BMS to control the charging and discharging of the battery pack 320 and monitor the charging and discharging states . That is, the monitoring device 330 can be independently connected to the controller 22 of the ship's power system 20 through a communication network as well as to monitor and control the charging / discharging state of the large capacity battery, The state of charge and discharge of each battery pack 320 can be monitored and controlled based on the control signal of the battery pack 320.

6 is a cross-sectional view schematically showing a state in which an ISO container type large capacity battery according to an embodiment of the present invention is mounted.

6 shows an exemplary storage room 40 for the first to fourth storage rooms.

6, a ship equipped with an ISO container type large capacity battery according to an embodiment of the present invention includes a storage room 40 for storing an ISO container type large capacity battery, and a power system (not shown) for supplying power to the in- 20).

The storage room 40 is a space capable of loading and accommodating the large capacity battery from above the vessel, for example, a surface of the vessel, for example, a space in which the deck is settled inward.

The storage chamber 40 may include an inner wall 42 surrounding the storage chamber 40. The inner wall may be formed of a shock absorbing member for protecting the ISO container type large capacity battery inserted into the storage room 40 from an external impact and may be formed of a cooling member for maintaining the temperature of the storage room 40, have.

In addition, the storage room 40 may include a connection terminal (not shown) connected to the large capacity battery and connected to the first to third direct connection cables DCC3 or to the second charge cable.

The large capacity battery 30 can be inserted from the outside of the ship, for example, by a crane, or can be discharged outside the ship. That is, the large-capacity battery according to an embodiment of the present invention is formed in the ISO container standard and can be inserted and discharged from the top of the ship in the storage room 40 of the ship, so that the load, As part of the unloading operation, an ISO container type large capacity battery can be moved and replaced. The transfer and replacement of such a large capacity battery can conveniently be carried out using a loading device such as a crane already installed in the dock.

Figure 7 is a graph illustratively illustrating variations in load over time in an exemplary navigation schedule of a ship in accordance with one embodiment of the present invention.

FIG. 8 is an exemplary diagram illustrating that the controller 22 of the ship according to an embodiment of the present invention sets the charging period with reference to the navigation schedule according to FIG.

In Fig. 7, the abscissa is time axis and the unit is day. In FIG. 7, the vertical axis represents the total load consumed by the power system 20 of the ship, and the unit is%. At this time, 100% represents the maximum load that one generator of a ship can produce.

Referring to FIG. 7, a general schedule of a ship can be distinguished as a departure port, a cruise port, and an inlet port based on fluctuation of a load to be consumed.

Especially in the departure period and the arrival season, for the departure and berthing, a plurality of thruster in the ship can keep the total operation state, and the consumption load of the ship can be increased sharply. During the cruise period, a relatively constant and low power load may be required.

Since a lot of power is consumed at the departure port and the port of entry, the ship needs to buffer the remote large capacity battery before the port.

The departure and departure periods are relatively short during the entire service period, but may require high power loads. In one embodiment of the present invention, the powers required for the thruster at the launcher and the inlet port can be supplemented by a remote large capacity battery, thereby reducing the operational load of the generator. Furthermore, the thrusters can be connected directly to the nearby large capacity batteries with direct connection cables, thereby reducing the length of the power cable with a high allowable current to power the thruster.

Referring to FIG. 8, the controller 22 according to an embodiment of the present invention sets an additional charge / discharge time interval of a large capacity battery based on information on pre-stored navigation scheduling, information on the degree of charge of the battery, .

Specifically, FIG. 8 illustrates an arbitrary time period before entry to the ship. At this time, the average load of the in-ship power system 20 is exemplified as 60%.

In an embodiment of the present invention, the controller 22 may calculate the remaining time until entry to the port based on the flight information, and calculate the average load and charge required power amount during operation. Specifically, the controller 22 can calculate the amount of power required for buffering based on the information on the degree of charge of the battery. Next, the controller 22 can calculate the charging period based on the average load and the required charging power during operation. Specifically, the controller 22 can determine the charging period required for buffering when at least one generator is operated with the maximum efficiency load based on the amount of power required for the calculated buffer.

Then, the controller 22 may reflect the calculated charging period in the flight information DB to perform additional charge / discharge control. At this time, the controller 22 controls the at least one generator to operate at the maximum efficiency load at a time when the calculated charging period is not greater than the calculated remaining time until the inlet, It can be charged.

Accordingly, in performing the charging of the large capacity battery required for entering the port and then departing the ship according to the embodiment of the present invention, the generator can be operated with the maximum efficiency load to proceed charging, The required fuel economy can be improved.

9 is a view showing a container line according to an embodiment of the present invention.

Referring to FIG. 9, a power operation system of a ship and a ship according to an embodiment of the present invention can be applied to a container ship 1000. Specifically, a thruster 1006 located at the bow, a large capacity battery 1004 located near the center of the hull, a generator 1002 and a propeller 1008 located at the forefront, The configuration of the power management system of FIG. Alternatively, a configuration such as the large capacity battery 1002 may be disposed on the container placed on the deck.

10 is a view showing an LNG line according to an embodiment of the present invention.

Referring to FIG. 10, a power management system for a ship and a ship according to an embodiment of the present invention can be applied to an LNG line 2000. Specifically, the thruster 2006 located at the bow, the large capacity battery 2004 located near the center of the hull, the generator 2002 located at the stern 2002 and the propeller 2008, The configuration of the power management system of FIG. The electric power generated by the generator 2002 and the electric power discharged from the large capacity battery 2004 can be supplied to a load such as a temperature regulator for regulating the temperature of the LNG tank or a compressor for re-liquefying the BOG vaporized in the LNG tank have

Accordingly, a ship, a ship's power management system, and a power management method according to an embodiment of the present invention can be implemented in various ways, such as the above-described container line 1000 and LNG line 2000, It can be applied to ships. 9 and 10 are merely examples in which a ship, a power operation system and a power operation method of a ship according to an embodiment of the present invention can be applied to various ships, and a detailed configuration of a power operation system of a ship and a ship May be varied in design.

While the invention has been described with reference to a ship in the above embodiments, it is obvious that the same principle can be applied to an offshore structure.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

12: first storage room 14: second storage room
16: third storage room 18: fourth storage room
FB1: 1st remote large capacity battery
FB2: 2nd remote large capacity battery
FB3: 3rd remote large capacity battery
DCC1: 1st direct connection cable
DCC2: 2nd direct connection cable
DCC3: Third direct-connect cable
BT: Bau Thruster AT1: 1st Azimuth Thruster
AT2: The second azimuth thruster

Claims (3)

A battery for receiving and storing electric power through the first charging cable; And
And a propeller directly connected to the battery through a direct connection cable,
Wherein the allowable current capacity of the direct connection cable is larger than the allowable current capacity of the first charging cable. The method according to claim 1,
The battery includes:
A container and at least one charging cell disposed within the container. The method according to claim 1,
Wherein the battery is disposed adjacent the top of the propeller.

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