KR102489391B1 - Charger for floating vessel - Google Patents

Abstract

Embodiments include a battery unit for storing power from a land power source; a power conversion unit converting current from the land power source to store power in the battery unit or converting current from the battery unit to supply power to an external marine floating object; a controller controlling at least one of an output voltage of the power conversion unit, charging power of the battery unit, and discharging power of the battery unit; a connection unit outputting the current converted by the power conversion unit to a land power connection unit of the marine floating object; and a charging facility for marine floating objects including a moving means in which the battery unit, the power conversion unit, and the controller are installed.

Description

Charging equipment for marine floating objects {CHARGER FOR FLOATING VESSEL}

Embodiments relate to a charging facility for supplying power to a floating object such as a ship, and more particularly, to a charging facility for supplying power in response to a connection specification of a floating object and an inboard battery charging system including the same.

Recently, due to eco-friendly issues, there is an increasing demand for electric propulsion systems and batteries for small and medium-sized ships.

In general, when an electric propulsion system and a battery are mounted on a ship, power required for them is supplied by an onshore power supply (AMP).

However, most of the main activity areas of small and medium-sized vessels are areas where the installation distribution of AMPs that can be electrically connected to ships is insufficient, such as island regions.

Therefore, charging facilities for charging the batteries of small and medium-sized ships in these areas are required.

According to one aspect of the present invention, there is provided a charging facility for supplying power corresponding to an ESS (Energy Storage System) of a marine floating object while moving on land or at sea.

In addition, according to various aspects of the present invention, a DCP (distribution control panel) for supplying power from a charging facility to an onboard battery is provided.

A charging facility for marine floating objects according to a first aspect of the present invention includes: a battery unit for storing power from a land power source; a power conversion unit converting current from the land power source to store power in the battery unit or converting current from the battery unit to supply power to an external marine floating object; a controller controlling at least one of an output voltage of the power conversion unit, charging power of the battery unit, and discharging power of the battery unit; a connection unit outputting the current converted by the power conversion unit to a land power connection unit of the marine floating object; and a moving unit in which the battery unit, the power conversion unit, and the controller are installed.

According to a second aspect of the present invention, a DCP (Distribution Control Panel) for charging an internal battery of a floating object is: a connection portion of a plurality of charging facilities for floating objects including one or more cells capable of storing power and a power converter, respectively; Charging facility connection to be connected; an output unit that transfers power from the charging facility for floating offshore objects to a land power connection unit on the offshore floating objects; and a conversion unit connected to each of the charging facility connection unit and the output unit.

DCP (Distribution Control Panel) for multiple charging of internal batteries of a plurality of marine floating objects according to a third aspect of the present invention is: one or more charging facilities for floating marine objects, each including one or more cells capable of storing power and a power converter, respectively. Charging equipment connection part connected to the connection part; an output unit that transfers power from the charging facility for floating offshore objects to land power connection units on a plurality of offshore floating objects; and a conversion unit connected to the charging facility connection unit and the output unit.

A charging facility for marine floating objects according to an aspect of the present invention charges a battery inside the floating floating object by supplying power from land. If the charging facility for offshore floating objects is utilized, power can be stably supplied to floating offshore objects even in areas where it is difficult to install an AMP, such as an island region.

In addition, the charging facility for floating offshore objects can convert the type of current in response to the connection specification of the floating offshore object, so that power can be properly supplied to the onboard battery.

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

BRIEF DESCRIPTION OF THE DRAWINGS To describe the technical solutions of the embodiments of the present invention or the prior art more clearly, drawings required in the description of the embodiments are briefly introduced below. It should be understood that the drawings below are for the purpose of explaining the embodiments of the present specification and not for limiting purposes. In addition, for clarity of explanation, some elements applied with various modifications, such as exaggeration and omission, may be shown in the drawings below.
1 is a schematic diagram of a filling facility for offshore floating matter according to a first aspect of the present invention.
2 is a diagram showing a charging facility for marine floating matter connected to an external charging target according to an embodiment of the present invention.
3A and 3B are schematic diagrams of a charging facility for marine floating matter according to a 1-1 embodiment of the present invention.
4 is a schematic diagram of a charging facility for marine floating matter according to the first to second embodiments of the present invention.
5 is a schematic diagram of a charging facility for offshore floating matter according to embodiments 1-3 of the present invention.
6 is a schematic diagram of an onboard battery charging system, according to a second aspect of the present invention.
7 is a schematic diagram of a DCP according to the 2-1 embodiment of the present invention.
8 is a schematic diagram of a DCP according to the 2-2 embodiment of the present invention.
9A and 9B are schematic diagrams of DCP according to the 2-3 embodiment of the present invention.
10 is a schematic diagram of a DCP according to Embodiments 2-4 of the present invention.
11 is a schematic diagram of a DCP according to Embodiments 2-5 of the present invention.
12 is a schematic diagram of a DCP according to Embodiments 2-6 of the present invention.
13 is a schematic diagram of a DCP according to Embodiments 2-7 of the present invention.
14A to 14D are schematic diagrams of DCPs according to embodiments 2-8 of the present invention.
15 is a schematic diagram of an onboard battery charging system, according to a third aspect of the present invention.
16 is a schematic diagram of a DCP according to the 3-1 embodiment of the present invention.
17 is a schematic diagram of a DCP according to the 3-2 embodiment of the present invention.
18 is a schematic diagram of a DCP according to the 3-3 embodiment of the present invention.

The terminology used herein is only for referring to specific embodiments and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising" as used herein specifies particular characteristics, regions, integers, steps, operations, elements and/or components, and the presence or absence of other characteristics, regions, integers, steps, operations, elements and/or components. Additions are not excluded.

In this specification, an offshore floating object is a structure having a battery while floating on a ship such as a small or medium-sized ship and other water bodies. Hereinafter, for clarity of explanation, the present invention will be described in more detail with examples in which the floating floating object is a ship, but this is only illustrative, and it will be clearly understood by those skilled in the art that the floating floating object of the present invention is not limited to a ship. will be.

1 is a schematic diagram of a charging facility for floating offshore objects according to an embodiment of the present invention, and FIG. 2 is a diagram showing a charging facility for floating offshore objects connected to an external charging target according to an embodiment of the present invention. .

Referring to FIGS. 1 and 2 , a charging facility 10 for marine floating matter includes a battery unit 100; power conversion unit 200; It includes a controller 300 and a moving means (not shown). Components 100, 200 and/or 300 are installed in the moving means. The components 100, 200, and 300 of the charging facility 10 may be moved in position by moving means. As shown in FIG. 2 , the means of transportation may be a vehicle or a marine floating object.

In this specification, the names of the input terminal and the output terminal merely refer to one side end and the other side end of components according to the direction of current flow according to circumstances. Unless otherwise specified, the input and output terminals are referred to based on the situation in which current flows from the charging facility 10 to the battery to be charged in the marine floating object, but in the opposite way in the situation where current flows from an external land power source to the charging facility 10 What should be interpreted will be clearly understood by those skilled in the art.

The battery unit 100 is an energy storage that stores power from a land power source.

An onshore power source is an external power source located on land. The land power source may be configured to supply either DC current or AC power. For example, the onshore power source may be an AC power source that distributes commercial current through an onshore power infrastructure, such as a commercial power source. In certain embodiments, the onshore power source may be an onshore charging station.

In addition, the external charging target is a battery of a floating vessel requiring power. As described above, the offshore floating object is a structure having a battery while floating on the water surface, such as a ship or other offshore structure.

The battery unit 100 includes one or more battery cell assemblies and/or one or more fuel cell stacks.

The battery cell assembly may be a battery pack or a battery module. A battery pack includes a number of battery modules and a battery control/protection system. The battery control/protection system may include, for example, a battery management system (BMS) cooling system. Each battery module is implemented as a battery cell assembly in which a number of battery cells are put into a frame. The battery cell is a battery capable of charging and discharging electrical energy, and may be, for example, a lithium ion battery, but is not limited thereto.

Each of the one or more fuel cell stacks includes a plurality of fuel cells. The fuel cell is a power generation device that generates power by receiving fuel from the outside. In one embodiment, the fuel battery cell may be a hydrogen fuel battery cell. The hydrogen fuel battery cell is a power generation device that converts chemical energy of fuel into electrical energy using an electrochemical reaction between oxygen and hydrogen.

When the battery unit 100 includes a fuel cell stack, the battery unit 100 includes a hydrogen storage container (not shown) for a fuel cell and a hydrogen supply system. The hydrogen supply system may include a fuel inlet, a pressure control valve, a pipe, an automatic control valve, and/or a hydrogen sensor.

In one embodiment, the battery unit 100 may include an assembly including a plurality of battery cells. The cell assembly may be a battery module in which a plurality of battery cells are packed or a pack including the battery module.

The battery unit 100 may include only a battery cell assembly or only a fuel cell stack. Such a charging facility for marine floating matter will be described in more detail with reference to FIGS. 3A and 3B below.

In other embodiments, the battery unit 100 may include one or more battery cell assemblies and a fuel cell stack. Such a charging facility for marine floating matter will be described in more detail with reference to FIGS. 4 and 5 below.

The marine floating object charging facility 10 stores power from a land power source in the battery unit 100 . Subsequently, when electrically connected to an external charging target, the stored power of the onshore power source is supplied from the battery unit 100 to the external charging target through the power conversion unit 200.

As such, small and medium-sized ships consume relatively large amounts of power compared to electric vehicles, and have large-capacity onboard batteries for this purpose. For example, the capacity of an onboard battery of a small or medium-sized ship may be 0.1 MWH or more. However, the capacity of the inboard battery is exemplary, and the charging facility 10 for marine floating objects according to embodiments of the present application may be used to charge an inboard battery having a capacity of less than 0.1 MWH.

The controller 300 stores the power supplied from the land power source in the battery unit 100 and discharges the power of the battery unit 100 to charge the battery of the external marine floating object. control the operation of

The controller 300 checks the state of the battery unit 100 and controls discharge power (ie, output power) based on the checked state of the battery unit 100 . The state of the battery unit 100 includes State of Charge (SoC), State of Health (SoH), and/or State of Function (SoF).

In addition, the device battery unit 100 includes one or more battery sensors (not shown). The controller 300 checks the state of the battery unit 100 through a battery sensor.

In addition, the controller 300 may control the power conversion unit 200 to adjust the converted voltage level. The controller 300 controls at least one converter included in the power conversion unit 200 to adjust the output voltage of the corresponding converter.

The controller 300 may be implemented in various forms.

In some embodiments, the charging facility 10 may include a single controller 300 that is complexly configured. For example, the controller 300 may be implemented to control the BMS of the battery unit 100 and the respective converters 211 and 231 of the power conversion unit 200 through one main control unit. may be

In some other embodiments, the charging facility 10 may include a plurality of controllers 300. For example, the plurality of controllers 300 may be implemented in a form including a facility controller 300 and individual controllers 300 . The facility controller 300 controls a conversion system composed of a plurality of converters 211 and 231 in the charging facility 10 . For example, the equipment controller 300 is an individual controller based on conversion system information that collects battery information such as battery status, marine floating matter information such as connection specifications of a ship, and the status of each converter 211, 231. 300), or a conversion command such as on/off or trip may be transmitted to the individual controller 300.

The individual controller 300 controls driving-related elements of the respective converters 211 and 231 of the power conversion unit 200 . For example, the individual controller 30 individually and directly controls current, power, voltage, and the like of each converter 211 and 231 .

In certain embodiments, the controller 300 may control the charging/discharging path and the converted voltage of the power conversion unit 200 to correspond to the connection specifications of the connected land power source or marine floating object. The controller 300 connects the DC connection unit 240, based on voltage information received from an external connection object (eg, a land power source or a marine floating object) to be connected to the floating floating object charging facility 10, or received by a user input. The voltage level, frequency and/or phase of the AC connection unit 250 may be adjusted. To this end, the controller 300 includes a communication unit for wired/wireless communication and/or an input unit for receiving a user input.

The voltage information may include supply voltage, intensity, frequency and/or phase information of a land power source, or may include a voltage type, connection voltage level, frequency and/or phase of a land power connection part of a marine floating object.

The power conversion unit 200 and the controller 300 will be described in more detail with reference to FIGS. 3 to 5 below.

3A and 3B are schematic diagrams of a charging facility for offshore floating matter according to various embodiments of the present invention.

Referring to FIGS. 3A and 3B , the battery unit 100 may include only one or more battery cell assemblies 110 or one or more fuel cell stacks 120 .

3A and 3B , when the battery unit 100 includes a plurality of battery cell assemblies 110 or a plurality of fuel cell stacks 120, a plurality of battery cell assemblies 110 or a plurality of fuel cell stacks 120 Output terminals of the fuel cell stack 120 are connected in parallel to a single node. An output current of each of the plurality of battery cell assemblies 110 or the plurality of fuel cell stacks 120 may flow to the power converter 200 through a single node.

The power conversion unit 200 includes one or more DC/DC converter units 210, one or more capacitors, and a DC/AC converter unit 230. In addition, the power conversion unit 200 includes a DC connection unit 240 and an AC connection unit 250.

Each DC/DC converter unit 210 includes a DC/DC converter 211 that receives DC current and outputs DC current. Some or all of the one or more DC/DC converters 211 may be boost converters.

The DC/DC converter 211 outputs a DC current obtained by converting the intensity of the input DC current. The voltage strength of the output DC current depends on the connection specifications of the offshore float to be connected.

An input terminal of the DC/DC converter 211 is connected to an output terminal of the battery unit 100 . The DC/DC converter 211 converts DC energy directly or indirectly input from the land-based charging station through the connection units 240 and 250 into DC energy corresponding to the storage voltage level of the battery unit 100 to form a battery cell assembly ( 110) to save. In addition, the DC/DC converter 211 converts the stored DC energy of the battery cell assembly 110 into other DC energy and outputs the converted DC energy to the DC connector 240 or the DC/AC converter 231 . Here, the other DC energy corresponds to the connection voltage level of the land power connection part of the DC type marine floating object or the input voltage level of the DC/AC converter 231.

At least one DC/DC converter unit includes at least one capacitor; A precharge relay 213 and a precharge resistor 215 may be further included. The precharge relay 213, the capacitor 214, and the precharge resistor 215 are components of the precharge circuit. In alternative embodiments, the DC/DC converter unit 210 may include a component 213 implemented in the form of a switch instead of a relay.

The at least one capacitor may include a DC link capacitor 214 disposed between the DC/DC converter 211 and the connection unit 240 . The capacitor 214 is disposed on a DC path connected to the output terminal of the DC/DC converter unit 210 and operates as a DC capacitor.

The precharge relay 213 and the precharge resistor 215 are connected in series. The precharge relay 213 and the precharge resistor 215 may be connected to the DC/DC converter 211 and the DC capacitor 214 in various structures.

In one embodiment, the series connection of the precharge relay 213 and the precharge resistor 215 may be connected in parallel to the connection of the DC/DC converter 211 and the DC capacitor 214. An output terminal of the battery unit 100 is connected to one end of the precharge relay 213 and an input terminal of the DC/DC converter 211 . As shown in FIG. 3 , one end of the precharge relay 213 may be connected to an output terminal of the battery unit 100 (ie, an input terminal of the DC/DC converter 211). One end of the precharge resistor 215 serially connected to the precharge relay 213 may be connected to the output terminal of the DC/DC converter 211.

In another embodiment, a series connection of the precharge relay 213 and the precharge resistor 215 may be connected in parallel for a DC path between the DC capacitor 214 and the DC connection 240 . For example, one end of the precharge relay 213 is connected to one end of the DC connector 240 side of both ends of the DC capacitor 214. One end of the precharge resistor 215 serially connected to the precharge relay 213 may be connected to a DC path between the DC capacitor 214 and the DC connector 240.

The charging facility 10 including the precharge circuit components 213, 214, and 215 can be used to initially charge a battery of a ship in a state where no ship system voltage is applied (eg, a deadship state).

First, the charging facility 10 is connected to a ship in a dead ship state in which the ship system voltage is not applied to the inside of the ship. At the time of this initial connection, the charging facility 10 has a state in which power supply has not yet started, and the output voltage of the charging facility 10 is not applied. After the connection, the precharge switch 213 is shorted (on), and charging power of the battery unit 100 is supplied through the precharge resistor 215 . When the supply voltage exceeds a predetermined level, the precharge switch 213 is turned off and a path between the DC/DC converter 211 and the battery unit 100 is opened. Then, the voltage is controlled by the user through the DC/DC converter 211. Then, when the ship system is activated, the onboard battery is charged.

The charging facility 10 including the precharge circuit components 213, 214, and 215 does not generate overcurrent from the charging facility 10 to the ship, and thus does not cause a failure of the ship system. In particular, this charging facility 10 is useful for initial charging the in-board battery of a ship in which the pre-charge circuit inside the ship is unavailable due to unapplied state of the ship system voltage or a ship that does not include the pre-charge circuit itself.

In addition, such a precharge circuit may be used to charge the internal capacitor of the charging facility 10. The capacitor 214, the precharge relay 213, and the resistor 215 enable stable charging and discharging of the battery unit 100. When the charge/discharge mode of the battery unit 100 starts, the capacitor 214 is charged first. Subsequently, the precharge relay 213 and the resistor 215 control the charge/discharge voltage of the battery unit 100 to a desired voltage after the capacitor 214 is charged. This is because when the capacitor 214 is initially charged, if it is directly connected to the battery unit 100 without the precharge resistor 215, an excessive inrush current is induced to the DC side of the battery unit 100. When the precharge relay (or switch) 213 is closed, charging power is initially gently charged in the capacitor 215 due to the resistive component of the precharge resistor 215 .

The DC/AC converter unit 230 includes a DC/AC converter 231 that receives DC current and outputs AC current. An input terminal of the DC/AC converter 231 may be connected to an output terminal of the DC/DC converter unit 210 . An output end of the DC/AC converter 231 is connected to the AC connector 250.

In one embodiment, the DC/AC converter 231 may be a three-phase inverter. The vessel's internal system voltage is primarily configured to utilize three-phase AC power. Therefore, the land power connection part of the ship also has a connection voltage specification for mainly transmitting three-phase AC power.

The DC/AC converter 231 converts AC energy input from the land charging station through the AC connection unit 250 into DC energy corresponding to the input voltage level of the DC/DC converter unit 210 to the DC/DC converter unit ( 210) is output. Here, the input voltage of the DC/DC converter unit 210 is the voltage of the other side opposite to the battery unit 100 side.

In addition, the DC/AC converter 231 receives the output current of the DC/DC converter unit 210 and outputs an AC current converted in intensity, frequency, and/or phase. The DC/AC converter 231 converts the converted DC energy received from the DC/DC converter 211 to correspond to the connection voltage level of the land power connection part of the AC type marine floating object and outputs it to the AC connection part 250. .

The DC/AC converter unit 230 may further include a filter 233. An input terminal of the filter 233 is connected to an output terminal of the DC/AC converter 231 . The filter 233 filters some or all of the output voltage or current noise of the DC/AC converter 231 so that the voltage or current of the AC connector 250 becomes a sine wave.

In alternative embodiments, the charging facility 10 may further include an additional filter (not shown). The additional filter is disposed on the DC path in the charging facility 10 and performs an operation of filtering some or all of DC voltage or current noise.

The marine floating object charging facility 10 supplies the output current of the DC/DC converter unit 210 to the marine floating object or to the DC/AC converter unit 230 . In addition, the marine floating object charging facility 10 receives a charging current from an external land power source and stores it in the battery unit 100 .

The marine floating object connected to the floating floating object charging facility 10 has a DC type or AC type land power connection.

The controller 300 controls at least one converter 211 or 231 by receiving voltage information of an external object connected to the charging facility 10 for marine floating objects.

The land power source connected to the offshore floating object charging facility 10 may be a DC type or AC type land power source. When connected to a DC type land power source, the charging current of the land power source is received from the DC connection unit 240 and stored in the battery unit 100 through the DC/DC converter unit 210. When connected to an AC type land power source, the charging current of the land power source is received from the AC connection unit 250 and supplied to the battery unit 100 through the DC/AC converter unit 230 and the DC/DC converter unit 210. Save.

When the controller 300 receives the voltage information of the land power source and obtains the supply voltage type and supply voltage level of the land power source, the DC/AC energy of the supply voltage level is converted into DC energy of the storage voltage level. The output voltage of the converter 231 and/or the DC/DC converter 211 may be adjusted.

When the offshore floating object connected to the offshore floating object charging facility 10 has a DC type land power connection, the DC connecting portion 240 of the offshore floating object charging facility 10 is connected to the DC type land power connecting portion of the offshore floating object. . Then, the output current of the DC/DC converter unit 210 is supplied to the onboard battery through the DC connection unit 240. The controller 300 may receive voltage information of the marine floating object and adjust the output voltage of the DC/DC converter 211 to correspond to the connection voltage level of the DC type land power connection unit.

On the other hand, when the marine floating object connected to the floating floating object charging facility 10 has an AC type land power connection, the AC connecting portion 250 of the floating floating object charging facility 10 is connected to the AC type land power connecting portion of the floating object. Connected. Then, the output current of the DC/DC converter unit 210 is supplied to the onboard battery through the DC/AC converter unit 230 and the AC connection unit 250. The controller 300 may receive voltage information of the marine floating object and adjust the output voltage of the DC/AC converter 231 to correspond to the connection voltage level of the AC type land power connection unit.

In one embodiment, the DC connection unit 240 includes a plurality of terminals 241 and 242 . Any one of the plurality of terminals 241 and 242 (241 or 242) receives current from other external equipment. Then, the external current received from either 241 or 242 is output to the other one 242 or 241 together with the current discharged from the battery unit 100 .

In addition, the AC connection unit 250 includes a plurality of terminals 251 and 252 . Any one of the plurality of terminals 251 and 252 (251 or 252) receives current from other external equipment. Then, the external current received from either 251 or 252 is output to the other one 252 or 251 together with the current discharged from the battery unit 100 .

4 is a schematic diagram of a charging facility for marine floating matter according to another embodiment of the present invention. Since the filling facility for floating matter in FIG. 4 is similar to the filling facility for floating matter in FIG. 3, the filling facility for floating matter in FIG. 4 will be described mainly with differences.

Referring to FIG. 4 , the battery unit 100 may include one or more battery cell assemblies 110 and a fuel cell stack 120 .

The power conversion unit 200 includes a first DC/DC converter unit 210a, a second DC/DC converter unit 210b and a DC/AC converter unit 230.

The first DC/DC converter unit 210a includes a first DC/DC converter 211A and a capacitor 214 . An input terminal of the first DC/DC converter 211a is connected to an output terminal of one or more battery cell assemblies 110 . In the series connection of the precharge relay 213 and the precharge resistor 215, one end of the precharge relay 213 side is connected to the input terminal of the first DC/DC converter 211a, and the precharge resistor 215 side The other terminal is connected to the output terminal of the first DC/DC converter 211a.

The second DC/DC converter unit 210b includes a second DC/DC converter unit 211b. An input terminal of the second DC/DC converter unit 211b is connected to an output terminal of the fuel cell stack 120 . An output terminal of the second DC/DC converter unit 211b may be connected to the DC connection unit 240 or the DC/AC converter unit 230 through the capacitor 214 .

An output terminal of the DC/AC converter unit 230 may be connected to the other terminal of the capacitor 214. For example, as shown in FIG. 4 , an output terminal of the DC/AC converter unit 230 may be connected to the other terminal of the capacitor 214 or blocked by a switch.

When the power type of the external connection object (eg, floating object) connected to the charging facility for floating offshore of FIG. 4 is DC, the battery cell assembly 110 converted by the first DC/DC converter unit 210a Some or all of the output current and the output current of the fuel cell stack 120 changed by the second DC/DC converter unit 210b are output from the DC connection unit 240 through the capacitor 214 .

In addition, when the power type of an external connection object (eg, a land power source) connected to the charging facility for marine floating objects of FIG. 4 is DC, the DC current of the land power source is input through the DC connection unit 240. Then, the input DC current of the land power source is converted by the first DC/DC converter unit 210a to charge the battery cell assembly 110 .

When the power type of the external connection object (eg, floating object) connected to the charging facility for floating offshore of FIG. 4 is AC, the battery cell assembly 110 converted by the first DC/DC converter unit 210a Some or all of the output current and the output current of the fuel cell stack 120 changed by the second DC/DC converter unit 210b are input to the DC/AC converter unit 230 through the capacitor 214. The DC current input to the DC/AC converter 231 is converted into AC current and output from the AC connection unit 250 through the filter 233.

In addition, when the power type of an external connection target (eg, a land power source) connected to the charging facility for marine floating objects of FIG. 4 is AC, the AC current of the land power source is input through the AC connection unit 250. Then, the input AC current of the land power source is converted by the DC/AC converter unit 230 and inputted to the first DC/DC converter unit 210a through the capacitor 214.

In this way, output terminals of the first DC/DC converter 211a and the second DC/DC converter unit 211b are connected to the DC connection unit 240 or the DC/AC converter unit 230 through the capacitor 214. The voltage of the DC current output from the DC connection terminal may be controlled by the first DC/DC converter 211a and the second DC/DC converter unit 211b.

5 is a schematic diagram of a charging facility for marine floating matter according to another embodiment of the present invention. Since the filling facility for floating matter in FIG. 5 is similar to the filling facility for floating matter in FIG. 3, the filling facility for floating matter in FIG. 5 will be described mainly with differences.

Referring to FIG. 5 , the battery unit 100 may include one or more battery cell assemblies 110 and a fuel cell stack 120 . Each of the battery cell assemblies 110 and the fuel cell stack 120 may have different voltage specifications.

The power conversion unit 200 includes a first DC/DC converter unit 210a, a second DC/DC converter unit 210b, and a DC/AC converter unit 230.

The first DC/DC converter unit 210a includes a first DC/DC converter 211a, a first capacitor 214 and a second capacitor 214 . An input terminal of the first DC/DC converter 211a is connected to an output terminal of one or more battery cell assemblies 110 . An output terminal of the first DC/DC converter 211a may be connected to the DC connection unit 240 or the DC/AC converter unit 230 through the first capacitor 214 .

In the series connection of the precharge relay 213 and the precharge resistor 215, one end of the precharge relay 213 side is connected to the output terminal of one or more battery cell assemblies 110, and the other end of the precharge resistor 215 side The terminal is connected to the output terminal of the first DC/DC converter 211a through the first capacitor 214.

The power conversion unit 200 includes a second DC/DC converter unit 211b. An input terminal of the second DC/DC converter unit 211b is connected to an output terminal of the fuel cell stack 120 . An output terminal of the second DC/DC converter unit 211b is connected to an input terminal of the first DC/DC converter 211a through a second capacitor 214.

An input terminal (ie, a DC terminal) of the DC/AC converter unit 230 may be connected to the other terminal of the capacitor 214. For example, as shown in FIG. 5 , an input terminal (ie, a DC terminal) of the DC/AC converter unit 230 may be connected to the other terminal of the capacitor 214 or blocked by a switch.

When the power type of the external connection object (eg, floating object) connected to the charging facility for floating offshore of FIG. 5 is DC, the output current of the battery cell assembly 110 and the second DC/DC converter unit 210b Some or all of the output current of the fuel cell stack 120 changed by the second capacitor 214 is input to the first DC/DC converter unit 210a, and is converted by the first DC/DC converter unit 210a. The converted current is output from the DC connection 240 through the capacitor 214.

When the power type of the external connection object (eg, land power source) connected to the charging facility for marine floating objects of FIG. 1 is input to the DC/DC converter unit 210a. The input AC current is converted by the first DC/DC converter unit 210a. The battery cell assembly 110 is charged by a portion of the converted DC current output from the first DC/DC converter unit 210a.

The DC current of the land power source is input from the DC connection unit 240 . Then, the input DC current of the land power source is converted by the first DC/DC converter unit 210a to charge the battery cell assembly 110 .

When the power type of the external connection object (eg, floating object) connected to the charging facility for floating offshore objects of FIG. 5 is AC, the output current of the battery cell assembly 110 and the second DC/DC converter unit 210b Some or all of the output current of the fuel cell stack 120 changed by the second capacitor 214 is input to the first DC/DC converter unit 210a, and is converted by the first DC/DC converter unit 210a. The converted current is input to the DC/AC converter unit 230 through the capacitor 214. The DC current input to the DC/DC converter 231 is converted into AC current and output from the AC connection unit 250 through the filter 233.

In addition, when the power type of an external connection object (eg, a land power source) connected to the charging facility for marine floating objects of FIG. 5 is AC, the AC current of the land power source is input through the AC connection unit 250. Then, the input AC current of the land power source is converted by the DC/AC converter unit 230 and inputted to the first DC/DC converter unit 210a through the capacitor 214. The input AC current is converted by the first DC/DC converter unit 210a. The battery cell assembly 110 is charged by a portion of the converted DC current output from the first DC/DC converter unit 210a.

In this way, the output terminal of the second DC/DC converter unit 210b connected to the fuel cell stack 120 has a structure connected to the input terminal side of the first DC/DC converter unit 210a. Then, the first DC/DC converter unit 210a may control the voltage of the DC connection unit 240 . The second DC/DC converter unit 210b separates the fuel cell stack 120 and the battery cell assembly 110 having different voltage specifications, thereby preventing mutual movement of birds and accidents.

As such, the marine floating object charging facility 10 described with reference to FIGS. 1 to 6 charges the battery unit 100 with power from a land power source in advance, and then transfers the charged power to the land power connection part of the ship. It is supplied to the battery in the ship through.

To charge the battery unit 100 of the charging facility 10, the land power source supplying AC power and the AC connection part 250 of the marine floating charging facility 10 are connected, and the controller 300 is a land power source. Receive voltage information of The voltage information includes strength, frequency and/or phase information of a supply voltage of a land power source. The controller 300 controls the amount of power charged in the battery unit 100 by controlling the output voltage of the DC/AC converter unit 230 based on the voltage information. The controller 300 may check the current charge amount of the battery unit 100 to complete the charging operation.

After charging of the battery unit 100 is completed, the charging power of the battery unit 100 is supplied to a ship having a DC type land power connection, or the battery unit 100 is supplied to a ship having an AC type land power connection. Charging power can also be supplied.

A ship having a DC type land power connection part and the DC connection part 240 of the charging facility 10 are connected, and the controller 300 receives voltage information of the DC type land power connection part of the connected ship. This voltage information may include a voltage type (ie, DC type information) and/or a connection voltage level of the land power connection part of the ship. The controller 300 controls the amount of power supplied to the onboard battery by controlling the output voltage of the DC/DC converter unit 210 based on the voltage information.

A ship having an AC type land power connection part and the AC connection part 250 of the charging facility 10 are connected, and the controller 300 receives voltage information of the AC type land power connection part of the connected ship. This voltage information may include a voltage type (ie, AC type information), a connection voltage level, frequency and/or phase of the ship's land power connection. The controller 300 controls the output voltage of the DC/AC converter unit 230 based on the voltage information. As a result, the amount of power output from the battery unit 100 and supplied to the onboard battery through the DC/DC converter unit 210, the DC/AC converter unit 230, and the AC connection unit 250 is controlled.

Such a ship charging facility 10 recharges the battery inside the ship by supplying power from land. Since the ship charging facility 10 can be moved by means of transportation, when the ship charging facility 10 is used, it is possible to stably supply power to ships even in areas where it is difficult to install an AMP, such as an island region.

In addition, the ship charging facility 10 can convert the type of current in response to the connection specifications of the ship, so that power can be properly supplied to the onboard battery.

The charging facilities 10 for offshore floating objects of FIGS. 3 to 5 may be connected to each other. As described above in FIG. 3 , the DC connection unit 240 and the AC connection unit 250 each include a plurality of terminals 241 , 242 , 251 , and 252 . When any one of the plurality of floating offshore charging facilities 10 is connected to the onboard battery through the onshore power connection of the offshore floating object, the discharge current of the remaining floating offshore charging facilities 10 It is supplied to the onboard battery through any one of the charging facilities 10 for offshore floating matter.

Due to this, power may be supplied to an onboard battery that exceeds the charging capacity of a single offshore charging facility 10. For example, when the charging capacity of the floating offshore charging facility 10 is 2MWH and the capacity of the onboard battery is 8MWH, the onboard battery can be charged by connecting four offshore floating charging facilities 10.

In one embodiment, when a plurality of floating offshore charging facilities 10 are connected to each other and an inboard battery of the same floating offshore object is set as a connection target, the output voltage level of each floating offshore charging facility 10 is synchronized. This synchronization is performed by the control of the converter unit 210 or 230 that converts the current with the output voltage. When a plurality of floating offshore charging facilities 10 are connected to each other through the DC connection unit 240, synchronization may be performed by controlling the DC/DC converter unit 210. When a plurality of floating offshore charging facilities 10 are connected to each other through the AC connection unit 250, synchronization may be performed by controlling the DC/AC converter unit 230.

In addition, the controller 300 of the plurality of charging facilities 10 for floating offshore objects may mutually share information between the charging facilities 10 for floating offshore objects. The mutual information may include a state of charge of a corresponding charging facility, a battery charge amount (eg, SoC), an output voltage, power intensity, and the like.

Based on the shared information, the priority of power supply is determined among a plurality of charging facilities 10 for floating offshore objects and assigned to each charging facility 10 for floating offshore objects. Then, charging power may be discharged from the floating floating object charging facility 10 having a higher SoC in order to supply a required amount of power (eg, on-board battery capacity) to the floating object.

1 to 5 may directly supply stored power with an output voltage level corresponding to the connection voltage level of the onshore power connection part of the ship.

In addition, the charging facility(s) for marine floating objects of FIGS. 1 to 5 may indirectly supply stored power through a DCP (Distribution Control Panel). In this case, the DCP delivers the stored power of the charging facility 10 at an output voltage level corresponding to the connection voltage level of the land power connection unit. The charging facility 10 may supply stored power at an output voltage level corresponding to the connection voltage level of the land power connection unit, or may not.

In certain embodiments, power of the charging facility(s) for offshore floatation of FIGS. 1 to 5 may be supplied to a single offshore float battery through the DCP. That is, the connection relationship between the floating object charging facility 10 and the floating object may be a many-to-one relationship through DCP.

6 is a schematic diagram of an onboard battery charging system, according to a second aspect of the present invention.

Referring to FIG. 6 , the inboard battery charging system 1 for floating offshore objects includes a plurality of charging facilities for floating offshore objects and a DCP (2000).

Each of the plurality of floating object charging facilities includes one or more cells capable of storing power and a power converter. A charging facility for offshore floating objects is configured to output DC current or AC current from a cell.

Some or all of the plurality of charging facilities for floating offshore objects may be the charging facilities for floating offshore objects shown in FIGS. 3 to 5 . Hereinafter, for clarity of explanation, the embodiments 2000 of the DCP of FIGS. 6 to 10 will be described in more detail as embodiments in which the charging facilities 10 for offshore floating matter of FIG. 3 are utilized.

The DCP (2000) includes a charging facility connection unit (2100); conversion unit 2200; An output unit 2400 is included. In some embodiments, the DCP 2000 may further include a panel controller 2300.

The charging facility connection part 2100 is connected to the connecting parts 240 and 250 of the plurality of charging facilities 10 for marine floating objects. As shown in FIG. 6, the charging facility connection part 2100 includes a plurality of input terminals 2101, 2102, 2103, 2104, and 2105. Each of the output units of the plurality of charging facilities for marine floating matter is connected to some or all of the plurality of input terminals 2101, 2102, 2103, 2104, and 2105, respectively. As shown in FIG. 6, when the number of charging facilities 10 for floating offshore objects is smaller than the number of input terminals of the DCP 2000, the output units 240 and 250 of the charging facilities for floating offshore objects, respectively are connected to some input terminals 2102, 2103, and 2104, respectively.

The conversion unit 2200 converts the current input from the charging facility connection unit. The output unit 2400 is connected to a land power connection unit of an offshore floating vessel having an onboard battery to be charged. The output unit 2400 transfers the output current of the conversion unit 2200 to the onshore power connection unit of the marine floating object. Then, the charging power of the plurality of charging facilities 10 for floating offshore objects is discharged to the onboard battery through the DCP (2000). Due to this, the onboard battery is charged.

The conversion unit 2200 and the output unit 2400 will be described in more detail with reference to FIGS. 7 to 14 below.

The panel controller 2300 performs operations similar to those of the controller 300 . In certain embodiments, the panel controller 2300 may adjust the output voltage of the conversion unit 2200 to correspond to the connection specifications of the marine floating object.

In some embodiments, the panel controller 2300 may communicate with the controller 300 of the connected charging facility 10. Through this, the panel controller 2300 may check the state of charge and discharge of the charging facility 10 for marine floating matter.

7 is a schematic diagram of a DCP according to the 2-1 embodiment of the present invention, and FIG. 8 is a schematic diagram of the DCP according to the 2-2 embodiment of the present invention.

Referring to FIGS. 7 and 8 , the DCP 2000 may be configured to be connected to a plurality of charging facilities 10 for floating offshore objects that output DC current. Then, the DCP (2000) has a DC connection part 2100 for receiving the DC current of the plurality of offshore charging facilities 10 as the charging facility connection part 2100. The plurality of input terminals 2101, 2102, 2103, and 2104 of FIGS. 7 and 8 are DC input terminals for receiving the DC current of the connected offshore charging facility 10.

The output unit 2400 includes a DC output unit 2440 and/or an AC output unit 2450. The DC output unit 2440 and the AC output unit 2450 may be a single output terminal.

The DCP 2000 has a DC supply path from the DC connection 2100 to the DC output 2440 and/or an AC supply path from the DC connection 2100 to the AC output 2450 . When the DCP (2000) has both supply paths, each input terminal (2101, 2102, 2103, 2104) is connected to the two supply paths.

The conversion unit 2200 is disposed on a DC supply path and an AC supply path. In some embodiments, the converter 2200 may include one or more switches in each of a DC supply path and an AC supply path.

In addition, when the conversion unit 2200 has the AC output unit 2450, it may include one or more DC/AC converters 2231. As shown in FIG. 7 , the conversion unit 2200 may include a single DC/AC converter 2231. Alternatively, as shown in FIG. 8 , the conversion unit 2200 may include a plurality of DC/AC converters 2231A, 2231B, 2231C, and 2231D.

The bus bar 2232 collects the discharged power of the charging facilities 10 for floating offshore objects.

As shown in FIG. 7 , when the bus bar 2232 is connected to the input terminal of the DC/AC converter 2231, DC power is collected.

As shown in FIG. 8, the bus bar 2232 collects AC power when connected to the output terminal of the DC/AC converter 2231. The AC current converted by the DC/AC converter 2231 is transferred to the AC output unit 2450 through the bus bar 2232.

The DC/AC converter 2231 receives DC current from the DC connector 2100 through the bus bar 2232 and converts it into AC current. A bus bar 2232 and a DC/AC converter 2231 are disposed on the AC supply path. Then, an AC supply path inside the DCP 2000 starts from the DC connector 2100 and is formed to the AC output unit 2450 through the bus bar 2232 and the DC/AC converter 2231.

The AC output unit 2450 outputs the AC current converted by the DC/AC converter 2231 to the onshore power connection unit of the marine floating object connected to the DCP 2000.

In one embodiment, the DCP 2000 may further include a filter (not shown) between the DC/AC converter 2231 and the AC output unit 2450. The filter of the DCP (2000) operates similarly to the filter (233) of the charging facility (10).

When the panel controller 2300 receives voltage information of the connected offshore float, it controls the conversion function of the DC/AC converter 2231 based on the voltage information of the offshore float. The panel controller 2300 may control the DC/AC converter 2231 to adjust the level of the AC voltage to be output. The magnitude of the output AC voltage is adjusted to correspond to the voltage specification of the land power connection part of the marine floating object included in the voltage information.

The conversion unit 2200 may include a bus bar 2212 when the DC output unit 2440 is included. A DC supply path inside the DCP 2000 starts from the DC connector 2100 and forms a DC output unit 2440 through the bus bar 2212.

In the case of DC charging, the panel controller 2300 communicates with the charging facility 10 and the DCP 2000 transmits required voltage information to the charging facility 10 based on received or input land connection voltage information of the marine floating object. may be Discharged power of the plurality of floating offshore charging facilities 10 is collected by the bus bar 2212 and then transmitted to the DC output unit 2440.

The output voltage level of the plurality of floating offshore charging facilities 10 to be connected to the DC output unit 2440 corresponds to the connection voltage level of the land power connection unit of the offshore floating object.

When the offshore floating object has an AC type connection specification, the land power connection unit of the offshore floating object is connected to the AC output unit 2450 of FIGS. 7 and 8, and charging facilities for a plurality of floating offshore objects through the AC supply path (10) Power is supplied by onboard batteries. The panel controller 2300 may control the DC/AC converter 2231 by receiving voltage information of an ocean floating object after connection or before connection.

When the offshore floating object has a DC type connection specification, the onshore power connection unit of the offshore floating object is connected to the DC output unit 2440 of FIGS. 7 and 8, and a plurality of charging facilities for floating offshore objects through the DC supply path (10) Power is supplied by onboard batteries.

In alternative embodiments, the DCP 2000 may further include a DC/DC converter 2211 disposed between the DC bus bar 2212 and the DC output 2440. When the DC connection specification of the vessel to be charged is different from the DC output specification of the charging facility 10 connected to the DCP (2000), the DC/DC converter 2211 is controlled by the controller 2300, and the DCP (2000) Power may be supplied with a DC voltage corresponding to the DC connection specifications of the vessel to be charged.

In addition, the DCP 2000 may further include a precharge relay or switch 2213, a DC capacitor 2214, and a precharge resistor 2215. Since these precharge circuit components 2213, 2214, and 2215 are similar to the precharge circuit components 213, 214, and 215 of the charging facility 10, a detailed description thereof will be omitted.

9 is a schematic diagram of a DCP according to a 2-3 embodiment of the present invention, and FIG. 10 is a schematic diagram of a DCP according to a 2-4 embodiment of the present invention.

Referring to FIGS. 9A and 10 , the DCP 2000 may be configured to be connected to a plurality of charging facilities 10 for floating offshore objects that output AC current. Then, the DCP (2000) includes the AC connection part 2100 for receiving the AC current of the plurality of offshore charging facilities 10 as the charging facility connection part 2100. The plurality of input terminals 2101, 2102, 2103, and 2104 of FIG. 9A are AC input terminals for receiving the AC current of the connected offshore charging facility 10.

The output unit 2400 includes a DC output unit 2440 and/or an AC output unit 2450. The DC output unit 2440 and the AC output unit 2450 may be a single output terminal.

The DCP 2000 has a DC supply path from the AC connection 2100 to the DC output 2440 and/or an AC supply path from the AC connection 2100 to the AC output 2450 . When the DCP (2000) has both supply paths, each input terminal (2101, 2102, 2103, 2104) is connected to the two supply paths.

The conversion unit 2200 is disposed on a DC supply path and an AC supply path. In some embodiments, the converter 2200 may include one or more switches in each of a DC supply path and an AC supply path.

In addition, when the conversion unit 2200 has the DC output unit 2440, it may include one or more AC/DC converters 2251. The AC/DC converter 2251 receives AC current and converts it into DC current.

As shown in FIG. 9A , the conversion unit 2200 may include a single AC/DC converter 2251. Alternatively, as shown in FIG. 10 , the DCP 2000 may include a plurality of AC/DC converters 2251A, 2251B, 2251C, and 2251D.

The AC/DC converter 2251 receives AC current from the AC connector 2100 through the bus bar 2252 and converts it into DC current. A bus bar 2252 and an AC/DC converter 2251 are disposed on the DC supply path. Then, the DC supply path inside the DCP 2000 starts from the AC connector 2100 and is formed to the DC output unit 2440 through the bus bar 2252 and the AC/DC converter 2251.

The busbars 2252 and 2262 collect the discharge power of the charging facilities 10 for floating offshore objects.

As shown in FIG. 9A, the bus bar 2252 collects AC power when connected to the input terminal of the AC/DC converter 2251.

When a plurality of AC/DC converters 2251 are included, the bus bar 2252 collects a plurality of powers into one. As shown in FIG. 10, the bus bar 2252 collects DC power when connected to the output terminal of the AC/DC converter 2251. The DC current converted by the AC/DC converter 2251 is transferred to the DC output unit 2440 through the bus bar 2252.

The AC output unit 2450 outputs the DC current converted by the AC/DC converter 2251 to the land power connection unit of the marine floating object connected to the DCP 2000.

When the panel controller 2300 receives voltage information of the connected floating object, it controls the conversion function of the AC/DC converter 2251 based on the voltage information of the floating object. The panel controller 2300 may control the AC/DC converter 2251 to adjust the level of the DC voltage to be output. The magnitude of the output DC voltage is adjusted to correspond to the voltage specification of the land power connection part of the marine floating object included in the voltage information.

The DC capacitor 2214 is first charged by the charging power of the battery unit 100 in the charging facility 10, and then the AC/DC converter 2251 controls the DC type output voltage.

When the offshore floating object has a DC type connection specification, the onshore power connection unit of the offshore floating object is connected to the DC output unit 2440 of FIGS. 9 and 10, and a plurality of charging facilities for floating offshore objects through the DC supply path AC power of (10) is supplied by onboard batteries. The panel controller 2300 may control the AC/DC converter 2251 by receiving voltage information of an ocean floating object after connection or before connection.

The conversion unit 2200 may include a bus bar 2262 when the AC output unit 2450 is provided.

In one embodiment, the AC supply path inside the DCP 2000 may start from the AC connector 2100 and form an AC output unit 2450 through the second bus bar 2262. In this case, the output voltage level of the plurality of offshore charging facilities 10 to be connected to the AC output unit 2450 corresponds to the connection voltage level of the land power connection unit of the offshore floating object. AC power discharged from the plurality of offshore charging facilities 10 is collected by the second bus bar 2262 and then transmitted to the AC output unit 2450.

In other embodiments, the DCP 2000 may further include one or more AC/AC converters 2261. The AC/AC converter 2261 is a component that converts an input voltage of AC current into another output voltage, and may be a back-to-back converter, but is not limited thereto.

The AC/AC converter 2261 is disposed between the bus bar 2262 and the AC output unit 2450 as shown in FIG. 9A, or as shown in FIG. 10, the bus bar 2262 and the AC type It is disposed between the charging facility connection 2100 and the bus bar 2262. A plurality of AC/AC converters 2261 may be included in the DCP 2000 as shown in FIG. 10 .

When the connection specification of the AC voltage of the vessel to be charged is different from the output specification of the AC voltage of the charging facility 10 connected to the DCP (2000), the DC/DC converter 2211 is controlled by the controller 2300 and the DCP (2000) may supply power with an AC voltage corresponding to the connection specifications of the vessel to be charged.

In one embodiment, the DCP 2000 may further include a filter (not shown). The filter of the DCP (2000) may be disposed on the output side of the AC/AC converter (2261). Alternatively, the filter of the DCP 2000 may be disposed on a DC path between the AC/DC converter 2251 and the DC connector 2440.

Similar to the filter 233 of the charging facility 10, the filter of the DCP 2000 disposed on the AC path performs an operation of partially or entirely filtering noise of the AC current. The filter of the DCP 2000 disposed on the DC path performs an operation of filtering some or all of DC voltage or current noise.

When the marine floating object has an AC type connection specification, the land power connection unit of the floating floating object is connected to the AC output unit 2450 of FIGS. AC power of (10) is supplied by onboard batteries. At this time, the panel controller may transmit voltage information of connection specifications of the marine floating object to the charging facility.

In alternative embodiments, the DCP 2000 may further include a precharge circuit component.

In some embodiments, the DCP 2000 may further include a precharge relay or switch 2253, one or more capacitors 2254, and a precharge resistor 2255. The precharge circuit including these precharge circuit components 2253, 2254, and 2255 is connected to the DC output terminal of the AC/DC converter 2251. The AC/DC converter 2251 is used for precharging along with power supply corresponding to the connection specifications of the ship. A precharge circuit including the precharge circuit components 2253, 2254, and 2255 may be implemented in various forms. In one example, a precharge circuit may be connected to the AC/DC converter 2251 including two DC outputs. As shown in FIG. 9A, a series connection of a precharge relay 2253 and a precharge resistor 2255 is connected to one of the DC output terminals. Meanwhile, the DC capacitor 2254 is connected to the other DC output terminal of the AC/DC converter 2251.

In another example, the precharge circuit may be connected to the AC/DC converter 2251 including a single DC output. Here, the DC capacitor 2254 is connected to the DC output terminal of the AC/DC converter 2251. An output terminal of the AC/DC converter 2251 is connected to the DC output unit 2440 through a capacitor 2254. The precharge relay or switch 2253 and the precharge resistor 2255 are disposed in parallel in a path between the DC capacitor 2254 and the DC output unit 2440. As such, the precharge circuit may be directly connected to the DC output terminal of the AC/DC converter 2251, or indirectly connected after the other component 2254.

In some other embodiments, the DCP 2000 may further include a rectifier 2257. As shown in FIG. 9B, the rectifier 2257 is connected to the AC input of the AC/DC converter 2251. The rectifier 2257 is used for precharging. In this case, the precharge relay or switch 2253 and the precharge resistor 2255 are connected to the output terminal of the rectifier 2257.

When the DCP 2000 includes a plurality of AC/DC converters 2251, the DCP 2000 includes single or multiple precharge circuit components respectively connected to the single or multiple AC/DC converters 2251. (2253, 2254, 2255, and/or 2257). For example, as shown in FIG. 10 , the precharge circuit components 2253, 2254, and 2255 are installed in one converter 2251a among all converters 2251, or a plurality of converters (eg, 2251a) To 2251d), a plurality of precharge circuit components 2253, 2254, and 2255 may be connected to each other. At this time, the connected precharge circuit components are not limited to the components 2253, 2254, and 2255 shown in FIG. 10, and the connection structure is also not limited. In another example, the precharge circuit components and types connected to single or multiple AC/DC converters 2251 among the plurality of AC/DC converters 2251 are indirectly connected to the DC output of the AC/DC converters 2251. , or as shown in FIG. 9B, it may be connected to the AC input terminal of the AC/DC converter 2251.

11 is a schematic diagram of a DCP according to Embodiments 2-5 of the present invention, and FIG. 12 is a schematic diagram of a DCP according to Embodiments 2-6 of the present invention.

11 and 12, the DCP (2000) to be connected to the charging facility 10 that supplies DC power or AC power is a conversion unit 2200 having a structure similar to the power conversion unit 200 of the charging facility 10 may include. Since the DCP of FIG. 11 is similar to the DCP of FIGS. 7 to 10, the differences will be mainly described.

In one embodiment, the charging facility connection unit 2100 receives DC power. In this case, the conversion unit 2200 may include a DC/DC converter 2211 and a DC/AC converter 2231. When the charging facility connection unit 2100 receives DC power as shown in FIG. 11, it is transmitted to the conversion unit 2200 through the DC bus bar 2212. The output current of the DC/DC converter 2211 flows to the DC output unit 2440 or to the DC/AC converter 2231. The DC/AC converter 2231 converts the input DC current into AC current corresponding to the ship's connection specifications, and outputs it to the AC output unit 2450.

In another embodiment, the charging facility connection unit 2100 receives AC power. In this case, the conversion unit 2200 may include an AC/DC converter 2251 and a DC/AC converter 2231. When the charging facility connection unit 2100 receives AC power as shown in FIG. 11, it is transmitted to the conversion unit 2200 through the AC bus bar 2252. The output current of the AC/DC converter 2251 flows into the DC output unit 2440 or into the DC/AC converter 2231. The DC/AC converter 2231 converts the input DC current into AC current corresponding to the ship's connection specifications, and outputs it to the AC output unit 2450.

In addition, the DCP 2000 may further include precharge circuit components 2213 , 2214 , 2215 , 2253 , 2254 , and 2255 .

13 is a schematic diagram of a DCP according to Embodiments 2-7 of the present invention.

Since the DCP of FIG. 13 is similar to the DCP of FIGS. 7 to 10, the differences will be mainly described.

Referring to FIG. 13 , the plurality of charging facilities 10 for floating offshore objects may all be the charging facilities 10 for floating offshore objects shown in FIGS. 3 to 5 .

The converters 211 and 231 inside the charging facility 10 for floating objects 10 are controlled by the controller 300 of the charging facility 10 for floating objects at sea, so that the output voltage of the charging facility 10 for floating objects 10 is connected to the floating object. It may be adjusted to correspond to specifications. In this case, additional current conversion may not be required in the conversion unit 2200 .

Then, the conversion unit 2200 is configured as a connection unit. In the above embodiment, the conversion unit 2200 may include one or more bus bars 2212 and 2262 connected to the connection unit 2100 and the output unit 2400 as shown in FIG. 13 . The DCP (2000) of FIG. 13 transfers the power of the floating floating object charging facility 10 to the onboard battery as it is already adjusted to correspond to the connection specifications of the floating object.

3 to 5 may include both a DC output unit 240 and an AC output unit 250. Then, the DCP 2000 includes a DC input unit 2140 and an AC input unit 2150. As shown in FIG. 11 , the DC input unit 2140 and/or the AC input unit 2150 may have a plurality of input terminals.

Meanwhile, the DCP 2000 may be implemented to distribute only a specific power type.

14A to 14D are schematic diagrams of DCPs according to embodiments 2-8 of the present invention.

Referring to FIG. 14 , the DCP 2000 may have a single power path structure. For example, the DCP 2000 may be implemented as a DC input-DC output path, a DC input-AC output path, an AC input-DC output path, or an AC input-AC output path.

14a is a DCP (2000) that is connected to a DC-type charging facility 10 and supplies DC power to a ship. Referring to FIG. 14A, the DCP (2000) may include: a charging facility connector 2100 receiving DC power, a DC bus bar 2212, a DC/DC converter 2231, and a DC output unit 2440. may be

14b is a DCP (2000) that is connected to the DC type charging facility 10 and supplies AC power to the ship. Referring to FIG. 14B, the DCP 2000 may include: a charging facility connection unit 2100 receiving DC power, a DC bus bar 2212, a DC/AC converter 2231, and an AC output unit 2450. may be

14c is a DCP (2000) that is connected to the AC type charging facility 10 and supplies DC power to the ship. Referring to FIG. 14C, the DCP 2000 may include: a charging facility connector 2100 receiving AC power, an AC bus bar 2232, an AC/DC converter 2251, and a DC output unit 2440. may be

14d is a DCP (2000) that is connected to the AC type charging facility 10 and supplies AC power to the ship. Referring to FIG. 14D, the DCP 2000 may include: a charging facility connection unit 2100 receiving AC power, an AC bus bar 2232, an AC/AC converter 2261, and an AC output unit 2450. may be

Also, as shown in FIGS. 14A and 14C , the DCP 2000 may further include precharge circuit components 2213, 2214, 2215, 2253, 2254, and 2255.

In addition, the power of the charging facility(s) for marine floating objects of FIGS. 1 to 5 may be multi-supplyed to the onboard battery of a plurality of floating marine objects through a distribution control panel (DCP) different from the DCP (2000) of the second side. there is. That is, the connection relationship between the floating object charging facility 10 and the floating object may be a one-to-many relationship or a many-to-many relationship through DCP. Here, the many-to-many relationship means a relationship in which the number of charging facilities 10 for floating offshore objects is smaller than the number of floating offshore objects to be charged.

15 is a schematic diagram of an onboard battery charging system, according to a third aspect of the present invention.

Since the inboard battery charging system 1 of FIG. 15 is similar to the inboard battery charging system 1 of FIG. 6 , differences will be mainly described.

The floating offshore battery charging system 1 includes at least one charging facility for offshore floating objects and a DCP (3000). The DCP (3000) is connected to a plurality of marine floating objects (eg, ships).

Some or all of the one or more floating floating object charging facilities may be the floating floating object charging facilities shown in FIGS. 3 to 5 . Hereinafter, for clarity of explanation, the embodiments of FIGS. 16 to 18 will be described in more detail as embodiments in which the charging facilities 10 for offshore floating matter of FIG. 3 are utilized.

The DCP (3000) includes a charging facility connection part (3100); conversion unit 3200; An output unit 3400 is included. In some embodiments, the DCP 3000 may further include a panel controller 3300. Since the DCP 3000 of FIG. 15 is similar to the DCP 2000 of FIG. 6, the differences will be mainly described.

Such a DCP (3000) may supply power to a plurality of onboard batteries through a land power connection part of each charging target. Some floating offshore objects among the plurality of floating offshore objects may have connection specifications different from those of other floating objects on the ocean. The connection specification is an external connection specification of the offshore floating object to be charged, and is a connection type and a connection voltage level of the land power connection unit.

For example, the DCP 3000 may simultaneously supply power to all inboard batteries of a ship having various connection specifications such as AC 220V, AC440V, AC690V, DC300V to DC1500V, DC 500V, DC 900V. On the other hand, the value of the connection type and connection voltage level of the above connection specifications are only examples, and it will be clearly understood by those skilled in the art that the embodiments of the DCP 3000 are not limited to the description of the above connection specifications.

16 is a schematic diagram of a DCP according to the 3-1 embodiment of the present invention.

Referring to FIG. 16 , the DCP 3000 may be configured to be connected to a single or multiple charging facilities 10 for floating offshore objects that output DC current. Then, the DCP (3000) has a DC connection part 3100 for receiving the DC current of the charging facility 10 for offshore floating objects connected thereto as the charging facility connection part 3100. The plurality of input terminals 3101, 3102, and 3103 of FIG. 16 are DC input terminals for receiving the DC current of the connected marine floating object charging facility 10.

The output unit 3400 includes a DC output unit 3440 and/or an AC output unit 3450. The DC output unit 3440 and the AC output unit 3450 may have a plurality of output terminals 3441 , 3442 , 3443 , 3444 , 3451 , 3452 , 3453 , 3454 , and 3455 .

The conversion unit 3200 is disposed on a DC supply path and an AC supply path. In some embodiments, the converter 3200 may include one or more switches in each of a DC supply path and an AC supply path.

In addition, when the conversion unit 3200 has the AC output unit 3450, it may include one or more DC/AC converters 3231. As shown in FIG. 16 , the conversion unit 3200 may include a plurality of DC/AC converters 3231A, 3231B, and 3231C. The input terminal of the DC/AC converter 3231 receives the discharge current of the connected offshore charging facility 10 through the DC bus bar 3232.

When the conversion unit 320 has the DC output unit 3440, it may include one or more DC/DC converters 3211. As shown in FIG. 16 , the conversion unit 3200 may include a plurality of DC/DC converters 3211. The input terminal of the DC/DC converter 3211 receives the discharge current of the connected offshore charging facility 10 through the DC bus bar 3212. The converted current of the DC/DC converter 3211 flows to the output unit 2440 through the capacitor 3215.

When a plurality of charging facilities 10 are connected, the DC bus bars 3232 and 3212 collect the discharge power of the plurality of offshore charging facilities 10 into one. The current collected in the DC bus bars 3232 and 3212 is redistributed by the converters 3231 and 3211 connected to the external marine float. Each of the DC/DC converters 3211 and the DC/AC converters 3231 are controlled by the controller 3300 to output voltage specifications corresponding to external connections of the marine floating object. The DCP (3000) is connected to a marine floating object having a DC type connection specification through a DC connection unit 3440 to deliver power of the floating floating object charging facility 10. The DCP (3000) is connected to an offshore floating object having an AC type connection specification through an AC connection unit 3450 to deliver power of the charging facility 10 for floating offshore objects. In the process of supplying power through the DCP (3000), the panel controller (3300) controls the DC/AC converter (3231) to supply AC voltage corresponding to the AC type connection specification of the offshore float, or DC/DC. The converter 3211 is controlled to supply a DC voltage corresponding to the DC type connection specification of the marine float.

Each converter may be connected one-to-one with an external floating object, and in the case of a floating object having the same voltage specification, one converter (3231, 3211) may be simultaneously connected to several floating objects.

Also, output terminals of at least one converter 3231 or 3211 may be connected to a plurality of output terminals. As shown in FIG. 16 , output terminals of at least one converter 3231 or 3211 may be connected to a plurality of output terminals 3443 , 3444 , 3454 , or 3445 .

In one embodiment, the DCP 3000 may further include a filter (not shown) between the DC/AC converter 3231 and the AC output unit 3450. Since the filter of the DCP (2000) operates similarly to the filter 233 of the charging facility 10, a detailed description thereof will be omitted.

Additionally, the DCP 3000 may further include a precharge circuit, similar to the DCP 2000 of FIG. 9 . The DCP 3000 is connected to the DC output terminal of the DC/DC converter 3211, directly or indirectly connected to the DC output terminal of the AC/DC converter 3231, or to the AC input terminal of the AC/DC converter 3231. It may further include a precharge circuit implemented in various forms such as being connected.

The panel controller 3300 individually adjusts the output voltage of the converter corresponding to each of the plurality of floating objects in the ocean, so that the voltage of the ship having various connection specifications such as AC 220V, AC440V, AC690V, DC300V to DC1500V, DC 500V, DC 900V, etc. It supplies power simultaneously to all of the onboard batteries. For example, the panel controller 3300 controls a converter on a path connected to a first offshore floating point having an AC220V connection specification to have a converted voltage of AC220V, and is connected to a second offshore floating point having an AC690V connection specification. The converter on the path can also be controlled to have a conversion voltage of AC690V.

17 is a schematic diagram of a DCP according to the 3-2 embodiment of the present invention.

Since the DCP 3000 of FIG. 17 is similar to the DCP 3000 of FIG. 16, the differences will be mainly described.

The DCP (3000) may be configured to be connected to one or more offshore charging facilities 10 that output AC current. Then, the DCP (3000) includes a DC connection part (3100) for receiving the AC current of one or more offshore floating object charging facilities (10) as the charging facility connection part (3100). The plurality of input terminals 3101, 3102, and 3103 of FIG. 17 are AC input terminals for receiving the AC current of the connected marine floating object charging facility 10.

The conversion unit 3200 may have an AC output unit 3450 and/or a DC output unit 3440.

When the conversion unit 3200 has the AC output unit 3450, it may include one or more AC/AC converters 3261. As shown in FIG. 17 , the converter 3200 may include a plurality of AC/AC converters 3261A and 3261B. The input terminal of the AC/AC converter 3261 receives the discharge current of the connected offshore charging facility 10 through the AC bus bar 3262.

When the conversion unit 3200 has the DC output unit 3440, it may include one or more AC/DC converters 3251. As shown in FIG. 17 , the converter 3200 may include a plurality of AC/DC converters 3251. The input terminal of the AC/DC converter 3251 receives the discharge current of the connected offshore charging facility 10 through the AC bus bar 3252.

When a plurality of charging facilities 10 are connected, the AC bus bars 3262 and 3252 collect the discharge power of the plurality of offshore charging facilities 10 into one. The current collected in the AC busbars 3262 and 3252 is redistributed by the converters 3261 and 3251 connected to the external marine float. Each AC/AC converter 3261 and AC/DC converter 3251 are controlled by the controller 3300 to output voltage specifications corresponding to the external connection of the marine floating object.

Each converter may be connected one-to-one with an external floating object, and in the case of a floating object having the same voltage specification, one converter (3261, 3251) may be simultaneously connected to several floating objects.

In one embodiment, the AC/AC converter 3261 may be a transformer or a back to back converter. The transformer may receive the AC current of the floating object charging facility 10 and convert it to correspond to the connection voltage level of the land power connection part of the floating object. The back-to-back converter converts the input AC current into an intermediate DC current and finally converts it into an AC current corresponding to the connection voltage level of the land power connection of the offshore float.

18 is a schematic diagram of a DCP according to the 3-3 embodiment of the present invention.

Since the DCP 3000 of FIG. 18 is similar to the DCP 3000 of FIG. 16, the differences will be mainly described.

Referring to FIG. 18 , the output unit 3400 of the DCP 3000 may further include a large capacity charging terminal 3455 and/or 3445. The AC output unit 3450 may include an output terminal 3455 for charging large-capacity AC power. The DC output unit 3440 may include an output terminal 3445 for charging large-capacity DC power. The at least one additional bus bar 3282 may be connected to output terminals of the converters 3231 and 3211.

The DCP 3000 may further include an additional bus bar 3282 for high-capacity AC charging. The additional bus bar 3282 for the high-capacity AC charging may be connected to an output terminal of one or more converters 323. The converted current of the converter 3231 is output to the AC output unit 3450 through the additional bus bar 3282.

The charging output terminal 3445 for the large-capacity DC power may be directly connected to the DC bus bar 3212 or indirectly connected through an additional DC bus bar. When the output voltage level of the DC charging facility 10 corresponds to the connection voltage level of the land power connection part of the marine floating object, power may be supplied through a serial line without going through a converter.

Meanwhile, the DCP 3000 indirectly connected to the DC bus bar 3212 and the charging output terminal 3445 for high-capacity DC power further includes an additional bus bar (not shown). The additional bus bar may be disposed between the output terminal of the DC/DC converter 3211 and the output terminal 3445 for high-capacity DC charging. For example, the additional bus bar may collect DC current from the DC capacitor 3215 and deliver it to the output terminal 3445 for high-capacity DC charging.

The amount of power of the current supplied from the output terminal (eg, 3455) for large capacity charging is greater than the amount of power of the current supplied from the output terminal (eg, 3451) connected to the converter (eg, 3231). Also, the amount of power supplied through the serial line is greater than the amount of power supplied through the converter. Large-capacity charging is possible through the supply path of the output terminals 3455 and 3445.

It will be apparent to those skilled in the art that the marine floating object charging facility 10 and system 1 may include other components not described herein. For example, the offshore filling station 10 may include network interfaces, input devices for data entry, and other hardware necessary for the operations described herein, including output devices for display, printing, or other presentation of data. may contain elements.

According to the embodiments described above Operations by the charging facility 10 and the system 1 for marine floating objects are at least partially implemented as computer programs and recorded on computer-readable recording media. For example, implemented together with a program product consisting of a computer-readable medium containing program code, which may be executed by a processor to perform any or all steps, operations, or processes described.

The computer-readable recording medium includes all types of recording and identification devices in which data readable by a computer is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage and identification devices, and the like. In addition, computer-readable recording media may be distributed in computer systems connected through a network, and computer-readable codes may be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing this embodiment can be easily understood by those skilled in the art to which this embodiment belongs.

The present invention reviewed above has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. However, such modifications should be considered within the technical protection scope of the present invention. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: Filling facility for marine floats
100: battery unit
110: battery cell assembly
120: fuel cell stack
200: power conversion unit
210: DC/DC converter unit
211 DC/DC Converters
212, 214: capacitor
213: precharge relay
215: precharge resistor
230: DC/AC converter unit
231: DC/AC converter
233: filter
240: DC connection
250: AC connection

Claims (11)

In the filling facility for marine floating matter,
a battery unit that stores power from a land power source;
a power conversion unit converting current from the land power source to store power in the battery unit or converting current from the battery unit to supply power to an external marine floating object;
a controller controlling at least one of an output voltage of the power conversion unit, charging power of the battery unit, and discharging power of the battery unit;
a connection unit outputting the current converted by the power conversion unit to a land power connection unit of the marine floating object; and
It includes a moving means in which the battery unit, the power conversion unit, and the controller are installed,
The power converter,
Including one or more DC / DC converter units each including a DC / DC converter for receiving DC current and outputting DC current,
Among the one or more DC/DC converter units, a DC/DC converter unit including at least one capacitor connected to an output terminal of the corresponding DC/DC converter unit is provided,
A charging facility for marine floating objects comprising a; DC/AC converter unit including a DC/AC converter that receives DC current and outputs AC current.
delete The method of claim 1,
The DC / DC converter unit receives the output current of the battery unit and outputs the converted DC current to the DC output unit or the DC / AC converter,
The DC/AC converter unit is configured to receive the output current of the DC/DC converter unit and output the converted current to the AC output unit.
The method of claim 1,
Wherein the battery unit includes at least one of a battery pack, a fuel cell stack, and a combination thereof.
The method according to claim 4, when the battery unit includes a combination of one or more battery packs and a fuel cell stack, the power conversion unit,
a first DC/DC converter unit including a first DC/DC converter connected to an output terminal of the one or more battery packs;
a second DC/DC converter unit including a second DC/DC converter connected to an output terminal of the fuel cell stack; and
A charging facility for marine floating objects, characterized in that it comprises a DC / AC converter that receives the DC current of the second DC / DC converter unit and outputs AC current.
The method of claim 5,
The output terminal of the first DC / DC converter and the output terminal of the second DC / DC converter are connected to one end of the capacitor,
The charging facility for marine floating objects, characterized in that the input end of the DC / AC converter unit can be connected to the other end of the capacitor.
The method of claim 5,
The first DC / DC converter includes a first capacitor and a second capacitor,
The output terminal of the first DC / DC converter is connected to one end of the first capacitor,
An output terminal of the one or more battery packs is connected to one end of the second capacitor and an input terminal of the first DC/DC converter is connected to the other terminal of the second capacitor;
The output terminal of the second DC / DC converter is connected to the input terminal of the first DC / DC converter through the second capacitor,
The charging facility for marine floating objects, characterized in that the input end of the DC / AC converter unit is connectable to the other end of the first capacitor.
The method of claim 1,
The controller controls the voltage or discharge current corresponding to the connection specification to the ship based on the voltage information of the ship received from the ship or received by user input and supplies it to the onboard battery of the ship Filling equipment for marine floating objects.
The method of claim 1,
The at least one DC/DC converter unit further includes any one of a precharge relay and a precharge switch, and a precharge resistor,
Any one of the precharge relay and the precharge switch and the precharge resistor are connected in parallel to at least one DC/DC converter or connected in parallel to a DC path between the capacitor and the connection unit. charging equipment
The method of claim 1,
The DC / AC converter unit further includes a filter,
The filter is a charging facility for marine floating objects, characterized in that connected to the output terminal of the DC / AC converter unit.
The method of claim 1,
The moving means is a charging facility for marine floating matter, characterized in that the moving means is a vehicle or a floating object at sea.

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