Multi-mode control system and power conversion ship

Abstract

The utility model provides a multi-mode control system and a power conversion ship. The multi-mode control system comprises an alternating current distribution board, a power conversion system, a photovoltaic system, a plurality of battery boxes, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit. The alternating-current distribution board is connected with the alternating-current shore power box through the first switch unit, the power conversion system is connected with the alternating-current distribution board and the battery boxes, and the photovoltaic system is connected to the alternating-current distribution board through the fourth switch unit. According to the scheme, the alternating current shore power box, the battery box, the power conversion system and the photovoltaic system are comprehensively considered to supply power under different working conditions, multiple power supply modes can be provided and switched among the multiple power supply modes, and the comprehensiveness of multi-mode control is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to control technical field especially is related to a multi -mode control system and the electric ship of changing. BACKGROUND

[0002] The multi -mode control of the AC distribution board is crucial to the overall performance and safety of the electric ship, and is an indispensable part of the modern ship power system. The design of the multi -mode control of the AC distribution board can improve system reliability, optimize energy management, ensure ship safety, improve operation flexibility and prolong equipment life, etc.

[0003] In the existing multi -mode control system, there is a lack of comprehensive consideration for different working conditions of the electric ship, and the multi -mode control system design has deficiencies. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a multi -mode control system and the electric ship of changing, can provide multiple power supply modes and switches among multiple power supply modes, guarantees the comprehensiveness of multi -mode control.

[0005] In the first aspect, the utility model provides a multi -mode control system, the multi -mode control system includes AC distribution board, power conversion system, photovoltaic system, multiple battery boxes, first switch unit, second switch unit, third switch unit and fourth switch unit;

[0006] The AC distribution board is connected with AC shore power box through the first switch unit;

[0007] One end of the power conversion system is connected to the AC distribution board through the second switch unit, and the other end of the power conversion system is connected to the multiple battery boxes through the third switch unit;

[0008] The photovoltaic system is connected to the AC distribution board through the fourth switch unit.

[0009] In an optional implementation, the power conversion system includes a daily inverter and a daily transformer;

[0010] One end of the daily inverter is connected to the multiple battery boxes through the third switch unit, and the other end is connected to the daily transformer;

[0011] The other end of the daily transformer is connected to the AC distribution board through the second switch unit.

[0012] In an optional implementation, the power conversion system includes a left power conversion system and a right power conversion system;

[0013] The second switch unit includes two second sub-switches, and the third switch unit includes two third sub-switches.

[0014] One end of the left power conversion system is connected to the AC distribution panel through one of the second sub-switches, and the other end is connected to the plurality of battery boxes through one of the third sub-switches.

[0015] One end of the right power conversion system is connected to the AC distribution panel through the other second sub-switch, and the other end is connected to the plurality of battery boxes through the other third sub-switch.

[0016] In an optional embodiment, the photovoltaic system includes a photovoltaic panel, a grid-connected inverter, and a photovoltaic grid-connected box.

[0017] One end of the grid-connected inverter is connected to the photovoltaic panel, and the other end is connected to the photovoltaic grid-connected box.

[0018] The other end of the photovoltaic grid-connected box is connected to the AC distribution panel through the fourth switch unit.

[0019] In an optional embodiment, the multi-mode control system further includes a main propulsion system and a fifth switch unit.

[0020] The main propulsion system is connected to the plurality of battery boxes through the fifth switch unit.

[0021] In an optional embodiment, the main propulsion system includes a left main propulsion system and a right main propulsion system.

[0022] The fifth switch unit includes two fifth sub-switches.

[0023] The left main propulsion system is connected to the plurality of battery boxes through one of the fifth sub-switches.

[0024] The right main propulsion system is connected to the plurality of battery boxes through the other fifth sub-switch.

[0025] In an optional embodiment, the multi-mode control system further includes a bow propulsion system and a sixth switch unit.

[0026] The bow propulsion system is connected to the plurality of battery boxes through the sixth switch unit.

[0027] In an optional embodiment, each of the battery boxes is connected to three connection lines through three contactors, and the power conversion system is connected to one of the three connection lines.

[0028] In an optional embodiment, the multi-mode control system further comprises a power management system connected with each of the battery boxes and the AC distribution panel.

[0029] In a second aspect, the utility model provides a battery replacement ship, including any preceding embodiment of multi mode control system.

[0030] The utility model provides a kind of multi-mode control system and battery replacement ship, the multi-mode control system includes AC distribution panel, power conversion system, photovoltaic system, multiple battery boxes, first switch unit, second switch unit, third switch unit and fourth switch unit.AC distribution panel is connected with AC shore power box by first switch unit, power conversion system is connected with AC distribution panel, multiple battery boxes respectively, photovoltaic system is connected to AC distribution panel by fourth switch unit.In the scheme, under different working conditions, respectively by AC shore power box, battery box, power conversion system and photovoltaic system power supply are comprehensively considered, can provide multiple power supply mode and switch between multiple power supply mode, guarantee the comprehensiveness of multi-mode control. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0032] Figure 1 It is one of the structural schematic diagram of multi-mode control system provided for this embodiment;

[0033] Figure 2 It is the second structural schematic diagram of multi-mode control system provided for this embodiment;

[0034] Figure 3 It is the third structural schematic diagram of multi-mode control system provided for this embodiment;

[0035] Figure 4 It is the fourth structural schematic diagram of multi-mode control system provided for this embodiment;

[0036] Figure 5 It is one of the circuit schematic diagram of multi-mode control system provided for this embodiment;

[0037] Figure 6 It is the second circuit schematic diagram of multi-mode control system provided for this embodiment;

[0038] Figure 7 It is the third circuit schematic diagram of multi-mode control system provided for this embodiment;

[0039] Figure 8 The fourth circuit schematic diagram of the multi-mode control system provided for the embodiment;

[0040] Figure 9 The fifth circuit schematic diagram of the multi-mode control system provided for the embodiment. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0042] Therefore, the detailed description of the embodiments of the present application provided in the drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0043] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Some embodiments of the present application will be described in detail below in connection with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] Please refer to Figure 1A structural block diagram of a multi-mode control system provided by the embodiment of the application, the multi-mode control system comprising an AC distribution board, a power conversion system, a photovoltaic system, a plurality of battery boxes, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit.

[0048] The AC distribution board is connected to the AC shore power box through the first switch unit. One end of the power system is connected to the AC distribution board through the second switch unit, and the other end of the power system is connected to the plurality of battery boxes through the third switch unit.

[0049] The photovoltaic system is connected to the AC distribution board through the fourth switch unit.

[0050] The first switch unit, the second switch unit, the third switch unit and the fourth switch unit can be composed of one or more circuit breakers or contactors.

[0051] On the basis of the above, when the ship is in a berthing working condition, the ship is connected to shore power in a shutdown working condition. In this working condition, the power conversion system and the photovoltaic system are in standby offline state, and the first switch unit between the AC distribution board and the AC shore power box is in an on state. In this working condition, the main propulsion system and the bow side propulsion system of the ship are not running and do not need power supply. Each battery box is in standby and disconnected state, and the battery replacement system is powered by the AC shore power box, so that each battery box on the ship can be replaced one by one.

[0052] In the embodiment, the multi-mode control system further comprises a power management system, which is connected to each battery box and the AC distribution board.

[0053] The power management system can monitor the state of each battery box. In the above working condition, the power management system does not perform power management on the AC distribution board.

[0054] In the case that the ship is in a berthing state but is not connected to the AC shore power box, the ship uses the battery pack on the ship body for power distribution.

[0055] In this working condition, the first switch unit is in a disconnected state, and the second switch unit between the power conversion system and the AC distribution board and the third switch unit between the power system and the battery box are in an on state.

[0056] At this time, the battery box supplies power to the AC distribution board through the power conversion system. In this working condition, the main propulsion system and the bow side propulsion system of the ship are not running and do not need power supply. The power management system monitors each battery box, and the power management system performs power management on the power conversion system, the photovoltaic system and the AC distribution board.

[0057] When the ship is at anchor, the AC distribution panel can also be powered by the power conversion system and the photovoltaic system, in which case the first switch unit is in an open state, and the second switch unit, the third switch unit and the fourth switch unit are in a closed state.

[0058] The multi-mode control system provided in the embodiment comprehensively considers various different working conditions, and is powered by the AC shore power box, the battery box, the power conversion system and the photovoltaic system, so that various power supply modes can be provided and switched between, thereby ensuring the comprehensiveness of multi-mode control.

[0059] Referring to Figure 2 In the embodiment, the power conversion system includes a left power conversion system and a right power conversion system, and the second switch unit includes two second sub-switches, and the third switch unit includes two third sub-switches.

[0060] One end of the left power conversion system is connected to the AC distribution panel through one of the second sub-switches, and the other end is connected to the plurality of battery boxes through one of the third sub-switches.

[0061] One end of the right power conversion system is connected to the AC distribution panel through the other second sub-switch, and the other end is connected to the plurality of battery boxes through the other third sub-switch.

[0062] In the embodiment, the battery box can be connected to the left power conversion system or the right power conversion system for power supply.

[0063] For example, the second sub-switch and the third sub-switch connected to the left power conversion system can be turned on, so that the left power conversion system is connected to the battery box to power the AC distribution panel. Alternatively, the second sub-switch and the third sub-switch connected to the right power conversion system can be turned on, so that the right power conversion system is connected to the battery box to power the AC distribution panel.

[0064] Referring to Figure 3 In the embodiment, the power conversion system includes a daily use inverter and a daily use transformer, and specifically, the left power conversion system and the right power conversion system each include a daily use inverter and a daily use transformer.

[0065] One end of the daily use inverter is connected to the plurality of battery boxes through the third switch unit, and the other end is connected to the daily use transformer.

[0066] The other end of the daily use transformer is connected to the AC distribution panel through the second switch unit.

[0067] Specifically, in the left power conversion system or the right power conversion system, one end of the daily use inverter is connected to the plurality of battery boxes through the third sub-switch, and the other end is connected to the daily use transformer. The other end of the daily use transformer is connected to the AC distribution panel through the second sub-switch.

[0068] The daily use inverter can be used to convert direct current into alternating current. In addition, the daily use inverter can also be used in an uninterruptible power supply system to convert direct current stored in the battery into alternating current to supply to the load when the mains power is cut off.

[0069] The daily use transformer is used to change the alternating voltage size by using the principle of electromagnetic induction, for voltage lifting or voltage reduction.

[0070] In this embodiment, the photovoltaic system includes a photovoltaic cell panel, a grid-connected inverter, and a photovoltaic grid-connected box. One end of the grid-connected inverter is connected to the photovoltaic cell panel, and the other end is connected to the photovoltaic grid-connected box. The other end of the photovoltaic grid-connected box is connected to the AC distribution panel through the fourth switch unit.

[0071] The photovoltaic cell panel is composed of a plurality of photovoltaic cells, and the plurality of photovoltaic cells are connected in series and parallel to generate the required voltage and current. The photovoltaic cell is made of semiconductor materials such as silicon, and can convert the light energy of sunlight into electrical energy.

[0072] The grid-connected inverter and the photovoltaic grid-connected box work together to convert the direct current generated by the photovoltaic cell panel into alternating current and smoothly integrate into the grid.

[0073] The grid-connected inverter is mainly used to convert the direct current generated by the photovoltaic cell panel into alternating current with the same frequency and phase as the grid, and to realize the connection with the grid. The photovoltaic grid-connected box is used to concentrate all electrical appliances of the photovoltaic system in one box, which is convenient for management and maintenance.

[0074] When it is necessary to provide electrical energy by using the photovoltaic system, the fourth switch unit between the photovoltaic system and the AC distribution panel can be turned on. In addition, the photovoltaic system can jointly provide electrical energy with the left power conversion system and / or the right power conversion system.

[0075] Please refer to Figure 4 In this embodiment, the multi-mode control system further includes a main propulsion system and a fifth switch unit, and the main propulsion system is connected to the plurality of battery boxes through the fifth switch unit.

[0076] In the case of needing to supply power to the main propulsion system, the fifth switch unit between the main propulsion system and the battery box is turned on, and the battery box supplies power to the main propulsion system.

[0077] In this embodiment, the main propulsion system includes a left main propulsion system and a right main propulsion system, and the second switch unit includes two fifth sub-switches.

[0078] The left main propulsion system is connected with the plurality of battery boxes through one of the fifth sub-switches, and the right main propulsion system is connected with the plurality of battery boxes through another fifth sub-switch.

[0079] In this way, each fifth sub-switch can be turned on respectively, so as to realize power supply for the connected left main propulsion system or right main propulsion system.

[0080] In the embodiment, the multi-mode control system further comprises a bow side propulsion system and a sixth switch unit, and the bow side propulsion system is connected with the plurality of battery boxes through the sixth switch unit.

[0081] In the case of needing to supply power for the bow side propulsion system, such as when the ship is in the berthing or unberthing working condition, the sixth switch unit can be turned on to supply power for the bow side propulsion system through the battery boxes.

[0082] In the embodiment, the number of the battery boxes is a plurality, such as six, eight, etc. Each battery box is connected to three connection lines through three contactors, and the power conversion system is connected to one of the three connection lines.

[0083] Among them, the plurality of battery boxes can be divided into a left battery box group and a right battery box group, and the left battery box group mainly supplies power for the left main propulsion system, the left power conversion system and the bow side propulsion system, while the right battery box group mainly supplies power for the right main propulsion system and the right power conversion system.

[0084] Please refer to Figure 5 The circuit principle schematic diagram of the multi-mode control system provided in the embodiment is shown, wherein six battery boxes BAT1 to BAT6 are shown schematically, wherein the battery box BAT1 is connected to the connection lines A1, B1 and C1 through the three contactors K1 to K3 respectively, the battery box BAT2 is connected to the connection lines A1, B1 and C1 through the three contactors K4 to K6 respectively, and the battery box BAT3 is connected to the connection lines A1, B1 and C1 through the three contactors K7 to K9 respectively.

[0085] In addition, the battery box BAT4 is connected to the connection lines A2, B2 and C2 through the three contactors K10 to K12 respectively, the battery box BAT5 is connected to the connection lines A2, B2 and C2 through the three contactors K13 to K15 respectively, and the battery box BAT6 is connected to the connection lines A2, B2 and C2 through the three contactors K16 to K18 respectively.

[0086] The left main propulsion system MCC1 is connected to the connection line A1 through the circuit breaker Q1, and then connected with the battery boxes BAT1 to BAT3. The bow side propulsion system BT-INV is connected to the connection line B1 through the circuit breaker Q2, and then connected with the battery boxes BAT1 to BAT3.

[0087] The left power conversion system (INV1, MT1) is connected to the connection line C1 through the circuit breaker Q3, and then connected to the battery boxes BAT1 to BAT3. The left power conversion system is also connected to the AC distribution board through the circuit breaker Q9.

[0088] The right main propulsion system MCC2 is connected to the connection line A2 through the circuit breaker Q6, and then connected to the battery boxes BAT4 to BAT6.

[0089] The right power conversion system (INV2, MT2) is connected to the connection line C2 through the circuit breaker Q4, and then connected to the battery boxes BAT4 to BAT6. The right power conversion system is also connected to the AC distribution board through the circuit breaker Q10.

[0090] In addition, the photovoltaic system (PV, PV-INV) is connected to the AC distribution board through the circuit breaker Q11. The AC distribution board is connected to the AC shore connection box AC-SC through the circuit breaker Q12.

[0091] On the basis of the above circuit connection relationship, the multi-mode control system in the embodiment can control switching to the following multiple power supply modes.

[0092] When the ship is in the mooring working condition, the AC distribution board is switched from the power-off state to the mode of being powered only by the AC shore connection box, as shown in FIG. 5, and the switching mode is as follows: Figure 5

[0093] Connect the AC shore connection box cable, and turn on the circuit breaker Q12.

[0094] This mode is the shore power mode, which belongs to the working condition of connecting shore power when the ship is at anchor. In this working condition, the left power conversion system, the right power conversion system and the photovoltaic system are in standby offline state, and the AC distribution board is only connected to the AC shore connection box. The left main propulsion system, the right main propulsion system and the bow propulsion system are not running and do not need power supply. All battery boxes are in standby and disconnected state, and the battery replacement system is powered by the AC shore connection box through the AC distribution board to perform individual battery replacement operation on each battery box. In this working condition, the power management system monitors the state of each battery box.

[0095] When the ship is in the mooring working condition and powered by the battery boxes, the AC distribution board is switched from the mode of being powered by the AC shore connection box to the mode of being powered by the battery boxes. Among them, the left power conversion system and the right power conversion system provide one active and one standby working mode. As shown in FIG. 6, when switching to the mode of being powered by the left power conversion system, the switching can be realized by the following mode: Figure 6

[0096] ​​First, disconnect the circuit breaker Q12, close the contactor K9, and then close the circuit breakers Q3 and Q9 in sequence. Enter the automatic power station program and use the power management system to manage the power of the automatic power station.

[0097] In this case, the battery box BAT3 supplies power to the AC distribution panel through the left power conversion system via the connection line C1. The photovoltaic system is in an off-grid state, and the left main propulsion system, the right main propulsion system, and the bow propulsion system are not running and do not need power supply. In this case, the power management system monitors the state of each battery box and manages the power of the power conversion system, the photovoltaic system, and the AC distribution panel. At this time, the power load of the battery box BAT3 is equal to the power load of the inverter power supply, i.e., the total power load.

[0098] As shown in Figure 7 , when switching to the mode of power supply via the right power conversion system, the switching can be achieved by the following way:

[0099] First, disconnect the circuit breaker Q12, close the contactor K12, and then close the circuit breakers Q4 and Q10 in sequence. Enter the automatic power station program and use the power management system to manage the power of the automatic power station.

[0100] In this case, the battery box BAT4 supplies power to the AC distribution panel through the right power conversion system via the connection line C2.

[0101] When the ship is in the mooring working condition, the AC distribution panel can be switched from the mode of power supply by the power conversion system to the mode of power supply by the power conversion system and the photovoltaic system together. As shown in Figure 8 , to supply power to the left power conversion system and the photovoltaic system, the switching mode is as follows:

[0102] First, select the photovoltaic gear of the synchronous switch, close the circuit breaker Q11 after synchronization is completed, and then enter the automatic power station program and perform automatic power station power management.

[0103] When the ship is in the mooring working condition, the AC distribution panel can be switched between the mode of power supply by the left power conversion system and the photovoltaic system together and the mode of power supply by the right power conversion system and the photovoltaic system together. The switching can be performed on the basis of the modes shown in Figure 9 , for example, when switching from left common power supply to right common power supply, the switching mode is as follows:

[0104] Close the contactor K12, close the circuit breaker Q4, select the power conversion system 2 gear of the synchronous switch, and close the circuit breaker Q10 after synchronization is completed. Disconnect the circuit breakers Q9 and Q3 in sequence, disconnect the contactor K9, enter the automatic power station program, and perform automatic power station power management.

[0105] In addition, when the main propulsion system is switched from the unpowered state to the powered state by the battery pack BAT1 and BAT6, the switching mode is as follows:

[0106] The left main propulsion local control box activates the key switch to be in the ON state, closes the contactor K1, and closes the MCU1 pre-charge circuit. After the pre-charge is completed, the MCU1 breaker Q1 is closed, and the MCU1 pre-charge circuit is disconnected.

[0107] The right main propulsion local control box activates the key switch to be in the ON state, closes the contactor K16, and closes the MCU2 pre-charge circuit. After the pre-charge is completed, the MCU2 breaker is closed, and the MCU pre-charge circuit is disconnected.

[0108] When the working condition of the battery pack BAT1 and BAT6 powering the MCU1 and MCU2 is switched to the working condition of the battery pack BAT2 and BAT5 powering the MCU1 and MCU2, the switching mode is as follows:

[0109] First, control the left and right main propulsion systems to reduce speed to the cut-off speed threshold. Disconnect the MCU1 breaker Q1, disconnect the contactor K1, and close the contactor K4. Close the MCU1 pre-charge circuit, close the MCU1 breaker Q1 after the pre-charge is completed, and disconnect the MCU1 pre-charge circuit. The MCU1 starts at speed.

[0110] Control the left and right main propulsion systems to reduce speed to the cut-off speed threshold. Disconnect the MCU2 breaker Q6, disconnect the contactor K16, and close the contactor K13. Close the MCU2 pre-charge circuit, close the MCU2 breaker Q6 after the pre-charge is completed, and disconnect the MCU2 pre-charge circuit. The MCU2 starts at speed.

[0111] When the working condition of the battery pack BAT2 and BAT5 powering the MCU1 and MCU2 is switched to the working condition of the battery pack BAT3 and BAT4 powering the MCU1 and MCU2, the switching mode needs to be switched in the following modes in sequence, and cannot be directly switched to the final mode:

[0112] Control the left and right main propulsion systems to reduce speed to the cut-off speed threshold. Disconnect the MCU1 breaker Q1, disconnect the contactor K4, close the contactor K7, close the MCU1 pre-charge circuit, close the MCU1 breaker Q1 after the pre-charge is completed, and disconnect the MCU1 pre-charge circuit. The MCU1 starts at speed.

[0113] Close the contactor K3, close the breaker Q3, select the reverse 1 gear position of the synchronous switch, close the breaker Q9 after synchronization is completed, and transfer the load of INV2 to INV1 (PMS automatically executes).

[0114] Control left and right main propulsion to reduce speed to "cutting package speed threshold"; open MCU2 circuit breaker Q6; open contactor K13; sequentially open circuit breakers Q10, Q4; open contactor K12; close contactor K10; close MCU2 pre-charge circuit; after pre-charging is completed, close MCU2 circuit breaker Q6, and open MCU2 pre-charge circuit; MCU2 speed start; close contactor K15; close circuit breaker Q4; select the second gear of the synchronous switch; after synchronization is completed, close circuit breaker Q10; INV1 load is transferred to INV2 (PMS automatically executes).

[0115] Sequentially open circuit breakers Q9, Q3; open contactor K3.

[0116] When the ship is in the berthing and unberthing working condition, the bow side propulsion system is switched from the unpowered state to the BAT2 powered state, and the switching mode is as follows:

[0117] Close contactor K5; close circuit breaker Q2.

[0118] When the ship is in the unberthing working condition and is switched to the normal navigation working condition, the bow side propulsion system is switched from the BAT2 powered state to the unpowered state, and the following steps are required:

[0119] The bow side propulsion car bell is reset to zero, and circuit breaker Q2 is opened; contactor K5 is opened.

[0120] When the ship is in the berthing working condition and is switched to the mooring working condition, the bow side propulsion system is switched from the BAT2 powered state to the unpowered state, and the following steps are required:

[0121] The main propulsion and the bow side propulsion car bell are reset to zero; circuit breakers Q1, Q2 and Q6 are opened; contactors K5, K7 and K15 are opened.

[0122] In the embodiment, on the basis of the provided multi-mode control system, the switching mode described above can be used to realize switching in different modes, and is suitable for power supply when the ship is in different working conditions.

[0123] In addition, the application also provides a battery replacement ship, which comprises the multi-mode control system in any one of the implementation manners described above, and the related technologies of the battery replacement ship can be referred to the description of the multi-mode control system. The battery replacement ship has the corresponding technical effects of the multi-mode control system, and the embodiment will not be described here.

[0124] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-mode control system, characterized by, The multi-mode control system comprises an AC distribution board, a power conversion system, a photovoltaic system, a plurality of battery boxes, a first switch unit, a second switch unit, a third switch unit and a fourth switch unit; The AC distribution board is connected with an AC shore connection box through the first switch unit; One end of the power conversion system is connected to the AC distribution board through the second switch unit, and the other end of the power conversion system is connected to the plurality of battery boxes through the third switch unit; The photovoltaic system is connected to the AC distribution board through the fourth switch unit.

2. The multi-mode control system of claim 1, wherein, The power conversion system comprises a daily use inverter and a daily use transformer; One end of the daily use inverter is connected to the plurality of battery boxes through the third switch unit, and the other end of the daily use inverter is connected to the daily use transformer; The other end of the daily use transformer is connected to the AC distribution board through the second switch unit.

3. The multi-mode control system of claim 1, wherein, The power conversion system comprises a left power conversion system and a right power conversion system; The second switch unit comprises two second sub-switches, and the third switch unit comprises two third sub-switches; One end of the left power conversion system is connected to the AC distribution board through one of the second sub-switches, and the other end of the left power conversion system is connected to the plurality of battery boxes through one of the third sub-switches; One end of the right power conversion system is connected to the AC distribution board through the other second sub-switch, and the other end of the right power conversion system is connected to the plurality of battery boxes through the other third sub-switch.

4. The multi-mode control system of claim 1, wherein, The photovoltaic system comprises a photovoltaic cell panel, a grid-connected inverter and a photovoltaic grid-connected box; One end of the grid-connected inverter is connected to the photovoltaic cell panel, and the other end of the grid-connected inverter is connected to the photovoltaic grid-connected box; The other end of the photovoltaic grid-connected box is connected to the AC distribution board through the fourth switch unit.

5. The multi-mode control system of claim 1, wherein, The multi-mode control system further comprises a main propulsion system and a fifth switch unit; The main propulsion system is connected with the plurality of battery boxes through the fifth switch unit.

6. The multi-mode control system of claim 5, wherein, The main propulsion system comprises a left main propulsion system and a right main propulsion system; The fifth switch unit comprises two fifth sub-switches; The left main propulsion system is connected with the plurality of battery boxes through one of the fifth sub-switches; The right main propulsion system is connected with the plurality of battery boxes through the other fifth sub-switch.

7. The multi-mode control system of claim 1, wherein, The multi-mode control system further comprises a bow propulsion system and a sixth switch unit; The bow propulsion system is connected with the plurality of battery boxes through the sixth switch unit.

8. The multi-mode control system of claim 1, wherein, Each of the battery boxes is connected to three connection lines through three contactors, and the power conversion system is connected to one of the three connection lines.

9. The multi-mode control system of claim 1, wherein, The multi-mode control system further comprises a power management system, which is connected with each of the battery boxes and the AC distribution board.

10. A battery replacement ship, characterized by, The multi-mode control system comprises any one of claims 1-9.

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