CN112104062A - Control device and method of ship power supply system and ship power supply system - Google Patents

Control device and method of ship power supply system and ship power supply system Download PDF

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Publication number
CN112104062A
CN112104062A CN202010794717.3A CN202010794717A CN112104062A CN 112104062 A CN112104062 A CN 112104062A CN 202010794717 A CN202010794717 A CN 202010794717A CN 112104062 A CN112104062 A CN 112104062A
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China
Prior art keywords
power supply
lithium battery
fuel cell
return
ship
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Granted
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CN202010794717.3A
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Chinese (zh)
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CN112104062B (en
Inventor
薛晓婷
赖普旭
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Gree Electric Appliances Inc of Zhuhai
Zhuhai Gree Energy Environment Technology Co Ltd
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Gree Electric Appliances Inc of Zhuhai
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
    • B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/32—Waterborne vessels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/30—The power source being a fuel cell
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/42—The network being an on-board power network, i.e. within a vehicle for ships or vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

The invention discloses a control device and a method of a ship power supply system and the ship power supply system, wherein the device comprises: the communication unit is used for acquiring power supply parameters of each power supply in a mode of communicating with a BMS management system of each power supply in a power supply group of the ship power supply system; the control unit is used for carrying out starting detection on the ship power supply system according to the power supply parameters of each power supply before the ship is started so as to control the ship to be started according to a starting detection result obtained by the starting detection; and/or before the ship returns, performing return detection on the ship power supply system according to the power supply parameters of each power supply, and controlling the ship to return according to a return detection result obtained by the return detection. According to the scheme, the problem of low power supply reliability of the unmanned ship power supply system can be solved, and the effect of improving the power supply reliability of the unmanned ship power supply system is achieved.

Description

Control device and method of ship power supply system and ship power supply system
Technical Field
The invention belongs to the technical field of power supply, particularly relates to a control device and method of a ship power supply system and the ship power supply system, and particularly relates to a starting, stopping and fault pre-judging device and method of an extended-range unmanned ship power supply system and the ship power supply system.
Background
The unmanned ship is used as a special tool for ocean exploration and carries various sensors such as temperature, salinity, density and the like. The test data needs to have the capability of uninterrupted and timely feedback, so that the unmanned ship power supply system at least needs to have the characteristic of high reliability, but the reliability of the existing unmanned ship power supply system is still lower.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control device and a control method of a ship power supply system and the ship power supply system, so as to solve the problem of low power supply reliability of the unmanned ship power supply system and achieve the effect of improving the power supply reliability of the unmanned ship power supply system.
The invention provides a control device of a ship power supply system, which comprises: a communication unit and a control unit; the communication unit is used for acquiring power supply parameters of each power supply in a mode of communicating with a BMS (battery management system) of each power supply in a power supply group of the ship power supply system; the control unit is used for carrying out starting detection on the ship power supply system according to the power supply parameters of each power supply before the ship is started so as to control the ship to be started according to a starting detection result obtained by the starting detection; and/or before the ship returns, performing return detection on the ship power supply system according to the power supply parameters of each power supply, and controlling the ship to return according to a return detection result obtained by the return detection.
Optionally, the power pack comprises: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source; under the condition that the power supply pack comprises the optical energy power supply, the power supply parameters of the optical energy power supply comprise: a condition that a photovoltaic panel surface of the optical energy source is blocked, and/or a power of the optical energy source; under the condition that the power supply pack comprises the lithium battery power supply, the power supply parameters of the lithium battery power supply comprise: the charging capacity of the lithium battery power supply and/or the discharging power of the lithium battery power supply; in the case where a fuel cell is included in the power supply pack, the power supply parameters of the fuel cell power supply include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
Optionally, the starting detection of the ship power supply system by the control unit according to the power supply parameter of each power supply includes: under the condition that the power supply pack comprises a lithium battery power supply, a fuel cell power supply and a light energy power supply, judging whether the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, judging whether the hydrogen capacity of the fuel cell power supply is larger than or equal to a set hydrogen capacity, and judging whether a blocking object is arranged on the surface of a photovoltaic panel of the light energy power supply; if the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity, and no shielding object is arranged on the surface of a photovoltaic panel of the light energy power supply, determining that a power pack of the ship power supply system meets a preset starting condition, and issuing a starting instruction to start the ship; and if the charging capacity of the lithium battery power supply is smaller than a first set charging capacity, the hydrogen capacity of the fuel battery power supply is smaller than a set hydrogen capacity, and/or no shielding object is arranged on the surface of the photovoltaic panel of the light energy power supply, determining that the power pack of the ship power supply system does not meet a preset starting condition, and maintaining the power pack of the ship power supply system.
Optionally, the detecting, by the control unit, a return trip of the ship power supply system according to the power supply parameter of each power supply includes: under the condition that the power supply pack comprises a fuel cell power supply, a lithium battery power supply and a light energy power supply, judging whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return condition according to the set sequence step by step; if at least one of the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meets a preset return-by-date condition, issuing a return-by-date instruction to make the ship return-by-date; and if at least one of the fuel cell, the lithium battery power supply and the light energy power supply has a fault, sending out an early warning message of the fault of the power supply set of the ship power supply system, and sending out an advance return instruction so as to enable the ship to return in advance.
Optionally, the step-by-step judgment, by the control unit, on whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return condition according to a set sequence includes: judging whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to a set hydrogen residual pressure; if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure, judging whether the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset energy required by the return process; if the hydrogen residual pressure of the fuel cell power supply is smaller than the set hydrogen residual pressure, determining that the fuel cell has a fault; if the hydrogen capacity of the fuel cell power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the fuel cell power supply accord with the preset on-time return process condition; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset on-time return process condition.
Optionally, the controlling unit judges step by step according to a set sequence whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply and the power supply parameter of the light energy power supply meet a preset return condition according to a period, and further includes: under the condition that the power supply parameters of the fuel cell power supply do not accord with the preset return-by-date condition, further judging whether the charging capacity of the lithium battery power supply is larger than or equal to a second set charging capacity; if the charging capacity of the lithium battery power supply is larger than or equal to the second set charging capacity, judging whether the discharging power of the lithium battery power supply is larger than or equal to the energy required by the preset return process; if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails; if the discharge power of the lithium battery power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the lithium battery power supply meet the preset scheduled return process condition; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset scheduled return process condition.
Optionally, the controlling unit judges step by step according to a set sequence whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply and the power supply parameter of the light energy power supply meet a preset return condition according to a period, and further includes: under the condition that the power supply parameters of the lithium battery power supply do not accord with preset scheduled return conditions, judging whether the power of the light energy power supply is larger than or equal to the energy required by the preset return; if the power of the optical energy power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the optical energy power supply meet the preset scheduled return process condition; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
In accordance with another aspect of the present invention, there is provided a ship power supply system, including: the control device for a ship power supply system described above.
In accordance with another aspect of the present invention, there is provided a method for controlling a ship power supply system of a ship power supply system, including: acquiring power supply parameters of each power supply by adopting a mode of communicating with a BMS (battery management system) of each power supply in a power supply group of the ship power supply system; before the ship is started, carrying out starting detection on the ship power supply system according to the power supply parameters of each power supply so as to control the ship to be started according to a starting detection result obtained by the starting detection; and/or before the ship returns, performing return detection on the ship power supply system according to the power supply parameters of each power supply, and controlling the ship to return according to a return detection result obtained by the return detection.
Optionally, the power pack comprises: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source; under the condition that the power supply pack comprises the optical energy power supply, the power supply parameters of the optical energy power supply comprise: a condition that a photovoltaic panel surface of the optical energy source is blocked, and/or a power of the optical energy source; under the condition that the power supply pack comprises the lithium battery power supply, the power supply parameters of the lithium battery power supply comprise: the charging capacity of the lithium battery power supply and/or the discharging power of the lithium battery power supply; in the case where a fuel cell is included in the power supply pack, the power supply parameters of the fuel cell power supply include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
Optionally, the detecting the start of the ship power supply system according to the power supply parameter of each power supply includes: under the condition that the power supply pack comprises a lithium battery power supply, a fuel cell power supply and a light energy power supply, judging whether the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, judging whether the hydrogen capacity of the fuel cell power supply is larger than or equal to a set hydrogen capacity, and judging whether a blocking object is arranged on the surface of a photovoltaic panel of the light energy power supply; if the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity, and no shielding object is arranged on the surface of a photovoltaic panel of the light energy power supply, determining that a power pack of the ship power supply system meets a preset starting condition, and issuing a starting instruction to start the ship; and if the charging capacity of the lithium battery power supply is smaller than a first set charging capacity, the hydrogen capacity of the fuel battery power supply is smaller than a set hydrogen capacity, and/or no shielding object is arranged on the surface of the photovoltaic panel of the light energy power supply, determining that the power pack of the ship power supply system does not meet a preset starting condition, and maintaining the power pack of the ship power supply system.
Optionally, the detecting the return trip of the ship power supply system according to the power supply parameter of each power supply includes: under the condition that the power supply pack comprises a fuel cell power supply, a lithium battery power supply and a light energy power supply, judging whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return condition according to the set sequence step by step; if at least one of the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meets a preset return-by-date condition, issuing a return-by-date instruction to make the ship return-by-date; and if at least one of the fuel cell, the lithium battery power supply and the light energy power supply has a fault, sending out an early warning message of the fault of the power supply set of the ship power supply system, and sending out an advance return instruction so as to enable the ship to return in advance.
Optionally, the step-by-step determining whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return-by-step condition according to a set sequence includes: judging whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to a set hydrogen residual pressure; if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure, judging whether the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset energy required by the return process; if the hydrogen residual pressure of the fuel cell power supply is smaller than the set hydrogen residual pressure, determining that the fuel cell has a fault; if the hydrogen capacity of the fuel cell power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the fuel cell power supply accord with the preset on-time return process condition; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset on-time return process condition.
Optionally, the step-by-step determining whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return-by-step condition according to a set sequence, further includes: under the condition that the power supply parameters of the fuel cell power supply do not accord with the preset return-by-date condition, further judging whether the charging capacity of the lithium battery power supply is larger than or equal to a second set charging capacity; if the charging capacity of the lithium battery power supply is larger than or equal to the second set charging capacity, judging whether the discharging power of the lithium battery power supply is larger than or equal to the energy required by the preset return process; if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails; if the discharge power of the lithium battery power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the lithium battery power supply meet the preset scheduled return process condition; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset scheduled return process condition.
Optionally, the step-by-step determining whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return-by-step condition according to a set sequence, further includes: under the condition that the power supply parameters of the lithium battery power supply do not accord with preset scheduled return conditions, judging whether the power of the light energy power supply is larger than or equal to the energy required by the preset return; if the power of the optical energy power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the optical energy power supply meet the preset scheduled return process condition; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
Therefore, according to the scheme provided by the invention, the problem of low power supply reliability of the unmanned ship power supply system is solved by issuing the start-stop instruction and prejudging the fault according to the battery characteristics and states of the photovoltaic battery, the fuel battery and the lithium battery, and the effect of improving the power supply reliability of the unmanned ship power supply system is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a control device of a ship power supply system according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a power supply system start-stop and fault pre-determination device for an extended range unmanned ship;
FIG. 3 is a schematic diagram illustrating an execution flow of start detection logic of an embodiment of the start-up and stop and fault pre-determination apparatus for a power supply system of an extended range unmanned ship;
fig. 4 is a schematic diagram illustrating an execution flow of a return detection logic of an embodiment of the power supply system start-stop and fault pre-determination device of the extended range unmanned ship.
Fig. 5 is a schematic flow chart illustrating an embodiment of a control method of the ship power supply system according to the present invention;
FIG. 6 is a schematic flow chart illustrating an embodiment of the method for detecting the start of the ship power supply system according to the power supply parameters of each power supply;
fig. 7 is a schematic flow chart illustrating an embodiment of a return detection of the ship power supply system according to the power supply parameter of each power supply in the method of the present invention;
FIG. 8 is a flowchart illustrating an embodiment of determining a power supply parameter of a fuel cell power source according to the method of the present invention;
FIG. 9 is a schematic flow chart illustrating an embodiment of determining a power supply parameter of a lithium battery power supply according to the method of the present invention;
fig. 10 is a flowchart illustrating an embodiment of determining a power supply parameter of an optical energy power source according to the method of the present invention.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
1-a photovoltaic cell; 2-a lithium battery; 3-low power air cooling fuel cell; 4-a first boost power converter; 5-a bidirectional power converter; 6-a second boost power converter; 7-a high-pressure gas cylinder; 8-a primary pressure reducing valve; 9-a two-stage pressure reducing valve; 102-a communication unit; 104-control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, there is provided a control apparatus of a ship power supply system. Referring to fig. 1, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The control device of the ship power supply system can be applied to the power supply control aspect of ships, particularly unmanned ships, and the power supply control device of the unmanned ships can comprise: a communication unit 102 and a control unit 104. The communication unit 102 may be a CAN communication line for communicating with a BMS management system of each power supply in the power supply group of the ship power supply system. The control unit 104 may be a controller of a fault warning center of the ship power supply system. The fault early warning center consists of a data acquisition instrument and a communication module, can acquire and send action instructions, is internally provided with a high-integration-level electric control board and the communication module, and has high precision and quick response.
In an optional example, the communication unit 102 may be configured to obtain the power supply parameter of each power supply in the ship power supply system by communicating with a BMS management system of each power supply in the power supply group.
Optionally, the power pack may include: more than two power supplies. Two or more power supplies, may include: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source.
Wherein, in the case that the power supply pack may include a light energy power supply, the power supply parameters of the light energy power supply may include: the condition that the surface of the photovoltaic panel of the light energy power source is shielded (namely the condition that whether a shielding object exists on the surface of the photovoltaic panel of the light energy power source) and/or the power of the light energy power source.
In the case that the power supply pack may include a lithium battery power supply, the power supply parameters of the lithium battery power supply may include: the charging capacity of the lithium battery power supply, and/or the discharging power of the lithium battery power supply.
In the case that the power supply pack may include a fuel cell, the power supply parameters of the fuel cell power supply may include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
For example: the light energy cell may comprise a photovoltaic cell 1, a photo-thermal cell, etc., the lithium battery power source may comprise a lithium battery 2, and the fuel cell 3 may comprise an air-cooled fuel cell. The multi-source collaborative power supply system with the photovoltaic power, the fuel cell and the lithium battery is adopted, the problem that the traditional single energy power supply is low in reliability is solved, the power supply reliability of the unmanned ship power supply system is improved, and the error-free action is ensured.
For example: the unmanned ship power supply system can be composed of a photovoltaic battery 1 and a BMS management system, a lithium battery 2 and the BMS management system, an air-cooled fuel battery 3, a first boost DC/DC power converter 4, a second boost DC/DC power converter 6, a bidirectional DC/DC power converter 5, an energy management module, a sailing ship steering power device and other devices and test exploration equipment. Wherein, the air-cooled fuel cell 3 comprises a fan and a controller thereof, a primary pressure reducing valve 8, a secondary pressure reducing valve 9, a pressure sensor, a hydrogen supply pipeline and a hydrogen storage bottle. Compared with a water-cooling fuel cell, the air-cooling fuel cell 3 has obvious advantages in a low-power supply module, and has the advantages of simple system, high integration level, small volume and low self power consumption.
In an optional example, the control unit 104 may be configured to perform start detection on the ship power supply system according to the power supply parameter of each power supply before starting the ship, so as to control the ship to start according to a start detection result obtained by the start detection.
Optionally, before the ship is started, the control unit 104 performs start detection on the ship power supply system according to the power supply parameter of each power supply, and may include:
the control unit 104 may be further configured to, when the power supply pack may include a lithium battery power supply, a fuel cell power supply, and a light energy power supply, determine whether a charging capacity of the lithium battery power supply is greater than or equal to a first set charging capacity, determine whether a hydrogen capacity of the fuel cell power supply is greater than or equal to a set hydrogen capacity, and determine whether a blocking object is located on a photovoltaic panel surface of the light energy power supply.
The control unit 104 may be further configured to determine that the power pack of the ship power supply system meets a preset starting condition and issue a starting instruction to start the ship if the charging capacity of the lithium battery power supply is greater than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is greater than or equal to a set hydrogen capacity, and no shielding object is located on the surface of the photovoltaic panel of the light energy power supply.
The control unit 104 may be further configured to determine that the power pack of the ship power supply system does not meet a preset start condition and maintain the power pack of the ship power supply system if the charging capacity of the lithium battery power supply is smaller than a first set charging capacity, the hydrogen capacity of the fuel battery power supply is smaller than a set hydrogen capacity, and/or no shielding object is present on the surface of the photovoltaic panel of the light energy power supply, and then re-determine whether the maintained power pack of the ship power supply system meets the preset start condition, that is, re-determine whether the charging capacity of the lithium battery power supply is greater than or equal to the first set charging capacity, determine whether the hydrogen capacity of the fuel battery power supply is greater than or equal to the set hydrogen capacity, and determine whether a shielding object is present on the surface of the photovoltaic panel of the light energy power supply, and issue a start instruction until the maintained power pack of the ship power supply system meets the preset start condition To start the vessel.
For example: before starting, the fault early warning center needs to start and primarily diagnose the three power supplies through the BMS management system of the photovoltaic cell 1, the BMS management system of the lithium battery 2 and the pressure sensor. The default three types of batteries have good states, no faults and high reliability. The method needs to have the three conditions simultaneously to start: (1) the charging capacity of the lithium battery 2 is more than or equal to 90 percent and is close to a full-charge state theoretically; (2) the capacity of the hydrogen prepared by the fuel cell 3 is more than or equal to 90 percent and is close to a gas-filled state; (3) the photovoltaic panel of the photovoltaic cell 1 is not shielded, the covering is completely cleaned, and the radiation area is the maximum theoretical value. In all three cases, the ship body can execute tasks and can be started to run to a specified position. If one is abnormal, the starting instruction cannot be issued; and after the actions of charging, hydrogenation, cleaning and the like are carried out, the navigation command can be executed.
Therefore, the power supply pack is detected before the ship is started, so that the starting instruction is issued to start the ship under the condition that the power supply pack meets the preset starting condition, and the power supply reliability of the ship starting trip can be guaranteed. And moreover, the fault pre-mixing data can be led into the control center in advance, the judgment data is directly fed back, calculation is not needed, the response time is saved, and the response speed is high.
In an optional example, the control unit 104 may be further configured to perform a return detection on the ship power supply system according to the power supply parameter of each power supply before the ship returns, so as to control the ship to return according to a return detection result obtained by the return detection.
Therefore, by presetting a fault critical value in advance and according to power supply parameters such as battery characteristics and states of more than two power supplies, starting and stopping instruction issuing and fault prejudgment are carried out, and the safety and reliability of a power supply system can be ensured; moreover, the data acquisition does not need to be calculated, the response speed is high, and misoperation can be prevented. Therefore, judgment logic classification is carried out aiming at starting and return, the ship body can be ensured to run to an observation point and return according to time, the control logic is simple, a large amount of calculation is omitted, and the ship recovery period is controllable.
Optionally, before the ship returns, the control unit 104 performs return detection on the ship power supply system according to the power supply parameter of each power supply, and may include:
the control unit 104 may be further configured to, under the condition that the power supply set may include a fuel cell power supply, a lithium battery power supply, and a light energy power supply, gradually determine whether a power supply parameter of the fuel cell power supply, a power supply parameter of the lithium battery power supply, and a power supply parameter of the light energy power supply meet a preset return-to-return-by-date condition.
More optionally, the step-by-step judging, by the control unit 104, whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return condition according to a preset schedule may include: the process of determining the power supply parameter of the fuel cell power supply may specifically be as follows:
the control unit 104 may be further configured to determine whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to a set hydrogen residual pressure.
The control unit 104 may be further configured to determine whether the hydrogen capacity of the fuel cell power supply is greater than or equal to a preset energy required for the return stroke if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure. And if the hydrogen residual pressure of the fuel cell power supply is less than the set hydrogen residual pressure, determining that the fuel cell has a fault.
The control unit 104 may be further configured to determine that a power supply parameter of the fuel cell power supply meets a preset scheduled return condition if the hydrogen capacity of the fuel cell power supply is greater than or equal to a preset energy required for return; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset return process condition according to the period, and further judging whether the power supply parameters of the lithium battery power supply accord with the preset return process condition according to the period.
For example: the fuel cell 3 performs the preferential judgment as the power source having the highest energy density among the three types of power sources, that is, performs judgment one: and judging whether the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10 percent. If the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10 percent, whether the residual hydrogen capacity of the fuel cell 3 can provide the energy required by the return process is continuously judged, because the unmanned ship cruises at a fixed point, the return route is fixed, the consumed power is a fixed value, and the advance judgment can be carried out according to the relation between the power provided by the fuel cell and the hydrogen residual pressure. If the residual hydrogen capacity of the fuel cell 3 can provide the energy required by the return stroke, determining that the residual hydrogen capacity of the fuel cell 3 is enough to support the return stroke of the unmanned ship, namely the residual hydrogen capacity Pfc of the fuel cell 3 is more than or equal to the energy Preturn required by the return stroke, and issuing an instruction by the main control console to return the stroke; otherwise, the lithium battery 2 is judged.
Therefore, through the power energy density, whether the fuel cell can support the ship return is preferentially judged, the fuel cell is used for supplying energy for the return under the condition that the fuel cell can support the ship return, other batteries are judged under the condition that the fuel cell cannot support the ship return, and the reliability of the energy supply for the return can be ensured.
Further optionally, the step-by-step judging, by the control unit 104, whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return condition according to a preset schedule, may further include: the process of judging the power supply parameters of the lithium battery power supply specifically comprises the following steps:
the control unit 104 may be further configured to further determine whether the charging capacity of the lithium battery power supply is greater than or equal to a second set charging capacity when the power supply parameter of the fuel cell power supply does not meet a preset return-to-date condition.
The control unit 104 may be further configured to determine whether the discharge power of the lithium battery power supply is greater than or equal to a preset energy required for the return trip if the charge capacity of the lithium battery power supply is greater than or equal to the second set charge capacity; and if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails.
The control unit 104 may be further specifically configured to determine that the power supply parameter of the lithium battery power supply meets a preset scheduled return condition if the discharge power of the lithium battery power supply is greater than or equal to a preset energy required for the return; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset return process condition according to the period, and further judging whether the power supply parameters of the light energy power supply accord with the preset return process condition according to the period.
For example: if the remaining hydrogen capacity of the fuel cell 3 cannot support the power required for the return stroke (i.e. the remaining hydrogen capacity of the fuel cell 3 cannot provide the energy required for the return stroke), then the process proceeds to the second judgment: the SOC state of the lithium battery 2 is collected through a BMS management system of the lithium battery 2, and whether the SOC of the lithium battery 2 is more than or equal to 10% is judged. And if the SOC of the lithium battery 2 is more than or equal to 10%, judging whether the discharging power Pdisscharge of the lithium battery 2 is more than or equal to the return power consumption Preturn. And if the discharge power Pdisscharge of the lithium battery 2 is larger than or equal to the return power consumption Preturn, starting a return mode, namely, issuing an instruction by the master console to return. And if the SOC of the lithium battery 2 is less than 10%, determining that the lithium battery 2 has faults. And if the discharge power Pdisscharge of the lithium battery 2 is less than the return power consumption Preturn, further judging the light energy power supply. The fuel cell over-discharge is solved by taking the power supply state of the fuel cell as the pre-judgment state through pre-judgment, the fuel cell is ensured not to be damaged and operated, and the recovery rate of the fuel cell is increased.
Therefore, the lithium battery is judged under the condition that the fuel battery cannot support ship return, the lithium battery is selected to supply energy for return voyage under the condition that the lithium battery can support ship return voyage, the light energy power supply is judged under the condition that the lithium battery cannot support ship return voyage, and the reliability of the energy supply for return voyage can be guaranteed.
Still further optionally, the step-by-step judging, by the control unit 104, whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return condition according to a set sequence, may further include: the process of determining the power supply parameter of the light energy power supply may specifically be as follows:
the control unit 104 may be further configured to determine whether the power of the optical energy power source is greater than or equal to a preset energy required for a return trip when the power supply parameter of the lithium battery power source does not meet a preset scheduled return trip condition.
The control unit 104 may be further configured to determine that the power supply parameter of the optical energy power supply meets a preset scheduled return condition if the power of the optical energy power supply is greater than or equal to a preset energy required for a return; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
For example: if the discharge power Pdischarge of the lithium battery 2 is less than the return power consumption Preturn, a third judgment is made: namely, the photovoltaic cell 1 is judged whether the power Ppv of the photovoltaic cell 1 is greater than or equal to the return power Preturn. And if the power Ppv of the photovoltaic cell 1 is larger than or equal to the return power Preturn, starting a return mode, namely, issuing an instruction by the master control console to return. If the power Ppv of the photovoltaic cell 1 < the return power Preturn, step 51 is executed.
Therefore, the lithium battery is judged under the condition that the fuel battery and the lithium battery can not support ship return, the light energy power supply is judged, the light energy power supply is selected to supply power for return under the condition that the light energy power supply can support ship return, the light energy power supply is determined to have a fault under the condition that the light energy power supply can not support ship return power supply, and the reliability of return power supply can be ensured.
The control unit 104 may be further specifically configured to determine that the power supply set of the ship power supply system meets a preset return-by-date condition if at least one of the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meets the preset return-by-date condition, and issue a return-by-date instruction, so as to return the ship by date. Wherein, make boats and ships return by schedule, can include: and selecting one power supply determined from the fuel cell power supply, the lithium battery power supply and the light energy power supply as a return energy supply power supply according to a set return period.
For example: and (3) ship return detection: and detecting and selecting the power supply state according to the sequence of the power density from high to low. The return journey according to the period is selected under the condition that the power supply state of any power supply in the power supply group meets the return journey condition according to the period, so that the stability and reliability of a power supply system can be ensured, and the unmanned ship returns according to the specified period and the specified route.
The control unit 104 may be further configured to determine that the power pack of the ship power supply system is faulty, send an early warning message about the fault of the power pack of the ship power supply system, and issue an advance return instruction, so as to return the ship in advance, if at least one of the fuel cell, the lithium battery power supply, and the optical energy power supply is faulty. Wherein, make boats and ships return journey in advance, can include: and under the condition that the set return period is not reached, two power supplies or three power supplies which are any combination of the fuel cell power supply, the lithium battery power supply and the light energy power supply are selected as return energy supply power supplies.
For example: fault detection of a power supply system can detect several types of faults: failure one, the hydrogen excess pressure is less than 10%; the second failure, the SOC of the lithium battery is less than 10 percent; and thirdly, reporting the fault by the photovoltaic cell, and obtaining extremely low power. When one of the three faults occurs, the unmanned ship can return ahead to ensure that the power supply system is stable and reliable, and the unmanned ship returns according to a specified route.
Through a large number of tests, the technical scheme of the invention is adopted, the faults are pre-judged in advance according to the battery characteristics and states of the photovoltaic battery, the fuel battery and the lithium battery, the judgment data and the program are preset to the control center in advance, the data are directly fed back, the later-stage calculation is not needed, the response time can be saved, the power supply reliability is ensured, and the unmanned ship is ensured to safely return to the journey without being abandoned.
According to an embodiment of the invention, a ship power supply system corresponding to the control device of the ship power supply system is also provided. The ship power supply system may include: the control device for a ship power supply system described above.
Besides the characteristics of long endurance and high reliability, the unmanned ship power supply system has high construction cost due to the high cost of the carrying sensor, and can ensure that a ship can safely return to the cruise cycle and the recovery cycle. Therefore, the method is particularly important for various fault pre-judgment and response settings of the power supply system. In addition, in order to reduce the marine pollution, the energy needs to be clean, environment-friendly and zero-carbon. Therefore, the introduction of photovoltaic and fuel cells as main power sources and lithium cells as auxiliary power sources is the future development direction of the special exploration ship.
Because the three energy sources of photovoltaic, fuel cell and lithium battery all have the power supply instability that leads to because of self characteristic, therefore the start-stop and the trouble of power supply system are prejudged, should combine the energy characteristic to carry out reasonable setting.
In some schemes, in order to ensure the reliability of power supply, the diesel engine is necessary and not cancelled. The introduction of photovoltaics and fuel cells is intended to ensure reliability, reduce pollution or zero pollution in the absence of a diesel engine (which is highly polluting) as a power source. The unmanned ship has requirements on load, all designs need to be light, the power density of the fuel cell is higher than that of other energy sources, and the same generated power is small in size and light in weight.
In some embodiments, a power control system including a photovoltaic cell and a lithium battery is provided, and a security module is introduced as a security communication module, but the communication module is not explicitly described as sending a specific signal and a response action corresponding to the signal to a console.
In other schemes, the fuel consumption is determined through monitoring the air route, and the driving mode is formulated. But the power supply source is only a diesel generator, so that the pollution is large; the power supply system does not relate to energy coordination, and the energy is single.
In other schemes, the motor is controlled to rotate by judging whether a fault is issued or not, but the fault definition is not written and how to prejudge, so that whether the scheme can be realized or not is questionable.
In an optional embodiment, the scheme of the invention provides a starting, stopping and fault pre-judging device for a power supply system of an extended-range unmanned ship, fault pre-judgment is carried out in advance, judgment data and a program are preset to a control center in advance, data are directly fed back, post-calculation is not needed, response time can be saved, power supply reliability is guaranteed, and safe return of the unmanned ship is guaranteed without abandon.
In an optional example, according to the scheme of the invention, the start-stop instruction issuing and the fault prejudgment are carried out according to the battery characteristics and the states of the photovoltaic battery, the fuel battery and the lithium battery, the acquired data do not need to be calculated, the response speed is high, and the misoperation can be prevented. By presetting the fault critical value in advance, the safety and the reliability of the power supply system can be ensured. Therefore, judgment logic classification is carried out aiming at starting and return, the ship body can be ensured to run to an observation point and return according to time, the control logic is simple, a large amount of calculation is omitted, and the ship recovery period is controllable.
Specifically, the scheme of the invention adopts a multi-source collaborative power supply system of photovoltaic, fuel cell and lithium battery, solves the problem of low power supply reliability of the traditional single energy source, increases the power supply reliability of the unmanned ship power supply system, and ensures error-free action.
Specifically, according to the scheme provided by the invention, the fault pre-mixing data is led into the control center in advance, and the judgment data is directly fed back without calculation, so that the response time is saved, and the response speed is high. That is to say, the signal response is direct, no post-processing is needed, and the response speed is high.
Specifically, the scheme of the invention takes the power supply state of the fuel cell as the pre-judgment state, solves the problem of over-discharge of the fuel cell, ensures that the fuel cell does not damage and operate, and increases the recovery rate of the fuel cell.
In an alternative embodiment, a specific implementation process of the scheme of the present invention can be exemplarily described with reference to the examples shown in fig. 2 to 4.
In an alternative example, the unmanned ship power supply system provided by the scheme of the invention can be composed of a photovoltaic cell 1 and a BMS management system, a lithium battery 2 and a BMS management system, an air-cooled fuel cell 3, a first boost DC/DC power converter 4, a second boost DC/DC power converter 6, a bidirectional DC/DC power converter 5, an energy management module, a sailing ship steering power device and other devices and test exploration equipment. Wherein, the air-cooled fuel cell 3 comprises a fan and a controller thereof, a primary pressure reducing valve 8, a secondary pressure reducing valve 9, a pressure sensor, a hydrogen supply pipeline and a hydrogen storage bottle. Compared with a water-cooling fuel cell, the air-cooling fuel cell 3 has obvious advantages in a low-power supply module, and has the advantages of simple system, high integration level, small volume and low self power consumption. The fault early warning center consists of a data acquisition instrument and a communication module, can acquire and send action instructions, is internally provided with a high-integration-level electric control board and the communication module, and has high precision and quick response.
Fig. 2 is a schematic structural diagram of an embodiment of the start-stop and fault pre-determination device for the power supply system of the extended range unmanned ship. As shown in fig. 2, the start-stop and fault pre-determination device for the extended-range unmanned ship power supply system may include: the system comprises a photovoltaic cell 1, a lithium battery 2, a fuel cell (such as a low-power air-cooled fuel cell 3), a first boost power converter (such as a first boost DC/DC power converter) 4, a bidirectional power converter 5 (such as a bidirectional DC/DC power converter), a second boost power converter (such as a second boost DC/DC power converter) 6, a high-pressure gas cylinder 7, a secondary pressure reducing valve 9, a primary pressure reducing valve 8 and a fault early warning center.
In the example shown in fig. 2, the photovoltaic cell 1 is connected to a first boost power converter (e.g., a first boost DC/DC power converter) 4. The first boost power converter (e.g., first boost DC/DC power converter) 4 is connected to the fault warning center, and the first boost power converter (e.g., first boost DC/DC power converter) 4 is also connected to the fault warning center through a BMS Can communication line. The lithium battery 2 is bidirectionally coupled to a bidirectional power converter 5, such as a bidirectional DC/DC power converter. A bidirectional power converter 5, such as a bidirectional DC/DC power converter, is bidirectionally connected to the fault pre-warning center. The lithium battery 2 and the bidirectional power converter 5 (e.g., a bidirectional DC/DC power converter) are also connected to the fault pre-warning center through BMS Can communication lines, respectively. The high-pressure gas bottle 7 is connected to a fuel cell (such as a low-power air-cooled fuel cell 3) through a primary pressure reducing valve 8 and a secondary pressure reducing valve 9, the fuel cell (such as the low-power air-cooled fuel cell 3) is connected to a second boost power converter (such as a second boost DC/DC power converter) 6, and the second boost power converter (such as the second boost DC/DC power converter) 6 is connected to a fault early warning center. The high-pressure gas bottle 7 is also connected to a fault early warning center through a pressure sensor Can communication line. And the fault early warning center is used for executing starting and returning control.
Fig. 3 is a schematic diagram illustrating an execution flow of start detection logic of an embodiment of the start-up and stop and fault pre-determination device for the extended range unmanned ship power supply system. As shown in fig. 3, the start-up detection process of the start-up and stop and fault pre-determination device of the extended range unmanned ship power supply system may include:
step 11, ship starting inspection: it is judged whether the charge capacity of the lithium battery 2 (i.e., the lithium battery SOC) is greater than or equal to 90%, whether the hydrogen capacity of the fuel cell 3 is greater than or equal to 90%, and whether there is a shading on the photovoltaic panel surface of the photovoltaic cell 1. If the charging capacity of the lithium battery 2 (i.e., the lithium battery SOC) is greater than or equal to 90%, the hydrogen capacity of the fuel cell 3 is greater than or equal to 90%, and the photovoltaic panel surface of the photovoltaic cell 1 is not blocked, step 12 is performed. If the charging capacity of the lithium battery 2 (i.e. the SOC of the lithium battery) is less than 90%, the hydrogen capacity of the fuel cell 3 is less than 90%, and/or there is a blockage on the surface of the photovoltaic panel of the photovoltaic cell 1, step 13 is performed.
And step 12, issuing a starting instruction and starting the ship.
And step 13, if the charging capacity (namely the SOC) of the lithium battery 2 is less than 90%, charging the lithium battery 2. If the hydrogen capacity of the fuel cell 3 is less than 90%, the fuel cell 3 is hydrogenated. And if the surface of the photovoltaic panel of the photovoltaic cell 1 is shielded, cleaning the shielding object on the surface of the photovoltaic panel of the photovoltaic cell 1.
Specifically, before starting, the fault early warning center needs to start and primarily diagnose the three types of power supplies through the BMS management system of the photovoltaic cell 1, the BMS management system of the lithium battery 2 and the pressure sensor. The default three types of batteries have good states, no faults and high reliability. The method needs to have the three conditions simultaneously to start: (1) the charging capacity of the lithium battery 2 is more than or equal to 90 percent and is close to a full-charge state theoretically; (2) the capacity of the hydrogen prepared by the fuel cell 3 is more than or equal to 90 percent and is close to a gas-filled state; (3) the photovoltaic panel of the photovoltaic cell 1 is not shielded, the covering is completely cleaned, and the radiation area is the maximum theoretical value. In all three cases, the ship body can execute tasks and can be started to run to a specified position. If one is abnormal, the starting instruction cannot be issued; and after the actions of charging, hydrogenation, cleaning and the like are carried out, the navigation command can be executed.
Fig. 4 is a schematic diagram illustrating an execution flow of a return detection logic of an embodiment of the power supply system start-stop and fault pre-determination device of the extended range unmanned ship. As shown in fig. 4, the return detection process of the start-stop and fault pre-determination device of the extended range unmanned ship power supply system may include:
step 21, ship return detection: and detecting and selecting the power supply state according to the sequence of the power density from high to low. The fuel cell 3 performs the preferential judgment as the power source having the highest energy density among the three types of power sources, that is, performs judgment one: and judging whether the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10 percent. If the hydrogen residual pressure of the fuel cell 3 is equal to or greater than 10%, the step 22 is executed, and if the hydrogen residual pressure of the fuel cell 3 is less than 10%, the step 31 is executed.
And step 22, if the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10%, continuously judging whether the residual hydrogen capacity of the fuel cell 3 can provide the energy required by the return stroke, wherein the return route is fixed and the consumed power is a fixed value because the unmanned ship cruises at a fixed point, and the advance pre-judgment can be carried out according to the relationship between the power provided by the fuel cell and the hydrogen residual pressure. Step 23 is performed if the remaining hydrogen capacity of the fuel cell 3 is able to provide the energy required for the return stroke, otherwise step 24 is performed.
And step 23, if the residual hydrogen capacity of the fuel cell 3 is enough to support the return stroke of the unmanned ship, namely the residual hydrogen capacity Pfc of the fuel cell 3 is more than or equal to the required energy Preturn of the return stroke, the main control console issues an instruction to return the ship.
Step 24, if the remaining hydrogen capacity of the fuel cell 3 cannot support the power required for the return stroke (i.e. the remaining hydrogen capacity of the fuel cell 3 cannot provide the energy required for the return stroke), then the method proceeds to the second judgment: the SOC state of the lithium battery 2 is collected through a BMS management system of the lithium battery 2, and whether the SOC of the lithium battery 2 is more than or equal to 10% is judged. If the SOC of the lithium battery 2 is more than or equal to 10%, the step 25 is executed, and if the SOC of the lithium battery 2 is less than 10%, the step 41 is executed.
And 25, judging whether the discharging power Pdisscharge of the lithium battery 2 is larger than or equal to the return power consumption Preturn if the SOC of the lithium battery 2 is larger than or equal to 10%. And if the discharge power Pdisscharge of the lithium battery 2 is larger than or equal to the return power consumption Preturn, starting a return mode, namely, issuing an instruction by the master console to return. If the discharging power Pdischarge of the lithium battery 2 is less than the return power consumption Preturn, step 26 is executed.
And step 26, if the discharge power Pdisscharge of the lithium battery 2 is less than the return power consumption Preturn, judging three: namely, the photovoltaic cell 1 is judged whether the power Ppv of the photovoltaic cell 1 is greater than or equal to the return power Preturn. And if the power Ppv of the photovoltaic cell 1 is larger than or equal to the return power Preturn, starting a return mode, namely, issuing an instruction by the master control console to return. If the power Ppv of the photovoltaic cell 1 < the return power Preturn, step 51 is executed.
Under the condition that the return flight still cannot be judged in the three types, the system needs to start a two-to-two combination mode or a three-power-supply simultaneous power supply mode.
Step 31, determining that the power supply system has a fault one: the residual pressure of hydrogen is less than 10 percent.
Step 41, determining that the power supply system has a fault II: the SOC of the lithium battery is less than 10 percent.
Step 51, determining that the power supply system has a fault three: the photovoltaic cell reports failure and the power is extremely low.
That is, fault detection: the power supply system has several faults, namely a fault I, and the residual pressure of hydrogen is less than 10%; the second failure, the SOC of the lithium battery is less than 10 percent; the photovoltaic cell reports the fault, and the power is extremely low; when one of the three faults occurs, the unmanned ship can return ahead to ensure that the power supply system is stable and reliable, and the unmanned ship returns according to a specified route.
It should be noted that all the judgment critical values in the above embodiment are not unique parameters, and can be adjusted according to actual situations. The photovoltaic cell 1, the lithium battery 2 and the low-power air-cooled fuel cell 3 are used as one of the embodiments. The battery type can be replaced by a photo-thermal battery, other types of energy storage batteries and large and small power air-cooling and water-cooling fuel batteries. The combination is not limited, but can be controlled by using the above embodiment.
Since the processing and functions of the ship of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 1, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention can ensure the safety and reliability of a power supply system by issuing start-stop instructions and pre-judging faults according to the battery characteristics and states of the photovoltaic battery, the fuel battery and the lithium battery; and the data acquisition does not need to be calculated, the response speed is high, and misoperation can be prevented.
According to an embodiment of the present invention, a method for controlling a ship power supply system of a ship power supply system is also provided, as shown in fig. 5, which is a schematic flow chart of an embodiment of the method of the present invention. The control method of the ship power supply system can be applied to the power supply control of ships, particularly unmanned ships, and the power supply control method of the unmanned ships can comprise the following steps: step S110 to step S130.
At step S110, a power supply parameter of each power supply in the power supply group of the ship power supply system is obtained by communicating with the BMS management system of each power supply.
Optionally, the power pack may include: more than two power supplies; two or more power supplies, may include: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source.
Wherein, in the case that the power supply pack may include a light energy power supply, the power supply parameters of the light energy power supply may include: the condition that the surface of the photovoltaic panel of the light energy power source is shielded (namely the condition that whether a shielding object exists on the surface of the photovoltaic panel of the light energy power source) and/or the power of the light energy power source.
In the case that the power supply pack may include a lithium battery power supply, the power supply parameters of the lithium battery power supply may include: the charging capacity of the lithium battery power supply, and/or the discharging power of the lithium battery power supply.
In the case that the power supply pack may include a fuel cell, the power supply parameters of the fuel cell power supply may include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
For example: the light energy cell may comprise a photovoltaic cell 1, a photo-thermal cell, etc., the lithium battery power source may comprise a lithium battery 2, and the fuel cell 3 may comprise an air-cooled fuel cell. The multi-source collaborative power supply system with the photovoltaic power, the fuel cell and the lithium battery is adopted, the problem that the traditional single energy power supply is low in reliability is solved, the power supply reliability of the unmanned ship power supply system is improved, and the error-free action is ensured.
For example: the unmanned ship power supply system can be composed of a photovoltaic battery 1 and a BMS management system, a lithium battery 2 and the BMS management system, an air-cooled fuel battery 3, a first boost DC/DC power converter 4, a second boost DC/DC power converter 6, a bidirectional DC/DC power converter 5, an energy management module, a sailing ship steering power and other methods and test exploration equipment. Wherein, the air-cooled fuel cell 3 comprises a fan and a controller thereof, a primary pressure reducing valve 8, a secondary pressure reducing valve 9, a pressure sensor, a hydrogen supply pipeline and a hydrogen storage bottle. Compared with a water-cooling fuel cell, the air-cooling fuel cell 3 has obvious advantages in a low-power supply module, and has the advantages of simple system, high integration level, small volume and low self power consumption.
In step S120, before the ship is started, the ship power supply system is subjected to start detection according to the power supply parameter of each power supply, so as to control the ship to start according to a start detection result obtained by the start detection.
Optionally, in step S120, before the ship is started, a specific process of performing start detection on the ship power supply system according to the power supply parameter of each power supply may be referred to in the following exemplary description.
With reference to the flowchart of fig. 6 showing an embodiment of detecting the start of the ship power supply system according to the power supply parameter of each power supply in the method of the present invention, a specific process of detecting the start of the ship power supply system according to the power supply parameter of each power supply in step S120 is further described, which may include: step S210 to step S230.
Step S210, under the condition that the power supply set may include a lithium battery power supply, a fuel battery power supply, and a light energy power supply, determining whether a charging capacity of the lithium battery power supply is greater than or equal to a first set charging capacity, determining whether a hydrogen capacity of the fuel battery power supply is greater than or equal to a set hydrogen capacity, and determining whether a blocking object is present on a photovoltaic panel surface of the light energy power supply.
Step S220, if the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity, and no shielding object is arranged on the surface of the photovoltaic panel of the light energy power supply, determining that the power pack of the ship power supply system meets a preset starting condition, and issuing a starting instruction to start the ship.
Step S230, if the charging capacity of the lithium battery power source is less than a first set charging capacity, the hydrogen capacity of the fuel cell power supply is smaller than the set hydrogen capacity, and/or the photovoltaic panel surface of the light energy power supply is not provided with a shield, determining that the power pack of the ship power supply system does not meet a preset starting condition, maintaining the power pack of the ship power supply system, and then re-determining whether the maintained power pack of the ship power supply system meets the preset starting condition, namely, whether the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity is judged again, whether the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity is judged, and judging whether a shelter exists on the surface of the photovoltaic panel of the light energy power supply, and issuing a starting instruction to start the ship until the maintained power supply pack of the ship power supply system meets a preset starting condition.
For example: before starting, the fault early warning center needs to start and primarily diagnose the three power supplies through the BMS management system of the photovoltaic cell 1, the BMS management system of the lithium battery 2 and the pressure sensor. The default three types of batteries have good states, no faults and high reliability. The method needs to have the three conditions simultaneously to start: (1) the charging capacity of the lithium battery 2 is more than or equal to 90 percent and is close to a full-charge state theoretically; (2) the capacity of the hydrogen prepared by the fuel cell 3 is more than or equal to 90 percent and is close to a gas-filled state; (3) the photovoltaic panel of the photovoltaic cell 1 is not shielded, the covering is completely cleaned, and the radiation area is the maximum theoretical value. In all three cases, the ship body can execute tasks and can be started to run to a specified position. If one is abnormal, the starting instruction cannot be issued; and after the actions of charging, hydrogenation, cleaning and the like are carried out, the navigation command can be executed.
Therefore, the power supply pack is detected before the ship is started, so that the starting instruction is issued to start the ship under the condition that the power supply pack meets the preset starting condition, and the power supply reliability of the ship during starting and going out can be ensured; and moreover, the fault pre-mixing data can be led into the control center in advance, the judgment data is directly fed back, calculation is not needed, the response time is saved, and the response speed is high.
And/or, in step S130, before the ship returns, performing a return detection on the ship power supply system according to the power supply parameter of each power supply, so as to control the ship to return according to a return detection result obtained by the return detection.
Therefore, by presetting a fault critical value in advance and according to power supply parameters such as battery characteristics and states of more than two power supplies, starting and stopping instruction issuing and fault prejudgment are carried out, and the safety and the reliability of a power supply system can be ensured. Moreover, the data acquisition does not need to be calculated, the response speed is high, and misoperation can be prevented. Therefore, judgment logic classification is carried out aiming at starting and return, the ship body can be ensured to run to an observation point and return according to time, the control logic is simple, a large amount of calculation is omitted, and the ship recovery period is controllable.
Optionally, in step S130, before the ship returns, a specific process of detecting the return of the ship power supply system according to the power supply parameter of each power supply may be referred to as the following exemplary description.
With reference to the schematic flow chart of an embodiment of the method of the present invention shown in fig. 7, which is used for performing a return detection on the ship power supply system according to the power supply parameter of each power supply, further describing a specific process of performing a return detection on the ship power supply system according to the power supply parameter of each power supply in step S130, the specific process may include: step S310 to step S330.
Step S310, under the condition that the power supply group can comprise a fuel cell power supply, a lithium battery power supply and a light energy power supply, judging whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return condition according to the set sequence step by step.
More optionally, the specific process of step S310 of gradually determining whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet the preset return-by-date condition or not according to the set sequence may include: and judging the power supply parameters of the fuel cell power supply.
The following further describes a specific process of determining the power supply parameter of the fuel cell power supply with reference to a flowchart of an embodiment of determining the power supply parameter of the fuel cell power supply in the method of the present invention shown in fig. 8, where the specific process may include: step S410 to step S430.
And step S410, judging whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure.
Step S420, if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure, judging whether the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset energy required by the return process; and if the hydrogen residual pressure of the fuel cell power supply is less than the set hydrogen residual pressure, determining that the fuel cell has a fault.
Step S430, if the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset return energy, determining that the power supply parameters of the fuel cell power supply meet the preset on-schedule return condition; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset return process condition according to the period, and further judging whether the power supply parameters of the lithium battery power supply accord with the preset return process condition according to the period.
For example: the fuel cell 3 performs the preferential judgment as the power source having the highest energy density among the three types of power sources, that is, performs judgment one: and judging whether the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10 percent. If the hydrogen residual pressure of the fuel cell 3 is more than or equal to 10 percent, whether the residual hydrogen capacity of the fuel cell 3 can provide the energy required by the return process is continuously judged, because the unmanned ship cruises at a fixed point, the return route is fixed, the consumed power is a fixed value, and the advance judgment can be carried out according to the relation between the power provided by the fuel cell and the hydrogen residual pressure. If the residual hydrogen capacity of the fuel cell 3 can provide the energy required by the return stroke, determining that the residual hydrogen capacity of the fuel cell 3 is enough to support the return stroke of the unmanned ship, namely the residual hydrogen capacity Pfc of the fuel cell 3 is more than or equal to the energy Preturn required by the return stroke, and issuing an instruction by the main control console to return the stroke; otherwise, the lithium battery 2 is judged.
Therefore, through the power energy density, whether the fuel cell can support the ship return is preferentially judged, the fuel cell is used for supplying energy for the return under the condition that the fuel cell can support the ship return, other batteries are judged under the condition that the fuel cell cannot support the ship return, and the reliability of the energy supply for the return can be ensured.
Further optionally, the specific process of step S310 of gradually determining whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet the preset return condition by time may further include: and judging the power supply parameters of the lithium battery power supply.
The following further describes a specific process of determining the power supply parameter of the lithium battery power supply with reference to a schematic flow chart of an embodiment of determining the power supply parameter of the lithium battery power supply in the method of the present invention shown in fig. 9, where the specific process may include: step S510 to step S530.
Step S510, when the power supply parameter of the fuel cell power supply does not meet the preset return-by-time condition, further determining whether the charge capacity of the lithium battery power supply is greater than or equal to a second set charge capacity.
Step S520, if the charging capacity of the lithium battery power supply is larger than or equal to the second set charging capacity, judging whether the discharging power of the lithium battery power supply is larger than or equal to the preset energy required by the return trip; and if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails.
Step S530, if the discharge power of the lithium battery power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the lithium battery power supply accord with the preset return process condition according to the period; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset return process condition according to the period, and further judging whether the power supply parameters of the light energy power supply accord with the preset return process condition according to the period.
For example: if the remaining hydrogen capacity of the fuel cell 3 cannot support the power required for the return stroke (i.e. the remaining hydrogen capacity of the fuel cell 3 cannot provide the energy required for the return stroke), then the process proceeds to the second judgment: the SOC state of the lithium battery 2 is collected through a BMS management system of the lithium battery 2, and whether the SOC of the lithium battery 2 is more than or equal to 10% is judged. And if the SOC of the lithium battery 2 is more than or equal to 10%, judging whether the discharging power Pdisscharge of the lithium battery 2 is more than or equal to the return power consumption Preturn. And if the discharge power Pdisscharge of the lithium battery 2 is larger than or equal to the return power consumption Preturn, starting a return mode, namely, issuing an instruction by the master console to return. And if the SOC of the lithium battery 2 is less than 10%, determining that the lithium battery 2 has faults. And if the discharge power Pdisscharge of the lithium battery 2 is less than the return power consumption Preturn, further judging the light energy power supply. The fuel cell over-discharge is solved by taking the power supply state of the fuel cell as the pre-judgment state through pre-judgment, the fuel cell is ensured not to be damaged and operated, and the recovery rate of the fuel cell is increased.
Therefore, the lithium battery is judged under the condition that the fuel battery cannot support ship return, the lithium battery is selected to supply energy for return voyage under the condition that the lithium battery can support ship return voyage, the light energy power supply is judged under the condition that the lithium battery cannot support ship return voyage, and the reliability of the energy supply for return voyage can be guaranteed.
Still further optionally, the step S310 may further include a specific process of gradually determining whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return condition according to a set sequence, and the specific process may further include: and judging the power supply parameters of the light energy power supply.
The following further describes a specific process of determining the power supply parameter of the optical energy power source with reference to a flowchart of an embodiment of determining the power supply parameter of the optical energy power source in the method of the present invention shown in fig. 10, which may include: step S610 to step S620.
Step S610, under the condition that the power supply parameter of the lithium battery power supply does not meet the preset scheduled return condition, determining whether the power of the optical energy power supply is greater than or equal to the preset energy required for the return.
Step S620, if the power of the optical energy power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the optical energy power supply accord with the preset return process condition according to the period; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
For example: if the discharge power Pdischarge of the lithium battery 2 is less than the return power consumption Preturn, a third judgment is made: namely, the photovoltaic cell 1 is judged whether the power Ppv of the photovoltaic cell 1 is greater than or equal to the return power Preturn. And if the power Ppv of the photovoltaic cell 1 is larger than or equal to the return power Preturn, starting a return mode, namely, issuing an instruction by the master control console to return. If the power Ppv of the photovoltaic cell 1 < the return power Preturn, step 51 is executed.
Therefore, the lithium battery is judged under the condition that the fuel battery and the lithium battery can not support ship return, the light energy power supply is judged, the light energy power supply is selected to supply power for return under the condition that the light energy power supply can support ship return, the light energy power supply is determined to have a fault under the condition that the light energy power supply can not support ship return power supply, and the reliability of return power supply can be ensured.
Step S320, if at least one of the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meets the preset return condition according to the period, determining that the power supply set of the ship power supply system meets the preset return condition according to the period, and issuing a return instruction according to the period to enable the ship to return according to the period. Wherein, make boats and ships return by schedule, can include: and selecting one power supply determined from the fuel cell power supply, the lithium battery power supply and the light energy power supply as a return energy supply power supply according to a set return period.
For example: and (3) ship return detection: and detecting and selecting the power supply state according to the sequence of the power density from high to low. The return journey according to the period is selected under the condition that the power supply state of any power supply in the power supply group meets the return journey condition according to the period, so that the stability and reliability of a power supply system can be ensured, and the unmanned ship returns according to the specified period and the specified route.
And step S330, if at least one of the fuel cell, the lithium battery power supply and the light energy power supply has a fault, determining that the power supply pack of the ship power supply system has a fault, sending out an early warning message of the fault of the power supply pack of the ship power supply system, and sending out an advance return instruction so as to enable the ship to return in advance. Wherein, make boats and ships return journey in advance, can include: and under the condition that the set return period is not reached, two power supplies or three power supplies which are any combination of the fuel cell power supply, the lithium battery power supply and the light energy power supply are selected as return energy supply power supplies.
For example: fault detection of a power supply system can detect several types of faults: failure one, the hydrogen excess pressure is less than 10%; the second failure, the SOC of the lithium battery is less than 10 percent; the photovoltaic cell reports the fault, and the power is extremely low; when one of the three faults occurs, the unmanned ship can return ahead to ensure that the power supply system is stable and reliable, and the unmanned ship returns according to a specified route.
Since the processing and functions implemented by the method of this embodiment substantially correspond to the embodiments, principles, and examples of the ship power supply system, reference may be made to the related descriptions in the foregoing embodiments without being detailed in the description of this embodiment.
Through a large number of tests, the technical scheme of the embodiment is adopted, the starting and the return are judged according to the battery characteristics and the states of the photovoltaic battery, the fuel battery and the lithium battery, the fault critical value is preset in advance, the fault is pre-judged in advance, the ship can be guaranteed to run to an observation point and return according to time, the control logic is simple, a large number of calculations are omitted, and the ship recovery period is controllable.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (15)

1. A control device for a ship power supply system, comprising: a communication unit and a control unit; wherein the content of the first and second substances,
the communication unit is used for acquiring power supply parameters of each power supply in a mode of communicating with a BMS management system of each power supply in a power supply group of the ship power supply system;
the control unit is used for carrying out starting detection on the ship power supply system according to the power supply parameters of each power supply before the ship is started so as to control the ship to be started according to a starting detection result obtained by the starting detection; and/or the presence of a gas in the gas,
and before the ship returns, performing return detection on the ship power supply system according to the power supply parameters of each power supply, and controlling the ship to return according to a return detection result obtained by the return detection.
2. The control device for a ship power supply system according to claim 1, wherein the power supply pack includes: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source;
under the condition that the power supply pack comprises the optical energy power supply, the power supply parameters of the optical energy power supply comprise: a condition that a photovoltaic panel surface of the optical energy source is blocked, and/or a power of the optical energy source;
under the condition that the power supply pack comprises the lithium battery power supply, the power supply parameters of the lithium battery power supply comprise: the charging capacity of the lithium battery power supply and/or the discharging power of the lithium battery power supply;
in the case where a fuel cell is included in the power supply pack, the power supply parameters of the fuel cell power supply include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
3. The control device of the ship power supply system according to claim 2, wherein the control unit performs start-up detection on the ship power supply system according to the power supply parameter of each power supply, and the start-up detection includes:
under the condition that the power supply pack comprises a lithium battery power supply, a fuel cell power supply and a light energy power supply, judging whether the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, judging whether the hydrogen capacity of the fuel cell power supply is larger than or equal to a set hydrogen capacity, and judging whether a blocking object is arranged on the surface of a photovoltaic panel of the light energy power supply;
if the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity, and no shielding object is arranged on the surface of a photovoltaic panel of the light energy power supply, determining that a power pack of the ship power supply system meets a preset starting condition, and issuing a starting instruction to start the ship;
and if the charging capacity of the lithium battery power supply is smaller than a first set charging capacity, the hydrogen capacity of the fuel battery power supply is smaller than a set hydrogen capacity, and/or no shielding object is arranged on the surface of the photovoltaic panel of the light energy power supply, determining that the power pack of the ship power supply system does not meet a preset starting condition, and maintaining the power pack of the ship power supply system.
4. The control device of the ship power supply system according to claim 2, wherein the control unit performs a return detection on the ship power supply system according to the power supply parameter of each power supply, and the return detection includes:
under the condition that the power supply pack comprises a fuel cell power supply, a lithium battery power supply and a light energy power supply, judging whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return condition according to the set sequence step by step;
if at least one of the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meets a preset return-by-date condition, issuing a return-by-date instruction to make the ship return-by-date;
and if at least one of the fuel cell, the lithium battery power supply and the light energy power supply has a fault, sending out an early warning message of the fault of the power supply set of the ship power supply system, and sending out an advance return instruction so as to enable the ship to return in advance.
5. The control device of the marine power supply system according to claim 4, wherein the control unit determines whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet a preset return condition by time step by step according to a set sequence, and includes:
judging whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to a set hydrogen residual pressure;
if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure, judging whether the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset energy required by the return process; if the hydrogen residual pressure of the fuel cell power supply is smaller than the set hydrogen residual pressure, determining that the fuel cell has a fault;
if the hydrogen capacity of the fuel cell power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the fuel cell power supply accord with the preset on-time return process condition; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset on-time return process condition.
6. The control device of a marine power supply system according to claim 5, wherein the control unit determines step by step whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return-by-step condition according to a set sequence, further comprising:
under the condition that the power supply parameters of the fuel cell power supply do not accord with the preset return-by-date condition, further judging whether the charging capacity of the lithium battery power supply is larger than or equal to a second set charging capacity;
if the charging capacity of the lithium battery power supply is larger than or equal to the second set charging capacity, judging whether the discharging power of the lithium battery power supply is larger than or equal to the energy required by the preset return process; if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails;
if the discharge power of the lithium battery power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the lithium battery power supply meet the preset scheduled return process condition; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset scheduled return process condition.
7. The control device of a marine power supply system according to claim 6, wherein the control unit determines step by step whether the power supply parameter of the fuel cell power supply, the power supply parameter of the lithium battery power supply, and the power supply parameter of the light energy power supply meet a preset return-by-step condition according to a set sequence, further comprising:
under the condition that the power supply parameters of the lithium battery power supply do not accord with preset scheduled return conditions, judging whether the power of the light energy power supply is larger than or equal to the energy required by the preset return;
if the power of the optical energy power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the optical energy power supply meet the preset scheduled return process condition; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
8. A marine power supply system, comprising: control device of a marine vessel power supply system according to any one of claims 1 to 7.
9. A method of controlling a marine power supply system, comprising:
acquiring power supply parameters of each power supply by adopting a mode of communicating with a BMS (battery management system) of each power supply in a power supply group of the ship power supply system;
before the ship is started, carrying out starting detection on the ship power supply system according to the power supply parameters of each power supply so as to control the ship to be started according to a starting detection result obtained by the starting detection; and/or the presence of a gas in the gas,
and before the ship returns, performing return detection on the ship power supply system according to the power supply parameters of each power supply, and controlling the ship to return according to a return detection result obtained by the return detection.
10. The method for controlling a ship power supply system according to claim 9, wherein the power supply pack includes: a lithium battery power supply; further comprising: a light energy power source and/or a fuel cell source;
under the condition that the power supply pack comprises the optical energy power supply, the power supply parameters of the optical energy power supply comprise: a condition that a photovoltaic panel surface of the optical energy source is blocked, and/or a power of the optical energy source;
under the condition that the power supply pack comprises the lithium battery power supply, the power supply parameters of the lithium battery power supply comprise: the charging capacity of the lithium battery power supply and/or the discharging power of the lithium battery power supply;
in the case where a fuel cell is included in the power supply pack, the power supply parameters of the fuel cell power supply include: the residual pressure of hydrogen carried by the fuel cell and/or the hydrogen capacity of the hydrogen cylinder carried by the fuel cell.
11. The method for controlling the ship power supply system according to claim 10, wherein the detecting the start of the ship power supply system according to the power supply parameter of each power supply comprises:
under the condition that the power supply pack comprises a lithium battery power supply, a fuel cell power supply and a light energy power supply, judging whether the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, judging whether the hydrogen capacity of the fuel cell power supply is larger than or equal to a set hydrogen capacity, and judging whether a blocking object is arranged on the surface of a photovoltaic panel of the light energy power supply;
if the charging capacity of the lithium battery power supply is larger than or equal to a first set charging capacity, the hydrogen capacity of the fuel battery power supply is larger than or equal to a set hydrogen capacity, and no shielding object is arranged on the surface of a photovoltaic panel of the light energy power supply, determining that a power pack of the ship power supply system meets a preset starting condition, and issuing a starting instruction to start the ship;
and if the charging capacity of the lithium battery power supply is smaller than a first set charging capacity, the hydrogen capacity of the fuel battery power supply is smaller than a set hydrogen capacity, and/or no shielding object is arranged on the surface of the photovoltaic panel of the light energy power supply, determining that the power pack of the ship power supply system does not meet a preset starting condition, and maintaining the power pack of the ship power supply system.
12. The method for controlling the ship power supply system according to claim 10, wherein the detecting the return trip of the ship power supply system according to the power supply parameter of each power supply comprises:
under the condition that the power supply pack comprises a fuel cell power supply, a lithium battery power supply and a light energy power supply, judging whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return condition according to the set sequence step by step;
if at least one of the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meets a preset return-by-date condition, issuing a return-by-date instruction to make the ship return-by-date;
and if at least one of the fuel cell, the lithium battery power supply and the light energy power supply has a fault, sending out an early warning message of the fault of the power supply set of the ship power supply system, and sending out an advance return instruction so as to enable the ship to return in advance.
13. The method for controlling the marine power supply system according to claim 12, wherein the step-by-step judgment of whether the power supply parameters of the fuel cell power supply, the lithium battery power supply and the light energy power supply meet the preset return-by-step conditions according to the set sequence comprises:
judging whether the hydrogen residual pressure of the fuel cell power supply is greater than or equal to a set hydrogen residual pressure;
if the hydrogen residual pressure of the fuel cell power supply is greater than or equal to the set hydrogen residual pressure, judging whether the hydrogen capacity of the fuel cell power supply is greater than or equal to the preset energy required by the return process; if the hydrogen residual pressure of the fuel cell power supply is smaller than the set hydrogen residual pressure, determining that the fuel cell has a fault;
if the hydrogen capacity of the fuel cell power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the fuel cell power supply accord with the preset on-time return process condition; and if the hydrogen capacity of the fuel cell power supply is smaller than the preset energy required by the return process, determining that the power supply parameters of the fuel cell power supply do not accord with the preset on-time return process condition.
14. The method for controlling a marine power supply system according to claim 13, wherein whether the power supply parameters of the fuel cell power supply, the lithium battery power supply, and the light energy power supply meet a preset return-by-time condition is determined step by step according to a set sequence, further comprising:
under the condition that the power supply parameters of the fuel cell power supply do not accord with the preset return-by-date condition, further judging whether the charging capacity of the lithium battery power supply is larger than or equal to a second set charging capacity;
if the charging capacity of the lithium battery power supply is larger than or equal to the second set charging capacity, judging whether the discharging power of the lithium battery power supply is larger than or equal to the energy required by the preset return process; if the charging capacity of the lithium battery power supply is smaller than the second set charging capacity, determining that the lithium battery power supply fails;
if the discharge power of the lithium battery power supply is larger than or equal to the energy required by the preset return process, determining that the power supply parameters of the lithium battery power supply meet the preset scheduled return process condition; and if the discharge power of the lithium battery power supply is less than the preset energy required by the return process, determining that the power supply parameters of the lithium battery power supply do not accord with the preset scheduled return process condition.
15. The method for controlling a marine power supply system according to claim 14, wherein whether the power supply parameters of the fuel cell power supply, the lithium battery power supply, and the light energy power supply meet a preset return-by-time condition is determined step by step according to a set sequence, further comprising:
under the condition that the power supply parameters of the lithium battery power supply do not accord with preset scheduled return conditions, judging whether the power of the light energy power supply is larger than or equal to the energy required by the preset return;
if the power of the optical energy power supply is greater than or equal to the energy required by the preset return process, determining that the power supply parameters of the optical energy power supply meet the preset scheduled return process condition; and if the power of the light energy power supply is less than the energy required by the preset return path, determining that the light energy power supply fails.
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