CN113783279B - Storage battery-based ship power supply method and storage battery-based ship power supply device - Google Patents
Storage battery-based ship power supply method and storage battery-based ship power supply device Download PDFInfo
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- CN113783279B CN113783279B CN202111344278.7A CN202111344278A CN113783279B CN 113783279 B CN113783279 B CN 113783279B CN 202111344278 A CN202111344278 A CN 202111344278A CN 113783279 B CN113783279 B CN 113783279B
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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
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- 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
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- 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
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- 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
- B60L8/006—Converting flow of air into electric energy, e.g. by using wind turbines
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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
- H02J7/0047—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]
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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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
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- 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
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- 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
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- 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
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- 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
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Wind Motors (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model provides a ship power supply method based on a storage battery and a ship power supply device based on the storage battery, relating to the technical field of ships. The method comprises the following steps: when a motor for propelling the ship to run is in a non-starting state, the storage battery is charged through the wind-solar hybrid power generation system, and electrical equipment of the ship is electrified through the wind-solar hybrid power generation system, wherein the electrical equipment is other electrical equipment except the motor in the ship; when the motor is in a starting state, the wind-solar hybrid power generation system and the storage battery are used for supplying power to the motor, and the wind-solar hybrid power generation system is used for supplying power to the electrical equipment. According to the technical scheme, wind energy and solar energy resources can be fully utilized, the storage battery is arranged to store power when the ship power load is small, the stored power is provided when the ship power load is large, the renewable resources are reasonably configured by matching the starting and stopping states of the ship motor, and finally green operation of the ship can be guaranteed.
Description
Technical Field
The disclosure relates to the technical field of ships, in particular to a storage battery-based ship power supply method and a storage battery-based ship power supply device.
Background
Although the development of human society is greatly promoted by energy sources such as coal, petroleum, natural gas and the like, new energy sources increasingly participate in production and life in the face of exhaustion of non-renewable resources and pollution of combustion of the non-renewable resources to the environment.
Therefore, the technical scheme provides a scheme for providing power required by the ship in the driving process based on new energy.
Disclosure of Invention
The invention aims to provide a storage battery-based ship power supply method and a storage battery-based ship power supply device, and particularly provides a scheme for operating a marine ship based on clean energy.
Additional features and advantages of the disclosed embodiments will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosed embodiments.
According to an aspect of the disclosed embodiments, there is provided a method for supplying power to a ship based on a storage battery, the method including: when a motor for propelling a ship to run is in a non-starting state, charging a storage battery through a wind-solar hybrid power generation system, and electrifying electrical equipment of the ship through the wind-solar hybrid power generation system, wherein the electrical equipment is other electrical equipment except the motor; when the motor is in a starting state, the wind-solar hybrid power generation system and the storage battery are used for supplying power to the motor, and the wind-solar hybrid power generation system is used for supplying power to the electrical equipment; wherein the electric power supplied from the battery reaches the motor after passing through the inverter;
the wind-solar hybrid power generation system and the storage battery provide power for the motor, and the wind-solar hybrid power generation system comprises: determining a first ratio with respect to a first electric quantity and a second electric quantity according to a state of the battery; according to the first proportion, the electric quantity provided by the wind-solar hybrid generation system for the motor per unit time is determined to be the first electric quantity, and the electric quantity provided by the storage battery for the motor per unit time is determined to be the second electric quantity.
In an exemplary embodiment, according to the aspect of the above aspect, the method further includes: and under the condition that the motor of the ship is in a starting state, the electric quantity of the storage battery is smaller than a first preset value, and the electric quantity of the wind-solar hybrid power generation system is larger than a second preset value, the storage battery is charged through the wind-solar hybrid power generation system.
In an exemplary embodiment, according to an aspect of the above aspect, the state of the battery includes: the charging and discharging control system comprises a first state that the storage capacity is greater than a third preset value, a second state that the storage capacity is smaller than the third preset value and the charging and discharging are carried out simultaneously, and a third state that the storage capacity is smaller than the third preset value and the charging and discharging are not carried out;
determining a first ratio based on the state of the battery includes: determining that the second amount of power is greater than the first amount of power when the battery is in the first state; and determining that the first electric quantity is greater than the second electric quantity when the storage battery is in the second state or the third state.
In an exemplary embodiment, according to the aspect of the above aspect, the method further includes: in the case of the motor braking, energy generated by the braking is converted into electric energy and stored in the battery.
In an exemplary embodiment, according to the aspect of the above aspect, the wind-solar hybrid power generation system includes: wind power generators and photovoltaic panels.
The wind energy generator is arranged on the ship and used for converting received wind energy into electric energy; and the photovoltaic power generation panel is arranged on the ship and used for converting the received solar energy into electric energy.
In an exemplary embodiment, according to the aspect of the above aspect, the battery is one or a combination of lithium iron phosphate battery, lithium rare earth battery, and lithium titanate battery.
According to another aspect of the disclosed embodiments, there is provided a battery-based marine power supply apparatus, the apparatus including: a storage battery for supplying electric power to an electric motor for propelling a ship to travel when the electric motor is in a start state; wherein the electric power supplied from the battery reaches the motor after passing through the inverter; the wind-solar hybrid power generation system is used for charging the storage battery and providing power for electrical equipment of the ship when the motor is in a non-starting state; the motor is also used for providing power for the motor and the electrical equipment when the motor is in a starting state; the electric equipment is other electric equipment except the motor; and a power supply control module connected to the wind/solar hybrid power generation system and the storage battery, respectively, wherein the power supply control module is configured to: determining a first ratio with respect to a first electric quantity and a second electric quantity according to a state of the battery; and is also used for: according to the first proportion, the electric quantity provided by the wind-solar hybrid generation system for the motor per unit time is determined to be the first electric quantity, and the electric quantity provided by the storage battery for the motor per unit time is determined to be the second electric quantity.
In an exemplary embodiment, according to the above aspect, the apparatus further includes: the charging control module is connected with the wind-solar hybrid power generation system;
wherein, the charging control module is used for: when the motor is in a non-starting state, controlling the wind-solar hybrid power generation system to charge the storage battery; the charging control module is further configured to: and under the condition that the motor of the ship is in a starting state, the electric quantity of the storage battery is smaller than a first preset value, and the electric quantity of the wind-solar hybrid power generation system is larger than a second preset value, controlling the wind-solar hybrid power generation system to charge the storage battery.
In an exemplary embodiment, according to another aspect of the above aspect, the state of the battery includes: the charging and discharging control system comprises a first state that the storage capacity is greater than a third preset value, a second state that the storage capacity is smaller than the third preset value and the charging and discharging are carried out simultaneously, and a third state that the storage capacity is smaller than the third preset value and the charging and discharging are not carried out;
wherein, the power supply control module is specifically configured to: determining that the second amount of power is greater than the first amount of power when the battery is in the first state; and determining that the first electric quantity is greater than the second electric quantity when the storage battery is in the second state or the third state.
In an exemplary embodiment, according to the above aspect of the present invention, the wind-solar hybrid power generation system includes: wind power generators and photovoltaic panels.
The wind energy generator is arranged on the ship and used for converting received wind energy into electric energy; and the photovoltaic power generation panel is arranged on the ship and used for converting the received solar energy into electric energy.
In an exemplary embodiment, according to another aspect of the above, the battery is one or more of a lithium iron phosphate battery, a lithium rare earth battery, and a lithium titanate battery.
The ship power supply method and the ship power supply device based on the storage battery provided by the embodiment of the disclosure have the following technical effects:
according to the technical scheme, the wind and electricity complementary power generation system can fully utilize wind energy and solar energy which can be received by a ship. For example, a ship can receive more wind energy in the running process, and the wind energy is less influenced by rainy weather and is larger in wind energy available in storm weather; and when the weather is fine, under the condition that the wind energy is smaller, more solar energy can be used. Further, when the motor for propelling the ship to run is in a non-starting state (for example, anchoring, landing), the electric load of the ship is small, and the storage battery can be charged through the wind-solar hybrid power generation system. Meanwhile, electrical equipment (lighting equipment, air conditioning equipment and the like) in the ship except for the motor can also obtain the electric quantity from the wind power complementary power generation system. And in the process of ship advancing, the power consumption of the motor is large, so that the ship power load is large, and the wind-solar hybrid power generation system and the charged storage battery supply power to the motor.
The wind-solar complementary power supply system based on the storage battery can fully utilize clean energy such as wind energy, solar energy and the like, is particularly suitable for a ship power supply system sailing on the sea,
therefore, the wind-solar hybrid power generation system can fully utilize wind energy and solar energy resources, in addition, the storage battery is arranged to store power when the ship power load is small, and the stored power is provided when the ship power load is large, so that renewable resources are reasonably configured by matching with the starting and stopping state of the ship motor, and finally green operation of the ship can be guaranteed. Specifically, according to the scheme, under the condition that the wind-solar hybrid power generation system and the storage battery are jointly used for supplying power, the power supply proportion of the wind-solar hybrid power generation system and the storage battery is controlled according to the state of the storage battery, so that reasonable distribution of power supply amount is facilitated, and the service life of the storage battery is prolonged.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the embodiments of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 shows a schematic diagram of a storage battery based marine vessel power supply apparatus for supplying power in an exemplary embodiment of the present disclosure.
Fig. 2 shows a schematic flow diagram of a method for battery-based marine vessel power supply in an exemplary embodiment of the present disclosure.
Fig. 3 shows a schematic current flow diagram of a ship with a motor in a non-activated state according to an exemplary embodiment of the disclosure.
Fig. 4 shows a schematic current flow diagram of a ship with a motor in a start-up state according to an exemplary embodiment of the disclosure.
Fig. 5 shows a schematic diagram of a power supply method in a starting state of a motor of a ship in an exemplary embodiment of the disclosure.
Fig. 6 shows a schematic current flow diagram of a ship with a motor in a braking state according to an exemplary embodiment of the disclosure.
Description of the drawings:
110. a wind-solar hybrid power generation system; 120. a storage battery;
130. an electric motor; 140. An electrical device;
150. a charging control module; 160. And a power supply control module.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosed embodiments, as detailed in the appended claims.
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the embodiments of the present disclosure.
Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The storage battery-based ship power supply device provided by the embodiment of the present disclosure can fully utilize clean energy such as wind energy and solar energy, and is particularly suitable for a ship power supply system sailing on the sea, and the storage battery-based ship power supply device is explained in detail below:
the power supply device provided by the embodiment of the specification is suitable for a traffic ship or a traffic boat, a ferry or a ferry, a cruise ship or a yacht, a transport ship or a transport boat, a passenger ship or a passenger ship and the like which sail at the sea. Specifically, the ship includes: the ship body and the storage battery-based ship power supply device provided by the embodiment of the specification. The storage battery-based ship power supply device provided by the embodiment of the specification can provide power for running a ship based on clean energy. To a certain extent, the use of petroleum resources can be reduced, thereby reducing carbon emission and environmental pollution.
In an exemplary embodiment, fig. 1 shows a schematic diagram of a storage battery-based ship power supply device for supplying power in an exemplary embodiment of the present disclosure.
Referring to fig. 1, the battery-based marine power supply apparatus includes: the wind-solar hybrid power generation system 110, the storage battery 120 and the power supply control module 160 connected with the wind-solar hybrid power generation system 110 and the storage battery 120 respectively.
The wind power complementary power generation system 110 arranged on the ship specifically comprises: the wind energy generator is arranged on the ship and used for converting the received wind energy into electric energy; and the photovoltaic power generation panel is arranged on the ship and used for converting the received solar energy into electric energy.
The wind-solar hybrid power generation system 110 can fully utilize wind energy and solar energy received by a ship in a water area (such as the sea). For example, a ship can receive more wind energy in the running process, and the wind energy is less influenced by rainy weather and is larger in wind energy available in storm weather; and when the weather is fine, under the condition that the wind energy is smaller, more solar energy can be used. Therefore, the wind power complementary power generation system 110 can generate a large amount of power. It can be seen that the embodiments of the present disclosure fully utilize inexhaustible renewable natural resources, such as wind energy and light energy, as a power source for maintaining the operation of the ship, so as to have positive protection for the environment, effective energy saving, and very important beneficial effects on human health.
More importantly, on the basis of utilizing renewable resources, the power supply device provided by the embodiment of the specification effectively regulates the use of electric quantity by arranging the storage battery. Specifically, the method comprises the following steps:
the situation that the electric energy currently generated by the wind power complementary power generation system 110 may be larger than the electric quantity currently required by the ship may occur, and the situation that the electric energy generated by the wind power complementary power generation system 110 may not meet the electric quantity currently required by the ship may also occur. In order to solve the above problem, the ship power supply device provided in the present technical solution is further provided with a storage battery 120.
In an exemplary embodiment, the battery is a lithium battery for stably supplying power to the motor in the ship. The lithium battery has high energy ratio, high storage energy density, long service life and high power bearing capacity, and can achieve the charge and discharge capacity of 15-30C, so that the high-strength starting acceleration is facilitated; the environment-friendly paint is green and environment-friendly, and does not contain or generate any toxic and harmful heavy metal elements and substances such as lead, mercury, cadmium and the like no matter production, use or scrapping. Specifically, the battery 120 may be any one of or a combination of any number of lithium iron phosphate batteries, lithium rare earth batteries, and lithium titanate batteries, according to actual needs.
Specifically, the following description is made in conjunction with an embodiment of the battery-based ship charging method shown in fig. 2, with reference to fig. 2:
and S210, charging the storage battery through the wind-solar hybrid power generation system when the motor for propelling the ship to run is in a non-starting state, and electrifying the electric equipment of the ship through the wind-solar hybrid power generation system, wherein the electric equipment is other electric equipment except the motor in the ship.
For example, referring to fig. 3, when the motor 130 for propelling the ship is in a non-activated state (e.g., anchored, berthed), the ship is less loaded with electric power, and the battery 120 may be charged by the wind-solar hybrid generation system 110. Meanwhile, electrical equipment 140 (lighting equipment, air conditioning equipment, etc.) in the ship other than the motor 130 may also obtain electric power from the wind power complementary power generation system 110. Thereby storing the surplus power in the storage battery 120.
S220, when the motor is in a starting state, the wind-solar hybrid power generation system and the storage battery are used for providing power for the motor, and the wind-solar hybrid power generation system is used for providing power for electrical equipment; wherein the electric power supplied from the battery reaches the motor after passing through the inverter.
For example, referring to fig. 4, during the ship traveling, the power load of the ship is large due to the large power consumption of the motor 130, and the wind-solar hybrid generation system 110 and the charged storage battery 120 are combined to supply power to the motor 130. Thereby effectively ensuring the normal navigation of the ship. In a specific implementation, the dc power output from the battery is converted into ac power by an inverter and then provided to the motor 130.
Therefore, the wind-solar hybrid power generation system in the scheme can fully utilize wind energy and solar energy resources, stores power when the ship power load is small by arranging the storage battery, and provides the stored power when the ship power load is large, so that renewable resources are reasonably configured by matching with the starting and stopping state of the ship motor, and finally green operation of the ship can be guaranteed.
In an exemplary embodiment, as described above, when the electric motor of the ship is in the non-start (stop) state, the electric load of the ship is small, and the battery 120 may not participate in power supply in the case where the wind-solar hybrid power generation system 110 can meet the demand of the electrical equipment 140. If the wind-solar hybrid power generation system 110 can meet the demand of the electrical equipment 140 and the surplus power generation amount is available, the wind-solar hybrid power generation system 110 charges the storage battery 120.
Note that, in S210: in the case that the wind and solar hybrid power generation system 110 is used for charging the storage battery 120 and supplying power to the electrical equipment 140, it is necessary to ensure the power consumption of the electrical equipment 140 of the ship, and then store the surplus power of the wind and solar hybrid power generation system 110 in the storage battery 120. For example, in a situation that the power generation amount of the wind-solar hybrid power generation system 110 cannot meet the power amount required by the electrical equipment 140, the storage battery 120 may be combined to supply power to the electrical equipment 140, so as to ensure the normal operation of the ship.
In order to improve the power supply flexibility, the storage battery 120 may be in a "charging and discharging" operating state. Specifically, the method comprises the following steps:
referring to fig. 1 and 3, the battery-based marine vessel power supply apparatus further includes: and the charging control module 150 is connected with the wind-solar hybrid power generation system 110.
The charging control module 150 is configured to: and controlling the wind-solar hybrid generation system 110 to charge the storage battery 120 when the motor 130 is in a non-starting state (i.e. a state that the storage battery 120 does not need to be discharged). In addition, the charging control module 150 is further configured to: when the electric motor of the ship is in a starting state (i.e. the state that the storage battery 120 and the wind-solar hybrid generation system 110 are required to provide electric power simultaneously), the electric quantity of the storage battery 120 is smaller than a first preset value (i.e. the electric quantity stored currently is less) and the electric quantity of the wind-solar hybrid generation system 110 is larger than a second preset value (the electric quantity of the wind-solar hybrid generation system 110 is sufficient), the wind-solar hybrid generation system 110 is controlled to charge the storage battery 120.
In this embodiment, the control battery can be in the operating condition of "fill while putting" to effectively promoted the utilization ratio of battery, simultaneously, still promoted the power supply flexibility ratio.
In an exemplary embodiment, in the operating state that the storage battery 120 is in the charging and discharging state, the control is mainly to supply power to the wind and light complementary power generation system 110, and the storage battery 120 is used for supplying power to the secondary, that is, the power supply amount of the wind and light complementary power generation system 110 is larger than the power supply amount of the storage battery 120 in unit time. Therefore, the electric quantity in the storage battery is prevented from being exhausted, the power supply rationality is favorably ensured, and the service life of the storage battery is favorably prolonged.
In an exemplary embodiment, in the case where the hybrid wind/solar energy generation system and the storage battery are combined to supply power to the motor (in S220), the ratio of the hybrid wind/solar energy generation system 110 and the storage battery 120 to supply power to the motor 130 may be controlled so as to reasonably allocate the amount of power supply. Specifically, the method comprises the following steps:
referring to fig. 5, the power supply control module 160, which is respectively connected to the wind-solar hybrid generation system 110 and the battery 120, is configured to perform:
and S510, determining a first proportion according to the state of the storage battery, wherein the first proportion is a ratio of the first electric quantity to the second electric quantity. And S520, according to the first proportion, determining the electric quantity provided by the wind-solar hybrid generation system for the motor per unit time to be a first electric quantity, and determining the electric quantity provided by the storage battery for the motor per unit time to be a second electric quantity.
In an exemplary embodiment, the state of the battery 120 may be classified into: the charging system comprises a first state in which the charge capacity is greater than a third preset value and the charging system is not charged (namely, a state in which the charge capacity is greater), a second state in which the charge capacity is less than the third preset value and the charging system is in a charging and discharging state, and a third state in which the charge capacity is less than the third preset value and the charging system is not charged.
One specific embodiment of "determining the first ratio according to the state of the battery" is as follows:
for example, when the storage battery 120 is in the first state, and the current storage amount of the storage battery is large, the power supply control module 160 may control the storage battery 120 to supply a large amount of electric power, and thus determine that the second electric power is larger than the first electric power. For example, when the storage battery 120 is in the second state or the third state, which indicates that the current storage capacity of the storage battery 120 is small, whether the storage battery is in the "charging and discharging while charging" state or not, it is necessary to control the wind power complementary power generation system 110 to provide more electric power through the power supply control module 160, so as to determine that the first electric power is greater than the second electric power.
According to the embodiment, under the condition that the wind-solar hybrid power generation system and the storage battery are used for supplying power jointly, the power supply proportion of the wind-solar hybrid power generation system and the storage battery is controlled according to the state of the storage battery, so that reasonable distribution of power supply amount is facilitated, and meanwhile the service life of the storage battery is prolonged.
In an exemplary embodiment, a backup battery may be further provided to replace the storage battery by the backup battery in case of a failure of the storage battery, so as to effectively ensure normal operation of the ship. The backup battery may also be any one or a combination of any more of lithium batteries, such as lithium iron phosphate batteries, rare earth lithium batteries, and lithium titanate batteries.
In an exemplary embodiment, referring to fig. 6, when the motor 130 for propelling the ship is in a braking state, energy generated by braking is converted into electric energy to be stored in the storage battery 120, and further, the electric energy stored in the storage battery 120 can be provided to the motor 130 in a starting state or an electric device 140 of the ship. Thereby fully utilizing energy and reducing energy waste.
Besides the charging device based on the storage battery, the ship is also provided with a generator of petroleum resources, so as to provide power for the normal operation of the ship under the condition that the storage battery and the wind-solar hybrid power generation system cannot provide sufficient power. Thereby effectively ensuring the normal operation of the ship.
It is to be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the method according to an exemplary embodiment of the invention, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
Claims (8)
1. A method for battery-based marine power supply, the method comprising:
when a motor for propelling a ship to run is in a non-starting state, charging a storage battery through a wind-solar hybrid power generation system, and electrifying electrical equipment of the ship through the wind-solar hybrid power generation system, wherein the electrical equipment is other electrical equipment except the motor in the ship;
when the motor is in a starting state, the wind-solar hybrid power generation system and the storage battery are used for supplying power to the motor, and the wind-solar hybrid power generation system is used for supplying power to the electrical equipment; wherein the electric power supplied from the battery reaches the motor after passing through the inverter;
the wind-solar hybrid power generation system and the storage battery are used for supplying power to the motor, and the wind-solar hybrid power generation system comprises:
determining a first ratio, which is a ratio with respect to a first electric quantity and a second electric quantity, according to a state of the battery; according to the first proportion, determining the electric quantity provided by the wind-solar hybrid power generation system for the motor per unit time as the first electric quantity, and determining the electric quantity provided by the storage battery for the motor per unit time as the second electric quantity;
wherein the state of the battery includes: the charging and discharging control system comprises a first state that the storage capacity is larger than a third preset value, a second state that the storage capacity is smaller than the third preset value and the charging and discharging are carried out simultaneously, and a third state that the storage capacity is smaller than the third preset value and the storage capacity is not charged; the determining a first ratio according to the state of the battery includes:
determining that the second amount of power is greater than the first amount of power when the battery is in the first state; determining that the first amount of power is greater than the second amount of power when the battery is in the second state or the third state.
2. The battery-based marine power supply method of claim 1, further comprising:
and under the condition that the motor of the ship is in a starting state, the electric quantity of the storage battery is smaller than a first preset value, and the power generation quantity of the wind-solar hybrid power generation system is larger than a second preset value, the storage battery is charged through the wind-solar hybrid power generation system.
3. The battery-based marine power supply method of claim 1, further comprising:
and in the case of braking of the motor, converting energy generated by braking into electric energy and storing the electric energy into the storage battery.
4. A battery-based marine vessel power supply method according to any one of claims 1 to 3, wherein the wind-solar hybrid power generation system comprises:
the wind energy generator is arranged on the ship and used for converting the received wind energy into electric energy;
and the photovoltaic power generation board is arranged on the ship and used for converting the received solar energy into electric energy.
5. A battery-based marine power supply method according to any of claims 1-3, wherein the battery is a combination of one or more of a lithium iron phosphate battery, a lithium rare earth battery, and a lithium titanate battery.
6. A battery-based marine power supply, said apparatus comprising:
the storage battery is used for providing power for the motor used for propelling the ship to run when the motor is in a starting state; wherein the electric power supplied from the battery reaches the motor after passing through the inverter;
the wind-solar hybrid power generation system is used for charging the storage battery and providing power for electrical equipment of the ship when the motor is in a non-starting state; the motor is also used for providing power for the motor and the electrical equipment when the motor is in a starting state; the electrical equipment is other electrical equipment except the motor; and the number of the first and second groups,
and the power supply control module is respectively connected with the wind-solar hybrid power generation system and the storage battery and is used for: determining a first ratio, which is a ratio with respect to a first electric quantity and a second electric quantity, according to a state of the battery; and is also used for: according to the first proportion, determining the electric quantity provided by the wind-solar hybrid power generation system for the motor per unit time as the first electric quantity, and determining the electric quantity provided by the storage battery for the motor per unit time as the second electric quantity;
wherein the state of the battery includes: the charging and discharging control system comprises a first state that the storage capacity is larger than a third preset value, a second state that the storage capacity is smaller than the third preset value and the charging and discharging are carried out simultaneously, and a third state that the storage capacity is smaller than the third preset value and the storage capacity is not charged; the power supply control module is specifically configured to: determining that the second amount of power is greater than the first amount of power when the battery is in the first state; determining that the first amount of power is greater than the second amount of power when the battery is in the second state or the third state.
7. The battery-based marine power supply of claim 6, further comprising: the charging control module is connected with the wind-solar hybrid power generation system;
the charging control module is configured to: when the motor is in a non-starting state, controlling the wind-solar hybrid power generation system to charge the storage battery;
and is also used for: and under the condition that the motor of the ship is in a starting state, the electric quantity of the storage battery is smaller than a first preset value, and the power generation quantity of the wind-solar hybrid power generation system is larger than a second preset value, controlling the wind-solar hybrid power generation system to charge the storage battery.
8. A battery-based marine power supply according to claim 6 or 7, wherein the battery is a combination of one or more of a lithium iron phosphate battery, a lithium rare earth battery, and a lithium titanate battery.
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