CN102120488A - Electric propulsion system for hybrid power boats and implementation method thereof - Google Patents
Electric propulsion system for hybrid power boats and implementation method thereof Download PDFInfo
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Abstract
The invention discloses an electric propulsion system for hybrid power boats and an implementation method thereof, wherein the electric propulsion system is suitable for inland river medium and small-sized river boats and comprises a power battery used as a system main power supply and a diesel generator set used as an auxiliary power supply. When a boat berths alongside and suspends shipping services, the power battery is charged by a shore power so as to store electric energy; when the boat sails normally, the electric propulsion system is powered by the power battery; when the stored electric energy of the power battery are completely consumed or the power battery goes wrong in the process of sailing, the auxiliary diesel generator set automatically starts and puts into operation so as to continue to supply power for the electric propulsion system to maintain the sailing of the boat; and in emergency, the power battery and the diesel generator set work together to supply power for the electric propulsion system so as to ensure the sailing safety of the boat. By using the system and the implementation method of the system disclosed by the invention, boats can realize zero discharge of waste gas/water, and remarkable effects of energy saving and expenditure cutting are generated; meanwhile, the hybrid power supply mode of the power battery and the diesel generator set ensures the sailing safety of a boat and improves the duration performance of the boat.
Description
Technical field
The present invention relates to the watercraft electric propulsion system technical field, particularly relate to a kind of watercraft electric propulsion system of hybrid power supply, the invention still further relates to the watercraft electric propulsion system implementation method of this hybrid power supply.
Background technology
Electric propulsion system is a kind of advanced person's a propulsion of ship mode.This propulsion mode can improve the technical and economic performance of boats and ships, and it is good to have a maneuvering performance, reduce boats and ships exhaust emission, reduce the characteristics of the energy-conservation environmental protection such as fuel energy consumption of boats and ships, can obtain dynamic characteristic preferably simultaneously.Chinese patent 201010300192.x discloses a kind of diesel engine-generator set (be called for short the bavin group of motors, below all adopt this abbreviation), switching arrangement, main motor and angle of rake electric propulsion system of comprising; Chinese patent 200810034693.0 discloses a kind of control setup and control method thereof of Electrical Propulsion Ship.In the above-mentioned patent, the active force power supply of its Electrical Propulsion Ship is conventional bavin group of motors.The long-term constant-speed operation of bavin group of motors can be avoided its high oil consumption and over-emitting black exhaust phenomenon when low speed or idling propelling operating mode under the High Load Rate state.But in itself, the electric propulsion system of this bavin group of motors power supply can only limited reduction but can not be eliminated the exhaust emission of boats and ships at all.
In order to realize the waste gas zero-emission of Electrical Propulsion Ship, development is the green ship of active force power supply with the clean energy resource.Chinese patent 200710036259.1 discloses a kind of watercraft electric propulsion system based on super capacitance hybrid power, and its electric power system comprises super capacitor group and the battery pile that links to each other with propulsion control system; Chinese patent 200820155772.2 discloses a kind of electric power system that is used for watercraft electric propulsion system, and its electric power system comprises super capacitor group and the battery pile that links to each other with propulsion control system.In the above-mentioned patent with storage battery and super capacitor as the active force power supply of watercraft electric propulsion system, cancelled conventional bavin group of motors, make boats and ships self can realize the zero-emission of waste gas.But, as the energy storage that needs charge of the super capacitor of boats and ships main power source and storage battery,, then can cause boats and ships to run out of steam in case the energy storage of super capacitor and storage battery is used up or self et out of order under sail through on the bank, cause serious navigation safety accident; Secondly, generally can not produce the braking kinetic energy of callable electric propulsion system in the normal navigation of boats and ships, so the meaning of super capacitor in system and little.
Summary of the invention
Technical matters to be solved by this invention is the defective that exists at above-mentioned prior art and a kind of inland river medium and small-scale vessel that is applicable to of proposing, with electrokinetic cell as the main power source of electric propulsion system, with the watercraft electric propulsion system of bavin group of motors as the hybrid power supply pattern of accessory feed.When ship berthing is suspended, electrokinetic cell is charged store electrical energy by the bank electricity; During normal the navigation, electric propulsion system is powered by electrokinetic cell; In case the energy storage of electrokinetic cell is used up or et out of order in the navigation, then auxiliary bavin group of motors starting automatically puts into operation, continues as the electric propulsion system power supply, keeps ship's navigation; Under emergency rating, it is the electric propulsion system power supply that electrokinetic cell and bavin group of motors are united, with the safety of navigation of assurance boats and ships.The present invention also provides the implementation method of this kind watercraft electric propulsion system.
Technical matters to be solved by this invention can realize by following technological means:
A kind of hybrid power boats and ships electric propulsion system, total system have comprised bank electricity connecting system and hybrid power source system, power supply switched system, the electric propulsion system that constitutes the secondary electrical network and other power load system that constitutes three electrical networks that constitutes an electrical network; Described hybrid power source system comprises interconnective electrokinetic cell main power source and bavin group of motors accessory feed, hybrid power source system is connected with bank electricity connecting system, and described electric propulsion system is connected with hybrid power source system by the power supply switched system with other power load system.
Described electrokinetic cell main power source comprises bonded assembly power battery pack, charge controller and charge switch successively, and described bavin group of motors accessory feed comprises bonded assembly bavin group of motors and combined floodgate/disjunction main switch; Described bank electricity connecting system comprises that bonded assembly bank electricity power-on box and bank electricity insert main switch, and described bank electricity inserts main switch and is connected with charge switch, and described charge switch is connected with combined floodgate/disjunction main switch, and finally connects the power supply switched system.
Described power supply switched system comprises bonded assembly bavin group of motors power conversion switch, supply convertor, bavin group of motors power supply main switch and bonded assembly supply convertor, electrokinetic cell power supply main switch successively, described bavin group of motors power conversion switch connects the charge switch and the combined floodgate/disjunction main switch of hybrid power source system, described supply convertor is connected with power battery pack, described bavin group of motors power supply main switch is connected with electrokinetic cell power supply main switch, and finally connects electric propulsion system and other power load system.
Described electric propulsion system comprises two groups or one group bonded assembly main motor and propelling unit, main motor speed setting controller and main motor on-load switch successively, and described two or a main motor on-load switch are connected with the power supply switched system.
A kind of implementation method of described hybrid power boats and ships electric propulsion system comprises the steps:
Bank electricity power supply when A. suspending: after ship berthing was suspended, the bank electrical connector that bank electricity connecting system connects was on the bank given the charging of electrokinetic cell main power source, after the electrokinetic cell main power source is full of electricity, stops charging;
The power supply power supply has three kinds of power supply modes when B. navigating by water, and the implementation method of these three kinds of power supply modes is:
A. electrokinetic cell power supply during ship's navigation, is only opened being connected of electrokinetic cell and power supply switched system, and the power supply switched system is connected with electric propulsion system or other power load system, is the electrokinetic cell powering mode at this moment;
B. bavin group of motors power supply during ship's navigation, is only opened being connected of bavin group of motors and power supply switched system, and the power supply switched system is connected with electric propulsion system or other power load system, is bavin group of motors powering mode at this moment;
C. electrokinetic cell and bavin group of motors are united power supply, during ship's navigation, open being connected of electrokinetic cell and bavin group of motors and power supply switched system simultaneously, and the power supply switched system is connected with electric propulsion system or other power load system, be electrokinetic cell and bavin group of motors associating powering mode this moment.
What the present invention proposed is main power source with the electrokinetic cell, and the hybrid power supply mode that is aided with the bavin group of motors advances boats and ships, can realize marine exhaust, wastewater zero discharge, produces simultaneously than considerable energy saving, joint Zhi Xiaoguo.And the hybrid power supply mode of electrokinetic cell and bavin group of motors guaranteed the safety of navigation of boats and ships again, improved the duration performance of boats and ships.
Description of drawings
Fig. 1 forms constructional drawing for system of the present invention.
Fig. 2 is bank electricity power supply state diagram of the present invention.
Fig. 3 is electrokinetic cell power supply state diagram of the present invention.
Fig. 4 is bavin group of motors power supply state diagram of the present invention.
Fig. 5 is electrokinetic cell of the present invention and bavin group of motors associating power supply state diagram.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
(1) the composition structure of the electric propulsion system of electrokinetic cell hybrid power supply
As shown in Figure 1, the watercraft electric propulsion system of electrokinetic cell hybrid power supply mainly is made up of an electrical network 111 of electric power system, the secondary electrical network 211 of electric propulsion load and three electrical networks 311 of other power load on circuit structure; Bank electricity connecting system 411, hybrid power source system 511, power supply switched system 611, electric propulsion system 711 and other power load system 811 have been comprised.According to the design of watercraft electric propulsion system and the specific requirement of configuration, electrical network 111 and secondary electrical network 211 can be that AC network also can be a direct current network, and three times electrical network 311 is generally AC network.
Bank electricity connecting system 411 inserts main switch 2 by bank electricity power-on box 1 and bank electricity and inserts bank.When charge switch 7 closes a floodgate, can be the power battery pack 5 charging energy storage under the ship berthing state.
Hybrid power source system 511 is formed the electrokinetic cell main power source by power battery pack 5, charge controller 6 and charge switch 7, and forms bavin group of motors accessory feed by bavin group of motors 4 and combined floodgate/disjunction main switch 3.During normal the navigation, be electric propulsion system 711 and 811 power supplies of other power load system by power battery pack 5.When the energy storage of power battery pack 5 uses up or during et out of order, can change by 4 power supplies of bavin group of motors, to guarantee the safety of navigation of boats and ships.
Power supply switched system 611 is by bavin group of motors power conversion switch 8, supply convertor 9, bavin group of motors power supply main switch 10, and supply convertor 11, electrokinetic cell power supply main switch 12 are formed.
Electric propulsion system 711 is made up of electric propulsion motor and propelling unit 17 and 18 thereof, the speed setting controller 13 and 15 of main motor, main motor on- load switch 14 and 16, and the propelling control when speed setting controller 13 and 15 can be according to navigation requires respectively main motor 17 and 18 to be implemented speed control.Above-mentioned this composition structure is the two propulsion system structures of port and starboard, and under single propulsion system situation, circuit structure can be reduced to triangular web.
Other power load system 811 has comprised the boats and ships power load except that the electric propulsion load.
(2) system running state
The watercraft electric propulsion system of electrokinetic cell hybrid power supply, its running state has four kinds: bank electricity power supply state when 1. suspending, electrokinetic cell power supply state when 2. navigating by water, bavin group of motors power supply state when 3. navigating by water, electrokinetic cell and bavin group of motors associating power supply state when 4. navigating by water.
Bank electricity power supply state when 1. suspending
After ship berthing is suspended, utilize harbour bank electricity, make boats and ships when setting sail, possess sufficient electric energy next time the power battery pack energy storage of charging.Bank electricity power supply state as shown in Figure 2.Bank electricity power-on box 1 connects bank electricity combination hub, and bank electricity main switch 2 closes a floodgate, and power battery charging switch 7 closes a floodgate, and by charge controller 6, is the 5 charging energy storage of the power battery pack under the ship berthing state.
Charge controller 6 detects the energy storage capacity of power battery pack in real time, when the energy storage capacity of battery pack 5 is lower than a defined threshold (as 50% rated capacity), carries out constant-current charge control; And when the energy storage capacity of battery pack 5 is higher than a defined threshold (as 85% rated capacity), carry out constant-voltage charge control.Charge controller 6 has the control indicator panel can be for operation.
Electrokinetic cell power supply state when 2. navigating by water
During ship's navigation, implement power supply by 5 pairs of secondary electrical networks of power battery pack 211.The electrokinetic cell power supply state as shown in Figure 3.Main switch 12 closes a floodgate and 10 disjunctions, is powered to secondary electrical network 211 by supply convertor 11 by power battery pack 5.The on-load switch 14 of electric propulsion system and 16 closes a floodgate, and according to electric propulsion control requirement, respectively main motor 17 and 18 is implemented speed control by speed setting controller 13 and 15.
Bavin group of motors power supply state when 3. navigating by water
During ship's navigation, when the accumulation of energy of power battery pack 5 is lower than a defined threshold (as 10% rated capacity), or when power battery pack 5 et out of orders can not be kept power supply, will send warning.Propulsion source will be switched in system this moment, replace power battery pack 5 automatically by bavin-group of motors 4.Bavin-the group of motors power supply state as shown in Figure 4.Main switch 12 disjunctions and 10 close a floodgate, by bavin-group of motors 4 by supply convertor 9 to 211 power supplies of secondary electrical network.The on-load switch 14 of electric propulsion system and 16 closes a floodgate, and according to electric propulsion control requirement, respectively main motor 17 and 18 is implemented speed control by speed setting controller 13 and 15.In addition, when secondary electrical network 211 guaranteed power supply, dump power was charged to power battery pack 5 by charge switch 7 and charge controller 6 in bavin-group of motors 4.
Electrokinetic cell and bavin group of motors associating power supply state when 4. navigating by water
During ship's navigation, power battery pack 5 and bavin group of motors 4 are united to 211 power supplies of secondary electrical network, to guarantee the reliability to the electric propulsion system power supply.Electrokinetic cell and bavin group of motors associating power supply state are as shown in Figure 5. Main switch 12 and 10 all closes a floodgate, and is powered to secondary electrical network 211 jointly by supply convertor 11 by supply convertor 9, power battery pack 5 by bavin-group of motors 4.The on-load switch 14 of electric propulsion system and 16 closes a floodgate, and according to electric propulsion control requirement, respectively main motor 17 and 18 is implemented speed control by speed setting controller 13 and 15.
(3) application implementation
By the watercraft electric propulsion system of electrokinetic cell hybrid power supply shown in Figure 1, its power battery pack 5 should be non-maintaining high-density lithium ion storage battery, also can be nickel-hydrogen accumulator, nickel-cadmium battery, or lead-acid storage battery etc.Bavin-group of motors 4 can be an alternating current generating sets, also can be the DC generation unit.The main motor 13 of electric propulsion system and 15 can be autosynchronous motor or AC asynchronous motor, also can be DC motor.Therefore, during application implementation, can carry out system configuration, following four kinds of embodiment are arranged according to specific requirement.
1. one: electrical network of embodiment is the electric propulsion system that exchanges with the secondary electrical network
When an electrical network 111 was designed to the AC network of same frequency, identical voltage with secondary electrical network 211, bavin-group of motors 4 was configured to alternating current generating sets.Can save supply convertor 9 and corresponding switch 8 this moment, and the power battery charging device 6 controlled AC/DC current transformer (rectifier) that should be outgoing current or output voltage.Supply convertor 11 should be the constant DC/AC changer (AC inverter) of output voltage and output frequency.The main motor 13 and 15 of electric propulsion system is configured to autosynchronous motor or AC asynchronous motor, and corresponding speed setting controller 13 and 15 should be the controlled AC/AC changer (AC converter) of output voltage and frequency.This is the application implementation that a kind of representative type alternating electromotive force advances boats and ships.
2. two: electrical networks of embodiment and secondary electrical network are the straight-though electric propulsion system
When an electrical network 111 was designed to the direct current network of identical voltage with secondary electrical network 211, bavin-group of motors 4 was configured to the DC generation unit.Can save supply convertor 9 and corresponding switch 8 this moment, and the power battery charging device 6 controlled DC/DC current transformer (DC transformer) that should be outgoing current or output voltage.And the supply convertor 11 constant DC/DC changer (DC transformer) that should be output voltage.The main motor 13 and 15 of electric propulsion system is configured to DC motor, and corresponding speed setting controller 13 and 15 should be the controlled DC/DC changer (dc voltage regulator) of output voltage.This is the application implementation that a kind of representative type direct current power advances boats and ships.
3. three: electrical networks of embodiment are the electric propulsion system of direct current secondary electrical network for exchanging
When electrical network 111 is designed to direct current network and secondary electrical network 211 when being designed to AC network, bavin-group of motors 4 is configured to the DC generation unit.This moment, supply convertor 9 and 11 should be the constant DC/AC changer of output voltage and frequency (AC inverter).And the power battery charging device 6 controlled DC/DC current transformer (DC transformer) that should be outgoing current or output voltage.The main motor 13 and 15 of electric propulsion system is configured to autosynchronous motor or AC asynchronous motor, and corresponding speed setting controller 13 and 15 should be output voltage and frequency controlled (AC converter).
4. four: electrical networks of embodiment are the straight-though electric propulsion system for exchanging the secondary electrical network
When electrical network 111 is designed to AC network and secondary electrical network 211 when being designed to direct current network, bavin-group of motors 4 is configured to alternating current generating sets.This moment, supply convertor 9 should be the constant AC/DC changer (rectifier) of output voltage.Supply convertor 11 should be the constant DC/DC changer (DC transformer) of output voltage.And the power battery charging device 6 controlled AC/DC current transformer (rectifier) that should be outgoing current or output voltage.The main motor 13 and 15 of electric propulsion system is configured to DC motor, and corresponding speed setting controller 13 and 15 should be the controlled DC/DC changer (dc voltage regulator) of output voltage.
More than show and described groundwork of the present invention, principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. hybrid power boats and ships electric propulsion system, it is characterized in that total system has comprised bank electricity connecting system and hybrid power source system, power supply switched system, the electric propulsion system that constitutes the secondary electrical network and other power load system that constitutes three electrical networks that constitutes an electrical network; Described hybrid power source system comprises interconnective electrokinetic cell main power source and bavin group of motors accessory feed, hybrid power source system is connected with bank electricity connecting system, and described electric propulsion system is connected with hybrid power source system by the power supply switched system with other power load system.
2. hybrid power boats and ships electric propulsion system according to claim 1, it is characterized in that, described electrokinetic cell main power source comprises bonded assembly power battery pack, charge controller and charge switch successively, and described bavin group of motors accessory feed comprises bonded assembly bavin group of motors and combined floodgate/disjunction main switch; Described bank electricity connecting system comprises that bonded assembly bank electricity power-on box and bank electricity insert main switch, and described bank electricity inserts main switch and is connected with charge switch, and described charge switch is connected with combined floodgate/disjunction main switch, and finally connects the power supply switched system.
3. as hybrid power boats and ships electric propulsion system as described in the claim 2, it is characterized in that, described power supply switched system comprises bonded assembly bavin group of motors power conversion switch successively, supply convertor, bavin group of motors power supply main switch and bonded assembly supply convertor, electrokinetic cell power supply main switch, described bavin group of motors power conversion switch connects the charge switch and the combined floodgate/disjunction main switch of hybrid power source system, described supply convertor is connected with power battery pack, described bavin group of motors power supply main switch is connected with electrokinetic cell power supply main switch, and finally connects electric propulsion system and other power load system.
4. as hybrid power boats and ships electric propulsion system as described in claim 1 or 2 or 3, it is characterized in that, described electric propulsion system comprises two groups or one group bonded assembly main motor and propelling unit, main motor speed setting controller and main motor on-load switch successively, and described two or a main motor on-load switch are connected with the power supply switched system.
5. the implementation method of hybrid power boats and ships electric propulsion system according to claim 1 is characterized in that, comprises the steps:
Bank electricity power supply when A. suspending: after ship berthing was suspended, the bank electrical connector that bank electricity connecting system connects was on the bank given the charging of electrokinetic cell main power source, after the electrokinetic cell main power source is full of electricity, stops charging;
The power supply power supply has three kinds of power supply modes when B. navigating by water, and the implementation method of these three kinds of power supply modes is:
A. electrokinetic cell power supply during ship's navigation, is only opened being connected of electrokinetic cell and power supply switched system, and the power supply switched system is connected with electric propulsion system or other power load system, is the electrokinetic cell powering mode at this moment;
B. bavin group of motors power supply during ship's navigation, is only opened being connected of bavin group of motors and power supply switched system, and the power supply switched system is connected with electric propulsion system or other power load system, is bavin group of motors powering mode at this moment;
C. electrokinetic cell and bavin group of motors are united power supply, during ship's navigation, open being connected of electrokinetic cell and bavin group of motors and power supply switched system simultaneously, and the power supply switched system is connected with electric propulsion system or other power load system, be electrokinetic cell and bavin group of motors associating powering mode this moment.
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| CN110104157A (en) * | 2019-05-20 | 2019-08-09 | 广西师范大学 | A kind of lithium ion battery for new energy ship-magnesium air cell hybrid power system |
| CN114336621A (en) * | 2022-02-18 | 2022-04-12 | 中船动力研究院有限公司 | Gas-electric hybrid power ship energy management system and method |
| CN115214865A (en) * | 2022-07-29 | 2022-10-21 | 中国船舶重工集团公司第七0四研究所 | Ship hybrid power system and energy management method thereof |
| CN115214865B (en) * | 2022-07-29 | 2024-03-01 | 中国船舶重工集团公司第七0四研究所 | Ship hybrid power system and energy management method thereof |
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Application publication date: 20110713 |