CN113998090A - Power configuration system of battery power ship and ship - Google Patents
Power configuration system of battery power ship and ship Download PDFInfo
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- CN113998090A CN113998090A CN202111475838.2A CN202111475838A CN113998090A CN 113998090 A CN113998090 A CN 113998090A CN 202111475838 A CN202111475838 A CN 202111475838A CN 113998090 A CN113998090 A CN 113998090A
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- 238000009826 distribution Methods 0.000 claims abstract description 27
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims description 16
- 238000007726 management method Methods 0.000 abstract description 13
- 230000009466 transformation Effects 0.000 abstract description 7
- 239000002283 diesel fuel Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 108010066057 cabin-1 Proteins 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 108010066278 cabin-4 Proteins 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power configuration system of a battery-powered ship and the ship, wherein the system comprises a lithium battery pack, a direct-current bus variable-frequency electric control device and a propulsion motor which are electrically connected in sequence, the propulsion motor is driven by the direct-current bus variable-frequency electric control device, the direct-current bus variable-frequency electric control device comprises a distribution board, the distribution board is arranged in a cabin of the ship and is used for realizing the distribution, conversion and management of the electric energy of the whole ship, the distribution board comprises a propulsion inverter and an auxiliary inverter, and the propulsion inverter and the auxiliary inverter are arranged in parallel and are electrically connected with the lithium battery pack. The electric transformation of the diesel engine power ship uses the lithium battery pack as a new energy source, and the running cost is further reduced while zero emission and low noise are met.
Description
Technical Field
The invention relates to the technology of ship power systems, in particular to a power configuration system of a battery-powered ship and the ship.
Background
The ship is used as a water transportation or operation vehicle, and has different technical performances, equipment and structural forms according to different use requirements. The power supply sources of the existing ships mainly comprise steam engines, diesel generators, gas engines, nuclear power devices and the like. In recent years, with the progress of technology and the higher requirements on ship power systems, diesel electric propulsion has been widely recognized as a power mode for special ships. With the great control of ship pollutant emission in China and the improvement and price reduction of battery technology, a battery electric propulsion system is widely mentioned as a clean power system, meets zero emission and low noise, can further reduce the operation cost, and is the power first choice of small and medium-sized inland river ships in the future. The electric modification of the conventional diesel engine power ship plays an active role in protecting water sources.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a power configuration system of a battery-powered ship and the ship, and the power configuration system further reduces the operation cost while meeting zero emission and low noise through electric transformation of a conventional diesel engine-powered ship.
In a first aspect, the invention provides a power configuration system of a battery-powered ship, which comprises a lithium battery pack, a direct-current bus variable-frequency electric control device and a propulsion motor, wherein the lithium battery pack, the direct-current bus variable-frequency electric control device and the propulsion motor are electrically connected in sequence, the propulsion motor is driven by the direct-current bus variable-frequency electric control device, the direct-current bus variable-frequency electric control device comprises a distribution board, the distribution board is installed in a cabin of the ship, the distribution board realizes whole-ship electric energy distribution, conversion and management, the distribution board comprises a propulsion inverter and an auxiliary inverter, and the propulsion inverter and the auxiliary inverter are arranged in parallel and are electrically connected with the lithium battery pack.
Further, still include the bank electricity case, external power supply source is connected to the bank electricity case for the distribution of second grade load, the second grade load includes: work, air conditioning, lighting, and the like.
Furthermore, the propulsion inverter is electrically connected with the propulsion motor, and the propulsion inverter performs VVVF inversion on the direct current of the battery and is used for stepless frequency conversion and speed regulation of the propulsion motor.
Further, the inverter further comprises an isolation transformer, wherein the isolation transformer is electrically connected with the auxiliary inverter, and the isolation transformer is used for isolating and converting the voltage of the auxiliary inverter.
The power supply system further comprises a secondary transformer, wherein the secondary transformer is electrically connected with the isolation transformer, and the secondary transformer is used for supplying power to a secondary load.
Further, still include BMS battery management system, BMS battery management system with battery group electric connection, BMS battery management system comprises master control module (BCU), from accuse module (BMU), temperature control module (BTU), display module (BDU) carry out high-speed communication through CAN interface with from accuse module (BMU), temperature control module (BTU).
Furthermore, the lithium battery packs are provided with two groups, and the two groups of lithium battery packs are electrically connected in parallel through the direct current busbar.
In a second aspect, the invention provides a vessel comprising the power distribution system of the battery powered vessel of any one of the above embodiments.
The invention has the beneficial effects that: the electric transformation of the diesel engine power ship uses the lithium battery pack as a new energy source, and the running cost is further reduced while zero emission and low noise are met. The large-scale application of the battery powered ship is beneficial to promoting the green and clean process of water transportation, leads the rapid development of electric ship production in China, and promotes the accelerated fusion of an energy network and a traffic network.
Drawings
FIG. 1 is a view of a nacelle layout prior to reconstruction;
FIG. 2 is a diagram of a modified nacelle layout in accordance with a preferred embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power distribution system of a ship according to a preferred embodiment of the invention.
In the figure: 1. a nacelle; 2. a diesel engine; 3. a propeller; 4. a fuel compartment; 5. a lithium battery pack; 6. a distribution board; 61. a propulsion inverter; 62. an auxiliary inverter; 7. a propulsion motor; 8. an isolation transformer; 9. a secondary transformer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to the attached drawing 1, the total length of the ship is 33.52m, the profile width is 5.2m, the structure draft is 1.2m, a diesel engine 2 is adopted in a power mode to drive a propeller 3 through a reduction gear box and a stern shaft, a fuel oil cabin 4 is arranged in the cabin 1, the available space in the cabin 1 is about 6.5m multiplied by 5.2m multiplied by 2.1m, and an oil-to-electricity transformation space is provided.
Referring to fig. 2 and 3, the power configuration system of the present embodiment includes: the emergency charging and discharging system comprises a lithium battery pack 5, a direct-current bus variable-frequency electric control device, a 24VDC emergency charging and discharging plate, an isolation transformer 8, a secondary transformer 9, a propulsion motor 7, a gear box and a propeller.
In the embodiment, in order to ensure that the sailing speed of the modified pure electric patrol boat can reach 15km/h, a 52kW pushing motor 7 is selected to replace the original diesel engine 2. The total power of a propulsion motor 7 of the improved pure electric patrol boat is 104kW, the daily load power is 5kW, and the endurance time is 4 hours. Considering 80% of discharge depth of the lithium battery, the battery capacity is (104+5) × 4/0.8 is 545kWh, and 2 groups of 276.5kWh of lithium battery pack 5 are selected according to the configuration of a battery manufacturer. Two groups of 276.5kWh lithium battery packs 5 drive a propulsion motor 7 through a direct-current bus variable-frequency electric control device.
The direct current bus variable frequency electric control equipment comprises a distribution board 6, an auxiliary distribution board and a shore power box. The distribution board 6 realizes the distribution, transformation and management of the electric energy of the whole ship. The distribution board 6 is installed in the cabin and includes two propulsion inverters 61 and two auxiliary inverters 62, and the two propulsion inverters 61 and the two auxiliary inverters 62 are connected in parallel and electrically connected to the lithium battery pack 5. The propulsion inverter 61 carries out voltage-transformation frequency-conversion VVVF inversion on the direct current of the battery and is used for stepless frequency-conversion speed regulation of the three-phase asynchronous propulsion motor 7; the auxiliary inverter 62 performs CVCF inversion on the battery direct current and supplies power to auxiliary loads and daily loads of the whole ship in cooperation with a transformer.
The isolation transformer 8 is electrically connected with the auxiliary inverter 62, the transformation ratio is 340V/400V, the capacity is 10.2kVA, the isolation transformer is used for isolating and voltage transformation of the auxiliary inverter 62, the secondary side output of the isolation transformer is 3 phi 400VAC and 50Hz, and the isolation transformer supplies power for 380V auxiliary loads such as a cooling fan set and a water pump;
the secondary transformer 9 is electrically connected with the isolation transformer 8, the secondary side output of the secondary transformer 9 is 3 phi 230VAC and 50Hz, and the secondary side output is used for supplying power to secondary loads, and the secondary loads comprise loads such as work, air conditioners and illumination.
The lithium battery pack 5 is mainly composed of lithium iron phosphate batteries. The lithium battery pack 5 is mainly responsible for providing a propulsion power supply for the whole ship and charging the ship by using a shore power direct-current charging pile when the fixed wharf stops. The lithium battery of this example recommended a total capacity of 553kWh, equipped with a BMS management system. The lithium battery pack is provided with a high-voltage box, and the high-voltage box is a unit for externally supplying power, communicating and managing the internal battery of the lithium battery system. Mainly contain BMS module, charge-discharge control return circuit, scram button, liquid crystal display etc. mainly play system protection, insulating monitoring, external communication, external power supply, to functions such as lithium cell charge. The Battery Management System (BMS) is composed of a main control module (BCU), a slave control module (BMU), a temperature control module (BTU) and a display module BDU. The BCU communicates with the BMU and the BTU at high speed through the CAN interface. The BMS system of the battery system is managed in three levels:
the first level is battery pack management, each battery pack is configured with 2 BTUs and 1 BMU, the temperature and the voltage of all batteries connected in series in the battery pack are mainly collected, and the temperature and the voltage parameters are communicated to the BCU2 of the cluster.
The second level is battery cluster management, each battery pack is provided with 1 BCU2 and integrated with a high-voltage box, and the BCU2 acquires voltage and temperature data uploaded by each BTU and BMU; collecting charging and discharging current and total voltage of a battery cluster; controlling the charging and discharging process and the heating process of the cluster through a control loop; SOC calculation, insulation measurement, state diagnosis, fault location, system self-inspection, cabin temperature detection and the like of the battery cluster are communicated with the domain management unit BCU1, and state information, fault information, voltage, current, temperature and insulation parameters of the battery cluster are uploaded.
The third level is battery system management, and the domain management box is provided with 1 BCU1 unit. The BCU1 communicates with the BCU2 of each battery cluster, receives uploaded battery cluster state information, fault information, voltage, current, temperature and insulation parameters and sends commands of standby, charging and discharging and the like to the BCU 2; the system is communicated with a whole ship direct current power distribution system through a CAN bus, uploads the data and information of each battery cluster, receives an instruction transmitted by the whole ship system and feeds back the state of the battery system; and the CAN bus is communicated with a driving control station system to upload data and information of each battery cluster.
According to the data collected at present, the conventional diesel engine power patrol boat is used once a week on average, and the use time of each time is about 4 hours. An average of 150kg of diesel fuel was consumed per hour. The annual diesel oil consumption is 31.2 t.
The carbon strength coefficient of the reference diesel oil is 3.1605t/t, the standard oil coefficient of the diesel oil is 1.0199, and the standard coal coefficient of the diesel oil is 1.4571. GB 20891-2014 specifies that the emission limits of the exhaust pollutants of the diesel engine for the non-road mobile machinery are 3.5 x 10 < -6 > t/kWh CO (carbon monoxide), 6.4 x 10 < -6 > t/kWh HC + NOx (hydrocarbon + nitrogen oxide), 0.2 x 10 < -6 > t/kWh PM (particulate matter), and the total emission of the pollutants is 10.1 x 10 < -6 > t/kWh.
(1) The usage amount of diesel oil for replacing ships in the next year after oil-to-electricity conversion is 31.2 t.
Equivalent year substituted oil quantity is 31.2t multiplied by 1.0199 is 31.82t
Equivalent year substituted standard coal quantity is 31.2t multiplied by 1.4571 t 45.46t
(2) Annual CO2Volume reduction:
CO2the discharge capacity is 31.2t multiplied by 3.1605t/t which is 98.61 t.
The calculation shows that the environmental protection and emission reduction benefits are obvious after the oil of a single patrol boat is changed into electricity according to the current principle, and the electric energy substitution and emission reduction effects are more obvious and the social benefits are huge after all the existing patrol boats along the Yangtze river are changed into the electromotion.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a power configuration system of battery power boats and ships, includes electric connection's lithium cell group, direct current bus frequency conversion electrical control equipment and propulsion motor in proper order, through direct current bus frequency conversion electrical control equipment drive propulsion motor, its characterized in that, direct current bus frequency conversion electrical control equipment includes the block board, the block board is installed in the cabin of boats and ships, the block board realizes whole ship electric energy distribution, transform and management, the block board is including advancing inverter and supplementary inverter, advance the inverter with supplementary inverter connect in parallel and set up and with lithium cell group electric connection.
2. The power distribution system of a battery powered vessel of claim 1, further comprising a shore power box connected to an external power supply for secondary load distribution.
3. The power distribution system of claim 2, wherein the propulsion inverter is electrically connected to the propulsion motor, and the propulsion inverter performs VVVF inversion on the battery dc power for stepless variable frequency speed regulation of the propulsion motor.
4. The power distribution system of claim 3, further comprising an isolation transformer, wherein the isolation transformer is electrically connected to the auxiliary inverter, and the isolation transformer is used for isolation and voltage conversion of the auxiliary inverter.
5. The power distribution system of claim 4, further comprising a secondary transformer, wherein the secondary transformer is electrically connected to the isolation transformer, and wherein the secondary transformer is used for supplying power to a secondary load.
6. The power configuration system of claim 5, further comprising a BMS battery management system electrically connected to the battery pack, wherein the BMS battery management system is composed of a master control module (BCU), a slave control module (BMU), a temperature control module (BTU), and a display module (BDU), and the display module (BDU) communicates with the slave control module (BMU) and the temperature control module (BTU) at a high speed through a CAN interface.
7. The power distribution system of a battery-powered vessel according to any of claims 1-6, wherein there are two groups of said lithium battery packs, and said two groups of said lithium battery packs are electrically connected in parallel by a dc bus.
8. A ship, characterized by comprising the power distribution system of the battery-powered ship of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111475838.2A CN113998090A (en) | 2021-12-06 | 2021-12-06 | Power configuration system of battery power ship and ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111475838.2A CN113998090A (en) | 2021-12-06 | 2021-12-06 | Power configuration system of battery power ship and ship |
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| CN113998090A true CN113998090A (en) | 2022-02-01 |
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| CN202111475838.2A Pending CN113998090A (en) | 2021-12-06 | 2021-12-06 | Power configuration system of battery power ship and ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560067A (en) * | 2022-03-11 | 2022-05-31 | 广东技术师范大学 | Intelligent new energy ship power platform system and control method |
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-
2021
- 2021-12-06 CN CN202111475838.2A patent/CN113998090A/en active Pending
Patent Citations (9)
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| CN103762613A (en) * | 2012-09-17 | 2014-04-30 | 通用电气能源能量变换技术有限公司 | Power distribution systems |
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Application publication date: 20220201 |