CN219277775U - Ship hybrid power system - Google Patents
Ship hybrid power system Download PDFInfo
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- CN219277775U CN219277775U CN202320140279.8U CN202320140279U CN219277775U CN 219277775 U CN219277775 U CN 219277775U CN 202320140279 U CN202320140279 U CN 202320140279U CN 219277775 U CN219277775 U CN 219277775U
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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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Abstract
The utility model relates to the technical field of ship power, in particular to a ship hybrid power system, which comprises a direct current distribution board, a first direct current fuse, a DC/DC power module, a first DC/DC power module direct current reactor, a first circuit breaker and a lithium battery pack, wherein the lithium battery pack is electrically connected with a wharf charging pile through a shore power socket, and further comprises a second circuit breaker and a second direct current fuse; the shore power socket comprises more than two output ends, the direct-current distribution board comprises more than two direct-current busbar, the output ends of the shore power socket, the second circuit breaker, the second direct-current fuse and one end of the direct-current busbar are sequentially electrically connected, and the other end of the direct-current busbar is electrically connected with the first direct-current fuse and the load respectively. The utility model strengthens overload protection and short-circuit protection functions for the charging circuit and the lithium battery pack, and has safety and reliability.
Description
Technical Field
The utility model relates to the technical field of ship power, in particular to a ship hybrid power system.
Background
The hybrid ship is a double power source ship having an engine system and an energy storage system, referring to fig. 1, the conventional power system includes an engine, a lithium battery pack, an energy management system BMS, a direct current distribution board, a propulsion motor, a daily transformer, an alternating current daily distribution board, a daily load, and the like. The lithium battery packs of the ship are electrically connected with a shore power charging socket arranged at the ship end, and each lithium battery pack can be directly charged by inserting a direct-current charging pile or a charging gun device of the wharf into the shore power charging socket. However, existing hybrid ship charging has the following disadvantages:
the lithium battery pack is directly charged by adopting the wharf charging piles, and is mainly charged in a one-to-one and point-to-point charging mode at present, namely, each group of lithium batteries is provided with at least one set of wharf charging piles and charging guns which are corresponding to the lithium batteries according to the capacity of each group of lithium batteries, and the normal charging requirements of the ship lithium battery pack can be met. For ships with more lithium battery packs and larger capacity, the number of wharf charging piles and charging gun devices which are required to be built and matched is correspondingly larger, which means that the construction engineering quantity and the matching cost of the wharf charging piles are larger.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problem to be solved by the utility model is to provide a ship hybrid power system, and the power supply capacity of the ship hybrid power system is improved.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a boats and ships hybrid power system, including direct current distribution board, first direct current fuse, DC/DC power module, direct current reactor, first circuit breaker and the lithium cell group that connects gradually, lithium cell group is through bank electric socket and pier fills electric pile electricity connection, still includes second circuit breaker and second direct current fuse;
the shore power socket comprises more than two output ends, the direct-current distribution board comprises more than two direct-current busbar, the output ends of the shore power socket, the second circuit breaker, the second direct-current fuse and one end of the direct-current busbar are sequentially electrically connected, and the other end of the direct-current busbar is electrically connected with the first direct-current fuse and the load respectively.
Further, the power supply system also comprises a daily transformer, a first sine wave filter, a first DC/AC power module, a third direct current fuse and a daily distribution board electrically connected with a shore power supply;
the daily distribution board comprises more than two input and output ends which are interlocked with each other, and the input end of the daily distribution board, the daily transformer, the first sine wave filter, the first DC/AC power module, the third DC fuse and one end of the DC busbar are electrically connected in sequence.
Further, the power supply further comprises a third circuit breaker, a second DC/AC power module and a fourth direct current fuse;
the load comprises a propulsion motor in transmission connection with the propeller, and the propulsion motor, the third circuit breaker, the second DC/AC power module, the fourth direct current fuse and the other end of the direct current busbar are sequentially and electrically connected.
Further, the dc distribution board further includes a fifth dc fuse and a fourth circuit breaker, the number of the dc bus bars is two, one dc bus bar is electrically connected with one end of the fifth dc fuse through the fourth circuit breaker, and the other end of the fifth dc fuse is electrically connected with the other dc bus bar.
Further, the power supply system further comprises a diesel generator set, a fifth circuit breaker, a second sine wave filter and a sixth direct current fuse which are electrically connected in sequence, wherein the sixth direct current fuse is also electrically connected with one end of the direct current busbar.
The utility model has the beneficial effects that: the utility model provides a boats and ships hybrid power system, shore power socket are connected to direct current distribution board through second circuit breaker and second direct current fuse, evenly distribute electric quantity to each lithium cell group through the direct current distribution board and charge. The direct current busbar of the direct current distribution board has wide applicability, and can effectively consider the vehicular charging pile and the high-power marine charging pile, thereby realizing many-to-many or one-to-many charging, not only conforming to the development trend of the marine high-power charging pile, but also effectively reducing the construction engineering quantity of the future wharf charging pile and the matching cost thereof. In addition, a second breaker and a second direct current fuse are arranged between the shore power socket and the direct current distribution board, and a first breaker and a first direct current fuse are arranged between the lithium battery pack and the direct current distribution board.
Drawings
FIG. 1 is a prior art connection block diagram described in the background;
FIG. 2 is a block diagram illustrating a connection of a marine hybrid system according to the present utility model;
description of the reference numerals:
1. a shore power socket; 2. a DC power distribution board; 3. a daily-use power distribution board; 4. a lithium battery pack; 5. a diesel generator set; 6. a first circuit breaker; 7. a second circuit breaker; 8. a third circuit breaker; 9. a fourth circuit breaker; 10. a fifth circuit breaker; 11. a first direct current fuse; 12. a second DC fuse; 13. a third DC fuse; 14. a fourth dc fuse; 15. a fifth direct current fuse; 16. a sixth direct current fuse; 17. a first DC/AC power module; 18. a second DC/AC power module; 19. an AC/DC power module; 20. a DC/DC power module; 21. a first sine wave filter; 22. a second sine wave filter; 23. 400V daily-use transformer; 24. a DC reactor; 25. a variable frequency cabinet; 26. a direct current busbar; 27. a propulsion motor; 28. dock charging piles; 29. a shore power source.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 2, the utility model provides a ship hybrid power system, which comprises a direct current distribution board, a first direct current fuse, a DC/DC power module, a direct current reactor, a first circuit breaker and a lithium battery pack, wherein the direct current distribution board, the first direct current fuse, the DC/DC power module, the direct current reactor, the first circuit breaker and the lithium battery pack are electrically connected with a wharf charging pile through a shore power socket, and the ship hybrid power system further comprises a second circuit breaker and a second direct current fuse;
the shore power socket comprises more than two output ends, the direct-current distribution board comprises more than two direct-current busbar, the output ends of the shore power socket, the second circuit breaker, the second direct-current fuse and one end of the direct-current busbar are sequentially electrically connected, and the other end of the direct-current busbar is electrically connected with the first direct-current fuse and the load respectively.
From the above description, the beneficial effects of the utility model are as follows: the utility model provides a boats and ships hybrid power system, shore power socket are connected to direct current distribution board through second circuit breaker and second direct current fuse, evenly distribute electric quantity to each lithium cell group through the direct current distribution board and charge. The direct current busbar of the direct current distribution board has wide applicability, and can effectively consider the vehicular charging pile and the high-power marine charging pile, thereby realizing many-to-many or one-to-many charging, not only conforming to the development trend of the marine high-power charging pile, but also effectively reducing the construction engineering quantity of the future wharf charging pile and the matching cost thereof. In addition, a second breaker and a second direct current fuse are arranged between the shore power socket and the direct current distribution board, and a first breaker and a first direct current fuse are arranged between the lithium battery pack and the direct current distribution board.
Further, the power supply system also comprises a daily transformer, a first sine wave filter, a first DC/AC power module, a third direct current fuse and a daily distribution board electrically connected with a shore power supply;
the daily distribution board comprises more than two mutually interlocked input ends, and the input ends of the daily distribution board, the daily transformer, the first sine wave filter, the first DC/AC power module, the third DC fuse and one end of the DC busbar are sequentially and electrically connected.
From the above description, the direct current busbar, the third direct current fuse, the first DC/AC power module and the first sine wave filter are connected to the alternating current daily power distribution board, so that normal power supply requirements of daily loads such as living, air conditioning ventilation, illumination, fire protection and the like on a ship are synchronously maintained, and normal charging work is ensured. The alternating current shore power is additionally provided to the ship without depending on the wharf.
Further, the power supply further comprises a third circuit breaker, a second DC/AC power module and a fourth direct current fuse;
the load comprises a propulsion motor in transmission connection with the propeller, and the propulsion motor, the third circuit breaker, the second DC/AC power module, the fourth direct current fuse and the other end of the direct current busbar are sequentially and electrically connected.
From the above description, the overload protection and short-circuit protection functions of the charging circuit and the lithium battery pack are enhanced, and better safety and reliability are achieved.
Further, the dc distribution board further includes a fifth dc fuse and a fourth circuit breaker, the number of the dc bus bars is two, one dc bus bar is electrically connected with one end of the fifth dc fuse through the fourth circuit breaker, and the other end of the fifth dc fuse is electrically connected with the other dc bus bar.
From the above description, the fourth breaker can be in a closing state under normal working conditions, and the dock charging pile charges each lithium battery pack through two direct current bus bars of the direct current distribution board.
Further, the power supply system further comprises a diesel generator set, a fifth circuit breaker, a second sine wave filter and a sixth direct current fuse which are electrically connected in sequence, wherein the sixth direct current fuse is also electrically connected with one end of the direct current busbar.
From the above description, it can be seen that the diesel generator set is electrically connected with one end of the dc busbar through the fifth circuit breaker, the second sine wave filter and the sixth dc fuse, and the diesel generator set can be used as a charging power source, and distributes the power source to the lithium battery pack through the dc busbar, so that the surplus power of the diesel generator is used for charging the lithium battery pack under the condition of ensuring the normal operation of the ship, and the energy efficiency is further improved by peak clipping and valley filling.
Referring to fig. 2, a first embodiment of the utility model is as follows: there is provided a ship hybrid power system including a shore power socket 1, a direct current distribution board 2, a daily distribution board 3, and two energy storage devices including a lithium battery pack 4, a diesel generator set 5, a first circuit breaker 6, a second circuit breaker 7, a third circuit breaker 8, a fourth circuit breaker 9, a fifth circuit breaker 10, a first direct current fuse 11, a second direct current fuse 12, a third direct current fuse 13, a fourth direct current fuse 14, a fifth direct current fuse 15, a sixth direct current fuse 16, a first DC/AC power module 17, a second DC/AC power module 18, an AC/DC power module 19, a DC/DC power module 20, a first sine wave filter 21, a second sine wave filter 22, a 400V daily transformer 23, a direct current reactor 24, and a load.
In this embodiment, the energy storage device is disposed outside the frequency conversion cabinet 25, and the dc distribution board includes two dc bus bars 26, specifically, one dc bus bar is electrically connected to one end of the fifth dc fuse through the fourth circuit breaker, and the other end of the fifth dc fuse is electrically connected to the other dc bus bar. The direct current distribution board is electrically connected with the two energy storage devices through the two direct current busbar respectively. The energy storage device is internally provided with an energy management system EMS, and the direct current distribution board is internally provided with a power management system PMS, so that the input current and the output current can be distributed in an equalizing way. And under normal working conditions, a fourth circuit breaker between the two direct current busbar of the direct current distribution board is in a closing state. The connection mode of the two direct current busbar and the energy storage device is the same, taking one direct current busbar as an example, the other end of the direct current busbar is respectively and electrically connected with the lithium battery pack and the load, and specifically, the other end of the direct current busbar, the first direct current fuse, the DC/DC power module, the direct current reactor, the first circuit breaker and the lithium battery pack are sequentially and electrically connected. The load comprises a propulsion motor 27 in transmission connection with the propeller, and the propulsion motor, the third circuit breaker, the second DC/AC power module, the fourth DC fuse and the other end of the DC busbar are electrically connected in sequence.
In this embodiment, the diesel generator set is electrically connected in sequence through a fifth circuit breaker, a second sine wave filter, an AC/DC power module and one end of the DC busbar. The 400V alternating voltage output by the diesel generating set is rectified and transformed by the AC/DC power module, and the direct voltage output to the direct current busbar is 750V. For the hybrid power ship, the external wharf charging pile and the diesel generator set arranged inside the ship can be used as charging power sources for charging the lithium battery pack. When the wharf charging pile 28, the charging gun or the charging line facility fails to cause charging failure, the diesel generator set on the ship can be selectively started to be connected to the power grid for charging the lithium battery set. Specifically, when the lithium battery pack electric quantity SOC is lower than a preset value in the ship operation process, the preset value of the preferable lithium battery pack electric quantity SOC is 15%, a diesel generator set on the ship can be started, and under the condition that the normal operation of the ship is ensured, surplus power generated by the operation of the diesel generator set is used for charging the lithium battery pack, so that peak clipping and valley filling are further carried out, and the energy efficiency is improved. Compared with the traditional method for directly charging the lithium battery pack by the charging pile, the direct current busbar charging mode adopted by the utility model has better flexibility.
In this embodiment, the daily power distribution board is a 400V AC power distribution board, the input ends of the daily power distribution board are respectively electrically connected with the shore power source 29 and two DC bus bars, the inputs of the shore power source 29 and the two DC bus bars are interlocked with each other, and specifically, two input output ends of the daily power distribution board, a 400V daily transformer, a first sine wave filter, a first DC/AC power module, a third DC fuse and one end of the DC bus bar are electrically connected in sequence. When the wharf charging pile charges each lithium battery pack through the direct current busbar of the direct current distribution board, the direct current busbar can also be connected to the daily distribution board through a third direct current fuse, a first DC/AC power module, a first sine wave filter and a 400V daily transformer, and power is supplied to daily loads such as life, air conditioning ventilation, illumination and fire protection on a ship through the daily distribution board, so that normal power supply requirements of the daily loads such as life, air conditioning ventilation, illumination and fire protection on the ship are synchronously maintained, and normal running of charging work is ensured. The alternating current shore power is additionally provided to the ship without depending on the wharf.
Working principle:
the shore power socket is connected to a direct current busbar of a direct current distribution board through a second breaker and a second direct current fuse, an energy management system EMS is arranged in an energy storage device, a power management system PMS is arranged in the direct current distribution board, and the shore power socket is connected to lithium battery packs through a first direct current fuse, a DC/DC power module, a direct current reactor and the first breaker, so that the energy management system EMS and the power management system PMS can balance and coordinate and distribute electric quantity to each lithium battery pack, and therefore current input by one wharf charging pile can be distributed to two lithium battery packs in a balanced mode, and one-to-many charging or many-to-many charging is achieved.
In summary, the present utility model provides a marine hybrid power system, in which a shore power socket is connected to a dc power distribution board through a second circuit breaker and a second dc fuse, and the power is uniformly distributed to each lithium battery pack through the dc power distribution board for charging. The direct current busbar of the direct current distribution board has wide applicability, and can effectively consider the vehicular charging pile and the high-power marine charging pile, thereby realizing many-to-many or one-to-many charging, not only conforming to the development trend of the marine high-power charging pile, but also effectively reducing the construction engineering quantity of the future wharf charging pile and the matching cost thereof. In addition, a second breaker and a second direct current fuse are arranged between the shore power socket and the direct current distribution board, and a first breaker and a first direct current fuse are arranged between the lithium battery pack and the direct current distribution board.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (5)
1. The ship hybrid power system comprises a direct current distribution board, a first direct current fuse, a DC/DC power module, a direct current reactor, a first circuit breaker and a lithium battery pack which are electrically connected in sequence, wherein the lithium battery pack is electrically connected with a wharf charging pile through a shore power socket;
the shore power socket comprises more than two output ends, the direct-current distribution board comprises more than two direct-current busbar, the output ends of the shore power socket, the second circuit breaker, the second direct-current fuse and one end of the direct-current busbar are sequentially electrically connected, and the other end of the direct-current busbar is electrically connected with the first direct-current fuse and the load respectively.
2. The marine hybrid power system of claim 1, further comprising a household transformer, a first sine wave filter, a first DC/AC power module, a third DC fuse, and a household power panel electrically connected to a shore power source;
the daily distribution board comprises more than two input ends, and the input ends of the daily distribution board, the daily transformer, the first sine wave filter, the first DC/AC power module, the third direct current fuse and one end of the direct current busbar are electrically connected in sequence.
3. The marine hybrid system of claim 1, further comprising a third circuit breaker, a second DC/AC power module, and a fourth direct current fuse;
the load comprises a propulsion motor in transmission connection with the propeller, and the propulsion motor, the third circuit breaker, the second DC/AC power module, the fourth direct current fuse and the other end of the direct current busbar are sequentially and electrically connected.
4. The marine hybrid power system of claim 1, wherein the dc distribution board further comprises a fifth dc fuse and a fourth circuit breaker, the number of the dc bus bars is two, one of the dc bus bars is electrically connected to one end of the fifth dc fuse through the fourth circuit breaker, and the other end of the fifth dc fuse is electrically connected to the other dc bus bar.
5. The marine hybrid power system of claim 1, further comprising a diesel generator set, a fifth circuit breaker, a second sine wave filter, an AC/DC power module, and a sixth DC fuse electrically connected in sequence, the sixth DC fuse further electrically connected to one end of the DC busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140279.8U CN219277775U (en) | 2023-01-18 | 2023-01-18 | Ship hybrid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140279.8U CN219277775U (en) | 2023-01-18 | 2023-01-18 | Ship hybrid power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219277775U true CN219277775U (en) | 2023-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320140279.8U Active CN219277775U (en) | 2023-01-18 | 2023-01-18 | Ship hybrid power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219277775U (en) |
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2023
- 2023-01-18 CN CN202320140279.8U patent/CN219277775U/en active Active
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