CN214336778U - Multi-system container type power battery unit for ship and system architecture thereof - Google Patents
Multi-system container type power battery unit for ship and system architecture thereof Download PDFInfo
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- CN214336778U CN214336778U CN202120746197.9U CN202120746197U CN214336778U CN 214336778 U CN214336778 U CN 214336778U CN 202120746197 U CN202120746197 U CN 202120746197U CN 214336778 U CN214336778 U CN 214336778U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses a marine multi-system container type power battery unit and a system framework thereof; the marine multi-system container type power battery unit comprises a container body and a battery system, wherein the battery system comprises at least two battery subsystems, the battery cores of the battery subsystems are the same, the battery packs of the battery subsystems are the same, and the battery grouping mode of each battery subsystem is the same; each battery subsystem is provided with a battery management system; the container body is provided with a quick connector. The utility model has high battery balance, which is beneficial to prolonging the service life of the battery; the system redundancy is high; the interface connector has small configuration parameters, small size and high economy; different power system frameworks can be formed, and the use is more flexible.
Description
Technical Field
The utility model relates to a boats and ships technical field, in particular to marine multisystem container formula power battery unit and system architecture thereof.
Background
With the increasing attention on environmental protection in the world and the rapid development of new energy technologies, lithium batteries are increasingly applied to ship energy storage and power. Due to the fact that the power consumption of ships is large, particularly pure battery power ships, the capacity of lithium batteries needing to be configured is usually in the MWh level, and in combination with the consideration of safety, the ship lithium battery system is usually formed by connecting a plurality of battery modules/battery packs in series and in parallel. The lithium battery pack is generally arranged on the ship in two ways: one is fixedly arranged in a battery cabin in a ship body, and the battery system needs to be charged at a wharf; the other type is integrated in a container, the container can be replaced at a wharf, the battery replacement of the ship is realized, and the container with the battery system can be transported to a charging station through a road for charging.
Similar to electric vehicles, the charging duration of the lithium battery is one of important factors restricting the application of pure battery powered ships, and particularly, the transportation ship takes the operating efficiency as a main profit index. Therefore, the ship battery replacement operation mode becomes one of the hot spots of the research in the industry.
At present, no container type battery power unit in China has been certified by the classification society of China. However, lithium batteries have been used in inland river boats as a main power source for ships and as a propulsion power source. The current technology has the following problems:
1. the power battery container is connected with a ship power grid in a cable fixed connection mode, and the larger the interface current is, the more the required cable specifications and the number are. The connection and disconnection of a plurality of cables cannot be frequently operated, so that the battery unit is only suitable for application scenes fixedly mounted on a ship and cannot meet the use requirement of a power conversion operation ship.
2. In consideration of the operation economy, the higher the charge of a single container, the better the operation economy. And the higher the amount of power, the larger the interface current. A standard 20-foot container, for example, considering the equipment such as an environment control system, a safety system and an auxiliary system arranged inside, meets the arrangement requirement of China Classification based on the current marine battery pack product, and can carry about 1500 kWh-2000 kWh of electric quantity. The direct current interface is adopted for outputting electric quantity, and the interface current is about kiloampere level according to the electric utilization characteristic of the ship load. Usually, a large-current connector for a ship is mostly in an alternating current system, and a direct current connector commonly used for an electric automobile is usually in a 200A or 250A, so that a quick connector is difficult to configure for the level direct current interface, and an optional mature product is difficult to find in the market.
3. The battery pack with the capacity of 1500kWh has the defects of high management difficulty of a battery management system, poor balancing effect and unfavorable service life of a lithium battery.
4. The container type battery power unit with the single battery system is adopted, when single fault of the battery system occurs, the whole container battery system cannot operate, and the system redundancy is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the above-mentioned defect that prior art exists, provide a marine multisystem container formula power battery unit and system architecture thereof.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a multi-system container type power battery unit for a ship comprises a container body and a battery system arranged in the container body, wherein the battery system comprises at least two battery subsystems, the electric core of each battery subsystem is the same, the battery pack of each battery subsystem is the same, and the battery grouping mode of each battery subsystem is the same; each battery subsystem is provided with a battery management system; the battery management system is used for independently controlling each battery subsystem; the container body is provided with a quick connector.
A marine multi-system container type power battery unit system structure comprises a plurality of marine multi-system container type power battery units; the marine multi-system container type power battery unit system framework further comprises a direct current distribution board, a direct current bus bar is arranged on the direct current distribution board, and a DC/DC chopping module used for being connected with the marine multi-system container type power battery unit is connected onto the direct current bus bar; the direct current busbar is also connected with an inverter.
In the preferred scheme, each marine multi-system container type power battery unit is connected with only one DC/DC chopper module; each battery subsystem in the same marine multi-system container type power battery unit is simultaneously connected with a DC/DC chopper module corresponding to the marine multi-system container type power battery unit; and a quick connector is arranged between the battery system of the marine multi-system container type power battery unit and the DC/DC chopper module corresponding to the marine multi-system container type power battery unit.
A charging and discharging control system for controlling the charging and discharging states of the battery subsystems is arranged in the marine multi-system container type power battery unit; and each battery management system in the marine multi-system container type power battery unit is connected with a charge and discharge control system in the marine multi-system container type power battery unit.
And all the battery subsystems in the marine multi-system container type power battery unit are simultaneously connected with the quick connector on the marine multi-system container type power battery unit.
And circuit breakers are arranged between each battery subsystem in the marine multi-system container type power battery unit and the quick connectors on the marine multi-system container type power battery unit.
In another preferred scheme, each battery subsystem in the marine multi-system container type power battery unit is respectively connected with a DC/DC chopper module; and a quick connector is arranged between each battery subsystem and the corresponding DC/DC chopper module.
The marine multi-system container type power battery unit is provided with quick connectors with the same number as that of battery subsystems in the marine multi-system container type power battery unit; a quick connector is connected to each battery subsystem.
And fuses are arranged between the DC/DC chopper module and the DC busbar and between the inverter and the DC busbar.
A bus switch is arranged on the direct current bus; and both sides of the busbar switch are provided with a DC/DC chopping module and an inverter.
The beneficial effects of the utility model reside in that: in the system architecture of the utility model, each battery subsystem operates independently, which greatly improves the redundancy of the whole power system, and the single fault of the battery subsystem can not lead to the failure of the whole marine multi-system container type power battery unit; the battery has high balance, which is beneficial to prolonging the service life of the battery. The utility model discloses in, system redundancy nature is high, and battery system's single trouble only leads to single battery subsystem shutdown, can not lead to whole container formula battery power pack to lose the electricity. The utility model discloses in, interface current is according to the capacity setting of single battery subsystem, and is little than traditional mode interface current, and the security is high, is favorable to adopting automatic quick connector, and connector configuration parameter is little, and the size is little, and economic nature is high. The utility model discloses a marine multi-system container formula power battery unit can constitute different electric power system frameworks, uses more in a flexible way.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, a multi-system container type power battery unit 10 for a ship includes a container body 11 and a battery system 12 disposed in the container body, where the battery system includes at least two battery subsystems 13, the battery cores of the battery subsystems are the same, the battery packs of the battery subsystems are the same, and the battery grouping mode of the battery subsystems is the same. Each battery subsystem adopts the same electric core/battery pack and grouping mode, so that the electric quantity, the voltage and the charge-discharge coefficient are consistent.
Each battery subsystem is provided with a battery management system (not shown in the figure). The battery management system is used for independently controlling each battery subsystem. The container body is provided with a quick connector.
Since the structure of the marine multi-system container type power battery unit 10 is clearly shown in the structural diagrams (i.e., fig. 1 and 2) of the marine multi-system container type power battery unit system structure, the marine multi-system container type power battery unit 10 is not shown in a separate drawing.
When the marine multi-system container type power battery unit is applied, two system architectures are provided, and the two system architectures are respectively the following two embodiments.
Example 1
As shown in fig. 1, a marine multi-system container type power battery unit system architecture includes a plurality of marine multi-system container type power battery units 10.
In this embodiment, the battery system 12 of the marine multi-system container type power battery unit 10 includes two battery subsystems 13. In other embodiments, the battery system 12 may include more than two battery subsystems.
The marine multi-system container type power battery unit system architecture also comprises a direct current distribution board 20. The direct-current distribution board 20 is provided with a direct-current busbar 21, and the direct-current busbar is connected with a DC/DC chopper module 22 for connecting with the marine multi-system container type power battery unit 10; an inverter 23 is also connected to the dc bus bar 21.
In the embodiment, each marine multi-system container type power battery unit 10 is respectively connected with only one DC/DC chopper module 22; each battery subsystem in the same marine multi-system container type power battery unit is simultaneously connected with a DC/DC chopper module corresponding to the marine multi-system container type power battery unit; a quick connector 31 is arranged between the battery system 12 of the marine multi-system container type power battery unit and the DC/DC chopper module 22 corresponding to the marine multi-system container type power battery unit.
The quick connector 31 has a plug function, and when it is plugged, the circuit is turned on, and when it is unplugged, the circuit is turned off. In order to show the insertion and extraction function of the quick connector 31, the quick connector 31 between the DC/DC chopper module and the container case is shown in fig. 1 in a state in which the two parts constituting the quick connector are separated.
A charging and discharging control system (not shown in the figure) for controlling the charging and discharging states of the battery subsystems is arranged in the marine multi-system container type power battery unit 10; and each battery management system in the marine multi-system container type power battery unit is connected with a charge and discharge control system in the marine multi-system container type power battery unit.
Each marine multisystem container type power battery unit 10 is provided with a quick connector 31. Each battery subsystem 13 in the marine multi-system container type power battery unit is simultaneously connected with a quick connector 31 on the marine multi-system container type power battery unit.
And circuit breakers 14 are arranged between each battery subsystem in the marine multi-system container type power battery unit and the quick connectors on the marine multi-system container type power battery unit.
In the system architecture of this embodiment, after each battery subsystem in marine multisystem container formula power battery unit inserts public direct current female arranging in this container box through the circuit breaker, link to each other with boats and ships electric wire netting through a quick connector. Each marine multi-system container type power battery unit is provided with a charge and discharge control system for controlling the charge and discharge state of each battery subsystem.
In the system architecture of this embodiment, under the control of the charging and discharging control system, the battery subsystems in the marine multi-system container type power battery unit do not operate simultaneously.
At the same time, only one battery subsystem is powered. When the first battery subsystem discharges to the set cut-off capacity, the second battery subsystem is connected to the grid for supplying power, and the first battery subsystem is cut off at the same time, and the like. And after the power supply of the previous battery subsystem is finished, the previous battery subsystem is cut off when the power supply of the next battery subsystem is started.
When charging is performed, only one battery subsystem is charged at a time. When the first battery subsystem is charged, the second battery subsystem starts to be charged, and the first battery subsystem is cut off, and the like. And after the previous battery subsystem is charged, the previous battery subsystem is cut off when the next battery subsystem is charged.
The discharging and charging processes are controlled by a charging and discharging control system.
The charging and discharging control system and the management system of the battery subsystem are provided with interfaces, state signals of the battery subsystem are obtained, the charging and discharging of the battery subsystem are controlled, and the breaker of the battery subsystem controls the power supply and the disconnection of the battery subsystem.
In the system architecture of the embodiment, the battery capacity of the on-grid operation (charging or discharging) is 1/n of the conventional design, wherein n is the number of battery subsystems in a single marine multi-system container type power battery unit, so that the management performance is good, the battery balance is high, the service life of the battery is prolonged, and the system safety is improved.
In the system architecture of this embodiment, every battery subsystem independent operation has improved whole electric power system's redundancy greatly, and the single trouble of battery subsystem can not lead to whole marine multisystem container formula power battery unit to become invalid.
Example 2
As shown in fig. 2, a multi-system container type power battery unit system architecture for a ship includes a plurality of multi-system container type power battery units 10 for a ship.
In this embodiment, the battery system 12 of the marine multi-system container type power battery unit 10 includes two battery subsystems 13. In other embodiments, the battery system 12 may include more than two battery subsystems.
The marine multi-system container type power battery unit system architecture also comprises a direct current distribution board 20. The direct-current distribution board 20 is provided with a direct-current busbar 21, and the direct-current busbar is connected with a DC/DC chopper module 22 for connecting with the marine multi-system container type power battery unit 10; an inverter 23 is also connected to the dc bus bar 21.
Each battery subsystem 13 in each marine multi-system container type power battery unit is respectively connected with a DC/DC chopper module 22; a quick connector 32 is provided between each battery subsystem 13 and the corresponding DC/DC chopper module 22.
The quick connector 32 has a plugging function, and is electrically connected when plugged in and disconnected when unplugged. To illustrate the plugging and unplugging function of the quick connector 32, the quick connector 32 between the DC/DC chopper module and the battery subsystem is shown in fig. 2 with the two portions making up the quick connector in a separated state.
The marine multi-system container type power battery unit is provided with quick connectors the number of which is the same as that of battery subsystems in the marine multi-system container type power battery unit, and each battery subsystem 13 is connected with one quick connector 32.
In the system architecture of the embodiment, each battery subsystem is individually provided with a quick connector and is connected with a ship power grid through an individual DC/DC chopper module, so that the battery subsystems operate independently. And the ship power grid distributes loads of all battery subsystems in a balanced manner through the DC/DC chopper module.
In the system architecture of the embodiment, 2 DC/DC are configured in each marine multisystem container type power battery unit, so that the current flowing through each DC/DC is 1/2 of the original system DC/DC; each container is provided with two interfaces, and the current flowing through each interface is 1/2 of the current of the original system interface. The reduction of interface current is beneficial to the type selection of the quick connector, and the convenience and safety of connection and disconnection operations.
In the system architecture of this embodiment, every battery subsystem independent operation has improved whole electric power system's redundancy greatly, and the single trouble of battery subsystem can not lead to whole marine multisystem container formula power battery unit to become invalid. The management capacity of the battery management system is 1/n of the conventional design, wherein n is the number of battery subsystems in a single marine multi-system container type power battery unit. Therefore, the management performance is good, the battery balance is high, and the service life of the battery is prolonged.
The utility model discloses a container formula battery power pack design of a plurality of subsystems, on keeping the unchangeable basis of battery total capacity in the container, with single battery system decomposition for two or more battery subsystems in the container box, every battery subsystem adopts the same electricity core/battery package and group's mode, therefore electric quantity, voltage, charge-discharge coefficient are all unanimous. Each battery subsystem is provided with a battery management system which can independently control each battery subsystem.
The utility model discloses in, system redundancy nature is high, and battery system's single trouble only leads to single battery subsystem shutdown, can not lead to whole container formula battery power pack to lose the electricity.
The utility model discloses in, interface current is according to the capacity setting of single battery subsystem, and is little than traditional mode interface current, and the security is high, is favorable to adopting automatic quick connector, and connector configuration parameter is little, and the size is little, and economic nature is high.
The utility model discloses in, DC/DC chopper module's configuration parameter is little, and the economic nature is high, saves installation space simultaneously.
The utility model discloses a marine multi-system container formula power battery unit can constitute different electric power system frameworks, uses more in a flexible way.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A multi-system container type power battery unit for a ship is characterized by comprising a container body and a battery system arranged in the container body, wherein the battery system comprises at least two battery subsystems, the battery cores of the battery subsystems are the same, the battery packs of the battery subsystems are the same, and the battery grouping modes of the battery subsystems are the same; each battery subsystem is provided with a battery management system; the container body is provided with a quick connector.
2. A marine multisystem container type power battery unit system architecture, characterized in that it comprises a plurality of marine multisystem container type power battery units according to claim 1; the marine multi-system container type power battery unit system framework further comprises a direct current distribution board, a direct current bus bar is arranged on the direct current distribution board, and a DC/DC chopping module used for being connected with the marine multi-system container type power battery unit is connected onto the direct current bus bar; the direct current busbar is also connected with an inverter.
3. The marine multi-system container-type power battery cell system architecture of claim 2, wherein each marine multi-system container-type power battery cell is connected with only one DC/DC chopper module; each battery subsystem in the same marine multi-system container type power battery unit is simultaneously connected with a DC/DC chopper module corresponding to the marine multi-system container type power battery unit; and a quick connector is arranged between the battery system of the marine multi-system container type power battery unit and the DC/DC chopper module corresponding to the marine multi-system container type power battery unit.
4. The marine multi-system container type power battery unit system architecture of claim 3, wherein a charge and discharge control system for controlling the charge and discharge states of the battery subsystems is arranged in the marine multi-system container type power battery unit; and each battery management system in the marine multi-system container type power battery unit is connected with a charge and discharge control system in the marine multi-system container type power battery unit.
5. The marine multi-system container-type power cell system architecture of claim 3, wherein each battery subsystem in a marine multi-system container-type power cell is simultaneously connected to a quick connector on the marine multi-system container-type power cell.
6. The marine multi-system container type power battery cell system architecture as claimed in claim 3, wherein a circuit breaker is provided between each battery subsystem in the marine multi-system container type power battery cell and the quick connector on the marine multi-system container type power battery cell.
7. The marine multi-system container type power battery unit system framework of claim 2, wherein each battery subsystem in the marine multi-system container type power battery unit is respectively connected with a DC/DC chopper module; and a quick connector is arranged between each battery subsystem and the corresponding DC/DC chopper module.
8. The marine multi-system container type power battery cell system architecture of claim 7, wherein the marine multi-system container type power battery cell is provided with the same number of quick connectors as the number of battery subsystems in the marine multi-system container type power battery cell; a quick connector is connected to each battery subsystem.
9. The marine multi-system container type power battery unit system framework as claimed in claim 2, wherein fuses are arranged between the DC/DC chopper module and the DC bus bar and between the inverter and the DC bus bar.
10. The marine multi-system container type power battery unit system architecture as claimed in claim 2, wherein a bus bar switch is provided on the dc bus bar; and both sides of the busbar switch are provided with a DC/DC chopping module and an inverter.
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| CN202120746197.9U CN214336778U (en) | 2021-04-13 | 2021-04-13 | Multi-system container type power battery unit for ship and system architecture thereof |
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| CN202120746197.9U CN214336778U (en) | 2021-04-13 | 2021-04-13 | Multi-system container type power battery unit for ship and system architecture thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968224A (en) * | 2021-04-13 | 2021-06-15 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Multi-system container type power battery unit for ship and system architecture thereof |
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2021
- 2021-04-13 CN CN202120746197.9U patent/CN214336778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968224A (en) * | 2021-04-13 | 2021-06-15 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Multi-system container type power battery unit for ship and system architecture thereof |
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