CN215644654U - Modularized container battery energy storage system suitable for high voltage and large capacity - Google Patents
Modularized container battery energy storage system suitable for high voltage and large capacity Download PDFInfo
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- CN215644654U CN215644654U CN202121964022.1U CN202121964022U CN215644654U CN 215644654 U CN215644654 U CN 215644654U CN 202121964022 U CN202121964022 U CN 202121964022U CN 215644654 U CN215644654 U CN 215644654U
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Abstract
The utility model relates to a modular container battery energy storage system suitable for high voltage and large capacity, which comprises at least one energy storage cabinet, wherein the energy storage cabinet is positioned in a container, each energy storage cabinet is provided with an air inlet and an air outlet, the interior of each energy storage cabinet is divided into three areas from the air inlet to the air outlet, and the three areas are sequentially as follows: air distribution district, energy storage battery district, power unit district, separate by grid or filter screen between the three region, air distribution district direct with the air intake links to each other, energy storage battery district with a plurality of layers are distinguished to the power unit, energy storage battery leave the space between the power unit and supply the air current to pass through. The utility model reduces the wiring length between the energy storage battery and the power unit of the high-voltage cascade battery energy storage system, reduces the cost and the installation workload, is more favorable for installation and transportation, and improves the integration level and the thermal management efficiency of the container energy storage system.
Description
Technical Field
The utility model belongs to the technical field of application of battery energy storage systems, and particularly relates to a modular container battery energy storage system suitable for high voltage and large capacity.
Background
In recent years, the application of battery energy storage has been rapidly developed. The physical forms of battery energy storage include an indoor type and an outdoor type, wherein the outdoor type mostly adopts a container as the installation space and form of the battery and the converter. The container avoids long-period infrastructure construction, and greatly accelerates the construction and application of the battery energy storage system. Thermal management of battery energy storage systems is an important link in their engineering applications. On one hand, the thermal management should ensure that the temperature of each energy storage battery and the power unit is controlled within a reasonable range, and on the other hand, the temperature difference of each energy storage battery should be reduced to ensure the consistency of the temperature distribution of the batteries. For a container type battery energy storage system, the heat management is divided into air cooling and water cooling. The water cooling efficiency is high, but the design is complex, the technical requirement is high, and the water cooling device cannot be used for a high-voltage energy storage system. The air cooling scheme has the advantages of simple structure, wide applicable voltage range and wide application.
At present, because the energy storage battery and the energy storage converter are produced by different professional manufacturers, and the working heating power densities of the energy storage battery and the energy storage converter are different, the adaptive temperature ranges are different, and the sensitivities to temperature changes are different, the energy storage battery and the energy storage converter are usually respectively and intensively arranged in different containers or in the same container but in mutually isolated spaces, so that the targeted heat management design is respectively performed.
The energy storage battery is connected with the energy storage converter through a direct current cable. For a high-voltage cascade battery energy storage system formed by combining a plurality of battery clusters and converter modules, when the arrangement mode is adopted, the number of required high-voltage cables is large, the cost is high, the wiring workload is large, conductor loss is increased by a large number of cables, and the advantage of high efficiency of the high-voltage cascade battery energy storage system is reduced.
The energy storage batteries and the energy storage converters of a very few high-voltage cascade battery energy storage systems are vertically arranged in parallel in different energy storage cabinet bodies of the same container at the same time but at intervals, so that the purpose of reducing the length of a connecting line between the energy storage batteries and a converter module is achieved. At the moment, due to the heat isolation effect of the cabinet body, the energy storage battery and the energy storage converter are not thermally coupled, and the heat management is independently carried out by taking the cabinet body as a unit. However, in this way, the thermal management of the energy storage battery and the energy storage converter cannot be unified and coordinated, and the thermal management efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a modularized container battery energy storage system suitable for high voltage and large capacity, aiming at solving the problems that a high voltage cable is long, the cost is high, the wiring workload is large, the installation is inconvenient and the loss is increased when an energy storage battery and an energy storage converter of the current high voltage cascade battery energy storage system are respectively and intensively installed by adopting containers, and the thermal management efficiency is low because the thermal management cannot be unified and coordinated when the energy storage battery and the energy storage converter are installed side by side at intervals by adopting the containers.
In order to achieve the above purpose, the present invention provides a modular container battery energy storage system suitable for high voltage and large capacity, which includes at least one energy storage cabinet, wherein the energy storage cabinet is located in a container, the energy storage cabinet is provided with an air inlet and an air outlet, the interior of the energy storage cabinet is divided into three areas from the air inlet to the air outlet, and the three areas sequentially include: air distribution area, energy storage battery district, power unit district, are separated by grid or filter screen between the three region, air distribution area directly with the air intake links to each other, wherein: the air distribution area configures an air inlet path of the energy storage cabinet; the energy storage battery area is used for placing energy storage batteries; the power unit area is used for placing power units; the energy storage battery area and the power unit area are divided into a plurality of layers, and a space is reserved between the energy storage battery and the power unit for air flow to pass through.
Optionally, the energy storage battery is placed at a position close to the air inlet, and the power unit is placed at the air outlet.
Optionally, an exhaust fan is arranged at the air outlet.
Optionally, the system further comprises an air duct structure, and the air duct structure is used for ensuring the uniformity and the tightness of air flow in the energy storage cabinet.
Further, when the air conditioner is not installed in the container, the air duct structure is arranged as follows:
the exhaust fan is arranged at one side of the power unit area close to the wall of the container body, and the corresponding air outlet of the exhaust fan is directly communicated to the outer side of the container body through a closed pipeline; the air inlet is arranged at one side of the air distribution area close to the wall of the container box and is communicated with the outer side of the container box through the filter screen, and cold air outside the container enters the air distribution area through the filter screen.
The periphery of the air distribution area except the air inlet is in a closed state; the upper part of the air distribution area is provided with a baffle or a grid used for adjusting the wind resistance of different parts, wherein: the grid is close to the air inlet, the wind resistance rate is properly increased, and the wind resistance rate is gradually reduced along with the distance from the air inlet, so that air can uniformly enter the energy storage battery area; the energy storage battery area and the power unit area are separated by a filter screen.
Further, if an air conditioner is installed at the top of the container, the air inlet and the air outlet are not directly communicated to the outer side of the container, the air inlet is communicated with the air outlet of the air conditioner, and the air outlet is communicated with the air return opening of the air conditioner. At this time, the air duct structure is one of the following two settings:
-the air inlet is arranged at the top of the energy storage cabinet and is directly communicated with the air outlet of the air conditioner, the air return inlet of the air conditioner is arranged at the top of the container aisle, the air outlet is arranged at the bottom of the energy storage cabinet, which is close to one side of the aisle, and the fan is arranged at the air outlet, so that the air outlet can be communicated with the air return inlet of the air conditioner through the container aisle space, and the hot air exhausted from the air outlet at the bottom of the energy storage cabinet is exhausted from bottom to top to the air return inlet of the air conditioner through the container aisle;
the air outlet of the air conditioner is arranged at the top of the container aisle, the air inlet is arranged at the bottom of the energy storage cabinet close to one side of the aisle, and the air outlet of the air conditioner is communicated with the air inlet through the container aisle space; the air outlet is arranged at the top of the energy storage cabinet, the exhaust fan is arranged and is directly communicated with an air return inlet of the air conditioner, and then air-conditioning cold air can be deposited from top to bottom along the passageway and enters the energy storage cabinet from the air inlet at the bottom of the energy storage cabinet and is discharged from the air outlet at the top of the energy storage cabinet.
Optionally, the energy storage battery area is provided with a battery inserting box for placing the energy storage battery, the battery inserting box is formed by sequentially connecting copper bars in series to form a battery cluster, and the battery cluster and the power unit in the energy storage cabinet are connected by the copper bars.
After the technical scheme is adopted, the embodiment of the utility model has at least one of the following beneficial effects:
the container battery energy storage system integrates the energy storage battery and the power unit in the same energy storage cabinet, and the whole structure of the container battery energy storage system is composed of the air inlet, the air distribution area, the grid, the energy storage battery area, the power unit area and the exhaust fan in sequence.
According to the container battery energy storage system provided by the utility model, when the air conditioner is not additionally arranged on the container, the air inlet and the air outlet of the energy storage cabinet are communicated with the outer side of the container body of the container, cold air outside the container body is directly utilized, and heat is directly discharged to the outer side of the container body. This is equivalent to eliminating the heat management system at the level of the container, which improves the heat dissipation efficiency and reduces the cost of the heat management system.
When the air conditioner is additionally arranged at the top of the container, the system does not change the essence content of the unified management of the battery unit and the power unit, and does not change the basic structure of the energy storage cabinet.
In summary, the container battery energy storage system provided by the utility model integrates the battery cluster and the corresponding power device in one energy storage cabinet, and then performs unified planning on the thermal management of the battery cluster and the corresponding power device, so that the wiring length between the energy storage battery and the power unit of the high-voltage cascade battery energy storage system can be reduced, the cost and the installation workload are reduced, the installation and the transportation are facilitated, and the integration level and the thermal management efficiency of the container energy storage system are improved.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a battery energy storage system of a modular container suitable for high-voltage and high-capacity in an embodiment of the utility model;
fig. 2 is a schematic diagram of an energy storage system for unified management of energy storage batteries and power units according to an embodiment of the present invention;
in the figure, the air distribution area 1, the energy storage battery area 2, the power unit area 3, the air inlet 4, the grille 5, one side 6 close to the wall of the container box, the filter screen 7, the exhaust duct 8, the exhaust fan 9, the power unit 10 and the battery cluster 11.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a battery energy storage system of a modular container suitable for high-voltage and high-capacity in an embodiment of the utility model.
Referring to fig. 1, the modularization container battery energy storage system suitable for high pressure large capacity in this embodiment includes one or more energy storage cabinets, and the energy storage cabinet is located the container, and every energy storage cabinet is equipped with air intake 4 and air outlet, and each energy storage cabinet is inside to divide into three regions from air intake 4 to air outlet, does in proper order: air distribution area 1, energy storage battery district 2, power unit district 3, are separated by grid 5 or filter screen 7 between the three region, and air distribution area 1 directly links to each other with air intake 4, wherein: the air distribution area 1 is used for configuring an air inlet path of the energy storage cabinet; the energy storage battery area 2 is used for placing energy storage batteries; the power unit area 3 is used for placing the power unit 10; the energy storage battery area 2 and the power unit area 3 are divided into a plurality of layers by overhead supports, and a space is reserved between the energy storage battery and the power unit 10 for air flow to pass through.
According to the system, the energy storage cabinet is internally provided with a hierarchical structure consisting of three areas, namely the air distribution area 1, the energy storage battery area 2 and the power unit area 3, each area is divided by the grating 5 or the filter screen 7, so that the energy storage battery and the corresponding converter power unit 10 can be subjected to unified thermal management, the integration level and the thermal management efficiency of the whole energy storage system are improved, meanwhile, the length of a lead between the energy storage battery and the power unit 10 is reduced, and the installation and the transportation are facilitated. As shown in fig. 2.
On the basis of the embodiment, in order to better realize heat management, the air inlet path, the air outlet path and the air channel of the battery energy storage system of the modular container can be reasonably designed.
Specifically, based on the adaptive range and the temperature sensitivity of the energy storage battery and the energy storage converter to the temperature, the thermal management priority of the battery is higher than that of the converter power unit. In a preferred embodiment, the energy storage battery is placed close to the air inlet 4 to increase the heat dissipation efficiency; the power unit 10 is placed at the air outlet position to prevent the battery from being heated due to the heat generated by the power unit. Thus, from the air inlet 4 to the air outlet, the three areas are arranged in the following order: the wind distribution area 1, the energy storage battery area 2 and the power unit area 3.
In another preferred embodiment, the air duct structure of the energy storage cabinet is constructed, and the air duct structure is used for ensuring the uniformity and the tightness of air flow in the energy storage cabinet. The uniformity requires that air flows through each module (energy storage battery area 2, energy storage battery in power unit area 3, power unit 10) more uniformly, an exhaust fan 9 is arranged at the air outlet, and the tightness requires that no other air dissipation openings are arranged except the air outlet corresponding to the exhaust fan 9 to fully utilize cold air at the air inlet 4.
Based on the requirements of uniformity and tightness, in a preferred embodiment, when the air conditioner is not installed in the container, the air duct structure can be adopted as follows: the exhaust fan 9 is provided with a power module area close to one side 6 of the container wall, and a corresponding air outlet of the exhaust fan is directly communicated to the outer side of the container body through a closed pipeline; the air inlet 4 is arranged at one side 6, close to the wall of the container, of the air distribution area 1 and is communicated with the outer side of the container body through a filter screen 7, and cold air outside the container enters the air distribution area 1 through the filter screen 7. Furthermore, the periphery of the air distribution area 1 except the air inlet 4 is in a closed state; the upper part of the air distribution area 1 is provided with a baffle or a grid 5 structure, so that the wind resistance of different parts can be adjusted, and the uniformity of air flow is improved. For example, the air resistance of the grille is appropriately adjusted to be larger near the air inlet 4 and gradually decreased as the grille moves away from the air inlet 4, so that the air can more uniformly enter the energy storage battery region 2. The energy storage cell region 2 and the power cell region 3 may be considered to be separated by a screen 7, and the screen 7 does not have to have a function of adjusting wind resistance.
Based on the requirements of uniformity and tightness, in another preferred embodiment, if the air conditioner is additionally arranged on the top of the container, the air inlet 4 and the air outlet of the energy storage cabinet are not directly communicated to the outer side of the container, the air inlet 4 of the energy storage cabinet is communicated with the air outlet of the air conditioner, and the air outlet of the energy storage cabinet is communicated with the air return opening of the air conditioner. The air duct structure can adopt the following arrangement: the air inlet 4 of the energy storage cabinet is arranged at the top of the energy storage cabinet and is directly communicated with the air outlet of the air conditioner; the air-conditioning return air inlet is arranged at the top of the container passageway, the air outlet of the energy storage cabinet is arranged at the bottom of the energy storage cabinet close to one side of the passageway, and a fan can be additionally arranged at the air outlet of the energy storage cabinet, so that the air outlet of the energy storage cabinet is communicated with the air-conditioning return air inlet through the container passageway space; therefore, the hot air exhausted from the outlet at the bottom of the energy storage cabinet can be exhausted from bottom to top to the air return inlet of the air conditioner through the container passageway. Of course, in another embodiment, the following arrangement may also be employed: the air outlet of the air conditioner is arranged at the top of the container passageway, and the air inlet 4 of the energy storage cabinet is arranged at the bottom of the energy storage cabinet close to one side of the passageway, so that the air outlet of the air conditioner is communicated with the air inlet 4 of the energy storage cabinet through the container passageway space; the air outlet of the energy storage cabinet is arranged at the top of the energy storage cabinet, and an exhaust fan 9 is arranged and directly communicated with the air return inlet of the air conditioner. Therefore, air-conditioning cold air can be deposited from top to bottom along the passageway, enters the energy storage cabinet from the air inlet 4 at the bottom of the energy storage cabinet and is discharged from the air outlet at the top of the energy storage cabinet.
In the above embodiment, no matter how the air inlet 4 and the air return of the air conditioner are arranged, and the air inlet 4 and the air outlet of the energy storage cabinet are arranged, the essential content of the unified management of the battery unit and the power unit of the utility model is not changed, and the basic structure of the energy storage cabinet is not changed, that is, the internal area of the energy storage cabinet is divided into: the wind distribution area 1, the energy storage battery area 2 and the power unit area 3. The energy storage battery area 2 is close to the energy storage cabinet air inlet 4, and the power unit area 3 is close to the energy storage cabinet air outlet.
In order to better explain the technical scheme, a specific application test is provided below, specifically, a 6MW container type battery energy storage system without an air conditioner. The system in the application test comprises three containers, wherein each container is a phase and is internally provided with 16 energy storage cabinets. Each energy storage cabinet is provided with 6 battery plug boxes and a power unit 10. The battery box rated voltage was 115.2V, with dimensions 610mm 600mm 245 mm. The energy storage cabinet is 1400mm 800mm 2260mm, and the structure of the energy storage cabinet is shown in figure 1 and is divided into three parts in height: 0-300 mm is a wind distribution area; 300-1750 mm is an energy storage battery area, three layers of overhead supports are arranged, and two battery plug boxes are placed on each layer; 1750-2260 mm are power unit areas, a layer of overhead support is arranged, and a power unit with the size of 800mm x 600mm x 250mm is placed. The air distribution area and the energy storage battery area are separated by a layer of adjustable grating, and the energy storage battery area and the power unit area are separated by a layer of filter screen. The air inlet is arranged at one side of the air distribution area close to the wall of the container, the exhaust fan is arranged at one side of the power unit area close to the wall of the container, the air inlet is communicated with the outer side of the container through a filter screen, and the air outlet is communicated with the outside of the container through an exhaust pipeline.
The 6 battery plug boxes are sequentially connected in series by copper bars to form a battery cluster 11, and the battery cluster 11 is also connected with the power unit by the copper bars. The battery cluster 11 and the power unit 10 can be directly connected by a copper bar in the energy storage cabinet, so that the advantages of the battery energy storage system in the aspects of reducing wiring cost, improving integration level, facilitating installation and transportation and the like are embodied. The system can replace 16 x 3 x 2 x 96 kV connection wires by copper bars, and the system has the advantage of being considerable.
According to the container battery energy storage system provided by the embodiment of the utility model, the energy storage battery and the power unit are integrated in the same energy storage cabinet, so that the wiring length between the energy storage battery and the power unit of the high-voltage cascade battery energy storage system is reduced, the cost and the installation workload are reduced, the installation and the transportation are facilitated, the integration level and the thermal management efficiency of the container energy storage system are improved, and the container battery energy storage system has strong practicability.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (10)
1. The utility model provides a modularization container battery energy storage system suitable for high-pressure large capacity, includes at least one energy storage cabinet, the energy storage cabinet is located the container, every the energy storage cabinet is equipped with air intake and air outlet, its characterized in that:
every energy storage cabinet is inside from the air intake to the air outlet divides into three region, does in proper order: air distribution area, energy storage battery district, power unit district, are separated by grid or filter screen between the three region, air distribution area directly with the air intake links to each other, wherein: the air distribution area configures an air inlet path of the energy storage cabinet; the energy storage battery area is used for placing energy storage batteries; the power unit area is used for placing power units; the energy storage battery area and the power unit area are divided into a plurality of layers, and a space is reserved between the energy storage battery and the power unit for air flow to pass through.
2. The battery energy storage system for the high-voltage large-capacity modular container as claimed in claim 1, wherein the energy storage battery is placed close to the air inlet, and the power unit is placed at the air outlet.
3. The battery energy storage system for the high-voltage large-capacity modular container as claimed in claim 1, wherein an exhaust fan is provided at the air outlet.
4. The battery energy storage system for the high-voltage large-capacity modular container as claimed in claim 3, further comprising an air duct structure for ensuring uniformity and tightness of air flow in the energy storage cabinet.
5. The battery energy storage system for a high-voltage large-capacity modular container as claimed in claim 4, wherein when the air conditioner is not installed in the container, the air duct structure is configured as follows:
the exhaust fan is arranged at one side of the power unit area close to the wall of the container body, and the corresponding air outlet of the exhaust fan is directly communicated to the outer side of the container body through a closed pipeline; the air inlet is arranged at one side of the air distribution area close to the wall of the container box and is communicated with the outer side of the container box through the filter screen, and cold air outside the container enters the air distribution area through the filter screen.
6. The battery energy storage system for the high-voltage large-capacity modular container as claimed in claim 5, wherein the periphery of the air distribution area except the air inlet is in a closed state; the upper part of the air distribution area is provided with a baffle or a grid used for adjusting the wind resistance of different parts, wherein:
the grid is close to the air inlet, the wind resistance rate is properly increased, and the wind resistance rate is gradually reduced along with the distance from the air inlet, so that air can uniformly enter the energy storage battery area;
the energy storage battery area and the power unit area are separated by a filter screen.
7. The battery energy storage system for the modular container with high pressure and large capacity as claimed in claim 1, wherein if an air conditioner is installed on the top of the container, the air inlet and the air outlet are not directly communicated to the outside of the container, the air inlet is communicated with the air outlet of the air conditioner, and the air outlet is communicated with the air return port of the air conditioner.
8. The battery energy storage system for the high-voltage large-capacity modular container as claimed in claim 7, further comprising an air duct structure for ensuring uniformity and tightness of air flow in the energy storage cabinet.
9. The modular container battery energy storage system for high-voltage high capacity according to claim 8, wherein the air duct structure is one of the following two arrangements:
-the air inlet is arranged at the top of the energy storage cabinet and is directly communicated with the air outlet of the air conditioner, the air return inlet of the air conditioner is arranged at the top of the container aisle, the air outlet is arranged at the bottom of the energy storage cabinet, which is close to one side of the aisle, and the fan is arranged at the air outlet, so that the air outlet can be communicated with the air return inlet of the air conditioner through the container aisle space, and the hot air exhausted from the air outlet at the bottom of the energy storage cabinet is exhausted from bottom to top to the air return inlet of the air conditioner through the container aisle;
the air outlet of the air conditioner is arranged at the top of the container aisle, the air inlet is arranged at the bottom of the energy storage cabinet close to one side of the aisle, and the air outlet of the air conditioner is communicated with the air inlet through the container aisle space; the air outlet is arranged at the top of the energy storage cabinet, the exhaust fan is arranged and is directly communicated with an air return inlet of the air conditioner, and then air-conditioning cold air can be deposited from top to bottom along the passageway and enters the energy storage cabinet from the air inlet at the bottom of the energy storage cabinet and is discharged from the air outlet at the top of the energy storage cabinet.
10. The battery energy storage system for the high-voltage large-capacity modular container as claimed in any one of claims 1 to 9, wherein the energy storage battery area is provided with battery plug boxes for placing the energy storage batteries, the battery plug boxes are sequentially connected in series by copper bars to form a battery cluster, and the battery cluster and the power unit in the same energy storage cabinet are connected by the copper bars.
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| CN202121964022.1U CN215644654U (en) | 2021-08-20 | 2021-08-20 | Modularized container battery energy storage system suitable for high voltage and large capacity |
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| CN202121964022.1U CN215644654U (en) | 2021-08-20 | 2021-08-20 | Modularized container battery energy storage system suitable for high voltage and large capacity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117497914A (en) * | 2023-11-09 | 2024-02-02 | 天津大学 | Battery cluster refined thermal management device and control method thereof |
| CN117497914B (en) * | 2023-11-09 | 2024-06-28 | 天津大学 | Battery cluster refined thermal management device and control method thereof |
-
2021
- 2021-08-20 CN CN202121964022.1U patent/CN215644654U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117497914A (en) * | 2023-11-09 | 2024-02-02 | 天津大学 | Battery cluster refined thermal management device and control method thereof |
| CN117497914B (en) * | 2023-11-09 | 2024-06-28 | 天津大学 | Battery cluster refined thermal management device and control method thereof |
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