Container type energy storage device and energy storage system

Abstract

The utility model provides a container type energy storage device and an energy storage system, the container type energy storage device comprises a battery rack assembly, the battery rack assembly is provided with two battery rack units, each battery rack unit is provided with a plurality of energy storage spaces, a first end and a second end, the first end and the second end are oppositely arranged, and the first end is provided with a placing space; the plurality of energy storage spaces are arranged in a direction from one side close to the placing spaces to the second end, one of the two placing spaces in the battery rack assembly is provided with a high-voltage control box, and the other one of the two placing spaces in the battery rack assembly is used for installing an electronic component; and a plurality of battery modules, each battery module is installed in one energy storage space, and the plurality of battery modules are electrically connected with the high-voltage control box. Meanwhile, the utility model further discloses an energy storage system applying the container type energy storage device, and the technical problem that electronic components are difficult to arrange in the energy storage process of an existing container is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and in particular to a container-type energy storage device and an energy storage system. Background Art

[0002] With the rapid development of the energy storage industry, the market is increasingly using standard containers to integrate energy storage systems, creating containerized energy storage battery warehouses. As energy storage capacity increases, especially with the current mainstream 5MWh systems and the newly developed 6MWh and 7MWh systems, the battery warehouse requires more space for equipment layout, which in turn requires a certain amount of space in the electrical warehouse. However, to meet market demand for 0.5P or even higher 1P charging and discharging conditions, the size of the electronic components also increases, making it difficult to fit within the standard 20-foot container. Utility Model Content

[0003] The embodiments of the present invention provide a container-type energy storage device and an energy storage system, which can improve the technical problem that it is difficult to arrange electronic components in the existing container during the process of increasing the energy storage capacity.

[0004] In a first aspect, an embodiment of the present invention provides a container-type energy storage device, comprising:

[0005] A battery rack assembly, the battery rack assembly having two battery rack units, each of the battery rack units having a plurality of energy storage spaces, and a first end and a second end disposed opposite each other, the first end being provided with a placement space, the plurality of energy storage spaces being arranged from a side proximal to the placement space toward the second end, one of the two placement spaces in the battery rack assembly being provided with a high-voltage control box, and the other of the two placement spaces in the battery rack assembly being used to mount electronic components;

[0006] A plurality of battery modules are installed in each of the energy storage spaces, and the plurality of battery modules are electrically connected to the high-voltage control box.

[0007] In one embodiment, the electronic component is a UPS uninterruptible power supply and / or a transformer.

[0008] In one embodiment, it is defined that a plurality of the battery modules on one of the battery rack units are connected to form a first battery cluster, and a plurality of the battery modules on another of the battery rack units are connected to form a second battery cluster;

[0009] The high-voltage control box includes a switch component for regulating voltage and current, and a first connection portion and a second connection portion provided on one side of the switch component. The first connection portion is electrically connected to the first battery cluster, and the second connection portion is electrically connected to the second battery cluster.

[0010] In one embodiment, a height direction H of the battery rack unit is a direction extending from the first end toward the second end, and the first connecting portion and the second connecting portion are arranged along the height direction H and are inclined.

[0011] In one embodiment, the switch assembly includes a first switch element and a second switch element, wherein the first switch element is disposed corresponding to the first battery cluster, and the second switch element is disposed corresponding to the second battery cluster;

[0012] The high-voltage control box further includes a first external connection portion and a second external connection portion. The first external connection portion is disposed on a side of the first switch component, and the second external connection portion is disposed on a side of the second switch component.

[0013] In one embodiment, the high-voltage control box also includes a first indicator light, a second indicator light, a first monitoring unit and a second monitoring unit. The first indicator light and the first monitoring unit are both arranged on the surrounding side of the first switch component, and the second indicator light and the second monitoring unit are both arranged on the surrounding side of the second switch component.

[0014] In one embodiment, the container-type energy storage device also includes a container body, which has a battery compartment and an electrical compartment. The electrical compartment is located on one side of the battery compartment, the battery rack assembly is arranged inside the battery compartment, and the battery rack assembly is fixedly connected to the container body. The electrical compartment is used to install electrical components.

[0015] In one embodiment, the containerized energy storage device further includes a heat dissipation liquid cooler, which is installed in the electrical compartment and located on one side of the electrical components. The heat dissipation liquid cooler is used to regulate the temperature of each battery module.

[0016] In one embodiment, the container-type energy storage device further includes a cooling component, which is located on one side of the heat dissipation liquid cooler and is installed inside the electrical compartment. The cooling component is used to adjust the temperature of the electrical compartment.

[0017] In a second aspect, an embodiment of the present invention provides an energy storage system, comprising the above-mentioned container-type energy storage device.

[0018] Beneficial effects of the embodiments of the present utility model:

[0019] In an embodiment of the present invention, a high-voltage control box regulates the battery modules of two battery rack units, freeing up space in the battery rack assembly for electronic components. This not only prevents electronic components from occupying space in the electrical compartment, but also allows for increased space to accommodate the increased size of electronic components, thereby alleviating the technical issue of electronic component placement in existing containers when increasing energy storage capacity. Furthermore, this avoids the excessive heat generated by the electrical compartment due to the centralized installation of electronic components, thereby reducing the temperature of the electrical compartment and ensuring that it remains within a relatively optimal temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic front view of a container-type energy storage device provided by an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0023] Figure 3 1 is a side view schematic diagram of a container-type energy storage device provided in an embodiment of the present utility model;

[0024] Figure 4 This is a partial assembly diagram of a container-type energy storage device provided by an embodiment of the present utility model;

[0025] Figure 5 It is a structural diagram of a high-voltage control box in an embodiment of the present utility model.

[0026] Icons: 1-battery rack assembly, 10-battery rack unit, 11-energy storage space, 12-placement space, 2-high-voltage control box, 21-first wiring part, 211-first positive input terminal, 212-first negative input terminal, 22-second wiring part, 221-second positive input terminal, 222-second negative input terminal, 23-switch assembly, 231-first switch element, 232-second switch element, 24-first external connection part, 241-first positive output terminal, 242 - First negative output terminal, 25 - Second external connection unit, 251 - Second positive output terminal, 252 - Second negative output terminal, 261 - First indicator light, 262 - Second indicator light, 271 - First monitoring unit, 272 - Second monitoring unit, 3 - Electronic components, 31 - UPS uninterruptible power supply, 32 - Transformer, 4 - Battery module, 51 - First battery cluster, 52 - Second battery cluster, 6 - Container body, 7 - Heat dissipation liquid cooler, 8 - Cooling components. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0028] Please refer to the specific Figure 3 As shown, a containerized energy storage device includes a battery rack assembly 1 and battery modules 4. The battery rack assembly 1 has two opposing battery rack units 10. Each battery rack unit 10 has multiple energy storage spaces 11, and a first end and a second end. The first end is provided with a storage space 12. The multiple energy storage spaces 11 are arranged from the side proximal to the storage space 12 toward the second end. One of the two storage spaces 12 in the battery rack assembly 1 is provided with a high-voltage control box 2, and the other of the two storage spaces 12 in the battery rack assembly 1 is used to install electronic components 3. Each of the multiple battery modules 4 is installed in each energy storage space 11, and the multiple battery modules 4 are electrically connected to the high-voltage control box 2.

[0029] In this case, please combine Figure 1 、 Figure 2 and Figure 4As shown, a high-voltage control box 2 regulates the battery modules 4 on two battery rack units 10, allowing the battery rack assembly 1 to free up a storage space 12 for installing electronic components 3. This not only prevents the electronic components 3 from occupying space in the electrical compartment, but also allows the storage space 12 to accommodate the increased size of the electronic components 3, thereby alleviating the technical problem of the difficulty in arranging electronic components 3 in existing containers during the process of increasing energy storage capacity. Furthermore, this avoids the problem of excessive heat generation in the electrical compartment caused by the centralized installation of electronic components 3, thereby reducing the temperature of the electrical compartment and ensuring that the compartment remains within a relatively optimal temperature range.

[0030] In this embodiment, the battery rack unit 10 includes a battery rack main body and a cantilever support body arranged on the battery rack main body. The cantilever support body is configured in multiple numbers, and the multiple cantilever support bodies are evenly arranged on the battery rack main body from the side close to the first end to the side close to the second end. A placement space 12 is formed between the cantilever support body close to the first end and the two adjacent battery rack main bodies, and multiple energy storage spaces 11 are formed between the multiple cantilever support bodies away from the first end and the two adjacent battery rack main bodies.

[0031] Thus, when the battery module 4 is mounted and fixed in the energy storage space 11, the two sides of the battery module 4 are respectively subjected to forces from the cantilever supports disposed oppositely on the two adjacent battery rack bodies. When multiple battery modules 4 are mounted on the battery rack unit 10, the multiple battery modules 4 are evenly arranged from the side closest to the storage space 12 toward the second end. The battery modules 4 can be neatly and compactly mounted and fixed on the battery rack unit 10, and the multiple battery modules 4 are connected in series and parallel.

[0032] Please combine the specific Figure 1 、 Figure 2 and Figure 3 As shown, multiple battery modules 4 on one battery rack unit 10 are connected to form a first battery cluster 51, and multiple battery modules 4 on another battery rack unit 10 are connected to form a second battery cluster 52. Both the first battery cluster 51 and the second battery cluster 52 are electrically connected to the high-voltage control box 2. That is, the first battery cluster 51 and the second battery cluster 52 are uniformly monitored and controlled by the same high-voltage control box 2. In addition, the two battery rack units 10 will free up a storage space 12 for installing electronic components 3, thereby effectively avoiding the problem of heat concentration caused by the centralized storage of electronic components 3. At the same time, it also avoids the problem that the centralized storage of electronic components 3 is not conducive to troubleshooting and maintenance.

[0033] It should be noted that the electronic component 3 can be a UPS uninterruptible power supply 31 or a transformer 32. Of course, the UPS uninterruptible power supply 31 and the transformer 32 can also be installed together in the energy storage space 11 of the battery rack unit 10, or other electronic components 3 that generate relatively little heat can also be used.

[0034] In some embodiments, please refer to Figure 1 As shown, the containerized energy storage device also includes a container body 6 having a battery compartment and an electrical compartment. The electrical compartment is located on one side of the battery compartment, and a battery rack assembly 1 is disposed within the battery compartment. The number of battery rack assemblies 1 can be one, two, or three. Multiple battery rack assemblies 1 are evenly arranged in the battery compartment along the length of the container body 6. Furthermore, the battery rack assembly 1 is fixedly connected to the container body 6, and the electrical compartment is used to mount electrical components.

[0035] For example, please refer to Figure 1 As shown, there are three battery rack assemblies 1, so the number of battery rack units 10 is correspondingly six. Each battery rack assembly 1 is configured with a corresponding high-voltage control box 2, and each of the three battery rack assemblies 1 is configured with a storage space 12. One of the storage spaces 12 of the three battery rack assemblies 1 can be used to install a UPS 31, and one of the storage spaces 12 of the remaining two battery rack assemblies 1 can be used to install a transformer 32.

[0036] With this arrangement, the UPS 31 and transformer 32 can be independently housed in two separate storage spaces 12. Heat released by the UPS 31 and transformer 32 does not converge, facilitating heat release and dissipation during operation. Furthermore, since the UPS 31 and transformer 32 are separated from the electrical components within the electrical compartment, they are not affected by the large amounts of heat released by the components, ensuring that they maintain optimal performance.

[0037] It is understood that the remaining storage space 12 in the three battery rack assemblies 1 can be used to place other electronic components 3 that generate relatively little heat. The specific electronic components 3 can be selected based on the needs of the assembler or assembly design, and are not specifically limited here. Of course, the electronic components 3 can also be left out, leaving the storage space 12 as a spare.

[0038] It should also be noted that the above-mentioned electrical components may be selected as distribution boxes, or other electrical components in the energy storage container.

[0039] Considering that each battery module 4 will generate and release heat into the battery compartment during charging and discharging, this will increase the temperature in the battery compartment. Based on this problem, the inventor also discloses a solution. Figure 3 As shown, the container-type energy storage device also includes a heat dissipation liquid cooler 7, which is installed in the electrical compartment and located on one side of the electrical components. The heat dissipation liquid cooler 7 is used to adjust the temperature of each battery module 4.

[0040] For example, the heat dissipation liquid cooler 7 includes a heat dissipation fan, a heat dissipation pipeline, a liquid inlet pipeline, and a liquid return pipeline. Each battery module 4 is equipped with a liquid cooling assembly. The heat dissipation pipeline is connected to the liquid inlets of multiple liquid cooling assemblies via the liquid inlet pipeline, and the heat dissipation pipeline is connected to the liquid outlets of multiple liquid cooling assemblies via the liquid return pipeline. The heat dissipation fan is located on one side of the heat dissipation pipeline to drive airflow through the heat dissipation pipeline. In addition, the heat dissipation liquid cooler 7 also includes a power component, which uses the power component to drive the coolant to circulate through the liquid inlet pipeline, liquid cooling assembly, liquid return pipeline, and heat dissipation pipeline.

[0041] In this way, when the coolant flows from the liquid inlet pipe to the liquid cooling assembly, it can quickly absorb the heat from the battery modules 4, reducing the temperature of the battery modules 4 and increasing the temperature of the coolant flowing to the liquid return assembly. When the coolant flows to the heat dissipation pipe, the heat dissipation fan drives the external air flow through the heat dissipation pipe to dissipate the heat of the coolant into the air, lowering the temperature of the coolant. This keeps the coolant temperature lower when it flows to the liquid inlet pipe, and then exchanges heat when it flows through the liquid cooling assembly, achieving the purpose of efficient heat dissipation.

[0042] In other embodiments, the heat dissipation liquid cooler 7 includes a refrigeration device and a power fan provided on one side of the refrigeration device. An air duct is provided in the battery compartment, and a plurality of heat dissipation outlets are provided on the air duct, each of which corresponds to each battery module 4. In this way, the power fan can convert the cold air generated around the refrigeration device into a cold airflow and transport the cold airflow into the air duct. The cold airflow flows along the air duct and is output from each heat dissipation outlet, thereby dissipating the hot air around the battery module 4 and absorbing the heat released by the battery module 4. Furthermore, a plurality of heat exhaust vents are provided on the container body 6, so that the hot air / hot airflow can be discharged from the plurality of heat exhaust vents, thereby achieving the purpose of dissipating heat for each battery module 4, electronic components 3, and battery compartment.

[0043] It should be noted that other methods of configuring the heat dissipation liquid cooler 7 and utilizing the heat dissipation liquid cooler 7 to supply cooling medium or cold air flow to the battery compartment and / or battery module 4 can be used as conventional replacement methods for the above two embodiments.

[0044] In the above description, the electronic components 3 are installed in the storage space 12 of the battery rack unit 10 in the battery compartment, thereby reducing the heat generated and released by the electrical compartment. At the same time, a large amount of space is freed up in the electrical compartment, which is conducive to heat dissipation of the electrical components during use. This helps maintain the optimal performance of the electrical components in the electrical compartment during use.

[0045] However, during long-term use, the heat released by electrical components will accumulate in the electrical compartment, causing the temperature inside the electrical compartment to slowly rise. When the temperature inside the electrical compartment is high, it will also affect the performance of the electrical components.

[0046] In response to the above problems, the inventor has also disclosed a solution. Figure 3 As shown, the container-type energy storage device also includes a cooling component 8, which is arranged on one side of the heat dissipation liquid cooler 7. The cooling component 8 is installed inside the electrical compartment and is used to adjust the temperature of the electrical compartment.

[0047] The cooling component 8 can be an air conditioner, a blower, a semiconductor refrigerator, or any other cooling component 8. The assembler can select the cooling component 8 based on factors such as heat generation, production costs, and design requirements. The cooling component 8 can effectively reduce the overall temperature of the electrical compartment, keeping the electrical components within an optimal operating range.

[0048] In some embodiments, please refer to Figure 1 、 Figure 2 and Figure 5 As shown, the above-mentioned high-voltage control box 2 includes a switch component 23 for regulating voltage and current, and a first wiring part 21 and a second wiring part 22 arranged on one side of the switch component 23. The first wiring part 21 is electrically connected to the first battery cluster 51, and the second wiring part 22 is electrically connected to the second battery cluster 52.

[0049] In this way, the first wiring portion 21 and the second wiring portion 22 are located on the same side of the switch assembly 23, which will facilitate the orderly guidance and arrangement of the wires for electrically connecting the first battery cluster 51 and the second battery cluster 52 to the high-voltage control box 2 on one side of the high-voltage control box 2, making the wiring inside the battery compartment of the container-type energy storage device more neat and orderly, which is conducive to wiring and subsequent maintenance, troubleshooting and line replacement.

[0050] For example, please refer to Figure 4 and Figure 5As shown, the height direction H of the battery rack unit 10 is the direction extending from the first end to the second end, and the first wiring portion 21 and the second wiring portion 22 are arranged along the height direction H and are arranged at an angle. Specifically, the first wiring portion 21 includes a first positive input terminal 211 and a first negative input terminal 212, and the second wiring portion 22 includes a second positive input terminal 221 and a second negative input terminal 222. The first positive input terminal 211, the first negative input terminal 212, the second positive input terminal 221, and the second negative input terminal 222 are arranged along a first direction, which is inclined relative to the height direction H. This further makes the wiring inside the battery compartment of the containerized energy storage device more compact and neat, which is more convenient for wiring during assembly and subsequent maintenance, troubleshooting, and wiring changes.

[0051] For example, please refer to Figure 4 and Figure 5 As shown, the switch assembly 23 includes a first switch 231 and a second switch 232. The first switch 231 is provided in correspondence with the first battery cluster 51, and the second switch 232 is provided in correspondence with the second battery cluster 52. The first and second switches 231, 232 may be rotary switches. The high-voltage control box 2 also includes a first external connection 24 and a second external connection 25. The first external connection 24 is provided on the side of the first switch 231, and the second external connection 25 is provided on the side of the second switch 232.

[0052] For example, the first external connection portion 24 can be located below the first switch 231, and the second external connection portion 25 can be located below the second switch 232. When connecting external wires to the high-voltage control box 2, assemblers can quickly identify the battery cluster corresponding to the switch, improving the convenience and efficiency of wiring and replacement. This also facilitates troubleshooting during maintenance and inspection. Furthermore, assemblers can quickly adjust the current and voltage of the corresponding output by turning the corresponding switch, achieving rapid current and voltage regulation.

[0053] Of course, the first external connection portion 24 can be disposed above or on the left or right sides of the first switch element 231, and the second external connection portion 25 can also be disposed above or on the left or right sides of the second switch element 232. Here, the first external connection portion 24 includes a first positive output terminal 241 and a first negative output terminal 242 disposed opposite each other, and the second external connection portion 25 includes a second positive output terminal 251 and a second negative output terminal 252 disposed opposite each other.

[0054] In some embodiments, please refer to Figure 1 、 Figure 2 and Figure 5As shown, the high-voltage control box 2 further includes a first indicator light 261, a second indicator light 262, a first monitoring unit 271, and a second monitoring unit 272. The first indicator light 261 and the first monitoring unit 271 are both located around the first switch 231, while the second indicator light 262 and the second monitoring unit 272 are both located around the second switch 232. This arrangement allows assemblers to quickly identify the output status of the corresponding external components and the charge and discharge status of the corresponding battery cluster based on the corresponding indicator lights. Furthermore, the corresponding monitoring units can be used to quickly determine the location and cause of any faults, thereby reducing maintenance and improving detection efficiency, thereby achieving convenient monitoring.

[0055] Based on the structure and connection relationship of the above-mentioned container-type energy storage device, the inventor also discloses an energy storage system including the above-mentioned container-type energy storage device.

[0056] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A container-type energy storage device, characterized in that: include: A battery rack assembly (1), wherein the battery rack assembly (1) has two battery rack units (10), each of the battery rack units (10) has a plurality of energy storage spaces (11), and a first end and a second end arranged opposite to each other, the first end is provided with a placement space (12), the plurality of energy storage spaces (11) are arranged from a side close to the placement space (12) toward the second end, one of the two placement spaces (12) in the battery rack assembly (1) is provided with a high-voltage control box (2), and the other of the two placement spaces (12) in the battery rack assembly (1) is used for installing electronic components (3); A plurality of battery modules (4), each of the battery modules (4) is installed in one of the energy storage spaces (11), and the plurality of battery modules (4) are electrically connected to the high-voltage control box (2).

2. The container-type energy storage device according to claim 1, characterized in that: The electronic component (3) is a UPS uninterruptible power supply (31) and / or a transformer (32).

3. The container-type energy storage device according to claim 1, characterized in that: It is defined that a plurality of the battery modules (4) on one of the battery rack units (10) are connected to form a first battery cluster (51), and a plurality of the battery modules (4) on another of the battery rack units (10) are connected to form a second battery cluster (52); The high-voltage control box (2) comprises a switch assembly (23) for regulating voltage and current, and a first connection portion (21) and a second connection portion (22) provided on one side of the switch assembly (23), wherein the first connection portion (21) is electrically connected to the first battery cluster (51), and the second connection portion (22) is electrically connected to the second battery cluster (52).

4. The container-type energy storage device according to claim 3, characterized in that: The height direction H of the battery rack unit (10) is the direction in which the first end extends toward the second end, and the first connecting portion (21) and the second connecting portion (22) are arranged along the height direction H and are inclined.

5. The container-type energy storage device according to claim 3, characterized in that: The switch assembly (23) includes a first switch element (231) and a second switch element (232), wherein the first switch element (231) is arranged corresponding to the first battery cluster (51), and the second switch element (232) is arranged corresponding to the second battery cluster (52); The high-voltage control box (2) further comprises a first external connection portion (24) and a second external connection portion (25), wherein the first external connection portion (24) is arranged on a side of the first switch component (231), and the second external connection portion (25) is arranged on a side of the second switch component (232).

6. The container-type energy storage device according to claim 5, characterized in that: The high-voltage control box (2) further comprises a first indicator light (261), a second indicator light (262), a first monitoring unit (271) and a second monitoring unit (272); the first indicator light (261) and the first monitoring unit (271) are both arranged on the peripheral side of the first switch element (231); and the second indicator light (262) and the second monitoring unit (272) are both arranged on the peripheral side of the second switch element (232).

7. The container-type energy storage device according to any one of claims 1 to 6, characterized in that: The invention also includes a container body (6), wherein the container body (6) has a battery compartment and an electrical compartment, wherein the electrical compartment is located on one side of the battery compartment, the battery rack assembly (1) is arranged inside the battery compartment, and the battery rack assembly (1) is fixedly connected to the container body (6), and the electrical compartment is used for installing electrical components.

8. The container-type energy storage device according to claim 7, characterized in that: It also includes a heat dissipation liquid cooler (7), which is installed in the electrical compartment and located on one side of the electrical components. The heat dissipation liquid cooler (7) is used to adjust the temperature of each battery module (4).

9. The container-type energy storage device according to claim 8, characterized in that: It also includes a cooling component (8), which is located on one side of the heat dissipation liquid cooler (7). The cooling component (8) is installed inside the electrical compartment, and the cooling component (8) is used to adjust the temperature of the electrical compartment.

10. An energy storage system, characterized in that: It comprises the container-type energy storage device according to any one of claims 1 to 9.

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