Containerized energy storage system

Abstract

The utility model discloses a container type energy storage system, wherein, container type energy storage system includes first box body, second box body, a plurality of battery box and electric control device, and first box body has battery cavity, and second box body has electric control cavity, and second box body is overlapped with first box body and sets up, and second box body is located below first box body, and a plurality of battery box all are located in battery cavity, and electric control device includes high pressure box and energy storage converter, and high pressure box and energy storage converter all are located in electric control cavity, and energy storage converter is connected with high pressure box, and high pressure box is connected with battery box. The utility model technical scheme's container type energy storage system can reduce the space occupied.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, and in particular to a containerized energy storage system. Background Technology

[0002] With the continuous development of energy storage technology, energy storage systems are being used more and more widely, with rack-mounted energy storage systems being the most common. Existing energy storage systems often have battery compartments or control compartments arranged side-by-side, with battery packs, BMS systems, PCS energy storage converters, EMS systems, and water chillers arranged separately. This results in low overall product space utilization and a large footprint. Utility Model Content

[0003] The main purpose of this invention is to propose a containerized energy storage system that aims to reduce the area occupied by the energy storage system.

[0004] To achieve the above objectives, the containerized energy storage system proposed in this utility model includes:

[0005] The first housing has a battery compartment;

[0006] The second housing has an electrical control cavity. The second housing is stacked on top of the first housing, and the second housing is located below the first housing.

[0007] Multiple battery boxes are all located within the battery cavity; and

[0008] The electrical control device includes a high-voltage box and an energy storage converter. Both the high-voltage box and the energy storage converter are located in the electrical control cavity. The energy storage converter is connected to the high-voltage box, and the high-voltage box is connected to the battery box.

[0009] Optionally, the containerized energy storage system further includes a connector, one end of which is located in the electrical control cavity and connected to the high-voltage box, and the other end of which is located in the battery cavity and connected to the battery box.

[0010] Optionally, the electronically controlled cavity is horizontally divided into two first mounting cavities and a second mounting cavity located between the two first mounting cavities;

[0011] The electrical control device also includes a distribution box and an electrical control module. The high-voltage box and the energy storage converter are both located in the second mounting cavity, and the distribution box and the electrical control module are each located in one of the first mounting cavities.

[0012] Optionally, multiple battery boxes and battery cavities form multiple battery clusters. The electronic control device includes at least multiple high-voltage boxes and multiple energy storage converters. The multiple high-voltage boxes and multiple energy storage converters are all located in the second mounting cavity. Two battery clusters are connected to one high-voltage box, and each high-voltage box is connected to two energy storage converters.

[0013] Optionally, the second mounting cavity forms a first opening on both opposite sides of the second housing, the energy storage converter is provided with one of the first openings, the high voltage box is provided with the other first opening, and each first opening is provided with a first cabinet door.

[0014] Optionally, the second mounting cavity is provided with an air inlet, and the first mounting cavity is provided with a vent and an air outlet. The vent connects the second mounting cavity and the first mounting cavity. The containerized energy storage system also includes a fan. The fan is located between the vent and the air outlet. The fan is used to drive external airflow from the air inlet into the second mounting cavity and then out through the vent and the air outlet.

[0015] Optionally, the air inlets are provided on both sides of the second mounting cavity along its length.

[0016] Optionally, the containerized energy storage system further includes a liquid cooling system, which includes a liquid chiller and liquid cooling pipelines. The liquid chiller is installed inside the battery chamber and connected to the liquid cooling components of the battery box through the liquid cooling pipelines.

[0017] Optionally, the battery cavity forms a second opening on the surface of the first housing, and a second cabinet door is provided at the second opening. The liquid cooler is installed on the side of the second cabinet door facing the battery cavity.

[0018] Optionally, the second container also has a fire-fighting chamber, which is separated from the electrical control chamber. The fire-fighting chamber forms a fire-fighting opening on the surface of the second container. The fire-fighting opening is located in a fire cabinet door. The containerized energy storage system also includes a fire extinguishing system, which is located in the fire-fighting chamber.

[0019] This utility model's technical solution improves space utilization within the battery compartment by centrally housing multiple battery boxes in a first enclosure, allowing for a more compact arrangement of the battery boxes and reducing the space occupied by the first enclosure. Similarly, centralizing the electrical control devices in a second enclosure further improves space utilization within the electrical control compartment, enabling a more compact arrangement of the high-voltage box and energy storage converter, thus reducing the space occupied by the second enclosure. By stacking the second and first enclosures, with the second enclosure positioned below the first enclosure, this vertical stacking design reduces the area occupied by the energy storage system.

[0020] Furthermore, the first enclosure is located on the upper level, which prevents the battery box from being affected by ground moisture and dust, thus reducing its lifespan. In addition, the second enclosure is located on the lower level, which facilitates the maintenance of the electronic control devices inside the electronic control chamber by the staff. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the containerized energy storage system of this utility model;

[0023] Figure 2 for Figure 1 Front view of the first box in the middle;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the second box.

[0025] Explanation of icon numbers:

[0026] 10. First cabinet; 11. Second cabinet door; 20. Second cabinet; 21. Electrical control cavity; 211. First mounting cavity; 212. Second mounting cavity; 23. First cabinet door; 231. Louver; 24. First opening; 25. Fire cabinet door; 26. Fire compartment; 27. Fire opening; 30. Electrical control device; 31. High-voltage box; 32. Energy storage converter; 33. Distribution box; 34. Electrical control module; 40. Fan; 50. Partition plate; 60. Fire extinguishing system; 70. Fire hose reel

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This utility model proposes a containerized energy storage system.

[0032] In the embodiments of this utility model, such as Figures 1 to 3 As shown, the containerized energy storage system includes a first container 10, a second container 20, multiple battery boxes, and an electronic control device 30.

[0033] In this embodiment, the first housing 10 has a battery cavity, and multiple battery boxes are disposed in the battery cavity. The multiple battery boxes are connected in series in the electronic control cavity 21 to form a battery cluster. That is, the battery cavity is used to centrally house the battery boxes, which can improve the space utilization rate in the battery cavity and make the arrangement of the battery boxes more compact, thereby reducing the space occupied by the first housing 10.

[0034] In this embodiment, the second enclosure 20 has an electrical control cavity 21. The electrical control device 30 includes a high-voltage box 31 and an energy storage converter 32. Both the high-voltage box 31 and the energy storage converter 32 are located in the electrical control cavity 21. The energy storage converter 32 is connected to the high-voltage box 31, and the high-voltage box 31 is connected to the battery box. The electrical control cavity 21 is used to centrally house the electrical control device 30, which can improve the space utilization rate in the electrical control cavity 21 and make the arrangement of the high-voltage box 31 and the energy storage converter 32 more compact, thereby reducing the space occupied by the second enclosure 20.

[0035] Furthermore, the second container 20 is stacked on top of the first container 10, with the second container 20 located below the first container 10. This vertical stacking design reduces the footprint of the containerized energy storage system. Moreover, the first container 10 being on top prevents the battery pack from being affected by ground moisture and dust, thus reducing its lifespan. Additionally, the lower position of the second container 20 facilitates maintenance of the electrical control device 30 within the electrical control chamber 21.

[0036] This utility model's technical solution improves space utilization within the battery compartment by centrally installing multiple battery boxes in a first enclosure 10, resulting in a more compact arrangement of the battery boxes and reducing the space occupied by the first enclosure 10. Similarly, centralizing the electrical control device 30 in a second enclosure 20 improves space utilization within the electrical control compartment 21, allowing for a more compact arrangement of the high-voltage box 31 and the energy storage converter 32, further reducing the space occupied by the second enclosure 20. By stacking the second enclosure 20 and the first enclosure 10, with the second enclosure 20 located below the first enclosure 10, this vertical stacking design reduces the footprint of the containerized energy storage system.

[0037] Furthermore, the first enclosure 10 is located on the upper level, which can prevent the battery box from being affected by ground moisture and dust, thus reducing its lifespan. In addition, the second enclosure 20 is located on the lower level, which also facilitates the maintenance of the electronic control device 30 inside the electronic control cavity 21 by the staff.

[0038] In some embodiments, the containerized energy storage system further includes a connector, one end of which is located in the electrical control cavity 21 and connected to the high voltage box 31, and the other end of which is located in the battery cavity and connected to the battery box.

[0039] Specifically, the connector acts as an electrical bridge between the battery compartment and the electrical control compartment 21, enabling energy transmission and signal interaction between the battery box and the high-voltage box 31. It can replace traditional distributed cable wiring, reducing the clutter of cables within the compartment and minimizing the space occupied by the bending radius of cross-compartment cables, thus improving the compactness of the internal layout. This effectively reduces cable loss and lowers costs. Furthermore, when replacing or expanding the battery box, only the connector interface needs to be operated, eliminating the need for rewiring, making it convenient and quick.

[0040] In some embodiments, the electrical control cavity 21 is horizontally divided into two first mounting cavities 21 and a second mounting cavity 22 located between the two first mounting cavities 21; the electrical control device 30 also includes a distribution box 33 and an electrical control module 34, the high voltage box 31 and the energy storage converter 32 are both located in the second mounting cavity 22, and the distribution box 33 and the electrical control module 34 are respectively located in one of the first mounting cavities 21.

[0041] Specifically, the high-voltage box 31 and the energy storage converter 32 are arranged together in the second mounting cavity 22, which shortens the connection distance, reduces line loss, and helps to reduce production costs. This separate cavity installation avoids electromagnetic interference and prevents the heat generated by the energy storage converter 32 from affecting the stability of the distribution box 33 and the electrical control module 34. It also facilitates targeted maintenance by subsequent staff.

[0042] In some embodiments, multiple battery boxes and battery cavities form multiple battery clusters. The electronic control device 30 includes at least multiple high-voltage boxes 31 and multiple energy storage converters 32. The multiple high-voltage boxes 31 and multiple energy storage converters 32 are all located in the second mounting cavity 22. Two battery clusters are connected to one high-voltage box 31, and each high-voltage box 31 is connected to two energy storage converters 32.

[0043] Specifically, at least four battery clusters are formed within the battery chamber. The electronic control device 30 includes at least two high-voltage boxes 31 and four energy storage converters 32. Two battery clusters are connected to one high-voltage box 31, and one high-voltage box 31 is connected to two of the energy storage converters 32. Two battery clusters are connected to another high-voltage box 31, and the other high-voltage box 31 is connected to the other two energy storage converters 32. By independently connecting two battery clusters to one high-voltage box 31 and connecting each high-voltage box 31 to two energy storage converters 32, the voltage and current of the corresponding two battery clusters can be monitored through a single high-voltage box 31. Moreover, when replacing or repairing a battery cluster, only the corresponding high-voltage box 31 needs to be disconnected without affecting the operation of the other high-voltage box 31. At the same time, it can achieve one-cluster-one-management, avoiding the generation of circulating current between battery clusters.

[0044] For example, the number of battery clusters formed in the battery cavity can be four, six, eight, etc., and the corresponding number of high voltage boxes 31 can be two, three, four, etc., while the number of energy storage converters 32 can be four, six, eight.

[0045] Furthermore, the containerized energy storage system includes two first containers 10, which are stacked on top of a second container 20 and arranged horizontally. Each first container 10 has a battery cavity, and multiple battery clusters are formed within each battery cavity. Specifically, each battery cluster is connected to a high-voltage box 31. One high-voltage box 31 is connected to two energy storage converters 32, and the other high-voltage box 31 is connected to two other energy storage converters 32. In this way, if one first container 10 fails, the operation of the other first container 10 will not be affected; or, in other words, if one first container 10 is under maintenance, the operation of the other first container 10 will not be affected.

[0046] In some embodiments, the second mounting cavity 22 forms a first opening 24 on both sides opposite to the second housing 20, and a first cabinet door 23 is provided at each first opening 24. Multiple energy storage converters 32 are disposed in two first openings 24, and multiple high-voltage boxes 31 are disposed between multiple energy storage converters 32.

[0047] Specifically, each first opening 24 is equipped with an independent first cabinet door 23, forming a two-way operating channel. The energy storage converter 32, as a high-heat-generating device, is located near the first opening 24 for direct heat dissipation through the first cabinet door 23. During maintenance, two workers can simultaneously inspect the energy storage converter 32 and the high-voltage box 31 from both sides, shortening downtime. Furthermore, in other embodiments, the second mounting cavity 22 forms the first opening 24 only on one side of the second housing 20.

[0048] In some embodiments, the second mounting cavity 22 is provided with an air inlet, and the first mounting cavity 21 is provided with a vent and an air outlet. The vent connects the second mounting cavity 22 and the first mounting cavity 21. The containerized energy storage system also includes a fan 40, which is located between the vent and the air outlet. The fan 40 is used to drive external airflow into the second mounting cavity 22 from the air inlet and then out through the vent and the air outlet.

[0049] Specifically, external airflow can flow into the second mounting cavity 22 from the air inlet. After the external airflow flowing into the second mounting cavity 22 undergoes heat exchange with the high-voltage box 31 and the energy storage converter 32, it becomes hot air. The fan 40 draws the hot air in the second mounting cavity 22 through the ventilation port and discharges it outside the second housing 20 through the air outlet. This arrangement helps to improve the heat dissipation efficiency of the high-voltage box 31 and the energy storage converter 32.

[0050] Furthermore, one of the first mounting cavities 21 is provided with two partition plates 50, which are arranged at intervals, dividing the first mounting cavity 21 into three chambers. The distribution box 33, the fan 40, and the electrical control module 34 are respectively installed in one chamber. The middle chamber is provided with a vent and an air outlet, and the fan 40 is located in the middle chamber. Specifically, the electrical control device 30 includes two electrical control modules 34, one of which is located in the chamber formed by the division of the first mounting cavity 21, and the other is located in another first mounting cavity 21. This arrangement can prevent the hot air drawn by the fan 40 from the second mounting cavity 22 from coming into contact with the distribution box 33 and the electrical control module 34, thus affecting the stability of the distribution box 33 and the electrical control module 34.

[0051] In some embodiments, air inlets are provided on both sides of the second mounting cavity 22 along its length. Specifically, external airflow can enter simultaneously from both air inlets, covering the entire second mounting cavity 22. Compared to a single-sided air inlet structure, dual-sided air inlet reduces the airflow path length, lowers the load on the fan 40, and improves energy efficiency. Simultaneously, providing air inlets on both sides improves heat dissipation efficiency. Furthermore, in other embodiments, the second mounting cavity 22 has an air inlet on only one side.

[0052] Furthermore, the air inlet is located on the second cabinet door 11. Specifically, the second cabinet door 11 is provided with louvers 231, which form an air inlet. By placing the air inlet on the second cabinet door 11, compared with the structural solution of opening the air inlet separately, the air inlet is integrated into the second cabinet door 11, eliminating the need for additional openings and improving the strength of the second cabinet 20.

[0053] In some embodiments, the containerized energy storage system further includes a liquid cooling system, which includes a liquid chiller and liquid cooling pipelines. The liquid chiller is installed inside the battery chamber and is connected to the liquid cooling components of the battery box via the liquid cooling pipelines.

[0054] Specifically, the liquid cooling system also includes a liquid delivery pipe and a liquid return pipe. One end of the liquid delivery pipe is connected to the liquid outlet of the liquid chiller. Multiple liquid delivery branches are provided on the liquid cooling pipeline, and each liquid delivery branch is connected to the inlet end of the liquid cooling component of a battery box. One end of the liquid return pipe is connected to the liquid return port of the liquid chiller. Multiple liquid return branches are provided on the liquid return pipe, and each liquid return branch is connected to the outlet end of the liquid cooling component of a battery box.

[0055] Installing the liquid cooler within the battery compartment allows for a closer proximity between the cooler and the battery box, shortening the piping length between them. This reduces coolant loss during flow and improves heat dissipation. Furthermore, placing the cooler within the battery compartment keeps the electronic control unit 30 away from coolant leakage paths, effectively reducing the risk of short circuits.

[0056] In some embodiments, the battery cavity forms a second opening on the surface of the first housing 10, and a second cabinet door 11 is provided at the second opening. The liquid cooler is installed on the side of the second cabinet door 11 facing the battery cavity.

[0057] Specifically, the second cabinet door 11 is hinged to the second opening, used to open and close the second opening. Opening the second opening through the second cabinet door 11 allows direct maintenance of the liquid cooler, avoiding the need to remove the battery box as in traditional designs, making it convenient and quick. Furthermore, installing the liquid cooler inside the second cabinet door 11 avoids occupying internal battery compartment space, allowing for a more compact battery box layout. The liquid supply and return pipes are corrugated flexible hoses with sufficient length to ensure the second cabinet door 11 can be opened normally.

[0058] In some embodiments, the second housing 20 further includes a fire-fighting chamber 26, which is separated from the electrical control chamber 21. The fire-fighting chamber 26 forms a fire-fighting opening 27 on the surface of the second housing 20. The fire-fighting opening 27 is located in a fire cabinet door 25. The containerized energy storage system also includes a fire extinguishing system 60, which is located in the fire-fighting chamber 26.

[0059] Specifically, the fire-fighting chamber 26 is formed by separating it from another first installation chamber 21. In the event of a fire, the fire cabinet door 25 can be opened to extinguish the fire through the fire extinguishing system 60, preventing the fire from spreading further. The fire extinguishing system 60 can be a fire extinguisher.

[0060] In some embodiments, the containerized energy storage system further includes a fire hose connection 70 and a fire hose connected to the fire hose connection 70. The fire hose connection 70 is located in the fire chamber 26, and the fire hose is located in the electrical control chamber 21. The fire hose connection 70 is used to connect to an external fire water source.

[0061] Specifically, in the event of a fire, the fire can be extinguished first through the fire extinguishing system 60, and then the water source can be connected through the fire hose connector 70 to spray and cool the electrical control chamber 21 to prevent reignition.

[0062] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A containerized energy storage system, characterized in that, include: The first housing has a battery compartment; The second housing has an electrical control cavity. The second housing is stacked on top of the first housing, and the second housing is located below the first housing. Multiple battery boxes are all located within the battery cavity; as well as The electrical control device includes a high-voltage box and an energy storage converter. Both the high-voltage box and the energy storage converter are located in the electrical control cavity. The energy storage converter is connected to the high-voltage box, and the high-voltage box is connected to the battery box.

2. The containerized energy storage system of claim 1, wherein, The containerized energy storage system also includes a connector, one end of which is located in the electrical control cavity and connected to the high-voltage box, and the other end of which is located in the battery cavity and connected to the battery box.

3. The containerized energy storage system of claim 1, wherein, The electronically controlled cavity is horizontally divided into two first mounting cavities and a second mounting cavity located between the two first mounting cavities; The electrical control device also includes a distribution box and an electrical control module. The high-voltage box and the energy storage converter are both located in the second mounting cavity, and the distribution box and the electrical control module are each located in one of the first mounting cavities.

4. The containerized energy storage system of claim 3, wherein, Multiple battery boxes and battery cavities form multiple battery clusters. The electronic control device includes at least multiple high-voltage boxes and multiple energy storage converters. The multiple high-voltage boxes and multiple energy storage converters are all located in the second mounting cavity. Two battery clusters are connected to one high-voltage box, and each high-voltage box is connected to two energy storage converters.

5. The containerized energy storage system of claim 4, wherein, The second mounting cavity forms a first opening on both sides of the second housing, and each first opening is provided with a first cabinet door. The multiple energy storage converters are respectively arranged in two of the first openings, and the multiple high-voltage boxes are arranged between the multiple energy storage converters.

6. The containerized energy storage system of claim 5, wherein, The second mounting cavity is provided with an air inlet, and the first mounting cavity is provided with a vent and an air outlet. The vent connects the second mounting cavity and the first mounting cavity. The containerized energy storage system also includes a fan. The fan is located between the vent and the air outlet. The fan is used to drive external airflow from the air inlet into the second mounting cavity and then out through the vent and the air outlet.

7. The containerized energy storage system of claim 6, wherein, The air inlets are provided on both sides of the second mounting cavity along its length.

8. The containerized energy storage system as described in claim 7, characterized in that, The containerized energy storage system also includes a liquid cooling system, which includes a liquid chiller and liquid cooling pipelines. The liquid chiller is installed inside the battery chamber and is connected to the liquid cooling components of the battery box through the liquid cooling pipelines.

9. The containerized energy storage system of claim 8, wherein, The battery cavity forms a second opening on the surface of the first housing, and a second cabinet door is provided at the second opening. The liquid cooler is installed on the side of the second cabinet door facing the battery cavity.

10. The container energy storage system of claim 1, wherein, The second container also has a fire-fighting chamber, which is separated from the electrical control chamber. The fire-fighting chamber forms a fire-fighting opening on the surface of the second container. The fire-fighting opening is located in a fire cabinet door. The containerized energy storage system also includes a fire extinguishing system, which is located in the fire-fighting chamber.

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