Liquid cooling energy storage outdoor cabinet and liquid cooling energy storage system

Abstract

The utility model discloses a liquid cooling energy storage outdoor cabinet and a liquid cooling energy storage system. The liquid cooling energy storage outdoor cabinet comprises a cabinet body, a plurality of battery clusters, a liquid cooling unit and a liquid cooling pipeline, wherein the cabinet body is provided with a battery bin and an equipment bin; the plurality of battery clusters are arranged in the battery compartment in parallel, and each battery cluster comprises a plurality of stacked battery packs; the liquid cooling unit is placed in the equipment bin; the liquid cooling pipeline comprises a main pipeline and branch pipelines, the main pipeline is communicated with the liquid cooling unit and extends to form a plurality of branch pipelines, and each branch pipeline is connected with the battery packs on the same layer in the plurality of battery clusters in series and converges to the liquid cooling unit. According to the embodiment of the invention, one cabinet body accommodates a plurality of battery clusters, the utilization rate is higher, the space is fully utilized, and the material cost and the manufacturing cost of the cabinet can be reduced; a plurality of battery clusters share one liquid cooling unit, so that the cost is saved; and the liquid cooling pipeline is connected in series with the battery packs on the same layer in the plurality of battery clusters and shares the liquid cooling trunk pipeline, so that the construction cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cabinet heat dissipation, and particularly relates to a liquid-cooled energy storage outdoor cabinet and a liquid-cooled energy storage system. Background Technique

[0002] An energy storage cabinet is a device for storing electric energy. The traditional energy storage cabinet can only realize the function of storing electric energy, but cannot realize functions such as power distribution. In some outdoor application scenarios, the use of an energy storage cabinet also requires the installation of power distribution equipment, a fire protection system, etc., resulting in low system integration, small space utilization rate, and inconvenient maintenance of the entire energy storage cabinet.

[0003] At present, 20-foot or 40-foot standard container energy storage systems are mostly used for power energy storage. Battery clusters, thermal management air conditioners, power conversion systems (PCS), fire protection and other equipment are integrated in the container. A single container energy storage system occupies a large area and has a low energy density per unit area, which is not conducive to the application in narrow locations or areas with tight land resources. In addition, for different power requirements, it is necessary to re-design and develop the container energy storage system, and the development cycle is long. At the same time, the battery system uses air cooling for thermal management, with low air cooling efficiency, large temperature differences between batteries at different positions, and affecting battery consistency.

[0004] In summary, the existing energy storage systems have technical problems such as low energy density and poor heat dissipation efficiency. Content of the Utility Model

[0005] The purpose of this application is to overcome the above technical deficiencies, and propose a liquid-cooled energy storage outdoor cabinet and a liquid-cooled energy storage system to solve the technical problems of low energy density and poor heat dissipation efficiency in the existing technology.

[0006] To achieve the above technical purpose, this application adopts the following technical solutions:

[0007] In the first aspect, this application provides a liquid-cooled energy storage outdoor cabinet, including a cabinet body, a plurality of battery clusters, a liquid-cooled unit, and liquid-cooled pipes:

[0008] The cabinet body has a battery compartment and an equipment compartment;

[0009] A plurality of battery clusters are arranged side by side in the battery compartment, and each battery cluster includes a plurality of stacked battery packs;

[0010] The liquid-cooled unit is placed in the equipment compartment; and

[0011] Liquid cooling pipeline, the liquid cooling pipeline includes a main pipeline and branch pipelines, the main pipeline is communicated with the liquid cooling unit and extends out a plurality of the branch pipelines, and each branch pipeline connects in series the battery packs on the same layer in a plurality of battery clusters and converges to the liquid cooling unit.

[0012] In some embodiments of the present application, the main pipeline includes a first main pipeline and a second main pipeline, both the first main pipeline and the second main pipeline are communicated with the liquid cooling unit, and the first main pipeline and the second main pipeline pass through the equipment compartment and extend to opposite sides of the battery compartment.

[0013] In some embodiments of the present application, the cabinet body includes a plurality of juxtaposed cluster racks, each cluster rack includes a plurality of stacked partitions, and the partitions carry the battery packs.

[0014] In some embodiments of the present application, the partitions of two adjacent cluster racks correspond one by one, the heights of the corresponding two partitions are equal, and a plurality of battery packs are arranged in an array.

[0015] In some embodiments of the present application, the partitions on the same layer have at least two through holes, and the first main pipeline and the second main pipeline respectively pass through one of the through holes.

[0016] In some embodiments of the present application, the main pipeline further includes a plurality of three-way joints, each three-way joint is connected to the first main pipeline or the second main pipeline and is communicated with a branch pipeline.

[0017] In some embodiments of the present application, each branch pipeline includes a first branch pipeline, a second branch pipeline and at least one bridging pipeline, the first branch pipeline connects the first main pipeline with one of the battery packs on the same layer, the second branch pipeline connects the second main pipeline with another battery pack on the same layer, and each bridging pipeline connects two adjacent battery packs.

[0018] In some embodiments of the present application, it further includes a plurality of high-voltage boxes, a plurality of energy storage inverters and a distribution box, each high-voltage box is connected to a battery cluster, each energy storage inverter is connected to a battery cluster, and the distribution box is respectively connected to a plurality of battery clusters.

[0019] In some embodiments of the present application, the liquid cooling unit is placed below one of the battery clusters, and the energy storage inverter and the distribution box are placed below another battery cluster.

[0020] In a second aspect, the present application further provides a liquid cooling energy storage system, including the liquid cooling energy storage outdoor cabinet according to any one of the embodiments in the first aspect.

[0021] Compared with the prior art, the beneficial technical effects brought by the technical solution provided in this application include:

[0022] In the embodiment of this application, a cabinet body accommodates multiple battery clusters, with higher utilization rate, making full use of space, which can reduce the material cost and manufacturing cost of the cabinet; multiple battery clusters share one liquid cooling unit, saving production cost and operation cost; the liquid cooling pipelines connect the battery packs on the same layer in multiple said battery clusters in series, sharing the liquid cooling main pipeline, which can reduce the construction cost of the main pipeline. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in this application, the drawings required for use in the embodiments will be briefly introduced below:

[0024] Figure 1 is a schematic structural diagram of a liquid-cooled energy storage outdoor cabinet provided by an embodiment of this application;

[0025] Figure 2 is a front view of a liquid-cooled energy storage outdoor cabinet provided by an embodiment of this application;

[0026] Figure 3 is a schematic structural diagram of a liquid cooling pipeline provided by an embodiment of this application.

[0027] Reference Signs:

[0028] Cabinet body 1, battery cluster 2, liquid cooling unit 3, liquid cooling pipeline 4, high-voltage box 5, energy storage converter 6, distribution box 7;

[0029] First main pipeline 41, second main pipeline 42, three-way joint 43, first branch pipeline 44, second branch pipeline 45, bridge pipeline 46. Detailed Embodiments

[0030] In order to make the objectives, technical solutions and advantages of this application clearer, the following further details this application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0031] Those skilled in the art can understand that in this specification, the term "including" is an open-ended expression, meaning that the stated features exist but other features are not excluded. The orientation terms "upper", "lower", "left", "right", etc. are based on the exemplary directions shown in the drawings. Features defined with "first" and "second" implicitly include one or more of such features. The singular form can also be used for the plural form. The meaning of "a plurality of" is two or more. The terms "mounted", "connected", and "coupled" can be a fixed connection, a detachable connection, or an integral connection; they can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. In addition, "connection" can include wireless connection.

[0032] The purpose of this application is to overcome the above technical deficiencies and propose a liquid-cooled energy storage outdoor cabinet and a liquid-cooled energy storage system to solve the technical problems of low energy density and poor heat dissipation efficiency in the prior art.

[0033] To achieve the above technical objectives, this application adopts the following technical solutions:

[0034] In a first aspect, this application provides a liquid-cooled energy storage outdoor cabinet, as Figure 1 and Figure 2 shown, Figure 1 is a schematic structural diagram of a liquid-cooled energy storage outdoor cabinet provided by an embodiment of this application; Figure 2 is a front view of a liquid-cooled energy storage outdoor cabinet provided by an embodiment of this application.

[0035] A liquid-cooled energy storage outdoor cabinet includes a cabinet body 1, a plurality of battery clusters 2, a liquid-cooling unit 3, and liquid-cooling pipes 4:

[0036] The cabinet body 1, the cabinet body 1 has a battery compartment and an equipment compartment;

[0037] A plurality of battery clusters 2, the plurality of battery clusters 2 are arranged in parallel in the battery compartment, and each battery cluster 2 includes a plurality of stacked battery packs;

[0038] The liquid-cooling unit 3, the liquid-cooling unit 3 is placed in the equipment compartment; and

[0039] The liquid-cooling pipes 4, the liquid-cooling pipes 4 include a main pipeline and branch pipelines, the main pipeline is communicated with the liquid-cooling unit 3 and extends out a plurality of the branch pipelines, and each branch pipeline connects in series the battery packs of the same layer in the plurality of battery clusters 2 and converges to the liquid-cooling unit 3.

[0040] In the embodiments of the present application, a cabinet 1 accommodates multiple battery clusters 2, with higher utilization rate, making full use of space, which can reduce the cabinet material cost and manufacturing cost; by sharing one liquid cooling unit 3 among multiple battery clusters 2, the production cost and operation cost can be saved; the liquid cooling pipelines 4 connect the battery packs on the same layer in multiple said battery clusters 2 in series, sharing the liquid cooling main pipeline, which can reduce the construction cost of the main pipeline.

[0041] As Figure 3 shown, Figure 3 Figure 7 is a schematic structural diagram of a liquid cooling pipeline 4 provided by an embodiment of the present application.

[0042] In some embodiments of the present application, the main pipeline includes a first main pipe 41 and a second main pipe 42, both the first main pipe 41 and the second main pipe 42 are connected to the liquid cooling unit 3, and the first main pipe 41 and the second main pipe 42 pass through the equipment compartment and extend to opposite sides of the battery compartment.

[0043] In this embodiment, the first main pipe 41 and the second main pipe 42 serve as the water outlet pipe and the water inlet pipe of the liquid cooling pipeline 4 respectively. By separating the water outlet pipe and the water inlet pipe, a more effective cooling cycle can be formed. The water outlet pipe takes away heat from the battery compartment, while the water inlet pipe delivers the coolant to the liquid cooling unit 3 for cooling, which helps to maintain the stability and efficiency of the cooling system.

[0044] In some embodiments of the present application, the cabinet 1 includes multiple juxtaposed cluster frames, and each cluster frame includes multiple stacked partitions, and the partitions carry the battery packs.

[0045] In some embodiments of the present application, the partitions of two adjacent cluster frames correspond one by one, the heights of the corresponding two partitions are equal, and multiple said battery packs are arranged in an array.

[0046] In this embodiment, the array arrangement of the battery packs and the stacked design of the partitions make the space utilization more efficient, allowing more battery packs to be accommodated in a limited space and improving the energy density of the energy storage system. Since the battery packs are arranged in an array and the heights of the partitions are equal, this helps to achieve uniform heat dissipation between the battery packs, reduce local hot spots, and improve the performance and lifespan of the batteries. This design allows the cluster frames and partitions to be produced and assembled in a modular manner, facilitating quick adjustment of the system scale and configuration according to different energy storage requirements.

[0047] In some embodiments of the present application, the partitions on the same layer have at least two through holes, and the first main pipe 41 and the second main pipe 42 respectively pass through one of the through holes.

[0048] In this embodiment, through the through-holes of the partition plate, the cooling pipes can be effectively guided through different areas, making the pipe layout more reasonable, reducing unnecessary bends and folds, and lowering the fluid resistance of the pipes. Since the cooling pipes directly pass through the partition plate, the coolant can reach each battery pack more directly, improving the efficiency of the cooling system and helping to maintain the battery pack at the optimal operating temperature.

[0049] In some embodiments of the present application, the main pipeline further includes a plurality of three-way joints 43. Each three-way joint 43 is connected to the first main pipeline 41 or the second main pipeline 42 and communicates with one branch pipeline.

[0050] In this embodiment, through the three-way joints 43 and the branch pipelines, it can be ensured that each battery pack or battery cluster 2 obtains an appropriate amount of coolant, improving the cooling uniformity of the entire system. The addition of the three-way joints increases the flexibility of the system, and the cooling network can be easily adjusted or expanded according to needs to adapt to different system configurations or future upgrades.

[0051] In some embodiments of the present application, each branch pipeline includes a first branch pipe 44, a second branch pipe 45, and at least one bridging pipe 46. The first branch pipe 44 communicates the first main pipeline 41 with one of the battery packs on the same layer, the second branch pipe 45 communicates the second main pipeline 42 with another battery pack on the same layer, and each bridging pipe 46 communicates two adjacent battery packs.

[0052] In this embodiment, the outlet pipeline of the liquid cooling unit 3 is divided into multiple branches and flows into the water cooling circuit of the battery pack in one of the battery clusters 2, then flows into the water cooling circuits of the battery packs in other battery clusters 2 from the outlet of the battery pack in one of the battery clusters 2, and then flows out from the outlets of the battery packs in other battery clusters 2 and converges to return to the liquid cooling unit 3 together.

[0053] It can be understood that there can be one other battery cluster 2, that is, the entire cabinet 1 accommodates two battery clusters 2. There can also be two or more other battery clusters 2, and the battery clusters 2 are connected in series, that is, the entire cabinet 1 accommodates at least three battery clusters 2.

[0054] In some embodiments of the present application, it further includes a plurality of high-voltage boxes 5, a plurality of energy storage inverters 6, and a distribution box 7. Each high-voltage box 5 is connected to one battery cluster 2, each energy storage inverter 6 is connected to one battery cluster 2, and the distribution box 7 is respectively connected to a plurality of battery clusters 2.

[0055] In some embodiments of the present application, the liquid cooling unit 3 is placed below one of the battery clusters 2, and the energy storage inverter 6 and the distribution box 7 are placed below another battery cluster 2.

[0056] In this embodiment, other lines such as the communication of multiple battery clusters 2 are all controlled by the distribution box 7; the energy storage cabinet is composed of multiple cluster frames, and the cluster frames divide the battery compartments and equipment compartments.

[0057] In one of the cluster frames, one battery cluster 2, one high-voltage box 5 are placed in the battery compartment, and the liquid cooling unit 3 is placed in the equipment compartment. In another cluster frame, another battery cluster 2 and another high-voltage box 5 are placed, and multiple PCSs and the distribution box 7 are placed in the equipment compartment. The position of the liquid cooling unit 3 corresponds to the partition layer where the PCSs and the distribution box 7 are placed, and they are all equipment compartments.

[0058] In a second aspect, the present application also provides a liquid-cooled energy storage system, including the liquid-cooled energy storage outdoor cabinet as described in any one of the embodiments in the first aspect.

[0059] Compared with the prior art, the beneficial technical effects brought by the technical solution provided by the present application include:

[0060] In the embodiment of the present application, one cabinet body 1 accommodates multiple battery clusters 2, with higher utilization rate, making full use of space, and can reduce the material cost and manufacturing cost of the cabinet; multiple battery clusters 2 share one liquid cooling unit 3, saving production cost and operation cost; the liquid cooling pipelines 4 connect the battery packs on the same layer in multiple said battery clusters 2 in series, sharing the liquid cooling main pipeline, and can reduce the construction cost of the main pipeline.

[0061] Those skilled in the art of the present technology can understand that the steps, measures, and solutions in various operations, methods, and processes discussed in the present application can be alternated, changed, rearranged, decomposed, combined, or deleted.

[0062] The specific implementation manners of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and deformations made according to the technical concept of the present application should be included within the protection scope of the claims of the present application.

Claims

1. A liquid-cooled energy storage outdoor cabinet, characterized in that: include: A cabinet body, wherein the cabinet body has a battery compartment and an equipment compartment; A plurality of battery clusters, wherein the plurality of battery clusters are arranged in parallel in the battery compartment, and each of the battery clusters comprises a plurality of stacked battery packs; A liquid cooling unit, the liquid cooling unit is placed in the equipment compartment; as well as A liquid cooling pipeline, wherein the liquid cooling pipeline includes a trunk pipeline and a branch pipeline, the trunk pipeline is connected to the liquid cooling unit and extends out a plurality of branch pipelines, each of the branch pipelines connects in series the battery packs on the same layer in the plurality of battery clusters and converges to the liquid cooling unit.

2. The liquid-cooled energy storage outdoor cabinet according to claim 1, characterized in that: The trunk pipeline includes a first trunk pipe and a second trunk pipe, the first trunk pipe and the second trunk pipe are both connected to the liquid cooling unit, and the first trunk pipe and the second trunk pipe pass through the equipment compartment and extend to opposite sides of the battery compartment.

3. A liquid-cooled energy storage outdoor cabinet according to claim 2, characterized in that: The cabinet includes a plurality of parallel cluster frames, each of which includes a plurality of stacked partitions, and the partitions support the battery packs.

4. A liquid-cooled energy storage outdoor cabinet according to claim 3, characterized in that: The partitions of two adjacent cluster frames correspond to each other one by one, the heights of the two corresponding partitions are equal, and the multiple battery packs are arranged in an array.

5. A liquid-cooled energy storage outdoor cabinet according to claim 4, characterized in that: The partition plate on the same layer has at least two through holes, and the first trunk pipeline and the second trunk pipeline pass through one of the through holes respectively.

6. A liquid-cooled energy storage outdoor cabinet according to claim 2, characterized in that: The main pipeline also includes a plurality of three-way joints, each of which is connected to the first main pipeline or the second main pipeline and is connected to one of the branch pipelines.

7. A liquid-cooled energy storage outdoor cabinet according to claim 6, characterized in that: Each of the branch pipes includes a first branch pipe, a second branch pipe and at least one bridge pipe, the first branch pipe connects the first main pipe with one of the battery packs on the same layer, the second branch pipe connects the second main pipe with another battery pack on the same layer, and each bridge pipe connects two adjacent battery packs.

8. The liquid-cooled energy storage outdoor cabinet according to claim 1, characterized in that: It also includes multiple high-voltage boxes, multiple energy storage converters and a distribution box, each of the high-voltage boxes is connected to one of the battery clusters, each of the energy storage converters is connected to one of the battery clusters, and the distribution box is connected to multiple battery clusters respectively.

9. The liquid-cooled energy storage outdoor cabinet according to claim 8, characterized in that: The liquid cooling unit is placed under one of the battery clusters, and the energy storage converter and the distribution box are placed under another of the battery clusters.

10. A liquid-cooled energy storage system, characterized in that: Comprising a liquid-cooled energy storage outdoor cabinet as described in any one of claims 1-9.

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