Energy storage cabinet and energy storage system
By separating independent spaces within the energy storage cabinet and setting up parallel piping components for independent circulating coolant, the heat problem of battery modules and energy storage converters in the energy storage system is solved, improving temperature uniformity and heat dissipation, and protecting battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNGROW POWER SUPPLY CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-09
AI Technical Summary
In energy storage systems, the heat generated by battery modules and energy storage converters during high-power charging and discharging processes leads to poor temperature uniformity and heat dissipation, affecting battery performance.
The energy storage cabinet is divided into independent spaces, with pipeline components installed in parallel to independently circulate coolant to the battery modules and energy storage converter modules, and is cooled by a liquid cooling system.
It improves the temperature uniformity and heat dissipation of the battery module and energy storage converter module, thus protecting their performance.
Smart Images
Figure CN224342429U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage system. Background Technology
[0002] Currently, energy storage systems typically include battery modules and power conversion systems (PCS). Both battery modules and power conversion systems generate significant heat during high-power charging and discharging processes. The heat generated by the power conversion system can easily worsen the temperature uniformity of the battery modules, affecting battery performance. Simultaneously, the heat from the battery modules can also impair the heat dissipation performance of the power conversion system. Utility Model Content
[0003] This application provides an energy storage cabinet to at least partially solve the above-mentioned technical problems.
[0004] To achieve the above objectives, according to a first aspect of this application, an energy storage cabinet is provided, comprising: a cabinet body, the interior of which is partitioned to form a first space, a second space and a third space;
[0005] The battery module is located in the first space;
[0006] The energy storage converter module is located in the second space;
[0007] A liquid cooling system is provided inside the cabinet. The liquid cooling system includes a liquid cooling unit, a first piping assembly, and a second piping assembly. The liquid cooling unit is located in the third space. The first piping assembly and the second piping assembly are respectively connected to the liquid cooling unit. The first piping assembly is configured to circulate coolant toward the battery module, and the second piping assembly is configured to circulate coolant toward the energy storage converter module.
[0008] Optionally, the cabinet has intersecting height and width directions, the first space and the second space are distributed in the height direction, and the third space and the first space are distributed in the width direction;
[0009] The first piping assembly includes a first liquid inlet pipe and a first liquid outlet pipe that are respectively connected to the first space, and the first liquid inlet pipe and the first liquid outlet pipe are respectively connected to the liquid cooling unit. At least a portion of the first liquid inlet pipe and at least a portion of the first liquid outlet pipe extend along the height direction.
[0010] Optionally, the second piping assembly includes a second liquid inlet pipe and a second liquid outlet pipe that are respectively connected to the second space, and the second liquid inlet pipe and the second liquid outlet pipe are respectively connected to the liquid cooling unit, with at least a portion of the second liquid inlet pipe and at least a portion of the second liquid outlet pipe extending along the height direction.
[0011] Optionally, the first pipeline assembly further includes an exhaust valve, at least one of the first inlet main pipe and the first outlet main pipe is provided with the exhaust valve, and the exhaust valve is located at the top of the pipeline in the height direction.
[0012] Optionally, the liquid cooling system further includes multiple connecting pipes, with a first partition between the first space and the third space, and between the second space and the third space, the connecting pipes passing through the first partitions and being sealed to the first partitions, and the first pipe assembly and the second pipe assembly being connected to the liquid cooling unit through the connecting pipes respectively.
[0013] Optionally, the connecting pipe extends through the first partition along the width direction.
[0014] Optionally, the first space includes a plurality of subspaces spaced apart along the height direction, the plurality of subspaces being used to house the battery module, and the first liquid inlet main pipe and the first liquid outlet main pipe being connected to a plurality of branch pipes, each branch pipe corresponding to one of the subspaces.
[0015] Optionally, the energy storage cabinet further includes a power distribution module, and the cabinet also has a fourth space, which is distributed with the third space in the height direction.
[0016] Optionally, the liquid cooling system further includes multiple locking connectors, and the first piping assembly and the second piping assembly are detachably connected to the cabinet through the multiple locking connectors.
[0017] According to a second aspect of this application, an energy storage system is provided, including the energy storage cabinet described above.
[0018] The energy storage cabinet in this embodiment of the application separates the cabinet into a first space, a second space, and a third space that are independent of each other. The first pipeline assembly and the second pipeline assembly, which are arranged in parallel, independently circulate and deliver coolant to the battery module and the energy storage converter module, which helps to improve the temperature uniformity and heat dissipation of each module and improves the protection of the battery module and the energy storage converter module.
[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.
[0022] Figure 1 This is a schematic diagram of the overall structure of the energy storage cabinet provided in the embodiments of this application;
[0023] Figure 2 This is a layout diagram of the modules inside the energy storage cabinet provided in the embodiments of this application;
[0024] Figure 3 This is a diagram of the internal structure of the cabinet provided in an embodiment of this application;
[0025] Figure 4 This is a schematic diagram of the structure of the first pipeline assembly and the second pipeline assembly provided in the embodiments of this application from one perspective;
[0026] Figure 5 This is a structural schematic diagram of the first and second piping assemblies provided in the embodiments of this application from another perspective.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1-Cabinet body; 11-First space; 111-Subspace; 12-Second space; 13-Third space; 14-Fourth space; 15-First partition; 16-Second partition;
[0029] 2-Battery module; 21-Sub-module;
[0030] 3-Energy storage converter module;
[0031] 4-Liquid cooling system; 41-Liquid cooling unit; 42-First piping assembly; 421-First main inlet pipe; 422-First main outlet pipe; 423-Exhaust valve; 424-Branch pipe; 425-First extension pipe; 43-Second piping assembly; 431-Second main inlet pipe; 432-Second main outlet pipe; 433-Second extension pipe; 44-Connecting pipe; 45-Locking fitting;
[0032] 5-Power distribution module;
[0033] 6-Third piping assembly; 61-Third inlet main pipe; 62-Third outlet main pipe;
[0034] X - Height direction; Y - Width direction; Z - Length direction. Detailed Implementation
[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.
[0036] Energy storage systems typically include battery modules and a power conversion system (PCS). Both battery modules and the power conversion system generate significant heat during high-power charging and discharging. The heat generated by the power conversion system can negatively impact the temperature uniformity of the battery modules, affecting battery performance. Simultaneously, the heat from the battery modules can also impair the heat dissipation performance of the power conversion system.
[0037] In view of this, embodiments of this application provide an energy storage cabinet to overcome at least one of the above-mentioned technical problems.
[0038] This application provides an energy storage cabinet; please refer to [link / reference]. Figures 1 to 5 , Figure 1 This is a schematic diagram of the overall structure of the energy storage cabinet provided in the embodiments of this application. Figure 2 This is a layout diagram of the modules inside the energy storage cabinet provided in the embodiments of this application. Figure 3 This is an internal structural diagram of cabinet 1 provided in an embodiment of this application. Figure 4 This is a schematic diagram of the structure of the first pipeline assembly 42 and the second pipeline assembly 43 provided in the embodiments of this application from one perspective. Figure 5 This is a structural schematic diagram of the first pipeline assembly 42 and the second pipeline assembly 43 provided in the embodiments of this application from another perspective.
[0039] It should be noted that the following embodiments of this application introduce intersecting height direction X, width direction Y, and length direction Z. Specifically, height direction X is approximately parallel to the overall height direction of the energy storage cabinet, width direction Y is approximately parallel to the overall width direction of the energy storage cabinet, and length direction Z is approximately parallel to the overall length direction of the energy storage cabinet.
[0040] Reference Figure 1 , Figure 2 and Figure 4 The energy storage cabinet includes a cabinet body 1, a battery module 2, an energy storage converter module 3, and a liquid cooling system 4.
[0041] The cabinet 1 is internally divided into a first space 11, a second space 12, and a third space 13. The battery module 2 is located in the first space 11, and the energy storage converter module 3 is located in the second space 12. A liquid cooling system 4 is located within the cabinet 1. The liquid cooling system 4 includes a liquid cooling unit 41, a first piping assembly 42, and a second piping assembly 43. The liquid cooling unit 41 is located in the third space 13. The first piping assembly 42 and the second piping assembly 43 are respectively connected to the liquid cooling unit 41. The first piping assembly 42 is configured to circulate coolant to the battery module 2, and the second piping assembly 43 is configured to circulate coolant to the energy storage converter module 3.
[0042] By separating the first space 11, the second space 12, and the third space 13 within the cabinet 1, and using the first pipeline assembly 42 and the second pipeline assembly 43 arranged in parallel to independently circulate and deliver coolant to the battery module 2 and the energy storage converter module 3, it is beneficial to improve the temperature uniformity and heat dissipation of the battery module 2 and the energy storage converter module 3, thereby enhancing the protection of the battery module 2 and the energy storage converter module 3.
[0043] In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 The first space 11 and the second space 12 are distributed in the height direction X, and the third space 13 and the first space 11 are distributed in the width direction Y. The first piping assembly 42 includes a first liquid inlet pipe 421 and a first liquid outlet pipe 422 respectively connected to the first space 11, and the first liquid inlet pipe 421 and the first liquid outlet pipe 422 are respectively connected to the liquid cooling unit 41. In order to reduce the occupation of the first space 11 by the first piping assembly 42, at least a portion of the first liquid inlet pipe 421 and at least a portion of the first liquid outlet pipe 422 extend along the height direction X. The first piping assembly 42 also includes a first extension pipe 425. The first liquid inlet pipe 421 and the first liquid outlet pipe 422 are arranged at intervals in the width direction Y. The first liquid outlet pipe 422 is connected to the liquid cooling unit 41 through the first extension pipe 425, so that the battery module 2 can be arranged between the first liquid inlet pipe 421 and the first liquid outlet pipe 422 along the height direction X. By arranging the first liquid inlet pipe 421 and the first liquid outlet pipe 422 along the height direction X, it is beneficial to reduce the occupation of the first pipeline assembly 42 on the first space 11 and the impact on the arrangement of the battery module 2, optimize the space utilization of the first space 11, and the cooling medium in the liquid cooling unit 41 can be input into the battery module 2 through the first liquid inlet pipe 421. After heat exchange, the cooling medium can return to the liquid cooling unit 41 for cooling through the first liquid outlet pipe 422 and the first extension pipe 425, thereby achieving stable heat dissipation of the battery module 2.
[0044] In some embodiments, refer to Figure 2 , Figure 4 and Figure 5The second piping assembly 43 includes a second liquid inlet pipe 431 and a second liquid outlet pipe 432 that are respectively connected to the second space 12, and the second liquid inlet pipe 431 and the second liquid outlet pipe 432 are respectively connected to the liquid cooling unit 41. Similarly, in order to reduce the space occupied by the second piping assembly 43 in the cabinet 1, at least a portion of the second liquid inlet pipe 431 and at least a portion of the second liquid outlet pipe 432 extend along the height direction X.
[0045] It should be noted that, in this embodiment, as Figure 2 As shown, the first space 11 occupies a much larger area of cabinet 1 in the height direction X than the second space 12 in the height direction X. The third space 13 is only opposite to the first space 11 in the width direction Y. Therefore, the second pipeline assembly 43 needs to pass through the first space 11 before entering the second space 12 to connect with the energy storage converter module 3. In other embodiments, if the third space 13 is opposite to both the first space 11 and the second space 12 in the width direction Y, the second pipeline assembly 43 may not need to pass through the first space 11, which will not be elaborated further here.
[0046] Reference Figure 2 , reference Figure 4 and Figure 5 The second piping assembly 43 further includes a second extension pipe 433. The second liquid inlet pipe 431 and the second liquid outlet pipe 432 are arranged at intervals in the width direction Y, and the bottom ends of the second liquid inlet pipe 431 and the second liquid outlet pipe 432 both penetrate into the second space 12 to connect to the energy storage converter module 3. The second liquid outlet pipe 432 is connected to the liquid cooling unit 41 through the second extension pipe 433, so that the piping structure of the second piping assembly 43 can be approximately the same as that of the first piping assembly 42, thereby reducing the occupation of the first space 11 through centralized piping.
[0047] In some embodiments, refer to Figures 2 to 5The liquid cooling system 4 also includes multiple connecting pipes 44. First partitions 15 are spaced between the first space 11 and the third space 13, and between the second space 12 and the third space 13. The connecting pipes 44 pass through the first partitions 15 and are sealed to the first partitions 15. The first pipe assembly 42 and the second pipe assembly 43 are respectively connected to the liquid cooling unit 41 through the connecting pipes 44. It is understood that in this embodiment, only the first space 11 and the third space 13 are separated by the first partition 15 in the width direction Y. In practice, during the connection of the second pipe assembly 43, the connecting pipes 44 connected to the second pipe assembly 43 also need to be arranged on the first partition 15. Therefore, the first partition 15 can also be considered as a structure spaced between the second space 12 and the third space 13. In other embodiments, if the second space 12 and the third space 13 are opposite each other in the width direction Y, the first partition 15 between the second space 12 and the third space 13 can be integrally formed with the first partition 15 between the first space 11 and the third space 13, or it can be an independent structure. The connecting pipe 44 and the first partition 15 can be sealed using fire-resistant sealing materials such as fireproof rubber strips. The sealing principle is existing technology and will not be elaborated here. The connecting pipe 44 and its sealing structure with the first partition 15 help improve the sealing effect of the first pipeline assembly 42 and the second pipeline assembly 43 respectively connecting to the liquid cooling unit 41 through the compartment. By pre-installing the connecting pipe 44, the convenience of connecting the first pipeline assembly 42 and the second pipeline assembly 43 to the liquid cooling unit 41 can be improved.
[0048] In addition, refer to Figure 3 The first space 11 and the second space 12 are separated by a second partition 16 in the height direction X. In order to connect the second liquid inlet pipe 431 and the second liquid outlet pipe 432 to the energy storage converter module 3 located in the second space 12, the second partition 16 is also provided with a connecting pipe 44 for the second liquid inlet pipe 431 and the second liquid outlet pipe 432 to connect the energy storage converter module 3 of the second space 12 from the side of the first space 11.
[0049] In some embodiments, refer to Figure 3 , Figure 4 and Figure 5 The connecting pipe 44 passes through the first partition 15 along the width direction Y. In this embodiment, four connecting pipes 44 are respectively arranged along the width direction Y. It can be understood that, compared with the connecting pipes 44 arranged along the height direction X, the first partition 15 can form a support for the connecting pipes 44, which is beneficial to improving the overall sealing effect at the connecting pipes 44.
[0050] In some embodiments, refer to Figure 4 and Figure 5The first pipeline assembly 42 further includes an exhaust valve 423. At least one of the first liquid inlet pipe 421 and the first liquid outlet pipe 422 is provided with an exhaust valve 423, and the exhaust valve 423 is located at the top of the pipeline in the height direction X. In this embodiment, the top of the first liquid inlet pipe 421 and the top of the first liquid outlet pipe 422 in the height direction X are respectively equipped with exhaust valves 423. During the circulation of the cooling medium along the first liquid inlet pipe 421 and the first liquid outlet pipe 422, the exhaust valves 423 can discharge residual air inside the pipeline, improving the stability of the cooling medium flow. It is understood that in other embodiments, exhaust valves 423 may only be provided on the first liquid inlet pipe 421 or the first liquid outlet pipe 422, which will not be described in detail here.
[0051] Furthermore, in some embodiments, reference is made to Figure 4 and Figure 5 To improve the stability of the piping layout in the first piping assembly 42 and the second piping assembly 43, multiple locking members 45 are arranged in both the first piping assembly 42 and the second piping assembly 43 along their respective piping extension directions. These locking members 45 are used to lock the cabinet 1, thereby achieving rapid constraint and fixation of the entire piping system. The locking members 45 can adopt detachable structures such as straps or clamps to facilitate subsequent disassembly and maintenance.
[0052] In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 The first space 11 includes multiple subspaces 111 spaced apart along the vertical direction X. Each subspace 111 is used to house a battery module 2; that is, each battery module 2 includes multiple submodules 21, with each submodule 21 corresponding to one subspace 111. Correspondingly, the first liquid inlet main pipe 421 and the first liquid outlet main pipe 422 are connected to multiple branch pipes 424, each branch pipe 424 corresponding to one subspace 111. The multiple subspaces 111 and submodules 21 facilitate independent heat dissipation and maintenance, and improve the temperature uniformity of the battery module 2.
[0053] Furthermore, in some embodiments, reference is made to Figure 4 and Figure 5 The liquid cooling system 4 also includes a third piping assembly 6, which includes a third liquid inlet pipe 61 and a third liquid outlet pipe 62. The third liquid inlet pipe 61 can be connected to the bottom end of the first liquid inlet pipe 421, and the third liquid outlet pipe 62 can be connected to the bottom end of the first liquid outlet pipe 422. To further improve the heat dissipation effect of the energy storage converter module 3, an auxiliary heat exchanger for heat dissipation of the energy storage converter module 3 can be additionally installed in the second space 12. This heat exchanger can be circulated through the third liquid inlet pipe 61 and the third liquid outlet pipe 62 to the liquid cooling unit 41.
[0054] In some embodiments, refer to Figure 2 and Figure 3 The energy storage cabinet also includes a power distribution module 5, and the cabinet body 1 also has a fourth space 14. The fourth space 14 and the third space 13 are distributed in the height direction X. The wiring and operating principles of the battery module 2, the energy storage converter module 3, and the power distribution module 5 are existing technologies and will not be described in detail here. In addition, in some embodiments, the fourth space 14 and the first space 11 can be connected. Without additional heat dissipation structures, the heat dissipation structure used by the battery module 2 can assist the power distribution module 5 in heat dissipation, which helps to reduce space occupation and the use of additional heat dissipation.
[0055] This application provides an energy storage system including the aforementioned energy storage cabinet. It is understood that this energy storage system possesses all the technical features and effects of the aforementioned energy storage cabinet, which will not be elaborated upon here.
[0056] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0058] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.
[0059] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. An energy storage cabinet, characterized in that, include: The cabinet (1) has internal partitions forming a first space (11), a second space (12) and a third space (13); Battery module (2) is disposed in the first space (11); An energy storage converter module (3) is located in the second space (12); A liquid cooling system (4) is located inside the cabinet (1). The liquid cooling system (4) includes a liquid cooling unit (41), a first piping assembly (42), and a second piping assembly (43). The liquid cooling unit (41) is located in the third space (13). The first piping assembly (42) and the second piping assembly (43) are respectively connected to the liquid cooling unit (41). The first piping assembly (42) is configured to circulate coolant to the battery module (2), and the second piping assembly (43) is configured to circulate coolant to the energy storage converter module (3).
2. The energy storage cabinet according to claim 1, characterized in that, The cabinet (1) has intersecting height direction (X) and width direction (Y), the first space (11) and the second space (12) are distributed in the height direction (X), and the third space (13) and the first space (11) are distributed in the width direction (Y); The first piping assembly (42) includes a first liquid inlet pipe (421) and a first liquid outlet pipe (422) respectively connected to the first space (11), and the first liquid inlet pipe (421) and the first liquid outlet pipe (422) are respectively connected to the liquid cooling unit (41), and at least a portion of the first liquid inlet pipe (421) and at least a portion of the first liquid outlet pipe (422) extend along the height direction (X).
3. The energy storage cabinet according to claim 2, characterized in that, The second piping assembly (43) includes a second liquid inlet pipe (431) and a second liquid outlet pipe (432) respectively connected to the second space (12), and the second liquid inlet pipe (431) and the second liquid outlet pipe (432) are respectively connected to the liquid cooling unit (41), and at least a portion of the second liquid inlet pipe (431) and at least a portion of the second liquid outlet pipe (432) extend along the height direction (X).
4. The energy storage cabinet according to claim 2, characterized in that, The first pipeline assembly (42) further includes an exhaust valve (423), at least one of the first liquid inlet main pipe (421) and the first liquid outlet main pipe (422) is provided with the exhaust valve (423), and the exhaust valve (423) is located at the top of the pipeline in the height direction (X).
5. The energy storage cabinet according to claim 3, characterized in that, The liquid cooling system (4) further includes multiple connecting pipes (44). A first partition (15) is spaced between the first space (11) and the third space (13), and between the second space (12) and the third space (13). The connecting pipe (44) passes through the first partition (15) and is sealed to the first partition (15). The first pipeline assembly (42) and the second pipeline assembly (43) are respectively connected to the liquid cooling unit (41) through the connecting pipe (44).
6. The energy storage cabinet according to claim 5, characterized in that, The connecting pipe (44) passes through the first partition (15) along the width direction (Y).
7. The energy storage cabinet according to claim 2, characterized in that, The first space (11) includes a plurality of subspaces (111) spaced apart along the height direction (X), the plurality of subspaces (111) being used to house the battery module (2), and the first liquid inlet main pipe (421) and the first liquid outlet main pipe (422) being connected to a plurality of branch pipes (424), each branch pipe (424) being connected to one of the subspaces (111).
8. The energy storage cabinet according to claim 2, characterized in that, The energy storage cabinet also includes a power distribution module (5), and the cabinet (1) also has a fourth space (14), which and the third space (13) are distributed in the height direction (X).
9. The energy storage cabinet according to claim 1, characterized in that, The liquid cooling system (4) also includes multiple locking connectors (45), and the first pipeline assembly (42) and the second pipeline assembly (43) are detachably connected to the cabinet (1) through the multiple locking connectors (45).
10. An energy storage system, characterized in that, Includes the energy storage cabinet as described in any one of claims 1 to 9.