Energy storage system

By designing a split battery chamber liquid cooling unit and a comprehensive chamber thermal management unit in the energy storage system, the problem of difficulty in achieving fine temperature control and large space in the prior art liquid cooling unit is solved, and efficient thermal management and simplified system layout and maintenance are achieved.

CN222546435UActive Publication Date: 2025-02-28SUNGROW POWER SUPPLY CO LTD
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Patent Information

Application Number
CN202323492767.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-20
Publication Date
2025-02-28
Estimated Expiration
2033-12-20

AI Technical Summary

Technical Problem

In existing large-scale energy storage systems, it is difficult for an integrated liquid-cooling unit to achieve fine temperature control on the battery side and the energy storage converter side, the thermal management efficiency is low, and the layout of the liquid-cooling unit takes up a large space, which makes installation and maintenance difficult, and the thermal management of the entire system fails in the event of a failure.

Method used

A split energy storage system is designed, the battery chamber liquid cooling unit is independently installed in the battery cabin door, and the integrated chamber thermal management unit is independently installed in the integrated chamber door, which is used to separately manage the heat dissipation of the battery cabin and the integrated chamber, so as to realize independent temperature control on the battery side and the energy storage converter side.

Benefits of technology

Through the split structure, the short-board effect is eliminated, the thermal management efficiency of the energy storage system is improved, the cost and space occupation of liquid-cooled pipelines are reduced, the system layout and maintenance is simplified, and the system can still operate with reduced power when the liquid-cooled unit in the battery compartment is malfunctioned.

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Abstract

The utility model discloses an energy storage system, which comprises an energy storage box body, the energy storage box body is provided with a battery cabin, a battery cabin door, a comprehensive cabin and a comprehensive cabin door, the battery cabin is used for accommodating a battery module, and the comprehensive cabin is used for accommodating an energy storage converter, a confluence cabinet and an electrical cabinet; the battery compartment liquid cooling unit is arranged on the battery compartment door, and the battery compartment liquid cooling unit is used for performing thermal management on the battery compartment; the comprehensive cabin heat management unit is arranged on the comprehensive cabin door, and the comprehensive cabin heat management unit is used for carrying out heat management on the comprehensive cabin; wherein the battery cabin liquid cooling unit and the comprehensive cabin heat management unit are of a split structure and are mutually independent. According to the energy storage system, heat dissipation of the battery cabin and heat dissipation of the comprehensive cabin can be independently managed, that is, the temperature of the battery side and the temperature of the energy storage converter side can be independently controlled, the short-plate effect can be eliminated, and the heat management efficiency of the energy storage system is improved; the power density of the energy storage system can be maintained or further improved.
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Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation of energy storage systems, and more specifically, to an energy storage system. Background Art

[0002] At present, large-scale energy storage systems use integrated liquid cooling units, which are arranged at the end or middle of the energy storage box.

[0003] In the above energy storage system, the integrated liquid cooling unit is difficult to achieve fine temperature control on the battery side and the energy storage inverter side, has an obvious short board effect, and has low thermal management efficiency.

[0004] In addition, the integrated liquid cooling unit is arranged at the end or middle of the box. A long main liquid cooling pipeline needs to be arranged from the liquid cooling unit to the battery module and energy storage inverter, which is costly, occupies a large box space, and the installation and maintenance space of the liquid cooling unit is limited.

[0005] In addition, once the integrated liquid cooling unit fails, the thermal management of the entire energy storage system will fail completely and the entire energy storage system will not be able to operate normally.

[0006] In summary, how to design a liquid cooling unit in an energy storage system to improve thermal management efficiency is a problem that currently needs to be solved urgently by those skilled in the art. Utility Model Content

[0007] In view of this, an object of the present application is to provide an energy storage system to improve thermal management efficiency.

[0008] In order to achieve the above objectives, this application provides the following technical solutions:

[0009] An energy storage system, comprising:

[0010] An energy storage box, wherein the energy storage box is provided with a battery compartment, a battery compartment door, an integrated compartment and an integrated compartment door, wherein the battery compartment is used to accommodate a battery module, and the integrated compartment is used to accommodate an energy storage converter, a junction box and an electrical cabinet;

[0011] A battery compartment liquid cooling unit, the battery compartment liquid cooling unit is arranged on the battery compartment door, and the battery compartment liquid cooling unit is used for thermal management of the battery compartment;

[0012] An integrated cabin thermal management unit, the integrated cabin thermal management unit is arranged on the integrated cabin door, and the integrated cabin thermal management unit is used to perform thermal management on the integrated cabin;

[0013] Among them, the battery compartment liquid cooling unit and the integrated compartment thermal management unit are split structures and independent of each other.

[0014] Optionally, there are at least two battery compartments, the battery compartment doors correspond to the battery compartments one-to-one, and the battery compartment liquid cooling units correspond to the battery compartments one-to-one.

[0015] Optionally, every two of the battery compartment liquid cooling units are of split structure and are independent of each other.

[0016] Optionally, the integrated cabin thermal management unit includes an integrated cabin liquid cooling unit or a wall-mounted air conditioner.

[0017] Optionally, the battery compartment main line from the battery compartment liquid cooling unit to the battery module side enters and exits at the hinge side close to the battery compartment door, and the battery compartment main line is connected to the liquid cooling plate of the battery module through a branch pipe;

[0018] And / or, the integrated cabin thermal management unit includes an integrated cabin liquid cooling unit, and the integrated cabin main line from the integrated cabin liquid cooling unit to the energy storage inverter side enters and exits at the hinge side close to the integrated cabin door, and the integrated cabin main line is connected to the liquid cooling plate of the energy storage inverter through a branch pipe.

[0019] Optionally, the battery modules in each battery compartment are clustered.

[0020] Optionally, the battery compartment and the integrated compartment are distributed in sequence along a transverse direction, and the transverse direction is perpendicular to a vertical direction;

[0021] The battery modules are stacked in the horizontal and vertical directions, and the battery modules distributed in sequence in the horizontal direction form a cluster; the energy storage converters are stacked in the vertical direction.

[0022] Optionally, the battery compartment is located on one side of the energy storage inverter, and the electrical cabinet and the combiner cabinet are both located on the other side of the energy storage inverter.

[0023] Optionally, the battery compartment liquid cooling unit has a dehumidification function, and / or the integrated compartment thermal management unit has a dehumidification function.

[0024] Optionally, an explosion relief area is provided at the top of the battery compartment; and / or, the integrated compartment is also used to accommodate a fire protection module.

[0025] The energy storage system provided in the present application can independently manage the heat dissipation of the battery compartment and the heat dissipation of the integrated compartment, that is, it can independently control the temperature on the battery side and the temperature on the energy storage inverter side, can eliminate the short board effect, and improve the thermal management efficiency of the energy storage system.

[0026] The energy storage system provided in the present application makes full use of the gap between the battery compartment door and the battery module, and the gap between the integrated compartment door and the devices in the integrated compartment, by arranging the battery compartment liquid cooling unit on the battery compartment door and the integrated compartment thermal management unit on the integrated compartment door. In this way, the depth direction of the battery module is less affected, and the battery compartment liquid cooling unit and the integrated compartment thermal management unit are avoided from occupying the space in the height direction of the energy storage box. There is no need to set liquid cooling pipelines on the top and bottom of the energy storage box. The saved height space can be used as a space for storing battery modules, so that the power density of the energy storage system can be maintained or further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of an energy storage system provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 A top view of the energy storage system shown;

[0030] Figure 3 Another structural schematic diagram of the energy storage system provided in the embodiment of the present application;

[0031] Figure 4 for Figure 3 A top view of the energy storage system shown.

[0032] Description of reference numerals:

[0033] 1 is the energy storage box, 11 is the battery compartment, 12 is the integrated compartment; 2 is the battery module; 3 is the explosion relief area; 4 is the energy storage inverter; 5 is the junction box; 6 is the electrical cabinet; 7 is the fire protection module; 8 is the battery compartment liquid cooling unit; 9 is the integrated compartment thermal management unit, 91 is the integrated compartment liquid cooling unit, and 92 is the wall-mounted air conditioner. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0036] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0037] like Figure 1-Figure 4 As shown, the energy storage system provided in the embodiment of the present application includes: an energy storage box 1, a battery compartment liquid cooling unit 8, and an integrated compartment thermal management unit 9.

[0038] The energy storage box 1 is provided with a battery compartment 11, a battery compartment door (not shown in the figure), an integrated compartment 12 and an integrated compartment door (not shown in the figure). The battery compartment 11 is used to accommodate the battery module 2, and the integrated compartment 12 is used to accommodate the energy storage inverter 4, the junction cabinet 5 and the electrical cabinet 6.

[0039] It should be noted that the battery compartment door is used to open and close the battery compartment 11, and the integrated compartment door is used to open and close the integrated compartment 12. The energy storage converter 4 is electrically connected to the battery module 2, and all the energy storage converters 4 are combined in the combiner cabinet 5. The electrical cabinet 6 is used to accommodate other electrical components of the energy storage system.

[0040] The battery compartment liquid cooling unit 8 is arranged at the battery compartment door, and the battery compartment liquid cooling unit 8 is used to perform thermal management on the battery compartment 11. The integrated compartment thermal management unit 9 is arranged at the integrated compartment door, and the integrated compartment thermal management unit 9 is used to perform thermal management on the integrated compartment 12. It should be noted that the battery compartment liquid cooling unit 8 and the integrated compartment thermal management unit 9 are both located in the energy storage box 1.

[0041] like Figure 1 and Figure 2 As shown, the above-mentioned integrated cabin thermal management unit 9 includes an integrated cabin liquid cooling unit 91; or Figure 3 and Figure 4 As shown, the above-mentioned integrated cabin thermal management unit 9 includes a wall-mounted air conditioner 92.

[0042] When the integrated cabin thermal management unit 9 includes the integrated cabin liquid cooling unit 91, the integrated cabin 12 performs thermal management by means of liquid cooling.

[0043] When the integrated cabin thermal management unit 9 includes a wall-mounted air conditioner 92, the integrated cabin 12 performs thermal management by air cooling. In order to ensure that each module can operate at an appropriate temperature, the heat dissipation of the components that particularly need heat dissipation in the energy storage converter 4, the electrical cabinet 6, and the combiner cabinet 5 can be enhanced by increasing local turbulence and other methods.

[0044] The battery compartment liquid cooling unit 8 and the integrated compartment thermal management unit 9 are split structures and are independent of each other. In this way, according to the thermal management requirements of the cluster-level battery, a battery compartment liquid cooling unit 8 with appropriate energy is selected and arranged on the battery compartment door; according to the thermal management requirements of the integrated compartment 12, an integrated compartment thermal management unit 9 with appropriate energy is selected and arranged on the integrated compartment door, and the battery compartment liquid cooling unit 8 independently controls and manages a cluster of battery compartments 11, and the integrated compartment thermal management unit 9 independently controls and manages the integrated compartment 12.

[0045] In the above energy storage system, the heat dissipation of the battery compartment and the heat dissipation of the integrated compartment can be managed separately, that is, the temperature on the battery side and the temperature on the energy storage inverter side can be controlled separately, which can eliminate the short board effect and improve the thermal management efficiency of the energy storage system.

[0046] In the above-mentioned energy storage system, the battery compartment liquid cooling unit 8 is arranged on the battery compartment door. Compared with the prior art, the main liquid cooling pipeline between the battery compartment liquid cooling unit 8 and the battery module 2 is effectively shortened, thereby reducing costs and reducing the occupation of the box space; it can also simplify the layout of the thermal management system and the layout of the liquid cooling pipeline; because the battery compartment liquid cooling unit 8 and the liquid cooling pipeline can be directly touched after the door is opened, the maintenance and inspection of the energy storage system are facilitated, and the shortcoming that the liquid cooling unit is difficult to reach and repair due to space limitations when placed at the end or middle of the energy storage box 1 is avoided, thereby improving the installation and maintainability of the battery compartment liquid cooling unit 8.

[0047] Correspondingly, when the integrated cabin thermal management unit 9 includes the integrated cabin liquid cooling unit 91, the main liquid cooling pipeline between the integrated cabin liquid cooling unit 91 and the energy storage inverter 4 is effectively shortened, thereby reducing costs and reducing the occupation of the box space; because the integrated cabin liquid cooling unit 91 and the liquid cooling pipeline can be directly touched after the door is opened, the maintenance and inspection of the energy storage system are convenient, and the shortcoming that the liquid cooling unit is difficult to reach and repair due to space limitations when placed at the end or middle of the energy storage box 1 is avoided, thereby improving the installation and maintainability of the integrated cabin liquid cooling unit 91; it can also simplify the thermal management system layout and the liquid cooling pipeline layout.

[0048] Compared with some existing technologies in which the integrated liquid cooling unit is located in the integrated cabin 12 and at the top or bottom of the energy storage inverter 4, the above-mentioned energy storage system moves the integrated cabin thermal management module 9 to the integrated cabin door, reserving more space for equipment such as the energy storage inverter 4, the junction cabinet 5, and the electrical cabinet 6, facilitating reasonable layout and adding a fire protection module 7.

[0049] In the above energy storage system, by arranging the battery compartment liquid cooling unit 8 on the battery compartment door and the integrated compartment thermal management unit 9 on the integrated compartment door, full use is made of the gap between the battery compartment door and the battery module 2, and the gap between the integrated compartment door and the devices in the integrated compartment. In this way, the depth direction of the battery module 2 is less affected, and the battery compartment liquid cooling unit 8 and the integrated compartment thermal management unit 9 are avoided from occupying the space in the height direction of the energy storage box 1. There is no need to set liquid cooling pipelines on the top and bottom of the energy storage box 1. The saved height space can be used as a space for storing the battery module 2, so that the power density of the energy storage system can be maintained or further improved.

[0050] In the above energy storage system, by setting the battery compartment liquid cooling unit 8 on the battery compartment door and the integrated compartment thermal management unit 9 on the integrated compartment door, compared with the prior art in which the entire liquid cooling unit is set in the integrated compartment 12, part of the liquid cooling unit is moved out of the integrated compartment 12, so that the battery compartment 11 can be widened to a certain extent in the width direction, so that the space size of the battery module 2 can be kept equivalent or increased, thereby keeping the energy density of the energy storage system equivalent or increased. It should be noted that the width direction of the battery compartment 11 is the distribution direction of the battery compartment 11 and the integrated compartment 12.

[0051] The battery compartment 11 may be one or more than two. When there are at least two battery compartments 11, the battery compartment door corresponds to the battery compartment 11 one by one, and the battery compartment liquid cooling unit 8 corresponds to the battery compartment 11 one by one. It can be understood that the battery compartment door corresponds to the battery compartment liquid cooling unit 8 one by one. The battery compartment 11 and the integrated compartment 12 are distributed in sequence along the lateral direction, and every two battery compartments 11 are distributed in sequence along the lateral direction, and the lateral direction is perpendicular to the vertical direction.

[0052] In some embodiments, every two battery compartment liquid cooling units 8 can be selected to be split structures and independent of each other. In this way, when a battery compartment liquid cooling unit 8 corresponding to a battery compartment 11 fails, the entire energy storage system can still operate at reduced power.

[0053] In some embodiments, the main battery compartment pipe from the battery compartment liquid cooling unit 8 to the battery module side can be selected to enter and exit at the hinge side close to the battery compartment door, and the main battery compartment pipe is connected to the liquid cooling plate of the battery module 2 through a branch pipe. In this way, after the liquid cooling pipe enters the energy storage box 1, it can directly reach the branch pipe of the cluster-level battery, without the need for the traditional thick and long main pipe layout, saving the pipe cost and the internal space of the energy storage box 1 occupied.

[0054] Correspondingly, when the integrated cabin thermal management unit 9 includes an integrated cabin liquid cooling unit 91, the integrated cabin main line from the integrated cabin liquid cooling unit 91 to the energy storage inverter side can be selected to enter and exit at the hinge side close to the integrated cabin door, and the integrated cabin main line is connected to the liquid cooling plate of the energy storage inverter 4 through a branch pipe. In this way, after the liquid cooling pipeline enters the energy storage box 1, it can directly reach the branch pipe of the energy storage inverter 4, without the need for the traditional thick and long main line layout, saving the pipeline cost and the internal space of the energy storage box 1 occupied.

[0055] It should be noted that the battery compartment main line, integrated compartment main line and branch pipes can all be called liquid cooling pipes.

[0056] There are multiple battery modules 2 in the battery compartment 11. In some embodiments, the battery modules 2 in each battery compartment 11 can be selected to be clustered, that is, a battery cluster is provided in each battery compartment 11. In this way, refined thermal management of the battery cluster is achieved, the short board effect is eliminated to a certain extent, and the thermal management efficiency is improved; moreover, it is particularly suitable for the situation where each two battery compartment liquid cooling units 8 are split structures and are independent of each other.

[0057] Of course, the battery modules 2 may also be clustered in other ways. In some other embodiments, the battery compartment 11 and the integrated compartment 12 are distributed in sequence in the transverse direction; the battery modules 2 are stacked in the transverse and vertical directions, and the battery modules 2 distributed in sequence in the transverse direction are clustered; the energy storage inverter 4 is stacked in the vertical direction. Among them, the transverse direction is perpendicular to the vertical direction. The transverse direction can be understood as the length direction or width direction of the energy storage box 1, and the vertical direction is the height direction of the energy storage box 1.

[0058] In the above embodiment, the wiring of the battery cluster to the energy storage inverter 4 is facilitated, and there is no cable arrangement at the bottom and top of the battery compartment 11, which can save the wiring space at the bottom or top of the battery compartment 11, and can provide more space for the battery module 2 in the vertical direction, thereby realizing an improvement in the energy density of the system.

[0059] When the integrated cabin thermal management unit 9 includes the integrated cabin liquid cooling unit 91, the energy storage converter 4 is stacked in the vertical direction. In this way, the liquid cooling pipeline connecting the integrated cabin liquid cooling unit 91 and the energy storage converter 4 is shortened, and the cost of the liquid cooling pipeline is reduced.

[0060] In some embodiments, the battery compartment 11 is located on one side of the energy storage converter 4, and the electrical cabinet 6 and the combiner cabinet 5 are both located on the other side of the energy storage converter 4. In this way, the energy storage converter 4 is close to the battery module 2 and the combiner cabinet 5, which facilitates the wiring of the battery module 2 to the energy storage converter side and the wiring of the energy storage converter 4 to the combiner cabinet 5 side, reduces the amount of cables used, reduces the cable cost, and simplifies the wiring operation.

[0061] In actual situations, the energy storage converter 4 , the combiner cabinet 5 and the electrical cabinet 6 may also be distributed in other ways, which are not limited to the above embodiments.

[0062] In the energy storage system, the type of the battery compartment liquid cooling unit 8 and the type of the integrated compartment thermal management unit 9 are selected according to the actual situation. In some embodiments, the battery compartment liquid cooling unit 8 has a dehumidification function, so that the battery compartment liquid cooling unit 8 can dehumidify the battery compartment 11 to provide a low humidity environment for system operation; and / or the integrated compartment thermal management unit 9 has a dehumidification function, so that the integrated compartment thermal management unit 9 can dehumidify the integrated compartment 12 to provide a low humidity environment for system operation.

[0063] It should be noted that when the system humidity is high, the battery compartment liquid cooling unit 8 located at the battery compartment door and the integrated compartment thermal management unit 9 located at the integrated compartment door turn on the dehumidification function for dehumidification.

[0064] In some embodiments, an explosion relief zone 3 is provided at the top of the battery compartment 11. It should be noted that the battery compartment door is located between the top and bottom of the battery compartment 11, and the explosion relief zone 3 and the battery compartment 11 are located at different positions of the battery compartment 11, that is, the explosion relief zone 3 and the battery compartment 11 are located at different positions of the energy storage box 1.

[0065] In some embodiments, the integrated cabin 12 is also used to accommodate the fire module 7. In order to prevent the fire module 7 from affecting the connection between the energy storage converter 4 and the battery module 2, the fire module 7, the electrical cabinet 6 and the junction cabinet 5 can be selected to be located on the same side of the energy storage converter 4.

[0066] The distribution mode of the fire protection modules 7, electrical cabinets 6 and combiner cabinets 5 is selected according to actual conditions. For example, the fire protection modules 7, electrical cabinets 6 and combiner cabinets 5 are distributed in sequence, which is not limited in this embodiment.

[0067] In order to facilitate fire fighting, the fire fighting module 7 can be selected to be close to the integrated door. In this case, the fire fighting module 7, the electrical cabinet 6 and the junction cabinet 5 are sequentially distributed along the direction perpendicular to the integrated door.

[0068] The energy storage system provided in the above embodiment may be a large-scale energy storage system, such as an industrial and commercial energy storage system. This embodiment does not limit the type of energy storage system.

[0069] The energy storage system provided in the above embodiment provides a more reasonable system layout solution for large-scale energy storage systems. The split-type door-mounted liquid cooling unit is adopted to make thermal management more refined and simple, improve thermal management efficiency, reduce pipeline costs and save space in the box, and improve the installation and maintainability of the liquid cooling unit. When a battery compartment liquid cooling unit 8 on the battery compartment side fails, other battery compartment liquid cooling units 8 can still work normally, and the energy storage system can still operate at reduced power.

[0070] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy storage system, characterized in that: include: An energy storage box, wherein the energy storage box is provided with a battery compartment, a battery compartment door, an integrated compartment and an integrated compartment door, wherein the battery compartment is used to accommodate a battery module, and the integrated compartment is used to accommodate an energy storage converter, a junction box and an electrical cabinet; A battery compartment liquid cooling unit, the battery compartment liquid cooling unit is arranged on the battery compartment door, and the battery compartment liquid cooling unit is used for thermal management of the battery compartment; An integrated cabin thermal management unit, the integrated cabin thermal management unit is arranged on the integrated cabin door, and the integrated cabin thermal management unit is used to perform thermal management on the integrated cabin; Among them, the battery compartment liquid cooling unit and the integrated compartment thermal management unit are split structures and independent of each other.

2. The energy storage system according to claim 1, characterized in that: There are at least two battery compartments, the battery compartment doors correspond to the battery compartments one by one, and the battery compartment liquid cooling units correspond to the battery compartments one by one.

3. The energy storage system according to claim 2, characterized in that: Every two of the battery compartment liquid cooling units are of split structure and are independent of each other.

4. The energy storage system according to claim 1, characterized in that: The integrated cabin thermal management unit includes an integrated cabin liquid cooling unit or a wall-mounted air conditioner.

5. The energy storage system according to claim 1, characterized in that: The battery compartment main line from the battery compartment liquid cooling unit to the battery module side enters and exits at the hinge side close to the battery compartment door, and the battery compartment main line is connected to the liquid cooling plate of the battery module through a branch pipe; And / or, the integrated cabin thermal management unit includes an integrated cabin liquid cooling unit, and the integrated cabin main line from the integrated cabin liquid cooling unit to the energy storage inverter side enters and exits at the hinge side close to the integrated cabin door, and the integrated cabin main line is connected to the liquid cooling plate of the energy storage inverter through a branch pipe.

6. The energy storage system according to claim 1, characterized in that: The battery modules in each battery compartment are clustered.

7. The energy storage system according to claim 1, characterized in that: The battery compartment and the integrated compartment are distributed in sequence along a transverse direction, and the transverse direction is perpendicular to the vertical direction; The battery modules are stacked in the horizontal and vertical directions, and the battery modules distributed in sequence in the horizontal direction form a cluster; the energy storage converters are stacked in the vertical direction.

8. The energy storage system according to claim 7, characterized in that: The battery compartment is located on one side of the energy storage converter, and the electrical cabinet and the combiner cabinet are both located on the other side of the energy storage converter.

9. The energy storage system according to claim 1, characterized in that: The battery compartment liquid cooling unit has a dehumidification function, and / or the integrated compartment thermal management unit has a dehumidification function.

10. The energy storage system according to any one of claims 1 to 9, characterized in that: An explosion relief area is provided at the top of the battery compartment; and / or, the integrated compartment is also used to accommodate a fire protection module.

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