Energy storage system and cascaded energy storage system group

Abstract

The embodiment of the utility model discloses an energy storage system and a cascade energy storage system group, and relates to the field of energy storage. The energy storage system can comprise an energy storage system frame and a plurality of energy storage modules, each energy storage module comprises an operation surface and a heat dissipation surface, the operation surface is used for operating the interior of the energy storage module, the heat dissipation surface is used for heat dissipation of the energy storage module, and the operation surface and the heat dissipation surface are oppositely arranged. Each energy storage module comprises any one of a battery cabinet, an electrical cabinet and an energy storage converter cabinet; the energy storage system frame comprises at least two frame layers arranged in the gravity direction, each frame layer is provided with a plurality of containing spaces, each containing space is used for containing a single energy storage module, and the energy storage modules are electrically connected through cables. Through modular layout of the energy storage system, management of the energy storage system is facilitated.

Description

Technical Field

[0001] This application relates to the field of energy storage, and more specifically, to an energy storage system and a cascaded energy storage system group. Background Art

[0002] With the rapid development of renewable energy, the importance of energy storage systems in power supply has become increasingly prominent. Traditional energy storage systems have many deficiencies in layout and integration methods. The modularity of energy storage systems is relatively low, and it is difficult to perform management tasks such as operation and maintenance on energy storage systems. Summary of the Utility Model

[0003] Embodiments of this application provide an energy storage system and a cascaded energy storage system group, which facilitate the management of the energy storage system through modular layout of the energy storage system.

[0004] In a first aspect, this application provides an energy storage system, including a plurality of energy storage modules. Each energy storage module includes an operation surface and a heat dissipation surface. The operation surface is used to operate the inside of the energy storage module, and the heat dissipation surface is used for heat dissipation of the energy storage module. The operation surface and the heat dissipation surface are arranged opposite to each other. Each energy storage module includes any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet; an energy storage system framework, which includes at least two framework layers arranged along the gravity direction. Each framework layer has a plurality of accommodation spaces, and each accommodation space is used to accommodate a single energy storage module. The plurality of energy storage modules are electrically connected by cables.

[0005] In the technical solution of the embodiments of this application, each energy storage module has its own accommodation space, and each energy storage module is relatively independent. When a certain energy storage module fails, it is convenient to quickly locate and replace, reducing the maintenance difficulty and cost, and improving the maintainability of the system. The hierarchical design of the energy storage system framework and the setting of multiple accommodation spaces in each framework layer improve the space utilization rate, can integrate more energy storage modules in a limited space, and reduce the floor area and construction cost. The energy storage modules are connected by cables, reducing signal interference and power loss, improving the stability and reliability of system operation, and extending the service life of the energy storage system. By arranging the operation surface and the heat dissipation surface opposite to each other, the maintainability and heat dissipation efficiency of the energy storage system are improved. The operation surface is equipped with cabinet doors convenient for operation and maintenance and centrally arranged electrical components, reducing the operation and maintenance difficulty and the risk of errors; the heat dissipation surface dissipates heat from the energy storage module through heat dissipation fins, heat dissipation holes, heat dissipation fans, etc. The opposite arrangement of the two avoids mutual interference, enables smooth heat dissipation, makes the module structure more compact, improves the space utilization rate, and enhances the reliability and maintainability of the energy storage system.

[0006] In some embodiments of the first aspect, each frame layer of the energy storage system further includes a fire protection component, which is disposed on the heat dissipation surface of the energy storage module and is used to handle the thermal runaway of the battery cabinets in the frame layer.

[0007] In the embodiments of the present application, by disposing the fire protection component on the heat dissipation surface of the energy storage module, it is possible to achieve a rapid response to and handling of the thermal runaway of the battery cabinets, greatly shortening the time from detecting the thermal runaway to taking fire protection measures and curbing the spread of the thermal runaway. The open space of the heat dissipation surface provides good conditions for the installation and operation of the fire protection component, improving the fire protection efficiency. This layout mode matches the overall structure of the energy storage system, facilitating maintenance and management, and reducing the construction and operation costs of the fire protection system.

[0008] In some embodiments of the first aspect, the fire protection component is controlled by the electrical cabinet in the energy storage module and powered by the battery cabinet.

[0009] In the embodiments of the present application, the electrical cabinet and the battery cabinet are closely combined with the fire protection component, reducing the intermediate links of signal transmission and power supply, and shortening the response time of the fire protection component. Once a thermal runaway occurs, the fire protection component can quickly take fire extinguishing measures to curb the spread of the fire. The control and power supply of the fire protection component are realized by the electrical cabinet and the battery cabinet of the energy storage module itself, reducing the dependence on the external power grid and control system, and improving the independence and reliability of the fire protection function of the entire energy storage system. The integrated design enables the control and power supply system of the fire protection component to be closely integrated with the energy storage module, facilitating unified maintenance and management, reducing the maintenance cost, and improving the work efficiency.

[0010] In some embodiments of the first aspect, each frame layer of the energy storage system further includes a heat exchange component, which is disposed on the heat dissipation surface of the energy storage module and is used to regulate the temperature of the battery cabinets in the frame layer.

[0011] In the embodiments of the present application, by disposing the heat exchange component on the heat dissipation surface, it is possible to improve the heat dissipation efficiency of the battery cabinets and reduce the operating temperature of the battery cabinets. A stable and appropriate operating temperature helps to improve the charge and discharge efficiency of the batteries and reduce the internal resistance of the batteries. The heat exchange component can control the temperature of the battery cabinets, avoid damage to the batteries due to overheating, reduce the generation of chemical reaction by-products inside the batteries, and slow down the attenuation rate of the battery capacity, thereby significantly extending the service life of the batteries, reducing the frequency of battery replacement, reducing the operating cost of the energy storage system, and improving the economic benefits and long-term stability of the energy storage system.

[0012] In some embodiments of the first aspect, the energy storage system frame includes vertical beams, which are disposed on the heat dissipation surface and extend along the direction of gravity, and the heat exchange component is disposed on the side of the vertical beams away from the energy storage system frame.

[0013] In the embodiments of the present application, the vertical beam provides stable support for the energy storage system. The heat exchange component is installed on the side of the vertical beam away from the energy storage system frame, avoiding occupying additional space inside the energy storage system frame and improving the space utilization rate of the energy storage system. The heat exchange component directly faces the external environment, can make full use of natural ventilation or forced ventilation, and greatly improves the heat dissipation efficiency. At the same time, installing the heat exchange component on the vertical beam makes it closer to the heat dissipation surface of the energy storage module, shortening the heat transfer path and further enhancing the heat dissipation effect.

[0014] In some embodiments of the first aspect, the heat exchange component is controlled by the electrical cabinet in the energy storage module and powered by the battery cabinet.

[0015] In the embodiments of the present application, the collaborative working mode among the electrical cabinet, the battery cabinet, and the heat exchange component shortens the signal transmission and control response time, realizing the response and control of the heat exchange component. Once the temperature of the battery cabinet is abnormal, the heat exchange component can react within an extremely short time, quickly adjust its working state, and contain the further rise of the battery cabinet temperature, enabling the energy storage system to operate in a safe and stable state.

[0016] In some embodiments of the first aspect, the energy storage system further includes a busbar component, which is arranged between two adjacent frame layers and is used to connect the battery cabinets in the energy storage modules in two adjacent frame layers in parallel.

[0017] In the embodiments of the present application, the busbar component realizes the parallel connection between the battery cabinets, making the output voltage and current of each battery cabinet consistent, reducing the possibility of current imbalance caused by improper connection, reducing the battery loss, and extending the battery life. In addition, the centralized connection mode of the busbar component facilitates the unified monitoring and management of the energy storage system. When a certain battery cabinet or connection part fails, it can be quickly located and troubleshot, improving the reliability and stability of the system.

[0018] In some embodiments of the first aspect, the energy storage system further includes an insulating component, which includes a first insulating component and a second insulating component. The first insulating component is arranged between two adjacent frame layers to insulate the two adjacent frame layers from each other, and the second insulating component is arranged between the frame layer and the ground to insulate the frame layer from the ground.

[0019] In the embodiments of the present application, by setting the first insulating component and the second insulating component, the electrical conduction path inside and outside the energy storage system is effectively blocked, reducing the probability of electric leakage accidents and protecting the life safety of operators and the normal operation of equipment.

[0020] In some embodiments of the first aspect, the energy storage system further includes a support component, which is arranged between the second insulating component and the ground.

[0021] In the embodiments of the present application, the support member can evenly distribute the weight of the energy storage system to the ground, reduce the possibility of deformation of the frame structure of the energy storage system caused by uneven ground or excessive local pressure, and improve the stability of the energy storage system. By reducing the pressure on the second insulating member, the support member extends the service life of the insulating member, reduces the risk of electric leakage, and improves the safety of the energy storage system.

[0022] In a second aspect, the present application provides a cascaded energy storage system group, including: a plurality of energy storage systems in the first aspect, wherein the plurality of energy storage systems are connected in series through an energy storage converter.

[0023] In the technical solution of the embodiments of the present application, a plurality of energy storage systems are connected in series through an energy storage converter to form a cascaded energy storage system group, which can improve the voltage level of the cascaded energy storage system group, meet the requirements of large-scale energy storage and high-voltage applications, and broaden the application scope of the energy storage system.

[0024] In some embodiments of the second aspect, the operating surfaces of two adjacent energy storage systems are arranged opposite to each other, and / or the heat dissipation surfaces of two adjacent energy storage systems are arranged opposite to each other.

[0025] In the embodiments of the present application, the operating surfaces of two adjacent energy storage systems are arranged opposite to each other, which simplifies the operation and maintenance process, reduces the operation time and labor intensity of the operation and maintenance personnel, improves the accuracy and timeliness of operation and maintenance, and reduces the risk of equipment failure caused by untimely operation and maintenance. The heat dissipation surfaces being arranged opposite to each other optimizes the heat dissipation path, improves the heat dissipation efficiency, effectively reduces the operating temperature of the energy storage system, reduces equipment damage and safety accidents caused by overheating, and improves the stability and reliability of the energy storage system.

[0026] In some embodiments of the second aspect, two adjacent energy storage systems are connected by a cable, and the cable is arranged at the top or bottom of the two adjacent energy storage systems along the direction of gravity.

[0027] In the embodiments of the present application, the cables are centrally arranged at the top or bottom of adjacent energy storage systems, avoiding the random penetration of cables at other positions, effectively utilizing the vertical space, making the layout of the energy storage system more compact and reasonable, improving the space utilization rate, and reducing the floor area. Concentrating the cables at the top or bottom makes the maintenance and repair of the cables more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural diagram of the energy storage system according to the embodiments of the present application;

[0029] Figure 2 is another structural diagram of the energy storage system according to the embodiments of the present application;

[0030] Figure 3Another structural diagram of the energy storage system according to an embodiment of the present application;

[0031] Figure 4 Structural diagram of the cascaded energy storage system group according to an embodiment of the present application;

[0032] Figure 5 Another structural diagram of the cascaded energy storage system group according to an embodiment of the present application;

[0033] Figure 6 Another structural diagram of the cascaded energy storage system group according to an embodiment of the present application.

[0034] In the drawings, the drawings are not drawn to actual scale.

[0035] Reference numerals:

[0036] 1 - Cascaded energy storage system group; 10 - Energy storage system; 11 - Energy storage system framework; 111 - Framework layer; 1111 - Fire protection component; 1112 - Heat exchange component; 112 - Support member; 12 - Energy storage module; 121 - Operation surface; 122 - Heat dissipation surface. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0040] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0041] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0043] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0044] The term "plurality" as used in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0045] If there is no special indication, all embodiments and optional embodiments of this application can be combined with each other to form new technical solutions.

[0046] If there is no special indication, all technical features and optional technical features of this application can be combined with each other to form new technical solutions.

[0047] In some embodiments, the battery apparatus may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0048] In some embodiments, a battery cell assembly is typically formed by arranging a plurality of battery cells.

[0049] As an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into an independent module. As an example, the battery module can be formed by bundling a plurality of battery cells with cable ties.

[0050] In some embodiments, the battery device can be a battery pack, which includes a battery box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the battery box body.

[0051] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the battery box body by fixing the battery module in the battery box body.

[0052] As an example, the battery cell assembly can also be accommodated in the battery box body by directly fixing a plurality of battery cells to the battery box body.

[0053] As an example, the battery box body can include a first battery box body part and a second battery box body part. The first battery box body part and the second battery box body part are snapped together so that a closed space is formed inside the battery box body to accommodate the battery cell assembly. Here, "closed" means covered or closed, which can be sealed or non-sealed. The first battery box body can be a top cover or a bottom plate.

[0054] As an example, the battery box body can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the battery box body to accommodate the battery cell assembly.

[0055] In some embodiments, the energy storage device can include one or more battery clusters to increase the voltage and capacity of the energy storage device. The battery cluster can include a plurality of battery devices, and the plurality of battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0056] The energy storage device can be used in an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, etc. The energy storage device can store electrical energy as needed and output electrical energy at an appropriate time. For example, the energy storage device can store electrical energy during low electricity consumption periods and provide electrical energy to relevant users or electrical equipment during high electricity consumption periods. The energy storage system provided by the embodiments of the present application can be any power system that requires an energy storage device.

[0057] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0058] In some embodiments, the energy storage device may include a cabinet body and one or more battery clusters, and the battery clusters are accommodated in the cabinet body.

[0059] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a total control module, a power distribution module, and a fire protection module.

[0060] As an example, the thermal management module may include a liquid cooling unit, and the liquid cooling unit provides a coolant for adjusting the temperature of battery cells to each battery device through pipelines.

[0061] As an example, the main control module may serve as the battery management unit of the battery cluster for monitoring and managing the battery cluster. The main control module may monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charge and discharge current, voltage, etc. of the battery cluster. The main control module includes an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch, and other modules.

[0062] As an example, the total control module may serve as the battery management unit of the energy storage device for monitoring and managing the energy storage device. The total control module may monitor information such as the current, voltage, power, state of charge, or temperature of the energy storage device. For example, it can control the charge and discharge current, voltage, etc. of the energy storage device. As an example, the total control module includes an insulation monitoring module IMM (Insulation Monitoring Module, IMM), a main battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (Ether Net, ETH), and a fiber optic conversion module, and other modules.

[0063] As an example, the fire protection system includes a control panel, detectors, alarm devices, etc., for detecting, alarming, or extinguishing fires in the energy storage system.

[0064] As an example, the power distribution device can be used to distribute power to the power consumption modules of the energy storage device.

[0065] In some embodiments, the energy storage system may include one or more energy storage devices and a power conversion device PCS (Power Converter System), and the power conversion device is used to connect between the power generation device and the energy storage device. The power generation device is used to generate electric energy, and the electric energy generated by the power generation device can be stored in the energy storage device through the power conversion device. As an example, the power generation device may specifically be a solar panel, a hydroelectric power generation device, a thermal power generation device, a wind power generation device, etc. Among them, the specific type of the power generation device is not limited in this application.

[0066] In some embodiments, the charging network may include a charging pile and an energy storage device. The charging pile is electrically connected to the energy storage device, and the energy storage device is used to supply electric energy to the charging pile. The charging pile and the battery device in the energy storage device are electrically connected through a cable, and the battery device can supply the electric energy stored in itself to the charging pile. The charging pile has one or more connectors, and the connectors are used to connect to the electrical device, so as to replenish energy to the electrical device.

[0067] The energy storage device may be located inside the charging pile (such as an integrated storage and charging machine) or outside the charging pile.

[0068] With the rapid development of renewable energy, the importance of energy storage systems in power supply has become increasingly prominent. There are many deficiencies in the layout and integration methods of traditional energy storage systems. The modularity of energy storage systems is relatively low, and it is difficult to perform management work such as operation and maintenance on energy storage systems.

[0069] Based on the above considerations, the embodiments of this application provide an energy storage system. By modularly arranging the energy storage system, it is convenient to manage the energy storage system. The energy storage system provided by the embodiments of this application may include an energy storage system framework and multiple energy storage modules. Each energy storage module includes any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet. Among them, the energy storage system framework includes at least two framework layers arranged along the gravity direction. Each framework layer has multiple accommodation spaces, and each accommodation space is used to accommodate a single energy storage module. The multiple energy storage modules are electrically connected through cables.

[0070] In the embodiments of this application, each energy storage module has its own accommodation space, and each energy storage module is relatively independent. When a certain energy storage module fails, it is convenient to quickly locate and replace, reducing the maintenance difficulty and cost, and improving the maintainability of the system. The hierarchical design of the energy storage system framework and the setting of multiple accommodation spaces in each framework layer improve the space utilization rate, can integrate more energy storage modules in a limited space, and reduce the floor area and construction cost. The energy storage modules are connected through cables, reducing signal interference and power loss, improving the stability and reliability of the system operation, and extending the service life of the energy storage system.

[0071] Figure 1 It is a structural diagram of the energy storage system according to the embodiment of the present application. Figure 2 It is another structural diagram of the energy storage system according to the embodiment of the present application. As Figure 1 shown in Figure 2 As shown, the energy storage system 10 may include an energy storage system frame 11 and a plurality of energy storage modules 12. Each energy storage module 12 includes an operation surface 121 and a heat dissipation surface 122. The operation surface 121 is used to operate the inside of the energy storage module 12, and the heat dissipation surface 122 is used for heat dissipation of the energy storage module 12. The operation surface 121 and the heat dissipation surface 122 are arranged opposite to each other. Each energy storage module 12 includes any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet. Among them, the energy storage system frame 11 includes at least two frame layers 111 arranged along the gravity direction. Each frame layer 111 has a plurality of accommodation spaces, and each accommodation space is used to accommodate a single energy storage module 12. The plurality of energy storage modules 12 are electrically connected by cables.

[0072] In some embodiments, each energy storage module 12 may include a battery cabinet, an electrical cabinet, or an energy storage converter cabinet. The battery cabinet stores electrical energy and provides energy storage capacity for the system. The electrical cabinet distributes, controls, and protects electrical energy, enabling the energy storage system 10 to operate safely and stably. The energy storage converter cabinet realizes the mutual conversion of AC and DC electrical energy to meet the electricity consumption requirements in different scenarios. These energy storage modules 12 can be flexibly combined according to actual needs and installed in the accommodation spaces of the energy storage system frame 11.

[0073] The energy storage system frame 11 is used to carry the energy storage modules 12. The material of the energy storage system frame 11 can be a high-strength and corrosion-resistant material. For example, metal materials such as stainless steel and aluminum alloy. These materials have a high strength-to-weight ratio, can not only bear the weight of the energy storage modules 12, but also reduce their own weight, reducing the difficulty of transportation and installation. At the same time, the corrosion resistance of the material enables the frame to maintain good mechanical properties under different environmental conditions, extending the service life of the energy storage system 10 and reducing the maintenance cost and safety risks caused by frame damage.

[0074] The energy storage system 10 can be used as an energy storage device in solar power plants and wind farms. Due to the intermittency and instability of solar and wind energy, the power generation will fluctuate with changes in light intensity and wind speed. This energy storage system 10 can store electrical energy when the power generation is excessive. For example, when the sunlight is strong during the day or the wind is strong at night, the excess power is stored in the battery cabinet. When the power generation is insufficient, it releases electrical energy to ensure stable power output, improve the consumption level of renewable energy, and enhance the power supply reliability. In places such as industrial parks, commercial areas, and large communities, a distributed energy system can be constructed. This energy storage system 10 can be combined with distributed power generation devices (such as small photovoltaic power plants, gas turbines, etc.) and electrical equipment on the user side to form a relatively independent energy supply unit. When the electrical energy generated by the distributed power generation device exceeds the user's own demand, the excess electrical energy can be stored in this energy storage system 10. When the power generation of the distributed power generation device is insufficient or the user's electricity demand suddenly increases, the energy storage system 10 releases electrical energy in a timely manner to meet the user's electricity demand, improving the self-sufficiency and reliability of the distributed energy system.

[0075] In some embodiments, a plurality of frame layers 111 are provided on the energy storage system frame 11. The plurality of frame layers 111 are vertically arranged along the gravity direction. The number of the frame layers 111 can be determined according to factors such as the usage requirements and the load-bearing capacity of the energy storage system frame 11, and the present application does not make any limitations.

[0076] Each frame layer 111 defines a plurality of accommodation spaces for accommodating the energy storage modules 12. The size and shape of the accommodation spaces can match the energy storage modules 12.

[0077] In some embodiments, each accommodation space is independent of each other, similar to the compartment design of a locker, which avoids mutual interference between the energy storage modules 12. When a certain energy storage module 12 fails, maintenance personnel can directly operate on this energy storage module 12 without affecting the normal operation of other energy storage modules 12, reducing the scope of the fault impact and enhancing the reliability of the energy storage system 10.

[0078] In some embodiments, the plurality of accommodation spaces are arranged in an orderly manner, making the layout of the energy storage system 10 more neat, facilitating daily inspections and maintenance by operation and maintenance personnel, identifying the positions and states of each energy storage module 12, improving the operation and maintenance efficiency, and also providing convenience for fault troubleshooting and repair. Based on the design of the plurality of accommodation spaces, the energy storage system 10 can achieve modular expansion. When it is necessary to increase the energy storage capacity or function, only the corresponding energy storage module 12 needs to be installed in the idle accommodation space without large-scale transformation of the entire system, reducing the difficulty and cost of system upgrade.

[0079] In some embodiments, each energy storage module 12 is connected by a cable. The type of the cable can be selected according to factors such as the power rating of the energy storage module 12, current and voltage characteristics, etc., which is not limited in this application. For example, for high-power energy storage modules 12, cables with a larger cross-sectional area of the wire core can be selected. Such cables have a small resistance, can carry a large current, and reduce the loss of electric energy during transmission and the phenomenon of cable heating.

[0080] The cable connection between multiple energy storage modules 12 needs to follow a topological structure to achieve power transmission and system control. Common topological structures include series connection, parallel connection, and series-parallel hybrid connection. Series connection can increase the output voltage to meet specific high-voltage power consumption requirements; parallel connection can increase the output current and improve the power supply capacity of the system. The cable connection can design a reasonable series-parallel combination method according to the specific requirements of the energy storage system 10.

[0081] In the embodiments of this application, each energy storage module 12 has its own accommodation space, and each energy storage module 12 is relatively independent. When a certain energy storage module 12 fails, it is convenient to quickly locate and replace, reducing the maintenance difficulty and cost, and improving the maintainability of the system. The hierarchical design of the energy storage system framework 11 and the setting of multiple accommodation spaces on each framework layer 111 improve the space utilization rate, can integrate more energy storage modules 12 in a limited space, and reduce the floor area and construction cost. The energy storage modules 12 are connected by cables, reducing signal interference and power loss, improving the stability and reliability of the system operation, and extending the service life of the energy storage system 10.

[0082] In some embodiments, the operation surface 121 is the main area where the operation and maintenance personnel operate on the inside of the energy storage module 12. To ensure the convenience and efficiency of operation and maintenance, various easy-to-operate components and interfaces can be equipped in this area.

[0083] Exemplarily, the operation surface 121 can be provided with multiple doors that are easy to open. The doors adopt an opening and closing structure and can be opened by 180°, providing sufficient operation space for the operation and maintenance personnel. The layout of the internal electrical components is planned, and all components that require daily maintenance, repair, and debugging, such as the connection ports of the battery pack, circuit breakers, control boards, etc., are centrally arranged near the operation surface 121, reducing the space obstruction during the operation of the operation and maintenance personnel, greatly reducing the operation difficulty, and improving the operation and maintenance efficiency.

[0084] In some embodiments, the heat dissipation surface 122 enables the energy storage module 12 to maintain a normal operating temperature. A large amount of heat is generated during the operation of the energy storage module 12. If it cannot be dissipated in time, it will cause the internal temperature of the module to be too high, affecting the performance of electrical components and even leading to safety problems. The heat dissipation surface 122 adopts a heat dissipation design. For example, the heat dissipation surface 122 can be equipped with heat dissipation fins, which are usually made of materials with good thermal conductivity such as aluminum alloy to increase the heat dissipation area and improve the heat dissipation efficiency. Another example is that the heat dissipation surface 122 can also be provided with a plurality of heat dissipation holes to form a ventilation channel, and by means of natural convection or forced air cooling, the air flow is accelerated to timely remove the heat generated inside the energy storage module 12.

[0085] The energy storage module 12 can also install a heat dissipation fan on the heat dissipation surface 122. When the internal temperature of the module reaches a set threshold, the fan automatically starts to enhance the heat dissipation effect, enabling the energy storage module 12 to operate within a suitable temperature range.

[0086] The operation surface 121 is disposed opposite to the heat dissipation surface 122, that is, these two surfaces are opposite to each other in spatial position and are distributed in a 180° reverse manner. Taking a server cabinet as an example, switches, indicator lights, operation display screens, etc. are provided on the front of the cabinet, which is convenient for operation and maintenance personnel to operate, and this is the operation surface 121; the back of the cabinet is covered with heat dissipation holes and heat dissipation fans for discharging the heat generated during the operation of the equipment, and this is the heat dissipation surface 122, and the front and back surfaces are opposite to each other.

[0087] In some embodiments, when multiple energy storage modules 12 are installed in the energy storage system frame 11, the operation surface 121 of each energy storage module 12 faces the same side, forming a centralized operation area, and the heat dissipation surface 122 faces the other side, constituting a unified heat dissipation area. This layout not only facilitates the centralized operation and maintenance of multiple energy storage modules 12 by operation and maintenance personnel, but also is conducive to building a unified heat dissipation channel within the energy storage system frame 11 to improve the overall efficiency of the heat dissipation system. In addition, this layout also facilitates the installation and arrangement in the energy storage system frame 11, is convenient for wiring and maintenance, and improves the reliability and maintainability of the entire energy storage system 10.

[0088] In the embodiments of the present application, the energy storage module 12 improves the maintainability and heat dissipation efficiency of the energy storage system 10 by disposing the operation surface 121 opposite to the heat dissipation surface 122. The operation surface 121 is equipped with a cabinet door convenient for operation and maintenance and electrical components with a centralized layout, reducing the operation and maintenance difficulty and the risk of errors; the heat dissipation surface 122 dissipates heat from the energy storage module 12 through heat dissipation fins, heat dissipation holes, heat dissipation fans, etc. The opposite setting of the two avoids mutual interference, enables smooth heat dissipation, makes the module structure more compact, improves the space utilization rate, and improves the reliability and maintainability of the energy storage system 10.

[0089] Figure 3Another structural diagram of the energy storage system according to the embodiments of the present application. As Figure 3 shown, each frame layer 111 of the energy storage system 10 further includes a fire protection component 1111, and the fire protection component 1111 is disposed on the heat dissipation surface 122 of the energy storage module 12 for dealing with the thermal runaway of the battery cabinet in the energy storage module 12 within the frame layer 111.

[0090] In some embodiments, the heat dissipation surface 122 is the area where the heat of the battery cabinet is concentratedly dissipated. When the battery cabinet has a thermal runaway, the temperature change in this area is the most significant, and the occurrence of the thermal runaway can be monitored in the first time. Therefore, the fire protection component 1111 is installed on the heat dissipation surface 122 of the energy storage module 12.

[0091] The space of the heat dissipation surface 122 is relatively open, which is convenient for the installation and layout of the fire protection component 1111, so that the fire protection medium can quickly and evenly cover all parts of the battery cabinet, inhibiting the spread of the thermal runaway.

[0092] The fire protection component 1111 may be composed of a detection device, a fire extinguishing device, a ventilation control device, etc.

[0093] The detection device includes a temperature sensor and a smoke detector. The temperature sensors can be distributed at positions on the heat dissipation surface 122 close to the battery cabinet, and can monitor the temperature changes on the surface of the battery cabinet and the surrounding environment in real time. The smoke detector is used to detect whether there is smoke generated. Once the smoke concentration exceeds the preset threshold, an alarm will be immediately issued.

[0094] The fire extinguishing device can adopt an aerosol fire extinguishing device, which can be quickly started and release fire extinguishing aerosol after receiving the thermal runaway signal. These aerosols can quickly diffuse throughout the frame layer 111, cover the surface of the battery cabinet, isolate oxygen, and effectively inhibit the combustion reaction, so as to achieve the purpose of extinguishing the fire.

[0095] When it is detected that a thermal runaway occurs, the ventilation control device will adjust the ventilation system within the frame layer 111. On the one hand, it discharges the generated harmful gases and smoke, and on the other hand, it avoids the excessive inflow of fresh air to prevent the fire from further spreading. The ventilation control device works in coordination with the fire extinguishing device, so that the fire extinguishing medium can be evenly distributed within the frame layer 111, improving the fire extinguishing effect.

[0096] In some embodiments, when thermal runaway occurs in the battery cabinet, the temperature sensors and smoke detectors on the heat dissipation surface 122 will quickly capture abnormal signals and transmit these signals to the central control system of the energy storage system 10. After receiving the signals, the central control system immediately activates the corresponding fire protection procedures, triggering the fire extinguishing device and the ventilation control device. The fire extinguishing device quickly releases the fire extinguishing medium to extinguish the fire and cool down the battery cabinet; the ventilation control device adjusts the operating state of the ventilation system according to the severity of the thermal runaway to ensure that the entire frame layer 111 is in a safe environment. At the same time, the central control system also sends the information of the thermal runaway to the remote monitoring center to notify relevant personnel for handling.

[0097] In the embodiments of the present application, by arranging the fire protection component 1111 on the heat dissipation surface 122 of the energy storage module 12, it is possible to achieve a rapid response and handling of the thermal runaway of the battery cabinet, greatly shortening the time from detecting the thermal runaway to taking fire protection measures and curbing the spread of the thermal runaway. The open space of the heat dissipation surface 122 provides good conditions for the installation and operation of the fire protection component 1111, improving the fire protection efficiency. This layout method matches the overall structure of the energy storage system 10, facilitating maintenance and management, and reducing the construction and operation costs of the fire protection system.

[0098] In the embodiments of the present application, the fire protection component 1111 is controlled by the electrical cabinet in the energy storage module 12 and powered by the battery cabinet.

[0099] In some embodiments, a set of control logic for the fire protection component 1111 is integrated inside the electrical cabinet. When the detection device of the fire protection component 1111 monitors that the temperature of the battery cabinet rises abnormally, or the smoke detector detects that the smoke concentration exceeds the preset threshold, these signals will be quickly transmitted to the electrical cabinet. After receiving the signals, the electrical cabinet analyzes and judges the signals. If it is confirmed that there is a risk of thermal runaway, it immediately activates the corresponding control instructions to control the actions of each device of the fire protection component 1111.

[0100] As the energy storage unit of the energy storage system 10, the battery cabinet provides a stable power supply for the fire protection component 1111. In the normal operating state, the battery cabinet transmits electrical energy to the fire protection component 1111 through the power supply line, enabling each device of the fire protection component 1111 to be in a normal operating state. When a power failure occurs in the mains or the energy storage system 10 encounters other emergency situations, the battery cabinet can continuously supply power to the fire protection component 1111, enabling the fire protection function to operate normally and preventing the fire protection system from failing due to a power outage.

[0101] In the embodiments of the present application, the electrical cabinet and the battery cabinet are closely combined with the fire protection component 1111, reducing the intermediate links of signal transmission and power supply, and shortening the response time of the fire protection component 1111. Once thermal runaway occurs, the fire protection component 1111 can quickly take fire extinguishing measures to contain the spread of the fire. The control and power supply of the fire protection component 1111 are realized by the electrical cabinet and the battery cabinet of the energy storage module 12 itself, reducing the dependence on the external power grid and control system, and improving the independence and reliability of the fire protection function of the entire energy storage system 10. The integrated design enables the control and power supply system of the fire protection component 1111 to be closely integrated with the energy storage module 12, facilitating unified maintenance and management, reducing the maintenance cost, and improving the work efficiency.

[0102] Continue to refer to Figure 3 , each frame layer 111 of the energy storage system 10 further includes a heat exchange component 1112, and the heat exchange component 1112 is disposed on the heat dissipation surface 122 of the energy storage module 12 for adjusting the temperature of the battery cabinet in the energy storage module 12 within the frame layer 111.

[0103] In some embodiments, the heat exchange component 1112 is disposed on the heat dissipation surface 122 of the energy storage module 12. As the area where the heat of the battery cabinet is concentrated and dissipated, the heat exchange component 1112 can sense the change of heat at this place in the first time. Once the temperature of the battery cabinet starts to rise, the heat exchange component 1112 can immediately start working and quickly transfer the heat out.

[0104] Exemplarily, when the battery cabinet is in a high-rate charge and discharge state, a large amount of heat will be generated in a short time. The heat exchange component 1112 on the heat dissipation surface 122 can quickly respond and take away the heat in time to prevent the temperature of the battery cabinet from rising rapidly.

[0105] The heat exchange component 1112 may include an air-cooled heat exchange component, a water-cooled heat exchange component or a heat pipe heat exchange component.

[0106] The air-cooled heat exchange component is mainly composed of a cooling fan and heat dissipation fins. The cooling fan is installed at a position on the heat dissipation surface 122 close to the battery cabinet. When the temperature sensor detects that the temperature of the battery cabinet exceeds the preset normal range, the airflow generated by the operation of the fan can accelerate the air flow speed. The heat dissipation fins are generally made of materials with good thermal conductivity such as aluminum alloy and are distributed on the heat dissipation surface 122 in a large area. The heat generated by the battery cabinet is transferred to the heat dissipation fins through heat conduction, and then the fast airflow generated by the fan passes over the heat dissipation fins, quickly taking away the heat, thereby realizing the temperature reduction operation of the battery cabinet.

[0107] A water-cooled heat exchange component generally includes a liquid-cooled plate, a coolant circulation pipeline, and a coolant pump. The liquid-cooled plate is closely attached to the heat dissipation surface 122 of the battery cabinet for installation, and a coolant flow channel is provided inside it. Generally, a liquid with a large specific heat capacity and excellent heat conduction performance is selected as the coolant, such as a water-ethylene glycol mixture. When the temperature of the battery cabinet rises, the coolant pump drives the coolant to circulate in the flow channel of the liquid-cooled plate. The heat of the battery cabinet is transferred to the liquid-cooled plate, and the coolant absorbs the heat and its temperature rises. Then, it flows through the circulation pipeline to an external radiator. At the radiator, the coolant exchanges heat with the external environment, dissipates the heat, and then flows back to the liquid-cooled plate after the temperature drops, thus forming a continuous cycle.

[0108] A heat pipe heat exchange component works by utilizing the high-efficiency heat conduction characteristics of heat pipes. A heat pipe consists of a sealed pipe shell, a wick, and a working medium. The evaporation section of the heat pipe is in close contact with the heat dissipation surface 122 of the battery cabinet, and the condensation section is installed in a heat dissipation area far from the battery cabinet. When the battery cabinet generates heat, the working medium in the evaporation section of the heat pipe absorbs the heat and vaporizes. The vapor quickly flows to the condensation section under the action of the pressure difference. At the condensation section, the vapor releases the heat and re-liquefies into a liquid. The liquefied working medium flows back to the evaporation section under the capillary action of the wick, and so on in a cycle, realizing the efficient transfer of heat from the heat dissipation surface 122 of the battery cabinet to the condensation section.

[0109] In the embodiments of the present application, by arranging the heat exchange component 1112 on the heat dissipation surface 122, the heat dissipation efficiency of the battery cabinet can be improved, and the operating temperature of the battery cabinet can be reduced. A stable and appropriate operating temperature helps to improve the charge and discharge efficiency of the battery and reduce the internal resistance of the battery. The heat exchange component 1112 can control the temperature of the battery cabinet, avoid damage to the battery due to overheating, reduce the generation of chemical reaction by-products inside the battery, and reduce the attenuation rate of the battery capacity, thereby significantly extending the service life of the battery, reducing the frequency of battery replacement, reducing the operating cost of the energy storage system 10, and improving the economic benefits and long-term stability of the energy storage system 10.

[0110] In the embodiments of the present application, the energy storage system framework 11 includes vertical beams. The vertical beams are arranged on the heat dissipation surface 122 and extend along the direction of gravity. The heat exchange component 1112 is arranged on the side of the vertical beam away from the energy storage system framework 11.

[0111] In some embodiments, the energy storage system framework 11 includes vertical beams. The vertical beams extend along the direction of gravity and are load-bearing components of the energy storage system 10.

[0112] To prevent the vertical beams from interfering with the operation range of the operation surface 121, the vertical beams can be arranged on the heat dissipation surface 122 of the energy storage module 12. This layout makes full use of the space of the heat dissipation surface 122, not only providing stable support for the installation of the heat exchange component 1112, but also not affecting the normal use of the operation surface 121 of the energy storage module 12.

[0113] In some embodiments, the vertical beam can be made of high-strength materials, such as high-quality steel or aluminum alloy, so that it can bear the weight of the energy storage module 12 and the additional weight of the heat exchange component 1112, while maintaining the overall stability of the energy storage system frame 11.

[0114] The heat exchange component 1112 is disposed on the side of the vertical beam away from the energy storage system frame 11, that is, the vertical beam is located between the heat dissipation surface 122 and the heat exchange component 1112, so that the heat exchange component 1112 can utilize natural ventilation or forced ventilation for heat exchange, and the heat exchange component 1112 does not occupy the accommodation space of the energy storage system frame 11.

[0115] The heat exchange component 1112 and the vertical beam can be connected through a mounting bracket, and the mounting bracket has good heat insulation performance, which can not only make the heat exchange component 1112 firmly installed, but also prevent heat from being conducted to the energy storage system frame 11 through the vertical beam, affecting the normal operation of other components.

[0116] In the embodiments of the present application, the vertical beam provides stable support for the energy storage system 10. The heat exchange component 1112 is installed on the side of the vertical beam away from the energy storage system frame 11, avoiding occupying additional space inside the energy storage system frame 11 and improving the space utilization rate of the energy storage system 10. The heat exchange component 1112 directly faces the external environment, can make full use of natural ventilation or forced ventilation, and greatly improves the heat dissipation efficiency. At the same time, the heat exchange component 1112 is installed on the vertical beam, making it closer to the heat dissipation surface 122 of the energy storage module 12, shortening the heat transfer path and further enhancing the heat dissipation effect.

[0117] In the embodiments of the present application, the heat exchange component 1112 is controlled by the electrical cabinet in the energy storage module 12 and powered by the battery cabinet.

[0118] In some embodiments, similar to the fire protection component 1111, a set of control logics for the heat exchange component 1112 is integrated inside the electrical cabinet. Based on the analysis of temperature data, the controller in the electrical cabinet formulates a regulation strategy according to the preset temperature threshold and regulation logic, so as to realize the control of the heat exchange component 1112. When the temperature of the battery cabinet is within the normal range, the controller will reduce the working power of the heat exchange component 1112 to keep it in a low-power operating state. Once the temperature sensor detects that the temperature of the battery cabinet rises and exceeds the preset upper threshold, the controller will quickly issue an instruction to increase the working intensity of the heat exchange component 1112.

[0119] Exemplarily, for an air-cooled heat exchange component, the controller will increase the rotation speed of the cooling fan to increase the air flow rate, so as to accelerate the heat dissipation; for a liquid-cooled heat exchange component, the controller will increase the rotation speed of the coolant pump to increase the circulation flow rate of the coolant, thereby enhancing the heat dissipation effect.

[0120] The battery cabinet, as the energy storage unit of the energy storage system 10, provides electrical energy for the heat exchange component 1112. In the normal operating state, the battery cabinet continuously transmits electrical energy to the heat exchange component 1112 through the power supply line to enable the normal operation of each component.

[0121] In some embodiments, when the heat exchange component 1112 is in a low-power operating state, the battery cabinet will reduce the output voltage and current to reduce the power consumption. When the heat exchange component 1112 needs to increase the working intensity to cope with the high temperature state of the energy storage module 12, the battery cabinet will provide sufficient electrical energy support for the heat exchange component 1112.

[0122] In the embodiments of the present application, the collaborative working mode among the electrical cabinet, the battery cabinet, and the heat exchange component 1112 shortens the signal transmission and control response time, and realizes the response and control of the heat exchange component 1112. Once the temperature of the battery cabinet is abnormal, the heat exchange component 1112 can react within an extremely short time, quickly adjust the working state, and curb the further rise of the battery cabinet temperature, so that the energy storage system 10 is in a safe and stable operating state.

[0123] In the embodiments of the present application, the energy storage system 10 further includes a busbar component. The busbar component is arranged between two adjacent frame layers 111, and the busbar component is used to connect the battery cabinets in the energy storage modules 12 in two adjacent frame layers 111 in parallel.

[0124] In some embodiments, the energy storage system 10 is composed of multiple frame layers 111. The busbar component is installed between two adjacent frame layers 111 and is used for connecting the energy storage modules 12 between the two frame layers 111.

[0125] In the energy storage system framework 11, a space and interface adapted for the installation of the busbar component are reserved between adjacent frame layers 111, so that the busbar component can electrically connect the energy storage modules 12 in the upper and lower layers. The space and interface adapted for the installation of the busbar component neither affect the installation and operation of the energy storage module 12 itself, nor can realize the electrical connection of the battery cabinets in adjacent frame layers 111 with the shortest path, reducing the cable length and transmission loss.

[0126] The busbar component may include an insulating housing and internal conductive components. The insulating housing can be made of a material with high strength and good flame retardancy, such as engineering plastics, which can prevent electric leakage and protect the internal conductive components. The internal conductive components can be made of copper or aluminum alloy with high conductivity. According to the number and layout of the battery cabinets, multiple connection ports are designed, and each connection port is interconnected with other ports through wires to achieve the parallel connection function of the battery cabinets.

[0127] In the embodiment of the present application, the busbar component realizes the parallel connection between the battery cabinets, making the output voltage and current of each battery cabinet consistent, reducing the possibility of current imbalance caused by improper connection, reducing the loss of the battery, and extending the battery life. In addition, the centralized connection method of the busbar component facilitates the unified monitoring and management of the energy storage system 10. When a fault occurs in a certain battery cabinet or connection part, it can be quickly located and troubleshot, improving the reliability and stability of the system.

[0128] In the embodiment of the present application, the energy storage system 10 further includes an insulating component, which includes a first insulating component and a second insulating component. The first insulating component is arranged between two adjacent frame layers 111 for insulating the two adjacent frame layers 111, and the second insulating component is arranged between the frame layer 111 and the ground for insulating the frame layer 111 and the ground.

[0129] In some embodiments, a first insulating component is arranged between two adjacent frame layers 111 to block the electrical connection between the adjacent frame layers 111 and prevent current from conducting between layers. The first insulating component can be made of a material with high strength and high insulation performance, such as epoxy resin board, ceramic insulating board, etc.

[0130] The shape and size of the first insulating component are designed according to the structure of the frame layer 111 and are closely attached to the edge of the frame layer 111 to achieve seamless insulation. During installation, the first insulating component can be firmly installed between two adjacent frame layers 111 through fixing devices such as screws and buckles to prevent its displacement or detachment.

[0131] In some embodiments, a second insulating component is arranged between the frame layer 111 and the ground to isolate the electrical connection between the frame layer 111 and the ground, avoid the leakage current from conducting through the ground, and protect personnel from electric shock. The second insulating component is made of a material with good insulation performance, wear resistance, and corrosion resistance, such as rubber insulating pad, insulating ceramic tile, etc. The size of the second insulating component is designed according to the floor area of the frame layer 111 so that it can cover the contact area between the frame layer 111 and the ground.

[0132] In the embodiments of the present application, by providing the first insulating member and the second insulating member, the electrical conduction path inside and outside the energy storage system 10 is blocked, the probability of electric leakage accidents is reduced, and the life safety of the operator and the normal operation of the equipment are protected.

[0133] Continuing to refer to Figure 3 , the energy storage system 10 further includes a support member 112, and the support member 112 is disposed between the second insulating member and the ground.

[0134] In some embodiments, a support member 112 is disposed between the second insulating member and the ground. The support member 112 can evenly disperse the weight of the energy storage system frame 11 to the ground, relieve the pressure on the second insulating member, and avoid damage to the insulating member caused by excessive local pressure.

[0135] The support member 112 can adapt to different ground conditions, level the energy storage system 10, ensure that the frame layer 111 is in a horizontal state, and prevent structural stress concentration caused by uneven ground.

[0136] The support member 112 can be made of high-strength and corrosion-resistant materials, such as stainless steel, high-strength aluminum alloy, etc. These materials have a high strength-to-weight ratio, can not only bear the weight of the energy storage system 10, but also effectively reduce their own weight, and reduce transportation and installation costs.

[0137] The structural design of the support member 112 is designed according to the capacity of the energy storage system 10 and the layout of the frame layer 111. Common structural forms include column type, plate type, and grid type. The column-type support member is composed of multiple vertical columns, and the number and distribution of the columns are designed according to the weight distribution of the frame layer 111. An enlarged base can also be provided at the bottom of the column to increase the contact area with the ground and improve the support stability.

[0138] The plate-type support member is a whole or spliced flat plate structure, and the thickness of the flat plate is selected according to the weight of the energy storage system 10. The plate-type support can provide a large area of support, effectively disperse the weight, and is suitable for scenarios with poor ground flatness.

[0139] The grid-type support member is composed of criss-cross beams, forming a grid-like structure. This structure reduces its own weight while meeting the support strength, and has good ventilation performance, and is suitable for energy storage systems 10 with high heat dissipation requirements.

[0140] The support member 112 and the second insulating member can be fixed by means such as bonding, bolt connection, or snap connection. During the connection process, an insulating gasket or insulating coating is used to prevent electrical conduction between the support member 112 and the second insulating member. The connection method between the support member 112 and the ground can be selected according to the ground material and bearing capacity. For a hard ground, expansion bolts can be used for fixing; for a soft ground, ground anchors or concrete foundations can be used for fixing.

[0141] In the embodiment of the present application, the support member 112 can evenly disperse the weight of the energy storage system 10 to the ground, which can reduce the possibility of structural deformation of the energy storage system frame 11 caused by uneven ground or excessive local pressure, and improve the stability of the energy storage system 10. By reducing the pressure on the second insulating member, the support member 112 extends the service life of the insulating member, reduces the risk of electric leakage, and improves the safety of the energy storage system 10.

[0142] Figure 4 It is a structural diagram of the cascaded energy storage system group of the embodiment of the present application. As Figure 4 shown, the present application also provides a cascaded energy storage system group 1, including a plurality of energy storage systems 10. Among them, the plurality of energy storage systems 10 are connected in series through an energy storage converter. The energy storage system 10 can include an energy storage system frame 11 and a plurality of energy storage modules 12. Each energy storage module 12 includes any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet. Among them, the energy storage system frame 11 includes at least two frame layers 111 arranged along the gravity direction. Each frame layer 111 has a plurality of accommodation spaces, and each accommodation space is used to accommodate a single energy storage module 12. The plurality of energy storage modules 12 are electrically connected through cables.

[0143] It should be understood that the energy storage system 10 can also include the energy storage system 10 in any of the above embodiments.

[0144] The energy storage converter can connect a plurality of energy storage systems 10 in series, and can also convert and control the electric energy of each energy storage system 10. Through the energy storage converter, according to actual needs, the charge and discharge states of each energy storage system 10 can be flexibly adjusted to realize the control of the entire cascaded energy storage system group 1.

[0145] In some embodiments, the plurality of energy storage systems 10 in the cascaded energy storage system group 1 can be connected with their operation surfaces 121 facing each other, or with their heat dissipation surfaces 122 facing each other, or shoulder-to-shoulder connected, and the remaining sides except the operation surface 121 and the heat dissipation surface 122 are connected to each other.

[0146] In the embodiment of the present application, multiple energy storage systems 10 are connected in series through energy storage converters to form a cascaded energy storage system group 1, which can improve the voltage level of the cascaded energy storage system group 1, meet the needs of large-scale energy storage and high-voltage applications, and broaden the application scope of the energy storage system 10.

[0147] Figure 5 Another structural diagram of the cascade energy storage system group of an embodiment of the present application is shown in FIG. Figure 6 FIG. 1 is another structural diagram of a cascade energy storage system group according to an embodiment of the present application. Figure 5 and Figure 6 As shown, the operation surfaces 121 of two adjacent energy storage systems 10 are arranged opposite to each other, and / or the heat dissipation surfaces 122 of two adjacent energy storage systems 10 are arranged opposite to each other.

[0148] In some embodiments, the operation surfaces 121 of two adjacent energy storage systems 10 are arranged relative to each other, which facilitates the operation and maintenance of the cascade energy storage system group 1. The operation surface 121 is an area for operation and maintenance personnel to operate the inside of the energy storage system 10, and it concentrates many key components such as control buttons, monitoring instruments, and maintenance interfaces. When the operation surfaces 121 of two adjacent energy storage systems 10 are arranged relative to each other, the operation and maintenance personnel can operate, inspect and maintain multiple energy storage systems 10 in a relatively concentrated space.

[0149] Specifically, when performing regular inspections on battery cabinets, adjusting parameters on electrical cabinets, or troubleshooting energy storage converter cabinets, the operation path is shortened, the operation and maintenance time is reduced, and the operation and maintenance efficiency is significantly improved.

[0150] In some embodiments, the heat dissipation surfaces 122 of two adjacent energy storage systems 10 are arranged relative to each other, which can improve the heat dissipation effect. During the operation of the energy storage system 10, equipment such as battery cabinets and energy storage inverter cabinets will generate a large amount of heat. If it cannot be dissipated in time, it will have a serious impact on the performance and life of the equipment. When the heat dissipation surfaces 122 of two adjacent energy storage systems 10 are arranged relative to each other, an efficient heat dissipation channel can be constructed between the two. Hot air can naturally rise between the relative heat dissipation surfaces 122, forming a smooth convection channel to accelerate the discharge of heat. If a forced air cooling system is configured, the relatively arranged heat dissipation surfaces 122 can enable the cooling air to flow more evenly through the energy storage system 10, taking away more heat, effectively reducing the operating temperature of the energy storage system 10, improving the stability and reliability of the equipment, and extending the service life of the equipment.

[0151] In practical applications, the operation surface 121 and the heat dissipation surface 122 may be arranged opposite to each other. According to the specific scale, site conditions and operation and maintenance requirements of the cascade energy storage system group 1, the operation surfaces 121 of some adjacent energy storage systems 10 and the heat dissipation surfaces 122 may be arranged opposite to each other.

[0152] In the embodiments of the present application, the operation surfaces 121 of two adjacent energy storage systems 10 are arranged oppositely, which simplifies the operation and maintenance process, reduces the operation time and labor intensity of operation and maintenance personnel, improves the accuracy and timeliness of operation and maintenance, and reduces the risk of equipment failure caused by untimely operation and maintenance. The opposite arrangement of the heat dissipation surfaces 122 optimizes the heat dissipation path, improves the heat dissipation efficiency, effectively reduces the operating temperature of the energy storage system 10, reduces equipment damage and safety accidents caused by overheating, and improves the stability and reliability of the energy storage system 10.

[0153] In the embodiments of the present application, two adjacent energy storage systems 10 are connected by a cable, and the cable is arranged at the top or bottom of the two adjacent energy storage systems 10 along the gravity direction.

[0154] In some embodiments, the cable is arranged at the top of two adjacent energy storage systems 10 along the gravity direction, that is, a cable is arranged at the top of two adjacent energy storage systems 10. The cable is made of materials with high strength and good flame retardancy, such as aluminum alloy or fireproof plastic, which can not only provide reliable support for the cable but also prevent the spread of fire.

[0155] The size of the cable can be designed according to the number and requirements of the energy storage systems 10, so that there is enough space for the cable to be laid without mutual extrusion, and the present application does not make any limitations.

[0156] During the installation of the cable, the connection cable between two adjacent energy storage systems 10 is neatly laid in the cable tray or wire groove at the top, and the cable is fixed by a cable fixing clip to prevent it from shaking or falling off.

[0157] In some embodiments, the cable is arranged at the bottom of two adjacent energy storage systems 10 along the gravity direction, and the requirements for the cable at the top are similar. When installing the cable, the connection cable is introduced into the cable tray or wire groove from the bottom of the energy storage system 10, and wiring and fixing are carried out.

[0158] In some embodiments, the top or bottom cable connection layout can be selected according to the specific installation environment, space limitation and maintenance requirements of the energy storage system 10. Specifically, for a place with relatively open space and low requirement for the utilization of the top space, the top cable connection layout can be preferentially selected to give full play to its advantages of space utilization and convenient maintenance; while for a scenario with relatively abundant bottom space and the need for concealed laying of the cable, the bottom cable connection layout is more suitable. At the same time, in some complex energy storage systems 10, the top and bottom layout methods can also be combined, and the laying position of the cable can be reasonably arranged according to the characteristics of different regions.

[0159] In the embodiments of the present application, the cables are centrally arranged at the top or bottom of adjacent energy storage systems 10, avoiding the random penetration of cables at other positions, effectively utilizing the vertical space, making the layout of the energy storage systems 10 more compact and reasonable, improving the space utilization rate, and reducing the floor area. Concentrating the cables at the top or bottom makes the maintenance and inspection of the cables more convenient.

[0160] According to some embodiments of the present application, referring to Figures 1 to 6 , the present application provides an energy storage system 10, which includes an energy storage system framework 11 and a plurality of energy storage modules 12. Each energy storage module 12 includes an operation surface 121 and a heat dissipation surface 122. The operation surface 121 is used to operate the interior of the energy storage module 12, and the heat dissipation surface 122 is used for the heat dissipation of the energy storage module 12. The operation surface 121 and the heat dissipation surface 122 are arranged opposite to each other. Each energy storage module 12 includes any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet; wherein, the energy storage system framework 11 includes at least two framework layers 111 arranged along the gravity direction. Each framework layer 111 has a plurality of accommodation spaces, and each accommodation space is used to accommodate a single energy storage module 12. The plurality of energy storage modules 12 are electrically connected by cables.

[0161] Each framework layer 111 of the energy storage system 10 further includes a fire protection component 1111. The fire protection component 1111 is arranged on the heat dissipation surface 122 of the energy storage module 12 and is used to handle the thermal runaway of the battery cabinet in the energy storage module 12 within the framework layer 111. The fire protection component 1111 is controlled by the electrical cabinet in the energy storage module 12 and is powered by the battery cabinet.

[0162] Each framework layer 111 of the energy storage system 10 further includes a heat exchange component 1112. The heat exchange component 1112 is arranged on the heat dissipation surface 122 of the energy storage module 12 and is used to adjust the temperature of the battery cabinet in the energy storage module 12 within the framework layer 111. The energy storage system framework 11 includes vertical beams, and the vertical beams are arranged on the heat dissipation surface 122 and extend along the gravity direction. The heat exchange component 1112 is arranged on the side of the vertical beam away from the energy storage system framework 11. The heat exchange component 1112 is controlled by the electrical cabinet in the energy storage module 12 and is powered by the battery cabinet.

[0163] The energy storage system 10 further includes a busbar component, and the busbar component is arranged between two adjacent framework layers 111 and is used to connect the battery cabinets in the energy storage modules 12 in two adjacent framework layers 111 in parallel.

[0164] The energy storage system 10 further includes an insulation component, a first insulation component and a second insulation component. The first insulation component is arranged between two adjacent framework layers 111 and is used to insulate between two adjacent framework layers 111. The second insulation component is arranged between the framework layer 111 and the ground and is used to insulate between the framework layer 111 and the ground.

[0165] The energy storage system 10 further includes a support member 112 disposed between the second insulating member and the ground.

[0166] Multiple energy storage systems 10 are connected in series through an energy storage converter to form a cascaded energy storage system group 1. The operating surfaces 121 of two adjacent energy storage systems 10 are disposed opposite to each other, and / or the heat dissipation surfaces 122 of two adjacent energy storage systems 10 are disposed opposite to each other. Two adjacent energy storage systems 10 are connected by a cable, and the cable is disposed at the top or bottom of two adjacent energy storage systems 10 along the gravity direction.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage system, characterized in that, Comprising: A plurality of energy storage modules (12), each of the energy storage modules (12) including an operation surface (121) and a heat dissipation surface (122), the operation surface (121) being used for operating the interior of the energy storage module (12), the heat dissipation surface (122) being used for heat dissipation of the energy storage module (12), the operation surface (121) and the heat dissipation surface (122) being arranged opposite to each other, and each of the energy storage modules (12) including any one of a battery cabinet, an electrical cabinet, and an energy storage converter cabinet; An energy storage system framework (11), the energy storage system framework (11) including at least two framework layers (111) arranged along the gravity direction, each of the framework layers (111) having a plurality of accommodation spaces, each accommodation space being used for accommodating a single energy storage module (12), and the plurality of energy storage modules (12) being electrically connected by cables.

2. The energy storage system according to claim 1, wherein Each of the framework layers (111) of the energy storage system further includes a fire protection component (1111), the fire protection component (1111) being arranged on the heat dissipation surface (122) of the energy storage module (12) and being used for dealing with the thermal runaway of the battery cabinet in the energy storage module (12) within the framework layer (111).

3. The energy storage system according to claim 2, wherein, The fire protection component (1111) is controlled by the electrical cabinet in the energy storage module (12) and is powered by the battery cabinet.

4. The energy storage system according to claim 2, wherein Each of the framework layers (111) of the energy storage system further includes a heat exchange component (1112), the heat exchange component (1112) being arranged on the heat dissipation surface (122) of the energy storage module (12) and being used for regulating the temperature of the battery cabinet in the energy storage module (12) within the framework layer (111).

5. The energy storage system according to claim 4, characterized in that, The energy storage system framework (11) includes vertical beams, the vertical beams being arranged on the heat dissipation surface (122) and extending along the gravity direction, and the heat exchange component (1112) being arranged on the side of the vertical beam away from the energy storage system framework (11).

6. The energy storage system according to claim 4, characterized in that, The heat exchange component (1112) is controlled by the electrical cabinet in the energy storage module (12) and is powered by the battery cabinet.

7. The energy storage system according to any one of claims 1 to 6, characterized in that, The energy storage system further includes a busbar component, the busbar component being arranged between two adjacent framework layers (111), and the busbar component being used for paralleling the battery cabinets in the energy storage modules (12) in two adjacent framework layers (111).

8. The energy storage system according to any one of claims 1 to 6, characterized in that, The energy storage system further includes an insulation component, the insulation component including a first insulation component and a second insulation component, the first insulation component being arranged between two adjacent framework layers (111) and being used for insulating between two adjacent framework layers (111), and the second insulation component being arranged between the framework layer (111) and the ground and being used for insulating between the framework layer (111) and the ground.

9. The energy storage system according to claim 8, wherein The energy storage system further includes a support member (112), the support member (112) being arranged between the second insulation component and the ground.

10. A cascaded energy storage system group, characterized in that, Comprising: A plurality of energy storage systems as described in any one of claims 1 to 9, wherein, the plurality of energy storage systems are connected in series through an energy storage converter.

11. The cascaded energy storage system group according to claim 10, characterized in that, The operation surfaces (121) of two adjacent energy storage systems are arranged opposite to each other, and / or The heat dissipation surfaces (122) of two adjacent energy storage systems are arranged oppositely.

12. The cascaded energy storage system group according to claim 10 or 11, characterized in that, Two adjacent energy storage systems are connected by a cable which is arranged at the top or bottom of the two adjacent energy storage systems along the gravity direction.

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