Energy storage device and energy storage system

Abstract

The embodiment of the application discloses a kind of energy storage device and energy storage system, it is related to the field of energy storage.The energy storage device includes support structure, battery device and insulating member, battery device is contained in the containing space of support structure;Insulating member includes the first insulation part and the second insulation part oppositely arranged along the first direction, the first insulation part or the second insulation part is connected with support structure;It also includes the third insulation part and the fourth insulation part between the first insulation part and the second insulation part, the third insulation part connects the first insulation part and the second insulation part, the fourth insulation part surrounds the outer periphery of the third insulation part, and is connected with the outer periphery of the third insulation part.The energy storage device can improve insulation performance.

Description

Technical Field

[0001] This application relates to the field of energy storage, and more specifically, to an energy storage device and an energy storage system. Background Technology

[0002] Energy storage devices are widely used in grid peak shaving, renewable energy consumption, and distributed energy systems. However, electrical safety is a significant concern when energy storage systems are in operation. Leakage can not only damage equipment but also potentially lead to serious safety accidents. Utility Model Content

[0003] This application provides an energy storage device and an energy storage system that can improve the insulation performance of the energy storage device.

[0004] In a first aspect, this application provides an energy storage device, including a support structure, the support structure including a receiving space; a battery device, the battery device being received within the receiving space; an insulating member, the insulating member including a first insulating portion and a second insulating portion disposed opposite to each other along a first direction, the first insulating portion or the second insulating portion being connected to the support structure; the insulating member further includes a third insulating portion and a fourth insulating portion located between the first insulating portion and the second insulating portion, the third insulating portion connecting the first insulating portion and the second insulating portion, the fourth insulating portion surrounding the outer periphery of the third insulating portion and being connected to the outer periphery of the third insulating portion.

[0005] In this embodiment, by adding a fourth insulating part to the third insulating part, the creepage distance of the insulating member is increased. For current to leak, it must travel a longer path along the surface of the insulating member. This longer creepage distance effectively reduces the risk of leakage, improves insulation performance, and reduces the possibility of short circuits, electric shocks, and other safety accidents caused by leakage, thus ensuring the stable operation of the energy storage device and the safety of users. Simultaneously, the insulating member also provides support for the energy storage device, better adapting to external factors such as vibration and impact that the device may experience during operation, maintaining the stability of the insulating member, and improving the overall performance and service life of the energy storage device.

[0006] In some embodiments of the first aspect, the insulating member includes a plurality of fourth insulating portions, which are parallel to the first insulating portion and spaced apart along a first direction.

[0007] In this embodiment, multiple fourth insulating portions are arranged parallel to the first insulating portion and spaced apart along the first direction. Working in conjunction with the first, second, and third insulating portions, they construct a more complete three-dimensional insulation system, covering the potential electrical risk area between the battery device and the supporting structure, greatly reducing the risk of short circuits and leakage. The multiple fourth insulating portions arranged spaced apart along the first direction fully utilize the space of the energy storage device, improving insulation protection capabilities without increasing the size of the energy storage device, and contributing to the compact design of the energy storage device.

[0008] In some embodiments of the first aspect, the cross-section of the fourth insulating portion along the first direction is axially symmetrical about the first direction and / or the second direction; wherein the second direction is perpendicular to the first direction.

[0009] In this embodiment, the symmetrical design of the fourth insulating part along the first direction cross-section helps to distribute the electric field evenly in the corresponding direction, reducing the possibility of excessively high local electric field strength, improving the insulation performance of the fourth insulating part in both vertical and horizontal directions, reducing the risk of electrical breakdown, and enhancing the electrical safety of the energy storage device. Simultaneously, it can also evenly disperse external forces from different directions, effectively avoiding stress concentration, improving the structure's resistance to deformation and damage, and extending the service life of the insulating components.

[0010] In some embodiments of the first aspect, the insulating member is located between the supporting structure and the ground, and / or the insulating member is located between two adjacent supporting structures along the first direction.

[0011] In this embodiment of the application, by setting insulating components between the support structure and the ground, as well as insulating components between two adjacent support structures along the first direction, the electrical conduction paths inside and outside the energy storage system are blocked, reducing the probability of leakage accidents and protecting the life safety of operators and the normal operation of equipment.

[0012] In some embodiments of the first aspect, the connection between the first insulating part and / or the second insulating part and the support structure includes at least one of the following connection methods: welding, riveting, or connector connection.

[0013] In this embodiment, various connection methods, such as welding, riveting, and connectors, can be selected based on factors such as the material properties of the insulating components and supporting structures, the structural design of the energy storage device, and the actual operating environment, to meet connection requirements under different operating conditions. The high strength of welding, the stability of riveting, and the flexibility of connectors complement each other. Through reasonable selection or combination, the reliability of the connection between the insulating components and the supporting structure can be enhanced, preventing displacement or detachment of the insulating components due to loose connections during the operation of the energy storage device, thus ensuring the continuous stability of insulation performance. Simultaneously, the selection of multiple connection methods allows the energy storage device to be applied to a wider range of insulating component and supporting structure material combinations, expanding the application scope of the energy storage device.

[0014] In some embodiments of the first aspect, the creepage distance between the support structure and the ground, and / or between two adjacent support structures along the first direction, via an insulating member is greater than or equal to 800 mm, and the dimension of the insulating member along the first direction is greater than or equal to 350 mm.

[0015] In this embodiment, by specifying that the creepage distance of the insulating components between the supporting structure and the ground, and between adjacent supporting structures along the first direction, is not less than 800 mm, and that the dimension of the insulating components along the first direction is not less than 350 mm, the electrical safety and structural stability of the energy storage device are improved. The longer creepage distance effectively increases the difficulty of current leakage, reduces the risk of leakage, and prevents safety accidents caused by leakage; the dimension of the insulating components in the vertical direction ensures the insulation performance and structural strength in the direction of gravity, ensuring the stable and reliable operation of the energy storage device under complex operating conditions.

[0016] In some embodiments of the first aspect, the material of the insulating member includes thermosetting materials, plastics, or rubber.

[0017] In this embodiment, the selection of thermosetting materials, plastics, and rubber materials allows the insulation components to be designed according to the actual working environment and performance requirements of the energy storage device. Thermosetting materials can be used in high-temperature environments, plastics can be used when lightweighting is required, and rubber materials are suitable for scenarios with high requirements for cushioning and weather resistance, significantly improving the environmental adaptability and overall performance of the energy storage device. Different materials correspond to different processing technologies and costs, allowing for reasonable material selection based on the cost budget and performance requirements of the energy storage device.

[0018] In some embodiments of the first aspect, the energy storage device further includes a positioning component located between the insulating member and the ground, the positioning component being used to determine the installation position of the insulating member on the support structure.

[0019] In this embodiment, the positioning component can quickly and accurately determine the installation position of the insulating component on the support structure, reducing the probability of installation deviation and ensuring that the installation position of the insulating component meets design requirements. The well-defined positioning structure simplifies and streamlines the installation process, allowing for rapid completion and shortening assembly time. Accurate installation position ensures that the insulating component isolates the battery device from the support structure and the ground, reducing safety hazards such as electrical short circuits and leakage caused by installation errors, and providing strong protection for the safe operation of the energy storage device.

[0020] In some embodiments of the first aspect, the positioning component includes a positioning beam and a plurality of bases, the plurality of bases being connected one-to-one with a plurality of insulating components of the energy storage device, the bases being located between the insulating components and the ground, and the positioning beam connecting the plurality of bases to determine the position of the plurality of bases.

[0021] In this embodiment, the combination design of the positioning beam and multiple bases enables the synchronous positioning of multiple insulating components, ensuring that the relative positions of each insulating component meet design requirements and improving the integrity and effectiveness of the overall insulation protection system of the energy storage device. By uniformly determining the base positions through the positioning beam, the installation process for multiple insulating components is simplified, production efficiency is improved, and labor costs are reduced.

[0022] In some embodiments of the first aspect, the base is connected to a first insulating portion or a second insulating portion of an insulating member, and the connection method includes at least one of the following: welding, riveting, or connector connection.

[0023] In this embodiment, welding, riveting, and connector connection are among the various methods that can be used to flexibly select the optimal connection scheme based on the material type of the insulating component and the base, the operating conditions of the energy storage device, and the structural design requirements, thereby improving the connection adaptability.

[0024] In some embodiments of the first aspect, the energy storage device further includes an insulator located between the support structure and the positioning assembly, and / or, the insulator is located between two adjacent support structures along the first direction.

[0025] In this embodiment of the application, by setting insulators between the support structure and the positioning component, or between adjacent support structures, or by adopting a combined layout, potential electrical connection paths can be cut off, forming an insulation protection network, improving the energy storage device's ability to resist external electrical interference and internal electrical crosstalk, and enabling the energy storage device to operate safely and stably.

[0026] Secondly, this application provides an energy storage system, including the energy storage device described in the first aspect. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the energy storage device according to an embodiment of this application;

[0028] Figure 2 This is a structural diagram of the insulating component according to an embodiment of this application;

[0029] Figure 3 This is another structural diagram of the energy storage device according to an embodiment of this application;

[0030] Figure 4 This is another structural diagram of the energy storage device according to an embodiment of this application;

[0031] Figure 5 This is a partial structural diagram of the energy storage device according to an embodiment of this application;

[0032] Figure 6 This is another structural diagram of the energy storage device according to an embodiment of this application.

[0033] The accompanying drawings are not drawn to scale.

[0034] Figure label:

[0035] 1-Energy storage device; 10-Battery device; 20-Supporting structure; 30-Insulating component; 31-First insulating part; 32-Second insulating part; 33-Third insulating part; 34-Fourth insulating part; 40-Positioning assembly; 41-Positioning beam; 42-Base; 50-Insulator; 60-Electrical cabinet. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0038] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0042] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0043] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0044] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0045] In some embodiments, the battery device may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or in a mixed configuration via a busbar.

[0046] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0047] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0048] In some embodiments, the battery device may be a battery pack, which includes a battery housing and one or more individual battery cells housed within the battery housing.

[0049] As an example, a battery cell assembly can be a battery module, which can be housed in a battery housing by fixing the battery module in the battery housing.

[0050] As an example, battery cell assemblies can also be housed in a battery housing by directly fixing multiple battery cells to the battery housing.

[0051] As an example, the battery housing may include a first battery housing and a second battery housing portion. The first battery housing portion and the second battery housing portion are fastened together to form a closed space inside the battery housing for housing individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first battery housing may be a top cover or a bottom plate.

[0052] As an example, the battery enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are respectively connected to the frame, so that the interior of the battery enclosure forms an enclosed space to house individual battery cells.

[0053] In some embodiments, the energy storage device may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0054] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0055] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0056] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0057] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0058] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0059] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0060] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0061] As an example, a fire protection system includes control panels, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage systems.

[0062] As an example, the power distribution unit can be used to distribute power to the power modules of the energy storage device.

[0063] In some embodiments, the energy storage system may include one or more energy storage devices and a power converter system (PCS), which is connected between the power generation device and the energy storage device. The power generation device generates electrical energy, which can be stored in the energy storage device through the power converter. For 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. The specific type of power generation device is not limited in this application.

[0064] In some embodiments, the charging network may include charging piles and energy storage devices. The charging piles are electrically connected to the energy storage devices, which provide power to the charging piles. The charging piles are electrically connected to a battery device in the energy storage device via cables, and the battery device can provide its stored electrical energy to the charging piles. The charging piles have one or more connectors for connecting to electrical devices, thereby enabling the charging of power to the devices.

[0065] Energy storage devices can be located inside the charging pile (e.g., an integrated energy storage and charging unit) or outside the charging pile.

[0066] Energy storage devices are widely used in grid peak shaving, renewable energy consumption, and distributed energy systems. However, electrical safety issues between the battery devices and the supporting structure are prominent during the operation of energy storage systems. Leakage can not only damage the equipment but also potentially lead to serious safety accidents.

[0067] Based on the above considerations, this application provides an energy storage device that can improve the insulation performance of the energy storage device. The energy storage device provided in this application includes a support structure, a battery device, and an insulating member. The support structure includes a receiving space; the battery device is received within the receiving space; the insulating member includes a first insulating portion and a second insulating portion disposed opposite to each other along a first direction, and the first insulating portion or the second insulating portion is connected to the support structure; the insulating member further includes a third insulating portion and a fourth insulating portion located between the first insulating portion and the second insulating portion, the third insulating portion connecting the first insulating portion and the second insulating portion, and the fourth insulating portion surrounding and connecting to the outer periphery of the third insulating portion.

[0068] In this embodiment, by adding a fourth insulating part to the third insulating part, the creepage distance of the insulating member is increased. For current to leak, it must travel a longer path along the surface of the insulating member. This longer creepage distance effectively reduces the risk of leakage, improves insulation performance, and reduces the possibility of short circuits, electric shocks, and other safety accidents caused by leakage, thus ensuring the stable operation of the energy storage device and the safety of users. Simultaneously, the insulating member also provides support for the energy storage device, better adapting to external factors such as vibration and impact that the device may experience during operation, maintaining the stability of the insulating member, and improving the overall performance and service life of the energy storage device.

[0069] Figure 1 This is a structural diagram of an energy storage device according to an embodiment of this application. Figure 1 As shown, the interior of the energy storage device 1 is a hollow structure, which can include multiple compartments, for example, to accommodate multiple electrical cabinets.

[0070] In some embodiments, the energy storage device 1 may include a plurality of electrical cabinets 60, and each electrical cabinet 60 may include a cabinet body and at least one electrical box.

[0071] The battery cabinet 60 is used to encapsulate one or more battery devices 10. Multiple battery devices 10 can be connected in parallel, in series, or in a series-parallel connection.

[0072] In some embodiments, the storage unit may include a battery compartment for accommodating batteries. In addition, the interior of the energy storage device 1 may be divided into multiple functional compartments according to actual needs. Each functional compartment contains other functional equipment components for managing or assisting the operation of the multiple batteries, such as a busbar, a main control unit, a thermal management unit, etc.

[0073] In some embodiments, the thermal management component may include an air conditioning assembly, a fan assembly, a water-cooled pipe, etc., which can be used to perform thermal management on the interior of the energy storage device 1 to adjust the temperature inside the energy storage device 1.

[0074] In some embodiments, the energy storage device 1 may further include a fire protection system for fire protection treatment of the energy storage device 1, such as alarm, cooling or fire extinguishing.

[0075] In some embodiments, the energy storage device 1 can be a regular cuboid structure, which facilitates the fixed placement and transportation of the energy storage device 1.

[0076] Figure 2 This is a structural diagram of the insulating component according to an embodiment of this application. Figure 3 This is another structural diagram of the energy storage device according to an embodiment of this application. Figure 2 and Figure 3 As shown, the energy storage device includes a support structure 20, a battery device 10, and an insulating member 30. The support structure 20 includes a receiving space; the battery device 10 is received within the receiving space; the insulating member 30 includes a first insulating part 31 and a second insulating part 32 disposed opposite to each other along a first direction, and the first insulating part 31 or the second insulating part 32 is connected to the support structure 20; the insulating member 30 also includes a third insulating part 33 and a fourth insulating part 34 located between the first insulating part 31 and the second insulating part 32, the third insulating part 33 connecting the first insulating part 31 and the second insulating part 32, and the fourth insulating part 34 surrounding the outer periphery of the third insulating part 33 and connected to the outer periphery of the third insulating part 33.

[0077] In some embodiments, the support structure 20 is the basic frame of the energy storage device 1, and an internal housing space is formed therein. The size and shape of the housing space are precisely designed according to the specifications of the battery device 10, which can provide a stable installation environment for the battery device 10 and can buffer external shocks and vibrations to a certain extent, thus protecting the battery device 10.

[0078] The battery device 10 serves as the structure for energy storage and release in the energy storage device 1, and is housed within the receiving space of the supporting structure 20. The battery device 10 can be composed of multiple battery cells connected in series, parallel, or series-parallel, and can provide corresponding voltage and capacity according to actual application requirements.

[0079] The insulating member 30 in this embodiment includes a first insulating portion 31 and a second insulating portion 32 disposed opposite to each other along a first direction. The first direction is the direction of gravity of the battery device 10. The first insulating portion 31 or the second insulating portion 32 is connected to the support structure 20. This connection can be made by various methods such as adhesive bonding, snap-fit ​​connection, or bolt connection to ensure the firmness and stability of the connection between the insulating member 30 and the support structure 20, thereby enabling the insulating member 30 to reliably perform its insulating function.

[0080] To ensure a stable connection between the insulating component 30 and the supporting structure 20, the first insulating part 31 and the second insulating part 32 can be plate-like structures, connecting surface-to-surface with the supporting structure 20. This increases the contact area between the two components, disperses the stress at the connection point, reduces local stress concentration, and thus improves the stability of the connection.

[0081] For ease of description, this application defines three reference directions based on the energy storage system, such as... Figure 2 As shown, the direction of gravity of the insulating member 30 is the Z direction, i.e., the first direction; Figure 2 The direction of extension of the middle and third insulating parts 33 is the Y direction; the direction perpendicular to the X direction and perpendicular to the Y direction is the X direction. Among them, the X direction, Y direction and Z direction are perpendicular to each other.

[0082] The insulating member 30 also includes a third insulating part 33 and a fourth insulating part 34 located between the first insulating part 31 and the second insulating part 32. The third insulating part 33 connects the first insulating part 31 and the second insulating part 32, and the fourth insulating part 34 surrounds the outer periphery of the third insulating part 33 and is connected to the outer periphery of the third insulating part 33. To improve the support capacity of the third insulating part 33 for the battery device 10 and the support structure 20, the third insulating part 33 can be a plate-like structure and perpendicular to the first insulating part 31, so that the supporting force of the third insulating part 33 can be used entirely in the vertical direction to support the energy storage device 1.

[0083] In some embodiments, the fourth insulating portion 34 surrounds and connects to the outer periphery of the third insulating portion 33, that is, the fourth insulating portion 34 is sleeved on the third insulating portion 33, and the outer periphery of the third insulating portion 33 consists of the remaining surfaces excluding those connected to the first insulating portion 31 and the second insulating portion 32. Specifically, taking the third insulating portion 33 as a plate-like structure as an example, the third insulating portion 33 includes two first surfaces connected to the first insulating portion 31 and the second insulating portion 32, and four remaining second surfaces. The fourth insulating portion 34 is connected to each of the second surfaces. The dimension of the fourth insulating portion 34 along the X direction is larger than the dimension of the third insulating portion 33 along the X direction, and the dimension of the fourth insulating portion 34 along the Y direction is larger than the dimension of the third insulating portion 33 along the Y direction.

[0084] The fourth insulating part 34 can be used to increase the creepage distance of the insulating member 30. Creepage distance refers to the shortest distance along the surface of the insulating material between two conductive parts. Specifically, in electrical equipment, when conductors with different potentials exist, such as the energy storage device 1 and the ground, the air on the surface of the insulating material may be ionized due to the electric field, forming a conductive path. This phenomenon is called creepage. The creepage distance is to prevent this from happening, allowing the insulating material to withstand a certain voltage without surface discharge. Because the third insulating part 33 surrounds the fourth insulating part 34, when current leaks from the third insulating part 33 to the fourth insulating part 34, it cannot pass directly but must meander along the insulating surface. Under the same voltage environment, the difficulty of current leakage increases significantly. According to the principle of creepage distance, the longer and more tortuous the path, the better the insulation performance and the lower the possibility of leakage. Therefore, the fourth insulating part 34 can extend the creepage distance of the insulating member 30, thereby improving the overall insulation performance of the insulating member 30 and reducing the probability of malfunctions or safety accidents caused by leakage.

[0085] It should be understood that the insulating member 30 is located below the supporting structure 20 and, in addition to its insulating function, can also provide support for the energy storage device 1.

[0086] In this embodiment, by adding a fourth insulating part 34 to the third insulating part 33, the creepage distance of the insulating member 30 is increased. For current to leak, it must travel a longer path along the surface of the insulating member 30. This longer creepage distance effectively reduces the risk of leakage, improves insulation performance, and reduces the possibility of short circuits, electric shocks, and other safety accidents caused by leakage, thus ensuring the stable operation of the energy storage device 1 and the safety of the user. Simultaneously, the insulating member 30 also provides support for the energy storage device 1, better adapting to the influence of external factors such as vibration and impact that the energy storage device 1 may experience during operation, maintaining the stability of the insulating member 30, and improving the overall performance and service life of the energy storage device 1.

[0087] In this embodiment of the application, the insulating member 30 includes a plurality of fourth insulating portions 34, which are parallel to the first insulating portion and are spaced apart along the first direction.

[0088] In some embodiments, a plurality of fourth insulating portions 34 are parallel to the first insulating portion, which can extend the possible path for current leakage from the battery device 10. When leakage current attempts to be conducted through the surface of the insulating member 30, it needs to bypass the plurality of spaced fourth insulating portions 34 in sequence. Each time it bypasses a fourth insulating portion 34, it is equivalent to adding a creepage path, thereby significantly increasing the overall creepage distance. According to electrical safety principles, a longer creepage distance can effectively reduce the risk of leakage and reduce the possibility of safety accidents such as short circuits and fires caused by leakage.

[0089] The number and layout of the fourth insulating part 34 can be determined according to the insulation performance requirements of the energy storage device 1. For example, in some energy storage power station scenarios with high electrical safety requirements, the number of the fourth insulating part 34 can be increased and the spacing distance can be reduced to obtain a larger creepage distance and higher insulation reliability. In some small energy storage devices with limited space and relatively moderate insulation performance requirements, the number of the fourth insulating part 34 can be appropriately reduced to optimize space utilization while ensuring basic insulation performance.

[0090] In this embodiment, multiple fourth insulating portions 34 are parallel to the first insulating portion and work in conjunction with the other insulating portions to construct a more complete three-dimensional insulation system, covering the potential electrical risk area between the battery device 10 and the support structure 20, greatly reducing the risk of short circuits and leakage. The multiple fourth insulating portions 34 are arranged at intervals along the first direction, making full use of the space of the energy storage device 1. Without increasing the volume of the energy storage device 1, the insulation protection capability is improved, contributing to the compact design of the energy storage device 1.

[0091] In this embodiment, the cross-section of the fourth insulating portion 34 along the first direction is axially symmetrical about the first direction and / or the second direction, wherein the second direction is perpendicular to the first direction.

[0092] In some embodiments, the cross-section of the fourth insulating portion 34 along the first direction is axially symmetrical about the first direction; that is, on the cross-section in the Z direction, the structure on both sides is identical with the straight line containing the Z direction as the axis of symmetry. This symmetrical structure enables the fourth insulating portion 34 to evenly distribute the force to both sides when subjected to external forces such as vertical pressure and vibration. The axially symmetrical structure effectively avoids excessive local stress, preventing deformation, cracking, etc., thereby ensuring the continuous effectiveness of the insulation function. At the same time, the symmetrical structure helps to evenly distribute the electric field in the vertical direction, reducing the possibility of electrical faults caused by electric field concentration.

[0093] In some embodiments, the cross-section of the fourth insulating portion 34 along the first direction is axially symmetrical about the second direction. For example, in the X direction, the fourth insulating portion 34 is symmetrical vertically with the straight line containing the X direction as the axis of symmetry. The symmetrical structure helps to form a uniform electric field distribution, avoids local electric field concentration, thereby reducing the possibility of the insulating material being broken down, improving insulation performance, and reducing the risk of leakage.

[0094] It should be understood that the second direction can also be the Y direction.

[0095] In this embodiment, the symmetrical design of the fourth insulating part 34 along the first direction cross-section helps to distribute the electric field evenly in the corresponding direction, reducing the possibility of excessively high local electric field strength, improving the insulation performance of the fourth insulating part 34 in the vertical and horizontal directions, reducing the risk of electrical breakdown, and enhancing the electrical safety of the energy storage device 1. Simultaneously, it can also evenly disperse external forces from different directions, effectively avoiding stress concentration, improving the structure's resistance to deformation and damage, and extending the service life of the insulating component 30.

[0096] Figure 4 This is another structural diagram of the energy storage device according to an embodiment of this application. Figure 4 As shown, the insulating member 30 is located between the support structure 20 and the ground, and / or the insulating member 30 is located between two adjacent support structures 20 along the first direction.

[0097] In some embodiments, the support structures 20 can be stacked in a first direction to improve the space utilization of the energy storage device 1. The insulating member 30 can be disposed between two adjacent support structures 20 to insulate between the two adjacent support structures 20. The insulating member 30 can also be disposed between the support structure 20 and the ground to insulate between the support structure 20 and the ground.

[0098] In some embodiments, specifically, an insulating member 30 is provided between the support structure 20 and the ground to isolate the electrical connection between the support structure 20 and the ground, preventing leakage current from being conducted through the ground and protecting personnel from electric shock. In practical applications, stray currents, static electricity, or other electrical interference may exist on the ground. The insulating member 30 can prevent these external electrical factors from affecting the battery device 10 inside the energy storage device 1, and prevent current leakage to the ground from causing safety accidents.

[0099] In some embodiments, specifically, an insulating member 30 is provided between adjacent support structures 20. The insulating member 30 between adjacent support structures 20 can effectively isolate electrical crosstalk between different layers or modules and prevent interlayer short circuits.

[0100] In this embodiment of the application, by setting an insulating member 30 between the support structure 20 and the ground, and an insulating member 30 between two adjacent support structures 20 along the first direction, the electrical conduction path inside and outside the energy storage system is blocked, reducing the probability of leakage accidents and protecting the life safety of operators and the normal operation of equipment.

[0101] In this embodiment, the connection between the first insulating part 31 and / or the second insulating part 32 and the support structure 20 includes at least one of the following connection methods: welding, riveting, or connector connection.

[0102] In some embodiments, the first insulating part 31 and / or the second insulating part 32 can be connected to the support structure 20 by welding. This method is suitable when both the insulating member 30 and the support structure 20 are made of weldable materials, such as the connection of thermosetting materials to a metal support structure. Welding can form a strong and continuous connection interface between the two, providing high-strength connection force. During the welding process, by controlling the welding parameters, the insulating material and the metal surface can form a good fusion, reducing the possibility of insulation performance degradation due to welding heat while meeting the connection strength requirements. The welding method provides high connection reliability, reducing the impact of vibration and shock during the operation of the energy storage device 1 and minimizing the risk of insulation failure due to loose connections.

[0103] In some embodiments, the first insulating part 31 and / or the second insulating part 32 can be connected to the support structure 20 by riveting. Riveting is suitable for situations where high connection strength is required and welding is not appropriate. Fixing the first insulating part 31 or the second insulating part 32 to the support structure 20 with rivets is relatively simple and has minimal thermal impact on the materials. Before riveting, corresponding riveting holes need to be machined on the insulating member 30 and the support structure 20, and then the rivets are passed through the holes and riveted. Riveting provides a stable mechanical connection force, and the number and distribution of rivets can be adjusted according to the actual stress conditions, improving the connection stability between the insulating member 30 and the support structure 20.

[0104] In some embodiments, the first insulating part 31 and / or the second insulating part 32 can be connected to the support structure 20 using connectors. Common connectors include bolts, nuts, screws, clips, etc. For example, corresponding mounting holes are provided on the first insulating part 31 or the second insulating part 32 and the support structure 20, respectively. The connection between the two is achieved by passing a bolt through the mounting hole and tightening it with a nut. Connector connections facilitate disassembly and maintenance. When it is necessary to inspect the energy storage device 1 or replace the insulating component 30, the connector can be quickly disassembled to complete the operation.

[0105] In this embodiment, multiple connection methods can be combined according to the specific structure and usage conditions of the energy storage device 1. For example, welding and riveting can be combined in parts with high load-bearing capacity to ensure sufficient connection strength between the insulating component 30 and the supporting structure 20; connectors can be used in parts that are easy to disassemble and maintain to ensure reliable connection between the insulating component 30 and the supporting structure 20 while improving the maintainability and flexibility of the energy storage device 1.

[0106] In this embodiment, various connection methods, such as welding, riveting, and connectors, can be selected based on factors such as the material properties of the insulating component 30 and the supporting structure 20, the structural design of the energy storage device 1, and the actual operating environment, to meet the connection requirements under different working conditions. The high strength of welding, the stability of riveting, and the flexibility of connectors complement each other. By rationally selecting or combining them, the connection reliability between the insulating component 30 and the supporting structure 20 can be enhanced, preventing the insulating component 30 from shifting or falling off due to loose connections during the operation of the energy storage device 1, thus ensuring the continuous stability of insulation performance. At the same time, the selection of multiple connection methods allows the energy storage device 1 to be applicable to more types of insulating component 30 materials and supporting structure 20 material combinations, expanding the application range of the energy storage device 1.

[0107] In this embodiment of the application, the creepage distance between the support structure 20 and the ground, and / or between two adjacent support structures 20 along the first direction, through the insulating member 30 is greater than or equal to 800 mm, and the dimension of the insulating member 30 along the first direction is greater than or equal to 350 mm.

[0108] In some embodiments, the dimensions of the insulating member 30 need to be determined based on the output voltage of the energy storage device 1. The spatial distance and surface distance along the vertical direction of the insulation direction must both meet the dimensional requirements to achieve the insulation requirements. When the output voltage of the energy storage device 1 is greater than or equal to 35 kV, the dimensions of the insulating member 30 must meet the following requirements: the creepage distance between the supporting structure 20 and the ground, and / or between two adjacent supporting structures 20 along the first direction, through the insulating member 30 must be greater than or equal to 800 mm, and the dimension of the insulating member 30 along the first direction must be greater than or equal to 350 mm.

[0109] For example, the dimensions of the insulating member 30 must meet the requirement that the creepage distance between the supporting structure 20 and the ground, and / or between two adjacent supporting structures 20 along the first direction, through the insulating member 30 can be 800mm, 850mm, 900mm, 950mm, or 1000mm. The dimensions of the insulating member 30 along the first direction can be 350mm, 450mm, 500mm, 550mm, 600mm, or 650mm.

[0110] The length of the creepage distance directly affects the possibility of current leakage along the insulation surface. A longer creepage distance can significantly reduce the risk of leakage, effectively prevent safety accidents such as short circuits and electric shocks caused by leakage, and ensure the personal safety of operators and the stable operation of energy storage device 1.

[0111] In this embodiment, by specifying that the creepage distance of the insulating member 30 between the support structure 20 and the ground, and between adjacent support structures 20 along the first direction, is not less than 800 mm, and that the dimension of the insulating member 30 along the first direction is not less than 350 mm, the electrical safety and structural stability of the energy storage device 1 are improved. The longer creepage distance effectively increases the difficulty of current leakage, reduces the risk of leakage, and prevents safety accidents caused by leakage; the dimension of the insulating member 30 in the vertical direction ensures the insulation performance and structural strength in the direction of gravity, ensuring that the energy storage device 1 operates stably and reliably under complex working conditions.

[0112] In this embodiment, the material of the insulating member 30 includes thermosetting materials, plastics, or rubber.

[0113] In some embodiments, thermosetting materials undergo an irreversible chemical reaction upon heating, pressurization, or the addition of a curing agent, forming a robust three-dimensional network structure with high-temperature resistance. This allows them to maintain stable physical and chemical properties during the operation of the energy storage device 1, even when the battery heats up or the ambient temperature rises, preventing material softening, deformation, or a decrease in insulation performance due to high temperatures. Common thermosetting materials such as sheet molding compounds, phenolic resins, and epoxy resins possess good mechanical strength and electrical insulation properties, making them suitable for manufacturing insulating parts that require high mechanical stress and insulation performance. This ensures that the insulating component 30 can be firmly connected to the supporting structure 20 or the ground and reliably insulated during long-term use.

[0114] In some embodiments, plastics possess excellent processability and can be manufactured into complex shapes of insulating parts through various processes such as injection molding and extrusion. For example, plastic materials such as polycarbonate and polyvinyl chloride have high insulation resistance and dielectric strength, effectively isolating current conduction between the energy storage device 1 and the ground, or between energy storage devices 1 themselves. Simultaneously, plastic materials are lightweight, enabling a lightweight design of the energy storage device 1. Furthermore, some plastic materials also possess good chemical corrosion resistance, reducing the possibility of chemical corrosion caused by battery electrolyte leakage and extending the service life of the insulating components 30.

[0115] In some embodiments, the rubber has good flexibility and elasticity, which can effectively buffer the vibration and impact generated during the operation of the battery device 10, reducing the risk of insulation layer damage caused by mechanical stress. For example, silicone rubber, EPDM rubber, etc., not only have insulation properties, but also weather resistance and aging resistance, and can maintain a stable insulation effect under different ambient temperature and humidity conditions.

[0116] In this embodiment, the selection of thermosetting materials, plastics, and rubber materials allows the insulation component 30 to be designed according to the actual working environment and performance requirements of the energy storage device 1. Thermosetting materials can be used in high-temperature environments, plastics can be used when lightweighting is required, and rubber materials are suitable for scenarios with high requirements for cushioning and weather resistance, significantly improving the environmental adaptability and overall performance of the energy storage device 1. Different materials correspond to different processing technologies and costs, allowing for reasonable material selection based on the cost budget and performance requirements of the energy storage device 1.

[0117] In this embodiment of the application, the energy storage device further includes a positioning component 40, which is located between the insulating member 30 and the ground. The positioning component 40 is used to determine the installation position of the insulating member 30 on the support structure 20.

[0118] In some embodiments, the energy storage device 1 needs to be equipped with multiple insulating members 30. The number and layout of the insulating members 30 need to be determined according to the size of the energy storage device 1 and the supporting force of the insulating members 30. In this case, the positioning component 40 can be used to help determine the installation position of the insulating members 30 on the support structure 20.

[0119] For example, the positioning component 40 can employ a positioning pin and positioning hole mating method. The positioning pin is fixedly installed on the bottom of the support structure 20 or the ground, and the positioning hole is formed on the first insulating part 31 and the second insulating part 32. When the insulating component 30 is installed, the positioning pin is inserted into the positioning hole, thereby determining the installation position of the insulating component 30, so that the relative position between the insulating component 30 and the support structure 20 meets the design requirements.

[0120] By setting up the positioning component 40, during the production process of the energy storage device 1, the installers can quickly and accurately install the insulating component 30 into the predetermined position, significantly improving the installation efficiency.

[0121] In this embodiment, the positioning component 40 can quickly and accurately determine the installation position of the insulating component 30 on the support structure 20, reducing the probability of installation deviation and ensuring that the installation position of the insulating component 30 meets the design requirements. The clear positioning structure makes the installation process simpler and more efficient, allowing for rapid completion of the installation work and shortening assembly time. Accurate installation position ensures that the insulating component 30 can isolate the electrical connection between the battery device 10 and the support structure 20 and the ground, reducing safety hazards such as electrical short circuits and leakage caused by installation errors, and providing strong protection for the safe operation of the energy storage device 1.

[0122] Figure 5 This is a partial structural diagram of an energy storage device according to an embodiment of this application. Figure 5As shown, the positioning component 40 includes a positioning beam 41 and multiple bases 42. The multiple bases 42 are connected one-to-one with multiple insulating components 30 of the energy storage device 1. The bases 42 are located between the insulating components 30 and the ground. The positioning beam 41 connects the multiple bases 42 to determine the position of the multiple bases 42.

[0123] In some embodiments, the positioning component 40 can achieve its positioning function through a positioning beam 41 and a base 42. The positioning beam 41 connects multiple bases 42 and can be made of high-strength metal or engineering plastic, possessing good rigidity and resistance to deformation. The bases 42 have mounting holes or mounting grooves for connecting with the positioning beam 41, so that multiple bases 42 form an integral positioning frame under the constraint of the positioning beam 41. By pre-determining the installation position of the positioning beam 41 on the ground, the position of all bases 42 can be determined at once, thereby achieving precise positioning of multiple insulating components 30.

[0124] Specifically, the shape and size of each base 42 are designed according to the structural characteristics of the corresponding insulating component 30. Its top is provided with a connection structure, such as a slot or threaded hole, to accommodate the first insulating part 31 or the second insulating part 32 of the insulating component 30. It can be securely connected to the insulating component 30 via snap-fit ​​connections, bolt fixation, or other methods. The bottom part of the base 42 that contacts the ground can be designed with anti-slip textures or a rubber pad to enhance the stability of the base 42 on the ground and prevent displacement during installation.

[0125] In some embodiments, the number and size of the positioning can be determined based on the number of bases 42 and the size of the support structure 20, and this application does not limit them.

[0126] The structure of the positioning beam 41 can be flexibly adjusted according to the layout of the energy storage device 1. For example, in a large energy storage power station, the positioning beam 41 can be designed as a grid or frame structure, connecting multiple bases 42 through crisscrossing beams to improve positioning accuracy in all directions; while in a small energy storage device 1 with limited space, the positioning beam 41 can be simplified into a straight structure, connecting only the bases 42 at key locations, thus meeting positioning requirements while saving space and material costs.

[0127] With the positioning component 40 in place, during the installation of the energy storage device 1, the installer only needs to fix the positioning beam 41 on the ground according to the design requirements, connect the base 42 to the positioning beam 41, and install the corresponding insulating component 30 on the base 42 to quickly complete the positioning and installation of multiple insulating components 30.

[0128] In this embodiment, the combined design of the positioning beam 41 and multiple bases 42 enables the synchronous positioning of multiple insulating components 30, ensuring that the relative positions of each insulating component 30 meet design requirements and improving the integrity and effectiveness of the overall insulation protection system of the energy storage device 1. By uniformly determining the positions of the bases 42 through the positioning beam 41, the installation process of multiple insulating components 30 is simplified, production efficiency is improved, and labor costs are reduced.

[0129] In this embodiment of the application, the base 42 is connected to the first insulating part 31 or the second insulating part 32 of the insulating member 30, and the connection method includes at least one of the following: welding, riveting or connecting piece connection.

[0130] In some embodiments, the base 42 is connected to the first insulating portion 31 or the second insulating portion 32 of the insulating member 30. Specifically, the first insulating portion 31 of the insulating member 30 is connected to the base 42, and the second insulating portion 32 is connected to the support structure 20, or the first insulating portion 31 of the insulating member 30 is connected to the support structure 20, and the second insulating portion 32 is connected to the base 42.

[0131] The connection method is similar to that between the insulating component 30 and the supporting structure 20. The first insulating part 31 or the second insulating part 32 can be connected to the base 42 by welding. By controlling the welding parameters, the insulating material and the surface of the base 42 can form a good fusion. The welding connection has high reliability and can reduce the impact of vibration and impact during the operation of the energy storage device 1, and reduce the risk of insulation failure due to loose connection.

[0132] In some embodiments, the first insulating part 31 or the second insulating part 32 can be connected to the base 42 by riveting. The first insulating part 31 or the second insulating part 32 is fixed to the base 42 by rivets. Before riveting, corresponding riveting holes need to be machined on the insulating member 30 and the base 42, and then the rivets are passed through the holes and riveted. Riveting provides a stable mechanical connection force, and the number and distribution of rivets can be adjusted according to the actual stress conditions, improving the connection stability between the insulating member 30 and the base 42.

[0133] In some embodiments, the first insulating part 31 or the second insulating part 32 and the base 42 can also be connected by a connector. Common connectors include bolts, nuts, screws, clips, etc. For example, corresponding mounting holes are provided on the first insulating part 31 or the second insulating part 32 and the base 42, respectively, and the connection between the two is achieved by passing a bolt through the mounting hole and tightening it with a nut.

[0134] In this embodiment of the application, multiple connection methods can be combined according to the specific structure and usage conditions of the energy storage device 1.

[0135] In this embodiment, welding, riveting, and connecting with connectors are among the various methods that can be used to flexibly select the optimal connection scheme based on the material type of the insulating component 30 and the base 42, the operating conditions of the energy storage device 1, and the structural design requirements, thereby improving the connection adaptability.

[0136] Figure 6 This is another structural diagram of the energy storage device according to an embodiment of this application. Figure 6 As shown, the energy storage device also includes an insulator 50, which is located between the support structure 20 and the positioning component 40, and / or, the insulator 50 is located between two adjacent support structures 20 along the first direction.

[0137] In some embodiments, the support structure 20 may also be disposed on the insulator 50. Specifically, the energy storage device 1 may include a plurality of insulators 50. The plurality of insulators 50 may be mounted on the support structure 20 by means of the positioning component 40, just like the insulating component 30, or mounted between two adjacent support structures 20 along the first direction.

[0138] The insulator 50 is fixedly connected to or detachably connected to the surface of the support structure 20 along the gravity direction. For example, the insulator 50 is bolted to the surface of the support structure 20 along the gravity direction. Specifically, a flange is provided on the side of the insulator 50 facing the support structure 20, and the insulator 50 is bolted to the support structure 20 through this flange.

[0139] It should be understood that the material of the insulator 50 in the embodiments of this application may be set to one of the following: alumina, zirconium oxide, boron nitride, glass, polypropylene, polyethylene, polyimide, and polytetrafluoroethylene.

[0140] When the insulator 50 is located between the support structure 20 and the positioning assembly 40, it can block any electrical conduction path that may exist between the support structure 20 and the ground. Since the positioning assembly 40 is in direct contact with the ground, stray currents or static electricity may be introduced in some cases. The insulator 50 can isolate the support structure 20 from these potential sources of electrical interference. While achieving its insulation function, the insulator 50 can also enhance the connection stability of the support structure 20 to a certain extent.

[0141] When the insulator 50 is located between two adjacent support structures 20 along the first direction, it can be used to solve the problem of electrical crosstalk between different layers of support structures 20 in a multi-layer or modular energy storage device 1. In large-scale energy storage systems, multiple support structures 20 are stacked along the first direction, and electrical interference may occur between the layers due to factors such as electromagnetic coupling.

[0142] It should be understood that the energy storage device 1 can achieve insulation and support functions through the combined action of the insulating member 30 and the insulator 50, or it can achieve insulation and support functions through either the insulating member 30 or the insulator 50.

[0143] In this embodiment of the application, by setting insulators 50 between the support structure 20 and the positioning component 40, or between adjacent support structures 20, or by adopting a combined layout, potential electrical connection paths can be cut off, forming an insulation protection network, thereby improving the ability of the energy storage device 1 to resist external electrical interference and internal electrical crosstalk, so that the energy storage device 1 can operate safely and stably.

[0144] This application also provides an energy storage system, including an energy storage device 1. The energy storage device includes a support structure 20, a battery device 10, and an insulating member 30. The support structure 20 includes a receiving space. The battery device 10 is received within the receiving space. The insulating member 30 includes a first insulating portion 31 and a second insulating portion 32 disposed opposite to each other along a first direction. The first insulating portion 31 or the second insulating portion 32 is connected to the support structure 20. The insulating member 30 also includes a third insulating portion 33 and a fourth insulating portion 34 located between the first insulating portion 31 and the second insulating portion 32. The third insulating portion 33 connects the first insulating portion 31 and the second insulating portion 32. The fourth insulating portion 34 surrounds the outer periphery of the third insulating portion 33 and is connected to the outer periphery of the third insulating portion 33.

[0145] It should be understood that the energy storage device 1 may also include the energy storage device 1 in any of the above embodiments.

[0146] According to some embodiments of this application, see Figures 2 to 6 This application provides an energy storage device including a support structure 20, a battery device 10, and an insulating member 30. The support structure 20 includes a receiving space; the battery device 10 is received within the receiving space; the insulating member 30 includes a first insulating portion 31 and a second insulating portion 32 disposed opposite to each other along a first direction, and the first insulating portion 31 or the second insulating portion 32 is connected to the support structure 20; the insulating member 30 further includes a third insulating portion 33 and a fourth insulating portion 34 located between the first insulating portion 31 and the second insulating portion 32, the third insulating portion 33 connecting the first insulating portion 31 and the second insulating portion 32, and the fourth insulating portion 34 surrounding the outer periphery of the third insulating portion 33 and connected to the outer periphery of the third insulating portion 33. The insulating member 30 includes a plurality of fourth insulating portions 34, which are parallel to the first insulating portion and are spaced apart along the first direction. The cross-section of the fourth insulating portions 34 along the first direction is axially symmetrical about the first direction and / or the second direction.

[0147] The insulating member 30 is located between the supporting structure 20 and the ground, and / or, the insulating member 30 is located between two adjacent supporting structures 20 along the first direction. The connection between the first insulating part 31 and / or the second insulating part 32 and the supporting structure 20 includes at least one of the following connection methods: welding, riveting, or connector connection. The creepage distance between the supporting structure 20 and the ground, and / or between two adjacent supporting structures 20 along the first direction, through the insulating member 30 is greater than or equal to 800 mm, and the dimension of the insulating member 30 along the first direction is greater than or equal to 350 mm. The material of the insulating member 30 includes thermosetting materials, plastics, or rubber.

[0148] The energy storage device 1 also includes a positioning assembly 40, which is located between the insulating member 30 and the ground. The positioning assembly 40 is used to determine the installation position of the insulating member 30 on the support structure 20. The positioning assembly 40 includes a positioning beam 41 and a plurality of bases 42. The plurality of bases 42 are connected one-to-one with the plurality of insulating members 30 of the energy storage device 1. The bases 42 are located between the insulating member 30 and the ground, and the positioning beam 41 connects to the bases 42 to determine the position of the bases 42. The bases 42 are connected to the first insulating part 31 or the second insulating part 32 of the insulating member 30, and the connection method includes at least one of the following: welding, riveting, or connector connection.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: A support structure (20) includes a receiving space; A battery device (10) is housed within the housing space; An insulating member (30) includes a first insulating portion (31) and a second insulating portion (32) disposed opposite to each other along a first direction, wherein the first insulating portion (31) or the second insulating portion (32) is connected to the support structure (20); the insulating member (30) further includes a third insulating portion (33) and a fourth insulating portion (34) located between the first insulating portion (31) and the second insulating portion (32), wherein the third insulating portion (33) connects the first insulating portion (31) and the second insulating portion (32), and the fourth insulating portion (34) surrounds the outer periphery of the third insulating portion (33) and is connected to the outer periphery of the third insulating portion (33).

2. The energy storage device according to claim 1, characterized in that, The insulating member (30) includes a plurality of fourth insulating portions (34), which are parallel to the first insulating portion and are spaced apart along the first direction.

3. The energy storage device according to claim 2, characterized in that, The cross section of the fourth insulating part (34) along the first direction is axially symmetrical about the first direction and / or the second direction; The second direction is perpendicular to the first direction.

4. The energy storage device according to claim 1, characterized in that, The insulating member (30) is located between the support structure (20) and the ground, and / or the insulating member (30) is located between two adjacent support structures (20) along the first direction.

5. The energy storage device according to claim 4, characterized in that, The connection between the first insulating part (31) and / or the second insulating part (32) and the support structure (20) includes at least one of the following connection methods: welding, riveting or connector connection.

6. The energy storage device according to any one of claims 1 to 5, characterized in that, The creepage distance between the support structure (20) and the ground, and / or between two adjacent support structures (20) along the first direction, via the insulating member (30) is greater than or equal to 800 mm, and the dimension of the insulating member (30) along the first direction is greater than or equal to 350 mm.

7. The energy storage device according to any one of claims 1 to 5, characterized in that, The materials of the insulating component (30) include thermosetting materials, plastics, or rubber.

8. The energy storage device according to any one of claims 1 to 5, characterized in that, The energy storage device also includes a positioning component (40) located between the insulating member (30) and the ground, and the positioning component (40) is used to determine the installation position of the insulating member (30) on the support structure (20).

9. The energy storage device according to claim 8, characterized in that, The positioning component (40) includes a positioning beam (41) and a plurality of bases (42). The plurality of bases (42) are connected one-to-one with the plurality of insulating components (30) of the energy storage device. The bases (42) are located between the insulating components (30) and the ground. The positioning beam (41) connects the plurality of bases (42) to determine the position of the plurality of bases (42).

10. The energy storage device according to claim 9, characterized in that, The base (42) is connected to the first insulating part (31) or the second insulating part (32) of the insulating member (30), and the connection method includes at least one of the following: welding, riveting or connecting piece connection.

11. The energy storage device according to claim 10, characterized in that, The energy storage device further includes an insulator located between the support structure (20) and the positioning component (40), and / or, the insulator located between two adjacent support structures (20) along the first direction.

12. An energy storage system, characterized in that, Includes the energy storage device as described in any one of claims 1 to 11.

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