Energy storage device, energy storage system and charging network

Abstract

The utility model is suitable for the technical field of energy storage, and provides an energy storage device, an energy storage system and a charging network. The container comprises a plurality of beam bodies, the plurality of beam bodies are connected with one another to form a frame structure and define a containing space, and the containing space is used for containing the single batteries; a first cavity is formed in the beam body, and an energy absorption structure is contained in the first cavity. According to the energy storage device provided by the embodiment of the invention, the first cavity is formed in the beam body of the container, and the energy absorption structure is arranged in the first cavity, so that the energy generated by collision is absorbed through the first cavity and the energy absorption structure, the energy transmitted to the battery device is reduced, and the damage of the container to the battery device is relieved; and the protection capability of the container on the battery device is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage, and particularly relates to an energy storage device, an energy storage system and a charging network. BACKGROUND

[0002] The energy storage system is an electric energy storage and transfer device, has a battery placed inside, has the characteristics of convenient installation and transportation, high integration, small floor area and good expansibility, and is an important component of distributed energy, smart grid and energy internet development in the field of energy storage.

[0003] At present, there is a container type energy storage device convenient for transportation and installation, but it is easy to be bumped during transportation and installation, and thus the battery device and other structures in the container are easy to be damaged. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the application provides an energy storage device, an energy storage system and a charging network, which can alleviate the problem that the container is easy to be bumped and damage the battery device.

[0005] In the first aspect, the embodiments of the application provide an energy storage device, comprising:

[0006] a battery device; a container comprising a plurality of beam bodies, the plurality of beam bodies being connected to each other to form a frame structure and surrounding an accommodation space for accommodating battery monomers; a first cavity is arranged in the beam body, and an energy absorption structure is arranged in the first cavity.

[0007] In the technical scheme of the embodiment, the first cavity is arranged in the beam body of the container, and the energy absorption structure is arranged in the first cavity, so as to absorb the energy generated by the collision through the first cavity and the energy absorption structure, reduce the energy transmitted to the battery device, and thus alleviate the damage of the container to the battery device and improve the protection capability of the container to the battery device.

[0008] In some embodiments, the energy absorption structure comprises a non-Newtonian fluid.

[0009] In the technical scheme of the embodiment, the energy absorption structure comprises a non-Newtonian fluid. When the non-Newtonian fluid is subjected to an external force, it will undergo a phase change and absorb and dissipate a large amount of energy. Therefore, the non-Newtonian fluid in the beam body can absorb and dissipate part of the energy generated by the collision when the beam body is subjected to the collision, so as to reduce the collision energy transmitted to the battery device and alleviate the damage of the battery device.

[0010] In some embodiments, the energy absorption structure comprises any one of a polyethylene solution, a polyacrylamide solution and a polyvinyl chloride solution.

[0011] The technical scheme of the embodiment provides some specific selections of the energy absorption structure, so that the energy absorption structure can better absorb the energy generated by the collision.

[0012] In some embodiments, the first cavity is provided with a first reinforcing rib connected to the beam body.

[0013] In the technical scheme of the embodiment, the first reinforcing rib is arranged in the first cavity to improve the strength of the beam body through the first reinforcing rib, thereby improving the protection capability of the container for the battery device.

[0014] In some embodiments, the first reinforcing rib divides the first cavity into at least two first sub-cavities, and at least one first sub-cavity contains an energy-absorbing structure.

[0015] In the technical scheme of the embodiment, the first reinforcing rib divides the first cavity into a plurality of first sub-cavities, so that each first sub-cavity has a certain energy-absorbing effect, thereby further improving the energy-absorbing effect of the beam body; meanwhile, in the case that part of the first sub-cavities are deformed due to collision, the other first sub-cavities that are not deformed can still continue to have the energy-absorbing effect, and the other first reinforcing ribs that are not deformed can still provide support performance, that is, the arrangement can make the beam body not completely fail in the case of deformation.

[0016] In some embodiments, the first sub-cavities are closed cavities, so that the first sub-cavities are not connected to each other.

[0017] In the technical scheme of the embodiment, the first sub-cavities are closed and not connected to each other, and in the case that part of the first sub-cavities are deformed due to collision, the arrangement can make the energy-absorbing structures in the first sub-cavities that are not deformed difficult to leak, thereby making the first sub-cavities that are not deformed better continue to protect the battery device, and thereby better make the beam body not completely fail in the case of deformation.

[0018] In some embodiments, the first reinforcing rib forms a honeycomb structure in the first cavity, and the first sub-cavities are prismatic cavities.

[0019] The technical scheme of the embodiment provides specific structures of the first reinforcing ribs and the first sub-cavities, so that the first reinforcing ribs can better support the beam body, and the first sub-cavities can better absorb the energy generated by the collision.

[0020] In some embodiments, the plurality of beam bodies include a plurality of first beam bodies and a plurality of second beam bodies, the plurality of first beam bodies are connected to each other to form a frame structure and enclose an accommodation space, the second beam bodies are connected to the first beam bodies, the plurality of second beam bodies are used to divide the accommodation space into a plurality of sub-spaces, the battery device is accommodated in the sub-space, and the first cavity is arranged in the second beam body.

[0021] The technical scheme of the embodiment makes the beam body include a first beam body and a second beam body, and makes the second beam body form a sub-space for accommodating the battery device in the frame structure, that is, the second beam body is relatively close to the battery device; the first cavity is located in the second beam body, that is, the energy-absorbing structure is also located in the second beam body, so as to protect the battery device through the second beam body, and meanwhile the cost of the whole container can be reduced.

[0022] In some embodiments, the beam body is a metal structural member, and the beam body is a rigid structural member.

[0023] The technical scheme of the embodiment makes the beam body a metal structural member, so that the beam body can have higher strength to better provide support performance and protect the battery device.

[0024] In some embodiments, the container further includes a plate body connected to the beam body, the plate body is provided with a second cavity, and the energy-absorbing structure is accommodated in the second cavity.

[0025] The technical scheme of the embodiment makes the container further include a plate body, the second cavity is arranged in the plate body, and the energy-absorbing structure is arranged in the second cavity, so that the plate body can also absorb the energy generated by the collision, so that the plate body can better cooperate with the beam body to absorb energy and better protect the battery monomer.

[0026] In some embodiments, the energy-absorbing structure includes a non-Newtonian fluid.

[0027] The technical scheme of the embodiment makes the energy-absorbing structure include a non-Newtonian fluid, because the non-Newtonian fluid will change phase and absorb and dissipate a large amount of energy when subjected to an external force, so the non-Newtonian fluid in the plate body can absorb and dissipate part of the energy generated by the collision when the plate body is subjected to the collision, thereby reducing the collision energy transmitted to the battery device and relieving the damage to the battery device.

[0028] In some embodiments, the second cavity is provided with a second reinforcing rib connected to the plate body.

[0029] The technical scheme of the embodiment makes the second reinforcing rib arranged in the second cavity, so as to improve the strength of the plate body through the second reinforcing rib, thereby improving the protection capability of the container for the battery device.

[0030] In some embodiments, the second reinforcing rib divides the second cavity into at least two second sub-cavities, and at least one second sub-cavity accommodates the energy-absorbing structure.

[0031] The technical scheme of the embodiment makes the second reinforcing rib separate the second cavity into a plurality of second sub-cavities, so that each second sub-cavity has a certain energy absorption effect, thereby further improving the energy absorption effect of the plate body; meanwhile, in the case that part of the second sub-cavities are deformed due to collision, the other second sub-cavities that do not deform can still continue to have the energy absorption effect, and the other second reinforcing ribs that do not deform can still provide support performance, that is, the arrangement can make the plate body not completely fail in the case of deformation.

[0032] In some embodiments, the second sub-cavities are closed cavities, so that the second sub-cavities are not connected to each other.

[0033] The technical scheme of the embodiment makes each second sub-cavity a closed and mutually disconnected space, and in the case that part of the second sub-cavities are deformed due to collision, the arrangement can make the energy absorption structure in the second sub-cavities that do not deform difficult to leak, so that the second sub-cavities that do not deform can better continue to protect the battery device, thereby better making the plate body not completely fail in the case of deformation.

[0034] In some embodiments, the second reinforcing rib forms a honeycomb structure in the second cavity, and the second sub-cavities are prismatic cavities.

[0035] The technical scheme of the embodiment provides specific structures of some second reinforcing ribs and second sub-cavities, so that the second reinforcing ribs can better provide support for the plate body, and the second sub-cavities can better absorb the energy generated by collision.

[0036] In a second aspect, the embodiments of the present application also provide a storage energy device, which comprises:

[0037] The battery device; the container comprises a plurality of beam bodies and a plate body, the plurality of beam bodies are connected to each other to form a frame structure and enclose a containing space, the containing space is used to contain battery monomers, and the plate body is connected to the beam body; the plate body is provided with a second cavity, and the second cavity contains an energy absorption structure.

[0038] In the technical scheme of the embodiment, the second cavity is arranged in the plate body of the container, and the energy absorption structure is arranged in the second cavity, so as to absorb the energy generated by collision through the second cavity and the energy absorption structure, reduce the energy transmitted to the battery device, thereby relieving the damage of the container to the battery device, and improving the protection capability of the container to the battery device.

[0039] In a third aspect, the embodiments of the present application also provide a storage energy system, which comprises the storage energy device provided by some embodiments of the first aspect, or the storage energy device provided by some embodiments of the second aspect; the storage energy system further comprises a power conversion device, and the power conversion device is used to electrically connect the power generation device and the storage energy device.

[0040] In a fourth aspect, the embodiments of the present application further provide a charging network, comprising the energy storage device provided by some embodiments of the first aspect, or the energy storage device provided by some embodiments of the second aspect, or the energy storage system provided by some embodiments of the third aspect; the charging network further comprises a charging pile, and the energy storage device is configured to provide electric energy for the charging pile.

[0041] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, and to implement the same according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same or similar elements. In the drawings:

[0043] Figure 1 Perspective view of the energy storage device provided by some embodiments of the present application Figure 1 ;

[0044] Figure 2 Perspective view of the energy storage device provided by some embodiments of the present application Figure 2 ;

[0045] Figure 3 Front view of the energy storage device provided by some embodiments of the present application

[0046] Figure 4 Cross-sectional view of the energy storage device provided by some embodiments of the present application at line A-A in FIG. Figure 3

[0047] Cross-sectional view of the energy storage device provided by some embodiments of the present application at line B-B in FIG. Figure 5 Figure 3 Structure diagram of the energy storage system provided by some embodiments of the present application

[0048] Figure 6 Structure diagram of the charging network provided by some embodiments of the present application.

[0049] Figure 7 The meanings of the labels in the figures are as follows:

[0050] 1000, energy storage device;

[0051] 100, battery device;

[0052] 100, battery device;

[0053] 200, container;​

[0054] 10, containing space; 11, sub-space;

[0055] 20, beam body; 21, first cavity; 211, first sub-cavity; 22, first reinforcing rib; 23, first beam body; 24, second beam body;

[0056] 30, plate body; 31, second cavity; 311, second sub-cavity; 32, second reinforcing rib;

[0057] 2000, power conversion device;

[0058] 3000, power generation device;

[0059] 4000, charging pile;

[0060] 5000, connector. DETAILED DESCRIPTION

[0061] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0063] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0064] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0065] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0066] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0067] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0068] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0069] The energy storage device is a device integrating a battery device and a control cabinet, the control cabinet and the battery device are coupled and connected, the battery device is managed, and the conversion between electrical energy and chemical energy is used to realize the storage and output of electrical energy. The battery device can be used as a backup power supply, or used for peak clipping and valley filling when power supply is uneven, or used for frequency modulation when power load or power generation is large, or used in a photovoltaic storage and generation system.

[0070] The transportation of the energy storage device is to transport the energy storage device from the production side (for example, the manufacturer) to the user side (for example, the consumer). In order to facilitate transportation, the battery device and the control cabinet are usually integrated into a prefabricated structure and placed in a container.

[0071] The container is prone to collision during hoisting, transportation and the like. The collision energy is easily transmitted to the battery device through the beam body or the plate body of the container, thereby easily causing the battery device to be damaged. In the case that the collision causes the container to deform, the deformed beam body or plate body is even prone to deform into the container and stab the battery device.

[0072] Based on the above considerations, in order to alleviate the problem that the collision of the container easily causes damage to the battery device, the embodiments of the present application provide an energy storage device. A first cavity is arranged in the beam body of the container, and an energy absorption structure is arranged in the first cavity. In such an energy storage device, the first cavity in the beam body and the energy absorption structure can absorb part of the collision energy in the case of being subjected to collision, thereby reducing the collision energy transmitted to the battery device, so that the container can better protect the battery device. At the same time, in the case that the beam body deforms, the outer side of the beam body can first deform into the first cavity, and absorbs the collision energy in the process of deformation, so as to reduce the collision energy borne by the inner side of the beam body towards the battery monomer, and reduce the deformation amount of the inner side of the beam body, thereby reducing the damage that the deformation of the beam body may cause to the battery device.

[0073] The energy storage device disclosed in the embodiments of the present application can be used in the industrial field, for example, to balance the load and reduce the peak-valley difference. It can also be used in commercial complexes to realize peak clipping and valley filling of electric power and intelligent management, etc.

[0074] The following embodiments take a container type energy storage device as an example for the convenience of description.

[0075] Reference Figure 1 The embodiments of the present application provide an energy storage device 1000, which includes one or more battery clusters to improve the voltage and capacity of the energy storage device 1000. The battery cluster can include a plurality of battery devices 100, and the plurality of battery devices 100 are connected in series through a busbar component to improve the voltage of the energy storage device 1000. When the energy storage device 1000 includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device 1000.

[0076] The energy storage device 1000 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems, etc. The energy storage device 1000 can store electric energy as needed and output electric energy at appropriate times. For example, the energy storage device 1000 can store electric energy at the low electricity consumption valley, and provide electric energy for related users or electric equipment at the electricity consumption peak. The energy storage system provided by the embodiments of the present application can be any power system that needs to use the energy storage device 1000.

[0077] In some embodiments, the energy storage device 1000 is an energy storage container or an energy storage cabinet.

[0078] In some embodiments, the energy storage device 1000 can include a cabinet body and one or more battery clusters, which are accommodated in the cabinet body.

[0079] In some embodiments, the energy storage device 1000 can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module.

[0080] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid through pipelines to each battery device 100 for adjusting the temperature of the battery monomer.

[0081] As an example, the master control module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master control module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The master control module includes a slave battery management unit SBMU (SBMU), a fusion switch, and other modules.

[0082] As an example, the general control module can serve as a battery management unit of the energy storage device 1000 for monitoring and managing the energy storage device 1000. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device 1000. For example, the charging and discharging current and voltage of the energy storage device 1000 can be controlled. As an example, the general control module includes an insulation monitoring module IMM (IMM), a master battery management unit MBMU (MBMU), an Ethernet ETH (ETH), and an optical fiber conversion module, and other modules.

[0083] As an example, the fire-fighting module includes a control panel, a detector, an alarm device, and the like, for detecting, alarming, or extinguishing the energy storage system.

[0084] As an example, the power distribution module can be used to distribute power to the modules that need power in the energy storage device 1000.

[0085] Reference Figures 1 to 3In a first aspect, the embodiments of the present application provide a kind of energy storage device 1000, including battery device 100 and container 200.Therein, container 200 includes a plurality of beam bodies 20, a plurality of beam bodies 20 are connected to form a frame structure, and form the containing space 10 for containing battery monomer;At least part of beam body 20 is equipped with first cavity 21, and first cavity 21 contains energy absorption structure.

[0086] Battery device 100 refers to the device for storing and releasing electric energy in energy storage device 1000, battery device 100 and including a plurality of one or more battery monomers, a plurality of battery monomers can be connected in series or parallel or mixed connection, and mixed connection refers to that a plurality of battery monomers have series connection and parallel connection.The plurality of battery monomers can be directly connected in series or parallel or mixed together, and the whole of the plurality of battery monomers is contained in the box;Of course, the battery device 100 can also be that a plurality of battery monomers are connected in series or parallel or mixed to form a battery module, and a plurality of battery modules are connected in series or parallel or mixed to form a whole.The battery device 100 can also include other structures, for example, the battery device 100 can also include a busbar component for realizing the electrical connection between a plurality of battery monomers.

[0087] Each battery monomer can be a secondary battery;It can also be lithium-sulfur battery, sodium-ion battery or magnesium-ion battery, but is not limited thereto.The battery monomer can be in the shape of a cylinder, a flat body, a cuboid or other shapes.

[0088] Container 200 refers to the structure for providing installation basis for battery device 100 and other structures in energy storage device 1000, container 200 is used for containing battery device 100 and other structures (such as heat management module, main control module, etc.);Container 200 can be prismatic, cylindrical or other shapes.

[0089] Beam body 20 is the main support structure in container 200, and a plurality of beam bodies 20 can be connected to form a frame structure;For example, a plurality of beam bodies 20 can include a plurality of cross beams and a plurality of longitudinal beams, and the plurality of cross beams and the plurality of longitudinal beams can be connected by welding, screwing or other ways.The frame structure can be set according to the size of container 200 and battery device 100.

[0090] Beam body 20 can be a box beam, an I-beam or other shaped beam body 20;The material of beam body 20 can include metal, plastic or other materials.

[0091] The accommodation space 10 refers to a space in a frame structure formed by the plurality of beam bodies 20, and is used to accommodate the battery device 100 and other structures (such as a thermal management module, a master control module, etc.) of the energy storage device 1000; since the accommodation space 10 is surrounded by the plurality of beam bodies 20, that is, the accommodation space 10 is an open space, and each beam body 20 is a boundary of the accommodation space 10; according to the shape of the frame structure, the accommodation space 10 can be a cuboid space, or can be a space of other shapes.

[0092] It can be understood that the plate body 30 can be arranged on the beam body 20 to separate the accommodation space 10 from the space outside the container 200, and make the accommodation space 10 a closed space.

[0093] The battery device 100 is accommodated in the accommodation space 10, and the battery device 100 can be directly connected to the beam body 20 to be accommodated in the accommodation space 10, or can be indirectly connected to the beam body 20 through an intermediate structure to be accommodated in the accommodation space 10.

[0094] The first cavity 21 refers to a space arranged in the beam body 20, and can be a prismatic space, a cylindrical space or a space of other shapes, and the shape of the first cavity 21 can also be arranged according to the shape of the beam body 20; one beam body 20 can be provided with only one first cavity 21, or can be provided with two or more first cavities 21; the first cavity 21 can be arranged in only one or several of the plurality of beam bodies 20, or can be arranged in each beam body 20; the first cavity 21 can be formed in the beam body 20 after the beam body 20 is processed, or the first cavity 21 can be pre-set during the processing of the beam body 20, so that the first cavity 21 can be directly formed after the beam body 20 is processed.

[0095] The first cavity 21 is arranged in at least part of the beam bodies 20, that is, the first cavity 21 can be arranged in only part of the beam bodies 20, or can be arranged in all of the beam bodies 20.

[0096] The collision to the beam body 20 is usually from outside the container 200, that is, the collision to the beam body 20 is usually located at the outer side of the beam body 20 facing outside the container 200. Therefore, in the case that the beam body 20 is deformed due to the collision, the outer side of the beam body 20 can be deformed into the first cavity 21 first, and part of the collision energy can be absorbed in the process of deformation. At this time, under the buffering of the first cavity 21, the deformed part of the outer side of the beam body 20 is difficult to cause damage to the battery device 100. Meanwhile, in the case that the outer side of the beam body 20 is deformed and absorbs part of the energy, the collision energy acting on the inner side of the beam body 20 facing the battery device 100 will be reduced, and the inner side of the beam body 20 is less likely to be deformed, or the deformation amount of the inner side of the beam body 20 is smaller, thereby reducing the damage that the deformation of the beam body 20 can cause to the battery device 100. In the case that the inner side of the beam body 20 is not deformed, the beam body 20 absorbs part of the collision energy, and reduces the collision energy transmitted to the battery device 100, thereby also reducing the damage that the battery device 100 can suffer.

[0097] The energy-absorbing structure refers to a structure capable of absorbing collision energy. The energy-absorbing structure can include liquid energy-absorbing materials, solid energy-absorbing materials, etc. The energy-absorbing structure can also include structures having elasticity, cavities, or deformation capability to absorb and dissipate collision energy through deformation. For example, in the case that the energy-absorbing structure includes liquid energy-absorbing materials, the energy-absorbing structure can include polyvinyl chloride suspension, slurry, ink, water-coal slurry, etc. These materials will flow and possibly change phase under the action of external force, thereby dissipating and absorbing part of the energy in the process of flowing or changing phase. For example, in the case that the energy-absorbing structure includes solid energy-absorbing materials, the energy-absorbing structure can include organic silicon materials, foam materials, rubber materials, etc.

[0098] The energy-absorbing structure can completely fill the first cavity 21 to absorb collision energy. The energy-absorbing structure can also only occupy part of the space of the first cavity 21, so that the remaining space in the first cavity 21 can also have a certain energy-absorbing effect, and the weight of the corresponding beam body 20 can be reduced.

[0099] In the case that the container 200 is subjected to a collision, the energy-absorbing structure can absorb part of the collision energy to reduce the collision energy transmitted to the battery device 100, thereby reducing the collision damage that the battery device 100 can suffer.

[0100] In the energy storage device 1000 provided in the embodiment, in the case that the beam body 20 of the container 200 is subjected to a collision, the energy-absorbing structure can absorb part of the collision energy to reduce the collision energy transmitted to the battery device 100. Meanwhile, the energy-absorbing structure can also reduce the collision energy acting on the beam body 20, so that the beam body 20 is less likely to be deformed.

[0101] In the case of deformation of the beam body 20, the outer side of the beam body 20 can first deform into the first cavity 21 and absorb part of the collision energy in the process of deformation, at which time the deformed part of the outer side of the beam body 20 is difficult to cause damage to the battery device 100 under the buffering of the first cavity 21; at the same time, in the case of deformation of the outer side of the beam body 20 and absorption of part of the energy, the collision energy received by the inner side of the beam body 20 towards the battery device 100 will be reduced, and the inner side of the beam body 20 is less likely to deform, or the deformation amount of the inner side of the beam body 20 is smaller, thereby reducing the damage that the deformation of the beam body 20 can cause to the battery device 100.

[0102] In the embodiment, the first cavity 21 is arranged in the beam body 20 of the container 200, and the energy absorption structure is arranged in the first cavity 21, so as to absorb the energy generated by the collision through the first cavity 21 and the energy absorption structure, reduce the energy transmitted to the battery device 100, thereby relieving the damage of the container 200 to the battery device 100, and improving the protection capability of the container 200 to the battery device 100.

[0103] In some embodiments, the energy absorption structure includes a non-Newtonian fluid.

[0104] The non-Newtonian fluid refers to a fluid that does not satisfy the Newtonian viscosity experimental law, that is, a fluid whose stress and strain rate are not linearly related, that is, the viscosity of the non-Newtonian fluid is not constant, but changes with the change of stress; the non-Newtonian fluid can include polyvinyl chloride suspension, mud, ceramic slurry, coal water slurry, etc.

[0105] The non-linear deformation characteristic of the non-Newtonian fluid enables the non-Newtonian fluid to dissipate and absorb part of the energy through phase change and flow under the action of an external force; in the beam body 20, the non-Newtonian fluid can better absorb the collision energy received by the beam body 20, thereby reducing the collision energy acting on the beam body 20 and transmitted to the battery device 100, and protecting the beam body 20 and the battery device 100.

[0106] In the embodiment, the energy absorption structure includes a non-Newtonian fluid, and the non-Newtonian fluid can absorb and dissipate part of the energy generated by the collision in the case of collision of the beam body 20, thereby reducing the collision energy transmitted to the battery device 100 and relieving the damage to the battery device 100.

[0107] In some embodiments, the energy absorption structure includes any one of a polyethylene solution, a polyacrylamide solution, and a polyvinyl chloride solution.

[0108] The polyethylene solution is a high-molecular compound polymerized from ethylene monomers, has good physical and chemical properties, such as wear resistance, chemical corrosion resistance, electrical insulation, low-temperature toughness, and the like; the polyethylene can be dissolved in a solvent to form a solution, and the solution can be configured as a non-Newtonian fluid.

[0109] The polyacrylamide (PAM) is a high-molecular polymer polymerized from acrylamide monomers, has excellent flocculation, thickening, viscosity reduction, and acid resistance, and the like; the polyacrylamide can be dissolved in water to form a transparent solution, and the solution can be configured as a non-Newtonian fluid.

[0110] The polyvinyl chloride is a high-molecular polymer polymerized from chloroethylene monomers, has excellent mechanical properties, electrical properties, and acid and alkali resistance, and good chemical stability; the polyvinyl chloride can be dissolved in a solvent to form a solution, and the solution can be configured as a non-Newtonian fluid.

[0111] The polyethylene solution, the polyacrylamide solution, and the polyvinyl chloride solution can all undergo micro-phase changes (such as deformation and friction of molecular chains) under the action of external forces, and can absorb and dissipate certain energy through the phase changes; in the case that the beam body 20 is subjected to a collision, the solutions can absorb and dissipate part of the collision energy, so as to reduce the collision energy acting on the beam body 20 and reduce the energy transmitted to the battery device 100, thereby being capable of improving the strength of the beam body 20 and playing a protective role on the battery device 100.

[0112] The embodiment provides some specific selections of the energy-absorbing structures, so that the energy-absorbing structures can better absorb the energy generated by the collision.

[0113] Reference Figure 3 , Figure 4 In some embodiments, the first cavity 21 is provided with a first reinforcing rib 22 connected to the beam body 20.

[0114] The first reinforcing rib 22 is a support structure arranged in the first cavity 21, and is used to improve the strength of the beam body 20; the first reinforcing rib 22 can be a plate-shaped structure, or a columnar structure or other shaped structure; the first reinforcing rib 22 is arranged in the first cavity 21 and connected to the inner wall surface of the beam body 20 facing the first cavity 21, and can be connected to the inner wall of the beam body 20 facing the first cavity 21 by welding, screwing or the like, or can be integrally formed with the beam body 20; the number of the first reinforcing rib 22 can be one, two or more, and a plurality of first reinforcing ribs 22 can be parallel to each other or intersected; the material of the first reinforcing rib 22 can include metal, plastic or other materials, and can be the same as or different from the material of the beam body 20.

[0115] The first reinforcing rib 22 can reduce the risk of deformation of the beam body 20 caused by collision, and can improve the support performance of the beam body 20, so that the beam body 20 can better provide support and fixing basis for the battery device 100 and other structures of the energy storage device 1000.

[0116] In the embodiment, the first reinforcing rib 22 is arranged in the first cavity 21 to improve the strength of the beam body 20 through the first reinforcing rib 22, thereby improving the protection capability of the container 200 for the battery device 100.

[0117] Reference Figure 3 , Figure 4 In some embodiments in which the first reinforcing rib 22 is arranged in the first cavity 21, the first reinforcing rib 22 divides the first cavity 21 into at least two first sub-cavities 211, and at least one first sub-cavity 211 contains an energy-absorbing structure.

[0118] The first sub-cavity 211 refers to a space structure formed in the first cavity 21, and the first sub-cavity 211 is formed by dividing the first cavity 21 by the first reinforcing rib 22; according to the arrangement mode and number of the first reinforcing rib 22, the first sub-cavity 211 can be a prismatic space, a semi-cylindrical space or other shaped space structure; the number of the first sub-cavity 211 is at least two, that is, the number of the first sub-cavity 211 can be two, or three or more.

[0119] The plurality of first sub-cavities 211 can better absorb the energy generated by the collision of the beam body 20; in the case of partial deformation of the beam body 20, part of the first reinforcing rib 22 can also be deformed, which can cause the first sub-cavity 211 to deform; in this process, the deformation of the beam body 20, the first reinforcing rib 22 and the first cavity 21 can absorb energy, thereby reducing the energy transmitted to the battery device 100.

[0120] The at least one first sub-cavity 211 contains an energy-absorbing structure, that is, the energy-absorbing structure can be contained in only one first sub-cavity 211, or energy-absorbing structures can be arranged in multiple first sub-cavities 211, or energy-absorbing structures can be arranged in all first sub-cavities 211.

[0121] The energy-absorbing structure is arranged in the first sub-cavity 211 to better absorb the collision energy generated by the collision of the corresponding beam body 20, thereby improving the strength of the beam body 20 and reducing the collision energy transmitted to the battery device 100.

[0122] In the embodiment, the first reinforcing rib 22 divides the first cavity 21 into a plurality of first sub-cavities 211, so that each first sub-cavity 211 has a certain energy absorption effect, thereby further improving the energy absorption effect of the beam body 20; meanwhile, in the case that part of the first sub-cavities 211 are deformed due to collision, the other first sub-cavities 211 which are not deformed can still continue to have the energy absorption effect, and the other first reinforcing ribs 22 which are not deformed can still provide support performance, that is, the setting can make the beam body 20 not completely fail in the case of deformation of the beam body 20.

[0123] Reference Figure 3 、 Figure 4 In some embodiments in which the first reinforcing rib 22 divides the first cavity 21 into a plurality of first sub-cavities 211, the first sub-cavities 211 are closed cavities, so that the first sub-cavities 211 are not connected to each other.

[0124] The first sub-cavities 211 are closed cavities, and the first sub-cavities 211 are not connected to each other, so as to reduce the influence between the first sub-cavities 211; in the case that the energy absorption structure includes a non-Newtonian fluid, the setting can reduce the flow of the energy absorption structure between the first sub-cavities 211.

[0125] In the case that the beam body 20 is deformed or broken due to collision, part of the first sub-cavities 211 may be deformed and broken, and the energy absorption structure in the part of the deformed first sub-cavities 211 moves out of the beam body 20, so that the deformed first sub-cavities 211 fail to continue to have the energy absorption effect; at this time, because the first sub-cavities 211 are not connected to each other, the energy absorption structure in the other first sub-cavities 211 which are not deformed or broken is difficult to move out of the beam body 20, so that the first sub-cavities 211 which are not deformed or broken can still have the energy absorption effect, thereby making the beam body 20 not easily completely fail in the case of deformation.

[0126] In the embodiment, the first sub-cavities 211 are closed and not connected to each other, in the case that part of the first sub-cavities 211 are deformed due to collision, the setting can make the energy absorption structure in the first sub-cavities 211 which are not deformed difficult to leak, so that the first sub-cavities 211 which are not deformed can better continue to have the effect of protecting the battery device 100, thereby better making the beam body 20 not completely fail in the case of deformation.

[0127] Reference Figure 3 、 Figure 4 In some embodiments in which the first reinforcing rib 22 divides the first cavity 21 into a plurality of first sub-cavities 211, the first reinforcing rib 22 forms a honeycomb structure in the first cavity 21, and the first sub-cavities 211 are prismatic cavities.

[0128] The honeycomb structure is formed by arranging and combining a plurality of first sub-cavities 211 of the same shape, and the openings of each first sub-cavity 211 in the honeycomb structure are oriented in the same direction; the first reinforcing ribs 22 form a honeycomb structure in the first cavity 21, that is, there are a plurality of first reinforcing ribs 22, and the plurality of first reinforcing ribs 22 are connected to each other and form a plurality of first sub-cavities 211; since the first sub-cavities 211 are formed by the first reinforcing ribs 22 separating the first cavity 21, each first sub-cavity 211 is tightly fitted.

[0129] Since the first reinforcing ribs 22 are connected to each other in the first cavity 21, in the case of a collision of the beam body 20, the collision energy can be dispersed to each first reinforcing rib 22, improving the integrity of the beam body 20 and reducing the risk of deformation caused by excessive energy on a part of the beam body 20; so that the honeycomb structure can have higher strength and stiffness, thereby improving the load-bearing performance and stability of the beam body 20.

[0130] In the case where the first reinforcing ribs 22 form a honeycomb structure in the first cavity 21, each first sub-cavity 211 has the same shape, at this time each first sub-cavity 211 is a prismatic cavity, for example, it can be a cuboid cavity, a hexagonal prism cavity, etc.; for example, the first sub-cavity 211 is a regular hexagonal prism cavity.

[0131] The embodiment provides some specific structures of the first reinforcing ribs 22 and the first sub-cavities 211, so that the first reinforcing ribs 22 can better support the beam body 20, and the first sub-cavities 211 can better absorb the energy generated by the collision.

[0132] Reference Figure 2 、 Figure 3 In some embodiments, the plurality of beam bodies 20 includes a plurality of first beam bodies 23 and a plurality of second beam bodies 24, the plurality of first beam bodies 23 are connected to each other to form a frame structure and enclose the accommodation space 10; the second beam body 24 is connected to the first beam body 23, and the plurality of second beam bodies 24 are used to divide the accommodation space 10 into a plurality of sub-spaces 11, and the battery device 100 is accommodated in the sub-space 11; the first cavity 21 is arranged in the second beam body 24.

[0133] The first beam body 23 and the second beam body 24 are both one of the beam bodies 20.

[0134] The first beam body 23 refers to the beam body 20 used to form the frame structure of the container 200, and the plurality of first beam bodies 23 are connected to form the frame structure of the container 200, and the first beam body 23 can be located at the intersection of adjacent two outer surfaces of the container 200; the first beam body 23 can be a box beam, an I-beam or other shaped beam structure; the material of the first beam body 23 can include metal, plastic or other materials.

[0135] The plurality of first beam bodies 23 can surround the accommodating cavity to accommodate the battery device 100, and each first beam body 23 defines the boundary of the accommodating cavity to define the accommodating space 10 within the frame structure; due to the structure of the first beam body 23, the accommodating space 10 is an open space, and at this time, the container 200 can also include the plate body 30, and the plate body 30 is connected to the first beam body 23 to separate the accommodating space 10 from the space outside the container 200 by the plate body 30.

[0136] The second beam body 24 refers to a structure for forming the sub-space 11 inside the accommodating space 10, and the second beam body 24 is arranged in the accommodating space 10 and connected to the first beam body 23. The plurality of second beam bodies 24 can define the sub-space 11 in the accommodating space 10 and accommodate the battery device 100 through the sub-space 11; the sub-space 11 can be a cuboid space or a space of other shapes.

[0137] Since the sub-space 11 is surrounded by the plurality of second beam bodies 24, that is, the sub-space 11 is an open space, and each second beam body 24 is the boundary of the sub-space 11; the plate body 30 can be arranged on the second beam body 24 to separate the sub-space 11 from the accommodating space 10 outside the sub-space 11, so that the sub-space 11 is a closed space.

[0138] The sub-space 11 is used to accommodate the battery device 100, and the sub-space 11 is formed by the second beam body 24 separating the accommodating space 10, that is, the second beam body 24 is closer to the battery device 100 in the corresponding sub-space 11, and the second beam body 24 can more directly protect the adjacent battery device 100, and at the same time, the second beam body 24 is more likely to cause damage to the adjacent battery device 100 when it is collided. Accordingly, the first cavity 21 is arranged in the second beam body 24, so that the second beam body 24 can better protect the battery device 100, and at the same time, it can reduce the damage to the adjacent battery device 100 caused by the collision of the second beam body 24.

[0139] For example, in the case where the first cavity 21 is arranged in the second beam body 24, the first cavity 21 is also arranged in the first beam body 23.

[0140] For example, in the case where the first cavity 21 is arranged in the second beam body 24, the first reinforcing rib 22 can also be arranged in the first cavity 21 to form a plurality of closed first sub-cavities 211 that are not connected to each other, and the energy-absorbing structure can be arranged in each first sub-cavity 211, and the energy-absorbing structure can be a non-Newtonian fluid.

[0141] The cavity is arranged in the beam body 20, and the reinforcing rib and the energy-absorbing structure are arranged in the cavity, which requires additional processing of the beam body 20, resulting in a higher cost of the beam body 20 with the first cavity 21, the first reinforcing rib 22 and the energy-absorbing structure than a normal beam body 20. Accordingly, the beam body 20 includes the first beam body 23 and the second beam body 24 in the embodiment, and the second beam body 24 forms the sub-space 11 accommodating the battery device 100 in the frame structure, that is, the second beam body 24 is closer to the battery device 100; the first cavity 21 is arranged in the second beam body 24, that is, the energy-absorbing structure is also arranged in the second beam body 24, so as to protect the battery device 100 through the second beam body 24, while the cost of the entire container 200 is reduced.

[0142] In some embodiments, the beam body 20 is a metal structural member, and the beam body 20 is a rigid structural member.

[0143] The beam body 20 is a metal structural member, and the beam body 20 is a rigid structural member, so that the beam body 20 can have a higher strength, so that the beam body 20 can better support and protect the battery device 100 and other structures, and the risk of deformation of the beam body 20 is reduced.

[0144] The material of the beam body 20 can include copper, copper alloy, aluminum, aluminum alloy or other metals.

[0145] Since the beam body 20 is used not only to absorb part of the energy generated by the collision in the case of collision, but also to support and protect the battery device 100 and other structures during daily transportation and hoisting, the beam body 20 is a metal structural member in the embodiment, so that the beam body 20 can have a higher strength, so as to better provide support performance and protect the battery device 100.

[0146] Reference Figure 3 、 Figure 5 In some embodiments, the container 200 further includes a plate body 30 connected to the beam body 20, and the plate body 30 is provided with a second cavity 31 containing an energy-absorbing structure.

[0147] The plate body 30 refers to a structure in the container 200 for separating the battery device 100 and other structures from the space outside the container 200, and the plate body 30 can also protect the battery device 100 and other structures; the number of plate bodies 30 can be one, two or more. When the number of plate bodies 30 is one, the plate body 30 can be arranged on one side of the container 200 to separate the accommodation space 10 from the space outside the container 200. When the number of plate bodies 30 is more than one, the plate bodies 30 can be arranged on different sides of the container 200 to completely separate the accommodation space 10 from the space outside the container 200.

[0148] The plate body 30 can be a square structure, a circular structure or other shapes; the plate body 30 is connected to the beam body 20, and the plate body 30 can be fixedly connected to the beam body 20 by welding, screwing or other ways, or can be movably connected to the beam body 20 by hinging, clamping or other ways; the material of the plate body 30 can include metal, plastic or other materials.

[0149] The second cavity 31 refers to a space in the plate body 30, which can be a prismatic space, a cylindrical space or other shapes, and the shape of the second cavity 31 can be set according to the shape of the plate body 30; one plate body 30 can have only one second cavity 31, or two or more second cavities 31; the second cavity 31 can be provided in only one or several of the plate bodies 30, or in each plate body 30; the second cavity 31 can be formed in the plate body 30 after the plate body 30 is formed, or it can be pre-set during the processing of the plate body 30, so that the plate body 30 can directly form the second cavity 31 after processing.

[0150] Since the collision of the plate body 30 usually comes from outside the container 200, i.e. the collision of the plate body 30 usually occurs on the outer side of the plate body 30 facing outside the container 200; therefore, in the case of deformation of the plate body 30 due to collision, the outer side of the plate body 30 can first deform into the second cavity 31 and absorb part of the collision energy in the process of deformation; at this time, under the buffering of the second cavity 31, the deformed part of the outer side of the plate body 30 is difficult to cause damage to the battery device 100; at the same time, in the case of deformation of the outer side of the plate body 30 and absorption of part of the energy, the collision energy received by the inner side of the plate body 30 facing the battery device 100 will be reduced, and the inner side of the plate body 30 is less likely to deform, or the deformation amount of the inner side of the plate body 30 is smaller, thereby reducing the damage that the deformation of the plate body 30 may cause to the battery device 100; and in the case of no deformation of the inner side of the plate body 30, the plate body 30 absorbs part of the collision energy, reducing the collision energy transmitted to the battery device 100, thereby also reducing the damage that the battery device 100 may suffer.

[0151] The energy-absorbing structure refers to a material that can absorb collision energy, which can include liquid energy-absorbing materials, solid energy-absorbing materials, etc.; for example, in the case of a liquid energy-absorbing material, the energy-absorbing structure can include polyvinyl chloride suspension, mud, ink, water-coal slurry, etc., which can flow and possibly change phase under the action of external force, thereby dissipating and absorbing part of the energy in the process of flowing or changing phase; for example, in the case of a solid energy-absorbing material, the energy-absorbing structure can include organic silicon material, foam material, rubber material, etc.

[0152] The energy-absorbing structure can completely fill the second cavity 31 to facilitate absorbing the collision energy; or the energy-absorbing structure can only occupy part of the space of the second cavity 31, so that the remaining space in the second cavity 31 can also have a certain energy-absorbing effect.

[0153] In the case of collision of the container 200, the energy-absorbing structure can absorb part of the collision energy to reduce the collision energy transmitted to the battery device 100, thereby reducing the collision damage that the battery device 100 can suffer.

[0154] In the embodiment, the container 200 further includes a plate body 30, a second cavity 31 is arranged in the plate body 30, and an energy-absorbing structure is arranged in the second cavity 31, so that the plate body 30 can also absorb the energy generated by the collision, thereby enabling the plate body 30 to better cooperate with the beam body 20 to absorb energy and better protect the battery monomer.

[0155] In some embodiments, the energy-absorbing structure includes a non-Newtonian fluid.

[0156] The non-linear deformation characteristics of the non-Newtonian fluid enable the non-Newtonian fluid to dissipate and absorb part of the energy through phase change and flow under the action of an external force; in the plate body 30, the non-Newtonian fluid can better absorb the collision energy received by the plate body 30, thereby reducing the collision energy acting on the plate body 30 and transmitted to the battery device 100, and protecting the plate body 30 and the battery device 100.

[0157] In the embodiment, the energy-absorbing structure includes a non-Newtonian fluid, and because the non-Newtonian fluid will change phase and absorb and dissipate a large amount of energy when subjected to an external force, the non-Newtonian fluid in the plate body 30 can absorb and dissipate part of the energy generated by the collision in the case of collision of the plate body 30, thereby reducing the collision energy transmitted to the battery device 100 and alleviating the damage suffered by the battery device 100.

[0158] Reference Figure 3 , Figure 5 In some embodiments, the second cavity 31 is provided with a second reinforcing rib 32 connected to the plate body 30.

[0159] The second reinforcing rib 32 refers to a supporting structure arranged in the second cavity 31, and is used to improve the strength of the plate body 30. The second reinforcing rib 32 can be a plate-shaped structure, a columnar structure or other shaped structure. The second reinforcing rib 32 is arranged in the second cavity 31 and connected to the inner wall of the plate body 30 facing the second cavity 31. The second reinforcing rib 32 can be connected to the inner wall of the plate body 30 facing the second cavity 31 by welding, screwing or other methods. The second reinforcing rib 32 can also be integrally formed with the plate body 30. The number of the second reinforcing rib 32 can be one, two or more. Multiple second reinforcing ribs 32 can be parallel to each other or intersected. The material of the second reinforcing rib 32 can include metal, plastic or other materials. The material of the second reinforcing rib 32 can be the same as or different from that of the plate body 30.

[0160] The arrangement of the second reinforcing rib 32 can reduce the risk of deformation of the plate body 30 caused by collision. At the same time, the arrangement of the second reinforcing rib 32 can also improve the supporting performance of the plate body 30, so that the plate body 30 can better provide support and fixing basis for the battery device 100 and other structures of the energy storage device 1000.

[0161] In this embodiment, the second reinforcing rib 32 is arranged in the second cavity 31 to improve the strength of the plate body 30, thereby improving the protection capability of the container 200 for the battery device 100.

[0162] Reference Figure 3 、 Figure 5 In some embodiments in which the second reinforcing rib 32 is arranged in the second cavity 31, the second reinforcing rib 32 divides the second cavity 31 into at least two second sub-cavities 311, and at least one second sub-cavity 311 contains the energy-absorbing structure.

[0163] The second sub-cavity 311 refers to a spatial structure formed in the second cavity 31, which is formed by dividing the second cavity 31 by the second reinforcing rib 32. According to the arrangement mode and number of the second reinforcing rib 32, the second sub-cavity 311 can be a prismatic space, a semi-cylindrical space or other shaped space structure. The number of the second sub-cavity 311 is at least two, i.e. the number of the second sub-cavity 311 can be two, three or more.

[0164] Multiple second sub-cavities 311 can better absorb the energy generated by the collision of the plate body 30. In the case of partial deformation of the plate body 30, part of the second reinforcing rib 32 may also be deformed and cause the second sub-cavity 311 to deform. In this process, the deformation of the plate body 30, the second reinforcing rib 32 and the second cavity 31 can all absorb energy, thereby reducing the energy transmitted to the battery device 100.

[0165] The at least one second sub-cavity 311 contains the energy-absorbing structure, that is, the energy-absorbing structure can be contained in only one second sub-cavity 311, or can be arranged in multiple second sub-cavities 311, or can be arranged in all second sub-cavities 311.

[0166] The energy-absorbing structure is arranged in the second sub-cavity 311 to better absorb the collision energy generated by the collision of the corresponding plate body 30 through the energy-absorbing structure, thereby improving the strength of the plate body 30 and reducing the collision energy transmitted to the battery device 100.

[0167] In the embodiment, the second reinforcing rib 32 divides the second cavity 31 into multiple second sub-cavities 311, so that each second sub-cavity 311 has a certain energy-absorbing effect, thereby further improving the energy-absorbing effect of the plate body 30; at the same time, in the case that part of the second sub-cavities 311 are deformed due to collision, the other second sub-cavities 311 that do not deform can still continue to have the energy-absorbing effect, and the other second reinforcing ribs 32 that do not deform can still provide support performance, that is, the arrangement can make the plate body 30 not completely fail in the case of deformation of the plate body 30.

[0168] Reference Figure 3 , Figure 5 In some embodiments in which the second reinforcing rib 32 divides the second cavity 31 into multiple second sub-cavities 311, the second sub-cavities 311 are closed cavities, so that the second sub-cavities 311 are not connected to each other.

[0169] The second sub-cavities 311 are closed cavities, and the second sub-cavities 311 are not connected to each other, so as to reduce the influence between the second sub-cavities 311; in the case that the energy-absorbing structure includes a non-Newtonian fluid, the arrangement can reduce the flow of the energy-absorbing structure between the second sub-cavities 311.

[0170] In the case that the plate body 30 is deformed or broken due to collision, part of the second sub-cavities 311 can be deformed and broken, and the energy-absorbing structure in the part of the deformed second sub-cavities 311 moves out of the plate body 30, and the part of the deformed second sub-cavities 311 fails to continue to have the energy-absorbing effect; at this time, because the second sub-cavities 311 are not connected to each other, the energy-absorbing structure in the other second sub-cavities 311 that do not deform or break is difficult to move out of the plate body 30, and at this time, the second sub-cavities 311 that do not deform or break can still have the energy-absorbing effect, thereby making the plate body 30 not easily completely fail in the case of deformation due to collision.

[0171] In the embodiment, each second sub-cavity 311 is a closed and mutually unconnected space. In the case that part of the second sub-cavities 311 are deformed due to collision, the energy-absorbing structure in the second sub-cavities 311 that are not deformed is difficult to leak, so that the second sub-cavities 311 that are not deformed can better continue to protect the battery device 100, so that the plate body 30 can better not be completely disabled in the case of deformation.

[0172] Reference Figure 3 、 Figure 5 In some embodiments in which the second reinforcing rib 32 divides the second cavity 31 into a plurality of second sub-cavities 311, the second reinforcing rib 32 forms a honeycomb structure in the second cavity 31, and the second sub-cavity 311 is a prismatic cavity.

[0173] Since the second reinforcing ribs 32 are connected to each other in the second cavity 31, in the case that the plate body 30 is subjected to collision, the collision energy can be dispersed to each second reinforcing rib 32, improving the integrity of the plate body 30 and reducing the risk that a part of the plate body 30 is deformed due to excessive energy. Thus, the honeycomb structure can have high strength and rigidity, thereby improving the load-bearing performance and stability of the plate body 30.

[0174] In the case that the second reinforcing rib 32 forms a honeycomb structure in the second cavity 31, the shapes of the second sub-cavities 311 are the same, and at this time, each second sub-cavity 311 is a prismatic cavity, for example, a cuboid cavity, a hexagonal prism cavity, etc. For example, the second sub-cavity 311 is a regular hexagonal prism cavity.

[0175] The embodiment provides specific structures of some second reinforcing ribs 32 and second sub-cavities 311, so that the second reinforcing rib 32 can better support the plate body 30, and the second sub-cavity 311 can better absorb the energy generated by collision.

[0176] In some embodiments, the energy storage device 1000 includes the battery device 100 and the container 200, and the battery device 100 is accommodated in the container 200.

[0177] The container 200 includes a plurality of beam bodies 20, and the plurality of beam bodies 20 include a plurality of first beam bodies 23 and a plurality of second beam bodies 24. The plurality of first beam bodies 23 are connected to form a frame structure and define an accommodation space 10. The second beam body 24 is connected to the first beam body 23, and the plurality of second beam bodies 24 define a sub-space 11 in the accommodation space 10, and the sub-space 11 is used to accommodate the battery device 100.

[0178] The second beam body 24 is provided with a first cavity 21, the first cavity 21 is provided with a plurality of first reinforcing ribs 22, the first reinforcing ribs 22 are connected to the side wall of the second beam body 24 facing the first cavity 21; the plurality of first reinforcing ribs 22 are intersected to divide the first cavity 21 into a plurality of first sub-cavities 211 not connected to each other and form a honeycomb structure in the first cavity 21; each first sub-cavity 211 is filled with an energy-absorbing structure.

[0179] The container 200 further comprises a plurality of plate bodies 30 connected to the beam bodies 20 to separate the accommodation space 10 from the space outside the container 200; the plate body 30 is provided with a second cavity 31, the second cavity 31 is provided with a plurality of second reinforcing ribs 32, the second reinforcing ribs 32 are connected to the side wall of the plate body 30 facing the second cavity 31; the plurality of second reinforcing ribs 32 are intersected to divide the second cavity 31 into a plurality of second sub-cavities 311 not connected to each other and form a honeycomb structure in the second cavity 31; each second sub-cavity 311 is filled with an energy-absorbing structure.

[0180] The energy-absorbing structure filled in the first sub-cavity 211 and the second sub-cavity 311 is a non-Newtonian fluid.

[0181] In the second aspect, the embodiments of the present application further provide another energy storage device 1000, comprising a battery device 100 and a container 200. The container 200 comprises a plurality of beam bodies 20 and plate bodies 30, the plurality of beam bodies 20 are connected to each other to form a frame structure and enclose an accommodation space 10, the accommodation space 10 is used for accommodating battery monomers, and the plate body 30 is connected to the beam body 20; the plate body 30 is provided with a second cavity 31, and the second cavity 31 contains an energy-absorbing structure.

[0182] Compared with the energy storage device 1000 provided by some embodiments of the first aspect, in the present embodiment, only the second cavity 31 is provided in the plate body 30, that is, only the plate body 30 in the container 200 provided by the present embodiment can absorb the energy generated by the collision through the second cavity 31 and the energy-absorbing structure.

[0183] For example, in the case that the plate body 30 is provided with the second cavity 31, the second cavity 31 is provided with a plurality of second reinforcing ribs 32 connected to the side wall of the plate body 30 facing the second cavity 31.

[0184] For example, the plurality of second reinforcing ribs 32 are intersected to divide the second cavity 31 into a plurality of second sub-cavities 311.

[0185] For example, each second sub-cavity 311 is not connected to each other, and each second sub-cavity 311 is filled with an energy-absorbing structure.

[0186] In the embodiment, the second cavity 31 is arranged in the plate body 30 of the container 200, and the energy absorption structure is arranged in the second cavity 31, so that the energy absorption structure and the second cavity 31 can absorb the energy generated by the collision, and the energy transmitted to the battery device 100 is reduced, thereby reducing the damage of the container 200 to the battery device 100 and improving the protection capability of the container 200 to the battery device 100.

[0187] In a third aspect, referring to Figure 6 The energy storage system provided by the embodiments of the present application also includes the energy storage device 1000 provided by some embodiments of the first aspect or the energy storage device 1000 provided by some embodiments of the second aspect, and further includes a power conversion device 2000 electrically connected to the power generation device 3000 and the energy storage device 1000.

[0188] For example, the energy storage system can include one or more energy storage devices 1000 and a power conversion device (PCS) connected between the power generation device and the energy storage device 1000. 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 1000 through the power conversion device. For example, the power generation device can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. The specific type of the power generation device is not limited in the present application.

[0189] In a fourth aspect, referring to Figure 7 The charging network provided by the embodiments of the present application also includes the energy storage device 1000 provided by some embodiments of the first aspect or the energy storage device 1000 provided by some embodiments of the second aspect or the energy storage system provided by some embodiments of the third aspect, and further includes a charging pile 4000, and the energy storage device 1000 is used to provide electric energy for the charging pile 4000.

[0190] The charging pile 4000 is electrically connected to the energy storage device 1000, and the energy storage device 1000 is used to provide electric energy for the charging pile 4000. The charging pile 4000 is electrically connected to the battery device 100 in the energy storage device 1000 through a cable, and the battery device 100 can provide the electric energy stored therein to the charging pile 4000. The charging pile 4000 has one or more connectors 5000, and the connectors 5000 are used to be connected to an electric device (such as a vehicle), so that the electric device can be charged.

[0191] The energy storage device 1000 can be located inside the charging pile 4000 (for example, a charging and storage integrated machine), or can be located outside the charging pile 4000.

[0192] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present 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 by, The battery device comprises: a battery device; a container comprising a plurality of beam bodies, the plurality of beam bodies being connected to each other to form a frame structure and to enclose a containing space, the containing space being configured to contain battery monomers; at least part of the beam bodies is provided with a first cavity, and the first cavity contains an energy-absorbing structure.

2. The energy storage device of claim 1, wherein, The energy-absorbing structure comprises a non-Newtonian fluid.

3. The energy storage device of claim 2, wherein, The energy-absorbing structure comprises any one of a polyethylene solution, a polyacrylamide solution, and a polyvinyl chloride solution.

4. The energy storage device of any one of claims 1-3, wherein, The first cavity is provided with a first reinforcing rib connected to the beam body.

5. The energy storage device of claim 4, wherein, The first reinforcing rib divides the first cavity into at least two first sub-cavities, and at least one of the first sub-cavities contains the energy-absorbing structure.

6. The energy storage device of claim 5, wherein, The first sub-cavity is a closed cavity, so that each first sub-cavity is not connected to each other.

7. The energy storage device of claim 5, wherein, The first reinforcing rib forms a honeycomb structure in the first cavity, and the first sub-cavity is a prismatic cavity.

8. The energy storage device of any one of claims 1-3, wherein, The plurality of beam bodies comprises a first beam body and a second beam body, and the plurality of first beam bodies are connected to each other to form the frame structure and to enclose the containing space. The second beam body is connected to the first beam body, and the plurality of second beam bodies are configured to divide the containing space into a plurality of sub-spaces, and the battery device is contained in the sub-space. The first cavity is provided in the second beam body.

9. The energy storage device of any one of claims 1-3, wherein, The beam body is a metal structural member, and the beam body is a rigid structural member.

10. The energy storage device of any one of claims 1-3, wherein, The container further comprises a plate body connected to the beam body, and the plate body is provided with a second cavity containing the energy-absorbing structure.

11. The energy storage device of claim 10, wherein, The energy-absorbing structure comprises a non-Newtonian fluid.

12. The energy storage device of claim 10, wherein, The second cavity is provided with a second reinforcing rib connected to the plate body.

13. The energy storage device of claim 12, wherein, The second reinforcing rib divides the second cavity into at least two second sub-cavities, and at least one of the second sub-cavities contains the energy-absorbing structure.

14. The energy storage device of claim 13, wherein, The second sub-cavity is a closed cavity, so that each second sub-cavity is not connected to each other.

15. The energy storage device of claim 13, wherein, The second reinforcing rib forms a honeycomb structure in the second cavity, and the second sub-cavity is a prismatic cavity.

16. An energy storage device, characterized by The battery device comprises: a battery device; a container comprising a plurality of beam bodies and a plate body, the plurality of beam bodies being connected to each other to form a frame structure and to enclose a containing space, the containing space being configured to contain battery monomers, and the plate body being connected to the beam body; The plate body is provided with a second cavity containing an energy-absorbing structure.

17. An energy storage system characterized by, The energy storage device as claimed in any one of claims 1-15, or the energy storage device as claimed in claim 16; The energy storage system further comprises a power conversion device configured to electrically connect the power generation device and the energy storage device.

18. A charging network characterized in that, The energy storage device as claimed in any one of claims 1-15, or the energy storage device as claimed in claim 16, or the energy storage system as claimed in claim 17; The charging network further comprises a charging pile, and the energy storage device is configured to provide electric energy for the charging pile.

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