Energy storage cabinet

Abstract

An energy storage cabinet (100), comprising: a cabinet body (10) and a base (20) that supports the cabinet body (10), wherein the cabinet body (10) has an accommodating space, and a battery (30) is accommodated in the accommodating space; the base (20) comprises two first beams (24) opposite each other in a first direction (X) and two second beams (23) opposite each other in a second direction (Y); each first beam (24) comprises a first support portion (241), an intermediate connection portion (242) and a second support portion (243) which are connected in sequence in the second direction (Y); one second beam (23) is connected between the two first support portions (241) opposite each other in the first direction (X), and another second beam (23) is connected between the two second support portions (243) opposite each other in the first direction (X); and fork-arm through holes (21) are respectively provided in the first support portions (241) and the second support portions (243), the fork-arm through holes (21) provided in the first support portions (241) define a first fork-arm channel (211), and the fork-arm through holes (21) provided in the second support portions (243) define a second fork-arm channel (212), the first fork-arm channel (211) and the second fork-arm channel (212) extending in the same direction.

Description

Energy storage cabinet

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese Patent Application No. 202421595580.9, filed on July 8, 2024, entitled “Energy Storage Cabinet”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of energy storage technology, and in particular to energy storage cabinets. Background Technology

[0004] An energy storage cabinet is an integrated device that combines energy storage and power supply to a load. It is characterized by high efficiency, flexibility, and reliability, and is widely used in industrial, commercial, and residential sectors. For example, an energy storage cabinet can store electrical energy during off-peak hours and release it during peak hours to reduce the burden on the power grid, achieving peak shaving and valley filling, and improving power utilization. Therefore, there is a desire for energy storage cabinets to be flexibly applied to more application scenarios. This has led to the demand for lightweight and easily transportable energy storage cabinets. Summary of the Invention

[0005] To address the aforementioned technical problems, this disclosure provides a lightweight and easily transportable energy storage cabinet.

[0006] This disclosure is achieved through the following technical solution.

[0007] The first aspect of this disclosure provides an energy storage cabinet, comprising: a cabinet body and a base supporting the cabinet body. The cabinet body has a receiving space for storing batteries. The base includes two first beams opposite each other along a first direction and two second beams opposite each other along a second direction, the first direction being perpendicular to the second direction. Each first beam includes a first support portion, an intermediate connecting portion, and a second support portion connected sequentially along the second direction. A second beam is connected between the two first support portions opposite each other along the first direction, and another second beam is connected between the two second support portions opposite each other along the first direction. Fork through holes are respectively provided in each first support portion and each second support portion. The fork through holes respectively provided in the first support portion define a first fork passage, and the fork through holes respectively provided in the second support portion define a second fork passage. The first fork passage and the second fork passage extend in the same direction.

[0008] The base, which is formed by connecting two first beams and two second beams to form a frame structure, helps to reduce the weight of the energy storage cabinet. Since the first support and the second support are the main components that support the cabinet, fork holes for fork insertion are provided in the first support and the second support respectively. This facilitates handling and also helps to improve the stability and reliability of handling.

[0009] In some embodiments, the width of the first support portion and the second support portion along the first direction is greater than the width of the intermediate connecting portion along the first direction.

[0010] By making the widths of the first and second supports greater than the width of the intermediate connecting part, the strength of the first and second supports can be enhanced, thereby improving support reliability and handling stability. Furthermore, by appropriately reducing the width of the intermediate connecting part, the weight of the intermediate connecting part can be reduced, which helps to lighten the base and even the entire energy storage cabinet.

[0011] In some embodiments, the length dimension of the first support portion and the second support portion along the second direction is greater than the beam width dimension of the second beam along the second direction.

[0012] The larger length of the first and second support sections strengthens their strength and improves their reliability. By appropriately reducing the width of the second beam, its weight can be reduced without affecting its supporting function, thus contributing to the lightweighting of the base and the entire energy storage cabinet.

[0013] In some embodiments, along the opening length direction of the fork through hole, the opening length of the fork through hole accounts for more than 50% of the length dimension of the first support portion, wherein the opening length direction is perpendicular to the extension direction of the first fork passage or the second fork passage; and / or, along the opening length direction of the fork through hole, the opening length of the fork through hole accounts for more than 50% of the dimension of the second support portion.

[0014] The ratio of the fork opening length to the support length is within a suitable range, balancing support strength and lightweight design. Furthermore, a larger fork opening accommodates various fork sizes, allowing for stable handling even with a heavy energy storage cabinet using forklifts.

[0015] In some embodiments, along the first direction, the width dimensions of the first support portion and the second support portion are the same, and the width dimension of the intermediate connecting portion accounts for more than 50% and no more than 100% of the width dimension of the first support portion or the second support portion.

[0016] The ratio of the width of the intermediate connecting part to the width of the first or second support part is within a suitable range, which can satisfy both the support strength of the base and the requirement for lightweight design.

[0017] In some embodiments, along a third direction, each first support portion and each second support portion have the same thickness, and the thickness of the intermediate connecting portion is less than the thickness of the first support portion or the second support portion.

[0018] The greater thickness of the first and second support parts can strengthen their strength, thereby increasing the support strength. By appropriately reducing the thickness of the intermediate connection part, the weight of the intermediate connection part can be reduced, which helps to lighten the base and even the entire energy storage cabinet.

[0019] In some embodiments, the cross-section of each second beam and each intermediate connection is a rectangle with an opening on one side. Along the first direction, the two intermediate connections are arranged with their openings facing each other in the cross-section, and along the second direction, the two second beams are arranged with their openings facing each other in the cross-section.

[0020] Each second beam and each intermediate connecting part has a rectangular cross-section with an opening on one side, making each second beam and each intermediate connecting part a hollow structure. This reduces the weight of the base and is beneficial for the lightweight design of the energy storage cabinet. The openings of each second beam and each intermediate connecting part are opposite to each other, so that the openings of the intermediate connecting parts and the openings of the second beam face the inside of the base. The outer surfaces of the intermediate connecting parts and the outer surfaces of the first beam are closed surfaces, which can prevent liquids, dust and other debris from entering. This improves the service life of the base and thus enhances its reliability.

[0021] In some embodiments, the energy storage cabinet further includes: a first protective member that closes the openings at both ends of the first fork passage and is detachably mounted on each of the first supports; and a second protective member that closes the openings at both ends of the second fork passage and is detachably mounted on each of the second supports.

[0022] By sealing the openings at both ends of the first and second fork passages with the first and second protective components respectively, the risk of liquids, dust, and other debris entering the first and second fork passages can be reduced, thus extending the service life of the base.

[0023] In some embodiments, the first protective element comprises a metal sheet and a plastic sheet; and / or, the second protective element comprises a metal sheet and a plastic sheet.

[0024] The first and second protective components are made of thin metal and plastic sheets, which can prevent debris from entering the fork openings while also reducing weight, thus contributing to the lightweight design of the base and the entire energy storage cabinet.

[0025] The embodiments disclosed herein include at least the following beneficial effects: the energy storage cabinet handling efficiency can be improved and the lightweight requirements can be met. Attached Figure Description

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0027] Figure 1 is a schematic diagram of the structure of an energy storage cabinet provided in some embodiments of this disclosure;

[0028] Figure 2 is a perspective view of the base provided in some embodiments of this disclosure;

[0029] Figure 3 is a top view of a base provided in some embodiments of this disclosure;

[0030] Figure 4 is a front view of the base provided in some embodiments of this disclosure;

[0031] Figure 5 is a side view of the base provided in some embodiments of this disclosure;

[0032] Figure 6 is a partial cross-sectional view of a base provided in some embodiments of this disclosure.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Energy storage cabinet; 10 - Cabinet body; 20 - Base; 21 - Fork opening; 23 - Second beam; 24 - First beam; 251 - First protective component; 252 - Second protective component; 30 - Battery; 23a - Opening of the second beam; 211 - First fork passage; 212 - Second fork passage; 241 - First support part; 242 - Intermediate connection part; 242a - Opening of the intermediate connection part; 243 - Second support part. Detailed Implementation

[0035] The embodiments of the technical solutions disclosed herein will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions disclosed herein and are therefore intended to limit the scope of protection of this disclosure.

[0036] 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 disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this disclosure, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

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

[0039] In the description of the embodiments of this disclosure, 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, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0040] In the description of the embodiments of this disclosure, the technical terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0041] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0042] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0043] In this embodiment of the disclosure, the battery can be a secondary battery, which refers to a battery that can be used again after being discharged by recharging to activate the active materials.

[0044] The battery can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this disclosure does not limit it.

[0045] A battery typically comprises one or more individual cells, each generally including an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0046] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0047] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0048] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, silver-treated aluminum or stainless steel, copper, aluminum, nickel, titanium, etc., can be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0049] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this disclosure is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium manganese iron phosphate, and lithium manganese iron phosphate and carbon composites.

[0050] In some embodiments, the positive electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloys, etc. When foamed metal is used as the positive electrode, the surface of the foamed metal may or may not contain a positive electrode active material. As an example, lithium source material, potassium metal, or sodium metal can also be filled and / or deposited within the foamed metal, where the lithium source material is lithium metal and / or a lithium-rich material.

[0051] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0052] As an example, the negative electrode current collector can be a metal foil, a foamed metal, or a composite current collector. For example, as a metal foil, it can be aluminum with a silver surface treatment, or stainless steel, copper, aluminum, nickel, titanium, etc. Composite current collectors can include a polymer material base layer and a metal layer. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, etc. Composite current collectors can be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.). In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0053] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0054] In some embodiments, the separator is a separator membrane. This disclosure does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0055] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride, and ceramic.

[0056] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0057] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This disclosure does not impose specific limitations on the type of electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0058] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0059] In some embodiments, the electrode assembly has a stacked structure.

[0060] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0061] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0062] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0063] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0064] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0065] In some embodiments, the electrode assembly may be cylindrical, flat, or polygonal, etc.

[0066] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0067] In some embodiments, a single battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0068] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This disclosure does not impose any particular limitations.

[0069] In some embodiments, the housing includes an end cap and a shell, the shell having an opening, and the end cap closing the opening to form a sealed space for accommodating substances such as electrode assemblies and electrolytes. The shell may have one or more openings. The end cap may also be provided one or more times.

[0070] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab, or it can be indirectly connected to the tab through an adapter. The electrode terminal can be provided on the end cap or on the housing.

[0071] In some embodiments, a pressure relief mechanism is provided on the housing. The pressure relief mechanism is used to release the internal pressure of the battery cell.

[0072] In some embodiments, the battery can be a battery module, which comprises one or more battery cells as a single physical module to provide higher voltage and capacity. When there are multiple battery cells, they are connected in series, parallel, or mixed via a busbar. Multiple battery cells are arranged and fixed to form a battery module.

[0073] In some embodiments, the battery may be a battery pack, which includes a housing and individual battery cells, with the individual battery cells or battery modules housed within the housing.

[0074] The following is a detailed description of this disclosure.

[0075] An energy storage cabinet is an integrated device that combines energy storage and power release functions. It is characterized by high efficiency, flexibility, and reliability, and is widely used in industrial, commercial, and residential sectors. For example, an energy storage cabinet can store electrical energy during off-peak hours and release it during peak hours to reduce the burden on the power grid, achieving peak shaving and valley filling, and improving power utilization. Therefore, there is a desire for energy storage cabinets to be flexibly applied to more application scenarios. This has led to the demand for lightweight and easily transportable energy storage cabinets.

[0076] In related technologies, when moving energy storage cabinets, the cabinets must first be lifted and placed on a pallet. Then, handling equipment (such as a forklift) is used to move the pallet and the cabinets together to the destination. Finally, the cabinets are unloaded from the pallet. This method is inconvenient, inefficient, and time-consuming. In particular, placing or unloading the cabinets onto or from the pallet requires additional handling equipment or manual assistance.

[0077] In some other related technologies, a base is provided at the bottom of the energy storage cabinet. However, the inventors of this disclosure have noted that the weight of these bases themselves also becomes a burden during handling.

[0078] Therefore, the inventors of this disclosure designed a frame structure energy storage cabinet base and provided fork through holes on the base, which helps to reduce the weight of the energy storage cabinet and facilitates the handling of the energy storage cabinet.

[0079] Based on this design concept, this disclosure provides an energy storage cabinet, including: a cabinet body and a base supporting the cabinet body. The cabinet body has a receiving space for storing batteries. The base includes two first beams opposite each other along a first direction and two second beams opposite each other along a second direction. Each first beam includes a first support portion, an intermediate connecting portion, and a second support portion connected sequentially along the second direction. A second beam is connected between the two first support portions opposite each other along the first direction, and another second beam is connected between the two second support portions opposite each other along the first direction. Fork through holes are provided in each first support portion and each second support portion. The fork through holes in the first support portion define a first fork passage, and the fork through holes in the second support portion define a second fork passage. The first fork passage and the second fork passage extend in the same direction.

[0080] The base, formed by the interconnection of two first beams and two second beams to create a frame structure, helps reduce the weight of the base, thereby contributing to the lightweight design of the energy storage cabinet and facilitating handling. In addition, the first and second support portions of each first beam are the main support structures for the cabinet body. Fork openings are provided in the first and second support portions, and the fork openings define the fork passage extending along the first direction. This helps improve the stability of handling while further reducing the weight of each first beam, thus making the energy storage cabinet even lighter.

[0081] The energy storage cabinet of this disclosure can be applied to new energy power plants, smart grids, electric vehicle charging piles and other fields, as well as industrial, residential, commercial building and other fields, communication base stations and data centers, transportation facilities and other fields.

[0082] The energy storage cabinet 100 of the present disclosure will now be described in detail with reference to Figures 1 to 6.

[0083] The energy storage cabinet 100 of this embodiment includes: a cabinet body 10 and a base 20 supporting the cabinet body 10. The cabinet body 10 has a receiving space, in which a battery 30 is stored. The base 20 includes two first beams 24 opposite each other along a first direction X and two second beams 23 opposite each other along a second direction Y. The first direction X is perpendicular to the second direction Y. Each first beam 24 includes a first support portion 241, an intermediate connecting portion 242 and a second support portion 243 connected sequentially along the second direction Y. A second beam 23 is connected between the support portions 241, and another second beam 23 is connected between two second support portions 243 that are opposite each other along the first direction X. Each first support portion 241 and each second support portion 243 is provided with a fork through hole 21. The fork through hole 21 provided in the first support portion 241 defines a first fork passage 211, and the fork through hole 21 provided in the second support portion 243 defines a second fork passage 212. The first fork passage 211 and the second fork passage 212 extend in the same direction.

[0084] The cabinet 10 provides storage space for components such as the battery 30, serving a protective function. In some embodiments, a bracket for supporting the battery 30 is provided in the storage space. The battery 30 located in the storage space can be the battery described above, which will not be repeated here. The storage space may also house electronic control components, cooling equipment, etc.

[0085] The energy storage cabinet 100 is typically connected to the power grid, storing electrical energy from the grid as chemical energy in a battery. Alternatively, the energy storage cabinet 100 can be connected to the power grid via an inverter, or via a transformer.

[0086] The cabinet 10 may be provided with an openable and closable cabinet door. For example, the cabinet door may be pivotally connected to the cabinet 10.

[0087] The cabinet 10 can be equipped with a power supply interface with a charging port. When energy storage is needed, the charging port is connected to the power grid to charge the battery 30. When power is needed, the power supply interface is connected to the load to supply power to the load. The power supply interface and the load can always be connected and powered on according to control. Alternatively, the power supply interface can be connected to the load only when charging is needed and powered on according to control.

[0088] The cabinet 10 can have various shapes, such as cuboid or cylindrical. For example, the cabinet 10 can be cuboid.

[0089] The base 20 is used to support the cabinet 10. The base 20 and the cabinet 10 can be separate or connected to each other. For example, the bottom of the cabinet 10 is fixedly connected to the base 20, thereby reducing the risk of the cabinet tipping over from the base 20.

[0090] The base 20 can be square, round, or other shapes, as long as it provides stable support for the cabinet 10; there are no particular restrictions on its shape. For example, the base 20 can be square. Structural reinforcements can be added to the square base 20 as needed.

[0091] The base 20 is provided with a fork through hole 21 for forklift forks to pass through. The shape of the fork through hole 21 can be adapted to the shape of the fork. For example, the fork can be the fork of a pallet truck or a forklift.

[0092] A fork through-hole 21 can be formed on the side of the base 20 for inserting forks, and the orientation of this side is generally consistent with the direction in which the forks enter the fork through-hole 21. In a specific embodiment, the side of the cabinet 10 with the cabinet door is designated as the front of the cabinet 10, the side opposite to the front is designated as the back of the cabinet, and the two sides located between the front and back are designated as the left and right sides; the base 20 has four sides, which are located on the same side as the aforementioned front, back, and left and right sides; the forks can be inserted from any of the four sides.

[0093] In some embodiments, as shown in Figures 2 to 5, the base 20 includes two first beams 24 opposite each other along a first direction X and two second beams 23 opposite each other along a second direction Y. The first direction X is perpendicular to the second direction Y. Each first beam 24 includes a first support portion 241, an intermediate connecting portion 242 and a second support portion 243 connected sequentially along the second direction Y. A second beam 23 is connected between the two first support portions 241 opposite each other along the first direction X, and another second beam 23 is connected between the two second support portions 243 opposite each other along the first direction X. Fork through holes 21 are respectively provided in each first support portion 241 and each second support portion 243. The fork through holes 21 respectively provided in the first support portion 241 define a first fork passage 211, and the fork through holes 21 respectively provided in the second support portion 243 define a second fork passage 212. The first fork passage 211 and the second fork passage 212 extend in the same direction.

[0094] The base 20 includes two first beams 24 and two second beams 23, which are connected to form a frame structure, contributing to weight reduction. For example, the first support portion 241, intermediate connecting portion 242, and second support portion 243 of each first beam 24 are sequentially connected along a second direction Y. Exemplarily, the connection method includes welding; the two ends of one second beam 23 along the first direction X can be welded to the two opposite first support portions 241, and the two ends of another second beam 23 along the first direction X can be welded to the two opposite second support portions 243.

[0095] The cabinet 10 is supported by at least the first support 241 and the second support 243. For example, the bottom of the cabinet 10 is welded to the first support 241 and the second support 243. Of course, the cabinet 10 and the base 20 can also be connected to each other in a detachable manner.

[0096] In some embodiments, as shown in FIG2, the first support portion 241 is formed into a box shape with an opening by a plurality of support walls. Specifically, it includes support walls that are opposite each other along a first direction X, support walls that are opposite each other along a second direction Y, and support walls that are opposite each other along a third direction Z. However, the support arms avoid the location that forms the fork passage. The second support portion 243 may adopt a similar structure to the first support portion 241, and repeated descriptions are omitted here.

[0097] Furthermore, a second beam 23 is connected between two first support portions 241 opposite each other along the first direction X. One end of the second beam 23 is connected to the support wall of one first support portion 241, and the other end of the second beam 23 is connected to the support wall of the other first support portion 241. For example, the periphery of the second beam 23 is welded to the wall surface of the aforementioned support wall.

[0098] Fork through holes 21 are provided in the first support portion 241 and the second support portion 243. The fork through hole 21 in the first support portion 241 defines a first fork passage 211, and the fork through hole 21 in the second support portion 243 defines a second fork passage 212. The first fork passage 211 and the second fork passage 212 extend in the same direction. Alternatively, the first fork passage 211 and the second fork passage 212 can extend along a second direction Y, or as shown in Figure 2, the first fork passage 211 and the second fork passage 212 can extend along a first direction X. In addition, the first fork passage 211 extends from one first support portion 241 to pass through the other first support portion 241; similarly, the second fork passage 212 extends from one second support portion 243 to pass through the other second support portion 243.

[0099] As an example, when the energy storage cabinet 100 is fully charged at the grid end, the grid interface is disconnected, and the energy storage cabinet 100 is moved directly to the target location by inserting the forks of a forklift into the first fork passage 211 and the second fork passage 212.

[0100] The base 20, which forms a frame structure by connecting two first beams 24 and two second beams 23, can reduce the weight of the base compared with the one-piece plate base in the related art, thereby helping to make the energy storage cabinet lighter and easier to transport. Since the first support part 241 and the second support part 243 are the main components that support the cabinet body 10, the first support part 241 and the second support part 243 are respectively provided with fork through holes for fork insertion, and the fork through holes define the fork passage extending along the first direction, which also helps to improve the reliability of support and the stability of handling.

[0101] In some embodiments, referring to FIG3, along the first direction X, the width W1 of the first support portion 241 and the width W1 of the second support portion 243 are both greater than the width W2 of the intermediate connecting portion 242.

[0102] Since the first support portion 241 and the second support portion 243 are the main components supporting the cabinet 10, and are the main force-bearing components supporting the base 20 when the forklift moves the energy storage cabinet 100, the width W1 of the first support portion 241 and the width W1 of the second support portion 243 are both greater than the width W2 of the intermediate connecting portion 242. This strengthens the first support portion 241 and the second support portion 243, thereby improving the reliability of supporting the cabinet and the forklift supporting the base 20. Furthermore, by appropriately reducing the width W2 of the intermediate connecting portion 242, the weight of the intermediate connecting portion 242 can be reduced without affecting its supporting function, thus contributing to the lightweighting of the base 20 and even the entire energy storage cabinet 100.

[0103] In some embodiments, along the first direction X, the width W1 of the first support portion 241 and the second support portion 243 is the same, and the width W2 of the intermediate connecting portion 242 accounts for more than 50% and no more than 100% of the width W1 of the first support portion 241 or the second support portion 243.

[0104] For example, W2 / W1 can be 50%, 60%, 70%, 75%, 80%, 90%, or 100%. W2 / W1 is not limited to the ratios listed above, and can also be other ratios within the range of 50% to 100%.

[0105] The ratio of the width of the intermediate connecting part 242 to the width of the first support part 241 or the second support part 243 is within a suitable range, which can ensure the support strength of the base 20 and meet the requirements of lightweighting.

[0106] In some embodiments, referring to FIG2, the length dimension L1 of the first support portion 241 and the second support portion 243 along the second direction Y is greater than the beam width dimension L2 of the second beam 23 along the second direction Y.

[0107] The larger length L1 of the first support portion 241 and the second support portion 243 strengthens their rigidity, thereby improving the reliability of the support cabinet and the fork support base 20. By appropriately reducing the beam width L2 of the second beam 23, its weight can be reduced, contributing to the lightweighting of the base 20 and the entire energy storage cabinet 100. Furthermore, a larger fork opening accommodates various fork sizes, allowing for stable handling by forklifts even with a heavy energy storage cabinet.

[0108] In some embodiments, referring to FIG2, along the opening length direction (e.g., the second direction Y) of the fork through hole 21, the opening length W3 of the fork through hole 21 provided in the first support portion 241 accounts for more than 50% of the length dimension L1 of the first support portion 241, wherein the opening length direction is perpendicular to the extension direction of the first fork passage 211 or the second fork passage 212; and / or, along the opening length direction (e.g., the second direction Y) of the fork through hole 21, the opening length W5 of the fork through hole 21 provided in the second support portion 243 accounts for more than 50% of the length dimension L1 of the second support portion 243.

[0109] For example, W3 / L1 or W5 / L1 can be 50%, 60%, 70%, 75%, 80%, 90%, 95%, but less than 100%, because the first support 241 is connected to the second beam 23 next to the fork through hole 21, and the fork passage needs to avoid the second beam 23.

[0110] The length L1 of the first support portion 241 and the second support portion 243 mentioned above can be the same or different.

[0111] The ratio of the opening length of the fork through hole 21 to the length of the support part is within a suitable range, which can balance the strength of the support and the weight reduction.

[0112] In some embodiments, referring to FIG4, along the third direction Z, each first support portion 241 and each second support portion 243 have the same thickness H1, and the thickness H2 of the intermediate connecting portion 242 is less than the thickness H2 of the first support portion 241 or the second support portion 243.

[0113] The thickness H1 of the first support part 241 and the second support part 243 is larger, which can strengthen the strength of the first support part 241 and the second support part 243, thereby improving the reliability of the support cabinet and the fork support base 20. By appropriately reducing the thickness H2 of the non-load-bearing intermediate connection part 242, the weight of the intermediate connection part 242 can be reduced, which helps to lighten the base 20 and even the entire energy storage cabinet 100.

[0114] In some embodiments, as shown in Figures 2 and 6, the cross-sections of each second beam 23 and each intermediate connecting portion 242 are rectangular with an opening on one side. Along the first direction X, the two intermediate connecting portions 242 are arranged with their openings facing each other in the cross-section, and along the second direction Y, the two second beams 23 are arranged with their openings facing each other in the cross-section. Here, Figure 6 only shows the cross-sectional shape of the second beam 23.

[0115] Referring to Figures 2 and 6, the cross-sections of each second beam 23 and each intermediate connecting part 242 are rectangular with an opening on one side, making each second beam 23 and intermediate connecting part 242 hollow, thereby reducing the weight of the base 20 and contributing to the lightweighting of the energy storage cabinet 100. The openings 23a of each second beam are opposite each other, and the openings 242a of each intermediate connecting part are opposite each other, so that the openings 242a of the intermediate connecting part and the openings 23a of the second beam face the inside of the base 20, while the outer surfaces of the intermediate connecting parts 242 and the outer surfaces of the first beam 24 are closed surfaces, which can prevent liquids, dust and other debris from entering each second beam 23 and each intermediate connecting part 242, thereby improving the reliability of the base 20.

[0116] In some embodiments, the energy storage cabinet 100 further includes: a first protective member 251, which closes the openings at both ends of the first fork passage 211 and is detachably installed on each of the first support portions 241; and a second protective member 252, which closes the openings at both ends of the second fork passage 212 and is detachably installed on each of the second support portions 243.

[0117] The second protective member 252 shown in Figure 2 will be used as an example for explanation. The second protective member 252 closes the openings at both ends of the second fork passage 212 formed in the second support portion 243 in the first direction X. Exemplarily, the second protective member 252 is connected to the second support portion 243 by screws. In another example, as shown in Figure 2, one end of the second protective member 252 is connected to the second support portion 243 by a screw, and the other end is connected to the intermediate connecting portion 242 by a screw. The first protective member 251 can adopt the same arrangement and connection method, which will not be described again here. Additionally, in Figure 2, one of the first protective members 251 is removed.

[0118] When the energy storage cabinet 100 needs to be moved, the first protective member 251 and the second protective member 252 can be removed from each of the first support parts 241 and each of the second support parts 243 respectively, so that the openings at both ends of the first fork passage 211 and the second fork passage 212 can be opened, so that the forks can be inserted into the first fork passage 211 and the second fork passage 212. When the energy storage cabinet 100 does not need to be moved, the first protective member 251 and the second protective member 252 can be installed on each of the first support parts 241 and each of the second support parts 243 respectively, closing the openings at both ends of the first fork passage 211 and the second fork passage 212, thereby preventing liquids, dust and other debris from entering the first fork passage 211 and the second fork passage 212.

[0119] This reduces the risk of liquids, dust, small animals, or other debris entering the first fork passage 211 and the second fork passage 212.

[0120] For example, the first protective component 251 and the second protective component 252 can be detachably connected by means of bolt connection, snap-fit, adhesive, magnetic attraction, etc.

[0121] In some embodiments, the first protective member 251 comprises a metal sheet and a plastic sheet; and / or, the second protective member 252 comprises a metal sheet and a plastic sheet. The metal sheet may be an aluminum sheet, an aluminum alloy sheet, a stainless steel sheet, etc. The plastic sheet may be a plastic-steel sheet, etc. For example, the first protective member 251 and the second protective member 252 may be skins.

[0122] The first protective component 251 and the second protective component 252 are made of metal sheets and plastic sheets, which can prevent debris from entering the fork openings while also reducing weight, thus contributing to the lightweighting of the base 20 and even the entire energy storage cabinet 100.

[0123] The following describes a specific example of an embodiment of this disclosure.

[0124] Referring to Figures 1 to 6, the energy storage cabinet 100 of this embodiment includes: a cabinet body 10 and a base 20 supporting the cabinet body 10. The cabinet body 10 has a receiving space, and the receiving space houses the battery 30.

[0125] The base 20 includes two first beams 24 opposite each other along a first direction X and two second beams 23 opposite each other along a second direction Y. The first direction X is perpendicular to the second direction Y. Each first beam 24 includes a first support portion 241, an intermediate connecting portion 242 and a second support portion 243 connected sequentially along the second direction Y. A second beam 23 is welded between the two first support portions 241 opposite each other along the first direction X, and another second beam 23 is welded between the two second support portions 243 opposite each other along the first direction X. Fork through holes 21 are respectively provided in each first support portion 241 and each second support portion 243. The fork through holes 21 respectively provided in the first support portion 241 define a first fork passage 211, and the fork through holes 21 respectively provided in the second support portion 243 define a second fork passage 212. The first fork passage 211 and the second fork passage 212 extend along the first direction X.

[0126] Along the first direction X, the width W1 of the first support portion 241 and the width W1 of the second support portion 243 are both greater than the width W2 of the intermediate connecting portion 242. The length L1 of the first support portion 241 and the second support portion 243 along the second direction Y is greater than the beam width L2 of the second beam 23 along the second direction Y. Along the opening length direction of the fork through hole 21 (e.g., the second direction Y), the opening length W3 of the fork through hole 21 provided in the first support portion 241 accounts for more than 50% of the length L1 of the first support portion 241, wherein the opening length direction is perpendicular to the extension direction of the first fork passage 211 or the second fork passage 212; and / or, along the opening length direction of the fork through hole 21 (e.g., the second direction Y), the opening length W5 of the fork through hole 21 provided in the second support portion 243 accounts for more than 50% of the length L1 of the second support portion 243. Referring to Figure 4, along the third direction Z, each first support portion 241 and each second support portion 243 has the same thickness H1, and the thickness H2 of the intermediate connecting portion 242 is less than the thickness H2 of the first support portion 241 or the second support portion 243. The cross-section of each second beam 23 and each intermediate connecting portion 242 is rectangular with an opening on one side. Along the first direction X, the two intermediate connecting portions 242 are arranged with their openings facing each other in the cross-section, and along the second direction Y, the two second beams 23 are arranged with their openings facing each other in the cross-section.

[0127] The base 20 can be made of metal, alloy, etc., such as a steel base or an aluminum alloy base.

[0128] The above embodiments are merely illustrative of the technical solutions of this disclosure and are not intended to limit it. Although this disclosure 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 disclosure, and all should be covered within the scope of this disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of this disclosure.

Claims

1. An energy storage cabinet, comprising: The cabinet and the base supporting the cabinet, the cabinet having a storage space for storing batteries. The base includes two first beams opposite each other along a first direction and two second beams opposite each other along a second direction, wherein the first direction is perpendicular to the second direction. Each of the first beams includes a first support portion, an intermediate connecting portion, and a second support portion connected sequentially along the second direction. A second beam is connected between two first support portions that are opposite each other along the first direction, and another second beam is connected between two second support portions that are opposite each other along the first direction. Each of the first support portions and each of the second support portions is provided with a fork through hole. The fork through hole provided in the first support portion defines a first fork passage, and the fork through hole provided in the second support portion defines a second fork passage. The first fork passage and the second fork passage extend in the same direction.

2. The energy storage cabinet according to claim 1, wherein, The width of the first support portion and the second support portion along the first direction is greater than the width of the intermediate connecting portion along the first direction.

3. The energy storage cabinet according to claim 1 or 2, wherein, The length of the first support and the second support along the second direction is greater than the width of the second beam along the second direction.

4. The energy storage cabinet according to claim 3, wherein, Along the length direction of the fork through hole, the opening length of the fork through hole accounts for more than 50% of the length dimension of the first support portion, wherein the opening length direction is perpendicular to the extension direction of the first fork passage or the second fork passage; and / or, Along the length of the fork through hole, the opening length of the fork through hole accounts for more than 50% of the size of the second support portion.

5. The energy storage cabinet according to claim 3 or 4, wherein, Along the first direction, the width of the first support portion and the second support portion are the same, and the width of the intermediate connecting portion is more than 50% and no more than 100% of the width of the first support portion or the second support portion.

6. The energy storage cabinet according to any one of claims 3 to 5, wherein, Along a third direction, each of the first support portions and each of the second support portions have the same thickness. The thickness of the intermediate connecting part is less than the thickness of the first support part or the second support part.

7. The energy storage cabinet according to any one of claims 3 to 6, wherein, The cross-section of each of the second beams and each of the intermediate connecting portions is rectangular with an opening on one side. Along the first direction, the two intermediate connecting portions are arranged with their openings facing each other in cross-section. Along the second direction, the two second beams are arranged with their openings facing each other in the cross-section.

8. The energy storage cabinet according to any one of claims 1 to 7, wherein, The energy storage cabinet also includes: The first protective component seals the openings at both ends of the first fork passage and is detachably installed on each of the first support parts; The second protective component seals the openings at both ends of the second fork passage and is detachably installed on each of the second supports.

9. The energy storage cabinet according to claim 8, wherein, The first protective component includes a metal sheet, a plastic sheet; and / or, The second protective component includes a metal sheet and a plastic sheet.

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