Battery cluster and energy storage container

Abstract

This utility model belongs to the field of energy storage technology and discloses a battery cluster and an energy storage container. The battery cluster includes multiple stacked battery packs, each including a base plate, end plates, and multiple individual cells. Two end plates are parallel and spaced apart on the base plate. Multiple individual cells are stacked sequentially between the two end plates along a horizontal first direction. Each individual cell is thermally connected to the base plate. The end plates on the same side of two adjacent battery packs are fixedly connected by a connecting structure. The base plate is in thermal contact with the battery pack located on one side of the base plate and adjacent to it. The energy storage container includes a container body and multiple battery clusters, with the battery clusters housed within the container body. In this utility model, the multiple individual cells of the battery packs are directly connected to the base plate, simplifying the structure and effectively improving energy density. The fixed connection of the end plates on the same side of two adjacent battery packs by a connecting structure improves the structural strength of adjacent battery packs, thereby increasing their service life.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a battery cluster and an energy storage container. Background Technology

[0002] Against the backdrop of the rapid development of the new energy industry, energy storage systems, as key equipment for balancing energy supply and demand and improving energy utilization efficiency, are finding increasingly widespread applications. Among them, energy storage containers have become the mainstream choice for large-scale energy storage projects due to their advantages such as high integration, flexible deployment, and strong spatial adaptability. Existing energy storage containers typically employ a design that arranges multiple battery clusters in parallel to achieve efficient energy storage and management. Each battery cluster, as the core energy storage unit of the energy storage system, mainly consists of a cluster frame and multiple battery packs mounted on the frame. The battery packs are fixed and positioned by the cluster frame, thus forming an orderly array of energy storage modules.

[0003] However, in practical applications, this battery cluster structure has significant technical shortcomings. Specifically, due to limitations in the battery pack's external dimensions, the installation and positioning of the cluster frame, and the assembly process, gaps inevitably form between adjacent battery packs. These gaps, on the one hand, make the overall structure of the battery cluster more complex, increasing the difficulty of cluster frame design and requiring additional consideration of protection and insulation in the gap areas, thus raising manufacturing and assembly costs. On the other hand, numerous gaps occupy valuable internal space within the energy storage container, making it difficult to increase the density of battery packs within the container. This severely restricts the space utilization rate of the energy storage container, preventing the overall energy storage capacity of the energy storage system from reaching its optimal level. This hinders the development of energy storage containers towards higher energy density and makes it difficult to meet the current demand for miniaturized, high-capacity energy storage equipment in energy storage projects.

[0004] Therefore, there is an urgent need for a battery cluster and energy storage container to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a battery cluster and energy storage container, which aims to solve the problems of low space utilization and complex installation structure of existing battery clusters. The battery cluster and energy storage container can effectively improve space utilization and energy density, and has a simple structure, easy assembly, and high structural strength and service life.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery cluster includes multiple stacked battery packs. Each battery pack includes a base plate, end plates, and multiple individual cells. Two end plates are arranged in a row and spaced apart from the base plate. Multiple individual cells are stacked sequentially between the two end plates along a first horizontal direction. Each individual cell is thermally connected to the base plate. The end plates on the same side of two adjacent battery packs are fixedly connected by a connecting structure. The base plate is in thermal contact with the battery pack located below and adjacent to the base plate.

[0008] An energy storage container includes a container body and a plurality of battery clusters as described above, wherein the plurality of battery clusters are disposed within the container body.

[0009] The beneficial effects of this utility model are:

[0010] The battery cluster provided by this utility model has multiple individual cells directly connected to the base plate, and the multiple individual cells are arranged sequentially between the two end plates along the first horizontal direction, which simplifies the structure and effectively improves the energy density. The battery cluster includes multiple stacked battery packs, and the end plates on the same side of two adjacent battery packs are fixedly connected by a connecting structure. The setting of the connecting structure improves the structural strength of adjacent battery packs, thereby improving the service life. The individual cells of each battery pack are thermally connected to the base plate, and the base plate is in thermal contact with the battery pack located on one side of the base plate and adjacent to the base plate. One base plate can be used to cool the individual cells of two battery packs at the same time, which effectively improves the cooling efficiency.

[0011] The energy storage container provided by this utility model includes a container body and multiple battery clusters. The multiple battery clusters are arranged inside the container body. The battery clusters have a simple structure, are easy to assemble, and have a high energy density. Attached Figure Description

[0012] Figure 1 This is a three-dimensional view of an energy storage container from one perspective, provided in an embodiment of this utility model.

[0013] Figure 2 This is a three-dimensional view of the energy storage container from another perspective provided by an embodiment of this utility model;

[0014] Figure 3 This is a schematic diagram of the battery pack provided in an embodiment of the present invention;

[0015] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0016] Figure 5 This is a schematic diagram of the structure of the exhaust pipe provided in this embodiment of the utility model;

[0017] Figure 6This is a schematic diagram of d1 and d2 provided in an embodiment of this utility model;

[0018] Figure 7 This is a schematic diagram of L1, d2, h1 and d4 provided in the embodiment of this utility model.

[0019] In the picture:

[0020] 10. Battery pack;

[0021] 100, Base plate; 110, Liquid cooling channel; 200, End plate; 210, Smoke exhaust chamber; 300, Single cell; 400, Aluminum busbar; 500, Smoke exhaust pipe; 510, Smoke exhaust hole; 600, Connecting structure; 700, Smoke baffle; 800, Connecting structure; 810, Column; 900, Second thermal pad. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0026] A battery pack typically includes battery cells (composed of multiple individual cells connected in series or parallel), a battery management system (BMS), a thermal management system, electrical connection systems (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, support structures, etc.), and protective parts. A battery cluster consists of multiple battery cells connected in series.

[0027] The protective components of a battery pack include the exhaust pipe, a core component of the protective system. Its primary objective is to achieve targeted heat dissipation, toxic gas control, and prevention of spread in the extreme risk scenario of thermal runaway. It is a key safety design component that transforms the battery pack from passive protection to active pressure relief. Heat dissipation refers to targeted pressure relief, guiding high-temperature fumes away from the danger zone to prevent battery pack explosion and reduce secondary injuries. Toxic gas control refers to controlling the diffusion of toxic gases to reduce the risk of poisoning. Preventing spread refers to assisting in delaying the spread of thermal runaway and slowing the temperature rise rate of surrounding cells that are not yet in thermal runaway.

[0028] The structural components of a battery pack include a base plate, which is the main load-bearing component of the battery pack. It is typically installed at the bottom of the battery pack and is used to support and secure components such as the battery cells, battery management system, and cooling system. The base plate can be made of high-strength materials such as aluminum alloy, steel, or stainless steel. It can be rectangular, circular, polygonal, or a plate-like structure; there are no specific limitations, and its dimensions are determined by the number of battery cells.

[0029] The structural components of the battery pack also include end plates, which are located at at least one end of the battery cell formed by multiple individual cells. These end plates counteract the forces generated by the expansion and deformation of the individual cells, preventing the overall size of the battery cell from increasing. The end plates can be made of aluminum, steel, other metals, or composite materials of metals and non-metals. Alternatively, they can be made of engineering plastics, fiberglass, or carbon fiber. Aluminum end plates can be manufactured by sheet extrusion and / or machine tool processing. The end plates are flat plates with a certain thickness, typically 2-25 mm, to meet the strength requirements of the battery pack. If the end plate thickness is too small, the structural strength will not be sufficient; if the thickness is too large, the energy density of the battery pack will be affected.

[0030] like Figures 1 to 7As shown, this embodiment provides a battery cluster including multiple stacked battery packs 10. Each battery pack 10 includes a base plate 100, end plates 200, and multiple individual battery cells 300. Two end plates 200 are parallel and spaced apart from the base plate 100. Multiple individual battery cells 300 are stacked sequentially between the two end plates 200 along a horizontal first direction. Each individual battery cell 300 is thermally connected to the base plate 100. The end plates 200 on the same side of two adjacent battery packs 10 are fixedly connected by a connecting structure 800. The base plate 10 is in thermal contact with the battery pack 10 located on one side of the base plate 100 and adjacent to the base plate 100.

[0031] The battery cluster provided by this utility model has multiple individual cells 300 of the battery pack 10 directly connected to the base plate 100, and the multiple individual cells 300 are arranged sequentially between the two end plates 200 along the first horizontal direction, which simplifies the structure and effectively improves the energy density. The battery cluster includes multiple stacked battery packs 10, and the end plates 200 on the same side of two adjacent battery packs 10 are fixedly connected by a connecting structure 800. The setting of the connecting structure 800 improves the structural strength of adjacent battery packs 10, thereby improving the service life. The individual cells 300 of each battery pack 10 are thermally connected to the base plate 100, and the base plate 100 is in thermal contact with the battery pack 10 located on one side of the base plate 100 and adjacent to the base plate 100. One base plate 100 can be used to cool the individual cells 300 of two battery packs 10 at the same time, which effectively improves the cooling efficiency.

[0032] Preferably, the two end plates 200 form an end plate pair, and multiple individual batteries 300 form a battery unit. The battery unit is disposed between the two end plates 200 of the end plate pair and forms a battery module. Two battery modules are disposed on the base plate 100, and the two battery modules are spaced apart along a second horizontal direction. An exhaust pipe 500 is disposed between adjacent battery modules. The exhaust pipe 500 has a communication structure 600 that communicates with the explosion-proof valve of the individual battery 300, and the explosion-proof valve surface of the individual battery 300 of one battery module is opposite to the explosion-proof valve surface of the individual battery 300 of the other battery module. This arrangement facilitates the discharge of high-temperature smoke generated by the individual battery 300 in case of thermal runaway, avoiding the spread of thermal runaway. By placing the exhaust pipe 500 between adjacent end plates 200, no other dedicated installation space is required, improving the space utilization of the battery pack 10, while achieving thermoelectric separation.

[0033] In this embodiment, the connecting structure 600 is configured as a connecting groove or a connecting hole. The exhaust pipe 500 and the explosion-proof valve are directly connected through the connecting groove or connecting hole, forming a straight channel from the explosion-proof valve to the connecting structure 600 to the exhaust pipe 500. After the flue gas is discharged from the explosion-proof valve, it can directly enter the exhaust pipe 500, resulting in a faster pressure relief speed. Furthermore, the connecting groove or connecting hole has a simple structure, high reliability, reduces the risk of leakage, and is convenient for assembly and maintenance.

[0034] Optionally, a sealing structure (such as a gasket) is provided between the exhaust pipe 500 and the battery cell. During operation, the exhaust pipe 500 may come into contact with condensate, cleaning liquids, or dust in the environment. The sealing structure fills the gap between the exhaust pipe 500 and the battery cell through compression deformation, preventing moisture from entering the battery and corroding the electrodes or causing a short circuit. Secondly, the sealing structure prevents leakage of flue gas during conduction. Furthermore, when the battery pack 10 is subjected to external impact, the sealing structure can buffer the impact force through deformation, preventing the exhaust pipe 500 from shifting or breaking due to the impact, thereby protecting the battery cell from damage.

[0035] In one possible implementation, the exhaust pipe 500 is closed at both ends, and the end plate 200 has an exhaust chamber 210 communicating with the exhaust pipe 500. High-temperature flue gas generated by the thermally runaway single-cell battery 300 is discharged sequentially through the exhaust pipe 500 and the end plate 200, and guided by the end plate 200 to an external safe area, preventing flue gas backflow and forming a directional exhaust channel. Figure 4 As shown, the smoke exhaust chamber 210 in this embodiment is configured as a long strip-shaped cavity, which extends along the length direction of the end plate 200 and penetrates both ends of the end plate 200. One end of the smoke exhaust chamber 210 is connected to the smoke exhaust pipe 500, and the other end can be connected to an external component for collecting smoke.

[0036] Optionally, the exhaust pipe 500 can be configured as a hollow block structure, with a smoke baffle 700 installed inside the cavity. The smoke baffle 700 divides the cavity into two symmetrically arranged sub-cavities, each corresponding to one of the two battery modules. The separate arrangement of the two battery modules and the two sub-cavities prevents thermal runaway in one battery module from affecting the other, avoiding the propagation of thermal runaway and improving reliability.

[0037] In another possible implementation, exhaust holes 510 can be provided on both ends of the exhaust pipe 500 along the first horizontal direction, or exhaust holes 510 can be provided on one end of the exhaust pipe 500 along the first horizontal direction. Exhaust pipes can be provided at the exhaust holes 510 to discharge the high-temperature flue gas in the exhaust pipe 500 to the outside. This design is simple and reduces processing costs.

[0038] Optionally, the exhaust port 510 can be circular or square. Circular ports have smooth, continuous walls without sharp edges or abrupt changes, preventing eddies from forming in the high-temperature flue gas during flow, resulting in high exhaust efficiency. Circular ports also exhibit uniform stress distribution on their walls, making them less prone to deformation at high temperatures and easier to manufacture. Square ports have a simple structure and are convenient to process. Preferably, multiple exhaust ports 510 can be provided, arranged in an array to meet the requirements of large-volume exhaust. Figure 5 As shown, the smoke exhaust hole 510 in this embodiment is circular. In other embodiments, the smoke exhaust hole 510 may be square, depending on the requirements.

[0039] Optionally, in the direction perpendicular to the base plate 100, the height of the individual cell 300 is h1, in mm, and the range of h1 is 100 (mm) ≤ h1 (mm) ≤ 600 (mm). This arrangement maximizes the double-sided cooling efficiency of the base plate 100 and results in a more uniform temperature of the individual cell 300. For example, the range of h1 can be any value among 100 (mm), 110 (mm), 120 (mm), 150 (mm), 200 (mm), 350 (mm), 450 (mm), 550 (mm), 600 (mm) or 100 (mm) - 600 (mm).

[0040] Optionally, the width of the gap between the two battery modules is d1 (mm), and the length of the end plate 200 is d2 (mm). The range is like If the value is too small, the exhaust pipe 500 will be too small, causing the high-temperature flue gas generated by the thermally runaway individual battery 300 to be unable to be discharged quickly and depressurized in time. This can easily lead to the exhaust pipe 500 rupturing, resulting in a longer flue gas retention time and exacerbating the spread of thermal runaway. When the battery undergoes thermal runaway, solid impurities generated by the electrolyte fuel will accompany the flue gas into the exhaust pipe 500. If the exhaust pipe 500 is too small, these impurities can easily accumulate and block the pipe, preventing the subsequent flue gas from being discharged, causing a sharp increase in pressure and directly triggering an explosion. If the value is too large, the exhaust pipe 500 will occupy a large space, reducing the energy density of the battery pack 10 and causing a decrease in exhaust efficiency. It will also increase the weight of the exhaust pipe 500, which does not conform to the trend of lightweight design. For example, The range can be any value among 0.1, 0.15, 0.2, 0.22, 0.3, 0.4, 0.55, 1, or 0.1-1.

[0041] Optionally, the base plate 100 is provided with a liquid cooling channel 110. Batteries generate significant heat during fast charging, high-speed driving, hill climbing, or exposure to high summer temperatures. If this heat cannot be dissipated in time, the battery temperature may exceed a safe threshold. The base plate 100 is tightly attached to the battery cells, and the coolant within the liquid cooling channel 110 directly absorbs the battery heat. The heated coolant is then pumped to the vehicle radiator (or air conditioning condenser) by a circulation pump, where it cools down and flows back to the base plate 100, forming a closed-loop cycle that quickly controls the battery temperature within its optimal operating range. By providing the liquid cooling channel 110, the base plate 100 can function as a liquid cooling plate. The base plate 100 of one battery pack 10 is attached to the side of another battery pack 10 opposite to its own base plate 10. In other words, one base plate 100 can simultaneously cool two battery packs 10, resulting in high cooling efficiency.

[0042] like Figure 3 and Figure 4 As shown, preferably, the liquid cooling channel 110 extends along a first horizontal direction. This arrangement allows the liquid cooling channel 110 to cover the entire length of multiple individual cells 300, and the coolant can flow directly through the heat-generating area of ​​each individual cell 300, enabling simultaneous cooling of multiple individual cells 300 and improving cooling uniformity.

[0043] Optionally, a second thermal conductive layer 900 is provided on the side of the battery cell away from the base plate 100. On the one hand, the second thermal conductive layer 900 can significantly reduce the thermal resistance between the battery cell and the base plate 100 and improve heat dissipation efficiency; on the other hand, the second thermal conductive layer 900 can buffer the pressure of the battery pack 10 located above it and improve structural stability.

[0044] In this embodiment, the second thermally conductive layer 900 is configured as a thermally conductive pad. The thermally conductive pad has a certain degree of flexibility and compressibility, and can tightly adhere to the two contact surfaces under installation pressure, completely filling the gaps and improving the thermal conductivity.

[0045] Optionally, the thickness of the second heat-conducting layer 900 is d3, in mm, and the range of d3 is 0.1 (mm) ≤ d3 (mm) ≤ 5 (mm). If the value of d3 is too large, the height difference between the exhaust pipe 500 and the single battery 300 will be large, resulting in a larger thickness of the heat-conducting structure, occupying a larger volume, and increasing manufacturing costs. If the value of d3 is too small, the thickness of the heat-conducting structure will be too small, resulting in poor heat conduction and poor cooling effect. For example, the range of d3 can be any value among 0.1 (mm), 0.5 (mm), 0.8 (mm), 1.3 (mm), 2 (mm), 2.8 (mm), 3.5 (mm), 4.5 (mm), 5 (mm) or 0.1 (mm) - 5 (mm).

[0046] Optionally, the individual battery 300 and the base plate 100 are directly bonded with thermally conductive adhesive, or indirectly bonded through a first thermally conductive layer. When the individual battery 300 and the base plate 100 are directly bonded with thermally conductive adhesive, the adhesive, after being applied and cured, can completely penetrate and fill the uneven gaps on the surface of the individual battery 300, achieving full-area contact with low contact thermal resistance. This allows the heat generated by the individual battery 300 to be quickly conducted to the base plate 100, avoiding localized high-temperature accumulation and reducing the risk of thermal runaway. When the individual battery 300 and the base plate 100 are indirectly bonded through a first thermally conductive layer, the first thermally conductive layer can be directly attached between the individual battery 300 and the base plate 100. It can be fixed by lightly pressing with bolts or by structural self-pressure, making disassembly and assembly simple. Furthermore, the first thermally conductive layer typically has flexible compression characteristics, which can compensate for gaps on the battery surface through its own deformation, avoiding increased thermal resistance due to insufficient processing precision.

[0047] For example, the thermally conductive adhesive may be a thermally conductive structural adhesive, such as a silicone-based adhesive or an epoxy-based adhesive.

[0048] In this embodiment, the battery pack 10 is provided with a connecting structure 800 on both sides along the first horizontal direction, and the connecting structure 800 is detachably connected to the end plate 200. By providing connecting structures 800 on both sides of the multiple battery packs 10, the fixing stability between the multiple battery packs 10 can be improved; the detachable connection between the connecting structure 800 and the end plate 200 improves the convenience of disassembly and assembly.

[0049] In one possible implementation, the connection structure 800 includes a plurality of parallel and spaced-apart columns 810 extending along the stacking direction of the plurality of battery packs 10. The end plate 200 is detachably connected to the columns 810. The column 810 provides a simple and easy-to-manufacture structure for fixing the plurality of battery packs 10 together, and its low manufacturing cost makes it convenient to operate. For example, the column 810 and the end plate 200 can be connected by threaded fittings. Threaded fittings improve the connection strength and stability between the column 810 and the end plate 200; secondly, they simplify disassembly and assembly, shortening maintenance time and reducing maintenance costs; and thirdly, the low manufacturing cost of threaded fittings reduces the overall design cost.

[0050] In this embodiment, as Figure 2As shown, the connection structure 800 includes two parallel and spaced-apart columns 810, and the battery cluster includes three battery packs 10 stacked vertically. The columns 810 connect and fix the end plates 200 on the same side of the three battery packs 10. In other embodiments, the number of columns 810 and the number of battery packs 10 can be set to other values, such as three columns 810 and four battery packs 10, as needed. Optionally, the columns 810 can be a single-piece structure or composed of multiple segments of columns. For example, when there are four battery packs 10, the end plates 200 of adjacent battery packs 10 can be connected using separate columns.

[0051] Preferably, the distance between adjacent columns 810 is L1 (mm), and the length of end plate 200 is d2 (mm). The range is like If the value is too large, the distance between adjacent columns 810 will be too large, resulting in insufficient support and fixing force of the columns 810, which may easily lead to damage to the battery cluster; if If the value is too small, a larger number of posts 810 are needed to fix multiple battery packs 10, resulting in higher manufacturing and processing costs. For example, The range can be any value from 0.01, 0.015, 0.2, 0.22, 0.3, 0.4, 0.55, 0.9 or 0.01-0.9.

[0052] Optionally, 0.1 (mm) ≤ L1 (mm) ≤ 1000 (mm). If the value of L1 is too large, the distance between adjacent columns 810 will be too large, resulting in insufficient supporting and fixing force of the columns 810; if the value of L1 is too small, a larger number of columns 810 will be needed to fix multiple battery packs 10, increasing processing costs. This setting ensures that adjacent columns 810 have a suitable spacing while reducing the manufacturing cost of the columns 810. For example, the range of L1 can be any value among 0.1 (mm), 20 (mm), 50 (mm), 100 (mm), 200 (mm), 500 (mm), 600 (mm), 800 (mm), 1000 (mm) or 0.1 (mm)-1000 (mm).

[0053] Optionally, the projected area of ​​a single column 810 on a single end plate 200 is s1, in mm. 2 The area of ​​end plate 200 is s2, in mm. 2 , The range is like If the value is too large, the volume of column 810 will be too large, increasing the overall weight; if If the value is too small, the contact area between the column 810 and the end plate 200 will be small, resulting in insufficient connection strength and making the battery cluster prone to damage or deformation. For example, The range can be any value from 0.1, 0.15, 0.2, 0.22, 0.3, 0.4, 0.55, 0.9 or 0.1-0.9.

[0054] For example, 5000 (mm) 2 )≤s1(mm 2 ≤20000 (mm) 2 This avoids making the column 810 too large and ensures that the column 810 and the end plate 200 have a suitable contact area. For example, s1 can be in the range of 5000 (mm²). 2 ), 6000 (mm) 2 ), 7000 (mm) 2 ), 9000 (mm) 2 ), 10000 (mm) 2 ), 15000 (mm) 2 ), 20000 (mm) 2 ) or 5000 (mm) 2 )-20000(mm 2 Any value from ).

[0055] Optionally, 20000 (mm) 2 )≤s2(mm 2 ≤200000 (mm) 2 This allows the end plate 200 to have sufficient structural strength while having sufficient volume. For example, s2 can range from 20000 (mm). 2 ), 26000 (mm) 2 ), 30000 (mm) 2 ), 40000 (mm) 2 ), 80000 (mm) 2 ), 100000 (mm) 2 ), 200000 (mm) 2 ) or 20000 (mm) 2 )-200000(mm 2 Any value from ).

[0056] As a preferred design, the support column 810 is designed with a hollow structure. By designing it with a hollow structure, its own weight can be effectively reduced, thereby reducing the overall weight of the battery cluster, which is in line with the trend of lightweight design.

[0057] Optionally, the distance by which the column 810 protrudes above the topmost battery pack 10 is d4, in mm, and the range of d4 is 1 (mm) ≤ d4 (mm) ≤ 500 (mm). If the value of d4 is too large, the distance by which the column 810 protrudes above the topmost battery pack 10 will be too large, resulting in redundant length, increased weight, and may also cause inconvenience in assembling the top of the column 810 with external components, or interference with external components. Furthermore, the part protruding from the topmost battery pack 10 is susceptible to collisions with external components. The part protruding from the topmost battery pack 10 may serve as a positioning reference for assembling external components; if the value of d4 is too small, it will be inconvenient to assemble with external components. For example, the range of d4 can be any value among 1 (mm), 5 (mm), 8 (mm), 13 (mm), 20 (mm), 100 (mm), 200 (mm), 350 (mm), 500 (mm), or 1 (mm) - 500 (mm).

[0058] Taking the installation of two end plate pairs on the base plate 100 as an example, the assembly process of the battery cluster provided in this embodiment includes: First, the two end plate pairs are installed on the base plate 100 at intervals. Then, the exhaust pipe 500 is installed between the two end plate pairs. Next, multiple individual batteries 300 are fixed between the two end plates 200 of the end plate pairs in sequence. Then, adjacent individual batteries 300 are connected in series and parallel through aluminum busbars 400. Then, the second heat-conducting layer 900 is installed on the side of the individual battery 300 away from the base plate 100 to form a battery pack 10. Next, multiple battery packs 10 are stacked in sequence and fixedly connected by a connecting structure 800 to form a battery cluster.

[0059] This embodiment also provides an energy storage container, including a container body and multiple battery clusters, with the multiple battery clusters disposed inside the container body.

[0060] The energy storage container provided by this utility model has multiple battery clusters installed inside the container. The battery clusters have a simple structure, are easy to assemble, and have a high energy density.

[0061] Optionally, multiple battery clusters are arranged in an array within the mounting cavity of the enclosure. The total capacity of the enclosure can be adjusted by increasing or decreasing the number of battery clusters; maintenance personnel can inspect individual battery clusters without disassembling the entire enclosure. In practice, the multiple battery clusters can also be configured in other suitable arrangements as needed, such as vertical stacking or horizontal arrangement, to meet the requirements.

[0062] Preferably, the connecting structure 800 is detachably connected to the housing. This configuration improves assembly and disassembly efficiency, shortens maintenance time, and reduces maintenance costs. For example, the connecting structure 800 and the housing can be connected via threaded connections.

[0063] In this embodiment, the first end of the column 810 extending along the stacking direction of the plurality of battery packs 10 is connected to the top wall of the mounting cavity of the housing, and the second end of the column 810 extending along the stacking direction of the plurality of battery packs 10 is connected to the side wall of the mounting cavity of the housing. This arrangement can improve the installation stability between the battery packs and the housing.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cluster, characterized by, The battery pack (10) includes multiple stacked battery packs. Each battery pack (10) includes a base plate (100), an end plate (200), and multiple individual cells (300). Two end plates (200) are arranged parallel to each other and spaced apart from the base plate (100). Multiple individual cells (300) are arranged sequentially between the two end plates (200) along a first horizontal direction. Each individual cell (300) is thermally connected to the base plate (100). The end plates (200) on the same side of two adjacent battery packs (10) are fixedly connected by a connecting structure (800). The base plate (100) is in thermal contact with the battery pack (10) located on one side of the base plate (100) and adjacent to the base plate (100).

2. The battery cluster of claim 1, wherein, Two end plates (200) form an end plate pair, and multiple individual batteries (300) form a battery unit. The battery unit is disposed between the two end plates (200) of the end plate pair and forms a battery module. Two battery modules are disposed on the base plate (100) and are spaced apart along a second horizontal direction. An exhaust pipe (500) is disposed between adjacent battery modules. The exhaust pipe (500) is provided with a communication structure (600) that communicates with the explosion-proof valve of the individual battery (300). The surface of the individual battery (300) of one battery module is opposite to the surface of the individual battery (300) of the other battery module.

3. The battery cluster of claim 2, wherein, The exhaust pipe (500) has an exhaust hole (510) on one end face along the first horizontal direction, or the exhaust pipe (500) has exhaust holes (510) on both ends face along the first horizontal direction.

4. The battery cluster of claim 2, wherein, In the direction perpendicular to the base plate (100), the height of the single cell (300) is h1, in mm, and the range of h1 is 100 (mm) ≤ h1 (mm) ≤ 600 (mm).

5. The battery cluster of claim 2, wherein, A second heat-conducting layer (900) is provided on the side of the battery cell away from the base plate (100).

6. The battery cluster of claim 5, wherein, The second thermally conductive layer (900) is configured as a thermally conductive pad.

7. The battery cluster of claim 5, wherein, The thickness of the second thermally conductive layer (900) is d3, in mm, and the range of d3 is 0.1 (mm) ≤ d3 (mm) ≤ 5 (mm).

8. The battery cluster of claim 1, wherein, The individual battery cell (300) is directly bonded to the base plate (100) with thermally conductive adhesive, or indirectly bonded with the base plate through the first thermally conductive layer.

9. The battery cluster of claim 1, wherein, The battery pack (10) is provided with a connection structure (800) on both sides along the first horizontal direction, and the connection structure (800) is detachably connected to the end plate (200).

10. The battery cluster of claim 1, wherein, The connection structure (800) includes a plurality of parallel columns (810) spaced apart along the extension direction of the end plate (200). The columns (810) extend along the stacking direction of the plurality of battery packs (10), and the columns (810) are detachably connected to the end plate (200).

11. The battery cluster according to claim 10, characterized in that, The distance between the adjacent columns (810) is L1, unit: mm, and the length of the end plate (200) is d2, unit: mm, in the range of 12. The battery cluster of claim 11, wherein, 0.1(mm)≤L1(mm)≤1000(mm).

13. The battery cluster according to claim 10, characterized in that, The projection area of the single post (810) on the single end plate (200) is s1, unit: mm 2 The area of the end plate (200) is s2, unit: mm 2 , The range of s1 / s2 is 14. The battery cluster of claim 13, wherein, 5000 (mm 2 ) ≤ s1 (mm 2 ) ≤ 20000 (mm 2 ).

15. The battery cluster according to claim 13, characterized in that, 20000 (mm 2 ) ≤ s2 (mm 2 ) ≤ 200000 (mm 2 ).

16. The battery cluster according to claim 11, characterized in that, The column (810) is designed as a hollow structure.

17. The battery cluster according to claim 11, characterized in that, The distance between the column (810) and the top battery pack (10) is d4, in mm, and the range of d4 is 1 (mm) ≤ d4 (mm) ≤ 500 (mm).

18. An energy storage container, characterized in that, It includes a housing and a plurality of battery clusters as described in any one of claims 1-17, wherein the plurality of battery clusters are disposed within the housing.

19. The energy storage container according to claim 18, characterized in that, Multiple battery clusters are arranged in an array within the mounting cavity of the housing.

20. The energy storage container according to claim 18, characterized in that, The connecting structure (800) is detachably connected to the housing.

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