Energy storage container and energy storage system

Abstract

The utility model relates to the technical field of energy storage, disclose a kind of energy storage container and energy storage system. Wherein energy storage container includes stand and support piece, stand extends along vertical direction, support piece is provided with support part, support part is set along horizontal direction, to be used for supporting battery pack;Support piece is further provided with reinforcing structure, recess is at least partially set in reinforcing structure, and reinforcing structure is at least partially set with support part Angle;Support piece is further provided with recess, stand can be at least partially placed in recess, recess is fixedly connected with stand. The energy storage container of the utility model is more reliable to the support of battery pack, and the space occupied by the connecting position is smaller, thereby making the space of the battery pack that can be set larger. The energy storage system of the utility model is provided with the above-mentioned energy storage container, higher energy density, higher economic benefit, while the structure is more reliable.

Description

Technical Field

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

[0002] An Energy Storage System (ESS) is a system that uses specific technologies to store, convert, and release energy in the form of electricity, heat, and mechanical energy, enabling flexible allocation of energy in time, space, or form. Its core function is to address the spatiotemporal mismatch between energy supply and demand, such as the intermittent output of renewable energy sources (e.g., solar and wind power), peak-valley load differences in the power grid, and emergency power supply needs.

[0003] Energy storage systems that use batteries as the energy storage medium typically include energy storage containers and battery packs. The energy storage container serves as a support structure, housing multiple battery packs. It features high integration, small footprint, and good scalability, making it an important component of distributed energy, smart grids, and the energy internet development within energy storage systems.

[0004] In existing technologies, energy storage containers mostly adopt a frame structure, with support members installed on the columns of the frame structure to support the battery pack. However, due to the large mass of the battery pack and the limited structural strength of the support members, the support members are prone to deformation, resulting in reduced stability and reliability of the support for the battery pack. In addition, since the connection between the support members and the columns occupies internal space of the energy storage container, the space available for installing the battery pack is reduced, thereby reducing the energy density of the energy storage system.

[0005] Therefore, there is an urgent need for an energy storage container and energy storage system to solve the above problems. Utility Model Content

[0006] Based on the above, one of the objectives of this utility model is to provide an energy storage container that provides more reliable support for battery packs and occupies less space at the connection points, thereby allowing for a larger space to be used to install battery packs.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Energy storage containers, including:

[0009] The column and the support member are provided with a support part, which is arranged in a horizontal direction to support the battery pack.

[0010] The support member is further provided with a reinforcing structure, and the reinforcing structure is at least partially arranged at an angle to the support portion;

[0011] The support member is also provided with a groove, which is at least partially provided in the reinforcing structure, and the column can be at least partially placed in the groove, and the groove is fixedly connected to the column.

[0012] The beneficial effects of this utility model are as follows:

[0013] This utility model discloses an energy storage container that can be used to carry battery packs. The container includes vertically extending columns, each with a support member. The support member has a horizontally extending support portion that supports the battery pack. Specifically, the support member has a reinforcing structure at an angle to the support portion, increasing its maximum load-bearing capacity and effectively reducing the possibility of deformation of the support member while supporting the battery pack, thus improving the reliability of the energy storage container's support for the battery pack. Furthermore, the support member also has a groove, at least partially located within the reinforcing structure. When connecting the column and the support member, the column is at least partially located within the groove, and the connection between the groove and the column achieves a fixed connection between the support member and the column. Compared to an L-shaped cross-section support structure, the groove effectively reduces the vertical space occupied by the support member, thereby improving the vertical space utilization of the energy storage container.

[0014] The second objective of this invention is to provide an energy storage system with higher energy density, higher economic efficiency, and more reliable structure.

[0015] To achieve the above objectives, the present invention adopts the following technical solution:

[0016] An energy storage system includes multiple battery packs and an energy storage container as described in any of the above embodiments, wherein the battery packs can be placed in the support.

[0017] The beneficial effects of the above technical solution are as follows:

[0018] The energy storage system of this invention is equipped with the aforementioned energy storage container, with the battery packs mounted on the support portion of the support member, resulting in more stable and reliable support. Simultaneously, the support member is connected to the column via grooves at least partially located in the reinforcing structure, ensuring support reliability while effectively reducing the vertical space occupied by the support member. This allows the energy storage container to accommodate a greater number of battery packs vertically, thereby increasing the energy density of the energy storage system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the energy storage system provided in a specific embodiment of this utility model;

[0021] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the support component of the energy storage container provided in a specific embodiment of this utility model;

[0023] Figure 4 yes Figure 3 Sectional view at point BB;

[0024] Figure 5 This is a schematic diagram of the processing of the support components of the energy storage container provided in a specific embodiment of this utility model;

[0025] Figure 6 This is a partial view of the energy storage system provided in a specific embodiment of this utility model.

[0026] In the picture:

[0027] 110. Energy storage container; 111. Load-bearing space; 120. Battery pack; 121. Support plate; 122. Battery cell; 123. End plate; 124. Cable tie;

[0028] 200. Column;

[0029] 300. Support component; 310. Support part; 320. Reinforcing structure; 321. Adapter part; 322. Fixing part; 330. Groove; 340. Notch;

[0030] 410. Bottom plate; 420. Top plate. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0033] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] 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.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1-6 As shown, this embodiment provides an energy storage container 110, which includes a column 200 and a support member 300. The column 200 extends vertically, and the support member 300 is provided with a support portion 310, which is arranged horizontally to support the battery pack 120. The support member 300 is also provided with a reinforcing structure 320, and a groove 330 is at least partially provided in the reinforcing structure 320, and the reinforcing structure 320 is at least partially arranged at an angle with the support portion 310. The support member 300 is also provided with a groove 330, and the column 200 can be at least partially placed in the groove 330, and the groove 330 is fixedly connected to the column 200.

[0037] The energy storage container 110 can be used to carry the battery pack 120. The energy storage container 110 is equipped with a vertically extending column 200, and a support member 300 is also provided on the column 200. The support member 300 is equipped with a horizontally extending support portion 310, which is used to support the battery pack 120. Specifically, the support member 300 is equipped with a reinforcing structure 320, which is set at an angle to the support portion 310. This increases the maximum load-bearing capacity of the support member 300, effectively reducing the possibility of deformation of the support member 300 supporting the battery pack 120, and improving the reliability of the energy storage container 110 in supporting the battery pack 120. Furthermore, the support member 300 is also provided with a groove 330, which is at least partially disposed within the reinforcing structure 320. When connecting the column 200 and the support member 300, the column 200 can be at least partially located within the groove 330, and the connection between the support member 300 and the column 200 is achieved through the groove 330. Compared to a support structure with an L-shaped cross-section, the groove 330 effectively reduces the vertical space occupied by the support member 300, thereby improving the vertical space utilization rate of the energy storage container 110.

[0038] Specifically, the groove 330 is welded to the column 200, resulting in a stronger and more reliable connection.

[0039] It is worth noting that, to support the battery pack 120, the support member 300 extends along a first horizontal direction. Multiple columns 200 are provided and spaced apart along a second horizontal direction. Two opposing support portions 310 on adjacent columns 200 along the second horizontal direction are positioned opposite each other to support one battery pack 120. Specifically, the two support portions 310 support the battery pack 120 at both ends along the second horizontal direction. Both the second and first horizontal directions extend horizontally and are perpendicular to each other. The battery pack 120 is formed by connecting individual battery cells 122 with comparable internal resistance in series or parallel. This battery pack 120 can be used in energy storage systems, undertaking functions such as energy storage, release, and optimization of power system operation.

[0040] It is worth noting that a bearing space 111 is formed between two adjacent columns 200 along the second horizontal direction. When bearing spaces 111 are provided at both ends of the column 200 along the second horizontal direction, a support member 300 is provided at both ends of the column 200 along the second horizontal direction, and the support portions 310 of the support members 300 at both ends of the column 200 along the second horizontal direction are arranged far apart from each other.

[0041] For example, the support members 300 on both sides of the column 200 along the second horizontal direction are staggered in the vertical direction, that is, the battery packs 120 in two adjacent bearing spaces 111 are supported at different heights. At this time, the width of the column 200 along the second horizontal direction is not less than the depth of the groove 330. As long as the end of the support member 300 away from the support part 310 does not protrude into the other bearing space 111, it can be avoided that the assembly of the battery pack 120 in the bearing space 111 is not interfered with, and the width of the column 200 along the second horizontal direction is effectively reduced, thereby improving the space utilization rate of the energy storage container 110 in the second horizontal direction and thus improving the energy density of the energy storage system equipped with the energy storage container 110.

[0042] In this embodiment, the support members 300 on both sides of the column 200 along the second horizontal direction are horizontally corresponding, meaning that the battery packs 120 in two adjacent bearing spaces 111 are supported at the same height. At this time, the width of the column 200 along the second horizontal direction is not less than twice the depth of the groove 330, so that the installation of the two support members 300 on the column 200 along the second horizontal direction will not interfere with each other. Simultaneously, a larger width of the column 200 helps to improve its structural strength.

[0043] It is understandable that, such as Figure 1 As shown, the energy storage container 110 has six load-bearing spaces 111 along the second horizontal direction. The columns 200 located at both ends of the second horizontal direction have support members 300 on only one side, while the other columns 200 have support members 300 on both sides. The width of the column 200 with support members 300 only once can be set with reference to a depth not less than that of the groove 330.

[0044] Furthermore, to improve the reliability of the connection between the support member 300 and the column 200, two or more columns 200 are provided along the first horizontal direction, that is, each bearing space 111 includes multiple columns 200 spaced apart along the first horizontal direction at both ends along the second horizontal direction. Correspondingly, the support member 300 is provided with at least two grooves 330, and one column 200 is connected to one groove 330. By having multiple columns 200 connected to the support member 300 along the first horizontal direction, the support strength at various points along its extension direction is improved.

[0045] Specifically, the distance between two adjacent columns 200 along the first horizontal direction is L2, and the thickness of the support member 300 is B, where 134 ≤ L2 / B ≤ 135. When the distance between two adjacent columns 200 along the first horizontal direction is too large, the strength is low, and the support member 300 needs to be set to a larger thickness to reliably support the battery pack 120. When the thickness of the support member 300 is too small, the structural strength can be strengthened by reducing the distance between two adjacent columns 200 along the first horizontal direction. This is because the distance between two adjacent columns 200 along the first horizontal direction and the thickness of the support member 300 are inversely proportional. Furthermore, the ratio should not be set too large or too small; if it is too large, the effect of increasing structural strength is poor, and if it is too small, it occupies too much space and is more expensive. It is understood that the distance L2 between two adjacent columns 200 along the first horizontal direction is the same as the distance between adjacent grooves 330 of the support member 300.

[0046] Furthermore, the energy storage container 110 is also equipped with a base plate 410, and multiple columns 200 are provided. The multiple columns 200 are arranged in a matrix along the horizontal direction to form the aforementioned load-bearing space 111, while improving the reliability of the connection of the support members 300. All the multiple columns 200 are connected to the base plate 410. Furthermore, the energy storage container 110 is also equipped with a top plate 420, and the multiple columns 200 are also connected to the top plate 420.

[0047] In this embodiment, two or more support members 300 are provided along the vertical direction to support multiple battery packs 120 along the vertical direction. Optionally, the support portions 310 of two adjacent support members 300 along the vertical direction can abut against the upper and lower surfaces of the battery packs 120, respectively. That is, the support portions 310 not only support the battery packs 120, but also cooperate with the support portions 310 of adjacent support members 300 to limit the height of the battery packs 120, which can effectively prevent the battery packs 120 from displacing vertically upwards during vibration, and further improve the reliability of supporting and positioning the battery packs 120.

[0048] In other embodiments, such as Figure 6As shown, the interval between the support portions 310 of adjacent support members 300 in the vertical direction is H1, and the height of the battery pack 120 is H. The difference between H1 and H is not less than 4mm. That is, a gap is provided between the support portion 310 of the upper support member 300 and the upper surface of the battery pack 120 to facilitate the installation of the battery pack 120. At the same time, this gap should not be too small to facilitate the installation of the battery pack 120 and also to facilitate the heat dissipation of the battery pack 120; in addition, this gap should not be too large so that the support portion 310 can play a certain limiting role in the large vertical vibration of the battery pack 120, and can also reduce the waste of vertical space and improve the vertical space utilization rate of the energy storage container 110.

[0049] As an optional solution for the energy storage container 110, the reinforcing structure 320 is provided with a transition part 321, which is set at an angle to the support part 310. It can be understood that the groove 330 is provided in the transition part 321. When the support member 300 is connected to the column 200, the projection of the transition part 321 along the first horizontal direction is at least partially located on the column 200. This part will not occupy the vertical space of the bearing space 111, and thus will not affect the setting of the battery pack 120 in the bearing space 111. While realizing the connection between the support member 300 and the column 200, it not only strengthens the structure of the support frame, but also saves space along the vertical direction.

[0050] Specifically, a transition angle α is formed between the adapter 321 and the support 310, where 90° ≤ α ≤ 95°. Setting the angle too large would waste vertical space; setting it too small would result in insufficient increase in the strength of the support member 300. For example, the transition angle between the adapter 321 and the support 310 may be set to 90°, 91°, 92°, 93°, 94°, 95°, etc., without specific limitation. It is worth noting that the adapter 321 can be bent upwards or downwards relative to the support 310.

[0051] Furthermore, the reinforcing structure 320 is also provided with a fixing part 322, which is located at the end of the transition part 321 away from the support part 310. That is, the reinforcing structure 320 has two bends relative to the support part 310, which further enhances the effect of increasing the structural strength.

[0052] Optionally, the fixing part 322 is disposed above the support part 310. When the battery pack 120 is placed on the support part 310, the fixing part 322 will not occupy the space below the battery pack 120, which can further save space in the vertical direction and improve the longitudinal space utilization. Preferably, the fixing part 322 is arranged parallel to the support part 310. In this case, the cross-section of the support member 300 is arranged in a Z-shape.

[0053] It is worth noting that the groove 330 passes through the fixing part 322 towards the adapter part 321 and extends at least partially to the adapter part 321. This can increase the mating length between the groove 330 and the column 200, improve the reliability of their connection, and effectively reduce the amount of the support member 300 placed in the bearing space 111 except for the support part 310. This is beneficial to improving the space utilization rate of the bearing space 111 along the second horizontal direction.

[0054] Meanwhile, the groove 330 does not extend into the support portion 310. This ensures that the support portion 310 has sufficient support area and sufficient support strength.

[0055] For example, the support member 300 is formed by sheet metal stamping and bending, firstly by stamping a long strip of sheet metal to form a support member such as... Figure 5 The notch 340 shown is then bent along the dotted line twice to form a support portion 310, a transition portion 321, and a fixing portion 322 arranged at an angle. The notch 340 after bending forms the groove 330 mentioned above.

[0056] In this embodiment, the distance between the groove 330 and the end of the support member 300 is L1, where L1 ≤ 30mm. If this distance is too large, the structural strength at both ends of the support member 300 will decrease. Therefore, to ensure the structural strength at both ends of the support member 300, L1 is set to 30mm, 25mm, 20mm, 15mm, 10mm, 5mm, etc., without specific limitations. Of course, the spacing between the groove 330 and the end of the support member 300 must ensure the feasibility of machining the groove 330 and provide sufficient welding space.

[0057] As an optional solution for the energy storage container 110, the width of the support part 310 is W1, and the width of the support member 300 is W, where 0.4 ≤ W1 / W ≤ 0.95. It is understandable that the extension distance of the support part 310 along the second horizontal direction affects the contact area between the support part 310 and the battery pack 120. The smaller the distance, the more concentrated the force on the support member 300; the larger the distance, the more reliable the support for the battery pack 120, but the greater the weight and cost, and the less favorable it is for heat dissipation of the battery pack 120. Simultaneously, the width W1 of the support part 310 also affects the width of the reinforcing structure 320. The larger the width of the support part 310, the smaller the width of the reinforcing structure 320. In this case, the proportion of the width of the support part 310 to the width of the support member 300 is larger, resulting in a smaller connection distance between the support part 310 and the column 200, thus lowering the strength of the support member 300. Conversely, the smaller the proportion, the smaller the contact area between the support part 310 and the battery pack 120, leading to poorer support performance. For example, W1 / W can be set to 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, etc., without any specific limitation.

[0058] This embodiment also discloses an energy storage system, including multiple battery packs 120 and an energy storage container 110 as described in any of the above embodiments. The battery packs 120 can be placed on a support portion 310. The energy storage system is equipped with the aforementioned energy storage container 110, and the battery packs 120 are mounted on the support portion 310 of the support member 300, resulting in more stable and reliable support. Simultaneously, the support member 300 is connected to the column 200 via a groove 330 at least partially provided in the reinforcing structure 320. While ensuring the reliability of the support, it can also effectively reduce the space occupied by the support member 300 in the vertical direction, thereby allowing a larger number of battery packs 120 to be arranged in the energy storage container 110 in the vertical direction, thus improving the energy density of the energy storage system.

[0059] Furthermore, the battery pack 120 includes a support plate 121 and a plurality of battery cells 122 placed on the support plate 121. The support plate 121 is at least partially placed on the support portion 310. By setting the support plate 121, multiple battery cells 122 are integrated, reducing the compression of the battery cells 122 by the support portion 310, reducing the local stress on a single battery cell 122, and effectively improving the safety of the battery cells 122 and even the entire battery pack 120.

[0060] For example, a plurality of battery cells 122 are spaced apart along a second horizontal direction, and end plates 123 are provided at both ends of the plurality of battery cells 122 along the second horizontal direction. The end plates 123 are also provided on the support plate 121, and the end plates 123 are at least partially located on the support portion 310, further reducing the force on the battery cells 122.

[0061] Optionally, multiple battery cells 122, end plates 123, and support plates 121 are bundled together with cable ties 124. The support plate 121 is designed as a cold plate, which helps to increase the heat dissipation of the battery pack 120 and improve the thermal management performance of the energy storage system.

[0062] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An energy storage container, characterized in that, include: The column (200) extends vertically and the support member (300) is provided with a support part (310) which is arranged horizontally to support the battery pack (120). The support member (300) is further provided with a reinforcing structure (320), which is at least partially arranged at an angle to the support portion (310); The support member (300) is also provided with a groove (330), the groove (330) is at least partially provided in the reinforcing structure (320), and the column (200) can be at least partially placed in the groove (330), the groove (330) and the column (200) are fixedly connected.

2. The energy storage container according to claim 1, characterized in that, The reinforcing structure (320) is provided with a transition part (321), which is set at an angle to the support part (310).

3. The energy storage container according to claim 2, characterized in that, A transition angle α is formed between the adapter (321) and the support (310), where 90°≤a≤95°.

4. The energy storage container according to claim 2, characterized in that, The reinforcing structure (320) is also provided with a fixing part (322), which is located at one end of the adapter (321) away from the support part (310) and is located above the support part (310).

5. The energy storage container according to claim 4, characterized in that, The groove (330) passes through the fixing part (322) toward the adapter part (321) and extends at least partially to the adapter part (321), and the groove (330) does not extend to the support part (310).

6. The energy storage container according to claim 1, characterized in that, The width of the support part (310) is W1, and the width of the support member (300) is W, 0.4≤W1 / W≤0.

95.

7. The energy storage container according to claim 1, characterized in that, The distance between the groove (330) and the end of the support (300) is L1, where L1 ≤ 30 mm.

8. The energy storage container according to claim 1, characterized in that, There are two or more support members (300) arranged in the vertical direction, and the support portions (310) of two adjacent support members (300) in the vertical direction can respectively abut against the upper and lower surfaces of the battery pack (120).

9. The energy storage container according to claim 1, characterized in that, There are two or more support members (300) arranged in the vertical direction. The interval between the support portions (310) of adjacent support members (300) in the vertical direction is H1. The height of the battery pack (120) is H. The difference between H1 and H is not less than 4mm.

10. The energy storage container according to claim 1, characterized in that, The support member (300) extends along a first horizontal direction, and two or more columns (200) are provided along the first horizontal direction. The support member (300) is provided with at least two grooves (330), and one column (200) is connected to one groove (330).

11. The energy storage container according to claim 10, characterized in that, The distance between two adjacent columns (200) along the first horizontal direction is L2, and the thickness of the support (300) is B, 134≤L2 / B≤135.

12. The energy storage container according to claim 1, characterized in that, The support member (300) extends along a first horizontal direction, and multiple columns (200) are provided and spaced apart along a second horizontal direction. The support portions (310) of the support members (300) on adjacent columns (200) along the second horizontal direction are arranged opposite to each other.

13. The energy storage container according to claim 12, characterized in that, The support members (300) on both sides of the column (200) along the second horizontal direction are staggered in the vertical direction, and the width of the column (200) along the second horizontal direction is not less than the depth of the groove (330).

14. The energy storage container according to claim 12, characterized in that, The column (200) is horizontally corresponding to the support members (300) on both sides along the second horizontal direction, and the width of the column (200) along the second horizontal direction is not less than twice the depth of the groove (330).

15. The energy storage container according to claim 1, characterized in that, The energy storage container is also provided with a base plate (410), and multiple columns (200) are provided. The multiple columns (200) are arranged in a matrix along the horizontal direction and are all connected to the base plate (410).

16. An energy storage system, characterized in that, It includes multiple battery packs (120) and an energy storage container as described in any one of claims 1-15, wherein the battery packs (120) can be placed in the support (310).

17. The energy storage system according to claim 16, characterized in that, The battery pack (120) includes a support plate (121) and a plurality of battery cells (122) placed on the support plate (121), and the support plate (121) is at least partially placed on the support portion (310).

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