Compact battery energy storage container

Abstract

The utility model discloses a compact battery energy storage container which comprises a frame which is stacked up and down, battery cells arranged in the frame and a liquid cooling plate arranged at the bottom of the frame, and a plurality of rows of notches are formed in the liquid cooling plate; the frame comprises a frame body, supporting strips corresponding to the notches one to one and end plates arranged at the two ends of the supporting strips. And the supporting strips are accommodated in the notches. According to the utility model, the liquid cooling plate is designed to be of a comb-shaped structure, and gaps among the liquid cooling plate are filled with the supporting strips, so that a complete and flat plate-shaped structure is constructed, and firm supporting and heat dissipation functions are provided for the battery cells. The space is efficiently utilized in the vertical direction, and the needed height space is reduced. And on the horizontal layout, the end plates, the supporting strips and the liquid cooling plate are tightly connected into a compact whole through the penetrating type fasteners, so that the width space is effectively saved, the space proportion of the battery cells in the system is greatly improved, and the overall electric energy storage capacity of the container system is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field especially a compact battery energy storage container. BACKGROUND

[0002] At present, the shape of the battery cell in the energy storage application market is mostly square, and the assembly process of the overall energy storage system is: the battery cell is first stacked into a module, the module pole piece is welded, and then integrated into the box body, and the box body is stacked to form a battery. This design scheme has two obvious shortcomings: first, the four-section assembly design is complex from design to process assembly; second, the traditional energy storage container has a plurality of stacked battery systems in the middle, and 4-7 columns and guide rail structures are used for installing the pack, which occupies the width and height space of the container, resulting in low space utilization of the battery cell and low total power of the system. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a battery energy storage container, which improves the space utilization ratio of the battery cell and improves the total power of the system through structural improvement.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model discloses a compact battery energy storage container, which comprises upper and lower stacked frames, battery cells arranged in the frame, and a liquid cooling plate arranged at the bottom of the frame, wherein a plurality of grooves are formed in the liquid cooling plate; the frame comprises a frame body, a support bar corresponding to each groove, and end plates arranged at both ends of the support bar; wherein the support bar is accommodated in the groove.

[0006] Further scheme: the end plate, the support bar and the liquid cooling plate are connected through penetrating fasteners.

[0007] Further scheme: the liquid cooling plate is divided into a plurality of tooth parts by the grooves, and the length of the tooth parts on both sides is longer than the length of the frame.

[0008] Further scheme: the support bar comprises a plurality of main support bars and auxiliary support bars arranged on both sides of the plurality of support bars, and the width of the main support bar is wider than that of the auxiliary support bar.

[0009] Further scheme: the frame further comprises a cover body covering the frame body.

[0010] Further scheme: the end plate is provided with an avoiding opening for avoiding the pole piece.

[0011] Further scheme: a heat insulation layer is arranged between the end plate and the battery cell.

[0012] Further scheme: the heat insulation layer is aerogel.

[0013] Further scheme: further includes a box for accommodating the multi-layer frame, the box includes an upper box plate, a lower box plate, a column connecting the upper box plate and the lower box plate.

[0014] Further scheme: the box includes an electric core area and an electrical appliance area, the frame is arranged in the electric core area, and the electrical appliance area is provided with electrical appliances.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The liquid cooling plate is designed in a comb structure, and the gaps between the liquid cooling plate and the support strips are filled, so that a complete and flat plate structure is constructed, and firm support and heat dissipation functions are provided for the electric core. The design not only ensures the stability of the mounting structure, but also realizes efficient use of space in the vertical direction and reduces the required height space. In the horizontal layout, the end plate, the support strip and the liquid cooling plate are closely connected by the use of the through fastener to form a compact whole, thereby effectively saving the width space. In summary, the design of the utility model greatly improves the space ratio of the electric core in the system, thereby significantly enhancing the overall electric energy storage capacity of the container system. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an exploded view of the frame and the liquid cooling plate in the utility model;

[0018] Figure 2 It is a schematic view of the frame body and the liquid cooling plate in the utility model;

[0019] Figure 3 It is a schematic view of the liquid cooling plate structure in the utility model;

[0020] Figure 4 It is a schematic view of the support strip arrangement in the utility model;

[0021] Figure 5 It is a schematic view of the structure in the utility model;

[0022] Figure 6 It is a schematic view of the end plate structure in the utility model;

[0023] In the figure: 1-frame, 11-frame body, 111-support strip, 1111-main support strip, 1112-secondary support strip, 112-end plate, 1121-avoidance opening, 12-cover, 2-electric core, 3-liquid cooling plate, 31-groove, 32-tooth part, 4-box, 41-upper box plate, 42-lower box plate, 43-column, 5-electrical appliance. DETAILED DESCRIPTION

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Please see Figures 1-5 In this embodiment, a compact battery energy storage container includes upper and lower stacked frames 1, battery cells 2 disposed in the frames 1, and a liquid cooling plate 3 disposed at the bottom of the frames 1. The liquid cooling plate 3 has several rows of slots 31; the frames 1 include a frame body 11, support bars 111 corresponding one-to-one with the slots 31, and end plates 112 disposed at both ends of the support bars 111; wherein, the support bars 111 are accommodated in the slots 31, the two are fitted together, and the height is the same, eliminating the original bottom plate and effectively saving the height space of the container.

[0027] Furthermore, the end plates 112, support bars 111, and liquid cooling plates 3 are connected by through fasteners. These fasteners extend longitudinally through the height of all the upper and lower end plates 112, connecting the multi-layered frame 1 into a single unit, improving overall structural stability and effectively saving space in the container's width. Preferably, the fastener is a rod with a flat nut at the lower end and threads at the upper end, and is secured by bolts.

[0028] Furthermore, the end plate 112 has an L-shaped structure, with its horizontal section serving as a through section for fasteners, enhancing the stability of the connection between the end plate 112 and the support strip 111. The end plate 112 has a hollow design to reduce weight and resist cell expansion.

[0029] Furthermore, the liquid cooling plate 3 is divided into several toothed sections 32 by the slot 31, with the toothed sections 32 on both sides being longer than the length of the frame 1. The liquid cooling plate 3 is a stamped structure with two layers. The upper layer is coated with thermally conductive adhesive for bonding and supporting the battery cells, while the lower layer has flow channels and inlets and outlets for the coolant to enter and exit. The inlets and outlets are located on the toothed sections 32 on both sides. The toothed sections 32 on both sides are intentionally designed to be longer than the central toothed section 32, providing ample space for the rational arrangement of the inlets and outlets.

[0030] Designing the length of the two side teeth 32 to be longer than that of the middle teeth 32 is beneficial for the arrangement of the water outlet and the water inlet.

[0031] Furthermore, the support strip 111 includes several main support strips 1111 and auxiliary support strips 1112 located on both sides of the support strips 1111. There are three main support strips 1111, which are used to support the middle position of the bottom of the protruding cell and the bottom of the two adjacent rows of cells. There are two auxiliary support strips 1112, which are used to support the cells at both ends of the single-layer battery. The width of the main support strips 1111 is wider than the width of the auxiliary support strips 1112. The main support strips 1111 are supported in the middle area of ​​the cell assembly and are wider, thus bearing the main strength support role. The auxiliary support strips 1112 are located on both sides of the cell assembly and are narrower, which reduces the overall weight of the structure and also provides auxiliary support.

[0032] The support bars have weight-reducing holes, and a layer of PC spacer or other insulating material is added to the upper surface of the battery cell to prevent damage to the blue film of the battery cell from full charge and to prevent the battery cell from being squeezed. It should be noted that, in other embodiments, the number of main support bars 1111 and auxiliary support bars 1112 can be arranged according to actual needs.

[0033] Furthermore, the frame 1 also includes a cover 12 that covers the frame body 11, and the cover 12 is fixed to the end plate 112 by fastening bolts.

[0034] Furthermore, the end plate 112 is provided with a clearance opening 1121 for avoiding the electrode sheet, so as to prevent the electrode sheet of the battery cell from being squeezed.

[0035] Furthermore, a heat insulation layer is provided between the end plate 112 and the battery cell 2. This heat insulation layer is aerogel, used for heat insulation and absorbing the expansion of the battery cell.

[0036] Furthermore, the present invention also includes a box 4 for accommodating the multi-layer frame 1, the box 4 including an upper box plate 41, a lower box plate 42, and a column 43 connecting the upper box plate 41 and the lower box plate 42.

[0037] Furthermore, the enclosure 4 includes a cell area and an electrical component area. The frame is located within the cell area, and the electrical component area houses the electrical devices 5. The cell is the core component of the battery energy storage system, responsible for storing electrical energy. Placing the cells in separate zones reduces the risk of fire or explosion due to cell failure or thermal runaway. This zoned layout helps limit the spread of fire, making the system safer and more reliable. Each frame 1 contains 36 rows of cells, each row forming one or more battery packs, which are then connected in series to form the entire energy storage system.

[0038] In the assembly of this utility model, firstly, one end plate 112 is assembled and fixed with the liquid cooling plate 3. Then, the support strip is placed in the gap of the liquid cooling plate 3, and both ends of the support strip are fixed to the end plate 112. Then, the battery cells are stacked. Taking the battery cells stacked on one side as a reference, they are stacked row by row towards the other end plate. Aerogel insulation is added between adjacent rows of battery cells. Then, another end plate 112 is taken and fixed with the support strip and the liquid cooling plate. The cover 12 is covered on the battery cells and fixed. Thus, the first layer of battery cell unit is assembled. The battery cell unit is then moved to the lower box plate 42. The above steps are repeated until all battery cell units are assembled. They are then placed according to the preset row and column numbers, electrical components are installed, and finally, the column 43 and the upper box cover 41 are assembled.

[0039] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0040] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A compact battery energy storage container, characterized in that, The device includes an upper and lower stacked frame (1), a battery cell (2) disposed in the frame (1), and a liquid cooling plate (3) disposed at the bottom of the frame (1). The liquid cooling plate (3) has several rows of slots (31). The frame (1) includes a frame body (11), a support bar (111) corresponding to the slot (31) of the frame body (11), and end plates (112) disposed at both ends of the support bar (111). The support bar (111) is accommodated in the slot (31).

2. The compact battery energy storage container according to claim 1, characterized in that, The end plate (112), support bar (111), and liquid cooling plate (3) are connected by through fasteners.

3. The compact battery energy storage container according to claim 1, characterized in that, The liquid cooling plate (3) is divided into several teeth (32) by the slot (31), and the teeth (32) on both sides are longer than the length of the frame (1).

4. The compact battery energy storage container according to claim 1, characterized in that, The support bar (111) includes several main support bars (1111) and auxiliary support bars (1112) located on both sides of the several main support bars (1111). The width of the main support bar (1111) is wider than the width of the auxiliary support bar (1112).

5. The compact battery energy storage container according to claim 1, characterized in that, The frame (1) also includes a cover (12) that covers the frame body (11).

6. The compact battery energy storage container according to claim 1, characterized in that, The end plate (112) is provided with a clearance opening (1121) for avoiding the electrode sheet.

7. The compact battery energy storage container according to claim 1, characterized in that, A heat insulation layer is provided between the end plate (112) and the battery cell (2).

8. The compact battery energy storage container according to claim 7, characterized in that, The insulation layer is aerogel.

9. The compact battery energy storage container according to claim 1, characterized in that, It also includes a box (4) for accommodating the multi-layer frame (1), the box (4) including an upper box plate (41), a lower box plate (42), and a column (43) connecting the upper box plate (41) and the lower box plate (42).

10. The compact battery energy storage container according to claim 9, characterized in that, The housing (4) includes a battery cell area and an electrical appliance area. The frame is located in the battery cell area, and the electrical appliance area is equipped with electrical components (5).

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