Battery cell storage tray, battery cell logistics box and use method of battery cell logistics box

Abstract

The invention discloses a battery cell storage disc, a battery cell logistics box and a using method thereof, the battery cell logistics box is composed of a bottom frame, a plurality of stacked battery cell storage discs and a top cover, each battery cell storage disc comprises a disc body, the disc body is provided with a disc bottom layer, an upper enclosure and a lower enclosure, a battery cell storage groove only containing the lower portion of a battery cell is formed in the upper portion of the disc bottom layer, the central cross section of each battery cell storage disc is in an H shape, and the lower portion of each battery cell storage disc is in an H shape. During stacking, the lower enclosure of the upper-layer tray and the upper enclosure of the lower-layer tray are clamped and matched to define a protection space for protecting the upper half parts of the battery cells, so that comprehensive and effective protection is realized, the upper half parts of the battery cells are exposed after the battery cell storage trays above are moved away, manual and automatic grabbing equipment is adapted, the storage and taking efficiency is improved, recycling can be realized, and the logistics cost is reduced; and the device is suitable for battery cell production turnover, storage and long-distance transportation scenes.

Description

Technical Field

[0001] This invention relates to the field of battery cell storage and logistics transportation technology, specifically to a battery cell storage tray, a battery cell logistics box, and a method of using them. Background Technology

[0002] As the core functional component of battery products, the battery cell has a precise structure and a fragile surface. During production, turnover, warehousing and long-distance transportation, it is necessary to avoid damage such as collision, wear and squeeze, while also taking into account loading and unloading efficiency and reusability.

[0003] In existing technologies, battery cell storage and transportation use foam layers as carrier containers. Multiple battery cells are placed completely within the cell slots of the foam layers, and then multiple layers of foam are stacked on a rack. Protective cardboard is then placed around the multiple layers of foam. This method has low automation, low efficiency, and is difficult to match the turnover rhythm of modern production lines.

[0004] Therefore, there is an urgent need for a battery cell storage and logistics solution that combines comprehensive protection, convenient and efficient stacking and unloading, and compatibility with modern production line processes to address the shortcomings of existing technologies. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a battery cell storage disk.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a battery cell storage tray for storing or transporting battery cells, comprising a tray body, the tray body comprising a bottom tray, an upper surrounding ring surrounding the periphery of the bottom tray, and a lower surrounding ring surrounding the periphery of the bottom tray; the battery cell storage tray further comprises a plurality of battery cell storage slots disposed above the bottom tray to accommodate only the lower part of the battery cells, when the battery cell storage trays are stacked, the lower surrounding ring of the upper battery cell storage tray and the upper surrounding ring of the lower battery cell storage tray are detachably engaged, and two adjacent battery cell storage trays form a protective space for protecting the upper part of the battery cell, and when the upper battery cell storage tray is removed, the exposed upper part of the battery cell is easy to grasp.

[0007] In some embodiments, an upper cavity is formed between the bottom layer of the disk and the upper ring, and a supporting liner is filled at the bottom of the upper cavity, with a plurality of battery cell storage slots formed on the supporting liner.

[0008] In some embodiments, a lower cavity is formed between the bottom layer of the disk and the lower ring. The top of the lower cavity is filled with an anti-jump liner that matches the shape of the lower battery cell and can cover or sleeve the lower battery cell to prevent the battery cell from jumping during transportation, thereby protecting the battery cell's terminals, top patch, or protective film.

[0009] In some embodiments, the anti-jump liner has a cell element avoidance groove at the position of each corresponding cell storage slot directly above it to avoid the terminal post and the top patch.

[0010] In some embodiments, at least one protruding upper positioning post is provided in the upper cavity on the bottom layer of the disc and / or the upper ring, and the upper positioning post is inserted into the groove of the support liner to stabilize the center position of the support liner. Similarly, at least one protruding lower positioning post is provided in the lower cavity on the bottom layer of the disc and / or the lower ring, and the lower positioning post is inserted into the groove of the anti-jump liner to stabilize the center position of the anti-jump liner.

[0011] In some embodiments, at least one extension layer for extending the height of the protective space is also included. The extension layer is detachably fitted to the periphery of the upper ring and / or the lower ring and locked by a plurality of extension locking mechanisms.

[0012] In some embodiments, the disk body is formed by separately manufacturing an upper plastic module including an upper ring and a lower plastic module including a lower ring, placing multiple reinforcing ribs on the lower plastic module, and then heating and melting the mating surfaces of the upper and lower plastic modules to form the bottom layer of the disk.

[0013] Another technical problem to be solved by the present invention is to provide a battery cell logistics box.

[0014] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a battery cell logistics box including the battery cell storage trays in any of the above embodiments, further including a base frame and a top cover, wherein there are multiple battery cell storage trays, which are stacked on the base frame in sequence, and the top cover is placed on the battery cell storage trays located at the top.

[0015] In some embodiments, the base frame includes a base frame bottom layer, a bottom ring surrounding the periphery of the base frame bottom layer, and a plurality of battery cell storage slots disposed above the base frame bottom layer that only accommodate the lower part of the battery cells. When a battery cell storage tray is stacked downwards to the base frame bottom layer, the bottom ring of the battery cell storage tray is detachably engaged with the bottom ring, and the two together form a protective space for protecting the upper part of the battery cell. When the upper battery cell storage tray is removed, the exposed upper part of the battery cell is easy to grasp.

[0016] In some embodiments, the top cover includes a top cover layer and a top ring surrounding the periphery of the top cover layer. When the top cover is placed on the topmost battery cell storage tray, the upper ring of the battery cell storage tray and the top ring are detachably fitted together, and the two form a protective space for protecting the upper part of the battery cell. When the top cover is removed, the exposed upper part of the battery cell is easy to grasp.

[0017] In some embodiments, the bottom ring of the base frame and the top of the upper ring of the tray are provided with a first mating structure, and the bottom of the lower ring of the tray and the top ring of the top cover are provided with a second mating structure. When the battery cell logistics box is stacked, the first mating structure and the second mating structure cooperate with each other.

[0018] Another technical problem to be solved by the present invention is to provide a method for loading battery cell logistics boxes.

[0019] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a loading method for a battery cell logistics box, the loading method comprising the following steps: S11. Placing the base frame at the battery cell loading station, placing the battery cells into the battery cell storage slot at the bottom of the base frame, so that the lower half of each battery cell is contained and limited, and the upper half is naturally exposed; S12. Placing the first battery cell storage tray on the base frame, aligning its lower ring with the bottom ring of the base frame, stacking them vertically downwards, and placing the battery cells into the battery cell storage slot of the battery cell storage tray, wherein the lower ring of the battery cell storage tray and the base frame form a protective space for the upper half of the battery cell; S13. Stacking multiple battery cell storage trays upwards in sequence according to step S12, and placing a battery cell in each battery cell storage tray, with the lower ring of each upper tray corresponding to the upper ring of the lower tray, forming a protective space layer by layer; S14. Stacking the top ring of the top cover on the upper ring of the top battery cell storage tray to complete the overall encapsulation.

[0020] The scope of this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: First, the central cross-section of each battery cell storage tray is H-shaped. The battery cell storage tray holds the lower half of the battery cell through the battery cell storage slot. The protective space formed by the stacking of the upper and lower battery cell storage trays is used to protect the upper half of the battery cell and avoid collision, squeezing and wear during transportation. It provides comprehensive and effective protection. There is no need to put additional cardboard around the battery cell logistics box when it is stacked. Secondly, after removing the upper battery cell storage tray, the upper part of the battery cell is exposed, which is compatible with manual and automated grasping equipment. The layered loading and unloading mode greatly improves the storage and retrieval efficiency, meets the needs of large-scale logistics, and overcomes the shortcomings of low loading and unloading efficiency of existing technologies. Furthermore, the battery cell storage trays and battery cell logistics boxes can be reused during use, reducing logistics costs and enhancing practicality. Attached Figure Description

[0022] Figure 1 A three-dimensional schematic diagram of the battery cell logistics box (Example 1); Figure 2 for Figure 1 A cross-sectional view along the AA direction (battery cells are placed in the cell storage tray). Figure 3 This is a three-dimensional schematic diagram of the battery cell storage tray viewed from above (Example 1). Figure 4 This is a three-dimensional schematic diagram of the battery cell storage tray viewed from below (Example 1). Figure 5 for Figure 3 BB-direction cross-section; Figure 6 3D schematic diagram of the anti-jump lining; Figure 7 A three-dimensional schematic diagram of the supporting lining; Figure 8 This is a front view of the battery cell logistics box (Example 1). Figure 9 This is a front view of the battery cell logistics box (Example 2). Figure 10 A 3D diagram showing the battery cell storage tray after the addition of a raised platform, viewed from above. Figure 11 For the appendix Figure 10 Cross-sectional view along the CC direction; The components are as follows: 11. Panel body; 11a. Bottom layer of the panel; 11b. Upper ring; 11c. Lower ring; 12. Support liner; 13. Anti-jump liner; 14. Upper layer; 15. Heightening locking mechanism; 1a. Cell storage slot; 1b. Cell component clearance slot; 21. Base frame; 21a. Bottom ring; 21b. Bottom layer of base frame; 31. Top cover; 31a. Top cover layer; 31b. Top ring; 4. Protective space; 5. Cell. Detailed Implementation

[0023] Example 1: As shown in the attached document Figure 1-8 As shown, this embodiment discloses a battery cell storage tray, a battery cell logistics box assembled based on the storage tray, and a matching loading method.

[0024] In this embodiment, the battery cell storage tray is made entirely of plastic, such as PP plastic, which is lightweight, tough, and corrosion-resistant. It is suitable for complex workshop environments and frequent transfer needs. It can be used independently or multiple sets can be stacked together with a base frame and top cover, which are also made of plastic, to form a complete battery cell logistics box.

[0025] As attached Figure 2-5As shown, the battery cell storage tray includes a tray body 11, which specifically includes a bottom tray 11a, an upper surrounding ring 11b, and a lower surrounding ring 11c. The upper surrounding ring 11b surrounds the entire outer periphery of the bottom tray 11a, forming an upwardly open upper cavity; the lower surrounding ring 11c surrounds the entire outer periphery of the bottom tray 11a, forming a downwardly open lower cavity. The upper and lower surrounding rings are coaxially arranged to ensure concentricity during stacking.

[0026] As attached Figure 2 As shown, several battery cell storage slots 1a are provided above the bottom layer 11a of the disk. The battery cell storage slots 1a have a groove structure, and their depth can only accommodate the lower half of the battery cell, while the upper half of the battery cell is naturally exposed. This design provides sufficient gripping space for the robotic arm to grasp the battery cell directly without removing any structure to complete the picking and placing. On the other hand, it provides a structural basis for the subsequent stacking to form a protective space.

[0027] As attached Figure 2 As shown, when multiple battery cell storage trays are stacked vertically, the lower ring 11c of the upper battery cell storage tray and the upper ring 11b of the lower battery cell storage tray are detachably engaged. After docking, they form a closed protective space 4 between the two trays. The protective space 4 precisely covers the exposed upper part of the lower battery cell, isolating it from external collisions and friction during transportation and handling, and providing key protection for vulnerable parts such as the battery cell terminals and top contacts. When a battery cell needs to be retrieved, simply remove the upper battery cell storage tray upwards, releasing the protective space 4 and fully exposing the upper part of the battery cell, allowing for direct automated grasping operations. This method is convenient for disassembly and assembly, and highly efficient.

[0028] The bottom layer 11a and the upper ring 11b together form an upper cavity. The bottom of the upper cavity is filled with a supporting liner 12. The supporting liner 12 is made of a cushioning material with a certain degree of flexibility and elasticity, such as EPP foam in this embodiment, or EVA foam, EPO foam, etc. For example, it can be arranged in a 4×12 matrix, with a total of 48 battery cell storage slots 1a. The flexible material can cushion and dampen the lower part of the battery cells, preventing the battery cells from directly colliding with the hard slots and causing scratches and dents, while improving the stability of the battery cells and preventing horizontal shaking.

[0029] The bottom layer 11a and the lower ring 11c together form a lower cavity. The top of the lower cavity is filled with an anti-jump liner 13, which is also made of a flexible elastic material, such as EPP foam. When the disks are stacked, the anti-jump liner 13 covers or fits over the top of the battery cell below. The elasticity of the material forms a slight clamping force, which limits the vertical movement of the battery cell during transportation and avoids component wear and positional displacement caused by the cell's movement.

[0030] The anti-jump liner 13 has a cell component clearance groove 1b, the position of which corresponds one-to-one with the cell storage groove 1a below, and its shape is adapted to the shape of the top terminal post and top patch of the cell. When the anti-jump liner 13 presses against the top of the cell, the clearance groove can completely avoid the precision components, thus achieving anti-jump limiting without squeezing or scratching the terminal post, top patch, and surface protective film, protecting the appearance and performance of the cell in all aspects.

[0031] When the size of the stored battery cells changes, there is no need to re-mold and remake the disc body 11. Only the support liner 12 and the anti-jump liner 13 need to be remade, which reduces production costs. The disc body 11 can be reused.

[0032] To ensure the installation accuracy of the inner liner and prevent displacement during long-term use, multiple protruding upper positioning posts are integrally formed inside the upper cavity at the corners of the bottom layer 11a and the upper ring 11b. Matching slots are provided at corresponding positions on the edge of the supporting inner liner 12. After the upper positioning posts are inserted into the slots, the center positioning and circumferential limiting of the supporting inner liner 12 are achieved, ensuring that the position of the cell storage slot 1a remains accurate and unchanged. Similarly, multiple protruding lower positioning posts are integrally formed inside the lower cavity at the corners of the bottom layer 11a and the lower ring 11c. Corresponding slots are provided on the edge of the anti-jump inner liner 13. The lower positioning posts and slots are inserted and matched to stabilize the installation position of the anti-jump inner liner 13 and ensure that the cell component clearance slot 1b is accurately aligned with the cell.

[0033] In this embodiment, the disc body 11 is manufactured using a process of split molding followed by heating and melting. First, an upper plastic module with an upper ring 11b and a lower plastic module with a lower ring 11c are processed using injection molding and hot pressing. Then, multiple strip-shaped reinforcing ribs are laid on the mating surface of the lower plastic module. These ribs can be made of glass fiber, plastic, or steel wire, etc., to improve the overall bending resistance and load-bearing capacity of the disc body. Finally, the mating surfaces of the upper and lower plastic modules are simultaneously heated to a molten state, pressed together, and cooled to fuse together, forming a complete bottom layer 11a. Compared to one-piece injection molding, this process results in higher structural strength, less deformation, and can meet the load-bearing requirements of multi-layer stacking.

[0034] In this embodiment, the battery cell logistics box, based on the aforementioned battery cell storage trays, is further equipped with a base frame 21 and a top cover 31, forming a complete logistics transfer unit. The battery cell logistics box consists of a base frame 21, multiple battery cell storage trays, and a top cover 31. The number of battery cell storage trays can be set according to warehousing and transportation needs, typically 3-10 layers, stacked sequentially from top to bottom on the base frame 21. The top cover 31 covers the topmost battery cell storage tray. In this embodiment, the base frame 21 and the tray body 11 are 1030-1040mm long and 1030-1040mm wide, with 6 layers of tray bodies 1, which ensures the battery cell storage capacity while controlling the overall height after stacking. For example, after stacking and complete packaging, the height is about 1.4m, which is suitable for subsequent logistics transportation, warehousing, and robotic arm operations.

[0035] The base frame 21 serves as the supporting base for the entire logistics box, including a bottom layer 21b and a bottom ring 21a. The bottom ring 21a surrounds the bottom layer 21b, and its dimensions are the same as the upper ring 11b of the battery cell storage tray. A battery cell storage slot 1a, which only accommodates the lower part of the battery cells, is also provided above the bottom layer 21b, allowing direct storage of battery cells and increasing the storage capacity of the logistics box. When the bottom battery cell storage trays are stacked on the base frame 21, the lower ring 11c of the battery cell storage trays and the bottom ring 21a of the base frame 21 can be detachably engaged, forming a protective space 4 to protect the upper part of the battery cells on the base frame. Removing the upper storage tray allows for quick retrieval.

[0036] Similar to the chassis 11, the bottom layer 21b of the base frame and the bottom ring 21a also form a bottom cavity. The bottom of the bottom cavity is filled with a bottom support liner, which is also made of a cushioning material with a certain degree of flexibility and elasticity. For example, in this embodiment, EPP foam is used, but it can also be EVA foam, EPO foam, etc. The bottom support liner also has 48 battery cell storage slots 1a arranged in a 4×12 matrix. This serves to cushion and absorb shock, improving stability and protection.

[0037] When the size of the stored battery cells changes, there is no need to remake the mold for the base frame 21. Only the bottom support liner needs to be remade, which reduces production costs. The base frame 21 can be reused.

[0038] At least part of the periphery of the bottom layer 21b of the base frame extends downward to form a support frame. In this embodiment, four support frames are formed by extending downward around the base frame. Two forklift lanes are provided on each of the two support frames to accommodate the fork arm size of a conventional forklift, which facilitates the forklift to transport the base frame 21 and the stacked pallets 11 on top as a whole, thereby improving turnover efficiency.

[0039] The top cover 31 includes a top cover 31a and a top ring 31b, with the top ring 31b surrounding the top cover 31a. When the top cover 31 is closed on the topmost battery cell storage tray, the top ring 31b and the upper ring 11b of the storage tray are detachably engaged, forming a protective space 4 between them. This provides sealed protection for the upper part of the top battery cells, achieving full-process protection for all battery cells in the entire logistics box.

[0040] Similar to the disc body 11, the top cover 31a and the top ring 31b together form a top cavity. The top of the top cavity is filled with a top anti-jump liner, which can also refer to the anti-jump liner 13.

[0041] To ensure stacking positioning accuracy and mating stability, the top of the bottom ring 21a of the base frame 21 and the top of the upper ring 11b of the cell storage tray are both provided with a first mating structure; the bottom of the lower ring 11c of the cell storage tray and the bottom of the top ring 31b of the top cover 31 are both provided with a second mating structure. The first and second mating structures can adopt matching forms such as boss and groove, inner ring and outer ring. In this embodiment, the first mating structure is an outer convex ring and the second mating structure is an inner convex ring. When stacking, the outer convex ring is fitted outside the inner convex ring to achieve radial positioning and axial limiting, ensuring neat stacking without deviation and preventing tipping during transportation.

[0042] Based on the loading method of the battery cell logistics box in this embodiment, the standardized implementation of battery cell packing, stacking and packaging is achieved. The operation process is as follows: S11. Place the base frame 21 stably on the automated or manual loading station. Use a robotic arm or manual labor to place the battery cells into the battery cell storage slot 1a through four gripping operations. Only the lower half of each battery cell is embedded in the slot and limited, while the upper half is stably exposed. S12. Take the first battery cell storage tray, align its lower ring 11c with the lower ring 21a of the base frame 21, and place it stably downwards in the vertical direction to achieve a detachable locking fit. At this time, a closed protective space 4 is formed between the storage tray and the base frame, completely wrapping the upper half of the battery cell on the base frame. Then, place the battery cells in the same way. S13. Place the remaining battery cell storage trays into the battery cell storage slot 1a of the battery cell storage tray, ensuring that the lower half of the battery cell is embedded and the upper half is exposed; S14. Following the operation logic of step S12, stack the remaining battery cell storage trays upwards in sequence. Each layer of storage trays is placed to complete the filling of one layer of battery cells. The lower ring 11c of the upper storage tray is precisely aligned with the upper ring 11b of the lower storage tray to form a protective space 4 layer by layer until the preset number of stacking layers is reached; S15. After all battery cell storage trays and battery cells are filled, remove the top cover 31, align the top ring 31b with the upper ring 11b of the uppermost battery cell storage tray, and close it downwards to complete the fit, realizing the top sealing of the entire battery cell logistics box. The box is now complete and can directly enter the transfer and storage process.

[0043] Example 2: Figure 9-11As shown, this embodiment is completely identical to the first embodiment in terms of core structure, materials, manufacturing process, and loading method. The only difference is that the cell storage tray has an additional detachable layer structure, which further improves the product's versatility and adapts to the needs of transferring cells of different heights.

[0044] In this embodiment, the battery cell storage tray is also equipped with a reinforced layer 14. The reinforced layer 14 is an annular frame structure. Its inner diameter and outer diameter are precisely matched with the dimensions of the upper ring 11b and the lower ring 11c. Its top end has the same first mating structure as the top end of the upper ring 11b of the battery cell storage tray, and its bottom end has the same second mating structure as the bottom end of the lower ring 11c of the battery cell storage tray, so as to ensure the coaxiality and sealing after assembly.

[0045] like Figure 11 As shown, the height-increasing layer 14 is detachably installed on the top of the upper ring 11b. After installation, it is locked and fixed by multiple height-increasing locking mechanisms 15. The height-increasing locking mechanism 15 can be in the form of elastic hooks, quick-release bolts, pins, etc., which are convenient for assembly and disassembly and meet the production needs of rapid specification switching.

[0046] The core function of the reinforcement layer 14 is to expand the height of the protective space 4. For cells with larger height dimensions, one or more reinforcement layers 14 can be added between the upper ring 11b and the lower ring 11c before stacking the cells. By stacking the number of reinforcement layers, the interlayer spacing can be flexibly increased, so that the height of the protective space 4 can be fully adapted to the height of the exposed part of the cell. This ensures that the upper part of the cell is completely protected, while avoiding damage caused by excessive compression of the top of the cell by the anti-jump liner 13.

[0047] When transferring standard height battery cells, the extension layer 14 can be directly removed to restore the interlayer height of the battery cell storage tray in Example 1. The battery cell logistics box is compatible with battery cells of various height specifications, reducing the types of turnover equipment on the production site, lowering costs, and improving equipment versatility.

[0048] Apart from the aforementioned heightened structure and adaptation effects, the inner lining structure of the battery cell storage tray, the tray manufacturing process, and the base frame, top cover, mating structure, and overall loading process of the battery cell logistics box in this embodiment are exactly the same as in Embodiment 1, and will not be repeated here.

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A battery cell storage tray for storing or transporting battery cells, comprising a tray body (11), characterized in that: The disk body (11) includes a bottom disk (11a), an upper ring (11b) surrounding the bottom disk (11a) upwards, and a lower ring (11c) surrounding the bottom disk (11a) downwards. The battery cell storage disk also includes multiple battery cell storage slots (1a) located above the bottom disk (11a) that only accommodate the lower part of the battery cells. When the battery cell storage disks are stacked, the lower ring (11c) of the upper battery cell storage disk and the upper ring (11b) of the lower battery cell storage disk can be detachably engaged. The two adjacent battery cell storage disks form a protective space (4) to protect the upper part of the battery cell. When the upper battery cell storage disk is removed, the exposed upper part of the battery cell is easy to grab.

2. The battery cell storage tray according to claim 1, characterized in that: An upper cavity is formed between the bottom layer (11a) of the disk and the upper ring (11b), and a support liner (12) is filled at the bottom of the upper cavity. A plurality of battery cell storage slots (1a) are opened on the support liner (12).

3. The battery cell storage tray according to claim 2, characterized in that: A lower cavity is formed between the bottom layer (11a) of the disk and the lower ring (11c). The top of the lower cavity is filled with an anti-jump liner (13) that matches the shape of the lower cell and can cover or sleeve the lower cell to prevent the cell from jumping during transportation, thereby protecting the cell's terminals, top patch or protective film.

4. The battery cell storage tray according to claim 3, characterized in that: The upper cavity has at least one protruding upper positioning post on the bottom layer of the disc (11a) and / or the upper ring (11b). The upper positioning post is inserted into the slot of the support liner (12) to stabilize the center position of the support liner (12). Similarly, the lower cavity has at least one protruding lower positioning post on the bottom layer of the disc (11a) and / or the lower ring (11c). The lower positioning post is inserted into the slot of the anti-jump liner (13) to stabilize the center position of the anti-jump liner (13).

5. The battery cell storage tray according to claim 1, characterized in that: It also includes at least one extension layer (14) for extending the height of the protective space (4), which is detachably fitted to the periphery of the upper ring (11b) and / or the lower ring (11c) and locked by a plurality of extension locking mechanisms (15).

6. The battery cell storage tray according to claim 1, characterized in that: The disc body (11) is formed by separately manufacturing an upper plastic module containing an upper ring (11b) and a lower plastic module containing a lower ring (11c), placing multiple reinforcing ribs on the lower plastic module, and then heating and melting the mating surfaces of the upper plastic module and the lower plastic module to form the bottom layer (11a) of the disc.

7. A battery cell logistics box comprising a battery cell storage tray according to any one of claims 1-6, characterized in that: It also includes a base frame (21) and a top cover (31). There are multiple battery cell storage trays, which are stacked on the base frame (21) in sequence. The top cover (31) covers the battery cell storage tray located at the top.

8. The battery cell logistics box according to claim 7, characterized in that: The base frame (21) includes a base frame bottom layer (21b), a bottom ring (21a) surrounding the base frame bottom layer (21b) upwards, and a plurality of battery cell storage slots (1a) located above the base frame bottom layer (21b) that only accommodate the lower part of the battery cell. When a battery cell storage tray is stacked downwards to the base frame bottom layer (21b), the bottom ring (11c) of the battery cell storage tray is detachably engaged with the bottom ring (21a), and the two enclose each other to form a protective space (4) for protecting the upper part of the battery cell. When the upper battery cell storage tray is removed, the exposed upper part of the battery cell is easy to grasp.

9. The battery cell logistics box according to claim 7, characterized in that: The top cover (31) includes a top cover (31a) and a top ring (31b) surrounding the top cover (31a) downwards. When the top cover (31) is placed on the topmost battery cell storage tray, the upper ring (11b) of the battery cell storage tray and the top ring (31b) are detachably connected, and the two form a protective space (4) for protecting the upper part of the battery cell. When the top cover (31) is removed, the exposed upper part of the battery cell is easy to grab.

10. The battery cell logistics box according to claim 9, characterized in that: The bottom ring (21a) of the base frame (21) and the top of the upper ring (11b) of the disk body (11) are provided with a first mating structure, and the bottom of the lower ring (11c) of the disk body (11) and the bottom of the top ring (31b) of the top cover (31) are provided with a second mating structure. When the battery cell logistics box is stacked, the first mating structure and the second mating structure cooperate with each other.

11. A method for loading battery cell logistics boxes, characterized in that: The loading method includes the following steps: S11. Place the base frame (21) at the battery cell loading station, and put the battery cells into the battery cell storage slot (1a) of the bottom layer (21a) of the base frame, so that the lower half of each battery cell is contained and limited, and the upper half is naturally exposed. S12. Place the first battery cell storage tray on the base frame (21), align its lower ring (11c) with the lower ring (21a) of the base frame (21), stack them vertically downwards, and put the battery cells into the battery cell storage slot (1a) of the battery cell storage tray. The lower ring (11c) of the battery cell storage tray and the base frame (21) form a protective space (4) for the upper half of the battery cell. S13. Following the method of step S12, multiple battery cell storage trays are stacked upwards in sequence, and a battery cell is placed in each battery cell storage tray. The lower ring (11c) of each upper tray is stacked with the upper ring (11b) of the lower tray, forming a protective space (4) layer by layer. S14. Stack the top ring (31b) of the top cover (31) on the top ring (11b) of the top cell storage tray to complete the overall encapsulation.

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