Battery cell packaging structure

Abstract

The utility model belongs to the packaging box technical field relates to a kind of electric core packaging structure, including bottom tray and the upper tray of being buckled on bottom tray;The accommodating space between bottom tray and upper tray is formed;Accommodating cavity for accommodating electric core is provided in the accommodating space;The accommodating cavity includes electric core main body accommodating cavity and electric core top accommodating cavity;The electric core main body accommodating cavity is located on the top surface of bottom tray;The electric core top accommodating cavity is located on the bottom surface of upper tray;The position of electric core main body accommodating cavity and the position of electric core top accommodating cavity are opposite;Third avoiding slot is also respectively arranged at the four corners of electric core top accommodating cavity.The utility model's structure supportability is high, can avoid electric core packaging structure cracking and breakage, can effectively resist the impact of external force to internal electric core, thereby to electric core play good isolation protection effect.

Description

Technical Field

[0001] This utility model belongs to the field of packaging box technology and relates to a battery cell packaging structure. Background Technology

[0002] As the core component of various electronic devices and energy storage systems, the performance and safety of battery cells are receiving increasing attention. Battery cell packaging is a crucial link in protecting the cells and ensuring their normal operation. During transportation, battery cells typically require packaging boxes to prevent damage. Current technology uses foam inserts with dividers inside the packaging box before the cells are placed inside to prevent severe impacts during transport that could affect their appearance. The foam is generally made of cross-linked polyethylene foam layer, placed on the inner surface of the plastic packaging box. This material has an independent mesh-like closed-cell structure, which can prevent the cells from being scratched during transport and reduces costs. However, this type of packaging box has the following problems: the foam is a soft material with low hardness and poor support. It is easily deformed by external forces during transportation or punctured by the cells when in direct contact, leading to cracking and damage. It cannot effectively resist external impacts on the internal cells and cannot provide adequate isolation and protection. Utility Model Content

[0003] In response to the technical problem described in the background art, the existing battery cell packaging boxes are made of soft material with low hardness and poor support, which makes them prone to deformation or puncture during transportation, resulting in cracks and damage. They cannot effectively resist the impact of external forces on the internal battery cells and cannot provide isolation and protection for the battery cells. This utility model provides a battery cell packaging structure.

[0004] This invention creates a receiving space between a bottom tray and an upper tray; within this space, there is a receiving cavity for accommodating the battery cells; the receiving cavity includes a battery cell body receiving cavity and a battery cell top receiving cavity, with third clearance grooves provided at the four corners of the battery cell top receiving cavity. This tray-type battery cell packaging structure offers high support stability, preventing cracking and damage to the battery cell packaging structure, and effectively resisting external forces impacting the internal battery cells, thus providing excellent isolation and protection for the battery cells.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A battery cell packaging structure includes a bottom tray and an upper tray fastened to the bottom tray; a receiving space is formed between the bottom tray and the upper tray; a receiving cavity for receiving the battery cell is provided within the receiving space;

[0007] The receiving cavity includes a cell body receiving cavity and a cell top receiving cavity; the cell body receiving cavity is located on the top surface of the bottom tray; the cell top receiving cavity is located on the bottom surface of the upper tray; the positions of the cell body receiving cavity and the cell top receiving cavity are opposite to each other; a third clearance groove is also provided at each of the four corners of the cell top receiving cavity.

[0008] Furthermore, the cross-section of the third clearance groove is arc-shaped.

[0009] Further specified, a first clearance groove and a second clearance groove are respectively provided on the upper and lower surfaces of the top receiving cavity of the battery cell; there are two second clearance grooves, which are arranged on both sides of the first clearance groove.

[0010] Further specifying, a fourth clearance groove is provided on the side wall of the cavity at the top of the battery cell along its length.

[0011] Further specified, slots are respectively provided on the bottom and side wall of the cell body receiving cavity; the slots on the bottom of the cell body receiving cavity and the slots on the side wall of the cell body receiving cavity form a cross-shaped structure.

[0012] Furthermore, the cell body receiving cavity is a downward-facing groove structure; the cell top receiving cavity is an upward-facing groove structure.

[0013] Furthermore, handles are provided on the opposite side walls of the upper tray.

[0014] Further, the accommodating cavity can be one or more; when there are multiple accommodating cavities, the multiple accommodating cavities are distributed in an array within the accommodating space.

[0015] Furthermore, the battery cell packaging structure also includes a first card hole on the top surface of the bottom tray and a first card post on the bottom surface of the upper tray; the first card post matches the first card hole and is engaged within the first card hole.

[0016] Further defining the battery cell packaging structure, it also includes a second card hole opened on the top surface of the bottom tray and a second card post disposed on the bottom surface of the upper tray; the second card post matches and is engaged in the second card hole; the second card hole and the first card hole are located on two opposite sides of the bottom tray.

[0017] Compared with the prior art, the technical effects of this utility model are:

[0018] 1. This utility model forms a receiving space between a bottom tray and an upper tray; a receiving cavity for accommodating the battery cell is provided within the receiving space; the receiving cavity includes a battery cell body receiving cavity and a battery cell top receiving cavity; the battery cell body receiving cavity is used to receive and support the bottom and body of the battery cell, and the battery cell top receiving cavity is used to receive and support the top of the battery cell. This battery cell packaging structure has high support, can avoid cracking and damage to the battery cell packaging structure, and can effectively resist the impact of external forces on the internal battery cell, thus playing a good role in isolating and protecting the battery cell. Third clearance grooves are also provided at the four corners of the battery cell top receiving cavity to avoid friction caused by direct contact, which could cause the battery cell packaging structure to break and shed powder (i.e., foam powder), further preventing cracking and damage, ensuring the integrity of the structure, and enhancing support stability.

[0019] 2. In this utility model, slots are respectively provided on the bottom and side walls of the cell body receiving cavity; the slots on the bottom and side walls of the cell body receiving cavity form a cross-shaped structure, which allows the bottom and side walls of the cell to be well secured in the cell body receiving cavity, while also playing a role in avoiding friction caused by direct contact, thus preventing the upper tray from breaking and shedding powder, and improving the support stability.

[0020] 3. In this utility model, a first clearance groove, a second clearance groove, and a fourth clearance groove are respectively provided in the cavity at the top of the battery cell. This not only ensures that the top of the battery cell can be securely fixed in the cavity at the top of the battery cell, improving stability during transportation, but also plays a clearance role, avoiding the friction caused by direct contact that could cause the battery cell packaging structure to break and shed powder, thus improving support stability.

[0021] 4. In this utility model, there are one or more accommodating cavities; when there are multiple accommodating cavities, the multiple accommodating cavities are evenly distributed in an array within the accommodating space, which can accommodate multiple battery cells while ensuring support stability and improving transportation efficiency.

[0022] 5. This utility model prevents wear on the battery packaging structure caused by shaking and increased friction by setting a first locking hole to match a first locking post and a second locking hole to match a second locking post, thereby enhancing the connection stability between the bottom tray and the bottom tray. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the top surface of the bottom tray;

[0024] Figure 2 This is a top view of the top surface of the base tray;

[0025] Figure 3 This is a three-dimensional schematic diagram of the bottom surface of the base tray;

[0026] Figure 4This is a three-dimensional schematic diagram of the bottom surface of the upper tray;

[0027] Figure 5 This is a front view of the bottom surface of the upper tray;

[0028] Figure 6 for Figure 5 Sectional view of AA;

[0029] in:

[0030] 10-Bottom tray; 101-Cell body receiving cavity; 102-Card slot; 103-First card hole; 104-Second card hole; 20-Upper tray; 201-Cell top receiving cavity; 202-First clearance groove; 203-Second clearance groove; 204-Third clearance groove; 205-Fourth clearance groove; 206-Handle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0034] In one embodiment of this utility model, the battery cell packaging structure includes a bottom tray 10 and an upper tray 20 fastened to the bottom tray 10; a receiving space is formed between the bottom tray 10 and the upper tray 20; and a receiving cavity for receiving the battery cell is provided in the receiving space.

[0035] See Figure 1 , Figure 2 and Figure 3The accommodating cavity includes a cell body accommodating cavity 101 and a cell top accommodating cavity 201. The cell body accommodating cavity 101 is located on the top surface of the bottom tray 10. The cell body accommodating cavity 101 has a downward-facing groove structure. In use, the top surface of the bottom tray 10 faces upward, and the bottom surface of the bottom tray 10 is a flat surface.

[0036] See Figure 4 The top cavity 201 of the battery cell is located on the bottom surface of the upper tray 20. The top cavity 201 of the battery cell is an upward-facing groove structure. In use, the bottom surface of the upper tray 20 faces downward, and the top surface of the upper tray 20 is flat. This facilitates the stacking of multiple battery cell packaging structures together and makes transportation easier.

[0037] Preferably, both the bottom tray 10 and the upper tray 20 are foam trays, specifically polystyrene foam REPS with a density of 36 kg / m³. 3 The preferred color is white; the dimensions of the bottom tray 10 are 1040×1040×65mm (length×width×height), and the four corners of the bottom tray 10 are rounded with an radius of R20mm; the dimensions of the upper tray 20 are 1040×1040×50mm (length×width×height), and the four corners of the upper tray 20 are rounded with an radius of R20mm; the upper tray 20 is fastened to the bottom tray 10 to form an integrated tray structure.

[0038] Preferably, the thickness of the bottom wall of the cell body receiving cavity 101 is greater than 10mm, and the thickness of the side wall of the cell body receiving cavity 101 is greater than 20mm. According to this size design, the entire receiving cavity can not only accommodate the cell well, but also the packaging structure has good support.

[0039] In this embodiment, the bottom tray 10 and the cell body receiving cavity 101 thereon, as well as the upper tray 20 and the cell top receiving cavity 201 thereon, are all processed by an integrated molding process, which provides high support strength and stability.

[0040] In this embodiment, the positions of the main body receiving cavity 101 and the top receiving cavity 201 are opposite to each other. When the upper tray 20 is fastened onto the bottom tray 10, the main body receiving cavity 101 and the top receiving cavity 201 form a receiving cavity, in which the battery cell is located. The main body receiving cavity 101 is used to receive the bottom and main body of the battery cell, providing support for the bottom and main body; the top receiving cavity 201 is used to receive the top of the battery cell, providing support for the top. Since the upper tray 20 and the bottom tray 10 are fastened together as an integrated structure, they provide fixed support for the battery cell, preventing the packaging box from cracking and breaking, and improving the protection of the battery cell.

[0041] See Figure 1 and Figure 2In this embodiment, slots 102 are respectively provided on the bottom and side wall of the cell body receiving cavity 101; the slots 102 on the bottom and side wall of the cell body receiving cavity 101 form a cross-shaped structure. In this way, the bottom of the cell can be locked in the slots 102 during transportation, further improving the stability of the cell.

[0042] See Figure 4 , Figure 5 and Figure 6 A first clearance groove 202 and a second clearance groove 203 are respectively provided on the upper and bottom surfaces of the top cavity 201 of the battery cell; there are two second clearance grooves 203, which are arranged on both sides of the first clearance groove 202.

[0043] In practice, the first clearance groove 202 and the second clearance groove 203 extend along the top of the top cavity 201 of the battery cell towards the top surface of the upper tray 20. The first clearance groove 202 and the second clearance groove 203 are designed to match the positive and negative terminals of the battery cell. On the one hand, they provide clearance for the positive and negative terminals of the battery cell, preventing them from directly contacting the top of the top cavity 201 of the battery cell and causing damage. On the other hand, they also act as a locking mechanism, securing the top of the battery cell and preventing it from shaking during transportation.

[0044] According to the conventional lithium battery cell design structure, preferably, the first clearance groove 202 and the second clearance groove 203 are distributed sequentially along the length of the receiving cavity 201 at the top of the cell. The first clearance groove 202 has a quincunx shape; the second clearance groove 203 has a square shape. The structural design of the first clearance groove 202 and the second clearance groove 203 can also be designed according to the structure of the battery cell they accommodate.

[0045] In this embodiment, third clearance grooves 204 are respectively provided at the four corners of the top cavity 201 of the battery cell. The third clearance grooves 204 are arc grooves. And the third clearance grooves 204 are opened along the vertical direction of the top cavity 201 of the battery cell. Therefore, the cross-section of the third clearance grooves 204 is arc-shaped. The third clearance grooves 204 leave gaps between the four ends of the battery cell and the top cavity 201 of the battery cell, avoiding direct and tight contact between the top of the battery cell and the inner wall of the top cavity 201 of the battery cell. This reduces the friction between the battery cell and the battery packaging structure during transportation, and avoids the friction caused by direct and tight contact that could cause the upper tray 20 to break and the packaging structure to be damaged, thereby improving the support force.

[0046] In this embodiment, a fourth clearance groove 205 is formed on the side wall along the length direction of the top cavity 201 of the battery cell. The fourth clearance groove 205 is formed along the vertical direction of the top cavity 201 of the battery cell.

[0047] Preferably, there are two fourth clearance grooves 205, which are provided on opposite sidewalls of the cell top receiving cavity 201 along the length direction.

[0048] When the top cavity 201 of the battery cell is secured to the top of the battery cell, the first clearance groove 202 and the second clearance groove 203 provide clearance for the top of the battery cell. This ensures that the top cavity 201 is securely fitted to the top of the battery cell while preventing the top of the battery cell from puncturing the top cavity 201 and causing damage. The fourth clearance groove 205 facilitates the securing of the battery cell within the top cavity 201 and also provides clearance for the sides of the battery cell. This design creates gaps between the top and sides of the battery cell and the top cavity 201, preventing direct contact between the top and sides of the battery cell. This reduces friction between the battery cell and the battery packaging structure during transportation, minimizing deformation and damage to the packaging structure and improving the support performance of the battery cell.

[0049] In this embodiment, handles 206 are respectively provided on the opposite side walls of the upper tray 20. This facilitates fastening the upper tray 20 onto the bottom tray 10.

[0050] See Figures 1-6 In another embodiment of this utility model, there are one or more receiving cavities. When there are multiple receiving cavities, they are arranged in an array within the receiving space. That is, there are one or more cell body receiving cavities 101 and cell top receiving cavities 201. When there are multiple cell body receiving cavities 101, they are arranged in an array on the top surface of the bottom tray 10; when there are multiple cell top receiving cavities 201, they are arranged in an array on the bottom surface of the upper tray 20. When arranged in an array, the positions of the multiple cell top receiving cavities 201 correspond one-to-one with the positions of the multiple cell body receiving cavities 101.

[0051] According to the above design, the thickness of the sidewall of the cell body receiving cavity 101 is greater than 20mm, and when distributed in such an array, the distance between adjacent receiving cavities is greater than 20mm.

[0052] In practice, the number of cavities can be 6, 8, 16, 30, 40, 50, or 60.

[0053] The following explanation uses a lithium battery cell that can hold 50 rectangular cells as an example.

[0054] It can accommodate 50 rectangular lithium battery cells, with 50 cells arranged in an array of 5 columns and 10 rows.

[0055] See Figure 2The dimensions of the cell body receiving cavity 101 are 174.8mm long × 71.5mm wide, and the depth of the cell body receiving cavity 101 is 50mm. The thickness of the bottom tray 10 is 65mm, so the thickness of the bottom wall of the cell body receiving cavity 101 is 15mm (greater than 10mm). The distance between two adjacent columns of cell body receiving cavities 101 is 31.7mm, and the distance between two adjacent rows of cell body receiving cavities 101 is 29.2mm. That is, the wall thickness of the cell body receiving cavity 101 is greater than 20mm. Each cell body receiving cavity 101 has a high supporting load-bearing capacity and can play a good role in accommodating, isolating and protecting the lithium battery cell.

[0056] The dimensions of the cell top receiving cavity 201 are 178.2 mm long × 75.5 mm wide. The center position of each cell top receiving cavity 201 coincides with the center position of the cell body receiving cavity 101; this allows the cell to be stably secured in each receiving cavity between the center position of the cell top receiving cavity 201 and the cell body receiving cavity 101, providing independent stabilization for each cell and improving protection.

[0057] See Figure 2 In another embodiment of this invention, to make the engagement between the bottom tray 10 and the upper tray 20 more stable, the battery cell packaging structure further includes a first locking hole 103 formed on the top surface of the bottom tray 10 and a first locking post disposed on the bottom surface of the upper tray 20; the first locking post matches and is locked within the first locking hole 103. The battery cell packaging structure further includes a second locking hole 104 formed on the top surface of the bottom tray 10 and a second locking post disposed on the bottom surface of the upper tray 20; the second locking post matches and is locked within the second locking hole 104; the second locking hole 104 and the first locking hole 103 are located on two opposite sides of the bottom tray 10.

[0058] See Figure 2 A first locking hole 103 and a second locking hole 104 are provided on opposite sides of the top surface of the bottom pallet 10, for example, the first locking hole 103 is provided on the left side and the second locking hole 104 is provided on the right side; correspondingly, a first locking post and a second locking post are installed at opposite positions on the bottom surface of the upper pallet 20, with the first locking post locked in the first locking hole 103 and the second locking post locked in the second locking hole 104, so that the bottom pallet 10 and the upper pallet 20 are installed stably, effectively avoiding the increase in friction caused by large shaking during transportation, thereby effectively reducing the damage to the bottom pallet 10 and the upper pallet 20 caused by friction and improving the overall stability.

[0059] Preferably, both the first locking hole 103 and the second locking hole 104 are blind holes. Furthermore, there are two of each type. The two first locking holes 103 are symmetrically distributed on the left side of the base tray 10, and the two second locking holes 104 are symmetrically distributed on the right side of the base tray 10. The number of first locking holes 103 and second locking holes 104 can also be multiple, such as three or four, depending on the size of the base tray 10 and the number of battery cells it carries; details will not be elaborated here.

[0060] Preferably, to further improve the stability of the battery cell packaging assembly, the first locking hole 103 is a cross-shaped hole; the second locking hole 104 is an elongated hole. The first locking post is a cross-shaped locking post that matches the cross-shaped hole; the second locking post is a cylindrical locking post that matches the elongated hole.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery cell packaging structure, characterized in that, It includes a bottom tray (10) and an upper tray (20) that is fastened to the bottom tray (10); a receiving space is formed between the bottom tray (10) and the upper tray (20); a receiving cavity for receiving the battery cell is provided in the receiving space; The receiving cavity includes a cell body receiving cavity (101) and a cell top receiving cavity (201); the cell body receiving cavity (101) is located on the top surface of the bottom tray (10); the cell top receiving cavity (201) is located on the bottom surface of the upper tray (20); the positions of the cell body receiving cavity (101) and the cell top receiving cavity (201) are opposite to each other; a third clearance groove (204) is also provided at each of the four corners of the cell top receiving cavity (201).

2. The cell packaging structure according to claim 1, characterized in that, The cross-section of the third clearance groove (204) is arc-shaped.

3. The cell packaging structure according to claim 2, characterized in that, The top surface of the cell top receiving cavity (201) is provided with a first clearance groove (202) and a second clearance groove (203); there are two second clearance grooves (203) and they are arranged on both sides of the first clearance groove (202).

4. The cell packaging structure according to claim 3, characterized in that, A fourth clearance groove (205) is provided on the side wall of the top receiving cavity (201) of the battery cell along its length.

5. The cell packaging structure according to claim 4, characterized in that, The bottom and side wall of the cell body receiving cavity (101) are respectively provided with slots (102); the slots (102) on the bottom of the cell body receiving cavity (101) and the slots (102) on the side wall of the cell body receiving cavity (101) form a cross-shaped structure.

6. The cell packaging structure according to claim 5, characterized in that, The cell body receiving cavity (101) is a downward-facing groove structure; the cell top receiving cavity (201) is an upward-facing groove structure.

7. The cell packaging structure according to claim 6, characterized in that, Handles (206) are respectively provided on the opposite side walls of the upper tray (20).

8. The cell packaging structure according to any one of claims 1-7, characterized in that, The accommodating cavity may be one or more; when there are multiple accommodating cavities, the multiple accommodating cavities are distributed in an array within the accommodating space.

9. The cell packaging structure according to claim 8, characterized in that, The battery cell packaging structure also includes a first card hole (103) on the top surface of the bottom tray (10) and a first card post on the bottom surface of the upper tray (20); the first card post matches the first card hole (103) and is locked in the first card hole (103).

10. The cell packaging structure according to claim 9, characterized in that, The battery cell packaging structure also includes a second card hole (104) opened on the top surface of the bottom tray (10) and a second card post set on the bottom surface of the upper tray (20); the second card post matches the second card hole (104) and is locked in the second card hole (104); the second card hole (104) and the first card hole (103) are located on two opposite sides of the bottom tray (10).

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