Battery cell packaging box

Abstract

The application provides an electric core packaging box. The electric core packaging box comprises a box body, an electric core limiting piece and a protection assembly. The box body is formed with a containing cavity. The electric core limiting piece is arranged in the containing cavity. The electric core limiting piece is formed with a plurality of electric core limiting holes. The electric core limiting piece is used for positioning the electric core inserted into the electric core limiting hole. The protection assembly is arranged in the containing cavity. The protection assembly is formed with a protection cavity. The protection assembly can be sleeved on the end of the electric core. The electric core packaging box of the application can prevent the end of the electric core from being bumped by sleeving the protection assembly on the end of the electric core. The protection assembly can protect the end of the electric core and effectively prevent the electric core from being damaged. Meanwhile, the protection cavity of the protection assembly can support and limit the electric core, preventing the electric core from being tilted during loading or transportation.

Description

Technical Field

[0001] This application relates to the field of battery cell packaging technology, specifically to battery cell packaging boxes. Background Technology

[0002] Battery cell packaging boxes are widely used for battery cell packaging. The main components of a battery cell packaging box include a box body and cutters inside the box. The cutters are made of several cardboard pieces arranged in a cross pattern to form a cavity that can accommodate the battery cell, thereby limiting and installing the battery cell.

[0003] In related technologies, the battery cell packaging boxes are prone to damage during transportation due to impacts on the battery cells. Utility Model Content

[0004] The embodiments of this application provide a battery cell packaging box, which can improve the technical problem that battery cells are easily bumped and damaged.

[0005] In a first aspect, embodiments of this application provide a battery cell packaging box, comprising:

[0006] The box-shaped structure forms a receiving cavity;

[0007] A battery cell limiting member is disposed within the receiving cavity. The battery cell limiting member has multiple battery cell limiting holes and is used to position the battery cell inserted into the battery cell limiting holes.

[0008] A protective component is disposed within the receiving cavity, the protective component having a protective cavity so that the protective component can be fitted onto the end of the battery cell.

[0009] In one embodiment, the protective cavity includes a first protective cavity, and the protective component includes a first gasket. The first gasket is disposed on the side of the cell limiting member away from the bottom wall of the housing, and the first protective cavity is formed on the side of the first gasket facing the cell limiting member, so that the first gasket can be sleeved on the end of the cell.

[0010] By adopting the above technical solution, the end of the battery cell is inserted into the first protective cavity, and the first gasket is sleeved on the end of the battery cell. Thus, the first gasket can protect the end of the battery cell, prevent the end of the battery cell from being bumped, and effectively prevent damage to the battery cell.

[0011] In one embodiment, along the axial direction of the cell limiting hole, the height of the first protective cavity is T1, the height of the cell is T2, and 0.2 ≤ T1 / T2 ≤ 0.3; and / or,

[0012] Along the radial direction of the cell limiting hole, the diameter of the first protective cavity is D1, the diameter of the cell is D2, and 1.02≤D1 / D2≤1.04.

[0013] By adopting the above technical solution, the first protective cavity can provide sufficient radial support for the battery cell, preventing it from tipping over during loading and transportation. This reduces the difficulty of loading and unloading the battery cell, lowers the risk of scratches on the protective film, and ensures the installation stability of the battery cell, avoiding cell shaking and dents.

[0014] In one embodiment, there are multiple first protective cavities, and each of the multiple first protective cavities corresponds to one of the multiple battery cell limiting holes.

[0015] By adopting the above technical solution, different first protective cavities can be used to accommodate the ends of different battery cells, so that the first gasket can protect the ends of different battery cells at the same time.

[0016] In one embodiment, the diameter of the first protective cavity is D1 along the radial direction of the cell limiting hole, wherein,

[0017] Multiple first protective cavities are arrayed, with the minimum distance between the edge of the first protective cavity and the edge of the first gasket being t1, where 0.2 ≤ t1 / D1 ≤ 0.25; and / or,

[0018] The minimum interval between two adjacent first protective cavities is t2, where 0.2 ≤ t2 / D1 ≤ 0.25.

[0019] By adopting the above technical solution, the molding difficulty of the first protective cavity is reduced, while ensuring the number of the first protective cavities and the loading capacity of the battery cells.

[0020] In one embodiment, the first gasket includes a first base and a first sleeve portion connected in sequence, the first sleeve portion being located between the first base and the battery cell limiting member, and the first sleeve portion forming the first protective cavity.

[0021] By adopting the above technical solution, the first sleeve can be sleeved on the end of the battery cell, which can prevent the end of the battery cell from being bumped or knocked, thus protecting the end of the battery cell and effectively preventing damage to the battery cell. At the same time, the first base abuts against the end of the battery cell, and the first base can provide a certain axial elastic support force for the battery cell to improve the installation stability of the battery cell.

[0022] In one embodiment, the thickness of the first substrate is between 20 mm and 30 mm along the axial direction of the cell limiting hole.

[0023] By adopting the above technical solution, the first substrate can provide sufficient elastic support for the battery cell to meet the elastic support requirements of the battery cell.

[0024] In one embodiment, the protective cavity includes a second protective cavity, and the protective component includes a second gasket. The second gasket is disposed between the cell limiting member and the bottom wall of the housing. The second protective cavity is formed on the side of the second gasket facing the cell limiting member, and the second protective cavity is used to fit over the end of the cell.

[0025] By adopting the above technical solution, the end of the battery cell is inserted into the second protective cavity, and the second gasket is sleeved on the end of the battery cell. The second gasket can protect the end of the battery cell, prevent the end of the battery cell from being bumped, and effectively prevent damage to the battery cell.

[0026] In one embodiment, along the axial direction of the cell limiting hole, the height of the second protective cavity is T4, and the height of the cell is T2, 0.5 ≤ T4 / T2 ≤ 0.6; and / or,

[0027] Along the radial direction of the cell limiting hole, the diameter of the second protective cavity is D3, the diameter of the cell is D2, and 1.02≤D3 / D2≤1.04.

[0028] By adopting the above technical solution, the second gasket can provide sufficient lateral support for the battery cell, preventing it from tipping over during loading and transportation. Simultaneously, it avoids the problem of insufficient molding effect in the second protective cavity due to its excessive height. This reduces the difficulty of loading and unloading the battery cell, lowers the risk of scratches on the protective film, and ensures the installation stability of the battery cell, preventing it from shaking or being dented.

[0029] In one embodiment, the second gasket includes a second base and a second sleeve portion connected in sequence, the second sleeve portion being located between the second base and the battery cell limiting member, and the second sleeve portion forming the second protective cavity.

[0030] By adopting the above technical solution, the second sleeve can be sleeved on the end of the battery cell, preventing the end of the battery cell from being bumped or knocked, thus protecting the end of the battery cell and effectively preventing damage to the battery cell. At the same time, the second base abuts against the end of the battery cell, and the second base can provide a certain axial elastic support force for the battery cell to improve the installation stability of the battery cell.

[0031] In one embodiment, the thickness of the second substrate is between 20 mm and 30 mm along the axial direction of the cell limiting hole.

[0032] By adopting the above technical solution, the second substrate can provide sufficient elastic support for the battery cell to meet the elastic support requirements of the battery cell.

[0033] In one embodiment, along the axial direction of the cell limiting hole, the height of the cell limiting member is T3, and the height of the cell is T2, where 0.15≤T3 / T2≤0.3.

[0034] By adopting the above technical solution, the battery cell limiting component can provide sufficient lateral support for the battery cell, preventing it from tipping over during loading and transportation, and ensuring the installation stability of the battery cell.

[0035] In one embodiment, at least one of the cell retaining member and the protective assembly is made of pearl cotton; and / or,

[0036] At least one of the cell limiting component and the protection component has a density greater than 18 kg / m³. 3 .

[0037] By adopting the above technical solution, pearl cotton material possesses excellent cushioning performance, which can effectively improve the cushioning performance of the battery cell limiting components or protective components, thereby providing effective cushioning protection for the battery cell and preventing damage caused by impacts. It also offers advantages such as excellent cushioning effect, cleanliness, safety, reliability, and convenient packaging, solving the problems of paper cutting cards easily generating debris and insufficient cushioning performance. This avoids the situation where the battery cell limiting components and protective components have insufficient hardness, resulting in poor cushioning effect.

[0038] In one embodiment, the protective component is interference-fitted with the housing.

[0039] By adopting the above technical solution, the protection components can be prevented from shaking inside the enclosure, thus ensuring the installation stability of the battery cells.

[0040] In one embodiment, along the width direction of the housing, the protective component is interference-fitted with the wall of the receiving cavity, the interference amount being 3% to 5% of the width of the receiving cavity; and / or,

[0041] Along the length of the enclosure, the protective component is interference-fitted with the enclosure, and the interference amount is 3% to 5% of the length of the receiving cavity.

[0042] By adopting the above technical solution, the installation stability of the protection components is ensured while avoiding excessive installation difficulty and preventing excessive compression of the protection components.

[0043] In one embodiment, the protective cavity includes a first protective cavity and a second protective cavity, the protective assembly includes a first gasket and a second gasket, the cell limiting member is located between the first gasket and the second gasket, the first protective cavity is formed on the side of the first gasket facing the cell limiting member, and the second protective cavity is formed on the side of the second gasket facing the cell limiting member, wherein, along the axial direction of the cell limiting hole, the sum of the height of the first protective cavity, the height of the cell limiting hole and the height of the second protective cavity is less than the height of the cell.

[0044] By adopting the above technical solution, the battery cell can be pressed tightly in the axial direction, ensuring the installation stability of the battery cell.

[0045] The beneficial effects of the embodiments of this application are as follows:

[0046] In the embodiments of this application, when the battery cell is inserted into the battery cell limiting hole, the limiting hole can limit and fix the battery cell, allowing the battery cell limiting component to position the battery cell. Simultaneously, the protective component can be sleeved on the outside of at least one end of the battery cell to protect the end of the battery cell. In other words, by sleeved with the protective component at the end of the battery cell, this application can prevent the end of the battery cell from being bumped or knocked, thus protecting the end of the battery cell and effectively preventing damage. At the same time, the protective cavity of the protective component can also support and limit the battery cell, preventing it from tipping over during loading or transportation. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the structure of the battery cell packaging box provided in an embodiment of this application;

[0049] Figure 2 This is a schematic diagram of the structure of the first gasket provided in an embodiment of this application;

[0050] Figure 3 This is a cross-sectional view of the first gasket provided in an embodiment of this application;

[0051] Figure 4 This is a schematic diagram of the planar structure of the first gasket provided in an embodiment of this application;

[0052] Figure 5 This is a schematic diagram of the structure of the second gasket provided in an embodiment of this application;

[0053] Figure 6 A cross-sectional view of a second gasket provided for an embodiment of this application;

[0054] Figure 7 This is a schematic diagram of the structure of the battery cell limiting component provided in an embodiment of this application;

[0055] Figure 8 A cross-sectional view of a cell limiting member provided for an embodiment of this application.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1. Housing; 2. Cell limiting component; 3. Cell; 4. Protective assembly; 5. Cardboard; 11. Receiving cavity; 21. Cell limiting hole; 41. Protective cavity; 42. First gasket; 43. Second gasket; 411. First protective cavity; 412. Second protective cavity; 421. First base; 422. First sleeve part; 431. Second base; 432. Second sleeve part. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0059] The following is combined with Figures 1 to 8 Describes the battery cell packaging box of this application.

[0060] According to embodiments of this application, such as Figure 1 As shown, the battery cell packaging box includes a box body 1, a battery cell positioning member 2, and a protective component 4. The box body 1 forms a receiving cavity 11. The battery cell positioning member 2 is disposed in the receiving cavity 11 and has multiple battery cell positioning holes 21. The battery cell positioning member 2 is used to position the battery cell 3 inserted into the battery cell positioning holes 21. The protective component 4 is disposed in the receiving cavity 11 and has a protective cavity 41 so that the protective component 4 can be sleeved on the end of the battery cell 3.

[0061] According to the battery cell packaging box of this application embodiment, when the battery cell is inserted into the battery cell limiting hole 21, the battery cell limiting hole 21 can limit and fix the battery cell, so that the battery cell limiting member 2 can position the battery cell. At the same time, the protective component 4 can be sleeved on the outside of at least one end of the battery cell to protect the end of the battery cell. That is to say, by sleeved on the end of the battery cell, the protective component 4 can prevent the end of the battery cell from being bumped or knocked, thereby protecting the end of the battery cell and effectively preventing damage to the battery cell. At the same time, the protective cavity 41 of the protective component 4 can also support and limit the battery cell, preventing the battery cell from tipping over during loading or transportation.

[0062] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, the protective cavity 41 includes a first protective cavity 411, and the protective component 4 includes a first gasket 42. The first gasket 42 is disposed on the side of the cell limiting member 2 away from the bottom wall of the housing 1. The first protective cavity 411 is formed on the side of the first gasket 42 facing the cell limiting member 2, so that the first gasket 42 can be sleeved on the end of the cell 3.

[0063] Thus, by inserting the end of the battery cell into the first protective cavity 411, the first gasket 42 is fitted onto the end of the battery cell, thereby protecting the end of the battery cell from impacts and effectively preventing damage to the battery cell.

[0064] It should be noted that the battery cell includes a first end and a second end that are arranged opposite to each other. The first end is located on the side of the battery cell limiting member 2 away from the bottom wall of the housing 1, and the second end is located on the side of the battery cell limiting member 2 facing the bottom wall of the housing 1. The first gasket 42 is sleeved on the end of the battery cell, which means that the first gasket 42 is sleeved on the first end of the battery cell.

[0065] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, along the axial direction of the cell limiting hole 21, the height of the first protective cavity 411 is T1, the height of the cell is T2, and 0.2≤T1 / T2≤0.3.

[0066] In this way, the first protective cavity 411 can provide sufficient radial support for the battery cell to prevent it from tipping over during loading and transportation.

[0067] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, along the radial direction of the cell limiting hole 21, the diameter of the first protective cavity 411 is D1, the diameter of the cell is D2, and 1.02≤D1 / D2≤1.04.

[0068] Understandably, if the ratio of the diameter of the first protective cavity 411 to the diameter of the battery cell is less than 1.02, the battery cell will be difficult to install and remove, and the protective film of the battery cell may be easily scratched; if the ratio of the diameter of the first protective cavity 411 to the diameter of the battery cell is greater than 1.04, the battery cell may wobble. Therefore, in this embodiment, the ratio of the diameter of the first protective cavity 411 to the diameter of the battery cell is set between 1.02 and 1.04, which reduces the difficulty of installing and removing the battery cell, reduces the risk of scratching the protective film of the battery cell, and at the same time ensures the installation stability of the battery cell, avoiding battery cell wobble and dents.

[0069] It is understandable that if the ratio of the diameter of the first protective cavity 411 to the diameter of the battery cell is greater than 1.04, the width of the rib between adjacent first protective cavities 411 may be insufficient to withstand the force of the battery cell, which may lead to the battery cell being bumped. Therefore, in this embodiment, the ratio of the diameter of the first protective cavity 411 to the diameter of the battery cell is set between 1.02 and 1.04.

[0070] In some embodiments, there are multiple first protective cavities 411, and each of the multiple first protective cavities 411 corresponds to a multiple battery cell limiting hole 21.

[0071] It is understandable that different first protective cavities 411 can be used to accommodate the ends of different battery cells, so that the first gasket 42 can simultaneously protect the ends of different battery cells.

[0072] In some embodiments, the diameter of the first protective cavity 411 is D1 along the radial direction of the cell limiting hole 21.

[0073] Specifically, such as Figure 4 As shown, multiple first protective cavities 411 are arrayed, and the minimum distance between the first protective cavity 411 located at the edge and the edge of the first gasket 42 is t1, 0.2≤t1 / D1≤0.25.

[0074] Understandably, if t1 / D1 is less than 0.2, the distance between the edge of the first protective cavity 411 and the edge of the first gasket 42 is too small, which is not conducive to the molding of the first protective cavity 411; if t1 / D1 is greater than 0.3, the number of first protective cavities 411 that can be formed by the first gasket 42 is limited, which leads to insufficient cell loading and increased packaging costs. Therefore, in this embodiment, t1 / D1 is designed to be between 0.2 and 0.3, which reduces the molding difficulty of the first protective cavity 411 while ensuring the number of first protective cavities 411 and thus ensuring the cell loading.

[0075] It is understandable that the first protective cavity 411 located at the edge refers to the outermost ring of first protective cavities 411 among the multiple first protective cavities 411 distributed in the array.

[0076] Specifically, such as Figure 4 As shown, the minimum interval between two adjacent first protective cavities 411 is t2, 0.2≤t2 / D1≤0.25.

[0077] Understandably, if t2 / D1 is less than 0.2, the minimum interval between two adjacent first protective cavities 411 is too small, which is not conducive to the molding of the first protective cavity 411; if t2 / D1 is greater than 0.3, the number of first protective cavities 411 that can be formed by the first gasket 42 is limited, which leads to insufficient cell loading and increased packaging costs. Therefore, in this embodiment, t2 / D1 is designed to be between 0.2 and 0.3, which reduces the molding difficulty of the first protective cavity 411, while ensuring the number of first protective cavities 411 and ensuring the cell loading.

[0078] In some embodiments, such as Figure 5 and Figure 6 As shown, the first gasket 42 includes a first base 421 and a first sleeve portion 422 connected in sequence. The first sleeve portion 422 is located between the first base 421 and the cell limiting member 2, and the first sleeve portion 422 forms a first protective cavity 411.

[0079] Thus, the first sleeve 422 can be sleeved on the end of the battery cell, preventing the end of the battery cell from being bumped or knocked, thus protecting the end of the battery cell and effectively preventing damage to the battery cell. At the same time, the first base 421 abuts against the end of the battery cell, and the first base 421 can provide a certain axial elastic support force for the battery cell to improve the installation stability of the battery cell.

[0080] Specifically, along the axial direction of the cell limiting hole 21, the thickness of the first base 421 is between 20mm and 30mm.

[0081] In this way, the first substrate 421 can provide sufficient elastic support for the battery cell to meet the elastic support requirements of the battery cell.

[0082] In some embodiments, such as Figure 5 and Figure 6 As shown, the protective cavity 41 includes a second protective cavity 412, and the protective component 4 includes a second gasket 43. The second gasket 43 is disposed between the cell limiting member 2 and the bottom wall of the housing 1. The second protective cavity 412 is formed on the side of the second gasket 43 facing the cell limiting member 2. The second protective cavity 412 is used to be sleeved on the end of the cell 3.

[0083] Thus, by inserting the end of the battery cell into the second protective cavity 412, the second gasket 43 is fitted onto the end of the battery cell, thereby protecting the end of the battery cell from impacts and effectively preventing damage to the battery cell.

[0084] It should be noted that the battery cell includes a first end and a second end that are positioned opposite each other. The first end is located on the side of the battery cell limiting member 2 away from the bottom wall of the housing 1, and the second end is located on the side of the battery cell limiting member 2 facing the bottom wall of the housing 1. The second gasket 43 is sleeved on the end of the battery cell, meaning that the second gasket 43 is sleeved on the second end of the battery cell.

[0085] In some embodiments, such as Figure 5 and Figure 6 As shown, along the axial direction of the cell limiting hole 21, the height of the second protective cavity 412 is T4, and the height of the cell is T2, 0.5≤T4 / T2≤0.6.

[0086] In this way, the second gasket 43 can provide sufficient lateral support for the battery cell to prevent it from tipping over during loading and transportation, while also avoiding the problem of insufficient molding effect of the second protective cavity 412 due to its excessive height.

[0087] In some embodiments, such as Figure 5 and Figure 6 As shown, along the radial direction of the cell limiting hole 21, the diameter of the second protective cavity 412 is D3, the diameter of the cell is D2, and 1.02≤D3 / D2≤1.04.

[0088] Understandably, if the ratio of the diameter of the second protective cavity 412 to the diameter of the battery cell is less than 1.02, the battery cell will be difficult to install and remove, and the protective film of the battery cell may be easily scratched; if the ratio of the diameter of the second protective cavity 412 to the diameter of the battery cell is greater than 1.04, the battery cell may wobble. Therefore, in this embodiment, the ratio of the diameter of the second protective cavity 412 to the diameter of the battery cell is set between 1.02 and 1.04, which reduces the difficulty of installing and removing the battery cell, reduces the risk of scratching the protective film of the battery cell, and at the same time ensures the installation stability of the battery cell, avoiding battery cell wobble and dents.

[0089] It is understandable that if the ratio of the diameter of the second protective cavity 412 to the diameter of the battery cell is greater than 1.04, the width of the rib between adjacent second protective cavities 412 may be insufficient to withstand the force of the battery cell, which may lead to the battery cell being bumped. Therefore, in this embodiment, the ratio of the diameter of the second protective cavity 412 to the diameter of the battery cell is set between 1.02 and 1.04.

[0090] In some embodiments, such as Figure 5 and Figure 6 As shown, the second gasket 43 includes a second base 431 and a second sleeve portion 432 connected in sequence. The second sleeve portion 432 is located between the second base 431 and the battery cell limiting member 2, and the second sleeve portion 432 forms a second protective cavity 412.

[0091] Thus, the second sleeve 432 can be sleeved on the end of the battery cell, preventing the end of the battery cell from being bumped or knocked, thus protecting the end of the battery cell and effectively preventing damage to the battery cell. At the same time, the second base 431 abuts against the end of the battery cell, and the second base 431 can provide a certain axial elastic support force for the battery cell to improve the installation stability of the battery cell.

[0092] Specifically, along the axial direction of the cell limiting hole 21, the thickness of the second base 431 is between 20mm and 30mm.

[0093] Thus, the second substrate 431 can provide sufficient elastic support for the battery cell to meet the elastic support requirements of the battery cell.

[0094] In some embodiments, such as Figure 7 and Figure 8 As shown, along the axial direction of the cell limiting hole 21, the height of the cell limiting member 2 is T3, and the height of the cell is T2, 0.15≤T3 / T2≤0.3.

[0095] Thus, in the height direction, the cell limiting component 2 can provide sufficient lateral support for the cell, preventing it from tipping over during loading and transportation, and ensuring the installation stability of the cell.

[0096] In some embodiments, a plurality of cell limiting holes 21 are arrayed, and the minimum distance between the cell limiting hole 21 located at the edge and the edge of the cell limiting member 2 is between 0.2 and 0.3 and the diameter of the cell limiting hole 21.

[0097] It is understandable that if the ratio of the minimum distance between the edge of the cell limiting hole 21 and the edge of the cell limiting member 2 to the diameter of the cell limiting hole 21 is less than 0.2, then the distance between the edge of the cell limiting hole 21 and the edge of the cell limiting member 2 is too small, which is not conducive to the forming of the cell limiting hole 21. If the ratio of the minimum distance between the edge of the cell limiting hole 21 and the edge of the cell limiting member 2 to the diameter of the cell limiting hole 21 is greater than 0.3, then the number of cell limiting holes 21 that can be formed by the cell limiting member 2 is limited, which leads to insufficient cell loading and increased packaging costs. Therefore, in this embodiment, the ratio of the minimum distance between the edge of the cell limiting hole 21 and the edge of the cell limiting member 2 to the diameter of the cell limiting hole 21 is designed to be between 0.2 and 0.3, which reduces the forming difficulty of the cell limiting hole 21, while ensuring the number of cell limiting holes 21 and ensuring the cell loading.

[0098] It is understandable that the cell limiting hole 21 located at the edge refers to the outermost ring of cell limiting holes 21 among the multiple cell limiting holes 21 distributed in the array.

[0099] In some embodiments, the ratio between the minimum interval between two adjacent cell limiting holes 21 and the diameter of the cell limiting hole 21 is between 0.2 and 0.3.

[0100] Understandably, if the ratio of the minimum interval between two adjacent cell limiting holes 21 to the diameter of the cell limiting hole 21 is less than 0.2, then the minimum interval between two adjacent cell limiting holes 21 is too small, which is not conducive to the forming of the cell limiting holes 21. If the ratio of the minimum interval between two adjacent cell limiting holes 21 to the diameter of the cell limiting hole 21 is greater than 0.3, then the number of cell limiting holes 21 that can be formed by the cell limiting component 2 is limited, which leads to insufficient cell loading and increased packaging costs. Therefore, in this embodiment, the ratio of the minimum interval between two adjacent cell limiting holes 21 to the diameter of the cell limiting hole 21 is designed to be between 0.2 and 0.3, which reduces the forming difficulty of the cell limiting holes 21, while ensuring the number of cell limiting holes 21 and ensuring the cell loading.

[0101] In some examples, the cell limiting member 2 is, for example, a knife clip. The minimum distance between the cell limiting hole 21 located at the edge and the edge of the cell limiting member 2, and the minimum interval between two adjacent cell limiting holes 21, refers to the rib thickness of the knife clip.

[0102] In some embodiments, at least one of the cell limiting member 2 and the protective component 4 is made of pearl cotton.

[0103] It is understandable that pearl cotton material has excellent cushioning performance, which can effectively improve the cushioning performance of the battery cell limiting component 2 or the protection component 4, so as to effectively cushion and protect the battery cell and prevent the battery cell from being damaged by bumps and impacts. It also has the advantages of excellent cushioning effect, cleanliness, safety and reliability, and convenient packaging, which solves the problems of paper cut-out cards being prone to generating debris and insufficient cushioning performance.

[0104] In some embodiments, at least one of the cell limiting member 2 and the protection component 4 has a density greater than 18 kg / m³. 3 .

[0105] This is to avoid the situation where the hardness of the cell limiting component 2 and the protection component 4 is too small, resulting in poor buffering effect.

[0106] It is understandable that when the density of the cell limiting component 2 is lower than 18 kg / m³, 3 When this happens, the cell limiting component 2 becomes too soft, which makes it difficult for the cell limiting component 2 to provide effective buffer protection for the cell.

[0107] When the density of protective component 4 is less than 18 kg / m³ 3 When this happens, the protective component 4 becomes too flexible, making it difficult for it to effectively buffer and protect the battery cell.

[0108] In some examples, the density of at least one of the cell limiting member 2 and the protection component 4 may be 22 kg / m3, 25 kg / m3, 28 kg / m3, 30 kg / m3, or 32 kg / m3, or any other suitable density value.

[0109] In some embodiments, the protective component 4 is interference-fitted with the housing 1.

[0110] In this way, the protection component 4 can be prevented from shaking inside the housing 1, ensuring the installation stability of the battery cell.

[0111] For example, when the protective component 4 includes a first gasket 42 and a second gasket 43, at least one of the first gasket 42 and the second gasket 43 may be interference-fitted with the housing 1.

[0112] Specifically, along the width direction of the housing 1, the protective component 4 is interference-fitted with the wall of the receiving cavity 11, and the interference amount is 3% to 5% of the width of the receiving cavity 11.

[0113] It is understandable that before the protective component 4 is installed in the receiving cavity 11, the width of the protective component 4 will be greater than the width of the receiving cavity 11, so that after the protective component 4 is installed in the receiving cavity 11, the protective component 4 will be interference-fitted with the inner wall surface of the housing 1, thus ensuring the installation stability of the protective component 4.

[0114] Understandably, if the interference fit is less than 3% of the width of the cavity 11, the installation stability of the protective component 4 may be insufficient. If the interference fit is greater than 5% of the width of the cavity 11, the installation will be more difficult and may lead to excessive compression of the protective component 4. Therefore, in this embodiment, the interference fit between the protective component 4 and the wall of the cavity 11 is set between 3% and 5% of the width of the cavity 11. This ensures the installation stability of the protective component 4 while avoiding excessive installation difficulty and preventing excessive compression of the protective component 4.

[0115] For example, this embodiment can also be understood as the width side of the protective component 4 being interference-fitted with the wall of the receiving cavity 11.

[0116] Specifically, along the length of the housing 1, the protective component 4 is interference-fitted with the housing 1, and the interference amount is 3% to 5% of the length of the receiving cavity 11.

[0117] It is understandable that before the protective component 4 is installed in the receiving cavity 11, the length of the protective component 4 will be greater than the length of the receiving cavity 11, so that after the protective component 4 is installed in the receiving cavity 11, the protective component 4 will be interference-fitted with the inner wall surface of the housing 1, thus ensuring the installation stability of the protective component 4.

[0118] Understandably, if the interference fit is less than 3% of the length of the receiving cavity 11, the installation stability of the protective component 4 may be insufficient. If the interference fit is greater than 5% of the length of the receiving cavity 11, the installation will be more difficult and may lead to excessive compression of the protective component 4. Therefore, in this embodiment, the interference fit between the protective component 4 and the wall of the receiving cavity 11 is set between 3% and 5% of the length of the receiving cavity 11. This ensures the installation stability of the protective component 4 while avoiding excessive installation difficulty and preventing excessive compression of the protective component 4.

[0119] For example, this embodiment can also be understood as the long side of the protective component 4 being interference-fitted with the wall of the receiving cavity 11.

[0120] In some embodiments, the protective cavity 41 includes a first protective cavity 411 and a second protective cavity 412, the protective component 4 includes a first gasket 42 and a second gasket 43, the cell limiting member 2 is located between the first gasket 42 and the second gasket 43, the first protective cavity 411 is formed on the side of the first gasket 42 facing the cell limiting member 2, and the second protective cavity 412 is formed on the side of the second gasket 43 facing the cell limiting member 2, wherein, along the axial direction of the cell limiting hole 21, the sum of the height of the first protective cavity 411, the height of the cell limiting hole 21 and the height of the second protective cavity 412 is less than the height of the cell 3.

[0121] In this way, the battery cell can be pressed tightly in the axial direction, ensuring the installation stability of the battery cell.

[0122] In some embodiments, such as Figure 1 As shown, the second gasket 43 is located between the cell limiting member 2 and the bottom wall of the box 1. The cell packaging box also includes cardboard 5, which is located between the second gasket 43 and the bottom wall of the box 1.

[0123] Understandably, cardboard 5 serves a protective function, preventing damage to the battery cells during handling and transportation due to bumps or impacts.

[0124] In some examples, the cardboard 5 is, for example, a single-wall or double-wall corrugated cardboard 5. Single-wall corrugated cardboard 5 types include, for example, K3K, K3A, K3B, etc., and double-wall corrugated cardboard 5 types include, for example, K=K, K=A, K=B, A=A, H636H, etc.

[0125] In some embodiments, the type of box 1 is, for example, a slotted type 02, a nesting type 03, or a folding type carton 04.

[0126] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery cell packaging box, characterized in that, include: The box-shaped structure forms a receiving cavity; A battery cell limiting member is disposed within the receiving cavity. The battery cell limiting member has multiple battery cell limiting holes and is used to position the battery cell inserted into the battery cell limiting holes. A protective component is disposed within the receiving cavity, the protective component having a protective cavity, so that the protective component can be sleeved on the end of the battery cell; The protective component includes at least one of a first gasket and a second gasket, wherein the first gasket is disposed on the side of the cell limiting member away from the bottom wall of the housing, and the second gasket is disposed between the cell limiting member and the bottom wall of the housing.

2. The battery cell packaging box according to claim 1, characterized in that, The protective cavity includes a first protective cavity, and the first gasket has the first protective cavity formed on the side facing the battery cell limiting member, so that the first gasket can be sleeved on the end of the battery cell.

3. The battery cell packaging box according to claim 2, characterized in that, Along the axial direction of the cell limiting hole, the height of the first protective cavity is T1, the height of the cell is T2, and 0.2 ≤ T1 / T2 ≤ 0.3; and / or, Along the radial direction of the cell limiting hole, the diameter of the first protective cavity is D1, the diameter of the cell is D2, and 1.02≤D1 / D2≤1.

04.

4. The battery cell packaging box according to claim 2, characterized in that, There are multiple first protective cavities, and each of the multiple first protective cavities corresponds to one of the multiple battery cell limiting holes.

5. The battery cell packaging box according to claim 2, characterized in that, Along the radial direction of the cell limiting hole, the diameter of the first protective cavity is D1, wherein, Multiple first protective cavities are arrayed, with the minimum distance between the edge of the first protective cavity and the edge of the first gasket being t1, where 0.2 ≤ t1 / D1 ≤ 0.25; and / or, The minimum interval between two adjacent first protective cavities is t2, where 0.2 ≤ t2 / D1 ≤ 0.

25.

6. The battery cell packaging box according to claim 2, characterized in that, The first gasket includes a first base and a first sleeve portion connected in sequence. The first sleeve portion is located between the first base and the battery cell limiting member, and the first sleeve portion forms the first protective cavity.

7. The battery cell packaging box according to claim 6, characterized in that, Along the axial direction of the cell limiting hole, the thickness of the first substrate is between 20 mm and 30 mm.

8. The battery cell packaging box according to any one of claims 1 to 7, characterized in that, The protective cavity includes a second protective cavity, which is formed on the side of the second gasket facing the battery cell limiting member. The second protective cavity is used to be sleeved on the end of the battery cell.

9. The battery cell packaging box according to claim 8, characterized in that, Along the axial direction of the cell limiting hole, the height of the second protective cavity is T4, and the height of the cell is T2, 0.5≤T4 / T2≤0.6; and / or, Along the radial direction of the cell limiting hole, the diameter of the second protective cavity is D3, the diameter of the cell is D2, and 1.02≤D3 / D2≤1.

04.

10. The battery cell packaging box according to claim 8, characterized in that, The second gasket includes a second base and a second sleeve portion connected in sequence. The second sleeve portion is located between the second base and the cell limiting member, and the second sleeve portion forms the second protective cavity.

11. The battery cell packaging box according to claim 10, characterized in that, Along the axial direction of the cell limiting hole, the thickness of the second substrate is between 20 mm and 30 mm.

12. The battery cell packaging box according to any one of claims 1 to 7, characterized in that, Along the axial direction of the cell limiting hole, the height of the cell limiting member is T3, and the height of the cell is T2, 0.15≤T3 / T2≤0.

3.

13. The battery cell packaging box according to any one of claims 1 to 7, characterized in that, At least one of the cell limiting component and the protective assembly is made of pearl cotton; and / or, At least one of the cell limiting component and the protection component has a density greater than 18 kg / m³. 3 .

14. The battery cell packaging box according to any one of claims 1 to 7, characterized in that, The protective component is interference-fitted with the enclosure.

15. The battery cell packaging box according to claim 14, characterized in that, Along the width direction of the housing, the protective component is interference-fitted with the wall of the receiving cavity, the interference amount being 3% to 5% of the width of the receiving cavity; and / or, Along the length of the housing, the protective component is interference-fitted with the housing, and the interference amount is 3% to 5% of the length of the receiving cavity.

16. The battery cell packaging box according to any one of claims 1 to 7, characterized in that, The protective cavity includes a first protective cavity and a second protective cavity. The protective assembly includes a first gasket and a second gasket. The cell limiting member is located between the first gasket and the second gasket. The first protective cavity is formed on the side of the first gasket facing the cell limiting member, and the second protective cavity is formed on the side of the second gasket facing the cell limiting member. The sum of the height of the first protective cavity, the height of the cell limiting hole, and the height of the second protective cavity along the axial direction of the cell limiting hole is less than the height of the cell.

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