Lithium battery material packaging bag
Patent Information
- Application Number
- CN202522184305.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-15
AI Technical Summary
然而，现有包装在物料抽检环节存在明显缺陷：抽检时必须破坏热封封口，导致包装完整性丧失，后续存储过程中容易引入水汽、氧气等杂质；在跨境运输时，海关开包检查后需进行二次热封，而二次热封的温度、压力、时间等参数难以与原包装完全一致，极易造成封口处密封性能下降，外界水汽渗入包装内腔，导致材料吸水发生理化性质变异，如出现颗粒团聚、表面析锂、电化学性能衰减等问题，严重影响产品质量和使用安全性
[0019]从上述方案可以看出，本申请公开的锂电池材料包装袋，在运输过程中需要检查时，只需通过取样管取样检查即可，无需拆开整个包装袋本体的热封口，检查完毕后，通过封堵件将取样管密封即可，相比现有技术中需要破坏包装袋本体的热封封口的方式，能够减少锂电池材料吸水变异状况的发生，能够提高锂电池材料的质量。
Smart Images
Figure CN224797552U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery material packaging technology, and more specifically, to a lithium battery material packaging bag. Background Technology
[0002] High-nickel ternary cathode materials (such as NCM811 and NCA) are characterized by high energy density, but they are chemically reactive and extremely sensitive to moisture and oxygen. Currently, the industry commonly uses aluminum-plastic film for vacuum heat sealing to isolate them from the external environment. However, existing packaging has significant defects in the material sampling inspection process: the heat seal must be broken during sampling, resulting in the loss of packaging integrity and making it easy to introduce impurities such as moisture and oxygen during subsequent storage; during cross-border transportation, customs inspection requires secondary heat sealing, but the temperature, pressure, and time parameters of the secondary heat sealing are difficult to completely match with the original packaging, which can easily cause a decrease in the sealing performance at the seal, allowing external moisture to seep into the inner cavity of the packaging, causing the material to absorb water and undergo changes in its physicochemical properties, such as particle agglomeration, surface lithium deposition, and electrochemical performance degradation, seriously affecting product quality and safety.
[0003] Therefore, how to achieve convenient sampling and testing without damaging the integrity of the packaging has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a lithium battery material packaging bag to enable convenient sampling and testing without compromising the integrity of the packaging.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A lithium battery material packaging bag, comprising:
[0007] The packaging bag body is provided with a sampling port, and the sampling port is provided with a sealing element;
[0008] A sampling assembly, comprising a sampling tube and a sealing element, wherein the sampling tube is disposed on the sealing element and communicates with the inner cavity of the packaging bag body, and the sealing element is detachably connected to the end of the sampling tube exposed on the packaging bag body.
[0009] Optionally, in the above-mentioned lithium battery material packaging bag, the sealing element is threaded, flanged, or connected to the sampling tube via a clamp.
[0010] Optionally, the sealing element in the above-mentioned lithium battery material packaging bag is provided with a sealing gasket.
[0011] Optionally, in the above-mentioned lithium battery material packaging bag, the sampling tube passes through the sealing member, and the sampling tube and the sealing member are sealed together.
[0012] Optionally, in the above-mentioned lithium battery material packaging bag, the sealing component includes a sealing component body and a sealing protrusion, the sealing protrusion includes at least one sealing protrusion, the sealing protrusion is in contact with the wall of the sampling port, and the sealing component body is connected to the sealing protrusion.
[0013] Optionally, in the above-mentioned lithium battery material packaging bag, the sealing protrusion is heat-fused, adhesively bonded, or interference-fitted to the packaging bag body; and / or,
[0014] The sealing component is made of rubber or silicone.
[0015] Optionally, in the above-mentioned lithium battery material packaging bag, the packaging bag body includes an outer layer, a middle layer and an inner layer that are sequentially laminated. At the sampling port, the outer layer protrudes outward to form a reinforcing layer, and the area of the reinforcing layer is larger than the area of the sampling port.
[0016] Optionally, in the above-mentioned lithium battery material packaging bag, the sampling tube is made of a flexible material.
[0017] Optionally, in the above-mentioned lithium battery material packaging bag, the diameter of the sampling tube is 1cm-2cm; and / or, the length of the sampling tube is 5cm-8cm.
[0018] Optionally, in the above-mentioned lithium battery material packaging bag, the packaging bag body is provided with a material inlet and a material outlet, the material inlet and the material outlet are arranged opposite to each other, and both are in communication with the inner cavity of the packaging bag body.
[0019] As can be seen from the above solution, when the lithium battery material packaging bag disclosed in this application needs to be inspected during transportation, it is only necessary to take a sample through the sampling tube. There is no need to disassemble the heat seal of the entire packaging bag. After the inspection is completed, the sampling tube can be sealed with a sealing component. Compared with the heat seal of the packaging bag in the prior art, which requires breaking the heat seal of the packaging bag, it can reduce the occurrence of water absorption and variation of lithium battery materials and improve the quality of lithium battery materials. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.
[0021] Figure 1 This is a schematic diagram of the overall structure of the lithium battery material packaging bag disclosed in the embodiments of this application;
[0022] Figure 2 This is a partial schematic diagram of the lithium battery material packaging bag disclosed in the embodiments of this application.
[0023] Among them, 10 is the packaging bag body, 11 is the sampling port, 101 is the outer layer, 102 is the middle layer, 103 is the inner layer, 104 is the reinforcing layer, 12 is the material inlet, and 13 is the material outlet;
[0024] 20 is the sealing component, 21 is the sealing component body, 22 is the sealing protrusion, and 221 is the sealing protrusion;
[0025] 30 is the sampling component, 31 is the sampling tube, 32 is the sealing component, and 33 is the sealing gasket. Detailed Implementation
[0026] The core of this application is to disclose a lithium battery material packaging bag that enables convenient sampling and testing without compromising the integrity of the packaging.
[0027] 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 some embodiments of this application, and not all 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.
[0028] like Figure 1 and Figure 2 As shown in the figure, this application discloses a lithium battery material packaging bag, including a packaging bag body 10 and a sampling component 30. The packaging bag body 10 is provided with a sampling port 11, which can be located on the top or side of the packaging bag body 10. Figure 1 Taking the sampling port 11 located on the side of the packaging bag body 10 as an example, the sampling port 11 is provided with a sealing component 20; the sampling component 30 includes a sampling tube 31 and a sealing component 32. The sampling tube 31 is located on the sealing component 20 and communicates with the inner cavity of the packaging bag body 10. The sealing component 32 is detachably connected to the end of the sampling tube 31 that is exposed outside the packaging bag body 10.
[0029] In actual use, when it is necessary to sample the lithium battery material inside the packaging bag body 10, simply remove the sealing part 32 and use the extraction device to extract the material inside the packaging bag body 10 through the sampling tube 31. After extraction, the sampling tube 31 is sealed by the sealing part 32 to ensure the sealing performance of the packaging bag body 10.
[0030] The lithium battery material packaging bag disclosed in this application can be inspected during transportation simply by taking a sample through the sampling tube 31, without having to disassemble the heat seal of the entire packaging bag body 10. After the inspection is completed, the sampling tube 31 can be sealed by the sealing member 32. Compared with the prior art, which requires breaking the heat seal of the packaging bag body 10, this method can reduce the occurrence of water absorption and variation of lithium battery materials and improve the quality of lithium battery materials.
[0031] Furthermore, in some specific embodiments, the sealing element 32 is threaded, flanged, or connected to the sampling tube 31 via a clamp, preferably by a threaded connection. An internal thread is provided on the inner side of the sampling tube 31, and an external thread is provided on the outer side of the sealing element 32. The two are threaded together, facilitating assembly and disassembly. Figure 2 As shown, in order to improve the sealing performance between the sealing component 32 and the sampling tube 31, the sealing component 32 is provided with a sealing gasket 33.
[0032] Furthermore, in some specific embodiments, the sealing member 20 has a hole, through which the sampling tube 31 passes, and a sealed connection is formed between the sampling tube 31 and the sealing member 20. To improve the sealing performance of the connection between the sampling tube 31 and the sealing member 20, the outer diameter of the sampling tube 31 is slightly larger than the diameter of the hole in the sealing member 20, so that when the sampling tube 31 is inserted, the sealing member 20 tightly wraps around the sampling tube 31, forming an effective seal. Alternatively, sealant or adhesive can be used between the sampling tube 31 and the hole in the sealing member 20 to improve the sealing effect between the sampling tube 31 and the sealing member 20.
[0033] Furthermore, such as Figure 2 As shown, the sealing component 20 includes a sealing component body 21 and a sealing protrusion 22. The sealing component body 21 and the sealing protrusion 22 are connected. The sealing protrusion 22 includes at least one sealing protrusion 221. When there is only one sealing protrusion 221, it is preferably located on the outside of the sampling port 11. Preferably, there are two sealing protrusions 221, which are respectively located on the inside and outside of the sampling port 11. The sealing protrusion 221 is preferably an annular protrusion and fits tightly against the wall of the sampling port 11 to improve the sealing effect.
[0034] It should be noted that the sealing protrusion 221 and the sealing body 21 can be an integral structure or a separate structure. When they are separate structures, the sealing body 21 and the sealing protrusion 22 are preferably interference-fitted. Specifically, at least two stepped segments with progressively decreasing diameters can be provided along the axial direction of the sealing body 21. The sealing protrusion 22 is provided with multi-stage stepped holes corresponding to the stepped segments. The outer diameter of each stepped segment matches the inner diameter of the multi-stage stepped holes, and the outer diameter of each stepped segment is slightly larger than the inner diameter of the corresponding stepped hole. The sealing body 21 is elastically deformed and gradually embedded into the multi-stage stepped holes to achieve a sealing connection between the sealing body 21 and the sealing protrusion 22. The sealing protrusion 22 is heat-fused, bonded, or interference-fitted to the packaging bag body 10. The specific connection method can be determined according to the actual situation. Furthermore, the sealing element 20 is made of rubber or silicone, and the specific material type can be selected according to actual needs.
[0035] Furthermore, such as Figure 2 As shown, the packaging bag body 10 includes an outer layer 101, a middle layer 102, and an inner layer 103 sequentially laminated together. At the sampling port 11, the outer layer 101 protrudes outward to form a reinforcing layer 104. It should be noted that the outward protrusion here refers to the fact that, relative to the inner cavity of the packaging bag body 10, the area of the reinforcing layer 104 is larger than the area of the sampling port 11, so as to enhance the structural strength at the sampling port 11. Specifically, the outer layer 101 is preferably a polypropylene layer, the middle layer 102 is preferably an aluminum foil layer, and the inner layer is preferably a polyethylene layer.
[0036] The lithium battery material packaging bag disclosed in this application uses a sampling tube 31 made of a flexible material, preferably polypropylene. The diameter of the sampling tube 31 is 1cm-2cm; and / or, the length of the sampling tube 31 is 5cm-8cm. It should be noted that the above dimensions of the sampling tube 31 are only examples, and the specific dimensions can be determined according to the actual situation.
[0037] Furthermore, in some specific embodiments, such as Figure 1 As shown, the packaging bag body 10 is provided with a material inlet 12 and a material outlet 13. The material inlet 12 is preferably located at the top of the packaging bag body 10, and the material outlet 13 is preferably located at the bottom of the packaging bag body 10. Both the material inlet 12 and the material outlet 13 are connected to the inner cavity of the packaging bag body 10 and are each provided with a switch valve (not shown in the figure). Material is filled into the packaging bag body 10 through the material inlet 12, and the material is discharged from the packaging bag body 10 through the material outlet 13.
[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0039] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0040] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0041] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A lithium battery material packaging bag, characterized in that, include: The packaging bag body (10) is provided with a sampling port (11) and a sealing element (20) is provided at the sampling port (11). The sampling component (30) includes a sampling tube (31) and a sealing component (32). The sampling tube (31) is disposed on the sealing component (20) and communicates with the inner cavity of the packaging bag body (10). The sealing component (32) is detachably connected to one end of the sampling tube (31) exposed on the packaging bag body (10).
2. The lithium battery material packaging bag as described in claim 1, characterized in that, The sealing element (32) is threaded, flanged, or connected to the sampling tube (31) via a clamp.
3. The lithium battery material packaging bag as described in claim 2, characterized in that, The sealing element (32) is provided with a sealing gasket (33).
4. The lithium battery material packaging bag as described in claim 1, characterized in that, The sampling tube (31) passes through the sealing member (20), and the sampling tube (31) and the sealing member (20) are sealed together.
5. The lithium battery material packaging bag as described in claim 1, characterized in that, The sealing component (20) includes a sealing component body (21) and a sealing protrusion (22). The sealing protrusion (22) includes at least one sealing protrusion (221). The sealing protrusion (221) is attached to the wall of the sampling port (11). The sealing component body (21) is connected to the sealing protrusion (22).
6. The lithium battery material packaging bag as described in claim 5, characterized in that, The sealing protrusion (22) is heat-fused, bonded, or interference-fitted to the packaging bag body (10); and / or, The sealing component body (21) is made of rubber or silicone.
7. The lithium battery material packaging bag as described in claim 1, characterized in that, The packaging bag body (10) includes an outer layer (101), a middle layer (102) and an inner layer (103) that are sequentially laminated. At the sampling port (11), the outer layer (101) protrudes outward to form a reinforcing layer (104), and the area of the reinforcing layer (104) is larger than the area of the sampling port (11).
8. The lithium battery material packaging bag as described in claim 1, characterized in that, The sampling tube (31) is made of a flexible material.
9. The lithium battery material packaging bag as described in claim 8, characterized in that, The diameter of the sampling tube (31) is 1cm-2cm; and / or the length of the sampling tube (31) is 5cm-8cm.
10. The lithium battery material packaging bag as described in any one of claims 1-9, characterized in that, The packaging bag body (10) is provided with a material inlet (12) and a material outlet (13). The material inlet (12) and the material outlet (13) are arranged opposite to each other and are both connected to the inner cavity of the packaging bag body (10).