High-temperature resistant lithium battery anode material aluminum foil ton bag

Abstract

This utility model relates to the field of ton bag technology and discloses a high-temperature resistant aluminum foil ton bag for lithium battery negative electrode materials. It includes a bag body and a lifting strap connected to the upper part of the bag body. A reinforced bottom is fixedly connected to the bottom of the bag body. The bag body has a multi-layer composite structure, consisting of an outer layer, an adhesive layer, an aluminum foil layer, and an inner layer from the outside to the inside. The outer layer is a polyphenylene sulfide fiber woven fabric layer, used to maintain the stability of the bag's shape and provide continuous physical strength when packaging and transporting negative electrode materials at high temperatures. In this utility model, the multi-layer composite structure allows the ton bag to withstand high-temperature materials without deformation or damage, ensuring physical safety during transportation and storage. Furthermore, the aluminum foil layer and anti-static inner layer effectively isolate moisture and oxygen and eliminate static electricity hazards, thus comprehensively protecting the chemical stability and safety of the lithium battery negative electrode material, improving the product's reliability and durability.

Description

Technical Field

[0001] This utility model relates to the field of ton bag technology, and in particular to aluminum foil ton bags for high-temperature resistant lithium battery negative electrode materials. Background Technology

[0002] Aluminum foil, with its excellent barrier properties, corrosion resistance, and good electrical and thermal conductivity, is widely used in food packaging, electronics, chemicals, and new energy fields. Aluminum foil ton bags are packaging products used for packaging and transporting bulk powder or sheet materials. They typically employ a multi-layer composite material structure with an internal aluminum foil layer to enhance overall moisture resistance, oxidation resistance, and antistatic properties. These bags are large in volume and have high load-bearing capacity, effectively protecting the safety and quality stability of the internal materials during transportation and storage.

[0003] Existing aluminum foil bulk bags are primarily designed for packaging powders and flakes under normal temperature or conventional environments. Their structure typically employs double or triple-layer composite materials to enhance tear resistance and moisture resistance. However, in high-temperature environments, such as during the furnace drying or high-temperature transport of some lithium battery anode materials, conventional bulk bags lack sufficient thermal stability. They are prone to deformation, melting, or material delamination due to high temperatures, leading to packaging failure, powder leakage, or increased risks of moisture absorption and oxidation. Furthermore, while some existing bulk bags offer moisture protection, their protection against static-sensitive materials is limited, posing a potential risk of static electricity buildup and discharge. Therefore, high-temperature resistant aluminum foil bulk bags for lithium battery anode materials are proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant aluminum foil ton bag for lithium battery negative electrode materials, aiming to improve the problem of packaging failure and powder leakage caused by high-temperature deformation, melting or material delamination in the existing technology.

[0005] To achieve the above objectives, the present invention provides a high-temperature resistant lithium battery negative electrode material aluminum foil ton bag, which includes a bag body and a sling connected to the upper part of the bag body. A reinforced bag bottom is fixedly connected to the bottom of the bag body. The bag body has a multi-layer composite structure, which consists of an outer layer, an adhesive layer, an aluminum foil layer and an inner layer from the outside to the inside.

[0006] Optionally, the bag body and the straps connected to the upper part of the bag body, the bottom of the bag body is fixedly connected to a reinforced bag bottom, the bag body is a multi-layer composite structure, which consists of an outer layer, an adhesive layer, an aluminum foil layer and an inner layer from the outside to the inside.

[0007] Optionally, the reinforced bag bottom is made of high-strength polypropylene woven fabric to resist ground friction, prevent bottom damage, and enhance the overall load-bearing capacity when the ton bag is lifted and placed by a forklift or crane.

[0008] Optionally, the inner layer is an antistatic film layer, which serves to discharge static electricity generated by friction during the filling process, thereby preventing electrostatic sparks from posing a safety hazard to the lithium battery material.

[0009] Optionally, the adhesive layer is a high-temperature resistant coating layer, which ensures that the outer layer and the aluminum foil layer remain bonded under high temperature and external force, preventing separation between the functional layers of the bag.

[0010] Optionally, a reinforcing fabric is fixedly connected to the upper edge of the bag body, and the sling is fixedly connected to the upper edge of the bag body through the reinforcing fabric.

[0011] The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag provided in this embodiment of the utility model has at least one of the following technical effects:

[0012] In this invention, the multi-layer composite structure enables the ton bag to withstand high-temperature materials without deformation or damage, ensuring physical safety during transportation and storage. It also effectively isolates moisture and oxygen and eliminates static electricity hazards through the aluminum foil layer and anti-static inner layer, thereby comprehensively protecting the chemical stability and safety of the lithium battery negative electrode material and improving the reliability and durability of the product. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional schematic diagram of the aluminum foil ton bag for high-temperature resistant lithium battery negative electrode material proposed in this utility model.

[0015] Figure 2 This is a side view of the aluminum foil ton bag for high-temperature resistant lithium battery negative electrode material proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the multi-layer composite structure of the aluminum foil ton bag for high-temperature resistant lithium battery negative electrode material proposed in this utility model.

[0017] The following are the labeling elements in the figure:

[0018] 1. Bag body; 2. Reinforced bag bottom; 3. Reinforcing fabric; 4. Lifting straps; 5. Outer layer; 6. Adhesive layer; 7. Aluminum foil layer; 8. Inner layer. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] Reference Figures 1-3This utility model provides an embodiment of a high-temperature resistant lithium battery negative electrode material aluminum foil ton bag, comprising a bag body 1 and a lifting strap 4 connected to the upper part of the bag body 1. A reinforced bag bottom 2 is fixedly connected to the bottom of the bag body 1, improving the impact resistance and durability of the ton bag. The bag body 1 has a multi-layer composite structure, consisting of an outer layer 5, an adhesive layer 6, an aluminum foil layer 7, and an inner layer 8 from the outside to the inside. The outer layer 5 is a polyphenylene sulfide fiber woven fabric layer, used to maintain the stability of the shape of the bag body 1 and provide continuous physical strength when packaging and transporting negative electrode materials with high temperatures, effectively preventing the bag body 1 from softening, creeping, or breaking due to high temperatures. This ensures that the bag body 1 remains sturdy and reliable under harsh transportation and storage conditions, protecting the safety of the materials. The reinforced bag bottom 2 is made of high-strength polypropylene woven fabric, used to resist ground friction and prevent bottom damage when the ton bag is lifted and placed by a forklift or crane, and to enhance the overall strength. The inner layer 8 is an anti-static film layer, which dissipates static electricity generated by friction during the filling process, preventing electrostatic sparks from posing a safety hazard to the lithium battery material. The adhesive layer 6 is a high-temperature resistant coating layer, which ensures that the outer layer 5 and the aluminum foil layer 7 remain bonded under high temperature and external force, preventing separation between the functional layers of the bag body 1 and ensuring the integrity of the overall structure of the bag body 1. The aluminum foil layer 7 has excellent moisture-proof, oxygen-proof, light-proof, and shielding properties, effectively preventing moisture and oxygen from entering the bag and avoiding chemical performance degradation or even failure of the negative electrode material due to moisture absorption or oxidation. A reinforcing cloth 3 is fixedly connected to the upper edge of the bag body 1, and the lifting strap 4 is fixedly connected to the upper edge of the bag body 1 through the reinforcing cloth 3, which evenly distributes the tension generated by the lifting strap 4 to the bag body 1, effectively preventing tearing at the connection between the lifting strap 4 and the bag body 1 due to stress concentration.

[0024] Working principle: The outer layer 5, made of polyphenylene sulfide fiber woven fabric, is responsible for maintaining the stability and continuous physical strength of the bag body 1 at high temperatures. Together with the reinforced bag bottom 2 made of high-strength polypropylene woven fabric, it resists friction and impact during transportation and handling. The lifting straps 4 are connected to the bag body 1 through the reinforcing fabric 3 to ensure the safety of lifting. At the same time, the aluminum foil layer 7 acts as a barrier, effectively preventing the intrusion of external substances such as water vapor and oxygen, and protecting the stability of the chemical properties of the materials. The antistatic film layer of the inner layer 8 is responsible for dissipating the static electricity generated by friction during the filling process, avoiding safety hazards caused by static sparks. Finally, the functional layers are bonded together by a high-temperature resistant coating layer to ensure that the entire bag body 1 remains intact and does not delaminate under high temperature and external force, thus achieving all-round safety protection for the materials.

[0025] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant aluminum foil ton bag for lithium battery negative electrode material, comprising a bag body (1) and a strap (4) connected to the upper part of the bag body (1), characterized in that: The bottom of the bag body (1) is fixedly connected to a reinforced bag bottom (2). The bag body (1) is a multi-layer composite structure, which consists of an outer layer (5), an adhesive layer (6), an aluminum foil layer (7), and an inner layer (8) from the outside to the inside.

2. The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag according to claim 1, characterized in that: The outer layer (5) is a polyphenylene sulfide fiber woven fabric layer, which is used to maintain the stability of the shape of the bag (1) and provide continuous physical strength when packaging and transporting negative electrode materials with high temperatures.

3. The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag according to claim 1, characterized in that: The reinforced bag bottom (2) is made of high-strength polypropylene woven fabric to resist ground friction, prevent bottom damage, and enhance the overall load-bearing capacity when the ton bag is lifted and placed by a forklift or crane.

4. The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag according to claim 1, characterized in that: The inner layer (8) is an antistatic film layer, which is used to discharge the static electricity generated by friction during the filling process and avoid static sparks from causing safety hazards to lithium battery materials.

5. The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag according to claim 1, characterized in that: The adhesive layer (6) is a high-temperature resistant coating layer. Its function is to ensure that the outer layer (5) and the aluminum foil layer (7) are always bonded under high temperature and external force, and to prevent separation between the functional layers of the bag body (1).

6. The high-temperature resistant lithium battery negative electrode material aluminum foil ton bag according to claim 1, characterized in that: The upper edge of the bag body (1) is fixedly connected with a reinforcing cloth (3), and the sling (4) is fixedly connected to the upper edge of the bag body (1) through the reinforcing cloth (3).

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