Drying agent for lithium battery copper foil storage

Abstract

The utility model discloses a drying agent for lithium battery copper foil storage, which comprises a drying agent layer, the bottom of the drying agent layer is provided with a cloth blocking layer, the bottom of the cloth blocking layer is provided with an inorganic compound water absorption layer, and the weight ratio of the drying agent layer to the inorganic compound water absorption layer is 1: 1. According to the utility model, a single drying agent in the prior art is matched with an inorganic compound water-absorbing material for use, so that the drying effect can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of desiccants used for copper foil storage, specifically a desiccant for lithium battery copper foil storage. Background Technology

[0002] Lithium-ion battery copper foil requires a very dry environment during transportation and storage; otherwise, oxidation can easily occur on the end faces. Currently, silica gel is commonly used as a desiccant for copper foil storage. While silica gel is less prone to moisture absorption, it is far less sensitive to moisture than calcium oxide. Calcium oxide has high water absorption and is more sensitive to moisture, but it is easily heated and absorbs moisture; if used alone, it may also cause oxidation of the copper foil end faces.

[0003] Therefore, in order to correct the above-mentioned defects, we propose a desiccant for storing lithium-ion battery copper foil. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a desiccant for storing copper foil for lithium batteries.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desiccant for storing lithium battery copper foil, comprising a desiccant layer, a cloth barrier layer at the bottom of the desiccant layer, and an inorganic compound water-absorbing layer at the bottom of the cloth barrier layer.

[0006] Furthermore, the weight ratio between the desiccant layer and the inorganic compound absorbent layer is 1:1.

[0007] Furthermore, the desiccant layer is one of silica gel, alumina gel, or molecular sieve.

[0008] Furthermore, the desiccant layer is silica gel.

[0009] Furthermore, the fabric barrier layer is either cotton or non-woven fabric.

[0010] Furthermore, the inorganic compound absorbent layer is one of calcium oxide, calcium sulfate, and quicklime.

[0011] Furthermore, the inorganic compound absorbent layer is calcium oxide.

[0012] Compared with the prior art, the beneficial effects of this utility model are: this utility model combines a single desiccant with an inorganic compound water-absorbing material, which can improve the drying effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Numbering on the map:

[0015] 1. Desiccant layer; 2. Fabric barrier layer; 3. Inorganic compound absorbent layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides a technical solution:

[0018] Please see Figure 1 A desiccant for storing lithium battery copper foil includes a desiccant layer 1, a cloth barrier layer 2 at the bottom of the desiccant layer 1, and an inorganic compound water-absorbing layer 3 at the bottom of the cloth barrier layer 2. The desiccant layer 1 is one of silica gel, alumina gel, and molecular sieve; the cloth barrier layer 2 is one of cotton cloth and non-woven fabric; and the inorganic compound water-absorbing layer 3 is one of calcium oxide, calcium sulfate, and quicklime.

[0019] The desiccant layer 1 is preferably made of silica gel, the cloth barrier layer 2 is preferably made of cotton cloth, and the inorganic compound water-absorbing layer 3 is preferably made of calcium oxide. The desiccant packaging tape is separated into upper and lower layers by a cotton cloth layer. Calcium oxide is placed in the lower layer and silica gel is placed in the upper layer. The ratio of calcium oxide to silica gel is 1:1 by weight. This utilizes the sensitivity of calcium oxide to moisture and allows silica gel to absorb any moisture that may be generated by the calcium oxide. The reason for separating calcium oxide and silica gel with a cotton cloth layer is that silica gel absorbs water due to its porosity. If the two are mixed, it will affect the drying effect of silica gel.

[0020] When using it, make sure that calcium oxide is in the bottom layer and silica gel is in the top layer.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A desiccant for storing lithium-ion battery copper foil, characterized in that: It includes a desiccant layer (1), the bottom of which has a fabric barrier layer (2), and the bottom of the fabric barrier layer (2) has an inorganic compound water-absorbing layer (3).

2. The desiccant for storing lithium-ion battery copper foil according to claim 1, characterized in that: The weight ratio between the desiccant layer (1) and the inorganic compound water-absorbing layer (3) is 1:

1.

3. The desiccant for storing lithium-ion battery copper foil according to any one of claims 1 or 2, characterized in that: The desiccant layer (1) is one of silica gel, alumina gel, or molecular sieve.

4. The desiccant for storing lithium-ion battery copper foil according to claim 3, characterized in that: The desiccant layer (1) is silica gel.

5. The desiccant for storing lithium-ion battery copper foil according to any one of claims 1 or 2, characterized in that: The fabric barrier layer (2) is one of cotton or non-woven fabric.

6. The desiccant for storing lithium-ion battery copper foil according to any one of claims 1 or 2, characterized in that: The inorganic compound absorbent layer (3) is one of calcium oxide, calcium sulfate, and quicklime.

7. The desiccant for storing lithium-ion battery copper foil according to claim 6, characterized in that: The inorganic compound water-absorbing layer (3) is calcium oxide.

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