A material shell dispensing tool for a coin-type energy storage element

Abstract

A dispensing tool for button-type energy storage element housings is used to coat the housings of button-type energy storage elements with conductive adhesive. The tool includes a base, a retraction post, and a dispensing rod. The base includes a material ejection hole, a material groove, and a positioning cylinder. The retraction post includes a column and a retraction hole. The dispensing rod includes a dispensing head, a positioning post, and a retraction head. The dispensing head coats the conductive adhesive onto the inner surface of the housing, and the material groove and positioning cylinder ensure center alignment between the housing and the dispensing head. The retraction post assists in separating the dispensing head from the housing after dispensing. The retraction head and retraction hole remove the housing from the base after dispensing. This invention achieves consistent dispensing volume and area each time, and ensures that the conductive adhesive is coated to the center of the housing, resulting in strong adhesion between the electrode sheet and the housing, low internal resistance, and high consistency.

Description

Technical Field

[0001] This invention relates to the field of energy storage element manufacturing technology, and more specifically, to a button-type energy storage element material shell dispensing tool. Background Technology

[0002] The packaging components of button cell energy storage devices, such as button batteries and button supercapacitors, include a positive electrode shell, a negative electrode cap, and a sealing ring. The positive electrode shell and negative electrode cap are collectively referred to as the material shell, which is stamped from metals such as stainless steel. During the manufacturing of button cell energy storage devices, conductive adhesive is used to bond the electrode sheets to the material shell to reduce internal resistance. The bonding method involves first applying conductive adhesive to the inner surface of the material shell, then covering the electrode sheets on top of the conductive adhesive and pressing them firmly. The process of applying conductive adhesive to the inner surface of the material shell is called dispensing.

[0003] The dispensing process for button-type energy storage elements typically involves using a soft tool like a brush to apply conductive adhesive to the inner surface of the material shell. The drawbacks of this method are obvious. First, the amount of adhesive applied varies each time, sometimes even exceeding the recommended amount. Second, the area covered varies each time, easily resulting in areas that are too small or too large. Third, without a positioning tool, it's difficult to ensure the applied adhesive is precisely centered on the material shell, leading to areas where the adhesive doesn't adhere and others where it extends beyond the electrode surface, affecting aesthetics. While using a small, rigid cylinder instead of a brush can solve the problem of inconsistent adhesive application and area, it doesn't address the positioning issue. Accurately applying the conductive adhesive to the center of the material shell is crucial for reducing internal resistance and improving aesthetics. Therefore, ensuring consistent adhesive application amount and area each time, and guaranteeing the conductive adhesive is centered on the material shell, is a technical problem that needs to be solved. Summary of the Invention

[0004] This invention is a button-type energy storage element material shell dispensing tool proposed to solve the above problems.

[0005] The technical solution of this invention is: a dispensing tool for the material shell of a button-type energy storage element, the tool comprising a base, a retraction post, and a dispensing rod. The base, from bottom to top, includes a material ejection hole, a material groove, and a positioning cylinder. The retraction post, from the outside to the inside, includes a column body and a retraction hole. The dispensing rod, from bottom to top, includes a dispensing head, a positioning post, and a material ejection head.

[0006] The ejector hole is used to remove the material shell from the top of the base after the dispensing operation is completed. To facilitate the insertion and withdrawal of the ejector head, the diameter of the ejector hole is larger than the diameter of the ejector head. To ensure that the material trough can support the material shell, the diameter of the ejector hole is smaller than the bottom diameter of the material shell.

[0007] The material trough is used to position the material shell during the dispensing process. The material trough is a cylindrical space with a diameter equal to the outer diameter of the top of the material shell and a depth equal to the height of the material shell. After the material shell is placed in the base, it fits completely into the material trough.

[0008] The positioning cylinder is used to position the retracting rod and the dispensing rod. The positioning cylinder is a cylindrical space, and its diameter is equal to the outer diameter of the retracting rod and also equal to the diameter of the positioning post of the dispensing rod.

[0009] The function of the retraction post is to assist the dispensing stick in smoothly retracting after dispensing. After dispensing, as the dispensing stick is pulled upwards, the material shell is easily pulled upwards along with it due to the adhesive force of the conductive adhesive. At this time, the retraction post, relying on its own weight, presses down on the material shell, separating it from the dispensing stick. To ensure the free movement of the dispensing stick, the diameter of the retraction hole is larger than the diameter of the dispensing head. Simultaneously, the diameter of the retraction hole is smaller than the outer diameter of the material shell; otherwise, the retraction post cannot press down on the material shell.

[0010] The dispensing head is a rigid cylinder. To ensure sufficient coverage of the conductive adhesive without exceeding the outer perimeter of the electrode sheet, the diameter of the dispensing head is at least 80% of the diameter of the electrode sheet inside the material shell, but smaller than the diameter of the electrode sheet.

[0011] The positioning post is used to ensure that the dispensing head is aligned with the center of the material shell. The diameter of the positioning post is equal to the diameter of the positioning cylinder of the base.

[0012] The function of the ejector head is to insert it through the ejector hole after dispensing, and push the material shell out from the top of the base. The diameter of the ejector head is smaller than the diameter of the ejector hole.

[0013] The advantages of this invention are as follows: This tool ensures that the amount of adhesive applied and the coverage area are the same each time, improving the reliability and consistency of the components. It also ensures that the material shell and the center of the dispensing head are aligned during the dispensing process, so that the applied conductive adhesive is centered on the material shell, reducing the internal resistance of the component and improving the aesthetics of the electrodes. Furthermore, the design of the ejector bar, ejector head, and ejector hole makes the separation of the dispensing bar from the material shell and the removal of the material shell after dispensing very convenient and quick. Attached Figure Description

[0014] Figure 1 This is a longitudinal cross-sectional view of the entire invention.

[0015] Figure 2 This is a longitudinal cross-sectional view of each component of the present invention.

[0016] Figure 3 This is a 3D model of the base.

[0017] Figure 4 This is a three-dimensional diagram of a retractable rod column.

[0018] Figure 5 This is a 3D model of the glue stick.

[0019] In the attached diagram: 1-base; 2-retracting rod post; 3-dispensing rod; 11-retracting hole; 12-material trough; 13-positioning cylinder; 21-pillar; 22-retracting rod hole; 31-dispensing head; 32-positioning rod; 33-retracting head. Implementation

[0020] The invention will be further described below with reference to the accompanying drawings. A dispensing tool for the casing of a button-type energy storage element, as shown in the attached drawing. Figure 1 As shown, the tool includes a base (1), a retraction rod (2), and a dispensing rod (3).

[0021] As attached Figure 2 As shown, the base (1) includes, from bottom to top, a material ejection hole (11), a material trough (12), and a positioning cylinder (13). The ejection rod (2) includes, from outside to inside, a rod body (21) and an ejection hole (22). The dispensing rod (3) includes, from bottom to top, a dispensing head (31), a positioning post (32), and a material ejection head (33).

[0022] As attached Figure 3 As shown, the ejector hole (11) is located at the bottom of the base (1) and is a cylindrical through hole. The diameter of the ejector hole (11) is smaller than the bottom diameter of the material shell.

[0023] The material trough (12) is a cylindrical space with a diameter equal to the outer diameter of the top of the material shell and a depth equal to the height of the material shell.

[0024] The positioning cylinder (13) is a cylindrical space. The diameter of the positioning cylinder (13) is equal to the outer diameter of the column (21) and also equal to the diameter of the positioning column (32).

[0025] As attached Figure 4 As shown, the ejector bar (2) is a hollow cylinder. The outer part of the ejector bar (2) is a cylinder (21), and the hollow middle part is the ejector bar hole (22). The diameter of the ejector bar hole (22) is larger than the diameter of the dispensing head (31), but smaller than the outer diameter of the material shell.

[0026] As attached Figure 5 As shown, the bottom of the dispensing rod (3) is a rigid cylindrical dispensing head (31). The diameter of the dispensing head (31) is more than 80% of the diameter of the electrode sheet inside the material shell, but smaller than the diameter of the electrode sheet.

[0027] The middle part of the dispensing rod (3) is a cylindrical positioning post (32). The diameter of the positioning post (32) is equal to the diameter of the positioning cylinder (13).

[0028] The top of the dispensing rod (3) is a ejector head (33). The diameter of the ejector head (33) is smaller than the diameter of the ejector hole (11).

[0029] Working principle: First, use tweezers to place the material shell (positive electrode shell or negative electrode cover) with the bowl facing up into the material groove (12) of the base (1). At this time, the material shell is completely embedded in the material groove (12).

[0030] Place the retracting rod (2) into the positioning cylinder (13) of the base (1). At this time, the retracting rod (2) falls under its own weight and covers the material shell.

[0031] Dip the dispensing head (31) of the dispensing stick (3) into the conductive adhesive, and then insert the dispensing stick (3) into the base (1) with the dispensing head (31) facing down. Due to the limiting effect of the positioning cylinder (13) on the positioning column (32), the dispensing head (31) will be aligned with the center of the material shell, and at the same time, the dispensing head (31) will coat the dipped conductive adhesive onto the inner surface of the material shell.

[0032] Pull the dispensing stick (3) upwards. Due to the action of the stick retraction column (2), the dispensing head (31) will be smoothly separated from the material shell. Continue to pull the dispensing stick (3) completely out of the base (1).

[0033] Insert the ejector head (33) into the ejector hole (11), and push the material shell and ejector rod (2) upwards. Take out the ejector rod (2) and material shell in sequence to complete the dispensing process.

Claims

1. A material casing dispensing tool for a coin-type energy storage element, characterized by The device comprises a base (1), a rod withdrawing column (2) and a glue dispensing rod (3). The base (1) comprises a material withdrawing hole (11), a material groove (12) and a positioning cylinder (13) from bottom to top. The rod withdrawing column (2) comprises a column body (21) and a rod withdrawing hole (22) from outside to inside. The glue dispensing rod (3) comprises a glue dispensing head (31), a positioning column (32) and a material withdrawing head (33) from bottom to top. During glue dispensing, the rod withdrawing column (2) is put into the positioning cylinder (13) of the base (1), at this time the rod withdrawing column (2) falls under its own gravity and covers above the material shell. During rod withdrawing, the glue dispensing rod (3) is pulled out upward, due to the effect of the rod withdrawing column (2), the glue dispensing head (31) will be separated from the material shell smoothly. During material withdrawing, the material withdrawing head (33) is inserted from the material withdrawing hole (11), and the material shell and the rod withdrawing column (2) are pushed upward, and the rod withdrawing column (2) and the material shell are taken out in turn.

2. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The diameter of the material withdrawing hole (11) is less than the bottom diameter of the material shell.

3. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The material groove (12) is a cylindrical space, the diameter of the material groove (12) is equal to the outer diameter of the top of the material shell, and the depth is equal to the height of the material shell.

4. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The positioning cylinder (13) is a cylindrical space, the diameter of the positioning cylinder (13) is equal to the outer diameter of the column body (21), and also equal to the diameter of the positioning column (32).

5. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The diameter of the rod withdrawing hole (22) is greater than the diameter of the glue dispensing head (31), but less than the outer diameter of the material shell.

6. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The glue dispensing head (31) is a hard cylinder, the diameter of the glue dispensing head (31) is more than 80% of the diameter of the electrode sheet in the material shell, but less than the diameter of the electrode sheet.

7. The material casing dispensing tool for a coin-type energy storage device according to claim 1, wherein The diameter of the material withdrawing head (33) is less than the diameter of the material withdrawing hole (11).

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