Button battery

Abstract

The utility model relates to the technical field of batteries, and in particular to a button battery, including a battery body and a colloid shell, wherein the circumferential outer wall at one end of the battery body has a folded edge formed by folding outward, and the colloid shell is wrapped around the end of the battery body with the folded edge by injection molding, and the colloid shell is wrapped around the outside of the folded edge. The button battery of the utility model can avoid the operation of encapsulating the outer wall of the battery body with glue by injection molding the colloid shell on the battery body, and improve the production efficiency; when the battery body is impacted by external force, the colloid shell can play a buffering role and effectively protect the battery; the colloid shell wraps the end of the battery body with the folded edge and the folded edge, which can effectively improve the sealing performance of the button battery, prevent battery leakage, avoid the problem of internal short circuit, and improve the safety performance of the battery; the colloid shell can also play a waterproof role, and effectively protect the battery from corrosion when the product is flooded.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a button battery. Background Art

[0002] Button Cell, also known as button battery, refers to a battery with the appearance and size of a button, which is usually larger in diameter and thinner in thickness. Due to its small size, button batteries have been widely used in various micro-electronic products. They are generally used as backup power sources for various electronic products, such as Bluetooth headsets, electronic watches, electronic dictionaries, electronic scales, remote controls, etc. Button batteries are divided into two categories: chemical batteries and physical batteries. Among them, chemical batteries are the most commonly used, mainly composed of an anode, a cathode and its electrolyte. The existing button batteries only have a layer of adhesive tape wrapped around the outside of the battery cell, and have poor impact resistance and waterproof performance. During the use of the product, it is easy for water to enter the battery, causing corrosion, and it is easy for the battery to leak when it falls, posing certain safety hazards. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a button battery, so as to at least solve the problems of poor impact resistance and waterproof performance of the outer coating of the battery core of the existing button battery, as well as battery leakage.

[0004] The utility model solves the above technical problems through the following technical means:

[0005] The utility model provides a button battery, comprising a battery cell body and a colloid shell, wherein a circumferential outer wall at one end of the battery cell body is provided with a folded edge formed by folding outwards, the circumferential outer wall of the folded edge is provided with a plurality of grooves, and the plurality of grooves are distributed in a ring array, the colloid shell is wrapped around the end of the battery cell body having the folded edge by injection molding, and the colloid shell is wrapped around the outside of the folded edge.

[0006] In some embodiments, the gap between the battery cell body and the folded edge is filled with a portion of the colloid of the colloid shell.

[0007] In some embodiments, a colloid block is provided on the circumferential inner wall of the colloid shell, and the colloid block partially fills the gap between the battery cell body and the folded edge.

[0008] In some embodiments, the colloidal mass is completely located within the colloidal shell.

[0009] In some embodiments, the groove is filled with a portion of the colloid of the colloid shell.

[0010] In some embodiments, a double-sided adhesive pad is disposed on the end surface of the battery cell body, and the double-sided adhesive pad is located in the colloid shell.

[0011] In some embodiments, a tab is connected to the battery cell body, and the tab is located on the outside of the double-sided adhesive pad.

[0012] In some embodiments, the battery cell body further includes an electronic wire, one end of which is connected to the electrode tab.

[0013] In some embodiments, the electronic wire is located on a side of the double-sided adhesive pad facing away from the battery cell body.

[0014] The button battery of the utility model is characterized in that a colloid shell is injection-molded on the battery body, and the top surface and the folded edge of the battery body are completely wrapped in the colloid shell. On the one hand, the operation of encapsulating the outer wall of the battery body with glue can be avoided, thereby improving the production efficiency; on the other hand, when the battery body is impacted by external force, the colloid shell can play a buffering role and effectively protect the battery; on still another hand, the colloid shell wraps the end of the battery body with the folded edge and the folded edge, which can effectively improve the sealing performance of the button battery, prevent battery leakage, avoid the problem of internal short circuit, and improve the safety performance of the battery; finally, the colloid shell can also play a waterproof role, and when the product is flooded, it can effectively protect the battery and avoid corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a button battery of the utility model;

[0016] Figure 2 It is a schematic diagram of the explosion structure of the button battery of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the button battery of the utility model before the colloid shell is injected;

[0018] Figure 4 It is a structural schematic diagram of the colloid shell of the utility model;

[0019] Figure 5 yes Figure 3 The enlarged view of point A in the middle;

[0020] Among them, there are a battery cell body 1, a colloid shell 2, a folded edge 3, a colloid block 4, a double-sided adhesive pad 5, a pole ear 6, an electronic wire 7, a groove 8, and a gap 9. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0022] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The existing button battery has only one layer of adhesive tape wrapped around the outside of the battery cell, and the mechanical and waterproof properties are poor. As a result, the button battery is easily corroded by water during use, and easily leaks when it falls, which poses certain safety hazards. To this end, the utility model proposes a button battery, which is injected with a colloid shell on the battery body, and the top surface and folded edge of the battery body are all wrapped in the colloid shell. On the one hand, it can avoid the operation of encapsulating the outer wall of the battery body with glue, thereby improving production efficiency; on the other hand, when the battery body is impacted by external force, the colloid shell can play a buffering role and effectively protect the battery; on the other hand, the colloid shell wraps the end of the battery body with the folded edge and the folded edge, which can effectively improve the sealing performance of the button battery, prevent battery leakage, avoid the problem of internal short circuit, and improve the safety performance of the battery; finally, the colloid shell can also play a waterproof role, effectively protecting the battery and avoiding corrosion when the product is flooded.

[0024] For details, please refer to Figure 1-5The button battery of the utility model includes a battery body 1 and a colloid shell 2. The circumferential outer wall at one end of the battery body 1 has a folded edge 3 formed by folding outwards. The circumferential outer wall of the folded edge 3 has a plurality of grooves 8, and the plurality of grooves 8 are distributed in a ring array. The colloid shell 2 is wrapped around the end of the battery body 1 with the folded edge 3 by injection molding, and the colloid shell 2 is wrapped around the outside of the folded edge 3, that is, the inner wall of the colloid shell 2 and the outer wall of the folded edge 3 are fixedly connected by colloid. Through the above technical scheme, the wrapping and sealing of the battery body 1 and the folded edge 3 are directly realized by injection molding, which reduces the encapsulation process of general button batteries and improves production efficiency. In addition, when subjected to external impact or water ingress, the colloid shell 2 can play a buffering and waterproof role, which can effectively protect the battery body 1 and improve the safety performance of the button battery.

[0025] The material of the colloid shell 2 may be a filling material such as plastic or curing glue. In addition, a label may be provided on the outer side or top surface of the colloid shell 2 so as to intuitively display the parameter information of the button battery.

[0026] In order to further improve the sealing performance of the button battery, the gap 9 between the battery body 1 and the folded edge 3 is filled with part of the colloid of the colloid shell 2, and the groove 8 is also filled with part of the colloid of the colloid shell 2. That is, when the colloid shell 2 is injected, part of the material of the colloid shell 2 will be filled in the gap 9 between the battery body 1 and the folded edge 3, and will also be filled in the groove 8. Specifically, the circumferential inner wall of the colloid shell 2 has a colloid block 4, and the colloid block 4 is partially filled in the gap between the battery body 1 and the folded edge 3 and the groove 8, and the colloid block 4 is completely located in the colloid shell 2. The colloid filled in the groove 8 and the colloid block 4 and the colloid shell 2 work together to wrap the entire battery body 1, so as to achieve a stable sealed connection between the colloid shell 2 and the battery body 1.

[0027] The end surface of the cell body 1 of the button battery of the present invention is provided with a double-sided adhesive pad 5, and the double-sided adhesive pad 5 is located in the colloid shell 2. The double-sided adhesive pad 5 is made of insulating material, for example, it can be an insulating double-sided adhesive foam. The cell body 1 is connected with a pole ear 6, and the pole ear 6 is located on the outside of the double-sided adhesive pad 5. The pole ear 6 is connected to the cell body 1 to realize the conduction of the battery.

[0028] The button battery of the utility model further comprises an electronic wire 7, one end of which is connected to the pole ear 6. The electronic wire 7 can be a wire, a nickel sheet, a metal sheet or an FPC. The electronic wire 7 is located on the side of the double-sided adhesive pad 5 away from the battery body 1.

[0029] When the button battery of the utility model is manufactured, the battery body 1 is placed in a mold in advance, and then a filling material such as plastic or curing glue is injection molded on the battery body 1 and the folded edge 3 to form a colloid shell 2 that wraps and covers the battery body 1 and the folded edge 3. The formed colloid shell 2 not only wraps the folded edge 3 and one end of the battery body 1, but also partially fills the gap 9 between the battery body 1 and the folded edge 3 and the groove 8, so as to achieve the sealing of the button battery and prevent internal leakage.

[0030] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A button battery, comprising a battery cell body, characterized in that: It also includes a colloidal shell, wherein the circumferential outer wall at one end of the battery cell body has a folded edge formed by folding outward, and the circumferential outer wall of the folded edge has a plurality of grooves, and the plurality of grooves are distributed in a circular array, and the colloidal shell is wrapped around the end of the battery cell body with the folded edge by injection molding, and the colloidal shell is wrapped around the outside of the folded edge, and the colloidal shell wraps and covers the battery cell body and the folded edge.

2. The button battery according to claim 1, characterized in that: The gap between the battery cell body and the folded edge is filled with part of the colloid of the colloid shell.

3. The button battery according to claim 2, characterized in that: A colloid block is provided on the circumferential inner wall of the colloid shell, and the colloid block is partially filled in the gap between the battery core body and the folded edge.

4. The button battery according to claim 3, characterized in that: The colloid mass is completely located in the colloid shell.

5. The button battery according to claim 1, characterized in that: The groove is filled with a portion of the colloid of the colloid shell.

6. The button battery according to claim 1, characterized in that: The end surface of the battery core body is provided with a double-sided adhesive pad, and the double-sided adhesive pad is located in the colloid shell.

7. The button battery according to claim 6, characterized in that: The battery cell body is connected with a pole ear, and the pole ear is located on the outer side of the double-sided rubber pad.

8. The button battery according to claim 7, characterized in that: The button battery also includes an electronic wire, one end of which is connected to the pole ear.

9. The button battery according to claim 8, characterized in that: The electronic wire is located on the side of the double-sided adhesive pad away from the battery body.

Images