Insulation space ring applied to cylindrical battery

Abstract

The utility model discloses an insulating space ring applied to a cylindrical battery, which comprises a space ring body, the space ring body is integrally formed by injection molding, and the space ring body is arranged on the end face of the cylindrical battery, and is particularly arranged between a shell of the cylindrical battery and a cylindrical battery roll core. The space ring body comprises an insulation section located between a shell of the cylindrical battery and a cylindrical battery roll core and an extension section connected with the insulation section, and the wall thickness of the insulation cover is 0.08-0.25 mm. Compared with the prior art, the space ring has the beneficial effects that the traditional glue winding process is replaced, the product assembly standardization is realized, the assembly efficiency is improved, and the production cost is reduced. In addition, the adopted PP material is good in insulation performance, short circuit is prevented, the safety performance of the product is improved, the adopted PP material is extremely high in weather resistance and not prone to aging, the service life of the battery is greatly prolonged, in addition, the shape and the wall thickness of the cover top can be designed according to actual use requirements, and the application range of the product is expanded.

Description

Technical Field

[0001] The utility model relates to an insulating spacer ring applied to a cylindrical battery, belonging to the technical field of battery accessories. Background Art

[0002] The existing manufacturing processes for full-tab lithium batteries all involve sealing the core end faces with glue. This process has the following technical problems: the glue wrapping process involves steps such as tape cutting and positioning, which inevitably complicates the process and increases processing costs; the glue wrapping process easily causes the tape to turn inside out, resulting in a poor appearance, and burrs or debris on the end faces of the battery shell can easily pierce the tape, greatly reducing the consistency and pass rate of the battery; the glue wrapping process requires the tape to seal the entire end face, and if the battery has an accident such as a short circuit, the heat inside cannot be discharged in time, which can easily lead to consequences such as explosions; after a battery that has been completed with the glue wrapping process has been used for a long time, the glue will fall off due to aging of the glue, causing a battery short circuit and other serious safety accidents. In addition, the glue wrapping process does not have a flame retardant technical effect and cannot meet personalized customization needs. Utility Model Content

[0003] In view of the above problems existing in the prior art, the purpose of the utility model is to provide an insulating spacer used in cylindrical batteries, which optimizes the product structure, replaces the traditional glue wrapping process, and solves the above technical problems.

[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0005] An insulating spacer used on a cylindrical battery includes a spacer body, which is integrally injection-molded and installed on the end face of the cylindrical battery, specifically, between the outer shell of the cylindrical battery and the cylindrical battery roll core. The spacer body includes an insulating section located between the outer shell of the cylindrical battery and the cylindrical battery roll core and an extension section connected to the insulating section. The wall thickness of the insulating cover is set to 0.08-0.25mm.

[0006] Preferably, the insulating segment port plane is parallel to the battery shell port plane, and the insulating segment is completely clamped between the cylindrical battery shell and the cylindrical battery roll core. Since the insulating segment wall thickness is set to 0.08-0.25mm, the battery roll core can be fully wound to maximize the battery capacity.

[0007] Preferably, the extension section is a circular ring structure, and this type of extension section structure is suitable for conventional types of battery seals.

[0008] Preferably, the extension section is a cover-shaped structural member, and an opening and a notch are provided at the top of the extension section. The extension section is a sealing structure used according to personalized needs or different models of batteries.

[0009] Preferably, the extension section is a cover-shaped structural member, and an opening is provided at the top of the extension section. The extension section is a sealing structure used according to personalized needs or different models of batteries.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The use of three-dimensional spacers can fully realize automatic loading and greatly improve the production efficiency of batteries;

[0012] 2. The three-dimensional spacer is used. Since the product is made by injection molding, there will be no problem of the gel turning outward or the gel being pierced by the burrs of the battery shell, which will greatly improve the battery qualification rate and product assembly consistency;

[0013] 3. The three-dimensional spacer is used. Because there is no seal between the three-dimensional spacer and the cap, the hot air will be quickly released outward through the explosion-proof cap to avoid safety accidents. And the thickness of the spacer in the part where the battery core contacts the steel shell can be 0.1mm. The fit between the battery core and the shell is very good, and the battery core will not shake. Because the injection-molded three-dimensional spacer is used, the battery core is wrapped all around, and the insulation effect is better. The material used is PP, which is flexible and the spacer is not easy to be damaged, which greatly improves safety.

[0014] 4. It uses PP three-dimensional spacer, the material itself is extremely weather-resistant and not easy to age, which greatly improves the service life of the battery;

[0015] 5. It can meet personalized needs, such as modifying materials, adding flame retardant and other technical effects, and expanding the scope of application of the product. In addition, the shape of the cover can be designed according to actual use needs, expanding the scope of application of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of an insulating spacer ring applied to a cylindrical battery provided by the utility model;

[0017] Figure 2 It is a structural schematic diagram of a preferred embodiment of an insulating spacer ring applied to a cylindrical battery provided by the utility model;

[0018] Figure 3 It is a structural schematic diagram of a preferred embodiment of an insulating spacer applied to a cylindrical battery provided by the utility model. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail and in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0020] Figure 1-3The figure is a schematic diagram of a preferred embodiment of an insulating spacer ring applied to a cylindrical battery provided by the utility model. Figure 1-3 As shown, the insulating spacer used in the cylindrical battery includes a spacer body 1, which is integrally injection-molded and installed on the end face of the cylindrical battery, specifically, between the outer shell of the cylindrical battery and the cylindrical battery roll core. The spacer body 1 includes an insulating section 101 located between the outer shell of the cylindrical battery and the cylindrical battery roll core and an extension section 102 connected to the insulating section 101. The wall thickness of the insulating cover is set to 0.08-0.25mm, the port plane of the insulating section is parallel to the port plane of the battery shell, and the extension section is a circular ring structure. This structural design is suitable for the sealing structure of conventional models.

[0021] It is worth noting that, according to the usage requirements and battery specifications, the following two structures are provided: the extension section 102 is a cover-like structure, and an opening 201 and a notch 202 are provided at the top of the extension section; alternatively, the extension section 102 is a cover-like structure, and only an opening 301 is provided at the top of the extension section 102. The extension section is a sealing structure used for personalized needs or different models of batteries.

[0022] During the implementation process, it is only necessary to install the insulating section of the spacer body between the outer shell of the cylindrical battery and the cylindrical battery roll core.

[0023] Finally, it is necessary to explain here that the above embodiments are only used to further illustrate the technical solution of the utility model in detail and cannot be understood as limiting the protection scope of the utility model. Some non-essential improvements and adjustments made by technicians in this field based on the above content of the utility model belong to the protection scope of the utility model.

Claims

1. An insulating spacer used in a cylindrical battery, comprising a spacer body, the spacer body is integrally injection molded, the spacer body is installed on the end face of the cylindrical battery, specifically, between the outer shell of the cylindrical battery and the cylindrical battery roll core, characterized in that: The spacer body includes an insulating section located between the outer shell of the cylindrical battery and the cylindrical battery roll core and an extension section connected to the insulating section, and the wall thickness of the insulating cover is set to 0.08-0.25mm.

2. The insulating spacer used in a cylindrical battery according to claim 1, characterized in that: The insulating section port plane is parallel to the battery housing port plane.

3. The insulating spacer used in a cylindrical battery according to claim 1, characterized in that: The extension section is a circular ring structure.

4. An insulating spacer used in a cylindrical battery according to any one of claims 2-3, characterized in that: The extension section is a cover-shaped structural member, and an opening and a notch are arranged on the top of the extension section.

5. An insulating spacer used in a cylindrical battery according to any one of claims 2-3, characterized in that: The extension section is a cover-shaped structural member, and an opening is arranged at the top of the extension section.

Images