A cylindrical battery casing welding fixture

By designing a welding fixture for cylindrical battery casings, the problems of poor welding sealing and low production efficiency were solved, achieving a high-quality and safe welding process that is suitable for various battery casings.

CN224273937UActive Publication Date: 2026-05-26宁德聚能动力电源系统技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
宁德聚能动力电源系统技术有限公司
Filing Date
2025-05-06
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing cylindrical battery welding process has poor sealing, which can easily lead to electrolyte leakage, posing a safety hazard, and also results in low production efficiency.

Method used

A cylindrical battery casing welding fixture is designed, comprising a base plate, a connecting plate, a steel casing fixture fixing plate, a steel casing fixture, an ultrasonic welding head fixing device, and a welding device fixing seat. Welding is achieved through precise design and robotic arm rotation, ensuring accurate positioning and stability.

Benefits of technology

It improves welding quality and production efficiency, reduces production costs, enhances safety and versatility, and is applicable to welding processes for various cylindrical battery casings.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a cylindrical battery casing welding fixture, relating to the field of cylindrical battery manufacturing technology. It includes a base plate, a connecting plate, a steel casing clamp fixing plate, a steel casing clamp, an ultrasonic welding head fixing device, and a welding device fixing seat. The steel casing clamp is fixed to the base plate via the steel casing clamp fixing plate, and the steel casing clamp holds the steel casing. A welding device fixing seat is provided on the base plate, and an ultrasonic welding head fixing device is provided on the welding device fixing seat. A welding head fixing clamp is provided at the inner end of the ultrasonic welding head fixing device, and the welding head is clamped on the welding head fixing clamp. The bottom inner sides of both the steel casing clamp and the welding head fixing clamp are connected to the connecting plate. This utility model has a reasonable structural design, is convenient and reliable to use, greatly improves production efficiency, and has strong practicality.
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Description

Technical Field

[0001] This utility model relates to the field of cylindrical battery production design, specifically to a cylindrical battery casing welding fixture. Background Technology

[0002] Cylindrical batteries are widely used in various fields, including solar lighting, power tools, toy models, and photovoltaic energy storage. These batteries have high capacity and long cycle life, meeting the needs of different application scenarios. A complete cylindrical battery consists of cylindrical bare cells, an electrolyte, and a cylindrical steel casing. The steel-cased battery is made of high-quality steel, offering excellent fire resistance, pressure resistance, and sealing performance. This effectively prevents electrolyte leakage and also prevents external substances from entering the battery, ensuring stable operation. Generally, the bottom of a cylindrical steel-cased battery needs to be sealed by welding. Poor sealing can easily lead to electrolyte leakage and cause safety accidents. To ensure welding accuracy and sealing, this invention designs a cylindrical battery casing welding fixture to address this issue. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cylindrical battery casing welding fixture with reasonable structural design, convenient and reliable use, which greatly improves production efficiency and has strong practicality.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a cylindrical battery casing welding fixture, comprising a base plate, a connecting plate, a steel casing fixture fixing plate, a steel casing fixture, an ultrasonic welding head fixing device, and a welding device fixing seat. The steel casing fixture is fixed on the base plate by the steel casing fixture fixing plate, and a steel casing is clamped on the steel casing fixture. A welding device fixing seat is provided on the base plate, and an ultrasonic welding head fixing device is provided on the welding device fixing seat. A welding head fixing fixture is provided at the inner end of the ultrasonic welding head fixing device, and a welding head is clamped on the welding head fixing fixture. The bottom inner sides of both the steel casing fixture and the welding head fixing fixture are connected to the connecting plate.

[0005] Preferably, the welding head is positioned opposite the welding point of the steel shell.

[0006] The beneficial effects of this utility model are: the structural design of this utility model is reasonable, which improves production efficiency, ensures welding quality, reduces production costs, and is applicable to welding processes of various cylindrical battery casings. Attached Figure Description

[0007] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0008] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0009] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0010] Reference Figure 1 The specific embodiment adopts the following technical solution: a cylindrical battery casing welding fixture, including a base plate 1, a connecting plate 2, a steel casing fixture fixing plate 3, a steel casing fixture 4, an ultrasonic welding head fixing device 5, and a welding device fixing seat 6. The steel casing fixture 4 is fixed on the base plate 1 by the steel casing fixture fixing plate 3, and a steel casing 8 is clamped on the steel casing fixture. The welding device fixing seat 6 is provided on the base plate 1, and the ultrasonic welding head fixing device 5 is provided on the welding device fixing seat 6. A welding head fixing fixture 9 is provided at the inner end of the ultrasonic welding head fixing device 5, and a welding head 7 is clamped on the welding head fixing fixture 9. The bottom inner sides of the steel casing fixture 4 and the welding head fixing fixture 9 are both connected to the connecting plate 2.

[0011] It is worth noting that the welding head 7 is positioned opposite the welding point of the steel shell 8.

[0012] In this specific embodiment, the steel shell to be welded is placed on the steel shell fixture, and an external robotic arm clamps the steel shell and rotates it 360 degrees. The ultrasonic welding head completes the welding along the position to be welded.

[0013] This specific embodiment ensures accurate positioning of the steel shell and welding head through the precise design of the steel shell clamp and welding head fixing clamp, thereby improving welding quality. An external robotic arm can clamp the steel shell and rotate it 360 degrees, making the welding process more automated, reducing manual intervention, and improving production efficiency. The design of components such as the base plate, connecting plate, and steel shell clamp fixing plate makes the entire clamp structure compact and easy to operate. This clamp can adapt to steel shells of different sizes and shapes, exhibiting strong versatility. The design of the ultrasonic welding head fixing device and welding head fixing clamp ensures the stability of the welding head during the welding process, thus guaranteeing the consistency and stability of welding quality. The design of the fixing device and clamp reduces potential safety hazards during welding, improving operational safety. The modular design allows for easy replacement and maintenance of various components, reducing maintenance costs. This welding clamp has significant advantages in improving production efficiency, ensuring welding quality, and reducing production costs, and is suitable for welding processes of various cylindrical battery shells.

[0014] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cylindrical battery case welding jig characterized by comprising: The assembly includes a base plate (1), a connecting plate (2), a steel shell clamp fixing plate (3), a steel shell clamp (4), an ultrasonic welding head fixing device (5), and a welding device fixing seat (6). The steel shell clamp (4) is fixed on the base plate (1) by the steel shell clamp fixing plate (3). The steel shell clamp (4) holds a steel shell (8). The welding device fixing seat (6) is provided on the base plate (1). The ultrasonic welding head fixing device (5) is provided on the welding device fixing seat (6). The welding head fixing clamp (9) is provided at the inner end of the ultrasonic welding head fixing device (5). The welding head (7) is held on the welding head fixing clamp (9). The bottom inner sides of the steel shell clamp (4) and the welding head fixing clamp (9) are connected to the connecting plate (2).

2. The cylindrical battery case welding jig according to claim 1, wherein The welding head (7) is positioned opposite the welding point of the steel shell (8).