A lithium battery online testing fixture

Abstract

This utility model discloses an online testing fixture for lithium batteries, including a base plate, a support plate, a support plate reinforcing plate, a tray, a probe mounting plate, push rods, a cylinder, and probes. The cylinder is located on one side of the base plate, and a support plate connected to the end of the base plate is located outside the cylinder. Support plate reinforcing plates are located on both sides of the support plate. The cylinder rod is connected to the tray. The bottom ends of the tray are connected to the two ends of the probe mounting plate via cross push rods. The probe mounting plate is located at the other end of the base plate and has probes mounted on it. This utility model has a reasonable structural design, is suitable for automated production, and ensures smooth movement of the tray through cross push rods. It can guarantee reliable connection between the probes and battery terminals for stable and accurate testing. It also has the potential to develop intelligent recognition functions and is highly versatile, which can improve testing efficiency and production quality control.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing, specifically to a lithium battery online testing fixture. Background Technology

[0002] With the development of new energy vehicles, energy storage systems, and portable electronic devices, the demand for lithium-ion batteries is growing rapidly. To meet the demands of large-scale production, battery manufacturers generally adopt automated assembly lines. During the lithium battery production process, after assembly, individual cells need to undergo testing for electrical properties such as voltage, capacity, and internal resistance to screen out cells with good consistency and ensure stable performance after subsequent module assembly.

[0003] However, many testing processes still rely on manual insertion and removal of test probes or the use of low-precision general-purpose fixtures. This not only results in low testing efficiency but also problems such as poor contact and unstable test data. Furthermore, failure to promptly identify defects occurring during manufacturing, such as electrode misalignment or separator flaws, can easily lead to rapid performance degradation of the battery later on, and even safety hazards. Therefore, designing a high-precision, high-efficiency battery testing fixture suitable for automated production lines has become an important means to improve the quality control level of lithium battery production.

[0004] The "barrel effect" is a common problem in battery pack assembly, where the overall performance of a module is limited by the worst-performing cell. Therefore, consistency screening is particularly crucial. A well-designed online testing fixture should have the ability to quickly locate batteries, reliably contact test points, automate operation, and intelligently identify and reject defective products.

[0005] To address the problems of low detection efficiency, poor contact, and inability to identify manufacturing defects in existing technologies, this invention provides an online testing fixture for lithium batteries, which enables efficient, stable, and integrated online testing of individual battery cells into automated production lines. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a lithium battery online testing fixture with a reasonable structural design that is suitable for automated production. The cross push rods ensure smooth movement of the tray, guaranteeing reliable connection between the probe and the battery terminal for stable and accurate testing. It also has the potential to develop intelligent recognition functions and is highly versatile, thereby improving testing efficiency and production quality control.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a lithium battery online testing fixture, comprising a base plate, a support plate, a support plate reinforcing plate, a tray plate, a probe mounting plate, a push rod, a cylinder, and probes. The cylinder is disposed on one side of the base plate, and a support plate connected to the end of the base plate is disposed on the outside of the cylinder. Support plate reinforcing plates are disposed on both sides of the support plate. The cylinder rod of the cylinder is connected to the tray plate. The bottom ends of the tray plate are connected to the two ends of the probe mounting plate through cross push rods. The probe mounting plate is disposed at the other end of the base plate, and probes are disposed on the probe mounting plate.

[0008] Preferably, the probe is connected to the terminal of the battery being tested.

[0009] Preferably, the push rods are connected at their intersections via a pivot shaft, and the ends of the push rods are connected to a hinge shaft.

[0010] The beneficial effects of this utility model are:

[0011] 1. Improved testing efficiency: This fixture can be integrated into automated production lines and operated in conjunction with external robotic arms to quickly complete the placement, clamping, and testing of batteries. This avoids the tedious manual insertion and removal of test probes, greatly improving the efficiency of lithium battery performance testing and meeting the needs of large-scale production.

[0012] 2. Ensure testing stability: The cylinder pushes the push rod to clamp the battery, ensuring a reliable connection between the probe and the battery terminal. This effectively avoids poor contact and ensures stable and accurate test data, providing a reliable basis for screening out cells with good consistency.

[0013] 3. Great potential for expansion of intelligent identification and rejection functions: As part of an automated production line, this fixture is easy to cooperate with other testing and analysis equipment. It can be further developed to have intelligent identification and rejection functions for unqualified products, timely detection of defects in the manufacturing process, such as electrode misalignment and separator defects, etc., improve the quality control level of lithium battery production, and reduce the rapid degradation of battery performance and safety hazards in the later stage.

[0014] 4. Stable structure: The support plate is reinforced on both sides, which enhances the overall structural stability of the fixture. It can withstand the force generated when the cylinder pushes, ensuring the stability of the fixture's performance during long-term use and reducing detection errors caused by structural loosening.

[0015] 5. Strong adaptability: It can be appropriately adjusted according to different specifications of lithium batteries, such as changing push rods of different lengths, adjusting the position of the tray and probe mounting plate, etc., to adapt to the testing needs of lithium batteries of different sizes and terminal positions, and has strong versatility and adaptability. Attached Figure Description

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a bottom view of the present invention. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-2 The specific embodiment adopts the following technical solution: a lithium battery online testing fixture, including a base plate 1, a support plate 2, a support plate reinforcing plate 3, a support plate 4, a probe mounting plate 5, a push rod 6, a cylinder 7 and a probe 8. The cylinder 7 is disposed on one side of the base plate 1, and the support plate 2 connected to the end of the base plate 1 is disposed on the outside of the cylinder 7. The support plate reinforcing plates 3 are disposed on both sides of the support plate 2. The cylinder rod of the cylinder 7 is connected to the support plate 4. The bottom ends of the support plate 4 are connected to the two ends of the probe mounting plate 5 through the cross push rods 6. The probe mounting plate 5 is disposed on the other end of the base plate 1, and the probe 8 is disposed on the probe mounting plate 5.

[0021] It is worth noting that the probe 8 is connected to the terminal of the battery being tested.

[0022] Furthermore, the push rods 6 are connected at their intersections via a pivot 61, and the ends of the push rods 6 are connected to a hinge shaft 62.

[0023] The working principle of this specific implementation method is as follows: After the external robotic arm places the assembled lithium battery cell into the test fixture, the cylinder pushes the push rod to clamp the battery, the probe is connected to the battery terminal, and the data is transmitted to the testing and analysis equipment through the probe to complete the test.

[0024] In this specific embodiment, reinforcing plates are installed on both sides of the support plate, enhancing the stability of the overall structure. This allows the plate to withstand the force generated by the cylinder's push, ensuring stable performance of the fixture during long-term use and reducing detection errors caused by structural loosening. It can be integrated into automated production lines and, in conjunction with external robotic arms, can quickly complete the battery placement, clamping, and testing processes, avoiding the tedious manual insertion and removal of test probes. This significantly improves the efficiency of lithium battery performance testing and meets the needs of large-scale production. The cylinder pushes the push rod to clamp the battery, ensuring a reliable connection between the probe and the battery terminals, effectively avoiding poor contact problems and ensuring stable and accurate test data, providing a reliable basis for selecting cells with good consistency. As part of an automated production line, it is easy to integrate with other testing and analysis equipment, allowing for the further development of intelligent identification and rejection functions for defective products, timely detection of manufacturing defects, improved quality control in lithium battery production, and reduction of subsequent battery performance degradation and safety hazards. The bottom ends of the tray are connected to the probe mounting plate via crossed push rods. This structural design makes the tray's movement smoother when pushed by the cylinder, better achieving the clamping action of the battery and ensuring good contact between the probe and the battery terminals. The system can be adjusted according to different specifications of lithium batteries, such as changing push rods of different lengths, adjusting the position of the tray and probe mounting plate, etc., to meet the testing needs of lithium batteries of different sizes and terminal positions.

[0025] 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 lithium battery online testing fixture, characterized in that, The system includes a base plate (1), a support plate (2), a support plate reinforcing plate (3), a support plate (4), a probe mounting plate (5), a push rod (6), a cylinder (7), and a probe (8). The cylinder (7) is located on one side of the base plate (1). The support plate (2) connected to the end of the base plate (1) is located on the outside of the cylinder (7). The support plate reinforcing plate (3) is located on both sides of the support plate (2). The cylinder rod of the cylinder (7) is connected to the support plate (4). The bottom ends of the support plate (4) are connected to the two ends of the probe mounting plate (5) through the cross push rod (6). The probe mounting plate (5) is located at the other end of the base plate (1). The probe (8) is located on the probe mounting plate (5).

2. The lithium battery online testing fixture according to claim 1, characterized in that, The probe (8) is connected to the terminal of the battery being tested.

3. The lithium battery online testing fixture according to claim 1, characterized in that, The push rods (6) are connected at their intersections via a pivot (61), and the ends of the push rods (6) are connected to a hinge (62).

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