A battery cell module air tightness rapid detection device

Abstract

The utility model discloses a kind of battery module airtightness rapid detection device, including base, loading conveyor belt, unloading conveyor belt and defective product conveyor belt are installed at the edge of base;Rack, it is installed at the edge of base;Actuator, it is set on rack for driving detection assembly to slide up and down relative to rack;Detection assembly, for detecting battery module airtightness;Test tool, it is set in the middle of base.The utility model provides a kind of battery module airtightness rapid detection device, by the combination of loading, detection, unloading conveyor belt and carousel test tool, full-automatic detection streamline is constructed, realizes the unmanned operation from loading to sorting, reduces artificial cost and human error, carousel multi-station parallel operation, detection time and auxiliary time (loading and unloading) coincide, effectively shorten production rhythm, "rough adjustment+fine adjustment" two-stage drive compression mechanism, provide reliable guarantee for the accuracy of airtightness detection.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and in particular to a rapid detection device for the airtightness of battery modules. Background Technology

[0002] As a core component of electric vehicles and energy storage systems, the safety and reliability of lithium-ion battery modules are of paramount importance. The battery module casing must possess excellent airtightness to prevent the intrusion of external impurities such as moisture and dust, avoiding serious safety incidents such as internal short circuits and electrolyte leakage. Therefore, conducting 100% airtightness testing on battery modules is an essential step in the manufacturing process.

[0003] Currently, existing battery module airtightness testing devices generally have the following problems: Low level of automation: Many devices still require manual placement, alignment and clamping of modules, which is cumbersome, labor-intensive and prone to human error.

[0004] Insufficient flexibility: The equipment structure is fixed, and when it is necessary to replace different models of battery modules, the debugging and changeover time is long, making it difficult to adapt to the flexible production mode of multiple varieties and small batches.

[0005] Therefore, there is an urgent need to develop a rapid testing device for the airtightness of battery modules that can achieve accurate, automated, and highly consistent performance. Utility Model Content

[0006] Therefore, it is necessary to provide a rapid testing device for the airtightness of battery modules to address the aforementioned technical problems, thereby achieving accurate, automated, and highly consistent battery module testing.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rapid testing device for the airtightness of a battery module includes a base, and a feeding conveyor belt, a discharging conveyor belt and a defective product conveyor belt are installed at the edge of the base. The frame is installed at the edge of the base, forming a rectangular array with the feeding conveyor belt, the unloading conveyor belt, and the defective product conveyor belt; An actuator, which is mounted on the frame, is used to drive the detection assembly to slide up and down relative to the frame; The detection assembly includes a sealing head fixedly installed at the output end of the actuator, a piston slidably inserted into the inner wall of the sealing head, and a piston rod fixedly installed in the middle of the piston. One end of the piston rod, which passes through the sealing head, is fixedly connected to a power source. The test fixture is located in the middle of the base, and the test fixture includes at least two test stations.

[0008] Furthermore, the actuator includes an electric push rod disposed on the side wall of the frame and a slide fixedly mounted on the output end of the electric push rod. The slide and the frame are slidably engaged by a slide rail and a slider.

[0009] Furthermore, the power source is an electric push rod II, which is fixedly installed on the side wall of the slide table, and the sealing pressure head is fixedly connected to the slide table.

[0010] Furthermore, the sealing head is a hollow piston tube, and a sealing ring is snapped into the bottom of the sealing head. When the sealing head comes into contact with the battery module, the sealing ring is compressed to form a sealed state inside the sealing head.

[0011] Furthermore, the test fixture includes a turntable rotatably connected to the middle of the base and a drive assembly installed at the bottom of the base for driving the turntable to rotate.

[0012] Furthermore, the drive assembly includes a servo motor fixedly connected to the base, and the output end of the servo motor is connected to a transmission pulley set. The servo motor is driven by the rotation shaft of the turntable through the transmission pulley set.

[0013] Furthermore, the testing station includes a pneumatic push rod 1 located at the bottom, the output end of which is fixedly connected to a battery rack, and the inner sidewall of the battery rack has a groove adapted to the battery module.

[0014] Furthermore, the test station also includes a pneumatic push rod II set at the top. The moving end of the pneumatic push rod II is connected to a calibration frame. The side wall of the calibration frame is detachably connected to an inclined calibration arm. The calibration frame and the battery rack are slidably engaged with the test station via slide rails and sliders, respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a rapid testing device for the airtightness of battery modules. High degree of automation and integration: By combining the feeding, inspection and unloading conveyor belts with the rotary testing fixtures, a fully automated inspection flow line is constructed, realizing unmanned operation from feeding to sorting, which greatly reduces labor costs and human error.

[0016] Significantly improved testing efficiency: The rotary multi-station parallel operation overlaps the testing time with the auxiliary time (loading and unloading), effectively shortening the production cycle and meeting the high-efficiency requirements of modern production lines.

[0017] High accuracy and consistency in testing: The unique two-stage drive clamping mechanism of "coarse adjustment + fine adjustment" combined with the automatic calibration system ensures that the position and force of each clamping are highly consistent, providing a reliable guarantee for the accuracy of airtightness testing.

[0018] High flexibility and adaptability: The modular battery rack, detachable calibration arm, and sealing head enable the equipment to quickly adapt to different models and sizes of battery modules, resulting in a high degree of flexibility. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the rapid airtightness testing device for battery modules provided by this utility model; Figure 2 A schematic diagram of the actuator structure of the rapid airtightness testing device for battery modules provided by this utility model; Figure 3 A schematic diagram of the test fixture structure for the rapid airtightness testing device for battery modules provided by this utility model; Figure 4 A side view of the test fixture structure of the rapid airtightness testing device for battery modules provided by this utility model; Figure 5 A schematic diagram of the disassembly structure of the test fixture for the rapid airtightness testing device for battery modules provided by this utility model.

[0020] The markings in the diagram are explained as follows: 1. Base; 11. Loading conveyor belt; 12. Unloading conveyor belt; 13. Defective product conveyor belt; 2. Rack; 3. Actuating element; 31. Electric linear actuator; 32. Slide table; 4. Detection components; 41. Sealing head; 42. Piston rod; 43. Power source; 5. Test fixture; 51. Turntable; 52. Servo motor; 53. Pneumatic push rod one; 54. Battery rack; 55. Pneumatic push rod two; 56. Calibration rack; 57. Inclined calibration arm. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] Example 1

[0023] Please refer to Figure 1-5 A rapid testing device for the airtightness of a battery module includes a base 1, and a feeding conveyor belt 11, a discharging conveyor belt 12 and a defective product conveyor belt 13 are installed at the edge of the base 1. The frame 2 is installed at the edge of the base 1 and forms a rectangular array with the feeding conveyor belt 11, the unloading conveyor belt 12 and the defective product conveyor belt 13; Actuating element 3, which is mounted on frame 2, is used to drive the detection assembly 4 to slide up and down relative to frame 2; The detection component 4 includes a sealing head 41 fixedly installed at the output end of the actuator 3, a piston slidably inserted into the inner wall of the sealing head 41, and a piston rod 42 fixedly installed in the middle of the piston. One end of the piston rod 42 that passes through the sealing head 41 is fixedly connected to the power source 43. Test fixture 5 is set in the middle of base 1, and test fixture 5 includes at least two test stations.

[0024] Example 2

[0025] The rapid airtightness testing device for battery modules provided in Embodiment 1 is further optimized. Specifically, the actuator 3 includes an electric push rod 31 disposed on the side wall of the frame 2 and a slide 32 fixedly installed at the output end of the electric push rod 31. The slide 32 and the frame 2 are slidably connected through a slide rail and a slider. The power source 43 is an electric push rod 2, which is fixedly installed on the side wall of the slide 32. The sealing head 41 is fixedly connected to the slide 32.

[0026] Specifically, the electric push rod 31 drives the entire detection assembly 4 to move up and down rapidly and over a wide range. When detection is required, the electric push rod 31 extends, causing the slide table 32 and the detection assembly 4 on it to quickly descend to a preparatory position close to the battery module. After detection, the electric push rod 31 retracts, quickly raising the detection assembly 4 to make room for the turntable to rotate. The advantage of this design is that it separates the rapid approach for coarse adjustment from the precise clamping for fine adjustment, significantly reducing the ineffective movement time of the detection assembly and thus improving the overall detection efficiency.

[0027] Once the detection component 4 reaches the preparatory position driven by the electric push rod 31, the electric push rod 2 is activated, pushing the piston rod 42 and the piston downwards. If the battery module is well-sealed, the piston will not move downwards; conversely, if the battery module is poorly sealed, the piston will move downwards smoothly. This achieves the effect of detecting the sealing status of the battery module. The electric push rod 2 can precisely control the output thrust and displacement, ensuring that the sealing force applied each time is constant and controllable, avoiding damage to the module due to excessive pressure.

[0028] Example 3

[0029] The rapid airtightness testing device for battery modules provided in Embodiment 1 or 2 is further optimized. The sealing head 41 is a hollow piston tube, and a sealing ring is snapped into the bottom of the sealing head 41. When the sealing head 41 comes into contact with the battery module, the sealing ring is compressed to form a sealed state inside the sealing head 41.

[0030] Under the action of the electric push rod 2, the sealing ring at the bottom of the sealing head 41 is evenly compressed onto the test interface of the battery module, forming a temporary, sealed test chamber. Subsequent airtightness tests, such as inflation, pressure holding, and testing, are all performed within this sealed space. The advantages of this design are its simple structure, reliable sealing, and adaptability to different battery module models by replacing different specifications of sealing rings and pressure heads, making it highly versatile.

[0031] Example 4

[0032] The rapid airtightness testing device for battery modules provided in Embodiment 3 is further optimized. The test fixture 5 includes a turntable 51 rotatably connected to the middle of the base 1 and a drive assembly installed at the bottom of the base 1 to drive the turntable 51 to rotate.

[0033] The drive assembly includes a servo motor 52 fixedly connected to the base 1. The output end of the servo motor 52 is connected to a transmission pulley set, and the servo motor 52 is driven by the rotation shaft of the turntable 51 through the transmission pulley set.

[0034] The test station includes a pneumatic push rod 53 located at the bottom. The output end of the pneumatic push rod 53 is fixedly connected to a battery rack 54. The inner side wall of the battery rack 54 has a groove that is compatible with the battery module.

[0035] The test station also includes a pneumatic push rod 55 set at the top. The moving end of the pneumatic push rod 55 is connected to a calibration frame 56. The side wall of the calibration frame 56 is detachably connected to an inclined calibration arm 57. The calibration frame 56 and the battery rack 54 slide in cooperation with the test station through a slide rail and a slider, respectively.

[0036] The turntable 51 has multiple stations, enabling parallel operations of "loading-inspection-unloading". For example, while one station is inspecting, the operator can load materials at another station, and the station that has completed inspection will rotate to the unloading area. The drive assembly drives the turntable 51 to rotate intermittently, sequentially sending each station to the inspection position. The advantage of this design is that it overlaps the inspection time with the loading and unloading time, greatly shortening the production cycle and achieving truly continuous and efficient inspection. The PLC control system controls the servo motor 52 to rotate precisely by a fixed angle each time; for example, the four-station turntable rotates 90 degrees each time. The servo motor has high positioning accuracy and fast response speed, ensuring the accuracy and stability of the turntable 51's rotation.

[0037] During loading and unloading, pneumatic push rod 53 extends, pushing battery rack 54 onto the loading conveyor belt 11, unloading conveyor belt 12, and defective product conveyor belt 13 for loading and unloading, aligning it with the sealing head 41. Further pneumatic push rod 55 pushes calibration rack 56 downwards. During descent, the inclined calibration arms 57 on both sides contact the edges of the battery modules, guiding any potentially misaligned battery modules to the center for precise positioning. After calibration, pneumatic push rod 55 retracts. The inclined calibration arms 57 are detachable for easy replacement according to different module models. The beneficial effect is that this automatic calibration mechanism completely eliminates the positional errors of manual loading, ensuring that the test interface of each battery module is precisely aligned with the sealing head 41. This is a crucial step in ensuring sealing performance and accurate test results, greatly improving the automation level and testing consistency of the equipment.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A rapid testing device for the airtightness of a battery module, characterized in that, It includes: The base (1) is equipped with a feeding conveyor belt (11), a discharging conveyor belt (12) and a defective product conveyor belt (13) at the edge of the base (1). The frame (2) is installed at the edge of the base (1) and forms a rectangular array with the feeding conveyor belt (11), the unloading conveyor belt (12) and the defective product conveyor belt (13); An actuator (3) is mounted on the frame (2) for driving the detection assembly (4) to slide up and down relative to the frame (2); The detection assembly (4) includes a sealing head (41) fixedly installed at the output end of the actuator (3), a piston slidably inserted into the inner wall of the sealing head (41), and a piston rod (42) fixedly installed in the middle of the piston. One end of the piston rod (42) passing through the sealing head (41) is fixedly connected to the power source (43). The test fixture (5) is set in the middle of the base (1), and the test fixture (5) includes at least two test stations.

2. The rapid testing device for the airtightness of battery modules according to claim 1, characterized in that, The actuator (3) includes an electric push rod (31) disposed on the side wall of the frame (2) and a slide (32) fixedly installed at the output end of the electric push rod (31). The slide (32) and the frame (2) are slidably coupled through a slide rail and a slider.

3. The rapid detection device for the airtightness of battery modules according to claim 2, characterized in that, The power source (43) is an electric push rod II. The power source (43) is fixedly installed on the side wall of the slide (32). The sealing head (41) is fixedly connected to the slide (32).

4. The rapid testing device for the airtightness of battery modules according to claim 1, characterized in that, The sealing head (41) is a hollow piston tube. A sealing ring is snapped into the bottom of the sealing head (41). When the sealing head (41) comes into contact with the battery module, the sealing ring is compressed to form a sealed state inside the sealing head (41).

5. The rapid detection device for the airtightness of battery modules according to claim 1, characterized in that, The test fixture (5) includes a turntable (51) rotatably connected to the middle of the base (1) and a drive assembly installed at the bottom of the base (1) for driving the turntable (51) to rotate.

6. The rapid detection device for the airtightness of battery modules according to claim 5, characterized in that, The drive assembly includes a servo motor (52) fixedly connected to the base (1). The output end of the servo motor (52) is connected to a transmission pulley set. The servo motor (52) is driven by the rotation shaft of the turntable (51) through the transmission pulley set.

7. The rapid testing device for the airtightness of battery modules according to claim 1, characterized in that, The test station includes a pneumatic push rod (53) at the bottom, and a battery rack (54) is fixedly connected to the output end of the pneumatic push rod (53). The inner wall of the battery rack (54) has a groove that is adapted to the battery module.

8. The rapid testing device for the airtightness of battery modules according to claim 7, characterized in that, The test station also includes a pneumatic push rod 2 (55) set at the top. The moving end of the pneumatic push rod 2 (55) is connected to a calibration frame (56). The side wall of the calibration frame (56) is detachably connected to an inclined calibration arm (57). The calibration frame (56) and the battery rack (54) slide and cooperate with the test station through a slide rail and a slider, respectively.

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