What are the processing techniques for the module section of the module pack production line?

The processing technology of the module section of the module pack production line mainly includes module extrusion sleeve steel strips, module pole photography, module pole cleaning, and module laser welding. The following is a detailed introduction to these processes:

Module extrusion sleeve steel strip:

Function description: The main function of this process is to extrude the battery module and use steel straps to tightly fix the module and the end plate to ensure the stability and safety of the module.

Operation steps:

Place the battery module and end plates on the extruder.

Start the extruder and extrude the module and end plate together to a certain distance.

Put on the steel strap, making sure it is tight and firmly fixed on the module and end plate.

The extruder is reset and the steel strip lining operation is completed.

Process effect: Through the extrusion operation, the tight connection between the battery module and the end plate can be ensured, improving the structural stability of the product; the use of steel straps for fixation further enhances the firmness of the module and prevents it from being damaged during transportation or use. loose or damaged.

Module pole photo:

Function description: This process uses high-definition cameras and image processing technology to accurately detect and evaluate the poles in the module.

Operation steps:

Equipment calibration: Ensure that equipment such as high-definition cameras, light sources, and image processing systems have been calibrated and are in optimal working condition.

Environmental control: Adjust the light intensity and uniformity of the photo-taking area, and maintain the cleanliness of the photo-taking environment to reduce the impact of external factors on the shooting effect.

Program setting: According to the design requirements and detection standards of the module PACK, the relevant parameters and detection algorithms for pole photography are preset in the image processing system.

Automatic loading and positioning: The module to be inspected is automatically transported to the photographing station through a robotic arm or conveyor belt, and a positioning device is used to fix the module on the photographing platform to ensure that the pole is in the best photographing position.

High-definition shooting: Start the high-definition camera, take multi-angle or continuous shots of the pole, and capture detailed image information of the pole.

Image transmission and processing: Transmit the captured pole image to the image processing system in real time for processing, and automatically identify the location, polarity, size, surface state and other characteristics of the pole.

Defect detection and result determination: By comparing the actual image of the pole with the preset standard image, the pole is detected for scratches, pits, misalignment and other defects, and based on the analysis results of the image processing system, it is automatically determined whether the pole is qualified.

Process effect: Automatic photography and image processing technology greatly improves the detection speed and accuracy, reducing the subjectivity and error of manual detection; promptly discovers and eliminates potential quality problems to ensure the overall quality and performance stability of the module PACK; details The data recording and traceability mechanism provides strong support for the enterprise's data management and quality traceability.

Module pole cleaning:

Process description: The pole is a key component connecting the battery core and the external circuit. The cleanliness of its surface has a crucial impact on the welding quality and overall performance. Laser cleaning technology has gradually become the preferred method for pole cleaning in battery module manufacturing due to its high efficiency, environmental protection, accuracy and other advantages.

Technical principle: Laser cleaning technology is a non-contact cleaning method that uses high-energy laser beams to irradiate the surface to be cleaned, so that surface contaminants absorb the laser energy and quickly heat up, vaporize or peel off, thereby achieving the purpose of cleaning.

Process effect: Laser cleaning can effectively remove the oxide layer, oil, dust and other pollutants on the surface of the pole, providing an original and reproducible surface quality, which provides a good foundation for the subsequent welding process and helps to improve the welding strength. , Reduce welding defects, thereby improving the overall performance of the battery module.

Module laser welding:

Function description: Laser welding technology has been widely used in lithium battery module pack production lines due to its high efficiency, accuracy and reliability, and has become an important tool to improve battery pack quality and production efficiency.

Operation steps: Laser welding technology uses laser beams to heat metal materials to the melting point, and realizes the connection of materials by accurately controlling parameters such as the position, power and time of the laser beam.

Application scenarios:

Battery core welding: achieve precise connection between the positive and negative electrodes of the battery core, improve the welding quality and connection strength, and ensure the safety and reliability of the battery core.

Shell packaging: achieve a firm connection between the battery core and the shell, improve the welding strength and sealing, and ensure the safety and stability of the battery during use.

Module and Pack welding: Realize the connection between the cells inside the module and the connection between the module and the Pack shell to ensure the structural integrity and electrical performance of the entire battery pack.

Process advantages:

Efficiency: Laser welding is fast and can significantly improve production efficiency.

Accuracy: The laser beam has a small focusing point, enabling high-precision welding and ensuring weld quality.

Reliability: Laser welding technology can reduce the impact of manual factors on welding quality and improve product consistency and reliability.

To sum up, the processing technology of the module section of the module pack production line involves multiple links, and each link has its own specific process requirements and technical difficulties. By strictly controlling these process steps, we can ensure that the quality of the module meets the standards, laying a solid foundation for the overall performance and safety of the battery pack.