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Power Battery: the Application of AGV and AMR in the Front Process of the Power Battery Industry

The global power battery is starting a new round of capacity expansion, accelerating the development of power battery manufacturing towards large-scale, automated, and intelligent trends. In addition to the automation of production lines, the application of AGV in the logistics system has also become a symbol of a modern smart factory for power batteries. one of the sexual configurations.

The connection between power battery manufacturing processes is becoming more and more flexible, and the connection between production line and warehousing is becoming more and more close, especially the connection of equipment, network connection, data connection, etc., as an important carrier for seamless connection between processes, power Battery companies have also put forward higher requirements for AGV systems.

This article mainly briefly introduces the problems in the specific application of AGV/AMR in the front-end process of power battery production and the intelligent logistics solution of the front-end process.

Introduction to the front-end process of the power battery

Agv System

The front part of the cell mainly involves the production of electrodes, including four major links: stirring, coating, rolling, and slitting.

The previous process mainly includes slurry stirring, positive and negative electrode coating, rolling, slitting, pole piece making and die cutting.

In the entire power battery production, the front-end process is very important, accounting for more than 40% of the entire production process. In the power battery production with a high degree of automation, the front-end process of the unpacking, handling, coil change and line-side transfer China will highlight the flexible and efficient value of AGV/AMR.

Ⅰ. Difficulties of AGV intelligence in the front-end process of power battery

The connection between power battery manufacturing processes is becoming more and more flexible, and the connection between production lines is becoming more and more closely. The AGV/AMR equipment to perfectly match the front-end production line also needs to overcome the following difficulties:

Agv System

1. High requirements for process docking accuracy

The biggest difficulty in the automatic loading and unloading of the coating, rolling, and slitting machines in the front process is that the docking accuracy is high, and it is difficult to achieve only by the positioning accuracy/ docking accuracy of the car body itself. Generally, machine vision is used to assist positioning. Improve accuracy.

2. High frequency of pole roll conveying

The production line has a tight production rhythm, and the transportation frequency of raw materials and pole rolls is high, which puts forward high requirements for the transportation speed, accuracy and overall deployment of logistics equipment.

3. The workshop space is small

Due to the consideration of site utilization and equipment connection, the space of the operation area is relatively narrow and the passage is narrow; the application of smart logistics equipment needs to consider the equipment spacing and the width of the logistics passage to optimize the space utilization.

4. Mixed flow of people and vehicles in the workshop

The highly automated power battery production workshop has not yet fully realized unmanned production, and the mixed flow of people and vehicles is also the focus of consideration. While planning the AGV/AMR operation path reasonably, the equipment needs to have a safety protection mechanism to deal with the on-site mixed flow of people and vehicles. safety and congestion risks.

5. High requirements for cleanliness of the working environment

For example, it is necessary to strictly ensure that no particles, sundries, dust, etc. are mixed into the pole piece during the coating process. If the sundries are mixed, it will cause a micro-short circuit inside the battery, and in severe cases, the battery will catch fire and explode.

Ⅱ. Front-end process AGV smart logistics solution

1. CASUN intelligent AGV/AMR intelligent solution product series

1 ) Latent lift AGV/AMR

2 ) Backpack AGV/AMR

3 ) Intelligent forklift AGV/AMR

4 ) AGV intelligent control system

CASUN Intelligent has complete and advanced two-dimensional code, magnetic stripe, laser, SLAM, and visual navigation technology, which can accurately navigate in complex environments; AGV/AMR series hardware products can meet the requirements of one-way, two-way, and omnidirectional operation, and can be autonomous Complete lifting, transportation, and unloading scene operations, and at the same time, it has complex operations such as attachment and detachment, and runs efficiently and accurately under the scheduling of the intelligent control system.

2. CASUN Intelligent solution innovation

① Autonomous intelligent control system to achieve precise docking at the system level;

The self-developed AGV intelligent control system is perfectly connected with the MES system and the WMS system, automatically generates material transfer tasks, and automatically transports materials into the system to distribute materials; and through rational planning of AGV/AMR operation paths, comprehensively improve AGV/AMR operation efficiency;

② Dual -wheel differential structure, more flexible in narrow roads;

The AGV/AMR series products designed for the on-site environment of narrow aisles use a two-wheel differential drive structure to achieve more flexible operation in narrow aisles, and can realize in-situ rotation and U-turn operation, improve the efficiency of site space use, and save costs for enterprises;

③ Electric lift, no pollution to the environment;

The lifting series AGV/AMR products can adopt the electric lifting method. Compared with the transmission hydraulic lifting, the electric lifting has no pollution to the site environment, and has low noise, which meets the strict environmental cleanliness requirements of the front-end production of power batteries;

④ Using multi-threaded lidar, high safety and more accurate navigation;

Multi-line LiDAR is used in the navigation mode to achieve:

High security, compared to the traditional single-line laser radar, which can only scan in a plane and cannot measure the height of the object, the multi-threaded laser radar can perform 3D modeling of the surrounding environment of the AGV through scanning, and use the AI algorithm to compare the difference between the data before and after in real time, and identify the surrounding environment. People or objects, improve the safety of AGV during operation;

High stability, multi-line lidar can also achieve synchronous modeling and enhance navigation stability;

Strong adaptability, multi-line lidar technology makes AGV more adaptable to the environment, thanks to the real-time update of the environment map, its autonomous navigation is less affected by the surrounding environment, and is more autonomous, flexible and stable;

⑤ Visual aided navigation and deviation correction to achieve higher accuracy;

With laser SLAM navigation as the main, visual aided navigation method, the positioning accuracy is as high as ± 5mm, which can further solve the problem of high frequency of pole roll conveying and accurate docking of material racks. barrier algorithm, saving transportation efficiency.

In the application scenario of AGV/AMR in the power battery production line, enterprises pay more attention to the accuracy of AGV/AMR positioning, the coordination with the overall production rhythm, the stability of the scheduling system and the accuracy of data collection. A single customer in the industry has implemented more than 2,000 AGV/AMR units, and the coordination, cluster stability, and accuracy have been fully recognized by industry customers.

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