Double-layer high-speed coating machine, one of the largest and heaviest equipment in each process of lithium battery

In three years, Xinjiatuo developed the world's first high-speed double-sided coating machine adapted to 6um copper foil. The coating production speed exceeds 80m/min and the width is 1000mm, especially the coating on 6μm copper foil. The problem of cloth, this is a major breakthrough case of domestic coating machine beyond imported equipment.

As the champion of global power battery sales in 2017, it is leading China's lithium battery industry to break through Japan and South Korea, and has emerged as a global industry leader. With the broadcast of the CCTV documentary "Great Powers", China's largest power battery production base, the power battery production line made of 6 micron copper foil also made its debut.

Among them, the double-sided high-speed 6-micron coating technology has attracted great attention. In three years, Xinjiatuo developed the world's first high-speed double-sided coating machine adapted to 6um copper foil. The coating production speed exceeds 80m/min and the width is 1000mm, especially the coating on 6μm copper foil. The problem of cloth, this is a major breakthrough case of domestic coating machine beyond imported equipment. In the actual production, it has been recognized and praised by users. It symbolizes the beginning of the comprehensive replacement of imports by Xinjiatuo coating machine and has attracted market attention.

Talking about the "double-layer wide-format high-speed coating machine", Xiaodong Qi, the general manager of Xinjiatuo, confidently stated that the Xinjiatuo coating machine is parallel to the roller, the uniformity of the wind speed of the oven, the stability of the tension and the accuracy of the overall installation. And so on all the performance and capabilities, can already compete with the Japanese counterparts, and even led the world in some parameters, truly realized the "made in China" of the high-end core equipment of the power battery.

As a "business card" for domestic high-end coating machines, since its establishment 12 years ago, Xinjiatuo has always been positioned as a technology-driven enterprise, and is the best choice for lithium battery equipment import substitution. Xinjiatuo also introduced a series of black technologies on its core product, “Double-layer wide-format high-speed coater”.

1,Realize 6um copper foil

Application in double-layer wide-format high-speed coater

The double-layer high-speed coating machine is one of the largest and heaviest equipment in the process of lithium battery. It has a length of about 80 meters, a width of 8 meters, a height of 7 meters and a weight of 200 tons. Whether it is the overall rigidity and strength of the equipment, it is still controlled. The installation accuracy of the equipment at the production site is very critical. Any deviation of the wire will cause the copper foil to break, which is comparable to the core components of the rocket.

If the control is not good in the early stage, it will affect the accuracy of the equipment when the equipment is used continuously, and it will cause some unstable factors. Among them, the parallel level of the roller and the uniformity of the air velocity of the oven are the key points to realize the production of 6um copper foil. Xinjiatuo has established a professional engineering team with many years of precipitation, through the design scheme, processing precision, installation precision and debugging experience. Strict control, while ensuring the accuracy of design and installation, it also realizes one installation in place.

2,Solve manual detection alignment

CCD detection and closed loop adjustment

(Size detection and closed-loop control of front and back alignment)

Power battery in the positive and negative plate edge closed loop alignment when the requirements are very high, how to ensure that the coating process and coating, can be real-time adjustment, real-time detection. Xinjiatou USES CCD high-speed camera to detect each important size, real-time detection and comparison calculation, and sends the data to the computer for storage, while analyzing the data to determine whether it needs to be adjusted, so as to ensure the fluctuation within a small range of the required value.

3,Large automatic retractable winding diameter

Realize automatic loading and unloading of AGV docking

When the coating width is 1000mm and the coating speed reaches 80m/min, the automatic rewinding and winding diameter of the Xinjiatuo double-layer wide-speed high-speed coating machine can reach 1.2m, and it can automatically connect and unload with the AGV, and cancel the manual operation. Can greatly improve production efficiency and reduce the number of downtime. Xinjiatuo has achieved automatic docking of AGV loading and unloading through close cooperation with customers. In China, only Xinjiatuo is the first to implement and apply.

4,Solve multi-stage high precision double closed loop tension control

The double-layer high-speed coater is designed with six-stage tension. Each tension has a unique meaning. The difficulty is also twice the number of the three-stage tension of the single layer. The double closed loop of speed and tension is high-speed coating. Strong protection. Xinjiatuo achieves microsecond response by using high-speed PLC with state network communication, and with reasonable optimization of software programs, the products at high speed are still stationary, thus achieving tension stability.

In the past few years, along with the rapid development of the domestic power battery industry, it has also promoted the rapid growth of domestic equipment. As a core subsidiary of Shanghai Putailai Group, Xinjiatuo provides intelligent and efficient solutions for power battery production. In the future international competition of new energy industry, Xinjiatuo creates and leads the comprehensive import substitution of high-end core equipment such as coating machine. Realize the "China Core" for the manufacture of new energy industries. High-speed, precision, energy-saving, localized services, and joint research and development of core process technologies will be the core advantages of Xinjiatuo and foreign competition, providing customers with unique competitiveness.

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