Xinyuren SDC coater and "double carbon" policy

"Carbon peaking" and "carbon neutralization" have become the consensus of the international community. The fourth session of the 13th National People's Congress issued the outline of the 14th five year plan for China's national economic and social development and the long-term goals for 2035. The national energy administration and the Ministry of science and technology jointly prepared the 14th five year plan for scientific and technological innovation in the energy field, which anchored efforts to achieve carbon neutrality by 2060. In the past two years, with the continuous implementation of the "double carbon" policy, the market has changed from policy driven to demand driven, which has promoted the outbreak of China's new energy industry and further stimulated the market demand for lithium batteries and related industrial chains. Battery manufacturers accelerated the expansion of production, driving the growth of demand for lithium battery equipment. Under the "double carbon" policy, lithium batteries and related industrial chains will also face the test and pressure of "carbon reduction". As the key innovative equipment for battery production, single direction double-sided coating machine (SDC) will play a key role for battery enterprises in the "double carbon" road.

Battery production accounts for the main part of carbon emissions in the vehicle life cycle. According to the report of the European transport and Environment Federation (T & E), the carbon emission range of battery production is 61-106kg CO2 / kWh, accounting for more than 60% of the carbon emission of electric vehicles in the whole life cycle. Battery production equipment is the main part of energy consumption. Solving the carbon emission problem of key equipment is the top priority of the "double carbon" road of battery enterprises.

The coating process in the front stage of battery production accounts for about 30-40% of the energy consumption of the production line, which is the "big tiger" of battery production energy consumption. Most of the energy consumption of the coater comes from the baking process of the pole piece. The energy consumption control of the baking part is of great significance for the energy consumption management of the whole battery production. In order to pursue productivity and high speed, the coating equipment for producing power batteries mostly adopts the design of turn back double-layer oven. Work flow of turn back coating: after unwinding the foil, first apply side a, then the pole piece enters the lower oven for baking, then apply side B, then the pole piece climbs into the upper oven for baking, and finally rewind. For SDC coating, after the foil is unwinded, side a and side B are coated at the same time, and the pole pieces are baked in the oven and finally rolled. Compared with the turn back coater, SDC coater directly saves a layer of oven. Under the same production capacity, the comprehensive energy consumption of SDC is saved by more than 30%, which greatly reduces the energy consumption.

Improving battery performance can "add bricks and tiles" to the quality and competitiveness of battery products. SDC coating comes from the same tank through the material source and is supplied at the same time. The drying of side a and side B is consistent. The patented die design of "anti shake + true channel simulation" makes the area density more uniform; The front 1 / 3 box of SDC oven is heated by opening patent, and the high capacity design can also discharge at high rate; The pole piece is not crimped, the surface of the pole piece is free of cracks, and the coating adhesion is better; It can achieve the dryness of pole piece below 500ppm. Above, SDC provides sufficient technical guarantee for battery performance.

SDC provides a worry-saving and labor-saving solution for cost control of manufacturing enterprises. In terms of battery project planning, enterprises can directly reduce procurement costs, production and operation costs, plant infrastructure costs, environmental control costs and labor costs through SDC. After calculation, it is rare that the comprehensive cost will decrease by 30% during the operation life cycle of plant equipment.

The innovative equipment of advantageous technology is a sharp weapon for enterprises to increase benefits, a "catalyst" to accelerate industrial upgrading, and an industrial "driver" of the trend of the "double carbon" era。

SDC coater since 2017, Xinyu people have broken through the technical bottleneck of the industry and obtained a number of invention patents. After years of sneak grinding, they have matured and realized the whole process coating method, and achieved large-scale mass production and comprehensive market application in the past two years.

SDC coater not only has a high degree of automation and intelligent self-learning ability, but also has excellent performance and strong functionality. SDC coating can meet the whole process coating methods such as full width continuous coating, gap coating, stripe coating, zebra coating and Tianzi coating. It is mature and stable with high consistency, and is widely recognized and praised by battery enterprises.

It is reported that many leading domestic lithium battery enterprises have purchased Xinyu people's SDC coating machine. Facing the expanding 3C and energy storage and other industrial markets, Xinyu people have launched SDC coating machines with corresponding specifications and standards to meet the extensive needs of the market. At present, dozens of SDC coaters have been supplied in batches, and more than ten production lines have been used in a single batch.

In the future, with the gradual marketization of SDC, it will become more intelligent, automatic, digital and unmanned. It will fully help battery factories move towards industry 4.0, promote the realization of more and stronger "light off factories" and "zero carbon factories", and take the step of "double carbon"!