Two devices are offered to leading NEV makers to produce blade batteries: a dual-layer coating device with a width of 1.3m and speed of 100m/min, and a rolling-partitioning device with a width of 1.4m and speed of 120m/min. The coating device can process a width of 1.4m, and its maximum speed is 120m/min. One coating device has as many as 240 technical parameter detection points, and 70% of technical parameters have realized the loop closure detection. Thanks to its carrying capacity of 6.5T, the super-large roll of the device can reduce the total number of joints and scrap rate of the whole line. The roller press can work with an accuracy of ±1.5μm.