Battery pole piece forming apparatus and forming method

A battery pole piece forming method, the method being applied to a battery pole piece forming apparatus, wherein the apparatus comprises a conveying mechanism configured to convey a substrate;

• a feeding mechanism;
• and a press roller mechanism, wherein the press roller mechanism comprises a first press roller, a second press roller, a third press roller, and a fourth press roller arranged side by side in sequence;
• a spacing between the first press roller and the second press roller is the same as a spacing between the third press roller and the fourth press roller;
• the second press roller and the third press roller are configured to make the substrate pass between the second press roller and the third press roller along a vertical direction;
• the first press roller and the second press roller are configured to roll-press active substance particles conveyed by the feeding mechanism to form a first membrane;
• the third press roller and the fourth press roller are configured to roll-press active substance particles conveyed by the feeding mechanism to form a second membrane;
• and the second press roller and the third press roller are configured to roll-press the first membrane and the second membrane onto one side of the substrate and another side of the substrate respectively, wherein the apparatus further comprises a first driving mechanism and a first mounting assembly, the first press roller and the second press roller are mounted on the first mounting assembly, and the first driving mechanism is configured to drive at least one of the first press roller or the second press roller to make the first press roller and the second press roller move towards or away from each other;
• and
• the method comprises:
• roll-pressing the active substance particles to form the first membrane and the second membrane that have a same thickness;
• and
• roll-pressing the first membrane and the second membrane onto the one side of the substrate and the another side of the substrate respectively.