Abstract: One or more aspects of the present disclosure relate to methods, systems, and devices related to a system for pre-heating an electrode foil, including a chimney and a heating device. The chimney formed between an inner surface of a heated wall and an inner surface of a passive wall, the chimney having a foil inlet at a first end and a foil outlet at a second end adjacent to a nip of a heated calender roll device. The heating device may be configured to heat the electrode foil and positioned adjacent to an outer surface of the heated wall, where the heating device includes a gas inlet, a heater and a nozzle adjacent to the foil outlet and in fluid communication with the heater, the nozzle including a bend configured to direct a flow of gas to the inner surface of the heated wall and towards the foil inlet.

Abstract: Devices, systems and methods used to accurately and/or precisely calender materials and films (e.g., dry electrode materials and/or dry electrode films), and systems thereof, are described. These devices, systems and methods measure thicknesses of films on the calender rollers and/or adjust bulging of calender rollers. Such disclosures may enable active control and/or adjustment of the calendering system in order to more accurately and/or precisely control and/or adjust the thicknesses, densities and/or loadings of films.

Abstract: Generally described, one or more aspects of the present disclosure relate to systems, methods, and devices for trimming and peeling electrode films. The system can be integrated into a calender rolling system and can create multi-lane films with clean edge quality for lamination. The system can include a trimming device including a cutting device, and a material removing device positioned downstream from the cutting device, the material removing device including a scraper element, a support element positioned upstream from the scraper element, and a vacuum element.

Abstract: A powder dispensing apparatus having an elongate wedge-shaped hopper including one or more fluidized plates is described. The powder dispensing apparatus can be positioned above a pair of calender rolls to distribute a powder, such as a dry electrode material onto the calender rolls. Such fluidized wedge shaped hopper advantageously allows for an accurate and/or controlled rate of powder distribution across or substantially across the length of a calender roll.