Abstract: A system for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.

Abstract: A system and methods for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.

Abstract: The present disclosure relates to rollers such as nip rollers and calendering rollers with a coating and a method of applying the coating. More specifically, the present disclosure relates to a nip roller or a calender roller with a hardening layer applied to the surface to prevent damage from contaminants.

Abstract: The invention relates to a sleeve-change calender (1) for the rotary embossing of a multi-ply tissue web or for producing a ply bond between the individual plies of the multi-ply tissue web, wherein the sleeve-change calender comprises a roll frame (7) with at least one roll (12, 13) mounted therein, with an expandable support core (3) and a exchangeable sleeve (4) mounted thereon, wherein the sleeve can be pushed onto the support core for assembly and can be fixed thereon with a friction fit, wherein the support core is designed with a multi-chamber system (11) for the individual application of pressure on separate pressure zones (10).

Abstract: The invention relates to a powder hopper (101) for the gravity-driven feeding of powdered electrode precursor material (102) into a nip of a dry electrode calendar (2), said powder hopper comprising: a powder feed opening (105) for feeding powdered electrode precursor material (102) into the powder hopper; and a powder outlet opening (106) for metering the powdered electrode precursor material from the powder hopper into a nip, the cross-section of the powder hopper tapering between the powder feed opening and the powder outlet opening, and the powder hopper having a level detection means (103) for detecting the powder level of the powder hopper. The invention also relates to: a corresponding assembly consisting of a powder hopper and a first and a second roller that form a nip; and a method for operating a powder hopper.

Abstract: Methods and systems for electrically heating and cooling rollers is described. A system may include one or more rollers comprising one or more electrical heating elements and one or more air channels. The one or more electrical heating elements may integrated to a power source and control circuit through an electrical contact on at least one end of the roller. The control circuit may additionally receive input from one or more temperature sensors.

Abstract: Systems and methods of providing powder are disclosed. A system includes a powder hopper, one or more sensors, a feeder hopper and a processor in operable communication with the one or more sensors and the feeder hopper. The powder hopper is configured to provide a powder to a pair of rollers. Each of the one or more sensors is configured to determine a characteristic of the powder in the powder hopper. The feeder hopper is configured to provide the powder to the powder hopper. The processor is configured to cause the feeder hopper to provide the powder to the powder hopper in response to the characteristic of the powder in the powder hopper being less than a threshold.

Abstract: The invention relates to a roller (1) for use in a dry coating process to produce electrodes, comprising: a roller core (3) consisting of a core material; a roller shell (4) consisting of a shell material, the roller shell surrounding the roller core at least in sections; the shell material having a greater hardness than the core material; and the roller core including a device for tempering the roller shell.

Abstract: The invention relates to an assembly for contactlessly measuring the thickness of a continuous material web, in particular a flexible, elastic, and/or coated material web, having: a material web which is guided on the surface of a contact body, in particular a contact body which is cylindrical at least in some sections; and a sensor assembly for measuring the thickness of the material web, wherein at least one first sensor is oriented toward an upper face of the material web and at least one second sensor, lying opposite the first sensor, is oriented toward a lower face of the material web. The invention is characterized in that the second sensor is at least partially arranged below the contact region between the material web and the contact body.

Abstract: A system and methods for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.

Abstract: A system and methods for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.

Abstract: A system and methods for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.

Abstract: Systems, methods, and products are described relating to a set of calendering rollers positioned adjacent to a set of embossing rollers or cutting rollers or combination rollers but without a heating unit disposed between them. Produced embossed or cut graphite-based webs having bipolar plate structures can be made with reduced cost and improved quality.

Abstract: Disclosed are apparatuses and methods for forming films having uniform thicknesses across the entire width of the film. The films are also disclosed. The apparatus for forming the film includes a first nip roller and a second nip roller, each of the first nip roller and the second nip roller being configured to compress the powder as it passes between the first nip roller and the second nip roller and thereby form the film, whereby in the absence of a force counteracting the pressure of the passage of the powder between the first nip roller and the second nip roller the first nip roller is deflected to a greater degree than the second nip roller. Furthermore, the first nip roller and the second nip roller are each associated with one or more eccentric bearings that rotate to apply force vectors to the first nip roller and the second nip roller.

Abstract: A device for producing a releasable clearance-free position of a rolling bearing, having a rolling bearing which has an outer ring, an inner ring mounted on a shaft and a plurality of rolling elements arranged between the inner ring and the outer ring, and having a tensioning device mounted on the circumference of the rolling bearing outer ring for generating a radial preload which is uniform over the outer circumference of the rolling bearing outer ring between the tensioning device and the rolling bearing outer ring, wherein the tensioning device has an axially adjustable tensioning element which can be brought into a first alignment in which the rolling bearing has play, and which can be brought into a second alignment in which the rolling bearing is free of play. A corresponding method is also described.

Abstract: A roller arrangement includes at least three parallel-axis rollers with a respective nip formed between adjacent rollers. Each of the rollers having a journal at both axial ends and is pivot-mounted via the respective roller journals. At least two bearings being arranged axially adjacent to one another at least on both of a first roller journal of a first, second and third adjacent rollers. A compressive stress is generated between an inner bearing on the first roller journal of the first roller and an outer bearing on the first roller journal of the second roller and a tensile stress is generated between an outer bearing on the first roller journal of the first roller and an inner bearing on the first roller journal of the second roller or vice versa. Similarly, compressive and tensile stresses are generated between the bearings on respective journals of the second and third adjacent rollers.

Abstract: Systems and methods of providing powder are disclosed. A system includes a powder hopper, one or more sensors, a feeder hopper and a processor in operable communication with the one or more sensors and the feeder hopper. The powder hopper is configured to provide a powder to a pair of rollers. Each of the one or more sensors is configured to determine a characteristic of the powder in the powder hopper. The feeder hopper is configured to provide the powder to the powder hopper. The processor is configured to cause the feeder hopper to provide the powder to the powder hopper in response to the characteristic of the powder in the powder hopper being less than a threshold.

Abstract: Methods and systems for electrically heating and cooling rollers is described. A system may include one or more rollers comprising one or more electrical heating elements and one or more air channels. The one or more electrical heating elements may integrated to a power source and control circuit through an electrical contact on at least one end of the roller. The control circuit may additionally receive input from one or more temperature sensors.

Abstract: Disclosed are apparatuses and methods for forming films having uniform thicknesses across the entire width of the film. The films are also disclosed. The apparatus for forming the film includes a first nip roller and a second nip roller, each of the first nip roller and the second nip roller being configured to compress the powder as it passes between the first nip roller and the second nip roller and thereby form the film, whereby in the absence of a force counteracting the pressure of the passage of the powder between the first nip roller and the second nip roller the first nip roller is deflected to a greater degree than the second nip roller. Furthermore, the first nip roller and the second nip roller are each associated with one or more eccentric bearings that rotate to apply force vectors to the first nip roller and the second nip roller.

Abstract: The present disclosure relates to rollers such as nip rollers and calendering rollers with a coating and a method of applying the coating. More specifically, the present disclosure relates to a nip roller or a calender roller with a hardening layer applied to the surface to prevent damage from contaminants.