Abstract: The invention relates to a calender for producing an electrode film from a powdered electrode precursor material, having at least a first and a second nip roll rotating in the opposite direction to the first, between which a nip is formed, wherein the calender is designed to subject the powdered electrode precursor material to shear forces as it passes through the nip and form an electrode film in this way, characterized in that at least one of the first or second nip rolls has at least one pretensioning device for pretensioning the nip roll against a non-axial, in particular radial and/or tangential force vector generated in the nip by the compression method, acting on the respective nip roll, by means of which the pretensioning direction and/or the magnitude of the pretensioning force can be adjusted. The invention furthermore relates to a method for producing an electrode film having a homogeneous thickness from a powdered electrode precursor material and a corresponding electrode film.

Abstract: The invention refers to systems and methods for controlling the temperature in powder hoppers to regulate the temperature of a dry electrode precursor material are described. For example, a system can include at least one powder hopper, at least one heating element, and at least one calender roller.

Abstract: This invention relates to a multi-roller system comprising at least two rollers forming at least one first gap therebetween configured to be supplied with at least one powder material to produce at least one film material and/or web material by compressing the powder material within the first gap, wherein at least one first low pressure area is provided in at least one supply area for the powder material and the first gap, wherein at least one sealing system is provided to seal the first low pressure area, wherein the sealing system contacts at least one surface of at least one of the rollers, wherein further a first roller is movable relative to a second roller to alter a width of the first gap and/or to alter a distance between the first roller and the second rollers, wherein the sealing system is adjustable to at least two different widths of the first gap and/or two distances of the first roller and the second roller.

Abstract: The invention relates to a screen roller, wherein at least one fluid coating material can be applied to the screen roller from at least one reservoir and the coating material can be transferred from the screen roller to at least one receiving element, wherein the surface of the outer jacket of the screen roller has a plurality of recesses for at least temporarily receiving the coating material, wherein furthermore at least two recesses are fluidically connected by means of at least one connecting channel formed in the surface and/or below the surface and/or the outer jacket, as well as to a printing unit and a method for producing a screen roller.

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 invention relates to a method for coating an electrically conductive film web (210) with an electrically conductive adhesive (1), characterized in that the method comprises providing an electrically conductive film web (210) and coating the film web (210) with an electrically conductive adhesive (1).

Abstract: A method is provided for manufacturing a dry electrode for an energy storage device which is operatively associated with system that 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 invention relates to a temperature-controllable calender roller for manufacturing an electrode track using the dry electrode method; having a roller body and two roller journals extending away from the end face thereof; and having a fluid channel arrangement for temperature control of the roller body, which has a central bore extending axially at least in sections through the roller body and through at least one of the roller journals and a plurality of temperature control channels distributed over the circumference of the roller body, extending below the roller body surface and parallel thereto, which are fluidically coupled to the central bore; and having an inlet line and an outlet line for a thermal fluid, which are connected to the fluid channel arrangement, wherein the inlet line has a feed pipe extending at least in sections into the central bore for introducing the thermal fluid into the fluid channel arrangement, and wherein the outlet line is fluidically coupled to an outlet gap of the fluid cha

Abstract: A method 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 and methods for identifying defects in electrodes are described. A system to detect defects in an electrode can include at least one camera and at least one processing device configured to detect the presence or absence of one or more defects in an electrode using image input from the camera. Camera-based image analysis can be used to improve product quality and reliability.

Abstract: Systems and methods for identifying defects in manufacturing equipment are described. Camera-based image analysis can be used to improve product quality and reliability. Imagery of a machine surface can be repeatedly captured and analyzed by a processing device. Machine surfaces can be etched with landmarks to aid in removing distortion in imagery collected from the surfaces.

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 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: 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: 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.