Abstract: In various embodiments, provided are an electrode plate comprising a main body region and an isolation region, the isolation region is arranged on both sides of the main body along a width direction of the electrode plate, the isolation region is provided with an insulating strip coating, and the main body region is provided with an active material layer, a method for preparing the electrode plate, a secondary battery, a battery module, and a battery pack. An outer edge of the active material layer is confined to a junction between the main body region and the isolation region, and a contact angle between a slurry forming the active material layer and the insulating strip coating is more than 90°, thereby improving the problem of diffusion of the active material slurry along the width direction of the electrode plate, and reducing a defective rate of the electrode plate.

Abstract: The present application provides a coating die, a coating device and a coating method. The coating die includes a first die and a second die, the first die is connected to the second die and enclosed to form a slot to output slurry; the first die includes a die body, a lip portion and a lip adjustment assembly; the lip portion is connected to the die body and is located at a discharge end of the slot; the lip adjustment assembly is used for adjusting a temperature of the lip portion to control a deformation of the lip portion. The solution of the present application can improve the consistency of coating.

Abstract: Provided are an air nozzle and a coater. The air nozzle includes an air outlet chamber, an air return chamber, and an infrared light assembly, where the air outlet chamber includes an air outlet panel, the air outlet panel facing a substrate to be treated; the air return chamber is provided with an air return panel on a side facing the substrate, the air return panel being provided with a plurality of punch holes for communication with the air return chamber; the air outlet panel is configured to convey a medium inside the air outlet chamber to outside the air nozzle, and the medium enters the air return chamber through the air return panel after passing through the substrate; and the infrared light assembly is provided on a path of the medium entering the air return chamber.

Abstract: An embodiment of the present application provide an electrode assembly, a battery cell, a battery, and an electrode assembly manufacturing equipment and method. Among that, the electrode assembly includes a negative electrode plate and a positive electrode plate which form a bending region. The positive electrode plate includes bending portions located in the bending region, the bending portion includes a positive electrode current collecting layer and a positive active substance layer, and at least one side surface of the positive electrode current collecting layer is provided with the positive active substance layer in a thickness direction of the positive electrode plate. At least one positive active substance layer is provided with the barrier layer, at least a part of the barrier layer is intercalated in the positive active substance layer provided with the barrier layer, and coats at least a part of particles in the positive active substance layer.

Abstract: A strip diverting mechanism includes a negative pressure unit and an air discharge unit. The negative pressure unit and the air discharge unit are arranged opposite each other, and a gap through which a strip passes is formed between the negative pressure unit and the air discharge unit. The negative pressure unit is configured to provide a suction force to the strip and the air discharge unit is configured to provide a repulsive force to the strip, to prevent the strip from contacting the negative pressure unit and the air discharge unit. The negative pressure unit comprises two air channels located at two sides of the negative pressure unit and configured to discharge air to a direction away from the negative pressure unit, to generate a negative pressure area at a center of the negative pressure unit.

Abstract: In various embodiments, provided are an electrode plate, a method for preparing the same, a secondary battery, a battery module, and a battery pack comprising a main body region and an isolation region, where the isolation region is arranged on both sides of the main body region along a width direction of the electrode plate, the isolation region is provided with an insulating strip coating, and the main body region is provided with an active material layer. An outer edge of the active material layer is confined to a junction between the main body region and the isolation region, and a contact angle between a slurry forming the active material layer and the insulating strip coating is more than 90°, thereby improving the problem of diffusion of the active material slurry along the width direction of the electrode plate, and reducing a defective rate of the electrode plate.

Abstract: An electrode plate manufacturing apparatus includes a roller press mechanism configured to roller press an electrode plate and a freezing mechanism disposed upstream of the roller press mechanism. The freezing mechanism is configured to freeze the electrode plate. An electrode plate manufacturing method includes freezing an electrode plate and roller pressing the frozen electrode plate.

Abstract: A coating shim and a coating device, for applying a first slurry and a second slurry to an object to be coated are provided. The coating shim includes: a first flow channel for applying the first slurry to the object to be coated to form a first coating layer; and a second flow channel for applying the second slurry to the object to be coated to form a second coating layer. The first flow channel has a first slurry outlet at a first end face of the shim facing the object to be coated, the second flow channel has a second slurry outlet at the first end face, and the first slurry outlet and the second slurry outlet are configured to partially overlap in a thickness direction of the shim, such that the first coating layer and the second coating layer partially overlap in the thickness direction of the shim.

Abstract: The present disclosure relates to the field of battery production device technologies, and more particularly, to an oven and a battery assembly line production device. The oven at least includes a first oven unit, a second oven unit, a third oven unit, and a fourth oven unit that are sequentially connected in series in a conveying direction of the electrode plate. Based on drying physical characteristics of the electrode plate, the first oven unit and the third oven unit are internally provided with air nozzles and infrared heaters for drying the electrode plate by hot air and infrared rays. The second oven unit and the fourth oven unit are internally provided with the air nozzles for drying the electrode plate by hot air.

Abstract: A strip diverting mechanism includes a negative pressure unit and an air discharge unit. The negative pressure unit and the air discharge unit are arranged opposite each other, and a gap through which a strip passes is formed between the negative pressure unit and the air discharge unit. The negative pressure unit is configured to provide a suction force to the strip and the air discharge unit is configured to provide a repulsive force to the strip, to prevent the strip from contacting the negative pressure unit and the air discharge unit.

Abstract: An electrode plate manufacturing apparatus includes a first coating device configured to apply a first active material coating on a first side of a current collector; a perforating device configured to perforate the current collector from a second side of the current collector, the second side being opposite to the first side; and a second coating device configured to apply a second active material coating on the second side of the current collector, where the perforating device is located downstream of the first coating device along a travel path of the current collector, and the second coating device is located downstream of the perforating device along the travel path of the current collector.

Abstract: A rolling device includes a roller, a heat exchange assembly, and an adjustment assembly. The roller is provided with a rolling surface configured to roll a target member. The heat exchange assembly is arranged opposite to the rolling surface. The heat exchange assembly is configured to adjust the temperature of the rolling surface. The adjustment assembly is connected to the heat exchange assembly and is configured to adjust the position of the heat exchange assembly in an axial direction of the roller, so as to adjust temperatures of different regions of the rolling surface of the roller in the axial direction. A rolling system includes the rolling device, a measurement device and a controller, the measurement device is configured to measure the thickness of the target member after rolling; and the controller is connected in communication with the measurement device and the adjustment assembly.

Abstract: A coating shim and a coating device, for applying a first slurry and a second slurry to an object to be coated are provided. The coating shim includes: a first flow channel for applying the first slurry to the object to be coated to form a first coating layer; and a second flow channel for applying the second slurry to the object to be coated to form a second coating layer. The first flow channel has a first slurry outlet at a first end face of the shim facing the object to be coated, the second flow channel has a second slurry outlet at the first end face, and the first slurry outlet and the second slurry outlet are configured to partially overlap in a thickness direction of the shim, such that the first coating layer and the second coating layer partially overlap in the thickness direction of the shim.

Abstract: Provided are an air nozzle and a coater. The air nozzle includes an air outlet chamber, an air return chamber, and an infrared light assembly, where the air outlet chamber includes an air outlet panel, the air outlet panel facing a substrate to be treated; the air return chamber is provided with an air return panel on a side facing the substrate, the air return panel being provided with a plurality of punch holes for communication with the air return chamber; the air outlet panel is configured to convey a medium inside the air outlet chamber to outside the air nozzle, and the medium enters the air return chamber through the air return panel after passing through the substrate; and the infrared light assembly is provided on a path of the medium entering the air return chamber.

Abstract: A coating extrusion head may include an extrusion head body and at least one pressure regulating assembly. The extrusion head body may be provided with a coating slot and an accommodating cavity which may be in communication with each other. The at least one pressure regulating assembly may be arranged in the accommodating cavity, and the pressure regulating assembly may be configured to be expandable in a first direction perpendicular to the coating slot.

Abstract: A strip diverting mechanism includes a negative pressure unit and an air discharge unit. The negative pressure unit and the air discharge unit are arranged opposite each other, and a gap through which a strip passes is formed between the negative pressure unit and the air discharge unit. The negative pressure unit is configured to provide a suction force to the strip and the air discharge unit is configured to provide a repulsive force to the strip, to prevent the strip from contacting the negative pressure unit and the air discharge unit.

Abstract: A coating shim and a coating device, for applying a first slurry and a second slurry to an object to be coated are provided. The coating shim includes: a first flow channel for applying the first slurry to the object to be coated to form a first coating layer; and a second flow channel for applying the second slurry to the object to be coated to form a second coating layer. The first flow channel has a first slurry outlet at a first end face of the shim facing the object to be coated, the second flow channel has a second slurry outlet at the first end face, and the first slurry outlet and the second slurry outlet are configured to partially overlap in a thickness direction of the shim, such that the first coating layer and the second coating layer partially overlap in the thickness direction of the shim.

Abstract: Provided are an electrode plate drying device and a coating device, and relates to the technical field of batteries. The electrode plate drying device includes an oven, a first deflector roll, and a second deflector roll. The oven is configured to dry an electrode plate. The first deflector roll and the second deflector roll are disposed in the oven. The electrode plate winds around the first deflector roll and the second deflector roll. Positions of the first deflector roll and/or the second deflector roll in the oven are tunable so as to adjust a movement distance of the electrode plate in the oven.

Abstract: The present application discloses an electrode plate for a battery, a battery and a power consuming device. The electrode plate for a battery may comprise: a substrate, at least one binding layer and at least one barrier layer laminated in sequence on the substrate, wherein the binding layer and the barrier layer may be distributed alternately in the thickness direction; the binding layer may comprise a first binder; and the barrier layer may comprise a multi-component copolymer different from the first binder and an optional second binder, identical to or different from the first binder in the binding layer, wherein the multi-component copolymer may be a linear multi-component copolymer.

Abstract: A drying apparatus and an oven are provided. In some embodiments, the drying apparatus is used for drying a material. The drying apparatus includes: a blowing mechanism having an air-outlet channel for conveying dry gas to the material; and a guide member movably arranged in the air-outlet channel and used for dividing the air-outlet channel into a first sub-air-outlet channel and a second sub-air-outlet channel, and a first air outlet of the first sub-air-outlet channel and a second air outlet of the second sub-air-outlet channel both facing the material. In the above way, the drying apparatus provided in the present application is capable of realizing adjustment of an air speed without changing an air volume, thereby ensuring the drying efficiency.