Abstract: A winding mechanism and a winding device. The winding mechanism includes at least two sets of unwinding mechanisms and a first clamping assembly. The unwinding mechanism is configured to unwind and convey an electrode sheet and is capable of independently conveying the electrode sheet, and the unwinding mechanism includes an electrode sheet starting end and an electrode sheet free end. The first clamping assembly is configured to enable the electrode sheet free end of any of the unwinding mechanisms to be conveyed to a next process. Each set of unwinding mechanism of the winding mechanism is capable of operating independently, and the electrode sheet free end of each unwinding mechanism is conveyed to a next process through the first clamping assembly.

Abstract: The electrode plate laminating apparatus includes: a first laminating roller assembly, including a first laminating roller and a second laminating roller. The first laminating roller and the second laminating roller face each other. The first laminating roller and the second laminating roller are configured to sequentially stack and laminate a first separator, a first electrode plate, and a second separator; and a side separator laminating assembly, configured to laminate a portion of the first separator extending beyond a side edge of the first electrode plate with a portion of the second separator extending beyond the side edge of the first electrode plate. Embodiments solve the problem of overlapping of a first electrode plate and a second electrode plate caused by separator folding during a winding process of a first separator, the first electrode plate, a second separator, and the second electrode plate for preparing a bare cell.

Abstract: A battery cell, the battery, an electrical apparatus, a combination apparatus and method, and a processing device. The processing device is configured to process the battery, and includes the combination apparatus. The combination method includes: driving the combination apparatus to combine and fix a part of a separator to a first electrode plate and/or a second electrode plate. The electrical apparatus includes the battery. The battery includes the battery cell. The battery cell includes an electrode assembly. The electrode assembly includes the first electrode plate, the second electrode plate, and the separator. The first electrode plate and the second electrode plate are alternately stacked or are alternately stacked and wound. At least a part of the separator is disposed between the first electrode plate and the second electrode plate, and the part of the separator is combined with and fixed to the first electrode plate and/or the second electrode plate.

Abstract: An electrode assembly, a battery cell, a battery, and a power consuming apparatus. The electrode assembly includes a first electrode plate and a separator. The separator includes two separator layers formed by folding, and the two separator layers cover two opposite ends of the first electrode plate in a thickness direction thereof, respectively. The separator layer is provided with a first edge portion extending beyond an end portion of the first electrode plate in a width direction of the first electrode plate. The first edge portion is opposite to a folded end of the separator. The first edge portions of the two separator layers are connected to each other and form a first joint portion.

Abstract: The electrode assembly includes: an electrode plate including an electrode plate body and a tab region; and separator disposed on two opposite sides of the electrode plate. The separators each include a covering portion covering the electrode plate body and an exceeding portion connected to the covering portion, the exceeding portion covering a portion of the tab region, where the exceeding portions on the two opposite sides of the electrode plate are at least partially connected to each other and form a bonding portion, or the exceeding portions on the two opposite sides of the electrode plate are at least partially connected to the tab region and form the bonding portion. The electrode assembly enables two separators to envelop the electrode plate in the width direction of the electrode plate. Even if the separators fold, the electrode plate will not be exposed to the outside.

Abstract: An electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The second electrode plate is stacked with the first electrode plate in the thickness direction of the first electrode plate, and the polarity of the second electrode plate is opposite to that of the first electrode plate. The separator isolates the first electrode plate from the second electrode plate, and is stacked with the first electrode plate in the thickness direction of the first electrode plate. The separator, the first electrode plate and the second electrode plate are wound to form a whole. At a starting end and/or an ending end of the winding of the electrode assembly, at least one of the first electrode plate and the second electrode plate is fixed to the separator by using a connector.

Abstract: A battery cell, a battery, and an electrical device are provided. The battery cell includes a housing, a core assembly, a support positioned at one end of the core assembly, and an insulating member configured to match the support and wrap the core assembly. The core assembly, support, and insulating member are contained within the housing, with at least a portion of the insulating member connected to a wall surface of the support that is distal to the core assembly. This configuration enhances the connection reliability between the insulating member and the support, reduces the risk of the insulating member detaching, minimizes housing corrosion due to core assembly exposure, mitigates core assembly failure, and decreases the likelihood of electrolyte leakage, thereby improving the reliability and stability of the battery cell.

Abstract: A battery cell comprises: a housing, comprising a housing cover and a housing body; a battery cell assembly, comprising an active substance-coated part; and a support arranged at the end of the active substance-coated part distal to the opening of the housing body and fitting the battery cell assembly. The support is provided with a body part and an extension part arranged circumferentially on the body part. The projection of the body part on the plane of the housing cover is within the projection of the active substance-coated part on the plane of the housing cover, and the projection of the extension part on the plane of the housing cover is located outside the projection of the active substance-coated part on the plane of the housing cover.