Abstract: A coating die configured to apply a slurry onto a base material. The coating die includes a feed inlet, a distributary channel, a first confluence chamber and a discharge outlet. The feed inlet is configured to inject the slurry. The distributary channel is provided inside the coating die. The distributary channel includes a first flow channel and a plurality of second flow channels. The first flow channel communicates the feed inlet with the plurality of second flow channels, and the plurality of second flow channels is provided to be spaced from one another in a first direction. The first confluence chamber is provided inside the coating die and communicated with the plurality of second flow channels to collect the slurry from the plurality of second flow channels.

Abstract: Disclosed is a coating die and a battery electrode plate coating apparatus. The coating die is configured to apply a slurry on a substrate. The coating die includes a die body and a rectifying mechanism. The die body is provided with a discharging outlet. The rectifying mechanism is provided with a feeding inlet and a branching channel, where the feeding inlet is configured for injecting the slurry, the branching channel communicates with the feeding inlet and is provided with multiple branching openings, and the rectifying mechanism is exposed to the outside of the die body and is detachably connected to the die body, so that the multiple branching openings communicate with the discharging outlet.

Abstract: A taper-adjustable roller includes a support shaft, support sheets arranged circumferentially around the support shaft, and a first push member. Circumferential surfaces of the support sheets at sides of the support sheets facing away from the support shaft are assembled to form a roll surface. Each support sheet has a first end and a second end in an axial direction of the support shaft. The support sheets are swingable relative to the support shaft. The first push member is disposed on the support shaft, and is configured to push the first ends of the support sheets in a substantially radial direction, to move the first ends towards the support shaft and move the second ends away from the support shaft, or to move the first ends away from the support shaft and move the second ends towards the support shaft.

Abstract: This application relates to a tab flattening device. The tab flattening device includes: a roller configured to convey an electrode plate, a cover, and a flattening portion. The surface of the roller is in contact with the electrode plate in a contact region. The cover surrounds the contact region peripherally and includes a feed-in guide surface oriented toward the contact region. The flattening portion is disposed protrusively on the feed-in guide surface, and located opposite to a tab of the electrode plate. A tab guide surface is formed on the flattening portion. Along a feed-in direction of the electrode plate, the flattening portion is at least partially located upstream of the contact region.