ELECTRODE SHEET ROLLING DEVICE, AND ELECTRODE SHEET ROLLING METHOD

This application discloses an electrode plate calendering apparatus and an electrode plate calendering method that are configured to calender an electrode plate. The electrode plate includes a coated region and an uncoated region. The electrode plate calendering apparatus includes a calender roller group, a heating part, and a cooling part. The heating part is configured to heat the electrode plate, and the cooling part is configured to cool the electrode plate. The heating part further includes an extension assembly, and the extension assembly can extend the uncoated region when the heating part heats the electrode plate. The electrode plate passes through the cooling part after passing through the heating part. The heating part and the cooling part are configured to reduce a difference between an extensibility parameter of the uncoated region and an extensibility parameter of the coated region. When the electrode plate passes through the cooling part after passing through the heating part, the temperature decreases, and the extended uncoated region has a lower rebound resilience and maintains an extended state, thereby reducing the difference in the extensibility parameter between the coated region and the uncoated region, reducing risks of wrinkling of the electrode plate during the extending, improving performance of the electrode plate, and preventing the electrode plate from being unable to rewind due to wrinkles.