Electrode plate rolling apparatus and electrode plate rolling method

An electrode plate rolling apparatus, configured to roll an electrode plate, wherein the electrode plate comprises a plurality of coated regions and a plurality of uncoated regions distributed alternately along a width direction of the electrode plate, and the electrode plate rolling apparatus comprises a 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 comprises a first extension assembly for extending 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;
• and
• 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,
• wherein the electrode plate rolling apparatus further comprises a second extension assembly including a plurality of extension rollers disposed downstream of the cooling part, each extension roller for applying a pulling force to the electrode plate to extend the uncoated region and the coated region disposed between the heating part and the cooling part, and a tension monitoring part;
• and a control part of the electrode plate rolling apparatus is able to control a rotation speed of the extension roller according to a monitoring result of the tension monitoring part;
• and
• wherein the heating part comprises multiple first heating units distributed alternately along the width direction of the electrode plate, each first heating unit being configured to directly heat a corresponding uncoated region, and the cooling part comprises first multiple cooling units distributed alternately along the width direction of the electrode plate, each first cooling unit is configured to directly cool a corresponding uncoated region.