Gasket for coating lithium battery

The utility model relates to the technical field of lithium battery pole piece coating, in particular to a gasket for lithium battery coating, which comprises a primary gasket and secondary gaskets, an open groove is arranged at the upper end of the primary gasket, constant flow blocks are formed on two sides of the groove, two secondary gaskets are arranged at the upper end of the primary gasket, and the secondary gaskets are connected with the primary gasket. The sub-gasket comprises a fixed part and an extension part, and the fixed part is clamped with the upper end of the constant flow block; the length of the extension part can be set according to actual conditions; according to the utility model, the extension part is arranged, so that the gasket can be suitable for coating of different models, that is, the gasket does not need to be purchased and designed again when the coating size is changed, and the production cost is reduced. 本实用新型涉及锂电池的极片涂布技术领域，具体涉及一种用于锂电池涂布的垫片，包括母垫片和子垫片，所述母垫片上端设有开口的凹槽，在所述凹槽两侧均形成定