The invention discloses a poleless lithium battery cover plate and relates to the field of lithium battery cover plates. The poleless lithium battery cover plate comprises a top cover plate, a positive plate mounting hole, a negative plate mounting hole, a U-shaped positive plate, a U-shaped negative plate, and PPS nano integrated injection molded parts. Two ends of the top cover plate are provided with the positive plate mounting hole and the negative plate mounting hole, the U-shaped positive plate is installed in the positive plate mounting hole, the U-shaped negative plate is installed inthe negative plate mounting hole, and the connection parts of the U-shaped positive plate and the U-shaped negative plate and the top cover plate are provided with the PPS nano integrated injection molded parts. Under the premise of ensuring the performance of a conventional power battery cover, sealing ring assembly, pole assembly and insulating plastic piece assembly in a conventional power cover are omitted, the number of parts is reduced, and the processing process is effectively reduced.