Electrode protection assembly, joint assembly and battery cell

The utility model discloses an electrode protection assembly, a connector assembly and a battery cell. The electrode protection assembly comprises a cap assembly, a positive electrode and a negative electrode, a cap opening is formed in the top end of the cap assembly, the top end of the negative electrode extends to be exposed at the cap opening, a pressing protection cover is correspondingly arranged at the position, corresponding to the cap opening, in the cap assembly, and the pressing protection cover is located on the periphery of the negative electrode and can slide up and down in a cavity of the cap assembly. An elastic supporting structure which pushes and presses the protective cover upwards to slide and blocks the opening of the cap is arranged between the cavities of the cap assembly, and the positive electrode is arranged on the inner surface of the cavity of the cap assembly. According to the device, through structural design of the electrode protection assembly, the positive electrode and the n