The invention belongs to the technical field of
lithium ion batteries, and particularly relates to a
lithium ion battery efficient
liquid injection device which comprises a base, a vacuum standing boxfixed to the left side of the base, a right side fixing support, a
liquid injection frame fixed to the support, a
liquid injection clamp arranged below the liquid injection frame, a
battery cell arranged in the liquid injection clamp, and a
stroke motor fixed to the liquid injection frame through a template. A liquid injection head fixing base is arranged on the
stroke motor, a rotating screw rodmoving up and down is arranged in the center of the liquid injection frame, and two movable fixing rods are arranged on the liquid injection frame on the two sides of the rotating screw rod. The problems that large battery liquid injection is difficult and large battery bulging and
electrolyte spraying are caused by liquid injection can be effectively solved, and remote battery carrying is avoided due to the
integrated design of the liquid
injection device and the vacuumizing device; the liquid injection clamps of the battery cells of different specifications can be replaced by controlling the rotary screw rod according to the size of the battery; and the relative position between the
lithium battery cell and the liquid injection clamp can be adjusted by controlling the
stroke motor according to the number of batteries, multiple batteries can be injected at a time, and the liquid injection efficiency is improved.