Final welding device for power batteries

The invention discloses a final welding device for power batteries. The final welding device for the power batteries comprises a turnplate mechanism, wherein a plurality of battery core clamps are arranged on the turnplate mechanism; a feeding workstation, a before-welding flat pressing workstation, a positive electrode welding and dedusting workstation, a negative electrode welding and dedusting workstation, an after-welding flat pressing workstation, a discharging workstation and a clamp dedusting workstation are sequentially arranged around the turnplate mechanism; the discharging workstation is provided with a tension testing mechanism for performing tension testing on welded battery cores, and a discharging manipulator for transferring the battery cores on the battery core clamps to the tension testing mechanism for the tension testing; the clamp dedusting workstation is provided with a dedusting mechanism for removing dust from the battery core clamps. The final welding device for the power batteries ac