Electric vehicle battery cell connectors are critical for transmitting power between individual battery cells, requiring high conductivity, corrosion resistance, and structural stability, operating under high current (up to 300A) and temperature fluctuations (-40°C to 120°C). Traditional soldering introduces excessive heat that damages cell terminals, while mechanical connections suffer from contact resistance and loosening due to vibration. DaokeDao plastic laser welding offers a precise, low-thermal-impact solution for connector housings made of flame-retardant PA66-GF and PC materials, fully complying with IATF 16949 and EV battery safety standards. The laser achieves ±0.008mm positioning accuracy, focusing energy on the weld joint to form a molecular bond with tensile strength ≥28MPa, ensuring no loosening under long-term vibration. The process eliminates contact resistance, maintaining stable power transmission, and the hermetic seal (IP67 rating) blocks moisture and electrolyte corrosion. Our equipment supports automated batch welding, with a cycle time of 8-11 seconds per unit and a production capacity of 100 pieces per hour, pass rate ≥99.4%. By improving connector reliability, DaokeDao laser welding helps EV manufacturers reduce battery pack failure rates and extend service life.
