Multi-stage flow field control technology
Industry pain point
During the laser fly-cutting process of lithium battery tabs, metal droplets are sputtered to form micron-sized molten beads, causing micro-short yield loss of the cell. Traditional negative pressure dust removal solutions are caught in a dilemma: high negative pressure wind speed causes pole pieces to shake and affect cutting quality; insufficient wind speed will have an airflow attenuation effect and cannot effectively capture sparks.
Core technical mechanism
Based on computational fluid dynamics (CFD) coupled analysis with multiple physical fields, innovative development of "segmented turbulence control technology":
Ø First-level directional energy dissipation zone: The air flow is accelerated through the structural design of Laval nozzle to form a local high-pressure swirling flow field to accurately control the shape and trajectory of spark sputtering;
Ø Second-level transient trapping and transfer zone: an inert coating cavity is set at the end of the sputtering trajectory, and the Venturi effect is used to achieve instantaneous spark cooling and physical deposition;
Ø Three-stage blow and suction collaborative waste removal system: Build a Bernoulli airflow curtain wall in an enclosed cavity, optimize the particle transport path through Stokes's law, and achieve zero residual removal of molten dust.
technological breakthroughs
■ Solve the contradiction between "pole piece jitter-trapping efficiency" in negative pressure adsorption
■ Break through the "distance attenuation effect" existing in traditional dust removal systems
■ Achieve physical isolation between sputtered and pole piece surface (>99.97% rejection)
application value
ForHigh-end lithium battery manufacturing such as 4680 large cylindrical batteries and laminated batteries provides zero-risk solutions for micro-short circuits, with significant improvement in yield and has been verified by mass production by many head battery companies.
Industry pain point
During the laser fly-cutting process of lithium battery tabs, metal droplets are sputtered to form micron-sized molten beads, causing micro-short yield loss of the cell. Traditional negative pressure dust removal solutions are caught in a dilemma: high negative pressure wind speed causes pole pieces to shake and affect cutting quality; insufficient wind speed will have an airflow attenuation effect and cannot effectively capture sparks.
Core technical mechanism
Based on computational fluid dynamics (CFD) coupled analysis with multiple physical fields, innovative development of "segmented turbulence control technology":
Ø First-level directional energy dissipation zone: The air flow is accelerated through the structural design of Laval nozzle to form a local high-pressure swirling flow field to accurately control the shape and trajectory of spark sputtering;
Ø Second-level transient trapping and transfer zone: an inert coating cavity is set at the end of the sputtering trajectory, and the Venturi effect is used to achieve instantaneous spark cooling and physical deposition;
Ø Three-stage blow and suction collaborative waste removal system: Build a Bernoulli airflow curtain wall in an enclosed cavity, optimize the particle transport path through Stokes's law, and achieve zero residual removal of molten dust.
technological breakthroughs
■ Solve the contradiction between "pole piece jitter-trapping efficiency" in negative pressure adsorption
■ Break through the "distance attenuation effect" existing in traditional dust removal systems
■ Achieve physical isolation between sputtered and pole piece surface (>99.97% rejection)
application value
ForHigh-end lithium battery manufacturing such as 4680 large cylindrical batteries and laminated batteries provides zero-risk solutions for micro-short circuits, with significant improvement in yield and has been verified by mass production by many head battery companies.
