Semiconductor wafer, packaging and testing, and panel production lines have strict standards for cleanliness levels. Even tiny dust particles and particulates can cause a decline in wafer yield and result in immeasurable losses. In a cleanroom, the AMR mobile robots responsible for wafer boxes and material transportation are the core carriers of the production line logistics, and the charging process is precisely the weak point where pollution sources are most likely to occur.

Traditional contact-based charging relies on metal contacts to complete power supply. The robot repeatedly stops, plugs and unplugs, causing the contacts to wear out over time and continuously generating metal micro-particles that float in the clean environment, exceeding the dust-free control standards; oxidation and accumulation of dust on the contacts will also lead to poor contact and sparking, not only affecting the stability of charging but also introducing safety hazards to the cleanroom. At the same time, the contact gaps are prone to accumulate dust, requiring frequent manual cleaning and maintenance, which disrupts the closed control logic of the dust-free workshop and deviates from the original intention of AMR unmanned operation.

The WIRELESSPT AMR wireless charging solution for semiconductor cleanrooms is designed for contactless magnetic induction power supply. The energy is transmitted through magnetic field coupling, without metal contact or friction loss. It eliminates the micro-particle pollution caused by contact wear at the source and perfectly meets the clean control requirements of dust-free production lines. The charging receiving end and the transmitting end adopt a fully sealed integrated design, with no exposed conductive contacts. Dust cannot adhere to the power coupling position, eliminating the need for frequent disassembly and cleaning, and avoiding secondary pollution caused by manual operations.

The entire solution is compatible with the operation logic of semiconductor workshops and supports static fixed-point opportunistic charging. The AMR can automatically start recharging during the material transportation gap or short stop at the waiting station, without the need to return to an independent charging station, without occupying valuable production line space, and without disrupting the material flow rhythm. The cleanroom space is expensive, and this solution's transmitting end can be embedded in the ground, installed in a hidden manner, without occupying the passage, without disrupting the clean decoration layout of the workshop, and is compatible with different clean levels of wafer, packaging, and panel production lines.

In addition to the dust-free feature, the solution also takes into account industrial-grade stability and protection capabilities. The fully sealed structure can resist the erosion of process water vapor and trace chemical mist in the cleanroom, and is not prone to aging and failure during long-term continuous operation, with a fault rate far lower than contact-based charging. The charging process has no electric arcs or sparks, eliminating safety hazards in flammable and explosive process gases, and is suitable for complex semiconductor manufacturing conditions. It also supports and integrates with the AMR scheduling system, uploading charging status in real time, and integrating into the production line MES scheduling system to achieve unmanned automatic recharging, breaking through the last link of the automated logistics of the cleanroom.

Semiconductor automation upgrade, cleanliness is the bottom line, stability is the core. Many production lines successfully introduced AMR, but got stuck at the charging stage, due to frequent dust pollution, contact failures, and manual maintenance, which negated the efficiency improvement brought by automation. The WIRELESSPT cleanroom-specific wireless charging solution takes "dust-free, maintenance-free, and spark-free" as the core design goals, does not produce additional pollutants, and meets the multiple important requirements of semiconductor factories for environment, yield, and safety.

In the current era of continuous iterative advanced processes and increasing penetration rate of dust-free production lines automation, the energy replenishment solution for AMR is no longer just a simple power supply tool, but a component of the cleanroom control system. WIRELESSPT wireless charging provides a compliant, stable, and maintenance-free non-contact power supply solution for AMR in semiconductor cleanrooms, protecting the production line clean environment, ensuring the all-day stable operation of material transportation robots, and helping semiconductor factories achieve true dust-free and unmanned production.