Suzhou RENYI New Energy Technology — the strategic partner of Germany's soniKKs[cite: 19]. High-performance ultrasonic metal welding solutions for EV battery, medical devices, and 3C electronics manufacturing[cite: 20].
High-performance ultrasonic welding systems engineered for the most demanding industrial applications[cite: 203].
Engineering depth for each system — explore tags, specifications, and intended applications across industries[cite: 139].
A compact, aircraft-aluminum welding head engineered for delicate, high-frequency joining tasks[cite: 177, 198]. The integrated STT (Smart Tracking Technology) system continuously monitors phase and amplitude, ensuring stable welds even on miniature components[cite: 179].
Built on a fully modular 20 kHz architecture with a 50 mm stroke[cite: 220, 225]. K6 NUX-50 delivers consistent, high-energy welds for EV battery cells, busbars, and complete PACK assembly[cite: 245]. Real-time digital feedback on pressure and displacement enables full process traceability[cite: 214].
The flagship of the RENYI line. Featuring a full-wave dual-fixed mechanical structure, R20-T100 distributes welding force evenly across large contact areas[cite: 266, 286]. Maximum pressure of 8000 N makes it ideal for thick busbars, heavy harnesses, and demanding battery work[cite: 279, 289].
Purpose-built for automotive HV cable manufacturing[cite: 153]. M2050H-B handles a single-cycle weld across conductor cross-sections from 10 to 50 mm², producing stable, low-resistance, gas-tight connections that meet automotive requirements[cite: 149, 295].
A versatile ultrasonic generator engineered for flexibility across 20kHz to 100kHz. The K1 supports plastic welding, precision cutting, and handheld operations from a single compact aluminum-alloy platform. BNC connector interface enables quick tool changeover for multi-process workflows.
A precision 60kHz ultrasonic system purpose-built for welding metal wires onto glass surfaces. The ultra-low 15W output ensures safe non-destructive bonding for sensitive new energy components. Compact footprint integrates easily into automated production lines for micro-joining applications.
An ultrasonic sharp-knife cutting platform operating at 30kHz for precision cutting across multiple industries. The oscillating blade dramatically reduces friction and prevents material sticking, delivering clean burr-free edges on composites, technical textiles, rubber and food products.
A mid-range ultrasonic generator delivering 800-2000W across 20-40kHz frequencies. The K3 bridges the gap between compact systems and high-power industrial units, making it the versatile choice for plastic welding, light metal joining and cutting operations in medium-volume production environments.
A robust 20kHz ultrasonic generator delivering 3000-4000W for demanding industrial applications. Equipped with LEMO1S and BNC connectors, the K4 handles large plastic assemblies and heavy metal welding with consistent power delivery. Built for continuous operation in production environments.
The K5 is the most versatile generator in the lineup, covering 20-60kHz with 3000-4000W output. This multi-frequency capability enables plastic welding, metal joining and ultrasonic atomization from a single generator platform, reducing equipment costs for multi-process facilities.
An industrial-grade ultrasonic welding system delivering 6000-15000W. The R20-S1000 features a large floor-standing cabinet with digital PLC control for precision management of high-energy welds. Capable of welding wire harnesses exceeding 150mm² cross-section, it is the choice for heavy industry.
A fully automatic FPC ultrasonic welding machine designed for new energy battery production. Equipped with a vision positioning system for micron-level alignment and real-time welding monitoring, the R-AMW-FPC-3512 delivers precision aluminum-to-FPC welds with complete process traceability.
A fully automatic wire harness ultrasonic welding system featuring integrated PLC automation from Keyence, SMC/Airtac pneumatics and Mitsubishi motors. Handles 1.5-20mm² wire with 0.6-1.2 second cycle time. CCD vision ensures precise alignment for consistent high-volume production.
A purpose-built wire harness welder for 2-75mm² conductors delivering 6000-12000W. Digital PLC control supports multiple welding modes including time, energy, power and depth. The integrated alloy steel main body ensures mechanical stability and repeatable weld quality across production runs.
A compact wire harness welder covering 0.25-30mm² conductor range. With 3000-6000W output and dual-voltage support, the R20-TS4 is equally at home in fine wire sensor applications and medium-gauge automotive harness production. Multiple welding modes provide process flexibility.
A versatile ultrasonic metal welder delivering 4000-8000W with up to 8000N weld pressure. Handles wires to 75mm² and busbars to 6mm thickness. The pneumatic compound motion system with multi-mode digital control ensures consistent weld quality across a wide range of applications.
A heavy-duty ultrasonic metal welder engineered for the largest cross-section applications. With 6000-12000W power and 8000N weld pressure, the R20-P80 handles wires up to 95mm² and busbars up to 10mm thick, making it the premier choice for energy storage and heavy EV module assembly.
A multi-frequency precision ultrasonic welder covering 20-40kHz with 800-3000W output. Designed specifically for CCS cell contacting (0.35-0.7mm) and FPC copper foil (35-70μm) applications. The 1000N pressure system delivers gentle yet reliable joints on the most delicate components.
A comprehensive range of titanium alloy ultrasonic transducers covering 20-40kHz. Available in standard and high-amplitude variants with power handling up to 4000W. LEMO and BNC connector options ensure compatibility across the entire RENYI generator lineup for any application.
Not just equipment — full lifecycle technical support, from conceptual design to ongoing process optimization[cite: 167].
SIT-based networked data transmission enables seam-by-seam traceability and intelligent quality control — meeting automotive-grade production standards[cite: 181, 199].
Standardized modular interfaces let our equipment integrate quickly into existing automation lines, supporting automated sorting of pass/fail parts[cite: 181, 214].
For EV CCS, battery modules, and motor controllers — we deliver complete electrical-connection solutions from initial design through process optimization[cite: 167].
Common questions about ultrasonic metal welding and our equipment.
Company milestones, industry trends, technical deep dives, product launches, and updates from our partner soniKKs.
Expanding our European presence to better support clients across the EU's growing EV battery sector.
Read article →As automakers accelerate solid-state programs, ultrasonic welding faces new requirements — here's our analysis.
Read article →A practical guide to controlling intermetallic compound formation when welding copper to aluminum tabs.
Read article →Faster sampling, deeper data analytics, and seamless MES integration — meet the next generation of K6.
Read article →Germany's soniKKs introduces a new generator platform with 30% higher power density — coming to RENYI systems.
Read article →Whether you're sourcing your first ultrasonic system or scaling a multi-line battery PACK facility, our team will pair you with the right equipment and process expertise.
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