EVモビリティ向けシステムソリューションとオン･ザ･フライ溶接技術

System Solutions and On-The-Fly Welding for EV Mobility Steffen Mueller Applications Manager, R&D IPG Photonics, USA February 2026 © 2026 IPG Photonics

Agenda ➢ Introduction ➢ IPG Components, sub-System and System Solutions ➢ On-The-Fly Welding Applications ➢ Case Studies

The Pioneering Force I Behind IPG Fiber Lasers IPG Photonics Overview IPG Photonics is the inventor and world’s leading producer of high-power fiber lasers, which enable greater precision, high-speed processing, more flexible production methods and enhanced productivity within industrial, automotive, medical, semiconductor, instrumentation, scientific, and defense applications. Fiber lasers combine the advantages of semiconductor diodes, such as long life and high efficiency, with the high amplification and precise beam qualities of specialty optical fibers to deliver superior performance, reliability and usability. IPG has continually pioneered the development and commercial production of numerous unique technologies related to fiber lasers, combining deep materials science expertise and process know-how with a vertically-integrated business model. The company produces all key components of its fiber laser technology in-house, enabling: (1) better performing, higher quality solutions; (2) faster product development; (3) more efficient production methods with high yields throughout the process; (4) industry-low product delivery times; and (5) rapid ongoing cost reduction with an industry-leading margin profile. IPG’S HISTORY OF INNOVATION 1990: IPG first to propose 2000: first 100 W 2004: first 1 kW 2008: first 5 kW 2014: first kW class 2020: Introduction of high-power fiber laser solution single-mode fiber laser single-mode and 10 kW single-mode fiber laser fiber lasers with wall LightWELD handheld at OSA multi-mode fiber laser and 50 kW multi-mode plug efficiency >45% laser welding system Conference, first 1993: first single-mode 2002: first single fiber laser 2018: first 5 W fiber laser 2022: Introduction of pumping solution powered emitter diode pumping continuous wave LightWELD XR handheld by multi-mode diodes and and 1 kW, 2 kW and 6 2006: first 3 kW 2010: first QCW lasers with QCW- laser welding & cleaning 200-500 mW erbium-doped kW ytterbium fiber single-mode fiber laser lasers with 1.5 kW mode and system fiber amplifier lasers single-mode beam quality adjustable mode beam 1990 2023 2001: first erbium 2017: first 120 kW doped fiber laser 2005: first 2kW single-mode multi-mode 2009: first high-brightness for medical fiber laser 2019: first 2021: Introduction of and 20kW multi-mode fiber 100 W fiber-coupled laser ultra-compact LightWELD XC handheld 1996: first 10 W single- applications 2003: first multi-chip 1991: first 2 W on submount diode lasers and 40 W/110 W diode and 10 kW 2013: first 100 high-power laser welding & cleaning mode fiber laser and single-mode packages thulium doped fiber lasers single-mode fiber laser kW multi-mode fiber lasers system nanosecond pulsed fiber laser for medical applications fiber laser ytterbium fiber laser © 2026 IPG Photonics 3

IPG Lasers in Battery Manufacturing Processes Manufacturing from raw material to battery pack Manufacturing process Welding processes • Collector welding • Lid to Case welding • Injection Pin hole seal Welding Mixing Coating Drying Solvent recovery • Pressure Relief Valve Welding • Busbar welding • Module/pack welding Foil Foil vacuum Slitting Calendering Cutting processes Drying cutting drying • Slitting • Drying • Foil cutting • Annealing • Flag notching • Foil structuring Electrode Case Filling Formation contacting insertion/ and Aging closure Cleaning Module & Pack welding • Foil Cleaning • Terminal cleaning from electrolyte • Case Paint removal Recycling • Surface structuring © 2026 IPG Photonics 4

IPG Provides Solutions for all Typical EV Applications For All Battery Types (cylindrical, pouch, prismatic) For All Battery Packs For All Electric Motors For All Power electronics Tab to Pole Welding ✓ Bus-bar Welding ✓ Hairpin Welding ✓ Bus-bar Welding ✓ Cap to Can Welding ✓ Terminal Welding ✓ Rotor & Stator Stacks Welding ✓ Cover Welding ✓ Pressure Relief Valve Welding ✓ Case Welding ✓ Hairpin Ablation ✓ Cleaning / Structuring ✓ Injection Pin hole seal Welding ✓ Real-Time Quality Monitoring ✓ Electrical Steel Sheet Cutting ✓ Foils Welding ✓ Battery Modules Marking ✓ Safety Cap Welding ✓ Cleaning / Structuring ✓ Foils Cutting ✓ Cleaning / Structuring ✓ © 2026 IPG Photonics 5

Key Requirements for EV Welding WELDING DEPTH POROSITY LARGE FIELD HIGH CONSISTENCY FREE WELD OF VIEW THROUGHPUT EXTREMELY LOW SPATTER FREE 100% QUALITY EASE OF SYSTEM HEAT INPUT PROCESS CONTROL INTEGRATION MEETING WELDING REQUIREMENTS ENSURES SAFE & RELIABLE COMPONENTS © 2026 IPG Photonics 6

AMB Laser Technology AMB stabilizes keyhole welding process, eliminates spatter and increases weld quality AMB Fibers Adjustable Mode Beam Lasers 100 μm Ring 14 um Core 150 μm Ring 50 μm Core 300 μm Ring 100 μm Core 600 μm Ring 100 μm Core 10+ more combinations available AMB Effect: + custom combination by request! Keyhole stabilization = weld quality up © 2026 IPG Photonics 7

AMB Laser Technology European Synchrotron Radiation Facility (ESRF) Standard Fiber New AMB Fiber © 2026 IPG Photonics 8

Beam Delivery High Power Scanner Integrated Height Adjustment and Process Monitoring Industrial Enclosure Rugged and reliable in the most Machine Vision demanding environments. Visualize the workpiece for weld placement. Fast Working distance changes Fast adjustment of the working distance, under 10 msec. Process Monitoring Monitor the process quality with LDD-700. Quick Change Window Assembly Change the protective window Window Contamination in under 2 minutes. Sensor No tools required! Indicates when the protective window needs replacing. © 2026 IPG Photonics 9

Weld Quality Control – LDD Technology LDD measures every part before it leaves the factory ▪ LDD is the only technology that is capable of performing simultaneous measurements of: ✓ Seam Position ✓ Workpiece Height ✓ Keyhole Depth ✓ Finished Weld Surface ✓ Transverse Profile ➢ Real-time weld depth measurements through welding optics ➢ LDD inspects 100% of parts produced © 2026 IPG Photonics 10

Weld Quality Control – LDD Technology Simultaneous measurements in calibrated metric units Finished Weld Surface Keyhole Depth Workpiece Height Seam Location Transverse Profile ➢ 20+ Weld Metrics ▪ Weld penetration, distances in range, min/max ranges, signal density, lateral weld profiles, bead height, et. al. © 2026 IPG Photonics 11

Weld Quality Control – LDD Technology Material: Aluminium Laser power: 3 kW Core / 0 kW Ring Scan speed: 400 mm/s © 2026 IPG Photonics 12

Integrated Laser Solutions D33 HP Scan Head with LDD-700 WELDING DEPTH CONSISTENCY ✓ HIGH THROUGHPUT ✓ LDD Core Unit YLS-6000 Laser with LC170 Chiller SPATTER FREE PROCESS ✓ POROSITY FREE WELD ✓ EXTREMELY LOW HEAT INPUT ✓ LARGE FIELD OF VIEW ✓ PC & HMI Robot PLC 100% QUALITY CONTROL ✓ EASE OF SYSTEM INTEGRATION ✓ Integration Control Center © 2026 IPG Photonics 13

Turnkey Laser System IPG designs fully-integrated laser processing systems with custom tooling, process recipes, and single vendor support. Laser Automated Cylindrical Battery Vision Module Laser Welding System Beam Delivery QA (LDD) EV Cube – Cartesian Battery Motion Module Laser Welding System (Cartesian & Robotic) Workholding © 2026 IPG Photonics 14

On-The-Fly Laser Welding Coordinated Motion OTF Processing On The Fly Laser Welding (OTF): Process where welding is performed continuously while work piece and/or scan head is in motion. Linear OTF Welding Rotary OTF Welding Infinite FOV Welding Battery Pack Busbar Welding 46XX cell manufacturing Fuel Cells, Cooling Plates ➢ High through-put with optimal process window © 2026 IPG Photonics 15

Stationary vs On-The-Fly Welding Stationary Welding of Cells ▪ Max. linear acceleration of gantry ▪ Slow down – stop – weld – acceleration for each weld position (3 cells at a time) – large FOV On The Fly Welding of Cells ▪ Gantry speed 300mm/s ▪ Continuous motion while welding at each cell position – small FOV Parameter Stationary OTF Cell type 21700 21700 Number of cells 160 160 Advantages of on-The-Fly Welding ➢ Cycle Time Reduction Cycle time 41s 13s ➢ Optimized Process Window Throughput 240 cells/min 720 cells/min LDD YES YES © 2026 IPG Photonics 16

On-The-Fly Welding of Battery Packs Application requirements: ✓ High throughput laser welding of current collectors/bus bars to cylindrical cells (e.g. 18650 type, 21700 type, 4680 type) in a 3-axis gantry system using HP Scanner ✓ Weld quality Control – keyhole depth monitoring on the fly ✓ 0.1mm … 0.5mm copper, aluminum, steel et al (bus bar) ✓ 0.3mm … 0.8mm Ni-plated steel, aluminum or nickel (cell terminals) ➢ Up to 1000 cells/min throughput © 2026 IPG Photonics 17

Rotary On-The-Fly Welding of Cylindrical Cells Application requirements: ✓ 200ppm laser welding of connector plates to jelly roll for cylindrical cells 46XX on a rotating conveyor with cell carriers installed using HP Scanner ✓ 0.1mm … 0.2mm copper (connector plate) to copper foils ✓ 0.1mm … 0.3mm aluminum (connector plate) to Test Results: Current Collector welding 4680 on the Rotary Parameter Stationary OTF Cell type 4680 4680 Cells per rotation 12 12 Cycle time 15s 3.6s Stationary Welding OTF Welding Throughput 48ppm 200ppm 4680 cell Collector 4680 cell Collector © 2026 IPG Photonics 18

On-The-Fly Weld Quality Control – LDD LDD vs Microscopy Results Weld direction -480 -460 -440 -420 -400 -380 -360 -340 -320 -340 -360 y = 0.975x + 10.5 R² = 0.976 -380 -400 -420 -440 -460 LDD Keyhole Depth Measurement Example ✓ OTF line weld at high weld speed ✓ Across 250 welds, LDD depth measurements matches destructive section measurements ✓ Longitudinal section showing actual weld depth © 2026 IPG Photonics 19

Linear OTF Welding with LDD (Patent pending) Case Study A: Linear OTF weld process with LDD monitoring Material: 0.3mm copper busbar to 0.3mm Ni-plated steel (21700 cell), spiral weld shapes Equipment: EV-Cube, YLS-SM-AMB Laser, HP Scanner, LDD ❖ Confirmation of weld depth measured with LDD using cross sections of weld ❖ Weld depth within QA window © 2026 IPG Photonics 20