Fiber Optic Temperature Sensor for EV Battery testing

1. Fiber Optic Temperature Solutions for EV Battery Testing

2. Fiber Optic Temperature Solutions: Batteries Batteries are the key differentiator between the various EV manufacturers: Battery Size Battery Capacity and Performance Battery Charging Time Battery Life Thermal Management is the Key in EV Batteries Higher Capacity and Performance with Smaller Size results into thermal stress Rapid Charging requires high current and hence increases the Thermal Stress Harsh Environmental and Operating Conditions i.e. Extreme Ambient Temperatures (Hot/Cold) result into Reduced Battery Life High Cooling System Efficiency become very critical for Harsh Operating Conditions (Rapid Acceleration / Breaking) i.e. Supercars Battery Management System: Accurate thermal profile characterization increases accuracy of Age Estimation Analytics

3. Fiber Optic Temperature Solutions: Batteries • Battery Pack Testing: • Life Cycle Testing • Abuse Testing • Performance Testing • EMC Testing • Power Rating Testing • Typical Requirements for Thermal Testing and Monitoring Systems • Wide Temperature Range to cover the extreme environmental conditions • Higher accuracy and response for better thermal profiling and BMS Analytics • Allowable intercell temperature difference is ~ 2⁰C • Sensors must be fast enough to detect Thermal Runway Situations • Highly Stable and Durable measurement system for EV Conditions • Under High Voltage and Chemical Environment • Thermal shock, Vibration Shocks, Mechanical Load etc. • Leakproof sensor design for Cooling System Monitoring

4. EV Battery: Cell Level Testing R501 T301 O101 L201 Monitoring Options OR OR OR FO sensor Cables Adjustable to place at diferent locations into Battery Cells Option for bundled sensors to optimize cable routing • Key Benefits of Fiber Optic Temperature Sensors: • Sensors with Rugged disposable tips, glued to Battery Cells • Sensors can also be placed on the actual cell with out any concern for safety, accuracy, noise interference • Accurate and Noise Free readings • Sensors Stability: Electrically, Magnetically and Chemically stable • Safety: Avoid Short-Circuit risk and protect Researchers and Test Environments • Easy to route cabling with Bundled Sensors

5. EV Battery: Module Level Testing Monitoring Options FO Sensor Cables R501 T301 O101 L201 OR OR OR • Key Benefits of Fiber Optic Temperature Sensors: • Rugged and Compact Design with ring terminal connectors • Standard and Custom Ring Terminal Sizes • Accurate and Noise Free readings with 100% Repeatability • Sensors Stability: Electrically, Magnetically and Chemically stable • Safety: Avoid Short-Circuit risk and protect Researchers and Test Environments • Easy to route cabling with Bundled Sensors BATTERYMODULE VENDOR-A BATTERYMODULE VENDOR-B BATTERYMODULE VENDOR-C BATTERYMODULEDESIGN-X BATTERYMODULEDESIGN-Y BATTERYMODULEDESIGN-Z

6. EV Battery: Pack Level Testing Monitoring Options R501 T301 O101 L201 OR OR OR FOExtensionCables–Bundled (this can go up to 100m long) OpticalFeedthrough(ultrasmallsize,needto know the total space available at each duct to determine the right part number) Key Benefits of Fiber Optic Temperature Sensors: Suitable for Air-Cooled and Water/Gel Cooled Batteries Faster response time for accurate Thermal Profiling Accurate and Noise Free readings with 100% Repeatability Sensors Stability: Electrically, Magnetically and Chemically stable Safety: Avoid Short-Circuit risk and protect Researchers and Test Environments FO sensor Cables Adjustable to place at different locations into cooling chamber Leak Proof up to 50bar Option for bundled sensors to optimize cable routing Coolant Chambers placed above and below the Battery Pack

7. Emobility Components Tested with Fiber Optic Sensors Battery and BMS Charging Plug Power Electronics HV Cables, Terminations and Joints EV Motors

8. Fiber Optic Temperature Solutions: Power Electronics • Power Electronics Testing: • Design Qualification • Vendor Evaluation • Performance Testing • Life Cycle Testing • Abuse Testing • EMC Testing • Major Thermal Challenges in Power Electronics • Identify sources of thermal stress in Power Electronics • Provide safe testing environment to Researchers / Testers • Precise thermal profiling of inverter • Understand the performance limits of Power Electronics • Fast and timely detection of faulty motors • Key Benefits of Fiber Optic Temperature Sensors: • Ultra small footprint for direct installation at MOSFETs, Capacitors & Junctions • Intrinsically safe sensors to fit directly at high voltage terminations • Accurate and Noise Free readings without any compensation requirement • Sensors with Rugged disposable tips for reuse • Sensors Stability: Electrically, Magnetically and Chemically stable • Safety: Avoid Short-Circuit risk and protect Researchers and Test Environments

9. Emobility Components Tested with Fiber Optic Sensors Battery and BMS Charging Plug Power Electronics HV Cables, Terminations and Joints EV Motors

10. Fiber Optic Temperature Solutions: Charging Plug/Points • Charging Plug/Point Testing: • Performance Testing • Design Qualification • Vendor Evaluation • Life Cycle Testing • Abuse Testing • EMC Testing • HV Cable and Terminations • Drivetrain Testing • EV Testing • End of Line (EOL) Testing Major Thermal Challenges in Charging Plug/Point Direct temperature measurement at charging point Accurate thermal profiling of Charging Plug Identify performance limits under fast charging scenario Select most effective cooling system for charging plug and onboard chargers Key Benefits of Fiber Optic Temperature Sensors: Ultra small footprint for direct installation at Charging Point Thermal profile characterization with intrinsically safe sensors Accurate and Noise Free readings Sensors Stability: Electrically, Magnetically and Chemically stable Safety: Avoid Short-Circuit risk and protect Researchers and Test Environments