TEMPERATURE MEASUREMENT

Battery Production and Development

• It is no secret that e-cars and battery manufacturers are growing inexorably across all industries. Likewise, the risk of a fire breaking out is increasing. Lithium-ion batteries are the most effective batteries in the world, but also the most dangerous. Once a li-battery has ignited it is almost impossible to extinguish confirm fire stations worldwide.

EV Battery Production and Development

Battery Cooling System Quality Control

• In the induction process, the battery housing is heated to approx. 80 °C, then the cooling is bonded, checked and leak tested.
• The leak test can only cover a temperature delta of a maximum of 10 °C (test item temperature – room temperature). The cooling system is controlled by an optris infrared camera and a pyrometer, cooling the component to a temperature delta of 0…5°C. (PI 400i, CT LT)
• More information: https://avidtp.com/what-is-the-best-cooling-system-for-electric-vehicle-battery-packs/

Global Lithium-Ion Battery Production

• Source: https://energycentral.com/c/ec/world-battery-production
• Battery future: https://ark-invest.com/sustainable-investing/the-battery-is-key-to-a-sustainable-future/

Integration of Cells to Modules

Temperature measuring after every step

Challenges

• Shiny surfaces (reflection)
• No measurement

Solution measuring temperature

• at the non reflective label
• at insulation of power connectors (anode, cathode)

• Small insulators resulting in small measurement area (high resolution camera PI 640)

Detection of Short Circuits

• Automated alarm after detection
• Detection of defect cells and packs

• Thermal imaging cameras monitor the first charging process of batteries. These provide an insight into the temperature distribution and possible short circuits. The hot-spot detection feature automatically recognizes and outputs deviations from the target temperature. The compact thermoIMAGER camera can be integrated quickly and easily into existing environments.
• https://www.micro-epsilon.com/applications/branch/batterie/temperaturueberwachung-erstaufladung/

Laminating of Interior

Controlling Temperature

• Vehicle interiors are partly equipped with different surface decors during a laminating process. This process takes place at around 120°C – the decor temperature is controlled and optimized during this time. All devices can additionally be equipped with an air purge collar as well as a protective housing.

Process Temperature

• 110 °C to 230 °C

Thermoforming of Exterior Parts

Constant Temperature Monitoring

• The greatest challenge for the production process of automotive exterior parts is to secure a constant temperature monitoring.
• Even in the pilot production, a continuous temperature measurement is essential to optimize the process and maximize both quality and output of the serial production.

Process Temperature

• 110 °C to 230 °C

Vehicle Defect Analysis

Quickly Locate and Fix Hot Spots

• The Optris portable thermometers alleviate vehicle inspections. Defects at brakes, heating systems or air conditions can therefore be localized. Due to this fast process, more time will remain for the error recovery.
• Engineers are now able to quickly locate and fix hot spots in efficient time – whether during the vehicle inspection or on a race track. Exchanging expensive components for checking purposes is not very effective.