Kapton® films are known to retain their functions such as insulation, flame barrier, heat conduction or partial discharge resistance for an extremely long time in harsh industrial and automotive environments.
The high temperature resistance up to 350°C enables an excellent service life at moderate temperatures, the chemical resistance predestines polyimide film for use with aggressive chemicals (operating fluids in the vehicle) and extreme loads (- 80°C to well over 200°C).
Kapton® polyimide films improve the reliability of vehicle systems and avoid, for example, follow-up costs or the risk of image damage due to premature failures. Together with thermally conductive coatings from CMC Klebetechnik, there are many different options for thermal management and thus for extending the service life of assemblies such as charging electronics, power converters, power electronics and lithium-ion batteries.
Possible applications of Kapton® films in vehicles:
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Electrical insulation in devices such as the On Board Charger (OBC), the Battery Junction Bock (BJB), the Cell Supervising Circuit (CSC), the Battery Management System (BMS) or the various DC/DC inverters for voltages below the high-voltage battery level (e.g. 48VDC, 12 VDC and 5 VDC), step-up/step-down converter
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Electrical insulation within the battery (e.g. terminal lugs, housing, CSC versus busbars)
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Flame barrier inside the battery housing (traction battery)
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Thermally conductive insulation for high-performance electronics (on-board charger, frequency inverter for the drive motor)
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Insulation in the charging unit and the power supply line
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Insulation in the electric motor and the motor control unit
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As part of a BTMS (battery thermal management system), for example Tesla's cooling tube, which has ideal thermal contact with good electrical insulation to the round cells in the battery pack thanks to Kapton® insulation and a thermally conductive coating.
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Other high-voltage components such as air conditioning compressors, auxiliary heaters, heat pumps
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for the thermal connection of SuperCaps for a longer service life
CMC Klebetechnik offers a wide variety of different Kapton® polyimide films for different applications.
As a coater, we are able to apply almost any type of coating and then cut and punch the material. This means that assembly processes can be automated at the customer's premises with appropriately prepared punched parts.
Kapton® for E-Mobility