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AUTOMOTIVE ELECTRONICS FEATURE AVOID OVERHEATING A (W/m2


spects like an increasing power density or higher heat flow per area ) lead to an increased component


E


temperature, and consequently, to a reduced lifetime in the application. Efficient thermal cooling of electrical components, through the connection of the heat source to the heat sink, while at the same time having an electrically insulating effect, is therefore a prerequisite for cars at present. This connection, and the levelling of appropriate component tolerances, gaps or air inclusions can be realised individually by the wide range of thermal interface materials available from Kerafol, depending on the requirements for thermal conductivity (W/mK) and desired temperature difference ∆T. The change to electric drive systems implies new challenges in thermally managing an application, such as the functional relationship between the


The definitive use of electronics within contemporary cars has strengthened the argument for superior thermal management, to avoid potentially life- threatening failures


The thermal connectivity and cooling of electrical components integrated within cars is essential. Kerafol looks at the precautions that an automotive OEM can take


operating temperature of a battery stack and its maximum, achievable number of cycles. To quantify this, Kerafol understands that a reduction in operating temperature by ten degrees Celsius doubles the lifetime of the battery cells. Electric vehicle’s (EV) net reach is dependent not just on this, but the operating temperature of the battery itself, and any present thermal cooling. Kerofol’s cross-linked silicone-based elastomers, better known as Softtherm Gap Pads, can play a crucial role in the thermal cooling of electronic components (power ranges up to 6W/mK), due to their specifically adjustable properties.


WHAT DO SOFTTHERM PADS OFFER? Because of the flexibility and mechanical resistance of the Softtherm Pads, large gap dimensions, as well as


high component tolerances, can be compensated. Compared to systems based on polyurethane or epoxy, silicon- containing pads or tapes can absorb and compensate vibrations much better. In addition to individual solutions, such as one-sided adhesive coating for component fixation or fibreglass reinforcement to increase mechanical stability, two-layer films (required by specific regulations) can also be of great added value to the customer. Then there’s the reproducible quality of the die-cut parts. Therefore, Kerafol cooperates with a specialist in the UK, the company Thermal Issues; samples are available next day and without additional cost for tooling.


Kerafol www.kerafol.com


Announcing our new partnership… with Kerafol – bringing German technology to the world


Announcing our new partnership… Thermal Issues are proud to be working in collaboration


Hiig Pe form High High Performance, Higigh Effi rforma e, gh Efficienc ff ficieiency


Rapid delivery of parts to enhance performance of: - Battery Management Systems - Electric Motors - Invertors - Intelligent Controls - Aerospace Instalments


Next day samples for fit/form/functional testing thermal management - electrical isolation - IP67 gaskets - double sided tapes - anti vibration pads www.tiltd.net www.tiltd.net


+44 (0) 1858 43 11 33 sales@tiltd.net


+44 (0) 1858 43 11 33 sales@tiltd.net


/ ELECTRONICS ELECTRONICS | MARCH 2020 9


Thermal Issues are proud to be working in collaboration with Kerafol – bringing German technology to the world of thermal interface materials. This adds a fantastic new dimension to our range of materials from Bergquist, Laird, Chomerics, Dupont and Rogers.


of thermal interface materials. This adds a fantastic new dimension to our range of materials from Bergquist, Laird, Chomerics, Dupont and Rogers.


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