Wevo silicones support the battery market 18 August 2021

WEVO-CHEMIE GmbH has developed several silicone-based products especially for use in the battery systems produced by SAFT Groupe S.A, meeting ATEX requirements and moreover offering UL94 V-0 approval as well as excellent thermal mitigation properties.

The areas with higher explosion risks are manifold. Potential applications include environments with flammable mediums or the release or creation of flammable gases and vapour – from paint spraying or fuel and chemical handling stations to workplaces handling fine organic dust, such as wood or paper pulp. Intended to ensure the safety and protection of employees, the ATEX Directives are a set of standards within the European Union for materials and components used in these environments with the goal of lowering the risk of working with equipment used in explosive atmospheres.

The French manufacturer of batteries and accumulators, SAFT Groupe, a company of TotalEnergies SE, uses WEVOSIL 22006 FL to fulfil the stringent requirements associated with its innovative battery systems and enable their use in environments where ATEX approval is needed. The Wevo product fulfils different purposes in the production process – including potting and encapsulating various electronic components or the whole battery unit.

WEVOSIL 22006 FL combines several universal properties, making it suitable for all kinds of applications in the battery field - low viscosity for optimal filling of small cavities and fast filling, low Shore hardness for damping effect, and good mechanical and electrical insulation properties. Moreover, the product not only offers excellent thermal mitigation properties, it is also UL94 V-0 approved and thus plays a large part in ensuring that the battery system meets ATEX requirements.

WEVOSIL 22006 FL is one in a series of Wevo’s multi-functional, universal potting materials with added values for various applications. Wevo’s range of silicone systems have undergone verification for many applications and special requirements. These needs expand beyond the requirements of thermal conductivity alone but also towards battery thermal management, thermal runaway and mitigation – the solutions combine high thermal conductivity with low density and good mechanical performance. Silicones from Wevo are available as low viscosity materials for encapsulation or thixotropic materials for potting or gap fill.

Wevo’s continuous product development addresses future applications in the field of fuel cells, flow batteries, ultracapacitors, electric machines and other high power electronics within the energy, e-mobility and industrial fields.

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889

Having joined the magazine in 2012, Claire developed her knowledge of the industry through the numerous company visits, exhibitions and conferences she attended both in the UK and abroad.

Claire prides herself on keeping readers well informed and up to date with the latest industry news.