The Grid 11 BATTERIES Rolling out a solid-state battery assembly line Ilika in the UK is building a roll-toroll production line for solid-state battery cells, writes Nick Flaherty. The company has been working with the UK Battery Industrialisation Centre (UKBIC) to scale up the production equipment for the line, and with Mpac on the development of its solid-state battery cells. Ilika has already shipped its first batch of 2Ah P1 prototype Goliath batteries to e-mobility customers and released validated safety data for its D5 development cells. The company is working on a 10 Ah solid-state battery cell, the D6, which is currently undergoing testing. The trials are providing evidence that large-format solid-state battery cells can be produced with the types of mixing and coating equipment widely used in existing gigafactories. Ilika is working closely with Mpac on completing the fabrication and testing of a 1.5 MWh solid-state battery assembly line, capable of delivering Ilika’s Goliath prototype, large-format pouch cells to automotive OEMs and Tier 1 suppliers. The solid-state battery assembly line is on track to be fully operational at Ilika’s facility by the middle of this year. Metal rupture discs offer robust relief The rupture discs provide fast, reliable and accurate emergency pressure relief where outgassing and pressure equalisation can be funnelled though a single device. Each disc can be supplied with different mounting arrangements to suit a specific battery or enclosure design via a bespoke service that considers the components, cells, packs and enclosures. “We appreciate the unique design challenges presented by the need to conserve space while ensuring safety,” said Travis Nester, vice-president of sales and marketing. “OE Lion actively supports this market with customisable solutions, designed to deliver accuracy and reliability with a minimal footprint.” COMPONENTS E-Mobility Engineering | March/April 2025 Roll-to-roll processing (Image courtesy of Ilika) A rupture disc (Image courtesy of OsecoElfab) OsecoElfab has developed a family of pressurerelief systems for lithium ion battery applications for heavy-duty, offroad e-mobility applications, writes Nick Flaherty. The low-profile, specialised, metal rupture discs support custom battery design to improve safety. They provide robust emergency relief and pressure equalisation in a single device in the event of outgassing by the battery cells. The low burst pressure of 2 psi improves the ability to control and disperse flammable gases through a single vent, measuring 25.4 mm (1 in) to 304.8 mm (12 in), depending on the size of the pack. Having a single rupture vent simplifies the assembly of the battery enclosure and enables a simpler, less expensive design. There is an optional, breathable membrane that allows air and other gases to move in and out of the enclosure for ongoing pressure equalisation. This prevents a build-up of gases and pressure, and guards against any swelling or contracting of the enclosure.
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