Solotec Scientific designs an enclosure for testing of lithium-ion battery cells for leading UK Electric Vehicle Manufacturer

The Challenge

The initial brief was to design and supply an enclosure for the testing of lithium-ion battery cells.

Lithium batteries are one of the most commonly used energy storage units today. Whilst they offer distinct performance advantages in comparison to other batteries cells, lithium batteries also present significant safety concerns that need to be addressed to ensure safety for the end users.

When a Lithium-ion cell reaches high temperatures or is subjected to over-charging, the

structure of metal oxides is destroyed which can result in high energy release, producing oxygen and the electrolyte fluid boils. This then produces highly flammable gas.

It was crucial that this enclosure must be able to withstand heat/fire/explosion and would be capable of being moved quickly in an emergency – should a battery fail

The cabinet also needed to provide good visibility and be capable of being designed to allow monitoring using test equipment.

The Solotec Solution

Initially, our skilled in-house team began a design for the enclosure, however it was then discovered the batteries were 30Kg in weight, and with this information in mind we went back to the drawing board to re-design.

The final design was constructed from a welded stainless-steel frame, with fire/impact resistant polycarbonate clear panels all round for visibility, lockable end doors and two grab handles for emergency removal, meeting and exceeding the customers requirements.

Cable access tidies were added for test equipment leads and we upgraded the doors to a thicker polycarbonate for durability.

The completed unit (1000 x 600 x 500mm (w x h x d) was delivered on time to the client’s site, with a positive response and feedback and the customer quoting ‘it looks great’.

From initial design to delivery, this project was completed within 4 weeks.