Donaldson’s new Twin-Stage Jet battery vent takes degassing charges to unmatched ranges whereas decreasing value and complexity for OEMs

The distinctive medium-pressure design ejects the poppet and cap to supply a bigger opening for gasoline to flee throughout an emergency scenario, boosting security and decreasing the chance of harm to different battery packs. It’s so environment friendly, it could possibly cut back the variety of vents required on a battery pack by as much as 90%.

Donaldson has prolonged its vary of battery venting programs with the Twin-Stage Jet, a brand-new design that takes electrical car (EV) security to a complete new stage by providing the {industry}’s quickest degassing capabilities, whereas streamlining the set up course of for OEMs. Launched this week at The Battery Present in Stuttgart, Germany, Twin-Stage Jet has been purposely designed to satisfy the elevated calls for of at this time’s extra advanced and highly effective batteries – from offering enhanced strain equalisation and ingress safety underneath regular working situations to permitting gases to flee at charges of roughly 100 lit/sec @ 100 mbar when crucial.

“Clients had been telling us that they wanted even increased degassing charges than what was accessible available on the market, so the Donaldson Automobile Electrification Growth engineering group got here up with a novel, artistic design the place the poppet and cap will be jettisoned to immediately produce a a lot bigger opening for gasoline to flee and assist mitigate thermal runaway,” explains Shane Campbell, Product Supervisor for Automobile Electrification at Donaldson. “The strain then quickly decreases contained in the pack, enormously decreasing the chance of harm to extra cells and giving occupants further time to flee from the car.”

Tailor-made to OEM wants

Twin-Stage Jet is offered in two distinct configurations – screw-in/bolt-on or quarter-turn bayonet fittings. Agricultural and different heavy-duty car producers are more likely to favour the previous, which might supply extra flexibility to be used in bulkier battery packs, whereas the lighter bayonet fittings can be of higher enchantment to the automotive sector and supply clear haptic suggestions of correct set up.

The brand new vent is now accessible for car producers, with the likelihood for them to work on additional customising the design to their exact wants in partnership with Donaldson’s personal software engineers. “Our prospects usually have totally different thicknesses of aluminium for his or her battery pack housing, nevertheless it’s straightforward for us to make an nearly similar half that has a small change within the leg size when required,” says Matt Goode, Engineering Supervisor – Automobile Electrification Growth, Donaldson.

“The choice of a number of attachment strategies is vital to our prospects, who need one thing that integrates actually simply with their present pack, and with software engineers all around the globe, we’re positioned close to the OEM wherever they could be. I feel our prospects discover it refreshing that we take the time to grasp their true wants after which discover one of the best answer for them, reasonably than an ‘off-the-shelf take it or depart it’ sort of method.

“One other main profit is that these high-performance vents can cut back the quantity required on a battery pack by 50-90%,” continues Matt. “In addition to decreasing product value, this additionally results in important money and time financial savings within the meeting, ordering and stock-keeping processes.”

Efficient air flow means environment friendly efficiency

At 58mm in diameter, and containing roughly 20% recycled plastic, the vent additionally delivers a easy answer to the often difficult downside of performing a leak check on a product expressly designed to supply efficient air flow. Quickly sealing the vent utilizing the provided leak-check cap is all that’s required for producers to hold out assessments themselves.

Utilizing Donaldson’s proprietary Tetratex expanded polytetrafluoroethylene (ePTFE) membranes for enhanced safety from contaminants, the Twin-Stage Jet allows constant strain equalisation with a minimal airflow of 97 lit/hr @ 10 mbar throughout regular operation. Manufactured in-house, the hydrophobic membrane is comprised of small, randomly linked fibrils that create a permeable water barrier, offering steady strain equalisation, whereas providing IP67, IP68 and IP69K ingress safety in opposition to water, dust, and different contaminants. The membrane’s distinctive oleophobic therapy additionally helps the filter media repel oils, offering extra safety.

By guaranteeing that damp air, which might in any other case accumulate contained in the battery housing, is expelled, the efficient air flow supplied by the brand new vent thereby helps to forestall potential inner condensation points decreasing the lifespan of enclosures and batteries alike.

“High quality and reliability are prime of our prospects’ agenda, and our new vent actually matches the invoice,” concludes Shane. “Twin-Stage Jet is a unbelievable addition to our portfolio; one that permits us to serve extra of the worldwide EV market by offering one other best-in-class product whereas providing our prospects even higher option to match their particular purposes. Our Twin-Stage Burst design remains to be accessible, with a excessive opening strain [25 lit/sec @ 300 mbar] whereas Twin-Stage Jet occupies the medium-pressure part of our portfolio – facilitating industry-leading degassing airflow via a design that’s by no means been seen till now.”