Filtration specialist Donaldson makes a variety of battery venting techniques—security techniques designed to permit gases to flee from an EV battery pack throughout an emergency scenario.
Launched on the latest Battery Present in Germany, the corporate’s Twin-Stage Jet is a brand new design that gives enhanced stress equalization and ingress safety underneath regular working circumstances to permit gases to flee at charges of roughly 100 liters/second at 100 mbar when mandatory. In line with Donaldson, the brand new system is so environment friendly, it may well scale back the variety of vents required on a battery pack by as much as 90%.
“Prospects have been telling us that they wanted even increased degassing charges than what was obtainable in the marketplace, so the Donaldson Car Electrification Growth engineering workforce got here up with a novel, inventive design the place the poppet and cap might 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 Car Electrification at Donaldson. “The stress then quickly decreases contained in the pack, enormously decreasing the danger of injury to extra cells and giving occupants further time to flee from the automobile.”
Twin-Stage Jet is obtainable in two distinct configurations—screw-in/bolt-on or with quarter-turn bayonet fittings. Agricultural and different heavy-duty automobile producers are seemingly to decide on the previous, which may supply extra flexibility to be used in bulkier battery packs, whereas the lighter bayonet fittings are appropriate for the automotive sector, and supply clear haptic suggestions of correct set up.
“The choice of a number of attachment strategies is necessary 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 might be,” says Matt Goode, Engineering Supervisor for Car Electrification Growth at Donaldson.
Car producers can customise the design to their exact wants in partnership with Donaldson’s software engineers. “Our prospects typically have completely different thicknesses of aluminum for his or her battery pack housing, but it surely’s straightforward for us to make an nearly similar half that has a small change within the leg size when required,” says Goode.
The vent is designed to supply a easy resolution to the difficult downside of performing a leak take a look at on a product expressly designed to supply efficient air flow. Briefly sealing the vent utilizing the equipped leak-check cap is all that’s required for producers to hold out assessments themselves.
“High quality and reliability are prime of our prospects’ agenda, and our new vent actually matches the invoice,” says Shane Campbell. “Twin-Stage Jet permits us to serve extra of the worldwide EV market by providing our prospects even larger option to match their particular functions. Our Twin-Stage Burst design continues to be obtainable, with a excessive opening stress (25 liters/second at 300 mbar), whereas Twin-Stage Jet occupies the medium-pressure part of our portfolio.”
Supply: Donaldson
