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Design007-Oct2021

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62 DESIGN007 MAGAZINE I OCTOBER 2021 Shaughnessy: at will work fine. So, what is the title of the person who usually makes this decision? Kolar: At Monsoon, it was once our COO, as he ran design. We now have one of our princi- pal designers in a role to direct and document all design processes. It is all done with input from the whole team including me, as well as our director of manufacturing services, if there is a question of the impact on manufac- turing. Shaughnessy: Sometimes I wonder if this whole "horse race" angle regarding Gerber vs. ODB++ vs. IPC-2581 is a little overblown. e systems seems to be working fine with three different formats. Are there any inherent downsides to having more than one format for design data transfer in the industry? Kolar: I don't see an issue with having more than one format, other than the risk of trans- lation errors. But, hey, it's not a CAD tool if it doesn't have errors. e convenience of ODB++ is awesome. But for some companies without ODB++ viewers, or for people who are not familiar with them, Gerbers are just simpler. Shaughnessy: is really helpful. anks for your time, Jen. Kolar: Sure. ank you, Andy. DESIGN007 build-up of lithium deposits known as dendrites (tiny wire-like tendrils) that cross the separator between the positive (cathode) and negative (anode) elec- trodes of the battery when it is being charged, caus- ing a short-circuit leading to an uncontrolled chemi- cal fire. To prevent such battery fires, NTU scientists invented a patent-pending "anti-short layer" that can be easily added inside a Li-ion battery, prevent- ing any future short-circuits from occurring during the charging process. This concept is akin to adding a slice of cheese to a hamburger's meat patty in between the buns, thus the new "anti-short layer" can be rapidly adopted in current battery manufacturing. (Source: NTU Singapore) Materials scientists from NTU Singapore have found a way to prevent internal short-circuits, the main cause of fires in lithium (Li)-ion batteries. Billions of Li-ion batteries are produced annually for use in mobile phones, laptops, personal mobile devices, and the huge battery packs of electric vehi- cles and aircraft. This global battery demand is set to grow, with electric vehicles alone requiring up to 2,700 GWh worth of Li-ion batteries a year by 2030, equivalent to some 225 billion mobile phone batteries. Even with an estimated failure rate of less than one in a million, in 2020 there were 26 power-assisted bicycle (PAB) fires and 42 cases of personal mobility device fires in Singapore. In most Li-ion battery fires, the cause is due to a New Tech Prevents Li-Ion Battery Fires Jen Kolar

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