Nove baterije čine da električni automobili zimi više ne leže u gnijezdu
Električna vozila sa svim-klimatskim baterijama bit će predstavljena na Zimskim olimpijskim igrama u Pekingu. Performanse i dugovječnost ove nove baterije u potpunosti su potvrđene u terenskim testovima voznog parka koji su se provodili u teškim hladnim regijama tijekom tri godine.
"The problem of low temperature resistance of lithium-ion batteries has been solved." This battery technology comes from Wang Chaoyang, an academician of the National Academy of Inventors. He is a technical scientist for power lithium-ion batteries, energy storage and fuel-powered lithium batteries. On November 6, Wang Chaoyang pointed out at the Tencent WE Conference that energy storage technology is a key core technology to achieve the "dual carbon" goal and energy revolution, and has great strategic significance.
Akademik Nacionalne akademije izumitelja, Wang Chaoyang, tehnički znanstvenik energetskih litij{0}}ionskih baterija, pohranjivanja energije i litij baterija za pogon goriva.
Fotografija ljubaznošću Tencent WE konferencije
Baterije su posvuda, a nove tehnologije baterija često postaju ključ uspona novih industrija. Međutim, u 200 godina struktura baterije nije se puno promijenila. Sastoji se od tri materijala: materijala negativne elektrode, materijala pozitivne elektrode i elektrolita koji ih razdvaja. Ova struktura prirodno tvori dva sučelja: jedno postoji između materijala katode i elektrolita, a drugo između materijala anode i elektrolita. Između dva sučelja postoji razlika potencijala, što daje napon baterije.
"Whether we are using the battery or not, the reaction interface in the battery has been working diligently and actively." Wang Chaoyang said, this is also the root cause of the battery's safety hazards and aging.
Litij{0}}ionske baterije jako se boje hladnoće, a električna vozila zimi mogu ležati: domet krstarenja je skraćen i teško se puni.
Sam materijal baterije ne može zadovoljiti ni visoku aktivnost niskih temperatura ni stabilnost visoke temperature. Inženjeri trebaju dodati sustav upravljanja toplinom u bateriju kako bi osigurali sigurnost baterije. Kao rezultat toga, bit će dodana dodatna težina baterije, volumen i cijena.
Postoji li vrsta baterije koja može isključiti reakcijsko sučelje kada ne radi na poboljšanju sigurnosti; kada radi, povećati sučelje i pojačati intenzitet kako bi se dobila potrebna velika snaga?
Wang Chaoyang's team has been looking for and exploring such batteries with tunable interfaces.
Stvorili su sve{0}}klimatsku bateriju koja je objavljena u časopisu Nature. Bez povećanja zapaljivosti elektrolita ili promjene toplinske stabilnosti materijala elektrode, ugradili su 10-mikrona debelu nikalnu foliju unutar baterije kao grijaći element. Koristeći energiju koja dolazi s baterijom, plus prekidač, aktivnost baterije može se podesiti po želji. Čak i ako je baterija zamrznuta u okruženju od minus 30 stupnjeva, potrebno je samo 30 sekundi da se zagrije na iznad nule i normalno radi.
Ova tehnologija je usvojena na Zimskim olimpijskim igrama u Pekingu 2022. i postala je jedna od ključnih tehnologija za vožnju olimpijskih električnih vozila.
Add a piece of nickel foil, sounds like a pretty easy way. Wang Chaoyang told the Science and Technology Daily reporter that there is a tortuous exploration process behind it. The team has tried various methods and various materials: some have poor safety, some have low energy conversion efficiency, and some are very beautiful in the laboratory, but they still cannot be industrialized..." After 20 years For many years, my own feeling is that simplicity is beauty. Scientific discoveries with real practical value are ultimately the ultimate simplicity." Wang Chaoyang said with emotion, "Innovation requires persistence and perseverance. For so many years, our team has been tracking batteries and energy storage. The problem."
Based on the principle of thermal regulation, the team also invented a 10-minute fast-charging battery. Wang Chaoyang believes that the application and promotion of 10-minute fast-charging batteries is an important milestone in the development of electric vehicles—quick energy replenishment can free electric vehicle owners from mileage anxiety.
Wang Chaoyang's dream is to take a flying car to work before retiring. He pointed out that the biggest technical problem in flying cars is the battery. The requirements for the battery of a flying car are quite high, and it must quickly replenish the battery immediately after each landing. "Our experiments so far have demonstrated the feasibility and economy of a 10-minute fast-charging battery for flying cars."
In fact, fast battery charging and high energy density are both major scientific problems. Wang Chaoyang believes that the real solution should be peer-reviewed, published in a scientific journal, and verified by a third party to be repeatable, and then the market will provide a mass production method. "This is reliable." He emphasized that batteries and energy storage are one of the most important basic technologies in the new energy era and smart society, and will usher in huge innovation opportunities in the next decade.
