Nouvo pil fè machin elektrik yo pa kouche nan nich la nan sezon fredi
Yo pral devwale machin elektrik ak tout-pil klimatik nan Je Olenpik ivè Beijing yo. Pèfòmans ak lonjevite nouvo batri sa a te konplètman verifye nan tès flòt jaden ki fèt nan rejyon frèt grav pou twa ane.
"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.
Akademisyen Akademi Nasyonal Envantè a, Wang Chaoyang, yon syantis teknik nan pil ityòm -iyon pouvwa, depo enèji ak pil ityòm pouvwa gaz.
Koutwazi foto Tencent WE Conference
Batri yo tout kote, ak nouvo teknoloji batri souvan vin kle nan ogmantasyon nan nouvo endistri yo. Sepandan, nan 200 ane, estrikti batri a pa chanje anpil. Li konsiste de twa materyèl: yon materyèl elektwòd negatif, yon materyèl elektwòd pozitif, ak yon elektwolit ki separe de la. Estrikti sa a natirèlman fòme de interfaces: youn egziste ant materyèl la katod ak elektwolit la, ak lòt la se ant materyèl la anod ak elektwolit la. Gen yon diferans potansyèl ant de interfaces yo, ki bay vòltaj batri a.
"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.
Batri ityòm-ion yo pè anpil frèt, epi machin elektrik yo ka kouche nan sezon fredi: ranje kwazyè a vin pi kout epi li difisil pou chaje.
Materyèl batri a tèt li pa ka satisfè tou de aktivite tanperati ki ba ak estabilite tanperati ki wo. Enjenyè yo bezwen ajoute yon sistèm jesyon tèmik nan batri a pou asire sekirite batri a. Kòm yon rezilta, yo pral ajoute pwa batri adisyonèl, volim ak pri.
Èske gen yon kalite batri ki ka fèmen koòdone reyaksyon an lè li pa travay pou amelyore sekirite; lè li ap travay, ogmante koòdone a ak ogmante entansite a bay pouvwa ki nesesè yo segondè?
Wang Chaoyang's team has been looking for and exploring such batteries with tunable interfaces.
Yo te kreye yon batri tout-klima, ki pibliye nan jounal Nature. San yo pa ogmante enflamabilite elektwolit la oswa chanje estabilite tèmik materyèl elektwòd la, yo te implanté yon papye nikèl 10-mikwòn epè andedan batri a kòm yon eleman chofaj. Sèvi ak enèji ki vini ak batri a, plis yon switch, aktivite batri a ka ajiste nan volonte. Menm si batri a jele nan yon anviwonman mwens 30 degre, li sèlman pran 30 segonn pou chofe tèt li pi wo a zewo epi travay nòmalman.
Teknoloji sa a te adopte pa 2022 Beijing Winter Olympics yo e li te vin youn nan teknoloji debaz yo pou kondwi machin Olympic elektrik.
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.
