Lityum kobalt oksidi batareyasi texnologiyasi so'roq qilindi
Following the fatal traffic accident of Uber's self-driving test car due to the failure of the self-driving system, a Tesla Model X in California, United States, exploded after a traffic accident. The owner of the car died of his injuries after being taken to the hospital.
Insiders told reporters that Tesla's good-looking data on performance and mileage can be said to be achieved on the premise of radical technology. He said that during the use of Tesla's 18650 battery, as long as there is a slight inconsistency in the battery array, a circulating current will form inside the battery pack, causing self-discharge and greatly increasing the loss of the battery.
Shuningdek, u ishlab chiqarish jarayoni hali to‘liq etuk bo‘lmaganligi sababli, Panasonic va Samsung SDI’ning 21700 tipidagi akkumulyatorlarining ishlab chiqarish darajasi 18650 tipidagi akkumulyatorlardan past bo‘lishini, 3-model esa akkumulyator modulini yig‘ish muammolari tufayli yetarli quvvatga ega emasligini aytdi. , yoki bu bilan bog'liq.
Tesla yana qulab tushdi
Voqea sodir bo‘lgan Tesla avvaliga katta yo‘lning o‘rtasidagi to‘siqqa borib urilgan, so‘ng chap tarafdagi ikkinchi bo‘lakka borib urilgan va o‘sha bo‘lakda Mazda tomonidan urilganidan so‘ng Audi bilan eng chap bo‘lakda harakatlangan. Uchta avtomobil ishtirokida to‘qnashuv sodir bo‘lgan. Mahalliy yo‘l harakati politsiyasi patrul xizmati ma’lumotlariga ko‘ra, ishtirok etgan Model X tezda yonib ketgan va boshqa ikkita mashina urib ketgan.
According to the reporter's understanding, the Model X was severely damaged after the incident, the front of the car was completely destroyed, and only the frame was burned. With so many of the car's batteries exposed after the accident, road crews couldn't immediately clear the debris from the road, so the CHP called in engineers from Tesla to evaluate the batteries.
Maʼlumotlarga koʻra, Tesla hozirda 18650 turdagi kobalt oksidli litiy{1}}ionli akkumulyatorlardan foydalanadigan yagona avtomobil kompaniyasi hisoblanadi. Yuqorida aytib o'tilgan{2}}batareya diametri 18 mm va uzunligi 65 mm bo'lib, ko'pincha noutbuklar uchun batareya xujayrasi sifatida ishlatiladi. Lityum{5}}ionli batareyalar ushbu bosqichda quvvat chegarasiga yaqinlashayotganligi sababli, Tesla akkumulyatorlar qatorini hosil qilish va uni elektr transport vositalari uchun quvvat sifatida avtomobilning pastki qismiga joylashtirish uchun minglab batareyalardan foydalanmoqda. Biroq, bunday dizayn avtomobil to'qnashganda akkumulyatorlar qatoriga urilish ehtimolini oshiradi, bu esa o'z navbatida hujayralar yoki modullarning osongina o'zgarishiga olib keladi, natijada parallel ravishda ishlatiladigan simlarning uzilishi va qisqa{6}}tushilishiga olib keladi. va seriyalar, natijada yong'in.
Bundan tashqari, vazn va narxni pasaytirish uchun ModelS va ModelX 18650 akkumulyator majmuasining eng tashqi izolyatsion qatlami ham bekor qilingan. Kompaniya akkumulyator batareyalarini boshqarishning mukammal tizimi, batareyalarni guruhlash texnologiyasi va haroratni o'z vaqtida monitoring qilish tizimi texnologiyasiga ega ekanligini da'vo qilsa-da, tez-tez sodir bo'lgan baxtsiz hodisalar 18650 batareyalar qatorining tabiiy nuqsonlarini bartaraf etish hali ham qiyinligini ko'rsatadi.
Shu munosabat bilan Tesla akkumulyator yonib ketganidan keyin yong‘inni o‘chirish uchun ko‘p miqdorda suv ishlatish kerakligini va akkumulyator to‘liq bo‘lganidan keyin bir soat ichida batareyaning holatini kuzatish uchun hali ham termal tasvir kamerasi talab qilinishini taklif qildi. sovutilgan.
Lityum kobalt oksidli batareyalarning barqarorligi so'roq ostida
In fact, as early as April last year, a Model X caught fire and exploded after a collision accident in Guangzhou, causing serious damage to the vehicle. At that time, the owner questioned the quality of the Tesla Model X vehicle itself; at the beginning of this year, another Tesla spontaneously ignited because of the battery. So, why does the battery technology, which is Tesla's core competitiveness, have repeated accidents?
Industry insiders told reporters that Tesla's good-looking data on performance and mileage can be said to be obtained under the premise of radical technology. He said that although the consistency of Tesla's 18650 batteries was stable in the initial stage, during use, the battery array must have inconsistent battery attenuation. Any slight inconsistency can create circulating currents inside the battery pack, causing self-discharge and greatly increasing battery wear.
3-model haqida gap ketganda, u Panasonic va Samsung SDI-ning 18650 ta yacheykalarining joriy rentabellik darajasi odatda 98 foizdan yuqori ekanligini aytdi, ammo 21700 ga o'tgandan so'ng (3-model tomonidan ishlatiladigan batareyalar qatori), rentabellik darajasiga ta'sir qiladi, chunki ishlab chiqarish jarayoni hali to'liq etuk emas. Yaqinda ma'lum bo'lgan Model 3 sig'imining etishmasligi shu bilan bog'liq bo'lishi mumkin.
Previously, Tesla said the main production limiting factor for the Model 3 was battery module assembly. Musk said there were four "regions" in battery module production for the Model 3, one of which was particularly problematic. According to reports, a Tesla employee who had worked in the Gigafactory broke the news that as recently as mid-December last year, parts of Model 3 battery production were still done manually.
