Ceistíodh teicneolaíocht ceallraí ocsaíd cóbalt litiam
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.
Dúirt sé freisin toisc nach bhfuil an próiseas déantúsaíochta iomlán aibí fós, beidh an ráta toraidh de 21700 cadhnraí cineál Panasonic agus Samsung SDI níos ísle ná sin de chadhnraí 18650-cineál, cé nach bhfuil cumas leordhóthanach ag Múnla 3 mar gheall ar fhadhbanna cóimeála modúl ceallraí. , nó tá baint aige leis seo.
Tuairteanna Tesla arís
Bhuail an Tesla sa timpiste an bacainn ar dtús i lár an mhórbhealaigh, ansin bhuail sé an dara lána ar an bhfad clé, agus tar éis dó a bheith buailte ag Mazda sa lána sin, chríochnaigh sé ag tiomáint sa lána i bhfad ar chlé le Audi. Tharla imbhualadh ina raibh trí fheithicil. De réir patróil na bpóilíní tráchta áitiúla, tháinig an tSamhail X trí thine go tapa sular bhuail dhá fheithicil eile é.
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.
De réir na sonraí, is é Tesla an t-aon chuideachta charranna faoi láthair a úsáideann cadhnraí litiam ocsaíd cóbalt de chineál 18650. Tá an ceallraí thuasluaite 18mm ar trastomhas agus 65mm ar fad, agus is minic a úsáidtear é mar chill cheallraí do ríomhairí glúine. Ós rud é go bhfuil cadhnraí ian litiam ag druidim leis an tairseach cumhachta ag an gcéim seo, tá Tesla ag baint úsáide as na mílte cadhnraí chun eagar ceallraí a chruthú agus é a chur ar bhun an chairr mar chumhacht dá fheithiclí leictreacha. Mar sin féin, méadaíonn dearadh den sórt sin an fhéidearthacht go mbuailfear an t-eagar ceallraí nuair a imbhuaileann an fheithicil, rud a fhágann gur furasta na cealla nó na modúil a dhíláithriú, rud a fhágann go ndéantar na sreanga a úsáidtear go comhthreomhar a dhícheangal agus a ghearrchiorcad. agus sraith, a eascraíonn i dóiteáin.
Ina theannta sin, chun meáchan agus costas a laghdú, cuirtear an ciseal inslithe is forimeallaí den tsraith ceallraí 18650 de ModelS agus ModelX ar ceal freisin. Cé go n-éilíonn an chuideachta go bhfuil córas bainistíochta ceallraí den scoth aige, teicneolaíocht grúpála ceallraí, agus teicneolaíocht córas monatóireachta teochta tráthúil, léiríonn na tionóiscí go minic go bhfuil lochtanna nádúrtha an eagar ceallraí 18650 fós deacair a shárú.
Maidir leis seo, mhol Tesla gur chóir go leor uisce a úsáid chun an tine a chur amach tar éis don cheallraí dul trí thine, agus go bhfuil gá le ceamara íomháithe teirmeach fós chun monatóireacht a dhéanamh ar riocht na ceallraí laistigh de uair an chloig tar éis an ceallraí a bheith go hiomlán. fhuaraithe.
Ceistítear cobhsaíocht cadhnraí ocsaíd cóbalt litiam
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.
Maidir le Samhail 3, dúirt sé go bhfuil an ráta toraidh reatha de 18650 cealla Panasonic agus Samsung SDI go ginearálta os cionn 98 faoin gcéad, ach tar éis athrú go 21700 (eagar ceallraí in úsáid ag Samhail 3), beidh tionchar ag an ráta toraidh mar gheall ar an nach bhfuil an próiseas déantúsaíochta go hiomlán aibí fós. D’fhéadfadh baint a bheith ag an nganntanas toillte Múnla 3 a nochtadh le déanaí leis seo.
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.
