Cén fáth a n-úsáideann daoine leictreacha nua fuinnimh 18650 cadhnraí
Is ceallraí ian litiam luath, aibí agus cobhsaí é ceallraí 18650, a úsáidtear go forleathan i dtáirgí leictreonacha. Thar na blianta, tá go leor taithí ábhartha carntha ag monaróirí na Seapáine sa phróiseas táirgthe 18650 cadhnraí, ionas go mbeidh comhsheasmhacht agus sábháilteacht na gcadhnraí 18650 a tháirgtear tar éis ardleibhéal a bhaint amach.
I gcodarsnacht leis sin, tá cadhnraí litiam ian cascáideacha i bhfad ó aibí, cadhnraí cearnacha coitianta, cadhnraí pacáiste bog, fiú mura bhfuil méid, méid agus suíomh na gcluaisíní aonfhoirmeach, ní féidir le próiseas táirgthe na monaróirí ceallraí freastal ar an méid. coinníollacha, agus an chuid is mó den rialú láimhe, Is é comhsheasmhacht na ceallraí nach bhfuil an ceallraí ag leibhéal na 18650. Ní cheadóidh bainistiú líon mór cealla i sraith agus comhthreomhar le gach cill feidhmiú níos fearr má tá comhsheasmhacht na gcealla. ní suas go dtí par, agus is féidir le cill 18650 an fhadhb seo a réiteach.
To sum up, the 18650 battery has a small capacity and a large number of cells (7104 for the S type), but the consistency is good. Cascade cells can be increased (20ah 60ah), and the number of cells can be decreased, but the consistency is poor. In contrast, it is very difficult to invest a lot of manpower and material resources with battery suppliers to improve the production process of cascaded batteries. So when it comes to developing the Roadster and Model S, Tesla's only option is to buy batteries from the market and develop its own battery system. The technical challenge of developing a battery system that manages more than 6,000 units with good consistency should be less than that of more than 200 units with poor consistency. Even if the number of individual batteries increases, it will be easier to manage if they perform reliably.
