Dave explains why Tesla have switched from a 2170 cell to a bigger 4680 cell announced at Battery Day. What is the new tabless technology and what are the thermal cell and battery pack implications?<br />Discussion on Lithium Ion battery cell construction, chemistry, manufacture, thermal design, internal resistance, heat sinking, and how cylindrical cells compare to large pouch cell construction.<br />Tesla Patent: https://patents.google.com/patent/US20200144676A1/en?oq=20200144676<br /><br />Forum: https://www.eevblog.com/forum/blog/eevblog-1340-new-tesla-4680-battery-cell-explained/<br /><br />Subscribe on Library: https://lbry.tv/@eevblog:7<br />EEVblog Web Site: http://www.eevblog.com<br />The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2<br />EEVdiscover: https://www.youtube.com/eevdiscover<br />Support the EEVblog through Patreon! http://www.patreon.com/eevblog<br /><br />AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g<br />Buy anything through that link and Dave gets a commission at no cost to you.<br /><br />Donate With Bitcoin & Other Crypto Currencies!<br />https://www.eevblog.com/crypto-currency/<br /><br />T-Shirts: http://teespring.com/stores/eevblog<br />#Tesla #BatteryDay #4680
