BYD ( BYDDF ), China's Warren Buffett-backed electric vehicle giant, tripled its net income in the second quarter while selling more total vehicles than Tesla ( TSLA ). BYD stock jumped after the financial results Monday, ahead of anticipated China EV sales reports for August. X China-based EV makers Nio ( NIO ), XPeng Motors ( XPEV ) and Li Auto ( LI ) are expected to release August electric vehicle sales numbers Thursday, as Covid-19 outbreaks and restrictions continue be a major factor throughout the country. The China Association of Automobile Manufacturers reported that both total automobile production and…