BMW bumps battery for the better: The 2027 i7 60 xDrive, driven
摘要
宝马为2027款i7 60 xDrive升级了第六代电驱系统，采用能量密度更高的圆柱电芯与碳化硅逆变器，并引入域控制器替代大量独立电子控制单元。该车延续7系将电动动力作为选项的策略，与V8版本并行销售。文章基于实际驾驶体验，介绍了新车在动力系统与电子架构方面的变化。
When BMW debuted the new 7 Series in 2022, it set a new standard for large luxury sedans, increasingly irrelevant though that class is. Rather than siloing off an electric alternative like Mercedes, with its EQS alongside the normal S-Class, BMW simply made the powertrain an option. Stick with a V8 if you want, or consider the rather good electric version instead—only subtle differences like the badging and lack of exhaust pipes give the game away.
Since then, BMW has brought out a string of even newer electric vehicles for the 5 and 3 Series (plus their SUV counterparts). It has switched from battery packs made of prismatic cells to more energy-dense arrangements of cylindrical cells. The motors are still electrically excited synchronous ones, but now the drive units feature silicon carbide inverters and more compact packaging.
This sixth-generation electric powertrain was designed for the clean-sheet Neue Klasse family, which also threw out the legacy cruft of dozens and dozens of discrete single-function electronic control units for a handful of powerful domain controllers. These computers take over those functions but with much faster processing power—and therefore more capabilities in terms of chassis control or powertrain efficiency—as well as the ability to be more easily updated.
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