Driving device and electric vehicle

Abstract

The driving device has a first receiving chamber, a second receiving chamber, a partition between the first receiving chamber and the second receiving chamber, and a through hole provided in the partition. The reduction mechanism has a rotating shaft extending from the first receiving chamber through the through hole to the second receiving chamber, a first reduction gear which is a hypoid gear, and a second reduction gear. The first receiving chamber contains a first oil, along with housing a hypoid pinion and a first reduction gear. The second receiving chamber contains a second oil, which has a lower viscosity than the first oil, along with housing a second motor generator. The gap between the rotating shaft and the through hole is sealed by an oil seal.

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