A hybrid power driving system of the present invention comprises an engine (1), a first clutch (4), a transmission mechanism (28) including a transmission shaft, a first electric motor (27), a power supply and a hydraulic control system. The hydraulic cont...

A metal-resin composite comprises a metal substrate with concavities in the surface, a first coating layer on the surface of the metal substrate, a second coating layer on the first coating layer, and a third coating layer on the second coating layer. The ...

The present invention relates to a lithium secondary battery with a built-in protective circuit, which includes battery case (1), a battery core (2) and electrolyte. According to the present invention, a built-in protective circuit module (4) is provided t...