Jing-Jin Electric Technologies Co., Ltd.

Zhenjun Zhang

Ping Yu

Li Liu

Wei Cai

Kunxing Sun

Zhe Feng

The present disclosure discloses an electric-machine shaft, wherein the electric-machine shaft is provided with a hollow structure in an axial direction at least one end, and the hollow structure is, at a position close to the end, provided with a coolant pumping mechanism having a spiral groove, so that the coolant is able to enter the hollow structure by an attractive force generated by rotation of the electric-machine shaft; the spiral groove is provided on an inner surface of an annular member, the annular member is fixedly mounted to the hollow structure, or the spiral groove is directly provided on an inner surface of the hollow structure; and the electric-machine shaft is provided with a plurality of groups of coolant channels in an axial direction, the coolant channels are in communication with the hollow structure, and when the electric-machine shaft is rotating, oil liquid inside the hollow structure is thrown out by the coolant channels, to cool components inside an electric-machine housing. In the present disclosure, by providing the hollow structure and the coolant pumping mechanism, a structure similar to a pump is formed, and when the electric-machine shaft is rotating, the coolant can be attracted into the hollow structure, and then be thrown out by the coolant channels, which realizes the cooling and lubrication of the components inside the electric-machine housing, and improves the capacity of heat dissipation of the electric machine.

Electric-machine shaft

A rotor device of an integrated starter-generator motor and a rotor working system are disclosed in the present invention. The rotor device is a monobloc cast, that is machined, to form an inseparable one-piece structure. The rotor device takes the shape of a straw hat and is provided with an external side surface of a hat top being surface (), an external side surface of a hat brim being surface (), an inner side surface of the hat brim being surface () and a surface () which connects the surface () with the surface (). The surface () of the rotor device is provided with multiple through holes () used for fixing with a crankshaft (). The surface () of the rotor device is provided with multiple threaded holes () used for connecting with a clutch. The threaded holes () pass through the surface () corresponding to the surface ().

Growing community of inventors

Beijing, China

Zhenjun Zhang