Liquid-cooled motor for BSG and motor housing and cooling structure thereof

A cooling structure of a liquid-cooled motor for BSG, comprising:

• an outer water jacket disposed between a front end cover and a rear end cover of the liquid-cooled motor for BSG, both ends of the outer water jacket are connected to the front end cover and the rear end cover, respectively;
• an inner water jacket-fitted into the outer water jacket, one end of the inner water jacket is abutting against the front end cover, and the other end of the inner water jacket is connected to one end of the outer water jacket which is close to the rear end cover;
• a first cooling water passage disposed on the inner water jacket, and a water outlet and a water inlet of the first cooling water passage are both disposed on the outer water jacket, and are in communication with a cooling water circuit of the liquid-cooled motor for BSG, respectively;
• a second cooling water passage disposed on an inverter of the liquid-cooled motor for BSG;
• a first transfer water passage disposed on the outer water jacket and the rear end cover, water inlets of the first cooling water passage and the second cooling water passage are both connected to the first transfer water passage, and a transfer water inlet is disposed on the first transfer water passage corresponding to the water inlet of the first cooling water passage, and is in communication with the cooling water circuit of the liquid-cooled motor for BSG;
• and
• a second transfer water passage disposed on the outer water jacket and the rear end cover, the water inlet of the second cooling water passage is in communication with the water inlet of the first cooling water passage through the first transfer water passage, and a water outlet of the second cooling water passage is in communication with the water outlet of the first cooling water passage through the second transfer water passage;
• wherein a cooling water enters into the first cooling water passage and the first transfer water passage synchronously from the transfer water inlet, and enters into the second cooling water passage through the first transfer water passage, thereby realizing simultaneous cooling and heat dissipation of a stator, a rotor and the inverter of the liquid-cooled motor for BSG, respectively.