Motor and radiating structure thereof

Abstract

The invention discloses a motor and a radiating structure thereof. The radiating structure comprises a water cooling shell (1) and a stator core (3); cooling water tanks are arranged on at least one of a water cooling fitting surface of the water cooling shell (1) facing to the stator core (3) and an iron core fitting surface of the stator core (3) facing to the water cooling shell (1); and the cooling water tank on one fitting surface is matched with the other fitting surface so as to form a cooling water channel (2). The radiating structure provided by the invention can effectively increase the heat conduction efficiency of the stator core, so that the radiating efficiency of the stator core can be effectively promoted; the volume requirement of the water cooling shell is effectively reduced, so that the overall weight of the motor is reduced, the structure compactness is increased, the motor power density is increased and the mounting space is saved; and the processing of the cooling water channel is convenient and the processing yield of the cooling water channel is increased, so that the processing cost is lowered.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a motor and its heat dissipation structure. Background technique [0002] As a common driving device, the motor has been widely used. During the operation of the motor, heat will inevitably be generated, and if the temperature of the motor is too high, the efficiency and safety of the motor will be greatly affected. Therefore, the motor needs to be cooled. [0003] Such as figure 1 As shown, the motor in this figure is an automobile drive motor, which generally adopts a liquid cooling structure as a heat dissipation structure. The heat dissipation structure includes the stator core 03 and the water-cooled casing 01 in thermal contact with the stator core 03. The interior of the water-cooled casing 01 is generally formed by low-pressure casting in the form of a combination of sand mold and steel mold. Casting needs to put the sand mold into the mold and cast together. A...

AI Technical Summary

Problems solved by technology

In the production process, due to the low positioning accuracy of the sand mold, the water channel of the water-cooled casing will have position deviation and leakage problems, which is inconvenient for the processing of the cooling water channel 02; moreover, the yield of the water-cooled casing is low, The highest is only 70-80%, which increases the processing cost of the water-cooled casing

The cooling water channel 02 is independently arranged in the water-cooling casing 01, so that there is a physical barrier part 03 of the water-cooling casing 01 between the cooling water channel 02 and the stator core 03, which reduces the heat transfer efficiency between the cooling water channel 02 and the stator core 03, The heat dissipation efficiency of the stator core 03 is not high

Since it is necessary to reserve a solid part of the closed cooling channel 02 on both sides (the solid part on the side close to the stator core 03 is the solid barrier part 03), the thickness of the water-cooled casing 01 is required to be relatively large, so that the water-cooled casing 01 The volume requirement is relatively high, which in turn causes the overall weight of the motor to be large, requiring a large installation space to install the motor

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