Water jacket structure for cooling of motor stator

Abstract

The invention discloses a water jacket structure for cooling of a motor stator. The water jacket structure comprises a water jacket body and a casing which are connected in sealing mode, wherein a runner for containing coolant is formed between the casing and the water jacket body; coolant inlets communicated with each other and coolant outlets communicated with each other are arranged on the casing and the water jacket body, a partition wall is arranged between the coolant inlets and the coolant outlets of the water jacket body, a plurality of inlet flow equalizing columns are arranged on one sides of the coolant inlets of the water jacket body away from the partition wall, and a plurality of outlet flow equalizing columns are arranged on one sides of the coolant outlets away from the partition wall; a plurality of rows of turbulent flow columns are distributed on the water jacket body between one sides of the inlet flow equalizing columns away from the coolant inlets and one sides of the outlet equalizing columns away from the coolant outlets, and two adjacent rows of turbulent flow columns are distributed in stagger mode. The water jacket structure can reduce resistance in flowing of the coolant, improves the heat exchange capability of water jackets and avoids viscous flow areas of the fluid from occurring in the runner, further surface heat exchange capability on the circumference of the water jackets is evenly distributed, and performance of a motor is improved.

Description

technical field [0001] The invention relates to a heat dissipation device for a motor stator, specifically belongs to a water jacket structure for strengthening the cooling of a motor stator, and can be used for cooling a high power density motor stator of a new energy vehicle. Background technique [0002] Thermal design and thermal management are one of the major challenges facing new energy vehicles. For the drive motors of new energy vehicles, due to the limitation of the motor installation space and its own weight, the size and structure of the motor are getting smaller and smaller, but the output power The requirement of output torque and output torque is getting higher and higher, which makes the cooling design of the motor face greater technical problems. [0003] At present, the driving motor of new energy vehicles is usually a permanent magnet synchronous motor, the stator is a three-phase winding, and the rotor is a permanent magnet material. Among them, the struc...

AI Technical Summary

Problems solved by technology

At present, the water jacket structure of the new energy vehicle drive motor on the market mostly adopts the design of the spiral channel (such as figure 1 shown), S-shaped runner design (such as figure 2 shown) or flat channel designs (such as image 3 Shown) etc., through calculation and analysis of fluid flow, it is found that in the design of these flow channels, the spiral water channel design and the S-shaped flow channel design have the problem of large flow resistance or heat transfer dead zone, and the design of the flat water channel has the problem of heat exchange Insufficient thermal capacity, there is room for improvement

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