Stator Coolant Distribution Ring for Multi-Directional Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric machines face challenges in efficiently cooling the stator, which affects their performance in terms of power and torque output.
Innovation Solution
A stator assembly with integrated coolant fluid channels and distribution ring elements that allow coolant fluid to flow in different directions along the center axis, featuring cavities, through holes, and ring element channels to enhance cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant fluid channels are integrated in the stator with distribution ring elements, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The stator is divided into multiple segments including distribution ring elements with cavities, through holes, and coolant channels. Each segment performs a specific cooling function, allowing coolant to flow in multiple directions (axially and radially) to different stator regions independently, thereby improving cooling efficiency while maintaining manageable structural complexity through modular design
Solution Approach 2:
The distribution ring elements serve multiple functions simultaneously: they distribute coolant axially through cavities, provide radial coolant flow through through holes, and guide circumferential flow through ring element channels. This multi-functionality improves cooling coverage without proportionally increasing complexity, as a single component performs what would otherwise require multiple separate systems
2Temperature
If coolant flows in multiple directions through the stator, then temperature control is improved, but manufacturing complexity increases
Solution Approach 1:
The distribution ring elements are manufactured with pre-formed cavities, through holes, and coolant channels integrated into their structure before assembly. This preliminary formation of complex flow paths allows multiple coolant directions to be achieved through standardized components that can be manufactured using conventional processes, reducing the manufacturing complexity that would otherwise arise from attempting to create multi-directional flow paths in the stator itself
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves cooling of the stator, leading to increased power and torque output in electric machines by facilitating efficient coolant flow and better temperature control.
Implementation Method 1
a plurality of coolant fluid channels integrated in the stator, distributed in a circumferential direction around the stator and extending between the two end portions
Implementation Method 2
coolant fluid is allowed to flow in the stator in different directions along the center axis in an efficient manner, thereby improving the cooling effect of the stator
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A stator assembly (1) for an electric machine (100), the stator assembly (1) comprises a stator (2) which extends between two end portions (21, 22) along a center axis (A) of the stator assembly (1), corresponding to a rotational axis of the electric machine (100), the stator (2) comprising: - a plurality of coolant fluid channels (23) integrated in the stator (2), distributed in a circumferential direction around the stator (2) and extending between the two end portions (21, 22) with openings (231) at each end portion (21, 22), the stator assembly (1) further comprising: - a first coolant fluid distribution ring element (4) provided at one of the end portions (21). An electric machine (100) and a vehicle (200) are also disclosed.