Electric machine
The electric machine addresses the challenge of reducing housing size while maintaining cooling performance by using an internal cooler with hollow bind rings and an external cooling device, eliminating the need for a duct and ensuring efficient heat exchange.
JP2025044526AActive Publication Date: 2025-04-02TMEIC CORP (100 00)
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Patent Information
- Application Number
- JP2023152136
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-20
- Publication Date
- 2025-04-02
- Estimated Expiration
- 2043-09-20
AI Technical Summary
Technical Problem
Conventional electric machines with air-cooled stators require a duct for efficient cooling, which increases the housing size, and without the duct, cooling performance may be compromised.
Method used
The electric machine incorporates an internal cooler with hollow bind rings and cooling tubes that connect to an external cooling device, allowing for efficient heat exchange without the need for a duct, thereby reducing housing size while maintaining cooling performance.
Benefits of technology
This configuration allows for a reduction in housing size while maintaining effective cooling performance, as the external cooling device supplies a cooled heat medium to the internal cooler, which efficiently cools the stator without the need for a duct.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide an electric machine that enables miniaturization of a housing while maintaining cooling performance.SOLUTION: An electric machine includes a housing 10, a rotor shaft 20, a rotor 30, a stator 40, an internal cooler 50, and an external cooling device 60. The stator 40 includes a stator core 41 and a stator winding 42, and is accommodated in an accommodation space S. The internal cooler 50 includes a hollow first binding ring 51, a hollow second binding ring 52, and a hollow first cooling pipe 54. The first binding ring 51 restrains the first winding end portion 45, which is one end portion of the stator winding 42 in an axial direction, outside the stator core 41. The second binding ring 52 restrains the second winding end portion 46, which is the other end portion of the stator winding 42 in an axial direction, outside the stator core 41. The first cooling pipe 54 penetrates the stator core 41 and connects the first binding ring 51 and the second binding ring 52.SELECTED DRAWING: Figure 1
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