Motor drive system and vehicle
By setting a suppression component on the outside of the return current mechanism of the motor drive system and optimizing the common mode current path using a third housing and insulation layer, the problem of poor common mode current suppression effect is solved, achieving more effective protection against electro-corrosion and extending the service life of motor components.
WO2026137779A1PCT designated stage Publication Date: 2026-07-02CONTEMPORARY AMPEREX INTELLIGENCE TECHNOLOGY (SHANGHAI) LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CONTEMPORARY AMPEREX INTELLIGENCE TECHNOLOGY (SHANGHAI) LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
The existing common-mode current suppression devices in motor drive systems have poor suppression effects, resulting in severe electro-corrosion of motor components and affecting their service life.
Method used
By setting a suppression component on the return current mechanism and placing it on the outside of the housing, combined with the design of a third housing and insulation layer, the return current path of common mode current is optimized, avoiding space constraints and temperature rise issues, and increasing the size and number of suppression components.
Benefits of technology
It improves the suppression of common-mode current, reduces electro-corrosion, and extends the service life of the motor drive system.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2025105813_02072026_PF_FP_ABST
Abstract
The present application discloses a motor drive system and a vehicle. The motor drive system comprises: a first housing; a motor controller, which is at least partially accommodated in the first housing; a first capacitor, which is connected to the first housing and the motor controller; a second housing; a motor, which is at least partially accommodated in the second housing, the motor controller being electrically connected to the motor; a second capacitor, which is connected to the second housing and the motor; a current return mechanism, which is electrically connected to the first housing and the second housing; and a suppression assembly, which is disposed on the current return mechanism and located outside of the first housing and outside of the second housing, the suppression assembly being used for suppressing a common-mode current.
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