An electric drive system active short circuit system and a new energy vehicle
By introducing multiple fault identification methods and active short-circuit protection of multi-level computing units into the electric drive system of new energy vehicles, the problem of overvoltage in the high-voltage DC circuit caused by the increase of drive motor speed is solved, and all-round protection and reliability improvement of the electric drive system are achieved.
CN224447486UActive Publication Date: 2026-07-03FAW JIEFANG AUTOMOTIVE CO
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FAW JIEFANG AUTOMOTIVE CO
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-03
Smart Images
Figure CN224447486U_ABST
Abstract
The utility model discloses an electric drive system active short circuit system and new energy automobile. The electric drive system active short circuit system includes primary operation unit, secondary operation unit, tertiary operation unit and four operation unit, still includes speed detection circuit, bus overvoltage detection circuit and bus undervoltage detection circuit. The utility model embodiment is through to the discrimination of direct current bus voltage, drive motor speed and drive motor controller low voltage power supply fault state, realizes the hardware direct trigger power module lower bridge active short circuit function, can also through the state of software control active short circuit function simultaneously, has considered various working conditions of electric drive system more comprehensively, has improved the redundancy of electric drive system and high pressure security.
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