一种交流供电的无刷风扇检测电路
By using the Hall element inside the motor driver chip to detect changes in the rotor magnetic field in the brushless fan detection circuit, the problem of motor stall detection delay is solved, real-time stall protection of the motor is realized, the safety and reliability of the motor are improved, and the circuit structure is simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HONGFEI ELECTROMECHANICAL TECH
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing motor stall detection solutions are delayed during the motor's acceleration and deceleration phases, making it impossible to detect the motor stall state in a timely manner. This leads to increased motor power consumption and temperature rise, which may cause safety hazards such as fires.
The brushless fan detection circuit, powered by AC, uses the Hall element inside the motor driver chip to detect changes in the rotor magnetic field and capture the rotor status in real time. This avoids reliance on current detection and is integrated into the motor driver chip, simplifying the circuit structure.
It enables real-time detection of motor stall, avoiding motor coil burnout and short circuit faults, improving the safety and reliability of motor operation, and reducing costs.
Smart Images
Figure CN224518881U_ABST