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Improved method of electric tricycle controller

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The electric vehicle controller should be comprehensively designed taking into account the actual use of the battery and the motor. The relationship between the battery, the controller, and the motor should be fully considered, and they should be designed as a comprehensive system to obtain a more ideal Electric vehicle controller. It should not be a commercially available electric vehicle governor that has functions such as stepless speed regulation, brake power failure, and soft start. In view of the actual use of electric bicycles, we have improved the design of the brushless electric bicycle controller and added the following functions

Make electric vehicle controller have output short circuit protection function

The controller can realize the direct short-circuit protection of the output terminal, even when the motor is at the highest speed action (the highest voltage is usually output at this time) directly short-circuit the output terminal of the controller, the controller can also be very reliable protection. During protection, the circuit automatically reduces the output current to protect the safety of the battery. At this time, the current is about 0.3A, and the status of the output terminal is checked at any time. When the output terminal is faulty, the controller can automatically resume normal control with self-recovery function Therefore, the controller has self-protection capability, which improves the safety of the controller and the storage battery, and also improves the tolerance to the fault of the motor itself. In view of the actual use of electric bicycles, locked-rotor is one of the possible working conditions. If the controller can reliably protect the output terminal from short-circuit, the controller can also protect and protect the motor when the motor is locked. And battery safety. If there is only a controller with current limiting function, it will output a large current (such as current limiting 14A) at this time. These make the battery (capacity 12AH) in a large current discharge state (14A), which will affect the service life of the battery. In addition, the large current flowing through the motor windings will cause the temperature rise of the motor to rise for a long time, causing the winding insulation to age, which may affect the life of the motor, and burn the motor.

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