Author: forward

7、 The tricycle runs once powered on, with fast acceleration (known as “sharp speeding”). (1) Causes: ① Throttle damaged or cathode wire (black) open circuit or poor connectors, ② Controller  malfunctioning (2) Troubleshooting: ① Disconnect the throttle. If it is normal, the controller is normal, and the throttle and cathode wire should be checked. If the tricycle does not stop after disconnecting the throttle,…

6、There is abnormal motor sound (1) Causes: ① Large bearing clearance inside the motor, ② Motor and rotor friction, ③ Magnetic steel loosening and falling off, ④ Axial endplay inside the motor, ⑤ Brush motor commutator oxidized, burned, oily, uneven on the surface, and loose commutator segment, ⑥ Loose and misaligned brush holder (2) Troubleshooting: ① Replace the bearing. ② Repair the stator and rotor again. ③ Re-bond the magnetic steel. ④ Add appropriate washers axially. ⑤ Clean the…

5、 The motor jitters during operation Brushless motor: (1) Causes: ① Poor motor Hall connectors, ② Poor throttle contact, ③ Interference in the speed signal wire (2) Troubleshooting: ① Re-connect the motor Hall connectors. ② Re-connect the throttle connector. ③ Replace the controller and the meter to eliminate the interference. Tips: Generally electric tricycle jitter during use is caused by the poor contact of motor Hall switch connectors and throttle connectors. Therefore, give…

4、The motor speed is insufficient (1) Causes:  ① Throttle damaged, ② Insufficient battery capacity or charging failure, ③ Controller malfunctioning, ④ Motor malfunctioning (2) Troubleshooting ① Detect the signal wire (green) voltage of the throttle; the terminal voltage should be 4.2V when the throttle is at its maximum angle. If less than 4.2V, the electrode will slow down, and the throttle should be replaced. ② Recharge the battery. ③ Replace the…

3、 The motor does not run and the meter has no display (1) Causes:  ① Cartridge fuse burnt out, ② Battery damaged, ③ Cold joint and open circuit of battery wire, ④ Ignition lock damaged, ⑤ Poor battery contact or plug contact  (2) Troubleshooting: Test the output voltage of the battery with a multimeter. If no voltage, check the cartridge fuse, fuse holder, battery and battery wire for open…

2、 The motor runs intermittently (1) Causes:  ① Battery in undervoltage critical state, ② Poor battery contact, ③ Throttle wire damaged, but not broken, ④ Brake power-off switch malfunctioning, ⑤ Ignition lock damaged and in poor contact, ⑥ Circuit connectors poorly connected, ⑦ Components in the controller not soldered properly, ⑧ Cold joint of carbon brush and conductor group in the motor (2) Troubleshooting: ① Test the battery voltage, and recharge the battery. ② Adjust…

1、 The meter has normal display but the motor does not run. (1) Causes:  ① Brake lever damaged, ② Throttle damaged, ③ Motor damaged, ④ Controller damaged (2) Troubleshooting: ① Generally rain and moisture are more likely to cause short circuit in the connector. Unplug the brake lever socket (normally-on lever). If the motor runs, it is a brake lever failure, and the…

(2) Maintenance and maintenance of lithium batteries 1. When the lithium battery electric vehicle is used for the first time, the battery must be deeply charged, and the charger will continue to charge after the green light is displayed. For transportation safety, the battery is in a half-charged state when it leaves the factory. Before…

(1) Maintenance and maintenance of lead-acid batteries   1. Power loss during storage is prohibited     It is strictly forbidden to be in a state of power loss when the battery is stored. The state of power loss means that the battery is not charged in time after use. Storing the battery in a power-deficient state can…

Battery—Ternary Lithium battery（2） 1.Battery TypeThe battery is the main source of power for electric vehicles, and the quality of the battery will directly affect the mileage of the electric vehicle and the life of the battery. Common electric vehicle batteries on the market today include lead-acid batteries and lithium batteries. There are various battery brands…