电动车电机嗡嗡响

电动车电机嗡嗡响 Abnormal。 You just let him get back to you when you buy it. Repair finished, rotten goods, but also your warranty point, repair a fart ah. What is this after-sales service?. Never heard of bearing bad motor to replace hodge. The motor bearings are 3 round one. Imports of retail will be 6 round. Besides, the motor is generally guaranteed for 3 years. Who changed the name of underwriting. The motor starts with a rattling or buzzing turn. But smaller, and almost disappeared after the rally. If you can't speed up now, then the motor angle and controller don't match. Brush motor start a great deal of effort. High speed swished. Even if the start of a slight jitter is also regular and rhythmic, it is obvious that the motor in a step by step, from slow to fast. The sound is too big and the speed is not smooth, there is a problem. . A motor that is in trouble will soon be bad. It is difficult for the motor with the wrong angle to go on the high speed, and it is easy to fire the controller. The bearing is not good, then check the rear tire flying fish answered: 18.8% 2009-07-15 21:05 because it is time to use for a long time, the motor bearing loose, not what big problem, general electric cars are like this, especially when the power of sound is more obvious. See the dawn of answer: 19.6% 2009-07-15 23:31 1} may be the cause of motor bearing. 2] may also be the cause of the. {brake adjustment is not good will appear this kind of voice} 3] flywheel rust will happen for this reason. 4] controller current is too big, also can have this sound 5] the motor current is too large, carbon brush wear is too serious. The disk will fall off and the sound will appear in the water. You can go to the aftermarket or repair to check. This phenomenon is caused by excessive wear and tear of bearings, the rotor and stator friction, professional called "sweep hall", if swept for a long time, will cause the stator coil short circuit, or may be the brake tight. Please check the advice immediately to the professional master, lest he. Is the motor running abnormal, check to see if the motor is very hot. Maybe the brakes rub and check the brake band. The problem of motor magnetic steel, my car is like this, when the electric killed the sound of the sound of the stake. Now I've fixed it. When I repaired, I broke a piece of magnetic steel and it started humming at the beginning. It should be electromagnetic noise, General Motors has electromagnetic noise, not only in electric vehicles, as power transformer in operation will produce noise. The DC motor of electric motor is different from the general sense, although by the battery powered, but has been converted to three-phase alternating current pulse or similar properties, so the noise is inevitable. Only the strong and weak points. The gap between the bearing and the front wheel is too large. Change the front wheel or add a thin iron piece in the middle, preferably a front wheel How long has the car been bought? Half a year, please! The front wheel bearing is a big place, commonly known as running round. You need to replace the front wheel. If the out of warranty, and do not want to spend money for the front wheel, you can use AB cement bearing and the wheel, or can be used for a long time! The tiger can not apply, but the internal influence performance. Easy to damp. Strict or painted good, resistant to moisture, Luo pin is not easy to loose Answer: xiaohuzi xdxp - six - 2010-1-30 21:50 The new motor is not gummed, and after a rain or through a deep puddle, the motor will enter the water, not the magnet is off, that is, the coil burned out, very troublesome The best answer in high speed electric motor driving situation, due to the large current discharge, according to the law of conservation of energy, not all motor converts electrical energy into heat energy, some (the current through the resistor, the resistance heating), is normal, but if the temperature exceeds 40 degrees, and 60 degrees above it dangerous, motor magnet wire insulation may melt, causing a short circuit, the motor burned. If your electric car has not been modified by itself, such as increasing the battery to 60V, or 72V, 84v, etc., or the controller power increase or malfunction, the general motor temperature will not exceed 40 degrees. If the motor is not hot when it is running at high speed, check the cause of the continuous discharge of the high current. One is the power circuit and the controller, and the other is the braking system. 4, the operation of the motor must be hot, with the increase in output power, motor work increases, heat increases. The heat and heat dissipation need to be balanced, and the heat should not cause the motor temperature to rise too high. If the temperature rises too high, it will cause: 1., the loss of grease in bearings, bearing beads lack oil burning; 2., motor winding insulation aging accelerated, resulting in short turn or ground fault, the motor can not function properly; The 3. silicon steel sheet and the permanent magnet demagnetization, motor power loss, motor weakness. 3. The motor has mechanical collision or mechanical noise when it is running No matter the high speed motor or the low speed motor, there should be no mechanical collision or discontinuous and irregular mechanical noise in the running of the load. Different forms of motors can be maintained in different ways. 4, the vehicle mileage is shortened, the motor is weak The reason of short vehicle mileage and motor fatigue (commonly known as motor boring) is complicated. But when we exclude the above 4 kinds of motor fault, generally speaking, the vehicle fault continued short trip mileage is not caused by the motor, and the attenuation capacity of the battery charger, filling electricity, controller parameter drift (PWM signal does not reach 100%) etc.. 5 brushless motor phase The absence of phase in brushless motor is caused by the damage of the hall element of brushless motor. By measuring the resistance of the output of the hall element relative to the hall wire and the lead of the relative hall power source, the comparison method is used to determine which Hall element is faulty. In order to ensure the commutation position of the motor, it is generally recommended to replace all three of the hall elements at the same time. Before replacing the hall element, it is necessary to make sure that the phase algebra angle of the motor is 120 degrees or 60 degrees, and that the three Hall elements of the phase angle motor are in parallel with each other in 60 parallel positions. While the 120 DEG angle motor, a Hall element in the middle of the three Hall elements is placed in the position of 180 degrees of reversal. Motor disassembly and maintenance I. dismantling of the motor Before removing the motor, the motor and the controller's lead should be pulled out first, and the corresponding relationship between the lead color of the motor and the lead color of the controller must be recorded. Before opening the cover of the motor, it shall be clean as a site to prevent the sundries from being sucked into the magnetic steel in the motor. Mark the relative position of the end cap and the wheel hub. Attention: be sure to loosen the screws so as to avoid the deformation of the motor housing. The radial clearance of the rotor and the stator of the motor is called air gap (air gap), general motor air gap between 0.25-0.8mm, after the completion of the demolition motor eliminates motor fault, must be on the original cover mark for assembly, which can prevent the two assembly after sweeping phenomenon.