The electrical vehicle spare parts are large and maintenance is essentially the maintenance and replacement of the spare parts。
1. Electric vehicle frame testing
The frame is the safety core of a vehicle, which may be tilted over the whole vehicle when it is found to be cycling; if the vehicle has a serious internal dent, it may be overloaded and cycling in a worse road, leading to a distortion of the whole vehicle, which is likely to occur where there is a crack between the front tube and the former triangle welding or where there is a fracture in the combination of the saddlebar and the frame. If there is a sound of metal taping, it may be the strength or welding of certain pieces。
2. Maintenance of horizontal fork after electric vehicle
When we're riding on a back wheel, brakes with a severe tail, high-speed rides with a car shaking, and feet falling off, that's when the back fork screw loose. These problems require a half-turning of the screws, which makes it difficult to relax。
3. Maintenance of detection fork in front of electric vehicles
The fork is more vulnerable to damage, with general collisions and strong dives causing damage to the fork spring, which directly results in the front wheel mud plate touching the front triangle or the front wheel touching the plastic, and the electric vehicle will not bend. So how do we solve this problem? It is simple to look at the gap with greater force or to decide whether to change it or to increase it。
4. Maintenance of handles and tubes
Long periods of use can lead to rusty handles and tubes, when no screws can be wrinkled, and should be handled with loosely embroidered water for a period of time, then with a steel hammer, carefully hitting the outside of the front tube, preferably with a clubs or drum wrench when screwdrivers, usually without a slab or a live wrench。
5. Detection of electrical cable problems
The damage to cables is generally small, but once encountered, it becomes difficult to resolve because the reasons are difficult to find. During maintenance, then, the potential area of the problem can be identified by the function of the controller or monitor, and then the connection of the cable can be found by the corresponding colour。
6. Electric vehicle controller detection maintenance
Damage to the controller is generally more common, in the form of the non-rotation of the electric power, the high noise, the non-turning of the time, the inverting of the time, the temperature of the controller, the weakness of the electric power, etc. For the controller, the non-turning of the electrical power may be a disruption of the broken telecommunications or a problem with the repositioning of the single machine, the repositioning of the mobile noise may be more likely to be a problem or an error in the flow of the cmos tube, the failure to rotate may be a poor exposure to the power supply of the controller, the inverting of the time may be a welding welding of the reverse foot of the control inside the controller, which may be an increase in the current consumed by the controller itself, the general consumption of which is in question at 30-40 ma or the operation of the cmos tube; and the inability of the electrical power may be a poor coron welding that detects the flow, resulting in failure to pass through the large current。
7. Electric vehicle performance detection and maintenance
The following are the main indicators in our determination of electrical performance:
(1) electric noise. Noises are available to each electric generator, but no noises such as metallic collisions, plume squeezes, frictions are allowed and even electromagnetic noises are allowed, which can be monitored on the axle of the electric machine through an empty metal listening bar。
(2) an empty electric current. Space-borne currents for the detection of electric appliances reflect, inter alia, the magnetic retreat of the electric power, the wear and tear of the machinery, and, if the current is increased, the speed of the airborne transfer of the electric power is increased, which generally indicates a more visible phenomenon。
(3) the electric power load. The detection of charged currents of electric appliances mainly reflects the actual operating efficiency of the electric power, which, if the load is increased but the actual power is smaller, indicates that the electrical power is low, that there is a need to check the magnetic build of magnets, and that the strong welding within the wires is important; if there is a brush, there is a need to check whether there are short circuits in the switch. The switch type is commonly used by hall without a scrubber, and on-line tests primarily test the correctness of changes in the hole signal, usually with a rotation of high and low voltage, with a change of half the number of magnets. If you look closely at the changes in the voltage of the wires, it can be found to be a regular six repeat cycles. For the 120-degree changes, 100, 110, 010, 011, 101, and for the 60-degree changes, 100, 110, 111, 011, 001。
In addition, when repairing hall without a brush, attention should be paid to hall's model, to the need to wear static gloves or wrists while welding, to the best of all, and to the fact that the branding is offline and to the opposite side of hall。
When repairing a scrubber with a carbon brush, the brush is placed in the brush, the soft copper lead of the carbon brush is tightened and fixed in the sink, and when it is fully placed in an external fax, it is relaxed and its flexibility checked。
8. Electrical vehicle battery detection maintenance
Lead-acid and lithium batteries are commonly used。
Formal testing of lead-acid batteries must detect the actual capacity, which is generally a standard discharge of 0. 5c and a capacity of 2h for c, which can be replaced during the warranty period if the plant's capacity is not reached。
The following simple tests can be performed during the overhaul of lead acid batteries:
(1) measurement of the end voltage of the battery, short circuit currents of the test battery; if the end voltage of the battery is high, but the sparks are small when the short circuit is short, which means that the battery has openings, etc., and that there are less breakdowns in the general internal plate welding, and care is taken to check the welding of the exposed end and the severe corrosion of the polar。
(2) the battery's end voltage is measured immediately after charge, then placed above 5h, and the end voltage is re-detected, if the voltage drops significantly and the re-measurement continues to decrease significantly, indicating that the battery is severely discharged and generally needs replacement。
(3) in the charging process, the battery is heated, but the battery is not deformed, and the charging current of the charger is checked, typically at 1. 6-1. 8a for the 10-14ah battery and 2. 5-3. 0a for the 17ah-20ah and above. Batteries lose moisture due to severe heat and therefore need to be replenished. The simple operation is as follows: open the face cover of the battery, rotate the battery with six safety valves, add about 6 ml of pure or distilled water per cell, end of fluid, deep filling with pulse chargers, 0. 5c discharge, recycling once, and should be significantly improved。
Light bulbs
The existing double-wire light bulb, which is very different from the public one, would cause the light bulb to work irregularly if it was not matched to the cable, and would seriously cause the whole car to remain intact. Common breakdown maintenance forms for electric vehicles:
