Basic knowledge of electric bicycle repair and maintenance serial electric moped

1. Electric moped 1. The driving mode of electric moped is generally selectedWheel hubThe drive is better, and the hub drive is better at the rear wheel drive, and the front drive is relatively poor. 2. For the placement of the battery, it is better to place the battery in a diagonal tube or a production tube in consideration of the balance of the vehicle and the convenience of getting on and off the vehicle. At present, the battery used is basically an economical lead-acid battery. As for the size of the battery, 36V12Ah batteries are basically used at present, and 24V electric vehicles are generally unpopular due to their short driving range. 2. Styles of electric mopeds 1. Standard type: This type of electric mopeds generally have a motor power of 150W-180W, especially smooth in shape, with a continuous mileage of 40-50 kilometers, easy to operate, moderately priced, and more suitable for longer commuting distances. Use by users who have a certain degree of mobility in work and life. 2. Multi-function type: This type of electric vehicle generally adds front fork suspension, cushion suspension, and shock absorber to the standard type.HeadlampAnd other devices, it is characterized by more complete functions, more comfortable when riding, and more convenient to use. 3. The main technical performance of the whole electric bicycle 1. Maximum speed: The maximum speed of the electric bicycle should not exceed 20KM/H. 2. Vehicle mass (weight): The vehicle mass (weight) of the electric moped should not be greater than 40KG. 3. Pedal driving ability: The electric power-assisted vehicle must have good pedaling ability, and the pedaling distance of 30 minutes should be no less than 7km. 4. Continued mileage: The continued mileage of the electric moped after one charge should be no less than 25km. 5. Maximum starting noise: When the electric moped is riding at a constant electric speed at the highest speed (electrically assisted riding at a speed of 15km/h to 18km/h (Tempo)), the noise should not exceed 62dB(A). 6. Electricity consumption per hundred kilometers: The electric power consumption of electric bicycles for electric riding (electrically assisted riding) should not be greater than 1.2kwh. 7. Motor power: The rated continuous output power of the motor of the electric booster should not be greater than 240kw. Fourth, the correct use of electric bicycles and component testing. The use of electric bicycles is similar to that of bicycles, and there are also big differences. Below we will explain in detail how to use and maintain electric bicycles: 1. Use the advantages of electric bicycles. The most ideal way to use it is to assist the car with electricity, to assist the pedestrian with electricity, and the linkage of manpower and electricity, which saves both labor and electricity. 2. For electric mopeds with zero-start function, due to the large current when starting at rest, more energy consumption, and easy damage to the battery, you should first use the pedals to ride at a certain speed (Tempo) and then use electric power to accelerate. Never accelerate in place. When driving uphill, carrying a heavy load, heading into the wind, or driving against the wind, the bicycle should be assisted by human riding. This can avoid the battery's super-high current discharge, increase the mileage on a single charge, and help prolong the battery life. 3. To charge the battery, use the special charger provided with the car. Insert the input plug into the battery box, first insert the battery box and then the AC power, and do not displace it. It takes 3-8 hours to fully charge. Charging in winter can appropriately extend the charging time. 4. The acceleration handle of the electric moped can sometimes not completely abdicate. Please develop a good habit of pushing the handle back to its original position after the acceleration is completed. 5.brakeWhen, the current of the motor is cut off immediately. But when the brake is released, if the accelerator handle is still in the accelerating position at this time, the motor will immediately get current to move forward (Forward), which is not conducive to safety. Please make sure to develop a good habit of pushing the handle back to its original position after the acceleration is completed. . 6. Before each use of the electric moped, check: (1)tireIs the air pressure sufficient? If the air pressure is sufficient, it can be loweredtireFriction resistance with the road (Strada). (2) Whether the steering of the handlebar is reliable and whether the brake is flexible and effective, it is necessary to ensure driving safety. (3) Whether the socket of the battery box and the charger plug are loose, whether the battery box is locked, whether the horn and light button are effective, ensure that the circuit is unblocked. 7. Electric bicycles are not suitable for driving on uneven or steep roads. If you encounter such roads, please drive slowly or get off the car. 8. When riding in winter, please use pedals as much as possible to help you not only exercise your body, but also help prolong the service life of the battery. (Because the low temperature reduces the capacity of the battery pack, if the depth of discharge increases, the continued mileage will be shortened). 9. Although the electric bicycle has good rainproof performance, please avoid direct sunlight or rain to prevent corrosion of the car body or rotating parts. It is used in the rainy season or when it passes through puddles, stagnant water, and the water level cannot be higher than the center line of the hub axle. Prevent damage to the motor caused by water ingress. 10. The standard load of an electric bicycle is 80 kg, so you should avoid carrying heavy objects when removing the weight of the rider. When carrying a heavy load, use the pedal to assist. 11. The seat of the electric bicycle is subject to the fact that the rider's feet can touch the ground to ensure safety. 12. Users of electric bicycles should read the manual of the electric bicycles before using the electric bicycles.V. The relationship between the battery and charger of electric mopeds. At present, in the electric mopeds industry, two-stage (constant current-constant voltage-limiting current) and three-stage (constant current-constant voltage-floating charge) charging methods are generally used. , Although these two charging methods basically meetAccumulatorHowever, there is a lack of control measures for the gas output. Especially in the later stage of charging, the battery will overflow a large amount of gas, resulting in faster electrolyte loss; the electrode plate is strongly washed by the generated gas, causing the active material on the electrode plate to fall off and seriously shortening the battery life. It is common for batteries to be under-charged for a long time. Some manufacturers use dozens of times for full charge and increase the end-of-charge voltage for charging to increase battery capacity recovery. Although this has some effect to some extent, it also leads to Serious water loss of the battery. Therefore, both the battery and the charger are two important lifelines to the electric bicycle itself or to the future development of the electric bicycle. This bottleneck must be removed if electric scooters are to have a more satisfactory service life for consumers; if electric scooters are to have a broader living space, this difficulty must also be overcome. 6. The functions and interrelationships of the four major components of electric bicycles. The functions and interrelationships of the battery, motor, controller, and charger. Batteries are the power source and energy carrier of electric vehicles and are used to drive motors. The motor converts the chemical energy of the battery into mechanical energy, which turns the wheels.The controller controls the output current and voltage of the battery to control the motorRotating speed, That is, the speed of the vehicle. The charger is an electrical appliance that charges the battery, converts alternating current into direct current and controls its current and voltage to charge it into the battery for storage. The battery is the core component of the electric bicycle. It receives the electric energy from the charger, stores it and finally outputs the electric energy through the motor, and the output is controlled by the controller. The charger is a device that directly contacts the battery. The quality of the charger directly affects the electrical performance and service life of the battery, and it must be "matched". The controller controls the current and voltage output of the battery, and has an under-voltage protection function. The level of the "under-voltage protection point" affects the depth of electric discharge, therefore, it affects the mileage, and if it is too low, it will cause over-discharge and damage the battery. The impact of the efficiency of the motor requires the power supply current of the battery. (To be continued)