Used Electric Car refer to vehicles that use on-board power as power, use motors to drive wheels, and meet the requirements of road traffic and safety regulations. They are widely used in our lives. Let's take a look at the working principle of Used Car. Used Electric Car are composed of electric drive and control systems, mechanical systems such as drive force transmission, and working devices to complete the given tasks. The electric drive and control system is the core of Used Car and is also different from gasoline vehicles. The electric drive and control system consists of drive motors, power supplies, and speed control devices of electric gesep motors. Used Electric Car use electric motors instead of fuel engines, and are driven by electric motors without automatic transmissions. Compared with automatic transmissions, motors have simple structures, mature technologies, and reliable operation. Compared with hybrid vehicles, the electronic control system of Used Car greatly reduces the internal mechanical transmission system of the vehicle, and also reduces the energy loss and noise caused by friction of mechanical parts. The cost of Used Electric Car is low, only about one-fifth of that of gasoline vehicles, and the energy conversion efficiency is high. At the same time, it can recover energy during braking and downhill, improve energy utilization efficiency, and charge at night with the help of cheap "valley electricity" from the power grid, which plays a role in smoothing the peak-valley difference of the power grid.

1. Used Electric Car do not handle environmental issues well. Although the country strongly advocates the use of power lithium batteries as the power source of Used Electric Car, due to their relatively high prices, many manufacturers use lead-acid batteries as power in order to obtain higher profits. The service life of lead-acid batteries is about 2-3 years, the replacement cycle is short, the cost of recycling and using abandoned lead-acid batteries is high, and pollutants such as lead and sulfur are produced. 2. The quality cannot be guaranteed. The country does not have a good management method for Used Electric Car. No matter large or small enterprises, they have not formed a strict and effective control process. Therefore, the quality of many Used Electric Car cannot be guaranteed. When the circuit of the whole vehicle is worn or there is water, it may short-circuit and cause spontaneous combustion, threatening people's life and property safety. 3. Affecting traffic order. The Used Car market is mainly concentrated in towns and counties. Most users are elderly people who do not have a driver's license. Moreover, most users are not very clear about traffic rules. They often run recklessly when driving Used Electric Car, which seriously affects traffic order. 4. The driving mileage is limited and charging is inconvenient. Used Electric Car are powered by electricity and generally have a short driving range. At present, my country does not have sufficient charging equipment. Once the power is exhausted, Used Electric Car will not be able to continue driving, causing many inconveniences to people's lives.

1. What to do if the car does not move after being fully charged: When you think that the Used Car has been fully charged, but the car does not move after starting, Solution: Check whether the power indicator is fully charged, and secondly, check whether there is noise during operation. If the noise is very loud, it may be a problem with the motor or the control board. This requires choosing a regular Used Electric Car repair shop WeChat or replacing new parts. 2. Sometimes when driving an Used Car out, you find a "squeak, squeak" noise, how to deal with it Solution: This situation may be caused by a problem with the rear axle of the car. Check whether the rear axle of the car is loose and whether the screws are loose. Then try your best to tighten the rear axle of the car and tighten the screws. 3. What to do if you find that the brakes do not stop when you step on them Solution: In order to reduce costs, some Used Car manufacturers choose low-end Chinese accessories, such as low-end brand brake systems, which are naturally unstable. If you step on the brakes when driving an Used Car, but the car cannot stop, you should not be afraid of danger and immediately turn off the Used Car's power door lock, which is actually the key lock. Of course, this works on flat roads. If it is on a steep slope, the car will run down due to inertia even if it is turned off.

(1) No pollution, low noise Used Electric Car do not have the exhaust gas produced by gasoline vehicles when they are working, and do not produce exhaust pollution. They are very beneficial to ecological environment protection and air cleaning, and are known as "zero pollution". The noise of pure automobile motors is also smaller than that of internal combustion engines. (2) High energy utilization efficiency and low application cost Research shows that the energy efficiency of Used Electric Car has exceeded that of gasoline vehicles, especially when running in cities, where cars are often started and stopped and the driving speed is not too high, Used Electric Car are more suitable. After the Used Car stops, the electricity is not consumed. During the braking process, the motor can automatically convert into a generator set to realize the reuse of energy during braking and deceleration, and the application cost is low. (3) Simple and reliable, easy to use and maintain Used Electric Car have a simpler structure than gasoline vehicles, fewer operating and transmission parts, more reliable operation, and less maintenance tasks. (4) Smoothing out the peak and valley differences of the power grid Used Electric Car can use the surplus electromagnetic energy of the power grid to charge their batteries at night, and can also feed electromagnetic energy back to the power grid during peak hours, thus playing the role of "filling the valley" for the power grid, which is beneficial to the use of the power grid and voltage stability.

1. Used Electric Car do not solve environmental problems very well. Although my country attaches great importance to lithium batteries as a power source for battery vehicles, due to their relatively high prices, many manufacturers use lead-acid batteries as power in order to obtain greater profits. The service life of lead-acid batteries is about 2-3 years, and the upgrade cycle is slightly shorter. The cost of recycling and reusing waste lead-acid batteries is relatively high, and they will continue to produce pollutants such as lead and sulfur. 2. The quality cannot be guaranteed. my country does not have a good management method for Used Electric Car. Regardless of the size of the enterprise, there is no strict and reasonable supervision process, so the quality of many Used Electric Car cannot be guaranteed. When the entire vehicle circuit is worn or there is water, it may short-circuit and cause spontaneous combustion, threatening people's lives and property safety. 3. Affecting traffic order. The Used Car market is mainly concentrated in villages, towns and counties. Most users are elderly people who do not have a driver's license, and most users are not clear about traffic regulations. When driving Used Electric Car safely, they often run recklessly, which greatly affects traffic order.

Maintenance of Used Electric Car. Generally, the rain in the city contains acidic substances, and these rainwater will corrode the car paint. Therefore, it is recommended to wash the car in time after the rain. You can also choose maintenance items such as polishing, waxing, coating, sealing glaze, and crystal coating that have a protective effect on the car paint, so as to prevent the damage of acid rain from corroding the car. At the same time, it is recommended to lubricate and dehumidify the door locks, door hinges, etc., and check and replace the wiper blades as appropriate. Maintenance of electrical control system. In rainy seasons, due to the damage of factors such as car wading, rain and high air temperature, it is easy to cause the entire vehicle electrical control system of Used Electric Car to be damp. The entire vehicle circuit should be checked in time, especially the various plugs and exposed electrical equipment component connectors, even the various connectors of high-voltage wiring harnesses, to complete the corresponding dehumidification operation. Maintenance of the chassis system of Used Electric Car. Due to factors such as car wading, the steering, braking and other systems should be checked, and lubrication, dehumidification and rust prevention tasks should be done well. In addition, please pay attention to the waterlogging spots in various districts of Shenzhen and drive safely, especially those car owners who have not purchased water crossing insurance. When driving, you should be more careful to avoid low potholes and be careful to avoid the roads below.

1. When an Used Car is driving, the mechanical energy provided by the power unit is mainly consumed in the following aspects: the efficiency loss of the process of converting energy into mechanical kinetic energy. For internal combustion engines, it is manifested as engine thermal efficiency, and for electric motors, it is battery discharge efficiency, inverter efficiency and motor efficiency. 2. Internal friction consumption of the transmission mechanism. The mechanical energy provided by the internal combustion engine and the engine is consumed to a certain extent in the internal structural friction of the transmission gear shaft, etc. However, compared with Fuel Car, Used Electric Car have a smaller loss in this part due to the streamlined structure of the Used Car transmission device. 3. Solve the friction resistance of the road and the friction resistance for power consumption. When driving at a constant speed on a well-level road, the car consumes all the surrounding calories to solve the friction resistance of the road and the friction resistance. As the speed increases, both friction resistances increase, and the proportion of friction resistance increases with the speed.

1. It will be more convenient and trouble-free Maintenance-free lead-acid batteries do not need maintenance during use! The voltage provided is also relatively stable, so the application will be more convenient, and Used Electric Car users will feel more at ease, because there is no need for maintenance, no need to add water, etc., which makes you worry-free. Safe batteries, Used Electric Car will also make you feel more at ease. 2. Long service life The advantage of maintenance-free lead-acid batteries is that the service life is twice as long as that of dry batteries! Usually, the battery is not broken but charged. "This statement is by no means sensational. The quality of battery charging characteristics plays a very important role in the service life and performance indicators of the battery. It must be taken seriously. In addition, maintenance-free lead-acid batteries provide relatively stable voltage to ensure the smooth charging and safety factor of Used Car batteries, and are not prone to overcharging or short-circuit faults. The battery life will be longer. 3. Cost saving Maintenance-free lead-acid batteries can be said to increase costs for Used Car manufacturers. Since the price of maintenance-free batteries is almost twice that of general batteries, but for users, maintenance-free increases the service life and reduces maintenance costs, which is a good opportunity to save money.

1. Used Electric Car do not have a good solution to environmental problems. Although the country strongly advocates power lithium batteries as the power source of Used Electric Car, due to their relatively high prices, many manufacturers use lead-acid batteries as power in order to obtain higher profits. The service life of lead-acid batteries is about 2-3 years, and the replacement cycle is slightly shorter. The cost of recycling discarded lead-acid batteries is high, and pollutants such as lead and sulfur will be produced. 2. The quality cannot be guaranteed. my country does not have good management regulations for Used Electric Car, and no matter what company, there is a lack of strict quality control work processes, so the quality of many Used Electric Car cannot be guaranteed. When the circuit of the whole vehicle is worn or there is water, a short circuit fault may cause a fire, threatening the life safety of the public. 3. Affecting traffic management. The Used Car sales market is mainly in towns and counties. Most users are elderly people who do not have a driver's license, and most users are not very clear about traffic regulations. They often run rampant when driving Used Electric Car, affecting traffic management. 4. The range is limited and battery charging is inconvenient. Used Electric Car are powered by electricity and generally have a shorter range. Currently, there are not enough charging stations in my country. Once the electricity is exhausted, Used Electric Car will not be able to continue driving, causing a lot of trouble for people.

1. When Used Electric Car are driving, the kinetic energy provided by the vehicle power system is specifically lost in the following aspects: efficiency loss in the process of converting energy into mechanical energy. For internal combustion engines, it is manifested as the thermal efficiency of the engine, and for electric motors, it is the battery discharge efficiency, inverter efficiency and motor efficiency. 2. Internal friction loss of the transmission mechanism. The kinetic energy provided by the internal combustion engine and the automobile engine is lost to a certain extent in the internal structural friction of the rotating shaft of each transmission gear. However, compared with Fuel Car, Used Car have a smaller loss in this part because of the streamlined structure of the Used Car transmission system. 3. Solve the friction resistance of the road surface and the work loss of friction resistance. When driving at a constant speed on a well-level road, the car consumes all the surrounding calories to solve the friction resistance of the road surface and friction resistance. As the speed increases, both friction resistances increase, and the proportion of friction resistance of Used Electric Car increases as the speed increases. 4. Loss of mechanical energy or potential energy during acceleration and uphill. The mechanical energy obtained by the car is lost in the deceleration or braking process. 5. Loss of electrical appliances and air conditioners in Used Electric Car.

1. When an Used Electric Car is driving, the mechanical energy provided by the power system is mainly consumed in the following aspects: the efficiency loss when energy is converted into mechanical kinetic energy. For internal combustion engines, it is the thermal efficiency of the engine, and for electric motors, it is the battery discharge efficiency, inverter efficiency and power efficiency. 2. Friction consumption inside the gear mechanism of Used Electric Car. The mechanical energy provided by the internal combustion engine and the motor is consumed to a certain extent in the internal friction of the gear shafts and rotating shafts. However, compared with the internal combustion engine, the new energy Used Car has a simpler transmission system structure than the internal combustion engine, so the loss of this part is smaller than that of the internal combustion engine. 3. Dealing with road traffic friction resistance and friction resistance work consumption. When driving at a constant speed on a road with good traffic conditions, the basic metabolism of the performance is all used to deal with road traffic friction resistance and friction resistance. As the speed increases, both friction resistances increase, and the proportion of friction resistance increases with the increase in speed. 4. When accelerating and climbing, it is converted into mechanical energy or potential energy. The mechanical energy obtained by the vehicle is consumed when decelerating or braking. 5. Consumption of in-vehicle electrical appliances and air conditioners. Among them, the friction of the transmission system focuses on the performance of the vehicle itself

1. What to do if the car does not move after being fully charged: When you think that the Used Electric Car is fully charged, but the car does not move when it is started. Solution: Check whether the Used Car power indicator is fully charged, and secondly, check whether there is a noise when running. If the noise is loud, it may be a problem with the motor or control board. This requires WeChat or replacement of new parts at a regular Used Electric Car repair shop. 2. Sometimes when driving an Used Car out, you find a "creaking, creaking" noise. Solution: This may be a problem with the rear axle. Check whether the rear axle can fall off and whether the screws can fall off. Then try your best to tighten the rear axle and tighten the screws. 3. If you find that the brake is continuously pressed during braking. Solution: In order to reduce costs, some Used Electric Car manufacturers still choose low- and medium-end accessories from China. For example, the braking system of low- and medium-end brands is naturally unstable. If you step on the brake while driving an Used Electric Car, but the car cannot be stopped, you must remain calm and turn off the electronic lock immediately, which is actually the key. Of course, this is feasible on flat roads. If it is downhill, the Used Electric Car will run down due to inertia after it is turned off. You can only jump out of the car or grab the square plate to adjust the car to a safe and flat road and then turn off the electronic lock.

1. Used Car cannot solve environmental problems well. Although the country vigorously promotes power lithium batteries as the power source of Used Car, due to its relatively high price, many manufacturers use lead-acid batteries as driving force in order to obtain higher profits. The service life of lead-acid batteries is about 2-3 years, and the replacement cycle is slightly shorter. The cost of recycling abandoned lead-acid batteries is high, and pollutants such as lead and sulfur will be produced. 2. The quality cannot be guaranteed. The country cannot have good management regulations for Used Car. Regardless of the size of the company, there is a lack of strict control procedures with strict requirements. Therefore, the quality of many pure Used Car cannot be ensured. When the circuit of the whole vehicle is worn or there is water, it may short-circuit and cause spontaneous combustion, endangering people's personal and property safety. 3. Affecting traffic management. The Used Electric Car market is mainly in towns and counties. Most of the users are elderly people who do not have a driver's license, and most users are not very clear about traffic rules. When driving Used Car, they often rush around, affecting traffic management. 4. The range is limited and charging is inconvenient. Used Car use electricity as a driving force, and their driving range is generally shorter. At present, my country has not built sufficient charging piles. If the electricity is exhausted, Used Car will no longer be able to continue driving, which brings inadequacies to people. 5. Many Used Car do not have a battery management system at all. Therefore, during the use of the car, th

1. Driving equipment The function of the driving equipment of Used Electric Car is to use the wheels to convert the driving torque of the motor into the interaction force on the ground to drive the wheels to move. It is the same as the structure of other vehicles, consisting of wheels, tires and suspension. 2. Turning equipment The turning equipment is set up to realize the turning of the vehicle, and is composed of a steering machine, a car steering wheel, a steering mechanism and a steering wheel. The control ability acting on the steering wheel of the Used Car uses the steering machine and the steering mechanism to deflect the steering wheel to a certain angle to realize the turning of the vehicle. Most Used Electric Car turn with the front wheels, and electric forklifts used in industry often use four-wheel steering. The turning equipment of Used Electric Car includes mechanical turning, hydraulic steering and hydraulic power steering. 3. Braking device The braking device of Used Electric Car is the same as other vehicles. It is set up for slowing down or stopping the car. It is generally composed of brakes and operating devices. In Used Electric Car, there are usually electromagnetic braking devices, which can realize the operation of motor power generation with the help of the drive motor control circuit, so that the heat transfer during the deceleration braking system is converted into the current for charging the battery, so as to obtain recycling.

Compared with hybrid Used Electric Car, Used Car use motors instead of internal combustion engines, which are low-noise and zero-pollution. The space and time weight occupied by motors, fuel and transmission devices can be used to compensate for battery requirements; and because of the use of a single electric energy source, the electronic control system is greatly simplified compared to hybrid Used Electric Car, reducing costs and also compensating for the price of battery parts. Compared with gasoline vehicles, Electric Car are more compact, with fewer operating and mechanical parts and less maintenance. When using AC induction motors, does the motor need maintenance? More importantly, Used Electric Car are easy to operate. At the same time, the energy of the braking system and downhill can be recovered to improve energy utilization; research on Used Electric Car has found that its energy utilization efficiency has exceeded that of gasoline vehicles. Especially in urban operation, vehicles stop and go, and the driving speed is not too high, Used Electric Car are more suitable. Used Electric Car do not consume electricity when they stop. In the braking system, the motor can automatically convert into a generator set to realize energy reuse during braking and deceleration.

1. Try to maintain a medium to low speed and drive smoothly. Driving too fast will also cause current instability and reduce the efficiency of the power device; while driving too slowly, although the efficiency is improved, it takes longer to travel the same distance. After the Used Car starts to accelerate to a certain speed, you can relax the accelerator pedal a little to maintain the speed limit on the road. 2. Try to avoid sudden acceleration and deceleration, and use the energy recovery system of the vehicle. By reducing the number of parts, it helps the vehicle to recover a lot of energy. If the Used Car is stimulated by a large signal frequency in a short time, the Used Car will reduce the capacity of the battery, and at the same time cause damage to the Used Car control panel and brake accessories. Therefore, when driving an Used Car safely in normal times, the emergency stop of the Used Car should be reduced. 3. When driving fast, try to close the windows of the Used Car. Although a relatively low speed is used when commuting in the city to save power, if you must maintain fast driving in the subway, there are still ways to reduce power loss. By closing the doors and windows tightly to prevent friction resistance at high speeds, wind noise can also be reduced.

1. Try to maintain a medium to low speed and drive at a constant speed, so that the Used Car motor works in the best efficiency range. Driving too fast will cause excessive current, resulting in reduced efficiency of the power system; while driving too slowly, although the efficiency is improved, the time to travel the same distance is also longer. After the Used Car starts to accelerate to a certain speed, you can relax the accelerator pedal appropriately to maintain the current speed. 2. Try to reduce sudden acceleration and deceleration, and use the energy recovery system of Used Electric Car. By reducing the number of light brakes, help the vehicle recover more kinetic energy. Large-scale stimulation in a short period of time will reduce the capacity of the battery, and at the same time cause damage to the Used Car control panel and brake parts. Therefore, when driving an Used Car on a daily basis, the emergency stop of new energy vehicles should be reduced. 3. Drive fast and close the windows. Although the speed is controlled when traveling in the city to save electricity, there are still ways to reduce power loss when it is necessary to maintain fast driving on highways. By closing the aluminum doors and windows to avoid friction resistance in a fast state, wind noise can also be reduced. 4. Avoid driving on the ground with poor conditions. If possible, try to choose a route with better ground conditions. This can not only reduce rolling resistance and save some electricity, but also give you a better riding experience and extend the service life of the Used Car.

1. Regular charging and maintenance Regular charging and maintenance of Used Electric Car can effectively reduce battery damage caused by power loss, and can also improve the performance indicators of the entire new energy vehicle. When not in use for a long time, the battery should be charged and maintained every month. If it is not convenient to fully charge and discharge, you can fully charge it when the power is below 10%, which can also play a certain role. 2. Pay attention to tire pressure When the tires of Used Car are kept at a higher air pressure, it will not only reduce the level of bumps during driving, eliminate the discomfort caused by objects such as stones, but also reduce the friction resistance between the tires and the road surface, so it has the effect of improving the cruising range. 3. Pay attention to the battery operating temperature The battery should be kept at 0-40 degrees Celsius as much as possible. High or low will also affect the battery cell, especially long-term high temperature will cause great harm to the battery cell, and relatively low temperature will also cause a sharp drop in cruising range. 4. Regular maintenance of lubrication standards Although the mechanical system of Used Car is much more streamlined than that of fuel vehicles, better lubrication standards are still a prerequisite for comfortable, environmentally friendly, energy-saving and safe driving.

1. Regular charging and maintenance Regular charging and maintenance of Used Car can effectively reduce battery damage caused by power loss, and can also improve the performance indicators of the entire Used Electric Car. When not in use for a long time, it is also necessary to charge and maintain the battery once a month. If it is inconvenient to fully charge and discharge, you can fill it up when the power is below 10%, which can also play a certain role. 2. Pay attention to tire pressure When the tires of Used Car are kept at a higher air pressure, it will not only reduce the shaking level during driving, but also eliminate the discomfort caused by objects such as stones. At the same time, it will also reduce the dynamic friction factor between the tire and the road, thereby increasing the mileage. 3. Pay attention to the operating temperature of the battery Try to keep the battery at 0-40 degrees Celsius. High or low will also affect the battery core, especially long-term high temperature will cause great harm to the battery core, and relatively low temperature will also cause a sharp drop in mileage. 4. Regular maintenance of lubrication standards Although the mechanical system of Used Car is much more streamlined than that of fuel vehicles, better lubrication standards are still a prerequisite for comfortable, environmentally friendly and energy-saving, and safe driving.

The failure of the Used Car power supply is a situation that Used Electric Car often encounter when they are working. There are many factors that may cause this. Let's talk about the reasons for the failure of the Used Car power supply display information. 1. Low voltage will also cause the Used Car to have no power display information. The motor terminal voltage is more than 10% lower than the rated current, and the motor starting torque is too small, making the electric transport vehicle unable to move and work. During the inspection period, use a multimeter or voltmeter to measure the motor input terminal voltage. 2. Electrical damage, disconnection or poor contact of the main circuit and control system of the permanent magnet motor will also cause the permanent magnet motor of the flatbed truck to fail to work normally due to overvoltage. In this case, it is necessary to repair the main circuit and control system. During the overhaul period, the motor must be burned to prevent overvoltage from the main circuit and control system to the three-phase motor. 3. Check whether the distribution line supplies power to the power supply of the electric flatbed truck. Generally, the electric probe is used for testing. If it is not plugged in, the work will be completed after plugging in. 4. When the permanent magnet motor of an Used Car is suddenly plugged in and causes harm, the motor must be disconnected from the power line first, and only power is supplied to the main circuit and control system. Then tap the run and stop buttons, regularly check and analyze the working conditions of the control electrical appliances and circuits, repair and replace new electrical appliance