What are the common faults of new energy vehicles on the market?

At present, the common faults of new energy vehicles on the market include motor failure, power battery failure, and circuit failure. This article carefully explains the above fault problems.

The first is the failure of the electric motor, and the engine is an important part of the structure of new energy vehicles. In addition, different types of new energy vehicles have different types of engines, so the error situation of the engine will also be different. Engine failure can be caused by low voltage or high voltage, as well as aging or severe wear and tear of the engine's internal components, which causes the engine to not work properly.

The second is the power battery failure, conventional fault detection and diagnosis, and the power battery problem is found. The battery can be applied to the traditional fault diagnosis technology, but the power battery of the new energy vehicle can not meet the requirements of detection and diagnosis, and advanced maintenance technology must be used to detect and diagnose it around the clock to find the fault of the power battery of the new energy vehicle. For example, the power battery of new energy vehicles has particularly high requirements for the charging environment.

If the engine of the new energy vehicle is in a low-voltage environment, the battery will not be charged immediately after the new energy vehicle is stopped, and the battery will not be charged. In this context, the traditional maintenance and diagnosis technology is difficult to achieve, therefore, it is necessary to introduce more advanced maintenance technology to identify and diagnose the power battery of new energy vehicles, quickly find out the cause of the problem and take corresponding measures, and solve the problem and error in time.

Finally, there is the fault of the circuit, and the switching system of an energy car is more complex than that of a conventional car. With the development of social electronic technology, the switch system and electronic control technology of new energy vehicles are becoming more and more popular, and for the entire switch system of new energy vehicles, the use of different electronic equipment increases the load of the whole cycle. In addition, drivers sometimes add additional power consumption, such as charging in the car.

This type of internal electronic components is a great threat to the entire car, and these internal electronic components can easily burn out. When these problems occur, the car breaks down and poses a threat to the driver's safety. Therefore, it is necessary to find the problems in the internal circuit in time.

Conventional detection techniques cannot achieve this effect, and it is difficult to determine the cause of the error. With the advent of electronic diagnostics, it is possible to monitor it in real time without the need to disassemble the internal equipment and perform a formal inspection of any one of the circuits, thus avoiding risks.

At present, the most common fault is that the gearbox is seriously worn or damaged, because now new energy vehicles use poor quality gearboxes in order to reduce costs.

The common faults of new energy vehicles are that he typed some words, some of his liquids needed to be replaced or other things. He didn't have a lot of consumables.

What are the potential failures of <> new energy vehicles? I think it's specific in the following areas:

The first is battery failure, new energy vehicles have higher requirements for power supply batteries, once the battery failure will seriously affect the service life of new energy vehicles. However, the battery energy consumption of the new energy vehicle itself is high, and when the mileage is increased, or the service life is too high, it will also have different effects on the battery. Some of the more common battery failures include:

Temperature faults, vehicle body insulation failures, communication failures, battery high-voltage interlock failures, charging failures, etc., as well as types of faults caused by insufficient battery power supply efficiency.

The second is the failure of the power supply of the whole vehicle, which is an extremely serious fault of new energy vehicles, and similar situations occur such as fuse failure, loose wiring plug, power switch failure and so on. The fuse plays a role in protecting the electrical safety of the car body equipment in the case of excessive voltage, and once the fuse fails, the responsibility is easy to cause the instability of the power supply voltage and indirectly cause the circuit failure. When the wiring plug is loose, it is easy to cause the phenomenon of power supply failure of the whole vehicle, and the phenomenon of similar virtual connection is also another cause of insufficient power supply of the circuit.

There are many fault factors of power switch, which can be judged by measuring the voltage at both ends of the input and output lines of the power switch by measuring the multimeter.

Again, there is the charging failure, and in most cases the battery failure type is related to the charging problem interference. On the one hand, after the physical link is completed, the charging state can be initiated, but the charging job cannot be completed. On the other hand, the charging operation is stopped for no reason during the charging process.

This is due to the unstable charging environment, the internal ambient temperature of the power battery is not very stable when charging, and similar problems are prone to occur when it is lower than -20C or higher than 65C.

On the one hand, the temperature factor is caused by the excessive temperature difference between the battery before and after charging or operation, or the intermittent operation of the cooling fan, the failure of the water-cooled circulation device, etc., when similar problems occur, the power battery in the operating state cannot be guaranteed to be stably cooled. On the other hand, in the process of troubleshooting similar battery faults, you need to re-insert the fan connector to verify the power supply effect and operation status of the fan alone. The temperature of the battery in the operating state can be affected by the external environment, and the factors of too low or too high temperature are mainly related to the failure of the cooling fan, and the damage of the temperature probe is also an inevitable factor that causes similar problems.

Battery short circuit, operating system failure, etc. Battery short circuit, new energy vehicles use a large number of batteries to provide power, and more batteries are prone to short circuits. Operating system failure, new energy vehicles all use intelligent operating systems, which are prone to failure.

These potential problems are that the charging process is relatively long, the battery life of the vehicle is relatively short, it cannot go to a far place, it is difficult to charge, and the charging line is not available.

It is easy to spontaneously combust, easy to lose control, easy to catch fire, and in the case of a relatively harsh environment, there is no way to provide kinetic energy, and the braking system is prone to problems.

The battery life is insufficient, the battery is prone to loss, the power is insufficient, the maintenance cost is expensive, and the maintenance is more difficult.

1.Battery failure.

New energy vehicles will be affected by various faults in the application process, among which the most typical and common problem is the battery. This failure is mainly manifested in pure electric vehicles and hybrid vehicles. When the vehicle is driven for a long time, the battery will be in a relatively high voltage state.

It is easy to be damaged due to pressure during high-voltage acceleration, which directly affects the state of the management system and the single battery. Most of the time, the occurrence of such failures is also related to interference in the battery capacity and internal resistance balancing process. Once irreversible damage occurs to the management system, it will lead to the loss of functions related to battery monitoring and protection, making the battery unable to be charged, and greatly affecting the service life of the EV battery.

In addition, battery problems will interfere with other wiring connections of new energy vehicles and affect the normal operation of the whole vehicle.

2.Motor failure.

For new energy vehicles, an important component is the motor. The main working principle of the motor is to convert energy to meet the energy needs of new energy vehicles. Once there is a problem with the engine, the overall performance of the new energy vehicle will be disturbed.

A large number of researchers have concluded through experiments that the failure of new energy vehicle motors is complex and may be caused by a variety of factors.

3.Transmission system failure.

The main function of the gearbox is to ensure that the power is switched, and the vehicle can run more smoothly after completion, so that the vehicle can run more smoothly. According to the working principle of the transmission, it can be found that when the vehicle is driving at high speed, the transmission will also produce a large operating rate, resulting in a significant increase in its own load. In addition, shifting gears during driving will also cause a lot of friction between the gear teeth and other parts, resulting in different degrees of wear and tear of the parts, which increases the probability of transmission failure to a certain extent.

During the driving of the vehicle, the transmission failure is mainly manifested as the poor driving state of the vehicle and the transmission failure.

Yes. Because new energy vehicles are still developing, the technology is not mature enough, so there will be failures.

Yes. Jingzhen socks new energy Liang source car will also have certain failures, and may be affected by the battery, must choose a better quality, usually should also standardize their own driving behavior and technology.

Not really, because the current research and development is very mature, and there will be very strict requirements for cars.

If you want to say that the common problem of new energy vehicles, it is the problem of battery life. Regardless of whether your new energy vehicle is bought in millions, or tens of thousands of purchases, the battery life problem is a common problem of new energy vehicles.

Some pure electric vehicles,The range is 400 km or 500 kmBut the actual endurance can only run up to 300 kilometers, is this normal? Actually, this is normalThe most used in China is the NEDC range calculationThis method of calculating endurance can be understood as driving regularly on a moving machine. The conclusion of this calculation method is that the calculation is carried out without intervention and is the maximum endurance in an ideal state.

But in fact, we need to turn on the hot air in winter, we also need to turn on the cold air in summer, we need to stop when we encounter traffic lights, and we have to drive forward slowly when we encounter traffic jams. The NEDC battery life calculation does not have these data, so it will make some car owners feel that the battery life is unrealWhy did the car company tell me that the range of 400 km or 500 km, I could only run up to 350 km,Most of them are calculated in a way that is not proportional to what we actually use.

As we all know, pure electric vehicles rely on batteries to power themThe best working environment of this battery is around 25 degrees Celsius, and many cities, especially some cities in the north, can reach more than 20 degrees below zero, and even some reach more than 30 degrees, which will cause its own battery capacity to become lowTherefore, the battery capacity in winter will be reduced to a certain extent.

In response to this situation, many car companies have added the function of battery heating to make the battery enter the best working state by physical heating. There are also some people who specialize in batteries and I said that from zero to 25 degrees, the capacity of the battery drops by about 1% for every 1 degree drop in temperature. This is why the battery life will shrink in winter, which is also a common problem of new energy vehicles.

Now we search from a map software to find some charging stations around, maybe you will find a lot of charging equipment, but in fact, we only found after we arrived at this place, either it is broken, or it is still under constructionThe supporting facilities for charging are still imperfect, which is a common problem of new energy vehicles.

At present, many car companies are planning to build their own charging facilities, but most of them are under construction, and the supporting facilities are not very perfect. There is no charging place around many communities, and it is too far away from home to run to a place with charging piles, so it is not suitable to take a taxi home, and it is slow to take a bus. It can be said that there are few charging facilities, which is also a common problem of new energy vehicles.

But I have to admit that although the common problems of new energy vehicles are obvious, this car does bring us a lot of convenienceIn particular, the price of oil **, but the price of electricity can remain stableRelatively speakingThe cost of maintenance is also much cheaper than that of gasoline vehiclesWhile reducing the cost of using a car, it can also travel greenIt is believed that the new energy vehicles will become more and more perfect in the future, and these common problems will be slowly eliminated.

First of all, the battery life is relatively poor, and in the winter, the power loss of new energy vehicles is particularly serious, the battery is not particularly long, it is difficult to adapt to the needs of the society, and then the lack of maintenance workers, at the same time the maintenance cost is relatively expensive, there will be serious jamming, there will be operation failure.

In terms of batteries, it will be affected by a variety of failures, mainly reflected in pure electric vehicles and hybrid vehicles, the working principle of the motor is mainly to convert energy, and the role in the transmission system may be to ensure power switching.

In winter, the battery life is not particularly good, and it is impossible to achieve self-driving travel, which may be very fatal for everyone.

Hello, the basic method of diagnosing a car breakdown:

1. Ask the user: the time and phenomenon of the failure, the situation in the internal information slip at that time, the reason for the failure, and whether the capacity has been overhauled and disassembled.

2. Initially determine the scope and location of the fault.

3. Call up the fault code and find out the content of the fault.

4. Carry out maintenance according to the fault range displayed in the fault code, especially pay attention to whether the joint is loose or fall off, and whether the wire connection is correct.

5. After the overhaul is completed, it should be verified whether the fault has been eliminated.

6. If the fault code cannot be called, or the fault content cannot be found after the fault is called, the fault range will be roughly judged according to the fault phenomenon, and the method of checking the working performance of the components one by one will be used to eliminate it.

Hope it helps, thank you!

Hello The method of car fault diagnosis can be summarized into 12 types: the method of looking and asking, the observation method, the auditory method, the test method, the touch sail method, the smell method, the substitution state containing the caution method, the instrument method, the measurement method, the segmented inspection method of the Yamato Bureau of the old high part of the disassembly method, etc.