What can be caused by spontaneous combustion of electric vehicles?

The causes of spontaneous combustion of electric vehicles include poor battery heat dissipation, long-term use in high-temperature environments, aging of internal parts of the vehicle, aging and damage to the wiring, low design requirements of the battery management system, long charging time, and poor ventilation of the charging environment. When the car is moving, the battery is in a state of heat dissipation due to the action of airflow. But when the car stopped, the car stalled and the cooling system stopped working.

At this time, the heat of the battery is not completely dissipated, and the heat is locally concentrated. In addition, the aging of parts can exacerbate the reactions inside the battery, leading to high temperatures and combustion. There are four main scenarios for the combustion of electric vehicles: burning while charging; combustion caused by the operation or placement of the battery; Combustion caused by collision and rollover; Burns caused by wading.

If the design requirements of the battery management system are low, and the car is abnormal during charging, the battery charging system may not send an input signal to stop charging, and it may still charge unscrupulously, which will cause the battery to overheat, leading to spontaneous combustion. Spontaneous combustion occurs when charging. The charging gun of new energy vehicles should not be placed at will, and should be locked when not working.

After the charging cable is inserted into the car, you need to swipe the card first, then stop charging, and swipe the card again. Pay attention to whether the charging pile is leaking. After using the charging station, it must be locked.

If the locking port is damaged, lock the hard hat. When charging, check whether it is charging or not to avoid leakage. For normal charging, for the normal use and life of the battery, and for safety, it is not recommended to turn on the air conditioner while charging.

When buying a car, it is often said that the waterproof level of this battery pack is very high, but it should be noted that this is only the waterproof level of the battery pack, and there are some additional conditions, so the waterproof of the whole vehicle is not very good. So be sure to pay attention to trains during the rainy season. Never start a tram that has been submerged.

It is forbidden to fly in the rain. Be careful when unplugging the charging head. It is a natural static process.

Cars that meet the requirements of the policy are not 100% safe and reliable. Because the actual vehicle transportation condition is far more complicated than the company's own road test. In the case that the overall development of the new energy vehicle industry is still in its infancy, the safety of new energy vehicles is unavoidable.

If the car spontaneously combusts during charging, it may be caused by improper operation by the owner. Every friend must ensure that the charging pile is locked before use. Improper use of charging piles is the main cause of spontaneous combustion.

The charging pile should be energized normally. In order to save electricity, some car owners charge with high-power electricity at the factory where they work. This misoperation can easily lead to spontaneous combustion of the vehicle.

In addition to the tendency to cause spontaneous combustion when charging, the proportion of spontaneous combustion while driving is also large. During driving, the owner may hit the chassis, resulting in battery leakage and spontaneous combustion.

The reasons include poor heat dissipation of the battery, long-term use in a high-temperature environment, aging of internal parts of the vehicle, too long charging time, poor closed ventilation of the charging environment, etc.

1. Short circuit caused by vehicle aging.

In the engine compartment of the car has dense circuits and electronic components all over it, with the increase of vehicle age, the engine compartment has been in a state of high temperature and high heat for a long time, and it is inevitable that the material outside the line will fall off in the long run, which will cause short circuit and leakage of the line in the car, and finally lead to the occurrence of open flames. In addition to the aging of the circuit, the aging of the oil circuit is more dangerous, due to the use of the vehicle in the summer high temperature, the engine compartment temperature in the car is higher than usual, plus some turbine vehicles can reach 800 degrees of temperature, once there is an oil leak The consequences are unimaginable.

2. Miscellaneous items are placed in the car.

For some men who have a habit of smoking, sometimes they will put the lighter in the car after lighting a cigarette. And some ladies also have perfume and other items in the car. In the summer, the temperature in the cabin can reach up to 90 degrees Celsius, and the direct sunlight is likely to detonate the fire.

In addition to this, there is a similar danger of keeping some mineral water bottles in the car, and we all learned that convex lenses can ignite black paper when we were students. In the same way, if the interior of the car is black and the refraction and reflection of water on the seats, it is very easy to ignite the interior.

3. The parking area is not up to standard.

Some car owners who go to the wild always like to park their cars under trees or in the shade, after all, it is good to enjoy the shade under the big trees, but sometimes they ignore the fact that the vehicle is parked near some dry turf, because the vehicle continues to maintain a high temperature state of heat dissipation after driving. If it encounters a dry environment, it is likely to reach the ignition point. Therefore, I also tell everyone to try to standardize parking when parking to avoid unnecessary trouble.

4. Battery quality problems and inadequate maintenance.

Nowadays, there are a variety of new energy vehicles on the domestic market, but some early technologies are not mature, and some car dealers in order to reduce costs do not inspect the vehicles themselves. In addition, the hot weather is that the battery will thermally runaway, many of which are due to the aging of the battery and therefore generate too much heat, plus the battery is used too frequently, so the battery is punctured separator and the internal short circuit.

5. Short circuit of the line caused by later modification.

In addition to the modification of the shape of the vehicle, many vehicles will choose to modify the high-power audio or decorate the interior and exterior of the body with many colorful and beautiful marquee lights or ambient lights. Such a post-modification is not only more individualized, but also some auto repair shops outside are cheaper than the original configuration or 4S shop installation, but the technology is worrying, and it may lead to a short circuit inside the vehicle line afterwards.

1. Aging of the line

Electric vehicles have been used for a long time, and the connection routes in the car are easy to age and short circuit. According to professionals, the connecting wire in the electric vehicle can generally withstand a strong current of about 20 amperes, and if the wire in the car is short-circuited and the external temperature is too high, it is easy to burn. Therefore, when charging an electric vehicle under the scorching sun in summer, the probability of spontaneous combustion of the charger in short circuit will be relatively high.

2. Battery short circuit

Generally, electric vehicles spontaneously combust, and people can easily attribute the cause to the battery, unless the battery is long in life, and the internal circuit is easy to short circuit, causing spontaneous combustion. Another reason is that the battery installation is not standardized, many dealers install the battery, because the battery box is installed too tightly, the connection wires are crossed, and even compressed, which will lead to short circuit heating after long-term use friction.

Triggers battery burning.

3. Excessive charging

Overcharging is also a major cause of spontaneous combustion of electric vehicles. Under normal circumstances, the electric vehicle can be charged for about eight hours to meet the needs of users. In fact, many users directly let the electric car be charged overnight, charging for 12 hours, or even longer in order to save trouble, which will not only have no positive effect, but will reduce the performance of the battery.

The handling method of electric vehicle fire is as follows:

1. Treatment of odor: If there is a burning smell or a pungent smell in the car, it means that the temperature of something is too high, and it will take a few minutes for the plastic parts to catch fire. At this time, you should stop immediately, turn off the engine, get out of the car, and call the 4S shop for help so that professionals can come and deal with it as soon as possible.

2. Treatment of smoke from the vehicle: The battery of the electric vehicle often emits white smoke before it catches fire, and it begins to burn after a few minutes. Therefore, when there is unidentified smoke in the car, you should stop immediately, turn off the engine, and get out of the car.

After getting out of the car, keep a certain distance from the car and call for help**.

Remember not to start or enter the vehicle until the source of the smoke has been identified. In addition, to avoid damage to nearby vehicles, warning signs should be placed behind vehicles.

3. Electrolyte.

Leakage treatment: If there is electrolyte leakage in the vehicle's power battery, it means that the battery cell has been damaged, and there may be a short circuit between the battery cells, and a fire may occur at any time.

Analysis of factors of spontaneous combustion of electric vehicles: Recently, spontaneous combustion accidents of electric vehicles have occurred continuously, resulting in a large number of people** and property losses. After a preliminary analysis, the reasons are as follows:

1. The production quality of electric vehicle batteries does not meet the standards, and the charging process causes high-temperature spontaneous combustion of the battery. 2. The management of electric vehicle storage is chaotic, and some property departments pretend to charge for electric vehicles in a disorderly manner, and an electric car generally has to pay a site fee of about 50 yuan when entering the carport, resulting in the owner being reluctant to put the electric car into the carport and centralized management. 3. The charging facilities are not standardized, the electricity price of the fixed charging pile is doubled and the measurement is not accurate, and the cost is much higher than the residential electricity standard, and the owner complains.

4. The owners of electric vehicles are embarrassed to live and have a fluke mentality, and the owners of riding electric vehicles are mostly salarymen, making money hard, saving fees, charging fees are outrageous, the expenses are not low, and they are unwilling to pay, and they are somewhat paralyzed and lucky about the hidden dangers of charging. The above is a simple exploration of the problem of electric vehicle explosion, the cause is initially found, and a simple analysis is made, and the problem of electric vehicle fire may be solved. Bless us with peace and tranquility every day!

Spontaneous combustion of electric vehicles is a very small probability event, and spontaneous combustion of electric vehicles sometimes occurs while charging, sometimes during driving, sometimes because of aging lines, and sometimes because of overheating of the charger**. No matter what, it sounds terrible, after reading all kinds of information, I think it is still Luyuan reliable, Luyuan 6SC smart charger has a built-in smart chip, and it adopts an intelligent charging mode. It can adjust the charging mode in real time according to the ambient temperature; It will automatically power off immediately after the battery is fully charged, preventing the battery from overcharging and prolonging the service life.

It should be the spontaneous combustion caused by the aging and short circuit of the wire.

1. Charging**.

There are three causes of charging**: BMS failure, thermal management failure, and battery short circuit.

BMS is the abbreviation of battery management system, which has a great role, such as improving the utilization rate of the battery, preventing the battery from overcharging and discharging, and so on.

Battery thermal management is mainly based on the rational design of materials science, electrochemistry, heat transfer, molecular dynamics and other multidisciplinary and multi-field to solve the thermal runaway and thermal efficiency problems caused by the operation of batteries under the condition of too high or too low temperature.

Charging** is mainly due to design reasons, but it is not excluded that the assembly is not rigorous, or the battery falls into some impurities, which may cause thermal management failure and battery short circuit and other problems.

2. Spontaneous combustion. Spontaneous combustion is the cause of thermal management failures and short circuits in batteries. Spontaneous combustion can also be due to thermal management failures and short circuits due to assembly or impurities in battery production.

3. Immersion**.

The design of the vehicle power battery is to fix the battery pack in the battery box, and if the material and structure of the whole system are not up to standard, it will cause trouble, and the welding and assembly in the manufacturing process are not rigorous. Finally, if the battery box encounters collisions and stone strikes, it can also cause structural failure.

In addition to the above-mentioned reasons, it is also very important to have a thermal runaway of the battery due to water immersion - the sealing design is not done well.

4. Collision**.

Collisions can cause structural failure of the battery and leakage of the battery, which can eventually cause thermal runaway. However, in terms of collision avoidance, major electric vehicle manufacturers attach great importance to it, and the box of the battery pack is getting stronger and stronger. But a word of caution, the battery of electric vehicles is mostly designed under the car, which is also one of the parts most vulnerable to collisions.

With the development of society, new energy vehicles are becoming more and more extensive. In fact, it can be understood, after all, fuel vehicles, the pollution of the environment, is too serious, so in order to protect the environment, the country is also vigorously promoting the development and research of new energy vehicles. Among the new energy vehicles, electric vehicles occupy a dominant position and have become the new darlings of the market.

In terms of policy, it has given strong support. However, in the actual experience process, electric vehicles, what we bring to us, is not very ideal, his problem. Very much, especially the phenomenon of spontaneous combustion, because it is powered by the battery as the main **, so he is more likely to spontaneous combustion image, for us, the hidden danger is very big.

Of course, in addition to this problem, there are some other questions, which are also very many, so let's take a brief look at them together. <>

First of all, the issue of battery life, in real life, the issue of the range of electric vehicles has always been the focus of everyone's attention. Yes, although with the progress of science, its mileage is also increasing again and again, but the current state still cannot meet everyone's needs. Neither his true endurance, nor his charging situation, can really solve our needs.

Therefore, in our real life, our use is very inconvenient. <>

Secondly, his service ability, in fact, for new energy vehicles, his service ability, is matched with his market, only the number of shares in the market, more and more, then the service organization, there will be more and more, and in reality, due to the problem of sales, naturally this kind of service organization. There are very few, so for new energy vehicle owners, everyone's service is very inconvenient and troublesome. <>

Of course, there are many other factors besides these factors, which are combined. Therefore, the development of new energy vehicles is slow, and the market is not optimistic, so it is urgent to solve these problems.