Electric bikes have become everyone's life
One of the most important means of travel
But this convenient and fast means of transportation
If it is not charged or parked properly
It can also cause fires
Electric vehicle fire hazards
Once the e-bike battery catches fire, it often leads to explosion and combustion, producing a large amount of toxic high-temperature smoke, and when igniting the surrounding combustibles, the fire will spread rapidly in a short time. Most of the current electric vehicles and bicycles are lithium batteries, and the main factor causing the explosion of lithium batteries is short circuits. In the process of use, collision, modification, battery quality is not up to standard, mixing of different brands and other situations will cause internal damage to the battery, even if it is not charged and not in use, the damaged battery will also have an internal short circuit and cause a fire. When charging for a long time or overnight, it increases the risk of internal short circuits. At the same time, most of the components on electric vehicles are plastic products, and once a fire starts, a large amount of toxic smoke will be generated.
If you use four words to describe the danger of electric bicycle fire, that is: fast, hot, poisonous, and explosive.
The so-called "fast" means that the burning speed is very fast; "Heat" refers to the high temperature produced when burning; "Poison" is easy to produce a large amount of toxic gas during combustion; "Fried" refers to the explosion of the battery of an electric bicycle after it is burned and heated.
The danger of electric bicycles in the corridor increases exponentially after burning, because the electric bicycle body, fence, and cushion are generally made of polymer combustible materials, and the temperature can reach 200 degrees Celsius in 90 seconds after the fire, and the electric car begins to explode after 120 seconds.
In addition, the fire of electric vehicles in the corridor may ignite the stacked debris or meter box, etc., and the actual flame temperature and smoke concentration are much higher than the experiment. Electric vehicle fires will also produce a large amount of hydrogen sulfide, carbon monoxide and other toxic gases, which will cause people to have nausea, lethargy, confusion and other conditions.
Electric vehicle safety hazards
01
Charging time is too long
The longer the EV charging time, the higher the temperature of the charger shell, and some people will charge it for a long time throughout the night, even more than 10 hours, which is very easy to cause fire.
02
Outdoor flying cable charging
Electric bicycles in the outdoor private wire charging, exposed wires after exposure, rain, easy to leakage caused by fire, if the wire aging or the electric vehicle itself battery problems, more likely to fire.
03
Illegal indoor charging
Some car owners park or charge their electric vehicles in public areas such as shared walkways, stairwells, and safety exits in buildings. In the event of an accident, the escape route will be directly blocked, and casualties are very likely to occur.
04
Use an inferior charger
The low-priced, poor-quality charger only has a cooling fan and a heat dissipation plate inside, and without a protection board, it cannot play the role of self-protection and self-power-off.
05
Illegal modification of electric vehicles
Some car owners modify the power supply of electric vehicles without authorization, destroy the safety performance of the electrical circuits of the whole vehicle, and it is easy to cause overload, short circuit and other faults of the vehicle's electrical circuits when charging, and the probability of causing fire accidents is relatively increased.
Fire precautions
At present, most public e-bike charging piles are equipped with intelligent detection and power-off protection functions, which can intelligently cut off the power supply when the e-bike battery has an electrical circuit or battery failure. When the owner finds that it cannot be charged, the battery heat is too large during charging, there is plastic heating or burnt smell, etc., he should immediately stop charging, go to a regular maintenance point for testing and replace the original battery and accessories of the original model of the original car.
For electric car owners
Use electric vehicles safely
There are a few things to pay attention to
According to the different battery capacity, the average electric vehicle can be fully charged in 8-10 hours. Charging is best done during the day, supervised.
It is strictly forbidden to park electric vehicles or charge electric bicycles in public areas such as public foyers, evacuation passages, stairwells, overhead floors, and safety exits of residential buildings, and do not bring electric vehicle batteries to be charged at home, and it is strictly forbidden for electric vehicles to "go upstairs and enter the house".
Electric vehicles should be charged in the centralized charging area set up by the property unit, and do not charge with "flying wires". In rainy weather, electric vehicles should not be charged in the open air.
Do not stack flammable combustibles, set off fireworks, or use open flames around e-bikes and charging places. When charging electric vehicles, it is necessary to stay away from flammable and explosive materials, so as to prevent the electric vehicles from igniting nearby items when they catch fire, causing greater danger.
Electric vehicles should not be equipped with audio, lighting and other equipment without permission, and batteries should not be modified or repaired by themselves.
The purchase of electric vehicles should choose to have a national qualified production mark, do not buy three nos or fake and shoddy electric vehicles, from the source to reduce the occurrence of electric vehicle fire accidents.
For property managers
In qualified communities, electric bicycles should be parked in a centralized manner, and charging places should meet fire safety conditions, charging facilities that meet the safety requirements of electricity should be set up, and fire separation measures should be taken. If it is impossible to set up centralized parking and charging places due to objective conditions, daily management should be strengthened and inspections and inspections should be done. Promptly discover and stop illegal parking and charging of electric bicycles in stairwells, corridors, evacuation passages, safety exits, overhead floors, first-floor foyers and other areas.
remind
According to Article 47 of the Regulations on Fire Safety Management of High-rise Civil Buildings, parking or charging electric bicycles in the public foyers, evacuation walkways, stairwells, and safety exits of high-rise civil buildings and refusing to make corrections can be fined up to 10,000 yuan.