The electric bike has become everyone's life. Medium
One of the important travel tools
But this easy and fast transport
If you charge or stop
There's a fire
The electric car fire is dangerous
When an electric bicycle battery fires, which often results in explosive combustion, generating large amounts of toxic, high-temperature smoke, the fire will spread rapidly in a short period of time when the surrounding pile of flammable material is ignited. The majority of electric bicycles are now lithium batteries, the main cause of which is short circuits. In the course of use, collisions, modifications, battery quality failure and mixing of different brands can cause internal damage to batteries, and even in non-charged, non-used state, damaged batteries can have internal short circuits that trigger fires. When charged for long periods or overnight, the risk of internal short circuits increases. At the same time, most parts of electric cars are plastics, which, if set on fire, produce a large quantity of toxic smoke。
Four words are used to describe the dangers of electric bicycle fires: speed, heat, poison, blast。
The term “fast” refers to the rapid rate of combustion; “hot” refers to the high temperature generated during combustion; “toxic” means the likelihood that large quantities of toxic gases will be generated during combustion; and “flost” means that batteries of electric bicycles will explode after burning and heat。
The risk of burning electric bicycles inside the building is multiplied by the widespread use of high-molecular flammable materials in electric bike bodies, encirclements and cushions, with temperatures of up to 200 degrees celsius in 90 seconds after the start of the fire, 120 seconds after the explosion of the electric vehicle, and the smoke will cover the entire building, releasing large amounts of toxic fumes and spreading rapidly, causing poisoning and death in a short period of time。
In addition, there is a risk that electric vehicles within the building will set fire to piles of impurities or electrical watch boxes, and the actual flame temperature and flue gas concentrations are much higher than those of the experiment. The electric vehicle fires also produce large amounts of toxic gases, such as hydrogen sulfide and carbon monoxide, which can lead to nausea, sleeping, confusion, etc., the extent of which can be expected if people are evacuated from the building。
The security of electric cars
01
It's too long to charge
The longer the electric vehicle is charged, the higher the temperature of the shell of the charger, and some people will charge it all night for a long period of time, or more than 10 hours, with a high risk of fire。
02
Outdoor flight wire charge
The electric bicycles are engaged in private out-of-the-house powering of wires, which are exposed through sun and rain, and are prone to leaks causing fires, which are more likely to occur if the wire is ageing or if the electric vehicle itself has a bottle problem。
03
Indoor charge
Some of the vehicles are parked or charged for electric vehicles in public areas, such as common roads, stairwells and safe exits. In the event of an accident, the escape route is directly blocked, with high vulnerability to casualties。
04
Use of poor quality chargers
Low-priced and low-quality chargers cannot protect themselves and cut off their electricity without heat fans and radiators。
05
Infringement of electric vehicles
Some of the vehicles were automatically retrofitted to power the electric vehicle, damaged the safety of the entire electrical circuit, and were charged with the risk of malfunctioning the vehicle's electrical circuits, short circuits, etc., resulting in a relative increase in the probability of fire accidents。
Fire prevention measures
At present, most public electric bicycle charging stakes have smart detection and blackout protections that can cut power when electrical circuits or batteries fail. The owner shall immediately cease charging, proceed to the regular maintenance point for testing and replace the original model batteries and accessories of the original vehicle when he finds that the charge is unchargeable, when the battery is overheated, has plastic heating or the taste of the coke。
For the owner of the electric car
Safe use of electric vehicles
We need to focus on these aspects
Depending on the capacity of the cylinder, the normal electric vehicle is fully charged within 8-10 hours. It's better to charge it during the day, with a lookout。
The parking of electric vehicles or charging of electric bicycles in public areas, such as public entrances, evacuation corridors, stairwells, empties, safe exits, etc. In residential buildings, as well as the taking of electric car bottles to charge at home, and the “updoor entry” of electric vehicles are strictly prohibited。
The electric vehicle shall be charged in the central charger area set up in the property unit and shall not be charged by “flyline”. In the rainy weather, electric vehicles are not charged in open conditions。
Flammable flammable materials, fireworks and fireworks or open fire shall not be laid around electric bicycles and charging sites. When charged, electric vehicles are kept away from flammable and explosive articles in order to prevent them from causing a greater risk by burning articles in the vicinity at the time of the fire。
Electric cars are not self-contained with sound, lighting, etc., and cannot modify or repair batteries。
The purchase of electric vehicles should be based on the choice of a nationally qualified production label, rather than on the purchase of non-existent or hypocritical electric vehicles, to reduce the occurrence of electric vehicle fires from the source。
For property managers
In sub-regions where conditions exist, electric bicycles shall be centralized, charging sites shall meet fire safety conditions, charging facilities which meet the safety requirements for use of electricity shall be installed, and fire separation measures shall be taken. If it is not possible to set up centralized parking and charging sites because of objective conditions, day-to-day management should be strengthened and inspections and inspections carried out. In the case of outdoor charging facilities, water protection measures are to be improved, shelters are to be set up, water masks are to be installed, etc., and residents are to be directed to the use of charging facilities to protect against current fire. Infringement of electric bicycles and charging of batteries in areas such as stairwells, stairs, evacuation corridors, safe exits, empty floors, front halls, etc. Were detected and stopped in a timely manner。
Property managers carry out timely screening of safety hazards associated with electric bicycles following the rains, focusing on the presence of irregular charging of power lines, the presence of water accumulation in centralized parking areas and, in the event of signs of water entry, the timely contact with the owner of the vehicle for relocation。
Organisation
In accordance with article 47 of the regulations on the safety and security of high-level civil constructions, a fine of up to $10,000 is imposed on public entrances, evacuation lanes, stairwells, safe exits, the suspension of electric bicycles or their charging for electric bicycles。
