Click to follow Liaoning Fire 2024-07-03 Liaoning
Robot vacuums
Bringing many conveniences to our lives
But it has hidden security risks
It's easy to be overlooked
01
The spontaneous combustion of the sweeping robot caused a fire, and the whole house was blackened
At about 10 o'clock on May 26, a fire broke out in the homes of residents in Room 208, Building 2, Golden Triangle Community, Haimen District, Nantong City, Jiangsu Province.
After on-site investigation, it was learned that the fire site was located in the southwest corner of the living room, and the cause of the fire was the fault of the charging base of the sweeping robot and the ignition of surrounding combustibles.
02
The living room was in shambles, and the cat unfortunately died
In February 2024, Ms. Huang and her husband in Meizhou City, Guangdong Province, were stunned by the scene in front of them as soon as they returned from their hometown! The walls and floors of the whole house were blackened, the sweeping robot in the corner of the living room was burned beyond recognition, and the two cats in the family also unfortunately fell to the ground and died.
It was confirmed by the forensic appraisal agency that the lithium battery wreckage inside the sweeping robot has the characteristics of thermal runaway traces.
▲ Robot vacuum cleaner after being burned
▲X-ray of the wreckage of the sweeping robot
Finally, it was determined that the cause of the fire was the thermal runaway and spread of the lithium battery inside the sweeping robot.
03
A fire in the home is suspected to be caused by a sweeper failure
On February 21, a fire broke out in a 7-story building in CITIC Dongtai Garden, No. 3, Dongcheng Section, Changtai Road, Dongcheng Street, Dongguan City, Guangdong Province, and the party claimed that the initial estimated economic loss was 600,000 yuan.
According to the investigation of the fire department, there is a sweeping robot under the desk after the fire, and 4 lithium batteries in the robot are scattered, one of which is seriously burned and the top cover is off. According to the investigation certificate, on the day of the incident, the sweeping robot started at 8 o'clock and stopped running for only 2 minutes.
Take the lithium battery fire experiment of the sweeping robot as an example
Let's take a look
Let's free our hands-free robot vacuum
How to be the culprit of the fire
Intelligent robot fire experiment
Firefighters will have a robot vacuum
The 12V battery is removed down
Professional technicians on the battery
Retrofit and charge
Simulate a robot vacuum
The power plug has not been unplugged for a long time
and continue to charge the battery
When the battery is charged for about 10 minutes
Firefighters take the temperature of the battery
It was found that the surface temperature of the battery continued to rise
And swelling took place
After charging to 15 minutes
With a "bang".
The battery has deflagrated
After a while, the whole room was filled with smoke
The temperature near the location of the fire was nearly 600°C
"Worry-free" does not mean that you can take it lightly!
All devices that deal with "electricity".
There is a potential fire hazard
You must make sure that people go out of power
Don't leave hidden dangers at home!
Producer: Liaoning Provincial Fire and Rescue Corps All Media Center
Source: China Fire Protection
Editor: Zuo Peiyi
Reviewer: Meng Fanye
Editor in charge: Yin Baihan