What should pay attention to the fire prevention of electric vehicles?

Ms. Chen, a citizen of Pingdingshan, has always felt that the lithium battery explosion is far away from her. I did not expect that her Jiema electric vehicle lithium battery suddenly exploded and caught fire in the charging process a few days ago. Fortunately, she used a fire extinguisher to put the fire in time. put out. On March 16, Ms. Chen told the media about the scary scene at the time.

Ms. Chen is a salesperson on the second floor of Xinhua Bookstore. On the morning of March 16th, she took out a lithium battery with obvious explosion marks from the counter. She saw a hole left in the explosion on the battery, and the plastic packaging shell was like a sprinkle. A layer of flour. Ms. Chen explained that the white powder is a dry powder sprayed from a fire extinguisher. On the wall that she was charging for the lithium battery, there was also a noticeable pit.

Exploding while charging

Ms. Chen recalled that at noon on March 11, she found that her electric car was running out of power and took the lithium battery to the workplace for charging. Unexpectedly, at 3 o'clock in the afternoon, I suddenly heard a loud noise of "咚". It turned out that the battery exploded and the flames burst out. Fortunately, there was always a fire extinguisher in the bookstore. She hurriedly took the fire extinguisher and slammed the battery, and the fire was extinguished in time.

Ms. Chen recalled that at noon on March 11, she found that her electric car was running out of power and took the lithium battery to the workplace for charging. Unexpectedly, at 3 o'clock in the afternoon, I suddenly heard a loud noise of "咚". It turned out that the battery exploded and the flames burst out. Fortunately, there was always a fire extinguisher in the bookstore. She hurriedly took the fire extinguisher and slammed the battery, and the fire was extinguished in time.

She said with a lingering heart: "Fortunately, there was no one next to him, and no casualties were caused. It was a blessing. If it caused a fire at home, the consequences would be unimaginable." Ms. Chen said that her unit knew that she was charging and exploding in the workplace. I have to pay a fine to her.

The store manager said that he would negotiate with the manufacturer to see how to deal with the matter. The store manager Tao said that the warranty period for the lithium battery of the electric vehicle is two years. Now the warranty period has passed. The factory replied that it can replace a new battery for Ms. Chen, but will not be responsible for the loss of Ms. Chen’s fine. As for the cause of the explosion of the battery, Tao said that it may be caused by too long charging time or improper operation. Since the factory has not tested, it is not easy to make a conclusion.

The following points should be paid attention to in the fire prevention of electric vehicles

1 Always check the circuit plug-in point of the electric bicycle to prevent the contact from being weak and cause heat and heat; avoid the occurrence of short circuit and string electric accident caused by aging and wear of the line. In the normal use of electric vehicles, various types of failures often occur. During the maintenance process, professional maintenance organizations or personnel should be selected. Do not disassemble the electrical protection devices to ensure that the electrical circuits and protection devices are in good condition;

2 The electric bicycle will run out of flammable gas when charging, so the charging must not be in a narrow, sealed environment, and should not be parked or recharged in the stairwell. It should be carried out outdoors, or the battery should be removed and charged separately. When selecting the appropriate line for charging, the line laying should be fixed and installed, and short circuit and leakage protection devices should be installed;

3 Electric vehicle charging must be kept away from flammable materials. It can't be charged for too long. The charging time is too long. The charger overheating is easy to cause fire. When charging, it should be charged according to the instructions. The charging time should not exceed 10 in principle. Hour; when charging, the charger should be placed in a place where it is easy to dissipate heat; if the battery quality of the electric bicycle is inferior or used for a long time, the temperature of the charger is easy to be high, causing a fire, so the charging cannot be taken lightly during the nighttime sleep time. ;

4 When starting and climbing the electric bicycle, the pedal should be assisted to prevent the starting current from being too large and the machine parts to be overloaded for a long time, causing overheating damage to the motor coil, circuit, battery and governor, and even causing disaster. Try to avoid driving on rainy or stagnant waters to prevent the motor from entering the water and short-circuiting when charging.

5 When purchasing an electric vehicle, you must read the product manual and follow the instructions. Also select the battery that matches the electric vehicle, charger, motor model and specifications.

The page contains the contents of the machine translation.