English
From providing permanent (uninterrupted) power to IT/communication facilities to energy storage in power generation facilities (especially renewable energy), batteries are core components in many industries today. However, there are certain hidden dangers in the use of batteries, including the risk of fire and explosion. Therefore, early smoke detection and reliable monitoring of explosive and toxic gases are an important part of ensuring the overall safety of facilities, including battery charging rooms.
The electrochemical reaction of charging lead-acid batteries produces highly flammable hydrogen gas (gas evaporation), which has the potential to create an explosion hazard if not properly managed;
Charging lithium-ion batteries may generate too much heat, leading to thermal runaway. When the battery thermally runs away, the pressure rises, a large amount of gas is ejected from the safety valve, and the electrolyte evaporates, which will produce a large amount of toxic gases (carbon monoxide, carbon dioxide, etc.), posing a risk of fire and explosion.
VOC gases such as diethyl carbonate volatilized from lithium battery electrolytes can cause weakness, headaches, dizziness, and nausea when inhaled by the human body. In more serious cases, breathing difficulties may occur, posing a great threat to human life safety.
During the charging process, hydrogen will leak out. Hydrogen is a colorless, odorless, flammable and explosive gas. If the concentration is too high, it will cause serious safety hazards to workshops and factories. When the concentration reaches 4% to 75% LEL, it is extremely flammable in the presence of oxygen and may even cause serious skin burns and eye problems to workers who are exposed to hydrogen.
The best way to solve this problem is to install a hydrogen detector and control panel, and configure an exhaust fan, valve, or horn and flasher. The detector will only start the fan when the concentration reaches 1% LEL, and will also sound an alarm when the concentration reaches 4% LEL. Hydrogen is lighter than air and usually tends to accumulate in the top area. Therefore, the hydrogen detector is installed in the highest, windless position inside the battery compartment, which is 1 to 3 feet above the ceiling.
