With the progress of The Times science and technology, the upgrade of batteries has promoted the popularity of electric bicycles, more and more stable and safe batteries are mass-produced at a cheap cost, and electric bicycles equipped with these batteries have gradually become the first choice for People's Daily travel with the advantages of energy saving, environmental protection and economy. However, in our daily life, it is still often possible to hear the news of spontaneous combustion of electric bicycles, which is worrying. As a manufacturer of electric bicycle batteries, we understand the importance of battery stability and the consumer's need for safety. This article will delve into the causes of spontaneous combustion of electric bicycle batteries, and provide you with treatment methods and daily preventive measures to deal with spontaneous combustion.
The root cause of spontaneous combustion of electric bicycles is mostly related to the internal instability of the battery. Nowadays, most electric bicycles use lithium batteries as the main power source of electric bicycles, compared with traditional lead-acid batteries, although lithium batteries have superior performance, but due to the characteristics of internal chemicals, its inflammability and explosive become a safety hazard. Here we need to understand the characteristics of lithium batteries.
The internal instability of lithium batteries is rooted in their high energy density and complex chemical structure. Although the high energy density gives the battery higher endurance, it also means that a lot of energy is stored inside the battery, and once the short circuit, overcharge, overdischarge and other situations occur, these energies may be released rapidly, resulting in a sharp rise in temperature, causing spontaneous combustion or explosion. The electrolyte used inside lithium batteries is usually composed of flammable organic solvents, and once leaked or in contact with air, it is easy to catch fire at high temperatures. Thermal runaway phenomenon is one of the most dangerous characteristics of lithium batteries, when the battery is over-charged and discharged, physical damage or internal short circuit of the battery, the internal temperature rises rapidly, the heat generated further aggravates the instability of the battery, forming a self-inhibition cycle, and eventually lead to spontaneous combustion. The diaphragm inside the battery is used to prevent short circuits in the positive and negative electrodes, but its material can become unstable or melt at high temperatures, triggering a serious internal short circuit. Especially in the case of external physical damage to the battery, overcharging, short circuit, etc., the chemical reaction inside the battery will be out of control, resulting in high temperature and even combustion. Therefore, the instability of the battery is the main source of spontaneous combustion.
For most people, they do not have too much physical knowledge about the battery, and the user manual provided by the electric bicycle business will hardly look at it, so most people do not follow the correct method when using the electric bicycle, such as arbitrarily disassembly the battery, arbitrarily change the non-compliant battery, and the electric bicycle is often in a state of overcharge or over-discharge. Always park in the sun. And so on, it is easy to lead to a chemical reaction inside the lithium battery, which generates a lot of heat leading to spontaneous combustion of the battery. In addition, when a traffic accident occurs, problems such as the damage of the battery housing, short circuit of the internal circuit, and inferior battery cells may accelerate the process.
1, inferior battery:
2, improper charging: the use of non-original or unqualified chargers, overcharging, overtime charging and other behaviors will increase the internal temperature of the battery, increasing the probability of spontaneous combustion.
3, physical damage:
4, the ambient temperature is too high: the high temperature environment will accelerate the internal reaction of the battery, especially exposure to sunlight or parking in a high-temperature garage, which can easily cause the battery to lose control of heat.
5, battery aging:
1, quickly away:
2, disconnect the power supply:
3, the use of fire extinguishers:
4, call the fire alarm: if the fire can not be controlled, immediately call 119 for professional fire personnel to deal with.
5, warning the surrounding crowd:
1, choose regular batteries:
2, use a compliant charger: use a charger that matches the battery and is certified, avoid overcharging and timeout charging, and try to charge in a well-ventilated environment. But be careful not to charge the electric bicycle battery at home.
3, check the battery regularly:
4, avoid the high temperature environment:
5, avoid external damage:
6, properly store the battery:
7, Follow the safety specifications: