As we all know, after the introduction of the new national standard for electric vehicles, the industry lithium ionization process accelerated, especially the 300 million "lead lithium" massive market, lithium battery industry is gradually open a "new situation" ."
Data show that in 2020, China's lithium-ion electric two-wheeled vehicle production will reach 11.36 million units, the overall penetration rate will reach 23.5%, an increase of 84.7%. It is expected that by 2025, the market penetration rate of the all-lithium-ion version of electric two-wheelers will be close to 60%.
Meanwhile, this year, for the first time, two government work reports have included carbon peaking and carbon neutrality in the government work report. In the context of carbon neutrality, electric vehicles, as a rigid demand for people's livelihood, are important to accelerate the realization of the "double carbon" goal in domestic cities, and lithium batteries as the main power source will also usher in a new stage of leapfrog development.
Despite the rapid development of the market, but the full realization of lithium ionization is still difficult. On the one hand, many speculative gold diggers flocked to the market, resulting in lithium battery market products fell; on the other hand, the battery business and consumers have limited knowledge of how to safely use lithium batteries, resulting in lithium battery safety issues become the industry "time". Bomb"!
In the recent Chengdu electric car elevator explosion accident, the tragic scene again exposed the problem. "Safety" is an inescapable problem of lithium batteries really popular, but also the primary problem.
Why lithium battery safety accidents occur frequently, what are the factors behind? Lithium battery is really so "unsafe"?
The truth is that the main cause of lithium battery fire and explosion is thermal runaway, the causes of thermal runaway is generally divided into three categories, external factors, internal factors and human factors.
External factors include: extrusion, impact and other external factors cause lithium-ion battery short circuit; external short circuit of the battery leads to excessive heat accumulation in the battery; excessive external temperature can lead to SEI film and cathode material decomposition.
The main internal factors are: internal short circuit caused by defects in battery production; improper use of the battery will lead to internal lithium dendrites to short circuit the positive and negative electrodes.
The main human factors are: poor charging habits, improper use, private installation of anti-theft devices, etc., resulting in excessive electrical load, short circuit caused by fire and explosion; private modification and installation of batteries resulting in internal structural changes triggered by smoke, fire and explosion; products immersed in water without treatment, resulting in battery capacity loss and explosion.
Therefore, the lithium battery spontaneous combustion and explosion that is not safe, is "a rod to dump the boat", too arbitrary, must be rational and sober judgment.
In fact, an excellent, formal quality lithium battery brand, in every aspect of lithium battery production, from the cell, external structure, the entire battery pack, to the entire vehicle system, have done enough homework. With a meticulous and safe design system, the manufacturer minimizes the risk before the product leaves the factory and eliminates any safety hazards!
SayNO and external factors!
"Up to the knife mountain, down to the sea of fire", lithium battery performance harsh test!
Due to the extremely complex use scenario of electric vehicles, sun, rain, water, drops, overcharging, mixed charging and other problems are almost inevitable.
In this regard, the regular lithium battery products in the factory will go through a strict test "on the knife under fire" to avoid the hidden dangers caused by external factors. Test items include heat resistance, vibration resistance, impact resistance, resistance to free fall and other environmental adaptability; overcharge protection, over discharge protection, short circuit protection safety performance; resistance to heavy impact, thermal shock, overcharge, short circuit and other safety performance; storage; performance, etc.
Take the battery high temperature test as an example. In the test, the ordinary lithium battery brand will be fully charged battery pack into the high temperature test box, to 3-7 degrees Celsius / minute rate of heating. The temperature rises to 130 degrees Celsius to start timing, and maintain the temperature range of about 130 degrees Celsius for one hour, still no air leakage, no fire, no explosion.
With layers of protection, even if the battery system encounters extreme conditions such as short circuit, extrusion, overcharge, drop, heat, and water immersion, regular brands can guarantee safety.
And internal factors SayNO!
Eliminate the defective products on the production line!
Some small brands of lithium batteries in the production process to cut corners, the use of poor quality aging batteries, no effective protection plate, resulting in poor consistency of lithium battery products, especially without the BMS management system and other core technologies to support, they are a little careless, it is easy to explode.
Many people do not know, in fact, the BMS management system is particularly important for lithium batteries, equivalent to the human brain. To prevent the internal short circuit of high-quality lithium batteries, the intelligent battery management system will be designed to comprehensively improve the stability and voltage resistance of lithium batteries, protect them from various abnormalities, achieve intelligent charging and have the advantages of discharge and charge current adjustable.
Lithium battery equipped with BMS management system is like a knight in armor. And bare-chested knights fighting on the battlefield, it must be safer to have a knight in armor.
And human factors SayNO!
Choose a regular lithium battery brand, and develop good habits of use!
Some users are obsessed with the pursuit of long range, private modification of the battery, or the use of cheap and inappropriate chargers, resulting in increased battery discharge current, resulting in the heat of the battery core, high temperature leads to shrinkage or complete damage to the internal diaphragm of the battery core.
As many electric vehicles on the market are factory-set for lead-acid batteries, and through the entire vehicle consistency certification, once the unauthorized modification of power components or installation of lithium batteries, in the driving process will cause the battery line overload overheating. . Spontaneous combustion events.
At present, the regular large brand of lithium-ion vehicles on the market can adopt dual electric parallel technology on their own, can be equipped with dual battery products, can set the charging limit and other intelligent features.
In the field of electric two-wheelers, Nine has realized the high safety of lithium battery products and the deep realization of real intelligence. Adopting batteries from ATL Group, the world leader in lithium batteries, the company has accumulated over 300 million lithium batteries under safe management. Experience; equipped with the new self-developed BMS6.0 battery management system, 30+ battery protection upgrades, 20+ battery technology and function upgrades; equipped with professional intelligent chargers and other system security, to further ensure battery safety and battery life.
Through the intelligent lithium battery management system, multiple battery safety protection technologies such as dual overcurrent protection, dual overcharge protection and dual overdischarge protection can be realized, allowing users to understand the status of lithium batteries in real time and judge in advance, so as to avoid accidents in a timely manner. 9 provides a set of humanized design for consumers in the use of lithium batteries, wanting to customers' worries and customer needs, trustworthy!
In the field of new energy vehicles, BYD's "Blade Battery" increases the energy of the battery pack through further structural design, control design and production design, which ultimately increases the life of the whole vehicle while ensuring safety. GAC Aeon's "magazine battery" also fully ensures the safety performance of the product by increasing the heat-resistant temperature of the battery cells, installing heat-insulating safety compartments between the battery cells, and automatically starting the self-start of the fifth-generation BMS system. Rescue and quick cooling system. .
It can be seen that the industry leaders are focusing on user needs, deepening the upgrade of lithium battery products and technological innovation, to provide the market and consumers with safer and leading lithium battery products.
Safety is the foundation of industrial development. Products without a safety bottom line are inevitably not recognized by consumers, and consumers should not become guinea pigs in the process of lithium ionization.
For consumers, there are 8 considerations for the use of lithium batteries in real life that need to be kept in mind!
1, choose to select the charger that matches the lithium battery.
2. Do not charge below 0°C or above 45°C.
3, it is strictly prohibited to turn the battery upside down.
4, non-professionals do not disassemble the disconnected battery.
5, do not charge the battery indoors.
6. Do not store with flammable and explosive materials.
7. check the battery when it is immersed in water, dropped or hit.
8. if not used for more than 7 days, please remove the battery. If it is not used for a long time, please charge it once a month.
Finally, I call on lithium battery companies to ensure product safety throughout the industry chain, that is, to achieve safety from raw material safety to factory manufacturing safety to consumer use scenarios. I also hope that consumers buy regular lithium battery brands and lithium vehicles to avoid the problem of being "burned".
If you have any demands in batteries, please feel free to contact info@manlybattery.com
