Talking about Lithium Battery Protection Dead Spot

From the dead end of Tesla fire again on the protection of lithium batteries Not long ago, in a car theft in the United States, Tesla caught fire again. What's wrong with Tesla? From the unpreventable safety problem at the beginning, to the continuous fire, and then to the high-speed crash after the recent theft? The technical advantages and disadvantages of the Tesla ModelS The rise of electric vehicles, in addition to the higher grade and better appearance of the car itself, is importantly dependent on the ultra-high-speed functions, control and battery life. These advantages of Tesla ModelS do not come out of thin air. Tesla ModelS has a longer battery life than other electric vehicles on the market because it uses a more dangerous ternary lithium battery. The same weight can supply more power, so the advantage of endurance. Due to the high battery power, it has excellent acceleration function. Tesla has good control. Its battery is on the chassis and its center of gravity is very low. Its engine is on the rear wheels, which is equivalent to a rear drive mounted in the middle. The layout of the car is the same as that of a super sports car, so it has good handling and high quality of trekking. The reason why Tesla dared to use the higher-risk ternary lithium battery is because Tesla has a battery processing system that can ensure the consistency of the battery, handle accidents, and ensure the safety of charging and discharging. This is Tesla’s core skill. . But in addition to charging and discharging, when an external force strikes to form a breakdown, the ternary lithium battery will also catch fire. This is not something that battery handling skills can handle, but physical maintenance. Tesla placed the battery on the chassis, while supplying the advantages of control, it also exposed the most dangerous parts on the bottom of the car. Once the collision at the bottom of the car forms a breakdown of the lithium battery, it will be very dangerous. Tesla is well aware of this and has done a lot of maintenance on the chassis. But in practice, Tesla is not perfect. The safety of electric vehicle batteries As for electric vehicles, battery safety has always been a central issue. The chosen plan varies. Tesla's plan is to focus on the battery processing system, processing each battery, relying on software to handle the safety of charging and discharging, and relying on hard protection to handle breakdown. Choose battery life for high-risk ternary lithium batteries. Tesla has done enough to protect himself from these difficult things. High-strength aluminum alloy, ultra-high-strength steel, bulletproof composite material. He scored the highest in the safety test, colliding head-on with the BMW M5 and suffered only minor injuries to his face. But because of its battery orientation in the chassis, it can be maintained in front, back, left, and right, but the unevenness on the left and right sides and bottom is incompetent. In fact, these Tesla fires came from the sides and bottom. In the recent fire, one side of the car was hit at high speed, causing the car to collapse and the battery to collapse. Similar to Tesla's chassis layout, BYD's E6 (same as Tang's) has the advantages of lowering the center of gravity, improving control and not taking up space in the car. BYD chose lithium iron phosphate to be safer than Tesla's ternary lithium battery. In the famous GTR crash in Shenzhen, it was not the battery but the distribution box that caught fire. But in general, the chassis layout battery is a more dangerous layout. In addition to the bottom layout, another popular layout is the T-shaped layout inside the car, which is used for volanda, Audi r8e-tron and fiskama. The advantage of this arrangement of T layout is that the battery is on the center axle of the car and has almost no influence on control. The battery in the cockpit is kept at the same level as the passengers. If the battery is pierced, the person has an attitude of being hit. Because the battery broke down the fire, it was nothing more than burning again and hitting people's attitudes. However, this layout also has problems. If the battery handling system is not good, it is dangerous to charge and discharge during fire, and not to collide. In addition, the battery in the cockpit takes up valuable space. Ambitious electric vehicle plan Judging from the current technology, Tesla's battery processing technology is still relatively good, and the safety of lithium iron phosphate is relatively high. Tesla's battery handling technology performs well on the more dangerous ternary lithium batteries, and the ternary lithium batteries are also safer on lithium iron phosphate. In the battery layout, the chassis layout still has the advantages of low focus and small space. However, for safety reasons, efforts should be made to make appropriate improvements. Tesla installed the battery in the entire chassis to ensure endurance, not just for safety in the cockpit. The battery caught fire earlier than the person in the accident. Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Flow battery energy storage technology explanation