Is Musk trustworthy? Introduce Tesla battery safety technology

OMG, buddy, that's a TESLA, Kaner's new one. If you hadn't seen it with your own eyes, no one would believe that the one on fire was a TESLAMODELS. Prior to this, with the addition of the Roadster model, the cumulative mileage of the mass-produced TESLA electric vehicle has exceeded 181 million kilometers. TESLA seems to prove the reliability of the product in this way. This is the same as when everyone believed that the Titanic was an unsinkable cruise ship. Of course, in terms of technology, Musk did give us a lot of reasons to believe him. Since the battery assembly structure is the fault of the battery, let's first understand the situation about it. As we all know, the battery of the TESLA electric car adopts the NCA series (nickel-cobalt-aluminum system) 18650 cobalt-acid lithium ion battery supplied by Panasonic. At this time, it is important to choose different units according to different capacity batteries). We are not unfamiliar with this kind of battery. Electronic digital devices such as notebook computers use this type of battery. Compared with other battery types used in electric vehicles, the technology of 18650 battery is more mature than energy (participating in electrode reaction). In terms of the size of the electric energy emitted by the electrode material of the unit mass, it is almost twice that of the lithium iron phosphate battery, that is to say, in the case of the same volume, the battery unit made of 18650 batteries can store more electric energy. This is one of the reasons why TESLA uses this battery. Nevertheless, it is still difficult to apply this kind of battery to electric vehicles. For example, if you want to meet the needs of an electric vehicle, you need to use a lot of 18650 lithium-ion batteries, which presents a problem to be dealt with. How to put them together. The 85kWh MODELS battery unit uses a total of 8142 18650 lithium-ion batteries. The engineer first distributes these batteries evenly one by one in bricks and slices to form a whole battery pack, which is located on the underbody. Although the way to pack these thousands of batteries together is considered incredible by the industry, for TESLA engineers, compared to the next problem to be dealt with, it is just a slightly more complicated arithmetic problem. The stability of the 18650 battery Although the 18650 lithium cobalt oxide battery is the key to satisfying the higher endurance mileage, its stability at high temperatures is slightly less than that of the nickel cobalt manganese (NCM) and lithium iron phosphate batteries. Inferior, therefore, strong technical support is needed in terms of safety. Its violent character once caused a lot of trouble. I remember that a few years ago, Sony took a recall action when the battery used in its notebook products exploded. However, the current 18650 battery can technically prevent spontaneous combustion or unexplained explosion. However, after a strong impact, this battery still has a great possibility of explosion. In addition, the adaptability to low-temperature environments is not very stable. In low-temperature environments, lithium cobalt oxide batteries are prone to over-discharge. Overheating conditions. In this way, how to manage these batteries has become a very important matter.