2025 button cell battery.Analysis of TESLA battery safety technology

　　Analysis of TESLA battery safety technology

　　Battery assembly structure

　　Since the battery is to blame, let's first understand the situation about it. As we all know, the battery of TESLA electric vehicles uses the NCA series (nickel cobalt aluminum system) 18650 lithium cobalt oxide battery provided by Panasonic. The capacity of a single battery is 3100 milliamp hours (mAh). Generally, the unit we see on the battery is "Ah" time, this is mainly based on the selection of different units based on batteries of different capacities).

　　We are not unfamiliar with this kind of battery. Electronic and digital devices such as laptops use this type of battery. Compared with the battery types used in other electric vehicles, the technology of 18650 batteries is more mature and has more energy than energy (participating in electrode reactions). In terms of the amount of electric energy released by the electrode material per unit mass), it is almost twice that of the lithium iron phosphate battery (BYD e6 (details picture quotation)). That is to say, under the same volume, a battery unit composed of 18650 batteries can Store more electrical energy. This is one of the reasons why TESLA uses this kind of battery.

　　Despite this, it is still difficult to apply this kind of battery to electric vehicles. For example, to meet the needs of an electric vehicle, you need to use many 18650 lithium batteries. This raises a problem to be solved, how to use it? They are combined.

　　The battery unit of the 85kWh MODELS uses a total of 8,142 18650 lithium batteries. Engineers first evenly distribute these batteries one by one in bricks and slices to finally form an entire battery pack. The battery pack is located on the floor of the vehicle body.

　　Although the way of combining these thousands of batteries is considered incredible by the industry, for TESLA engineers, it is just a slightly more complicated arithmetic problem than the problem to be solved next.

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