-Why does TSLA not use a single battery with larger capacity?

Why does TSLA not use a single battery with larger capacity?
author:enerbyte source:本站 click508 Release date: 2023-02-24 16:40:26
abstract:
1. Voltage: The working voltage of normal lithium-ion battery is 3.7-3.85V. No matter how large the capacity of a battery is, it is the same voltage. The voltage of electric vehicle is hundreds of volts; 2. Current: When the battery is required to output large current, the t...

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1. Voltage: The working voltage of normal lithium-ion battery is 3.7-3.85V. No matter how large the capacity of a battery is, it is the same voltage. The voltage of electric vehicle is hundreds of volts;

2. Current: When the battery is required to output large current, the temperature rise of the battery is very high, which is very likely to fuse the lug and other components;

3. Safety: The current cylindrical battery is small in size and low in capacity. Even if a fire does not cause vehicle damage or death, if it is a whole fire, it is equivalent to a bomb;

4. Manufacturability: If it is a battery, all processes require customization of machinery and equipment, and most of the existing equipment cannot be used

5. Service life: a small number of defects in the large area of the electrode will deteriorate rapidly after a certain charge and discharge, resulting in a rapid reduction of the battery service life.

6. Cost: When a large battery is made, the yield of each process will be particularly low, not only because of the increased manufacturing difficulty, but also because of a small defect, which can only be scrapped.

7. Technology: no matter from the design or test, the means and methods have become different. It is difficult to carry out effective design, quality supervision and test. The original standards are no longer applicable and cannot pass the safety regulations of various countries and regions;

8. Flexibility: Tesla currently uses a cylindrical battery model of 18650, which is widely used in various electric vehicles and other power supplies and can be flexibly combined.

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