Understanding the 4680 Battery in Tesla Vehicles: From Packaging to Capacity
One of the topics that have gained significant attention in the electric vehicle (EV) world is the 4680 battery. Specifically, many enthusiasts and experts are curious about the number of these batteries in a Tesla vehicle. This article will explore the current understanding of the 4680 battery in Teslas, from its design to its practical usage in various models.
From Design to Placement
Based on the dimensions and honeycomb packing method using epoxy bonding, it is estimated that around 960 4680 batteries can be packed into the same space as a Model 3s battery pack. However, as of August 2023, the exact number of 4680 batteries in a Tesla vehicle can vary depending on the specific model and configuration.
Tesla Model Y
The Tesla Model Y, one of the first vehicles to utilize the 4680 cells, is known for its structural battery pack, which incorporates several of these cells. The total number of cells in a Model Y can be estimated to be around 4680 cells, but this may vary depending on the version and battery capacity. For the most precise and updated information, especially regarding production models released after August 2023, it is advisable to check Tesla's official announcements or specifications.
Model 3 and My Configuration
My Model 3 is configured with two types of batteries: a 12-volt battery for ancillary devices and a 350-volt battery for the motor. However, if one asks how many 4680 batteries are in a typical Tesla, the answer becomes more complex. These cells are not directly used in current models, but are a part of future designs.
What About the Actual Numbers?
Exact numbers for 4680 batteries in a Tesla battery pack are not yet known due to their use in prototype vehicles. However, insights from Battery Day suggest that the 4680 cell design improves energy storage by 5 times compared to the current 2170 cells used in the Tesla Model 3.
Battery Day Presentation
According to the presentation at Battery Day, a Tesla Model 3 Long Range battery pack currently holds 4416 battery cells of type 2170, arranged in 46 modules with 96 cells each, providing 80.5 kWh of gross capacity (75 kWh net). The 4680 cell is expected to offer 5 times the energy storage. Therefore, if the 4680 cell can store the same amount of energy in 1/5th the number of cells, it would require approximately 884 cells to match the 2170 cells in capacity.
Comparative Analysis
4680 batteries are much larger than standard AA cells. They are akin to laptop batteries, just significantly scaled up. Therefore, instead of counting the number of individual cells, it might be more accurate to consider them in groups or modules. For instance, a Model S battery pack has 16 modules, each holding six battery groups, with each group containing 74 basic Tesla 18650 battery cells, resulting in a total of 7104 cells.
Conclusion
The answer to the question, 'How many 4680 batteries are in a Tesla, depends on the specific model and its configuration. While the 4680 battery is not currently used in production vehicles, its design aims to significantly improve energy storage and reduce the overall number of cells needed. For the most current and detailed information, it is recommended to follow Tesla's official announcements and updates.