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?The following is the content directory of the disassembly report of the TSLA#4680 battery cell.

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Preface 4680 battery cell specification parameters overview

Part I Cell Performance Analysis

The internal resistance and voltage of the battery in its initial state (the test photos show the test results),

Battery capacity and energy analysis (charge and discharge experiments),

Cell capacity and energy uniformity test (we only have two sections),

Self-discharge test at different temperatures,

Discharge tests at different rates and temperatures,

Battery DC impedance test,

GITT test (tentative),

HPPC (Hybrid Pulse Power Characterization) test.

Overall scan image of battery cell

Part 2 Cell Structure Analysis

2.1 Battery Appearance

High-resolution photos: positive pole, pole insulation pad, top cover edge, bottom cover edge, negative terminal cover welding, injection hole, positive and negative poles

Solder points, PACK glue, mica sheets, cooling tube insulation glue, etc.

Battery dimensions: diameter, height, positive pole diameter and height, negative terminal cap, filling port dimensions

Total battery mass.

2.2 Disassembly of components

Shell: Shell mass, wall thickness, ?outer diameter, inner diameter, height, thickness of the bottom cover on the positive side

Explosion-proof and liquid injection: liquid injection ?port quality, ?dimensions and structure diagram

Positive electrode: ?positive electrode collector size, shape, welding point, quality, thickness, ?etc.

Negative electrode: ?negative electrode collector size, shape, welding point, quality, thickness, ?etc.

Positive pole: Positive pole, insulation pad size, shape, quality, thickness, ?etc.

End cap: negative end cap size, shape, mass, thickness

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2.3 Battery cell specifications

Battery cell: battery cell diameter, height, mass, and status of the foil on both sides of the full tabs

Termination ?tape: Termination ?tape position, size, length, quality

Core: The hollow inner diameter of the core

The width of the pole piece and diaphragm layout: the diaphragm is larger than the negative electrode, and the negative electrode is larger than the positive electrode.

Layout of pole piece and diaphragm length: the extra length and number of turns of the external diaphragm compared to the negative pole, the extra length and number of turns of the negative pole compared to the positive pole.

The length and number of turns of the separator ?inside the winding core before the negative ?electrode, ?the length and number of turns of the negative ?electrode ?before the positive electrode

Blank space: The size of the blank foil, which exceeds the size of the diaphragm

Electrolyte: ?Pour out the electrolyte ?mass

2.4 Specifications of positive electrode

Total length and mass of pole piece

Pole coating width, blank width, total blank length

Pole thickness; ?Test uniformity? at each position

2.5 Negative electrode specifications

Total length and mass of pole piece

Pole coating width, blank width, total blank length

Pole thickness; Test uniformity at each position

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Part III Battery Material Analysis

Positive and negative electrodes (SEM, EDS),

Diaphragm (SEM, EDS, DSC, Gree number),

Electrolytes (GC-MS, IC and LC-MS),

Insulation glue ingredients,

Structural adhesive ingredients,

Positive busbar connector material

Sampling support button battery, testing capacity,

Pole resistance test, bonding strength test,

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Cut and sample to measure the weight of wet sample containing electrolyte.

The surface density is calculated based on the sample area.

Calculate compacted density based on thickness,

After the sample is dried, measure the sample weight.

The surface density is calculated based on the sample area.

Calculate compacted density based on thickness,

Estimation of electrolyte content

Part 4: Caishendao’s exclusive summary and subsequent technical route prediction

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Prediction of the direction of positive and negative electrode dry process technology (combined with Tesla’s latest dry electrode patent)

Prediction of the improvement direction of the second generation and subsequent 4680 structures

Prediction of the development direction of new 4680 battery pack technology

Bonus: Tesla 4680 battery structure decryption, Tesla 4680 disassembly decryption, Tesla dry electrode technology, Tesla

4680 battery pack technology, Tesla 4680 battery pack technology (update), Tesla cooling technology, Tesla BMS technology,

All materials for nine courses including Monero V2 version 4680 disassembly and decryption, Tesla fast charging technology, etc.

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Part V. Glossary of Abbreviations

Note: Some test items in battery material analysis may increase or decrease due to the condition of the test samples.