31/05/2024
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Quantumscape data shows Fast charges its solid- state cell further than 400 times

Quantumscape data shows that Fast charges its solid-state cell further than 400 times in 15 minutes

  The QuantumScape 4C rapidly charged test cells over 400 times and they are still correct

  QuantumScape has made a strong point with its recent tests.  It submitted single-layer samples of its solid-state cells to charge rapidly at 4C, meaning they would do so in about 15 minutes.  After doing this 400 times, the solid-state battery start ensures that its cells still retain more than 80% of their capacity.  It teased Tesla a bit, though in a seemingly respectful way.

  QuantumScape sought to ensure that people did not doubt the relevance of its findings.  According to the white paper it released, “tests were performed with single-layer solid-state cells made of commercial area (70 ร— 85 mm) and cathode loadings (3.3 mAh / cm2) separators.

  The company says,”At 4C rates, this translates to a uttermost current viscosity of 

13.3 mama/ cm2. To our knowledge, any competitive next-generation lithium-metal cell outperforms anything shown in liquid or solid-state electrolytes.”  At this point, Quantumscape teased SES, saying it didn’t trust solid-state cells: making them too difficult to manufacture.

  According to QuantumScape, those 400 wheels equate to 160,000 miles (257,495 kilometres) in a 400-mile (644-km) range.  However, if you consider that the battery only goes from 10% charge to 80%, the numbers don’t match.  After all, the company is comparing those bicycles to 80% EVs, leaving only 10% of its capacity before charging again.  In other words, you don’t use 30% of its capacity between fast charges.

ย ย 

  The QuantumScape 4C rapidly charged test cells over 400 times and they are still correct

  A battery pack of 430 miles (692 km) can cover approximately 343 miles (552 km) when charging 80% of its total capacity.  It can drive up to 43 miles (69.2 km) (10%) to recharge, resulting in 300 miles (483 km) between each fast charge cycle.  In that case, these 400 cycles equaled 120,000 miles (193,121 km).

  Although these numbers are 25% lower than the quantumscape presented, the company seems to be conservative when it says that the battery retains “more than 80% of its initial power.”  Examining the graphic on the white paper released on these tests shows that the battery has lost only about 10% of its capacity, which puts it at 90% capacity even after these aggressive charging periods.

  To allow us to compare what it represents, Quantumscape has tested the “lifetime performance of a cylindrical lithium-ion cell * cycle from a commercial EV under identical room temperature, quick charge trial conditions.”There’s no single source to what cell it was, but the visual with the results makes it transparent. This is a Panasonic 2170 Li-ion cell  just like Tesla is still using in Model 3 and Model 3.

  QuantumScape examined the Panasonic 2170 Li \ -ion cell and it remained alone

  After submitting to the same fast charging cycles, QuantumScape’s solid-state batteries had to endure, “The cell deteriorates rapidly, falls to 80% of its initial discharge power after just a dozen cycles, and at such high charge rates, it is at risk of catastrophic failure (explosion or fire).”

  This comparison shows why Quantumscape is confident with its technology.  The company believes that having a commercial version of its solid-state cells will give ICE vehicles the experience of regaining power.

  QuantumScape still needs to present A models as SES does and submit to the same tests, and the results presented are really exciting.  We follow its progress towards a commercial solid-state cell.  With the promise of launching mass production by 2024, Startup still has time to follow its goals and honour its schedule.

Recycled lithium-ion batteries work better than new ones !

About QuantumScape

  QuantumScape is an American company that researches solid state lithium metal batteries for electric cars.  The company is headquartered in San Jose, California and employs about 400 people.  Investors include Bill Gates and Volkswagen.

  Prismatic and cylindrical cells are two materials used to build lithium batteries.  In short, cylindrical cells are cylindrical in shape and consume more space.  Due to their low cost, they are the most commonly used cell types.  … Prismatic cells, on the other hand, are designed to be thin and lightweight.

  FAQ

  Q) Who invented the 2170 battery?

Ans. Panasonic introduced “2170” lithium-ion cells, for nickel-cobalt-aluminium (NCA) cathode chemistry, Tesla’s Model 3,

  Q) What lithium company does Panasonic use?

ย ย Ans.The Japanese company has been involved in batteries since 1931 and its first lithium-ion cells were introduced in 2006 for use in automotive (1865-type cylindrical cells).

  Q) .Where are the Panasonic EV batteries manufactured?

ย ย Ans.ย  LFP batteries, 95% of which are manufactured in China, are considered cheaper and safer than nickel-based batteries, but have a lower power density and often need to be recharged.ย  Panasonic’s Auto Batteries Nickel-Cobalt-Aluminum,

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