CATL kondigt productie aan van 500 Wh/kg batterij

[Micele]

De chinese batterijconstructeur Gotion komt nu met een LMFP batterij, dus Lithium Ijzer Fosfaat (LFP) met een deel - zeer lichte- Magnesium.

Klaar voor massaproductie in 2024. Veel constructeurs zoeken cobalt-/nikkel /-vrije cellen met steeds betere eigenschappen. De LMFP zal zeker een kanshebber zijn.

Het probleem met magnesium zou nu opgelost zijn (zie press release 1e alinea) , 10 jaar ontwikkeling-proberen hadden ze daarvoor nodig.

240 Wh/kg en 525 Wh/liter.

Daarmee komen ze in de buurt van NMC batterijcellen. De betere LFP komen aan "maar" 160 Wh/kg.

Tot 1800 cycli bij hoge temperaturen(snelladen), tot 4000 cycli bij kamertemperatuur.

https://pushevs.com/2023/05/20/gotio...-lmfp-battery/

Let’s see the press release.

New product release:Astroinno L600 battery can achieve a range of 1000km without relying on NCM material

At the opening ceremony, Dr. Qian Cheng, the executive president of Gotion Global, announced the company’s latest product, Astroinno L600 battery. Qian Cheng introduced that in order to break through the bottleneck of energy density of LFP battery, manganese doped as called lithium iron manganese phosphate(LMFP) was developed. Gotion has focused on the research and development of LMFP materials for the past decade. By utilizing co-precipitation,doping encapsulation technology, new granulation technology and new electrolyte additives, it has solved the problems of Mn leaching at high temperature, low electrical conductivity and low press density of LMFP batteries. In addition, the Cleveland Institute in Ohio, USA, has developed a new electrolyte for LMFP, which greatly improves the high-temperature cycling and storage performance. Using in-house developed LMFP materials and electrolyte, Gotion has successfully developed Astroinno L600 battery cell.

“Astroinno L600 LMFP cell achieves 240 Wh/kg in gravimetric energy density and 525Wh/L for volumetric energy density. It can achieve more than 4,000 cycles at room temperature and 1800 cycles at high temperature, easily achieves 18 minutes of fast charging, and pass all safety tests.

Because of the high energy density of Astroinno battery, we can also achieve a range of 1,000km without relying on NCM material” said Cheng Qian, Gotion L600 battery cell are expected to start mass production in 2024.

Astroinno battery pack adopts the sandwich-structure double-sided liquid cooling technology and a minimalist design approach, which reduces the number of structural parts of the battery pack by 45% and lowers the weight of structural parts by 32%. The minimalist electrical design enables the length of the battery pack wiring harness to drop from 303 meters to 80 meters, which is only 26% of that of previous battery packs, but the volumetric cell to pack ratio has reached 76% and the pack energy density has reached 190Wh/kg, outperforming the energy density of NCM batteries currently on the market.In other words, without adopting the NCM battery system, Gotion High-Tech’s Astroinno battery pack has achieved a range of 1000km for the first time in the industry, and achieves over 1800 cycles of 18-minute fast charging.

On paper the Astroinno battery is quite impressive, with good energy density, long cycle life and great fast charging, all this with a cobalt-free chemistry.

Gotion is the most advanced battery cell maker specialized on LFP and LMFP battery cells by far, but it’s CATL and BYD that mass produce most of them. Volkswagen has been Gotion’s largest shareholder since 2020, which is funny, because both companies love to publish press releases about their future products.

Anyway, it’s nice to know that when Volkswagen finally gets serious about electric cars, the German automaker will have a good cobalt-free battery tech to power them. Meanwhile, BYD and CATL are already powering the electric revolution.

https://www.teslarati.com/gotion-hig...24-production/

By Joey Klender Posted on May 22, 2023

Chinese battery maker Gotion High Tech unveiled its new L600 LMFP Astroinno battery today at its annual technology conference and claims it will be capable of 1,000 kilometers, or over 621 miles of range, and will be mass-produced next year.

1,000 kilometers of range is well above the norm by today’s standards, as many EV batteries are capable of roughly 300 miles of range on a single charge.

However, Gotion said its lithium-manganese-iron-phosphate, or LMFP battery, is already performing well above what cells today are capable of and are passing all necessary safety tests.

Gotion also said the potential life cycle of the battery cells is 4 million kilometers, or over 2.485 million miles, which is well beyond the lifespan of a car.

Gotion has been developing the cell for ten years in an attempt to make the batteries commercially viable. Its range is made possible by the new electrolyte additives and state-of-the-art technology that have previously plagued this type of battery from becoming a possibility.

However, LMFP materials, at least in the past, have been subject to low conductivity, low compaction density, and manganese dissolution at high temperatures. They were inefficient and did not perform well in EV applications, which is what companies like Gotion have been working to solve for the last decade.

While LFP (lithium iron phosphate) batteries have become more relevant in mass-market applications within the past few years, Dr. Cheng Qian, Executive President of the International Business Unit of Gotion, said the development of the LMFP cells piggybacks off the LFP movement (via The Independent).

“In recent years, lithium iron phosphate (LFP) technology has regained the recognition of the market with market share continuing to increase. Meanwhile, the energy density growth of mass-produced LFP batteries has encountered bottlenecks, and further improvement requires an upgrade of the chemical system, so [our system] was developed.”

Gotion also focused on efficiencies in weight and wiring. Weight of the cell has been lowered by nearly a third, while structural parts were decreased by 45 percent. Wiring was reduced from 303 meters to just 80.

Volkswagen currently has a supply deal with Gotion, but it is unclear whether the German automaker will be the first to utilize the new cells.

Die 1000 km is de Chinese norm CLTC, ligt zelfs ~35% te hoog tov de realistische EPA uit USA.
De CLTC is zelfs slechter als de achterhaalde NEDC, en ligt 12% hoger als onze huidige WLTP.

https://insideevs.com/features/34323...epa-wltp-nedc/
How To Convert Conflicting EV Range Test Cycles: EPA, WLTP, CLTC

Let's begin by introducing them. The United States uses the EPA (Environmental Protection Agency) test and it produces figures closest to what is seen in real-world tests. The European Union and some other territories rely on WLTP (Worldwide Harmonised Light Vehicles Test Procedure), which replaced the wildly optimistic and now obsolete NEDC (New European Driving Cycle) in 2019. The CLTC (China Light Duty Vehicle Test Cycle) replaced the NEDC in China and is usually the most unrealistically optimistic of the three.

The results were pretty eye opening. The percentage of difference between official range figures varied widely by automaker, and sometimes also widely between models from the same automaker. The upshot is there's not really a reliable way to compare the test cycles with any precision.

As a rule of thumb, though, consider the EPA figure to be the most realistic with only a few percentage points difference from what one might see in real-world conditions. The WLTP figure to be about 22 percent higher than EPA, and the CLTC number about 35% higher than EPA. CLTC also appears to be a few percentage points higher than NEDC.

Maar ook 650 km is blijkbaar "indrukwekkend". Het batterijpack zal wel navenant groot moeten zijn en-of de BEV zal zeker zuiniger moeten zijn dan het gemiddelde.

[chris k]

https://tweakers.net/reviews/11060/n...r-lithium.html