BAIC EX3 has the most energy dense battery

BAIC EX3
BAIC EX3

The Chinese electric car BAIC EX3 was recently upgraded and is now powered by a NCM battery made by Guoxuan with an energy density of 200 Wh/kg. This is the most energy dense battery pack to power a mass produced electric car.

Guoxuan is already known to produce the most energy dense cobalt-free LFP (LiFePO4) batteries, now this Chinese battery cell maker – partly owned by Volkswagen – proves that it can also make extremely energy dense NCM batteries.

 

Since its launch, this electric car – that resembles a Chevrolet Bolt EV – already had three editions, 2019, 2020 and now 2021. While the price of the new 2021 edition isn’t known yet, the previous 2020 edition had a starting price of 119.900 yuan (15.439 euros).

 

Let’s see some details of the BAIC EX3.

 

BAIC EX3 (BJ7000USD8-BEV)

  • Length: 4.200 mm
  • Width: 1.780 mm
  • Height: 1.638 mm
  • Gross weight: 1.940 kg
  • Curb weight: 1.540 kg
  • Maximum speed: 150 km/h
  • Range: 470 km (NEDC)
  • Energy density of battery: 200,22 Wh/kg
  • Consumption: 13,6 kWh/100 km (NEDC)
  • Battery type: ternary lithium ion battery (NCM)
  • Motor type: permanent magnet synchronous motor
  • Motor peak power: 120 kW and 240 N.m of torque

 

Battery details

  • Capacity: 63,3 kWh
  • Weight: 315 kg
  • Energy density: 200,22 Wh/kg
  • Maker: Guoxuan
  • Type: NCM

 

For comparison, the NCM 712 battery made by LG Chem that powers the new Renault ZOE has a total capacity of 55 kWh and weighs 326 kg.

A lighter battery not only contributes to make electric cars more efficient, but also contributes to make them cheaper, since fewer raw materials were used in production.

 

Anyway, how does this NCM battery pack compares to the LFP technology produced by Guoxuan?

 

Guoxuan’s LFP battery cell evolution

  • 2009: 95 Wh/kg
  • 2015: 140 Wh/kg
  • 2019: 190 Wh/kg
  • 2020: 212 Wh/kg (191 Wh/kg at pack level with JTM)
  • 2021: 230 Wh/kg (207 Wh/kg at pack level with JTM)
  • 2022: 260 Wh/kg (234 Wh/kg at pack level with JTM)

 

As you can see, Guoxuan also expects to surpass the 200 Wh/kg mark at the pack level with its cobalt-free LFP battery cells already this year, by using extremely compact and simple cell modules (JTM technology).

 

In China the number of new electric vehicles introduced with LFP batteries is rising extremely fast.

 

While NCM battery cells are more energy dense, at the battery pack level they lose this advantage by requiring more hardware to protect them, since they are inherently less safe than LFP cells. The extra protection hardware not only adds more weight, it also increases costs.

 

 

 

 

More info:

https://ex3.beijingauto.com.cn/

https://en.wikipedia.org/wiki/BJEV_EX3

https://www.miit.gov.cn/zwgk/zcwj/wjfb/gg/art/2021/art_46c42489a9ff4a72a99918eead556176.html

Pedro Lima

My interest in electric transportation is mostly political. I’m tired of coups and wars for oil. My expectation is that the adoption of electric transportation will be a factor for peace and democracy all over the world.

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Ricardo
2 months ago

Any plans for an european factory by Guoxuan?

Rodri
2 months ago

Impressive. So the most advanced battery is in a 15.000€ car. This is unexpected and disruptive. Hat off.
And so Guoxuan success is Volkswagen’s. Just yesterday copied all the Tesla strategy for car and trucks (Scania). From 2023 onwards, they go LFP + high manganese for cars, NCM for sport cars and trucks (my guess as it wasn´t confirmed), cell to pack, car structure-battery integration, vertical integration of cell R&D and production with 3 labs and 6 cell factories.

sola
2 months ago

What type of cooling system does it have?

It isn’t worth much if it doesn’t have a proper cooling system which ensures longevity.

Freddy
2 months ago
Reply to  Pedro Lima

Hope those 70 minutes from 10 to 90% are majorly on the upper 80-90%…. otherwise DC charging is anything but fast…. looks like my 18′ Leaf 40kwh with rapidgate 😛

Sams
2 months ago

One thing I don’t get is why do they produce the EX3 with NCM batteries at all, if Guoxuan already has LFP batteries that are as dense in energy? According to what you regularly write in here, NCM have several issues (heating management, etc) that LFP don’t have, they cost more, and the Chinese government don’t like them anymore. So why not making the EX3 with LFP only?

Freddy
2 months ago
Reply to  Sams

Maybe low availability of LFP from Guoxan at the moment?! or they can offer both sollutions in the future…

Just guessing though…

Sams
2 months ago
Reply to  Pedro Lima

Thanks for your reply, always interesting.

Rok
2 months ago

Dimensions pretty much the same as upcoming MeganE Vision but 120kg less weight. Could the difference be due to better energy density or something else? De Meo claims E Vision has the flattest battery there is so it should be lighter than the one from Zoe.

Freddy
2 months ago
Reply to  Rok

Possibliy but not necessarily… There’s volumetric power ratio and weight power ratio… they are not necessarly linked…

Rok
2 months ago
Reply to  Freddy

I agree with that. It would be nice if manufacturers communicated more data on battery systems. For example, engine in ICE cars weights quiet a lot but on the other hand electric motor is just few 10 kilos. So EV should have weight advantage here which it looses because of heavy battery. It also does not need such a complicated transmission and clutch. So my guess is ICE is 100kg heavier to EV without a battery. So the difference between new 60kWh EV and similar ICE should be 200 to 250kg and not more. But in reality it is more and this is a bit strange. Chassis should not be heavier for EVs.

Sebastian
2 months ago

Hey Pedro, I wonder if you are planning to cover the news from the VW Power Day earlier this week. I would especially love to hear your thoughts on why they chose prismatic cells for their unified cell approach.

Maximilian Holland
2 months ago

Great to see this evolution. 315 kg for 63,3 kWh is remarkable.

Sandro
2 months ago

Nice car! I really hope this car can be sold in EU soon, at reasonable price. Who could open such deal?

Famlin
2 months ago

2 important articles for you. Prismatic LFP seems to be made for each other with more volume in prism and more safety in LFP.

Prismatic battery wins over pouch
https://www.teslarati.com/vw-tesla-battery-day-alarms-battery-suppliers/

LFP battery consolidates
https://www.teslarati.com/elon-musk-tesla-lfp-battery-movement/

LFP-battery China-made sedan comprised 46% of all Model 3 sales in January and a remarkable 32% of the battery capacity in all LFP-equipped cars globally. This trend, Adamas’ data showed, boosted LFP’s overall share in the global battery market in terms of capacity to 18.5% in January 2021. “