Electrovaya Delivers Next-Generation Battery to Dongfeng Motors

3 years ago by Inside EVs Staff 9

Electrovaya

Electrovaya

Electrovaya announced that it has “delivered its next generation of prototype battery packs to Dongfeng Motors in China.”

Dongfeng Logo

Dongfeng Logo

Electrovaya refers to Dongfeng as a “leading Chinese automaker embarked on an electric vehicle program which includes two electric vehicle platforms.”

Back to the next-generation battery.

“Due to ongoing improvements in the cell manufacturing process, this battery has about 20% increased capacity and performance over Electrovaya’s previous DFM prototypes. The battery uses Electrovaya’s proprietary unique non-toxic manufacturing process.”

“Electrovaya’s Lithium Ion SuperPolymer 2.0 battery consists of high energy density cells and Battery Management System along with sub-assemblies of mechanical, thermal, electrical and electronics.”

Finally, Electrovaya says that its battery design enables the same battery to fit both the 2-door and 4-door electric vehicles from Dongfeng.

There’s been no formal announcement as to when these next-gen powered Dongfeng EVs will launch for sale to the public.

Electrovaya Cell

Electrovaya Cell

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9 responses to "Electrovaya Delivers Next-Generation Battery to Dongfeng Motors"

  1. Rudy Clarke says:

    Ahhh, more advanced than the battery pack Nissan makes that currently powers the Venucia e30 (aka Nissan LEAF)????

    1. Mint says:

      Seems so. Here’s a datasheet I found:
      http://www.electrovaya.com/pdf/TR/Lithium%20Ion%20Technology-Overview.pdf

      170-210 Wh/kg, which is about 50% better than those in the Leaf, IIRC.

      Also noteworthy is 10C discharge for 10 seconds, so you could make a 300hp Leaf with the same battery pack.

      It’s so ridiculous that only Tesla and BYD are taking advantage of EVs biggest cost advantage: cheap and light high-power motors.

      1. Ambulator says:

        It appears to still need 20% to 40% more to match Tesla.

        1. Mint says:

          You mean to match Panasonic 😉

          Anyway, cell density really doesn’t matter much, because it’s already beyond what’s necessary for success. Look at how much room the Model S has compared to its ICE competitors.

          The cycle life claims are impressive, though. 9700 cycles of 50% DOD before battery life declines to 80%. That means a 200-mile EV could drive 100 miles each day for over 25 years, approaching 1 million miles! Well, assuming time degradation isn’t an issue.

          1. Anthony says:

            Its easy to see that degradation in the cells isn’t linear though – 1000 cycles at 100% discharge (200,000 miles for a 200 mile pack) vs nearly 10,000 cycles at 50% (1,000,000 miles for a 200 mile pack).

            Though 200,000 miles for a pack is plenty. At that point, just recycle the pack into solar power battery storage system and buy a new pack.

      2. arne-nl says:

        Thanks for the link. Saves me time.

  2. Brainknot says:

    looks exactly the same to a Leaf battery cell, imorovement or just a copy? or do all lithium batteries just fondue packs with tabs?

  3. Ocean Railroader says:

    I give them credit in that at least this battery improvement they are talking about sounds relativistic. Such as a 20% battery improvement would help a little. Such as a Mitsubishi i-MEV would get a range raise from 62 miles to 74 miles while a Nissan leaf would get a raise from 80 to 94 miles on a charge.

    This is at least better then some company saying they got a 300% battery raise and they don’t have anything in production.

  4. muchski says:

    The 7-10% capacity improvements and cost reduction for lithium batteries sound right. Using doubling rule of 72 (divide 72 by percentage) that means approximately every 7-10 years we will double battery capacity while cutting cost in half. That is the background steady rate without assuming major breakthroughs like lithium sulfide and lithium air will be on the market in the next 5-10 years.