BYD Seagull gets 5 seats

[giscus[bot]]

BYD Seagull gets 5 seats

The small BYD Seagull, or as it’s known in South America, BYD Dolphin Mini, debuted with 4 seats, however in Colombia it now gets 5 seats instead.
BYD Colombia’s technical documents now show the BYD Dolphin Mini only available with 5 seats. However, we still don’t know if the 4 and 5 seat versions will be sold side-by-side in other markets.
Brazil will soon also get this 5 seat version - that has been long awaited by brazilian potential costumers.

https://pushevs.com/2024/07/02/byd-seagull-gets-5-seats/

[dtmonterrey]

I'm still thorn between LFP and Sodium... I live in a extreme weather region: -5ºC in winter, +40ºC in summer.

[LITUATUI]

You'll be fine with either.

[rgornik]

Pedro, how do you see Sodium against LFP for cars in the longer term? I believe sodium is a no-brainer for stationary solutions but am still torn how far can producers bring sodium solutions for e-mobility. Maybe better density with Al or graphene?

[LITUATUI]

Second generation sodium-ion batteries are expected to reach 200 Wh/kg at the cell level and 180 Wh/kg at the pack level (with CTP technology). LFMP batteries will be around 15 % more energy dense.

For example, the Volkswagen ID 82 kWh (77 kWh usable) battery using ancient modular pack technology weighs 493 kg and has an energy density of 166 Wh/kg. So no problem replacing NCM and NCMA cells with sodium-ion or LFP/LFMP if CTP technology is used.

Anyway, future batteries will charge a lot faster than what we have today, 3, 4 ,6 and even 10 C-rated batteries will become common soon.

Then a 60 kWh 6 C-rated battery that provides 400 km of range and can be half charged (20 to 70 %) in 5 minutes will be more than enough for most people.

With faster charging and better charging infrastrutture EVs don't have to carry around half a ton batteries to be convenient.

[rgornik]

Theoretically, that would save some 40kg of weight. Would it fit in the same bracket, though? What is Wh/L density?

At my company, we are currently in the process of installing graphene-li-ion battery with up to 5C recommended charge rate which I see as a great potential to lower fixed grid costs for fast chargers which are prohibitively expensive right now (0,7€/kWh without subscription). However, I do not see graohene making its way to car cells which is a shame. Though, I guess Al or Si-based cells make more sense due to higher energy density...

[dtmonterrey]

@rgornik isn't graphene already the anode side for all Li-ion batteries?

[LITUATUI]

I think that the next generation of sodium-ion batteries will have a volumetric energy density around 300 Wh/L at the cell level and 200 Wh/L at the pack level (with CTP technology). Indeed inferior to NCM and LFP technologies.

[rgornik]

@dtmonterrey commonly used material for anode is graphite. Graphene has less problems with dendrides etc. and is considered as a super material. Although with the battery we will now start to test we see less energy density (some 160Wh/kg which is quite bad). It is important to mention not many producers are working with this material since it is quite hard to scale its production