My new EV has bi-directional charging. I already have solar and home batteries, but the EV is another source of power keeping me off-grid.

 

The first video is my current setup and the second video explains the different types of bi-directional charging and how to connect an EV to a home solar system.

 

 

 

 

 

 

 

Can you drive to BKK without an overnighter whilst recharging?

7 minutes ago, DILLIGAD said:

Can you drive to BKK without an overnighter whilst recharging?

The BYD Seal has 3 models. I have the AWD Performance model with the bigger 82.5kWh usable battery and 580km range. BKK is 450km away.

 

impressive ... 

Won't get you to CM or Phuket, but most of the country should be no problem.  

~500 kms range +/-

46 minutes ago, KhunLA said:

impressive ... 

Won't get you to CM or Phuket, but most of the country should be no problem.  

~500 kms range +/-

 

The BYD Seal Premium has an efficiency of 7.8km/kWh and can charge at 150kW. So it can add 20km per minute while charging.  A 10 minute charge adds 200km range.

is this highly dependent on the wall charger and supported vehicle? 

I understand the Japanese ChaDeMo charger are better in this respect as it's baked in to the charging protocol 

18 minutes ago, digbeth said:

is this highly dependent on the wall charger and supported vehicle? 

I understand the Japanese ChaDeMo charger are better in this respect as it's baked in to the charging protocol 

 

Did you watch the 2 videos? I covered both of these points there.

21 hours ago, Bandersnatch said:

 

The BYD Seal Premium has an efficiency of 7.8km/kWh and can charge at 150kW. So it can add 20km per minute while charging.  A 10 minute charge adds 200km range.

But the fast charge rate you quote is only available from a Level 3 station (needs 450v plus) so not applicable to your home charger that should be Level 2 (for safety and insurance reasons). The level 2 station does not give you the 10min/200km you quote

I had an EV in Denmark, and found that range shown by the car can not be used for anything. There is too much of a difference in types of driving. For example, range shown with full battery was 330, but driving on motorway at moderate speed would give me 220. At winter with heating on the range is rubbish.
Can you tell me how much A/C affects. I would suspect it uses a lot of energy.

1 hour ago, 7euner said:

I had an EV in Denmark, and found that range shown by the car can not be used for anything. There is too much of a difference in types of driving. For example, range shown with full battery was 330, but driving on motorway at moderate speed would give me 220. At winter with heating on the range is rubbish.
Can you tell me how much A/C affects. I would suspect it uses a lot of energy.

AC uses very little, surprisingly.  Maybe 1-2% per hour, as we leave the dog in the car quite a lot.  And that's with the car on 'ready/full power', so if you somehow got in, you could drive away.  Nothing you'd really notice IMHO

 

screenshot posted here

 

On 11/10/2023 at 8:58 AM, Bandersnatch said:

The BYD Seal has 3 models. I have the AWD Performance model with the bigger 82.5kWh usable battery and 580km range. BKK is 450km away.

 

Until the batteries start to age after 1yr. IMO

On 11/10/2023 at 5:35 AM, Bandersnatch said:

I already have solar and home batteries, but the EV is another source of power keeping me off-grid.

 

How can an EV be a source of power?

4 minutes ago, Lee65 said:

 

How can an EV be a source of power?

Already explained, quite well I may add.

Simply (must have V2L), plugging in extension cords where needed, staying under max capacity.   Which should easily run a freezer, frig, fan & light, untill power is restored, if an outage.  Or if working with tools or whatever too far away from house to run extensions.

 

If outages are way too common, then may add to use the breaker box option, though TBH, not something I'd bother with, and UP2U of course.   Just nice having an option to keep things running on longer outages.

 

Thankfully we don't have outages where I am.  1 very short one in 5 years here, though work on the line one time, did cause an outage all day.   Irrelevant for us now, since having solar w/battery back up.

 

Doubt if we'll ever use our V2L adaptor at home, maybe while O&A, make coffee at isolated viewpoint.

5 minutes ago, KhunLA said:

Already explained, quite well I may add.

 

 

Apparently you missed my point.  An EV can never be a source of power.  The solar panels were the only source of power Bandersnatch mentioned.  What he describes is the use of his EV as a battery.

 

 

19 minutes ago, Lee65 said:

 

Apparently you missed my point.  An EV can never be a source of power.  The solar panels were the only source of power Bandersnatch mentioned.  What he describes is the use of his EV as a battery.

then why did you ask.

... you better get a really long extension cord, as the true source is the sun.   Good luck plugging in 🙄

 

If you are plugged into your EV, that IS YOUR SOURCE OF POWER.  Sort of irrelevant where that source was supplied power.

 

So your AA batteries are not a source of power, but the factory where made & charged up, or would it be the nuke plant down the road powering the grid to the factory.

 

I now have this image of you shopping:

... 'excuse me, do you have any portable power from the nuke plant down the road?'

I see your point.  Semantics.

 

Never-the-less, if we're going to be reasonably, usefully, accurate, an EV is never a source of power.  While the solar panels are.

 

while it's accurate to refer to battery in EVs as a storage of power if you want to be pedantic, 

petroleum based fuel are essentially store of power from the sun too with plant and animals that converted the sun's energy into other forms

 

 

The real world range is always much less. Figure about half the range stated by the manufacturer for real world driving conditions and the average lead foot driver.

 

I think I'll be interested in electric cars once the average battery size hits 100 KWh. This should be good for about 500 km in eco-driving mode.

 

A 100 KWh battery will also make a good supplement to a household solar network. The economics of an electric car really makes sense if you can recharge it via solar generation. But you would really need a similar sized storage battery at home, to take full advantage, and quite a large solar array. Somebody has probably calculated how many solar cells you would need.

10 minutes ago, Stevemercer said:

The real world range is always much less. Figure about half the range stated by the manufacturer for real world driving conditions and the average lead foot driver.

 

I think I'll be interested in electric cars once the average battery size hits 100 KWh. This should be good for about 500 km in eco-driving mode.

 

A 100 KWh battery will also make a good supplement to a household solar network. The economics of an electric car really makes sense if you can recharge it via solar generation. But you would really need a similar sized storage battery at home, to take full advantage, and quite a large solar array. Somebody has probably calculated how many solar cells you would need.

My experience is contrary to that, I can achieve more that the stated range if I drive smoothly. That’s true for 3 different EV’s I have owned.

17 minutes ago, Stevemercer said:

The real world range is always much less. Figure about half the range stated by the manufacturer for real world driving conditions and the average lead foot driver.

 

5 minutes ago, JBChiangRai said:

My experience is contrary to that, I can achieve more that the stated range if I drive smoothly. That’s true for 3 different EV’s I have owned.

Same a JBCR, I consistently get more than the WLTP rating locally, 360 kms vs rating of 320 kms.  Mixed speeds or 30-60-90 kph.

 

Impressed with the 300 kms on open road @ 90 kph, considering almost 2X the WLTP test speed of 47 kph, and not in perfect conditions, using the AC & Cruise control.  At the end of a 3+ hr leg, usually average about 80 kph.  TH not exactly having non-stop inter province roadways.

6 hours ago, kennw said:

But the fast charge rate you quote is only available from a Level 3 station (needs 450v plus) so not applicable to your home charger that should be Level 2 (for safety and insurance reasons). The level 2 station does not give you the 10min/200km you quote

 

Did you realise that I was responding to @KhunLA post where he was showing the range of the car? On a long trip I won't keep popping home to top up the charge on my home wall box,  I will use a fast DC chargers along my route.

3 hours ago, brianthainess said:

Until the batteries start to age after 1yr. IMO

 

"IMO" and your opinion is based upon....?

 

Owning an electric vehicle with an LiFePO4 Cathode  - I doubt it.

 

Maybe you had the same battery chemistry in a solar home storage setup  - unlikely

 

Or do you have an advanced degree in electrochemistry 

 

No clearly your opinion is uniformed and worthless

 

4 hours ago, Lee65 said:

 

How can an EV be a source of power?

 

Decided engagement in this discussion was a complete waste of time

23 minutes ago, Bandersnatch said:

 

Decided engagement in this discussion was a complete waste of time

Yep ...

... another day, another thread, another on that list 🙄

3 hours ago, KhunLA said:

 

Same a JBCR, I consistently get more than the WLTP rating locally, 360 kms vs rating of 320 kms.  Mixed speeds or 30-60-90 kph.

 

 

Oh yes, I agree it is possible to exceed the rating. But I'm talking about the average driver. I can get 20 km per litre highway driving in our 2003 Hyundai Tucson diesel in Thailand (range of 1000 km on our 50 litre tank), but my wife is not a smooth driver and averages 12 - 14 km per litre. Most people will not get anwhere the WLTP rating.

 

Sure, the vehicle is capable of it, but the average driver is not.

42 minutes ago, Stevemercer said:

 

Oh yes, I agree it is possible to exceed the rating. But I'm talking about the average driver. I can get 20 km per litre highway driving in our 2003 Hyundai Tucson diesel in Thailand (range of 1000 km on our 50 litre tank), but my wife is not a smooth driver and averages 12 - 14 km per litre. Most people will not get anwhere the WLTP rating.

 

Sure, the vehicle is capable of it, but the average driver is not.

What are you basing that on? The average driver around the world, according to all the figures I've seen, makes mostly short trips, ranging less than 10km from home. With that kind of urban driving, many if not most drivers can probably exceed the manufacturer's stated range, which is based on a combination of urban and motorway driving.

 

Unlike ICE's, EV's actually get better mileage on short, stop-start driving around town, than on highway driving.

 

Quote

the majority (59.4%) of vehicle trips were less than six miles. In fact, three-fourths of all trips are ten miles or less.

 

In 2017 Nearly 60% of All Vehicle Trips Were Less than Six Miles

16 hours ago, Stevemercer said:

 

Oh yes, I agree it is possible to exceed the rating. But I'm talking about the average driver. I can get 20 km per litre highway driving in our 2003 Hyundai Tucson diesel in Thailand (range of 1000 km on our 50 litre tank), but my wife is not a smooth driver and averages 12 - 14 km per litre. Most people will not get anwhere the WLTP rating.

 

Sure, the vehicle is capable of it, but the average driver is not.

Just because your wife is a lousy driver doesn’t mean everyone else is …

As OP let me remind everyone that this is a discussion about bi-directional charging.

 

Using an EV as a battery on wheels to power your home.

 

My EV has 82.5kWh of useable battery capacity compared to a Tesla Powerwall having only 13.5kWh.

 

This is game changing as you can charge your car up during the day when it’s sunny and draw a few hundred Watts to help run the house at night, while still have enough power drive your car in the morning.

15 hours ago, GroveHillWanderer said:

Unlike ICE's, EV's actually get better mileage on short, stop-start driving around town, than on highway driving.

 

 

In 2017 Nearly 60% of All Vehicle Trips Were Less than Six Miles

NEDC / 403 kms per charge

WLTP / 320 kms per charge

 

Actual 11.3kWh per 100 kms = 409.7 kms

 

10.7kWh per 100 kms = 432.7 kms

 

9.3kWh = 497.8 kms

 

Winner is, (due to very hilly / regen) ...  5kWh = 926 kms 🤣

info about

 

Whilst an interesting video from the op, reading some of his replies I can see why he lives out in the sticks.