Hybrid's - to plug or not to plug

Hybrid's - to plug or not to plug

Author
Discussion

Phil.

4,959 posts

253 months

Wednesday 19th June
quotequote all
paralla said:
The 13.6kWh battery used extensively in Toyota PHEV's weighs 128.8kg. In conjunction with the electric motor, it facilitates revovering, storing and deploying the energy that would otherwise be lost to heat via friction when braking. When the hybrid battery is "flat" it's not just 128.8kg of dead weight being carried about, it's still being used to improve the efficency of the petrol engine even though it might be indicating 0% state of charge.
Out of interest then what is the weight of the latest Toyota hybrid battery? I had assumed it was the 128kg version? Do they use the same battery in their hybrid and PHEV’s?

Evanivitch

20,747 posts

125 months

Wednesday 19th June
quotequote all
Phil. said:
Out of interest then what is the weight of the latest Toyota hybrid battery? I had assumed it was the 128kg version? Do they use the same battery in their hybrid and PHEV’s?
The Hybrid is now a lithium battery (NiCad for years) and is a out 1kWh. So maybe 2 miles range in slow urban conditions.

Phil.

4,959 posts

253 months

Wednesday 19th June
quotequote all
Evanivitch said:
Phil. said:
Out of interest then what is the weight of the latest Toyota hybrid battery? I had assumed it was the 128kg version? Do they use the same battery in their hybrid and PHEV’s?
The Hybrid is now a lithium battery (NiCad for years) and is an out 1kWh. So maybe 2 miles range in slow urban conditions.
So minimal weight compared to a PHEV battery?

otolith

56,983 posts

207 months

Wednesday 19th June
quotequote all
Minimal weight and zero ability to utilise renewably generated electricity.

Evanivitch

20,747 posts

125 months

Wednesday 19th June
quotequote all
Phil. said:
So minimal weight compared to a PHEV battery?
Less weight but not proportionally, as the power and management systems are still required.

paralla

3,657 posts

138 months

Wednesday 19th June
quotequote all
Phil. said:
Evanivitch said:
Phil. said:
Out of interest then what is the weight of the latest Toyota hybrid battery? I had assumed it was the 128kg version? Do they use the same battery in their hybrid and PHEV’s?
The Hybrid is now a lithium battery (NiCad for years) and is an out 1kWh. So maybe 2 miles range in slow urban conditions.
So minimal weight compared to a PHEV battery?
The new 2.0L Toyota hybrids use a 4.08Ah Lithium-ion battery at 3.7V and 60 cells for a total capacity of 0.91kWh. The 2.0L PHEV Toyota's use the 13.8kWh Lithium-ion battery.

I don't know the exact weight of the 0.91kWh battery but their 13.8kWh battery weighs 128Kg. If we assume the 0.91kWh battery has the same energy density as the 13.8kWh battery (because it uses the same chemistry) that means the normal hybrid 0.91kWh battery would weigh 8Kg.

Phil.

4,959 posts

253 months

Wednesday 19th June
quotequote all
I found this Toyota Corolla hybrid spec and I’m impressed with the combined mpg which must be related to the low kerb weight.

https://media.toyota.co.uk/wp-content/uploads/site...


Phil.

4,959 posts

253 months

Wednesday 19th June
quotequote all
otolith said:
Minimal weight and zero ability to utilise renewably generated electricity.
Zero, really? So the battery has no impact on the improved mpg? I don’t think so.

clockworks

5,523 posts

148 months

Wednesday 19th June
quotequote all
Phil. said:
otolith said:
Minimal weight and zero ability to utilise renewably generated electricity.
Zero, really? So the battery has no impact on the improved mpg? I don’t think so.
Assume that was aimed at non-plug-in hybrids.
If you can't plug in, you aren't able to run on "green" electric.

The battery will help to reduce mpg, but all the energy that the car uses comes from petrol. Just that some of it is harvested (regen or whatever) and recycled for assisting the ICE.

A plug-in can do all that, plus actually do some useful work by running some (maybe most) of the time on electricity from renewable sources.

blank

3,507 posts

191 months

Wednesday 19th June
quotequote all
We have an EV and a PHEV.

Day to day use, both run fully EV.
Occasional medium length journeys the EV is favoured.
Long journeys and "staycations" it's the PHEV.

The PHEV isn't as good an EV as the EV (less efficient, not as smooth, slower) but it's perfectly usable and can run fully electric with decent heating and at motorway speeds. You also get the same nice features like pre heating or cooling.


I would recommend a proper charging point even for a PHEV though as you want it to be as convenient as possible to plug in. They need plugging in way more often.

Our PHEV is plugged in probably 10-12 times a week.
The EV is once a week (and could probably be once a fortnight!).

Jimjimhim

348 posts

3 months

Wednesday 19th June
quotequote all
blank said:
We have an EV and a PHEV.

Day to day use, both run fully EV.
Occasional medium length journeys the EV is favoured.
Long journeys and "staycations" it's the PHEV.

The PHEV isn't as good an EV as the EV (less efficient, not as smooth, slower) but it's perfectly usable and can run fully electric with decent heating and at motorway speeds. You also get the same nice features like pre heating or cooling.


Presumably an outside 3 pin socket with your cable left plugged in all the time would do for a plug in hybrid?


I would recommend a proper charging point even for a PHEV though as you want it to be as convenient as possible to plug in. They need plugging in way more often.

Our PHEV is plugged in probably 10-12 times a week.
The EV is once a week (and could probably be once a fortnight!).

blank

3,507 posts

191 months

Wednesday 19th June
quotequote all
Jimjimhim said:
Presumably an outside 3 pin socket with your cable left plugged in all the time would do for a plug in hybrid?
Yeah, but if you're going to do that for a PHEV you may as well do it with an EV.

If you're charging daily and doing low mileage then (all else being equal) an EV will use less energy than a PHEV.

TheDeuce

22,698 posts

69 months

Wednesday 19th June
quotequote all
paralla said:
My guess is that a granny charger through the letterbox is more hassle than she will be willing to deal with, she will just put petrol in it because it's easier. Also to get the most benefit from a PHEV you want to charge it at cheap overnight electricity rates rather than during the saytime.

Like I said earlier, unless plugging it in is super convenient, it won't get plugged in. If it doesn't get plugged in save your money and get a non-plug in hybrid.
I raised an eyebrow at the letterbox thing too!

"It's perfectly simple darling, you just plug into the socket in the kitchen, run the cable down the hall, pop it through the letterbox, get the granny charger in the boot and hook it up"

Or just get a 13a outdoor socket fitted smile

otolith

56,983 posts

207 months

Wednesday 19th June
quotequote all
Phil. said:
otolith said:
Minimal weight and zero ability to utilise renewably generated electricity.
Zero, really? So the battery has no impact on the improved mpg? I don’t think so.
Zero. Really. The energy the battery stores comes from the petrol the car burns. All of it. The petrol is the only energy going into the system. The hybrid system makes it use the energy more efficiently by reusing the kinetic energy put into the car by the engine which would otherwise be thrown away by the brakes, it doesn’t create any or acquire any from outside the car. Toyota’s dishonest marketing has a lot to answer for.

Jimjimhim

348 posts

3 months

Wednesday 19th June
quotequote all
blank said:
Jimjimhim said:
Presumably an outside 3 pin socket with your cable left plugged in all the time would do for a plug in hybrid?
Yeah, but if you're going to do that for a PHEV you may as well do it with an EV.

If you're charging daily and doing low mileage then (all else being equal) an EV will use less energy than a PHEV.
That depends on if you can find a EV that your prefer over a PHEV.

That's interesting about the energy usage, why is that? Is it much difference?

TheDeuce

22,698 posts

69 months

Wednesday 19th June
quotequote all
Jimjimhim said:
blank said:
Jimjimhim said:
Presumably an outside 3 pin socket with your cable left plugged in all the time would do for a plug in hybrid?
Yeah, but if you're going to do that for a PHEV you may as well do it with an EV.

If you're charging daily and doing low mileage then (all else being equal) an EV will use less energy than a PHEV.
That depends on if you can find a EV that your prefer over a PHEV.

That's interesting about the energy usage, why is that? Is it much difference?
I don't imagine there can be much difference. If the EV edges it, I'd assume it's because a more powerful motor and larger battery can achieve higher rates if regen.

Also the designers of EV's probably care more about low drag for the sake of optimal range.

Greedydog

904 posts

198 months

Wednesday 19th June
quotequote all
We have both an EV (Ioniq 5) and a PHEV (Volvo XC60 T8). It goes without saying the EV is a better EV than the PHEV and ideally I’d have liked both to be EVs, but we need the flexibility as my wife is a Dr who whilst doing occasional on call shifts across the region may have to do 300 miles plus in the middle of the winter with confidence without an opportunity to charge.

I use the Volvo for commuting -76 miles round trip, mixed A road, motorway and urban. It’s currently averaging 98 mpg (not bad for a 450bhp heavy SUV). Depending on the traffic I.e. the jams etc. I have seen over 50 miles in EV range in the summer. Ultimately it’s all about use case, if my commute was 100 miles then my average mpg would be much lower, if it was shorter it would be higher. PHEVs are fantastic if you can charge them overnight at home and your usage suits the limitations.

Ankh87

Original Poster:

775 posts

105 months

Wednesday 19th June
quotequote all
TheDeuce said:
paralla said:
My guess is that a granny charger through the letterbox is more hassle than she will be willing to deal with, she will just put petrol in it because it's easier. Also to get the most benefit from a PHEV you want to charge it at cheap overnight electricity rates rather than during the saytime.

Like I said earlier, unless plugging it in is super convenient, it won't get plugged in. If it doesn't get plugged in save your money and get a non-plug in hybrid.
I raised an eyebrow at the letterbox thing too!

"It's perfectly simple darling, you just plug into the socket in the kitchen, run the cable down the hall, pop it through the letterbox, get the granny charger in the boot and hook it up"

Or just get a 13a outdoor socket fitted smile
The front door opens into the hall, there's a socket less than 1 metre away. It's practically behind the door when it opens. It's easy enough for a cable to be fed through, especially during the day time. Would be perfectly fine until we got a proper EV charger installed. Just a slight annoyance for a few months.

Jimjimhim

348 posts

3 months

Wednesday 19th June
quotequote all
Ankh87 said:
TheDeuce said:
paralla said:
My guess is that a granny charger through the letterbox is more hassle than she will be willing to deal with, she will just put petrol in it because it's easier. Also to get the most benefit from a PHEV you want to charge it at cheap overnight electricity rates rather than during the saytime.

Like I said earlier, unless plugging it in is super convenient, it won't get plugged in. If it doesn't get plugged in save your money and get a non-plug in hybrid.
I raised an eyebrow at the letterbox thing too!

"It's perfectly simple darling, you just plug into the socket in the kitchen, run the cable down the hall, pop it through the letterbox, get the granny charger in the boot and hook it up"

Or just get a 13a outdoor socket fitted smile
The front door opens into the hall, there's a socket less than 1 metre away. It's practically behind the door when it opens. It's easy enough for a cable to be fed through, especially during the day time. Would be perfectly fine until we got a proper EV charger installed. Just a slight annoyance for a few months.
Sounds like a right pain to be honest. Are you sure you need a charger? Why not get an outdoor 3 pin socket?

TheDeuce

22,698 posts

69 months

Wednesday 19th June
quotequote all
Jimjimhim said:
Ankh87 said:
TheDeuce said:
paralla said:
My guess is that a granny charger through the letterbox is more hassle than she will be willing to deal with, she will just put petrol in it because it's easier. Also to get the most benefit from a PHEV you want to charge it at cheap overnight electricity rates rather than during the saytime.

Like I said earlier, unless plugging it in is super convenient, it won't get plugged in. If it doesn't get plugged in save your money and get a non-plug in hybrid.
I raised an eyebrow at the letterbox thing too!

"It's perfectly simple darling, you just plug into the socket in the kitchen, run the cable down the hall, pop it through the letterbox, get the granny charger in the boot and hook it up"

Or just get a 13a outdoor socket fitted smile
The front door opens into the hall, there's a socket less than 1 metre away. It's practically behind the door when it opens. It's easy enough for a cable to be fed through, especially during the day time. Would be perfectly fine until we got a proper EV charger installed. Just a slight annoyance for a few months.
Sounds like a right pain to be honest. Are you sure you need a charger? Why not get an outdoor 3 pin socket?
Exactly. And if the existing circuit is so close to the front door... Pull it through and add an external socket.

I suspect doing so might just solve the plugging in debate smile