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Old 05-04-2021, 09:38 AM   #11 (permalink)
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Originally Posted by cRiPpLe_rOoStEr View Post
Besides meeting global regulations, nowadays a hybrid remains safer in the eyes of the average customer than going full-EV. On a sidenote, considering the cost of high-voltage EV tech, it does surprise me that Honda doesn't even seem to consider the low-voltage hybrid and electric tech developed by Valeo which is often pointed out to allow a more affordable implementation of electrified (either BEV or hybrid) powertrains in general.
When you say "low voltage" are you talking about 12V or 48V?

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Old 05-04-2021, 05:30 PM   #12 (permalink)
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When you say "low voltage" are you talking about 12V or 48V?
I was talking about 48V, even though some BAS-Hybrid setups resort to 12V.
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Old 05-04-2021, 08:35 PM   #13 (permalink)
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Originally Posted by cRiPpLe_rOoStEr View Post
I was talking about 48V, even though some BAS-Hybrid setups resort to 12V.
So far Honda has been using full hybrids. I'm curious if when they go all hybrid in 2025 if that will include 48V mild hybrids.

Bosch, Continental, and Valeo all make 48V systems for OEMs.
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Old 05-05-2021, 08:15 PM   #14 (permalink)
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Originally Posted by JSH View Post
So far Honda has been using full hybrids. I'm curious if when they go all hybrid in 2025 if that will include 48V mild hybrids.
As long as the mild-hybrid approach may suffice to address compliance with the regulations in countries where budget constraints are taken more seriously by the customers, I'm sure this approach will be included.


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Bosch, Continental, and Valeo all make 48V systems for OEMs.
Sure, but Valeo is the only I can remember that is developing full-hybrid 48V setups instead of keeping such voltage only within mild-hybrid tech.
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Old 05-05-2021, 08:43 PM   #15 (permalink)
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Originally Posted by cRiPpLe_rOoStEr View Post
Sure, but Valeo is the only I can remember that is developing full-hybrid 48V setups instead of keeping such voltage only within mild-hybrid tech.
Do you have a link for their 48V full hybrid system? I've only seen the mild hybrids.
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Old 05-06-2021, 05:08 PM   #16 (permalink)
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Do you have a link for their 48V full hybrid system? I've only seen the mild hybrids.
AFAIK the 48V full-hybrid setup is still undergoing tests.

Check the video on this link:
https://www.valeo.com/en/offering-a-...rtrain-system/
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Old 05-06-2021, 11:24 PM   #17 (permalink)
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
AFAIK the 48V full-hybrid setup is still undergoing tests.

Check the video on this link:
https://www.valeo.com/en/offering-a-...rtrain-system/
It's tough to get enough horsepower out of 48V.

1 Hp is about 750W, or around 15 amps at 48V (15 amps works at 50V).

10 HP - 150A

100 HP - 1500A (!!)

The transistors used do have some losses. Power relates to the square of the current. So your cooling system has to get rid of all that heat.

Golf cart style vehicles top out at 500 - 1000 amps for a few seconds, and run in the 100 - 200 amp range when cruising.

I don't think that a freeway vehicle can get enough current out of 48V for long enough to matter. The VW beetle used to get up to 55 mph with .. was it 30 HP? Not many vehicles around that light or with decent aero ...
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Old 05-07-2021, 12:07 AM   #18 (permalink)
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
AFAIK the 48V full-hybrid setup is still undergoing tests.

Check the video on this link:
https://www.valeo.com/en/offering-a-...rtrain-system/
Interesting. I see in another article it is limited to 60 km/h. They have basically taken their 48V mild-hybrid and added a bigger battery to give up to 40 km of slow speed EV use.
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Old 05-09-2021, 01:50 AM   #19 (permalink)
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Originally Posted by JSH View Post
I see in another article it is limited to 60 km/h.
Considering most regular hybrids would kick the ICE in above that speed, it doesn't sound bad.


Quote:
They have basically taken their 48V mild-hybrid and added a bigger battery to give up to 40 km of slow speed EV use.
Seems enough both for compliance with regulations favoring hybrids in Europe and the needs of urban traffic.

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