another new document for Prius... ENERGY

[geminirat]

After clicking on the link scroll to the bottom of the page and download it. You can download it as a PDF or as a Word document.

Wel duh.... Thanks Mark - I got it now. Scroll down.....

[efusco]

> 12V lead acid battery also power headlight

No, that power for the HID headlights originates from the battery-pack. Several sunset photo shoots have proven that. I'll shut off the Prius at 6 bars. Leave the lights on for 45 minutes to an hour. Then when I start the engine back up, it's only at 2 bars.

I'm still against showing the 12V battery alone. It simply doesn't make any sense, since there are other devices that draw electricity too. So, you've convinced me to add a new object (with a one-way arrow). The label will include "12-Volt Auxilliary Battery, Electric Steering, Electric A/C".

No way John, there is zero connection to the HVbatt unless the car is in READY mode. The normally open relay is in open position at shut down.

[john1701a]

No way John, there is zero connection to the HVbatt unless the car is in READY mode. The normally open relay is in open position at shut down.

That relay utilization makes sense; however, it does not explain what I have seen multiple times now. How come I have observed the SOC drop with only the headlights on and have never seen that behavior any other time?

Perhaps there is a secondary connection to the pack for special non-propulsion uses, like the headlights. And maybe it is only for the HID lights, not those with standard halogens.

[efusco]

The HID are 12v lamps, there's no direct connection to the Inverter/HV batt.

Perhaps the large drain on you 12v is causing an immediate draw of the HV upon entering Ready mode such that there would be some drop.

In any case, there is no direct power-off drain from the HV batt.

[john1701a]

The HID are 12v lamps, there's no direct connection to the Inverter/HV batt. Perhaps the large drain on you 12v is causing an immediate draw of the HV upon entering Ready mode such that there would be some drop.

The HID operate 22,000 volts. A converter is clearly needed to bump the voltage up. Where is it and what's it connected to? And the inverter does have a DC/DC module within it, that would allow for a draw from the pack rather than going through the auxiliary.

As for the "immediate" drop, a 4-bar change in less than 1 second is hard to believe... though that would make for a great "jump" ability, being able to instantly bring the 12-volt back to life.

There is obviously a missing piece to this puzzle. Having witnessed the "from 6 to 2 bar" phenomenum several times now, it is clear that the pack is somehow involved.

[usbseawolf2000]

The HID operate 22,000 volts. A converter is clearly needed to bump the voltage up. Where is it and what's it connected to? And the inverter does have a DC/DC module within it, that would allow for a draw from the pack rather than going through the auxiliary.

I think Prius HID is the same one that Toyota use for other regular Toyota. Traditional car with HID also run off 12V battery with its own inverter. I don't think Toyota made a special HID just for Prius so that it could run off 201.6/500 volt.

There is obviously a missing piece to this puzzle. Having witnessed the "from 6 to 2 bar" phenomenum several times now, it is clear that the pack is somehow involved.

Did you have the electric AC/Heater running while doing the photo shoot? Just trying to piece together the puzzle.

[john1701a]

Did you have the electric AC/Heater running while doing the photo shoot? Just trying to piece together the puzzle.

Is is absolutely, definitely, without-any-doubt OFF... which is essential, since I don't want any photo to ever show anything coming out of the tailpipe. I don't want a glow from the Multi-Display & Speedometer illuminating the interior either.

I shut off the Prius using the power button, then twist the lever to turn the lights back on for the series of photos I'm about to take.

As for Toyota not making something special just for the HSD system... they already have, for example the Steering & A/C. We all know that HSD is destined to become a standard offering anyway. For that matter, so is the HID light. Don't you love how Toyota started from scratch? It prevents any of the traditional logic from being concerned applicable by default.

[altaskier]

the concept of kW is well beyond the average non-techy person

It's already on the diagram twice (the two electric motors) and power output is far more relevant that cylinder displacement, especially when comparing between gas and electric motors. So to keep things non-techy, why not report the maximum output of all three motors (ICE, MG1, and MG2) in horsepower?

[Godiva]

Give me some credit Dan. I have opend the link in three different browsers and cannot enlarge it so I can read it. Why am I the only one having trouble? Even if I could read it I'm not sure how much I would understand anyway.

Scroll down and download it as a word doc. Then you can make it as big as you want. When I downloaded it it came in at 77% I popped it up to 100% and that was good. Usually I view at 150%. Nice thing about the word doc is you can edit it. You can't do that if you download the pdf.

[Frank Hudon]

the inverter for the HID are in the headlight assy just below and to the rear of the bulb. There are two one in each light.
The electric steering is already in the new Corolla. Will it be the first with HSD?