Hybrids: heresy or handy?

Open for any sort of non-technical discussion regarding EVs
antiscab
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Hybrids: heresy or handy?

Post by antiscab »

the prius was probably sent back for evalutaion on what caused the failure, rather than what is needed to fix it.

a german engineer here in china (yes, it really does happen on occasion) was explaining the process for an unusual failure.

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
dc
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Post by dc »

Hi all,
just registered and first post. This is an interesting thread. I've just bought a Gen1 Prius. Haven't got it yet as I need to ship it to Vic from Brisbane. The battery has gone flat so it was cheap. 2.5k with only 80k on the clock.
I've been wanting to build an EV for ages but the costs are prohibitive and I drive 35 km to work - each way - so range was always a concern for me. I currently drive a Daihatsu Sirion 3 cylinder with a gas injection system so as ICE transport goes I don't push out too much CO2.

The Prius has D- cells which I figure I might need to replace. The spec on these has pretty well doubled since the Prius was made so the battery pack would be effectively double the original size.
The minimum direct purchase of D cells is 1000 units so this would be a boot sized layer.
I'll wait and see what the state of play of the batteries is when it turns up. Anyway for 2.5 k I have a lot of goodies.

Dave
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Post by Mr. Mik »

I'm hip deep into learning how to test and recondition these cells at the moment.
Need to build a discharger that allows testing at 100A or thereabouts, interesting project...

So far all sticks have tested at about 6.2Ah capacity at 6.5A (=1C) to 0.9V per cell cutoff level.

The BMS is very interesting and complex. Each cell has a temp sensor in series with all other temp sensors in 1/2 the pack, and 4 additional independent temp sensors in each 1/2 pack.

240 D cells in each battery. (20 sticks x2, with 6 cells in each stick).

Each stick is voltage monitored.
Last edited by Mr. Mik on Sat, 01 Aug 2009, 07:05, edited 1 time in total.
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dc
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Post by dc »

Hi Mr. Mik,

if you discover anything interesting useful let me know.
Are you suing Prius battery sticks?

Dave
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Post by Mr. Mik »

Yes, Prius NHW10 sticks, 4 whole batteries of them.
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antiscab
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Post by antiscab »

Welcome to the forum Dave.

Since the original battery pack in your prius has had it, perhaps you could upgrade it to a plug-in hybrid.
I know of a guy in the states who has put 76 TS-LFP40s in his prius.
a bit of a project though.

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
dc
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Post by dc »

Hi Mik?,

where did you get the batteries from and do you have a Gen 1 Prius yourself?

Dave
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Post by coulomb »

antiscab wrote: I know of a guy in the states who has put 76 TS-LFP40s in his prius.

Oooh!   Image   Any details, like a URL   Image
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Patching PIP-4048/5048 inverter-chargers.
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Post by Mr. Mik »

dc wrote: Hi Mik?,

where did you get the batteries from and do you have a Gen 1 Prius yourself?

Dave


I bought them all from one person who imported seveal Prii from Japan, then replaced the batteries when error messages popped up.

I do not have a Mk1 Prius, but if I am successful at restoring the batteries, then I might buy one with a faulty battery. They are cheap in that state, and apparently nothing much else goes wrong with them. But who knows, they are all just 10 years old and a long list of problems might be about to start due to aging rubber parts. But it's a Toyota, after all, and they might also run for 20 or 30 years longer.

If I cannot make one good battery out of the 4 that I have, then I'll stay well clear of the Prius Mk1.

The sticks (or batteries) will most likely sell really well.

I need to work out how I can test them. Biggest problem is testing their peak current capability. They pack a punch, I saw 100A mentioned somewhere as being the regular current draw during acceleration in the Prius MK1; not sure how close to the truth it is. I am building a rig to test this, it will come in sooo handy for other batteries, too!
There is always a way if there is no other way!
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Simon
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Post by Simon »

dc wrote: Hi all,
just registered and first post. This is an interesting thread. I've just bought a Gen1 Prius. Haven't got it yet as I need to ship it to Vic from Brisbane. The battery has gone flat so it was cheap. 2.5k with only 80k on the clock.

Hi Dave
Sounds like you got a good deal on the Prius! When you say its a gen1 what year is it? I have been looking for a dead Prius myself but not many over here in WA.
dc
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Post by dc »

Hi Simon,

check out the eBay listing Item number: 120450876753

you'll see one every couple of months on eBay with a flat traction battery. This is the third one that I've bid on in the last 3 months.

cheers

Dave
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acmotor
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Post by acmotor »

Neat,
a prius would make a great EV conversion ! Image
iMiEV MY12     110,230km in pure Electric and loving it !
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Post by bga »

Do you like your prius batter(i)ed or fried?

I called toyota about a Gen1 Prius battery as a spare part.

The fellow at City Toyota Perth said about $3,000.00 and they're showing one in australia. They were about $10K!
--- Much less scary than I thought.

Also, he indicated that the later prius batteries can be replaced one cell at at time, but he had no info on the cell prices or availability.

Bowser only - Heresy   , sorry prius
Pluggable - Handy
Last edited by bga on Tue, 04 Aug 2009, 08:07, edited 1 time in total.
dc
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Post by dc »

I was contemplating buy a whole new lot of tagged D-cell NiMH batteries and spending a weekend with a soldering iron. Minimum purchase from China is 1000 units!
But hey I haven't even got my hands on it yet so we'll see what the go is when I get it.
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Post by Mr. Mik »

dc wrote: I was contemplating buy a whole new lot of tagged D-cell NiMH batteries and spending a weekend with a soldering iron. Minimum purchase from China is 1000 units!
But hey I haven't even got my hands on it yet so we'll see what the go is when I get it.

That would make just 4.1 Prius Mk1 packs.

But I doubt that soldering will be practical or feasible.

The NHW10 "D-cells" are not really D-cells, either! They are very different and of much higher quality than your ususal NiMH D-cells.
There is always a way if there is no other way!
antiscab
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Post by antiscab »

cant find the webpage of the guy with 76 lfp40s.
he merely posted in the thundersky discussion list, and i took his word for it.

i did just see this on ebay though:
prius plug-in kit

get them to send over the electronics and buy the cells here.
its the cheapest prius conversion idea i have ever seen.

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
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Simon
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Post by Simon »

Wow! Yes thats cheap.
I wonder how it can work though with the 2001-2003 model Prius because they have a higher battery voltage? Not many details about how it interfaces with the car computer either.

edit: found bit more information here: enginer.us

FAQ
Last edited by Simon on Wed, 05 Aug 2009, 13:48, edited 1 time in total.
antiscab
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Hybrids: heresy or handy?

Post by antiscab »

i emailed them asking for more information on the dc-dc controller, particularly range of output voltages.

they say it can be used with any hybrid, so that would suggest a wide range of output.
ill see what they say.

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
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Simon
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Post by Simon »

Youtube video of the Enginer Phev kit here
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