Search found 1123 matches

by T1 Terry
Sun, 23 Nov 2014, 15:36
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

48v 16 cell systems Kurt? 4 cell 12v system will stay in balance without any form of balancing attached, so the balance boards work fine on these http://forums.aeva.asn.au/smileys/smiley36.gif 24v systems can be an issue, 48v system are most definitely an issue at the top end of the charge. If you a...
by T1 Terry
Sun, 23 Nov 2014, 10:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

The trick is reducing the current down to 0.8 amps yet charging all the other cells, at the same time. Even a 0.1% out of balance equals a difference at that time of 1.8Ah between the highest and lowest cells and that will take a continuous 2 1/2 hrs to correct with a 0.8a discharge balancer. In the...
by T1 Terry
Sat, 22 Nov 2014, 13:41
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

Good point, I never did the sum to realise 1C is pretty unlikely for this. Makes the performance of battery management systems in EVs, where 1C or 2C is likely, look good. Battery management for house battery has very different requirements to EV battery management. These cells behave differently u...
by T1 Terry
Sat, 22 Nov 2014, 13:29
Forum: Mitsubishi
Topic: Outlander PHEV
Replies: 65
Views: 9663

Outlander PHEV

The 1500kg towing limit will put it outside the average caravanner use range, most of them these days are between 2tonne and 3.5 tonne, a far cry from the early days.

T1 Terry
by T1 Terry
Fri, 21 Nov 2014, 15:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

So for a cell cycled between 20% & 80% SOC only about 0.1v difference? Or just 1.6v for a 16 cell pack. That's less than the voltage drop typical of 1C discharge. Right. But when floating/balancing at 76% SoC using our BMS, the charge current will be throttled back to the balance current of 800 mA ...
by T1 Terry
Mon, 17 Nov 2014, 13:18
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

So the battery management has no sensing of a high cell, just a low cell or is it low total pack voltage it senses?

T1 Terry
by T1 Terry
Mon, 17 Nov 2014, 03:31
Forum: The Lounge
Topic: Membership of the AEVA
Replies: 7
Views: 1236

Membership of the AEVA

Captcha question is still there with no characters in the box, just coloured lines, but it did take my money on PayPal this time, so I'm now a member who can't log in :lol:

T1 Terry
by T1 Terry
Mon, 17 Nov 2014, 01:13
Forum: Members Machines
Topic: 4Springs' Brumby
Replies: 297
Views: 50790

4Springs' Brumby

I cut the wire, strip it back and the wire I wish to splice in stripped back as well, slip heat shrink over the existing wire an the added wire to the end I want the new cable to face, then crimp the 3 wires in a boot lace ferrule and crimp it with a boot lace crimping tool. Then I cut the plastic c...
by T1 Terry
Sun, 16 Nov 2014, 04:43
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

do you have any "D"type cells that I could put in this battery pack to at least get it going for a bit? If/when I get the car I plan to repower it with lithium anyway so the original pack would no longer be needed.... I have heaps - problem is they're all nearly 20 years old, so won't be particular...
by T1 Terry
Sun, 16 Nov 2014, 04:38
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

Hi Terry,    What you do is flatten all the old cells one cell at a time, discharge at maybe 5A until the cell voltage is o.8V, then disconnect the load and do the next. The cells should recover to above 1.1V after standing for a few hours. Any cells that are below 1.1V to start with are probably s...
by T1 Terry
Sat, 15 Nov 2014, 20:04
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

Thankyou sir, much appreciated. do you have any "D"type cells that I could put in this battery pack to at least get it going for a bit? If/when I get the car I plan to repower it with lithium anyway so the original pack would no longer be needed.... is this correct, or does the lithium pack piggy ba...
by T1 Terry
Fri, 14 Nov 2014, 15:01
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

The car is the one you put up the e bay link for a few mths back. The battery is out of the car and partially stripped for what I can make out. If I could get hold of a working battery I could just plug it in and check that it drives ok and no fault codes come up. Does the whole system rely on that ...
by T1 Terry
Fri, 14 Nov 2014, 03:57
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

Hmmm.... How do I know if there are any other problems with this NWH10 Prius if the battery pack is out of the vehicle with dead cells? I don't want to spend the $$ for 40 cells so I can find out if it has other issues or not, can anyone think of another way around this problem?

T1 Terry
by T1 Terry
Wed, 12 Nov 2014, 14:14
Forum: The Lounge
Topic: Membership of the AEVA
Replies: 7
Views: 1236

Membership of the AEVA

Thankyou Eric. I even tried the blurred vision thing where you can see pictured within a random pattern, but it just made my headache. Margaret even tried it and she could see Weber's picture on his living room wall within a few mins but she couldn't make anything out of it, so I'm guessing the code...
by T1 Terry
Wed, 12 Nov 2014, 13:38
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

Thanks for the link, how many sticks are there is a complete battery? I see the new sticks are 10Ah and the original sticks were 6.5Ah, so a mix and match is going to lead to reverse charged cells very quickly.

T1 Terry
by T1 Terry
Wed, 12 Nov 2014, 13:35
Forum: The Lounge
Topic: Membership of the AEVA
Replies: 7
Views: 1236

Membership of the AEVA

The system will not allow me to enter via my forum logo, so I guessed I needed to fill in an application for membership. I got as far as the captcha code at the bottom and I can't decipher what the hell it's supposed to represent, it's just a swirl of colours.

T1 Terry
by T1 Terry
Wed, 12 Nov 2014, 01:40
Forum: The Lounge
Topic: Membership of the AEVA
Replies: 7
Views: 1236

Membership of the AEVA

What is involved in becoming a financial member of the AEVA? I've seen the different classifications under a members name but only realised there was more to it after reading a post on the forum transfer thread.

T1 Terry
by T1 Terry
Mon, 10 Nov 2014, 13:43
Forum: Members Machines
Topic: Antiscab's NWH10 Prius plugin Lithium conversion
Replies: 176
Views: 29968

Antiscab's NWH10 Prius plugin Lithium conversion

As the car is already an EV hybrid and registered as such, will a new engineers certificate be required? I'm tossing up between the Electrolux and a 2004 model Prius with crook batteries. The cost of getting either of them to my place is roughly the same, but the Prius is still driveable and registe...
by T1 Terry
Wed, 05 Nov 2014, 10:50
Forum: For Sale/Wanted
Topic: 2012 iMiEV for sale
Replies: 29
Views: 3363

2012 iMiEV for sale

You want to try it when the car hitting you from behind is doing 125km/h and doesn't hit the brakes, not a good result I can assure you. Still fighting NRMA after 10yr for accident compensation, they fix the vehicle quick enough, but not the injured people involved.

T1 Terry
by T1 Terry
Wed, 05 Nov 2014, 10:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

but seriously, would you really need to be all that accurate with temperatures etc? I suppose so, since the two options would be pretty close, otherwise it would be obvious by inspection which option would be better. My thinking was, if you're going to simulate the panels to the level of individual...
by T1 Terry
Tue, 04 Nov 2014, 01:57
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

Ouch    http://forums.aeva.asn.au/smileys/smiley18.gif I see the MPPT topic is even dangerous on this forum http://forums.aeva.asn.au/smileys/smiley36.gif The reason I was going down the 2 panel in series path V the 3 panels in series and trying to show the gains were not that critical was a work a...
by T1 Terry
Mon, 03 Nov 2014, 20:44
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

Once the system is designed to produce enough input to equal the output plus a bit to get the system back to full after non optimum days, then any gain due to reduced operating temp and use of a complex controller will achieve what? The battery fully charged 20% earlier in the day? I can't see wher...
by T1 Terry
Mon, 03 Nov 2014, 13:32
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

Terry, You seem to be missing the fact that an MPPT controller doesn't simply "lose" voltage (as a PWM controller does), an MPPT controller turns excess voltage into additional current . As Kurt said, if your system is designed so it has just enough voltage to fully charge your battery in the hotte...
by T1 Terry
Mon, 03 Nov 2014, 03:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

"something the MPPT supporters have been denying " I think you will find most people will say the opposite to some degree depending on the design of the MPPT charge. Still the few watts (say 40 -100w) depending on the size of the array and the efficiency of the mppt controller. Is way better that g...
by T1 Terry
Sun, 02 Nov 2014, 15:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2659
Views: 605550

PIP-4048MS inverter

Coulomb and I pulled all the PCBs out of the inverter today and traced the battery voltage sensing circuitry in both the inverter and the MPPT charger. We have scaled the voltage by 10% (52.8 V will be read as 48 V) in the inverter/genset-charger. The PV-MPPT-charger had us on a wild goose chase fo...