Rectifier Huawei R4850G2 48V 42~58V 3000w

[vicens]

What do you think of this rectifier?

High efficiency > 96%
Ouput voltage 42~58VDC, default value 53,5VDC
Ouput Power 3000w (176~300VAC)
Weigh =< 2 KG

The datasheet.

https://www.google.es/url?sa=t&source=w ... beGg80zrdg

Where to buy it at a good price.

http://s.aliexpress.com/vMfQbiyu

[amberwolf]

Is it for a fireworks show? To hook across the mains?


We can't really tell you if it's good, bad, or ugly unless you tell us what you need it to do; what project it is for.

You'll need to post up all the details of that project for us to help you with it.

[fechter]

It looks OK, but what are you going to use it for? It sort of looks like it's not really CC/CV so it might not be so good as a battery charger.

[vicens]

Is to charge the battery of my vectrix. 38s22p(sanyo 18650-ga) li-ion battery 10kwh. Charging at 4.1v per cell. Charging 156v cv.

[fechter]

I don't think it will be good for a battery charger. It might work, but you'd be running it at the maximum current during most of the charge so it might overheat or fail early. I didn't see an adjustment for the current limit.

[vicens]

The charging can be at 230v single phase or 400v three phase more neutral.

posible problems. With different plugs and powers:

Slow charging. Connector schuko 16A Single-phase. They can only charge at 12A (2.8kw) continuously. Or charge at 16A (3.7kw) for a maximum of 2 hours. To charge at home. To charge on the street is easy to find.

Semi-fast charging. Connector type 2 mennekes. Single-phase 16A (3.7kw) or 32A (7.4kw). To charge on the street is easy to find.

Semi-fast charging. Connector type 2 mennekes. Three-phase 16A (11kw) or 32A (22kw). To charge on the street is difficult to find.

Fast charging. Connector type 2 mennekes. Three-phase 63A. To charge on the street is very difficult to find.

I have a cable from type 2 mennekes to schuko. Single phase to 16A (3.7kw). Operate on a single-phase and three-phase type 2 mennekes. This cable does not work with the fast charging 44kw mennekes type2. The connector is different. The connector is the longest and does not fit. To use it you have to buy a new connector and cables. it is very expensive.

[vicens]

I don't think it will be good for a battery charger. It might work, but you'd be running it at the maximum current during most of the charge so it might overheat or fail early. I didn't see an adjustment for the current limit.

I will look for another. That the current limit can be selected.

[amberwolf]

Why not use the Meanwell HLG LED PSU series? They are voltage and current adjustable, and potted. (but kinda heavy due to the potting, I think). Fanless, can operate at their ratings continuously AFAIK. About 7lbs each, size of a trade paperback book.

They are isolated, so you can series and parallel them. For instance, the HLG 600 series are 600watt, so at 58v they'll do over 11A. Series two of them for 118v, and 11A. Parallel another set of those and it's 118v at almost 24A.

Adjusted down in voltage to their minimum, you'd probably get the charge voltage you're after with three in series. Or use one set that's a lower voltage model in series with two at the higher.

AFAICR they are 230VAC or 115VAC in.

[vicens]

Why not use the Meanwell HLG LED PSU series? They are voltage and current adjustable, and potted. (but kinda heavy due to the potting, I think). Fanless, can operate at their ratings continuously AFAIK. About 7lbs each, size of a trade paperback book.

They are isolated, so you can series and parallel them. For instance, the HLG 600 series are 600watt, so at 58v they'll do over 11A. Series two of them for 118v, and 11A. Parallel another set of those and it's 118v at almost 24A.

Adjusted down in voltage to their minimum, you'd probably get the charge voltage you're after with three in series. Or use one set that's a lower voltage model in series with two at the higher.

AFAICR they are 230VAC or 115VAC in.

Of the series hgl would put three of 600w. I've been watching him.

But it would be much better some 1000w. With 3 are 3000w.

[amberwolf]

Maybe they make bigger HLGs?

Or you can parallel them, so two 1800w strings for up to 3600w charging. (This was done on a race motorcycle, I think it was at Laguna Seca? Can't find the post though).

[vicens]

Maybe they make bigger HLGs?

Or you can parallel them, so two 1800w strings for up to 3600w charging. (This was done on a race motorcycle, I think it was at Laguna Seca? Can't find the post though).

HLG the largest is 600w

A configuration with two parallels and three series is already done.

http://300mpg.org/2015/07/24/charging-w ... -supplies/

[eee291]

https://dutchrfshop.nl/nl/home/961-huaw ... ruikt.html

In case you need some more, 5 in stock currently.
About 60€ shipped.


EDIT: these are the 2000W PSUs, not 3000W.
If you want the 3000W one you can get it on Aliexpress for about double the price.
https://www.aliexpress.com/wholesale?ca ... ei+R4850G2
You may have to pay taxes as well.

[BotoXbz]

Just dropping by some info:

0x108180fe  01 00 00 00 00 00 xx xx    电压 a6 c0 - ea 67 01 03 00 00 00 00 xx xx    电流 00 00 - 04 e2 波特率125k 扩展帧 数据帧

If you Google 0x108180fe you can find the source.

Also interesting: https://www.yleee.com.cn/thread-62600-1-1.html

I don't have one of these PSUs to test this, but I want to buy one if I can use it to charge my 14S battery with it.

Edit, Jackpot:


OCR:

Code: Select all

0x108180fe      01 00 00 00 00 00 xx xx     电压            a6c0 - ea67
                01 01 00 00 00 00 xx xx     默认输出电压      c000 - e99a
                01 03 00 00 00 00 ii ii     电流            0000 - 04e2
                01 04 00 00 00 00 ii ii     默认输出电流      0000 -

xx xx = 1022 x 输出电压
ii ii = 197 x 输出电流

55.2V = dc 5e
15.0A = 01 27

======================================================================

0x108140fe      00 00 00 00 00 00 00 00
0x1081407f
                01 70 00 00 00 xx xx xx
                01 71 00 00 00 00 xx xx     // cb b8
                01 72 00 00 00 00 xx xx
                01 73 00 00 00 xx xx xx
                  74                        // 03 85  03 bf
                01 75 00 00 00 00 xx xx     输出电压反馈
                01 76 00 00 00 00 xx xx     设定输出电流
                  78
                  7f
                  80
                  81
                  82

======================================================================

0x1001117e      00 01 00 00 00 00 ii ii     输出电流反馈 = ii ii x 0.509

波特率125kbps扩展帧数据帧

[BotoXbz]

Found some more stuff:

090545vcv9ioelq5z797ib.jpg (48.66 KiB) Viewed 14308 times

t0144028b3431065d22.jpg (40.9 KiB) Viewed 14308 times

73_1110015_df8c6a55e9da2a8.jpg (17.48 KiB) Viewed 14308 times

114905u448qgyaoos4kk80.jpg (54.49 KiB) Viewed 14308 times

3脚通信H，4脚通信L
6/7/9脚用线焊短接起来，电源启动。
3 = CANH, 4 = CANL
Short pin 6/7/9 to turn the PSU on.

Seems like you have to short some pins, either internally or externally, to turn the PSU on.

This guy also made a pretty neat mod to his PSU: http://www.crystalradio.cn/thread-1623289-1-1.html

[eee291]

There is a Chinese guy selling the programmer boards for about 12$ on Taobao
https://2.taobao.com/item.htm?id=565948 ... oSite=main

If you are having difficulty ordering it then you can use a third party service like Taobao Focus.
They will order it for you and ship it to you.
https://buy.tbfocus.com/item.php?id=565948826876
It's in English and they accept Paypal.

[BotoXbz]

I am going to test pulling them down to GND and report!

Huawei-R4850G2completePinout.png

The good news is I connected the 2 board detection pins together and pulled them down to the negative 48V (GND) and that was all that was required to get the unit to power up and deliver the proud 53.5V output!
An internal modification was not necessary...

Nice!
Good thing I've already placed my order @dutchrfshop for one of these PSUs

And I've also ordered some ESP32 dev boards + TJA1050 CAN transciever from AliExpress and will be making open source firmware to control the PSU through CAN.
With the ESP32 that means you could control the PSU through physical buttons, knobs or Bluetooth and WiFi.
Looking forward to ditching all of my other PSUs and charging 12S, 13S and 14S all with the same PSU and some fancy buttons/lights/display

[eee291]

I guess he's sold out for now. It'll probably take a week or two.

I'm already heavily invested in the EATON PSUs, so I'm just doing what I can to help from the outside.

[BotoXbz]

All the CAN info you need is in this post: viewtopic.php?f=14&t=86038#p1427144
Use google translate on the OCRd chinese text (I don't speak chinese myself either, used google translate too).
That's the CAN IDs and messages you have to send to adjust the [default] voltage/current.
All you need is a microcontroller/dongle that can do CAN and maybe a CAN transceiver chip.

I doubt the chinese guy will give away his source code, I've read some forum posts of his and he didn't want to share any information for free.
As said before I'll be using an ESP32 + TJA1051 to control mine and will make the code open source, could take a few weeks however.
I do have a TI Tiva-C here too and a CAN transceiver chip in a broken device, so I might experiment with that too when I get my PSU.

I only need 10A for charging my 14S10P pack, even less for the others, so 2000W is overkill for me anyways
But it's cheaper, smaller and lighter than a 500W Mean Well HLG and programmable for a higher voltage range, should be really silent too on small loads.

[eee291]

Looks like he's got some back in stock. You could try purchasing some now.

BTW I can't read Chinese

[BoomerChomsi]

https://dutchrfshop.nl/nl/home/961-huaw ... ruikt.html

In case you need some more, 3 in stock currently.
About 60€ shipped.

This is a different model output is only 35A??

[eee291]

It's the 2000W model up to 42A, and they all use the same communication protocol.
If you want the 3000W one you can get it on Aliexpress for about double the price.
https://www.aliexpress.com/wholesale?ca ... ei+R4850G2


Sorry, that I forgot to mention all that.
I didn't mean to mislead people.

I hope you guys know that a 16A socket can only supply 10A Cont. So you can run the 2000W version at full load without worrying.
Unless you use the red or blue CEE plug.

[BoomerChomsi]

Thanks! Okay I will look for 3KW version

[BoomerChomsi]

Hell guys any update yet about adjusting voltages at these psu's?

Thanks all!

[BotoXbz]

Hell guys any update yet about adjusting voltages at these psu's?

Thanks all!

I'm still waiting for my PSU
Ordered on 27th Nov, according to DPD it's still in NL...
But I found a TJA1050 can transceiver in my junk and hooked it up to a Tiva-C, so whenever I get the PSU I'll post the results here.

[BoomerChomsi]

Thanks for your update mate!

Which one did you ordered and where?