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Wireless Power Kit

maneeshsv2 — Mon, 24 Mar 2014 06:09:59 GMT

Waiting for kits arrival, to be incorporated in the application with dimensions.

Thanks- Maneesh

23.3.2014

RE: Wireless Power Kit

maneeshsv2 — Sun, 13 Jul 2014 15:14:05 GMT

While building for Tiva C board sample downloaded from the link, unable to follow instruction as after build get 4 errors and 1 warning.

Tiva C series software --integrate the project in Tiva C library, you just need to put the project file into the Tiva C installation file to build and test.

Please suggest resolution for this.

Path: TivaWare_C_Series-1.1\examples\boards\ek-tm4c123gxl\ FuelTank_BoosterPack for CSS project import

This is for charging & monitoring battery pack/s with TI-Wurth wireless power transfer kit for supplying power to a LED Lighting system.

Thank you.

RE: Wireless Power Kit

maneeshsv2 — Sat, 21 Jun 2014 07:42:07 GMT

some components got to other address, got hold of most of the components for the project..

thanks

RE: additional components for project

Former Member — Thu, 22 May 2014 17:13:15 GMT

Hi, Your so very welcome- My pleasure.

additional components for project

maneeshsv2 — Tue, 15 Apr 2014 20:46:41 GMT

Have utilized voucher today for additional components needed for the project, Hopefully will get those soon.

Thanks Dr.Christian & Ms.Laureen for all the support, sorry for not being able to reply immediately.

RE: additional components for project

maneeshsv2 — Sat, 10 May 2014 20:47:32 GMT

Testing of Components like Li-Ion battery pack with TI battery management IC and LaunchPad board for the project integration with Qi Wireless Power Kit got delayed due to items shipped at old address.

Testing the Qi Wireless Power transfer kit resonance circuit, Nice informative article on coil and capacitance for the tuning circuit by fellow bloggers.

RE: Wireless Power Kit

maneeshsv2 — Fri, 04 Apr 2014 16:10:59 GMT

Today got the Wireless Power Demo Kit 5W.

Tested it & It's working fine.Checking suitability of TI's booster pack based on single chip Li-ion charge & system power-path management for this application/project.

What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

hemmerling — Fri, 28 Feb 2014 14:44:32 GMT

Hello,,

What is the range of the WÜRTH " Wireless Power Transfer Solution To Go" solution

http://www.we-online.de/web/en/electronic_components/produkte_pb/demoboards/wireless_power/wireless_power_1.php

It is shipped with

5V, Qi Compliant Wireless Power Transmitter Manager Evaluation Module

http://www.ti.com/tool/bq500212aevm-550

and

BQ51013BEVM-764 WPC 1.1 Compatible Fully Integrated Wireless Power Receiver IC Evaluation Module

http://www.ti.com/tool/bq51013bevm-764

Must be transmitter and receiver be together as known from "charging stations",

or might the power transmission work for about 100 cm, like known from Enotion powerswitches ?

My design challenge application needs this distance of 100 cm...

What is the operating RF frequency of the devices ?

I did not find any clues in the TI documents...

I don´t mean the clock speed of of an optional or included microcontroller..

If I see right, there is no microcontroller included in the set?!

If so, do you think that it would be a good idea to add a MSP430 board for controlling the application :-)?! ( I am used to program it ).

Sincerely

Rolf

RE: What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

hlipka — Mon, 31 Mar 2014 17:53:53 GMT

Actually, these number are already there. I just was not clear about them. When looking at the current draw, the lowest value is the one with no displacement. The larger the displacement, the higher the current consumption. So the first number for the current, and therefore the first number of the efficiency, is the one with no displacement.

I will update the articles accordingly, to make that clearer.

Regarding the ebay receiver: with lower loads (and small distances) its efficiency is better. With higher loads it goes to about par. With larger vertical distances it also gets better, also with higher displacement. OTOH its adaptive power management seems not as good, and it needs lower distances to pick up a connection.

RE: What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

mcb1 — Mon, 31 Mar 2014 16:42:48 GMT

You have a great table.

I wonder if you could add the efficiency when the various coils are NOT displaced.

Its very interesting that the 'ebay' electronic receiver performance is not as good, and something a table isn't go to show.

Well done

Mark

RE: What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

hlipka — Mon, 31 Mar 2014 15:21:42 GMT

btw: there are updated version of my measurements in english and german available.

Additional Coils

ipv1 — Thu, 27 Mar 2014 07:48:22 GMT

I may be missing the point here, but I need input. Lots of it!

I got an email from element14 regarding the supply of addional coils. Without the management IC or module? What am I supposed to do with them?

Additionally I want to ask how and if a single coil can be used like in the case of a phone charger?

Thanks in advance.

RE: Additional Coils

mcb1 — Fri, 28 Mar 2014 12:51:41 GMT

Luckily I come from the bottom of the world, and understand 'merci'

Gern geschehen

This link suggests there are some that don't, although I'm not sure its entirely accurate.

RE: Additional Coils

sleuz — Fri, 28 Mar 2014 12:35:42 GMT

Thanks for your help on this Mark.

Document has been updated and the links should work now.

Merci

Simon

RE: Additional Coils

mcb1 — Fri, 28 Mar 2014 12:28:58 GMT

Inderpreet

The receiver details and coil number is here

http://www.element14.com/community/docs/DOC-65661/l/bq51013bevm-764-wpc-11-compatible-fully-integrated-wireless-power-receiver-ic-evaluation-module

the link to the page doesn't work, but the code number is correct.

This page even gives an Eagle download

http://katalog.we-online.de/en/pbs/WE-WPCC_Receiver/760308103202?m=n&sp=http%3A%2F%2Fwww.we-online.de%2Fweb%2Fen%2Felectronic_components%2Fsearchpage_PBS.php%3Fsearch%3D%2B760308103202#vs_t1:3

Try this link to the datasheet

http://katalog.we-online.de/pbs/datasheet/760308103202.pdf

Mark

sleuz

You may wish to update the link

edit

Sorry the above wasn't for Eagle but for various other CAD drawings.

Well done Simon quick response.

RE: Additional Coils

ipv1 — Fri, 28 Mar 2014 11:18:03 GMT

Well I would like to seem the effect of changing the coils by myself. My primary activity here is the design, but I am getting more and more curious about how the coils performance varies... My suggestions for the additional coils? I'm already having a tough time finding the datasheet of the one provided on the receiver...

RE: What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

sleuz — Fri, 28 Mar 2014 07:29:11 GMT

This might be of some help for you:

Wer misst, misst Mist - or measuring the performance of the wireless demo kit

ENG

self.clue++ : Measuring the performance of the wireless power demo kit

Simon

RE: Additional Coils

ipv1 — Thu, 27 Mar 2014 17:37:12 GMT

Can you provided more detail?

RE: Additional Coils

vsluiter — Thu, 27 Mar 2014 12:31:13 GMT

If you design your own receiver hardware or want to put the coil further away from the electronics without demolishing the demo circuit, you'll need additional coils.

You can order these at Farnell, or contact your local Wuerth distributor whether they're willing to support you if you build your own circuit.

I participtated in the previous Wireless Charging Roadtest Challenge, and equiped several devices with a receiver circuit (LEGO train, robot, LEGO battery pack, LED circuit), where each of course needed its own charging coil...

Victor

RE: Additional Coils

hlipka — Thu, 27 Mar 2014 08:14:53 GMT

For me the interesting use case is to get a round coil (my kit came with a rectangular one). Since I cannot guarantee exact placement of the receiver, I want to get as much wiggle room in regards of offset between transmitter and receiver coil. And it should be the same in all directions, regardless of orientation.

And no, the coil alone cannot be used, you need a receiver IC. Even in the case of a phone charger such electronics is included, I suppose.

RE: Additional Coils

mcb1 — Thu, 27 Mar 2014 08:04:45 GMT

I think the idea is to use them instead of the existing coils.

Some of the entrants are using hardware designs that preclude the demo kit coils.

There will be some change of the characteristics, and Simon did a posting linking to the datasheet for each of the other coils some time ago in Wireless Power.

You may have read Hendriks very excellent post and his table of distance and displacement.

Wer misst, misst Mist - or measuring the performance of the wireless demo kit

or the english version

http://blog.hendriklipka.de/archives/2014/03/wireless_power_measuring_qi.html

You have also been granted a voucher for additional purchases, so you could purchase IC's and parts if you wanted to make the full system.

Sharing the pcb design (since we all have Eagle) would save some of the others, and provide a good start for many others.

I haven't quite figured out how we order the coil/coils and Christian is on holiday so I am not asking him.

Cheers

Mark

RE: What is the range of the Würth Elektronik GmbH & Co. KG " Wireless Power Transfer Solution To Go" solution ?

Former Member — Mon, 03 Mar 2014 10:27:59 GMT

Hi Rolf,

to your questions:

a) yes, the coils of the Receiver and Transmitter have to be coupled at a z distance of maximal 10mm as defined in the Qi Standard of the Wireless Power Consortium (WPC). Energy up to 5W will be transferred.

Enotion power Switches operate differently as they only transfer a signal on energy harvesting Basis and not energy.

To cover a distance of 100cm you have to use a different transfer technology like magnetic resonance, RF or IR.

b) Operational energy transfer frequency is at 120kHz, as the Qi Standard defines 100-205kHz as frequency range.

This is published in the Qi Standard of WPC.

c) there is no need for an extra µC as the power Management Controllers of the TI boards can be set according to the parameters of the Qi Standard by the programming Interface of the Evaluation boards or jumpers on the boards. Description on the TI Website you mention in your question a).

Best regards

Joerg