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Textile-based flexible coils for wireless inductive power transmission

Textile-based flexible coils for wireless inductive power transmission
Textile-based flexible coils for wireless inductive power transmission
Wireless inductive power transmission systems can potentially supply wearable devices. Power cables or batteries can be eliminated by implementing a wireless power transfer system, making the wearable devices less obtrusive to users. However, rigid coils can cause discomfort to users in wearable applications. The novel screen-printed flexible coils on textiles reported here are intended to be a low-cost and comfortable solution when integrated into clothing. A constant-width circular-spiral flat coil has been designed to minimize the detrimental effect of the low conductivity of the screen-printed flexible conductors on the efficiency of the wireless power transfer system. The coils are printed on 65/35 polyester/cotton textile with a screen-printed Fabink-UV-IF1 interface layer coating. The interface layer provides a relatively flat and smooth surface to prevent the permeation of the conductive paste into the textile and allows the printing of finer-profile coils. A 5 V 1.2 W DC output has been achieved by a wireless power transfer system using the printed flexible coils with Qi standard circuitry; a DC-DC efficiency of 37% has been measured.
2076-3417
1-19
Li, Yi
bb52306c-5a20-4bac-b1e3-c2c6a8c6daa2
Grabham, Neil
00695728-6280-4d06-a943-29142f2547c9
Torah, Russel
7147b47b-db01-4124-95dc-90d6a9842688
Tudor, M John
46eea408-2246-4aa0-8b44-86169ed601ff
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d
Li, Yi
bb52306c-5a20-4bac-b1e3-c2c6a8c6daa2
Grabham, Neil
00695728-6280-4d06-a943-29142f2547c9
Torah, Russel
7147b47b-db01-4124-95dc-90d6a9842688
Tudor, M John
46eea408-2246-4aa0-8b44-86169ed601ff
Beeby, Steve
ba565001-2812-4300-89f1-fe5a437ecb0d

Li, Yi, Grabham, Neil, Torah, Russel, Tudor, M John and Beeby, Steve (2018) Textile-based flexible coils for wireless inductive power transmission. Applied Sciences, 8 (6), 1-19. (doi:10.3390/app8060912).

Record type: Article

Abstract

Wireless inductive power transmission systems can potentially supply wearable devices. Power cables or batteries can be eliminated by implementing a wireless power transfer system, making the wearable devices less obtrusive to users. However, rigid coils can cause discomfort to users in wearable applications. The novel screen-printed flexible coils on textiles reported here are intended to be a low-cost and comfortable solution when integrated into clothing. A constant-width circular-spiral flat coil has been designed to minimize the detrimental effect of the low conductivity of the screen-printed flexible conductors on the efficiency of the wireless power transfer system. The coils are printed on 65/35 polyester/cotton textile with a screen-printed Fabink-UV-IF1 interface layer coating. The interface layer provides a relatively flat and smooth surface to prevent the permeation of the conductive paste into the textile and allows the printing of finer-profile coils. A 5 V 1.2 W DC output has been achieved by a wireless power transfer system using the printed flexible coils with Qi standard circuitry; a DC-DC efficiency of 37% has been measured.

Text applsci-08-00912 - Version of Record
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More information

Accepted/In Press date: 25 May 2018
e-pub ahead of print date: 1 June 2018
Published date: 2018

Identifiers

Local EPrints ID: 421445
URI: https://eprints.soton.ac.uk/id/eprint/421445
ISSN: 2076-3417
PURE UUID: a0ba3997-462e-4511-994d-74a507c8816b
ORCID for Neil Grabham: ORCID iD orcid.org/0000-0002-6385-0331
ORCID for Russel Torah: ORCID iD orcid.org/0000-0002-5598-2860
ORCID for Steve Beeby: ORCID iD orcid.org/0000-0002-0800-1759

Catalogue record

Date deposited: 12 Jun 2018 16:30
Last modified: 13 Jun 2018 00:36

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