IP Library Granted Patent US 11,902,732
Granted Patent B2
US 11,902,732 · App. 17/386,864 · Granted Feb 13, 2024

Information handling system with an integrated wireless charger

Inventors: Jonathan C. Giffen (Austin, TX); Gregory L. Henderson (Round Rock, TX); Mikaela M. Noe (Wimberley, TX); Stefanie Marie Thompson (Brownsville, TX)
Assignee: Dell Products L.P.
H04R1/1025H02J50/005H02J50/10H02J50/402H04R1/1008H02J2310/22
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Quick Facts
Patent No.
US 11,902,732
App. No.
17/386,864
Granted
Feb 13, 2024
Kind
B2
Abstract

A wireless charger inductively charges devices of various shapes and/or types, such as with multiple bend radii. Smartphones, headphones, key fobs, and other wireless devices may be laid atop the wireless charger. The wireless charger has flexible and pliable features that conform to the shape of the wireless device. The flexible and pliable features maintain a conformal relationship with the wireless device laid atop the wireless charger. The flexible and pliable features increase the efficiency of inductive power transfer and can reduce charge times and/or reduce heat generated due to thermal losses.

Claims (35)

1. A wireless charging pad assembly comprising:

a top portion that forms a conformable non-slip cover that conforms to a shape of a device placed on the wireless charging pad assembly;

a circuit including a charging coil mounted into a semi-rigid substrate, the semi-rigid substrate to keep the charging coil flat if the device placed on the wireless charging pad assembly is flat, and if the device includes a curved portion, the semi-rigid substrate bends to match an arc of the curved portion of the device that is proximate to the conformable non-slip cover; and

a bottom portion to support the circuit disposed between the bottom portion and the top portion, the bottom portion being a rigid base to provide support to the conformable non-slip cover and the circuit, wherein the rigid base has a geometry that allows the conformable non-slip cover and the circuit to bend according to a weight of the device.

2. The wireless charging pad assembly of claim 1 , wherein the device is a wireless headset with a receiver coil in a connecting band between a left ear portion and a right ear portion.

3. The wireless charging pad assembly of claim 2 , wherein the receiver coil in the connecting band is curved based on the arc of the connecting band.

4. The wireless charging pad assembly of claim 1 , wherein the wireless charging pad assembly is integrated into a chassis of an information handling system.

5. The wireless charging pad assembly of claim 1 , wherein the wireless charging pad assembly is retractable from a chassis of an information handling system.

6. The wireless charging pad assembly of claim 1 , wherein the weight of the device applies a compression force that bends the conformable non-slip cover and the charging coil mounted on the semi-rigid substrate around a pivot point.

7. The wireless charging pad assembly of claim 1 , wherein the charging coil can bend to match the arc of a receiver coil of the device placed on the wireless charging pad assembly.

8. The wireless charging pad assembly of claim 1 , wherein if a curved device is placed on the conformable non-slip cover, then the conformable non-slip cover bends over a pivot point.

9. The wireless charging pad assembly of claim 1 , wherein an initial shape of the top portion of the wireless charging pad assembly is flat.

10. An information handling system inductively charging a device, comprising:

a chassis;

a motherboard mounted to the chassis;

an outer enclosure housing the motherboard and the chassis; and

a wireless charging pad assembly integrated with the chassis, wherein the wireless charging pad assembly includes:

a flexible inductive charging coil mounted to a pliable semi-rigid substrate bending to a weight and shape of the device laid atop the wireless charging pad assembly;

a bendable electrical circuit providing electrical power to the flexible inductive charging coil; and

a bottom portion supporting the flexible inductive charging coil and the bendable electrical circuit, the bottom portion having a geometry allowing the flexible inductive charging coil and the bendable electrical circuit bending according to the weight and the shape of the device laid atop the wireless charging pad assembly.

11. The information handling system of claim 10 , further comprising an electrical switch that electrically conveys the electrical power by extending the wireless charging pad assembly outside the chassis of the information handling system.

12. The information handling system of claim 11 , wherein the electrical switch disconnects electrical power when the wireless charging pad assembly is stowed inside the chassis.

13. The information handling system of claim 10 , wherein the flexible inductive charging coil adopts a conformal arrangement with the device laid atop the wireless charging pad assembly.

14. The information handling system of claim 10 , wherein the wireless charging pad assembly has a deployed position and a stowage position, the deployed position outwardly extending from the outer enclosure and conveying the electrical power to the flexible inductive charging coil, and the stowage position retracting within the outer enclosure and disconnecting the electrical power from the flexible inductive charging coil.

15. The information handling system of claim 10 , wherein if a curved device is placed on a conformable non-slip cover, then the conformable non-slip cover bends over a pivot point.

16. The information handling system of claim 10 , further comprising wherein the flexible inductive charging coil can bend to match an arc of a receiver coil of the device placed on the wireless charging pad assembly.

17. An information handling system, comprising:

a chassis;

a motherboard mounted to the chassis;

an outer enclosure housing the motherboard and the chassis;

a hinge having a first leaf and a second leaf, the first leaf attached to the outer enclosure housing the motherboard and the chassis; and

a wireless charging pad assembly attached to the second leaf of the hinge, the wireless charging pad assembly including a flexible inductive charging coil and a bendable electrical circuit, the flexible inductive charging coil mounted to a pliable semi-rigid substrate bending to a weight and shape of a device laid atop the wireless charging pad assembly, and the bendable electrical circuit providing electrical power to the flexible inductive charging coil to inductively charge the device, and wherein the wireless charging pad assembly has a deployed position and a stowage position, the deployed position outwardly extending via the hinge from the outer enclosure and conveying the electrical power to the flexible inductive charging coil, and the stowage position stowing via the hinge within the outer enclosure and disconnecting the electrical power from the flexible inductive charging coil.

18. The wireless charging pad assembly of claim 17 , wherein the wireless charging pad assembly is configured to simultaneously charge multiple devices.

19. The wireless charging pad assembly of claim 17 , wherein the wireless charging pad assembly is configured to simultaneously charge a flat device and a curved device.

20. The wireless charging pad assembly of claim 17 , wherein the flexible inductive charging coil matches a particular geometry of a receiver coil of the device to be charged.

Assignments (8)
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (058014/0560) Recorded Jun 10, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
Reel/Frame 062022/0473 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (057931/0392) Recorded Jun 10, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
Reel/Frame 062022/0382 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (057758/0286) Recorded Jun 10, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
Reel/Frame 061654/0064 →
SECURITY INTEREST Recorded Oct 6, 2021
From: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 058014/0560 →
SECURITY INTEREST Recorded Oct 6, 2021
From: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 057758/0286 →
SECURITY INTEREST Recorded Oct 6, 2021
From: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 057931/0392 →
SECURITY AGREEMENT Recorded Oct 1, 2021
From: DELL PRODUCTS, L.P.; EMC IP HOLDING COMPANY LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Reel/Frame 057682/0830 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2021
From: GIFFEN, JONATHAN C.; HENDERSON, GREGORY L.; NOE, MIKAELA M.; THOMPSON, STEFANIE MARIE
To: DELL PRODUCTS L.P.
Reel/Frame 057002/0017 →
Continuity (1)
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