Systems and methods for thermoelectrically cooling inductive charging stations

• US 10,455,728 B2
• Filed: 12/21/2017
• Issued: 10/22/2019
• Est. Priority Date: 07/06/2012
• Status: Active Grant

• Current Assignee: Gentherm Incorporated
• Original Assignee: Gentherm Incorporated
• Inventors: Lofy, John, Marquette, David
• Primary Examiner(s): Duke, Emmanuel E
• Application Number:
  US15/851,591
• Publication Number:
  US 20180199464A1
• Time in Patent Office: 670 Days
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H05K 7/20136 Forced ventilation, e.g. by fans H05K7/202 takes precedence
• CPC Class Codes: H05K 7/20145 Means for directing air flow, e.g. ducts, deflectors, plenum or guides
• CPC Class Codes: H05K 7/20209 Thermal management, e.g. fan control
• CPC Class Codes: H05K 7/20845 for automotive electronic casings H05K7/2089 takes precedence

Abstract

In some embodiments, a cooling system for an induction charger includes a thermal conditioning module in fluid communication with an induction charging assembly, which includes a dock and an induction charging module. The dock can be configured to receive a portable electronic device, such as a cell phone, that is configured to accept inductive charging from the induction charging module. The thermal conditioning module can include a fan or other fluid encouraging assembly, ducting, and a thermoelectric device (e.g., a Peltier device). A fluid, such as air, can flow from the fan and across and/or through the thermoelectric device, thereby conditioning the fluid. The conditioned fluid can be provided to the dock to at least partially offset the heat generated by the inductive charging and/or the portable electronic device.

Claims

1. A cooling system for an induction charging module, the cooling system comprising:

a dock configured to connect to an induction charging module on a first side, the dock comprising;

walls defining a cavity;

a first opening at a first end of the dock;

a second opening at a second end opposite the first end, the cavity configured to receive a portable electronic device; and

a protrusion extending from one of the walls on the first side for spacing the portable electronic device away from the one of the walls and promoting fluid flow along the portable electronic device; and

a thermal conditioning module comprising an air moving device and a duct fluidly connecting the air moving device and the dock via at least one of the first or second opening, the duct separating the air moving device from the dock,

wherein the thermal conditioning module is configured to supply a flow of air into the dock between the first opening and the second opening for cooling the portable electronic device.

2. The cooling system of claim 1, wherein the thermal conditioning module is configured to move air via the air moving device and the duct from the second end of the dock to the first end of the duct along at least a portion of the portable electronic device.

3. The cooling system of claim 2, wherein the thermal conditioning module moves air via the air moving device and the duct from the second end of the dock to the first end of the duct along the portable electronic device by the air moving at least partially about the protrusion in the spacing between the one of the walls and the portable electronic device.

4. The cooling system of claim 1, wherein the one of the walls is configured to connect to the induction charging module.

5. The cooling system of claim 1, wherein the cooling system is configured to at least partially offset the heat generated by the induction charging module during induction charging of the portable electronic device.

6. The cooling system of claim 1, wherein the thermal conditioning module further comprises a thermoelectric device configured to cool the flow of air in the duct supplied to the dock.

7. The cooling system of claim 1, wherein the cavity is configured to receive all of a longitudinal length of the portable electronic device.

8. The cooling system of claim 1, wherein at least a part of the flow of air emerges into ambient environment from the cavity.

9. The cooling system of claim 1, further comprising a support member or a rib configured to position the portable electronic device relative to the first or second end.

10. A cooling system for an induction charging module, the cooling system comprising:

a pad configured to connect to an induction charging module on a first side, the pad comprising;

a wall at least partially defining a cavity, the cavity configured to receive all of a longitudinal length of a portable electronic device;

a first end of the cavity;

a second end opposite the first end; and

a protrusion extending from the wall on the first side for spacing the portable electronic device away from the wall and promoting fluid flow along the portable electronic device; and

a thermal conditioning module comprising an air moving device and a duct fluidly connecting the air moving device and the pad,

wherein the thermal conditioning module is configured to supply a flow of air into the pad between the first end and the second end for cooling the portable electronic device.

11. The cooling system of claim 10, further comprising a vane adjacent the duct, the vane configured to direct at least a portion of the flow of air from the duct toward a bottom of the pad.

12. The cooling system of claim 11, wherein at least a portion of the flow of air is directed toward a bottom of the pad and circulated through the pad via the bottom of the pad.

13. The cooling system, of claim 12, wherein the duct fluidly connects to the pad between the first end and the second end to direct the flow of air toward the bottom of the pad.

14. The cooling system of claim 12, wherein the duct fluidly connects to the pad a distance above the bottom to direct the flow of air toward the bottom of the pad.

15. The cooling system of claim 10, wherein the duct comprises a fluid passage fluidly connected to the air moving device, wherein the fluid passage fluidly connects to the pad on top of a location where the pad is configured to connect to the induction charging module.

16. The cooling system of claim 10, further comprising a support member or a rib configured to position the portable electronic device relative to the first or second end.

17. A method of cooling for an inductive charging module, the method comprising:

directing an airflow through a thermal conditioning module comprising a duct;

directing the airflow through the duct toward a first end of a pad;

directing the airflow along a protrusion in the pad, the protrusion extending from a wall of the pad, the wall at least partially defining the pad, and the wall connected to an inductive charging module configured to charge a portable electronic device; and

directing of the airflow toward a second end of the pad, the second end opposite the first end,

wherein the protrusion is configured to space the portable electronic device from the wall of the pad for the airflow to flow at least along a portion of the portable electronic device to cool the portable electronic device.

18. The method of claim 17, further comprising cooling the airflow via a thermoelectric device before directing the airflow to the pad.

19. The method of claim 17, further comprising directing at least a portion of the airflow between the first end and the second end of the pad.

20. The method of claim 17, further comprising directing at least a portion of the airflow from a first opening at the first end of the pad to a second opening at the second end of the pad.

21. The method of claim 17, further comprising directing at least a portion of the airflow toward a bottom of the pad and circulating through the pad via the bottom of the pad.