Noncontact charging device with temperature detection
First Claim
1. A noncontact charging device, comprising:
- a mounting portion on which a device charged in a noncontact manner is mounted;
a magnetic sheet;
a flexible printed-circuit board;
a primary transmission coil for supplying power to a secondary transmission coil provided to the device by the use of electromagnetic induction, the primary transmission coil disposed between and adhesively connected to the magnetic sheet and the flexible printed-circuit board;
a spot-shaped temperature-detecting element formed as a temperature-detecting spot either embedded in the conductor pattern of the flexible printed-circuit board or disposed on and adhesively connected to and between the flexible printed-circuit board and the primary transmission coil; and
control means for carrying out control of supplying power to the primary transmission coil and terminating the power supply to the primary transmission coil when a predetermined temperature is detected by the spot-shaped temperature-detecting element, whereinthe primary transmission coil has an inner-most coil defining an inner coil diameter and extends radially outwardly therefrom to terminate in an outer-most coil defining an outer coil diameter to form an annular area of a plurality of primary transmission coil segments wrapped around in sequential contact with one another, andthe spot-shaped temperature-detecting element extends, as viewed in cross-section, radially and contacts any one of the plurality of primary transmission coil segments in the annular area for detecting a temperature of the primary transmission coil segment at the location of contact.
1 Assignment
0 Petitions
Accused Products
Abstract
A noncontact charging device includes a mounting portion, a primary transmission coil, a temperature-detecting element, and a control unit. A device charged in a noncontact manner is mounted on the mounting portion. The primary transmission coil supplies power to a secondary transmission coil provided to the device by the use of electromagnetic induction. The temperature-detecting element detects a temperature of a material mounted on the mounting portion. The control unit is configured to supply power to the primary transmission coil and terminate the power supply to the primary transmission coil when a predetermined temperature is detected by the temperature-detecting element. The temperature-detecting element is located on a side of a contact surface between the mounting portion and the primary transmission coil, and the center of the temperature-detecting element is located within a range of the diameter of the primary transmission coil from the center position of the primary transmission coil.
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Citations
6 Claims
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1. A noncontact charging device, comprising:
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a mounting portion on which a device charged in a noncontact manner is mounted; a magnetic sheet; a flexible printed-circuit board; a primary transmission coil for supplying power to a secondary transmission coil provided to the device by the use of electromagnetic induction, the primary transmission coil disposed between and adhesively connected to the magnetic sheet and the flexible printed-circuit board; a spot-shaped temperature-detecting element formed as a temperature-detecting spot either embedded in the conductor pattern of the flexible printed-circuit board or disposed on and adhesively connected to and between the flexible printed-circuit board and the primary transmission coil; and control means for carrying out control of supplying power to the primary transmission coil and terminating the power supply to the primary transmission coil when a predetermined temperature is detected by the spot-shaped temperature-detecting element, wherein the primary transmission coil has an inner-most coil defining an inner coil diameter and extends radially outwardly therefrom to terminate in an outer-most coil defining an outer coil diameter to form an annular area of a plurality of primary transmission coil segments wrapped around in sequential contact with one another, and the spot-shaped temperature-detecting element extends, as viewed in cross-section, radially and contacts any one of the plurality of primary transmission coil segments in the annular area for detecting a temperature of the primary transmission coil segment at the location of contact. - View Dependent Claims (2, 3, 4)
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5. A noncontact charging device, comprising:
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a mounting portion on which a device charged in a noncontact manner is mounted; a magnetic sheet; a flexible printed-circuit board; a primary transmission coil for supplying power to a secondary transmission coil provided to the device by the use of electromagnetic induction, the primary transmission coil disposed between and adhesively connected to the magnetic sheet and the flexible printed-circuit board; a spot-shaped temperature-detecting element formed as a temperature-detecting spot either embedded in the conductor pattern of the flexible printed-circuit board or disposed on and adhesively connected to and between the flexible printed-circuit board and the primary transmission coil; and a control unit configured to supply power to the primary transmission coil and terminate the power supply to the primary transmission coil when a predetermined temperature is detected by the spot-shaped temperature-detecting element, wherein the primary transmission coil has an inner-most coil defining an inner coil diameter and extends radially outwardly therefrom to terminate in an outer-most coil defining an outer coil diameter to form an annular area of a plurality of primary transmission coil segments wrapped around in sequential contact with one another, and the spot-shaped temperature-detecting element extends, as viewed in cross-section, radially and contacts any one of the plurality of primary transmission coil segments in the annular area for detecting a temperature of the primary transmission coil segment at the location of contact. - View Dependent Claims (6)
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Specification