WIRELESS CHARGING CIRCUIT FOR POWER BANK AND POWER BANK THEREOF
First Claim
1. A wireless charging circuit, adapted for a power bank, wherein the power bank comprises a battery, wherein the wireless charging circuit comprises:
- a boost DC to DC converter, comprising an input terminal and an output terminal, wherein the input terminal of the boost DC to DC converter is coupled to the battery to receive a battery voltage, wherein the output terminal of the boost DC to DC converter is for outputting a converted DC voltage;
a unidirectional conductive element, comprising a first terminal and a second terminal, wherein the first terminal of the unidirectional conductive element is coupled to the battery to receive the battery voltage, wherein a current direction is from the first terminal of the unidirectional conductive element to the second terminal of the unidirectional conductive element; and
a wireless power converter, coupled to the second terminal of the unidirectional conductive element and the output terminal of the boost DC to DC converter,wherein the wireless power converter disables the boost DC to DC converter when the wireless charging circuit determines whether an external object is disposed on the wireless power converter or not,wherein the wireless power converter enables the boost DC to DC converter when the wireless charging circuit determines that an external object is disposed on the wireless power converter.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless charging circuit for power bank and a power bank thereof are provided in the present invention. The wireless charging circuit includes a boost DC to DC converter, a unidirectional conductive element and a wireless power converter. The input terminal of the boost DC to DC converter is coupled to the battery to receive the battery voltage. The output terminal of the boost DC to DC converter outputs a converted DC voltage. The first terminal of the unidirectional conductive element is coupled to the battery to receive the battery voltage, wherein the direction of the current flow is from the first terminal of the unidirectional conductive element to the second terminal of the unidirectional conductive element. The input terminal of the wireless power converter is coupled to the second terminal of the unidirectional conductive element. When the wireless charging circuit performs the detection for the wireless power receiver, the wireless power converter disables the boost DC to DC converter.
-
Citations
34 Claims
-
1. A wireless charging circuit, adapted for a power bank, wherein the power bank comprises a battery, wherein the wireless charging circuit comprises:
-
a boost DC to DC converter, comprising an input terminal and an output terminal, wherein the input terminal of the boost DC to DC converter is coupled to the battery to receive a battery voltage, wherein the output terminal of the boost DC to DC converter is for outputting a converted DC voltage; a unidirectional conductive element, comprising a first terminal and a second terminal, wherein the first terminal of the unidirectional conductive element is coupled to the battery to receive the battery voltage, wherein a current direction is from the first terminal of the unidirectional conductive element to the second terminal of the unidirectional conductive element; and a wireless power converter, coupled to the second terminal of the unidirectional conductive element and the output terminal of the boost DC to DC converter, wherein the wireless power converter disables the boost DC to DC converter when the wireless charging circuit determines whether an external object is disposed on the wireless power converter or not, wherein the wireless power converter enables the boost DC to DC converter when the wireless charging circuit determines that an external object is disposed on the wireless power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A mobile power bank, comprising:
-
a battery; and a wireless charging circuit, comprising; a boost DC to DC converter, comprising an input terminal and an output terminal, wherein the input terminal of the boost DC to DC converter is coupled to the battery to receive a battery voltage, wherein the output terminal of the boost DC to DC converter is for outputting a converted DC voltage; a unidirectional conductive element, comprising a first terminal and a second terminal, wherein the first terminal of the unidirectional conductive element is coupled to the battery to receive the battery voltage, wherein a current direction is from the first terminal of the unidirectional conductive element to the second terminal of the unidirectional conductive element; and a wireless power converter, coupled to the second terminal of the unidirectional conductive element and the output terminal of the boost DC to DC converter, wherein the wireless power converter disables the boost DC to DC converter when the wireless charging circuit determines whether an external object is disposed on the wireless power converter or not, wherein the wireless power converter enables the boost DC to DC converter when the wireless charging circuit determines that an external object is disposed on the wireless power converter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A wireless charging circuit, adapted for a power bank, wherein the power bank comprises a battery, wherein the wireless charging circuit comprises:
-
a boost DC to DC converter, comprising an input terminal and an output terminal, wherein the input terminal of the boost DC to DC converter is coupled to the battery to receive a battery voltage, wherein the output terminal of the boost DC to DC converter is for outputting a converted DC voltage; a control circuit, coupled to the battery to receive the battery voltage; a low voltage pulse width modulation (PWM) circuit, coupled to the control circuit and the battery to receive the battery voltage, for outputting a low voltage PWM signal according to the control of the control circuit; a wireless power converter, comprising; a high voltage PWM circuit, coupled to the control circuit and the output terminal of the boost DC to DC converter, for outputting a high voltage PWM signal according to the control of the control circuit; and a resonant circuit, comprising a first input terminal, wherein the first input terminal of the resonant circuit is coupled to the low voltage PWM circuit and a high voltage PWM circuit; wherein the wireless power converter disables the boost DC to DC converter and the high voltage PWM circuit and the wireless power converter controls the low voltage PWM circuit to output the low voltage PWM signal to the resonant circuit when the wireless charging circuit determines whether an external object is disposed on the wireless power converter or not, wherein the wireless power converter enables the boost DC to DC converter and the high voltage PWM circuit and the wireless power converter disables the low voltage PWM circuit when the wireless charging circuit determines that an external object is disposed on the wireless power converter. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
-
-
27. A mobile power bank, comprising:
-
a battery; and a wireless charging circuit, comprising; a boost DC to DC converter, comprising an input terminal and an output terminal, wherein the input terminal of the boost DC to DC converter is coupled to the battery to receive a battery voltage, wherein the output terminal of the boost DC to DC converter is for outputting a converted DC voltage; a control circuit, coupled to the battery to receive the battery voltage; a low voltage pulse width modulation (PWM) circuit, coupled to the control circuit and the battery to receive the battery voltage, for outputting a low voltage PWM signal according to the control of the control circuit; a wireless power converter, comprising; a high voltage PWM circuit, coupled to the control circuit and the output terminal of the boost DC to DC converter, for outputting a high voltage PWM signal according to the control of the control circuit; and a resonant circuit, comprising a first input terminal, wherein the first input terminal of the resonant circuit is coupled to the low voltage PWM circuit and a high voltage PWM circuit; wherein the wireless power converter disables the boost DC to DC converter and the high voltage PWM circuit and the wireless power converter controls the low voltage PWM circuit to output the low voltage PWM signal to the resonant circuit when the wireless charging circuit determines whether an external object is disposed on the wireless power converter or not, wherein the wireless power converter enables the boost DC to DC converter and the high voltage PWM circuit and the wireless power converter disables the low voltage PWM circuit when the wireless charging circuit determines that an external object is disposed on the wireless power converter. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
Specification