PORTABLE ELECTRONIC DEVICE COMPRISING SOLAR POWERED FUNCTION

• US 20130214721A1
• Filed: 12/19/2012
• Published: 08/22/2013
• Est. Priority Date: 02/17/2012
• Status: Abandoned Application

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: ZHOU, HAI-QING
• Application Number:
  US13/720,902
• Publication Number:
  US 20130214721A1
• Time in Patent Office: Days
• US Class Current: 320/101
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/35 with light sensitive cells

Abstract

A portable electronic device includes a battery, a normal charge module, a solar powered module, and a switch. The normal charge module charges the battery from a commercial power source. The solar powered module includes a solar panel and a voltage converting circuit, the solar panel converts light into electricity outputs a voltage of the electricity to the voltage converting circuit, the voltage converting circuit converts the voltage output from the solar panel into a charging voltage, and rectifies and filters the charging voltage which is then output to the battery, to charge the battery. The switch selectively connects the battery either to the normal charge module or to the solar powered module.

Claims

1. A portable electronic device, comprising:

a battery;

a normal charge module charging the battery from a commercial power source;

a solar powered module comprising a solar panel and a voltage converting circuit, the solar panel converting light into electricity and outputting a voltage of the electricity to the voltage converting circuit;

the voltage converting circuit converting the voltage output from the solar panel into a charging voltage, and rectifying and filtering the charging voltage that is output to the battery, to charge the battery; and

a switch selectively connecting the battery to one of the normal charge module and the solar powered module, wherein the switch electronically connects the battery to the solar powered module when the solar panel can obtain light, and electronically connects the battery to the normal charge module when the solar panel cannot obtain light.

2. The portable electronic device of claim 1, wherein the voltage converting circuit comprises a charge unit converting the voltage output from the solar panel to the charging voltage, the charge unit comprises a transformer, the transformer comprises a primary winding electronically connected to the solar panel, and a secondary winding coupled to the primary winding and electronically connected to the battery.

3. The portable electronic device of claim 2, wherein the charge unit further comprises a first bipolar junction transistor (BJT), a base resistor, a collector resistor, a feedback resistor, and a feedback capacitor, the transformer further comprises a feedback winding coupled with the primary winding and the secondary winding, a base and a collector of the first BJT are connected to a positive pole of the solar panel via the base resistor and the collector resistor respectively, and an emitter of the first BJT is grounded;

a dotted terminal of the primary winding is electronically connected to the positive pole of the solar panel, and an undotted terminal of the primary winding is electronically connected to a node between the collector resistor and the collector of the first BJT;

the dotted terminal of the feedback winding is electronically connected to a node between the base resistor and the base of the first BJT via the feedback capacitor and the feedback resistor, and an undotted terminal of the feedback winding is grounded;

the dotted terminal of the secondary winding is grounded, and an undotted terminal of the secondary winding is electronically connected to the a positive pole of the battery.

4. The portable electronic device of claim 3, wherein the voltage converting circuit further includes a rectifying diode and a filtering capacitor, an anode cathode of the rectifying diode is electronically connected to the undotted terminal of the secondary winding, a cathode of the diode is electronically connected to the positive pole of the battery, the filtering capacitor is electronically connected in parallel with the battery.

5. The portable electronic device of claim 4, wherein the voltage converting circuit further comprises a voltage limiting unit that limits the charging voltage output from the charge unit to a predetermined maximum voltage.

6. The portable electronic device of claim 5, wherein the voltage limiting unit comprises a second BJT, a zener diode, a first voltage dividing resistor, a second voltage dividing resistor, and a current dividing resistor, the first and second voltage dividing resistors are connected in series, and are then connected in parallel with the first filtering capacitor;

a cathode of the zener diode is electronically connected to a node between the first and second voltage dividing resistors, and an anode of the zener diode is electronically connected to a base of the second BJT, a collector of the second BJT is electronically connected to a node between the feedback resistor and the base of the first BJT, and an emitter of the second BJT is grounded, the current dividing resistor is electronically connected to the base and the emitter of the second BJT.

7. A portable electronic device, comprising:

a battery;

a normal charge module charging the battery from a commercial power source;

a solar powered module comprising a solar panel and a voltage converting circuit, the solar panel converting light into electricity and outputting a voltage of the electricity to the voltage converting circuit;

the voltage converting circuit converting the voltage output from the solar panel into a charging voltage, and rectifying and filtering the charging voltage that is output to the battery, to charge the battery; and

a switch selectively connecting the battery either to the normal charge module or to the solar powered module.

8. The portable electronic device of claim 7, wherein the voltage converting circuit comprises a charge unit converting the voltage output from the solar panel to the charging voltage, the charge unit comprises a transformer, the transformer comprises a primary winding electronically connected to the solar panel, and a secondary winding coupled to the primary winding and electronically connected to the battery.

9. The portable electronic device of claim 8, wherein the charge unit further comprises a first bipolar junction transistor (BJT), a base resistor, a collector resistor, a feedback resistor, and a feedback capacitor, the transformer further comprises a feedback winding coupled with the primary winding and the secondary winding, a base and a collector of the first BJT are connected to a positive pole of the solar panel via the base resistor and the collector resistor respectively, and an emitter of the first BJT is grounded;

a dotted terminal of the primary winding is electronically connected to the positive pole of the solar panel, and an undotted terminal of the primary winding is electronically connected to a node between the collector resistor and the collector of the first BJT;

the dotted terminal of the feedback winding is electronically connected to a node between the base resistor and the base of the first BJT via the feedback capacitor and the feedback resistor, and an undotted terminal of the feedback winding is grounded;

the dotted terminal of the secondary winding is grounded, and an undotted terminal of the secondary winding is electronically connected to the a positive pole of the battery.

10. The portable electronic device of claim 9, wherein the voltage converting circuit further includes a rectifying diode and a filtering capacitor, an anode cathode of the rectifying diode is electronically connected to the undotted terminal of the secondary winding, a cathode of the diode is electronically connected to the positive pole of the battery, the filtering capacitor is electronically connected in parallel with the battery.

11. The portable electronic device of claim 10, wherein the voltage converting circuit further comprises a voltage limiting unit that limits the charging voltage output from the charge unit to a predetermined maximum voltage.

12. The portable electronic device of claim 11, wherein the voltage limiting unit comprises a second BJT, a zener diode, a first voltage dividing resistor, a second voltage dividing resistor, and a current dividing resistor, the first and second voltage dividing resistors are connected in series, and are then connected in parallel with the first filtering capacitor;

a cathode of the zener diode is electronically connected to a node between the first and second voltage dividing resistors, and an anode of the zener diode is electronically connected to a base of the second BJT, a collector of the second BJT is electronically connected to a node between the feedback resistor and the base of the first BJT, and an emitter of the second BJT is grounded, the current dividing resistor is electronically connected to the base and the emitter of the second BJT.

13. The portable electronic device of claim 7, wherein the voltage converting circuit further comprises a second filtering capacitor connected to the solar panel in parallel.

14. A portable electronic device, comprising:

a battery;

a normal charge module charging the battery by commercial power;

a solar powered module comprising a plurality of solar panels connected in series and a voltage converting circuit, the solar panels converting light into electricity, and outputting a voltage of the electricity to the voltage converting circuit, the voltage converting circuit converting the voltage output from the solar panel into a charging voltage, and rectifying and filtering the charging voltage that is output to the battery, to charge the battery; and

a switch selectively connecting the battery either to the normal charge module or to the solar powered module.

15. The portable electronic device of claim 14, wherein the voltage converting circuit comprises a charge unit converting the voltage output from the solar panels to the charging voltage, the charge unit comprises a transformer, the transformer comprises a primary winding electronically connected to a positive pole of the solar panels, and a secondary winding coupled to the primary winding and electronically connected to the battery.

16. The portable electronic device of claim 15, wherein the charge unit further comprises a first bipolar junction transistor (BJT), a base resistor, a collector resistor, a feedback resistor, and a feedback capacitor, the transformer further comprises a feedback winding coupled with the primary winding and the secondary winding, a base and a collector of the first BJT are connected to the positive pole of the solar panels via the base resistor and the collector resistor respectively, and an emitter of the first BJT is grounded;

a dotted terminal of the primary winding is electronically connected to the positive pole of the solar panels, and an undotted terminal of the primary winding is electronically connected to a node between the collector resistor and the collector of the first BJT;

the dotted terminal of the feedback winding is electronically connected to a node between the base resistor and the base of the first BJT via the feedback capacitor and the feedback resistor, and an undotted terminal of the feedback winding is grounded;

the dotted terminal of the secondary winding is grounded, and an undotted terminal of the secondary winding is electronically connected to the a positive pole of the battery.

17. The portable electronic device of claim 16, wherein the voltage converting circuit further includes a rectifying diode and a filtering capacitor, an anode cathode of the rectifying diode is electronically connected to the undotted terminal of the secondary winding, a cathode of the diode is electronically connected to the positive pole of the battery, the filtering capacitor is electronically connected in parallel with the battery.

18. The portable electronic device of claim 17, wherein the voltage converting circuit further comprises a voltage limiting unit that limits the charging voltagecoutput from the charge unit to a predetermined maximum voltage.

19. The portable electronic device of claim 18, wherein the voltage limiting unit comprises a second BJT, a zener diode, a first voltage dividing resistor, a second voltage dividing resistor, and a current dividing resistor, the first and second voltage dividing resistors are connected in series, and are then connected in parallel with the first filtering capacitor;

a cathode of the zener diode is electronically connected to a node between the first and second voltage dividing resistors, and an anode of the zener diode is electronically connected to a base of the second BJT, a collector of the second BJT is electronically connected to a node between the feedback resistor and the base of the first BJT, and an emitter of the second BJT is grounded, the current dividing resistor is electronically connected to the base and the emitter of the second BJT.

20. The portable electronic device of claim 14, wherein the voltage converting circuit further comprises a second filtering capacitor connected to the solar panels in parallel.