PORTABLE DC POWER TOOL BATTERY ADAPTER AND CHARGER WITH USB INTERFACE

• US 20140117922A1
• Filed: 10/28/2013
• Published: 05/01/2014
• Est. Priority Date: 10/31/2012
• Status: Abandoned Application

• Current Assignee: Lam Pham
• Original Assignee: Lam Pham
• Inventors: Pham, Lam
• Application Number:
  US14/064,677
• Publication Number:
  US 20140117922A1
• Time in Patent Office: Days
• US Class Current: 320/103
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034

Abstract

A portable power tool adapter device used to power and charge an electronic device. The power tool adapter device may include an adapter housing with mechanical fittings configured to mate with various power tool battery types, a charger board circuit for controlling various functions of the adapter device, a DC-to-DC step down converter and regulator for converting the high voltage from the power tool to a low voltage, specialized battery input connectors for electrically connecting the battery to the charger board circuit, heat vents for dissipating heat generated by the charger board circuit, a regulator feedback circuit for maintaining output voltages at desired levels, and a multi-pin input/output connector for charging the power tool battery and supplying multiple output voltages when connected to an external connector module.

Claims

1. A portable power tool adapter and charger device comprising:

an adapter enclosure;

a mechanical fitting disposed on an outer surface of the adapter enclosure, wherein the mechanical fitting facilitates engaging and disengaging the adapter and charger device to an external battery;

a charger circuitry contained within and attached to the adapter enclosure, wherein the charger circuitry comprises a step down DC-to-DC converter and a regulator feedback circuit, wherein the step down DC to DC converter converts an input voltage supplied by the external battery to a predetermined voltage; and

a plurality of USB output ports disposed on the charger circuitry, wherein an output voltage defined by the predetermined voltage is supplied at each USB output port.

2. The power tool adapter and charger device as in claim 1 wherein the external battery has a voltage between 14 and 48 volts.

3. The power tool adapter and charger device as in claim 1, wherein the predetermined voltage has a voltage output of about 3V to 28V.

4. The power tool adapter and the charger device as in claim 1, wherein the regulator feedback circuit is coupled to the step down DC-to-DC converter and regulator circuit, wherein the regulator feedback circuit controls and maintains the voltage output at a constant voltage level.

5. The power tool adapter and charger device as in claim 1, wherein the charger circuitry further comprises a protection circuit, wherein the protection circuit limits the amount of output current flow from the battery to less than 15 Amps.

6. The power tool adapter and charger device as in claim 1, wherein the charger circuitry further comprises a battery monitor circuit.

7. The power tool adapter and charger device as in claim 1, wherein the charger circuitry further comprises a plurality of battery input connectors.

8. The power tool adapter and charger device as in claim 1, wherein the charger circuitry further comprises a multi-pin input/output port.

9. The power tool adapter and charger device as in claim 1, wherein the charger circuitry further comprises an ESD protection circuit coupled to the USB output ports.

10. The power tool adapter and charger device as in claim 1, further comprises a plurality of heat vents defined by a plurality of slots formed in the adapter enclosure.

11. The power tool adapter and charger device as in claim 1, further comprises an LED window defined by an opening formed in the adapter enclosure.

12. The power tool adapter and charger device as in claim 1, further comprises a docking station disposed on the external battery.

14. The integrated power tool battery and charger device as in claim 12 wherein the internal battery has a voltage between 14 and 48 volts.

15. The integrated power tool battery and charger device as in claim 12, wherein the predetermined voltage has a voltage output of 3V to 28V.

16. The integrated power tool battery and charger device as in claim 12, wherein the charger circuitry further comprises a regulator feedback circuit coupled to the step down DC-to-DC converter and regulator circuit, wherein the regulator feedback circuit controls and maintains the voltage output at a constant voltage level.

17. The integrated power tool battery and charger device as in claim 12, wherein the charger circuitry further comprises a plurality of battery input connectors.

18. The integrated power tool battery and charger device as in claim 12, wherein the charger circuitry further comprises a multi-pin input/output port.

19. The integrated power tool battery and charger device as in claim 12, wherein the charger circuitry further comprises an ESD protection circuit coupled to the USB output ports.

13. An integrated power tool battery and charger device comprising:

a battery enclosure;

a mechanical fitting disposed on an outer surface of the battery enclosure, wherein the mechanical fitting facilitates engaging and disengaging to a power tool device;

an internal battery disposed within the battery enclosure;

a charger circuitry contained within and attached to the battery enclosure, wherein the charger circuitry comprises a step down DC-to-DC converter and a regulator circuit to convert an input voltage supplied by the internal battery to a predetermined voltage; and

a plurality of USB output ports disposed on the charger circuitry, wherein an output voltage defined by the predetermined voltage is supplied at each USB output port.