SYSTEM, METHOD AND APPARATUS FOR PORTABLE POWER SUPPLY

• US 20140132069A1
• Filed: 06/26/2012
• Published: 05/15/2014
• Est. Priority Date: 06/28/2011
• Status: Active Grant

• Current Assignee: Yaakov Shmuel Haim Ben Aharon
• Original Assignee: Yaakov Shmuel Haim Ben Aharon
• Inventors: Ben Aharon, Yaakov Shmuel Haim
• Granted Patent: US 9,548,628 B2
• Time in Patent Office: Days
• US Class Current: 307/26
• CPC Class Codes: H02J 1/108 using diodes blocking reverse current flow H02J1/12 takes precedence
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• 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
• CPC Class Codes: H02J 9/00 Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting

Abstract

The invention is a portable power supply having a built in battery, switch matrix, external voltage and impedance sensing means, inverter, and charging circuitry. The device uses a power plug for receiving AC from a wall electric receptacle; a transformer for transforming high voltage input to a low voltage output; a rectifier, for rectifying the low alternating voltage to direct voltage; at least one battery rechargeable by said direct voltage; an inverter, for inverting direct voltage supplied by the rechargeable battery to relatively low alternating voltage, which is supplied to the secondary winding of the transformer; and an alternating current (AC) socket, for receiving high voltage from the primary winding of the transformer. Both AC and DC of various voltages may be supplied by this device in a portable manner, which uses a single transformer both for recharging batteries and for supplying AC power produced via the batteries. A switching assembly allows for connecting the batteries (which may be rechargeable) in a variety of topologies.

Claims

1. A portable power supply (10) comprising:

a. a power plug (24), for receiving alternating current (AC) power from a wall electric receptacle;

b. a transformer (54), whose primary winding (62) is switchably connected to said AC power, adapted to transform said relatively high alternating voltage to a relatively low alternating voltage at the secondary winding (60) of said transformer;

c. a rectifier (56), for rectifying said relatively low alternating voltage to direct voltage;

d. a plurality of batteries rechargeable by said direct voltage;

e. a switching assembly (44), for connecting said rechargeable batteries (34) in a plurality of topographies; and

f. an alternating current (AC) to direct current (DC) converter (46) connected to said switching assembly (44), for charging said plurality of batteries (34),

g. an inverter (58), for inverting direct voltage supplied by said at least one rechargeable battery (34) to relatively low alternating voltage, and for supplying said relatively low alternating voltage to said secondary winding (60) of said transformer (54); and

wherein a single transformer (54) is utilized both for recharging said batteries (34) and for supplying AC power and further wherein said switching assembly is adapted for supplying a desired voltage and from said batteries (34) to said inverter, and for charging said batteries (34) from said converter (46) at said converter voltage.

2. A power supply (10) according to claim 1, further comprising a voltage meter (40) adapted for measuring voltage of a battery of an external device (50) connected to said power supply (10), and further wherein said switching assembly (44) is adapted to change the switch topology so as to output a voltage that is a desired function of the measured voltage of external device (50).

3. The power supply of claim 2 wherein said desired function is

4. A power supply (10) according to claim 1, further comprising a USB port (18), for outputting voltage supplied by said batteries (34).

5. A power supply (10) according to claim 1, further comprising crocodile clips (30), for outputting voltage supplied by said batteries (34), thereby providing means for starting a car.

6. A method for supplying power, said method comprising the steps of:

a. transforming relatively high alternating voltage from a wall electric receptacle, by means of a transformer (54), to a relatively low alternating voltage;

b. rectifying said relatively low alternating voltage to direct voltage;

c. recharging a plurality of batteries by said direct voltage;

d. inverting direct voltage supplied by said batteries to relatively low alternating voltage;

e. transforming said relatively low alternating voltage, by means of said transformer (54), to a relatively high alternating voltage;

f. supplying said relatively high alternating voltage in a portable manner;

g. measuring the extant voltage of said external device (50); and

h. configuring said switching assembly (44) to provide a voltage that is a function of the measured extant voltage of said external device (50),

wherein a single transformer (54) is utilized both for recharging said at least batteries and for supplying AC, and further supplying power to said external device (50) at a voltage consonant with its requirements.

7. A method according to claim 6, further comprising the steps of:

a. disconnecting said external device (50) from said batteries (34);

b. measuring voltage of said battery of said external device (50); and

,

c. providing appropriate switching between said batteries (34) so as to provide a voltage to said external device (50) that is a function of said extant voltage of said battery of said external device (50),

thereby providing appropriate voltage to said external device (50) according to the current state of charge of said battery of said external device (50).

8. The method of claim 6 wherein said function of said extant voltage is

9. A method according to claim 6 further comprising a USB port (18), for outputting voltage supplied by said at least one battery (34).

10. A method according to claim 6, further comprising crocodile clips (30), for outputting voltage supplied by said at least one battery (34), thereby providing means for starting a car.

11. The method of claim 7 wherein said function of said extant voltage is