Canadian Patents Database / Patent 2777387 Summary

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(12) Patent: (11) CA 2777387
(54) English Title: PORTABLE BATTERY CHARGER
(54) French Title: CHARGEUR DE BATTERIE PORTATIF
(51) International Patent Classification (IPC):
  • H02J 7/00 (2006.01)
  • H02J 7/02 (2016.01)
  • H02J 7/35 (2006.01)
(72) Inventors (Country):
  • ZHU, ZUOHANG (Canada)
(73) Owners (Country):
  • POWERSTICK.COM INC. (Canada)
(71) Applicants (Country):
  • ECOSOL TECHNOLOGIES INC. (Canada)
(74) Agent: VALADARES LAW PROFESSIONAL CORPORATION
(45) Issued: 2014-09-30
(22) Filed Date: 2012-05-16
(41) Open to Public Inspection: 2012-07-27
Examination requested: 2012-05-16
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract

A portable device charger is disclosed, which is able to charge portable devices whether it is connected to an external power supply or not. The charger connects to household AC power as well as USB DC power, and further has a photovoltaic cell. It manages the input power from these three sources to charge a portable device and/or recharge the charger's battery, by supplementing the input power with battery power if the device demands more power than the input source, and charging the battery with remaining power if the device demands less power than is provided by the input source. The charger turns off the AC/DC converter and draws no power from the AC source if the battery is full and there is no attached device.


French Abstract

Un chargeur de dispositif portatif est présenté permettant de charger des dispositifs portatifs qu'ils soient raccordés à une source d'alimentation externe ou non. Le chargeur se raccorde à une alimentation domestique en c.a. ainsi à une source d'alimentation c.c., USB, et comporte une cellule photovoltaïque. Il gère l'alimentation d'entrée de ces trois sources pour charger un dispositif portatif et/ou recharger la batterie du chargeur, en remplaçant l'alimentation d'entrée par l'alimentation de la batterie si le dispositif demande une alimentation supérieure à celle de la source d'entrée, en chargeant la batterie à l'aide de la puissance restante si le dispositif demande moins d'énergie que l'énergie fournie par la source d'alimentation. Le chargeur met hors tension le convertisseur c.a./c.c. et ne tire aucune alimentation de la source c.a. si la batterie est complètement chargée et qu'aucun dispositif n'y est raccordé.


Note: Claims are shown in the official language in which they were submitted.

The invention claimed is:
1. A portable charger for charging a device, the charger comprising:
(a) a housing;
(b) a battery contained within the housing and having a battery voltage;
(c) an output power connector for providing output power to a device;
(d) an input source for providing power at a system voltage, comprising
(i) a DC power input at the system voltage, and
(ii) an AC power input having an AC/DC converter to convert AC to DC power at
the
system voltage;
(e) a power path controller connected to the input source, for controlling
input power; and
(f) a power multiplexer connected between the power path controller and an
output
power connector, for controlling output power,
wherein the power path controller directs the power from the input source to
the
output power connector and the battery simultaneously, which power path
controller
directs at least some of the power from the input source to the output power
connector
when a device is connected to the output power connector; and wherein the
power
multiplexer directs power simultaneously from the power path controller and
the
battery to the output power connector.
2. The portable charger of claim 1, wherein the input source further comprises
a photovoltaic
panel.
3. The portable charger of claim 2, further comprising a power point
controller between the PV
panel and the battery, wherein the power point controller directs power from
the photovoltaic
panel to the battery unless a device is connected to the output power
connector wherein the
power point controller directs the power from the PV panel to the device.
4. The portable charger of claim 2, wherein the PV panel is auxiliary and
connected through the
USB power input.
5. The portable charger of claim 1., further comprising a DC/DC converter
between the battery and
the output power connector for converting the battery voltage to the system
voltage, wherein
when a device is connected to the output power connector and the device
demands further
output power than is provided by the input source the output power is
supplemented by the
battery.

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6. The portable charger of claim 1, further comprising a battery charger
between the input source
and the battery for controlling the current and voltage provided to the
battery wherein if the
input source provides more power than the device demands, remaining power is
directed by the
power path controller to the battery charger to charge the battery.
7. The portable charger of claim 6, wherein if a current draw from the AC/DC
converter is above a
threshold, the AC/DC converter produces an overcurrent signal for the battery
charger to reduce
a current draw of the battery charger.
8. The portable charger of claim 1, further comprising a USB controller for
transmitting data
between the portable charger and an input source.
9. The portable charger of claim 1, further comprising a USB controller for
transmitting data
between the portable charger and the device.
10. The portable charger of claim 1, wherein if the battery cannot receive any
charge and no device
is connected, the AC/DC converter is turned off to save power from an AC
source.
11. A method of charging a device battery, comprising the steps of
(a) connecting a DC input source and an AC input source to a charger for
providing input
power;
(b) connecting a device to the charger;
(c) charging a device battery of the device with input power from the charger;
(d) a multiplexer providing an overcurrent signal when the device battery
demands exceed
the input power; and
(e) multiplexing output power with power from a charger battery when an
overcurrent
signal is provided.
12. A method of charging a device battery using a charger, comprising the
steps of:
(a) receiving input power in a charger battery when the input source is
connected, unless a
device is also connected to an output power connector;
(b) directing output power from the input source to the device when the device
is
connected;
(c) a multiplexer providing an overcurrent signal when the device demands
exceed the
input power;
(d) multiplexing DC output power with power from the charger battery when an
overcurrent signal is provided; and

13

(e) receiving excess power in the charger battery when the device demands less
power
than is provided by the input source.
13. The method of claim 12, wherein the step of receiving comprises the step
of receiving power
from a photovoltaic panel, and wherein the step of directing comprises the
steps of directing the
PV panel power to the device when the device is connected; and directing the
PV panel power
to charge the battery when no device is connected.
14. The method of claim 13, wherein the PV panel is an auxiliary PV panel
connected to the USB
input.
15. The method of claim 12, further comprising the step of:
(f) transmitting data between the charger and the input source.
16. The method of claim 12, further comprising the step of:
(f) transmitting data between the charger and the device.
17. The method of claim 12, further comprising the step of:
(f) directing remaining power to charge the battery when the input source
provides more
power than the device demands.
18. The method of claim 12, comprising the further step of:
(f) producing an overcurrent signal for the battery charger to reduce the
current draw of
the battery charger when the current draw is above a threshold.
19. The method of claim 12, further comprising the step of:
(f) turning off an AC/DC converter when the battery cannot receive a charge
and no device
is connected to an output power connector.
20. A method of charging a device battery, comprising the steps of
(a) connecting one or more DC input sources to a charger for providing input
power;
(b) connecting a device to the charger;
(c) charging a device battery of the device with input power from the charger;
(d) a multiplexer providing an overcurrent signal when the device battery
demands exceed
the input power; and
(e) multiplexing output power with power from a charger battery when an
overcurrent
signal is provided.
21. A method of charging a device battery, comprising the steps of
(a) connecting an AC input source to a charger for providing input power;
(b) connecting a device to the charger;

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(c) charging a device battery of the device with input power from the charger;
(d) a multiplexer providing an overcurrent signal when the device battery
demands exceed
the input power; and
(e) multiplexing output power with power from a charger battery when an
overcurrent
signal is provided.



A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(22) Filed 2012-05-16
Examination Requested 2012-05-16
(41) Open to Public Inspection 2012-07-27
(45) Issued 2014-09-30

Maintenance Fee

Description Date Amount
Last Payment 2017-07-11 $300.00
Next Payment if small entity fee 2018-05-16 $100.00
Next Payment if standard fee 2018-05-16 $200.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
  • the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Request for Examination $400.00 2012-05-16
Filing $200.00 2012-05-16
Maintenance Fee - Application - New Act 2 2014-05-16 $50.00 2014-05-14
Registration of Documents $100.00 2014-07-08
Final $150.00 2014-07-08
Maintenance Fee - Patent - New Act 3 2015-05-19 $50.00 2015-05-15
Maintenance Fee - Patent - New Act 4 2016-05-16 $250.00 2016-07-08
Maintenance Fee - Patent - New Act 5 2017-05-16 $300.00 2017-07-11

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Abstract 2012-05-16 1 15
Description 2012-05-16 11 561
Claims 2012-05-16 3 103
Drawings 2012-05-16 4 103
Representative Drawing 2012-06-29 1 21
Cover Page 2012-08-02 1 49
Claims 2012-10-26 3 111
Claims 2013-12-11 4 136
Claims 2013-05-21 3 110
Representative Drawing 2014-02-03 1 18
Representative Drawing 2014-09-04 1 18
Cover Page 2014-09-04 1 47
Prosecution-Amendment 2012-08-06 1 19
Prosecution-Amendment 2012-08-28 3 144
Prosecution-Amendment 2012-10-26 6 251
Prosecution-Amendment 2013-11-15 2 89
Prosecution-Amendment 2013-02-21 4 185
Prosecution-Amendment 2013-05-21 7 304
Prosecution-Amendment 2013-12-11 6 232
Fees 2014-05-14 1 39
Correspondence 2014-07-04 1 43
Correspondence 2015-01-08 4 141
Correspondence 2015-02-06 2 256
Correspondence 2015-02-09 2 330
Fees 2015-05-15 1 52
Fees 2016-07-08 1 48
Fees 2017-07-11 2 151