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Mobile Phone Patent Abstract
A mobile phone battery pack with a recording device for memorizing
total recharged number of times is disclosed. The recording device
includes a battery charging detecting circuit, a reference clock
generating circuit, a central processing unit, a recharged times
recording unit. When placing the mobile phone battery in the battery
charger for recharging, the total recharged number of times recorded
in the recharged times recording unit will be increased by one.
Preferably, the mobile phone battery pack incorporates with a display
type battery charger with a display. The battery pack is provided
with a data output terminal and a series data output device. So,
the total recharged number of times memorized in the battery are
transmitted to the battery charger through the data output terminal
and the recharged number of times is displayed on the display of
the battery charger.
Mobile Phone Patent Claims
I claim:
1. A mobile phone battery pack, comprising:
a battery casing having an inner space for retaining a battery
unit therein, provided with a plurality of metal contacts comprising
a positive power contact, a negative power contact, and a data output
terminal;
a printed circuit board fixed in the inner space of the battery
casing, comprising a positive power line connected to the positive
power terminal, a negative power line connected to the negative
power terminal, and a data output line connected to the data output
terminal formed on the battery casing; and
a charged number recording circuit arranged on the printed circuit
board for accumulating the recharged number of times of the battery.
2. The battery pack as claimed in claim 1, wherein the charged
number recording device comprising:
a battery charging detecting circuit for detecting a charging current
passing through the battery unit and then generating a triggering
signal;
a reference clock generating circuit for generating a reference
clock signal;
a central processing unit for receiving the triggering signal produced
by the battery charging detecting circuit and the reference clock
signal produced by the reference clock generating circuit; and
a recharged times recording unit connected to the central processing
unit;
when the central processing unit receives the triggering signal
produced by the battery charging detecting circuit and a predetermined
accumulating recharging time is reached, the total recharged number
recorded in the recharged times recording unit is increased by one.
3. The battery pack as claimed in claim 2, wherein the battery
charging detecting circuit comprising:
a series resistor connecting with the battery unit in series; and
a current differential amplifier having two input terminals connected
across the series resistor in parallel, having an output terminal
connected to the central processing unit;
when a charging current passes through the battery unit and the
series resistor, the current differential amplifier send out a triggering
signal via its output terminal to the central processing unit.
4. The battery pack as claimed in claim 3, wherein the battery
charging detecting circuit further comprises a switch element controlled
by the triggering signal, the switch element being switched on when
the triggering signal being produced for supplying an electric power
of the battery to the central processing unit, while the switch
element being switch off when the triggering signal being not produced
for suspending the power of the battery to the central processing
unit.
5. The battery pack as claimed in claim 2, further comprising a
series data output device having a data input terminal connected
to the central processing unit and a data output terminal connected
to the data output terminal of the battery for sending out the recharged
number of times recorded in the recharged times recording unit to
the data output terminal under control of central processing unit.
6. The battery pack as claimed in claim 2, further comprising a
battery information recording device coupled to the central processing
unit for recording a plurality of information comprising battery
type, date of production, batch number, series number, rated voltage,
and rated current of the battery.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to a mobile phone battery
pack, and in particular to a battery pack with a recording device
for accumulating the recharged number of times.
2. Description of the Prior Art
The conventional battery charger for the mobile phone mainly includes
a casing, a charging receptacle, and a number of indicating lamps
showing the charging conditions. When placing a mobile phone battery
to be recharged on the charging receptacle, the battery will be
recharged under control of a control circuit.
However, the conventional battery charger for the mobile phone
shows the charging condition just by a number of indicative lamps
switching on/off or flashing, so that the user can not exactly realize
the detail charging conditions during charging.
Besides, the battery has a standard usable age or total recharged
times, for example discharging and recharging for 500 times. The
user can not find out if the battery is over the usable age or should
be replaced by a new one when charging the mobile phone by the conventional
charger.
For the battery manufacturer, sometimes the battery is in good
condition when production, but the performance may be not so good
as expected because of the delivering process, the temperature or
humidity of the storing environment, storing period, or incorrect
using by the user after leaving the factory. When the manufacturer
handle those complains from the consumers, it still can not be checked
out that the problem comes from the bad quality of the battery itself,
over-using of the usable age, or the incorrect using by the user.
Even the information of the battery such as the date of production,
batch number, or series number, also can not be found out.
It is thus desirable to provide a mobile phone battery pack with
a recording device for memorizing the recharged number of times.
Preferably, the battery pack incorporates with a display type battery
charger with a LCD display for displaying the charging statuses
and various internal information of the battery.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to
provide a mobile phone battery pack equipped with a recording device
capable of recording various information of the battery pack.
The other object of the present invention is to provide a mobile
phone battery pack with a data recording device for memorizing the
recharged number of times of the battery. Every time when the battery
finished recharging, the records of accumulated recharged number
will be increased by one. The recorded number may be used as a reference
to determine the usable age of the battery.
Another object of the present invention is to provide a mobile
phone battery pack with a recording device and a series data output
device, thereby the data of the battery memorized in the record
device may be transmitted to a display type battery charger. Through
the information displayed on the display of the charger, the user
may simply know the using condition of the battery.
To achieve the above objects, in accordance with the present invention,
there is provided a mobile phone battery pack with a recording device
incorporating with a display type battery charger for displaying
the recharged number of times of the battery. The battery pack comprises
a casing arranged with a number of metal contacts thereon, a battery
unit received inside the inner space of the casing, a printed circuit
board arranged inside the casing, and a recording device for memorizing
the recharged number of times of the battery. The recording device
includes a battery charging detecting circuit, a reference clock
generating circuit, a central processing unit, and a recharged times
recording unit.
When placing the mobile phone battery into the charging receptacle
of the charger for recharging, the total recharged number of times
recorded in the recharged times recording will be increased by one,
and at the same time the recharged number of times will be displayed
on the display of the battery charger.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be apparent to those skilled in the
art by reading the following description of a preferred embodiment
thereof, with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view showing a mobile phone battery pack
being separated from a display type battery charger in accordance
with a preferred embodiment of the present invention;
FIG. 2 is an example showing a number being displayed on the display
of FIG. 1;
FIG. 3 is an exploded view of the mobile phone battery pack of
the present invention;
FIG. 4 is a schematic circuit diagram of the control circuit of
the present invention; and
FIG. 5 is a further control circuit diagram of the battery charging
detecting circuit of FIG. 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to the drawings, in particularly to FIGS. 1 and
2, according to a preferred embodiment of the present invention,
the mobile phone battery pack 1 with recording device for memorizing
the recharged number of times of the present invention incorporates
with a battery charger 2 with a display 21 for displaying the total
recharged number of times of the battery 1 on the display 21. Typically,
the battery pack 1 is provided with a positive power terminal V+,
a negative power terminal GND, and a data output terminal DATA.
The display type battery charger 2 is formed with a charging receptacle
22 having a number of metal contacts 23a, 23b, and 23c arranged
thereon for contacting to the positive power terminal V+, negative
power terminal GND, and data output terminal DATA of the battery
1 respectively when placing the battery 1 in the charging receptacle
22. Usually, the charger 2 is further formed with a mobile phone
charging receptacle 28 for a mobile phone being inserted therein
directly and recharged.
Preferably, as shown in FIG. 2, excepting a full charged indicator
24 and a charging indicator 25, the battery charger 2 is further
arranged with a LCD display 21 for displaying the total recharged
number of times of the mobile phone. Furthermore, a number of charging
status indicators 26 may be arranged on an area near the display
21 for showing the charging condition and capacity of the battery.
With reference to FIG. 3, the mobile phone battery pack 1 of the
present invention comprises a battery casing composed of an upper
casing 10a and a lower casing 10b assembling together to form an
inner space for receiving a battery unit 3 therein. The positive
power terminal V+, the negative power terminal GND, and the data
output terminal DATA are arranged on the upper casing 10a of the
battery pack 1. The data output terminal DATA may be arranged in
a line the same as the positive power terminal V+ and the negative
power terminal GND or in another suitable place on the upper casing
10a.
A printed circuit board 11 is fixed in a suitable place in the
inner space between the upper casing 10a and the lower casing 10b,
having a positive power line V+', a negative power line GND', and
a data output line DATA'. The positive power line V+' and the negative
power line GND' are correspondingly connected to the positive power
terminal V+ and the negative power terminal GND on the upper casing
10a respectively, and the data output line DATA' is connected to
the data output terminal DATA on the upper casing 10a.
A control circuit is arranged on the printed circuit board 11 for
recording the number of recharged times. When placing the battery
1 in the charging receptacle 22 for recharging, the charged number
of the times memorized in the recording device will be sent out
from the data output terminal DATA of the battery 1 to the battery
charger 2 and be displayed on the display 21 of the charger 2.
FIG. 4 is a schematic circuit diagram of the control circuit of
the present invention. The battery charger 2 comprises a charging
circuit 27 and a display 21. The positive power line V+' and the
negative power line GND' of the charger 2 are connected to the positive
power terminal V+ and the negative power terminals GND of the battery
respectively when charging.
The recording device for memorizing the recharged number of times
comprises a battery charging detecting circuit 41 connected with
the battery unit 3 of the mobile phone battery 1. When detecting
a charging current passing through the battery unit 3 of the battery
1, the battery charging detecting circuit 41 will generate a triggering
signal S1 to the central processing unit 42.
A reference clock generating circuit 43 connects to the central
processing unit 42 for producing a reference clock signal CLK. The
central processing unit 42 can receive the triggering signal S1
produced by the battery charging detecting circuit 41 and the reference
clock signal CLK produced by the reference clock generating circuit
43.
A recharged times recording unit 44 is connected to a data port
of the central processing unit 42, capable of recording the total
recharged number of times of the battery 1. When the central processing
unit 42 receives the triggering signal S1 produced by the battery
charging detecting circuit 41, the central processing unit 42 will
start counting based on the reference clock signal CLK. When a predetermined
accumulating recharging time, such as two hours in fast charging
mode or eight hours in slow charging mode, the total number recorded
in the recharged times recording unit 44 will be increased by one
under control of the central processing unit 42.
Different type of mobile phone battery pack, such as Ni--H or Lithium
battery, has different electric characteristic, therefore the recharging
time needed is various. Besides, the habit differs from each user
when recharging the battery. The problems of various types of the
battery and different using habits may be easily overcome by modifying
the program of the central processing unit.
Besides, a series data output device 45 has a data input terminal
connected to an output port of the central processing unit 42 and
an output terminal connected to the data output line DATA', for
sending out the total recharged number of times memorized in the
recharged times recording unit 44 to the battery charger 2 through
the data output line DATA'. So, the recorded total recharged number
of times of the battery may be displayed on the display 21 of the
battery charger 2.
Furthermore, the battery pack of the present invention further
comprises a battery information recording device 46 for recording
various internal information of the battery 1, such as battery type,
date of production, batch number, series number, rated voltage,
and rated current. All these data may be also sent to the charger
2 through the data output line DATA' under control of the central
processing unit 42.
FIG. 5 shows the further control circuit of the battery charging
detecting circuit in FIG. 4, comprising a series resistor 410 and
a current differential amplifier 411. The series resistor 410 is
connected with the battery unit 3 in series. The current differential
amplifier 411 has two input terminals connected to the two terminals
of the series resistor 410 in parallel, so that the charging current
Ic passing through the battery unit 3 may be detected. Upon detecting
the charging current Ic, the current differential amplifier 411
will generate a triggering signal S1 to the central processing unit
42.
The battery charging detecting circuit 41 further comprises a switch
element 412 having a gate terminal connected to the output terminal
of the current differential amplifier 411. When the triggering signal
S1 is produced, the switch element 412 will be switched on, so that
the electric power of the battery unit 3 may be supplied to the
power source terminal Vcc of the central processing unit 42. Alternatively,
when the triggering signal S1 is not produced, the switch element
412 will be switch off to suspend the power to the central processing
unit 42 so as to save electric power energy.
Although the present invention has been described with respect
to the preferred embodiment, it is contemplated that a variety of
modifications, variations and substitutions may be done without
departing from the scope of the present invention that is intended
to be defined by the appended claims. |