CN103944200A - Portable electronic device - Google Patents
Portable electronic device Download PDFInfo
- Publication number
- CN103944200A CN103944200A CN201310020771.2A CN201310020771A CN103944200A CN 103944200 A CN103944200 A CN 103944200A CN 201310020771 A CN201310020771 A CN 201310020771A CN 103944200 A CN103944200 A CN 103944200A
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- China
- Prior art keywords
- comparator
- electron device
- portable electron
- battery
- electrically connected
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a portable electronic device which comprises a battery, a charging interface, a comparator, a voltage division circuit and an indicating circuit. The charging interface is electrically connected with the voltage division circuit, the voltage division circuit is electrically connected with the battery and the comparator so that the feed lowest booting voltage and the current voltage of the battery can be provided for the comparator, the comparator is further electrically connected with the indicating circuit, the comparator is used for comparing the lowest booting voltage and the current voltage of the battery and outputting a control signal according to a comparison result, and therefore the indicating circuit is controlled. According to the indicating circuit, a user can acquire whether the battery of the portable electronic device is in an over-discharging state or not in time.
Description
Technical field
The present invention relates to a kind of portable electron device, relate in particular to a kind of can the portable electron device of pilot cell in over-discharge state.
Background technology
Along with developing rapidly and the raising day by day of people's living standard of wireless communication technology, the information processing technology, mobile phone, personal digital assistant (personal digital assistant, etc. PDA) portable electron device competitively emerges in large numbers, enter into huge numbers of families, make consumer can enjoy all facilities that high-tech brings whenever and wherever possible, make these portable electron devices become the indispensable part of modern's daily life.
Use in the process of these portable electron devices user, for various reasons, sometimes can make the battery of portable electron device inside occur the state of overdischarge, be that the current voltage of its internal cell is lower than the minimum start voltage of portable electron device, while causing user to charge by charging inlet, this portable electron device can not show charging icon or charging instruction, makes user take for this portable electron device and breaks down.
Summary of the invention
In view of this, be necessary to provide a kind of can the portable electron device of pilot cell in over-discharge state.
A kind of portable electron device, it comprises battery, charging inlet comparator, bleeder circuit and indicating circuit, described charging inlet and bleeder circuit are electrically connected, described bleeder circuit and battery and comparator are electrically connected, so that the minimum start voltage of feed-in and battery current voltage to be provided to comparator, described comparator is also electrically connected with indicating circuit, described comparator is in order to minimum start voltage and battery current voltage and export a control signal according to comparative result, and then controls described indicating circuit.
Compared to prior art, described portable electron device obtains by comparator and minimum start voltage and battery current voltage, with according to comparative result control indicating circuit, and then be convenient to user and understand the voltage condition of the battery of this portable electron device, thereby avoid because of battery over-discharge, portable electron device cannot show charging icon in the time of charging, allows user take for the situation that this portable electron device breaks down.
Brief description of the drawings
Fig. 1 is the circuit diagram of the portable electron device of preferred embodiment of the present invention.
Main element symbol description
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Figure 1 shows that the portable electron device 100 of preferred embodiment of the present invention, this portable electron device 100 can be mobile phone, personal digital assistant etc.
This portable electron device 100 comprises battery 10, charging inlet 20, bleeder circuit 30, comparator 40 and indicating circuit 50.This battery 10 provides working power for portable electron device 100, interface end (the USB charging inlet end of for example mobile phones universal when this charging inlet 20 charges for this portable electron device 100, its charging voltage is generally 5V), by this charging inlet 20 and an external power source (not shown) are electrically connected, can be this portable electron device 100 and charge.
This bleeder circuit 30 is electrically connected between comparator 40 and charging inlet 20.This bleeder circuit 30 comprises the first resistance R 1 and the second resistance R 2, and this charging inlet 20 is successively by the first resistance R 1 and the second resistance R 2 ground connection.This bleeder circuit 30 is for providing minimum start voltage to comparator 40, specifically, by the resistance value of suitable adjusting the first resistance R 1 and the second resistance R 2, make the second resistance R 2 both end voltage equal the minimum start voltage of portable electron device 100, for opening portable electron device 100.
This comparator 40 comprises power input 41, first input end 42, the second input 43, earth terminal 44 and output 45.This power input 41 is electrically connected with charging inlet 20, to obtain operating voltage.This first input end 42 is electrically connected between the first resistance R 1 and the second resistance R 2, the minimum start voltage providing to obtain bleeder circuit 30.This second input 43 is electrically connected with battery 10, to obtain the current voltage of battery 10.These earth terminal 44 ground connection, this output 45 is electrically connected with indicating circuit 50.The current voltage of the battery 10 that the minimum start voltage that this comparator 40 obtains for comparison first input end 42 and the second input 43 obtain, and export control signal according to comparative result by output 45.Particularly, when minimum start voltage is during higher than the current voltage of battery 10, the output 45 of comparator 40 is exported the control signal of high level (voltage of for example 2V), when minimum start voltage is during lower than the current voltage of battery 10, the control signal of output 45 output low levels (voltage of for example 0V) of comparator 40.
This indicating circuit 50 when the over-discharge state, is made instruction for the battery 10 at portable electron device 100.In the present embodiment, this indicating circuit 50 is a light-emitting diode (light-emitting diode, LED), and its output 45 anodal and comparator 40 is electrically connected, minus earth.In the time that the output 45 of comparator 40 is exported high level, this LED lights, and in the time of output 45 output low level of comparator 40, this LED does not work.
Further introduce the operation principle of this portable electron device 100 below: in the time that portable electron device 100 need to charge, charging inlet 20 is connected with an external power source (not shown), comparator 40 is switched on power and started working by power input 41.Meanwhile, bleeder circuit 30 carries out voltage division processing to the charging voltage at charging inlet 20 places, inputs the minimum start voltage of portable electron device 100 with the first input end 42 to comparator 40.In addition, the second input 43 of comparator 40 obtains the current voltage of the battery 10 of portable electron device 100.When the voltage (being minimum start voltage) obtaining when first input end 42 is greater than the voltage (current voltage of battery 10) that the second input 43 obtains, the output 45 of comparator 40 is exported high level, and indicating circuit 50 is worked (being lumination of light emitting diode) to represent that current battery 10 is in over-discharge state.When the voltage obtaining when first input end 42 is less than the voltage that the second input 43 obtains, output 45 output low levels of comparator 40, indicating circuit 50 does not work to represent that current battery 10 electric weight are in normal condition.
Portable electron device 100 of the present invention obtains by comparator 40 and compares first input end 42 voltages and the second input 43 voltages, with according to comparative result control indicating circuit 50, and then be convenient to user and understand in time the voltage condition of the battery 10 of this portable electron device 100, thereby avoid because of battery 10 overdischarge, portable electron device 100 cannot show charging icon in the time of charging, allows user take for the situation that this portable electron device 100 breaks down.
Claims (8)
1. a portable electron device, it comprises battery and charging inlet, it is characterized in that: described portable electron device also comprises comparator, bleeder circuit and indicating circuit, described bleeder circuit and charging inlet are electrically connected, described comparator is electrically connected with bleeder circuit and battery simultaneously, to obtain a minimum start voltage and a battery current voltage from bleeder circuit and battery respectively, described comparator is also electrically connected with indicating circuit, described comparator is in order to more described minimum start voltage and battery current voltage, and export a control signal according to comparative result, and then control described indicating circuit.
2. portable electron device as claimed in claim 1, is characterized in that: described comparator comprises power input and earth terminal, and described power input is connected with charging inlet, thinks that comparator provides working power, described earth terminal ground connection.
3. portable electron device as claimed in claim 1, is characterized in that: described bleeder circuit comprises the first resistance and the second resistance, and described charging inlet is successively by the first resistance and the second grounding through resistance.
4. portable electron device as claimed in claim 3, it is characterized in that: described comparator also comprises first input end and the second input, described first input end is electrically connected between the first resistance and the second resistance, and described the second input and battery are electrically connected.
5. portable electron device as claimed in claim 1, is characterized in that: described comparator also comprises with output, and described output and indicating circuit are electrically connected with to indicating circuit output control signal.
6. portable electron device as claimed in claim 5, is characterized in that: described indicating circuit comprises a light-emitting diode, and the positive pole of institute's light-emitting diode and the output of comparator are electrically connected, minus earth.
7. portable electron device as claimed in claim 6, is characterized in that: when described minimum start voltage is during higher than battery current voltage, and the output output high level of comparator, described light-emitting diode work.
8. portable electron device as claimed in claim 6, is characterized in that: when described minimum start voltage is during lower than battery current voltage, and the output output low level of comparator, described light-emitting diode is not worked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020771.2A CN103944200A (en) | 2013-01-21 | 2013-01-21 | Portable electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310020771.2A CN103944200A (en) | 2013-01-21 | 2013-01-21 | Portable electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103944200A true CN103944200A (en) | 2014-07-23 |
Family
ID=51191749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310020771.2A Pending CN103944200A (en) | 2013-01-21 | 2013-01-21 | Portable electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103944200A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008312442A (en) * | 2003-11-14 | 2008-12-25 | Sony Corp | Battery pack, battery protection processing apparatus, and start-up control method for the battery protection processing apparatus |
| TW201042885A (en) * | 2009-05-22 | 2010-12-01 | Chi Mei Comm Systems Inc | Charging indication circuit and the protable electronic device employing the same |
| CN201690258U (en) * | 2010-01-26 | 2010-12-29 | 中兴通讯股份有限公司 | Mobile terminal charging control device |
-
2013
- 2013-01-21 CN CN201310020771.2A patent/CN103944200A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008312442A (en) * | 2003-11-14 | 2008-12-25 | Sony Corp | Battery pack, battery protection processing apparatus, and start-up control method for the battery protection processing apparatus |
| TW201042885A (en) * | 2009-05-22 | 2010-12-01 | Chi Mei Comm Systems Inc | Charging indication circuit and the protable electronic device employing the same |
| CN201690258U (en) * | 2010-01-26 | 2010-12-29 | 中兴通讯股份有限公司 | Mobile terminal charging control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140723 |