CN107968447A - Smart machine low battery charging indicator light switching circuit - Google Patents
Smart machine low battery charging indicator light switching circuit Download PDFInfo
- Publication number
- CN107968447A CN107968447A CN201710237290.5A CN201710237290A CN107968447A CN 107968447 A CN107968447 A CN 107968447A CN 201710237290 A CN201710237290 A CN 201710237290A CN 107968447 A CN107968447 A CN 107968447A
- Authority
- CN
- China
- Prior art keywords
- indicator light
- low battery
- smart machine
- vio18
- ledinsin0
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
Abstract
The problem to be solved in the present invention is：A kind of smart machine low battery charging indicator light switching circuit is provided, to solve smart machine in the case where battery is crossed and put, charging indicator light shows the problem of abnormal.Technical solution is as follows：Including conventional sense indicator light flashing module, it is characterized in that：Further include low battery indicator light flashing module and protection module；Main control device of the conventional sense indicator light flashing module including indicator light LED1, equipment electricity when normal controls LEDINSIN0/1, Power Management Unit VIO18_PMU, external charging voltage VBUS and cell voltage VBAT；The equipment electricity is not at main control device control LEDINSIN0/1 work during low battery state, Power Management Unit VIO18_PMU output signals, and external charging voltage VBUS and cell voltage VBAT joints provide voltage and to include indicator light LED1 work.Beneficial effect is：Solve in the case of battery crosses and put, charging indicator light can not flicker, the problem of causing terminal consumer to judge smart machine damage by accident.Pressure after sale can be reduced, lifts user experience.
Description
Technical field
The present invention relates to a kind of flashing circuit of charging indicator light, more particularly to a kind of smart machine low battery charging instruction
Lamp switching circuit.
Background technology
In the prior art, smart machine charges in the case of battery is crossed and put, and equipment can carry out the hardware of longer period of time
Low current charge, until cell voltage meets system boot voltage, and the charging indicator light inside this quite a long time
Simply it is always on or even does not work, after ordinary user is probably because see the charging of equipment long period, can not still starts and nothing
Any mark, so as to judge equipment damage, causes wrong report to be reprocessed after sale.
The mobile phone of many brands occurs in order to avoid such case, when brownout will automatic shutdown, it is such as external
Certain brand mobile phone is in the case of extraneous low temperature, it is possible to meeting power supply also surplus more than 60, but undertension is forced to shut down.But
It is that this solution to the problem is to reduce the experience of user as cost, without fundamentally solution smart machine in electricity
Pond is crossed put in the case of, the problem of charging indicator light display is abnormal.
The content of the invention
The problem to be solved in the present invention is：A kind of smart machine low battery charging indicator light switching circuit is provided, to solve
Certainly for smart machine in the case where battery is crossed and put, charging indicator light shows the problem of abnormal.
Technical scheme is as follows：Smart machine low battery charging indicator light switching circuit, including conventional sense refer to
Show lamp flashing module, it is characterised in that：Further include low battery indicator light flashing module and protection module；
Main control device of the conventional sense indicator light flashing module including indicator light LED1, equipment electricity when normal controls
LEDINSIN0/1, Power Management Unit VIO18_PMU, external charging voltage VBUS and cell voltage VBAT；The equipment electricity
It is not at main control device control LEDINSIN0/1 work, Power Management Unit VIO18_PMU during low battery state and exports signal,
External charging voltage VBUS and cell voltage VBAT joints provide voltage and to include indicator light LED1 work；
The low battery indicator light flashing module includes indicator light LED1, miniature generator U1, external charging voltage VBUS；
When the equipment is in low battery state, main control device control LEDINSIN0/1 can not start, Power Management Unit VIO18_
PMU output signals do not export, and miniature generator U1 starts output signal, and external charging voltage VBUS provides voltage and to include instruction
Lamp LED1 works；
The protection module is that voltage caused by preventing two states operating voltage inconsistent mutually fills diode.
Further, the protection module is Schottky diode D1/D2.
Further, the miniature effective equipment of generator U1 low levels, when equipment electricity is not at low battery state, master control is set
Standby control LEDINSIN0/1 work, Power Management Unit VIO18_PMU output signals, U1 are not controlled；When equipment is in low electricity
During amount state, main control device control LEDINSIN0/1 can not start, Power Management Unit VIO18_PMU output signals do not export,
Miniature generator U1 starts.
The beneficial effects of the present invention are：Battery can be solved after to one's heart's content condition in the case of low cost by the present invention
Under, charging indicator light can not flicker, and cause terminal consumer to judge the problem of smart machine damages by accident.Pressure after sale can be reduced,
Lift user experience.
Brief description of the drawings
Fig. 1 is the control principle schematic diagram of the present invention
Fig. 2 is indicator light LED1 flicker operating circuits.
Fig. 3 is operating circuit of the present invention.
Embodiment
Below in conjunction with the accompanying drawings embodiments of the present invention are made with brief description.
Smart machine low battery charging indicator light switching circuit as shown in Figure 1, when smart machine can normally start work
When, low battery indicator light flashing module is closed, and functions of indicator light is controlled by conventional sense indicator light flashing module；When battery is in
Cross and lower state of charge, when conventional sense indicator light flashing module can not start, switch to low battery indicator light flashing module control
Indicator light flicker processed；Voltage caused by protection module can effectively prevent two states operating voltage inconsistent at the same time mutually fills existing
As.
As shown in Fig. 2, when equipment can work normally, indicator light LED1 flicker operating circuits.
As shown in figure 3, LED1 is indicator light, U1 is miniature generator, and D1/D2 is two pole of Schottky as protection module
Pipe；LEDINSIN0/1 is controlled by main control device under normal voltage, so as to control indicator light LED1 to work, because when system starts
Power Management Unit VIO18_PMU often exists, and miniature generator U1 is low effective, so miniature generator U1 is not controlled, is referred to
Show that lamp LED1 supply voltages are provided by charging voltage VBUS and cell voltage VBAT joints, and two Xiao Te of protection module D1/D2
Based diode can effectively prevent charging voltage VBUS from pouring in down a chimney phenomenon to cell voltage VBAT；When system can not start, power supply
Administrative unit VIO18_PMU is not exported, and miniature generator U1 is low effectively to be started to control indicator light flicker, at this time only by charging voltage
VBUS powers to indicator light LED1.
To sum up, no matter which kind of state cell voltage is in, and charging indicator light LED1 can normally flicker, and can give user
Clearly identify, smart machine is in low battery state, rather than distress condition.
One embodiment of the present of invention is described in detail above, but the content is only the preferable implementation of the present invention
Example, it is impossible to be construed as limiting the practical range of the present invention.All all the changes and improvements made according to the present patent application scope
Deng, should all still belong to the present invention patent covering scope within.
Claims (3)
1. smart machine low battery charging indicator light switching circuit, including conventional sense indicator light flashing module, it is characterised in that：
Further include low battery indicator light flashing module and protection module；
Main control device of the conventional sense indicator light flashing module including indicator light LED1, equipment electricity when normal controls
LEDINSIN0/1, Power Management Unit VIO18_PMU, external charging voltage VBUS and cell voltage VBAT；The equipment electricity
It is not at main control device control LEDINSIN0/1 work, Power Management Unit VIO18_PMU during low battery state and exports signal,
External charging voltage VBUS and cell voltage VBAT joints provide voltage and to include indicator light LED1 work；
The low battery indicator light flashing module includes indicator light LED1, miniature generator U1, external charging voltage VBUS；It is described
When equipment is in low battery state, main control device control LEDINSIN0/1 can not start, Power Management Unit VIO18_PMU is defeated
Go out signal not export, miniature generator U1 starts output signal, and external charging voltage VBUS provides voltage and to include indicator light
LED1 works；
The protection module is that voltage caused by preventing two states operating voltage inconsistent mutually fills diode.
2. smart machine low battery charging indicator light switching circuit according to claim 1, it is characterised in that：The protection
Module is Schottky diode D1/D2.
3. smart machine low battery charging indicator light switching circuit according to claim 1, it is characterised in that：Miniature generation
The effective equipment of device U1 low levels, when equipment electricity is not at low battery state, main control device control LEDINSIN0/1 work,
Power Management Unit VIO18_PMU exports signal, and U1 is not controlled；When equipment is in low battery state, main control device control
LEDINSIN0/1 can not start, Power Management Unit VIO18_PMU output signals do not export, and miniature generator U1 starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237290.5A CN107968447A (en) | 2017-04-12 | 2017-04-12 | Smart machine low battery charging indicator light switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237290.5A CN107968447A (en) | 2017-04-12 | 2017-04-12 | Smart machine low battery charging indicator light switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107968447A true CN107968447A (en) | 2018-04-27 |
Family
ID=61997380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710237290.5A Pending CN107968447A (en) | 2017-04-12 | 2017-04-12 | Smart machine low battery charging indicator light switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107968447A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102973A (en) * | 1992-09-18 | 1994-04-15 | Hitachi Ltd | State display lamp for battery operated electronic equipment |
| CN102710849A (en) * | 2012-05-14 | 2012-10-03 | 惠州Tcl移动通信有限公司 | Mobile terminal prompting relatively low electric quantity of battery through flash lamp |
| CN103825341A (en) * | 2014-03-21 | 2014-05-28 | 深圳天源中芯半导体有限公司 | Battery power indicating circuit for mobile power supply |
| CN104882925A (en) * | 2015-05-11 | 2015-09-02 | 深圳天珑无线科技有限公司 | Electronic device and driving circuit of charging indicating lamp of electronic device |
| CN205195344U (en) * | 2015-11-19 | 2016-04-27 | 上海与德通讯技术有限公司 | Cue circuit and electronic equipment charge |
| CN106486716A (en) * | 2016-12-02 | 2017-03-08 | 惠州Tcl移动通信有限公司 | A kind of method and system avoiding the display of mobile terminal electricity abnormal |
| CN206807046U (en) * | 2017-04-12 | 2017-12-26 | 上海影创信息科技有限公司 | Smart machine low battery charging indicator light switching circuit |
-
2017
- 2017-04-12 CN CN201710237290.5A patent/CN107968447A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102973A (en) * | 1992-09-18 | 1994-04-15 | Hitachi Ltd | State display lamp for battery operated electronic equipment |
| CN102710849A (en) * | 2012-05-14 | 2012-10-03 | 惠州Tcl移动通信有限公司 | Mobile terminal prompting relatively low electric quantity of battery through flash lamp |
| CN103825341A (en) * | 2014-03-21 | 2014-05-28 | 深圳天源中芯半导体有限公司 | Battery power indicating circuit for mobile power supply |
| CN104882925A (en) * | 2015-05-11 | 2015-09-02 | 深圳天珑无线科技有限公司 | Electronic device and driving circuit of charging indicating lamp of electronic device |
| CN205195344U (en) * | 2015-11-19 | 2016-04-27 | 上海与德通讯技术有限公司 | Cue circuit and electronic equipment charge |
| CN106486716A (en) * | 2016-12-02 | 2017-03-08 | 惠州Tcl移动通信有限公司 | A kind of method and system avoiding the display of mobile terminal electricity abnormal |
| CN206807046U (en) * | 2017-04-12 | 2017-12-26 | 上海影创信息科技有限公司 | Smart machine low battery charging indicator light switching circuit |
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