CN104578264A - Automatic load identification circuit of mobile power supply - Google Patents
Automatic load identification circuit of mobile power supply Download PDFInfo
- Publication number
- CN104578264A CN104578264A CN201410810069.0A CN201410810069A CN104578264A CN 104578264 A CN104578264 A CN 104578264A CN 201410810069 A CN201410810069 A CN 201410810069A CN 104578264 A CN104578264 A CN 104578264A
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- China
- Prior art keywords
- circuit
- power supply
- mcu
- main control
- mobile power
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- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- H02J7/0077—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an automatic load identification circuit of a mobile power supply. The automatic load identification circuit comprises a main control unit (MCU), a battery cell protection board circuit connected with the MCU, a power supply circuit, a charge control circuit, a boost output circuit and an LED display lamp, wherein a sampling circuit comprising resistors R23 and R27 connected in parallel and a detection circuit comprising resistors R5 and R14 connected in series are arranged in the boost output circuit; a Test pin of the MCU is connected with a serial connection point of the resistors R5 and R14; an output power supply 5V+ of the boost output circuit is unidirectionally communicated with an anode B+ of a battery through a diode D1, and an anode and a cathode of the MCU are communicated with a cathode of the battery during a power-off period. The automatic load identification circuit can be used in daily life, the awkward situation that the carried mobile power supply cannot charge a Bluetooth headset and a smart bracelet is avoided, and the potential hazard caused by a fact that the mobile power supply is connected with a load all the time and cannot be automatically switched off also can be avoided.
Description
Technical field
the present invention relates to portable power source, be specifically related to a kind ofly to carry out charging to small area analysis equipmentportable power source automatic recognition of load circuit.
Background technology
In the prior art, when the load current of portable power source is less than about 100mA, understand automatic shutdown, like this can not to small area analysis equipment charges such as bluetooth earphones, if plug small area analysis equipment charge, portable power source can disconnect automatically, is inconvenient to use.
Summary of the invention
The object of the invention is to, for the above-mentioned defect of prior art, provide a kind of
small area analysis equipment can to carry out chargingportable power source automatic recognition of load circuit.
There is provided a kind of portable power source automatic recognition of load circuit, the battery core baffle circuit, power supply circuits, charging control circuit, boosting output circuit, the LED display lamp that comprise main control MCU, are connected with main control MCU; Be provided with the sample circuit composed in parallel by resistance R23, R27 in described boosting output circuit, the testing circuit be composed in series by resistance R5, R14, the Test pin of described main control MCU is connected with the serial connection point of described resistance R5, R14; Out-put supply 5V+ by diode D1 and anode B+ one-way conduction, the positive and negative level of main control MCU when shutdown and battery cathode connect.
In foregoing circuit, 5V+ is directly with anode B+ one-way conduction in any case, the positive and negative level of IC when shutting down directly and battery cathode connect, when there being load to insert USB, the voltage of 5V+ produces a voltage to negative pole to 5V-by load positive pole, namely on Test in the pulse of a production rising edge, to MCU reality an external interrupt after it starts to wake up and normally works.Load power source produces a pressure drop by the sampling resistor of R23, R27, and MCU detects the size of load current at that time by Test pin.When inserting load first, if when detecting that load current is less than 200mA, output will a direct-open, only at manual key or time delay six hours (having error range) automatic shutdowns afterwards; If detect that load current is greater than 200mA first, the magnitude of voltage that MCU will constantly sample on Test, now load current is reduced to 50mA(error range) time, portable power source will automatically cut out output and enter resting state.When portable power source is started shooting, load current is greater than certain value (such as 200mA) and just enters automatic shutdown pattern, namely retains small area analysis automatic shut-off function.If load current is less than this value during start, will no longer automatic shutdown, there is output, until unloaded or continue automatic shutdown after six hours always.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
With reference to shown in Fig. 1, Fig. 2: design a kind of portable power source automatic recognition of load circuit, the battery core baffle circuit, power supply circuits, charging control circuit, boosting output circuit, the LED display lamp that be provided with main control MCU, are connected with main control MCU; Be provided with the sample circuit composed in parallel by resistance R23, R27, the testing circuit be composed in series by resistance R5, R14 in boosting output circuit, the Test pin of described main control MCU is connected with the serial connection point of described resistance R5, R14; The out-put supply 5V+ of boosting output circuit by diode D1 and anode B+ one-way conduction, the positive and negative level of main control MCU when shutdown and battery cathode connect.
5V+ is directly with anode B+ one-way conduction in any case, the positive and negative level of IC when shutting down directly and battery cathode connect, when there being load to insert USB, the voltage of 5V+ produces a voltage to negative pole to 5V-by load positive pole, namely on Test in the pulse of a production rising edge, to MCU reality an external interrupt after it starts to wake up and normally works.Load power source produces a pressure drop by the sampling resistor of R23, R27, and MCU detects the size of load current at that time by Test pin.When inserting load first, if when detecting that load current is less than 200mA, output will a direct-open, only at manual key or time delay six hours (having error range) automatic shutdowns afterwards; If detect that load current is greater than 200mA first, the magnitude of voltage that MCU will constantly sample on Test, now load current is reduced to 50mA(error range) time, portable power source will automatically cut out output and enter resting state.
Under normal circumstances, portable power source has little load current automatic shutdown and automatic machine-operated two kinds always, and along with the development of science and technology, wearable device is more and more universal, and the former can not give bluetooth earphone, and the charging currents such as Intelligent bracelet are at the equipment charge of about 50mA; Latter one direct-open, if not human intervention, a direct-open exports, and makes portable power source itself and is in charging operating state by charging device always, reduction product useful life, wastes energy simultaneously! The present invention can be used in daily life, avoids carrying with portable power source but cannot to the embarrassment of bluetooth earphone, Intelligent bracelet charging, and portable power source one straight cutting also can be avoided load and the not hidden danger brought of automatic shutdown.
Claims (1)
1. a portable power source automatic recognition of load circuit, the battery core baffle circuit, power supply circuits, charging control circuit, boosting output circuit, the LED display lamp that comprise main control MCU, are connected with main control MCU; It is characterized in that: be provided with the sample circuit composed in parallel by resistance R23, R27 in described boosting output circuit, the testing circuit be composed in series by resistance R5, R14, the Test pin of described main control MCU is connected with the serial connection point of described resistance R5, R14; Boosting output circuit out-put supply 5V+ by diode D1 and anode B+ one-way conduction, the positive and negative level of main control MCU when shutdown and battery cathode connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810069.0A CN104578264B (en) | 2014-12-24 | 2014-12-24 | Mobile power automatic recognition of load circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410810069.0A CN104578264B (en) | 2014-12-24 | 2014-12-24 | Mobile power automatic recognition of load circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104578264A true CN104578264A (en) | 2015-04-29 |
| CN104578264B CN104578264B (en) | 2018-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410810069.0A Active CN104578264B (en) | 2014-12-24 | 2014-12-24 | Mobile power automatic recognition of load circuit |
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| Country | Link |
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| CN (1) | CN104578264B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953666A (en) * | 2015-06-30 | 2015-09-30 | 黄伟聪 | Power supply control method based on mobile power supply |
| CN106124842A (en) * | 2016-07-04 | 2016-11-16 | 芯海科技（深圳）股份有限公司 | The small area analysis testing circuit of a kind of portable power source and method |
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
| CN106899058A (en) * | 2017-03-07 | 2017-06-27 | 东莞市太业电子股份有限公司 | Aptitude chargeable circuit and the portable power source using the aptitude chargeable circuit |
| CN108983066A (en) * | 2018-04-25 | 2018-12-11 | 上海芯导电子科技有限公司 | A kind of electric current automatic detection circuit |
| CN112531808A (en) * | 2020-11-09 | 2021-03-19 | 甄十信息科技（上海）有限公司 | Battery protection method and device based on mobile terminal |
| CN114461000A (en) * | 2022-01-14 | 2022-05-10 | 深圳市卡贝电子技术有限公司 | Low-power-consumption maintaining circuit, control method and adapter |
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| CN204012830U (en) * | 2014-07-22 | 2014-12-10 | 厦门广开电子有限公司 | Portable power source |
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| US6337557B1 (en) * | 1999-01-25 | 2002-01-08 | Barry K. Kates | External universal battery charging apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017000597A1 (en) * | 2015-06-30 | 2017-01-05 | 广东天物新材料科技有限公司 | Power supply control method based on mobile power supply |
| CN104953666A (en) * | 2015-06-30 | 2015-09-30 | 黄伟聪 | Power supply control method based on mobile power supply |
| EA036989B1 (en) * | 2015-06-30 | 2021-01-25 | Гюангдонг Флексварм Адвансед Материалс Енд Технологи Ко., Лтд. | Power supply control method based on mobile power supply |
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| CN106124842B (en) * | 2016-07-04 | 2019-05-28 | 芯海科技（深圳）股份有限公司 | A kind of the low current detection circuit and method of mobile power source |
| CN106124842A (en) * | 2016-07-04 | 2016-11-16 | 芯海科技（深圳）股份有限公司 | The small area analysis testing circuit of a kind of portable power source and method |
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
| CN106899058A (en) * | 2017-03-07 | 2017-06-27 | 东莞市太业电子股份有限公司 | Aptitude chargeable circuit and the portable power source using the aptitude chargeable circuit |
| CN108983066A (en) * | 2018-04-25 | 2018-12-11 | 上海芯导电子科技有限公司 | A kind of electric current automatic detection circuit |
| CN112531808A (en) * | 2020-11-09 | 2021-03-19 | 甄十信息科技（上海）有限公司 | Battery protection method and device based on mobile terminal |
| CN114461000A (en) * | 2022-01-14 | 2022-05-10 | 深圳市卡贝电子技术有限公司 | Low-power-consumption maintaining circuit, control method and adapter |
| CN114461000B (en) * | 2022-01-14 | 2023-11-24 | 深圳市卡贝电子技术有限公司 | Low-power consumption maintaining circuit, control method and adapter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104578264B (en) | 2018-08-10 |
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