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
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- main control
- control mcu
- resistors
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/685—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using connection detecting circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
一种移动电源负载自动识别电路，包括主控MCU、与主控MCU相连接的电芯保护板电路、供电电路、充电控制电路、升压输出电路、LED显示灯；所述升压输出电路中设有由电阻R23、R27并联组成的取样电路，由电阻R5、R14串联组成的检测电路，所述主控MCU的Test引脚与所述电阻R5、R14的串接点相连接；升压输出电路输出电源5V+通过二极管D1与电池正极B+单向导通，主控MCU的正负级在关机时与电池负极接通。本发明可用于日常生活中，避免随身携带着移动电源但无法给蓝牙耳机、智能手环充电的尴尬，也可避免移动电源一直插着负载而不自动关机带来的隐患。
A mobile power supply load automatic identification circuit, including a main control MCU, a battery protection board circuit connected to the main control MCU, a power supply circuit, a charging control circuit, a boost output circuit, and an LED display lamp; in the boost output circuit A sampling circuit composed of resistors R23 and R27 connected in parallel, a detection circuit composed of resistors R5 and R14 connected in series, the Test pin of the main control MCU is connected to the series connection point of the resistors R5 and R14; a boost output circuit The output power supply 5V+ is unidirectionally connected to the positive pole B+ of the battery through the diode D1, and the positive and negative poles of the main control MCU are connected to the negative pole of the battery when the power is turned off. The invention can be used in daily life to avoid the embarrassment of carrying a mobile power supply but being unable to charge the Bluetooth earphones and smart bracelets, and can also avoid the hidden dangers caused by the mobile power supply being plugged in all the time without automatically shutting down.
Description
技术领域 technical field
本发明涉及移动电源，具体涉及一种可以给小电流设备进行充电的移动电源负载自动识别电路。 The invention relates to a mobile power supply, in particular to a mobile power supply load automatic identification circuit capable of charging small current devices .
背景技术 Background technique
在现有技术中，移动电源的负载电流小于100mA左右时会自动关机，这样将不能给蓝牙耳机等小电流设备充电，如果插上小电流设备充电，移动电源会自动断开，不方便使用。 In the prior art, when the load current of the mobile power supply is less than about 100mA, it will automatically shut down, so that it will not be able to charge low-current devices such as Bluetooth headsets. If the low-current device is plugged in for charging, the mobile power supply will automatically disconnect, which is inconvenient to use.
发明内容 Contents of the invention
本发明的目的在于，针对现有技术的上述缺陷，提供一种可以给小电流设备进行充电的移动电源负载自动识别电路。 The object of the present invention is to provide a mobile power load automatic identification circuit capable of charging small current devices , aiming at the above-mentioned defects of the prior art.
提供一种移动电源负载自动识别电路，包括主控MCU、与主控MCU相连接的电芯保护板电路、供电电路、充电控制电路、升压输出电路、LED显示灯；所述升压输出电路中设有由电阻R23、R27并联组成的取样电路，由电阻R5、R14串联组成的检测电路，所述主控MCU的Test引脚与所述电阻R5、R14的串接点相连接；输出电源5V+通过二极管D1与电池正极B+单向导通，主控MCU的正负级在关机时与电池负极接通。 A mobile power supply load automatic identification circuit is provided, including a main control MCU, a battery protection board circuit connected to the main control MCU, a power supply circuit, a charging control circuit, a boost output circuit, and an LED display lamp; the boost output circuit There is a sampling circuit composed of resistors R23 and R27 in parallel, and a detection circuit composed of resistors R5 and R14 in series. The Test pin of the main control MCU is connected to the series connection point of the resistors R5 and R14; the output power supply is 5V+ The diode D1 conducts unidirectionally with the positive pole B+ of the battery, and the positive and negative poles of the main control MCU are connected to the negative pole of the battery when the power is turned off.
上述电路中，5V+是任何情况下都是直接跟电池正极B+单向导通的，IC的正负级在关机时直接与电池负极接通，当有负载插入USB时5V+的电压通过负载正极到负极对5V-产生一个电压,即在Test上在生产一个上升沿的脉冲，对MCU现实一个外部中断后其开始唤醒并正常工作。负载电源将在R23、R27的采样电阻上产生一个压降，MCU通过Test引脚检测当时负载电流的大小。首次插入负载时，如果检测到负载电流小于200mA时，输出将会一直开启，仅在手动按键或延时六个小时（有误差范围）后自动关机；如果首次检测到负载电流大于200mA，MCU将不断采样Test上的电压值，此时负载电流减小到50mA（有误差范围）时，移动电源将会自动关闭输出进入休眠状态。当移动电源开机时，负载电流大于一定值（比如200mA）就进入自动关机模式，即保留小电流自动关机功能。如果开机时负载电流小于这个值，将不再自动关机，一直有输出，直到空载或持续六个小时后自动关机。 In the above circuit, 5V+ is directly connected to the positive pole of the battery B+ in any case. The positive and negative poles of the IC are directly connected to the negative pole of the battery when the power is turned off. When a load is inserted into the USB, the voltage of 5V+ passes through the positive pole of the load to the negative pole. A voltage is generated for 5V-, that is, a rising edge pulse is produced on the Test, and after an external interrupt is shown to the MCU, it starts to wake up and work normally. The load power supply will generate a voltage drop on the sampling resistors of R23 and R27, and the MCU will detect the current load current through the Test pin. When the load is inserted for the first time, if the load current is detected to be less than 200mA, the output will always be on, and it will be automatically turned off only after a manual key or a delay of six hours (with an error range); if the load current is detected to be greater than 200mA for the first time, the MCU will Continuously sample the voltage value on Test, when the load current decreases to 50mA (with error range), the mobile power supply will automatically turn off the output and enter the sleep state. When the mobile power supply is turned on, if the load current is greater than a certain value (such as 200mA), it will enter the automatic shutdown mode, that is, the low current automatic shutdown function is retained. If the load current is less than this value when it is turned on, it will no longer automatically shut down, and there will be output until it is no-load or automatically shuts down after six hours.
附图说明 Description of drawings
图1是本发明电路原理方框图； Fig. 1 is a schematic block diagram of the circuit of the present invention;
图2是本发明电路原理图。 Fig. 2 is a schematic circuit diagram of the present invention.
具体实施方式 Detailed ways
参照图1、图2所示：设计一种移动电源负载自动识别电路，设有主控MCU、与主控MCU相连接的电芯保护板电路、供电电路、充电控制电路、升压输出电路、LED显示灯；升压输出电路中设有由电阻R23、R27并联组成的取样电路，由电阻R5、R14串联组成的检测电路，所述主控MCU的Test引脚与所述电阻R5、R14的串接点相连接；升压输出电路的输出电源5V+通过二极管D1与电池正极B+单向导通，主控MCU的正负级在关机时与电池负极接通。 Referring to Fig. 1 and Fig. 2: Design a mobile power load automatic identification circuit, which is equipped with a main control MCU, a battery protection board circuit connected to the main control MCU, a power supply circuit, a charging control circuit, a boost output circuit, LED display lamp; the boost output circuit is provided with a sampling circuit composed of resistors R23 and R27 connected in parallel, and a detection circuit composed of resistors R5 and R14 connected in series, and the Test pin of the main control MCU is connected to the resistor R5 and R14. The series connection points are connected; the output power 5V+ of the boost output circuit is unidirectionally conducted with the positive pole B+ of the battery through the diode D1, and the positive and negative poles of the main control MCU are connected to the negative pole of the battery when the power is turned off.
5V+是任何情况下都是直接跟电池正极B+单向导通的，IC的正负级在关机时直接与电池负极接通，当有负载插入USB时5V+的电压通过负载正极到负极对5V-产生一个电压,即在Test上在生产一个上升沿的脉冲，对MCU现实一个外部中断后其开始唤醒并正常工作。负载电源将在R23、R27的采样电阻上产生一个压降，MCU通过Test引脚检测当时负载电流的大小。首次插入负载时，如果检测到负载电流小于200mA时，输出将会一直开启，仅在手动按键或延时六个小时（有误差范围）后自动关机；如果首次检测到负载电流大于200mA，MCU将不断采样Test上的电压值，此时负载电流减小到50mA（有误差范围）时，移动电源将会自动关闭输出进入休眠状态。 5V+ is directly connected to the positive pole of the battery B+ in any case. The positive and negative poles of the IC are directly connected to the negative pole of the battery when it is turned off. When a load is inserted into the USB, the voltage of 5V+ passes through the positive pole of the load to the negative pole to 5V-. A voltage, that is, a rising edge pulse is produced on the Test, and after an external interrupt is shown to the MCU, it starts to wake up and work normally. The load power supply will generate a voltage drop on the sampling resistors of R23 and R27, and the MCU will detect the current load current through the Test pin. When the load is inserted for the first time, if the load current is detected to be less than 200mA, the output will always be on, and it will be automatically turned off only after a manual key or a delay of six hours (with an error range); if the load current is detected to be greater than 200mA for the first time, the MCU will Continuously sample the voltage value on Test, when the load current decreases to 50mA (with error range), the mobile power supply will automatically turn off the output and enter the sleep state.
通常情况下，移动电源有小负载电流自动关机和一直不自动机关两种，随着科技的发展，穿戴设备越来越普及，前者不能给蓝牙耳机，智能手环等充电电流在50mA左右的设备充电；后者则一直开启，如果不人为干预，一直开启输出，使得移动电源本身和被充电设备一直处于充电工作状态，降低产品使用寿命，同时浪费能源！本发明可用于日常生活中，避免随身携带着移动电源但无法给蓝牙耳机、智能手环充电的尴尬，也可避免移动电源一直插着负载而不自动关机带来的隐患。 Under normal circumstances, mobile power supply has two types: automatic shutdown with small load current and non-automatic shutdown all the time. With the development of technology, wearable devices are becoming more and more popular. The former cannot charge Bluetooth headsets, smart bracelets and other devices with a charging current of about 50mA. Charging; the latter is always on. If there is no human intervention, the output is always on, so that the mobile power itself and the charged device are always in a charging state, reducing the service life of the product and wasting energy! The invention can be used in daily life to avoid the embarrassment of carrying a mobile power supply but being unable to charge the Bluetooth earphones and smart bracelets, and can also avoid the hidden dangers caused by the mobile power supply being plugged in all the time without automatically shutting down.
Claims (1)
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
ID=53093713
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578264B (en) |
Cited By (8)
| 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 | Intelligent charging circuit and mobile power supply using the intelligent charging 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 |
| CN114243843A (en) * | 2021-12-21 | 2022-03-25 | 凯睿隆誉(成都)科技有限公司 | Current control circuit and method of electric device and electric device |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337557B1 (en) * | 1999-01-25 | 2002-01-08 | Barry K. Kates | External universal battery charging apparatus and method |
| CN201263092Y (en) * | 2008-09-28 | 2009-06-24 | 徐建华 | Mobile power supply |
| CN203707841U (en) * | 2014-01-23 | 2014-07-09 | 厦门广开电子有限公司 | Circuit structure of mobile power supply |
| US20140354050A1 (en) * | 2013-05-31 | 2014-12-04 | Richtek Technology Corporation | Power bank and control method for supplying power |
| CN204012830U (en) * | 2014-07-22 | 2014-12-10 | 厦门广开电子有限公司 | Portable power source |
| CN204597499U (en) * | 2014-12-24 | 2015-08-26 | 东莞市兴开泰电子科技有限公司 | Portable power source automatic recognition of load circuit |
-
2014
- 2014-12-24 CN CN201410810069.0A patent/CN104578264B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337557B1 (en) * | 1999-01-25 | 2002-01-08 | Barry K. Kates | External universal battery charging apparatus and method |
| CN201263092Y (en) * | 2008-09-28 | 2009-06-24 | 徐建华 | Mobile power supply |
| US20140354050A1 (en) * | 2013-05-31 | 2014-12-04 | Richtek Technology Corporation | Power bank and control method for supplying power |
| CN203707841U (en) * | 2014-01-23 | 2014-07-09 | 厦门广开电子有限公司 | Circuit structure of mobile power supply |
| CN204012830U (en) * | 2014-07-22 | 2014-12-10 | 厦门广开电子有限公司 | Portable power source |
| CN204597499U (en) * | 2014-12-24 | 2015-08-26 | 东莞市兴开泰电子科技有限公司 | Portable power source automatic recognition of load circuit |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104953666B (en) * | 2015-06-30 | 2018-10-23 | 黄伟聪 | A kind of method for controlling power supply based on mobile power |
| US10433369B2 (en) | 2015-06-30 | 2019-10-01 | Guangdong Flexwarm Advanced Materials & Technology Co., Ltd. | Power supply control method based on mobile power sources |
| CN106124842B (en) * | 2016-07-04 | 2019-05-28 | 芯海科技（深圳）股份有限公司 | Small current detection circuit and method for 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 | Intelligent charging circuit and mobile power supply using the intelligent charging 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 |
| CN114243843A (en) * | 2021-12-21 | 2022-03-25 | 凯睿隆誉(成都)科技有限公司 | Current control circuit and method of electric device and electric device |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104578264B (en) | Mobile power automatic recognition of load circuit | |
| CN203933124U (en) | A kind of single interface portable power source, bluetooth keyboard and protective sleeve | |
| CN203933073U (en) | A kind of new automobile charger | |
| CN201113496Y (en) | A charge management circuit | |
| EP2383861A3 (en) | Battery charger for portable electronic equipment | |
| CN205610259U (en) | Cell -phone charger with automatic timer function of cutting off power supply | |
| WO2012075769A1 (en) | Mobile power supply and control method thereof | |
| CN103457314B (en) | A kind of switching mode single lithium battery charging and step-up discharge control chip | |
| CN206441113U (en) | A kind of direct on/off circuit of direct current supply computer | |
| CN105627234A (en) | Multifunctional intelligent LED table lamp | |
| CN205544520U (en) | Automatic energy -conserving charging circuit of pressure regulating | |
| CN106849246A (en) | Charging inlet short-circuit detecting device, mobile terminal and method for detecting short circuit | |
| CN204597499U (en) | Portable power source automatic recognition of load circuit | |
| WO2016074388A1 (en) | Charging method and apparatus | |
| CN104159359A (en) | Electric torch drive circuit and mobile terminal | |
| CN102636709B (en) | Circuit capable of fast recognizing types of chargers and recognizing method for circuit | |
| CN204759079U (en) | Novel have out an electron cigarette controller that short circuit detected function | |
| CN207301968U (en) | A kind of single-button switching on and shutting down charging control circuit | |
| CN204350365U (en) | The LED emergency light device of tape test switch | |
| CN206630058U (en) | A kind of multifunctional solar cap | |
| CN204179721U (en) | A kind of hearing aid circuit | |
| CN204947617U (en) | A kind of charger without polarity | |
| CN202818730U (en) | multifunctional work light | |
| CN104882915B (en) | Lithium battery charging circuit and lamps | |
| CN206237177U (en) | A kind of power supply adaptor of charging control circuit and safety |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |