CN203301196U - Mobile power supply with load detection circuit - Google Patents
Mobile power supply with load detection circuit Download PDFInfo
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- CN203301196U CN203301196U CN2013203283408U CN201320328340U CN203301196U CN 203301196 U CN203301196 U CN 203301196U CN 2013203283408 U CN2013203283408 U CN 2013203283408U CN 201320328340 U CN201320328340 U CN 201320328340U CN 203301196 U CN203301196 U CN 203301196U
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Abstract
The utility model discloses a mobile power supply with a load detection circuit. The mobile power supply comprises a discharging circuit, a load connection circuit and a central control circuit. The mobile power supply also comprises the load detection circuit which comprises a detection resistor, wherein the load detection end of the detection resistor is respectively connected with the load connection circuit and the central control circuit, the other end of the detection resistor is grounded. The load detection circuit is used for detecting the load connection state of the load connection circuit, and a level signal of the load detection end is output to the central control circuit so as to control the discharging circuit discharges a load. According to the utility model, the detection resistor is used to realize automatic load detection, and the mobile power supply with the load detection circuit has the advantages of strong compatibility, simple circuits and lower cost.
Description
Technical field
The utility model relates to a kind of power supply product, more particularly, relates to a kind of portable power source with load detecting circuit.
Background technology
Portable power source in the market has two kinds, a kind of be portable power source after load is plugged, need to manually push button, could charge to load, increased like this triviality of operation; Another kind is the portable power source with automatic detection loading functional.As shown in Figure 1, be the circuit structure diagram that prior art has the portable power source of automatic detection load circuit.Its cardinal principle is to have utilized the on-off action of triode to realize: when not having load to plug, triode Q ends, single-chip microcomputer draws on inside, at load detecting end (end that resistance R 2 is connected with single-chip microcomputer), high level can be detected, it is upper that single-chip microcomputer can judge that load does not connect, and then the controlled discharge circuit is not given load discharge; And work as load, plug, the positive output end Vout+ of portable power source has little electric current to flow through load, from load, flow back to negative output terminal Vout-again, through resistance R 1(1K), from the base stage of triode Q, flow to ground again, make the triode conducting, due to the single-chip microcomputer internal pull-up resistor much larger than resistance R 2(1K) resistance, thereby single-chip microcomputer can be checked through low level at load detecting end (end that resistance R 2 is connected with single-chip microcomputer), in case the low level of detecting, it is upper that single-chip microcomputer can judge that load connects, and then the controlled discharge circuit is to load discharge.
Because triode is the current mode device, electric current arrives a value just can make the triode conducting, and because load type is a lot, difference is also very large, causes triode conducting fully, thereby occurs that some load can not be identified, compatible bad.And the circuit elements device is many, and cost is high.Therefore the portable power source load detecting circuit of prior art can not detect all loads, and compatibility is not strong, and the circuit more complicated, has increased the cost of product.
The utility model content
The technical problems to be solved in the utility model is, and is not strong for the above-mentioned compatibility of prior art, and the circuit more complicated, increased the defect of the cost of product, and a kind of portable power source with load detecting circuit is provided.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of portable power source with load detecting circuit, comprise discharge circuit, load connecting circuit, central control circuit, described discharge circuit is electrically connected to described load connecting circuit and central control circuit respectively, also comprise load detecting circuit, described load detecting circuit comprises at least one detection resistance
The load detecting end of described detection resistance is connected to respectively described load connecting circuit and central control circuit, the other end ground connection of described detection resistance;
Described load detecting circuit is for detection of the load access state of described load connecting circuit, and the level signal of output loading test side is to described central control circuit and then control described discharge circuit described load is discharged.
In the portable power source with load detecting circuit described in the utility model, the resistance of described detection resistance is 0.5～5M.
In the portable power source with load detecting circuit described in the utility model, described central control circuit comprises a single-chip microcomputer, and described single-chip microcomputer is electrically connected to described load detecting end, and the model of described single-chip microcomputer is BJ8P162.
In the portable power source with load detecting circuit described in the utility model, described load connecting circuit comprises a connector, described connector is for connecting load, and the output of described connector comprises positive output end and negative output terminal, and described negative output terminal is electrically connected to described load detecting end.
In the portable power source with load detecting circuit described in the utility model, described discharge circuit comprises boost output circuit and 5V output circuit;
Described boost output circuit and the electrical connection of 5V output circuit, the output of described 5V output circuit is connected to the input of described connector, and the described output circuit that boosts is electrically connected to described central control circuit;
The described output circuit that boosts is for voltage processings of boosting to output, and described 5V output circuit is used for the 5V voltage of outputting standard.
In the portable power source with load detecting circuit described in the utility model, described discharge circuit also comprises battery, and described battery is electrically connected to described central control circuit and the described output circuit that boosts.
In the portable power source with load detecting circuit described in the utility model, described discharge circuit also comprises battery protecting circuit, and described battery and the described output circuit that boosts are electrically connected to by described battery protecting circuit.
In the portable power source with load detecting circuit described in the utility model, also comprise charging circuit, described charging circuit comprises charging control circuit, adapter input circuit, USB input circuit;
Described adapter input circuit and USB input circuit are electrically connected to respectively described charging control circuit, and described charging control circuit is electrically connected to respectively described central control circuit and described battery;
Described adapter input circuit is for connecting the input power with adaptor interface, and described USB input circuit is for connecting the input power with USB interface; Described charging control circuit charges to described battery for controlling described input power.
In the portable power source with load detecting circuit described in the utility model, described battery is lithium battery.
In the portable power source with load detecting circuit described in the utility model, also comprise the battery capacity indication circuit, described battery capacity indication circuit is electrically connected to described central control circuit, and described battery capacity indication circuit is for exporting the dump energy information of described battery.
Implement the portable power source with load detecting circuit of the present utility model, have following beneficial effect: by a detection resistance, realize the function that load detects automatically, have compatibility strong, circuit is simple, the advantage of reduction product cost.
The accompanying drawing explanation
The utility model is described in further detail below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the electrical block diagram that prior art has the portable power source of automatic detection load circuit;
Fig. 2 is the electrical block diagram of preferred embodiment that the utlity model has the portable power source of load detecting circuit.
Embodiment
For technical characterictic of the present utility model, purpose and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Fig. 2 is the electrical block diagram of preferred embodiment that the utlity model has the portable power source of load detecting circuit 300.
In preferred embodiment, comprise discharge circuit 200, charging circuit 500, load connecting circuit 400, load detecting circuit 300, battery capacity indication circuit 600, central control circuit 100.
Wherein, discharge circuit 200 comprise battery 210, battery protecting circuit 240, the output circuit 220 that boosts, 5V output circuit 230; Charging circuit 500 comprises charging control circuit 510, adapter input circuit 520, USB input circuit 530.
The output circuit 220 that boosts is electrically connected to 5V output circuit 230, battery protecting circuit 240, central control circuit 100 respectively, and the output circuit 220 that boosts is for the voltage processing of boosting to output.
Battery capacity indication circuit 600 is electrically connected to central control circuit 100, for exporting the information about power of battery 210, displaying contents is the dump energy of battery 210, display mode can show for LED lamp or LCD screen display, and display packing can be that the numeral demonstration of dump energy percentage or column, fan-shaped figure show.In the present embodiment, preferred LCD screen display shows that the column figure of dump energy shows.
Concrete, battery 210 is lithium batteries.
When not having load to plug, draw on not single-chip microcomputer inside, detects the pull down resistor that resistance R is equivalent to single-chip microcomputer, and the level signal of the load detecting end that single-chip microcomputer detects at this moment is low level, it is upper that single-chip microcomputer can judge that load does not connect, and then controlled discharge circuit 200 is not given load discharge.and when load is plugged, due to this moment single-chip microcomputer load do not detected, so the output circuit 220 that boosts in Single-chip Controlling discharge circuit 200 is not worked, load is plugged and is made circuit connect, so battery 210 is without boosting, directly give load discharge, give this moment the cell voltage of load voltage supply lower, so can at the positive output end Vout+(of connector J, be the positive output end of portable power source) (this is the known technology of this area to have little electric current to flow through load, repeat no more) herein, from the negative output terminal Vout-(of load flow tieback plug-in unit J, be the negative output terminal of portable power source again), through detecting resistance R, flow to ground simultaneously, because compare with the single-chip microcomputer internal pull-up resistor, the resistance of detection resistance R is large (1M) very, produce voltage at the load detecting end that detects resistance R this moment, and the earth terminal that detects resistance R is 0, the level signal that detects the load detecting end of resistance R is high level (high level is 1), therefore single-chip microcomputer detects load and plugs, then Single-chip Controlling discharge circuit 200 is given load discharge, concrete, the control output voltage of 220 pairs of batteries 210 of the output circuit processing of boosting of boosting, finally reach the operating voltage of load, driving load normal operation.
The above is described embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (10)
1. portable power source with load detecting circuit, comprise discharge circuit, load connecting circuit, central control circuit, described discharge circuit is electrically connected to described load connecting circuit and central control circuit respectively, it is characterized in that, also comprise load detecting circuit, described load detecting circuit comprises at least one detection resistance
The load detecting end of described detection resistance is connected to respectively described load connecting circuit and central control circuit, the other end ground connection of described detection resistance;
Described load detecting circuit is for detection of the load access state of described load connecting circuit, and the level signal of exporting described load detecting end is to described central control circuit and then control described discharge circuit described load is discharged.
2. the portable power source with load detecting circuit according to claim 1, is characterized in that, the resistance of described detection resistance is 0.5～5M.
3. the portable power source with load detecting circuit according to claim 2, is characterized in that, described central control circuit comprises a single-chip microcomputer, and described single-chip microcomputer is electrically connected to described load detecting end, and the model of described single-chip microcomputer is BJ8P162.
4. the portable power source with load detecting circuit according to claim 3, it is characterized in that, described load connecting circuit comprises a connector, described connector is for connecting load, the output of described connector comprises positive output end and negative output terminal, and described negative output terminal is electrically connected to described load detecting end.
5. the portable power source with load detecting circuit according to claim 4, is characterized in that, described discharge circuit comprises boost output circuit and 5V output circuit;
Described boost output circuit and the electrical connection of 5V output circuit, the output of described 5V output circuit is connected to the input of described connector, and the described output circuit that boosts is electrically connected to described central control circuit;
The described output circuit that boosts is for voltage processings of boosting to output, and described 5V output circuit is used for the 5V voltage of outputting standard.
6. the portable power source with load detecting circuit according to claim 5, is characterized in that, described discharge circuit also comprises battery, and described battery is electrically connected to described central control circuit and the described output circuit that boosts.
7. the portable power source with load detecting circuit according to claim 6, is characterized in that, described discharge circuit also comprises battery protecting circuit, and described battery and the described output circuit that boosts are electrically connected to by described battery protecting circuit.
8. the portable power source with load detecting circuit according to claim 6, is characterized in that, also comprises charging circuit, and described charging circuit comprises charging control circuit, adapter input circuit, USB input circuit;
Described adapter input circuit and USB input circuit are electrically connected to respectively described charging control circuit, and described charging control circuit is electrically connected to respectively described central control circuit and described battery;
Described adapter input circuit is for connecting the input power with adaptor interface, and described USB input circuit is for connecting the input power with USB interface; Described charging control circuit charges to described battery for controlling described input power.
9. according to claim 6-8 arbitrary described portable power sources with load detecting circuit, is characterized in that, described battery is lithium battery.
10. the portable power source with load detecting circuit according to claim 9, it is characterized in that, also comprise the battery capacity indication circuit, described battery capacity indication circuit is electrically connected to described central control circuit, and described battery capacity indication circuit is for exporting the dump energy information of described battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203283408U CN203301196U (en) | 2013-06-07 | 2013-06-07 | Mobile power supply with load detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203283408U CN203301196U (en) | 2013-06-07 | 2013-06-07 | Mobile power supply with load detection circuit |
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| Publication Number | Publication Date |
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| CN203301196U true CN203301196U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203283408U Expired - Fee Related CN203301196U (en) | 2013-06-07 | 2013-06-07 | Mobile power supply with load detection circuit |
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| CN (1) | CN203301196U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545896A (en) * | 2013-11-07 | 2014-01-29 | 成都芯源***有限公司 | Bidirectional switch circuit, mobile power supply circuit and control method thereof |
| CN106053920A (en) * | 2016-07-20 | 2016-10-26 | 浙江大华技术股份有限公司 | Load loss detection circuit and power supply system |
| 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 |
| CN107831446A (en) * | 2017-10-30 | 2018-03-23 | 上海德朗能电子科技有限公司 | Load battery charging detection device |
| WO2018191853A1 (en) * | 2017-04-17 | 2018-10-25 | 深圳和而泰智能控制股份有限公司 | Monitoring control method and system for load capability of battery |
| CN109167420A (en) * | 2018-10-31 | 2019-01-08 | 维沃移动通信有限公司 | A kind of charging control circuit, charging circuit and charge control method |
| CN109521371A (en) * | 2018-11-28 | 2019-03-26 | 赛尔富电子有限公司 | Detect the apparatus and method of driving power load condition |
| CN106053920B (en) * | 2016-07-20 | 2019-07-16 | 浙江大华技术股份有限公司 | A kind of load missing detecting circuit and power supply system |
-
2013
- 2013-06-07 CN CN2013203283408U patent/CN203301196U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545896A (en) * | 2013-11-07 | 2014-01-29 | 成都芯源***有限公司 | Bidirectional switch circuit, mobile power supply circuit and control method thereof |
| CN103545896B (en) * | 2013-11-07 | 2015-09-30 | 成都芯源***有限公司 | Bidirectional switch circuit, mobile power supply circuit and control method thereof |
| 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 |
| 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 |
| CN106053920A (en) * | 2016-07-20 | 2016-10-26 | 浙江大华技术股份有限公司 | Load loss detection circuit and power supply system |
| CN106053920B (en) * | 2016-07-20 | 2019-07-16 | 浙江大华技术股份有限公司 | A kind of load missing detecting circuit and power supply system |
| WO2018191853A1 (en) * | 2017-04-17 | 2018-10-25 | 深圳和而泰智能控制股份有限公司 | Monitoring control method and system for load capability of battery |
| CN107831446A (en) * | 2017-10-30 | 2018-03-23 | 上海德朗能电子科技有限公司 | Load battery charging detection device |
| CN109167420A (en) * | 2018-10-31 | 2019-01-08 | 维沃移动通信有限公司 | A kind of charging control circuit, charging circuit and charge control method |
| US11742684B2 (en) | 2018-10-31 | 2023-08-29 | Vivo Mobile Communication Co., Ltd. | Charging control circuit, charging circuit and charging control method |
| CN109521371A (en) * | 2018-11-28 | 2019-03-26 | 赛尔富电子有限公司 | Detect the apparatus and method of driving power load condition |
| CN109521371B (en) * | 2018-11-28 | 2021-12-24 | 赛尔富电子有限公司 | Device and method for detecting load state of driving power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20190607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |