CN204597540U - Portable power source circuit - Google Patents
Portable power source circuit Download PDFInfo
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- CN204597540U CN204597540U CN201520249288.6U CN201520249288U CN204597540U CN 204597540 U CN204597540 U CN 204597540U CN 201520249288 U CN201520249288 U CN 201520249288U CN 204597540 U CN204597540 U CN 204597540U
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- power source
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- mcu
- portable power
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Abstract
The utility model discloses a kind of portable power source circuit, comprise charge-discharge control circuit, governor circuit and LED display circuit, described governor circuit comprises MCU and start button, it is characterized in that: described LED display circuit comprises some groups of LED modules, often organize LED module and all there are two pins, one of them pin often organizing LED module is all coupled to the same pin of described MCU, and another pin often organizing LED module is coupled to the different pins of described MCU respectively; Often organize LED module to form by two pieces of LED light-emitting diode inverse parallels.It is simple that the utility model has circuit structure, the feature that cost is low.
Description
Technical field
The utility model relates to a kind of portable power source, more particularly, and particularly a kind of portable power source circuit.
Background technology
More and more universal along with electronic equipment, the power consumption of electronic equipment is increasing, and the volume of electronic equipment is more and more less, causes the situation that electricity is not enough; Therefore, increasing electronic equipment needs a power supply for subsequent use to provide electricity to electronic equipment in time.At present, portable power source on the market, can not only meet the charging to electronic equipment, can also show the dump energy of self, and charging process also can be realized by running lamp.Portable power source is only provided with a start button usually, and this start button can be used for starting charge function and illumination functions, be generally long by after can open illumination functions, short in starting charge function.In order to realize the effect of running lamp, by needing the LED of about 4, and with current portable power source circuit on the market, these 4 LED are controlled by MCU separately, that is, need 4 pins taking MCU, meanwhile, above-mentioned start button also can take a pin of MCU, for cost consideration, the pin of the MCU in portable power source itself is not a lot, therefore, LED and the pin of button to MCU take too much, can cause the waste of MCU pin resource, also can strengthen the complexity of wiring simultaneously, increase cost.
Utility model content
The purpose of this utility model is to provide a kind of portable power source circuit, has circuit structure simple, the feature that cost is low.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of portable power source circuit, comprise charge-discharge control circuit, governor circuit and LED display circuit, described governor circuit comprises MCU and start button, described LED display circuit comprises some groups of LED modules, often organize LED module and all there are two pins, one of them pin often organizing LED module is all coupled to the same pin of described MCU, and another pin often organizing LED module is coupled to the different pins of described MCU respectively; Often organize LED module to form by two pieces of LED light-emitting diode inverse parallels.
Further, the output of described start button is coupled to this same pin of described MCU.
Further, described portable power source circuit also comprises electric power detection and illumination multiplex circuit, described electric power detection and illumination multiplex circuit are coupled between the positive pole of the battery of portable power source and a pin of MCU, and MCU detects the electricity of battery by this electric power detection and illumination multiplex circuit and realizes illumination functions.
Further, described electric power detection and illumination multiplex circuit comprise, one first resistance; One second resistance, one end of described second resistance is coupled to the positive pole of battery by the first resistance, the other end of described second resistance is coupled to a pin of MCU; One LED light-emitting diode, its anode is coupled between the first resistance and the second resistance, and negative electrode is coupled to this other end of the second resistance.
Further, described charge-discharge control circuit comprises, charging control circuit, for controlling external power source to the battery charging in portable power source; Charge/discharge control circuit, discharges to electronic equipment for the battery controlled in portable power source; Charging and discharging currents testing circuit, is coupled to described charging control circuit and charge/discharge control circuit, to detect charging and discharging currents during above-mentioned charge and discharge; And One Buck-Boost converter body, the pwm signal that described One Buck-Boost converter body sends in response to MCU, with electric current and the voltage control of assisting this charging control circuit and charge/discharge control circuit to realize charging and discharging; Wherein, described MCU exports corresponding pwm signal in response to the size of described charging and discharging currents.
Further, described charging control circuit comprises, MicroUSB interface, for being connected with external power source; Voltage stabilizing circuit, is coupled to described MicroUSB interface, the surge impact produced when plugging for suppressing external power source; Overvoltage crowbar, is coupled to described voltage stabilizing circuit, and the charging for the charge closing control circuit when the input voltage of external power source is too high inputs.
Further, described overvoltage crowbar comprises, input voltage detection circuit, is coupled to described voltage stabilizing circuit, for detecting the input voltage of external power source, and detected value is transferred to described MCU; Switching circuit, inputs with the charging of charge closing control circuit in response to a shutoff signal; Wherein, when this detected value is higher than preset value, MCU exports this shutoff signal.
Further, described charge/discharge control circuit comprises, and the first USB interface, is coupled to One Buck-Boost converter body, for being connected with electronic equipment; Secondary USB interface, is coupled to One Buck-Boost converter body, for being connected with electronic equipment; Low-voltage protection circuit, is coupled to the first USB port and the second USB port, discharges to close charge/discharge control circuit in response to a shutoff signal to electronic equipment; Wherein, MCU by coupling with the battery of portable power source the electricity detecting this battery, and exports this shutoff signal when the electricity of battery is too low.
Further, described charge/discharge control circuit also comprises USB and fills adaptive circuit soon, described USB fills adaptive circuit soon and is coupled between One Buck-Boost converter body and first, second USB interface, to realize automatically identifying the type of electronic equipment and to carry out quick charge to it.
Further, described portable power source circuit also comprises lithium battery protection circuit.
Compared with prior art, the utility model has the advantages that: by the inverse parallel of two LED light-emitting diodes is formed a LED module, two common ports of these two LED light-emitting diodes constitute two pins of this state ED module.In addition, one of them pin of multiple above-mentioned LED module is coupled to the same pin of MCU, and another pin of multiple above-mentioned LED module is coupled to respectively the different pins of MCU, so, MCU namely by the light on and off of n pin control n+1 LED light-emitting diode, thus decreases the pin occupancy of LED light-emitting diode to MCU.In addition, more same pin start button and above-mentioned multiple LED module being taken MCU couples, and so, namely start button comes to send enabling signal to MCU by this same pin, to realize illumination and charge function.In addition, the utility model is also provided with this electric power detection and illumination multiplex circuit, can not only realize the electric power detection of MCU to battery, can also realize MCU and control these LED light-emitting diode light on and off to realize illumination functions, this electric power detection and illumination multiplex circuit only occupy a pin of MCU.Realized the mode of electric power detection and Lighting control respectively by two pins compared to MCU in prior art, the electric power detection that the utility model is arranged and illumination multiplex circuit reduce the pin occupancy of MCU.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of LED display circuit and start button in the utility model embodiment;
Fig. 2 is the circuit diagram of MCU in the utility model embodiment;
Fig. 3 is the circuit diagram of electric power detection and illumination multiplex circuit in the utility model embodiment;
Fig. 4 is the circuit diagram of charging control circuit in the utility model embodiment;
Fig. 5 is the circuit diagram of charge/discharge control circuit in the utility model embodiment;
Fig. 6 is the circuit diagram of One Buck-Boost converter body in the utility model embodiment;
Fig. 7 is the circuit diagram of lithium battery protection circuit in the utility model embodiment.
Reference numeral: 100, LED display circuit, 200, MCU, 300, electric power detection and illumination multiplex circuit; 400, charging control circuit; 410, voltage stabilizing circuit, 420, overvoltage crowbar, 421, input voltage detection circuit; 422, switching circuit; 500, charge/discharge control circuit, 510, low-voltage protection circuit, 520, USB fills adaptive circuit soon; 600, Buck-Boost, 700, lithium battery protection circuit.
Embodiment
A kind of portable power source circuit, comprise charge-discharge control circuit, governor circuit and LED display circuit, governor circuit comprises MCU and start button, with reference to Fig. 1, LED display circuit comprises 2 groups of LED modules, often organize LED module and all have two pins, one of them pin often organizing LED module is all coupled to the same pin of MCU, and another pin often organizing LED module is coupled to the different pins of MCU respectively; Often organize LED module to form by two pieces of LED light-emitting diode inverse parallels.Therefore, by the inverse parallel of two LED light-emitting diodes is formed a LED module, two common ports of these two LED light-emitting diodes constitute two pins of this state ED module.In addition, one of them pin of multiple above-mentioned LED module is coupled to the same pin of MCU, and another pin of multiple above-mentioned LED module is coupled to respectively 3 different pins of MCU, P1.1, P1.2 and P1.4, so, MCU can control the light on and off of 4 LED light-emitting diodes by means of only the level height changing P1.1, P1.2 and P1.4 pin, thus decreases the pin occupancy of LED light-emitting diode to MCU.Concrete control mode is, when electricity is 100%, first P1.1 and P1.2 is set low level, P1.4 sets high level, now LED2 and LED4 is luminous, again P1.1 and P1.2 is switched to high level, P1.4 switches to low level, and now LED1 and LED3 is bright, due to switch speed very fast, the ingenious characteristic that make use of human visual and persist, when making to visually observe, is that LED1 ~ LED4 is simultaneously bright, identical, when the electricity of battery is respectively 75%, 50% and 25%, also adopts identical I/O mouth scan mode, be effective.In addition, with reference to Fig. 3, the output LP of key-press module is coupled to this same pin P1.4 of MCU.So, namely start button S1 comes to send enabling signal to MCU by this same pin P1.4, to realize illumination and charge function, saves pin equally and takies.
In addition, portable power source circuit also comprises electric power detection and illumination multiplex circuit, electric power detection and illumination multiplex circuit are coupled between the positive pole of the battery of portable power source and a pin P3.0 of MCU, and MCU detects the electricity of battery by this electric power detection and illumination multiplex circuit and realizes illumination functions.Concrete, electric power detection and illumination multiplex circuit comprise resistance R4 ~ R5 and LED5, and wherein, one end of resistance R5 is coupled to the positive pole of battery by resistance R4, and the other end of resistance R5 is coupled to a pin P3.0 of MCU; The anode of LED5 is coupled between resistance R4 and resistance R5, and negative electrode is coupled to this other end of resistance R5.Therefore, MCU is by changing the light on and off of the level value control LED5 on pin P3.0, and the output voltage of such as battery is 3.7V, when the current potential of P3.0 is 3.0V, electric current only enters into MCU by resistance R4, R5, and now LED5 does not work, when the current potential of P3.0 is 0V, electric current enters into MCU by resistance R4, LED5, now LED5 is bright, therefore, and no matter which kind of current potential, MCU can realize the electric power detection to battery, only unlike the light on and off of control LED5.
In the present embodiment, charge-discharge control circuit comprises, charging control circuit, for controlling external power source to the battery charging in portable power source; Charge/discharge control circuit, discharges to electronic equipment for the battery controlled in portable power source; Charging and discharging currents testing circuit, is coupled to charging control circuit and charge/discharge control circuit, to detect charging and discharging currents during above-mentioned charge and discharge; And One Buck-Boost converter body, the pwm signal that One Buck-Boost converter body sends in response to MCU, with electric current and the voltage control of assisting this charging control circuit and charge/discharge control circuit to realize charging and discharging; Wherein, MCU exports corresponding pwm signal in response to the size of charging and discharging currents.
One Buck-Boost converter body is known a kind of integrated circuit, and its physical circuit figure is see Fig. 6, and the present embodiment repeats no more its principle.
See Fig. 4, charging control circuit comprises, MicroUSB interface, for being connected with external power source; Voltage stabilizing circuit, is coupled to MicroUSB interface, the surge impact produced when plugging for suppressing external power source; Overvoltage crowbar, is coupled to voltage stabilizing circuit, and the charging for the charge closing control circuit when the input voltage of external power source is too high inputs.Wherein, voltage stabilizing circuit comprises electric capacity C1 and inductance L 1, and electric capacity C1 is in parallel with two power supply input pins (VCC and GND) of MicroUSB interface, and inductance L 1 couples with the VCC pin of MicroUSB interface.
See Fig. 4, overvoltage crowbar comprises, and input voltage detection circuit is coupled to voltage stabilizing circuit, for detecting the input voltage of external power source, and detected value is transferred to MCU; Switching circuit, inputs with the charging of charge closing control circuit in response to a shutoff signal; Wherein, when this detected value is higher than preset value, MCU exports this shutoff signal.Wherein, voltage detecting circuit comprises the bleeder circuit be made up of resistance R6 and resistance R7, and electric capacity C2 one end is coupled between this resistance R6 and resistance R7, other end ground connection, therefore, produces detected value CH_VFB from electric capacity C2.Switching circuit comprises NMOS tube Q2, PMOS Q1, resistance R8 and resistance R9, the source electrode of PMOS Q1 is coupled to the grounding leg (i.e. crown cap) of MicroUSB, grid is coupled to the pin P3.3 of MCU by resistance R8, the source electrode of NMOS tube Q2 is coupled to inductance L 1, grid is coupled to the drain electrode of PMOS Q1, resistance R9 is coupled between the drain electrode of PMOS Q1 and the drain electrode of NMOS tube Q2, and the drain electrode of NMOS tube is as the output of charging control circuit.
See Fig. 5, charge/discharge control circuit comprises, and the first USB interface J1, is coupled to One Buck-Boost converter body, for being connected with electronic equipment; Secondary USB interface J2, is coupled to One Buck-Boost converter body, for being connected with electronic equipment; Low-voltage protection circuit, is coupled to the first USB port J1 and the second USB port J2, and low-voltage protection circuit discharges to electronic equipment to close charge/discharge control circuit in response to a shutoff signal; Wherein, MCU by coupling with the battery of portable power source the electricity detecting this battery, and exports this shutoff signal when the electricity of battery is too low.Concrete, low-voltage protection circuit comprises,
See Fig. 5, charge/discharge control circuit also comprises USB and fills adaptive circuit soon, and USB fills adaptive circuit soon and is coupled between One Buck-Boost converter body and first, second USB interface, to realize automatically identifying the type of electronic equipment and to carry out quick charge to it.USB fills adaptive circuit soon and is integrated with GL888 chip as control chip, needs by the problem that could charge of decoding when solving the charging of apple three magnitude individual plants.
See Fig. 7, portable power source circuit also comprises lithium battery protection circuit, and this battery protecting circuit is integrated with VA7021 as main control chip, effectively can prevent the situation that battery even explodes because of the fault Dao such as short circuit, overcurrent Zhi Rice-dumplings.
Claims (10)
1. a portable power source circuit, comprise charge-discharge control circuit, governor circuit and LED display circuit, described governor circuit comprises MCU and start button, it is characterized in that: described LED display circuit comprises some groups of LED modules, often organize LED module and all there are two pins, one of them pin often organizing LED module is all coupled to the same pin of described MCU, and another pin often organizing LED module is coupled to the different pins of described MCU respectively; Often organize LED module to form by two pieces of LED light-emitting diode inverse parallels.
2. portable power source circuit according to claim 1, is characterized in that: the output of described start button is coupled to this same pin of described MCU.
3. portable power source circuit according to claim 1, it is characterized in that: described portable power source circuit also comprises electric power detection and illumination multiplex circuit, described electric power detection and illumination multiplex circuit are coupled between the positive pole of the battery of portable power source and a pin of MCU, and MCU detects the electricity of battery by this electric power detection and illumination multiplex circuit and realizes illumination functions.
4. portable power source circuit according to claim 3, is characterized in that: described electric power detection and illumination multiplex circuit comprise,
One first resistance;
One second resistance, one end of described second resistance is coupled to the positive pole of battery by the first resistance, the other end of described second resistance is coupled to a pin of MCU;
One LED light-emitting diode, its anode is coupled between the first resistance and the second resistance, and negative electrode is coupled to this other end of the second resistance.
5. portable power source circuit according to claim 1, is characterized in that: described charge-discharge control circuit comprises,
Charging control circuit, for controlling external power source to the battery charging in portable power source;
Charge/discharge control circuit, discharges to electronic equipment for the battery controlled in portable power source;
Charging and discharging currents testing circuit, is coupled to described charging control circuit and charge/discharge control circuit, to detect charging and discharging currents during above-mentioned charge and discharge;
And One Buck-Boost converter body, the pwm signal that described One Buck-Boost converter body sends in response to MCU, with electric current and the voltage control of assisting this charging control circuit and charge/discharge control circuit to realize charging and discharging;
Wherein, described MCU exports corresponding pwm signal in response to the size of described charging and discharging currents.
6. portable power source circuit according to claim 5, is characterized in that: described charging control circuit comprises,
MicroUSB interface, for being connected with external power source;
Voltage stabilizing circuit, is coupled to described MicroUSB interface, the surge impact produced when plugging for suppressing external power source;
Overvoltage crowbar, is coupled to described voltage stabilizing circuit, and the charging for the charge closing control circuit when the input voltage of external power source is too high inputs.
7. portable power source circuit according to claim 6, is characterized in that: described overvoltage crowbar comprises,
Input voltage detection circuit, is coupled to described voltage stabilizing circuit, for detecting the input voltage of external power source, and detected value is transferred to described MCU;
Switching circuit, inputs with the charging of charge closing control circuit in response to a shutoff signal;
Wherein, when this detected value is higher than preset value, MCU exports this shutoff signal.
8. portable power source circuit according to claim 5, is characterized in that: described charge/discharge control circuit comprises,
First USB interface, is coupled to One Buck-Boost converter body, for being connected with electronic equipment;
Secondary USB interface, is coupled to One Buck-Boost converter body, for being connected with electronic equipment;
Low-voltage protection circuit, is coupled to the first USB port and the second USB port, discharges to close charge/discharge control circuit in response to a shutoff signal to electronic equipment;
Wherein, MCU by coupling with the battery of portable power source the electricity detecting this battery, and exports this shutoff signal when the electricity of battery is too low.
9. portable power source circuit according to claim 8, it is characterized in that: described charge/discharge control circuit also comprises USB and fills adaptive circuit soon, described USB fills adaptive circuit soon and is coupled between One Buck-Boost converter body and first, second USB interface, to realize automatically identifying the type of electronic equipment and to carry out quick charge to it.
10. portable power source circuit according to claim 1, is characterized in that: described portable power source circuit also comprises lithium battery protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249288.6U CN204597540U (en) | 2015-04-23 | 2015-04-23 | Portable power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249288.6U CN204597540U (en) | 2015-04-23 | 2015-04-23 | Portable power source circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204597540U true CN204597540U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520249288.6U Expired - Fee Related CN204597540U (en) | 2015-04-23 | 2015-04-23 | Portable power source circuit |
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| CN (1) | CN204597540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686832A (en) * | 2017-02-24 | 2017-05-17 | 杰华特微电子（杭州）有限公司 | Diode control circuit and switching power circuit |
| CN113270916A (en) * | 2021-05-13 | 2021-08-17 | 阿理新能源科技(昆山)有限公司 | Lithium battery management control method |
-
2015
- 2015-04-23 CN CN201520249288.6U patent/CN204597540U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686832A (en) * | 2017-02-24 | 2017-05-17 | 杰华特微电子（杭州）有限公司 | Diode control circuit and switching power circuit |
| CN106686832B (en) * | 2017-02-24 | 2019-04-02 | 杰华特微电子（杭州）有限公司 | A kind of diode control circuit and switching power circuit |
| CN113270916A (en) * | 2021-05-13 | 2021-08-17 | 阿理新能源科技(昆山)有限公司 | Lithium battery management control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen all wisdom core technology Co., Ltd. Assignor: Zhang Zhou Contract record no.: 2015440020331 Denomination of utility model: Multifunctional mobile power supply and multifunctional mobile power supply circuit Granted publication date: 20150826 License type: Exclusive License Record date: 20151014 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160429 Address after: 518057, Guangdong, Nanshan District, Shenzhen hi tech, a long Park, new materials, Hong Kong, 8, 5 floor Patentee after: Shenzhen all wisdom core technology Co., Ltd. Address before: Futian District Shenzhen City, Guangdong province 518000 CaiTian Road No. 6001 Print-Rite garden 2 A16B Patentee before: Zhang Zhou |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20170423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |