CN203278319U - Drive circuit having charger and multi-purpose LED functions - Google Patents
Drive circuit having charger and multi-purpose LED functions Download PDFInfo
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- CN203278319U CN203278319U CN 201320261842 CN201320261842U CN203278319U CN 203278319 U CN203278319 U CN 203278319U CN 201320261842 CN201320261842 CN 201320261842 CN 201320261842 U CN201320261842 U CN 201320261842U CN 203278319 U CN203278319 U CN 203278319U
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Abstract
The utility model discloses a drive circuit having charger and multi-purpose LED functions comprising a charger drive circuit, a lithium ion charging circuit, and an LED drive circuit. In the charger drive circuit, a first chip IC1 can covert voltages at two ends of a lithium ion battery set E1 into 5-V/2-A stable voltages for outputting; and PAD or mobile phone charging is carried out by a USB interface. In the LED drive circuit, a third chip IC3 can covert the voltages at the two ends of a lithium ion battery set E1 into 12-V/700-mA constant currents so as to carry out discharging on a 8.4-W LED lamp; a pin1, a pin2, a pin 3, a pin 5, and a pin 7 of a fifth chip IC5 respectively carry out sampling on a point A, a point B, a point C, a point E and a point D; and a pin 6 outputs high and low levels to control the LED indication lamp. The provided drive circuit that is simple and practical cab be applied to an emergency light at home; and when the product with the drive circuit is installed at a vehicle or is carried by the user, the product can be used as a flashlight, can be used for sending a signal for help or can be used as a back-up source for a mobile phone or an IPAD.
Description
Technical field
The utility model belongs to electronic circuit field, relates to a kind of drive circuit with charging treasured and multipurpose LED function.
Background technology
Along with the development of lithium-ion electric pool technology, produced manyly take lithium ion as energy storage and the mini-plant of power supply, using at present has the LED flashlight lighting especially widely, and charging is precious.And present most emergency light or take lead-acid battery as main energy storage and power supply unit because the environmental pollution that lead-acid battery causes is more serious, therefore, will be the trend of development with lithium ion as the development and application of energy storage and power supply.SOS is international distress signal, and under burst accident, it is very useful using the SOS emergency, if therefore can integrated this function in the LED flashlight will increase the use function of equipment.Simultaneously, emergency light, LED torch, SOS etc. all can adopt LED to export, and when adopting the lithium ion power supply, their drive circuit and discharge circuit are basically identical, detect and control also basic identical, unique different be the work shape difference of LED.Therefore, in order to obtain multiple LED working method, need suitable increase single-chip microcomputer, and single-chip microcomputer is programmed, to adapt to needed function.Simultaneously, the circuit that charging is precious and the drive circuit of LED are similar, therefore, can integrate to them fully, form the product that function ratio is more powerful.
Summary of the invention
The purpose of this utility model is exactly for the unicity of existing lithium ion as powered products, and a kind of drive circuit with charging treasured and multipurpose LED function is provided.
The utility model comprises the precious drive circuit of charging, lithium ion charging circuit, LED drive circuit;
The precious drive circuit of described charging comprises the first switch S 1, the first chip IC 1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the second resistance R 8, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the first inductance L 1, the first diode D1, USB interface P1;
1 pin of the first chip IC 1 is connected with an end of the first capacitor C 1, the other end of the first capacitor C 1 is connected with 3 pin of the first chip IC 1, an end of the first inductance L 1, the negative pole of the first diode D1 simultaneously, and the other end of the first inductance L 1 is connected with an end of the second resistance R 2, an end of the second capacitor C 2, an end of the 4th resistance R 4, an end of the 3rd resistance R 3, the positive pole of the 3rd capacitor C 3,1 pin of USB interface P1 simultaneously; 5 pin of the first chip IC 1 are connected with the other end of the second resistance R 2, an end of the 5th resistance R 5, the other end of the second capacitor C 2 simultaneously; 8 pin of the first chip IC 1 are connected with an end of the 6th capacitor C 6; 4 pin of the first chip IC 1 are connected with the other end of the 6th capacitor C 6, the positive pole of the first diode D1, an end of the 5th resistance R 5, an end of the 6th resistance R 6, an end of the second resistance R 8, the negative pole of the 3rd capacitor C 3,4 pin and an end of 5 pin, the 7th resistance R 7, the end of the 4th capacitor C 4 of USB interface P1 simultaneously, simultaneously ground connection; 3 pin of USB interface P1 are connected with the other end of the 3rd resistance R 3, the other end of the 8th resistance R 8 simultaneously, and 2 pin of USB interface P1 are connected with the other end of the 4th resistance R 4, the other end of the 6th resistance R 6 simultaneously; 6 pin of the first chip IC 1 are connected with an end of the 5th capacitor C 5, and the other end of the 5th capacitor C 5 is connected with the other end of the 7th resistance R 7; 2 pin of the first chip IC 1 are connected with an end of the first resistance R 1, the other end of the 4th capacitor C 4, an end of the first switch S 1 simultaneously, and the other end of the first switch S 1 is connected with lithium ion battery group E1 positive pole; 7 pin of the first chip IC 1 are connected with the other end of the first resistance R 1.
Described lithium ion charging circuit comprises the second chip IC 2, external adapter interface P2, the 3rd diode D3, the 5th diode D5, the 7th diode D7, the 8th diode D8, the 7th capacitor C 7, the 11 capacitor C 11, the 12 capacitor C 12, the 13 capacitor C 13, the 9th resistance R 9, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 15 resistance R 15, the second inductance L 2, lithium ion battery group E1;
2 pin of the second chip IC 2 are connected with 1 pin of the second chip IC 2, an end of the second inductance L 2, the negative pole of the 7th diode D7 simultaneously, the other end of the second inductance L 2 is connected with the positive pole of the 13 capacitor C 13, an end of the 7th capacitor C 7, an end of the 9th resistance R 9, the positive pole of the 3rd diode D3 simultaneously, and the negative pole of the 3rd diode D3 is connected with the positive pole of lithium ion battery group E1; 3 pin of the second chip IC 2 are connected with the positive pole of the 7th diode D7, the negative pole of the 13 capacitor C 13, an end of the 11 resistance R 11, an end of the 12 resistance R 12, an end of the 13 resistance R 13,6 pin of the second chip IC 2, the negative pole of the 11 capacitor C 11, an end of the 12 capacitor C 12,1 pin of external adapter interface P2 simultaneously, and ground connection; 4 pin of the second chip IC 2 are connected with the other end of the 7th capacitor C 7, the other end of the 9th resistance R 9 simultaneously; 5 pin of the second chip IC 2 are connected with the other end, the other end of the 13 resistance R 13, the lithium ion battery group E1 negative pole of the 11 resistance R 11 simultaneously; 7 pin of the second chip IC 2 are connected with 8 pin of the second chip IC 2, the positive pole of the 11 capacitor C 11, the other end of the 12 capacitor C 12, the negative pole of the 5th diode D5, the positive pole of the 8th diode D8 simultaneously, the positive pole of the 5th diode D5 is connected with 2 pin of external adapter interface P2, the negative pole of the 8th diode D8 is connected with an end of the 15 resistance R 15, and the other end of the 15 resistance R 15 is connected with 3 pin of four-core sheet IC4.
Described LED drive circuit comprises discharge circuit and single-chip microcomputer management circuit;
Discharge circuit comprises second switch S2, the 3rd chip IC 3, the tenth resistance R 10, the 14 resistance R 14, the 4th diode D4, the 6th diode D6, the 9th diode D9, the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the first LED 1, the second LED 2, the 3rd inductance L 3; 1 pin of the 3rd chip IC 3 is connected with 5 pin of the 5th chip IC 5; 2 pin of the 3rd chip IC 3 are connected with an end of the 3rd inductance L 3, an end of the 8th capacitor C 8, an end of the 9th capacitor C 9, the end of second switch S2, the positive pole of the 9th diode D9 simultaneously, the other end of second switch S2 is connected with the positive pole of lithium ion battery group E1, the equal ground connection of negative pole of the other end of the other end of the 8th capacitor C 8, the 9th capacitor C 9, the negative pole of the 9th diode D9, lithium ion battery group E1; 3 pin of the 3rd chip IC 3 are connected with the positive pole of the 6th diode D6, an end of the tenth resistance R 10 simultaneously, the other end of the tenth resistance R 10 is connected with an end of the 14 resistance R 14, the negative pole of the second LED 2 simultaneously, the other end ground connection of the 14 resistance R 14; 4 pin of the 3rd chip IC 3 are unsettled; 5 pin of the 3rd chip IC 3 are connected with 6 pin of the 3rd chip IC 3, the other end of the 3rd inductance L 3, the positive pole of the 4th diode D4 simultaneously, the negative pole of the 4th diode D4 is connected with the negative pole of the 6th diode D6, the positive pole of the first LED 1, the positive pole of the tenth capacitor C 10 simultaneously, the negative pole of the first LED 1 is connected with the positive pole of the second LED 2, the minus earth of the tenth capacitor C 10.
the single-chip microcomputer management circuit comprises four-core sheet IC4, the 5th chip IC 5, the 14 capacitor C 14, the 15 capacitor C 15, the 16 capacitor C 16, the 17 capacitor C 17, the 18 capacitor C 18, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21, the 22 resistance R 22, the 23 resistance R 23, the 24 resistance R24, the 25 resistance R 25, the 26 resistance R 26, triode Q1, the 3rd LED 3, the 4th LED 4, the 4th inductance L 4, 1 pin of four-core sheet IC4 is connected with an end of the 16 capacitor C 16, the negative pole of the 14 capacitor C 14, an end of the 15 capacitor C 15, an end of the 17 capacitor C 17, an end of the 20 resistance R 20 simultaneously, 2 pin of four-core sheet IC4 are connected with the positive pole of the 14 capacitor C 14, the other end of the 15 capacitor C 15, an end of the 26 resistance R 26 simultaneously, 3 pin of four-core sheet IC4 are connected with the other end of the 16 capacitor C 16, the negative pole of the 9th diode D9 simultaneously, 1 pin of the 5th chip IC 5 is connected with the other end of the 20 resistance R 20, an end of the 17 resistance R 17 simultaneously, and the other end of the 17 resistance R 17 is connected with the negative pole of the 5th diode D5, 2 pin of the 5th chip IC 5 are connected with an end of the 16 resistance R 16, the other end of the 17 capacitor C 17 simultaneously, and the other end of the 16 resistance R 16 is connected with the negative pole of the 8th capacitor C 8, 3 pin of the 5th chip IC 5 are connected with an end of the 18 capacitor C 18, an end of the 18 resistance R 18, the end of the 24 resistance R24 simultaneously, 4 pin ground connection of the 5th chip IC 5, 5 pin of the 5th chip IC 5 are connected with an end of the 25 resistance R 25, 6 pin of the 5th chip IC 5 are connected with an end of the 21 resistance R 21, an end of the 22 resistance R 22 simultaneously, the other end of the 21 resistance R 21 is connected with the positive pole of the 3rd LED 3, the other end of the 22 resistance R 22 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with the positive pole of the 4th LED 4, the emitter of triode Q1 is connected with the other end of the 26 resistance R 26, the minus earth of the negative pole of the 3rd LED 3, the 4th LED 4, 7 pin of the 5th chip IC 5 are connected with an end of the 19 resistance R 19, an end of the 23 resistance R 23 simultaneously, the other end of the 23 resistance R 23 is connected with the other end of the 24 resistance R24, the other end of the 25 resistance R 25 simultaneously, and the other end of the 19 resistance R 19 is connected with the positive pole of the tenth capacitor C 10, 8 pin of the 5th chip IC 5 are connected with 2 pin of four-core sheet IC4.
Described the 3rd capacitor C 3, the 8th capacitor C 8, the 11 capacitor C 11, the 13 capacitor C 13, the 14 capacitor C 14 are electrochemical capacitor; Described the 6th diode is voltage stabilizing didoe.
The utility model beneficial effect is as follows:
The utility model is simple and practical, the user inserts power supply to the utility model at home, can be used as emergency light, simultaneously when the user is put onboard, or in carrying, the utility model can be used in flashlight, or the distress signal critical the time, or mobile phone, IPAD etc. are used as back-up source when needing charging.
Description of drawings
Fig. 1 is the precious drive circuit schematic diagram of the utility model charging;
Fig. 2 is the utility model lithium ion charging circuit schematic diagram;
Fig. 3 is the utility model LED drive circuit schematic diagram;
Fig. 4 is the utility model circuit different conditions workflow diagram.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Drive circuit with charging treasured and multipurpose LED function comprises the precious drive circuit of charging, lithium ion charging circuit, LED drive circuit.
As shown in Figure 1, the precious drive circuit of charging comprises the first switch S 1, the first chip IC 1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the second resistance R 8, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the first inductance L 1, the first diode D1, USB interface P1;
1 pin of the first chip IC 1 is connected with an end of the first capacitor C 1, the other end of the first capacitor C 1 is connected with 3 pin of the first chip IC 1, an end of the first inductance L 1, the negative pole of the first diode D1 simultaneously, and the other end of the first inductance L 1 is connected with an end of the second resistance R 2, an end of the second capacitor C 2, an end of the 4th resistance R 4, an end of the 3rd resistance R 3, the positive pole of the 3rd capacitor C 3,1 pin of USB interface P1 simultaneously; 5 pin of the first chip IC 1 are connected with the other end of the second resistance R 2, an end of the 5th resistance R 5, the other end of the second capacitor C 2 simultaneously; 8 pin of the first chip IC 1 are connected with an end of the 6th capacitor C 6; 4 pin of the first chip IC 1 are connected with the other end of the 6th capacitor C 6, the positive pole of the first diode D1, an end of the 5th resistance R 5, an end of the 6th resistance R 6, an end of the second resistance R 8, the negative pole of the 3rd capacitor C 3,4 pin and an end of 5 pin, the 7th resistance R 7, the end of the 4th capacitor C 4 of USB interface P1 simultaneously, simultaneously ground connection; 3 pin of USB interface P1 are connected with the other end of the 3rd resistance R 3, the other end of the 8th resistance R 8 simultaneously, and 2 pin of USB interface P1 are connected with the other end of the 4th resistance R 4, the other end of the 6th resistance R 6 simultaneously; 6 pin of the first chip IC 1 are connected with an end of the 5th capacitor C 5, and the other end of the 5th capacitor C 5 is connected with the other end of the 7th resistance R 7; 2 pin of the first chip IC 1 are connected with an end of the first resistance R 1, the other end of the 4th capacitor C 4, an end of the first switch S 1 simultaneously, and the other end of the first switch S 1 is connected with lithium ion battery group E1 positive pole; 7 pin of the first chip IC 1 are connected with the other end of the first resistance R 1.
As shown in Figure 2, the lithium ion charging circuit comprises the second chip IC 2, external adapter interface P2, the 3rd diode D3, the 5th diode D5, the 7th diode D7, the 8th diode D8, the 7th capacitor C 7, the 11 capacitor C 11, the 12 capacitor C 12, the 13 capacitor C 13, the 9th resistance R 9, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 15 resistance R 15, the second inductance L 2, lithium ion battery group E1;
2 pin of the second chip IC 2 are connected with 1 pin of the second chip IC 2, an end of the second inductance L 2, the negative pole of the 7th diode D7 simultaneously, the other end of the second inductance L 2 is connected with the positive pole of the 13 capacitor C 13, an end of the 7th capacitor C 7, an end of the 9th resistance R 9, the positive pole of the 3rd diode D3 simultaneously, and the negative pole of the 3rd diode D3 is connected with the positive pole of lithium ion battery group E1; 3 pin of the second chip IC 2 are connected with the positive pole of the 7th diode D7, the negative pole of the 13 capacitor C 13, an end of the 11 resistance R 11, an end of the 12 resistance R 12, an end of the 13 resistance R 13,6 pin of the second chip IC 2, the negative pole of the 11 capacitor C 11, an end of the 12 capacitor C 12,1 pin of external adapter interface P2 simultaneously, and ground connection; 4 pin of the second chip IC 2 are connected with the other end of the 7th capacitor C 7, the other end of the 9th resistance R 9 simultaneously; 5 pin of the second chip IC 2 are connected with the other end, the other end of the 13 resistance R 13, the lithium ion battery group E1 negative pole of the 11 resistance R 11 simultaneously; 7 pin of the second chip IC 2 are connected with 8 pin of the second chip IC 2, the positive pole of the 11 capacitor C 11, the other end of the 12 capacitor C 12, the negative pole of the 5th diode D5, the positive pole of the 8th diode D8 simultaneously, the positive pole of the 5th diode D5 is connected with 2 pin of external adapter interface P2, the negative pole of the 8th diode D8 is connected with an end of the 15 resistance R 15, and the other end of the 15 resistance R 15 is connected with 3 pin of four-core sheet IC4.
As shown in Figure 3, LED drive circuit comprises discharge circuit and single-chip microcomputer management circuit;
Discharge circuit comprises second switch S2, the 3rd chip IC 3, the tenth resistance R 10, the 14 resistance R 14, the 4th diode D4, the 6th diode D6, the 9th diode D9, the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the first LED 1, the second LED 2, the 3rd inductance L 3; 1 pin of the 3rd chip IC 3 is connected with 5 pin of the 5th chip IC 5; 2 pin of the 3rd chip IC 3 are connected with an end of the 3rd inductance L 3, an end of the 8th capacitor C 8, an end of the 9th capacitor C 9, the end of second switch S2, the positive pole of the 9th diode D9 simultaneously, the other end of second switch S2 is connected with the positive pole of lithium ion battery group E1, the equal ground connection of negative pole of the other end of the other end of the 8th capacitor C 8, the 9th capacitor C 9, the negative pole of the 9th diode D9, lithium ion battery group E1; 3 pin of the 3rd chip IC 3 are connected with the positive pole of the 6th diode D6, an end of the tenth resistance R 10 simultaneously, the other end of the tenth resistance R 10 is connected with an end of the 14 resistance R 14, the negative pole of the second LED 2 simultaneously, the other end ground connection of the 14 resistance R 14; 4 pin of the 3rd chip IC 3 are unsettled; 5 pin of the 3rd chip IC 3 are connected with 6 pin of the 3rd chip IC 3, the other end of the 3rd inductance L 3, the positive pole of the 4th diode D4 simultaneously, the negative pole of the 4th diode D4 is connected with the negative pole of the 6th diode D6, the positive pole of the first LED 1, the positive pole of the tenth capacitor C 10 simultaneously, the negative pole of the first LED 1 is connected with the positive pole of the second LED 2, the minus earth of the tenth capacitor C 10.
the single-chip microcomputer management circuit comprises four-core sheet IC4, the 5th chip IC 5, the 14 capacitor C 14, the 15 capacitor C 15, the 16 capacitor C 16, the 17 capacitor C 17, the 18 capacitor C 18, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21, the 22 resistance R 22, the 23 resistance R 23, the 24 resistance R24, the 25 resistance R 25, the 26 resistance R 26, triode Q1, the 3rd LED 3, the 4th LED 4, the 4th inductance L 4, 1 pin of four-core sheet IC4 is connected with an end of the 16 capacitor C 16, the negative pole of the 14 capacitor C 14, an end of the 15 capacitor C 15, an end of the 17 capacitor C 17, an end of the 20 resistance R 20 simultaneously, 2 pin of four-core sheet IC4 are connected with the positive pole of the 14 capacitor C 14, the other end of the 15 capacitor C 15, an end of the 26 resistance R 26 simultaneously, 3 pin of four-core sheet IC4 are connected with the other end of the 16 capacitor C 16, the negative pole of the 9th diode D9 simultaneously, 1 pin of the 5th chip IC 5 is connected with the other end of the 20 resistance R 20, an end of the 17 resistance R 17 simultaneously, and the other end of the 17 resistance R 17 is connected with the negative pole of the 5th diode D5, 2 pin of the 5th chip IC 5 are connected with an end of the 16 resistance R 16, the other end of the 17 capacitor C 17 simultaneously, and the other end of the 16 resistance R 16 is connected with the negative pole of the 8th capacitor C 8, 3 pin of the 5th chip IC 5 are connected with an end of the 18 capacitor C 18, an end of the 18 resistance R 18, the end of the 24 resistance R24 simultaneously, 4 pin ground connection of the 5th chip IC 5, 5 pin of the 5th chip IC 5 are connected with an end of the 25 resistance R 25, 6 pin of the 5th chip IC 5 are connected with an end of the 21 resistance R 21, an end of the 22 resistance R 22 simultaneously, the other end of the 21 resistance R 21 is connected with the positive pole of the 3rd LED 3, the other end of the 22 resistance R 22 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with the positive pole of the 4th LED 4, the emitter of triode Q1 is connected with the other end of the 26 resistance R 26, the minus earth of the negative pole of the 3rd LED 3, the 4th LED 4, 7 pin of the 5th chip IC 5 are connected with an end of the 19 resistance R 19, an end of the 23 resistance R 23 simultaneously, the other end of the 23 resistance R 23 is connected with the other end of the 24 resistance R24, the other end of the 25 resistance R 25 simultaneously, and the other end of the 19 resistance R 19 is connected with the positive pole of the tenth capacitor C 10, 8 pin of the 5th chip IC 5 are connected with 2 pin of four-core sheet IC4.
Described the 3rd capacitor C 3, the 8th capacitor C 8, the 11 capacitor C 11, the 13 capacitor C 13, the 14 capacitor C 14 are electrochemical capacitor; Described the 6th diode is voltage stabilizing didoe.
Described lithium ion battery group E1 adopts 4400mAh, the 7.4V power brick, and its inside is with overvoltage, overcurrent, Cross prevention, its maximum charging voltage 8.4V.The second chip IC 2 adopts XL4001, and realization is charged the constant current that the input of 12-24V becomes 800mA to battery, carry out constant voltage charge after being charged to 8.4.The input of outside DC12-24V can both be charged to battery.
The 3rd chip IC 3 models in LED drive circuit are XL6003, and master chip is realized the constant current that the voltage transformation at lithium ion battery group E1 two ends is 12V/700mA is discharged to 8.4WLED light fixture (the first LED 1, the second LED 2).
Charging, the model of the first chip IC 1 is SX2013 in precious drive circuit, can realize that be the voltage stabilizing output of 5V/2A to the voltage transformation at lithium ion battery group E1 two ends, by USB interface to PAD or cell-phone charging.
The 5th chip IC 5(single-chip microcomputer) model is ATting13A, wherein 1 pin of the 5th chip IC 5 is to the A point sampling, 2 pin of the 5th chip IC 5 are sampled to the B point, and 3 pin of the 5th chip IC 5 are sampled to the C point, and 7 pin of the 5th chip IC 5 are sampled to the D point.5 pin output PWM of the 5th chip IC 5 control the E point, and 6 pin output high-low levels of the 5th chip IC 5 are controlled LED light (the 3rd LED 3, the 4th LED 4);
Described A point refers to the magnitude of voltage that Vin is ordered, and the B point refers to the magnitude of voltage that BAT+ is ordered, and the C point refers to the magnitude of voltage that SGND is ordered, and the D point refers to the magnitude of voltage that Vout is ordered, and the E point refers to the value of 1 pin of the 3rd chip IC 3, and the F point refers to the value of 6 pins of the 5th chip IC 5.
As shown in Figure 4, the utility model specific works process is as follows:
The lithium ion charging circuit is realized outside direct current is carried out the DC/DC conversion, and has the output voltage feedback function.This charging circuit has first constant current charge, after the saturation voltage that is charged to cell voltage, carries out constant voltage charge.Because lithium ion battery group E1 itself has charge protection and discharge prevention plate, therefore, need not the design protection circuit here.By the 5th chip IC 5(single-chip microcomputer) the E1 both end voltage is sampled, determine the capacity of battery according to the size of magnitude of voltage, and show by LED light.Battery capacity is less than 90%, and LED light is in blink states, and greater than 90%, it is green that indicator light turns when capacity.
The LED drive circuit realization is undertaken constant-current discharge to the voltage at lithium ion battery group two ends by DC/DC transfer pair LED light fixture, and carries out overvoltage protection.The realization of constant current is by to flowing through the current sample of LED, and realizes after feeding back to DC/DC.Overvoltage protection is to the output voltage sampling, and when the voltage that gathers surpassed limit value, the single-chip microcomputer output signal was turn-offed LED drive circuit.The output current size of LED drive circuit is carried out PWM by single-chip microcomputer and is controlled, when PWM100% exports, and the output maximum current, when accounting for control than variation, the booster circuit output current reduces, when PWM is output as 0, booster circuit is output as 0 electric current, thereby closes output current fully.Simultaneously, by mcu programming, can export the SOS signal with light representations.
The booster circuit front is provided with key switch, and this switch is used for controlling the output of lithium ion battery, is also state switch simultaneously.When switch was in long-term disconnection, lithium ion battery did not have discharge loop, thereby can keep for a long time electric weight, can avoid for a long time need not after, lithium ion battery was in the state of putting, thus the infringement battery; Single-chip microcomputer can capture the state of key switch, the operating state of determining LED according to state and the course of action of switch, as shown in Figure 4.
After the utility model inserts power supply, the A point is high level, if key switch is in when having no progeny state, being that the C point is in low level, at this moment, is the lithium ion cell charging pattern, under charged state, still monitor the C level point, finding has level button process from low to high, and the state of LED light will change once; When if button is in closure state, namely the C point is high level, and at first LED light can be closed, and then lithium ion is charged, and simultaneously, single-chip microcomputer monitors power supply point A, in case find there is no electricity, will automatically open the LED light fixture illumination is provided.After again electricity being arranged in circuit, can automatically turn off the light again, simultaneously, provide charging to lithium ion.
When the utility model did not insert power supply, the first switch S 1 or second switch S2 were closed, perhaps two switches all closure just can make the single-chip microcomputer starting.What entered this moment is light illumination mode or the precious pattern of charging.Under this state, closed again within key switch disconnects rear three seconds, be switching process one time, the state of LED light can change, and each switching process changes LED light in order successively, after end, circulation again.If could not be closed within 3 seconds, microcontroller power supply be turned off, if open, the LED light state is from newly again.Simultaneously, the 5th chip IC 5 (single-chip microcomputer) is sampled to B point voltage value always, judges the capacity of battery according to magnitude of voltage, and indicates by LED light.And be under the precious pattern of charging, also can monitor on the one hand the switching process that C is ordered, also showing on the one hand the battery capacity of lithium ion can provide information about power for the user.During discharge, battery capacity is transformed into blink states automatically less than 30% rear LED light, charges with the prompting user, after capacity is less than 10%, warns the user with red light.Simultaneously, the brightness meeting of LED light weakens, and reduces to 50% power rating, thereby extends working time.
USB interface P1 be adopt this lithium ion battery in support power supply miscellaneous equipment is charged.What adopt equally is the DC-DC translation circuit, has designed the output of 5V/2A.Front end at LED drive circuit has designed second switch S2 equally, and when only pressing, drive circuit could be worked.Under this state, single-chip microcomputer is worked equally, can show the capability value of battery.
Due at the precious state of charging, LED lamp operating state, under emergency light and charged state, single-chip microcomputer all needs work, and these also not single-chip microcomputer work when all not working, to avoid long-term loss electric energy.Therefore design single-chip microcomputer power supply circuits as shown in Figure 3.Mainly contain three supply power voltage A, C and G.When there was voltage any point, the input of TLV117 had voltage.TLV117 can change 6.4V into 5V voltage to 15V, supplies with single-chip microcomputer and uses.Simultaneously, because the C point will carry out switch motion, therefore, at large electric capacity of output termination of TLV117, after the TLV117 input is stopped power supply, by this capacitances to supply power, still can guarantee single-chip microcomputer work 3 seconds, and at this moment, because the C point will supply drive circuit, therefore very fast voltage is just reduced to low level, gathers by single-chip microcomputer the magnitude of voltage that C is ordered, and just can judge switching process one time.
Claims (2)
1. the drive circuit that has charging treasured and multipurpose LED function is characterized in that comprising the precious drive circuit of charging, lithium ion charging circuit, LED drive circuit;
The precious drive circuit of described charging comprises the first switch S 1, the first chip IC 1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the second resistance R 8, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the first inductance L 1, the first diode D1, USB interface P1;
1 pin of the first chip IC 1 is connected with an end of the first capacitor C 1, the other end of the first capacitor C 1 is connected with 3 pin of the first chip IC 1, an end of the first inductance L 1, the negative pole of the first diode D1 simultaneously, and the other end of the first inductance L 1 is connected with an end of the second resistance R 2, an end of the second capacitor C 2, an end of the 4th resistance R 4, an end of the 3rd resistance R 3, the positive pole of the 3rd capacitor C 3,1 pin of USB interface P1 simultaneously; 5 pin of the first chip IC 1 are connected with the other end of the second resistance R 2, an end of the 5th resistance R 5, the other end of the second capacitor C 2 simultaneously; 8 pin of the first chip IC 1 are connected with an end of the 6th capacitor C 6; 4 pin of the first chip IC 1 are connected with the other end of the 6th capacitor C 6, the positive pole of the first diode D1, an end of the 5th resistance R 5, an end of the 6th resistance R 6, an end of the second resistance R 8, the negative pole of the 3rd capacitor C 3,4 pin and an end of 5 pin, the 7th resistance R 7, the end of the 4th capacitor C 4 of USB interface P1 simultaneously, simultaneously ground connection; 3 pin of USB interface P1 are connected with the other end of the 3rd resistance R 3, the other end of the 8th resistance R 8 simultaneously, and 2 pin of USB interface P1 are connected with the other end of the 4th resistance R 4, the other end of the 6th resistance R 6 simultaneously; 6 pin of the first chip IC 1 are connected with an end of the 5th capacitor C 5, and the other end of the 5th capacitor C 5 is connected with the other end of the 7th resistance R 7; 2 pin of the first chip IC 1 are connected with an end of the first resistance R 1, the other end of the 4th capacitor C 4, an end of the first switch S 1 simultaneously, and the other end of the first switch S 1 is connected with lithium ion battery group E1 positive pole; 7 pin of the first chip IC 1 are connected with the other end of the first resistance R 1;
Described lithium ion charging circuit comprises the second chip IC 2, external adapter interface P2, the 3rd diode D3, the 5th diode D5, the 7th diode D7, the 8th diode D8, the 7th capacitor C 7, the 11 capacitor C 11, the 12 capacitor C 12, the 13 capacitor C 13, the 9th resistance R 9, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the 15 resistance R 15, the second inductance L 2, lithium ion battery group E1;
2 pin of the second chip IC 2 are connected with 1 pin of the second chip IC 2, an end of the second inductance L 2, the negative pole of the 7th diode D7 simultaneously, the other end of the second inductance L 2 is connected with the positive pole of the 13 capacitor C 13, an end of the 7th capacitor C 7, an end of the 9th resistance R 9, the positive pole of the 3rd diode D3 simultaneously, and the negative pole of the 3rd diode D3 is connected with the positive pole of lithium ion battery group E1; 3 pin of the second chip IC 2 are connected with the positive pole of the 7th diode D7, the negative pole of the 13 capacitor C 13, an end of the 11 resistance R 11, an end of the 12 resistance R 12, an end of the 13 resistance R 13,6 pin of the second chip IC 2, the negative pole of the 11 capacitor C 11, an end of the 12 capacitor C 12,1 pin of external adapter interface P2 simultaneously, and ground connection; 4 pin of the second chip IC 2 are connected with the other end of the 7th capacitor C 7, the other end of the 9th resistance R 9 simultaneously; 5 pin of the second chip IC 2 are connected with the other end, the other end of the 13 resistance R 13, the lithium ion battery group E1 negative pole of the 11 resistance R 11 simultaneously; 7 pin of the second chip IC 2 are connected with 8 pin of the second chip IC 2, the positive pole of the 11 capacitor C 11, the other end of the 12 capacitor C 12, the negative pole of the 5th diode D5, the positive pole of the 8th diode D8 simultaneously, the positive pole of the 5th diode D5 is connected with 2 pin of external adapter interface P2, the negative pole of the 8th diode D8 is connected with an end of the 15 resistance R 15, and the other end of the 15 resistance R 15 is connected with 3 pin of four-core sheet IC4;
Described LED drive circuit comprises discharge circuit and single-chip microcomputer management circuit;
Discharge circuit comprises second switch S2, the 3rd chip IC 3, the tenth resistance R 10, the 14 resistance R 14, the 4th diode D4, the 6th diode D6, the 9th diode D9, the 8th capacitor C 8, the 9th capacitor C 9, the tenth capacitor C 10, the first LED 1, the second LED 2, the 3rd inductance L 3; 1 pin of the 3rd chip IC 3 is connected with 5 pin of the 5th chip IC 5; 2 pin of the 3rd chip IC 3 are connected with an end of the 3rd inductance L 3, an end of the 8th capacitor C 8, an end of the 9th capacitor C 9, the end of second switch S2, the positive pole of the 9th diode D9 simultaneously, the other end of second switch S2 is connected with the positive pole of lithium ion battery group E1, the equal ground connection of negative pole of the other end of the other end of the 8th capacitor C 8, the 9th capacitor C 9, the negative pole of the 9th diode D9, lithium ion battery group E1; 3 pin of the 3rd chip IC 3 are connected with the positive pole of the 6th diode D6, an end of the tenth resistance R 10 simultaneously, the other end of the tenth resistance R 10 is connected with an end of the 14 resistance R 14, the negative pole of the second LED 2 simultaneously, the other end ground connection of the 14 resistance R 14; 4 pin of the 3rd chip IC 3 are unsettled; 5 pin of the 3rd chip IC 3 are connected with 6 pin of the 3rd chip IC 3, the other end of the 3rd inductance L 3, the positive pole of the 4th diode D4 simultaneously, the negative pole of the 4th diode D4 is connected with the negative pole of the 6th diode D6, the positive pole of the first LED 1, the positive pole of the tenth capacitor C 10 simultaneously, the negative pole of the first LED 1 is connected with the positive pole of the second LED 2, the minus earth of the tenth capacitor C 10;
the single-chip microcomputer management circuit comprises four-core sheet IC4, the 5th chip IC 5, the 14 capacitor C 14, the 15 capacitor C 15, the 16 capacitor C 16, the 17 capacitor C 17, the 18 capacitor C 18, the 16 resistance R 16, the 17 resistance R 17, the 18 resistance R 18, the 19 resistance R 19, the 20 resistance R 20, the 21 resistance R 21, the 22 resistance R 22, the 23 resistance R 23, the 24 resistance R24, the 25 resistance R 25, the 26 resistance R 26, triode Q1, the 3rd LED 3, the 4th LED 4, the 4th inductance L 4, 1 pin of four-core sheet IC4 is connected with an end of the 16 capacitor C 16, the negative pole of the 14 capacitor C 14, an end of the 15 capacitor C 15, an end of the 17 capacitor C 17, an end of the 20 resistance R 20 simultaneously, 2 pin of four-core sheet IC4 are connected with the positive pole of the 14 capacitor C 14, the other end of the 15 capacitor C 15, an end of the 26 resistance R 26 simultaneously, 3 pin of four-core sheet IC4 are connected with the other end of the 16 capacitor C 16, the negative pole of the 9th diode D9 simultaneously, 1 pin of the 5th chip IC 5 is connected with the other end of the 20 resistance R 20, an end of the 17 resistance R 17 simultaneously, and the other end of the 17 resistance R 17 is connected with the negative pole of the 5th diode D5, 2 pin of the 5th chip IC 5 are connected with an end of the 16 resistance R 16, the other end of the 17 capacitor C 17 simultaneously, and the other end of the 16 resistance R 16 is connected with the negative pole of the 8th capacitor C 8, 3 pin of the 5th chip IC 5 are connected with an end of the 18 capacitor C 18, an end of the 18 resistance R 18, the end of the 24 resistance R24 simultaneously, 4 pin ground connection of the 5th chip IC 5, 5 pin of the 5th chip IC 5 are connected with an end of the 25 resistance R 25, 6 pin of the 5th chip IC 5 are connected with an end of the 21 resistance R 21, an end of the 22 resistance R 22 simultaneously, the other end of the 21 resistance R 21 is connected with the positive pole of the 3rd LED 3, the other end of the 22 resistance R 22 is connected with the base stage of triode Q1, the collector electrode of triode Q1 is connected with the positive pole of the 4th LED 4, the emitter of triode Q1 is connected with the other end of the 26 resistance R 26, the minus earth of the negative pole of the 3rd LED 3, the 4th LED 4, 7 pin of the 5th chip IC 5 are connected with an end of the 19 resistance R 19, an end of the 23 resistance R 23 simultaneously, the other end of the 23 resistance R 23 is connected with the other end of the 24 resistance R24, the other end of the 25 resistance R 25 simultaneously, and the other end of the 19 resistance R 19 is connected with the positive pole of the tenth capacitor C 10, 8 pin of the 5th chip IC 5 are connected with 2 pin of four-core sheet IC4.
2. the drive circuit with charging treasured and multipurpose LED function as claimed in claim 1, is characterized in that described the 3rd capacitor C 3, the 8th capacitor C 8, the 11 capacitor C 11, the 13 capacitor C 13, the 14 capacitor C 14 are electrochemical capacitor; Described the 6th diode is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320261842 CN203278319U (en) | 2013-05-13 | 2013-05-13 | Drive circuit having charger and multi-purpose LED functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320261842 CN203278319U (en) | 2013-05-13 | 2013-05-13 | Drive circuit having charger and multi-purpose LED functions |
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| CN203278319U true CN203278319U (en) | 2013-11-06 |
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| CN 201320261842 Expired - Fee Related CN203278319U (en) | 2013-05-13 | 2013-05-13 | Drive circuit having charger and multi-purpose LED functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683239A (en) * | 2018-08-04 | 2018-10-19 | 东莞市三敏电子科技有限公司 | A kind of USB charging circuits of electric intelligent household |
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2013
- 2013-05-13 CN CN 201320261842 patent/CN203278319U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683239A (en) * | 2018-08-04 | 2018-10-19 | 东莞市三敏电子科技有限公司 | A kind of USB charging circuits of electric intelligent household |
| CN108683239B (en) * | 2018-08-04 | 2024-02-23 | 东莞市三敏电子科技有限公司 | USB charging circuit of electric intelligent home |
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