CN209200708U - A kind of emergency light power charging circuit - Google Patents

Abstract

The utility model provides a kind of emergency light power charging circuit, circuit core device includes switching power source chip U1, high frequency transformer T2, singlechip chip U3, three terminal regulator chip U4, triode Q1, triode Q2 etc., particular by the feedback element circuit of addition switching power source chip U1, in conjunction with the detection control function of single-chip microcontroller U1, the function that high-quality Current Voltage charges to emergency light internal cell is realized, the rechargeable battery service life can be effectively extended.

Description

A kind of emergency light power charging circuit

Technical field

The utility model is a kind of emergency light power charging circuit, belongs to emergency light field of lighting devices.

Background technique

Emergency light is the general name of the lamps and lanterns of emergency lighting, fire emergency system mainly include accident emergency illumination, Escape hatch mark and indicator light are guidance trapped person evacuation or expansion in the case of fire after normal illumination dump Fire fighting and rescue action and be arranged, emergency light has been provided with battery, when in use, need to charge to the battery of its inside, Existing emergency light power charging circuit structure has certain defect, it cannot be guaranteed that the high-quality of charging voltage and electric current, from And the service life of rechargeable battery is influenced, it needs to make improvements.

Utility model content

In view of the deficienciess of the prior art, the utility model aim is to provide a kind of emergency light power charging circuit, with The problems mentioned above in the background art are solved, the utility model is easy to use, realizes and fills to emergency light internal cell The function of electricity, stability is good, high reliablity.

To achieve the goals above, the utility model is achieved through the following technical solutions: a kind of emergency light power supply Charging circuit, including switching power circuit and charging control circuit, the switching power circuit include switching power source chip U1, institute State No. 1 of switching power source chip U1, No. 2 pins are connected by conducting wire and be connected to No. 4 pins of full-wave rectification bridge, the switch No. 3 the 1st branches of pin of power supply chip U1 connect No. 4 pins of full-wave rectification bridge by capacitor C3, and the 2nd branch connects triode Q1's Collector, the emitter of triode Q1 connect No. 4 pins of switching power source chip U1, and the 1st branch of base stage of triode Q passes through resistance R2 connects No. 4 pins of full-wave rectification bridge, and the 2nd branch connects No. 2 pins of full-wave rectification bridge, the full-wave rectification bridge by resistance R1 No. 4 the 1st branches of pin of No. 4 pin switching power source chip U1 connect No. 4 pins of full-wave rectification bridge by capacitor C4, the 2nd Road connects No. 4 pins of primary side of high frequency transformer T2 by resistance R5, diode D6, and primary side 2 of high frequency transformer T2 are drawn Foot connects No. 4 pins of full-wave rectification bridge, and No. 5 pins of the switching power source chip U1 connect full-wave rectification bridge by resistance R3 No. 4 pins, No. 6 of the switching power source chip U1, No. 7, No. 8 pins the anode of diode D5 is connected and is connected to by conducting wire, No. 1 pin that the all-wave arranges bridge connects the end L of industrial-frequency alternating current by fuse FUSE1, and No. 2 of the all-wave arrangement bridge are drawn The 1st branch of foot, which is powered, holds No. 4 pins that C1 connects all-wave arrangement bridge, and the 2nd branch connects the cathode of diode D5, the 3rd branch by R4 The cathode of diode D5 is connect by capacitor C2, the 4th branch connects No. 1 pin of high frequency transformer T2, high frequency transformer by conducting wire No. 3 pins of T2 connect the anode of diode D5, and No. 3 pins that the all-wave arranges bridge connect the N-terminal of industrial-frequency alternating current by conducting wire, No. 7 pins of the high frequency transformer T2 secondary side connect the anode of diode D7, and the cathode of diode D7 is grounded by capacitor C5, No. 5 pins of high frequency transformer T2 secondary side connected wired earth；The charging control circuit includes singlechip chip U3, institute No. 1 pin for stating singlechip chip U3 meets ground terminal and the ground connection of three terminal regulator U4, the singlechip chip U3 by conducting wire No. 5 the 1st branches of pin be grounded by resistance R6, the 2nd branch connects the cathode of diode D7, the monolithic machine core by resistance R7 No. 6 pins of piece U3 are grounded by resistance R8, Light-emitting diode LED 1, and No. 9 pins of the singlechip chip U3 pass through resistance R12 connects the base stage of triode Q2, and the emitter of triode Q2 is grounded by Light-emitting diode LED 2, resistance R9, the collection of three-level Q2 Electrode connects the anode of rechargeable battery BATT by fuse, and the cathode of rechargable battery BATT is grounded, and the 13 of the singlechip chip U3 Number the 1st branch of pin is grounded by R11, and the 2nd branch connects the anode of rechargable battery BATT, the singlechip chip by resistance R10 No. 16 pins of U3 connect the output end of three terminal regulator U4 by conducting wire, and the output end of the three terminal regulator U4 passes through capacitor C4 Ground connection, the 1st branch of input terminal of three terminal regulator U4 connect the cathode of diode D7 by conducting wire, and the 2nd branch leads to diode D8 and connects The collector of triode Q2.

Further, the chip model of the power supply control chip U1 is SDH8303, the chip of the singlechip chip U3 The chip model of model PIC16, the three terminal regulator chip U4 are 7330, and the triode Q1 is PNP type triode, three Pole pipe Q2 is NPN type triode.

The utility model has the beneficial effects that a kind of emergency light power charging circuit of the utility model, circuit core device Including switching power source chip U1, high frequency transformer T2, singlechip chip U3, three terminal regulator chip U4, triode Q1, triode Q2 etc., it is real in conjunction with the detection control function of single-chip microcontroller U1 particular by the feedback element circuit of addition switching power source chip U1 Show the function that high-quality Current Voltage charges to emergency light internal cell, can effectively extend the rechargeable battery service life.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon:

Fig. 1 is a kind of circuit diagram of emergency light power charging circuit of the utility model.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described.

Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of emergency light power charging circuit, including switch Power circuit and charging control circuit, the switching power circuit include switching power source chip U1, the switching power source chip U1 No. 1, No. 2 pins connect and be connected to No. 4 pins of full-wave rectification bridge by conducting wire, No. 3 of the switching power source chip U1 The 1st branch of pin connects No. 4 pins of full-wave rectification bridge by capacitor C3, and the 2nd branch meets the collector of triode Q1, triode Q1 Emitter connect No. 4 pins of switching power source chip U1, the 1st branch of base stage of triode Q connects full-wave rectification bridge by resistance R2 No. 4 pins, the 2nd branch connects No. 2 pins of full-wave rectification bridge by resistance R1, No. 4 pins switch of the full-wave rectification bridge No. 4 the 1st branches of pin of power supply chip U1 connect No. 4 pins of full-wave rectification bridge by capacitor C4, the 2nd branch by resistance R5, Diode D6 connects No. 4 pins of primary side of high frequency transformer T2, and No. 2 pins of primary side of high frequency transformer T2 connect full-wave rectification No. 4 pins of bridge, No. 5 pins of the switching power source chip U1 connect No. 4 pins of full-wave rectification bridge by resistance R3, described to open No. 6 of powered-down source chip U1, No. 7, No. 8 pins the anode of diode D5 is connected and is connected to by conducting wire, the all-wave arranges bridge No. 1 pin the end L of industrial-frequency alternating current is connect by fuse FUSE1, No. 2 the 1st branches of pin that the all-wave arranges bridge are powered Hold C1 and connect No. 4 pins that all-wave arranges bridge, the 2nd branch connects the cathode of diode D5 by R4, and the 3rd branch connects two by capacitor C2 The cathode of pole pipe D5, the 4th branch connect No. 1 pin of high frequency transformer T2 by conducting wire, and No. 3 pins of high frequency transformer T2 connect two The anode of pole pipe D5, No. 3 pins that the all-wave arranges bridge connect the N-terminal of industrial-frequency alternating current, the high frequency transformer by conducting wire No. 7 pins of T2 secondary side connect the anode of diode D7, and the cathode of diode D7 is grounded by capacitor C5, high frequency transformer T2 bis- No. 5 pins of secondary side connected wired earth.

The charging control circuit includes singlechip chip U3, and No. 1 pin of the singlechip chip U3 is connect by conducting wire The ground terminal and ground connection, No. 5 the 1st branches of pin of the singlechip chip U3 of three terminal regulator U4 is grounded by resistance R6, and the 2nd Branch connects the cathode of diode D7 by resistance R7, and No. 6 pins of the singlechip chip U3 pass through resistance R8, light emitting diode LED1 ground connection, No. 9 pins of the singlechip chip U3 connect the base stage of triode Q2, the transmitting of triode Q2 by resistance R12 Pole is grounded by Light-emitting diode LED 2, resistance R9, and the collector of three-level Q2 connects the anode of rechargeable battery BATT by fuse, The cathode of rechargable battery BATT is grounded, and No. 13 the 1st branches of pin of the singlechip chip U3 are grounded by R11, and the 2nd branch passes through Resistance R10 connects the anode of rechargable battery BATT, and No. 16 pins of the singlechip chip U3 connect three terminal regulator U4's by conducting wire The output end of output end, the three terminal regulator U4 is grounded by capacitor C4, and the 1st branch of input terminal of three terminal regulator U4 passes through Conducting wire connects the cathode of diode D7, and the 2nd branch leads to the collector that diode D8 meets triode Q2.

The chip model of power supply control chip U1 is SDH8303, and the chip model of singlechip chip U3 is PIC16, three ends The chip model of voltage regulator chip U4 is 7330, and triode Q1 is PNP type triode, triode Q2 is NPN type triode.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, for For those skilled in the art, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and without departing substantially from this In the case where the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute Attached claim rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims All changes are embraced therein.It should not treat any reference in the claims as limiting related right It is required that.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (2)

1. a kind of emergency light power charging circuit, including switching power circuit and charging control circuit, it is characterised in that: described to open Powered-down source circuit includes switching power source chip U1, and No. 1 of the switching power source chip U1, No. 2 pins connect and connected by conducting wire It is connected to No. 4 pins of full-wave rectification bridge, it is whole that No. 3 the 1st branches of pin of the switching power source chip U1 by capacitor C3 connect all-wave No. 4 pins of bridge are flowed, the 2nd branch connects the collector of triode Q1, and the emitter of triode Q1 connects No. 4 of switching power source chip U1 Pin, the 1st branch of base stage of triode Q connect No. 4 pins of full-wave rectification bridge by resistance R2, and the 2nd branch is connect by resistance R1 No. 4 the 1st branches of pin of No. 2 pins of full-wave rectification bridge, No. 4 pin switching power source chip U1 of the full-wave rectification bridge pass through Capacitor C4 connects No. 4 pins of full-wave rectification bridge, and the 2nd branch connects the primary side 4 of high frequency transformer T2 by resistance R5, diode D6 Number pin, No. 2 pins of primary side of high frequency transformer T2 meet No. 4 pins of full-wave rectification bridge, the switching power source chip U1 No. 5 pins No. 4 pins of full-wave rectification bridge, No. 6, No. 7, No. 8 pins of the switching power source chip U1 are connect by resistance R3 The anode of diode D5 is connected and is connected to by conducting wire, and No. 1 pin that the all-wave arranges bridge connects power frequency by fuse FUSE1 The end L of alternating current, No. 2 the 1st branches of pin that the all-wave arranges bridge, which are powered, holds No. 4 pins that C1 connects all-wave arrangement bridge, and the 2nd Road connects the cathode of diode D5 by R4, and the 3rd branch connects the cathode of diode D5 by capacitor C2, and the 4th branch is connect by conducting wire No. 1 pin of high frequency transformer T2, No. 3 pins of high frequency transformer T2 connect the anode of diode D5, and the all-wave arranges the 3 of bridge Number pin connects the N-terminal of industrial-frequency alternating current by conducting wire, and No. 7 pins of the high frequency transformer T2 secondary side connect the sun of diode D7 The cathode of pole, diode D7 is grounded by capacitor C5, and No. 5 pins of high frequency transformer T2 secondary side connected wired earth；

The charging control circuit includes singlechip chip U3, and No. 1 pin of the singlechip chip U3 connects three ends by conducting wire The ground terminal and ground connection, No. 5 the 1st branches of pin of the singlechip chip U3 of voltage-stablizer U4 is grounded by resistance R6, the 2nd branch The cathode of diode D7 is connect by resistance R7, No. 6 pins of the singlechip chip U3 pass through resistance R8, Light-emitting diode LED 1 Ground connection, No. 9 pins of the singlechip chip U3 connect the base stage of triode Q2 by resistance R12, and the emitter of triode Q2 is logical Light-emitting diode LED 2, resistance R9 ground connection are crossed, the collector of three-level Q2 is connect the anode of rechargeable battery BATT by fuse, charged The cathode of pond BATT is grounded, and No. 13 the 1st branches of pin of the singlechip chip U3 are grounded by R11, and the 2nd branch passes through resistance R10 connects the anode of rechargable battery BATT, and No. 16 pins of the singlechip chip U3 connect the output of three terminal regulator U4 by conducting wire End, the output end of the three terminal regulator U4 are grounded by capacitor C4, and the 1st branch of input terminal of three terminal regulator U4 passes through conducting wire The cathode of diode D7 is connect, the 2nd branch leads to the collector that diode D8 meets triode Q2.

2. a kind of emergency light power charging circuit according to claim 1, it is characterised in that: the power supply control chip U1 Chip model be SDH8303, the chip model of the singlechip chip U3 is PIC16, the three terminal regulator chip U4's Chip model is 7330, and the triode Q1 is PNP type triode, triode Q2 is NPN type triode.