CN112333880A - Emergency lighting power supply circuit applied to LED lamp - Google Patents

Emergency lighting power supply circuit applied to LED lamp Download PDF

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Publication number
CN112333880A
CN112333880A CN202011032757.0A CN202011032757A CN112333880A CN 112333880 A CN112333880 A CN 112333880A CN 202011032757 A CN202011032757 A CN 202011032757A CN 112333880 A CN112333880 A CN 112333880A
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pin
diode
resistor
module
detection module
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Granted
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CN202011032757.0A
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CN112333880B (en
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叶兵
刘江
杨海全
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Zhongshan Ledtimes Group Co ltd
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Zhongshan Ledtimes Group Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The invention provides an emergency lighting power supply circuit applied to an LED lamp, which comprises a main control chip module, a rectifying and filtering module, an input voltage detection module, a relay control module, a battery charging management module, a buzzer prompt module, an indicator lamp and test key module, a battery voltage detection module, an output no-load detection module, an inverter voltage output module and a load current sampling detection module, wherein the rectifying and filtering module is electrically connected with the input voltage detection module and the relay control module, and the battery charging management module, the battery voltage detection module, the output no-load detection module, the inverter voltage output module and the load current sampling detection module are sequentially and electrically connected. The emergency lighting power supply circuit applied to the LED lamp is internally provided with the lithium battery, the functional circuits for battery protection, on-off, detection and the like and the corresponding output terminals, so that the actual emergency lighting of the conventional lighting LED lamp can be realized.

Description

Emergency lighting power supply circuit applied to LED lamp
Technical Field
The invention relates to the technical field of electronic circuits, in particular to an emergency lighting power supply circuit applied to an LED lamp.
Background
At present, the LED lamp with the emergency lighting function on the market can automatically light up to provide necessary lighting or indication when the mains supply is abnormal, and can be used as a common lighting LED lamp when the mains supply is normal.
However, in practice, in order to ensure that the LED lamp can maintain a good working state at any time, regular routine inspection of the LED lamp is required to avoid failure and invalidation, that is, an inspector is required to arrive at a site to disassemble the LED lamp and perform routine inspection on the LED lamp, which is inconvenient and wastes manpower and time to a certain extent.
Therefore, it is desirable to provide an emergency lighting power circuit applied to an LED lamp to solve the above technical problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing an emergency lighting power supply circuit applied to an LED lamp, solves the problem that manpower and time are wasted to a certain extent because an inspector needs to detach the LED lamp on site to carry out routine inspection on the LED lamp so as to avoid faults and failures of the LED lamp, and can enable the conventional lighting LED lamp to actually carry out emergency lighting by arranging a lithium battery, a functional circuit for protecting, switching on and off, detecting and the like and a corresponding output terminal.
In order to solve the technical problems, one technical scheme adopted by the invention is to provide an emergency lighting power supply circuit applied to an LED lamp, which comprises a main control chip module 1, a rectification filter module 2, an input voltage detection module 3, a relay control module 4, a battery charging management module 5, a buzzer prompt module 6, an indicator lamp and test key module 7, a battery voltage detection module 8, an output no-load detection module 9, an inverter voltage output module 10 and a load current sampling detection module 11; the main control chip module 1 is electrically connected with the rectification filter module 2, the input voltage detection module 3, the relay control module 4, the battery charging management module 5, the buzzer prompt module 6, the indicator lamp and test key module 7, the battery voltage detection module 8, the output no-load detection module 9, the inverter voltage output module 10 and the load current sampling detection module 11, the rectification filter module 2 is electrically connected with the input voltage detection module 3 and the relay control module 4, and the battery charging management module 5, the battery voltage detection module 8, the output no-load detection module 9, the inverter voltage output module 10 and the load current sampling detection module 11 are sequentially and electrically connected.
In the examples, it is preferred that:
the main control chip module 1 at least comprises a special chip U2 with the model number YTE 1809; the 3 rd pin of the special chip U2 is connected with the relay control module 4, the 5 th pin is connected with the input voltage detection module 3 and the 14 th pin is grounded;
the battery charging management module 5 at least comprises a battery port BT PIN2, a fuse F2 and a diode D9; the 1 st PIN of the battery port BT PIN2 is grounded, the 2 nd PIN is connected with the 2 nd PIN of the special chip U2 through the fuse F2, the positive electrode port B + of the battery is connected between the fuse F2 and the 2 nd PIN of the battery port BT PIN2, the VDD port is connected with the 1 st PIN of the special chip U2, the anode of the diode D9 is connected between the fuse F2 and the 2 nd PIN of the special chip U2, and the cathode of the diode D9 is connected between the VDD port and the 1 st PIN of the special chip U2;
the buzzer prompting module 6 at least comprises a loudspeaker SP1 and a diode D8; the positive pole and the negative pole of the loudspeaker SP1 are respectively connected with the 1 st pin and the 4 th pin of the special chip U2, the anode of the diode D8 is connected between the negative pole of the loudspeaker SP1 and the 4 th pin of the special chip U2, and the cathode of the diode D8 is connected between the positive pole of the loudspeaker SP1 and the 1 st pin of the special chip U2;
the indicator light and TEST key module 7 at least comprises a TEST port TEST PIN 3; the 1 st PIN, the 2 nd PIN and the 3 rd PIN of the TEST port TEST PIN3 are respectively connected with the 6 th PIN, the 7 th PIN and the 8 th PIN of the special chip U2;
the battery voltage detection module 8 at least comprises a resistor R11 and a resistor R12; the serial circuit of the resistor R11 and the resistor R12 has one end connected with the fuse F2 and the other end connected with the 13 th pin of the special chip U2, and the 10 th pin of the special chip U2 is connected between the resistor R11 and the resistor R12;
the output no-load detection module 9 at least comprises a resistor R9, a resistor R10, a capacitor C6 and a diode D5; one end of a series circuit of the resistor R9 and the resistor R10 and one end of the capacitor C6 are respectively connected between the resistor R5 and the cathode of the diode D5, the other end of the series circuit of the resistor R9 and the resistor R10 is connected to the 13 th pin of the dedicated chip U2, the 11 th pin of the dedicated chip U2 is connected between the resistor R9 and the resistor R10, the other end of the capacitor C6 is connected to the ground, and the resistor R5 is connected between the cathode of the diode D9 and the cathode of the diode D5;
the inverter voltage output module 10 at least comprises a rectifier transformer TR1 with model number EE 102-2, a diode D4, a load port LED Light PIN4 and an MOS tube Q2 with model number N-MOSFET; a primary terminal of the rectifier transformer TR1 is connected to the fuse F2, another primary terminal thereof is connected to the anode of the diode D5, a secondary terminal of the rectifier transformer TR1 is simultaneously connected to the 2 nd and 4 th PINs of the load port LED Light PIN4 through the diode D4, another secondary terminal thereof is simultaneously connected to the 1 st and 3 rd PINs of the load port LED Light PIN4, the D terminal of the MOS transistor Q2 is connected between the primary terminal of the rectifier transformer TR1 and the anode of the diode D5, the G terminal is connected to the 12 th PIN of the dedicated chip U2, and the S terminal is connected to the load current sampling detection module 11;
the load current sampling detection module 11 at least comprises a resistor R6, a resistor R7, a resistor R8 and a capacitor C5; the S pole of the MOS transistor Q2 is grounded through the resistor R7, one end of a parallel circuit of the resistor R6, the resistor R7 and the capacitor C5 is connected to the 9 th pin of the dedicated chip U2, the other end of the parallel circuit is connected to the 10 th pin of the dedicated chip U2 through a capacitor C7, and the resistor R8 is connected between the resistor R6 and the capacitor C5.
In the examples, it is preferred that:
the rectifier and filter module 2 at least comprises a rectifier bridge D1 with the model of MB10S and a special power supply chip U1 with the model of YTE-504;
the input voltage detection module 3 at least comprises a resistor R1, a resistor R2 and a resistor R4;
the PIN3 and the PIN4 of the rectifier bridge D1 are connected with the PIN2 and the PIN4 of the TEST port TEST PIN1 through a fuse F1, and the PIN3, the PIN1 and the PIN2 of the TEST port TEST PIN1 are connected with the anode of a diode D10 and one end of a series circuit of the resistor R1 and the resistor R4;
the D pole of the special power chip U1 is connected with the cathode of the diode D10, the CS pole is connected with the cathode of the diode D2 through a resistor R3, and the VDD pole is connected with the cathode of the diode D3;
the 1 st PIN of the TEST port TEST PIN1 is connected with the relay control module 4, one end of the resistor R2 and the other end of the series circuit of the resistor R1 and the resistor R4 are simultaneously connected with the 5 th PIN of the special chip U2, the other end of the resistor R2 is grounded, and the capacitor C1 is connected between the 1 st PIN and the 2 nd PIN of the rectifier bridge D1;
the anode of the diode D3 is connected to the cathode of the diode D7, the anode of the diode D7 and one end of the capacitor C3 are connected to the VDD port, one end of the inductor L1 is connected between the resistor R3 and the cathode of the diode D2, the other end is connected between one end of the capacitor C3 and the anode of the diode D7, one end of the capacitor C2 is connected between the VDD pole of the dedicated power chip U1 and the cathode of the diode D3, the other end is connected between one end of the inductor L1 and the resistor R3, and the anode of the diode D2 and the other end of the capacitor C3 are connected to the ground.
In the examples, it is preferred that:
the RELAY control module 4 at least comprises a RELAY RELAY J1; one end of the RELAY RELAY J1 is respectively connected with the 1 st PIN and the 2 nd PIN of the TEST port TEST PIN1, the other end of the RELAY RELAY J1 is respectively connected with the anodes of the fuse F2 and the diode D6, the collector of an NPN type triode Q1 is simultaneously connected with the cathode of the diode D6 and the anode of a zener diode ZD1, the base of the NPN type triode Q1 is connected with the 3 rd PIN and the emitter of the special chip U2 through a resistor R13 and is grounded, a resistor R15 is connected between the emitter of the NPN type triode Q1 and the base of the NPN type triode Q1, and the cathode of the zener diode ZD1 is connected with the.
In the examples, it is preferred that:
the diode D2, the diode D3, the diode D4, the diode D5 and the diode D7 at least comprise an ultrafast recovery rectifier diode with model ES 1J;
the diode D6 and the diode D10 at least comprise a rectifier diode with the model M7;
the diode D8 and the diode D9 at least comprise a model 4148 switching diode.
The invention has the beneficial effects that: the emergency lighting power supply circuit applied to the LED lamp solves the problem that the current LED lamp with the emergency lighting function needs inspectors to disassemble the LED lamp on site to perform routine inspection on the LED lamp to avoid faults and failures, so that manpower and time are wasted to a certain extent, and the conventional lighting LED lamp can actually perform emergency lighting by arranging the functional circuits such as the lithium battery, the battery protection, the on-off and the detection and the corresponding output terminals.
Drawings
Fig. 1 is a schematic block diagram of a circuit structure of a first preferred embodiment of an emergency lighting power supply circuit applied to an LED lamp according to the present invention;
fig. 2 is a schematic circuit structure diagram of a first preferred embodiment of the emergency lighting power supply circuit applied to the LED lamp of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the drawings.
Referring to fig. 1, the emergency lighting power circuit applied to the LED lamp of the present embodiment includes a main control chip module 1, a rectifying and filtering module 2, an input voltage detection module 3, a relay control module 4, a battery charging management module 5, a buzzer prompt module 6, an indicator and test key module 7, a battery voltage detection module 8, an output no-load detection module 9, an inverter voltage output module 10, and a load current sampling detection module 11; wherein, the main control chip module 1 is electrically connected with the rectification filter module 2, the input voltage detection module 3, the relay control module 4, the battery charging management module 5, the buzzer prompt module 6, the indicator lamp and the test key module 7, the battery voltage detection module 8, the output no-load detection module 9, the inversion voltage output module 10 and the load current sampling detection module 11, the rectification filter module 2 is electrically connected with the input voltage detection module 3 and the relay control module 4, the battery charging management module 5, the battery voltage detection module 8, the output no-load detection module 9, the inversion voltage output module 10 and the load current sampling detection module 11 are electrically connected in sequence.
Preferably, the inverter voltage output module 10 is in communication connection with the main control chip module 1 by adopting a Pulse Width Modulation (PWM) technology, so that the offset of the inverter voltage output module 10 is modulated according to the change of the corresponding load, thereby realizing the change of the output of the inverter voltage output module 10, further enabling the output voltage of the inverter voltage output module 10 to be kept constant when the working condition changes, and being beneficial to improving the anti-interference capability of the inverter voltage output module 10.
In this embodiment, when the circuit is connected to the power supply voltage of an external power grid, the rectifying and filtering module 2 converts alternating current whose level floats up and down at a zero point into unidirectional direct current through the unidirectional conduction characteristic of the diode and outputs the direct current to the main control chip module 1 for voltage stabilization 5V, and the input voltage detection module 3 obtains the voltage subjected to AC-DC rectifying and filtering in the rectifying and filtering module 2 for detection so as to determine the power supply voltage intensity of the current external power grid and feed back the signal information to the main control chip module 1;
after the main control chip module 1 obtains the regulated power supply input by the rectifying and filtering module 2, the battery voltage detection 8, the output no-load detection 9 and the load current sampling detection module 11 can be carried out, and when the input voltage detection module 3, the battery voltage detection 8, the output no-load detection 10 and the load current sampling detection module 11 detect faults, the fault information can be fed back to the main control chip module 1 so that the main control chip module 1 makes a buzzer prompt module 6 and an indicator lamp and test key module 7 sound for fault prompt;
the main control chip module 1 can perform charge and discharge management on the battery charge management module 5, that is, when the circuit is connected to the power supply voltage of an external power grid, the battery charge management module 5 can be controlled to charge, and if the circuit is not connected to the power supply voltage of the external power grid, the main control chip module 1 can control the battery charge management module 5 to discharge so as to meet the circuit working voltage requirement;
and when the circuit is connected to the power supply voltage of an external power grid, the rectifying and filtering module 2 can convert the alternating current of the external power grid into the direct current required by the main control chip module 1, or the main control chip module 1 can control the battery charging management module 5 to discharge to obtain the direct current so as to meet the requirement of the circuit working voltage, and then the inverter voltage output module 10 can convert the obtained direct current into the alternating voltage required by the load and stably output the alternating voltage to the load.
Preferably, this application is equipped with external plug-in type detection switch and tristimulus designation lamp external member, and the product connecting wire adopts exempts from screw wiring terminal seat.
Preferably, the indication function of the present application may be: the green light is a main electric state indicator light, the red light is a charging indicator light, the full-electricity red light is extinguished, and the yellow light is a fault indicator light; the built-in buzzer prompts and has a fault alarm function.
Therefore, the emergency lighting power supply circuit applied to the LED lamp described in the figure 1 is implemented, the problem that the current LED lamp with the emergency lighting function needs inspectors to detach the LED lamp on site to perform routine inspection on the LED lamp to avoid faults and failures, so that manpower and time are wasted to a certain extent is solved, and the conventional lighting LED lamp can actually perform emergency lighting by arranging the functional circuits such as the lithium battery, the battery protection circuit, the on-off circuit and the detection circuit and the corresponding output terminals.
In addition, the emergency lighting power supply circuit applied to the LED lamp described in fig. 1 is implemented, the inverter voltage output module and the main control chip module are in communication connection by adopting a pulse width modulation PWM technique, and then the offset of the inverter voltage output module is modulated according to the change of the corresponding load, so that the change of the output of the inverter voltage output module is realized, and then the output voltage of the inverter voltage output module can be kept constant when the working condition changes, which is beneficial to improving the anti-interference capability of the power supply circuit.
Referring to fig. 2, in the embodiment of the present invention, it is preferable that:
the main control chip module 1 at least comprises a special chip U2 with the model of YTE 1809; the 3 rd pin of the special chip U2 is connected with the relay control module 4, the 5 th pin is connected with the input voltage detection module 3 and the 14 th pin is grounded;
the battery charging management module 5 at least comprises a battery port BT PIN2, a fuse F2 and a diode D9; the 1 st PIN of the battery port BT PIN2 is grounded, the 2 nd PIN is connected with the 2 nd PIN of the special chip U2 through a fuse F2, the positive electrode port B + of the battery is connected between the fuse F2 and the 2 nd PIN of the battery port BT PIN2, the VDD port is connected with the 1 st PIN of the special chip U2, the anode of a diode D9 is connected between the fuse F2 and the 2 nd PIN of the special chip U2, and the cathode of a diode D9 is connected between the VDD port and the 1 st PIN of the special chip U2;
the buzzer prompting module 6 at least comprises a loudspeaker SP1 and a diode D8; the positive pole and the negative pole of the loudspeaker SP1 are respectively connected with the 1 st pin and the 4 th pin of the special chip U2, the anode of the diode D8 is connected between the negative pole of the loudspeaker SP1 and the 4 th pin of the special chip U2, and the cathode of the diode D8 is connected between the positive pole of the loudspeaker SP1 and the 1 st pin of the special chip U2;
the indicator light and TEST key module 7 at least comprises a TEST port TEST PIN 3; the 1 st PIN, the 2 nd PIN and the 3 rd PIN of the TEST port TEST PIN3 are respectively connected with the 6 th PIN, the 7 th PIN and the 8 th PIN of the special chip U2;
the battery voltage detection module 8 at least comprises a resistor R11 and a resistor R12; one end of a series circuit of the resistor R11 and the resistor R12 is connected with the fuse F2, the other end of the series circuit is connected with the 13 th pin of the special chip U2, and the 10 th pin of the special chip U2 is connected between the resistor R11 and the resistor R12;
the output no-load detection module 9 at least comprises a resistor R9, a resistor R10, a capacitor C6 and a diode D5; one end of a series circuit of a resistor R9 and a resistor R10 and one end of a capacitor C6 are respectively connected between the resistor R5 and the cathode of the diode D5, the other end of the series circuit of the resistor R9 and a resistor R10 is connected with the 13 th pin of the special chip U2, the 11 th pin of the special chip U2 is connected between the resistor R9 and the resistor R10, the other end of the capacitor C6 is grounded, and the resistor R5 is connected between the cathode of the diode D9 and the cathode of the diode D5;
the inverter voltage output module 10 at least comprises a rectifier transformer TR1 with the model number EE 102-2, a diode D4, a load port LED Light PIN4 and an MOS tube Q2 with the model number N-MOSFET; a primary end of the rectifier transformer TR1 is connected with a fuse F2, the other primary end is connected with an anode of a diode D5, a secondary end of the rectifier transformer TR1 is simultaneously connected with a No. 2 PIN and a No. 4 PIN of a load port LED Light PIN4 through a diode D4, the other secondary end is simultaneously connected with a No. 1 PIN and a No. 3 PIN of a load port LED Light PIN4, a D electrode of a MOS tube Q2 is connected between the primary end of the rectifier transformer TR1 and an anode of a diode D5, a G electrode is connected with a No. 12 PIN of a special chip U2, and an S electrode is connected with the load current sampling detection module 11;
the load current sampling detection module 11 at least comprises a resistor R6, a resistor R7, a resistor R8 and a capacitor C5; the S pole of the MOS transistor Q2 is grounded through a resistor R7, one end of a parallel circuit of the resistor R6, the resistor R7 and a capacitor C5 is connected with the 9 th pin of the special chip U2, the other end of the parallel circuit is connected with the 10 th pin of the special chip U2 through a capacitor C7, and the resistor R8 is connected between a resistor R6 and the capacitor C5.
In this embodiment, the battery voltage detection module 8 of the present application mainly uses a resistor-series voltage division principle, that is, after voltage division is performed by the resistor R11 and the resistor R12, a signal is taken from the voltage division resistor and sent to the operational amplifier for comparison and amplification, and then an analog signal is output to the special chip U2;
the output no-load detection module 9 also adopts a resistor series voltage division principle, namely after voltage division is carried out on the output no-load detection module through a resistor R9 and a resistor R10, a signal is taken from a voltage division resistor and sent to an operational amplifier for comparison and amplification, an analog signal is output to a special chip U2, and meanwhile, a capacitor C6 is connected to the resistor in parallel and can be used for filtering interference signals;
the special chip U2 can control the duty ratio through a high-frequency PWM pulse width modulation signal to control the bias of the MOS tube Q2 to achieve the purpose of stable output, thereby realizing the change of the output of the MOS tube Q2, further keeping the output voltage of the MOS tube Q2 constant when the working condition changes, and being beneficial to improving the anti-interference capability of a power supply circuit;
the primary coil of the rectifier transformer TR1 can be connected to the DC power supply, and the secondary coil can induce high-frequency voltage from the DC power supply and convert the DC voltage into AC voltage to supply to a load;
one end of the primary coil and one end of the secondary coil in the rectifier transformer TR1 are painted with black dots, and are marks of the same name end, and the voltage polarity of the black dot end is the same, and the voltages of the two end points are increased and decreased simultaneously;
r, C in the load current sampling detection module 11 are connected in parallel to form a low-pass filter circuit, and the low-pass filter circuit is connected to the special chip U2, so that the interference of a 50Hz power frequency signal can be effectively filtered;
and the diode D8 and the diode D9 in the battery charging management module 5 and the buzzer prompting module 6 can form a loop when a counter potential occurs in the circuit, so that the counter potential generated when the current is cut off can be effectively prevented from influencing the circuit or damaging components.
Preferably, when the power is the same, the higher the switching frequency is, the smaller the volume of the rectifier transformer TR1 is, but the higher the requirement on the MOS transistor Q2 is;
and the secondary of the MOS transistor Q2 can have multiple windings or one winding has multiple taps to obtain the required output;
and when the MOS transistor Q2 is switched on, the rectifier transformer TR1 can start to store energy, and when the MOS transistor Q2 is switched off, the rectifier transformer TR1 can start to release energy to the secondary side.
Preferably, the rectifier transformer TR1 and the MOS transistor Q2 together form a self-excited (or separately excited) intermittent oscillator, so as to modulate the input dc voltage into a high-frequency pulse voltage for energy transfer and conversion, while in the flyback circuit, when the MOS transistor Q2 is turned on, the rectifier transformer TR1 converts the electric energy into magnetic field energy for storage, and when the MOS transistor Q2 is turned off, the electric energy is released, in the forward circuit, when the MOS transistor Q2 is turned on, the input voltage is directly supplied to the load and the energy is stored in the energy storage inductor, and when the MOS transistor Q2 is turned off, the energy storage inductor performs follow current transfer to the load, so as to convert the input dc voltage into various low voltages as required.
Referring further to fig. 2, in an embodiment of the present invention, it is preferred that:
the rectifier filter module 2 at least comprises a rectifier bridge D1 with the model of MB10S and a special power supply chip U1 with the model of YTE-504;
the input voltage detection module 3 at least comprises a resistor R1, a resistor R2 and a resistor R4;
the 3 rd PIN of the rectifier bridge D1 is connected with the 2 nd PIN and the 4 th PIN of the TEST port TEST PIN1 through a fuse F1, and the 3 rd PIN, the 1 st PIN and the 2 nd PIN of the TEST port TEST PIN1 are simultaneously connected with the anode of the diode D10 and one end of a series circuit of a resistor R1 and a resistor R4;
the D pole of the special power chip U1 is connected with the cathode of the diode D10, the CS pole is connected with the cathode of the diode D2 and the VDD pole is connected with the cathode of the diode D3 through a resistor R3;
the 1 st PIN of the TEST port TEST PIN1 is connected with the relay control module 4, one end of a resistor R2 and the other end of a series circuit of the resistor R1 and the resistor R4 are simultaneously connected with the 5 th PIN of the special chip U2, the other end of the resistor R2 is grounded, and a capacitor C1 is connected between the 1 st PIN and the 2 nd PIN of the rectifier bridge D1;
the anode of the diode D3 is connected to the cathode of the diode D7, the anode of the diode D7 and one end of the capacitor C3 are connected to the VDD port, one end of the inductor L1 is connected between the cathode of the diode D2 and the resistor R3, the other end is connected between one end of the capacitor C3 and the anode of the diode D7, one end of the capacitor C2 is connected between the VDD pole of the dedicated power chip U1 and the cathode of the diode D3, the other end is connected between one end of the inductor L1 and the resistor R3, and the anode of the diode D2 and the other end of the capacitor C3 are connected to ground.
In this embodiment, the rectifier bridge D1 may utilize the one-way conductivity of the diode to convert the ac voltage into the dc voltage, so as to implement the rectifying and filtering functions of the rectifying and filtering module 2;
in addition, the residual alternating current component after rectification of the rectifier bridge D1 can be subjected to bypass backflow by utilizing the direct current-to-alternating current isolating characteristic of the capacitor, and then the capacitor C1 connected in parallel to the two ends of the rectifier bridge D1 achieves the filtering effect;
and because the output after the full-wave rectification of the rectifier bridge D1 is not a straight direct-current voltage, but a pulsating direct-current voltage with 100 pulses from zero to the maximum value and from the maximum value to zero per second, and such unstable voltage can not be used for the direct-current requirement of the post-stage circuit (except for direct-current power consumption equipment such as charging and heating), the output voltage can be stabilized to a smooth average value by utilizing the charge-discharge characteristics (high charge and low discharge) of the capacitor, and then the capacitor C1 connected in parallel on the two ends of the rectifier bridge D1 achieves the shaping effect;
and because the rectified output of the rectifier bridge D1 is pulsating, the average effective value is much lower than the original alternating voltage value, the overall efficiency is very low by subtracting the forward voltage drop of the rectifier bridge D1, and the peak charging characteristic (the voltage at two ends can reach the peak value) of the capacitor can enable the output voltage to be close to the peak value (1.414 times of the original alternating current) of the original pulsating voltage, so that the output efficiency is greatly improved, and then the capacitor C1 connected in parallel to the two ends of the rectifier bridge D1 can achieve the effect of improving the average value;
after the alternating current power supply is input into the rectifier bridge D1, the alternating current power supply can be input into the EMI filtering module 1 to filter the interference on the power grid and also filter the interference of a power failure source on the power grid;
the RC parallel circuit formed by the resistor R3 and the capacitor C2 can pass through direct current and alternating current signals, when the frequency of the input signals is less than f0, the signals are direct current relative to the circuit, and the total impedance of the circuit is equal to R1; when the frequency of the input signal is greater than f0, the capacitive reactance of the capacitor C2 is relatively small, and the total impedance is the resistance value of the resistor and is the capacitive reactance; when the frequency is high to a certain degree, the total impedance is 0;
the LC parallel resonance circuit formed by the resistor R3, the capacitor C2, the capacitor C3 and the inductor L1 can select useful frequency components from input signals to suppress useless frequency components or noise, namely noise waves existing in an external power grid are filtered, so that the interference of high-frequency pulses of the external power grid on a power supply is effectively filtered;
and the input voltage detection module 3 mainly adopts a resistor series voltage division principle, namely after voltage division is carried out through the resistor R1 and the resistor R2, a signal is taken from the voltage division resistor and sent to an operational amplifier for comparison and amplification, an analog signal is output to the special chip U2, and meanwhile, the resistor R4 is grounded, so that the counter potential can be effectively prevented from being recorded to damage the circuit.
Referring further to fig. 2, in an embodiment of the present invention, it is preferred that:
the RELAY control module 4 at least comprises a RELAY RELAY J1; one end of the RELAY J1 is respectively connected with the 1 st PIN and the 2 nd PIN of the TEST port TEST PIN1, the other end of the RELAY J1 is respectively connected with the anodes of the fuse F2 and the diode D6, the collector of the NPN type triode Q1 is simultaneously connected with the cathode of the diode D6 and the anode of the zener diode ZD1, the base of the NPN type triode Q1 is connected with the 3 rd PIN of the special chip U2 through the resistor R13 and the emitter is grounded, the resistor R15 is connected between the emitter of the NPN type triode Q1 and the base of the NPN type triode Q1, and the cathode of the zener diode ZD1 is connected with the VDD port.
In the embodiment, an NPN type triode is adopted to drive the RELAY, when the positive power supply input is 0V, the triode is cut OFF, and the RELAY RELAY J1 releases OFF; ON the contrary, when the positive power input is + VCC, the triode is saturated, and the RELAY RELAY J1 is attracted to be ON;
and diode D6 and zener diode ZD1 can control the circuit current to change more gently when the current changes suddenly or decreases, so as to avoid the generation of surge voltage and improve the use safety of the circuit.
Referring further to fig. 2, in an embodiment of the present invention, it is preferred that:
the diode D2, the diode D3, the diode D4, the diode D5 and the diode D7 at least comprise an ultrafast recovery rectifier diode with the model number ES 1J;
the diode D6 and the diode D10 at least comprise a rectifier diode with the model M7;
the diodes D8 and D9 include at least a model 4148 switching diode.
In the embodiment, the fast recovery rectifier diode can be used as a high-frequency, low-voltage and large-current rectifier, follow current and protection diode;
the switching diode can control the current of the circuit to change more smoothly when the current changes suddenly or reduces, so as to avoid the occurrence of surge voltage and improve the use safety of the segmented switching controller circuit;
and the rectifier diode can convert alternating current with alternating directions into pulse direct current with single direction by utilizing the unidirectional conductivity of the diode.
Therefore, the emergency lighting power supply circuit applied to the LED lamp described in the fig. 2 is implemented, the problem that the current LED lamp with the emergency lighting function needs inspectors to detach the LED lamp on site to perform routine inspection on the LED lamp to avoid faults and failures, so that manpower and time are wasted to a certain extent is solved, and the conventional lighting LED lamp can actually perform emergency lighting by arranging the functional circuits such as the lithium battery, the battery protection circuit, the on-off circuit and the detection circuit and the corresponding output terminals.
In addition, the emergency lighting power supply circuit applied to the LED lamp described in fig. 2 can filter frequencies except for a frequency point of a specific frequency or frequencies other than the frequency point in a power line, so that a user can obtain a power supply signal of the specific frequency, or eliminate the power supply signal after the specific frequency, and can effectively reduce the emission of disturbance voltage of a product to a power grid, thereby improving the immunity of the product, and blocking the influence of an unclean power supply of the power grid on equipment.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. The utility model provides an emergency lighting power supply circuit for LED lamp which characterized in that: the intelligent power supply system comprises a main control chip module (1), a rectification filtering module (2), an input voltage detection module (3), a relay control module (4), a battery charging management module (5), a buzzer prompt module (6), an indicator lamp and test key module (7), a battery voltage detection module (8), an output no-load detection module (9), an inverter voltage output module (10) and a load current sampling detection module (11); wherein the main control chip module (1) is electrically connected with the rectification filter module (2), the input voltage detection module (3), the relay control module (4), the battery charging management module (5), the buzzer prompt module (6), the indicator light and test key module (7), the battery voltage detection module (8), the output no-load detection module (9), the inverter voltage output module (10) and the load current sampling detection module (11), the rectification filter module (2) is electrically connected with the input voltage detection module (3) and the relay control module (4), the battery charging management module (5), the battery voltage detection module (8), the output no-load detection module (9), the inversion voltage output module (10) and the load current sampling detection module (11) are electrically connected in sequence.
2. The emergency lighting power supply circuit applied to the LED lamp according to claim 1, wherein:
the main control chip module (1) at least comprises a special chip (U2) with the model of YTE 1809; the 3 rd pin of the special chip (U2) is connected with the relay control module (4), the 5 th pin is connected with the input voltage detection module (3), and the 14 th pin is grounded;
the battery charging management module (5) at least comprises a battery port (BT PIN2), a fuse (F2) and a diode (D9); the 1 st PIN of the storage battery port (BT PIN2) is grounded, the 2 nd PIN is connected with the 2 nd PIN of the special chip (U2) through the fuse (F2), the positive electrode port (B +) of the storage battery is connected between the fuse (F2) and the 2 nd PIN of the storage battery port (BT PIN2), the VDD port is connected with the 1 st PIN of the special chip (U2), the anode of the diode (D9) is connected between the fuse (F2) and the 2 nd PIN of the special chip (U2), and the cathode of the diode (D9) is connected between the VDD port and the 1 st PIN of the special chip (U2);
the buzzer prompting module (6) at least comprises a loudspeaker (SP1) and a diode (D8); the positive pole and the negative pole of the loudspeaker (SP1) are respectively connected with the 1 st pin and the 4 th pin of the special chip (U2), the anode of the diode (D8) is connected between the negative pole of the loudspeaker (SP1) and the 4 th pin of the special chip (U2), and the cathode of the diode (D8) is connected between the positive pole of the loudspeaker (SP1) and the 1 st pin of the special chip (U2);
the indicator light and TEST key module (7) at least comprises a TEST port (TEST PIN 3); the 1 st PIN, the 2 nd PIN and the 3 rd PIN of the TEST port (TEST PIN3) are respectively connected with the 6 th PIN, the 7 th PIN and the 8 th PIN of the special chip (U2);
the battery voltage detection module (8) at least comprises a resistor (R11) and a resistor (R12); the serial circuit of the resistor (R11) and the resistor (R12) is connected with the fuse (F2) at one end and the 13 th pin of the special chip (U2) at the other end, and the 10 th pin of the special chip (U2) is connected between the resistor (R11) and the resistor (R12);
the output no-load detection module (9) at least comprises a resistor (R9), a resistor (R10), a capacitor (C6) and a diode (D5); one end of a series circuit of the resistor (R9) and the resistor (R10) and one end of the capacitor (C6) are respectively connected between a resistor (R5) and the cathode of the diode (D5), the other end of the series circuit of the resistor (R9) and the resistor (R10) is connected with the 13 th pin of the special chip (U2), the 11 th pin of the special chip (U2) is connected between the resistor (R9) and the resistor (R10), the other end of the capacitor (C6) is connected with the ground, and the resistor (R5) is connected between the cathode of the diode (D9) and the cathode of the diode (D5);
the inverter voltage output module (10) at least comprises a rectifier transformer (TR1) with the model number of EE 102-2, a diode (D4), a load port (LED Light PIN4) and an MOS (metal oxide semiconductor) tube (Q2) with the model number of N-MOSFET; a primary end of the rectifier transformer (TR1) is connected with the fuse (F2), the other primary end is connected with an anode of the diode (D5), a secondary end of the rectifier transformer (TR1) is simultaneously connected with a No. 2 PIN and a No. 4 PIN of the load port (LED Light PIN4) through the diode (D4), the other secondary end is simultaneously connected with a No. 1 PIN and a No. 3 PIN of the load port (LED Light PIN4), a D pole of the MOS tube (Q2) is connected between the primary end of the rectifier transformer (TR1) and the anode of the diode (D5), a G pole is connected with a No. 12 PIN of the special chip (U2), and an S pole is connected with the load current sampling detection module (11);
the load current sampling detection module (11) at least comprises a resistor (R6), a resistor (R7), a resistor (R8) and a capacitor (C5); the S pole of the MOS transistor (Q2) is grounded through the resistor (R7), the resistor (R6), the first end of the parallel circuit of the resistor (R7) and the capacitor (C5) is connected with the 9 th pin of the special chip (U2), the other end of the parallel circuit is connected with the 10 th pin of the special chip (U2) through the capacitor (C7), and the resistor (R8) is connected between the resistor (R6) and the capacitor (C5).
3. The emergency lighting power supply circuit applied to the LED lamp according to claim 2, wherein:
the rectifier and filter module (2) at least comprises a rectifier bridge (D1) with the model of MB10S and a special power supply chip (U1) with the model of YTE-504;
the input voltage detection module (3) at least comprises a resistor (R1), a resistor (R2) and a resistor (R4);
wherein, the 3 rd PIN of the rectifier bridge (D1) is connected with the 2 nd PIN and the 4 th PIN of the TEST port (TEST PIN1) through a fuse (F1), the 3 rd PIN, the 1 st PIN and the 2 nd PIN of the TEST port (TEST PIN1) are simultaneously connected with the anode of a diode (D10) and one end of a series circuit of the resistor (R1) and the resistor (R4);
the D pole of the special power chip (U1) is connected with the cathode of the diode (D10), the CS pole is connected with the cathode of the diode (D2) through a resistor (R3), and the VDD pole is connected with the cathode of the diode (D3);
the 1 st PIN of the TEST port (TEST PIN1) is connected with the relay control module (4), one end of the resistor (R2) and the other end of the series circuit of the resistor (R1) and the resistor (R4) are simultaneously connected with the 5 th PIN of the special chip (U2), the other end of the resistor (R2) is grounded, and the capacitor (C1) is connected between the 1 st PIN and the 2 nd PIN of the rectifier bridge (D1);
the anode of the diode (D3) is connected with the cathode of a diode (D7), the anode of the diode (D7) and one end of a capacitor (C3) are connected with the VDD port at the same time, one end of an inductor (L1) is connected between the resistor (R3) and the cathode of the diode (D2), the other end of the inductor (L3) is connected between one end of the capacitor (C3) and the anode of the diode (D7), one end of a capacitor (C2) is connected between the VDD pole of a special power chip (U1) and the cathode of the diode (D3), the other end of the capacitor (C2) is connected between one end of the inductor (L1) and the resistor (R3), and the anode of the diode (D2) and the other end of the capacitor (C3) are connected with the ground at the.
4. The emergency lighting power supply circuit applied to the LED lamp according to claim 3, wherein:
the RELAY control module (4) at least comprises a RELAY RELAY (J1); one end of the RELAY RELAY (J1) is respectively connected with the 1 st PIN and the 2 nd PIN of the TEST port (TEST PIN1), the other end of the RELAY RELAY is respectively connected with the fuse (F2) and the anode of the diode (D6), the collector of the NPN type triode (Q1) is simultaneously connected with the cathode of the diode (D6), the anode and the base of the zener diode (ZD1) are connected with the 3 rd PIN and the emitter of the special chip (U2) through a resistor (R13) to be grounded, a resistor (R15) is connected between the emitter of the NPN type triode (Q1) and the base of the NPN type triode (Q1), and the cathode of the zener diode (ZD1) is connected with the VDD port.
5. The emergency lighting power supply circuit applied to the LED lamp according to claim 4, wherein:
the diode (D2), the diode (D3), the diode (D4), the diode (D5) and the diode (D7) comprise at least an ultrafast recovery rectifier diode of type ES 1J;
the diode (D6) and the diode (D10) comprise at least a rectifier diode of type M7;
the diode (D8) and the diode (D9) comprise at least a switch diode model 4148.
CN202011032757.0A 2020-09-27 2020-09-27 Emergency lighting power supply circuit applied to LED lamp Active CN112333880B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010142190A1 (en) * 2009-06-08 2010-12-16 深圳市鑫汇科科技有限公司 Large power electromagnetic cooker circuit based on system-on-chip (soc)
CN202435657U (en) * 2011-12-15 2012-09-12 河南华阳光电照明技术有限公司 Emergency lighting system
CN104536355A (en) * 2015-01-21 2015-04-22 浙江新富凌电气股份有限公司 Servo driver with touch screen
CN205610330U (en) * 2016-03-14 2016-09-28 黄良强 Intelligent fire control emergency power source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010142190A1 (en) * 2009-06-08 2010-12-16 深圳市鑫汇科科技有限公司 Large power electromagnetic cooker circuit based on system-on-chip (soc)
CN202435657U (en) * 2011-12-15 2012-09-12 河南华阳光电照明技术有限公司 Emergency lighting system
CN104536355A (en) * 2015-01-21 2015-04-22 浙江新富凌电气股份有限公司 Servo driver with touch screen
CN205610330U (en) * 2016-03-14 2016-09-28 黄良强 Intelligent fire control emergency power source

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