CN217283476U - Lighting circuit - Google Patents

Abstract

The utility model relates to the field of lighting technology, in particular to lighting circuit, including main illumination circular telegram control module, emergent detection module, auxiliary power supply module and battery charging management module, emergent detection module leads to electric control module with main illumination respectively, auxiliary power supply module, battery charging management module and the emergent LED lamps and lanterns electricity of peripheral hardware are connected, main illumination circular telegram control module respectively with auxiliary power supply module, battery charging management module and the main illumination LED lamps and lanterns electricity of peripheral hardware are connected, auxiliary power supply module is connected with battery charging management module electricity, thereby realize when starting emergency lighting, the main lighting can break off out of work, in order to avoid the wasting of resources.

Description

Lighting circuit

Technical Field

The utility model relates to the field of lighting technology, in particular to lighting circuit.

Background

Traditional commercial or house emergency lighting, emergency lighting and main illumination are installed separately basically, perhaps main illumination does not cut off the power supply and often brightens, when treating the distribution box outage, and emergency lighting restarts, and user's lamps and lanterns purchase cost and power consumption cost can all be increased to two kinds of modes, and the installation is inconvenient, and the commonality is not strong.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: a lighting circuit is provided such that when emergency lighting is activated, the main lighting can be turned off to avoid wasting resources.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the lighting circuit comprises a main lighting power-on control module, an emergency detection module, an auxiliary power supply module and a battery charging management module, wherein the emergency detection module is respectively and electrically connected with the main lighting power-on control module, the auxiliary power supply module, the battery charging management module and an external emergency LED lamp, the main lighting power-on control module is respectively and electrically connected with the auxiliary power supply module, the battery charging management module and the external main lighting LED lamp, and the auxiliary power supply module is electrically connected with the battery charging management module.

Further, the emergency detection module includes a resistor R1, a capacitor C1, a capacitor C2, a diode D1, a lithium battery BAT and a chip IC1, a first pin of the chip IC1 is electrically connected to one end of a resistor R1, an anode of the lithium battery BAT, one end of the capacitor C2 and the battery charging management module, a second pin of the chip IC1 is electrically connected to one end of a capacitor C1, a cathode of the lithium battery BAT, the other end of the capacitor C2 and an external emergency LED lamp, a third pin of the chip IC1 is electrically connected to the external emergency LED lamp, a fourth pin of the chip IC1 is electrically connected to the other end of the capacitor C1, the main lighting power-on control module and the zero line, a fifth pin of the chip IC1 is electrically connected to a cathode and a live wire of the diode D1, and an anode of the diode D1 is electrically connected to the other end of the resistor R1.

Further, the main lighting power-on control module comprises a resistor R8, a resistor R7, a capacitor C6 and a photoelectric coupler IC4, wherein a first end of the photoelectric coupler IC4 is electrically connected with one end of the resistor R7, one end of the resistor R8 and one end of the capacitor C6 respectively, a second end of the photoelectric coupler IC4 is electrically connected with the other end of the capacitor C6 and the other end of the resistor R8 respectively, the second end of the photoelectric coupler IC4, the other end of the capacitor C6 and the other end of the resistor R8 are all grounded, a third end of the photoelectric coupler IC4 is electrically connected with the emergency detection module, and a fourth end of the photoelectric coupler IC4 is electrically connected with an external main lighting LED lamp.

Further, the auxiliary power supply module comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor RS4, a resistor RS5, a capacitor C3, a capacitor C4, a capacitor C5, a diode D4, a diode D5, an inductor L1, an electrolytic capacitor E1, an electrolytic capacitor E2 and a chip IC 3;

a first pin of the chip IC3 is electrically connected to one end of a capacitor C4, the other end of the capacitor C4 is electrically connected to one end of a resistor RS4, one end of a resistor RS5, one end of a resistor R3, one end of a capacitor C3, a cathode of a diode D4, one end of an inductor L1, one end of a capacitor C5 and a second pin of the chip IC3, a third pin of the chip IC3 is electrically connected to one end of a resistor R4 and the other end of a resistor R3, the other end of the resistor R4 is electrically connected to a cathode of a diode D5 and the other end of a capacitor C3, an anode of the diode D5 is electrically connected to the other end of the inductor L1, one end of a resistor R5, one end of an electrolytic capacitor E2 and a battery charging management module, a fourth pin of the chip IC3 is electrically connected to the other end of a resistor RS4 and the other end of a resistor RS5, and a fifth pin of the chip IC 35 3 is electrically connected to a sixth pin of the chip IC3, The seventh pin of the chip IC3, the eighth pin of the chip IC3 and one end of an electrolytic capacitor E1 are electrically connected, the other end of the electrolytic capacitor E1 is electrically connected with one end of a resistor R6, the anode of a diode D4, the other end of a resistor R5, the other end of the electrolytic capacitor E2 and the battery charging management module respectively, and the other end of the capacitor C5 is electrically connected with the other end of a resistor R6.

Further, the battery charging management module comprises a resistor R2 and a chip IC2, a first pin of the chip IC2 is electrically connected with a second pin of the chip IC2, one end of the resistor R2 and the auxiliary power supply module respectively, a third pin of the chip IC2 is electrically connected with the emergency detection module, a fourth pin of the chip IC2 is electrically connected with the auxiliary power supply module, and a fifth pin of the chip IC2 is electrically connected with the other end of the resistor R2.

The beneficial effects of the utility model reside in that:

by arranging the main lighting power-on control module, the emergency detection module, the auxiliary power supply module and the battery charging management module, the emergency detection module is respectively and electrically connected with the main lighting power-on control module, the auxiliary power supply module, the battery charging management module and the peripheral emergency LED lamp, the main lighting power-on control module is respectively and electrically connected with the auxiliary power supply module, the battery charging management module and the peripheral main lighting LED lamp, and the auxiliary power supply module is electrically connected with the battery charging management module, so that when the main lighting power-on module is normally powered on, the auxiliary power supply module works to output a direct-current constant-voltage of 5V, the 5V voltage supplies power to the main lighting power-on control module, the main lighting power-on control module normally works, the 5V voltage simultaneously supplies power to the lithium battery charging management module, the emergency detection circuit detects that the normal power is supplied, and the emergency LED lamp is not on; when the switch is disconnected and does not supply power, the auxiliary power supply module does not work, the main lighting power-on control module does not work when being disconnected, and the emergency LED lamp does not light; when the power grid distribution box is powered off or the air switch in a home is disconnected, the emergency detection module detects the impedance of other household electrical appliances on the same line through the line, and the emergency LED lamp works to light up, so that the main lighting can be disconnected and does not work when the emergency lighting is started, and the resource waste is avoided.

Drawings

Fig. 1 is a block diagram illustrating a module connection of a lighting circuit according to the present invention;

fig. 2 is a schematic circuit diagram of a main lighting energization control module, an emergency detection module, an emergency LED lamp and a main lighting LED lamp of a lighting circuit according to the present invention;

fig. 3 is a schematic circuit diagram of an auxiliary power supply module and a battery charging management module of a lighting circuit according to the present invention;

description of the reference symbols:

1. a main lighting electrification control module; 2. an emergency detection module; 3. an auxiliary power supply module; 4. a battery charging management module; 5. an emergency LED lamp; 6. main illumination LED lamps and lanterns.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1, the technical solution provided by the present invention is:

the utility model provides a lighting circuit, includes main illumination and leads to electric control module, emergent detection module, supplementary power module and battery charging management module, emergent detection module leads to electric control module, supplementary power module, battery charging management module and the emergent LED lamps and lanterns electricity of peripheral hardware with main illumination respectively and is connected, main illumination leads to electric control module and is connected with the main illumination LED lamps and lanterns electricity of supplementary power module, battery charging management module and peripheral hardware respectively, supplementary power module is connected with battery charging management module electricity.

From the above description, the beneficial effects of the present invention are:

by arranging the main lighting power-on control module, the emergency detection module, the auxiliary power supply module and the battery charging management module, the emergency detection module is respectively and electrically connected with the main lighting power-on control module, the auxiliary power supply module, the battery charging management module and an external emergency LED lamp, the main lighting power-on control module is respectively and electrically connected with the auxiliary power supply module, the battery charging management module and the external main lighting LED lamp, and the auxiliary power supply module is electrically connected with the battery charging management module, so that when the emergency lighting power-on module is normally powered on, the auxiliary power supply module works to output a direct-current constant-voltage of 5V, the 5V voltage supplies power to the main lighting power-on control module, the main lighting power-on control module normally works, the 5V voltage simultaneously supplies power to the lithium battery charging management module, the emergency detection circuit detects that the normal power is supplied, and the emergency LED lamp is not bright; when the switch is disconnected and does not supply power, the auxiliary power supply module does not work, the main lighting power-on control module does not work when being disconnected, and the emergency LED lamp does not light; when the power distribution box of the power grid is powered off or the air switch in a home is disconnected, the emergency detection module detects the impedance of other household electrical appliances of the same line through the line, and the emergency LED lamp works and lights up, so that the main lighting can be disconnected and does not work when the emergency lighting is started, and the resource waste is avoided.

Further, the emergency detection module includes a resistor R1, a capacitor C1, a capacitor C2, a diode D1, a lithium battery BAT and a chip IC1, a first pin of the chip IC1 is electrically connected to one end of a resistor R1, an anode of the lithium battery BAT, one end of the capacitor C2 and the battery charging management module, a second pin of the chip IC1 is electrically connected to one end of a capacitor C1, a cathode of the lithium battery BAT, the other end of the capacitor C2 and an external emergency LED lamp, a third pin of the chip IC1 is electrically connected to the external emergency LED lamp, a fourth pin of the chip IC1 is electrically connected to the other end of the capacitor C1, the main lighting power-on control module and the zero line, a fifth pin of the chip IC1 is electrically connected to a cathode and a live wire of the diode D1, and an anode of the diode D1 is electrically connected to the other end of the resistor R1.

From the above description, the level conversion of the EN pin of the chip IC1 can be realized according to the impedance state between the zero line and the live line, when 85VAC-265VAC voltage is normally input between the zero line and the live line, the internal switch tube is cut off, the EN pin of the chip IC1 outputs low level, and the emergency LED lamp is not on; when the impedance between the zero line and the live line is larger than 300k omega, the internal switching tube is cut off, the EN pin of the chip IC1 outputs low level, and the emergency LED lamp is not on; only when the impedance between the zero line and the live line is less than 300k omega, the EN pin of the chip IC1 outputs high level, and the emergency LED lamp is turned on.

Further, the main lighting power-on control module comprises a resistor R8, a resistor R7, a capacitor C6 and a photoelectric coupler IC4, wherein a first end of the photoelectric coupler IC4 is electrically connected with one end of the resistor R7, one end of the resistor R8 and one end of the capacitor C6 respectively, a second end of the photoelectric coupler IC4 is electrically connected with the other end of the capacitor C6 and the other end of the resistor R8 respectively, the second end of the photoelectric coupler IC4, the other end of the capacitor C6 and the other end of the resistor R8 are all grounded, a third end of the photoelectric coupler IC4 is electrically connected with the emergency detection module, and a fourth end of the photoelectric coupler IC4 is electrically connected with a peripheral main lighting LED lamp.

As can be seen from the above description, when the auxiliary power supply terminal outputs a high level, the photodiode inside the photocoupler IC4 is forward-turned on to emit a light signal, and the triac inside the photocoupler IC4 receives a signal to be turned on. The resistor R7 and the resistor R8 play a role in voltage division, and the capacitor C6 plays a role in filtering.

Further, the auxiliary power supply module comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor RS4, a resistor RS5, a capacitor C3, a capacitor C4, a capacitor C5, a diode D4, a diode D5, an inductor L1, an electrolytic capacitor E1, an electrolytic capacitor E2 and a chip IC 3;

a first pin of the chip IC3 is electrically connected to one end of a capacitor C4, the other end of the capacitor C4 is electrically connected to one end of a resistor RS4, one end of a resistor RS5, one end of a resistor R3, one end of a capacitor C3, a cathode of a diode D4, one end of an inductor L1, one end of a capacitor C5 and a second pin of the chip IC3, a third pin of the chip IC3 is electrically connected to one end of a resistor R4 and the other end of a resistor R3, the other end of the resistor R4 is electrically connected to a cathode of a diode D5 and the other end of a capacitor C3, an anode of the diode D5 is electrically connected to the other end of an inductor L1, one end of a resistor R5, one end of an electrolytic capacitor E2 and a battery charging management module, a fourth pin of the chip IC3 is electrically connected to the other end of a resistor RS4 and the other end of a resistor RS5, and a fifth pin of the chip IC 35 3 is electrically connected to the chip IC3, The seventh pin of the chip IC3, the eighth pin of the chip IC3 and one end of an electrolytic capacitor E1 are electrically connected, the other end of the electrolytic capacitor E1 is electrically connected with one end of a resistor R6, the anode of a diode D4, the other end of a resistor R5, the other end of the electrolytic capacitor E2 and the battery charging management module respectively, and the other end of the capacitor C5 is electrically connected with the other end of a resistor R6.

It can be known from the above description that the resistor RS3 and the resistor RS4 are provided for abnormal overcurrent detection setting, the resistor R3, the resistor R4, the diode D5 and the capacitor C3 form a feedback circuit, the output voltage can be set, the inductor L1 sets the operating frequency, the diode D4 is a freewheeling diode and provides a discharge loop for the inductor L1, the capacitor C5 and the resistor R6 form an RC absorption circuit, and the electrolytic capacitor E1 and the electrolytic capacitor E2 are used for input and output filtering.

Further, the battery charging management module comprises a resistor R2 and a chip IC2, a first pin of the chip IC2 is electrically connected with a second pin of the chip IC2, one end of the resistor R2 and the auxiliary power supply module respectively, a third pin of the chip IC2 is electrically connected with the emergency detection module, a fourth pin of the chip IC2 is electrically connected with the auxiliary power supply module, and a fifth pin of the chip IC2 is electrically connected with the other end of the resistor R2.

As can be seen from the above description, when the voltage of the lithium battery is lower than 2.4V, the charging enters the trickle charging mode and the charging current is set to 1/10, when the voltage of the battery is higher than 2.4V, the charging enters the full current constant current charging mode, when the BAT pin voltage reaches the float voltage of 3.6V, the charging enters the constant voltage charging mode and the charging current starts to decrease, and when the charging current is lower than the current set value of 1/10, the charging cycle ends. The magnitude of the charging current is set by the resistance between the PROG pin and ground.

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is:

referring to fig. 1, the lighting circuit includes a main lighting power-on control module 1, an emergency detection module 2, an auxiliary power supply module 3, and a battery charging management module 4, where the emergency detection module 2 is respectively electrically connected to the main lighting power-on control module 1, the auxiliary power supply module 3, the battery charging management module 4, and an external emergency LED lamp 5, the main lighting power-on control module 1 is respectively electrically connected to the auxiliary power supply module 3, the battery charging management module 4, and the external main lighting LED lamp 6, and the auxiliary power supply module 3 is electrically connected to the battery charging management module 4.

Referring to fig. 2, the emergency detection module 2 includes a resistor R1 (a chip resistor), a capacitor C1 (a chip capacitor), a capacitor C2 (a chip capacitor), a diode D1 (a chip diode), a lithium battery BAT (model 18650), and a chip IC1 (model QW2882), a first pin of the chip IC1 is electrically connected to one end of the resistor R1, an anode of the lithium battery BAT, one end of the capacitor C2, and the battery charging management module 4, a second pin of the chip IC1 is electrically connected to one end of the capacitor C1, a cathode of the lithium battery BAT, another end of the capacitor C2, and the external emergency LED lamp 5, a third pin of the chip IC1 is electrically connected to the external emergency LED lamp 5, a fourth pin of the chip IC1 is electrically connected to the other end of the capacitor C1, the main lighting conduction control module 1, and a neutral line, a fifth pin of the chip IC1 is electrically connected to a cathode of the diode D1, the anode of the diode D1 is electrically connected to the other end of the resistor R1.

Referring to fig. 2, the main lighting energization control module 1 includes a resistor R8 (which is a chip resistor), a resistor R7 (which is a chip resistor), a capacitor C6 (which is a chip capacitor), and a photo-coupler IC4 (which is an HSCR-3213D), wherein a first end of the photo-coupler IC4 is electrically connected to one end of the resistor R7, one end of the resistor R8, and one end of the capacitor C6, a second end of the photo-coupler IC4 is electrically connected to the other end of the capacitor C6 and the other end of the resistor R8, a second end of the photo-coupler IC4, the other end of the capacitor C6, and the other end of the resistor R8 are all grounded, a third end of the photo-coupler IC4 is electrically connected to the emergency detection module 2, and a fourth end of the photo-coupler IC4 is electrically connected to an external main lighting LED lamp 6.

Referring to fig. 3, the auxiliary power supply module 3 includes a resistor R3 (a chip resistor), a resistor R4 (a chip resistor), a resistor R5 (a chip resistor), a resistor R6 (a chip resistor), a resistor RS4 (a chip resistor), a resistor RS5 (a chip resistor), a capacitor C3 (a chip capacitor), a capacitor C4 (a chip capacitor), a capacitor C5 (a chip capacitor), a diode D4 (a chip diode), a diode D5 (a chip diode), an inductor L1, an electrolytic capacitor E1, an electrolytic capacitor E2, and a chip IC3 (model number KP 15052);

a first pin of the chip IC3 is electrically connected to one end of a capacitor C4, the other end of the capacitor C4 is electrically connected to one end of a resistor RS4, one end of a resistor RS5, one end of a resistor R3, one end of a capacitor C3, a cathode of a diode D4, one end of an inductor L1, one end of a capacitor C5 and a second pin of the chip IC3, a third pin of the chip IC3 is electrically connected to one end of a resistor R4 and the other end of a resistor R3, the other end of the resistor R4 is electrically connected to a cathode of a diode D5 and the other end of a capacitor C3, an anode of the diode D5 is electrically connected to the other end of the inductor L1, one end of a resistor R5, one end of an electrolytic capacitor E2 and the battery charging management module 4, a fourth pin of the chip IC3 is electrically connected to the other end of a resistor RS3 and the other end of the resistor RS3, and a fifth pin of the chip IC3 are electrically connected to a sixth pin of the chip IC3, The seventh pin of the chip IC3, the eighth pin of the chip IC3 and one end of an electrolytic capacitor E1 are electrically connected, the other end of the electrolytic capacitor E1 is electrically connected with one end of a resistor R6, the anode of a diode D4, the other end of a resistor R5, the other end of the electrolytic capacitor E2 and the battery charging management module 4 respectively, and the other end of the capacitor C5 is electrically connected with the other end of a resistor R6.

Referring to fig. 3, the battery charging management module 4 includes a resistor R2 (which is a chip resistor) and a chip IC2 (which is model number ME4075), a first pin of the chip IC2 is electrically connected to a second pin of the chip IC2, one end of the resistor R2 and the auxiliary power supply module 3, a third pin of the chip IC2 is electrically connected to the emergency detection module 2, a fourth pin of the chip IC2 is electrically connected to the auxiliary power supply module 3, and a fifth pin of the chip IC2 is electrically connected to the other end of the resistor R2.

The working principle of the lighting circuit is as follows:

the EN pin level conversion of the chip IC1 can be realized according to the impedance state between the zero line and the live line, when 85VAC-265VAC voltage is normally input between the zero line and the live line, the internal switch tube is cut off, the EN pin of the chip IC1 outputs low level, and the emergency LED lamp 5 is not on; when the impedance between the zero line and the live line is larger than 300k omega, the internal switching tube is cut off, the EN pin of the chip IC1 outputs low level, and the emergency LED lamp 5 is not on; only when the impedance between the zero line and the live line is smaller than 300k omega, the EN pin of the chip IC1 outputs high level, and the emergency LED lamp 5 is turned on.

When the control end is increased in high level, the photosensitive diode in the photoelectric coupler IC4 is conducted in the forward direction to emit light signals, and the bidirectional thyristor in the photoelectric coupler IC4 receives the signals and is conducted. The resistor R7 and the resistor R8 play a role of voltage division, and the capacitor C6 plays a role of filtering.

The resistor RS3 and the resistor RS4 are arranged for setting of abnormal overcurrent detection, the resistor R3, the resistor R4, the diode D5 and the capacitor C3 form a feedback circuit, the output voltage can be set, the inductor L1 sets the working frequency, the diode D4 is a freewheeling diode and provides a discharge loop for the inductor L1, the capacitor C5 and the resistor R6 form an RC absorption circuit, and the electrolytic capacitor E1 and the electrolytic capacitor E2 are used for input and output filtering.

To sum up, the lighting circuit provided by the present invention is provided with a main lighting power-on control module, an emergency detection module, an auxiliary power supply module and a battery charging management module, wherein the emergency detection module is electrically connected to the main lighting power-on control module, the auxiliary power supply module, the battery charging management module and an external emergency LED lamp respectively, the main lighting power-on control module is electrically connected to the auxiliary power supply module, the battery charging management module and the external main lighting LED lamp respectively, the auxiliary power supply module is electrically connected to the battery charging management module, such that when the lighting circuit is normally powered on, the auxiliary power supply module outputs a constant voltage dc 5V, the constant voltage dc 5V is supplied to the main lighting power-on control module, the main lighting power-on control module normally works, the constant voltage 5V simultaneously supplies power to the lithium battery charging management module, the emergency detection circuit detects the normal power supply, the emergency LED lamp is not on; when the switch is disconnected and does not supply power, the auxiliary power supply module does not work, the main lighting power-on control module does not work when being disconnected, and the emergency LED lamp does not light; when the power grid distribution box is powered off or the air switch in a home is disconnected, the emergency detection module detects the impedance of other household electrical appliances on the same line through the line, and the emergency LED lamp works to light up, so that the main lighting can be disconnected and does not work when the emergency lighting is started, and the resource waste is avoided.

The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims (5)

1. The lighting circuit is characterized by comprising a main lighting power-on control module, an emergency detection module, an auxiliary power supply module and a battery charging management module, wherein the emergency detection module is respectively and electrically connected with the main lighting power-on control module, the auxiliary power supply module, the battery charging management module and an external emergency LED lamp, the main lighting power-on control module is respectively and electrically connected with the auxiliary power supply module, the battery charging management module and the external main lighting LED lamp, and the auxiliary power supply module is electrically connected with the battery charging management module.

2. The lighting circuit of claim 1, wherein the emergency detection module comprises a resistor R1, a capacitor C1, a capacitor C2, a diode D1, a lithium battery BAT, and a chip IC1, the first pin of the chip IC1 is electrically connected with one end of the resistor R1, the anode of the lithium battery BAT, one end of the capacitor C2 and the battery charging management module respectively, a second pin of the chip IC1 is respectively and electrically connected with one end of a capacitor C1, the negative electrode of the lithium battery BAT, the other end of the capacitor C2 and an external emergency LED lamp, a third pin of the chip IC1 is electrically connected with an external emergency LED lamp, a fourth pin of the chip IC1 is respectively and electrically connected with the other end of the capacitor C1, the main lighting electrification control module and the zero line, the fifth pin of the chip IC1 is electrically connected to the cathode and the hot wire of the diode D1, and the anode of the diode D1 is electrically connected to the other end of the resistor R1.

3. The lighting circuit according to claim 1, wherein the main lighting power-on control module comprises a resistor R8, a resistor R7, a capacitor C6 and a photo-coupler IC4, a first end of the photo-coupler IC4 is electrically connected with one end of a resistor R7, one end of a resistor R8 and one end of a capacitor C6 respectively, a second end of the photo-coupler IC4 is electrically connected with the other end of a capacitor C6 and the other end of the resistor R8 respectively, a second end of the photo-coupler IC4, the other end of the capacitor C6 and the other end of a resistor R8 are all grounded, a third end of the photo-coupler IC4 is electrically connected with the emergency detection module, and a fourth end of the photo-coupler IC4 is electrically connected with an external main lighting LED lamp.

4. The lighting circuit according to claim 1, wherein the auxiliary power supply module comprises a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor RS4, a resistor RS5, a capacitor C3, a capacitor C4, a capacitor C5, a diode D4, a diode D5, an inductor L1, an electrolytic capacitor E1, an electrolytic capacitor E2 and a chip IC 3;

a first pin of the chip IC3 is electrically connected to one end of a capacitor C4, the other end of the capacitor C4 is electrically connected to one end of a resistor RS4, one end of a resistor RS5, one end of a resistor R3, one end of a capacitor C3, a cathode of a diode D4, one end of an inductor L1, one end of a capacitor C5 and a second pin of the chip IC3, a third pin of the chip IC3 is electrically connected to one end of a resistor R4 and the other end of a resistor R3, the other end of the resistor R4 is electrically connected to a cathode of a diode D5 and the other end of a capacitor C3, an anode of the diode D5 is electrically connected to the other end of an inductor L1, one end of a resistor R5, one end of an electrolytic capacitor E2 and a battery charging management module, a fourth pin of the chip IC3 is electrically connected to the other end of a resistor RS4 and the other end of a resistor RS5, and a fifth pin of the chip IC 35 3 is electrically connected to the chip IC3, The seventh pin of the chip IC3, the eighth pin of the chip IC3 and one end of an electrolytic capacitor E1 are electrically connected, the other end of the electrolytic capacitor E1 is electrically connected with one end of a resistor R6, the anode of a diode D4, the other end of a resistor R5, the other end of the electrolytic capacitor E2 and the battery charging management module respectively, and the other end of the capacitor C5 is electrically connected with the other end of a resistor R6.

5. The lighting circuit according to claim 1, wherein the battery charging management module comprises a resistor R2 and a chip IC2, a first pin of the chip IC2 is electrically connected to a second pin of the chip IC2, one end of the resistor R2 and the auxiliary power supply module, respectively, a third pin of the chip IC2 is electrically connected to the emergency detection module, a fourth pin of the chip IC2 is electrically connected to the auxiliary power supply module, and a fifth pin of the chip IC2 is electrically connected to the other end of the resistor R2.

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