CN211860603U - Lamp emergency module - Google Patents
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- CN211860603U CN211860603U CN202020288480.7U CN202020288480U CN211860603U CN 211860603 U CN211860603 U CN 211860603U CN 202020288480 U CN202020288480 U CN 202020288480U CN 211860603 U CN211860603 U CN 211860603U
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Abstract
The utility model is suitable for a lighting circuit technical field provides a lamps and lanterns emergency module, include: the emergency power supply circuit, the emergency control circuit and the emergency light source circuit; the emergency power supply circuit converts commercial power into battery voltage to supply power for the emergency control circuit and the emergency light source circuit; the emergency control circuit generates a PWM signal when detecting that the impedance of the two ends of the commercial power zero line and the commercial power live line is smaller than a threshold value, and sends the PWM signal to the emergency light source circuit; and the emergency light source circuit controls the on and off of the emergency light source according to the PWM signal. The utility model provides a lamps and lanterns emergency module can the direct mount in various lamps and lanterns, and need not to change the drive circuit and the light source lamp pearl of original lamps and lanterns, makes the automatic luminous of emergency light source under the condition that the power failure appears in the commercial power, conveniently plays emergency lighting's effect.
Description
Technical Field
The utility model belongs to the technical field of lighting circuit, especially, relate to a lamps and lanterns emergency module.
Background
The existing lamp powered by mains supply can only realize the function of lighting when the mains supply is normal, and can stop lighting immediately when power failure occurs, so that inconvenience is brought to users, and accidents can be caused by sudden lighting loss under special environments such as production workshops, and the safety of the users is endangered.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a lamp emergency module to solve the problem that the lamp in the prior art cannot illuminate under the condition of power failure.
The utility model provides a first aspect of the embodiment provides a lamps and lanterns emergency module, include: the emergency power supply circuit, the emergency control circuit and the emergency light source circuit;
the input end of the emergency power supply circuit and the alternating current input impedance detection end of the emergency control circuit are respectively connected with a mains supply; the output end of the emergency power supply circuit is respectively connected with the input end of the emergency control circuit and the voltage input end of the emergency light source circuit; the output end of the emergency control circuit is connected with the signal input end of the emergency light source circuit;
the emergency power supply circuit converts the commercial power into battery voltage and provides the battery voltage for the emergency control circuit and the emergency light source circuit;
the emergency control circuit generates a PWM signal when the alternating current input impedance detection end detects that the impedance at two ends of a commercial power zero line is smaller than a threshold value, and sends the PWM signal to the emergency light source circuit;
and the emergency light source circuit controls the on and off of the emergency light source according to the PWM signal.
In an embodiment of the present invention, the emergency power supply circuit includes a constant voltage circuit and a battery management circuit;
the input end of the constant voltage circuit is the input end of the emergency power supply circuit, and the output end of the constant voltage circuit is connected with the input end of the battery management circuit; the output end of the battery management circuit is the output end of the emergency power supply circuit;
the constant voltage circuit converts commercial power into constant voltage and provides the constant voltage for the battery management circuit;
the battery management circuit converts the constant voltage to the battery voltage and provides the battery voltage to the emergency control circuit and the emergency light source circuit.
In an embodiment of the present invention, the constant voltage circuit includes a rectifier bridge circuit for converting the ac voltage of the utility power into the dc voltage, a filter circuit for filtering the dc voltage, and a constant voltage chip circuit for converting the filtered dc voltage into the constant voltage;
a first alternating current input end of the rectifier bridge circuit is connected with the live wire of the commercial power, a second alternating current input end of the rectifier bridge circuit is connected with the zero line of the commercial power, a first direct current output end of the rectifier bridge circuit is connected with the input end of the filter circuit, and a second direct current output end of the rectifier bridge circuit is grounded; the output end of the filter circuit is connected with the input end of the constant voltage chip circuit, and the output end of the constant voltage chip circuit is the output end of the constant voltage circuit.
In one embodiment of the present invention, the battery management circuit includes a battery management chip, a battery pack, and a thermistor;
a voltage input pin of the battery management chip is connected with a voltage input end of the battery management circuit; the positive pole of the battery pack is used as the voltage output end of the battery management circuit and is connected with the battery voltage detection pin of the battery management chip, and the negative pole of the battery pack is grounded; the first end of the thermistor is connected with a battery temperature detection input pin of the battery management chip, and the second end of the thermistor is grounded.
In an embodiment of the present invention, the lamp emergency module further comprises a first normally closed switch;
the first normally-closed switch is connected in series between the positive electrode of the battery pack and a battery voltage detection pin of the battery management chip.
In an embodiment of the present invention, the battery management circuit further comprises a charging indicator light;
the charging indicator light is connected between the voltage input pin and the status pin of the battery management chip.
In an embodiment of the present invention, the ac input impedance detection end of the emergency control circuit includes a first impedance detection end and a second impedance detection end, the first impedance detection end is connected to the zero line of the utility power, and the second impedance detection end is connected to the live line of the utility power; the emergency control circuit comprises an emergency chip; the emergency chip comprises a zero line detection pin and a live line detection pin;
the zero line detection pin is connected with a first impedance detection end of the emergency control circuit, and the live line detection pin is connected with a second impedance detection end of the emergency control circuit; the voltage input end of the emergency chip is connected with the voltage input end of the emergency control circuit; and an enabling pin of the emergency chip is an output end of the emergency control circuit.
In an embodiment of the present invention, the lamp emergency module further includes a first normally open switch for performing a power failure test;
the first end of the first normally-open switch is connected with the zero line detection pin of the emergency chip, and the second end of the first normally-open switch is connected with the live line detection pin of the emergency chip.
In an embodiment of the present invention, the emergency light source circuit includes a boost chip and an emergency light string;
the voltage input end of the boosting chip is connected with the voltage input end of the emergency light source circuit; the signal input end of the boosting chip is connected with the signal input end of the emergency light source circuit; the output end of the boosting chip is connected with the anode of the emergency lamp string; the negative pole of the emergency lamp string is grounded.
The utility model provides a lamp, which comprises a lamp module and the lamp emergency module, wherein the lamp module and the lamp emergency module are both connected with the mains supply;
the lamp module is used for receiving commercial power to generate a light source;
the lamp emergency module is used for charging and storing energy according to received mains supply and generating an emergency light source when the impedance at two ends of a mains supply zero line and a mains supply live line is smaller than a threshold value.
Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: the utility model provides a lamps and lanterns emergency module, include: the emergency power supply circuit, the emergency control circuit and the emergency light source circuit; the emergency power supply circuit converts commercial power into battery voltage to supply power for the emergency control circuit and the emergency light source circuit; the emergency control circuit generates a PWM signal when the detected impedance of the two ends of the zero live wire of the mains supply is smaller than a threshold value, and sends the PWM signal to the emergency light source circuit; and the emergency light source circuit controls the on and off of the emergency light source according to the PWM signal. The utility model provides a lamps and lanterns emergency module can the direct mount in various lamps and lanterns, and need not to change the drive circuit and the light source lamp pearl of original lamps and lanterns, makes the automatic luminous of emergency light source under the condition that the power failure appears in the commercial power, conveniently plays emergency lighting's effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a block diagram of a lamp emergency module provided in an embodiment of the present invention;
fig. 2 is a circuit diagram of a constant voltage circuit according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a battery management circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of an emergency control circuit provided by an embodiment of the present invention;
fig. 5 is a circuit diagram of an emergency light source circuit provided by an embodiment of the present invention;
fig. 6 is a circuit diagram of a three-gear dial switch according to an embodiment of the present invention;
fig. 7 is a schematic block diagram of a lamp provided in an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Referring to fig. 1, a first aspect of the embodiments of the present invention provides a lamp emergency module 20, including:
the emergency power supply circuit 100, the emergency control circuit 200 and the emergency light source circuit 300;
the input end of the emergency power supply circuit 100 and the alternating current input impedance detection end of the emergency control circuit 200 are respectively connected with the mains supply; the output end of the emergency power supply circuit 100 is respectively connected with the input end of the emergency control circuit 200 and the voltage input end of the emergency light source circuit 300; the output end of the emergency control circuit 200 is connected with the signal input end of the emergency light source circuit 300;
the emergency power supply circuit 100 converts the commercial power into a battery voltage, and provides the battery voltage for the emergency control circuit 200 and the emergency light source circuit 300;
the emergency control circuit 200 generates a PWM signal when the AC input impedance detection end detects that the impedance at two ends of the commercial power zero line and the commercial power live line is smaller than a threshold value, and sends the PWM signal to the emergency light source circuit 300;
the emergency light source circuit 300 controls the on and off of the emergency light source according to the PWM signal.
Specifically, the threshold value of the impedance at two ends of the zero live line of the commercial power is 500K ohms.
In this embodiment, under the condition that the utility power is normal, the utility power supplies power to the emergency power supply circuit 100, so that the emergency power supply circuit 100 charges and stores energy; the emergency power supply circuit 100 supplies power to the emergency control circuit 200 and the emergency light source circuit 300; when the mains supply is powered off, the alternating current input impedance detection end of the emergency control circuit 200 detects that the impedance of two ends of a zero line and a live line of the mains supply is smaller than 500K ohms, at the moment, the emergency control circuit 200 generates a PWM signal and sends the PWM signal to the emergency light source circuit 300, and the emergency light source circuit 300 emits light under the driving of the PWM signal; when the commercial power returns to normal, the ac input impedance detection end of the emergency control circuit 200 detects that the impedance at the two ends of the commercial power zero line is greater than 500K ohms, the emergency control circuit 200 stops generating the PWM signal, and the emergency light source circuit 300 stops receiving the PWM signal to stop emitting light.
In one embodiment of the present invention, the emergency power supply circuit 100 includes a constant voltage circuit and a battery management circuit;
as shown in fig. 2, fig. 2 shows a circuit schematic of the constant voltage circuit, which is detailed as follows:
the input end of the constant voltage circuit is the input end of the emergency power supply circuit 100, and the output end of the constant voltage circuit is connected with the input end of the battery management circuit; the output end of the battery management circuit is the output end of the emergency power supply circuit 100;
the constant voltage circuit converts the commercial power into constant voltage and provides the constant voltage for the battery management circuit;
the battery management circuit converts the constant voltage into a battery voltage and provides the battery voltage to the emergency control circuit 200 and the emergency light source circuit 300.
In an embodiment of the present invention, the constant voltage circuit includes a rectifier bridge circuit BD1 for converting the commercial power from ac voltage to dc voltage, a filter circuit for filtering the dc voltage, and a constant voltage chip circuit for converting the filtered dc voltage into constant voltage;
a first alternating current input end of the rectifier bridge circuit BD1 is connected with a live wire of a commercial power, a second alternating current input end of the rectifier bridge circuit BD1 is connected with a zero line of the commercial power, a first direct current output end of the rectifier bridge circuit BD1 is connected with an input end of the filter circuit, and a second direct current output end of the rectifier bridge circuit BD1 is grounded; the output end of the filter circuit is connected with the input end of the constant voltage chip circuit, and the output end of the constant voltage chip circuit is the output end of the constant voltage circuit.
In this embodiment, the filter circuit includes a first capacitor C1, a second capacitor C2, a first resistor R1, and a first inductor L1; the constant-voltage chip circuit comprises a constant-voltage chip U1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a second inductor L2, a third capacitor C3, a fourth capacitor C4, a first diode D1 and a second diode D2.
Specifically, a live wire of the commercial power is connected with a first alternating current input end of a rectifier bridge circuit BD1 through a fuse FR1, and a null wire of the commercial power is connected with a second alternating current input end of the rectifier bridge circuit BD 1; a first direct current output end of the rectifier bridge circuit BD1 is connected with an input end of the filter circuit; the second dc output terminal of the rectifier bridge circuit BD1 is connected to ground.
An input end of the filter circuit is respectively connected with a first end of a first inductor L1, a first end of a first resistor R1 and a first end of a first capacitor C1, and a second end of the first inductor L1, a second end of the first resistor R1 and a first end of a second capacitor C2 are respectively connected with an output end of the filter circuit; the second terminal of the first capacitor C1 and the second terminal of the second capacitor C2 are commonly grounded.
The input end of the constant-voltage chip circuit is connected with a Drain pin of the constant-voltage chip U1, a VDD pin of the constant-voltage chip U1 is grounded, a GND pin is grounded through a second resistor R2, an FB pin is connected with a first end of a third resistor R3 and a first end of a fourth resistor R4, and a CS pin of the constant-voltage chip U1 is connected with a second end of the fourth resistor R4, a first end of a third capacitor C3 and the cathode of a second diode D2; a second terminal of the fourth resistor R4 and a second terminal of the third capacitor C3 are connected to the first terminal of the second inductor L2 and the cathode of the first diode D1. The anode of the second diode D2, the second end of the second inductor L2, the first end of the fourth capacitor C4, and the first end of the fifth resistor R5 are commonly connected to the output terminal of the constant voltage chip circuit. The anode D1 of the first diode, the second terminal of the fourth capacitor C4, and the second terminal of the fifth resistor R5 are commonly grounded.
In the present embodiment, the constant voltage circuit converts the wide voltage commercial power of 100V to 240V into a constant direct current voltage of 5V.
In an embodiment of the present invention, referring to fig. 3, fig. 3 shows a circuit schematic diagram of a battery management circuit, which is detailed as follows:
the battery management circuit comprises a battery management chip U2, a battery pack BAT and a thermistor NTC;
a voltage input pin of the battery management chip U2 is connected with a voltage input end of the battery management circuit; the positive electrode of the battery pack BAT is used as the voltage output end of the battery management circuit and is connected with the battery voltage detection pin of the battery management chip U2, and the negative electrode of the battery pack BAT is grounded; the first end of the thermistor NTC is connected with the battery temperature detection input pin of the battery management chip U2, and the second end of the thermistor NTC is grounded.
In an embodiment of the present invention, the lamp emergency module further comprises a first normally closed switch P3;
referring to fig. 6, a first normally-closed switch P3 is connected in series between the positive electrode of the battery pack BAT and the battery voltage detection pin of the battery management chip U2.
In an embodiment of the present invention, the battery management circuit further includes a charging indicator light LED;
the charge indicator LED is connected between the voltage input pin and the status pin of the battery management chip U2.
In the present embodiment, referring to fig. 3, the battery management circuit includes a battery management chip U2, a battery pack BAT, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a thermistor NTC, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a third inductor L3, a third diode D3, and a light emitting diode LED.
Specifically, the voltage input terminal of the battery management circuit is connected to the first terminal of the third inductor L3, the first terminal of the fifth capacitor C5, the first terminal of the sixth resistor R6, and the VIN pin of the battery management chip U2. The AGND pin of the battery management chip U2 is connected to the second terminal of the fifth capacitor C5 and grounded. The LX pin of the battery management chip U2 is connected to the second terminal of the third inductor L3 and the anode of the third diode D3. The VBS pin of the battery management chip U2 is connected to the cathode of the third diode D3 and the first terminal of the sixth capacitor C6, and the second terminal of the sixth capacitor C6 is grounded. The BAT pin of the battery management chip is connected with the first end of the seventh capacitor C7 and the voltage output end BAT + of the battery management circuit, and the second end of the seventh capacitor C7 is grounded. A first normally-closed switch P3 is connected in series between the positive electrode of the battery pack BAT and the battery voltage detection pin of the battery management chip U2. The negative electrode of the battery pack BAT is connected to the first terminal of the thermistor NTC and the first terminal of the eighth resistor R8 and is grounded. The second end of the thermistor NTC and the second end of the eighth resistor R8 are connected to the battery temperature detection input pin of the battery management chip. The ICHG pin of the battery management chip U2 is connected to ground through a seventh resistor R7. The STAT pin of the battery management chip U2 is connected to the positive electrode of the charging indicator LED, and the negative electrode of the charging indicator LED is connected to the second end of the sixth resistor R6.
In an embodiment, the battery pack BAT includes a dual lithium battery.
In this embodiment, the battery management circuit has trickle charge protection, overcharge protection, overdischarge protection, and over-temperature protection functions. Specifically, when the battery management chip U2 detects that the battery pack BAT voltage is lower than 5.6V, the discharging is stopped; trickle charging when the battery pack BAT voltage is lower than the trickle charging voltage by 6V; when the battery pack BAT voltage is higher than the trickle charge voltage by 6V, the quick charge is performed, and the charge is stopped until the battery pack BAT voltage reaches 8.4V.
In this embodiment, the battery management chip U2 may perform the shutdown protection on the battery pack BAT by monitoring the voltage across the thermistor NTC.
In this embodiment, the charging indicator light LED is turned on during charging, and the charging indicator light LED is turned off after being fully charged; when the battery management chip U2 detects an abnormal temperature, a short output, a time-out or an over-temperature condition of the battery pack BAT, the charge indicator LED may blink at a frequency of 1.6 HZ.
In an embodiment of the present invention, as shown in fig. 4, fig. 4 shows a circuit schematic diagram of the emergency control circuit 200, which is detailed as follows:
the alternating-current input impedance detection end of the emergency control circuit 200 comprises a first impedance detection end and a second impedance detection end, the first impedance detection end is connected with a mains supply zero line, and the second impedance detection end is connected with a mains supply live line;
the emergency control circuit 200 comprises an emergency chip U3; the emergency chip U3 comprises a zero line detection pin VN and a live line detection pin VL;
a zero line detection pin VN is connected with a first impedance detection end of the emergency control circuit, and a live line detection pin VL is connected with a second impedance detection end of the emergency control circuit; the voltage input end of the emergency chip U3 is connected with the voltage input end of the emergency control circuit; the enabling pin of the emergency chip is the output end of the emergency control circuit.
In this embodiment, the emergency control circuit includes an emergency chip U3, a ninth resistor R9, a tenth resistor R10, an eighth capacitor C8, a ninth capacitor C9, and a fourth diode D4.
Specifically, a VL pin of the emergency chip U3 is connected to a live wire of a mains supply, a VN pin of the emergency chip U3 is connected to a neutral wire of the mains supply and a first end of a ninth capacitor C9, and a second end of the ninth capacitor C9 is grounded to a GND pin and a BATN pin of the emergency chip U3. The enable pin EN of the emergency chip U3 is connected to the output terminal of the emergency control circuit 200 through a ninth resistor R9. The BAT pin of the emergency chip U3 is connected to the first end of the tenth resistor R10, the cathode of the fourth diode D4, and the first end of the eighth capacitor C8, the second end of the tenth resistor R10 is connected to the voltage input terminal BAT + of the emergency control circuit 200, and the anode of the fourth diode D4 and the second end of the eighth capacitor C8 are grounded.
In this embodiment, the specific way of detecting the commercial power by the emergency chip U3 is: detecting the impedance between the live wire and the zero line of the mains supply, wherein when the impedance between the live wire and the zero line of the mains supply is more than 500K ohms, an enabling pin of the emergency chip U3 does not output a signal; when the impedance between the live wire and the zero wire of the mains supply is less than 500K ohms, an enabling pin of the emergency chip U3 outputs a control signal, and the control signal is a high-level Pulse Width Modulation (PWM) signal.
In an embodiment of the present invention, the lamp emergency module further includes a first normally open switch P1 for performing a power failure test;
referring to fig. 4, a first end of the first normally open switch P1 is connected to the VN pin of the emergency chip U3, and a second end of the first normally open switch P1 is connected to the VL pin of the emergency chip U3.
Optionally, referring to fig. 6, fig. 6 shows a circuit diagram of a three-gear dial switch, in which a first normally open switch P1 and a first normally closed switch P3 are additionally provided with a neutral switch P2 to form a three-gear dial switch SW 1.
Referring to fig. 3 and 6, the first normally closed switch P3 is connected in series between the positive electrode of the battery pack BAT and the battery voltage detection pin of the battery management chip U2, and is kept normally closed in the normal use process of the lamp emergency module, that is, the positive electrode of the battery pack BAT is connected to the voltage output end of the battery management circuit, and the battery pack BAT supplies power to the emergency control circuit 200 and the emergency light source circuit 300. When the third dial switch SW1 is toggled to the first normally closed switch P3, that is, the first normally closed switch P3 is turned off, and the battery pack BAT is turned off from the emergency control circuit 200 and the emergency light source circuit 300, the lamp emergency module does not work at this time, so that the battery pack BAT and other components are protected in the transportation or long-term non-use stage of the lamp emergency module, and the loss is reduced.
The VN pin of emergent chip U3 is connected to first normally open switch P1's first end, and the VL pin of emergent chip is connected to the second end, keeps normally opening in the emergent module normal use of lamps and lanterns, does not influence the detection function of emergent chip U3 to the commercial power promptly. The first normally open switch P1 is used for power failure testing, and the third-gear dial switch SW1 is dialed to the first normally open switch P3 only when the lamp emergency module is not installed on the commercial power. When the third dial switch SW1 is dialed to the first normally-open switch P1, that is, the first normally-open switch P1 is closed, the VN pin and the VL pin of the emergency chip U3 are short-circuited, the impedance between the two pins is less than 500K ohms, and the enable pin of the emergency chip outputs a PWM signal to control the emergency light source circuit 300 to emit light. At the moment, whether the lamp emergency module can work normally can be checked under the condition that the lamp emergency module is not connected to the mains supply.
The both ends of vacant switch P2 are vacant, and when third gear dial switch SW1 dialled to vacant switch P2, first normally closed switch P3 normally closed, first normally open switch P1 normally opens a way, and the battery group BAT of lamps and lanterns emergency module normally supplies power to emergency control circuit 200 and emergency light source circuit 300 this moment, and emergency control circuit 200 normally detects the commercial power, and lamps and lanterns emergency module work is at normal condition this moment promptly.
Referring to fig. 5, fig. 5 shows a circuit schematic of the emergency light source circuit 300, detailed as follows:
in an embodiment of the present invention, the emergency light source circuit 300 includes a boost chip U4 and an emergency light string LED 2;
the voltage input end of the boosting chip U2 is connected with the voltage input end of the emergency light source circuit 300; the signal input end of the boosting chip U2 is connected with the signal input end of the emergency light source circuit 300; the output end of the boosting chip U4 is connected with the anode of the emergency light string LED 2; the negative terminal of the emergency light string LED2 is grounded.
In this embodiment, the emergency light source circuit 300 includes a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourth inductor L4, and a fifth diode D5, in addition to the boost chip U4 and the emergency string LED 2; the light string LED2 comprises a light emitting diode light string.
Specifically, the voltage input terminal of the emergency light source circuit 300 is connected to the first terminal of the thirteenth capacitor C13 and the first terminal of the fourth inductor L4; a second end of the fourth inductor L4 is connected to the SW pin of the boost chip U4 and the anode of the fifth diode D5, a VDD pin of the boost chip U4 is connected to a first end of the twelfth capacitor C12, and a second end of the twelfth capacitor C12 and a second end of the thirteenth capacitor C13 are grounded. The VIN pin of the boost chip U4 is connected to the cathode of the fifth diode D5, the first terminal of the tenth capacitor C12, the first terminal of the thirteenth resistor R13, and the first terminal of the eleventh resistor R11. The CS pin of the boosting chip U4 is connected with the second end of the eleventh resistor R11 and the anode of the string LED 2; the negative terminal of the string LED2 is connected to the second terminal of the tenth capacitor C10. An OVP pin of the boost chip U4 is connected to the second terminal of the thirteenth resistor R13 and the first terminal of the twelfth resistor R12. The COMP pin of the boost chip U4 is connected to the first terminal of the eleventh capacitor C11, and the second terminal of the eleventh capacitor C11 is connected to the second terminal of the twelfth resistor R12. An ADJ pin of the boost chip U4 is a signal input terminal of the emergency light source circuit 300. The GND terminal of the boost chip U4 is grounded.
Referring to fig. 7, a second aspect of the present invention provides a lamp 1, including a lamp module 10 and a lamp emergency module 20 as described above, where the lamp module 10 and the lamp emergency module 20 are both connected to a mains supply;
the lamp module 10 is used for receiving commercial power to generate a light source;
the lamp emergency module 20 is configured to perform charging energy storage according to the received mains supply, and generate an emergency light source when impedance at two ends of the mains supply zero line and live line is smaller than a threshold value.
In this embodiment, the lamp module 10 may include multiple forms of driving components and lamp strings, and when the lamp module 10 and the lamp emergency module 20 are connected to the same commercial power together, it may be implemented that when the commercial power fails and the lamp module 10 cannot work and emit light, the lamp emergency module 20 automatically detects the commercial power abnormality and emits light, thereby implementing an emergency function.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A light fixture emergency module, comprising: the emergency power supply circuit, the emergency control circuit and the emergency light source circuit;
the input end of the emergency power supply circuit and the alternating current input impedance detection end of the emergency control circuit are respectively connected with a mains supply; the output end of the emergency power supply circuit is respectively connected with the input end of the emergency control circuit and the voltage input end of the emergency light source circuit; the output end of the emergency control circuit is connected with the signal input end of the emergency light source circuit;
the emergency power supply circuit converts the commercial power into battery voltage and provides the battery voltage for the emergency control circuit and the emergency light source circuit;
the emergency control circuit generates a PWM signal when the alternating current input impedance detection end detects that the impedance of the two ends of the commercial power zero line and the commercial power live line is smaller than a threshold value, and sends the PWM signal to the emergency light source circuit;
and the emergency light source circuit controls the on and off of the emergency light source according to the PWM signal.
2. A lamp emergency module as claimed in claim 1, wherein said emergency supply circuit comprises a constant voltage circuit and a battery management circuit;
the input end of the constant voltage circuit is the input end of the emergency power supply circuit, and the output end of the constant voltage circuit is connected with the input end of the battery management circuit; the output end of the battery management circuit is the output end of the emergency power supply circuit;
the constant voltage circuit converts commercial power into constant voltage and provides the constant voltage for the battery management circuit;
the battery management circuit converts the constant voltage to the battery voltage and provides the battery voltage to the emergency control circuit and the emergency light source circuit.
3. The lamp emergency module of claim 2, wherein the constant voltage circuit comprises a rectifier bridge circuit for converting the commercial power from an ac voltage to a dc voltage, a filter circuit for filtering the dc voltage, and a constant voltage chip circuit for converting the filtered dc voltage to a constant voltage;
a first alternating current input end of the rectifier bridge circuit is connected with the live wire of the commercial power, a second alternating current input end of the rectifier bridge circuit is connected with the zero line of the commercial power, a first direct current output end of the rectifier bridge circuit is connected with the input end of the filter circuit, and a second direct current output end of the rectifier bridge circuit is grounded; the output end of the filter circuit is connected with the input end of the constant voltage chip circuit, and the output end of the constant voltage chip circuit is the output end of the constant voltage circuit.
4. The lamp emergency module of claim 2, wherein the battery management circuit comprises a battery management chip, a battery pack, and a thermistor;
a voltage input pin of the battery management chip is connected with a voltage input end of the battery management circuit; the positive pole of the battery pack is used as the voltage output end of the battery management circuit and is connected with the battery voltage detection pin of the battery management chip, and the negative pole of the battery pack is grounded; the first end of the thermistor is connected with a battery temperature detection input pin of the battery management chip, and the second end of the thermistor is grounded.
5. The lamp emergency module of claim 4, further comprising a first normally closed switch;
the first normally-closed switch is connected in series between the positive electrode of the battery pack and a battery voltage detection pin of the battery management chip.
6. The lamp emergency module of claim 4, wherein the battery management circuit further comprises a charge indicator light;
the charging indicator light is connected between the voltage input pin and the status pin of the battery management chip.
7. The lamp emergency module of claim 1, wherein the ac input impedance detection terminal of the emergency control circuit comprises a first impedance detection terminal and a second impedance detection terminal, the first impedance detection terminal is connected to a neutral line of a utility power, and the second impedance detection terminal is connected to a live line of the utility power;
the emergency control circuit comprises an emergency chip; the emergency chip comprises a zero line detection pin and a live line detection pin;
the zero line detection pin is connected with a first impedance detection end of the emergency control circuit, and the live line detection pin is connected with a second impedance detection end of the emergency control circuit; the voltage input end of the emergency chip is connected with the voltage input end of the emergency control circuit; and an enabling pin of the emergency chip is an output end of the emergency control circuit.
8. The lamp emergency module of claim 7, further comprising a first normally open switch for performing a power outage test;
the first end of the first normally-open switch is connected with the zero line detection pin of the emergency chip, and the second end of the first normally-open switch is connected with the live line detection pin of the emergency chip.
9. The lamp emergency module of claim 1, wherein the emergency light source circuit comprises a boost chip and an emergency light string;
the voltage input end of the boosting chip is connected with the voltage input end of the emergency light source circuit; the signal input end of the boosting chip is connected with the signal input end of the emergency light source circuit; the output end of the boosting chip is connected with the anode of the emergency lamp string; the negative pole of the emergency lamp string is grounded.
10. A luminaire comprising a luminaire module and a luminaire emergency module according to any one of claims 1 to 9, both of said luminaire module and said luminaire emergency module being connected to mains electricity;
the lamp module is used for receiving commercial power to generate a light source;
the lamp emergency module is used for charging and storing energy according to received commercial power and generating an emergency light source when the impedance at two ends of the commercial power zero line and the commercial power zero line is smaller than a threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020288480.7U CN211860603U (en) | 2020-03-10 | 2020-03-10 | Lamp emergency module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020288480.7U CN211860603U (en) | 2020-03-10 | 2020-03-10 | Lamp emergency module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030535A1 (en) * | 2021-09-06 | 2023-03-09 | 嘉兴山蒲照明电器有限公司 | Led lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023030535A1 (en) * | 2021-09-06 | 2023-03-09 | 嘉兴山蒲照明电器有限公司 | Led lamp |
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