CN211267181U - LED lamp circuit with emergency lighting function - Google Patents
LED lamp circuit with emergency lighting function Download PDFInfo
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- CN211267181U CN211267181U CN201920864919.3U CN201920864919U CN211267181U CN 211267181 U CN211267181 U CN 211267181U CN 201920864919 U CN201920864919 U CN 201920864919U CN 211267181 U CN211267181 U CN 211267181U
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Abstract
The utility model discloses an LED lamp circuit with emergency lighting function, which comprises a rectifying and filtering circuit for converting commercial AC voltage into DC voltage for output, a constant current driving module capable of converting the DC voltage output by the rectifying and filtering circuit into constant current and high-frequency AC voltage for output, a first LED light-emitting module for accessing the constant current, and a second LED light-emitting module connected with the first LED light-emitting module in series, the LED light-emitting module comprises a state driving circuit, a rechargeable battery, a high-frequency rectifying circuit and a voltage stabilizing circuit, wherein the state driving circuit is used for detecting whether commercial power alternating voltage is in an abnormal power-off state and providing working current for the second LED light-emitting module when the commercial power alternating voltage is in the abnormal power-off state; the advantage is simple structure, and the cost is lower.
Description
Technical Field
The utility model relates to a LED lamp circuit especially relates to a LED lamp circuit with emergency lighting function.
Background
The LED lamp has the advantages of energy conservation, environmental protection and the like, and has been widely applied in the field of illumination. Along with the rapid development of LED lamp technology, can realize various functions, the intelligence LED lamp that more accords with consumer's demand constantly appears. The LED lamp with the emergency lighting function is widely used as an intelligent LED lamp.
The existing LED lamp circuit with the emergency lighting function mainly comprises a rectifying and filtering circuit, a constant current driving module, a first LED light-emitting module, a second LED light-emitting module, a high-frequency rectifying circuit, a voltage stabilizing circuit, a charging and discharging protection circuit, a rechargeable battery and a state driving circuit; the rectification filter circuit is provided with a live wire input end, a zero line input end, an output end and a grounding end, the constant current drive module adopts a voltage reduction constant current LED drive circuit with mature technology and is provided with an input end, a current output end, a high frequency low voltage output end and a grounding end, the first LED light-emitting module and the second LED light-emitting module are LED circuits with mature technology and are respectively provided with a positive pole and a negative pole, the high frequency rectifier circuit is provided with an input end, an output end and a grounding end and is a half-wave rectifier circuit, the voltage stabilizing circuit is provided with an input end, an output end and a grounding end, the charge-discharge protection circuit is provided with a positive pole, an output end and a grounding end, the rechargeable battery is provided with a positive pole and a negative pole, the state drive circuit can detect whether the mains supply voltage is in an abnormal power, the output end of the voltage stabilizing circuit is connected with the positive electrode of the state driving circuit, the positive electrode of the charge and discharge management circuit and the positive electrode of the rechargeable battery, the output end of the charge and discharge management circuit is connected with the negative electrode of the rechargeable battery, the output end of the state driving circuit is connected with the positive electrode of the second LED light-emitting module, the grounding end of the rectifying and filtering circuit, the grounding end of the constant current driving module, the grounding end of the state driving module, the zero line input end of the state driving circuit and the zero line input end of the commercial power are connected, the zero line of the commercial power is connected, the output end of the rectifying and filtering circuit, the positive electrode of the first LED light-emitting module and the input end of the constant current driving module are connected, the current output end of the constant current driving module is connected with the negative electrode of the first LED light-emitting module, the, The grounding end of the high-frequency rectifying circuit, the grounding end of the voltage stabilizing circuit, the grounding end of the state driving circuit, the grounding end of the charge-discharge management circuit and the negative electrode of the second LED light-emitting module are connected.
When the LED lamp circuit is connected to mains voltage, the first LED light-emitting module emits light normally, the second LED light-emitting module does not emit light, meanwhile, the rechargeable battery is in a charging state, and when the rechargeable battery is fully charged, the charging is stopped automatically. When the LED lamp circuit is disconnected from the mains voltage, the first LED light-emitting module and the second LED light-emitting module do not emit light. If the LED lamp circuit is still in a state of being connected with the mains supply voltage, when the external mains supply voltage disappears abnormally and the working voltage cannot be provided, the rechargeable battery in the LED lamp circuit provides electric energy to enable the second LED light-emitting module to emit light and the first LED light-emitting module to not emit light, and the emergency lighting function is realized at the moment.
Although the LED lamp circuit brings convenience to places where abnormal power failure often occurs, the LED lamp circuit is complex in structure and high in cost.
Disclosure of Invention
The utility model aims to solve the technical problem that a LED lamp circuit with emergency lighting function that simple structure, cost are lower is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an LED lamp circuit with an emergency lighting function comprises a rectifying and filtering circuit, a constant current driving module, a first LED light-emitting module, a second LED light-emitting module, a state driving circuit, a rechargeable battery, a high-frequency rectifying circuit, a charging circuit and a power supply circuit, wherein the rectifying and filtering circuit is used for converting commercial power alternating voltage into direct current voltage to be output, the constant current driving module is used for converting the direct current voltage output by the rectifying and filtering circuit into constant current and outputting high-frequency alternating voltage, the first LED light-emitting module is used for connecting the constant current, the second LED light-emitting module is connected with the first LED light-emitting module in series, the state driving circuit is used for detecting whether the commercial power alternating voltage is in an abnormal power-off state and providing working current for the second LED light-emitting module in the abnormal power-off state, the rechargeable battery is used for supplying power to the state driving circuit in the abnormal power-off state, the high-frequency rectifying circuit is used for converting An electrical voltage regulation circuit.
The rectifier filter circuit is provided with a live wire input end, a zero line input end, an output end and a grounding end, the first LED light-emitting module and the second LED light-emitting module are respectively provided with a positive electrode and a negative electrode, the high-frequency rectifier circuit is provided with an input end, an output end and a grounding end, the voltage stabilizing circuit is provided with an input end, an output end and a grounding end, the rechargeable battery is provided with a positive electrode and a negative electrode, the state drive circuit is provided with a live wire input end, a zero line input end, a positive electrode, an output end and a grounding end, the constant current drive module is provided with an input end, a current output end, a high-frequency low-voltage output end and a grounding end, the live wire input end of the rectifier filter circuit is connected with the live wire input end of the state drive circuit and the connection end of the live wire is connected with the live wire of the commercial power, the LED constant-current drive circuit is characterized in that the output end of the rectification filter circuit is connected with the input end of the constant-current drive module, the current output end of the constant-current drive module is connected with the anode of the first LED light-emitting module, the high-frequency low-voltage output end of the constant-current drive module is connected with the input end of the high-frequency rectification circuit, the output end of the high-frequency rectification circuit is connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit, the anode of the rechargeable battery and the anode of the state drive circuit are connected, the output end of the state drive circuit, the cathode of the first LED light-emitting module and the anode of the second LED light-emitting module are connected, the grounding end of the rectification filter circuit, the grounding end of the constant-current drive module, the grounding end of the high-frequency rectification circuit, the grounding end of the voltage stabilizing, And the grounding end of the state driving circuit, the negative electrode of the rechargeable battery and the negative electrode of the second LED light-emitting module are connected.
The constant current driving module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a first diode, a first chip and a first transformer, wherein the model of the first chip is MT7855, the first transformer is provided with a primary coil and a secondary coil, the first diode is a high-frequency rectifier diode, the second capacitor is an electrolytic capacitor, the 5 th pin and the 6 th pin of the first chip are connected, the connecting end of the first chip is the input end of the constant current driving module, the 3 rd pin of the first chip is connected with one end of the first capacitor, the 4 th pin of the first chip, one end of the first resistor are connected with one end of the second resistor, the 7 th pin of the first chip is connected with one end of the third resistor, the 2 nd pin of the first chip, the other end of the first capacitor, the second pin of the first chip, the second pin of the second capacitor, the second pin, The other end of the first resistor, the other end of the third resistor and one end of the primary coil of the first transformer are connected, the other end of the second resistor, one end of the fourth resistor, the anode of the second capacitor, the cathode of the first diode and the other end of the primary coil of the first transformer are connected, the connecting end of the second resistor, the one end of the fourth resistor, the anode of the second capacitor and the other end of the secondary coil of the first transformer are connected, the connecting end of the second resistor and the other end of the secondary coil of the second transformer are connected, and the connecting end of the fourth resistor, the anode of the first diode, the cathode of the second capacitor and the other end of the secondary coil of the first transformer are connected and the connecting end of the secondary coil of the constant current driving module is the.
The high-frequency rectifying circuit comprises a second diode and a third capacitor, the second diode is a high-frequency rectifying diode, the third capacitor is an electrolytic capacitor, the anode of the second diode is the input end of the high-frequency rectifying circuit, the cathode of the second diode is connected with the anode of the third capacitor, the connecting end of the second diode is the output end of the high-frequency rectifying circuit, and the cathode of the third capacitor is the grounding end of the high-frequency rectifying circuit.
The voltage stabilizing circuit comprises a second chip and a fourth capacitor, wherein the second chip is a common LDO three-terminal linear voltage stabilizing circuit chip and is provided with an input end, an output end and a grounding end, the input end of the second chip is the input end of the voltage stabilizing circuit, the output end of the second chip is connected with one end of the fourth capacitor, the connecting end of the second chip is the output end of the voltage stabilizing circuit, the grounding end of the second chip is connected with the other end of the fourth capacitor, and the connecting end of the second chip is the grounding end of the voltage stabilizing circuit.
The state driving circuit comprises a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth capacitor, a sixth capacitor, a third diode, a fourth diode, a first triode, a second triode and a third triode, wherein the third diode is a rectifier diode, the fourth diode is a voltage stabilizing diode, the first triode and the third triode are both PNP triodes, the second triode is an NPN triode, one end of the fifth resistor is the live wire input end of the state driving circuit, one end of the sixth resistor is the zero wire input end of the state driving circuit, the other end of the sixth resistor, one end of the fifth capacitor, the negative electrode of the third diode and the negative electrode of the fourth diode are connected, the positive electrode of the third diode, one end of the seventh resistor and the base of the first triode are connected, the collector of the first triode and one end of the eighth resistor are connected, the other end of the eighth resistor, one end of the ninth resistor and one end of the sixth capacitor are connected with the base of the second triode, the collector of the second triode and one end of the eleventh resistor are connected, the other end of the eleventh resistor and one end of the tenth resistor are connected with the base of the third triode, the collector of the third triode and one end of the twelfth resistor are connected, the other end of the twelfth resistor is the output end of the state driving circuit, the other end of the seventh resistor, the other end of the tenth resistor, the emitter of the first triode and the emitter of the third triode are connected, and the connection end of the twelfth resistor is the output end of the state driving circuit The other end of the fifth resistor, the other end of the ninth resistor, the other end of the fifth capacitor, the other end of the sixth capacitor, and the anode of the fourth diode are connected to the emitter of the second triode, and the connection end of the fourth diode is the ground end of the state driving circuit.
Rectifier filter circuit include full-bridge rectifier bridge heap and seventh electric capacity, the seventh electric capacity be electrolytic capacitor, the 1 st foot of full-bridge rectifier bridge heap do rectifier filter circuit's live wire input, the 3 rd foot of full-bridge rectifier bridge heap do rectifier filter circuit's zero line input, the 2 nd foot of full-bridge rectifier bridge heap with the positive pole of seventh electric capacity connect and its link do rectifier filter circuit's output, the 4 th foot of full-bridge rectifier bridge heap with the negative pole of seventh electric capacity connect and its link do rectifier filter circuit's earthing terminal.
The rechargeable battery is a lithium iron phosphate battery. The structure has large capacitance, safety and reliability.
Compared with the prior art, the utility model has the advantages that the LED lamp circuit with the emergency lighting function is formed by the rectifying and filtering circuit for converting the commercial AC voltage into the DC voltage output, the constant current driving module for converting the DC voltage output by the rectifying and filtering circuit into the constant current and the high-frequency AC voltage output, the first LED light-emitting module for connecting the constant current, the second LED light-emitting module connected with the first LED light-emitting module in series, the state driving circuit for detecting whether the commercial AC voltage is in the abnormal power-off state and providing the working current for the second LED light-emitting module when the power is abnormally cut off, the rechargeable battery for supplying power for the state driving circuit when the power is abnormally cut off, the high-frequency rectifying circuit for converting the high-frequency AC voltage into the DC voltage output, the voltage stabilizing circuit for charging the rechargeable battery after the DC voltage output by the high-frequency rectifying circuit is stabilized and supplying power for the state driving circuit, when the LED lamp circuit is connected to the mains supply voltage, the rectifying and filtering circuit converts the alternating current voltage of the mains supply into direct current voltage to be output, the constant current driving module outputs constant current after the direct current voltage is converted to drive the first LED light-emitting module and the second LED light-emitting module to emit light simultaneously, and simultaneously outputs high-frequency alternating voltage, the high-frequency alternating voltage is rectified by a high-frequency rectifying circuit and then outputs direct-current voltage, and the direct-current voltage is further processed by a voltage stabilizing circuit, outputs stable direct current voltage to charge the rechargeable battery on one hand and supply power to the state drive circuit on the other hand, when the rechargeable battery is charged until the voltage at the two ends of the rechargeable battery reaches the DC voltage output by the voltage stabilizing circuit, the rechargeable battery stops charging automatically, when the LED lamp circuit is disconnected from the mains supply voltage, because no commercial power alternating-current voltage is input, the constant-current driving module does not work, the output current is zero, and the first LED light-emitting module and the second LED light-emitting module do not emit light; when LED lamp circuit and commercial power are in connected state, if outside commercial power electric wire netting cuts off the power supply unusually, rechargeable battery supplies power for state drive circuit, when state drive circuit detected this state, state drive circuit provides operating current for second LED light emitting module, makes second LED light emitting module luminous, and first LED light emitting module can not give out light this moment, gets into emergency lighting state, from this the utility model discloses a establish ties first LED light emitting module and second LED light emitting module, makes its external connecting wire only need three to utilize LED light emitting module to have the characteristic of minimum conducting voltage, left out charge-discharge management circuit, on the basis of realizing emergency lighting, the structure is simpler, and the cost is lower.
Drawings
Fig. 1 is a block diagram of a conventional LED lamp circuit with an emergency lighting function;
fig. 2 is a block diagram of the LED lamp circuit with emergency lighting function according to the present invention;
fig. 3 is a circuit diagram of the LED lamp circuit with emergency lighting function of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example (b): as shown in fig. 2, an LED lamp circuit having an emergency lighting function, the high-frequency alternating current power supply device comprises a rectifying and filtering circuit used for converting alternating current voltage of a mains supply into direct current voltage to be output, a constant current driving module capable of converting the direct current voltage output by the rectifying and filtering circuit into constant current and high-frequency alternating current voltage to be output, a first LED light emitting module used for accessing the constant current, a second LED light emitting module connected with the first LED light emitting module in series, a state driving circuit used for detecting whether the alternating current voltage of the mains supply is in an abnormal power-off state and providing working current for the second LED light emitting module when the power is abnormally cut off, a rechargeable battery BT1 used for supplying power for the state driving circuit when the power is abnormally cut off, a high-frequency rectifying circuit used for converting the high-frequency alternating current voltage into the direct current voltage to be output, and a voltage stabilizing circuit used for stabilizing the direct current voltage output by the high-frequency.
As shown in fig. 2, in the present embodiment, the rectifying and filtering circuit has a live line input terminal, a zero line input terminal, an output terminal and a ground terminal, the first LED lighting module and the second LED lighting module respectively have a positive electrode and a negative electrode, the high frequency rectifying circuit has an input terminal, an output terminal and a ground terminal, the voltage stabilizing circuit has an input terminal, an output terminal and a ground terminal, the rechargeable battery BT1 has a positive electrode and a negative electrode, the status driving circuit has a live line input terminal, a zero line input terminal, a positive electrode, an output terminal and a ground terminal, the constant current driving module has an input terminal, a current output terminal, a high frequency low voltage output terminal and a ground terminal, the live line input terminal of the rectifying and filtering circuit and the live line input terminal of the status driving circuit are connected and connected to a live line of the commercial power, the LED light-emitting device is characterized in that the output end of a rectifying filter circuit is connected with the input end of a constant current driving module, the current output end of the constant current driving module is connected with the anode of a first LED light-emitting module, the high-frequency low-voltage output end of the constant current driving module is connected with the input end of a high-frequency rectifying circuit, the output end of the high-frequency rectifying circuit is connected with the input end of a voltage stabilizing circuit, the output end of the voltage stabilizing circuit, the anode of a rechargeable battery BT1 and the anode of a state driving circuit are connected, the output end of the state driving circuit, the cathode of the first LED light-emitting module and the anode of a second LED light-emitting module are connected, the grounding end of the rectifying filter circuit, the grounding end of the constant current driving module, the grounding end of the high-frequency rectifying circuit.
As shown in fig. 3, in this embodiment, the constant current driving module includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second capacitor C2, a first diode D1, a first chip U1, and a first transformer T1, where the model of the first chip U1 is MT7855, the first transformer T1 has a primary coil and a secondary coil, the first diode D1 is a high-frequency rectifier diode, the second capacitor C2 is an electrolytic capacitor, the 5 th pin and the 6 th pin of the first chip U1 are connected, and a connection end thereof is an input end of the constant current driving module, the 3 rd pin of the first chip U1 is connected to one end of the first capacitor C1, the 4 th pin of the first chip U1, one end of the first resistor R1 is connected to one end of the second resistor R2, the 7 th pin of the first chip U1 is connected to one end of the third resistor R2, and the other end of the first resistor R8656 is connected to the other end of the first chip U2, the other end of the first capacitor R1, the first chip U1, the first, The other end of the third resistor R3 is connected to one end of the primary coil of the first transformer T1, the other end of the second resistor R2, one end of the fourth resistor R4, the anode of the second capacitor C2, the cathode of the first diode D1 and the other end of the primary coil of the first transformer T1 are connected, and the connection end thereof is the current output end of the constant current driving module, one end of the secondary coil of the first transformer T1 is the high-frequency low-voltage output end of the constant current driving module, the other end of the fourth resistor R4, the anode of the first diode D1, the cathode of the second capacitor C2 and the other end of the secondary coil of the first transformer T1 are connected, and the connection end thereof is the ground end of the constant current driving module.
As shown in fig. 3, in the present embodiment, the high-frequency rectification circuit includes a second diode D2 and a third capacitor C3, the second diode D2 is a high-frequency rectification diode, the third capacitor C3 is an electrolytic capacitor, the anode of the second diode D2 is an input terminal of the high-frequency rectification circuit, the cathode of the second diode D2 is connected to the anode of the third capacitor C3, the connection terminal of the second diode D2 is an output terminal of the high-frequency rectification circuit, and the cathode of the third capacitor C3 is a ground terminal of the high-frequency rectification circuit.
As shown in fig. 3, in this embodiment, the regulator includes a second chip U2 and a fourth capacitor C4, the second chip U2 is a commonly used LDO three-terminal linear regulator chip and has an input terminal, an output terminal, and a ground terminal, the input terminal of the second chip U2 is the input terminal of the regulator, the output terminal of the second chip U2 is connected to one terminal of the fourth capacitor C4, and its connection terminal is the output terminal of the regulated voltage, the ground terminal of the second chip U2 is connected to the other terminal of the fourth capacitor C4, and its connection terminal is the ground terminal of the regulator.
As shown in fig. 3, in the present embodiment, the state driving circuit includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a fifth capacitor C5, a sixth capacitor C6, a third diode D3, a fourth diode D4, a first transistor Q1, a second transistor Q2, and a third transistor Q3, the third diode D3 is a rectifier diode, the fourth diode D4 is a zener diode, the first transistor Q1 and the third transistor Q3 are PNP transistors, the second transistor Q2 is an NPN transistor, one end of the fifth resistor R5 is a live wire input end of the state driving circuit, one end of the sixth resistor R6 is a zero wire input end of the state driving circuit, the other end of the sixth resistor R6, one end of the fifth capacitor C5, a negative electrode of the third resistor R4 and a negative electrode 3 of the fourth diode D3634, the anode of the third diode D3, one end of the seventh resistor R7 and the base of the first transistor Q1, the collector of the first transistor Q1 and one end of the eighth resistor R8 are connected, the other end of the eighth resistor R8, one end of the ninth resistor R9, one end of the sixth capacitor C6 and the base of the second transistor Q2 are connected, the collector of the second transistor Q2 and one end of the eleventh resistor R11 are connected, the other end of the eleventh resistor R11 and one end of the tenth resistor R10 are connected to the base of the third transistor Q3, the collector of the third transistor Q3 and one end of the twelfth resistor R12 are connected, the other end of the twelfth resistor R12 is the output end of the state driving circuit, the other end of the seventh resistor R7, the other end of the tenth resistor R10, the emitter of the first transistor Q1 and the emitter of the third transistor Q3 are connected, and the connection end of the state driving circuit is the anode of the state driving circuit, and the other end of the resistor R5, The other end of the ninth resistor R9, the other end of the fifth capacitor C5, the other end of the sixth capacitor C6, the anode of the fourth diode D4 and the emitter of the second transistor Q2 are connected, and the connection end of the fourth diode D4 is the ground end of the state driving circuit.
As shown in fig. 3, in this embodiment, the rectifying and filtering circuit includes a full-bridge rectifier bridge Db and a seventh capacitor C7, the seventh capacitor C7 is an electrolytic capacitor, the 1 st pin of the full-bridge rectifier bridge Db is a live wire input terminal of the rectifying and filtering circuit, the 3 rd pin of the full-bridge rectifier bridge Db is a zero wire input terminal of the rectifying and filtering circuit, the 2 nd pin of the full-bridge rectifier bridge Db and the positive electrode of the seventh capacitor C7 are connected, and the connection end thereof is an output end of the rectifying and filtering circuit, the 4 th pin of the full-bridge rectifier bridge Db and the negative electrode of the seventh capacitor C7 are connected, and the connection end thereof is a ground end of the rectifying and filtering circuit.
As shown in fig. 3, in this embodiment, the rechargeable battery BT1 is a lithium iron phosphate battery.
Claims (8)
1. An LED lamp circuit with an emergency lighting function is characterized by comprising a rectifying and filtering circuit, a constant current driving module, a first LED light-emitting module, a second LED light-emitting module, a state driving circuit, a rechargeable battery, a high-frequency rectifying circuit and a voltage stabilizing circuit, wherein the rectifying and filtering circuit is used for converting commercial power alternating voltage into direct current voltage to be output, the constant current driving module is used for converting the direct current voltage output by the rectifying and filtering circuit into constant current and outputting high-frequency alternating voltage, the first LED light-emitting module is used for connecting the constant current, the second LED light-emitting module is connected with the first LED light-emitting module in series, the state driving circuit is used for detecting whether the commercial power alternating voltage is in an abnormal power-off state and providing working current for the second LED light-emitting module in the abnormal power-off state, the rechargeable battery is used for supplying power to the state driving circuit in the abnormal power-off state, the high-frequency rectifying circuit is used for converting the And the voltage stabilizing circuit supplies power to the state drive circuit.
2. The LED lamp circuit with emergency lighting function according to claim 1, wherein the rectifying filter circuit has a live wire input terminal, a zero line input terminal, an output terminal and a ground terminal, the first LED light emitting module and the second LED light emitting module respectively have a positive electrode and a negative electrode, the high frequency rectifying circuit has an input terminal, an output terminal and a ground terminal, the voltage stabilizing circuit has an input terminal, an output terminal and a ground terminal, the rechargeable battery has a positive electrode and a negative electrode, the state driving circuit has a live wire input terminal, a zero line input terminal, a positive electrode, an output terminal and a ground terminal, the constant current driving module has an input terminal, a current output terminal, a high frequency low voltage output terminal and a ground terminal, the live wire input terminal of the rectifying filter circuit and the live wire input terminal of the state driving circuit are connected and connected with a live wire connected with a commercial power, the zero line input end of the rectification filter circuit is connected with the zero line input end of the state drive circuit, and the connection end of the zero line input end of the rectification filter circuit is connected with the zero line of commercial power, the rectification filter circuit is characterized in that the output end of the rectification filter circuit is connected with the input end of the constant current drive module, the current output end of the constant current drive module is connected with the anode of the first LED light-emitting module, the high-frequency low-voltage output end of the constant current drive module is connected with the input end of the high-frequency rectification circuit, the output end of the high-frequency rectification circuit is connected with the input end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit, the anode of the rechargeable battery is connected with the anode of the state drive circuit, the output end of the state drive circuit, the cathode of the first LED light-emitting module and the anode of the second LED light-, the ground terminal of the rectification filter circuit, the ground terminal of the constant current driving module, the ground terminal of the high-frequency rectification circuit, the ground terminal of the voltage stabilizing circuit, the ground terminal of the state driving circuit, and the negative electrode of the rechargeable battery are connected with the negative electrode of the second LED light-emitting module.
3. The LED lamp circuit with the emergency lighting function according to claim 2, wherein the constant current driving module comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a first diode, a first chip and a first transformer, the first chip is MT7855, the first transformer has a primary coil and a secondary coil, the first diode is a high frequency rectifier diode, the second capacitor is an electrolytic capacitor, the 5 th pin and the 6 th pin of the first chip are connected, the connection end of the first chip is the input end of the constant current driving module, the 3 rd pin of the first chip is connected with one end of the first capacitor, the 4 th pin of the first chip, one end of the first resistor and one end of the second resistor are connected, the 7 th pin of the first chip is connected with one end of the third resistor, the No. 2 pin of the first chip, the other end of the first capacitor, the other end of the first resistor, the other end of the third resistor and one end of the primary coil of the first transformer are connected, the other end of the second resistor, one end of the fourth resistor, the anode of the second capacitor, the cathode of the first diode and the other end of the primary coil of the first transformer are connected, and the connecting end of the second diode and the cathode of the first diode is the current output end of the constant current driving module, one end of the secondary coil of the first transformer is a high-frequency low-voltage output end of the constant current driving module, the other end of the fourth resistor, the anode of the first diode, the cathode of the second capacitor and the other end of the secondary coil of the first transformer are connected, and the connecting end of the fourth resistor, the anode of the first diode, the cathode of the second capacitor and the other end of the secondary coil of the first transformer are grounded.
4. The LED lamp circuit with the emergency lighting function according to claim 2, wherein the high-frequency rectifying circuit comprises a second diode and a third capacitor, the second diode is a high-frequency rectifying diode, the third capacitor is an electrolytic capacitor, the anode of the second diode is the input end of the high-frequency rectifying circuit, the cathode of the second diode is connected with the anode of the third capacitor, the connection end of the second diode is the output end of the high-frequency rectifying circuit, and the cathode of the third capacitor is the ground end of the high-frequency rectifying circuit.
5. The LED lamp circuit with the emergency lighting function according to claim 2, wherein the voltage regulator circuit comprises a second chip and a fourth capacitor, the second chip is a common LDO three-terminal linear voltage regulator circuit chip having an input terminal, an output terminal and a ground terminal, the input terminal of the second chip is the input terminal of the voltage regulator circuit, the output terminal of the second chip is connected to one end of the fourth capacitor, and the connection terminal of the second chip is the output terminal of the regulated voltage, the ground terminal of the second chip is connected to the other end of the fourth capacitor, and the connection terminal of the second chip is the ground terminal of the voltage regulator circuit.
6. The LED lamp circuit with emergency lighting function according to claim 2, wherein the status driving circuit comprises a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a fifth capacitor, a sixth capacitor, a third diode, a fourth diode, a first triode, a second triode, and a third triode, the third diode is a rectifier diode, the fourth diode is a zener diode, the first triode and the third triode are both PNP triodes, the second triode is an NPN triode, one end of the fifth resistor is the live wire input end of the status driving circuit, one end of the sixth resistor is the neutral wire input end of the status driving circuit, and the other end of the sixth resistor is the neutral wire input end of the status driving circuit, One end of the fifth capacitor, the negative electrode of the third diode and the negative electrode of the fourth diode are connected, the positive electrode of the third diode, one end of the seventh resistor and the base electrode of the first triode are connected, the collector of the first triode and one end of the eighth resistor are connected, the other end of the eighth resistor, one end of the ninth resistor and one end of the sixth capacitor are connected with the base electrode of the second triode, the collector of the second triode and one end of the eleventh resistor are connected, the other end of the eleventh resistor, one end of the tenth resistor and the base electrode of the third triode, the collector of the third triode and one end of the twelfth resistor are connected, and the other end of the twelfth resistor is the output end of the state driving circuit, the other end of the seventh resistor, the other end of the tenth resistor, the emitter of the first triode and the emitter of the third triode are connected, the connection end of the emitter of the first triode and the emitter of the third triode is the positive electrode of the state driving circuit, the other end of the fifth resistor, the other end of the ninth resistor, the other end of the fifth capacitor, the other end of the sixth capacitor, the positive electrode of the fourth diode and the emitter of the second triode are connected, and the connection end of the emitter of the second triode and the emitter of the fifth resistor are grounded ends of the state driving circuit.
7. The LED lamp circuit with emergency lighting function according to claim 2, wherein the rectifying and filtering circuit comprises a full-bridge rectifier bridge stack and a seventh capacitor, the seventh capacitor is an electrolytic capacitor, the 1 st pin of the full-bridge rectifier bridge stack is the live wire input end of the rectifying and filtering circuit, the 3 rd pin of the full-bridge rectifier bridge stack is the zero line input end of the rectifying and filtering circuit, the 2 nd pin of the full-bridge rectifier bridge stack is connected with the positive electrode of the seventh capacitor, and the connecting end thereof is the output end of the rectifying and filtering circuit, the 4 th pin of the full-bridge rectifier bridge stack is connected with the negative electrode of the seventh capacitor, and the connecting end thereof is the grounding end of the rectifying and filtering circuit.
8. The LED lamp circuit with emergency lighting function according to claim 2, wherein said rechargeable battery is a lithium iron phosphate battery.
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| CN201920864919.3U CN211267181U (en) | 2019-06-10 | 2019-06-10 | LED lamp circuit with emergency lighting function |
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| CN201920864919.3U CN211267181U (en) | 2019-06-10 | 2019-06-10 | LED lamp circuit with emergency lighting function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087044A (en) * | 2020-09-10 | 2020-12-15 | 西安新摩尔半导体有限公司 | Charging and discharging control circuit for charging lamp and LED emergency lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087044A (en) * | 2020-09-10 | 2020-12-15 | 西安新摩尔半导体有限公司 | Charging and discharging control circuit for charging lamp and LED emergency lamp |
| CN112087044B (en) * | 2020-09-10 | 2021-11-19 | 西安新摩尔半导体有限公司 | Charging and discharging control circuit for charging lamp and LED emergency lamp |
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