CN211267175U - Emergency LED lamp circuit capable of being charged in light-off state - Google Patents
Emergency LED lamp circuit capable of being charged in light-off state Download PDFInfo
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- CN211267175U CN211267175U CN201921985972.5U CN201921985972U CN211267175U CN 211267175 U CN211267175 U CN 211267175U CN 201921985972 U CN201921985972 U CN 201921985972U CN 211267175 U CN211267175 U CN 211267175U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses an emergent LED lamp circuit that can charge when putting out the light state, including rectifier circuit, power conversion circuit, first LED light emitting module, second LED light emitting module, detection control circuit, battery and state conversion circuit, state conversion circuit adopts the circuit realization that can vary output state according to control switch's operation control, and state conversion circuit has two kinds of output state when emergent LED lamp circuit normally inserts the commercial power: the power conversion circuit comprises a power conversion circuit, a state conversion circuit and a power conversion circuit, wherein the power conversion circuit is used for converting direct current voltage output by the power conversion circuit into a light charging current output when the state conversion circuit is in the light charging output state; the charging device has the advantages of simple structure, lower cost, short charging time and no waste of electric energy, and can charge in a light-off state.
Description
Technical Field
The utility model relates to an emergent LED lamp circuit especially relates to an emergent LED lamp circuit that can charge at the state of putting out the light.
Background
The LED lamp generally comprises a lamp holder and an LED lamp circuit installed in the lamp holder, a live wire access end and a zero line access end of the LED lamp are respectively arranged on the lamp holder, a live wire input end of the LED lamp circuit is connected with the live wire access end of the LED lamp, and a zero line input end of the LED lamp circuit is connected with the zero line access end of the LED lamp.
The live wire access end of the LED lamp is connected to the live wire of commercial power through the control switch, the zero line access end of the LED lamp is connected to the zero line of the commercial power, when the control switch is closed, if the commercial power is normal, alternating voltage output by the commercial power is loaded between the live wire access end and the zero line access end of the LED lamp, the commercial power alternating current is input into the LED lamp circuit to enable the LED lamp circuit to emit light, if the commercial power is powered off, no alternating voltage is loaded between the live wire access end and the zero line access end of the LED lamp, the LED lamp circuit does not emit light, and a conductive loop exists between the live wire input end and the zero line input end of the LED lamp circuit due to the closing; when the control switch is switched off, no commercial power alternating-current voltage exists between the live wire access end and the zero line access end of the LED lamp, and no conductive loop exists between the live wire access end and the zero line input end of the LED lamp circuit due to the fact that the control switch is switched off.
The emergency LED lamp with the emergency lighting function is an LED lamp which is widely used at present, a storage battery is arranged in an emergency LED lamp circuit, the emergency LED lamp is used as an ordinary LED lamp under the condition that the mains supply is normal, when the mains supply is powered off suddenly, the storage battery supplies power, the emergency LED lamp still can emit light, and the emergency LED lamp is used as the emergency lamp at the moment. The current emergency LED lamp has also been widely used as a mobile light source for temporary application in occasions where the mains supply can not be accessed.
As shown in fig. 1, an existing emergency LED lamp circuit generally includes a rectifying circuit, a power conversion circuit, a first LED lighting module, a second LED lighting module, a detection control circuit, and a storage battery. The detection control circuit is used for detecting whether voltage input exists between a live wire input end and a zero line input end of the emergency LED lamp circuit or not, and can judge whether a conductive loop exists outside the emergency LED lamp circuit or not when no voltage is input, the storage battery is respectively connected with the detection control circuit and the power conversion circuit, when the emergency LED lamp circuit is connected with the mains supply voltage, the detection control circuit controls the storage battery to enter a charging state if the storage battery is not fully charged, and the storage battery is connected with the direct current voltage output by the power conversion circuit for charging at the moment, when the storage battery is fully charged, the direct current voltage output by the power conversion circuit cannot charge the storage battery, the second LED light-emitting circuit is connected with the detection control circuit, the detection control circuit controls the connection state of the second LED light-emitting circuit and the storage battery by controlling the on-off state of an internal electronic switch of the detection control circuit, when the commercial power alternating current voltage is connected into the emergency LED lamp circuit, the internal electronic switch of the detection control circuit is off, the second LED light-emitting circuit is disconnected from the storage battery, the electric energy of the storage battery cannot be loaded to the second LED light-emitting circuit, when the commercial power alternating current voltage is not connected into the emergency LED lamp circuit, the first LED light-emitting module does not emit light, if a conduction loop does not exist between the live wire input end and the zero wire input end of the emergency LED lamp circuit at the moment, the internal electronic switch of the detection control circuit is in the off state, and the, the second LED light-emitting module does not emit light, if a conductive loop is arranged between the live wire input end and the zero line input end of the emergency LED lamp circuit at the moment, the internal electronic switch of the detection control circuit is switched on, the storage battery provides electric energy for the second LED light-emitting module, and the second LED light-emitting module emits light.
The emergency LED lamp circuit is simple in structure and has the advantage of low cost, but the storage battery can be charged only when the first LED light-emitting module is connected to the mains voltage and emits light. Therefore, if the battery is charged in a case where illumination is not required in daytime or the like, electric energy is wasted.
Disclosure of Invention
The utility model aims to solve the technical problem that an emergency LED lamp circuit that simple structure, the cost is lower, can not cause the waste of electric energy can charge at the state of putting out the light is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an emergency LED lamp circuit capable of being charged in a light-off state comprises a rectifying circuit, a power conversion circuit, a first LED light-emitting module, a second LED light-emitting module, a detection control circuit and a storage battery, wherein the storage battery, 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 rectifying circuit is used for converting an accessed mains supply alternating current voltage into a direct current voltage for output, the power conversion circuit is used for converting the direct current voltage output by the rectifying circuit and then respectively generating a direct current voltage and a direct current output, the positive electrode of the first LED light-emitting module is used for accessing a direct current output by the power conversion circuit, the positive electrode of the storage battery, the negative electrode of the storage battery and the positive electrode of the second LED light-emitting module are respectively connected with the detection control circuit, the detection control circuit is used for detecting whether voltage input exists between a live wire input end and a zero line input end of the emergency LED lamp circuit, and can judge whether a conductive loop exists outside the emergency LED lamp circuit when no voltage input exists; when commercial power alternating voltage is not connected to the emergency LED lamp circuit, the first LED light-emitting module does not emit light, if a conduction loop does not exist between the live wire input end and the zero line input end of the emergency LED lamp circuit at the moment, the detection control circuit does not control the storage battery to supply electric energy to the second LED light-emitting module, the second LED light-emitting module does not emit light, if a conduction loop exists between the live wire input end and the zero line input end of the emergency LED lamp circuit at the moment, the detection control circuit controls the storage battery to supply electric energy to the second LED light-emitting module, the second LED light-emitting module emits light, the emergency LED lamp circuit further comprises a state conversion circuit, the state conversion circuit is realized by adopting a circuit capable of converting the output state according to the operation control of a control switch, and the detection control circuit, the positive electrode of the storage battery and the negative electrode of the first LED light-emitting module respectively correspond to the state conversion circuit The circuit is connected, and the state conversion circuit has two output states when the emergency LED lamp circuit is normally connected with the mains supply: a lighting charging output state and a lighting-off charging output state, when the state converting circuit is in the lighting charging output state, the state converting circuit is used for converting the direct-current voltage output by the power converting circuit into the current output for lighting charging and enabling the first LED light-emitting module to emit light by current flowing through, when the state converting circuit is in the lighting-off charging output state, the state converting circuit is used for converting the direct-current voltage output by the power converting circuit into the lighting-off charging current output and enabling the first LED light-emitting module not to emit light by current flowing through, the lighting-off charging current is larger than the lighting-on charging current, when the state converting circuit is in the lighting-off charging state or the lighting-on charging state, if the storage battery is in the charging state at the moment, the storage battery is connected with the lighting-off charging current or the lighting-on charging current output by the state converting circuit The stream is charged.
The power conversion circuit comprises an input end, a first output end, a second output end and a grounding end, the detection control circuit comprises a live wire input end, a zero wire input end, an anode, a control end, an output end and a grounding end, the state conversion circuit comprises a detection end, an anode, a first output end, a second output end and a grounding end, the live wire input end of the rectification circuit is the live wire input end of the emergency LED lamp circuit, the zero wire input end of the rectification circuit is the zero wire input end of the emergency LED lamp circuit, the live wire input end of the detection control circuit is connected with the live wire input end of the rectification circuit, the zero wire input end of the detection control circuit is connected with the zero wire input end of the rectification circuit, and the detection end of the state conversion circuit is connected with the input end or the zero wire input end of the emergency LED lamp circuit or the zero wire input end of the rectification circuit The output end of the rectification circuit is connected with the input end of the power conversion circuit, the first output end of the power conversion circuit is connected with the anode of the first LED light-emitting module, the second output end of the power conversion circuit is connected with the anode of the state conversion circuit, the cathode of the first LED light-emitting module is connected with the first output end of the state conversion circuit, the second output end of the state conversion circuit is respectively connected with the anode of the detection control circuit and the anode of the storage battery, the control end of the detection control circuit is connected with the cathode of the storage battery, the output end of the detection control circuit is connected with the anode of the second LED light-emitting module, the grounding end of the power conversion circuit, the grounding end of the state conversion circuit and the grounding end of the detection control circuit, And the negative electrode of the second LED light-emitting module is connected with the grounding end of the rectifying circuit.
The detection control circuit comprises a first integrated circuit chip, a first resistor, a second resistor, a third resistor and a first capacitor, wherein the first integrated circuit chip is realized by an emergency lamp special detection chip with the model of QW2886, one end of the first resistor is the live wire input end of the detection control circuit, one end of the second resistor is the zero wire input end of the detection control circuit, the other end of the first resistor is connected with the 8 th pin of the first integrated circuit chip, the other end of the second resistor is connected with the 1 st pin of the first integrated circuit chip, one end of the third resistor is the output end of the detection control circuit, the other end of the third resistor is connected with the 3 rd pin of the first integrated circuit chip, the 6 th pin of the first integrated circuit chip is connected with one end of the first capacitor, and the connecting end of the first capacitor is the anode of the detection control circuit, the 5 th pin of the first integrated circuit chip is connected with the other end of the first capacitor, the connecting end of the first integrated circuit chip is the control end of the detection control circuit, and the 4 th pin of the first integrated circuit chip is the grounding end of the detection control circuit. The circuit has complete functions, simple circuit structure and low cost.
The state switching circuit comprises a second integrated circuit chip, a first diode, a second capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first MOS tube and a second MOS tube, wherein the second integrated circuit chip is packaged by a chip of SOT23 in a type of S4223T, the first diode is a rectifier diode, the anode of the first diode is the detection end of the state switching circuit, the cathode of the first diode is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the 5 th pin of the second integrated circuit chip, one end of the eighth resistor, one end of the fifth resistor, one end of the sixth resistor and one end of the seventh resistor are connected, the connection end of the eighth resistor and the source of the first MOS tube is the positive electrode of the state switching circuit, the other end of the eighth resistor and the source of the first MOS tube are connected, and the connection end of the eighth resistor and the fifth MOS tube is the state of the state switching circuit The other end of the fifth resistor is connected with the drain electrode of the first MOS tube, the grid electrode of the first MOS tube, the other end of the sixth resistor and the 1 st pin of the second integrated circuit chip are connected, the 4 th pin of the second integrated circuit chip is connected with one end of the second capacitor, the 2 nd pin of the second integrated circuit chip, the other end of the second capacitor and the source electrode of the second MOS tube are connected, the connecting end of the second integrated circuit chip is the grounding end of the state conversion circuit, the 6 th pin of the second integrated circuit chip, the other end of the seventh resistor and the grid electrode of the second MOS tube are connected, and the drain electrode of the second MOS tube is the first output end of the state conversion circuit.
Rectifier circuit adopt full-bridge rectifier circuit chip to realize, full-bridge rectifier circuit chip's the 1 st foot do rectifier circuit's live wire input, full-bridge rectifier circuit chip's the 3 rd foot do rectifier circuit's zero line input, full-bridge rectifier circuit chip's the 2 nd foot do rectifier circuit's output, full-bridge rectifier circuit chip's the 4 th foot do rectifier circuit's earthing terminal.
The power conversion circuit is realized by adopting a constant-voltage constant-current conversion circuit mature in the industry, and the first LED light-emitting module and the second LED light-emitting module are processed by adopting the existing mature process.
The storage battery is realized by adopting a lithium battery core. In this structure, the storage battery has a large capacity and a small volume, and can be repeatedly charged and discharged.
Compared with the prior art, the utility model has the advantages of through setting up state conversion circuit, state conversion circuit adopts the circuit realization that can vary output state according to control switch's operation control, and the positive pole that detects control circuit, battery and first LED light emitting module's negative pole is connected with state conversion circuit respectively, and state conversion circuit has two kinds of output states when emergent LED lamp circuit normally inserts the commercial power: a lighting charging output state and a lighting-off charging output state, when the state converting circuit is in the lighting charging output state, the state converting circuit is used for converting the DC voltage output by the power converting circuit into the lighting charging current output, and making the first LED light-emitting module have current flowing through and emit light, when the state converting circuit is in the lighting-off charging output state, the state converting circuit is used for converting the DC voltage output by the power converting circuit into the lighting-off charging current output, and making the first LED light-emitting module have no current flowing through and do not emit light, the lighting-off charging current is larger than the lighting-on charging current, when the state converting circuit is in the lighting-off charging state or the lighting-on charging state, if the storage battery is in the charging state at the moment, the storage battery is connected to the lighting-off charging current or the lighting-on charging current output by the state converting circuit, because the state converting circuit can convert the output state according to the operation control of the control switch, control switch is on the closed operation of original switching on and the disconnection operation basis of turning off the lamp, can increase the state switching operation between the operation of switching on and the operation of turning off the lamp, because the closed time of control switch is very long behind the operation of switching on, and the disconnection time of control switch is also longer when the operation of turning off the lamp, the state switching can be between the two, under the switch closure condition, emergent LED circuit is normally luminous, state conversion circuit is in the output state that charges of lighting a lamp, if at this moment carry out the state switching, can break off control switch earlier then closed control switch in the settlement time, state conversion circuit detects control switch's disconnection closed operation this moment, switch over to the state of charging of turning off the lamp, therefore the utility model discloses on simple structure, on the lower basis of cost, can also charge the state of turning off the lamp, can not produce the electric energy waste when charging.
Drawings
Fig. 1 is a block diagram of a conventional emergency LED lamp circuit;
fig. 2 is a block diagram of the emergency LED lamp circuit of the present invention;
fig. 3 is a circuit diagram of the emergency LED lamp circuit 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 emergency LED lamp circuit capable of charging in a light-off state includes a rectifying circuit, a power conversion circuit, a first LED lighting module M1, a second LED lighting module M2, a detection control circuit and a storage battery, where the storage battery, the first LED lighting module M1 and the second LED lighting module M2 respectively have a positive electrode and a negative electrode, the rectifying circuit is configured to convert an ac voltage of an incoming mains supply into a dc voltage for output, the power conversion circuit is configured to convert the dc voltage output by the rectifying circuit into a dc voltage for output, the dc voltage and the dc current are respectively generated for output, the positive electrode of the first LED lighting module M1 is configured to be connected to a dc current output by the power conversion circuit, the positive electrode of the storage battery, the negative electrode of the storage battery and the positive electrode of the second LED lighting module M2 are respectively connected to the detection control circuit, and the storage battery can provide electric energy required for lighting for the second LED lighting module M2 under the control of the detection control, the detection control circuit is used for detecting whether voltage input exists between a live wire input end and a zero line input end of the emergency LED lamp circuit or not, judging whether a conductive loop exists outside the emergency LED lamp circuit or not when no voltage input exists, when the emergency LED lamp circuit is connected to mains supply voltage and a storage battery is not fully charged, the detection control circuit controls the storage battery to enter a charging state, and when the storage battery is fully charged, the detection control circuit controls the storage battery to enter a charging stop state; when the commercial power alternating voltage is not connected to the emergency LED lamp circuit, the first LED light-emitting module M1 does not emit light, if no conduction loop exists between the live wire input end and the zero line input end of the emergency LED lamp circuit, the detection control circuit controls the storage battery not to provide power for the second LED light-emitting module M2, the second LED light-emitting module M2 does not emit light, if a conductive loop is arranged between the live wire input end and the zero wire input end of the emergency LED lamp circuit, the detection control circuit controls the storage battery to provide electric energy for the second LED light-emitting module M2, the second LED light-emitting module M2 emits light, the emergency LED lamp circuit further comprises a state conversion circuit, the state conversion circuit is realized by adopting a circuit capable of converting output states according to operation control of a control switch, the detection control circuit, the anode of the storage battery and the cathode of the first LED light-emitting module M1 are respectively connected with the state conversion circuit, and the state conversion circuit has two output states when the emergency LED lamp circuit is normally connected with commercial power: the power conversion circuit comprises a lighting charging output state and a lighting charging output state, when the state conversion circuit is in the lighting charging output state, the state conversion circuit is used for converting direct-current voltage output by the power conversion circuit into lighting charging current output, and enabling current to flow through the first LED light-emitting module M1 to emit light, when the state conversion circuit is in the lighting charging output state, the state conversion circuit is used for converting the direct-current voltage output by the power conversion circuit into lighting-off charging current output, enabling no current to flow through the first LED light-emitting module M1 to not emit light, and enabling the lighting-off charging current to be larger than the lighting-on charging current, and when the state conversion circuit is in the lighting-off charging state or the lighting-on charging state, if the storage battery is in the charging state at the moment, the storage battery is connected to the lighting-off charging current or the lighting-on charging current output by the state.
In this embodiment, as shown in fig. 2, the rectifying circuit has a live wire input terminal, a zero wire input terminal, an output terminal and a ground terminal, the power conversion circuit has an input terminal, a first output terminal, a second output terminal and a ground terminal, the detection control circuit has a live wire input terminal, a zero wire input terminal, a positive terminal, a control terminal, an output terminal and a ground terminal, the state conversion circuit has a detection terminal, a positive terminal, a first output terminal, a second output terminal and a ground terminal, the live wire input terminal of the rectifying circuit is connected with the live wire input terminal of the detection control circuit and its connection terminal is the live wire input terminal of the emergency LED lamp circuit, the zero wire input terminal of the rectifying circuit is connected with the zero wire input terminal of the detection control circuit and its connection terminal is the zero wire input terminal of the emergency LED lamp circuit, the output terminal of the rectifying circuit is connected with the input terminal of, the first output end of the power conversion circuit is connected with the positive electrode of the first LED luminous module M1, the second output end of the power conversion circuit is connected with the positive electrode of the state conversion circuit, the negative electrode of the first LED luminous module M1 is connected with the first output end of the state conversion circuit, the second output end of the state conversion circuit is respectively connected with the positive electrode of the detection control circuit and the positive electrode of the storage battery, the control end of the detection control circuit is connected with the negative electrode of the storage battery, the output end of the detection control circuit is connected with the positive electrode of the second LED luminous module M2, the grounding end of the power conversion circuit, the grounding end of the state conversion circuit, the grounding end of the detection control circuit, the negative electrode of the second LED luminous module M2 and the grounding end of the rectification circuit are connected. When the state switching circuit is in the light-up charging output state, the first output end of the state switching circuit is conducted to the ground, at this time, current flows through the first LED light-emitting module M1 to emit light, at this time, the second output end of the state switching circuit outputs light-up charging voltage, when the state switching circuit is in the light-down charging output state, the first output end of the state switching circuit is cut off to the ground, at this time, the current flowing through the first LED light-emitting module M1 is zero, the first LED light-emitting module M1 does not emit light, and the second output end of the state switching circuit outputs light-down charging voltage. The state conversion circuit can change the output state of the control switch connected to the mains supply line through switching operation. The operation of the control switch is divided into a light-on operation, a light-off operation, and a state switching operation. The normal light-on operation and light-off operation are defined as that when the off time of the control switch is more than or equal to the specified time, the control switch is closed to be the light-on operation; and when the switch is closed, the switch is opened again, and the lamp-off operation is carried out when the opening state of the switch is kept to be more than or equal to the specified time. The state switching operation of the state switching circuit is realized by continuous actions of switching off and then switching on the control switch, and the defined switching operation is as follows: in the case where the control switch is closed, the control switch is first opened and then closed in less than a prescribed time. When the control switch is used for switching on the lamp, the emergency LED circuit is switched on, the emergency LED lamp circuit is connected with alternating voltage, the emergency LED lamp is normally lightened, and the state conversion circuit enters a light charging output state to charge the internal storage battery by using smaller current. At the moment, if the state switching operation is carried out once through the control switch, the state control circuit enters a light-off charging output state, the emergency LED lamp circuit is not on at the moment, and the state control circuit outputs larger current to charge the storage battery. If the state switching operation is performed again, the state control circuit enters the lighting charging output state again, and the output state of the state switching circuit can be changed cyclically by performing the state switching operation. When the detection control circuit detects that the mains supply voltage is connected, the output end of the detection control circuit does not output voltage, meanwhile, the control end of the detection control circuit is conducted to the ground, the negative electrode of the storage battery is grounded, the direct-current voltage output by the second output end of the power conversion circuit charges the storage battery through the second output end of the state conversion circuit, the detection control circuit detects the voltage between the positive electrode and the negative electrode of the storage battery in real time, when the voltage between the positive electrode and the negative electrode of the storage battery is smaller than the rated charging voltage, the storage battery keeps a charging state, and when the voltage between the two ends of the storage battery is detected to be larger than or equal to the rated charging voltage, the control end of the detection control. When the detection control circuit detects that no mains voltage is connected and no conducting circuit is arranged between the live wire input end and the zero line input end of the emergency LED lamp circuit outside the emergency LED lamp circuit, namely when the detection control circuit detects that the connection mains control switch is in a disconnected state, the output end of the emergency LED lamp circuit is cut off and does not output voltage, and at the moment, the second LED circuit does not emit light. When the detection control circuit detects that no mains voltage is connected, and a conduction loop is arranged between the live wire input end and the zero line input end of the emergency LED lamp circuit and outside the emergency LED lamp, namely the control switch is in a closed state, the storage battery and the detection control circuit form a power supply loop, and the output end of the detection control circuit outputs direct-current voltage to enable the second LED circuit to emit light.
In this embodiment, as shown in fig. 3, the detection control circuit includes a first integrated circuit chip U1, a first resistor R1, a second resistor R2, a third resistor R3, and a first capacitor C1, the first integrated circuit chip U1 is implemented by an emergency lamp dedicated detection chip with a model number QW2886, one end of the first resistor R1 is a live wire input end of the detection control circuit, one end of the second resistor R2 is a zero wire input end of the detection control circuit, the other end of the first resistor R1 is connected to the 8 th pin of the first integrated circuit chip U1, the other end of the second resistor R2 is connected to the 1 st pin of the first integrated circuit chip U1, one end of the third resistor R3 is an output end of the detection control circuit, the other end of the third resistor R3 is connected to the 3 rd pin of the first integrated circuit chip U1, the 6 th pin of the first integrated circuit chip U1 is connected to one end of the first capacitor C1, and the connection end of the detection control circuit is a positive terminal of the detection control circuit, the 5 th pin of the first integrated circuit chip U1 is connected to the other end of the first capacitor C1, and the connection terminal thereof is the control terminal of the detection control circuit, and the 4 th pin of the first integrated circuit chip U1 is the ground terminal of the detection control circuit.
In this embodiment, as shown in fig. 3, the state switching circuit includes a second integrated circuit chip U2, a first diode D1, a second capacitor C2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first MOS transistor Q1 and a second MOS transistor Q2, the second integrated circuit chip U2 is implemented by a chip of model S4223, packaged as SOT23, the first diode D1 is a rectifier diode, the anode of the first diode D1 is the detection end of the state switching circuit, the cathode of the first diode D1 is connected with one end of the fourth resistor R9, the other end of the fourth resistor R4 is connected with the 5 th pin of the second integrated circuit chip U2, one end of the eighth resistor R8, one end of the fifth resistor R5, one end of the sixth resistor R6 and one end of the seventh resistor R7 are connected, the positive connection end of the first resistor R7 is connected with the first output end of the first integrated circuit chip U8, and the source of the first switch is connected with the first diode Q8, the other end of the fifth resistor R5 is connected with the drain of the first MOS transistor Q1, the gate of the first MOS transistor Q1, the other end of the sixth resistor R6 is connected with the 1 st pin of the second integrated circuit chip U2, the 4 th pin of the second integrated circuit chip U2 is connected with one end of the second capacitor C2, the 2 nd pin of the second integrated circuit chip U2 and the other end of the second capacitor C2 are connected with the source of the second MOS transistor Q2, the connection end of the connection end is the ground end of the state conversion circuit, the 6 th pin of the second integrated circuit chip U2, the other end of the seventh resistor R7 are connected with the gate of the second MOS transistor Q2, and the drain of the second MOS transistor Q2 is the first output end of the state conversion circuit.
In this embodiment, as shown in fig. 3, the rectifier circuit is implemented by using a full-bridge rectifier circuit chip DB, the 1 st pin of the full-bridge rectifier circuit chip DB is the live wire input end of the rectifier circuit, the 3 rd pin of the full-bridge rectifier circuit chip DB is the zero line input end of the rectifier circuit, the 2 nd pin of the full-bridge rectifier circuit chip DB is the output end of the rectifier circuit, and the 4 th pin of the full-bridge rectifier circuit chip DB is the ground end of the rectifier circuit.
In this embodiment, as shown in fig. 3, the power conversion circuit is implemented by a constant voltage and constant current conversion circuit mature in the industry, and the first LED lighting module M1 and the second LED lighting module M2 are both processed by a mature process.
In the embodiment, as shown in fig. 3, the storage battery is implemented by using a lithium battery cell BT 1.
Claims (7)
1. An emergency LED lamp circuit capable of being charged in a light-off state comprises a rectifying circuit, a power conversion circuit, a first LED light-emitting module, a second LED light-emitting module, a detection control circuit and a storage battery, wherein the storage battery, 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 rectifying circuit is used for converting an accessed mains supply alternating current voltage into a direct current voltage for output, the power conversion circuit is used for converting the direct current voltage output by the rectifying circuit and then respectively generating a direct current voltage and a direct current output, the positive electrode of the first LED light-emitting module is used for accessing a direct current output by the power conversion circuit, the positive electrode of the storage battery, the negative electrode of the storage battery and the positive electrode of the second LED light-emitting module are respectively connected with the detection control circuit, the detection control circuit is used for detecting whether voltage input exists between a live wire input end and a zero line input end of the emergency LED lamp circuit, and can judge whether a conductive loop exists outside the emergency LED lamp circuit when no voltage input exists; when the commercial power alternating voltage is not connected to the emergency LED lamp circuit, the first LED light-emitting module does not emit light, if a conduction loop does not exist between the live wire input end and the zero line input end of the emergency LED lamp circuit, the detection control circuit controls the storage battery not to provide electric energy for the second LED light-emitting module, the second LED light-emitting module does not emit light, if a conduction loop exists between the live wire input end and the zero line input end of the emergency LED lamp circuit, the detection control circuit controls the storage battery to provide electric energy for the second LED light-emitting module, and the second LED light-emitting module emits light The positive pole of the storage battery and the negative pole of the first LED light-emitting module are respectively connected with the state conversion circuit, and the state conversion circuit has two output states when the emergency LED lamp circuit is normally connected with commercial power: a lighting charging output state and a lighting-off charging output state, when the state converting circuit is in the lighting charging output state, the state converting circuit is used for converting the direct-current voltage output by the power converting circuit into a lighting charging current output, and making the first LED light-emitting module have a current flowing and emit light, when the state converting circuit is in the lighting-off charging output state, the state converting circuit is used for converting the direct-current voltage output by the power converting circuit into a lighting-off charging current output, and making the first LED light-emitting module have no current flowing and do not emit light, the lighting-off charging current is larger than the lighting-on charging current, when the state converting circuit is in the lighting-off charging state or the lighting-on charging state, if the storage battery is in the charging state at this time, the storage battery is connected to the lighting-off charging current or the lighting-on charging current output by the state converting circuit And charging is carried out.
2. The emergency LED lamp circuit according to claim 1, wherein the rectifying circuit has a live wire input terminal, a neutral wire input terminal, an output terminal and a ground terminal, the power converting circuit has an input terminal, a first output terminal, a second output terminal and a ground terminal, the detection control circuit has a live wire input terminal, a neutral wire input terminal, an anode, a control terminal, an output terminal and a ground terminal, the state converting circuit has a detection terminal, an anode, a first output terminal, a second output terminal and a ground terminal, the live wire input terminal of the rectifying circuit is connected to the live wire input terminal of the detection control circuit and the connection terminal thereof is the live wire input terminal of the emergency LED lamp circuit, the neutral wire input terminal of the rectifying circuit is connected to the neutral wire input terminal of the detection control circuit and the connection terminal thereof is the neutral wire input terminal of the emergency LED lamp circuit, the detection end of the state conversion circuit is connected with the live wire input end or the zero line input end of the emergency LED lamp circuit, the output end of the rectification circuit is connected with the input end of the power conversion circuit, the first output end of the power conversion circuit is connected with the anode of the first LED light-emitting module, the second output end of the power conversion circuit is connected with the anode of the state conversion circuit, the cathode of the first LED light-emitting module is connected with the first output end of the state conversion circuit, the second output end of the state conversion circuit is respectively connected with the anode of the detection control circuit and the anode of the storage battery, the control end of the detection control circuit is connected with the cathode of the storage battery, and the output end of the detection control circuit is connected with the anode of the second LED light-emitting module, the ground terminal of the power conversion circuit, the ground terminal of the state conversion circuit, the ground terminal of the detection control circuit, and the cathode of the second LED light-emitting module are connected with the ground terminal of the rectification circuit.
3. The emergency LED lamp circuit according to claim 2, wherein the detection control circuit comprises a first ic chip, a first resistor, a second resistor, a third resistor and a first capacitor, the first ic chip is implemented by an emergency lamp dedicated detection chip with model number QW2886, one end of the first resistor is a live input terminal of the detection control circuit, one end of the second resistor is a neutral input terminal of the detection control circuit, the other end of the first resistor is connected to pin 8 of the first ic chip, the other end of the second resistor is connected to pin 1 of the first ic chip, one end of the third resistor is an output terminal of the detection control circuit, and the other end of the third resistor is connected to pin 3 of the first ic chip, the 6 th pin of the first integrated circuit chip is connected with one end of the first capacitor, the connecting end of the first integrated circuit chip is the anode of the detection control circuit, the 5 th pin of the first integrated circuit chip is connected with the other end of the first capacitor, the connecting end of the first integrated circuit chip is the control end of the detection control circuit, and the 4 th pin of the first integrated circuit chip is the grounding end of the detection control circuit.
4. The emergency LED lamp circuit as claimed in claim 2, wherein the state switching circuit comprises a second ic chip, a first diode, a second capacitor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first MOS transistor and a second MOS transistor, the second ic chip is implemented as a chip packaged as SOT23 in a type S4223T, the first diode is a rectifier diode, the anode of the first diode is the detection terminal of the state switching circuit, the cathode of the first diode is connected to one terminal of the fourth resistor, the other terminal of the fourth resistor is connected to the 5 th pin of the second ic chip, one terminal of the eighth resistor, one terminal of the fifth resistor, one terminal of the sixth resistor and one terminal of the seventh resistor are connected, and the connection terminal is the connection terminal of the state switching circuit The other end of the eighth resistor is connected with the source electrode of the first MOS transistor, and the connecting end of the eighth resistor is the second output end of the state switching circuit, the other end of the fifth resistor is connected with the drain electrode of the first MOS tube, the grid electrode of the first MOS tube and the other end of the sixth resistor are connected with the 1 st pin of the second integrated circuit chip, the 4 th pin of the second integrated circuit chip is connected with one end of the second capacitor, the 2 nd pin of the second integrated circuit chip and the other end of the second capacitor are connected with the source electrode of the second MOS tube, and the connecting end of the connecting end is the grounding end of the state switching circuit, the 6 th pin of the second integrated circuit chip and the other end of the seventh resistor are connected with the grid electrode of the second MOS tube, and the drain electrode of the second MOS tube is the first output end of the state conversion circuit.
5. The emergency LED lamp circuit according to claim 2, wherein the rectifier circuit is implemented by a full-bridge rectifier circuit chip, the pin 1 of the full-bridge rectifier circuit chip is the live wire input terminal of the rectifier circuit, the pin 3 of the full-bridge rectifier circuit chip is the zero wire input terminal of the rectifier circuit, the pin 2 of the full-bridge rectifier circuit chip is the output terminal of the rectifier circuit, and the pin 4 of the full-bridge rectifier circuit chip is the ground terminal of the rectifier circuit.
6. The emergency LED lamp circuit according to claim 2, wherein the power conversion circuit is implemented by a constant voltage and constant current conversion circuit mature in the industry, and the first LED light emitting module and the second LED light emitting module are processed by a mature process.
7. The emergency LED lamp circuit according to claim 2, wherein the battery is implemented as a lithium battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921985972.5U CN211267175U (en) | 2019-11-18 | 2019-11-18 | Emergency LED lamp circuit capable of being charged in light-off state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921985972.5U CN211267175U (en) | 2019-11-18 | 2019-11-18 | Emergency LED lamp circuit capable of being charged in light-off state |
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| CN211267175U true CN211267175U (en) | 2020-08-14 |
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| CN201921985972.5U Active CN211267175U (en) | 2019-11-18 | 2019-11-18 | Emergency LED lamp circuit capable of being charged in light-off state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365390A (en) * | 2021-07-01 | 2021-09-07 | 惠州市学力派电子有限公司 | Rechargeable desk lamp |
| US11923720B1 (en) * | 2023-05-11 | 2024-03-05 | Guangzhou Jiguang Lighting Co., Ltd. | Emergency light |
-
2019
- 2019-11-18 CN CN201921985972.5U patent/CN211267175U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113365390A (en) * | 2021-07-01 | 2021-09-07 | 惠州市学力派电子有限公司 | Rechargeable desk lamp |
| CN113365390B (en) * | 2021-07-01 | 2021-11-23 | 惠州市学力派电子有限公司 | Rechargeable desk lamp |
| US11923720B1 (en) * | 2023-05-11 | 2024-03-05 | Guangzhou Jiguang Lighting Co., Ltd. | Emergency light |
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