CN203632943U - LED energy storage driving system with reusable AC-DC converter - Google Patents
LED energy storage driving system with reusable AC-DC converter Download PDFInfo
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- CN203632943U CN203632943U CN201320879096.4U CN201320879096U CN203632943U CN 203632943 U CN203632943 U CN 203632943U CN 201320879096 U CN201320879096 U CN 201320879096U CN 203632943 U CN203632943 U CN 203632943U
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Abstract
The utility model relates to an LED energy storage driving system with a reusable AC-DC converter. The AC-DC converter adopted by the LED energy storage driving system has a reusable function which is manifested in that during the alternating current power supply, direct current voltage output by the AC-DC converter is converted into a constant current source via a DC-DC converter, and the constant current source supplies power to an LED and also can charge a lithium battery set; a lithium battery set charging protection module automatically stops charging after the lithium battery set is fully charged; and during non-alternating current power supply, direct current voltage output by the lithium battery set is converted into a constant current source through the DC-DC converter so as to supply power to the LED. Conversion of two kinds of working modes is completed by an MOS tube control module. As the LED energy storage driving system can simultaneously carry out charging and power supplying, alternating current illumination cannot be affected when the lithium battery set is charged. Without alternating current, the lithium battery set can supply power to the LED for a long time. The whole LED energy storage driving system is simplified in structure and low in cost.
Description
Technical field
The utility model relates to a kind of LED energy storage driving power, particularly has the LED energy storage drive system of reusable AC-DC converter.
Background technology
Along with social development, people sharply increase the demand of electric power, but due to resource-constrained, electric power often shows a deficiency, and have had a strong impact on people's normal life.In addition, fault is also a great problem that affects normal power supply.Thereby the technology of electric power energy-saving and electric power energy storage aspect becomes current study hotspot.Under this background, the energy storage LED lighting technology with series of advantages such as efficient, energy-saving and environmental protection is arisen at the historic moment.
In technology in the past, LED can not charge when energy-storage system illumination to, can not allow LED illumination have a strong impact on the use value of whole technology when energy-storage system charging simultaneously.Design has simultaneously can be extremely urgent to the circuit of LED power supply and energy-storage system charging.In addition, the switching problem between energy storage and illumination is never well solved.When energy storage, throw light on and be difficult to automatic control always, and complicated MCU control module has not only increased the circuit difficulty of whole system, also makes cost of manufacture very expensive, and practicality is not high, is unfavorable for the marketization of product.
Utility model content
The problem existing for background technology, the utility model provides a kind of LED energy storage drive system with reusable AC-DC converter.
For achieving the above object, the technical solution of the utility model is:
A LED energy storage drive system with reusable AC-DC converter, is characterized in that, comprising:
One AC-DC converter: convert direct current signal to for AC signal;
One lithium battery group charging protecting module: for store electrical energy and protection lithium battery group;
One metal-oxide-semiconductor control module: for switching powering mode;
One DC-DC converter: supply with LED illuminating lamp for converting the direct voltage of AC-DC converter and the output of lithium battery group charging protecting module to constant-current source;
Wherein, AC-DC converter is connected with lithium battery group charging protecting module, metal-oxide-semiconductor control module and DC-DC converter; Lithium battery group charging protecting module is connected with metal-oxide-semiconductor control module with AC-DC converter; Metal-oxide-semiconductor control module is connected with lithium battery group charging protecting module, AC-DC converter and DC-DC converter; DC-DC converter is connected with LED illuminating lamp with metal-oxide-semiconductor control module.
In the above-mentioned LED energy storage drive system with reusable AC-DC converter, described AC-DC converter comprises the interior control module of first and the main topography module being connected with control module in first; In first, control module comprises electric power management circuit, abnormity of power supply decision circuitry, thermal protection circuit, overvoltage crowbar, abnormity protection circuit, the first NAND gate, the first rest-set flip-flop, started with high voltage and constant current circuit, slope drive current circuit, triode NT2, metal-oxide-semiconductor NM1, metal-oxide-semiconductor NM2, the first comparator, resistance R 4, resistance R 5, peak current protective circuit, trembles frequency control circuit, oscillator circuit, frequency conversion control circuit, optocoupler inefficacy decision circuitry, current source; In described first, control module comprises eight interfaces;
Wherein, electric power management circuit is connected with abnormity of power supply decision circuitry; Abnormity of power supply decision circuitry, thermal protection circuit and overvoltage crowbar are connected with abnormity protection circuit; Abnormity protection circuit is also connected with optocoupler inefficacy decision circuitry, peak current protective circuit and the first NAND gate; The input of the first NAND gate connects respectively abnormity protection circuit and the first comparator, output termination the first rest-set flip-flop; S termination first NAND gate of the first rest-set flip-flop, R termination oscillator circuit, output Q meets slope drive current circuit and metal-oxide-semiconductor NM2; Started with high voltage and constant current circuit connects respectively the collector electrode of slope drive current circuit and triode NT2; Slope drive current circuit connects respectively the base stage of grid and the triode NT2 of the first rest-set flip-flop, metal-oxide-semiconductor NM2; The collector electrode of triode NT2 connects started with high voltage and constant current circuit, and base stage connects slope drive current circuit, and emitter connects the drain electrode of metal-oxide-semiconductor NM2; The drain electrode of NM1 connects peak value protective circuit, and grid connects oscillator circuit, source ground; The drain electrode of metal-oxide-semiconductor NM2 connects the source electrode of triode NT2, and grid connects the first rest-set flip-flop, source electrode connecting resistance R5; The positive termination 0.2V voltage of the first comparator, negative pole connecting resistance R4, output termination the first NAND gate; Resistance R 4 two ends connect respectively the first comparator and resistance R 5; The two ends of resistance R 5 are connecting resistance R4 and ground respectively; Peak current protective circuit one termination abnormity protection circuit, another termination R4; Tremble frequency control circuit and connect oscillator circuit; Oscillator circuit connects the grid of trembling frequency control circuit, frequency conversion control circuit, the first rest-set flip-flop and NM1; Frequency conversion control circuit connects oscillator circuit and current source; Optocoupler inefficacy decision circuitry connects abnormity protection circuit and current source; Current source one termination optocoupler inefficacy decision circuitry, other end ground connection; Interface one and interface two ground connection of control module in described first; Interface three connects variable frequency control and optocoupler inefficacy circuit; Interface four connects electric power management circuit; Interface five to eight connects the collector electrode of started with high voltage and constant current circuit and NT2;
Described main topography module comprises full bridge rectifier, input filter circuit, current rectifying and wave filtering circuit, transformer T1, output rectification circuit and feedback loop; One end of full bridge rectifier is connected with AC-input voltage, and one end connects input filter circuit; Input filter circuit one termination full bridge rectifier, the other end is connected with current rectifying and wave filtering circuit; Current rectifying and wave filtering circuit one end is connected with input filter circuit, and the other end is connected with transformer T1; Transformer T1 is connected with output rectification circuit with current rectifying and wave filtering circuit respectively; Output rectification circuit is connected with feedback loop with transformer T1; Feedback loop and output rectification circuit are connected with control module in first.
In the above-mentioned LED energy storage drive system with reusable AC-DC converter, comprise the outer topological structure of sheet and second interior control module described in described DC-DC converter; The outer topological structure circuit of sheet comprises input filter capacitor C8, inductance L 2, rectifier diode ZD2, output capacitance C9, LED lamp and feedback resistance R8; Wherein input filter capacitor C mono-termination input, one end ground connection; One termination input of inductance L 2, the anode of another termination rectifier diode ZD2; The anode of rectifier diode ZD2 connects inductance, and negative electrode meets output capacitance C9; The negative electrode of output capacitance C9 mono-terminating diode ZD2, other end ground connection; The anode of LED lamp meets output capacitance C9, negative electrode connecting resistance R6; One termination LED lamp of feedback resistance, other end ground connection;
Second interior control module comprises overvoltage crowbar, overheated breaking circuit, MOS drive circuit, overcurrent protection comparator, the second rest-set flip-flop, undervoltage lockout circuit, soft start, the second comparator, oscillator, 2.5V pressurizer, 0.22V reference voltage, error amplifier, phase compensating circuit, metal-oxide-semiconductor NM3, resistance R 7; Described second interior control module comprises five interfaces;
Wherein, the drain electrode of overvoltage crowbar one termination NM3, termination second rest-set flip-flop; Overheated breaking circuit connects the second rest-set flip-flop; MOS drive circuit one termination the second rest-set flip-flop, the grid of another termination NM3; The positive input terminal connecting resistance R7 of overcurrent protection comparator, negative input end ground connection, output termination the second rest-set flip-flop; The second rest-set flip-flop is connected with oscillator, overcurrent protection comparator, MOS drive circuit, overheated breaking circuit, overvoltage crowbar and the second comparator respectively; Undervoltage lockout circuit is connected with soft start with 2.5V pressurizer, 0.22V reference voltage respectively; Soft start is connected with error amplifier with undervoltage lockout circuit respectively; The positive input termination oscillator of the second comparator, negative input termination error amplifier, output termination the second rest-set flip-flop; Oscillator is connected with the second rest-set flip-flop with comparator respectively; 2.5V pressurizer one termination undervoltage lockout circuit, another termination 0.22V reference voltage; 0.22V reference voltage one termination 2.5V pressurizer, another termination error amplifier; The positive input termination 0.22V reference voltage of error amplifier, the interface five of second interior control module of negative input termination, output termination phase compensating circuit; Phase compensating circuit is connected with the second comparator with error amplifier; Drain electrode, grid and the source electrode of NM3 is connected with R7 with overvoltage crowbar, MOS drive circuit respectively; Stream protection comparator, other end ground connection are taken in one end of R7; Interface one ground connection of described second interior control module; Interface two connects undervoltage lockout circuit; ; Interface three is taken over voltage protection circuit and NM3 drain terminal; ; Interface four connects 2.5V pressurizer and under-voltage locking; ; Interface five connects the negative input end of error amplifier.
In the above-mentioned LED energy storage drive system with reusable AC-DC converter, described lithium battery group charging protecting module comprises that input filter circuit, charging indication, switching circuit, rectification circuit, current control circuit, current detection circuit, temperature-control circuit, charging finish circuit and the 3rd interior control module; Wherein input filter circuit is connected with switching circuit with the VG end of the 3rd interior control module; Charging indication one end is connected with input filter circuit, and the other end is connected with the 3rd interior control module; Switching circuit is connected with rectification circuit with the 3rd interior control module, input filter circuit respectively; Rectification circuit is connected with current control circuit with switching circuit respectively; Current control circuit one termination rectification circuit, control module in other end contact pin; Current detection circuit one end ground connection, the 3rd interior control module of another termination; Temperature-control circuit and charging finish the 3rd interior control module of circuit one termination, one end ground connection.
In the above-mentioned LED energy storage drive system with reusable AC-DC converter, described metal-oxide-semiconductor control module comprises control switch PM1 and diode D7; Wherein the source electrode of PM1, grid and drain electrode connect respectively output, the output of AC-DC variator and the anode of diode D7 of lithium battery group charging protecting module; The anode of diode D7 connects the drain electrode of PM1, and negative electrode connects the input of DC-DC converter.
Therefore, the utlity model has following advantage: 1.AC-DC converter reusable, can charge simultaneously and power, practical.2. handover module is only containing a metal-oxide-semiconductor and diode, and structure is very simple, and switches effective.3. in powering mode, all adopt DC-DC converter, obtained stable constant-current source, make the LED can long-life work under healthy environment.
Accompanying drawing explanation
Fig. 1 is a kind of LED energy storage drive system overall diagram with reusable AC-DC variator.
Fig. 2 is AC-DC converter circuit schematic diagram.
Fig. 3 is the functional block diagram of the interior control module of sheet of AC-DC converter.
Fig. 4 is the circuit theory diagrams of DC-DC converter.
Fig. 5 is the functional block diagram of the interior control module of sheet of DC-DC converter.
Fig. 6 is lithium battery group charge management module circuit diagram.
Fig. 7 is MOS control and management module.
Embodiment
For more well-known explanation the purpose of this utility model, technical scheme and advantage, below in conjunction with drawings and Examples, the utility model is further detailed.
A kind of LED energy storage drive system with reusable AC-DC variator as shown in Figure 1, comprising: by AC signal convert to AC-DC converter, store electrical energy and the protection lithium battery group of direct current signal lithium battery group charging protecting module, switch the metal-oxide-semiconductor control module of powering mode and the direct voltage of AC-DC converter and the output of lithium battery group charging protecting module converted to constant-current source and supplies with the DC-DC converter of LED illuminating lamp; Wherein, AC-DC converter is connected with lithium battery group charging protecting module, metal-oxide-semiconductor control module and DC-DC converter; Lithium battery group charging protecting module is connected with metal-oxide-semiconductor control module with AC-DC converter; Metal-oxide-semiconductor control module is connected with lithium battery group charging protecting module, AC-DC converter and DC-DC converter; DC-DC converter is connected with LED illuminating lamp with metal-oxide-semiconductor control module.
Fig. 2 is the circuit diagram of AC-DC converter, is made up of control module in main topography module and first, and the circuit in first outside control module all belongs to main topography module.
Main topography module comprises full bridge rectifier, input filter circuit, current rectifying and wave filtering circuit, transformer T1, output rectification circuit and feedback loop.As shown in Figure 2, the embodiment of main topography module is as follows:
Full bridge rectifier is made up of diode D1, D2, D3 and D4, and the high-voltage AC signal of the main topography module of input is converted to the high-voltage dc signal that ripple is larger.
Input filter circuit is made up of capacitor C 1, for reducing the ripple of high-voltage dc signal.
Current rectifying and wave filtering circuit is made up of resistance R 1, diode D5 and capacitor C 4.Can be to the further filtering of input signal.
Transformer T1 is the size with the turn ratio control output voltage of secondary coil by sideline, source circle, thereby high-voltage signal is converted to low-voltage signal.
Output rectification circuit is made up of diode D6, capacitor C 5, C6, inductance L 1 and resistance R 3.The high frequency low voltage signal that transformer transmission can be come is converted to DC low-voltage signal.
Feedback loop comprises resistance R 2, Schottky diode ZD1, capacitor C 2, C3 and optocoupler.The size of output voltage is fed back in time control module in first by it, and in first, control module is adjusted the size of output voltage in time according to the size of feedback voltage.
In first, as shown in Figure 3, in first, control module comprises electric power management circuit, abnormity of power supply decision circuitry, thermal protection circuit, overvoltage crowbar, abnormal protection, the first NAND gate, the first rest-set flip-flop, started with high voltage and constant current circuit, slope drive current circuit, triode NT2, metal-oxide-semiconductor NM1, NM2, the first comparator, resistance R 4, R5, peak current protective circuit, trembles frequency control circuit, oscillator circuit, frequency conversion control circuit, optocoupler inefficacy decision circuitry and current source control module.Embodiment is as follows:
Electric power management circuit is connected with abnormity of power supply decision circuitry; Abnormity of power supply decision circuitry, thermal protection circuit and overvoltage crowbar are connected with abnormal protection; Abnormal protection is also connected with optocoupler inefficacy decision circuitry, peak current protective circuit and the first NAND gate; The input of the first NAND gate connects respectively abnormal protection and the first comparator, output termination the first rest-set flip-flop; S termination first NAND gate of the first rest-set flip-flop, R termination oscillator circuit, output Q meets slope drive current circuit and metal-oxide-semiconductor NM2; Started with high voltage and constant current circuit connects respectively the collector electrode of slope drive current circuit and NT2; Slope drive current circuit connects respectively the base stage of grid and the NT2 of the first rest-set flip-flop, NM2; The collector electrode of NT2 connects started with high voltage and constant current circuit, and base stage connects slope drive current circuit, and emitter connects the drain electrode of NM2; The drain electrode of NM1 connects peak value protective circuit, and grid connects oscillator circuit, source ground; The drain electrode of NM2 connects the source electrode of NT2, and grid connects the first rest-set flip-flop, and source electrode meets R5; The positive termination 0.2V voltage of the first comparator, negative pole meets R4, output termination the first NAND gate; R4 two ends meet respectively the first comparator and R5; The two ends of R5 connect respectively R4 and ground; Peak current protective circuit one termination abnormal protection, another termination R4; Tremble frequency control circuit and connect oscillator circuit; Oscillator circuit connects the grid of trembling frequency control circuit, frequency conversion control circuit, the first rest-set flip-flop and NM1; Frequency conversion control circuit connects oscillator circuit and current source; Optocoupler inefficacy decision circuitry connects abnormal protection and current source; Current source one termination optocoupler inefficacy decision circuitry, other end ground connection.
Fig. 4 is the circuit theory diagrams of DC-DC converter.DC-DC converter is made up of second interior control module and the outer topological structure of sheet.
The outer topological structure of sheet comprises input filter capacitor C8, inductance L 2, rectifier diode ZD2, output capacitance C9, LED lamp and feedback resistance R8.Be implemented as follows:
Input filter capacitor C mono-termination input, one end ground connection.Filtering input signal medium-high frequency interference components.
One termination input of inductance L 2, the anode of another termination rectifier diode ZD2.It can storage power and releases energy, and the ripple that the linear rise and fall of output voltage are caused is very little, constant current output.
The anode of rectifier diode ZD2 connects inductance, and negative electrode meets output capacitance C9.It determines sense of current, prevents electric current backflow.
The negative electrode of output capacitance C9 mono-terminating diode ZD2, other end ground connection.High fdrequency component in its energy filtering output signal.
The anode of LED lamp meets C9, and negative electrode meets R6.It is the terminal that whole system energy flows into.
One termination LED lamp of feedback resistance R8 resistance, other end ground connection.It changes into Voltage Feedback to second interior control module by the electric current that flows through it, regulates in time the size that flows through LED lamp current.
Second interior control module as shown in Figure 5.Comprise overvoltage crowbar, overheated breaking circuit, MOS drive circuit, overcurrent protection comparator, the second rest-set flip-flop, undervoltage lockout circuit, soft start, the second comparator, oscillator, 2.5V pressurizer, 0.22V reference voltage, error amplifier, phase compensating circuit, metal-oxide-semiconductor NM3 and resistance R 7.Be implemented as follows:
The drain electrode of overvoltage crowbar one termination NM3, termination second rest-set flip-flop; Overheated breaking circuit connects the second rest-set flip-flop; MOS drive circuit one termination the second rest-set flip-flop, the grid of another termination NM3; The positive input termination R7 of overcurrent protection comparator, negative input end ground connection, output termination the second rest-set flip-flop; The second rest-set flip-flop is connected with oscillator, overcurrent protection comparator, MOS drive circuit, overheated breaking circuit, overvoltage crowbar and the second comparator respectively; Undervoltage lockout circuit is connected with soft start with 2.5V pressurizer, 0.22V reference voltage respectively; Soft start is connected with error amplifier with undervoltage lockout circuit respectively; The positive input termination oscillator of the second comparator, negative input termination error amplifier, output termination the second rest-set flip-flop; Oscillator is connected with the second rest-set flip-flop with comparator respectively; 2.5V pressurizer one termination undervoltage lockout circuit, another termination 0.22V reference voltage; 0.22V reference voltage one termination 2.5V pressurizer, another termination error amplifier; The positive input termination 0.22V reference voltage of error amplifier, negative input termination 5 interfaces, output termination phase compensating circuit; Phase compensating circuit is connected with the second comparator with error amplifier; Drain electrode, grid and the source electrode of NM3 is connected with R7 with overvoltage crowbar, MOS drive circuit respectively; Stream protection comparator, other end ground connection are taken in one end of R7.It can convert the low dc voltage of AC-DC converter and the output of lithium battery group charge management module to be applicable to the work of LED lamp constant-current source.
Fig. 6 is lithium battery group charge management module.Comprise that input filter circuit, charging indication, switching circuit, rectification circuit, current control circuit, current detection circuit, temperature-control circuit, charging finish circuit and the 3rd interior control module.Be implemented as follows:
Input filter circuit is made up of capacitor C 10 and C11.Noise in its energy filtering input signal.
Charging indication comprises resistance R 8, R9, light-emitting diode LD2 and LD3.Wherein R8 and LD2 series connection, and be connected with the DONE end of the 3rd interior control module, the luminous expression battery charging of LD2 finishes.R9 and LD3 series connection, and be connected with the CHRG end of the 3rd interior control module, the luminous expression battery of LD3 charges.
Switching circuit is made up of N-type metal-oxide-semiconductor NM4.Conducting in the time that battery charges, charging finishes rear shutoff, and turn-on and turn-off are subject to DRV port limit in the 3rd interior control module.
Rectification circuit comprises ZD3, ZD4 and L3.It prevents electric current backflow, and suitably storage power of energy, prevents that electric current from rising suddenly and declining, and protects battery.
Current control circuit is made up of resistance R 13.Its two ends are connected with BAT end with the CSP of the 3rd interior control module respectively.The size of its resistance is determining the size of charging current.
Current detection circuit comprises C13, C14, C15 and resistance R 12.It is the size of monitor current in real time.
Temperature-control circuit is made up of R10.The TEMP end of the 3rd interior control module of one termination, other end ground connection.It arranges the size of safe temperature, and protection battery temperature is too high and sustain damage.
Charging finishes circuit and comprises a resistance R 11.The EOC end of the 3rd interior control module of one termination, other end ground connection.Its resistance size corresponding charging finish the size of electric current, when charging current is less than while finishing electric current big or small, complete charge.
Fig. 7 is metal-oxide-semiconductor control and management module.It comprises control switch PM1 and diode D7.Be implemented as follows:
Source electrode, grid and the drain electrode of PM1 connects respectively output, the output of AC-DC variator and the anode of diode D7 of lithium battery group charging protecting module.In the time having civil power, AC-DC converter output high level, PM1 turn-offs, by mains-supplied to LED lamp.In the time that nothing has civil power, AC-DC converter output low level, PM1 conducting, is powered to LED lamp by lithium battery group.
The anode of diode D7 connects the drain electrode of PM1, and negative electrode connects the input of DC-DC converter.It can prevent electric current backflow.
Above-mentioned electric power management circuit, abnormity of power supply decision circuitry, thermal protection circuit, overvoltage crowbar, abnormal protection, the first NAND gate, the first rest-set flip-flop, started with high voltage and constant current circuit, slope drive current circuit, the first comparator, peak current protective circuit, tremble frequency control circuit, oscillator circuit, frequency conversion control circuit, optocoupler inefficacy decision circuitry, overheated breaking circuit, MOS drive circuit, overcurrent protection comparator, the second rest-set flip-flop, undervoltage lockout circuit, soft start, the second comparator, oscillator, 2.5V pressurizer, error amplifier, phase compensating circuit is all routine techniques.
Wherein electric power management circuit manages input voltage; Abnormity of power supply decision circuitry judges whether input power exists extremely; Thermal protection circuit, overvoltage crowbar and abnormity protection circuit provide protection with regard to excess Temperature, overtension and other abnormal conditions of circuit respectively; The first NAND gate and the first rest-set flip-flop are processed the signal of abnormal protection and the output of the first comparator; Started with high voltage and constant current circuit and slope drive current start and control polarity pipe NT2; The first comparator is compared the drain terminal voltage of metal-oxide-semiconductor NM1 with reference voltage, control drain terminal in suitable scope and so on; Peak current protective circuit can be eliminated the peak value of the drain terminal electric current of NM1; Tremble frequency control circuit, oscillator circuit and frequency conversion control circuit and provide clock frequency for whole circuit; Optocoupler inefficacy decision circuitry guarantees the stability of whole circuit; Overheated breaking circuit prevents that circuit temperature is too high; MOS drive circuit driving switch pipe NM3; Overcurrent protection comparator prevents that circuital current is excessive; The second rest-set flip-flop is processed the signal that various protective circuits are sent; Undervoltage lockout circuit and soft start low-voltage starting circuit, prevent the impact that large electric current causes whole circuit; The output signal of the second comparator relative error amplifier and overcurrent protection comparator; Oscillator provides clock for circuit; 2.5V pressurizer provides reference voltage for circuit; Error amplifier, by 5 port input signals and reference voltage comparison, guarantees that the voltage stabilization of 5 ports is at 0.22V; The phase place of phase compensating circuit compensating signal, increases phase margin, makes circuit stable.
These circuit all can be by reaching above-mentioned function after conventional electricity Theoretical Design, then this repeats no more concrete circuit structure.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a LED energy storage drive system with reusable AC-DC converter, is characterized in that, comprising:
One AC-DC converter: convert direct current signal to for AC signal;
One lithium battery group charging protecting module: for store electrical energy and protection lithium battery group;
One metal-oxide-semiconductor control module: for switching powering mode;
One DC-DC converter: supply with LED illuminating lamp for converting the direct voltage of AC-DC converter and the output of lithium battery group charging protecting module to constant-current source;
Wherein, AC-DC converter is connected with lithium battery group charging protecting module, metal-oxide-semiconductor control module and DC-DC converter; Lithium battery group charging protecting module is connected with metal-oxide-semiconductor control module with AC-DC converter; Metal-oxide-semiconductor control module is connected with lithium battery group charging protecting module, AC-DC converter and DC-DC converter; DC-DC converter is connected with LED illuminating lamp with metal-oxide-semiconductor control module.
2. the LED energy storage drive system with reusable AC-DC converter according to claim 1, is characterized in that, described AC-DC converter comprises the interior control module of first and the main topography module being connected with control module in first; In first, control module comprises electric power management circuit, abnormity of power supply decision circuitry, thermal protection circuit, overvoltage crowbar, abnormity protection circuit, the first NAND gate, the first rest-set flip-flop, started with high voltage and constant current circuit, slope drive current circuit, triode NT2, metal-oxide-semiconductor NM1, metal-oxide-semiconductor NM2, the first comparator, resistance R 4, resistance R 5, peak current protective circuit, trembles frequency control circuit, oscillator circuit, frequency conversion control circuit, optocoupler inefficacy decision circuitry, current source; In described first, control module comprises eight interfaces;
Wherein, electric power management circuit is connected with abnormity of power supply decision circuitry; Abnormity of power supply decision circuitry, thermal protection circuit and overvoltage crowbar are connected with abnormity protection circuit; Abnormity protection circuit is also connected with optocoupler inefficacy decision circuitry, peak current protective circuit and the first NAND gate; The input of the first NAND gate connects respectively abnormity protection circuit and the first comparator, output termination the first rest-set flip-flop; S termination first NAND gate of the first rest-set flip-flop, R termination oscillator circuit, output Q meets slope drive current circuit and metal-oxide-semiconductor NM2; Started with high voltage and constant current circuit connects respectively the collector electrode of slope drive current circuit and triode NT2; Slope drive current circuit connects respectively the base stage of grid and the triode NT2 of the first rest-set flip-flop, metal-oxide-semiconductor NM2; The collector electrode of triode NT2 connects started with high voltage and constant current circuit, and base stage connects slope drive current circuit, and emitter connects the drain electrode of metal-oxide-semiconductor NM2; The drain electrode of NM1 connects peak value protective circuit, and grid connects oscillator circuit, source ground; The drain electrode of metal-oxide-semiconductor NM2 connects the source electrode of triode NT2, and grid connects the first rest-set flip-flop, source electrode connecting resistance R5; The positive termination 0.2V voltage of the first comparator, negative pole connecting resistance R4, output termination the first NAND gate; Resistance R 4 two ends connect respectively the first comparator and resistance R 5; The two ends of resistance R 5 are connecting resistance R4 and ground respectively; Peak current protective circuit one termination abnormity protection circuit, another termination R4; Tremble frequency control circuit and connect oscillator circuit; Oscillator circuit connects the grid of trembling frequency control circuit, frequency conversion control circuit, the first rest-set flip-flop and NM1; Frequency conversion control circuit connects oscillator circuit and current source; Optocoupler inefficacy decision circuitry connects abnormity protection circuit and current source; Current source one termination optocoupler inefficacy decision circuitry, other end ground connection; Interface one and interface two ground connection of control module in described first; Interface three connects variable frequency control and optocoupler inefficacy circuit; Interface four connects electric power management circuit; Interface five to eight connects the collector electrode of started with high voltage and constant current circuit and NT2;
Described main topography module comprises full bridge rectifier, input filter circuit, current rectifying and wave filtering circuit, transformer T1, output rectification circuit and feedback loop; One end of full bridge rectifier is connected with AC-input voltage, and one end connects input filter circuit; Input filter circuit one termination full bridge rectifier, the other end is connected with current rectifying and wave filtering circuit; Current rectifying and wave filtering circuit one end is connected with input filter circuit, and the other end is connected with transformer T1; Transformer T1 is connected with output rectification circuit with current rectifying and wave filtering circuit respectively; Output rectification circuit is connected with feedback loop with transformer T1; Feedback loop and output rectification circuit are connected with control module in first.
3. the LED energy storage drive system with reusable AC-DC converter according to claim 2, is characterized in that, comprises the outer topological structure of sheet and second interior control module described in described DC-DC converter; The outer topological structure circuit of sheet comprises input filter capacitor C8, inductance L 2, rectifier diode ZD2, output capacitance C9, LED lamp and feedback resistance R8; Wherein input filter capacitor C mono-termination input, one end ground connection; One termination input of inductance L 2, the anode of another termination rectifier diode ZD2; The anode of rectifier diode ZD2 connects inductance, and negative electrode meets output capacitance C9; The negative electrode of output capacitance C9 mono-terminating diode ZD2, other end ground connection; The anode of LED lamp meets output capacitance C9, negative electrode connecting resistance R6; One termination LED lamp of feedback resistance, other end ground connection;
Second interior control module comprises overvoltage crowbar, overheated breaking circuit, MOS drive circuit, overcurrent protection comparator, the second rest-set flip-flop, undervoltage lockout circuit, soft start, the second comparator, oscillator, 2.5V pressurizer, 0.22V reference voltage, error amplifier, phase compensating circuit, metal-oxide-semiconductor NM3, resistance R 7; Described second interior control module comprises five interfaces;
Wherein, the drain electrode of overvoltage crowbar one termination NM3, termination second rest-set flip-flop; Overheated breaking circuit connects the second rest-set flip-flop; MOS drive circuit one termination the second rest-set flip-flop, the grid of another termination NM3; The positive input terminal connecting resistance R7 of overcurrent protection comparator, negative input end ground connection, output termination the second rest-set flip-flop; The second rest-set flip-flop is connected with oscillator, overcurrent protection comparator, MOS drive circuit, overheated breaking circuit, overvoltage crowbar and the second comparator respectively; Undervoltage lockout circuit is connected with soft start with 2.5V pressurizer, 0.22V reference voltage respectively; Soft start is connected with error amplifier with undervoltage lockout circuit respectively; The positive input termination oscillator of the second comparator, negative input termination error amplifier, output termination the second rest-set flip-flop; Oscillator is connected with the second rest-set flip-flop with comparator respectively; 2.5V pressurizer one termination undervoltage lockout circuit, another termination 0.22V reference voltage; 0.22V reference voltage one termination 2.5V pressurizer, another termination error amplifier; The positive input termination 0.22V reference voltage of error amplifier, the interface five of second interior control module of negative input termination, output termination phase compensating circuit; Phase compensating circuit is connected with the second comparator with error amplifier; Drain electrode, grid and the source electrode of NM3 is connected with R7 with overvoltage crowbar, MOS drive circuit respectively; Stream protection comparator, other end ground connection are taken in one end of R7; Interface one ground connection of described second interior control module; Interface two connects undervoltage lockout circuit; Interface three is taken over voltage protection circuit and NM3 drain terminal; Interface four connects 2.5V pressurizer and under-voltage locking; Interface five connects the negative input end of error amplifier.
4. the LED energy storage drive system with reusable AC-DC converter according to claim 3, it is characterized in that, described lithium battery group charging protecting module comprises that input filter circuit, charging indication, switching circuit, rectification circuit, current control circuit, current detection circuit, temperature-control circuit, charging finish circuit and the 3rd interior control module; Wherein input filter circuit is connected with switching circuit with the VG end of the 3rd interior control module; Charging indication one end is connected with input filter circuit, and the other end is connected with the 3rd interior control module; Switching circuit is connected with rectification circuit with the 3rd interior control module, input filter circuit respectively; Rectification circuit is connected with current control circuit with switching circuit respectively; Current control circuit one termination rectification circuit, control module in other end contact pin; Current detection circuit one end ground connection, the 3rd interior control module of another termination; Temperature-control circuit and charging finish the 3rd interior control module of circuit one termination, one end ground connection.
5. the LED energy storage drive system with reusable AC-DC converter according to claim 4, is characterized in that, described metal-oxide-semiconductor control module comprises control switch PM1 and diode D7; Wherein the source electrode of PM1, grid and drain electrode connect respectively output, the output of AC-DC variator and the anode of diode D7 of lithium battery group charging protecting module; The anode of diode D7 connects the drain electrode of PM1, and negative electrode connects the input of DC-DC converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879096.4U CN203632943U (en) | 2013-12-30 | 2013-12-30 | LED energy storage driving system with reusable AC-DC converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879096.4U CN203632943U (en) | 2013-12-30 | 2013-12-30 | LED energy storage driving system with reusable AC-DC converter |
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| CN203632943U true CN203632943U (en) | 2014-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066842A (en) * | 2018-07-27 | 2018-12-21 | 上海与德通讯技术有限公司 | Terminal device, charge control method and computer readable storage medium |
| TWI711249B (en) * | 2019-02-02 | 2020-11-21 | 大陸商昂寶電子（上海）有限公司 | Output overvoltage sensing system and sensing method |
| CN112271924A (en) * | 2020-11-11 | 2021-01-26 | 湖北华中光电科技有限公司 | Constant-current output circuit and method based on voltage feedback of buck converter |
-
2013
- 2013-12-30 CN CN201320879096.4U patent/CN203632943U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066842A (en) * | 2018-07-27 | 2018-12-21 | 上海与德通讯技术有限公司 | Terminal device, charge control method and computer readable storage medium |
| TWI711249B (en) * | 2019-02-02 | 2020-11-21 | 大陸商昂寶電子（上海）有限公司 | Output overvoltage sensing system and sensing method |
| CN112271924A (en) * | 2020-11-11 | 2021-01-26 | 湖北华中光电科技有限公司 | Constant-current output circuit and method based on voltage feedback of buck converter |
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