A battery self-charging and self-discharging LED lamp driving circuit and driving method thereof

Abstract

The present invention discloses a battery self-charging and self-discharging LED driving circuit, the circuit includes a power module, a battery module and an LED module; the power module is connected to the battery module and the LED module respectively, and the battery module is also connected to the LED module. The present invention also discloses a battery self-charging and self-discharging LED driving method, the method specifically comprises: an external power supply charges the battery, and supplies power to the LED module to light up the LED lamp, after the battery is fully charged, the circuit switches to the battery to supply power to the LED module, after the battery is fully discharged, the circuit automatically connects to the external power supply. Compared with the prior art, the circuit structure provided in the present invention is simple and stable, and the driving method of the circuit can realize the self-charging and self-discharging of the battery while realizing the continuous light emission of the LED module.

Description

Technical Field

[0001] The invention belongs to the technical field of power drive, and in particular relates to a drive circuit and a drive method thereof applied to an underwater fish attracting lamp. Background Art

[0002] Fish attracting lights, also known as fishing lights, are usually used in the field of marine fisheries to lure specific fish. Fish attracting lights are divided into two categories according to their working type: above-water fish attracting lights and underwater fish attracting lights.

[0003] The fish-attracting lamp used in underwater working environments should have the characteristics of high luminous efficiency, high light transmittance, and a wide fish-attracting range. The power circuit that supplies power to the lamp body should be able to adapt to high underwater pressure, low temperature, inconvenient operation, etc., and have the characteristics of high efficiency, durability, stable and reliable circuit structure, etc.

[0004] Earlier fishing lights often used halogen lamps as their light source. Halogen lamps, also known as tungsten halogen bulbs and quartz bulbs, are a variant of incandescent lamps. Halogen lamps are heat light sources, and the power supply voltage is usually divided into two types: AC 220V and DC 12V and 24V. Due to the high power and short life of halogen lamps, and the relatively limited energy supply during offshore operations, halogen lamps have been used less and less in the underwater fishing light industry in recent years.

[0005] In recent years, with the continuous development of LED lighting technology, LED, as a cold light source, has gradually replaced traditional halogen lamps and become the main light source for underwater fishing lights due to its outstanding advantages such as low energy consumption, long life and stable structure.

[0006] Considering the special working environment of the fish attracting lamp, the lamp body design and the power circuit design of the fish attracting lamp are very important. For example, the patent application document with application number "201410610857.5" discloses an intelligent LED underwater fishing lamp, including an LED lamp capable of emitting at least two-color light, a sensor capable of judging the water depth and outputting a sensing signal, and a driver that outputs a brightness adjustment signal or a color adjustment signal to the LED lamp according to the sensing signal to drive and control the LED lamp. The driver includes an input filter connected to the AC power supply and filtering the input AC signal, a rectifier circuit connected to the input filter and rectifying its output signal, a PFC boost converter that boosts the rectified signal, and a switching circuit that inverts the boosted signal and supplies it to the LED lamp. The switching circuit is connected to the LED lamp through a switching transformer and an output rectifier filter.

[0007] The technical solution provided by the above patent is provided with an input filter, a rectifier circuit, a PFC boost converter, and an auxiliary power supply circuit. Its circuit structure is very complex. When used in specific underwater fishing operations, the fishing light and its circuit must be powered in real time. Once the power supply stops, the LED light will go out immediately. Such a circuit setting will bring great inconvenience to fishing operations. Summary of the invention

[0008] In order to solve the above problems, the purpose of the present invention is to provide a battery self-charging and self-discharging LED lamp driving circuit. A battery is arranged in the circuit, and an external power supply charges the battery automatically according to the circuit setting. On the one hand, the LED lamp can use the external power supply to power the light, and on the other hand, it can rely on the battery's electric energy storage to power the light. The circuit setting is simple and the degree of automation is high. The circuit structure is stable and is suitable for underwater fishing lamp operations.

[0009] Another object of the present invention is to provide a method for driving a battery self-charging and self-discharging LED lamp, which utilizes the current level in the circuit to determine the charging and discharging status of the battery, automatically switches after the battery is fully charged, and uses the battery as a power supply energy source for the LED lamp, or automatically charges the battery after the battery is exhausted. The driving method is stable and reliable, reasonably utilizes energy, greatly improves the continuous working time of the circuit, and maintains a good working state.

[0010] To achieve the above object, the technical solution of the present invention is as follows:

[0011] The invention provides a battery self-charging and self-discharging LED driving circuit, which comprises a power module, a battery module and an LED module; the power module is respectively connected to the battery module and the LED module, and the battery module is also connected to the LED module.

[0012] The LED module is the main light-emitting element. The external power supply charges the battery module on the one hand, and supplies power to the LED module on the other hand to keep the LED module emitting light. After enough electricity is stored in the battery module, the battery module supplies power to the LED module through the connection with the LED module. While the battery module supplies power to the LED module, the external power supply is cut off. After the battery module is discharged, the above process is repeated to achieve self-charging and self-discharging of the battery while keeping the LED module continuously emitting light, thereby extending the overall working time of the lamp.

[0013] The power supply module includes a first power supply unit and a second power supply unit;

[0014] The first power supply unit includes a first relay, a rectifier chip, a first resistor, a second resistor, a third resistor and a fourth resistor; the live wire of the AC power supply is connected to one of the contacts of the first relay, the other contact of the first relay is connected to the first input end of the rectifier chip, and the second input end of the rectifier chip is connected to the neutral wire of the external AC power supply; the first output end of the rectifier chip is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, the other end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is connected to one end of the fourth resistor, and the other end of the fourth resistor is connected to the second output end of the rectifier chip;

[0015] The specific model of the rectifier chip is: GBU410;

[0016] A lead-out terminal is provided at the fourth resistor for connecting to the second power supply unit;

[0017] The second power supply unit includes a multi-way switch, a fifth resistor, a sixth resistor, a seventh resistor, a first MOS tube, a first controllable voltage regulator, a first variable resistor, a second relay, a first three-terminal voltage regulator, a second three-terminal voltage regulator and a third three-terminal voltage regulator; the fifth resistor is connected to the external DC power supply through one of the switch channels in the multi-way switch, and the other end of the fifth resistor is provided with a lead-out end for connecting to the LED module; the lead-out end provided at the fourth resistor is connected to the drain of the first MOS tube; one end of the sixth resistor is connected to the battery module, the other end of the sixth resistor is connected to the anode of the first diode, and the cathode of the first diode is connected to the drain of the first MOS tube; the anode of the controllable voltage regulator is grounded, the cathode of the controllable voltage regulator is connected to the gate of the first MOS tube, and one end of the first variable resistor is grounded , the other end of the first variable resistor is connected to the source of the first MOS tube, and the sliding end of the first variable resistor is connected to the reference electrode of the controllable voltage regulator; one end of the seventh resistor is connected to the common end of the first diode and the first MOS tube, and the other end of the seventh resistor is connected to the common end of the controllable voltage regulator and the first MOS tube; the source of the first MOS tube is connected to one of the contacts of the second relay, and the other contact of the second relay is connected to the input end of the first three-terminal voltage regulator, the ground end of the first three-terminal voltage regulator is grounded, the output end of the first three-terminal voltage regulator is connected to the input end of the second three-terminal voltage regulator, the ground end of the second three-terminal voltage regulator is grounded, the output end of the second three-terminal voltage regulator is connected to the input end of the third three-terminal voltage regulator, the ground end of the third three-terminal voltage regulator is grounded, and the output end of the third three-terminal voltage regulator is connected to the battery module;

[0018] Output terminals of the first three-terminal voltage stabilizer, the second three-terminal voltage stabilizer and the third three-terminal voltage stabilizer are all provided with lead-out terminals corresponding to the stabilized voltage.

[0019] The specific model of the first three-terminal voltage regulator is LM7818, the specific model of the second three-terminal voltage regulator is LM7809, and the specific model of the third three-terminal voltage regulator is LM7805.

[0020] The battery module includes a boost unit, a charging management unit, and a battery discharge management unit; the battery is connected to the input end of the boost unit, and the output end of the boost unit is connected to the charging management unit and the discharge management unit respectively; the power module and the external power supply are connected to the battery through the charging management unit, and the discharge management unit connects the charging management unit and the power module.

[0021] The boost unit includes a boost chip and a first inductor. The specific model of the boost chip is LC3311. The IN pin of the boost chip is connected to the positive electrode of the battery. One end of the first inductor is connected to the common end of the boost chip and the battery. The other end of the first inductor is connected to the LX pin of the boost chip. The common end of the boost chip and the first inductor is also provided with a lead-out end.

[0022] The charging management unit includes a third relay, a first triode, a second triode, a third triode, a fourth triode, a first light-emitting diode, a second light-emitting diode, a second controllable voltage regulator, a second variable resistor, a third variable resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a battery protection chip, a second MOS tube and a third MOS tube. The external power supply and the power module are commonly connected to one of the contacts of the third relay, the other contact of the third relay is connected to the emitter of the first triode, the collector of the first triode is connected to the anode of the first light-emitting diode, the cathode of the first light-emitting diode is connected to the positive electrode of the battery, and a lead-out terminal is set at the common end of the first triode and the first light-emitting diode; the other contact of the third relay is also connected to one end of the eighth resistor, and the other end of the eighth resistor is connected to the collector of the second triode. , the emitter of the second triode is connected to the emitter of the third triode, the collector of the third triode is connected to the common end of the first light-emitting diode and the battery; the anode of the second controllable voltage regulator is grounded, the cathode of the second controllable voltage regulator is connected to the base of the second triode, the other end of the tenth resistor is connected to the common end of the eighth resistor and the second triode, one end of the ninth resistor is also connected to the common end of the eighth resistor and the second triode, the other end of the ninth resistor is connected to the base of the first triode, one end of the second variable resistor is grounded, the other end is connected to the common end of the second triode and the third triode, the sliding end of the second variable resistor is connected to the reference electrode of the second controllable voltage regulator; one end of the eleventh resistor is grounded, the other end is connected to one end of the third variable resistor, the other end of the third variable resistor is connected to the base of the third triode, and the other end of the third variable resistor is also connected to the sliding end;

[0023] The specific model of the battery protection chip is DW01;

[0024] The positive electrode of the battery is connected to the VCC pin of the battery protection chip; the GND pin of the battery protection chip is connected to the source of the second MOS tube, the drain of the second MOS tube is connected to the drain of the third MOS tube, and the source of the third MOS tube is grounded; the OD pin of the battery protection chip is connected to the gate of the second MOS tube; the OC pin of the battery protection chip is also connected to the base of the fourth triode, the anode of the second light-emitting diode is connected to the lead-out terminal set at the common end of the boost chip and the first inductor; the cathode of the second light-emitting diode is connected to the collector of the fourth triode, and the base of the third triode is grounded.

[0025] The discharge management unit includes a first inverter, a second inverter, a third inverter, a fourth inverter, a sixth triode, a seventh triode, a first optical coupler, a first capacitor, a second capacitor and a third capacitor; the input end of the first inverter is connected to the lead-out terminal set at the common end of the first triode and the first light-emitting diode; the output end of the first inverter is connected to the base of the fifth triode, the emitter of the fifth triode is grounded, the collector of the fifth triode is connected to the cathode of the light-emitting device in the first optical coupler, the anode of the light-emitting device in the first optical coupler is connected to the lead-out terminal set at the common end of the boost chip and the first inductor, the negative electrode of the photosensor of the first optical coupler is connected to the input end of the third inverter, the output end of the third inverter is connected to the input end of the fourth inverter, the output end of the fourth inverter is connected to the base of the sixth triode, and the emitter of the sixth triode is grounded; the emitter of the sixth triode is also connected to the base of the seventh triode, and the emitter of the seventh triode is grounded;

[0026] One end of the coil in the first relay is connected to the positive electrode of the photosensitive device in the first optical coupler, and the other end of the coil in the first relay is connected to the collector of the sixth transistor. When the coil in the first relay is energized, the two contacts of the second relay are disconnected.

[0027] One end of the first capacitor is connected to the common end of the first optical coupler and the third inverter, and the other end of the first capacitor is grounded; one end of the second capacitor is connected to the common end of the first relay and the second relay, and the other end of the second capacitor is grounded; one end of the third capacitor is connected to the common end of the first relay and the second relay, and the other end of the third capacitor is grounded;

[0028] One end of the coil in the second relay is also connected to the positive electrode of the photosensor in the first optical coupler, and the other end of the coil in the second relay is connected to the collector of the seventh transistor. When the coil in the second relay is energized, the two contacts of the second relay are engaged.

[0029] One end of the coil in the third relay is also connected to the positive electrode of the photosensor in the first optical coupler, and the other end of the coil in the second relay is also connected to the collector of the seventh transistor. When the coil in the third relay is energized, the two contacts of the third relay are connected.

[0030] The input end of the second inverter is connected to the output end of the first inverter, and the output end of the second inverter is provided with a lead-out end.

[0031] The LED module includes a switching switch and an LED lamp, the switching switch includes a fourth MOS tube and a twelfth resistor, the external power supply and the battery module are both connected to the gate of the fourth MOS tube, the source of the fourth MOS tube is grounded, the drain of the fourth MOS tube is connected to the source through the twelfth resistor, and the drain of the fourth MOS tube is also connected to the LED lamp.

[0032] The present invention also discloses a battery self-charging and self-discharging LED driving method, which specifically comprises the following steps: an external power supply charges a battery and supplies power to an LED module to light up an LED lamp; after the battery is fully charged, the circuit switches to the battery to supply power to the LED module; after the battery is fully discharged, the circuit automatically connects to the external power supply to achieve battery self-charging and self-discharging.

[0033] The specific method for charging the battery is as follows: the charging voltage and charging current required for charging the battery are calculated, and the second triode, the second adjustable voltage regulator, the second variable resistor and the tenth resistor cooperate to adjust and work so that the charging voltage of the battery meets the requirement; the third triode, the third variable resistor and the eleventh resistor cooperate to adjust and work so that the charging current of the battery meets the requirement; the ninth resistor, the first triode and the first light-emitting diode cooperate to work during the charging process, and when the battery is fully charged, the level of the lead-out terminal set at the common end of the first triode and the first light-emitting diode changes, indicating that the battery charging is completed.

[0034] The specific method for discharging the battery is as follows: the lead-out terminal arranged at the common end of the first transistor and the first light-emitting diode is connected to the discharge management module, the level of the lead-out terminal changes and is inverted by the first inverter, and then passes through the fifth transistor to turn on the first optical coupler, and further passes the level signal through the third inverter and the fourth inverter to drive the sixth transistor and the seventh transistor to turn on, thereby powering the coil of the first relay, the coil in the second relay and the coil in the third relay, driving the corresponding contacts to engage or disconnect until the battery is discharged.

[0035] When the external power supply charges the battery, one channel in the multi-way switch is connected, the second controllable voltage regulator, the second variable resistor and the tenth resistor cooperate to adjust the charging voltage value corresponding to the battery, and the third variable resistor and the eleventh resistor cooperate to adjust the charging current value corresponding to the battery. After one channel in the multi-way switch is connected, the second transistor and the third transistor are turned on, and the battery starts to charge.

[0036] During the battery charging process, the first transistor, the ninth resistor and the first light-emitting diode cooperate to form a charging indication circuit. When the external power supply charges the battery, the emitter voltage of the first transistor is higher than the base voltage. At this time, the first transistor is in the on state, and the first light-emitting diode emits light, indicating that the battery is in the charging state.

[0037] During the battery charging process, the base current of the third transistor gradually increases, and its base point gradually rises. When the base and emitter potentials of the third transistor are equal, the third transistor is cut off. At this time, the VCC pin in the battery protection chip is the voltage judgment pin. When the battery voltage is detected to be higher than the maximum charging voltage threshold, a logic flip occurs inside the battery protection chip, causing the OC pin to output a low potential, the third MOS tube is cut off, the charging current loop is cut off, and the external power supply stops charging the battery. At this time, the battery is fully charged.

[0038] When the battery is fully charged, as the voltage of the third transistor increases, the third transistor is cut off, and at the same time, the collector voltage of the second transistor rises, the first transistor is cut off, and the common end of the first transistor and the first light-emitting diode is in a low level state. The low level state signal is connected to the discharge management circuit through the lead-out terminal set here.

[0039] After the above-mentioned low-level state is connected to the discharge management circuit through the lead-out end, it is connected to the LED module after being inverted by the first inverter and inverted twice by the second inverter, turning off the fourth MOS tube. However, since the MOS tube switching time is fast and the gate of the fourth MOS tube is connected to the battery at the same time, the LED module will instantly switch to battery power supply.

[0040] On the other hand, the low-level state signal drawn from the charging management unit becomes a high-level state signal after returning home through the first inverter. The high-level state signal drives the first optical coupler to turn on after passing through the fifth transistor, and obtains a conduction signal at the photosensitive device end of the first optical coupler. The conduction signal is then switched through the "high-low-high" of the third inverter and the fourth inverter to enhance the ability to drive the load, drive the sixth transistor and the seventh transistor to turn on, and pull up the collector current of the sixth transistor and the seventh transistor respectively. The coils of the first relay, the second relay and the third relay are energized respectively, so that the two contacts in the first relay change from being engaged to being disconnected, the two contacts in the second relay change from being disconnected to being closed, and the two contacts in the third relay change from being connected to being closed. After the two contacts in the second relay are closed, after being selected by the multi-way switch, the external power supply is disconnected, the battery is connected to the LED module through the fourth MOS tube, and the battery begins to discharge to power the LED module.

[0041] During the battery charging process, the external power supply also charges the first capacitor, the second capacitor and the third capacitor. At the moment when the battery is switched between the charging state and the discharging state, the first capacitor, the second capacitor and the third capacitor release their respective inter-electrode charges to play a role in supplementing the delay. Therefore, the instantaneous power failure in the circuit at the moment when the battery is switched between the charging state and the discharging state can be ignored.

[0042] After the battery enters the discharge state, the VCC pin in the battery protection chip detects that the voltage in the circuit is lower than the maximum voltage threshold. At this time, the OC pin of the battery protection chip flips to a high level, and the third MOS tube is turned on to maintain the discharge state of the battery. At the same time, the OD pin of the battery protection chip is also in a high level state.

[0043] When the battery gradually discharges and the VCC pin of the battery protection chip detects that the discharge voltage is lower than the minimum voltage threshold, the OD pin switches from a high level state to a low level state, the second MOS tube is cut off, and the battery no longer discharges.

[0044] After the battery can no longer discharge, the collector potential of the third transistor gradually decreases, the first transistor is turned on, and the lead-out terminal arranged between the first transistor and the first light-emitting diode leads out a high-level signal. After the high-level signal passes through the first inverter, the third inverter and the fourth inverter, the coil in the first relay is de-energized, the two contacts of the first relay return to the engaged state, and the external power supply is reconnected to the circuit. At the same time, the coils in the second relay and the third relay are de-energized, the two contacts in the second relay return to the broken block state, and the battery stops discharging; the two contacts of the third relay are reconnected, and the external power supply recharges the battery.

[0045] The above is the whole process of this circuit realizing self-charging and self-discharging and realizing continuous lighting of the LED module.

[0046] The advantages of the present invention are as follows: compared with the prior art, the circuit structure provided in the present invention is simple and stable, and the driving method of the circuit can realize the self-charging and self-discharging of the battery while realizing the continuous lighting of the LED module. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is an overall schematic diagram of the circuit implemented in the specific implementation mode of the present invention.

[0048] Figure 2 It is a first partial enlarged principle diagram of the circuit implemented in the specific implementation mode of the present invention.

[0049] Figure 3 It is a second partial enlarged schematic diagram of the circuit implemented in the specific implementation manner of the present invention.

[0050] Figure 4It is a third partial enlarged principle diagram of the circuit implemented in the specific implementation manner of the present invention.

[0051] Figure 5 It is a fourth partial enlargement principle diagram of the circuit implemented in the specific implementation manner of the present invention.

[0052] Figure 6 It is a fifth partial enlarged principle diagram of the circuit implemented in the specific implementation manner of the present invention.

[0053] Figure 7 It is the sixth local enlargement principle diagram of the circuit implemented in the specific implementation manner of the present invention.

[0054] Figure 8 It is the seventh partial enlargement principle diagram of the circuit implemented in the specific implementation manner of the present invention.

[0055] Fig. 9 It is the eighth partial enlargement principle diagram of the circuit implemented in the specific implementation manner of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0057] To achieve the above object, the technical solution of the present invention is as follows:

[0058] See also Figure 1-9 As shown, the present invention provides a battery self-charging and self-discharging LED driving circuit, which includes a power module, a battery module and an LED module; the power module is connected to the battery module and the LED module respectively, and the battery module is also connected to the LED module.

[0059] The LED module is the main light-emitting element. The external power supply charges the battery module on the one hand, and supplies power to the LED module on the other hand to keep the LED module emitting light. After enough electricity is stored in the battery module, the battery module supplies power to the LED module through the connection with the LED module. While the battery module supplies power to the LED module, the external power supply is cut off. After the battery module is discharged, the above process is repeated to achieve self-charging and self-discharging of the battery while keeping the LED module continuously emitting light, thereby extending the overall working time of the lamp.

[0060] The power supply module includes a first power supply unit and a second power supply unit;

[0061] The first power supply unit includes a first relay W1, a rectifier chip DB1, a first resistor R4, a second resistor R5, a third resistor R6 and a fourth resistor R7; the live wire of the AC power supply is connected to one of the contacts of the first relay W1, the other contact of the first relay W1 is connected to the first input end of the rectifier chip DB1, and the second input end of the rectifier chip DB1 is connected to the neutral wire of the external AC power supply; the first output end of the rectifier chip DB1 is connected to one end of the first resistor R4, the other end of the first resistor R4 is connected to one end of the second resistor R5, the other end of the second resistor R5 is connected to one end of the third resistor R6, the other end of the third resistor R6 is connected to one end of the fourth resistor R7, and the other end of the fourth resistor R7 is connected to the second output end of the rectifier chip DB1;

[0062] The specific model of the rectifier chip DB1 is: GBU410;

[0063] A +47V lead-out terminal is provided at the fourth resistor R7 for connecting to the second power supply unit;

[0064] The second power supply unit includes a multi-way switch SW1, a fifth resistor RW1, a sixth resistor R126, a seventh resistor R123, a first MOS tube Q1, a first controllable voltage regulator Q2, a first variable resistor R12, a second relay W2, a first three-terminal voltage regulator U3, a second three-terminal voltage regulator U2 and a third three-terminal voltage regulator U1; the fifth resistor RW1 is connected to an external DC power supply +24V through one of the switch channels in the multi-way switch, and the other end of the fifth resistor is provided with an 18-27V lead-out terminal for connecting to the LED module; the +47V lead-out terminal provided at the fourth resistor R7 is connected to the drain of the first MOS tube Q1; one end of the sixth resistor R126 is connected to the battery module, and the other end of the sixth resistor R126 is connected to the anode of the first diode D4, and the cathode of the first diode D4 is connected to the drain of the first MOS tube Q1; the anode of the controllable voltage regulator Q2 is grounded, and the cathode of the controllable voltage regulator Q2 is connected to the gate of the first MOS tube Q1, and the One end of a variable resistor R12 is grounded, the other end of the first variable resistor R12 is connected to the source of the first MOS tube Q1, and the sliding end of the first variable resistor R12 is connected to the reference electrode of the controllable voltage regulator Q2; one end of the seventh resistor R123 is connected to the common end of the first diode D4 and the first MOS tube Q1, and the other end of the seventh resistor R123 is connected to the common end of the controllable voltage regulator D2 and the first MOS tube Q1; the source of the first MOS tube Q1 is connected to one of the contacts of the second relay W2, the other contact of the second relay W2 is connected to the input end of the first three-terminal voltage regulator U3, the grounding end of the first three-terminal voltage regulator U3 is grounded, the output end of the first three-terminal voltage regulator U3 is connected to the input end of the second three-terminal voltage regulator U2, the grounding end of the second three-terminal voltage regulator U2 is grounded, the output end of the second three-terminal voltage regulator U2 is connected to the input end of the third three-terminal voltage regulator U1, the grounding end of the third three-terminal voltage regulator U1 is grounded, and the output end of the third three-terminal voltage regulator U1 is connected to the battery module;

[0065] The specific model of the first three-terminal voltage regulator U3 is LM7818, and its output terminals are all set to lead terminals corresponding to the +18V regulated voltage. The specific model of the second three-terminal voltage regulator U2 is LM7809, and its output terminals are all set to lead terminals corresponding to the +9V regulated voltage. The specific model of the third three-terminal voltage regulator U1 is LM7805. Its output terminals are all set to lead terminals corresponding to the +5V regulated voltage.

[0066] The battery module includes a boost unit, a charging management unit, and a battery discharge management unit; the battery is connected to the input end of the boost unit, and the output end of the boost unit is connected to the charging management unit and the discharge management unit respectively; the power module and the external power supply are connected to the battery through the charging management unit, and the discharge management unit connects the charging management unit and the power module.

[0067] The boost unit includes a boost chip U4 and a first inductor L1. The specific model of the boost chip is LC3311. The IN pin of the boost chip U4 is connected to the positive electrode of the battery. One end of the first inductor L1 is connected to the common end of the boost chip U4 and the battery. The other end of the first inductor L1 is connected to the LX pin of the boost chip U4. The common end of the boost chip U4 and the first inductor L1 is also provided with a lead-out end.

[0068] The charging management unit includes a third relay W3, a first transistor Q3, a second transistor Q5, a third transistor Q6, a fourth transistor Q11, a first light-emitting diode D5, a second light-emitting diode D6, a second controllable voltage regulator Q4, a second variable resistor R24, a third variable resistor R25, an eighth resistor RX, a ninth resistor R20, a tenth resistor R23, an eleventh resistor R26, a battery protection chip U31, a second MOS transistor Q9 and a third MOS transistor Q10. The external power supply and the power module are commonly connected to one of the contacts of the third relay W3. The other contact of the third relay W3 is connected to the emitter of the first transistor Q3, the collector of the first transistor Q3 is connected to the anode of the first light-emitting diode D5, the cathode of the first light-emitting diode D5 is connected to the positive electrode of the battery, and a SIGN lead-out terminal is set at the common end of the first transistor Q3 and the first light-emitting diode D5; the other contact of the third relay W3 is also connected to one end of the eighth resistor RX, and the other end of the eighth resistor RX is connected to the second transistor Q5 The collector of the second triode Q5 is connected, the emitter of the second triode Q5 is connected to the emitter of the third triode Q6, the collector of the third triode Q6 is connected to the common end of the first light emitting diode D5 and the battery; the anode of the second controllable voltage regulator Q4 is grounded, the cathode of the second controllable voltage regulator Q4 is connected to the base of the second triode Q5, the other end of the tenth resistor R23 is connected to the common end of the eighth resistor RX and the second triode Q5, and one end of the ninth resistor R20 is also connected to the common end of the eighth resistor RX and the second triode Q5. The other end of the ninth resistor R20 is connected to the base of the first triode Q3, one end of the second variable resistor R24 ​​is grounded, the other end thereof is connected to the common end of the second triode Q5 and the third triode Q6, and the sliding end of the second variable resistor R24 ​​is connected to the reference electrode of the second controllable voltage regulator Q4; one end of the eleventh resistor R26 is grounded, the other end thereof is connected to one end of the third variable resistor R25, the other end of the third variable resistor R25 is connected to the base of the third triode Q6, and the other end of the third variable resistor R25 is also connected to the sliding end;

[0069] The specific model of the battery protection chip U31 is DW01;

[0070] The positive electrode of the battery is connected to the VCC pin of the battery protection chip U31; the GND pin of the battery protection chip U31 is connected to the source of the second MOS tube Q9, the drain of the second MOS tube Q9 is connected to the drain of the third MOS tube Q10, and the source of the third MOS tube Q10 is grounded; the OD pin of the battery protection chip U31 is connected to the gate of the second MOS tube Q9; the OC pin of the battery protection chip U31 is also connected to the base of the fourth transistor Q11, the anode of the second light-emitting diode D6 is connected to the SY5V lead-out terminal set at the common end of the boost chip U4 and the first inductor L1; the cathode of the second light-emitting diode D6 is connected to the collector of the fourth transistor Q11, and the base of the third transistor Q11 is grounded.

[0071] The discharge management unit includes a first inverter 1A, a second inverter 1Y, a third inverter 3A, a fourth inverter 3Y, a sixth transistor Q13, a seventh transistor Q14, a first optical coupler U10, a first capacitor C21, a second capacitor C22 and a third capacitor C23; the input end of the first inverter 1A is connected to the lead-out end set at the common end of the first transistor Q3 and the first light-emitting diode D5; the output end of the first inverter 1A is connected to the base of the fifth transistor Q12, the emitter of the fifth transistor Q12 is grounded, and the collector of the fifth transistor Q12 is connected to the first optical coupler U10. The cathode of the light-emitting device in the coupler U10, the anode of the light-emitting device in the first optical coupler U10 is connected to the lead-out terminal set at the common end of the boost chip and the first inductor, the negative electrode of the photosensor of the first optical coupler U10 is connected to the input end of the third inverter 3A, the output end of the third inverter 3A is connected to the input end of the fourth inverter 3Y, the output end of the fourth inverter 3Y is connected to the base of the sixth transistor Q13, and the emitter of the sixth transistor Q13 is grounded; the emitter of the sixth transistor Q13 is also connected to the base of the seventh transistor Q14, and the emitter of the seventh transistor Q17 is grounded;

[0072] One end of the coil in the first relay W1 is connected to the positive electrode of the photosensitive device in the first optical coupler U10, and the other end of the coil in the first relay W1 is connected to the collector of the sixth transistor Q13. When the coil in the first relay W1 is energized, the two contacts of the second relay W2 are disconnected;

[0073] One end of the first capacitor C21 is connected to the common end of the first optical coupler U10 and the third inverter 3A, and the other end of the first capacitor C21 is grounded; one end of the second capacitor C22 is connected to the common end of the first relay W1 and the second relay W2, and the other end of the second capacitor C23 is grounded; one end of the third capacitor C24 is connected to the common end of the first relay W1 and the second relay W2, and the other end of the third capacitor C24 is grounded;

[0074] One end of the coil in the second relay W2 is also connected to the positive electrode of the photosensitive device in the first optical coupler U10, and the other end of the coil in the second relay W2 is connected to the collector of the seventh transistor Q14. When the coil in the second relay W2 is energized, the two contacts of the second relay W2 are engaged;

[0075] One end of the coil in the third relay W3 is also connected to the positive electrode of the photosensor in the first optical coupler U10, and the other end of the coil in the second relay W2 is also connected to the collector of the seventh transistor Q14. When the coil in the third relay W3 is energized, the two contacts of the third relay W3 are connected;

[0076] An input terminal of the second inverter 1Y is connected to an output terminal of the first inverter 1A, and an output terminal of the second inverter 1Y is provided as a lead-out terminal.

[0077] The LED module includes a first LED lamp group, a second LED lamp group and a third LED lamp group. The first LED lamp group includes a switch and a first LED lamp. The switch includes a fourth MOS tube Q15 and a twelfth resistor RP. The external power supply and the battery module are both connected to the gate of the fourth MOS tube Q15. The source of the fourth MOS tube Q15 is grounded. The drain of the fourth MOS tube Q15 is connected to the source through the twelfth resistor RP. The first LED lamp includes a plurality of light emitting diodes. The plurality of light emitting diodes are connected to form a first LED lamp. The first LED lamp is connected to the drain of the fourth MOS tube Q15.

[0078] The second LED lamp group includes a driving chip U2, a fifth MOS tube Q16 and a second LED lamp. The driving chip U2 is connected to a power module. The specific model of the driving chip U2 is ORG5811. The OUT pin of the driving chip U2 is connected to the gate of the fifth MOS tube Q16. The VREF pin of the driving chip U2 is connected to the source of the fifth MOS tube Q16. The second LED lamp includes a plurality of light-emitting diodes. The plurality of light-emitting diodes are connected in series to form a second LED lamp. The anode of the second LED lamp is connected to the power module, and the cathode of the second LED lamp is connected to the drain of the fifth MOS tube Q16.

[0079] The third LED lamp group includes a third LED lamp. The third LED lamp includes a plurality of light emitting diodes connected to form a third LED lamp. The third LED lamp is connected to a power module.

[0080] The present invention also discloses a battery self-charging and self-discharging LED driving method, which specifically comprises the following steps: an external power supply charges a battery and supplies power to an LED module to light up an LED lamp; after the battery is fully charged, the circuit switches to the battery to supply power to the LED module; after the battery is fully discharged, the circuit automatically connects to the external power supply to achieve battery self-charging and self-discharging.

[0081] The specific method for charging the battery is as follows: the charging voltage and charging current required for charging the battery are calculated, and the second triode, the second adjustable voltage regulator, the second variable resistor and the tenth resistor cooperate to adjust and work so that the charging voltage of the battery meets the requirement; the third triode, the third variable resistor and the eleventh resistor cooperate to adjust and work so that the charging current of the battery meets the requirement; the ninth resistor, the first triode and the first light-emitting diode cooperate to work during the charging process, and when the battery is fully charged, the level of the lead-out terminal set at the common end of the first triode and the first light-emitting diode changes, indicating that the battery charging is completed.

[0082] The specific method for discharging the battery is as follows: the lead-out terminal arranged at the common end of the first transistor and the first light-emitting diode is connected to the discharge management module, the level of the lead-out terminal changes and is inverted by the first inverter, and then passes through the fifth transistor to turn on the first optical coupler, and further passes the level signal through the third inverter and the fourth inverter to drive the sixth transistor and the seventh transistor to turn on, thereby powering the coil of the first relay, the coil in the second relay and the coil in the third relay, driving the corresponding contacts to engage or disconnect until the battery is discharged.

[0083] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery self-charging and self-discharging LED driving circuit, the circuit comprising a power module, a battery module and an LED module; characterized in that: The power module is connected to the battery module and the LED module respectively, and the battery module is also connected to the LED module; The power supply module includes a first power supply unit and a second power supply unit; The first power supply unit includes a first relay, a rectifier chip, a first resistor, a second resistor, a third resistor and a fourth resistor; the live wire of the AC power supply is connected to one of the contacts of the first relay, the other contact of the first relay is connected to the first input end of the rectifier chip, and the second input end of the rectifier chip is connected to the neutral wire of the external AC power supply; the first output end of the rectifier chip is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, the other end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is connected to one end of the fourth resistor, and the other end of the fourth resistor is connected to the second output end of the rectifier chip; The specific model of the rectifier chip is: GBU410; The fourth resistor is provided with a lead-out terminal for connecting to the second power supply unit; The second power supply unit includes a multi-way switch, a fifth resistor, a sixth resistor, a seventh resistor, a first MOS tube, a first controllable voltage regulator, a first variable resistor, a second relay, a first three-terminal voltage regulator, a second three-terminal voltage regulator and a third three-terminal voltage regulator; the fifth resistor is connected to the external DC power supply through one of the switch channels in the multi-way switch, and the other end of the fifth resistor is provided with a lead end for connecting to the LED module; the lead end provided at the fourth resistor is connected to the drain of the first MOS tube; One end of the sixth resistor is connected to the battery module, the other end of the sixth resistor is connected to the anode of the first diode, and the cathode of the first diode is connected to the drain of the first MOS tube; the anode of the controllable voltage regulator is grounded, the cathode of the controllable voltage regulator is connected to the gate of the first MOS tube, one end of the first variable resistor is grounded, the other end of the first variable resistor is connected to the source of the first MOS tube, and the sliding end of the first variable resistor is connected to the reference electrode of the controllable voltage regulator; one end of the seventh resistor is connected to the common end of the first diode and the first MOS tube, and the other end of the seventh resistor is connected to the common end of the controllable voltage regulator and the first MOS tube; the source of the first MOS tube is connected to one of the contacts of the second relay, and the other contact of the second relay is connected to the input end of the first three-terminal voltage regulator, the ground end of the first three-terminal voltage regulator is grounded, the output end of the first three-terminal voltage regulator is connected to the input end of the second three-terminal voltage regulator, the ground end of the second three-terminal voltage regulator is grounded, the output end of the second three-terminal voltage regulator is connected to the input end of the third three-terminal voltage regulator, the ground end of the third three-terminal voltage regulator is grounded, and the output end of the third three-terminal voltage regulator is connected to the battery module; The output terminals of the first three-terminal voltage stabilizer, the second three-terminal voltage stabilizer and the third three-terminal voltage stabilizer are all provided with lead-out terminals corresponding to the stabilized voltage; The specific model of the first three-terminal voltage regulator is LM7818, the specific model of the second three-terminal voltage regulator is LM7809, and the specific model of the third three-terminal voltage regulator is LM7805; The battery module includes a boost unit, a charging management unit, and a battery discharge management unit; the battery is connected to the input end of the boost unit, and the output end of the boost unit is connected to the charging management unit and the discharge management unit respectively; the power module and the external power supply are connected to the battery through the charging management unit, and the discharge management unit is connected to the charging management unit and the power module; The charging management unit includes a third relay, a first triode, a second triode, a third triode, a fourth triode, a first light emitting diode, a second light emitting diode, a second controllable voltage regulator, a second variable resistor, a third variable resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a battery protection chip, a second MOS tube and a third MOS tube. The external power supply and the power module are commonly connected to one of the contacts of the third relay. The other contact of the third relay is connected to the emitter of the first triode, the collector of the first triode is connected to the anode of the first light emitting diode, the cathode of the first light emitting diode is connected to the positive electrode of the battery, and a lead-out terminal is set at the common end of the first triode and the first light emitting diode; the other contact of the third relay is also connected to one end of the eighth resistor, the other end of the eighth resistor is connected to the collector of the second triode, and the The emitter of the second triode is connected to the emitter of the third triode, and the collector of the third triode is connected to the common end of the first light-emitting diode and the battery; the anode of the second controllable voltage regulator is grounded, the cathode of the second controllable voltage regulator is connected to the base of the second triode, the other end of the tenth resistor is connected to the common end of the eighth resistor and the second triode, one end of the ninth resistor is also connected to the common end of the eighth resistor and the second triode, the other end of the ninth resistor is connected to the base of the first triode, one end of the second variable resistor is grounded, and the other end is connected to the common end of the second triode and the third triode, and the sliding end of the second variable resistor is connected to the reference electrode of the second controllable voltage regulator; one end of the eleventh resistor is grounded, and the other end is connected to one end of the third variable resistor, the other end of the third variable resistor is connected to the base of the third triode, and the other end of the third variable resistor is also connected to the sliding end; The specific model of the battery protection chip is DW01; The positive electrode of the battery is connected to the VCC pin of the battery protection chip; the GND pin of the battery protection chip is connected to the source of the second MOS tube, the drain of the second MOS tube is connected to the drain of the third MOS tube, and the source of the third MOS tube is grounded; the OD pin of the battery protection chip is connected to the gate of the second MOS tube; the OC pin of the battery protection chip is also connected to the base of the fourth transistor, the anode of the second light-emitting diode is connected to the lead-out terminal set at the common end of the boost chip and the first inductor; the cathode of the second light-emitting diode is connected to the collector of the fourth transistor, and the base of the third transistor is grounded; The discharge management unit includes a first inverter, a second inverter, a third inverter, a fourth inverter, a sixth triode, a seventh triode, a first optical coupler, a first capacitor, a second capacitor and a third capacitor; the input end of the first inverter is connected to the lead-out terminal set at the common end of the first triode and the first light-emitting diode; the output end of the first inverter is connected to the base of the fifth triode, the emitter of the fifth triode is grounded, the collector of the fifth triode is connected to the cathode of the light-emitting device in the first optical coupler, the anode of the light-emitting device in the first optical coupler is connected to the lead-out terminal set at the common end of the boost chip and the first inductor, the negative electrode of the photosensor of the first optical coupler is connected to the input end of the third inverter, the output end of the third inverter is connected to the input end of the fourth inverter, the output end of the fourth inverter is connected to the base of the sixth triode, the emitter of the sixth triode is grounded; the emitter of the sixth triode is also connected to the base of the seventh triode, and the emitter of the seventh triode is grounded; One end of the coil in the first relay is connected to the positive electrode of the photosensor in the first optical coupler, and the other end of the coil in the first relay is connected to the collector of the sixth transistor. When the coil in the first relay is energized, the two contacts of the second relay are disconnected. One end of the first capacitor is connected to the common end of the first optical coupler and the third inverter, and the other end of the first capacitor is grounded; one end of the second capacitor is connected to the common end of the first relay and the second relay, and the other end of the second capacitor is grounded; one end of the third capacitor is connected to the common end of the first relay and the second relay, and the other end of the third capacitor is grounded; One end of the coil in the second relay is connected to the positive electrode of the photosensor in the first optical coupler, and the other end of the coil in the second relay is connected to the collector of the seventh transistor. When the coil in the second relay is energized, two contacts of the second relay are engaged. One end of the coil in the third relay is connected to the positive electrode of the photosensitive device in the first optical coupler, and the other end of the coil in the second relay is connected to the collector of the seventh transistor. When the coil in the third relay is energized, the two contacts of the third relay are engaged; The input end of the second inverter is connected to the output end of the first inverter, and the output end of the second inverter is provided with a lead end; The LED module includes a second LED lamp group, which includes a driving chip U2, a fifth MOS tube Q16 and a second LED lamp. The driving chip U2 is connected to a power module, and the specific model of the driving chip U2 is ORG5811. The OUT pin of the driving chip U2 is connected to the gate of the fifth MOS tube Q16, and the VREF pin of the driving chip U2 is connected to the source of the fifth MOS tube Q16. The second LED lamp includes a plurality of light-emitting diodes, and the plurality of light-emitting diodes are connected in series to form a second LED lamp. The anode of the second LED lamp is connected to the power module, and the cathode of the second LED lamp is connected to the drain of the fifth MOS tube Q16.

2. The LED driving circuit with self-charging and self-discharging of the battery as claimed in claim 1, characterized in that: The boost unit includes a boost chip and a first inductor. The specific model of the boost chip is LC3311. The IN pin of the boost chip is connected to the positive electrode of the battery. One end of the first inductor is connected to the common end of the boost chip and the battery. The other end of the first inductor is connected to the LX pin of the boost chip. The common end of the boost chip and the first inductor is also provided with a lead-out end.

3. The LED driving circuit with self-charging and self-discharging of the battery as claimed in claim 1, characterized in that: The LED module includes a switching switch and an LED lamp, the switching switch includes a fourth MOS tube and a twelfth resistor, the external power supply and the battery module are both connected to the gate of the fourth MOS tube, the source of the fourth MOS tube is grounded, the drain of the fourth MOS tube is connected to the source through the twelfth resistor, and the drain of the fourth MOS tube is also connected to the LED lamp.

4. A battery self-charging and self-discharging LED driving method based on the battery self-charging and self-discharging LED driving circuit according to claim 1, characterized in that: The method is specifically as follows: an external power supply charges the battery and supplies power to the LED module to light up the LED lamp. After the battery is fully charged, the circuit switches to the battery to supply power to the LED module. After the battery is fully discharged, the circuit automatically connects to the external power supply to achieve self-charging and self-discharging of the battery.

5. The LED driving method with battery self-charging and self-discharging as claimed in claim 4, characterized in that: The charging method of the battery is specifically as follows: the charging voltage and charging current required for charging the battery are calculated, and the second triode, the second adjustable voltage regulator, the second variable resistor and the tenth resistor cooperate to adjust and work so that the charging voltage of the battery meets the requirement; the third triode, the third variable resistor and the eleventh resistor cooperate to adjust and work so that the charging current of the battery meets the requirement; the ninth resistor, the first triode and the first light-emitting diode cooperate to work during the charging process, and when the battery is fully charged, the level of the lead-out terminal set at the common end of the first triode and the first light-emitting diode changes, indicating that the battery charging is completed.

6. The LED driving method with battery self-charging and self-discharging as claimed in claim 5, characterized in that: The discharging method of the battery is specifically as follows: the lead-out terminal arranged at the common end of the first transistor and the first light-emitting diode is connected to the discharge management unit, the level of the lead-out terminal changes and is inverted by the first inverter, and then passes through the fifth transistor to turn on the first optical coupler, and further passes the level signal through the third inverter and the fourth inverter to drive the sixth transistor and the seventh transistor to turn on, thereby powering the coil of the first relay, the coil in the second relay and the coil in the third relay, driving the corresponding contacts to engage or disconnect until the battery is discharged.

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