Direct current controller integrated with ignition function and power generation system
By integrating the ignition coil on the engine and directly driving the ignition device with the control circuit module, the problem of space occupied by the ignition winding in the generator set is solved, and the size of the generator is reduced and the power utilization rate is improved, reducing processing difficulty and production costs.
Patent Information
- Application Number
- CN202510392270.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-07-04
AI Technical Summary
The ignition winding in existing generator sets occupies the output winding space, resulting in an increase in the generator size, complex lines, and reduced output efficiency, increased processing difficulty, and low power of the ignition winding affects the motor utilization rate.
The coil of the ignitor is directly integrated into the engine, and the electrical energy generated by the generator is directly driven by the ignitor through the control circuit module, the ignitor is removed, the ignitor windings in the generator are powered by an isolation voltage division unit and an ignition control unit, and controlled by a microcontroller.
Reduce the generator size, improve the generator integration and power utilization rate, reduce processing difficulty and production costs, and achieve smooth operation of the generator set.
Smart Images
Figure CN120251402A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of generator control, and particularly relates to a DC controller with an integrated ignition function and a power generation system. Background Art
[0002] Automobile AC generator sets are of various types. As devices that efficiently convert mechanical energy into electrical energy, they play an indispensable role in the operation of automobiles. Currently, most mainstream generator sets are 24V DC output generators, which use gasoline or diesel engines as power sources to provide mechanical energy for the generator and then convert it into electrical energy to charge the vehicle power supply or supply power to vehicle electrical appliances. Among them, vehicle electrical appliances include igniters, controllers, lighting circuits, and other electronic devices.
[0003] For existing generator sets, when the igniter actually works, it is necessary to boost the DC current generated by the battery or the generator through circuit components such as a high-voltage coil before ignition can be carried out. Among them, in order to simplify the circuit and the startup of the generator set, the method adopted is to set an output winding and an ignition winding in the generator. The two windings share the magnetic circuit and structure, and the ignition winding supplies power to assist the startup of the igniter during startup.
[0004] Generator sets using this method have defects. If an output winding and an ignition winding are set in a generator, the ignition winding occupies the space of the output winding. The two windings are separately wound, which is difficult to process and will also increase the volume of the generator. It will also make the wiring installation and connection in the generator complex, and the electromagnetic interference generated will directly reduce the output efficiency of the main output winding. Summary of the Invention
[0005] I. Technical Problems to be Solved
[0006] In view of the deficiencies of the prior art, the present invention proposes a DC power generation system with an integrated ignition function, directly integrating the coil of the igniter onto the engine, directly driving the igniter with the electrical energy generated by the generator through a control circuit module, removing the ignition winding in the generator, improving the power generation efficiency of the generator, and reducing the production cost of the generator.
[0007] II. Specific Technical Solutions
[0008] A DC power generation system integrated with an ignition function, comprising an engine, a generator and a control circuit module. The output end of the engine is connected to the input end of the generator, and the control circuit module is electrically connected to the engine and the generator respectively. The control circuit module is used for controlling the generator and the engine; a high-voltage coil is integrated on the engine, and the output end of the generator is connected to the control circuit module through a rectifier bridge unit. The rectifier bridge module includes a microcontroller, and the microcontroller is electrically connected to an isolation voltage division unit and an ignition control unit for controlling the operation of the isolation voltage division unit and the ignition control unit. The first output end of the isolation voltage division unit is used to supply power to the input end of the ignition control unit, the second output end of the isolation voltage division unit is used to supply power to the microcontroller, and the output end of the igniter control unit is electrically connected to the high-voltage coil integrated on the engine.
[0009] Implementation principle, working principle:
[0010] In the existing method of integrating the ignition winding and the output winding, the power output of the engine is transmitted to the generator, and the electric energy of the generator is output to the igniter, lighting, and other electrical appliances after AC-DC conversion. Since the igniter uses an AC voltage, in this case, the igniter is directly driven by the alternating current directly generated by the generator by adding a winding in the generator. However, for this method, an output winding and an ignition winding are provided in the generator. The ignition winding occupies the space of the output winding, and the two windings are separately wound, which is difficult to process and will also increase the volume of the generator. It will also make the wiring of the circuits in the generator complex. The electromagnetic interference generated will directly reduce the output efficiency of the main output winding, increase the workload and difficulty of winding, and reduce the production efficiency. Moreover, since the ignition winding itself has a low power, the extra occupied space affects the utilization rate of the motor.
[0011] However, what is different from the prior art in this solution is that the power generation winding in the generator is removed, which reduces the space occupied by the winding in the generator, is conducive to reducing the size of the generator, and also improves the integration degree of the generator and the utilization rate of the generator space. Since the ignition control unit is integrated in the control circuit module and the ignition coil of the igniter is integrated into the engine, all the wiring is carried out externally, effectively reducing the processing difficulty and improving the production efficiency. A part of the electric energy generated by the generator is stored in the storage battery or directly output, and the other part is separated by the isolation voltage division unit to supply power to the microcontroller and the ignition control unit, making the utilization rate of the generated electric energy higher and the circuit design difficulty lower.
[0012] Preferably, the DC power generation system also includes a battery, the positive electrode of the battery is respectively connected to the positive electrode of the isolation voltage divider unit and the positive electrode of the rectifier bridge unit, and the negative electrode of the battery is respectively connected to the positive electrode of the isolation voltage divider unit and the negative electrode of the rectifier bridge unit; the beneficial effect of this preferred embodiment is that, through the setting of the battery, the electricity of the battery can be directly used to ignite the engine through the isolation voltage divider unit and the ignition control unit, thereby reducing the difficulty of starting the generator set.
[0013] Preferably, it also includes a reverse-drag starting unit and a half-bridge driving unit, the positive pole of the input end of the reverse-drag starting unit is connected to the positive pole of the battery, and the negative pole of the input end of the reverse-drag starting unit is connected to the negative pole of the battery; the output end of the reverse-drag starting unit is electrically connected to the output end of the generator; the output end of the microcontroller is connected to the signal input end of the half-bridge driving unit, and the output end of the half-bridge driving unit is connected to the driving end of the reverse-drag starting unit, and the microcontroller controls the operation of the reverse-drag starting unit through the half-bridge driving unit. The beneficial effect of this preferred embodiment is that when the battery power is insufficient, the reverse-drag starting unit and the half-bridge driving unit can be driven by the microcontroller to convert the direct current of the battery into alternating current, thereby driving the magnetic motor to rotate, reducing the load of the engine, and being more conducive to starting the engine group.
[0014] Preferably, the isolation voltage dividing unit includes a current mode controller U3 and a resistor R2, wherein a first branch of a second end of the resistor R2 is connected to a V CC The second branch of the second end of the resistor R2 is connected to the positive electrode of the polar capacitor C10, the negative electrode of the polar capacitor C10 is grounded, and a non-polar capacitor C9 is connected in parallel at both ends of the polar capacitor C10; the Out end of the current mode controller U3 is connected to the G pole of the MOS tube T2 after the series resistor R5, the D pole of the MOS tube T2 is connected to the ground after the series resistor R11, the S pole of the MOS tube T2 is connected to the negative pole of the dual output transformer input end, and the positive pole of the dual output transformer input end is connected to the first end of the resistor R2 and then to the positive pole of the rectifier bridge unit; the preferred advantageous effect is that, through the setting of the isolation voltage divider unit, a part of the direct current output by the generator can be converted into alternating current, and then output through the dual output transformer therein, wherein the setting of the dual output transformer can be stepped up or stepped down to convert the input voltage into two different outputs, so as to facilitate power supply for more electrical appliances with different parameter requirements.
[0015] Preferably, the positive electrode of the first output terminal of the dual-output transformer is connected to the positive electrode of diode D4. The first branch of the negative electrode of diode D4 is connected to the ignition control unit and provides a first DC input thereto. The second branch of the negative electrode of diode D4 is connected to the input terminal of the DC step-down sub-module U1, and the output terminal of the DC step-down sub-module U1 provides a first DC output. The positive electrode of the second output terminal of the dual-output transformer is connected to the positive electrode of diode D9. The first branch of the negative electrode of diode D9 provides a second DC output for the half-bridge drive unit. The second branch of the negative electrode of diode D9 is connected to the input terminal of the DC step-down sub-module U2, and the output terminal of the DC step-down sub-module U2 provides a second current input for the microcontroller. The beneficial effect of this preference is that through the setting of diodes D4 and D9, the alternating current at the two output terminals of the dual-output transformer can be converted into direct current. Then, through the DC step-down sub-modules integrated at the two output terminals of the dual-output transformer, the two DC outputs can be converted into 4 or more DC outputs with different values, which can supply power to more electrical appliances. While improving the integration degree of the controller circuit sub-module, the power supply range is wider and the circuit is also simpler.
[0016] Preferably, the ignition control unit includes an optocoupler U10. The positive electrode of the light-emitting side of the optocoupler U10 is connected to the ignition signal input terminal through resistor 48, and the signal of the ignition signal input terminal is provided by the microcontroller. The negative electrode of the light-emitting side of the optocoupler U10 is grounded. The collector of the photosensitive side of the optocoupler is connected to resistor R49 and then connected to the first branch of the negative electrode of diode D4. The emitter of the photosensitive side of the optocoupler U10 is connected to the B pole of triode Q17, and the C pole of triode Q17 is connected to the first branch of the negative electrode of diode D4. The first branch of the negative electrode of diode D4 is also connected to the first coil of the high-voltage package. The E pole of triode Q17 is connected to the first end of resistor R57 and the D pole of MOS transistor Q18 through resistor R54 respectively. The D pole of MOS transistor Q18 is connected to the second coil of the high-voltage package, and the S pole of MOS transistor Q18 is connected to the second end of resistor R57 and then grounded. The beneficial effect of this preference is that when the microcontroller provides an ignition signal, the light-emitting side of the optocoupler U10 emits light, and its photosensitive side conducts, which also makes triode Q17 conduct and MOS transistor Q18 conduct at the same time. Then, the primary coil of the high-voltage package is continuously discharged, realizing high-voltage output and igniting different cylinders of the engine.
[0017] Preferably, a trigger detection unit is connected to the output end of the DC step-down sub-module U1. The trigger detection unit includes a resistor R23 and an optocoupler U4. The first end of the resistor R23 is connected to the output end of the DC step-down sub-module U1, and the second end of the resistor R23 is connected to the positive electrode of the light-emitting side of the optocoupler U4. The negative electrode of the light-emitting side of the optocoupler U4 is connected to the C end of the triode Q9. The B end of the triode Q9 is connected to the negative electrode of the diode D16 through a resistor R41. A capacitor C25 is connected in parallel at both ends of the resistor R41. The positive electrode of the diode D16 is connected to the rotation speed sensor through a resistor. The rotation speed sensor is used to detect the rotation speed of the generator. The E end of the triode Q9 is grounded. The C end of the photosensitive side of the optocoupler U4 is connected to the output end of the DC step-down sub-module U2 through a resistor R22. A resistor R24 is connected between the optocoupler U4 and the resistor R22 through a branch. The other end of the resistor R24 is connected to the trigger signal input end of the microcontroller. The setting of the trigger detection unit makes the triode Q9 in a conducting state through the trigger signal sent by the rotation speed sensor, thereby making the light-emitting side of the optocoupler U4 connected, making the photosensitive side have electricity. The microcontroller controls the ignition of the igniter according to the trigger signal or electrical signal on the photosensitive side to achieve feedback, so that the rotation speed of the generator or engine is in the same frequency as the ignition speed, making the operation of the generator stable.
[0018] Preferably, an oil level detection unit is also connected to the output end of the DC step-down sub-module U2. The oil level detection unit includes an optocoupler U14 and a resistor R61. The first end of the resistor R61 is connected to the output end of the DC step-down sub-module U2, and the second end of the resistor R61 is connected to the positive electrode of the light-emitting side of the optocoupler U14. An oil level sensor is connected to the negative electrode of the light-emitting side of the optocoupler U14. The C end of the photosensitive side of the optocoupler U14 is connected to the output end of the DC step-down sub-module U2 through R62. The E end of the photosensitive side of the optocoupler U14 is grounded. A branch is connected between the resistor R62 and the optocoupler U14 to the first end of a resistor R63. The first branch of the second end of the resistor R63 is connected to the oil level signal receiving end of the microcontroller, and the second branch of the second end of the resistor R63 is grounded through a capacitor C42. The beneficial effect of this preference is that the setting of the oil level detection unit can output the oil level signal to the microcontroller when the oil quantity reaches the set value, which is convenient for subsequent alarms or reminders.
[0019] The beneficial effects of the present invention are:
[0020] 1. This solution removes the power generation winding in the generator, reducing the space occupied by the winding in the generator, which is beneficial for reducing the size of the generator and improving the integration degree of the generator and the utilization rate of the generator space. Since the ignition control unit is integrated in the control circuit module and the ignition coil of the igniter is integrated into the engine, both are wired externally, effectively reducing the processing difficulty and improving the production efficiency. Part of the electric energy generated by the generator is stored in the storage battery or directly output, and the other part is separated by the isolation voltage division unit to supply power to the microcontroller and the ignition control unit, making the utilization rate of the generated electric energy higher and the circuit design difficulty lower.
[0021] 2. Through the cooperation of the trigger detection unit and the ignition control unit by the microcontroller of this solution, the ignition position and frequency are synchronized with the engine operation, making the operation of the generator set more stable. Description of the Drawings
[0022] Figure 1 It is a logic schematic diagram of the DC power generation system integrating the ignition function of the present invention.
[0023] Figure 2 It is a circuit schematic diagram of the output end of the generator of the present invention.
[0024] Figure 3 It is a wiring schematic diagram of the microcontroller of the present invention.
[0025] Figure 4 It is a circuit schematic diagram of the half-bridge drive unit of the present invention.
[0026] Figure 5 It is a circuit schematic diagram of the isolation voltage division unit of the present invention.
[0027] Figure 6 It is a circuit schematic diagram of the ignition control unit of the present invention.
[0028] Figure 7 It is a circuit schematic diagram of the trigger detection unit of the present invention.
[0029] Figure 8 It is a circuit schematic diagram of the oil level detection unit of the present invention.
[0030] Description of the Reference Numerals:
[0031] Rectifier bridge unit 1, isolation voltage division unit 2, ignition control unit 3, storage battery 4, back-dragging starting unit 5, half-bridge drive unit 6, trigger detection unit 7, oil level detection unit 8. Detailed Embodiments
[0032] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the scope of protection of the present invention more clearly defined. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.
[0033] As Figure 1-8 shown:
[0034] A DC power generation system integrated with an ignition function includes an engine, a generator, and a control circuit module. The output end of the engine is connected to the input end of the generator. It is common knowledge for those skilled in the art that the engine drives the generator, and no further description will be given here. The control circuit module is electrically connected to the engine and the generator respectively, and the control circuit module is used for controlling the generator and the engine.
[0035] During implementation, a high-voltage coil is integrated on the engine. Specifically, the high-voltage coil in this embodiment is of the TJ113C type. The output end of the generator is connected to the control circuit module through a rectifier bridge unit 1. The connection between the rectifier bridge unit 1 and the generator is as Figure 3 ; During implementation, the control circuit module includes a microcontroller U9. Specifically, the microcontroller U9 in this embodiment is a single-chip microcomputer, and the specific model selected in this embodiment is STM32F303RBT6. The wiring is as Figure 2 . The microcontroller U9 is connected to the components of the isolation voltage division unit 2 and the ignition control unit 3 through signal or pulse input or output terminals to realize the operation control of the isolation voltage division unit 2 and the ignition control unit 3; The first output end of the isolation voltage division unit 2 is used to supply power to the input end of the ignition control unit 3, the second output end of the isolation voltage division unit 2 is used to supply power to the microcontroller, and the output end of the igniter control unit 3 is electrically connected to the high-voltage coil integrated on the engine.
[0036] What is different between this solution and the prior art is that this solution removes the power generation winding in the generator, reducing the space occupied by the winding in the generator, which is beneficial to reducing the size of the generator and also improving the integration degree of the generator and the utilization rate of the generator space; Since the ignition control unit 3 is integrated in the control circuit module and the ignition coil of the igniter is integrated into the engine, all are wired externally, effectively reducing the processing difficulty and improving the production efficiency; Part of the electric energy generated by the generator is stored in the battery 4 or directly output, and the other part is separated by the isolation voltage division unit 2 to supply power to the microcontroller U9 and the ignition control unit 3, making the utilization rate of the generated electric energy higher and the circuit design difficulty lower.
[0037] The DC power generation system in this solution further includes a storage battery 4. The positive electrode of the storage battery 4 is respectively connected to the positive electrode of the isolation voltage dividing unit 2 and the positive electrode of the rectifier bridge unit 1, and the negative electrode of the storage battery 4 is respectively connected to the positive electrode of the isolation voltage dividing unit 2 and the negative electrode of the rectifier bridge unit 1. The advantage of such connection is that the electricity from the generator to the rectifier bridge unit 1 directly charges the storage battery or supplies power to the isolation voltage dividing unit 2. The power supply of the isolation voltage dividing unit 2 can also directly come from the storage battery 4, enabling more power supply methods for the isolation voltage dividing unit 2, reducing the starting difficulty of the generator set, and reducing starting failures.
[0038] During implementation, this solution further includes a back-dragging starting unit 5 and a half-bridge driving unit 6. The back-dragging starting unit 5 and the half-bridge driving unit 7 are respectively as Figure 2 and Figure 4 shown. The positive electrode of the input end of the back-dragging starting unit 5 is connected to the positive electrode of the storage battery 4, and the negative electrode of the input end of the back-dragging starting unit 5 is connected to the negative electrode of the storage battery 4. The output end of the back-dragging starting unit 5 is electrically connected to the three terminals of the output end of the generator electricity. The pulse output terminal of the microcontroller U9 is connected to the signal input end of the half-bridge driving unit 6, and the output end of the half-bridge driving unit 6 is connected to the driving end of the back-dragging starting unit 6. The microcontroller U9 controls the operation of the back-dragging starting unit 5 through the half-bridge driving unit 6. When the power of the storage battery 4 is insufficient, the microcontroller U9 can drive the back-dragging starting unit 5 and the half-bridge driving unit 6 to convert the direct current of the storage battery into alternating current, thereby driving the magneto to rotate, reducing the load of the engine, and being more conducive to the starting of the generator set.
[0039] During implementation, the isolation voltage dividing unit 2 includes a current mode controller U3 and a resistor R2. The current mode controller U3 is specifically a UC3843 type PWM current mode controller. The second end of the first branch of the resistor R2 is connected to the V of the current mode controller U3 CCFor the end connection, the resistor R2 can play a role in voltage division and protection. The second branch at the second end of the resistor R2 is connected to the positive electrode of the polarized capacitor C10, and the negative electrode of the polarized capacitor C10 is grounded. An unpolarized capacitor C9 is also connected in parallel across the two ends of the polarized capacitor C10. This parallel capacitor group can effectively filter the input electrical signal to ensure the stable output of the current mode controller U3. The Out terminal of the current mode controller U3 is connected to the G pole of the MOS transistor T2 after being in series with the resistor R5 to output pulses for it, thereby controlling the on-off of the MOS transistor T2, making the incoming direct current converted into an alternating current output. The connections of the other terminals of the current mode controller U3 are all common knowledge and will not be described in detail here. The D pole of the MOS transistor T2 is grounded after being in series with the resistor R11, and the S pole of the MOS transistor T2 is connected to the negative electrode of the input terminal of the dual-output transformer. The positive electrode of the input terminal of the dual-output transformer is connected to the first end of the resistor R2 and then connected to the positive electrode of the rectifier bridge unit 1. In this solution, through the setting of the isolation voltage division unit 2, the direct current entering the isolation voltage division unit 2 can be converted into an alternating current and then output through the dual-output transformer inside. Among them, the dual-output transformer can achieve the functions of boosting or bucking, and can convert the voltage input to the dual-output transformer into two alternating current voltages with different parameters for output, so as to facilitate the power supply of more electrical appliances with different parameter requirements.
[0040] During implementation, the positive electrode of the first output terminal of the dual-output transformer is connected to the positive electrode of diode D4. Diode D4 can convert the alternating current at the first output terminal into direct current. The first branch of the negative electrode of diode D4 is connected to the ignition control unit and provides it with a first DC input, and the specific DC voltage is 20V. The second branch of the negative electrode of diode D4 is connected to the input terminal of the DC buck sub-module U1. The output terminal of the DC buck sub-module U1 provides a first DC output, and the voltage of this first DC output is 5V. Among them, between the DC buck sub-module U1 and diode D4, there are also a non-polar capacitor module C6 and a polar capacitor C4 (the positive electrode of C4 is connected to the negative electrode of diode D4) connected in parallel through two branches. The non-polar capacitor module C6 and the polar capacitor C4 can effectively decouple and filter, ensuring the stability of the output 20V DC output; the positive electrode of the second output terminal of the dual-output transformer is connected to the positive electrode of diode D9. Through this diode D9, the alternating current input in the transformer is converted into direct current. The first branch of the negative electrode of diode D9 provides a second DC output for the half-bridge drive unit 6, that is, provides a 12V DC output. In order to make the second DC output stable, the second DC output is additionally connected in parallel with a polar capacitor C14, a non-polar capacitor C15, and a series connection of R6 and R9 through three branches respectively, and the other ends of the three branches are all grounded. Because this second output needs to supply power to the half-bridge drive unit 6 and the microcontroller U9, two additional resistors are added to reduce oscillation and further improve the stability of the output voltage. The second branch of the negative electrode of diode D9 is connected to the input terminal of the DC buck sub-module U2. The output terminal of the DC buck sub-module U2 provides a second current input for the microcontroller. The other end of the second current input is connected in parallel with a polar capacitor C3 and a non-polar capacitor C5 through two branches respectively, further making the 3.3V voltage input of the microcontroller U9 more stable; specifically, through the setting of diodes D4 and D9, the alternating current at the two output terminals of the dual-output transformer can be converted into direct current, and then through the DC buck sub-modules U1 and U2 integrated at the two output terminals of the dual-output transformer, the two DC outputs can be converted into 4 or more different values of DC outputs, which can supply power to more electrical appliances. While improving the integration degree of the controller circuit sub-module, the power supply range is wider and the circuit is also simpler.
[0041] During implementation, the ignition control unit 3 includes an optocoupler U10. The positive electrode of the light-emitting side of the optocoupler U10 is connected to the ignition signal input terminal through a resistor R48, and the signal of the ignition signal input terminal is provided by the microcontroller. The negative electrode of the light-emitting side of the optocoupler U10 is grounded. When the ignition voltage signal enters the light-emitting side of the optocoupler U10, the light-emitting side emits light. The collector of the photosensitive side of the optocoupler U10 is connected to the first branch of the negative electrode of the diode D4 after connecting the resistor R49. The emitter of the photosensitive side of the optocoupler U10 is connected to the B pole of the triode Q17, and the C pole of the triode Q17 is connected to the first branch of the negative electrode of the diode D4. The first branch of the negative electrode of the diode D4 is also connected to the first coil of the high-voltage package. The E pole of the triode Q17 is connected to the first end of the resistor R57 and the D pole of the MOS transistor Q18 through the resistor R54 respectively. The D pole of the MOS transistor Q18 is connected to the second coil of the high-voltage package, and the S pole of the MOS transistor Q18 is connected to the second end of the resistor R57 and then grounded. When the microcontroller provides and issues an ignition signal, the light-emitting side of the optocoupler U10 emits light, its photosensitive side conducts, and at the same time the triode Q17 conducts and the MOS transistor Q18 conducts. According to the output frequency of the ignition signal, the primary coil of the high-voltage package can be continuously controlled to discharge, realizing high-voltage output and igniting different cylinders of the engine.
[0042] During implementation, a trigger detection unit 7 is connected to the output terminal of the DC step-down sub-module U1. The trigger detection unit 7 includes a resistor R23 and an optocoupler U4. The first end of the resistor R23 is connected to the output terminal of the DC step-down sub-module U1, and the second end of the resistor R23 is connected to the positive electrode of the light-emitting side of the optocoupler U4. The negative electrode of the light-emitting side of the optocoupler U4 is connected to the C terminal of the triode Q9. The B terminal of the triode Q9 is connected to the negative electrode of the diode D16 through a resistor R41, and a capacitor C25 is connected in parallel at both ends of the resistor R41. The positive electrode of the diode D16 is connected to the rotation speed sensor through a resistor, and the rotation speed sensor is used to detect the rotation speed of the generator. The E terminal of the triode Q9 is grounded. The C terminal of the photosensitive side of the optocoupler U4 is connected to the output terminal of the DC step-down sub-module U2 through a resistor R22. A resistor R24 is connected between the optocoupler U4 and the resistor R22 through a branch, and the other end of the resistor R24 is connected to the trigger signal input terminal of the microcontroller. The setting of the trigger detection unit 7 makes the triode Q9 in a conducting state through the trigger signal sent by the rotation speed sensor, and then makes the light-emitting side of the optocoupler U4 connected, so that the photosensitive side has electricity. The microcontroller U9 controls the ignition of the igniter according to the trigger signal or the electrical signal on the photosensitive side to realize feedback, so that the rotation speed of the generator or the engine is the same as the ignition speed, and the operation of the generator is stable.
[0043] During implementation, the output terminal of the DC buck sub-module U2 is also connected to an oil level detection unit 8. The oil level detection unit 8 includes an optocoupler U14 and a resistor R61. The first end of the resistor R61 is connected to the output terminal of the DC buck sub-module U2, the second end of the resistor R61 is connected to the positive pole of the light-emitting side of the optocoupler U14, the negative pole of the light-emitting side of the optocoupler U14 is connected to an oil level sensor, the C terminal of the photosensitive side of the optocoupler U14 is connected to the output terminal of the DC buck sub-module U2 through R62, the E terminal of the photosensitive side of the optocoupler U14 is grounded, and a branch is connected to the first end of a resistor R63 between the resistor R62 and the optocoupler U14. The first branch of the second end of the resistor R63 is connected to the oil level signal receiving terminal of the microcontroller, and the second branch of the second end of the resistor R63 is grounded through a capacitor C42. The setting of the oil level detection unit 8 can output an oil level signal to the microcontroller when the oil quantity reaches the set value, which is convenient for subsequent alarms or reminders.
[0044] In this solution, the power generation winding in the generator is removed, which reduces the space occupied by the winding in the generator, is beneficial to reducing the size of the generator, and also improves the integration degree of the generator and the utilization rate of the generator space. Since the ignition control unit is integrated in the control circuit module and the ignition coil of the igniter is integrated into the engine, and all are wired externally, the processing difficulty is effectively reduced and the production efficiency is improved. Part of the electric energy generated by the generator is stored in the storage battery 4 or directly output, and the other part is separated by the isolation and voltage division unit 2 to supply power to the microcontroller U9 and the ignition control unit 3, making the utilization rate of the generated electric energy higher and the circuit design difficulty lower. The microcontroller U9 makes the ignition position and frequency synchronized with the engine operation through the cooperation of the trigger detection unit 7 and the ignition control unit 3, making the operation of the generator set more stable.
[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A DC power generation system integrated with an ignition function, comprising an engine, a generator and a control circuit module. The output end of the engine is connected to the input end of the generator, and the control circuit module is electrically connected to the engine and the generator respectively. The control circuit module is used for controlling the generator and the engine; it is characterized in that: A high-voltage ignition coil is integrated on the engine. The output terminal of the generator is connected to the control circuit module through a rectifier bridge unit. The control circuit module includes a microcontroller, which is electrically connected to an isolation voltage division unit and an ignition control unit. The microcontroller is used to control the operation of the isolation voltage division unit and the ignition control unit. The first output terminal of the isolation voltage division unit is used to supply power to the input terminal of the ignition control unit, the second output terminal of the isolation voltage division unit is used to supply power to the microcontroller, and the output terminal of the ignition control unit is electrically connected to the high-voltage ignition coil integrated on the engine.
2. The DC power generation system integrated with an ignition function according to claim 1, characterized in that: The DC power generation system further includes a storage battery. The positive electrode of the storage battery is respectively connected to the positive electrodes of the isolation voltage division unit and the rectifier bridge unit, and the negative electrode of the storage battery is respectively connected to the positive electrodes of the isolation voltage division unit and the rectifier bridge unit.
3. The DC power generation system integrated with an ignition function according to claim 1, characterized in that: It further includes a reverse-dragging starting unit and a half-bridge driving unit. The positive electrode of the input terminal of the reverse-dragging starting unit is connected to the positive electrode of the storage battery, and the negative electrode of the input terminal of the reverse-dragging starting unit is connected to the negative electrode of the storage battery. The output terminal of the reverse-dragging starting unit is electrically connected to the output terminal of the generator. The output terminal of the microcontroller is connected to the signal input terminal of the half-bridge driving unit, and the output terminal of the half-bridge driving unit is connected to the driving terminal of the reverse-dragging starting unit. The microcontroller controls the operation of the reverse-dragging starting unit through the half-bridge driving unit.
4. The DC power generation system integrated with an ignition function according to claim 3, wherein: The isolation and voltage division unit includes a current mode controller U3 and a resistor R2. The first branch of the second end of the resistor R2 is connected to the V end of the current mode controller U3. The second branch of the second end of the resistor R2 is connected to the positive electrode of the polarized capacitor C10. The negative electrode of the polarized capacitor C10 is grounded. An unpolarized capacitor C9 is also connected in parallel across the two ends of the polarized capacitor C10. The Out end of the current mode controller U3 is connected to the G pole of the MOS transistor T2 after being in series with the resistor R5. The D pole of the MOS transistor T2 is grounded after being in series with the resistor R11. The S pole of the MOS transistor T2 is connected to the negative electrode of the input end of the dual-output transformer. The positive electrode of the input end of the dual-output transformer is connected to the first end of the resistor R2 and then connected to the positive electrode of the rectifier bridge unit. CC The Out end of the current mode controller U3 is connected to the G pole of the MOS transistor T2 after being in series with the resistor R5. The D pole of the MOS transistor T2 is grounded after being in series with the resistor R11. The S pole of the MOS transistor T2 is connected to the negative electrode of the input end of the dual-output transformer. The positive electrode of the input end of the dual-output transformer is connected to the first end of the resistor R2 and then connected to the positive electrode of the rectifier bridge unit.
5. The DC power generation system with integrated ignition function according to claim 4, characterized in that: The positive electrode of the first output terminal of the dual-output transformer is connected to the positive electrode of diode D4. The first branch of the negative electrode of diode D4 is connected to the ignition control unit and provides a first DC input for it. The second branch of the negative electrode of diode D4 is connected to the input terminal of the DC step-down sub-module U1, and the output terminal of the DC step-down sub-module U1 provides a first DC output.
6. The DC power generation system integrated with an ignition function according to claim 4, characterized in that: The positive electrode of the second output terminal of the dual-output transformer is connected to the positive electrode of diode D9. The first branch of the negative electrode of diode D9 provides a second DC output for the half-bridge driving unit. The second branch of the negative electrode of diode D9 is connected to the input terminal of the DC step-down sub-module U2, and the output terminal of the DC step-down sub-module U2 provides a second current input for the microcontroller.
7. The DC power generation system integrated with an ignition function according to claim 5, characterized in that: The ignition control unit includes an optocoupler U10. The positive electrode of the light-emitting side of the optocoupler U10 is connected to the ignition signal input terminal through a resistor R48, and the signal of the ignition signal input terminal is provided by the microcontroller. The negative electrode of the light-emitting side of the optocoupler U10 is grounded. The collector of the light-sensitive side of the optocoupler is connected to a resistor R49 and then connected to the first branch of the negative electrode of diode D4. The emitter of the light-sensitive side of the optocoupler U10 is connected to the B pole of a triode Q17, and the C pole of the triode Q17 is connected to the first branch of the negative electrode of diode D4. The first branch of the negative electrode of diode D4 is also connected to the first coil of the high-voltage ignition coil. The E pole of the triode Q17 is respectively connected to the first end of a resistor R57 and the D pole of a MOS transistor Q18 through a resistor R54. The D pole of the MOS transistor Q18 is connected to the second coil of the high-voltage ignition coil, and the S pole of the MOS transistor Q18 is connected to the second end of the resistor R57 and then grounded.
8. The DC power generation system with an integrated ignition function according to claim 5, characterized in that: The output terminal of the DC buck sub-module U1 is connected to a trigger detection unit. The trigger detection unit includes a resistor R23 and an optocoupler U4. The first end of the resistor R23 is connected to the output terminal of the DC buck sub-module U1, and the second end of the resistor R23 is connected to the positive electrode of the light-emitting side of the optocoupler U4. The negative electrode of the light-emitting side of the optocoupler U4 is connected to the C terminal of the triode Q9. The B terminal of the triode Q9 is connected to the negative electrode of the diode D16 through a resistor R41. A capacitor C25 is connected in parallel across both ends of the resistor R41. The positive electrode of the diode D16 is connected to a rotational speed sensor through a resistor, and the rotational speed sensor is used to detect the rotational speed of the generator. The E terminal of the triode Q9 is grounded. The C terminal of the photosensitive side of the optocoupler U4 is connected to the output terminal of the DC buck sub-module U2 through a resistor R22. A resistor R24 is connected between the optocoupler U4 and the resistor R22 through a branch, and the other end of the resistor R24 is connected to the trigger signal input terminal of the microcontroller.
9. The DC power generation system with an integrated ignition function according to claim 5, characterized in that: The output terminal of the DC buck sub-module U2 is also connected to an oil level detection unit. The oil level detection unit includes an optocoupler U14 and a resistor R61. The first end of the resistor R61 is connected to the output terminal of the DC buck sub-module U2, and the second end of the resistor R61 is connected to the positive electrode of the light-emitting side of the optocoupler U14. An oil level sensor is connected to the negative electrode of the light-emitting side of the optocoupler U14. The C terminal of the photosensitive side of the optocoupler U14 is connected to the output terminal of the DC buck sub-module U2 through R62. The E terminal of the photosensitive side of the optocoupler U14 is grounded. A branch is connected between the resistor R62 and the optocoupler U14 to the first end of a resistor R63. The first branch of the second end of the resistor R63 is connected to the oil level signal receiving terminal of the microcontroller, and the second branch of the second end of the resistor R63 is grounded through a capacitor C42.