CN211524983U - Energy-controllable alternating-current ignition system - Google Patents
Energy-controllable alternating-current ignition system Download PDFInfo
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- CN211524983U CN211524983U CN201922270923.XU CN201922270923U CN211524983U CN 211524983 U CN211524983 U CN 211524983U CN 201922270923 U CN201922270923 U CN 201922270923U CN 211524983 U CN211524983 U CN 211524983U
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Abstract
The utility model discloses an energy-controllable alternating current ignition system, which comprises a power supply module, a controller module, a signal driving module, a BOOST boosting module, an H bridge driving module and an actuator module; the input end of the BOOST boosting module is connected with the power supply module, the output end of the BOOST boosting module is connected with the input end of the H-bridge driving module, and the control end of the BOOST boosting module is connected with the controller module through the signal driving module; the control end of the H-bridge driving module is connected with the controller module through the signal driving module; the actuator module comprises an ignition coil and an ignition plug, the ignition coil comprises a primary coil and a secondary coil, the primary coil is connected with the output end of the H-bridge driving module, and the secondary coil is connected with the ignition plug. The system can accurately control the energy of the ignition system, and avoids the waste of energy.
Description
Technical Field
The utility model relates to an electric ignition system technical field, the controllable interchange ignition system of concretely relates to energy.
Background
The current mainstream ignition system is inductance energy storage formula ignition system and electric capacity energy storage formula ignition system, and electric capacity energy storage formula ignition system is more general now, and two kinds of methods theory of operation are different, and all have the limitation to a certain extent.
1. Inductance energy storage formula ignition system:
(1) the working principle is as follows: the inductive energy storage type electric ignition device mainly comprises a storage battery, an ignition switch K1, a breaker K2, a resistor, an ignition coil and a capacitor. The direct current returns to the storage battery through an ignition switch, a resistor and an interrupter K2 of the primary winding of the ignition coil, and capacitors are connected in parallel at two ends of the interrupter. K1 is closed, K2 is disconnected, current charges the capacitor through R-L-C until the capacitor is fully charged, the circuit is disconnected, when the breaker K2 is closed, the current passes through the primary coil instantly, and the secondary coil induces great electromotive force to realize instant ignition of the spark plug.
(2) Limitation: the energy stored in the capacitor is wasted, the spark duration is long, and the energy loss is serious; the ignition energy is not controllable and cannot be selected according to the working condition.
2. Capacitive energy storage formula ignition system:
(1) the working principle is as follows: the capacitor energy storage type ignition system mainly comprises a direct current booster (an oscillator, a transformer and a rectifier), an energy storage capacitor, a thyristor and a thyristor triggering circuit. When the ignition switch is switched on, the oscillator starts to work, low-voltage direct current of a power supply is converted into low-voltage alternating current, the low-voltage alternating current is boosted through the transformer, the secondary side of the transformer outputs alternating current of about 400V, direct current of about 400V is output through the rectifier, and the energy storage capacitor is charged. The ignition switch is switched on in the energy storage process, and the energy storage process is not controlled by the ignition signal. When an ignition signal arrives, the trigger circuit generates trigger pulses to enable the thyristor to be conducted rapidly, the energy storage capacitor discharges to the primary winding of the ignition coil, the primary current is increased rapidly, the secondary coil induces high induced electromotive force, and the spark plug gap generates electric sparks to ignite combustible gas to achieve ignition.
(2) Limitation: compared with an inductive energy storage type ignition system, the spark duration is short, energy loss is small, but the energy of the spark cannot be controlled, and the ignition energy cannot be adjusted according to different working conditions.
The existing ignition devices of the internal combustion engine mainly adopt the two types, generally adopt a capacitive energy storage type ignition system in many cases, and have better universality in various aspects compared with an inductive energy storage type ignition system, but the ignition energy is always unchanged and energy waste is easily caused due to different working conditions, the existing mainstream technology cannot realize the control of spark energy, and the adjustment of the spark energy is required to be realized in a new mode along with the development of industry and the increasing focus of energy conservation by people.
SUMMERY OF THE UTILITY MODEL
The utility model provides a controllable interchange ignition system of energy, this system have solved the uncontrollable energy of current ignition system, cause the extravagant problem of energy.
The utility model discloses a technical means as follows:
an energy-controllable alternating current ignition system comprises a power supply module, a controller module, a signal driving module, a BOOST module, an H-bridge driving module and an actuator module;
the input end of the BOOST module is connected with the power supply module, the output end of the BOOST module is connected with the input end of the H-bridge driving module, and the control end of the BOOST module is connected with the controller module through the signal driving module;
the control end of the H-bridge driving module is connected with the controller module through the signal driving module;
the actuator module comprises an ignition coil and an ignition plug, the ignition coil comprises a primary coil and a secondary coil, the primary coil is connected with the output end of the H-bridge driving module, and the secondary coil is connected with the ignition plug.
The BOOST control circuit further comprises a voltage feedback module, wherein the input end of the voltage feedback module is connected with the output end of the BOOST module, and the output end of the voltage feedback module is connected with the controller module.
The current feedback module is arranged between the output end of the H-bridge driving module and the primary side coil, and the output end of the current feedback module is connected with the controller module.
Further, the power supply module comprises a storage battery for supplying electric energy and an auxiliary power supply module for converting the voltage of the storage battery into a voltage which can be used for supplying other modules.
Further, the intelligent controller also comprises an input module, and the input module is connected with the controller module.
Further, the intelligent control system also comprises a display module, wherein the display module is connected with the controller module.
Further, the signal driving circuit includes a first signal driving unit, a second signal driving unit, and a third signal driving unit;
the controller module is connected with the control end of the BOOST module through the third signal driving unit;
the controller module is connected with the control end of the H-bridge driving module through the first signal driving unit and the second signal driving unit.
Furthermore, the H-bridge driving modules are provided with a plurality of groups, and each group of H-bridge driving modules is connected with one actuator module.
Compared with the prior art, controllable interchange ignition system of energy have following advantage, this system is through having set up controller module, BOOST BOOST module and H bridge drive module, the controller module can control the turn-on or the off-time of BOOST BOOST module and/or H bridge drive module, and then the electric current size or the time of striking sparks on the change input the sparking plug, controllable when having realized the sparking plug energy.
Drawings
Fig. 1 is a schematic diagram of an energy controlled ac ignition system disclosed in the present invention;
fig. 2 is a schematic diagram of a voltage feedback module.
In the figure: 10. the device comprises a storage battery, 11, an auxiliary power supply, 2, a controller module, 30, a first signal driving unit, 31, a second signal driving unit, 32, a third signal driving unit, 4, a BOOST module, 5, an H bridge driving module, 6, an actuator module, 7, a voltage feedback module, 8 and a current feedback module.
Detailed Description
Fig. 1 shows an energy-controllable ac ignition system according to the present invention, which includes a power module, a controller module 2, a signal driving module, a BOOST module 4, an H-bridge driving module 5, and an actuator module 6;
the input end of the BOOST module 4 is connected with the power supply module, the output end of the BOOST module is connected with the input end of the H-bridge driving module 5, and the control end of the BOOST module is connected with the controller module 2 through the signal driving module;
the control end of the H-bridge driving module 5 is connected with the controller module 2 through the signal driving module;
the actuator module 6 comprises an ignition coil and an ignition plug, the ignition coil comprises a primary coil and a secondary coil, the primary coil is connected with the output end of the H-bridge driving module 5, and the secondary coil is connected with the ignition plug.
Specifically, in the utility model discloses in, as shown in fig. 1, power module is including being used for providing the battery 10 of electric energy and being used for with the voltage conversion of battery 10 becomes the auxiliary power module 11 that can be used to for other module power supplies, battery 10 can export 7.2V's voltage, auxiliary power module 11 includes two sets of power chips 34063 and a set of power chip LM2596, two sets of power chips 34063 convert the 7.2V voltage of battery output into 15V voltage and 10V voltage respectively, power chip LM2596 converts the 7.2V voltage of battery output into 3.3V's voltage, auxiliary power module is used for supplying power for different modules. The BOOST module 4 includes a polar capacitor C5, an inductor L1, a switching transistor MOS1, a zener diode D7, and a polar capacitor C6, an input end of the BOOST module 4 is connected to the battery 10, an output end of the BOOST module is connected to an input end of the H-bridge driving module 5, and a control end of the BOOST module is connected to the controller module through a signal driving module, in this embodiment, the controller module 2 is composed of a minimum control system composed of a chip STM32F103, and the signal driving module includes a first signal driving unit 30, a second signal driving unit 31, and a third signal driving unit 32, which are identical in structure, in this embodiment, the first signal driving unit 30, the second signal driving unit 31, and the third signal driving unit 32 are a bridge driving circuit composed of a half-bridge driving chip IR 2104.
Specifically, the third signal driving unit 32 includes a third half-bridge driving chip IR3, a polarity capacitor C8, a polarity capacitor C7, a diode D8, a diode D9, a diode D10, a resistor R9, a resistor R10, a resistor R11, and a resistor R12, the third half-bridge driving chip IR3 employs a half-bridge driver IR2104, an IN pin of the half-bridge driver IR2104 is connected to one output pin of the STM32F103 chip, a COM pin of the half-bridge driver IR2104 is isolated from a power supply (15V) by the polarity capacitor C8, the diode D9 is connected IN parallel between the VCC pin and the VB pin, a diode D8 (cathode) and a resistor R9 connected IN parallel are connected to an HO pin of the half-bridge driver IR2104, the other end of the diode D8 (anode) and the resistor R5 is connected to one end of the resistor R5857323, the other end of the resistor R10 is connected to a negative terminal of the polarity capacitor C7, a positive terminal of the polarity capacitor C7 is connected to the VB pin of the half-bridge driver IR 639, and one end of the resistor R7 is, the LO pin of the half-bridge driver IR2104 is connected with the cathode of a diode D10 and one end of a resistor R11, the anode of a diode D10 and the other end of the resistor R11 are connected and then connected with one end of a resistor R12, the other end of the resistor R12 is grounded, the anode of a diode D10 is further connected with the control end of a switching tube MOS1, and an STM32F103 chip can control the switching of the switching tube MOS1 through a first signal driving unit.
The second signal driving unit 31 includes a second half-bridge driving chip IR2, a polar capacitor C4, a polar capacitor C3, a diode D4, a diode D2, a diode D6, a resistor R5, a resistor R6, a resistor R7 and a resistor R8, the second half-bridge driving chip IR2 adopts a half-bridge driver IR2104, and an IN pin of the half-bridge driver IR2104 is connected with one output pin of the STM32F103 chip;
the first signal driving unit 30 includes a first half-bridge driving chip IR1, a polar capacitor C1, a polar capacitor C2, a diode D3, a diode D1, a diode D5, a resistor R4, a resistor R3, a resistor R2, and a resistor R1, the first half-bridge driving chip IR1 employs a half-bridge driver IR2104, and an IN pin of the half-bridge driver IR2104 is connected to an output pin of the STM32F103 chip.
The H-bridge driving module 5 comprises a switching tube Q1, a switching tube Q2, a switching tube Q3, a switching tube Q4, a diode D _1, a diode D _2, a diode D _3 and a diode D _4, in this embodiment, MOS tubes are adopted for the switching tube Q1, the switching tube Q2, the switching tube Q3 and the switching tube Q4, the diode D _1 is connected in parallel to two ends of the source and the drain of the switching tube Q2, the diode D _2 is connected in parallel to two ends of the source and the drain of the switching tube Q1, the diode D _3 is connected in parallel to two ends of the source and the drain of the switching tube Q4, the diode D _4 is connected in parallel to two ends of the source and the drain of the switching tube Q3, the switching tube Q1 and the switching tube Q3 form a half-bridge, the switching tube Q4 and the switching tube Q2 form a half-bridge, the anode of the diode D2 is connected to the control end of the switching tube Q2, the anode of the diode D6 is connected to the control end of the switching, the anode of the diode D1 is connected with the control end of the switch tube Q3, and the STM32F103 chip can control the work of the H-bridge driving module through the second signal driving unit and the third signal driving unit.
The output end of the H-bridge driving module 5 is connected with a primary coil of an ignition coil, a secondary coil of the ignition coil is connected with an ignition plug, and the ignition coil is a high-frequency boosting transformer and can boost the voltage of the storage battery to 8-10 KV according to requirements so as to be used for ignition of a point piston.
The utility model discloses a controllable interchange ignition system of energy's theory of operation as follows: the PWM signal output by the controller module controls the conduction and the disconnection of the control end of the BOOST module through the third signal driving unit to control the storage and the release of energy of the inductor so as to BOOST the voltage output by the storage battery, and the controller module outputs a pair of complementary PWM signals to respectively controlAnd the first signal driving unit and the second signal driving unit control the opposite angles of 4 switching tubes in the H-bridge driving module to be alternately conducted so as to convert the direct-current high voltage output by the BOOST boosting module into a square wave and input the square wave to a primary coil of an ignition coil, a secondary coil of the ignition coil further BOOSTs the voltage in the primary coil and then inputs the square wave to an ignition plug, and the ignition plug ignites the square wave. The utility model discloses in, the controller module can change the duty cycle and the frequency of the PWM signal of output, and then changes BOOST BOOST module or H bridge drive module's the time of switching on and closing, changes PWM's duty cycle (duty) among the BOOST drive circuit, just can change BOOST's output voltage because its voltage output formula is U ═ UinAnd (1-duty), when the controller module changes the on-off time of the BOOST module, the output voltage of the BOOST module can be further changed, so that the voltage applied to the primary coil is changed, the voltage of the secondary coil is changed, the current acting on the ignition plug is changed, and the controllable energy of ignition is realized. When the controller module changes the on-off time of the H-bridge driving module, the frequency of the alternating voltage acting on the primary coil can be changed, further the alternating frequency on the secondary coil is also changed, according to the condition that Q is I2Rt, the frequency change time is also changed, and the ignition energy is adjustable.
Further, the BOOST converter further comprises a voltage feedback module, as shown in fig. 2, an input end of the voltage feedback module is connected with an output end of the BOOST module, and an output end of the voltage feedback module is connected with the controller module. Specifically, the voltage feedback module includes resistance RV1, resistance RV2 and first operational amplifier U1, resistance RV2 one end ground connection, the other end is connected with resistance RV 1's one end, resistance RV 1's the other end is connected with the output of BOOST module, resistance RV1 and resistance RV2 constitute bleeder circuit, the one end that resistance RV1 and resistance RV2 are connected is connected with first operational amplifier's syntropy input, first operational amplifier U1's reverse input end is connected with the output, the output is connected with an ADC pin of STM32F103 chip, output voltage with the BOOST reduces to within 3.3V through the form of resistance partial pressure and can supply the singlechip to gather, carry an ADC acquisition pin of singlechip through the voltage isolator that constitutes by the operational amplifier after the partial pressure. The feedback closed-loop PID control method has the effects that the output of the BOOST is stable and free of fluctuation through feedback closed-loop PID control, and further the accuracy of calculated energy is guaranteed.
IN this embodiment, the current feedback module includes a current detection chip INA282 and a resistor 20, a REF1 pin and a REF2 pin of the current detection chip INA282 are grounded, a-IN pin of the current detection chip INA282 is connected to one output terminal of the H-bridge drive module, a + IN pin of the current detection chip INA282 is connected to one end of the primary coil, the resistor 20 is connected IN parallel between the-IN pin and the + IN pin of the current detection chip INA282, and an OUT pin of the current detection chip INA282 is connected to the controller module. The current feedback module is arranged to calculate energy by collecting current of the primary coil, and detect the maximum value of the current feedback module to ensure that the maximum value of the current feedback module does not exceed rated values of devices in the H-bridge module and the BOOST module, so that the amplitude limiting function is achieved.
Further, the ignition device also comprises an input module, wherein the input module is connected with the controller module, the input module can adjust the duty ratio of the PWM signal output by the controller module, and further adjust the energy of the ignition plug so as to be suitable for different ignition requirements, and the input module can be a key or a dial switch.
Further, the display module is connected with the controller module and used for displaying various parameters, for example, the duty ratio of the PWM signal output by the controller module, the voltage value output by the BOOST module, the pulse width driving time in the H-bridge driving module, and the like.
Furthermore, the H-bridge driving modules are provided with a plurality of groups, and each group of H-bridge driving modules is connected with one actuator module and can be used for igniting a plurality of ignition plugs.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. An energy-controllable alternating current ignition system, characterized by: the system comprises a power supply module, a controller module, a signal driving module, a BOOST module, an H-bridge driving module and an actuator module;
the input end of the BOOST module is connected with the power supply module, the output end of the BOOST module is connected with the input end of the H-bridge driving module, and the control end of the BOOST module is connected with the controller module through the signal driving module;
the control end of the H-bridge driving module is connected with the controller module through the signal driving module;
the actuator module comprises an ignition coil and an ignition plug, the ignition coil comprises a primary coil and a secondary coil, the primary coil is connected with the output end of the H-bridge driving module, and the secondary coil is connected with the ignition plug.
2. The energy controllable ac ignition system of claim 1, wherein: the BOOST control circuit further comprises a voltage feedback module, wherein the input end of the voltage feedback module is connected with the output end of the BOOST module, and the output end of the voltage feedback module is connected with the controller module.
3. An energy controllable ac ignition system as claimed in claim 1 or claim 2 wherein: the current feedback module is arranged between the output end of the H-bridge driving module and the primary side coil, and the output end of the current feedback module is connected with the controller module.
4. The energy controllable ac ignition system of claim 1, wherein: the power module includes a battery for supplying power and an auxiliary power module.
5. The energy controllable ac ignition system of claim 1, wherein: the controller module is connected with the input module and the output module.
6. The energy controllable ac ignition system of claim 1, wherein: the display module is connected with the controller module.
7. The energy controllable ac ignition system of claim 1, wherein: the signal driving module comprises a first signal driving unit, a second signal driving unit and a third signal driving unit;
the controller module is connected with the control end of the BOOST module through the third signal driving unit;
the controller module is connected with the control end of the H-bridge driving module through the first signal driving unit and the second signal driving unit.
8. The energy controllable ac ignition system of claim 1, wherein: the H-bridge driving modules are provided with a plurality of groups, and each group of H-bridge driving modules is connected with one actuator module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270923.XU CN211524983U (en) | 2019-12-17 | 2019-12-17 | Energy-controllable alternating-current ignition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922270923.XU CN211524983U (en) | 2019-12-17 | 2019-12-17 | Energy-controllable alternating-current ignition system |
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| CN211524983U true CN211524983U (en) | 2020-09-18 |
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| CN201922270923.XU Expired - Fee Related CN211524983U (en) | 2019-12-17 | 2019-12-17 | Energy-controllable alternating-current ignition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128798A (en) * | 2020-09-27 | 2020-12-25 | 上海交通大学 | Ignition device with controllable energy, pulse width and frequency |
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2019
- 2019-12-17 CN CN201922270923.XU patent/CN211524983U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128798A (en) * | 2020-09-27 | 2020-12-25 | 上海交通大学 | Ignition device with controllable energy, pulse width and frequency |
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Granted publication date: 20200918 Termination date: 20211217 |
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