Gas generator frequent starting system without starting motor and implementation method

Abstract

The invention discloses a gas generator frequent starting system without a starting motor and an implementation method, and belongs to the technical field of generator control. The gas generator frequent starting system comprises a charging and discharging circuit, a charging control circuit and a discharging control circuit; the storage battery is connected with an inverter and a plurality of super capacitors through a normally open contact of the relay, each super capacitor is connected with a coil of a solid-state relay, the storage battery is further connected with a rectification voltage stabilizer, the inverter and the rectification voltage stabilizer are connected with a coil of a gas generator, the coil of the gas generator is further connected with a coil KMC-0 of an 8 # relay, and the coil KMC-0 of the 8 # relay is connected with the storage battery. A starting mode of directly driving a generator coil is adopted, an external starting motor is not needed, and therefore the problems that a conventional starter slips, cannot be separated and is abraded are solved.

Description

Technical Field

[0001] The present invention is a frequent start-up system and implementation method for a gas generator without a starting motor, belonging to the technical field of generator control. Background Art

[0002] A gas generator belongs to a type of internal combustion engine. The process of an internal combustion engine starting from a stopped state to running is called starting. Starting an internal combustion engine requires providing necessary starting energy to drive the crankshaft to rotate and drive the piston to move, thereby changing from a stopped state to a started state. In the early days, internal combustion engines used manual methods, such as hand cranking and foot pedaling, which were time-consuming and laborious. With the development of the times, they have gradually been replaced by electric starting. An electric starting system includes components such as a starter, a battery, and a starting switch. When the starting switch is activated, the battery supplies power to the starting motor, which in turn drives the crankshaft to rotate. The electric starting system of an internal combustion engine mainly includes the following key parts: power supply, electromagnetic mechanism, gear transmission, and overrunning clutch: Power Supply: The power supply of the electric starting system is usually provided by a battery. The battery supplies electrical energy to drive the starter to work. Electromagnetic Mechanism: When the power is turned on, the coil in the electromagnetic mechanism generates an electromagnetic force, causing the iron core in the electromagnet to adsorb to the gear on the starting motor. This process makes the drive gear of the starting motor mesh with the ring gear of the engine flywheel, thereby driving the crankshaft to rotate. Gear Transmission: The gear on the starter meshes with the ring gear of the engine flywheel by the force of the electromagnet and drives the crankshaft to rotate through a transmission mechanism. This process converts the electrical energy of the battery into mechanical energy to start the engine. Overrunning Clutch: Before the engine starts, the starter gear meshes with the engine through the overrunning clutch. After the engine starts, the overrunning clutch disengages the starting motor to avoid continuous rotation and power consumption, and also prevents the high speed of the engine from damaging the starting motor.

[0003] Gas generators have large power and volume, and their starting inertia is large. A high-power electric starting system is required to meet the working requirements. Since power generation and electrification are reversible processes, on small-power and low-voltage devices, a power generation and electrification integrated machine has been realized, and an external electric starting mechanism can be dispensed with, that is, using the machine for electric starting and then generating electricity by the machine itself. However, its application range is limited to small-power and low-voltage power generation devices and cannot be applied to high-power gas generators for the following reasons: The starting power supply is generally a lead-acid battery with a DC voltage of 12V. The voltage of the gas generator is AC 220V or 380V. The low-voltage AC voltage after the DC 12V passes through the inverter circuit cannot start the stator coil of the gas generator with a voltage of several hundred volts. If the low-voltage AC voltage is increased through a transformer, due to the large internal resistance of the transformer coil, it cannot provide the large current required for the start of the gas generator. Theoretically, connecting a dozen or dozens of lead-acid batteries in series can solve the above problems. However, on the one hand, the cost of the batteries increases, and the volume and weight may increase to be even larger than the generator itself, which cannot meet the mobility requirements of the generator. On the other hand, during the charging and discharging process of the series-connected batteries, if one battery has a problem, it will lead to a decline in the overall battery performance, resulting in a reduction in the reliability of the electric start.

[0004] The existing starting technology for gas generators uses an external starting motor. When the start button is closed, the lead-acid battery is used as the starting power supply to drive the starting motor to rotate. At the same time, the electromagnetic mechanism makes the gear of the starting motor in rotation mesh with the gear ring of the engine flywheel, driving the crankshaft to rotate. After the gas generator starts, the start button is released, the starting motor stops rotating, and at the same time, the electromagnetic mechanism releases, and the gear of the starting motor disengages from the gear ring of the engine flywheel.

[0005] The starting mechanism of the external starting motor method is an independent system, and its mechanical structure is complex, and problems often occur during use: The starting current is very large. Depending on the power, the starting current is generally several hundred to thousands of amperes. The starting motor is a brush motor. Under the condition of large current, the carbon brushes and the commutator are easily ablated and damaged. As time goes by, due to the iron core of the electromagnetic machine heating up, the magnetic resistance becomes larger, resulting in a smaller electromagnetic attraction force. The meshing degree between the gear of the starting motor and the gear ring of the engine flywheel is not good, resulting in gear wear and slippage. The overrunning clutch is prone to problems such as slippage and incomplete separation. When it slips, the starting motor idles and cannot transmit power to the engine; when the separation is incomplete, the starting motor will be damaged and burned by the high-speed rotating engine. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a frequent starting system and implementation method for a gas generator without a starting motor to address the above deficiencies. By adopting a starting method of directly driving the generator coil, there is no need for an external starting motor, thus solving the problems of slippage, non-disengagement, and wear of the conventional starter. A multi-group supercapacitor and a 12V lead-acid battery are used, and a parallel charging and series starting scheme is adopted to increase the voltage and amplify the power. At the same time, to avoid overcurrent in the lead-acid battery, the voltage of the currently parallel supercapacitors is monitored, and the supercapacitors are connected in parallel one by one after being fully charged.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: A frequent starting system for a gas generator without a starting motor, comprising a charge-discharge circuit, a charging control circuit and a discharging control circuit. The charge-discharge circuit includes a storage battery. The storage battery is connected with an inverter and a plurality of supercapacitors through normally open contacts of a relay. Each supercapacitor is connected with a coil of a solid-state relay. The storage battery is also connected with a rectifier voltage regulator. The inverter and the rectifier voltage regulator are connected with a coil of the gas generator. The coil of the gas generator is also connected with a coil KMC-0 of an 8# relay. The charge-discharge circuit is used for charging the supercapacitors by the storage battery or discharging the supercapacitors. The charging control circuit is used for controlling the charging of the supercapacitors by the storage battery in the charge-discharge circuit. The discharging control circuit is used for controlling the starting of the gas generator by discharging the supercapacitors.

[0008] Further, the positive electrode of the storage battery is connected to one end of the normally open contact KM1-1 of the 1# relay, one end of the normally open contact KM2-1 of the 2# relay, one end of the normally open contact KM3-1 of the 3# relay, one end of the normally open contact KM4-1 of the 4# relay, and one end of the normally open contact KM5-1 of the 5# relay. The other end of the normally open contact KM1-1 of the 1# relay is connected to one end of the normally open contact KM0-1 of the 0# relay, the positive electrode of the supercapacitor C1, and one end of the coil SSR1-0 of the 1# solid-state relay. The other end of the normally open contact KM0-1 of the 0# relay is connected to one end of the inverter. The other end of the coil SSR1-0 of the 1# solid-state relay is connected to the negative electrode of the supercapacitor C1, one end of the normally open contact KM0-2 of the 0# relay, and one end of the normally open contact KM1-2 of the 1# relay. The other end of the normally open contact KM1-2 of the 1# relay is connected to the negative electrode of the storage battery. The other end of the normally open contact KM2-1 of the 2# relay is connected to the other end of the normally open contact KM0-2 of the 0# relay, the positive electrode of the supercapacitor C2, and one end of the coil SSR2-0 of the 2# solid-state relay. The other end of the coil SSR2-0 of the 2# solid-state relay is connected to the negative electrode of the supercapacitor C2, one end of the normally open contact KM0-3 of the 0# relay, and one end of the normally open contact KM2-2 of the 2# relay. The other end of the normally open contact KM2-2 of the 2# relay is connected to the negative electrode of the storage battery. The other end of the normally open contact KM3-1 of the 3# relay is connected to the other end of the normally open contact KM0-3 of the 0# relay, the positive electrode of the supercapacitor C3, and one end of the coil SSR3-0 of the 3# solid-state relay. The other end of the coil SSR3-0 of the 3# solid-state relay is connected to the negative electrode of the supercapacitor C3, one end of the normally open contact KM0-4 of the 0# relay, and one end of the normally open contact KM3-2 of the 3# relay. The other end of the normally open contact KM3-2 of the 3# relay is connected to the negative electrode of the storage battery. The other end of the normally open contact KM4-1 of the 4# relay is connected to the other end of the normally open contact KM0-4 of the 0# relay, the positive electrode of the supercapacitor C4, and one end of the coil SSR4-0 of the 4# solid-state relay. The other end of the coil SSR4-0 of the 4# solid-state relay is connected to the negative electrode of the supercapacitor C4, one end of the normally open contact KM0-5 of the 0# relay, and one end of the normally open contact KM4-2 of the 4# relay. The other end of the normally open contact KM4-2 of the 4# relay is connected to the negative electrode of the storage battery. The other end of the normally open contact KM5-1 of the 5# relay is connected to the other end of the normally open contact KM0-5 of the 0# relay, the positive electrode of the supercapacitor C5, and one end of the coil SSR5-0 of the 5# solid-state relay. The other end of the coil SSR5-0 of the 5# solid-state relay is connected to the other end of the inverter, the negative electrode of the supercapacitor C5, and one end of the normally open contact KM5-2 of the 5# relay. The other end of the normally open contact KM5-2 of the 5# relay is connected to the negative electrode of the storage battery.

[0009] Further, the charging control circuit includes a stop button STOP. One end of the stop button STOP is connected to the positive electrode of the storage battery, and the other end of the stop button STOP is connected to one end of the normally closed contact KM0-10 of the 0# relay. The other end of the normally closed contact KM0-10 of the 0# relay is connected to one end of the normally closed contact KMB-2 of the 7# relay. The other end of the normally closed contact KMB-2 of the 7# relay is connected to one end of the start button START and one end of the normally open contact KMA-1 of the 6# relay. The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KMA-0 of the 6# relay, and the other end of the coil KMA-0 of the 6# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KM1-0 of the 1# relay, and the other end of the coil KM1-0 of the 1# relay is grounded.

[0010] Further, the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR1-1 of the 1# solid-state relay. The other end of the normally open contact SSR1-1 of the 1# solid-state relay is connected to one end of the coil KM2-0 of the 2# relay, and the other end of the coil KM2-0 of the 2# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR2-1 of the 2# solid-state relay. The other end of the normally open contact SSR2-1 of the 2# solid-state relay is connected to one end of the coil KM3-0 of the 3# relay, and the other end of the coil KM3-0 of the 3# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR3-1 of the 3# solid-state relay. The other end of the normally open contact SSR3-1 of the 3# solid-state relay is connected to one end of the coil KM4-0 of the 4# relay, and the other end of the coil KM4-0 of the 4# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR4-1 of the 4# solid-state relay. The other end of the normally open contact SSR4-1 of the 4# solid-state relay is connected to one end of the coil KM5-0 of the 5# relay, and the other end of the coil KM5-0 of the 5# relay is grounded.

[0011] Further, the discharge control circuit includes the normally closed contact KMC-1 of the 8# relay. One end of the normally closed contact KMC-1 of the 8# relay is connected to the positive pole of the storage battery, and the other end of the normally closed contact KMC-1 of the 8# relay is connected to one end of the normally open contact SSR5-1 of the 5# solid-state relay and one end of the normally open contact KMB-1 of the 7# relay. The other end of the normally open contact SSR5-1 of the 5# solid-state relay and the other end of the normally open contact KMB-1 of the 7# relay are connected to one end of the normally closed contact KMA-2 of the 6# relay and one end of the coil KMB-0 of the 7# relay. The other end of the coil KMB-0 of the 7# relay is grounded. The other end of the normally closed contact KMA-2 of the 6# relay is connected to one end of the coil KM0-0 of the 0# relay, and the other end of the coil KM0-0 of the 0# relay is grounded.

[0012] A method for realizing a frequent starting system of a gas generator without a starting motor includes the following steps: Step 1, charge the supercapacitor. Adopt the method of charging one by one, monitor the terminal voltage of a single supercapacitor. When the terminal voltage of the supercapacitor reaches the rated value, switch to charge the next supercapacitor; Step 2, discharge the supercapacitor to start the gas generator; Step 3, start the gas generator and charge the storage battery.

[0013] Further, Step 1 includes the following steps: When the gas generator is in the stopped state, press the start button START. The current flows out from the positive pole of the storage battery, passes through the stop button STOP, the normally closed contact KM0-10 of the 0# relay, the normally closed contact KMB-2 of the 7# relay, and the start button START and flows into the coil KMA-0 of the 6# relay. The coil KMA-0 of the 6# relay is energized and attracted. The normally open contact KMA-1 of the 6# relay is attracted to form a relay self-holding circuit. Release the start button START, and the coil KMA-0 of the 6# relay continues to be energized and attracted through the normally open contact KMA-1 of the 6# relay, and the charge control circuit starts to work; The coil KM1-0 of the 1# relay is energized and attracted in the same current loop at the same time. The normally open contacts KM1-1 and KM1-2 of the 1# relay are closed at the same time. The positive pole of the supercapacitor C1 is short-circuited with the positive pole of the storage battery through the normally open contact KM1-1 of the 1# relay, and the negative pole of the supercapacitor C1 is short-circuited with the negative pole of the storage battery through the normally open contact KM1-2 of the 1# relay. The storage battery charges the supercapacitor C1.

[0014] Further, Step 1 also includes the following steps: Let the voltage of the storage battery be Vu and the internal resistance be R, and the voltage of the supercapacitor C1 be Vt and the capacitance value be C. According to the capacitor charging formula Vt = Vu * [1 - exp(-t / RC)], at the moment when the normally open contacts KM1-1 and KM1-2 of the 1# relay are closed, the voltage Vt across the supercapacitor C1 cannot change suddenly. Vt is a process that gradually increases with time. The coil SSR1-0 of the 1# solid-state relay does not pull in during the charging process of the supercapacitor C1 because Vt < Vu. After a time t = RC, the supercapacitor C1 is fully charged. When Vt is equal to Vu, the coil SSR1-0 of the 1# solid-state relay pulls in, and the normally open contact SSR1-1 of the 1# solid-state relay closes.

[0015] Further, the step 2 includes the following steps: When the last supercapacitor C5 is fully charged, the coil SSR5-0 of the 5# solid-state relay pulls in, and the normally open contact SSR5-1 of the 5# solid-state relay closes. The current flows out from the positive pole of the storage battery, passes through the normally closed contact KMC-1 of the 8# relay and the normally open contact SSR5-1 of the 5# solid-state relay, and the coil KMB-0 of the 7# relay is energized and pulls in. The normally open contact KMB-1 of the 7# relay pulls in to form a relay self-holding circuit, and the discharge control circuit starts to work. At the same time, the normally closed contact KMB-2 of the 7# relay disconnects, and the charging control circuit self-holds and powers off and releases. The normally open contacts KM1-1 and KM1-2 of the 1# relay, the normally open contacts KM2-1 and KM2-2 of the 2# relay, the normally open contacts KM3-1 and KM3-2 of the 3# relay, the normally open contacts KM4-1 and KM4-2 of the 4# relay, the normally open contacts KM5-1 and KM5-2 of the 5# relay are all disconnected, and all the supercapacitors are disconnected from the charging circuit and enter the isolation state; The normally closed contact KMA-2 of the 6# relay closes, the coil KM0-0 of the 0# relay is energized and pulls in, and the normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, and KM0-5 of the 0# relay close. All the supercapacitors are connected end to end to form a series-connected supercapacitor combination circuit, and the voltage and power are increased.

[0016] Further, the step 3 includes the following steps: The coil KMC-0 of the 8# relay is connected in parallel across the single-phase live wire and the neutral wire. When the gas generator fails to start properly, the voltage across the coil KMC-0 of the 8# relay is lower than the rated voltage, and the coil KMC-0 of the 8# relay does not pull in. When the gas generator starts properly, the voltage across the coil KMC-0 of the 8# relay is about 220V, the coil KMC-0 of the 8# relay pulls in, its normally closed contact KMC-1 of the 8# relay opens, the discharge control circuit stops working, and the normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, and KM0-5 of the 0# relay all open. All supercapacitors are disconnected from the discharge circuit and enter the isolation state to prevent the inverter from reverse charging the supercapacitors and damaging them.

[0017] The present invention adopts the above technical solutions. Compared with the prior art, it has the following technical effects: A 12V lead-acid battery and supercapacitors are combined to convert low-voltage and low-power DC electrical energy into high-voltage and high-power electrical energy. The DC is converted into AC by an inverter to drive the coil of the gas generator to generate an alternating magnetic field, driving the rotor and crankshaft of the gas generator to rotate and start. After the gas generator starts, the starting circuit is automatically disconnected and switched to the charging state to charge the lead-acid battery and prepare for the next start.

[0018] Adopting the starting method of directly driving the generator coil, no external starting motor is required, so the problems of conventional starter slipping, failure to disengage, and wear are solved.

[0019] Adopting multiple groups of supercapacitors and a 12V lead-acid battery, the charging is carried out in parallel and the starting is carried out in series. The voltage is increased and the power is amplified. At the same time, to avoid overcurrent of the lead-acid battery, the voltage of the currently parallel supercapacitors is monitored, and the supercapacitors are connected in parallel one by one after being fully charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 It is the circuit connection diagram of the gas generator frequent start system in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiment, as Figure 1As shown in the figure, a frequent start-up system for a gas generator without a starting motor includes a charge and discharge circuit, a charging control circuit, and a discharge control circuit. The charge and discharge circuit includes a storage battery, which is connected to a rectifier voltage regulator. The positive electrode of the storage battery is connected to one end of the normally open contact KM1-1 of the 1# relay, one end of the normally open contact KM2-1 of the 2# relay, one end of the normally open contact KM3-1 of the 3# relay, one end of the normally open contact KM4-1 of the 4# relay, and one end of the normally open contact KM5-1 of the 5# relay. The other end of the normally open contact KM1-1 of the 1# relay is connected to one end of the normally open contact KM0-1 of the 0# relay, the positive electrode of the supercapacitor C1, and one end of the coil SSR1-0 of the 1# solid-state relay. The other end of the normally open contact KM0-1 of the 0# relay is connected to one end of the inverter. The other end of the coil SSR1-0 of the 1# solid-state relay is connected to the negative electrode of the supercapacitor C1, one end of the normally open contact KM0-2 of the 0# relay, and one end of the normally open contact KM1-2 of the 1# relay. The other end of the normally open contact KM1-2 of the 1# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM2-1 of the 2# relay is connected to the other end of the normally open contact KM0-2 of the 0# relay, the positive electrode of the supercapacitor C2, and one end of the coil SSR2-0 of the 2# solid-state relay. The other end of the coil SSR2-0 of the 2# solid-state relay is connected to the negative electrode of the supercapacitor C2, one end of the normally open contact KM0-3 of the 0# relay, and one end of the normally open contact KM2-2 of the 2# relay. The other end of the normally open contact KM2-2 of the 2# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM3-1 of the 3# relay is connected to the other end of the normally open contact KM0-3 of the 0# relay, the positive electrode of the supercapacitor C3, and one end of the coil SSR3-0 of the 3# solid-state relay. The other end of the coil SSR3-0 of the 3# solid-state relay is connected to the negative electrode of the supercapacitor C3, one end of the normally open contact KM0-4 of the 0# relay, and one end of the normally open contact KM3-2 of the 3# relay. The other end of the normally open contact KM3-2 of the 3# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM4-1 of the 4# relay is connected to the other end of the normally open contact KM0-4 of the 0# relay, the positive electrode of the supercapacitor C4, and one end of the coil SSR4-0 of the 4# solid-state relay. The other end of the coil SSR4-0 of the 4# solid-state relay is connected to the negative electrode of the supercapacitor C4, one end of the normally open contact KM0-5 of the 0# relay, and one end of the normally open contact KM4-2 of the 4# relay. The other end of the normally open contact KM4-2 of the 4# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM5-1 of the 5# relay is connected to the other end of the normally open contact KM0-5 of the 0# relay, the positive electrode of the supercapacitor C5, and one end of the coil SSR5-0 of the 5# solid-state relay. The other end of the coil SSR5-0 of the 5# solid-state relay is connected to the other end of the inverter, the negative electrode of the supercapacitor C5, and one end of the normally open contact KM5-2 of the 5# relay. The other end of the normally open contact KM5-2 of the 5# relay is connected to the negative electrode of the storage battery.

[0023] The inverter and the rectifier voltage regulator are connected to a generator coil, and the generator coil is also connected to the coil KMC-0 of the 8# relay.

[0024] The charging control circuit includes a stop button STOP. One end of the stop button STOP is connected to the positive pole of the storage battery, and the other end of the stop button STOP is connected to one end of the normally closed contact KM0-10 of the 0# relay. The other end of the normally closed contact KM0-10 of the 0# relay is connected to one end of the normally closed contact KMB-2 of the 7# relay. The other end of the normally closed contact KMB-2 of the 7# relay is connected to one end of the start button START and one end of the normally open contact KMA-1 of the 6# relay. The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KMA-0 of the 6# relay, and the other end of the coil KMA-0 of the 6# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KM1-0 of the 1# relay, and the other end of the coil KM1-0 of the 1# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR1-1 of the 1# solid-state relay, and the other end of the normally open contact SSR1-1 of the 1# solid-state relay is connected to one end of the coil KM2-0 of the 2# relay, and the other end of the coil KM2-0 of the 2# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR2-1 of the 2# solid-state relay, and the other end of the normally open contact SSR2-1 of the 2# solid-state relay is connected to one end of the coil KM3-0 of the 3# relay, and the other end of the coil KM3-0 of the 3# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR3-1 of the 3# solid-state relay, and the other end of the normally open contact SSR3-1 of the 3# solid-state relay is connected to one end of the coil KM4-0 of the 4# relay, and the other end of the coil KM4-0 of the 4# relay is grounded; the other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR4-1 of the 4# solid-state relay, and the other end of the normally open contact SSR4-1 of the 4# solid-state relay is connected to one end of the coil KM5-0 of the 5# relay, and the other end of the coil KM5-0 of the 5# relay is grounded.

[0025] The discharge control circuit includes the normally closed contact KMC-1 of the 8# relay. One end of the normally closed contact KMC-1 of the 8# relay is connected to the positive pole of the storage battery, and the other end of the normally closed contact KMC-1 of the 8# relay is connected to one end of the normally open contact SSR5-1 of the 5# solid-state relay and one end of the normally open contact KMB-1 of the 7# relay. The other end of the normally open contact SSR5-1 of the 5# solid-state relay and the other end of the normally open contact KMB-1 of the 7# relay are connected to one end of the normally closed contact KMA-2 of the 6# relay and one end of the coil KMB-0 of the 7# relay. The other end of the coil KMB-0 of the 7# relay is grounded. The other end of the normally closed contact KMA-2 of the 6# relay is connected to one end of the coil KM0-0 of the 0# relay, and the other end of the coil KM0-0 of the 0# relay is grounded.

[0026] A method for realizing a frequent starting system of a gas generator without a starting motor includes the following steps: Step 1, charging the supercapacitor; To improve the starting power, it is first necessary to charge the supercapacitor. To avoid overcurrent of the storage battery and excessive instantaneous voltage drop caused by simultaneously connecting multiple supercapacitors, an individual charging method is adopted. Monitor the terminal voltage of a single supercapacitor. When the terminal voltage of the supercapacitor reaches the rated value, switch to charging the next supercapacitor.

[0027] When the gas generator is in the stopped state, press the start button START. The current flows out from the positive pole of the storage battery, passes through the stop button STOP, the normally closed contact KM0-10 of the 0# relay, the normally closed contact KMB-2 of the 7# relay, and the start button START, and then flows into the coil KMA-0 of the 6# relay. The coil KMA-0 of the 6# relay is energized and attracted. The normally open contact KMA-1 of the 6# relay is attracted to form a relay self-holding circuit. Release the start button START, and the coil KMA-0 of the 6# relay continues to be energized and attracted through the normally open contact KMA-1 of the 6# relay, and the charging control circuit starts to work.

[0028] The coil KM1-0 of the 1# relay is simultaneously energized and attracted in the same current loop. The normally open contacts KM1-1 and KM1-2 of the 1# relay are simultaneously closed. The positive pole of the supercapacitor C1 is short-circuited with the positive pole of the storage battery through the normally open contact KM1-1 of the 1# relay, and the negative pole of the supercapacitor C1 is short-circuited with the negative pole of the storage battery through the normally open contact KM1-2 of the 1# relay. The storage battery charges the supercapacitor C1.

[0029] Let the voltage of the storage battery be Vu and its internal resistance be R, and the voltage of the supercapacitor C1 be Vt and its capacitance value be C. According to the capacitor charging formula Vt = Vu * [1 - exp(-t / RC)], at the moment when the normally open contacts KM1-1 and KM1-2 of the 1# relay are closed, the voltage Vt across the supercapacitor C1 cannot change suddenly. Vt is a process of gradually increasing with time. The coil SSR1-0 of the 1# solid-state relay does not attract during the charging process of the supercapacitor C1 because Vt < Vu. After a time t = RC, the supercapacitor C1 is fully charged. When Vt is equal to Vu, the coil SSR1-0 of the 1# solid-state relay attracts, and the normally open contact SSR1-1 of the 1# solid-state relay closes.

[0030] The coil KM2-0 of the 2# relay is powered on via the normally open contact SSR1-1 of the 1# solid-state relay. The normally open contacts KM2-1 and KM2-2 of the 2# relay close simultaneously. The positive electrode of the supercapacitor C2 is short-circuited with the positive electrode of the storage battery via the normally open contact KM2-1 of the 2# relay, and the negative electrode of the supercapacitor C2 is short-circuited with the negative electrode of the storage battery via the normally open contact KM2-2 of the 2# relay. The storage battery charges the supercapacitor C2. Similarly, the coil SSR2-0 of the 2# solid-state relay does not attract during the charging process of the supercapacitor C2 because Vt < Vu. After a time t = RC, the supercapacitor C2 is fully charged. When Vt is equal to Vu, the coil SSR2-0 of the 2# solid-state relay attracts, and the normally open contact SSR2-1 of the 2# solid-state relay closes.

[0031] By the same token, the same process cycles, and the supercapacitors C3, C4, and C5 are fully charged in turn.

[0032] Step 2, the supercapacitor discharges to start the gas generator. When the last supercapacitor C5 is fully charged, the coil SSR5-0 of the 5# solid-state relay is energized and the normally open contact SSR5-1 of the 5# solid-state relay closes. The current flows out from the positive pole of the battery, through the normally closed contact KMC-1 of the 8# relay and the normally open contact SSR5-1 of the 5# solid-state relay, and the coil KMB-0 of the 7# relay is energized and closes. The normally open contact KMB-1 of the 7# relay closes to form a relay self-holding circuit, and the discharge control circuit starts to work. At the same time, the normally closed contact KMB-2 of the 7# relay opens, the charging control circuit self-holds and de-energizes and releases, and the normally open contacts KM1-1, KM1-2 of the 1# relay, the normally open contacts KM2-1, KM2-2 of the 2# relay, the normally open contacts KM3-1, KM3-2 of the 3# relay, the normally open contacts KM4-1, KM4-2 of the 4# relay, the normally open contacts KM5-1, KM5-2 of the 5# relay all open, and all supercapacitors are disconnected from the charging circuit and enter the isolation state.

[0033] Due to the self-holding and de-energizing release of the above charging control circuit, the normally closed contact KMA-2 of the 6# relay closes, and the coil KM0-0 of the 0# relay is energized and closes. The normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, KM0-5 of the 0# relay close, and all supercapacitors are connected end to end to form a series-connected supercapacitor combination circuit, and the voltage and power are increased.

[0034] The supercapacitor combination circuit converts direct current into three-phase alternating current through an inverter. When the three-phase current is introduced into the three-phase symmetrical windings of the stator of the permanent magnet synchronous motor, the magnetomotive force generated by the current synthesizes a rotating magnetomotive force with a constant amplitude. Since its amplitude is constant, the locus of this rotating magnetomotive force forms a circle, which is called a circular rotating magnetomotive force. The interaction between the rotating magnetomotive force generated by the stator and the magnetic field generated by the permanent magnets on the rotor drives the rotor to rotate. The crankshaft connected to the rotor rotates, and at the same time drives the valve train and ignition timing system to work, starting the gas generator to operate.

[0035] Furthermore, the rated speed of an internal combustion engine is usually 2000 to 3000 revolutions per minute, and it can be started at a starting speed of 600 revolutions per minute. Therefore, it is not necessary for the voltage of the supercapacitor combination to reach the rated voltage of several hundred volts of the gas generator. In the present invention, 5 supercapacitors are connected in series with a voltage of 60V. It has been verified that the starting speed can reach more than 600 revolutions per minute. In order to further improve the starting efficiency of the gas generator, the number of supercapacitors can also be increased to further increase the starting power and voltage.

[0036] Step 3: Start the gas generator and charge the battery. After the gas generator starts successfully, to prevent the inverter from reverse charging the supercapacitor and damaging it, the supercapacitor bank needs to be disconnected from the gas generator coil.

[0037] The normal output voltage of the gas generator is several hundred volts. Taking the star-connected 380V three-phase winding as an example, the coil KMC-0 of the 8# relay is connected in parallel between the single-phase live wire and the neutral wire. When the gas generator does not start normally, the voltage across the coil KMC-0 of the 8# relay is lower than the rated voltage, and the coil KMC-0 of the 8# relay does not pull in. When the gas generator starts normally, the voltage across the coil KMC-0 of the 8# relay is about 220V, the coil KMC-0 of the 8# relay pulls in, its normally closed contact KMC-1 of the 8# relay opens, the discharge control circuit stops working, and the normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, and KM0-5 of the 0# relay all open. All supercapacitors are disconnected from the discharge circuit and enter the isolation state.

[0038] After the gas generator starts normally, one of its phase windings passes through a rectifier voltage regulator to charge the lead-acid battery, replenishing the electrical energy consumed during the above startup. When the lead-acid battery is fully charged, the rectifier voltage regulator disconnects the charging circuit to prevent overcharging of the lead-acid battery.

[0039] The description of the present invention has been given for purposes of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A frequent starting system for a gas generator without a starting motor, characterized in that: It includes a charge-discharge circuit, a charge control circuit and a discharge control circuit. The charge-discharge circuit includes a storage battery. The storage battery is connected to an inverter and several supercapacitors through the normally open contacts of a relay. Each supercapacitor is connected to the coil of a solid-state relay. The storage battery is also connected to a rectifier voltage regulator. The inverter and the rectifier voltage regulator are connected to the coil of a gas generator. The coil of the gas generator is also connected to the coil KMC-0 of an 8# relay. The charge-discharge circuit is used for the storage battery to charge the supercapacitors or the supercapacitors to discharge. The charge control circuit is used for controlling the storage battery in the charge-discharge circuit to charge the supercapacitors. The discharge control circuit is used for controlling the supercapacitors to discharge to start the gas generator.

2. The frequent start-up system of a gas generator without a starting motor as described in claim 1, characterized in that: The positive electrode of the storage battery is connected to one end of the normally open contact KM1-1 of the 1# relay, one end of the normally open contact KM2-1 of the 2# relay, one end of the normally open contact KM3-1 of the 3# relay, one end of the normally open contact KM4-1 of the 4# relay, and one end of the normally open contact KM5-1 of the 5# relay. The other end of the normally open contact KM1-1 of the 1# relay is connected to one end of the normally open contact KM0-1 of the 0# relay, the positive electrode of the supercapacitor C1, and one end of the coil SSR1-0 of the 1# solid-state relay. The other end of the normally open contact KM0-1 of the 0# relay is connected to one end of the inverter. The other end of the coil SSR1-0 of the 1# solid-state relay is connected to the negative electrode of the supercapacitor C1, one end of the normally open contact KM0-2 of the 0# relay, and one end of the normally open contact KM1-2 of the 1# relay. The other end of the normally open contact KM1-2 of the 1# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM2-1 of the 2# relay is connected to the other end of the normally open contact KM0-2 of the 0# relay, the positive electrode of the supercapacitor C2, and one end of the coil SSR2-0 of the 2# solid-state relay. The other end of the coil SSR2-0 of the 2# solid-state relay is connected to the negative electrode of the supercapacitor C2, one end of the normally open contact KM0-3 of the 0# relay, and one end of the normally open contact KM2-2 of the 2# relay. The other end of the normally open contact KM2-2 of the 2# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM3-1 of the 3# relay is connected to the other end of the normally open contact KM0-3 of the 0# relay, the positive electrode of the supercapacitor C3, and one end of the coil SSR3-0 of the 3# solid-state relay. The other end of the coil SSR3-0 of the 3# solid-state relay is connected to the negative electrode of the supercapacitor C3, one end of the normally open contact KM0-4 of the 0# relay, and one end of the normally open contact KM3-2 of the 3# relay. The other end of the normally open contact KM3-2 of the 3# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM4-1 of the 4# relay is connected to the other end of the normally open contact KM0-4 of the 0# relay, the positive electrode of the supercapacitor C4, and one end of the coil SSR4-0 of the 4# solid-state relay. The other end of the coil SSR4-0 of the 4# solid-state relay is connected to the negative electrode of the supercapacitor C4, one end of the normally open contact KM0-5 of the 0# relay, and one end of the normally open contact KM4-2 of the 4# relay. The other end of the normally open contact KM4-2 of the 4# relay is connected to the negative electrode of the storage battery; the other end of the normally open contact KM5-1 of the 5# relay is connected to the other end of the normally open contact KM0-5 of the 0# relay, the positive electrode of the supercapacitor C5, and one end of the coil SSR5-0 of the 5# solid-state relay. The other end of the coil SSR5-0 of the 5# solid-state relay is connected to the other end of the inverter, the negative electrode of the supercapacitor C5, and one end of the normally open contact KM5-2 of the 5# relay. The other end of the normally open contact KM5-2 of the 5# relay is connected to the negative electrode of the storage battery.

3. A frequent starting system for a gas generator without a starting motor as described in claim 1, characterized in that: The charging control circuit includes a stop button STOP. One end of the stop button STOP is connected to the positive pole of the storage battery. The other end of the stop button STOP is connected to one end of the normally closed contact KM0-10 of the 0# relay. The other end of the normally closed contact KM0-10 of the 0# relay is connected to one end of the normally closed contact KMB-2 of the 7# relay. The other end of the normally closed contact KMB-2 of the 7# relay is connected to one end of the start button START and one end of the normally open contact KMA-1 of the 6# relay. The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KMA-0 of the 6# relay. The other end of the coil KMA-0 of the 6# relay is grounded; The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the coil KM1-0 of the 1# relay. The other end of the coil KM1-0 of the 1# relay is grounded.

4. A frequent starting system for a gas generator without a starting motor as described in claim 3, characterized in that: The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR1-1 of the 1# solid-state relay. The other end of the normally open contact SSR1-1 of the 1# solid-state relay is connected to one end of the coil KM2-0 of the 2# relay. The other end of the coil KM2-0 of the 2# relay is grounded; The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR2-1 of the 2# solid-state relay. The other end of the normally open contact SSR2-1 of the 2# solid-state relay is connected to one end of the coil KM3-0 of the 3# relay. The other end of the coil KM3-0 of the 3# relay is grounded; The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR3-1 of the 3# solid-state relay. The other end of the normally open contact SSR3-1 of the 3# solid-state relay is connected to one end of the coil KM4-0 of the 4# relay. The other end of the coil KM4-0 of the 4# relay is grounded; The other end of the start button START and the other end of the normally open contact KMA-1 of the 6# relay are connected to one end of the normally open contact SSR4-1 of the 4# solid-state relay. The other end of the normally open contact SSR4-1 of the 4# solid-state relay is connected to one end of the coil KM5-0 of the 5# relay. The other end of the coil KM5-0 of the 5# relay is grounded.

5. A frequent starting system for a gas generator without a starting motor according to claim 1, characterized in that: The discharge control circuit includes the normally closed contact KMC-1 of the 8# relay. One end of the normally closed contact KMC-1 of the 8# relay is connected to the positive pole of the storage battery, and the other end of the normally closed contact KMC-1 of the 8# relay is connected to one end of the normally open contact SSR5-1 of the 5# solid-state relay and one end of the normally open contact KMB-1 of the 7# relay. The other end of the normally open contact SSR5-1 of the 5# solid-state relay and the other end of the normally open contact KMB-1 of the 7# relay are connected to one end of the normally closed contact KMA-2 of the 6# relay and one end of the coil KMB-0 of the 7# relay. The other end of the coil KMB-0 of the 7# relay is grounded. The other end of the normally closed contact KMA-2 of the 6# relay is connected to one end of the coil KM0-0 of the 0# relay, and the other end of the coil KM0-0 of the 0# relay is grounded.

6. A method for implementing a frequent starting system of a gas generator without a starting motor, characterized in that: The implementation method is applied to a frequent start-up system of a gas generator without a starting motor as described in any one of claims 1-5, and includes the following steps: Step 1, charge the supercapacitor. Adopt the one-by-one charging method, monitor the terminal voltage of a single supercapacitor. When the terminal voltage of the supercapacitor reaches the rated value, switch to the next supercapacitor for charging; Step 2, discharge the supercapacitor to start the gas generator; Step 3, start the gas generator and charge the storage battery.

7. The implementation method of a frequent starting system for a gas generator without a starting motor as claimed in claim 6, characterized in that: The said Step 1 includes the following steps: When the gas generator is in the stopped state, press the start button START. The current flows out from the positive pole of the storage battery, passes through the stop button STOP, the normally closed contact KM0-10 of the 0# relay, the normally closed contact KMB-2 of the 7# relay, and the start button START and flows into the coil KMA-0 of the 6# relay. The coil KMA-0 of the 6# relay is energized and attracted. The normally open contact KMA-1 of the 6# relay is attracted to form a relay self-holding circuit. Release the start button START, and the coil KMA-0 of the 6# relay continues to be energized and attracted through the normally open contact KMA-1 of the 6# relay, and the charging control circuit starts to work; The coil KM1-0 of the 1# relay is energized and attracted in the same current loop at the same time. The normally open contacts KM1-1 and KM1-2 of the 1# relay are closed at the same time. The positive pole of the supercapacitor C1 is short-circuited with the positive pole of the storage battery through the normally open contact KM1-1 of the 1# relay, and the negative pole of the supercapacitor C1 is short-circuited with the negative pole of the storage battery through the normally open contact KM1-2 of the 1# relay. The storage battery charges the supercapacitor C1.

8. The implementation method of a frequent starting system for a gas generator without a starting motor according to claim 7, characterized in that: The said Step 1 further includes the following steps: Let the voltage of the storage battery be Vu and its internal resistance be R, and the voltage of the supercapacitor C1 be Vt and its capacitance value be C. According to the capacitor charging formula Vt = Vu * [1 - exp(-t / RC)], at the moment when the normally open contacts KM1-1 and KM1-2 of the 1# relay close, the voltage Vt across the supercapacitor C1 cannot change suddenly. Vt is a process that gradually increases with time. The coil SSR1-0 of the 1# solid-state relay does not attract during the charging process of the supercapacitor C1 because Vt < Vu. After a time t = RC, the supercapacitor C1 is fully charged. When Vt is equal to Vu, the coil SSR1-0 of the 1# solid-state relay attracts, and the normally open contact SSR1-1 of the 1# solid-state relay closes.

9. The implementation method of a frequent starting system for a gas generator without a starting motor as described in claim 6, characterized in that: Step 2 includes the following steps: When the last supercapacitor C5 is fully charged, the coil SSR5-0 of the 5# solid-state relay attracts, and the normally open contact SSR5-1 of the 5# solid-state relay closes. The current flows out from the positive pole of the storage battery, passes through the normally closed contact KMC-1 of the 8# relay and the normally open contact SSR5-1 of the 5# solid-state relay, and the coil KMB-0 of the 7# relay gets powered on and attracts. The normally open contact KMB-1 of the 7# relay attracts to form a relay self-holding circuit, and the discharge control circuit starts to work. At the same time, the normally closed contact KMB-2 of the 7# relay disconnects, and the charging control circuit self-holds and powers off and releases. The normally open contacts KM1-1 and KM1-2 of the 1# relay, the normally open contacts KM2-1 and KM2-2 of the 2# relay, the normally open contacts KM3-1 and KM3-2 of the 3# relay, the normally open contacts KM4-1 and KM4-2 of the 4# relay, the normally open contacts KM5-1 and KM5-2 of the 5# relay all disconnect, and all supercapacitors are disconnected from the charging circuit and enter the isolation state; The normally closed contact KMA-2 of the 6# relay closes, the coil KM0-0 of the 0# relay gets powered on and attracts, and the normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, and KM0-5 of the 0# relay close. All supercapacitors are connected end to end to form a series supercapacitor combination circuit, and the voltage and power are increased.

10. The implementation method of a frequent start-up system for a gas generator without a starting motor as described in claim 6, characterized in that: Step 3 includes the following steps: The coil KMC-0 of the 8# relay is connected in parallel across the single-phase live wire and the neutral wire. When the gas generator fails to start properly, the voltage across the coil KMC-0 of the 8# relay is lower than the rated voltage, and the coil KMC-0 of the 8# relay does not pull in. After the gas generator starts properly, the voltage across the coil KMC-0 of the 8# relay is about 220V, the coil KMC-0 of the 8# relay pulls in, its normally closed contact KMC-1 of the 8# relay opens, the discharge control circuit stops working, and the normally open contacts KM0-1, KM0-2, KM0-3, KM0-4, and KM0-5 of the 0# relay all open. All supercapacitors are disconnected from the discharge circuit and enter the isolation state to prevent the inverter from charging the supercapacitors reversely and damaging the supercapacitors.

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