Control method of a generator drive circuit capable of switching between charging and power generation modes

Abstract

The application relates to the technical field of charging generator driving circuits, in particular to a charging generator driving circuit and a control method thereof, which comprises a permanent magnet generator, a voltage regulating circuit and a detection chip arranged on the charging generator respectively, the voltage regulating circuit comprises a voltage collecting circuit and an input-output switching circuit, the input-output switching circuit is electrically connected with the permanent magnet generator, the voltage collecting circuit and a charging port of the charging generator respectively, the detection chip is electrically connected with the permanent magnet generator and the input-output switching circuit respectively, and the charging port of the charging generator is electrically connected with a charging device of an external device, so that the input end and the output end of the permanent magnet generator can be switched by detecting the voltage values of the charging port and the output port of the charging generator, the charging and power generation of the charging generator are realized, and the charging generator cannot be in the power generation state all the time, so that fuel can be saved.

Description

[0001] This case is a divisional application of the patent application with application number 202111662745.0, application date 2021-12-31, entitled "A Charging Generator Drive Circuit and Control Method Thereof". Technical Field

[0002] This invention relates to the field of charging generator drive circuit technology, and in particular to a charging generator drive circuit and its control method. Background Technology

[0003] The rechargeable generator is an important power source for the generator set. Its function is to provide power to all electrical equipment and charge the battery when the engine is running normally. Existing rechargeable generators are always in the generating state. If they are still in the generating state when the electrical equipment does not need the generator to provide power, this will not only cause excessive energy consumption, but also shorten the generator's lifespan. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a charging generator drive circuit and its control method, so that the charging generator will not be in the power generation state all the time, so as to save fuel.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted by the present invention is as follows:

[0006] A charging generator drive circuit includes a permanent magnet generator, a voltage regulation circuit, and a detection chip respectively disposed on the charging generator. The voltage regulation circuit includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the permanent magnet generator, the voltage acquisition circuit, and the charging port of the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device.

[0007] The second technical solution adopted in this invention is:

[0008] A control method for a charging generator drive circuit includes the following steps:

[0009] S1. Control the charging device of the peripheral device to charge the charging port of the charging generator.

[0010] S2. Collect the voltage value of the charging port of the charging generator and determine whether the collected voltage value of the charging port of the charging generator is higher than the first preset voltage value.

[0011] S3. If yes, then control the permanent magnet generator to switch the output state to the input state so that the charging generator can obtain the starting voltage.

[0012] S4. After the charging generator obtains the starting voltage, control the permanent magnet generator to rotate and start the gasoline engine, so that the charging generator starts to run.

[0013] S5. After the charging generator starts running, collect the voltage value at the output terminal of the charging generator and determine whether the collected voltage value at the output terminal of the charging generator is equal to the preset second voltage value.

[0014] S6. If yes, then control the permanent magnet generator to switch the input state to the output state of charging the peripheral charging device.

[0015] The beneficial effects of this invention are as follows:

[0016] By setting up a permanent magnet generator, a voltage regulation circuit, and a detection chip, the permanent magnet generator is electrically connected to the voltage regulation circuit, which includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the permanent magnet generator, the voltage acquisition circuit, and the charging port of the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device. This allows the switching between the input and output of the permanent magnet generator to be controlled by detecting the voltage values ​​at the charging port and output port of the charging generator, realizing the charging and power generation of the charging generator. This prevents the charging generator from being in a continuous power generation state, thereby saving fuel. Attached Figure Description

[0017] Figure 1 This is a module connection diagram of a charging generator drive circuit according to the present invention;

[0018] Figure 2 A connection block diagram of a voltage regulation circuit for a charging generator drive circuit according to the present invention;

[0019] Figure 3 A flowchart illustrating the steps of a control method for a charging generator drive circuit according to the present invention;

[0020] Label Explanation:

[0021] 1. Permanent magnet generator;

[0022] 2. Voltage regulation circuit; 201. Power supply voltage regulator circuit; 202. Voltage acquisition circuit; 203. Current acquisition circuit; 204. Input / output switching circuit; 205. Undervoltage and overcurrent protection circuit; 206. Protection relay;

[0023] 3. Throttle control module;

[0024] 4. Control the throttle valve motor;

[0025] 5. Three-phase rectifier bridge circuit. Detailed Implementation

[0026] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0027] Please refer to Figure 1 The present invention provides a technical solution:

[0028] A charging generator drive circuit includes a permanent magnet generator, a voltage regulation circuit, and a detection chip respectively disposed on the charging generator. The voltage regulation circuit includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the permanent magnet generator, the voltage acquisition circuit, and the charging port of the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device.

[0029] As can be seen from the above description, the beneficial effects of the present invention are as follows:

[0030] By setting up a permanent magnet generator, a voltage regulation circuit, and a detection chip, the permanent magnet generator is electrically connected to the voltage regulation circuit, which includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the permanent magnet generator, the voltage acquisition circuit, and the charging port of the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device. This allows the switching between the input and output of the permanent magnet generator to be controlled by detecting the voltage values ​​at the charging port and output port of the charging generator, realizing the charging and power generation of the charging generator. This prevents the charging generator from being in a continuous power generation state, thereby saving fuel.

[0031] Furthermore, it also includes a throttle control module and a throttle control motor, wherein the throttle control module is electrically connected to the throttle control motor, the voltage acquisition circuit, and the detection chip, respectively.

[0032] As described above, the throttle control module uses the voltage acquisition analog signal and current acquisition analog signal fed back by the voltage regulation circuit to control the throttle motor to adjust the intake air volume of the valve, and ultimately controls the gasoline engine speed to increase or decrease the output voltage or current of the charging generator.

[0033] Furthermore, the voltage regulation circuit also includes a power supply regulator circuit, which is electrically connected to the throttle control module and the input / output switching circuit, respectively.

[0034] As described above, a power supply regulator circuit is set up to provide the corresponding operating voltage to the throttle control module.

[0035] Furthermore, the voltage regulation circuit also includes a current acquisition circuit, which is electrically connected to the input / output switching circuit.

[0036] Furthermore, the voltage regulation circuit also includes an undervoltage and overcurrent protection circuit, which is electrically connected to the charging ports of the voltage acquisition circuit, the permanent magnet generator, and the charging generator, respectively.

[0037] As described above, by setting up an undervoltage and overcurrent protection circuit, the load output can be shut off when the generator (fuel) power is insufficient or the current exceeds the design requirements, thereby protecting the generator and charging equipment.

[0038] Furthermore, the voltage regulation circuit also includes a protection relay, and the input / output switching circuit is electrically connected to the charging port of the charging generator through the protection relay.

[0039] As described above, by setting up a protective relay, the main circuit power supply can be cut off when a protection signal is required, thus achieving the protection function.

[0040] Furthermore, it also includes a three-phase rectifier bridge circuit, which is electrically connected to the voltage regulation circuit and the permanent magnet generator respectively.

[0041] As described above, a three-phase rectifier bridge circuit is used to convert three-phase AC power into DC voltage.

[0042] Furthermore, the three-phase rectifier bridge circuit includes diodes D1, D2, D3, D4, D5, and D6. The anode of diode D1 is electrically connected to the permanent magnet generator and the cathode of diode D4, respectively. The anode of diode D2 is electrically connected to the permanent magnet generator and the cathode of diode D5, respectively. The anode of diode D3 is electrically connected to the permanent magnet generator and the cathode of diode D6, respectively. The cathode of diode D1 is electrically connected to the cathodes of diodes D2 and D3 and the voltage regulation circuit, respectively. The anode of diode D4 is electrically connected to the anodes of diodes D5 and D6 and the voltage regulation circuit, respectively.

[0043] Please refer to Figure 3 Another technical solution provided by the present invention:

[0044] A control method for a charging generator drive circuit includes the following steps:

[0045] S1. Control the charging device of the peripheral device to charge the charging port of the charging generator.

[0046] S2. Collect the voltage value of the charging port of the charging generator and determine whether the collected voltage value of the charging port of the charging generator is higher than the first preset voltage value.

[0047] S3. If yes, then control the permanent magnet generator to switch the output state to the input state so that the charging generator can obtain the starting voltage.

[0048] S4. After the charging generator obtains the starting voltage, control the permanent magnet generator to rotate and start the gasoline engine, so that the charging generator starts to run.

[0049] S5. After the charging generator starts running, collect the voltage value at the output terminal of the charging generator and determine whether the collected voltage value at the output terminal of the charging generator is equal to the preset second voltage value.

[0050] S6. If yes, then control the permanent magnet generator to switch the input state to the output state of charging the peripheral charging device.

[0051] As can be seen from the above description, the beneficial effects of the present invention are as follows:

[0052] This solution collects the voltage value of the charging port of the generator and determines whether the collected voltage value is higher than a first preset voltage value. If the collected voltage value is higher than the first preset voltage value, the permanent magnet generator is controlled to switch its output to its input, allowing the generator to obtain a starting voltage. After the generator obtains the starting voltage, the permanent magnet generator is controlled to start the gasoline engine, causing the generator to start running. After the generator starts running, the voltage value of the generator's output is collected and determined whether the collected voltage value is equal to a preset second voltage value. If the collected voltage value is equal to the preset second voltage value, the permanent magnet generator is controlled to switch its input to its output to charge the external charging device. This achieves both charging and power generation of the generator, preventing it from constantly generating power and thus saving fuel.

[0053] Furthermore, the second voltage value is greater than or equal to the charging voltage value of the peripheral charging device.

[0054] Please refer to Figure 1 and Figure 2 Embodiment 1 of the present invention is as follows:

[0055] Please refer to Figure 1 and Figure 2A charging generator drive circuit includes a permanent magnet generator 1, a voltage regulation circuit 2, and a detection chip respectively disposed on the charging generator. The voltage regulation circuit 2 includes a voltage acquisition circuit 202 and an input / output switching circuit 204. The input / output switching circuit 204 is electrically connected to the permanent magnet generator 1, the voltage acquisition circuit 202, and the charging port of the charging generator. The detection chip is electrically connected to the permanent magnet generator 1 and the input / output switching circuit 204. The charging port of the charging generator is electrically connected to an external charging device.

[0056] The input / output switching circuit 204 is a conventional circuit that can switch between input and output.

[0057] Please refer to Figure 1 It also includes a throttle control module 3 and a throttle control motor 4, wherein the throttle control module 3 is electrically connected to the throttle control motor 4, the voltage acquisition circuit 202 and the detection chip respectively.

[0058] Please refer to Figure 2 The voltage regulation circuit 2 further includes a power supply regulator circuit 201, which is electrically connected to the throttle control module 3 and the input / output switching circuit 204.

[0059] Please refer to Figure 2 The voltage regulation circuit 2 further includes a current acquisition circuit 203, which is electrically connected to the input / output switching circuit 204.

[0060] Please refer to Figure 2 The voltage regulation circuit 2 further includes an undervoltage and overcurrent protection circuit 205, which is electrically connected to the voltage acquisition circuit 202, the permanent magnet generator 1, and the charging port of the charging generator.

[0061] The throttle control module 3 includes a main control chip of model N76E003AT20 and a driver chip of model ULN2003, and the main control chip and the driver chip are electrically connected.

[0062] The throttle control motor 4 is model 28BYJ-48.

[0063] The power supply regulator circuit 201 includes a power supply regulator chip of model L7805.

[0064] The voltage acquisition circuit 202 includes a voltage acquisition chip of model LM393, and the current acquisition circuit 203 includes a current acquisition chip of model LM393.

[0065] The undervoltage and overcurrent protection circuit 205 includes an undervoltage and overcurrent chip of model LM393.

[0066] Please refer to Figure 2 The voltage regulation circuit 2 further includes a protection relay 206, and the input / output switching circuit 204 is electrically connected to the charging port of the charging generator through the protection relay 206. The protection relay 206 is a KH180 model.

[0067] Please refer to Figure 1 It also includes a three-phase rectifier bridge circuit 5, which is electrically connected to the voltage regulation circuit 2 and the permanent magnet generator 1 respectively.

[0068] Please refer to Figure 1 The three-phase rectifier bridge circuit 5 includes diodes D1 (model 10A10), D2 (model 10A10), D3 (model 10A10), D4 (model 10A10), D5 (model 10A10), and D6 (model 10A10). The anode of diode D1 is electrically connected to the cathode of permanent magnet generator 1 and diode D4, respectively. The anode of diode D2 is electrically connected to the cathode of permanent magnet generator 1 and diode D5, respectively. The anode of diode D3 is electrically connected to the cathode of permanent magnet generator 1 and diode D6, respectively. The cathode of diode D1 is electrically connected to the cathode of diode D2, the cathode of diode D3, and voltage regulation circuit 2, respectively. The anode of diode D4 is electrically connected to the anode of diode D5, the anode of diode D6, and voltage regulation circuit 2, respectively.

[0069] The three-phase rectifier bridge circuit 5 is connected through six rectifier diodes. According to the characteristics of the diodes, when the positive voltage is higher than the negative voltage, the diode conducts; conversely, when the positive voltage is lower than the negative voltage, the diode is cut off. The characteristic of this circuit is that at any time, the rectified current flows out through the diode connected to the phase with the highest voltage in the three-phase rectifier bridge circuit 5, and then through the load R to the diode of the phase with the lowest potential to the power supply.

[0070] Please refer to Figure 3 Embodiment two of the present invention is as follows:

[0071] A control method for a charging generator drive circuit includes the following steps:

[0072] S1. Control the charging device of the peripheral device to charge the charging port of the charging generator.

[0073] S2. Collect the voltage value of the charging port of the charging generator and determine whether the collected voltage value of the charging port of the charging generator is higher than the first preset voltage value.

[0074] S3. If yes, then control the permanent magnet generator 1 to switch the output state to the input state so that the charging generator can obtain the starting voltage.

[0075] S4. After the charging generator obtains the starting voltage, control the permanent magnet generator 1 to rotate and start the gasoline engine, so that the charging generator starts to run.

[0076] S5. After the charging generator starts running, collect the voltage value at the output terminal of the charging generator and determine whether the collected voltage value at the output terminal of the charging generator is equal to the preset second voltage value.

[0077] S6. If yes, then control the permanent magnet generator 1 to switch the input state to the output state of charging the peripheral charging device.

[0078] The second voltage value is greater than or equal to the charging voltage value of the peripheral charging device.

[0079] In summary, the present invention provides a charging generator drive circuit and its control method. By setting up a permanent magnet generator, a voltage regulation circuit, and a detection chip, the permanent magnet generator is electrically connected to the voltage regulation circuit. The voltage regulation circuit includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the permanent magnet generator, the voltage acquisition circuit, and the charging port of the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device. This allows the switching of the input and output terminals of the permanent magnet generator to be controlled by detecting the voltage values ​​at the charging and output ports of the charging generator, realizing the charging and power generation of the charging generator. This prevents the charging generator from being in a continuous power generation state, thereby saving fuel. The throttle control module controls the throttle motor to adjust the intake air volume of the valve through the voltage acquisition analog signal and current acquisition analog signal fed back from the voltage regulation circuit. Ultimately, it can control the gasoline engine speed to increase or decrease the output voltage or current of the charging generator.

[0080] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A control method for a generator drive circuit capable of switching between charging and generating modes, characterized in that, Including the drive current, the drive circuit includes: The device includes a permanent magnet generator, a voltage regulation circuit, and a detection chip, all mounted on a charging generator. The voltage regulation circuit includes a voltage acquisition circuit and an input / output switching circuit. The input / output switching circuit is electrically connected to the charging ports of the permanent magnet generator, the voltage acquisition circuit, and the charging generator, respectively. The detection chip is electrically connected to the permanent magnet generator and the input / output switching circuit, respectively. The charging port of the charging generator is electrically connected to an external charging device. The input / output switching circuit is a conventional circuit capable of switching between input and output. It also includes a throttle control module and a throttle control motor, wherein the throttle control module is electrically connected to the throttle control motor, the voltage acquisition circuit and the detection chip respectively; The voltage regulation circuit also includes a power supply voltage regulator circuit, which is electrically connected to the throttle control module and the input / output switching circuit, respectively. The voltage regulation circuit also includes a current acquisition circuit, which is electrically connected to the input / output switching circuit. The voltage regulation circuit also includes an undervoltage and overcurrent protection circuit, which is electrically connected to the charging ports of the voltage acquisition circuit, the permanent magnet generator, and the charging generator, respectively. The throttle control module includes a main control chip of model N76E003AT20 and a driver chip of model ULN2003, and the main control chip and the driver chip are electrically connected. The voltage regulation circuit also includes a protection relay, and the input / output switching circuit is electrically connected to the charging port of the charging generator through the protection relay. It also includes a three-phase rectifier bridge circuit, which is electrically connected to the voltage regulation circuit and the permanent magnet generator respectively; The control method includes the following steps: S1. Control the charging device of the peripheral device to charge the charging port of the charging generator. S2. Collect the voltage value of the charging port of the charging generator and determine whether the collected voltage value of the charging port of the charging generator is higher than the first preset voltage value. S3. If yes, then control the permanent magnet generator to switch the output state to the input state so that the charging generator can obtain the starting voltage. S4. After the charging generator obtains the starting voltage, control the permanent magnet generator to rotate and start the gasoline engine, so that the charging generator starts to run. S5. After the charging generator starts running, collect the voltage value at the output terminal of the charging generator and determine whether the collected voltage value at the output terminal of the charging generator is equal to the preset second voltage value. S6. If yes, then control the permanent magnet generator to switch the input state to the output state of charging the peripheral charging device.

2. The control method for a generator drive circuit capable of switching between charging and power generation modes according to claim 1, characterized in that, The three-phase rectifier bridge circuit includes diodes D1, D2, D3, D4, D5, and D6. The anode of diode D1 is electrically connected to the permanent magnet generator and the cathode of diode D4, respectively. The anode of diode D2 is electrically connected to the permanent magnet generator and the cathode of diode D5, respectively. The anode of diode D3 is electrically connected to the permanent magnet generator and the cathode of diode D6, respectively. The cathode of diode D1 is electrically connected to the cathodes of diodes D2 and D3 and the voltage regulation circuit, respectively. The anode of diode D4 is electrically connected to the anodes of diodes D5 and D6 and the voltage regulation circuit, respectively.

3. The control method for a generator drive circuit capable of switching between charging and power generation modes according to claim 1, characterized in that, The second voltage value is greater than or equal to the charging voltage value of the peripheral charging device.

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