Special vehicle-based power generation and dust extraction integrated system

Abstract

The application relates to a special vehicle-based power generation and dust extraction integrated system and belongs to the field of vehicle design. The application is used for power generation and power supply of an electric vehicle, power generation is carried out through the arrangement of a main generator and an auxiliary generator, a power generation control module is arranged, different frequency conversion and voltage conversion alternating current of the main generator and the auxiliary generator is rectified into stabilized direct current, power supply is provided for vehicle-mounted electric equipment, meanwhile, the power generation control module supplies power for a dust extraction pump and a dust extraction module, the power demand of the vehicle for electric equipment of different voltage systems is met, the power demand of the present complex circuit high-voltage hybrid and high-power electric equipment is met, the problem of single voltage output of the generator is solved, and information of the generator and the dust extraction motor is transmitted to a vehicle total database through a CAN communication module.

Description

Technical Field

[0001] This invention belongs to the field of vehicle design, specifically relating to an integrated power generation and dust extraction system based on special vehicles. Background Technology

[0002] With the development of modern technology, vehicles are using more and more electrical equipment, resulting in a greater demand for electrical power. Moreover, the voltage requirements for different electrical equipment are not the same, and they are divided into high-voltage electrical equipment and low-voltage electrical equipment.

[0003] Traditional vehicle-mounted power generation systems have relatively low power output and can only output a single voltage, which cannot meet the current demand for high-voltage mixed and high-power electricity. Therefore, how to simultaneously meet the requirements of high- and low-voltage mixed output and high-power electricity demand has become a technical problem that urgently needs to be solved by those skilled in the art.

[0004] Traditional vehicle-mounted power generation systems generate electricity through generators, which can only output one voltage level. To achieve mixed high and low voltage power supply, the high-voltage electricity generated by the generator needs to be stepped down or the low-voltage electricity needs to be stepped up. This requires a dedicated voltage conversion device, and the vehicle also needs to be equipped with a separate dust extraction and control system, increasing the vehicle's size and weight. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The technical problem to be solved by the present invention is how to provide a power generation and dust extraction integrated system based on special vehicles, so as to solve the problem of simultaneously meeting the requirements of high and low voltage mixed output and high power consumption.

[0007] (II) Technical Solution

[0008] To address the aforementioned technical problems, this invention proposes an integrated power generation and dust extraction system based on special vehicles. The system includes: a main generator, a dust extraction pump, a power generation control module, and a dust extraction module.

[0009] The input terminal of the main generator is mechanically connected to the output terminal of the engine, and the output terminal of the main generator is electrically connected to the input terminal of the power generation control module.

[0010] The dust extraction module includes a speed sensor, a dust extraction main control board, and a dust extraction drive module. The sensing end of the speed sensor is electrically connected to the engine, the output end of the speed sensor is electrically connected to the input end of the dust extraction main control board, the output end of the dust extraction main control board is electrically connected to the control end of the dust extraction drive module, the output end of the power generation control module is electrically connected to the input end of the dust extraction drive module, and the output end of the dust extraction drive module is electrically connected to the control end of the dust pump.

[0011] Furthermore, by setting up a main generator to generate electricity, and by setting up a power generation control module to use a fully controlled rectifier circuit and an LLC bridge circuit, the variable frequency and variable voltage AC power is rectified into regulated DC power to power the vehicle's electrical equipment.

[0012] Furthermore, the dust extraction module also includes a dust extraction CAN communication module, which is electrically connected to the vehicle's main database for communication. The dust extraction CAN communication module is also electrically connected to the input terminal of the dust extraction main control board, which is a variable frequency and variable voltage control board. It performs closed-loop adjustment based on the real-time collected speed feedback and the speed target value. The dust extraction main control board obtains the engine speed in real time from the dust extraction CAN communication module and generates a dust extraction speed command based on the engine speed, and autonomously adjusts and controls the speed of the dust extraction pump.

[0013] Furthermore, the dust extraction module also includes a dust extraction sampling module, which is connected to a current sensor and a voltage sensor. The sensing ends of the current sensor and the voltage sensor are both located at the output end of the dust extraction drive module. The output ends of the current sensor and the voltage sensor are electrically connected to the dust extraction sampling module to collect the current and voltage values ​​of the dust extraction module and upload them to the vehicle's overall database for convenient overall monitoring and control.

[0014] Furthermore, the power generation control module includes a main high-voltage module and a low-voltage module. Both the main high-voltage module and the low-voltage module are equipped with a main control board and a drive module. The output terminal of the main control board of the main high-voltage module is electrically connected to the input terminal of the drive module of the main high-voltage module. The output terminal of the main control board of the low-voltage module is electrically connected to the input terminal of the drive module of the low-voltage module. The output terminal of the main generator is electrically connected in sequence to the input terminals of the drive modules of the main high-voltage module, the drive modules of the low-voltage module, and the dust extraction drive module.

[0015] Furthermore, both the main high-voltage module and the low-voltage module are equipped with a sampling module and a CAN communication module; the output terminal of the sampling module of the main high-voltage module is electrically connected to the input terminal of the CAN communication module of the main high-voltage module, and the output terminal of the CAN communication module of the main high-voltage module is electrically connected to the vehicle's overall database; the output terminal of the sampling module of the low-voltage module is electrically connected to the input terminal of the CAN communication module of the low-voltage module, and the output terminal of the CAN communication module of the low-voltage module is electrically connected to the vehicle's overall database.

[0016] Furthermore, the sampling module of the main high-voltage module is equipped with a current sensor and a voltage sensor, the sensing terminals of which are located at the output terminals of the drive module of the main high-voltage module. The sampling module of the main high-voltage module also includes temperature sensors, with two or more sensors. The sensing terminals of the temperature sensors are positioned close to the main generator, the main control board of the main high-voltage module, and the drive module of the main high-voltage module. The sampling module collects the current value, voltage value, generator temperature value, and main high-voltage module temperature value of the main high-voltage module in real time, and uploads them to the vehicle's overall database via the CAN communication module of the main high-voltage module. The CAN communication module of the main high-voltage module is electrically connected to the main generator for communication. The operating status and fault mode of the main generator are uploaded to the vehicle's overall database via the CAN communication module of the main high-voltage module.

[0017] The low-voltage module's sampling module is equipped with sensors, specifically two or more sensors. One of these sensors is a current sensor, with its sensing end located at the output terminal of the low-voltage module's drive module. Another sensor is a voltage sensor, with its sensing end also located at the output terminal of the low-voltage module's drive module. The low-voltage module's sampling module is also equipped with temperature sensors, specifically two or more temperature sensors. The sensing ends of these temperature sensors are positioned close to the low-voltage module's main control board and drive module. The current, voltage, and temperature values ​​of the low-voltage module are all uploaded to the vehicle's main database via the low-voltage module's CAN communication module.

[0018] Furthermore, the main high-voltage module also includes a relay module. The relay module is specifically constructed as follows: the output terminal of the drive module of the main high-voltage module is equipped with a main relay, which supplies power to the on-board electrical equipment. A pre-charging circuit is connected in parallel to the main relay, consisting of a pre-charging relay and a pre-charging resistor connected in series. The control terminals of the main relay and the pre-charging relay are electrically connected to the output terminal of the main control board of the main high-voltage module. Under the control of the main control board of the main high-voltage module, the main relay and the pre-charging relay perform grid connection and grid disconnection operations on the output of the main high-voltage module according to the operating environment. The main high-voltage module, by setting up the main relay, pre-charging relay, and pre-charging resistor, flexibly controls the output voltage according to the generator speed, preventing instantaneous high voltage from causing impact damage to downstream equipment. Before the main relay closes, the main control board first closes the pre-charging relay. The pre-charging relay is electrically connected to the pre-charging resistor, which acts as a current limiter, slowly pre-charging the electrical load in the circuit. Then, the pre-charging relay is opened, and the main relay is closed. At the moment of opening, the main relay will not stick due to overcurrent; at the moment of opening, the main relay will not arc, providing a certain degree of protection for the main relay and the downstream electrical load.

[0019] Furthermore, the system also includes an auxiliary generator; the power generation control module also includes an auxiliary high-voltage module; the input terminal of the auxiliary generator is electrically connected to the output terminal of the engine, and the main generator and auxiliary generator each use two engines, which are independent of each other; the output terminal of the auxiliary generator is electrically connected to the input terminal of the auxiliary high-voltage module, and the output terminal of the auxiliary high-voltage module is electrically connected to the input terminal of the low-voltage module; when the power demand is high, the main generator's power generation is insufficient, or the main generator fails, the auxiliary generator compensates for its power to ensure the normal operation of the vehicle; the output of the auxiliary generator is a stable 220V AC power; the auxiliary high-voltage module rectifies the 220V AC power into a stable 330V DC power to power the on-board electrical equipment and the low-voltage module 220; the main high-voltage module and the auxiliary high-voltage module are independent of each other.

[0020] Furthermore, the auxiliary high-voltage module includes a main control board, a drive unit, a sampling module, and a CAN communication module. The sampling module of the auxiliary high-voltage module has two or more sensors, one of which is a current sensor with its sensing end located at the output terminal of the drive module of the main high-voltage module; another sensor is a voltage sensor with its sensing end located at the output terminal of the drive module of the auxiliary high-voltage module. The main control board of the auxiliary high-voltage module acquires current and voltage data through the CAN communication module. The main control board determines the power supply status based on the real-time collected current and voltage information. When the power is below a threshold and the data indicates insufficient power, a request is sent to the CAN communication module, which transmits the request to the main control board of the auxiliary high-voltage module via the vehicle's overall database. The main control board of the auxiliary high-voltage module then controls the auxiliary generator to start operating through the drive module.

[0021] (III) Beneficial Effects

[0022] This invention proposes an integrated power generation and dust extraction system for special vehicles. The main generator and auxiliary generator each utilize two separate engines, which operate independently. The output of the auxiliary generator is electrically connected to the input of the auxiliary high-voltage module, and the output of the auxiliary high-voltage module is electrically connected to the input of the low-voltage module. When power demand is high, the main generator's power output is insufficient, or the main generator malfunctions, the auxiliary generator can compensate for its power consumption, ensuring normal vehicle operation. The connection method of the auxiliary generator is basically the same as that of the main generator, but unlike the main generator, which outputs a variable-frequency voltage depending on the vehicle's throttle position, the auxiliary generator outputs a stable 220V AC power. The composition and connection method of the auxiliary high-voltage module are basically the same as those of the main high-voltage module. The auxiliary high-voltage module rectifies the 220V AC power into a stable 330V DC power, supplying power to the vehicle's electrical equipment and the low-voltage module. Adding an auxiliary generator is an alternative solution to improve the implementation stability of this solution. It should be noted that the main generator and auxiliary generator, as well as the main high-voltage module and auxiliary high-voltage module, are independent of each other.

[0023] This invention provides power generation and supply for electric vehicles. It utilizes a main generator and an auxiliary generator for power generation. A power generation control module rectifies the AC power from the main and auxiliary generators (which operate at different frequencies and voltages) into regulated DC power to supply onboard electrical equipment. Simultaneously, the power generation control module also supplies power to the dust pump and dust extraction module, meeting the vehicle's power requirements for equipment with different voltage systems and addressing the complex, high-voltage, and high-power demands of modern circuits. It solves the problem of single-voltage generator output and transmits generator and dust extraction motor information to the vehicle's central database via a CAN communication module. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the integrated power generation and dust extraction system of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the integrated power generation and dust extraction system according to an embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0027] This invention integrates a voltage conversion device and a dust extraction control system, greatly reducing the system size and weight, and making the vehicle more integrated.

[0028] This invention relates to an integrated power generation and dust extraction system for special vehicles. It generates and supplies electricity to the vehicle by using a main generator and a power generation control module. Utilizing a fully controlled rectifier circuit and an LLC bridge circuit, the system rectifies the variable-frequency AC power into regulated DC power to supply the vehicle's electrical equipment. The invention also includes a dust extraction pump and module, powered by the power generation control module. This pump removes dust from the engine intake air, delivering clean air and improving engine efficiency, thus ensuring a continuous and stable power supply to the vehicle. The dust extraction pump, powered by the power generation device, only operates during use. As long as the power supply is sufficient, it will not become saturated and will not malfunction, eliminating the need for periodic replacement.

[0029] Most existing engines have air filters installed at the air intake. During engine operation, dust is drawn into the air filter along with the air, causing a large amount of dust to adhere to the filter surface, easily leading to filter blockage. This directly affects the airflow through the filter, resulting in a reduction in the engine's intake air volume. A dust pump can ensure filtration effectiveness and reduce the maintenance costs of the air filter.

[0030] This invention uses CAN communication to collect engine speed data in real time and transmits this information to the dust extraction main control board. The dust extraction main control board uses frequency conversion and voltage conversion to compare the real-time collected speed feedback with the target speed value, performing closed-loop adjustment to generate a dust extraction speed command. This command is then used by the dust extraction drive module to autonomously adjust and control the dust extraction pump speed. Due to factors such as road conditions, increased throttle input by the operator increases engine speed, and the dust extraction pump should also adjust its speed accordingly to maintain air filtration functionality. The dust extraction pump fan speed is directly proportional to the engine speed. Compared to traditional air filters that filter the intake air, this invention collects engine speed data in real time and adjusts the dust extraction pump speed accordingly, allowing for flexible adjustment of the dust extraction intensity.

[0031] Figure 1 A schematic diagram of an integrated power generation and dust extraction system according to an embodiment of the present invention is shown; Figure 2 A partial structural schematic diagram of an integrated power generation and dust extraction system according to an embodiment of the present invention is shown.

[0032] like Figure 1 As shown, the integrated power generation and dust extraction system includes: a main generator 100, a dust extraction pump, a power generation control module, and a dust extraction module 400;

[0033] The input terminal of the main generator 100 is mechanically connected to the output terminal of the engine, and the output terminal of the main generator 100 is electrically connected to the input terminal of the power generation control module.

[0034] The dust extraction module includes a speed sensor, a dust extraction main control board, and a dust extraction drive module. The sensing end of the speed sensor is electrically connected to the engine, the output end of the speed sensor is electrically connected to the input end of the dust extraction main control board, the output end of the dust extraction main control board is electrically connected to the control end of the dust extraction drive module, the output end of the power generation control module is electrically connected to the input end of the dust extraction drive module, and the output end of the dust extraction drive module is electrically connected to the control end of the dust pump.

[0035] This invention provides power generation and supply for electric vehicles. It generates electricity by setting up a main generator 100 and uses a fully controlled rectifier circuit and LLC bridge circuit to rectify the variable frequency and variable voltage AC power into regulated DC power, preferably 330V DC power and 28V DC power, to supply power to the vehicle's electrical equipment.

[0036] This invention includes a dust extraction pump and a dust extraction module 400, powered by a power generation control module. This system removes dust from the engine intake air, delivering clean air and improving engine efficiency, thus ensuring a continuous and stable power supply to the vehicle. Existing engines typically have air filters at the intake, requiring replacement and maintenance. Delayed replacement can lead to air filtration failure. The dust extraction pump, powered by the generator of this invention, operates only during use. As long as the power supply is sufficient, it will not become ineffective due to oversaturation and does not require periodic replacement. Existing engines often have air filters at the intake. During engine operation, dust is drawn into the air filter with the air, causing a large amount of dust to adhere to the filter surface, easily clogging it and directly affecting the airflow through the filter, resulting in a reduction in engine intake air volume. The dust extraction pump ensures effective filtration and reduces the maintenance cost of the air filter. This invention also incorporates a speed sensor to collect engine speed data in real time and transmits this information to the dust extraction main control board. The dust extraction main control board uses frequency conversion and voltage regulation to compare and adjust the dust extraction speed in a closed loop based on real-time collected speed feedback and target speed values. This generates a dust extraction speed command, which is then autonomously adjusted and controlled by the dust extraction drive module. For example, when the engine speed is between 600 and 2000 rpm, the dust extraction main control board adjusts the dust extraction pump speed to between 5000 and 18000 rpm. Due to factors such as road conditions, increased throttle input increases engine speed, and the dust extraction pump should also adjust its speed accordingly to maintain air filtration functionality. The speed of the dust extraction pump fan is directly proportional to the engine speed. Compared to traditional air filters that filter the intake air, this invention collects engine speed data in real time and adjusts the dust extraction pump speed accordingly, allowing for flexible adjustment of the dust extraction speed to meet the engine's air intake requirements.

[0037] In one possible implementation, there are two or more dust extraction modules 400.

[0038] In one possible implementation, such as Figure 1 As shown, there are two dust extraction modules 400, which filter the engine air intake from different directions.

[0039] In one possible implementation, the dust extraction module also includes a dust extraction CAN communication module. This CAN communication module is electrically connected to the vehicle's main database for communication and is also electrically connected to the input terminal of the dust extraction main control board 410. The dust extraction main control board 410 is a variable frequency and variable voltage system that performs closed-loop adjustment based on real-time collected speed feedback and target speed values. The dust extraction main control board 410 obtains the engine speed in real-time from the dust extraction CAN communication module and, based on the engine speed, determines and generates a dust extraction speed command, autonomously adjusting and controlling the dust extraction pump speed. When the vehicle throttle sends a command to the engine, the power generation workload is high, and the engine speed is high; therefore, the dust extraction pump should also adjust its speed accordingly to ensure air filtration functionality.

[0040] In one possible implementation, the dust extraction module also includes a dust extraction sampling module, which has two or more sensors.

[0041] In one possible implementation, the dust extraction sampling module is connected to a current sensor and a voltage sensor. The sensing terminals of both the current and voltage sensors are located at the output terminals of the dust extraction drive module 420, and their output terminals are electrically connected to the dust extraction sampling module. The current and voltage values ​​of the dust extraction module are collected and uploaded to the vehicle's overall database for convenient overall monitoring and control.

[0042] In one possible implementation, such as Figure 1 As shown, the power generation control module includes a main high-voltage module 210 and a low-voltage module 220; both the main high-voltage module and the low-voltage module are equipped with a main control board and a drive module. The output terminal of the main control board 211 of the main high-voltage module 210 is electrically connected to the input terminal of the drive module 212 of the main high-voltage module 210, and the output terminal of the main control board of the low-voltage module 220 is electrically connected to the input terminal of the drive module of the low-voltage module 220, as shown. Figure 2 As shown, both the main high-voltage module 210 and the low-voltage module 220 are equipped with a main control board and a drive module. The output terminal of the main generator 100 is electrically connected to the drive module 212 of the main high-voltage module 210, the drive module of the low-voltage module 220, and the input terminal of the dust extraction drive module in sequence.

[0043] The main control board and drive circuit module use a vector control algorithm to stably control the three-phase AC power to output DC power at a specific voltage. Its circuit topology... Figure 1 As shown; the AC power generated by the main generator 100 is rectified into 330V DC power by the main high-voltage module 210. One path of the 330V DC power supplies the high-voltage equipment, and the other path of the 330V DC power is converted into 28V DC power by the low-voltage module 220. Its circuit topology is as follows. Figure 1 As shown; power is supplied to the dust extraction module, the heat dissipation module 500, and low-voltage electrical equipment.

[0044] In one possible implementation, both the main high-voltage module 210 and the low-voltage module 220 are equipped with a sampling module and a CAN communication module; the output terminal of the sampling module of the main high-voltage module 210 is electrically connected to the input terminal of the CAN communication module of the main high-voltage module 210, and the output terminal of the CAN communication module of the main high-voltage module 210 is electrically connected to the vehicle's overall database; the output terminal of the sampling module of the low-voltage module 220 is electrically connected to the input terminal of the CAN communication module of the low-voltage module 220, and the output terminal of the CAN communication module of the low-voltage module 220 is electrically connected to the vehicle's overall database.

[0045] Furthermore, the sampling module of the main high voltage module is equipped with a current sensor and a voltage sensor, and the sensing terminals of the current sensor and the voltage sensor are located at the output terminal of the drive module of the main high voltage module.

[0046] Furthermore, the sampling module of the main high voltage module 210 is equipped with temperature sensors, and there are two or more temperature sensors. The sensing ends of the temperature sensors are located close to the main generator 100, the main control board 211 of the main high voltage module 210, and the drive module 212 of the main high voltage module 210.

[0047] In one possible implementation, the sampling module collects the current value, voltage value, generator temperature value, and main high-voltage module 210 temperature value in real time, and uploads them to the vehicle's overall database via the CAN communication module of the main high-voltage module 210. The CAN communication module of the main high-voltage module 210 is electrically connected to the main generator 100 for communication, and the operating status and fault mode of the main generator 100 are uploaded to the vehicle's overall database by the CAN communication module of the main high-voltage module 210.

[0048] In one possible implementation, the sampling module of the low-voltage module 220 includes two or more sensors. One of these sensors is a current sensor, with its sensing terminal located at the output terminal of the drive module of the low-voltage module 220. Another sensor is a voltage sensor, with its sensing terminal located at the output terminal of the drive module of the low-voltage module.

[0049] In one possible implementation, the sampling module of the low-voltage module 220 is equipped with temperature sensors, and there are two or more temperature sensors. The sensing ends of the temperature sensors are located close to the main control board of the low-voltage module 220 and the drive module of the low-voltage module 220.

[0050] In one possible implementation, the current value, voltage value, and temperature value of the low-voltage module 220 are all uploaded to the vehicle's overall database by the CAN communication module of the low-voltage module 220.

[0051] In one possible implementation, such as Figure 2 As shown, the main high-voltage module 210 also includes a relay module 213. The relay module 213 is specifically constructed as follows: the output terminal of the drive module 212 of the main high-voltage module 210 is equipped with a main relay, the output terminal of which supplies power to the vehicle's electrical equipment. A pre-charging circuit is connected in parallel to the main relay, consisting of a pre-charging relay and a pre-charging resistor connected in series. The control terminals of the main relay and the pre-charging relay are electrically connected to the output terminal of the main control board 211 of the main high-voltage module 210. Under the control of the main control board 212 of the main high-voltage module 210, the main relay and the pre-charging relay can perform grid connection and grid disconnection operations on the output of the main high-voltage module 210 according to the operating environment.

[0052] The main high-voltage module 210, by setting up a main relay, a pre-charge relay, and a pre-charge resistor, achieves flexible control of the output voltage based on the generator speed, preventing damage to downstream equipment from instantaneous high voltage surges. Before the main relay closes, the main control board first closes the pre-charge relay. The pre-charge relay is electrically connected to a pre-charge resistor, which acts as a current limiter, slowly pre-charging the electrical load in the circuit. Afterward, the pre-charge relay is opened, and the main relay closes. At the moment of opening, the main relay will not stick due to overcurrent; at the moment of opening, the main relay will not arc, providing a certain degree of protection for the main relay and the downstream electrical load.

[0053] In one possible implementation, such as Figure 1 As shown, it also includes an auxiliary generator; the power generation control module also includes an auxiliary high-voltage module 220, the circuit topology of which is shown in the figure. The input terminal of the auxiliary generator is electrically connected to the output terminal of the engine. It should be noted that the main generator and the auxiliary generator each use two engines, and the two engines are independent of each other. The output terminal of the auxiliary generator is electrically connected to the input terminal of the auxiliary high-voltage module 220, and the output terminal of the auxiliary high-voltage module 220 is electrically connected to the input terminal of the low-voltage module 220. When the power demand is high, the power output of the main generator 100 is insufficient, or the main generator 100 fails, the auxiliary generator can compensate for its power to ensure the normal operation of the vehicle. The connection method of the auxiliary generator and the main generator 100 is basically the same, but unlike the main generator 100, which outputs a variable frequency voltage depending on the vehicle's throttle position, the auxiliary generator outputs a stable 220V AC power. The composition and connection method of the auxiliary high-voltage module 220 are basically the same as those of the main high-voltage module 210. The auxiliary high-voltage module 220 rectifies the 220V AC power into a stable 330V DC power to power the on-board electrical equipment and the low-voltage module 220. Adding an auxiliary generator is an alternative solution to improve the stability of this solution. It should be noted that the main generator 100 and the auxiliary generator, as well as the main high-voltage module 210 and the auxiliary high-voltage module 220, are independent of each other.

[0054] Furthermore, the auxiliary high-voltage module 220 includes a main control board, a drive unit, a sampling module, and a CAN communication module. The sampling module of the auxiliary high-voltage module 220 includes two or more sensors, one of which is a current sensor, with its sensing end located at the output terminal of the drive module 212 of the auxiliary high-voltage module 220. Another sensor is a voltage sensor, with its sensing end also located at the output terminal of the drive module 212. The main control board of the auxiliary high-voltage module 220 acquires current and voltage data through its CAN communication module. The main control board of the auxiliary high-voltage module 220 determines the power supply status based on the real-time collected current and voltage information. When the power is below a threshold and the data indicates insufficient power, a request is sent to the CAN communication module, which transmits the request to the main control board of the auxiliary high-voltage module via the vehicle's overall database. The main control board of the auxiliary high-voltage module then controls the auxiliary generator to start operating through the drive module.

[0055] In one possible implementation, when the power is insufficient, the main generator voltage will drop below the set value, and the main control board 211 of the main high voltage module 210 will determine that the main generator power is insufficient.

[0056] Furthermore, the main generator's output voltage is 330V, and its maximum power is 10kW. With 200V set as the threshold, when the demand power exceeds 10kW, the voltage may drop to 200V, which will trigger the power shortage condition.

[0057] An engine dust extraction control device is provided according to another aspect of this application, such as... Figure 2 As shown, the system includes a power generation control module, a dust extraction module, and a housing. The input terminal of the power generation control module is electrically connected to the output terminal of the main generator. The dust extraction module includes a speed sensor, a dust extraction main control board, and a dust extraction drive module. The sensing terminal of the speed sensor is electrically connected to the engine, and the output terminal of the speed sensor is electrically connected to the input terminal of the dust extraction main control board. The output terminal of the dust extraction main control board is electrically connected to the control terminal of the dust extraction drive module, and the output terminal of the dust extraction drive module is electrically connected to the control terminal of the dust pump. The power generation control module, the dust extraction main control board, and the dust extraction drive module are all housed inside the housing.

[0058] This invention relates to vehicle power supply control. A generator control module rectifies the variable frequency AC power into regulated DC power to supply power to onboard electrical equipment and the dust extraction module. A dust extraction pump and dust extraction module 400 are installed, and the generator control module supplies power to the dust extraction pump and dust extraction module 400, removing dust from the engine intake air and delivering clean air, thereby improving engine efficiency and ensuring a continuous and stable power supply to the vehicle. The enclosure provides some protection for the aforementioned modules. A speed sensor in the dust extraction module collects engine speed data in real time and transmits this information to the dust extraction main control board. The dust extraction main control board uses variable frequency and voltage regulation, comparing the real-time speed feedback with the target speed value for closed-loop adjustment, generating a dust extraction speed command, and autonomously adjusting and controlling the dust extraction pump speed through the dust extraction drive module. Due to factors such as road conditions, increased throttle input by the driver increases engine speed, and the dust extraction pump should also adjust and increase its speed accordingly to maintain air filtration functionality. The speed of the dust extraction pump fan is directly proportional to the engine speed. Compared to traditional air filters that filter the incoming air, this invention collects engine speed in real time and adjusts the pump speed accordingly, enabling flexible adjustment of the dust extraction speed.

[0059] In one possible implementation, the engine dust extraction control device also includes the main generator.

[0060] In one possible implementation, the power generation control module includes a main high-voltage module 210 and a low-voltage module 220, all of which are housed inside a enclosure. The enclosure provides some protection for these modules.

[0061] In one possible implementation, the engine dust extraction control device also includes an auxiliary generator, and the power generation control module also includes an auxiliary high-voltage module 220.

[0062] Furthermore, such as Figure 2 As shown, the main high-voltage module 210, low-voltage module 220, auxiliary high-voltage module 220, and dust extraction module 400 are electrically connected to external equipment via aviation connectors. The electrical connections between the modules are complex and the wiring is messy. To maintain simplicity and prevent confusion, aviation connectors are used for each module. Furthermore, the aviation connectors are standard-sized, convenient, quick, and readily available.

[0063] In one possible implementation, the enclosure houses water-cooled pipes and a water pump. The water-cooled pipes are positioned close to the power generation control module, the dust extraction main control board, and the dust extraction drive module. The input of the water pump is electrically connected to the output of the power generation control module. The water pump controls the circulation of coolant within the water-cooled pipes; the coolant is driven by the pump for internal circulation cooling. The water pump is powered by the power generation control module. Since the main control boards and drive modules of each module within the enclosure are prone to heat generation, the water-cooled pipes and pump are used to dissipate heat, preventing overheating and potential malfunctions within the enclosure.

[0064] In one possible implementation, the water-cooled pipes are positioned close to the main high-pressure module 210, the low-pressure module 220, the auxiliary high-pressure module 220, the dust extraction main control board, and the dust extraction drive module.

[0065] In one possible implementation, the input of the water pump is electrically connected to the output of the low-voltage module 220, and the water pump is powered by the low-voltage module 220.

[0066] In one possible implementation, such as Figure 2 As shown, the enclosure has a top cover, and a water-cooled cavity is located inside the enclosure at the end opposite to the top cover. Water-cooled pipes are installed inside the water-cooled cavity, and the power generation control module is located close to the water-cooled cavity.

[0067] In one possible implementation, the main high-voltage module 210, the low-voltage module 220, the auxiliary high-voltage module 220, and the dust extraction module 400 are all located close to the water-cooled cavity.

[0068] In one possible implementation, such as Figure 2 As shown, it also includes a heat dissipation module 500; the heat dissipation module 500 includes a fan, which is positioned near and facing the water cooling pipes, and the fan's input terminal is electrically connected to the output terminal of the power generation control module. The heat dissipation module 500 dissipates heat from the internally circulating coolant, maintaining the coolant's cooling capacity. The heat dissipation module 500 enables rapid cooling of the circulating water to ensure that the power generation control module is always within its optimal operating temperature range.

[0069] Furthermore, the enclosure is equipped with ventilation holes to allow air circulation with the external environment and aid in heat dissipation.

[0070] Furthermore, the heat dissipation module 500 also includes a main control board, a drive module, and a sampling module. The sampling module collects the temperature value of the circulating water and uploads it to the main control board. The main control board and the drive module drive the fan blades to rotate at a certain speed based on the real-time temperature. This ensures heat dissipation capacity while also offering the advantages of energy saving and noise reduction.

[0071] In one possible implementation, the input of the fan is electrically connected to the output of the low-voltage module 220, and the fan is powered by the low-voltage module 220.

[0072] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0073] Key points of this invention:

[0074] The output of the main high-voltage module's drive module is equipped with a main relay, which supplies power to the vehicle's electrical equipment. A pre-charging circuit is connected in parallel to the main relay, consisting of a pre-charging relay and a pre-charging resistor connected in series. The control terminals of the main relay and the pre-charging relay are electrically connected to the output of the main control board of the main high-voltage module. Under the control of the main control board of the main high-voltage module, the main relay and the pre-charging relay can perform grid connection and grid disconnection operations on the output of the main high-voltage module according to the operating environment.

[0075] The main high-voltage module, through the setting of a main relay, a pre-charge relay, and a pre-charge resistor, achieves flexible control of the output voltage based on the generator speed, preventing damage to downstream equipment from instantaneous high voltage surges. Before the main relay closes, the main control board first closes the pre-charge relay. The pre-charge relay is electrically connected to a pre-charge resistor, which acts as a current limiter, slowly pre-charging the electrical load in the circuit. Then, the pre-charge relay is opened, and the main relay closes. At the moment of opening, the main relay will not stick due to overcurrent; at the moment of opening, the main relay will not arc, providing a certain degree of protection for the main relay and the downstream electrical load.

[0076] Effects of the invention:

[0077] The main generator and auxiliary generator each use two separate engines, which operate independently. The output of the auxiliary generator is electrically connected to the input of the auxiliary high-voltage module, and the output of the auxiliary high-voltage module is electrically connected to the input of the low-voltage module. When power demand is high, the main generator's power output is insufficient, or the main generator malfunctions, the auxiliary generator can compensate for its power, ensuring normal vehicle operation. The connection method of the auxiliary generator is basically the same as that of the main generator, but unlike the main generator, which outputs variable-frequency voltage depending on the vehicle's throttle position, the auxiliary generator outputs a stable 220V AC power. The composition and connection method of the auxiliary high-voltage module are basically the same as those of the main high-voltage module. The auxiliary high-voltage module rectifies the 220V AC power into a stable 330V DC power, supplying power to the vehicle's electrical equipment and the low-voltage module. Adding an auxiliary generator is an alternative solution to improve the stability of this implementation. It should be noted that the main generator and auxiliary generator, as well as the main high-voltage module and auxiliary high-voltage module, are independent of each other in this invention.

[0078] This invention provides power generation and supply for electric vehicles. It utilizes a main generator and an auxiliary generator for power generation. A power generation control module rectifies the AC power from the main and auxiliary generators (which operate at different frequencies and voltages) into regulated DC power to supply onboard electrical equipment. Simultaneously, the power generation control module also supplies power to the dust pump and dust extraction module, meeting the vehicle's power requirements for equipment with different voltage systems and addressing the complex, high-voltage, and high-power demands of modern circuits. It solves the problem of single-voltage generator output and transmits generator and dust extraction motor information to the vehicle's central database via a CAN communication module.

[0079] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A special vehicle based integrated power generation and dust extraction system, characterized in that, The system includes: a main generator, a dust pump, a power generation control module, and a dust extraction module; The input terminal of the main generator is mechanically connected to the output terminal of the engine, and the output terminal of the main generator is electrically connected to the input terminal of the power generation control module. The dust extraction module includes a speed sensor, a dust extraction main control board, and a dust extraction drive module. The sensing end of the speed sensor is electrically connected to the engine, the output end of the speed sensor is electrically connected to the input end of the dust extraction main control board, the output end of the dust extraction main control board is electrically connected to the control end of the dust extraction drive module, the output end of the power generation control module is electrically connected to the input end of the dust extraction drive module, and the output end of the dust extraction drive module is electrically connected to the control end of the dust pump. in, The dust extraction module also includes a dust extraction CAN communication module, which is electrically connected to the vehicle's main database for communication. The dust extraction CAN communication module is also electrically connected to the input terminal of the dust extraction main control board. The dust extraction main control board is a variable frequency and variable voltage system that performs closed-loop adjustment based on the real-time collected speed feedback and the target speed value. The dust extraction main control board obtains the engine speed in real time from the dust extraction CAN communication module and generates a dust extraction speed command based on the engine speed, and autonomously adjusts and controls the speed of the dust extraction pump.

2. The integrated power generation and dust extraction system based on special vehicles as described in claim 1, characterized in that, The main generator generates electricity, and the power generation control module uses a fully controlled rectifier circuit and an LLC bridge circuit to rectify the variable frequency and variable voltage AC power into regulated DC power to power the on-board electrical equipment.

3. The integrated power generation and dust extraction system based on special vehicles as described in claim 1, characterized in that, The dust extraction module also includes a dust extraction sampling module, which is connected to a current sensor and a voltage sensor. The sensing ends of the current sensor and the voltage sensor are both located at the output end of the dust extraction drive module. The output ends of the current sensor and the voltage sensor are electrically connected to the dust extraction sampling module to collect the current and voltage values ​​of the dust extraction module and upload them to the vehicle's overall database.

4. The integrated power generation and dust extraction system based on special vehicles as described in any one of claims 1-3, characterized in that, The power generation control module includes a main high-voltage module and a low-voltage module. Both the main high-voltage module and the low-voltage module are equipped with a main control board and a drive module. The output terminal of the main control board of the main high-voltage module is electrically connected to the input terminal of the drive module of the main high-voltage module. The output terminal of the main control board of the low-voltage module is electrically connected to the input terminal of the drive module of the low-voltage module. The output terminal of the main generator is electrically connected to the input terminals of the drive modules of the main high-voltage module, the drive modules of the low-voltage module, and the dust extraction drive module in sequence.

5. The integrated power generation and dust extraction system based on special vehicles as described in claim 4, characterized in that, Both the main high-voltage module and the low-voltage module are equipped with a sampling module and a CAN communication module. The output terminal of the sampling module of the main high-voltage module is electrically connected to the input terminal of the CAN communication module of the main high-voltage module, and the output terminal of the CAN communication module of the main high-voltage module is electrically connected to the vehicle's main database. The output terminal of the sampling module of the low-voltage module is electrically connected to the input terminal of the CAN communication module of the low-voltage module, and the output terminal of the CAN communication module of the low-voltage module is electrically connected to the vehicle's main database.

6. The integrated power generation and dust extraction system based on special vehicles as described in claim 4, characterized in that, The sampling module of the main high-voltage module is equipped with a current sensor and a voltage sensor, the sensing ends of which are located at the output of the drive module of the main high-voltage module. The sampling module of the main high-voltage module is also equipped with a temperature sensor, with two or more temperature sensors. The sensing ends of the temperature sensors are located close to the main generator, the main control board of the main high-voltage module, and the drive module of the main high-voltage module. The sampling module collects the current value, voltage value, generator temperature value, and main high-voltage module temperature value of the main high-voltage module in real time, and uploads them to the vehicle's main database via the CAN communication module of the main high-voltage module. The CAN communication module of the main high-voltage module is electrically connected to the main generator for communication. The operating status and fault mode of the main generator are uploaded to the vehicle's main database via the CAN communication module of the main high-voltage module. The low-voltage module's sampling module is equipped with sensors, specifically two or more sensors. One of these sensors is a current sensor, with its sensing end located at the output terminal of the low-voltage module's drive module. Another sensor is a voltage sensor, with its sensing end also located at the output terminal of the low-voltage module's drive module. The low-voltage module's sampling module is also equipped with temperature sensors, specifically two or more temperature sensors. The sensing ends of these temperature sensors are positioned close to the low-voltage module's main control board and drive module. The current, voltage, and temperature values ​​of the low-voltage module are all uploaded to the vehicle's main database via the low-voltage module's CAN communication module.

7. The integrated power generation and dust extraction system based on special vehicles as described in claim 4, characterized in that, The main high-voltage module also includes a relay module. The relay module is constructed as follows: the output of the main high-voltage module's drive module is equipped with a main relay, which supplies power to the vehicle's electrical equipment. A pre-charging circuit is connected in parallel to the main relay, consisting of a pre-charging relay and a pre-charging resistor connected in series. The control terminals of the main relay and the pre-charging relay are electrically connected to the output of the main control board of the main high-voltage module. Under the control of the main control board, the main relay and the pre-charging relay perform grid connection and grid disconnection operations on the main high-voltage module's output according to the operating environment. The main high-voltage module, by setting up the main relay, pre-charging relay, and pre-charging resistor, flexibly controls the output voltage based on the generator speed, preventing instantaneous high voltage from causing damage to downstream equipment. Before the main relay closes, the main control board first closes the pre-charging relay, which is electrically connected to the pre-charging resistor, acting as a current limiter to slowly pre-charge the electrical load in the circuit. Then, the pre-charging relay is disconnected, and the main relay is closed.

8. The integrated power generation and dust extraction system based on special vehicles as described in claim 4, characterized in that, The system also includes an auxiliary generator; the power generation control module also includes an auxiliary high-voltage module; the input terminal of the auxiliary generator is electrically connected to the output terminal of the engine; the main generator and the auxiliary generator each use two engines, and the two engines are independent of each other; the output terminal of the auxiliary generator is electrically connected to the input terminal of the auxiliary high-voltage module, and the output terminal of the auxiliary high-voltage module is electrically connected to the input terminal of the low-voltage module; when the power demand is high, the main generator's power generation is insufficient, or the main generator fails, the auxiliary generator compensates for its power to ensure the normal operation of the vehicle; the output of the auxiliary generator is a stable 220V AC power; the auxiliary high-voltage module rectifies the 220V AC power into a stable 330V DC power to power the on-board electrical equipment and the low-voltage module 220; the main high-voltage module and the auxiliary high-voltage module are independent of each other.

9. The integrated power generation and dust extraction system based on special vehicles as described in claim 8, characterized in that, The auxiliary high-voltage module includes a main control board, a drive unit, a sampling module, and a CAN communication module. The sampling module of the auxiliary high-voltage module has two or more sensors, one of which is a current sensor with its sensing end located at the output terminal of the drive module of the main high-voltage module; another sensor is a voltage sensor with its sensing end located at the output terminal of the drive module of the auxiliary high-voltage module. The main control board of the auxiliary high-voltage module acquires current and voltage data through the CAN communication module. Based on the real-time collected current and voltage information, the main control board determines the power supply status. When the current and voltage are below a threshold and the data indicates insufficient power, a request is sent to the CAN communication module. This request is then transmitted to the main control board of the auxiliary high-voltage module via the vehicle's overall database. The main control board of the auxiliary high-voltage module then controls the auxiliary generator to start operating through the drive module.

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