A method and system for driving and coordinating control of a pneoelectric wind composite energy storage

Abstract

The application provides a kind of pneumatic-electric wind composite energy storage driving coordination control method, comprising: according to the driving demand signal obtained, the current pressure value of compressed air energy storage unit, the current power value of electric energy storage unit and the output power value of wind power generation unit, control pneumatic power unit and / or electric power unit output driving force;When electric power unit outputs driving force, the electric energy output by wind power generation unit is transported to electric power unit, and when the output power of wind power generation unit is greater than the current power consumption of electric power unit, the remaining electric energy is stored to electric energy storage unit;When the current pressure value of compressed air energy storage unit is lower than pressure threshold, switch to electric power unit output driving force and generate air supplement prompt signal;The application can realize the coordinated scheduling and dynamic matching of three types of energy, compressed air, electric energy and wind energy, improve the efficiency of multi-energy comprehensive utilization, and help to ensure the operation stability and working condition adaptation ability of driving system.

Description

Technical Field

[0001] This invention relates to the field of hybrid power drive technology, specifically to a gas-electric-wind hybrid energy storage drive coordinated control method and system. Background Technology

[0002] Currently, most existing power drive systems adopt a single energy source, such as pure electric drive, pure compressed air drive, and fuel drive. Pure electric drive systems offer high control precision and stable operation, but suffer from long refueling times for energy storage devices and significant limitations in driving range due to capacity constraints. Pure compressed air drive systems offer fast refueling speeds and high low-speed torque output, but have limited air storage capacity, resulting in insufficient continuous driving range. Fuel drive systems offer strong driving range, but suffer from high carbon emissions and high energy costs.

[0003] To balance driving range and operational economy, existing technologies generally include hybrid drive solutions that combine two types of energy, such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and gas-electric hybrid electric vehicles (GEEVs). These dual-energy hybrid drive solutions alleviate the shortcomings of single drive modes to some extent through the complementarity of the two power forms, but they still have corresponding limitations: HEVs and PHEVs still rely on fossil fuels and cannot achieve zero-emission operation; the power switching control strategies of existing GEEV systems are relatively simple, usually switching modes based on a single state parameter, and cannot combine the driving load demand and the remaining state of the two types of energy storage for multi-dimensional coordinated regulation, resulting in low overall energy utilization efficiency and insufficient adaptability under complex operating conditions. Summary of the Invention

[0004] To address the problem of balancing carbon emissions, energy usage costs, and overall energy utilization efficiency in existing energy-driven technologies, this invention proposes a coordinated control method for a gas-electric-wind hybrid energy storage drive system. This method is applied to a hybrid energy storage drive system, which includes: a pneumatic power unit, an electric power unit, a compressed air energy storage unit, an electric energy storage unit, and a wind power generation unit. The compressed air energy storage unit is connected to the pneumatic power unit via an air path. The wind power generation unit and the electric energy storage unit are electrically connected to the electric power unit, respectively. Specifically, the method includes:

[0005] Acquire drive demand signals, current pressure values ​​of compressed air energy storage units, current energy values ​​of electrical energy storage units, and real-time output power values ​​of wind power generation units;

[0006] Based on the drive demand signal, the current pressure value, and the current power value, control the pneumatic power unit and / or electric power unit to output drive force;

[0007] When the power unit outputs driving force, the electrical energy output by the wind power generation unit is transmitted to the power unit. When the output power of the wind power generation unit is greater than the current power consumption of the power unit, the remaining electrical energy is transmitted to the energy storage unit for storage.

[0008] When the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold, the pneumatic power unit is shut down, and the electric power unit is switched to output driving force and generate a replenishment prompt signal.

[0009] Optionally, controlling the pneumatic power unit and / or electric power unit to output driving force based on the driving demand signal, the current pressure value, and the current power value includes:

[0010] The current drive level is determined based on the drive demand signal;

[0011] When the current drive level is determined to be low speed drive level and the current pressure value is higher than the preset working pressure threshold, the pneumatic power unit is controlled to output driving force, and the electric power unit is in standby state.

[0012] When the current drive level is determined to be a medium-high speed drive level and the current battery level is higher than the preset working battery level threshold, the electric power unit is controlled to output driving force, and the pneumatic power unit is in standby mode.

[0013] Optionally, the cooperative control method further includes:

[0014] When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination.

[0015] The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of each of the pneumatic power unit and the electric power unit.

[0016] Optionally, determining the current drive level based on the drive demand signal includes:

[0017] Based on the drive demand signal, extract the demand power value;

[0018] The required power value is compared one by one with the preset low-speed power threshold and high-speed power threshold;

[0019] When the required power value is less than or equal to the low-speed power threshold, it is determined to be a low-speed drive level;

[0020] When the required power value is greater than the low-speed power threshold and less than or equal to the high-speed power threshold, it is determined to be a medium-high speed drive level;

[0021] When the required power value is greater than the high-speed power threshold, it is determined to be a high-load drive level.

[0022] Optionally, the cooperative control method further includes:

[0023] When the current power value of the energy storage unit is lower than the preset low power threshold, the electric power unit is shut down, and the pneumatic power unit is switched to output driving force and generate a charging prompt signal.

[0024] Optionally, the step of transmitting the electrical energy output by the wind power generation unit to the electric power unit while the electric power unit is outputting driving force includes:

[0025] Obtain the current power consumption of the power unit;

[0026] The real-time output power of the wind power generation unit is compared with the current power consumption;

[0027] If the real-time output power is greater than or equal to the current power consumption, the wind power generation unit supplies the electric power unit with the full amount of power, and the excess power is sent to the energy storage unit for storage.

[0028] If the real-time output power is less than the current power consumption, the wind power generation unit and the energy storage unit will jointly supply power to the electric power unit.

[0029] Optionally, the cooperative control method further includes:

[0030] When the pneumatic power unit outputs driving force independently, all the electrical energy output by the wind power generation unit is controlled to be delivered to the energy storage unit for storage.

[0031] Based on the same inventive concept, the present invention also provides a gas-electric-wind hybrid energy storage and drive coordinated control system, comprising:

[0032] The data acquisition module is used to acquire drive demand signals, the current pressure value of the compressed air energy storage unit, the current power value of the electric energy storage unit, and the real-time output power value of the wind power generation unit.

[0033] The drive control module is used to control the pneumatic power unit and / or electric power unit to output drive force according to the drive demand signal, the current pressure value and the current power value;

[0034] The power transmission module is used to transmit the electrical energy output by the wind power generation unit to the power power unit when the power power unit outputs driving force, and to transmit the remaining electrical energy to the power storage unit when the output power of the wind power generation unit is greater than the current power consumption of the power power unit.

[0035] The mode switching module is used to shut down the pneumatic power unit and switch to the electric power unit to output driving force and generate a replenishment prompt signal when the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold.

[0036] Optionally, the drive control module includes:

[0037] The level determination submodule is used to determine the current drive level based on the drive demand signal;

[0038] The pneumatic drive submodule is used to control the pneumatic power unit to output driving force when the current drive level is determined to be a low-speed drive level and the current pressure value is higher than the preset working pressure threshold, while the electric power unit is in standby mode.

[0039] The electric drive submodule is used to control the electric power unit to output driving force when the current drive level is determined to be a medium-high speed drive level and the current power value is higher than the preset working power threshold, while the pneumatic power unit is in standby mode.

[0040] Optionally, the collaborative control system further includes: a hybrid drive submodule, specifically used for:

[0041] When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination.

[0042] The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of each of the pneumatic power unit and the electric power unit.

[0043] Optionally, the level determination submodule includes:

[0044] A power extraction unit is used to extract the required power value based on the drive demand signal;

[0045] The power comparison unit is used to compare the required power value with the preset low-speed power threshold and high-speed power threshold one by one.

[0046] The low-speed determination unit is used to determine the low-speed drive level when the required power value is less than or equal to the low-speed power threshold.

[0047] The medium-high speed determination unit is used to determine the driving level as medium-high speed when the required power value is greater than the low speed power threshold and less than or equal to the high speed power threshold.

[0048] The high load determination unit is used to determine the high load drive level when the required power value is greater than the high speed power threshold.

[0049] Optionally, the collaborative control system further includes a pneumatic switching module, specifically used for:

[0050] When the current power value of the energy storage unit is lower than the preset low power threshold, the electric power unit is shut down, and the pneumatic power unit is switched to output driving force and generate a charging prompt signal.

[0051] Optionally, the power transmission module includes:

[0052] The power acquisition submodule is used to acquire the current power consumption of the power unit;

[0053] The power comparison submodule is used to compare the real-time output power of the wind power generation unit with the current power consumption;

[0054] The wind power supply module is used to supply full power to the electric power unit through the wind power generation unit when the real-time output power is greater than or equal to the current power consumption, and the excess power is sent to the energy storage unit for storage.

[0055] A collaborative power supply module is used to supply power to the electric power unit through the wind power generation unit and the energy storage unit when the real-time output power is less than the current power consumption.

[0056] Optionally, the collaborative control system further includes: an energy storage module, specifically used for:

[0057] When the pneumatic power unit outputs driving force independently, all the electrical energy output by the wind power generation unit is controlled to be delivered to the energy storage unit for storage.

[0058] In another aspect, the present invention also provides an electronic device, comprising: at least one processor and a memory; the memory and the processor are connected via a bus;

[0059] The memory is used to store one or more programs;

[0060] When the one or more programs are executed by the at least one processor, a gas-electric-wind composite energy storage drive coordinated control method as described above is implemented.

[0061] In another aspect, the present invention also provides a computer device readable storage medium having an executable program stored thereon, wherein when the executable program is executed, it implements the gas-electric-wind composite energy storage drive coordinated control method as described above.

[0062] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0063] This invention provides a method and system for coordinated control of pneumatic-electric-wind hybrid energy storage drive, comprising: acquiring a drive demand signal, the current pressure value of a compressed air energy storage unit, the current energy value of an electric energy storage unit, and the real-time output power value of a wind power generation unit; controlling the pneumatic power unit and / or the electric power unit to output drive force according to the drive demand signal, the current pressure value, and the current energy value; when the electric power unit is outputting drive force, transmitting the electrical energy output by the wind power generation unit to the electric power unit; when the output power of the wind power generation unit is greater than the current power consumption of the electric power unit, transmitting the remaining electrical energy to the electric energy storage unit for storage; when the current pressure value of the compressed air energy storage unit is lower than a preset pressure threshold, shutting down the pneumatic power unit, switching to the electric power unit to output drive force, and generating a replenishment signal; this invention controls the pneumatic power unit by combining drive demand with the remaining states of multiple types of energy storage. The output modes of the electric power unit enable units with different power characteristics to be matched with suitable load conditions, improving the fit between power output and load demand. By prioritizing the direct supply of electrical energy from the wind power generation unit to the electric power unit while the electric power unit is outputting driving force, and then transmitting excess electrical energy to the energy storage unit for storage, the energy conversion loss caused by wind power passing through the energy storage unit can be reduced, improving the immediate utilization efficiency of wind energy and reducing the discharge consumption of the energy storage unit. By automatically switching the power mode and generating a replenishment prompt signal when the current pressure value of the compressed air energy storage unit is lower than a preset threshold, the power interruption caused by energy depletion can be avoided, ensuring the continuous operation of the drive system. Therefore, the method of this invention can realize the coordinated scheduling and dynamic matching of three types of energy: compressed air, electric energy, and wind energy, improving the comprehensive utilization efficiency of multiple energy sources while ensuring the operational stability and adaptability of the drive system. Attached Figure Description

[0064] Figure 1 A flowchart illustrating a gas-electric-wind hybrid energy storage drive coordinated control method provided by the present invention;

[0065] Figure 2 This invention provides a diagram showing the internal cavity structure of the wind collector in a gas-electric-wind hybrid energy storage drive coordinated control method.

[0066] Figure 3This invention provides an architecture block diagram of a composite energy storage drive system in a gas-electric-wind composite energy storage drive coordinated control method.

[0067] Figure 4 This invention provides a block diagram illustrating the control principle of power mode switching in a gas-electric-wind hybrid energy storage drive coordinated control method.

[0068] Figure 5 A block diagram illustrating the power diversion control principle of the wind power generation unit in a gas-electric-wind hybrid energy storage drive coordinated control method provided by the present invention.

[0069] Figure 6 This is a schematic diagram of the structural composition of a gas-electric-wind hybrid energy storage and drive coordinated control system provided by the present invention;

[0070] Figure 7 This is a schematic diagram of the structure of an electronic device provided by the present invention. Detailed Implementation

[0071] This invention proposes a method, system, device, and medium for coordinated control of gas-electric-wind hybrid energy storage drive. The specific embodiments of this invention will be further described in detail below with reference to the accompanying drawings.

[0072] Example 1:

[0073] This invention provides a method for coordinated control of gas-electric-wind hybrid energy storage drive, the flowchart of which is shown below. Figure 1 As shown, this can be applied to a composite energy storage drive system, which includes: a pneumatic power unit, an electric power unit, a compressed air energy storage unit, an electric energy storage unit, and a wind power generation unit. The compressed air energy storage unit is connected to the pneumatic power unit via an air path. The wind power generation unit and the electric energy storage unit are respectively electrically connected to the electric power unit, and the wind power generation unit is also electrically connected to the electric energy storage unit. It may include:

[0074] Step 1: Obtain the drive demand signal, the current pressure value of the compressed air energy storage unit, the current power value of the electric energy storage unit, and the real-time output power value of the wind power generation unit;

[0075] Step 2: Based on the drive demand signal, the current pressure value, and the current power value, control the pneumatic power unit and / or electric power unit to output drive force;

[0076] Step 3: When the power unit outputs driving force, the electrical energy output by the wind power generation unit is transmitted to the power unit. When the output power of the wind power generation unit is greater than the current power consumption of the power unit, the remaining electrical energy is transmitted to the energy storage unit for storage.

[0077] Step 4: When the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold, the pneumatic power unit is shut down and the electric power unit is switched to output driving force and generate a replenishment prompt signal.

[0078] In one implementation, the specific structure and connection relationship of each unit in the above-mentioned composite energy storage drive system can be as follows:

[0079] The pneumatic power unit may include: a pneumatic engine, which internally comprises a piston, connecting rod, and crankshaft; an intake one-way valve is provided at the intake end, an exhaust valve is provided at the exhaust end, and an oil reservoir is provided at the bottom; the pneumatic engine may employ a splash lubrication structure, and the oil reservoir stores lubricating oil; during the high-speed operation of the crankshaft and connecting rod, the lubricating oil in the oil reservoir will be carried up and splashed onto the surfaces of various moving parts such as the cylinder and piston, providing continuous lubrication for all moving parts; the power output end of the pneumatic engine is connected to the differential gear pack of the front drive shaft through a transmission component; and the pneumatic engine relies on the expansion of compressed air to perform work, unlike the high-temperature combustion of fuel or gas internal combustion engines, its exhaust temperature is only about 35°C higher than the ambient temperature, and the overall exhaust temperature usually does not exceed 80°C, which is within the temperature tolerance range of conventional components. Therefore, only a basic exhaust port is required, without the need for additional high-temperature insulation and heat dissipation structures;

[0080] The pneumatic power unit is positioned as an auxiliary power unit, which needs to rely on an external energy replenishment device to supplement compressed air to maintain continuous operation. It has a large output torque and can adapt to the driving needs of high load and complex road conditions. It can also adopt a four-wheel drive architecture with dual power output on the front and rear axles. The pneumatic power unit corresponds to the front drive axle and the electric power unit corresponds to the rear drive axle. The two can output driving force independently or in combination.

[0081] The exhaust end of the pneumatic engine can be connected to the heat dissipation duct of the energy storage unit through an exhaust branch pipe. When the pneumatic power unit operates alone or in conjunction with other units, the low-temperature airflow discharged after the compressed air expands and does work is introduced into the heat dissipation channel of the battery pack through the exhaust branch pipe, passively cooling the battery pack without the need for an additional cooling fan. When the temperature of the energy storage unit is higher than the preset temperature threshold and the pneumatic power unit is not started, the pneumatic power unit can be briefly started to idle and exhaust, using the low-temperature airflow to quickly cool down the battery, adapting to the battery thermal management requirements under high load conditions. Using the low-temperature exhaust airflow to forcibly cool the battery pack can, on the one hand, avoid the superposition of heat generated by battery charging and discharging with the ambient temperature, reducing the safety risks caused by high temperature; on the other hand, it can slow down the rate of chemical side reactions during battery charging and discharging, suppress gas evolution, and effectively extend the service life of the battery.

[0082] The compressed air energy storage unit may include: multiple sets of air storage tanks, each set of air storage tanks being connected to the intake valve of a pneumatic engine via an air pipe, and a control valve being installed on the air pipe;

[0083] The electric power unit may include an electric motor, the power output end of which is connected to the differential gearbox of the rear drive shaft for outputting electric driving force.

[0084] The energy storage unit may include: multiple battery packs, which are respectively located on the left and right sides of the pneumatic power unit and electrically connected to the motor through connecting lines; in this embodiment, the rated voltage of the battery packs is preferably 60V or above, and they are used to store electrical energy and supply power to the electric power unit.

[0085] Each battery pack is connected in parallel to the power supply circuit to maintain stable power supply voltage and improve current output capability under heavy load conditions. Under normal operating conditions, continuous energy replenishment of the wind power generation unit can reduce the frequency of battery charge and discharge cycles, delay battery performance degradation, and extend the overall service life of the energy storage unit.

[0086] The wind power generation unit includes a funnel-shaped wind collector, and the internal cavity structure diagram of the wind collector is shown below. Figure 2 As shown, the system includes a wind turbine 1, wind turbine blades 2, and a generator 3, with the generator equipped with a rectifier and regulator. The wind collector has an air inlet 4 at its front end and an air collection outlet 5 at its rear end. The main shaft of the wind turbine is connected to the generator via a drive mechanism, and the generator's power output is connected to the system's power supply circuit via the rectifier and regulator. An adjustable-opening guide damper is installed at the air inlet of the wind collector, and the opening of the guide damper is controlled by a mode switching controller. Under high-load drive conditions, the controller controls the guide damper to open to its maximum opening, increasing the wind energy capture to ensure power supply to the power side. Electricity capacity; when the energy storage unit is above the preset full charge threshold at medium and high speed drive levels, the controller controls the guide damper to close to the preset low opening degree to reduce operating wind resistance; when the compressed air energy storage unit is close to the pressure threshold and is about to switch to electric drive, the controller controls the guide damper to open in advance to increase the wind power output power in advance, ensuring a smooth power supply transition before and after mode switching. By linking the wind collector opening degree with the power mode, the essence is to incorporate the wind energy collection link into the vehicle energy dispatch closed loop, with the aim of balancing wind resistance, power generation efficiency and mode switching smoothness;

[0087] The rectifier regulator integrates multiple functions such as rectification, voltage regulation, and power generation regulation. On the one hand, it can convert the AC power output from the generator into DC power through a bridge rectifier circuit and connect it to the power supply circuit. On the other hand, it can dynamically adjust the output voltage and power generation according to the power demand and generator speed, stabilizing the output voltage within the rated operating range and avoiding long-term full-load operation of the generator. When the system operates at a constant speed for a long time and the wind power output is continuously excessive, the rectifier regulator will stabilize the output voltage at a preset threshold. If the voltage exceeds the set threshold, the rectifier regulator will automatically cut off the charging circuit to the energy storage unit, and the generator will switch to an unloaded running state to avoid overcharging and damage to the battery, which is conducive to ensuring the operational reliability and service life of the power generation unit.

[0088] The exhaust end of the air collector can be set towards the rear of the system. The airflow after passing through the impeller is discharged backward through the air collector, which acts on the external environment to form a reverse thrust, which can help reduce the operating energy consumption of the drive system and further improve energy utilization efficiency.

[0089] The specific architecture block diagram of the composite energy storage drive system can be as follows: Figure 3 As shown, the compressed air energy storage unit is connected to the pneumatic power unit through an air passage, and is used to deliver compressed air to the pneumatic power unit to provide a power source. The wind power generation unit and the electric energy storage unit are electrically connected to the electric power unit through circuits, and the wind power generation unit is also electrically connected to the electric energy storage unit, thus forming a multi-energy drive network in which compressed air power transmission and electric energy transmission run in parallel.

[0090] In this implementation, a power energy storage architecture combining compressed air energy storage units with pneumatic power units and electrical energy storage units with electric power units is adopted. This architecture leverages the pneumatic power unit's sufficient low-speed output torque and short compressed air refueling time to adapt to low-speed and high-load starting conditions, while the electric power unit's stable operation and high control precision adapt to medium- and high-speed stable conditions. This allows units with different power characteristics to be matched to suitable load scenarios. A wind power generation unit is added as an auxiliary refueling branch on this architecture, prioritizing wind power supply to the electric power unit and allocating excess wind power to the electric power unit. The scheduling method of storing wind power in the energy storage unit can reduce the conversion loss caused by the charging and discharging of wind power through the energy storage unit, improve the immediate utilization efficiency of wind power, and at the same time reduce the discharge consumption and charging and discharging cycle frequency of the energy storage unit, effectively extending the continuous operation time of the system. In addition, the independent gas transmission network and circuit transmission network form a redundant supply structure. With the corresponding status monitoring and mode switching logic, it can smoothly switch to another power system to continuously output driving force when the reserve of a single energy storage medium is insufficient, which can avoid power interruption and improve the reliability of system operation.

[0091] In one implementation, the drive demand signal in step 1 above can come from the input command of the operating terminal (such as the accelerator pedal input command), the current pressure value can be obtained by the pressure sensor set on the air tank, the current power value can be obtained by the power detection module of the battery pack, and the real-time output power value can be obtained by the power detection module at the rectifier regulator.

[0092] In one implementation, step 2 above, which involves controlling the pneumatic power unit and / or electric power unit to output driving force based on the driving demand signal, the current pressure value, and the current power value, may include:

[0093] The current drive level is determined based on the drive demand signal;

[0094] When the current drive level is determined to be low speed drive level and the current pressure value is higher than the preset working pressure threshold, the pneumatic power unit is controlled to output driving force, and the electric power unit is in standby state.

[0095] When the current drive level is determined to be a medium-high speed drive level and the current power value is higher than the preset working power threshold, the electric power unit is controlled to output driving force, and the pneumatic power unit is in standby mode.

[0096] The control principle block diagram for power mode switching can be shown as follows: Figure 4 As shown, the driving demand signal, the pressure signal of the gas storage tank collected by the pressure sensor, and the battery power signal collected by the power sensor are used as inputs to the mode switching controller. The controller combines the preset driving level judgment rules and energy storage state threshold to complete the calculation and generate control commands, and output corresponding control signals to the pneumatic power unit and the electric power unit respectively, thereby realizing the adaptive switching of single power drive or dual power cooperative drive mode.

[0097] The preset pressure and power thresholds in the mode switching controller can be set with dynamic correction coefficients, which are linked to the real-time output power of the wind power generation unit. When the real-time output power of the wind power is higher than the preset power threshold, the switching pressure threshold of the compressed air energy storage unit and the switching power threshold of the electric energy storage unit are lowered to extend the running time of the current power mode. When the real-time output power of the wind power is zero, the two switching thresholds are raised to trigger the mode switching in advance and avoid power interruption due to energy depletion. Through the dynamic correction of the switching thresholds by the wind power, the energy storage protection strategy can be dynamically adjusted based on the wind energy replenishment capability to adapt to the operating requirements under different wind conditions.

[0098] In this implementation, when the current drive level is determined to be a medium-high speed drive level and the current battery level is higher than a preset working battery level threshold, controlling the electric power unit to output driving force, and after the pneumatic power unit is in standby mode, it may further include:

[0099] When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination.

[0100] The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of the pneumatic power unit and the electric power unit respectively. This condition can cope with complex driving scenarios such as muddy roads and mountain slopes, and can make up for the power gap by relying on the high torque output characteristics of the pneumatic power unit. In medium and low load scenarios such as conventional paved roads, the electric power unit alone drives the vehicle, so as to balance the power performance and operating economy under different conditions. The overall driving process is driven by electric drive as the core power source.

[0101] In this implementation, the process of determining the current drive level based on the drive demand signal may include:

[0102] Based on the drive demand signal, extract the demand power value;

[0103] The required power value is compared one by one with the preset low-speed power threshold and high-speed power threshold;

[0104] When the required power value is less than or equal to the low-speed power threshold, it is determined to be a low-speed drive level;

[0105] When the required power value is greater than the low-speed power threshold and less than or equal to the high-speed power threshold, it is determined to be a medium-high speed drive level;

[0106] When the required power value is greater than the high-speed power threshold, it is determined to be a high-load drive level;

[0107] In addition to the required power value, the determination of the high load drive level can also be comprehensively verified by combining three types of working condition parameters: driving speed, slope gradient, and road mud level. When the road slope exceeds the preset slope threshold or the road mud level reaches the preset level, even if the required power value does not reach the high speed power threshold, it can be determined as a high load drive level and the dual power coordinated output can be activated, thereby improving the power redundancy under complex road conditions.

[0108] In the above implementation, by dividing the drive demand into three levels—low speed, medium-high speed, and high load—and combining the dual thresholds of compressed air energy storage pressure and electrical energy storage capacity for power mode determination, the pneumatic power unit and the electric power unit can be adapted to operating conditions that match their power characteristics. This fully leverages the respective advantages of the pneumatic power unit's sufficient low-speed torque output and the electric power unit's stable operating efficiency at medium-high speeds, avoiding the inefficient energy consumption of a single power form under unsuitable conditions and improving the overall energy utilization efficiency of the system. Simultaneously, multi-dimensional parameters such as drive demand signal, pressure detection signal, and energy detection signal are used as models. The switching controller operates based on input parameters rather than solely on a single load parameter. This allows it to consider the remaining state of both types of energy storage media during power dispatch, preventing excessive consumption of a single energy storage medium and ensuring the stability of continuous system operation. For high-load conditions exceeding the rated output of a single power unit, a control strategy of coordinated output from dual power units is adopted. This effectively enhances the system's peak power output capability, expands the system's adaptability to high-load conditions, and the entire set of graded judgment and adaptive switching control logic can be automatically executed by the controller. This enables smooth transitions between different power modes and reduces power fluctuations during condition switching.

[0109] In one implementation, step 3, where the electric power unit outputs driving force, involves transmitting the electrical energy output by the wind power generation unit to the electric power unit, and may include:

[0110] Obtain the current power consumption of the power unit;

[0111] The real-time output power of the wind power generation unit is compared with the current power consumption;

[0112] If the real-time output power is greater than or equal to the current power consumption, the wind power generation unit supplies full power to the electric power unit, and the excess power is sent to the energy storage unit for storage. When the wind power output power exceeds the power consumption of the electric power unit, the remaining power is preferentially used to charge one set of batteries, while the other set of batteries remains in standby and does not participate in charging. When the charging battery set reaches the full charge threshold, it automatically switches to the other set of batteries for charging. The two sets of batteries take turns charging and discharging to avoid both sets of batteries being in a state of frequent shallow charging and discharging at the same time, thereby reducing the cycle degradation rate of the batteries and extending their overall service life.

[0113] If the real-time output power is less than the current power consumption, the wind power generation unit and the energy storage unit will jointly supply power to the electric power unit.

[0114] The power diversion control principle block diagram of the wind power generation unit is as follows: Figure 5As shown, the electrical energy output by the wind power generation unit is connected to the energy distribution controller. The controller follows the core logic of prioritizing the supply to the power load and storing the remaining electricity in the energy storage unit. It compares the real-time output power of the wind power with the current power consumption of the power unit in real time, and dynamically adjusts the power distribution ratio between the power end and the energy storage end, thereby improving the comprehensive utilization efficiency of wind energy while ensuring power supply.

[0115] In addition, when the aerodynamic unit outputs driving force independently, all the electrical energy output by the wind power generation unit is sent to the battery pack for storage via the rectifier and regulator to replenish the power of the energy storage unit.

[0116] In the above implementation, by adopting a wind power diversion and dispatch strategy that prioritizes supplying power to the load and stores surplus electricity in the energy storage unit, the electricity output from the wind power generation unit is preferentially and directly transmitted to the power unit during its operation. This reduces the charging and discharging conversion losses caused by storing wind power in the energy storage unit and then discharging it to the load, effectively improving the immediate utilization efficiency of wind energy. Simultaneously, by comparing the real-time output power of the wind power with the current power consumption of the power unit and dynamically adjusting the power allocation ratio, a stable power supply path can be formed regardless of whether the wind power output meets the load demand, fully utilizing clean energy when wind power is abundant. Direct power supply and synchronous replenishment of excess power to the energy storage unit ensure the continuity and stability of power supply from the electric power unit. In addition, when the pneumatic power unit operates alone, all wind power is delivered to the energy storage unit for storage, which can cover the wind energy recovery and utilization under all operating conditions of the system, avoid the waste of wind energy under non-electric operating conditions, continuously replenish the energy reserves of the energy storage unit, reduce the system's dependence on external power supply, effectively extend the overall continuous operating time of the system, and the entire diversion control logic is automatically executed by the energy diversion controller without manual intervention, and the control logic is clear and reliable.

[0117] In one implementation, after the step of transmitting the remaining electrical energy to the energy storage unit for storage when the output power of the wind power generation unit is greater than the current power consumption of the electric power unit, it may further include:

[0118] When the current power value of the energy storage unit is lower than the preset low power threshold, the electric power unit is shut down, and the pneumatic power unit is switched to output driving force and generate a charging prompt signal.

[0119] This approach avoids performance degradation of the energy storage unit due to over-discharge, effectively extending the unit's lifespan. Simultaneously, the automatic switching of power modes ensures continuous power output even in low-power conditions, preventing power interruptions. The generated charging alerts promptly remind operators to replenish power, enhancing system reliability and ease of maintenance.

[0120] In one implementation, after the step of transmitting the electrical energy output by the wind power generation unit to the electric power unit while the electric power unit is outputting driving force, the method may further include:

[0121] When the pneumatic power unit outputs driving force independently, all the electrical energy output by the wind power generation unit is controlled to be delivered to the energy storage unit for storage.

[0122] In this implementation, by controlling the wind power generation unit to send all the electrical energy output by the wind power unit to the energy storage unit while the aerodynamic power unit outputs driving force independently, it can cover the wind energy recovery and utilization under all operating conditions of the system, avoid the idle waste of wind energy resources under aerodynamic drive conditions, continuously replenish the energy storage unit, gradually increase the energy storage margin on the electric side, reduce the system's dependence on external power supply, and complement the strategy of prioritizing wind power supply to the power load under electric drive conditions, thus building a complete wind energy dispatching system under all operating conditions, which is conducive to improving the overall energy utilization efficiency of multi-energy drive systems.

[0123] In summary, this invention addresses the challenges of existing hybrid drive systems in simultaneously achieving zero-emission operation, low operating costs, and efficient adaptability to multiple operating conditions. Furthermore, wind-assisted energy replenishment generally suffers from a single energy utilization path, high conversion losses, and insufficient coverage across all operating conditions. To address these issues, this invention proposes a gas-electric-wind hybrid energy storage drive collaborative control method. This method constructs a parallel drive architecture with both compressed air and electrical energy as the two power sources and dual energy storage. It incorporates a power mode hierarchical switching logic that links drive level determination with energy storage status thresholds, a full-condition energy scheduling strategy that prioritizes wind power supply to the load and recovers and stores remaining electricity, and a fault-tolerant operation mechanism with automatic low-level energy storage switching and status alerts. This approach effectively improves power adaptability and multi-energy utilization efficiency under different load conditions while achieving zero-emission operation, reducing system dependence on external energy replenishment and overall operating costs, and ensuring the continuity and reliability of the drive system operation.

[0124] Example 2:

[0125] Based on the same inventive concept, this invention also provides a gas-electric-wind hybrid energy storage and drive coordinated control system, the structural composition of which is shown in the schematic diagram below. Figure 6 As shown, it includes:

[0126] The data acquisition module is used to acquire drive demand signals, the current pressure value of the compressed air energy storage unit, the current power value of the electric energy storage unit, and the real-time output power value of the wind power generation unit.

[0127] The drive control module is used to control the pneumatic power unit and / or electric power unit to output drive force according to the drive demand signal, the current pressure value and the current power value;

[0128] The power transmission module is used to transmit the electrical energy output by the wind power generation unit to the power power unit when the power power unit outputs driving force, and to transmit the remaining electrical energy to the power storage unit when the output power of the wind power generation unit is greater than the current power consumption of the power power unit.

[0129] The mode switching module is used to shut down the pneumatic power unit and switch to the electric power unit to output driving force and generate a replenishment prompt signal when the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold.

[0130] In one implementation, the drive control module may include:

[0131] The level determination submodule is used to determine the current drive level based on the drive demand signal;

[0132] The pneumatic drive submodule is used to control the pneumatic power unit to output driving force when the current drive level is determined to be a low-speed drive level and the current pressure value is higher than the preset working pressure threshold, while the electric power unit is in standby mode.

[0133] The electric drive submodule is used to control the electric power unit to output driving force when the current drive level is determined to be a medium-high speed drive level and the current power value is higher than the preset working power threshold, while the pneumatic power unit is in standby mode.

[0134] In one implementation, the cooperative control system may further include: a hybrid drive submodule, specifically used for:

[0135] When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination.

[0136] The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of each of the pneumatic power unit and the electric power unit.

[0137] In one implementation, the level determination submodule may include:

[0138] A power extraction unit is used to extract the required power value based on the drive demand signal;

[0139] The power comparison unit is used to compare the required power value with the preset low-speed power threshold and high-speed power threshold one by one.

[0140] The low-speed determination unit is used to determine the low-speed drive level when the required power value is less than or equal to the low-speed power threshold.

[0141] The medium-high speed determination unit is used to determine the driving level as medium-high speed when the required power value is greater than the low speed power threshold and less than or equal to the high speed power threshold.

[0142] The high load determination unit is used to determine the high load drive level when the required power value is greater than the high speed power threshold.

[0143] In one implementation, the cooperative control system may further include: a pneumatic switching module, specifically used for:

[0144] When the current power value of the energy storage unit is lower than the preset low power threshold, the electric power unit is shut down, and the pneumatic power unit is switched to output driving force and generate a charging prompt signal.

[0145] In one implementation, the power transmission module may include:

[0146] The power acquisition submodule is used to acquire the current power consumption of the power unit;

[0147] The power comparison submodule is used to compare the real-time output power of the wind power generation unit with the current power consumption;

[0148] The wind power supply module is used to supply full power to the electric power unit through the wind power generation unit when the real-time output power is greater than or equal to the current power consumption, and the excess power is sent to the energy storage unit for storage.

[0149] A collaborative power supply module is used to supply power to the electric power unit through the wind power generation unit and the energy storage unit when the real-time output power is less than the current power consumption.

[0150] In one implementation, the collaborative control system may further include: an energy storage module, specifically used for:

[0151] When the pneumatic power unit outputs driving force independently, all the electrical energy output by the wind power generation unit is controlled to be delivered to the energy storage unit for storage.

[0152] Example 3:

[0153] like Figure 7As shown, the present invention also provides an electronic device, which may be a computer device, a microcontroller device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, processor, and transceiver component are connected via a bus; the memory can be used to store executable programs, and an exemplary executable program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, which can be accessed and / or modified when instructions are executed.

[0154] The processor may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and it is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in the storage medium to realize the corresponding method flow or corresponding function, so as to realize the steps of the gas-electric-wind composite energy storage drive coordinated control method in the above embodiments.

[0155] Example 4:

[0156] Based on the same inventive concept, this invention also provides a readable storage medium, specifically an electronic device readable storage medium (Memory). This readable storage medium is a memory device within an electronic device used to store programs and data. It is understood that the storage medium here can include both built-in storage media within the electronic device and extended storage media supported by the electronic device. The storage medium provides storage space, which stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more executable programs (including program code). It should be noted that the storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk storage device. Loading and executing one or more instructions stored in the storage medium by the processor can implement the steps of the gas-electric-wind hybrid energy storage drive coordinated control method described in the above embodiments.

[0157] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0158] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0159] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0160] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the present application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims of the present application.

Claims

1. A method for coordinated control of gas-electric-wind hybrid energy storage drive, applied to a hybrid energy storage drive system, the hybrid energy storage drive system comprising: The system comprises a pneumatic power unit, an electric power unit, a compressed air energy storage unit, an electric energy storage unit, and a wind power generation unit. The compressed air energy storage unit is connected to the pneumatic power unit via an air passage. The wind power generation unit and the electric energy storage unit are electrically connected to the electric power unit, respectively. The system is characterized by including: Acquire drive demand signals, current pressure values ​​of compressed air energy storage units, current energy values ​​of electrical energy storage units, and real-time output power values ​​of wind power generation units; Based on the drive demand signal, the current pressure value, and the current power value, control the pneumatic power unit and / or electric power unit to output drive force; When the power unit outputs driving force, the electrical energy output by the wind power generation unit is transmitted to the power unit. When the output power of the wind power generation unit is greater than the current power consumption of the power unit, the remaining electrical energy is transmitted to the energy storage unit for storage. When the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold, the pneumatic power unit is shut down, and the electric power unit is switched to output driving force and generate a replenishment prompt signal.

2. The method as described in claim 1, characterized in that, The step of controlling the pneumatic power unit and / or electric power unit to output driving force based on the driving demand signal, the current pressure value, and the current power value includes: The current drive level is determined based on the drive demand signal; When the current drive level is determined to be low speed drive level and the current pressure value is higher than the preset working pressure threshold, the pneumatic power unit is controlled to output driving force, and the electric power unit is in standby state. When the current drive level is determined to be a medium-high speed drive level and the current battery level is higher than the preset working battery level threshold, the electric power unit is controlled to output driving force, and the pneumatic power unit is in standby mode.

3. The method as described in claim 2, characterized in that, Also includes: When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination. The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of each of the pneumatic power unit and the electric power unit.

4. The method as described in claim 3, characterized in that, The step of determining the current drive level based on the drive demand signal includes: Based on the drive demand signal, extract the demand power value; The required power value is compared one by one with the preset low-speed power threshold and high-speed power threshold; When the required power value is less than or equal to the low-speed power threshold, it is determined to be a low-speed drive level; When the required power value is greater than the low-speed power threshold and less than or equal to the high-speed power threshold, it is determined to be a medium-high speed drive level; When the required power value is greater than the high-speed power threshold, it is determined to be a high-load drive level.

5. The method as described in claim 1, characterized in that, Also includes: When the current power value of the energy storage unit is lower than the preset low power threshold, the electric power unit is shut down, and the pneumatic power unit is switched to output driving force and generate a charging prompt signal.

6. The method as described in claim 1, characterized in that, The step of transmitting electrical energy output by the wind power generation unit to the electric power unit while the electric power unit is outputting driving force includes: Obtain the current power consumption of the power unit; The real-time output power of the wind power generation unit is compared with the current power consumption; If the real-time output power is greater than or equal to the current power consumption, the wind power generation unit supplies the electric power unit with the full amount of power, and the excess power is sent to the energy storage unit for storage. If the real-time output power is less than the current power consumption, the wind power generation unit and the energy storage unit will jointly supply power to the electric power unit.

7. The method as described in claim 1, characterized in that, Also includes: When the pneumatic power unit outputs driving force independently, all the electrical energy output by the wind power generation unit is controlled to be delivered to the energy storage unit for storage.

8. A gas-electric-wind hybrid energy storage drive coordinated control system, characterized in that, include: The data acquisition module is used to acquire drive demand signals, the current pressure value of the compressed air energy storage unit, the current power value of the electric energy storage unit, and the real-time output power value of the wind power generation unit. The drive control module is used to control the pneumatic power unit and / or electric power unit to output drive force according to the drive demand signal, the current pressure value and the current power value; The power transmission module is used to transmit the electrical energy output by the wind power generation unit to the power power unit when the power power unit outputs driving force, and to transmit the remaining electrical energy to the power storage unit when the output power of the wind power generation unit is greater than the current power consumption of the power power unit. The mode switching module is used to shut down the pneumatic power unit and switch to the electric power unit to output driving force and generate a replenishment prompt signal when the current pressure value of the compressed air energy storage unit is lower than the preset pressure threshold.

9. The system as described in claim 8, characterized in that, The drive control module includes: The level determination submodule is used to determine the current drive level based on the drive demand signal; The pneumatic drive submodule is used to control the pneumatic power unit to output driving force when the current drive level is determined to be a low-speed drive level and the current pressure value is higher than the preset working pressure threshold, while the electric power unit is in standby mode. The electric drive submodule is used to control the electric power unit to output driving force when the current drive level is determined to be a medium-high speed drive level and the current power value is higher than the preset working power threshold, while the pneumatic power unit is in standby mode.

10. The system as described in claim 9, characterized in that, The collaborative control system further includes: a hybrid drive submodule, specifically used for: When the current drive level is determined to be a high-load drive level, the pneumatic power unit and the electric power unit are controlled to output drive force in coordination. The condition for determining the high-load drive level is that the drive power demand is greater than the rated maximum output power of each of the pneumatic power unit and the electric power unit.

Images