CN115303087A - Rotating speed active disturbance rejection control system for hybrid fuel cell vehicle in working condition transition stage - Google Patents
Rotating speed active disturbance rejection control system for hybrid fuel cell vehicle in working condition transition stage Download PDFInfo
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- CN115303087A CN115303087A CN202210749133.3A CN202210749133A CN115303087A CN 115303087 A CN115303087 A CN 115303087A CN 202210749133 A CN202210749133 A CN 202210749133A CN 115303087 A CN115303087 A CN 115303087A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
- B60L2250/28—Accelerator pedal thresholds
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a rotating speed active disturbance rejection control system of a hybrid fuel cell automobile in a working condition transition stage, which comprises a control unit, a storage battery, a super capacitor, a fuel cell stack, an air compressor, an energy management unit and an accelerator pedal sensor, wherein the control unit is used for controlling the storage battery to be in a working condition transition state; the accelerator pedal sensor is used for detecting the stroke of an accelerator pedal; the control unit judges a first catastrophe point of the travel change of the accelerator pedal according to the travel of the accelerator pedal acquired by the accelerator pedal sensor, generates a first transition control signal when the first catastrophe point is generated, and sends the first transition control signal to the energy management unit; the energy management unit is electrically connected with the control unit, the storage battery, the super capacitor and the fuel cell stack; the energy management unit is used for acquiring the first transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal. The invention can enable the fuel cell to smoothly and transitionally eliminate the disturbance caused by the sudden change of the signal when the sudden change of the control signal occurs.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a rotating speed active disturbance rejection control system of a hybrid fuel cell automobile in a working condition transition stage.
Background
The hydrogen fuel cell automobile is one of the important directions for the development of new energy automobiles. Hydrogen fuel cell vehicles introduce hydrogen and oxygen into a fuel cell stack, and generate electrical energy as the primary energy of the vehicle through the reaction of the hydrogen and oxygen.
In the prior art, an air supply system of a fuel cell pressurizes air through an air compressor, and when a fuel cell automobile is used, the air flow of the air compressor is generally controlled to adapt to the current vehicle working condition. During the transition period of the operating condition switching, the power output of the fuel cell needs to be changed correspondingly. That is, if the power required by the fuel cell to the current operating condition of the vehicle is too large, energy is wasted, and if the power is too small, the dynamic property is deteriorated. When the power demand suddenly changes, the output power of the fuel cell also needs to be adjusted correspondingly. Sudden changes in fuel cell output power require corresponding adjustments in the amount of compression of the air compressor. When the air output of the air compressor is increased, the air compressor can be realized by increasing the rotating speed of the air compressor or increasing the opening degree of an air inlet valve, and severe fluctuation of the air compressor can be caused in any mode.
Therefore, how to avoid sudden change of the air compressor when sudden change of the power demand occurs is one of the important problems to be solved in the art.
Disclosure of Invention
The invention aims to provide a rotating speed active disturbance rejection control system of a hybrid fuel cell automobile in a working condition transition stage, which solves the defects in the prior art, can enable a fuel cell to be transited stably when a control signal is suddenly changed, eliminates disturbance generated due to signal sudden change, prevents disturbance generated during working condition transition, and enables an air compressor to be transited stably.
The invention provides a rotating speed active disturbance rejection control system of a hybrid fuel cell automobile in a working condition transition stage, which comprises a control unit, a storage battery, a super capacitor, a fuel cell stack and an air compressor, wherein the storage battery is connected with the super capacitor; wherein, the first and the second end of the pipe are connected with each other,
the system also comprises an energy management unit and an accelerator pedal sensor;
the accelerator pedal sensor is used for detecting an accelerator pedal stroke;
the control unit judges a first catastrophe point of the travel change of the accelerator pedal according to the travel of the accelerator pedal acquired by the accelerator pedal sensor, generates a first transition control signal when the first catastrophe point is generated, and sends the first transition control signal to the energy management unit;
the energy management unit is electrically connected with the control unit, the storage battery, the super capacitor and the fuel cell stack; the energy management unit is used for acquiring a first transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal.
The system for controlling the rotational speed active disturbance rejection of the hybrid fuel cell vehicle in the transient stage of the operating condition of the vehicle, as described above, may optionally obtain the first abrupt change point by:
s11, the control unit acquires the travel of an accelerator pedal in real time;
s12, judging whether the variation of the current accelerator pedal stroke and the accelerator pedal stroke at the previous moment exceeds 10% of the maximum accelerator pedal stroke; if yes, the current moment is a first mutation point; if not, the current moment is not the first mutation point.
The system for controlling the rotational speed active disturbance rejection of the hybrid fuel cell vehicle in the transient stage of the working condition of the vehicle, wherein optionally, the first transient control signal comprises a sudden change degree and a sudden change direction;
the sudden change degree is the variable quantity between the current accelerator pedal stroke and the accelerator pedal stroke at the previous moment; the abrupt change direction is a direction in which the travel of the accelerator pedal increases or decreases from a previous time to a present time.
The system for controlling the rotational speed active disturbance rejection of the hybrid fuel cell vehicle in the working condition transition stage optionally further comprises a first electric quantity detection unit and a second electric quantity detection unit;
the first electric quantity detection unit is used for detecting the electric quantity of the storage battery in real time;
the second electric quantity detection unit is used for detecting the electric quantity of the super capacitor in real time;
the first electric quantity detection unit and the second electric quantity detection unit are electrically connected with the energy management unit;
the energy management unit performs energy management by the following method:
s21, identifying the mutation direction, and if the mutation direction is the increasing direction, executing the step S22; if the abrupt change direction is the decreasing direction, executing step S24;
s22, judging whether the electric quantity of the super capacitor is larger than a first set value or not, and if so, executing a step S221; if not, executing step S23;
s221, increasing the discharge capacity of the super capacitor according to the sudden change; in the next time period, the power supply power of the fuel cell is gradually increased, and the power supply power of the super capacitor is reduced;
s23, judging whether the electric quantity of the storage battery is larger than a second set value, and if so, executing the step S231; if not, go to step S232;
s231, increasing the discharge capacity of the storage battery according to the sudden change; and in the next period, the power supply power of the fuel cell is gradually increased, and the power supply power of the super capacitor is reduced
S232, increasing the power supply power of the super capacitor and the storage battery in proportion according to the abrupt change, the electric quantity of the super capacitor and the electric quantity of the storage battery, increasing the power supply power of the fuel cell in the next time period, and reducing the power supply power of the super capacitor and the storage battery in proportion;
s24, judging whether the electric quantity of the super capacitor is smaller than a third set value, if so, executing a step S341; if not, executing step S25;
s241, controlling a fuel cell to charge the super capacitor according to the abrupt change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the super capacitor;
s25, judging whether the electric quantity of the storage battery is smaller than a fourth set value, and if so, executing a step S251; if not, go to step S252;
s251, controlling the fuel cell to charge the storage battery according to the sudden change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the storage battery;
and S252, controlling a fuel cell to simultaneously charge the super capacitor and the storage battery according to the abrupt change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously reducing the charging amount to the storage battery and the super capacitor in proportion.
The system for controlling the rotational speed active disturbance rejection of the hybrid fuel cell vehicle in the working condition transition stage is described above, wherein optionally, the third set value is smaller than the first set value;
the fourth set value is smaller than the second set value.
The rotating speed active disturbance rejection control system for the hybrid fuel cell automobile in the working condition transition stage is characterized in that the third set value is 10% to 20% of the maximum capacity of the super capacitor;
the first set value is 60% to 80% of the maximum capacity of the super capacitor;
the fourth set value is 20% to 30% of the maximum electric quantity of the storage battery;
the two set values are 70% to 90% of the maximum electric quantity of the storage battery.
The system for controlling the rotating speed active disturbance rejection of the hybrid fuel cell vehicle in the working condition transition stage optionally further comprises a rotating speed sensor;
the rotating speed sensor is used for detecting the rotating speed of the air compressor;
the control unit is electrically connected with the rotating speed sensor;
the control unit is used for generating a feedback control signal according to the rotating speed sensor so as to realize the adjustment of the air compressor.
The system for controlling the rotation speed active disturbance rejection of the hybrid fuel cell vehicle in the working condition transition stage optionally further comprises a brake pedal sensor;
the brake pedal sensor is used for detecting the stroke of a brake pedal;
the control unit is also used for judging a second catastrophe point of the travel change of the brake pedal sensor according to the travel of the brake pedal sensor, generating a second transition control signal when the second catastrophe point is generated, and sending the second transition control signal to the energy management unit;
the energy management unit is further used for acquiring a second transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal.
Compared with the prior art, the invention monitors the travel of the accelerator pedal in real time, detects the sudden change point of the travel of the accelerator pedal, and increases or reduces the power supply power or the charging power of the storage battery or the super capacitor when the travel of the accelerator pedal is suddenly changed, thereby eliminating the sudden change of the power of the air compressor caused by the sudden change of the working condition while ensuring the power, and preventing the sudden change caused by the change of the working condition. In specific implementation, the gradual change of the power of the fuel cell stack and the gradual change of the storage battery or the super capacitor in the next period of the catastrophe point are controlled, so that the power change process of the fuel cell stack is smooth.
Drawings
FIG. 1 is a block diagram of a rotational speed active disturbance rejection control system of a hybrid fuel cell vehicle in a transition stage of working conditions;
FIG. 2 is a method for determining a first mutation point according to the present invention;
fig. 3 is a control method proposed by the present invention after the first mutation point is monitored.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The embodiment of the invention comprises the following steps: as shown in fig. 1, the embodiment provides a rotational speed active disturbance rejection control system for a hybrid fuel cell vehicle in a working condition transition stage, which includes a control unit, a storage battery, a super capacitor, a fuel cell stack, and an air compressor; the system also comprises an energy management unit and an accelerator pedal sensor. In a specific implementation, the control unit may be a vehicle controller. The storage battery is used for supplying power to the electric accessories of the whole vehicle when the fuel cell is not started; powering the air compressor upon start-up of the fuel cell; when the fuel cell is operated, the fuel cell outputs electric energy together with the fuel cell or the fuel cell charges the storage battery. The super capacitor is used for supplying power to the electric accessories of the whole vehicle when the fuel cell is not started; powering the air compressor upon start-up of the fuel cell; when the fuel cell works, the fuel cell outputs electric energy together with the fuel cell or the fuel cell charges the super capacitor, and the super capacitor is also used for realizing energy recovery through a braking energy recovery device when braking. The air compressor is used to supply air to the fuel cell stack, which is used to react hydrogen and oxygen to generate the primary energy of the vehicle.
Specifically, the accelerator pedal sensor is used to detect an accelerator pedal stroke. The control unit judges a first catastrophe point of the travel change of the accelerator pedal according to the travel of the accelerator pedal acquired by the accelerator pedal sensor, generates a first transition control signal when the first catastrophe point is generated, and sends the first transition control signal to the energy management unit. For the working condition transition phase, the change of the accelerator pedal is usually accompanied, so in the application, the identification of the transition phase can be realized by monitoring the sudden change condition of the accelerator pedal. It should be noted that in the application, only when the stroke of the accelerator pedal or the brake pedal is suddenly changed, the sudden change of the output power of the fuel cell stack is enough to cause the disturbance of the air compressor. Therefore, the control is only required to be performed when the accelerator pedal stroke or the brake pedal stroke changes suddenly, that is, in the application, the transition stage refers to the sudden change of the accelerator pedal stroke or the brake pedal stroke.
In practice, the control unit obtains the first mutation point by the following method:
and S11, the control unit acquires the travel of the accelerator pedal in real time.
S12, judging whether the travel variation of the current accelerator pedal and the travel variation of the accelerator pedal at the previous moment exceed 10% of the maximum travel of the accelerator pedal; if yes, the current moment is a first mutation point; if not, the current time is not the first mutation point.
The energy management unit is electrically connected with the control unit, the storage battery, the super capacitor and the fuel cell stack; the energy management unit is used for acquiring a first transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the first transition control signal. In specific implementation, the communication between the energy management unit and the control unit is realized through a bus.
In particular implementations, the first transition control signal includes a degree of mutation and a direction of mutation; in practical application, the stroke of the accelerator pedal is suddenly changed, and the stroke is suddenly increased and suddenly reduced. Therefore, to enable both of the above cases. The sudden change degree is the variable quantity between the current accelerator pedal stroke and the accelerator pedal stroke at the previous moment; the abrupt change direction is a direction in which the travel of the accelerator pedal increases or decreases from a previous time to a present time. The sudden change direction is a working condition that the travel of the accelerator pedal is increased from the previous moment to the current moment, namely the sudden acceleration, and the sudden change direction is a working condition that the travel of the accelerator pedal is suddenly reduced from the previous moment to the current moment, namely the sudden reduction acceleration.
In specific implementation, in order to realize control of the transition stage, the control method further comprises a first electric quantity detection unit and a second electric quantity detection unit. Specifically, the first electric quantity detection unit is used for detecting the electric quantity of the storage battery in real time; the second electric quantity detection unit is used for detecting the electric quantity of the super capacitor in real time.
More specifically, the first electric quantity detection unit and the second electric quantity detection unit are both electrically connected with the energy management unit; in a specific implementation, the communication between the energy management unit and the first electric quantity detection unit and the communication between the energy management unit and the second electric quantity detection unit may be implemented through a bus.
Specifically, the energy management unit performs energy management by the following method:
s21, identifying the mutation direction, and if the mutation direction is the increasing direction, executing the step S22; if the abrupt change direction is the decreasing direction, executing step S24; therefore, the charging and discharging of the super capacitor or the storage battery can be accurately controlled according to different mutation directions.
S22, judging whether the electric quantity of the super capacitor is larger than a first set value or not, and if so, executing a step S221; if not, step S23 is performed. Specifically, because the charge-discharge efficiency of the super capacitor is greater than that of the storage battery, when the super capacitor is used specifically, the super capacitor is preferentially used for charge and discharge so as to ensure the efficiency during energy conversion, and the energy-saving effect is favorably ensured.
S221, increasing the discharge capacity of the super capacitor according to the sudden change; in the next time period, the power supply power of the fuel cell is gradually increased, and the power supply power of the super capacitor is reduced; in specific implementation, the discharge amount of the super capacitor is proportional to the abrupt change amount, so that the sum of the discharge power of the super capacitor and the discharge power of the fuel cell is equal to the power required to be suddenly increased. The time length of the next period after the generation of the mutation is related to the amount of the mutation, and the larger the mutation is, the longer the time length of the next period is. The power supply power of the fuel cell and the super capacitor is adjusted in the next time period, so that the power change of the fuel cell can be ensured not to generate sudden change, and the stable adjustment of the fuel cell is realized.
S23, judging whether the electric quantity of the storage battery is larger than a second set value, and if so, executing the step S231; if not, go to step S232; when the electric quantity of the super capacitor is low, if the electric quantity of the storage battery is sufficient, the storage battery discharges to complement the required power increased due to sudden change. Specifically, S231, increasing the discharge power of the storage battery according to the abrupt change amount; and in the next period, the power supply power of the fuel cell is gradually increased, and the discharge power of the storage battery is reduced. In specific application, the discharge power of the storage battery is in direct proportion to the first mutation amount, so that the sum of the discharge power of the fuel cell and the discharge power of the storage battery meets the sum of the required power after corresponding mutation when the mutation occurs.
And S232, increasing the power supply power of the super capacitor and the storage battery in proportion according to the abrupt change, the electric quantity of the super capacitor and the electric quantity of the storage battery, increasing the power supply power of the fuel cell in the next time period, and reducing the power supply power of the super capacitor and the storage battery in proportion. In specific implementation, the ratio of the abrupt change to the power supply of the super capacitor and the power supply of the storage battery is determined by the ratio of the electric quantity of the super capacitor to the electric quantity of the storage battery. And in the next time period after the end of the sudden change, the sum of the power supply of the fuel cell, the power supply of the super capacitor and the power supply of the storage battery is equal to the required power.
S24, judging whether the electric quantity of the super capacitor is smaller than a third set value, if so, executing a step S341; if not, step S25 is performed.
And S241, controlling the fuel cell to charge the super capacitor according to the abrupt change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the super capacitor.
S25, judging whether the electric quantity of the storage battery is smaller than a fourth set value, and if so, executing a step S251; if not, step S252 is performed.
And S251, controlling the fuel cell to charge the storage battery according to the sudden change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the storage battery.
And S252, controlling a fuel cell to simultaneously charge the super capacitor and the storage battery according to the sudden change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously reducing the charge amount of the storage battery and the super capacitor in proportion.
It should be noted that, in steps S241, S251 and S252, if the super capacitor and the storage battery are in a discharging state when the sudden change occurs, in the above steps, the amount of charge to the storage battery and/or the super capacitor is gradually decreased, and is modified to gradually increase the amount of discharge of the storage battery and/or the super capacitor.
In specific implementation, the third set value is smaller than the first set value; the fourth setting value is smaller than the second setting value. In specific implementation, the third set value is 10% to 20% of the maximum capacitance of the super capacitor; the first set value is 60% to 80% of the maximum capacity of the super capacitor; the fourth set value is 20% to 30% of the maximum electric quantity of the storage battery; the two set values are 70% to 90% of the maximum electric quantity of the storage battery. Therefore, the storage battery or the super capacitor can be ensured to be in a proper charging and discharging state.
When in implementation, in order to realize the accurate control according to the working condition of the fuel cell automobile, the invention also comprises a rotating speed sensor; specifically, the rotation speed sensor is used for detecting the rotation speed of the air compressor; the control unit is electrically connected with the rotating speed sensor; the control unit is used for generating a feedback control signal according to the rotating speed sensor so as to realize the adjustment of the air compressor. In this way, feedback regulation can be achieved.
In the specific implementation, under the condition of switching the working conditions, except for the sudden change of the accelerator pedal, the sudden change of the stroke of the brake pedal can also be generated. While the above description has been directed to sudden changes in the accelerator pedal, in practice, sudden changes in the brake pedal also produce sudden changes in the power demand. The realization mode is as follows, the brake pedal sensor is also included; the brake pedal sensor is used for detecting the stroke of a brake pedal; the control unit is also used for judging a second catastrophe point of the travel change of the brake pedal sensor according to the travel of the brake pedal sensor, generating a second transition control signal when the second catastrophe point is generated, and sending the second transition control signal to the energy management unit; the energy management unit is also used for acquiring a second transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal.
Specifically, the judgment of the second sudden change is realized by the judgment of the sudden change of the brake pedal stroke, similar to the judgment method of the first sudden change.
In the next time interval when the second sudden change occurs, if the second sudden change is a sudden change in the direction of increasing the travel of the brake pedal, the power demand is reduced, and the storage battery and/or the super capacitor are/is controlled to be charged; and if the second sudden change is a sudden change in the direction of reducing the stroke of the brake pedal, the power demand is increased, and the charging power of the storage battery and/or the super capacitor is reduced.
In the invention, when the required power is suddenly changed, the rapid intervention is carried out through the storage battery or the super capacitor so as to meet the power requirement. Then, in the next time interval, the power of the fuel cell is gradually increased or decreased, sudden change of the power of the fuel cell is avoided, the exhaust volume of the air compressor is further prevented from being suddenly increased or decreased, and severe disturbance of the air compressor when the required power suddenly changes can be avoided.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (8)
1. A rotating speed active disturbance rejection control system of a hybrid fuel cell automobile in a working condition transition stage comprises a control unit, a storage battery, a super capacitor, a fuel cell stack and an air compressor; the method is characterized in that:
the energy management unit and the accelerator pedal sensor are also included;
the accelerator pedal sensor is used for detecting the stroke of an accelerator pedal;
the control unit judges a first catastrophe point of the travel change of the accelerator pedal according to the travel of the accelerator pedal acquired by the accelerator pedal sensor, generates a first transition control signal when the first catastrophe point is generated, and sends the first transition control signal to the energy management unit;
the energy management unit is electrically connected with the control unit, the storage battery, the super capacitor and the fuel cell stack; the energy management unit is used for acquiring a first transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal.
2. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 1, characterized in that: the control unit obtains a first mutation point by the following method:
s11, the control unit acquires the travel of an accelerator pedal in real time;
s12, judging whether the variation of the current accelerator pedal stroke and the accelerator pedal stroke at the previous moment exceeds 10% of the maximum accelerator pedal stroke; if so, the current moment is a first mutation point; if not, the current time is not the first mutation point.
3. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 2, characterized in that: the first transition control signal comprises a mutation degree and a mutation direction;
the sudden change degree is the variable quantity between the current accelerator pedal stroke and the accelerator pedal stroke at the previous moment; the abrupt change direction is a direction in which the travel of the accelerator pedal increases or decreases from a previous time to a present time.
4. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 3, characterized in that: the power supply also comprises a first electric quantity detection unit and a second electric quantity detection unit;
the first electric quantity detection unit is used for detecting the electric quantity of the storage battery in real time;
the second electric quantity detection unit is used for detecting the electric quantity of the super capacitor in real time;
the first electric quantity detection unit and the second electric quantity detection unit are electrically connected with the energy management unit;
the energy management unit performs energy management by the following method:
s21, identifying the mutation direction, and if the mutation direction is the increasing direction, executing the step S22; if the abrupt change direction is the decreasing direction, executing step S24;
s22, judging whether the electric quantity of the super capacitor is larger than a first set value or not, and if so, executing a step S221; if not, executing step S23;
s221, increasing the discharge capacity of the super capacitor according to the sudden change; in the next time period, the power supply power of the fuel cell is gradually increased, and the power supply power of the super capacitor is reduced;
s23, judging whether the electric quantity of the storage battery is larger than a second set value, and if so, executing the step S231; if not, go to step S232;
s231, increasing the discharge capacity of the storage battery according to the sudden change; in the next time period, the power supply power of the fuel cell is gradually increased, and the power supply power of the storage battery is reduced;
s232, increasing the power supply power of the super capacitor and the storage battery in proportion according to the abrupt change, the electric quantity of the super capacitor and the electric quantity of the storage battery, increasing the power supply power of the fuel cell in the next time period, and reducing the power supply power of the super capacitor and the storage battery in proportion;
s24, judging whether the electric quantity of the super capacitor is smaller than a third set value, if so, executing a step S341; if not, executing step S25;
s241, controlling a fuel cell to charge the super capacitor according to the abrupt change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the super capacitor;
s25, judging whether the electric quantity of the storage battery is smaller than a fourth set value, and if so, executing a step S251; if not, go to step S252;
s251, controlling the fuel cell to charge the storage battery according to the sudden change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously gradually reducing the charge amount of the storage battery;
and S252, controlling a fuel cell to simultaneously charge the super capacitor and the storage battery according to the abrupt change, gradually reducing the power generation amount of the fuel cell in the next period, and synchronously reducing the charging amount to the storage battery and the super capacitor in proportion.
5. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 4, characterized in that: the third set value is smaller than the first set value;
the fourth setting value is smaller than the second setting value.
6. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 5, characterized in that: the third set value is 10% to 20% of the maximum capacitance of the super capacitor;
the first set value is 60% to 80% of the maximum capacity of the super capacitor;
the fourth set value is 20% to 30% of the maximum electric quantity of the storage battery;
the two set values are 70% to 90% of the maximum electric quantity of the storage battery.
7. The hybrid fuel cell vehicle operating condition transition stage rotation speed active disturbance rejection control system according to claim 4, wherein: the device also comprises a rotating speed sensor;
the rotating speed sensor is used for detecting the rotating speed of the air compressor;
the control unit is electrically connected with the rotating speed sensor;
the control unit is used for generating a feedback control signal according to the rotating speed sensor so as to realize the adjustment of the air compressor.
8. The hybrid fuel cell vehicle operation transition stage rotational speed active disturbance rejection control system according to any one of claims 1 to 7, characterized in that: the brake pedal sensor is also included;
the brake pedal sensor is used for detecting the stroke of a brake pedal;
the control unit is also used for judging a second catastrophe point of the travel change of the brake pedal sensor according to the travel of the brake pedal sensor, generating a second transition control signal when the second catastrophe point is generated, and sending the second transition control signal to the energy management unit;
the energy management unit is further used for acquiring a second transition control signal from the control unit and performing energy management on the fuel cell stack, the storage battery and the super capacitor according to the control signal.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010051290A1 (en) * | 2000-05-30 | 2001-12-13 | Nissan Motor Co., Ltd. | Fuel cell system, controller thereof and method |
| US20030077494A1 (en) * | 2001-09-25 | 2003-04-24 | Ballard Power Systems Ag | Method and apparatus for operating a fuel cell system |
| CN1439178A (en) * | 2000-05-15 | 2003-08-27 | 丰田自动车株式会社 | Supply of electric power using fuel cell and chargeable/dischargeable storage |
| CN101238006A (en) * | 2005-08-04 | 2008-08-06 | 丰田自动车株式会社 | Fuel cell vehicle |
| US20140145500A1 (en) * | 2009-06-23 | 2014-05-29 | Hyundai Motor Company | Power distribution device and method for fuel cell-supercapacitor hybrid vehicle |
| CN105633437A (en) * | 2014-11-14 | 2016-06-01 | 丰田自动车株式会社 | Fuel cell system, fuel cell vehicle, and method of controlling fuel cell system |
| CN109860666A (en) * | 2017-11-29 | 2019-06-07 | 丰田自动车株式会社 | Fuel cell system |
| KR20200069691A (en) * | 2018-12-07 | 2020-06-17 | 현대자동차주식회사 | Apparatus and method for controlling acceleration of fuel cell vehicle |
| CN113675434A (en) * | 2021-08-10 | 2021-11-19 | 江苏兴邦能源科技有限公司 | Fuel cell energy management system of hydrogen energy automobile |
| CN113782766A (en) * | 2021-09-18 | 2021-12-10 | 北京亿华通科技股份有限公司 | Start operation auxiliary device of vehicle-mounted fuel cell and control method |
-
2022
- 2022-06-29 CN CN202210749133.3A patent/CN115303087A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439178A (en) * | 2000-05-15 | 2003-08-27 | 丰田自动车株式会社 | Supply of electric power using fuel cell and chargeable/dischargeable storage |
| US20010051290A1 (en) * | 2000-05-30 | 2001-12-13 | Nissan Motor Co., Ltd. | Fuel cell system, controller thereof and method |
| US20030077494A1 (en) * | 2001-09-25 | 2003-04-24 | Ballard Power Systems Ag | Method and apparatus for operating a fuel cell system |
| CN101238006A (en) * | 2005-08-04 | 2008-08-06 | 丰田自动车株式会社 | Fuel cell vehicle |
| US20140145500A1 (en) * | 2009-06-23 | 2014-05-29 | Hyundai Motor Company | Power distribution device and method for fuel cell-supercapacitor hybrid vehicle |
| CN105633437A (en) * | 2014-11-14 | 2016-06-01 | 丰田自动车株式会社 | Fuel cell system, fuel cell vehicle, and method of controlling fuel cell system |
| CN109860666A (en) * | 2017-11-29 | 2019-06-07 | 丰田自动车株式会社 | Fuel cell system |
| KR20200069691A (en) * | 2018-12-07 | 2020-06-17 | 현대자동차주식회사 | Apparatus and method for controlling acceleration of fuel cell vehicle |
| CN113675434A (en) * | 2021-08-10 | 2021-11-19 | 江苏兴邦能源科技有限公司 | Fuel cell energy management system of hydrogen energy automobile |
| CN113782766A (en) * | 2021-09-18 | 2021-12-10 | 北京亿华通科技股份有限公司 | Start operation auxiliary device of vehicle-mounted fuel cell and control method |
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