CN112706658A - Hybrid power system control method, automobile and computer readable storage medium - Google Patents
Hybrid power system control method, automobile and computer readable storage medium Download PDFInfo
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- CN112706658A CN112706658A CN202110114280.9A CN202110114280A CN112706658A CN 112706658 A CN112706658 A CN 112706658A CN 202110114280 A CN202110114280 A CN 202110114280A CN 112706658 A CN112706658 A CN 112706658A
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Sustainable Development (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a hybrid power system control method, an automobile and a computer readable storage medium, wherein the method comprises the following steps: acquiring abnormal information of the fuel cell and the power cell after the abnormality occurs, determining the type of the problem occurring according to the acquired abnormal information, and then sending a control command to the fuel cell controller according to the determined problem type, so that the fuel cell controller performs state control on the fuel cell after receiving the control command. When the fuel cell or the power cell in the hybrid power system is abnormal, the automobile can control the state of the fuel cell according to the corresponding abnormal information to protect the fuel cell or the power cell, so that the service lives of the fuel cell and the power cell are prevented from being damaged when the hybrid power system of the automobile runs, and the economical efficiency and the safety stability of the automobile are improved.
Description
Technical Field
The invention relates to the technical field of fuel cell automobiles, in particular to a hybrid power system control method, an automobile and a computer readable storage medium.
Background
With the development of social economy and the improvement of living standard of people, automobiles almost go into the lives of everyone, but the energy consumption and the environmental pollution are greatly increased while people go out conveniently, and nowadays, new energy automobiles become a new direction for automobile development.
Fuel cell vehicles have attracted considerable attention due to their unique energy-saving and environmental-friendly advantages, and various types of vehicles are being developed. Currently, fuel cells generally use a power cell auxiliary fuel cell of the power type for short-time powering and storing energy for regenerative braking of the vehicle. In order to adapt the vehicle to various complicated road conditions, the fuel cell is usually set to have a high power output, and the response time of turning on and off and adjusting the power is long, so that the power cell must be charged and discharged with high power very frequently. Therefore, the service life of the fuel cell and the power cell is easily impaired when the hybrid system of the automobile is operated.
Disclosure of Invention
The invention mainly aims to provide a control method of a hybrid power system. The problem that the fuel cell and the power cell are damaged when the existing hybrid power system operates is solved.
In order to achieve the above object, the present invention provides a control method of a hybrid system, including the steps of:
receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs;
determining the problem type according to the abnormal information;
and sending a control instruction to a fuel cell controller according to the problem type so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction.
Optionally, the step of receiving the abnormal information after the abnormality of the fuel cell and/or the power cell comprises:
receiving first abnormal information returned by a fuel cell controller after monitoring that the fuel cell is abnormal, and/or receiving second abnormal information returned by a battery management system after monitoring that the power cell is abnormal;
the step of determining the type of the problem according to the abnormal information comprises the following steps:
and determining the problem type according to the first abnormal information and/or the second abnormal information.
Optionally, the step of receiving first abnormality information returned by the fuel cell controller after the abnormality of the fuel cell is monitored, and/or receiving second abnormality information returned by the battery management system after the abnormality of the power cell is monitored comprises:
when the fuel cell controller monitors that the hydrogen pressure monitored by a hydrogen pressure sensor of the fuel cell is less than or equal to a pressure threshold, receiving pressure abnormity information returned by the fuel cell controller;
when the temperature monitored by the temperature sensor of the fuel cell monitored by the fuel cell controller is greater than or equal to a temperature threshold value, receiving temperature abnormal information returned by the fuel cell controller;
when the battery management system monitors that the electric quantity of the power battery is out of the battery electric quantity threshold range, receiving electric quantity abnormal information returned by the battery management system;
and when the battery management system monitors that at least one voltage difference between a plurality of single cells of the power battery is greater than a single cell voltage threshold value, receiving voltage abnormity information returned by the battery management system.
Optionally, the step of determining the type of the problem according to the first abnormal information and/or the second abnormal information includes:
determining that the type of the problem is insufficient fuel of the fuel cell when the first abnormality information is pressure abnormality information;
when the first abnormal information is temperature abnormal information, determining that the problem type is that the temperature of the fuel cell is overhigh;
when the second abnormal information is the abnormal information of the electric quantity, determining that the problem type is the overcharge or the overdischarge of the power battery;
and when the second abnormal information is voltage abnormal information, determining that the problem type is the single voltage imbalance of the power battery.
Optionally, the step of sending a control instruction to a fuel cell controller according to the type of the problem, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction, includes:
when determining that the fuel of the fuel cell is insufficient and/or the temperature of the fuel cell is overhigh, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell;
when the power battery is determined to be overcharged, sending a power limiting instruction or a shutdown instruction to the fuel battery controller so that the fuel battery controller limits the power of the fuel battery or shuts down the fuel battery; or when the power battery is determined to be over-discharged, sending a starting instruction to the fuel battery controller so as to enable the fuel battery controller to start the fuel battery;
and when the cell voltage is determined to be unbalanced, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell.
Optionally, before the step of receiving the abnormal information after the abnormality of the fuel cell and/or the power cell occurs, the method further includes:
receiving a starting signal;
waking up a fuel cell controller and a battery management system to enable the fuel cell controller and the battery management system to perform self-checking;
and after the fuel cell controller and the battery management system are subjected to self-checking and have no fault, controlling the whole vehicle to be electrified at high voltage.
Optionally, the step of receiving the abnormal information after the abnormality of the fuel cell and/or the power cell comprises:
and receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs through the bus.
Optionally, after the step of sending a control instruction to a fuel cell controller according to the type of the problem, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction, the method further includes:
and receiving the execution result fed back by the fuel cell controller.
In addition, to achieve the above object, the present invention also provides an automobile including a memory, a processor, and a hybrid system control program stored on the memory and executable on the processor, wherein: the hybrid system control program, when executed by the processor, implements the steps of the hybrid system control method as described above.
Further, to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a hybrid system control program which, when executed by a processor, implements the steps of the hybrid system control method as described above.
According to the hybrid power system control method, the automobile and the computer readable storage medium provided by the embodiment of the invention, the abnormal information of the fuel cell and the power cell after the abnormality is generated is obtained, the type of the problem is determined according to the obtained abnormal information, and then the control instruction is sent to the fuel cell controller according to the determined problem type, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction. When the fuel cell or the power cell in the hybrid power system is abnormal, the automobile can control the state of the fuel cell according to corresponding abnormal information so as to protect the fuel cell or the power cell, thereby avoiding damaging the service lives of the fuel cell and the power cell when the hybrid power system of the automobile runs, and improving the economical efficiency and the safety and the stability of the automobile.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart diagram illustrating a first embodiment of a hybrid powertrain control method of the present invention;
FIG. 3 is a schematic flow chart diagram illustrating a control method for a hybrid powertrain system according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart diagram illustrating a control method for a hybrid powertrain system according to a third embodiment of the present invention;
FIG. 5 is a schematic flow chart diagram illustrating a fourth embodiment of a control method for a hybrid powertrain system of the present invention;
FIG. 6 is a flowchart illustrating a fifth embodiment of a control method for a hybrid system according to the present invention;
FIG. 7 is a flowchart illustrating a control method of a hybrid system according to a sixth embodiment of the present invention;
FIG. 8 is a flowchart illustrating a seventh embodiment of a control method of a hybrid system of the present invention;
fig. 9 is a flowchart illustrating a control method of a hybrid system according to an eighth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a hybrid electric vehicle. As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, and a memory 1004. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may comprise a Display screen (Display), an input unit such as a switch button, and the optional user interface 1003 may also comprise a standard wired interface, a wireless interface. The memory 1004 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1004 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Such as light sensors, motion sensors, pressure sensors, temperature sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display screen based on the ambient light level and a proximity sensor that turns off the display screen and/or backlight when the hardware device is moved to the ear. Of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and so on, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1004, which is a type of computer storage medium, may include therein an operating system, a user interface module, and a hybrid system control program.
In the terminal shown in fig. 1, the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to invoke the hybrid system control program stored in the memory 1004 and perform the following operations:
receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs;
determining the problem type according to the abnormal information;
and sending a control instruction to a fuel cell controller according to the problem type so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction.
Further, the processor 1001 may call the hybrid system control program stored in the memory 1004, and also perform the following operations:
receiving first abnormal information returned by the fuel cell controller after monitoring that the fuel cell is abnormal, and/or receiving second abnormal information returned by a battery management system after monitoring that the power cell is abnormal;
the step of determining the type of the problem according to the abnormal information comprises the following steps:
and determining the problem type according to the first abnormal information and/or the second abnormal information.
Further, the processor 1001 may call the hybrid system control program stored in the memory 1004, and also perform the following operations:
when the fuel cell controller monitors that the hydrogen pressure monitored by a hydrogen pressure sensor of the fuel cell is smaller than or equal to a pressure threshold value, receiving pressure abnormity information returned by the fuel cell controller;
when the temperature monitored by the temperature sensor of the fuel cell monitored by the fuel cell controller is greater than or equal to a temperature threshold value, receiving temperature abnormity information returned by the fuel cell controller;
when the battery management system monitors that the electric quantity of the power battery is out of the battery electric quantity threshold range, receiving electric quantity abnormal information returned by the battery management system;
and when the battery management system monitors that at least one voltage difference between the plurality of cells of the power battery is greater than a cell voltage threshold value, receiving voltage abnormity information returned by the battery management system.
Further, the processor 1001 may invoke a hybrid system control program stored in the memory 1004, and also perform the following operations:
determining that the type of the problem is insufficient fuel of the fuel cell when the first abnormality information is pressure abnormality information;
when the first abnormal information is temperature abnormal information, determining that the problem type is that the temperature of the fuel cell is overhigh;
when the second abnormal information is abnormal information of electric quantity, determining that the problem type is overcharge or overdischarge of the power battery;
and when the second abnormal information is voltage abnormal information, determining that the problem type is the single voltage imbalance of the power battery.
Further, the processor 1001 may call the hybrid system control program stored in the memory 1004, and also perform the following operations:
when determining that the fuel of the fuel cell is insufficient and/or the temperature of the fuel cell is too high, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell;
when the power battery is determined to be overcharged, sending a power limiting instruction or a shutdown instruction to the fuel battery controller so that the fuel battery controller limits the power of the fuel battery or shuts down the fuel battery; or when the power battery is determined to be over-discharged, sending a starting instruction to the fuel battery controller so as to enable the fuel battery controller to start the fuel battery;
and when the cell voltage is determined to be unbalanced, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell.
Further, the processor 1001 may call the hybrid system control program stored in the memory 1004, and also perform the following operations:
receiving a starting signal;
waking up a fuel cell controller and a battery management system to enable the fuel cell controller and the battery management system to perform self-checking;
and after the fuel cell controller and the battery management system are subjected to self-checking and have no fault, controlling the whole vehicle to be electrified at high voltage.
Further, the processor 1001 may invoke a powertrain control program stored in the memory 1004 to also perform the following operations:
and receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs through the bus.
Further, the processor 1001 may call the hybrid system control program stored in the memory 1004, and also perform the following operations:
and receiving the execution result fed back by the fuel cell controller.
The specific embodiment of the present invention applied to the vehicle is substantially the same as the following embodiments of the control method applied to the hybrid power system, and will not be described herein again.
Referring to fig. 2, fig. 2 is a schematic flow chart of a hybrid power system control method according to a first embodiment of the present invention, wherein the hybrid power system control method includes the following steps:
step S100, receiving abnormal information of the fuel cell and/or the power cell after abnormality occurs;
in this embodiment, the present invention may be applied to a device such as an automobile that uses a hybrid power system, and the power system of the hybrid power vehicle is controlled by a vehicle Control unit vcu (vehicle Control unit). The hybrid power system comprises a fuel cell part and a power cell part, wherein the fuel cell and the power cell respectively generate corresponding state information when in work, the state information can be information generated when the fuel cell and the power cell normally operate or information generated when the fuel cell and the power cell are abnormal, and the vehicle control unit can receive abnormal information generated when the fuel cell and the power cell are abnormal in work.
For example, when the fuel cell is in operation, the temperature of the fuel cell stack is not constant, and when the temperature of the fuel cell stack continuously rises to cause an overhigh temperature, information of temperature abnormality is generated, and the vehicle control unit can receive the abnormal information.
Step S200, determining the problem type according to the abnormal information;
since the power system of the automobile includes a fuel cell part and a power cell part, and the abnormal problems of the fuel cell and the power cell are various, the type of the abnormal information is more than one, and after the vehicle controller receives the abnormal information, the vehicle controller needs to judge the abnormal information to determine the problem type corresponding to the abnormal information, i.e. to judge what kind of fault occurs to the power system. For example, the abnormal information received by the vehicle control unit is temperature-related abnormal information of the fuel cell stack, and the vehicle control unit can determine that the fault in the power system is the temperature of the fuel cell stack according to the abnormal information.
And step S300, sending a control instruction to a fuel cell controller according to the problem type, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction.
By monitoring and controlling the fuel cell and the power cell, after the problem type is determined by the vehicle controller through the abnormal information, a Control instruction can be sent to a fuel cell controller fcu (fuel cell Control unit) for monitoring the fuel cell system according to the determined problem type, and after the fuel cell controller receives the Control instruction sent by the vehicle controller, the fuel cell controller performs corresponding state Control on the fuel cell system according to the instruction type. For example, when the problem type is a fuel cell temperature problem, the vehicle control unit sends a fuel cell temperature control command to the fuel cell controller, and the fuel cell controller controls the state of the fuel cell system after receiving the command, so that the temperature is adjusted accordingly. The fuel cell system can be monitored and controlled by a control device such as a fuel cell controller.
In the embodiment of the invention, the vehicle control unit firstly acquires abnormal information generated after the fuel cell and the power cell are abnormal, determines the type of the problem according to the acquired abnormal information, and sends a control command to the fuel cell controller according to the determined type of the problem, so that the fuel cell controller controls the state of the fuel cell after receiving the control command. When the fuel cell or the power cell in the hybrid power system is abnormal, the automobile can control the state of the fuel cell according to corresponding abnormal information so as to protect the fuel cell or the power cell, thereby avoiding damaging the service lives of the fuel cell and the power cell when the hybrid power system of the automobile runs, and improving the economical efficiency and the safety and the stability of the automobile.
Further, referring to fig. 3, fig. 3 is a schematic flowchart of a second embodiment of the hybrid system control method according to the present invention, and based on the embodiment shown in fig. 2, the step S100 of receiving the abnormality information of the fuel cell and/or the power cell after the abnormality occurs includes:
step S110, receiving first abnormal information returned by the fuel cell controller after monitoring that the fuel cell is abnormal, and/or receiving second abnormal information returned by a battery management system after monitoring that the power cell is abnormal;
the step S200 of determining the type of the problem according to the abnormal information includes:
step S210, determining the problem type according to the first abnormal information and/or the second abnormal information.
In the present embodiment, the hybrid system is composed of a vehicle controller, a fuel cell system and a power cell system, the fuel cell system is responsible for monitoring the fuel cell related state by the fuel cell controller, and the power cell system is responsible for monitoring the power cell related state by a battery Management system bms (battery Management system). The fuel cell controller monitors the fuel cell, when the fuel cell controller monitors that the fuel cell is abnormal, the abnormal information sent to the vehicle controller is first abnormal information, the battery management system monitors the power cell, and when the battery power management system monitors that the power cell is abnormal, the abnormal information sent to the vehicle controller is second abnormal information. The vehicle control unit may receive the first abnormal information or the second abnormal information or simultaneously receive the first abnormal information and the second abnormal information, and the vehicle control unit determines the type of the problem according to the received abnormal information.
Further, referring to fig. 4, fig. 4 is a flowchart illustrating a third embodiment of a control method of a hybrid system. Based on the above-mentioned embodiment shown in fig. 3, the step S110 of receiving first abnormality information returned by the fuel cell controller after monitoring that the fuel cell is abnormal, and/or receiving second abnormality information returned by the battery management system after monitoring that the power cell is abnormal includes:
step S111, when the fuel cell controller monitors that the hydrogen pressure monitored by the hydrogen pressure sensor of the fuel cell is less than or equal to a pressure threshold, receiving pressure abnormity information returned by the fuel cell controller;
step S112, when the temperature monitored by the temperature sensor of the fuel cell monitored by the fuel cell controller is greater than or equal to a temperature threshold, receiving temperature abnormal information returned by the fuel cell controller;
step S113, when the battery management system monitors that the electric quantity of the power battery is out of the battery electric quantity threshold range, receiving electric quantity abnormal information returned by the battery management system;
step S114, when the battery management system monitors that at least one voltage difference between the plurality of cells of the power battery is greater than a cell voltage threshold, receiving voltage abnormal information returned by the battery management system.
In the embodiment, the hydrogen pressure of the hydrogen storage system of the fuel cell is monitored by the pressure sensor, the temperature of the fuel cell stack is monitored by the temperature sensor, and the battery power of the power battery and the voltage difference between the single bodies are monitored by the battery management system.
When the fuel cell and the power cell work, the cell operation state information is generated, the state information can be hydrogen pressure information of a hydrogen storage system of the fuel cell or temperature information of a fuel cell stack, or the battery electric quantity information of the power battery or the information of the voltage difference between the single bodies, the fuel battery controller compares and analyzes the state information with the preset threshold value corresponding to the state information by setting the preset threshold value related to the state information, abnormal information which is not within the preset threshold value range in the state information of the fuel cell can be screened out, the battery management system carries out comparison analysis by comparing the state information with the preset threshold value corresponding to the state information, abnormal information which is not within a preset threshold range in the state information of the power battery can be screened out, and the vehicle control unit receives the abnormal state information of the fuel battery or the power battery or the fuel battery and the power battery through a fuel battery controller or a battery management system.
It is understood that the abnormal state information at least includes the following cases: the hydrogen pressure of the fuel cell hydrogen storage system is not in the threshold range, namely the hydrogen pressure is close to or less than a preset lower limit value, and the abnormal information at the moment is abnormal pressure information; if the temperature of the fuel cell stack is not in the threshold range, the temperature is close to or exceeds a preset upper limit value, and the abnormal information at the moment is temperature abnormal information; if the battery electric quantity of the power battery is not in the threshold range, the battery electric quantity is smaller than a preset lower limit value or larger than a preset upper limit value, and electric quantity abnormal information is obtained at the moment; the fact that the voltage difference of the single power batteries is not within the threshold range means that at least one upper limit value larger than the voltage difference between the single power batteries exists in the voltage difference between the single power batteries, and the voltage difference is abnormal information, wherein the power batteries are mostly used by the power batteries in a serial connection mode, the voltage difference of the single power batteries is the voltage difference between the single power batteries of the power battery pack, the battery management system monitors the voltage of the single power batteries of the power battery pack, the voltage difference between the single power batteries is obtained, the voltage difference is compared with the preset upper limit value, and whether the information larger than the upper limit value exists is obtained. For example, when the hybrid system control program is running, the temperature of the fuel cell stack monitored by the temperature sensor is 90 ℃, the preset upper limit temperature value is 80 ℃, when the fuel cell controller receives the information, the information can be judged to be abnormal temperature information by comparing the temperature monitored by the temperature sensor with the preset upper limit temperature value, and the fuel cell controller screens the abnormal temperature information and sends the information to the vehicle controller, so that the vehicle controller receives the abnormal temperature information.
Further, referring to fig. 5, fig. 5 is a flowchart illustrating a fourth embodiment of a control method of a hybrid system. Based on the embodiment shown in fig. 4, in step S210, the step of determining the type of the problem according to the first abnormal information and/or the second abnormal information includes:
step S211, when the first abnormality information is pressure abnormality information, determining that the problem type is fuel deficiency of the fuel cell;
step S212, when the first abnormal information is abnormal temperature information, determining that the problem type is overhigh temperature of the fuel cell;
step S213, when the second abnormal information is abnormal information of electric quantity, determining that the problem type is overcharge or overdischarge of the power battery;
and step S214, when the second abnormal information is abnormal voltage information, determining that the problem type is the single voltage imbalance of the power battery.
In this embodiment, after the type of the abnormal information is determined, the vehicle control unit may determine the type of the problem generated by the power system according to the received abnormal information, where the abnormal information is various, and different types of the problem may be determined.
The vehicle control unit receives first abnormal information and second abnormal information, wherein the first abnormal information can comprise pressure abnormal information and temperature abnormal information, and when the vehicle control unit receives the pressure abnormal information sent by the fuel cell controller, the vehicle control unit can determine that the problem is insufficient fuel of the fuel cell according to the pressure abnormal information; when the vehicle control unit receives the temperature abnormality information sent by the fuel cell controller, it may be determined that the problem is that the temperature of the fuel cell is too high according to the temperature abnormality information. The second abnormal information may include abnormal electric quantity information and abnormal voltage information, and when the vehicle control unit receives the abnormal electric quantity information sent by the battery management system, the vehicle control unit may determine that the problem is overcharge or overdischarge of the power battery according to the abnormal electric quantity information; when the vehicle control unit receives the voltage abnormality information sent by the battery management system, the single voltage imbalance of the power battery can be determined as a problem according to the voltage abnormality information.
Further, referring to fig. 6, fig. 6 is a flowchart illustrating a fifth embodiment of a control method of a hybrid system. Based on the above-mentioned embodiment shown in fig. 5, the step S300 of sending a control instruction to a fuel cell controller according to the type of the problem, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction includes:
step S310, when determining that the fuel of the fuel cell is insufficient and/or the temperature of the fuel cell is overhigh, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell;
step S320, when determining that the power battery is overcharged, sending a power limiting instruction or a shutdown instruction to the fuel battery controller so that the fuel battery controller limits power or shuts down the fuel battery; or when the power battery is determined to be over-discharged, sending a starting instruction to the fuel battery controller so as to enable the fuel battery controller to start the fuel battery;
and step S330, when the cell voltage is determined to be unbalanced, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell.
In this embodiment, after the vehicle control unit determines the problem type according to the abnormal information, the vehicle control unit may send a corresponding control instruction to the fuel cell controller according to the determined problem type, and the fuel cell controller controls the state of the fuel cell after receiving the corresponding instruction.
When the vehicle control unit determines that the problem type is insufficient fuel of the fuel cell, the vehicle control unit sends a power limiting or stopping instruction to the fuel cell controller, and the fuel cell limits the power or stops the power of the fuel cell after receiving the power limiting or stopping instruction, so that the fuel cell reduces or stops the consumption of hydrogen in the hydrogen storage system; when the vehicle control unit determines that the problem type is that the temperature of the fuel cell is too high, the vehicle control unit sends a power limiting or stopping instruction to the fuel cell controller, and the fuel cell limits the power or stops the fuel cell after receiving the power limiting or stopping instruction so as to reduce the temperature of the fuel cell stack; when the vehicle control unit determines that the problem type is the overcharge of the power battery, the vehicle control unit sends a power limiting or stopping instruction to the fuel battery controller, and the fuel battery limits the power or stops the power of the fuel battery after receiving the power limiting or stopping instruction so as to reduce or stop the charging of the power battery and avoid the influence on the service life of the battery caused by the large current passing through the power battery in a high-power state; when the vehicle control unit determines that the problem type is over discharge of the power battery, the vehicle control unit sends a starting instruction to the fuel battery controller, and the fuel battery starts the fuel battery after receiving the starting instruction to charge the power battery so that the electric quantity of the power battery is increased to a preset range; when the problem type is determined to be that the voltage of the power battery single bodies is unbalanced, the vehicle control unit sends a power limiting or stopping instruction to the fuel battery controller, and the fuel battery limits the power or stops the power of the fuel battery after receiving the power limiting or stopping instruction so as to reduce or stop charging the power battery, so that the trend of increasing the voltage difference between the power battery single bodies is reduced, or the voltage difference between the power battery single bodies is prevented from continuously increasing.
Further, referring to fig. 7, fig. 7 is a flowchart illustrating a sixth embodiment of a control method of a hybrid system. Based on the above embodiments shown in fig. 2 to fig. 6, before the step S100 of receiving the abnormality information after the abnormality of the fuel cell and/or the power cell occurs, the method further includes:
step S400, receiving a starting signal;
step S401, a fuel cell controller and a battery management system are awakened so that the fuel cell controller and the battery management system can carry out self-checking;
and S402, controlling the whole vehicle to be electrified at high voltage after the fuel cell controller and the battery management system are self-checked to be free of faults.
In this embodiment, before the whole vehicle is started, the fuel cell controller and the battery management system are in a shutdown state, the whole vehicle controller is awakened through a key electric signal, then the whole vehicle controller sends an awakening signal to the fuel cell controller and the battery management system to awaken the fuel cell controller and the battery management system, the fuel cell controller and the battery management system start self-checking after being awakened, and the whole vehicle is allowed to be powered on at a high voltage after determining that no fault exists. The self-checking of the fuel cell controller comprises checking the stack temperature of the fuel cell and the hydrogen pressure of the hydrogen storage system, and the self-checking of the battery management system comprises checking the battery power of the power battery and the voltage difference between the battery monomers.
Further, referring to fig. 8, fig. 8 is a flowchart illustrating a seventh embodiment of a control method of a hybrid system. Based on the above-mentioned embodiments shown in fig. 2 to 6, the step S100 of receiving the abnormality information after the abnormality of the fuel cell and/or the power cell includes:
and step S115, receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs through the bus.
In this embodiment, the vehicle controller may receive abnormal information generated after the abnormality occurs in the fuel cell and the power cell, and the fuel cell controller and the battery management system may send the abnormal information to the vehicle controller through the bus after screening out the abnormal information. And after receiving the abnormal information, the vehicle control unit determines the problem type according to the abnormal information, and then sends a corresponding control instruction to the fuel cell controller through the bus according to the determined problem type.
Further, referring to fig. 9, fig. 9 is a flowchart illustrating a control method of a hybrid system according to an eighth embodiment. Based on the above-mentioned embodiments shown in fig. 2 to fig. 6, after the step S300 of sending a control instruction to a fuel cell controller according to the type of the problem, so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction, the method further includes:
and step S500, receiving the execution result fed back by the fuel cell controller.
In this embodiment, the vehicle control unit sends a control instruction for an abnormal problem, the fuel cell controller executes a related control instruction to adjust the state of the fuel cell, after the fuel cell is controlled to execute the related instruction, the fuel cell controller feeds back an execution result to the vehicle control unit, the vehicle control unit continues to monitor vehicle information after obtaining the execution result, and controls the normal operation of a vehicle power system, the operation state of the power system and the execution result fed back by the fuel cell controller can be displayed on a vehicle instrument panel, so that a user can check the operation state, and after the states of the vehicle system are recovered to be normal, the user can manually control the power system.
Furthermore, the present invention also provides a computer-readable storage medium having a hybrid system control program stored thereon. The computer-readable storage medium may be the Memory 20 in the terminal of fig. 1, and may also be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, and the computer-readable storage medium includes several instructions for causing a hybrid system having a processor to execute the hybrid system control method according to the embodiments of the present invention.
It is to be understood that throughout the description of the present specification, reference to the term "one embodiment", "another embodiment", "other embodiments", or "first through nth embodiments", etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention. The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A hybrid powertrain control method, comprising the steps of:
receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs;
determining the problem type according to the abnormal information;
and sending a control instruction to a fuel cell controller according to the problem type so that the fuel cell controller performs state control on the fuel cell after receiving the control instruction.
2. The hybrid system control method according to claim 1, wherein the step of receiving abnormality information after abnormality of the fuel cell and/or the power cell includes:
receiving first abnormal information returned by the fuel cell controller after monitoring that the fuel cell is abnormal, and/or receiving second abnormal information returned by a battery management system after monitoring that the power cell is abnormal;
the step of determining the type of the problem according to the abnormal information comprises the following steps:
and determining the problem type according to the first abnormal information and/or the second abnormal information.
3. The hybrid system control method according to claim 2, wherein the step of receiving first abnormality information returned by the fuel cell controller after the abnormality of the fuel cell is monitored, and/or receiving second abnormality information returned by a battery management system after the abnormality of the power cell is monitored, includes:
when the fuel cell controller monitors that the hydrogen pressure monitored by a hydrogen pressure sensor of the fuel cell is smaller than or equal to a pressure threshold value, receiving pressure abnormity information returned by the fuel cell controller;
when the temperature monitored by the temperature sensor of the fuel cell monitored by the fuel cell controller is greater than or equal to a temperature threshold value, receiving temperature abnormity information returned by the fuel cell controller;
when the battery management system monitors that the electric quantity of the power battery is out of the battery electric quantity threshold range, receiving electric quantity abnormal information returned by the battery management system;
and when the battery management system monitors that at least one voltage difference between the plurality of cells of the power battery is greater than a cell voltage threshold value, receiving voltage abnormity information returned by the battery management system.
4. The hybrid system control method according to claim 3, characterized in that the step of determining the type of problem from the first abnormality information and/or the second abnormality information includes:
determining that the type of the problem is insufficient fuel of the fuel cell when the first abnormality information is pressure abnormality information;
when the first abnormal information is temperature abnormal information, determining that the problem type is that the temperature of the fuel cell is overhigh;
when the second abnormal information is abnormal information of electric quantity, determining that the problem type is overcharge or overdischarge of the power battery;
and when the second abnormal information is voltage abnormal information, determining that the problem type is the single voltage imbalance of the power battery.
5. The hybrid system control method according to claim 4, wherein the step of sending a control command to a fuel cell controller according to the type of problem to cause the fuel cell controller to perform state control on the fuel cell after receiving the control command comprises:
when determining that the fuel of the fuel cell is insufficient and/or the temperature of the fuel cell is too high, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell;
when the power battery is determined to be overcharged, sending a power limiting instruction or a shutdown instruction to the fuel battery controller so that the fuel battery controller limits the power of the fuel battery or shuts down the fuel battery; or when the power battery is determined to be over-discharged, sending a starting instruction to the fuel battery controller so as to enable the fuel battery controller to start the fuel battery;
and when the cell voltage is determined to be unbalanced, sending a power limiting instruction or a shutdown instruction to the fuel cell controller so that the fuel cell controller limits the power of the fuel cell or shuts down the fuel cell.
6. The hybrid system control method according to any one of claims 1 to 5, characterized in that, before the step of receiving the abnormality information after abnormality of the fuel cell and/or the power cell, the method further comprises:
receiving a starting signal;
waking up a fuel cell controller and a battery management system to enable the fuel cell controller and the battery management system to perform self-checking;
and after the fuel cell controller and the battery management system are subjected to self-checking and have no fault, controlling the whole vehicle to be electrified at high voltage.
7. The hybrid system control method according to any one of claims 1 to 5, wherein the step of receiving abnormality information after abnormality of the fuel cell and/or the power cell includes:
and receiving abnormal information of the fuel cell and/or the power cell after the abnormality occurs through the bus.
8. The hybrid system control method according to any one of claims 1 to 5, wherein after the step of sending a control command to a fuel cell controller according to the type of the problem so that the fuel cell controller performs state control on the fuel cell after receiving the control command, the method further comprises:
and receiving the execution result fed back by the fuel cell controller.
9. A vehicle comprising a memory, a processor, and a hybrid system control program stored on the memory and executable on the processor, wherein: the hybrid system control program when executed by the processor implements the steps of the hybrid system control method according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a hybrid system control program that, when executed by a processor, implements the steps of the hybrid system control method according to any one of claims 1 to 8.
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