CN113771628B - Hybrid electric vehicle power generation control method and device and hybrid electric vehicle - Google Patents
Hybrid electric vehicle power generation control method and device and hybrid electric vehicle Download PDFInfo
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- CN113771628B CN113771628B CN202010516468.1A CN202010516468A CN113771628B CN 113771628 B CN113771628 B CN 113771628B CN 202010516468 A CN202010516468 A CN 202010516468A CN 113771628 B CN113771628 B CN 113771628B
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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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
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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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
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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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
- B60L2240/547—Voltage
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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
- B60L2240/549—Current
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application provides a hybrid electric vehicle power generation control method and device and a hybrid electric vehicle, and belongs to the technical field of new energy vehicles. The method comprises the following steps: receiving charging current and charging voltage of a power battery; calculating the actual charging power of the power battery according to the charging current and the charging voltage; and if the actual charging power of the power battery meets the preset condition, the motor is turned off. According to the application, through carrying out safety monitoring on the actual charging power of the power battery, when the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery, if the actual charging power of the power battery meets the turn-off condition of the motor, the motor is turned off to stop the motor, so that the overcharge of the power battery caused by the failure of the whole vehicle controller or the motor can be effectively avoided, the risk is reduced, and the personal safety of a driver is ensured.
Description
Technical Field
The application relates to the technical field of new energy automobiles, in particular to a hybrid electric vehicle power generation control method, a hybrid electric vehicle power generation control device and a hybrid electric vehicle.
Background
The method for feedback and power generation of a complete Vehicle Controller (VCU) of a conventional hybrid power passenger car with a BSG motor is as follows: according to different working conditions of the vehicle, influence factors such as vehicle speed, brake pedal, SOC and the like are collected, feedback and power generation torque is calculated, the torque is limited to be not more than the maximum allowable charging power of the BMS, and then the torque is distributed to a front motor, a rear motor and a BSG motor for feedback or power generation.
However, the existing power generation method does not consider that once the CPU chip of the VCU fails, feedback (or power generation) torque sent to the motor is overlarge, or the motor does not execute according to target torque of the VCU, larger feedback torque is output, so that the battery is overcharged, overheat combustion explosion of the battery is caused continuously for a long time, and personal safety is compromised.
Disclosure of Invention
The application aims to control the power generation state of a motor by monitoring the charging power of a power battery so as to solve the problem that the conventional power generation method cannot accurately control the charging power of the power battery under the condition of VCU or motor failure.
In order to achieve the above object, in a first aspect of the present application, there is provided a power generation control method of a hybrid vehicle including a motor for generating power to charge a power battery, the power generation control method comprising:
collecting charging current and charging voltage of the power battery;
calculating the actual charging power of the power battery according to the charging current of the power battery and the charging voltage of the power battery;
and if the actual charging power of the power battery meets a preset condition, the motor is turned off.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a second delay.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
Optionally, the hybrid electric vehicle further includes a vehicle controller, where the vehicle controller is configured to control, when receiving the fault alarm signal, a generated torque of the motor to control the motor to adjust the generated power to be within a maximum allowable charging power of the power battery.
In a second aspect of the present application, there is provided a hybrid vehicle power generation control apparatus including a motor for generating power to charge a power battery, and a power battery, the hybrid vehicle power generation control apparatus comprising:
the data acquisition module is configured to acquire charging current and charging voltage of the power battery;
a calculation module configured to calculate an actual charging power of the power battery according to a charging current of the power battery and a charging voltage of the power battery;
and the control module is configured to shut off the motor if the actual charging power of the power battery meets a preset condition.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a second delay.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
Optionally, the hybrid electric vehicle further includes a vehicle controller, where the vehicle controller is configured to control, when receiving the fault alarm signal, a generated torque of the motor to control the motor to adjust the generated power to be within a maximum allowable charging power of the power battery.
In a third aspect of the present application, there is provided a terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the above-mentioned hybrid vehicle power generation control method when executing the computer program.
In a fourth aspect of the present application, there is provided a hybrid vehicle including the hybrid vehicle power generation control device described above.
According to the technical scheme, the actual charging power of the power battery is safely monitored, when the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery, if the actual charging power of the power battery meets the turn-off condition of the motor, the motor is turned off to stop the motor, and the overcharge of the power battery caused by the failure of the whole vehicle controller or the motor can be effectively avoided, so that the risk is reduced, and the personal safety of a driver is ensured.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
fig. 1 is a flowchart of a power generation control method of a hybrid electric vehicle according to a preferred embodiment of the present application;
fig. 2 is a diagram of a whole frame of a hybrid electric vehicle according to a preferred embodiment of the present application;
fig. 3 is a flow chart of overcharge protection of a power cell provided by a preferred embodiment of the present application;
FIG. 4 is a schematic diagram of power cell overcharge monitoring provided in accordance with a preferred embodiment of the present application;
FIG. 5 is a schematic block diagram of a hybrid vehicle power generation control apparatus provided in a preferred embodiment of the present application;
fig. 6 is a schematic diagram of a terminal device according to a preferred embodiment of the present application.
Description of the reference numerals
10-terminal equipment, 100-processor, 101-memory, 102-computer program, 201-data receiving module, 202-computing module, 203-control module.
Detailed Description
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
As shown in fig. 1, the present embodiment provides a power generation control method for a hybrid electric vehicle, the hybrid electric vehicle including a motor and a power battery, the motor being configured to generate power to charge the power battery, the power generation control method for the hybrid electric vehicle including:
s100, collecting charging current and charging voltage of a power battery;
s200, calculating the actual charging power of the power battery according to the charging current of the power battery and the charging voltage of the power battery;
s300, if the actual charging power of the power battery meets the preset condition, the motor is turned off.
Therefore, according to the embodiment, through carrying out safety monitoring on the actual charging power of the power battery, when the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery, if the actual charging power of the power battery meets the turn-off condition of the motor, the motor is turned off to stop the motor, and the overcharge of the power battery caused by the faults of the whole vehicle controller or the motor can be effectively avoided, so that the risk is reduced, and the personal safety of a driver is ensured.
As shown in fig. 2, the whole frame of the hybrid electric vehicle according to the present embodiment is composed of a motor, a power battery and a whole vehicle controller, wherein the motor is used for generating electricity to charge the power battery. The motor is a BSG motor, and the BSG motor generates power under the drive of an automobile engine so as to charge a power battery. The whole vehicle manages the battery system through the BMS, for example, collects charging current and charging voltage data of the power battery. The method comprises the steps of defining a whole vehicle controller to work in a layer 1, and being configured to execute power generation torque calculation of a motor, obtain BMS charging torque limit, distribute large motor torque and BSG power generation torque, receive fault alarm signals, save fault codes and execute fault processing, wherein the whole vehicle controller controls the motor to adjust power generation power within a reasonable range by controlling the power generation torque of the motor so as to execute the fault processing, and meanwhile, the whole vehicle controller records the fault codes and sends the fault codes to an instrument for alarming so as to prompt a user that power generation and feedback functions are unavailable. The vehicle controller of the present embodiment may be an independent CPU chip or a core in a dual-core CPU chip, and accordingly, the power generation control method of the present embodiment may be applied to an independent CPU chip or a core in a dual-core CPU chip, which is not limited thereto, and the present embodiment is defined to operate in 2 layers. According to the embodiment, the actual charging power of the power battery is calculated by receiving the real-time charging current and the real-time charging voltage of the power battery, which are collected by the BMS, and the slave BMS obtains the maximum allowable charging power of the power battery and judges whether the current actual charging power of the power battery is larger than the maximum allowable charging power of the power battery, if so, whether the actual charging power of the power battery meets the shutdown condition of the BSG motor is judged, and if so, the signal output of the whole vehicle controller to the BSG motor is cut off, for example, the CAN output signal of the whole vehicle controller to the motor controlled by the motor is cut off, so that the operation of the BSG motor is forbidden.
As shown in fig. 3 and 4, in an alternative embodiment of the present application, if the actual charging power of the power battery meets a preset condition, turning off the motor includes:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
and recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after the second time delay.
When the actual charging power P0 of the power battery is larger than the maximum allowable charging power P1, judging that the generated torque sent to the BSG motor is overlarge due to the failure of the whole vehicle controller, or the BSG motor does not execute according to the target torque of the whole vehicle controller, so that larger torque is output, and the battery is overcharged, starting timing, for example, performing timing through a pre-configured t1 timer, waiting for the time of a first delay, enabling the first delay to be Ums, waiting for the first sub-delay time if P0< P1 in the first delay time, and considering no failure if P0< P1 is at the end of the first sub-delay time, and clearing the t1 timer; if P0> P1 is at the end of the first sub-delay time, continuing to wait until the end of the first delay time, wherein the end time of the first sub-delay is less than the end time of the first delay. When the current moment recorded by the t1 timer is larger than the first delay ending moment, judging whether the current actual charging power P0 of the power battery is larger than the maximum allowable charging power P1 of the power battery, if not, resetting the t1 timer; if so, a fault alarm signal is sent to the whole vehicle controller, the whole vehicle controller receives the fault alarm signal and executes fault processing, the generated torque of the BSG motor is controlled to control the BSG motor to adjust the generated power to be within the maximum allowable charging power of the power battery, and meanwhile, a preset t2 timer is used for executing timing and waiting for the second delay time. When the current time recorded by the t2 timer is greater than or equal to a preset second delay time, enabling the second delay time to be Nms, judging whether the current actual charging power P0 of the power battery is greater than the maximum allowable charging power P1 of the power battery, and if not, resetting the t2 timer; if yes, judging that the whole vehicle controller does not successfully execute fault processing, cutting off a CAN output signal of the whole vehicle controller for controlling the motor to turn off the BSG motor so as to stop the BSG motor.
In another alternative embodiment of the present application, if the actual charging power of the power battery satisfies a preset condition, turning off the motor includes:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
When the actual charging power P0 of the power battery is larger than the maximum allowable charging power P1, judging whether the generated torque sent to the BSG motor is overlarge due to the failure of the whole vehicle controller or not, or the BSG motor is not executed according to the target torque of the whole vehicle controller, so that larger torque is output, and the battery is overcharged, if so, calculating the actual charging power of the power battery at each sampling time point through a preset t3 timer, after a preset third delay, judging whether the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power obtained in the preset third delay is larger than or equal to a preset first threshold, if not, resetting the t3 timer; if yes, sending a fault alarm signal to the whole vehicle controller, receiving the fault alarm signal and executing fault processing by the whole vehicle controller, controlling the generated torque of the BSG motor to control the BSG motor to adjust the generated power to be within the maximum allowable charging power of the power battery, simultaneously, executing timing by a pre-configured t4 timer, calculating the actual charging power of the power battery at each sampling time point within a preset fourth time delay at a set frequency, judging whether the number of times that the obtained actual charging power of the power battery is greater than the maximum allowable charging power within the preset fourth time delay is greater than or equal to a preset second threshold, and if not, resetting the t4 timer; if yes, judging that the whole vehicle controller does not successfully execute fault processing, cutting off a CAN output signal of the whole vehicle controller for controlling the motor to turn off the BSG motor so as to stop the BSG motor.
As shown in fig. 5, in a second aspect of the present embodiment, there is provided a hybrid vehicle power generation control apparatus, the hybrid vehicle including a motor and a power battery, the motor being configured to generate power to charge the power battery, the hybrid vehicle power generation control apparatus comprising:
a data acquisition module 201 configured to acquire a charging current and a charging voltage of the power battery;
a calculation module 202 configured to calculate an actual charging power of the power battery based on the charging current of the power battery and the charging voltage of the power battery;
the control module 203 is configured to switch off the motor if the actual charging power of the power battery meets a preset condition.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a second delay.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
Optionally, the hybrid electric vehicle further comprises a vehicle controller, and the vehicle controller is used for controlling the generated torque of the motor to control the motor to adjust the generated power to be within the maximum allowable charging power of the power battery when the fault warning signal is received.
In a third aspect of the present embodiment, there is provided a terminal device 10 including a processor 100, a memory 101, and a computer program 102 stored in the memory and executable on the processor, wherein the processor implements the above-described hybrid vehicle power generation control method when executing the computer program.
As shown in fig. 6, the terminal device 10 of the present embodiment includes: a processor 100, a memory 101, and a computer program 102 stored in the memory 101 and executable on the processor 100. The steps of the method embodiments described above are implemented by the processor 100 when executing the computer program 102. Alternatively, the processor 100, when executing the computer program 102, performs the functions of the modules/units of the apparatus embodiments described above.
By way of example, computer program 102 may be partitioned into one or more modules/units that are stored in memory 101 and executed by processor 100 to accomplish the present application. One or more of the modules/units may be a series of computer program instruction segments capable of performing a specific function for describing the execution of the computer program 102 in the terminal device 10. For example, the computer program 102 may be divided into a data receiving module 201, a calculating module 202, and a control module 203 (a module in a virtual device).
The terminal device 10 may be a computing device such as a desktop computer, a notebook computer, a palm computer, and a cloud server. Terminal device 10 may include, but is not limited to, a processor 100, a memory 101. It will be appreciated by those skilled in the art that fig. 6 is merely an example of the terminal device 10 and is not limiting of the terminal device 10, and may include more or fewer components than shown, or may combine certain components, or different components, e.g., the terminal device may also include input-output devices, network access devices, buses, etc.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In a fourth aspect of the present embodiment, there is provided a hybrid vehicle including the hybrid vehicle power generation control device. The hybrid electric vehicle of the embodiment of the application adopts the power generation control device of the hybrid electric vehicle, can realize the overcharge protection of the power battery, can effectively ensure the charge safety of the power battery when the vehicle runs, and ensures that the whole vehicle enters a safer state, thereby ensuring the safety of the vehicle and personnel.
Other configurations and functions of the hybrid vehicle according to the present embodiment are known to those skilled in the art, and a detailed description thereof is omitted for the sake of redundancy.
In summary, according to the embodiment, through carrying out safety monitoring on the actual charging power of the power battery, when the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, the preset delay is set, after the preset delay, the motor is judged to be turned off when the turn-off condition of the motor is met so that the motor stops working, the overcharge of the power battery caused by the faults of the whole vehicle controller or the motor can be effectively avoided, the risk is reduced, and the personal safety of a driver is ensured.
The alternative embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the embodiments of the present application are not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present application within the scope of the technical concept of the embodiments of the present application, and all the simple modifications belong to the protection scope of the embodiments of the present application.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of embodiments of the application are not described in detail.
Those skilled in the art will appreciate that all or part of the steps in a method for implementing the above embodiments may be implemented by a program stored in a storage medium, where the program includes several instructions for causing a single-chip microcomputer, chip or processor (processor) to perform all or part of the steps in a method according to various embodiments of the application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In addition, any combination of the various embodiments of the present application may be made, so long as it does not deviate from the idea of the embodiments of the present application, and it should also be regarded as the disclosure of the embodiments of the present application.
Claims (8)
1. The power generation control method of the hybrid electric vehicle comprises a motor and a power battery, wherein the motor is used for generating power to charge the power battery, and the power generation control method of the hybrid electric vehicle comprises the following steps:
collecting charging current and charging voltage of the power battery;
calculating the actual charging power of the power battery according to the charging current of the power battery and the charging voltage of the power battery;
if the actual charging power of the power battery meets a preset condition, the motor is turned off, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a second delay.
2. The hybrid vehicle power generation control method according to claim 1, wherein if the actual charging power of the power battery satisfies a preset condition, turning off the motor, replacing it with:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
3. The hybrid vehicle power generation control method according to claim 1 or 2, characterized in that the hybrid vehicle further comprises a vehicle controller for controlling the power generation torque of the motor to control the motor to adjust the power generation power to within the maximum allowable charge power of the power battery when the fault warning signal is received.
4. A hybrid electric vehicle power generation control device, the hybrid electric vehicle including a motor and a power battery, the motor being configured to generate power to charge the power battery, the hybrid electric vehicle power generation control device comprising:
the data acquisition module is configured to acquire charging current and charging voltage of the power battery;
a calculation module configured to calculate an actual charging power of the power battery according to a charging current of the power battery and a charging voltage of the power battery;
the control module is configured to switch off the motor if the actual charging power of the power battery meets a preset condition;
if the actual charging power of the power battery meets a preset condition, the motor is turned off, including:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a first current moment, and sending a fault warning signal if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a first delay;
recording the time for sending the fault warning signal as a second current time, and turning off the motor if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery after a second delay.
5. The hybrid vehicle power generation control device according to claim 4, wherein if the actual charging power of the power battery satisfies a preset condition, the motor is turned off, instead of:
recording a time point when the actual charging power of the power battery is changed to be larger than the maximum allowable charging power of the power battery as a third current moment, and sending a fault warning signal if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a first threshold value in a third time delay;
and recording the time for sending the fault alarm signal as a fourth current time, and turning off the motor if the number of times that the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery is not smaller than a second threshold value in a fourth time delay.
6. The hybrid vehicle power generation control device according to claim 4 or 5, further comprising a vehicle controller for controlling the generated torque of the motor to control the motor to adjust the generated power to within a maximum allowable charge power of the power battery when the failure warning signal is received.
7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the hybrid vehicle power generation control method according to any one of claims 1 to 3 when executing the computer program.
8. A hybrid vehicle comprising the hybrid vehicle power generation control device according to any one of claims 4 to 6.
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