CN113771628A - 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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- CN113771628A CN113771628A CN202010516468.1A CN202010516468A CN113771628A CN 113771628 A CN113771628 A CN 113771628A CN 202010516468 A CN202010516468 A CN 202010516468A CN 113771628 A CN113771628 A CN 113771628A
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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 invention 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 invention, 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, and 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 power battery can be effectively prevented from being overcharged due to the fault of a vehicle controller or the motor, the risk is reduced, and the personal safety of a driver is ensured.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a power generation control method and device for a hybrid electric vehicle and the hybrid electric vehicle.
Background
The current method for the whole Vehicle Controller (VCU) of the hybrid passenger vehicle with the BSG motor to feed back and generate power is as follows: according to different working conditions of the vehicle, the influence factors such as the vehicle speed, the brake pedal and the SOC are collected, the torque of feedback and power generation is calculated, the torque is limited not to exceed the maximum allowable charging power of the BMS, and then the torque is distributed to the front motor, the rear motor and the BSG motor to perform feedback or power generation.
However, the existing power generation method does not consider that once a CPU chip of the VCU fails, the feedback (or power generation) torque sent to the motor is too large, or the motor is not executed according to the target torque of the VCU, and outputs a large feedback torque, which may cause overcharging of the battery, and may cause overheating, burning and explosion of the battery for a long time, thereby endangering personal safety.
Disclosure of Invention
The embodiment of the invention 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 charging power of the power battery cannot be accurately controlled under the condition of VCU or motor failure in the conventional power generation method.
In order to achieve the above object, in a first aspect of the present invention, there is provided a power generation control method for a hybrid vehicle including a motor for generating power to charge a power battery and the power battery, the power generation control method comprising:
collecting the charging current and the 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 includes:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, 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 first delay;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
Optionally, 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 changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
Optionally, the hybrid electric vehicle further includes a vehicle control unit, and the vehicle control unit is configured to control the power generation torque of the motor to control the motor to adjust the power generation power to the maximum allowable charging power of the power battery when receiving the fault warning signal.
In a second aspect of the present invention, there is provided a power generation control device for a hybrid vehicle including a motor for generating power to charge a power battery and the power battery, comprising:
the data acquisition module is configured to acquire the charging current and the charging voltage of the power battery;
the calculation module is configured to calculate 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;
the control module 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 includes:
recording the time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, and sending a fault warning signal after first time delay if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
Optionally, 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 changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
Optionally, the hybrid electric vehicle further includes a vehicle control unit, and the vehicle control unit is configured to control the power generation torque of the motor to control the motor to adjust the power generation power to the maximum allowable charging power of the power battery when receiving the fault warning signal.
In a third aspect of the present invention, there is provided a terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the hybrid vehicle power generation control method described above when executing the computer program.
In a fourth aspect of the present invention, 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, and if the actual charging power of the power battery meets the turn-off condition of the motor, the motor is turned off to stop working of the motor, the power battery can be effectively prevented from being overcharged due to the fault of a whole vehicle controller or the motor, so that the risk is reduced, and the personal safety of a driver is ensured.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a flow chart of a method for controlling power generation of a hybrid vehicle according to a preferred embodiment of the present invention;
FIG. 2 is a diagram of a hybrid vehicle according to a preferred embodiment of the present invention;
FIG. 3 is a flow chart of the overcharge protection of the power battery provided by the preferred embodiment of the invention;
FIG. 4 is a schematic diagram of power battery overcharge monitoring provided by a preferred embodiment of the present invention;
FIG. 5 is a schematic block diagram of a hybrid vehicle power generation control apparatus according to a preferred embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal device provided in the preferred embodiment of the present invention.
Description of the reference numerals
10-terminal device, 100-processor, 101-memory, 102-computer program, 201-data receiving module, 202-computing module, 203-control module.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the present embodiment provides a power generation control method for a hybrid vehicle including a motor and a power battery, the motor generating power to charge the power battery, the power generation control method 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 and the charging voltage of the power battery;
and S300, if the actual charging power of the power battery meets a preset condition, the motor is turned off.
Therefore, 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 working of the motor, the power battery overcharging caused by the fault 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.
As shown in fig. 2, a hybrid electric vehicle according to the embodiment includes a motor, a power battery, and a vehicle controller, where the motor is used for generating power to charge the power battery. The motor is a BSG motor, and the BSG motor is driven by an automobile engine to generate electricity so as to charge the power battery. The whole vehicle manages a battery system through the BMS, for example, the charging current and charging voltage data of the power battery are collected. The method comprises the steps that a vehicle control unit is defined to work on a layer 1 and is configured to execute power generation torque calculation of a motor, obtain BMS charging torque limitation, large motor torque and BSG power generation torque distribution, receive fault warning signals, store fault codes and execute fault processing, wherein the vehicle control unit 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 vehicle control unit records the fault codes and sends the fault codes to an instrument to give an alarm so as to prompt a user that power generation and feedback functions are unavailable. The vehicle control unit according to this embodiment may be an independent CPU chip or a core of a dual-core CPU chip, and accordingly, the power generation control method according to this embodiment may be applied to an independent CPU chip or a core of a dual-core CPU chip, which is not limited in this embodiment, and this embodiment is defined to operate at layer 2. In 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 acquired by the BMS, the maximum allowable charging power of the power battery is acquired from the BMS, whether the current actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is judged, if so, whether the actual charging power of the power battery meets the turn-off 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 turn-off control is cut off, so that the BSG motor is prohibited from working.
As shown in fig. 3 and 4, in an alternative embodiment of the present invention, if the actual charging power of the power battery satisfies a preset condition, the turning off the motor includes:
recording the time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, 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 first delay;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
When the actual charging power P0 of the power battery is greater than the maximum allowable charging power P1, judging that the power generation torque sent to the BSG motor is too large due to the fault of the whole vehicle controller, or the BSG motor is not executed according to the target torque of the whole vehicle controller, so that a large torque is output, and the battery is overcharged, starting timing, for example, executing timing through a pre-configured t1 timer, waiting for the time of first delay, making the first delay be Ums, if the first delay is within the first delay time, P0< P1, waiting for the first sub-delay time, and if the first sub-delay time is over, P0< P1, determining that no fault exists, and resetting the t1 timer; and if P0> P1 at the end of the first sub-delay time, continuing waiting until the end of the first delay time, wherein the end time of the first sub-delay time is less than the end time of the first delay time. When the current time recorded by the t1 timer is greater than the first delay end time, 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 t1 timer; if so, sending a fault alarm signal to the vehicle control unit, receiving the fault alarm signal by the vehicle control unit, executing fault processing, controlling the BSG motor to adjust the generated power to the maximum allowable charging power of the power battery by controlling the generated torque of the BSG motor, and meanwhile, executing timing by a pre-configured t2 timer and waiting for a second delay time. When the current time recorded by the t2 timer is greater than or equal to a preset second delay, the second delay is set to Nms, whether the current actual charging power P0 of the power battery is greater than the maximum allowable charging power P1 of the power battery is judged, and if not, the t2 timer is cleared; if yes, the vehicle control unit is judged to be unsuccessful in executing fault processing, CAN output signals of the vehicle control unit for controlling the motor to be shut down are cut off, and therefore the BSG motor is shut down, and the BSG motor stops working.
In another alternative embodiment of the present invention, if the actual charging power of the power battery satisfies the preset condition, the turning off the motor comprises:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
When the actual charging power P0 of the power battery is greater than the maximum allowable charging power P1, judging that the power generation torque sent to the BSG motor is too large due to the fault of the whole vehicle controller, or the BSG motor is not executed according to the target torque of the whole vehicle controller, so that a large torque is output, and the battery is overcharged, calculating the actual charging power of the power battery at each sampling time point at a set frequency by executing timing through a pre-configured t3 timer, judging whether the number of times that the actual charging power of the power battery obtained within a preset third delay is greater than the maximum allowable charging power is greater than or equal to a preset first threshold value or not after a preset third delay, and if not, resetting the t3 timer; if so, sending a fault warning signal to the vehicle controller, receiving the fault warning signal by the vehicle controller and executing fault processing, controlling the BSG motor to adjust the generated power to the maximum allowable charging power of the power battery by controlling the generated torque of the BSG motor, executing timing by a pre-configured t4 timer, calculating the actual charging power of the power battery at each sampling time point by a set frequency within a preset fourth delay, judging whether the number of times that the actual charging power of the power battery obtained within the preset fourth delay is greater than the maximum allowable charging power is greater than or equal to a preset second threshold value, and if not, resetting the t4 timer; if yes, the vehicle control unit is judged to be unsuccessful in executing fault processing, CAN output signals of the vehicle control unit for controlling the motor to be shut down are cut off, and therefore the BSG motor is shut down, and the BSG motor stops working.
As shown in fig. 5, in a second aspect of the present embodiment, there is provided a power generation control device for a hybrid vehicle including a motor for generating power to charge a power battery and the power battery, the power generation control device for the hybrid vehicle including:
the data acquisition module 201 is configured to acquire charging current and charging voltage of the power battery;
a calculating module 202, configured to calculate 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 the control module 203 is configured to switch off the motor if the actual charging power of the power battery meets the preset condition.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor comprises:
recording the time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, and sending a fault warning signal after first time delay if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
Optionally, if the actual charging power of the power battery meets a preset condition, turning off the motor comprises:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
Optionally, the hybrid electric vehicle further comprises a vehicle control unit, and the vehicle control unit is configured to control the power generation torque of the motor to control the motor to adjust the power generation power to the maximum allowable charging power of the power battery when receiving the fault warning signal.
In a third aspect of the present embodiment, there is provided a terminal device 10 comprising 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 hybrid vehicle power generation control method described above 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 in the above-described method embodiments are implemented when the processor 100 executes the computer program 102. Alternatively, the processor 100, when executing the computer program 102, implements the functions of the modules/units in the above-described apparatus embodiments.
Illustratively, the computer program 102 may be partitioned into one or more modules/units, which are stored in the memory 101 and executed by the processor 100 to implement the present invention. One or more of the modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe 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 calculation 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, a palm computer, and a cloud server. Terminal device 10 may include, but is not limited to, a processor 100, a memory 101. Those skilled in the art will appreciate that fig. 6 is merely an example of a terminal device 10 and does not constitute a limitation of terminal device 10 and may include more or fewer components than shown, or some components may be combined, 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-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In a fourth aspect of the present embodiment, a hybrid vehicle is provided, which is characterized by including the hybrid vehicle power generation control device described above. According to the hybrid electric vehicle provided by the embodiment of the invention, the power generation control device of the hybrid electric vehicle is adopted, the overcharge protection of the power battery can be realized, the charging safety of the power battery can be effectively ensured when the vehicle runs, and the whole vehicle enters a safer state, so that the vehicle and personal safety is ensured.
In addition, other configurations and functions of the hybrid vehicle according to the present embodiment are known to those skilled in the art, and are not described herein in detail to reduce redundancy.
In summary, in the embodiment, the actual charging power of the power battery is safely monitored, 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, and after the preset delay, the motor is turned off when the turn-off condition of the motor is met, so that the motor stops working, thereby effectively avoiding overcharging of the power battery caused by a fault of a vehicle controller or the motor, reducing risks and ensuring personal safety of a driver.
While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications are within the scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention will not be described separately for the various possible combinations.
Those skilled in the art will appreciate that all or part of the steps in the method for implementing the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to make a single chip, a chip, or a processor (processor) execute all or part of the steps in the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of the various embodiments of the present invention is also possible, and the same shall be considered as disclosed in the embodiments of the present invention as long as it does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A power generation control method for a hybrid electric vehicle, the hybrid electric vehicle comprising a motor and a power battery, the motor being used for generating power to charge the power battery, the power generation control method for the hybrid electric vehicle comprising:
collecting the charging current and the 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.
2. The power generation control method for the hybrid vehicle according to claim 1, wherein turning off the motor if the actual charging power of the power battery satisfies a preset condition includes:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, 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 first delay;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
3. The power generation control method for the hybrid vehicle according to claim 1, wherein turning off the motor if the actual charging power of the power battery satisfies a preset condition includes:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
4. The hybrid vehicle power generation control method according to claim 2 or 3, wherein the hybrid vehicle further comprises a vehicle control unit, and the vehicle control unit is configured to control the power generation torque of the motor to control the motor to adjust the generated power to within the maximum allowable charging power of the power battery when receiving the fault warning signal.
5. The utility model provides a hybrid vehicle power generation controlling means, hybrid vehicle includes motor and power battery, the motor is used for the electricity generation, in order to right power battery charges, its characterized in that, hybrid vehicle power generation controlling means includes:
the data acquisition module is configured to acquire the charging current and the charging voltage of the power battery;
the calculation module is configured to calculate 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;
the control module is configured to switch off the motor if the actual charging power of the power battery meets a preset condition.
6. The hybrid electric vehicle power generation control device according to claim 5, wherein turning off the motor if the actual charging power of the power battery satisfies a preset condition includes:
recording the time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a first current time, and sending a fault warning signal after first time delay if the actual charging power of the power battery is larger than the maximum allowable charging power of the power battery;
and recording the moment of sending the fault alarm signal as a second current moment, and after a second delay, if the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery, turning off the motor.
7. The hybrid electric vehicle power generation control device according to claim 5, wherein turning off the motor if the actual charging power of the power battery satisfies a preset condition includes:
recording a time point when the actual charging power of the power battery changes to be larger than the maximum allowable charging power of the power battery as a third current time, 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 within a third delay;
and recording the moment of sending the fault warning signal as a fourth current moment, and turning off the motor if the actual charging power of the power battery is not less than a second threshold value within a fourth delay time and the number of times that the actual charging power of the power battery is greater than the maximum allowable charging power of the power battery is not less than the second threshold value.
8. The hybrid vehicle power generation control device according to claim 6 or 7, wherein the hybrid vehicle further comprises a vehicle control unit, and the vehicle control unit is configured to control the power generation torque of the motor to control the motor to adjust the generated power to within the maximum allowable charging power of the power battery when receiving the fault warning signal.
9. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the hybrid vehicle power generation control method according to any one of claims 1 to 4 when executing the computer program.
10. A hybrid vehicle comprising the hybrid vehicle power generation control device according to any one of claims 5 to 8.
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