CN111262502B - Starting method, device, medium and equipment of electric automobile - Google Patents
Starting method, device, medium and equipment of electric automobile Download PDFInfo
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- CN111262502B CN111262502B CN202010258018.7A CN202010258018A CN111262502B CN 111262502 B CN111262502 B CN 111262502B CN 202010258018 A CN202010258018 A CN 202010258018A CN 111262502 B CN111262502 B CN 111262502B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
- H02P29/62—Controlling or determining the temperature of the motor or of the drive for raising the temperature of the motor
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
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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
- B60L2240/421—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
- 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
- B60L2240/429—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
- Y02T10/64—Electric machine technologies in electromobility
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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
Abstract
The application discloses a starting method, a starting device, equipment and a medium of an electric automobile, wherein the method comprises the following steps: when the target electric automobile needs to be started at a temperature lower than the target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat; detecting a target output current of the motor in real time, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set; judging whether the target output current is smaller than the calibration current or not; if yes, judging whether the target time length of the target output current output by the motor is longer than the time length of the heat engine; if so, judging that the motor finishes warming, and controlling the motor to start. This is equivalent to that when the target electric vehicle is in a condition of lower than the target temperature, the motor of the target electric vehicle is automatically subjected to heat engine treatment, so that the difficulty of starting the target electric vehicle at a low temperature and the degree of abrasion of parts of the target electric vehicle can be obviously reduced.
Description
Technical Field
The invention relates to the technical field of motor control, in particular to a starting method, a starting device, a starting medium and starting equipment of an electric automobile.
Background
Electric vehicles have been widely used worldwide because of their energy-saving and environmental-friendly properties. However, when the temperature of the motor in the electric vehicle is lower than the pour point of the lubricant used for the motor, the low-temperature dynamic viscosity of the lubricant becomes large, and at this time, the lubricant loses fluidity, and the motor cannot be lubricated. In this case, the motor of the electric vehicle may be difficult to start, or even if the motor can start, the low-temperature dynamic viscosity of the lubricating oil may be too high, which may cause the wear of the parts of the electric vehicle to be increased during the starting process of the motor. At present, no effective solution exists for the problem.
Therefore, how to reduce the difficulty of starting the electric automobile at low temperature and the abrasion degree of each part of the electric automobile is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method, an apparatus, a medium and a device for starting an electric vehicle, so as to reduce the difficulty of starting the electric vehicle at a low temperature and the degree of wear of parts of the electric vehicle. The specific scheme is as follows:
a starting method of an electric automobile is applied to a controller of a target electric automobile, and comprises the following steps:
when the target electric automobile needs to be started at a temperature lower than a target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat; wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
detecting a target output current of the motor in real time, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set; the preset data set is a set which is obtained by carrying out bench calibration on the motor in advance according to the attribute parameters and the operation parameters of the motor to output current values of the motor under different working conditions;
judging whether the target output current is smaller than the calibration current or not;
if the target output current is smaller than the calibration current, judging whether the target time length for outputting the target output current by the motor is longer than the time length of a heat engine; the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
and if the target time length for outputting the target output current by the motor is longer than the heat engine time length, judging that the motor completes the heat engine, and controlling the motor to start.
Preferably, after the process of determining whether the target duration for the motor to output the target output current is greater than the duration of the heat engine, the method further includes:
and if the target time length for outputting the target output current by the motor is less than the heat engine time length, continuously executing the step of detecting the target output current of the motor in real time.
Preferably, after the process of determining whether the target output current is smaller than the calibration current, the method further includes:
if the target output current is larger than the calibration current, judging whether the target time length for outputting the target output current by the motor is larger than the maximum heat engine time length or not; the maximum heat engine time length is the maximum time length which is set according to the calibration current and the attribute characteristics of the motor and can be continuously executed by the motor;
and if the target time length for outputting the target output current by the motor is longer than the maximum heat engine time length, judging that the motor cannot complete the heat engine, and forbidding starting of the motor.
Preferably, after the process of determining whether the target duration for the motor to output the target output current is greater than the maximum warm-up duration, the method further includes:
and if the target time length for outputting the target output current by the motor is less than the maximum heat engine time length, continuously executing the step of detecting the target output current of the motor in real time.
Preferably, after determining that the electric machine fails to complete the heat engine and prohibiting the process of starting the electric machine, the method further includes:
and prompting early warning information.
Preferably, the process of acquiring the current operating parameter of the motor in the target electric vehicle includes:
and acquiring the current temperature value and/or the current load of the motor in the target electric automobile.
Preferably, the method further comprises the following steps:
and storing the preset data set to the controller in advance.
Correspondingly, the invention also discloses a starting device of the electric automobile, which is applied to a controller of a target electric automobile and comprises the following components:
the parameter acquisition module is used for acquiring current operation parameters of a motor in the target electric vehicle and controlling the motor to heat when the target electric vehicle needs to be started at a temperature lower than a target temperature; wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
the current searching module is used for detecting the target output current of the motor in real time and searching the calibration current corresponding to the current operating parameter of the motor from a preset data set; the preset data set is a set of preset current values for calibrating a rack in advance according to the attribute parameters of the motor;
the current judgment module is used for judging whether the target output current is smaller than the calibration current or not;
the time length judging module is used for judging whether the target time length of the target output current output by the motor is greater than the time length of the heat engine or not when the judgment result of the current judging module is yes; the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
and the motor starting module is used for judging that the motor finishes the heat engine and controlling the motor to start when the judgment result of the duration judgment module is yes.
Correspondingly, the invention also discloses a starting device of the electric automobile, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of the starting method of the electric vehicle as disclosed in the foregoing when the computer program is executed.
Accordingly, the present invention also discloses a computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for starting an electric vehicle as disclosed in the foregoing.
Therefore, in the invention, firstly, the motor is calibrated in advance according to the attribute parameters and the operation parameters of the motor in the target electric vehicle to obtain the current values which can be output by the motor under different working conditions, and the current values which can be output by the motor under different working conditions are summarized to obtain the preset data set. When the target electric automobile needs to be started at a temperature lower than the target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat; detecting a target output current of the motor in real time in the process of warming up the motor, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set; judging whether the target output current of the motor is smaller than the calibration current or not, and if the target output current of the motor is smaller than the calibration current, judging whether the target duration of the target output current is larger than the duration of the heat engine or not; and if the target time length for the motor to output the target output current is longer than the time length of the heat engine, judging that the motor completes the heat engine. This means that the motor of the target electric vehicle is automatically subjected to a heat engine treatment when the target electric vehicle is at a temperature lower than the target temperature, so that the temperature of the lubricating oil can be higher than the pour point, and the motor can be lubricated. Obviously, after the motor finishes warming up, the motor is started, so that the difficulty of starting the target electric automobile at low temperature and the abrasion degree of each part of the target electric automobile can be obviously reduced. Correspondingly, the starting device, the equipment and the medium for the electric automobile, which are provided by the invention, also have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a starting method of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a starting method of another electric vehicle according to an embodiment of the present invention;
fig. 3 is a structural diagram of a starting apparatus of an electric vehicle according to an embodiment of the present invention;
fig. 4 is a structural diagram of a starting apparatus of an electric vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a starting method of an electric vehicle according to an embodiment of the present invention, where the starting method includes:
step S11: when the target electric automobile needs to be started at a temperature lower than the target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat;
wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
step S12: detecting a target output current of the motor in real time, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set;
the preset data set is a set which is obtained by carrying out bench calibration on the motor in advance according to the attribute parameters and the operation parameters of the motor and outputting current values of the motor under different working conditions;
step S13: judging whether the target output current is smaller than the calibration current or not;
step S14: if the target output current is smaller than the calibration current, judging whether the target time length for outputting the target output current by the motor is longer than the time length of the heat engine;
the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
step S15: and if the target time length for outputting the target output current by the motor is longer than the time length of the heat engine, judging that the motor completes the heat engine, and controlling the motor to start.
In the present embodiment, a controller of a target electric vehicle is used as an execution subject. In practical applications, lubricating oils used in different types of electric vehicles have different properties, so that different lubricating oils have different pour points. Therefore, in the present embodiment, the target temperature is a temperature set according to the property parameter of the lubricant used by the motor in the target electric vehicle, that is, if the temperature of the motor in the target electric vehicle is lower than the pour point, it indicates that the lubricant used by the motor in the target electric vehicle loses fluidity, so that the lubricant cannot lubricate the motor, and thus the motor cannot be started, or even if the motor in the target electric vehicle can be started, the low-temperature kinematic viscosity of the lubricant is too high, so that the wear degree of the parts in the target electric vehicle is aggravated during the starting of the motor.
In the present embodiment, a starting method of an electric vehicle is provided, by which the starting difficulty of the target electric vehicle at low-temperature starting and the wear degree of each component of the target electric vehicle can be significantly reduced.
Specifically, in this embodiment, firstly, the motor is subjected to bench calibration according to the attribute parameters and the operation parameters of the motor in the target electric vehicle, and a set of output current values of the motor in the target electric vehicle under different working conditions, that is, a preset data set, is obtained. Specifically, in practical applications, in order to improve the speed and efficiency of the controller in searching the calibration current corresponding to the current operating parameter of the motor from the preset data set, the preset data set may be set in a table form.
Therefore, when the target electric automobile needs to be started at a temperature lower than the target temperature, the current operation parameters of the motor in the target electric automobile are obtained, and the motor is controlled to perform heat engine. In the process of warming up a motor of a target electric automobile, the target output current of the motor is detected in real time, and the calibration current corresponding to the current operation parameters of the motor is searched from a preset data set. That is, the calibration current corresponding to the current operation condition of the motor is searched from the preset data set.
When the calibration current corresponding to the current operation parameter of the motor is searched and obtained from the preset data set, the current heat engine condition of the motor can be judged and obtained through the searched calibration current. That is, in this embodiment, it is first determined whether the target output current of the electric machine is smaller than the calibration current, and if the target output current output by the electric machine is smaller than the calibration current, it is determined whether the target duration for the electric machine to output the target output current is longer than the heat engine duration, and if the target duration for the electric machine to output the target output current is longer than the heat engine duration, it may be determined that the electric machine of the target electric vehicle completes the heat engine.
It should be noted that, in the present embodiment, the time period for the heat engine of the electric machine in the target electric vehicle is the time period required by the electric machine to complete the heat engine, which is set according to the calibration current and the attribute characteristics of the electric machine. It is conceivable that whether the motor of the target electric vehicle can complete the warming-up can be determined by comparing the target duration of the target output current output by the motor of the target electric vehicle with the warming-up duration.
Obviously, when the electric machine of the target electric vehicle completes the heat engine, the overall temperature of the electric machine rises, and at the same time, the temperature of the lubricating oil carried in the electric machine also rises. It is conceivable that the lubricating oil in the motor is returned to a flowing state and functions to lubricate the motor when the temperature of the lubricating oil carried in the motor reaches a pour point or higher. It is conceivable that a better start-up of the motor is possible when the lubricating oil carried in the motor is able to achieve the purpose of lubricating the motor. And when the lubricating oil can achieve the purpose of lubricating the motor, the abrasion degree of the motor to each part in the target electric automobile in the starting process can be reduced.
Therefore, in this embodiment, firstly, the motor is calibrated in advance according to the attribute parameters and the operation parameters of the motor in the target electric vehicle to obtain the current values that can be output by the motor under different working conditions, and the current values that can be output by the motor under different working conditions are summarized to obtain the preset data set. When the target electric automobile needs to be started at a temperature lower than the target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat; detecting a target output current of the motor in real time in the process of warming up the motor, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set; judging whether the target output current of the motor is smaller than the calibration current or not, and if the target output current of the motor is smaller than the calibration current, judging whether the target duration of the target output current is larger than the duration of the heat engine or not; and if the target time length for the motor to output the target output current is longer than the time length of the heat engine, judging that the motor completes the heat engine. This means that the motor of the target electric vehicle is automatically subjected to a heat engine treatment when the target electric vehicle is at a temperature lower than the target temperature, so that the temperature of the lubricating oil can be higher than the pour point, and the motor can be lubricated. Obviously, after the motor finishes warming up, the motor is started, so that the difficulty of starting the target electric automobile at low temperature and the abrasion degree of each part of the target electric automobile can be obviously reduced.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and fig. 2 is a flowchart of another starting method for an electric vehicle according to the embodiment of the present invention. As a preferred embodiment, the step S14: after the process of judging whether the target duration of the target output current output by the motor is greater than the duration of the heat engine, the method further comprises the following steps:
and if the target time length for outputting the target output current by the motor is less than the time length of the heat engine, continuously executing the step of detecting the target output current of the motor in real time.
It can be understood that the electric machine of the target electric vehicle usually needs a certain time in the process of executing the heat engine, so that in the actual operation process, if the target time length for the electric machine to output the target output current is less than the heat engine time length, it indicates that the electric machine of the target electric vehicle is still in the heat engine stage. In this case, the step of detecting the target output current of the electric machine in real time may be continued, thereby enabling the controller of the target electric vehicle to know the time when the electric machine completes the heat engine at the first time.
Obviously, the technical scheme provided by the embodiment can further improve the user experience of the user when the user uses the target electric vehicle.
Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, please refer to fig. 2, and fig. 2 is a flowchart of another starting method for an electric vehicle according to the embodiment of the present invention. As a preferred embodiment, the step S13: after the process of judging whether the target output current is smaller than the calibration current, the method further comprises the following steps:
step S16: if the target output current is larger than the calibration current, judging whether the target time length of the target output current output by the motor is larger than the maximum heat engine time length or not;
the maximum heat engine time length is the maximum time length which is set according to the calibration current and the attribute characteristics of the motor and can be continuously executed by the motor;
step S17: and if the target time length for outputting the target output current by the motor is longer than the maximum heat engine time length, judging that the motor cannot complete heat engine, and forbidding starting of the motor.
It can be understood that, in the practical application process, during the process of performing heat engine on the electric motor of the target electric vehicle, a stalling phenomenon may occur on the electric motor of the target electric vehicle or a phenomenon that the electric motor fails to complete the heat engine may occur. Therefore, in the present embodiment, a specific implementation method of how to determine that the electric machine fails to complete the heat engine is provided.
Specifically, in the actual operation process, firstly, the maximum time length that the motor can continuously execute the heat engine is set according to the searched calibration current and the attribute characteristics of the motor, and if the target output current output by the motor is greater than the calibration current and the target time length that the motor outputs the target output current is greater than the maximum heat engine time length that the motor can execute in the process that the motor of the target electric automobile executes the heat engine, it is indicated that the motor of the target electric automobile cannot complete the heat engine. In this case, in order to reduce the starting difficulty of the target electric vehicle when the target electric vehicle is started at a temperature lower than the target temperature and reduce the damage to the parts of the target electric vehicle during the starting process of the target electric vehicle at a temperature lower than the target temperature, the starting of the motor may be prohibited.
Therefore, by the technical scheme provided by the embodiment, the service life of the motor in the target electric automobile in the use process can be further prolonged.
As a preferred embodiment, the step S16: after the process of judging whether the target time length of the target output current output by the motor is greater than the maximum heat engine time length, the method further comprises the following steps:
and if the target time length for outputting the target output current by the motor is less than the maximum heat engine time length, continuously executing the step of detecting the target output current of the motor in real time.
It can be understood that, in the process of executing the heat engine by the electric machine of the target electric vehicle, if the target output current output by the electric machine is greater than the calibration current, and the target time duration for the electric machine to output the target output current is less than the maximum heat engine time duration of the electric machine, it indicates that the electric machine of the target electric vehicle is still in the heat engine stage. In this case, the step of detecting the target output current of the motor in real time may be continuously performed.
Obviously, the technical scheme provided by the embodiment can further ensure the comprehensiveness and integrity of the technical scheme provided by the application.
As a preferred embodiment, the above steps: after determining that the electric machine fails to complete the heat engine and prohibiting the process of starting the electric machine, the method further includes:
and prompting early warning information.
It can be conceived that, if the motor of the target electric vehicle fails to complete the heat engine, it indicates that the motor of the target electric vehicle has failed, or that the heat engine execution logic of the motor has been abnormal, so when it is determined that the motor of the target electric vehicle fails to complete the heat engine, the user can also be made aware that the motor of the target electric vehicle fails to complete the heat engine in time, that is, the heat engine fails, by prompting the warning information.
Obviously, when the user learns that the motor of the target electric automobile cannot complete the heat engine, the motor can be maintained in time, or the heat engine execution logic of the motor is checked and changed, so that the economic loss of the target electric automobile can be relatively reduced, and the user experience of the user in using the target electric automobile can be further improved.
Based on the above embodiments, this embodiment further describes and optimizes the technical solution, and as a preferred implementation, the above steps: the process of obtaining current operating parameters of a motor in a target electric vehicle includes:
and acquiring the current temperature value and/or the current load of the motor in the target electric automobile.
Specifically, in this embodiment, in the process of obtaining the current operation parameters of the motor in the target electric vehicle, the current temperature value and/or the current load of the motor are obtained. The current value output by the electric machine is mainly determined by the current temperature value and/or the current load of the electric machine in the process of executing the heat engine by the electric machine. Therefore, in the present embodiment, in order to further reduce the parameter values obtained by the electric machine in the target electric vehicle, only the operation parameters that affect the electric machine most importantly during the execution of the heat engine are obtained.
Therefore, by the technical scheme provided by the embodiment, the overall execution efficiency of the controller of the target electric vehicle when the current operation parameters of the motor are acquired can be further improved.
Based on the above embodiment, this embodiment further describes and optimizes the technical solution, and as a preferred implementation, the starting method of the electric vehicle further includes:
and storing a preset data set to the controller in advance.
It can be understood that, since the main execution body of the electric vehicle starting method provided by the present application is the controller in the target electric vehicle, in this embodiment, in order to further improve the search speed and the search efficiency when the controller searches for the calibration current corresponding to the current operating parameter of the motor from the preset data set, the preset data set is stored in the controller of the target electric vehicle in advance. It is contemplated that when the predetermined data set is stored in the controller, the cumbersome steps of the controller searching for a calibration current corresponding to the current operating parameters of the motor from a remote memory may be avoided.
Obviously, by the technical scheme provided by the embodiment, not only can the speed and the efficiency of the controller in searching the calibration current from the preset data set be relatively improved, but also the overall execution efficiency of the controller can be further improved.
Referring to fig. 3, fig. 3 is a structural diagram of a starting device of an electric vehicle according to an embodiment of the present invention, the starting device includes:
the parameter obtaining module 21 is configured to obtain a current operation parameter of a motor in the target electric vehicle and control the motor to perform heat engine when the target electric vehicle needs to be started at a temperature lower than a target temperature; wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
the current searching module 22 is used for detecting the target output current of the motor in real time and searching the calibration current corresponding to the current operation parameter of the motor from a preset data set; the preset data set is a set of preset current values calibrated by a rack in advance according to the attribute parameters of the motor;
the current judging module 23 is configured to judge whether the target output current is smaller than the calibration current;
the duration judging module 24 is used for judging whether the target duration of the target output current output by the motor is greater than the duration of the heat engine when the judgment result of the current judging module is yes; the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
and the motor starting module 25 is used for judging that the motor finishes the heat engine and controlling the motor to start when the judgment result of the duration judgment module is yes.
Preferably, the starting apparatus for an electric vehicle further includes:
and the first judgment module is used for continuously executing the step of detecting the target output current of the motor in real time if the target time length for outputting the target output current by the motor is less than the time length of the heat engine after judging whether the target time length for outputting the target output current by the motor is greater than the time length of the heat engine.
Preferably, the starting apparatus for an electric vehicle further includes:
the second judging module is used for judging whether the target output current is smaller than the calibration current or not, and further comprises: if the target output current is larger than the calibration current, judging whether the target time length of the target output current output by the motor is larger than the maximum heat engine time length or not; the maximum heat engine time length is the maximum time length which is set according to the calibration current and the attribute characteristics of the motor and can be continuously executed by the motor;
and the judgment result module is used for judging that the motor fails to complete the heat engine and forbidding starting of the motor if the target time length for outputting the target output current by the motor is greater than the maximum heat engine time length.
Preferably, the starting apparatus for an electric vehicle further includes:
and the third judging module is used for continuously executing the step of detecting the target output current of the motor in real time if the target time length of the target output current output by the motor is less than the maximum heat engine time length after the process of judging whether the target time length of the target output current output by the motor is greater than the maximum heat engine time length.
Preferably, the starting apparatus for an electric vehicle further includes:
and the early warning information module is used for prompting early warning information after the motor is judged to be failed to complete the heat engine and the process of starting the motor is forbidden.
Preferably, the parameter obtaining module 21 includes:
and the parameter acquisition unit is used for acquiring the current temperature value and/or the current load of the motor in the target electric automobile.
Preferably, the starting apparatus for an electric vehicle further includes:
and the data storage module is used for storing the preset data set to the controller in advance.
The starting device of the electric automobile provided by the embodiment of the invention has the beneficial effects of the disclosed starting method of the electric automobile.
Referring to fig. 4, fig. 4 is a structural diagram of a starting device of an electric vehicle according to an embodiment of the present invention, where the starting device includes:
a memory 31 for storing a computer program;
a processor 32 for implementing the steps of the starting method of the electric vehicle as disclosed in the foregoing when executing the computer program.
The starting equipment of the electric automobile provided by the embodiment of the invention has the beneficial effects of the disclosed starting method of the electric automobile.
Correspondingly, the embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when being executed by a processor, the computer program realizes the steps of the starting method of the electric automobile disclosed in the foregoing.
The computer-readable storage medium provided by the embodiment of the invention has the beneficial effects of the starting method of the electric automobile disclosed in the foregoing.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The starting method, the starting device, the starting equipment and the starting medium of the electric vehicle provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A starting method of an electric vehicle is characterized in that a controller applied to a target electric vehicle comprises the following steps:
when the target electric automobile needs to be started at a temperature lower than a target temperature, acquiring current operation parameters of a motor in the target electric automobile, and controlling the motor to heat; wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
detecting a target output current of the motor in real time, and searching a calibration current corresponding to the current operation parameter of the motor from a preset data set; the preset data set is a set which is obtained by carrying out bench calibration on the motor in advance according to the attribute parameters and the operation parameters of the motor to output current values of the motor under different working conditions;
judging whether the target output current is smaller than the calibration current or not;
if the target output current is smaller than the calibration current, judging whether the target time length for outputting the target output current by the motor is longer than the time length of a heat engine; the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
if the target time length for outputting the target output current by the motor is longer than the heat engine time length, judging that the motor completes the heat engine, and controlling the motor to start;
after the process of determining whether the target output current is smaller than the calibration current, the method further includes:
if the target output current is larger than the calibration current, judging whether the target time length for outputting the target output current by the motor is larger than the maximum heat engine time length or not; the maximum heat engine time length is the maximum time length which is set according to the calibration current and the attribute characteristics of the motor and can be continuously executed by the motor;
and if the target time length for outputting the target output current by the motor is longer than the maximum heat engine time length, judging that the motor cannot complete the heat engine, and forbidding starting of the motor.
2. The starting method of an electric vehicle according to claim 1, wherein the process of determining whether the target period of time for which the motor outputs the target output current is longer than a warm-up period of time is followed by further comprising:
and if the target time length for outputting the target output current by the motor is less than the heat engine time length, continuously executing the step of detecting the target output current of the motor in real time.
3. The starting method of an electric vehicle according to claim 1, wherein the process of determining whether the target period of time for which the motor outputs the target output current is longer than a maximum warm-up period of time is followed by further comprising:
and if the target time length for outputting the target output current by the motor is less than the maximum heat engine time length, continuously executing the step of detecting the target output current of the motor in real time.
4. The starting method of an electric vehicle according to claim 1, wherein after determining that the electric machine fails to complete the heat engine and prohibiting a process of starting the electric machine, further comprising:
and prompting early warning information.
5. The starting method of the electric vehicle according to claim 1, wherein the step of obtaining the current operating parameters of the motor in the target electric vehicle comprises:
and acquiring the current temperature value and/or the current load of the motor in the target electric automobile.
6. The starting method of the electric vehicle according to any one of claims 1 to 5, further comprising:
and storing the preset data set to the controller in advance.
7. A starting device of an electric vehicle is characterized in that a controller applied to a target electric vehicle comprises:
the parameter acquisition module is used for acquiring current operation parameters of a motor in the target electric vehicle and controlling the motor to heat when the target electric vehicle needs to be started at a temperature lower than a target temperature; wherein the target temperature is a temperature set according to attribute parameters of lubricating oil used by the motor;
the current searching module is used for detecting the target output current of the motor in real time and searching the calibration current corresponding to the current operating parameter of the motor from a preset data set; the preset data set is a set of preset current values for calibrating a rack in advance according to the attribute parameters of the motor;
the current judgment module is used for judging whether the target output current is smaller than the calibration current or not;
the time length judging module is used for judging whether the target time length of the target output current output by the motor is greater than the time length of the heat engine or not when the judgment result of the current judging module is yes; the time length of the heat engine is the time length required by the motor to complete the heat engine according to the calibration current and the attribute characteristics of the motor;
the motor starting module is used for judging that the motor finishes the heat engine and controlling the motor to start when the judgment result of the duration judgment module is yes;
the second determining module, configured to after the process of determining whether the target output current is smaller than the calibration current, further include: if the target output current is larger than the calibration current, judging whether the target time length for outputting the target output current by the motor is larger than the maximum heat engine time length or not; the maximum heat engine time length is the maximum time length which is set according to the calibration current and the attribute characteristics of the motor and can be continuously executed by the motor;
and the judgment result module is used for judging that the motor cannot complete the heat engine and forbidding starting of the motor if the target time length for outputting the target output current by the motor is greater than the maximum heat engine time length.
8. A starting apparatus of an electric vehicle, characterized by comprising:
a memory for storing a computer program;
processor for implementing the steps of a method for starting an electric vehicle according to any one of claims 1 to 6 when executing said computer program.
9. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of a method for starting an electric vehicle according to any one of claims 1 to 6.
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| CN202010258018.7A CN111262502B (en) | 2020-04-03 | 2020-04-03 | Starting method, device, medium and equipment of electric automobile |
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| CN202010258018.7A CN111262502B (en) | 2020-04-03 | 2020-04-03 | Starting method, device, medium and equipment of electric automobile |
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| JP4899549B2 (en) * | 2005-10-31 | 2012-03-21 | ダイキン工業株式会社 | Compressor operating method of refrigeration apparatus and refrigeration apparatus |
| US8310193B2 (en) * | 2010-01-12 | 2012-11-13 | Hamilton Sundstrand Corporation | Minimum temperature control for electromechanical actuator |
| CN103419653B (en) * | 2012-05-22 | 2016-04-27 | 比亚迪股份有限公司 | The power system of electronlmobil, electronlmobil and heating of battery method |
| JP5911827B2 (en) * | 2013-06-25 | 2016-04-27 | 株式会社沖データ | Image forming apparatus |
| CN105717917B (en) * | 2016-04-25 | 2018-03-02 | 上汽大众汽车有限公司 | The automatic calibration method of new-energy automobile motor stand |
| CN106394265B (en) * | 2016-05-27 | 2019-08-06 | 奇瑞汽车股份有限公司 | The method and apparatus that quick charge is carried out to electric car |
| CN109873575B (en) * | 2019-02-27 | 2021-06-29 | 深圳英驱新能源有限公司 | Starting method and device of motor system in automobile and ultralow temperature environment |
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