CN117755096A - Electric drive system heating method and device, vehicle and computer storage medium - Google Patents

Electric drive system heating method and device, vehicle and computer storage medium Download PDF

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Publication number
CN117755096A
CN117755096A CN202311780315.8A CN202311780315A CN117755096A CN 117755096 A CN117755096 A CN 117755096A CN 202311780315 A CN202311780315 A CN 202311780315A CN 117755096 A CN117755096 A CN 117755096A
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China
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axis
current
vehicle
output current
motor
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Chinese (zh)
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程伟
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Shanghai Rox Intelligent Technology Co Ltd
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Shanghai Rox Intelligent Technology Co Ltd
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Priority to CN202311780315.8A priority Critical patent/CN117755096A/en
Publication of CN117755096A publication Critical patent/CN117755096A/en
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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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Abstract

The application discloses an electric drive system heating method, an electric drive system heating device, a vehicle and a computer storage medium, wherein the electric drive system heating method comprises the following steps: acquiring the current vehicle state of a vehicle, wherein the vehicle state comprises a driving state or a parking state; determining an output current of a d-axis and an output current of a q-axis of the motor according to the vehicle state when the vehicle is detected to be in a heating mode; and outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value. Through the mode, the temperature of the cooling liquid of the electric drive system can be increased, and the reduction of the cruising ability of the electric vehicle caused by low temperature of the cooling liquid is avoided.

Description

Electric drive system heating method and device, vehicle and computer storage medium
Technical Field
The application belongs to the technical field of electric vehicles, and particularly relates to a heating method and device of an electric drive system, a vehicle and a computer storage medium.
Background
The development of electric vehicles is increasingly rapid, and the application scene of the electric vehicles is also increasingly wide, so that the power batteries are required to adapt to the temperature changes of different areas, and meanwhile, enough heating heat is also provided for the carriages, so that the riding comfort is improved, and the electric vehicles can be ensured to be normally used in cold climates.
However, the power battery loaded in the electric automobile cannot be charged and discharged under a low-temperature environment, so that the capability of the driving system or the charging system is limited under the low-temperature environment, and enough power cannot be rapidly provided, thereby affecting the normal use of users.
Disclosure of Invention
The embodiment of the application provides a heating method and device for an electric drive system, a vehicle and a computer storage medium, which can improve the temperature of cooling liquid of the electric drive system and avoid the reduction of the cruising ability of the electric vehicle caused by low temperature of the cooling liquid.
In a first aspect, an embodiment of the present application provides a heating method of an electric drive system, where the electric drive system includes a motor controller and a motor, the method includes:
acquiring the current vehicle state of a vehicle, wherein the vehicle state comprises a driving state or a parking state;
determining an output current of a d-axis and an output current of a q-axis of the motor according to the vehicle state when the vehicle is detected to be in a heating mode;
and outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value.
In a second aspect, embodiments of the present application provide an electric drive system heating apparatus, the electric drive system including a motor controller and a motor, the apparatus comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the current vehicle state of a vehicle, and the vehicle state comprises a driving state or a parking state;
a determining module configured to determine an output current of a d-axis and an output current of a q-axis of the motor according to the vehicle state in a case where the vehicle is detected to be in a heating mode;
and the output module is used for outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value.
In a third aspect, embodiments of the present application provide a computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement a method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a computer program product for implementing a method according to the first aspect.
In a fifth aspect, embodiments of the present application provide a vehicle comprising the computer storage medium of the third aspect, or the computer program product of the fourth aspect.
According to the heating method, the heating device, the heating vehicle and the heating computer storage medium of the electric drive system, the d-axis output current and the q-axis output current of the motor can be determined according to the driving state and the stopping state of the vehicle, and the d-axis output current and the q-axis output current are output through the motor controller, so that the motor runs in a preset time period to generate a target heat value, the temperature of cooling liquid of the electric drive system is improved, and the reduction of the cruising ability of the electric vehicle caused by low temperature of the cooling liquid is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.
FIG. 1 is a schematic flow chart of a heating method of an electric drive system according to an embodiment of the present disclosure;
FIG. 2a is a schematic diagram of d-axis output current and q-axis output current provided by one embodiment of the present application;
FIG. 2b is a schematic flow chart of a heating method of an electric drive system according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a heating device of an electric drive system according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a vehicle according to still another embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Fig. 1 is a schematic flow chart of a heating method of an electric drive system according to an embodiment of the present application. As shown in fig. 1, the heating method of the electric driving system provided in the embodiment of the present application, where the electric driving system includes a motor controller and a motor, includes the following steps 101 to 103, where:
step 101, acquiring the current vehicle state of the vehicle, wherein the vehicle state comprises a driving state or a parking state.
Step 102, determining the output current of the d axis and the output current of the q axis of the motor according to the state of the vehicle when the vehicle is detected to be in a heating mode.
For example, in a case where the vehicle controller of the vehicle sends a heating request, it may be determined that the vehicle is in the heating mode, the heating request may be automatically triggered by the vehicle controller according to the temperature detected by the temperature sensor, and the heating request is sent, for example, in a case where the temperature detected by the temperature sensor is less than a preset temperature, the vehicle controller sends the heating request to the motor controller. In addition, the heating request can also be triggered based on user operation, for example, the user triggers the whole vehicle controller to send out the heating request by pressing the heating control or through voice input.
In the case where the vehicle is detected to be in the heating mode, that is, in the case where the entire vehicle controller of the vehicle is detected to issue a heating request, the output current of the d-axis and the output current of the q-axis of the motor are determined according to the state of the vehicle.
In the driving state and the parking state, the output current of the d axis and the output current of the q axis of the corresponding motors are different. For example, in a driving state, an output current of a d-axis and an output current of a q-axis of the motor may be determined according to a torque and a rotational speed of the motor; in the stopped state, the preset two current values may be respectively used as the output current of the d axis and the output current of the q axis of the motor, which is not limited herein.
And 103, outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value.
After the d-axis output current and the q-axis output current are determined, the d-axis output current and the q-axis output current are output by the motor controller to control the motor such that the motor operates for a preset period of time to generate a target heat value. The preset time period can be set according to practical situations, for example, the preset time period can be 10 minutes or 20 minutes, and is not limited herein, if the target heat value generated by the motor running in the preset time period is required to enable the temperature of the cooling liquid of the electric drive system to rise to the target temperature, the d-axis output current and the q-axis output current with corresponding magnitudes can be set so as to achieve the purpose of rising to the target temperature.
In this embodiment, the d-axis output current and the q-axis output current of the motor may be determined according to the driving state and the parking state of the vehicle, and output through the motor controller, so that the motor operates in a preset time period to generate a target heat value, thereby improving the temperature of the cooling liquid of the electric drive system, and avoiding the decrease of the cruising ability of the electric vehicle caused by the low temperature of the cooling liquid.
In an embodiment of the present application, the determining, when the vehicle is detected to be in the heating mode, the output current of the d-axis and the output current of the q-axis of the motor according to the vehicle state includes:
if the vehicle is in a driving state, acquiring a first current of a d-axis of the motor;
acquiring torque and rotation speed of the motor under the condition that the vehicle is detected to be in a heating mode;
obtaining a current calibration value of the d axis according to the torque and the rotating speed;
adjusting the first current by using the current calibration value to obtain d-axis output current;
and obtaining the output current of the q-axis according to the output current of the d-axis and the constant torque curve.
In this embodiment, the first current may be a d-axis current of the vehicle in a case where the heating mode is not turned on, and Δid is increased based on the first current by taking the first current as a reference, where Δid is a current calibration value. Specifically, in the case where it is detected that the vehicle is in the heating mode, that is, in the case where it is detected that the entire vehicle controller of the vehicle issues a heating request, the torque and the rotation speed of the motor are acquired.
And obtaining a target current calibration value corresponding to the torque and the rotating speed from the pre-obtained calibration relation, and taking the target current calibration value as the current calibration value of the d axis, wherein the calibration relation comprises a plurality of groups of corresponding relations obtained through calibration, and each group of corresponding relations comprises a first torque, a first rotating speed and a corresponding first calibration value.
The calibration relation is obtained in advance through a calibration mode, the calibration relation comprises a plurality of groups of corresponding relations, and each group of corresponding relations comprises a first torque, a first rotating speed and a corresponding first calibration value. And under the condition that the motor is in the first torque and the first rotating speed, adjusting d-axis current, wherein the adjusted d-axis current is the maximum current value which can normally work by the motor controller so as to achieve the maximum stable heating capacity, and subtracting the d-axis current before adjustment from the adjusted d-axis current to obtain a first calibration value corresponding to the first torque and the first rotating speed. Through the calibration mode, multiple groups of corresponding relations can be obtained.
After the torque and the rotating speed of the motor are obtained, the corresponding target current calibration value can be obtained by comparing the torque and the rotating speed with a plurality of groups of corresponding relations, and the target current calibration value is the current calibration value of the d axis.
Further, the first current and the current calibration value are added to obtain an output current of the d axis.
After the d-axis output current is determined, the q-axis output current can be obtained according to a constant torque curve, wherein the constant torque curve is used for describing that the torque output by the motor is constant, the torque can be kept constant by increasing the current of the motor, and after the d-axis output current is determined, the q-axis output current can be calculated according to a constant torque principle.
Through the mode, the d-axis output current and the q-axis output current of the motor in the heating mode can be obtained and output through the motor controller, so that the motor operates in a preset time period to generate a target heat value, the temperature of cooling liquid of the electric drive system is improved, and the reduction of the cruising ability of the electric vehicle caused by low temperature of the cooling liquid is avoided.
In an embodiment of the present application, the determining, when the vehicle is detected to be in the heating mode, the output current of the d-axis and the output current of the q-axis of the motor according to the vehicle state includes:
acquiring the rotating speed of the motor under the condition that the vehicle is in a parking state;
and under the condition that the rotating speed is in a preset rotating speed range and the vehicle is detected to be in a heating mode, determining that the output current of the d axis is a first preset current and the output current of the q axis is a second preset current.
In the foregoing, the preset rotation speed range may be [ -50rpm,50rpm ], and in the parking state, if the rotation speed of the motor is within the preset rotation speed range, and if the vehicle is detected to be in the heating mode, that is, the whole vehicle controller is detected to send a heating request, it is determined that the output current of the d-axis is a first preset current, and the output current of the q-axis is a second preset current, where the first preset current is a sinusoidal current and the second preset current is 0, as shown in fig. 2a, where the output current of the d-axis and the output current of the q-axis are shown in the drawing. The amplitude and frequency of the sinusoidal current may be determined by gantry calibration.
Fig. 2b is a schematic flow chart of a heating method of an electric drive system according to an embodiment of the present application, where, as shown in fig. 2b, the heating method of the electric drive system includes the following steps:
a Vehicle Control Unit (VCU) requests a torque mode, and a pedal release and a gear are positioned in a D gear, so that the vehicle is judged to be in a driving state;
under the condition that the vehicle is in a driving state, if the VCU is detected to send a heating request, id0 and iq0 in a whole vehicle torque demand current instruction are obtained when heating is not started;
and obtaining delta id from a calibration relation according to the torque and the rotating speed of the motor, enabling the current to be close to a continuous current value, achieving the maximum stable heating capacity, calculating the regulated id1 = id0+ delta id according to a constant torque curve, obtaining the regulated iq1, and outputting new current instructions id1 and iq1 through a motor controller.
When the vehicle is not in a driving state, the VCU requests parking, and determines that the vehicle is in a parking state. If the vehicle is in a stopped state and the motor speed is between-50 rpm and 50rpm, id1 is set to a sinusoidal current, iq1=0, in the event that a heating request from the VCU is detected.
The heating method of the electric drive system can be used for all hybrid electric vehicles and pure electric vehicles.
According to the heating method of the electric drive system, hardware cost is not increased, current distribution of d axis and q axis of the electric drive system is controlled only through software, corresponding control methods are respectively formulated for two working states of parking and driving, the heating power of the electric drive system can reach 2KW within 30min in an actual test mode, and the heating power of the electric drive system is fully utilized to quickly heat a battery.
Fig. 3 shows a structural diagram of a heating device of an electric drive system according to an embodiment of the present application. As shown in fig. 3, an electric drive system heating apparatus 300, the electric drive system including a motor controller and a motor, includes:
an obtaining module 301, configured to obtain a current vehicle state of a vehicle, where the vehicle state includes a driving state or a parking state;
a determining module 302 for determining an output current of the d-axis and an output current of the q-axis of the motor according to the vehicle state in a case where the vehicle is detected to be in a heating mode;
and an output module 303, configured to output the output current of the d-axis and the output current of the q-axis as output signals of the motor controller, so that the motor operates in a preset period of time to generate a target heat value.
In an embodiment of the present application, the determining module 302 includes:
the first acquisition submodule is used for acquiring a first current of the d axis of the motor if the vehicle is in a driving state;
the second acquisition sub-module is used for acquiring the torque and the rotating speed of the motor under the condition that the vehicle is detected to be in a heating mode;
the third acquisition submodule is used for obtaining a current calibration value of the d axis according to the torque and the rotating speed;
the fourth acquisition submodule is used for adjusting the first current by using the current calibration value to obtain d-axis output current;
and a fifth acquisition submodule, configured to obtain an output current of the q-axis according to the output current of the d-axis and the constant torque curve.
In an embodiment of the present application, the third obtaining submodule is specifically configured to:
and obtaining a target current calibration value corresponding to the torque and the rotating speed from the pre-obtained calibration relation, and taking the target current calibration value as the current calibration value of the d axis, wherein the calibration relation comprises a plurality of groups of corresponding relations obtained through calibration, and each group of corresponding relations comprises a first torque, a first rotating speed and a corresponding first calibration value.
In an embodiment of the present application, the fourth obtaining submodule is specifically configured to:
and adding the first current and the current calibration value to obtain the d-axis output current.
In an embodiment of the present application, the determining module 302 includes:
a sixth obtaining submodule, configured to obtain a rotation speed of the motor when the vehicle is in a parking state;
and the seventh acquisition submodule is used for determining that the output current of the d axis is a first preset current and the output current of the q axis is a second preset current when the rotating speed is in a preset rotating speed range and the vehicle is detected to be in a heating mode.
In an embodiment of the present application, the seventh obtaining submodule is specifically configured to:
and under the condition that the rotating speed is in a preset rotating speed range and the vehicle is detected to be in a heating mode, determining that the output current of the d axis is sinusoidal, and the output current of the q axis is 0.
The heating device 300 for an electric drive system provided in this embodiment can implement each process implemented by the foregoing heating method embodiment for an electric drive system, and in order to avoid repetition, a detailed description is omitted here.
Fig. 4 shows a schematic hardware structure of a vehicle for implementing a heating method of an electric drive system according to an embodiment of the present application.
The vehicle may include a processor 601 and a memory 602 storing computer program instructions.
In particular, the processor 601 may include a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.
Memory 602 may include mass storage for data or instructions. By way of example, and not limitation, memory 602 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the above. The memory 602 may include removable or non-removable (or fixed) media, where appropriate. Memory 602 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 602 is a non-volatile solid state memory.
The memory may include Read Only Memory (ROM), random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical/tangible memory storage devices. Thus, in general, the memory comprises one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors) it is operable to perform the operations described with reference to the method according to the first aspect of the disclosure.
The processor 601 reads and executes the computer program instructions stored in the memory 602 to implement any one of the electric drive system heating methods of the above embodiments.
In one example, the vehicle may also include a communication interface 603 and a bus 610. As shown in fig. 4, the processor 601, the memory 602, and the communication interface 603 are connected to each other through a bus 610 and perform communication with each other.
The communication interface 603 is mainly configured to implement communication between each module, apparatus, unit and/or device in the embodiments of the present application.
Bus 610 includes hardware, software, or both, that couple components of the electric drive system heating apparatus to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 610 may include one or more buses, where appropriate. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.
In addition, the electric drive system heating method in combination with the above embodiment stores computer program instructions; the computer program instructions, when executed by a processor, implement any of the electric drive system heating methods of the above embodiments.
It should be clear that the present application is not limited to the particular arrangements and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps, after appreciating the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be different from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.

Claims (10)

1. A method of heating an electric drive system, the electric drive system including a motor controller and a motor, the method comprising:
acquiring the current vehicle state of a vehicle, wherein the vehicle state comprises a driving state or a parking state;
determining an output current of a d-axis and an output current of a q-axis of the motor according to the vehicle state when the vehicle is detected to be in a heating mode;
and outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value.
2. The method of claim 1, wherein determining the output current of the d-axis and the output current of the q-axis of the motor from the vehicle state in the event that the vehicle is detected to be in a heating mode comprises:
if the vehicle is in a driving state, acquiring a first current of a d-axis of the motor;
acquiring torque and rotation speed of the motor under the condition that the vehicle is detected to be in a heating mode;
obtaining a current calibration value of the d axis according to the torque and the rotating speed;
adjusting the first current by using the current calibration value to obtain d-axis output current;
and obtaining the output current of the q-axis according to the output current of the d-axis and the constant torque curve.
3. The method according to claim 2, wherein said obtaining a current calibration value of said d-axis from said torque and said rotational speed comprises:
and obtaining a target current calibration value corresponding to the torque and the rotating speed from the pre-obtained calibration relation, and taking the target current calibration value as the current calibration value of the d axis, wherein the calibration relation comprises a plurality of groups of corresponding relations obtained through calibration, and each group of corresponding relations comprises a first torque, a first rotating speed and a corresponding first calibration value.
4. The method of claim 2, wherein adjusting the first current using the current calibration value results in a d-axis output current, comprising:
and adding the first current and the current calibration value to obtain the d-axis output current.
5. The method of claim 1, wherein determining the output current of the d-axis and the output current of the q-axis of the motor from the vehicle state in the event that the vehicle is detected to be in a heating mode comprises:
acquiring the rotating speed of the motor under the condition that the vehicle is in a parking state;
and under the condition that the rotating speed is in a preset rotating speed range and the vehicle is detected to be in a heating mode, determining that the output current of the d axis is a first preset current and the output current of the q axis is a second preset current.
6. The method of claim 5, wherein determining that the d-axis output current is a first preset current and the q-axis output current is a second preset current comprises:
the output current of the d-axis is determined to be sinusoidal and the output current of the q-axis is determined to be 0.
7. An electric drive system heating apparatus, wherein the electric drive system includes a motor controller and a motor, the apparatus comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the current vehicle state of a vehicle, and the vehicle state comprises a driving state or a parking state;
a determining module configured to determine an output current of a d-axis and an output current of a q-axis of the motor according to the vehicle state in a case where the vehicle is detected to be in a heating mode;
and the output module is used for outputting the output current of the d axis and the output current of the q axis as output signals of the motor controller, so that the motor operates within a preset time period to generate a target heat value.
8. A computer storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any of claims 1-6.
9. A computer program product, characterized in that instructions in the computer program product are used for implementing the method according to any of claims 1-6.
10. A vehicle comprising the computer storage medium of claim 8, or the computer program product of claim 9.
CN202311780315.8A 2023-12-22 2023-12-22 Electric drive system heating method and device, vehicle and computer storage medium Pending CN117755096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311780315.8A CN117755096A (en) 2023-12-22 2023-12-22 Electric drive system heating method and device, vehicle and computer storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311780315.8A CN117755096A (en) 2023-12-22 2023-12-22 Electric drive system heating method and device, vehicle and computer storage medium

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CN117755096A true CN117755096A (en) 2024-03-26

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