CN113635777A

CN113635777A - Motor control method and device for vehicle, vehicle and storage medium

Info

Publication number: CN113635777A
Application number: CN202110805054.5A
Authority: CN
Inventors: 施璧珠; 熊鑫
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-11-12
Anticipated expiration: 2041-07-16
Also published as: CN113635777B

Abstract

The invention discloses a motor control method and device for a vehicle, the vehicle and a storage medium, wherein the method comprises the following steps: acquiring the current maximum allowable discharge power of a power battery and the current power consumed by accessories of the whole vehicle; acquiring a first allowable output power of a motor controller according to the current maximum allowable discharge power and the current power consumed by the finished automobile accessories; acquiring a working current threshold corresponding to the current working temperature of the motor controller; acquiring second allowable output power of the motor controller according to the working current threshold; and acquiring the driving torque of the motor according to the first allowable output power and the second allowable output power, and controlling the motor according to the driving torque. Therefore, the working current of the motor controller is used as an influence factor to be added into the motor driving torque calculation logic, over-temperature alarm caused by overlarge current of the motor controller can be effectively avoided, the alarm frequency of the whole vehicle is reduced, and the user experience is improved under the condition of ensuring the safety of the whole vehicle.

Description

Motor control method and device for vehicle, vehicle and storage medium

Technical Field

The present invention relates to the field of vehicle technologies, and in particular, to a method and an apparatus for controlling a motor of a vehicle, and a storage medium.

Background

In a new energy automobile, an over-temperature fault is a common fault in the working process of a motor, and the existing processing mode is to perform over-temperature alarm when the over-temperature fault occurs, but the alarm frequency of the whole automobile can be increased, so that the user experience is influenced.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a motor control method for a vehicle, in which a working current of a motor controller is added to a motor driving torque calculation logic as an influencing factor, so that an over-temperature alarm caused by an excessive current of the motor controller can be effectively avoided, the number of alarm times of the entire vehicle is reduced, and user experience is improved under the condition of ensuring the safety of the entire vehicle.

A second object of the present invention is to provide a motor control apparatus for a vehicle.

A third object of the invention is to propose a vehicle.

A fourth object of the invention is to propose a computer-readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides a motor control method for a vehicle, including: acquiring the current maximum allowable discharge power of a power battery and the current power consumed by accessories of the whole vehicle; acquiring a first allowable output power of a motor controller according to the current maximum allowable discharge power and the current power consumed by the finished automobile accessories; acquiring a working current threshold corresponding to the current working temperature of the motor controller; acquiring second allowable output power of the motor controller according to the working current threshold; and acquiring the driving torque of the motor according to the first allowable output power and the second allowable output power, and controlling the motor according to the driving torque.

According to the motor control method for the vehicle, the first allowable output power of the motor controller is obtained through the current maximum allowable discharge power of the power battery and the current power consumption of accessories of the whole vehicle, the second allowable output power of the motor controller is obtained through the working current threshold corresponding to the current working temperature of the motor controller, the driving torque of the motor is obtained according to the first allowable output power and the second allowable output power, and the motor is controlled according to the driving torque. Therefore, the working current of the motor controller is used as an influence factor to be added into the motor driving torque calculation logic, over-temperature alarm caused by overlarge current of the motor controller can be effectively avoided, the alarm frequency of the whole vehicle is reduced, and the user experience is improved under the condition of ensuring the safety of the whole vehicle.

According to an embodiment of the invention, acquiring the first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumed by the accessories of the whole vehicle comprises: acquiring a power difference value between the current maximum allowable discharge power and the current power consumed by the finished automobile accessories; and acquiring first allowable output power according to the power difference and preset line loss efficiency.

According to one embodiment of the invention, acquiring the working current threshold corresponding to the current working temperature of the motor controller comprises the following steps: acquiring the current working temperature of a motor controller; and acquiring a working current threshold corresponding to the current working temperature by adopting a table look-up mode according to the current working temperature.

According to an embodiment of the present invention, obtaining the second allowable output power of the motor controller according to the operating current threshold comprises: acquiring the working voltage of a motor controller; and acquiring second allowable output power according to the working voltage and the working current threshold.

According to an embodiment of the present invention, obtaining the driving torque of the motor based on the first allowable output power and the second allowable output power includes: acquiring the current rotating speed of the motor, and acquiring the smaller value of the first allowable output power and the second allowable output power; and acquiring the driving torque of the motor according to the current rotating speed and the smaller value.

According to an embodiment of the present invention, the obtaining of the driving torque of the motor according to the first allowable output power and the second allowable output power further includes: acquiring the maximum allowable input torque of a gearbox and the maximum allowable output torque of a motor; and acquiring the driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value.

According to an embodiment of the present invention, obtaining the driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotation speed and the smaller value includes: and acquiring the minimum value of the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value to obtain the driving torque of the motor.

In order to achieve the above object, an embodiment of a second aspect of the present invention provides a motor control apparatus for a vehicle, including: the acquisition module is used for acquiring the current maximum allowable discharge power of the power battery and the current power consumed by the whole vehicle accessories and acquiring a working current threshold corresponding to the current working temperature of the motor controller; the calculation module is used for acquiring a first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumption of the finished automobile accessory, acquiring a second allowable output power of the motor controller according to the working current threshold, and acquiring the driving torque of the motor according to the first allowable output power and the second allowable output power; and the control module is used for controlling the motor according to the driving torque.

According to the motor control device for the vehicle, the current maximum allowable discharge power of the power battery, the current finished vehicle accessory consumed power and the working current threshold corresponding to the current working temperature of the motor controller are obtained through the obtaining module, the first allowable output power of the motor controller is obtained through the calculating module according to the current maximum allowable discharge power and the current finished vehicle accessory consumed power, the second allowable output power of the motor controller is obtained according to the working current threshold, the driving torque of the motor is obtained according to the first allowable output power and the second allowable output power, and the motor is controlled through the control module according to the driving torque. Therefore, the working current of the motor controller is used as an influence factor to be added into the motor driving torque calculation logic, over-temperature alarm caused by overlarge current of the motor controller can be effectively avoided, the alarm frequency of the whole vehicle is reduced, and the user experience is improved under the condition of ensuring the safety of the whole vehicle.

In order to achieve the above object, an embodiment of a third aspect of the present invention provides a vehicle, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the motor control method for a vehicle of the embodiment of the first aspect when executing the computer program.

According to the vehicle provided by the embodiment of the invention, by the motor control method for the vehicle, the working current of the motor controller is taken as an influence factor to be added into the motor driving torque calculation logic, so that the over-temperature alarm caused by the overlarge current of the motor controller can be effectively avoided, the alarm frequency of the whole vehicle is further reduced, and the user experience is improved under the condition of ensuring the safety of the whole vehicle.

To achieve the above object, a fourth aspect embodiment of the present invention proposes a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the motor control method for a vehicle of the first aspect embodiment described above.

According to the computer-readable storage medium for the vehicle, by the motor control method for the vehicle, the working current of the motor controller is used as an influence factor to be added into the motor driving torque calculation logic, over-temperature alarming caused by overlarge current of the motor controller can be effectively avoided, the alarming frequency of the whole vehicle is further reduced, and the user experience is improved under the condition that the safety of the whole vehicle is ensured.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a flowchart of a motor control method for a vehicle according to one embodiment of the invention;

fig. 2 is a schematic structural diagram of a motor control apparatus for a vehicle according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A motor control method and device for a vehicle, and a storage medium according to embodiments of the present invention will be described with reference to the accompanying drawings

Fig. 1 is a flowchart of a motor control method for a vehicle according to one embodiment of the present invention. As shown in fig. 1, the motor control method for a vehicle may include the steps of:

and S101, acquiring the current maximum allowable discharge power of the power battery and the current power consumed by the whole vehicle accessories.

It should be noted that, the current maximum allowable discharge power of the power battery refers to the maximum discharge power that the power battery can currently provide; the current power consumption of the accessories of the whole vehicle is the sum of the power consumed by all the accessories which are currently in a working state and powered by the power battery, such as a heater (PTC), an air conditioner, an oil pump, an air pump, a DCDC converter and the like.

In specific implementation, a Vehicle Control Unit (VCU) may communicate with a power battery management system to obtain a current maximum allowable discharge power of a power battery, and obtain a current power consumption of each accessory by communicating with each accessory, and calculate a sum of power consumed by all accessories to obtain a current power consumption of each accessory.

And S102, acquiring a first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumption of the finished automobile accessories.

Specifically, the vehicle controller may calculate and obtain a first allowable output power of a Motor Controller (MCU) according to a current maximum allowable discharge power and a current power consumed by the vehicle accessory.

In some embodiments, obtaining the first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumed by the accessories of the whole vehicle includes: acquiring a power difference value between the current maximum allowable discharge power and the current power consumed by the finished automobile accessories; and acquiring first allowable output power according to the power difference and preset line loss efficiency.

Specifically, after the current maximum allowable discharge power of the power battery and the current power consumed by the vehicle accessories are obtained, the power difference between the current maximum allowable discharge power and the current power consumed by the vehicle accessories is obtained, and the power difference can be used as the maximum power of the current input end of the motor controller. However, considering that there is a certain line loss when the power battery delivers and distributes the electric energy to the motor, after obtaining the power difference, the power difference is also multiplied by the line loss efficiency to obtain the first allowable output power of the motor controller, that is, the maximum power at the input end of the current motor controller, so as to improve the accuracy of the subsequent calculation of the motor driving torque, where the line loss efficiency is the percentage of the power supply amount minus the line loss electric amount.

And step S103, acquiring a working current threshold corresponding to the current working temperature of the motor controller.

Specifically, too big operating current can cause the temperature of motor controller to rise, for the operating current that prevents the motor excessively leads to the motor to take place the overtemperature trouble, can set up the operating current threshold value that different operating temperatures correspond in advance in this application, the maximum allowable current promptly, and then according to the current operating temperature of motor controller, acquires corresponding operating current threshold value.

In some embodiments, obtaining an operating current threshold corresponding to a current operating temperature of the motor controller includes: acquiring the current working temperature of a motor controller; and acquiring a working current threshold corresponding to the current working temperature by adopting a table look-up mode according to the current working temperature.

Specifically, in the operation process of the motor controller, working current running in each element can generate certain working temperature, the working temperature of each operation stage of the motor controller can be constantly monitored through the temperature measuring device, different working temperatures can correspond to different working current thresholds, when the current working current is greater than the working current threshold, an overcurrent phenomenon can be caused, so that the motor controller alarms and even is damaged, and therefore, the working current at the current working temperature needs to be ensured to be less than the working current threshold in the operation process of the motor controller. It should be noted that, the working current thresholds corresponding to different working temperatures are recorded and arranged into a table in advance in a calibration manner, and in the using process, the vehicle controller can directly find out the working current threshold at the current working temperature by adopting a table look-up method, which is convenient and accurate.

And step S104, acquiring second allowable output power of the motor controller according to the working current threshold.

Specifically, after obtaining the working current threshold at the current working temperature of the motor controller, the vehicle control unit may obtain the maximum power allowed to be output by the motor controller, that is, the second allowed output power, according to the working current threshold.

In some embodiments, deriving a second allowable output power of the motor controller based on the operating current threshold comprises: acquiring the working voltage of a motor controller; and acquiring second allowable output power according to the working voltage and the working current threshold.

Specifically, the vehicle control unit may obtain a working voltage of the motor controller during operation through the voltage measuring device, and multiply the working voltage by a working current threshold at a current working temperature to obtain a second allowable output power of the motor controller.

And step S105, acquiring the driving torque of the motor according to the first allowable output power and the second allowable output power, and controlling the motor according to the driving torque.

Specifically, the vehicle control unit may obtain the driving torque of the motor under the current working condition according to the obtained first allowable output power or the obtained second allowable output power, and drive the operation of the motor according to the obtained driving torque of the motor.

In some embodiments, obtaining the driving torque of the motor according to the first allowable output power and the second allowable output power includes: acquiring the current rotating speed of the motor, and acquiring the smaller value of the first allowable output power and the second allowable output power; and acquiring the driving torque of the motor according to the current rotating speed and the smaller value.

Specifically, the vehicle control unit may detect a current rotation speed of the motor through the motor rotation speed measuring device, compare the obtained first allowable output power with the obtained second allowable output power, and take a smaller value of the first allowable output power and the second allowable output power as a final allowable output power, and then convert the rotation speed of the motor into an angular velocity of the motor rotation shaft, and divide the final allowable output power by the angular velocity of the motor rotation shaft to obtain a driving torque of the motor.

In some embodiments, obtaining the driving torque of the motor according to the first allowable output power and the second allowable output power further includes: acquiring the maximum allowable input torque of a gearbox and the maximum allowable output torque of a motor; and acquiring the driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value.

The maximum allowable input torque of the gearbox and the maximum allowable output torque of the motor are obtained while the first allowable output power and the second allowable output power are obtained, the gearbox is used as a power output mechanism of an automobile and can be used for changing the rotating speed and the torque, the maximum allowable input torque of the gearbox and the maximum allowable output torque of the motor are respectively the maximum power receiving amount and the maximum power output amount in the power transmission process, the smaller value of the first allowable output power and the second allowable output power can be used as the maximum power input amount, and the driving torque of the motor can be accurately obtained by comparing the size relationship of the first allowable output power and the second allowable output power.

In some embodiments, obtaining the driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotation speed and the smaller value comprises: and acquiring the minimum value of the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value to obtain the driving torque of the motor. That is, by comparing the maximum allowable input torque, the maximum allowable output torque, the current rotational speed, and the magnitude of the smaller value, the minimum value thereof is obtained as the drive torque of the motor.

Therefore, in the calculation process of the whole vehicle controller, the working current of the motor controller is used as an influencing factor to be added into the calculation logic of the motor driving torque, and the over-temperature faults of the parts of the motor controller can be reduced in a torque output mode. That is to say, this application can solve the excessive temperature warning problem that motor controller overflows and leads to through whole car controllability.

In summary, according to the motor control method for the vehicle in the embodiment of the present invention, the first allowable output power of the motor controller is obtained through the current maximum allowable discharge power of the power battery and the current power consumed by the accessories of the entire vehicle, the second allowable output power of the motor controller is obtained through the working current threshold corresponding to the current working temperature of the motor controller, the driving torque of the motor is obtained according to the first allowable output power and the second allowable output power, and the motor is controlled according to the driving torque. Therefore, the working current of the motor controller is used as an influence factor to be added into the motor driving torque calculation logic, over-temperature alarm caused by overlarge current of the motor controller can be effectively avoided, the alarm frequency of the whole vehicle is reduced, and the user experience is improved under the condition of ensuring the safety of the whole vehicle.

Fig. 2 is a schematic structural diagram of a motor control apparatus for a vehicle according to an embodiment of the present invention. As shown in fig. 2, the motor control apparatus 100 for a vehicle includes: an acquisition module 110, a calculation module 120, and a control module 130.

The obtaining module 110 is configured to obtain a current maximum allowed discharge power of the power battery and a current power consumption of the entire vehicle accessory, and obtain a working current threshold corresponding to a current working temperature of the motor controller; the calculation module 120 is configured to obtain a first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumption of the entire vehicle accessory, obtain a second allowable output power of the motor controller according to the working current threshold, and obtain a driving torque of the motor according to the first allowable output power and the second allowable output power; the control module 130 is configured to control the motor based on the drive torque.

In some embodiments, the calculation module 120 is specifically configured to: and acquiring a power difference value between the current maximum allowable discharge power and the current power consumption of the finished automobile accessory, and acquiring a first allowable output power according to the power difference value and the preset line loss efficiency.

In some embodiments, the obtaining module 110 is specifically configured to: and acquiring the current working temperature of the motor controller, and acquiring a working current threshold corresponding to the current working temperature in a table look-up mode according to the current working temperature.

In some embodiments, the calculation module 120 is specifically configured to: and acquiring the working voltage of the motor controller, and acquiring second allowable output power according to the working voltage and the working current threshold.

In some embodiments, the calculation module 120 is specifically configured to: the method comprises the steps of obtaining the current rotating speed of the motor, obtaining the smaller value of the first allowable output power and the second allowable output power, and obtaining the driving torque of the motor according to the current rotating speed and the smaller value.

In some embodiments, the obtaining module 110 is further configured to obtain a maximum allowable input torque of the transmission and a maximum allowable output torque of the motor; the calculation module 120 is further configured to obtain a driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotation speed, and the smaller value.

In some embodiments, the calculation module 120 is specifically configured to: and acquiring the minimum value of the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value to obtain the driving torque of the motor.

It should be noted that, for the description of the motor control device for a vehicle in the present application, please refer to the description of the motor control method for a vehicle in the present application, and detailed description thereof is omitted here.

Embodiments of the present invention also provide a vehicle, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the motor control method for the vehicle according to the foregoing embodiments when executing the computer program.

Embodiments of the present invention also provide a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, implements the steps of the motor control method for a vehicle as in the previous embodiments.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A motor control method for a vehicle, characterized by comprising the steps of:

acquiring the current maximum allowable discharge power of a power battery and the current power consumed by accessories of the whole vehicle;

acquiring a first allowable output power of a motor controller according to the current maximum allowable discharge power and the current power consumed by the finished automobile accessories;

acquiring a working current threshold corresponding to the current working temperature of the motor controller;

acquiring second allowable output power of the motor controller according to the working current threshold;

and acquiring the driving torque of the motor according to the first allowable output power and the second allowable output power, and controlling the motor according to the driving torque.

2. The motor control method for the vehicle according to claim 1, wherein obtaining a first allowable output power of a motor controller based on the current maximum allowable discharge power and the current vehicle accessory consumed power comprises:

acquiring a power difference value between the current maximum allowable discharge power and the current vehicle accessory consumed power;

and acquiring the first allowable output power according to the power difference and preset line loss efficiency.

3. The motor control method for the vehicle according to claim 1, wherein obtaining an operating current threshold corresponding to a present operating temperature of the motor controller includes:

acquiring the current working temperature of the motor controller;

and acquiring a working current threshold corresponding to the current working temperature by adopting a table look-up mode according to the current working temperature.

4. The motor control method for the vehicle according to claim 1, wherein obtaining the second allowable output power of the motor controller based on the operating current threshold includes:

acquiring the working voltage of the motor controller;

and acquiring the second allowable output power according to the working voltage and the working current threshold.

5. The motor control method for the vehicle according to any one of claims 1 to 4, characterized in that obtaining a drive torque of a motor in accordance with the first allowable output power and the second allowable output power includes:

acquiring the current rotating speed of the motor, and acquiring the smaller value of the first allowable output power and the second allowable output power;

and acquiring the driving torque of the motor according to the current rotating speed and the smaller value.

6. The motor control method for the vehicle according to claim 5, characterized in that a drive torque of a motor is obtained in accordance with the first allowable output power and the second allowable output power, further comprising:

acquiring the maximum allowable input torque of a gearbox and the maximum allowable output torque of the motor;

and acquiring the driving torque of the motor according to the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value.

7. The motor control method for the vehicle according to claim 6, wherein obtaining the drive torque of the motor based on the maximum allowable input torque, the maximum allowable output torque, the current rotation speed, and the smaller value includes:

and acquiring the minimum value of the maximum allowable input torque, the maximum allowable output torque, the current rotating speed and the smaller value to obtain the driving torque of the motor.

8. A motor control apparatus for a vehicle, characterized by comprising:

the acquisition module is used for acquiring the current maximum allowable discharge power of the power battery and the current power consumed by the whole vehicle accessories and acquiring a working current threshold corresponding to the current working temperature of the motor controller;

the calculation module is used for acquiring a first allowable output power of the motor controller according to the current maximum allowable discharge power and the current power consumption of the finished automobile accessory, acquiring a second allowable output power of the motor controller according to the working current threshold, and acquiring a driving torque of the motor according to the first allowable output power and the second allowable output power;

and the control module is used for controlling the motor according to the driving torque.

9. A vehicle comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the motor control method for a vehicle of any one of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the motor control method for a vehicle according to any one of claims 1 to 7.