CN113022296A - Cooling control method and device, medium and equipment of electric drive system - Google Patents

Cooling control method and device, medium and equipment of electric drive system Download PDF

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Publication number
CN113022296A
CN113022296A CN202110560153.1A CN202110560153A CN113022296A CN 113022296 A CN113022296 A CN 113022296A CN 202110560153 A CN202110560153 A CN 202110560153A CN 113022296 A CN113022296 A CN 113022296A
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China
Prior art keywords
driving power
period
current
historical data
cooling
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CN202110560153.1A
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Chinese (zh)
Inventor
张文辉
魏长河
秦志东
刘继红
王广萍
王超
王海龙
赵松
周恩飞
张秀宾
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Priority to CN202110560153.1A priority Critical patent/CN113022296A/en
Publication of CN113022296A publication Critical patent/CN113022296A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • 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
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present disclosure relates to a cooling control method and apparatus, medium, and device for an electric drive system. The method comprises the following steps: if the electric vehicle enters the energy-saving mode, determining the driving power requirement of the current time period; acquiring historical data of the driving power in the next period, wherein the historical data comprises the driving power of the electric vehicle in each period during the operation of the preset route; if the cooling system of the electric vehicle is running, determining a target value of an operation parameter of the cooling system in the current period according to the driving power requirement in the current period and the historical data of the driving power in the next period; and controlling the operation parameters of the cooling system to operate according to the target values in the current period so as to cool the electric drive system. Therefore, the cooling control is carried out by considering the running state of the electric drive system in the future period in advance, and the self-adaption adjustment is carried out under the condition of ensuring the normal running of the electric drive system, so that the adjustment result is more suitable for the actual requirement in the future, and the energy loss is reduced.

Description

Cooling control method and device, medium and equipment of electric drive system
Technical Field
The present disclosure relates to the field of automatic control of electric vehicles, and more particularly, to a cooling control method and apparatus, medium, and device for an electric drive system.
Background
In recent years, new energy automobiles have been developed, the market reservation has increased year by year, and the user acceptance has been continuously improved. The electric drive system is used as a core component of a new energy vehicle, directly influences the performance of the vehicle, and how to enable the electric drive system to stably work for a long time is an important subject.
The electric drive system can be provided with a cooling system, and the electric drive system is cooled according to the running state of the motor, so that the heat dissipation efficiency of the motor is accelerated, and the normal running of the motor is ensured. In the related art, cooling of the electric drive system is mainly performed in a water cooling manner, and active heat exchange is performed with the outside through a cooling liquid flowing inside the electric drive system and an external radiator. For example, the vehicle control unit controls the rotation speed of the cooling fan to adjust the cooling power by responding to the cooling request of the electric drive system, so as to ensure the normal operation of the electric drive system.
In the existing cooling control mode, the redundancy of the system design is usually large, which easily causes the waste of resources.
Disclosure of Invention
The purpose of the present disclosure is to provide a cooling control method and apparatus, medium, and device of an electric drive system capable of saving energy while ensuring normal operation of a motor.
In order to achieve the above object, the present disclosure provides a cooling control method of an electric drive system, the method including:
if the electric vehicle enters the energy-saving mode, determining the driving power requirement of the current time period;
acquiring historical data of driving power in the next period, wherein the historical data comprises the driving power of the electric vehicle in each period during the operation of the preset route;
if the cooling system of the electric vehicle is running, determining a target value of an operation parameter of the cooling system in the current period according to the driving power demand of the current period and the historical data of the driving power of the next period;
controlling the operating parameter of the cooling system to operate at the target value to cool the electric drive system during the current period.
Optionally, the operating parameter comprises a rotational speed of a cooling fan.
Optionally, the determining a target value of an operating parameter of the cooling system in the current period according to the driving power demand of the current period and the historical data of the driving power of the next period comprises:
if the driving power requirement of the current period is equal to the historical data of the driving power of the next period, determining the target value of the rotating speed of the cooling fan as the current rotating speed;
if the driving power requirement of the current time period is greater than the historical data of the driving power of the next time period, determining that the target value of the rotating speed of the cooling fan is a value less than the current rotating speed;
and if the driving power requirement of the current period is smaller than the historical data of the driving power of the next period, determining that the target value of the rotating speed of the cooling fan is a value larger than the current rotating speed.
Optionally, if the driving power demand of the current period is greater than the historical data of the driving power of the next period, determining that the target value of the rotation speed of the cooling fan is a value less than the current rotation speed includes:
if the driving power requirement of the current time interval is greater than the historical data of the driving power of the next time interval, determining the target rotating speed of the cooling fan according to the following formula:
R2=a*R1
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, a is a coefficient, and a is more than 0 and less than 1.
Optionally, a decreases as the difference between the drive power demand of the current period and the historical data of the drive power of the next period increases.
Optionally, if the driving power demand of the current period is smaller than the historical data of the driving power of the next period, determining that the target value of the rotation speed of the cooling fan is a value larger than the current rotation speed includes:
if the driving power requirement of the current period is less than the historical data of the driving power of the next period, determining the target rotating speed of the cooling fan according to the following formula:
R2=b*R1
wherein R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, b is a coefficient, and b is greater than 1.
Alternatively, b increases as the difference between the historical data of the driving power for the next period and the driving power demand for the current period increases.
The present disclosure also provides a cooling control apparatus of an electric drive system, the apparatus including:
the system comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the driving power requirement of the current time period if the electric vehicle enters an energy-saving mode;
the acquisition module is used for acquiring historical data of the driving power in the next period, and the historical data comprises the driving power of the electric vehicle in each period during the operation of a preset route;
a second determination module, configured to determine, if a cooling system of the electric vehicle is operating, a target value of an operating parameter of the cooling system in the current period according to the driving power demand in the current period and historical data of the driving power in the next period;
and the control module is used for controlling the operation parameters of the cooling system to operate according to the target values in the current time period so as to cool the electric drive system.
The present disclosure also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method provided by the present disclosure.
The present disclosure also provides an electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.
Through the technical scheme, if the electric vehicle runs on a relatively fixed route, the driving power of the next time period can be pre-judged according to historical data, and the driving power of the next time period is used as a reference factor to determine the target value of the operation parameter of the cooling system in the current time period. Therefore, the cooling control is carried out by considering the running state of the electric drive system in the future period in advance, and the self-adaptive adjustment is carried out under the condition of ensuring the normal running of the electric drive system, so that the adjustment result is more suitable for the actual requirements in the future, the predictive control on the cooling of the electric drive system is realized, the cooling control strategy of the electric drive system is optimized, the design redundancy is effectively reduced, and the energy loss is reduced.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a flow chart of a cooling control method of an electric drive system provided in an exemplary embodiment;
FIG. 2 is a block diagram of a cooling control device of an electric drive system provided in an exemplary embodiment;
FIG. 3 is a block diagram of an electronic device, shown in an exemplary embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In some cases, electric vehicles may travel on relatively fixed routes, such as, for example, within an industrial park, on rails, in public transportation routes, in fixed area passenger/freight transportation routes, and the like. If the road condition is relatively fixed and the vehicle is operated by the same driver, the running time of the vehicle on the relatively fixed route gradually tends to a stable value along with the accumulation of the running times due to personal habits, and the driving power of each time period during the running tends to a stable value respectively.
The inventors have conceived that in such a case, it is possible to perform cooling control of the electric drive system using large data of drive power for each time period when the vehicle is traveling on the relatively fixed route, so that the consumption of energy is reduced as much as possible in the case where the electric drive system is safe.
FIG. 1 is a flow chart of a cooling control method of an electric drive system provided by an exemplary embodiment. As shown in fig. 1, the method may include the following steps.
In step S11, if the electric vehicle enters the energy saving mode, the driving power demand for the current period is determined.
In step S12, history data of the driving power for the next period is acquired, the history data including the driving power of the electric vehicle for each period during the predetermined route operation.
In step S13, if the cooling system of the electric vehicle is operating, a target value of an operating parameter of the cooling system in the current period is determined according to the driving power demand in the current period and the historical data of the driving power in the next period.
And step S14, controlling the operation parameters of the cooling system to operate according to the target values in the current time period so as to cool the electric drive system.
In which the road condition needs to be relatively stable in the predetermined route. When the electric vehicle is started, a prompt message can be output in the display screen to prompt the driver to select the energy-saving mode. If the current driving route is a preset route, the driver can select to operate in the energy-saving mode. In the energy saving mode, the electric vehicle may perform the above-described method in the present scheme.
Multiple routes may also be included in the same vehicle energy saving mode. For example, if an electric vehicle runs in two routes more than once, the driver may be prompted to select one of the routes in the prompt message output from the display screen, and the historical data of the two routes are not affected by each other.
When the vehicle runs in the preset route, the actual driving power of each time period during the running needs to be recorded, stored and fused (for example, averaged) with the corresponding data recorded before, so as to obtain the historical data of the driving power of each time period.
Wherein the length of time running in the predetermined route may be divided into a plurality of periods, for example, one period per minute. The average value of the actual drive power in each period may be taken as the history data of the drive power in each period. As the number of times of travel increases, the history data of the drive power of each period gradually becomes stable as the data source increases. The driving power at the current driving time may be fused with the previous history data to be used as new history data for the history data applied at the next driving.
The driving power requirement of the current time period can be determined by the vehicle control unit through analysis after the opening degree of the oiling pedal at the initial stage of the current time period is acquired.
The operating parameters of the cooling system may include various parameters, such as coolant flow, and cooling fan speed. Adjusting the operating parameter of the cooling system adjusts the operating power (cooling power) of the cooling system.
According to the magnitude relation between the driving power requirement of the current period and the historical data of the driving power of the next period, the future change trend of the driving power can be preliminarily predicted, so that the adaptive refrigerating power can be adopted to adapt to the change trend as soon as possible, and the effect of saving energy is achieved.
Through the technical scheme, if the electric vehicle runs on a relatively fixed route, the driving power of the next time period can be pre-judged according to historical data, and the driving power of the next time period is used as a reference factor to determine the target value of the operation parameter of the cooling system in the current time period. Therefore, the cooling control is carried out by considering the running state of the electric drive system in the future period in advance, and the self-adaptive adjustment is carried out under the condition of ensuring the normal running of the electric drive system, so that the adjustment result is more suitable for the actual requirements in the future, the predictive control on the cooling of the electric drive system is realized, the cooling control strategy of the electric drive system is optimized, the design redundancy is effectively reduced, and the energy loss is reduced.
In one embodiment, the operating parameter includes a rotational speed of the cooling fan. On the basis of fig. 1, determining the target value of the operating parameter of the cooling system in the current period (step S13) according to the driving power demand in the current period and the historical data of the driving power in the next period may include:
if the driving power requirement of the current period is equal to the historical data of the driving power of the next period, determining the target value of the rotating speed of the cooling fan as the current rotating speed;
if the driving power requirement of the current time period is greater than the historical data of the driving power of the next time period, determining that the target value of the rotating speed of the cooling fan is a value less than the current rotating speed;
and if the driving power requirement of the current period is less than the historical data of the driving power of the next period, determining that the target value of the rotating speed of the cooling fan is a value greater than the current rotating speed.
If the driving power requirement of the current period is equal to the historical data of the driving power of the next period, the driving power can be considered to be temporarily kept unchanged (at least in the next period), in the next period, the required heat dissipation power is equivalent to that in the current period, and the rotating speed of the heat dissipation fan can be temporarily kept unchanged.
If the driving power requirement in the current period is greater than the historical data of the driving power in the next period, it can be considered that the driving power will be reduced in the next period, so that the cooling power required in the next period will be reduced, and under the condition that the safety of the driving system is not affected, the cooling power is reduced in advance (for example, the rotating speed of a cooling fan is reduced in advance), so that the design redundancy can be effectively reduced, and the energy loss is reduced.
If the driving power requirement in the current period is smaller than the historical data of the driving power in the next period, it can be considered that the driving power will be increased in the next period, so the cooling power required in the next period will be increased, and at this time, the cooling power is increased in advance (for example, the rotating speed of the cooling fan is increased in advance), so that the situation that the cooling effect in the next period is poor can be avoided, and the thermal safety of the driving system is effectively guaranteed.
In another embodiment, if the driving power demand of the current period is greater than the historical data of the driving power of the next period, the step of determining that the target value of the rotation speed of the cooling fan is a value less than the current rotation speed may include: if the driving power requirement of the current period is greater than the historical data of the driving power of the next period, determining the target rotating speed of the cooling fan according to the following formula:
R2=a*R1（1）
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, a is a coefficient, and a is more than 0 and less than 1.
According to the formula (1), the target rotation speed of the cooling fan is less than the current rotation speed, that is, the rotation speed of the cooling fan is controlled to be reduced. And, such a simple proportional relationship is satisfied between the target rotation speed of the cooling fan and the current rotation speed. The coefficient a may be determined in advance by experiment or experience. If the method is adopted to determine the target rotating speed of the cooling fan, the self-adaptive cooling control can be realized by only pre-calibrating the coefficient and applying a simple proportional relation during operation, so that the effect of saving energy is achieved, the method is simple, and the processing speed is high.
In yet another embodiment, the coefficient a may be not fixed and may be decreased as the difference between the driving power demand of the current period and the historical data of the driving power of the next period increases.
Under the condition that the driving power requirement of the current time interval is greater than the historical data of the driving power of the next time interval, the larger the difference value between the driving power requirement of the current time interval and the historical data of the driving power of the next time interval is, the more the driving power is reduced in the next time interval, the more the cooling power requirement is reduced at the moment, the smaller the target rotating speed of the cooling fan can be controlled, and the smaller the target rotating speed of the cooling fan in the next time interval is calculated through the smaller coefficient a.
Specifically, the coefficient a may be a fixed number of values, each value corresponding to an interval of a difference between the driving power demand of the current period and the historical data of the driving power of the next period. Or, the coefficient a and the difference have a determined functional relationship, after the difference is obtained, the coefficient a is calculated according to the functional relationship in real time, and then the target rotating speed of the cooling fan is determined by using the formula (1).
In this embodiment, the target rotation speed of the cooling fan can be adaptively determined according to the variation of the driving power (the difference between the driving power demand in the current period and the historical data of the driving power in the next period), so that design redundancy can be reduced finely, and energy loss can be reduced.
In another embodiment, if the driving power demand of the current period is less than the historical data of the driving power of the next period, the step of determining that the target value of the rotation speed of the cooling fan is a value greater than the current rotation speed may include: if the driving power requirement of the current period is less than the historical data of the driving power of the next period, determining the target rotating speed of the cooling fan according to the following formula:
R2=b*R1（2）
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, b is a coefficient, and b is more than 1.
According to the formula (2), the target rotation speed of the cooling fan is greater than the current rotation speed, that is, the rotation speed of the cooling fan is controlled to increase. And, such a simple proportional relationship is satisfied between the target rotation speed of the cooling fan and the current rotation speed. The coefficient b may be determined in advance experimentally or empirically. If the method is adopted to determine the target rotating speed of the cooling fan, the coefficient is only needed to be calibrated in advance, the self-adaptive cooling control can be realized by applying a simple proportional relation during operation, the energy is saved under the condition of ensuring the thermal safety of a driving system, and the method is simple and has high processing speed.
In still another embodiment, the coefficient b may be not fixed, and may increase as the difference between the historical data of the driving power for the next period and the driving power demand for the current period increases.
Under the condition that the driving power requirement of the current time interval is smaller than the historical data of the driving power of the next time interval, the larger the difference value between the historical data of the driving power of the next time interval and the driving power requirement of the current time interval is, the larger the driving power is increased in the next time interval, the larger the cooling power requirement is increased at the moment, the larger the target rotating speed of the cooling fan can be controlled, and at the moment, the larger the target rotating speed of the cooling fan in the next time interval is obtained through calculation of a larger coefficient b.
Specifically, the coefficient b may be a fixed number of values, each value corresponding to an interval of a difference between the historical data of the driving power in the next period and the driving power requirement in the current period. Or, the coefficient b and the difference have a determined functional relationship, after the difference is obtained, the coefficient b is calculated according to the functional relationship in real time, and then the target rotating speed of the cooling fan is determined by using the formula (2).
In this embodiment, the target rotation speed of the cooling fan can be adaptively determined according to the magnitude of the variation of the driving power (the difference between the historical data of the driving power in the next period and the driving power requirement in the current period), so that design redundancy can be finely reduced, and energy loss can be reduced.
FIG. 2 is a block diagram of a cooling control device of an electric drive system provided in an exemplary embodiment. As shown in FIG. 2, a cooling control apparatus 200 of an electric drive system may include a first determination module 201, an acquisition module 202, a second determination module 203, and a control module 204.
The first determination module 201 is used for determining the driving power demand of the current time period if the electric vehicle enters the energy-saving mode.
The obtaining module 202 is configured to obtain historical data of the driving power in the next period, where the historical data includes the driving power of the electric vehicle in each period during the operation of the predetermined route.
The second determination module 203 is configured to determine a target value of an operation parameter of the cooling system in a current period according to a driving power demand of the current period and historical data of driving power in a next period if the cooling system of the electric vehicle is operating.
The control module 204 is configured to control the operating parameter of the cooling system to operate at a target value to cool the electric drive system during the current time period.
Optionally, the operating parameter comprises a rotational speed of the cooling fan.
Optionally, the second determination module 203 comprises a first determination submodule, a second determination submodule and a third determination submodule.
The first determining submodule is used for determining the target value of the rotating speed of the cooling fan as the current rotating speed if the driving power requirement of the current time interval is equal to the historical data of the driving power of the next time interval.
The second determining submodule is used for determining that the target value of the rotating speed of the cooling fan is a value smaller than the current rotating speed if the driving power requirement of the current time interval is larger than the historical data of the driving power of the next time interval.
The third determining submodule is used for determining that the target value of the rotating speed of the cooling fan is a value larger than the current rotating speed if the driving power requirement of the current time period is smaller than the historical data of the driving power of the next time period.
Optionally, the second determining submodule is configured to determine the target rotation speed of the cooling fan according to the following formula if the driving power demand of the current period is greater than the historical data of the driving power of the next period:
R2=a*R1
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, a is a coefficient, and a is more than 0 and less than 1.
Alternatively, a decreases as the difference between the driving power demand of the current period and the historical data of the driving power of the next period increases.
Optionally, the third determining submodule is configured to determine the target rotation speed of the cooling fan according to the following formula if the driving power demand of the current period is smaller than the historical data of the driving power of the next period:
R2=b*R1
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, b is a coefficient, and b is more than 1.
Alternatively, b increases as the difference between the historical data of the driving power for the next period and the driving power demand for the current period increases.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Through the technical scheme, if the electric vehicle runs on a relatively fixed route, the driving power of the next time period can be pre-judged according to historical data, and the driving power of the next time period is used as a reference factor to determine the target value of the operation parameter of the cooling system in the current time period. Therefore, the cooling control is carried out by considering the running state of the electric drive system in the future period in advance, and the self-adaptive adjustment is carried out under the condition of ensuring the normal running of the electric drive system, so that the adjustment result is more suitable for the actual requirements in the future, the predictive control on the cooling of the electric drive system is realized, the cooling control strategy of the electric drive system is optimized, the design redundancy is effectively reduced, and the energy loss is reduced.
The present disclosure also provides an electronic device comprising a memory and a processor, the memory having stored thereon a computer program. The processor is used to execute the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.
Fig. 3 is a block diagram of an electronic device 300, shown in an exemplary embodiment. As shown in fig. 3, the electronic device 300 may include: a processor 301 and a memory 302. The electronic device 300 may also include one or more of a multimedia component 303, an input/output (I/O) interface 304, and a communication component 305.
The processor 301 is configured to control the overall operation of the electronic device 300, so as to complete all or part of the steps in the cooling control method of the electric drive system. The memory 302 is used to store various types of data to support operation at the electronic device 300, such as instructions for any application or method operating on the electronic device 300 and application-related data, such as contact data, transmitted and received messages, pictures, audio, video, and the like. The Memory 302 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 303 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 302 or transmitted through the communication component 305. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 304 provides an interface between the processor 301 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 305 is used for wired or wireless communication between the electronic device 300 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 305 may therefore include: Wi-Fi module, Bluetooth module, NFC module, etc.
In an exemplary embodiment, the electronic Device 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the cooling control method of the electric drive system described above.
In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the cooling control method of an electric drive system described above is also provided. For example, the computer readable storage medium may be the memory 302 described above including program instructions executable by the processor 301 of the electronic device 300 to perform the cooling control method of the electric drive system described above.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A cooling control method of an electric drive system, characterized in that the method comprises:
if the electric vehicle enters the energy-saving mode, determining the driving power requirement of the current time period;
acquiring historical data of driving power in the next period, wherein the historical data comprises the driving power of the electric vehicle in each period during the operation of the preset route;
if the cooling system of the electric vehicle is running, determining a target value of an operation parameter of the cooling system in the current period according to the driving power demand of the current period and the historical data of the driving power of the next period;
controlling the operating parameter of the cooling system to operate at the target value to cool the electric drive system during the current period.
2. The method of claim 1, wherein the operating parameter comprises a rotational speed of a heat dissipation fan.
3. The method of claim 2, wherein determining the target value for the operating parameter of the cooling system during the current time period based on the drive power demand for the current time period and historical data for the drive power for the next time period comprises:
if the driving power requirement of the current period is equal to the historical data of the driving power of the next period, determining the target value of the rotating speed of the cooling fan as the current rotating speed;
if the driving power requirement of the current time period is greater than the historical data of the driving power of the next time period, determining that the target value of the rotating speed of the cooling fan is a value less than the current rotating speed;
and if the driving power requirement of the current period is smaller than the historical data of the driving power of the next period, determining that the target value of the rotating speed of the cooling fan is a value larger than the current rotating speed.
4. The method according to claim 3, wherein the determining that the target value of the rotation speed of the heat dissipation fan is a value smaller than the current rotation speed if the driving power demand of the current period is larger than the historical data of the driving power of the next period comprises:
if the driving power requirement of the current time interval is greater than the historical data of the driving power of the next time interval, determining the target rotating speed of the cooling fan according to the following formula:
R2=a*R1
wherein, R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, a is a coefficient, and a is more than 0 and less than 1.
5. The method of claim 4, wherein a decreases as the difference between the drive power demand for the current period and the historical data of drive power for the next period increases.
6. The method according to claim 3, wherein the determining that the target value of the rotation speed of the heat dissipation fan is a value greater than the current rotation speed if the driving power demand of the current period is less than the historical data of the driving power of the next period comprises:
if the driving power requirement of the current period is less than the historical data of the driving power of the next period, determining the target rotating speed of the cooling fan according to the following formula:
R2=b*R1
wherein R2 is the target rotation speed of the cooling fan, R1 is the current rotation speed of the cooling fan, b is a coefficient, and b is greater than 1.
7. The method of claim 6, wherein b increases as the difference between the historical data of drive power for the next time period and the drive power demand for the current time period increases.
8. A cooling control apparatus of an electric drive system, characterized in that the apparatus comprises:
the system comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the driving power requirement of the current time period if the electric vehicle enters an energy-saving mode;
the acquisition module is used for acquiring historical data of the driving power in the next period, and the historical data comprises the driving power of the electric vehicle in each period during the operation of a preset route;
a second determination module, configured to determine, if a cooling system of the electric vehicle is operating, a target value of an operating parameter of the cooling system in the current period according to the driving power demand in the current period and historical data of the driving power in the next period;
and the control module is used for controlling the operation parameters of the cooling system to operate according to the target values in the current time period so as to cool the electric drive system.
9. 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 method according to any one of claims 1 to 7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 7.
CN202110560153.1A 2021-05-21 2021-05-21 Cooling control method and device, medium and equipment of electric drive system Pending CN113022296A (en)

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CN202110560153.1A CN113022296A (en) 2021-05-21 2021-05-21 Cooling control method and device, medium and equipment of electric drive system

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CN202110560153.1A CN113022296A (en) 2021-05-21 2021-05-21 Cooling control method and device, medium and equipment of electric drive system

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103978890A (en) * 2013-02-07 2014-08-13 曼卡车和巴士股份公司 Method and arrangement for optimising the motor availability of electric components cooled by a cooling circuit
US9290108B2 (en) * 2014-03-31 2016-03-22 Toyota Motor Engineering & Manufacturing North America, Inc. System and method for adaptive battery temperature control of a vehicle over a known route
CN106915277A (en) * 2016-08-19 2017-07-04 蔚来汽车有限公司 Power assembly of electric automobile control system
CN108515852A (en) * 2017-02-22 2018-09-11 丰田自动车株式会社 Fuel-cell vehicle and its control method
CN112780397A (en) * 2019-11-07 2021-05-11 郑州宇通客车股份有限公司 Vehicle and control method of cooling fan thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103978890A (en) * 2013-02-07 2014-08-13 曼卡车和巴士股份公司 Method and arrangement for optimising the motor availability of electric components cooled by a cooling circuit
US9290108B2 (en) * 2014-03-31 2016-03-22 Toyota Motor Engineering & Manufacturing North America, Inc. System and method for adaptive battery temperature control of a vehicle over a known route
CN106915277A (en) * 2016-08-19 2017-07-04 蔚来汽车有限公司 Power assembly of electric automobile control system
CN108515852A (en) * 2017-02-22 2018-09-11 丰田自动车株式会社 Fuel-cell vehicle and its control method
CN112780397A (en) * 2019-11-07 2021-05-11 郑州宇通客车股份有限公司 Vehicle and control method of cooling fan thereof

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Application publication date: 20210625