CN114043841A - Automobile thermal management method and device and computer readable storage medium - Google Patents
Automobile thermal management method and device and computer readable storage medium Download PDFInfo
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- CN114043841A CN114043841A CN202111344401.5A CN202111344401A CN114043841A CN 114043841 A CN114043841 A CN 114043841A CN 202111344401 A CN202111344401 A CN 202111344401A CN 114043841 A CN114043841 A CN 114043841A
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- 238000007726 management method Methods 0.000 title claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 117
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 239000002699 waste material Substances 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000013021 overheating Methods 0.000 abstract description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
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- Thermal Sciences (AREA)
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Abstract
The invention provides a vehicle thermal management method, equipment and a computer readable storage medium, wherein the vehicle thermal management method comprises the steps of collecting temperature information of a driving system; calculating a difference value between the temperature information and a preset temperature; acquiring corresponding parameter information according to the difference value; adjusting the cooling efficiency of the cooling system according to the parameter information. According to the technical scheme, after the temperature information of the driving system is collected, the temperature information is compared with the preset temperature, and after the difference value between the temperature information and the preset temperature is obtained, the cooling efficiency of the cooling system is further determined through a PID algorithm, so that the accurate control of the cooling system is improved, the overheating damage of parts and components caused by the fact that the cooling system cannot dissipate heat in time is avoided, and meanwhile, the waste of energy consumption caused by excessive cooling is avoided.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile thermal management method, automobile thermal equipment and a computer readable storage medium.
Background
With the development of electric automobiles, the driving range and the motor power of the electric automobiles are increased, and meanwhile, the requirements of users on various aspects of acceleration, charging power, heat dissipation and the like of the automobiles are more strict. With the performance enhancement of electric vehicles, the requirements for heat dissipation in the vehicle are becoming more severe. Therefore, in the prior art, the purpose of in-vehicle thermal management is usually achieved by adopting a water cooling mode, but at present, the water cooling control is based on a table look-up method to control the duty ratio of the water pump to control the water flow, and the accurate control of the water flow cannot be achieved, so that the heat dissipation effect is reduced.
Disclosure of Invention
The invention mainly aims to provide a method and equipment for automobile thermal management and a computer readable storage medium, and aims to solve the technical problem that the heat dissipation effect is reduced because the accurate control of the water flow cannot be realized in the prior art.
In order to achieve the above object, the present invention provides a vehicle thermal management method, including a driving system and a cooling system for cooling the driving system, the vehicle thermal management method including:
collecting temperature information of the driving system;
calculating a difference value between the temperature information and a preset temperature;
acquiring corresponding parameter information according to the difference value;
adjusting the cooling efficiency of the cooling system according to the parameter information.
Optionally, the drive system comprises a battery assembly, a charging system, a motor, and a motor controller; the step of collecting temperature information of the drive system includes:
respectively acquiring a first temperature of the battery assembly, a second temperature of the charging system, a third temperature of the motor and a fourth temperature of the motor controller;
comparing the first temperature, the second temperature, the third temperature and the fourth temperature, and obtaining a maximum value of the first temperature, the second temperature, the third temperature and the fourth temperature;
and taking the maximum value as the temperature information.
Optionally, the step of using the maximum value as the temperature information further includes:
judging whether the maximum value is greater than or equal to the opening temperature;
when the maximum value is greater than or equal to the opening temperature, the maximum value is taken as the temperature information.
Optionally, the cooling system includes a heat radiator, a heat radiation pipe and a water pump, the heat radiator is disposed on the driving system, the heat radiation pipe is connected with the heat radiator, and the water pump is disposed on the heat radiation pipe; the step of adjusting the cooling efficiency of the cooling system according to the parameter information comprises:
acquiring a first duty ratio according to the parameter information;
adjusting the water flow rate of the water pump to correspond to the first duty ratio.
Optionally, after the step of obtaining the first duty ratio according to the parameter information, the method further includes:
acquiring water temperature information in the radiating pipe;
acquiring a second duty ratio corresponding to the water temperature information;
judging whether the first duty ratio is smaller than the second duty ratio;
and when the first duty ratio is smaller than the second duty ratio, replacing the second duty ratio with the first duty ratio.
Optionally, the cooling system further includes a heat dissipation fan, and after the step of calculating the difference between the temperature information and the preset temperature, the cooling system further includes:
judging whether the difference value is larger than or equal to a preset difference value or not;
and when the difference is greater than or equal to the preset difference, controlling the fan to be started.
Optionally, before the step of acquiring the temperature information of the driving system, the method further includes:
controlling the cooling system to operate at preset parameters for a preset time period.
Optionally, after the step of adjusting the cooling efficiency of the cooling system according to the parameter information, the method further includes:
acquiring the operating voltage of the cooling system;
determining the operation state of the cooling system according to the operation voltage and the parameter information;
and controlling the cooling system to suspend operation or keep operation according to the operation state.
In addition, in order to solve the above problems, the present invention further provides an automobile thermal management device, where the automobile thermal management device includes a driving system, a cooling system, a temperature sensor, a PID controller, and an automobile thermal management program capable of running on the PID controller, the cooling system is connected to the driving system, and the cooling system is used to dissipate heat of the driving system; the temperature sensor is used for acquiring temperature information of the driving system; when being executed by the PID controller, the automobile thermal management program realizes the steps of the automobile thermal management method.
In addition, in order to solve the above problem, the present invention further provides a computer-readable storage medium, where a vehicle thermal management program is stored, and when the vehicle thermal management program is executed by a processor, the steps of the vehicle thermal management method are implemented.
According to the technical scheme, after the temperature information of the driving system is collected, the temperature information is compared with the preset temperature, and after the difference value between the temperature information and the preset temperature is obtained, the cooling efficiency of the cooling system is further determined through a PID algorithm, so that the accurate control of the cooling system is improved, the overheating damage of parts and components caused by the fact that the cooling system cannot dissipate heat in time is avoided, and meanwhile, the waste of energy consumption caused by excessive cooling is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a first embodiment of a vehicle management method according to the present invention;
FIG. 2 is a schematic flow chart illustrating a second embodiment of a vehicle management method according to the present invention;
FIG. 3 is a schematic flow chart illustrating a third embodiment of a vehicle management method according to the present invention;
FIG. 4 is a schematic flow chart illustrating a fourth embodiment of a vehicle management method according to the present invention;
fig. 5 is a flowchart illustrating a fifth embodiment of a method for managing a vehicle according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a vehicle thermal management method, and please refer to fig. 1, fig. 1 is a flowchart illustrating a first embodiment of the vehicle thermal management method, and the vehicle thermal management method specifically includes the following steps:
step S10: collecting temperature information of the driving system;
step S20: calculating a difference value between the temperature information and a preset temperature;
step S30: acquiring corresponding parameter information according to the difference value;
step S40: adjusting the cooling efficiency of the cooling system according to the parameter information.
The invention is based on an automobile equipped with a thermal management device, and particularly comprises a driving system and a cooling system for cooling the driving system, wherein temperature sensors are distributed on the driving system to detect the temperature information of the driving system.
It should be noted that, in the present embodiment, the PID controller is configured to execute the vehicle thermal management program to implement the steps of the vehicle thermal management method as described above. Firstly, the temperature sensor is electrically connected with a PID controller, and the temperature information is transmitted to the PID controller through the temperature sensor for processing. Before the temperature information is processed, the preset temperature may be set, a difference between the temperature information and the preset temperature is calculated by a PID controller, and specifically, the temperature value in the temperature information is subtracted from the temperature value in the preset temperature, so as to obtain the difference.
After the difference value is obtained, the PID controller outputs a signal corresponding to the difference value to the cooling system through a PID algorithm according to the difference value, the cooling system takes the received signal as the parameter information, and the cooling system adjusts according to the parameter information to change the cooling efficiency, so that the calculation precision is improved, the cooling system can meet the cooling requirement, and resource waste is avoided.
According to the technical scheme, after the temperature information of the driving system is collected, the temperature information is compared with the preset temperature, and after the difference value between the temperature information and the preset temperature is obtained, the cooling efficiency of the cooling system is further determined through a PID algorithm, so that the accurate control of the cooling system is improved, the overheating damage of parts and components caused by the fact that the cooling system cannot dissipate heat in time is avoided, and meanwhile, the waste of energy consumption caused by excessive cooling is avoided.
Specifically, in this embodiment, the driving system is specifically composed of components such as a battery pack, a charging system, a motor controller, and the like, and therefore, in order to further improve the detection accuracy of the thermal management method of the vehicle, in this embodiment, the sub-temperature sensors are separately arranged on the different components, and the temperatures of the different components are respectively detected. Referring to fig. 2, fig. 2 is a flowchart illustrating a second embodiment of the thermal management method for a vehicle according to the present invention, wherein step S10 includes:
step S11: respectively acquiring a first temperature of the battery assembly, a second temperature of the charging system, a third temperature of the motor and a fourth temperature of the motor controller;
step S12: comparing the first temperature, the second temperature, the third temperature and the fourth temperature, and obtaining a maximum value among the first temperature, the second temperature, the third temperature and the fourth temperature.
In this embodiment, since the driving system has a plurality of components, and different components may have different temperatures under different conditions, accuracy of detection is improved, and it is ensured that the cooling system can stably cool the driving system, and the component with the highest temperature in the driving system should be used as a reference. Therefore, after the first temperature, the second temperature, the third temperature and the fourth temperature of different parts are respectively collected, the temperature information is selected as the temperature value with the highest temperature value by comparing the first temperature, the second temperature, the third temperature and the fourth temperature, so that the problem that the cooling efficiency of the cooling system is insufficient to cause the overhigh temperature of the parts is avoided. It should be noted that, this embodiment includes but is not limited to the above-mentioned scheme, and when the driving system further includes more other components, the number of the sub-sensors may also be increased, and the collection is realized through the CAN network, so as to collect the temperatures of all the components.
Step S13: judging whether the maximum value is greater than or equal to a pre-starting temperature;
step S14: when the maximum value is greater than or equal to the opening temperature, the maximum value is taken as the temperature information.
In addition, in order to further improve the detection accuracy of the thermal management method, after the maximum value is obtained, the maximum value is compared with the opening temperature, when the maximum value is greater than the opening temperature, it indicates that temperature reduction processing needs to be performed through the cooling system, and then the maximum value is used as the temperature information to perform subsequent steps; and when the maximum value is smaller than the opening temperature, the cooling system does not need to be opened for cooling treatment, and the subsequent calculation step is not executed, so that the program is prevented from occupying resources, and the temperature of the driving system is collected again.
Further, the cooling system comprises a radiator, a radiating pipe and a water pump, the radiator is arranged on the driving system, the radiating pipe is connected with the radiator, and the water pump is arranged on the radiating pipe; referring to fig. 3, fig. 3 is a flowchart illustrating a thermal management method for a vehicle according to a third embodiment of the present invention, where step S40 specifically includes:
step S41: acquiring a first duty ratio according to the parameter information;
step S42: adjusting the water flow rate of the water pump to correspond to the first duty ratio.
By adjusting the duty ratio of the water pump in the embodiment, the duty ratio of the water pump can be adjusted between 0% and 100%. The flow rate of the water pump is adjusted by adjusting the duty ratio, so that the cooling efficiency of the cooling system is adjusted. In this embodiment, after the first duty ratio of the water pump is calculated according to the difference value through the PID algorithm, the PID controller controls the water pump to be turned on at the first duty ratio, so as to improve the accurate control of the flow rate of the water pump.
Meanwhile, in this embodiment, a sub-sensor may be further disposed on the heat dissipation pipe to detect information of the water temperature in the heat dissipation pipe, and after step S41, this embodiment further includes:
step S43: acquiring water temperature information in the radiating pipe;
step S44: acquiring a second duty ratio corresponding to the water temperature information;
step S45: judging whether the first duty ratio is smaller than the second duty ratio;
step S46: and when the first duty ratio is smaller than the second duty ratio, replacing the second duty ratio with the first duty ratio.
After the water temperature information is collected, the corresponding second duty ratio is determined according to the water temperature information, and in this embodiment, the second duty ratio corresponding to the currently detected water temperature information may be obtained in a map mode or by a table look-up method. After the second duty ratio is obtained, comparing the second duty ratio with the first duty ratio, and when the first duty ratio is larger than or equal to the second duty ratio, continuing to adjust the water pump by taking the first duty ratio as parameter information; when the first duty ratio is smaller than the second duty ratio, the water temperature is too high, and the flow of the water pump needs to be increased to increase the heat exchange efficiency of the cooling system. Therefore, the first duty ratio is replaced by the second duty ratio, the water pump is adjusted by taking the second duty ratio as the parameter information, namely, the duty ratio of the water pump is adjusted to the second duty ratio, so that the cooling efficiency of the cooling system is prevented from being influenced by overhigh water temperature, and the cooling stability of the cooling system is ensured.
Further, the cooling system further includes a heat dissipation fan, please refer to fig. 4, fig. 4 is a schematic flow chart of a fourth embodiment of the vehicle management method of the present invention, and after step S20, the method further includes:
step S50: judging whether the difference value is larger than or equal to a preset difference value or not;
step S60: and when the difference is greater than or equal to the preset difference, controlling the fan to be started.
After the difference value is obtained, comparing the difference value with a preset difference value, and when the difference value is smaller than the preset difference value, indicating that the currently detected temperature information is low, not starting the heat dissipation fan; and when the difference is greater than or equal to the preset difference, the currently detected temperature information is high, and in order to prevent the water pump from timely exchanging heat, the heat dissipation fan is started to assist in heat dissipation, so that the heat dissipation efficiency of the cooling system is improved. In addition, in this embodiment, a plurality of heat dissipation fans may be disposed, for example, one heat dissipation fan is disposed on each component of the driving system, and in addition, the blowing direction of the heat dissipation fan may also be disposed toward the heat dissipation pipe, so as to cool the water in the heat dissipation pipe, and further improve the reliability of the vehicle heat management method of the present invention.
Further, referring to fig. 5, fig. 5 is a schematic flow chart of a fifth embodiment of the automobile thermal management method according to the present invention, before step S10, the method further includes:
step S70: controlling the cooling system to operate at preset parameters for a preset time period.
In order to ensure stable operation of the cooling system, before the parameter information is acquired, the cooling system is controlled to operate by the preset parameters, and the preset parameters can be set according to the cooling effect. The preset time period can also be adjusted according to the cooling requirement, for example, the preset time period can be set to 2-5 minutes, and the like, that is, when the system is started, the water pump runs for 2-5 minutes at full speed.
After step S40, the method further includes:
step S80: acquiring the operating voltage of the cooling system;
step S90: determining the operation state of the cooling system according to the operation voltage and the parameter information;
step S100: and controlling the cooling system to suspend operation or keep operation according to the operation state.
In this embodiment, the operation voltage of the cooling system is collected, and in this embodiment, the collection of the operation voltage of the water pump is taken as an example for description. Judging the running state of the water pump according to a predefined running state of the water pump and a voltage performance condition corresponding to the running state (for example, if the running voltage is periodically changed for 4.5 seconds continuously at a high level and 0.5 seconds continuously at a low level, the water pump is considered to be normally operated, namely, if the running state is normal operation, and if the running voltage is periodically changed for 2.5 seconds continuously at a high level and 2.5 seconds continuously at a low level, the water pump is considered to have the conditions of stalling and the like, namely, if the running state is an abnormal state); and when the running state is the abnormal state, the running of the water pump is suspended, and a user is informed to carry out maintenance debugging and the like in time. It should be noted that, in this embodiment, the operating voltage of the water pump may be acquired through one pin through circuit design, and the connection condition of the pin may be determined by detecting pin information in real time, so as to further ensure stable detection.
In addition, in order to further improve the use safety, in this embodiment, the running state of the water pump and the connection condition of the pins can be transmitted to the in-vehicle T-Box through the network by setting the cloud server, and then the information is uploaded to the cloud server or the cloud end by the T-Box. When the cloud server detects the abnormal state sent by the T-Box, the corresponding vehicle is indicated to be in fault, so that the information is immediately sent to the user terminal equipment bound with the vehicle through signals such as electromagnetic waves, real-time transmission and monitoring of fault information are achieved, and vehicle using safety is guaranteed.
In addition, in order to solve the above problems, the present invention further provides an automobile thermal management device, where the automobile thermal management device includes a driving system, a cooling system, a temperature sensor, a PID controller, and an automobile thermal management program capable of running on the PID controller, the cooling system is connected to the driving system, and the cooling system is used to dissipate heat of the driving system; the temperature sensor is used for acquiring temperature information of the driving system; when being executed by the PID controller, the automobile thermal management program realizes the steps of the automobile thermal management method.
The invention is based on an automobile equipped with a thermal management device, and particularly comprises a driving system and a cooling system for cooling the driving system, wherein temperature sensors are distributed on the driving system to detect the temperature information of the driving system.
It should be noted that, in the present embodiment, the PID controller is configured to execute the vehicle thermal management program to implement the steps of the vehicle thermal management method as described above. Firstly, the temperature sensor is electrically connected with a PID controller, and the temperature information is transmitted to the PID controller through the temperature sensor for processing. Before the temperature information is processed, the preset temperature may be set, a difference between the temperature information and the preset temperature is calculated by a PID controller, and specifically, the temperature value in the temperature information is subtracted from the temperature value in the preset temperature, so as to obtain the difference.
After the difference value is obtained, the PID controller outputs a signal corresponding to the difference value to the cooling system through a PID algorithm according to the difference value, the cooling system takes the received signal as the parameter information, and the cooling system adjusts according to the parameter information to change the cooling efficiency, so that the calculation precision is improved, the cooling system can meet the cooling requirement, and resource waste is avoided.
According to the technical scheme, after the temperature information of the driving system is collected, the temperature information is compared with the preset temperature, and after the difference value between the temperature information and the preset temperature is obtained, the cooling efficiency of the cooling system is further determined through a PID algorithm, so that the accurate control of the cooling system is improved, the overheating damage of parts and components caused by the fact that the cooling system cannot dissipate heat in time is avoided, and meanwhile, the waste of energy consumption caused by excessive cooling is avoided.
In addition, in order to solve the above problem, the present invention further provides a computer-readable storage medium, where a vehicle thermal management program is stored, and when the vehicle thermal management program is executed by a processor, the steps of the vehicle thermal management method are implemented.
The invention is based on an automobile equipped with a thermal management device, and particularly comprises a driving system and a cooling system for cooling the driving system, wherein temperature sensors are distributed on the driving system to detect the temperature information of the driving system.
It should be noted that, in the present embodiment, the PID controller is configured to execute the vehicle thermal management program to implement the steps of the vehicle thermal management method as described above. Firstly, the temperature sensor is electrically connected with a PID controller, and the temperature information is transmitted to the PID controller through the temperature sensor for processing. Before the temperature information is processed, the preset temperature may be set, a difference between the temperature information and the preset temperature is calculated by a PID controller, and specifically, the temperature value in the temperature information is subtracted from the temperature value in the preset temperature, so as to obtain the difference.
After the difference value is obtained, the PID controller outputs a signal corresponding to the difference value to the cooling system through a PID algorithm according to the difference value, the cooling system takes the received signal as the parameter information, and the cooling system adjusts according to the parameter information to change the cooling efficiency, so that the calculation precision is improved, the cooling system can meet the cooling requirement, and resource waste is avoided.
According to the technical scheme, after the temperature information of the driving system is collected, the temperature information is compared with the preset temperature, and after the difference value between the temperature information and the preset temperature is obtained, the cooling efficiency of the cooling system is further determined through a PID algorithm, so that the accurate control of the cooling system is improved, the overheating damage of parts and components caused by the fact that the cooling system cannot dissipate heat in time is avoided, and meanwhile, the waste of energy consumption caused by excessive cooling is avoided.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A vehicle thermal management method is characterized by comprising a driving system and a cooling system for cooling the driving system, and the vehicle thermal management method comprises the following steps:
collecting temperature information of the driving system;
calculating a difference value between the temperature information and a preset temperature;
acquiring corresponding parameter information according to the difference value;
adjusting the cooling efficiency of the cooling system according to the parameter information.
2. The automotive thermal management method of claim 1, wherein the drive system comprises a battery assembly, a charging system, a motor, and a motor controller; the step of collecting temperature information of the drive system includes:
respectively acquiring a first temperature of the battery assembly, a second temperature of the charging system, a third temperature of the motor and a fourth temperature of the motor controller;
comparing the first temperature, the second temperature, the third temperature and the fourth temperature, and obtaining a maximum value of the first temperature, the second temperature, the third temperature and the fourth temperature;
and taking the maximum value as the temperature information.
3. The automotive thermal management method of claim 2, wherein the step of using the maximum value as the temperature information further comprises:
judging whether the maximum value is greater than or equal to the opening temperature;
when the maximum value is greater than or equal to the opening temperature, the maximum value is taken as the temperature information.
4. The automotive thermal management method according to claim 1, wherein the cooling system comprises a radiator, a radiating pipe and a water pump, the radiator is arranged on the driving system, the radiating pipe is connected with the radiator, and the water pump is arranged on the radiating pipe; the step of adjusting the cooling efficiency of the cooling system according to the parameter information comprises:
acquiring a first duty ratio according to the parameter information;
adjusting the water flow rate of the water pump to correspond to the first duty ratio.
5. The automotive thermal management method according to claim 4, further comprising, after the step of obtaining a first duty cycle based on the parameter information:
acquiring water temperature information in the radiating pipe;
acquiring a second duty ratio corresponding to the water temperature information;
judging whether the first duty ratio is smaller than the second duty ratio;
and when the first duty ratio is smaller than the second duty ratio, replacing the second duty ratio with the first duty ratio.
6. The automotive thermal management method according to claim 1, wherein the cooling system further comprises a heat dissipation fan, and after the step of calculating the difference between the temperature information and the preset temperature, the method further comprises:
judging whether the difference value is larger than or equal to a preset difference value or not;
and when the difference is greater than or equal to the preset difference, controlling the fan to be started.
7. The automotive thermal management method according to claim 1, wherein the step of collecting temperature information of the drive system is preceded by the step of:
controlling the cooling system to operate at preset parameters for a preset time period.
8. The automotive thermal management method of claim 1, further comprising, after the step of adjusting the cooling efficiency of the cooling system based on the parameter information:
acquiring the operating voltage of the cooling system;
determining the operation state of the cooling system according to the operation voltage and the parameter information;
and controlling the cooling system to suspend operation or keep operation according to the operation state.
9. An automotive thermal management device, comprising:
the automobile heat management system comprises a driving system, a cooling system, a temperature sensor, a PID controller and an automobile heat management program capable of running on the PID controller, wherein the cooling system is connected with the driving system and used for dissipating heat of the driving system; the temperature sensor is used for acquiring temperature information of the driving system;
the steps of the method for thermal management of a vehicle according to any one of claims 1 to 8 are implemented when the thermal management program of the vehicle is executed by the PID controller.
10. A computer-readable storage medium, having a vehicle thermal management program stored thereon, which when executed by a processor, implements the steps of the vehicle thermal management method as recited in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111344401.5A CN114043841A (en) | 2021-11-12 | 2021-11-12 | Automobile thermal management method and device and computer readable storage medium |
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| CN202111344401.5A CN114043841A (en) | 2021-11-12 | 2021-11-12 | Automobile thermal management method and device and computer readable storage medium |
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