CN117681729A - Control method and device for automobile thermal management system - Google Patents
Control method and device for automobile thermal management system Download PDFInfo
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- CN117681729A CN117681729A CN202410014079.7A CN202410014079A CN117681729A CN 117681729 A CN117681729 A CN 117681729A CN 202410014079 A CN202410014079 A CN 202410014079A CN 117681729 A CN117681729 A CN 117681729A
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Abstract
The application provides a control method and a device for an automobile thermal management system, wherein the method comprises the following steps: under a default mode, a first port of a three-way valve in the thermal management system is controlled to be communicated with a third port, and the thermal management system is controlled to close a first switch valve and open a second switch valve; when the triggering reversing zone bit is detected, the thermal management system is controlled to open the first switch valve and close the second switch valve, and the first port and the second port of the three-way valve are controlled to be communicated; when the reversing flag bit is detected again, the thermal management system is controlled to open the second switch valve and close the first switch valve, and the first port and the third port of the three-way valve are controlled to be communicated. Therefore, the method and the device can periodically switch the three-way valve and the switch valve in the heating or cooling process so as to realize the direction change mode of the cooling liquid flowing through the battery, thereby improving the heating or cooling efficiency, reducing the influence on the core working condition, improving the working performance and the safety of the battery and prolonging the service life of the battery.
Description
Technical Field
The application relates to the technical field of thermal management, in particular to a control method and device of an automobile thermal management system.
Background
At present, when the whole vehicle power battery works, factors such as charge and discharge state difference, internal resistance difference, current fluctuation and the like of each battery core can cause ageing state difference of single batteries after multiple cycles, and further cause performance difference among the single batteries, and researches show that the temperature gradient among the modules reduces the capacity and service life of the whole battery pack, so that the temperature uniformity among the modules in the battery pack needs to be maintained, and the temperature difference among the general battery cores does not exceed 5 ℃. In the existing automobile heat management method, a fixed water inlet and a fixed water outlet are commonly adopted, a battery independent loop only comprises a water pump, and cooling liquid heated by a heater or cooled by a condenser is conveyed into the water inlet of a battery and then flows out of a water return pump from the water outlet so as to circulate. However, in practice, the existing methods have been found to be inefficient in heating or cooling, and have a greater impact on core operating conditions such as low temperature charging, thereby increasing charging time and reducing battery life.
Disclosure of Invention
An object of the embodiment of the application is to provide a control method and a device for an automobile thermal management system, which can periodically switch a three-way valve and a switch valve in a heating or cooling process so as to realize a cooling liquid reversing mode of a battery, thereby improving heating or cooling efficiency, reducing influence on core working conditions, enabling the working environment of the battery to be better, improving the working performance and safety of the battery and prolonging the service life of the battery.
The first aspect of the application provides a control method of an automobile thermal management system, comprising the following steps:
in a default mode, a first port and a third port of a three-way valve in the thermal management system are controlled to be communicated, and the thermal management system is controlled to close a first switch valve and open a second switch valve;
when the trigger reversing flag bit is detected, controlling the thermal management system to enter a first reversing mode based on the reversing flag bit;
in the first reversing mode, controlling the thermal management system to open the first switch valve and close the second switch valve, and controlling the first port and the second port of the three-way valve to be communicated;
zero the reversing mark position;
when the reversing zone bit is detected to be triggered again, controlling the thermal management system to enter a second reversing mode based on the reversing zone bit;
and in the two-reversing mode, controlling the thermal management system to open the second switch valve and close the first switch valve, and controlling the first port and the third port of the three-way valve to be communicated.
Further, the thermal management system at least comprises the three-way valve, the first switching valve, the second switching valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor and a pressure regulating device.
Further, after said controlling said thermal management system to open said second on-off valve and to close said first on-off valve, said method further comprises:
acquiring a first battery maximum cell temperature difference of the battery pack within a first preset time period;
judging whether the maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold value or not;
and if so, triggering a reversing zone bit, executing the reversing zone bit, and controlling the thermal management system to enter a first reversing mode.
Further, the method further comprises:
and when judging that the maximum cell temperature difference of the first battery does not exceed the first temperature difference threshold value, triggering a reversing zone bit after the first preset time period, executing the reversing zone bit, and controlling the thermal management system to enter a first reversing mode.
Further, after zeroing the commutation flag, the method further comprises:
acquiring a second battery maximum cell temperature difference of the battery pack within a second preset time period;
judging whether the maximum cell temperature difference of the second battery exceeds a preset second temperature difference threshold value or not;
and if so, triggering the reversing zone bit again, and executing the reversing zone bit-based control of the thermal management system to enter a second reversing mode.
A second aspect of the present application provides an automotive thermal management system control apparatus, including:
the first control unit is used for controlling the first port and the third port of the three-way valve in the thermal management system to be communicated in a default mode, and controlling the thermal management system to close the first switch valve and open the second switch valve;
the second control unit is used for controlling the thermal management system to enter a first reversing mode based on the reversing zone bit when the triggering reversing zone bit is detected;
the third control unit is used for controlling the thermal management system to open the first switch valve and close the second switch valve and controlling the first port and the second port of the three-way valve to be communicated in the first reversing mode;
the zero setting unit is used for setting the reversing marker position to zero;
the fourth control unit is used for controlling the thermal management system to enter a second reversing mode based on the reversing flag bit when the reversing flag bit is detected to be triggered again;
and the fifth control unit is used for controlling the thermal management system to open the second switch valve and close the first switch valve under the two reversing modes, and controlling the first port and the third port of the three-way valve to be communicated.
Further, the thermal management system at least comprises the three-way valve, the first switching valve, the second switching valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor and a pressure regulating device.
Further, the automobile thermal management system control device further includes:
the first obtaining unit is used for obtaining the maximum cell temperature difference of the first cell of the cell pack within a first preset time period after the fifth control unit controls the thermal management system to open the second switch valve and close the first switch valve;
the first judging unit is used for judging whether the maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold value or not;
and the zone bit triggering unit is used for triggering a reversing zone bit when judging that the maximum cell temperature difference of the first battery exceeds the first temperature difference threshold value, and triggering the second control unit to control the thermal management system to enter a first reversing mode based on the reversing zone bit.
Further, the flag bit triggering unit is further configured to trigger a reversing flag bit after the first preset time period when it is determined that the maximum temperature difference of the first battery cell does not exceed the first temperature difference threshold, and trigger the second control unit to control the thermal management system to enter a first reversing mode based on the reversing flag bit.
Further, the automobile thermal management system control device further includes:
the second obtaining unit is used for obtaining the maximum cell temperature difference of the second battery of the battery pack within a second preset time period after the zero setting unit is used for setting the reversing mark position to zero;
the second judging unit is used for judging whether the maximum cell temperature difference of the second battery exceeds a preset second temperature difference threshold value;
the zone bit triggering unit is further configured to trigger the reversing zone bit again when the maximum cell temperature difference of the second battery exceeds a preset second temperature difference threshold value, and trigger the fourth control unit to control the thermal management system to enter a second reversing mode based on the reversing zone bit.
A third aspect of the present application provides an electronic device comprising a memory for storing a computer program and a processor that runs the computer program to cause the electronic device to execute the method for controlling the thermal management system of the automobile according to any one of the first aspect of the present application.
A fourth aspect of the present application provides a computer readable storage medium storing computer program instructions which, when read and executed by a processor, perform the method of controlling a thermal management system of an automobile according to any one of the first aspects of the present application.
The beneficial effects of this application are: according to the method and the device, the three-way valve and the switch valve can be periodically switched in the heating or cooling process, so that the effect of reversing the cooling liquid flowing through the battery is achieved, the heating or cooling efficiency is further improved, the influence on the core working condition is reduced, and the working performance, the safety and the service life of the battery are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a control method of an automotive thermal management system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of another control method of an automotive thermal management system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a control device of an automotive thermal management system according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another control device of an automotive thermal management system according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a battery thermal management architecture according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a control method of an automotive thermal management system according to the present embodiment. The control method of the automobile thermal management system comprises the following steps:
s101, in a default mode, controlling a first port and a third port of a three-way valve in the thermal management system to be communicated, and controlling the thermal management system to close a first switch valve and open a second switch valve.
In this embodiment, the thermal management system can address the existing temperature difference problem of the battery cell, and a new thermal management architecture (fig. 5) of the battery is provided. The dashed line frame is an improvement part provided by the application, and compared with the original thermal management framework, the framework is newly added with a three-way valve, two switching valves, two three-way valves, a four-way valve and a plurality of pipelines (according to the arrangement condition of the whole vehicle).
In this embodiment, the thermal management system includes at least a three-way valve, a first switch valve, a second switch valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor, and a pressure regulating device. The thermal management system may further include a valve body for controlling operation of the loop, two tee joints, a four-way joint, and a plurality of pipes (depending on the overall arrangement of the vehicle).
In this embodiment, the first Port refers to Port a, the second Port refers to Port B, and the third Port refers to Port C.
In the present embodiment, the first switching valve refers to the switching valve X, and the second switching valve refers to the switching valve Y.
And S102, controlling the thermal management system to enter a first reversing mode based on the reversing flag bit when the triggering reversing flag bit is detected.
S103, under the first reversing mode, the thermal management system is controlled to open the first switching valve and close the second switching valve, and the first port and the second port of the three-way valve are controlled to be communicated.
S104, setting the reversing flag position to be zero.
And S105, controlling the thermal management system to enter a second reversing mode based on the reversing flag bit when the reversing flag bit is detected to be triggered again.
And S106, under the two-reversing mode, controlling the thermal management system to open the second switch valve and close the first switch valve, and controlling the first port and the third port of the three-way valve to be communicated.
In the embodiment, the method mainly adopts an open-loop control strategy, and the three-way valve, the switch valve X and the switch valve Y are periodically switched in the heating/cooling process so as to realize the direction change mode of the cooling liquid flowing through the battery, and monitor the maximum temperature difference of the battery cells in the process, thereby realizing the purpose of reducing the temperature difference of the cells in the battery. In the process, pressure alternation and impact can be generated inside the loop due to the fact that multiple commutations are involved; therefore, how to release pressure during reversing, the design of the overflow port and the reversing time sequence are critical to the operation of the system and the protection of internal components.
In this embodiment, the execution subject of the method may be a computing device such as a computer or a server, which is not limited in this embodiment.
In this embodiment, the execution body of the method may be an intelligent device such as a smart phone or a tablet computer, which is not limited in this embodiment.
Therefore, by implementing the control method of the automobile thermal management system described in the embodiment, the limit value generated by the temperature difference of the battery cell can be reduced under the condition of low temperature, so that the heating water temperature is improved, the heating efficiency is improved, and the effect of reducing the heating time and the charging time is achieved; the temperature difference generated by structural arrangement inside the battery can be actively reduced under other daily working conditions, so that the working environment of the battery is better, the working performance and the safety of the battery are improved, and the service life of the battery is prolonged.
Example 2
Referring to fig. 2, fig. 2 is a flow chart of a control method of an automotive thermal management system according to the present embodiment. The control method of the automobile thermal management system comprises the following steps:
s201, in a default mode, controlling a first port and a third port of a three-way valve in the thermal management system to be communicated, and controlling the thermal management system to close a first switch valve and open a second switch valve.
In this embodiment, the thermal management system includes at least a three-way valve, a first switch valve, a second switch valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor, and a pressure regulating device.
In this embodiment, reference may be continued to fig. 5. In the default mode, the three-way valve is connected from Port A to Port C, the switching valve X is closed, and the switching valve Y is opened, and at the moment, the cooling liquid in the battery pack flows from the water Port N to the water Port M.
S202, controlling the thermal management system to enter a first reversing mode based on the reversing flag bit.
In this embodiment, when the operation is continued for a period of time in step S201, or the maximum cell temperature difference of the battery exceeds the threshold value, the commutation flag is triggered.
S203, in the first reversing mode, the thermal management system is controlled to open the first switching valve and close the second switching valve, and the first port and the second port of the three-way valve are controlled to be communicated.
In this embodiment, when the commutation flag bit is triggered, the method starts to commutate. Specifically, the method can open the switch valve X, and after the switch valve X is opened, the cooling liquid in the battery still flows from N to M, but the pressure is reduced.
In this embodiment, the switch valve Y is closed, and the cooling liquid in the battery flows from N to M, and needs to be decompressed through the gas overflow pipe.
In this embodiment, the three-way valve is switched to Port a to Port B to realize reversing.
S204, setting the reversing flag position to be zero.
In this embodiment, the method may zero the reversing flag at this point, where the flow of cooling fluid inside the battery pack flows from the water port M to the water port N.
As an alternative embodiment, the maximum cell temperature difference of the second battery of the battery pack is obtained within the second preset time period;
judging whether the maximum cell temperature difference of the second battery exceeds a preset second temperature difference threshold value;
and if so, triggering the reversing flag bit again, and executing the control of the thermal management system to enter a second reversing mode based on the reversing flag bit.
And S205, controlling the thermal management system to enter a second reversing mode based on the reversing flag bit when the reversing flag bit is detected to be triggered again.
In this embodiment, when the commutation mode is detected to continue to run for a period of time, or the maximum cell temperature difference of the battery exceeds the threshold value, the commutation flag bit is activated again.
S206, under the two-reversing mode, the thermal management system is controlled to open the second switch valve and close the first switch valve, and the first port and the third port of the three-way valve are controlled to be communicated.
In this embodiment, when the reversing flag is triggered, the reversing is started, the switching valve Y is opened first, and the cooling liquid in the battery flows from M to N, but the pressure is reduced.
In this embodiment, the on-off valve X is closed, and the flow rate in the battery pack drops to 0.
In the embodiment, the three-way valve is switched to Port A-Port C to realize reversing, the reversing mark position is zero, and the cooling liquid in the battery pack flows from the water gap N to the water gap M.
S207, acquiring a first battery maximum cell temperature difference of the battery pack within a first preset time period.
S208, judging whether the maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold value, if so, executing the step S202; if not, after the first preset period of time, step S202 is performed.
In this embodiment, when the maximum core temperature difference of the first battery exceeds the preset first temperature difference threshold, the reversing flag bit is triggered, and step S202 is executed.
In this embodiment, when the maximum cell temperature difference of the first battery does not exceed the preset first temperature difference threshold, after a first preset period of time, the commutation flag bit is triggered, and step S202 is performed.
In this embodiment, the execution subject of the method may be a computing device such as a computer or a server, which is not limited in this embodiment.
In this embodiment, the execution body of the method may be an intelligent device such as a smart phone or a tablet computer, which is not limited in this embodiment.
Therefore, by implementing the control method of the automobile thermal management system described in the embodiment, the limit value generated by the temperature difference of the battery cell can be reduced under the condition of low temperature, so that the heating water temperature is improved, the heating efficiency is improved, and the effect of reducing the heating time and the charging time is achieved; the temperature difference generated by structural arrangement inside the battery can be actively reduced under other daily working conditions, so that the working environment of the battery is better, the working performance and the safety of the battery are improved, and the service life of the battery is prolonged.
Example 3
Referring to fig. 3, fig. 3 is a schematic structural diagram of a control device of an automotive thermal management system according to the present embodiment. As shown in fig. 3, the automobile thermal management system control device includes:
a first control unit 310, configured to control, in a default mode, the first port and the third port of the three-way valve in the thermal management system to be communicated, and control the thermal management system to close the first switch valve and open the second switch valve;
a second control unit 320, configured to control the thermal management system to enter the first commutation mode based on the commutation flag bit when the trigger commutation flag bit is detected;
a third control unit 330, configured to control the thermal management system to open the first switch valve and close the second switch valve, and control the first port and the second port of the three-way valve to communicate in the first reversing mode;
a zero setting unit 340, configured to zero the reversing flag;
a fourth control unit 350, configured to control, based on the commutation flag bit, the thermal management system to enter a second commutation mode when detecting that the commutation flag bit is triggered again;
the fifth control unit 360 is configured to control the thermal management system to open the second switch valve and close the first switch valve, and control the first port and the third port of the three-way valve to be communicated in the two-way reversing mode.
In this embodiment, the explanation of the control device of the thermal management system of the automobile may refer to the description in embodiment 1 or embodiment 2, and the description is not repeated in this embodiment.
Therefore, the control device of the automobile thermal management system described in the embodiment can reduce the limit value generated by the temperature difference of the battery cell under the condition of low temperature environment, so as to improve the heating water temperature, improve the heating efficiency and achieve the effect of reducing the heating time and the charging time; the temperature difference generated by structural arrangement inside the battery can be actively reduced under other daily working conditions, so that the working environment of the battery is better, the working performance and the safety of the battery are improved, and the service life of the battery is prolonged.
Example 4
Referring to fig. 4, fig. 4 is a schematic structural diagram of a control device of an automotive thermal management system according to the present embodiment. As shown in fig. 4, the automobile thermal management system control device includes:
a first control unit 310, configured to control, in a default mode, the first port and the third port of the three-way valve in the thermal management system to be communicated, and control the thermal management system to close the first switch valve and open the second switch valve;
a second control unit 320, configured to control the thermal management system to enter the first commutation mode based on the commutation flag bit when the trigger commutation flag bit is detected;
a third control unit 330, configured to control the thermal management system to open the first switch valve and close the second switch valve, and control the first port and the second port of the three-way valve to communicate in the first reversing mode;
a zero setting unit 340, configured to zero the reversing flag;
a fourth control unit 350, configured to control, based on the commutation flag bit, the thermal management system to enter a second commutation mode when detecting that the commutation flag bit is triggered again;
the fifth control unit 360 is configured to control the thermal management system to open the second switch valve and close the first switch valve, and control the first port and the third port of the three-way valve to be communicated in the two-way reversing mode.
In this embodiment, the thermal management system includes at least a three-way valve, a first switch valve, a second switch valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor, and a pressure regulating device.
As an alternative embodiment, the automobile thermal management system control device further includes:
a first obtaining unit 370, configured to obtain a first maximum cell temperature difference of the battery pack within a first preset time period after the fifth control unit 360 controls the thermal management system to open the second switch valve and close the first switch valve;
a first determining unit 380, configured to determine whether a maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold;
the flag triggering unit 390 is configured to trigger a reversing flag when it is determined that the maximum core temperature difference of the first battery exceeds the first temperature difference threshold, and trigger the second control unit 320 to control the thermal management system to enter the first reversing mode based on the reversing flag.
As an optional implementation manner, the flag triggering unit 390 is further configured to trigger a reversing flag after a first preset period of time and trigger the second control unit 320 to control the thermal management system to enter the first reversing mode based on the reversing flag when it is determined that the maximum cell temperature difference of the first battery does not exceed the first temperature difference threshold.
As an alternative embodiment, the automobile thermal management system control device further includes:
a second obtaining unit 400, configured to obtain a second maximum cell temperature difference of the second battery of the battery pack within a second preset time period after the zero setting unit 340 sets the reversing flag to zero;
a second determining unit 410, configured to determine whether a maximum core temperature difference of the second battery exceeds a preset second temperature difference threshold;
the flag triggering unit 390 is further configured to trigger the reversing flag again when the maximum core temperature difference of the second battery exceeds a preset second temperature difference threshold, and trigger the fourth control unit 350 to control the thermal management system to enter the second reversing mode based on the reversing flag.
In this embodiment, the explanation of the control device of the thermal management system of the automobile may refer to the description in embodiment 1 or embodiment 2, and the description is not repeated in this embodiment.
Therefore, the control device of the automobile thermal management system described in the embodiment can reduce the limit value generated by the temperature difference of the battery cell under the condition of low temperature environment, so as to improve the heating water temperature, improve the heating efficiency and achieve the effect of reducing the heating time and the charging time; the temperature difference generated by structural arrangement inside the battery can be actively reduced under other daily working conditions, so that the working environment of the battery is better, the working performance and the safety of the battery are improved, and the service life of the battery is prolonged.
An embodiment of the present application provides an electronic device, including a memory and a processor, where the memory is configured to store a computer program, and the processor is configured to execute the computer program to cause the electronic device to execute a method for controlling an automotive thermal management system in embodiment 1 or embodiment 2 of the present application.
The present embodiment provides a computer readable storage medium storing computer program instructions that, when read and executed by a processor, perform the method for controlling the thermal management system of the automobile of embodiment 1 or embodiment 2 of the present application.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners as well. The apparatus embodiments described above are merely illustrative, for example, flow diagrams and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A control method of an automotive thermal management system, comprising:
in a default mode, a first port and a third port of a three-way valve in the thermal management system are controlled to be communicated, and the thermal management system is controlled to close a first switch valve and open a second switch valve;
when the trigger reversing flag bit is detected, controlling the thermal management system to enter a first reversing mode based on the reversing flag bit;
in the first reversing mode, controlling the thermal management system to open the first switch valve and close the second switch valve, and controlling the first port and the second port of the three-way valve to be communicated;
zero the reversing mark position;
when the reversing zone bit is detected to be triggered again, controlling the thermal management system to enter a second reversing mode based on the reversing zone bit;
and in the two-reversing mode, controlling the thermal management system to open the second switch valve and close the first switch valve, and controlling the first port and the third port of the three-way valve to be communicated.
2. The method according to claim 1, wherein the thermal management system includes at least the three-way valve, the first switching valve, the second switching valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor, and a pressure regulating device.
3. The method of controlling a thermal management system of an automobile according to claim 2, wherein after said controlling the thermal management system to open the second switching valve and to close the first switching valve, the method further comprises:
acquiring a first battery maximum cell temperature difference of the battery pack within a first preset time period;
judging whether the maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold value or not;
and if so, triggering a reversing zone bit, executing the reversing zone bit, and controlling the thermal management system to enter a first reversing mode.
4. A method of controlling a thermal management system of an automobile according to claim 3, further comprising:
and when judging that the maximum cell temperature difference of the first battery does not exceed the first temperature difference threshold value, triggering a reversing zone bit after the first preset time period, executing the reversing zone bit, and controlling the thermal management system to enter a first reversing mode.
5. The method for controlling a thermal management system of an automobile according to claim 2, wherein after zeroing the reversing flag, the method further comprises:
acquiring a second battery maximum cell temperature difference of the battery pack within a second preset time period;
judging whether the maximum cell temperature difference of the second battery exceeds a preset second temperature difference threshold value or not;
and if so, triggering the reversing zone bit again, and executing the reversing zone bit-based control of the thermal management system to enter a second reversing mode.
6. An automotive thermal management system control device, characterized in that the automotive thermal management system control device comprises:
the first control unit is used for controlling the first port and the third port of the three-way valve in the thermal management system to be communicated in a default mode, and controlling the thermal management system to close the first switch valve and open the second switch valve;
the second control unit is used for controlling the thermal management system to enter a first reversing mode based on the reversing zone bit when the triggering reversing zone bit is detected;
the third control unit is used for controlling the thermal management system to open the first switch valve and close the second switch valve and controlling the first port and the second port of the three-way valve to be communicated in the first reversing mode;
the zero setting unit is used for setting the reversing marker position to zero;
the fourth control unit is used for controlling the thermal management system to enter a second reversing mode based on the reversing flag bit when the reversing flag bit is detected to be triggered again;
and the fifth control unit is used for controlling the thermal management system to open the second switch valve and close the first switch valve under the two reversing modes, and controlling the first port and the third port of the three-way valve to be communicated.
7. The automotive thermal management system control apparatus of claim 6, wherein the thermal management system comprises at least the three-way valve, the first switching valve, the second switching valve, a battery pack, a power source, a heating device, a cooling device, a water temperature sensor, and a pressure regulating device.
8. The automotive thermal management system control apparatus according to claim 7, characterized in that the automotive thermal management system control apparatus further comprises:
the first obtaining unit is used for obtaining the maximum cell temperature difference of the first cell of the cell pack within a first preset time period after the fifth control unit controls the thermal management system to open the second switch valve and close the first switch valve;
the first judging unit is used for judging whether the maximum cell temperature difference of the first battery exceeds a preset first temperature difference threshold value or not;
and the zone bit triggering unit is used for triggering a reversing zone bit when judging that the maximum cell temperature difference of the first battery exceeds the first temperature difference threshold value, and triggering the second control unit to control the thermal management system to enter a first reversing mode based on the reversing zone bit.
9. An electronic device comprising a memory for storing a computer program and a processor that runs the computer program to cause the electronic device to execute the automobile thermal management system control method according to any one of claims 1 to 5.
10. A readable storage medium, wherein computer program instructions are stored in the readable storage medium, which when read and executed by a processor, perform the method of controlling a thermal management system of an automobile according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410014079.7A CN117681729A (en) | 2024-01-02 | 2024-01-02 | Control method and device for automobile thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410014079.7A CN117681729A (en) | 2024-01-02 | 2024-01-02 | Control method and device for automobile thermal management system |
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| Publication Number | Publication Date |
|---|---|
| CN117681729A true CN117681729A (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410014079.7A Pending CN117681729A (en) | 2024-01-02 | 2024-01-02 | Control method and device for automobile thermal management system |
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| Country | Link |
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| CN (1) | CN117681729A (en) |
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- 2024-01-02 CN CN202410014079.7A patent/CN117681729A/en active Pending
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