CN114559857B - Control method and device for thermal management system - Google Patents

Abstract

A thermal management system control method and device, including: when detecting that the battery of an electric vehicle needs to be cooled, controlling the water pump of the battery cooling circuit to not operate, and opening the solenoid valve of the thermal management system so that the refrigerant of the air conditioning system flows through the exchanger. The heater exchanges heat with the battery coolant in the battery cooling circuit; after the preset first period of time, the solenoid valve is closed to allow the refrigerant to completely flow through the air conditioning circuit, and the water pump is controlled to start running so that the battery in the heat exchanger The coolant flows in the battery cooling circuit to cool the battery coolant in the battery cooling circuit; after the preset second time period, the solenoid valve is opened and the water pump is controlled to stop running; when the temperature of the battery coolant in the battery cooling circuit reaches the preset When the setting is within a reasonable range, the solenoid valve and water pump are turned on at the same time for battery cooling control, which can reduce the temperature impact on the passenger compartment air conditioning system when the battery is cooling, and can also avoid high-frequency opening and closing noise of the valve and ensure the NVH performance of the entire vehicle.

Description

A thermal management system control method and device

Technical field

The present application relates to the field of automotive technology, specifically, to a thermal management system control method and device.

Background technique

At present, electric vehicles as new energy vehicles have received widespread attention from all walks of life. During the operation of electric vehicles, the temperature of the battery core will be maintained within a certain temperature range through the cooling system of the vehicle, allowing the battery core to charge and discharge normally. . In existing electric vehicles, the control method of the thermal management system is usually coupled with the passenger cabin air conditioning system through a heat exchanger. The battery cooling circuit and the passenger cabin air conditioning circuit share an air compressor, and the air conditioning refrigerant and battery coolant are heated in the Chiller. swap, thereby cooling the battery. However, in practice, it has been found that the existing method will cause the temperature of the air conditioning outlet to suddenly change in the passenger compartment, causing discomfort to the driver and passengers. It is also prone to high-frequency opening and closing noise of the valve, thus affecting the NVH performance of the entire vehicle.

Contents of the invention

The purpose of the embodiments of this application is to provide a thermal management system control method and device that can reduce the temperature impact on the passenger cabin air conditioning system when the battery is cooling, and at the same time avoid high-frequency opening and closing noise of valves, thereby ensuring the NVH of the entire vehicle. performance.

The first aspect of the embodiment of the present application provides a thermal management system control method, including:

When it is detected that the battery of the electric vehicle needs to be cooled, the water pump of the battery cooling circuit is not operated and the solenoid valve of the thermal management system is opened so that the refrigerant of the air conditioning system flows through the heat exchanger and the battery cooling circuit. Battery coolant performs heat exchange;

After the preset first period of time, the solenoid valve is closed to allow the refrigerant to completely flow through the air conditioning circuit, and the water pump is controlled to start operating so that the battery coolant in the heat exchanger is The battery cooling liquid flows in the cooling circuit to cool the battery;

After the preset second time period, open the solenoid valve and control the water pump to stop running;

When the temperature of the battery cooling fluid reaches a preset reasonable range, the solenoid valve and the water pump are turned on at the same time to perform battery cooling control.

In the above implementation process, when it is detected that the battery of the electric vehicle needs to be cooled, the water pump that controls the battery cooling circuit does not operate, and the solenoid valve of the thermal management system is opened so that the refrigerant of the air conditioning system flows through the heat exchanger and the battery cooling circuit. The battery coolant in the heat exchanger performs heat exchange; after the preset first period of time, the solenoid valve is closed to allow the refrigerant to completely flow through the air conditioning circuit, and the water pump is controlled to start running, so that the battery coolant in the heat exchanger is cooled by the battery. The battery coolant in the battery cooling circuit is cooled by flowing in the circuit; after the preset second time period, the solenoid valve is opened and the water pump is controlled to stop running; when the temperature of the battery coolant in the battery cooling circuit reaches the preset reasonable range When the battery is cooled, the solenoid valve and water pump are turned on at the same time for battery cooling control, which can reduce the temperature impact on the passenger compartment air conditioning system when the battery is cooling. It can also avoid high-frequency opening and closing noise of the valve, thereby ensuring the NVH performance of the entire vehicle.

Further, the method also includes:

Determine whether the temperature of the battery coolant in the battery cooling circuit reaches a preset reasonable range;

If so, perform the above steps and simultaneously turn on the solenoid valve and the water pump for battery cooling control;

If not, perform the step of closing the solenoid valve after the preset first period of time.

Further, the method also includes:

Detect the battery temperature of electric vehicle batteries through the battery management system;

Determine whether the battery has cooling needs based on the battery temperature;

If so, the water pump of the battery cooling circuit is not operated and the solenoid valve of the thermal management system is opened.

Further, the method also includes:

When it is determined that the battery has no cooling requirement, the water pump is controlled not to operate and the solenoid valve is closed.

The second aspect of the embodiment of the present application provides a thermal management system control device. The thermal management system control device includes:

The opening unit is used to control the water pump of the battery cooling circuit not to operate when it is detected that the battery of the electric vehicle needs to be cooled, and to open the solenoid valve of the thermal management system so that the refrigerant of the air conditioning system flows through the heat exchanger and the battery cooling The battery coolant in the circuit performs heat exchange;

A closing unit configured to close the solenoid valve after a preset first period of time to allow the refrigerant to completely flow through the air conditioning circuit;

A control unit configured to control the water pump to start operating so that the battery cooling liquid in the heat exchanger flows in the battery cooling circuit to cool the battery cooling liquid;

The opening unit is also used to open the solenoid valve after the preset second time period and control the water pump to stop running; when the temperature of the battery coolant reaches a preset reasonable range, the solenoid valve is opened at the same time. The solenoid valve and the water pump perform battery cooling control.

In the above implementation process, when the opening unit detects that the battery of the electric vehicle needs to be cooled, it controls the water pump of the battery cooling circuit to not operate, and opens the solenoid valve of the thermal management system so that the refrigerant of the air conditioning system flows through the heat exchanger and the battery. The battery coolant in the cooling circuit performs heat exchange; the shutdown unit closes the solenoid valve after the preset first period of time to allow the refrigerant to completely flow through the air conditioning circuit, and the control unit controls the water pump to start operating so that the battery in the heat exchanger The coolant flows in the battery cooling circuit to cool the battery coolant; after the preset second time period, the opening unit opens the solenoid valve and controls the water pump to stop running; when the temperature of the battery coolant reaches a preset reasonable range, Then the solenoid valve and water pump are turned on at the same time for battery cooling control, which can reduce the temperature impact on the passenger compartment air conditioning system when the battery is cooling, and can also avoid high-frequency opening and closing noise of the valve, thereby ensuring the NVH performance of the entire vehicle.

Further, the thermal management system control device also includes:

The first judgment unit is used to judge whether the temperature of the battery cooling liquid reaches a preset reasonable range; if so, trigger the opening unit to simultaneously turn on the solenoid valve and the water pump for battery cooling control; if not, trigger The closing unit closes the solenoid valve after a preset first period of time.

Further, the thermal management system control device also includes:

A detection unit for detecting the battery temperature of the electric vehicle battery through the battery management system;

The second judgment unit is used to judge whether the battery has cooling needs according to the battery temperature; if so, trigger the opening unit to control the water pump of the battery cooling circuit to not operate, and open the solenoid valve of the thermal management system.

Further, the control unit is also configured to control the water pump not to operate and close the solenoid valve when it is determined that the battery has no cooling requirement.

The third aspect of the embodiment of the present application provides an electronic device, including a memory and a processor. The memory is used to store a computer program. The processor runs the computer program to cause the electronic device to execute the first embodiment of the present application. The thermal management system control method according to any one of the aspects.

The fourth aspect of the embodiments of the present application provides a computer-readable storage medium that stores computer program instructions. When the computer program instructions are read and run by a processor, any one of the first aspects of the embodiments of the present application is executed. The thermal management system control method described in the item.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, therefore This should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic flow chart of a thermal management system control method provided by an embodiment of the present application;

Figure 2 is a schematic structural diagram of a thermal management system control device provided by an embodiment of the present application;

Figure 3 is a schematic diagram of a battery cooling circuit of an electric vehicle thermal management system provided by an embodiment of the present application;

Figure 4 is a control process diagram of a thermal management system control method provided by an embodiment of the present application.

Detailed ways

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 similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to differentiate the description and cannot be understood as indicating or implying relative importance.

Example 1

Please refer to FIG. 1 , which is a schematic flow chart of a thermal management system control method according to an embodiment of the present application. Among them, the thermal management system control method includes:

S101. Detect the battery temperature of the electric vehicle battery through the battery management system.

In the embodiment of the present application, the method belongs to the technical field of electric vehicle thermal management system control, and is a coordinated control method applied to a common thermal management system architecture (solenoid valve and thermal expansion valve).

In the embodiment of the present application, the execution subject of the method can be a thermal management system control device. Specifically, the thermal management system control device can run on computers, servers, smart phones, tablets and other devices. In this embodiment, Without any qualification.

S102. Determine whether the battery needs cooling according to the battery temperature. If not, perform step S103; if yes, perform step S104.

S103. Control the water pump not to operate, close the solenoid valve, and execute steps S101 to S102.

Please refer to Figure 3 together. Figure 3 is a schematic diagram of a battery cooling circuit of an electric vehicle thermal management system provided by an embodiment of the present application. As shown in Figure 3, HVAC represents the passenger cabin air conditioning system and its cooling circuit, and AC COND represents air conditioning. System radiator, TXV means thermal expansion valve, SOV means solenoid valve, Chiller means heat exchanger, HV BATT means power battery (that is, the battery of the battery cooling circuit), and Pump means the water pump of the battery cooling circuit.

In the embodiment of the present application, the battery temperature of the electric vehicle battery is detected through the battery management system, that is, the battery temperature of the power battery HV BATT is detected.

Please refer to Figure 4 together. Figure 4 is a control process diagram of a thermal management system control method provided by an embodiment of the present application. When the battery has no cooling demand, the water pump of the battery cooling circuit does not operate and the solenoid valve (SOV) is closed. In this state, all the refrigerant in the air conditioning system flows through the air conditioning circuit (HVAC) and is used for passenger cabin air conditioning and refrigeration.

After step S103, the following steps are also included:

S104. Control the water pump of the battery cooling circuit to stop running, and open the solenoid valve of the thermal management system so that the refrigerant of the air conditioning system flows through the heat exchanger to exchange heat with the battery coolant in the battery cooling circuit.

In the embodiment of this application, when the battery needs cooling, the vehicle controller (VCU) controls the solenoid valve to open, so that part of the refrigerant can flow through the heat exchanger (Chiller) and exchange heat with the battery coolant in the battery cooling circuit. ; At this time, the water pump remains not running, so that the refrigerant can only exchange heat with the battery coolant in the heat exchanger. Since the volume of battery coolant in the heat exchanger is small, it can complete heat exchange with the refrigerant in a short time. Not much refrigerant is separated, and the temperature impact on the air conditioning system is small. Therefore, the temperature rise at the air outlet of the passenger compartment is also small. .

S105. After the preset first period of time, close the solenoid valve to allow the refrigerant to completely flow through the air conditioning circuit, and control the water pump to start running so that the battery coolant in the heat exchanger flows in the battery cooling circuit to the battery cooling circuit. Cool the battery coolant in the battery.

In the embodiment of this application, after waiting for the preset first period of time (T1), the refrigerant and the battery coolant in the heat exchanger complete heat exchange, and the temperature of the battery coolant drops; at this time, the vehicle controller controls the solenoid valve to close, causing The refrigerant completely flows through the air conditioning circuit, and at the same time, the water pump is controlled to start running, so that the low-temperature battery coolant in the heat exchanger flows in the battery cooling circuit, thereby cooling the high-temperature battery coolant in the battery cooling circuit.

After step S105, the following steps are also included:

S106. After the preset second time period, open the solenoid valve and control the water pump to stop running.

S107. Determine whether the temperature of the battery cooling fluid in the battery cooling circuit reaches a preset reasonable range. If not, execute steps S105 to S107; if yes, execute step S108.

In the embodiment of the present application, after waiting for the preset second period of time (T2), the battery cooling liquid in the battery cooling circuit completes heat exchange and the temperature no longer changes; at this time, the operations of steps S105 to S107 are repeated to control the solenoid valve to open , the water pump stops running, allowing part of the refrigerant to flow through the heat exchanger to exchange heat with the battery coolant that has completed partial cooling; because the temperature of the battery coolant is lower than the first time, the temperature impact on the air conditioning system is also higher than the first time. Second lowest.

S108. Turn on the solenoid valve and water pump at the same time for battery cooling control.

In the embodiment of this application, when the temperature of the battery coolant reaches a preset reasonable range, after the solenoid valve is opened at this time, the temperature impact on the air conditioning system is no longer obvious, the solenoid valve and the water pump can be opened at the same time, and the battery cooling is performed normally. control.

In the embodiment of the present application, the temperature impact on the passenger compartment air conditioning system when the battery is cooled is positively related to the amount of refrigerant diverted by the battery cooling circuit. The structure of the thermal expansion valve is to adjust the opening of the expansion valve by comparing the temperature difference between the battery coolant and the refrigerant, thereby controlling the flow of refrigerant entering the battery cooling circuit. The greater the temperature difference between the battery coolant and the refrigerant, the larger the expansion valve opening, and the more refrigerant entering the battery cooling circuit; conversely, the smaller the temperature difference between the battery coolant and the refrigerant, the smaller the expansion valve opening, and the more refrigerant entering the battery cooling circuit. The less refrigerant. According to the law of conservation of energy, in the heat exchanger, the heat absorbed by the refrigerant is equal to the heat released by the battery cooling water: Q = c·m·ΔT.

In the existing control method, when the battery is cooling, the solenoid valve and the water pump are opened at the same time, and the refrigerant and battery coolant are flowing. That is, the refrigerant of the air conditioning circuit needs to exchange heat with the battery coolant of the entire battery cooling circuit, so the equilibrium temperature is reached. The long time required results in a large amount of refrigerant being diverted, which has a large temperature impact on the air conditioning system.

In the embodiment of the present application, in the early stage of battery cooling, the solenoid valve and the water pump are opened and closed at different times. When the solenoid valve is opened and the refrigerant flows to the heat exchanger, the refrigerant in the air conditioning circuit only interacts with the battery cooling liquid in the heat exchanger. Heat exchange is performed, so the time required to reach the equilibrium temperature is short, less refrigerant is diverted, and the temperature impact on the air conditioning system is small. Then close the solenoid valve and open the water pump to allow the internal temperature of the battery coolant to be evened out, causing the overall temperature of the battery coolant to drop. Thus, each time the solenoid valve is opened, the temperature impact on the air conditioning system is gradually reduced. Moreover, since both the solenoid valve and the water pump need to undergo temperature balance during the time-sharing opening and closing process, the opening and closing frequency is not high and will not affect the NVH performance of the entire vehicle.

It can be seen that implementing the thermal management system control method described in this embodiment can reduce the temperature impact on the passenger compartment air conditioning system when the battery is cooling, and can also avoid high-frequency valve opening and closing noise, thereby ensuring the NVH performance of the entire vehicle.

Example 2

Please refer to FIG. 2 , which is a schematic structural diagram of a thermal management system control device provided by an embodiment of the present application. As shown in Figure 2, the thermal management system control device includes:

The opening unit 210 is used to control the water pump of the battery cooling circuit not to operate when it is detected that the battery of the electric vehicle needs to be cooled, and to open the solenoid valve of the thermal management system so that the refrigerant of the air conditioning system flows through the heat exchanger and the battery cooling circuit. The battery coolant in the battery is heat exchanged;

The closing unit 220 is used to close the solenoid valve after a preset first period of time to allow the refrigerant to completely flow through the air conditioning circuit;

The control unit 230 is used to control the water pump to start operating so that the battery cooling liquid in the heat exchanger flows in the battery cooling circuit to cool the battery cooling liquid;

The opening unit 210 is also used to open the solenoid valve and control the water pump to stop running after the preset second period of time; when the temperature of the battery coolant reaches a preset reasonable range, the solenoid valve and the water pump are simultaneously opened for battery cooling. control.

As an optional implementation, the thermal management system control device also includes:

The first judgment unit 240 is used to judge whether the temperature of the battery cooling liquid reaches a preset reasonable range; if so, the trigger opening unit 210 simultaneously turns on the solenoid valve and the water pump for battery cooling control; if not, the trigger closing unit 220 starts the preset After the first period of time, the solenoid valve is closed.

As an optional implementation, the thermal management system control device also includes:

The detection unit 250 is used to detect the battery temperature of the electric vehicle battery through the battery management system;

The second judgment unit 260 is used to judge whether the battery has cooling needs according to the battery temperature; if so, trigger the opening unit 210 to control the water pump of the battery cooling circuit not to operate and open the solenoid valve of the thermal management system.

As an optional implementation, the control unit 230 is also configured to control the water pump not to operate and close the solenoid valve when it is determined that the battery has no cooling requirement.

In the embodiment of the present application, for explanation of the thermal management system control device, reference may be made to the description in Embodiment 1, which will not be described again in this embodiment.

It can be seen that implementing the thermal management system control device described in this embodiment can reduce the temperature impact on the passenger compartment air conditioning system when the battery is cooling, and can also avoid high-frequency valve opening and closing noise, thereby ensuring the NVH performance of the entire vehicle.

An embodiment of the present application provides an electronic device, including a memory and a processor. The memory is used to store a computer program. The processor runs the computer program to cause the electronic device to execute the thermal management system control method in Embodiment 1 of the present application.

This embodiment of the present application provides a computer-readable storage medium that stores computer program instructions. When the computer program instructions are read and run by a processor, the thermal management system control method in Embodiment 1 of the present application is executed.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible implementation architecture, functions and functions of the devices, methods and computer program products according to multiple embodiments of the present application. operate. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more components for implementing the specified logical function(s). Executable instructions. 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 consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. It will also be noted that each block of the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or acts. , or can be implemented using a combination of specialized hardware and computer instructions.

In addition, each functional module in each embodiment of the present application can be integrated together to form an independent part, each module can exist alone, or two or more modules can be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .

The above descriptions are only examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application. It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes the stated element.

Claims (10)

1. A method of controlling a thermal management system, comprising:

when the battery of the electric automobile is detected to be required to be cooled, controlling a water pump of a battery cooling loop to be not operated, and starting an electromagnetic valve of the thermal management system so that a refrigerant of an air conditioning system flows through a heat exchanger to exchange heat with battery cooling liquid in the battery cooling loop;

after a first time period is preset, closing the electromagnetic valve to enable the refrigerant to completely flow through an air conditioning loop, and controlling the water pump to start to operate, so that battery cooling liquid in the heat exchanger flows in the battery cooling loop to cool the battery cooling liquid in the battery cooling loop;

after a second time period is preset, the electromagnetic valve is opened, and the water pump is controlled to stop running;

when the temperature of the battery cooling liquid in the battery cooling loop reaches a preset reasonable range, the electromagnetic valve and the water pump are simultaneously started to perform battery cooling control.

2. The thermal management system control method of claim 1, further comprising:

judging whether the temperature of battery cooling liquid in the battery cooling loop reaches a preset reasonable range or not;

if yes, executing the operation of simultaneously starting the electromagnetic valve and the water pump to perform battery cooling control;

if not, executing the step of closing the electromagnetic valve after the preset first time period.

3. The thermal management system control method of claim 1, further comprising:

detecting the battery temperature of the battery of the electric automobile through a battery management system;

judging whether the battery has a cooling requirement according to the battery temperature;

if yes, the water pump controlling the battery cooling loop is not operated, and the electromagnetic valve of the thermal management system is opened.

4. The thermal management system control method of claim 1, further comprising:

and when judging that the battery has no cooling requirement, controlling the water pump to be not operated, and closing the electromagnetic valve.

5. A thermal management system control apparatus, the thermal management system control apparatus comprising:

the starting unit is used for controlling the water pump of the battery cooling loop to be not operated when the battery of the electric automobile is detected to be required to be cooled, and starting the electromagnetic valve of the thermal management system so that the refrigerant of the air conditioning system flows through the heat exchanger to exchange heat with the battery cooling liquid in the battery cooling loop;

the closing unit is used for closing the electromagnetic valve after a preset first time period so that the refrigerant completely flows through the air conditioning loop;

a control unit for controlling the water pump to start to operate so that the battery cooling liquid in the heat exchanger flows in the battery cooling loop to cool the battery cooling liquid;

the opening unit is also used for opening the electromagnetic valve and controlling the water pump to stop running after a second time period is preset; when the temperature of the battery cooling liquid reaches a preset reasonable range, the electromagnetic valve and the water pump are simultaneously started to perform battery cooling control.

6. The thermal management system control device of claim 5, further comprising:

the first judging unit is used for judging whether the temperature of the battery cooling liquid reaches a preset reasonable range or not; if yes, triggering the opening unit to simultaneously open the electromagnetic valve and the water pump to perform battery cooling control; if not, triggering the closing unit to close the electromagnetic valve after the preset first time period.

7. The thermal management system control device of claim 5, further comprising:

the detection unit is used for detecting the battery temperature of the battery of the electric automobile through the battery management system;

a second judging unit for judging whether the battery has a cooling requirement according to the battery temperature; and if so, triggering the opening unit to control the water pump of the battery cooling loop to be not operated, and opening the electromagnetic valve of the thermal management system.

8. The thermal management system control of claim 5, wherein the control unit is further configured to control the water pump to be inactive and to close the solenoid valve when it is determined that the battery has no cooling demand.

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 thermal management system control method of any one of claims 1 to 4.

10. A readable storage medium having stored therein computer program instructions which, when read and executed by a processor, perform the thermal management system control method of any one of claims 1 to 4.