Thermal management method and related device for vehicle controller

Abstract

The embodiment of the present application discloses a thermal management method and related device for a vehicle controller, wherein the thermal management method for a vehicle controller includes: in response to a controller cooling instruction, obtaining the current heat generation of the controller and the current temperature of the controller; based on the current heat generation and the current temperature, obtaining the cumulative heat generation of the controller; based on the cumulative heat generation, obtaining refrigerant flow demand information; based on the refrigerant flow demand information, controlling the refrigerant flow for cooling the controller. The thermal management method for a vehicle controller provided by the embodiment of the present application can, on the one hand, ensure the stability of the operating temperature of the controller, improve the response efficiency of temperature regulation, suppress the over-adjustment oscillation of the controller temperature, and improve the temperature control effect of the controller; on the other hand, it can accurately control the refrigerant flow supplied to the controller, make full use of the heat dissipation effect of the refrigerant, avoid the waste of refrigerant, and help maintain the stable operating temperature of the whole vehicle.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle technology, and in particular, to a thermal management method for a vehicle controller, a computer-readable storage medium, a control device, and a vehicle. Background Art

[0002] With the development of vehicle intelligence, electrification, and networking, the integration of automotive-grade chips is getting higher and higher, and the computing power is getting higher and higher. The industry estimates that L2-level autonomous driving requires a computing power of about 10TOPS, L3 requires more than 100TOPS, and the computing power level of L3+ has risen to more than 1000TOPS. With the increase in computing power, the heat generation and power consumption of the controller will increase exponentially. At present, the cooling method of automotive controllers is more water-cooled, and integrated with the battery electric drive thermal management system, but the control method generally only has a simple switch logic based on temperature, the temperature control accuracy is low, and the temperature over-adjustment oscillation is obvious. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a thermal management method for a vehicle controller.

[0005] A second aspect of the present invention provides a computer-readable storage medium.

[0006] A third aspect of the present invention provides a control device.

[0007] A fourth aspect of the present invention provides a vehicle.

[0008] In view of this, according to a first aspect of an embodiment of the present application, a thermal management method for a vehicle controller is proposed, comprising:

[0009] In response to a controller cooling instruction, obtaining a current heat generation amount and a current temperature of the controller;

[0010] Based on the current heating value and the current temperature, obtaining the cumulative heating value of the controller;

[0011] Based on the accumulated heat value, obtaining refrigerant flow demand information;

[0012] Based on the refrigerant flow demand information, the refrigerant flow for cooling the controller is controlled.

[0013] In a feasible implementation manner, the thermal management method for a vehicle controller further includes:

[0014] The current temperature information of the controller is collected, and when the current temperature information exceeds a first threshold, a controller cooling instruction is generated.

[0015] In a feasible implementation manner, the current heating value of the controller is determined based on the heating power of the controller;

[0016] The heating power is determined based on the ambient temperature information and the load rate of the controller.

[0017] In a feasible implementation manner, the step of obtaining the cumulative heating value of the controller based on the current heating value and the current temperature includes:

[0018] Determining the thermal energy to be cooled of the controller based on the current temperature and the target temperature of the controller;

[0019] Based on the heat energy to be cooled and the current heating value, the accumulated heating value of the controller is determined.

[0020] In a feasible implementation manner, the step of obtaining refrigerant flow demand information based on the cumulative heating value includes:

[0021] The refrigerant flow demand information is determined based on the accumulated heating value, the current temperature of the controller, the target temperature and the specific heat capacity of the refrigerant.

[0022] In a feasible implementation manner, a control valve is provided on the refrigerant flow path for cooling the controller, and the control valve is used to control the flow rate of the refrigerant supplied to the controller. The step of controlling the flow rate of the refrigerant for cooling the controller based on the refrigerant flow demand information includes:

[0023] The opening degree of the control valve is determined based on the refrigerant flow demand information and the total amount of refrigerant in the refrigerant flow path.

[0024] According to a second aspect of an embodiment of the present application, a computer-readable storage medium is proposed, wherein the computer-readable storage medium stores a computer program for implementing a thermal management method for a vehicle controller as described in any of the above technical solutions.

[0025] According to a third aspect of an embodiment of the present application, a control device is provided, comprising:

[0026] a memory storing a computer program;

[0027] A processor, configured to execute the computer program;

[0028] Wherein, when the processor executes the computer program, it implements the thermal management method of the vehicle controller as described in any of the above technical solutions.

[0029] According to a fourth aspect of an embodiment of the present application, a vehicle is provided, comprising:

[0030] A control device as described in the above technical solution;

[0031] A cooling module and the controller, wherein the cooling module is connected to the controller and is used to cool the controller, and the control device is used to control the flow rate of refrigerant supplied by the cooling module to the controller.

[0032] In a feasible implementation manner, the vehicle further includes: a power battery, and the cooling module includes:

[0033] Refrigeration components;

[0034] a heat exchanger, the refrigeration assembly being connected to the heat exchanger;

[0035] a refrigerant flow path, the refrigerant flow path flowing through the refrigerant flow path, the controller and the power battery, the power battery being connected in parallel with the controller;

[0036] a control valve, disposed on the refrigerant flow path, for controlling the refrigerant supply amount to the power battery and the controller;

[0037] The temperature sensor is arranged on the refrigerant flow path.

[0038] Compared with the prior art, the present invention includes at least the following beneficial effects: the thermal management method for a vehicle controller provided in the embodiment of the present application, when receiving a cooling instruction of the controller, responds to the cooling instruction of the controller, and collects the current heat generation of the controller and the current temperature of the controller, and further obtains the cumulative heat generation of the controller based on the current heat generation of the controller and the current temperature of the controller. In this case, the cooling module is required to provide refrigerant to eliminate this part of the cumulative heat generation so that the controller can be maintained below the expected temperature, and further based on the cumulative heat generation, the refrigerant flow demand information can be clarified to obtain the flow of refrigerant that needs to be supplied to the controller. Based on this, precise control of the refrigerant supply can be achieved. On the one hand, the stability of the operating temperature of the controller can be ensured, the response efficiency of temperature regulation can be improved, the over-adjustment oscillation of the controller temperature can be suppressed, and the temperature control effect of the controller can be improved; on the other hand, the refrigerant flow supplied to the controller can be accurately controlled, the heat dissipation effect of the refrigerant is fully utilized, the waste of refrigerant is avoided, and it is beneficial to maintain the stable operating temperature of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0040] In the attached picture:

[0041] Figure 1 A schematic flowchart of a thermal management method for a vehicle controller according to an embodiment of the present application;

[0042] Figure 2 A structural block diagram of a computer-readable storage medium according to an embodiment of the present application;

[0043] Figure 3 A structural block diagram of a control device according to an embodiment of the present application;

[0044] Figure 4 A schematic structural diagram of a cooling module for a vehicle according to an embodiment of the present application.

[0045] in, Figure 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0046] 411 refrigeration component, 412 heat exchanger, 413 refrigerant flow path, 414 control valve, 415 temperature sensor, 416 pump body;

[0047] 420 controller, 430 power battery. DETAILED DESCRIPTION

[0048] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0049] like Figure 1 As shown, according to a first aspect of an embodiment of the present application, a thermal management method for a vehicle controller is proposed, comprising:

[0050] Step 101: In response to the controller cooling instruction, the current heat generation of the controller and the current temperature of the controller are obtained. It is understandable that the controller cooling instruction can be issued by the user autonomously, or it can be generated automatically by detecting the operating status of the controller through the vehicle-mounted sensor. It is understandable that the current heat generation of the controller represents the heat that needs to be generated when the controller is working under the current working conditions, and the current temperature of the controller can represent the difficulty of cooling the controller. The higher the current temperature of the controller, the more difficult it is to cool the controller. Conversely, the lower the current temperature of the controller, the easier it is to cool the controller.

[0051] Step 102: Based on the current heat output and the current temperature, the cumulative heat output of the controller is obtained. It can be understood that the cumulative heat output represents the amount of cooling required by the cooling module when the cooling module is used to dissipate heat for the controller. If the cooling amount is greater than or equal to the cumulative heat output, the controller can be maintained below the expected temperature, which is conducive to the safe operation of the controller. The cumulative heat output can be determined based on the current heat output and the current temperature. The cumulative heat output can be determined from two perspectives: the current operating state of the controller and the ease of cooling the controller, so that the determination of the cumulative heat output is more accurate.

[0052] Step 103: Based on the cumulative heating value, obtain the refrigerant flow demand information. It is understandable that after the cumulative heating value is determined, the required refrigerant supply amount can be equivalently obtained based on the cumulative heating value, and the refrigerant supply flow information can be further determined.

[0053] Step 104: Based on the refrigerant flow demand information, control the refrigerant flow for cooling the controller. It is understandable that after the refrigerant flow demand information is clear, the cooling module of the vehicle can be controlled to supply refrigerant according to the refrigerant flow demand information, based on which accurate cooling of the controller can be achieved.

[0054] The thermal management method for a vehicle controller provided in an embodiment of the present application responds to the cooling instruction of the controller when receiving a cooling instruction of the controller, and collects the current heat generation of the controller and the current temperature of the controller, and further obtains the cumulative heat generation of the controller based on the current heat generation of the controller and the current temperature of the controller. In this case, the cooling module is required to provide refrigerant to eliminate this part of the cumulative heat generation so that the controller can be maintained below the expected temperature. The refrigerant flow demand information can be further clarified based on the cumulative heat generation to obtain the flow of refrigerant that needs to be supplied to the controller. Based on this, precise control of the refrigerant supply can be achieved. On the one hand, the stability of the operating temperature of the controller can be ensured, the response efficiency of temperature regulation can be improved, the temperature over-regulation oscillation of the controller can be suppressed, and the temperature control effect of the controller can be improved; on the other hand, the refrigerant flow supplied to the controller can be accurately controlled to make full use of the heat dissipation effect of the refrigerant, avoid the waste of refrigerant, and help maintain the stable operating temperature of the entire vehicle.

[0055] In a feasible implementation manner, the thermal management method for a vehicle controller further includes: collecting current temperature information of the controller, and generating a controller cooling instruction when the current temperature information exceeds a first threshold.

[0056] In this technical solution, a method for generating a controller cooling instruction is further provided, which can collect the current temperature of the controller. If the current temperature information exceeds the first threshold, it means that the current temperature of the controller is high. In this case, the temperature needs to be lowered, so a controller cooling instruction can be generated.

[0057] It can be understood that the first threshold can be determined based on the performance of the controller, and the value range of the first threshold is limited to 60°C to 80°C. Based on this, the thermal management method provided in the embodiment of the present application can control the temperature of the controller below the first threshold, thereby ensuring the safe operation of the controller.

[0058] In a feasible implementation manner, the current heating value of the controller is determined based on the heating power of the controller; wherein the heating power is determined based on the ambient temperature information and the load rate of the controller.

[0059] In this technical solution, a method for obtaining the current heat generation of the controller is further provided. The current heat generation is determined based on the heat generation power, which can make the determination of the current heat generation more accurate. Furthermore, the heat generation power is determined based on the ambient temperature information and the load rate of the controller, which can make the determination of the heat generation power of the controller more accurate. It can more accurately characterize the heat that needs to be generated when the controller is working under the current working conditions, thereby making the determination of the subsequent refrigerant flow more accurate.

[0060] In some examples, the heat generation power can be calculated as follows:

[0061] H=k i η×TDP

[0062] Among them, H is the heating power of the controller; K i is the environmental correction factor; η is the current load rate of the controller; TDP is the thermal design power consumption, which is determined by the specifications of the controller and is given by the controller factory or measured on a bench.

[0063] In some examples, the current heat generation can be calculated using the following formula:

[0064] Q cp =∫Hdt

[0065] Among them, Q cp is the current heat generated by the controller; H is the heating power of the controller.

[0066] In a feasible implementation, based on the current heating value and the current temperature, the step of obtaining the cumulative heating value of the controller includes: determining the thermal energy to be cooled of the controller based on the current temperature and the target temperature of the controller; determining the cumulative heating value of the controller based on the thermal energy to be cooled and the current heating value; wherein the thermal energy to be cooled is determined based on the current temperature, the target temperature and the thermal capacity of the controller.

[0067] In this technical solution, specific steps for determining the cumulative heat generation are further provided. After obtaining the current temperature of the controller, the target temperature to be cooled by the controller can be further obtained. It can be understood that the value of the target temperature is less than or equal to the first threshold value, and then the heat to be cooled can be obtained based on the current temperature and the target temperature. The cumulative heat generation can be obtained by accumulating the heat to be cooled and the current heat generation. Such a setting facilitates the acquisition of the cumulative heat generation, and can determine the cumulative heat generation from two perspectives: the current operating state of the controller and the difficulty of cooling the controller, so that the determination of the cumulative heat generation is more accurate.

[0068] In some examples, the heat energy to be cooled can be obtained by the following formula:

[0069] Q cs =C c ×(T c′ -T tgt )

[0070] Among them, Q cs To obtain the heat energy for cooling; C c is the thermal capacity of the controller; T c’ is the current temperature; T tgt : Target temperature.

[0071] In some examples, the cumulative heat generation can be obtained by the following formula:

[0072] Q c =Q cs +Q cp

[0073] Among them, Q c The accumulated heat generated by the controller; Q cs To obtain the heat energy to be cooled; Q cp It is the current heat generation of the controller.

[0074] In a feasible implementation, the step of obtaining refrigerant flow demand information based on the accumulated heating value includes: determining the refrigerant flow demand information based on the accumulated heating value, the current temperature of the controller, the target temperature and the specific heat capacity of the refrigerant.

[0075] In this technical solution, the method for determining the refrigerant flow demand information is further clarified. With the accumulated heat value, the current temperature of the controller, the target temperature and the specific heat capacity of the refrigerant as parameters, the minimum requirement for refrigerant flow when the controller can perform effective cooling can be accurately calculated, which facilitates the accurate determination of the refrigerant flow demand information.

[0076] In some examples, the refrigerant flow demand information can be obtained by the following formula:

[0077] Q c =Q req =∫V req c w ×(T C -T W )dt

[0078] Among them, Q c is the accumulated heat generated by the controller; V req is the refrigerant flow demand; c w is the specific heat capacity of the refrigerant; T c : Current temperature; T w : Target temperature.

[0079] In some examples, the coolant may be water.

[0080] In a feasible embodiment, a control valve is provided on the refrigerant flow path for cooling the controller, and the control valve is used to control the flow rate of the refrigerant supplied to the controller. Based on the refrigerant flow demand information, the step of controlling the refrigerant flow rate for cooling the controller includes: determining the opening of the control valve based on the refrigerant flow demand information and the total amount of refrigerant in the refrigerant flow path.

[0081] In this technical scheme, specific steps for controlling the refrigerant flow for cooling the controller are further provided. In this technical scheme, a control valve is provided on the refrigerant flow for cooling the module for the controller. The control valve can control the supply of the refrigerant. After the refrigerant flow demand information is clarified, the opening of the control valve can be determined in combination with the total amount of refrigerant in the refrigerant flow. The control valve can be further controlled to maintain the opening, so that the refrigerant can be supplied as expected. Based on this, the supply of the refrigerant can be adjusted by controlling the opening of the control valve, which facilitates the implementation of the control scheme.

[0082] In some examples, the opening of the control valve can be obtained by the following formula:

[0083] V req =Q total ×K P

[0084] Among them, V req is the refrigerant flow demand; Q total is the total amount of refrigerant; K P is the opening of the control valve.

[0085] like Figure 2 As shown, according to the second aspect of an embodiment of the present application, a computer-readable storage medium is proposed, and the computer-readable storage medium stores a computer program to implement a thermal management method for a vehicle controller as in any of the above technical solutions.

[0086] The computer-readable storage medium provided in the embodiments of the present application implements the thermal management method for a vehicle controller of any of the above-mentioned technical solutions, and therefore has all the beneficial effects of the thermal management method of the above-mentioned technical solutions.

[0087] The computer-readable storage medium provided in the embodiment of the present application responds to the cooling instruction of the controller when receiving the cooling instruction of the controller, and collects the current heat generation of the controller and the current temperature of the controller, and further obtains the cumulative heat generation of the controller based on the current heat generation of the controller and the current temperature of the controller. In this case, the cooling module is required to provide refrigerant to eliminate this part of the cumulative heat generation so that the controller can be maintained below the expected temperature. The refrigerant flow demand information can be further clarified based on the cumulative heat generation to obtain the flow of refrigerant that needs to be supplied to the controller. Based on this, precise control of the refrigerant supply can be achieved. On the one hand, the stability of the operating temperature of the controller can be guaranteed, the response efficiency of temperature regulation can be improved, the over-adjustment oscillation of the controller temperature can be suppressed, and the temperature control effect of the controller can be improved; on the other hand, the refrigerant flow supplied to the controller can be accurately controlled to make full use of the heat dissipation effect of the refrigerant, avoid the waste of refrigerant, and help maintain the stable operating temperature of the whole vehicle.

[0088] It is understandable that the controller cooling instruction can be issued by the user, or it can be generated automatically by detecting the operating status of the controller through the vehicle-mounted sensor. It is understandable that the current heat generation of the controller represents the heat that needs to be generated when the controller works under the current working conditions, and the current temperature of the controller represents the difficulty of cooling the controller. The higher the current temperature of the controller, the more difficult it is to cool the controller. Conversely, the lower the current temperature of the controller, the easier it is to cool the controller.

[0089] It can be understood that the cumulative heat value represents the amount of cooling that needs to be provided by the cooling module when the cooling module is used to dissipate heat for the controller. When the cooling amount is greater than or equal to the cumulative heat value, the controller can be maintained below the expected temperature, which is conducive to the safe operation of the controller. The cumulative heat value can be determined based on the current heat value and the current temperature. The cumulative heat value can be determined from two perspectives: the current operating state of the controller and the difficulty of cooling the controller, making the determination of the cumulative heat value more accurate.

[0090] It can be understood that after the cumulative heating value is determined, the required refrigerant supply amount can be equivalently obtained based on the cumulative heating value, and the flow information of the refrigerant supply can be further determined.

[0091] It can be understood that after the refrigerant flow demand information is clarified, the cooling module of the vehicle can be controlled to supply refrigerant according to the refrigerant flow demand information, based on which precise cooling of the controller can be achieved.

[0092] like Figure 3 As shown, according to the third aspect of an embodiment of the present application, a control device is proposed, comprising: a memory storing a computer program; a processor executing the computer program; wherein, when the processor executes the computer program, it implements a thermal management method for a vehicle controller as in any of the above-mentioned technical solutions.

[0093] The control device provided in the embodiment of the present application implements the thermal management method of the vehicle controller as any of the above-mentioned technical solutions, so the control device has all the beneficial effects of the thermal management method of the above-mentioned technical solutions, which will not be elaborated here.

[0094] like Figure 4 As shown, according to the fourth aspect of an embodiment of the present application, a vehicle is proposed, comprising: a control device as in the above technical solution; a cooling module and a controller 420, the cooling module is connected to the controller 420, and is used to cool the controller 420, and the control device is used to control the flow rate of refrigerant supplied by the cooling module to the controller 420.

[0095] The vehicle provided in the embodiment of the present application, through the settings of the control device, the cooling module and the controller 420, responds to the cooling instruction of the controller 420 when receiving the cooling instruction of the controller 420, and collects the current heat generation of the controller 420 and the current temperature of the controller 420, and further obtains the cumulative heat generation of the controller 420 based on the current heat generation of the controller 420 and the current temperature of the controller 420. In this case, the cooling module is required to provide refrigerant to eliminate this part of the cumulative heat generation so that the controller 420 can be maintained below the expected temperature. Further based on the cumulative heat generation, the refrigerant flow demand information can be clarified to obtain the flow of the refrigerant that needs to be supplied to the controller 420. Based on this, the precise control of the refrigerant supply of the cooling module can be achieved. On the one hand, the stability of the operating temperature of the controller 420 can be ensured, the response efficiency of the temperature regulation can be improved, the over-adjustment oscillation of the temperature of the controller 420 can be suppressed, and the temperature control effect of the controller 420 can be improved; on the other hand, the refrigerant flow supplied to the controller 420 can be accurately controlled, the heat dissipation effect of the refrigerant is fully utilized, the waste of refrigerant is avoided, and it is beneficial to maintain the stable operating temperature of the whole vehicle.

[0096] In a feasible embodiment, the vehicle also includes: a power battery 430, the cooling module includes: a refrigeration component 411; a heat exchanger 412, the refrigeration component 411 is connected to the heat exchanger 412; a refrigerant flow path 413, the refrigerant flow path 413 flows through the refrigerant flow path 413, the controller 420 and the power battery 430, and the power battery 430 is connected in parallel with the controller 420; a control valve 414, which is arranged on the refrigerant flow path 413, and is used to control the refrigerant supply amount to the power battery 430 and the controller 420; a temperature sensor 415, which is arranged on the refrigerant flow path 413.

[0097] In this technical solution, the structural composition of the cooling module is further provided. The cooling module may include a refrigeration component 411, a heat exchanger 412, a refrigerant flow path 413 and a control valve 414. During operation, the refrigerant does not circulate in the refrigerant pipeline. The refrigeration component 411 exchanges heat with the refrigerant in the refrigerant flow path 413 through the heat exchanger 412 to take away the heat of the refrigerant. The low-temperature refrigerant can flow through the controller 420 and the power battery 430 through the refrigerant flow path 413. Based on this, it is helpful to simplify the structure of the cooling module, and the cooling module can be used to simultaneously provide heat for the power battery 430 and the control valve 414. Cooling the controller 420 can improve the utilization efficiency of the refrigerant, and by combining the control valve 414 with the control device provided in the embodiment of the present application, the opening of the control valve 414 can be accurately controlled. On the one hand, the stability of the operating temperature of the controller 420 can be ensured, the response efficiency of the temperature regulation can be improved, the over-adjustment oscillation of the temperature of the controller 420 can be suppressed, and the temperature control effect of the controller 420 can be improved; on the other hand, the refrigerant flow supplied to the controller 420 can be accurately controlled, and the heat dissipation effect of the refrigerant can be fully utilized, thereby avoiding the waste of the refrigerant and maintaining the stable operating temperature of the whole vehicle.

[0098] In some examples, a pump body 416 may be provided on the refrigerant flow path 413 to drive the circulation of the refrigerant, and the pump body 416 may be a centrifugal pump, and the heat exchanger 412 may be a plate heat exchanger 412 to improve the heat exchange efficiency.

[0099] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0100] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0101] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0102] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0103] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0104] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device is caused to execute the following Figure 1 The process in the application protection method in the corresponding embodiment.

[0105] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a server, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0107] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0108] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0109] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0110] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it 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 prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0111] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal management method for a vehicle controller, characterized in that: include: In response to a controller cooling instruction, obtaining a current heat generation amount and a current temperature of the controller; Based on the current heating value and the current temperature, obtaining the cumulative heating value of the controller; Based on the accumulated heat value, obtaining refrigerant flow demand information; Based on the refrigerant flow demand information, controlling the refrigerant flow for cooling the controller; The current heating value of the controller is determined based on the heating power of the controller; Wherein, the heating power is determined based on the ambient temperature information and the load rate of the controller; The step of obtaining the accumulated heating value of the controller based on the current heating value and the current temperature comprises: Determining the thermal energy to be cooled of the controller based on the current temperature of the controller, the target temperature and the thermal capacity of the controller; Determining the accumulated heat value of the controller based on the heat energy to be cooled and the current heat value; The heating power is calculated by the following formula: H=k i η×TDP Among them, H is the heating power of the controller; K i is the environmental correction factor; η is the current load rate of the controller; TDP is the thermal design power consumption, which is determined by the specifications of the controller and is given by the controller factory or measured on a bench; The current heat value is calculated by the following formula: Q cp =∫Hdt Among them, Q cp is the current heat generated by the controller; H is the heating power of the controller; The heat energy to be cooled is obtained by the following formula: Q cs =C c ×(T c′ -T tgt ) Among them, Q cs To obtain the heat energy to be cooled; C c is the thermal capacity of the controller; T c′ is the current temperature; T tgt : target temperature; The cumulative heat output is calculated using the following formula: Q c =Q cs +Q cp Among them, Q c The accumulated heat generated by the controller; Q cs To obtain the heat energy to be cooled; Q cp is the current heat generation of the controller; The refrigerant flow demand information is obtained through the following formula: Q c =Q req =∫V req c w ×(T C -T W )dt Among them, Q c is the cumulative heat generated by the controller; V req is the refrigerant flow demand; c w is the specific heat capacity of the refrigerant; T c : Current temperature; T w : Target temperature.

2. The thermal management method of a vehicle controller according to claim 1, characterized in that: Also includes: The current temperature information of the controller is collected, and when the current temperature information exceeds a first threshold, a controller cooling instruction is generated.

3. The thermal management method of a vehicle controller according to claim 1, characterized in that: The step of obtaining refrigerant flow demand information based on the cumulative heating value includes: The refrigerant flow demand information is determined based on the accumulated heating value, the current temperature of the controller, the target temperature and the specific heat capacity of the refrigerant.

4. The thermal management method of a vehicle controller according to claim 1, characterized in that: A control valve is provided on a refrigerant flow path for cooling the controller, and the control valve is used to control the refrigerant flow supplied to the controller. The step of controlling the refrigerant flow for cooling the controller based on the refrigerant flow demand information includes: The opening degree of the control valve is determined based on the refrigerant flow demand information and the total amount of refrigerant in the refrigerant flow path.

5. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for implementing the thermal management method for a vehicle controller according to any one of claims 1 to 4.

6. A control device, characterized in that: include: a memory storing a computer program; A processor, configured to execute the computer program; Wherein, when the processor executes the computer program, it implements the thermal management method for a vehicle controller as described in any one of claims 1 to 4.

7. A vehicle, characterized in that: include: The control device as claimed in claim 6; A cooling module and the controller, wherein the cooling module is connected to the controller and is used to cool the controller, and the control device is used to control the flow rate of refrigerant supplied by the cooling module to the controller.

8. The vehicle according to claim 7, characterized in that Also includes: Power battery, the cooling module comprises: Refrigeration components; a heat exchanger, the refrigeration assembly being connected to the heat exchanger; a refrigerant flow path, the refrigerant flow path flowing through the refrigerant flow path, the controller and the power battery, the power battery being connected in parallel with the controller; a control valve, disposed on the refrigerant flow path, for controlling the refrigerant supply amount to the power battery and the controller; The temperature sensor is arranged on the refrigerant flow path.

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