An electric compressor control method, device and vehicle

Abstract

This invention provides an electric compressor control method, device, and vehicle. The method is applied to a vehicle controller, and the vehicle further includes an air conditioning system, a power battery, and a battery cooling circuit connected to the power battery. The air conditioning system includes an electric compressor. The method includes: acquiring the actual temperature of the coolant flowing into the power battery from the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery; and adjusting the rotational speed of the electric compressor based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information to control the cooling capacity provided by the electric compressor to the battery cooling circuit. This invention effectively solves the problem that existing electric compressor control methods cannot effectively meet the thermal management requirements of power batteries.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an electric compressor control method, device, and vehicle. Background Technology

[0002] Currently, electric vehicles, including pure electric vehicles and hybrid vehicles, are developing rapidly.

[0003] Because batteries in electric vehicles can only operate efficiently within a suitable temperature range, they frequently require cooling. Current battery cooling cycles typically utilize the refrigerant from the air conditioning system to cool the battery. Since the cooling capacity of the air conditioning system is achieved by its electric compressor, controlling the speed of the electric compressor in electric vehicles is particularly important.

[0004] However, the existing control methods for electric compressors cannot effectively meet the thermal management requirements of power batteries and are prone to causing large fluctuations in compressor speed. Summary of the Invention

[0005] In view of this, the present invention aims to provide an electric compressor control method, device and vehicle to solve the problem that the existing electric compressor control methods cannot effectively meet the thermal management requirements of power batteries.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] An electric compressor control method is applied to a vehicle controller, wherein the vehicle further includes an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, and the air conditioning system includes an electric compressor;

[0008] The method includes:

[0009] The actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery are obtained.

[0010] The rotational speed of the electric compressor is adjusted based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information.

[0011] Optionally, in the electric compressor control method, the step of adjusting the speed of the electric compressor based on the actual temperature, the target temperature, the temperature control requirement information, and the usage status information includes:

[0012] When the temperature control requirement information includes a first cooling signal, the upper limit value of the proportional-integral closed-loop regulation control is determined based on the usage status information.

[0013] The rotational speed of the electric compressor is controlled by proportional-integral closed-loop regulation based on the actual temperature, the target temperature, and the upper limit of the proportional-integral closed-loop regulation control.

[0014] Optionally, in the electric compressor control method for the engine, the step of performing proportional-integral closed-loop regulation control on the speed of the electric compressor based on the actual temperature, the target temperature, and the upper limit value of the proportional-integral closed-loop regulation control includes:

[0015] The temperature difference is determined based on the actual temperature and the target temperature.

[0016] Based on the temperature difference and the upper limit of the proportional-integral closed-loop control, the target speed is determined using the proportional-integral closed-loop control algorithm.

[0017] Adjust the speed of the electric compressor to the target speed.

[0018] Optionally, in the electric compressor control method for the engine, the step of determining the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information includes:

[0019] When the usage status information includes charging status information, the upper limit value of the proportional-integral closed-loop regulation control is determined to be a first limit value;

[0020] If the usage status information does not include charging status information, the upper limit value of the proportional-integral closed-loop regulation control is determined to be a second limit value, which is greater than the first limit value.

[0021] Optionally, in the electric compressor control method for the engine, the method further includes:

[0022] When the temperature control requirement information includes a second cooling signal, the electric compressor is controlled to rotate according to the upper limit of the electric compressor's rotation speed.

[0023] Another object of the present invention is to provide an electric compressor control device, wherein it is applied to a vehicle controller, the vehicle further comprising an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, the air conditioning system comprising an electric compressor;

[0024] The device includes:

[0025] The acquisition module is used to acquire the actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery.

[0026] The control module is used to adjust the speed of the electric compressor based on the actual temperature, the target temperature, the temperature control requirement information, and the usage status information.

[0027] Optionally, in the electric compressor control device, the control module includes:

[0028] The determining unit is configured to determine the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information when the temperature control demand information includes a first cooling signal.

[0029] The first control unit is used to perform proportional-integral closed-loop regulation control on the speed of the electric compressor based on the actual temperature, the target temperature, and the upper limit value of the proportional-integral closed-loop regulation control.

[0030] Optionally, in the electric compressor control device, the first control unit includes:

[0031] The first determining subunit is used to determine the temperature difference based on the actual temperature and the target temperature;

[0032] The second determining subunit is used to determine the target speed based on the temperature difference and the upper limit of the proportional-integral closed-loop control, using a proportional-integral closed-loop control algorithm.

[0033] A control subunit is used to adjust the speed of the electric compressor to the target speed.

[0034] Optionally, in the electric compressor control device, the determining unit includes:

[0035] The third determining subunit is used to determine the upper limit value of the proportional-integral closed-loop regulation control as a first limit value when the usage status information includes charging status information.

[0036] The fourth determining subunit is used to determine, when the usage status information does not include charging status information, the upper limit value of the proportional-integral closed-loop regulation control is a second limit value, wherein the second limit value is greater than the first limit value.

[0037] Optionally, in the electric compressor control device, the control module further includes:

[0038] The second control unit is used to control the electric compressor to rotate according to the upper limit of the electric compressor's rotation speed when the temperature control demand information includes a second cooling signal.

[0039] Compared with prior art, the electric compressor control method and apparatus of the present invention have the following advantages:

[0040] The system acquires the actual temperature of the coolant flowing into the power battery, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery. Based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information, the speed of the electric compressor is adjusted. Because the actual and target temperatures of the coolant flowing into the battery, the temperature control requirements of the power battery, and the usage status information are integrated, the speed of the electric compressor is dynamically adjusted. This allows for precise control of the cooling capacity provided by the electric compressor to the battery cooling circuit according to the power battery's own thermal management needs, thereby effectively controlling the internal temperature of the power battery, ensuring that the battery operates at a suitable temperature, and extending the battery's lifespan.

[0041] Another object of the present invention is to provide a storage medium storing a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executed as described above for the torque filtering control method of an engine.

[0042] Another object of the present invention is to provide an electronic device comprising:

[0043] Processor, adapted to implement various instructions; and

[0044] A storage medium suitable for storing multiple instructions, which are suitable for being loaded by a processor and executed as described above in the electric compressor control method.

[0045] Another object of the present invention is to provide a vehicle including a vehicle controller, the vehicle further including an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, the air conditioning system including an electric compressor, wherein the vehicle includes the electric compressor control device as described above.

[0046] The storage medium, electronic device, and vehicle described above have the same advantages over the prior art as the electric compressor control method and device described above, and will not be repeated here. Attached Figure Description

[0047] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0048] Figure 1 This is a schematic diagram of the electric compressor control method provided in an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of the control logic for an electric compressor provided in an embodiment of the present invention;

[0050] Figure 3This is a schematic diagram of the electric compressor control device proposed in an embodiment of the present invention. Detailed Implementation

[0051] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0053] Please see Figure 1 The diagram shows a schematic flow chart of an electric compressor control method provided by an embodiment of the present invention, which is applied to the vehicle controller of a vehicle. The vehicle also includes an air conditioning system, a power battery and a battery cooling circuit connected to the power battery. The air conditioning system includes an electric compressor. The method includes steps S100 to S200.

[0054] The control method provided in this invention is specifically applied to a vehicle controller, which is electrically connected to the vehicle's air conditioning system, power battery, and cooling circuit. The battery cooling circuit is connected to the power battery pipeline and is used to cool the power battery using coolant in the cooling circuit, which can be coolant water. The vehicle can be a battery electric vehicle or a hybrid electric vehicle.

[0055] Step S100: Obtain the actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery.

[0056] In step S100 above, the actual temperature is the temperature of the coolant entering the power battery in the cooling circuit, i.e., the actual inlet water temperature. This actual temperature can be obtained by directly monitoring the temperature of the coolant at the power battery inlet using a temperature sensor. This temperature is regulated by the cooling capacity provided by the compressor to the battery cooling circuit. The target temperature is the required temperature for the coolant to cool the power battery. This temperature can be preset according to cooling needs, for example, 20°C. The temperature control requirement information refers to the strength of the power battery's temperature control requirement, which is determined by the current temperature of the power battery. Specifically, the temperature control requirement information can be obtained through the battery management system. Because the temperature change trend of the power battery is different under different usage conditions, it is necessary to obtain the power battery's usage status information. This usage status information includes whether the power battery is in a discharging state or a charging state.

[0057] Step S200: Adjust the speed of the electric compressor according to the actual temperature, the target temperature, the temperature control requirement information and the usage status information, so as to control the cooling capacity provided by the electric compressor to the battery cooling circuit.

[0058] In step S200 above, since the actual temperature reflects the actual temperature of the coolant entering the power battery, the target temperature reflects the target temperature state of the coolant entering the power battery, the temperature control demand information reflects the strength of the actual temperature control demand of the power battery, and the usage status information reflects the temperature change trend of the power battery, the cooling capacity that the electric compressor needs to provide to the battery cooling circuit can be determined based on the above information, and then the speed of the electric compressor can be adjusted according to the cooling capacity so that the refrigerant sent into the coolant circuit can meet the thermal management requirements of the power battery.

[0059] Compared with existing technologies, the electric compressor control method of the present invention has the following advantages:

[0060] The system acquires the actual temperature of the coolant flowing into the power battery, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery. Based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information, the speed of the electric compressor is adjusted. Because the actual and target temperatures of the coolant flowing into the battery, the temperature control requirements of the power battery, and the usage status information are integrated, the speed of the electric compressor is dynamically adjusted. This allows for precise control of the cooling capacity provided by the electric compressor to the battery cooling circuit according to the power battery's own thermal management needs, thereby effectively controlling the internal temperature of the power battery, ensuring that the battery operates at a suitable temperature, and extending the battery's lifespan.

[0061] Optionally, in one embodiment, step S200 includes steps S201 to S202.

[0062] Step S201: If the temperature control demand information includes a first cooling signal, determine the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information.

[0063] In step S201 above, the first cooling signal is a signal that determines that the power battery needs to be cooled down, but does not need to be cooled down in full power mode; the upper limit value of the proportional integral closed-loop regulation control is the upper limit value of the electric compressor speed when the speed of the electric compressor is controlled by the proportional integral closed-loop regulation method.

[0064] In step S201 above, since the temperature control demand information includes the first cooling signal, it indicates that the power battery needs to be cooled down, but it is not necessary to cool down the power battery in the maximum cooling mode. At this time, the strength of the cooling demand is determined by the usage status of the power battery. Therefore, the upper limit of the speed when the speed of the electric compressor is adjusted by proportional integral closed loop can be determined according to the above usage status information.

[0065] Step S202: Based on the actual temperature, the target temperature, and the upper limit value of the proportional-integral closed-loop regulation control, perform proportional-integral closed-loop regulation control on the speed of the electric compressor.

[0066] In step S202 above, that is, within the speed range limited by the upper limit of the proportional-integral closed-loop regulation control, the speed of the electric compressor is adjusted and controlled by proportional-integral closed-loop regulation based on the actual temperature and the target temperature to avoid large fluctuations in the speed of the electric compressor, thereby effectively protecting the electric compressor.

[0067] In the above embodiments, the upper limit of proportional-integral closed-loop regulation control is determined by the temperature control requirements and usage status information of the power battery. Then, within the upper limit of proportional-integral closed-loop regulation control, the speed of the electric compressor is adjusted by proportional-integral closed-loop regulation control based on the actual temperature and the target temperature, so that the speed regulation of the electric compressor can meet the temperature control requirements and usage status of the power battery.

[0068] Optionally, in one specific embodiment, the step of determining the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information includes steps S211 to S212.

[0069] Step S211: If the usage status information includes charging status information, determine the upper limit value of the proportional-integral closed-loop regulation control to be a first limit value;

[0070] Step S212: If the usage status information does not include charging status information, determine that the upper limit of the proportional-integral closed-loop regulation control is a second limit, which is greater than the first limit.

[0071] In step S211 above, if the temperature control requirement information includes the first cooling signal, it indicates that the power battery needs to be cooled down, and it is not necessary to cool down the power battery in full power mode. If the usage status information includes charging status information at this time, it indicates that the power battery is currently in the charging state. At this time, the power battery is in the heating state and is more sensitive to the temperature change of the coolant. Therefore, it is necessary to set a small proportional integral closed-loop regulation control upper limit value for the electric compressor, which is the first limit value mentioned above.

[0072] In step S212 above, if the temperature control requirement information includes the first cooling signal, it indicates that the power battery needs to be cooled down, and it is not necessary to cool down the power battery in full power mode. If the usage status information does not include the charging status information at this time, it indicates that the power battery is not currently in a charging state. At this time, the power battery generates less heat and is relatively insensitive to the temperature change of the coolant. Therefore, a larger proportional integral closed-loop regulation control upper limit value can be set for the electric compressor, which is the second limit value mentioned above.

[0073] For example, if the first limit is set to 13.75, the second limit can be set to 25.

[0074] In the above specific implementation, when the power battery needs to be cooled down, but it is not necessary to cool down the power battery in full power mode, different proportional integral closed-loop regulation control upper limits are set according to whether the power battery is in a charging state, so as to accurately control the rotation of the electric compressor to meet the temperature control requirements of the power battery.

[0075] Optionally, in one specific embodiment, step S202 includes steps S221 to S223.

[0076] Step S221: Determine the temperature difference based on the actual temperature and the target temperature.

[0077] In step S221 above, the actual temperature is subtracted from the target temperature to obtain the temperature difference.

[0078] Step S222: Based on the temperature difference and the upper limit of the proportional-integral closed-loop control, determine the target speed using the proportional-integral closed-loop control algorithm.

[0079] In step S222 above, since the temperature difference reflects how close the current temperature state of the coolant entering the power battery is to the target temperature state, and the upper limit value of the proportional-integral closed-loop regulation control determines the upper limit value of the speed when the electric compressor is subjected to proportional-integral closed-loop regulation, the target speed can be calculated by using the temperature difference, the upper limit value of the proportional-integral closed-loop regulation control, and the proportional-integral closed-loop regulation control parameters.

[0080] In practical applications, the above step S222 can be implemented by a proportional-integral controller. Specifically, the proportional-integral controller calculates the target speed by combining the temperature difference, the upper limit of the proportional-integral closed-loop regulation control, the preset proportional increment, the preset integral increment, and the lower limit of the electric compressor speed.

[0081] Step S223: Adjust the speed of the electric compressor to the target speed.

[0082] In step S223 above, the speed of the electric compressor is adjusted based on the target speed calculated in step S222 until it is adjusted to the target speed.

[0083] Optionally, the speed of the electric compressor can be adjusted from the current speed to the target speed using a proportional-integral-calculus closed-loop control method.

[0084] Optionally, in one specific embodiment, step S200 above further includes step S203.

[0085] Step S203: If the temperature control demand information includes a second cooling signal, control the electric compressor to rotate according to the upper limit of the electric compressor's rotation speed.

[0086] In step S203 above, the second cooling signal is a signal that determines that the power battery needs to be cooled and cooled, and that the power battery needs to be cooled and cooled in full power mode. Since the temperature control requirement information includes the second cooling signal, it means that the power battery needs to be cooled and cooled, and that the power battery needs to be cooled and cooled in full power mode. Therefore, the electric compressor is directly controlled to rotate at its upper speed limit, so as to quickly meet the cooling needs of the power battery.

[0087] Please see Figure 2 The diagram shows the control logic of the electric compressor provided in the embodiments of this application.

[0088] like Figure 2 As shown, the battery status signal is first input into the air conditioner (Air Cool Chiller, ACC) state machine; then, through the calculation within the state machine, the ACC status signal is output as the signal to activate the proportional-integral (PI) closed-loop control.

[0089] Simultaneously, the charging signal confirms whether the vehicle is in a charging state, and then outputs different PI control limits. The lower limit of the PI control is the set value; the upper limit of the PI control is determined by the vehicle state. If the power battery is in a charging state and needs to be cooled, and needs to be cooled in the maximum cooling mode, a smaller upper limit value is output. If the power battery is not in a charging state and needs to be cooled, but does not need to be cooled in the maximum cooling mode, a larger upper limit value is output to ensure the battery cooling effect.

[0090] Then, based on the ACC status signal, charging status information, and PI control parameters, the difference between the actual inlet water temperature and the target inlet water temperature of the power battery is subjected to PI control. The output of the electric compressor speed requirement value after PI control is used as the target speed value to control the electric compressor speed.

[0091] The power battery needs to be cooled, and it needs to be cooled in the maximum cooling mode. Therefore, the electric compressor is directly controlled to rotate at the maximum speed.

[0092] Another object of the present invention is to provide an electric compressor control device, wherein, please refer to Figure 3 The diagram shows a schematic of an electric compressor control device proposed in an embodiment of the present invention, which is applied to a vehicle controller. The vehicle also includes an air conditioning system, a power battery and a battery cooling circuit connected to the power battery. The air conditioning system includes an electric compressor.

[0093] The device includes:

[0094] The acquisition module 31 is used to acquire the actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery.

[0095] The control module 32 is used to adjust the speed of the electric compressor according to the actual temperature, the target temperature, the temperature control requirement information and the usage status information.

[0096] In the device described in this embodiment of the invention, the acquisition module 31 acquires the actual temperature of the coolant flowing into the power battery, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery; then, the control module 32 adjusts the speed of the electric compressor based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information. Because the actual and target temperatures of the coolant flowing into the battery, the temperature control requirements of the power battery, and the usage status information are integrated, the speed of the electric compressor is dynamically adjusted. This allows for precise control of the cooling capacity provided by the electric compressor to the battery cooling circuit according to the power battery's own thermal management requirements, thereby effectively controlling the internal temperature of the power battery, ensuring that the battery operates at a suitable temperature, and extending the battery's lifespan.

[0097] Optionally, in the electric compressor control device, the control module 32 includes:

[0098] The determining unit is configured to determine the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information when the temperature control demand information includes a first cooling signal.

[0099] The first control unit is used to perform proportional-integral closed-loop regulation control on the speed of the electric compressor based on the actual temperature, the target temperature, and the upper limit value of the proportional-integral closed-loop regulation control.

[0100] Optionally, in the electric compressor control device, the first control unit includes:

[0101] The first determining subunit is used to determine the temperature difference based on the actual temperature and the target temperature;

[0102] The second determining subunit is used to determine the target speed based on the temperature difference and the upper limit of the proportional-integral closed-loop control, using a proportional-integral closed-loop control algorithm.

[0103] A control subunit is used to adjust the speed of the electric compressor to the target speed.

[0104] Optionally, in the electric compressor control device, the determining unit includes:

[0105] The third determining subunit is used to determine the upper limit value of the proportional-integral closed-loop regulation control as a first limit value when the usage status information includes charging status information.

[0106] The fourth determining subunit is used to determine, when the usage status information does not include charging status information, the upper limit value of the proportional-integral closed-loop regulation control is a second limit value, wherein the second limit value is greater than the first limit value.

[0107] Optionally, in the electric compressor control device, the control module further includes:

[0108] The second control unit is used to control the electric compressor to rotate according to the upper limit of the electric compressor's rotation speed when the temperature control demand information includes a second cooling signal.

[0109] Another object of the present invention is to provide a storage medium having stored thereon a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executed as described above for the electric compressor control method.

[0110] Another object of the present invention is to provide an electronic device comprising:

[0111] Processor, adapted to implement various instructions; and

[0112] A storage medium suitable for storing multiple instructions, which are suitable for being loaded by a processor and executed as described above in the electric compressor control method.

[0113] Another object of the present invention is to provide a vehicle including a vehicle controller, the vehicle further including an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, the air conditioning system including an electric compressor, wherein the vehicle further includes the electric compressor control device as described above.

[0114] The storage medium, electronic device, and vehicle described above have the same advantages over the prior art as the electric compressor control method and device described above, and will not be repeated here.

[0115] In summary, this invention provides an electric compressor control method, device, storage medium, electronic device, and vehicle. By acquiring the actual temperature of the coolant flowing into the power battery, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery, the speed of the electric compressor is adjusted based on the actual temperature, the target temperature, the temperature control requirements, and the usage status information. Because the actual and target temperatures of the coolant flowing into the battery, the temperature control requirements of the power battery, and the usage status information are integrated, the speed of the electric compressor is dynamically adjusted. This allows for precise control of the cooling capacity provided by the electric compressor to the battery cooling circuit according to the power battery's own thermal management needs, thereby effectively controlling the internal temperature of the power battery, ensuring the battery operates at a suitable temperature, and extending battery life.

[0116] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0117] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0118] In a typical configuration, the computer device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory. Memory may include non-persistent memory in computer-readable media, random access memory (RAM), and / or non-volatile memory such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media. Computer-readable media includes both permanent and non-persistent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device. As defined in this article, computer-readable media do not include transient media, such as modulated data signals and carrier waves.

[0119] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0120] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0121] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0122] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0123] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0124] The present invention has provided a detailed description of an electric compressor control method, device, storage medium, electronic device, and vehicle. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for controlling an electric compressor, characterized in that, A vehicle controller for use in a vehicle, the vehicle also including an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, the air conditioning system including an electric compressor; The method includes: The actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery are obtained. The rotational speed of the electric compressor is adjusted according to the actual temperature, the target temperature, the temperature control requirement information, and the usage status information to control the cooling capacity provided by the electric compressor to the battery cooling circuit. This includes: when the temperature control requirement information includes a first cooling signal, determining a proportional-integral closed-loop control upper limit value based on the usage status information; performing proportional-integral closed-loop control on the rotational speed of the electric compressor based on the actual temperature, the target temperature, and the proportional-integral closed-loop control upper limit value; and controlling the electric compressor to rotate according to the upper limit value of the electric compressor's rotational speed when the temperature control requirement information includes a second cooling signal. The temperature control demand information refers to the strength signal of the temperature regulation demand of the power battery, which is determined by the current temperature of the power battery.

2. The electric compressor control method according to claim 1, characterized in that, The steps of performing proportional-integral closed-loop regulation control on the speed of the electric compressor based on the actual temperature, the target temperature, and the upper limit value of the proportional-integral closed-loop regulation control include: The temperature difference is determined based on the actual temperature and the target temperature. Based on the temperature difference and the upper limit of the proportional-integral closed-loop control, the target speed is determined using the proportional-integral closed-loop control algorithm. Adjust the speed of the electric compressor to the target speed.

3. The electric compressor control method according to claim 1, characterized in that, The step of determining the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information includes: When the usage status information includes charging status information, the upper limit value of the proportional-integral closed-loop regulation control is determined to be a first limit value; If the usage status information does not include charging status information, the upper limit value of the proportional-integral closed-loop regulation control is determined to be a second limit value, which is greater than the first limit value.

4. An electric compressor control device, characterized in that, A vehicle controller for use in a vehicle, the vehicle also including an air conditioning system, a power battery and a battery cooling circuit connected to the power battery, the air conditioning system including an electric compressor; The device includes: The acquisition module is used to acquire the actual temperature of the coolant flowing into the power battery in the battery cooling circuit, the target temperature of the coolant flowing into the power battery, the temperature control requirements of the power battery, and the usage status information of the power battery. The control module is used to adjust the speed of the electric compressor according to the actual temperature, the target temperature, the temperature control requirement information and the usage status information, so as to control the cooling capacity provided by the electric compressor to the battery cooling circuit; The control module includes: The determining unit is configured to determine the upper limit value of the proportional-integral closed-loop regulation control based on the usage status information when the temperature control demand information includes a first cooling signal. The first control unit is used to perform proportional-integral closed-loop regulation control on the speed of the electric compressor based on the actual temperature, the target temperature and the upper limit value of the proportional-integral closed-loop regulation control. The second control unit is used to control the electric compressor to rotate according to the upper limit of the electric compressor speed when the temperature control demand information includes the second cooling signal; The temperature control demand information refers to the strength signal of the temperature regulation demand of the power battery, which is determined by the current temperature of the power battery.

5. The electric compressor control device according to claim 4, characterized in that, The first control unit includes: The first determining subunit is used to determine the temperature difference based on the actual temperature and the target temperature; The second determining subunit is used to determine the target speed based on the temperature difference and the upper limit of the proportional-integral closed-loop control, using a proportional-integral closed-loop control algorithm. A control subunit is used to adjust the speed of the electric compressor to the target speed.

6. The electric compressor control device according to claim 4, characterized in that, The determining unit includes: The third determining subunit is used to determine the upper limit value of the proportional-integral closed-loop regulation control as a first limit value when the usage status information includes charging status information. The fourth determining subunit is used to determine, when the usage status information does not include charging status information, the upper limit value of the proportional-integral closed-loop regulation control is a second limit value, wherein the second limit value is greater than the first limit value.

7. A vehicle, comprising a vehicle controller, the vehicle further comprising an air conditioning system, a power battery, and a battery cooling circuit connected to the power battery, the air conditioning system comprising an electric compressor, characterized in that, The vehicle also includes an electric compressor control device as described in any one of claims 4 to 6.

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