WO2021204178A1 - 环境温度确定方法、电机控制器、控制系统及存储介质 - Google Patents

环境温度确定方法、电机控制器、控制系统及存储介质 Download PDF

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Publication number
WO2021204178A1
WO2021204178A1 PCT/CN2021/085882 CN2021085882W WO2021204178A1 WO 2021204178 A1 WO2021204178 A1 WO 2021204178A1 CN 2021085882 W CN2021085882 W CN 2021085882W WO 2021204178 A1 WO2021204178 A1 WO 2021204178A1
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Prior art keywords
temperature
motor
value
initial
vehicle
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PCT/CN2021/085882
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English (en)
French (fr)
Inventor
蒋哲
董欣然
徐福强
李玉山
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长城汽车股份有限公司
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Application filed by 长城汽车股份有限公司 filed Critical 长城汽车股份有限公司
Priority to US17/758,242 priority Critical patent/US20230052138A1/en
Priority to EP21785075.9A priority patent/EP4068079A4/en
Publication of WO2021204178A1 publication Critical patent/WO2021204178A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
    • B60L1/04—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
    • B60L1/06—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line using only one supply
    • B60L1/08—Methods and devices for control or regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present disclosure relates to the field of vehicle technology, and in particular to a method for determining ambient temperature, a motor controller, a control system, and a storage medium.
  • the ambient temperature is a very important parameter.
  • the entire vehicle and many controllers corresponding to vehicle components (such as vehicle air-conditioning controllers) need to obtain the ambient temperature to execute the corresponding control strategy.
  • the ambient temperature is collected mainly by installing an ambient temperature sensor on the vehicle body, but this solution will not only increase the cost of the entire vehicle, but may also affect the wiring of the entire vehicle.
  • the present disclosure aims to provide an environmental temperature determination method to solve the existing problem of relying on the environmental temperature sensor to collect the environmental temperature.
  • An ambient temperature determination method applied to a motor controller of a vehicle, and the ambient temperature determination method includes: when the vehicle is in a high-voltage power-on state, obtaining a plurality of effective temperature values for the same motor system, that is, the effective value of the motor temperature , The effective value of the battery temperature, the effective value of the motor controller temperature and the effective value of the coolant temperature; determine the corresponding initial temperature value according to the effective value of each temperature, including the initial value of the motor temperature, the initial value of the battery temperature, the initial value of the motor controller temperature and the The initial value of the coolant temperature; determine the minimum value among all the calculated initial temperature values as the initial environmental temperature; when the vehicle is in a driving state and the initial values of each temperature are less than or equal to their respective thresholds, the current temperature of the motor is obtained in real time And the current temperature of the coolant, and when the current temperature of the motor no longer rises, calculate the motor temperature difference and the coolant temperature difference of the current temperature of the motor and the current temperature of the coolant with respect to the
  • the obtaining multiple effective temperature values for the same motor includes: obtaining multiple effective temperature values within a set time; when the vehicle is in the high-voltage power-on state, enabling a preset A counter to obtain multiple effective values of the temperature consistent with the set count of the counter; or when the vehicle is in the high-voltage power-on state, obtain the vehicle stationary time from the vehicle controller to obtain A plurality of effective values of the temperature during the stationary time of the vehicle.
  • the determining the corresponding initial temperature value according to the effective temperature values of each item includes: calculating the average value of the effective temperature values obtained as the initial value of the motor temperature, the initial value of the battery temperature, and the The initial value of the motor controller temperature and the initial value of the coolant temperature.
  • the correlation between the motor temperature difference, the coolant temperature difference, and the temperature check amount is configured as the following formula:
  • Tem perr represents the temperature calibration amount
  • TM temperr represents the temperature difference of the motor
  • CW temperr represents the temperature difference of the coolant
  • K is the weighting coefficient
  • the method for determining the ambient temperature further includes: calculating an ambient temperature difference between the current ambient temperature and the initial ambient temperature; and when the ambient temperature difference is greater than a set threshold, determining that the ambient temperature corresponds to the environment The previous ambient temperature of the current temperature is taken as the final ambient temperature.
  • the method for determining the ambient temperature of the present disclosure has the following advantages: the method for determining the ambient temperature of the present disclosure can detect the ambient temperature without adding an ambient temperature sensor, reducing the cost of the entire vehicle, and optimizing the entire vehicle. Car wiring, and expand the function of the motor controller.
  • Another objective of the present disclosure is to provide a machine-readable storage medium to solve the existing problem of relying on the ambient temperature sensor to collect ambient temperature.
  • a machine-readable storage medium having instructions stored on the machine-readable storage medium for causing a machine to execute the above-mentioned method for determining the ambient temperature.
  • the machine-readable storage medium has the same advantages as the foregoing method for determining the ambient temperature over the prior art, and will not be repeated here.
  • Another objective of the present disclosure is to provide a motor controller to solve the existing problem of relying on the ambient temperature sensor to collect the ambient temperature.
  • a motor controller is used to run a program, where the program is used to execute when the program is run: the method for determining the ambient temperature as described above.
  • the motor controller has the same advantages as the aforementioned method for determining the ambient temperature over the prior art, and will not be repeated here.
  • Another objective of the present disclosure is to provide a control system for applying ambient temperature to solve the existing problem of relying on the ambient temperature sensor to collect ambient temperature.
  • a control system for applying ambient temperature includes: the above-mentioned motor controller, which is used to determine the ambient temperature of a vehicle; and a vehicle controller, which is used to obtain the ambient temperature from the motor controller to perform vehicle control.
  • control system for the application environment temperature further includes: a temperature detection device, which is adapted to the motor, the motor controller, and the battery installation, and is used to detect the motor temperature, battery temperature, and motor temperature of the same motor. The temperature of the controller and the temperature of the coolant are transmitted to the motor controller.
  • control system for the application environment temperature further includes a counter, which is adapted to be installed in the motor controller, and is used to set the number of the motor controller to obtain multiple effective temperature values for the same motor.
  • control system for the application environment temperature has the same advantages as the above-mentioned method for determining the environment temperature over the prior art, which will not be repeated here.
  • FIG. 1 is a schematic flowchart of a method for determining an ambient temperature according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a process of calculating an ambient temperature through a motor controller in an example of an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of the structure of a control system for applying ambient temperature according to an embodiment of the present disclosure
  • Fig. 4 schematically shows a block diagram of a computing processing device for executing the method according to the present disclosure.
  • Fig. 5 schematically shows a storage unit for holding or carrying program codes for implementing the method according to the present disclosure.
  • FIG. 1 is a schematic flowchart of a method for determining an ambient temperature according to an embodiment of the present disclosure. As shown in Figure 1, the method for determining the ambient temperature may include the following steps:
  • step S100 when the vehicle is in a high-voltage power-on state, obtain a plurality of the following effective temperature values for the same motor system: effective motor temperature, effective battery temperature, effective motor controller temperature, and effective coolant temperature.
  • the vehicle is initially in the high-voltage power-on state is a prerequisite for the implementation of the ambient temperature determination method of the embodiment of the present disclosure, and the purpose is to ensure that the correspondingly acquired effective value of the temperature is the temperature value acquired during the static time of the cold-started vehicle.
  • the components of the motor system have not started to operate within the time, and the corresponding temperature values are relatively stable and close to the ambient temperature, so it is suitable for determining the initial ambient temperature in the follow-up.
  • the motor, battery, motor control unit (MCU) and coolant are components of the same motor system, and: the motor is used to provide power; the battery is usually in the form of a module, which is called a battery module. It is used to supply power to the motor and the MCU; the MCU is used to adjust the rotation speed of the motor; the coolant is the medium used to reduce the temperature of the motor in the motor cooling system.
  • the motor is used to provide power
  • the battery is usually in the form of a module, which is called a battery module. It is used to supply power to the motor and the MCU
  • the MCU is used to adjust the rotation speed of the motor
  • the coolant is the medium used to reduce the temperature of the motor in the motor cooling system.
  • the corresponding effective temperature value can be obtained by configuring corresponding temperature sensors for the motor, battery, MCU, and coolant.
  • the motor stator temperature can be used as the motor temperature.
  • the effective temperature value refers to the effective temperature value after filtering out obviously wrong detected temperature values.
  • this step S100 requires obtaining a plurality of effective values of each temperature.
  • the number of effective temperature values obtained can be controlled through any one of the following solutions:
  • the number of effective temperature values obtained can be determined by setting the time period of how many time periods are included.
  • the counter is enabled, the number of counts is set, and the number of counts is increased by 1 each time the effective value of temperature is acquired, so that the number of effective values of temperature can be controlled by pre-setting the count of the counter.
  • step S100 The following steps will determine the corresponding initial temperature value and the initial environmental temperature based on the multiple effective temperature values obtained in step S100, and will not be repeated here.
  • step S200 the corresponding initial temperature value is determined according to the effective values of various temperatures, including: the initial value of the motor temperature, the initial value of the battery temperature, the initial value of the motor controller temperature, and the initial value of the coolant temperature.
  • one temperature effective value can be selected directly from a plurality of temperature effective values as the initial temperature value, or one temperature effective value can also be selected as the initial temperature value through a preset rule.
  • the average value of the acquired effective temperature values is calculated as the initial value of the motor temperature, the initial value of the battery temperature, the initial value of the motor controller temperature, and the coolant. Initial value of temperature. In this way, by performing average processing on the obtained multiple effective temperature values, the obtained initial values of the various temperatures can be closer to the actual temperature of the vehicle in the high-voltage power-on state.
  • step S300 it is determined that the minimum value among all the calculated initial temperature values is the initial environmental temperature.
  • the initial value of the motor temperature, the initial value of the battery temperature, the initial value of the motor controller temperature, and the initial value of the coolant temperature are 45°C, 43°C, 42°C, and 41°C, then take The minimum value of 41°C is used as the initial ambient temperature.
  • Step S400 when the vehicle is in a driving state and the initial values of various temperatures are less than or equal to their respective thresholds, obtain the current temperature of the motor and the current temperature of the coolant in real time, and calculate the current temperature of the motor when the current temperature does not rise any more.
  • the current temperature of the motor and the current temperature of the cooling liquid are respectively the motor temperature difference and the cooling liquid temperature difference relative to the corresponding initial value of the temperature.
  • the threshold values corresponding to the initial value of the motor temperature, the initial value of the battery temperature, the initial value of the motor controller temperature, and the initial value of the coolant temperature are set to 45°C, 45°C, 40°C, and 45°C, respectively. °C, if it exceeds the corresponding threshold, it indicates that the corresponding component may be in abnormal operation. If the ambient temperature calculation is continued, the correct result cannot be obtained, so it can be considered to be abandoned.
  • Each threshold is a calibrated value, which can be set according to the actual situation.
  • the corresponding threshold is set to 45°C.
  • the temperature difference calculation is performed after the temperature of the motor is stabilized (no increase).
  • TM temperr TM tempcurrent -TM tempinit (1)
  • TM tempcurrent represents the current temperature of the motor when the motor temperature no longer rises
  • TM tempinit represents the initial value of the motor temperature
  • CW tempcurrent represents the current temperature of the coolant
  • CW tempint represents the initial value of the coolant temperature
  • Step S500 Calculate the temperature check value for the ambient temperature according to the motor temperature difference and the coolant temperature difference, where the motor temperature difference, the coolant temperature difference, and the temperature
  • the verification amount has a pre-configured association relationship.
  • the relationship between the motor temperature difference, the coolant temperature difference, and the temperature check amount can be configured in advance, and the motor temperature difference and the coolant temperature difference are calculated in step S400. After the value is calculated, the corresponding temperature check amount is calculated according to the correlation relationship.
  • the association relationship may be configured based on experience, for example, the association relationship may be configured according to the influence weight of the motor temperature difference and the coolant temperature difference on the calculation result of the ambient temperature.
  • Temp err represents the temperature check amount
  • K is a calibratable weight coefficient
  • Step S600 Calculate the current temperature of the environment based on the temperature check amount and the initial environment temperature.
  • the current temperature Temp of the environment is calculated by the following formula (4):
  • Temp init is the initial ambient temperature recorded in step S300.
  • the initial temperature of the environment can be continuously checked based on the temperature checking amount that changes with the real-time temperature of the motor and the real-time temperature of the coolant to obtain the corresponding current temperature of the environment.
  • step S600 the following steps may be further included: calculating the environmental temperature difference between the current environmental temperature and the initial environmental temperature; and when the environmental temperature difference is greater than a set threshold, The previous ambient temperature corresponding to the current temperature of the environment is determined as the final determined ambient temperature.
  • the current calculation result is invalidated and the previous The current ambient temperature calculated at a time of 25°C is the final calculated ambient temperature.
  • FIG. 2 is a schematic diagram of the process of calculating the ambient temperature by the motor controller in the example of the embodiment of the present disclosure. As shown in FIG. 2, the process of this example may include the following steps:
  • step S201 it is judged whether the whole vehicle is in the power-on state, if yes, execute the next step, otherwise continue to judge there.
  • step S202 it is judged whether the whole vehicle is in a high pressure state, if so, the next step is executed, otherwise, the judgment is continued there.
  • Step S203 Read the temperature of each sensor, and enable the counter to count.
  • the count amount is recorded as Count.
  • step S204 it is judged whether the effective value of temperature has been accumulated for a certain number of times, if so, the next step is executed, otherwise, it returns to step S202 and counts again.
  • the effective value of the temperature is the above-mentioned effective value of the motor temperature, the effective value of the battery temperature, the effective value of the motor controller temperature, and the effective value of the coolant temperature, and the method for obtaining it will not be repeated here.
  • the number of accumulated temperature effective values is controlled by controlling Count++.
  • Step S205 averaging the effective temperature values to obtain the initial temperature value.
  • the initial temperature value is the above-mentioned initial value of motor temperature, battery temperature, initial value of motor controller temperature, and initial value of coolant temperature, and the method of obtaining it will not be repeated here.
  • step S206 it is judged whether the initial value of each temperature is less than or equal to the corresponding threshold value, if yes, step S207 is executed; otherwise, the current initial temperature value is recorded and step 209 is skipped.
  • this step may include determining whether the following conditions are true (the units are all degrees Celsius):
  • step S207 the smallest initial temperature value is selected as the initial environmental temperature.
  • step S208 it is determined whether the motor has a rotating speed, and if so, the next step is executed; otherwise, the initial environmental temperature is determined as the current value, and step 210 is skipped.
  • step S209 it is judged whether the temperature of the motor no longer rises, if so, the next step is executed, otherwise the process is ended.
  • step S210 the initial environmental temperature is checked to obtain the current environmental temperature.
  • step S211 it is judged whether the difference between the current temperature of the environment and the initial temperature of the environment exceeds the threshold, if so, the counter is cleared, and step S202 is returned, otherwise the process ends.
  • the method for determining the ambient temperature in the embodiments of the present disclosure can detect the ambient temperature without adding an ambient temperature sensor, reducing the cost of the entire vehicle, optimizing the wiring of the entire vehicle, and expanding the function of the motor controller .
  • Another embodiment of the present disclosure provides a motor controller, which is used to run a program, where the program is used to execute the ambient temperature determination method described in the foregoing embodiment when the program is run.
  • FIG. 3 is a schematic structural diagram of a control system for applying ambient temperature according to an embodiment of the present disclosure.
  • the control system may include: the motor controller 301 described in the above embodiment, which is used to determine the ambient temperature of the vehicle And the vehicle controller 302, which is used to obtain the ambient temperature from the motor controller for vehicle control.
  • the vehicle controller 302 performs in-vehicle cooling control, ventilation control, etc., based on the ambient temperature acquired from the motor controller 301, for example.
  • the vehicle controller 302 can also provide the motor controller 301 with parameters such as vehicle stationary time.
  • the control system for the application environment temperature may further include: a temperature detection device 303, which is adapted to the motor, the motor controller, and the battery installation, and is used to detect the motor temperature and battery temperature of the same motor. , The temperature of the motor controller and the temperature of the coolant are transmitted to the motor controller 301.
  • the temperature detection device 303 is a plurality of temperature sensors adapted to be installed in the motor, the motor controller, and the battery.
  • control system for the application environment temperature may further include: a counter 304, adapted to be installed in the motor controller 301, and configured to set the motor controller 301 to obtain multiple temperature effective values for the same motor quantity. More preferably, the counter 304 can be integrated in the motor controller 301.
  • Another embodiment of the present disclosure further provides a machine-readable storage medium having instructions stored on the machine-readable storage medium, and the instructions are used to make a machine execute the method for determining the ambient temperature described in the foregoing embodiments.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product 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 codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment is executed
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • the memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM).
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer-readable instructions, data structures, program modules, 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 technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.
  • the device embodiments described above are merely illustrative.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units.
  • Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.
  • the various component embodiments of the present disclosure may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the computing processing device according to the embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as a device or device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
  • Such a program for realizing the present disclosure may be stored on a computer-readable medium, or may have the form of one or more signals.
  • Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.
  • FIG. 4 shows a computing processing device that can implement the method according to the present disclosure.
  • the computing processing device traditionally includes a processor 1010 and a computer program product in the form of a memory 1020 or a computer readable medium.
  • the memory 1020 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has a storage space 1030 for executing program codes 1031 of any method steps in the above methods.
  • the storage space 1030 for program codes may include various program codes 1031 respectively used to implement various steps in the above method. These program codes can be read from or written into one or more computer program products.
  • Such computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards, or floppy disks.
  • Such a computer program product is usually a portable or fixed storage unit as described with reference to FIG. 5.
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1020 in the computing processing device of FIG. 4.
  • the program code can be compressed in an appropriate form, for example.
  • the storage unit includes computer-readable code 1031', that is, code that can be read by a processor such as 1010, which, when run by a computing processing device, causes the computing processing device to execute the method described above. The various steps.

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Abstract

本公开涉及车辆技术领域，提供一种环境温度确定方法、电机控制器、控制系统及存储介质。本公开方法应用于电机控制器，且包括：在车辆处于高压上电状态时，获取多个针对同一电机系统的温度有效值；根据各项温度有效值确定对应的温度初始值；确定所计算的所有温度初始值中的最小值为环境初始温度；在车辆处于行驶状态且各温度初始值小于或等于各自对应阈值、电机当前温度不再上升时，计算电机当前温度和冷却液当前温度分别相对于对应温度初始值的差值；根据所计算的差值，计算针对所述环境温度的温度校核量；以及基于温度校核量和环境初始温度，计算环境当前温度。本公开无需增加环境温度传感器，即可实现对环境温度的检测，降低了整车成本。

Description

环境温度确定方法、电机控制器、控制系统及存储介质
相关申请的交叉引用
本公开要求在2020年04月08日提交中国专利局、申请号为202010270328.0、名称为“环境温度确定方法、电机控制器、控制系统及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及车辆技术领域，特别涉及一种环境温度确定方法、电机控制器、控制系统及存储介质。
背景技术
现有车辆控制技术中，环境温度是非常重要的参数，整车及对应于车辆部件的许多控制器(例如车辆空调控制器)，都需要获取环境温度以执行相应的控制策略。目前，主要是通过在车身上安装环境温度传感器来采集环境温度，但这一方案不仅会增加整车成本，还可能影响整车布线。
公开内容
有鉴于此，本公开旨在提出一种环境温度确定方法，以解决现有依赖环境温度传感器采集环境温度的问题。
为达到上述目的，本公开的技术方案是这样实现的：
一种环境温度确定方法，应用于车辆的电机控制器，且所述环境温度确定方法包括：在车辆处于高压上电状态时，获取多个针对同一电机系统的温度有效值，即电机温度有效值、电池温度有效值、电机控制器温度有效值及冷却液温度有效值；根据各项温度有效值确定对应的温度初始值，包括电机温度初始值、电池温度初始值、电机控制器温度初始值及冷却液温度初始值；确定所计算的所有温度初始值中的最小值为环境初始温度；在所述车辆处于行驶状态且各项温度初始值小于或等于各自对应的阈值时，实时获取电机当前温度和冷却液当前温度，并在所述电机当前温度不再上升时，计算所述电机当前温度和所述冷却液当前温度分别相对于对应温度初始值的电机温度差 值及冷却液温度差值；根据所述电机温度差值和所述冷却液温度差值，计算针对所述环境温度的温度校核量，其中所述电机温度差值、所述冷却液温度差值及所述温度校核量具有预先配置的关联关系；以及基于所述温度校核量和所述环境初始温度，计算环境当前温度。
进一步的，所述获取多个针对同一电机的以下温度有效值包括：获取设定时间内的多个所述温度有效值；在所述车辆处于所述高压上电状态时，使能预置的计数器，以获取与所述计数器的设定计数量相一致的多个所述温度有效值；或者在所述车辆处于所述高压上电状态时，从整车控制器获取车辆静止时间，以获取所述车辆静止时间内的多个所述温度有效值。
进一步的，所述根据各项温度有效值确定对应的温度初始值包括：计算所获取的各项温度有效值的平均值以分别作为所述电机温度初始值、所述电池温度初始值、所述电机控制器温度初始值及所述冷却液温度初始值。
进一步的，所述电机温度差值、所述冷却液温度差值及所述温度校核量之间的所述关联关系被配置为下式：
Figure PCTCN2021085882-appb-000001
式中，Tem perr表示所述温度校核量，TM temperr表示所述电机温度差值，CW temperr表示所述冷却液温度差值，K为权重系数，
Figure PCTCN2021085882-appb-000002
为不同温度区间的标定参数。
进一步的，所述环境温度确定方法还包括：计算所述环境当前温度与所述环境初始温度的环境温度差值；以及在所述环境温度差值大于设定阈值时，确定对应于所述环境当前温度的前一次环境温度作为最终确定的环境温度。
相对于现有技术，本公开所述的环境温度确定方法具有以下优势：本公开的环境温度确定方法无需增加环境温度传感器，就能够实现对环境温度的检测，降低了整车成本，优化了整车布线，且扩展了电机控制器的功能。
本公开的另一目的在于提出一种机器可读存储介质，以解决现有依赖环境温度传感器采集环境温度的问题。
为达到上述目的，本公开的技术方案是这样实现的：
一种机器可读存储介质，该机器可读存储介质上存储有指令，该指令用 于使得机器执行上述的环境温度确定方法。
所述机器可读存储介质与上述环境温度确定方法相对于现有技术所具有的优势相同，在此不再赘述。
本公开的另一目的在于提出一种电机控制器，以解决现有依赖环境温度传感器采集环境温度的问题。
为达到上述目的，本公开的技术方案是这样实现的：
一种电机控制器，用于运行程序，其中，所述程序被运行时用于执行：如上述的环境温度确定方法。
所述电机控制器与上述环境温度确定方法相对于现有技术所具有的优势相同，在此不再赘述。
本公开的另一目的在于提出一种应用环境温度的控制系统，以解决现有依赖环境温度传感器采集环境温度的问题。
为达到上述目的，本公开的技术方案是这样实现的：
一种应用环境温度的控制系统，包括：上述的电机控制器，用于确定车辆的环境温度；以及整车控制器，用于从所述电机控制器获取所述环境温度以进行整车控制。
进一步的，所述应用环境温度的控制系统还包括：温度检测装置，适配于所述电机、所述电机控制器以及所述电池安装，用于检测针对同一电机的电机温度、电池温度、电机控制器温度及冷却液温度，并传输给所述电机控制器。
进一步的，所述应用环境温度的控制系统还包括：计数器，适配于所述电机控制器安装，用于设定所述电机控制器获取多个针对同一电机的温度有效值的数量。
所述应用环境温度的控制系统与上述环境温度确定方法相对于现有技术所具有的优势相同，在此不再赘述。
本公开的其它特征和优点将在随后的具体实施方式部分予以详细说明。
上述说明仅是本公开技术方案的概述，为了能够更清楚了解本公开的技术手段，而可依照说明书的内容予以实施，并且为了让本公开的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施方式及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是本公开实施例的一种环境温度确定方法的流程示意图；
图2是本公开实施例的示例中通过电机控制器计算出环境温度的流程示意图；
图3是是本公开实施例的应用环境温度的控制系统的结构示意图；
图4示意性地示出了用于执行根据本公开的方法的计算处理设备的框图；并且
图5示意性地示出了用于保持或者携带实现根据本公开的方法的程序代码的存储单元。
具体实施例
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
需要说明的是，在不冲突的情况下，本公开中的实施方式及实施方式中的特征可以相互组合。
下面将参考附图并结合实施方式来详细说明本公开。
图1是本公开实施例的一种环境温度确定方法的流程示意图。如图1所示，该环境温度确定方法可以包括以下步骤：
步骤S100，在车辆处于高压上电状态时，获取多个针对同一电机系统的以下温度有效值：电机温度有效值、电池温度有效值、电机控制器温度有效 值及冷却液温度有效值。
在此，车辆初始处于高压上电状态是执行本公开实施例的环境温度确定方法的前提条件，目的是保证相应获取的温度有效值为在冷启动车辆的静止时间内获取的温度值，这一时间内电机系统各部件并未开始运行，对应的温度值相对较为稳定，与环境温度较为接近，从而适合在后续用于确定出环境初始温度。
其中，电机、电池、电机控制器(Motor Control Unit，MCU)及冷却液是属于同一个电机系统的组成部分，并且：电机用于提供动力；电池通常为模组形式，以称电池模组，用于向电机及MCU供电；MCU用于对所述电机进行转速等调节；冷却液为电机冷却系统中用于降低电机温度的介质。
举例而言，可通过针对电机、电池、MCU及冷却液配置相应温度传感器的方式来获取对应的温度有效值。其中，为便于温度传感器进行安装或检测，可将电机定子温度作为电机温度。在此，所述温度有效值是指过滤掉明显错误的检测温度值后的有效温度值。
另外，为后续步骤考虑，该步骤S100要求获取多个各个温度有效值。对此，在优选的实施例中，可通过以下任意一种方案来控制获取的温度有效值的数量：
1)获取设定时间内的多个所述温度有效值。
举例而言，每隔一定的时间周期获取一次温度有效值，则可通过设定包括多少个时间周期的时间段来确定获得的温度有效值的数量。
2)在所述车辆处于所述高压上电状态时，使能预置的计数器，以获取与所述计数器的设定计数量相一致的多个所述温度有效值。
举例而言，使能计数器，设定计数量，每获取一次温度有效值，则计数量加1，从而能够通过预先设定计数器的计数量来控制获得的温度有效值的数量。
3)在所述车辆处于所述高压上电状态时，从整车控制器获取车辆静止时间，以获取所述车辆静止时间内的多个所述温度有效值。
需说明的是，车辆从冷启动进入高压上电状态，是有一段车辆未启动的静止时间的，而整车控制器可记录这一车辆静止时间。在不需要明确确定获取的温度有效值数量的情况下，可直接获取这一车辆静止时间内的所有温度 有效值。
下述步骤将基于该步骤S100获取的多个温度有效值确定相应的温度初始值及环境初始温度，在此则不进行赘述。
步骤S200，根据各项温度有效值确定对应的温度初始值，包括：电机温度初始值、电池温度初始值、电机控制器温度初始值及冷却液温度初始值。
举例而言，可直接从多个温度有效值中任意挑选一个温度有效值作为温度初始值，或者也可通过预设的规则选出一个温度有效值作为温度初始值。
但在优选的实施例中，计算所获取的各项温度有效值的平均值以分别作为所述电机温度初始值、所述电池温度初始值、所述电机控制器温度初始值及所述冷却液温度初始值。如此，通过对获取的多个温度有效值进行平均值处理，能使得获得的各项温度初始值更贴近于车辆处于高压上电状态下的实际温度情况。
步骤S300，确定所计算的所有温度初始值中的最小值为环境初始温度。
举例而言，所述电机温度初始值、所述电池温度初始值、所述电机控制器温度初始值及所述冷却液温度初始值分别为45℃、43℃、42℃、41℃，则取其中的最小值41℃作为环境初始温度。
步骤S400，在所述车辆处于行驶状态且各项温度初始值小于或等于各自对应的阈值时，实时获取电机当前温度和冷却液当前温度，并在所述电机当前温度不再上升时，计算所述电机当前温度和所述冷却液当前温度分别相对于对应温度初始值的电机温度差值及冷却液温度差值。
举例而言，通过判断电机是否有转速来判断车辆是否处于行驶状态，若有转速，则确定车辆处于行驶状态。另外，设定所述电机温度初始值、所述电池温度初始值、所述电机控制器温度初始值及所述冷却液温度初始值各自对应的阈值分别为45℃、45℃、40℃、45℃，若超出对应阈值，则表明相应部件可能处于不正常运行，若继续进行环境温度计算也得不到正确结果，故而可考虑放弃。各个阈值是标定值，可根据实际进行设定，例如根据电机温度一般不会超过45℃的特点，设定其对应阈值为45℃。另外，若电机温度不断变化，会使得计算的温度差值出现很大的波动，故而本公开实施例在电机温度稳定后(不再上升)，再进行温度差值计算。
继续举例，在满足上述条件的基础上，通过下述的式(1)和式(2)计 算电机温度差值TM temperr以及冷却液温度差值CW temperr：
TM temperr＝TM tempcurrent-TM tempinit     (1)
CW temperr＝CW tempcurrent-CW tempint    (2)
式中，TM tempcurrent表示电机温度不再上升时的电机当前温度，TM tempinit表示电机温度初始值，CW tempcurrent表示冷却液当前温度，CW tempint表示冷却液温度初始值。
步骤S500，根据所述电机温度差值和所述冷却液温度差值，计算针对所述环境温度的温度校核量，其中所述电机温度差值、所述冷却液温度差值及所述温度校核量具有预先配置的关联关系。
即，可预先配置所述电机温度差值、所述冷却液温度差值及所述温度校核量之间的关联关系，在步骤S400计算出所述电机温度差值和所述冷却液温度差值之后，再根据所述关联关系计算出对应的温度校核量。其中，所述关联关系可基于经验进行配置，例如根据所述电机温度差值、所述冷却液温度差值各自对环境温度计算结果的影响权重来配置所述关联关系。
但是，在优选的实施例中，承接于上述的式(1)和式(2)，所述电机温度差值、所述冷却液温度差值及所述温度校核量之间的所述关联关系被配置为下面的式(3)：
Figure PCTCN2021085882-appb-000003
式中，Temp err表示所述温度校核量，K为可标定的权重系数，
Figure PCTCN2021085882-appb-000004
为不同温度区间的标定参数。
例如：
温度 0 10 20 30 40
标定值 0.99 0.91 0.82 0.64 0.39
步骤S600，基于所述温度校核量和所述环境初始温度，计算环境当前温度。
举例而言，承接式(3)，通过下面的式(4)计算出环境当前温度Temp：
Temp＝Temp init+Temp err    (4)
式中，Temp init为步骤S300记录的环境初始温度。
如此，通过式(4)，可以基于随电机实时温度及冷却液实时温度不断变化的温度校核量来不断校核环境初始温度，以得到相应的环境当前温度。
在优选的实施例中，在步骤S600之后，还可以包括以下步骤：计算所述环境当前温度与所述环境初始温度的环境温度差值；以及在所述环境温度差值大于设定阈值时，确定对应于所述环境当前温度的前一次环境温度作为最终确定的环境温度。
举例而言，计算出的所述环境当前温度为20℃，其与对应的环境初始温度40℃之间的差值20℃大于设定的阈值18℃，则将当前计算结果作废，并将前一次计算出的为25℃的环境当前温度为最终计算出的环境温度。
下面通过示例来说明本公开实施例的环境温度确定方法在车辆从冷启动到行驶的过程中的应用。图2是本公开实施例的示例中通过电机控制器计算出环境温度的流程示意图，如图2所示，该示例的流程可包括以下步骤：
步骤S201，判断整车是否处于上电状态，若是则执行下一步，否则继续该处判断。
步骤S202，判断整车是否处于高压状态，若是则执行下一步，否则继续该处判断。
步骤S203，读取各个传感器温度，使能计数器进行计数。
其中，计数量记为Count。
步骤S204，判断是否已累计一定次数的温度有效值，若是则执行下一步，否则返回步骤S202并重新计数。
其中，所述温度有效值为上述的电机温度有效值、电池温度有效值、电机控制器温度有效值及冷却液温度有效值，在此不再对其获取方法进行赘述。另外，通过控制Count++来控制累计的温度有效值的数量。
步骤S205，对温度有效值求平均值，得到温度初始值。
其中，所述温度初始值为上述的电机温度初始值、电池温度初始值、电机控制器温度初始值及冷却液温度初始值，在此不再对其获取方法进行赘述。
步骤S206，判断各温度初始值是否小于或等于对应阈值，若是则执行步骤S207，否则记录当前温度初始值并跳至步骤209。
举例而言，该步骤可包括判断以下条件是否成立(其中的单位均为摄氏 度)：
1)电池温度初始值<＝45(标定值)；以及
2)电机温度初始值<＝45(标定值)；以及
3)电机控制器温度初始值<＝40(标定值)；以及
4)冷却液温度初始值<＝45(标定值)。
步骤S207，选择最小的温度初始值作为环境初始温度。
步骤S208，判断电机是否有转速，若是则执行下一步，否则将环境初始温度确定为当前值并跳至步骤210。
步骤S209，判断电机温度是否不再上升，若是则执行下一步，否则结束流程。
步骤S210，校核环境初始温度以得到环境当前温度。
其中，可参考上述的式(1)-(4)进行校核，在此则不再进行赘述。
步骤S211，判断环境当前温度与环境初始温度的差值是否超过阈值，若是则计数器清零，并返回步骤S202，否则结束流程。
因此，结合示例，可知本公开实施例的环境温度确定方法无需增加环境温度传感器，即可实现对环境温度的检测，降低了整车成本，优化了整车布线，且扩展了电机控制器的功能。
本公开另一实施例提供了一种电机控制器，其用于运行程序，其中，所述程序被运行时用于执行上述实施例所述的环境温度确定方法。
其中，关于该电机控制器实现环境温度确定的细节及效果可参考上述关于环境温度确定方法的实施例，在此则不再进行赘述
在此基础上，本公开又一实施例提供了一种应用环境温度的控制系统。图3是是本公开实施例的应用环境温度的控制系统的结构示意图，如图3所示，所述控制系统可以包括：上述实施例所述的电机控制器301，用于确定车辆的环境温度；以及整车控制器302，用于从所述电机控制器获取所述环境温度以进行整车控制。
举例而言，整车控制器302例如根据从所述电机控制器301获取所述环境温度进行车内降温控制、通风控制等。另外，整车控制器302也可向电机控制器301提供车辆静止时间等参数。
优选地，所述应用环境温度的控制系统还可以包括：温度检测装置303， 适配于所述电机、所述电机控制器以及所述电池安装，用于检测针对同一电机的电机温度、电池温度、电机控制器温度及冷却液温度，并传输给所述电机控制器301。举例而言，所述温度检测装置303为适配于所述电机、所述电机控制器以及所述电池安装的多个温度传感器。
优选地，所述应用环境温度的控制系统还可以包括：计数器304，适配于所述电机控制器301安装，用于设定所述电机控制器301获取多个针对同一电机的温度有效值的数量。更为优选地，所述计数器304可集成在所述电机控制器301中。
关于该应用环境温度的控制系统的更多实施细节及效果可参考上述关于环境温度确定方法的实施例，在此则不再进行赘述。
本公开另一实施例还提供一种机器可读存储介质，该机器可读存储介质上存储有指令，该指令用于使得机器执行上述实施例所述的环境温度确定方法。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
本公开的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本公开实施例的计算处理设备中的一些或者全部部件的一些或者全部功能。本公开还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本公开的程 序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图4示出了可以实现根据本公开的方法的计算处理设备。该计算处理设备传统上包括处理器1010和以存储器1020形式的计算机程序产品或者计算机可读介质。存储器1020可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器1020具有用于执行上述方法中的任何方法步骤的程序代码1031的存储空间1030。例如，用于程序代码的存储空间1030可以包括分别用于实现上面的方法中的各种步骤的各个程序代码1031。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图5所述的便携式或者固定存储单元。该存储单元可以具有与图4的计算处理设备中的存储器1020类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码1031’，即可以由例如诸如1010之类的处理器读取的代码，这些代码当由计算处理设备运行时，导致该计算处理设备执行上面所描述的方法中的各个步骤。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本公开的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本公开的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、 商品或者设备中还存在另外的相同要素。
以上仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (12)

  1. 一种环境温度确定方法，其特征在于，应用于车辆的电机控制器，且所述环境温度确定方法包括：
    在车辆处于高压上电状态时，获取多个针对同一电机系统的以下温度有效值：电机温度有效值、电池温度有效值、电机控制器温度有效值及冷却液温度有效值；
    根据各项温度有效值确定对应的温度初始值，包括：电机温度初始值、电池温度初始值、电机控制器温度初始值及冷却液温度初始值；
    确定所计算的所有温度初始值中的最小值为环境初始温度；
    在所述车辆处于行驶状态且各项温度初始值小于或等于各自对应的阈值时，实时获取电机当前温度和冷却液当前温度，并在所述电机当前温度不再上升时，计算所述电机当前温度和所述冷却液当前温度分别相对于对应温度初始值的电机温度差值及冷却液温度差值；
    根据所述电机温度差值和所述冷却液温度差值，计算针对所述环境温度的温度校核量，其中所述电机温度差值、所述冷却液温度差值及所述温度校核量具有预先配置的关联关系；以及
    基于所述温度校核量和所述环境初始温度，计算环境当前温度。
  2. 根据权利要求1所述的环境温度确定方法，其特征在于，所述获取多个针对同一电机的以下温度有效值包括：
    获取设定时间内的多个所述温度有效值；
    在所述车辆处于所述高压上电状态时，使能预置的计数器，以获取与所述计数器的设定计数量相一致的多个所述温度有效值；或者
    在所述车辆处于所述高压上电状态时，从整车控制器获取车辆静止时间，以获取所述车辆静止时间内的多个所述温度有效值。
  3. 根据权利要求1所述的环境温度确定方法，其特征在于，所述根据各项温度有效值确定对应的温度初始值包括：
    计算所获取的各项温度有效值的平均值以分别作为所述电机温度初始值、所述电池温度初始值、所述电机控制器温度初始值及所述冷却液温度初始值。
  4. 根据权利要求1所述的环境温度确定方法，其特征在于，所述电机温度差值、所述冷却液温度差值及所述温度校核量之间的所述关联关系被配置 为下式：
    Figure PCTCN2021085882-appb-100001
    式中，Temp err表示所述温度校核量，TM temperr表示所述电机温度差值，CW temperr表示所述冷却液温度差值，K为权重系数，
    Figure PCTCN2021085882-appb-100002
    为不同温度区间的标定参数。
  5. 根据权利要求1所述的环境温度确定方法，其特征在于，所述环境温度确定方法还包括：
    计算所述环境当前温度与所述环境初始温度的环境温度差值；以及
    在所述环境温度差值大于设定阈值时，确定对应于所述环境当前温度的前一次环境温度作为最终确定的环境温度。
  6. 一种机器可读存储介质，该机器可读存储介质上存储有指令，该指令用于使得机器执行权利要求1-5任意一项所述的环境温度确定方法。
  7. 一种电机控制器，其特征在于，用于运行程序，其中，所述程序被运行时用于执行：根据权利要求1-5任意一项所述的环境温度确定方法。
  8. 一种应用环境温度的控制系统，其特征在于，所述应用环境温度的控制系统包括：
    权利要求7所述的电机控制器，用于确定车辆的环境温度；以及
    整车控制器，用于从所述电机控制器获取所述环境温度以进行整车控制。
  9. 根据权利要求8所述的应用环境温度的控制系统，其特征在于，所述应用环境温度的控制系统还包括：
    温度检测装置，适配于所述电机、所述电机控制器以及所述电池安装，用于检测针对同一电机的电机温度、电池温度、电机控制器温度及冷却液温度，并传输给所述电机控制器。
  10. 根据权利要求8所述的应用环境温度的控制系统，其特征在于，所述应用环境温度的控制系统还包括：
    计数器，适配于所述电机控制器安装，用于设定所述电机控制器获取多个针对同一电机的温度有效值的数量。
  11. 一种计算处理设备，其特征在于，包括：
    存储器，其中存储有计算机可读代码；以及
    一个或多个处理器，当所述计算机可读代码被所述一个或多个处理器执行时，所述计算处理设备执行如权利要求1-5中任一项所述的环境温度确定方法。
  12. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据权利要求1-5中任一项所述的环境温度确定方法。
PCT/CN2021/085882 2020-04-08 2021-04-08 环境温度确定方法、电机控制器、控制系统及存储介质 WO2021204178A1 (zh)

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