CN115686102B - Motor temperature control method and device and engineering vehicle - Google Patents
Motor temperature control method and device and engineering vehicle Download PDFInfo
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Abstract
The application discloses a motor temperature control method, a motor temperature control device and an engineering vehicle, wherein state parameters of a motor are obtained; wherein the state parameters include temperature and operating parameters of the motor; then, according to the operation parameters, calculating to obtain the heating power consumption change rate of the motor; finally, according to the temperature and the heating power consumption change rate of the motor, determining the operation parameters of the cooling part of the motor; the method comprises the steps of obtaining the temperature and the operation parameters of the motor at the current moment, calculating the heating power consumption change rate of the motor based on the operation parameters at the current moment, predicting the heating change trend of the motor, namely predicting the heating value increasing speed of the motor, so as to estimate the subsequent heating value of the motor, determining the operation parameters of the cooling part of the motor according to the temperature at the current moment to meet the heat dissipation requirement at the current moment, and simultaneously considering the estimated subsequent heating value of the motor to respond to the heat dissipation requirement of the motor in advance, so that the heat dissipation response speed is accelerated, and the heat dissipation effect of the motor is improved.
Description
Technical Field
The application relates to the technical field of motor temperature control, in particular to a motor temperature control method and device and an engineering vehicle.
Background
With the continuous development of new energy technology, more and more vehicles use electric motors as important components in driving systems, such as pure electric vehicles, hybrid electric vehicles, and the like. However, in complex road driving conditions, the motor or related electronics are often damaged by excessive temperatures or large temperature fluctuations, and therefore temperature control of the motor is necessary.
Currently, most cooling systems for electric drive assemblies are in a series configuration, i.e., the entire electric drive assembly is connected in series by a single circulation loop to dissipate heat from the entire electric drive assembly. For many vehicles, the temperature of the motor is collected, and the operation parameters of the cooling system, such as the rotation speed of the water pump, are controlled according to the temperature of the motor. However, there is a certain delay in temperature acquisition of the motor, and when the temperature of the motor rises, heat dissipation measures are taken, so that the motor cannot be well avoided from being too high in temperature, and the motor is likely to reach a high temperature state, so that loss of the motor is caused.
Disclosure of Invention
The present application has been made in order to solve the above technical problems. The embodiment of the application provides a motor temperature control method and device and an engineering vehicle, and solves the technical problems.
According to one aspect of the present application, there is provided a motor temperature control method including: acquiring state parameters of the motor; wherein the state parameters include a temperature and an operating parameter of the motor; according to the operation parameters, calculating to obtain the heating power consumption change rate of the motor; and determining an operating parameter of a cooling component of the motor based on the temperature of the motor and the rate of change of heat generation power consumption.
In one embodiment, the operating parameters include torque and rotational speed of the motor; wherein, the obtaining the state parameter of the motor includes: and periodically acquiring the temperature, torque and rotating speed of the motor.
In an embodiment, the calculating the heating power consumption change rate of the motor according to the operation parameter includes: according to the motor torque and the motor rotating speed at the current moment, calculating to obtain the motor heating value at the current moment; and calculating the heating power consumption change rate of the motor according to the heating value of the motor at the last moment and the heating value of the motor at the current moment.
In an embodiment, the calculating the heat productivity of the motor at the current time according to the motor torque and the motor rotation speed at the current time includes: and calculating to obtain the heat productivity of the motor at the current moment according to the motor torque, the motor rotating speed and the motor efficiency at the current moment.
In an embodiment, said determining the operating parameters of the cooling component of the electric machine based on the temperature of the electric machine and the rate of change of the heat generating power consumption comprises: determining the operation parameters of a cooling part of the motor according to the temperature of the motor at the current moment and the heating power consumption change rate; the heating power consumption change rate comprises the ratio of the heating value of the motor at the current moment to the heating value of the motor at the last moment.
In one embodiment, the cooling member includes: a speed-regulating water pump and a speed-regulating fan; wherein, according to the motor temperature at the current moment and the heating power consumption change rate, determining the operation parameters of the cooling component of the motor comprises: and determining the rotating speed of the speed regulating water pump and the rotating speed of the speed regulating fan according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1.
In one embodiment, the speed-regulating water pump comprises a plurality of rotational speed gears, and the speed-regulating fan comprises a plurality of rotational speed gears; wherein, according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1, determining the rotating speed of the speed-adjusting water pump and the rotating speed of the speed-adjusting fan comprises: and determining the rotating speed gear of the speed regulating water pump and the rotating speed gear of the speed regulating fan according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1.
In an embodiment, after the calculating the heating power consumption change rate of the motor according to the operation parameter, the motor temperature control method further includes: filtering the heating power consumption change rate to obtain a filtered heating power consumption change rate; the determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the heating power consumption change rate comprises: and determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the filtered heating power consumption change rate.
According to another aspect of the present application, there is provided a motor temperature control apparatus including: the parameter acquisition module is used for acquiring the state parameters of the motor; wherein the state parameters include a temperature and an operating parameter of the motor; the change calculation module is used for calculating the heating power consumption change rate of the motor according to the operation parameters; and a cooling execution module for determining an operating parameter of a cooling component of the motor according to the temperature of the motor and the heating power consumption change rate.
According to another aspect of the present application, there is provided an engineering vehicle including: a motor; the cooling component is communicated with the heat dissipation water channel of the motor and used for dissipating heat of the motor; and the motor temperature control device is connected with the motor and the cooling component in a communication way.
According to the motor temperature control method and device and the engineering vehicle, the state parameters of the motor are obtained; wherein the state parameters include temperature and operating parameters of the motor; then, according to the operation parameters, calculating to obtain the heating power consumption change rate of the motor; the heating power consumption change rate represents the change trend of the heating value of the motor; finally, according to the temperature and the heating power consumption change rate of the motor, determining the operation parameters of the cooling part of the motor; the method comprises the steps of obtaining the temperature and the operation parameters of the motor at the current moment, calculating the heating power consumption change rate of the motor based on the operation parameters at the current moment, predicting the heating change trend of the motor, namely predicting the heating value increasing speed of the motor, so as to estimate the subsequent heating value of the motor, determining the operation parameters of the cooling part of the motor according to the temperature at the current moment to meet the heat dissipation requirement at the current moment, and simultaneously considering the estimated subsequent heating value of the motor to respond to the heat dissipation requirement of the motor in advance, so that the heat dissipation response speed is accelerated, and the heat dissipation effect of the motor is improved.
Drawings
The foregoing and other objects, features and advantages of the present application will become more apparent from the following more particular description of embodiments of the present application, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.
Fig. 1 is a schematic structural view of a construction vehicle to which the present application is applied.
Fig. 2 is a schematic flow chart of a motor temperature control method according to an exemplary embodiment of the present application.
Fig. 3 is a schematic flow chart of a motor temperature control method according to another exemplary embodiment of the present application.
Fig. 4 is a flow chart of a method for determining an operating parameter of a cooling component according to an exemplary embodiment of the present application.
Fig. 5 is a schematic flow chart of a motor temperature control method according to another exemplary embodiment of the present application.
Fig. 6 is a schematic structural diagram of a motor temperature control device according to an exemplary embodiment of the present application.
Fig. 7 is a schematic structural diagram of a motor temperature control device according to another exemplary embodiment of the present application.
Fig. 8 is a block diagram of an electronic device according to an exemplary embodiment of the present application.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application and not all of the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.
Fig. 1 is a schematic structural view of a construction vehicle to which the present application is applied. As shown in fig. 1, the construction vehicle includes: the motor 1 and the cooling member 2. Wherein the cooling part 2 is communicated with a heat dissipation water channel of the motor 1, and the cooling part 2 is used for dissipating heat of the motor. Specifically, the working vehicle may be a mixer truck, an excavator, or the like, and the motor 1 may be a drive motor or a work motor of the working vehicle.
The motor 1 can produce a large amount of heat in long-time working process, if not in time release these heat, can influence the work of motor 1, can not only lead to motor 1's work efficiency to reduce, but also can cause the part loss serious to influence motor 1's life. Therefore, it is necessary to radiate heat from the motor 1, and the cooling member 2 radiates heat from the motor 1, so that the above-described problem can be effectively solved. In order to control the temperature of the motor 1 within a reasonable range (optimal operating range of the motor), the operation of the cooling member 2 may be controlled by detecting the temperature of the motor 1 and according to the temperature of the motor 1, for example, the operation speed of the cooling member 2 may be increased when the temperature of the motor 1 is high to accelerate heat dissipation, so that the temperature of the motor 1 is rapidly decreased, and the operation speed of the cooling member 2 may be decreased when the temperature of the motor 1 is low to slow down the heat dissipation speed, avoid excessive temperature reduction of the motor 1 and save heat dissipation energy consumption.
However, the temperature of the motor 1 represents the current heat dissipation requirement of the motor 1, and there is a certain time lag from the time the temperature of the motor 1 is obtained to the time the cooling member 2 responds to the action on the motor 1. That is, the heat dissipation requirement of the motor 1 is not immediately reached, but after a certain time, after which the heat dissipation requirement of the motor 1 may be changed again, for example, to a high temperature state or to be already overheated. Therefore, the heating power consumption change rate of the motor 1 is calculated to predict the heating value trend of the motor 1, so that the later heat dissipation requirement of the motor 1 is estimated, and the heat dissipation requirement is responded in advance, so that the heat dissipation requirement of the motor 1 is better met.
Fig. 2 is a schematic flow chart of a motor temperature control method according to an exemplary embodiment of the present application. As shown in fig. 2, the motor temperature control method includes the steps of:
step 210: and acquiring state parameters of the motor.
Wherein the status parameters include temperature and operating parameters of the motor. Specifically, the operating parameters include torque and rotational speed of the motor; the specific implementation manner of step 210 may be: and periodically acquiring the temperature, torque and rotating speed of the motor. By setting a period (for example, 100 milliseconds) to periodically acquire the temperature, torque and rotation speed of the motor, the running state of the cooling component can be periodically adjusted to ensure that the temperature of the motor is controlled in a proper range.
Step 220: and according to the operation parameters, calculating the heating power consumption change rate of the motor.
Wherein, the heating power consumption change rate represents the motor heating value change trend. Specifically, according to the torque and the rotating speed of the motor, the heating power consumption change rate of the motor is calculated, so that the heating power consumption change trend of the motor is predicted.
Step 230: and determining the operation parameters of the cooling component of the motor according to the temperature and the heating power consumption change rate of the motor.
The motor requires a process from an increase (decrease) in heat generation amount to an increase (decrease) in temperature, in which the material of the motor absorbs heat and heat conduction and heat diffusion occur, and there is a certain time difference in the process. In addition, the heat carrier of the cooling component is cooling liquid, and the cooling liquid also needs a process of heat absorption and heat release in the circulation of the cooling system, and the process needs a certain time after each link of the cooling component, so that delay time is caused when the temperature of the motor is controlled.
According to the temperature of the motor and the heating power consumption change rate, the operation parameters of the cooling component are adjusted, namely, according to the operation parameters of the motor, the real-time heating value of the motor is calculated when the motor works, and according to the temperature of the motor at the moment and the heating power consumption change rate of the motor, the working mode of the cooling component is determined, so that the cooling component enters into the working mode aiming at the predicted heat dissipation capacity in advance. Therefore, before the temperature of the motor rises, the response of the cooling system is adopted, the current heat dissipation requirement and the subsequent heat dissipation requirement of the motor are met, the current heat dissipation requirement and the future heat dissipation requirement are considered, the heat dissipation of the motor is responded in advance, and the heat dissipation of the motor is better realized.
According to the motor temperature control method, the state parameters of the motor are obtained; wherein the state parameters include temperature and operating parameters of the motor; then, according to the operation parameters, calculating to obtain the heating power consumption change rate of the motor; the heating power consumption change rate represents the change trend of the heating value of the motor; finally, according to the temperature and the heating power consumption change rate of the motor, determining the operation parameters of the cooling part of the motor; the method comprises the steps of obtaining the temperature and the operation parameters of the motor at the current moment, calculating the heating power consumption change rate of the motor based on the operation parameters at the current moment, predicting the heating change trend of the motor, namely predicting the heating value increasing speed of the motor, so as to estimate the subsequent heating value of the motor, determining the operation parameters of the cooling part of the motor according to the temperature at the current moment to meet the heat dissipation requirement at the current moment, and simultaneously considering the estimated subsequent heating value of the motor to respond to the heat dissipation requirement of the motor in advance, so that the heat dissipation response speed is accelerated, and the heat dissipation effect of the motor is improved.
Fig. 3 is a schematic flow chart of a motor temperature control method according to another exemplary embodiment of the present application. As shown in fig. 3, the step 220 may include:
step 221: and calculating to obtain the heat productivity of the motor at the current moment according to the motor torque and the motor rotating speed at the current moment.
In one embodiment, the specific implementation of step 221 may be: and calculating to obtain the heat productivity of the motor at the current moment according to the motor torque, the motor rotating speed and the motor efficiency at the current moment. Specifically, the heating value of the motor can be calculated by adopting the following formula:
where Q is the heat generation, M is the motor torque, n is the motor speed, and η is the efficiency (i.e., the ratio of the output power to the input power of the motor).
Step 222: and calculating the heating power consumption change rate of the motor according to the heating value of the motor at the last moment and the heating value of the motor at the current moment.
Specifically, the heating power consumption change rate can be calculated by adopting the following formula:
wherein dQ is the change rate of heating power consumption, Q t+Δt For the heat productivity of the motor at the current moment, Q t The heating value of the motor at the last moment. According to the change rate of the heating power consumption, the change direction and the change of the subsequent temperature of the motor can be predicted, so that the motor can respond in advance to better realize heat dissipation of the motor. It should be understood that the above formula is only one way of calculating the heating power change rate, and that other calculation ways can be adopted in the present application, for exampleThe heating power change rate calculation mode is not limited in the application.
In one embodiment, the cooling component may include: a speed-regulating water pump and a speed-regulating fan; the specific implementation manner of the step 230 may be: and determining the rotating speed of the speed-regulating water pump and the rotating speed of the speed-regulating fan according to the motor temperature, the heating power consumption change rate and the size relation of 1 at the current moment.
Specifically, the rotation speeds of the speed regulating water pump and the speed regulating fan are controlled according to the motor temperature at the current moment, for example, if the motor temperature at the current moment is higher, the heat dissipation requirement of the motor is larger, the rotation speeds of the speed regulating water pump and the speed regulating fan should be properly increased at the moment so as to accelerate the heat dissipation of the motor, and if the motor temperature at the current moment is lower, the heat dissipation requirement of the motor is smaller, the rotation speeds of the speed regulating water pump and the speed regulating fan should be properly reduced at the moment so as to avoid excessive motor cooling, and meanwhile, the energy consumption can be saved. The change rate of the heating power consumption is the ratio of the heating power of the motor at the current moment to the heating power of the motor at the last moment, the change direction (increase or decrease) and the change amount of the heating power of the motor can be reflected through the magnitude relation of the change rate of the heating power consumption and 1, for example, when the change rate of the heating power consumption is larger than 1, the heating power of the motor is increased, the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan should be properly increased at the moment so as to accelerate the heat dissipation of the motor, when the change rate of the heating power consumption is far larger than 1, the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan should be greatly increased at the moment, when the change rate of the heating power consumption is smaller than 1, the heating power of the motor is reduced, and when the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan can be properly reduced so as to avoid the excessive cooling of the motor, and meanwhile, the energy consumption can be saved. The motor temperature and the heating power consumption change rate at the current moment are considered simultaneously, so that the heat dissipation requirement at the current moment and the follow-up heat dissipation requirement are considered, and the temperature of the motor is controlled to be in a range suitable for motor operation.
In one embodiment, the speed-regulating water pump comprises a plurality of rotational speed gears, and the speed-regulating fan comprises a plurality of rotational speed gears; taking the speed-adjusting water pump and the speed-adjusting fan as examples and describing that the speed-adjusting water pump and the speed-adjusting fan both comprise 7 gears (the rotation speed of the speed-adjusting water pump and the speed-adjusting fan is sequentially increased from 1 gear to 7 gear), it is to be understood that the speed-adjusting water pump and the speed-adjusting fan are only given as examples, and the speed-adjusting water pump and the speed-adjusting fan are not limited in the speed-adjusting number. As shown in fig. 4, three temperature thresholds T1, T2, and T3 may be set according to the number of gear positions of the speed-adjusting water pump and the speed-adjusting fan, where T1< T2< T3, and the specific implementation manner of the step 230 may be: and determining the rotating speed gear of the speed regulating water pump and the rotating speed gear of the speed regulating fan according to the motor temperature, the heating power consumption change rate and the size relation of 1 at the current moment. Specifically, firstly, the size relation between the motor temperature at the current moment and T1, T2 and T3 is judged to determine which region the rotational speed gear of the speed-adjusting water pump and the rotational speed gear of the speed-adjusting fan belong to, and then the size relation between the heating power consumption change rate and 1 is judged to determine which specific rotational speed gear the speed-adjusting water pump and the speed-adjusting fan correspond to.
As shown in fig. 4, if T is less than or equal to T1, it is indicated that the temperature of the motor at the current time is low; if dQ is less than or equal to 1, the heat productivity of the motor is in a descending or stable state, the future temperature of the motor is predicted to be reduced, at the moment, a measure 1 is adopted, the corresponding speed-regulating water pump and the speed-regulating fan are stopped rotating, if dQ is more than 1, the heat productivity of the motor is in an ascending state, the future temperature of the motor is predicted to be increased, at the moment, a measure 2 is adopted, and the corresponding speed-regulating water pump and the speed-regulating fan are operated in 1 gear. Similarly, states in 6 of dQ less than or equal to 1 and dQ >1 under the conditions that T1< T less than or equal to T2, T2< T less than or equal to T3 and T3< T can be set, and the states correspond to the measures 3-8 respectively, wherein the rotating speed gears of the speed regulating water pump and the speed regulating fan in the measures 3-8 respectively adopt 2 gears to 7 gears, and when the rotating speed gears of the speed regulating water pump and the speed regulating fan both adopt 7 gears (highest gears), a high-temperature alarm is sent.
Fig. 5 is a schematic flow chart of a motor temperature control method according to another exemplary embodiment of the present application. As shown in fig. 5, after step 220, the motor temperature control method may further include:
step 240: and filtering the heating power consumption change rate to obtain the filtered heating power consumption change rate.
Correspondingly, step 230 may include:
step 231: and determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the filtered heating power consumption change rate.
Since the sensor may have an interference signal during the process of collecting data, the collected data needs to be filtered to eliminate the interference. Considering that the motor may have a certain torque abrupt change and other conditions in the operation process, if the initial data such as torque, rotation speed and the like or the heating value are directly filtered, the actual data is likely to be deleted, therefore, the application can ensure that the operation state abrupt change of the motor can be reserved in the heating power change rate by filtering the heating power change rate, so that the operation state change of the motor is better reflected, and the heat dissipation requirement of the motor in the later period can be estimated.
Fig. 6 is a schematic structural diagram of a motor temperature control device according to an exemplary embodiment of the present application. As shown in fig. 6, the motor temperature control device 60 includes: a parameter obtaining module 61, configured to obtain a state parameter of the motor; wherein the state parameters include temperature and operating parameters of the motor; the change calculation module 62 is configured to calculate a change rate of heating power consumption of the motor according to the operation parameter; the heating power consumption change rate represents the change trend of the heating value of the motor; and a cooling execution module 63 for determining an operation parameter of a cooling part of the motor based on the temperature and the heat generation power consumption change rate of the motor.
According to the motor temperature control device, the state parameters of the motor are acquired through the parameter acquisition module 61; wherein the state parameters include temperature and operating parameters of the motor; then, the change calculation module 62 calculates the heating power consumption change rate of the motor according to the operation parameters; the heating power consumption change rate represents the change trend of the heating value of the motor; finally, the cooling execution module 63 determines the operation parameters of the cooling component of the motor according to the temperature and the heating power consumption change rate of the motor; the method comprises the steps of obtaining the temperature and the operation parameters of the motor at the current moment, calculating the heating power consumption change rate of the motor based on the operation parameters at the current moment, predicting the heating change trend of the motor, namely predicting the heating value increasing speed of the motor, so as to estimate the subsequent heating value of the motor, determining the operation parameters of the cooling part of the motor according to the temperature at the current moment to meet the heat dissipation requirement at the current moment, and simultaneously considering the estimated subsequent heating value of the motor to respond to the heat dissipation requirement of the motor in advance, so that the heat dissipation response speed is accelerated, and the heat dissipation effect of the motor is improved.
In one embodiment, the operating parameters include torque and rotational speed of the motor; the above-described parameter acquisition module 61 may be further configured to: and periodically acquiring the temperature, torque and rotating speed of the motor.
Fig. 7 is a schematic structural diagram of a motor temperature control device according to another exemplary embodiment of the present application. As shown in fig. 7, the above-described change calculation module 62 may include: a heat generation amount calculation unit 621 configured to calculate a heat generation amount of the motor at the current time according to the motor torque and the motor rotation speed at the current time; and a change rate calculating unit 622, configured to calculate a change rate of heat dissipation of the motor according to the heat dissipation of the motor at the previous time and the heat dissipation of the motor at the current time.
Specifically, the heating value of the motor can be calculated by the following formula:
wherein Q is heating value, M is motor torque, n is motor rotation speed, and eta is efficiency.
Specifically, the heating power consumption change rate can be calculated by adopting the following formula:
wherein dQ is the change rate of heating power consumption, Q t+Δt For the heat productivity of the motor at the current moment, Q t The heating value of the motor at the last moment. According to the change rate of the heating power consumption, the change direction and the change of the subsequent temperature of the motor can be predicted, so that the motor can respond in advance to better realize heat dissipation of the motor.
In an embodiment, the heating value calculating unit 621 may be further configured to: and calculating to obtain the heat productivity of the motor at the current moment according to the motor torque, the motor rotating speed and the motor efficiency at the current moment.
In one embodiment, the cooling component may include: a speed-regulating water pump and a speed-regulating fan; wherein, the cooling execution module 63 may be further configured to: and determining the rotating speed of the speed-regulating water pump and the rotating speed of the speed-regulating fan according to the motor temperature, the heating power consumption change rate and the size relation of 1 at the current moment.
Specifically, the rotation speeds of the speed regulating water pump and the speed regulating fan are controlled according to the motor temperature at the current moment, for example, if the motor temperature at the current moment is higher, the heat dissipation requirement of the motor is larger, the rotation speeds of the speed regulating water pump and the speed regulating fan should be properly increased at the moment so as to accelerate the heat dissipation of the motor, and if the motor temperature at the current moment is lower, the heat dissipation requirement of the motor is smaller, the rotation speeds of the speed regulating water pump and the speed regulating fan should be properly reduced at the moment so as to avoid excessive motor cooling, and meanwhile, the energy consumption can be saved. The change rate of the heating power consumption is the ratio of the heating power of the motor at the current moment to the heating power of the motor at the last moment, the change direction (increase or decrease) and the change amount of the heating power of the motor can be reflected through the magnitude relation of the change rate of the heating power consumption and 1, for example, when the change rate of the heating power consumption is larger than 1, the heating power of the motor is increased, the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan should be properly increased at the moment so as to accelerate the heat dissipation of the motor, when the change rate of the heating power consumption is far larger than 1, the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan should be greatly increased at the moment, when the change rate of the heating power consumption is smaller than 1, the heating power of the motor is reduced, and when the rotating speeds of the speed-adjusting water pump and the speed-adjusting fan can be properly reduced so as to avoid the excessive cooling of the motor, and meanwhile, the energy consumption can be saved. The motor temperature and the heating power consumption change rate at the current moment are considered simultaneously, so that the heat dissipation requirement at the current moment and the follow-up heat dissipation requirement are considered, and the temperature of the motor is controlled to be in a range suitable for motor operation.
In one embodiment, the speed-regulating water pump comprises a plurality of rotational speed gears, and the speed-regulating fan comprises a plurality of rotational speed gears; wherein, the cooling execution module 63 may be further configured to: and determining the rotating speed gear of the speed regulating water pump and the rotating speed gear of the speed regulating fan according to the motor temperature, the heating power consumption change rate and the size relation of 1 at the current moment.
In one embodiment, as shown in fig. 7, the motor temperature control device 60 may further include: the filtering module 64 is configured to perform filtering processing on the heating power consumption change rate, so as to obtain a filtered heating power consumption change rate. Correspondingly, the cooling execution module 63 may be further configured to: and determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the filtered heating power consumption change rate.
Next, an electronic device according to an embodiment of the present application is described with reference to fig. 8. The electronic device may be either or both of the first device and the second device, or a stand-alone device independent thereof, which may communicate with the first device and the second device to receive the acquired input signals therefrom.
Fig. 8 illustrates a block diagram of an electronic device according to an embodiment of the present application.
As shown in fig. 8, the electronic device 10 includes one or more processors 11 and a memory 12.
The processor 11 may be a Central Processing Unit (CPU) or other form of processing unit having data processing and/or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.
Memory 12 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, random Access Memory (RAM) and/or cache memory (cache), and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like. One or more computer program instructions may be stored on the computer readable storage medium that can be executed by the processor 11 to implement the methods of the various embodiments of the present application described above and/or other desired functions. Various contents such as an input signal, a signal component, a noise component, and the like may also be stored in the computer-readable storage medium.
In one example, the electronic device 10 may further include: an input device 13 and an output device 14, which are interconnected by a bus system and/or other forms of connection mechanisms (not shown).
When the electronic device is a stand-alone device, the input means 13 may be a communication network connector for receiving the acquired input signals from the first device and the second device.
In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.
The output device 14 may output various information to the outside, including the determined distance information, direction information, and the like. The output means 14 may include, for example, a display, speakers, a printer, and a communication network and remote output devices connected thereto, etc.
Of course, only some of the components of the electronic device 10 that are relevant to the present application are shown in fig. 8 for simplicity, components such as buses, input/output interfaces, etc. are omitted. In addition, the electronic device 10 may include any other suitable components depending on the particular application.
The computer program product may write program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server.
The computer readable storage medium may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.
Claims (8)
1. A motor temperature control method, comprising:
acquiring state parameters of the motor; wherein the state parameters include a temperature and an operating parameter of the motor, the operating parameter including a torque and a rotational speed of the motor;
according to the motor torque and the motor rotating speed at the current moment, calculating to obtain the motor heating value at the current moment; and
calculating to obtain a heating power consumption change rate of the motor according to the heating value of the motor at the previous moment and the heating value of the motor at the current moment, wherein the heating power consumption change rate comprises the ratio of the heating value of the motor at the current moment to the heating value of the motor at the previous moment; and
and determining the operation parameters of the cooling component of the motor according to the temperature of the motor at the current moment and the heating power consumption change rate.
2. The motor temperature control method according to claim 1, wherein the acquiring the state parameter of the motor includes:
and periodically acquiring the temperature, torque and rotating speed of the motor.
3. The motor temperature control method according to claim 1, wherein calculating the motor heating value at the present moment according to the motor torque and the motor rotation speed at the present moment includes:
and calculating to obtain the heat productivity of the motor at the current moment according to the motor torque, the motor rotating speed and the motor efficiency at the current moment.
4. The motor temperature control method according to claim 1, characterized in that the cooling means includes: a speed-regulating water pump and a speed-regulating fan; wherein, according to the motor temperature at the current moment and the heating power consumption change rate, determining the operation parameters of the cooling component of the motor comprises:
and determining the rotating speed of the speed regulating water pump and the rotating speed of the speed regulating fan according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1.
5. The motor temperature control method of claim 4 wherein the speed-regulated water pump includes a plurality of rotational speed steps and the speed-regulated fan includes a plurality of rotational speed steps; wherein, according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1, determining the rotating speed of the speed-adjusting water pump and the rotating speed of the speed-adjusting fan comprises:
and determining the rotating speed gear of the speed regulating water pump and the rotating speed gear of the speed regulating fan according to the motor temperature at the current moment, the heating power consumption change rate and the magnitude relation of 1.
6. The motor temperature control method according to claim 1, characterized in that after the calculation of the heating power consumption rate of the motor from the operation parameters, the motor temperature control method further comprises:
filtering the heating power consumption change rate to obtain a filtered heating power consumption change rate;
the determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the heating power consumption change rate comprises:
and determining the operation parameters of the cooling component of the motor according to the temperature of the motor and the filtered heating power consumption change rate.
7. A motor temperature control apparatus, comprising:
the parameter acquisition module is used for acquiring the state parameters of the motor; wherein the state parameters include a temperature and an operating parameter of the motor, the operating parameter including a torque and a rotational speed of the motor;
the change calculation module is used for calculating and obtaining the heat productivity of the motor at the current moment according to the motor torque and the motor rotating speed at the current moment; and
calculating to obtain a heating power consumption change rate of the motor according to the heating value of the motor at the previous moment and the heating value of the motor at the current moment, wherein the heating power consumption change rate comprises the ratio of the heating value of the motor at the current moment to the heating value of the motor at the previous moment; and
and the cooling execution module is used for determining the operation parameters of the cooling component of the motor according to the temperature of the motor at the current moment and the heating power consumption change rate.
8. An engineering vehicle, comprising:
a motor;
the cooling component is communicated with the heat dissipation water channel of the motor and used for dissipating heat of the motor; and
a motor temperature control device as set forth in claim 7 in communication with said motor and said cooling member.
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