Water-cooled backpack variable frequency integrated motor and control method thereof

Abstract

The present application relates to the technical field of motor, especially to a water-cooled backpack variable frequency integrated motor and a control method thereof, specifically comprising a motor body, a frequency converter is fixedly connected to the front surface of the motor body, a high-voltage transformer box is fixedly connected to the left side of the upper surface of the motor body, a junction box is fixedly connected to the side of the high-voltage transformer box on the upper surface of the motor body, and a cooling pipe is arranged on the upper surface of the motor body; the motor body and the frequency converter are cooled by water cooling, and the frequency converter and the water pump are intelligently controlled, that is, the motor operating frequency is adjusted according to the load condition to reduce energy consumption and ensure stable operation of the motor; the working conditions of the frequency converter and the water pump are analyzed by means of information progression, it is judged whether the two can continuously and stably cooperate in cooling, and then effective temperature control is realized with the lowest heat dissipation energy consumption, avoiding energy waste or performance loss caused by "excessive heat dissipation" or "insufficient heat dissipation".

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a water-cooled backpack frequency converter integrated motor and its control method. Background Technology

[0002] With the widespread use of portable electric equipment in outdoor operations, disaster relief and rescue, and other fields, the requirements for its power source - motor - are also getting higher and higher. The traditional structure of separating the motor and frequency converter is bulky and has complicated wiring, making it inconvenient to carry and install. Although there are some integrated motors, the heat dissipation problem is more prominent. Especially when running under high load for a long time, the heat generated by the motor body and frequency converter module is difficult to dissipate effectively, which will lead to reduced motor efficiency, shortened lifespan, or even failure. In addition, traditional portable motor control methods are relatively simple, only able to achieve basic start-stop and speed regulation, and cannot adjust operating parameters in real time according to the temperature, load and other operating conditions of the motor and frequency converter module, resulting in high energy consumption and poor stability of motor operation. Therefore, a solution is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a water-cooled backpack frequency conversion integrated motor and its control method to solve the above-mentioned technical defects.

[0004] The objective of this invention can be achieved through the following technical solution: a water-cooled backpack frequency conversion integrated motor, including a motor body, a frequency converter fixedly connected to the front surface of the motor body, a high-voltage transformer box fixedly connected to the left side of the upper surface of the motor body, and a junction box fixedly connected to the side of the high-voltage transformer box on the upper surface of the motor body, a cooling pipe provided on the upper surface of the motor body, and a cooling water channel opened inside the motor body.

[0005] This invention also proposes a control method for a water-cooled backpack inverter motor, which is applied to the aforementioned water-cooled backpack inverter motor and includes the following steps: Step 1: Receive the motor operation command input by the user, control the frequency converter to start the motor body, and make the motor body run at the initial frequency; Step 2: Collect the operating data of the motor body and perform evaluation and analysis along with the data time dimension alignment. If a valid signal is obtained, proceed to Step 3; if a defect signal is obtained, output feedback. Step 3: Based on the information feedback, the temperature control processing feedback analysis is performed to distinguish between the obtained average variable frequency temperature and the average operating temperature, and the obtained normal signal or temperature pipe signal is output and fed back. Step 4: Intelligent frequency control process based on normal signal conditions; Step 5: When the temperature pipe signal is generated, control the frequency converter to reduce the motor's operating frequency to the preset operating frequency, and at the same time perform dynamic cooling management of the water pump, outputting the obtained cleaning signal or cooling signal as feedback. Step Six: Conduct pre-temperature control condition assessment and collaborative energy-saving analysis through information progression, and output the obtained low-consumption cooling signal or collaborative defect signal for feedback.

[0006] Preferably, the data time dimension alignment evaluation and analysis process is as follows: The operation data of the motor body is collected by multiple sensors, the collected operation data is preprocessed, the sampling time axis of the operation data is set, and the operation data collected by multiple sensors is resampled to the sampling frequency by linear interpolation based on the sampling time axis. The maximum and minimum operating temperature values ​​are obtained from the operating data collected by multiple sensors, and the difference between the maximum and minimum operating temperature values ​​is set as the temperature span value. The environmental information of the working area where the motor body is located is obtained, and the environmental information is input into the pre-set environmental interference model to obtain the temperature deviation value output by the environmental interference model. The difference between the temperature span value and the temperature deviation value is obtained, and the difference between the temperature span value and the temperature deviation value is set as the interference deviation degree. The interference deviation degree is judged to see if it exceeds the preset interference deviation degree threshold. If it does, a defect signal is generated; otherwise, a valid signal is generated.

[0007] Preferably, the temperature control processing feedback analysis process is as follows: the running period of the motor body is collected, and the running period of the motor body is set as a time threshold. The average frequency conversion temperature of the inverter and the average running temperature of the motor body in the running data are obtained within the time threshold. The average frequency conversion temperature and the average running temperature are processed to obtain a normal signal or a temperature pipe signal.

[0008] Preferably, when a normal signal is generated, the operating power P of the motor body in the operating data is obtained, and the operating power P is processed to obtain a falling signal, a normal signal, or a rising signal.

[0009] Preferably, the dynamic cooling management process is as follows: The current water cooling flow rate of the water pump within the time threshold is obtained, and the set water cooling flow rate corresponding to the generated temperature pipe signal is also obtained. The current speed of the water pump within the time threshold is obtained, and a pre-set lookup table of speed and water cooling flow rate is obtained. The target speed of the water pump is obtained based on the set water cooling flow rate. The system obtains the actual water cooling flow rate when the water pump reaches the target speed, and sets the value obtained by subtracting the current water cooling flow rate from the actual water cooling flow rate as the actual amplified flow rate. The value obtained by subtracting the current water cooling flow rate from the set water cooling flow rate is set as the standard amplified flow rate. The ratio between the actual amplified flow rate and the standard amplified flow rate is set as the speed regulation compliance rate. The system then judges whether the speed regulation compliance rate is greater than or equal to the preset speed regulation compliance rate threshold. If it is, a qualified signal is generated; otherwise, a cooling obstruction signal is generated.

[0010] Preferably, when a cooling obstruction signal is generated, the following steps are taken: n historical speed regulation compliance rates are obtained, where n is a natural number greater than zero. A speed regulation compliance rate change curve is constructed based on the time series, and the difference between the maximum peak value and the minimum trough value in the speed regulation compliance rate change curve is obtained. The difference between the maximum peak value and the minimum trough value is set as the obstruction level. The obstruction level is then judged to determine whether it exceeds a preset obstruction level threshold. If it does, a cleaning signal is generated; otherwise, a cooling signal is generated.

[0011] Preferably, the precondition evaluation and collaborative energy-saving analysis process for temperature control is as follows: Obtain the operating condition information of the frequency converter and the status information of the water pump within the time threshold; The operating condition information and status information are respectively input into the pre-set health assessment model to obtain the output operating condition status score of the frequency converter and the health status score of the water pump. The sum of the operating condition status score and the health status score is set as the collaborative score. The collaborative score is judged to see if it exceeds the preset collaborative score threshold. If it does, a stable signal is generated; otherwise, an abnormal signal is generated. When a stable signal is generated, the heat dissipation energy efficiency ratio and dynamic adjustment response within the time threshold are obtained, and the heat dissipation energy efficiency ratio and dynamic adjustment response are discriminated to obtain a low-power cooling signal or a cooperative defect signal.

[0012] The beneficial effects of this invention are as follows: (1) The present invention uses water cooling to dissipate heat from the motor body and the frequency converter. Compared with traditional air cooling, the heat dissipation efficiency is higher, effectively meeting the heat dissipation requirements during high-power operation and ensuring the normal operating temperature of the motor and the frequency converter. At the same time, by intelligently controlling the frequency converter and the water pump, the operating frequency of the motor is adjusted according to the load to reduce energy consumption, ensure stable operation of the motor, and extend its service life. It also realizes intelligent management of the water pump speed and water cooling, as well as cleaning of components such as the water pump to ensure the water cooling effect.

[0013] (2) The present invention also analyzes the operating conditions of the frequency converter and the water pump through information progression, and judges whether the two can continuously and stably cooperate to cool down, so as to manage the frequency converter and the water pump, ensure the safety and efficiency of their operation, and rationally manage the cooperative heat dissipation of the frequency converter and the water pump, thereby achieving effective temperature control with the lowest heat dissipation energy consumption, and avoiding energy waste or performance loss caused by "excessive heat dissipation" or "insufficient heat dissipation". Attached Figure Description

[0014] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a three-dimensional view of the structure of the present invention; Figure 2 This is a schematic diagram of the cooling water channel structure of the present invention; Figure 3 This is a schematic diagram of the high-voltage transformer box of the present invention; Figure 4 This is a reference diagram of the method of the present invention; Figure 5 This is a partial analysis reference diagram of the present invention.

[0015] Legend: 1. Motor body; 2. Frequency converter; 3. High voltage transformer box; 4. Junction box; 5. Cooling pipe; 6. Cooling water channel. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments; Example 1: Please refer to Figures 1 to 5As shown, the present invention is a water-cooled backpack frequency converter integrated motor, including a motor body 1, a frequency converter 2 fixedly connected to the front surface of the motor body 1, a high-voltage transformer box 3 fixedly connected to the left side of the upper surface of the motor body 1, and a junction box 4 fixedly connected to the side of the high-voltage transformer box 3 on the upper surface of the motor body 1, a cooling pipe 5 provided on the upper surface of the motor body 1, and a cooling water channel 6 opened inside the motor body 1. The front surface (the contact surface where the frequency converter 2 is connected to the motor body 1), the rear surface (the contact surface where the high-voltage transformer box 3 and the junction box 4 are connected to the motor body 1), the upper surface, and the lower surface of the motor body 1 are all provided with cooling water channels 6. The present invention also proposes a control method for a water-cooled backpack frequency converter integrated motor, comprising the following steps: Step 1: Receive the motor operation command input by the user, control the frequency converter 2 to start the motor body 1, and make the motor body 1 run at the initial frequency; Step 2: Collect the operating data of motor body 1 and perform evaluation and analysis along with the data time dimension alignment. If a valid signal is obtained, proceed to step 3. If a defect signal is obtained, output feedback. Step 3: Based on the information feedback, the temperature control processing feedback analysis is performed to distinguish between the obtained average variable frequency temperature and the average operating temperature, and the obtained normal signal or temperature pipe signal is output and fed back. Step 4: Intelligent frequency control process based on normal signal conditions; Step 5: When the temperature pipe signal is generated, control the frequency converter 2 to reduce the motor's operating frequency to the preset operating frequency, and at the same time perform dynamic cooling management of the water pump, outputting the obtained cleaning signal or cooling signal as feedback. Step Six: Conduct pre-temperature control condition assessment and collaborative energy-saving analysis through information progression, and output the obtained low-consumption cooling signal or collaborative defect signal for feedback; The specific data time dimension alignment evaluation and analysis process is as follows: The operating data of the motor body 1 is collected by multiple sensors, including operating temperature value, operating voltage value, etc. The multiple sensors include temperature sensor, voltage sensor, etc. The collected operational data is preprocessed, including cleaning and noise reduction. Set the sampling time axis for the running data, and use the sampling time axis as a reference to resample the running data collected by multiple sensors to the sampling frequency using linear interpolation. The maximum and minimum operating temperature values ​​are obtained from the operating data collected by multiple sensors, and the difference between the maximum and minimum operating temperature values ​​is set as the temperature span value. The environmental information of the working area where the motor body 1 is located is obtained. The environmental information includes the ambient temperature value, ambient humidity value, etc. The environmental information is input into the pre-set environmental interference model to obtain the temperature deviation value output by the environmental interference model. The difference between the temperature span value and the temperature deviation value is obtained and set as the interference deviation degree. The system then judges whether the interference deviation degree exceeds the preset interference deviation degree threshold. If it does, a defect signal is generated; otherwise, a valid signal is generated. The execution module responds to the defect signal or the valid signal and immediately performs the preset early warning operation corresponding to the defect signal or the valid signal. This allows for targeted management of the defective sensor to ensure the validity of the collected data.

[0018] Example 2: When a valid signal is generated, the collected operating data of the motor body 1 is subjected to temperature control processing and feedback analysis. The specific temperature control processing and feedback analysis process is as follows: The running period of motor body 1 is collected and set as a time threshold. The average frequency conversion temperature of inverter 2 and the average running temperature of motor body 1 in the running data are obtained within the time threshold. The average frequency conversion temperature and the average running temperature are judged. If the average running temperature is less than the preset average running temperature threshold and the average frequency conversion temperature is less than the preset average frequency conversion temperature threshold, a normal signal is generated. If the average running temperature is greater than or equal to the preset average running temperature threshold, or the average frequency conversion temperature is greater than or equal to the preset average frequency conversion temperature threshold, a temperature tube signal is generated. When a normal signal is generated, the operating power P of the motor body 1 in the operating data is obtained and the operating power P is judged. If the operating power P is less than the minimum value in the preset operating power range, a drop signal is generated. The execution module responds to the drop signal and immediately executes the drop signal to reduce the operating frequency of the motor body 1 in order to reduce energy consumption. If the operating power P is within the preset operating power range, a normal signal is generated. The execution module responds to the normal signal and immediately executes the normal signal to maintain the normal operation of the water pump and ensure basic heat dissipation. If the operating power P is greater than the maximum value in the preset operating power range, a rising signal is generated. The execution module responds to the rising signal and immediately executes the rising signal to increase the operating frequency of the motor body 1 to meet the load requirements. This invention uses a temperature sensor to monitor the temperature of the motor and the frequency converter module in real time. Combined with the motor's operating parameters, the controller performs intelligent control of the frequency converter module and the water pump. It can adjust the motor's operating frequency according to the load to reduce energy consumption, and take timely measures to enhance heat dissipation and reduce frequency when the temperature is too high, so as to ensure stable operation of the motor and extend its service life. When a temperature pipe signal is generated, the inverter 2 is controlled to reduce the motor's operating frequency to a preset operating frequency, while the water pump is dynamically cooled. The specific dynamic cooling management process is as follows: The current water cooling flow rate of the water pump within the time threshold is obtained, and the set water cooling flow rate corresponding to the generated temperature pipe signal is also obtained. The current speed of the water pump within the time threshold is obtained, and a pre-set lookup table of speed and water cooling flow rate is obtained. The target speed of the water pump is obtained based on the set water cooling flow rate. The actual water cooling flow rate when the water pump reaches the target speed is obtained, and the value obtained by subtracting the current water cooling flow rate from the actual water cooling flow rate is set as the actual amplified flow rate. The value obtained by subtracting the current water cooling flow rate from the set water cooling flow rate is set as the standard amplified flow rate. The ratio between the actual amplified flow rate and the standard amplified flow rate is set as the speed regulation compliance rate. The speed regulation compliance rate is judged to be greater than or equal to the preset speed regulation compliance rate threshold. If it is, a qualified signal is generated; otherwise, a cooling obstruction signal is generated. When a cooling obstruction signal is generated, the system acquires n historical speed regulation compliance rates, where n is a natural number greater than zero. Based on the time series, it constructs a curve showing the change in the speed regulation compliance rate and obtains the difference between the maximum peak value and the minimum trough value in the curve. This difference is set as the degree of obstruction. The system then determines whether the degree of obstruction exceeds a preset threshold. If it does, a cleaning signal is generated; otherwise, a cooling signal is generated. The execution module responds to either the cleaning or cooling signal and immediately performs the preset warning operation corresponding to the signal. This allows the system to clean components such as the water pump based on the feedback information, ensuring effective water cooling.

[0019] Example 3: When a qualified signal is generated, the preconditions for temperature control and the collaborative energy-saving analysis are performed through a progressive information approach. The specific preconditions for temperature control and the collaborative energy-saving analysis process are as follows: The operating condition information of the frequency converter 2 and the status information of the water pump are obtained within the time threshold. The operating condition information includes the response index (the average response time corresponding to the frequency adjustment of the motor body 1) and the output frequency fluctuation range, etc., and the status information includes the operating temperature and amplitude range, etc. The operating condition information and status information are respectively input into the pre-set health assessment model to obtain the output operating condition status score of inverter 2 and the health status score of water pump. The sum of the operating condition status score and the health status score is set as the collaborative score. The collaborative score is judged to see if it exceeds the preset collaborative score threshold. If it does, a stable signal is generated; otherwise, an abnormal signal is generated. The execution module executes the preset early warning operation corresponding to the abnormal signal to manage inverter 2 and water pump and ensure their operational safety and collaborative efficiency. When a stable signal is generated, the heat dissipation energy efficiency ratio (the ratio between actual heat dissipation and total heat dissipation energy consumption) and dynamic adjustment response (the ratio between the rate of change of heat dissipation energy consumption and the rate of change of heat dissipation demand) within the time threshold are obtained, and the heat dissipation energy efficiency ratio and dynamic adjustment response are processed for discrimination. If the heat dissipation energy efficiency ratio is greater than the preset heat dissipation energy efficiency ratio threshold, and the dynamic adjustment response is within the preset dynamic adjustment response range, then a low-power cooling signal is generated. If the heat dissipation energy efficiency ratio is less than or equal to the preset heat dissipation energy efficiency ratio threshold, or the dynamic adjustment response degree is not within the preset dynamic adjustment response degree range, a collaborative defect signal is generated. The execution module executes the low-power cooling signal or the preset early warning operation corresponding to the collaborative defect signal in order to rationally manage collaborative heat dissipation, thereby achieving effective temperature control with the lowest heat dissipation energy consumption and avoiding energy waste or performance loss caused by "overheating" or "insufficient heat dissipation". In summary, water cooling is used to dissipate heat from the motor body 1 and the frequency converter 2. Compared with traditional air cooling, water cooling is more efficient and can effectively meet the heat dissipation requirements during high-power operation, ensuring the normal operating temperature of the motor and the frequency converter 2. At the same time, intelligent control of the frequency converter 2 and the water pump is used to adjust the motor operating frequency according to the load to reduce energy consumption, ensure stable motor operation, and extend service life. Simultaneously, it achieves intelligent management of water pump speed and water cooling, as well as cleaning of components such as water pumps to ensure water cooling heat dissipation effect. By analyzing the operating conditions of inverter 2 and water pump through information progression, it determines whether the two can continuously and stably cooperate in cooling, so as to manage inverter 2 and water pump to ensure the operational safety and cooperative efficiency of both. At the same time, it rationally manages the cooperative heat dissipation of inverter 2 and water pump, thereby achieving effective temperature control with the lowest heat dissipation energy consumption and avoiding energy waste or performance loss caused by "overheating" or "underheating".

[0020] The threshold is set for comparative analysis of results to determine whether they are good or bad. The value of the threshold is determined by a combination of large-scale model analysis of sample data and human experience. It can also be adjusted appropriately based on seasonal or common-sense influencing factors. The size of the coefficient is a specific value obtained by quantifying each parameter to facilitate subsequent comparison. The size of the coefficient depends on the amount of sample data and the corresponding operating coefficient initially set by those skilled in the art for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water-cooled backpack inverter integrated motor, comprising a motor body (1), characterized in that, A frequency converter (2) is fixedly connected to the front surface of the motor body (1), a high voltage transformer box (3) is fixedly connected to the left side of the upper surface of the motor body (1), and a junction box (4) is fixedly connected to the side of the high voltage transformer box (3) on the upper surface of the motor body (1). A cooling pipe (5) is provided on the upper surface of the motor body (1), and a cooling water channel (6) is opened inside the motor body (1).

2. A control method for a water-cooled backpack variable frequency integrated motor, wherein the control method is applied to the water-cooled backpack variable frequency integrated motor as described in claim 1, characterized in that, Includes the following steps: Step 1: Receive the motor operation command input by the user, control the frequency converter (2) to start the motor body (1), so that the motor body (1) runs at the initial frequency; Step 2: Collect the operating data of the motor body (1) and perform data time dimension alignment evaluation and analysis. If a valid signal is obtained, proceed to step 3. If a defect signal is obtained, output feedback. Step 3: Based on the information feedback, the temperature control processing feedback analysis is performed to distinguish between the obtained average variable frequency temperature and the average operating temperature, and the obtained normal signal or temperature pipe signal is output and fed back. Step 4: Intelligent frequency control process based on normal signal conditions; Step 5: When the temperature pipe signal is generated, control the frequency converter (2) to reduce the motor's operating frequency to the preset operating frequency, and at the same time perform dynamic cooling management on the water pump, outputting the obtained cleaning signal or cooling signal for feedback; Step Six: Conduct pre-temperature control condition assessment and collaborative energy-saving analysis through information progression, and output the obtained low-consumption cooling signal or collaborative defect signal for feedback.

3. The control method for a water-cooled backpack variable frequency integrated motor according to claim 2, characterized in that, The data time dimension alignment evaluation and analysis process is as follows: The operating data of the motor body (1) is collected by multiple sensors. The collected operating data is preprocessed and the sampling time axis of the operating data is set. Based on the sampling time axis, the operating data collected by multiple sensors is resampled to the sampling frequency by linear interpolation. The maximum and minimum operating temperature values ​​are obtained from the operating data collected by multiple sensors, and the difference between the maximum and minimum operating temperature values ​​is set as the temperature span value. The environmental information of the working area where the motor body (1) is located is obtained, and the environmental information is input into the pre-set environmental interference model to obtain the temperature deviation value output by the environmental interference model. The difference between the temperature span value and the temperature deviation value is obtained, and the difference between the temperature span value and the temperature deviation value is set as the interference deviation degree. The interference deviation degree is judged to see if it exceeds the preset interference deviation degree threshold. If it does, a defect signal is generated; otherwise, a valid signal is generated.

4. The control method for a water-cooled backpack variable frequency integrated motor according to claim 2, characterized in that, The temperature control processing feedback analysis process is as follows: the running time of the motor body (1) is collected, and the running time of the motor body (1) is set as the time threshold. The average frequency conversion temperature of the inverter (2) and the average running temperature of the motor body (1) in the running data are obtained within the time threshold. The average frequency conversion temperature and the average running temperature are processed to obtain the normal signal or the temperature pipe signal.

5. The control method for a water-cooled backpack variable frequency integrated motor according to claim 4, characterized in that, When a normal signal is generated, the operating power P of the motor body (1) in the operating data is obtained, and the operating power P is processed to obtain a falling signal, a normal signal, or a rising signal.

6. The control method for a water-cooled backpack variable frequency integrated motor according to claim 2, characterized in that, The dynamic cooling management process is as follows: The current water cooling flow rate of the water pump within the time threshold is obtained, and the set water cooling flow rate corresponding to the generated temperature pipe signal is also obtained. The current speed of the water pump within the time threshold is obtained, and a pre-set lookup table of speed and water cooling flow rate is obtained. The target speed of the water pump is obtained based on the set water cooling flow rate. The system obtains the actual water cooling flow rate when the water pump reaches the target speed, and sets the value obtained by subtracting the current water cooling flow rate from the actual water cooling flow rate as the actual amplified flow rate. The value obtained by subtracting the current water cooling flow rate from the set water cooling flow rate is set as the standard amplified flow rate. The ratio between the actual amplified flow rate and the standard amplified flow rate is set as the speed regulation compliance rate. The system then judges whether the speed regulation compliance rate is greater than or equal to the preset speed regulation compliance rate threshold. If it is, a qualified signal is generated; otherwise, a cooling obstruction signal is generated.

7. The control method for a water-cooled backpack variable frequency integrated motor according to claim 2, characterized in that, When a cooling obstruction signal is generated, the historical speed regulation compliance rates of n (where n is a natural number greater than zero) are obtained. A change curve of the speed regulation compliance rate is constructed based on the time series. The difference between the maximum peak value and the minimum trough value in the change curve is obtained, and the difference between the maximum peak value and the minimum trough value is set as the obstruction degree. The obstruction degree is judged to see if it exceeds the preset obstruction degree threshold. If it does, a cleaning signal is generated; otherwise, a cooling signal is generated.

8. The control method for a water-cooled backpack variable frequency integrated motor according to claim 2, characterized in that, The process of pre-temperature control condition evaluation and collaborative energy-saving analysis is as follows: Obtain the operating condition information of the frequency converter (2) and the status information of the water pump within the time threshold; Input the operating condition information and status information into the pre-set health assessment model to obtain the operating condition status score of the inverter (2) and the health status score of the water pump. Set the sum of the operating condition status score and the health status score as the collaborative score. Then, determine whether the collaborative score exceeds the preset collaborative score threshold. If yes, generate a stable signal; otherwise, generate an abnormal signal. When a stable signal is generated, the heat dissipation energy efficiency ratio and dynamic adjustment response within the time threshold are obtained, and the heat dissipation energy efficiency ratio and dynamic adjustment response are discriminated to obtain a low-power cooling signal or a cooperative defect signal.

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