Method and device for detecting stall of warm air pump, readable storage medium and vehicle

Abstract

The application provides a kind of warm air pump stall detection method and device, readable storage medium, vehicle, and the warm air pump described in the application is the warm air pump in the heating circuit of air conditioning system on vehicle, the stall detection method of the warm air pump includes: when detecting that heater stops heating, the outlet water temperature of heater is obtained;Wherein, heater is the heater in the heating circuit of air conditioning system;Whether the outlet water temperature is abnormal is judged, and whether the stall of warm air pump occurs is judged according to the abnormal information of outlet water temperature;Wherein, outlet water temperature is abnormal, and outlet water temperature changes with preset abnormal change trend.This application can find the stall trend of water pump earlier, reduce the delay of warm air pump stall detection, facilitate earlier fault warning and subsequent maintenance work.

Description

Technical Field

[0001] This invention belongs to the field of equipment testing technology, and more specifically, relates to a method and device for detecting stall in a heater water pump, a readable storage medium, and a vehicle. Background Technology

[0002] The heater pump is the only power source for the heating circuit of the vehicle's air conditioning system. If the heater pump stalls, the entire heating system will fail. Therefore, it is crucial to check the heater pump for stall.

[0003] Existing technologies typically detect whether a heater pump is stalled based on the pump's motor current or pump speed. However, by the time such detection methods detect stalling, the heater pump has usually been stalled for a considerable period of time. In other words, existing methods have a high delay when detecting stalling in heater pumps.

[0004] Therefore, the present invention aims to provide a means to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a method and device for detecting stall in a heater pump, a readable storage medium, and a vehicle, so as to solve the problem of high delay in detecting stall in existing heater pumps.

[0006] A first aspect of the present invention provides a method for detecting a stalled heater pump, wherein the heater pump is a heater pump in the heating circuit of a vehicle's air conditioning system, and the stall detection method includes:

[0007] When the heater stops heating, the outlet water temperature of the heater is obtained; wherein, the heater is the heater in the heating circuit of the air conditioning system;

[0008] Determine whether the water temperature at the outlet is abnormal, and determine whether the warm air pump is blocked based on the abnormal water temperature information at the outlet.

[0009] Among them, abnormal outlet water temperature refers to the outlet water temperature changing in a preset abnormal trend.

[0010] In one possible implementation, detecting whether the heater has stopped heating includes:

[0011] After detecting that the heater is turned on, the current of the heater is acquired;

[0012] When the current of the heater is detected to be no greater than a preset current, the heater is determined to stop heating.

[0013] In one possible implementation, before determining whether the warm air pump has stalled based on the abnormal water temperature information at the outlet, the stall detection method further includes:

[0014] Obtain the engine coolant temperature of the vehicle;

[0015] Based on the relative magnitude of the engine coolant temperature and the outlet coolant temperature, determine whether the engine coolant temperature will affect the stall detection of the heater pump;

[0016] Accordingly, determining whether the heating water pump is blocked based on the abnormal information of the outlet water temperature includes:

[0017] If it is determined that the engine coolant temperature will not affect the detection of the heater pump stall, then the abnormal information of the outlet water temperature is used to determine whether the heater pump has stalled.

[0018] In one possible implementation, the step of determining whether the engine coolant temperature will affect the stall detection of the heater pump based on the relative magnitude of the engine coolant temperature and the outlet coolant temperature includes:

[0019] If the engine coolant temperature is higher than the outlet coolant temperature, then it is determined that the engine coolant temperature will not affect the stall detection of the heater pump.

[0020] In one possible implementation, the abnormal information includes the cumulative number of times the outlet water temperature is abnormal; the step of determining whether the heater pump is blocked based on the abnormal outlet water temperature information includes:

[0021] If the cumulative number of abnormal water temperatures at the outlet exceeds a preset number, it is determined that the warm air pump has become blocked.

[0022] In one possible implementation, the preset abnormal change trend includes:

[0023] The water temperature at the outlet rises, and within a preset time, the water temperature at the outlet reaches a preset temperature.

[0024] In one possible implementation, the stall detection method further includes:

[0025] If it is determined that the heater pump is stalled, a fault message will be sent to the vehicle infotainment system and / or the vehicle user's mobile terminal.

[0026] A second aspect of the present invention provides a stall detection device for a heater pump, wherein the heater pump is a heater pump in the heating circuit of a vehicle's air conditioning system, and the stall detection device includes:

[0027] The data acquisition module is used to acquire the outlet water temperature of the heater when it is detected that the heater has stopped heating; wherein the heater is the heater in the heating circuit of the air conditioning system;

[0028] The stall detection module is used to determine whether the outlet water temperature is abnormal, and to determine whether the warm air water pump has stalled based on the abnormal outlet water temperature information; wherein, abnormal outlet water temperature refers to the outlet water temperature changing in a preset abnormal trend.

[0029] A third aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described method for detecting stall in a warm air water pump.

[0030] In a fourth aspect, the present invention provides a TSP platform, the TSP platform including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described method for detecting stall of a warm air water pump.

[0031] The beneficial effects of the heater pump stall detection method and device, readable storage medium, and vehicle provided in this invention are as follows:

[0032] Unlike existing technologies that detect pump stalling based on motor current or pump speed, the inventors of this application have creatively proposed a stall detection method based on the heater outlet water temperature after analyzing various parameters during pump operation. Based on this data analysis, the inventors discovered that when a pump stalls, this change is reflected early in the heater outlet water temperature when heating stops. Therefore, this embodiment of the invention acquires the heater outlet water temperature when heating is detected to have stopped, and determines whether the pump has stalled by observing the trend of this temperature change. This solution allows for earlier detection of pump stalling trends, reducing the delay in pump stall detection and facilitating earlier fault warnings and subsequent maintenance.

[0033] In summary, the embodiments of the present invention creatively select the outlet water temperature of the heater when heating stops as the criterion for detecting the blockage of the warm air water pump, thereby effectively solving the problems of the prior art. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic flowchart of a stall detection method for a heating water pump provided in an embodiment of the present invention;

[0036] Figure 2 A schematic flowchart of a stall detection method for a heating water pump provided in another embodiment of the present invention;

[0037] Figure 3 This is a structural block diagram of a stall detection device for a warm air water pump provided in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the preceding and following steps of a stall detection method provided in an embodiment of the present invention;

[0039] Figure 5 This is a schematic block diagram of a processing terminal provided in an embodiment of the present invention. Detailed Implementation

[0040] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0041] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0042] The heater pump described in this embodiment of the invention is a heater pump in the heating circuit of a vehicle's air conditioning system. Based on this, reference can be made to... Figure 1 , Figure 1 This is a flowchart illustrating a method for detecting the stall of a heater pump according to an embodiment of the present invention. The method for detecting the stall of a heater pump includes:

[0043] S101: When the heater stops heating, the outlet water temperature of the heater is obtained. The heater is the heater in the heating circuit of the air conditioning system.

[0044] In this embodiment, the status of the heater can be detected. When the heater is detected to change from the start state to the off state (that is, when the heater stops heating), the outlet water temperature of the heater can be obtained to detect the stall of the warm air water pump.

[0045] S102: Determine if the outlet water temperature is abnormal, and determine if the warm air water pump is blocked based on the abnormal outlet water temperature information. Among them, abnormal outlet water temperature means that the outlet water temperature changes according to a preset abnormal change trend.

[0046] In this embodiment, the trend of water temperature change at the heater outlet includes the direction and degree of change of the water temperature at the heater outlet within a preset time period. The direction of change of the water temperature at the heater outlet refers to whether the water temperature at the heater outlet increases or decreases, and the degree of change refers to the extent to which the water temperature at the heater outlet increases or decreases. Based on this, the preset abnormal change trend is the change trend of the water temperature at the outlet when it is abnormal, which is predetermined in this embodiment of the invention. For example, by analyzing historical data, the water temperature at the heater outlet when the heater pump is operating normally and the water temperature at the heater outlet when the heater pump is blocked can be compared and analyzed to obtain the change characteristics of the water temperature at the heater outlet when the heater pump is blocked. This change characteristic is the preset abnormal change trend. In this embodiment, the characteristics of the water temperature at the heater outlet when the heater pump is blocked can be known through the data analysis described above. Based on this, it can be determined whether the heater pump is blocked by "judging whether the change trend of the water temperature at the heater outlet meets the aforementioned characteristics".

[0047] In one possible implementation of this embodiment, the abnormal information includes the cumulative number of times the outlet water temperature is abnormal. Determining whether the heater pump is blocked based on the abnormal outlet water temperature information includes:

[0048] If the cumulative number of abnormal water temperature readings at the outlet exceeds the preset number, the heater pump is considered to be blocked. If the cumulative number of abnormal water temperature readings at the outlet does not exceed the preset number, the heater pump is considered not to be blocked.

[0049] In this embodiment, the cumulative number of abnormal water temperatures at the heater outlet can be calculated on a cycle of vehicle use. For example, each time the vehicle is used, the stall detection method in this embodiment is executed to determine whether the outlet water temperature is abnormal. Based on this, if the heater outlet water temperature is abnormal during N consecutive vehicle uses (N is a preset number), it can be determined that the heater pump is stalled.

[0050] In this embodiment, the cumulative number of times the heater outlet water temperature is abnormal can also be calculated on a cycle of each heater startup. For example, each time the heater is turned on, the stall detection method in this embodiment of the invention is executed to determine whether the outlet water temperature is abnormal. Based on this, if the heater is turned on N times consecutively (N is a preset number), and subsequent determinations show that the outlet water temperature of the heater is abnormal, then it can be determined that the warm air pump has stalled.

[0051] As described above, unlike existing technologies that detect whether a heater pump is stalled based on the pump's motor current or speed, the inventors of this application have creatively proposed a stall detection method based on the heater outlet water temperature after analyzing various parameters during the operation of the heater pump. Based on the data analysis of various parameters during the operation of the heater pump, the inventors discovered that when a heater pump stalls, this change is reflected early in the heater outlet water temperature when heating stops. Therefore, this embodiment of the invention acquires the heater outlet water temperature when heating is detected to have stopped, and determines whether the heater pump is stalled by the trend of this temperature change. Based on the solution of this embodiment, the stalling trend of the pump can be detected earlier, reducing the delay in heater pump stall detection and facilitating earlier fault warning and subsequent maintenance.

[0052] In summary, the embodiments of the present invention creatively select the outlet water temperature of the heater when heating stops as the criterion for detecting the blockage of the warm air water pump, thereby effectively solving the problems of the prior art.

[0053] In one possible implementation, detecting whether the heater has stopped heating includes:

[0054] After detecting that the heater is turned on, the current of the heater is obtained.

[0055] When the current of the heater is detected to be no greater than the preset current, the heater is stopped.

[0056] In this embodiment, the presence or absence of the heater can be determined by parameters such as the air conditioner switch signal and the heater's current / voltage. Furthermore, the heater's current level can be used to determine whether it has stopped heating. Typically, the heater stops heating when the current is 0. However, considering that a small current may still exist even when the heater stops heating (for example, a small current may exist even when the heater is in standby mode), this embodiment determines that the heater has stopped heating when the detected heater current is very small (i.e., the heater current is not greater than a preset current). The preset current can be 0 or a value slightly greater than 0; this is not limited here.

[0057] In this embodiment, the heater current is determined only after the heater is confirmed to be on. This is because the heater's on indicates it is functioning normally, preventing a misjudgment that the heater malfunctions and leads to the conclusion that the heater pump is blocked. Similarly, determining when the heater has stopped heating is necessary because only after the heater stops heating can it be confirmed that the abnormal outlet water temperature is due to the heater pump being blocked. In other words, determining when the heater has stopped heating is crucial to eliminate the influence of heater heating on the outlet water temperature and avoid misjudgments.

[0058] In summary, the embodiments of the present invention can effectively improve the accuracy of detecting stall in a heating water pump.

[0059] It should be noted that the heater stopping heating may also be caused by a malfunction of the heater itself, but this does not affect the implementation of the method in the embodiments of the present invention, so it will not be elaborated here.

[0060] In one possible implementation, before determining whether the warm air pump has stalled based on abnormal outlet water temperature information, the stall detection method also includes:

[0061] Obtain the engine coolant temperature of the vehicle.

[0062] The detection of engine coolant temperature affecting heater pump stall is based on the relative magnitude of engine coolant temperature and outlet coolant temperature.

[0063] Accordingly, based on abnormal information about the outlet water temperature, it can be determined whether the heater pump is blocked, including:

[0064] If it is determined that the engine coolant temperature will not affect the detection of the heater pump stall, then the abnormal information of the outlet coolant temperature can be used to determine whether the heater pump has stalled.

[0065] In this embodiment, considering that engine coolant temperature affects the outlet coolant temperature and thus the heater pump stall detection, the engine coolant temperature is also acquired. The relative magnitude of the engine coolant temperature and the heater outlet coolant temperature (or, by comparing the engine coolant temperature and the heater outlet coolant temperature) is used to determine whether the engine coolant temperature affects the heater pump stall detection. Only when it is determined that the engine coolant temperature will not affect the heater pump stall detection is the abnormal outlet coolant temperature used to determine whether the heater pump is stalled.

[0066] The solution based on the embodiments of the present invention can effectively improve the accuracy of detecting stall in a warm air water pump.

[0067] In one possible implementation, determining whether engine coolant temperature affects heater pump stall detection is based on the relative magnitude of engine coolant temperature and outlet coolant temperature, including:

[0068] If the engine coolant temperature is higher than the outlet coolant temperature, it is confirmed that the engine coolant temperature will not affect the stall detection of the heater pump.

[0069] In this embodiment, considering that the water temperature at the heater outlet will be high when the heater water pump stalls, only when the engine water temperature is higher than the outlet water temperature will the heat of the circulating water circuit not be carried away during the water circulation process, so as not to affect the abnormal judgment of the outlet water temperature in this embodiment of the invention, and the influence of the engine water temperature can be eliminated, thereby effectively improving the accuracy of subsequent heater water pump stall detection.

[0070] In this embodiment, if the engine coolant temperature is not higher than the outlet coolant temperature, it is determined that the engine coolant temperature will affect the detection of heater pump stall. In this case, the detection equipment on the heater pump side can be used directly to determine whether the heater pump is stalled. It should be noted that the stall detection method provided by this embodiment can achieve early detection of heater pump stall as much as possible, allowing users to discover the stall early and repair it as soon as possible. When early detection is not possible, existing detection methods can also be used, and this embodiment does not limit this.

[0071] In one possible implementation, the preset abnormal change trend can be obtained through data analysis of various parameters. For example, the method for determining the preset abnormal change trend can be:

[0072] The water temperature at the heater outlet when the heating water pump is running normally is obtained to get the first historical water temperature.

[0073] The outlet water temperature of the heater is obtained when the heater pump is stalled, thus obtaining the second historical water temperature.

[0074] A comparative analysis of the first and second historical water temperatures was conducted to determine the pre-set abnormal change trends.

[0075] In other words, by analyzing and processing the data, the outlet water temperature of the heater can be compared and analyzed when the heater is running normally and when the heater is stalled. This allows us to determine the characteristics of the change in the outlet water temperature of the heater when the heater is stalled, and these characteristics represent the preset abnormal change trend.

[0076] In one possible implementation, the preset abnormal change trend can be:

[0077] The water temperature at the outlet rises and reaches the preset temperature within a preset time.

[0078] The specific preset time and preset temperature values ​​can be obtained through data analysis; that is, the method for determining the preset time and preset temperature can be as follows:

[0079] The water temperature at the heater outlet when the heating water pump is running normally is obtained to get the first historical water temperature.

[0080] The outlet water temperature of the heater is obtained when the heater pump is stalled, thus obtaining the second historical water temperature.

[0081] By comparing and analyzing the first and second historical water temperatures, the preset time and preset temperature are determined.

[0082] The preset time can be 6 seconds, and the preset temperature can be 3 degrees Celsius. The specific values ​​of these two values ​​are not limited in this embodiment of the invention. When the preset time is 6 seconds and the preset temperature is 3 degrees Celsius, the preset abnormal change trend can be described as follows: the water temperature at the heater outlet rises by 3 degrees Celsius within 6 seconds.

[0083] In one possible implementation, the stall detection method may also include:

[0084] If it is determined that the heater pump is stalled, a fault message will be sent to the vehicle's infotainment system and / or the vehicle user's mobile terminal.

[0085] In this embodiment, once it is determined that the heater pump has stalled, a notification message can be sent to the vehicle user. Specifically, the notification message can be sent via the vehicle's infotainment system or to the user's mobile device. This embodiment of the invention can remind vehicle users to promptly repair the heater pump by providing fault warnings, thereby ensuring a better user experience.

[0086] Based on the above embodiments, please refer to Figure 2 The present invention also provides a specific example of a method for detecting a stalled operation of a warm air water pump. The implementation steps of the stalled operation detection method in this specific example are as follows:

[0087] S11: PTC heating status identification item: If the PTC is turned on for heating, proceed to S22 to wait for the PTC to stop; otherwise, terminate the judgment and proceed to S11 to re-determine the PTC heating status identification item.

[0088] S22: Waiting for PTC to stop: If the PTC current is determined to be 0 at this time, then the PTC is determined to stop heating, and the process jumps to S33 to eliminate the influence of engine coolant temperature. Otherwise, continue waiting for the PTC to stop heating.

[0089] S33: Eliminate Engine Coolant Temperature Influence Decision: If the engine coolant temperature is determined to be higher than the PTC outlet coolant temperature, proceed to S44 for abnormal coolant temperature rise determination. Otherwise, terminate the decision and proceed to S11 for re-determination of the PTC heating status identification.

[0090] S44: Water Temperature Abnormal Rise Judgment Item: If the PTC outlet water temperature rises by 3℃ within 6 seconds (taking "preset time is 6s, preset temperature is 3℃" as an example), proceed to S55 Abnormal Counter Accumulation Item. Otherwise, terminate the judgment and proceed to S11 to re-judge the PTC heating status identification item.

[0091] S55 (that is) Figure 2 S551 to S553): Abnormal Counter Accumulation Item: Accumulate the count value of the abnormal counter. If the count value of the abnormal counter is >3 (taking "preset count is 3" as an example), then the heater pump is determined to be stalled. If the count value of the abnormal counter is ≤3, then the judgment is terminated and jump to S11 to re-determine the PTC heating status identification item.

[0092] Specifically, if the fault counter's count value exceeds 3 and the heater pump is repaired, the fault counter's count value will be reset to zero. Figure 2 The steps shown can detect pump stalling faults as early as possible and provide timely warnings to users, facilitating after-sales maintenance.

[0093] Corresponding to the stall detection method of the warm air water pump in the above embodiment, Figure 3 This is a structural block diagram of a stall detection device for a heater water pump according to an embodiment of the present invention. For ease of explanation, only the parts relevant to the embodiment of the present invention are shown. The heater water pump described in the embodiment of the present invention refers to the heater water pump in the heating circuit of the vehicle's air conditioning system. Please refer to [further details omitted]. Figure 3 The stall detection device 20 for the warm air water pump includes: a data acquisition module 21 and a stall detection module 22.

[0094] The data acquisition module 21 is used to acquire the outlet water temperature of the heater when it is detected that the heater has stopped heating. The heater is the heater in the heating circuit of the air conditioning system.

[0095] The stall detection module 22 is used to determine whether the outlet water temperature is abnormal, and to determine whether the warm air water pump has stalled based on the abnormal outlet water temperature information. Among them, abnormal outlet water temperature means that the outlet water temperature changes according to a preset abnormal change trend.

[0096] In one possible implementation, the stall detection module 22 is also used to detect whether the heater has stopped heating. Detecting whether the heater has stopped heating includes:

[0097] After detecting that the heater is turned on, the current of the heater is obtained.

[0098] When the current of the heater is detected to be no greater than the preset current, the heater is stopped.

[0099] In one possible implementation, before determining whether the heater pump is stalled based on abnormal outlet water temperature information, the data acquisition module 21 is also used to acquire the vehicle's engine coolant temperature. The stall detection module 22 is also used to determine whether the engine coolant temperature will affect the stall detection of the heater pump based on the relative magnitude of the engine coolant temperature and the outlet water temperature.

[0100] Accordingly, based on abnormal information about the outlet water temperature, it can be determined whether the heater pump is blocked, including:

[0101] If it is determined that the engine coolant temperature will not affect the detection of the heater pump stall, then the abnormal information of the outlet coolant temperature can be used to determine whether the heater pump has stalled.

[0102] In one possible implementation, the stall detection module 22 is specifically used for:

[0103] If the engine coolant temperature is higher than the outlet coolant temperature, it is confirmed that the engine coolant temperature will not affect the stall detection of the heater pump.

[0104] In one possible implementation, the anomaly information includes the cumulative number of times the outlet water temperature is abnormal. The stall detection module 22 is specifically used for:

[0105] If the cumulative number of abnormal outlet water temperatures exceeds the preset number, the heater pump is considered to be stuck. Abnormal outlet water temperature refers to the outlet water temperature changing according to a preset abnormal trend.

[0106] In one possible implementation, the pre-defined abnormal change trends include:

[0107] The water temperature at the outlet rises and reaches the preset temperature within a preset time.

[0108] In one possible implementation, the stall detection module 22 is also used for:

[0109] When it is determined that the heater pump is stalled, a fault message is sent to the vehicle's infotainment system and / or the vehicle user's mobile terminal.

[0110] In another embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. The computer program can also instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0111] The computer-readable storage medium can be an internal storage unit of the processing terminal described in the following embodiments, such as a hard disk or memory of the processing terminal. The computer-readable storage medium can also be an external storage device of the processing terminal, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the processing terminal. Furthermore, the computer-readable storage medium may include both internal storage units and external storage devices of the processing terminal. The computer-readable storage medium is used to store computer programs and other programs and data required by the processing terminal. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0112] This invention also provides a vehicle that includes a processing terminal.

[0113] The aforementioned processing terminal can be the vehicle's TSP platform, i.e., the vehicle network data backend management platform. To detect heater pump stalling as early as possible, this embodiment uses the TSP platform to perform data cleaning and cluster analysis on various collected parameters, extracting characteristics of the vehicle's engine coolant temperature and PTC (the heater in the air conditioning system's heating circuit) outlet water temperature when the heater pump stalls. Based on this, the present invention proposes the aforementioned stall detection method based on PTC outlet water temperature. Subsequently, after determining that the heater pump has stalled based on the above stall detection method, a prompt message can be sent to the vehicle user. Specifically, the prompt message can be sent to the user via the vehicle's instrument panel / interactive screen, or it can be sent to the user's mobile terminal.

[0114] The aforementioned parameters include, but are not limited to, vehicle engine coolant temperature, PTC outlet coolant temperature, air conditioning switch signal, PTC operating status, PTC current, PTC voltage, and vehicle power mode.

[0115] Based on the above description, the sequential steps of the stall detection method provided in this embodiment of the invention can be referred to... Figure 4 This means that data collection and processing should be performed first to determine the stall detection method. Once the stall detection method detects a stall in the heater pump, fault notifications and handling can be initiated. For example, the vehicle user can be notified of a heater pump malfunction via an app, SMS, or telephone. Furthermore, a request for a repair shop appointment can be sent. If the user agrees, the appointment can be automatically scheduled to facilitate heater pump repair. Of course, the appointment can also be automatically scheduled upon detecting a stall in the heater pump; this embodiment does not limit this approach.

[0116] The data acquisition of the aforementioned parameters can be achieved through the vehicle's AC module (i.e., air conditioning controller module), HCU / VCU module (i.e., vehicle control module), PDU module (i.e., power distribution module), etc. After each module has collected various parameters, they can be transmitted to the vehicle's T-BOX (i.e., remote information processor) through CEM / GW (i.e., gateway), and then transmitted from T-BOX to the TSP platform described in this embodiment of the invention. The TSP platform performs data cleaning, clustering and other data processing operations on the collected parameters to extract the characteristics of the vehicle's engine water temperature and PTC outlet water temperature when the heater pump is stalled, and determines the stall detection method, and then executes the aforementioned stall detection method to realize the stall detection of the heater pump.

[0117] For details regarding the specific structure of the processing terminal, please refer to [link / reference]. Figure 5 , Figure 5 This is a schematic block diagram of a processing terminal provided in an embodiment of the present invention. Figure 5The processing terminal 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the modules / units in the above-described device embodiments, such as... Figure 3 The functions of modules 21 to 23 are shown.

[0118] It should be understood that, in this embodiment of the invention, the processor 301 may be a Central Processing Unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0119] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0120] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store device type information.

[0121] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of the present invention can execute the implementation methods described in the first and second embodiments of the stall detection method for the warm air water pump provided in the embodiments of the present invention, or they can execute the implementation methods of the processing terminal described in the embodiments of the present invention, which will not be repeated here.

[0122] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0123] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the processing terminal and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed processing terminals and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces or units, or it may be an electrical, mechanical, or other form of connection.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0126] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for detecting stall in a warm air water pump, characterized in that, The heater pump is the heater pump in the heating circuit of the vehicle's air conditioning system, and the stall detection method includes: When the heater stops heating, the outlet water temperature of the heater is obtained; wherein, the heater is the heater in the heating circuit of the air conditioning system; The method determines whether the outlet water temperature is abnormal and, based on the abnormality information of the outlet water temperature, determines whether the heater pump is blocked. Before determining whether the heater pump is blocked based on the abnormality information of the outlet water temperature, the blockage detection method further includes: acquiring the engine water temperature of the vehicle; determining whether the engine water temperature will affect the blockage detection of the heater pump based on the relative magnitude of the engine water temperature and the outlet water temperature; correspondingly, determining whether the heater pump is blocked based on the abnormality information of the outlet water temperature includes: if it is determined that the engine water temperature will not affect the blockage detection of the heater pump, then determining whether the heater pump is blocked based on the abnormality information of the outlet water temperature; the abnormality information includes the cumulative number of times the outlet water temperature is abnormal; determining whether the heater pump is blocked based on the abnormality information of the outlet water temperature includes: if the cumulative number of times the outlet water temperature is abnormal exceeds a preset number, then determining that the heater pump is blocked. Among them, abnormal outlet water temperature refers to the outlet water temperature changing in a preset abnormal trend.

2. The method for detecting stall in a warm air water pump as described in claim 1, characterized in that, Detecting whether the heater has stopped heating includes: After detecting that the heater is turned on, the current of the heater is acquired; When the current of the heater is detected to be no greater than a preset current, the heater is determined to stop heating.

3. The method for detecting stall in a warm air water pump as described in claim 1, characterized in that, The step of determining whether the engine coolant temperature will affect the stall detection of the heater pump based on the relative magnitude of the engine coolant temperature and the outlet coolant temperature includes: If the engine coolant temperature is higher than the outlet coolant temperature, then it is determined that the engine coolant temperature will not affect the stall detection of the heater pump.

4. The method for detecting stall in a warm air water pump as described in claim 1, characterized in that, The preset abnormal change trends include: The water temperature at the outlet rises, and within a preset time, the water temperature at the outlet reaches a preset temperature.

5. The method for detecting stall in a heating water pump as described in any one of claims 1 to 4, characterized in that, The stall detection method also includes: If it is determined that the heater pump is stalled, a fault message will be sent to the vehicle infotainment system and / or the vehicle user's mobile terminal.

6. A stall detection device for a warm air water pump, characterized in that, The heater pump is the heater pump in the heating circuit of the vehicle's air conditioning system, and the stall detection device includes: The data acquisition module is used to acquire the outlet water temperature of the heater when it is detected that the heater has stopped heating; wherein the heater is the heater in the heating circuit of the air conditioning system; A stall detection module is used to determine whether the outlet water temperature is abnormal, and to determine whether the heater pump is stalled based on the abnormal outlet water temperature information. Specifically, the stall detection module is used to: acquire the vehicle's engine water temperature; determine whether the engine water temperature will affect the stall detection of the heater pump based on the relative magnitude of the engine water temperature and the outlet water temperature; correspondingly, determining whether the heater pump is stalled based on the abnormal outlet water temperature information includes: if it is determined that the engine water temperature will not affect the stall detection of the heater pump, then determining whether the heater pump is stalled based on the abnormal outlet water temperature information; the abnormal information includes the cumulative number of times the outlet water temperature is abnormal; determining whether the heater pump is stalled based on the abnormal outlet water temperature information includes: if the cumulative number of times the outlet water temperature is abnormal exceeds a preset number, then determining that the heater pump is stalled; wherein, abnormal outlet water temperature refers to the outlet water temperature changing according to a preset abnormal change trend.

7. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 5.

8. A vehicle, characterized in that, include: Processing terminal; The processing terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method as described in any one of claims 1 to 5.

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