Filter clogging diagnosis method, device, apparatus, and storage medium

Abstract

The application provides a filter blockage diagnosis method, device, equipment and storage medium, the method comprises the following steps: acquiring the actual temperature and the actual pressure of the filter inlet in the vehicle, the filter is arranged at the inlet of the vehicle stack; comparing the actual temperature and the actual pressure with the corresponding preset working range respectively to determine whether the filter is blocked; if the filter is blocked, comparing the actual temperature and the actual pressure with the corresponding preset calibration threshold respectively to determine the blockage degree of the filter, so that the blockage degree of the filter can be diagnosed in time and accurately, and the effectiveness of filter diagnosis is improved.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and specifically to a method, apparatus, equipment, and storage medium for diagnosing filter clogging. Background Technology

[0002] The hydrothermal system of new energy vehicle batteries is an indispensable component of automobiles. Its primary function is to maintain the internal thermal balance of the battery system, ensuring that the battery stack operates within its optimal temperature range. The performance of the hydrothermal system directly affects the energy conversion efficiency and lifespan of the vehicle's battery. During discharge, the battery generates heat, which needs to be dissipated promptly through the hydrothermal system to prevent overheating and its impact on battery performance and lifespan. Furthermore, when the battery temperature is too low, the hydrothermal system can assist in heating, allowing the battery to quickly reach its suitable operating temperature, thus improving battery performance and lifespan. Therefore, if a malfunction occurs within the hydrothermal system and is not detected in time, it can lead to uncontrolled internal parameters such as temperature and pressure within the battery stack, affecting battery life and performance, and even posing safety hazards. The filter within the hydrothermal system, being the most prone to clogging, requires constant monitoring.

[0003] Chinese patent CN106571477A discloses a method for managing the ion filter of a fuel cell vehicle. It determines whether to replace the filter cartridge based on the pressure difference across the ion filter and the pressure difference change calculated from the refrigerant flow rate, thus preventing filter cartridge clogging to some extent. However, this solution only determines when to replace the filter cartridge and does not address the diagnosis of filter clogging. Therefore, how to diagnose filter clogging in a timely and effective manner to avoid affecting the performance and lifespan of the battery stack due to filter clogging is a pressing issue that needs to be addressed. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the present invention provides a filter clogging diagnosis method, apparatus, device and storage medium to solve the technical problem of how to diagnose filter clogging in a timely and effective manner.

[0005] In a first aspect, the present invention provides a filter clogging diagnosis method, comprising: acquiring the actual temperature and actual pressure at the inlet of a filter in a vehicle, wherein the filter is disposed at the inlet of a fuel cell stack in the vehicle; comparing the actual temperature and the actual pressure with corresponding preset operating ranges to determine whether the filter is clogged; and if the filter is clogged, comparing the actual temperature and the actual pressure with corresponding preset calibration thresholds to determine the degree of clogging of the filter.

[0006] In one embodiment of the present invention, determining whether the filter is clogged by comparing the actual temperature and the actual pressure with corresponding preset operating ranges includes: comparing the actual temperature with a preset temperature range, and comparing the actual pressure with a pressure upper limit value. The preset operating range includes the preset temperature range formed by the upper and lower temperature limits when the filter is working normally, and the preset pressure range formed by the upper and lower pressure limits when the filter is working normally. If the actual temperature is not within the preset temperature range and the actual pressure is greater than the pressure upper limit value, then the filter is determined to be clogged.

[0007] In one embodiment of the present invention, the step of comparing the actual temperature and the actual pressure with corresponding preset operating ranges includes: comparing the actual temperature with the preset temperature range, and the actual pressure with the preset pressure range; if the actual temperature is within the preset temperature range and the actual pressure is within the preset pressure range, then it is determined that the filter is not clogged; if the actual temperature is lower than or equal to the lower limit of the lower temperature range and the actual pressure is lower than or equal to the lower limit of the pressure range, then it is determined that the battery water heating system in the vehicle is faulty.

[0008] In one embodiment of the present invention, if the filter is clogged, comparing the actual temperature and the actual pressure with corresponding preset calibration thresholds to determine the degree of clogging includes: comparing the actual temperature with a preset calibration temperature threshold and the actual pressure with a preset calibration pressure threshold, wherein the preset calibration thresholds include the preset calibration temperature threshold and the preset calibration pressure threshold; if the actual temperature is lower than the preset calibration temperature threshold and the actual pressure is lower than the preset calibration pressure threshold, then the degree of clogging of the filter is determined to be a preset first degree; if the actual temperature reaches the preset calibration temperature threshold and / or the actual pressure reaches the preset calibration pressure threshold, then the degree of clogging of the filter is determined to be a preset second degree, wherein the severity of the preset second degree is higher than that of the first degree.

[0009] In one embodiment of the present invention, the preset first degree includes a first severity degree and a second severity degree ranging from low to high; determining the degree of clogging of the filter as the preset first degree includes: if the actual temperature is lower than or equal to the lower limit of the temperature, then the degree of clogging of the filter is determined to be the first severity degree; if the actual temperature is higher than the upper limit of the temperature, then the degree of clogging of the filter is determined to be the second severity degree.

[0010] In one embodiment of the present invention, the preset second degree includes a third, fourth, fifth, and sixth degree of severity, ranging from low to high. Determining the filter clogging degree as the preset second degree includes: if the actual temperature reaches the preset calibrated temperature threshold, and the actual pressure is higher than the upper pressure limit and lower than the preset calibrated pressure threshold, then the filter clogging degree is determined to be the third degree of severity; if the actual temperature is lower than or equal to the lower temperature limit and the actual pressure reaches the preset calibrated pressure threshold, then the filter clogging degree is determined to be the fourth degree of severity; if the actual temperature is higher than the upper temperature limit, lower than the preset calibrated temperature threshold, and the actual pressure reaches the preset calibrated pressure threshold, then the filter clogging degree is determined to be the fifth degree of severity; if the actual temperature reaches the preset calibrated temperature threshold and the actual pressure reaches the preset calibrated pressure threshold, then the filter clogging degree is determined to be the sixth degree of severity.

[0011] In one embodiment of the present invention, after determining the degree of clogging of the filter, the method further includes: generating a fault prompt based on the degree of clogging of the filter, wherein each degree of clogging corresponds to a different fault prompt, and the fault prompt includes at least one of a light prompt, an information prompt, and an audio prompt.

[0012] In a second aspect, the present invention also provides a filter clogging diagnostic device, comprising: an acquisition module for acquiring the actual temperature and actual pressure at the inlet of a filter in a vehicle, wherein the filter is disposed at the inlet of a fuel cell stack in the vehicle; a clogging determination module for comparing the actual temperature and the actual pressure with corresponding preset operating ranges to determine whether the filter is clogged; and a clogging degree determination module for, if the filter is clogged, comparing the actual temperature and the actual pressure with corresponding preset calibration thresholds to determine the degree of clogging of the filter.

[0013] In a third aspect, the present invention also provides an electronic device, comprising: a processor, a memory, and a communication bus; the communication bus being used to connect the processor and the memory; the processor being used to execute a computer program stored in the memory to implement the filter clogging diagnosis method as described in the above embodiments.

[0014] In a fourth aspect, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer's processor, causes the computer to perform the filter clogging diagnosis method as described in the above embodiments.

[0015] The beneficial effects of this invention are as follows: This invention proposes a method, apparatus, device, and storage medium for diagnosing filter clogging. By acquiring the actual temperature and pressure at the filter inlet in the vehicle, and with the filter positioned at the battery stack inlet, the actual temperature and pressure are compared with corresponding preset operating ranges to determine if the filter is clogged. If the filter is clogged, the actual temperature and pressure are compared with corresponding preset calibration thresholds to determine the degree of clogging. This allows for accurate diagnosis of the degree of clogging when it is detected in a timely manner, improving the effectiveness of filter diagnosis and facilitating targeted repairs based on the clogging situation, thus ensuring the performance and lifespan of the vehicle battery.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram illustrating the implementation environment of a filter clogging diagnosis method according to an exemplary embodiment of the present invention; Figure 2 This is a schematic flowchart illustrating a filter clogging diagnosis method according to an exemplary embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the filter location in an exemplary embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the overall process of filter clogging diagnosis according to an exemplary embodiment of the present invention; Figure 5 This is a schematic diagram illustrating a blockage determination process according to an exemplary embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the process of determining the degree of blockage in an exemplary embodiment of the present invention; Figure 7 This is a block diagram illustrating a filter clogging diagnostic device according to an exemplary embodiment of the present invention; Figure 8 This is a schematic diagram illustrating the structure of a computer system suitable for implementing the electronic device of the present invention, as shown in an exemplary embodiment of the present invention. Detailed Implementation

[0018] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0021] It's important to understand that in a vehicle battery's hydrothermal system, filters are typically used to ensure that the coolant or circulating water is free of impurities before entering the battery stack, thus preventing damage to the internal components. The filter in the hydrothermal system is installed on the coolant or water circulation pipe, located some distance before the battery stack. As the coolant or water flows from components such as the reservoir or heat exchanger through the filter, impurities are trapped, ensuring only clean liquid enters the battery stack. If the filter becomes clogged, coolant circulation in the hydrothermal system may be obstructed, preventing the battery from being effectively cooled or heated. This degrades battery performance because batteries cannot perform optimally at excessively high or low temperatures, and batteries operating in prolonged high or low temperature environments may be damaged, shortening their lifespan. Therefore, effective monitoring of filter operation and timely diagnosis of filter clogging are crucial.

[0022] Please see Figure 1 This is a schematic diagram illustrating an implementation environment for a filter clogging diagnosis method, as shown in an exemplary embodiment of the present invention. Figure 1As shown, the implementation environment includes a vehicle 110 and a controller 120. The controller 120 is embedded in the vehicle 110 and is used to implement the filter clogging diagnosis method. The controller 120 includes, but is not limited to, the vehicle infotainment system, the vehicle computer, the vehicle controller, etc. By collecting the actual temperature and pressure at the filter inlet in the vehicle, the controller diagnoses the clogging of the filter and further determines the degree of clogging. This improves the effectiveness of the filter diagnosis and ensures the performance and lifespan of the vehicle battery.

[0023] Please see Figure 2 The flowchart illustrates a filter clogging diagnosis method as an exemplary embodiment of the present invention. This method can be applied to... Figure 1 The implementation environment shown can also be applied to other exemplary implementation environments; this embodiment does not limit the implementation environment to which the method is applicable. Figure 2 As shown, in an exemplary embodiment, the filter clogging diagnosis method includes at least steps S210 to S230, which are described in detail below: Step S210: Obtain the actual temperature and actual pressure at the filter inlet in the vehicle. The filter is located at the inlet of the fuel cell stack in the vehicle.

[0024] In one embodiment of the invention, the filter of the hydrothermal system is often located somewhere before the fuel cell stack, i.e., at the inlet of the fuel cell stack, to ensure that the coolant or water is adequately filtered before entering the fuel cell stack. Furthermore, the actual temperature and pressure at the filter inlet can be directly acquired by sensors.

[0025] Please see Figure 3 This is a schematic diagram illustrating the filter location in an exemplary embodiment of the present invention. Figure 3 Taking the structure of the hydrothermal system shown as an example, the hydrothermal system mainly consists of a fuel cell stack, a high-pressure water pump, a filter, a four-way valve, an intercooler, a deionizer, a three-way valve, a heater core, a PTC (Positive Temperature Coefficient) heater, a low-pressure water pump, a radiator, a fuel cell stack water storage tank, and other components, as well as corresponding cooling pipes and sensors. The actual temperature and pressure at the filter inlet are directly measured by an integrated water inlet temperature and pressure sensor. It should be noted that... Figure 3 This is merely an example of a hydrothermal system for a fuel cell, and does not limit the structure of the hydrothermal system in actual applications. The stack can be a fuel cell stack or a power battery stack.

[0026] Please see Figure 4 This is a schematic diagram illustrating the overall process of filter clogging diagnosis, as shown in an exemplary embodiment of the present invention. Figure 4As shown, before diagnosing whether the filter is clogged, it is necessary to determine whether the hydrothermal system meets the preset diagnostic boundary conditions. The preset diagnostic boundary conditions are that all components in the hydrothermal system except the filter are operating normally, and the filter is in operation. Determining that components other than the filter are operating normally includes at least the absence of sensor-related faults, four-way valve-related faults, water pump-related faults, radiator-related faults, four-way valve opening within a preset opening range, radiator fan speed within a preset fan speed range, and water pump speed within a preset water pump speed range. Only after setting the diagnostic boundary conditions can the filter clogging diagnosis proceed, preventing the accuracy of filter fault diagnosis from being affected by other fault factors and ensuring the effectiveness of filter fault diagnosis.

[0027] Step S220: Compare the actual temperature and actual pressure with the corresponding preset working ranges to determine whether the filter is clogged.

[0028] Specifically, the actual temperature is compared with the preset temperature range, and the actual pressure is compared with the upper pressure limit. The preset operating range includes a preset temperature range formed by the upper and lower temperature limits when the filter is operating normally, and a preset pressure range formed by the upper and lower pressure limits when the filter is operating normally. If the actual temperature is not within the preset temperature range and the actual pressure is greater than the upper pressure limit, the filter is determined to be clogged. The filter is not clogged if: the actual temperature and preset temperature range, and the actual pressure and preset pressure range are compared respectively; if the actual temperature and actual pressure are within the preset temperature and preset pressure ranges, the filter is determined to be unclogging; if the actual temperature is lower than or equal to the lower temperature limit and the actual pressure is lower than or equal to the lower pressure limit, the battery hydrothermal system in the vehicle is determined to be faulty, meaning a component in the battery hydrothermal system other than the filter is faulty.

[0029] Please see Figure 5 This is a schematic diagram illustrating a blockage determination process according to an exemplary embodiment of the present invention. Figure 5As shown, the preset temperature range is greater than the lower limit of the temperature range and less than or equal to the upper limit of the temperature range, and the preset pressure range is greater than the lower limit of the pressure range and less than or equal to the upper limit of the pressure range. In actual testing, it was found that simply determining whether the actual pressure is higher than the upper limit of the pressure range can preliminarily indicate filter blockage. However, since the measured actual pressure fluctuates, immediately diagnosing a filter malfunction as soon as the actual pressure exceeds the upper limit could lead to numerous false diagnoses, requiring frequent and unnecessary filter maintenance by relevant personnel, and resulting in overly frequent diagnoses of filter blockage, leading to low diagnostic accuracy. Therefore, in addition to actual pressure, actual temperature is also considered in the comprehensive assessment of filter blockage. Filter blockage is only confirmed when both are abnormal, thus improving diagnostic accuracy.

[0030] In one embodiment of the present invention, in order to avoid the blockage diagnosis being too sensitive and to improve the accuracy of the diagnosis, a time threshold can also be set. When the actual temperature is detected to be outside the preset temperature range and the actual pressure is greater than the upper limit of the pressure for a duration exceeding the preset time threshold, the filter is judged to be blocked. The same applies to other comparison cases related to blockage judgment.

[0031] By combining the above methods with the actual temperature and pressure at the filter inlet, a comprehensive judgment can be made as to whether the filter is clogged, thus improving the accuracy and effectiveness of clog diagnosis.

[0032] In step S230, if the filter is clogged, the actual temperature and actual pressure are compared with the corresponding preset calibration thresholds to determine the degree of filter clogging.

[0033] Specifically, the actual temperature is compared with the preset calibration temperature threshold, and the actual pressure is compared with the preset calibration pressure threshold. The preset calibration threshold includes the preset calibration temperature threshold and the preset calibration pressure threshold. If the actual temperature is lower than the preset calibration temperature threshold and the actual pressure is lower than the preset calibration pressure threshold, the filter clogging degree is determined to be the preset first degree. If the actual temperature reaches the preset calibration temperature threshold and / or the actual pressure reaches the preset calibration pressure threshold, the filter clogging degree is determined to be the preset second degree, and the severity of the preset second degree is higher than that of the first degree.

[0034] In one embodiment of the present invention, when a filter becomes clogged, the degree of clogging can be used for diagnostic classification. Different degrees of clogging severity help determine the priority of fault handling. When the filter is severely clogged, immediate action is required to avoid degradation of fuel cell performance due to filter clogging.

[0035] Please see Figure 6 This is a schematic diagram illustrating the process of determining the degree of blockage, as shown in an exemplary embodiment of the present invention. Figure 6 As shown, the preset first severity level includes a first severity level and a second severity level, ranging from low to high. If the actual temperature T is lower than or equal to the lower limit T1, and the actual pressure P is higher than the upper limit P2 and lower than the preset calibrated pressure threshold P3, then the filter clogging level is determined to be the first severity level. If the actual temperature T is higher than the upper limit T2, and the actual pressure P is higher than the upper limit P2 and lower than the preset calibrated pressure threshold P3, then the filter clogging level is determined to be the second severity level. The preset second severity level includes third, fourth, fifth, and sixth severity levels, ranked from lowest to highest. If the actual temperature T reaches the preset calibrated temperature threshold T3, and the actual pressure P is higher than the upper pressure limit P2 and lower than the preset calibrated pressure threshold P3, the filter clogging level is determined to be third severity. If the actual temperature T is lower than or equal to the lower temperature limit T1, and the actual pressure P reaches the preset calibrated pressure threshold P3, the filter clogging level is determined to be fourth severity. If the actual temperature T is higher than the upper temperature limit T2, lower than the preset calibrated temperature threshold T3, and the actual pressure P reaches the preset calibrated pressure threshold P3, the filter clogging level is determined to be fifth severity. If the actual temperature T reaches the preset calibrated temperature threshold T3 and the actual pressure P reaches the preset calibrated pressure threshold P3, the filter clogging level is determined to be sixth severity. This approach covers a wider range of filter clogging scenarios, more accurately classifies the clogging level, and ensures high accuracy and reliability in clogging diagnosis.

[0036] In one embodiment of the present invention, by classifying the degree of filter clogging more finely, it is helpful to detect and address clogging problems in a timely manner. For example, if the filter is only slightly clogged, it may only require simple cleaning or backwashing; while if the clogging is severe, it may be necessary to replace the filter.

[0037] Specifically, after determining the degree of filter clogging: a fault prompt is generated based on the degree of filter clogging, with each degree of clogging corresponding to a different fault prompt, which includes at least one of the following: light prompt, information prompt, and sound prompt.

[0038] In one embodiment of the present invention, different fault prompts are used to provide maintenance personnel with different maintenance and inspection methods. The fault prompts also carry prompts regarding the degree of blockage, the suggested maintenance and inspection time, and the maintenance method. For example, when the filter fault degree is a preset second degree, the indicator light is yellow, and the relevant maintenance personnel are reminded to perform maintenance and inspection immediately through information prompts or sound prompts. The suggested maintenance and inspection time for each more detailed severity level under the blockage degree can also be set differently, and the actual temperature and actual pressure of the filter corresponding to each severity level are displayed as a comparison with the corresponding preset operating range and preset calibration threshold.

[0039] The above methods can be used to diagnose the degree of filter clogging, allowing for targeted maintenance and inspection based on the different levels of clogging, making filter troubleshooting more targeted and precise.

[0040] Based on the above embodiments, this invention proposes a filter clogging diagnosis method. This method acquires the actual temperature and pressure at the filter inlet in the vehicle; compares the actual temperature and pressure with corresponding preset operating ranges to determine if the filter is clogged; if the filter is clogged, compares the actual temperature and pressure with corresponding preset calibration thresholds to determine the degree of clogging. This allows for timely detection of filter clogging and accurate diagnosis of the degree of clogging, improving the effectiveness of filter diagnosis and facilitating targeted repairs based on the clogging situation, thus ensuring the performance and lifespan of the vehicle battery.

[0041] Please see Figure 7 This is a block diagram illustrating a filter clogging diagnostic device according to an exemplary embodiment of the present invention. The device can be applied to... Figure 1 The implementation environment shown is intended to illustrate an application that does not limit the implementation environment of the device. Figure 7 As shown, the exemplary filter clogging diagnostic device includes: an acquisition module 710, a clogging determination module 720, and a clogging degree determination module 730.

[0042] The acquisition module 710 is used to acquire the actual temperature and actual pressure at the filter inlet in the vehicle, where the filter is located at the inlet of the fuel cell stack in the vehicle. The clogging detection module 720 is used to compare the actual temperature and actual pressure with the corresponding preset working range to determine whether the filter is clogged. The clogging degree determination module 730 is used to determine the degree of clogging of the filter by comparing the actual temperature and actual pressure with the corresponding preset calibration thresholds if the filter is clogged.

[0043] It should be noted that the filter clogging diagnostic device provided in the above embodiments and the filter clogging diagnostic method provided in the above embodiments belong to the same concept. The specific way of performing each step has been described in detail in the system embodiments, and will not be repeated here.

[0044] Embodiments of the present invention also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the electronic device enables the filter clogging diagnosis method provided in the above embodiments.

[0045] Please see Figure 8 A schematic diagram of a computer system suitable for implementing embodiments of the present invention is shown. It should be noted that... Figure 8 The computer system 800 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0046] like Figure 8 As shown, the computer system 800 includes a Central Processing Unit (CPU) 801, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, based on a program stored in Read-Only Memory (ROM) 802 or a program loaded from storage portion 808 into Random Access Memory (RAM) 803. The RAM 803 also stores various programs and data required for system operation. The CPU 801, ROM 802, and RAM 803 are interconnected via a bus 804. An Input / Output (I / O) interface 805 is also connected to the bus 804.

[0047] The following components are connected to I / O interface 805: an input section 806 including a keyboard, mouse, etc.; an output section 807 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to I / O interface 805 as needed. Removable media 811, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 810 as needed so that computer programs read from them can be installed into storage section 808 as needed.

[0048] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing a computer program for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 809, and / or installed from removable medium 811. When the computer program is executed by central processing unit (CPU) 801, it performs various functions defined in the system of the present invention.

[0049] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the filter clogging diagnosis method as described above. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not assembled into the electronic device.

[0050] It should be noted that the computer-readable medium shown in the embodiments of the present invention can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In the present invention, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0051] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. Each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for diagnosing filter clogging, characterized in that, include: The actual temperature and actual pressure at the inlet of the filter in the vehicle are obtained; the filter is located at the inlet of the fuel cell stack in the vehicle. The filter is determined to be clogged by comparing the actual temperature and the actual pressure with the corresponding preset working ranges. If the filter is clogged, the actual temperature and the actual pressure are compared with the corresponding preset calibration thresholds to determine the degree of clogging of the filter. The step of determining whether the filter is clogged by comparing the actual temperature and the actual pressure with the corresponding preset operating ranges includes: The actual temperature is compared with the preset temperature range, and the actual pressure is compared with the upper pressure limit. The preset operating range includes the preset temperature range formed by the upper temperature limit and the lower temperature limit when the filter is working normally, and the preset pressure range formed by the upper pressure limit and the lower pressure limit when the filter is working normally. If the actual temperature is not within the preset temperature range and the actual pressure is greater than the upper pressure limit, then the filter is determined to be clogged.

2. The filter clogging diagnosis method according to claim 1, characterized in that, The step of comparing the actual temperature and the actual pressure with the corresponding preset working ranges includes: The actual temperature and the preset temperature range, and the actual pressure and the preset pressure range are compared respectively. If the actual temperature is within the preset temperature range and the actual pressure is within the preset pressure range, then it is determined that the filter is not clogged. If the actual temperature is lower than or equal to the lower limit of the temperature, and the actual pressure is lower than or equal to the lower limit of the pressure, then it is determined that there is a fault in the battery water heating system in the vehicle.

3. The filter clogging diagnosis method according to claim 1, characterized in that, If the filter is clogged, the actual temperature and actual pressure are compared with corresponding preset calibration thresholds to determine the degree of clogging, including: The actual temperature is compared with a preset calibration temperature threshold, and the actual pressure is compared with a preset calibration pressure threshold, wherein the preset calibration threshold includes the preset calibration temperature threshold and the preset calibration pressure threshold. If the actual temperature is lower than the preset calibrated temperature threshold and the actual pressure is lower than the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be a preset first degree. If the actual temperature reaches the preset calibrated temperature threshold and / or the actual pressure reaches the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be a preset second degree, the severity of which is higher than that of the first degree.

4. The filter clogging diagnosis method according to claim 3, characterized in that, The preset first severity level includes a first severity level and a second severity level, ranging from low to high; Determining the degree of clogging of the filter to a preset first degree includes: If the actual temperature is lower than or equal to the lower limit of the temperature, then the degree of clogging of the filter is determined to be the first severity. If the actual temperature is higher than the upper temperature limit, the degree of clogging of the filter is determined to be the second severity level.

5. The filter clogging diagnosis method according to claim 3, characterized in that, The preset second severity level includes a third severity level, a fourth severity level, a fifth severity level, and a sixth severity level, ranging from low to high. Determining the degree of clogging of the filter to a preset second degree includes: If the actual temperature reaches the preset calibrated temperature threshold, and the actual pressure is higher than the pressure upper limit or lower than the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be the third severity. If the actual temperature is lower than or equal to the lower limit of the temperature, and the actual pressure reaches the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be the fourth severity. If the actual temperature is higher than the upper temperature limit, lower than the preset calibrated temperature threshold, and the actual pressure reaches the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be the fifth severity level. If the actual temperature reaches the preset calibrated temperature threshold and the actual pressure reaches the preset calibrated pressure threshold, then the degree of clogging of the filter is determined to be the sixth severity level.

6. The filter clogging diagnosis method according to any one of claims 1 to 5, characterized in that, After determining the degree of clogging of the filter, the method further includes: A fault prompt is generated based on the degree of clogging of the filter, with each degree of clogging corresponding to a different fault prompt, which includes at least one of light prompts, information prompts, and sound prompts.

7. A filter clogging diagnostic device, characterized in that, include: An acquisition module is used to acquire the actual temperature and actual pressure at the inlet of the filter in the vehicle, wherein the filter is located at the inlet of the fuel cell stack in the vehicle; A clogging detection module is used to determine whether the filter is clogged by comparing the actual temperature and the actual pressure with corresponding preset operating ranges, respectively. Specifically, the actual temperature is compared with a preset temperature range, and the actual pressure is compared with a pressure upper limit. The preset operating range includes a preset temperature range formed by the upper and lower temperature limits when the filter is operating normally, and a preset pressure range formed by the upper and lower pressure limits when the filter is operating normally. If the actual temperature is not within the preset temperature range and the actual pressure is greater than the pressure upper limit, then the filter is determined to be clogged. The clogging degree determination module is used to compare the actual temperature and the actual pressure with the corresponding preset calibration thresholds if the filter is clogged, and determine the degree of clogging of the filter.

8. An electronic device, characterized in that, include: Processor, memory, and communication bus; The communication bus is used to connect the processor and the memory; The processor is configured to execute a computer program stored in the memory to implement the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It contains a computer program that enables the computer to perform the method as described in any one of claims 1 to 6.

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