A charging pile filter screen dirty blockage detection method, electronic device and storage medium

Abstract

The application relates to the technical field of charging piles and discloses a charging pile filter screen dirty block detection method, an electronic device and a storage medium, wherein the method comprises the following steps: in the case that the highest internal temperature of a power module in a last running charging process on a charging pile is acquired, when it is determined that the highest internal temperature meets a preset running over-temperature condition, the first fan and the second fan are controlled to run at full speed; when the first fan and the second fan end the full-speed running, the real-time internal temperature of the power module is acquired; and according to the highest internal temperature, the real-time internal temperature and a pre-determined environmental temperature, the dirty block condition of the filter screen is determined. In the application, the whole process is intelligentized, additional personnel are not needed to participate in detection, the filter screen dirty block detection efficiency is improved, especially, the filter screen dirty block condition is detected by configuring a fan full-speed running scene, most of the misjudgment sources are effectively shielded, the anti-interference performance is high, the result is more accurate, and the filter screen dirty block detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, and in particular to a method for detecting dirt and clogging in the filter screen of a charging pile, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the rapid popularization and development of electric vehicles, the power of electric vehicles is increasing, which poses new challenges to the charging demand and heat dissipation capacity of charging piles. Currently, most charging piles on the market use air cooling. Due to the need for heat dissipation protection, filters or dustproof cotton are usually added to the air intake system of the charging pile. As the usage time increases, the filters may become clogged or blocked, requiring staff to check the filter condition of the charging pile from time to time. Such inspection is relatively inefficient and brings additional burden to the staff. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a method, electronic device, and storage medium for detecting filter clogging in charging piles, which can improve the efficiency of filter clogging detection and reduce the workload of staff.

[0004] In a first aspect, embodiments of the present invention provide a method for detecting dirt clogging in a charging pile filter. The filter is disposed at the air inlet of the charging pile, a first fan is installed at the air inlet of the charging pile, and a power module and a second fan matched to the power module are disposed inside the charging pile. The method includes the following steps:

[0005] If the highest internal temperature of the power module during a single charging operation on the charging pile is obtained, and it is determined that the highest internal temperature meets the preset over-temperature conditions, the first fan and the second fan are controlled to run at full speed.

[0006] When the first fan and the second fan finish full-speed operation, the real-time internal temperature of the power module is obtained;

[0007] The degree of clogging of the filter is determined based on the highest internal temperature, the real-time internal temperature, and the predetermined ambient temperature.

[0008] Optionally, in one embodiment of the present invention, determining the clogging status of the filter screen based on the highest internal temperature, the real-time internal temperature, and a predetermined ambient temperature includes:

[0009] The full-speed operating temperature drop ratio of the power module is determined based on the highest internal temperature, the real-time internal temperature, and the predetermined ambient temperature.

[0010] The degree of clogging of the filter is determined based on the relative magnitude of the full-speed operation temperature drop ratio and the preset threshold of the temperature drop ratio.

[0011] Optionally, in one embodiment of the present invention, determining the full-speed operating temperature drop ratio of the power module based on the highest internal temperature, the real-time internal temperature, and a predetermined ambient temperature includes:

[0012] The difference between the highest internal temperature and the real-time internal temperature is obtained to determine the internal temperature change value of the power module.

[0013] The difference between the highest internal temperature and the predetermined ambient temperature is obtained to obtain the ambient temperature difference of the power module;

[0014] The ratio of the internal temperature change to the ambient temperature difference is calculated to obtain the full-speed operating temperature drop ratio of the power module.

[0015] Optionally, in one embodiment of the present invention, when the preset threshold for temperature drop ratio includes a first preset temperature drop ratio threshold and a second preset temperature drop ratio threshold, and the first preset temperature drop ratio threshold is less than the second preset temperature drop ratio threshold, determining the clogging status of the filter screen based on the relative magnitude of the full-speed operation temperature drop ratio and the preset threshold for temperature drop ratio includes:

[0016] When the full-speed operating temperature drop ratio is less than the first preset temperature drop ratio threshold, it is determined that the filter screen is in a severely clogged state;

[0017] or,

[0018] When the full-speed operating temperature drop ratio is greater than or equal to the first preset temperature drop ratio threshold and less than the second preset temperature drop ratio threshold, the filter screen is determined to be in a moderately clogged state.

[0019] or,

[0020] When the full-speed operating temperature drop ratio is greater than or equal to the second preset temperature drop ratio threshold, the filter is determined to be in a normal state.

[0021] Optionally, in one embodiment of the present invention, the operating over-temperature condition is that the ratio of the highest internal temperature to the preset maximum limit internal temperature is greater than a preset ratio parameter.

[0022] Optionally, in one embodiment of the present invention, before obtaining the real-time internal temperature of the power module, the method further includes:

[0023] When the real-time load rate of the power module is detected to exceed the preset minimum effective load rate, the first fan and the second fan are controlled to stop full-speed operation.

[0024] In a second aspect, embodiments of the present invention provide an electronic device, comprising:

[0025] At least one processor;

[0026] At least one memory for storing at least one program;

[0027] When at least one of the programs is executed by at least one of the processors, the charging pile filter clogging detection method as described in the first aspect is implemented.

[0028] Thirdly, embodiments of the present invention provide a computer-readable storage medium storing a processor-executable program, which, when executed by a processor, is used to implement the charging pile filter clogging detection method as described in the first aspect.

[0029] This invention proposes a method, electronic device, and storage medium for detecting filter clogging in charging piles. By determining whether the highest internal temperature of the power module during a single charging cycle on the charging pile meets the over-temperature condition, the first and second fans are run at full speed. This ensures a more reliable detection scenario for filter clogging. Then, when the first and second fans finish full-speed operation, the filter clogging status can be determined based on the highest internal temperature of the power module, the real-time internal temperature under the full-speed operation end condition, and a predetermined ambient temperature. The entire detection process is intelligent, requiring no additional personnel, thus improving filter clogging detection efficiency and reducing the workload of staff. In particular, by configuring the fan full-speed operation scenario for filter clogging detection, most false alarms are effectively shielded, resulting in strong anti-interference capabilities and more accurate results, which is beneficial for improving the accuracy of filter clogging detection. Attached Figure Description

[0030] Figure 1 This is a flowchart of a method for detecting dirt and clogging in the filter screen of a charging pile according to an embodiment of the present invention;

[0031] Figure 2 yes Figure 1 The flowchart for step S3 in the process;

[0032] Figure 3 yes Figure 2 The flowchart of step S31 in the process;

[0033] Figure 4 yes Figure 1 The flowchart preceding step S2;

[0034] Figure 5 This is a schematic diagram of the execution flow of a method for detecting dirt and clogging in a charging pile filter according to an embodiment of the present invention;

[0035] Figure 6This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0036] like Figure 1 As shown, an embodiment of the present invention provides a method for detecting dirt and clogging of a charging pile filter. The method may include, but is not limited to, steps S1 to S3. The filter is disposed at the air inlet of the charging pile, a first fan is installed at the air inlet of the charging pile, and a power module and a second fan matched with the power module are disposed inside the charging pile. The specifications and parameters of the first fan and the second fan can be set according to the actual application scenario, and are not limited here.

[0037] Step S1: After obtaining the highest internal temperature of the power module during a single charging operation on the charging pile, and determining that the highest internal temperature meets the preset over-temperature conditions, control the first fan and the second fan to run at full speed.

[0038] Step S2: When the first fan and the second fan finish full-speed operation, obtain the real-time internal temperature of the power module;

[0039] Step S3: Determine the degree of clogging of the filter screen based on the highest internal temperature, the real-time internal temperature, and the predetermined ambient temperature. It can be understood that the ambient temperature shown is the real-time temperature of the actual environment in which the charging pile and power module are located.

[0040] In this step, by determining that the highest internal temperature of the power module during a single charging operation on the charging pile meets the over-temperature condition, the first and second fans are run at full speed to ensure a more reliable detection scenario for filter clogging. Then, when the first and second fans finish running at full speed, the filter clogging status can be determined based on the highest internal temperature of the power module, the real-time internal temperature under the condition of the end of full-speed operation, and the predetermined ambient temperature. The entire detection process is intelligent, requiring no additional personnel to participate in the detection, which can improve the efficiency of filter clogging detection and reduce the burden on staff. In particular, by configuring the fan full-speed operation scenario for filter clogging detection, most sources of false judgment are effectively shielded, the anti-interference ability is strong, and the results are more accurate, which is conducive to improving the accuracy of filter clogging detection.

[0041] In one embodiment, in step S1, the highest internal temperature of the power module during the previous charging process of the charging pile is obtained. This can be sampled at the moment when the previous electric vehicle and the charging pile finished charging. This reflects the actual situation of the charging pile's most recent charging operation. The obtained highest internal temperature can better characterize the daily operation of the power module, so as to further perform subsequent detection based on the highest internal temperature.

[0042] In one embodiment, the highest internal temperature and the real-time internal temperature can be obtained automatically by the charging pile, or they can be sampled by externally installed temperature sensors.

[0043] In one embodiment, the operating over-temperature condition in step S1 can be set according to different scenarios, and there is no limitation here. For example, it can be, but is not limited to, the ratio of the highest internal temperature to the preset maximum limit internal temperature being greater than the preset ratio parameter. It can be understood that when it is determined that the highest internal temperature meets the preset operating over-temperature condition, it means that the highest internal temperature at this time is relatively high and exceeds the temperature that should be under normal operating conditions. Therefore, it can be determined that the filter screen is at risk of being clogged, and the real-time internal temperature of the power module can be obtained for further detection. Conversely, it means that the highest internal temperature at this time is within the normal threshold range, and it can be determined that the filter screen is basically not clogged or the clogging is relatively minor.

[0044] Understandably, the specific values ​​of the maximum internal temperature limit and the preset ratio parameter can be set according to the actual scenario, and there are no restrictions here. For example, if the ambient temperature is 35℃, the maximum internal temperature limit is set to 85℃, and the preset ratio parameter is set to 0.8, then the critical temperature threshold is 68℃. If the highest internal temperature is detected to be 72℃, then obviously the ratio of the highest internal temperature to the maximum internal temperature limit exceeds 0.8, indicating that the highest internal temperature meets the over-temperature condition. For another example, if the ambient temperature is higher, the preset ratio parameter can be set lower to match the actual scenario. That is, if the ambient temperature is 40℃, the preset ratio parameter can be set to 0.7.

[0045] like Figure 2 As shown, in one embodiment of the present invention, step S3 may include, but is not limited to, the following steps:

[0046] Step S31: Determine the full-speed operating temperature drop ratio of the power module based on the highest internal temperature, the real-time internal temperature, and the predetermined ambient temperature.

[0047] Step S32: Determine the degree of clogging of the filter screen based on the relative magnitude of the temperature drop ratio during full-speed operation and the preset threshold value of the temperature drop ratio.

[0048] In this step, the full-speed operating temperature drop ratio of the power module is determined by combining the highest internal temperature, the real-time internal temperature, and the predetermined ambient temperature. This clarifies the temperature control range of the power module under full-speed operation of the first and second fans, and then determines whether the temperature control range meets the target requirements. That is, based on the relative relationship between the full-speed operating temperature drop ratio and the preset threshold temperature drop ratio, the degree of filter clogging can be determined more accurately. Especially considering that it is matched to the full-speed operation scenario of the first and second fans, it theoretically provides the maximum heat dissipation support for the power module. Therefore, the corresponding determination of the filter clogging is more reliable and the detection accuracy will be higher.

[0049] like Figure 3 As shown, in one embodiment of the present invention, step S31 may include, but is not limited to, the following steps:

[0050] Step S311: Obtain the difference between the highest internal temperature and the real-time internal temperature to get the internal temperature change value of the power module;

[0051] Step S312: Obtain the difference between the highest internal temperature and the predetermined ambient temperature to obtain the ambient temperature difference of the power module;

[0052] Step S313: Calculate the ratio of the internal temperature change value to the ambient temperature difference to obtain the full-speed operation temperature drop ratio of the power module.

[0053] Specifically, steps S311 to S313 can be represented based on the following formula:

[0054] ;

[0055] in, This indicates the temperature drop ratio at full speed of the power module. Indicates the highest internal temperature. Indicates the real-time internal temperature. The ambient temperature is represented by the formula above. It can be seen that the full-speed operating temperature drop ratio of the power module can be accurately and reliably calculated. This formula takes into account the difference between the highest internal temperature brought by the first and second fans and the real-time internal temperature, as well as the objective temperature difference between the highest internal temperature and the ambient temperature. Ultimately, this ensures that the calculated full-speed operating temperature drop ratio of the power module is more accurate.

[0056] In one embodiment of the present invention, when the preset threshold for temperature drop ratio includes a first preset temperature drop ratio threshold and a second preset temperature drop ratio threshold, and the first preset temperature drop ratio threshold is less than the second preset temperature drop ratio threshold, step S32 may include, but is not limited to, the following steps:

[0057] Step S321: When the temperature drop ratio during full-speed operation is less than the first preset temperature drop ratio threshold, it is determined that the filter screen is in a severely clogged state.

[0058] or,

[0059] Step S322: When the temperature drop ratio during full-speed operation is greater than or equal to the first preset temperature drop ratio threshold and less than the second preset temperature drop ratio threshold, it is determined that the filter screen is in a moderately clogged state.

[0060] or,

[0061] Step S323: When the temperature drop ratio during full-speed operation is greater than or equal to the second preset temperature drop ratio threshold, it is determined that the filter is in normal condition.

[0062] In this step, considering that when the charger's air inlet is clogged, the overall airflow is obstructed, and the fan cannot effectively dissipate heat even at full speed. This is directly reflected in a relatively low temperature drop ratio during full-speed operation. In other words, after the fan runs at full speed, the internal temperature of the power module should drop significantly to a certain extent. Specifically, by comparing the first preset temperature drop ratio threshold and the second preset temperature drop ratio threshold, if the temperature drop ratio during full-speed operation is less than the first preset temperature drop ratio threshold, it indicates that the temperature drop ratio during full-speed operation is extremely small. At this time, the filter is severely clogged and should be cleaned immediately. If the temperature drop ratio during full-speed operation is greater than or equal to the first preset temperature drop ratio threshold and less than the second preset temperature drop ratio threshold, it indicates that the power module has a temperature drop, but it is not significant. It is judged to be in a moderately clogged state and does not need to be cleaned and repaired immediately. For example, observe for a few more days and arrange repairs after 3 days. If the temperature drop ratio during full-speed operation is greater than or equal to the second preset temperature drop ratio threshold, it indicates that the temperature drop of the power module is considerable and meets expectations. In this case, the filter is in a normal state and does not need to be repaired.

[0063] As can be seen, determining the filter's clogging status through the above steps is simple and efficient, allowing for rapid response and diagnosis. It is also highly versatile, applicable to different models of air-cooled charging piles, ultimately ensuring that the entire charging pile's operating temperature remains within a suitable range.

[0064] like Figure 4 As shown in one embodiment of the present invention, before step S2, the following steps may be included, but are not limited to:

[0065] Step S4: When the real-time load rate of the power module is detected to exceed the preset minimum effective load rate, control the first fan and the second fan to stop running at full speed.

[0066] In this step, considering the possibility of false load alarms due to the real-time load of the power module not reaching the expected level, the first and second fans are only controlled to stop full-speed operation when the real-time load rate of the power module exceeds the preset minimum effective load rate. This ensures that the real-time load of the power module reaches the expected level, thus ensuring that the full-speed operation of the first and second fans is meaningful. Controlling the first and second fans to stop full-speed operation can better match the full-speed operation of the power module and ensure that the real-time internal temperature of the power module can be accurately obtained at this time.

[0067] Understandably, the minimum effective load rate can be set according to the actual application scenario, and there is no restriction here. For example, it can be, but is not limited to, 50%.

[0068] To better illustrate the working principle of the above embodiments, specific examples are given below.

[0069] like Figure 5 As shown, firstly, confirm whether the full-speed test of the first fan and the second fan is triggered. If so, that is, if the highest internal temperature meets the preset over-temperature conditions, update and control the speed of the first fan and the second fan. Otherwise, continue to check whether the full-speed test can be carried out. For example, if the highest temperature of the power module is detected to rise to 72℃ during the operation of the charging pile, that is, 72℃>0.8×85℃, then the full-speed test is started.

[0070] Then, after 10 minutes, the first and second fans stopped running at full speed, and the real-time internal temperature of the power module was 70°C.

[0071] Then, by combining the highest internal temperature, the real-time internal temperature, and the ambient temperature (detected as 30℃), the full-speed operating temperature drop ratio of the power module is calculated, i.e., R = (72-70) / (72-30) = 0.048;

[0072] Finally, based on the relative magnitude of the temperature drop ratio during full-speed operation and the preset threshold of the temperature drop ratio, the degree of clogging of the filter screen is determined. Specifically, the first preset threshold of the temperature drop ratio is 0.2, and the second preset threshold of the temperature drop ratio is 0.4. Obviously, R is less than 0.2, so it is determined to be a serious clogging situation. Further on-site disassembly confirmed that its air inlet was blocked by willow catkins.

[0073] Figure 6 This is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present invention. For example... Figure 6 As shown, the electronic device 1000 includes a memory 1100 and a processor 1200. The number of memories 1100 and processors 1200 can be one or more. Figure 6Taking a memory 1100 and a processor 1200 as an example; the memory 1100 and the processor 1200 in the device can be connected via a bus or other means. Figure 6 Taking the example of a connection between China and Israel via a bus.

[0074] The memory 1100, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the charging pile filter clogging detection method provided in any embodiment of the present invention. The processor 1200 implements the above-mentioned charging pile filter clogging detection method by running the software programs, instructions, and modules stored in the memory 1100.

[0075] The memory 1100 may primarily include a program storage area and a data storage area, wherein the program storage area may store the operating system and application programs required for at least one function. Furthermore, the memory 1100 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1100 may further include memory remotely located relative to the processor 1200, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0076] An embodiment of the present invention also provides a computer-readable storage medium storing computer-executable instructions for performing the charging pile filter clogging detection method provided in any embodiment of the present invention.

[0077] An embodiment of the present invention also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. The processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the charging pile filter clogging detection method provided in any embodiment of the present invention.

[0078] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0079] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0080] The terms “component,” “module,” “system,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process or execution thread, and components may be located on a single computer or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems via signals).

Claims

1. A method for detecting dirt clogging of a charging pile filter screen, characterized in that, The filter screen is arranged at an air inlet of the charging pile, the air inlet of the charging pile is provided with a first fan, a power module and a second fan matched with the power module are arranged inside the charging pile, and the method comprises the following steps: In the case that the highest internal temperature of the power module in the last running charging process of the charging pile is acquired, when it is determined that the highest internal temperature meets a preset running over-temperature condition, the first fan and the second fan are controlled to run at full speed; When the first fan and the second fan end the full-speed running, the real-time internal temperature of the power module is acquired; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; 2. The method of claim 1, wherein the method further comprises: According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; 3. The method of claim 1, wherein the method further comprises: According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; According to the highest internal temperature and the real-time internal temperature in combination with a predetermined ambient temperature, the dirty blocking condition of the filter screen is determined; The running over-temperature condition is that the ratio of the highest internal temperature to a preset maximum limit internal temperature is greater than a preset proportion parameter.

4. The method of claim 1, wherein the method further comprises: Before the real-time internal temperature of the power module is acquired, the following step is further included:

5. The method of claim 1, wherein the method further comprises: When it is detected that the real-time load rate of the power module exceeds a preset minimum effective load rate, the first fan and the second fan are controlled to end the full-speed running. It comprises:

6. An electronic device, comprising: At least one processor; At least one memory for storing at least one program; When at least one of the programs is executed by at least one of the processors, the charging pile filter screen dirty blocking detection method as claimed in any one of claims 1 to 5 is implemented. ​ 7. A computer-readable storage medium, characterized in that, It stores a processor-executable program, which, when executed by the processor, is used to implement the charging pile filter clogging detection method as described in any one of claims 1 to 5.

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