Helium detection machine, anomaly detection method and device of helium detection machine, electronic equipment and medium

Abstract

The invention provides a helium detection machine, an anomaly detection method and device of the helium detection machine, electronic equipment and a medium, and relates to a battery helium detection technology. The method comprises the following steps: for any to-be-tested battery cell, determining first pressure change information of a target test cavity in which the to-be-tested battery cell is placed and / or a target pipeline to be connected with the to-be-tested battery cell after vacuumizing operation; wherein the vacuumizing operation is carried out on the target test cavity under the condition that the target pipeline is inserted into the target test cavity and is not connected with the to-be-tested battery cell; if the first pressure change information meets the preset condition, the target pipeline is controlled to be connected with the to-be-detected battery cell, the helium charging assembly performs helium charging operation on the to-be-detected battery cell through the target pipeline, and whether the helium charging assembly and / or the target pipeline are / is abnormal or not is determined through the helium charging operation. According to the invention, the accuracy of abnormal reason detection of the helium detector can be improved.

Description

Technical Field

[0001] The present application relates to battery helium inspection technology, and in particular to a helium inspection machine and an abnormality detection method, device, electronic equipment, and medium for the helium inspection machine. Background Art

[0002] Helium filling test of batteries is an important means to test the sealing of batteries. By timely discovering and dealing with helium leakage problems in batteries, the sealing of batteries can be guaranteed, which is conducive to ensuring the normal operation and use of batteries. At present, helium testing machines are usually used to test helium filling of batteries.

[0003] It is understandable that in order to ensure the accuracy of the detection, the helium detector needs to be tested regularly to determine whether the helium detector meets the test standards. In the known technology, the battery cell with the determined test results is generally placed in the test chamber of the helium detector as the battery cell to be tested, and helium is filled on it. The result obtained by the helium filling operation and the known test results are used to determine whether the helium detector meets the test standards.

[0004] In the above process, there is a defect of low accuracy in detecting abnormal causes, which makes it impossible to guarantee the accuracy of the helium detection results. Summary of the invention

[0005] The present application provides a helium detector and an abnormality detection method, device, electronic equipment, and medium for the helium detector, so as to ensure the accuracy of the helium detection results.

[0006] In a first aspect, the present application provides a method for detecting an abnormality of a helium detector, the helium detector comprising a helium filling component and at least one pipeline; the helium detector is used to perform a helium inspection on at least one battery cell to be tested; the method comprises:

[0007] For any cell to be tested, determine the first pressure change information of the target test cavity where the cell to be tested is placed and / or the target pipeline to be connected to the cell to be tested after the vacuum operation; wherein the vacuum operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the cell to be tested;

[0008] If the first pressure change information meets a preset condition, the target pipeline is controlled to be connected to the battery cell to be tested, the helium filling component performs a helium filling operation on the battery cell to be tested through the target pipeline, and it is determined whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

[0009] In a possible implementation, when the first pressure change information includes pipeline pressure change information of the target pipeline after the vacuum operation and cavity pressure change information of the target test cavity after the vacuum operation, the method further includes:

[0010] Determine whether there is a connection abnormality and an airtightness abnormality according to the pipeline pressure change information and the cavity pressure change information; the connection abnormality is used to indicate that the target pipeline is incorrectly connected to the target test cavity, and the airtightness abnormality is used to indicate that the airtightness of the target pipeline and / or the target test cavity is unqualified;

[0011] When the connection abnormality and the airtightness abnormality do not exist, it is determined that the pipeline pressure change information and the cavity pressure change information meet the preset condition.

[0012] In a possible implementation, determining whether there is a connection abnormality and an airtightness abnormality according to the pipeline pressure change information and the cavity pressure change information includes:

[0013] When the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline has not decreased, determining that the pipeline pressure change information indicates that the connection abnormality exists;

[0014] When the pipeline pressure change information indicates that the connection abnormality does not exist, it is determined whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information.

[0015] In a possible implementation, determining whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information includes:

[0016] If the pipeline pressure change information indicates that after the vacuum pumping operation of the target pipeline is stopped, the pipeline pressure value increases and does not remain at the first preset value for a preset period of time, it is determined that the pipeline pressure change information indicates the presence of the airtightness abnormality and is used to indicate that the airtightness of the target pipeline is unqualified.

[0017] In a possible implementation, determining whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information includes:

[0018] If the cavity pressure change information indicates that the cavity pressure value of the target test cavity increases and does not remain at the second preset value for a preset period of time after the vacuum pumping operation is stopped, it is determined that the cavity pressure change information indicates the presence of the airtightness abnormality and is used to indicate that the airtightness of the target test cavity is unqualified.

[0019] In a possible implementation, determining whether the helium filling component and / or the target pipeline is abnormal through the helium filling operation includes:

[0020] Obtaining the second pressure change information before the helium filling operation is completed, and the target time taken to complete the helium filling;

[0021] Based on the second pressure change information and the target duration, it is determined whether there is an abnormality in the helium filling component and the target pipeline.

[0022] In a possible implementation, determining whether there is an abnormality in the helium filling component and the target pipeline based on the second pressure change information and the target duration includes:

[0023] When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is less than the first value, it is determined that there is an abnormality in the target pipeline and / or an abnormality in the helium filling component, and the abnormality in the target pipeline is used to indicate that there are bending and / or blockage defects in the target pipeline, and the abnormality in the helium filling component is used to indicate that the helium filling speed regulating valve of the helium filling component is improperly adjusted; the first value is the minimum value in the preset range.

[0024] In a possible implementation, determining whether there is an abnormality in the helium filling component and the target pipeline based on the second pressure change information and the target duration includes:

[0025] When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is greater than the second value, it is determined that there is an abnormality in the helium filling component, and the abnormality in the helium filling component is used to indicate that there is a defect of insufficient helium in the helium filling component and improper adjustment of the helium filling speed regulating valve of the helium filling component; the second value is the maximum value in the preset range.

[0026] In a possible implementation, determining first pressure change information of a target test cavity where the battery cell to be tested is placed and / or a target pipeline to be connected to the battery cell to be tested after a vacuum operation includes:

[0027] Obtaining a target detection request; the target detection request is used to instruct to perform abnormal detection on the target test cavity, the target pipeline and the corresponding helium filling component;

[0028] In response to the target detection request, the pipeline pressure change information and the cavity pressure change information are acquired.

[0029] In a possible implementation, the step of responding to the target detection request and acquiring the pipeline pressure change information and the cavity pressure change information includes:

[0030] In response to the target detection request, opening a vacuum pump valve corresponding to the target test cavity to perform a vacuum operation on the target test cavity and the target pipeline;

[0031] Record the pipeline pressure change of the target pipeline after the vacuum operation starts, and the cavity pressure change of the target test cavity after the vacuum operation starts, wherein the pipeline pressure change is the pipeline pressure change information, and the cavity pressure change is the cavity pressure change information.

[0032] In one possible implementation, the method further includes:

[0033] When the first pressure change information satisfies the preset condition and there is no abnormality in the helium filling component and the target pipeline, feeding back detection pass information;

[0034] When the first pressure change information does not satisfy the preset condition, and / or the helium filling component has an abnormality, and / or the target pipeline has an abnormality, detection failure information is fed back.

[0035] In one possible implementation, the method further includes:

[0036] When the detection pass information is fed back, the target test cavity is nitrogen-filled and vacuum-evacuated, and the helium in the battery cell to be tested is recovered.

[0037] In a second aspect, the present application provides an abnormality detection device of a helium detector, the helium detector comprising a helium filling component and at least one pipeline, the helium detector being used to perform a helium inspection on at least one battery cell to be tested; the device comprising:

[0038] A determination module, for determining, for any cell to be tested, first pressure change information of a target test cavity in which the cell to be tested is placed and / or a target pipeline to be connected to the cell to be tested after a vacuum operation; wherein the vacuum operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the cell to be tested;

[0039] The detection module is used to control the target pipeline to be connected to the battery cell to be tested, the helium filling component to perform a helium filling operation on the battery cell to be tested through the target pipeline when the first pressure change information meets a preset condition, and determine whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

[0040] In a third aspect, the present application provides an electronic device, comprising a processor, and a memory communicatively connected to the processor;

[0041] The memory stores computer-executable instructions;

[0042] The processor executes the computer-executable instructions stored in the memory to implement the method as described in any one of the first aspects.

[0043] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method as described in any one of the first aspects.

[0044] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method described in any one of the first aspects.

[0045] In a sixth aspect, the present application provides a helium detector, comprising at least one test chamber, at least one pipeline, a helium filling component, and electronic equipment; wherein:

[0046] The test cavity is used to place at least one battery cell to be tested;

[0047] The pipeline is inserted into any test cavity and is used to connect to the helium filling port of the test cell when the test cell in the test cavity is subjected to helium inspection, so that the helium filling component can perform helium filling operation on the test cell through the pipeline;

[0048] The electronic device is used to execute the abnormality detection method of the helium detector as described in any one of the first aspects.

[0049] The present application provides a helium detector and an abnormality detection method, device, electronic device, and medium for the helium detector. In the method of the present application, when the helium detector is detected, for any battery cell to be tested, the first pressure change information of the corresponding target test cavity and / or target pipeline is determined. When the first pressure change information meets the preset conditions, it is further determined whether there is an abnormality in the helium filling component and / or the target pipeline according to the helium filling operation. Through the method of the present application, when there is an abnormality in the helium detector, the abnormal cause that causes the first pressure change information of the target test cavity and / or the target pipeline not to meet the preset conditions can be eliminated first, which is conducive to more accurately determining the abnormal cause, ensuring the accuracy of abnormality detection, and further conducive to ensuring the accuracy of helium detection of the helium detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0051] Figure 1 A schematic diagram of the structure of a helium detector provided in an embodiment of the present application;

[0052] Figure 2A schematic diagram of a process for detecting an abnormality of a helium detector provided in an embodiment of the present application Figure 1 ;

[0053] Figure 3 A schematic diagram of a process for detecting an abnormality of a helium detector provided in an embodiment of the present application Figure 2 ;

[0054] Figure 4 An internal gas circuit diagram of a product valve island provided in an embodiment of the present application;

[0055] Figure 5 A flowchart of an abnormality detection method for a helium detector provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of the structure of an abnormality detection device of a helium detector provided in an embodiment of the present application;

[0057] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0058] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0059] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0060] A helium detector is an instrument used to detect the sealing of equipment or components. It determines the sealing by detecting helium leakage. Helium is an ideal tracer gas because of its small molecules, inert chemical properties, and is not easily interfered with by other gases in the environment. Helium detectors are widely used in various industrial fields, including electronics, aerospace, automobiles, medical equipment, and battery manufacturing. Among them, in order to ensure the sealing and other performance and safety of the battery, the battery needs to be tested for helium filling. At present, helium detectors are usually used to test the helium filling of batteries to ensure that the batteries can operate and be used normally.

[0061] Specifically, the helium detector includes a test cavity and a helium filling pipeline. In one implementation, when the battery is tested by the helium detector, the battery is placed in the test cavity, helium is filled into the battery through the helium filling pipeline, and then the leakage of the battery is detected by detecting the helium in the test cavity. It is understandable that if the test cavity and the helium filling pipeline fail, it will affect the accuracy of the battery test results. Therefore, it is necessary to regularly test the helium filling pipeline and test cavity of the helium detector.

[0062] In the known technology, the helium detector is generally tested manually on a regular basis to confirm whether the helium detector meets the test standards. Specifically, the relevant staff regularly puts the battery cells with known test results as the battery cells to be tested into the test chamber, performs helium filling operation on them and obtains the operation results. Through the results and the known test results, it is determined whether the helium detector meets the test standards.

[0063] In the above process, if the helium detector fails between two tests, there is a defect that the fault cannot be discovered in time, which will lead to inaccurate helium detection results of the battery during this period. In addition, during the helium detection of the battery cell, the helium detector involves the test cavity, the helium filling pipeline for connecting the battery, and the helium detection assembly. Any defect in any of these parts will affect the accuracy of the helium detector. By testing in the above manner, we can only know that the helium detector does not meet the test standard, but cannot accurately know the reason why the helium detector does not meet the test standard, that is, it is impossible to know the specific cause of the abnormality, which is not conducive to the accuracy of the abnormal detection of the helium detector, the timely maintenance of the helium detector, and further, it is not conducive to ensuring the accuracy of the helium detector when testing the battery.

[0064] Therefore, the present application provides a helium detector and an abnormality detection method, device, electronic device, and medium for the helium detector to solve the above problems. Specifically, in the present application, when the helium detector is detected, for any battery cell to be tested, the first pressure change information of the corresponding target test cavity and / or target pipeline is determined, and then when the first pressure change information meets the preset conditions, the target pipeline is connected to the battery cell to be tested, and the battery cell to be tested is filled with helium, and through the helium filling operation, it is determined whether there is an abnormality in the helium filling component and / or the target pipeline.

[0065] Through the above process, when confirming whether the helium detector meets the test standard, after excluding the situation where the first pressure change information of the target test cavity and / or the target pipeline does not meet the preset conditions, it is possible to determine whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation, which is conducive to obtaining the accurate cause of the abnormality and ensuring the reliability of the test results. Further, it is conducive to ensuring the helium detection accuracy of the helium detector.

[0066] The present application provides a helium testing machine, comprising at least one test cavity, at least one pipeline and a helium filling component, wherein the test cavity is used to place at least one battery cell to be tested, and the pipeline is inserted into any test cavity, so as to be connected to the helium filling port of the battery cell to be tested when the battery cell to be tested in the test cavity is subjected to helium testing, so that the helium filling component can perform helium filling operation on the battery cell to be tested through the pipeline.

[0067] Specifically, Figure 1 A schematic diagram of the structure of a helium detector provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the helium inspection machine is provided with multiple test stations, each test station is provided with multiple test areas, and each test area is provided with four test cavities for placing the battery cells to be tested. Each test cavity is connected to the chamber vacuum pump through a vacuum pipe, and each test cavity is connected to a helium filling pipe for accessing the battery cells to be tested. One end of the helium filling pipe extends into the test cavity, and the other end is connected to the product valve island and then connected to the product pump. It can be understood that the helium filling pipe is the above-mentioned pipe, which corresponds one-to-one to the battery cells to be tested.

[0068] The cavity vacuum pump is used to evacuate the test cavity. Specifically, a vacuum pump valve is provided on the vacuum pipeline between the cavity vacuum pump and the test cavity. Figure 1 As shown in T11, T12, T13, and T14, they are used to control the connection and disconnection of the chamber vacuum pump and the test chamber. Figure 1 When the rightmost test chamber is being vacuumed, the vacuum pump valve T11 is controlled to be in a start-up state to connect the chamber vacuum pump and the test chamber to perform vacuuming on the test chamber.

[0069] Correspondingly, such as Figure 1 As shown, each test cavity is provided with a cavity pressure sensor P11 / P12 / P13 / P14, which is used to detect the pressure value in the corresponding test cavity.

[0070] The product pump is used to evacuate the battery cells to be tested, and the product valve island corresponds to the test area one by one. Figure 1 The product valve island shown has four solenoid valves integrated therein, which are used to control the connection and disconnection between the product pump and the helium filling pipelines C1, C2, C3, and C4 set in the corresponding test area. In addition, four pipeline pressure sensors P1, P2, P3, and P4 are also set on the product valve island to detect the pressure value in the corresponding helium filling pipeline.

[0071] For Figure 1The helium test machine shown can be tested by the abnormality detection method of the helium test machine of the present application before using it to perform helium testing on the battery cell to be tested, so as to determine whether the helium test machine meets the test standard. Specifically, for any target pipeline in the helium test machine used to connect the battery cell to be tested, control the corresponding chamber vacuum pump to evacuate it and the target test cavity into which it is inserted, and determine the first pressure change information of the target test cavity and / or the target pipeline after the vacuum operation. Then, when the first pressure change information meets the preset conditions, control the helium filling component to perform helium filling operation on the battery cell to be tested through the target pipeline, so as to determine whether there is an abnormality in the helium filling component and the target pipeline through the helium filling operation.

[0072] Through the abnormality detection method of the helium detector of the present application, it is possible to timely detect whether the helium detector meets the test standard, and the abnormality cause of the helium detector can be accurately determined.

[0073] It is understandable that the helium detector may also include at least one controller, and the abnormality detection method of the helium detector of the present application may be executed by any controller in the helium detector, or by any other electronic device outside the helium detector. Accordingly, the method of the present application may be applicable to any of the aforementioned abnormality detection scenarios of the helium detector, and this is not limited in the present application.

[0074] It is understandable that the helium detector can also be connected to the corresponding chamber vacuum pump through the helium filling pipeline, and the vacuum pump valve is correspondingly set on the helium filling pipeline, which is not limited in this embodiment.

[0075] Optionally, in actual applications, five test cavities or six test cavities may be provided in each test area of ​​the helium testing machine. The number of test areas and test cavities is not limited in the present application, as long as the helium filling pipelines correspond one-to-one to the battery cells to be tested.

[0076] In conjunction with the accompanying drawings, some implementation methods of the abnormality detection method of the helium detector of the present application are described in detail below. In the case where the embodiments do not conflict, the following embodiments and the features in the embodiments can be combined with each other. It is worth noting that in the following embodiments, an abnormality detection method of a helium detector is performed by any electronic device outside the helium detector as an example for description.

[0077] The present application embodiment provides a method for detecting abnormality of a helium detector. Figure 2 A schematic diagram of a process for detecting an abnormality of a helium detector provided in an embodiment of the present application Figure 1 ,like Figure 2 As shown, a method for detecting an abnormality of a helium detector provided in an embodiment of the present application includes the following contents:

[0078] S201 , for any battery cell to be tested, determining first pressure change information of a target test cavity where the battery cell to be tested is placed and / or a target pipeline to be connected to the battery cell to be tested after a vacuum operation.

[0079] The vacuuming operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the battery cell to be tested.

[0080] It can be understood that the above-mentioned target pipeline is the helium filling pipeline in the aforementioned helium detector, and the helium filling component performs helium filling operation to the corresponding battery cell to be tested through the target pipeline. When performing abnormal detection on the helium detector, it is necessary to detect the helium filling component, each target test cavity that can place the battery cell to be tested, and the target pipeline corresponding to the battery cell to be tested.

[0081] It can be understood that when the target pipeline is inserted into the target test cavity and is not connected to the battery cell to be tested, the target pipeline and the target test cavity are in a connected state. When the electronic device controls the corresponding cavity vacuum pump to vacuum the target test cavity, it will also vacuum the target test cavity and the target pipeline at the same time.

[0082] Therefore, in this embodiment, the electronic device determines the first pressure change information of the target test cavity and / or the target pipeline after the vacuum operation, which can be used as a basis for judging whether the connected target test cavity and the target pipeline are normal.

[0083] In this embodiment, the first pressure change information is used to indicate the pressure change of the target test cavity and / or the target pipeline after the vacuum operation. Figure 1 The pressure change of the target test chamber after the vacuum operation can be seen by Figure 1 The pressure change of the target pipeline after the vacuum operation can be obtained by the cavity pressure sensor set in the target test cavity. Figure 1 The line pressure sensor shown is installed in the product valve island.

[0084] S202, if the first pressure change information meets the preset conditions, control the target pipeline to be connected to the battery cell to be tested in the target test cavity, and the helium filling component to perform helium filling operation on the battery cell to be tested through the target pipeline, and determine whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

[0085] It is understandable that after the electronic device controls the corresponding cavity vacuum pump to perform a vacuum operation on the target test cavity and the target pipeline, if the target test cavity and the target pipeline can meet the test standard, the pressure change after the vacuum operation should meet the corresponding preset conditions. In this embodiment, the electronic device first confirms whether the first pressure change information meets the preset conditions, and when it meets the preset conditions, it determines whether there is an abnormality in the helium filling component and the target pipeline through the helium filling operation.

[0086] Specifically, a sealed cylinder is provided in the helium detector. Figure 1 In the helium tester shown, when the target test cavity is evacuated, the electronic device controls the sealing cylinder not to extend the injection rod, so that the target test cavity and the target pipeline can be connected. When the battery cell to be tested is filled with helium, the electronic device controls the sealing cylinder to extend the injection rod, so that the target pipeline can be connected to the helium filling port of the battery cell to be tested, thereby achieving the connection between the target pipeline and the battery cell to be tested.

[0087] Furthermore, the electronic device controls the helium filling component to perform helium filling operation on the battery cell to be tested through the target pipeline. The parts involved at this time include the helium filling component and the target pipeline. Therefore, it is possible to determine whether there is any abnormality in the helium filling component and the target pipeline through the helium filling operation.

[0088] It is understandable that each test cavity in the helium detector can also be used to place at least two cells to be tested, and accordingly, at least two helium filling pipelines are inserted into the cells to be tested. When the helium detector is inspected, for any cell to be tested, when the corresponding target test cavity and target pipeline are vacuumed, the corresponding sealing cylinder is controlled to extend the injection rod, so that other helium filling pipelines in the target test cavity except the target pipeline are not connected to the target test cavity, so as to eliminate the influence of other helium filling pipelines, which is conducive to the accurate inspection of the helium detector.

[0089] On this basis, when the corresponding part of the helium detector is detected for abnormalities through other cells to be tested in the same target test cavity, the remaining helium filling pipeline should be kept disconnected from the target test cavity to obtain accurate test results. It can be understood that when the previous first pressure change information meets the preset conditions, the pressure change of the target test cavity can no longer be obtained, that is, there is no need to detect whether the target test cavity meets the test standard.

[0090] In the method provided in this embodiment, when the electronic device detects the helium detector, for any target pipeline corresponding to the battery cell to be tested and the target test cavity connected to the target pipeline and used to place the battery cell to be tested, the first pressure change information of the target pipeline and / or the target test cavity is first determined. Secondly, when the first pressure change information meets the preset conditions, the connection between the target pipeline and the battery cell to be tested in the target test cavity is controlled, and the helium filling component is controlled to perform helium filling operation on the battery cell to be tested through the target pipeline. Finally, it is determined whether there is an abnormality in the helium filling component through the helium filling operation.

[0091] Through the method of this embodiment, the electronic equipment can first eliminate the abnormal reasons that cause the pressure information of the target test cavity and the target pipeline to fail to meet the preset conditions, and then confirm whether there are other abnormalities in the helium filling component and the target pipeline, so that relevant personnel can accurately know the abnormal reasons of the helium detector, which is convenient for timely and accurate maintenance of the helium detector, and is beneficial to ensure the accuracy of the helium detector in detecting the battery cells to be tested when it is used.

[0092] In a possible design, when the first pressure change information is the first pressure change information of the target test cavity and the target pipeline after the vacuum operation, the pressure information of the target pipeline after the vacuum operation is used as the pipeline pressure change information, and the pressure information of the target test cavity after the vacuum operation is used as the cavity pressure change information.

[0093] On this basis, if the pipeline pressure change information and the cavity pressure change information meet the preset conditions, the target pipeline is controlled to be connected to the battery cell to be tested in the target test cavity, and the helium filling component performs helium filling operation on the battery cell to be tested through the target pipeline, and determines whether there is any abnormality in the helium filling component and the target pipeline through the helium filling operation.

[0094] In this embodiment, if the first pressure change information includes the pipeline pressure change information of the target pipeline and the cavity pressure change information of the target test cavity, then when the pipeline pressure change information and the cavity pressure change information meet the preset conditions, the helium filling component is controlled to perform helium filling operation on the battery cell to be tested, and the helium filling operation is used to determine whether there is any abnormality in the helium filling component and the target pipeline.

[0095] Through this setting, the electronic device can determine whether the preset conditions are met by combining the pressure changes of the target test cavity and the target pipeline after the vacuum operation. On the one hand, the pressure detection range is narrowed, making the first pressure change information more reliable to improve the detection accuracy. On the other hand, the target test cavity and the target pipeline are reflected through their respective pressure information, which makes it easier to find the specific cause of the abnormality when the preset conditions are not met.

[0096] Optionally, since the target test cavity and the target pipeline are in a connected state when the helium filling operation is not performed, in practical applications, the first pressure change information may also only include pipeline pressure change information or cavity pressure change information, which is not limited in this embodiment.

[0097] It is understandable that after the target test cavity and the target pipeline are vacuumed, under normal circumstances, the pressure values ​​of the target test cavity and the target pipeline will decrease. However, if the target pipeline and other helium-filled pipelines are inserted reversely, the pressure value detected by the pipeline pressure sensor corresponding to the target pipeline will not change. When this problem does not exist, the target test cavity and the target pipeline can reach a vacuum state at a certain moment regardless of whether there is an airtightness problem. When the target test cavity and the target pipeline both reach a vacuum state, stop the vacuum operation and perform a pressure holding test. Through the pressure changes at this time, it can be determined whether there is an airtightness problem in the target test cavity and the target pipeline.

[0098] Therefore, in one possible design, the electronic device determines whether there are connection abnormalities and airtightness abnormalities based on the pipeline pressure change information and the cavity pressure change information; when there are no connection abnormalities and airtightness abnormalities, it determines that the pipeline pressure change information and the cavity pressure change information meet preset conditions.

[0099] Specifically, the connection abnormality is used to indicate that the target pipeline and the target test cavity are incorrectly connected, and the airtightness abnormality is used to indicate that the airtightness of the target pipeline and / or the target test cavity is unqualified.

[0100] Through this setting, the electronic device can first eliminate the connection abnormality and airtightness abnormality of the target test cavity and the target pipeline. When there is no connection abnormality and airtightness abnormality, it is determined that the first pressure change information meets the preset condition, so as to further determine whether there is an abnormality in the target test cavity and / or the target pipeline according to the helium filling operation, thereby improving the accuracy of subsequent abnormality detection results.

[0101] In one possible design, second pressure change information before the helium filling operation is completed and a target duration for completing the helium filling are obtained; based on the second pressure change information and the target duration, it is determined whether there is an abnormality in the helium filling component and the target pipeline.

[0102] In this embodiment, the electronic device can determine whether there is an abnormality in the helium filling component and the target pipeline based on the pressure change during the helium filling operation and the helium filling time. It is understandable that the second pressure change information is used to indicate the pressure change of the target pipeline during helium filling, which can be obtained based on its corresponding pressure sensor. The helium filling time can be obtained through a timing module, which can be integrated in the electronic device or set in the helium detection machine to record the time when helium filling starts.

[0103] It is understandable that both the helium filling component and the target pipeline affect the second pressure change information and the target duration, so it is possible to determine whether the helium filling component and the target pipeline are abnormal based on the second pressure change information and the target duration. It is understandable that the abnormality of the target pipeline here is used to indicate the abnormality of the target pipeline itself, such as bending, blockage, etc.

[0104] The above process can determine whether there are abnormalities in the helium filling component and the target pipeline based on the easily obtained second pressure change information and the target duration, and has the advantages of easy acquisition of judgment basis and simple judgment logic.

[0105] Figure 3 A schematic diagram of a process for detecting an abnormality of a helium detector provided in an embodiment of the present application Figure 2 Based on the above embodiments, the present application further describes in detail the method of determining whether the preset conditions are met and the method of determining whether there are abnormalities in the helium filling component and the target pipeline. Figure 3 As shown, the method of this embodiment includes:

[0106] S301 , when the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline has not decreased, determining that the pipeline pressure change information indicates that there is a connection abnormality.

[0107] It is understandable that after the target test cavity and the target pipeline are vacuumed, under normal circumstances, the pressure values ​​of the target test cavity and the target pipeline will decrease.

[0108] Therefore, in this embodiment, the electronic device can determine whether the pipeline pressure value of the target pipeline decreases after the vacuum operation according to the pipeline pressure change information, and if it does not decrease, it determines that there is a connection abnormality between the target pipeline and the target test cavity, that is, the target pipeline is connected incorrectly. Specifically, the connection error is used to indicate that the helium filling pipeline is connected incorrectly, for example Figure 1 C1 and C2 are connected in reverse.

[0109] Correspondingly, if the pipeline pressure change information indicates that the pipeline pressure value decreases after the vacuum operation, it is determined that there is no connection abnormality. At this time, the electronic device further determines whether there is an airtightness abnormality based on the pipeline pressure change information and / or the cavity pressure change information.

[0110] It is understandable that when there is a connection abnormality, it is impossible to accurately determine whether there is an airtightness abnormality based on the first pressure change information of the target test cavity and the target pipeline. The above-mentioned setting of this embodiment facilitates accurate determination of the cause of the abnormality.

[0111] S302, when the pipeline pressure change information indicates that there is no connection abnormality, if the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline increases and does not remain at the first preset value for a preset period of time after the vacuum operation is stopped, it is determined that the pipeline pressure change information indicates that there is an airtightness abnormality, and is used to indicate that the airtightness of the target pipeline is unqualified.

[0112] S303, if the cavity pressure change information indicates that the cavity pressure value of the target test cavity increases and does not remain at the second preset value for a preset time after the vacuum pumping operation is stopped, it is determined that the cavity pressure change information indicates that there is an airtightness abnormality, and is used to indicate that the airtightness of the target test cavity is unqualified.

[0113] It is understandable that when there is an airtightness problem in the target pipeline, after the vacuuming operation is stopped, the external atmospheric pressure will enter the target pipeline, causing the pipeline pressure value of the target pipeline to increase. Therefore, in this embodiment, the electronic device determines that there is an airtightness problem in the target pipeline when the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline increases after the vacuuming operation is stopped and does not remain at the first preset value for a preset time.

[0114] When the target test cavity has an airtightness problem, after the vacuum pumping operation is stopped, the external atmospheric pressure will enter the target test cavity, causing the cavity pressure value of the target test cavity to increase. Therefore, in this embodiment, the electronic device determines that the target test cavity has an airtightness problem when the cavity pressure change information indicates that the pipeline pressure value of the target test cavity increases after the vacuum pumping operation is stopped and does not remain at the third preset value for a preset time.

[0115] In this embodiment, the first preset value can be specifically 15 mbar, and the second preset value can be specifically 5 mbar. In actual applications, the first preset value, the second preset value and the preset time can be assigned based on experience or a large number of experiments, which is not limited in this embodiment.

[0116] Through the method of this embodiment, the electronic device determines that there is an airtightness problem in the target pipeline only when the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline increases and does not remain at the first preset value for a preset time after the vacuum pumping operation is stopped, and determines that there is an airtightness problem in the target test cavity only when the cavity pressure change information indicates that the cavity pressure value of the target test cavity increases and does not remain at the second preset value for a preset time after the vacuum pumping operation is stopped. Instead of determining that there is an airtightness problem when the corresponding pressure value of the target test cavity or the target pipeline increases, the risk of misjudgment is reduced, which is beneficial to improving detection accuracy.

[0117] In one possible design, the electronic device obtains a target detection request, and in response to the target detection request, obtains pipeline pressure change information and cavity pressure change information.

[0118] The target detection request is used to instruct to perform abnormal detection on the target test cavity, the target pipeline and the corresponding helium filling components.

[0119] Specifically, in this embodiment, the target detection request is triggered based on user needs. The user needs are specifically used to indicate the time when detection is required. Exemplarily, the target detection request may be triggered every preset time interval, or the target detection request may be triggered when the helium detector is started. This is not limited in this embodiment.

[0120] Through this setting, the helium detector can be inspected in time to improve the accuracy of the helium inspection of the battery cell to be tested by the helium detector.

[0121] Accordingly, in one possible design, the electronic device responds to the target detection request and opens the vacuum pump valve corresponding to the target test cavity to perform a vacuum operation on the target test cavity and the target pipeline; records the cavity pressure change of the target test cavity after the vacuum operation is started, and the pipeline pressure change of the target pipeline after the vacuum operation is started, and uses the pipeline pressure change information as the pipeline pressure change information, and the cavity pressure change information as the cavity pressure change information.

[0122] In this embodiment, a vacuum pipeline is provided between the target test cavity and the chamber vacuum pump, and a vacuum pump valve is provided on the vacuum pipeline. In addition, the target test cavity is only used to place one battery cell to be tested.

[0123] On this basis, as an example, when the electronic device receives a target detection request, it opens the corresponding vacuum pump valve to connect the chamber vacuum pump to the target test chamber, and controls the chamber vacuum pump to evacuate the target test chamber. The electronic device obtains and records the changes in the cavity pressure value through the cavity pressure sensor, and obtains and records the changes in the pipeline pressure value through the pipeline pressure sensor.

[0124] Furthermore, the electronic device determines whether there is a connection abnormality based on the change in the above-mentioned pipeline pressure value. When there is no connection abnormality, the electronic device closes the vacuum pump valve, obtains and records the change in the pipeline pressure value through the pipeline pressure sensor, and uses this part of the change as the pipeline pressure change information, obtains and records the change in the cavity pressure value at this time through the cavity pressure sensor, and uses this part of the change as the cavity pressure change information. The electronic device further determines whether there is an airtightness abnormality based on the pipeline pressure change information and the cavity pressure change information.

[0125] Through the above settings, when the electronic device obtains a target detection request, it can obtain the corresponding first pressure change information by controlling the corresponding vacuum pump valve. The logic is simple and it is convenient for rapid response.

[0126] S304: When there is no connection abnormality and airtightness abnormality, determine whether the pipeline pressure change information and the cavity pressure change information meet a preset condition.

[0127] It is understandable that the target pipeline and the target test cavity may have airtightness problems at the same time. When the target pipeline and / or the target test cavity have airtightness problems, the electronic device determines that there is an airtightness abnormality.

[0128] Furthermore, when there is a connection abnormality and / or airtightness abnormality, the electronic device determines that the pipeline pressure change information and the cavity pressure change information do not meet the preset conditions; otherwise, the electronic device determines that the pipeline pressure change information and the cavity pressure change information meet the preset conditions.

[0129] S305, obtaining second pressure change information before the helium filling operation is completed, and a target time taken to complete the helium filling.

[0130] The electronic device obtains the second pressure change information through the pipeline pressure sensor corresponding to the target pipeline, and obtains the target duration through the timing module in the helium detector. Specifically, the timing module is configured to start timing when it detects that the helium detection component is charging the battery cell to be tested through the target pipeline.

[0131] It is understandable that when the battery cell to be tested is filled with helium to a preset pressure value, the filling of helium is considered complete. The preset pressure value is generally set to 750 mbar.

[0132] In this embodiment, the electronic device determines whether there is an abnormality in the helium filling component and the target pipeline based on the second pressure change information and the target duration. It can be understood that the electronic device determines whether there is an abnormality in the helium filling component and the target pipeline based on the easily obtained second pressure change information and the target duration, and the process is simple, which is convenient for improving the efficiency of abnormality detection.

[0133] S306, when the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is less than the first value, it is determined that there is an abnormality in the target pipeline and / or the helium filling component, and the abnormality in the target pipeline is used to indicate that the target pipeline has a bend and / or a blockage defect, and the abnormality in the helium filling component is used to indicate that the helium filling speed regulating valve in the helium filling component is improperly adjusted.

[0134] S307, if the target duration is not within the preset range and is greater than the second value, it is determined that there is an abnormality in the helium filling component, and the abnormality in the helium filling component is used to indicate that there is a defect in the helium filling component such as insufficient helium and improper adjustment of the helium filling speed regulating valve.

[0135] Specifically, the third preset value is the above-mentioned preset pressure value. When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, the electronic device obtains the target duration at this time through the timing module, and determines whether there is an abnormality in the target pipeline and / or helium filling component by determining whether the target duration is within the preset range.

[0136] Among them, the preset range is obtained based on experience or a large number of experiments, the first value is the minimum value in the preset range, and the second value is the maximum value in the preset range. In this embodiment, the preset range is configured as 3 seconds-10 seconds, and accordingly, the first value is 3 seconds and the second value is 10 seconds.

[0137] It is understandable that when the helium filling speed is too fast, or the target pipeline is bent, or the target pipeline is blocked, the pipeline pressure value will rise too fast. Therefore, in this embodiment, when the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is less than the first value, the electronic device determines that there is an abnormality in the target pipeline and / or the helium filling component. More specifically, it is determined that there is a bend and / or blockage in the target pipeline, and / or the helium filling speed regulating valve of the helium filling component has the defect of adjusting too fast.

[0138] Insufficient helium or improper adjustment of the helium filling speed regulating valve will cause the pipeline pressure value to rise too slowly. Therefore, in this embodiment, when the target time is greater than the second value, the electronic device determines that there is an abnormality in the helium filling component, and more specifically, determines that there is insufficient helium and / or the helium filling speed regulating valve is adjusted too slowly.

[0139] Through the method of this embodiment, it is possible to determine whether there is an abnormality in the target pipeline and the helium filling component based on the easily obtained second pressure change information and the target duration, and the specific cause of the abnormality can be determined, while having the advantage of simple logic.

[0140] In a possible design, when the first pressure change information meets the preset conditions and there is no abnormality in the helium filling component and the target pipeline, the feedback detection pass information is fed back; when the first pressure change information does not meet the preset conditions, and / or there is an abnormality in the helium filling component, and / or there is an abnormality in the target pipeline, the feedback detection fail information is fed back.

[0141] In this embodiment, when there is no abnormality, the electronic device feeds back information that the detection is passed. When there is an abnormality in any part, the electronic device feeds back information that the detection is not passed. Specifically, the information that the detection is not passed includes the specific cause of the abnormality.

[0142] This setting helps relevant staff to know the test results in a timely manner, and when the test fails, they can know the cause of the abnormality in a timely manner.

[0143] In a possible design, when the detection pass information is fed back, the target test chamber is filled with nitrogen and evacuated, and the helium in the battery cell to be tested is recovered.

[0144] In this embodiment, the helium detector includes a recovery device, which is specifically used to recover the remaining helium in the battery cell to be tested. Figure 4 The internal gas circuit diagram of a product valve island provided in an embodiment of the present application is as follows: Figure 4 As shown, for each helium filling pipeline, the product valve island is equipped with a corresponding helium filling gas circuit, atmospheric gas circuit, and helium recovery gas circuit. Corresponding valves are set on the corresponding gas circuits. When helium filling or vacuuming is required, the corresponding valves need to be opened. Figure 4 The detection position 1 corresponds to Figure 1 The C1 pipeline in the test position is detected through P1. The detection position 2 corresponds to Figure 1 The C2 pipeline in the circuit detects the pressure at this position through P2.

[0145] When the electronic device recovers the remaining helium in the battery cell to be tested through the recovery device, it is necessary to open Figure 4 The helium recovery valve on the helium recovery gas path shown in FIG. 1 is used to recover the remaining helium. In addition, the electronic device opens the corresponding vacuum pump valve to evacuate the target test cavity, and opens the nitrogen filling valve to complete the cavity cleaning process of the target test cavity.

[0146] By clearing the target test cavity, the residual helium in the target test cavity can be removed and recovered, so that on the one hand, the helium detector can accurately detect the helium leakage of the battery cell to be tested during the helium test, which is conducive to ensuring the accuracy of the test results. On the other hand, it can effectively save costs.

[0147] As an example, Figure 5 A flowchart of an abnormality detection method for a helium detector provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, for the target pipeline and target test cavity corresponding to any battery cell to be tested, at the beginning of the test, the target test cavity and the target pipeline are first vacuumed, and it is determined whether the pipeline pressure value drops normally. If not, the test process is terminated; if so, when the target test cavity and the target pipeline reach a vacuum state, the vacuuming operation is stopped and a pressure holding test is performed. Specifically, it is determined whether the cavity pressure value increases and fails to maintain the preset time at the second preset value, and whether the pipeline pressure value increases and fails to maintain the preset time at the first preset value. If so, the test process is terminated; if not, the battery cell to be tested is further filled with helium, and based on the target time and preset range for completing the helium filling operation, it is determined whether there is an abnormality in the target pipeline and the helium filling component, and then the test process is terminated after the helium recovery operation.

[0148] It is understandable that in actual applications, after determining whether there is an abnormality in the target pipeline and the helium filling component based on the target duration and the preset range, the detection process can also be ended directly, which is not limited in this embodiment.

[0149] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0150] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0151] The above embodiments introduce a method for detecting anomalies of a helium detector from the perspective of a method flow. The following embodiments introduce an abnormality detection device for a helium detector from the perspective of a virtual module or a virtual unit. For details, please refer to the following embodiments.

[0152] The embodiment of the present application also provides an abnormality detection device for a helium detector, which is used to implement the method in the above method embodiment. Figure 6 A schematic diagram of the structure of an abnormality detection device of a helium detector provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, in this embodiment, the abnormality detection device of the helium detector may include:

[0153] The determination module 61 is used to determine, for any cell to be tested, first pressure change information of a target test cavity where the cell to be tested is placed and / or a target pipeline to be connected to the cell to be tested after a vacuum operation; wherein the vacuum operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the cell to be tested;

[0154] The detection module 62 is used to control the target pipeline to be connected to the battery cell to be tested, and the helium filling component to perform helium filling operation on the battery cell to be tested through the target pipeline when the first pressure change information meets the preset conditions, and determine whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

[0155] In a possible implementation of the embodiment of the present application, the detection module 62 is further configured to:

[0156] When the first pressure change information includes pipeline pressure change information of the target pipeline after the vacuum operation and cavity pressure change information of the target test cavity after the vacuum operation, determine whether there is a connection abnormality and an airtightness abnormality according to the pipeline pressure change information and the cavity pressure change information; the connection abnormality is used to indicate that the target pipeline is incorrectly connected to the target test cavity, and the airtightness abnormality is used to indicate that the airtightness of the target pipeline and / or the target test cavity is unqualified;

[0157] When there is no connection abnormality and airtightness abnormality, it is determined that the pipeline pressure change information and the cavity pressure change information meet the preset conditions.

[0158] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0159] When the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline has not decreased, determining that the pipeline pressure change information indicates that there is a connection abnormality;

[0160] When the pipeline pressure change information indicates that there is no connection abnormality, it is determined whether there is an airtightness abnormality based on the pipeline pressure change information and / or the cavity pressure change information.

[0161] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0162] If the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline increases and does not remain at the first preset value for a preset period of time after the vacuum operation is stopped, it is determined that the pipeline pressure change information indicates that there is an airtightness abnormality and is used to indicate that the airtightness of the target pipeline is unqualified.

[0163] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0164] If the cavity pressure change information indicates that the cavity pressure value of the target test cavity increases and does not remain at the second preset value for a preset period of time after the vacuum pumping operation is stopped, it is determined that the cavity pressure change information indicates an airtightness abnormality and is used to indicate that the airtightness of the target test cavity is unqualified.

[0165] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0166] Obtaining the second pressure change information before the helium filling operation is completed, and the target time taken to complete the helium filling;

[0167] Based on the second pressure change information and the target duration, it is determined whether there is an abnormality in the helium filling component and the target pipeline.

[0168] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0169] When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is less than the first value, it is determined that there is an abnormality in the target pipeline and / or an abnormality in the helium filling component, and the abnormality in the target pipeline is used to indicate that the target pipeline has a bend and / or a blockage defect, and the abnormality in the helium filling component is used to indicate that the helium filling speed regulating valve of the helium filling component is improperly adjusted; the first value is the minimum value in the preset range.

[0170] In a possible implementation of the embodiment of the present application, the detection module 62 is specifically used to:

[0171] When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is greater than the second value, it is determined that there is an abnormality in the helium filling component, and the abnormality in the helium filling component is used to indicate that there is a defect in the helium filling component such as insufficient helium and improper adjustment of the helium filling speed regulating valve of the helium filling component; the second value is the maximum value in the preset range.

[0172] In a possible implementation of the embodiment of the present application, the determination module 61 is specifically used to:

[0173] Obtain a target detection request; the target detection request is used to instruct to perform abnormal detection on the target test cavity, the target pipeline and the corresponding helium filling component;

[0174] In response to the target detection request, the pipeline pressure change information and the cavity pressure change information are obtained.

[0175] In a possible implementation of the embodiment of the present application, the determination module 61 is specifically used to:

[0176] In response to the target detection request, the vacuum pump valve corresponding to the target test cavity is opened to perform a vacuum operation on the target test cavity and the target pipeline;

[0177] Record the pipeline pressure change of the target pipeline after the vacuum operation starts, and the cavity pressure change of the target test cavity after the vacuum operation starts, wherein the pipeline pressure change is the pipeline pressure change information, and the cavity pressure change is the cavity pressure change information.

[0178] In a possible implementation manner of the embodiment of the present application, the device further includes a feedback module (not shown in the figure), and the feedback module is used to:

[0179] When the first pressure change information meets the preset conditions and there is no abnormality in the helium filling component and the target pipeline, feedback of the detection pass information is provided;

[0180] When the first pressure change information does not meet the preset conditions, and / or there is an abnormality in the helium filling component, and / or there is an abnormality in the target pipeline, the detection failure information is fed back.

[0181] In a possible implementation manner of the embodiment of the present application, the device further includes a processing module (not shown in the figure), and the processing module is used to:

[0182] When the test pass information is fed back, the target test cavity is filled with nitrogen and evacuated, and the helium in the battery cell to be tested is recovered.

[0183] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0184] An electronic device is provided in an embodiment of the present application. Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, Figure 7 The electronic device shown includes: a processor 71 and a memory 72. The processor 71 and the memory 72 are connected, such as through a bus 73. Optionally, the electronic device may further include a transceiver 74. It should be noted that in actual applications, the transceiver 74 is not limited to one, and the structure of the electronic device does not constitute a limitation on the embodiments of the present application.

[0185] The processor 71 may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor 71 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0186] The bus 73 may include a path to transmit information between the above components. The bus 73 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus 73 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0187] The memory 72 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0188] The memory 72 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 71. The processor 71 is used to execute the application code stored in the memory 72 to implement the contents shown in the above method embodiment.

[0189] The present application also provides a computer-readable storage medium, which may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes. Specifically, the computer-readable storage medium stores program instructions, and the program instructions are used to implement the service message processing methods in the above-mentioned embodiments.

[0190] A computer program product is also provided in an embodiment of the present application, including a computer program. When the computer program is executed by a processor, the technical solution of the above-mentioned method embodiment is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0191] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0192] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0193] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for detecting abnormality of a helium detector, characterized in that: The helium detector comprises a helium filling assembly and at least one pipeline; the helium detector is used to perform helium inspection on at least one battery cell to be tested; the method comprises: For any cell to be tested, determine the first pressure change information of the target test cavity where the cell to be tested is placed and / or the target pipeline to be connected to the cell to be tested after the vacuum operation; wherein the vacuum operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the cell to be tested; If the first pressure change information meets a preset condition, the target pipeline is controlled to be connected to the battery cell to be tested, the helium filling component performs a helium filling operation on the battery cell to be tested through the target pipeline, and it is determined whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

2. The method according to claim 1, characterized in that When the first pressure change information includes pipeline pressure change information of the target pipeline after the vacuum operation and cavity pressure change information of the target test cavity after the vacuum operation, the method further includes: Determine whether there is a connection abnormality and an airtightness abnormality according to the pipeline pressure change information and the cavity pressure change information; the connection abnormality is used to indicate that the target pipeline is incorrectly connected to the target test cavity, and the airtightness abnormality is used to indicate that the airtightness of the target pipeline and / or the target test cavity is unqualified; When the connection abnormality and the airtightness abnormality do not exist, it is determined that the pipeline pressure change information and the cavity pressure change information meet the preset condition.

3. The method according to claim 2, characterized in that The determining whether there is a connection abnormality and an airtightness abnormality according to the pipeline pressure change information and the cavity pressure change information includes: When the pipeline pressure change information indicates that the pipeline pressure value of the target pipeline has not decreased, determining that the pipeline pressure change information indicates that the connection abnormality exists; When the pipeline pressure change information indicates that the connection abnormality does not exist, it is determined whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information.

4. The method according to claim 3, characterized in that The determining whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information includes: If the pipeline pressure change information indicates that after the vacuum pumping operation of the target pipeline is stopped, the pipeline pressure value increases and does not remain at the first preset value for a preset period of time, it is determined that the pipeline pressure change information indicates the presence of the airtightness abnormality and is used to indicate that the airtightness of the target pipeline is unqualified.

5. The method according to claim 3, characterized in that: The determining whether the airtightness abnormality exists according to the pipeline pressure change information and / or the cavity pressure change information includes: If the cavity pressure change information indicates that the cavity pressure value of the target test cavity increases and does not remain at the second preset value for a preset period of time after the vacuum pumping operation is stopped, it is determined that the cavity pressure change information indicates the presence of the airtightness abnormality and is used to indicate that the airtightness of the target test cavity is unqualified.

6. The method according to any one of claims 1 to 5, characterized in that: The determining whether the helium filling component and / or the target pipeline is abnormal through the helium filling operation includes: Obtaining the second pressure change information before the helium filling operation is completed, and the target time taken to complete the helium filling; Based on the second pressure change information and the target duration, it is determined whether there is an abnormality in the helium filling component and the target pipeline.

7. The method according to claim 6, characterized in that The determining whether the helium filling component and the target pipeline are abnormal based on the second pressure change information and the target duration includes: When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is less than the first value, it is determined that there is an abnormality in the target pipeline and / or an abnormality in the helium filling component, and the abnormality in the target pipeline is used to indicate that there are bending and / or blockage defects in the target pipeline, and the abnormality in the helium filling component is used to indicate that the helium filling speed regulating valve of the helium filling component is improperly adjusted; the first value is the minimum value in the preset range.

8. The method according to claim 6, characterized in that The determining whether the helium filling component and the target pipeline are abnormal based on the second pressure change information and the target duration includes: When the second pressure change information indicates that the pipeline pressure value reaches the third preset value, if the target duration is not within the preset range and is greater than the second value, it is determined that there is an abnormality in the helium filling component, and the abnormality in the helium filling component is used to indicate that there is a defect of insufficient helium in the helium filling component and improper adjustment of the helium filling speed regulating valve of the helium filling component; the second value is the maximum value in the preset range.

9. The method according to any one of claims 2 to 5, characterized in that: The determining of first pressure change information of a target test cavity where the battery cell to be tested is placed and / or a target pipeline to be connected to the battery cell to be tested after a vacuum operation includes: Obtaining a target detection request; the target detection request is used to instruct to perform abnormal detection on the target test cavity, the target pipeline and the corresponding helium filling component; In response to the target detection request, the pipeline pressure change information and the cavity pressure change information are acquired.

10. The method according to claim 9, characterized in that The step of responding to the target detection request and acquiring the pipeline pressure change information and the cavity pressure change information includes: In response to the target detection request, opening a vacuum pump valve corresponding to the target test cavity to perform a vacuum operation on the target test cavity and the target pipeline; Record the pipeline pressure change of the target pipeline after the vacuum operation starts, and the cavity pressure change of the target test cavity after the vacuum operation starts, wherein the pipeline pressure change is the pipeline pressure change information, and the cavity pressure change is the cavity pressure change information.

11. The method according to claims 1-5, characterized in that: The method further comprises: When the first pressure change information satisfies the preset condition and there is no abnormality in the helium filling component and the target pipeline, feeding back detection pass information; When the first pressure change information does not satisfy the preset condition, and / or the helium filling component has an abnormality, and / or the target pipeline has an abnormality, detection failure information is fed back.

12. The method according to claim 11, characterized in that The method further comprises: When the detection pass information is fed back, the target test cavity is nitrogen-filled and vacuum-evacuated, and the helium in the battery cell to be tested is recovered.

13. An abnormality detection device for a helium detector, characterized in that: The helium detector comprises a helium filling assembly and at least one pipeline, and is used to perform helium inspection on at least one battery cell to be tested; the device comprises: A determination module, for determining, for any cell to be tested, first pressure change information of a target test cavity in which the cell to be tested is placed and / or a target pipeline to be connected to the cell to be tested after a vacuum operation; wherein the vacuum operation is performed on the target test cavity when the target pipeline is inserted into the target test cavity and is not connected to the cell to be tested; The detection module is used to control the target pipeline to be connected to the battery cell to be tested, the helium filling component to perform a helium filling operation on the battery cell to be tested through the target pipeline when the first pressure change information meets a preset condition, and determine whether there is an abnormality in the helium filling component and / or the target pipeline through the helium filling operation.

14. An electronic device, characterized in that: The electronic device comprises a processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 12 when executed by a processor.

16. A computer program product, characterized in that The method comprises a computer program, which implements the method according to any one of claims 1 to 12 when being executed by a processor.

17. A helium detector, characterized in that: It includes at least one test chamber, at least one pipeline, a helium filling component, and electronic equipment; wherein, The test cavity is used to place at least one battery cell to be tested; The pipeline is inserted into any test cavity and is used to connect to the helium filling port of the test cell when the test cell in the test cavity is subjected to helium inspection, so that the helium filling component can perform helium filling operation on the test cell through the pipeline; The electronic device is used to execute the abnormality detection method of the helium detector according to any one of claims 1-12.

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