Explosion-proof valve pressure relief area checking method, computer equipment and storage medium

Abstract

The invention provides an explosion-proof valve pressure relief area checking method, computer equipment and a storage medium. The method specifically comprises the steps that in the anti-explosion valve testing process, the gas production pressure relief area and the gas expansion pressure relief area needed before explosion of an anti-explosion valve of a to-be-tested battery pack are obtained; and checking the pressure relief area of the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a method for verifying the pressure relief area of ​​an explosion-proof valve, a computer device, and a storage medium. Background Art

[0002] The battery pack explosion-proof valve is a safety device used to prevent the battery pack from exploding under abnormal circumstances. Its main function is to prevent the battery pack from exploding by quickly releasing pressure when the internal pressure of the battery pack reaches a certain value, thereby ensuring the safety of the battery pack and its surrounding environment. If the explosion-proof valve is not designed properly, it will cause certain safety hazards.

[0003] In the related art, the method for calibrating the pressure relief area of ​​the explosion-proof valve is unreasonable and has a low accuracy rate. Summary of the invention

[0004] The present application provides a method for verifying the pressure relief area of ​​an explosion-proof valve, a computer device, and a storage medium, aiming to improve the verification accuracy of the pressure relief area of ​​an explosion-proof valve by providing a reasonable method for verifying the pressure relief area of ​​an explosion-proof valve.

[0005] In a first aspect, an embodiment of the present application provides a method for verifying the pressure relief area of ​​an explosion-proof valve, the method comprising:

[0006] During the explosion-proof valve test, the gas production pressure relief area and gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes are obtained;

[0007] The pressure relief area of ​​the explosion-proof valve is checked according to the gas production pressure relief area and the gas expansion pressure relief area.

[0008] In a second aspect, an embodiment of the present application provides a device for checking the pressure relief area of ​​an explosion-proof valve, the device comprising:

[0009] The first acquisition unit is used to acquire the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test;

[0010] The first calibration unit is used to calibrate the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area.

[0011] In a third aspect, an embodiment of the present application provides a computer device, the computer device comprising:

[0012] one or more processors;

[0013] Memory; and

[0014] One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the explosion-proof valve pressure relief area calibration method as described in the first aspect.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the steps in the method for calibrating the pressure relief area of ​​an explosion-proof valve as described in the first aspect.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program or instructions, which, when executed by a processor, perform the steps in the method for calibrating the pressure relief area of ​​an explosion-proof valve as described in the first aspect.

[0017] In the embodiment of the present application, during the explosion-proof valve test process, the gas production pressure relief area and the gas expansion pressure relief area required for the explosion-proof valve of the battery pack to be tested before the explosion are obtained and analyzed. Not only the gas production pressure relief area required before the explosion-proof valve explodes but also the pressure relief area required due to the expansion of the original gas in the inner cavity of the battery pack is taken into account. As a result, the reference data of the calibration lock is made more accurate, the accuracy of the explosion-proof valve calibration is improved, and the safety of the explosion-proof valve is thereby improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of an application scenario of the method for verifying the pressure relief area of ​​an explosion-proof valve provided in an embodiment of the present application;

[0020] Figure 2 It is a schematic flow chart of an embodiment of a method for verifying the pressure relief area of ​​an explosion-proof valve provided in an embodiment of the present application;

[0021] Figure 3 It is a schematic structural diagram of an embodiment of a device for checking the pressure relief area of ​​an explosion-proof valve provided in an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of an embodiment of a computer device provided in the embodiments of the present application. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0024] Because in the related technology, there are unreasonable situations in the verification method of the pressure relief area of ​​the explosion-proof valve, for example, only considering, the accuracy is low.

[0025] In view of this, the embodiments of the present application provide a method for calibrating the pressure relief area of ​​an explosion-proof valve, a computer device, and a storage medium, which can obtain the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested exploded during the explosion-proof valve test, and analyze them. Not only the gas production pressure relief area required before the explosion-proof valve explodes, but also the pressure relief area required due to the expansion of the original gas in the inner cavity of the battery pack is taken into account. As a result, the reference data of the calibration lock is made more accurate, the accuracy of the explosion-proof valve calibration is improved, and the safety of the explosion-proof valve is thereby improved.

[0026] See also Figure 1 The embodiments of the present application can be applied to Figure 1 The application scenario shown includes a terminal device 102 and a server 104. The terminal device 102 may be a device including both receiving and transmitting hardware, that is, a device having receiving and transmitting hardware capable of performing bidirectional communication on a bidirectional communication link. The terminal device 102 and the server 104 may perform bidirectional communication via a network.

[0027] Exemplarily, the terminal device 102 obtains the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes; and verifies the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area. Alternatively, the above steps may also be performed by the server 104, and the terminal device 102 is, for example, a test terminal, and the terminal device 102 receives the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes sent by the server 104, and verifies the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area. Alternatively, the above method is executed collaboratively by the terminal device 102 and the server 104, for example, the terminal device 102 may call the verification data of the server 104, or the terminal device 102 may download the verification data from the server 104 and store it in the local storage space, and so on.

[0028] The terminal device includes but is not limited to one or more of a mobile phone, a computer, an IoT device, a test device, and a portable wearable device. The IoT device may be a test device. The portable wearable device may be one or more of a smart watch, a smart bracelet, smart glasses, and a head-mounted device.

[0029] The server includes but is not limited to one or more of mobile phones, computers, IoT devices, testing equipment, and portable wearable devices.

[0030] The following is a detailed description of the embodiments in conjunction with the accompanying drawings. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments. Although the logical order is shown in the flow chart, in some cases, the steps shown or described may be performed in an order different from that shown in the accompanying drawings.

[0031] See also Figure 2 , a method for checking the pressure relief area of ​​an explosion-proof valve is provided, and the method is applicable to computer equipment. The following is an example of the method being applied to a computer equipment, and the method includes steps 201-202:

[0032] 201. During the explosion-proof valve test, obtain the gas production pressure relief area and gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes.

[0033] The explosion-proof valve test can include an adiabatic accelerated rate calorimetry (ARC) test on the battery. Specifically, it is a test method used to evaluate the thermal runaway behavior of materials or batteries under adiabatic conditions. The test is designed based on the adiabatic principle, can use a larger sample amount, and has high sensitivity, and can accurately measure the initial temperature, temperature and pressure change curves of the sample during thermal decomposition over time.

[0034] It should be noted that the above-mentioned battery can be a battery pack or a battery cell in a battery pack.

[0035] Specifically, the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes can be obtained through experimental testing, or parameters such as the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes can be pre-acquired and pre-stored in the corresponding target storage device. When it is necessary to perform step 202, the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes can be obtained by calling or reading the target storage device.

[0036] For details on how to obtain the gas production pressure relief area and gas expansion pressure relief area required before the explosion-proof valve of the tested battery pack explodes through experimental testing, please refer to the introduction of the following specific embodiments.

[0037] In some embodiments, obtaining the gas production and pressure relief area required for the explosion-proof valve of the battery pack to be tested before it explodes during the explosion-proof valve test includes: obtaining the gas production rate of the battery pack to be tested during the explosion-proof valve test; obtaining the straight-through area value and the air permeability of the explosion-proof valve of the battery pack to be tested; and determining the gas production and pressure relief area required for the explosion-proof valve of the battery pack to be tested before it explodes during the explosion-proof valve test based on the gas production rate, the straight-through area value and the air permeability.

[0038] Among them, the gas production rate refers to the amount of gas generated per unit time during battery operation or thermal runaway, the straight-through area value of the explosion-proof valve refers to the maximum cross-sectional area value allowed for gas to pass through the explosion-proof valve, and the air permeability refers to the amount of gas passing through the explosion-proof valve per unit time.

[0039] Optionally, the gas generation rate of the battery pack may be obtained by performing an ARC test experiment on the battery.

[0040] Optionally, the explosion-proof valve design may include a through hole stacked barrier plate structure, which has protective steel sheets on the sides and circular holes and arc-shaped air permeable through holes inside. To measure the through area, the following steps can be used:

[0041] Physical measurement method: directly measure the size of the straight-through hole and the blocking cross plate inside the explosion-proof valve, and then calculate the total cross-sectional area.

[0042] Image measurement method: Use high-precision image measurement equipment to scan the internal structure of the explosion-proof valve, obtain detailed two-dimensional or three-dimensional images, and then calculate the straight-through area through image processing software.

[0043] Optionally, the air permeability measurement needs to be performed under a specific pressure difference to ensure the accuracy of the result. The following are the specific measurement steps:

[0044] Establish a test environment: Install the explosion-proof valve in a sealed test environment to ensure that there will be no external interference during the test.

[0045] Apply a pressure differential: Apply a known pressure differential across the explosion proof valve, such as using compressed air or other gas source.

[0046] Record gas flow: Use a flow meter or other gas flow measurement device to record the amount of gas passing through the explosion-proof valve within a certain period of time.

[0047] Calculate the air permeability: Calculate the air permeability based on the recorded gas flow and the applied pressure difference. The formula is: air permeability = flow (volume / time) / pressure difference (pressure).

[0048] It should be noted that in order to avoid the influence of environmental factors on the test results, it is necessary to ensure that the temperature, humidity and other conditions of the test environment meet the standard requirements. In order to improve the reliability of the measurement results, multiple repeated tests can be performed and the average value is taken as the final result.

[0049] In other optional methods, the straight-through area value and the air permeability may also be provided directly by the manufacturer.

[0050] Optionally, after obtaining the gas production rate of the battery pack to be tested during the explosion-proof valve test and the straight-through area value and air permeability of the explosion-proof valve of the battery pack to be tested, the gas production and pressure relief area S required before the explosion of the explosion-proof valve of the battery pack to be tested during the explosion-proof valve test can be calculated by the following formula (1):

[0051] S=(V Q *S1) / V T (1)

[0052] Among them, S is the gas production pressure relief area, V Q is the gas production rate after the single cell fails, S1 is the straight-through area value of the explosion-proof valve, V T It is the air permeability of explosion-proof valve.

[0053] In some embodiments, obtaining the gas expansion and pressure relief area required for the explosion-proof valve of the battery pack to be tested before it explodes during the explosion-proof valve test may specifically include: obtaining the straight-through area value and the air permeability of the explosion-proof valve of the battery pack to be tested; obtaining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test; and determining the gas expansion and pressure relief area required for the explosion-proof valve of the battery pack to be tested before it explodes during the explosion-proof valve test based on the gas expansion rate, the straight-through area value and the air permeability.

[0054] Optionally, obtaining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test includes: obtaining the volume value of the battery pack to be tested; obtaining the temperature difference value of the battery pack to be tested within a preset time period; and determining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test based on the volume value, the temperature difference value and the duration value corresponding to the preset time period.

[0055] Among them, the volume value refers to the net volume value in the battery pack, which can be obtained by subtracting the volume of the battery module inside the battery pack from the volume of the battery pack. The preset time period can be the temperature change time period of thermal runaway (that is, the preset time period is equivalent to the temperature change time period of thermal runaway). The time period can be obtained through actual experimental measurement or preset, and there is no specific limitation. The temperature difference value refers to the maximum temperature minus the initial temperature during the temperature change process, where the initial temperature and the maximum temperature can be collected using corresponding temperature detection equipment.

[0056] Optionally, after obtaining the volume value, the temperature difference value and the duration value corresponding to the preset time period, the gas expansion rate V3 of the battery pack to be tested after temperature change during the explosion-proof valve test can be calculated by the following formula (2):

[0057] V3=(V*ΔT) / 273t (2)

[0058] Among them, V3 is the gas expansion rate after temperature change, V is the net volume in the battery pack, and ΔT is the temperature difference after temperature change.

[0059] Optionally, after obtaining the gas expansion rate, the straight-through area value and the air permeability, the gas expansion pressure relief area S2 required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test can be calculated by the following formula (3):

[0060] S2=(V3*S1) / V T (3)

[0061] Among them, S2 is the pressure relief area required for gas expansion, V3 is the gas expansion rate after temperature change, S1 is the straight-through area value of the explosion-proof valve, V T It is the air permeability of explosion-proof valve.

[0062] 202. Check the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area.

[0063] In some embodiments, the step of calibrating the pressure relief area of ​​the explosion-proof valve based on the gas production pressure relief area and the gas expansion pressure relief area may specifically include: determining the area and value of the gas production pressure relief area and the gas expansion pressure relief area; and calibrating the pressure relief area of ​​the explosion-proof valve based on the area and value.

[0064] Optionally, the area and value of the gas production pressure relief area and the gas expansion pressure relief area may be determined by using the following formula (4):

[0065] S3=S+S2 (4)

[0066] Among them, S3 is the sum of the gas production pressure relief area and the gas expansion pressure relief area, S is the gas production pressure relief area, and S2 is the gas expansion pressure relief area.

[0067] Optionally, verifying the pressure relief area of ​​the explosion-proof valve according to the area sum value includes: optimizing the area sum value according to a preset safety factor to obtain an optimized target area value; and verifying the pressure relief area of ​​the explosion-proof valve according to the target area value.

[0068] In actual situations, there are errors in parameters such as the net volume in the battery pack and factors such as sudden changes in temperature, which leads to certain errors in the calculated area and value.

[0069] In view of this, the embodiment of the present application introduces a safety factor to optimize the area and value calculated previously, so as to further improve the rationality and accuracy of the verification.

[0070] The safety factor may be preset or obtained through empirical methods, and the specific method of obtaining the safety factor is not limited.

[0071] Optionally, the area and value can be optimized by the following formula (5):

[0072] S4=a*S3 (5)

[0073] Among them, S4 is the target area value after optimization, a is the safety factor, and S3 is the area sum value.

[0074] Optionally, verifying the pressure relief area of ​​the explosion-proof valve according to the target area value includes: acquiring a straight-through area value of the explosion-proof valve; and verifying the pressure relief area of ​​the explosion-proof valve according to a comparison result between the target area value and the straight-through area value.

[0075] Optionally, calibrating the pressure relief area of ​​the explosion-proof valve according to the comparison result of the target area value and the straight-through area value includes: if the comparison result is that the target area value is greater than the straight-through area value, determining that the pressure relief area calibration of the explosion-proof valve fails; if the comparison result is that the target area value is less than or equal to the straight-through area value, determining that the pressure relief area calibration of the explosion-proof valve passes.

[0076] In the embodiment of the present application, by obtaining the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test and analyzing them, not only the gas production pressure relief area required before the explosion-proof valve explodes but also the pressure relief area required due to the expansion of the original gas in the inner cavity of the battery pack is taken into account. As a result, the reference data of the calibration lock is made more accurate, the accuracy of the explosion-proof valve calibration is improved, and the safety of the explosion-proof valve is thereby improved.

[0077] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation 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 part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0078] Based on the same inventive concept, the embodiment of the present application also provides an explosion-proof valve pressure relief area calibration device for implementing the above-mentioned explosion-proof valve pressure relief area calibration method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more explosion-proof valve pressure relief area calibration device embodiments provided below can refer to the limitations of the explosion-proof valve pressure relief area calibration method above, and will not be repeated here.

[0079] See also Figure 3 , a device for checking the pressure relief area of ​​an explosion-proof valve is provided. The device 300 for checking the pressure relief area of ​​an explosion-proof valve can be integrated in a computer device, and includes a first acquisition unit 301 and a first checking unit 302, wherein:

[0080] The first acquisition unit 301 is used to acquire the gas production pressure relief area and the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test;

[0081] The first checking unit 302 is used to check the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area.

[0082] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0083] Determining the area and value of the gas production pressure relief area and the gas expansion pressure relief area;

[0084] The pressure relief area of ​​the explosion-proof valve is checked according to the area and value.

[0085] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0086] Optimizing the area and value according to a preset safety factor to obtain an optimized target area value;

[0087] The pressure relief area of ​​the explosion-proof valve is calibrated according to the target area value.

[0088] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0089] Obtaining a straight-through area value of the explosion-proof valve;

[0090] The pressure relief area of ​​the explosion-proof valve is checked according to the comparison result between the target area value and the straight-through area value.

[0091] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0092] If the comparison result is that the target area value is greater than the straight-through area value, it is determined that the pressure relief area calibration of the explosion-proof valve has failed;

[0093] If the comparison result is that the target area value is less than or equal to the straight-through area value, it is determined that the pressure relief area calibration of the explosion-proof valve has passed.

[0094] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0095] Obtain the gas generation rate of the battery pack under test during the explosion-proof valve test;

[0096] Obtain the straight-through area value and air permeability of the explosion-proof valve of the battery pack to be tested;

[0097] According to the gas production rate, the straight-through area value and the air permeability, the gas production and pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test is determined.

[0098] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0099] Obtain the straight-through area value and air permeability of the explosion-proof valve of the battery pack to be tested;

[0100] Obtaining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test;

[0101] According to the gas expansion rate, the straight-through area value and the air permeability, the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test is determined.

[0102] In some embodiments, the explosion-proof valve pressure relief area calibration device is specifically used for:

[0103] Get the volume value of the battery pack to be tested;

[0104] Obtaining a temperature difference value of the battery pack to be tested within a preset time period;

[0105] According to the volume value, the temperature difference value and the duration value corresponding to the preset time period, the gas expansion rate of the battery pack to be tested after the temperature changes during the explosion-proof valve test is determined.

[0106] In the embodiment of the present application, during the explosion-proof valve test process, the gas production pressure relief area and the gas expansion pressure relief area required for the explosion-proof valve of the battery pack to be tested before the explosion are obtained and analyzed. Not only the gas production pressure relief area required before the explosion-proof valve explodes but also the pressure relief area required due to the expansion of the original gas in the inner cavity of the battery pack is taken into account. As a result, the reference data of the calibration lock is made more accurate, the accuracy of the explosion-proof valve calibration is improved, and the safety of the explosion-proof valve is thereby improved.

[0107] Each module in the above-mentioned devices can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of the processor in the control device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0108] Correspondingly, an embodiment of the present application also provides a computer device, which may be a terminal device or a server.

[0109] like Figure 4 As shown, Figure 4 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. The computer device 1200 includes a processor 1201 having one or more processing cores, a memory 1202 having one or more computer-readable storage media, and a computer program stored in the memory 1202 and executable on the processor. The processor 1201 is electrically connected to the memory 1202. It will be understood by those skilled in the art that the computer device structure shown in the figure does not constitute a limitation on the computer device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0110] The processor 1201 is the control center of the computer device 1200, and uses various interfaces and lines to connect various parts of the entire computer device 1200. By running or loading software programs and / or units stored in the memory 1202, and calling data stored in the memory 1202, the processor 1201 executes various functions of the computer device 1200 and processes data, thereby monitoring the computer device 1200 as a whole. The processor 1201 can be a central processing unit CPU, a graphics processing unit GPU, a network processor (Network Processor, NP), etc., and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application.

[0111] In the embodiment of the present application, the processor 1201 in the computer device 1200 will load the instructions corresponding to the processes of one or more application programs into the memory 1202 according to the following steps, and the processor 1201 will run the application programs stored in the memory 1202, so as to realize various functions, for example: in the explosion-proof valve test process, obtain the gas production pressure relief area and gas expansion pressure relief area required before the explosion of the explosion-proof valve of the battery pack to be tested; check the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area. The specific implementation of each of the above operations can be referred to the previous embodiments, which will not be repeated here.

[0112] Alternatively, if Figure 4 As shown, the computer device 1200 further includes: a touch screen 1203, a radio frequency circuit 1204, an audio circuit 1205, an input unit 1206, and a power supply 1207. The processor 1201 is electrically connected to the touch screen 1203, the radio frequency circuit 1204, the audio circuit 1205, the input unit 1206, and the power supply 1207, respectively. Those skilled in the art can understand that Figure 4 The computer device structure shown in the figure does not constitute a limitation on the computer device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0113] The touch display screen 1203 can be used to display a graphical user interface and receive operation instructions generated by the user acting on the graphical user interface. The touch display screen 1203 may include a display panel and a touch panel. Among them, the display panel may be used to display information input by the user or information provided to the user and various graphical user interfaces of the computer device, which may be composed of graphics, text, icons, videos and any combination thereof. Optionally, the display panel may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED) and the like. The touch panel may be used to collect the user's touch operation on or near it (such as the user using any suitable object or attachment such as a finger, a stylus or the like on the touch panel or near the touch panel), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Optionally, the touch panel may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 1201, and can receive the command sent by the processor 1201 and execute it. The touch panel can cover the display panel. When the touch panel detects a touch operation on or near it, it is transmitted to the processor 1201 to determine the type of touch event, and then the processor 1201 provides corresponding visual output on the display panel according to the type of touch event. In an embodiment of the present application, the touch panel and the display panel can be integrated into the touch display screen 1203 to realize the input and output functions. However, in some embodiments, the touch panel and the touch panel can be used as two independent components to realize the input and output functions. That is, the touch display screen 1203 can also be used as a part of the input unit 1206 to realize the input function.

[0114] The radio frequency circuit 1204 may be used to send and receive radio frequency signals, so as to establish wireless communication with a network device or other computer device through wireless communication, and to send and receive signals between the network device or other computer device.

[0115] The audio circuit 1205 can be used to provide an audio interface between the user and the computer device through a speaker and a microphone. The audio circuit 1205 can transmit the electrical signal converted from the received audio data to the speaker, which is converted into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 1205 and converted into audio data, and then the audio data is output to the processor 1201 for processing, and then sent to another computer device through the radio frequency circuit 1204, or the audio data is output to the memory 1202 for further processing. The audio circuit 1205 may also include an earphone jack to provide communication between an external headset and the computer device.

[0116] The input unit 1206 may be used to receive input numbers, character information or user feature information (such as fingerprint, iris, facial information, etc.), and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0117] The power supply 1207 is used to supply power to various components of the computer device 1200. Optionally, the power supply 1207 can be logically connected to the processor 1201 through a power management system, so that the power management system can manage charging, discharging, and power consumption. The power supply 1207 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0118] although Figure 4 Not shown, the computer device 1200 may also include a camera, a sensor, a wireless fidelity module, a Bluetooth module, etc., which will not be described in detail here.

[0119] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0120] A person of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructions, or by controlling related hardware through instructions. The instructions may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0121] To this end, an embodiment of the present application provides a computer-readable storage medium, in which a plurality of computer programs are stored. The computer program can be loaded by a processor to execute any one of the explosion-proof valve pressure relief area verification methods provided in the embodiments of the present application. The computer program can execute the following steps of the explosion-proof valve pressure relief area verification method: during the explosion-proof valve test, obtain the gas production pressure relief area and gas expansion pressure relief area required before the explosion of the explosion-proof valve of the battery pack to be tested; verify the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area. The specific implementation of each of the above operations can be found in the previous embodiments, which will not be repeated here.

[0122] The computer-readable storage medium may include: a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0123] Since the computer program stored in the computer-readable storage medium can execute any of the explosion-proof valve pressure relief area calibration methods provided in the embodiments of the present application, the beneficial effects that can be achieved by any of the explosion-proof valve pressure relief area calibration methods provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0124] According to one aspect of the present application, a computer program product or a computer program is also provided, the computer program product or the computer program includes a computer instruction, and the computer instruction is stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the method provided in various optional implementations in the above embodiments.

[0125] In the above-mentioned explosion-proof valve pressure relief area verification device, computer-readable storage medium, computer equipment, and computer program product embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and beneficial effects of the above-described explosion-proof valve pressure relief area verification device, computer-readable storage medium, computer program product, computer equipment and its corresponding units can refer to the description of the explosion-proof valve pressure relief area verification method in the above embodiment, and will not be repeated here.

[0126] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are 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.

[0127] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for checking the pressure relief area of ​​an explosion-proof valve, characterized in that: The method comprises: During the explosion-proof valve test, the gas production pressure relief area and gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes are obtained; The pressure relief area of ​​the explosion-proof valve is checked according to the gas production pressure relief area and the gas expansion pressure relief area.

2. The method for verifying the pressure relief area of ​​an explosion-proof valve according to claim 1, characterized in that: The step of checking the pressure relief area of ​​the explosion-proof valve according to the gas production pressure relief area and the gas expansion pressure relief area includes: Determining the area and value of the gas production pressure relief area and the gas expansion pressure relief area; The pressure relief area of ​​the explosion-proof valve is checked according to the area and value.

3. The method for verifying the pressure relief area of ​​an explosion-proof valve according to claim 2, characterized in that: The step of checking the pressure relief area of ​​the explosion-proof valve according to the area and value comprises: Optimizing the area and value according to a preset safety factor to obtain an optimized target area value; The pressure relief area of ​​the explosion-proof valve is calibrated according to the target area value.

4. The method for verifying the pressure relief area of ​​an explosion-proof valve according to claim 3, characterized in that: The step of checking the pressure relief area of ​​the explosion-proof valve according to the target area value comprises: Obtaining a straight-through area value of the explosion-proof valve; The pressure relief area of ​​the explosion-proof valve is checked according to the comparison result between the target area value and the straight-through area value.

5. The method for verifying the pressure relief area of ​​an explosion-proof valve according to claim 4, characterized in that: The step of checking the pressure relief area of ​​the explosion-proof valve according to the comparison result between the target area value and the straight-through area value comprises: If the comparison result is that the target area value is greater than the straight-through area value, it is determined that the pressure relief area calibration of the explosion-proof valve has failed; If the comparison result is that the target area value is less than or equal to the straight-through area value, it is determined that the pressure relief area calibration of the explosion-proof valve has passed.

6. The method for verifying the pressure relief area of ​​an explosion-proof valve according to any one of claims 1 to 5, characterized in that: The step of obtaining the gas production and pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test includes: Obtain the gas generation rate of the battery pack under test during the explosion-proof valve test; Obtain the straight-through area value and air permeability of the explosion-proof valve of the battery pack to be tested; According to the gas production rate, the straight-through area value and the air permeability, the gas production and pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test is determined.

7. The method for verifying the pressure relief area of ​​an explosion-proof valve according to any one of claims 1 to 5, characterized in that: The step of obtaining the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test comprises: Obtain the straight-through area value and air permeability of the explosion-proof valve of the battery pack to be tested; Obtaining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test; According to the gas expansion rate, the straight-through area value and the air permeability, the gas expansion pressure relief area required before the explosion-proof valve of the battery pack to be tested explodes during the explosion-proof valve test is determined.

8. The method for verifying the pressure relief area of ​​an explosion-proof valve according to claim 7, characterized in that: The step of obtaining the gas expansion rate of the battery pack to be tested after temperature change during the explosion-proof valve test includes: Get the volume value of the battery pack to be tested; Obtaining a temperature difference value of the battery pack to be tested within a preset time period; According to the volume value, the temperature difference value and the duration value corresponding to the preset time period, the gas expansion rate of the battery pack to be tested after the temperature changes during the explosion-proof valve test is determined.

9. A computer device, characterized in that: The computer device comprises: one or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and are configured to be executed by the processor to implement the explosion-proof valve pressure relief area calibration method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the method for calibrating the pressure relief area of ​​an explosion-proof valve according to any one of claims 1 to 8.

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