Methods, devices, positioning systems, and computer equipment for determining the location of leaks

Abstract

This application relates to a method, apparatus, positioning system, and computer device for determining the location of a leak. The method includes: controlling an air suction tube to move along the surface of a target battery, causing the air suction tube to draw in leaked air from the target battery; determining a first time point corresponding to the starting point of the air suction tube's movement; and determining a second time point corresponding to the peak value of the response signal generated by a sensor based on the leaked air from the target battery. Then, based on a first duration between the second time point and the first time point and the moving speed of the air suction tube, the location of the leak on the target battery is determined, thereby achieving the localization of the leak location on the target battery.

Description

Technical Field

[0001] This application relates to the field of leak location technology, and in particular to a leak location determination method, apparatus, positioning system, and computer equipment. Background Technology

[0002] The hydrogen-nitrogen leak detection method is a gas tightness detection method based on a gas sensor array. It involves filling the device under test with a mixture of hydrogen and nitrogen gas at a certain pressure and concentration, and then using the gas sensor array to measure the concentration of the leaking gas. Based on the concentration and flow rate of the leaking gas, the amount of gas leaking at any location can be calculated. The hydrogen-nitrogen leak detection method is simple to operate, has high detection accuracy, fast response speed, and low cost, thus offering significant advantages in battery tightness testing.

[0003] During the detection process, the suction tube can be moved along the trajectory of the battery to draw in leaked gas. The gas leaking from the battery is then transmitted to the sensor through the suction tube at a certain suction speed to detect the gas concentration. Based on the detected gas concentration, it is determined whether a leak has occurred at the sealing interface.

[0004] However, it is currently difficult to determine the location of the leak on the battery. Summary of the Invention

[0005] Therefore, it is necessary to provide a method, apparatus, positioning system, and computer equipment for determining the location of a leak hole on a battery, in order to address the above-mentioned technical problems.

[0006] Firstly, this application provides a method for determining the location of a leak. The method includes:

[0007] Control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery;

[0008] The first time point corresponding to the starting point of the inhalation tube movement is determined, and the second time point corresponding to the peak value of the response signal is determined; the response signal is generated by the sensor based on the leakage of the target battery.

[0009] The location of the leak on the target battery is determined based on the first duration between the second time point and the first time point and the moving speed of the suction tube.

[0010] The leak location determination method provided in this application embodiment controls the air intake tube to move along the surface of the target battery, so that the air intake tube draws in the leaking air of the target battery, determines the first time point corresponding to the starting point of the air intake tube's movement, and determines the second time point corresponding to the peak response in the response signal generated by the sensor based on the leaking air of the target battery, and then determines the location of the leak on the target battery based on the first time point between the second time point and the first time point and the moving speed of the air intake tube, thereby realizing the location of the leak on the target battery.

[0011] In one embodiment, determining the location of the leak on the target battery based on a first duration between a second time point and a first time point and the moving speed of the inhalation tube includes:

[0012] Determine the delay duration of the peak response;

[0013] The location of the leak on the target battery is determined based on the first duration, the speed of the suction tube, and the delay duration.

[0014] The method provided in this application determines the location of a leak on a target battery by determining the delay time of the response peak, and based on the first duration, the moving speed of the intake tube, and the delay time. Since the delay time of the response peak is taken into account, the determined location of the leak can be more accurate, thus improving the accuracy of leak location.

[0015] In one embodiment, determining the delay duration of the response peak includes:

[0016] Determine the second duration from when the leak enters the suction tube to when the leak leaves the sensor;

[0017] The delay duration is determined based on the second duration.

[0018] The method provided in this application embodiment determines a second time interval from when the leaked air enters the suction tube to when the leaked air leaves the sensor, and determines a delay time interval based on the second time interval, thereby facilitating the determination of the location of the leak hole on the target battery based on the delay time interval, and improving the accuracy of leak hole location.

[0019] In one embodiment, determining the delay duration based on the second duration includes:

[0020] Obtain the third duration required for the sensor to generate a response signal;

[0021] The delay duration is determined based on the second and third durations.

[0022] The method provided in this application obtains the third duration required for the sensor to generate a response signal, and determines the delay duration based on the second duration and the third duration, thereby achieving a more comprehensive consideration of the delay duration affecting the response peak and further improving the accuracy of leak location.

[0023] In one embodiment, determining a second duration from the time the leak enters the inhalation tube to the time the leak leaves the sensor includes:

[0024] Determine a first ratio between the volume of the inhalation tube and the inhalation velocity of the inhalation tube, and determine a fourth duration of leakage transmission in the inhalation tube based on the first ratio;

[0025] Determine a second ratio between the volume of the chamber and the inhalation rate, and determine a fifth time interval between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio;

[0026] The second duration is determined based on the fourth and fifth durations.

[0027] The method provided in this application determines a first ratio between the volume of the inhalation tube and the inhalation speed of the inhalation tube, determines a fourth duration of leakage transmission in the inhalation tube based on the first ratio, determines a second ratio between the volume of the chamber and the inhalation speed, determines a fifth duration between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio, and then determines a second duration based on the fourth and fifth durations, thereby achieving a more accurate determination of the second duration. This makes the delay duration determined based on the second and third durations more accurate, further improving the accuracy of leak location.

[0028] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0029] In this embodiment of the application, by limiting the range of values ​​for the fifth duration, the value of the fifth duration can be determined more accurately, laying the foundation for determining the delay duration of the response peak, and thus enabling more accurate location of the leak.

[0030] In one embodiment, determining the location of the leak on the target battery based on a first duration, the moving speed of the inhalation tube, and the delay duration includes:

[0031] Determine the duration difference between the first duration and the delay duration;

[0032] Determine the product of the time difference and the speed of the inhalation tube movement;

[0033] The location of the leak on the target battery is determined by the product.

[0034] The method provided in this application determines the time difference between the first time duration and the delay time, determines the product of the time difference and the moving speed of the inhalation tube, and then determines the location of the leak on the target battery based on the product, thereby achieving a more accurate location of the leak on the target battery.

[0035] In one embodiment, the movement speed of the inhalation tube is determined based on test condition information other than the movement speed; the inner diameter of the inhalation tube is determined based on test condition information other than the inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than the inhalation speed.

[0036] In this embodiment, the moving speed of the inhalation tube is determined based on test condition information other than the moving speed; the inner diameter of the inhalation tube is determined based on test condition information other than the inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than the inhalation speed. This enables the inhalation tube to capture a significant response signal even if a small amount of gas leakage is inhaled during its movement, reducing the probability of failing to capture a relatively accurate response peak due to a weak response signal.

[0037] Secondly, this application also provides a device for determining the location of a leak. The device includes:

[0038] The control module is used to control the movement of the suction tube along the surface of the target battery, so that the suction tube draws in the leaking air from the target battery;

[0039] The first determining module is used to determine the first time point corresponding to the starting point of the inhalation tube movement, and to determine the second time point corresponding to the peak value of the response signal; the response signal is generated by the sensor based on the leakage of the target battery.

[0040] The second determining module is used to determine the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the suction tube.

[0041] Thirdly, this application also provides a leak location positioning system, the system including a leak location detection device and a processor, the leak location detection device including an air intake tube, a chamber, and a sensor disposed in the chamber, one end of the air intake tube being connected to the chamber;

[0042] A processor for performing the steps of any of the methods described above.

[0043] In one embodiment, the leak location detection device further includes a movable component, and the suction pipe is connected to the movable component;

[0044] The processor is used to send control commands to the moving components;

[0045] A moving component for controlling the movement of the intake tube along the surface of the target battery based on control commands.

[0046] In one embodiment, a sensor is used to generate a response signal based on the concentration of leaked gas from the target battery discharged into the chamber through the suction tube.

[0047] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method provided in the above embodiments.

[0048] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the steps of the methods provided in the above embodiments.

[0049] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps of the methods provided in the above embodiments.

[0050] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0052] Figure 1 This is an application environment diagram of the leak location determination method provided in the embodiments of this application;

[0053] Figure 2 This is a flowchart illustrating a method for determining the location of a leak according to an embodiment of this application;

[0054] Figure 3 This is a schematic diagram of a leak location determination process provided in an embodiment of this application;

[0055] Figure 4 This is a flowchart illustrating another method for determining the location of a leak provided in an embodiment of this application;

[0056] Figure 5 This is a schematic diagram of the response signal of a sensor provided in an embodiment of this application;

[0057] Figure 6 This is a flowchart illustrating a method for determining delay duration provided in an embodiment of this application;

[0058] Figure 7 This is a flowchart illustrating another method for determining the delay duration provided in an embodiment of this application;

[0059] Figure 8 This is a flowchart illustrating a second duration determination method provided in an embodiment of this application;

[0060] Figure 9This is a flowchart illustrating another method for determining the location of a leak provided in an embodiment of this application;

[0061] Figure 10 This is a schematic diagram of a response signal provided in an embodiment of this application;

[0062] Figure 11 This is a flowchart illustrating another method for determining the location of a leak provided in an embodiment of this application;

[0063] Figure 12 This is one of the structural schematic diagrams of the leak location determination device provided in the embodiments of this application;

[0064] Figure 13 This is a second schematic diagram of the structure of the leak location determination device provided in the embodiments of this application;

[0065] Figure 14 This is the third schematic diagram of the structure of the leak location determination device provided in the embodiments of this application;

[0066] Figure 15 This is a schematic diagram of a leak location determination device provided in an embodiment of this application. Detailed Implementation

[0067] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0069] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0070] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0071] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0072] The hydrogen-nitrogen leak detection method is a gas tightness detection method based on a gas sensor array. It involves filling the device under test with a mixture of hydrogen and nitrogen gas at a certain pressure and concentration, and then using the gas sensor array to measure the concentration of the leaking gas. Based on the concentration and flow rate of the leaking gas, the amount of gas leaking at any location can be calculated. The hydrogen-nitrogen leak detection method is simple to operate, has high detection accuracy, fast response speed, and low cost, thus offering significant advantages in battery tightness testing.

[0073] During the detection process, the suction tube can be moved along the trajectory of the battery to draw in leaked gas. The gas leaking from the battery is then transmitted to the sensor through the suction tube at a certain suction speed to detect the gas concentration. Based on the detected gas concentration, it is determined whether a leak has occurred at the sealing interface.

[0074] However, it is currently difficult to determine the exact location of the leak on the battery.

[0075] To address the aforementioned technical problems, embodiments of this application provide a method for determining the location of a leak, such as... Figure 1 As shown, Figure 1This is an application environment diagram of the leak location determination method provided in this application embodiment. It includes a target battery 11, a suction pipe 12, a chamber 13, a sensor 14 disposed in the chamber 13, and a processor 15. The processor 15 can control the suction pipe to move along the surface of the target battery, causing the suction pipe 12 to draw in leaking gas from the target battery 11. The leaking gas drawn in by the suction pipe 12 is transmitted to the chamber 13. After the sensor 14 in the chamber 13 comes into contact with the leaking gas in the chamber, it generates a response signal based on the gas concentration in the chamber. The sensor 14 sends the response signal to the processor 15. The processor 15 determines the second time point corresponding to the response peak in the response signal and calculates the first duration between the second time point and the first time point corresponding to the starting point of the suction pipe's movement. Based on the first duration and the movement speed of the suction pipe, the location of the leak on the target battery is determined, thus achieving the location of the leak on the target battery.

[0076] Reference Figure 2 , Figure 2 This is a flowchart illustrating a method for determining the location of a leak according to an embodiment of this application. This method is applied to, for example... Figure 1 The processor shown includes the following method:

[0077] S201, control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery.

[0078] Reference Figure 3 , Figure 3 This is a schematic diagram illustrating a leak location determination process provided in an embodiment of this application. The suction pipe 31 can be mounted on a robotic arm, and the processor can send control commands to the robotic arm. Based on these control commands, the robotic arm moves the suction pipe 31 from the starting point 32 along the surface of the target battery. Alternatively, the suction pipe 31 can be mounted on a moving guide rail, and the movement of the moving guide rail can be controlled to move the suction pipe 31 from the starting point 32 along the surface of the target battery 33.

[0079] As the suction pipe 31 moves along the surface of the target battery 33, when it reaches the vicinity of the leak hole 34, the suction pipe 31 draws in the leaking air from the target battery 33 through the leak hole 34. The drawn-in leaking air enters the target battery 33 through the suction pipe 31. Figure 1 In the chamber 13 shown, after the sensor 14 in the chamber 13 comes into contact with the leaking gas, the sensor 14 can generate a response signal based on the concentration of the leaking gas and send the response signal to the processor 15. It should be noted that the generation of the response signal may also be affected by environmental factors such as the temperature and humidity of the leaking gas, that is, the sensor generates a response signal based on the concentration, temperature, humidity, etc. of the leaking gas.

[0080] S202, determine the first time point corresponding to the starting point of the inhalation tube movement, and determine the second time point corresponding to the peak value of the response signal; the response signal is generated by the sensor based on the leakage of the target battery.

[0081] The sensor can be a gas sensor, including but not limited to hydrogen sensors and ethanol sensors.

[0082] The processor can determine the first time point corresponding to the starting point 32 of the inhalation tube's movement. For example, the processor can use the time point at which the control command is sent as the first time point, or the time point at which a response command is received (the command returned by the robotic arm to the processor based on the control command). Alternatively, the processor can record the time point at which the control command is sent as 0, thus determining the first time point corresponding to the starting point of the inhalation tube's movement as 0.

[0083] Since the response signal reflects the correspondence between the response value and a time point, when a response signal is detected by the sensor, a potential leak is discovered. When the response signal shows a peak value, the time point corresponding to that peak value can be used as a second time point. Therefore, the second time point corresponding to the peak value can be determined based on the response signal. In this embodiment, the sensor's response value refers to the ratio between the electrical signal value generated by the sensor after contact with the leaking gas and the electrical signal value of the sensor in the air. The electrical signal value can be a voltage value, a current value, or a resistance value.

[0084] S203, determine the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the inhalation tube.

[0085] In this embodiment, the moving speed of the inhalation tube is a vector, which includes both direction and magnitude, meaning that the inhalation tube has a moving path during its movement.

[0086] In one possible implementation, such as Figure 3 As shown, when the suction pipe 31 moves to the position of the leak 34 on the target battery 33, a response peak appears in the response signal. That is, the second time point corresponding to the response peak is the time point when the suction pipe moves to the leak 34. The first duration can represent the time required for the suction pipe to move from the starting point 32 to the position of the leak 34. Multiplying the first duration by the speed of the suction pipe 31 gives the distance the suction pipe 31 moves from the starting point 32 to the position of the leak 34. Based on this distance, the position of the leak on the target battery can be determined, that is, the position on the surface of the target battery that is the distance from the starting point is taken as the position of the leak.

[0087] In another possible implementation, when the intake pipe 31 moves to the location of the leak 34 in the target battery, the response signal generated by the sensor does not show a peak value due to the sensor's inherent response delay. Instead, the peak value appears after a certain delay. That is, the peak value appears only after the intake pipe 31 has moved to the location of the leak 34. In this case, the delay time can be subtracted from the first time interval to obtain the time difference. Multiplying this time difference by the movement speed of the intake pipe gives the distance the intake pipe travels from the starting point 32 to the location of the leak 34. Based on this distance, the location of the leak 34 on the target battery 33 can be determined; that is, the location of the leak is the point on the surface of the target battery 33 at a distance equal to the distance from the starting point 32. The magnitude of the sensor's inherent response delay is related to the sensor's performance.

[0088] The leak location determination method provided in this application embodiment controls the air intake tube to move along the surface of the target battery, so that the air intake tube draws in the leaking air of the target battery, determines the first time point corresponding to the starting point of the air intake tube's movement, and determines the second time point corresponding to the peak response in the response signal generated by the sensor based on the leaking air of the target battery, and then determines the location of the leak on the target battery based on the first time point between the second time point and the first time point and the moving speed of the air intake tube, thereby realizing the location of the leak on the target battery.

[0089] In one embodiment, such as Figure 4 As shown, Figure 4 This is a flowchart illustrating another method for determining the location of a leak in an embodiment of this application. This embodiment relates to a possible implementation of determining the location of a leak on a target battery based on a first time interval between a second time point and a first time point, and the moving speed of the suction tube. Based on the above embodiment, S203 may include the following steps:

[0090] S401 determines the delay duration of the response peak.

[0091] like Figure 1 As shown, the delay duration may include at least one of the following: the propagation time of the leak in the inhalation tube, the time between the leak entering the chamber and the leak leaving the sensor, and the delay duration caused by the sensor's own response delay.

[0092] like Figure 3 and Figure 5 As shown, Figure 5 This is a schematic diagram of the response signal of a sensor provided in an embodiment of this application. If there is a delay, the time point corresponding to when the suction tube is moved to the position of the leak 34 of the target battery is recorded as t1, such as... Figure 5As shown in the left half of the signal diagram 51, the concentration of leaked gas inhaled into the inhalation tube reaches its maximum value at time t1. However, as shown in the right half of the signal diagram 52, the peak value of the response signal generated by the sensor appears at time t2. That is, the delay time of the peak value is equal to t2-t1.

[0093] For example, if the propagation time of the leak in the inhalation tube is denoted as t... pipe The time from when the leaked air enters the chamber to when it leaves the sensor is denoted as t. box Let t be the delay caused by the sensor's own response delay. delay .

[0094] In one possible implementation, the delay duration of the response peak includes t. pipe In the case of t2-t1=t pipe .

[0095] In another possible implementation, the delay duration of the response peak includes t. pipe and t box In the case of t2-t1=t pipe +t box .

[0096] In another possible implementation, the delay time of the response peak includes t pipe t box and t delay In the case of t2-t1=t pipe +t box +t delay .

[0097] S402, based on the first duration, the moving speed of the inhalation tube, and the delay duration, determine the location of the leak on the target battery.

[0098] The location of the leak on the target battery can be determined based on the initial duration, the speed of the suction tube, and the delay duration, which can be achieved in the following way:

[0099] In one possible implementation, a first product of a first duration and the moving speed of the inhalation tube is determined, and a second product of a delay duration and the moving speed of the inhalation tube is determined. The difference between the first product and the second product is the distance difference. Based on this distance difference, the location of the leak on the target battery can be determined. For example, the location of the leak is the position on the moving path of the inhalation tube that is the distance difference from the starting point of the movement.

[0100] In another possible implementation, a first product of the first duration and the inhalation tube's moving speed is determined, where the distance between the endpoint and the starting point equals the first product. The endpoint position can be determined based on this first product. A second product of the delay duration and the inhalation tube's moving speed is then determined, and the location on the inhalation tube's reverse movement path, at a distance equal to the second product from the endpoint position, is taken as the location of the leak. Here, the reverse movement path refers to a movement path opposite to the actual movement path of the inhalation tube.

[0101] The method provided in this application determines the location of a leak on a target battery by determining the delay time of the response peak, and based on the first duration, the moving speed of the intake tube, and the delay time. Since the delay time of the response peak is taken into account, the determined location of the leak can be more accurate, thus improving the accuracy of leak location.

[0102] In one embodiment, such as Figure 6 As shown, Figure 6 This is a flowchart illustrating a method for determining delay duration according to an embodiment of this application. This embodiment relates to a possible implementation of how to determine the delay duration of a response peak. Based on the above embodiment, S401 may include the following steps:

[0103] S601, determine a second duration from when air leaks into the inhalation tube to when air leaks out of the sensor.

[0104] In this embodiment, the second time duration from when the leak enters the suction tube to when the leak leaves the sensor can be equal to t in the above embodiment. pipe With t box The sum of the first and second products, or the second duration equals the sum of the first and second products, where the first product equals t. pipe The product of the first preset value and the second product equals t. box The product of the second preset value.

[0105] t pipe = The ratio of the volume of the inhalation tube to the inhalation velocity. If the volume of the inhalation tube is denoted as V... p Inhalation speed v p ,but r is half the inner diameter of the inhalation tube, and l is the length of the inhalation tube.

[0106] t box The ratio of chamber volume to inhalation velocity can be used to determine the maximum delay time required for a given concentration of leaky gas to travel from the chamber's inlet to the sensor's outlet. This maximum delay time is the maximum time required for the leak to travel from the inlet to the outlet. V b t represents the volume of the chamber. boxThe size is also affected by the distance between the air outlet of the inhalation tube and the sensor; the smaller the distance, the smaller the t. box The smaller the value of t, the greater the distance. box The larger the value of t, the better. box It can be equal to 0, or it can be less than or equal to t. box-max A numerical value.

[0107] S602, determine the delay duration based on the second duration.

[0108] In one possible implementation, the second duration can be used as the delay duration, i.e., t pipe +t box The sum of these values ​​represents the delay duration.

[0109] The method provided in this application embodiment determines a second time interval from when the leaked air enters the suction tube to when the leaked air leaves the sensor, and determines a delay time interval based on the second time interval, thereby facilitating the determination of the location of the leak hole on the target battery based on the delay time interval, and improving the accuracy of leak hole location.

[0110] In one embodiment, such as Figure 7 As shown, Figure 7 This is a flowchart illustrating another method for determining the delay duration provided in this application embodiment. This embodiment relates to a possible implementation of how to determine the delay duration based on a second duration. The above-described S602 may include the following steps:

[0111] S701, obtain the third duration required for the sensor to generate a response signal.

[0112] The third time required for the sensor to generate a response signal refers to the delay time of the sensor itself in responding to the leak, i.e., the delay time t caused by the sensor's own response delay. delay Different sensors have different delay times t. delay It may also differ, depending on the delay duration t. delay One performance parameter of the sensor, which is known, can be delayed for a duration t. delay The data is stored in the processor, which can then directly obtain the storage latency t. delay .

[0113] S702, determine the delay duration based on the second duration and the third duration.

[0114] In this embodiment, the sum of the second duration and the third duration can be determined and used as the delay duration. Alternatively, the sum can be multiplied by a preset value to obtain the delay duration.

[0115] The method provided in this application obtains the third duration required for the sensor to generate a response signal, and determines the delay duration based on the second duration and the third duration, thereby achieving a more comprehensive consideration of the delay duration affecting the response peak and further improving the accuracy of leak location.

[0116] In one embodiment, such as Figure 8 As shown, Figure 8 This is a flowchart illustrating a second duration determination method provided in an embodiment of this application. This embodiment relates to a possible implementation of how to determine the second duration from when leaked air enters the suction tube to when the leaked air leaves the sensor. Based on the above embodiment, S601 may include the following steps:

[0117] S801, determine a first ratio between the volume of the inhalation tube and the inhalation speed of the inhalation tube, and determine a fourth duration of leakage transmission in the inhalation tube based on the first ratio.

[0118] The first ratio is equal to t in the above embodiment. pipe , The first ratio can be used as the fourth duration of air leakage transmission in the inhalation tube. Alternatively, the first ratio can be multiplied by a preset value to obtain the fourth duration. By multiplying the first ratio by a preset value, the first ratio can be adjusted, and the adjusted first ratio can be used as the fourth duration.

[0119] S802, determine a second ratio between the volume of the chamber and the inhalation rate, and determine a fifth time interval between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio.

[0120] The second ratio is equal to t in the above embodiment. box-max ,Right now The fifth time interval between the leakage entering the chamber and the leakage leaving the sensor refers to the time between the leakage entering the chamber from the outlet of the suction tube and the leakage leaving the sensor. The fifth time interval can be a value that is not less than 0 and not greater than the second ratio.

[0121] S803, determine the second duration based on the fourth and fifth durations.

[0122] The sum of the fourth and fifth durations can be determined and used as the second duration. Alternatively, the sum can be multiplied by a preset value to obtain the second duration.

[0123] The method provided in this application determines a first ratio between the volume of the inhalation tube and the inhalation speed of the inhalation tube, determines a fourth duration of leakage transmission in the inhalation tube based on the first ratio, determines a second ratio between the volume of the chamber and the inhalation speed, determines a fifth duration between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio, and then determines a second duration based on the fourth and fifth durations, thereby achieving a more accurate determination of the second duration. This makes the delay duration determined based on the second and third durations more accurate, further improving the accuracy of leak location.

[0124] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0125] The first preset duration can be equal to 0, or the first preset duration can be a positive number very close to 0.

[0126] In this embodiment of the application, by limiting the range of values ​​for the fifth duration, the value of the fifth duration can be determined more accurately, laying the foundation for determining the delay duration of the response peak, and thus enabling more accurate location of the leak.

[0127] In one embodiment, such as Figure 9 As shown, Figure 9 This is a flowchart illustrating another method for determining the location of a leak in an embodiment of this application. This embodiment relates to a possible implementation of determining the location of a leak on a target battery based on a first duration, the moving speed of the suction tube, and a delay duration. The location of the leak on the target battery is determined based on the first duration, the moving speed of the suction tube, and the delay duration. Based on the above embodiment, S402 may include the following steps:

[0128] S901, determine the duration difference between the first duration and the delay duration.

[0129] Since t2-t1 = delay duration, and the delay duration is equal to t pipe +t box +t delay For example, the formula is as follows:

[0130] t2-t1=t pipe +t box +t delay The time difference obtained based on this formula is as follows:

[0131] t1 = t2 - (t pipe +t box +t delay ).

[0132] By determining this time difference, the movement distance of the suction tube can be compensated, and the position of the suction tube when it moves from the starting point to the leak hole can be obtained.

[0133] S902, determine the product of the duration difference and the speed of the inhalation tube movement.

[0134] In this embodiment of the application, the product of the time difference and the moving speed of the inhalation tube can be determined, and the product is used to characterize the distance the inhalation tube moves from the starting point to the leak hole.

[0135] S903 determines the location of the leak on the target battery based on the product.

[0136] This product represents the distance between the starting point of the movement and the leak. If this product is denoted as distance A, then the position on the movement path of the suction tube that is a distance A from the starting point of the movement can be taken as the position of the leak.

[0137] Alternatively, a first product of the first duration and the inspiratory tube's moving speed can be determined. This first product characterizes the distance the inspiratory tube travels from the starting point to the point where the response peak occurs. Subtracting distance A from this distance yields a difference, denoted as distance B. The location of the leak can then be defined as the position on the reverse movement path of the inspiratory tube, a distance B from the endpoint. Here, the reverse movement path refers to the movement path opposite to the actual movement path of the inspiratory tube.

[0138] The method provided in this application determines the time difference between the first time duration and the delay time, determines the product of the time difference and the moving speed of the inhalation tube, and then determines the location of the leak on the target battery based on the product, thereby achieving a more accurate location of the leak on the target battery.

[0139] In one embodiment, the movement speed of the inhalation tube is determined based on test condition information other than the movement speed; the inner diameter of the inhalation tube is determined based on test condition information other than the inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than the inhalation speed.

[0140] The test conditions information for the target battery may include, but is not limited to, environmental conditions such as the gas pressure injected into the battery pack, the moving speed of the suction pipe, the inner diameter of the suction pipe, the suction speed of the suction pipe, temperature, and humidity. By determining different moving speeds, inner diameters, and suction speeds of the suction pipe under varying environmental conditions (gas pressure, temperature, and humidity) within the battery pack, different suction pipe moving speeds, inner diameters, and suction speeds can be matched to these conditions. This results in a better signal quality response signal, captures more accurate response peaks, and improves the accuracy of leak location.

[0141] The movement speed of the inhalation tube, the inhalation speed, and the inner diameter of the inhalation tube need to be properly matched. For example, when other test conditions remain unchanged except for the movement speed of the inhalation tube, increasing the movement speed of the inhalation tube will decrease the sensor's response value; when other test conditions remain unchanged except for the inhalation speed of the inhalation tube, the sensor's response value will be maximized when the inhalation speed increases to a certain value; when other test conditions remain unchanged except for the inner diameter of the inhalation tube, the sensor's response value will be maximized when the inner diameter of the inhalation tube increases to a certain value.

[0142] In this embodiment, the moving speed of the inhalation tube is determined based on test condition information other than the moving speed; the inner diameter of the inhalation tube is determined based on test condition information other than the inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than the inhalation speed. This enables the inhalation tube to capture a significant response signal even if a small amount of gas leakage is inhaled during its movement, reducing the probability of failing to capture a relatively accurate response peak due to a weak response signal.

[0143] It should be noted that the peak response measured by moving the inhalation tube during inhalation needs to be easily identifiable; that is, the peak response should not be too low. Otherwise, interference from other environmental factors may make the peak response difficult to determine. Figure 10 As shown, Figure 10 This is a schematic diagram of a response signal provided in an embodiment of this application. Therefore, by reasonably combining test condition information such as the moving speed of the inhalation tube, the inhalation speed, and the inner diameter of the inhalation tube, the relative significance of the response peak generated by the sensor can be improved. Figure 10 The solid line represents the response value after the test condition information is optimized, while the dashed line represents the response value after the test condition information is not optimized.

[0144] Reference Figure 11 , Figure 11 This is a flowchart illustrating another method for determining the location of a leak provided in an embodiment of this application.

[0145] S1101 controls the suction tube to move along the surface of the target battery, so that the suction tube draws in the leaking air from the target battery.

[0146] S1102, determine the first time point corresponding to the starting point of the inhalation tube movement, and determine the second time point corresponding to the peak value of the response signal.

[0147] S1103, determine a first ratio between the volume of the inhalation tube and the inhalation speed of the inhalation tube, and determine a fourth duration of leakage transmission in the inhalation tube based on the first ratio.

[0148] S1104, determine the second ratio between the volume of the chamber and the inhalation rate, and determine the fifth time period between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio.

[0149] S1105, determine the second duration based on the fourth and fifth durations.

[0150] S1106, Obtain the third duration required for the sensor to generate a response signal.

[0151] S1107, determine the delay duration based on the second duration and the third duration.

[0152] S1108, determine the duration difference between the first duration and the delay duration.

[0153] S1109, determine the product of the duration difference and the speed of the inhalation tube.

[0154] S1110, determine the location of the leak on the target battery based on the product.

[0155] In one embodiment, such as Figure 1 As shown, a leak location positioning system is also provided. The system includes a leak location detection device and a processor. The leak location detection device includes an air intake tube, a chamber, and a sensor disposed in the chamber. One end of the air intake tube is connected to the chamber.

[0156] A processor for performing the steps provided in any of the above method embodiments.

[0157] In one embodiment, the leak location detection device further includes a movable component, and the suction pipe is connected to the movable component;

[0158] The processor is used to send control commands to the moving components;

[0159] A moving component for controlling the movement of the intake tube along the surface of the target battery based on control commands.

[0160] In one embodiment, a sensor is used to generate a response signal based on the concentration of leaked gas from the target battery discharged into the chamber through the suction tube.

[0161] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0162] Based on the same inventive concept, this application also provides a leak location determination device for implementing the leak location determination method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more leak location determination device embodiments provided below can be found in the limitations of the leak location determination method described above, and will not be repeated here.

[0163] In one embodiment, such as Figure 12 As shown, Figure 12 This is one of the structural schematic diagrams of the leak location determination device provided in the embodiments of this application. The device 1200 includes:

[0164] The control module 1201 is used to control the movement of the suction tube along the surface of the target battery so that the suction tube draws in the leaking air from the target battery.

[0165] The first determining module 1202 is used to determine a first time point corresponding to the starting point of the movement of the inhalation tube, and to determine a second time point corresponding to the peak value of the response signal; the response signal is generated by the sensor based on the leakage of the target battery.

[0166] The second determining module 1203 is used to determine the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the suction pipe.

[0167] In one embodiment, such as Figure 13 As shown, Figure 13 This is a second schematic diagram of the leak location determination device provided in the embodiments of this application. The second determination module 1203 in the device 1300 includes:

[0168] The first determining submodule 1301 is used to determine the delay duration of the response peak;

[0169] The second determining submodule 1302 is used to determine the location of the leak on the target battery based on the first duration, the moving speed of the suction tube, and the delay duration.

[0170] In one embodiment, such as Figure 14 As shown, Figure 14 This is the third schematic diagram of the leak location determination device provided in the embodiments of this application. The first determination submodule 1301 in the device 1400 includes:

[0171] The first determining unit 1401 is used to determine a second duration from when the leak enters the suction tube to when the leak leaves the sensor;

[0172] The second determining unit 1402 is used to determine the delay duration based on the second duration.

[0173] In one embodiment, the second determining unit 1402 is specifically used to obtain the third duration required for the sensor to generate a response signal; and to determine the delay duration based on the second duration and the third duration.

[0174] In one embodiment, the first determining unit 1401 is specifically used to determine a first ratio between the volume of the inhalation tube and the inhalation speed of the inhalation tube, and to determine a fourth duration of leakage transmission in the inhalation tube based on the first ratio; to determine a second ratio between the volume of the chamber and the inhalation speed, and to determine a fifth duration between the leakage entering the chamber and the leakage leaving the sensor based on the second ratio; and to determine the second duration based on the fourth duration and the fifth duration.

[0175] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0176] In one embodiment, the second determining submodule 1302 is specifically used to determine the duration difference between the first duration and the delay duration; determine the product of the duration difference and the moving speed of the inhalation tube; and determine the location of the leak on the target battery based on the product.

[0177] In one embodiment, the movement speed of the inhalation tube is determined based on test condition information other than the movement speed; the inner diameter of the inhalation tube is determined based on test condition information other than the inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than the inhalation speed.

[0178] The various modules in the aforementioned leak location determination device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0179] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 15 As shown. The computer device includes a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a method for determining the location of a leak. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0180] Those skilled in the art will understand that Figure 15 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0181] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0182] Control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery;

[0183] The first time point corresponding to the starting point of the inhalation tube movement is determined, and the second time point corresponding to the peak value of the response signal is determined; the response signal is generated by the sensor based on the leakage of the target battery.

[0184] The location of the leak on the target battery is determined based on the first duration between the second time point and the first time point and the moving speed of the suction tube.

[0185] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0186] Determine the delay time of the response peak; based on the first duration, the moving speed of the intake tube, and the delay time, determine the location of the leak on the target battery.

[0187] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0188] Determine a second duration from when the leak enters the suction tube to when the leak leaves the sensor; determine a delay duration based on the second duration.

[0189] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0190] Obtain the third duration required for the sensor to generate a response signal; determine the delay duration based on the second and third durations.

[0191] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0192] A first ratio between the volume of the inhalation tube and the inhalation velocity of the inhalation tube is determined, and a fourth duration for the leakage to travel in the inhalation tube is determined based on the first ratio; a second ratio between the volume of the chamber and the inhalation velocity is determined, and a fifth duration between the leakage entering the chamber and the leakage leaving the sensor is determined based on the second ratio; and a second duration is determined based on the fourth and fifth durations.

[0193] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0194] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0195] Determine the duration difference between the first duration and the delay duration; determine the product of the duration difference and the moving speed of the inhalation tube; determine the location of the leak on the target battery based on the product.

[0196] In one embodiment, the travel speed of the inhalation tube is determined based on test condition information other than travel speed; the inner diameter of the inhalation tube is determined based on test condition information other than inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than inhalation speed.

[0197] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0198] Control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery;

[0199] The first time point corresponding to the starting point of the inhalation tube movement is determined, and the second time point corresponding to the peak value of the response signal is determined; the response signal is generated by the sensor based on the leakage of the target battery.

[0200] The location of the leak on the target battery is determined based on the first duration between the second time point and the first time point and the moving speed of the suction tube.

[0201] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0202] Determine the delay time of the response peak; based on the first duration, the moving speed of the intake tube, and the delay time, determine the location of the leak on the target battery.

[0203] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0204] Determine a second duration from when the leak enters the suction tube to when the leak leaves the sensor; determine a delay duration based on the second duration.

[0205] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0206] Obtain the third duration required for the sensor to generate a response signal; determine the delay duration based on the second and third durations.

[0207] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0208] A first ratio between the volume of the inhalation tube and the inhalation velocity of the inhalation tube is determined, and a fourth duration for the leakage to travel in the inhalation tube is determined based on the first ratio; a second ratio between the volume of the chamber and the inhalation velocity is determined, and a fifth duration between the leakage entering the chamber and the leakage leaving the sensor is determined based on the second ratio; and a second duration is determined based on the fourth and fifth durations.

[0209] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0210] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0211] Determine the duration difference between the first duration and the delay duration; determine the product of the duration difference and the moving speed of the inhalation tube; determine the location of the leak on the target battery based on the product.

[0212] In one embodiment, the travel speed of the inhalation tube is determined based on test condition information other than travel speed; the inner diameter of the inhalation tube is determined based on test condition information other than inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than inhalation speed.

[0213] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0214] Control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery;

[0215] The first time point corresponding to the starting point of the inhalation tube movement is determined, and the second time point corresponding to the peak value of the response signal is determined; the response signal is generated by the sensor based on the leakage of the target battery.

[0216] The location of the leak on the target battery is determined based on the first duration between the second time point and the first time point and the moving speed of the suction tube.

[0217] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0218] Determine the delay time of the response peak; based on the first duration, the moving speed of the intake tube, and the delay time, determine the location of the leak on the target battery.

[0219] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0220] Determine a second duration from when the leak enters the suction tube to when the leak leaves the sensor; determine a delay duration based on the second duration.

[0221] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0222] Obtain the third duration required for the sensor to generate a response signal; determine the delay duration based on the second and third durations.

[0223] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0224] A first ratio between the volume of the inhalation tube and the inhalation velocity of the inhalation tube is determined, and a fourth duration for the leakage to travel in the inhalation tube is determined based on the first ratio; a second ratio between the volume of the chamber and the inhalation velocity is determined, and a fifth duration between the leakage entering the chamber and the leakage leaving the sensor is determined based on the second ratio; and a second duration is determined based on the fourth and fifth durations.

[0225] In one embodiment, the fifth duration is not less than the first preset duration and not greater than the second ratio.

[0226] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0227] Determine the duration difference between the first duration and the delay duration; determine the product of the duration difference and the moving speed of the inhalation tube; determine the location of the leak on the target battery based on the product.

[0228] In one embodiment, the travel speed of the inhalation tube is determined based on test condition information other than travel speed; the inner diameter of the inhalation tube is determined based on test condition information other than inner diameter; and the inhalation speed of the inhalation tube is determined based on test condition information other than inhalation speed.

[0229] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0230] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchain. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0231] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0232] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for determining the location of a leak, characterized in that, The method comprises: Control the suction tube to move along the surface of the target battery so that the suction tube draws in the leaking air from the target battery; A first time point corresponding to the starting point of the movement of the inhalation tube is determined, and a second time point corresponding to the peak value of the response signal is determined; the response signal is generated by the sensor based on the leakage of the target battery transmitted to the chamber by the inhalation tube, and the leakage transmitted to the chamber is the leakage of the target battery inhaled during the movement of the inhalation tube along the surface of the target battery; the sensor is disposed in the chamber; The location of the leak on the target battery is determined based on the first duration between the second time point and the first time point and the moving speed of the air inlet tube; The step of determining the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the suction tube includes: Determine the delay duration of the response peak; The location of the leak on the target battery is determined based on the first duration, the moving speed of the suction tube, and the delay duration. The delay duration for determining the response peak includes: A second duration is determined from the time the leaked air enters the suction tube to the time the leaked air leaves the sensor; the second duration is determined based on the propagation time of the leaked air in the suction tube and the time from the time the leaked air enters the chamber to the time it leaves the sensor, the propagation time being equal to the ratio of the volume of the suction tube to the inhalation velocity, and the time from the time the leaked air enters the chamber to the time it leaves the sensor being determined based on the ratio between the volume of the chamber and the inhalation velocity, and the distance between the outlet of the suction tube and the sensor; The delay duration is determined based on the second duration.

2. The method according to claim 1, characterized in that, Determining the delay duration based on the second duration includes: Obtain the third duration required for the sensor to generate the response signal; The delay duration is determined based on the second duration and the third duration.

3. The method according to claim 1 or 2, characterized in that, Determining the second time interval from when the leaked air enters the suction tube to when the leaked air leaves the sensor includes: A first ratio is determined between the volume of the inhalation tube and the inhalation speed of the inhalation tube, and a fourth duration of leakage transmission in the inhalation tube is determined based on the first ratio; A second ratio between the volume of the chamber and the inhalation rate is determined, and a fifth duration between the leakage of air into the chamber and the leakage of air leaving the sensor is determined based on the second ratio; The second duration is determined based on the fourth duration and the fifth duration.

4. The method according to claim 3, characterized in that, The fifth duration is not less than the first preset duration and not greater than the second ratio.

5. The method according to any one of claims 1-2, characterized in that, Determining the location of the leak on the target battery based on the first duration, the moving speed of the suction tube, and the delay duration includes: Determine the duration difference between the first duration and the delay duration; Determine the product of the time difference and the moving speed of the inhalation tube; The location of the leak on the target battery is determined based on the product.

6. The method according to any one of claims 1-2, characterized in that, The moving speed of the inhalation tube is determined based on other test condition information besides the moving speed; The inner diameter of the intake tube is determined based on test condition information other than the inner diameter itself; The inhalation speed of the inhalation tube is determined based on other test condition information besides the inhalation speed.

7. A device for determining the location of a leak, characterized in that, The device comprises: A control module is used to control the movement of the suction tube along the surface of the target battery, so that the suction tube draws in the leaking air from the target battery; The first determining module is used to determine a first time point corresponding to the starting point of the movement of the inhalation tube, and to determine a second time point corresponding to the peak value of the response signal; the response signal is generated by the sensor based on the leakage of the target battery transmitted to the chamber by the inhalation tube, and the leakage transmitted to the chamber is the leakage of the target battery inhaled during the movement of the inhalation tube along the surface of the target battery; the sensor is disposed in the chamber. The second determining module is used to determine the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the air inhalation tube. The step of determining the location of the leak on the target battery based on the first duration between the second time point and the first time point and the moving speed of the suction tube includes: Determine the delay duration of the response peak; The location of the leak on the target battery is determined based on the first duration, the moving speed of the suction tube, and the delay duration. The delay duration for determining the response peak includes: A second duration is determined from the time the leaked air enters the suction tube to the time the leaked air leaves the sensor; the second duration is determined based on the propagation time of the leaked air in the suction tube and the time from the time the leaked air enters the chamber to the time it leaves the sensor, the propagation time being equal to the ratio of the volume of the suction tube to the inhalation velocity, and the time from the time the leaked air enters the chamber to the time it leaves the sensor being determined based on the ratio between the volume of the chamber and the inhalation velocity, and the distance between the outlet of the suction tube and the sensor; The delay duration is determined based on the second duration.

8. A leak location positioning system, characterized in that, The system includes a leak location detection device and a processor. The leak location detection device includes an air intake tube, a chamber, and a sensor disposed in the chamber. One end of the air intake tube is connected to the chamber. The processor is configured to perform the steps of the method according to any one of claims 1 to 6.

9. The system according to claim 8, characterized in that, The leak location detection device also includes a moving component, and the suction pipe is connected to the moving component; The processor is used to send control commands to the mobile component; The moving component is used to control the air intake tube to move along the surface of the target battery based on the control command.

10. The system according to claim 8 or 9, characterized in that, The sensor is used to generate a response signal based on the concentration of leaked gas from the target battery discharged into the chamber through the suction tube.

11. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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