Detection device, detection method of detection device, computer equipment and storage medium

Abstract

The invention relates to a detection device, a detection method of the detection device, computer equipment and a storage medium. The device comprises a gas suction pump and a gas detection assembly, the getter pump is used for sucking gas leaked from a to-be-detected part of the target battery in the moving process of the getter pump and conveying the gas into the gas detection assembly; the gas detection assembly is used for generating a response signal based on gas and determining a leakage detection result of the to-be-detected part according to the response signal. According to the embodiment of the invention, the gas is sucked by the self-suction capacity of the getter pump without depending on the thermal motion of the gas, and the sucked gas is conveyed into the gas detection assembly, and the self-suction capacity of the getter pump is high, so that the efficiency of detecting the gas by the gas detection assembly can be improved, and the detection efficiency of sealing detection is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery sealing detection, and in particular to a detection device, a detection method of the detection device, a computer device and a storage medium. Background Art

[0002] With the continuous development of new energy technology, batteries are widely used in electric vehicles, aircraft, ships, submarines and other equipment. Since batteries have high energy density and electrolytes are flammable, the sealing of batteries is an important safety standard. Therefore, it is necessary to test the sealing of batteries.

[0003] At present, the tracer gas detection method is generally used, which uses a specific tracer gas for leak detection. Commonly used tracer gases include helium, hydrogen, and carbon dioxide. In traditional leak detection, it is necessary to fix the gas leak detection instrument at the location where the leak point may exist next to the battery sealing part, and then use the gas leak detection instrument to detect the gas concentration and judge whether there is a leak based on the gas concentration.

[0004] However, the current seal detection has low detection efficiency. Summary of the invention

[0005] Based on this, it is necessary to provide a detection device, a detection method of the detection device, a computer device and a storage medium that can improve the detection efficiency of battery sealing detection in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a detection device, the device comprising an air suction pump and a gas detection component;

[0007] An air suction pump, used for sucking gas leaked from a to-be-detected portion of a target battery during the movement of the air suction pump, and conveying the gas to a gas detection assembly;

[0008] The gas detection component is used to generate a response signal based on the gas and determine the leakage detection result of the part to be detected according to the response signal.

[0009] The detection device provided in the embodiment of the present application includes an air pump and a gas detection component; the air pump is used to inhale the gas leaked from the target battery to be detected during the movement of the air pump, and transport the gas to the gas detection component; the gas detection component is used to generate a response signal based on the gas, and determine the leakage detection result of the detected part according to the response signal. Since the embodiment of the present application does not need to rely on the thermal movement of the gas itself, but relies on the self-priming ability of the air pump to inhale the gas and transport the inhaled gas to the gas detection component, and the self-priming ability of the air pump is strong, even if the target battery leaks a small amount of gas, the leaked gas can be transported to the gas detection component by the air pump, so that the gas detection component can detect based on the leaked gas, without waiting for a large amount of leaked gas to enter the gas detection component, therefore, the efficiency of gas detection by the gas detection component can be improved, thereby improving the detection efficiency of sealing detection. Further, in the traditional technology, the diffusion sensing method that relies on a large amount of gas to diffuse into the gas leak detection instrument is greatly affected by the environment, while the embodiment of the present application inhales the leaked gas through the air pump, which can reduce the probability of being affected by the environment and improve the stability of the leakage detection result.

[0010] In one embodiment, the gas detection assembly includes a signal processing module, a chamber, and a sensor module disposed in the chamber, wherein the sensor module is connected to the signal processing module;

[0011] A sensor module, configured to generate a response signal based on the gas delivered into the chamber and send the response signal to a signal processing module;

[0012] The signal processing module is used to determine the leakage detection result of the part to be detected according to the response signal.

[0013] In the embodiment of the present application, by separately designing the sensor module and the signal processing module, the volume of the chamber accommodating the sensor module can be reduced due to the smaller volume of the sensor module, thereby improving the mass transfer and replacement speed of the leaked gas in the chamber, thereby improving the efficiency of the sensor module in generating a response signal based on the leaked gas, and further improving the detection efficiency of the sealing detection.

[0014] In one embodiment, at least one air outlet is provided on the first surface of the chamber;

[0015] The air outlet hole is used to discharge the gas in the chamber.

[0016] The detection device provided in the embodiment of the present application is convenient for exhausting gas in the chamber by providing at least one air outlet on the first surface of the chamber. Especially when multiple air outlets are provided on the first surface of the chamber, the total detection time of the target battery can be further reduced, thereby improving the sealing detection efficiency.

[0017] In one embodiment, the device further comprises an air pump and a first ventilation pipe, wherein the air pump is connected to the air outlet through the first ventilation pipe;

[0018] The vacuum pump is used to extract the gas in the chamber through the first ventilation pipe.

[0019] The detection device provided in the embodiment of the present application utilizes an exhaust pump to extract gas from the chamber through a first ventilation pipe, thereby improving the discharge capacity of gas in the chamber, further reducing the recovery time of the sensor module in the chamber, and improving the sealing detection efficiency.

[0020] In one embodiment, at least one air inlet hole is provided on the second surface of the chamber, and each air inlet hole is connected to the air outlet of the suction pump;

[0021] The air pump is used for delivering the gas sucked by the air pump into the chamber from the plurality of air inlet holes.

[0022] The detection device provided in the embodiment of the present application is provided with at least one air inlet hole on the second surface of the chamber, and each air inlet hole is connected to the air outlet of the air pump. The air pump transports the gas sucked by the air pump from the multiple air inlet holes to the chamber, thereby improving the efficiency of transporting the gas sucked by the air pump to the chamber, thereby reducing the time required for the sensor module to generate a response signal, and improving the sealing detection efficiency.

[0023] In one embodiment, the volume of the internal space of the chamber is less than or equal to a preset volume.

[0024] In an embodiment of the present application, the volume of the chamber accommodating the sensor module is less than or equal to a preset volume, so that the volume of the chamber is as small as possible, thereby improving the mass transfer and replacement rate of the leaked gas in the chamber, thereby improving the efficiency of the sensor module in generating a response signal based on the leaked gas, and further improving the detection efficiency of the sealing detection.

[0025] In one embodiment, the device further comprises a pulse width modulation signal generator, and the pulse width modulation signal generator is connected to the suction pump;

[0026] A pulse width modulation signal generator is used to generate a pulse width modulation signal and send the pulse width modulation signal to the suction pump;

[0027] The suction pump is used to adjust the suction speed of the suction pump based on the pulse width modulation signal.

[0028] In the embodiment of the present application, the suction speed of the suction pump is adjustable. If it is necessary to adjust the suction speed of the suction pump, a pulse width modulation signal can be generated by a pulse width modulation signal generator. By adjusting the duty cycle of the pulse width modulation signal, the average voltage across the DC motor of the suction pump can be changed, thereby achieving the adjustment of the suction speed of the suction pump.

[0029] In one embodiment, the signal processing module includes an amplifier and a processor connected to the amplifier, and the sensor module is connected to the amplifier;

[0030] An amplifier, used to amplify the response signal to obtain an amplified response signal, and send the amplified response signal to the processor;

[0031] The processor is used to determine a leak detection result based on the amplified response signal.

[0032] The detection device provided in the embodiment of the present application, the signal processing module includes an amplifier and a processor connected to the amplifier, the amplifier amplifies the response signal to obtain an amplified response signal, and sends the amplified response signal to the processor, and the processor determines the leakage detection result based on the amplified response signal, thereby realizing leakage detection of the part to be detected.

[0033] In one embodiment, the signal processing module further includes a wireless transmission module, and the wireless transmission module is connected to the processor;

[0034] A processor, configured to send a leakage detection result to a wireless transmission module;

[0035] The wireless transmission module is used to send the leakage detection result to the computer device so that the leakage detection result can be displayed by the computer device.

[0036] In the detection device provided in the embodiment of the present application, the signal processing module may further include a wireless transmission module, which is connected to the processor. The processor sends the leakage detection result to the wireless transmission module, and the wireless transmission module sends the leakage detection result to the computer device, so that the leakage detection result is displayed by the computer device, so that it can be intuitively known whether there is a leakage in the part to be detected through the leakage detection result.

[0037] In a second aspect, the present application also provides a detection method of a detection device, the device comprising an air suction pump and a gas detection component; the method comprising:

[0038] Determine the leakage detection result of the to-be-detected part of the target battery according to the response signal;

[0039] The response signal is generated by the gas detection component based on the gas delivered by the air pump, and the gas is the gas sucked by the air pump from the to-be-detected part of the target battery during the movement of the air pump.

[0040] In one embodiment, the gas detection assembly includes a signal processing module, a chamber, and a sensor module disposed in the chamber, wherein the sensor module is connected to the signal processing module;

[0041] The leakage detection result of the target battery at the part to be detected is determined according to the response signal, including:

[0042] Receive the response signal sent by the sensor module, and determine the leakage detection result of the part to be detected according to the response signal;

[0043] The response signal is generated by the sensor module based on the gas delivered into the chamber by the suction pump.

[0044] In a third aspect, the present application further provides a detection device, the device comprising:

[0045] A determination module, used to determine the leakage detection result of the to-be-detected part of the target battery according to the response signal;

[0046] The response signal is generated based on the gas delivered by the suction pump, and the gas is the gas sucked by the suction pump from the to-be-detected part of the target battery during the movement of the suction pump.

[0047] In a fourth aspect, the present application further provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method provided in the above embodiment when executing the computer program.

[0048] In a fifth aspect, the present application further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method provided in the above embodiment are implemented.

[0049] In a sixth aspect, the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the method provided in the above embodiment are implemented.

[0050] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0052] Figure 1 is a schematic diagram of a detection device provided in an embodiment of the present application;

[0053] Figure 2 It is a structural schematic diagram of an air suction pump provided in an embodiment of the present application;

[0054] Figure 3 is a schematic diagram of another detection device provided in an embodiment of the present application;

[0055] Figure 4 It is one of the structural schematic diagrams of the chamber provided in the embodiment of the present application;

[0056] Figure 5 This is the second structural schematic diagram of the chamber provided in the embodiment of the present application;

[0057] Figure 6 is a schematic diagram of another detection device provided in an embodiment of the present application;

[0058] Figure 7 is a structural block diagram of a signal processing module provided in an embodiment of the present application;

[0059] Figure 8 This is one of the schematic diagrams of the repeatability test for 50ppm hydrogen provided in the embodiments of the present application;

[0060] Fig. 9 This is the second schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application;

[0061] Fig.10 This is the third schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application;

[0062] Fig.11 This is the fourth schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application;

[0063] Fig.12 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0064] Description of reference numerals:

[0065] Air suction pump 11, target battery 12, gas detection component 13, air inlet 21, air outlet 22;

[0066] Signal processing module 131, chamber 132, sensor module 133, air outlet 31, air inlet 51;

[0067] Pulse width modulation signal generator 601, amplifier 602, processor 603, wireless transmission module 604;

[0068] Power module 605 , first three-way valve 61 , second three-way valve 62 , third three-way valve 63 . DETAILED DESCRIPTION

[0069] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0071] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0072] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0073] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0074] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0075] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0076] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0077] With the continuous development of new energy technology, batteries are widely used in electric vehicles, aircraft, ships, submarines and other equipment. Since batteries have high energy density and electrolytes are flammable, the sealing of batteries is an important safety standard. Therefore, it is necessary to test the sealing of batteries.

[0078] At present, the tracer gas detection method is generally used, which uses a specific tracer gas for leak detection. Commonly used tracer gases include helium, hydrogen, and carbon dioxide. During the detection, it is necessary to fix the gas leak detection instrument at the location where the leak point may exist next to the battery sealing part, and then use the gas leak detection instrument to detect the gas concentration, and judge whether there is a leak based on the gas concentration.

[0079] However, since this method relies on the thermal movement of the tracer gas itself for diffusion, a large amount of gas needs to diffuse into the gas leak detection instrument, so the detection time is long and the detection efficiency of the sealing detection is low.

[0080] In order to solve the above technical problems, the embodiment of the present application provides a detection device, which uses an air pump to suck the gas leaked from the part to be detected of the target battery, and transmits the sucked gas to the gas detection component, so that the sensor in the gas detection component can quickly contact the gas, thereby generating a response signal, and then performing leakage detection based on the response signal. Since the embodiment of the present application does not need to rely on the thermal movement of the gas itself, but relies on the self-priming ability of the air pump to suck the gas and transport the sucked gas to the gas detection component, and the air pump has a strong self-priming ability, it can improve the efficiency of the gas being detected by the gas detection component, thereby improving the detection efficiency of the sealing detection.

[0081] In order to more clearly introduce the detection device provided in the embodiment of the present application, Figure 1 For explanation. Figure 1 and Figure 2 As shown, Figure 1 is a schematic diagram of a detection device provided in an embodiment of the present application, Figure 2 1 is a schematic diagram of the structure of an air pump provided in an embodiment of the present application. The detection device comprises an air pump 11 and a gas detection component 13;

[0082] The air suction pump 11 is used to suck the gas leaked from the to-be-detected part of the target battery 12 during the movement of the air suction pump 11, and transport the gas to the gas detection component 13;

[0083] The gas detection component 13 is used to generate a response signal based on the gas, and determine the leakage detection result of the part to be detected according to the response signal.

[0084] The suction pump can be carried by a manipulator so as to be moved near a possible leakage point, and the suction pump can be moved at a uniform speed or a non-uniform speed.

[0085] The part to be detected may be a possible leak point, for example, a weld of a battery is a possible leak point. During the movement of the air pump 11, the air pump 11 may inhale gas leaking from the part to be detected of the target battery through the air inlet 21, and transport the inhaled gas to the gas detection assembly 13 through the air outlet 22.

[0086] In a possible implementation, the gas detection component 13 includes a chamber, a sensor module and a signal processing module arranged in the chamber, that is, the sensor module and the signal processing module can be arranged in the same chamber, and the sensor module can include at least one gas sensor. For example, the gas sensor can include but is not limited to a hydrogen sensor and an ethanol sensor. The suction pump 11 delivers the leaked gas to the chamber. Then, the sensor module in the chamber generates a response signal based on the leaked gas, and sends the response signal to the signal processing module. The signal processing module determines the concentration of the leaked gas according to the response signal, and determines the leakage detection result of the part to be detected according to the gas concentration. For example, when the gas concentration is greater than or equal to the preset gas concentration, the leakage detection result of the part to be detected is determined to be the presence of leakage; when the gas concentration is less than the preset gas concentration, the leakage detection result of the part to be detected is determined to be the absence of leakage.

[0087] In another possible implementation, the gas detection component 13 includes a signal processing module, a chamber, and a sensor module disposed in the chamber, that is, the sensor module and the signal processing module are separately disposed, and the sensor module is disposed alone in a chamber. Since the chamber does not need to accommodate the signal processing module, the volume of the chamber can be reduced, thereby increasing the mass transfer and replacement speed of the leaked gas in the chamber, thereby increasing the efficiency of the sensor module in generating a response signal based on the leaked gas, and further improving the detection efficiency of the sealing detection.

[0088] The detection device provided in the embodiment of the present application includes an air pump and a gas detection component; the air pump is used to inhale the gas leaked from the target battery to be detected during the movement of the air pump, and transport the gas to the gas detection component; the gas detection component is used to generate a response signal based on the gas, and determine the leakage detection result of the detected part according to the response signal. Since the embodiment of the present application does not need to rely on the thermal movement of the gas itself, but relies on the self-priming ability of the air pump to inhale the gas and transport the inhaled gas to the gas detection component, and the self-priming ability of the air pump is strong, even if the target battery leaks a small amount of gas, the leaked gas can be transported to the gas detection component by the air pump, so that the gas detection component can detect based on the leaked gas, without waiting for a large amount of leaked gas to enter the gas detection component, therefore, the efficiency of gas detection by the gas detection component can be improved, thereby improving the detection efficiency of sealing detection. Further, in the traditional technology, the diffusion sensing method that relies on a large amount of gas to diffuse into the gas leak detection instrument is greatly affected by the environment, while the embodiment of the present application inhales the leaked gas through the air pump, which can reduce the probability of being affected by the environment and improve the stability of the leakage detection result.

[0089] In addition, when the tracer gas detection method is used in the conventional technology, the gas leak detection instrument needs to be fixed at a position where a leak may exist next to the battery sealing part, and different types of gas leak detection instruments need to be fixedly set for battery packs of different specifications and sizes. Since the gas leak detection instrument is fixedly set at a position where a leak may exist next to the battery sealing part, and one type of gas leak detection instrument cannot be applied to battery packs of different specifications and sizes, the compatibility of the gas leak detection instrument is poor. In the embodiment of the present application, the gas detection component 13 and the suction pump 11 can be moved at a constant speed by a manipulator. Alternatively, the manipulator moves the suction pump 11 at a constant speed, and the gas detection component 13 is placed next to the target battery 12 without moving the position of the gas detection component. During the movement of the suction pump, the gas leaked from the target battery to be detected is sucked in, and the gas is transported to the gas detection component 13. The gas leaked from the detected part can be detected without fixing the gas detection component 13 at a position where a leak may exist next to the battery sealing part. Therefore, the detection device provided in the embodiment of the present application has higher compatibility and can be applied to battery packs of different specifications and sizes.

[0090] In one embodiment, Figure 3 As shown, Figure 3 Schematic diagram of another detection device provided in an embodiment of the present application. The gas detection component 13 includes a signal processing module 131, a chamber 132, and a sensor module 133 disposed in the chamber 132, wherein the sensor module 133 is connected to the signal processing module 131;

[0091] The sensor module 133 is used to generate a response signal based on the gas delivered to the chamber 132 and send the response signal to the signal processing module 131;

[0092] The signal processing module 131 is used to determine the leakage detection result of the part to be detected according to the response signal.

[0093] Before using the detection device provided in the embodiment of the present application, the sensor module needs to be fully preheated, usually 2 to 3 hours of preheating time, so that the sensor reaches a stable working state. After preheating, the sensor module is assembled and the air inlet 21 of the suction pump 11 is placed near a possible leakage point to detect battery pack leakage.

[0094] Exemplarily, the sensor module 133 may include three hydrogen sensors and one ethanol sensor. Alternatively, the sensor module 133 includes only one hydrogen sensor. The embodiment of the present application does not specifically limit the number and type of sensors included in the sensor module 133. The gas concentration detection ranges of the sensors in the sensor module 133 may be different. By providing sensors with different gas concentration detection ranges, the detection range of the gas concentration can be expanded, and the detection accuracy and comprehensiveness of leaked gases of different concentrations can be improved.

[0095] In the embodiment of the present application, by separately designing the sensor module 133 and the signal processing module, the volume of the chamber accommodating the sensor module 133 can be reduced due to the smaller volume of the sensor module 133, thereby improving the mass transfer and replacement speed of the leaked gas in the chamber, thereby improving the efficiency of the sensor module 133 in generating a response signal based on the leaked gas, and further improving the detection efficiency of the sealing detection.

[0096] In one embodiment, if Figure 3 and Figure 4 As shown, Figure 4 It is one of the structural schematic diagrams of the chamber provided in the embodiment of the present application. At least one air outlet 31 is provided on the first surface of the chamber 132, and the air outlet 31 is used to discharge the gas in the chamber 132.

[0097] The first surface may be an upper surface or a side surface of the chamber, and gas outlet holes may be provided on multiple surfaces of the chamber to improve the discharge capability of the gas in the chamber. Figure 3 and Figure 4 FIG. 1 is a schematic diagram showing a configuration of an air outlet on the front side of the chamber. Figure 3 and Figure 4 The number of the air outlet holes shown in FIG.

[0098] In the embodiment of the present application, the number of the air outlet 31 may be one or more, such as Figure 3 and Figure 4 As shown, when a plurality of air outlets 31 are provided on the first surface of the chamber 132, the speed of exhausting gas from the air outlet 31 can be increased, and the gas exhaust capacity in the chamber 132 can be increased, thereby reducing the recovery time of the sensor module 133 in the chamber 132. Since the recovery time is reduced, after the air pump moves to the next part to be detected of the target battery and the gas leaked from the next part to be detected is transported to the chamber 132, the sensor can quickly generate a response signal to the gas newly entering the chamber to detect whether there is a leak at the next possible leak point. Among them, the recovery time refers to the time required for the response amplitude to drop to 90% of the response peak value from the response peak value of the response signal.

[0099] Since the recovery time of the sensor module 133 is short, the beat time required for the sensor module 133 to detect a part to be detected is short, and the entire target battery may have multiple parts to be detected, thereby reducing the total detection time of the target battery and improving the sealing detection efficiency of each part to be detected of the target battery.

[0100] The detection device provided in the embodiment of the present application facilitates the discharge of gas in the chamber by providing at least one air outlet on the first surface of the chamber, and when multiple air outlets are provided on the first surface of the chamber, the total detection time of the target battery can be reduced, thereby improving the sealing detection efficiency.

[0101] In one embodiment, the device further comprises an air pump and a first ventilation pipe, wherein the air pump is connected to the air outlet through the first ventilation pipe;

[0102] The vacuum pump is used to extract the gas in the chamber through the first ventilation pipe.

[0103] Since the gas discharge capacity in the chamber is smaller than that in the case where a plurality of gas outlet holes are provided when only one gas outlet hole is provided, in order to improve the gas discharge capacity in the chamber, a first vent pipe may be connected to the gas outlet hole so that the vacuum pump extracts the gas in the chamber through the first vent pipe.

[0104] It is understandable that, in the case of multiple air outlets, an air pump can also be used to extract the gas in the chamber through the first ventilation pipe, so as to further improve the gas discharge capacity in the chamber. The air pump uses the circular motion of the motor to make the diaphragm inside the pump do reciprocating motion through a mechanical device, thereby compressing and stretching the air in the fixed volume pump chamber to form a negative pressure, and generating a pressure difference between the pump suction port and the external atmospheric pressure. Under the action of the pressure difference, the gas is sucked into the pump chamber and then discharged from the air outlet.

[0105] The detection device provided in the embodiment of the present application utilizes an exhaust pump to extract gas from the chamber through a first ventilation pipe, thereby improving the discharge capacity of gas in the chamber, further reducing the recovery time of the sensor module 133 in the chamber, and improving the sealing detection efficiency.

[0106] In one embodiment, if Figure 5 As shown, Figure 5 This is the second structural schematic diagram of the chamber provided in the embodiment of the present application. At least one air inlet hole 51 is provided on the second surface of the chamber 132, and each air inlet hole 51 is connected to the air outlet of the air pump 11;

[0107] The air pump 11 is used to transport the gas sucked by the air pump 11 into the chamber through the multiple air inlet holes 51.

[0108] The second surface may be a side surface opposite to the first surface, or may be arranged on other side surfaces or an upper surface. Inlet holes may be arranged on multiple surfaces of the chamber to increase the speed at which the gas sucked into the chamber by the suction pump is sucked. Figure 5 As shown, Figure 5 FIG. 1 is a schematic diagram showing an air inlet hole provided on the back side opposite to the front side. Figure 5 The number of air inlet holes shown in FIG. 2 is 2, and the number of air inlet holes may also be other values.

[0109] It should be noted that, when multiple air inlets are provided, a three-way valve can be used to connect the air outlet 22 of the air pump and the air inlet 51. For example, when two air inlets are provided, the air outlet 22 of the air pump and the two air inlets 51 can be connected by a three-way valve, that is, one end of the three-way valve is connected to the air outlet 22 of the air pump, and the other two ends of the three-way valve are respectively connected to an air inlet 51. When the number of air inlets is greater, the number of three-way valves can be increased. For example, Figure 6 As shown, Figure 6 It is a schematic diagram of another detection device provided in an embodiment of the present application. When four air inlet holes are provided, connection with the four air inlet holes 51 can be achieved through three three-way valves, that is, one end of the first three-way valve 61 is connected to the air outlet 22 of the suction pump, and the other two ends of the first three-way valve 61 are respectively connected to one end of the second three-way valve 62 and one end of the third three-way valve 63, and the other two ends of the second three-way valve 62 and the other two ends of the third three-way valve 63 are respectively connected to the air inlet holes 51.

[0110] Optionally, when multiple air inlet holes are provided, the connection with the multiple air inlet holes 51 can also be achieved by providing multiple air pumps, that is, the air outlets of the multiple air pumps are respectively connected to an air inlet hole 51, so that the multiple air pumps can transport gas into the chamber through the air inlet holes 51.

[0111] The detection device provided in the embodiment of the present application is provided with at least one air inlet hole on the second surface of the chamber, and each air inlet hole is connected to the air outlet of the air pump. The air pump transports the gas sucked by the air pump from the multiple air inlet holes to the chamber, thereby improving the efficiency of transporting the gas sucked by the air pump to the chamber and improving the sealing detection efficiency.

[0112] In one embodiment, the volume of the internal space of the chamber is less than or equal to a preset volume.

[0113] In an embodiment of the present application, the volume of the chamber accommodating the sensor module 133 is less than or equal to a preset volume, so that the volume of the chamber is as small as possible, thereby increasing the speed at which leaked gas is formed in the chamber, and further improving the efficiency of the sensor module 133 in generating a response signal based on the leaked gas, thereby further improving the detection efficiency of the sealing detection.

[0114] In one embodiment, if Figure 7 As shown, Figure 7 is a structural block diagram of another detection device provided in an embodiment of the present application, the device further includes a pulse width modulation signal generator 601, and the pulse width modulation signal generator 601 is connected to the suction pump 11;

[0115] A pulse width modulation signal generator 601 is used to generate a pulse width modulation signal and send the pulse width modulation signal to the suction pump 11;

[0116] The suction pump 11 is used to adjust the suction speed of the suction pump 11 based on the pulse width modulation signal.

[0117] In the embodiment of the present application, the suction speed of the suction pump is adjustable. If it is necessary to adjust the suction speed of the suction pump, a pulse width modulation signal can be generated by a pulse width modulation signal generator. By adjusting the duty cycle of the pulse width modulation signal, the average voltage across the DC motor of the suction pump can be changed, thereby achieving the adjustment of the suction speed of the suction pump.

[0118] In one embodiment, if Figure 7 As shown, the signal processing module includes an amplifier 602, a processor 603 connected to the amplifier 602, and the sensor module 133 is connected to the amplifier 602;

[0119] The amplifier 602 is used to amplify the response signal to obtain an amplified response signal, and send the amplified response signal to the processor 603;

[0120] The processor 603 is used to determine the leakage detection result based on the amplified response signal.

[0121] Optionally, the amplifier 602 may be connected to the processor 603 via a filter, and the filter may filter the amplified response signal to obtain a filtered signal, and the processor 603 determines the leakage detection result based on the filtered signal.

[0122] The detection device provided in the embodiment of the present application, the signal processing module includes an amplifier and a processor connected to the amplifier, the amplifier amplifies the response signal to obtain an amplified response signal, and sends the amplified response signal to the processor, and the processor 603 determines the leakage detection result based on the amplified response signal, thereby realizing leakage detection of the part to be detected.

[0123] In one embodiment, if Figure 7 As shown, the signal processing module 131 further includes a wireless transmission module 604, and the wireless transmission module 604 is connected to the processor 603;

[0124] The processor 603 is used to send the leakage detection result to the wireless transmission module 604;

[0125] The wireless transmission module 604 is used to send the leakage detection result to the computer device so that the leakage detection result can be displayed by the computer device.

[0126] In the embodiment of the present application, the wireless transmission module may include but is not limited to a Bluetooth module and a Wi-Fi module. The processor may include but is not limited to a single chip microcomputer, a central processing unit, and a field programmable gate array (FPGA).

[0127] In the detection device provided in the embodiment of the present application, the signal processing module may further include a wireless transmission module, which is connected to the processor. The processor sends the leakage detection result to the wireless transmission module, and the wireless transmission module sends the leakage detection result to the computer device, so that the leakage detection result is displayed by the computer device, so that it can be intuitively known whether there is a leakage in the part to be detected through the leakage detection result.

[0128] Optionally, the signal processing module 131 also includes a power supply module 605, which is respectively connected to the processor 603, the wireless transmission module 604 and the amplifier 602, and is used to supply power to the processor 603, the wireless transmission module 604 and the amplifier 602, so as to reduce the possibility that the processor, the amplifier and the wireless transmission module cannot work normally due to insufficient power supply, and improve the working continuity of the signal processing module.

[0129] In order to introduce the detection situation of the detection device provided in the embodiment of the present application, Figure 8 , Fig. 9 , Fig.10 and Fig.11 Provide explanation. Figure 8 This is one of the schematic diagrams of the repeatability test for 50ppm hydrogen provided in the embodiments of the present application. Fig. 9 This is the second schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application. Fig.10 This is the third schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application. Fig.11 This is the fourth schematic diagram of the repeatability test for 50ppm hydrogen provided in the embodiment of the present application. Figure 8 This is a schematic diagram of the repeatability test of 50ppm hydrogen using the GM-402B sensor. Fig. 9 This is a schematic diagram of the repeatability test of 50ppm hydrogen using the CMV-2021B sensor. Fig.10 This is a schematic diagram of the repeatability test of 50ppm hydrogen using the MQ-8 sensor. Fig.11This is a schematic diagram of the repeatability test of 50ppm hydrogen using the TGS-2620 sensor.

[0130] Reference Figure 8-Figure 11 , and the following Table 1. Figure 8 It can be seen that the detection device provided in the embodiment of the present application can achieve a rapid response to hydrogen within t1=10s, and recover to 90% of the response peak at about t2=20s, so it has good sensing stability. In addition, Table 1 also shows the repeatability of the sensor response, and repeatability is equal to the range / mean. Repeatability refers to the degree of consistency of the characteristic curve obtained when the input quantity of the sensor changes continuously for multiple times in the same direction over the full range. The more the output characteristic curves are overlapped when tested under the same input conditions multiple times, the better the repeatability and the smaller the error. It can be seen from Table 1 that the calculated repeatability, that is, the error, is less than 10%, which proves that the sensor system can achieve leak detection with high repeatability and stability. Table 1 shows the repeatability based on Figure 8-Figure 11 The data showing the relationship between the response value and time are determined.

[0131] Table 1

[0132]

[0133] In one embodiment, a detection method of a detection device is also provided. The detection method can be applied to any detection device in the above embodiments. The method includes:

[0134] Determine the leakage detection result of the to-be-detected part of the target battery according to the response signal;

[0135] The response signal is generated by the gas detection component based on the gas delivered by the air pump, and the gas is the gas sucked by the air pump from the to-be-detected part of the target battery during the movement of the air pump.

[0136] The method provided in the embodiment of the present application does not rely on the thermal movement of the gas itself, but relies on the self-priming ability of the suction pump to suck in the gas, and the sucked gas is transported to the gas detection component, and the suction pump has a strong self-priming ability, so it can improve the efficiency of gas detection by the gas detection component, thereby improving the detection efficiency of the seal detection. In addition, since the embodiment of the present application does not need to wait for a large amount of gas to diffuse into the sensor, but relies on the self-priming ability of the suction pump to suck in the gas, the suction pump has a strong self-priming ability, even if the target battery leaks a small amount of gas, the leaked gas can be transported into the chamber by the suction pump, so that the sensor module can perform detection based on the leaked gas, without waiting for a large amount of leaked gas to enter the chamber, thereby improving the detection efficiency of the seal detection.

[0137] In one embodiment, the gas detection assembly includes a signal processing module, a chamber, and a sensor module 133 disposed in the chamber, wherein the sensor module 133 is connected to the signal processing module;

[0138] The leakage detection result of the target battery at the part to be detected is determined according to the response signal, including:

[0139] Receive a response signal sent by the sensor module 133, and determine the leakage detection result of the part to be detected according to the response signal;

[0140] The response signal is generated by the sensor module 133 based on the gas delivered into the chamber by the suction pump.

[0141] 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.

[0142] Based on the same inventive concept, the embodiment of the present application also provides a detection device for implementing the detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more detection device embodiments provided below can refer to the limitations on the detection method above, and will not be repeated here.

[0143] In one embodiment, a detection device is also provided, the device comprising:

[0144] A determination module, used to determine the leakage detection result of the to-be-detected part of the target battery according to the response signal;

[0145] The response signal is generated based on the gas delivered by the suction pump, and the gas is the gas sucked by the suction pump from the to-be-detected part of the target battery during the movement of the suction pump.

[0146] In one embodiment, the gas detection component includes a signal processing module, a chamber, and a sensor module arranged in the chamber, wherein the sensor module is connected to the signal processing module; a determination module is specifically used to receive a response signal sent by the sensor module, and determine the leakage detection result of the part to be detected according to the response signal; wherein the response signal is generated by the sensor module based on the gas delivered into the chamber by the suction pump.

[0147] Each module in the above detection device can be implemented in whole or in part by software, hardware and a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module above.

[0148] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Fig.12 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a detection method is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a button, a trackball or a touch pad set on the computer device housing, or an external keyboard, touch pad or mouse, etc.

[0149] Those skilled in the art will understand that Fig.12 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0150] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the above method when executing the computer program.

[0151] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0152] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of the above method when executed by a processor.

[0153] 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, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0154] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present 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), magnetoresistive 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in the present application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on regional blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0155] 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.

[0156] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A detection device, characterized in that: The device includes an air suction pump and a gas detection component; The suction pump is used to suck the gas leaked from the to-be-detected part of the target battery during the movement of the suction pump, and transport the gas to the gas detection component; The gas detection component is used to generate a response signal based on the gas, and determine the leakage detection result of the part to be detected according to the response signal.

2. The device according to claim 1, characterized in that The gas detection assembly includes a signal processing module, a chamber, and a sensor module disposed in the chamber, wherein the sensor module is connected to the signal processing module; The sensor module is used to generate the response signal based on the gas delivered into the chamber and send the response signal to the signal processing module; The signal processing module is used to determine the leakage detection result of the part to be detected according to the response signal.

3. The device according to claim 2, characterized in that At least one air outlet is provided on the first surface of the chamber; The gas outlet is used to discharge the gas in the chamber.

4. The device according to claim 3, characterized in that The device further comprises an air pump and a first ventilation pipe, wherein the air pump is connected to the air outlet through the first ventilation pipe; The vacuum pump is used to extract the gas in the chamber through the first ventilation pipe.

5. The device according to any one of claims 2 to 4, characterized in that: At least one air inlet hole is provided on the second surface of the chamber, and each of the air inlet holes is connected to the air outlet of the air pump; The air suction pump is used to transport the gas sucked by the air suction pump into the chamber through the multiple air inlet holes.

6. The device according to any one of claims 2 to 4, characterized in that: The volume of the internal space of the chamber is less than or equal to a preset volume.

7. The device according to any one of claims 2 to 4, characterized in that: The device also includes a pulse width modulation signal generator, and the pulse width modulation signal generator is connected to the suction pump; The pulse width modulation signal generator is used to generate a pulse width modulation signal and send the pulse width modulation signal to the suction pump; The suction pump is used to adjust the suction speed of the suction pump based on the pulse width modulation signal.

8. The device according to any one of claims 2 to 4, characterized in that: The signal processing module includes an amplifier and a processor connected to the amplifier, and the sensor module is connected to the amplifier; The amplifier is used to amplify the response signal to obtain an amplified response signal, and send the amplified response signal to the processor; The processor is used to determine the leakage detection result based on the amplified response signal.

9. The device according to claim 8, characterized in that The signal processing module further includes a wireless transmission module, and the wireless transmission module is connected to the processor; The processor is used to send the leakage detection result to the wireless transmission module; The wireless transmission module is used to send the leakage detection result to a computer device so that the computer device can display the leakage detection result.

10. A detection method for a detection device, characterized in that: The device comprises an air pump and a gas detection component; the method comprises: Determine the leakage detection result of the to-be-detected part of the target battery according to the response signal; The response signal is generated by the gas detection component based on the gas delivered by the air pump, and the gas is the gas sucked by the air pump from the to-be-detected part of the target battery during the movement of the air pump.

11. The method according to claim 10, characterized in that The gas detection assembly includes a signal processing module, a chamber, and a sensor module disposed in the chamber, wherein the sensor module is connected to the signal processing module; The step of determining the leakage detection result of the to-be-detected part of the target battery according to the response signal comprises: Receiving the response signal sent by the sensor module, and determining the leakage detection result of the part to be detected according to the response signal; The response signal is generated by the sensor module based on the gas delivered into the chamber by the suction pump.

12. A detection device, characterized in that: The device comprises: A determination module, used to determine the leakage detection result of the to-be-detected part of the target battery according to the response signal; The response signal is generated based on the gas delivered by the air pump, and the gas is the gas sucked by the air pump from the to-be-detected part of the target battery during the movement of the air pump.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 10 or 11 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 10 or 11 are implemented.

Images