Explosion-proof detection device and battery production system

Abstract

The present application provides an explosion-proof detection device and a battery production system. The explosion-proof detection device includes: a first fixing member, having a first cavity and a first opening connected to the first cavity, the first opening is used to cover the first surface of the part to be detected of the part to be detected; a second fixing member, having a second cavity and a second opening connected to the second cavity, the second opening is used to cover the second surface of the part to be detected of the part to be detected; a first gas supply component, connected to the first cavity, used to fill the first cavity with gas, the gas contains a gas of a specific component; a first detection component, used to detect whether the part to be detected of the part to be detected has exploded; a second detection component, connected to the second cavity, used to detect a gas of a specific component in the second cavity. The explosion-proof detection device can improve the problem of falsely high detection results, and the detection results are highly accurate.

Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof detection, and in particular to an explosion-proof detection device and a battery production system. Background Art

[0002] With the development of new energy batteries, explosion-proof housings are used as protective housings for batteries due to their excellent performance. Currently, explosion-proof housings are mainly formed by integrating an aluminum shell and an explosion-proof valve.

[0003] Before an explosion-proof housing leaves the factory, it is usually necessary to perform a burst test to check whether the explosion-proof housing is qualified. However, the burst test results obtained by existing detection devices are usually inflated and inaccurate, which can easily lead to reliability risks. Summary of the invention

[0004] The present application provides an explosion-proof detection device, which aims to solve the problem of falsely high explosion test results obtained by the detection device in the prior art.

[0005] In order to solve the above technical problems, the first technical solution provided by this application is to provide an explosion-proof detection device. The explosion-proof detection device includes:

[0006] A first fixing member having a first cavity and a first opening communicating with the first cavity; the first opening is used to cover a first surface of a to-be-detected portion of the to-be-detected member;

[0007] A second fixing member has a second cavity and a second opening communicating with the second cavity; the second opening is used to cover the second surface of the to-be-detected portion of the to-be-detected member;

[0008] A first gas supply component is communicated with the first cavity and is used to fill the first cavity with gas; the gas includes gas of specific components;

[0009] A first detection component is used to detect whether the part to be detected of the detected piece has exploded;

[0010] The second detection component is communicated with the second cavity and is used for detecting the gas of a specific component in the second cavity.

[0011] Through the above-mentioned setting method, the first detection component can be used to perform explosion detection on the part to be detected of the piece to be detected to obtain relevant explosion values; the second detection component can also be used to detect the gas of specific components in the second cavity, so as to detect the failure mode when cracks appear in the part to be detected of the piece to be detected, thereby improving the accuracy of the explosion test results.

[0012] In some embodiments, the explosion-proof detection device also includes: a controller, which is communicatively connected to the first gas supply component and the second detection component respectively; the controller is used to control the first gas supply component to fill gas into the first cavity, and in response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value, obtain the gas pressure in the first cavity when the gas leakage rate of the specific component in the second cavity reaches the preset value.

[0013] With the above arrangement, the controller can detect the air pressure in the first cavity when the air leakage of the inspected part of the inspected piece reaches a preset level, that is, obtain the pressure that the inspected part of the inspected piece is subjected to in the failure mode when cracks occur.

[0014] In some embodiments, the controller is further used to control the first gas supply component to stop filling the first cavity with gas in response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value.

[0015] With the above arrangement, when the inspected portion of the inspected piece reaches a preset leakage level, the first air supply assembly can stop inflating, without manual operation, making inspection more convenient, saving gas usage and inspection costs.

[0016] In some embodiments, the controller is also used to control the first gas supply component to fill gas into the first cavity at a preset pressure increase rate, and in response to the gas leakage rate of a specific component in the second cavity detected by the second detection component reaching a preset value, calculate the gas pressure in the first cavity when the gas leakage rate of the specific component in the second cavity reaches a preset value by using the preset pressure increase rate and the time for filling gas into the first cavity.

[0017] Through the above-mentioned setting, the air pressure that the part to be tested of the test piece is subjected to in the failure mode when cracks occur can be calculated by the preset pressure increase rate and inflation time, so that the test result is more accurate and no pressure sensor is required.

[0018] In some embodiments, the controller is also used to control the first gas supply component to continue filling gas into the first cavity in response to the gas leakage rate of a specific component in the second cavity detected by the second detection component reaching a preset value, and to control the first gas supply component to stop filling gas into the first cavity in response to the first detection component detecting a burst of the to-be-detected part of the to-be-detected piece, and to obtain the gas pressure in the first cavity when the to-be-detected part of the to-be-detected piece bursts.

[0019] Through the above arrangement, after the failure mode when cracks appear in the part to be inspected of the part to be inspected is detected, the blasting inspection of the part to be inspected of the part to be inspected can be continued, thereby realizing linkage inspection.

[0020] In some embodiments, the first detection component includes a first air pressure sensor, which is arranged in the first cavity and is communicatively connected to the controller; the controller detects the air pressure in the first cavity through the first air pressure sensor, and when it is detected that the air pressure in the first cavity suddenly drops after continuously rising, it is determined that the inspected part of the inspected piece has exploded, and the highest air pressure in the first cavity is used as the air pressure in the first cavity when the inspected part of the inspected piece explodes.

[0021] Through the above arrangement, the first air pressure sensor is communicatively connected with the controller, so that the controller obtains the bursting air pressure of the to-be-detected portion of the to-be-detected component through the detection result of the first air pressure sensor.

[0022] In some embodiments, the second detection component is communicatively connected to the first gas supply component; the second detection component is used to control the first gas supply component to stop filling the first cavity with gas in response to the detected gas leakage rate of a specific component in the second cavity reaching a preset value.

[0023] Through the above-mentioned setting method, the second detection component is communicatively connected with the first gas supply component, and the first gas supply component is directly stopped from inflating without responding through the controller, which can improve the response rate and further save gas consumption.

[0024] In some embodiments, the explosion-proof detection device also includes: a second air supply component, which is connected to the first cavity and is used to fill air into the first cavity; the second air supply component is communicatively connected to the controller; wherein the controller is also used to first control the second air supply component to fill air into the first cavity, and in response to the air pressure in the first cavity reaching a preset air pressure, control the first air supply component to fill gas into the first cavity.

[0025] Through the above arrangement, the second gas supply component is introduced to first fill the first cavity with a certain amount of air, which can reduce the amount of gas containing specific components and save detection costs.

[0026] In some embodiments, the controller is further used to control the second air supply assembly to stop filling air into the first cavity in response to the air pressure in the first cavity reaching a preset air pressure.

[0027] Through the above-mentioned arrangement, the second air supply component stops filling the first cavity with air when the preset air pressure value is reached, so as to reduce the detection error and ensure the accuracy of the detection result.

[0028] In some embodiments, the explosion-proof detection device further comprises:

[0029] A first driving assembly, connected to the first fixing member, and used to drive the first fixing member to move between a first preset position and a second preset position along a first direction;

[0030] a second driving assembly connected to the second fixing member, and used to drive the second fixing member to move between a third preset position and a fourth preset position along the second direction;

[0031] The second direction intersects with the first direction; when the first fixing member is at the second preset position and the second fixing member is at the fourth preset position, the first fixing member and the second fixing member clamp the part to be detected of the part to be detected.

[0032] Through the above-mentioned setting method, the first drive component and the second drive component are used to facilitate the installation and removal of the piece to be detected, and during detection, the first fixing component and the second fixing component clamp the part to be detected of the piece to be detected, so that the part to be detected of the piece to be detected enters the state to be detected.

[0033] In some embodiments, the first gas supply component includes a helium gas cylinder and a solenoid valve; the helium gas cylinder is connected to the first cavity through the solenoid valve; and the second detection component is a helium detection mass spectrometer.

[0034] Through the above-mentioned setting method, during detection, the helium cylinder fills helium into the first cavity through the electromagnetic valve, and the helium leakage rate of the second cavity is detected by the helium detection mass spectrometer, thereby realizing the detection of the failure mode when cracks appear in the part to be detected of the part to be detected, and the detection method is easy to implement.

[0035] In order to solve the above technical problems, the second technical solution provided by this application is to provide a battery production system. The battery production system includes:

[0036] A transmission device for providing a housing;

[0037] The explosion-proof detection device provided by the above technical solution is used to perform explosion-proof detection on the shell.

[0038] With the above arrangement, the shell can be transported by the transmission device, and the explosion-proof detection device can be used to perform explosion-proof detection on the transported shell, thereby achieving batch detection of the shell and improving the accuracy of the explosion test results of the shell.

[0039] 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

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 is a schematic structural diagram of an exemplary explosion-proof detection device provided in an embodiment of the present application;

[0042] Figure 2 is a schematic diagram of a top view of the structure of a first fixing member provided in an embodiment of the present application;

[0043] Figure 3 is a schematic diagram of a top view of the structure of a second fixing member provided in an embodiment of the present application;

[0044] Figure 4 is a schematic structural diagram of another exemplary explosion-proof detection device provided in an embodiment of the present application;

[0045] Figure 5 is a structural schematic diagram of another exemplary explosion-proof detection device provided in an embodiment of the present application;

[0046] Figure 6 is a schematic structural diagram of another exemplary explosion-proof detection device provided in an embodiment of the present application;

[0047] Figure 7 It is a schematic diagram of the structure of an exemplary battery production system provided in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 100, explosion-proof detection device; 10, first fixing member; 11, first cavity; 111, first opening; 12, vent hole; 13, first sealing ring; 20, second fixing member; 21, second cavity; 211, second opening; 22, detection hole; 23, second sealing ring; 30, first air supply assembly; 31, air source; 32, air circuit; 321, air intake pipeline; 322, air valve; 40, first detection assembly; 41, first air pressure sensor; 50, second detection assembly; 60, controller; 70, second air supply assembly; 71, air source; 72, pre-filling air circuit; 721, pre-filling pipeline; 722, switch unit; 73, three-way valve; 81, first drive assembly; 82, second drive assembly; 200, part to be detected; 201, part to be detected; 300, transmission device. DETAILED DESCRIPTION

[0050] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0051] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0054] 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.

[0055] At present, the battery explosion-proof shell is a safety protection structure specially designed for batteries. It is intended to effectively prevent explosions, fires and other dangerous problems caused by internal chemical reactions or external factors during the charging and discharging process of the battery. Its main function is to protect the battery from damage from the external environment, while reducing the occurrence of explosions caused by factors such as excessive pressure and temperature inside the battery. The explosion-proof shell is usually made of high-strength, corrosion-resistant materials such as aluminum alloy, stainless steel or PPS plastic. The shell is usually also equipped with an explosion-proof valve, which can automatically release pressure to prevent explosion when the internal pressure of the battery exceeds the standard. For example, the explosion-proof valve is installed by welding, or the explosion-proof stamping notch is prepared by an integrated stamping notch process to replace the explosion-proof valve welding process.

[0056] Before leaving the factory, explosion-proof enclosures need to be subjected to burst tests to evaluate their safety performance and ensure that they can withstand pressure shocks under extreme conditions in actual applications. Through the analysis and evaluation of test data, problems in the design and manufacturing process of explosion-proof enclosures can be discovered, so that improvements and optimizations can be made to improve product quality. At the same time, burst tests can effectively reduce the occurrence of rupture or explosion of explosion-proof enclosures under extreme conditions, thereby ensuring the safety of personnel and equipment.

[0057] In the prior art, when the explosion-proof shell of a battery is subjected to an explosion test, the part to be tested of the explosion-proof shell is fixed in the test cavity by a fixture in the explosion tester. An oil pump is usually used to generate pressure, and then a pressure transmitter is used to apply pressure to one side of the part to be tested of the explosion-proof shell. When the shell is broken, the pressure is stopped and the explosion value is output through a digital printer.

[0058] However, when using the above-mentioned burst tester to perform a burst test on the explosion-proof shell, when microcracks appear at the welding point of the explosion-proof valve or the notched point of the notched shell, it means that the explosion-proof shell has a reliability risk, but the pressure in the test chamber will not drop suddenly, so this failure mode cannot be effectively detected, resulting in an inflated burst test result.

[0059] Based on the above considerations, in order to solve the problem of falsely high explosion test results obtained by existing explosion detection devices, the inventors have proposed an explosion-proof detection device and a battery production system after in-depth research. The explosion-proof detection device includes:

[0060] A first fixing member having a first cavity and a first opening communicating with the first cavity; the first opening is used to cover a first surface of a to-be-detected portion of the to-be-detected member;

[0061] A second fixing member has a second cavity and a second opening communicating with the second cavity; the second opening is used to cover the second surface of the to-be-detected portion of the to-be-detected member;

[0062] A first gas supply component is communicated with the first cavity and is used to fill the first cavity with gas; the gas includes gas of specific components;

[0063] A first detection component is used to detect whether the part to be detected of the detected piece has exploded;

[0064] The second detection component is communicated with the second cavity and is used for detecting the gas of a specific component in the second cavity.

[0065] Through the above-mentioned setting method, the first detection component can be used to perform explosion detection on the part to be detected of the piece to be detected to obtain relevant explosion parameter values; the second detection component can also be used to detect the gas of specific components in the second cavity, so as to detect the failure mode when cracks appear in the part to be detected of the piece to be detected, thereby improving the accuracy of the explosion test results.

[0066] The explosion-proof detection device provided in the embodiment of the present application can detect any object to be detected that requires explosion-proof detection. The embodiment of the present application is only illustratively described by taking the detection of the explosion-proof housing (such as an aluminum housing) of a battery cell as an example.

[0067] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0068] See also Figure 1 , Figure 1 1 is a schematic diagram of an exemplary explosion-proof detection device provided in an embodiment of the present application. In a first aspect, the present application provides an explosion-proof detection device 100. The explosion-proof detection device 100 includes:

[0069] The first fixing member 10 has a first cavity 11 and a first opening 111 communicating with the first cavity 11; the first opening 111 is used to cover the first surface of the to-be-detected portion 201 of the to-be-detected member 200;

[0070] The second fixing member 20 has a second cavity 21 and a second opening 211 communicating with the second cavity 21; the second opening 211 is used to cover the second surface of the to-be-detected portion 201 of the to-be-detected member 200;

[0071] The first gas supply assembly 30 is communicated with the first cavity 11 and is used to fill the first cavity 11 with gas; the gas includes a gas of a specific component;

[0072] The first detection component 40 is used to detect whether the to-be-detected portion 201 of the to-be-detected member 200 is exploded;

[0073] The second detection component 50 is communicated with the second cavity 21 and is used for detecting the gas of a specific component in the second cavity 21 .

[0074] The part to be inspected 200 can be understood as a workpiece to be inspected, and specifically can be the explosion-proof housing of the battery cell described above. The part to be inspected 201 refers to the part of the part to be inspected 200 that needs to be inspected, and specifically can be the stamping notch part of the explosion-proof valve, or the welding part of the explosion-proof valve, or other parts that need to be inspected, such as parts that are prone to cracks.

[0075] Please refer to Figure 1 and Figure 2 , Figure 2: is a schematic diagram of the top structure of the first fixing member provided by an embodiment of the present application. Among them, the first fixing member 10 can be specifically used to install and fix the part to be detected 200. The first cavity 11 of the first fixing member 10 can be specifically a groove, and the bottom wall or side wall of the groove has a vent 12 for connecting the first gas supply component 30; for example, the vent 12 is set on the bottom wall of the groove, so that when the first gas supply component 30 fills the first cavity 11 with gas, the air flow is directly toward the part to be detected 201, and the pressure of the gas acts more effectively on the part to be detected 201, and the distribution is more balanced, so that the detection is more accurate. The first cavity 11 can further be a groove with only one end open, and the port of the groove is the first opening 111. Before the detection, it is necessary to install and fix the part to be detected 200 on the first fixing member 10, and ensure that the first opening 111 completely covers the first surface of the part to be detected 201 of the part to be detected 200.

[0076] Please refer to Figure 1 and Figure 3 , Figure 3 2 is a schematic diagram of a top view of a second fixing member provided in an embodiment of the present application. The second fixing member 20 is specifically used to cooperate with the first fixing member 10 to clamp the to-be-detected member 200. Figure 4 As shown, the second cavity 21 of the second fixing member 20 can also be a groove, and the bottom wall or side wall of the groove has a detection hole 22 for connecting the second detection component 50; preferably, the detection hole 22 is set on the bottom wall of the groove so that the detection hole 22 can face the to-be-detected portion 201 of the to-be-detected member 200, so that when the detection is performed, the detection hole 22 can immediately collect the leaked gas, thereby improving the detection sensitivity of the second detection component 50 to the gas of a specific component and improving the accuracy of the detection result. The second cavity 21 can also be a groove with only one end open, and the end of the groove is the second opening 211.

[0077] After the piece to be detected 200 is installed and fixed on the first fixing member 10, the second fixing member 20 is driven close to the first fixing member 10, and cooperates with the first fixing member 10 to clamp and press the piece to be detected 200, and ensures that the second opening 211 completely covers the second surface of the part to be detected 201 of the piece to be detected 200, so that the first cavity 11 and the second cavity 21 are respectively sealed with the piece to be detected 200 to form two test cavities.

[0078] Specifically, on the first fixing member 10, a first sealing ring 13 may be arranged around the first opening 111, so that the first fixing member 10 and the member to be detected 200 are sealed, so that the first cavity 11 and the part to be detected 201 are sealed to form a test cavity. On the second fixing member 20, a second sealing ring 23 may be arranged around the second opening 211, so that the second fixing member 20 and the member to be detected 200 are sealed, so that the second cavity 21 and the part to be detected 201 are sealed to form a test cavity.

[0079] The first gas supply assembly 30 is connected to the first cavity 11 through the vent hole 12 of the first cavity 11. The first ventilation assembly may specifically include a gas source 31 and a gas circuit 32, the gas source 31 is used to provide gas, and the gas circuit 32 connects the gas source 31 and the first cavity 11. The gas source 31 may specifically be a gas bottle filled with gas or a component that can generate gas, and the gas circuit 32 may specifically include an air intake pipeline 321 and an air valve 322 disposed in the air intake pipeline 321 and other components. The gas source 31 fills the test cavity formed by the first cavity 11 with gas through the gas circuit 32 to increase the pressure of the test cavity.

[0080] The gas includes a gas containing a specific component. The specific component specifically refers to a substance that is easily detected by the second detection component 50, including but not limited to hydrogen, helium, carbon monoxide, hydrogen sulfide, tetrahydrothiophene, methane gas, C x H x The gas containing a specific component may be a single gas, such as hydrogen, helium, carbon monoxide, hydrogen sulfide, tetrahydrothiophene or C x H x The gas may also include multiple different types of gases, such as a mixed gas containing hydrogen and helium. In the embodiment of the present application, the gas containing a specific component is helium, and the second detection component 50 is a helium detection mass spectrometer.

[0081] The first detection component 40 performs detection during the process of increasing the pressure of the test cavity formed by the first cavity 11. When the air pressure in the test cavity formed by the first cavity 11 continues to increase to cause the to-be-detected portion 201 of the to-be-detected member 200 to burst, the air pressure in the test cavity drops suddenly, and the burst of the to-be-detected portion 201 of the to-be-detected member 200 is detected by the first detection component 40, thereby obtaining the burst value of the to-be-detected portion 201 of the to-be-detected member 200 through the first detection component 40. The burst value may include the burst air pressure, that is, the highest air pressure in the first cavity 11 when the to-be-detected member 200 bursts.

[0082] Among them, the second detection component 50 is connected to the second cavity 21. As the air pressure in the test cavity formed by the first cavity 11 continues to increase, when a crack appears in the to-be-detected portion 201 of the to-be-detected piece 200, the gas in the first cavity 11 enters the second cavity 21 through the crack. The second detection component 50 can detect the gas containing specific components, so as to determine whether a crack appears in the to-be-detected portion 201 of the to-be-detected piece 200. The failure mode can be detected when a crack appears in the to-be-detected portion 201 of the to-be-detected piece 200, thereby improving the accuracy of the explosion test results.

[0083] Through the above-mentioned arrangement, the explosion-proof detection device provided in the embodiment of the present application can not only perform explosion detection on the to-be-detected portion 201 of the to-be-detected piece 200 through the first detection component 40 to obtain relevant explosion values; it can also detect the gas of specific components in the second cavity 21 through the second detection component 50, thereby realizing the detection of failure modes when cracks appear in the to-be-detected portion 201 of the to-be-detected piece 200, thereby improving the accuracy of the explosion test results.

[0084] See also Figure 4 , Figure 4 1 is a schematic diagram of the structure of an exemplary explosion-proof detection device provided in another embodiment of the present application. In some embodiments, the explosion-proof detection device 100 further includes: a controller 60, which is respectively connected to the first gas supply component 30 and the second detection component 50 for communication; the controller 60 is used to control the first gas supply component 30 to fill the first cavity 11 with gas, and in response to the gas leakage rate of the specific component in the second cavity 21 detected by the second detection component 50 reaching a preset value, obtain the gas pressure in the first cavity 11 when the gas leakage rate of the specific component in the second cavity 21 reaches the preset value.

[0085] The controller 60 may be a logic operation device or apparatus with information processing and operation capabilities, such as a microcontroller unit (MCU) or a personal computer (PC).

[0086] Among them, the communication connection refers to a data transmission channel established between different devices, which is used to realize two-way or multiple exchanges of information, and can be a wired connection or a wireless connection. In the embodiment of the present application, by making the controller 60 respectively connected to the first air supply component 30 and the second detection component 50 through a data line communication connection, a signal can be transmitted between the controller 60 and the first air supply component 30, and a signal can be transmitted between the controller 60 and the second detection component 50. In other embodiments, the first air supply component 30 and the second detection component 50 can also be connected by a wireless communication connection method, such as Bluetooth, WiFi, NFC and other wireless communication connection methods.

[0087] The gas leakage rate refers to the speed at which gas flows from one area to another through a certain pore or gap, and is usually used to describe the gas leakage in a sealed system or container. In the embodiment of the present application, the gas leakage rate of a specific component refers to the speed at which the gas of a specific component in the first cavity 11 enters the second cavity 21 through the crack when a crack appears in the to-be-detected portion 201 of the to-be-detected member 200. The speed can be obtained by measuring the change in the content of the gas of the specific component in the second cavity 21 by the second detection component 50.

[0088] By making the controller 60 communicatively connected with the first air supply component 30 and the second detection component 50 respectively, signal transmission can be performed between the controller 60 and the first air supply component 30, so that when performing detection, a control signal is transmitted to the first air supply component 30 through the controller 60 to control the first air supply component 30 to inflate the first cavity 11. By making the controller 60 communicate with the second detection component 50, the controller 60 can obtain the detection data of the second detection component 50 in real time, and the detection data is the gas leakage rate of the specific component in the second cavity 21; when the gas leakage rate of the specific component in the second cavity 21 reaches a preset value, it means that a crack has appeared in the to-be-detected portion 201 of the to-be-detected piece 200, and the to-be-detected piece 200 has opened the valve, and the controller 60 further responds to the gas leakage rate of the specific component in the second cavity 21 detected by the second detection component 50 reaching the preset value, and obtains the air pressure in the first cavity 11 at this time, thereby obtaining the pressure that the to-be-detected piece 200 withstands when a crack appears in the to-be-detected portion 201 of the to-be-detected piece 200 causes the to-be-detected piece 200 to fail, and the pressure can be defined as the valve opening air pressure of the to-be-detected piece 200.

[0089] In some embodiments, the controller 60 is further used to control the first gas supply assembly 30 to stop filling the first cavity 11 with gas in response to the gas leakage rate of the specific component in the second cavity 21 detected by the second detection assembly 50 reaching a preset value.

[0090] Furthermore, when the gas leakage rate of a specific component in the second cavity 21 detected by the second detection component 50 reaches a preset value, that is, a crack appears in the detectable portion 201 of the detectable component 200, the detectable component 200 opens a valve, and the controller 60 transmits a control signal to the first gas supply component 30 in response to the opening of the valve of the detectable component 200, so as to control the first gas supply component 30 to stop filling the first cavity 11 with gas, that is, to control the first gas supply component 30 to stop inflating.

[0091] By controlling the switch of the first gas supply component 30 through the controller 60, the first gas supply component 30 can be turned on or off instantly, the gas usage is more accurate, and the gas usage during detection can be saved. In addition, it can also avoid the explosion of the test piece 200 due to the untimely closing of the first gas supply component 30, which affects the detection of the first detection component 40.

[0092] In some embodiments, the controller 60 is also used to control the first gas supply component 30 to fill gas into the first cavity 11 at a preset pressurization rate, and in response to the gas leakage rate of a specific component in the second cavity 21 detected by the second detection component 50 reaching a preset value, the gas pressure in the first cavity 11 when the gas leakage rate of the specific component in the second cavity 21 reaches a preset value is calculated by using the preset pressurization rate and the time for filling gas into the first cavity 11.

[0093] It can be understood that the controller 60 controls the first gas supply component 30 to inflate the first cavity 11 at a preset pressure increase rate, so that the pressure in the first cavity 11 is increased at a uniform speed at a preset pressure increase rate. When the first gas supply component 30 starts to inflate, the controller 60 is also used to perform timing; when the gas leakage rate of a specific component in the second cavity 21 detected by the second detection component 50 reaches a preset value, that is, when the valve of the part to be detected 200 is opened, the controller 60 stops timing, and calculates the air pressure in the first cavity 11 at this time according to the preset pressure increase rate and the inflation time of the first gas supply component 30, thereby obtaining the valve opening air pressure of the part to be detected 200. Specifically, valve opening air pressure = preset pressure increase rate × inflation time. The test result of the valve opening air pressure obtained in this way is more accurate, and no air pressure sensor is required.

[0094] Further, the controller 60 can be connected to the gas valve 322 in the first gas supply component 30 in communication to control the air flow rate of the first gas supply component 30, so that the first gas supply component 30 fills the gas into the first cavity 11 according to the preset pressure increase rate. The gas valve 322 can be a switch device such as a solenoid valve, and the opening and closing of the gas valve 322 and the opening degree of the gas valve 322 can be controlled by the controller 60, so as to control the air flow rate through the gas valve 322; the first gas supply component 30 can include one or more gas valves 322, so as to improve the adjustment accuracy of the pressure increase rate of the first gas supply component 30.

[0095] In some embodiments, the controller 60 is also used to control the first gas supply component 30 to continue filling gas into the first cavity 11 in response to the gas leakage rate of a specific component in the second cavity 21 detected by the second detection component 50 reaching a preset value, and to control the first gas supply component 30 to stop filling gas into the first cavity 11 and obtain the gas pressure in the first cavity 11 when the part 201 to be detected 200 to be detected ruptures in response to the first detection component 40 detecting the explosion of the part 201 to be detected of the part 200 to be detected.

[0096] Further, when the gas leakage rate of a specific component in the second cavity 21 detected by the second detection component 50 reaches a preset value, that is, after the valve of the detected part 200 is opened, the controller 60 controls the first gas supply component 30 to continue to fill the first cavity 11 with gas until the detected part 201 of the detected part 200 is exploded, and the controller 60 transmits a control signal to the first gas supply component 30, so that the first gas supply component 30 stops inflating, so as to reduce the gas consumption of the first ventilation component and avoid waste. At this time, the controller 60 obtains the air pressure in the first cavity 11 when the detected part 201 of the detected part 200 is exploded, thereby obtaining the pressure that the detected part 201 of the detected part 200 is subjected to when it is exploded, and the pressure can be defined as the explosion pressure for reference in the design of the explosion shell.

[0097] In some embodiments, the first detection component 40 includes a first air pressure sensor 41, which is arranged in the first cavity 11 and is communicatively connected with the controller 60; the controller 60 detects the air pressure in the first cavity 11 through the first air pressure sensor 41, and when it is detected that the air pressure in the first cavity 11 suddenly drops after continuously increasing, it is determined that the inspected portion 201 of the inspected piece 200 has exploded, and the highest air pressure in the first cavity 11 is used as the air pressure in the first cavity 11 when the inspected portion 201 of the inspected piece 200 explodes.

[0098] The air pressure sensor is an instrument for measuring the absolute pressure of gas. The first detection assembly 40 includes a first air pressure sensor 41 , and the first air pressure sensor 41 is disposed in the first cavity 11 , so that the air pressure in the first cavity 11 is detected by the first air pressure sensor 41 .

[0099] By communicating with the first air pressure sensor 41 and the controller 60, the controller 60 can instantly obtain the current air pressure in the first cavity 11. When it is monitored that the air pressure in the first cavity 11 drops sharply after a continuous increase, that is, the gas in the first cavity 11 is released instantly, causing the air pressure in the first cavity 11 to drop sharply, the controller 60 determines that the part to be detected 201 of the part to be detected 200 has exploded, and uses the highest air pressure in the first cavity 11 as the air pressure in the first cavity 11 when the part to be detected 201 of the part to be detected 200 explodes.

[0100] It can be understood that if the to-be-detected portion 201 of the to-be-detected member 200 explodes, the first cavity 11 and the second cavity 21 will be connected, causing the gas in the first cavity 11 to be instantly released to the second cavity 21, and the air pressure in the first cavity 11 will drop suddenly. Therefore, it can be determined whether the to-be-detected portion 201 of the to-be-detected member 200 has exploded according to the air pressure in the first cavity 11.

[0101] Further, when the gas leakage rate of the specific component in the second cavity 21 detected by the second detection component 50 reaches a preset value, the controller 60 controls the first gas supply component 30 to continue to inflate the first cavity 11 at a preset pressure increase rate, and the controller 60 can also continue to record the inflation time. When the controller 60 determines that the to-be-detected portion 201 of the to-be-detected member 200 has exploded, the timing is stopped again, and the first gas supply component 30 is controlled to stop inflating. At this time, the controller 60 can also calculate the explosion pressure when the to-be-detected portion 201 of the to-be-detected member 200 explodes according to the preset pressure increase rate and the recorded total inflation time, that is, the explosion pressure = preset pressure increase rate × total inflation time.

[0102] By means of the above arrangement, the first air pressure sensor is communicatively connected with the controller, so that the controller obtains the bursting air pressure of the part to be tested of the tested component through the detection result of the first air pressure sensor, so that the joint detection of the valve opening air pressure and the bursting air pressure can be realized in one test.

[0103] Furthermore, the controller 60 may also compare the highest air pressure in the first cavity 11 detected by the first detection component 40 with the calculated bursting air pressure, and use the relatively lower air pressure value as the bursting air pressure, or use the average of the two air pressure values ​​as the bursting air pressure. Alternatively, the highest air pressure in the first cavity 11 detected by the first detection component 40 is used as the bursting air pressure detection value, and the bursting air pressure obtained by calculation is used as the bursting air pressure reference value, so as to serve as a reference for judging whether the measured bursting air pressure detection value is valid.

[0104] In some embodiments, the first detection component 40 includes a second air pressure sensor (not shown), which is disposed in the second cavity 21 and is communicatively connected to the controller 60; the controller 60 detects the air pressure in the second cavity 21 through the second air pressure sensor, and upon detecting a sudden sharp increase in the air pressure in the second cavity 21, determines that the inspected portion 201 of the inspected component 200 has exploded.

[0105] Specifically, by disposing the second air pressure sensor in the second cavity 21 and communicating with the controller 60, the controller 60 can instantly obtain the air pressure in the second cavity 21 through the second air pressure sensor, so that the controller 60 can determine whether the part to be detected 201 of the part to be detected 200 has exploded through the air pressure value in the second cavity 21.

[0106] It can be understood that when the to-be-detected portion 201 of the to-be-detected member 200 explodes, the gas in the first cavity 11 will instantly enter the second cavity 21 from the first cavity 11, so that the air pressure in the second cavity 21 instantly increases significantly. Therefore, it is possible to determine whether the to-be-detected portion 201 of the to-be-detected member 200 has exploded by detecting the change in air pressure in the second cavity 21; that is, when the air pressure in the second cavity 21 suddenly increases sharply, it is determined that the to-be-detected member 200 has exploded. At the same time, in response to the explosion of the to-be-detected member 200, the controller 60 controls the first air supply assembly 30 to stop inflating the first cavity 11.

[0107] In some embodiments, the controller 60 can detect the gas leakage rate of a specific component in the second cavity 21 through the second detection component 50, and when it is detected that the gas leakage rate of the specific component in the second cavity 21 suddenly increases, it is determined that the detected part 200 has exploded; and in response to the explosion of the detected part 200, the gas pressure in the first cavity 11 when the detected part 201 of the detected part 200 explodes is calculated through the preset boosting rate of the first gas supply component 30 and the inflation time when the detected part 201 explodes, that is, the explosion pressure. The specific calculation method is the same as that in the above embodiment, that is, the explosion pressure = preset boosting rate × inflation time.

[0108] Through the above arrangement, the blasting gas pressure can also be detected by the second detection component, without the need to set up a gas pressure sensor for detection, and the test result obtained by the above calculation method is more accurate.

[0109] In some embodiments, the second detection component 50 is communicatively connected to the first gas supply component 30; the second detection component 50 is used to control the first gas supply component 30 to stop filling gas into the first cavity 11 in response to the detected gas leakage rate of a specific component in the second cavity 21 reaching a preset value.

[0110] Specifically, by making the second detection component 50 and the first gas supply component 30 communicatively connected, the second detection component 50 can directly transmit a corresponding signal to the first gas supply component 30. When the second detection component 50 detects that the gas leakage rate of a specific component in the second cavity 21 reaches a preset value, the to-be-detected portion 201 of the to-be-detected part 200 opens a valve, and in response to the valve opening of the to-be-detected portion 201 of the to-be-detected part 200, the second detection component 50 transmits a valve opening control signal to the first gas supply component 30, so that the first gas supply component 30 stops filling the first cavity 11 with gas after receiving the valve opening control signal.

[0111] Through this setting, the second detection component 50 is directly connected to the first air supply component 30 for communication without going through the controller 60, which can improve the response speed of the first air supply component 30 when the valve of the detected part 201 of the detected part 200 is opened, and can further improve the accuracy of the detection result.

[0112] See also Figure 5 , Figure 5 : is a schematic diagram of the structure of an exemplary explosion-proof detection device provided by another embodiment of the present application. In some embodiments, the explosion-proof detection device 100 further includes: a second air supply component 70, which is connected to the first cavity 11 and is used to fill air into the first cavity 11; the second air supply component 70 is communicatively connected to the controller 60; wherein the controller 60 is also used to first control the second air supply component 70 to fill air into the first cavity 11, and in response to the air pressure in the first cavity 11 reaching a preset air pressure, control the first air supply component 30 to fill gas into the first cavity 11.

[0113] Specifically, the explosion-proof detection device 100 further includes a second air supply assembly 70, and the second air supply assembly 70 is communicated with the first cavity 11, so that the second air supply assembly 70 can fill air into the first cavity 11. The second air supply assembly 70 is communicatively connected to the controller 60, so that the controller 60 can control the second air supply assembly 70.

[0114] When testing, the controller 60 can first control the second air supply assembly 70 to fill a certain amount of air into the first cavity 11, so that the air pressure in the first cavity 11 reaches the preset air pressure first; then, in response to the air pressure in the first cavity 11 reaching the preset air pressure, the controller 60 controls the first air supply assembly 30 to fill the first cavity 11 with gas containing specific components. The preset air pressure can be determined experimentally or set based on experience.

[0115] The second air supply assembly 70 may include an air source 71 and a pre-filling air path 72, and the air source 71 is connected to the first cavity 11 through the pre-filling air path 72. The pre-filling air path 72 includes a pre-filling pipeline 721 and a switch unit 722, and the switch unit 722 is arranged in the pre-filling pipeline 721. The switch unit is also connected to the controller 60 in communication, so that the controller 60 can control the switch state of the switch unit 722 and control the air flow through the switch unit 722, so as to control the air pressure in the first cavity 11 to rise at a preset rate.

[0116] Specifically, the air circuit 32 of the first air supply assembly 30, the pre-filled air circuit 72 of the second air supply assembly 70 and the first cavity 11 may be connected via a three-way valve 73. The three-way valve 73 may be connected to the controller 60 for communication so as to control the state of the three-way valve 73 through the controller 60. The three-way valve 73 has a closed state and an open state; wherein the open state includes a first connected state and a second connected state, the first connected state being that the air circuit 32 of the first air supply assembly 30 is in pipeline communication with the first cavity 11, and the second connected state being that the pre-filled air circuit 72 of the second air supply assembly 70 is in pipeline communication with the first cavity 11.

[0117] By setting the three-way valve 73, the gas of the first air supply component 30 will not enter the pre-filling pipeline 721 of the second air supply component 70, and the air of the second air supply component 70 will not enter the air intake pipeline 321 of the first air supply component 30, so as to improve the accuracy of the detection result. It can also further ensure that the air of the second air supply component 70 cannot enter the first cavity 11 when the first air supply component 30 is inflated, and the gas of the first air supply component 30 cannot enter the first cavity 11 when the second air supply component 70 is inflated, so as to improve the accuracy of the detection result.

[0118] Through the above settings, when performing detection, a certain amount of air can be first filled into the first cavity 11, and then the gas containing specific components can be filled into the first cavity 11 for detection, which can effectively reduce the amount of gas containing specific components and reduce the detection cost. Among them, the preset air pressure is less than the valve opening air pressure, and the specific value can be set according to actual detection needs.

[0119] In some embodiments, the controller 60 is further configured to control the second air supply assembly 70 to stop filling air into the first cavity 11 in response to the air pressure in the first cavity 11 reaching a preset air pressure.

[0120] Specifically, when the detection is performed, the controller 60 controls the second air supply assembly 70 to fill the air in the first cavity 11 so that the air pressure in the first cavity 11 reaches the preset air pressure, that is, the second air supply assembly 70 is controlled to stop filling the first cavity 11 with air, so as to ensure that the second air supply assembly 70 only raises the air pressure in the first cavity 11 to the preset air pressure, thereby ensuring the accuracy of the valve opening air pressure calculated by the controller 60. It can be understood that the valve opening air pressure = preset air pressure + preset pressure increase rate × inflation time.

[0121] See also Figure 6 , Figure 6 is a schematic diagram of the structure of another exemplary explosion-proof detection device provided in an embodiment of the present application. In some embodiments, the explosion-proof detection device 100 further includes:

[0122] A first driving assembly 81, connected to the first fixing member 10, and used to drive the first fixing member 10 to move along the first direction X between the first preset position and the second preset position;

[0123] A second driving assembly 82, connected to the second fixing member 20, for driving the second fixing member 20 to move along the second direction Y between the third preset position and the fourth preset position;

[0124] The second direction Y intersects the first direction X; when the first fixing member 10 is at the second preset position and the second fixing member 20 is at the fourth preset position, the first fixing member 10 and the second fixing member 20 clamp the to-be-detected portion 201 of the to-be-detected member 200 .

[0125] Specifically, the explosion-proof detection device 100 further includes a base (not shown), on which the first drive assembly 81 is disposed, and the first drive assembly 81 is connected to the first fixing member 10. A fixing bracket (not shown) is also provided on the base, on which the second drive assembly 82 is disposed, and the second drive assembly 82 is connected to the second fixing member 20.

[0126] The first direction X is a direction parallel to the plane where the base is located; the second direction Y intersects with the plane parallel to the base. In a specific embodiment, the second direction Y can be defined as being perpendicular to the plane where the base is located and intersecting with the first direction X.

[0127] After the member to be detected 200 is installed and fixed on the first fixing member 10, the first driving component 81 drives the first fixing member 10 to move from the first preset position to the second position along the first direction X, and the second driving component 82 drives the second fixing member 20 to move from the third preset position to the fourth preset position along the second direction Y, so that the first fixing member 10 and the second fixing member 20 clamp the portion to be detected 201 of the member to be detected 200, so that the first cavity 11 and the first surface of the portion to be detected 201 are sealed, and the second cavity 21 and the second surface of the portion to be detected 201 are sealed, so as to facilitate subsequent detection work.

[0128] By providing the first driving assembly 81 and the second driving assembly 82, the automation degree of the detection work can be improved, making the detection work more convenient and improving the detection efficiency.

[0129] Further, the controller 60 is respectively connected to the first drive assembly 81 and the second drive assembly 82 in communication to control the operation of the first drive assembly 81 and the second drive assembly 82. The first drive assembly 81 may include a slide rail, a slider and a first drive member (not shown), the slide rail extends along the first direction X, the slider is arranged on the slide rail, the drive member is fixedly arranged on the slider and is connected to the controller 60 in communication to drive the slider to move along the track of the slide rail between the first preset position and the second preset position. The second drive assembly 82 may include a telescopic rod and a second drive member (not shown), the telescopic rod can be telescopic along the second direction Y, the second fixed member 20 is connected to the telescopic rod, the second drive member is connected to the telescopic rod and is connected to the controller 60 in communication to drive the second fixed member 20 to move along the second direction Y between the third preset position and the fourth preset position. The first drive member and the second drive member may be motors.

[0130] In some embodiments, the first gas supply component 30 includes a helium gas cylinder and a solenoid valve; the helium gas cylinder is connected to the first cavity 11 through the solenoid valve; and the second detection component 50 is a helium detection mass spectrometer.

[0131] That is, the gas source 31 in the first gas supply assembly 30 is a helium gas cylinder, and the gas valve 322 is a solenoid valve.

[0132] Among them, the solenoid valve is a valve that controls the flow of fluid (such as gas or liquid) through electromagnetic force. The number of solenoid valves can be one or more. For example, in one embodiment, the number of solenoid valves is multiple, and the multiple solenoid valves form a solenoid valve matrix, each solenoid valve is connected to the controller 60 for communication, and each solenoid valve can be independently controlled, so that the switch of the corresponding solenoid valve in the solenoid valve matrix can be controlled by the controller 60 to control the supply gas flow rate of the first air supply component 30, so that the first cavity 11 is boosted at a preset boost rate; by setting the solenoid valve matrix, the control accuracy of the preset boost rate can be improved, thereby improving the accuracy of the detection result.

[0133] Among them, the helium detection mass spectrometer is a highly sensitive instrument for detecting trace gas leaks, and specifically uses mass spectrometry technology to detect helium. Since the helium detection mass spectrometer can detect extremely low concentrations of helium, it can find very small leaks, and has a high detection sensitivity, so it can be used to detect whether the to-be-detected part 201 of the to-be-detected part 200 has cracks, and the detection result has a high accuracy.

[0134] Moreover, by making the second detection component 50 include a helium detection mass spectrometer, when the second gas supply component 70 pre-fills the first cavity 11 with air, the helium detection mass spectrometer can also detect helium, which can be applicable to this detection method.

[0135] In some embodiments, the first gas supply assembly 30 may further include a flow sensor (not shown), which is disposed in the gas circuit 32 of the first gas supply assembly 30 and is communicatively connected to the controller 60. The flow sensor is used to detect the gas flow in the gas circuit 32 and transmit the detection result to the controller 60. The controller 60 is also used to determine whether the current boost rate in the first cavity 11 is within the standard range of the preset boost rate according to the gas flow detected by the flow sensor, and in response to the current boost rate no longer being within the standard range of the preset boost rate, adjust the current boost rate according to the difference between the current boost rate and the preset boost rate.

[0136] By setting up a flow sensor and communicating with the controller 60, the inflation rate of the first air supply component 30 can be monitored in real time, so that the inflation rate can be adjusted in time according to the detection result, so that the pressure increase rate in the first cavity 11 is constant at a preset pressure increase rate, realizing closed-loop control, thereby improving the accuracy of the detection result.

[0137] See also Figure 7 , Figure 7 : is a schematic diagram of the structure of an exemplary battery production system provided in an embodiment of the present application. In a second aspect, an embodiment of the present application provides a battery production system. The battery production system includes:

[0138] The transmission device 300 is used to provide a housing;

[0139] The explosion-proof detection device 100 provided by the above technical solution is used to perform explosion-proof detection on a shell.

[0140] The transmission device 300 may be a conveyor belt or a transport vehicle for transporting the shell to the inspection area to perform explosion-proof inspection on the shell. The shell is specifically the explosion-proof shell of the battery introduced above. The battery may be a battery cell. In the battery production system, after the shell is inspected, the qualified shell will be loaded with the electrode assembly for preparation into a battery cell.

[0141] Specifically, the explosion-proof detection device 100 described in the above embodiment is used to perform explosion-proof detection on the shell, so as to realize real-time monitoring of the gas leakage rate of the shell to be detected part 201, and detection of quality parameters such as valve opening pressure and bursting pressure. The detection method for explosion-proof detection of the shell can also adopt the detection method described in the above embodiment, and the details can be referred to the above detailed description, which will not be repeated here.

[0142] By using the above-mentioned explosion-proof detection device 100 to perform explosion-proof detection on the shell, the mode of valve opening failure caused by cracks at the notch on the shell can be detected, thereby improving the effectiveness of the explosion-proof test; and at the same time, explosion detection can also be performed to realize multi-parameter joint inspection, which can improve the quality of battery production.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An explosion-proof detection device, characterized in that: include: A first fixing member having a first cavity and a first opening communicating with the first cavity; The first opening is used to cover the first surface of the to-be-detected portion of the to-be-detected component; A second fixing member having a second cavity and a second opening communicating with the second cavity; the second opening is used to cover a second surface of the to-be-detected portion of the to-be-detected member; A first gas supply component, connected to the first cavity, for filling the first cavity with gas; the gas contains gas of specific components; A first detection component, used to detect whether the to-be-detected portion of the to-be-detected component has exploded; a second detection component, communicated with the second cavity, and used for detecting the gas of the specific component in the second cavity; A controller is respectively connected to the first air supply component and the second detection component for communication; the controller is used for: Controlling the first gas supply assembly to fill the first cavity with gas at a preset pressure increase rate; In response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value, the gas pressure in the first cavity when the gas leakage rate of the specific component in the second cavity reaches the preset value is calculated by using the preset pressure increase rate and the time for filling gas into the first cavity.

2. The explosion-proof detection device according to claim 1, characterized in that: The controller is also used to control the first gas supply component to stop filling the first cavity with gas in response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value.

3. The explosion-proof detection device according to claim 1, characterized in that: The controller is also used to control the first gas supply component to continue filling gas into the first cavity in response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value, and to control the first gas supply component to stop filling gas into the first cavity and obtain the gas pressure in the first cavity when the to-be-detected part of the to-be-detected part explodes in response to the first detection component detecting the explosion of the to-be-detected part.

4. The explosion-proof detection device according to claim 3, characterized in that: The first detection component includes a first air pressure sensor, which is arranged in the first cavity and is communicatively connected with the controller; the controller detects the air pressure in the first cavity through the first air pressure sensor, and when it is detected that the air pressure in the first cavity suddenly drops after continuously increasing, it is determined that the part to be detected of the part to be detected has exploded, and the highest air pressure in the first cavity is used as the air pressure in the first cavity when the part to be detected of the part to be detected explodes.

5. The explosion-proof detection device according to claim 1, characterized in that: The second detection component is communicatively connected to the first gas supply component; the second detection component is also used to control the first gas supply component to stop filling the first cavity with gas in response to the detected gas leakage rate of the specific component in the second cavity reaching a preset value.

6. The explosion-proof detection device according to claim 1, characterized in that: The explosion-proof detection device further comprises: a second air supply assembly, connected to the first cavity and used to fill the first cavity with air; the second air supply assembly is in communication with the controller; The controller is further used to first control the second air supply component to fill the first cavity with air, and in response to the air pressure in the first cavity reaching a preset air pressure, control the first air supply component to fill the first cavity with gas.

7. The explosion-proof detection device according to claim 6, characterized in that: The controller is also used to control the second air supply assembly to stop filling air into the first cavity in response to the air pressure in the first cavity reaching a preset air pressure.

8. The explosion-proof detection device according to claim 1, characterized in that: The explosion-proof detection device further comprises: a first driving assembly connected to the first fixing member, and configured to drive the first fixing member to move along a first direction between a first preset position and a second preset position; a second driving assembly connected to the second fixing member, and configured to drive the second fixing member to move along a second direction between a third preset position and a fourth preset position; Wherein, the second direction intersects with the first direction; when the first fixing member is at the second preset position and the second fixing member is at the fourth preset position, the first fixing member and the second fixing member clamp the to-be-detected portion of the to-be-detected member.

9. The explosion-proof detection device according to any one of claims 1 to 8, characterized in that: The first gas supply component includes a helium cylinder and a solenoid valve; the helium cylinder is connected to the first cavity through the solenoid valve; and the second detection component is a helium detection mass spectrometer.

10. An explosion-proof detection device, characterized in that: include: A first fixing member having a first cavity and a first opening communicating with the first cavity; The first opening is used to cover the first surface of the to-be-detected portion of the to-be-detected component; A second fixing member having a second cavity and a second opening communicating with the second cavity; the second opening is used to cover a second surface of the to-be-detected portion of the to-be-detected member; A first gas supply component, connected to the first cavity, for filling the first cavity with gas; the gas contains gas of specific components; A first detection component, used to detect whether the to-be-detected portion of the to-be-detected component has exploded; a second detection component, communicated with the second cavity, and used for detecting the gas of the specific component in the second cavity; A controller is respectively connected to the first air supply component and the second detection component for communication; the controller is used for: Controlling the first gas supply component to fill the first cavity with gas; In response to the gas leakage rate of the specific component in the second cavity detected by the second detection component reaching a preset value, obtaining the gas pressure in the first cavity when the gas leakage rate of the specific component in the second cavity reaches the preset value, and controlling the first gas supply component to continue filling the first cavity with gas; In response to the first detection component detecting that the inspected portion of the inspected piece has exploded, the first gas supply component is controlled to stop filling gas into the first cavity and obtain the gas pressure in the first cavity when the inspected portion of the inspected piece has exploded.

11. An explosion-proof detection device, characterized in that: include: A first fixing member having a first cavity and a first opening communicating with the first cavity; The first opening is used to cover the first surface of the to-be-detected portion of the to-be-detected component; A second fixing member having a second cavity and a second opening communicating with the second cavity; the second opening is used to cover a second surface of the to-be-detected portion of the to-be-detected member; A first gas supply component, connected to the first cavity, for filling the first cavity with gas; the gas contains gas of a specific component; a second air supply assembly, connected to the first cavity and used to fill the first cavity with air; A first detection component, used to detect whether the to-be-detected portion of the to-be-detected component has exploded; a second detection component, communicated with the second cavity, and used for detecting the gas of the specific component in the second cavity; A controller is respectively connected to the first air supply component, the second air supply component and the second detection component; the controller is used to: controlling the second air supply assembly to fill the first cavity with air; In response to the air pressure in the first cavity reaching a preset air pressure, controlling the first air supply assembly to fill the first cavity with gas; In response to the second detection component detecting that the gas leakage rate of the specific component in the second cavity reaches a preset value, the gas pressure in the first cavity when the gas leakage rate of the specific component in the second cavity reaches the preset value is obtained.

12. A battery production system, characterized in that: include: A transmission device for providing a housing; The explosion-proof detection device according to any one of claims 1 to 11, is used to perform explosion-proof detection on the shell.

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