Lithium battery explosion-proof valve test system and test method

Abstract

The invention relates to the technical field of lithium battery anti-explosion valves, in particular to a lithium battery anti-explosion valve testing system and method, and the lithium battery anti-explosion valve testing system comprises a closed container and a vacuum pump. The closed container is used for accommodating a lithium battery explosion-proof valve to be tested; the vacuum pump is connected with the closed container and used for extracting air in the closed container so as to increase the pressure in the closed container. In this way, the safety and stability of the lithium battery anti-explosion valve test can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery explosion-proof valves, and in particular to a lithium battery explosion-proof valve testing system and testing method. Background Art

[0002] With the widespread application of lithium batteries in the fields of power and energy storage, the safety of lithium batteries has received more and more attention. As a component of the lithium battery cover, the explosion-proof valve can provide a safe pressure release channel for lithium batteries and is an important component that plays a role in safety protection.

[0003] In order to ensure the safety of lithium batteries, the opening pressure of the explosion-proof valve needs to be tested to ensure that the explosion-proof valve can safely and effectively release the pressure when the internal pressure of the battery increases abnormally. However, the current testing scheme for explosion-proof valves can only disassemble the explosion-proof valve for separate testing, or test it in the empty aluminum shell state of the lithium battery (i.e., unfinished product state), which cannot safely and effectively test the finished lithium battery and cannot meet the current demand for spot check testing of explosion-proof valves of finished lithium batteries.

[0004] Therefore, how to improve the safety and stability of lithium battery explosion-proof valve testing to achieve testing of finished lithium battery explosion-proof valves has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of this, the present application provides a lithium battery explosion-proof valve testing system and testing method, which can improve the safety and stability of lithium battery explosion-proof valve testing.

[0006] In order to solve the above technical problems, on the one hand, the present application provides a lithium battery explosion-proof valve testing system, including a sealed container and a vacuum pump. The sealed container is used to accommodate the lithium battery explosion-proof valve to be tested; the vacuum pump is connected to the sealed container and is used to extract air inside the sealed container to increase the pressure inside the sealed container.

[0007] According to some embodiments of the present application, the lithium battery explosion-proof valve testing system further includes an image acquisition device and a first display screen. The image acquisition device is connected to the sealed container and is used to acquire an image of the lithium battery explosion-proof valve to be tested; the first display screen is connected to the image acquisition device and is used to display the image of the lithium battery explosion-proof valve to be tested.

[0008] According to some embodiments of the present application, the lithium battery explosion-proof valve testing system further includes: a pressure detection device, connected to the sealed container, for monitoring the pressure value inside the sealed container.

[0009] According to some embodiments of the present application, the pressure detection device is a vacuum pressure gauge, which is used to monitor and display the pressure value inside the closed container.

[0010] According to some embodiments of the present application, the pressure detection device is a pressure sensor, which is used to monitor the pressure value inside the sealed container. The lithium battery explosion-proof valve testing system also includes: a second display screen, which is used to connect to the pressure sensor and display the pressure value monitored by the pressure sensor.

[0011] In a second aspect, an embodiment of the present application provides a lithium battery explosion-proof valve testing method, which is applied to the lithium battery explosion-proof valve testing system of the above technical solution, including: placing the lithium battery explosion-proof valve to be tested into a closed container; turning on a vacuum pump; obtaining a bursting pressure value inside the closed container, the bursting pressure value being the pressure value inside the closed container when the lithium battery explosion-proof valve to be tested explodes; and generating a test result based on the bursting pressure value.

[0012] According to some embodiments of the present application, the step of generating a test result based on the bursting pressure value includes: determining whether the bursting pressure value is a preset pressure value; if so, generating a test result indicating that the explosion-proof valve of the lithium battery to be tested is qualified; if not, generating a test result indicating that the explosion-proof valve of the lithium battery to be tested is unqualified.

[0013] According to some embodiments of the present application, the step of obtaining the bursting pressure value inside the sealed container includes: obtaining the operating speed of the vacuum pump; and determining the bursting pressure value based on the operating speed and the bursting time of the lithium battery explosion-proof valve.

[0014] According to some embodiments of the present application, when a lithium battery explosion-proof valve testing system is provided with a pressure detection device, the step of obtaining a bursting pressure value inside a sealed container includes: obtaining a real-time pressure value inside the sealed container from the pressure detection device; obtaining the bursting time of the lithium battery explosion-proof valve; and filtering out the pressure value at the bursting time from the real-time pressure value to obtain the bursting pressure value.

[0015] According to some embodiments of the present application, when a lithium battery explosion-proof valve testing system is provided with an image acquisition device, the step of obtaining the explosion time of the lithium battery explosion-proof valve includes: obtaining an image acquired by the image acquisition device; and determining the explosion time of the lithium battery explosion-proof valve based on the acquisition time of the image.

[0016] The above technical solution of the present application has at least one of the following beneficial effects: by placing the explosion-proof valve of the lithium battery to be tested in a closed container, and using a vacuum pump to extract the air inside the closed container, the pressure inside the closed container is increased, and a high-pressure test environment is simulated for the explosion-proof valve of the lithium battery to be tested, so as to test whether the explosion-proof valve explodes when the internal pressure of the lithium battery reaches the pressure range designed for the explosion-proof valve. By applying pressure in a vacuum, damage to the structure of the finished lithium battery can be avoided, and the safety and stability of the lithium battery explosion-proof valve test can be improved.

[0017] In addition, through the setting of the image acquisition device and the first display screen, the image of the explosion-proof valve of the lithium battery to be tested can be acquired in real time and displayed. Without manual real-time observation, the status of the explosion-proof valve of the lithium battery to be tested can be monitored in real time, thereby improving the test efficiency and accuracy.

[0018] In addition, by setting up the pressure detection device, the pressure value inside the sealed container can be obtained in real time, so as to obtain the accurate pressure value inside the sealed container when the explosion-proof valve of the lithium battery to be tested explodes, thereby improving the test accuracy.

[0019] In addition, the speed of the vacuum pump can be adjusted according to the demand to improve the test efficiency and ensure the test accuracy. For example, when the pressure value inside the closed container is much lower than the pressure range designed for the explosion-proof valve, the speed of the vacuum pump can be increased to speed up the pressure growth rate inside the closed container; when the pressure value inside the closed container is close to the pressure range designed for the explosion-proof valve, the speed of the vacuum pump can be reduced to accurately monitor the explosion state of the explosion-proof valve and the pressure inside the closed container during the explosion, thereby improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a lithium battery explosion-proof valve testing system according to an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a lithium battery explosion-proof valve testing system according to an embodiment of the present application;

[0022] Figure 3 This is a schematic diagram of installing the image acquisition device of an embodiment of the present application on a closed container;

[0023] Figure 4 A schematic diagram of a lithium battery explosion-proof valve testing system according to an embodiment of the present application;

[0024] Figure 5 A schematic diagram of a lithium battery explosion-proof valve testing system according to an embodiment of the present application;

[0025] Figure 6 This is a flow chart of a lithium battery explosion-proof valve testing method according to an embodiment of the present application;

[0026] Figure 7 A schematic diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0028] With the widespread application of lithium batteries in the fields of power and energy storage, the safety of lithium batteries has received more and more attention. As a component of the lithium battery cover, the explosion-proof valve can provide a safe pressure release channel for the lithium battery and is an important component that plays a safety protection role. Specifically, when the internal pressure of the lithium battery exceeds the preset safety threshold, the explosion-proof valve will automatically open to release the gas accumulated inside the lithium battery, reduce the pressure inside the lithium battery, and prevent the lithium battery from rupturing or exploding due to excessive pressure.

[0029] In order to ensure the safety of lithium batteries, the opening pressure of the explosion-proof valve needs to be tested to ensure that the explosion-proof valve can safely and effectively release the pressure when the internal pressure of the battery increases abnormally. However, the current testing scheme for explosion-proof valves can only disassemble the explosion-proof valve for separate testing, or test it in the empty aluminum shell state of the lithium battery (i.e., unfinished product state), which cannot safely and effectively test the finished lithium battery and cannot meet the current demand for spot check testing of explosion-proof valves of finished lithium batteries.

[0030] The empty aluminum shell state of a lithium battery refers to the initial state of a lithium battery before electrode materials and electrolytes are loaded. In this state, the aluminum shell only exists as an external container for the lithium battery, and the entire manufacturing process of the battery has not yet been completed. The current test scheme for the empty aluminum shell state of a lithium battery is to punch a hole in the side of the aluminum shell of the lithium battery, and then connect an air pump through the hole to pump air into the aluminum shell of the lithium battery to increase the pressure inside the aluminum shell of the lithium battery, thereby testing whether the explosion-proof valve explodes when the internal pressure of the lithium battery reaches the pressure range designed for the explosion-proof valve. If the above test scheme is used to test finished lithium batteries, the structure of the finished lithium batteries may be damaged.

[0031] Therefore, how to improve the safety and stability of lithium battery explosion-proof valve testing to achieve testing of finished lithium battery explosion-proof valves has become a technical problem that needs to be solved urgently.

[0032] In order to solve the above technical problems, the present application proposes a lithium battery explosion-proof valve testing system, which includes a closed container and a vacuum pump connected to the closed container. The lithium battery explosion-proof valve to be tested is placed in the closed container, and the air inside the closed container is extracted by the vacuum pump to increase the pressure inside the closed container, so as to simulate a high-pressure test environment for the lithium battery explosion-proof valve to be tested, thereby testing whether the explosion-proof valve explodes when the internal pressure of the lithium battery reaches the pressure range designed for the explosion-proof valve. Through the vacuum pressure method, damage to the structure of the finished lithium battery can be avoided, and the safety and stability of the lithium battery explosion-proof valve test can be improved.

[0033] The lithium battery explosion-proof valve testing system proposed in the embodiment of the present application is described in detail below. Figure 1As shown, the lithium battery explosion-proof valve testing system 10 of the embodiment of the present application may include a closed container 11 and a vacuum pump 12 connected to the closed container 11. The closed container 11 is used to accommodate the lithium battery explosion-proof valve to be tested. The vacuum pump 12 is used to extract the air inside the closed container 11 to increase the pressure inside the closed container 11, thereby simulating the high-pressure environment required for the lithium battery explosion-proof valve to be tested.

[0034] "The explosion-proof valve of the lithium battery to be tested" refers to a lithium battery containing an explosion-proof valve or an explosion-proof valve of a lithium battery. In other words, the present application can test the explosion-proof valve in a finished or unfinished lithium battery, or can only test a separate explosion-proof valve. The specific selection can be made according to the needs and is not limited here. Among them, the lithium battery to be tested can be a cylindrical lithium battery, a square lithium battery or other types of lithium batteries equipped with an explosion-proof valve. The type of the lithium battery to be tested is not limited here.

[0035] The sealed container 11 has good air tightness. By placing the lithium battery explosion-proof valve to be tested in the sealed container 11, a stable pressure test environment can be provided for the lithium battery explosion-proof valve to be tested, thereby improving the accuracy of the test results. In one example, the material of the sealed container 11 may be glass. With the help of the transparency of the glass, it is convenient for the measurement personnel to observe the explosion state of the lithium battery explosion-proof valve to be tested inside the sealed container 11 in real time. In other examples, the material of the sealed container 11 may also be stainless steel or other materials that can ensure good air tightness and pressure resistance of the sealed container. The material of the sealed container 11 is not limited here. It can be understood that the shape of the sealed container 11 may include but is not limited to a cube and a cylinder. It can be set according to actual needs. The shape and volume of the sealed container 11 are not limited here.

[0036] In one embodiment, if Figure 2 As shown, the lithium battery explosion-proof valve testing system 10 may further include an image acquisition device 13 and a first display screen 14. The image acquisition device 13 is connected to the sealed container 11 and is used to acquire an image of the lithium battery explosion-proof valve to be tested. The first display screen 14 is connected to the image acquisition device 13 and is used to display an image of the lithium battery explosion-proof valve to be tested.

[0037] Specifically, the image acquisition device 13 can acquire the image of the explosion-proof valve of the lithium battery to be tested in real time, and transmit the image to the first display screen 14 for display, so that the state of the explosion-proof valve of the lithium battery to be tested can be monitored in real time without manual real-time observation, thereby improving the test efficiency and accuracy. The image acquisition device 13 can be an image sensor (such as a charge-coupled device (CCD)), a camera or a 3D structured light camera, etc., and the type of the image acquisition device is not limited here.

[0038] It can be understood that the imaging component (such as the lens of the camera) of the image acquisition device 13 should be aligned with the location of the explosion-proof valve to acquire an accurate image of the explosion-proof valve.

[0039] In one example, the installation position of the image acquisition device 13 on the sealed container 11 is as follows: Figure 3 As shown, in Figure 3 In the example, the sealed container 11 is a cube, the lithium battery 100 to be tested is a cylindrical lithium battery, and the explosion-proof valve 101 is arranged on the top of the outer shell of the lithium battery. For the sake of stability, the top of the outer shell of the lithium battery 100 to be tested is generally placed toward the top of the sealed container 11. Therefore, in this example, the image acquisition device 13 can be installed on the top surface of the sealed container 11 to capture a clear image of the explosion-proof valve. It is worth noting that the installation position of the image acquisition device 13 in the sealed container 11 can be determined according to the conventional placement position of the explosion-proof valve in the sealed container 11. Figure 3 This is only an example of the installation position of the image acquisition device 13, and the present application is not limited thereto.

[0040] It can be understood that when the sealed container 11 is made of transparent glass, the image acquisition device 13 can be installed inside or outside the sealed container 11, and when the sealed container 11 is made of other opaque materials, the image acquisition device 13 can be installed inside the sealed container 11.

[0041] In one embodiment, if Figure 4 As shown, the lithium battery explosion-proof valve test system 10 may further include a pressure detection device 15, which is connected to the sealed container 11 and is used to monitor the pressure value inside the sealed container 11. Through the setting of the pressure detection device 15, the pressure value inside the sealed container 11 can be obtained in real time, so as to obtain an accurate pressure value inside the sealed container 11 when the lithium battery explosion-proof valve to be tested explodes, thereby improving the test accuracy.

[0042] In one example, the pressure detection device 15 may be a vacuum pressure gauge, which is used to monitor and display the pressure value inside the sealed container 11. In one example, the pressure detection device 15 may be a digital vacuum gauge, which is used to monitor, record and display the pressure value inside the sealed container 11. It can be understood that the vacuum pressure gauge and the digital vacuum gauge can collect the pressure value and / or vacuum degree inside the sealed container 11. When the vacuum pressure gauge and the digital vacuum gauge collect the vacuum degree inside the sealed container 11, the vacuum degree can be converted into a pressure value based on the conversion relationship between the vacuum degree and the pressure value.

[0043] In one example, if Figure 5As shown, the lithium battery explosion-proof valve testing system 10 also includes a second display screen 16, and the pressure detection device 15 can be a pressure sensor. The pressure sensor is used to monitor the pressure value inside the closed container 11, and is connected to the second display screen 16 to display the pressure value monitored by the pressure sensor through the second display screen 16.

[0044] Understandably, Figure 5 The first display screen 14 and the second display screen 16 shown as different display screens are only an example. In other examples, the first display screen 14 and the second display screen 16 may also be the same display screen. In other words, the pressure sensor and the image acquisition device 13 may be connected to the same display screen or to different display screens respectively, which is not limited here.

[0045] This embodiment replaces the traditional pressurized test mode by applying pressure by vacuuming, which can avoid damage to the interior of the finished lithium battery and improve the safety and stability of the lithium battery explosion-proof valve test. This test method is more practical and has a wider range of applications. In addition, by setting up an image acquisition device and / or a pressure detection device, on the one hand, automated testing can be achieved to improve test efficiency, and on the other hand, the monitoring accuracy of the explosion-proof valve status and the pressure value inside the closed container can be improved, thereby improving test accuracy.

[0046] The lithium battery explosion-proof valve testing method proposed in the embodiment of the present application and applied to the lithium battery explosion-proof valve testing system 10 described in the above embodiment is described in detail below, and the lithium battery explosion-proof valve testing system 10 is not described in detail here.

[0047] like Figure 6 As shown, the lithium battery explosion-proof valve testing method may specifically include the following steps:

[0048] Step 110: Place the explosion-proof valve of the lithium battery to be tested into a sealed container.

[0049] Step 120: Turn on the vacuum pump.

[0050] The vacuum pump is turned on to start extracting air from the sealed container, thereby increasing the pressure inside the sealed container and providing a high-pressure test environment for the lithium battery explosion-proof valve to be tested.

[0051] In one example, after the vacuum pump is turned on, the speed of the vacuum pump can be adaptively adjusted according to demand to improve the test efficiency and ensure the test accuracy. For example, when the pressure value inside the closed container is much lower than the pressure range designed for the explosion-proof valve, the speed of the vacuum pump can be increased to speed up the pressure growth rate inside the closed container; when the pressure value inside the closed container is close to the pressure range designed for the explosion-proof valve, the speed of the vacuum pump can be reduced to accurately monitor the explosion state of the explosion-proof valve and the pressure inside the closed container during the explosion, thereby improving the test accuracy.

[0052] Step 130: Obtain the bursting pressure value inside the sealed container.

[0053] The bursting pressure value is the pressure value inside the sealed container when the explosion-proof valve of the lithium battery to be tested explodes. Specifically, the bursting pressure value inside the sealed container can be determined by using the working parameters of the vacuum pump or the monitoring data of the pressure detection device. The detailed scheme is described in detail in the following embodiments.

[0054] Step 140: Generate a test result based on the burst pressure value.

[0055] In one embodiment, whether the explosion-proof valve of the lithium battery to be tested is qualified can be verified by determining whether the explosion pressure value is a preset pressure value. The preset pressure value is the pressure value designed for the explosion-proof valve. In other words, the preset pressure value is the pressure value required for the explosion when the explosion-proof valve is working normally. It can be understood that the preset pressure value is related to the factory parameters of the explosion-proof valve, and the specific value of the preset pressure value is not limited here.

[0056] If the bursting pressure value is the preset pressure value, it means that the explosion-proof valve is not faulty, and a test result is generated that the explosion-proof valve of the lithium battery to be tested is qualified; if the bursting pressure value is not the preset pressure value, it means that the explosion-proof valve is faulty, and a test result is generated that the explosion-proof valve of the lithium battery to be tested is unqualified.

[0057] This embodiment uses the lithium battery explosion-proof valve test system described in the above embodiment to provide a high-voltage test environment for the lithium battery explosion-proof valve to be tested, without destroying the structure of the lithium battery, which can improve the safety and stability of the lithium battery explosion-proof valve test and achieve the test of the finished lithium battery. In addition, the speed of the vacuum pump can be adaptively adjusted according to demand to further improve the test efficiency and accuracy.

[0058] The above step 130, i.e., the step of obtaining the bursting pressure value inside the sealed container, is described in detail below.

[0059] In one embodiment, the operating speed of the vacuum pump can be obtained, and then the bursting pressure value can be determined based on the operating speed and the bursting time of the lithium battery explosion-proof valve. For example, if the operating speed of the vacuum pump is 1st gear speed S1 (Pa / min) and the bursting time is 20min, then the bursting pressure value inside the sealed container can be P0-20×S1, where P0 refers to the initial pressure value of the sealed container, which is generally atmospheric pressure.

[0060] In one example, the rotation speed of the vacuum pump may change during operation, so the rotation speed of the vacuum pump at each stage and the corresponding working time can be recorded. Then, the explosion pressure value inside the closed container can be determined based on the rotation speed of the vacuum pump at each stage and the corresponding working time before the explosion-proof valve explodes.

[0061] For example, before the explosion-proof valve explodes, the vacuum pump first operates at the 2nd speed S2 (Pa / min) for 10 minutes, and then switches to the 1st speed S1 (Pa / min) and operates for 5 minutes. Therefore, the explosion pressure value inside the closed container can be P0-10min×S2+5min×S2.

[0062] In another embodiment, the lithium battery explosion-proof valve test system is provided with a pressure detection device, and the step of obtaining the bursting pressure value inside the sealed container may include: obtaining the real-time pressure value inside the sealed container from the pressure detection device. Obtaining the bursting time of the lithium battery explosion-proof valve, and filtering out the pressure value under the bursting time from the real-time pressure value to obtain the bursting pressure value.

[0063] In one example, the explosion time of the lithium battery explosion-proof valve can be obtained through observation and recording by the tester. In one example, when the lithium battery explosion-proof valve test system is provided with an image acquisition device, the explosion time of the lithium battery explosion-proof valve can be determined by acquiring an image acquired by the image acquisition device and then based on the acquisition time of the image.

[0064] An embodiment of the present application also provides an electronic device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement the lithium battery explosion-proof valve testing method provided in the above method embodiment.

[0065] The memory can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, application programs required for functions, etc.; the data storage area can store data created according to the use of the device, etc. In addition, the memory can include a high-speed random access memory and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory can also include a memory controller to provide the processor with access to the memory.

[0066] In a specific embodiment, Figure 7 A schematic diagram of the structure of an electronic device for implementing the embodiment of the present application is shown, and the electronic device may be a computer terminal, a mobile terminal or other devices.

[0067] like Figure 7As shown, an embodiment of the present application provides an electronic device 700, including: a processor 701 and a memory 702, wherein computer program instructions are stored in the memory 702, wherein when the computer program instructions are executed by the processor, the processor 701 executes the lithium battery explosion-proof valve testing method as described in the above embodiment.

[0068] Furthermore, if Figure 7 As shown, the electronic device 700 further includes a network interface 703 , an input device 704 , a hard disk 705 , and a display device 706 .

[0069] The above-mentioned interfaces and devices can be interconnected through a bus architecture. The bus architecture can be a bus and bridge that can include any number of interconnected buses. Specifically, one or more central processing units (CPUs) represented by processor 701 and various circuits of one or more memories represented by memory 702 are connected together. The bus architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits together. It can be understood that the bus architecture is used to achieve connection and communication between these components. In addition to the data bus, the bus architecture also includes a power bus, a control bus, and a status signal bus, which are all well known in the art, so they are not described in detail herein.

[0070] The network interface 703 can be connected to a network (such as the Internet, a local area network, etc.), obtain relevant data from the network, and save it in the hard disk 705.

[0071] The input device 704 can receive various instructions input by the operator and send them to the processor 701 for execution. The input device 704 can include a keyboard or a pointing device, such as a mouse, a trackball, a touch pad or a touch screen.

[0072] The display device 706 can display the result obtained by the processor 701 executing the instruction.

[0073] The memory 702 is used to store programs and data necessary for the operation of the operating system, as well as data such as intermediate results during the calculation process of the processor 701.

[0074] It is understood that the memory 702 in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. The memory 702 of the apparatus and method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0075] In some implementations, the memory 702 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof: an operating system 7021 and an application 7022 .

[0076] The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 7022 includes various application programs, such as a browser, etc., for implementing various application services. The program for implementing the method of the embodiment of the present application can be included in the application 7022.

[0077] The processor 701, when calling and executing the application and data stored in the memory 702, specifically, the program or instruction stored in the application 7022, executes the lithium battery explosion-proof valve testing method as described in the above embodiment.

[0078] The method disclosed in the above embodiment of the present application can be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 701. The above-mentioned processor 701 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a readily available programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor are combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware.

[0079] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application or a combination thereof.

[0080] For software implementation, the techniques described herein can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0081] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the processor executes the lithium battery explosion-proof valve testing method as described in the above embodiment.

[0082] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0083] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0084] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the sending and receiving method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (RandomAccess Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0085] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A lithium battery explosion-proof valve testing system, characterized in that: include: A sealed container for containing the explosion-proof valve of the lithium battery to be tested; A vacuum pump is connected to the sealed container and is used to extract air from the sealed container to increase the pressure inside the sealed container.

2. The lithium battery explosion-proof valve testing system according to claim 1, characterized in that: The lithium battery explosion-proof valve testing system also includes: An image acquisition device, connected to the sealed container, for acquiring an image of the explosion-proof valve of the lithium battery to be tested; The first display screen is connected to the image acquisition device and is used to display the image of the lithium battery explosion-proof valve to be tested.

3. The lithium battery explosion-proof valve testing system according to claim 1, characterized in that: The lithium battery explosion-proof valve testing system also includes: The pressure detection device is connected to the sealed container and is used to monitor the pressure value inside the sealed container.

4. The lithium battery explosion-proof valve testing system according to claim 3, characterized in that: The pressure detection device is a vacuum pressure gauge, which is used to monitor and display the pressure value inside the closed container.

5. The lithium battery explosion-proof valve testing system according to claim 3, characterized in that: The pressure detection device is a pressure sensor, and the pressure sensor is used to monitor the pressure value inside the closed container; The lithium battery explosion-proof valve testing system also includes: a second display screen, which is used to connect with the pressure sensor and display the pressure value monitored by the pressure sensor.

6. A lithium battery explosion-proof valve testing method, characterized in that: The lithium battery explosion-proof valve testing system as described in any one of claims 1 to 5 comprises the following steps: Place the explosion-proof valve of the lithium battery to be tested into a sealed container; Turn on the vacuum pump; Obtaining a bursting pressure value inside the sealed container, wherein the bursting pressure value is a pressure value inside the sealed container when the explosion-proof valve of the lithium battery to be tested explodes; Based on the burst pressure value, a test result is generated.

7. The lithium battery explosion-proof valve testing method according to claim 6, characterized in that: The step of generating a test result based on the bursting pressure value comprises: Determining whether the bursting pressure value is a preset pressure value; If yes, a test result is generated indicating that the explosion-proof valve of the lithium battery to be tested is qualified; If not, a test result indicating that the explosion-proof valve of the lithium battery to be tested is unqualified is generated.

8. The lithium battery explosion-proof valve testing method according to claim 6, characterized in that: The step of obtaining the bursting pressure value inside the sealed container comprises: Obtaining the operating speed of the vacuum pump; The explosion pressure value is determined based on the operating rotation speed and the explosion time of the lithium battery explosion-proof valve.

9. The lithium battery explosion-proof valve testing method according to claim 6, characterized in that: When the lithium battery explosion-proof valve testing system is provided with a pressure detection device, the step of obtaining the bursting pressure value inside the sealed container includes: Obtaining a real-time pressure value inside the sealed container from the pressure detection device; Obtaining the explosion time of the lithium battery explosion-proof valve; The pressure value at the blasting time is screened out from the real-time pressure values ​​to obtain the blasting pressure value.

10. The lithium battery explosion-proof valve testing method according to claim 9, characterized in that: When the lithium battery explosion-proof valve testing system is provided with an image acquisition device, the step of obtaining the explosion time of the lithium battery explosion-proof valve includes: Acquiring the image captured by the image acquisition device; The explosion time of the lithium battery explosion-proof valve is determined based on the acquisition time of the image.

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