Arc test device for battery and arc test method for battery

Abstract

The application relates to an arc test device and an arc test method of a battery, the device comprising a closed container, a positive electrode sheet, a negative electrode sheet, an environment module, a test circuit and a processor; the positive electrode sheet, the negative electrode sheet and the environment module are arranged in the closed container, a first side of the positive electrode sheet and a first side of the negative electrode sheet are arranged in the environment module, a second side of the positive electrode sheet and a second side of the negative electrode sheet pass through the closed container through wires and are connected with the test circuit, and the test circuit is further connected with the processor; the processor is used for controlling the test circuit to generate different test signals and acquiring arc signals generated by the positive electrode sheet and the negative electrode sheet under different test signals in the case that the closed container is filled with environment gas. By filling the electrolyte or the battery active material powder in the environment module to simulate the electrolyte environment in the battery, and by filling the environment gas in the closed container to simulate the external environment after the arc occurs, the test accuracy can be improved.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to an arc testing device and a method for testing the arc of a battery. Background Technology

[0002] With the continuous expansion of the battery market, batteries are widely used in various electronic devices, such as smartphones, laptops, and electric vehicles. However, battery safety is a major concern for consumers, as fires caused by electric arcing from battery systems account for as much as 60%. Therefore, research on electric arcs is of paramount importance. To delve into the formation mechanism, characteristics, and impact on materials and systems of electric arcs, researchers have developed various electric arc generating devices.

[0003] However, the arc generating devices described in the relevant records have problems with inaccurate testing when conducting arc tests. Summary of the Invention

[0004] Therefore, it is necessary to provide a battery arc testing device and a battery arc testing method that can improve testing accuracy in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides an arc testing device for a battery, which includes: a sealed container, a positive electrode plate, a negative electrode plate, an environmental module, a test circuit, and a processor;

[0006] The positive electrode, negative electrode, and environmental module are placed in a sealed container. The first side of the positive electrode and the first side of the negative electrode are located inside the environmental module. The second side of the positive electrode and the second side of the negative electrode pass through the sealed container with wires and are connected to the test circuit. The test circuit is also connected to the processor.

[0007] The processor is used to control the test circuit to generate different test signals in a sealed container filled with ambient gas, and to acquire the arc signals generated by the positive and negative electrode plates under different test signals.

[0008] In one embodiment, the arc testing apparatus further includes: a signal acquisition device; the signal acquisition device is connected to the processor and the testing circuit respectively; the signal acquisition device is disposed outside the sealed container;

[0009] The signal acquisition device is used to acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0010] Correspondingly, the processor is used to control the test circuit to generate different test signals and acquire arc signals from the signal acquisition device when the sealed container is filled with ambient gas.

[0011] In one embodiment, the signal acquisition device includes: an image acquisition device and an electrical signal acquisition device; the image acquisition device is connected to the processor, and the electrical signal acquisition device is connected to the processor and the test circuit respectively;

[0012] Image acquisition equipment is used to acquire images of electric arcs generated by the positive and negative electrode plates;

[0013] The signal acquisition equipment is used to acquire the arc signals generated by the positive and negative electrode plates.

[0014] In one embodiment, the electrical signal acquisition device includes a voltage acquisition device and a current acquisition device; the voltage acquisition device is connected in parallel with the test circuit, the current acquisition device is connected in series with the test circuit, and the voltage acquisition device and the current acquisition device are also connected to a processor.

[0015] In one embodiment, the image acquisition device includes a high-speed image acquisition device, and the voltage acquisition device and current acquisition device include a high-speed data acquisition device.

[0016] In one embodiment, the test circuit includes a voltage regulator and an electronic load;

[0017] The processor is used to regulate the voltage source and electronic load to generate different test signals.

[0018] In one embodiment, the processor is used to adjust the voltage value of the regulated power supply to a preset voltage value; the preset voltage value is not lower than the critical voltage value of the arc signal generated by the positive electrode and the negative electrode.

[0019] In one embodiment, a predetermined distance is spaced between the first side of the positive electrode and the first side of the negative electrode.

[0020] In one embodiment, the environmental module is filled with electrolyte and / or battery active material powder; the electrolyte includes electrolyte when the battery is in a normal state and electrolyte when the battery is in a fault state; the battery active material powder includes battery active material powder when the battery is in a normal state and battery active material powder when the battery is in a fault state.

[0021] Secondly, this application also provides a method for testing the electric arc of a battery, the method being applied to the processor of any one of the first aspects, the method comprising:

[0022] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0023] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0024] The arc signal is processed and analyzed to obtain the processing results.

[0025] Thirdly, this application also provides an arc testing device for batteries, the device comprising:

[0026] The control module controls the test circuit to generate different test signals when the sealed container is filled with ambient gas.

[0027] The acquisition module acquires the arc signals generated by the positive and negative electrode plates under different test signals.

[0028] The processing module processes and analyzes the arc signal to obtain the processing results.

[0029] Fourthly, this application also provides a computer device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0030] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0031] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0032] The arc signal is processed and analyzed to obtain the processing results.

[0033] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0034] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0035] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0036] The arc signal is processed and analyzed to obtain the processing results.

[0037] Sixthly, this application also provides a computer program product, which includes a computer program that, when executed by a processor, performs the following steps:

[0038] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0039] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0040] The arc signal is processed and analyzed to obtain the processing results.

[0041] The aforementioned arc testing device and method for batteries include: a sealed container, a positive electrode plate, a negative electrode plate, an environmental module, a test circuit, and a processor. The positive electrode plate, negative electrode plate, and environmental module are placed in the sealed container, with the first side of the positive electrode plate and the first side of the negative electrode plate positioned within the environmental module. The second side of the positive electrode plate and the second side of the negative electrode plate pass through the sealed container via wires and are connected to the test circuit, which is also connected to the processor. The processor controls the test circuit to generate different test signals and acquires the arc signals generated by the positive and negative electrode plates under different test signals when the sealed container is filled with environmental gas. By filling the environmental module with electrolyte or battery active material powder, the electrolyte environment inside the battery can be simulated. Similarly, filling the sealed container with environmental gas simulates the external environment after an arc occurs. By simulating both the internal electrolyte environment and the external environment after an arc occurs, the actual environment in which the arc occurs can be accurately simulated. Therefore, the arc signal measured using this arc testing device is more accurate. Attached Figure Description

[0042] Figure 1 This is a structural block diagram of an arc testing device for a battery in one embodiment;

[0043] Figure 2 This is a schematic diagram of the physical structure of the environment module in one embodiment;

[0044] Figure 3 This is a top view of the structure of the environment module in one embodiment;

[0045] Figure 4 This is a block diagram of the arc testing device for a battery in another embodiment;

[0046] Figure 5 This is a block diagram of the arc testing device for a battery in another embodiment;

[0047] Figure 6 This is a block diagram of the arc testing device for a battery in another embodiment;

[0048] Figure 7 This is a block diagram of the arc testing device for a battery in another embodiment;

[0049] Figure 8 This is a block diagram of the arc testing device for a battery in another embodiment;

[0050] Figure 9 This is a schematic diagram of an arc image of an arc signal in one embodiment;

[0051] Figure 10 This is a schematic diagram of an arc signal in another embodiment;

[0052] Figure 11 This is a flowchart illustrating the arc testing method for a battery in another embodiment;

[0053] Figure 12 This is a structural block diagram of an arc testing device for a battery in one embodiment;

[0054] Figure 13 This is an internal structural diagram of a computer device in one embodiment;

[0055] Explanation of reference numerals in the attached figures:

[0056] Sealed container 10; positive electrode 101; negative electrode 102; environmental module 103; test circuit 20; processor 30; signal acquisition device 40; voltage acquisition device 4021; current acquisition device 4022; voltage regulator 201; electronic load 202. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0058] With the continuous expansion of the battery market, batteries are widely used in various electronic devices, such as smartphones, laptops, and electric vehicles. However, battery safety is a major concern for consumers, as fires caused by arcing from battery systems account for as much as 60%. Therefore, research on arcing is of paramount importance. To delve into the formation mechanism, characteristics, and impact on materials and systems, researchers have developed various arc-generating devices. However, the arc-generating devices described in existing records suffer from inaccurate testing methods when performing arc tests.

[0059] In one embodiment, such as Figure 1 As shown, an arc testing device for a battery is provided. The arc testing device for a battery includes: a sealed container 10, a positive electrode 101, a negative electrode 102, an environmental module 103, a test circuit 20, and a processor 30.

[0060] The positive electrode, negative electrode, and environmental module are placed in a sealed container. The first side of the positive electrode and the first side of the negative electrode are located inside the environmental module. The second side of the positive electrode and the second side of the negative electrode pass through the sealed container with wires and are connected to the test circuit. The test circuit is also connected to the processor. The distance between the first side of the positive electrode and the first side of the negative electrode is a preset distance L, for example, 4cm.

[0061] The processor controls the test circuit to generate different test signals and acquire the arc signals generated by the positive and negative electrode plates under different test signals in a sealed container filled with ambient gas. The arc signals include arc images and electrical signals. The arc images include images and sounds of the arc phenomenon occurring on the positive and negative electrode plates, while the electrical signals include voltage and current signals of the arc phenomenon occurring on the positive and negative electrode plates.

[0062] The aforementioned positive electrode plate serves as the anode for generating the electric arc. The shape of the positive electrode plate can be rectangular, circular, strip-shaped, mesh-shaped, regular, irregular, planar, three-dimensional, or bent, or other shapes. The specific shape of the positive electrode plate can be determined according to actual testing requirements, and this embodiment does not impose any limitations. The material of the positive electrode plate can be conductive materials such as metal, graphite, conductive polymer, nanomaterials, or ceramics. The material of the positive electrode plate can be determined according to actual testing requirements, and this embodiment does not impose any limitations. The length, width, and thickness of the positive electrode plate can be determined according to testing requirements, and this embodiment does not impose any limitations. For example, the length of the positive electrode plate can be 8cm, the width can be 4cm, and the thickness can be 1mm. The aforementioned negative electrode plate serves as the cathode for generating the electric arc. The shape of the negative electrode plate can be rectangular, circular, strip-shaped, mesh-shaped, regular, irregular, planar, three-dimensional, or bent, or other shapes. The specific shape of the negative electrode plate can be determined according to actual testing requirements, and this embodiment does not impose any limitations. The negative electrode can be made of conductive materials such as metal, graphite, conductive polymer, nanomaterials, or ceramics. The material of the negative electrode can be determined based on actual testing requirements; this embodiment does not impose any limitations. The length, width, and thickness of the negative electrode can also be determined based on testing requirements; this embodiment does not impose any limitations. For example, the negative electrode can be 8cm long, 4cm wide, and 1mm thick. Both the positive and negative electrodes are made of conductive materials, and their materials can be the same or different. The shapes of the positive and negative electrodes can be the same or different. The first side of both the positive and negative electrodes is the side closest to the environmental module, while the second side of both electrodes is the side furthest from the environmental module.

[0063] The aforementioned environmental module is filled with electrolyte or battery active material powder. The electrolyte includes both the electrolyte used when the battery is in a normal state and the electrolyte used when the battery is in a faulty state. The battery active material powder includes both the battery active material powder used when the battery is in a normal state and the battery active material powder used when the battery is in a faulty state. The environmental module is made of an insulating material, specifically mica. The shape of the environmental module can be a recessed, bowl-shaped, disc-shaped, or barrel-shaped container to hold the electrolyte or battery active material powder. For example, ... Figure 2As shown, the environment module can be a specially shaped base composed of two opposing inclined planes, and its top view is as follows. Figure 3 As shown, a groove is designed between the two inclined surfaces as an environmental module, where electrolyte or battery active material powder can be added. The groove is sealed with insulating adhesive on both sides to prevent electrolyte / battery active material from flowing out during the experiment and affecting the experimental results. The electrolyte includes a solute and a solvent. The solute is lithium hexafluorophosphate, and the solvent is a mixture of ethylene hexacarbonate and methyl ethyl carbonate, with a ratio of ethylene hexacarbonate to methyl ethyl carbonate of 3:7. The battery active material powder includes at least one of graphite, silicon carbide powder, lithium iron phosphate powder, and ternary lithium active material mixture powders with different states of charge. The environmental gas includes any one of air, nitrogen, carbon dioxide, and an inert gas, including the environmental gas when the battery is in normal condition and the environmental gas when the battery is in abnormal condition.

[0064] The aforementioned sealed container is made of transparent acrylic or transparent glass. The container can be cube-shaped, cylindrical, spherical, or even a glove box. The sealed container has openings through which wires can pass. To ensure the container remains airtight even with the openings and wires, threads can be tapped into the openings, bolts and nuts can be used to secure the wires, and insulating adhesive can be used to seal the gaps where the wires pass through.

[0065] In this embodiment, an arc testing device can be pre-built. The specific construction process is as follows: First, the positive electrode plate is used as the anode for arc generation, and the negative electrode plate as the cathode. Then, the first side of the positive electrode plate and the first side of the negative electrode plate are fixed inside the environmental module. Next, the distance between the first sides of the positive and negative electrode plates is adjusted. After adjusting the distance to a preset value, the adjusted positive electrode plate, negative electrode plate, and environmental module are placed in a sealed container. The second sides of the positive and negative electrode plates are connected by wires and then connected to the test circuit through the sealed connector of the sealed container. After the arc testing device is built, a test environment can be simulated. Specifically, electrolyte can be added to the environmental module to simulate the electrolyte environment inside the battery, and / or battery active material powder can be added to the environmental module to simulate the active material environment inside the battery. After filling the environmental module with electrolyte and / or battery active material powder, ambient gas can be filled into the sealed container to simulate the external environment after an arc occurs. After setting up the arc testing device and the simulated testing environment, the arc testing process of the battery can begin. Specifically, the processor can control the test circuit to generate different test signals and acquire the arc signals generated by the positive and negative electrode plates under different test signals.

[0066] The arc testing device for batteries provided in this application can simulate the electrolyte environment inside the battery by filling the environmental module with electrolyte or battery active material powder, and can simulate the external environment after an arc occurs by filling the sealed container with ambient gas. By simulating the electrolyte environment inside the battery and the external environment after an arc occurs, the real environment in which the arc occurs can be accurately simulated. Therefore, the arc signal measured by this arc testing device is more accurate.

[0067] In one embodiment, such as Figure 4 As shown, the above-mentioned arc testing device also includes a signal acquisition device 40.

[0068] The signal acquisition device is connected to the processor and the test circuit respectively; the signal acquisition device is located outside the sealed container.

[0069] The aforementioned signal acquisition device is used to acquire the arc signals generated by the positive and negative electrode plates under different test signals; correspondingly, the processor is used to control the test circuit to generate different test signals and acquire the arc signals from the signal acquisition device when the sealed container is filled with ambient gas.

[0070] The signal acquisition device includes an image acquisition device 401 and an electrical signal acquisition device 402; the image acquisition device is connected to the processor, and the electrical signal acquisition device is connected to the processor and the test circuit respectively.

[0071] The aforementioned image acquisition device is used to acquire arc images of the arc signals generated by the positive and negative electrode plates; the signal acquisition device is used to acquire the arc signals generated by the positive and negative electrode plates.

[0072] The aforementioned image acquisition device can be a camera. The electrical signal acquisition device 402 includes a voltage acquisition device 4021 and a current acquisition device 4022. The voltage acquisition device is connected in parallel with the test circuit, and the current acquisition device is connected in series with the test circuit. The voltage acquisition device is used to acquire the voltage signals generated by the positive and negative electrode plates, and the current acquisition device is used to acquire the current signals generated by the positive and negative electrode plates. The image acquisition device includes a high-speed image acquisition device, and the voltage and current acquisition devices include high-speed data acquisition devices.

[0073] In this embodiment, an image acquisition device can be installed outside the sealed container, a voltage acquisition device can be connected in parallel with the test circuit, and a current acquisition device can be connected in series with the test circuit. After the arc testing device is set up, the test environment is simulated, and the test circuit is connected, the processor can control the test circuit to generate different test signals. The image acquisition device can acquire arc images of the arc signals generated by the positive and negative electrode plates, as well as the electrical signals corresponding to the arc signals generated by the positive and negative electrode plates. Then, the arc images and electrical signals are sent to the processor, which can then obtain the arc signals generated by the positive and negative electrode plates under different test signals. Optionally, after the image acquisition device acquires the arc images and electrical signals, it can store the arc images and electrical signals in local memory. Then, the processor can actively retrieve the arc images and electrical signals from the local memory of the image acquisition device, thus obtaining the arc signals generated by the positive and negative electrode plates under different test signals.

[0074] In one embodiment, such as Figure 4 As shown, the above test circuit includes: a voltage regulator 201 and an electronic load 202.

[0075] The processor is used to adjust the voltage regulator and electronic load to generate different test signals. The value of the electronic load can be determined by factors such as the battery's internal resistance and capacitance.

[0076] The aforementioned processor is used to adjust the voltage value of the regulated power supply to a preset voltage value. This preset voltage value is not lower than the critical voltage value of the arc signal generated by the positive and negative electrodes; that is, the preset voltage value can be greater than or equal to the critical voltage value of the arc signal generated by the positive and negative electrodes. Specifically, if an arc signal still exists or remains stable within a preset time after the arc signal is generated by the positive and negative electrodes, this indicates that the arc signal has reached a steady state, and the critical voltage value of the arc signal can be used as the preset voltage value.

[0077] In this embodiment, after setting up the arc testing device, simulating the testing environment, and connecting the testing circuit, the processor can fix the value of the voltage regulator and dynamically adjust the value of the electronic load to generate different test signals. Optionally, the processor can fix the value of the voltage regulator and dynamically adjust the value of the electronic load to generate different test signals. Optionally, the processor can fix the value of the electronic load and dynamically adjust the value of the voltage regulator to generate different test signals. Optionally, the processor can combine dynamically adjusting the value of the voltage regulator and adjusting the value of the electronic load to generate different test signals.

[0078] In one embodiment, such as Figure 4As shown, an arc testing device for a battery is also provided. The arc testing device for a battery includes: a sealed container, a positive electrode plate, a negative electrode plate, an environmental module, a voltage regulator, an electronic load, an image acquisition device, a voltage acquisition device (e.g., a high-speed digital voltmeter), a current acquisition device (e.g., a high-speed digital ammeter), and a processor.

[0079] The positive electrode, negative electrode, and environmental module are placed in a sealed container. The first side of the positive electrode and the first side of the negative electrode are located inside the environmental module. The second side of the positive electrode and the second side of the negative electrode pass through the sealed container with wires and are connected to a test circuit consisting of a voltage regulator and an electronic load. The voltage acquisition device is connected in parallel with the test circuit consisting of the voltage regulator and the electronic load. The current acquisition device is connected in series with the test circuit consisting of the voltage regulator and the electronic load. The image acquisition device is located outside the sealed container. The processor is connected to the voltage regulator, the electronic load, the image acquisition device, the voltage acquisition device, and the current acquisition device.

[0080] The environmental module is filled with electrolyte or battery active material powder. The electrolyte includes a solute and a solvent; the solute is lithium hexafluorophosphate, and the solvent is a mixture of ethylene hexacarbonate and methyl ethyl carbonate. The battery active material powder includes at least one of graphite, silicon carbide powder, lithium iron phosphate powder, and ternary lithium active material powder. The environmental gas includes any one of air, nitrogen, carbon dioxide, and an inert gas. The sealed container is made of transparent acrylic or transparent glass.

[0081] The aforementioned processor is used to adjust the voltage regulator and electronic load to generate different test signals in a sealed container filled with ambient gas, and to acquire arc images from an image acquisition device, voltage signals from a voltage acquisition device, and current signals from a current acquisition device. The image acquisition device is used to acquire arc images of the arc signals generated by the positive and negative electrode plates; the voltage acquisition device is used to acquire the voltage signals generated by the positive and negative electrode plates; and the current acquisition device is used to acquire the current signals generated by the positive and negative electrode plates.

[0082] The aforementioned image acquisition device is used to acquire arc images of the arc signals generated by the positive and negative electrode plates, the voltage acquisition device is used to acquire voltage signals generated by the positive and negative electrode plates, and the current acquisition device is used to acquire current signals generated by the positive and negative electrode plates.

[0083] In this embodiment of the application, the process of performing an arc test on a battery using a battery arc testing device is as follows:

[0084] 1. Construction of the arc testing device

[0085] Using insulating materials such as mica, a uniquely shaped base consisting of two opposing inclined planes was designed. The actual product image and top view are shown below. Figure 2 and Figure 3 As shown, a groove is designed between the two inclined surfaces for adding electrolyte or battery active material powder. The sides of the groove are sealed with insulating adhesive to prevent the electrolyte / battery active material from flowing out during the experiment and affecting the experimental results.

[0086] When installing this arc testing device, first seal both sides of the groove with insulating adhesive. After the adhesive has solidified, select metal sheets of the target size (e.g., 8cm in length, 4cm in width, and 1mm in thickness) as electrodes, and place the two metal electrode sheets along the inclined plane. Therefore, designing mica bases with different groove gaps can meet the requirements for experiments with different electrode gaps. Use clamps to fix the two electrodes on the inclined plane to ensure that the gap between the electrodes remains constant during the experiment. See the physical diagram and top view diagram as follows. Figure 5 and Figure 6 As shown. Connect the positive and negative terminals of the power supply to the two electrodes respectively using wires with alligator clips, as shown in the top view. Figure 7 As shown.

[0087] Place the aforementioned arc testing device into a transparent container, such as a sealed acrylic glove box / glass glove box. Make an opening in the transparent container to allow wires to pass through and connect the arc testing device to the power supply. Simultaneously, it is necessary to maintain the airtightness of the container even with the opening and wires passing through. For example, thread the opening, use bolts and nuts to secure the wires, and seal the gaps where the wires pass through with insulating adhesive. After installation... Figure 8 As shown. Simultaneously, cameras, voltage measuring devices, and current measuring devices are installed outside the transparent container to collect arc sound, images, current, and voltage signals.

[0088] 2. Simulation of the electric arc generation environment

[0089] (1) Simulating the arc-generating medium inside the battery: to Figure 8 Electrolyte (such as a common electrolyte, with lithium hexafluorophosphate as the lithium salt solute and a mixture of ethylene carbonate and EMC (methyl ethyl carbonate) in a 3:7 ratio as the solvent) is dripped into the groove, and the electrolyte can immerse the front ends of the two electrode plates; or battery material powder (such as a mixture of graphite, silicon carbide, lithium iron phosphate, and ternary lithium active materials with different states of charge) is added to the groove.

[0090] (2) Simulating the external environment after an electric arc occurs: by sending... Figure 8The sealed container shown is filled with ambient gases such as air, nitrogen, carbon dioxide, or inert gases to simulate the external environment after an electric arc occurs. For example, to simulate a nitrogen environment, a nitrogen cylinder is smoothly introduced into the glove box through its existing inlet valve, while the original gas in the glove box is discharged through the exhaust valve. The simulation of a nitrogen environment is achieved when the original gas in the glove box is completely exhausted and it is filled with nitrogen.

[0091] 3. Record electric arc phenomena under different environments.

[0092] Preset the electronic load resistor and regulated power supply voltage values, and turn on the high-speed data acquisition and camera for recording. Connecting the circuit generates an electric arc. After the arc subsides, disconnect the power supply, turn off the high-speed data acquisition and camera, and the experiment ends. Typical arc images recorded are shown below. Figure 9 As shown, current and voltage are as follows Figure 10 As shown.

[0093] The arc testing device for batteries provided in this application can simulate the electrolyte environment inside the battery by filling the environmental module with electrolyte or battery active material powder, and can simulate the external environment after an arc occurs by filling the sealed container with ambient gas. By simulating the electrolyte environment inside the battery and the external environment after an arc occurs, the real environment in which the arc occurs can be accurately simulated. Therefore, the arc signal measured by this arc testing device is more accurate.

[0094] In one embodiment, a method for testing the arc of a battery is also provided, such as... Figure 11 As shown, the method includes:

[0095] S501 controls the test circuit to generate different test signals when the sealed container is filled with ambient gas.

[0096] S502 acquires the arc signals generated by the positive and negative electrode plates under different test signals.

[0097] S503 processes and analyzes the arc signal to obtain the processing results.

[0098] The methods described in each of the above steps have been described in the foregoing embodiments. For details, please refer to the foregoing descriptions. They will not be repeated here.

[0099] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0100] Based on the same inventive concept, this application also provides an arc testing device for a battery to implement the arc testing method for the battery described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more embodiments of the arc testing device for batteries provided below can be found in the limitations of the arc testing method for batteries described above, and will not be repeated here.

[0101] In one embodiment, such as Figure 12 As shown, an arc testing device for a battery is provided, comprising:

[0102] The control module 11 controls the test circuit to generate different test signals when the sealed container is filled with ambient gas.

[0103] The acquisition module 12 acquires the arc signals generated by the positive and negative electrode plates under different test signals.

[0104] Processing module 13 processes and analyzes the arc signal to obtain the processing results.

[0105] Each module in the aforementioned arc testing device for batteries can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0106] In one embodiment, a computer device is provided, which may be a terminal or a server, and its internal structure diagram may be as follows. Figure 13As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a method for testing the arc of a battery. The display unit is used to form a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0107] Those skilled in the art will understand that Figure 13 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0108] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0109] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0110] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0111] The arc signal is processed and analyzed to obtain the processing results.

[0112] The computer device provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0113] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0114] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0115] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0116] The arc signal is processed and analyzed to obtain the processing results.

[0117] The computer-readable storage medium provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0118] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0119] In a sealed container filled with ambient gas, the control test circuit generates different test signals.

[0120] Acquire the arc signals generated by the positive and negative electrode plates under different test signals;

[0121] The arc signal is processed and analyzed to obtain the processing results.

[0122] The computer program product provided in the above embodiments has a similar implementation principle and technical effect to the above method embodiments, and will not be described again here.

[0123] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0124] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0125] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An arc testing device for a battery, characterized in that, The arc testing device includes: a sealed container, a positive electrode plate, a negative electrode plate, an environmental module, a testing circuit, and a processor; a voltage regulator and an electronic load, wherein the processor is connected to the voltage regulator and the electronic load; The environmental module is made of insulating material and has a base with two opposing inclined surfaces, with a groove formed between the two opposing inclined surfaces to accommodate the arc-generating medium. The positive electrode and the negative electrode are respectively placed on the two opposing inclined surfaces, such that the first side of the positive electrode and the first side of the negative electrode extend into the groove and are spaced apart by a preset distance, and the positive electrode and the negative electrode are fixed by the two opposing inclined surfaces to maintain the preset distance; The positive electrode, the negative electrode, and the environmental module are placed in the sealed container. The second side of the positive electrode and the second side of the negative electrode are connected to the test circuit via wires. The test circuit is also connected to the processor. The environmental module is filled with the arc-generating medium, which includes electrolyte and / or battery active material powder in normal state, and electrolyte and / or battery active material powder in fault state, to simulate the active material environment inside the battery; the sealed container is filled with environmental gas to simulate the external environment after the arc occurs. The processor is configured to, when the sealed container is filled with ambient gas, adjust the voltage of the voltage regulator in the test circuit to a preset voltage value and dynamically adjust the value of the electronic load to generate different test signals, and acquire the arc signals generated by the positive and negative electrode plates under the different test signals; the ambient gas includes any one of air, nitrogen, carbon dioxide, and inert gas; the preset voltage value is not lower than the critical voltage value of the arc signals generated by the positive and negative electrode plates.

2. The apparatus according to claim 1, characterized in that, The arc testing device further includes: a signal acquisition device; the signal acquisition device is connected to the processor and the testing circuit respectively; the signal acquisition device is disposed outside the sealed container; The signal acquisition device is used to acquire the arc signals generated by the positive electrode and the negative electrode under different test signals; Correspondingly, the processor is used to control the test circuit to generate different test signals and acquire the arc signal from the signal acquisition device when the sealed container is filled with ambient gas.

3. The apparatus according to claim 2, characterized in that, The signal acquisition device includes: an image acquisition device and an electrical signal acquisition device; the image acquisition device is connected to the processor, and the electrical signal acquisition device is connected to both the processor and the test circuit. The image acquisition device is used to acquire an image of the electric arc that generates the electric arc signal from the positive electrode and the negative electrode. The signal acquisition device is used to acquire the arc signal generated by the positive electrode and the negative electrode.

4. The apparatus according to claim 3, characterized in that, The electrical signal acquisition device includes a voltage acquisition device and a current acquisition device; the voltage acquisition device is connected in parallel with the test circuit, the current acquisition device is connected in series with the test circuit, and the voltage acquisition device and the current acquisition device are also connected to the processor.

5. The apparatus according to claim 4, characterized in that, The image acquisition device includes a high-speed image acquisition device, and the voltage acquisition device and the current acquisition device include high-speed data acquisition devices.

6. A method for testing the electric arc of a battery, characterized in that, The method is applied to the processor according to any one of claims 1 to 5, the method comprising: In a sealed container filled with ambient gas, the control test circuit generates different test signals. Acquire the arc signals generated by the positive and negative electrode plates under different test signals; The arc signal is processed and analyzed to obtain the processing result.

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