Lithium ion battery thermal runaway testing device

Abstract

The utility model discloses a lithium ion battery thermal runaway testing arrangement for detecting and / or processing sulfide and / or halide in battery thermal runaway gas, including the battery thermal runaway gas production collection jar of closed structure, there is thermal runaway test bench in the battery thermal runaway gas production collection jar, the top of battery thermal runaway gas production collection jar has alkaline solution spraying device, first gas pipe, second gas pipe, the gas outlet of first gas pipe is connected with the gas inlet of first filter device that has filter solution in, the gas outlet of second gas pipe is connected with the gas inlet of tail gas treatment device that has tail gas treatment solution in, and the gas outlet of first filter device is connected with the gas inlet of second filter device that has filter material in. The utility model can realize to battery thermal runaway gas collection processing, detect sulfide and halide in battery thermal runaway gas production, and carry out non - toxic processing and discharge or carry out the detection of other components in the battery thermal runaway gas production.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical battery safety testing technology, and in particular to a lithium-ion battery thermal runaway testing device. Background Technology

[0002] Existing lithium-ion battery thermal runaway-gas generation tests are generally conducted in a sealed container. During and after the thermal runaway-gas generation test of sulfide, halide semi-solid, and solid lithium-ion batteries, harmful gases containing sulfides and halides are released, posing a threat to the environment and human health. If inhaled, these gases may cause irreversible damage to the human body.

[0003] Currently, safety testing of sulfide, halide semi-solid, and solid-state lithium-ion batteries may lead to battery leakage, thermal runaway, and other issues, all of which generate sulfide and halide gases. Therefore, it is crucial to better manage the gas generation caused by thermal runaway in order to avoid harm to people and the surrounding environment. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and defects of the prior art and provide a lithium-ion battery thermal runaway testing device suitable for detecting and neutralizing sulfur halide gases.

[0005] This utility model is achieved through the following technical solution:

[0006] A lithium-ion battery thermal runaway testing device is disclosed for detecting and / or treating sulfides and / or halides in battery thermal runaway gases. The device includes a closed-structure battery thermal runaway gas collection tank containing a thermal runaway testing platform. The top of the collection tank has an alkaline solution spraying device, a first gas pipe, and a second gas pipe. The outlet of the first gas pipe is connected to the inlet of a first filter containing a filter solution. The outlet of the second gas pipe is connected to the inlet of a tail gas treatment device containing a tail gas treatment solution. The exhaust port of the first filter is connected to the inlet of a second filter containing filter material.

[0007] The exhaust gas treatment device is equipped with an exhaust port for discharging the treated gas.

[0008] The second filter device is provided with an exhaust port for the filtered gas.

[0009] The exhaust port of the first filter device is connected to the air inlet of the second filter device via an air pipe.

[0010] The first gas tube is equipped with a sulfide and / or halide gas detector.

[0011] The filter solution, which is composed of an alkaline solution, is placed in a container to form the first filter device.

[0012] The filter material, composed of soda lime, is placed in a container to form the second filter device.

[0013] The tail gas treatment solution, which is composed of an alkaline solution, is placed in a container to form the tail gas treatment device.

[0014] The alkaline solution spraying device is connected via a pipeline to an alkaline solution storage tank located outside the battery thermal runaway gas collection tank.

[0015] The thermal runaway test bench is a grid plate.

[0016] The lithium-ion battery thermal runaway testing device of this invention can collect and process the thermal runaway gas generated by the battery after conducting the thermal runaway test in a closed battery thermal runaway gas collection tank, detect sulfides and halides in the thermal runaway gas, and discharge it after non-toxic treatment or detect other components in the thermal runaway gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the lithium-ion battery thermal runaway testing device of this utility model. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] This utility model's lithium-ion battery thermal runaway testing device adds a spray device to treat residual gas inside the tank, neutralizing sulfide and / or halide gases that may be generated during safety experiments. It also adds sulfide and / or halide gas detection and end-of-pipe neutralization and regeneration on the discharge pipeline, as well as tail gas treatment to neutralize and remove sulfide and / or halide gases, thereby achieving efficient treatment of harmful gases.

[0020] See Figure 1As shown in the exemplary embodiment of this application, a lithium-ion battery thermal runaway testing device is provided for detecting and / or treating sulfides and / or halides in battery thermal runaway gas. It includes a closed-structure battery thermal runaway gas collection tank 1, a thermal runaway test bench 2 inside the tank, and an alkaline solution spraying device 4 (e.g., a nozzle), a first gas pipe 16, and a second gas pipe 17 at the top of the tank. The outlet of the first gas pipe is connected to the inlet of a first filter device 10 containing a filter solution, the outlet of the second gas pipe is connected to the inlet of a tail gas treatment device 8 containing a tail gas treatment solution, and the exhaust port of the first filter device is connected to the inlet of a second filter device 12 containing filter material.

[0021] In an exemplary embodiment of this application, the lithium-ion battery thermal runaway testing device includes a closed-structure battery thermal runaway gas collection tank containing a thermal runaway test bench. This allows for battery thermal runaway testing within the collection tank. During and after the safety test of thermal runaway-gas generation in sulfide, halide semi-solid, and solid lithium-ion batteries, harmful gases containing sulfides and halides are collected to prevent untreated emissions or escape that could harm the environment and personnel. By connecting a filter, exhaust gas treatment device, and spray device to the closed-structure battery thermal runaway gas collection tank, the thermal runaway gas can be treated, including the collection, detection, neutralization, and harmless treatment of the generated gases containing sulfides and / or halides.

[0022] In some embodiments, one-way sealing valves 15 are arranged on the first air pipe 16 and the second air pipe 17 to realize the one-way flow of the fluid transported inside, such as only discharging from inside the tank to the outside, and preventing external fluid from entering the tank.

[0023] As one embodiment, the exhaust gas treatment device can effectively remove toxic and harmful gases such as sulfides and / or halides from the produced gas. The exhaust gas treatment device 8 is provided with an exhaust port for discharging the treated gas. Through the exhaust gas treatment device, the produced gas can be rendered harmless and non-toxic, and finally discharged from its exhaust port. It can be discharged into a corresponding gas treatment system for further treatment before being discharged into the atmosphere or used for other purposes. The gas treatment system may include, for example, a filter or a cyclone separator to remove large particles and dust from the exhaust gas, thereby reducing the burden on subsequent treatment equipment; or it may be used in conjunction with technologies such as activated carbon adsorption, UV photolysis purification, and catalytic combustion to treat the organic matter in the exhaust gas before discharge. The specific method is not limited, and this is not an innovation of this application, so it will not be elaborated further.

[0024] The exhaust port of the exhaust gas treatment device 8 is arranged on the sealing cover or sealing device of the container of the exhaust gas treatment device, and the exhaust gas treatment device is a closed structure except for the inlet and outlet.

[0025] As an example, the exhaust port of the exhaust gas treatment device is connected to a gas pipe. The gas pipe can be connected to a flow meter 9 to detect the flow rate of the exhaust gas, or it can be connected to a gas analyzer for qualitative and / or quantitative analysis of the gas. After that, the gas flows into the corresponding gas treatment system for further treatment before being discharged or used for other purposes.

[0026] The tail gas treatment device 8 consists of an alkaline solution contained in a container. The alkaline solution includes, but is not limited to, calcium hydroxide to neutralize sulfur and halides. The top opening of the container is sealed with a cap or sealing device to prevent gas from escaping. The first filter device is a closed structure except for its inlet and outlet ports.

[0027] As one embodiment, the second filter device 12 is provided with an exhaust port for the filtered gas. The exhaust port of the second filter device can be connected to an exhaust pipe body. The exhaust port is arranged on the sealing cap or sealing device of the container of the second filter device. The filter material, which is composed of soda lime, is placed in a container to form the second filter device. The second filter device is a closed structure except for the inlet and outlet.

[0028] In specific applications, the exhaust pipe connected to the exhaust port of the second filter device 12 can be connected to other gas detection sensor devices 13 to detect other components (such as H2, CO, VOC, etc.) in the gas produced after neutralizing sulfides and / or halides. Of course, it is also possible not to set them up, depending on the situation. The gas detection sensor device 13 can include multiple sensors, such as sensors for detecting sulfur dioxide, hydrogen sulfide, hydrogen cyanide, hydrogen fluoride, and hydrogen chloride. These are existing technology products, and the selection should be based on the detection needs. Alternatively, it can be connected to a gas analysis instrument for qualitative and / or quantitative analysis of the gas.

[0029] As one embodiment, the exhaust port of the first filter device 10 is connected to the inlet of the second filter device 12 via a gas pipe 11. A one-way sealing valve on the gas pipe 11 allows for unidirectional fluid flow. The first gas pipe has a sulfide and / or halide gas detector 14 for detecting sulfide and / or halide gases generated during thermal runaway, satisfying the detection requirements of 0-1000 ppm sulfide and / or halide gas composition and concentration. The sulfide and / or halide gas detector 14 is a gas sensor directly embedded in the pipeline, ensuring that the detection probe can contact the gas within the pipeline in real time; this is a prior art product.

[0030] As one embodiment, the filtration solution, composed of an alkaline solution, is contained in a container to form the first filtration device 10. The first filtration device is a closed structure except for the inlet and outlet. The filtration solution contains, but is not limited to, calcium hydroxide to neutralize sulfur and halides.

[0031] As one embodiment, the alkaline solution spraying device 4 (such as a nozzle) is connected via a pipeline to an alkaline solution storage tank 7 located outside the battery thermal runaway gas collection tank. Generally, at least two alkaline solution spraying devices 4 can be selected and arranged opposite each other, such as... Figure 1 As shown, the battery 3 can be sprayed in two different directions, or multiple directions can be set up. The specific arrangement is not limited. In this embodiment, the arrangement of the alkaline solution spraying device 4 (such as a nozzle) is only exemplary and is not limited thereto.

[0032] In some embodiments, the alkaline solution spraying device 4 is connected to a branch pipe 5, which is connected to a main pipe 6. The main pipe 6 is connected to an alkaline solution storage tank 7 for liquid flow. The alkaline solution storage tank provides alkaline solution (including but not limited to calcium hydroxide) for spraying, which satisfies the requirement of simultaneous gas extraction and alkaline solution spraying. This allows for sufficient contact and reaction with sulfide and / or halide gases, neutralizing residual toxic and harmful sulfur and halides in the tank, effectively neutralizing related gas components in the exhaust gas, and effectively removing residual sulfide and / or halide gases in the tank. This effectively neutralizes and removes sulfide and / or halide gases generated by battery leakage or runaway in the early stages or preliminary phases.

[0033] The branch pipe 5 is equipped with a one-way sealing valve 15, which is used only for the external spray liquid to enter, and prevents internal gas from entering the alkaline solution storage tank 7.

[0034] The thermal runaway test bench 2 is a grid plate used to place a thermal runaway test device or thermal runaway test component to perform thermal runaway testing on the battery. This is existing technology, such as the thermal runaway triggering component in patent CN2016102551328. Through the application of the grid plate, the sprayed liquid flowing from above can be collected below the grid plate and then discharged.

[0035] It should be noted that the battery thermal runaway gas collection tank described in this application is a prior art product.

[0036] The lithium-ion battery thermal runaway testing device of this invention can not only meet the needs of conventional battery testing and fire handling, but also treat toxic and harmful gases and batteries containing sulfur and halides.

[0037] This utility model's lithium-ion battery thermal runaway testing device incorporates a sulfide and / or halide gas absorption and drying system, effectively eliminating the hazards to human health and the environment encountered during conventional gas testing. Furthermore, the addition of sulfur and halide gas composition monitoring allows for effective oversight.

[0038] The lithium-ion battery thermal runaway testing device of this invention can collect and process the thermal runaway gas generated by the battery after conducting the thermal runaway test in a closed battery thermal runaway gas collection tank, detect sulfides and halides in the thermal runaway gas, and discharge it after non-toxic treatment or detect other components in the thermal runaway gas.

[0039] This utility model's lithium-ion battery thermal runaway testing device is a safety testing device. Targeting the unique problems of solid-state and sodium-ion battery systems, it fills the gap in the treatment and detection of sulfides and cyanides in safety tests for solid-state and sodium-ion batteries through innovative detection-neutralization-treatment technology. It provides significant protection for personnel safety and has high practical value for promoting the collaborative development of global solid-state battery safety research.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic features of this utility model.

[0041] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present invention is defined by the appended claims rather than the foregoing description. Thus, it is intended to encompass all variations falling within the meaning and scope of the equivalents of the claims within the present invention.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lithium-ion battery thermal runaway testing device for detecting and / or treating sulfides and / or halides in battery thermal runaway gases, comprising a closed-structure battery thermal runaway gas collection tank, wherein the battery thermal runaway gas collection tank contains a thermal runaway test bench, characterized in that, The top of the battery thermal runaway gas collection tank has an alkaline solution spraying device, a first gas pipe and a second gas pipe. The outlet of the first gas pipe is connected to the inlet of a first filter device containing a filter solution. The outlet of the second gas pipe is connected to the inlet of a tail gas treatment device containing a tail gas treatment solution. The exhaust port of the first filter device is connected to the inlet of a second filter device containing filter material.

2. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The exhaust gas treatment device is equipped with an exhaust port for discharging the treated gas.

3. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The second filter device is provided with an exhaust port for the filtered gas.

4. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The exhaust port of the first filter device is connected to the air inlet of the second filter device via an air pipe.

5. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The first trachea has a sulfide and / or halide gas detector.

6. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The filtration solution, consisting of an alkaline solution, is placed in a container to form the first filtration device.

7. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The filter material, composed of soda lime, is placed in a container to form the second filter device.

8. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The exhaust gas treatment solution, which is composed of an alkaline solution, is placed in a container to form the exhaust gas treatment device.

9. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The alkaline solution spraying device is connected via pipeline to an alkaline solution storage tank located outside the battery thermal runaway gas collection tank.

10. The lithium-ion battery thermal runaway testing device according to claim 1, characterized in that, The thermal runaway test bench is a grid plate.

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