Integrated energy storage battery thermal runaway detection device and method

Abstract

The invention relates to the technical field of battery thermal runaway detection devices, and particularly discloses an integrated energy storage battery thermal runaway detection device and method.The integrated energy storage battery thermal runaway detection device comprises a detection box, a control electric box is arranged on one side of the detection box, a gas treatment assembly is arranged on the other side of the detection box, and a moving assembly and a heating assembly are arranged in the detection box; the moving assembly mainly comprises a moving plate, a pressure sensor is arranged below the moving plate, a gas sensor is arranged below the pressure sensor, a resistance heating wire is arranged in a heating plate, a detection battery is arranged in a baffle, one end of an air suction port of the gas treatment assembly is connected with an air pump, and an exhaust port is formed in one end of the air pump. One end of the exhaust port is connected with a treatment box, a first filter plate and a second filter plate are arranged in the treatment box, the integrated energy storage battery thermal runaway detection device is simple in structure and convenient to use and maintain, and the detection efficiency of battery thermal runaway can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery thermal runaway detection devices, and in particular to an integrated energy storage battery thermal runaway detection device and method. Background Art

[0002] Thermal runaway of energy storage batteries refers to the increase in internal temperature of the battery, which accelerates chemical reactions and causes self-heating. This phenomenon is usually caused by overcharging, short circuit, external short circuit, internal decomposition reaction, etc. Once thermal runaway occurs, the battery may explode, burn, and other dangers, so it is very important to detect signs of thermal runaway in a timely manner.

[0003] Design considerations for energy storage battery thermal runaway detection devices: 1. Rapid response capability: Thermal runaway may occur in a very short period of time, so the detection system needs to have a high response speed and be able to immediately issue an early warning when an abnormality occurs in the battery and take timely measures. 2. Environmental adaptability: Energy storage batteries are often used in different environmental conditions, such as automobiles, portable devices, etc. Therefore, the detection device needs to have strong environmental adaptability and be able to work stably under high temperature, low temperature, humidity changes and other conditions. 3. Safety: Once thermal runaway of energy storage batteries occurs, it may pose a threat to the surrounding environment, so the safety of the detection device is very critical.

[0004] In addition, once the energy storage battery has thermal runaway, it may not only cause the battery to catch fire, but also release harmful gases and even cause explosion hazards. These harmful gases usually include toxic chemicals such as hydrogen, organic volatiles, hydrogen fluoride (HF), and carbon dioxide. In order to effectively deal with and reduce the hazards of these harmful gases, the following methods can be adopted: 1. Chemical adsorption method: by using special chemical adsorption materials (such as activated carbon, alumina, etc.) to adsorb and remove harmful gases, these materials can capture the toxic components in the gas when it passes through, reducing its harm; 2. High-temperature incineration method: For the case of strong acidic gases such as hydrogen fluoride (HF), high-temperature incineration technology can be used to completely decompose it into harmless substances. The design of the incinerator needs to be able to withstand extremely high temperatures and have sufficient purification capacity for harmful gases.

[0005] Existing detection devices for battery thermal runaway fail to take into account the treatment of harmful gases released by battery thermal runaway, thereby causing problems such as affecting human health and polluting the environment. Summary of the invention

[0006] 1. Technical issues to be resolved The problem to be solved by the present invention is to provide an integrated energy storage battery thermal runaway detection device and method to overcome the defects in the prior art.

[0007] (II) Technical solution In order to solve the technical problem, the present invention provides an integrated energy storage battery thermal runaway detection device, comprising a detection box, a control electric box is arranged on one side of the detection box, a gas processing component is arranged on the other side of the detection box, and a moving component and a heating component are arranged inside the detection box respectively; The moving assembly mainly comprises a fixed plate located at the bottom of the detection box, a first support plate and a second support plate are respectively arranged on both sides of the fixed plate, a first screw is arranged inside the first support plate, a first slider is arranged on the first screw, a first motor is connected to one end of the first screw, a second screw is arranged inside the second support plate, a second slider is arranged on the second screw, a second motor is arranged at one end of the second screw, a moving plate is arranged between the first slider and the second slider, a pressure sensor is arranged below the moving plate, a limit plate is arranged below the pressure sensor, and gas sensors are arranged on both sides of the limit plate; The heating assembly includes a heating plate located on the fixed plate, a resistance heating wire is arranged inside the heating plate, a baffle perpendicular to the fixed plate is arranged on the heating plate, a detection battery is arranged inside the baffle, and an isolation plate perpendicular to the baffle is arranged on the detection battery.

[0008] Furthermore, the gas processing component mainly includes an air intake port connected to the detection box, one end of the air intake port is connected to an air pump, one end of the air pump is provided with an exhaust port, one end of the exhaust port is connected to a processing box, and a first filter plate and a second filter plate are respectively provided inside the processing box.

[0009] Furthermore, the first support plate and the second support plate are symmetrically arranged relative to the fixed plate, and the first sliding block and the second sliding block are symmetrically arranged relative to the fixed plate.

[0010] Furthermore, the horizontal cross section of the movable plate is parallel to the horizontal cross section of the limiting plate, and the horizontal cross section of the limiting plate is parallel to the horizontal cross section of the isolation plate.

[0011] Furthermore, a connecting hinge is provided on one side of the first sliding block, and the connecting hinge is located between the first sliding block and the movable plate.

[0012] Furthermore, the connecting hinges are provided in plurality, and the connecting hinges are symmetrically arranged relative to the movable plate.

[0013] Furthermore, a plurality of gas sensors are provided below the limiting plate, and the plurality of gas sensors are symmetrical with respect to the isolation plate.

[0014] Furthermore, a vertical cross section of the first filter plate is parallel to a vertical cross section of the second filter plate.

[0015] Furthermore, the axis of the air intake port is parallel to the axis of the air exhaust port, and the straight line of the first lead screw is parallel to the axis of the second lead screw.

[0016] A method for an integrated energy storage battery thermal runaway detection device comprises the following steps: S1. Turn on the control box. The resistance heating wire inside the heating plate starts to generate heat after being powered on. As the temperature rises, the temperature of the battery also rises. A temperature sensor is provided between the heating plate and the detection battery to record the temperature change of the detection battery when thermal runaway occurs. Since the battery will expand and deform during thermal runaway, the pressure of the detection battery will change. The first motor and the second motor on the detection box are started. The first motor and the second motor rotate to drive the first lead screw and the second lead screw to move, thereby respectively moving the first slider and the second slider installed on the first lead screw and the second lead screw up and down. The first slider and the second slider move downward, driving the movable plate and the limit plate below to move downward accordingly. When the limit plate moves to the isolation plate below, it stops moving. At this time, the pressure value of the pressure sensor is recorded as F 1 ; S2. As the temperature of the heating plate increases, the temperature of the test battery also increases. As the test battery expands with the temperature increase, the test battery produces pressure changes due to volume expansion. The pressure value of the pressure sensor at this time is recorded as F 2 ; S3, if the pressure F generated by the battery on the isolation plate is detected at this time 2 If the threshold is exceeded, thermal runaway will occur and the detection battery will release harmful gases such as hydrogen fluoride, carbon monoxide and methane. At this time, the gas sensor installed above the isolation plate will detect the released harmful gases and send out an alarm signal; S4. Start the air pump. The air pump installed on one side of the detection box begins to process the harmful gases released by the thermal runaway of the battery. Under the operation of the air pump, the harmful gases enter from the air intake port at one end of the air pump and are discharged into the processing box connected to it from the exhaust port on the other side of the air pump. Since the first filter plate and the second filter plate are arranged inside the processing box, the first filter plate is provided with adsorption materials such as aluminum oxide and molybdenum dioxide, and the second filter plate is provided with metal catalysts such as platinum and manganese, the harmful gases are absorbed by the adsorbent on the first filter plate when passing through the first filter plate, and the remaining harmful gases are catalytically treated and converted into carbon dioxide and water such as carbon monoxide, hydrogen oxide and methane when passing through the second filter plate, thereby purifying the harmful gases and preventing the discharge of harmful gases from polluting the environment.

[0017] (III) Beneficial effects Compared with the prior art, the integrated energy storage battery thermal runaway detection device and method provided by the present invention has the following beneficial effects: 1. The present invention discloses an integrated energy storage battery thermal runaway detection device and method. A control electrical box is provided on one side of the detection box, a gas processing assembly is provided on the other side of the detection box, a moving assembly and a heating assembly are provided inside the detection box, respectively. The heating assembly designed for the detection device mainly includes a heating plate located on a fixed plate, a resistance heating wire is provided inside the heating plate, a baffle is provided in a direction perpendicular to the heating plate, and a detection battery is placed between the baffle and the isolation plate. The overall structure of the integrated energy storage battery thermal runaway detection device is simple, and is convenient for operators to install and use.

[0018] 2. The present invention discloses an integrated energy storage battery thermal runaway detection device and method. The designed gas processing component mainly includes an air intake connected to a detection box, an air pump is connected to one end of the air intake, an exhaust port is arranged at one end of the air pump, and a processing box is connected to one end of the exhaust port. A first filter plate and a second filter plate are arranged inside the processing box, respectively. The air pump is started to process the harmful gas released by the thermal runaway of the battery. Under the operation of the air pump, the harmful gas enters from the air intake at one end of the air pump and is discharged into the processing box connected thereto from the exhaust port on the other side of the air pump. Since the first filter plate and the second filter plate are arranged inside the processing box, the first filter plate is provided with adsorption materials such as aluminum oxide and molybdenum dioxide, and the second filter plate is provided with metal catalysts such as platinum and manganese, when the harmful gas passes through the first filter plate, it is absorbed by the adsorbent on the first filter plate. When the remaining harmful gas passes through the second filter plate, the harmful gas such as carbon monoxide, hydrogen oxide, and methane is catalytically treated and converted into carbon dioxide and water, thereby purifying the harmful gas and preventing the discharge of the harmful gas from polluting the environment.

[0019] 3. The present invention provides an integrated energy storage battery thermal runaway detection device and method. The heating component is designed so that as the temperature of the heating plate increases, the temperature of the detection battery also increases continuously. As the detection battery continues to expand with the temperature increase, the detection battery produces pressure changes due to the volume expansion. If the pressure generated by the detection battery on the isolation plate exceeds its threshold, thermal runaway occurs. The gas sensor installed above the isolation plate will monitor the harmful gas released by the thermal runaway of the detection battery and send out an alarm signal, thereby reminding the staff that the battery has thermal runaway and needs to be subsequently processed, so as to facilitate the replacement and maintenance of the integrated energy storage battery.

[0020] 4. The present invention discloses an integrated energy storage battery thermal runaway detection device and method. The moving component of the detection device drives the first lead screw and the second lead screw to move under the rotation of the first motor and the second motor, thereby causing the first slider and the second slider installed on the first lead screw and the second lead screw to move up and down at the same time, and the downward movement of the first slider and the second slider drives the moving plate and the limiting plate below to move downward accordingly, thereby pressing the battery to be detected and preventing it from loosening, thereby ensuring the accuracy of the measurement result. In addition, by adjusting the position of the moving plate, batteries of different models and sizes can be detected, thereby improving the detection efficiency of thermal runaway of the integrated energy storage battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a first stereoscopic diagram of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 2 A second stereoscopic diagram of an integrated energy storage battery thermal runaway detection device according to the present invention; Figure 3 It is a third stereoscopic diagram of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 4 It is a first stereoscopic view of a moving component of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 5 A second stereoscopic view of a moving component of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 6 This is a structural diagram of a mobile component of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 7 This is a structural diagram of a heating component of an integrated energy storage battery thermal runaway detection device of the present invention; Figure 8 It is a first stereoscopic view of a gas processing assembly of an integrated energy storage battery thermal runaway detection device of the present invention; Fig. 9 A second stereoscopic view of a gas processing assembly of an integrated energy storage battery thermal runaway detection device of the present invention; Fig.10 This is a structural diagram of a filter plate of an integrated energy storage battery thermal runaway detection device of the present invention.

[0023] 1. The names of the components corresponding to the various reference numerals in the figure are: 1. detection box; 2. moving assembly; 201. first support plate; 202. first lead screw; 203. first slider; 204. first motor; 205. second motor; 206. second support plate; 207. second slider; 208. moving plate; 209. fixed plate; 210. limit plate; 211. pressure sensor; 212. gas sensor; 213. connecting hinge; 214. second lead screw; 3. heating assembly; 301. heating plate; 302. resistance heating wire; 303. baffle; 304. isolation plate; 305. detection battery; 4. control electric box; 5. gas processing assembly; 501. processing box; 502. second filter plate; 503. first filter plate; 504. air pump; 505. air inlet; 506. exhaust port. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0029] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0030] See also Figures 1 to 10 The present invention provides an integrated energy storage battery thermal runaway detection device, comprising a detection box 1, a control electric box 4 is arranged on one side of the detection box 1, a gas processing component 5 is arranged on the other side of the detection box 1, and a moving component 2 and a heating component 3 are arranged inside the detection box 1; The moving assembly 2 mainly includes a fixed plate 209 located at the bottom of the detection box 1, a first support plate 201 and a second support plate 206 are respectively arranged on both sides of the fixed plate 209, a first screw 202 is arranged inside the first support plate 201, a first slider 203 is arranged on the first screw 202, one end of the first screw 202 is connected to a first motor 204, a second screw 214 is arranged inside the second support plate 206, a second slider 207 is arranged on the second screw 214, a second motor 205 is arranged at one end of the second screw 214, a moving plate 208 is arranged between the first slider 203 and the second slider 207, a pressure sensor 211 is arranged below the moving plate 208, a limit plate 210 is arranged below the pressure sensor 211, and gas sensors 212 are arranged on both sides of the limit plate 210; The heating assembly 3 includes a heating plate 301 located on the fixed plate 209, a resistance heating wire 302 is arranged in the heating plate 301, a baffle 303 perpendicular to the fixed plate 209 is arranged on the heating plate 301, a detection battery 305 is arranged inside the baffle 303, and an isolation plate 304 perpendicular to the baffle 303 is arranged on the detection battery 305. The gas processing assembly 5 mainly includes an air intake port 505 connected to the detection box 1, one end of the air intake port 505 is connected to an air pump 504, one end of the air pump 504 is provided with an exhaust port 506, one end of the exhaust port 506 is connected to the processing box 501, and a first filter plate 503 and a second filter plate 502 are respectively arranged inside the processing box 501, the vertical section of the first filter plate 503 is parallel to the vertical section of the second filter plate 502, the axis of the air intake port 505 is parallel to the axis of the exhaust port 506, and the straight line of the first lead screw 202 is parallel to the axis of the second lead screw 214.

[0031] See also Figures 1 to 6 The first support plate 201 and the second support plate 206 are symmetrically arranged relative to the fixed plate 209, the first slider 203 and the second slider 207 are symmetrically arranged relative to the fixed plate 209, a connecting hinge 213 is provided on one side of the first slider 203, the connecting hinge 213 is located between the first slider 203 and the movable plate 208, and a plurality of connecting hinges 213 are provided, and the plurality of connecting hinges 213 are symmetrically arranged relative to the movable plate 208.

[0032] See also Figures 1 to 7 The horizontal cross-section of the movable plate 208 is parallel to the horizontal cross-section of the limiting plate 210 , and the horizontal cross-section of the limiting plate 210 is parallel to the horizontal cross-section of the isolation plate 304 . A plurality of gas sensors 212 are arranged under the limiting plate 210 , and the plurality of gas sensors 212 are symmetrical relative to the isolation plate 304 .

[0033] A method for an integrated energy storage battery thermal runaway detection device comprises the following steps: S1. Turn on the control box 4. The resistance heating wire 302 inside the heating plate 301 starts to generate heat after being powered on. As the temperature rises, the temperature of the battery also rises. A temperature sensor is provided between the heating plate 301 and the detection battery 305 to record the temperature change of the detection battery 305 when thermal runaway occurs. Since the battery will expand and deform during thermal runaway, the pressure of the detection battery 305 will change. The first motor 204 and the second motor 205 on the detection box 1 are started. The first motor 204 and the second motor 205 rotate to drive the first lead screw 202 and the second lead screw 214 to move, thereby respectively moving the first slider 203 and the second slider 207 installed on the first lead screw 202 and the second lead screw 214 up and down, and the first slider 203 and the second slider 207 move downward, driving the movable plate 208 and the lower limit plate 210 to move downward accordingly. When the limit plate 210 moves to the isolation plate 304 below, it stops moving. At this time, the pressure value of the pressure sensor 211 is recorded as F 1 ; S2. As the temperature of the heating plate 301 increases, the temperature of the detection battery 305 also increases. As the detection battery 305 expands with the temperature increase, the detection battery 305 produces a pressure change due to the volume expansion. The pressure value of the pressure sensor 211 at this time is recorded as F 2 ; S3, if the pressure F generated by the battery 305 on the isolation plate 304 is detected at this time 2 If the threshold is exceeded, thermal runaway occurs, and the detection battery 305 releases harmful gases such as hydrogen fluoride, carbon monoxide, and methane. At this time, the gas sensor 212 installed above the isolation plate 304 detects the released harmful gases and sends out an alarm signal; S4. Start the air pump 504. The air pump 504 installed on one side of the detection box 1 begins to process the harmful gases released by the thermal runaway of the battery. Under the operation of the air pump 504, the harmful gases enter from the air inlet 505 at one end of the air pump 504, and are discharged into the processing box 501 connected thereto from the exhaust port 506 on the other side of the air pump 504. Since the processing box 501 is provided with a first filter plate 503 and a second filter plate 502, the first filter plate 503 is provided with adsorption materials such as aluminum oxide and molybdenum dioxide, and the second filter plate 502 is provided with metal catalysts such as platinum and manganese, when the harmful gases pass through the first filter plate 503, they are absorbed by the adsorbent on the first filter plate 503. When the remaining harmful gases pass through the second filter plate 502, the harmful gases such as carbon monoxide, hydrogen oxide and methane are catalytically treated and converted into carbon dioxide and water, thereby purifying the harmful gases and preventing the discharge of harmful gases from polluting the environment.

[0034] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An integrated energy storage battery thermal runaway detection device, characterized in that: It comprises a detection box (1), a control electric box (4) is arranged on one side of the detection box (1), a gas processing component (5) is arranged on the other side of the detection box (1), and a moving component (2) and a heating component (3) are arranged inside the detection box (1); The moving assembly (2) mainly comprises a fixed plate (209) located at the bottom of the detection box (1); a first support plate (201) and a second support plate (206) are respectively arranged on both sides of the fixed plate (209); a first lead screw (202) is arranged inside the first support plate (201); a first slider (203) is arranged on the first lead screw (202); one end of the first lead screw (202) is connected to a first motor (204); and a second lead screw (203) is arranged inside the second support plate (206). (214), a second slider (207) is arranged on the second lead screw (214), a second motor (205) is arranged at one end of the second lead screw (214), a moving plate (208) is arranged between the first slider (203) and the second slider (207), a pressure sensor (211) is arranged below the moving plate (208), a limit plate (210) is arranged below the pressure sensor (211), and gas sensors (212) are arranged on both sides of the limit plate (210); The heating assembly (3) comprises a heating plate (301) located on the fixing plate (209), a resistance heating wire (302) being arranged inside the heating plate (301), a baffle (303) being arranged on the heating plate (301) and being perpendicular to the fixing plate (209), a detection battery (305) being arranged inside the baffle (303), and an isolation plate (304) being arranged on the detection battery (305) and being perpendicular to the baffle (303).

2. The integrated energy storage battery thermal runaway detection device according to claim 1, characterized in that: The gas processing assembly (5) mainly comprises an air intake port (505) connected to the detection box (1); one end of the air intake port (505) is connected to an air pump (504); one end of the air pump (504) is provided with an air exhaust port (506); one end of the air exhaust port (506) is connected to a processing box (501); and a first filter plate (503) and a second filter plate (502) are respectively provided inside the processing box (501).

3. The integrated energy storage battery thermal runaway detection device according to claim 1, characterized in that: The first support plate (201) and the second support plate (206) are symmetrically arranged relative to the fixed plate (209), and the first sliding block (203) and the second sliding block (207) are symmetrically arranged relative to the fixed plate (209).

4. The integrated energy storage battery thermal runaway detection device according to claim 1, characterized in that: The horizontal cross section of the movable plate (208) is parallel to the horizontal cross section of the limiting plate (210), and the horizontal cross section of the limiting plate (210) is parallel to the horizontal cross section of the isolation plate (304).

5. The integrated energy storage battery thermal runaway detection device according to claim 1, characterized in that: A connecting hinge (213) is provided on one side of the first sliding block (203), and the connecting hinge (213) is located between the first sliding block (203) and the moving plate (208).

6. The integrated energy storage battery thermal runaway detection device according to claim 5, characterized in that: A plurality of the connecting hinges (213) are provided, and the plurality of connecting hinges (213) are symmetrically arranged relative to the moving plate (208).

7. The integrated energy storage battery thermal runaway detection device according to claim 1, characterized in that: A plurality of gas sensors (212) are provided below the limiting plate (210), and the plurality of gas sensors (212) are symmetrical with respect to the isolation plate (304).

8. The integrated energy storage battery thermal runaway detection device according to claim 2, characterized in that: The vertical cross section of the first filter plate (503) is parallel to the vertical cross section of the second filter plate (502).

9. The integrated energy storage battery thermal runaway detection device according to claim 2, characterized in that: The axis of the air intake port (505) is parallel to the axis of the air exhaust port (506), and the straight line of the first lead screw (202) is parallel to the axis of the second lead screw (214).

10. A method for an integrated energy storage battery thermal runaway detection device, applied to an integrated energy storage battery thermal runaway detection device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. Turn on the control electric box (4). The resistance heating wire (302) inside the heating plate (301) starts to generate heat after being powered on. As the temperature rises, the temperature of the battery also rises. A temperature sensor is provided between the heating plate (301) and the detection battery (305) to record the temperature change of the detection battery (305) when thermal runaway occurs. Since the battery will expand and deform when thermal runaway occurs, the pressure of the detection battery (305) will change. The first motor (204) and the second motor (205) on the detection box (1) are started. The first motor (204) and the second motor (205) are connected to the detection box (1). The machine (205) rotates to drive the first lead screw (202) and the second lead screw (214) to move, thereby causing the first slider (203) and the second slider (207) mounted on the first lead screw (202) and the second lead screw (214) to move up and down respectively. The first slider (203) and the second slider (207) move downward, driving the movable plate (208) and the limit plate (210) below to move downward accordingly. When the limit plate (210) moves to press the isolation plate (304) below, it stops moving. At this time, the pressure value F1 of the pressure sensor (211) is recorded; S2, as the temperature of the heating plate (301) increases, the temperature of the detection battery (305) also increases continuously, and as the detection battery (305) expands continuously with the temperature increase, at this time, the detection battery (305) produces a pressure change due to the volume expansion, and the pressure value of the pressure sensor (211) at this time is recorded as F2; S3. If the pressure F2 generated by the detection battery (305) on the isolation plate (304) exceeds its threshold value, thermal runaway occurs, and the detection battery (305) releases harmful gases such as hydrogen fluoride, carbon monoxide, methane, and carbonate gases. At this time, the gas sensor (212) installed above the isolation plate (304) detects the released harmful gases and issues an alarm signal; S4, start the air pump (504), and the air pump (504) installed on one side of the detection box (1) starts to process the harmful gas released by the thermal runaway of the battery. Under the operation of the air pump (504), the harmful gas enters from the air intake port (505) at one end of the air pump (504), and is discharged into the processing box (501) connected to it from the exhaust port (506) on the other side of the air pump (504). Since the first filter plate (503) and the second filter plate (502) are arranged inside the processing box (501), the first filter plate (503) and the second filter plate (502) are used to filter the harmful gas. Adsorbent materials such as aluminum oxide and molybdenum dioxide are arranged on the filter plate (503), and metal catalysts such as platinum and manganese are arranged on the second filter plate (502). When harmful gases pass through the first filter plate (503), they are absorbed by the adsorbent on the first filter plate (503). When the remaining harmful gases pass through the second filter plate (502), the harmful gases such as carbon monoxide, hydrogen oxide, and methane are catalytically treated and converted into carbon dioxide and water, thereby purifying the harmful gases and preventing the harmful gases from being discharged and polluting the environment.

Images