A gas detection device

Abstract

This invention discloses a gas detection device, which includes a heating base, a sealed chamber, a mounting bracket, and a temperature sensor. The sealed chamber is disposed on the heating base and is used to accommodate a battery or battery component to be tested. The heating base is used to heat the sealed chamber and is provided with a temperature adjustment knob for adjusting a preset heating temperature and a preset heating temperature display screen. The preset heating temperature display screen is used to display the preset heating temperature. The temperature sensor is mounted on the heating base via the mounting bracket and includes a temperature probe and an actual heating temperature display screen. The temperature probe is used to detect the actual heating temperature inside the sealed chamber, and the actual heating temperature display screen is used to display the actual heating temperature. The actual heating temperature is used to verify the preset heating temperature.

Description

Technical Field

[0001] This invention relates to the field of battery simulation testing technology, and in particular to a gas detection device. Background Technology

[0002] With the vigorous development of new energy technologies, the development of new energy vehicles has been particularly rapid. As a key research focus in the safety design of new energy vehicles, battery safety has always been a major concern for users. In recent years, researchers have conducted extensive research on battery safety to improve its effectiveness. Researchers have used thermal analysis testing equipment to perform numerous thermal analysis tests on batteries or battery components. One important aspect is the analysis of the composition of gases generated by the battery or battery components under heating conditions, aiming to obtain parameters related to these parameters. However, in actual testing, the heating device may not reach the preset temperature when heating the battery or battery component under test. This makes it impossible for relevant personnel to accurately determine the correlation between temperature and the gas detection results. Therefore, accurately determining the heating temperature of the gas detection device during the testing process is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] This invention discloses a gas detection device to solve the problem in related technologies where gas detection devices cannot verify whether heating has been completed.

[0004] To address the aforementioned technical problems, the present invention discloses the following technical solutions:

[0005] A gas detection device includes a heating base, a sealed chamber, a mounting bracket, and a temperature sensor; wherein,

[0006] The sealed chamber is disposed on the heating base and is used to accommodate the battery or battery components to be tested. The heating base is used to heat the sealed chamber and is provided with a temperature adjustment knob for adjusting the preset heating temperature and a preset heating temperature display screen. The preset heating temperature display screen is used to display the preset heating temperature. The temperature sensor is mounted on the heating base via the mounting bracket. The temperature sensor includes a temperature probe and an actual heating temperature display screen. The temperature probe is used to detect the actual heating temperature inside the sealed chamber, and the actual heating temperature display screen is used to display the actual heating temperature. The actual heating temperature is used to verify the preset heating temperature.

[0007] Optionally, in the above-mentioned gas detection device, the heating base includes an electromagnetic heating base and an electromagnetic induction element. The electromagnetic induction element is disposed on the electromagnetic heating base, and the sealed chamber is disposed on the electromagnetic induction element. The electromagnetic induction element is electromagnetically coupled with the electromagnetic heating base to heat the sealed chamber. The temperature adjustment knob and the preset heating temperature display screen are both disposed on the electromagnetic heating base.

[0008] Optionally, in the above-mentioned gas detection device, the electromagnetic induction element is an electromagnetic induction cylinder, and the sealed chamber is detachably inserted into the electromagnetic induction cylinder, with the sealed chamber and the electromagnetic induction cylinder being positioned and fitted together.

[0009] Optionally, in the above-mentioned gas detection device, the temperature sensor is movably mounted on the mounting bracket so that the temperature probe can switch between a detection position and a non-detection position.

[0010] Optionally, in the above-mentioned gas detection device, the mounting bracket includes an intersecting first rod and a second rod. The first end of the first rod is fixed to the heating base, and the second end of the first rod extends away from the heating base. The first end of the second rod is fixed to the second end of the first rod. The first temperature sensor includes a sliding rod, which is slidably disposed at the second end of the second rod. The temperature probe is fixed to the bottom end of the sliding rod, and the actual heating temperature display screen is fixed to the top end of the sliding rod. The sliding rod can slide along the second rod to drive the temperature probe to switch between the detection position and the non-detection position.

[0011] Optionally, in the above-mentioned gas detection device, the mounting bracket further includes a guide cylinder fixed to the second end of the second rod, the sliding rod passes through the guide cylinder and slides in cooperation with the guide cylinder, and when the temperature probe is in the detection position, the actual heating temperature display screen makes limiting contact with the guide cylinder.

[0012] Optionally, in the above-mentioned gas detection device, the sealed chamber is provided with a receiving space, the sealed chamber is provided with a protrusion extending into the receiving space, the sealed chamber is provided with a clearance groove, the groove opening of the clearance groove is exposed on the outer surface of the sealed chamber, the bottom wall of the clearance groove extends to the free end of the protrusion, the bottom wall of the clearance groove is opposite to the groove opening of the clearance groove, and when the temperature probe is in the detection position, the temperature probe extends from the groove opening of the clearance groove to the bottom of the clearance groove.

[0013] Optionally, in the above-mentioned gas detection device, the sealed chamber includes a chamber body and a sealing cover. The sealing cover is detachably installed at the opening of the chamber body and forms the receiving space with the chamber body. The protrusion is provided on the inner surface of the sealing cover, and the clearance groove is formed on the integral of the sealing cover and the protrusion, and the groove opening of the clearance groove is exposed on the outer surface of the sealing cover.

[0014] Optionally, in the above-mentioned gas detection device, the sealing cover and the chamber body are detachably connected through a sealing thread engagement.

[0015] Optionally, in the above-mentioned gas detection device, the sealed chamber is provided with a receiving space, and the gas detection device further includes a carrier gas input pipe and a carrier gas output pipe. The carrier gas input pipe is connected to the receiving space and is used to input carrier gas into the receiving space. The carrier gas output pipe is connected to the receiving space and is used to output the carrier gas formed by heating the battery or battery component to be tested in the receiving space.

[0016] The gas detection device disclosed in the embodiments of the present invention has the following technical effects:

[0017] In the specific gas detection process, the operator places the battery or battery component to be tested into the sealed chamber and then sets the preset heating temperature by operating the temperature adjustment knob. Once set, the preset heating temperature is displayed on the display screen. After heating for a period of time, the temperature sensor detects the temperature inside the sealed chamber to obtain the actual heating temperature. Simultaneously, the actual heating temperature is detected by the temperature probe and displayed on the actual heating temperature display screen. The operator compares the actual heating temperature displayed on the display screen with the preset heating temperature. If they match, the gas detection device continues the detection process; otherwise, it stops to allow for subsequent maintenance or other intervention operations, ultimately verifying the actual heating temperature against the preset heating temperature. Attached Figure Description

[0018] Figure 1 and Figure 2 These are schematic diagrams of the gas detection device disclosed in the embodiments of the present invention from different perspectives;

[0019] Figure 3 and Figure 4 These are schematic diagrams of a portion of the gas detection device disclosed in the embodiments of the present invention from different perspectives.

[0020] Figure 5 This is a schematic diagram of a portion of the structure of the gas detection device disclosed in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of another part of the structure of the gas detection device disclosed in the embodiments of the present invention.

[0022] The components in the diagram are labeled as follows:

[0023] 10-Heating base, 11-Temperature adjustment knob, 12-Preset heating temperature display screen, 13-Electromagnetic induction element, 14-Electromagnetic heating base.

[0024] 20-Sealed chamber, 21-Accommodation space, 22-Protrusion, 23-Avoidance groove, 24-Cavity body, 25-Sealing cover

[0025] 30-Mounting bracket, 31-First rod, 32-Second rod, 33-Guide cylinder

[0026] 40 - Temperature sensor, 41 - Temperature probe, 42 - Actual heating temperature display screen, 43 - Sliding rod

[0027] 50 - Carrier gas inlet pipeline, 51 - First switch valve

[0028] 60 - Carrier gas output pipeline, 61 - Second switching valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] The technical solutions disclosed in the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Please refer to Figures 1-6 This invention discloses a gas detection device. The disclosed gas detection device is used to detect the composition of gases generated by a battery or battery component after it is heated. The gas detection device disclosed in this invention includes a heating base 10, a sealed chamber 20, a mounting bracket 30, and a temperature sensor 40.

[0032] The sealed chamber 20 is a component that houses the battery or battery component to be tested. The sealed chamber 20 includes a receiving space 21, which is a sealed space. During the testing process, the battery or battery component to be tested is placed in the receiving space 21 and heated. During heating, the battery or battery component releases gas into the receiving space 21. A gas detection device detects the gas released during heating to determine its composition. Because the receiving space 21 is a sealed space, the gas generated by the battery or battery component to be tested will not overflow into the environment surrounding the sealed chamber 20, thus avoiding adverse environmental impacts. It also prevents external gases from intruding and affecting the composition of the gas generated by the battery or battery component to be tested.

[0033] The heating base 10 is used to heat the sealed chamber 20. The sealed chamber 20 is disposed on the heating base 10, thereby enabling the heating base 10 to heat the sealed chamber 20. The heating base 10 can indirectly heat the battery under test or battery components placed within the receiving space 21.

[0034] In this embodiment of the invention, the heating base 10 is provided with a temperature adjustment knob 11 and a preset heating temperature display screen 12. The temperature adjustment knob 11 is used to adjust the preset heating temperature of the heating base 10 for the battery or battery component under test. The temperature adjustment knob 11 can be of various types. For example, it can change the preset heating temperature by rotating it to change the resistance value of the heating resistor of the heating base 10, or it can change the preset heating temperature by rotating it to change the heating current of the heating base 10. This embodiment of the invention does not limit the temperature adjustment mechanism and principle of the temperature adjustment knob 11, as this is prior art and not the inventive point of this invention, and therefore will not be described further here.

[0035] The preset heating temperature display screen 12 is used to display the preset heating temperature, so that the operator can intuitively obtain the preset heating temperature.

[0036] Temperature sensor 40 is a device used to detect the actual heating temperature of the battery or battery component being heated. Temperature sensor 40 is mounted on heating base 10 via mounting bracket 30. In this case, heating base 10 not only performs the heating function, but also provides a direct or indirect mounting base for mounting bracket 30 and temperature sensor 40.

[0037] The temperature sensor 40 can be a mercury thermometer or an infrared sensor; this embodiment of the invention does not limit the specific type of temperature sensor 40. In this embodiment, the temperature sensor 40 includes a temperature probe 41 and an actual heating temperature display screen 42. The temperature probe 41 is used to detect the actual heating temperature within the sealed chamber 20. The actual heating temperature display screen 42 is used to display the actual heating temperature.

[0038] In this embodiment of the invention, the actual heating temperature is used to verify the preset heating temperature.

[0039] In the specific gas detection process, the operator places the battery or battery component to be tested into the receiving space 21 of the sealed chamber 20, and then sets the preset heating temperature by operating the temperature adjustment knob 11. Once the preset heating temperature is set, it will be displayed on the preset heating temperature display screen 12. After heating for a period of time, the temperature sensor 40 will detect the temperature inside the sealed chamber 20 to obtain the actual heating temperature. At the same time, the actual heating temperature is detected by the temperature probe 41 and displayed on the actual heating temperature display screen 42. The operator compares the actual heating temperature displayed on the actual heating temperature display screen 42 with the preset heating temperature. If they match, the operator will continue the gas detection work; if they do not match, the operator will stop the gas detection work for subsequent maintenance or other intervention operations, ultimately achieving the verification of the actual heating temperature against the preset heating temperature.

[0040] In this embodiment of the invention, the heating base 10 can be of various types. For example, the heating base 10 can be a resistance heater or an electromagnetic heater. This embodiment of the invention does not limit the specific type of heating base 10. In an optional solution, the heating base 10 may include an electromagnetic heating base 14 and an electromagnetic induction element 13. The electromagnetic induction element 13 is disposed on the electromagnetic heating base 14, and the sealed chamber 20 is disposed on the electromagnetic induction element 13. The electromagnetic induction element 13 and the electromagnetic heating base 14 are electromagnetically coupled to heat the sealed chamber 20. The temperature adjustment knob 11 and the preset heating temperature display screen 12 are both disposed on the electromagnetic heating base 14. In the specific detection process, the temperature adjustment knob 11 can be rotated to adjust the current intensity on the electromagnetic heating base 14, thereby adjusting the magnetic field intensity of the electromagnetic heating base 14, so as to adjust the magnitude of the induced current in the electromagnetic induction process of the electromagnetic induction element 13, thereby achieving the purpose of adjusting the heat generation.

[0041] The electromagnetic induction element 13 can have various structures; optionally, it can be an electromagnetic induction cylinder. The sealed chamber 20 is detachably inserted into the electromagnetic induction cylinder, and the sealed chamber 20 and the electromagnetic induction cylinder are positioned and engaged. In this case, the electromagnetic induction cylinder not only heats the sealed chamber 20 but also positions it, thus making the placement of the sealed chamber 20 more stable.

[0042] In this embodiment of the invention, the temperature sensor 40 can be fixedly mounted on the mounting bracket 30 or movably mounted on the mounting bracket 30. Considering that in actual testing, after the operator removes the sealed chamber 20 from the heating base 10 and places the battery or battery component to be tested into the receiving space 21, it is then placed back on the heating base 10 to prepare for subsequent heating. To avoid damage to the sealed chamber 20 during disassembly and assembly, preferably, the temperature sensor 40 is movably mounted on the mounting bracket 30, allowing the temperature probe 41 to switch between a detection position and a non-detection position. When the sealed chamber 20 is removed, the temperature sensor 40 can move on the mounting bracket 30, thereby placing the temperature probe 41 in the non-detection position. When the temperature probe 41 is in the non-detection position, it can be separated from the sealed chamber 20, thus reducing the risk of collision and damage. When the temperature probe 41 is in the detection position, it contacts the sealed chamber 20, thereby detecting the actual heating temperature within the sealed chamber 20. This structure allows the temperature sensor 40 to be movable, thereby preventing it from colliding with the sealed chamber 20 during the assembly and disassembly of the sealed chamber 20.

[0043] In this embodiment of the invention, the mounting bracket 30 can have various structures. The mounting bracket 30 may include intersecting first rods 31 and 32. The first end of the first rod 31 is fixed to the heating base 10. The second end of the first rod 31 extends away from the heating base 10. The first end of the second rod 32 is fixed to the second end of the first rod 31. The temperature sensor 40 may also include a sliding rod 43, which is slidably disposed at the second end of the second rod 32. The temperature probe 41 may be fixed to the bottom end of the sliding rod 43, and the actual heating temperature display screen 42 is fixed to the top end of the sliding rod 43. The sliding rod 43 can slide along the second rod 32 to switch the temperature probe 41 between a detection position and a non-detection position. This structure provides a base for the sliding rod 43 to slide using the intersecting first rod 31 and 32, thereby facilitating the mounting of the temperature probe 41 above the sealed chamber 20 for convenient detection.

[0044] Specifically, the first rod 31 can be a vertical rod, and the second rod 32 can be a horizontal rod. The first rod 31 and the second rod 32 are perpendicular to each other.

[0045] There are several ways in which the sliding rod 43 and the second end of the second rod 32 can slide together. For example, the sliding rod 43 can have a dovetail protrusion, and the second rod 32 can have a dovetail groove. The sliding rod 43 and the second rod 32 can be connected through the sliding engagement between the dovetail protrusion and the dovetail groove. Of course, in other embodiments, the mounting bracket 30 may also include a guide cylinder 33, which can be fixed to the second end of the second rod 32. The sliding rod 43 passes through the guide cylinder 33 and slides together with it. In this case, the sliding rod 43 can slide in the guide cylinder 33, thereby enabling the temperature probe 41 to switch between the detection position and the non-detection position. This structure allows the operator to directly insert the sliding rod 43 into the guide cylinder 33, thus facilitating the assembly of the temperature sensor 40 and the mounting bracket 30.

[0046] Of course, there can be friction between the sliding rod 43 and the guide cylinder 33. When adjusting the position of the temperature probe 41, the operator can apply a certain force to drive the sliding rod 43 to slide along the guide cylinder 33. To prevent the temperature sensor 40 from falling off the mounting bracket 30, the actual heating temperature display screen 42 can make limiting contact with the guide cylinder 33 when the temperature probe 41 is in the detection position. In this case, the guide cylinder 33 can limit the temperature sensor 40 by making limiting contact with the actual heating temperature display screen 42, thereby preventing the temperature sensor 40 from falling off due to excessive descent.

[0047] To improve the accuracy of the temperature sensor 40 in detecting the actual heating temperature, in one optional embodiment, the sealed chamber 20 may have a protrusion 22 extending into the receiving space 21. The sealed chamber 20 also has a clearance groove 23, the opening of which protrudes from the outer surface of the sealed chamber 20. The bottom wall of the clearance groove 23 extends to the free end of the protrusion 22. The bottom wall of the clearance groove 23 is opposite to its opening. When the temperature probe 41 is in the detection position, it extends from the opening of the clearance groove 23 to the bottom of the clearance groove 23. In this case, the temperature probe 41 can extend closer to the center of the receiving space 21 via the clearance groove 23, thereby enabling more accurate detection of the actual heating temperature.

[0048] In this embodiment of the invention, the sealed chamber 20 may include a chamber body 24 and a sealing cover 25. The sealing cover 25 is detachably installed at the opening of the chamber body 24 and forms an accommodating space 21 with the chamber body 24. Of course, the sealed chamber 20 may also be a glove box, and this embodiment of the invention does not limit the specific type of the sealed chamber 20. When the sealed chamber 20 is provided with a protrusion 22 extending into the accommodating space 21, the protrusion 22 may be provided on the inner surface of the sealing cover 25. A clearance groove 23 is formed on the integral formed by the sealing cover 25 and the protrusion 22, and the groove opening of the clearance groove 23 is exposed on the outer surface of the sealing cover 25. In this structure, the protrusion 22 not only functions to form the clearance groove 23, but also functions to strengthen the sealing cover 25.

[0049] Specifically, the sealing cover 25 and the chamber body 24 can be inserted into each other for a sealing fit, or a sealing connection can be achieved through other means. Specifically, the sealing cover 25 and the chamber body 24 can be detachably connected through a sealing thread fit.

[0050] The gas detection device disclosed in this embodiment of the invention may further include a carrier gas input line 50 and a carrier gas output line 60. The carrier gas input line 50 is connected to the containing space 21 and is used to input carrier gas into the containing space 21. The carrier gas output line 60 is connected to the containing space 21 and is used to output the carrier gas formed by heating the battery or battery component containing the battery to be tested in the containing space 21. The carrier gas can be an inert gas, such as nitrogen or argon; this embodiment of the invention does not limit the specific type of carrier. For ease of operation, the carrier gas input line 50 may be provided with a first switching valve 51, which is used to control the on / off state of the carrier gas input line 50. The carrier gas output line 60 may be provided with a second switching valve 61, which is used to control the on / off state of the carrier gas output line 60.

[0051] In the specific testing process, the operator places the battery or battery component to be tested in the sealed chamber 20 and then places it on the heating base 10. Before the heating base 10 heats up, the first switching valve 51 and the second switching valve 61 are opened, thereby carrying out the air in the accommodating space 21 of the sealed chamber 20 through the carrier gas. After the carrier gas is introduced for a set time, the heating base 10 can be controlled to heat the sealed chamber 20. During the heating process, the battery or battery component to be tested will generate the gas to be tested. This gas to be tested will be carried out of the accommodating space 21 by the carrier gas, and then used by the subsequent gas composition analyzer for component detection. It should be noted that the gas detection device disclosed in the embodiments of the present invention may also include a gas composition analyzer. The mechanism of the gas composition analyzer in analyzing the gas to be tested carried by the carrier gas and the structure of the gas composition analyzer are existing technologies and are not the focus of the present invention, so they will not be described in detail. The carrier gas inlet pipe 50 and carrier gas outlet pipe 60 enable the gas to be tested generated by heating the battery or battery components within the containment space 21 to be tested in a timely manner, thereby achieving online detection. This undoubtedly improves the detection efficiency of the gas detection device.

[0052] It should be noted that the object to be tested in this article can be the entire battery or the components that make up the battery (i.e., the battery components), such as the battery electrode plates, powder materials, electrolytes, etc. The embodiments of the present invention do not limit the specific types of battery components.

[0053] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A gas detection device, characterized by, It includes a heating base (10), a sealed chamber (20), a mounting bracket (30), and a temperature sensor (40); wherein, The sealed chamber (20) is located on the heating base (10) and is used to accommodate the battery or battery components to be tested; the heating base (10) is used to heat the sealed chamber (20), and the heating base (10) is provided with a temperature adjustment knob (11) for adjusting the preset heating temperature and a preset heating temperature display screen (12); the preset heating temperature display screen (12) is used to display the preset heating temperature, the temperature sensor (40) is mounted on the heating base (10) through the mounting bracket (30), the temperature sensor (40) includes a temperature probe (41) and an actual heating temperature display screen (42), the temperature probe (41) is used to detect the actual heating temperature in the sealed chamber (20), the actual heating temperature display screen (42) is used to display the actual heating temperature, and the actual heating temperature is used to verify the preset heating temperature; The temperature sensor (40) is movably mounted on the mounting bracket (30) so that the temperature probe (41) can switch between a detection position and a non-detection position; The sealed chamber (20) is provided with a receiving space (21). The sealed chamber (20) is provided with a protrusion (22) extending into the receiving space (21). The sealed chamber (20) is provided with a relief groove (23). The opening of the relief groove (23) is exposed on the outer surface of the sealed chamber (20). The bottom wall of the relief groove (23) extends to the free end of the protrusion (22). The bottom wall of the relief groove (23) is opposite to the opening of the relief groove (23). When the temperature probe (41) is in the detection position, the temperature probe (41) extends from the opening of the relief groove (23) to the bottom of the relief groove (23).

2. The gas detection device of claim 1, wherein, The heating base (10) includes an electromagnetic heating base (14) and an electromagnetic induction element (13). The electromagnetic induction element (13) is disposed on the electromagnetic heating base (14), and the sealed chamber (20) is disposed on the electromagnetic induction element (13). The electromagnetic induction element (13) and the electromagnetic heating base (14) are electromagnetically coupled to heat the sealed chamber (20). The temperature adjustment knob (11) and the preset heating temperature display screen (12) are both disposed on the electromagnetic heating base (14).

3. The gas detection device of claim 2, wherein, The electromagnetic induction element (13) is an electromagnetic induction cylinder, and the sealed chamber (20) is detachably inserted into the electromagnetic induction cylinder. The sealed chamber (20) is positioned and matched with the electromagnetic induction cylinder.

4. The gas detection device according to claim 1, characterized in that, The mounting bracket (30) includes an intersecting first rod (31) and a second rod (32). The first end of the first rod (31) is fixed to the heating base (10), and the second end of the first rod (31) extends away from the heating base (10). The first end of the second rod (32) is fixed to the second end of the first rod (31). The temperature sensor (40) includes a sliding rod (43), which is slidably disposed at the second end of the second rod (32). The temperature probe (41) is fixed to the bottom end of the sliding rod (43), and the actual heating temperature display screen (42) is fixed to the top end of the sliding rod (43). The sliding rod (43) can slide along the second rod (32) to drive the temperature probe (41) to switch between the detection position and the non-detection position.

5. The gas detection device according to claim 4, characterized in that, The mounting bracket (30) also includes a guide cylinder (33) fixed to the second end of the second rod (32). The sliding rod (43) passes through the guide cylinder (33) and slides in cooperation with the guide cylinder (33). When the temperature probe (41) is in the detection position, the actual heating temperature display screen (42) is in limiting contact with the guide cylinder (33).

6. The gas detection device according to claim 1, characterized in that, The sealed chamber (20) includes a chamber body (24) and a sealing cover (25). The sealing cover (25) is detachably installed at the opening of the chamber body (24) and forms the receiving space (21) with the chamber body (24). The protrusion (22) is provided on the inner surface of the sealing cover (25). The clearance groove (23) is formed on the integral formed by the sealing cover (25) and the protrusion (22), and the groove of the clearance groove (23) is exposed on the outer surface of the sealing cover (25).

7. The gas detection device according to claim 6, characterized in that, The sealing cap (25) and the chamber body (24) are detachably connected by a sealing thread.

8. The gas detection device according to any one of claims 1 to 7, characterized in that, The sealed chamber (20) is provided with a receiving space (21). The gas detection device further includes a carrier gas input pipe (50) and a carrier gas output pipe (60). The carrier gas input pipe (50) is connected to the receiving space (21) and is used to input carrier gas into the receiving space (21). The carrier gas output pipe (60) is connected to the receiving space (21) and is used to output the carrier gas formed by heating the battery or battery component to be tested in the receiving space (21).

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