Characterization device and characterization method for gas content in slurry

Abstract

The invention provides a characterization device and characterization method for the content of gas in slurry, the characterization device for the content of the gas in the slurry comprises a shell, a gas quantity detection device, a tension detection device, a counterweight and a stirring device, the shell is provided with a detection bin for accommodating the slurry to be detected; the gas quantity detection device is communicated with the detection bin; the counterweight part is used for being suspended and immersed in to-be-detected slurry, the tension detection device is fixed on the detection bin, and the detection end of the tension detector is connected with the counterweight part; the stirring device comprises a stirring part immersed in the to-be-detected slurry, the stirring part is used for stirring the to-be-detected slurry, and the characterization device for the gas content in the slurry can characterize the gas content in the to-be-detected slurry and the content of gas exhausted by the to-be-detected slurry.

Description

Technical Field

[0001] The present invention relates to the technical field of battery material detection, and in particular to a device and method for characterizing gas content in slurry. Background Art

[0002] In the current battery manufacturing industry, most of the electrode manufacturing processes still require the active material, binder, dispersant, conductive agent, solvent, additive and other materials to be configured into a slurry, and the slurry is evenly coated on the current collector by extrusion coating, and then dried. However, silicon-based negative electrode slurry, including porous hard carbon slurry and slurry containing lithium agent, its internal components will react with solvents and produce gas. Some of the gas escapes from the slurry, and some of the gas will remain in the slurry. During the coating process, if the gas content in the slurry exceeds the gas content range of the silicon-based negative electrode slurry adapted by the coating device, such as exceeding the coating and reflux control range of the coater, there will be coating gap stripping, foil leakage, head and tail wavy lines, coating appearance bubble distribution, uneven surface density, decreased electrode cohesion, powder removal, film making and winding machine cannot be positioned, the energy density of the battery cell is reduced, and the risk of battery cell self-discharge increases. Therefore, it is necessary to characterize the gas content in the slurry.

[0003] The characterization device in the related art can only characterize the escaped portion of the gas produced by the slurry, and cannot directly characterize the gas content in the slurry. Summary of the Invention

[0004] The present invention provides a device for characterizing the gas content in slurry, so as to solve the problem that the characterization device in the related art can only characterize the escaped part of the gas produced by the slurry, but cannot characterize the gas content in the slurry.

[0005] The gas content characterization device of the present invention comprises: A housing having a detection chamber for accommodating a slurry to be tested; A gas volume detection device, the gas volume detection device being in communication with the detection chamber; A tension detection device and a counterweight for suspending and immersing in the slurry to be tested, wherein the tension detection device is fixed on the testing chamber, and a detection end of the tension detector is connected to the counterweight; A stirring device includes a stirring member immersed in the slurry to be tested, and the stirring member is used to stir the slurry to be tested.

[0006] It can be understood that the counterweight is suspended and immersed in the slurry to be tested, and is subjected to the downward gravity G and the upward buoyancy F exerted by the slurry to be tested. 浮 , the tension F detected by the tension detection device 拉 =GF 浮 .

[0007] According to Archimedes' law of buoyancy, F 浮 =ρgV 排 , g and V 排 is a fixed value, that is, F 浮 It is related to the density ρ of the slurry to be tested. At the same time, the density ρ of the slurry to be tested is related to the gas content in the slurry to be tested. Therefore, it can be seen that the tension F detected by the tension detection device is 拉 It is related to the gas content in the slurry to be tested, that is, the tension F detected by the tension detection device. 拉 There is a linear relationship between the gas content in the slurry to be measured.

[0008] That is to say, the tension F detected by the tension detection device can be 拉 The gas content in the slurry to be tested can be characterized by the tension F detected by the tension detection device. 拉 The data plots a curve of the change of the gas content in the slurry to be tested during the gas production process, so that the staff can refer to the curve of the change of the gas content in the slurry to be tested. When the gas content in the slurry to be tested is suitable for coating using a coating device, the slurry to be tested is coated, which can avoid problems such as uneven surface density during the coating process.

[0009] Therefore, the device for characterizing the gas content in slurry of the present invention can characterize the gas content in the slurry to be measured.

[0010] Optionally, the gas volume detection device includes a gas measuring cylinder and a piston slidably arranged in the gas measuring cylinder, and the gas measuring cylinder is connected to the detection chamber.

[0011] Optionally, the distance between the side wall of the detection chamber and the center line of the detection chamber is L1, the distance between the gas measuring cylinder and the center line of the detection chamber is L2, and L2≤0.5L1.

[0012] Optionally, the top of the counterweight is located below the liquid surface of the slurry to be tested, and the distance between the top of the counterweight and the liquid surface of the slurry to be tested is greater than or equal to 3 cm.

[0013] Optionally, the device for characterizing the gas content in slurry according to an embodiment of the present invention further includes a heating device, which is provided on the shell to heat the slurry to be tested.

[0014] Optionally, the tension detection device includes a tension meter, a fixed end of the tension meter is connected to the top wall of the detection chamber, and a detection end of the tension meter is connected to the counterweight.

[0015] Optionally, a maximum liquid level line is provided on the side wall of the detection chamber, and the distance between the maximum liquid level line and the top wall of the detection chamber is greater than or equal to 3 cm.

[0016] Optionally, the stirring device further comprises a driving member, and the driving member drives the stirring member to rotate to stir the slurry to be tested.

[0017] The present invention also provides a method for characterizing the gas content in slurry using the device for characterizing the gas content in slurry described in the above embodiment.

[0018] The method for characterizing the gas content in the slurry according to the embodiment of the present invention comprises the following steps: Step S100, determining whether the characterization device has been initialized and calibrated, wherein the initialization calibration is to establish a calibration curve between the measured value of the tensiometer and the gas content in the slurry; If not, initializing and calibrating the characterization device; If yes, execute S200; Step S200: injecting the slurry to be tested into the testing chamber so that the counterweight is immersed in the slurry to be tested; Stir the slurry to be tested and heat it to a preset temperature; In step S300, the slurry to be tested is stirred and kept at a preset temperature, and the measurement value of the tensiometer is obtained in real time. According to the calibration curve, the gas content in the slurry to be tested is obtained and a curve of the change of the gas content in the slurry to be tested is drawn; the measurement value of the gas volume detection device is obtained in real time, the content of the gas discharged from the slurry to be tested is obtained, and a curve of the change of the content of the gas discharged from the slurry to be tested is drawn.

[0019] Optionally, in step S100, initializing and calibrating the characterization device includes the following steps: Step S210: prepare two slurries with the same parameters, inject one into the testing chamber, and seal the other in a sealed bag and place it in an oven.

[0020] Step S220: heating the slurry in the testing chamber and the slurry to be tested in the oven to the same temperature; Step S230: obtaining the measurement value of the dynamometer and the gas content of the slurry in the detection chamber in real time; Step S240: performing a linear fit between the measured value of the tensile meter and the gas content in the slurry in the detection chamber to obtain a calibration curve between the measured value of the tensile meter and the gas content in the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 Schematic diagram of the structure of the gas content characterization device in the slurry according to an embodiment of the present invention.

[0023] In the picture: 1. Shell; 101. Inspection chamber; 102. Feed port; 103. Blocking piece; 103. Exhaust port; 2. Gas volume detection device; 201. Gas measuring cylinder; 202. Piston; 3. Tensile force detection device; 301. Tensile force meter; 4. Counterweight; 5. Stirring device; 501. Stirring member; 502. Driving member; 6. Heating device. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary, such as by glue injection between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0027] To solve the problem that the characterization device in the related art can only characterize the gas production of the slurry but cannot characterize the gas content in the slurry.

[0028] The invention provides a device for characterizing gas content in slurry.

[0029] The device for characterizing the gas content in slurry according to an embodiment of the present invention includes a housing 1 , a gas volume detection device 2 , a tension detection device 3 , a counterweight 4 and a stirring device 5 .

[0030] Among them, the shell 1 has a detection chamber 101 for accommodating the slurry to be tested; the gas volume detection device 2 is connected to the detection chamber 101; the counterweight 4 is used to be suspended and immersed in the slurry to be tested, the tension detection device 3 is fixed on the detection chamber 101, and the detection end of the tension detector is connected to the counterweight 4; the stirring device 5 includes a stirring member 501 immersed in the slurry to be tested, and the stirring member 501 is used to stir the slurry to be tested.

[0031] It can be understood that the counterweight 4 is suspended and immersed in the slurry to be tested, and is subjected to the downward gravity G and the upward buoyancy Fbuoy applied by the slurry to be tested. The tension detected by the tension detection device 3 is Fpull=GFbuoy.

[0032] According to Archimedes' law of buoyancy, Fbuoy = ρgVpai, where g and Vpai are fixed values, that is, Fbuoy is related to the density ρ of the slurry to be tested, and at the same time, the density ρ of the slurry to be tested is related to the gas content in the slurry to be tested. Therefore, it can be seen that the tension Fpull detected by the tension detection device 3 is related to the gas content in the slurry to be tested, that is, there is a linear relationship between the tension Fpull detected by the tension detection device 3 and the gas content in the slurry to be tested.

[0033] That is to say, the gas content in the slurry to be tested can be characterized by the tension F pull detected by the tension detection device 3, and a change curve of the gas content in the slurry to be tested during the gas production process can be drawn according to the tension F pull data detected by the tension detection device 3, so that the staff can refer to the change curve of the gas content in the slurry to be tested, and when the gas content in the slurry to be tested is suitable for coating using a coating device, the slurry to be tested is coated, which can avoid problems such as gap material, uneven surface density, etc. during the coating process.

[0034] Therefore, the slurry gas content characterization device of the embodiment of the present invention can characterize the gas content in the slurry to be tested. The slurry gas content characterization device of the present invention is suitable for battery slurries that are prone to gas generation, such as positive electrode slurries, negative electrode slurries, etc., and is particularly suitable for silicon-based negative electrode slurries.

[0035] The following is combined with Figure 1 The gas content characterization device in slurry according to an embodiment of the present invention is further described.

[0036] The device for characterizing the gas content in slurry according to an embodiment of the present invention includes a housing 1 , a gas volume detection device 2 , a tension detection device 3 , a counterweight 4 and a stirring device 5 .

[0037] The housing 1 has a detection chamber 101 for accommodating the slurry to be tested, and the gas volume detection device 2 is connected to the detection chamber 101; The shell 1 is provided with a feed port 102 and an exhaust port 104 which are connected to the detection chamber 101. The feed port 102 is used to inject the slurry to be tested into the detection chamber 101. At the same time, the feed port 102 should be provided with a blocking member 103 to block the feed port 102 during the detection process to prevent the gas in the detection chamber 101 from overflowing from the feed port 102; at the same time, the exhaust port 104 is used to discharge the gas generated by the slurry to be tested, that is, the gas volume detection device 2 can be connected to the exhaust port 104 so that the gas in the detection chamber 101 can enter the gas volume detection device 2 through the exhaust port 104.

[0038] like Figure 1 As shown, the counterweight 4 is used to be suspended and immersed in the slurry to be tested, the tension detection device 3 is fixed on the detection chamber 101, and the detection end of the tension detector is connected to the counterweight 4.

[0039] It can be understood that the tension detection device 3 is fixed on the detection chamber 101, and the detection end of the tension detector is connected to the counterweight 4, so that the counterweight 4 is suspended and immersed in the slurry to be tested. The counterweight 4 is subjected to the downward gravity G and the upward buoyancy F exerted by the slurry to be tested. 浮 Therefore, the tension F detected by the tension detection device 3 拉 =GF 浮 .

[0040] The stirring device 5 includes a stirring member 501 immersed in the slurry to be tested, and the stirring member 501 is used to stir the slurry to be tested.

[0041] According to Archimedes' law of buoyancy, F 浮 =ρgV 排 , g and V 排 is a fixed value, that is, F 浮 It is related to the density ρ of the slurry to be tested, and the density ρ of the slurry to be tested is related to the gas content in the slurry to be tested. Therefore, it can be seen that the tension F detected by the tension detection device 3 is 拉 It is related to the gas content in the slurry to be tested, that is, the tension F detected by the tension detection device 3 拉 There is a linear relationship between the gas content in the slurry to be measured.

[0042] That is to say, the tension F detected by the tension detection device 3 can be 拉The gas content in the slurry to be tested can be characterized by the tension F detected by the tension detection device 3. 拉 The data plots a curve of the change of the gas content in the slurry to be tested during the gas production process, so that the staff can refer to the curve of the change of the gas content in the slurry to be tested. When the gas content in the slurry to be tested is suitable for coating using a coating device, the slurry to be tested is coated, which can avoid problems such as uneven surface density during the coating process.

[0043] In some embodiments, the gas volume detection device includes a gas measuring cylinder 201 and a piston 202 slidably disposed in the gas measuring cylinder 201 , and the gas measuring cylinder 201 is connected to the detection chamber 101 .

[0044] The gas measuring cylinder 201 is provided with a scale, and the content of the escaped gas produced by the slurry to be tested, that is, the exhaust volume of the slurry to be tested in the detection chamber 101, can be obtained according to the scale corresponding to the piston 202 in the gas measuring cylinder 201.

[0045] In order to improve the detection accuracy, the position of the piston 202 should be calibrated before the detection so that it is located at the 0 scale.

[0046] In some embodiments, the distance between the side wall of the detection chamber 101 and the center line of the detection chamber 101 is L1, and the distance between the connection point between the gas measuring cylinder 201 and the detection chamber 101 and the center line of the detection chamber 101 is L2, and L2≤0.5L1.

[0047] That is, the distance between the exhaust port 104 and the center line of the detection chamber 101 is L2, and L2≤0.5L1.

[0048] It can be understood that when the stirring member 501 of the stirring device 5 stirs the slurry to be tested, the liquid level of the slurry to be tested will show a distribution with low inside and high outside. Therefore, in order to avoid the problem of the liquid level of the slurry to be tested entering the exhaust port 104 and blocking the exhaust port 104 when it is too high, the distance L2 between the exhaust port 104 and the center line of the detection chamber 101 should be L2≤0.5L1.

[0049] In some embodiments, the counterweight 4 is in an inverted cone shape.

[0050] It can be understood that the gas distribution in the slurry to be tested tends to be less at the bottom and more at the top. Setting the counterweight 4 to an inverted cone shape can increase the contact area between the counterweight 4 and the gas in the slurry to be tested without increasing the weight of the counterweight 4, making the buoyancy change of the counterweight 4 more representative and improving the accuracy.

[0051] In some embodiments, the top of the counterweight 4 is located below the liquid surface of the slurry to be tested, and the distance between the top of the counterweight 4 and the liquid surface of the slurry to be tested is greater than or equal to 3 cm.

[0052] By arranging the top of the counterweight 4 to be located below the liquid surface of the slurry to be tested and the distance between the top and the liquid surface of the slurry to be tested is greater than or equal to 3 cm, the counterweight 4 can be completely immersed in the slurry to be tested.

[0053] In some embodiments, a heating device 6 is further included, and the heating device 6 is provided on the housing 1 to heat the slurry to be tested.

[0054] Optionally, the heating device 6 may include a heating coil made of resistance wire, which may be wound around the outer wall of the shell 1. The area of ​​the shell 1 corresponding to the heating coil may be made of high thermal conductivity material so that the heating coil can heat the slurry to be tested to a preset temperature.

[0055] In some embodiments, the tension detection device 3 includes a tension meter 301 , a fixed end of the tension meter 301 is connected to the top wall of the detection chamber 101 , and a detection end of the tension meter 301 is connected to the counterweight 4 .

[0056] Optionally, the dynamometer 301 may be a spring dynamometer 301 , a digital dynamometer 301 , etc., and may be configured according to actual needs.

[0057] In some embodiments, a maximum liquid level line is provided on the side wall of the detection chamber 101 , and the distance between the maximum liquid level line and the top wall of the detection chamber 101 is greater than or equal to 3 cm.

[0058] When the stirring member 501 of the stirring device 5 stirs the slurry to be tested, the liquid level of the slurry to be tested will show a distribution with low inside and high outside. Therefore, in order to avoid the problem of the liquid level of the slurry to be tested entering the exhaust port 104 and blocking the exhaust port 104 when it is too high, the distance between the highest liquid level line and the top wall of the detection chamber 101 is greater than or equal to 3 cm.

[0059] In some embodiments, the stirring device 5 further includes a driving member 502 , which drives the stirring member 501 to rotate so as to stir the slurry to be tested.

[0060] Optionally, the driving member 502 is a magnetic driving member 502 , and the stirring member 501 is a magnetic stirring member 501 . The magnetic driving member 502 can drive the magnetic stirring member 501 to rotate by magnetic force to stir the slurry to be tested.

[0061] Setting the driving member 502 as a magnetic driving member 502 and the stirring member 501 as a magnetic stirring member 501 can avoid the setting of a transmission shaft, realize transmission through air, and reduce the complexity of the transmission structure between the driving member 502 and the stirring member 501.

[0062] The present invention also provides a method for characterizing the gas content in a slurry using the device for characterizing the gas content in a slurry described in the above embodiment.

[0063] The method for characterizing the gas content in a slurry according to an embodiment of the present invention comprises the following steps: Step S100, determining whether the characterization device has been initialized and calibrated, wherein the initialization calibration is to establish a calibration curve between the measurement value of the tensiometer 301 and the gas content in the slurry; If not, initializing and calibrating the characterization device; If yes, execute S200; Step S200: inject the slurry to be tested into the testing chamber 101, so that the counterweight 4 is immersed in the slurry to be tested; The slurry to be tested is stirred and heated to a preset temperature; specifically, the preset temperature is 30-80°C.

[0064] In step S300, the slurry to be tested is stirred and kept at a preset temperature, and the measurement value of the tensiometer 301 is obtained in real time. According to the calibration curve, the gas content in the slurry to be tested is obtained and a curve of the change of the gas content in the slurry to be tested is drawn; the measurement value of the gas volume detection device is obtained in real time, the content of the gas discharged from the slurry to be tested is obtained, and a curve of the change of the content of the gas discharged from the slurry to be tested is drawn.

[0065] That is to say, the gas content characterization device in the slurry of the above embodiment can be used to obtain a change curve of the gas content in the slurry to be tested, so that the staff can refer to the change curve of the gas content in the slurry to be tested. When the gas content in the slurry to be tested is suitable for coating using a coating device, the slurry to be tested is coated, which can avoid problems such as uneven surface density during the coating process.

[0066] In some embodiments, in step S100, initializing and calibrating the characterization device includes the following steps: Step S210: prepare two slurries to be tested with the same parameters, inject one into the testing chamber 101, and seal the other in a sealed bag and place it in an oven.

[0067] Step S220: heating the slurry to be tested in the testing chamber 101 and the slurry to be tested in the oven to the same temperature; Step S230: obtaining the measurement value of the tensiometer 301 and the gas content of the slurry in the oven in real time; Specifically, the gas content of the slurry in the oven can be obtained in the following manner: The change in volume of the slurry in the oven is calculated in real time based on the change in density of the slurry in the oven and the mass of the slurry in the oven. The change in volume of the slurry in the oven is the gas content of the slurry in the oven.

[0068] Step S240: performing linear fitting on the measurement value of the tensile meter 301 and the gas content in the slurry in the detection chamber 101 to obtain a calibration curve of the measurement value of the tensile meter 301 and the gas content in the slurry.

[0069] By initializing and calibrating the characterization device, a calibration curve of the measurement value of the tensile gauge of the characterization device and the gas content in the slurry can be obtained, so that when the characterization device is subsequently used to characterize the gas content in the slurry to be tested, the gas content in the slurry to be tested can be directly obtained based on the measurement value of the tensile gauge of the characterization device, and then a change curve of the gas content in the slurry to be tested can be obtained, so that the staff can refer to the change curve of the gas content in the slurry to be tested, and when the gas content in the slurry to be tested is suitable for coating using a coating device, the slurry to be tested is coated, which can avoid problems such as uneven surface density during the coating process.

[0070] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A device for characterizing gas content in slurry, characterized in that: include: A housing (1), the housing (1) having a detection chamber (101) for accommodating slurry to be tested; A gas volume detection device (2), the gas volume detection device (2) being in communication with the detection chamber (101); A tension detection device (3) and a counterweight (4) for being suspended and immersed in the slurry to be tested, wherein the tension detection device (3) is fixed on the detection chamber (101), and a detection end of the tension detector is connected to the counterweight (4); A stirring device (5), the stirring device (5) comprising a stirring member (501) immersed in the slurry to be tested, the stirring member (501) being used to stir the slurry to be tested.

2. The device for characterizing gas content in slurry according to claim 1, characterized in that: The gas volume detection device (2) comprises a gas measuring cylinder (201) and a piston (202) slidably arranged in the gas measuring cylinder (201), and the gas measuring cylinder (201) is connected to the detection chamber (101).

3. The device for characterizing gas content in slurry according to claim 1, characterized in that: The distance between the side wall of the detection chamber (101) and the center line of the detection chamber (101) is L1, and the distance between the gas measuring cylinder (201) and the center line of the detection chamber (101) is L2, and L2 is ≤ 0.5L1.

4. The device for characterizing gas content in slurry according to claim 1, characterized in that: The top end of the counterweight (4) is located below the liquid surface of the slurry to be tested, and the distance between the top end of the counterweight (4) and the liquid surface of the slurry to be tested is greater than or equal to 3 cm.

5. The device for characterizing gas content in slurry according to claim 1, characterized in that: It also includes a heating device (6), which is arranged on the housing (1) to heat the slurry to be tested.

6. The device for characterizing gas content in slurry according to claim 1, characterized in that: The tension detection device (3) comprises a tension meter (301), a fixed end of the tension meter (301) is connected to the top wall of the detection chamber (101), and a detection end of the tension meter (301) is connected to the counterweight (4).

7. The device for characterizing gas content in slurry according to claim 1, characterized in that: A maximum liquid level line is provided on the side wall of the detection chamber (101), and the distance between the maximum liquid level line and the top wall of the detection chamber (101) is greater than or equal to 3 cm.

8. The device for characterizing gas content in slurry according to claim 1, characterized in that: The stirring device (5) further comprises a driving member (502), wherein the driving member (502) drives the stirring member (501) to rotate so as to stir the slurry to be tested.

9. A method for characterizing the gas content in slurry using the device for characterizing the gas content in slurry according to any one of claims 1 to 8, characterized in that: The steps include: Step S100, determining whether the characterization device has been initialized and calibrated, wherein the initialization calibration is to establish a calibration curve between the measurement value of the tensiometer (301) and the gas content in the slurry; If not, initializing and calibrating the characterization device; If yes, execute S200; Step S200, injecting the slurry to be tested into the testing chamber (101), so that the counterweight (4) is immersed in the slurry to be tested; Stir the slurry to be tested and heat it to a preset temperature; Step S300, stirring the slurry to be tested and keeping it at a preset temperature, obtaining the measurement value of the tensiometer (301) in real time, obtaining the gas content in the slurry to be tested based on the calibration curve, and drawing a curve showing the change of the gas content in the slurry to be tested; obtaining the measurement value of the gas volume detection device in real time, obtaining the content of the gas discharged from the slurry to be tested, and drawing a curve showing the change of the content of the gas discharged from the slurry to be tested.

10. The method for characterizing the gas content in slurry according to claim 9, characterized in that: In step S100, the characterization device is initialized and calibrated, including the following steps: Step S210: preparing two slurries with the same parameters, injecting one into the detection chamber (101), and sealing the other in a sealed bag and placing it in an oven; Step S220: heating the slurry in the detection chamber (101) and the slurry in the oven to the same temperature; Step S230: obtaining the measurement value of the dynamometer (301) and the gas content of the slurry in the detection chamber (101) in real time; Step S240: performing a linear fit on the measured value of the tensile meter (301) and the gas content in the slurry in the detection chamber (101), and obtaining a calibration curve of the measured value of the tensile meter (301) and the gas content in the slurry.

Images