Gas production detection device for silicon-based negative electrode slurry
By designing a silicon-based negative electrode slurry gas production detection device including an open container, a sealing cover, a conduit, a drying pipe and a gas flowmeter, the problem of low gas production detection efficiency and uncontrollable accuracy in the prior art is solved, and efficient and accurate gas production measurement is achieved, which improves working efficiency and reduces costs.
Patent Information
- Application Number
- CN202422484069.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The prior art lacks simple and effective measuring devices to detect gas production during the homogenization of the negative electrode material, which affects the research on the performance of the negative electrode material and battery assembly and operation.
A silicon-based negative electrode slurry gas production detection device including an open container, a sealing cover, a conduit, a drying pipe and a gas flowmeter was designed. The gas flowmeter was used to detect the gas flow in real time, and the small liquid beads were removed in combination with the gas-liquid separation membrane and a drying pipe to improve the measurement accuracy.
It realizes efficient and accurate gas production detection, improves work efficiency, simplifies the measurement process, and reduces costs.
Smart Images
Figure CN223166533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery anode material detection, in particular to a gas production detection device for silicon-based anode slurry. Background Art
[0002] With the wide application of lithium-ion batteries in the fields of portable electronic devices, electric vehicles, and energy storage systems, battery performance, lifespan, and safety have become the focus of research. As an important component of lithium-ion batteries, the performance of the anode material directly affects the overall performance of the battery. In the process of preparing the anode material, the homogenization process is a key link, and the quality of homogenization is directly related to the electrochemical performance of the anode material and the final performance of the battery.
[0003] However, in the homogenization process, some gases may be generated, and the generation and release of these gases have an important impact on the performance of the anode material and the subsequent assembly and operation of the battery. At present, the research on gas production during the homogenization process of anode materials is relatively scarce, and there is a lack of simple and effective measurement devices, which limits the systematic research and optimization of the homogenization process of anode materials by researchers.
[0004] Therefore, developing a new type of, efficient, and low-cost gas production measurement device for silicon-based anode materials is of great significance for accelerating the research and commercialization process of high-performance silicon-based anode materials. Summary of the Invention
[0005] The utility model provides a gas production detection device for silicon-based anode slurry to solve the technical problems of low efficiency, uncontrollable precision, and high cost of existing gas production measurement devices.
[0006] A gas production detection device for silicon-based anode slurry provided by the utility model is characterized by at least comprising:
[0007] An open container for containing silicon-based anode slurry;
[0008] A sealing cover sleeved on the open container;
[0009] A conduit communicated with the sealing cover;
[0010] A drying tube arranged on the conduit for drying the gas in the conduit; and
[0011] A gas flowmeter arranged on the conduit for real-time detection of the gas flow in the conduit.
[0012] In an embodiment of the utility model, the gas flowmeter comprises a first gas flowmeter and a second gas flowmeter, and the first gas flowmeter and the second gas flowmeter are respectively arranged at both ends of the drying tube.
[0013] In an embodiment of the present utility model, the gas production detection device further includes a sealing ring, and the sealing ring is arranged between the open container and the sealing cover.
[0014] In an embodiment of the present utility model, the material of the sealing ring is rubber, plastic or ceramic plastic composite material.
[0015] In an embodiment of the present utility model, the gas production detection device further includes a gas-liquid separation membrane, and the gas-liquid separation membrane is arranged between the sealing cover and the drying tube.
[0016] In an embodiment of the present utility model, the thickness of the gas-liquid separation membrane is 1 - 500 μm, and the pore diameter is 0.1 - 100 nm.
[0017] In an embodiment of the present utility model, the volume of the open container is 100 mL - 10 L, and the material of the open container is selected from any one of polytetrafluoroethylene, polyphenylene, quartz, ceramic, stainless steel, titanium material, nickel-based alloy and composite steel plate.
[0018] In an embodiment of the present utility model, a desiccant is placed in the drying tube, and the desiccant is selected from any one of silica gel desiccant, molecular sieve desiccant, calcium oxide desiccant, calcium chloride desiccant, montmorillonite desiccant, activated carbon desiccant or activated alumina desiccant.
[0019] In an embodiment of the present utility model, the material of the sealing cover is a high gas barrier material, and the material of the sealing cover is selected from any one or several of polyethylene, polypropylene, polystyrene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene dichloride, nylon.
[0020] In an embodiment of the present utility model, the device further includes a dispersion device, the container is placed in the dispersion device, and the dispersion device includes any one of a shaker, a magnetic stirrer or an ultrasonic device.
[0021] Advantages of the present utility model: The present utility model provides a gas production detection device for silicon-based anode slurry. The instruments used in this measurement device are common and low-cost, and the construction method is simple, sensitive and fast. Moreover, the measurement method is simple and has high precision, greatly improving the work efficiency. A gas-liquid separation membrane and a drying tube with a smaller pore diameter are arranged in the measurement device, which can further remove the influence of small liquid droplets and improve the accuracy of gas production detection of silicon-based anode slurry. Description of the Drawings
[0022] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 It is a schematic structural diagram of a negative electrode paste gas generation detection device provided by an embodiment of the present utility model.
[0024] Figure 2 It is a schematic structural diagram of a negative electrode paste gas generation detection device provided by another embodiment of the present utility model.
[0025] Explanation of the reference numerals in the drawings
[0026] 1. Open container; 2. Sealing ring; 3. Sealing cover; 4. Duct; 41. Connector; 5. Gas flowmeter; 51. First gas flowmeter; 52. Second gas flowmeter; 6. Gas-liquid separation membrane; 7. Drying tube; 8. Dispersion device. Specific embodiments
[0027] The following illustrates the embodiments of the present utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0028] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.
[0029] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present utility model. However, it is obvious to those skilled in the art that the embodiments of the present utility model can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present utility model difficult to understand.
[0030] Please refer to Figure 1 , Figure 1A detection device for gas production of a silicon-based anode slurry provided by an embodiment of the present invention is as follows Figure 1 As shown, this detection device includes an open container 1, a sealing cover 3, a conduit 4, a gas flow meter 5, and a drying tube 7. Among them, the silicon-based anode slurry is placed in the open container 1, and the sealing cover 3 is sleeved on the open container 1 to seal the open container 1. The conduit 4 is communicated with the sealing cover 3, and the drying tube 7 is arranged on the conduit 4 to dry the gas in the conduit 4. The gas flow meter 5 is arranged on the conduit 4 to detect the gas flow rate in the conduit 4 in real time. The gas production of the anode slurry can be intuitively measured by using the gas flow meter 5. The measurement method is simple and has high precision, which can greatly improve the work efficiency. Moreover, the drying tube 7 can dry the gas in the conduit 4 to remove the small liquid beads mixed in the gas, further improving the accuracy of the gas production measurement of the silicon-based anode slurry.
[0031] As Figure 1 shown, the material of the open container 1 is, for example, any one of materials such as polytetrafluoroethylene, polyphenylene, quartz, ceramic, stainless steel, titanium material, nickel-based alloy, and composite steel plate, and the volume of the open container 1 is 100 mL to 10 L. Specifically, for example, it is 100 mL, 200 mL, 500 mL, 800 mL, 1 L, 2 L, 3 L, 4 L, 5 L, 6 L, 7 L, 8 L, 9 L, 10 L. The present invention does not limit the shape of the open container 1. Preferably, the shape of the open container 1 can be, for example, cylindrical or frustum-shaped. An anti-adhesion coating can also be provided on the inner wall of the open container 1 to prevent the silicon-based anode slurry from sticking to the wall, facilitating the cleaning and reuse of the open container 1.
[0032] As Figure 1 shown, the sealing cover 3 is sleeved on the open container 1 to seal the open container 1. The material of the sealing cover 3 is, for example, selected from high gas barrier materials to prevent the gas generated in the open container 1 from leaking out. Specifically, the material of the sealing cover 3 is, for example, selected from any one or several of polyethylene, polypropylene, polystyrene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene dichloride, and nylon. The sealing cover 3 can be a single-layer polymer film, a multi-layer polymer film, or an organic-inorganic composite film. The present invention does not limit the shape of the sealing cover 3. Preferably, the shape of the sealing cover 3 can be, for example, hemispherical, arched, or cylindrical.
[0033] As Figure 1 shown, the present invention does not limit the connection method between the open container 1 and the sealing cover 3. For example, it can be connected by a threaded method, or it can also be connected by a snap method, or it can also be connected by a pin method. This gas production detection device can also include a sealing ring 2. The sealing ring 2 is arranged at the connection between the open container 1 and the sealing cover 3, which can further enhance the sealing performance at the connection between the open container 1 and the sealing cover 3 and prevent gas leakage.
[0034] As shown Figure 1 in FIG. 1, one end of the conduit 4 communicates with the sealing cover 3, and the other end can be connected to a gas combustion device. The material of the conduit 4 is, for example, silicone rubber, polyvinyl chloride, thermoplastic polyurethane, etc. The conduit 4 has good flexibility and can adapt to the bending during transmission to prevent gas leakage caused by breakage. As shown Figure 2 in FIG. 2, in another embodiment of the present invention, the conduit 4 can also communicate with the sealing cover 3 through a connector 41. The connector 41 has good sealing performance and can further prevent gas from leaking from the connection between the conduit 4 and the sealing cover 3. The material of the connector 41 is, for example, polytetrafluoroethylene, polyethylene, polypropylene, polyvinyl chloride or metal, etc.
[0035] As shown Figure 1 in FIG. 3, a drying tube 7 is arranged on the conduit 4 and communicates with the conduit 4. A desiccant is contained in the drying tube 7, and the desiccant can be selected from any one of silica gel desiccant, molecular sieve desiccant, calcium oxide desiccant, calcium chloride desiccant, montmorillonite desiccant, activated carbon desiccant or activated alumina desiccant, etc. The gas in the conduit 4 is dried by the drying tube, and the small liquid droplets mixed in the gas can be removed, thereby improving the accuracy of gas production detection. The volume of the drying tube and the amount of the desiccant in the present invention are not limited and can be designed according to the amount of the silicon-based anode slurry to be measured to ensure that the small liquid droplets generated by the anode slurry can be completely absorbed. In an embodiment of the present invention, the material of the drying tube 7 is, for example, glass, polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), etc. The drying tube 7 is made of a transparent material, and whether the desiccant inside is caked or not can be observed in real time so as to perform replacement or dehumidification treatment in time.
[0036] As shown Figure 1 in FIG. 4, this gas production detection device may further include a gas-liquid separation membrane 6. The gas-liquid separation membrane 6 is arranged in the conduit 4 and is located between the sealing cover 3 and the drying tube 7. The gas-liquid separation membrane 6 is arranged at the front end of the drying tube 7 and can first filter out a part of the small liquid droplets mixed in the gas, thereby relieving the pressure of the drying tube 7 and further enhancing the drying and dehumidification effects.
[0037] The thickness of the gas-liquid separation membrane 6 is 1 - 500 μm. Specifically, for example, it is 1 μm, 10 μm, 20 μm, 50 μm, 100 μm, 200 μm, 300 μm, 400 μm, 500 μm. The pore diameter of the gas-liquid separation membrane 6 is 0.1 - 100 nm. Specifically, for example, it is 0.1 nm, 0.5 nm, 1 nm, 5 nm, 10 nm, 20 nm, 50 nm, 80 nm, 100 nm. When the thickness and pore diameter of the gas-liquid separation membrane 6 are within this range, the small liquid droplets mixed in the gas generated by the anode slurry can be filtered, thereby further improving the accuracy of gas production measurement.
[0038] As shown Figure 1 in FIG. Figure 1 , a gas flow meter 5 is provided on the conduit 4. The gas flow meter 5 is arranged at the rear end of the drying tube 7 and can real-time monitor the gas flow rate in the conduit 4. The measuring range of the gas flow meter 5 is 0 to 100 mL / min. The number of the gas flow meters 5 is, for example, 1, 2 or more. As shownin FIG. Figure 2 in another embodiment of the present invention, the gas flow meter 5 includes a first gas flow meter 51 and a second gas flow meter 52. The first gas flow meter 51 and the second gas flow meter 52 are respectively arranged at both ends of the drying tube 7. By comparing the readings of the first gas flow meter 51 and the second gas flow meter 52, the gas drying effect can be observed, and whether the two gas flow meters 5 are working properly can also be observed.
[0039] As shown Figure 1 in FIG. Figure 1 , this gas production detection device may further include a dispersion device 8. The open container 1 is placed in the dispersion device 8. The dispersion device 8 includes any one of a shaker, a magnetic stirrer or an ultrasonic device, so as to homogenize the slurry in the open container 1 and accelerate the gas production rate, thereby making this gas production detection device more efficient and sensitive in detecting the gas production amount of the negative electrode slurry.
[0040] The present invention provides a gas production detection device for a silicon-based negative electrode slurry. The instruments used in this measurement device are common and low-cost, and the construction method is simple, sensitive and fast. By using the gas flow meter, the gas production situation of the slurry can be directly measured. The measurement method is simple and has high precision, greatly improving the work efficiency. By using the gas-liquid separation membrane and the drying tube, the small liquid beads generated during the gas production process of the slurry are filtered and dried, thereby improving the accuracy of the slurry gas production measurement.
[0041] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention. As used in the description herein and throughout the following claims, unless otherwise specified, "a" and "the" include plural referents. Similarly, as used in the description herein and throughout the following claims, unless otherwise specified, the meaning of "in..." includes "in..." and "on...".
[0042] The foregoing description of the embodiments shown in the present utility model (including that described in the abstract of the specification) is not intended to be exhaustive or to limit the present utility model to the precise forms disclosed herein. Although specific embodiments of the present utility model and examples of the present utility model are described herein for illustrative purposes only, various equivalent modifications will be recognized and understood by those skilled in the art to be within the spirit and scope of the present utility model. As noted, these modifications can be made to the present utility model in accordance with the foregoing description of the embodiments of the present utility model, and these modifications will be within the spirit and scope of the present utility model.
Claims
1. A gas generation detection device for a silicon-based anode slurry, characterized in that, At least including: An open container for containing the silicon-based anode slurry; A sealing cover sleeved on the open container; A conduit communicated with the sealing cover; A drying tube arranged on the conduit to dry the gas in the conduit; and A gas flowmeter arranged on the conduit to detect the gas flow rate in the conduit in real time.
2. The gas generation detection device for a silicon-based anode slurry according to claim 1, characterized in that, The gas flowmeter includes a first gas flowmeter and a second gas flowmeter, and the first gas flowmeter and the second gas flowmeter are respectively arranged at both ends of the drying tube.
3. The gas generation detection device for a silicon-based anode paste according to claim 1, characterized in that, The gas production detection device further includes a sealing ring arranged between the open container and the sealing cover.
4. The gas generation detection device for a silicon-based anode slurry according to claim 3, characterized in that, The material of the sealing ring is rubber, plastic or ceramic plastic composite material.
5. The gas generation detection device for a silicon-based anode slurry according to claim 1, characterized in that, The gas production detection device further includes a gas-liquid separation membrane arranged between the sealing cover and the drying tube.
6. The gas generation detection device for a silicon-based anode slurry according to claim 5, wherein The thickness of the gas-liquid separation membrane is 1 to 500 μm, and the pore diameter is 0.1 to 100 nm.
7. The gas generation detection device for a silicon-based anode paste according to claim 1, characterized in that, The volume of the open container is 100 mL to 10 L, and the material of the open container is selected from any one of polytetrafluoroethylene, polyphenylene, quartz, ceramic, stainless steel, titanium material, nickel-based alloy and composite steel plate.
8. The gas generation detection device for a silicon-based anode slurry according to claim 1, wherein, Desiccant is placed in the drying tube, and the desiccant is selected from any one of silica gel desiccant, molecular sieve desiccant, calcium oxide desiccant, calcium chloride desiccant, montmorillonite desiccant, activated carbon desiccant or activated alumina desiccant.
9. The gas generation detection device for a silicon-based anode slurry according to claim 1, characterized in that, The material of the sealing cover is a high gas barrier material, and the material of the sealing cover is selected from any one or several of polyethylene, polypropylene, polystyrene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene dichloride, nylon.
10. The gas generation detection device for a silicon-based anode paste according to claim 1, characterized in that The device further includes a dispersion device, the open container is placed in the dispersion device, and the dispersion device includes any one of a shaker, a magnetic stirrer or an ultrasonic device.