Leaching device for new energy automobile power battery material recovery
By using a segmentation mesh and a multi-layer stirring structure in the lithium battery leaching device, the problem of sulfur dioxide gas aggregation was solved, achieving efficient gas-liquid reaction, improving leaching efficiency and reducing gas loss.
Patent Information
- Application Number
- CN202520303968.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In the existing lithium battery leaching process, sulfur dioxide gas tends to aggregate and form large bubbles, resulting in insufficient contact with the liquid, which affects leaching efficiency and increases gas loss.
Design an leaching device comprising a dividing mesh and a multi-layer stirring structure. The dividing mesh separates the bubbles, and the combined stirring structure and air intake structure of the upper and lower chambers increase the residence time and path of the bubbles in the liquid, thereby improving the gas-liquid reaction efficiency.
It effectively reduces the volume of bubbles, prolongs the residence time of bubbles in the liquid, improves the leaching reaction rate and efficiency, and avoids gas waste.
Smart Images
Figure CN223837510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery valuable metal recycling technology, specifically to a leaching device for recycling power battery materials of new energy vehicles. Background Technology
[0002] Lithium-ion batteries have advantages such as high energy density, long cycle life, and lightweight portability, making them widely used in electric vehicles. With the booming development of the electric vehicle industry, the production and consumption of power lithium-ion batteries have increased dramatically, leading to a continuous rise in the amount of scrapped batteries. There are two main categories of disposal methods for scrapped lithium batteries in the industry: reuse and resource recycling. Reuse is further divided into replacement for lower-energy-consumption new energy vehicles, use in large-scale energy storage devices, and other low-energy-consumption applications. Resource recycling refers to the dismantling and recycling of lithium batteries. One existing process for recovering valuable metals from lithium batteries is a wet process. This involves adding waste lithium battery cathode powder to a leaching tank, dissolving the powder in deionized water, and then introducing a reducing gas, such as sulfur dioxide, into the tank. The sulfur dioxide reduces the high-valence states Ni, Co, and Mn in the cathode material to lower valence states. Simultaneously, the sulfur dioxide is oxidized to sulfur trioxide, which, after dissolving in water, provides sulfate ions to combine with metal ions to form salts, facilitating subsequent recycling processes.
[0003] In the actual leaching process, sulfur dioxide gas often gathers to form large bubbles, which prevents the sulfur dioxide gas from fully contacting the liquid, affecting the leaching efficiency and increasing the loss of sulfur dioxide gas. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a leaching device for recycling power battery materials of new energy vehicles.
[0005] One embodiment of this utility model provides a leaching device for recycling power battery materials of new energy vehicles, comprising:
[0006] The main body has a reaction chamber inside, and a dividing mesh is provided inside the reaction chamber. The dividing mesh divides the reaction chamber into an upper chamber and a lower chamber. Multiple dividing vents connecting the upper chamber and the lower chamber are arranged on the dividing mesh.
[0007] The stirring assembly includes a first stirring structure, a second stirring structure, an air intake structure, and a drive module. The first stirring structure is disposed in the upper cavity, and the second stirring structure and the air intake structure are disposed sequentially from top to bottom in the lower cavity. The drive module is disposed on the main body and is drivenly connected to the first stirring structure and the second stirring structure to drive the first stirring structure and the second stirring structure to rotate along a preset rotation direction.
[0008] In some optional embodiments, the first stirring structure includes multiple sets of first stirring blades disposed in the upper cavity. Each set of first stirring blades includes multiple first stirring blades. The multiple first stirring blades in the same set are evenly arranged around a preset rotation axis. The multiple sets of first stirring blades are arranged sequentially from top to bottom. The driving module is drivenly connected to the first stirring blades.
[0009] In some optional embodiments, the first stirring structure further includes multiple sets of first swirling blades disposed in the upper cavity. Each set of swirling blades includes multiple first swirling blades. Multiple first swirling blades in the same set are evenly arranged around the preset rotation axis. The frontal surface of the first swirling blades gradually extends upward in the preset rotation direction. Multiple sets of first stirring blades and multiple sets of first swirling blades are arranged at intervals from top to bottom.
[0010] In some optional embodiments, the second stirring structure includes multiple sets of second stirring blades disposed in the upper cavity. Each set of second stirring blades includes multiple second stirring blades. The multiple second stirring blades in the same set are evenly arranged around a preset rotation axis. The multiple sets of second stirring blades are arranged sequentially from top to bottom. The driving module is drivenly connected to the second stirring blades.
[0011] In some optional embodiments, the second stirring structure further includes a plurality of second swirl blades disposed in the upper cavity. The plurality of second swirl blades are evenly arranged around the preset rotation axis, and the frontal surface of the second swirl blades gradually extends downward in the preset rotation direction. The second swirl blades and the plurality of sets of second stirring blades are arranged sequentially from top to bottom.
[0012] In some optional embodiments, the air intake structure includes a base and a plurality of annular pressure equalizing cavities disposed within the base. The annular pressure equalizing cavities are arranged around a preset rotation axis, and the plurality of annular pressure equalizing cavities are arranged radially along the preset rotation axis. The top of each annular pressure equalizing cavity is provided with a plurality of air outlets.
[0013] In some optional embodiments, the air intake structure further includes a main air pipe and multiple sets of air intake pipes. The main air pipe is connected to the air intake pipes. Each set of air intake pipes includes multiple air intake pipes. The multiple air intake pipes in the same set are evenly arranged around the preset rotation axis and are connected to the same annular pressure equalization chamber.
[0014] In some alternative implementations, the plurality of annular equalizing cavities do not overlap each other in the top-to-bottom projection direction.
[0015] In some alternative implementations, the drive module is driven and connected to the base.
[0016] In some optional embodiments, the drive module includes a drive motor and a transmission shaft. The drive motor is mounted on the main body, and the transmission shaft is mounted inside the reaction chamber. The top end of the transmission shaft is connected to the output end of the drive motor, and a positioning groove is provided at the bottom end of the reaction chamber. The bottom end of the transmission shaft is rotatably engaged with the positioning groove.
[0017] Compared with existing technologies, the leaching device for recycling power battery materials of new energy vehicles of this invention can effectively reduce the volume of bubbles and increase the residence time of bubbles in the liquid, thereby effectively accelerating the reaction rate, improving leaching efficiency, and avoiding gas waste.
[0018] To provide a clearer understanding of this invention, the specific embodiments of the invention will be described below in conjunction with the accompanying drawings. Attached Figure Description
[0019] Figure 1 This is a cross-sectional view of a leaching device for recycling power battery materials of new energy vehicles according to an embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the segmentation mesh according to an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the air intake structure according to an embodiment of the present invention;
[0022] Figure 4 This is a cross-sectional view of the air intake structure according to an embodiment of the present invention.
[0023] Explanation of reference numerals in the attached figures:
[0024] 10. Main body; 11. Reaction chamber; 111. Upper chamber; 112. Lower chamber; 12. Dividing mesh; 121. Dividing air hole; 122. Clearance hole; 13. Positioning groove; 20. Stirring assembly; 21. First stirring structure; 211. First stirring blade; 212. First swirl blade; 22. Second stirring structure; 221. Second stirring blade; 222. Second swirl blade; 23. Air intake structure; 231. Substrate; 232. Annular pressure equalization chamber; 2321. Air outlet; 233. Main air pipe; 234. Air intake pipe; 24. Drive module; 241. Drive motor; 242. Transmission shaft. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, unless otherwise stated, "a plurality of" means two or more, and "a number" means one or more. In addition, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] In the description of this utility model, references to terms such as "one embodiment," "some alternative implementations," or "some optional embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0029] Please see Figure 1 and Figure 2 One embodiment of this utility model provides a leaching device for recycling power battery materials for new energy vehicles, comprising: a main body 10 and a stirring assembly 20.
[0030] The main body 10 contains a reaction chamber 11, which is equipped with a dividing mesh 12. The dividing mesh 12 divides the reaction chamber 11 into an upper chamber 111 and a lower chamber 112. The dividing mesh 12 has multiple dividing vent holes 121 that connect the upper chamber 111 and the lower chamber 112. The top of the reaction chamber 11 is also equipped with an exhaust port and a feed inlet.
[0031] The stirring assembly 20 includes a first stirring structure 21, a second stirring structure 22, an air intake structure 23, and a drive module 24. The first stirring structure 21 is disposed in the upper cavity 111, and the second stirring structure 22 and the air intake structure 23 are disposed sequentially from top to bottom in the lower cavity 112. The drive module 24 is disposed on the main body 10 and is drivenly connected to the first stirring structure 21 and the second stirring structure 22 to drive the first stirring structure 21 and the second stirring structure 22 to rotate in a preset rotation direction. The preset rotation direction is selected according to specific circumstances, such as clockwise or counterclockwise.
[0032] During the leaching process, the drive module 24 drives the first stirring structure 21 and the second stirring structure 22 to rotate. The reaction gas is injected into the reaction chamber 11 from the gas inlet structure 23. The rotation of the second stirring structure 22 realizes the flow of liquid in the lower chamber 112, improving the reaction efficiency between the reaction gas and the liquid. Since the small bubbles formed by the reaction gas may converge and grow larger during the rising process, the enlarged large bubbles are divided into small bubbles again when passing through the dividing vent 121. This allows the reaction gas to still fully react with the liquid in the upper chamber 111. Moreover, the design of the upper chamber 111 and the lower chamber 112 is conducive to increasing the path of the reaction gas, thereby increasing the time that the reaction gas stays in the liquid, which is beneficial to improving the reaction efficiency and completeness.
[0033] In this embodiment, sulfur dioxide is used as the reaction gas.
[0034] The specific structure of the first stirring structure 21 can be selected according to actual needs. For example, in some optional embodiments, the first stirring structure 21 includes multiple sets of first stirring blades 211 disposed in the upper cavity 111. Each set of first stirring blades 211 includes multiple first stirring blades 211. Multiple first stirring blades 211 in the same set are evenly arranged around a preset rotation axis. Multiple sets of first stirring blades 211 are arranged sequentially from top to bottom. The driving module 24 is driven and connected to the first stirring blades 211, driving the first stirring blades 211 to rotate in the upper cavity 111, which helps to improve reaction efficiency.
[0035] In some optional embodiments, the first stirring structure 21 further includes multiple sets of first swirling blades 212 disposed within the upper cavity 111. Each set of swirling blades includes multiple first swirling blades 212, which are evenly arranged around a preset rotation axis. The frontal surface of the first swirling blades 212 gradually extends upward in the preset rotation direction. The multiple sets of first stirring blades 211 and multiple sets of first swirling blades 212 are arranged alternately from top to bottom. The first swirling blades 212 facilitate the generation of swirling flow in the liquid within the upper cavity 111, thereby improving reaction efficiency. Moreover, the stirring of the first stirring blades 211 disrupts the swirling flow to a certain extent, generating turbulence, which further enhances reaction efficiency. Since the frontal surface of the first swirling blades 212 gradually extends upward in the preset rotation direction, the first swirling blades 212 can drive the liquid downward, thereby slowing down the rising speed of the bubbles, increasing the residence time of the reactant gas in the liquid, and improving reaction efficiency.
[0036] It should be noted that the frontal surface of the first swirl vane 212 refers to the side of the first swirl vane 212 that pushes the liquid to move when it rotates in a preset rotation direction. In this embodiment, the frontal surface of the first swirl vane 212 is the bottom of the first swirl vane 212.
[0037] In some optional embodiments, the second stirring structure 22 includes multiple sets of second stirring blades 221 disposed in the upper cavity 111. Each set of second stirring blades 221 includes multiple second stirring blades 221. The multiple second stirring blades 221 in the same set are evenly arranged around a preset rotation axis. The multiple sets of second stirring blades 221 are arranged sequentially from top to bottom. The driving module 24 is driven to connect with the second stirring blades 221, driving the second stirring blades 221 to rotate in the lower cavity 112, which helps to improve the reaction efficiency.
[0038] In some optional embodiments, the second stirring structure 22 further includes a plurality of second swirling blades 222 disposed in the upper chamber 111. The plurality of second swirling blades 222 are evenly arranged around a preset rotation axis, and the frontal surface of the second swirling blades 222 gradually extends downward in the preset rotation direction. The second swirling blades 222 and the plurality of sets of second stirring blades 221 are arranged sequentially from top to bottom. The second swirling blades 222 are beneficial to generating swirling flow in the lower chamber 112, which is beneficial to improving reaction efficiency. Since the frontal surface of the second swirling blades 222 gradually extends downward in the preset rotation direction, the second swirling blades 222 can drive the liquid to flow upward, thereby allowing the bubbles to quickly pass through the dividing holes 121, realizing the separation of bubbles and preventing bubbles from remaining on the dividing mesh 12 and causing the bubbles to aggregate and increase in size.
[0039] It should be noted that the frontal surface of the second swirl vane 222 refers to the two surfaces of the second swirl vane 222 that push the liquid to move when the second swirl vane 222 rotates in a preset rotation direction. In this embodiment, the frontal surface of the second swirl vane 222 is the top of the second swirl vane 222.
[0040] In addition, in this embodiment, the second swirl vane 222 drives the liquid to flow upward and the first swirl vane 212 drives the liquid to flow downward, making it easy for the liquid to collide and generate turbulence near the dividing screen 12, which is conducive to the rapid division of bubbles by the dividing screen 12, improving the bubble division efficiency and avoiding the formation of large bubbles.
[0041] Please see Figure 3 and Figure 4 In some optional embodiments, the air intake structure 23 includes a base 231 and a plurality of annular pressure equalizing chambers 232 disposed within the base 231. The annular pressure equalizing chambers 232 are arranged around a preset rotation axis, and the plurality of annular pressure equalizing chambers 232 are arranged radially along the preset rotation axis. A plurality of air outlets 2321 are provided on the top of the annular pressure equalizing chambers 232. The reaction gas is filled into the annular pressure equalizing chambers 232 and then enters the reaction chamber 11 through the air outlets 2321. The plurality of annular pressure equalizing chambers 232 is beneficial to ensure that the reaction gas can be distributed throughout the reaction chamber 11, thereby improving the reaction efficiency and avoiding the situation where the reaction efficiency is low due to local air outlets.
[0042] In some optional embodiments, the air intake structure 23 further includes a main air pipe 233 and multiple sets of air intake pipes 234. The main air pipe 233 is connected to the air intake pipes 234. Each set of air intake pipes 234 includes multiple air intake pipes 234. The multiple air intake pipes 234 in the same set are evenly arranged around a preset rotation axis and are connected to the same annular pressure equalization chamber 232. Different sets of air intake pipes 234 are connected to different annular pressure equalization chambers 232. Multiple air intake pipes 234 help improve the uniformity of air pressure in the annular pressure equalization chamber 232, making the bubbles discharged from the annular pressure equalization chamber 232 more uniform and avoiding the situation where no bubbles emerge from the outlet 2321 in some local positions. Ventilation holes are arranged at the bottom of the air intake pipes 234 and are connected to the annular pressure equalization chamber 232. This can prevent gas from being blown directly to the outlet 2321, which is conducive to achieving pressure equalization.
[0043] In some alternative embodiments, multiple annular pressure equalizing cavities 232 do not overlap in the top-to-bottom projection direction, which helps to increase the distribution range of the vent holes 2321, allowing the bubbles to cover more areas of the reaction chamber 11.
[0044] In some alternative embodiments, the drive module 24 is driven to the substrate 231, and the substrate 231 rotates under the drive of the drive module 24, so that the bubbles discharged from the vent 2321 diffuse over a wider range, which is beneficial to improving the reaction efficiency. Of course, the substrate 231 can also be fixed to the bottom of the reaction chamber 11.
[0045] In some optional embodiments, the drive module 24 includes a drive motor 241 and a transmission shaft 242. The drive motor 241 is mounted on the main body 10, and the transmission shaft 242 is mounted inside the reaction chamber 11. The top end of the transmission shaft 242 is connected to the output end of the drive motor 241. A positioning groove 13 is provided at the bottom end of the reaction chamber 11, and the bottom end of the transmission shaft 242 is rotatably engaged with the positioning groove 13. Due to the relatively high height of the reaction chamber 11, the positioning groove 13 can prevent the transmission shaft 242 from shifting its position. The axis of the transmission shaft 242 coincides with a preset rotation axis. In this embodiment, the base 231, the first stirring blade 211, the first swirling blade 212, the second stirring blade 221, and the second swirling blade 222 are all mounted on the transmission shaft 242. A bearing can be installed in the positioning groove 13, and the transmission shaft 242 cooperates with the bearing to improve the stability of the transmission shaft 242. The dividing mesh 12 is also provided with a clearance hole 122 to allow the transmission shaft 242 to pass through.
[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A leaching device for recycling power battery materials for new energy vehicles, characterized in that, include: The main body has a reaction chamber inside, and a dividing mesh is provided inside the reaction chamber. The dividing mesh divides the reaction chamber into an upper chamber and a lower chamber. Multiple dividing vents connecting the upper chamber and the lower chamber are arranged on the dividing mesh. The stirring assembly includes a first stirring structure, a second stirring structure, an air intake structure, and a drive module. The first stirring structure is disposed in the upper cavity, and the second stirring structure and the air intake structure are disposed sequentially from top to bottom in the lower cavity. The drive module is disposed on the main body and is drivenly connected to the first stirring structure and the second stirring structure to drive the first stirring structure and the second stirring structure to rotate along a preset rotation direction.
2. The leaching device for recycling power battery materials for new energy vehicles according to claim 1, characterized in that: The first stirring structure includes multiple sets of first stirring blades disposed in the upper cavity. Each set of first stirring blades includes multiple first stirring blades. The multiple first stirring blades in the same set are evenly arranged around a preset rotation axis. The multiple sets of first stirring blades are arranged sequentially from top to bottom. The driving module is driven and connected to the first stirring blades.
3. A leaching device for recycling power battery materials for new energy vehicles according to claim 2, characterized in that: The first stirring structure also includes multiple sets of first swirl blades disposed in the upper cavity. Each set of swirl blades includes multiple first swirl blades. Multiple first swirl blades in the same set are evenly arranged around the preset rotation axis. The frontal surface of the first swirl blades gradually extends upward in the preset rotation direction. Multiple sets of first stirring blades and multiple sets of first swirl blades are arranged at intervals from top to bottom.
4. The leaching device for recycling power battery materials for new energy vehicles according to claim 1, characterized in that: The second stirring structure includes multiple sets of second stirring blades disposed in the upper cavity. Each set of second stirring blades includes multiple second stirring blades. Multiple second stirring blades in the same set are evenly arranged around a preset rotation axis. Multiple sets of second stirring blades are arranged sequentially from top to bottom. The driving module is driven and connected to the second stirring blades.
5. A leaching device for recycling power battery materials for new energy vehicles according to claim 4, characterized in that: The second stirring structure also includes a plurality of second swirl blades disposed in the upper cavity. The plurality of second swirl blades are evenly arranged around the preset rotation axis. The frontal surface of the second swirl blades gradually extends downward in the preset rotation direction. The second swirl blades and the plurality of sets of second stirring blades are arranged sequentially from top to bottom.
6. A leaching apparatus for recycling power battery materials for new energy vehicles according to any one of claims 1 to 5, characterized in that: The air intake structure includes a base and a plurality of annular pressure equalizing cavities disposed within the base. The annular pressure equalizing cavities are arranged around a preset rotation axis, and the plurality of annular pressure equalizing cavities are arranged radially along the preset rotation axis. The top of each annular pressure equalizing cavity is provided with a plurality of air outlets.
7. A leaching device for recycling power battery materials for new energy vehicles according to claim 6, characterized in that: The air intake structure also includes a main air pipe and multiple sets of air intake pipes. The main air pipe is connected to the air intake pipes. Each set of air intake pipes includes multiple air intake pipes. The multiple air intake pipes in the same set are evenly arranged around the preset rotation axis and are connected to the same annular pressure equalization chamber.
8. A leaching device for recycling power battery materials for new energy vehicles according to claim 6, characterized in that: In the top-to-bottom projection direction, the multiple annular pressure equalization cavities do not overlap with each other.
9. A leaching device for recycling power battery materials for new energy vehicles according to claim 6, characterized in that: The drive module is connected to the base drive.
10. A leaching device for recycling power battery materials for new energy vehicles according to any one of claims 1 to 5, characterized in that: The drive module includes a drive motor and a transmission shaft. The drive motor is mounted on the main body, and the transmission shaft is mounted inside the reaction chamber. The top end of the transmission shaft is connected to the output end of the drive motor, and a positioning groove is provided at the bottom end of the reaction chamber. The bottom end of the transmission shaft is rotatably engaged with the positioning groove.